sdl-ios-xcode: src/render/software/SDL_render

annotate src/render/software/SDL_render_sw.c @ 5217:b0797947dd1c

You don't need to copy the pixels into the streaming texture's pixel data. This behavior is defined specifically to optimize the UpdateTexture path.

author	Sam Lantinga <slouken@libsdl.org>
date	Sun, 06 Feb 2011 20:56:21 -0800
parents	bb45ecd958d8
children	2178ffe17222

rev	line source
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1 /*
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2 SDL - Simple DirectMedia Layer
3697 f7b03b6838cb Fixed bug #926 Sam Lantinga <slouken@libsdl.org> parents: 3685 diff changeset	3 Copyright (C) 1997-2010 Sam Lantinga
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5 This library is free software; you can redistribute it and/or
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	6 modify it under the terms of the GNU Lesser General Public
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	7 License as published by the Free Software Foundation; either
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	8 version 2.1 of the License, or (at your option) any later version.
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	9
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	10 This library is distributed in the hope that it will be useful,
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	11 but WITHOUT ANY WARRANTY; without even the implied warranty of
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	13 Lesser General Public License for more details.
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	14
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	15 You should have received a copy of the GNU Lesser General Public
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	16 License along with this library; if not, write to the Free Software
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	18
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	19 Sam Lantinga
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	20 slouken@libsdl.org
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	21 */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	22 #include "SDL_config.h"
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	23
5157 fb424691cfc7 Moved the rendering code out to a separate directory in the hope that it can someday be completely decoupled from the rest of the library and be expanded to an awesome 2D on 3D library. Sam Lantinga <slouken@libsdl.org> parents: 5152 diff changeset	24 #include "../SDL_sysrender.h"
fb424691cfc7 Moved the rendering code out to a separate directory in the hope that it can someday be completely decoupled from the rest of the library and be expanded to an awesome 2D on 3D library. Sam Lantinga <slouken@libsdl.org> parents: 5152 diff changeset	25 #include "../../video/SDL_pixels_c.h"
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	26
5166 d72793305335 Making the API simpler, moved the surface drawing functions to the software renderer. Sam Lantinga <slouken@libsdl.org> parents: 5160 diff changeset	27 #include "SDL_draw.h"
d72793305335 Making the API simpler, moved the surface drawing functions to the software renderer. Sam Lantinga <slouken@libsdl.org> parents: 5160 diff changeset	28 #include "SDL_blendfillrect.h"
d72793305335 Making the API simpler, moved the surface drawing functions to the software renderer. Sam Lantinga <slouken@libsdl.org> parents: 5160 diff changeset	29 #include "SDL_blendline.h"
d72793305335 Making the API simpler, moved the surface drawing functions to the software renderer. Sam Lantinga <slouken@libsdl.org> parents: 5160 diff changeset	30 #include "SDL_blendpoint.h"
d72793305335 Making the API simpler, moved the surface drawing functions to the software renderer. Sam Lantinga <slouken@libsdl.org> parents: 5160 diff changeset	31 #include "SDL_drawline.h"
d72793305335 Making the API simpler, moved the surface drawing functions to the software renderer. Sam Lantinga <slouken@libsdl.org> parents: 5160 diff changeset	32 #include "SDL_drawpoint.h"
d72793305335 Making the API simpler, moved the surface drawing functions to the software renderer. Sam Lantinga <slouken@libsdl.org> parents: 5160 diff changeset	33
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	34
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	35 /* SDL surface based renderer implementation */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	36
1918 092bd3a019c5 Starting on the OpenGL renderer... Sam Lantinga <slouken@libsdl.org> parents: 1907 diff changeset	37 static SDL_Renderer SW_CreateRenderer(SDL_Window window, Uint32 flags);
5150 ad50b3db78bd The rendering functions take a context so it's clear what window they're drawing to. This also potentially opens to the door to multi-threaded rendering in the future. Sam Lantinga <slouken@libsdl.org> parents: 5145 diff changeset	38 static void SW_WindowEvent(SDL_Renderer * renderer,
ad50b3db78bd The rendering functions take a context so it's clear what window they're drawing to. This also potentially opens to the door to multi-threaded rendering in the future. Sam Lantinga <slouken@libsdl.org> parents: 5145 diff changeset	39 const SDL_WindowEvent *event);
1918 092bd3a019c5 Starting on the OpenGL renderer... Sam Lantinga <slouken@libsdl.org> parents: 1907 diff changeset	40 static int SW_CreateTexture(SDL_Renderer * renderer, SDL_Texture * texture);
1985 8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: 1972 diff changeset	41 static int SW_SetTextureColorMod(SDL_Renderer * renderer,
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: 1972 diff changeset	42 SDL_Texture * texture);
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: 1972 diff changeset	43 static int SW_SetTextureAlphaMod(SDL_Renderer * renderer,
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: 1972 diff changeset	44 SDL_Texture * texture);
5144 31e7f523ab3d Making the API simpler, texture color and alpha modulation are supported by all renderers. Sam Lantinga <slouken@libsdl.org> parents: 5143 diff changeset	45 static int SW_SetTextureBlendMode(SDL_Renderer * renderer,
31e7f523ab3d Making the API simpler, texture color and alpha modulation are supported by all renderers. Sam Lantinga <slouken@libsdl.org> parents: 5143 diff changeset	46 SDL_Texture * texture);
1985 8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: 1972 diff changeset	47 static int SW_UpdateTexture(SDL_Renderer * renderer, SDL_Texture * texture,
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: 1972 diff changeset	48 const SDL_Rect * rect, const void *pixels,
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: 1972 diff changeset	49 int pitch);
1918 092bd3a019c5 Starting on the OpenGL renderer... Sam Lantinga <slouken@libsdl.org> parents: 1907 diff changeset	50 static int SW_LockTexture(SDL_Renderer * renderer, SDL_Texture * texture,
5159 307ccc9c135e Made it possible to create a texture of any format, even if not supported by the renderer. Sam Lantinga <slouken@libsdl.org> parents: 5157 diff changeset	51 const SDL_Rect * rect, void *pixels, int pitch);
1918 092bd3a019c5 Starting on the OpenGL renderer... Sam Lantinga <slouken@libsdl.org> parents: 1907 diff changeset	52 static void SW_UnlockTexture(SDL_Renderer * renderer, SDL_Texture * texture);
3596 f638ded38b8a Added SDL_RenderClear() as a fast method of clearing the screen to the drawing color. Sam Lantinga <slouken@libsdl.org> parents: 3536 diff changeset	53 static int SW_RenderDrawPoints(SDL_Renderer * renderer,
f638ded38b8a Added SDL_RenderClear() as a fast method of clearing the screen to the drawing color. Sam Lantinga <slouken@libsdl.org> parents: 3536 diff changeset	54 const SDL_Point * points, int count);
f638ded38b8a Added SDL_RenderClear() as a fast method of clearing the screen to the drawing color. Sam Lantinga <slouken@libsdl.org> parents: 3536 diff changeset	55 static int SW_RenderDrawLines(SDL_Renderer * renderer,
f638ded38b8a Added SDL_RenderClear() as a fast method of clearing the screen to the drawing color. Sam Lantinga <slouken@libsdl.org> parents: 3536 diff changeset	56 const SDL_Point * points, int count);
f638ded38b8a Added SDL_RenderClear() as a fast method of clearing the screen to the drawing color. Sam Lantinga <slouken@libsdl.org> parents: 3536 diff changeset	57 static int SW_RenderFillRects(SDL_Renderer * renderer,
f638ded38b8a Added SDL_RenderClear() as a fast method of clearing the screen to the drawing color. Sam Lantinga <slouken@libsdl.org> parents: 3536 diff changeset	58 const SDL_Rect ** rects, int count);
1918 092bd3a019c5 Starting on the OpenGL renderer... Sam Lantinga <slouken@libsdl.org> parents: 1907 diff changeset	59 static int SW_RenderCopy(SDL_Renderer * renderer, SDL_Texture * texture,
1985 8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: 1972 diff changeset	60 const SDL_Rect * srcrect, const SDL_Rect * dstrect);
3427 36cf454ba065 Work in progress on implementation of SDL_RenderReadPixels() and SDL_RenderWritePixels(), code untested. Sam Lantinga <slouken@libsdl.org> parents: 3053 diff changeset	61 static int SW_RenderReadPixels(SDL_Renderer * renderer, const SDL_Rect * rect,
3435 9f62f47d989b You can specify the format for pixel data in SDL_RenderReadPixels() and SDL_RenderWritePixels() Sam Lantinga <slouken@libsdl.org> parents: 3427 diff changeset	62 Uint32 format, void * pixels, int pitch);
1918 092bd3a019c5 Starting on the OpenGL renderer... Sam Lantinga <slouken@libsdl.org> parents: 1907 diff changeset	63 static void SW_RenderPresent(SDL_Renderer * renderer);
092bd3a019c5 Starting on the OpenGL renderer... Sam Lantinga <slouken@libsdl.org> parents: 1907 diff changeset	64 static void SW_DestroyTexture(SDL_Renderer * renderer, SDL_Texture * texture);
092bd3a019c5 Starting on the OpenGL renderer... Sam Lantinga <slouken@libsdl.org> parents: 1907 diff changeset	65 static void SW_DestroyRenderer(SDL_Renderer * renderer);
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	66
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	67
1918 092bd3a019c5 Starting on the OpenGL renderer... Sam Lantinga <slouken@libsdl.org> parents: 1907 diff changeset	68 SDL_RenderDriver SW_RenderDriver = {
092bd3a019c5 Starting on the OpenGL renderer... Sam Lantinga <slouken@libsdl.org> parents: 1907 diff changeset	69 SW_CreateRenderer,
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	70 {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	71 "software",
5169 4d39eeaad00b Added a way to get a framebuffer interface for a window, and also a way to create a software renderer for an arbitrary surface. Sam Lantinga <slouken@libsdl.org> parents: 5166 diff changeset	72 0,
5159 307ccc9c135e Made it possible to create a texture of any format, even if not supported by the renderer. Sam Lantinga <slouken@libsdl.org> parents: 5157 diff changeset	73 8,
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	74 {
1965 a788656ca29a SDL constants are all uppercase. Sam Lantinga <slouken@libsdl.org> parents: 1930 diff changeset	75 SDL_PIXELFORMAT_RGB555,
a788656ca29a SDL constants are all uppercase. Sam Lantinga <slouken@libsdl.org> parents: 1930 diff changeset	76 SDL_PIXELFORMAT_RGB565,
a788656ca29a SDL constants are all uppercase. Sam Lantinga <slouken@libsdl.org> parents: 1930 diff changeset	77 SDL_PIXELFORMAT_RGB888,
a788656ca29a SDL constants are all uppercase. Sam Lantinga <slouken@libsdl.org> parents: 1930 diff changeset	78 SDL_PIXELFORMAT_BGR888,
a788656ca29a SDL constants are all uppercase. Sam Lantinga <slouken@libsdl.org> parents: 1930 diff changeset	79 SDL_PIXELFORMAT_ARGB8888,
a788656ca29a SDL constants are all uppercase. Sam Lantinga <slouken@libsdl.org> parents: 1930 diff changeset	80 SDL_PIXELFORMAT_RGBA8888,
a788656ca29a SDL constants are all uppercase. Sam Lantinga <slouken@libsdl.org> parents: 1930 diff changeset	81 SDL_PIXELFORMAT_ABGR8888,
5159 307ccc9c135e Made it possible to create a texture of any format, even if not supported by the renderer. Sam Lantinga <slouken@libsdl.org> parents: 5157 diff changeset	82 SDL_PIXELFORMAT_BGRA8888
307ccc9c135e Made it possible to create a texture of any format, even if not supported by the renderer. Sam Lantinga <slouken@libsdl.org> parents: 5157 diff changeset	83 },
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	84 0,
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	85 0}
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	86 };
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	87
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	88 typedef struct
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	89 {
1972 a0e278364188 Fixed bug recreating OpenGL textures on window resize Sam Lantinga <slouken@libsdl.org> parents: 1971 diff changeset	90 SDL_bool updateSize;
5169 4d39eeaad00b Added a way to get a framebuffer interface for a window, and also a way to create a software renderer for an arbitrary surface. Sam Lantinga <slouken@libsdl.org> parents: 5166 diff changeset	91 SDL_Surface *surface;
1918 092bd3a019c5 Starting on the OpenGL renderer... Sam Lantinga <slouken@libsdl.org> parents: 1907 diff changeset	92 } SW_RenderData;
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	93
1907 06c27a737b7a Streamlined the API a bit and optimized the software renderer. Sam Lantinga <slouken@libsdl.org> parents: 1897 diff changeset	94
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	95 SDL_Renderer *
5169 4d39eeaad00b Added a way to get a framebuffer interface for a window, and also a way to create a software renderer for an arbitrary surface. Sam Lantinga <slouken@libsdl.org> parents: 5166 diff changeset	96 SW_CreateRendererForSurface(SDL_Surface * surface)
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	97 {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	98 SDL_Renderer *renderer;
1918 092bd3a019c5 Starting on the OpenGL renderer... Sam Lantinga <slouken@libsdl.org> parents: 1907 diff changeset	99 SW_RenderData *data;
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	100
5169 4d39eeaad00b Added a way to get a framebuffer interface for a window, and also a way to create a software renderer for an arbitrary surface. Sam Lantinga <slouken@libsdl.org> parents: 5166 diff changeset	101 if (!surface) {
4d39eeaad00b Added a way to get a framebuffer interface for a window, and also a way to create a software renderer for an arbitrary surface. Sam Lantinga <slouken@libsdl.org> parents: 5166 diff changeset	102 SDL_SetError("Can't create renderer for NULL surface");
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	103 return NULL;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	104 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	105
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	106 renderer = (SDL_Renderer ) SDL_calloc(1, sizeof(renderer));
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	107 if (!renderer) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	108 SDL_OutOfMemory();
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	109 return NULL;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	110 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	111
1920 8a162bfdc838 Convert SDL_malloc to SDL_calloc if appropriate, slightly faster on operating systems which map the zero page for memory allocations. Sam Lantinga <slouken@libsdl.org> parents: 1918 diff changeset	112 data = (SW_RenderData ) SDL_calloc(1, sizeof(data));
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	113 if (!data) {
1918 092bd3a019c5 Starting on the OpenGL renderer... Sam Lantinga <slouken@libsdl.org> parents: 1907 diff changeset	114 SW_DestroyRenderer(renderer);
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	115 SDL_OutOfMemory();
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	116 return NULL;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	117 }
5169 4d39eeaad00b Added a way to get a framebuffer interface for a window, and also a way to create a software renderer for an arbitrary surface. Sam Lantinga <slouken@libsdl.org> parents: 5166 diff changeset	118 data->surface = surface;
4d39eeaad00b Added a way to get a framebuffer interface for a window, and also a way to create a software renderer for an arbitrary surface. Sam Lantinga <slouken@libsdl.org> parents: 5166 diff changeset	119
5150 ad50b3db78bd The rendering functions take a context so it's clear what window they're drawing to. This also potentially opens to the door to multi-threaded rendering in the future. Sam Lantinga <slouken@libsdl.org> parents: 5145 diff changeset	120 renderer->WindowEvent = SW_WindowEvent;
5157 fb424691cfc7 Moved the rendering code out to a separate directory in the hope that it can someday be completely decoupled from the rest of the library and be expanded to an awesome 2D on 3D library. Sam Lantinga <slouken@libsdl.org> parents: 5152 diff changeset	121 renderer->CreateTexture = SW_CreateTexture;
fb424691cfc7 Moved the rendering code out to a separate directory in the hope that it can someday be completely decoupled from the rest of the library and be expanded to an awesome 2D on 3D library. Sam Lantinga <slouken@libsdl.org> parents: 5152 diff changeset	122 renderer->SetTextureColorMod = SW_SetTextureColorMod;
fb424691cfc7 Moved the rendering code out to a separate directory in the hope that it can someday be completely decoupled from the rest of the library and be expanded to an awesome 2D on 3D library. Sam Lantinga <slouken@libsdl.org> parents: 5152 diff changeset	123 renderer->SetTextureAlphaMod = SW_SetTextureAlphaMod;
fb424691cfc7 Moved the rendering code out to a separate directory in the hope that it can someday be completely decoupled from the rest of the library and be expanded to an awesome 2D on 3D library. Sam Lantinga <slouken@libsdl.org> parents: 5152 diff changeset	124 renderer->SetTextureBlendMode = SW_SetTextureBlendMode;
fb424691cfc7 Moved the rendering code out to a separate directory in the hope that it can someday be completely decoupled from the rest of the library and be expanded to an awesome 2D on 3D library. Sam Lantinga <slouken@libsdl.org> parents: 5152 diff changeset	125 renderer->UpdateTexture = SW_UpdateTexture;
fb424691cfc7 Moved the rendering code out to a separate directory in the hope that it can someday be completely decoupled from the rest of the library and be expanded to an awesome 2D on 3D library. Sam Lantinga <slouken@libsdl.org> parents: 5152 diff changeset	126 renderer->LockTexture = SW_LockTexture;
fb424691cfc7 Moved the rendering code out to a separate directory in the hope that it can someday be completely decoupled from the rest of the library and be expanded to an awesome 2D on 3D library. Sam Lantinga <slouken@libsdl.org> parents: 5152 diff changeset	127 renderer->UnlockTexture = SW_UnlockTexture;
fb424691cfc7 Moved the rendering code out to a separate directory in the hope that it can someday be completely decoupled from the rest of the library and be expanded to an awesome 2D on 3D library. Sam Lantinga <slouken@libsdl.org> parents: 5152 diff changeset	128 renderer->DestroyTexture = SW_DestroyTexture;
3596 f638ded38b8a Added SDL_RenderClear() as a fast method of clearing the screen to the drawing color. Sam Lantinga <slouken@libsdl.org> parents: 3536 diff changeset	129 renderer->RenderDrawPoints = SW_RenderDrawPoints;
f638ded38b8a Added SDL_RenderClear() as a fast method of clearing the screen to the drawing color. Sam Lantinga <slouken@libsdl.org> parents: 3536 diff changeset	130 renderer->RenderDrawLines = SW_RenderDrawLines;
f638ded38b8a Added SDL_RenderClear() as a fast method of clearing the screen to the drawing color. Sam Lantinga <slouken@libsdl.org> parents: 3536 diff changeset	131 renderer->RenderFillRects = SW_RenderFillRects;
1918 092bd3a019c5 Starting on the OpenGL renderer... Sam Lantinga <slouken@libsdl.org> parents: 1907 diff changeset	132 renderer->RenderCopy = SW_RenderCopy;
3427 36cf454ba065 Work in progress on implementation of SDL_RenderReadPixels() and SDL_RenderWritePixels(), code untested. Sam Lantinga <slouken@libsdl.org> parents: 3053 diff changeset	133 renderer->RenderReadPixels = SW_RenderReadPixels;
1918 092bd3a019c5 Starting on the OpenGL renderer... Sam Lantinga <slouken@libsdl.org> parents: 1907 diff changeset	134 renderer->RenderPresent = SW_RenderPresent;
092bd3a019c5 Starting on the OpenGL renderer... Sam Lantinga <slouken@libsdl.org> parents: 1907 diff changeset	135 renderer->DestroyRenderer = SW_DestroyRenderer;
5157 fb424691cfc7 Moved the rendering code out to a separate directory in the hope that it can someday be completely decoupled from the rest of the library and be expanded to an awesome 2D on 3D library. Sam Lantinga <slouken@libsdl.org> parents: 5152 diff changeset	136 renderer->info = SW_RenderDriver.info;
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	137 renderer->driverdata = data;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	138
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	139 return renderer;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	140 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	141
5169 4d39eeaad00b Added a way to get a framebuffer interface for a window, and also a way to create a software renderer for an arbitrary surface. Sam Lantinga <slouken@libsdl.org> parents: 5166 diff changeset	142 SDL_Renderer *
4d39eeaad00b Added a way to get a framebuffer interface for a window, and also a way to create a software renderer for an arbitrary surface. Sam Lantinga <slouken@libsdl.org> parents: 5166 diff changeset	143 SW_CreateRenderer(SDL_Window * window, Uint32 flags)
4d39eeaad00b Added a way to get a framebuffer interface for a window, and also a way to create a software renderer for an arbitrary surface. Sam Lantinga <slouken@libsdl.org> parents: 5166 diff changeset	144 {
4d39eeaad00b Added a way to get a framebuffer interface for a window, and also a way to create a software renderer for an arbitrary surface. Sam Lantinga <slouken@libsdl.org> parents: 5166 diff changeset	145 SDL_Surface *surface;
4d39eeaad00b Added a way to get a framebuffer interface for a window, and also a way to create a software renderer for an arbitrary surface. Sam Lantinga <slouken@libsdl.org> parents: 5166 diff changeset	146
4d39eeaad00b Added a way to get a framebuffer interface for a window, and also a way to create a software renderer for an arbitrary surface. Sam Lantinga <slouken@libsdl.org> parents: 5166 diff changeset	147 surface = SDL_GetWindowSurface(window);
4d39eeaad00b Added a way to get a framebuffer interface for a window, and also a way to create a software renderer for an arbitrary surface. Sam Lantinga <slouken@libsdl.org> parents: 5166 diff changeset	148 if (!surface) {
4d39eeaad00b Added a way to get a framebuffer interface for a window, and also a way to create a software renderer for an arbitrary surface. Sam Lantinga <slouken@libsdl.org> parents: 5166 diff changeset	149 return NULL;
4d39eeaad00b Added a way to get a framebuffer interface for a window, and also a way to create a software renderer for an arbitrary surface. Sam Lantinga <slouken@libsdl.org> parents: 5166 diff changeset	150 }
4d39eeaad00b Added a way to get a framebuffer interface for a window, and also a way to create a software renderer for an arbitrary surface. Sam Lantinga <slouken@libsdl.org> parents: 5166 diff changeset	151 return SW_CreateRendererForSurface(surface);
4d39eeaad00b Added a way to get a framebuffer interface for a window, and also a way to create a software renderer for an arbitrary surface. Sam Lantinga <slouken@libsdl.org> parents: 5166 diff changeset	152 }
4d39eeaad00b Added a way to get a framebuffer interface for a window, and also a way to create a software renderer for an arbitrary surface. Sam Lantinga <slouken@libsdl.org> parents: 5166 diff changeset	153
4d39eeaad00b Added a way to get a framebuffer interface for a window, and also a way to create a software renderer for an arbitrary surface. Sam Lantinga <slouken@libsdl.org> parents: 5166 diff changeset	154 static SDL_Surface *
1970 db3ba6c0d0df Allow the render context to do necessary work when the video mode changes. Sam Lantinga <slouken@libsdl.org> parents: 1965 diff changeset	155 SW_ActivateRenderer(SDL_Renderer * renderer)
db3ba6c0d0df Allow the render context to do necessary work when the video mode changes. Sam Lantinga <slouken@libsdl.org> parents: 1965 diff changeset	156 {
db3ba6c0d0df Allow the render context to do necessary work when the video mode changes. Sam Lantinga <slouken@libsdl.org> parents: 1965 diff changeset	157 SW_RenderData data = (SW_RenderData ) renderer->driverdata;
3685 64ce267332c6 Switched from SDL_WindowID and SDL_TextureID to SDL_Window* and SDL_Texture* for code simplicity and improved performance. Sam Lantinga <slouken@libsdl.org> parents: 3599 diff changeset	158 SDL_Window *window = renderer->window;
1970 db3ba6c0d0df Allow the render context to do necessary work when the video mode changes. Sam Lantinga <slouken@libsdl.org> parents: 1965 diff changeset	159
1972 a0e278364188 Fixed bug recreating OpenGL textures on window resize Sam Lantinga <slouken@libsdl.org> parents: 1971 diff changeset	160 if (data->updateSize) {
5169 4d39eeaad00b Added a way to get a framebuffer interface for a window, and also a way to create a software renderer for an arbitrary surface. Sam Lantinga <slouken@libsdl.org> parents: 5166 diff changeset	161 data->surface = SDL_GetWindowSurface(window);
4d39eeaad00b Added a way to get a framebuffer interface for a window, and also a way to create a software renderer for an arbitrary surface. Sam Lantinga <slouken@libsdl.org> parents: 5166 diff changeset	162 data->updateSize = SDL_FALSE;
1972 a0e278364188 Fixed bug recreating OpenGL textures on window resize Sam Lantinga <slouken@libsdl.org> parents: 1971 diff changeset	163 }
5169 4d39eeaad00b Added a way to get a framebuffer interface for a window, and also a way to create a software renderer for an arbitrary surface. Sam Lantinga <slouken@libsdl.org> parents: 5166 diff changeset	164 return data->surface;
1970 db3ba6c0d0df Allow the render context to do necessary work when the video mode changes. Sam Lantinga <slouken@libsdl.org> parents: 1965 diff changeset	165 }
db3ba6c0d0df Allow the render context to do necessary work when the video mode changes. Sam Lantinga <slouken@libsdl.org> parents: 1965 diff changeset	166
5150 ad50b3db78bd The rendering functions take a context so it's clear what window they're drawing to. This also potentially opens to the door to multi-threaded rendering in the future. Sam Lantinga <slouken@libsdl.org> parents: 5145 diff changeset	167 static void
ad50b3db78bd The rendering functions take a context so it's clear what window they're drawing to. This also potentially opens to the door to multi-threaded rendering in the future. Sam Lantinga <slouken@libsdl.org> parents: 5145 diff changeset	168 SW_WindowEvent(SDL_Renderer * renderer, const SDL_WindowEvent *event)
1970 db3ba6c0d0df Allow the render context to do necessary work when the video mode changes. Sam Lantinga <slouken@libsdl.org> parents: 1965 diff changeset	169 {
db3ba6c0d0df Allow the render context to do necessary work when the video mode changes. Sam Lantinga <slouken@libsdl.org> parents: 1965 diff changeset	170 SW_RenderData data = (SW_RenderData ) renderer->driverdata;
db3ba6c0d0df Allow the render context to do necessary work when the video mode changes. Sam Lantinga <slouken@libsdl.org> parents: 1965 diff changeset	171
5150 ad50b3db78bd The rendering functions take a context so it's clear what window they're drawing to. This also potentially opens to the door to multi-threaded rendering in the future. Sam Lantinga <slouken@libsdl.org> parents: 5145 diff changeset	172 if (event->event == SDL_WINDOWEVENT_RESIZED) {
ad50b3db78bd The rendering functions take a context so it's clear what window they're drawing to. This also potentially opens to the door to multi-threaded rendering in the future. Sam Lantinga <slouken@libsdl.org> parents: 5145 diff changeset	173 data->updateSize = SDL_TRUE;
1970 db3ba6c0d0df Allow the render context to do necessary work when the video mode changes. Sam Lantinga <slouken@libsdl.org> parents: 1965 diff changeset	174 }
db3ba6c0d0df Allow the render context to do necessary work when the video mode changes. Sam Lantinga <slouken@libsdl.org> parents: 1965 diff changeset	175 }
db3ba6c0d0df Allow the render context to do necessary work when the video mode changes. Sam Lantinga <slouken@libsdl.org> parents: 1965 diff changeset	176
db3ba6c0d0df Allow the render context to do necessary work when the video mode changes. Sam Lantinga <slouken@libsdl.org> parents: 1965 diff changeset	177 static int
1918 092bd3a019c5 Starting on the OpenGL renderer... Sam Lantinga <slouken@libsdl.org> parents: 1907 diff changeset	178 SW_CreateTexture(SDL_Renderer * renderer, SDL_Texture * texture)
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	179 {
5159 307ccc9c135e Made it possible to create a texture of any format, even if not supported by the renderer. Sam Lantinga <slouken@libsdl.org> parents: 5157 diff changeset	180 int bpp;
307ccc9c135e Made it possible to create a texture of any format, even if not supported by the renderer. Sam Lantinga <slouken@libsdl.org> parents: 5157 diff changeset	181 Uint32 Rmask, Gmask, Bmask, Amask;
307ccc9c135e Made it possible to create a texture of any format, even if not supported by the renderer. Sam Lantinga <slouken@libsdl.org> parents: 5157 diff changeset	182
307ccc9c135e Made it possible to create a texture of any format, even if not supported by the renderer. Sam Lantinga <slouken@libsdl.org> parents: 5157 diff changeset	183 if (!SDL_PixelFormatEnumToMasks
307ccc9c135e Made it possible to create a texture of any format, even if not supported by the renderer. Sam Lantinga <slouken@libsdl.org> parents: 5157 diff changeset	184 (texture->format, &bpp, &Rmask, &Gmask, &Bmask, &Amask)) {
307ccc9c135e Made it possible to create a texture of any format, even if not supported by the renderer. Sam Lantinga <slouken@libsdl.org> parents: 5157 diff changeset	185 SDL_SetError("Unknown texture format");
307ccc9c135e Made it possible to create a texture of any format, even if not supported by the renderer. Sam Lantinga <slouken@libsdl.org> parents: 5157 diff changeset	186 return -1;
307ccc9c135e Made it possible to create a texture of any format, even if not supported by the renderer. Sam Lantinga <slouken@libsdl.org> parents: 5157 diff changeset	187 }
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	188
5159 307ccc9c135e Made it possible to create a texture of any format, even if not supported by the renderer. Sam Lantinga <slouken@libsdl.org> parents: 5157 diff changeset	189 texture->driverdata =
307ccc9c135e Made it possible to create a texture of any format, even if not supported by the renderer. Sam Lantinga <slouken@libsdl.org> parents: 5157 diff changeset	190 SDL_CreateRGBSurface(0, texture->w, texture->h, bpp, Rmask, Gmask,
307ccc9c135e Made it possible to create a texture of any format, even if not supported by the renderer. Sam Lantinga <slouken@libsdl.org> parents: 5157 diff changeset	191 Bmask, Amask);
307ccc9c135e Made it possible to create a texture of any format, even if not supported by the renderer. Sam Lantinga <slouken@libsdl.org> parents: 5157 diff changeset	192 SDL_SetSurfaceColorMod(texture->driverdata, texture->r, texture->g,
307ccc9c135e Made it possible to create a texture of any format, even if not supported by the renderer. Sam Lantinga <slouken@libsdl.org> parents: 5157 diff changeset	193 texture->b);
307ccc9c135e Made it possible to create a texture of any format, even if not supported by the renderer. Sam Lantinga <slouken@libsdl.org> parents: 5157 diff changeset	194 SDL_SetSurfaceAlphaMod(texture->driverdata, texture->a);
307ccc9c135e Made it possible to create a texture of any format, even if not supported by the renderer. Sam Lantinga <slouken@libsdl.org> parents: 5157 diff changeset	195 SDL_SetSurfaceBlendMode(texture->driverdata, texture->blendMode);
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	196
5159 307ccc9c135e Made it possible to create a texture of any format, even if not supported by the renderer. Sam Lantinga <slouken@libsdl.org> parents: 5157 diff changeset	197 if (texture->access == SDL_TEXTUREACCESS_STATIC) {
307ccc9c135e Made it possible to create a texture of any format, even if not supported by the renderer. Sam Lantinga <slouken@libsdl.org> parents: 5157 diff changeset	198 SDL_SetSurfaceRLE(texture->driverdata, 1);
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	199 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	200
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	201 if (!texture->driverdata) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	202 return -1;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	203 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	204 return 0;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	205 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	206
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	207 static int
1985 8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: 1972 diff changeset	208 SW_SetTextureColorMod(SDL_Renderer * renderer, SDL_Texture * texture)
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: 1972 diff changeset	209 {
2267 c785543d1843 Okay, still some bugs, but everything builds again... Sam Lantinga <slouken@libsdl.org> parents: 2262 diff changeset	210 SDL_Surface surface = (SDL_Surface ) texture->driverdata;
c785543d1843 Okay, still some bugs, but everything builds again... Sam Lantinga <slouken@libsdl.org> parents: 2262 diff changeset	211 return SDL_SetSurfaceColorMod(surface, texture->r, texture->g,
c785543d1843 Okay, still some bugs, but everything builds again... Sam Lantinga <slouken@libsdl.org> parents: 2262 diff changeset	212 texture->b);
1985 8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: 1972 diff changeset	213 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: 1972 diff changeset	214
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: 1972 diff changeset	215 static int
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: 1972 diff changeset	216 SW_SetTextureAlphaMod(SDL_Renderer * renderer, SDL_Texture * texture)
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: 1972 diff changeset	217 {
2267 c785543d1843 Okay, still some bugs, but everything builds again... Sam Lantinga <slouken@libsdl.org> parents: 2262 diff changeset	218 SDL_Surface surface = (SDL_Surface ) texture->driverdata;
c785543d1843 Okay, still some bugs, but everything builds again... Sam Lantinga <slouken@libsdl.org> parents: 2262 diff changeset	219 return SDL_SetSurfaceAlphaMod(surface, texture->a);
1985 8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: 1972 diff changeset	220 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: 1972 diff changeset	221
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: 1972 diff changeset	222 static int
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: 1972 diff changeset	223 SW_SetTextureBlendMode(SDL_Renderer * renderer, SDL_Texture * texture)
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: 1972 diff changeset	224 {
2267 c785543d1843 Okay, still some bugs, but everything builds again... Sam Lantinga <slouken@libsdl.org> parents: 2262 diff changeset	225 SDL_Surface surface = (SDL_Surface ) texture->driverdata;
c785543d1843 Okay, still some bugs, but everything builds again... Sam Lantinga <slouken@libsdl.org> parents: 2262 diff changeset	226 return SDL_SetSurfaceBlendMode(surface, texture->blendMode);
1985 8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: 1972 diff changeset	227 }
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: 1972 diff changeset	228
8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: 1972 diff changeset	229 static int
1918 092bd3a019c5 Starting on the OpenGL renderer... Sam Lantinga <slouken@libsdl.org> parents: 1907 diff changeset	230 SW_UpdateTexture(SDL_Renderer * renderer, SDL_Texture * texture,
092bd3a019c5 Starting on the OpenGL renderer... Sam Lantinga <slouken@libsdl.org> parents: 1907 diff changeset	231 const SDL_Rect * rect, const void *pixels, int pitch)
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	232 {
5159 307ccc9c135e Made it possible to create a texture of any format, even if not supported by the renderer. Sam Lantinga <slouken@libsdl.org> parents: 5157 diff changeset	233 SDL_Surface surface = (SDL_Surface ) texture->driverdata;
307ccc9c135e Made it possible to create a texture of any format, even if not supported by the renderer. Sam Lantinga <slouken@libsdl.org> parents: 5157 diff changeset	234 Uint8 src, dst;
307ccc9c135e Made it possible to create a texture of any format, even if not supported by the renderer. Sam Lantinga <slouken@libsdl.org> parents: 5157 diff changeset	235 int row;
307ccc9c135e Made it possible to create a texture of any format, even if not supported by the renderer. Sam Lantinga <slouken@libsdl.org> parents: 5157 diff changeset	236 size_t length;
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	237
5159 307ccc9c135e Made it possible to create a texture of any format, even if not supported by the renderer. Sam Lantinga <slouken@libsdl.org> parents: 5157 diff changeset	238 src = (Uint8 *) pixels;
307ccc9c135e Made it possible to create a texture of any format, even if not supported by the renderer. Sam Lantinga <slouken@libsdl.org> parents: 5157 diff changeset	239 dst = (Uint8 *) surface->pixels +
307ccc9c135e Made it possible to create a texture of any format, even if not supported by the renderer. Sam Lantinga <slouken@libsdl.org> parents: 5157 diff changeset	240 rect->y * surface->pitch +
307ccc9c135e Made it possible to create a texture of any format, even if not supported by the renderer. Sam Lantinga <slouken@libsdl.org> parents: 5157 diff changeset	241 rect->x * surface->format->BytesPerPixel;
307ccc9c135e Made it possible to create a texture of any format, even if not supported by the renderer. Sam Lantinga <slouken@libsdl.org> parents: 5157 diff changeset	242 length = rect->w * surface->format->BytesPerPixel;
307ccc9c135e Made it possible to create a texture of any format, even if not supported by the renderer. Sam Lantinga <slouken@libsdl.org> parents: 5157 diff changeset	243 for (row = 0; row < rect->h; ++row) {
307ccc9c135e Made it possible to create a texture of any format, even if not supported by the renderer. Sam Lantinga <slouken@libsdl.org> parents: 5157 diff changeset	244 SDL_memcpy(dst, src, length);
307ccc9c135e Made it possible to create a texture of any format, even if not supported by the renderer. Sam Lantinga <slouken@libsdl.org> parents: 5157 diff changeset	245 src += pitch;
307ccc9c135e Made it possible to create a texture of any format, even if not supported by the renderer. Sam Lantinga <slouken@libsdl.org> parents: 5157 diff changeset	246 dst += surface->pitch;
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	247 }
5159 307ccc9c135e Made it possible to create a texture of any format, even if not supported by the renderer. Sam Lantinga <slouken@libsdl.org> parents: 5157 diff changeset	248 return 0;
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	249 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	250
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	251 static int
1918 092bd3a019c5 Starting on the OpenGL renderer... Sam Lantinga <slouken@libsdl.org> parents: 1907 diff changeset	252 SW_LockTexture(SDL_Renderer * renderer, SDL_Texture * texture,
5159 307ccc9c135e Made it possible to create a texture of any format, even if not supported by the renderer. Sam Lantinga <slouken@libsdl.org> parents: 5157 diff changeset	253 const SDL_Rect * rect, void *pixels, int pitch)
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	254 {
5159 307ccc9c135e Made it possible to create a texture of any format, even if not supported by the renderer. Sam Lantinga <slouken@libsdl.org> parents: 5157 diff changeset	255 SDL_Surface surface = (SDL_Surface ) texture->driverdata;
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	256
5159 307ccc9c135e Made it possible to create a texture of any format, even if not supported by the renderer. Sam Lantinga <slouken@libsdl.org> parents: 5157 diff changeset	257 *pixels =
307ccc9c135e Made it possible to create a texture of any format, even if not supported by the renderer. Sam Lantinga <slouken@libsdl.org> parents: 5157 diff changeset	258 (void ) ((Uint8 ) surface->pixels + rect->y * surface->pitch +
307ccc9c135e Made it possible to create a texture of any format, even if not supported by the renderer. Sam Lantinga <slouken@libsdl.org> parents: 5157 diff changeset	259 rect->x * surface->format->BytesPerPixel);
307ccc9c135e Made it possible to create a texture of any format, even if not supported by the renderer. Sam Lantinga <slouken@libsdl.org> parents: 5157 diff changeset	260 *pitch = surface->pitch;
307ccc9c135e Made it possible to create a texture of any format, even if not supported by the renderer. Sam Lantinga <slouken@libsdl.org> parents: 5157 diff changeset	261 return 0;
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	262 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	263
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	264 static void
1918 092bd3a019c5 Starting on the OpenGL renderer... Sam Lantinga <slouken@libsdl.org> parents: 1907 diff changeset	265 SW_UnlockTexture(SDL_Renderer * renderer, SDL_Texture * texture)
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	266 {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	267 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	268
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	269 static int
3596 f638ded38b8a Added SDL_RenderClear() as a fast method of clearing the screen to the drawing color. Sam Lantinga <slouken@libsdl.org> parents: 3536 diff changeset	270 SW_RenderDrawPoints(SDL_Renderer * renderer, const SDL_Point * points,
f638ded38b8a Added SDL_RenderClear() as a fast method of clearing the screen to the drawing color. Sam Lantinga <slouken@libsdl.org> parents: 3536 diff changeset	271 int count)
2901 133601e3b255 Added RenderPiont() API Sam Lantinga <slouken@libsdl.org> parents: 2891 diff changeset	272 {
5169 4d39eeaad00b Added a way to get a framebuffer interface for a window, and also a way to create a software renderer for an arbitrary surface. Sam Lantinga <slouken@libsdl.org> parents: 5166 diff changeset	273 SDL_Surface *surface = SW_ActivateRenderer(renderer);
5150 ad50b3db78bd The rendering functions take a context so it's clear what window they're drawing to. This also potentially opens to the door to multi-threaded rendering in the future. Sam Lantinga <slouken@libsdl.org> parents: 5145 diff changeset	274
5169 4d39eeaad00b Added a way to get a framebuffer interface for a window, and also a way to create a software renderer for an arbitrary surface. Sam Lantinga <slouken@libsdl.org> parents: 5166 diff changeset	275 if (!surface) {
2901 133601e3b255 Added RenderPiont() API Sam Lantinga <slouken@libsdl.org> parents: 2891 diff changeset	276 return -1;
133601e3b255 Added RenderPiont() API Sam Lantinga <slouken@libsdl.org> parents: 2891 diff changeset	277 }
133601e3b255 Added RenderPiont() API Sam Lantinga <slouken@libsdl.org> parents: 2891 diff changeset	278
3536 0267b8b1595c Added interfaces for batch drawing of points, lines and rects: Sam Lantinga <slouken@libsdl.org> parents: 3435 diff changeset	279 /* Draw the points! */
5143 e743b9c3f6d6 Making the API simpler, the blend modes are "none, blend, add" and are supported by all renderers. Sam Lantinga <slouken@libsdl.org> parents: 5141 diff changeset	280 if (renderer->blendMode == SDL_BLENDMODE_NONE) {
5169 4d39eeaad00b Added a way to get a framebuffer interface for a window, and also a way to create a software renderer for an arbitrary surface. Sam Lantinga <slouken@libsdl.org> parents: 5166 diff changeset	281 Uint32 color = SDL_MapRGBA(surface->format,
3536 0267b8b1595c Added interfaces for batch drawing of points, lines and rects: Sam Lantinga <slouken@libsdl.org> parents: 3435 diff changeset	282 renderer->r, renderer->g, renderer->b,
0267b8b1595c Added interfaces for batch drawing of points, lines and rects: Sam Lantinga <slouken@libsdl.org> parents: 3435 diff changeset	283 renderer->a);
0267b8b1595c Added interfaces for batch drawing of points, lines and rects: Sam Lantinga <slouken@libsdl.org> parents: 3435 diff changeset	284
5169 4d39eeaad00b Added a way to get a framebuffer interface for a window, and also a way to create a software renderer for an arbitrary surface. Sam Lantinga <slouken@libsdl.org> parents: 5166 diff changeset	285 return SDL_DrawPoints(surface, points, count, color);
2901 133601e3b255 Added RenderPiont() API Sam Lantinga <slouken@libsdl.org> parents: 2891 diff changeset	286 } else {
5169 4d39eeaad00b Added a way to get a framebuffer interface for a window, and also a way to create a software renderer for an arbitrary surface. Sam Lantinga <slouken@libsdl.org> parents: 5166 diff changeset	287 return SDL_BlendPoints(surface, points, count,
4d39eeaad00b Added a way to get a framebuffer interface for a window, and also a way to create a software renderer for an arbitrary surface. Sam Lantinga <slouken@libsdl.org> parents: 5166 diff changeset	288 renderer->blendMode,
4d39eeaad00b Added a way to get a framebuffer interface for a window, and also a way to create a software renderer for an arbitrary surface. Sam Lantinga <slouken@libsdl.org> parents: 5166 diff changeset	289 renderer->r, renderer->g, renderer->b,
4d39eeaad00b Added a way to get a framebuffer interface for a window, and also a way to create a software renderer for an arbitrary surface. Sam Lantinga <slouken@libsdl.org> parents: 5166 diff changeset	290 renderer->a);
2901 133601e3b255 Added RenderPiont() API Sam Lantinga <slouken@libsdl.org> parents: 2891 diff changeset	291 }
133601e3b255 Added RenderPiont() API Sam Lantinga <slouken@libsdl.org> parents: 2891 diff changeset	292 }
133601e3b255 Added RenderPiont() API Sam Lantinga <slouken@libsdl.org> parents: 2891 diff changeset	293
133601e3b255 Added RenderPiont() API Sam Lantinga <slouken@libsdl.org> parents: 2891 diff changeset	294 static int
3596 f638ded38b8a Added SDL_RenderClear() as a fast method of clearing the screen to the drawing color. Sam Lantinga <slouken@libsdl.org> parents: 3536 diff changeset	295 SW_RenderDrawLines(SDL_Renderer * renderer, const SDL_Point * points,
f638ded38b8a Added SDL_RenderClear() as a fast method of clearing the screen to the drawing color. Sam Lantinga <slouken@libsdl.org> parents: 3536 diff changeset	296 int count)
2888 32e8bbba1e94 Added stubs for software implementations of blending fills and line drawing Sam Lantinga <slouken@libsdl.org> parents: 2884 diff changeset	297 {
5169 4d39eeaad00b Added a way to get a framebuffer interface for a window, and also a way to create a software renderer for an arbitrary surface. Sam Lantinga <slouken@libsdl.org> parents: 5166 diff changeset	298 SDL_Surface *surface = SW_ActivateRenderer(renderer);
5150 ad50b3db78bd The rendering functions take a context so it's clear what window they're drawing to. This also potentially opens to the door to multi-threaded rendering in the future. Sam Lantinga <slouken@libsdl.org> parents: 5145 diff changeset	299
5169 4d39eeaad00b Added a way to get a framebuffer interface for a window, and also a way to create a software renderer for an arbitrary surface. Sam Lantinga <slouken@libsdl.org> parents: 5166 diff changeset	300 if (!surface) {
2888 32e8bbba1e94 Added stubs for software implementations of blending fills and line drawing Sam Lantinga <slouken@libsdl.org> parents: 2884 diff changeset	301 return -1;
32e8bbba1e94 Added stubs for software implementations of blending fills and line drawing Sam Lantinga <slouken@libsdl.org> parents: 2884 diff changeset	302 }
32e8bbba1e94 Added stubs for software implementations of blending fills and line drawing Sam Lantinga <slouken@libsdl.org> parents: 2884 diff changeset	303
5169 4d39eeaad00b Added a way to get a framebuffer interface for a window, and also a way to create a software renderer for an arbitrary surface. Sam Lantinga <slouken@libsdl.org> parents: 5166 diff changeset	304 /* Draw the lines! */
5143 e743b9c3f6d6 Making the API simpler, the blend modes are "none, blend, add" and are supported by all renderers. Sam Lantinga <slouken@libsdl.org> parents: 5141 diff changeset	305 if (renderer->blendMode == SDL_BLENDMODE_NONE) {
5169 4d39eeaad00b Added a way to get a framebuffer interface for a window, and also a way to create a software renderer for an arbitrary surface. Sam Lantinga <slouken@libsdl.org> parents: 5166 diff changeset	306 Uint32 color = SDL_MapRGBA(surface->format,
3536 0267b8b1595c Added interfaces for batch drawing of points, lines and rects: Sam Lantinga <slouken@libsdl.org> parents: 3435 diff changeset	307 renderer->r, renderer->g, renderer->b,
0267b8b1595c Added interfaces for batch drawing of points, lines and rects: Sam Lantinga <slouken@libsdl.org> parents: 3435 diff changeset	308 renderer->a);
0267b8b1595c Added interfaces for batch drawing of points, lines and rects: Sam Lantinga <slouken@libsdl.org> parents: 3435 diff changeset	309
5169 4d39eeaad00b Added a way to get a framebuffer interface for a window, and also a way to create a software renderer for an arbitrary surface. Sam Lantinga <slouken@libsdl.org> parents: 5166 diff changeset	310 return SDL_DrawLines(surface, points, count, color);
2888 32e8bbba1e94 Added stubs for software implementations of blending fills and line drawing Sam Lantinga <slouken@libsdl.org> parents: 2884 diff changeset	311 } else {
5169 4d39eeaad00b Added a way to get a framebuffer interface for a window, and also a way to create a software renderer for an arbitrary surface. Sam Lantinga <slouken@libsdl.org> parents: 5166 diff changeset	312 return SDL_BlendLines(surface, points, count,
4d39eeaad00b Added a way to get a framebuffer interface for a window, and also a way to create a software renderer for an arbitrary surface. Sam Lantinga <slouken@libsdl.org> parents: 5166 diff changeset	313 renderer->blendMode,
4d39eeaad00b Added a way to get a framebuffer interface for a window, and also a way to create a software renderer for an arbitrary surface. Sam Lantinga <slouken@libsdl.org> parents: 5166 diff changeset	314 renderer->r, renderer->g, renderer->b,
4d39eeaad00b Added a way to get a framebuffer interface for a window, and also a way to create a software renderer for an arbitrary surface. Sam Lantinga <slouken@libsdl.org> parents: 5166 diff changeset	315 renderer->a);
2888 32e8bbba1e94 Added stubs for software implementations of blending fills and line drawing Sam Lantinga <slouken@libsdl.org> parents: 2884 diff changeset	316 }
32e8bbba1e94 Added stubs for software implementations of blending fills and line drawing Sam Lantinga <slouken@libsdl.org> parents: 2884 diff changeset	317 }
32e8bbba1e94 Added stubs for software implementations of blending fills and line drawing Sam Lantinga <slouken@libsdl.org> parents: 2884 diff changeset	318
32e8bbba1e94 Added stubs for software implementations of blending fills and line drawing Sam Lantinga <slouken@libsdl.org> parents: 2884 diff changeset	319 static int
3596 f638ded38b8a Added SDL_RenderClear() as a fast method of clearing the screen to the drawing color. Sam Lantinga <slouken@libsdl.org> parents: 3536 diff changeset	320 SW_RenderFillRects(SDL_Renderer * renderer, const SDL_Rect ** rects,
f638ded38b8a Added SDL_RenderClear() as a fast method of clearing the screen to the drawing color. Sam Lantinga <slouken@libsdl.org> parents: 3536 diff changeset	321 int count)
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	322 {
5169 4d39eeaad00b Added a way to get a framebuffer interface for a window, and also a way to create a software renderer for an arbitrary surface. Sam Lantinga <slouken@libsdl.org> parents: 5166 diff changeset	323 SDL_Surface *surface = SW_ActivateRenderer(renderer);
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	324
5169 4d39eeaad00b Added a way to get a framebuffer interface for a window, and also a way to create a software renderer for an arbitrary surface. Sam Lantinga <slouken@libsdl.org> parents: 5166 diff changeset	325 if (!surface) {
5150 ad50b3db78bd The rendering functions take a context so it's clear what window they're drawing to. This also potentially opens to the door to multi-threaded rendering in the future. Sam Lantinga <slouken@libsdl.org> parents: 5145 diff changeset	326 return -1;
ad50b3db78bd The rendering functions take a context so it's clear what window they're drawing to. This also potentially opens to the door to multi-threaded rendering in the future. Sam Lantinga <slouken@libsdl.org> parents: 5145 diff changeset	327 }
ad50b3db78bd The rendering functions take a context so it's clear what window they're drawing to. This also potentially opens to the door to multi-threaded rendering in the future. Sam Lantinga <slouken@libsdl.org> parents: 5145 diff changeset	328
5143 e743b9c3f6d6 Making the API simpler, the blend modes are "none, blend, add" and are supported by all renderers. Sam Lantinga <slouken@libsdl.org> parents: 5141 diff changeset	329 if (renderer->blendMode == SDL_BLENDMODE_NONE) {
5169 4d39eeaad00b Added a way to get a framebuffer interface for a window, and also a way to create a software renderer for an arbitrary surface. Sam Lantinga <slouken@libsdl.org> parents: 5166 diff changeset	330 Uint32 color = SDL_MapRGBA(surface->format,
4d39eeaad00b Added a way to get a framebuffer interface for a window, and also a way to create a software renderer for an arbitrary surface. Sam Lantinga <slouken@libsdl.org> parents: 5166 diff changeset	331 renderer->r, renderer->g, renderer->b,
4d39eeaad00b Added a way to get a framebuffer interface for a window, and also a way to create a software renderer for an arbitrary surface. Sam Lantinga <slouken@libsdl.org> parents: 5166 diff changeset	332 renderer->a);
4d39eeaad00b Added a way to get a framebuffer interface for a window, and also a way to create a software renderer for an arbitrary surface. Sam Lantinga <slouken@libsdl.org> parents: 5166 diff changeset	333 return SDL_FillRects(surface, rects, count, color);
4d39eeaad00b Added a way to get a framebuffer interface for a window, and also a way to create a software renderer for an arbitrary surface. Sam Lantinga <slouken@libsdl.org> parents: 5166 diff changeset	334 } else {
4d39eeaad00b Added a way to get a framebuffer interface for a window, and also a way to create a software renderer for an arbitrary surface. Sam Lantinga <slouken@libsdl.org> parents: 5166 diff changeset	335 return SDL_BlendFillRects(surface, rects, count,
4d39eeaad00b Added a way to get a framebuffer interface for a window, and also a way to create a software renderer for an arbitrary surface. Sam Lantinga <slouken@libsdl.org> parents: 5166 diff changeset	336 renderer->blendMode,
4d39eeaad00b Added a way to get a framebuffer interface for a window, and also a way to create a software renderer for an arbitrary surface. Sam Lantinga <slouken@libsdl.org> parents: 5166 diff changeset	337 renderer->r, renderer->g, renderer->b,
4d39eeaad00b Added a way to get a framebuffer interface for a window, and also a way to create a software renderer for an arbitrary surface. Sam Lantinga <slouken@libsdl.org> parents: 5166 diff changeset	338 renderer->a);
1907 06c27a737b7a Streamlined the API a bit and optimized the software renderer. Sam Lantinga <slouken@libsdl.org> parents: 1897 diff changeset	339 }
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	340 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	341
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	342 static int
1918 092bd3a019c5 Starting on the OpenGL renderer... Sam Lantinga <slouken@libsdl.org> parents: 1907 diff changeset	343 SW_RenderCopy(SDL_Renderer * renderer, SDL_Texture * texture,
1985 8055185ae4ed Added source color and alpha modulation support. Sam Lantinga <slouken@libsdl.org> parents: 1972 diff changeset	344 const SDL_Rect * srcrect, const SDL_Rect * dstrect)
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	345 {
5169 4d39eeaad00b Added a way to get a framebuffer interface for a window, and also a way to create a software renderer for an arbitrary surface. Sam Lantinga <slouken@libsdl.org> parents: 5166 diff changeset	346 SDL_Surface *surface = SW_ActivateRenderer(renderer);
4d39eeaad00b Added a way to get a framebuffer interface for a window, and also a way to create a software renderer for an arbitrary surface. Sam Lantinga <slouken@libsdl.org> parents: 5166 diff changeset	347 SDL_Surface src = (SDL_Surface ) texture->driverdata;
4d39eeaad00b Added a way to get a framebuffer interface for a window, and also a way to create a software renderer for an arbitrary surface. Sam Lantinga <slouken@libsdl.org> parents: 5166 diff changeset	348 SDL_Rect final_rect = *dstrect;
1907 06c27a737b7a Streamlined the API a bit and optimized the software renderer. Sam Lantinga <slouken@libsdl.org> parents: 1897 diff changeset	349
5169 4d39eeaad00b Added a way to get a framebuffer interface for a window, and also a way to create a software renderer for an arbitrary surface. Sam Lantinga <slouken@libsdl.org> parents: 5166 diff changeset	350 if (!surface) {
5150 ad50b3db78bd The rendering functions take a context so it's clear what window they're drawing to. This also potentially opens to the door to multi-threaded rendering in the future. Sam Lantinga <slouken@libsdl.org> parents: 5145 diff changeset	351 return -1;
ad50b3db78bd The rendering functions take a context so it's clear what window they're drawing to. This also potentially opens to the door to multi-threaded rendering in the future. Sam Lantinga <slouken@libsdl.org> parents: 5145 diff changeset	352 }
5169 4d39eeaad00b Added a way to get a framebuffer interface for a window, and also a way to create a software renderer for an arbitrary surface. Sam Lantinga <slouken@libsdl.org> parents: 5166 diff changeset	353 return SDL_BlitSurface(src, srcrect, surface, &final_rect);
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	354 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	355
3427 36cf454ba065 Work in progress on implementation of SDL_RenderReadPixels() and SDL_RenderWritePixels(), code untested. Sam Lantinga <slouken@libsdl.org> parents: 3053 diff changeset	356 static int
36cf454ba065 Work in progress on implementation of SDL_RenderReadPixels() and SDL_RenderWritePixels(), code untested. Sam Lantinga <slouken@libsdl.org> parents: 3053 diff changeset	357 SW_RenderReadPixels(SDL_Renderer * renderer, const SDL_Rect * rect,
3435 9f62f47d989b You can specify the format for pixel data in SDL_RenderReadPixels() and SDL_RenderWritePixels() Sam Lantinga <slouken@libsdl.org> parents: 3427 diff changeset	358 Uint32 format, void * pixels, int pitch)
3427 36cf454ba065 Work in progress on implementation of SDL_RenderReadPixels() and SDL_RenderWritePixels(), code untested. Sam Lantinga <slouken@libsdl.org> parents: 3053 diff changeset	359 {
5169 4d39eeaad00b Added a way to get a framebuffer interface for a window, and also a way to create a software renderer for an arbitrary surface. Sam Lantinga <slouken@libsdl.org> parents: 5166 diff changeset	360 SDL_Surface *surface = SW_ActivateRenderer(renderer);
4d39eeaad00b Added a way to get a framebuffer interface for a window, and also a way to create a software renderer for an arbitrary surface. Sam Lantinga <slouken@libsdl.org> parents: 5166 diff changeset	361 Uint32 src_format;
4d39eeaad00b Added a way to get a framebuffer interface for a window, and also a way to create a software renderer for an arbitrary surface. Sam Lantinga <slouken@libsdl.org> parents: 5166 diff changeset	362 void *src_pixels;
3427 36cf454ba065 Work in progress on implementation of SDL_RenderReadPixels() and SDL_RenderWritePixels(), code untested. Sam Lantinga <slouken@libsdl.org> parents: 3053 diff changeset	363
5169 4d39eeaad00b Added a way to get a framebuffer interface for a window, and also a way to create a software renderer for an arbitrary surface. Sam Lantinga <slouken@libsdl.org> parents: 5166 diff changeset	364 if (!surface) {
5150 ad50b3db78bd The rendering functions take a context so it's clear what window they're drawing to. This also potentially opens to the door to multi-threaded rendering in the future. Sam Lantinga <slouken@libsdl.org> parents: 5145 diff changeset	365 return -1;
ad50b3db78bd The rendering functions take a context so it's clear what window they're drawing to. This also potentially opens to the door to multi-threaded rendering in the future. Sam Lantinga <slouken@libsdl.org> parents: 5145 diff changeset	366 }
ad50b3db78bd The rendering functions take a context so it's clear what window they're drawing to. This also potentially opens to the door to multi-threaded rendering in the future. Sam Lantinga <slouken@libsdl.org> parents: 5145 diff changeset	367
5169 4d39eeaad00b Added a way to get a framebuffer interface for a window, and also a way to create a software renderer for an arbitrary surface. Sam Lantinga <slouken@libsdl.org> parents: 5166 diff changeset	368 if (rect->x < 0 \|\| rect->x+rect->w > surface->w \|\|
4d39eeaad00b Added a way to get a framebuffer interface for a window, and also a way to create a software renderer for an arbitrary surface. Sam Lantinga <slouken@libsdl.org> parents: 5166 diff changeset	369 rect->y < 0 \|\| rect->y+rect->h > surface->h) {
4d39eeaad00b Added a way to get a framebuffer interface for a window, and also a way to create a software renderer for an arbitrary surface. Sam Lantinga <slouken@libsdl.org> parents: 5166 diff changeset	370 SDL_SetError("Tried to read outside of surface bounds");
3427 36cf454ba065 Work in progress on implementation of SDL_RenderReadPixels() and SDL_RenderWritePixels(), code untested. Sam Lantinga <slouken@libsdl.org> parents: 3053 diff changeset	371 return -1;
36cf454ba065 Work in progress on implementation of SDL_RenderReadPixels() and SDL_RenderWritePixels(), code untested. Sam Lantinga <slouken@libsdl.org> parents: 3053 diff changeset	372 }
36cf454ba065 Work in progress on implementation of SDL_RenderReadPixels() and SDL_RenderWritePixels(), code untested. Sam Lantinga <slouken@libsdl.org> parents: 3053 diff changeset	373
5169 4d39eeaad00b Added a way to get a framebuffer interface for a window, and also a way to create a software renderer for an arbitrary surface. Sam Lantinga <slouken@libsdl.org> parents: 5166 diff changeset	374 src_format = SDL_MasksToPixelFormatEnum(
4d39eeaad00b Added a way to get a framebuffer interface for a window, and also a way to create a software renderer for an arbitrary surface. Sam Lantinga <slouken@libsdl.org> parents: 5166 diff changeset	375 surface->format->BitsPerPixel,
4d39eeaad00b Added a way to get a framebuffer interface for a window, and also a way to create a software renderer for an arbitrary surface. Sam Lantinga <slouken@libsdl.org> parents: 5166 diff changeset	376 surface->format->Rmask, surface->format->Gmask,
4d39eeaad00b Added a way to get a framebuffer interface for a window, and also a way to create a software renderer for an arbitrary surface. Sam Lantinga <slouken@libsdl.org> parents: 5166 diff changeset	377 surface->format->Bmask, surface->format->Amask);
3427 36cf454ba065 Work in progress on implementation of SDL_RenderReadPixels() and SDL_RenderWritePixels(), code untested. Sam Lantinga <slouken@libsdl.org> parents: 3053 diff changeset	378
5169 4d39eeaad00b Added a way to get a framebuffer interface for a window, and also a way to create a software renderer for an arbitrary surface. Sam Lantinga <slouken@libsdl.org> parents: 5166 diff changeset	379 src_pixels = (void)((Uint8 ) surface->pixels +
4d39eeaad00b Added a way to get a framebuffer interface for a window, and also a way to create a software renderer for an arbitrary surface. Sam Lantinga <slouken@libsdl.org> parents: 5166 diff changeset	380 rect->y * surface->pitch +
4d39eeaad00b Added a way to get a framebuffer interface for a window, and also a way to create a software renderer for an arbitrary surface. Sam Lantinga <slouken@libsdl.org> parents: 5166 diff changeset	381 rect->x * surface->format->BytesPerPixel);
4d39eeaad00b Added a way to get a framebuffer interface for a window, and also a way to create a software renderer for an arbitrary surface. Sam Lantinga <slouken@libsdl.org> parents: 5166 diff changeset	382
4d39eeaad00b Added a way to get a framebuffer interface for a window, and also a way to create a software renderer for an arbitrary surface. Sam Lantinga <slouken@libsdl.org> parents: 5166 diff changeset	383 return SDL_ConvertPixels(rect->w, rect->h,
4d39eeaad00b Added a way to get a framebuffer interface for a window, and also a way to create a software renderer for an arbitrary surface. Sam Lantinga <slouken@libsdl.org> parents: 5166 diff changeset	384 src_format, src_pixels, surface->pitch,
4d39eeaad00b Added a way to get a framebuffer interface for a window, and also a way to create a software renderer for an arbitrary surface. Sam Lantinga <slouken@libsdl.org> parents: 5166 diff changeset	385 format, pixels, pitch);
3427 36cf454ba065 Work in progress on implementation of SDL_RenderReadPixels() and SDL_RenderWritePixels(), code untested. Sam Lantinga <slouken@libsdl.org> parents: 3053 diff changeset	386 }
36cf454ba065 Work in progress on implementation of SDL_RenderReadPixels() and SDL_RenderWritePixels(), code untested. Sam Lantinga <slouken@libsdl.org> parents: 3053 diff changeset	387
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	388 static void
1918 092bd3a019c5 Starting on the OpenGL renderer... Sam Lantinga <slouken@libsdl.org> parents: 1907 diff changeset	389 SW_RenderPresent(SDL_Renderer * renderer)
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	390 {
1918 092bd3a019c5 Starting on the OpenGL renderer... Sam Lantinga <slouken@libsdl.org> parents: 1907 diff changeset	391 SW_RenderData data = (SW_RenderData ) renderer->driverdata;
5169 4d39eeaad00b Added a way to get a framebuffer interface for a window, and also a way to create a software renderer for an arbitrary surface. Sam Lantinga <slouken@libsdl.org> parents: 5166 diff changeset	392 SDL_Window *window = renderer->window;
5150 ad50b3db78bd The rendering functions take a context so it's clear what window they're drawing to. This also potentially opens to the door to multi-threaded rendering in the future. Sam Lantinga <slouken@libsdl.org> parents: 5145 diff changeset	393
5169 4d39eeaad00b Added a way to get a framebuffer interface for a window, and also a way to create a software renderer for an arbitrary surface. Sam Lantinga <slouken@libsdl.org> parents: 5166 diff changeset	394 if (window) {
4d39eeaad00b Added a way to get a framebuffer interface for a window, and also a way to create a software renderer for an arbitrary surface. Sam Lantinga <slouken@libsdl.org> parents: 5166 diff changeset	395 SDL_UpdateWindowSurface(window);
4d39eeaad00b Added a way to get a framebuffer interface for a window, and also a way to create a software renderer for an arbitrary surface. Sam Lantinga <slouken@libsdl.org> parents: 5166 diff changeset	396 }
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	397 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	398
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	399 static void
1918 092bd3a019c5 Starting on the OpenGL renderer... Sam Lantinga <slouken@libsdl.org> parents: 1907 diff changeset	400 SW_DestroyTexture(SDL_Renderer * renderer, SDL_Texture * texture)
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	401 {
5159 307ccc9c135e Made it possible to create a texture of any format, even if not supported by the renderer. Sam Lantinga <slouken@libsdl.org> parents: 5157 diff changeset	402 SDL_Surface surface = (SDL_Surface ) texture->driverdata;
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	403
5159 307ccc9c135e Made it possible to create a texture of any format, even if not supported by the renderer. Sam Lantinga <slouken@libsdl.org> parents: 5157 diff changeset	404 SDL_FreeSurface(surface);
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	405 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	406
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	407 static void
1918 092bd3a019c5 Starting on the OpenGL renderer... Sam Lantinga <slouken@libsdl.org> parents: 1907 diff changeset	408 SW_DestroyRenderer(SDL_Renderer * renderer)
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	409 {
1918 092bd3a019c5 Starting on the OpenGL renderer... Sam Lantinga <slouken@libsdl.org> parents: 1907 diff changeset	410 SW_RenderData data = (SW_RenderData ) renderer->driverdata;
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	411
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	412 if (data) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	413 SDL_free(data);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	414 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	415 SDL_free(renderer);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	416 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	417
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	418 /* vi: set ts=4 sw=4 expandtab: */

Mercurial > sdl-ios-xcode

annotate src/render/software/SDL_render_sw.c @ 5217:b0797947dd1c