Mercurial > sdl-ios-xcode

annotate src/video/SDL_rendercopy.c @ 2042:3908e1f808e1

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Fixed bug #292 I might be on crack here. It looks like SDL_ConvertMono() in src/audio/SDL_audiocvt.c adds the left and right channels of a stereo stream together, and clamps the new mono channel if it would overflow. Shouldn't it be dividing by 2 to average the two sample points instead of clamping? Otherwise the mono sample point's volume doubles in the conversion. This would also make the conversion faster, as it replaces two branches per sample frame with a bitwise shift. --ryan.
author Sam Lantinga <slouken@libsdl.org>
date Sun, 24 Sep 2006 15:56:36 +0000
parents 7387e0514595
children
rev   line source
1985
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1 /* DO NOT EDIT! This file is generated by sdlgenblit.pl */
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2 /*
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3 SDL - Simple DirectMedia Layer
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4 Copyright (C) 1997-2006 Sam Lantinga
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5
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6 This library is free software; you can redistribute it and/or
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7 modify it under the terms of the GNU Lesser General Public
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8 License as published by the Free Software Foundation; either
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9 version 2.1 of the License, or (at your option) any later version.
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10
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11 This library is distributed in the hope that it will be useful,
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12 but WITHOUT ANY WARRANTY; without even the implied warranty of
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13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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14 Lesser General Public License for more details.
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15
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16 You should have received a copy of the GNU Lesser General Public
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17 License along with this library; if not, write to the Free Software
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18 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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19
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20 Sam Lantinga
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21 slouken@libsdl.org
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22 */
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23 #include "SDL_config.h"
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24
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25 /* *INDENT-OFF* */
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26
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27 #include "SDL_video.h"
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28 #include "SDL_rendercopy.h"
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29
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30 static struct {
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31 Uint32 src_format;
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32 Uint32 dst_format;
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33 int modMode;
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34 int blendMode;
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35 int scaleMode;
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36 SDL_RenderCopyFunc func;
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37 } SDL_RenderCopyFuncTable[] = {
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38 { SDL_PIXELFORMAT_RGB888, SDL_PIXELFORMAT_RGB888, 0, 0, SDL_TEXTURESCALEMODE_FAST, SDL_RenderCopy_RGB888_RGB888_Scale },
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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 },
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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 },
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41 { SDL_PIXELFORMAT_RGB888, SDL_PIXELFORMAT_RGB888, (SDL_TEXTUREMODULATE_COLOR | SDL_TEXTUREMODULATE_ALPHA), 0, 0, SDL_RenderCopy_RGB888_RGB888_Modulate },
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42 { SDL_PIXELFORMAT_RGB888, SDL_PIXELFORMAT_RGB888, (SDL_TEXTUREMODULATE_COLOR | SDL_TEXTUREMODULATE_ALPHA), 0, SDL_TEXTURESCALEMODE_FAST, SDL_RenderCopy_RGB888_RGB888_Modulate_Scale },
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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 },
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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 },
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45 { SDL_PIXELFORMAT_RGB888, SDL_PIXELFORMAT_BGR888, 0, 0, SDL_TEXTURESCALEMODE_FAST, SDL_RenderCopy_RGB888_BGR888_Scale },
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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 },
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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 },
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48 { SDL_PIXELFORMAT_RGB888, SDL_PIXELFORMAT_BGR888, (SDL_TEXTUREMODULATE_COLOR | SDL_TEXTUREMODULATE_ALPHA), 0, 0, SDL_RenderCopy_RGB888_BGR888_Modulate },
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49 { SDL_PIXELFORMAT_RGB888, SDL_PIXELFORMAT_BGR888, (SDL_TEXTUREMODULATE_COLOR | SDL_TEXTUREMODULATE_ALPHA), 0, SDL_TEXTURESCALEMODE_FAST, SDL_RenderCopy_RGB888_BGR888_Modulate_Scale },
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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 },
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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 },
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52 { SDL_PIXELFORMAT_BGR888, SDL_PIXELFORMAT_RGB888, 0, 0, SDL_TEXTURESCALEMODE_FAST, SDL_RenderCopy_BGR888_RGB888_Scale },
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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 },
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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 },
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55 { SDL_PIXELFORMAT_BGR888, SDL_PIXELFORMAT_RGB888, (SDL_TEXTUREMODULATE_COLOR | SDL_TEXTUREMODULATE_ALPHA), 0, 0, SDL_RenderCopy_BGR888_RGB888_Modulate },
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56 { SDL_PIXELFORMAT_BGR888, SDL_PIXELFORMAT_RGB888, (SDL_TEXTUREMODULATE_COLOR | SDL_TEXTUREMODULATE_ALPHA), 0, SDL_TEXTURESCALEMODE_FAST, SDL_RenderCopy_BGR888_RGB888_Modulate_Scale },
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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 },
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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 },
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59 { SDL_PIXELFORMAT_BGR888, SDL_PIXELFORMAT_BGR888, 0, 0, SDL_TEXTURESCALEMODE_FAST, SDL_RenderCopy_BGR888_BGR888_Scale },
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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 },
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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 },
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62 { SDL_PIXELFORMAT_BGR888, SDL_PIXELFORMAT_BGR888, (SDL_TEXTUREMODULATE_COLOR | SDL_TEXTUREMODULATE_ALPHA), 0, 0, SDL_RenderCopy_BGR888_BGR888_Modulate },
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63 { SDL_PIXELFORMAT_BGR888, SDL_PIXELFORMAT_BGR888, (SDL_TEXTUREMODULATE_COLOR | SDL_TEXTUREMODULATE_ALPHA), 0, SDL_TEXTURESCALEMODE_FAST, SDL_RenderCopy_BGR888_BGR888_Modulate_Scale },
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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 },
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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 },
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66 { SDL_PIXELFORMAT_ARGB8888, SDL_PIXELFORMAT_RGB888, 0, 0, SDL_TEXTURESCALEMODE_FAST, SDL_RenderCopy_ARGB8888_RGB888_Scale },
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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 },
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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 },
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69 { SDL_PIXELFORMAT_ARGB8888, SDL_PIXELFORMAT_RGB888, (SDL_TEXTUREMODULATE_COLOR | SDL_TEXTUREMODULATE_ALPHA), 0, 0, SDL_RenderCopy_ARGB8888_RGB888_Modulate },
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70 { SDL_PIXELFORMAT_ARGB8888, SDL_PIXELFORMAT_RGB888, (SDL_TEXTUREMODULATE_COLOR | SDL_TEXTUREMODULATE_ALPHA), 0, SDL_TEXTURESCALEMODE_FAST, SDL_RenderCopy_ARGB8888_RGB888_Modulate_Scale },
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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 },
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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 },
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73 { SDL_PIXELFORMAT_ARGB8888, SDL_PIXELFORMAT_BGR888, 0, 0, SDL_TEXTURESCALEMODE_FAST, SDL_RenderCopy_ARGB8888_BGR888_Scale },
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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 },
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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 },
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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.
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77 { SDL_PIXELFORMAT_ARGB8888, SDL_PIXELFORMAT_BGR888, (SDL_TEXTUREMODULATE_COLOR | SDL_TEXTUREMODULATE_ALPHA), 0, SDL_TEXTURESCALEMODE_FAST, SDL_RenderCopy_ARGB8888_BGR888_Modulate_Scale },
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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 },
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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.
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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.
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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.
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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.
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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.
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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.
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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: */