sdl-ios-xcode: src/video/SDL_rendercopy.c annotate

annotate src/video/SDL_rendercopy.c @ 2236:741afd8402cf

This is byte order dependent.

author	Sam Lantinga <slouken@libsdl.org>
date	Sun, 12 Aug 2007 18:53:51 +0000
parents	7387e0514595
children

rev	line source
1985 8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1 /* DO NOT EDIT! This file is generated by sdlgenblit.pl */
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2 /*
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3 SDL - Simple DirectMedia Layer
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4 Copyright (C) 1997-2006 Sam Lantinga
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	6 This library is free software; you can redistribute it and/or
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	7 modify it under the terms of the GNU Lesser General Public
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	8 License as published by the Free Software Foundation; either
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	9 version 2.1 of the License, or (at your option) any later version.
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	10
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	11 This library is distributed in the hope that it will be useful,
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	12 but WITHOUT ANY WARRANTY; without even the implied warranty of
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	14 Lesser General Public License for more details.
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	15
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	16 You should have received a copy of the GNU Lesser General Public
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	17 License along with this library; if not, write to the Free Software
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	18 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	19
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	20 Sam Lantinga
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	21 slouken@libsdl.org
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	22 */
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	23 #include "SDL_config.h"
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	24
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	25 /* INDENT-OFF */
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	26
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	27 #include "SDL_video.h"
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	28 #include "SDL_rendercopy.h"
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	29
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	30 static struct {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	31 Uint32 src_format;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	32 Uint32 dst_format;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	33 int modMode;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	34 int blendMode;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	35 int scaleMode;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	36 SDL_RenderCopyFunc func;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	37 } SDL_RenderCopyFuncTable[] = {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	38 { SDL_PIXELFORMAT_RGB888, SDL_PIXELFORMAT_RGB888, 0, 0, SDL_TEXTURESCALEMODE_FAST, SDL_RenderCopy_RGB888_RGB888_Scale },
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	39 { SDL_PIXELFORMAT_RGB888, SDL_PIXELFORMAT_RGB888, 0, (SDL_TEXTUREBLENDMODE_MASK \| SDL_TEXTUREBLENDMODE_BLEND \| SDL_TEXTUREBLENDMODE_ADD \| SDL_TEXTUREBLENDMODE_MOD), 0, SDL_RenderCopy_RGB888_RGB888_Blend },
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	40 { SDL_PIXELFORMAT_RGB888, SDL_PIXELFORMAT_RGB888, 0, (SDL_TEXTUREBLENDMODE_MASK \| SDL_TEXTUREBLENDMODE_BLEND \| SDL_TEXTUREBLENDMODE_ADD \| SDL_TEXTUREBLENDMODE_MOD), SDL_TEXTURESCALEMODE_FAST, SDL_RenderCopy_RGB888_RGB888_Blend_Scale },
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	41 { SDL_PIXELFORMAT_RGB888, SDL_PIXELFORMAT_RGB888, (SDL_TEXTUREMODULATE_COLOR \| SDL_TEXTUREMODULATE_ALPHA), 0, 0, SDL_RenderCopy_RGB888_RGB888_Modulate },
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	42 { SDL_PIXELFORMAT_RGB888, SDL_PIXELFORMAT_RGB888, (SDL_TEXTUREMODULATE_COLOR \| SDL_TEXTUREMODULATE_ALPHA), 0, SDL_TEXTURESCALEMODE_FAST, SDL_RenderCopy_RGB888_RGB888_Modulate_Scale },
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	43 { SDL_PIXELFORMAT_RGB888, SDL_PIXELFORMAT_RGB888, (SDL_TEXTUREMODULATE_COLOR \| SDL_TEXTUREMODULATE_ALPHA), (SDL_TEXTUREBLENDMODE_MASK \| SDL_TEXTUREBLENDMODE_BLEND \| SDL_TEXTUREBLENDMODE_ADD \| SDL_TEXTUREBLENDMODE_MOD), 0, SDL_RenderCopy_RGB888_RGB888_Modulate_Blend },
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	44 { SDL_PIXELFORMAT_RGB888, SDL_PIXELFORMAT_RGB888, (SDL_TEXTUREMODULATE_COLOR \| SDL_TEXTUREMODULATE_ALPHA), (SDL_TEXTUREBLENDMODE_MASK \| SDL_TEXTUREBLENDMODE_BLEND \| SDL_TEXTUREBLENDMODE_ADD \| SDL_TEXTUREBLENDMODE_MOD), SDL_TEXTURESCALEMODE_FAST, SDL_RenderCopy_RGB888_RGB888_Modulate_Blend_Scale },
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	45 { SDL_PIXELFORMAT_RGB888, SDL_PIXELFORMAT_BGR888, 0, 0, SDL_TEXTURESCALEMODE_FAST, SDL_RenderCopy_RGB888_BGR888_Scale },
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	46 { SDL_PIXELFORMAT_RGB888, SDL_PIXELFORMAT_BGR888, 0, (SDL_TEXTUREBLENDMODE_MASK \| SDL_TEXTUREBLENDMODE_BLEND \| SDL_TEXTUREBLENDMODE_ADD \| SDL_TEXTUREBLENDMODE_MOD), 0, SDL_RenderCopy_RGB888_BGR888_Blend },
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	47 { SDL_PIXELFORMAT_RGB888, SDL_PIXELFORMAT_BGR888, 0, (SDL_TEXTUREBLENDMODE_MASK \| SDL_TEXTUREBLENDMODE_BLEND \| SDL_TEXTUREBLENDMODE_ADD \| SDL_TEXTUREBLENDMODE_MOD), SDL_TEXTURESCALEMODE_FAST, SDL_RenderCopy_RGB888_BGR888_Blend_Scale },
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	48 { SDL_PIXELFORMAT_RGB888, SDL_PIXELFORMAT_BGR888, (SDL_TEXTUREMODULATE_COLOR \| SDL_TEXTUREMODULATE_ALPHA), 0, 0, SDL_RenderCopy_RGB888_BGR888_Modulate },
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	49 { SDL_PIXELFORMAT_RGB888, SDL_PIXELFORMAT_BGR888, (SDL_TEXTUREMODULATE_COLOR \| SDL_TEXTUREMODULATE_ALPHA), 0, SDL_TEXTURESCALEMODE_FAST, SDL_RenderCopy_RGB888_BGR888_Modulate_Scale },
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	50 { SDL_PIXELFORMAT_RGB888, SDL_PIXELFORMAT_BGR888, (SDL_TEXTUREMODULATE_COLOR \| SDL_TEXTUREMODULATE_ALPHA), (SDL_TEXTUREBLENDMODE_MASK \| SDL_TEXTUREBLENDMODE_BLEND \| SDL_TEXTUREBLENDMODE_ADD \| SDL_TEXTUREBLENDMODE_MOD), 0, SDL_RenderCopy_RGB888_BGR888_Modulate_Blend },
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	51 { SDL_PIXELFORMAT_RGB888, SDL_PIXELFORMAT_BGR888, (SDL_TEXTUREMODULATE_COLOR \| SDL_TEXTUREMODULATE_ALPHA), (SDL_TEXTUREBLENDMODE_MASK \| SDL_TEXTUREBLENDMODE_BLEND \| SDL_TEXTUREBLENDMODE_ADD \| SDL_TEXTUREBLENDMODE_MOD), SDL_TEXTURESCALEMODE_FAST, SDL_RenderCopy_RGB888_BGR888_Modulate_Blend_Scale },
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	52 { SDL_PIXELFORMAT_BGR888, SDL_PIXELFORMAT_RGB888, 0, 0, SDL_TEXTURESCALEMODE_FAST, SDL_RenderCopy_BGR888_RGB888_Scale },
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	53 { SDL_PIXELFORMAT_BGR888, SDL_PIXELFORMAT_RGB888, 0, (SDL_TEXTUREBLENDMODE_MASK \| SDL_TEXTUREBLENDMODE_BLEND \| SDL_TEXTUREBLENDMODE_ADD \| SDL_TEXTUREBLENDMODE_MOD), 0, SDL_RenderCopy_BGR888_RGB888_Blend },
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	54 { SDL_PIXELFORMAT_BGR888, SDL_PIXELFORMAT_RGB888, 0, (SDL_TEXTUREBLENDMODE_MASK \| SDL_TEXTUREBLENDMODE_BLEND \| SDL_TEXTUREBLENDMODE_ADD \| SDL_TEXTUREBLENDMODE_MOD), SDL_TEXTURESCALEMODE_FAST, SDL_RenderCopy_BGR888_RGB888_Blend_Scale },
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	55 { SDL_PIXELFORMAT_BGR888, SDL_PIXELFORMAT_RGB888, (SDL_TEXTUREMODULATE_COLOR \| SDL_TEXTUREMODULATE_ALPHA), 0, 0, SDL_RenderCopy_BGR888_RGB888_Modulate },
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	56 { SDL_PIXELFORMAT_BGR888, SDL_PIXELFORMAT_RGB888, (SDL_TEXTUREMODULATE_COLOR \| SDL_TEXTUREMODULATE_ALPHA), 0, SDL_TEXTURESCALEMODE_FAST, SDL_RenderCopy_BGR888_RGB888_Modulate_Scale },
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	57 { SDL_PIXELFORMAT_BGR888, SDL_PIXELFORMAT_RGB888, (SDL_TEXTUREMODULATE_COLOR \| SDL_TEXTUREMODULATE_ALPHA), (SDL_TEXTUREBLENDMODE_MASK \| SDL_TEXTUREBLENDMODE_BLEND \| SDL_TEXTUREBLENDMODE_ADD \| SDL_TEXTUREBLENDMODE_MOD), 0, SDL_RenderCopy_BGR888_RGB888_Modulate_Blend },
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	58 { SDL_PIXELFORMAT_BGR888, SDL_PIXELFORMAT_RGB888, (SDL_TEXTUREMODULATE_COLOR \| SDL_TEXTUREMODULATE_ALPHA), (SDL_TEXTUREBLENDMODE_MASK \| SDL_TEXTUREBLENDMODE_BLEND \| SDL_TEXTUREBLENDMODE_ADD \| SDL_TEXTUREBLENDMODE_MOD), SDL_TEXTURESCALEMODE_FAST, SDL_RenderCopy_BGR888_RGB888_Modulate_Blend_Scale },
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	59 { SDL_PIXELFORMAT_BGR888, SDL_PIXELFORMAT_BGR888, 0, 0, SDL_TEXTURESCALEMODE_FAST, SDL_RenderCopy_BGR888_BGR888_Scale },
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	60 { SDL_PIXELFORMAT_BGR888, SDL_PIXELFORMAT_BGR888, 0, (SDL_TEXTUREBLENDMODE_MASK \| SDL_TEXTUREBLENDMODE_BLEND \| SDL_TEXTUREBLENDMODE_ADD \| SDL_TEXTUREBLENDMODE_MOD), 0, SDL_RenderCopy_BGR888_BGR888_Blend },
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	61 { SDL_PIXELFORMAT_BGR888, SDL_PIXELFORMAT_BGR888, 0, (SDL_TEXTUREBLENDMODE_MASK \| SDL_TEXTUREBLENDMODE_BLEND \| SDL_TEXTUREBLENDMODE_ADD \| SDL_TEXTUREBLENDMODE_MOD), SDL_TEXTURESCALEMODE_FAST, SDL_RenderCopy_BGR888_BGR888_Blend_Scale },
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	62 { SDL_PIXELFORMAT_BGR888, SDL_PIXELFORMAT_BGR888, (SDL_TEXTUREMODULATE_COLOR \| SDL_TEXTUREMODULATE_ALPHA), 0, 0, SDL_RenderCopy_BGR888_BGR888_Modulate },
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	63 { SDL_PIXELFORMAT_BGR888, SDL_PIXELFORMAT_BGR888, (SDL_TEXTUREMODULATE_COLOR \| SDL_TEXTUREMODULATE_ALPHA), 0, SDL_TEXTURESCALEMODE_FAST, SDL_RenderCopy_BGR888_BGR888_Modulate_Scale },
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	64 { SDL_PIXELFORMAT_BGR888, SDL_PIXELFORMAT_BGR888, (SDL_TEXTUREMODULATE_COLOR \| SDL_TEXTUREMODULATE_ALPHA), (SDL_TEXTUREBLENDMODE_MASK \| SDL_TEXTUREBLENDMODE_BLEND \| SDL_TEXTUREBLENDMODE_ADD \| SDL_TEXTUREBLENDMODE_MOD), 0, SDL_RenderCopy_BGR888_BGR888_Modulate_Blend },
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	65 { SDL_PIXELFORMAT_BGR888, SDL_PIXELFORMAT_BGR888, (SDL_TEXTUREMODULATE_COLOR \| SDL_TEXTUREMODULATE_ALPHA), (SDL_TEXTUREBLENDMODE_MASK \| SDL_TEXTUREBLENDMODE_BLEND \| SDL_TEXTUREBLENDMODE_ADD \| SDL_TEXTUREBLENDMODE_MOD), SDL_TEXTURESCALEMODE_FAST, SDL_RenderCopy_BGR888_BGR888_Modulate_Blend_Scale },
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	66 { SDL_PIXELFORMAT_ARGB8888, SDL_PIXELFORMAT_RGB888, 0, 0, SDL_TEXTURESCALEMODE_FAST, SDL_RenderCopy_ARGB8888_RGB888_Scale },
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	67 { SDL_PIXELFORMAT_ARGB8888, SDL_PIXELFORMAT_RGB888, 0, (SDL_TEXTUREBLENDMODE_MASK \| SDL_TEXTUREBLENDMODE_BLEND \| SDL_TEXTUREBLENDMODE_ADD \| SDL_TEXTUREBLENDMODE_MOD), 0, SDL_RenderCopy_ARGB8888_RGB888_Blend },
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	68 { SDL_PIXELFORMAT_ARGB8888, SDL_PIXELFORMAT_RGB888, 0, (SDL_TEXTUREBLENDMODE_MASK \| SDL_TEXTUREBLENDMODE_BLEND \| SDL_TEXTUREBLENDMODE_ADD \| SDL_TEXTUREBLENDMODE_MOD), SDL_TEXTURESCALEMODE_FAST, SDL_RenderCopy_ARGB8888_RGB888_Blend_Scale },
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	69 { SDL_PIXELFORMAT_ARGB8888, SDL_PIXELFORMAT_RGB888, (SDL_TEXTUREMODULATE_COLOR \| SDL_TEXTUREMODULATE_ALPHA), 0, 0, SDL_RenderCopy_ARGB8888_RGB888_Modulate },
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	70 { SDL_PIXELFORMAT_ARGB8888, SDL_PIXELFORMAT_RGB888, (SDL_TEXTUREMODULATE_COLOR \| SDL_TEXTUREMODULATE_ALPHA), 0, SDL_TEXTURESCALEMODE_FAST, SDL_RenderCopy_ARGB8888_RGB888_Modulate_Scale },
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	71 { SDL_PIXELFORMAT_ARGB8888, SDL_PIXELFORMAT_RGB888, (SDL_TEXTUREMODULATE_COLOR \| SDL_TEXTUREMODULATE_ALPHA), (SDL_TEXTUREBLENDMODE_MASK \| SDL_TEXTUREBLENDMODE_BLEND \| SDL_TEXTUREBLENDMODE_ADD \| SDL_TEXTUREBLENDMODE_MOD), 0, SDL_RenderCopy_ARGB8888_RGB888_Modulate_Blend },
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	72 { SDL_PIXELFORMAT_ARGB8888, SDL_PIXELFORMAT_RGB888, (SDL_TEXTUREMODULATE_COLOR \| SDL_TEXTUREMODULATE_ALPHA), (SDL_TEXTUREBLENDMODE_MASK \| SDL_TEXTUREBLENDMODE_BLEND \| SDL_TEXTUREBLENDMODE_ADD \| SDL_TEXTUREBLENDMODE_MOD), SDL_TEXTURESCALEMODE_FAST, SDL_RenderCopy_ARGB8888_RGB888_Modulate_Blend_Scale },
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	73 { SDL_PIXELFORMAT_ARGB8888, SDL_PIXELFORMAT_BGR888, 0, 0, SDL_TEXTURESCALEMODE_FAST, SDL_RenderCopy_ARGB8888_BGR888_Scale },
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	74 { SDL_PIXELFORMAT_ARGB8888, SDL_PIXELFORMAT_BGR888, 0, (SDL_TEXTUREBLENDMODE_MASK \| SDL_TEXTUREBLENDMODE_BLEND \| SDL_TEXTUREBLENDMODE_ADD \| SDL_TEXTUREBLENDMODE_MOD), 0, SDL_RenderCopy_ARGB8888_BGR888_Blend },
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	75 { SDL_PIXELFORMAT_ARGB8888, SDL_PIXELFORMAT_BGR888, 0, (SDL_TEXTUREBLENDMODE_MASK \| SDL_TEXTUREBLENDMODE_BLEND \| SDL_TEXTUREBLENDMODE_ADD \| SDL_TEXTUREBLENDMODE_MOD), SDL_TEXTURESCALEMODE_FAST, SDL_RenderCopy_ARGB8888_BGR888_Blend_Scale },
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	76 { SDL_PIXELFORMAT_ARGB8888, SDL_PIXELFORMAT_BGR888, (SDL_TEXTUREMODULATE_COLOR \| SDL_TEXTUREMODULATE_ALPHA), 0, 0, SDL_RenderCopy_ARGB8888_BGR888_Modulate },
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	77 { SDL_PIXELFORMAT_ARGB8888, SDL_PIXELFORMAT_BGR888, (SDL_TEXTUREMODULATE_COLOR \| SDL_TEXTUREMODULATE_ALPHA), 0, SDL_TEXTURESCALEMODE_FAST, SDL_RenderCopy_ARGB8888_BGR888_Modulate_Scale },
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	78 { SDL_PIXELFORMAT_ARGB8888, SDL_PIXELFORMAT_BGR888, (SDL_TEXTUREMODULATE_COLOR \| SDL_TEXTUREMODULATE_ALPHA), (SDL_TEXTUREBLENDMODE_MASK \| SDL_TEXTUREBLENDMODE_BLEND \| SDL_TEXTUREBLENDMODE_ADD \| SDL_TEXTUREBLENDMODE_MOD), 0, SDL_RenderCopy_ARGB8888_BGR888_Modulate_Blend },
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	79 { SDL_PIXELFORMAT_ARGB8888, SDL_PIXELFORMAT_BGR888, (SDL_TEXTUREMODULATE_COLOR \| SDL_TEXTUREMODULATE_ALPHA), (SDL_TEXTUREBLENDMODE_MASK \| SDL_TEXTUREBLENDMODE_BLEND \| SDL_TEXTUREBLENDMODE_ADD \| SDL_TEXTUREBLENDMODE_MOD), SDL_TEXTURESCALEMODE_FAST, SDL_RenderCopy_ARGB8888_BGR888_Modulate_Blend_Scale },
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	80 { SDL_PIXELFORMAT_RGBA8888, SDL_PIXELFORMAT_RGB888, 0, 0, SDL_TEXTURESCALEMODE_FAST, SDL_RenderCopy_RGBA8888_RGB888_Scale },
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	81 { SDL_PIXELFORMAT_RGBA8888, SDL_PIXELFORMAT_RGB888, 0, (SDL_TEXTUREBLENDMODE_MASK \| SDL_TEXTUREBLENDMODE_BLEND \| SDL_TEXTUREBLENDMODE_ADD \| SDL_TEXTUREBLENDMODE_MOD), 0, SDL_RenderCopy_RGBA8888_RGB888_Blend },
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	82 { SDL_PIXELFORMAT_RGBA8888, SDL_PIXELFORMAT_RGB888, 0, (SDL_TEXTUREBLENDMODE_MASK \| SDL_TEXTUREBLENDMODE_BLEND \| SDL_TEXTUREBLENDMODE_ADD \| SDL_TEXTUREBLENDMODE_MOD), SDL_TEXTURESCALEMODE_FAST, SDL_RenderCopy_RGBA8888_RGB888_Blend_Scale },
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	83 { SDL_PIXELFORMAT_RGBA8888, SDL_PIXELFORMAT_RGB888, (SDL_TEXTUREMODULATE_COLOR \| SDL_TEXTUREMODULATE_ALPHA), 0, 0, SDL_RenderCopy_RGBA8888_RGB888_Modulate },
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	84 { SDL_PIXELFORMAT_RGBA8888, SDL_PIXELFORMAT_RGB888, (SDL_TEXTUREMODULATE_COLOR \| SDL_TEXTUREMODULATE_ALPHA), 0, SDL_TEXTURESCALEMODE_FAST, SDL_RenderCopy_RGBA8888_RGB888_Modulate_Scale },
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	85 { SDL_PIXELFORMAT_RGBA8888, SDL_PIXELFORMAT_RGB888, (SDL_TEXTUREMODULATE_COLOR \| SDL_TEXTUREMODULATE_ALPHA), (SDL_TEXTUREBLENDMODE_MASK \| SDL_TEXTUREBLENDMODE_BLEND \| SDL_TEXTUREBLENDMODE_ADD \| SDL_TEXTUREBLENDMODE_MOD), 0, SDL_RenderCopy_RGBA8888_RGB888_Modulate_Blend },
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	86 { SDL_PIXELFORMAT_RGBA8888, SDL_PIXELFORMAT_RGB888, (SDL_TEXTUREMODULATE_COLOR \| SDL_TEXTUREMODULATE_ALPHA), (SDL_TEXTUREBLENDMODE_MASK \| SDL_TEXTUREBLENDMODE_BLEND \| SDL_TEXTUREBLENDMODE_ADD \| SDL_TEXTUREBLENDMODE_MOD), SDL_TEXTURESCALEMODE_FAST, SDL_RenderCopy_RGBA8888_RGB888_Modulate_Blend_Scale },
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	87 { SDL_PIXELFORMAT_RGBA8888, SDL_PIXELFORMAT_BGR888, 0, 0, SDL_TEXTURESCALEMODE_FAST, SDL_RenderCopy_RGBA8888_BGR888_Scale },
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	88 { SDL_PIXELFORMAT_RGBA8888, SDL_PIXELFORMAT_BGR888, 0, (SDL_TEXTUREBLENDMODE_MASK \| SDL_TEXTUREBLENDMODE_BLEND \| SDL_TEXTUREBLENDMODE_ADD \| SDL_TEXTUREBLENDMODE_MOD), 0, SDL_RenderCopy_RGBA8888_BGR888_Blend },
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	89 { SDL_PIXELFORMAT_RGBA8888, SDL_PIXELFORMAT_BGR888, 0, (SDL_TEXTUREBLENDMODE_MASK \| SDL_TEXTUREBLENDMODE_BLEND \| SDL_TEXTUREBLENDMODE_ADD \| SDL_TEXTUREBLENDMODE_MOD), SDL_TEXTURESCALEMODE_FAST, SDL_RenderCopy_RGBA8888_BGR888_Blend_Scale },
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	90 { SDL_PIXELFORMAT_RGBA8888, SDL_PIXELFORMAT_BGR888, (SDL_TEXTUREMODULATE_COLOR \| SDL_TEXTUREMODULATE_ALPHA), 0, 0, SDL_RenderCopy_RGBA8888_BGR888_Modulate },
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	91 { SDL_PIXELFORMAT_RGBA8888, SDL_PIXELFORMAT_BGR888, (SDL_TEXTUREMODULATE_COLOR \| SDL_TEXTUREMODULATE_ALPHA), 0, SDL_TEXTURESCALEMODE_FAST, SDL_RenderCopy_RGBA8888_BGR888_Modulate_Scale },
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	92 { SDL_PIXELFORMAT_RGBA8888, SDL_PIXELFORMAT_BGR888, (SDL_TEXTUREMODULATE_COLOR \| SDL_TEXTUREMODULATE_ALPHA), (SDL_TEXTUREBLENDMODE_MASK \| SDL_TEXTUREBLENDMODE_BLEND \| SDL_TEXTUREBLENDMODE_ADD \| SDL_TEXTUREBLENDMODE_MOD), 0, SDL_RenderCopy_RGBA8888_BGR888_Modulate_Blend },
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	93 { SDL_PIXELFORMAT_RGBA8888, SDL_PIXELFORMAT_BGR888, (SDL_TEXTUREMODULATE_COLOR \| SDL_TEXTUREMODULATE_ALPHA), (SDL_TEXTUREBLENDMODE_MASK \| SDL_TEXTUREBLENDMODE_BLEND \| SDL_TEXTUREBLENDMODE_ADD \| SDL_TEXTUREBLENDMODE_MOD), SDL_TEXTURESCALEMODE_FAST, SDL_RenderCopy_RGBA8888_BGR888_Modulate_Blend_Scale },
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	94 { SDL_PIXELFORMAT_ABGR8888, SDL_PIXELFORMAT_RGB888, 0, 0, SDL_TEXTURESCALEMODE_FAST, SDL_RenderCopy_ABGR8888_RGB888_Scale },
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	95 { SDL_PIXELFORMAT_ABGR8888, SDL_PIXELFORMAT_RGB888, 0, (SDL_TEXTUREBLENDMODE_MASK \| SDL_TEXTUREBLENDMODE_BLEND \| SDL_TEXTUREBLENDMODE_ADD \| SDL_TEXTUREBLENDMODE_MOD), 0, SDL_RenderCopy_ABGR8888_RGB888_Blend },
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	96 { SDL_PIXELFORMAT_ABGR8888, SDL_PIXELFORMAT_RGB888, 0, (SDL_TEXTUREBLENDMODE_MASK \| SDL_TEXTUREBLENDMODE_BLEND \| SDL_TEXTUREBLENDMODE_ADD \| SDL_TEXTUREBLENDMODE_MOD), SDL_TEXTURESCALEMODE_FAST, SDL_RenderCopy_ABGR8888_RGB888_Blend_Scale },
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	97 { SDL_PIXELFORMAT_ABGR8888, SDL_PIXELFORMAT_RGB888, (SDL_TEXTUREMODULATE_COLOR \| SDL_TEXTUREMODULATE_ALPHA), 0, 0, SDL_RenderCopy_ABGR8888_RGB888_Modulate },
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	98 { SDL_PIXELFORMAT_ABGR8888, SDL_PIXELFORMAT_RGB888, (SDL_TEXTUREMODULATE_COLOR \| SDL_TEXTUREMODULATE_ALPHA), 0, SDL_TEXTURESCALEMODE_FAST, SDL_RenderCopy_ABGR8888_RGB888_Modulate_Scale },
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	99 { SDL_PIXELFORMAT_ABGR8888, SDL_PIXELFORMAT_RGB888, (SDL_TEXTUREMODULATE_COLOR \| SDL_TEXTUREMODULATE_ALPHA), (SDL_TEXTUREBLENDMODE_MASK \| SDL_TEXTUREBLENDMODE_BLEND \| SDL_TEXTUREBLENDMODE_ADD \| SDL_TEXTUREBLENDMODE_MOD), 0, SDL_RenderCopy_ABGR8888_RGB888_Modulate_Blend },
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	100 { SDL_PIXELFORMAT_ABGR8888, SDL_PIXELFORMAT_RGB888, (SDL_TEXTUREMODULATE_COLOR \| SDL_TEXTUREMODULATE_ALPHA), (SDL_TEXTUREBLENDMODE_MASK \| SDL_TEXTUREBLENDMODE_BLEND \| SDL_TEXTUREBLENDMODE_ADD \| SDL_TEXTUREBLENDMODE_MOD), SDL_TEXTURESCALEMODE_FAST, SDL_RenderCopy_ABGR8888_RGB888_Modulate_Blend_Scale },
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	101 { SDL_PIXELFORMAT_ABGR8888, SDL_PIXELFORMAT_BGR888, 0, 0, SDL_TEXTURESCALEMODE_FAST, SDL_RenderCopy_ABGR8888_BGR888_Scale },
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	102 { SDL_PIXELFORMAT_ABGR8888, SDL_PIXELFORMAT_BGR888, 0, (SDL_TEXTUREBLENDMODE_MASK \| SDL_TEXTUREBLENDMODE_BLEND \| SDL_TEXTUREBLENDMODE_ADD \| SDL_TEXTUREBLENDMODE_MOD), 0, SDL_RenderCopy_ABGR8888_BGR888_Blend },
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	103 { SDL_PIXELFORMAT_ABGR8888, SDL_PIXELFORMAT_BGR888, 0, (SDL_TEXTUREBLENDMODE_MASK \| SDL_TEXTUREBLENDMODE_BLEND \| SDL_TEXTUREBLENDMODE_ADD \| SDL_TEXTUREBLENDMODE_MOD), SDL_TEXTURESCALEMODE_FAST, SDL_RenderCopy_ABGR8888_BGR888_Blend_Scale },
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	104 { SDL_PIXELFORMAT_ABGR8888, SDL_PIXELFORMAT_BGR888, (SDL_TEXTUREMODULATE_COLOR \| SDL_TEXTUREMODULATE_ALPHA), 0, 0, SDL_RenderCopy_ABGR8888_BGR888_Modulate },
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	105 { SDL_PIXELFORMAT_ABGR8888, SDL_PIXELFORMAT_BGR888, (SDL_TEXTUREMODULATE_COLOR \| SDL_TEXTUREMODULATE_ALPHA), 0, SDL_TEXTURESCALEMODE_FAST, SDL_RenderCopy_ABGR8888_BGR888_Modulate_Scale },
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	106 { SDL_PIXELFORMAT_ABGR8888, SDL_PIXELFORMAT_BGR888, (SDL_TEXTUREMODULATE_COLOR \| SDL_TEXTUREMODULATE_ALPHA), (SDL_TEXTUREBLENDMODE_MASK \| SDL_TEXTUREBLENDMODE_BLEND \| SDL_TEXTUREBLENDMODE_ADD \| SDL_TEXTUREBLENDMODE_MOD), 0, SDL_RenderCopy_ABGR8888_BGR888_Modulate_Blend },
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	107 { SDL_PIXELFORMAT_ABGR8888, SDL_PIXELFORMAT_BGR888, (SDL_TEXTUREMODULATE_COLOR \| SDL_TEXTUREMODULATE_ALPHA), (SDL_TEXTUREBLENDMODE_MASK \| SDL_TEXTUREBLENDMODE_BLEND \| SDL_TEXTUREBLENDMODE_ADD \| SDL_TEXTUREBLENDMODE_MOD), SDL_TEXTURESCALEMODE_FAST, SDL_RenderCopy_ABGR8888_BGR888_Modulate_Blend_Scale },
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	108 { SDL_PIXELFORMAT_BGRA8888, SDL_PIXELFORMAT_RGB888, 0, 0, SDL_TEXTURESCALEMODE_FAST, SDL_RenderCopy_BGRA8888_RGB888_Scale },
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	109 { SDL_PIXELFORMAT_BGRA8888, SDL_PIXELFORMAT_RGB888, 0, (SDL_TEXTUREBLENDMODE_MASK \| SDL_TEXTUREBLENDMODE_BLEND \| SDL_TEXTUREBLENDMODE_ADD \| SDL_TEXTUREBLENDMODE_MOD), 0, SDL_RenderCopy_BGRA8888_RGB888_Blend },
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	110 { SDL_PIXELFORMAT_BGRA8888, SDL_PIXELFORMAT_RGB888, 0, (SDL_TEXTUREBLENDMODE_MASK \| SDL_TEXTUREBLENDMODE_BLEND \| SDL_TEXTUREBLENDMODE_ADD \| SDL_TEXTUREBLENDMODE_MOD), SDL_TEXTURESCALEMODE_FAST, SDL_RenderCopy_BGRA8888_RGB888_Blend_Scale },
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	111 { SDL_PIXELFORMAT_BGRA8888, SDL_PIXELFORMAT_RGB888, (SDL_TEXTUREMODULATE_COLOR \| SDL_TEXTUREMODULATE_ALPHA), 0, 0, SDL_RenderCopy_BGRA8888_RGB888_Modulate },
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	112 { SDL_PIXELFORMAT_BGRA8888, SDL_PIXELFORMAT_RGB888, (SDL_TEXTUREMODULATE_COLOR \| SDL_TEXTUREMODULATE_ALPHA), 0, SDL_TEXTURESCALEMODE_FAST, SDL_RenderCopy_BGRA8888_RGB888_Modulate_Scale },
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	113 { SDL_PIXELFORMAT_BGRA8888, SDL_PIXELFORMAT_RGB888, (SDL_TEXTUREMODULATE_COLOR \| SDL_TEXTUREMODULATE_ALPHA), (SDL_TEXTUREBLENDMODE_MASK \| SDL_TEXTUREBLENDMODE_BLEND \| SDL_TEXTUREBLENDMODE_ADD \| SDL_TEXTUREBLENDMODE_MOD), 0, SDL_RenderCopy_BGRA8888_RGB888_Modulate_Blend },
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	114 { SDL_PIXELFORMAT_BGRA8888, SDL_PIXELFORMAT_RGB888, (SDL_TEXTUREMODULATE_COLOR \| SDL_TEXTUREMODULATE_ALPHA), (SDL_TEXTUREBLENDMODE_MASK \| SDL_TEXTUREBLENDMODE_BLEND \| SDL_TEXTUREBLENDMODE_ADD \| SDL_TEXTUREBLENDMODE_MOD), SDL_TEXTURESCALEMODE_FAST, SDL_RenderCopy_BGRA8888_RGB888_Modulate_Blend_Scale },
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	115 { SDL_PIXELFORMAT_BGRA8888, SDL_PIXELFORMAT_BGR888, 0, 0, SDL_TEXTURESCALEMODE_FAST, SDL_RenderCopy_BGRA8888_BGR888_Scale },
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	116 { SDL_PIXELFORMAT_BGRA8888, SDL_PIXELFORMAT_BGR888, 0, (SDL_TEXTUREBLENDMODE_MASK \| SDL_TEXTUREBLENDMODE_BLEND \| SDL_TEXTUREBLENDMODE_ADD \| SDL_TEXTUREBLENDMODE_MOD), 0, SDL_RenderCopy_BGRA8888_BGR888_Blend },
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	117 { SDL_PIXELFORMAT_BGRA8888, SDL_PIXELFORMAT_BGR888, 0, (SDL_TEXTUREBLENDMODE_MASK \| SDL_TEXTUREBLENDMODE_BLEND \| SDL_TEXTUREBLENDMODE_ADD \| SDL_TEXTUREBLENDMODE_MOD), SDL_TEXTURESCALEMODE_FAST, SDL_RenderCopy_BGRA8888_BGR888_Blend_Scale },
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	118 { SDL_PIXELFORMAT_BGRA8888, SDL_PIXELFORMAT_BGR888, (SDL_TEXTUREMODULATE_COLOR \| SDL_TEXTUREMODULATE_ALPHA), 0, 0, SDL_RenderCopy_BGRA8888_BGR888_Modulate },
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	119 { SDL_PIXELFORMAT_BGRA8888, SDL_PIXELFORMAT_BGR888, (SDL_TEXTUREMODULATE_COLOR \| SDL_TEXTUREMODULATE_ALPHA), 0, SDL_TEXTURESCALEMODE_FAST, SDL_RenderCopy_BGRA8888_BGR888_Modulate_Scale },
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	120 { SDL_PIXELFORMAT_BGRA8888, SDL_PIXELFORMAT_BGR888, (SDL_TEXTUREMODULATE_COLOR \| SDL_TEXTUREMODULATE_ALPHA), (SDL_TEXTUREBLENDMODE_MASK \| SDL_TEXTUREBLENDMODE_BLEND \| SDL_TEXTUREBLENDMODE_ADD \| SDL_TEXTUREBLENDMODE_MOD), 0, SDL_RenderCopy_BGRA8888_BGR888_Modulate_Blend },
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	121 { SDL_PIXELFORMAT_BGRA8888, SDL_PIXELFORMAT_BGR888, (SDL_TEXTUREMODULATE_COLOR \| SDL_TEXTUREMODULATE_ALPHA), (SDL_TEXTUREBLENDMODE_MASK \| SDL_TEXTUREBLENDMODE_BLEND \| SDL_TEXTUREBLENDMODE_ADD \| SDL_TEXTUREBLENDMODE_MOD), SDL_TEXTURESCALEMODE_FAST, SDL_RenderCopy_BGRA8888_BGR888_Modulate_Blend_Scale },
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	122 };
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	123
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	124 SDL_RenderCopyFunc SDL_GetRenderCopyFunc(Uint32 src_format, Uint32 dst_format, int modMode, int blendMode, int scaleMode)
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	125 {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	126 int i;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	127
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	128 for (i = 0; i < SDL_arraysize(SDL_RenderCopyFuncTable); ++i) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	129 if (src_format != SDL_RenderCopyFuncTable[i].src_format) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	130 continue;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	131 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	132 if (dst_format != SDL_RenderCopyFuncTable[i].dst_format) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	133 continue;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	134 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	135 if ((modMode & SDL_RenderCopyFuncTable[i].modMode) != modMode) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	136 continue;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	137 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	138 if ((blendMode & SDL_RenderCopyFuncTable[i].blendMode) != blendMode) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	139 continue;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	140 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	141 if ((scaleMode & SDL_RenderCopyFuncTable[i].scaleMode) != scaleMode) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	142 continue;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	143 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	144 return SDL_RenderCopyFuncTable[i].func;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	145 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	146 return NULL;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	147 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	148
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	149 int SDL_RenderCopy_RGB888_RGB888_Scale(SDL_RenderCopyData *data)
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	150 {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	151 const int flags = data->flags;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	152 int srcy, srcx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	153 int posy, posx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	154 int incy, incx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	155
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	156 srcy = 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	157 posy = 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	158 incy = (data->src_h << 16) / data->dst_h;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	159 incx = (data->src_w << 16) / data->dst_w;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	160
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	161 while (data->dst_h--) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	162 Uint32 *src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	163 Uint32 dst = (Uint32 )data->dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	164 int n = data->dst_w;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	165 srcx = -1;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	166 posx = 0x10000L;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	167 while (posy >= 0x10000L) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	168 ++srcy;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	169 posy -= 0x10000L;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	170 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	171 while (n--) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	172 if (posx >= 0x10000L) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	173 while (posx >= 0x10000L) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	174 ++srcx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	175 posx -= 0x10000L;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	176 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	177 src = (Uint32 )(data->src + (srcy data->src_pitch) + (srcx * 4));
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	178 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	179 dst = src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	180 posx += incx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	181 ++dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	182 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	183 posy += incy;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	184 data->dst += data->dst_pitch;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	185 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	186 return 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	187 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	188
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	189 int SDL_RenderCopy_RGB888_RGB888_Blend(SDL_RenderCopyData *data)
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	190 {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	191 const int flags = data->flags;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	192 Uint32 srcpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	193 Uint32 srcR, srcG, srcB, srcA;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	194 Uint32 dstpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	195 Uint32 dstR, dstG, dstB, dstA;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	196
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	197 while (data->dst_h--) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	198 Uint32 src = (Uint32 )data->src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	199 Uint32 dst = (Uint32 )data->dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	200 int n = data->dst_w;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	201 while (n--) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	202 srcpixel = *src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	203 srcR = (Uint8)(srcpixel >> 16); srcG = (Uint8)(srcpixel >> 8); srcB = (Uint8)srcpixel; srcA = 0xFF;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	204 dstpixel = *dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	205 dstR = (Uint8)(dstpixel >> 16); dstG = (Uint8)(dstpixel >> 8); dstB = (Uint8)dstpixel; dstA = 0xFF;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	206 if (flags & (SDL_RENDERCOPY_BLEND\|SDL_RENDERCOPY_ADD)) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	207 /* This goes away if we ever use premultiplied alpha */
1989 5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	208 if (srcA < 255) {
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	209 srcR = (srcR * srcA) / 255;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	210 srcG = (srcG * srcA) / 255;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	211 srcB = (srcB * srcA) / 255;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	212 }
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	213 }
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	214 switch (flags & (SDL_RENDERCOPY_MASK\|SDL_RENDERCOPY_BLEND\|SDL_RENDERCOPY_ADD\|SDL_RENDERCOPY_MOD)) {
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	215 case SDL_RENDERCOPY_MASK:
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	216 if (srcA) {
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	217 dstR = srcR;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	218 dstG = srcG;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	219 dstB = srcB;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	220 }
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	221 break;
1985 8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	222 case SDL_RENDERCOPY_BLEND:
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	223 dstR = srcR + ((255 - srcA) * dstR) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	224 dstG = srcG + ((255 - srcA) * dstG) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	225 dstB = srcB + ((255 - srcA) * dstB) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	226 break;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	227 case SDL_RENDERCOPY_ADD:
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	228 dstR = srcR + dstR; if (dstR > 255) dstR = 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	229 dstG = srcG + dstG; if (dstG > 255) dstG = 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	230 dstB = srcB + dstB; if (dstB > 255) dstB = 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	231 break;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	232 case SDL_RENDERCOPY_MOD:
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	233 dstR = (srcR * dstR) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	234 dstG = (srcG * dstG) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	235 dstB = (srcB * dstB) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	236 break;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	237 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	238 dstpixel = ((Uint32)dstR << 16) \| ((Uint32)dstG << 8) \| dstB;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	239 *dst = dstpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	240 ++src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	241 ++dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	242 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	243 data->src += data->src_pitch;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	244 data->dst += data->dst_pitch;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	245 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	246 return 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	247 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	248
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	249 int SDL_RenderCopy_RGB888_RGB888_Blend_Scale(SDL_RenderCopyData *data)
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	250 {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	251 const int flags = data->flags;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	252 Uint32 srcpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	253 Uint32 srcR, srcG, srcB, srcA;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	254 Uint32 dstpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	255 Uint32 dstR, dstG, dstB, dstA;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	256 int srcy, srcx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	257 int posy, posx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	258 int incy, incx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	259
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	260 srcy = 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	261 posy = 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	262 incy = (data->src_h << 16) / data->dst_h;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	263 incx = (data->src_w << 16) / data->dst_w;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	264
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	265 while (data->dst_h--) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	266 Uint32 *src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	267 Uint32 dst = (Uint32 )data->dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	268 int n = data->dst_w;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	269 srcx = -1;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	270 posx = 0x10000L;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	271 while (posy >= 0x10000L) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	272 ++srcy;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	273 posy -= 0x10000L;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	274 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	275 while (n--) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	276 if (posx >= 0x10000L) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	277 while (posx >= 0x10000L) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	278 ++srcx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	279 posx -= 0x10000L;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	280 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	281 src = (Uint32 )(data->src + (srcy data->src_pitch) + (srcx * 4));
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	282 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	283 srcpixel = *src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	284 srcR = (Uint8)(srcpixel >> 16); srcG = (Uint8)(srcpixel >> 8); srcB = (Uint8)srcpixel; srcA = 0xFF;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	285 dstpixel = *dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	286 dstR = (Uint8)(dstpixel >> 16); dstG = (Uint8)(dstpixel >> 8); dstB = (Uint8)dstpixel; dstA = 0xFF;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	287 if (flags & (SDL_RENDERCOPY_BLEND\|SDL_RENDERCOPY_ADD)) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	288 /* This goes away if we ever use premultiplied alpha */
1989 5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	289 if (srcA < 255) {
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	290 srcR = (srcR * srcA) / 255;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	291 srcG = (srcG * srcA) / 255;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	292 srcB = (srcB * srcA) / 255;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	293 }
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	294 }
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	295 switch (flags & (SDL_RENDERCOPY_MASK\|SDL_RENDERCOPY_BLEND\|SDL_RENDERCOPY_ADD\|SDL_RENDERCOPY_MOD)) {
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	296 case SDL_RENDERCOPY_MASK:
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	297 if (srcA) {
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	298 dstR = srcR;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	299 dstG = srcG;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	300 dstB = srcB;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	301 }
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	302 break;
1985 8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	303 case SDL_RENDERCOPY_BLEND:
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	304 dstR = srcR + ((255 - srcA) * dstR) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	305 dstG = srcG + ((255 - srcA) * dstG) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	306 dstB = srcB + ((255 - srcA) * dstB) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	307 break;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	308 case SDL_RENDERCOPY_ADD:
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	309 dstR = srcR + dstR; if (dstR > 255) dstR = 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	310 dstG = srcG + dstG; if (dstG > 255) dstG = 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	311 dstB = srcB + dstB; if (dstB > 255) dstB = 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	312 break;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	313 case SDL_RENDERCOPY_MOD:
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	314 dstR = (srcR * dstR) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	315 dstG = (srcG * dstG) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	316 dstB = (srcB * dstB) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	317 break;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	318 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	319 dstpixel = ((Uint32)dstR << 16) \| ((Uint32)dstG << 8) \| dstB;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	320 *dst = dstpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	321 posx += incx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	322 ++dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	323 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	324 posy += incy;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	325 data->dst += data->dst_pitch;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	326 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	327 return 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	328 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	329
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	330 int SDL_RenderCopy_RGB888_RGB888_Modulate(SDL_RenderCopyData *data)
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	331 {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	332 const int flags = data->flags;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	333 const Uint32 modulateR = data->r;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	334 const Uint32 modulateG = data->g;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	335 const Uint32 modulateB = data->b;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	336 const Uint32 modulateA = data->a;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	337 Uint32 pixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	338 Uint32 R, G, B, A;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	339
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	340 while (data->dst_h--) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	341 Uint32 src = (Uint32 )data->src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	342 Uint32 dst = (Uint32 )data->dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	343 int n = data->dst_w;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	344 while (n--) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	345 pixel = *src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	346 R = (Uint8)(pixel >> 16); G = (Uint8)(pixel >> 8); B = (Uint8)pixel; A = 0xFF;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	347 if (flags & SDL_RENDERCOPY_MODULATE_COLOR) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	348 R = (R * modulateR) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	349 G = (G * modulateG) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	350 B = (B * modulateB) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	351 }
1989 5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	352 if (flags & SDL_RENDERCOPY_MODULATE_ALPHA) {
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	353 A = (A * modulateA) / 255;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	354 }
1985 8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	355 pixel = ((Uint32)R << 16) \| ((Uint32)G << 8) \| B;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	356 *dst = pixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	357 ++src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	358 ++dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	359 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	360 data->src += data->src_pitch;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	361 data->dst += data->dst_pitch;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	362 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	363 return 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	364 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	365
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	366 int SDL_RenderCopy_RGB888_RGB888_Modulate_Scale(SDL_RenderCopyData *data)
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	367 {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	368 const int flags = data->flags;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	369 const Uint32 modulateR = data->r;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	370 const Uint32 modulateG = data->g;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	371 const Uint32 modulateB = data->b;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	372 const Uint32 modulateA = data->a;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	373 Uint32 pixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	374 Uint32 R, G, B, A;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	375 int srcy, srcx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	376 int posy, posx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	377 int incy, incx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	378
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	379 srcy = 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	380 posy = 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	381 incy = (data->src_h << 16) / data->dst_h;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	382 incx = (data->src_w << 16) / data->dst_w;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	383
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	384 while (data->dst_h--) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	385 Uint32 *src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	386 Uint32 dst = (Uint32 )data->dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	387 int n = data->dst_w;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	388 srcx = -1;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	389 posx = 0x10000L;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	390 while (posy >= 0x10000L) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	391 ++srcy;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	392 posy -= 0x10000L;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	393 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	394 while (n--) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	395 if (posx >= 0x10000L) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	396 while (posx >= 0x10000L) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	397 ++srcx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	398 posx -= 0x10000L;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	399 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	400 src = (Uint32 )(data->src + (srcy data->src_pitch) + (srcx * 4));
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	401 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	402 pixel = *src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	403 R = (Uint8)(pixel >> 16); G = (Uint8)(pixel >> 8); B = (Uint8)pixel; A = 0xFF;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	404 if (flags & SDL_RENDERCOPY_MODULATE_COLOR) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	405 R = (R * modulateR) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	406 G = (G * modulateG) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	407 B = (B * modulateB) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	408 }
1989 5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	409 if (flags & SDL_RENDERCOPY_MODULATE_ALPHA) {
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	410 A = (A * modulateA) / 255;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	411 }
1985 8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	412 pixel = ((Uint32)R << 16) \| ((Uint32)G << 8) \| B;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	413 *dst = pixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	414 posx += incx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	415 ++dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	416 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	417 posy += incy;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	418 data->dst += data->dst_pitch;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	419 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	420 return 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	421 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	422
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	423 int SDL_RenderCopy_RGB888_RGB888_Modulate_Blend(SDL_RenderCopyData *data)
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	424 {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	425 const int flags = data->flags;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	426 const Uint32 modulateR = data->r;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	427 const Uint32 modulateG = data->g;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	428 const Uint32 modulateB = data->b;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	429 const Uint32 modulateA = data->a;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	430 Uint32 srcpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	431 Uint32 srcR, srcG, srcB, srcA;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	432 Uint32 dstpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	433 Uint32 dstR, dstG, dstB, dstA;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	434
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	435 while (data->dst_h--) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	436 Uint32 src = (Uint32 )data->src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	437 Uint32 dst = (Uint32 )data->dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	438 int n = data->dst_w;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	439 while (n--) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	440 srcpixel = *src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	441 srcR = (Uint8)(srcpixel >> 16); srcG = (Uint8)(srcpixel >> 8); srcB = (Uint8)srcpixel; srcA = 0xFF;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	442 dstpixel = *dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	443 dstR = (Uint8)(dstpixel >> 16); dstG = (Uint8)(dstpixel >> 8); dstB = (Uint8)dstpixel; dstA = 0xFF;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	444 if (flags & SDL_RENDERCOPY_MODULATE_COLOR) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	445 srcR = (srcR * modulateR) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	446 srcG = (srcG * modulateG) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	447 srcB = (srcB * modulateB) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	448 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	449 if (flags & SDL_RENDERCOPY_MODULATE_ALPHA) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	450 srcA = (srcA * modulateA) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	451 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	452 if (flags & (SDL_RENDERCOPY_BLEND\|SDL_RENDERCOPY_ADD)) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	453 /* This goes away if we ever use premultiplied alpha */
1989 5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	454 if (srcA < 255) {
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	455 srcR = (srcR * srcA) / 255;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	456 srcG = (srcG * srcA) / 255;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	457 srcB = (srcB * srcA) / 255;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	458 }
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	459 }
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	460 switch (flags & (SDL_RENDERCOPY_MASK\|SDL_RENDERCOPY_BLEND\|SDL_RENDERCOPY_ADD\|SDL_RENDERCOPY_MOD)) {
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	461 case SDL_RENDERCOPY_MASK:
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	462 if (srcA) {
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	463 dstR = srcR;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	464 dstG = srcG;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	465 dstB = srcB;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	466 }
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	467 break;
1985 8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	468 case SDL_RENDERCOPY_BLEND:
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	469 dstR = srcR + ((255 - srcA) * dstR) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	470 dstG = srcG + ((255 - srcA) * dstG) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	471 dstB = srcB + ((255 - srcA) * dstB) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	472 break;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	473 case SDL_RENDERCOPY_ADD:
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	474 dstR = srcR + dstR; if (dstR > 255) dstR = 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	475 dstG = srcG + dstG; if (dstG > 255) dstG = 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	476 dstB = srcB + dstB; if (dstB > 255) dstB = 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	477 break;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	478 case SDL_RENDERCOPY_MOD:
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	479 dstR = (srcR * dstR) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	480 dstG = (srcG * dstG) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	481 dstB = (srcB * dstB) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	482 break;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	483 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	484 dstpixel = ((Uint32)dstR << 16) \| ((Uint32)dstG << 8) \| dstB;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	485 *dst = dstpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	486 ++src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	487 ++dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	488 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	489 data->src += data->src_pitch;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	490 data->dst += data->dst_pitch;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	491 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	492 return 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	493 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	494
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	495 int SDL_RenderCopy_RGB888_RGB888_Modulate_Blend_Scale(SDL_RenderCopyData *data)
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	496 {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	497 const int flags = data->flags;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	498 const Uint32 modulateR = data->r;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	499 const Uint32 modulateG = data->g;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	500 const Uint32 modulateB = data->b;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	501 const Uint32 modulateA = data->a;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	502 Uint32 srcpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	503 Uint32 srcR, srcG, srcB, srcA;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	504 Uint32 dstpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	505 Uint32 dstR, dstG, dstB, dstA;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	506 int srcy, srcx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	507 int posy, posx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	508 int incy, incx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	509
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	510 srcy = 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	511 posy = 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	512 incy = (data->src_h << 16) / data->dst_h;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	513 incx = (data->src_w << 16) / data->dst_w;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	514
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	515 while (data->dst_h--) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	516 Uint32 *src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	517 Uint32 dst = (Uint32 )data->dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	518 int n = data->dst_w;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	519 srcx = -1;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	520 posx = 0x10000L;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	521 while (posy >= 0x10000L) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	522 ++srcy;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	523 posy -= 0x10000L;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	524 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	525 while (n--) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	526 if (posx >= 0x10000L) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	527 while (posx >= 0x10000L) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	528 ++srcx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	529 posx -= 0x10000L;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	530 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	531 src = (Uint32 )(data->src + (srcy data->src_pitch) + (srcx * 4));
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	532 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	533 srcpixel = *src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	534 srcR = (Uint8)(srcpixel >> 16); srcG = (Uint8)(srcpixel >> 8); srcB = (Uint8)srcpixel; srcA = 0xFF;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	535 dstpixel = *dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	536 dstR = (Uint8)(dstpixel >> 16); dstG = (Uint8)(dstpixel >> 8); dstB = (Uint8)dstpixel; dstA = 0xFF;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	537 if (flags & SDL_RENDERCOPY_MODULATE_COLOR) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	538 srcR = (srcR * modulateR) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	539 srcG = (srcG * modulateG) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	540 srcB = (srcB * modulateB) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	541 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	542 if (flags & SDL_RENDERCOPY_MODULATE_ALPHA) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	543 srcA = (srcA * modulateA) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	544 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	545 if (flags & (SDL_RENDERCOPY_BLEND\|SDL_RENDERCOPY_ADD)) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	546 /* This goes away if we ever use premultiplied alpha */
1989 5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	547 if (srcA < 255) {
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	548 srcR = (srcR * srcA) / 255;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	549 srcG = (srcG * srcA) / 255;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	550 srcB = (srcB * srcA) / 255;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	551 }
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	552 }
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	553 switch (flags & (SDL_RENDERCOPY_MASK\|SDL_RENDERCOPY_BLEND\|SDL_RENDERCOPY_ADD\|SDL_RENDERCOPY_MOD)) {
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	554 case SDL_RENDERCOPY_MASK:
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	555 if (srcA) {
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	556 dstR = srcR;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	557 dstG = srcG;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	558 dstB = srcB;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	559 }
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	560 break;
1985 8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	561 case SDL_RENDERCOPY_BLEND:
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	562 dstR = srcR + ((255 - srcA) * dstR) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	563 dstG = srcG + ((255 - srcA) * dstG) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	564 dstB = srcB + ((255 - srcA) * dstB) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	565 break;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	566 case SDL_RENDERCOPY_ADD:
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	567 dstR = srcR + dstR; if (dstR > 255) dstR = 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	568 dstG = srcG + dstG; if (dstG > 255) dstG = 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	569 dstB = srcB + dstB; if (dstB > 255) dstB = 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	570 break;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	571 case SDL_RENDERCOPY_MOD:
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	572 dstR = (srcR * dstR) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	573 dstG = (srcG * dstG) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	574 dstB = (srcB * dstB) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	575 break;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	576 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	577 dstpixel = ((Uint32)dstR << 16) \| ((Uint32)dstG << 8) \| dstB;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	578 *dst = dstpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	579 posx += incx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	580 ++dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	581 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	582 posy += incy;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	583 data->dst += data->dst_pitch;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	584 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	585 return 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	586 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	587
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	588 int SDL_RenderCopy_RGB888_BGR888_Scale(SDL_RenderCopyData *data)
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	589 {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	590 const int flags = data->flags;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	591 Uint32 pixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	592 Uint32 R, G, B, A;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	593 int srcy, srcx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	594 int posy, posx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	595 int incy, incx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	596
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	597 srcy = 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	598 posy = 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	599 incy = (data->src_h << 16) / data->dst_h;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	600 incx = (data->src_w << 16) / data->dst_w;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	601
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	602 while (data->dst_h--) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	603 Uint32 *src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	604 Uint32 dst = (Uint32 )data->dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	605 int n = data->dst_w;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	606 srcx = -1;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	607 posx = 0x10000L;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	608 while (posy >= 0x10000L) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	609 ++srcy;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	610 posy -= 0x10000L;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	611 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	612 while (n--) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	613 if (posx >= 0x10000L) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	614 while (posx >= 0x10000L) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	615 ++srcx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	616 posx -= 0x10000L;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	617 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	618 src = (Uint32 )(data->src + (srcy data->src_pitch) + (srcx * 4));
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	619 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	620 pixel = *src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	621 R = (Uint8)(pixel >> 16); G = (Uint8)(pixel >> 8); B = (Uint8)pixel; A = 0xFF;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	622 pixel = ((Uint32)B << 16) \| ((Uint32)G << 8) \| R;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	623 *dst = pixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	624 posx += incx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	625 ++dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	626 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	627 posy += incy;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	628 data->dst += data->dst_pitch;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	629 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	630 return 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	631 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	632
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	633 int SDL_RenderCopy_RGB888_BGR888_Blend(SDL_RenderCopyData *data)
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	634 {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	635 const int flags = data->flags;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	636 Uint32 srcpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	637 Uint32 srcR, srcG, srcB, srcA;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	638 Uint32 dstpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	639 Uint32 dstR, dstG, dstB, dstA;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	640
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	641 while (data->dst_h--) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	642 Uint32 src = (Uint32 )data->src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	643 Uint32 dst = (Uint32 )data->dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	644 int n = data->dst_w;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	645 while (n--) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	646 srcpixel = *src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	647 srcR = (Uint8)(srcpixel >> 16); srcG = (Uint8)(srcpixel >> 8); srcB = (Uint8)srcpixel; srcA = 0xFF;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	648 dstpixel = *dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	649 dstB = (Uint8)(dstpixel >> 16); dstG = (Uint8)(dstpixel >> 8); dstR = (Uint8)dstpixel; dstA = 0xFF;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	650 if (flags & (SDL_RENDERCOPY_BLEND\|SDL_RENDERCOPY_ADD)) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	651 /* This goes away if we ever use premultiplied alpha */
1989 5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	652 if (srcA < 255) {
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	653 srcR = (srcR * srcA) / 255;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	654 srcG = (srcG * srcA) / 255;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	655 srcB = (srcB * srcA) / 255;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	656 }
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	657 }
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	658 switch (flags & (SDL_RENDERCOPY_MASK\|SDL_RENDERCOPY_BLEND\|SDL_RENDERCOPY_ADD\|SDL_RENDERCOPY_MOD)) {
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	659 case SDL_RENDERCOPY_MASK:
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	660 if (srcA) {
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	661 dstR = srcR;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	662 dstG = srcG;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	663 dstB = srcB;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	664 }
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	665 break;
1985 8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	666 case SDL_RENDERCOPY_BLEND:
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	667 dstR = srcR + ((255 - srcA) * dstR) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	668 dstG = srcG + ((255 - srcA) * dstG) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	669 dstB = srcB + ((255 - srcA) * dstB) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	670 break;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	671 case SDL_RENDERCOPY_ADD:
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	672 dstR = srcR + dstR; if (dstR > 255) dstR = 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	673 dstG = srcG + dstG; if (dstG > 255) dstG = 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	674 dstB = srcB + dstB; if (dstB > 255) dstB = 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	675 break;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	676 case SDL_RENDERCOPY_MOD:
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	677 dstR = (srcR * dstR) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	678 dstG = (srcG * dstG) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	679 dstB = (srcB * dstB) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	680 break;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	681 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	682 dstpixel = ((Uint32)dstB << 16) \| ((Uint32)dstG << 8) \| dstR;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	683 *dst = dstpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	684 ++src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	685 ++dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	686 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	687 data->src += data->src_pitch;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	688 data->dst += data->dst_pitch;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	689 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	690 return 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	691 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	692
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	693 int SDL_RenderCopy_RGB888_BGR888_Blend_Scale(SDL_RenderCopyData *data)
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	694 {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	695 const int flags = data->flags;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	696 Uint32 srcpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	697 Uint32 srcR, srcG, srcB, srcA;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	698 Uint32 dstpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	699 Uint32 dstR, dstG, dstB, dstA;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	700 int srcy, srcx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	701 int posy, posx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	702 int incy, incx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	703
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	704 srcy = 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	705 posy = 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	706 incy = (data->src_h << 16) / data->dst_h;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	707 incx = (data->src_w << 16) / data->dst_w;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	708
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	709 while (data->dst_h--) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	710 Uint32 *src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	711 Uint32 dst = (Uint32 )data->dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	712 int n = data->dst_w;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	713 srcx = -1;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	714 posx = 0x10000L;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	715 while (posy >= 0x10000L) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	716 ++srcy;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	717 posy -= 0x10000L;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	718 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	719 while (n--) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	720 if (posx >= 0x10000L) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	721 while (posx >= 0x10000L) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	722 ++srcx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	723 posx -= 0x10000L;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	724 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	725 src = (Uint32 )(data->src + (srcy data->src_pitch) + (srcx * 4));
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	726 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	727 srcpixel = *src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	728 srcR = (Uint8)(srcpixel >> 16); srcG = (Uint8)(srcpixel >> 8); srcB = (Uint8)srcpixel; srcA = 0xFF;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	729 dstpixel = *dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	730 dstB = (Uint8)(dstpixel >> 16); dstG = (Uint8)(dstpixel >> 8); dstR = (Uint8)dstpixel; dstA = 0xFF;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	731 if (flags & (SDL_RENDERCOPY_BLEND\|SDL_RENDERCOPY_ADD)) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	732 /* This goes away if we ever use premultiplied alpha */
1989 5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	733 if (srcA < 255) {
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	734 srcR = (srcR * srcA) / 255;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	735 srcG = (srcG * srcA) / 255;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	736 srcB = (srcB * srcA) / 255;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	737 }
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	738 }
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	739 switch (flags & (SDL_RENDERCOPY_MASK\|SDL_RENDERCOPY_BLEND\|SDL_RENDERCOPY_ADD\|SDL_RENDERCOPY_MOD)) {
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	740 case SDL_RENDERCOPY_MASK:
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	741 if (srcA) {
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	742 dstR = srcR;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	743 dstG = srcG;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	744 dstB = srcB;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	745 }
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	746 break;
1985 8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	747 case SDL_RENDERCOPY_BLEND:
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	748 dstR = srcR + ((255 - srcA) * dstR) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	749 dstG = srcG + ((255 - srcA) * dstG) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	750 dstB = srcB + ((255 - srcA) * dstB) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	751 break;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	752 case SDL_RENDERCOPY_ADD:
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	753 dstR = srcR + dstR; if (dstR > 255) dstR = 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	754 dstG = srcG + dstG; if (dstG > 255) dstG = 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	755 dstB = srcB + dstB; if (dstB > 255) dstB = 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	756 break;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	757 case SDL_RENDERCOPY_MOD:
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	758 dstR = (srcR * dstR) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	759 dstG = (srcG * dstG) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	760 dstB = (srcB * dstB) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	761 break;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	762 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	763 dstpixel = ((Uint32)dstB << 16) \| ((Uint32)dstG << 8) \| dstR;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	764 *dst = dstpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	765 posx += incx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	766 ++dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	767 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	768 posy += incy;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	769 data->dst += data->dst_pitch;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	770 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	771 return 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	772 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	773
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	774 int SDL_RenderCopy_RGB888_BGR888_Modulate(SDL_RenderCopyData *data)
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	775 {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	776 const int flags = data->flags;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	777 const Uint32 modulateR = data->r;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	778 const Uint32 modulateG = data->g;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	779 const Uint32 modulateB = data->b;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	780 const Uint32 modulateA = data->a;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	781 Uint32 pixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	782 Uint32 R, G, B, A;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	783
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	784 while (data->dst_h--) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	785 Uint32 src = (Uint32 )data->src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	786 Uint32 dst = (Uint32 )data->dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	787 int n = data->dst_w;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	788 while (n--) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	789 pixel = *src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	790 R = (Uint8)(pixel >> 16); G = (Uint8)(pixel >> 8); B = (Uint8)pixel; A = 0xFF;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	791 if (flags & SDL_RENDERCOPY_MODULATE_COLOR) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	792 R = (R * modulateR) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	793 G = (G * modulateG) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	794 B = (B * modulateB) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	795 }
1989 5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	796 if (flags & SDL_RENDERCOPY_MODULATE_ALPHA) {
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	797 A = (A * modulateA) / 255;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	798 }
1985 8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	799 pixel = ((Uint32)B << 16) \| ((Uint32)G << 8) \| R;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	800 *dst = pixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	801 ++src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	802 ++dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	803 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	804 data->src += data->src_pitch;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	805 data->dst += data->dst_pitch;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	806 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	807 return 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	808 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	809
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	810 int SDL_RenderCopy_RGB888_BGR888_Modulate_Scale(SDL_RenderCopyData *data)
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	811 {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	812 const int flags = data->flags;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	813 const Uint32 modulateR = data->r;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	814 const Uint32 modulateG = data->g;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	815 const Uint32 modulateB = data->b;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	816 const Uint32 modulateA = data->a;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	817 Uint32 pixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	818 Uint32 R, G, B, A;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	819 int srcy, srcx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	820 int posy, posx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	821 int incy, incx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	822
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	823 srcy = 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	824 posy = 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	825 incy = (data->src_h << 16) / data->dst_h;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	826 incx = (data->src_w << 16) / data->dst_w;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	827
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	828 while (data->dst_h--) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	829 Uint32 *src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	830 Uint32 dst = (Uint32 )data->dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	831 int n = data->dst_w;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	832 srcx = -1;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	833 posx = 0x10000L;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	834 while (posy >= 0x10000L) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	835 ++srcy;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	836 posy -= 0x10000L;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	837 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	838 while (n--) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	839 if (posx >= 0x10000L) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	840 while (posx >= 0x10000L) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	841 ++srcx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	842 posx -= 0x10000L;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	843 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	844 src = (Uint32 )(data->src + (srcy data->src_pitch) + (srcx * 4));
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	845 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	846 pixel = *src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	847 R = (Uint8)(pixel >> 16); G = (Uint8)(pixel >> 8); B = (Uint8)pixel; A = 0xFF;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	848 if (flags & SDL_RENDERCOPY_MODULATE_COLOR) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	849 R = (R * modulateR) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	850 G = (G * modulateG) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	851 B = (B * modulateB) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	852 }
1989 5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	853 if (flags & SDL_RENDERCOPY_MODULATE_ALPHA) {
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	854 A = (A * modulateA) / 255;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	855 }
1985 8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	856 pixel = ((Uint32)B << 16) \| ((Uint32)G << 8) \| R;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	857 *dst = pixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	858 posx += incx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	859 ++dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	860 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	861 posy += incy;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	862 data->dst += data->dst_pitch;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	863 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	864 return 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	865 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	866
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	867 int SDL_RenderCopy_RGB888_BGR888_Modulate_Blend(SDL_RenderCopyData *data)
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	868 {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	869 const int flags = data->flags;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	870 const Uint32 modulateR = data->r;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	871 const Uint32 modulateG = data->g;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	872 const Uint32 modulateB = data->b;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	873 const Uint32 modulateA = data->a;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	874 Uint32 srcpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	875 Uint32 srcR, srcG, srcB, srcA;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	876 Uint32 dstpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	877 Uint32 dstR, dstG, dstB, dstA;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	878
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	879 while (data->dst_h--) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	880 Uint32 src = (Uint32 )data->src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	881 Uint32 dst = (Uint32 )data->dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	882 int n = data->dst_w;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	883 while (n--) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	884 srcpixel = *src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	885 srcR = (Uint8)(srcpixel >> 16); srcG = (Uint8)(srcpixel >> 8); srcB = (Uint8)srcpixel; srcA = 0xFF;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	886 dstpixel = *dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	887 dstB = (Uint8)(dstpixel >> 16); dstG = (Uint8)(dstpixel >> 8); dstR = (Uint8)dstpixel; dstA = 0xFF;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	888 if (flags & SDL_RENDERCOPY_MODULATE_COLOR) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	889 srcR = (srcR * modulateR) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	890 srcG = (srcG * modulateG) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	891 srcB = (srcB * modulateB) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	892 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	893 if (flags & SDL_RENDERCOPY_MODULATE_ALPHA) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	894 srcA = (srcA * modulateA) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	895 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	896 if (flags & (SDL_RENDERCOPY_BLEND\|SDL_RENDERCOPY_ADD)) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	897 /* This goes away if we ever use premultiplied alpha */
1989 5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	898 if (srcA < 255) {
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	899 srcR = (srcR * srcA) / 255;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	900 srcG = (srcG * srcA) / 255;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	901 srcB = (srcB * srcA) / 255;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	902 }
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	903 }
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	904 switch (flags & (SDL_RENDERCOPY_MASK\|SDL_RENDERCOPY_BLEND\|SDL_RENDERCOPY_ADD\|SDL_RENDERCOPY_MOD)) {
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	905 case SDL_RENDERCOPY_MASK:
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	906 if (srcA) {
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	907 dstR = srcR;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	908 dstG = srcG;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	909 dstB = srcB;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	910 }
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	911 break;
1985 8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	912 case SDL_RENDERCOPY_BLEND:
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	913 dstR = srcR + ((255 - srcA) * dstR) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	914 dstG = srcG + ((255 - srcA) * dstG) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	915 dstB = srcB + ((255 - srcA) * dstB) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	916 break;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	917 case SDL_RENDERCOPY_ADD:
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	918 dstR = srcR + dstR; if (dstR > 255) dstR = 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	919 dstG = srcG + dstG; if (dstG > 255) dstG = 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	920 dstB = srcB + dstB; if (dstB > 255) dstB = 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	921 break;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	922 case SDL_RENDERCOPY_MOD:
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	923 dstR = (srcR * dstR) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	924 dstG = (srcG * dstG) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	925 dstB = (srcB * dstB) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	926 break;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	927 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	928 dstpixel = ((Uint32)dstB << 16) \| ((Uint32)dstG << 8) \| dstR;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	929 *dst = dstpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	930 ++src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	931 ++dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	932 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	933 data->src += data->src_pitch;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	934 data->dst += data->dst_pitch;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	935 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	936 return 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	937 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	938
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	939 int SDL_RenderCopy_RGB888_BGR888_Modulate_Blend_Scale(SDL_RenderCopyData *data)
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	940 {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	941 const int flags = data->flags;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	942 const Uint32 modulateR = data->r;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	943 const Uint32 modulateG = data->g;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	944 const Uint32 modulateB = data->b;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	945 const Uint32 modulateA = data->a;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	946 Uint32 srcpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	947 Uint32 srcR, srcG, srcB, srcA;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	948 Uint32 dstpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	949 Uint32 dstR, dstG, dstB, dstA;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	950 int srcy, srcx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	951 int posy, posx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	952 int incy, incx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	953
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	954 srcy = 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	955 posy = 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	956 incy = (data->src_h << 16) / data->dst_h;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	957 incx = (data->src_w << 16) / data->dst_w;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	958
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	959 while (data->dst_h--) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	960 Uint32 *src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	961 Uint32 dst = (Uint32 )data->dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	962 int n = data->dst_w;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	963 srcx = -1;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	964 posx = 0x10000L;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	965 while (posy >= 0x10000L) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	966 ++srcy;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	967 posy -= 0x10000L;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	968 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	969 while (n--) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	970 if (posx >= 0x10000L) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	971 while (posx >= 0x10000L) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	972 ++srcx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	973 posx -= 0x10000L;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	974 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	975 src = (Uint32 )(data->src + (srcy data->src_pitch) + (srcx * 4));
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	976 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	977 srcpixel = *src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	978 srcR = (Uint8)(srcpixel >> 16); srcG = (Uint8)(srcpixel >> 8); srcB = (Uint8)srcpixel; srcA = 0xFF;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	979 dstpixel = *dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	980 dstB = (Uint8)(dstpixel >> 16); dstG = (Uint8)(dstpixel >> 8); dstR = (Uint8)dstpixel; dstA = 0xFF;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	981 if (flags & SDL_RENDERCOPY_MODULATE_COLOR) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	982 srcR = (srcR * modulateR) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	983 srcG = (srcG * modulateG) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	984 srcB = (srcB * modulateB) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	985 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	986 if (flags & SDL_RENDERCOPY_MODULATE_ALPHA) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	987 srcA = (srcA * modulateA) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	988 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	989 if (flags & (SDL_RENDERCOPY_BLEND\|SDL_RENDERCOPY_ADD)) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	990 /* This goes away if we ever use premultiplied alpha */
1989 5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	991 if (srcA < 255) {
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	992 srcR = (srcR * srcA) / 255;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	993 srcG = (srcG * srcA) / 255;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	994 srcB = (srcB * srcA) / 255;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	995 }
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	996 }
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	997 switch (flags & (SDL_RENDERCOPY_MASK\|SDL_RENDERCOPY_BLEND\|SDL_RENDERCOPY_ADD\|SDL_RENDERCOPY_MOD)) {
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	998 case SDL_RENDERCOPY_MASK:
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	999 if (srcA) {
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	1000 dstR = srcR;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	1001 dstG = srcG;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	1002 dstB = srcB;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	1003 }
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	1004 break;
1985 8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1005 case SDL_RENDERCOPY_BLEND:
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1006 dstR = srcR + ((255 - srcA) * dstR) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1007 dstG = srcG + ((255 - srcA) * dstG) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1008 dstB = srcB + ((255 - srcA) * dstB) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1009 break;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1010 case SDL_RENDERCOPY_ADD:
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1011 dstR = srcR + dstR; if (dstR > 255) dstR = 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1012 dstG = srcG + dstG; if (dstG > 255) dstG = 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1013 dstB = srcB + dstB; if (dstB > 255) dstB = 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1014 break;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1015 case SDL_RENDERCOPY_MOD:
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1016 dstR = (srcR * dstR) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1017 dstG = (srcG * dstG) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1018 dstB = (srcB * dstB) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1019 break;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1020 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1021 dstpixel = ((Uint32)dstB << 16) \| ((Uint32)dstG << 8) \| dstR;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1022 *dst = dstpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1023 posx += incx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1024 ++dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1025 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1026 posy += incy;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1027 data->dst += data->dst_pitch;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1028 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1029 return 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1030 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1031
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1032 int SDL_RenderCopy_BGR888_RGB888_Scale(SDL_RenderCopyData *data)
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1033 {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1034 const int flags = data->flags;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1035 Uint32 pixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1036 Uint32 R, G, B, A;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1037 int srcy, srcx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1038 int posy, posx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1039 int incy, incx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1040
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1041 srcy = 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1042 posy = 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1043 incy = (data->src_h << 16) / data->dst_h;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1044 incx = (data->src_w << 16) / data->dst_w;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1045
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1046 while (data->dst_h--) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1047 Uint32 *src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1048 Uint32 dst = (Uint32 )data->dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1049 int n = data->dst_w;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1050 srcx = -1;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1051 posx = 0x10000L;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1052 while (posy >= 0x10000L) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1053 ++srcy;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1054 posy -= 0x10000L;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1055 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1056 while (n--) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1057 if (posx >= 0x10000L) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1058 while (posx >= 0x10000L) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1059 ++srcx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1060 posx -= 0x10000L;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1061 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1062 src = (Uint32 )(data->src + (srcy data->src_pitch) + (srcx * 4));
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1063 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1064 pixel = *src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1065 B = (Uint8)(pixel >> 16); G = (Uint8)(pixel >> 8); R = (Uint8)pixel; A = 0xFF;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1066 pixel = ((Uint32)R << 16) \| ((Uint32)G << 8) \| B;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1067 *dst = pixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1068 posx += incx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1069 ++dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1070 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1071 posy += incy;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1072 data->dst += data->dst_pitch;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1073 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1074 return 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1075 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1076
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1077 int SDL_RenderCopy_BGR888_RGB888_Blend(SDL_RenderCopyData *data)
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1078 {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1079 const int flags = data->flags;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1080 Uint32 srcpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1081 Uint32 srcR, srcG, srcB, srcA;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1082 Uint32 dstpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1083 Uint32 dstR, dstG, dstB, dstA;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1084
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1085 while (data->dst_h--) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1086 Uint32 src = (Uint32 )data->src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1087 Uint32 dst = (Uint32 )data->dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1088 int n = data->dst_w;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1089 while (n--) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1090 srcpixel = *src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1091 srcB = (Uint8)(srcpixel >> 16); srcG = (Uint8)(srcpixel >> 8); srcR = (Uint8)srcpixel; srcA = 0xFF;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1092 dstpixel = *dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1093 dstR = (Uint8)(dstpixel >> 16); dstG = (Uint8)(dstpixel >> 8); dstB = (Uint8)dstpixel; dstA = 0xFF;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1094 if (flags & (SDL_RENDERCOPY_BLEND\|SDL_RENDERCOPY_ADD)) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1095 /* This goes away if we ever use premultiplied alpha */
1989 5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	1096 if (srcA < 255) {
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	1097 srcR = (srcR * srcA) / 255;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	1098 srcG = (srcG * srcA) / 255;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	1099 srcB = (srcB * srcA) / 255;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	1100 }
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	1101 }
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	1102 switch (flags & (SDL_RENDERCOPY_MASK\|SDL_RENDERCOPY_BLEND\|SDL_RENDERCOPY_ADD\|SDL_RENDERCOPY_MOD)) {
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	1103 case SDL_RENDERCOPY_MASK:
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	1104 if (srcA) {
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	1105 dstR = srcR;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	1106 dstG = srcG;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	1107 dstB = srcB;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	1108 }
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	1109 break;
1985 8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1110 case SDL_RENDERCOPY_BLEND:
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1111 dstR = srcR + ((255 - srcA) * dstR) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1112 dstG = srcG + ((255 - srcA) * dstG) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1113 dstB = srcB + ((255 - srcA) * dstB) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1114 break;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1115 case SDL_RENDERCOPY_ADD:
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1116 dstR = srcR + dstR; if (dstR > 255) dstR = 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1117 dstG = srcG + dstG; if (dstG > 255) dstG = 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1118 dstB = srcB + dstB; if (dstB > 255) dstB = 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1119 break;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1120 case SDL_RENDERCOPY_MOD:
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1121 dstR = (srcR * dstR) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1122 dstG = (srcG * dstG) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1123 dstB = (srcB * dstB) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1124 break;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1125 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1126 dstpixel = ((Uint32)dstR << 16) \| ((Uint32)dstG << 8) \| dstB;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1127 *dst = dstpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1128 ++src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1129 ++dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1130 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1131 data->src += data->src_pitch;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1132 data->dst += data->dst_pitch;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1133 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1134 return 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1135 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1136
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1137 int SDL_RenderCopy_BGR888_RGB888_Blend_Scale(SDL_RenderCopyData *data)
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1138 {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1139 const int flags = data->flags;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1140 Uint32 srcpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1141 Uint32 srcR, srcG, srcB, srcA;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1142 Uint32 dstpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1143 Uint32 dstR, dstG, dstB, dstA;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1144 int srcy, srcx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1145 int posy, posx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1146 int incy, incx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1147
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1148 srcy = 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1149 posy = 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1150 incy = (data->src_h << 16) / data->dst_h;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1151 incx = (data->src_w << 16) / data->dst_w;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1152
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1153 while (data->dst_h--) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1154 Uint32 *src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1155 Uint32 dst = (Uint32 )data->dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1156 int n = data->dst_w;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1157 srcx = -1;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1158 posx = 0x10000L;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1159 while (posy >= 0x10000L) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1160 ++srcy;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1161 posy -= 0x10000L;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1162 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1163 while (n--) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1164 if (posx >= 0x10000L) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1165 while (posx >= 0x10000L) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1166 ++srcx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1167 posx -= 0x10000L;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1168 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1169 src = (Uint32 )(data->src + (srcy data->src_pitch) + (srcx * 4));
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1170 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1171 srcpixel = *src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1172 srcB = (Uint8)(srcpixel >> 16); srcG = (Uint8)(srcpixel >> 8); srcR = (Uint8)srcpixel; srcA = 0xFF;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1173 dstpixel = *dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1174 dstR = (Uint8)(dstpixel >> 16); dstG = (Uint8)(dstpixel >> 8); dstB = (Uint8)dstpixel; dstA = 0xFF;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1175 if (flags & (SDL_RENDERCOPY_BLEND\|SDL_RENDERCOPY_ADD)) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1176 /* This goes away if we ever use premultiplied alpha */
1989 5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	1177 if (srcA < 255) {
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	1178 srcR = (srcR * srcA) / 255;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	1179 srcG = (srcG * srcA) / 255;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	1180 srcB = (srcB * srcA) / 255;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	1181 }
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	1182 }
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	1183 switch (flags & (SDL_RENDERCOPY_MASK\|SDL_RENDERCOPY_BLEND\|SDL_RENDERCOPY_ADD\|SDL_RENDERCOPY_MOD)) {
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	1184 case SDL_RENDERCOPY_MASK:
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	1185 if (srcA) {
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	1186 dstR = srcR;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	1187 dstG = srcG;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	1188 dstB = srcB;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	1189 }
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	1190 break;
1985 8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1191 case SDL_RENDERCOPY_BLEND:
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1192 dstR = srcR + ((255 - srcA) * dstR) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1193 dstG = srcG + ((255 - srcA) * dstG) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1194 dstB = srcB + ((255 - srcA) * dstB) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1195 break;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1196 case SDL_RENDERCOPY_ADD:
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1197 dstR = srcR + dstR; if (dstR > 255) dstR = 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1198 dstG = srcG + dstG; if (dstG > 255) dstG = 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1199 dstB = srcB + dstB; if (dstB > 255) dstB = 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1200 break;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1201 case SDL_RENDERCOPY_MOD:
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1202 dstR = (srcR * dstR) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1203 dstG = (srcG * dstG) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1204 dstB = (srcB * dstB) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1205 break;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1206 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1207 dstpixel = ((Uint32)dstR << 16) \| ((Uint32)dstG << 8) \| dstB;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1208 *dst = dstpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1209 posx += incx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1210 ++dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1211 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1212 posy += incy;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1213 data->dst += data->dst_pitch;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1214 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1215 return 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1216 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1217
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1218 int SDL_RenderCopy_BGR888_RGB888_Modulate(SDL_RenderCopyData *data)
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1219 {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1220 const int flags = data->flags;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1221 const Uint32 modulateR = data->r;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1222 const Uint32 modulateG = data->g;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1223 const Uint32 modulateB = data->b;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1224 const Uint32 modulateA = data->a;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1225 Uint32 pixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1226 Uint32 R, G, B, A;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1227
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1228 while (data->dst_h--) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1229 Uint32 src = (Uint32 )data->src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1230 Uint32 dst = (Uint32 )data->dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1231 int n = data->dst_w;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1232 while (n--) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1233 pixel = *src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1234 B = (Uint8)(pixel >> 16); G = (Uint8)(pixel >> 8); R = (Uint8)pixel; A = 0xFF;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1235 if (flags & SDL_RENDERCOPY_MODULATE_COLOR) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1236 R = (R * modulateR) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1237 G = (G * modulateG) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1238 B = (B * modulateB) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1239 }
1989 5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	1240 if (flags & SDL_RENDERCOPY_MODULATE_ALPHA) {
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	1241 A = (A * modulateA) / 255;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	1242 }
1985 8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1243 pixel = ((Uint32)R << 16) \| ((Uint32)G << 8) \| B;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1244 *dst = pixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1245 ++src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1246 ++dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1247 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1248 data->src += data->src_pitch;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1249 data->dst += data->dst_pitch;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1250 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1251 return 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1252 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1253
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1254 int SDL_RenderCopy_BGR888_RGB888_Modulate_Scale(SDL_RenderCopyData *data)
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1255 {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1256 const int flags = data->flags;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1257 const Uint32 modulateR = data->r;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1258 const Uint32 modulateG = data->g;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1259 const Uint32 modulateB = data->b;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1260 const Uint32 modulateA = data->a;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1261 Uint32 pixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1262 Uint32 R, G, B, A;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1263 int srcy, srcx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1264 int posy, posx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1265 int incy, incx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1266
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1267 srcy = 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1268 posy = 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1269 incy = (data->src_h << 16) / data->dst_h;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1270 incx = (data->src_w << 16) / data->dst_w;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1271
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1272 while (data->dst_h--) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1273 Uint32 *src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1274 Uint32 dst = (Uint32 )data->dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1275 int n = data->dst_w;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1276 srcx = -1;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1277 posx = 0x10000L;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1278 while (posy >= 0x10000L) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1279 ++srcy;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1280 posy -= 0x10000L;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1281 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1282 while (n--) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1283 if (posx >= 0x10000L) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1284 while (posx >= 0x10000L) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1285 ++srcx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1286 posx -= 0x10000L;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1287 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1288 src = (Uint32 )(data->src + (srcy data->src_pitch) + (srcx * 4));
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1289 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1290 pixel = *src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1291 B = (Uint8)(pixel >> 16); G = (Uint8)(pixel >> 8); R = (Uint8)pixel; A = 0xFF;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1292 if (flags & SDL_RENDERCOPY_MODULATE_COLOR) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1293 R = (R * modulateR) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1294 G = (G * modulateG) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1295 B = (B * modulateB) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1296 }
1989 5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	1297 if (flags & SDL_RENDERCOPY_MODULATE_ALPHA) {
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	1298 A = (A * modulateA) / 255;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	1299 }
1985 8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1300 pixel = ((Uint32)R << 16) \| ((Uint32)G << 8) \| B;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1301 *dst = pixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1302 posx += incx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1303 ++dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1304 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1305 posy += incy;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1306 data->dst += data->dst_pitch;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1307 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1308 return 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1309 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1310
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1311 int SDL_RenderCopy_BGR888_RGB888_Modulate_Blend(SDL_RenderCopyData *data)
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1312 {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1313 const int flags = data->flags;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1314 const Uint32 modulateR = data->r;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1315 const Uint32 modulateG = data->g;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1316 const Uint32 modulateB = data->b;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1317 const Uint32 modulateA = data->a;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1318 Uint32 srcpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1319 Uint32 srcR, srcG, srcB, srcA;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1320 Uint32 dstpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1321 Uint32 dstR, dstG, dstB, dstA;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1322
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1323 while (data->dst_h--) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1324 Uint32 src = (Uint32 )data->src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1325 Uint32 dst = (Uint32 )data->dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1326 int n = data->dst_w;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1327 while (n--) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1328 srcpixel = *src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1329 srcB = (Uint8)(srcpixel >> 16); srcG = (Uint8)(srcpixel >> 8); srcR = (Uint8)srcpixel; srcA = 0xFF;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1330 dstpixel = *dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1331 dstR = (Uint8)(dstpixel >> 16); dstG = (Uint8)(dstpixel >> 8); dstB = (Uint8)dstpixel; dstA = 0xFF;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1332 if (flags & SDL_RENDERCOPY_MODULATE_COLOR) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1333 srcR = (srcR * modulateR) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1334 srcG = (srcG * modulateG) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1335 srcB = (srcB * modulateB) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1336 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1337 if (flags & SDL_RENDERCOPY_MODULATE_ALPHA) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1338 srcA = (srcA * modulateA) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1339 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1340 if (flags & (SDL_RENDERCOPY_BLEND\|SDL_RENDERCOPY_ADD)) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1341 /* This goes away if we ever use premultiplied alpha */
1989 5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	1342 if (srcA < 255) {
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	1343 srcR = (srcR * srcA) / 255;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	1344 srcG = (srcG * srcA) / 255;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	1345 srcB = (srcB * srcA) / 255;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	1346 }
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	1347 }
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	1348 switch (flags & (SDL_RENDERCOPY_MASK\|SDL_RENDERCOPY_BLEND\|SDL_RENDERCOPY_ADD\|SDL_RENDERCOPY_MOD)) {
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	1349 case SDL_RENDERCOPY_MASK:
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	1350 if (srcA) {
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	1351 dstR = srcR;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	1352 dstG = srcG;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	1353 dstB = srcB;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	1354 }
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	1355 break;
1985 8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1356 case SDL_RENDERCOPY_BLEND:
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1357 dstR = srcR + ((255 - srcA) * dstR) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1358 dstG = srcG + ((255 - srcA) * dstG) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1359 dstB = srcB + ((255 - srcA) * dstB) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1360 break;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1361 case SDL_RENDERCOPY_ADD:
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1362 dstR = srcR + dstR; if (dstR > 255) dstR = 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1363 dstG = srcG + dstG; if (dstG > 255) dstG = 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1364 dstB = srcB + dstB; if (dstB > 255) dstB = 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1365 break;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1366 case SDL_RENDERCOPY_MOD:
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1367 dstR = (srcR * dstR) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1368 dstG = (srcG * dstG) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1369 dstB = (srcB * dstB) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1370 break;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1371 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1372 dstpixel = ((Uint32)dstR << 16) \| ((Uint32)dstG << 8) \| dstB;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1373 *dst = dstpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1374 ++src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1375 ++dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1376 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1377 data->src += data->src_pitch;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1378 data->dst += data->dst_pitch;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1379 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1380 return 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1381 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1382
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1383 int SDL_RenderCopy_BGR888_RGB888_Modulate_Blend_Scale(SDL_RenderCopyData *data)
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1384 {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1385 const int flags = data->flags;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1386 const Uint32 modulateR = data->r;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1387 const Uint32 modulateG = data->g;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1388 const Uint32 modulateB = data->b;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1389 const Uint32 modulateA = data->a;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1390 Uint32 srcpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1391 Uint32 srcR, srcG, srcB, srcA;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1392 Uint32 dstpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1393 Uint32 dstR, dstG, dstB, dstA;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1394 int srcy, srcx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1395 int posy, posx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1396 int incy, incx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1397
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1398 srcy = 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1399 posy = 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1400 incy = (data->src_h << 16) / data->dst_h;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1401 incx = (data->src_w << 16) / data->dst_w;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1402
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1403 while (data->dst_h--) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1404 Uint32 *src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1405 Uint32 dst = (Uint32 )data->dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1406 int n = data->dst_w;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1407 srcx = -1;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1408 posx = 0x10000L;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1409 while (posy >= 0x10000L) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1410 ++srcy;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1411 posy -= 0x10000L;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1412 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1413 while (n--) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1414 if (posx >= 0x10000L) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1415 while (posx >= 0x10000L) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1416 ++srcx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1417 posx -= 0x10000L;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1418 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1419 src = (Uint32 )(data->src + (srcy data->src_pitch) + (srcx * 4));
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1420 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1421 srcpixel = *src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1422 srcB = (Uint8)(srcpixel >> 16); srcG = (Uint8)(srcpixel >> 8); srcR = (Uint8)srcpixel; srcA = 0xFF;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1423 dstpixel = *dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1424 dstR = (Uint8)(dstpixel >> 16); dstG = (Uint8)(dstpixel >> 8); dstB = (Uint8)dstpixel; dstA = 0xFF;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1425 if (flags & SDL_RENDERCOPY_MODULATE_COLOR) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1426 srcR = (srcR * modulateR) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1427 srcG = (srcG * modulateG) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1428 srcB = (srcB * modulateB) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1429 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1430 if (flags & SDL_RENDERCOPY_MODULATE_ALPHA) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1431 srcA = (srcA * modulateA) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1432 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1433 if (flags & (SDL_RENDERCOPY_BLEND\|SDL_RENDERCOPY_ADD)) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1434 /* This goes away if we ever use premultiplied alpha */
1989 5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	1435 if (srcA < 255) {
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	1436 srcR = (srcR * srcA) / 255;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	1437 srcG = (srcG * srcA) / 255;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	1438 srcB = (srcB * srcA) / 255;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	1439 }
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	1440 }
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	1441 switch (flags & (SDL_RENDERCOPY_MASK\|SDL_RENDERCOPY_BLEND\|SDL_RENDERCOPY_ADD\|SDL_RENDERCOPY_MOD)) {
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	1442 case SDL_RENDERCOPY_MASK:
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	1443 if (srcA) {
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	1444 dstR = srcR;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	1445 dstG = srcG;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	1446 dstB = srcB;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	1447 }
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	1448 break;
1985 8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1449 case SDL_RENDERCOPY_BLEND:
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1450 dstR = srcR + ((255 - srcA) * dstR) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1451 dstG = srcG + ((255 - srcA) * dstG) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1452 dstB = srcB + ((255 - srcA) * dstB) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1453 break;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1454 case SDL_RENDERCOPY_ADD:
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1455 dstR = srcR + dstR; if (dstR > 255) dstR = 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1456 dstG = srcG + dstG; if (dstG > 255) dstG = 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1457 dstB = srcB + dstB; if (dstB > 255) dstB = 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1458 break;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1459 case SDL_RENDERCOPY_MOD:
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1460 dstR = (srcR * dstR) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1461 dstG = (srcG * dstG) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1462 dstB = (srcB * dstB) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1463 break;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1464 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1465 dstpixel = ((Uint32)dstR << 16) \| ((Uint32)dstG << 8) \| dstB;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1466 *dst = dstpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1467 posx += incx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1468 ++dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1469 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1470 posy += incy;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1471 data->dst += data->dst_pitch;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1472 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1473 return 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1474 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1475
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1476 int SDL_RenderCopy_BGR888_BGR888_Scale(SDL_RenderCopyData *data)
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1477 {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1478 const int flags = data->flags;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1479 int srcy, srcx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1480 int posy, posx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1481 int incy, incx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1482
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1483 srcy = 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1484 posy = 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1485 incy = (data->src_h << 16) / data->dst_h;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1486 incx = (data->src_w << 16) / data->dst_w;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1487
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1488 while (data->dst_h--) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1489 Uint32 *src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1490 Uint32 dst = (Uint32 )data->dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1491 int n = data->dst_w;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1492 srcx = -1;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1493 posx = 0x10000L;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1494 while (posy >= 0x10000L) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1495 ++srcy;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1496 posy -= 0x10000L;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1497 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1498 while (n--) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1499 if (posx >= 0x10000L) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1500 while (posx >= 0x10000L) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1501 ++srcx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1502 posx -= 0x10000L;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1503 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1504 src = (Uint32 )(data->src + (srcy data->src_pitch) + (srcx * 4));
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1505 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1506 dst = src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1507 posx += incx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1508 ++dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1509 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1510 posy += incy;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1511 data->dst += data->dst_pitch;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1512 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1513 return 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1514 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1515
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1516 int SDL_RenderCopy_BGR888_BGR888_Blend(SDL_RenderCopyData *data)
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1517 {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1518 const int flags = data->flags;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1519 Uint32 srcpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1520 Uint32 srcR, srcG, srcB, srcA;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1521 Uint32 dstpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1522 Uint32 dstR, dstG, dstB, dstA;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1523
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1524 while (data->dst_h--) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1525 Uint32 src = (Uint32 )data->src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1526 Uint32 dst = (Uint32 )data->dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1527 int n = data->dst_w;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1528 while (n--) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1529 srcpixel = *src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1530 srcB = (Uint8)(srcpixel >> 16); srcG = (Uint8)(srcpixel >> 8); srcR = (Uint8)srcpixel; srcA = 0xFF;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1531 dstpixel = *dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1532 dstB = (Uint8)(dstpixel >> 16); dstG = (Uint8)(dstpixel >> 8); dstR = (Uint8)dstpixel; dstA = 0xFF;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1533 if (flags & (SDL_RENDERCOPY_BLEND\|SDL_RENDERCOPY_ADD)) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1534 /* This goes away if we ever use premultiplied alpha */
1989 5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	1535 if (srcA < 255) {
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	1536 srcR = (srcR * srcA) / 255;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	1537 srcG = (srcG * srcA) / 255;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	1538 srcB = (srcB * srcA) / 255;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	1539 }
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	1540 }
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	1541 switch (flags & (SDL_RENDERCOPY_MASK\|SDL_RENDERCOPY_BLEND\|SDL_RENDERCOPY_ADD\|SDL_RENDERCOPY_MOD)) {
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	1542 case SDL_RENDERCOPY_MASK:
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	1543 if (srcA) {
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	1544 dstR = srcR;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	1545 dstG = srcG;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	1546 dstB = srcB;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	1547 }
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	1548 break;
1985 8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1549 case SDL_RENDERCOPY_BLEND:
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1550 dstR = srcR + ((255 - srcA) * dstR) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1551 dstG = srcG + ((255 - srcA) * dstG) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1552 dstB = srcB + ((255 - srcA) * dstB) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1553 break;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1554 case SDL_RENDERCOPY_ADD:
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1555 dstR = srcR + dstR; if (dstR > 255) dstR = 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1556 dstG = srcG + dstG; if (dstG > 255) dstG = 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1557 dstB = srcB + dstB; if (dstB > 255) dstB = 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1558 break;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1559 case SDL_RENDERCOPY_MOD:
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1560 dstR = (srcR * dstR) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1561 dstG = (srcG * dstG) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1562 dstB = (srcB * dstB) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1563 break;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1564 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1565 dstpixel = ((Uint32)dstB << 16) \| ((Uint32)dstG << 8) \| dstR;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1566 *dst = dstpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1567 ++src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1568 ++dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1569 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1570 data->src += data->src_pitch;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1571 data->dst += data->dst_pitch;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1572 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1573 return 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1574 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1575
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1576 int SDL_RenderCopy_BGR888_BGR888_Blend_Scale(SDL_RenderCopyData *data)
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1577 {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1578 const int flags = data->flags;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1579 Uint32 srcpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1580 Uint32 srcR, srcG, srcB, srcA;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1581 Uint32 dstpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1582 Uint32 dstR, dstG, dstB, dstA;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1583 int srcy, srcx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1584 int posy, posx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1585 int incy, incx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1586
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1587 srcy = 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1588 posy = 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1589 incy = (data->src_h << 16) / data->dst_h;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1590 incx = (data->src_w << 16) / data->dst_w;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1591
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1592 while (data->dst_h--) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1593 Uint32 *src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1594 Uint32 dst = (Uint32 )data->dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1595 int n = data->dst_w;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1596 srcx = -1;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1597 posx = 0x10000L;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1598 while (posy >= 0x10000L) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1599 ++srcy;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1600 posy -= 0x10000L;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1601 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1602 while (n--) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1603 if (posx >= 0x10000L) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1604 while (posx >= 0x10000L) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1605 ++srcx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1606 posx -= 0x10000L;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1607 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1608 src = (Uint32 )(data->src + (srcy data->src_pitch) + (srcx * 4));
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1609 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1610 srcpixel = *src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1611 srcB = (Uint8)(srcpixel >> 16); srcG = (Uint8)(srcpixel >> 8); srcR = (Uint8)srcpixel; srcA = 0xFF;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1612 dstpixel = *dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1613 dstB = (Uint8)(dstpixel >> 16); dstG = (Uint8)(dstpixel >> 8); dstR = (Uint8)dstpixel; dstA = 0xFF;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1614 if (flags & (SDL_RENDERCOPY_BLEND\|SDL_RENDERCOPY_ADD)) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1615 /* This goes away if we ever use premultiplied alpha */
1989 5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	1616 if (srcA < 255) {
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	1617 srcR = (srcR * srcA) / 255;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	1618 srcG = (srcG * srcA) / 255;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	1619 srcB = (srcB * srcA) / 255;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	1620 }
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	1621 }
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	1622 switch (flags & (SDL_RENDERCOPY_MASK\|SDL_RENDERCOPY_BLEND\|SDL_RENDERCOPY_ADD\|SDL_RENDERCOPY_MOD)) {
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	1623 case SDL_RENDERCOPY_MASK:
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	1624 if (srcA) {
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	1625 dstR = srcR;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	1626 dstG = srcG;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	1627 dstB = srcB;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	1628 }
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	1629 break;
1985 8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1630 case SDL_RENDERCOPY_BLEND:
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1631 dstR = srcR + ((255 - srcA) * dstR) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1632 dstG = srcG + ((255 - srcA) * dstG) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1633 dstB = srcB + ((255 - srcA) * dstB) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1634 break;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1635 case SDL_RENDERCOPY_ADD:
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1636 dstR = srcR + dstR; if (dstR > 255) dstR = 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1637 dstG = srcG + dstG; if (dstG > 255) dstG = 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1638 dstB = srcB + dstB; if (dstB > 255) dstB = 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1639 break;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1640 case SDL_RENDERCOPY_MOD:
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1641 dstR = (srcR * dstR) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1642 dstG = (srcG * dstG) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1643 dstB = (srcB * dstB) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1644 break;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1645 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1646 dstpixel = ((Uint32)dstB << 16) \| ((Uint32)dstG << 8) \| dstR;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1647 *dst = dstpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1648 posx += incx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1649 ++dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1650 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1651 posy += incy;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1652 data->dst += data->dst_pitch;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1653 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1654 return 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1655 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1656
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1657 int SDL_RenderCopy_BGR888_BGR888_Modulate(SDL_RenderCopyData *data)
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1658 {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1659 const int flags = data->flags;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1660 const Uint32 modulateR = data->r;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1661 const Uint32 modulateG = data->g;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1662 const Uint32 modulateB = data->b;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1663 const Uint32 modulateA = data->a;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1664 Uint32 pixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1665 Uint32 R, G, B, A;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1666
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1667 while (data->dst_h--) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1668 Uint32 src = (Uint32 )data->src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1669 Uint32 dst = (Uint32 )data->dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1670 int n = data->dst_w;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1671 while (n--) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1672 pixel = *src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1673 B = (Uint8)(pixel >> 16); G = (Uint8)(pixel >> 8); R = (Uint8)pixel; A = 0xFF;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1674 if (flags & SDL_RENDERCOPY_MODULATE_COLOR) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1675 R = (R * modulateR) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1676 G = (G * modulateG) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1677 B = (B * modulateB) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1678 }
1989 5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	1679 if (flags & SDL_RENDERCOPY_MODULATE_ALPHA) {
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	1680 A = (A * modulateA) / 255;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	1681 }
1985 8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1682 pixel = ((Uint32)B << 16) \| ((Uint32)G << 8) \| R;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1683 *dst = pixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1684 ++src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1685 ++dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1686 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1687 data->src += data->src_pitch;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1688 data->dst += data->dst_pitch;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1689 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1690 return 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1691 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1692
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1693 int SDL_RenderCopy_BGR888_BGR888_Modulate_Scale(SDL_RenderCopyData *data)
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1694 {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1695 const int flags = data->flags;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1696 const Uint32 modulateR = data->r;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1697 const Uint32 modulateG = data->g;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1698 const Uint32 modulateB = data->b;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1699 const Uint32 modulateA = data->a;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1700 Uint32 pixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1701 Uint32 R, G, B, A;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1702 int srcy, srcx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1703 int posy, posx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1704 int incy, incx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1705
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1706 srcy = 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1707 posy = 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1708 incy = (data->src_h << 16) / data->dst_h;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1709 incx = (data->src_w << 16) / data->dst_w;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1710
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1711 while (data->dst_h--) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1712 Uint32 *src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1713 Uint32 dst = (Uint32 )data->dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1714 int n = data->dst_w;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1715 srcx = -1;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1716 posx = 0x10000L;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1717 while (posy >= 0x10000L) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1718 ++srcy;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1719 posy -= 0x10000L;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1720 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1721 while (n--) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1722 if (posx >= 0x10000L) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1723 while (posx >= 0x10000L) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1724 ++srcx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1725 posx -= 0x10000L;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1726 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1727 src = (Uint32 )(data->src + (srcy data->src_pitch) + (srcx * 4));
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1728 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1729 pixel = *src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1730 B = (Uint8)(pixel >> 16); G = (Uint8)(pixel >> 8); R = (Uint8)pixel; A = 0xFF;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1731 if (flags & SDL_RENDERCOPY_MODULATE_COLOR) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1732 R = (R * modulateR) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1733 G = (G * modulateG) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1734 B = (B * modulateB) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1735 }
1989 5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	1736 if (flags & SDL_RENDERCOPY_MODULATE_ALPHA) {
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	1737 A = (A * modulateA) / 255;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	1738 }
1985 8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1739 pixel = ((Uint32)B << 16) \| ((Uint32)G << 8) \| R;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1740 *dst = pixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1741 posx += incx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1742 ++dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1743 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1744 posy += incy;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1745 data->dst += data->dst_pitch;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1746 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1747 return 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1748 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1749
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1750 int SDL_RenderCopy_BGR888_BGR888_Modulate_Blend(SDL_RenderCopyData *data)
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1751 {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1752 const int flags = data->flags;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1753 const Uint32 modulateR = data->r;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1754 const Uint32 modulateG = data->g;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1755 const Uint32 modulateB = data->b;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1756 const Uint32 modulateA = data->a;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1757 Uint32 srcpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1758 Uint32 srcR, srcG, srcB, srcA;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1759 Uint32 dstpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1760 Uint32 dstR, dstG, dstB, dstA;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1761
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1762 while (data->dst_h--) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1763 Uint32 src = (Uint32 )data->src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1764 Uint32 dst = (Uint32 )data->dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1765 int n = data->dst_w;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1766 while (n--) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1767 srcpixel = *src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1768 srcB = (Uint8)(srcpixel >> 16); srcG = (Uint8)(srcpixel >> 8); srcR = (Uint8)srcpixel; srcA = 0xFF;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1769 dstpixel = *dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1770 dstB = (Uint8)(dstpixel >> 16); dstG = (Uint8)(dstpixel >> 8); dstR = (Uint8)dstpixel; dstA = 0xFF;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1771 if (flags & SDL_RENDERCOPY_MODULATE_COLOR) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1772 srcR = (srcR * modulateR) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1773 srcG = (srcG * modulateG) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1774 srcB = (srcB * modulateB) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1775 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1776 if (flags & SDL_RENDERCOPY_MODULATE_ALPHA) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1777 srcA = (srcA * modulateA) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1778 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1779 if (flags & (SDL_RENDERCOPY_BLEND\|SDL_RENDERCOPY_ADD)) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1780 /* This goes away if we ever use premultiplied alpha */
1989 5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	1781 if (srcA < 255) {
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	1782 srcR = (srcR * srcA) / 255;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	1783 srcG = (srcG * srcA) / 255;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	1784 srcB = (srcB * srcA) / 255;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	1785 }
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	1786 }
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	1787 switch (flags & (SDL_RENDERCOPY_MASK\|SDL_RENDERCOPY_BLEND\|SDL_RENDERCOPY_ADD\|SDL_RENDERCOPY_MOD)) {
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	1788 case SDL_RENDERCOPY_MASK:
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	1789 if (srcA) {
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	1790 dstR = srcR;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	1791 dstG = srcG;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	1792 dstB = srcB;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	1793 }
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	1794 break;
1985 8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1795 case SDL_RENDERCOPY_BLEND:
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1796 dstR = srcR + ((255 - srcA) * dstR) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1797 dstG = srcG + ((255 - srcA) * dstG) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1798 dstB = srcB + ((255 - srcA) * dstB) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1799 break;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1800 case SDL_RENDERCOPY_ADD:
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1801 dstR = srcR + dstR; if (dstR > 255) dstR = 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1802 dstG = srcG + dstG; if (dstG > 255) dstG = 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1803 dstB = srcB + dstB; if (dstB > 255) dstB = 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1804 break;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1805 case SDL_RENDERCOPY_MOD:
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1806 dstR = (srcR * dstR) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1807 dstG = (srcG * dstG) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1808 dstB = (srcB * dstB) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1809 break;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1810 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1811 dstpixel = ((Uint32)dstB << 16) \| ((Uint32)dstG << 8) \| dstR;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1812 *dst = dstpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1813 ++src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1814 ++dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1815 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1816 data->src += data->src_pitch;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1817 data->dst += data->dst_pitch;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1818 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1819 return 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1820 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1821
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1822 int SDL_RenderCopy_BGR888_BGR888_Modulate_Blend_Scale(SDL_RenderCopyData *data)
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1823 {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1824 const int flags = data->flags;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1825 const Uint32 modulateR = data->r;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1826 const Uint32 modulateG = data->g;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1827 const Uint32 modulateB = data->b;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1828 const Uint32 modulateA = data->a;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1829 Uint32 srcpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1830 Uint32 srcR, srcG, srcB, srcA;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1831 Uint32 dstpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1832 Uint32 dstR, dstG, dstB, dstA;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1833 int srcy, srcx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1834 int posy, posx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1835 int incy, incx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1836
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1837 srcy = 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1838 posy = 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1839 incy = (data->src_h << 16) / data->dst_h;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1840 incx = (data->src_w << 16) / data->dst_w;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1841
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1842 while (data->dst_h--) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1843 Uint32 *src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1844 Uint32 dst = (Uint32 )data->dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1845 int n = data->dst_w;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1846 srcx = -1;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1847 posx = 0x10000L;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1848 while (posy >= 0x10000L) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1849 ++srcy;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1850 posy -= 0x10000L;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1851 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1852 while (n--) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1853 if (posx >= 0x10000L) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1854 while (posx >= 0x10000L) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1855 ++srcx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1856 posx -= 0x10000L;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1857 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1858 src = (Uint32 )(data->src + (srcy data->src_pitch) + (srcx * 4));
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1859 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1860 srcpixel = *src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1861 srcB = (Uint8)(srcpixel >> 16); srcG = (Uint8)(srcpixel >> 8); srcR = (Uint8)srcpixel; srcA = 0xFF;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1862 dstpixel = *dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1863 dstB = (Uint8)(dstpixel >> 16); dstG = (Uint8)(dstpixel >> 8); dstR = (Uint8)dstpixel; dstA = 0xFF;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1864 if (flags & SDL_RENDERCOPY_MODULATE_COLOR) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1865 srcR = (srcR * modulateR) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1866 srcG = (srcG * modulateG) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1867 srcB = (srcB * modulateB) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1868 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1869 if (flags & SDL_RENDERCOPY_MODULATE_ALPHA) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1870 srcA = (srcA * modulateA) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1871 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1872 if (flags & (SDL_RENDERCOPY_BLEND\|SDL_RENDERCOPY_ADD)) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1873 /* This goes away if we ever use premultiplied alpha */
1989 5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	1874 if (srcA < 255) {
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	1875 srcR = (srcR * srcA) / 255;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	1876 srcG = (srcG * srcA) / 255;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	1877 srcB = (srcB * srcA) / 255;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	1878 }
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	1879 }
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	1880 switch (flags & (SDL_RENDERCOPY_MASK\|SDL_RENDERCOPY_BLEND\|SDL_RENDERCOPY_ADD\|SDL_RENDERCOPY_MOD)) {
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	1881 case SDL_RENDERCOPY_MASK:
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	1882 if (srcA) {
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	1883 dstR = srcR;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	1884 dstG = srcG;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	1885 dstB = srcB;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	1886 }
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	1887 break;
1985 8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1888 case SDL_RENDERCOPY_BLEND:
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1889 dstR = srcR + ((255 - srcA) * dstR) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1890 dstG = srcG + ((255 - srcA) * dstG) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1891 dstB = srcB + ((255 - srcA) * dstB) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1892 break;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1893 case SDL_RENDERCOPY_ADD:
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1894 dstR = srcR + dstR; if (dstR > 255) dstR = 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1895 dstG = srcG + dstG; if (dstG > 255) dstG = 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1896 dstB = srcB + dstB; if (dstB > 255) dstB = 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1897 break;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1898 case SDL_RENDERCOPY_MOD:
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1899 dstR = (srcR * dstR) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1900 dstG = (srcG * dstG) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1901 dstB = (srcB * dstB) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1902 break;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1903 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1904 dstpixel = ((Uint32)dstB << 16) \| ((Uint32)dstG << 8) \| dstR;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1905 *dst = dstpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1906 posx += incx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1907 ++dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1908 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1909 posy += incy;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1910 data->dst += data->dst_pitch;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1911 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1912 return 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1913 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1914
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1915 int SDL_RenderCopy_ARGB8888_RGB888_Scale(SDL_RenderCopyData *data)
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1916 {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1917 const int flags = data->flags;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1918 Uint32 pixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1919 Uint32 R, G, B, A;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1920 int srcy, srcx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1921 int posy, posx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1922 int incy, incx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1923
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1924 srcy = 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1925 posy = 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1926 incy = (data->src_h << 16) / data->dst_h;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1927 incx = (data->src_w << 16) / data->dst_w;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1928
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1929 while (data->dst_h--) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1930 Uint32 *src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1931 Uint32 dst = (Uint32 )data->dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1932 int n = data->dst_w;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1933 srcx = -1;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1934 posx = 0x10000L;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1935 while (posy >= 0x10000L) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1936 ++srcy;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1937 posy -= 0x10000L;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1938 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1939 while (n--) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1940 if (posx >= 0x10000L) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1941 while (posx >= 0x10000L) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1942 ++srcx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1943 posx -= 0x10000L;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1944 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1945 src = (Uint32 )(data->src + (srcy data->src_pitch) + (srcx * 4));
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1946 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1947 pixel = *src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1948 A = (Uint8)(pixel >> 24); R = (Uint8)(pixel >> 16); G = (Uint8)(pixel >> 8); B = (Uint8)pixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1949 pixel = ((Uint32)R << 16) \| ((Uint32)G << 8) \| B;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1950 *dst = pixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1951 posx += incx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1952 ++dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1953 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1954 posy += incy;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1955 data->dst += data->dst_pitch;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1956 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1957 return 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1958 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1959
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1960 int SDL_RenderCopy_ARGB8888_RGB888_Blend(SDL_RenderCopyData *data)
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1961 {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1962 const int flags = data->flags;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1963 Uint32 srcpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1964 Uint32 srcR, srcG, srcB, srcA;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1965 Uint32 dstpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1966 Uint32 dstR, dstG, dstB, dstA;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1967
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1968 while (data->dst_h--) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1969 Uint32 src = (Uint32 )data->src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1970 Uint32 dst = (Uint32 )data->dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1971 int n = data->dst_w;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1972 while (n--) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1973 srcpixel = *src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1974 srcA = (Uint8)(srcpixel >> 24); srcR = (Uint8)(srcpixel >> 16); srcG = (Uint8)(srcpixel >> 8); srcB = (Uint8)srcpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1975 dstpixel = *dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1976 dstR = (Uint8)(dstpixel >> 16); dstG = (Uint8)(dstpixel >> 8); dstB = (Uint8)dstpixel; dstA = 0xFF;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1977 if (flags & (SDL_RENDERCOPY_BLEND\|SDL_RENDERCOPY_ADD)) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1978 /* This goes away if we ever use premultiplied alpha */
1989 5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	1979 if (srcA < 255) {
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	1980 srcR = (srcR * srcA) / 255;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	1981 srcG = (srcG * srcA) / 255;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	1982 srcB = (srcB * srcA) / 255;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	1983 }
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	1984 }
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	1985 switch (flags & (SDL_RENDERCOPY_MASK\|SDL_RENDERCOPY_BLEND\|SDL_RENDERCOPY_ADD\|SDL_RENDERCOPY_MOD)) {
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	1986 case SDL_RENDERCOPY_MASK:
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	1987 if (srcA) {
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	1988 dstR = srcR;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	1989 dstG = srcG;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	1990 dstB = srcB;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	1991 }
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	1992 break;
1985 8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1993 case SDL_RENDERCOPY_BLEND:
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1994 dstR = srcR + ((255 - srcA) * dstR) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1995 dstG = srcG + ((255 - srcA) * dstG) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1996 dstB = srcB + ((255 - srcA) * dstB) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1997 break;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1998 case SDL_RENDERCOPY_ADD:
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1999 dstR = srcR + dstR; if (dstR > 255) dstR = 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2000 dstG = srcG + dstG; if (dstG > 255) dstG = 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2001 dstB = srcB + dstB; if (dstB > 255) dstB = 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2002 break;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2003 case SDL_RENDERCOPY_MOD:
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2004 dstR = (srcR * dstR) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2005 dstG = (srcG * dstG) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2006 dstB = (srcB * dstB) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2007 break;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2008 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2009 dstpixel = ((Uint32)dstR << 16) \| ((Uint32)dstG << 8) \| dstB;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2010 *dst = dstpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2011 ++src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2012 ++dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2013 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2014 data->src += data->src_pitch;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2015 data->dst += data->dst_pitch;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2016 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2017 return 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2018 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2019
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2020 int SDL_RenderCopy_ARGB8888_RGB888_Blend_Scale(SDL_RenderCopyData *data)
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2021 {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2022 const int flags = data->flags;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2023 Uint32 srcpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2024 Uint32 srcR, srcG, srcB, srcA;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2025 Uint32 dstpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2026 Uint32 dstR, dstG, dstB, dstA;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2027 int srcy, srcx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2028 int posy, posx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2029 int incy, incx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2030
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2031 srcy = 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2032 posy = 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2033 incy = (data->src_h << 16) / data->dst_h;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2034 incx = (data->src_w << 16) / data->dst_w;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2035
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2036 while (data->dst_h--) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2037 Uint32 *src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2038 Uint32 dst = (Uint32 )data->dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2039 int n = data->dst_w;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2040 srcx = -1;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2041 posx = 0x10000L;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2042 while (posy >= 0x10000L) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2043 ++srcy;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2044 posy -= 0x10000L;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2045 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2046 while (n--) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2047 if (posx >= 0x10000L) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2048 while (posx >= 0x10000L) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2049 ++srcx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2050 posx -= 0x10000L;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2051 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2052 src = (Uint32 )(data->src + (srcy data->src_pitch) + (srcx * 4));
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2053 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2054 srcpixel = *src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2055 srcA = (Uint8)(srcpixel >> 24); srcR = (Uint8)(srcpixel >> 16); srcG = (Uint8)(srcpixel >> 8); srcB = (Uint8)srcpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2056 dstpixel = *dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2057 dstR = (Uint8)(dstpixel >> 16); dstG = (Uint8)(dstpixel >> 8); dstB = (Uint8)dstpixel; dstA = 0xFF;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2058 if (flags & (SDL_RENDERCOPY_BLEND\|SDL_RENDERCOPY_ADD)) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2059 /* This goes away if we ever use premultiplied alpha */
1989 5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	2060 if (srcA < 255) {
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	2061 srcR = (srcR * srcA) / 255;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	2062 srcG = (srcG * srcA) / 255;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	2063 srcB = (srcB * srcA) / 255;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	2064 }
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	2065 }
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	2066 switch (flags & (SDL_RENDERCOPY_MASK\|SDL_RENDERCOPY_BLEND\|SDL_RENDERCOPY_ADD\|SDL_RENDERCOPY_MOD)) {
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	2067 case SDL_RENDERCOPY_MASK:
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	2068 if (srcA) {
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	2069 dstR = srcR;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	2070 dstG = srcG;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	2071 dstB = srcB;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	2072 }
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	2073 break;
1985 8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2074 case SDL_RENDERCOPY_BLEND:
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2075 dstR = srcR + ((255 - srcA) * dstR) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2076 dstG = srcG + ((255 - srcA) * dstG) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2077 dstB = srcB + ((255 - srcA) * dstB) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2078 break;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2079 case SDL_RENDERCOPY_ADD:
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2080 dstR = srcR + dstR; if (dstR > 255) dstR = 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2081 dstG = srcG + dstG; if (dstG > 255) dstG = 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2082 dstB = srcB + dstB; if (dstB > 255) dstB = 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2083 break;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2084 case SDL_RENDERCOPY_MOD:
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2085 dstR = (srcR * dstR) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2086 dstG = (srcG * dstG) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2087 dstB = (srcB * dstB) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2088 break;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2089 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2090 dstpixel = ((Uint32)dstR << 16) \| ((Uint32)dstG << 8) \| dstB;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2091 *dst = dstpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2092 posx += incx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2093 ++dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2094 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2095 posy += incy;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2096 data->dst += data->dst_pitch;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2097 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2098 return 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2099 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2100
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2101 int SDL_RenderCopy_ARGB8888_RGB888_Modulate(SDL_RenderCopyData *data)
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2102 {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2103 const int flags = data->flags;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2104 const Uint32 modulateR = data->r;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2105 const Uint32 modulateG = data->g;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2106 const Uint32 modulateB = data->b;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2107 const Uint32 modulateA = data->a;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2108 Uint32 pixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2109 Uint32 R, G, B, A;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2110
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2111 while (data->dst_h--) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2112 Uint32 src = (Uint32 )data->src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2113 Uint32 dst = (Uint32 )data->dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2114 int n = data->dst_w;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2115 while (n--) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2116 pixel = *src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2117 A = (Uint8)(pixel >> 24); R = (Uint8)(pixel >> 16); G = (Uint8)(pixel >> 8); B = (Uint8)pixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2118 if (flags & SDL_RENDERCOPY_MODULATE_COLOR) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2119 R = (R * modulateR) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2120 G = (G * modulateG) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2121 B = (B * modulateB) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2122 }
1989 5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	2123 if (flags & SDL_RENDERCOPY_MODULATE_ALPHA) {
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	2124 A = (A * modulateA) / 255;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	2125 }
1985 8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2126 pixel = ((Uint32)R << 16) \| ((Uint32)G << 8) \| B;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2127 *dst = pixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2128 ++src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2129 ++dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2130 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2131 data->src += data->src_pitch;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2132 data->dst += data->dst_pitch;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2133 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2134 return 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2135 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2136
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2137 int SDL_RenderCopy_ARGB8888_RGB888_Modulate_Scale(SDL_RenderCopyData *data)
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2138 {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2139 const int flags = data->flags;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2140 const Uint32 modulateR = data->r;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2141 const Uint32 modulateG = data->g;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2142 const Uint32 modulateB = data->b;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2143 const Uint32 modulateA = data->a;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2144 Uint32 pixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2145 Uint32 R, G, B, A;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2146 int srcy, srcx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2147 int posy, posx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2148 int incy, incx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2149
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2150 srcy = 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2151 posy = 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2152 incy = (data->src_h << 16) / data->dst_h;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2153 incx = (data->src_w << 16) / data->dst_w;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2154
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2155 while (data->dst_h--) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2156 Uint32 *src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2157 Uint32 dst = (Uint32 )data->dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2158 int n = data->dst_w;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2159 srcx = -1;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2160 posx = 0x10000L;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2161 while (posy >= 0x10000L) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2162 ++srcy;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2163 posy -= 0x10000L;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2164 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2165 while (n--) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2166 if (posx >= 0x10000L) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2167 while (posx >= 0x10000L) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2168 ++srcx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2169 posx -= 0x10000L;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2170 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2171 src = (Uint32 )(data->src + (srcy data->src_pitch) + (srcx * 4));
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2172 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2173 pixel = *src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2174 A = (Uint8)(pixel >> 24); R = (Uint8)(pixel >> 16); G = (Uint8)(pixel >> 8); B = (Uint8)pixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2175 if (flags & SDL_RENDERCOPY_MODULATE_COLOR) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2176 R = (R * modulateR) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2177 G = (G * modulateG) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2178 B = (B * modulateB) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2179 }
1989 5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	2180 if (flags & SDL_RENDERCOPY_MODULATE_ALPHA) {
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	2181 A = (A * modulateA) / 255;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	2182 }
1985 8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2183 pixel = ((Uint32)R << 16) \| ((Uint32)G << 8) \| B;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2184 *dst = pixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2185 posx += incx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2186 ++dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2187 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2188 posy += incy;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2189 data->dst += data->dst_pitch;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2190 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2191 return 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2192 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2193
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2194 int SDL_RenderCopy_ARGB8888_RGB888_Modulate_Blend(SDL_RenderCopyData *data)
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2195 {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2196 const int flags = data->flags;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2197 const Uint32 modulateR = data->r;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2198 const Uint32 modulateG = data->g;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2199 const Uint32 modulateB = data->b;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2200 const Uint32 modulateA = data->a;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2201 Uint32 srcpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2202 Uint32 srcR, srcG, srcB, srcA;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2203 Uint32 dstpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2204 Uint32 dstR, dstG, dstB, dstA;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2205
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2206 while (data->dst_h--) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2207 Uint32 src = (Uint32 )data->src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2208 Uint32 dst = (Uint32 )data->dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2209 int n = data->dst_w;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2210 while (n--) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2211 srcpixel = *src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2212 srcA = (Uint8)(srcpixel >> 24); srcR = (Uint8)(srcpixel >> 16); srcG = (Uint8)(srcpixel >> 8); srcB = (Uint8)srcpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2213 dstpixel = *dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2214 dstR = (Uint8)(dstpixel >> 16); dstG = (Uint8)(dstpixel >> 8); dstB = (Uint8)dstpixel; dstA = 0xFF;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2215 if (flags & SDL_RENDERCOPY_MODULATE_COLOR) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2216 srcR = (srcR * modulateR) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2217 srcG = (srcG * modulateG) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2218 srcB = (srcB * modulateB) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2219 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2220 if (flags & SDL_RENDERCOPY_MODULATE_ALPHA) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2221 srcA = (srcA * modulateA) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2222 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2223 if (flags & (SDL_RENDERCOPY_BLEND\|SDL_RENDERCOPY_ADD)) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2224 /* This goes away if we ever use premultiplied alpha */
1989 5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	2225 if (srcA < 255) {
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	2226 srcR = (srcR * srcA) / 255;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	2227 srcG = (srcG * srcA) / 255;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	2228 srcB = (srcB * srcA) / 255;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	2229 }
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	2230 }
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	2231 switch (flags & (SDL_RENDERCOPY_MASK\|SDL_RENDERCOPY_BLEND\|SDL_RENDERCOPY_ADD\|SDL_RENDERCOPY_MOD)) {
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	2232 case SDL_RENDERCOPY_MASK:
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	2233 if (srcA) {
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	2234 dstR = srcR;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	2235 dstG = srcG;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	2236 dstB = srcB;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	2237 }
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	2238 break;
1985 8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2239 case SDL_RENDERCOPY_BLEND:
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2240 dstR = srcR + ((255 - srcA) * dstR) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2241 dstG = srcG + ((255 - srcA) * dstG) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2242 dstB = srcB + ((255 - srcA) * dstB) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2243 break;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2244 case SDL_RENDERCOPY_ADD:
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2245 dstR = srcR + dstR; if (dstR > 255) dstR = 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2246 dstG = srcG + dstG; if (dstG > 255) dstG = 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2247 dstB = srcB + dstB; if (dstB > 255) dstB = 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2248 break;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2249 case SDL_RENDERCOPY_MOD:
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2250 dstR = (srcR * dstR) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2251 dstG = (srcG * dstG) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2252 dstB = (srcB * dstB) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2253 break;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2254 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2255 dstpixel = ((Uint32)dstR << 16) \| ((Uint32)dstG << 8) \| dstB;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2256 *dst = dstpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2257 ++src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2258 ++dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2259 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2260 data->src += data->src_pitch;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2261 data->dst += data->dst_pitch;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2262 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2263 return 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2264 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2265
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2266 int SDL_RenderCopy_ARGB8888_RGB888_Modulate_Blend_Scale(SDL_RenderCopyData *data)
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2267 {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2268 const int flags = data->flags;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2269 const Uint32 modulateR = data->r;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2270 const Uint32 modulateG = data->g;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2271 const Uint32 modulateB = data->b;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2272 const Uint32 modulateA = data->a;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2273 Uint32 srcpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2274 Uint32 srcR, srcG, srcB, srcA;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2275 Uint32 dstpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2276 Uint32 dstR, dstG, dstB, dstA;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2277 int srcy, srcx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2278 int posy, posx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2279 int incy, incx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2280
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2281 srcy = 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2282 posy = 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2283 incy = (data->src_h << 16) / data->dst_h;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2284 incx = (data->src_w << 16) / data->dst_w;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2285
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2286 while (data->dst_h--) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2287 Uint32 *src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2288 Uint32 dst = (Uint32 )data->dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2289 int n = data->dst_w;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2290 srcx = -1;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2291 posx = 0x10000L;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2292 while (posy >= 0x10000L) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2293 ++srcy;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2294 posy -= 0x10000L;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2295 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2296 while (n--) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2297 if (posx >= 0x10000L) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2298 while (posx >= 0x10000L) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2299 ++srcx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2300 posx -= 0x10000L;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2301 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2302 src = (Uint32 )(data->src + (srcy data->src_pitch) + (srcx * 4));
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2303 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2304 srcpixel = *src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2305 srcA = (Uint8)(srcpixel >> 24); srcR = (Uint8)(srcpixel >> 16); srcG = (Uint8)(srcpixel >> 8); srcB = (Uint8)srcpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2306 dstpixel = *dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2307 dstR = (Uint8)(dstpixel >> 16); dstG = (Uint8)(dstpixel >> 8); dstB = (Uint8)dstpixel; dstA = 0xFF;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2308 if (flags & SDL_RENDERCOPY_MODULATE_COLOR) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2309 srcR = (srcR * modulateR) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2310 srcG = (srcG * modulateG) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2311 srcB = (srcB * modulateB) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2312 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2313 if (flags & SDL_RENDERCOPY_MODULATE_ALPHA) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2314 srcA = (srcA * modulateA) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2315 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2316 if (flags & (SDL_RENDERCOPY_BLEND\|SDL_RENDERCOPY_ADD)) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2317 /* This goes away if we ever use premultiplied alpha */
1989 5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	2318 if (srcA < 255) {
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	2319 srcR = (srcR * srcA) / 255;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	2320 srcG = (srcG * srcA) / 255;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	2321 srcB = (srcB * srcA) / 255;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	2322 }
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	2323 }
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	2324 switch (flags & (SDL_RENDERCOPY_MASK\|SDL_RENDERCOPY_BLEND\|SDL_RENDERCOPY_ADD\|SDL_RENDERCOPY_MOD)) {
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	2325 case SDL_RENDERCOPY_MASK:
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	2326 if (srcA) {
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	2327 dstR = srcR;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	2328 dstG = srcG;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	2329 dstB = srcB;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	2330 }
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	2331 break;
1985 8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2332 case SDL_RENDERCOPY_BLEND:
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2333 dstR = srcR + ((255 - srcA) * dstR) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2334 dstG = srcG + ((255 - srcA) * dstG) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2335 dstB = srcB + ((255 - srcA) * dstB) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2336 break;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2337 case SDL_RENDERCOPY_ADD:
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2338 dstR = srcR + dstR; if (dstR > 255) dstR = 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2339 dstG = srcG + dstG; if (dstG > 255) dstG = 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2340 dstB = srcB + dstB; if (dstB > 255) dstB = 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2341 break;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2342 case SDL_RENDERCOPY_MOD:
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2343 dstR = (srcR * dstR) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2344 dstG = (srcG * dstG) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2345 dstB = (srcB * dstB) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2346 break;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2347 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2348 dstpixel = ((Uint32)dstR << 16) \| ((Uint32)dstG << 8) \| dstB;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2349 *dst = dstpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2350 posx += incx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2351 ++dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2352 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2353 posy += incy;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2354 data->dst += data->dst_pitch;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2355 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2356 return 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2357 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2358
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2359 int SDL_RenderCopy_ARGB8888_BGR888_Scale(SDL_RenderCopyData *data)
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2360 {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2361 const int flags = data->flags;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2362 Uint32 pixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2363 Uint32 R, G, B, A;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2364 int srcy, srcx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2365 int posy, posx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2366 int incy, incx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2367
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2368 srcy = 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2369 posy = 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2370 incy = (data->src_h << 16) / data->dst_h;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2371 incx = (data->src_w << 16) / data->dst_w;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2372
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2373 while (data->dst_h--) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2374 Uint32 *src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2375 Uint32 dst = (Uint32 )data->dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2376 int n = data->dst_w;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2377 srcx = -1;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2378 posx = 0x10000L;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2379 while (posy >= 0x10000L) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2380 ++srcy;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2381 posy -= 0x10000L;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2382 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2383 while (n--) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2384 if (posx >= 0x10000L) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2385 while (posx >= 0x10000L) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2386 ++srcx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2387 posx -= 0x10000L;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2388 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2389 src = (Uint32 )(data->src + (srcy data->src_pitch) + (srcx * 4));
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2390 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2391 pixel = *src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2392 A = (Uint8)(pixel >> 24); R = (Uint8)(pixel >> 16); G = (Uint8)(pixel >> 8); B = (Uint8)pixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2393 pixel = ((Uint32)B << 16) \| ((Uint32)G << 8) \| R;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2394 *dst = pixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2395 posx += incx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2396 ++dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2397 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2398 posy += incy;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2399 data->dst += data->dst_pitch;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2400 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2401 return 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2402 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2403
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2404 int SDL_RenderCopy_ARGB8888_BGR888_Blend(SDL_RenderCopyData *data)
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2405 {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2406 const int flags = data->flags;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2407 Uint32 srcpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2408 Uint32 srcR, srcG, srcB, srcA;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2409 Uint32 dstpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2410 Uint32 dstR, dstG, dstB, dstA;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2411
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2412 while (data->dst_h--) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2413 Uint32 src = (Uint32 )data->src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2414 Uint32 dst = (Uint32 )data->dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2415 int n = data->dst_w;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2416 while (n--) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2417 srcpixel = *src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2418 srcA = (Uint8)(srcpixel >> 24); srcR = (Uint8)(srcpixel >> 16); srcG = (Uint8)(srcpixel >> 8); srcB = (Uint8)srcpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2419 dstpixel = *dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2420 dstB = (Uint8)(dstpixel >> 16); dstG = (Uint8)(dstpixel >> 8); dstR = (Uint8)dstpixel; dstA = 0xFF;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2421 if (flags & (SDL_RENDERCOPY_BLEND\|SDL_RENDERCOPY_ADD)) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2422 /* This goes away if we ever use premultiplied alpha */
1989 5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	2423 if (srcA < 255) {
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	2424 srcR = (srcR * srcA) / 255;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	2425 srcG = (srcG * srcA) / 255;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	2426 srcB = (srcB * srcA) / 255;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	2427 }
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	2428 }
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	2429 switch (flags & (SDL_RENDERCOPY_MASK\|SDL_RENDERCOPY_BLEND\|SDL_RENDERCOPY_ADD\|SDL_RENDERCOPY_MOD)) {
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	2430 case SDL_RENDERCOPY_MASK:
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	2431 if (srcA) {
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	2432 dstR = srcR;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	2433 dstG = srcG;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	2434 dstB = srcB;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	2435 }
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	2436 break;
1985 8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2437 case SDL_RENDERCOPY_BLEND:
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2438 dstR = srcR + ((255 - srcA) * dstR) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2439 dstG = srcG + ((255 - srcA) * dstG) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2440 dstB = srcB + ((255 - srcA) * dstB) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2441 break;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2442 case SDL_RENDERCOPY_ADD:
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2443 dstR = srcR + dstR; if (dstR > 255) dstR = 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2444 dstG = srcG + dstG; if (dstG > 255) dstG = 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2445 dstB = srcB + dstB; if (dstB > 255) dstB = 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2446 break;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2447 case SDL_RENDERCOPY_MOD:
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2448 dstR = (srcR * dstR) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2449 dstG = (srcG * dstG) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2450 dstB = (srcB * dstB) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2451 break;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2452 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2453 dstpixel = ((Uint32)dstB << 16) \| ((Uint32)dstG << 8) \| dstR;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2454 *dst = dstpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2455 ++src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2456 ++dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2457 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2458 data->src += data->src_pitch;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2459 data->dst += data->dst_pitch;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2460 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2461 return 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2462 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2463
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2464 int SDL_RenderCopy_ARGB8888_BGR888_Blend_Scale(SDL_RenderCopyData *data)
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2465 {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2466 const int flags = data->flags;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2467 Uint32 srcpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2468 Uint32 srcR, srcG, srcB, srcA;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2469 Uint32 dstpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2470 Uint32 dstR, dstG, dstB, dstA;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2471 int srcy, srcx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2472 int posy, posx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2473 int incy, incx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2474
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2475 srcy = 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2476 posy = 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2477 incy = (data->src_h << 16) / data->dst_h;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2478 incx = (data->src_w << 16) / data->dst_w;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2479
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2480 while (data->dst_h--) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2481 Uint32 *src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2482 Uint32 dst = (Uint32 )data->dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2483 int n = data->dst_w;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2484 srcx = -1;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2485 posx = 0x10000L;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2486 while (posy >= 0x10000L) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2487 ++srcy;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2488 posy -= 0x10000L;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2489 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2490 while (n--) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2491 if (posx >= 0x10000L) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2492 while (posx >= 0x10000L) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2493 ++srcx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2494 posx -= 0x10000L;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2495 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2496 src = (Uint32 )(data->src + (srcy data->src_pitch) + (srcx * 4));
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2497 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2498 srcpixel = *src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2499 srcA = (Uint8)(srcpixel >> 24); srcR = (Uint8)(srcpixel >> 16); srcG = (Uint8)(srcpixel >> 8); srcB = (Uint8)srcpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2500 dstpixel = *dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2501 dstB = (Uint8)(dstpixel >> 16); dstG = (Uint8)(dstpixel >> 8); dstR = (Uint8)dstpixel; dstA = 0xFF;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2502 if (flags & (SDL_RENDERCOPY_BLEND\|SDL_RENDERCOPY_ADD)) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2503 /* This goes away if we ever use premultiplied alpha */
1989 5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	2504 if (srcA < 255) {
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	2505 srcR = (srcR * srcA) / 255;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	2506 srcG = (srcG * srcA) / 255;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	2507 srcB = (srcB * srcA) / 255;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	2508 }
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	2509 }
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	2510 switch (flags & (SDL_RENDERCOPY_MASK\|SDL_RENDERCOPY_BLEND\|SDL_RENDERCOPY_ADD\|SDL_RENDERCOPY_MOD)) {
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	2511 case SDL_RENDERCOPY_MASK:
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	2512 if (srcA) {
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	2513 dstR = srcR;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	2514 dstG = srcG;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	2515 dstB = srcB;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	2516 }
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	2517 break;
1985 8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2518 case SDL_RENDERCOPY_BLEND:
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2519 dstR = srcR + ((255 - srcA) * dstR) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2520 dstG = srcG + ((255 - srcA) * dstG) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2521 dstB = srcB + ((255 - srcA) * dstB) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2522 break;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2523 case SDL_RENDERCOPY_ADD:
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2524 dstR = srcR + dstR; if (dstR > 255) dstR = 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2525 dstG = srcG + dstG; if (dstG > 255) dstG = 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2526 dstB = srcB + dstB; if (dstB > 255) dstB = 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2527 break;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2528 case SDL_RENDERCOPY_MOD:
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2529 dstR = (srcR * dstR) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2530 dstG = (srcG * dstG) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2531 dstB = (srcB * dstB) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2532 break;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2533 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2534 dstpixel = ((Uint32)dstB << 16) \| ((Uint32)dstG << 8) \| dstR;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2535 *dst = dstpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2536 posx += incx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2537 ++dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2538 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2539 posy += incy;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2540 data->dst += data->dst_pitch;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2541 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2542 return 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2543 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2544
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2545 int SDL_RenderCopy_ARGB8888_BGR888_Modulate(SDL_RenderCopyData *data)
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2546 {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2547 const int flags = data->flags;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2548 const Uint32 modulateR = data->r;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2549 const Uint32 modulateG = data->g;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2550 const Uint32 modulateB = data->b;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2551 const Uint32 modulateA = data->a;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2552 Uint32 pixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2553 Uint32 R, G, B, A;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2554
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2555 while (data->dst_h--) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2556 Uint32 src = (Uint32 )data->src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2557 Uint32 dst = (Uint32 )data->dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2558 int n = data->dst_w;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2559 while (n--) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2560 pixel = *src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2561 A = (Uint8)(pixel >> 24); R = (Uint8)(pixel >> 16); G = (Uint8)(pixel >> 8); B = (Uint8)pixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2562 if (flags & SDL_RENDERCOPY_MODULATE_COLOR) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2563 R = (R * modulateR) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2564 G = (G * modulateG) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2565 B = (B * modulateB) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2566 }
1989 5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	2567 if (flags & SDL_RENDERCOPY_MODULATE_ALPHA) {
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	2568 A = (A * modulateA) / 255;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	2569 }
1985 8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2570 pixel = ((Uint32)B << 16) \| ((Uint32)G << 8) \| R;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2571 *dst = pixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2572 ++src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2573 ++dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2574 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2575 data->src += data->src_pitch;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2576 data->dst += data->dst_pitch;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2577 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2578 return 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2579 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2580
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2581 int SDL_RenderCopy_ARGB8888_BGR888_Modulate_Scale(SDL_RenderCopyData *data)
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2582 {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2583 const int flags = data->flags;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2584 const Uint32 modulateR = data->r;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2585 const Uint32 modulateG = data->g;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2586 const Uint32 modulateB = data->b;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2587 const Uint32 modulateA = data->a;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2588 Uint32 pixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2589 Uint32 R, G, B, A;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2590 int srcy, srcx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2591 int posy, posx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2592 int incy, incx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2593
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2594 srcy = 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2595 posy = 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2596 incy = (data->src_h << 16) / data->dst_h;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2597 incx = (data->src_w << 16) / data->dst_w;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2598
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2599 while (data->dst_h--) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2600 Uint32 *src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2601 Uint32 dst = (Uint32 )data->dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2602 int n = data->dst_w;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2603 srcx = -1;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2604 posx = 0x10000L;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2605 while (posy >= 0x10000L) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2606 ++srcy;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2607 posy -= 0x10000L;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2608 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2609 while (n--) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2610 if (posx >= 0x10000L) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2611 while (posx >= 0x10000L) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2612 ++srcx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2613 posx -= 0x10000L;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2614 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2615 src = (Uint32 )(data->src + (srcy data->src_pitch) + (srcx * 4));
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2616 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2617 pixel = *src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2618 A = (Uint8)(pixel >> 24); R = (Uint8)(pixel >> 16); G = (Uint8)(pixel >> 8); B = (Uint8)pixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2619 if (flags & SDL_RENDERCOPY_MODULATE_COLOR) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2620 R = (R * modulateR) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2621 G = (G * modulateG) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2622 B = (B * modulateB) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2623 }
1989 5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	2624 if (flags & SDL_RENDERCOPY_MODULATE_ALPHA) {
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	2625 A = (A * modulateA) / 255;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	2626 }
1985 8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2627 pixel = ((Uint32)B << 16) \| ((Uint32)G << 8) \| R;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2628 *dst = pixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2629 posx += incx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2630 ++dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2631 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2632 posy += incy;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2633 data->dst += data->dst_pitch;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2634 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2635 return 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2636 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2637
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2638 int SDL_RenderCopy_ARGB8888_BGR888_Modulate_Blend(SDL_RenderCopyData *data)
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2639 {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2640 const int flags = data->flags;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2641 const Uint32 modulateR = data->r;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2642 const Uint32 modulateG = data->g;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2643 const Uint32 modulateB = data->b;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2644 const Uint32 modulateA = data->a;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2645 Uint32 srcpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2646 Uint32 srcR, srcG, srcB, srcA;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2647 Uint32 dstpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2648 Uint32 dstR, dstG, dstB, dstA;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2649
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2650 while (data->dst_h--) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2651 Uint32 src = (Uint32 )data->src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2652 Uint32 dst = (Uint32 )data->dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2653 int n = data->dst_w;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2654 while (n--) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2655 srcpixel = *src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2656 srcA = (Uint8)(srcpixel >> 24); srcR = (Uint8)(srcpixel >> 16); srcG = (Uint8)(srcpixel >> 8); srcB = (Uint8)srcpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2657 dstpixel = *dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2658 dstB = (Uint8)(dstpixel >> 16); dstG = (Uint8)(dstpixel >> 8); dstR = (Uint8)dstpixel; dstA = 0xFF;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2659 if (flags & SDL_RENDERCOPY_MODULATE_COLOR) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2660 srcR = (srcR * modulateR) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2661 srcG = (srcG * modulateG) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2662 srcB = (srcB * modulateB) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2663 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2664 if (flags & SDL_RENDERCOPY_MODULATE_ALPHA) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2665 srcA = (srcA * modulateA) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2666 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2667 if (flags & (SDL_RENDERCOPY_BLEND\|SDL_RENDERCOPY_ADD)) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2668 /* This goes away if we ever use premultiplied alpha */
1989 5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	2669 if (srcA < 255) {
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	2670 srcR = (srcR * srcA) / 255;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	2671 srcG = (srcG * srcA) / 255;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	2672 srcB = (srcB * srcA) / 255;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	2673 }
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	2674 }
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	2675 switch (flags & (SDL_RENDERCOPY_MASK\|SDL_RENDERCOPY_BLEND\|SDL_RENDERCOPY_ADD\|SDL_RENDERCOPY_MOD)) {
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	2676 case SDL_RENDERCOPY_MASK:
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	2677 if (srcA) {
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	2678 dstR = srcR;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	2679 dstG = srcG;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	2680 dstB = srcB;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	2681 }
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	2682 break;
1985 8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2683 case SDL_RENDERCOPY_BLEND:
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2684 dstR = srcR + ((255 - srcA) * dstR) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2685 dstG = srcG + ((255 - srcA) * dstG) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2686 dstB = srcB + ((255 - srcA) * dstB) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2687 break;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2688 case SDL_RENDERCOPY_ADD:
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2689 dstR = srcR + dstR; if (dstR > 255) dstR = 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2690 dstG = srcG + dstG; if (dstG > 255) dstG = 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2691 dstB = srcB + dstB; if (dstB > 255) dstB = 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2692 break;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2693 case SDL_RENDERCOPY_MOD:
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2694 dstR = (srcR * dstR) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2695 dstG = (srcG * dstG) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2696 dstB = (srcB * dstB) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2697 break;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2698 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2699 dstpixel = ((Uint32)dstB << 16) \| ((Uint32)dstG << 8) \| dstR;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2700 *dst = dstpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2701 ++src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2702 ++dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2703 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2704 data->src += data->src_pitch;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2705 data->dst += data->dst_pitch;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2706 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2707 return 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2708 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2709
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2710 int SDL_RenderCopy_ARGB8888_BGR888_Modulate_Blend_Scale(SDL_RenderCopyData *data)
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2711 {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2712 const int flags = data->flags;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2713 const Uint32 modulateR = data->r;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2714 const Uint32 modulateG = data->g;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2715 const Uint32 modulateB = data->b;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2716 const Uint32 modulateA = data->a;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2717 Uint32 srcpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2718 Uint32 srcR, srcG, srcB, srcA;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2719 Uint32 dstpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2720 Uint32 dstR, dstG, dstB, dstA;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2721 int srcy, srcx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2722 int posy, posx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2723 int incy, incx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2724
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2725 srcy = 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2726 posy = 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2727 incy = (data->src_h << 16) / data->dst_h;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2728 incx = (data->src_w << 16) / data->dst_w;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2729
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2730 while (data->dst_h--) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2731 Uint32 *src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2732 Uint32 dst = (Uint32 )data->dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2733 int n = data->dst_w;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2734 srcx = -1;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2735 posx = 0x10000L;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2736 while (posy >= 0x10000L) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2737 ++srcy;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2738 posy -= 0x10000L;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2739 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2740 while (n--) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2741 if (posx >= 0x10000L) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2742 while (posx >= 0x10000L) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2743 ++srcx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2744 posx -= 0x10000L;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2745 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2746 src = (Uint32 )(data->src + (srcy data->src_pitch) + (srcx * 4));
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2747 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2748 srcpixel = *src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2749 srcA = (Uint8)(srcpixel >> 24); srcR = (Uint8)(srcpixel >> 16); srcG = (Uint8)(srcpixel >> 8); srcB = (Uint8)srcpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2750 dstpixel = *dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2751 dstB = (Uint8)(dstpixel >> 16); dstG = (Uint8)(dstpixel >> 8); dstR = (Uint8)dstpixel; dstA = 0xFF;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2752 if (flags & SDL_RENDERCOPY_MODULATE_COLOR) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2753 srcR = (srcR * modulateR) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2754 srcG = (srcG * modulateG) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2755 srcB = (srcB * modulateB) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2756 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2757 if (flags & SDL_RENDERCOPY_MODULATE_ALPHA) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2758 srcA = (srcA * modulateA) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2759 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2760 if (flags & (SDL_RENDERCOPY_BLEND\|SDL_RENDERCOPY_ADD)) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2761 /* This goes away if we ever use premultiplied alpha */
1989 5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	2762 if (srcA < 255) {
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	2763 srcR = (srcR * srcA) / 255;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	2764 srcG = (srcG * srcA) / 255;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	2765 srcB = (srcB * srcA) / 255;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	2766 }
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	2767 }
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	2768 switch (flags & (SDL_RENDERCOPY_MASK\|SDL_RENDERCOPY_BLEND\|SDL_RENDERCOPY_ADD\|SDL_RENDERCOPY_MOD)) {
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	2769 case SDL_RENDERCOPY_MASK:
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	2770 if (srcA) {
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	2771 dstR = srcR;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	2772 dstG = srcG;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	2773 dstB = srcB;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	2774 }
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	2775 break;
1985 8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2776 case SDL_RENDERCOPY_BLEND:
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2777 dstR = srcR + ((255 - srcA) * dstR) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2778 dstG = srcG + ((255 - srcA) * dstG) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2779 dstB = srcB + ((255 - srcA) * dstB) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2780 break;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2781 case SDL_RENDERCOPY_ADD:
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2782 dstR = srcR + dstR; if (dstR > 255) dstR = 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2783 dstG = srcG + dstG; if (dstG > 255) dstG = 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2784 dstB = srcB + dstB; if (dstB > 255) dstB = 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2785 break;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2786 case SDL_RENDERCOPY_MOD:
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2787 dstR = (srcR * dstR) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2788 dstG = (srcG * dstG) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2789 dstB = (srcB * dstB) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2790 break;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2791 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2792 dstpixel = ((Uint32)dstB << 16) \| ((Uint32)dstG << 8) \| dstR;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2793 *dst = dstpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2794 posx += incx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2795 ++dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2796 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2797 posy += incy;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2798 data->dst += data->dst_pitch;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2799 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2800 return 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2801 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2802
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2803 int SDL_RenderCopy_RGBA8888_RGB888_Scale(SDL_RenderCopyData *data)
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2804 {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2805 const int flags = data->flags;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2806 Uint32 pixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2807 Uint32 R, G, B, A;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2808 int srcy, srcx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2809 int posy, posx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2810 int incy, incx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2811
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2812 srcy = 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2813 posy = 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2814 incy = (data->src_h << 16) / data->dst_h;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2815 incx = (data->src_w << 16) / data->dst_w;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2816
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2817 while (data->dst_h--) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2818 Uint32 *src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2819 Uint32 dst = (Uint32 )data->dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2820 int n = data->dst_w;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2821 srcx = -1;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2822 posx = 0x10000L;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2823 while (posy >= 0x10000L) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2824 ++srcy;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2825 posy -= 0x10000L;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2826 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2827 while (n--) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2828 if (posx >= 0x10000L) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2829 while (posx >= 0x10000L) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2830 ++srcx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2831 posx -= 0x10000L;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2832 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2833 src = (Uint32 )(data->src + (srcy data->src_pitch) + (srcx * 4));
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2834 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2835 pixel = *src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2836 R = (Uint8)(pixel >> 24); G = (Uint8)(pixel >> 16); B = (Uint8)(pixel >> 8); A = (Uint8)pixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2837 pixel = ((Uint32)R << 16) \| ((Uint32)G << 8) \| B;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2838 *dst = pixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2839 posx += incx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2840 ++dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2841 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2842 posy += incy;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2843 data->dst += data->dst_pitch;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2844 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2845 return 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2846 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2847
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2848 int SDL_RenderCopy_RGBA8888_RGB888_Blend(SDL_RenderCopyData *data)
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2849 {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2850 const int flags = data->flags;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2851 Uint32 srcpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2852 Uint32 srcR, srcG, srcB, srcA;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2853 Uint32 dstpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2854 Uint32 dstR, dstG, dstB, dstA;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2855
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2856 while (data->dst_h--) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2857 Uint32 src = (Uint32 )data->src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2858 Uint32 dst = (Uint32 )data->dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2859 int n = data->dst_w;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2860 while (n--) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2861 srcpixel = *src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2862 srcR = (Uint8)(srcpixel >> 24); srcG = (Uint8)(srcpixel >> 16); srcB = (Uint8)(srcpixel >> 8); srcA = (Uint8)srcpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2863 dstpixel = *dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2864 dstR = (Uint8)(dstpixel >> 16); dstG = (Uint8)(dstpixel >> 8); dstB = (Uint8)dstpixel; dstA = 0xFF;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2865 if (flags & (SDL_RENDERCOPY_BLEND\|SDL_RENDERCOPY_ADD)) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2866 /* This goes away if we ever use premultiplied alpha */
1989 5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	2867 if (srcA < 255) {
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	2868 srcR = (srcR * srcA) / 255;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	2869 srcG = (srcG * srcA) / 255;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	2870 srcB = (srcB * srcA) / 255;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	2871 }
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	2872 }
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	2873 switch (flags & (SDL_RENDERCOPY_MASK\|SDL_RENDERCOPY_BLEND\|SDL_RENDERCOPY_ADD\|SDL_RENDERCOPY_MOD)) {
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	2874 case SDL_RENDERCOPY_MASK:
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	2875 if (srcA) {
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	2876 dstR = srcR;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	2877 dstG = srcG;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	2878 dstB = srcB;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	2879 }
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	2880 break;
1985 8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2881 case SDL_RENDERCOPY_BLEND:
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2882 dstR = srcR + ((255 - srcA) * dstR) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2883 dstG = srcG + ((255 - srcA) * dstG) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2884 dstB = srcB + ((255 - srcA) * dstB) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2885 break;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2886 case SDL_RENDERCOPY_ADD:
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2887 dstR = srcR + dstR; if (dstR > 255) dstR = 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2888 dstG = srcG + dstG; if (dstG > 255) dstG = 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2889 dstB = srcB + dstB; if (dstB > 255) dstB = 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2890 break;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2891 case SDL_RENDERCOPY_MOD:
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2892 dstR = (srcR * dstR) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2893 dstG = (srcG * dstG) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2894 dstB = (srcB * dstB) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2895 break;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2896 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2897 dstpixel = ((Uint32)dstR << 16) \| ((Uint32)dstG << 8) \| dstB;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2898 *dst = dstpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2899 ++src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2900 ++dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2901 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2902 data->src += data->src_pitch;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2903 data->dst += data->dst_pitch;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2904 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2905 return 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2906 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2907
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2908 int SDL_RenderCopy_RGBA8888_RGB888_Blend_Scale(SDL_RenderCopyData *data)
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2909 {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2910 const int flags = data->flags;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2911 Uint32 srcpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2912 Uint32 srcR, srcG, srcB, srcA;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2913 Uint32 dstpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2914 Uint32 dstR, dstG, dstB, dstA;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2915 int srcy, srcx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2916 int posy, posx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2917 int incy, incx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2918
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2919 srcy = 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2920 posy = 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2921 incy = (data->src_h << 16) / data->dst_h;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2922 incx = (data->src_w << 16) / data->dst_w;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2923
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2924 while (data->dst_h--) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2925 Uint32 *src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2926 Uint32 dst = (Uint32 )data->dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2927 int n = data->dst_w;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2928 srcx = -1;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2929 posx = 0x10000L;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2930 while (posy >= 0x10000L) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2931 ++srcy;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2932 posy -= 0x10000L;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2933 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2934 while (n--) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2935 if (posx >= 0x10000L) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2936 while (posx >= 0x10000L) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2937 ++srcx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2938 posx -= 0x10000L;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2939 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2940 src = (Uint32 )(data->src + (srcy data->src_pitch) + (srcx * 4));
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2941 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2942 srcpixel = *src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2943 srcR = (Uint8)(srcpixel >> 24); srcG = (Uint8)(srcpixel >> 16); srcB = (Uint8)(srcpixel >> 8); srcA = (Uint8)srcpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2944 dstpixel = *dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2945 dstR = (Uint8)(dstpixel >> 16); dstG = (Uint8)(dstpixel >> 8); dstB = (Uint8)dstpixel; dstA = 0xFF;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2946 if (flags & (SDL_RENDERCOPY_BLEND\|SDL_RENDERCOPY_ADD)) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2947 /* This goes away if we ever use premultiplied alpha */
1989 5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	2948 if (srcA < 255) {
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	2949 srcR = (srcR * srcA) / 255;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	2950 srcG = (srcG * srcA) / 255;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	2951 srcB = (srcB * srcA) / 255;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	2952 }
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	2953 }
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	2954 switch (flags & (SDL_RENDERCOPY_MASK\|SDL_RENDERCOPY_BLEND\|SDL_RENDERCOPY_ADD\|SDL_RENDERCOPY_MOD)) {
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	2955 case SDL_RENDERCOPY_MASK:
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	2956 if (srcA) {
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	2957 dstR = srcR;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	2958 dstG = srcG;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	2959 dstB = srcB;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	2960 }
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	2961 break;
1985 8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2962 case SDL_RENDERCOPY_BLEND:
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2963 dstR = srcR + ((255 - srcA) * dstR) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2964 dstG = srcG + ((255 - srcA) * dstG) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2965 dstB = srcB + ((255 - srcA) * dstB) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2966 break;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2967 case SDL_RENDERCOPY_ADD:
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2968 dstR = srcR + dstR; if (dstR > 255) dstR = 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2969 dstG = srcG + dstG; if (dstG > 255) dstG = 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2970 dstB = srcB + dstB; if (dstB > 255) dstB = 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2971 break;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2972 case SDL_RENDERCOPY_MOD:
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2973 dstR = (srcR * dstR) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2974 dstG = (srcG * dstG) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2975 dstB = (srcB * dstB) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2976 break;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2977 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2978 dstpixel = ((Uint32)dstR << 16) \| ((Uint32)dstG << 8) \| dstB;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2979 *dst = dstpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2980 posx += incx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2981 ++dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2982 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2983 posy += incy;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2984 data->dst += data->dst_pitch;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2985 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2986 return 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2987 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2988
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2989 int SDL_RenderCopy_RGBA8888_RGB888_Modulate(SDL_RenderCopyData *data)
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2990 {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2991 const int flags = data->flags;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2992 const Uint32 modulateR = data->r;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2993 const Uint32 modulateG = data->g;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2994 const Uint32 modulateB = data->b;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2995 const Uint32 modulateA = data->a;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2996 Uint32 pixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2997 Uint32 R, G, B, A;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2998
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2999 while (data->dst_h--) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3000 Uint32 src = (Uint32 )data->src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3001 Uint32 dst = (Uint32 )data->dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3002 int n = data->dst_w;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3003 while (n--) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3004 pixel = *src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3005 R = (Uint8)(pixel >> 24); G = (Uint8)(pixel >> 16); B = (Uint8)(pixel >> 8); A = (Uint8)pixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3006 if (flags & SDL_RENDERCOPY_MODULATE_COLOR) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3007 R = (R * modulateR) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3008 G = (G * modulateG) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3009 B = (B * modulateB) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3010 }
1989 5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	3011 if (flags & SDL_RENDERCOPY_MODULATE_ALPHA) {
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	3012 A = (A * modulateA) / 255;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	3013 }
1985 8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3014 pixel = ((Uint32)R << 16) \| ((Uint32)G << 8) \| B;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3015 *dst = pixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3016 ++src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3017 ++dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3018 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3019 data->src += data->src_pitch;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3020 data->dst += data->dst_pitch;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3021 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3022 return 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3023 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3024
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3025 int SDL_RenderCopy_RGBA8888_RGB888_Modulate_Scale(SDL_RenderCopyData *data)
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3026 {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3027 const int flags = data->flags;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3028 const Uint32 modulateR = data->r;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3029 const Uint32 modulateG = data->g;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3030 const Uint32 modulateB = data->b;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3031 const Uint32 modulateA = data->a;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3032 Uint32 pixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3033 Uint32 R, G, B, A;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3034 int srcy, srcx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3035 int posy, posx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3036 int incy, incx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3037
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3038 srcy = 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3039 posy = 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3040 incy = (data->src_h << 16) / data->dst_h;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3041 incx = (data->src_w << 16) / data->dst_w;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3042
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3043 while (data->dst_h--) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3044 Uint32 *src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3045 Uint32 dst = (Uint32 )data->dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3046 int n = data->dst_w;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3047 srcx = -1;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3048 posx = 0x10000L;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3049 while (posy >= 0x10000L) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3050 ++srcy;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3051 posy -= 0x10000L;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3052 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3053 while (n--) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3054 if (posx >= 0x10000L) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3055 while (posx >= 0x10000L) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3056 ++srcx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3057 posx -= 0x10000L;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3058 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3059 src = (Uint32 )(data->src + (srcy data->src_pitch) + (srcx * 4));
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3060 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3061 pixel = *src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3062 R = (Uint8)(pixel >> 24); G = (Uint8)(pixel >> 16); B = (Uint8)(pixel >> 8); A = (Uint8)pixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3063 if (flags & SDL_RENDERCOPY_MODULATE_COLOR) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3064 R = (R * modulateR) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3065 G = (G * modulateG) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3066 B = (B * modulateB) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3067 }
1989 5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	3068 if (flags & SDL_RENDERCOPY_MODULATE_ALPHA) {
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	3069 A = (A * modulateA) / 255;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	3070 }
1985 8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3071 pixel = ((Uint32)R << 16) \| ((Uint32)G << 8) \| B;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3072 *dst = pixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3073 posx += incx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3074 ++dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3075 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3076 posy += incy;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3077 data->dst += data->dst_pitch;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3078 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3079 return 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3080 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3081
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3082 int SDL_RenderCopy_RGBA8888_RGB888_Modulate_Blend(SDL_RenderCopyData *data)
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3083 {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3084 const int flags = data->flags;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3085 const Uint32 modulateR = data->r;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3086 const Uint32 modulateG = data->g;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3087 const Uint32 modulateB = data->b;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3088 const Uint32 modulateA = data->a;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3089 Uint32 srcpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3090 Uint32 srcR, srcG, srcB, srcA;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3091 Uint32 dstpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3092 Uint32 dstR, dstG, dstB, dstA;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3093
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3094 while (data->dst_h--) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3095 Uint32 src = (Uint32 )data->src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3096 Uint32 dst = (Uint32 )data->dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3097 int n = data->dst_w;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3098 while (n--) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3099 srcpixel = *src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3100 srcR = (Uint8)(srcpixel >> 24); srcG = (Uint8)(srcpixel >> 16); srcB = (Uint8)(srcpixel >> 8); srcA = (Uint8)srcpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3101 dstpixel = *dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3102 dstR = (Uint8)(dstpixel >> 16); dstG = (Uint8)(dstpixel >> 8); dstB = (Uint8)dstpixel; dstA = 0xFF;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3103 if (flags & SDL_RENDERCOPY_MODULATE_COLOR) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3104 srcR = (srcR * modulateR) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3105 srcG = (srcG * modulateG) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3106 srcB = (srcB * modulateB) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3107 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3108 if (flags & SDL_RENDERCOPY_MODULATE_ALPHA) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3109 srcA = (srcA * modulateA) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3110 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3111 if (flags & (SDL_RENDERCOPY_BLEND\|SDL_RENDERCOPY_ADD)) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3112 /* This goes away if we ever use premultiplied alpha */
1989 5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	3113 if (srcA < 255) {
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	3114 srcR = (srcR * srcA) / 255;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	3115 srcG = (srcG * srcA) / 255;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	3116 srcB = (srcB * srcA) / 255;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	3117 }
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	3118 }
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	3119 switch (flags & (SDL_RENDERCOPY_MASK\|SDL_RENDERCOPY_BLEND\|SDL_RENDERCOPY_ADD\|SDL_RENDERCOPY_MOD)) {
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	3120 case SDL_RENDERCOPY_MASK:
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	3121 if (srcA) {
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	3122 dstR = srcR;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	3123 dstG = srcG;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	3124 dstB = srcB;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	3125 }
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	3126 break;
1985 8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3127 case SDL_RENDERCOPY_BLEND:
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3128 dstR = srcR + ((255 - srcA) * dstR) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3129 dstG = srcG + ((255 - srcA) * dstG) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3130 dstB = srcB + ((255 - srcA) * dstB) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3131 break;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3132 case SDL_RENDERCOPY_ADD:
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3133 dstR = srcR + dstR; if (dstR > 255) dstR = 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3134 dstG = srcG + dstG; if (dstG > 255) dstG = 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3135 dstB = srcB + dstB; if (dstB > 255) dstB = 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3136 break;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3137 case SDL_RENDERCOPY_MOD:
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3138 dstR = (srcR * dstR) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3139 dstG = (srcG * dstG) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3140 dstB = (srcB * dstB) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3141 break;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3142 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3143 dstpixel = ((Uint32)dstR << 16) \| ((Uint32)dstG << 8) \| dstB;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3144 *dst = dstpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3145 ++src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3146 ++dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3147 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3148 data->src += data->src_pitch;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3149 data->dst += data->dst_pitch;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3150 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3151 return 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3152 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3153
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3154 int SDL_RenderCopy_RGBA8888_RGB888_Modulate_Blend_Scale(SDL_RenderCopyData *data)
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3155 {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3156 const int flags = data->flags;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3157 const Uint32 modulateR = data->r;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3158 const Uint32 modulateG = data->g;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3159 const Uint32 modulateB = data->b;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3160 const Uint32 modulateA = data->a;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3161 Uint32 srcpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3162 Uint32 srcR, srcG, srcB, srcA;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3163 Uint32 dstpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3164 Uint32 dstR, dstG, dstB, dstA;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3165 int srcy, srcx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3166 int posy, posx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3167 int incy, incx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3168
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3169 srcy = 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3170 posy = 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3171 incy = (data->src_h << 16) / data->dst_h;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3172 incx = (data->src_w << 16) / data->dst_w;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3173
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3174 while (data->dst_h--) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3175 Uint32 *src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3176 Uint32 dst = (Uint32 )data->dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3177 int n = data->dst_w;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3178 srcx = -1;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3179 posx = 0x10000L;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3180 while (posy >= 0x10000L) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3181 ++srcy;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3182 posy -= 0x10000L;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3183 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3184 while (n--) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3185 if (posx >= 0x10000L) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3186 while (posx >= 0x10000L) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3187 ++srcx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3188 posx -= 0x10000L;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3189 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3190 src = (Uint32 )(data->src + (srcy data->src_pitch) + (srcx * 4));
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3191 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3192 srcpixel = *src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3193 srcR = (Uint8)(srcpixel >> 24); srcG = (Uint8)(srcpixel >> 16); srcB = (Uint8)(srcpixel >> 8); srcA = (Uint8)srcpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3194 dstpixel = *dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3195 dstR = (Uint8)(dstpixel >> 16); dstG = (Uint8)(dstpixel >> 8); dstB = (Uint8)dstpixel; dstA = 0xFF;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3196 if (flags & SDL_RENDERCOPY_MODULATE_COLOR) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3197 srcR = (srcR * modulateR) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3198 srcG = (srcG * modulateG) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3199 srcB = (srcB * modulateB) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3200 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3201 if (flags & SDL_RENDERCOPY_MODULATE_ALPHA) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3202 srcA = (srcA * modulateA) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3203 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3204 if (flags & (SDL_RENDERCOPY_BLEND\|SDL_RENDERCOPY_ADD)) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3205 /* This goes away if we ever use premultiplied alpha */
1989 5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	3206 if (srcA < 255) {
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	3207 srcR = (srcR * srcA) / 255;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	3208 srcG = (srcG * srcA) / 255;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	3209 srcB = (srcB * srcA) / 255;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	3210 }
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	3211 }
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	3212 switch (flags & (SDL_RENDERCOPY_MASK\|SDL_RENDERCOPY_BLEND\|SDL_RENDERCOPY_ADD\|SDL_RENDERCOPY_MOD)) {
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	3213 case SDL_RENDERCOPY_MASK:
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	3214 if (srcA) {
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	3215 dstR = srcR;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	3216 dstG = srcG;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	3217 dstB = srcB;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	3218 }
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	3219 break;
1985 8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3220 case SDL_RENDERCOPY_BLEND:
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3221 dstR = srcR + ((255 - srcA) * dstR) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3222 dstG = srcG + ((255 - srcA) * dstG) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3223 dstB = srcB + ((255 - srcA) * dstB) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3224 break;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3225 case SDL_RENDERCOPY_ADD:
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3226 dstR = srcR + dstR; if (dstR > 255) dstR = 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3227 dstG = srcG + dstG; if (dstG > 255) dstG = 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3228 dstB = srcB + dstB; if (dstB > 255) dstB = 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3229 break;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3230 case SDL_RENDERCOPY_MOD:
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3231 dstR = (srcR * dstR) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3232 dstG = (srcG * dstG) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3233 dstB = (srcB * dstB) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3234 break;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3235 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3236 dstpixel = ((Uint32)dstR << 16) \| ((Uint32)dstG << 8) \| dstB;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3237 *dst = dstpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3238 posx += incx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3239 ++dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3240 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3241 posy += incy;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3242 data->dst += data->dst_pitch;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3243 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3244 return 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3245 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3246
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3247 int SDL_RenderCopy_RGBA8888_BGR888_Scale(SDL_RenderCopyData *data)
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3248 {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3249 const int flags = data->flags;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3250 Uint32 pixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3251 Uint32 R, G, B, A;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3252 int srcy, srcx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3253 int posy, posx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3254 int incy, incx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3255
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3256 srcy = 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3257 posy = 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3258 incy = (data->src_h << 16) / data->dst_h;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3259 incx = (data->src_w << 16) / data->dst_w;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3260
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3261 while (data->dst_h--) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3262 Uint32 *src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3263 Uint32 dst = (Uint32 )data->dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3264 int n = data->dst_w;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3265 srcx = -1;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3266 posx = 0x10000L;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3267 while (posy >= 0x10000L) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3268 ++srcy;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3269 posy -= 0x10000L;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3270 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3271 while (n--) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3272 if (posx >= 0x10000L) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3273 while (posx >= 0x10000L) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3274 ++srcx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3275 posx -= 0x10000L;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3276 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3277 src = (Uint32 )(data->src + (srcy data->src_pitch) + (srcx * 4));
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3278 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3279 pixel = *src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3280 R = (Uint8)(pixel >> 24); G = (Uint8)(pixel >> 16); B = (Uint8)(pixel >> 8); A = (Uint8)pixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3281 pixel = ((Uint32)B << 16) \| ((Uint32)G << 8) \| R;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3282 *dst = pixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3283 posx += incx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3284 ++dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3285 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3286 posy += incy;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3287 data->dst += data->dst_pitch;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3288 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3289 return 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3290 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3291
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3292 int SDL_RenderCopy_RGBA8888_BGR888_Blend(SDL_RenderCopyData *data)
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3293 {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3294 const int flags = data->flags;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3295 Uint32 srcpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3296 Uint32 srcR, srcG, srcB, srcA;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3297 Uint32 dstpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3298 Uint32 dstR, dstG, dstB, dstA;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3299
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3300 while (data->dst_h--) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3301 Uint32 src = (Uint32 )data->src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3302 Uint32 dst = (Uint32 )data->dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3303 int n = data->dst_w;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3304 while (n--) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3305 srcpixel = *src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3306 srcR = (Uint8)(srcpixel >> 24); srcG = (Uint8)(srcpixel >> 16); srcB = (Uint8)(srcpixel >> 8); srcA = (Uint8)srcpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3307 dstpixel = *dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3308 dstB = (Uint8)(dstpixel >> 16); dstG = (Uint8)(dstpixel >> 8); dstR = (Uint8)dstpixel; dstA = 0xFF;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3309 if (flags & (SDL_RENDERCOPY_BLEND\|SDL_RENDERCOPY_ADD)) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3310 /* This goes away if we ever use premultiplied alpha */
1989 5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	3311 if (srcA < 255) {
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	3312 srcR = (srcR * srcA) / 255;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	3313 srcG = (srcG * srcA) / 255;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	3314 srcB = (srcB * srcA) / 255;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	3315 }
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	3316 }
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	3317 switch (flags & (SDL_RENDERCOPY_MASK\|SDL_RENDERCOPY_BLEND\|SDL_RENDERCOPY_ADD\|SDL_RENDERCOPY_MOD)) {
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	3318 case SDL_RENDERCOPY_MASK:
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	3319 if (srcA) {
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	3320 dstR = srcR;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	3321 dstG = srcG;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	3322 dstB = srcB;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	3323 }
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	3324 break;
1985 8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3325 case SDL_RENDERCOPY_BLEND:
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3326 dstR = srcR + ((255 - srcA) * dstR) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3327 dstG = srcG + ((255 - srcA) * dstG) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3328 dstB = srcB + ((255 - srcA) * dstB) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3329 break;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3330 case SDL_RENDERCOPY_ADD:
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3331 dstR = srcR + dstR; if (dstR > 255) dstR = 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3332 dstG = srcG + dstG; if (dstG > 255) dstG = 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3333 dstB = srcB + dstB; if (dstB > 255) dstB = 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3334 break;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3335 case SDL_RENDERCOPY_MOD:
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3336 dstR = (srcR * dstR) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3337 dstG = (srcG * dstG) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3338 dstB = (srcB * dstB) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3339 break;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3340 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3341 dstpixel = ((Uint32)dstB << 16) \| ((Uint32)dstG << 8) \| dstR;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3342 *dst = dstpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3343 ++src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3344 ++dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3345 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3346 data->src += data->src_pitch;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3347 data->dst += data->dst_pitch;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3348 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3349 return 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3350 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3351
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3352 int SDL_RenderCopy_RGBA8888_BGR888_Blend_Scale(SDL_RenderCopyData *data)
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3353 {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3354 const int flags = data->flags;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3355 Uint32 srcpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3356 Uint32 srcR, srcG, srcB, srcA;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3357 Uint32 dstpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3358 Uint32 dstR, dstG, dstB, dstA;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3359 int srcy, srcx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3360 int posy, posx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3361 int incy, incx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3362
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3363 srcy = 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3364 posy = 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3365 incy = (data->src_h << 16) / data->dst_h;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3366 incx = (data->src_w << 16) / data->dst_w;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3367
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3368 while (data->dst_h--) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3369 Uint32 *src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3370 Uint32 dst = (Uint32 )data->dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3371 int n = data->dst_w;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3372 srcx = -1;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3373 posx = 0x10000L;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3374 while (posy >= 0x10000L) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3375 ++srcy;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3376 posy -= 0x10000L;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3377 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3378 while (n--) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3379 if (posx >= 0x10000L) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3380 while (posx >= 0x10000L) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3381 ++srcx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3382 posx -= 0x10000L;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3383 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3384 src = (Uint32 )(data->src + (srcy data->src_pitch) + (srcx * 4));
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3385 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3386 srcpixel = *src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3387 srcR = (Uint8)(srcpixel >> 24); srcG = (Uint8)(srcpixel >> 16); srcB = (Uint8)(srcpixel >> 8); srcA = (Uint8)srcpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3388 dstpixel = *dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3389 dstB = (Uint8)(dstpixel >> 16); dstG = (Uint8)(dstpixel >> 8); dstR = (Uint8)dstpixel; dstA = 0xFF;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3390 if (flags & (SDL_RENDERCOPY_BLEND\|SDL_RENDERCOPY_ADD)) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3391 /* This goes away if we ever use premultiplied alpha */
1989 5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	3392 if (srcA < 255) {
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	3393 srcR = (srcR * srcA) / 255;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	3394 srcG = (srcG * srcA) / 255;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	3395 srcB = (srcB * srcA) / 255;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	3396 }
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	3397 }
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	3398 switch (flags & (SDL_RENDERCOPY_MASK\|SDL_RENDERCOPY_BLEND\|SDL_RENDERCOPY_ADD\|SDL_RENDERCOPY_MOD)) {
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	3399 case SDL_RENDERCOPY_MASK:
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	3400 if (srcA) {
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	3401 dstR = srcR;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	3402 dstG = srcG;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	3403 dstB = srcB;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	3404 }
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	3405 break;
1985 8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3406 case SDL_RENDERCOPY_BLEND:
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3407 dstR = srcR + ((255 - srcA) * dstR) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3408 dstG = srcG + ((255 - srcA) * dstG) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3409 dstB = srcB + ((255 - srcA) * dstB) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3410 break;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3411 case SDL_RENDERCOPY_ADD:
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3412 dstR = srcR + dstR; if (dstR > 255) dstR = 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3413 dstG = srcG + dstG; if (dstG > 255) dstG = 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3414 dstB = srcB + dstB; if (dstB > 255) dstB = 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3415 break;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3416 case SDL_RENDERCOPY_MOD:
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3417 dstR = (srcR * dstR) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3418 dstG = (srcG * dstG) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3419 dstB = (srcB * dstB) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3420 break;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3421 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3422 dstpixel = ((Uint32)dstB << 16) \| ((Uint32)dstG << 8) \| dstR;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3423 *dst = dstpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3424 posx += incx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3425 ++dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3426 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3427 posy += incy;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3428 data->dst += data->dst_pitch;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3429 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3430 return 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3431 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3432
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3433 int SDL_RenderCopy_RGBA8888_BGR888_Modulate(SDL_RenderCopyData *data)
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3434 {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3435 const int flags = data->flags;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3436 const Uint32 modulateR = data->r;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3437 const Uint32 modulateG = data->g;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3438 const Uint32 modulateB = data->b;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3439 const Uint32 modulateA = data->a;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3440 Uint32 pixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3441 Uint32 R, G, B, A;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3442
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3443 while (data->dst_h--) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3444 Uint32 src = (Uint32 )data->src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3445 Uint32 dst = (Uint32 )data->dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3446 int n = data->dst_w;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3447 while (n--) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3448 pixel = *src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3449 R = (Uint8)(pixel >> 24); G = (Uint8)(pixel >> 16); B = (Uint8)(pixel >> 8); A = (Uint8)pixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3450 if (flags & SDL_RENDERCOPY_MODULATE_COLOR) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3451 R = (R * modulateR) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3452 G = (G * modulateG) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3453 B = (B * modulateB) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3454 }
1989 5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	3455 if (flags & SDL_RENDERCOPY_MODULATE_ALPHA) {
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	3456 A = (A * modulateA) / 255;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	3457 }
1985 8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3458 pixel = ((Uint32)B << 16) \| ((Uint32)G << 8) \| R;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3459 *dst = pixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3460 ++src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3461 ++dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3462 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3463 data->src += data->src_pitch;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3464 data->dst += data->dst_pitch;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3465 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3466 return 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3467 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3468
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3469 int SDL_RenderCopy_RGBA8888_BGR888_Modulate_Scale(SDL_RenderCopyData *data)
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3470 {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3471 const int flags = data->flags;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3472 const Uint32 modulateR = data->r;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3473 const Uint32 modulateG = data->g;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3474 const Uint32 modulateB = data->b;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3475 const Uint32 modulateA = data->a;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3476 Uint32 pixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3477 Uint32 R, G, B, A;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3478 int srcy, srcx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3479 int posy, posx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3480 int incy, incx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3481
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3482 srcy = 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3483 posy = 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3484 incy = (data->src_h << 16) / data->dst_h;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3485 incx = (data->src_w << 16) / data->dst_w;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3486
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3487 while (data->dst_h--) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3488 Uint32 *src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3489 Uint32 dst = (Uint32 )data->dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3490 int n = data->dst_w;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3491 srcx = -1;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3492 posx = 0x10000L;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3493 while (posy >= 0x10000L) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3494 ++srcy;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3495 posy -= 0x10000L;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3496 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3497 while (n--) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3498 if (posx >= 0x10000L) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3499 while (posx >= 0x10000L) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3500 ++srcx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3501 posx -= 0x10000L;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3502 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3503 src = (Uint32 )(data->src + (srcy data->src_pitch) + (srcx * 4));
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3504 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3505 pixel = *src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3506 R = (Uint8)(pixel >> 24); G = (Uint8)(pixel >> 16); B = (Uint8)(pixel >> 8); A = (Uint8)pixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3507 if (flags & SDL_RENDERCOPY_MODULATE_COLOR) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3508 R = (R * modulateR) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3509 G = (G * modulateG) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3510 B = (B * modulateB) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3511 }
1989 5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	3512 if (flags & SDL_RENDERCOPY_MODULATE_ALPHA) {
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	3513 A = (A * modulateA) / 255;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	3514 }
1985 8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3515 pixel = ((Uint32)B << 16) \| ((Uint32)G << 8) \| R;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3516 *dst = pixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3517 posx += incx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3518 ++dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3519 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3520 posy += incy;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3521 data->dst += data->dst_pitch;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3522 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3523 return 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3524 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3525
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3526 int SDL_RenderCopy_RGBA8888_BGR888_Modulate_Blend(SDL_RenderCopyData *data)
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3527 {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3528 const int flags = data->flags;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3529 const Uint32 modulateR = data->r;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3530 const Uint32 modulateG = data->g;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3531 const Uint32 modulateB = data->b;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3532 const Uint32 modulateA = data->a;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3533 Uint32 srcpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3534 Uint32 srcR, srcG, srcB, srcA;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3535 Uint32 dstpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3536 Uint32 dstR, dstG, dstB, dstA;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3537
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3538 while (data->dst_h--) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3539 Uint32 src = (Uint32 )data->src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3540 Uint32 dst = (Uint32 )data->dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3541 int n = data->dst_w;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3542 while (n--) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3543 srcpixel = *src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3544 srcR = (Uint8)(srcpixel >> 24); srcG = (Uint8)(srcpixel >> 16); srcB = (Uint8)(srcpixel >> 8); srcA = (Uint8)srcpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3545 dstpixel = *dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3546 dstB = (Uint8)(dstpixel >> 16); dstG = (Uint8)(dstpixel >> 8); dstR = (Uint8)dstpixel; dstA = 0xFF;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3547 if (flags & SDL_RENDERCOPY_MODULATE_COLOR) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3548 srcR = (srcR * modulateR) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3549 srcG = (srcG * modulateG) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3550 srcB = (srcB * modulateB) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3551 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3552 if (flags & SDL_RENDERCOPY_MODULATE_ALPHA) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3553 srcA = (srcA * modulateA) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3554 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3555 if (flags & (SDL_RENDERCOPY_BLEND\|SDL_RENDERCOPY_ADD)) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3556 /* This goes away if we ever use premultiplied alpha */
1989 5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	3557 if (srcA < 255) {
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	3558 srcR = (srcR * srcA) / 255;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	3559 srcG = (srcG * srcA) / 255;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	3560 srcB = (srcB * srcA) / 255;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	3561 }
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	3562 }
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	3563 switch (flags & (SDL_RENDERCOPY_MASK\|SDL_RENDERCOPY_BLEND\|SDL_RENDERCOPY_ADD\|SDL_RENDERCOPY_MOD)) {
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	3564 case SDL_RENDERCOPY_MASK:
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	3565 if (srcA) {
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	3566 dstR = srcR;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	3567 dstG = srcG;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	3568 dstB = srcB;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	3569 }
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	3570 break;
1985 8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3571 case SDL_RENDERCOPY_BLEND:
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3572 dstR = srcR + ((255 - srcA) * dstR) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3573 dstG = srcG + ((255 - srcA) * dstG) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3574 dstB = srcB + ((255 - srcA) * dstB) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3575 break;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3576 case SDL_RENDERCOPY_ADD:
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3577 dstR = srcR + dstR; if (dstR > 255) dstR = 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3578 dstG = srcG + dstG; if (dstG > 255) dstG = 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3579 dstB = srcB + dstB; if (dstB > 255) dstB = 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3580 break;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3581 case SDL_RENDERCOPY_MOD:
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3582 dstR = (srcR * dstR) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3583 dstG = (srcG * dstG) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3584 dstB = (srcB * dstB) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3585 break;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3586 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3587 dstpixel = ((Uint32)dstB << 16) \| ((Uint32)dstG << 8) \| dstR;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3588 *dst = dstpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3589 ++src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3590 ++dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3591 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3592 data->src += data->src_pitch;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3593 data->dst += data->dst_pitch;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3594 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3595 return 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3596 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3597
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3598 int SDL_RenderCopy_RGBA8888_BGR888_Modulate_Blend_Scale(SDL_RenderCopyData *data)
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3599 {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3600 const int flags = data->flags;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3601 const Uint32 modulateR = data->r;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3602 const Uint32 modulateG = data->g;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3603 const Uint32 modulateB = data->b;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3604 const Uint32 modulateA = data->a;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3605 Uint32 srcpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3606 Uint32 srcR, srcG, srcB, srcA;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3607 Uint32 dstpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3608 Uint32 dstR, dstG, dstB, dstA;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3609 int srcy, srcx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3610 int posy, posx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3611 int incy, incx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3612
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3613 srcy = 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3614 posy = 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3615 incy = (data->src_h << 16) / data->dst_h;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3616 incx = (data->src_w << 16) / data->dst_w;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3617
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3618 while (data->dst_h--) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3619 Uint32 *src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3620 Uint32 dst = (Uint32 )data->dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3621 int n = data->dst_w;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3622 srcx = -1;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3623 posx = 0x10000L;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3624 while (posy >= 0x10000L) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3625 ++srcy;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3626 posy -= 0x10000L;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3627 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3628 while (n--) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3629 if (posx >= 0x10000L) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3630 while (posx >= 0x10000L) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3631 ++srcx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3632 posx -= 0x10000L;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3633 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3634 src = (Uint32 )(data->src + (srcy data->src_pitch) + (srcx * 4));
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3635 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3636 srcpixel = *src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3637 srcR = (Uint8)(srcpixel >> 24); srcG = (Uint8)(srcpixel >> 16); srcB = (Uint8)(srcpixel >> 8); srcA = (Uint8)srcpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3638 dstpixel = *dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3639 dstB = (Uint8)(dstpixel >> 16); dstG = (Uint8)(dstpixel >> 8); dstR = (Uint8)dstpixel; dstA = 0xFF;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3640 if (flags & SDL_RENDERCOPY_MODULATE_COLOR) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3641 srcR = (srcR * modulateR) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3642 srcG = (srcG * modulateG) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3643 srcB = (srcB * modulateB) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3644 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3645 if (flags & SDL_RENDERCOPY_MODULATE_ALPHA) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3646 srcA = (srcA * modulateA) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3647 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3648 if (flags & (SDL_RENDERCOPY_BLEND\|SDL_RENDERCOPY_ADD)) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3649 /* This goes away if we ever use premultiplied alpha */
1989 5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	3650 if (srcA < 255) {
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	3651 srcR = (srcR * srcA) / 255;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	3652 srcG = (srcG * srcA) / 255;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	3653 srcB = (srcB * srcA) / 255;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	3654 }
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	3655 }
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	3656 switch (flags & (SDL_RENDERCOPY_MASK\|SDL_RENDERCOPY_BLEND\|SDL_RENDERCOPY_ADD\|SDL_RENDERCOPY_MOD)) {
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	3657 case SDL_RENDERCOPY_MASK:
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	3658 if (srcA) {
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	3659 dstR = srcR;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	3660 dstG = srcG;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	3661 dstB = srcB;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	3662 }
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	3663 break;
1985 8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3664 case SDL_RENDERCOPY_BLEND:
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3665 dstR = srcR + ((255 - srcA) * dstR) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3666 dstG = srcG + ((255 - srcA) * dstG) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3667 dstB = srcB + ((255 - srcA) * dstB) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3668 break;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3669 case SDL_RENDERCOPY_ADD:
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3670 dstR = srcR + dstR; if (dstR > 255) dstR = 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3671 dstG = srcG + dstG; if (dstG > 255) dstG = 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3672 dstB = srcB + dstB; if (dstB > 255) dstB = 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3673 break;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3674 case SDL_RENDERCOPY_MOD:
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3675 dstR = (srcR * dstR) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3676 dstG = (srcG * dstG) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3677 dstB = (srcB * dstB) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3678 break;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3679 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3680 dstpixel = ((Uint32)dstB << 16) \| ((Uint32)dstG << 8) \| dstR;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3681 *dst = dstpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3682 posx += incx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3683 ++dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3684 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3685 posy += incy;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3686 data->dst += data->dst_pitch;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3687 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3688 return 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3689 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3690
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3691 int SDL_RenderCopy_ABGR8888_RGB888_Scale(SDL_RenderCopyData *data)
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3692 {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3693 const int flags = data->flags;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3694 Uint32 pixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3695 Uint32 R, G, B, A;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3696 int srcy, srcx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3697 int posy, posx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3698 int incy, incx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3699
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3700 srcy = 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3701 posy = 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3702 incy = (data->src_h << 16) / data->dst_h;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3703 incx = (data->src_w << 16) / data->dst_w;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3704
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3705 while (data->dst_h--) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3706 Uint32 *src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3707 Uint32 dst = (Uint32 )data->dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3708 int n = data->dst_w;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3709 srcx = -1;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3710 posx = 0x10000L;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3711 while (posy >= 0x10000L) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3712 ++srcy;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3713 posy -= 0x10000L;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3714 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3715 while (n--) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3716 if (posx >= 0x10000L) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3717 while (posx >= 0x10000L) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3718 ++srcx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3719 posx -= 0x10000L;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3720 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3721 src = (Uint32 )(data->src + (srcy data->src_pitch) + (srcx * 4));
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3722 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3723 pixel = *src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3724 A = (Uint8)(pixel >> 24); B = (Uint8)(pixel >> 16); G = (Uint8)(pixel >> 8); R = (Uint8)pixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3725 pixel = ((Uint32)R << 16) \| ((Uint32)G << 8) \| B;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3726 *dst = pixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3727 posx += incx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3728 ++dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3729 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3730 posy += incy;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3731 data->dst += data->dst_pitch;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3732 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3733 return 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3734 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3735
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3736 int SDL_RenderCopy_ABGR8888_RGB888_Blend(SDL_RenderCopyData *data)
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3737 {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3738 const int flags = data->flags;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3739 Uint32 srcpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3740 Uint32 srcR, srcG, srcB, srcA;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3741 Uint32 dstpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3742 Uint32 dstR, dstG, dstB, dstA;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3743
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3744 while (data->dst_h--) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3745 Uint32 src = (Uint32 )data->src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3746 Uint32 dst = (Uint32 )data->dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3747 int n = data->dst_w;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3748 while (n--) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3749 srcpixel = *src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3750 srcA = (Uint8)(srcpixel >> 24); srcB = (Uint8)(srcpixel >> 16); srcG = (Uint8)(srcpixel >> 8); srcR = (Uint8)srcpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3751 dstpixel = *dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3752 dstR = (Uint8)(dstpixel >> 16); dstG = (Uint8)(dstpixel >> 8); dstB = (Uint8)dstpixel; dstA = 0xFF;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3753 if (flags & (SDL_RENDERCOPY_BLEND\|SDL_RENDERCOPY_ADD)) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3754 /* This goes away if we ever use premultiplied alpha */
1989 5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	3755 if (srcA < 255) {
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	3756 srcR = (srcR * srcA) / 255;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	3757 srcG = (srcG * srcA) / 255;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	3758 srcB = (srcB * srcA) / 255;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	3759 }
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	3760 }
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	3761 switch (flags & (SDL_RENDERCOPY_MASK\|SDL_RENDERCOPY_BLEND\|SDL_RENDERCOPY_ADD\|SDL_RENDERCOPY_MOD)) {
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	3762 case SDL_RENDERCOPY_MASK:
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	3763 if (srcA) {
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	3764 dstR = srcR;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	3765 dstG = srcG;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	3766 dstB = srcB;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	3767 }
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	3768 break;
1985 8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3769 case SDL_RENDERCOPY_BLEND:
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3770 dstR = srcR + ((255 - srcA) * dstR) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3771 dstG = srcG + ((255 - srcA) * dstG) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3772 dstB = srcB + ((255 - srcA) * dstB) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3773 break;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3774 case SDL_RENDERCOPY_ADD:
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3775 dstR = srcR + dstR; if (dstR > 255) dstR = 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3776 dstG = srcG + dstG; if (dstG > 255) dstG = 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3777 dstB = srcB + dstB; if (dstB > 255) dstB = 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3778 break;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3779 case SDL_RENDERCOPY_MOD:
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3780 dstR = (srcR * dstR) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3781 dstG = (srcG * dstG) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3782 dstB = (srcB * dstB) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3783 break;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3784 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3785 dstpixel = ((Uint32)dstR << 16) \| ((Uint32)dstG << 8) \| dstB;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3786 *dst = dstpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3787 ++src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3788 ++dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3789 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3790 data->src += data->src_pitch;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3791 data->dst += data->dst_pitch;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3792 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3793 return 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3794 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3795
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3796 int SDL_RenderCopy_ABGR8888_RGB888_Blend_Scale(SDL_RenderCopyData *data)
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3797 {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3798 const int flags = data->flags;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3799 Uint32 srcpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3800 Uint32 srcR, srcG, srcB, srcA;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3801 Uint32 dstpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3802 Uint32 dstR, dstG, dstB, dstA;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3803 int srcy, srcx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3804 int posy, posx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3805 int incy, incx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3806
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3807 srcy = 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3808 posy = 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3809 incy = (data->src_h << 16) / data->dst_h;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3810 incx = (data->src_w << 16) / data->dst_w;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3811
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3812 while (data->dst_h--) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3813 Uint32 *src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3814 Uint32 dst = (Uint32 )data->dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3815 int n = data->dst_w;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3816 srcx = -1;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3817 posx = 0x10000L;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3818 while (posy >= 0x10000L) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3819 ++srcy;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3820 posy -= 0x10000L;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3821 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3822 while (n--) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3823 if (posx >= 0x10000L) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3824 while (posx >= 0x10000L) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3825 ++srcx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3826 posx -= 0x10000L;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3827 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3828 src = (Uint32 )(data->src + (srcy data->src_pitch) + (srcx * 4));
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3829 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3830 srcpixel = *src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3831 srcA = (Uint8)(srcpixel >> 24); srcB = (Uint8)(srcpixel >> 16); srcG = (Uint8)(srcpixel >> 8); srcR = (Uint8)srcpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3832 dstpixel = *dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3833 dstR = (Uint8)(dstpixel >> 16); dstG = (Uint8)(dstpixel >> 8); dstB = (Uint8)dstpixel; dstA = 0xFF;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3834 if (flags & (SDL_RENDERCOPY_BLEND\|SDL_RENDERCOPY_ADD)) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3835 /* This goes away if we ever use premultiplied alpha */
1989 5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	3836 if (srcA < 255) {
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	3837 srcR = (srcR * srcA) / 255;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	3838 srcG = (srcG * srcA) / 255;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	3839 srcB = (srcB * srcA) / 255;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	3840 }
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	3841 }
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	3842 switch (flags & (SDL_RENDERCOPY_MASK\|SDL_RENDERCOPY_BLEND\|SDL_RENDERCOPY_ADD\|SDL_RENDERCOPY_MOD)) {
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	3843 case SDL_RENDERCOPY_MASK:
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	3844 if (srcA) {
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	3845 dstR = srcR;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	3846 dstG = srcG;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	3847 dstB = srcB;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	3848 }
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	3849 break;
1985 8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3850 case SDL_RENDERCOPY_BLEND:
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3851 dstR = srcR + ((255 - srcA) * dstR) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3852 dstG = srcG + ((255 - srcA) * dstG) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3853 dstB = srcB + ((255 - srcA) * dstB) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3854 break;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3855 case SDL_RENDERCOPY_ADD:
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3856 dstR = srcR + dstR; if (dstR > 255) dstR = 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3857 dstG = srcG + dstG; if (dstG > 255) dstG = 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3858 dstB = srcB + dstB; if (dstB > 255) dstB = 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3859 break;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3860 case SDL_RENDERCOPY_MOD:
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3861 dstR = (srcR * dstR) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3862 dstG = (srcG * dstG) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3863 dstB = (srcB * dstB) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3864 break;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3865 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3866 dstpixel = ((Uint32)dstR << 16) \| ((Uint32)dstG << 8) \| dstB;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3867 *dst = dstpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3868 posx += incx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3869 ++dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3870 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3871 posy += incy;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3872 data->dst += data->dst_pitch;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3873 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3874 return 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3875 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3876
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3877 int SDL_RenderCopy_ABGR8888_RGB888_Modulate(SDL_RenderCopyData *data)
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3878 {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3879 const int flags = data->flags;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3880 const Uint32 modulateR = data->r;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3881 const Uint32 modulateG = data->g;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3882 const Uint32 modulateB = data->b;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3883 const Uint32 modulateA = data->a;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3884 Uint32 pixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3885 Uint32 R, G, B, A;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3886
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3887 while (data->dst_h--) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3888 Uint32 src = (Uint32 )data->src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3889 Uint32 dst = (Uint32 )data->dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3890 int n = data->dst_w;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3891 while (n--) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3892 pixel = *src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3893 A = (Uint8)(pixel >> 24); B = (Uint8)(pixel >> 16); G = (Uint8)(pixel >> 8); R = (Uint8)pixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3894 if (flags & SDL_RENDERCOPY_MODULATE_COLOR) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3895 R = (R * modulateR) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3896 G = (G * modulateG) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3897 B = (B * modulateB) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3898 }
1989 5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	3899 if (flags & SDL_RENDERCOPY_MODULATE_ALPHA) {
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	3900 A = (A * modulateA) / 255;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	3901 }
1985 8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3902 pixel = ((Uint32)R << 16) \| ((Uint32)G << 8) \| B;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3903 *dst = pixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3904 ++src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3905 ++dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3906 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3907 data->src += data->src_pitch;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3908 data->dst += data->dst_pitch;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3909 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3910 return 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3911 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3912
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3913 int SDL_RenderCopy_ABGR8888_RGB888_Modulate_Scale(SDL_RenderCopyData *data)
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3914 {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3915 const int flags = data->flags;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3916 const Uint32 modulateR = data->r;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3917 const Uint32 modulateG = data->g;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3918 const Uint32 modulateB = data->b;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3919 const Uint32 modulateA = data->a;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3920 Uint32 pixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3921 Uint32 R, G, B, A;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3922 int srcy, srcx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3923 int posy, posx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3924 int incy, incx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3925
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3926 srcy = 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3927 posy = 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3928 incy = (data->src_h << 16) / data->dst_h;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3929 incx = (data->src_w << 16) / data->dst_w;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3930
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3931 while (data->dst_h--) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3932 Uint32 *src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3933 Uint32 dst = (Uint32 )data->dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3934 int n = data->dst_w;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3935 srcx = -1;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3936 posx = 0x10000L;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3937 while (posy >= 0x10000L) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3938 ++srcy;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3939 posy -= 0x10000L;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3940 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3941 while (n--) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3942 if (posx >= 0x10000L) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3943 while (posx >= 0x10000L) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3944 ++srcx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3945 posx -= 0x10000L;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3946 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3947 src = (Uint32 )(data->src + (srcy data->src_pitch) + (srcx * 4));
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3948 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3949 pixel = *src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3950 A = (Uint8)(pixel >> 24); B = (Uint8)(pixel >> 16); G = (Uint8)(pixel >> 8); R = (Uint8)pixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3951 if (flags & SDL_RENDERCOPY_MODULATE_COLOR) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3952 R = (R * modulateR) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3953 G = (G * modulateG) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3954 B = (B * modulateB) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3955 }
1989 5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	3956 if (flags & SDL_RENDERCOPY_MODULATE_ALPHA) {
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	3957 A = (A * modulateA) / 255;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	3958 }
1985 8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3959 pixel = ((Uint32)R << 16) \| ((Uint32)G << 8) \| B;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3960 *dst = pixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3961 posx += incx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3962 ++dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3963 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3964 posy += incy;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3965 data->dst += data->dst_pitch;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3966 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3967 return 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3968 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3969
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3970 int SDL_RenderCopy_ABGR8888_RGB888_Modulate_Blend(SDL_RenderCopyData *data)
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3971 {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3972 const int flags = data->flags;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3973 const Uint32 modulateR = data->r;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3974 const Uint32 modulateG = data->g;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3975 const Uint32 modulateB = data->b;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3976 const Uint32 modulateA = data->a;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3977 Uint32 srcpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3978 Uint32 srcR, srcG, srcB, srcA;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3979 Uint32 dstpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3980 Uint32 dstR, dstG, dstB, dstA;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3981
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3982 while (data->dst_h--) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3983 Uint32 src = (Uint32 )data->src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3984 Uint32 dst = (Uint32 )data->dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3985 int n = data->dst_w;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3986 while (n--) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3987 srcpixel = *src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3988 srcA = (Uint8)(srcpixel >> 24); srcB = (Uint8)(srcpixel >> 16); srcG = (Uint8)(srcpixel >> 8); srcR = (Uint8)srcpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3989 dstpixel = *dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3990 dstR = (Uint8)(dstpixel >> 16); dstG = (Uint8)(dstpixel >> 8); dstB = (Uint8)dstpixel; dstA = 0xFF;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3991 if (flags & SDL_RENDERCOPY_MODULATE_COLOR) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3992 srcR = (srcR * modulateR) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3993 srcG = (srcG * modulateG) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3994 srcB = (srcB * modulateB) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3995 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3996 if (flags & SDL_RENDERCOPY_MODULATE_ALPHA) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3997 srcA = (srcA * modulateA) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3998 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3999 if (flags & (SDL_RENDERCOPY_BLEND\|SDL_RENDERCOPY_ADD)) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4000 /* This goes away if we ever use premultiplied alpha */
1989 5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	4001 if (srcA < 255) {
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	4002 srcR = (srcR * srcA) / 255;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	4003 srcG = (srcG * srcA) / 255;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	4004 srcB = (srcB * srcA) / 255;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	4005 }
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	4006 }
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	4007 switch (flags & (SDL_RENDERCOPY_MASK\|SDL_RENDERCOPY_BLEND\|SDL_RENDERCOPY_ADD\|SDL_RENDERCOPY_MOD)) {
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	4008 case SDL_RENDERCOPY_MASK:
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	4009 if (srcA) {
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	4010 dstR = srcR;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	4011 dstG = srcG;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	4012 dstB = srcB;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	4013 }
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	4014 break;
1985 8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4015 case SDL_RENDERCOPY_BLEND:
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4016 dstR = srcR + ((255 - srcA) * dstR) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4017 dstG = srcG + ((255 - srcA) * dstG) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4018 dstB = srcB + ((255 - srcA) * dstB) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4019 break;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4020 case SDL_RENDERCOPY_ADD:
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4021 dstR = srcR + dstR; if (dstR > 255) dstR = 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4022 dstG = srcG + dstG; if (dstG > 255) dstG = 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4023 dstB = srcB + dstB; if (dstB > 255) dstB = 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4024 break;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4025 case SDL_RENDERCOPY_MOD:
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4026 dstR = (srcR * dstR) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4027 dstG = (srcG * dstG) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4028 dstB = (srcB * dstB) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4029 break;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4030 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4031 dstpixel = ((Uint32)dstR << 16) \| ((Uint32)dstG << 8) \| dstB;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4032 *dst = dstpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4033 ++src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4034 ++dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4035 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4036 data->src += data->src_pitch;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4037 data->dst += data->dst_pitch;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4038 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4039 return 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4040 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4041
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4042 int SDL_RenderCopy_ABGR8888_RGB888_Modulate_Blend_Scale(SDL_RenderCopyData *data)
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4043 {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4044 const int flags = data->flags;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4045 const Uint32 modulateR = data->r;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4046 const Uint32 modulateG = data->g;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4047 const Uint32 modulateB = data->b;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4048 const Uint32 modulateA = data->a;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4049 Uint32 srcpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4050 Uint32 srcR, srcG, srcB, srcA;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4051 Uint32 dstpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4052 Uint32 dstR, dstG, dstB, dstA;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4053 int srcy, srcx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4054 int posy, posx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4055 int incy, incx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4056
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4057 srcy = 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4058 posy = 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4059 incy = (data->src_h << 16) / data->dst_h;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4060 incx = (data->src_w << 16) / data->dst_w;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4061
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4062 while (data->dst_h--) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4063 Uint32 *src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4064 Uint32 dst = (Uint32 )data->dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4065 int n = data->dst_w;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4066 srcx = -1;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4067 posx = 0x10000L;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4068 while (posy >= 0x10000L) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4069 ++srcy;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4070 posy -= 0x10000L;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4071 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4072 while (n--) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4073 if (posx >= 0x10000L) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4074 while (posx >= 0x10000L) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4075 ++srcx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4076 posx -= 0x10000L;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4077 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4078 src = (Uint32 )(data->src + (srcy data->src_pitch) + (srcx * 4));
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4079 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4080 srcpixel = *src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4081 srcA = (Uint8)(srcpixel >> 24); srcB = (Uint8)(srcpixel >> 16); srcG = (Uint8)(srcpixel >> 8); srcR = (Uint8)srcpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4082 dstpixel = *dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4083 dstR = (Uint8)(dstpixel >> 16); dstG = (Uint8)(dstpixel >> 8); dstB = (Uint8)dstpixel; dstA = 0xFF;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4084 if (flags & SDL_RENDERCOPY_MODULATE_COLOR) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4085 srcR = (srcR * modulateR) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4086 srcG = (srcG * modulateG) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4087 srcB = (srcB * modulateB) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4088 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4089 if (flags & SDL_RENDERCOPY_MODULATE_ALPHA) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4090 srcA = (srcA * modulateA) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4091 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4092 if (flags & (SDL_RENDERCOPY_BLEND\|SDL_RENDERCOPY_ADD)) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4093 /* This goes away if we ever use premultiplied alpha */
1989 5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	4094 if (srcA < 255) {
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	4095 srcR = (srcR * srcA) / 255;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	4096 srcG = (srcG * srcA) / 255;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	4097 srcB = (srcB * srcA) / 255;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	4098 }
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	4099 }
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	4100 switch (flags & (SDL_RENDERCOPY_MASK\|SDL_RENDERCOPY_BLEND\|SDL_RENDERCOPY_ADD\|SDL_RENDERCOPY_MOD)) {
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	4101 case SDL_RENDERCOPY_MASK:
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	4102 if (srcA) {
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	4103 dstR = srcR;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	4104 dstG = srcG;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	4105 dstB = srcB;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	4106 }
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	4107 break;
1985 8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4108 case SDL_RENDERCOPY_BLEND:
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4109 dstR = srcR + ((255 - srcA) * dstR) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4110 dstG = srcG + ((255 - srcA) * dstG) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4111 dstB = srcB + ((255 - srcA) * dstB) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4112 break;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4113 case SDL_RENDERCOPY_ADD:
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4114 dstR = srcR + dstR; if (dstR > 255) dstR = 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4115 dstG = srcG + dstG; if (dstG > 255) dstG = 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4116 dstB = srcB + dstB; if (dstB > 255) dstB = 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4117 break;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4118 case SDL_RENDERCOPY_MOD:
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4119 dstR = (srcR * dstR) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4120 dstG = (srcG * dstG) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4121 dstB = (srcB * dstB) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4122 break;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4123 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4124 dstpixel = ((Uint32)dstR << 16) \| ((Uint32)dstG << 8) \| dstB;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4125 *dst = dstpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4126 posx += incx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4127 ++dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4128 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4129 posy += incy;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4130 data->dst += data->dst_pitch;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4131 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4132 return 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4133 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4134
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4135 int SDL_RenderCopy_ABGR8888_BGR888_Scale(SDL_RenderCopyData *data)
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4136 {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4137 const int flags = data->flags;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4138 Uint32 pixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4139 Uint32 R, G, B, A;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4140 int srcy, srcx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4141 int posy, posx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4142 int incy, incx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4143
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4144 srcy = 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4145 posy = 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4146 incy = (data->src_h << 16) / data->dst_h;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4147 incx = (data->src_w << 16) / data->dst_w;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4148
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4149 while (data->dst_h--) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4150 Uint32 *src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4151 Uint32 dst = (Uint32 )data->dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4152 int n = data->dst_w;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4153 srcx = -1;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4154 posx = 0x10000L;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4155 while (posy >= 0x10000L) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4156 ++srcy;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4157 posy -= 0x10000L;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4158 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4159 while (n--) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4160 if (posx >= 0x10000L) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4161 while (posx >= 0x10000L) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4162 ++srcx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4163 posx -= 0x10000L;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4164 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4165 src = (Uint32 )(data->src + (srcy data->src_pitch) + (srcx * 4));
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4166 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4167 pixel = *src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4168 A = (Uint8)(pixel >> 24); B = (Uint8)(pixel >> 16); G = (Uint8)(pixel >> 8); R = (Uint8)pixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4169 pixel = ((Uint32)B << 16) \| ((Uint32)G << 8) \| R;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4170 *dst = pixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4171 posx += incx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4172 ++dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4173 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4174 posy += incy;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4175 data->dst += data->dst_pitch;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4176 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4177 return 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4178 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4179
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4180 int SDL_RenderCopy_ABGR8888_BGR888_Blend(SDL_RenderCopyData *data)
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4181 {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4182 const int flags = data->flags;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4183 Uint32 srcpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4184 Uint32 srcR, srcG, srcB, srcA;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4185 Uint32 dstpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4186 Uint32 dstR, dstG, dstB, dstA;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4187
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4188 while (data->dst_h--) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4189 Uint32 src = (Uint32 )data->src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4190 Uint32 dst = (Uint32 )data->dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4191 int n = data->dst_w;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4192 while (n--) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4193 srcpixel = *src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4194 srcA = (Uint8)(srcpixel >> 24); srcB = (Uint8)(srcpixel >> 16); srcG = (Uint8)(srcpixel >> 8); srcR = (Uint8)srcpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4195 dstpixel = *dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4196 dstB = (Uint8)(dstpixel >> 16); dstG = (Uint8)(dstpixel >> 8); dstR = (Uint8)dstpixel; dstA = 0xFF;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4197 if (flags & (SDL_RENDERCOPY_BLEND\|SDL_RENDERCOPY_ADD)) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4198 /* This goes away if we ever use premultiplied alpha */
1989 5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	4199 if (srcA < 255) {
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	4200 srcR = (srcR * srcA) / 255;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	4201 srcG = (srcG * srcA) / 255;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	4202 srcB = (srcB * srcA) / 255;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	4203 }
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	4204 }
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	4205 switch (flags & (SDL_RENDERCOPY_MASK\|SDL_RENDERCOPY_BLEND\|SDL_RENDERCOPY_ADD\|SDL_RENDERCOPY_MOD)) {
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	4206 case SDL_RENDERCOPY_MASK:
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	4207 if (srcA) {
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	4208 dstR = srcR;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	4209 dstG = srcG;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	4210 dstB = srcB;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	4211 }
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	4212 break;
1985 8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4213 case SDL_RENDERCOPY_BLEND:
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4214 dstR = srcR + ((255 - srcA) * dstR) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4215 dstG = srcG + ((255 - srcA) * dstG) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4216 dstB = srcB + ((255 - srcA) * dstB) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4217 break;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4218 case SDL_RENDERCOPY_ADD:
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4219 dstR = srcR + dstR; if (dstR > 255) dstR = 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4220 dstG = srcG + dstG; if (dstG > 255) dstG = 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4221 dstB = srcB + dstB; if (dstB > 255) dstB = 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4222 break;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4223 case SDL_RENDERCOPY_MOD:
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4224 dstR = (srcR * dstR) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4225 dstG = (srcG * dstG) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4226 dstB = (srcB * dstB) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4227 break;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4228 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4229 dstpixel = ((Uint32)dstB << 16) \| ((Uint32)dstG << 8) \| dstR;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4230 *dst = dstpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4231 ++src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4232 ++dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4233 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4234 data->src += data->src_pitch;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4235 data->dst += data->dst_pitch;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4236 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4237 return 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4238 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4239
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4240 int SDL_RenderCopy_ABGR8888_BGR888_Blend_Scale(SDL_RenderCopyData *data)
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4241 {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4242 const int flags = data->flags;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4243 Uint32 srcpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4244 Uint32 srcR, srcG, srcB, srcA;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4245 Uint32 dstpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4246 Uint32 dstR, dstG, dstB, dstA;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4247 int srcy, srcx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4248 int posy, posx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4249 int incy, incx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4250
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4251 srcy = 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4252 posy = 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4253 incy = (data->src_h << 16) / data->dst_h;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4254 incx = (data->src_w << 16) / data->dst_w;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4255
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4256 while (data->dst_h--) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4257 Uint32 *src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4258 Uint32 dst = (Uint32 )data->dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4259 int n = data->dst_w;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4260 srcx = -1;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4261 posx = 0x10000L;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4262 while (posy >= 0x10000L) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4263 ++srcy;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4264 posy -= 0x10000L;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4265 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4266 while (n--) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4267 if (posx >= 0x10000L) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4268 while (posx >= 0x10000L) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4269 ++srcx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4270 posx -= 0x10000L;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4271 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4272 src = (Uint32 )(data->src + (srcy data->src_pitch) + (srcx * 4));
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4273 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4274 srcpixel = *src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4275 srcA = (Uint8)(srcpixel >> 24); srcB = (Uint8)(srcpixel >> 16); srcG = (Uint8)(srcpixel >> 8); srcR = (Uint8)srcpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4276 dstpixel = *dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4277 dstB = (Uint8)(dstpixel >> 16); dstG = (Uint8)(dstpixel >> 8); dstR = (Uint8)dstpixel; dstA = 0xFF;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4278 if (flags & (SDL_RENDERCOPY_BLEND\|SDL_RENDERCOPY_ADD)) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4279 /* This goes away if we ever use premultiplied alpha */
1989 5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	4280 if (srcA < 255) {
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	4281 srcR = (srcR * srcA) / 255;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	4282 srcG = (srcG * srcA) / 255;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	4283 srcB = (srcB * srcA) / 255;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	4284 }
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	4285 }
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	4286 switch (flags & (SDL_RENDERCOPY_MASK\|SDL_RENDERCOPY_BLEND\|SDL_RENDERCOPY_ADD\|SDL_RENDERCOPY_MOD)) {
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	4287 case SDL_RENDERCOPY_MASK:
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	4288 if (srcA) {
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	4289 dstR = srcR;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	4290 dstG = srcG;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	4291 dstB = srcB;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	4292 }
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	4293 break;
1985 8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4294 case SDL_RENDERCOPY_BLEND:
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4295 dstR = srcR + ((255 - srcA) * dstR) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4296 dstG = srcG + ((255 - srcA) * dstG) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4297 dstB = srcB + ((255 - srcA) * dstB) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4298 break;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4299 case SDL_RENDERCOPY_ADD:
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4300 dstR = srcR + dstR; if (dstR > 255) dstR = 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4301 dstG = srcG + dstG; if (dstG > 255) dstG = 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4302 dstB = srcB + dstB; if (dstB > 255) dstB = 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4303 break;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4304 case SDL_RENDERCOPY_MOD:
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4305 dstR = (srcR * dstR) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4306 dstG = (srcG * dstG) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4307 dstB = (srcB * dstB) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4308 break;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4309 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4310 dstpixel = ((Uint32)dstB << 16) \| ((Uint32)dstG << 8) \| dstR;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4311 *dst = dstpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4312 posx += incx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4313 ++dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4314 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4315 posy += incy;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4316 data->dst += data->dst_pitch;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4317 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4318 return 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4319 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4320
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4321 int SDL_RenderCopy_ABGR8888_BGR888_Modulate(SDL_RenderCopyData *data)
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4322 {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4323 const int flags = data->flags;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4324 const Uint32 modulateR = data->r;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4325 const Uint32 modulateG = data->g;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4326 const Uint32 modulateB = data->b;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4327 const Uint32 modulateA = data->a;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4328 Uint32 pixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4329 Uint32 R, G, B, A;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4330
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4331 while (data->dst_h--) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4332 Uint32 src = (Uint32 )data->src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4333 Uint32 dst = (Uint32 )data->dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4334 int n = data->dst_w;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4335 while (n--) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4336 pixel = *src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4337 A = (Uint8)(pixel >> 24); B = (Uint8)(pixel >> 16); G = (Uint8)(pixel >> 8); R = (Uint8)pixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4338 if (flags & SDL_RENDERCOPY_MODULATE_COLOR) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4339 R = (R * modulateR) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4340 G = (G * modulateG) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4341 B = (B * modulateB) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4342 }
1989 5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	4343 if (flags & SDL_RENDERCOPY_MODULATE_ALPHA) {
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	4344 A = (A * modulateA) / 255;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	4345 }
1985 8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4346 pixel = ((Uint32)B << 16) \| ((Uint32)G << 8) \| R;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4347 *dst = pixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4348 ++src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4349 ++dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4350 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4351 data->src += data->src_pitch;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4352 data->dst += data->dst_pitch;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4353 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4354 return 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4355 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4356
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4357 int SDL_RenderCopy_ABGR8888_BGR888_Modulate_Scale(SDL_RenderCopyData *data)
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4358 {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4359 const int flags = data->flags;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4360 const Uint32 modulateR = data->r;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4361 const Uint32 modulateG = data->g;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4362 const Uint32 modulateB = data->b;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4363 const Uint32 modulateA = data->a;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4364 Uint32 pixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4365 Uint32 R, G, B, A;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4366 int srcy, srcx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4367 int posy, posx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4368 int incy, incx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4369
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4370 srcy = 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4371 posy = 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4372 incy = (data->src_h << 16) / data->dst_h;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4373 incx = (data->src_w << 16) / data->dst_w;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4374
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4375 while (data->dst_h--) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4376 Uint32 *src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4377 Uint32 dst = (Uint32 )data->dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4378 int n = data->dst_w;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4379 srcx = -1;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4380 posx = 0x10000L;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4381 while (posy >= 0x10000L) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4382 ++srcy;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4383 posy -= 0x10000L;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4384 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4385 while (n--) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4386 if (posx >= 0x10000L) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4387 while (posx >= 0x10000L) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4388 ++srcx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4389 posx -= 0x10000L;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4390 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4391 src = (Uint32 )(data->src + (srcy data->src_pitch) + (srcx * 4));
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4392 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4393 pixel = *src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4394 A = (Uint8)(pixel >> 24); B = (Uint8)(pixel >> 16); G = (Uint8)(pixel >> 8); R = (Uint8)pixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4395 if (flags & SDL_RENDERCOPY_MODULATE_COLOR) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4396 R = (R * modulateR) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4397 G = (G * modulateG) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4398 B = (B * modulateB) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4399 }
1989 5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	4400 if (flags & SDL_RENDERCOPY_MODULATE_ALPHA) {
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	4401 A = (A * modulateA) / 255;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	4402 }
1985 8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4403 pixel = ((Uint32)B << 16) \| ((Uint32)G << 8) \| R;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4404 *dst = pixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4405 posx += incx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4406 ++dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4407 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4408 posy += incy;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4409 data->dst += data->dst_pitch;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4410 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4411 return 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4412 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4413
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4414 int SDL_RenderCopy_ABGR8888_BGR888_Modulate_Blend(SDL_RenderCopyData *data)
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4415 {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4416 const int flags = data->flags;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4417 const Uint32 modulateR = data->r;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4418 const Uint32 modulateG = data->g;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4419 const Uint32 modulateB = data->b;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4420 const Uint32 modulateA = data->a;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4421 Uint32 srcpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4422 Uint32 srcR, srcG, srcB, srcA;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4423 Uint32 dstpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4424 Uint32 dstR, dstG, dstB, dstA;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4425
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4426 while (data->dst_h--) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4427 Uint32 src = (Uint32 )data->src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4428 Uint32 dst = (Uint32 )data->dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4429 int n = data->dst_w;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4430 while (n--) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4431 srcpixel = *src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4432 srcA = (Uint8)(srcpixel >> 24); srcB = (Uint8)(srcpixel >> 16); srcG = (Uint8)(srcpixel >> 8); srcR = (Uint8)srcpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4433 dstpixel = *dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4434 dstB = (Uint8)(dstpixel >> 16); dstG = (Uint8)(dstpixel >> 8); dstR = (Uint8)dstpixel; dstA = 0xFF;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4435 if (flags & SDL_RENDERCOPY_MODULATE_COLOR) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4436 srcR = (srcR * modulateR) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4437 srcG = (srcG * modulateG) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4438 srcB = (srcB * modulateB) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4439 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4440 if (flags & SDL_RENDERCOPY_MODULATE_ALPHA) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4441 srcA = (srcA * modulateA) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4442 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4443 if (flags & (SDL_RENDERCOPY_BLEND\|SDL_RENDERCOPY_ADD)) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4444 /* This goes away if we ever use premultiplied alpha */
1989 5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	4445 if (srcA < 255) {
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	4446 srcR = (srcR * srcA) / 255;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	4447 srcG = (srcG * srcA) / 255;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	4448 srcB = (srcB * srcA) / 255;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	4449 }
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	4450 }
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	4451 switch (flags & (SDL_RENDERCOPY_MASK\|SDL_RENDERCOPY_BLEND\|SDL_RENDERCOPY_ADD\|SDL_RENDERCOPY_MOD)) {
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	4452 case SDL_RENDERCOPY_MASK:
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	4453 if (srcA) {
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	4454 dstR = srcR;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	4455 dstG = srcG;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	4456 dstB = srcB;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	4457 }
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	4458 break;
1985 8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4459 case SDL_RENDERCOPY_BLEND:
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4460 dstR = srcR + ((255 - srcA) * dstR) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4461 dstG = srcG + ((255 - srcA) * dstG) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4462 dstB = srcB + ((255 - srcA) * dstB) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4463 break;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4464 case SDL_RENDERCOPY_ADD:
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4465 dstR = srcR + dstR; if (dstR > 255) dstR = 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4466 dstG = srcG + dstG; if (dstG > 255) dstG = 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4467 dstB = srcB + dstB; if (dstB > 255) dstB = 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4468 break;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4469 case SDL_RENDERCOPY_MOD:
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4470 dstR = (srcR * dstR) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4471 dstG = (srcG * dstG) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4472 dstB = (srcB * dstB) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4473 break;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4474 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4475 dstpixel = ((Uint32)dstB << 16) \| ((Uint32)dstG << 8) \| dstR;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4476 *dst = dstpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4477 ++src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4478 ++dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4479 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4480 data->src += data->src_pitch;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4481 data->dst += data->dst_pitch;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4482 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4483 return 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4484 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4485
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4486 int SDL_RenderCopy_ABGR8888_BGR888_Modulate_Blend_Scale(SDL_RenderCopyData *data)
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4487 {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4488 const int flags = data->flags;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4489 const Uint32 modulateR = data->r;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4490 const Uint32 modulateG = data->g;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4491 const Uint32 modulateB = data->b;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4492 const Uint32 modulateA = data->a;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4493 Uint32 srcpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4494 Uint32 srcR, srcG, srcB, srcA;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4495 Uint32 dstpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4496 Uint32 dstR, dstG, dstB, dstA;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4497 int srcy, srcx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4498 int posy, posx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4499 int incy, incx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4500
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4501 srcy = 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4502 posy = 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4503 incy = (data->src_h << 16) / data->dst_h;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4504 incx = (data->src_w << 16) / data->dst_w;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4505
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4506 while (data->dst_h--) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4507 Uint32 *src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4508 Uint32 dst = (Uint32 )data->dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4509 int n = data->dst_w;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4510 srcx = -1;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4511 posx = 0x10000L;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4512 while (posy >= 0x10000L) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4513 ++srcy;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4514 posy -= 0x10000L;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4515 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4516 while (n--) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4517 if (posx >= 0x10000L) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4518 while (posx >= 0x10000L) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4519 ++srcx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4520 posx -= 0x10000L;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4521 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4522 src = (Uint32 )(data->src + (srcy data->src_pitch) + (srcx * 4));
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4523 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4524 srcpixel = *src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4525 srcA = (Uint8)(srcpixel >> 24); srcB = (Uint8)(srcpixel >> 16); srcG = (Uint8)(srcpixel >> 8); srcR = (Uint8)srcpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4526 dstpixel = *dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4527 dstB = (Uint8)(dstpixel >> 16); dstG = (Uint8)(dstpixel >> 8); dstR = (Uint8)dstpixel; dstA = 0xFF;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4528 if (flags & SDL_RENDERCOPY_MODULATE_COLOR) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4529 srcR = (srcR * modulateR) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4530 srcG = (srcG * modulateG) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4531 srcB = (srcB * modulateB) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4532 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4533 if (flags & SDL_RENDERCOPY_MODULATE_ALPHA) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4534 srcA = (srcA * modulateA) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4535 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4536 if (flags & (SDL_RENDERCOPY_BLEND\|SDL_RENDERCOPY_ADD)) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4537 /* This goes away if we ever use premultiplied alpha */
1989 5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	4538 if (srcA < 255) {
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	4539 srcR = (srcR * srcA) / 255;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	4540 srcG = (srcG * srcA) / 255;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	4541 srcB = (srcB * srcA) / 255;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	4542 }
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	4543 }
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	4544 switch (flags & (SDL_RENDERCOPY_MASK\|SDL_RENDERCOPY_BLEND\|SDL_RENDERCOPY_ADD\|SDL_RENDERCOPY_MOD)) {
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	4545 case SDL_RENDERCOPY_MASK:
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	4546 if (srcA) {
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	4547 dstR = srcR;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	4548 dstG = srcG;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	4549 dstB = srcB;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	4550 }
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	4551 break;
1985 8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4552 case SDL_RENDERCOPY_BLEND:
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4553 dstR = srcR + ((255 - srcA) * dstR) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4554 dstG = srcG + ((255 - srcA) * dstG) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4555 dstB = srcB + ((255 - srcA) * dstB) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4556 break;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4557 case SDL_RENDERCOPY_ADD:
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4558 dstR = srcR + dstR; if (dstR > 255) dstR = 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4559 dstG = srcG + dstG; if (dstG > 255) dstG = 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4560 dstB = srcB + dstB; if (dstB > 255) dstB = 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4561 break;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4562 case SDL_RENDERCOPY_MOD:
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4563 dstR = (srcR * dstR) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4564 dstG = (srcG * dstG) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4565 dstB = (srcB * dstB) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4566 break;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4567 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4568 dstpixel = ((Uint32)dstB << 16) \| ((Uint32)dstG << 8) \| dstR;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4569 *dst = dstpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4570 posx += incx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4571 ++dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4572 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4573 posy += incy;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4574 data->dst += data->dst_pitch;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4575 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4576 return 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4577 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4578
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4579 int SDL_RenderCopy_BGRA8888_RGB888_Scale(SDL_RenderCopyData *data)
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4580 {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4581 const int flags = data->flags;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4582 Uint32 pixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4583 Uint32 R, G, B, A;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4584 int srcy, srcx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4585 int posy, posx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4586 int incy, incx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4587
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4588 srcy = 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4589 posy = 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4590 incy = (data->src_h << 16) / data->dst_h;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4591 incx = (data->src_w << 16) / data->dst_w;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4592
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4593 while (data->dst_h--) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4594 Uint32 *src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4595 Uint32 dst = (Uint32 )data->dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4596 int n = data->dst_w;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4597 srcx = -1;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4598 posx = 0x10000L;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4599 while (posy >= 0x10000L) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4600 ++srcy;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4601 posy -= 0x10000L;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4602 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4603 while (n--) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4604 if (posx >= 0x10000L) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4605 while (posx >= 0x10000L) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4606 ++srcx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4607 posx -= 0x10000L;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4608 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4609 src = (Uint32 )(data->src + (srcy data->src_pitch) + (srcx * 4));
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4610 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4611 pixel = *src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4612 B = (Uint8)(pixel >> 24); G = (Uint8)(pixel >> 16); R = (Uint8)(pixel >> 8); A = (Uint8)pixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4613 pixel = ((Uint32)R << 16) \| ((Uint32)G << 8) \| B;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4614 *dst = pixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4615 posx += incx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4616 ++dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4617 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4618 posy += incy;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4619 data->dst += data->dst_pitch;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4620 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4621 return 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4622 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4623
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4624 int SDL_RenderCopy_BGRA8888_RGB888_Blend(SDL_RenderCopyData *data)
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4625 {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4626 const int flags = data->flags;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4627 Uint32 srcpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4628 Uint32 srcR, srcG, srcB, srcA;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4629 Uint32 dstpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4630 Uint32 dstR, dstG, dstB, dstA;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4631
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4632 while (data->dst_h--) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4633 Uint32 src = (Uint32 )data->src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4634 Uint32 dst = (Uint32 )data->dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4635 int n = data->dst_w;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4636 while (n--) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4637 srcpixel = *src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4638 srcB = (Uint8)(srcpixel >> 24); srcG = (Uint8)(srcpixel >> 16); srcR = (Uint8)(srcpixel >> 8); srcA = (Uint8)srcpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4639 dstpixel = *dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4640 dstR = (Uint8)(dstpixel >> 16); dstG = (Uint8)(dstpixel >> 8); dstB = (Uint8)dstpixel; dstA = 0xFF;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4641 if (flags & (SDL_RENDERCOPY_BLEND\|SDL_RENDERCOPY_ADD)) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4642 /* This goes away if we ever use premultiplied alpha */
1989 5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	4643 if (srcA < 255) {
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	4644 srcR = (srcR * srcA) / 255;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	4645 srcG = (srcG * srcA) / 255;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	4646 srcB = (srcB * srcA) / 255;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	4647 }
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	4648 }
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	4649 switch (flags & (SDL_RENDERCOPY_MASK\|SDL_RENDERCOPY_BLEND\|SDL_RENDERCOPY_ADD\|SDL_RENDERCOPY_MOD)) {
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	4650 case SDL_RENDERCOPY_MASK:
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	4651 if (srcA) {
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	4652 dstR = srcR;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	4653 dstG = srcG;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	4654 dstB = srcB;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	4655 }
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	4656 break;
1985 8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4657 case SDL_RENDERCOPY_BLEND:
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4658 dstR = srcR + ((255 - srcA) * dstR) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4659 dstG = srcG + ((255 - srcA) * dstG) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4660 dstB = srcB + ((255 - srcA) * dstB) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4661 break;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4662 case SDL_RENDERCOPY_ADD:
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4663 dstR = srcR + dstR; if (dstR > 255) dstR = 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4664 dstG = srcG + dstG; if (dstG > 255) dstG = 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4665 dstB = srcB + dstB; if (dstB > 255) dstB = 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4666 break;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4667 case SDL_RENDERCOPY_MOD:
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4668 dstR = (srcR * dstR) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4669 dstG = (srcG * dstG) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4670 dstB = (srcB * dstB) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4671 break;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4672 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4673 dstpixel = ((Uint32)dstR << 16) \| ((Uint32)dstG << 8) \| dstB;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4674 *dst = dstpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4675 ++src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4676 ++dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4677 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4678 data->src += data->src_pitch;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4679 data->dst += data->dst_pitch;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4680 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4681 return 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4682 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4683
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4684 int SDL_RenderCopy_BGRA8888_RGB888_Blend_Scale(SDL_RenderCopyData *data)
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4685 {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4686 const int flags = data->flags;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4687 Uint32 srcpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4688 Uint32 srcR, srcG, srcB, srcA;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4689 Uint32 dstpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4690 Uint32 dstR, dstG, dstB, dstA;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4691 int srcy, srcx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4692 int posy, posx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4693 int incy, incx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4694
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4695 srcy = 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4696 posy = 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4697 incy = (data->src_h << 16) / data->dst_h;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4698 incx = (data->src_w << 16) / data->dst_w;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4699
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4700 while (data->dst_h--) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4701 Uint32 *src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4702 Uint32 dst = (Uint32 )data->dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4703 int n = data->dst_w;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4704 srcx = -1;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4705 posx = 0x10000L;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4706 while (posy >= 0x10000L) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4707 ++srcy;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4708 posy -= 0x10000L;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4709 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4710 while (n--) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4711 if (posx >= 0x10000L) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4712 while (posx >= 0x10000L) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4713 ++srcx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4714 posx -= 0x10000L;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4715 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4716 src = (Uint32 )(data->src + (srcy data->src_pitch) + (srcx * 4));
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4717 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4718 srcpixel = *src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4719 srcB = (Uint8)(srcpixel >> 24); srcG = (Uint8)(srcpixel >> 16); srcR = (Uint8)(srcpixel >> 8); srcA = (Uint8)srcpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4720 dstpixel = *dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4721 dstR = (Uint8)(dstpixel >> 16); dstG = (Uint8)(dstpixel >> 8); dstB = (Uint8)dstpixel; dstA = 0xFF;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4722 if (flags & (SDL_RENDERCOPY_BLEND\|SDL_RENDERCOPY_ADD)) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4723 /* This goes away if we ever use premultiplied alpha */
1989 5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	4724 if (srcA < 255) {
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	4725 srcR = (srcR * srcA) / 255;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	4726 srcG = (srcG * srcA) / 255;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	4727 srcB = (srcB * srcA) / 255;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	4728 }
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	4729 }
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	4730 switch (flags & (SDL_RENDERCOPY_MASK\|SDL_RENDERCOPY_BLEND\|SDL_RENDERCOPY_ADD\|SDL_RENDERCOPY_MOD)) {
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	4731 case SDL_RENDERCOPY_MASK:
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	4732 if (srcA) {
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	4733 dstR = srcR;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	4734 dstG = srcG;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	4735 dstB = srcB;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	4736 }
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	4737 break;
1985 8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4738 case SDL_RENDERCOPY_BLEND:
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4739 dstR = srcR + ((255 - srcA) * dstR) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4740 dstG = srcG + ((255 - srcA) * dstG) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4741 dstB = srcB + ((255 - srcA) * dstB) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4742 break;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4743 case SDL_RENDERCOPY_ADD:
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4744 dstR = srcR + dstR; if (dstR > 255) dstR = 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4745 dstG = srcG + dstG; if (dstG > 255) dstG = 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4746 dstB = srcB + dstB; if (dstB > 255) dstB = 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4747 break;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4748 case SDL_RENDERCOPY_MOD:
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4749 dstR = (srcR * dstR) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4750 dstG = (srcG * dstG) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4751 dstB = (srcB * dstB) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4752 break;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4753 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4754 dstpixel = ((Uint32)dstR << 16) \| ((Uint32)dstG << 8) \| dstB;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4755 *dst = dstpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4756 posx += incx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4757 ++dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4758 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4759 posy += incy;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4760 data->dst += data->dst_pitch;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4761 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4762 return 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4763 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4764
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4765 int SDL_RenderCopy_BGRA8888_RGB888_Modulate(SDL_RenderCopyData *data)
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4766 {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4767 const int flags = data->flags;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4768 const Uint32 modulateR = data->r;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4769 const Uint32 modulateG = data->g;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4770 const Uint32 modulateB = data->b;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4771 const Uint32 modulateA = data->a;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4772 Uint32 pixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4773 Uint32 R, G, B, A;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4774
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4775 while (data->dst_h--) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4776 Uint32 src = (Uint32 )data->src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4777 Uint32 dst = (Uint32 )data->dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4778 int n = data->dst_w;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4779 while (n--) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4780 pixel = *src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4781 B = (Uint8)(pixel >> 24); G = (Uint8)(pixel >> 16); R = (Uint8)(pixel >> 8); A = (Uint8)pixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4782 if (flags & SDL_RENDERCOPY_MODULATE_COLOR) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4783 R = (R * modulateR) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4784 G = (G * modulateG) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4785 B = (B * modulateB) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4786 }
1989 5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	4787 if (flags & SDL_RENDERCOPY_MODULATE_ALPHA) {
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	4788 A = (A * modulateA) / 255;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	4789 }
1985 8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4790 pixel = ((Uint32)R << 16) \| ((Uint32)G << 8) \| B;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4791 *dst = pixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4792 ++src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4793 ++dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4794 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4795 data->src += data->src_pitch;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4796 data->dst += data->dst_pitch;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4797 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4798 return 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4799 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4800
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4801 int SDL_RenderCopy_BGRA8888_RGB888_Modulate_Scale(SDL_RenderCopyData *data)
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4802 {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4803 const int flags = data->flags;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4804 const Uint32 modulateR = data->r;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4805 const Uint32 modulateG = data->g;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4806 const Uint32 modulateB = data->b;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4807 const Uint32 modulateA = data->a;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4808 Uint32 pixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4809 Uint32 R, G, B, A;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4810 int srcy, srcx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4811 int posy, posx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4812 int incy, incx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4813
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4814 srcy = 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4815 posy = 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4816 incy = (data->src_h << 16) / data->dst_h;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4817 incx = (data->src_w << 16) / data->dst_w;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4818
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4819 while (data->dst_h--) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4820 Uint32 *src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4821 Uint32 dst = (Uint32 )data->dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4822 int n = data->dst_w;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4823 srcx = -1;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4824 posx = 0x10000L;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4825 while (posy >= 0x10000L) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4826 ++srcy;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4827 posy -= 0x10000L;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4828 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4829 while (n--) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4830 if (posx >= 0x10000L) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4831 while (posx >= 0x10000L) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4832 ++srcx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4833 posx -= 0x10000L;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4834 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4835 src = (Uint32 )(data->src + (srcy data->src_pitch) + (srcx * 4));
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4836 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4837 pixel = *src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4838 B = (Uint8)(pixel >> 24); G = (Uint8)(pixel >> 16); R = (Uint8)(pixel >> 8); A = (Uint8)pixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4839 if (flags & SDL_RENDERCOPY_MODULATE_COLOR) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4840 R = (R * modulateR) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4841 G = (G * modulateG) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4842 B = (B * modulateB) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4843 }
1989 5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	4844 if (flags & SDL_RENDERCOPY_MODULATE_ALPHA) {
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	4845 A = (A * modulateA) / 255;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	4846 }
1985 8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4847 pixel = ((Uint32)R << 16) \| ((Uint32)G << 8) \| B;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4848 *dst = pixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4849 posx += incx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4850 ++dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4851 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4852 posy += incy;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4853 data->dst += data->dst_pitch;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4854 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4855 return 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4856 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4857
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4858 int SDL_RenderCopy_BGRA8888_RGB888_Modulate_Blend(SDL_RenderCopyData *data)
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4859 {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4860 const int flags = data->flags;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4861 const Uint32 modulateR = data->r;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4862 const Uint32 modulateG = data->g;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4863 const Uint32 modulateB = data->b;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4864 const Uint32 modulateA = data->a;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4865 Uint32 srcpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4866 Uint32 srcR, srcG, srcB, srcA;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4867 Uint32 dstpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4868 Uint32 dstR, dstG, dstB, dstA;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4869
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4870 while (data->dst_h--) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4871 Uint32 src = (Uint32 )data->src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4872 Uint32 dst = (Uint32 )data->dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4873 int n = data->dst_w;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4874 while (n--) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4875 srcpixel = *src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4876 srcB = (Uint8)(srcpixel >> 24); srcG = (Uint8)(srcpixel >> 16); srcR = (Uint8)(srcpixel >> 8); srcA = (Uint8)srcpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4877 dstpixel = *dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4878 dstR = (Uint8)(dstpixel >> 16); dstG = (Uint8)(dstpixel >> 8); dstB = (Uint8)dstpixel; dstA = 0xFF;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4879 if (flags & SDL_RENDERCOPY_MODULATE_COLOR) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4880 srcR = (srcR * modulateR) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4881 srcG = (srcG * modulateG) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4882 srcB = (srcB * modulateB) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4883 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4884 if (flags & SDL_RENDERCOPY_MODULATE_ALPHA) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4885 srcA = (srcA * modulateA) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4886 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4887 if (flags & (SDL_RENDERCOPY_BLEND\|SDL_RENDERCOPY_ADD)) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4888 /* This goes away if we ever use premultiplied alpha */
1989 5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	4889 if (srcA < 255) {
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	4890 srcR = (srcR * srcA) / 255;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	4891 srcG = (srcG * srcA) / 255;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	4892 srcB = (srcB * srcA) / 255;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	4893 }
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	4894 }
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	4895 switch (flags & (SDL_RENDERCOPY_MASK\|SDL_RENDERCOPY_BLEND\|SDL_RENDERCOPY_ADD\|SDL_RENDERCOPY_MOD)) {
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	4896 case SDL_RENDERCOPY_MASK:
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	4897 if (srcA) {
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	4898 dstR = srcR;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	4899 dstG = srcG;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	4900 dstB = srcB;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	4901 }
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	4902 break;
1985 8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4903 case SDL_RENDERCOPY_BLEND:
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4904 dstR = srcR + ((255 - srcA) * dstR) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4905 dstG = srcG + ((255 - srcA) * dstG) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4906 dstB = srcB + ((255 - srcA) * dstB) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4907 break;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4908 case SDL_RENDERCOPY_ADD:
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4909 dstR = srcR + dstR; if (dstR > 255) dstR = 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4910 dstG = srcG + dstG; if (dstG > 255) dstG = 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4911 dstB = srcB + dstB; if (dstB > 255) dstB = 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4912 break;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4913 case SDL_RENDERCOPY_MOD:
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4914 dstR = (srcR * dstR) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4915 dstG = (srcG * dstG) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4916 dstB = (srcB * dstB) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4917 break;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4918 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4919 dstpixel = ((Uint32)dstR << 16) \| ((Uint32)dstG << 8) \| dstB;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4920 *dst = dstpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4921 ++src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4922 ++dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4923 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4924 data->src += data->src_pitch;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4925 data->dst += data->dst_pitch;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4926 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4927 return 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4928 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4929
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4930 int SDL_RenderCopy_BGRA8888_RGB888_Modulate_Blend_Scale(SDL_RenderCopyData *data)
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4931 {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4932 const int flags = data->flags;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4933 const Uint32 modulateR = data->r;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4934 const Uint32 modulateG = data->g;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4935 const Uint32 modulateB = data->b;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4936 const Uint32 modulateA = data->a;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4937 Uint32 srcpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4938 Uint32 srcR, srcG, srcB, srcA;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4939 Uint32 dstpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4940 Uint32 dstR, dstG, dstB, dstA;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4941 int srcy, srcx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4942 int posy, posx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4943 int incy, incx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4944
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4945 srcy = 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4946 posy = 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4947 incy = (data->src_h << 16) / data->dst_h;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4948 incx = (data->src_w << 16) / data->dst_w;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4949
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4950 while (data->dst_h--) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4951 Uint32 *src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4952 Uint32 dst = (Uint32 )data->dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4953 int n = data->dst_w;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4954 srcx = -1;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4955 posx = 0x10000L;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4956 while (posy >= 0x10000L) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4957 ++srcy;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4958 posy -= 0x10000L;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4959 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4960 while (n--) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4961 if (posx >= 0x10000L) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4962 while (posx >= 0x10000L) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4963 ++srcx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4964 posx -= 0x10000L;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4965 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4966 src = (Uint32 )(data->src + (srcy data->src_pitch) + (srcx * 4));
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4967 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4968 srcpixel = *src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4969 srcB = (Uint8)(srcpixel >> 24); srcG = (Uint8)(srcpixel >> 16); srcR = (Uint8)(srcpixel >> 8); srcA = (Uint8)srcpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4970 dstpixel = *dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4971 dstR = (Uint8)(dstpixel >> 16); dstG = (Uint8)(dstpixel >> 8); dstB = (Uint8)dstpixel; dstA = 0xFF;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4972 if (flags & SDL_RENDERCOPY_MODULATE_COLOR) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4973 srcR = (srcR * modulateR) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4974 srcG = (srcG * modulateG) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4975 srcB = (srcB * modulateB) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4976 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4977 if (flags & SDL_RENDERCOPY_MODULATE_ALPHA) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4978 srcA = (srcA * modulateA) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4979 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4980 if (flags & (SDL_RENDERCOPY_BLEND\|SDL_RENDERCOPY_ADD)) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4981 /* This goes away if we ever use premultiplied alpha */
1989 5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	4982 if (srcA < 255) {
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	4983 srcR = (srcR * srcA) / 255;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	4984 srcG = (srcG * srcA) / 255;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	4985 srcB = (srcB * srcA) / 255;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	4986 }
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	4987 }
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	4988 switch (flags & (SDL_RENDERCOPY_MASK\|SDL_RENDERCOPY_BLEND\|SDL_RENDERCOPY_ADD\|SDL_RENDERCOPY_MOD)) {
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	4989 case SDL_RENDERCOPY_MASK:
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	4990 if (srcA) {
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	4991 dstR = srcR;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	4992 dstG = srcG;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	4993 dstB = srcB;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	4994 }
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	4995 break;
1985 8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4996 case SDL_RENDERCOPY_BLEND:
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4997 dstR = srcR + ((255 - srcA) * dstR) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4998 dstG = srcG + ((255 - srcA) * dstG) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4999 dstB = srcB + ((255 - srcA) * dstB) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5000 break;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5001 case SDL_RENDERCOPY_ADD:
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5002 dstR = srcR + dstR; if (dstR > 255) dstR = 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5003 dstG = srcG + dstG; if (dstG > 255) dstG = 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5004 dstB = srcB + dstB; if (dstB > 255) dstB = 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5005 break;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5006 case SDL_RENDERCOPY_MOD:
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5007 dstR = (srcR * dstR) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5008 dstG = (srcG * dstG) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5009 dstB = (srcB * dstB) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5010 break;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5011 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5012 dstpixel = ((Uint32)dstR << 16) \| ((Uint32)dstG << 8) \| dstB;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5013 *dst = dstpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5014 posx += incx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5015 ++dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5016 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5017 posy += incy;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5018 data->dst += data->dst_pitch;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5019 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5020 return 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5021 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5022
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5023 int SDL_RenderCopy_BGRA8888_BGR888_Scale(SDL_RenderCopyData *data)
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5024 {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5025 const int flags = data->flags;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5026 Uint32 pixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5027 Uint32 R, G, B, A;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5028 int srcy, srcx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5029 int posy, posx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5030 int incy, incx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5031
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5032 srcy = 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5033 posy = 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5034 incy = (data->src_h << 16) / data->dst_h;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5035 incx = (data->src_w << 16) / data->dst_w;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5036
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5037 while (data->dst_h--) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5038 Uint32 *src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5039 Uint32 dst = (Uint32 )data->dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5040 int n = data->dst_w;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5041 srcx = -1;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5042 posx = 0x10000L;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5043 while (posy >= 0x10000L) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5044 ++srcy;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5045 posy -= 0x10000L;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5046 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5047 while (n--) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5048 if (posx >= 0x10000L) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5049 while (posx >= 0x10000L) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5050 ++srcx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5051 posx -= 0x10000L;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5052 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5053 src = (Uint32 )(data->src + (srcy data->src_pitch) + (srcx * 4));
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5054 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5055 pixel = *src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5056 B = (Uint8)(pixel >> 24); G = (Uint8)(pixel >> 16); R = (Uint8)(pixel >> 8); A = (Uint8)pixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5057 pixel = ((Uint32)B << 16) \| ((Uint32)G << 8) \| R;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5058 *dst = pixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5059 posx += incx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5060 ++dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5061 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5062 posy += incy;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5063 data->dst += data->dst_pitch;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5064 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5065 return 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5066 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5067
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5068 int SDL_RenderCopy_BGRA8888_BGR888_Blend(SDL_RenderCopyData *data)
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5069 {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5070 const int flags = data->flags;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5071 Uint32 srcpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5072 Uint32 srcR, srcG, srcB, srcA;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5073 Uint32 dstpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5074 Uint32 dstR, dstG, dstB, dstA;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5075
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5076 while (data->dst_h--) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5077 Uint32 src = (Uint32 )data->src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5078 Uint32 dst = (Uint32 )data->dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5079 int n = data->dst_w;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5080 while (n--) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5081 srcpixel = *src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5082 srcB = (Uint8)(srcpixel >> 24); srcG = (Uint8)(srcpixel >> 16); srcR = (Uint8)(srcpixel >> 8); srcA = (Uint8)srcpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5083 dstpixel = *dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5084 dstB = (Uint8)(dstpixel >> 16); dstG = (Uint8)(dstpixel >> 8); dstR = (Uint8)dstpixel; dstA = 0xFF;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5085 if (flags & (SDL_RENDERCOPY_BLEND\|SDL_RENDERCOPY_ADD)) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5086 /* This goes away if we ever use premultiplied alpha */
1989 5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	5087 if (srcA < 255) {
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	5088 srcR = (srcR * srcA) / 255;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	5089 srcG = (srcG * srcA) / 255;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	5090 srcB = (srcB * srcA) / 255;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	5091 }
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	5092 }
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	5093 switch (flags & (SDL_RENDERCOPY_MASK\|SDL_RENDERCOPY_BLEND\|SDL_RENDERCOPY_ADD\|SDL_RENDERCOPY_MOD)) {
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	5094 case SDL_RENDERCOPY_MASK:
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	5095 if (srcA) {
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	5096 dstR = srcR;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	5097 dstG = srcG;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	5098 dstB = srcB;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	5099 }
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	5100 break;
1985 8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5101 case SDL_RENDERCOPY_BLEND:
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5102 dstR = srcR + ((255 - srcA) * dstR) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5103 dstG = srcG + ((255 - srcA) * dstG) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5104 dstB = srcB + ((255 - srcA) * dstB) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5105 break;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5106 case SDL_RENDERCOPY_ADD:
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5107 dstR = srcR + dstR; if (dstR > 255) dstR = 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5108 dstG = srcG + dstG; if (dstG > 255) dstG = 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5109 dstB = srcB + dstB; if (dstB > 255) dstB = 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5110 break;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5111 case SDL_RENDERCOPY_MOD:
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5112 dstR = (srcR * dstR) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5113 dstG = (srcG * dstG) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5114 dstB = (srcB * dstB) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5115 break;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5116 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5117 dstpixel = ((Uint32)dstB << 16) \| ((Uint32)dstG << 8) \| dstR;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5118 *dst = dstpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5119 ++src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5120 ++dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5121 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5122 data->src += data->src_pitch;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5123 data->dst += data->dst_pitch;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5124 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5125 return 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5126 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5127
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5128 int SDL_RenderCopy_BGRA8888_BGR888_Blend_Scale(SDL_RenderCopyData *data)
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5129 {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5130 const int flags = data->flags;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5131 Uint32 srcpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5132 Uint32 srcR, srcG, srcB, srcA;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5133 Uint32 dstpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5134 Uint32 dstR, dstG, dstB, dstA;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5135 int srcy, srcx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5136 int posy, posx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5137 int incy, incx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5138
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5139 srcy = 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5140 posy = 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5141 incy = (data->src_h << 16) / data->dst_h;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5142 incx = (data->src_w << 16) / data->dst_w;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5143
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5144 while (data->dst_h--) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5145 Uint32 *src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5146 Uint32 dst = (Uint32 )data->dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5147 int n = data->dst_w;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5148 srcx = -1;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5149 posx = 0x10000L;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5150 while (posy >= 0x10000L) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5151 ++srcy;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5152 posy -= 0x10000L;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5153 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5154 while (n--) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5155 if (posx >= 0x10000L) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5156 while (posx >= 0x10000L) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5157 ++srcx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5158 posx -= 0x10000L;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5159 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5160 src = (Uint32 )(data->src + (srcy data->src_pitch) + (srcx * 4));
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5161 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5162 srcpixel = *src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5163 srcB = (Uint8)(srcpixel >> 24); srcG = (Uint8)(srcpixel >> 16); srcR = (Uint8)(srcpixel >> 8); srcA = (Uint8)srcpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5164 dstpixel = *dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5165 dstB = (Uint8)(dstpixel >> 16); dstG = (Uint8)(dstpixel >> 8); dstR = (Uint8)dstpixel; dstA = 0xFF;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5166 if (flags & (SDL_RENDERCOPY_BLEND\|SDL_RENDERCOPY_ADD)) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5167 /* This goes away if we ever use premultiplied alpha */
1989 5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	5168 if (srcA < 255) {
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	5169 srcR = (srcR * srcA) / 255;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	5170 srcG = (srcG * srcA) / 255;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	5171 srcB = (srcB * srcA) / 255;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	5172 }
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	5173 }
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	5174 switch (flags & (SDL_RENDERCOPY_MASK\|SDL_RENDERCOPY_BLEND\|SDL_RENDERCOPY_ADD\|SDL_RENDERCOPY_MOD)) {
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	5175 case SDL_RENDERCOPY_MASK:
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	5176 if (srcA) {
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	5177 dstR = srcR;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	5178 dstG = srcG;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	5179 dstB = srcB;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	5180 }
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	5181 break;
1985 8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5182 case SDL_RENDERCOPY_BLEND:
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5183 dstR = srcR + ((255 - srcA) * dstR) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5184 dstG = srcG + ((255 - srcA) * dstG) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5185 dstB = srcB + ((255 - srcA) * dstB) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5186 break;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5187 case SDL_RENDERCOPY_ADD:
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5188 dstR = srcR + dstR; if (dstR > 255) dstR = 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5189 dstG = srcG + dstG; if (dstG > 255) dstG = 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5190 dstB = srcB + dstB; if (dstB > 255) dstB = 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5191 break;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5192 case SDL_RENDERCOPY_MOD:
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5193 dstR = (srcR * dstR) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5194 dstG = (srcG * dstG) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5195 dstB = (srcB * dstB) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5196 break;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5197 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5198 dstpixel = ((Uint32)dstB << 16) \| ((Uint32)dstG << 8) \| dstR;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5199 *dst = dstpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5200 posx += incx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5201 ++dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5202 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5203 posy += incy;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5204 data->dst += data->dst_pitch;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5205 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5206 return 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5207 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5208
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5209 int SDL_RenderCopy_BGRA8888_BGR888_Modulate(SDL_RenderCopyData *data)
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5210 {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5211 const int flags = data->flags;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5212 const Uint32 modulateR = data->r;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5213 const Uint32 modulateG = data->g;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5214 const Uint32 modulateB = data->b;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5215 const Uint32 modulateA = data->a;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5216 Uint32 pixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5217 Uint32 R, G, B, A;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5218
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5219 while (data->dst_h--) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5220 Uint32 src = (Uint32 )data->src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5221 Uint32 dst = (Uint32 )data->dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5222 int n = data->dst_w;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5223 while (n--) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5224 pixel = *src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5225 B = (Uint8)(pixel >> 24); G = (Uint8)(pixel >> 16); R = (Uint8)(pixel >> 8); A = (Uint8)pixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5226 if (flags & SDL_RENDERCOPY_MODULATE_COLOR) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5227 R = (R * modulateR) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5228 G = (G * modulateG) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5229 B = (B * modulateB) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5230 }
1989 5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	5231 if (flags & SDL_RENDERCOPY_MODULATE_ALPHA) {
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	5232 A = (A * modulateA) / 255;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	5233 }
1985 8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5234 pixel = ((Uint32)B << 16) \| ((Uint32)G << 8) \| R;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5235 *dst = pixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5236 ++src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5237 ++dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5238 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5239 data->src += data->src_pitch;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5240 data->dst += data->dst_pitch;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5241 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5242 return 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5243 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5244
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5245 int SDL_RenderCopy_BGRA8888_BGR888_Modulate_Scale(SDL_RenderCopyData *data)
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5246 {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5247 const int flags = data->flags;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5248 const Uint32 modulateR = data->r;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5249 const Uint32 modulateG = data->g;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5250 const Uint32 modulateB = data->b;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5251 const Uint32 modulateA = data->a;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5252 Uint32 pixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5253 Uint32 R, G, B, A;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5254 int srcy, srcx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5255 int posy, posx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5256 int incy, incx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5257
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5258 srcy = 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5259 posy = 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5260 incy = (data->src_h << 16) / data->dst_h;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5261 incx = (data->src_w << 16) / data->dst_w;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5262
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5263 while (data->dst_h--) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5264 Uint32 *src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5265 Uint32 dst = (Uint32 )data->dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5266 int n = data->dst_w;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5267 srcx = -1;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5268 posx = 0x10000L;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5269 while (posy >= 0x10000L) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5270 ++srcy;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5271 posy -= 0x10000L;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5272 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5273 while (n--) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5274 if (posx >= 0x10000L) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5275 while (posx >= 0x10000L) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5276 ++srcx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5277 posx -= 0x10000L;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5278 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5279 src = (Uint32 )(data->src + (srcy data->src_pitch) + (srcx * 4));
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5280 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5281 pixel = *src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5282 B = (Uint8)(pixel >> 24); G = (Uint8)(pixel >> 16); R = (Uint8)(pixel >> 8); A = (Uint8)pixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5283 if (flags & SDL_RENDERCOPY_MODULATE_COLOR) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5284 R = (R * modulateR) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5285 G = (G * modulateG) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5286 B = (B * modulateB) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5287 }
1989 5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	5288 if (flags & SDL_RENDERCOPY_MODULATE_ALPHA) {
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	5289 A = (A * modulateA) / 255;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	5290 }
1985 8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5291 pixel = ((Uint32)B << 16) \| ((Uint32)G << 8) \| R;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5292 *dst = pixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5293 posx += incx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5294 ++dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5295 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5296 posy += incy;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5297 data->dst += data->dst_pitch;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5298 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5299 return 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5300 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5301
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5302 int SDL_RenderCopy_BGRA8888_BGR888_Modulate_Blend(SDL_RenderCopyData *data)
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5303 {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5304 const int flags = data->flags;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5305 const Uint32 modulateR = data->r;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5306 const Uint32 modulateG = data->g;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5307 const Uint32 modulateB = data->b;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5308 const Uint32 modulateA = data->a;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5309 Uint32 srcpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5310 Uint32 srcR, srcG, srcB, srcA;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5311 Uint32 dstpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5312 Uint32 dstR, dstG, dstB, dstA;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5313
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5314 while (data->dst_h--) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5315 Uint32 src = (Uint32 )data->src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5316 Uint32 dst = (Uint32 )data->dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5317 int n = data->dst_w;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5318 while (n--) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5319 srcpixel = *src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5320 srcB = (Uint8)(srcpixel >> 24); srcG = (Uint8)(srcpixel >> 16); srcR = (Uint8)(srcpixel >> 8); srcA = (Uint8)srcpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5321 dstpixel = *dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5322 dstB = (Uint8)(dstpixel >> 16); dstG = (Uint8)(dstpixel >> 8); dstR = (Uint8)dstpixel; dstA = 0xFF;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5323 if (flags & SDL_RENDERCOPY_MODULATE_COLOR) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5324 srcR = (srcR * modulateR) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5325 srcG = (srcG * modulateG) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5326 srcB = (srcB * modulateB) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5327 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5328 if (flags & SDL_RENDERCOPY_MODULATE_ALPHA) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5329 srcA = (srcA * modulateA) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5330 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5331 if (flags & (SDL_RENDERCOPY_BLEND\|SDL_RENDERCOPY_ADD)) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5332 /* This goes away if we ever use premultiplied alpha */
1989 5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	5333 if (srcA < 255) {
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	5334 srcR = (srcR * srcA) / 255;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	5335 srcG = (srcG * srcA) / 255;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	5336 srcB = (srcB * srcA) / 255;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	5337 }
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	5338 }
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	5339 switch (flags & (SDL_RENDERCOPY_MASK\|SDL_RENDERCOPY_BLEND\|SDL_RENDERCOPY_ADD\|SDL_RENDERCOPY_MOD)) {
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	5340 case SDL_RENDERCOPY_MASK:
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	5341 if (srcA) {
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	5342 dstR = srcR;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	5343 dstG = srcG;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	5344 dstB = srcB;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	5345 }
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	5346 break;
1985 8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5347 case SDL_RENDERCOPY_BLEND:
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5348 dstR = srcR + ((255 - srcA) * dstR) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5349 dstG = srcG + ((255 - srcA) * dstG) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5350 dstB = srcB + ((255 - srcA) * dstB) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5351 break;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5352 case SDL_RENDERCOPY_ADD:
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5353 dstR = srcR + dstR; if (dstR > 255) dstR = 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5354 dstG = srcG + dstG; if (dstG > 255) dstG = 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5355 dstB = srcB + dstB; if (dstB > 255) dstB = 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5356 break;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5357 case SDL_RENDERCOPY_MOD:
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5358 dstR = (srcR * dstR) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5359 dstG = (srcG * dstG) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5360 dstB = (srcB * dstB) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5361 break;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5362 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5363 dstpixel = ((Uint32)dstB << 16) \| ((Uint32)dstG << 8) \| dstR;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5364 *dst = dstpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5365 ++src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5366 ++dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5367 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5368 data->src += data->src_pitch;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5369 data->dst += data->dst_pitch;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5370 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5371 return 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5372 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5373
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5374 int SDL_RenderCopy_BGRA8888_BGR888_Modulate_Blend_Scale(SDL_RenderCopyData *data)
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5375 {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5376 const int flags = data->flags;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5377 const Uint32 modulateR = data->r;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5378 const Uint32 modulateG = data->g;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5379 const Uint32 modulateB = data->b;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5380 const Uint32 modulateA = data->a;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5381 Uint32 srcpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5382 Uint32 srcR, srcG, srcB, srcA;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5383 Uint32 dstpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5384 Uint32 dstR, dstG, dstB, dstA;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5385 int srcy, srcx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5386 int posy, posx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5387 int incy, incx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5388
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5389 srcy = 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5390 posy = 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5391 incy = (data->src_h << 16) / data->dst_h;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5392 incx = (data->src_w << 16) / data->dst_w;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5393
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5394 while (data->dst_h--) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5395 Uint32 *src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5396 Uint32 dst = (Uint32 )data->dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5397 int n = data->dst_w;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5398 srcx = -1;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5399 posx = 0x10000L;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5400 while (posy >= 0x10000L) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5401 ++srcy;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5402 posy -= 0x10000L;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5403 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5404 while (n--) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5405 if (posx >= 0x10000L) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5406 while (posx >= 0x10000L) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5407 ++srcx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5408 posx -= 0x10000L;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5409 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5410 src = (Uint32 )(data->src + (srcy data->src_pitch) + (srcx * 4));
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5411 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5412 srcpixel = *src;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5413 srcB = (Uint8)(srcpixel >> 24); srcG = (Uint8)(srcpixel >> 16); srcR = (Uint8)(srcpixel >> 8); srcA = (Uint8)srcpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5414 dstpixel = *dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5415 dstB = (Uint8)(dstpixel >> 16); dstG = (Uint8)(dstpixel >> 8); dstR = (Uint8)dstpixel; dstA = 0xFF;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5416 if (flags & SDL_RENDERCOPY_MODULATE_COLOR) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5417 srcR = (srcR * modulateR) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5418 srcG = (srcG * modulateG) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5419 srcB = (srcB * modulateB) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5420 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5421 if (flags & SDL_RENDERCOPY_MODULATE_ALPHA) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5422 srcA = (srcA * modulateA) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5423 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5424 if (flags & (SDL_RENDERCOPY_BLEND\|SDL_RENDERCOPY_ADD)) {
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5425 /* This goes away if we ever use premultiplied alpha */
1989 5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	5426 if (srcA < 255) {
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	5427 srcR = (srcR * srcA) / 255;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	5428 srcG = (srcG * srcA) / 255;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	5429 srcB = (srcB * srcA) / 255;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	5430 }
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	5431 }
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	5432 switch (flags & (SDL_RENDERCOPY_MASK\|SDL_RENDERCOPY_BLEND\|SDL_RENDERCOPY_ADD\|SDL_RENDERCOPY_MOD)) {
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	5433 case SDL_RENDERCOPY_MASK:
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	5434 if (srcA) {
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	5435 dstR = srcR;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	5436 dstG = srcG;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	5437 dstB = srcB;
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	5438 }
5b5f5de5433f Optimized the copy blitters a little bit Sam Lantinga <slouken@libsdl.org> parents: 1985 diff changeset	5439 break;
1985 8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5440 case SDL_RENDERCOPY_BLEND:
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5441 dstR = srcR + ((255 - srcA) * dstR) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5442 dstG = srcG + ((255 - srcA) * dstG) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5443 dstB = srcB + ((255 - srcA) * dstB) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5444 break;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5445 case SDL_RENDERCOPY_ADD:
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5446 dstR = srcR + dstR; if (dstR > 255) dstR = 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5447 dstG = srcG + dstG; if (dstG > 255) dstG = 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5448 dstB = srcB + dstB; if (dstB > 255) dstB = 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5449 break;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5450 case SDL_RENDERCOPY_MOD:
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5451 dstR = (srcR * dstR) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5452 dstG = (srcG * dstG) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5453 dstB = (srcB * dstB) / 255;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5454 break;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5455 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5456 dstpixel = ((Uint32)dstB << 16) \| ((Uint32)dstG << 8) \| dstR;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5457 *dst = dstpixel;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5458 posx += incx;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5459 ++dst;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5460 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5461 posy += incy;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5462 data->dst += data->dst_pitch;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5463 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5464 return 0;
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5465 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5466
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5467 /* INDENT-ON */
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5468
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5469 /* vi: set ts=4 sw=4 expandtab: */

Mercurial > sdl-ios-xcode

annotate src/video/SDL_rendercopy.c @ 2236:741afd8402cf