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annotate src/video/SDL_renderer_sw.c @ 1735:8dd28c4ef746 SDL-1.3

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SDL_Rect now uses int for position and size. Added a few more rectangle functions. Added a dirty rectangle list implementation.
author Sam Lantinga <slouken@libsdl.org>
date Mon, 10 Jul 2006 07:34:50 +0000
parents a1ebb17f9c52
children
rev   line source
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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997-2006 Sam Lantinga
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4
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5 This library is free software; you can redistribute it and/or
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6 modify it under the terms of the GNU Lesser General Public
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7 License as published by the Free Software Foundation; either
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8 version 2.1 of the License, or (at your option) any later version.
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9
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10 This library is distributed in the hope that it will be useful,
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11 but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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13 Lesser General Public License for more details.
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14
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15 You should have received a copy of the GNU Lesser General Public
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16 License along with this library; if not, write to the Free Software
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17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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18
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19 Sam Lantinga
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20 slouken@libsdl.org
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21 */
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22 #include "SDL_config.h"
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23
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24 #include "SDL_video.h"
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25 #include "SDL_sysvideo.h"
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26 #include "SDL_rect_c.h"
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27 #include "SDL_yuv_sw_c.h"
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28
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29
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30 /* SDL surface based renderer implementation */
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31
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32 static SDL_Renderer *SDL_SW_CreateRenderer(SDL_Window * window, Uint32 flags);
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33 static int SDL_SW_CreateTexture(SDL_Renderer * renderer,
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34 SDL_Texture * texture);
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35 static int SDL_SW_QueryTexturePixels(SDL_Renderer * renderer,
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36 SDL_Texture * texture, void **pixels,
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37 int *pitch);
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38 static int SDL_SW_SetTexturePalette(SDL_Renderer * renderer,
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39 SDL_Texture * texture,
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40 const SDL_Color * colors, int firstcolor,
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41 int ncolors);
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42 static int SDL_SW_GetTexturePalette(SDL_Renderer * renderer,
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43 SDL_Texture * texture, SDL_Color * colors,
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44 int firstcolor, int ncolors);
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45 static int SDL_SW_UpdateTexture(SDL_Renderer * renderer,
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46 SDL_Texture * texture, const SDL_Rect * rect,
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47 const void *pixels, int pitch);
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48 static int SDL_SW_LockTexture(SDL_Renderer * renderer, SDL_Texture * texture,
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49 const SDL_Rect * rect, int markDirty,
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50 void **pixels, int *pitch);
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51 static void SDL_SW_UnlockTexture(SDL_Renderer * renderer,
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52 SDL_Texture * texture);
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53 static void SDL_SW_DirtyTexture(SDL_Renderer * renderer,
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54 SDL_Texture * texture, int numrects,
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55 const SDL_Rect * rects);
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56 static void SDL_SW_SelectRenderTexture(SDL_Renderer * renderer,
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57 SDL_Texture * texture);
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58 static int SDL_SW_RenderFill(SDL_Renderer * renderer, const SDL_Rect * rect,
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59 Uint32 color);
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60 static int SDL_SW_RenderCopy(SDL_Renderer * renderer, SDL_Texture * texture,
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61 const SDL_Rect * srcrect,
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62 const SDL_Rect * dstrect, int blendMode,
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63 int scaleMode);
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64 static int SDL_SW_RenderReadPixels(SDL_Renderer * renderer,
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65 const SDL_Rect * rect, void *pixels,
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66 int pitch);
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67 static int SDL_SW_RenderWritePixels(SDL_Renderer * renderer,
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68 const SDL_Rect * rect, const void *pixels,
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69 int pitch);
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70 static void SDL_SW_RenderPresent(SDL_Renderer * renderer);
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71 static void SDL_SW_DestroyTexture(SDL_Renderer * renderer,
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72 SDL_Texture * texture);
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73 static void SDL_SW_DestroyRenderer(SDL_Renderer * renderer);
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74
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75
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76 SDL_RenderDriver SDL_SW_RenderDriver = {
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77 SDL_SW_CreateRenderer,
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78 {
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79 "software",
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80 (SDL_Renderer_PresentDiscard |
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81 SDL_Renderer_PresentCopy |
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82 SDL_Renderer_PresentFlip2 |
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83 SDL_Renderer_PresentFlip3 | SDL_Renderer_RenderTarget),
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84 (SDL_TextureBlendMode_None |
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85 SDL_TextureBlendMode_Mask | SDL_TextureBlendMode_Blend),
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86 (SDL_TextureScaleMode_None | SDL_TextureScaleMode_Fast),
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87 11,
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88 {
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89 SDL_PixelFormat_Index8,
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90 SDL_PixelFormat_RGB555,
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91 SDL_PixelFormat_RGB565,
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92 SDL_PixelFormat_RGB888,
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93 SDL_PixelFormat_BGR888,
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94 SDL_PixelFormat_ARGB8888,
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95 SDL_PixelFormat_RGBA8888,
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96 SDL_PixelFormat_ABGR8888,
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97 SDL_PixelFormat_BGRA8888,
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98 SDL_PixelFormat_YUY2,
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99 SDL_PixelFormat_UYVY},
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100 0,
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101 0}
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102 };
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103
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104 typedef struct
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105 {
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106 int current_screen;
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107 SDL_Surface *screens[3];
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108 SDL_Surface *target;
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109 SDL_Renderer *renderer;
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110 SDL_DirtyRectList dirty;
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111 } SDL_SW_RenderData;
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112
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113 SDL_Renderer *
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114 SDL_SW_CreateRenderer(SDL_Window * window, Uint32 flags)
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115 {
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116 SDL_VideoDisplay *display = SDL_GetDisplayFromWindow(window);
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117 SDL_DisplayMode *displayMode = &display->current_mode;
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118 SDL_Renderer *renderer;
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119 SDL_SW_RenderData *data;
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120 int i, n;
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121 int bpp;
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122 Uint32 Rmask, Gmask, Bmask, Amask;
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123
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124 if (!SDL_PixelFormatEnumToMasks
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125 (displayMode->format, &bpp, &Rmask, &Gmask, &Bmask, &Amask)) {
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126 SDL_SetError("Unknown display format");
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127 return NULL;
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128 }
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129
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130 renderer = (SDL_Renderer *) SDL_calloc(1, sizeof(*renderer));
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131 if (!renderer) {
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132 SDL_OutOfMemory();
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133 return NULL;
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134 }
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135
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136 data = (SDL_SW_RenderData *) SDL_malloc(sizeof(*data));
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137 if (!data) {
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138 SDL_SW_DestroyRenderer(renderer);
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139 SDL_OutOfMemory();
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140 return NULL;
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141 }
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142 SDL_zerop(data);
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143
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144 renderer->CreateTexture = SDL_SW_CreateTexture;
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145 renderer->QueryTexturePixels = SDL_SW_QueryTexturePixels;
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146 renderer->SetTexturePalette = SDL_SW_SetTexturePalette;
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147 renderer->GetTexturePalette = SDL_SW_GetTexturePalette;
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148 renderer->UpdateTexture = SDL_SW_UpdateTexture;
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149 renderer->LockTexture = SDL_SW_LockTexture;
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150 renderer->UnlockTexture = SDL_SW_UnlockTexture;
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151 renderer->DirtyTexture = SDL_SW_DirtyTexture;
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152 renderer->SelectRenderTexture = SDL_SW_SelectRenderTexture;
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153 renderer->RenderFill = SDL_SW_RenderFill;
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154 renderer->RenderCopy = SDL_SW_RenderCopy;
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155 renderer->RenderReadPixels = SDL_SW_RenderReadPixels;
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156 renderer->RenderWritePixels = SDL_SW_RenderWritePixels;
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157 renderer->RenderPresent = SDL_SW_RenderPresent;
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158 renderer->DestroyTexture = SDL_SW_DestroyTexture;
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159 renderer->DestroyRenderer = SDL_SW_DestroyRenderer;
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160 renderer->info = SDL_SW_RenderDriver.info;
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161 renderer->window = window->id;
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162 renderer->driverdata = data;
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163
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164 renderer->info.flags = SDL_Renderer_RenderTarget;
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165
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166 if (flags & SDL_Renderer_PresentFlip2) {
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167 renderer->info.flags |= SDL_Renderer_PresentFlip2;
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168 n = 2;
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169 } else if (flags & SDL_Renderer_PresentFlip3) {
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170 renderer->info.flags |= SDL_Renderer_PresentFlip3;
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171 n = 3;
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172 } else {
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173 renderer->info.flags |= SDL_Renderer_PresentCopy;
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174 n = 1;
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175 }
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176 for (i = 0; i < n; ++i) {
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177 data->screens[i] =
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178 SDL_CreateRGBSurface(0, window->w, window->h, bpp, Rmask, Gmask,
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179 Bmask, Amask);
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180 if (!data->screens[i]) {
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181 SDL_SW_DestroyRenderer(renderer);
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182 return NULL;
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183 }
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184 SDL_SetSurfacePalette(data->screens[i], display->palette);
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185 }
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186 data->current_screen = 0;
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187 data->target = data->screens[0];
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188
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189 /* Find a render driver that we can use to display data */
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190 for (i = 0; i < display->num_render_drivers; ++i) {
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191 SDL_RenderDriver *driver = &display->render_drivers[i];
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192 if (driver->info.name != SDL_SW_RenderDriver.info.name) {
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193 data->renderer =
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194 driver->CreateRenderer(window, SDL_Renderer_PresentDiscard);
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195 if (data->renderer) {
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196 break;
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197 }
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198 }
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199 }
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200 if (i == display->num_render_drivers) {
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201 SDL_SW_DestroyRenderer(renderer);
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202 SDL_SetError("Couldn't find display render driver");
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203 return NULL;
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204 }
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205 return renderer;
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206 }
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207
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208 static int
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209 SDL_SW_CreateTexture(SDL_Renderer * renderer, SDL_Texture * texture)
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210 {
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211 if (SDL_ISPIXELFORMAT_FOURCC(texture->format)) {
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212 if (texture->access == SDL_TextureAccess_Render) {
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213 SDL_SetError("Rendering to YUV format textures is not supported");
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214 return -1;
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215 }
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216 texture->driverdata = SDL_SW_CreateYUVTexture(texture);
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217 } else {
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diff changeset
218 int bpp;
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219 Uint32 Rmask, Gmask, Bmask, Amask;
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diff changeset
220
1684
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diff changeset
221 if (!SDL_PixelFormatEnumToMasks
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diff changeset
222 (texture->format, &bpp, &Rmask, &Gmask, &Bmask, &Amask)) {
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diff changeset
223 SDL_SetError("Unknown texture format");
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diff changeset
224 return -1;
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diff changeset
225 }
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226
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diff changeset
227 texture->driverdata =
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diff changeset
228 SDL_CreateRGBSurface(0, texture->w, texture->h, bpp, Rmask, Gmask,
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diff changeset
229 Bmask, Amask);
1676
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230 }
e136f3ffdc1b Adding software renderer implementation
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diff changeset
231
1684
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diff changeset
232 if (!texture->driverdata) {
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diff changeset
233 return -1;
e136f3ffdc1b Adding software renderer implementation
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parents:
diff changeset
234 }
e136f3ffdc1b Adding software renderer implementation
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diff changeset
235 return 0;
e136f3ffdc1b Adding software renderer implementation
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parents:
diff changeset
236 }
e136f3ffdc1b Adding software renderer implementation
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diff changeset
237
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diff changeset
238 static int
1678
90bf530ced8e SDL_SetVideoMode() compiles now...
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diff changeset
239 SDL_SW_QueryTexturePixels(SDL_Renderer * renderer, SDL_Texture * texture,
90bf530ced8e SDL_SetVideoMode() compiles now...
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diff changeset
240 void **pixels, int *pitch)
90bf530ced8e SDL_SetVideoMode() compiles now...
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diff changeset
241 {
1684
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diff changeset
242 if (SDL_ISPIXELFORMAT_FOURCC(texture->format)) {
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diff changeset
243 return SDL_SW_QueryYUVTexturePixels((SDL_SW_YUVTexture *) texture->
c4aa1a2f48f1 Software YUV texture support in progress...
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diff changeset
244 driverdata, pixels, pitch);
c4aa1a2f48f1 Software YUV texture support in progress...
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diff changeset
245 } else {
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diff changeset
246 SDL_Surface *surface = (SDL_Surface *) texture->driverdata;
1678
90bf530ced8e SDL_SetVideoMode() compiles now...
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diff changeset
247
1684
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diff changeset
248 *pixels = surface->pixels;
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diff changeset
249 *pitch = surface->pitch;
c4aa1a2f48f1 Software YUV texture support in progress...
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diff changeset
250 return 0;
c4aa1a2f48f1 Software YUV texture support in progress...
Sam Lantinga <slouken@libsdl.org>
parents: 1683
diff changeset
251 }
1678
90bf530ced8e SDL_SetVideoMode() compiles now...
Sam Lantinga <slouken@libsdl.org>
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diff changeset
252 }
90bf530ced8e SDL_SetVideoMode() compiles now...
Sam Lantinga <slouken@libsdl.org>
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diff changeset
253
1680
9488fca10677 Dummy video driver works again in high color video modes. Yay!
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diff changeset
254 static int
9488fca10677 Dummy video driver works again in high color video modes. Yay!
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diff changeset
255 SDL_SW_SetTexturePalette(SDL_Renderer * renderer, SDL_Texture * texture,
1681
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diff changeset
256 const SDL_Color * colors, int firstcolor,
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diff changeset
257 int ncolors)
1680
9488fca10677 Dummy video driver works again in high color video modes. Yay!
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diff changeset
258 {
1684
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diff changeset
259 if (SDL_ISPIXELFORMAT_FOURCC(texture->format)) {
c4aa1a2f48f1 Software YUV texture support in progress...
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diff changeset
260 SDL_SetError("YUV textures don't have a palette");
c4aa1a2f48f1 Software YUV texture support in progress...
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diff changeset
261 return -1;
c4aa1a2f48f1 Software YUV texture support in progress...
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diff changeset
262 } else {
c4aa1a2f48f1 Software YUV texture support in progress...
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diff changeset
263 SDL_Surface *surface = (SDL_Surface *) texture->driverdata;
1680
9488fca10677 Dummy video driver works again in high color video modes. Yay!
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parents: 1678
diff changeset
264
1684
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diff changeset
265 return SDL_SetPaletteColors(surface->format->palette, colors,
c4aa1a2f48f1 Software YUV texture support in progress...
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diff changeset
266 firstcolor, ncolors);
c4aa1a2f48f1 Software YUV texture support in progress...
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diff changeset
267 }
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diff changeset
268 }
9488fca10677 Dummy video driver works again in high color video modes. Yay!
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diff changeset
269
9488fca10677 Dummy video driver works again in high color video modes. Yay!
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diff changeset
270 static int
1681
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diff changeset
271 SDL_SW_GetTexturePalette(SDL_Renderer * renderer, SDL_Texture * texture,
80a5e6a4e1e2 Working on paletted display and texture support (two different issues)
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parents: 1680
diff changeset
272 SDL_Color * colors, int firstcolor, int ncolors)
80a5e6a4e1e2 Working on paletted display and texture support (two different issues)
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parents: 1680
diff changeset
273 {
1684
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diff changeset
274 if (SDL_ISPIXELFORMAT_FOURCC(texture->format)) {
c4aa1a2f48f1 Software YUV texture support in progress...
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diff changeset
275 SDL_SetError("YUV textures don't have a palette");
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parents: 1683
diff changeset
276 return -1;
c4aa1a2f48f1 Software YUV texture support in progress...
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diff changeset
277 } else {
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diff changeset
278 SDL_Surface *surface = (SDL_Surface *) texture->driverdata;
1681
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diff changeset
279
1684
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diff changeset
280 SDL_memcpy(colors, &surface->format->palette->colors[firstcolor],
c4aa1a2f48f1 Software YUV texture support in progress...
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parents: 1683
diff changeset
281 ncolors * sizeof(*colors));
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diff changeset
282 return 0;
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diff changeset
283 }
1681
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diff changeset
284 }
80a5e6a4e1e2 Working on paletted display and texture support (two different issues)
Sam Lantinga <slouken@libsdl.org>
parents: 1680
diff changeset
285
80a5e6a4e1e2 Working on paletted display and texture support (two different issues)
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parents: 1680
diff changeset
286 static int
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parents:
diff changeset
287 SDL_SW_UpdateTexture(SDL_Renderer * renderer, SDL_Texture * texture,
1681
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parents: 1680
diff changeset
288 const SDL_Rect * rect, const void *pixels, int pitch)
1676
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parents:
diff changeset
289 {
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diff changeset
290 if (SDL_ISPIXELFORMAT_FOURCC(texture->format)) {
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diff changeset
291 return SDL_SW_UpdateYUVTexture((SDL_SW_YUVTexture *) texture->
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diff changeset
292 driverdata, rect, pixels, pitch);
c4aa1a2f48f1 Software YUV texture support in progress...
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diff changeset
293 } else {
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diff changeset
294 SDL_Surface *surface = (SDL_Surface *) texture->driverdata;
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diff changeset
295 Uint8 *src, *dst;
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diff changeset
296 int row;
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diff changeset
297 size_t length;
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298
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diff changeset
299 src = (Uint8 *) pixels;
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diff changeset
300 dst =
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diff changeset
301 (Uint8 *) surface->pixels + rect->y * surface->pitch +
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diff changeset
302 rect->x * surface->format->BytesPerPixel;
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diff changeset
303 length = rect->w * surface->format->BytesPerPixel;
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diff changeset
304 for (row = 0; row < rect->h; ++row) {
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diff changeset
305 SDL_memcpy(dst, src, length);
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diff changeset
306 src += pitch;
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diff changeset
307 dst += surface->pitch;
c4aa1a2f48f1 Software YUV texture support in progress...
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diff changeset
308 }
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diff changeset
309 return 0;
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310 }
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parents:
diff changeset
311 }
e136f3ffdc1b Adding software renderer implementation
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parents:
diff changeset
312
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diff changeset
313 static int
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diff changeset
314 SDL_SW_LockTexture(SDL_Renderer * renderer, SDL_Texture * texture,
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80a5e6a4e1e2 Working on paletted display and texture support (two different issues)
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parents: 1680
diff changeset
315 const SDL_Rect * rect, int markDirty, void **pixels,
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diff changeset
316 int *pitch)
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diff changeset
317 {
1684
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diff changeset
318 if (SDL_ISPIXELFORMAT_FOURCC(texture->format)) {
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diff changeset
319 return SDL_SW_LockYUVTexture((SDL_SW_YUVTexture *) texture->
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diff changeset
320 driverdata, rect, markDirty, pixels,
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parents: 1683
diff changeset
321 pitch);
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diff changeset
322 } else {
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diff changeset
323 SDL_Surface *surface = (SDL_Surface *) texture->driverdata;
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e136f3ffdc1b Adding software renderer implementation
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diff changeset
324
1684
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diff changeset
325 *pixels =
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diff changeset
326 (void *) ((Uint8 *) surface->pixels + rect->y * surface->pitch +
c4aa1a2f48f1 Software YUV texture support in progress...
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diff changeset
327 rect->x * surface->format->BytesPerPixel);
c4aa1a2f48f1 Software YUV texture support in progress...
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parents: 1683
diff changeset
328 *pitch = surface->pitch;
c4aa1a2f48f1 Software YUV texture support in progress...
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diff changeset
329 return 0;
c4aa1a2f48f1 Software YUV texture support in progress...
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parents: 1683
diff changeset
330 }
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e136f3ffdc1b Adding software renderer implementation
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diff changeset
331 }
e136f3ffdc1b Adding software renderer implementation
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parents:
diff changeset
332
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diff changeset
333 static void
1676
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parents:
diff changeset
334 SDL_SW_UnlockTexture(SDL_Renderer * renderer, SDL_Texture * texture)
e136f3ffdc1b Adding software renderer implementation
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
335 {
1684
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parents: 1683
diff changeset
336 if (SDL_ISPIXELFORMAT_FOURCC(texture->format)) {
c4aa1a2f48f1 Software YUV texture support in progress...
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parents: 1683
diff changeset
337 SDL_SW_UnlockYUVTexture((SDL_SW_YUVTexture *) texture->driverdata);
c4aa1a2f48f1 Software YUV texture support in progress...
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diff changeset
338 }
1676
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parents:
diff changeset
339 }
e136f3ffdc1b Adding software renderer implementation
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parents:
diff changeset
340
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Sam Lantinga <slouken@libsdl.org>
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diff changeset
341 static void
1676
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parents:
diff changeset
342 SDL_SW_DirtyTexture(SDL_Renderer * renderer, SDL_Texture * texture,
1681
80a5e6a4e1e2 Working on paletted display and texture support (two different issues)
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diff changeset
343 int numrects, const SDL_Rect * rects)
1676
e136f3ffdc1b Adding software renderer implementation
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diff changeset
344 {
e136f3ffdc1b Adding software renderer implementation
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parents:
diff changeset
345 }
e136f3ffdc1b Adding software renderer implementation
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parents:
diff changeset
346
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diff changeset
347 static void
1676
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parents:
diff changeset
348 SDL_SW_SelectRenderTexture(SDL_Renderer * renderer, SDL_Texture * texture)
e136f3ffdc1b Adding software renderer implementation
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parents:
diff changeset
349 {
e136f3ffdc1b Adding software renderer implementation
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parents:
diff changeset
350 SDL_SW_RenderData *data = (SDL_SW_RenderData *) renderer->driverdata;
1683
396a35389351 Finished palettized display handling.
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diff changeset
351
396a35389351 Finished palettized display handling.
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diff changeset
352 if (texture) {
396a35389351 Finished palettized display handling.
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diff changeset
353 data->target = (SDL_Surface *) texture->driverdata;
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1681
diff changeset
354 } else {
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1681
diff changeset
355 data->target = data->screens[data->current_screen];
396a35389351 Finished palettized display handling.
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diff changeset
356 }
1676
e136f3ffdc1b Adding software renderer implementation
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parents:
diff changeset
357 }
e136f3ffdc1b Adding software renderer implementation
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parents:
diff changeset
358
1720
a1ebb17f9c52 Cleaned up a bunch of warnings, started adding Win32 event support
Sam Lantinga <slouken@libsdl.org>
parents: 1706
diff changeset
359 static int
1681
80a5e6a4e1e2 Working on paletted display and texture support (two different issues)
Sam Lantinga <slouken@libsdl.org>
parents: 1680
diff changeset
360 SDL_SW_RenderFill(SDL_Renderer * renderer, const SDL_Rect * rect,
80a5e6a4e1e2 Working on paletted display and texture support (two different issues)
Sam Lantinga <slouken@libsdl.org>
parents: 1680
diff changeset
361 Uint32 color)
1676
e136f3ffdc1b Adding software renderer implementation
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
362 {
e136f3ffdc1b Adding software renderer implementation
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parents:
diff changeset
363 SDL_SW_RenderData *data = (SDL_SW_RenderData *) renderer->driverdata;
1681
80a5e6a4e1e2 Working on paletted display and texture support (two different issues)
Sam Lantinga <slouken@libsdl.org>
parents: 1680
diff changeset
364 SDL_Rect real_rect = *rect;
1676
e136f3ffdc1b Adding software renderer implementation
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
365 Uint8 r, g, b, a;
e136f3ffdc1b Adding software renderer implementation
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
366
1735
8dd28c4ef746 SDL_Rect now uses int for position and size.
Sam Lantinga <slouken@libsdl.org>
parents: 1720
diff changeset
367 SDL_AddDirtyRect(&data->dirty, rect);
8dd28c4ef746 SDL_Rect now uses int for position and size.
Sam Lantinga <slouken@libsdl.org>
parents: 1720
diff changeset
368
1676
e136f3ffdc1b Adding software renderer implementation
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
369 a = (Uint8) ((color >> 24) & 0xFF);
e136f3ffdc1b Adding software renderer implementation
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
370 r = (Uint8) ((color >> 16) & 0xFF);
e136f3ffdc1b Adding software renderer implementation
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
371 g = (Uint8) ((color >> 8) & 0xFF);
e136f3ffdc1b Adding software renderer implementation
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
372 b = (Uint8) (color & 0xFF);
e136f3ffdc1b Adding software renderer implementation
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parents:
diff changeset
373 color = SDL_MapRGBA(data->target->format, r, g, b, a);
e136f3ffdc1b Adding software renderer implementation
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
374
1720
a1ebb17f9c52 Cleaned up a bunch of warnings, started adding Win32 event support
Sam Lantinga <slouken@libsdl.org>
parents: 1706
diff changeset
375 return SDL_FillRect(data->target, &real_rect, color);
1676
e136f3ffdc1b Adding software renderer implementation
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
376 }
e136f3ffdc1b Adding software renderer implementation
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
377
1680
9488fca10677 Dummy video driver works again in high color video modes. Yay!
Sam Lantinga <slouken@libsdl.org>
parents: 1678
diff changeset
378 static int
1676
e136f3ffdc1b Adding software renderer implementation
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
379 SDL_SW_RenderCopy(SDL_Renderer * renderer, SDL_Texture * texture,
1681
80a5e6a4e1e2 Working on paletted display and texture support (two different issues)
Sam Lantinga <slouken@libsdl.org>
parents: 1680
diff changeset
380 const SDL_Rect * srcrect, const SDL_Rect * dstrect,
80a5e6a4e1e2 Working on paletted display and texture support (two different issues)
Sam Lantinga <slouken@libsdl.org>
parents: 1680
diff changeset
381 int blendMode, int scaleMode)
1676
e136f3ffdc1b Adding software renderer implementation
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
382 {
e136f3ffdc1b Adding software renderer implementation
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
383 SDL_SW_RenderData *data = (SDL_SW_RenderData *) renderer->driverdata;
1706
1577404809f0 Added a multi-window version of testsprite using the new API.
Sam Lantinga <slouken@libsdl.org>
parents: 1684
diff changeset
384 SDL_Window *window = SDL_GetWindowFromID(renderer->window);
1577404809f0 Added a multi-window version of testsprite using the new API.
Sam Lantinga <slouken@libsdl.org>
parents: 1684
diff changeset
385 SDL_VideoDisplay *display = SDL_GetDisplayFromWindow(window);
1676
e136f3ffdc1b Adding software renderer implementation
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
386
1735
8dd28c4ef746 SDL_Rect now uses int for position and size.
Sam Lantinga <slouken@libsdl.org>
parents: 1720
diff changeset
387 SDL_AddDirtyRect(&data->dirty, dstrect);
8dd28c4ef746 SDL_Rect now uses int for position and size.
Sam Lantinga <slouken@libsdl.org>
parents: 1720
diff changeset
388
1684
c4aa1a2f48f1 Software YUV texture support in progress...
Sam Lantinga <slouken@libsdl.org>
parents: 1683
diff changeset
389 if (SDL_ISPIXELFORMAT_FOURCC(texture->format)) {
c4aa1a2f48f1 Software YUV texture support in progress...
Sam Lantinga <slouken@libsdl.org>
parents: 1683
diff changeset
390 SDL_Surface *target = data->target;
c4aa1a2f48f1 Software YUV texture support in progress...
Sam Lantinga <slouken@libsdl.org>
parents: 1683
diff changeset
391 void *pixels =
c4aa1a2f48f1 Software YUV texture support in progress...
Sam Lantinga <slouken@libsdl.org>
parents: 1683
diff changeset
392 (Uint8 *) target->pixels + dstrect->y * target->pitch +
c4aa1a2f48f1 Software YUV texture support in progress...
Sam Lantinga <slouken@libsdl.org>
parents: 1683
diff changeset
393 dstrect->x * target->format->BytesPerPixel;
c4aa1a2f48f1 Software YUV texture support in progress...
Sam Lantinga <slouken@libsdl.org>
parents: 1683
diff changeset
394 return SDL_SW_CopyYUVToRGB((SDL_SW_YUVTexture *) texture->driverdata,
1706
1577404809f0 Added a multi-window version of testsprite using the new API.
Sam Lantinga <slouken@libsdl.org>
parents: 1684
diff changeset
395 srcrect, display->current_mode.format,
1577404809f0 Added a multi-window version of testsprite using the new API.
Sam Lantinga <slouken@libsdl.org>
parents: 1684
diff changeset
396 dstrect->w, dstrect->h, pixels,
1684
c4aa1a2f48f1 Software YUV texture support in progress...
Sam Lantinga <slouken@libsdl.org>
parents: 1683
diff changeset
397 target->pitch);
1676
e136f3ffdc1b Adding software renderer implementation
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
398 } else {
1684
c4aa1a2f48f1 Software YUV texture support in progress...
Sam Lantinga <slouken@libsdl.org>
parents: 1683
diff changeset
399 SDL_Surface *surface = (SDL_Surface *) texture->driverdata;
c4aa1a2f48f1 Software YUV texture support in progress...
Sam Lantinga <slouken@libsdl.org>
parents: 1683
diff changeset
400 SDL_Rect real_srcrect = *srcrect;
c4aa1a2f48f1 Software YUV texture support in progress...
Sam Lantinga <slouken@libsdl.org>
parents: 1683
diff changeset
401 SDL_Rect real_dstrect = *dstrect;
c4aa1a2f48f1 Software YUV texture support in progress...
Sam Lantinga <slouken@libsdl.org>
parents: 1683
diff changeset
402
c4aa1a2f48f1 Software YUV texture support in progress...
Sam Lantinga <slouken@libsdl.org>
parents: 1683
diff changeset
403 if (blendMode &
c4aa1a2f48f1 Software YUV texture support in progress...
Sam Lantinga <slouken@libsdl.org>
parents: 1683
diff changeset
404 (SDL_TextureBlendMode_Mask | SDL_TextureBlendMode_Blend)) {
c4aa1a2f48f1 Software YUV texture support in progress...
Sam Lantinga <slouken@libsdl.org>
parents: 1683
diff changeset
405 SDL_SetAlpha(surface, SDL_SRCALPHA, 0);
c4aa1a2f48f1 Software YUV texture support in progress...
Sam Lantinga <slouken@libsdl.org>
parents: 1683
diff changeset
406 } else {
c4aa1a2f48f1 Software YUV texture support in progress...
Sam Lantinga <slouken@libsdl.org>
parents: 1683
diff changeset
407 SDL_SetAlpha(surface, 0, 0);
c4aa1a2f48f1 Software YUV texture support in progress...
Sam Lantinga <slouken@libsdl.org>
parents: 1683
diff changeset
408 }
c4aa1a2f48f1 Software YUV texture support in progress...
Sam Lantinga <slouken@libsdl.org>
parents: 1683
diff changeset
409 if (scaleMode != SDL_TextureScaleMode_None &&
c4aa1a2f48f1 Software YUV texture support in progress...
Sam Lantinga <slouken@libsdl.org>
parents: 1683
diff changeset
410 (srcrect->w != dstrect->w || srcrect->h != dstrect->h)) {
c4aa1a2f48f1 Software YUV texture support in progress...
Sam Lantinga <slouken@libsdl.org>
parents: 1683
diff changeset
411 return SDL_SoftStretch(surface, &real_srcrect, data->target,
c4aa1a2f48f1 Software YUV texture support in progress...
Sam Lantinga <slouken@libsdl.org>
parents: 1683
diff changeset
412 &real_dstrect);
c4aa1a2f48f1 Software YUV texture support in progress...
Sam Lantinga <slouken@libsdl.org>
parents: 1683
diff changeset
413 } else {
c4aa1a2f48f1 Software YUV texture support in progress...
Sam Lantinga <slouken@libsdl.org>
parents: 1683
diff changeset
414 return SDL_LowerBlit(surface, &real_srcrect, data->target,
c4aa1a2f48f1 Software YUV texture support in progress...
Sam Lantinga <slouken@libsdl.org>
parents: 1683
diff changeset
415 &real_dstrect);
c4aa1a2f48f1 Software YUV texture support in progress...
Sam Lantinga <slouken@libsdl.org>
parents: 1683
diff changeset
416 }
1676
e136f3ffdc1b Adding software renderer implementation
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
417 }
e136f3ffdc1b Adding software renderer implementation
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
418 }
e136f3ffdc1b Adding software renderer implementation
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
419
1680
9488fca10677 Dummy video driver works again in high color video modes. Yay!
Sam Lantinga <slouken@libsdl.org>
parents: 1678
diff changeset
420 static int
1681
80a5e6a4e1e2 Working on paletted display and texture support (two different issues)
Sam Lantinga <slouken@libsdl.org>
parents: 1680
diff changeset
421 SDL_SW_RenderReadPixels(SDL_Renderer * renderer, const SDL_Rect * rect,
1676
e136f3ffdc1b Adding software renderer implementation
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
422 void *pixels, int pitch)
e136f3ffdc1b Adding software renderer implementation
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
423 {
e136f3ffdc1b Adding software renderer implementation
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
424 SDL_SW_RenderData *data = (SDL_SW_RenderData *) renderer->driverdata;
e136f3ffdc1b Adding software renderer implementation
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
425 SDL_Surface *surface = data->target;
e136f3ffdc1b Adding software renderer implementation
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
426 Uint8 *src, *dst;
e136f3ffdc1b Adding software renderer implementation
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
427 int row;
e136f3ffdc1b Adding software renderer implementation
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
428 size_t length;
e136f3ffdc1b Adding software renderer implementation
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
429
e136f3ffdc1b Adding software renderer implementation
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
430 src =
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431 (Uint8 *) surface->pixels + rect->y * surface->pitch +
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432 rect->x * surface->format->BytesPerPixel;
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433 dst = (Uint8 *) pixels;
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434 length = rect->w * surface->format->BytesPerPixel;
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diff changeset
435 for (row = 0; row < rect->h; ++row) {
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diff changeset
436 SDL_memcpy(dst, src, length);
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437 src += surface->pitch;
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diff changeset
438 dst += pitch;
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439 }
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440 return 0;
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parents:
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441 }
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442
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443 static int
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444 SDL_SW_RenderWritePixels(SDL_Renderer * renderer, const SDL_Rect * rect,
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445 const void *pixels, int pitch)
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446 {
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447 SDL_SW_RenderData *data = (SDL_SW_RenderData *) renderer->driverdata;
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448 SDL_Surface *surface = data->target;
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449 Uint8 *src, *dst;
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450 int row;
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451 size_t length;
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452
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453 SDL_AddDirtyRect(&data->dirty, rect);
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454
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455 src = (Uint8 *) pixels;
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456 dst =
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457 (Uint8 *) surface->pixels + rect->y * surface->pitch +
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458 rect->x * surface->format->BytesPerPixel;
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459 length = rect->w * surface->format->BytesPerPixel;
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diff changeset
460 for (row = 0; row < rect->h; ++row) {
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diff changeset
461 SDL_memcpy(dst, src, length);
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462 src += pitch;
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463 dst += surface->pitch;
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diff changeset
464 }
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465 return 0;
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466 }
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467
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468 static void
1676
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469 SDL_SW_RenderPresent(SDL_Renderer * renderer)
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diff changeset
470 {
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471 SDL_SW_RenderData *data = (SDL_SW_RenderData *) renderer->driverdata;
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472 SDL_Surface *surface = data->screens[data->current_screen];
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473 SDL_DirtyRect *dirty;
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474 int new_screen;
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475
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476 /* Send the data to the display */
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477 for (dirty = data->dirty.list; dirty; dirty = dirty->next) {
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478 void *pixels =
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479 (void *) ((Uint8 *) surface->pixels +
8dd28c4ef746 SDL_Rect now uses int for position and size.
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480 dirty->rect.y * surface->pitch +
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diff changeset
481 dirty->rect.x * surface->format->BytesPerPixel);
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diff changeset
482 data->renderer->RenderWritePixels(data->renderer, &dirty->rect,
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483 pixels, surface->pitch);
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diff changeset
484 }
8dd28c4ef746 SDL_Rect now uses int for position and size.
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485 SDL_ClearDirtyRects(&data->dirty);
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486 data->renderer->RenderPresent(data->renderer);
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parents:
diff changeset
487
1735
8dd28c4ef746 SDL_Rect now uses int for position and size.
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diff changeset
488
1676
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diff changeset
489 /* Update the flipping chain, if any */
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diff changeset
490 if (renderer->info.flags & SDL_Renderer_PresentFlip2) {
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parents:
diff changeset
491 new_screen = (data->current_screen + 1) % 2;
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parents:
diff changeset
492 } else if (renderer->info.flags & SDL_Renderer_PresentFlip3) {
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parents:
diff changeset
493 new_screen = (data->current_screen + 1) % 3;
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parents:
diff changeset
494 } else {
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parents:
diff changeset
495 new_screen = 0;
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diff changeset
496 }
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Sam Lantinga <slouken@libsdl.org>
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diff changeset
497 if (data->target == data->screens[data->current_screen]) {
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parents:
diff changeset
498 data->target = data->screens[new_screen];
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parents:
diff changeset
499 }
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parents:
diff changeset
500 data->current_screen = new_screen;
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parents:
diff changeset
501 }
e136f3ffdc1b Adding software renderer implementation
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
502
1680
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Sam Lantinga <slouken@libsdl.org>
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diff changeset
503 static void
1676
e136f3ffdc1b Adding software renderer implementation
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diff changeset
504 SDL_SW_DestroyTexture(SDL_Renderer * renderer, SDL_Texture * texture)
e136f3ffdc1b Adding software renderer implementation
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
505 {
1684
c4aa1a2f48f1 Software YUV texture support in progress...
Sam Lantinga <slouken@libsdl.org>
parents: 1683
diff changeset
506 if (SDL_ISPIXELFORMAT_FOURCC(texture->format)) {
c4aa1a2f48f1 Software YUV texture support in progress...
Sam Lantinga <slouken@libsdl.org>
parents: 1683
diff changeset
507 SDL_SW_DestroyYUVTexture((SDL_SW_YUVTexture *) texture->driverdata);
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Sam Lantinga <slouken@libsdl.org>
parents: 1683
diff changeset
508 } else {
c4aa1a2f48f1 Software YUV texture support in progress...
Sam Lantinga <slouken@libsdl.org>
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diff changeset
509 SDL_Surface *surface = (SDL_Surface *) texture->driverdata;
1676
e136f3ffdc1b Adding software renderer implementation
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parents:
diff changeset
510
1684
c4aa1a2f48f1 Software YUV texture support in progress...
Sam Lantinga <slouken@libsdl.org>
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diff changeset
511 SDL_FreeSurface(surface);
c4aa1a2f48f1 Software YUV texture support in progress...
Sam Lantinga <slouken@libsdl.org>
parents: 1683
diff changeset
512 }
1676
e136f3ffdc1b Adding software renderer implementation
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
513 }
e136f3ffdc1b Adding software renderer implementation
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
514
1680
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Sam Lantinga <slouken@libsdl.org>
parents: 1678
diff changeset
515 static void
1676
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parents:
diff changeset
516 SDL_SW_DestroyRenderer(SDL_Renderer * renderer)
e136f3ffdc1b Adding software renderer implementation
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
517 {
e136f3ffdc1b Adding software renderer implementation
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
518 SDL_SW_RenderData *data = (SDL_SW_RenderData *) renderer->driverdata;
e136f3ffdc1b Adding software renderer implementation
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
519 int i;
e136f3ffdc1b Adding software renderer implementation
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
520
e136f3ffdc1b Adding software renderer implementation
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
521 if (data) {
e136f3ffdc1b Adding software renderer implementation
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
522 for (i = 0; i < SDL_arraysize(data->screens); ++i) {
e136f3ffdc1b Adding software renderer implementation
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
523 if (data->screens[i]) {
e136f3ffdc1b Adding software renderer implementation
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
524 SDL_FreeSurface(data->screens[i]);
e136f3ffdc1b Adding software renderer implementation
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
525 }
e136f3ffdc1b Adding software renderer implementation
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
526 }
1735
8dd28c4ef746 SDL_Rect now uses int for position and size.
Sam Lantinga <slouken@libsdl.org>
parents: 1720
diff changeset
527 SDL_FreeDirtyRects(&data->dirty);
1676
e136f3ffdc1b Adding software renderer implementation
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
528 SDL_free(data);
e136f3ffdc1b Adding software renderer implementation
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
529 }
e136f3ffdc1b Adding software renderer implementation
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
530 SDL_free(renderer);
e136f3ffdc1b Adding software renderer implementation
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
531 }
e136f3ffdc1b Adding software renderer implementation
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
532
e136f3ffdc1b Adding software renderer implementation
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
533 /* vi: set ts=4 sw=4 expandtab: */