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annotate src/video/SDL_renderer_sw.c @ 1706:1577404809f0 SDL-1.3

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Added a multi-window version of testsprite using the new API.
author Sam Lantinga <slouken@libsdl.org>
date Sat, 24 Jun 2006 16:51:01 +0000
parents c4aa1a2f48f1
children a1ebb17f9c52
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_yuv_sw_c.h"
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27
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28
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29 /* SDL surface based renderer implementation */
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30
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31 static SDL_Renderer *SDL_SW_CreateRenderer(SDL_Window * window, Uint32 flags);
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32 static int SDL_SW_CreateTexture(SDL_Renderer * renderer,
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33 SDL_Texture * texture);
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34 static int SDL_SW_QueryTexturePixels(SDL_Renderer * renderer,
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35 SDL_Texture * texture, void **pixels,
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36 int *pitch);
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37 static int SDL_SW_SetTexturePalette(SDL_Renderer * renderer,
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38 SDL_Texture * texture,
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39 const SDL_Color * colors, int firstcolor,
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40 int ncolors);
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41 static int SDL_SW_GetTexturePalette(SDL_Renderer * renderer,
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42 SDL_Texture * texture, SDL_Color * colors,
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43 int firstcolor, int ncolors);
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44 static int SDL_SW_UpdateTexture(SDL_Renderer * renderer,
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45 SDL_Texture * texture, const SDL_Rect * rect,
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46 const void *pixels, int pitch);
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47 static int SDL_SW_LockTexture(SDL_Renderer * renderer, SDL_Texture * texture,
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48 const SDL_Rect * rect, int markDirty,
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49 void **pixels, int *pitch);
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50 static void SDL_SW_UnlockTexture(SDL_Renderer * renderer,
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51 SDL_Texture * texture);
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52 static void SDL_SW_DirtyTexture(SDL_Renderer * renderer,
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53 SDL_Texture * texture, int numrects,
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54 const SDL_Rect * rects);
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55 static void SDL_SW_SelectRenderTexture(SDL_Renderer * renderer,
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56 SDL_Texture * texture);
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57 static void SDL_SW_RenderFill(SDL_Renderer * renderer, const SDL_Rect * rect,
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58 Uint32 color);
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59 static int SDL_SW_RenderCopy(SDL_Renderer * renderer, SDL_Texture * texture,
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60 const SDL_Rect * srcrect,
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61 const SDL_Rect * dstrect, int blendMode,
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62 int scaleMode);
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63 static int SDL_SW_RenderReadPixels(SDL_Renderer * renderer,
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64 const SDL_Rect * rect, void *pixels,
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65 int pitch);
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66 static int SDL_SW_RenderWritePixels(SDL_Renderer * renderer,
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67 const SDL_Rect * rect, const void *pixels,
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68 int pitch);
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69 static void SDL_SW_RenderPresent(SDL_Renderer * renderer);
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70 static void SDL_SW_DestroyTexture(SDL_Renderer * renderer,
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71 SDL_Texture * texture);
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72 static void SDL_SW_DestroyRenderer(SDL_Renderer * renderer);
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73
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74
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75 SDL_RenderDriver SDL_SW_RenderDriver = {
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76 SDL_SW_CreateRenderer,
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77 {
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78 "software",
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79 (SDL_Renderer_PresentDiscard |
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80 SDL_Renderer_PresentCopy |
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81 SDL_Renderer_PresentFlip2 |
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82 SDL_Renderer_PresentFlip3 | SDL_Renderer_RenderTarget),
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83 (SDL_TextureBlendMode_None |
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84 SDL_TextureBlendMode_Mask | SDL_TextureBlendMode_Blend),
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85 (SDL_TextureScaleMode_None | SDL_TextureScaleMode_Fast),
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86 11,
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87 {
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88 SDL_PixelFormat_Index8,
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89 SDL_PixelFormat_RGB555,
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90 SDL_PixelFormat_RGB565,
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91 SDL_PixelFormat_RGB888,
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92 SDL_PixelFormat_BGR888,
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93 SDL_PixelFormat_ARGB8888,
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94 SDL_PixelFormat_RGBA8888,
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95 SDL_PixelFormat_ABGR8888,
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96 SDL_PixelFormat_BGRA8888,
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97 SDL_PixelFormat_YUY2,
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98 SDL_PixelFormat_UYVY},
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99 32768,
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100 32768}
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101 };
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102
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103 typedef struct
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104 {
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105 int current_screen;
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106 SDL_Surface *screens[3];
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107 SDL_Surface *target;
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108 SDL_Renderer *renderer;
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109 } SDL_SW_RenderData;
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110
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111 SDL_Renderer *
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112 SDL_SW_CreateRenderer(SDL_Window * window, Uint32 flags)
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113 {
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114 SDL_VideoDisplay *display = SDL_GetDisplayFromWindow(window);
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115 SDL_DisplayMode *displayMode = &display->current_mode;
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116 SDL_Renderer *renderer;
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117 SDL_SW_RenderData *data;
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118 int i, n;
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119 int bpp;
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120 Uint32 Rmask, Gmask, Bmask, Amask;
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121
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122 if (!SDL_PixelFormatEnumToMasks
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123 (displayMode->format, &bpp, &Rmask, &Gmask, &Bmask, &Amask)) {
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124 SDL_SetError("Unknown display format");
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125 return NULL;
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126 }
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127
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128 renderer = (SDL_Renderer *) SDL_malloc(sizeof(*renderer));
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129 if (!renderer) {
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130 SDL_OutOfMemory();
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131 return NULL;
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132 }
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133 SDL_zerop(renderer);
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134
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135 data = (SDL_SW_RenderData *) SDL_malloc(sizeof(*data));
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136 if (!data) {
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137 SDL_SW_DestroyRenderer(renderer);
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138 SDL_OutOfMemory();
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139 return NULL;
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140 }
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141 SDL_zerop(data);
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142
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143 renderer->CreateTexture = SDL_SW_CreateTexture;
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144 renderer->QueryTexturePixels = SDL_SW_QueryTexturePixels;
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145 renderer->SetTexturePalette = SDL_SW_SetTexturePalette;
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146 renderer->GetTexturePalette = SDL_SW_GetTexturePalette;
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147 renderer->UpdateTexture = SDL_SW_UpdateTexture;
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148 renderer->LockTexture = SDL_SW_LockTexture;
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149 renderer->UnlockTexture = SDL_SW_UnlockTexture;
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150 renderer->DirtyTexture = SDL_SW_DirtyTexture;
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151 renderer->SelectRenderTexture = SDL_SW_SelectRenderTexture;
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152 renderer->RenderFill = SDL_SW_RenderFill;
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153 renderer->RenderCopy = SDL_SW_RenderCopy;
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154 renderer->RenderReadPixels = SDL_SW_RenderReadPixels;
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155 renderer->RenderWritePixels = SDL_SW_RenderWritePixels;
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156 renderer->RenderPresent = SDL_SW_RenderPresent;
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157 renderer->DestroyTexture = SDL_SW_DestroyTexture;
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158 renderer->DestroyRenderer = SDL_SW_DestroyRenderer;
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159 renderer->info = SDL_SW_RenderDriver.info;
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160 renderer->window = window->id;
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161 renderer->driverdata = data;
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162
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163 renderer->info.flags = SDL_Renderer_RenderTarget;
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164
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165 if (flags & SDL_Renderer_PresentFlip2) {
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166 renderer->info.flags |= SDL_Renderer_PresentFlip2;
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167 n = 2;
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168 } else if (flags & SDL_Renderer_PresentFlip3) {
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169 renderer->info.flags |= SDL_Renderer_PresentFlip3;
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170 n = 3;
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171 } else {
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172 renderer->info.flags |= SDL_Renderer_PresentCopy;
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173 n = 1;
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174 }
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175 for (i = 0; i < n; ++i) {
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176 data->screens[i] =
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177 SDL_CreateRGBSurface(0, window->w, window->h, bpp, Rmask, Gmask,
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178 Bmask, Amask);
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179 if (!data->screens[i]) {
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180 SDL_SW_DestroyRenderer(renderer);
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181 return NULL;
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182 }
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183 SDL_SetSurfacePalette(data->screens[i], display->palette);
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184 }
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185 data->current_screen = 0;
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186 data->target = data->screens[0];
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187
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188 /* Find a render driver that we can use to display data */
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189 for (i = 0; i < display->num_render_drivers; ++i) {
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190 SDL_RenderDriver *driver = &display->render_drivers[i];
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191 if (driver->info.name != SDL_SW_RenderDriver.info.name) {
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192 data->renderer =
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193 driver->CreateRenderer(window, SDL_Renderer_PresentDiscard);
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194 if (data->renderer) {
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195 break;
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196 }
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197 }
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198 }
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199 if (i == display->num_render_drivers) {
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200 SDL_SW_DestroyRenderer(renderer);
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201 SDL_SetError("Couldn't find display render driver");
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202 return NULL;
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203 }
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204 return renderer;
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205 }
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206
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207 static int
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208 SDL_SW_CreateTexture(SDL_Renderer * renderer, SDL_Texture * texture)
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209 {
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210 if (SDL_ISPIXELFORMAT_FOURCC(texture->format)) {
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211 if (texture->access == SDL_TextureAccess_Render) {
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212 SDL_SetError("Rendering to YUV format textures is not supported");
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213 return -1;
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214 }
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215 texture->driverdata = SDL_SW_CreateYUVTexture(texture);
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216 } else {
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diff changeset
217 int bpp;
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218 Uint32 Rmask, Gmask, Bmask, Amask;
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diff changeset
219
1684
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220 if (!SDL_PixelFormatEnumToMasks
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diff changeset
221 (texture->format, &bpp, &Rmask, &Gmask, &Bmask, &Amask)) {
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diff changeset
222 SDL_SetError("Unknown texture format");
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diff changeset
223 return -1;
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diff changeset
224 }
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diff changeset
225
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diff changeset
226 texture->driverdata =
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diff changeset
227 SDL_CreateRGBSurface(0, texture->w, texture->h, bpp, Rmask, Gmask,
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diff changeset
228 Bmask, Amask);
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229 }
e136f3ffdc1b Adding software renderer implementation
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diff changeset
230
1684
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diff changeset
231 if (!texture->driverdata) {
1676
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diff changeset
232 return -1;
e136f3ffdc1b Adding software renderer implementation
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parents:
diff changeset
233 }
e136f3ffdc1b Adding software renderer implementation
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parents:
diff changeset
234 return 0;
e136f3ffdc1b Adding software renderer implementation
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parents:
diff changeset
235 }
e136f3ffdc1b Adding software renderer implementation
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diff changeset
236
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diff changeset
237 static int
1678
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diff changeset
238 SDL_SW_QueryTexturePixels(SDL_Renderer * renderer, SDL_Texture * texture,
90bf530ced8e SDL_SetVideoMode() compiles now...
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diff changeset
239 void **pixels, int *pitch)
90bf530ced8e SDL_SetVideoMode() compiles now...
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diff changeset
240 {
1684
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diff changeset
241 if (SDL_ISPIXELFORMAT_FOURCC(texture->format)) {
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diff changeset
242 return SDL_SW_QueryYUVTexturePixels((SDL_SW_YUVTexture *) texture->
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diff changeset
243 driverdata, pixels, pitch);
c4aa1a2f48f1 Software YUV texture support in progress...
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diff changeset
244 } else {
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diff changeset
245 SDL_Surface *surface = (SDL_Surface *) texture->driverdata;
1678
90bf530ced8e SDL_SetVideoMode() compiles now...
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diff changeset
246
1684
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diff changeset
247 *pixels = surface->pixels;
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diff changeset
248 *pitch = surface->pitch;
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diff changeset
249 return 0;
c4aa1a2f48f1 Software YUV texture support in progress...
Sam Lantinga <slouken@libsdl.org>
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diff changeset
250 }
1678
90bf530ced8e SDL_SetVideoMode() compiles now...
Sam Lantinga <slouken@libsdl.org>
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diff changeset
251 }
90bf530ced8e SDL_SetVideoMode() compiles now...
Sam Lantinga <slouken@libsdl.org>
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diff changeset
252
1680
9488fca10677 Dummy video driver works again in high color video modes. Yay!
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diff changeset
253 static int
9488fca10677 Dummy video driver works again in high color video modes. Yay!
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parents: 1678
diff changeset
254 SDL_SW_SetTexturePalette(SDL_Renderer * renderer, SDL_Texture * texture,
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diff changeset
255 const SDL_Color * colors, int firstcolor,
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diff changeset
256 int ncolors)
1680
9488fca10677 Dummy video driver works again in high color video modes. Yay!
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diff changeset
257 {
1684
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diff changeset
258 if (SDL_ISPIXELFORMAT_FOURCC(texture->format)) {
c4aa1a2f48f1 Software YUV texture support in progress...
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diff changeset
259 SDL_SetError("YUV textures don't have a palette");
c4aa1a2f48f1 Software YUV texture support in progress...
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diff changeset
260 return -1;
c4aa1a2f48f1 Software YUV texture support in progress...
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diff changeset
261 } else {
c4aa1a2f48f1 Software YUV texture support in progress...
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diff changeset
262 SDL_Surface *surface = (SDL_Surface *) texture->driverdata;
1680
9488fca10677 Dummy video driver works again in high color video modes. Yay!
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diff changeset
263
1684
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diff changeset
264 return SDL_SetPaletteColors(surface->format->palette, colors,
c4aa1a2f48f1 Software YUV texture support in progress...
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diff changeset
265 firstcolor, ncolors);
c4aa1a2f48f1 Software YUV texture support in progress...
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diff changeset
266 }
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diff changeset
267 }
9488fca10677 Dummy video driver works again in high color video modes. Yay!
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parents: 1678
diff changeset
268
9488fca10677 Dummy video driver works again in high color video modes. Yay!
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parents: 1678
diff changeset
269 static int
1681
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diff changeset
270 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
271 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
272 {
1684
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diff changeset
273 if (SDL_ISPIXELFORMAT_FOURCC(texture->format)) {
c4aa1a2f48f1 Software YUV texture support in progress...
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parents: 1683
diff changeset
274 SDL_SetError("YUV textures don't have a palette");
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parents: 1683
diff changeset
275 return -1;
c4aa1a2f48f1 Software YUV texture support in progress...
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parents: 1683
diff changeset
276 } else {
c4aa1a2f48f1 Software YUV texture support in progress...
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parents: 1683
diff changeset
277 SDL_Surface *surface = (SDL_Surface *) texture->driverdata;
1681
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diff changeset
278
1684
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diff changeset
279 SDL_memcpy(colors, &surface->format->palette->colors[firstcolor],
c4aa1a2f48f1 Software YUV texture support in progress...
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parents: 1683
diff changeset
280 ncolors * sizeof(*colors));
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diff changeset
281 return 0;
c4aa1a2f48f1 Software YUV texture support in progress...
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diff changeset
282 }
1681
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diff changeset
283 }
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parents: 1680
diff changeset
284
80a5e6a4e1e2 Working on paletted display and texture support (two different issues)
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parents: 1680
diff changeset
285 static int
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parents:
diff changeset
286 SDL_SW_UpdateTexture(SDL_Renderer * renderer, SDL_Texture * texture,
1681
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parents: 1680
diff changeset
287 const SDL_Rect * rect, const void *pixels, int pitch)
1676
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parents:
diff changeset
288 {
1684
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diff changeset
289 if (SDL_ISPIXELFORMAT_FOURCC(texture->format)) {
c4aa1a2f48f1 Software YUV texture support in progress...
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diff changeset
290 return SDL_SW_UpdateYUVTexture((SDL_SW_YUVTexture *) texture->
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diff changeset
291 driverdata, rect, pixels, pitch);
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292 } else {
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293 SDL_Surface *surface = (SDL_Surface *) texture->driverdata;
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294 Uint8 *src, *dst;
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diff changeset
295 int row;
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296 size_t length;
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297
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298 src = (Uint8 *) pixels;
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299 dst =
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300 (Uint8 *) surface->pixels + rect->y * surface->pitch +
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301 rect->x * surface->format->BytesPerPixel;
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302 length = rect->w * surface->format->BytesPerPixel;
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diff changeset
303 for (row = 0; row < rect->h; ++row) {
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diff changeset
304 SDL_memcpy(dst, src, length);
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diff changeset
305 src += pitch;
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diff changeset
306 dst += surface->pitch;
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diff changeset
307 }
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diff changeset
308 return 0;
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309 }
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310 }
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311
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diff changeset
312 static int
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313 SDL_SW_LockTexture(SDL_Renderer * renderer, SDL_Texture * texture,
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diff changeset
314 const SDL_Rect * rect, int markDirty, void **pixels,
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315 int *pitch)
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316 {
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317 if (SDL_ISPIXELFORMAT_FOURCC(texture->format)) {
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diff changeset
318 return SDL_SW_LockYUVTexture((SDL_SW_YUVTexture *) texture->
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diff changeset
319 driverdata, rect, markDirty, pixels,
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diff changeset
320 pitch);
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321 } else {
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diff changeset
322 SDL_Surface *surface = (SDL_Surface *) texture->driverdata;
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323
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324 *pixels =
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diff changeset
325 (void *) ((Uint8 *) surface->pixels + rect->y * surface->pitch +
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diff changeset
326 rect->x * surface->format->BytesPerPixel);
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diff changeset
327 *pitch = surface->pitch;
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diff changeset
328 return 0;
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diff changeset
329 }
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e136f3ffdc1b Adding software renderer implementation
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330 }
e136f3ffdc1b Adding software renderer implementation
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331
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diff changeset
332 static void
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333 SDL_SW_UnlockTexture(SDL_Renderer * renderer, SDL_Texture * texture)
e136f3ffdc1b Adding software renderer implementation
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parents:
diff changeset
334 {
1684
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diff changeset
335 if (SDL_ISPIXELFORMAT_FOURCC(texture->format)) {
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diff changeset
336 SDL_SW_UnlockYUVTexture((SDL_SW_YUVTexture *) texture->driverdata);
c4aa1a2f48f1 Software YUV texture support in progress...
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diff changeset
337 }
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338 }
e136f3ffdc1b Adding software renderer implementation
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diff changeset
339
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diff changeset
340 static void
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diff changeset
341 SDL_SW_DirtyTexture(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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diff changeset
342 int numrects, const SDL_Rect * rects)
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343 {
e136f3ffdc1b Adding software renderer implementation
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344 }
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diff changeset
345
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diff changeset
346 static void
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diff changeset
347 SDL_SW_SelectRenderTexture(SDL_Renderer * renderer, SDL_Texture * texture)
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diff changeset
348 {
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349 SDL_SW_RenderData *data = (SDL_SW_RenderData *) renderer->driverdata;
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396a35389351 Finished palettized display handling.
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diff changeset
350
396a35389351 Finished palettized display handling.
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351 if (texture) {
396a35389351 Finished palettized display handling.
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diff changeset
352 data->target = (SDL_Surface *) texture->driverdata;
396a35389351 Finished palettized display handling.
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diff changeset
353 } else {
396a35389351 Finished palettized display handling.
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diff changeset
354 data->target = data->screens[data->current_screen];
396a35389351 Finished palettized display handling.
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diff changeset
355 }
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e136f3ffdc1b Adding software renderer implementation
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diff changeset
356 }
e136f3ffdc1b Adding software renderer implementation
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diff changeset
357
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diff changeset
358 static void
1681
80a5e6a4e1e2 Working on paletted display and texture support (two different issues)
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diff changeset
359 SDL_SW_RenderFill(SDL_Renderer * renderer, const SDL_Rect * rect,
80a5e6a4e1e2 Working on paletted display and texture support (two different issues)
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diff changeset
360 Uint32 color)
1676
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parents:
diff changeset
361 {
e136f3ffdc1b Adding software renderer implementation
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parents:
diff changeset
362 SDL_SW_RenderData *data = (SDL_SW_RenderData *) renderer->driverdata;
1681
80a5e6a4e1e2 Working on paletted display and texture support (two different issues)
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diff changeset
363 SDL_Rect real_rect = *rect;
1676
e136f3ffdc1b Adding software renderer implementation
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parents:
diff changeset
364 Uint8 r, g, b, a;
e136f3ffdc1b Adding software renderer implementation
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parents:
diff changeset
365
e136f3ffdc1b Adding software renderer implementation
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parents:
diff changeset
366 a = (Uint8) ((color >> 24) & 0xFF);
e136f3ffdc1b Adding software renderer implementation
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parents:
diff changeset
367 r = (Uint8) ((color >> 16) & 0xFF);
e136f3ffdc1b Adding software renderer implementation
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parents:
diff changeset
368 g = (Uint8) ((color >> 8) & 0xFF);
e136f3ffdc1b Adding software renderer implementation
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parents:
diff changeset
369 b = (Uint8) (color & 0xFF);
e136f3ffdc1b Adding software renderer implementation
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parents:
diff changeset
370 color = SDL_MapRGBA(data->target->format, r, g, b, a);
e136f3ffdc1b Adding software renderer implementation
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parents:
diff changeset
371
1681
80a5e6a4e1e2 Working on paletted display and texture support (two different issues)
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diff changeset
372 SDL_FillRect(data->target, &real_rect, color);
1676
e136f3ffdc1b Adding software renderer implementation
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parents:
diff changeset
373 }
e136f3ffdc1b Adding software renderer implementation
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parents:
diff changeset
374
1680
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diff changeset
375 static int
1676
e136f3ffdc1b Adding software renderer implementation
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
376 SDL_SW_RenderCopy(SDL_Renderer * renderer, SDL_Texture * texture,
1681
80a5e6a4e1e2 Working on paletted display and texture support (two different issues)
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parents: 1680
diff changeset
377 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
378 int blendMode, int scaleMode)
1676
e136f3ffdc1b Adding software renderer implementation
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
379 {
e136f3ffdc1b Adding software renderer implementation
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parents:
diff changeset
380 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
381 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
382 SDL_VideoDisplay *display = SDL_GetDisplayFromWindow(window);
1676
e136f3ffdc1b Adding software renderer implementation
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
383
1684
c4aa1a2f48f1 Software YUV texture support in progress...
Sam Lantinga <slouken@libsdl.org>
parents: 1683
diff changeset
384 if (SDL_ISPIXELFORMAT_FOURCC(texture->format)) {
c4aa1a2f48f1 Software YUV texture support in progress...
Sam Lantinga <slouken@libsdl.org>
parents: 1683
diff changeset
385 SDL_Surface *target = data->target;
c4aa1a2f48f1 Software YUV texture support in progress...
Sam Lantinga <slouken@libsdl.org>
parents: 1683
diff changeset
386 void *pixels =
c4aa1a2f48f1 Software YUV texture support in progress...
Sam Lantinga <slouken@libsdl.org>
parents: 1683
diff changeset
387 (Uint8 *) target->pixels + dstrect->y * target->pitch +
c4aa1a2f48f1 Software YUV texture support in progress...
Sam Lantinga <slouken@libsdl.org>
parents: 1683
diff changeset
388 dstrect->x * target->format->BytesPerPixel;
c4aa1a2f48f1 Software YUV texture support in progress...
Sam Lantinga <slouken@libsdl.org>
parents: 1683
diff changeset
389 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
390 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
391 dstrect->w, dstrect->h, pixels,
1684
c4aa1a2f48f1 Software YUV texture support in progress...
Sam Lantinga <slouken@libsdl.org>
parents: 1683
diff changeset
392 target->pitch);
1676
e136f3ffdc1b Adding software renderer implementation
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
393 } else {
1684
c4aa1a2f48f1 Software YUV texture support in progress...
Sam Lantinga <slouken@libsdl.org>
parents: 1683
diff changeset
394 SDL_Surface *surface = (SDL_Surface *) texture->driverdata;
c4aa1a2f48f1 Software YUV texture support in progress...
Sam Lantinga <slouken@libsdl.org>
parents: 1683
diff changeset
395 SDL_Rect real_srcrect = *srcrect;
c4aa1a2f48f1 Software YUV texture support in progress...
Sam Lantinga <slouken@libsdl.org>
parents: 1683
diff changeset
396 SDL_Rect real_dstrect = *dstrect;
c4aa1a2f48f1 Software YUV texture support in progress...
Sam Lantinga <slouken@libsdl.org>
parents: 1683
diff changeset
397
c4aa1a2f48f1 Software YUV texture support in progress...
Sam Lantinga <slouken@libsdl.org>
parents: 1683
diff changeset
398 if (blendMode &
c4aa1a2f48f1 Software YUV texture support in progress...
Sam Lantinga <slouken@libsdl.org>
parents: 1683
diff changeset
399 (SDL_TextureBlendMode_Mask | SDL_TextureBlendMode_Blend)) {
c4aa1a2f48f1 Software YUV texture support in progress...
Sam Lantinga <slouken@libsdl.org>
parents: 1683
diff changeset
400 SDL_SetAlpha(surface, SDL_SRCALPHA, 0);
c4aa1a2f48f1 Software YUV texture support in progress...
Sam Lantinga <slouken@libsdl.org>
parents: 1683
diff changeset
401 } else {
c4aa1a2f48f1 Software YUV texture support in progress...
Sam Lantinga <slouken@libsdl.org>
parents: 1683
diff changeset
402 SDL_SetAlpha(surface, 0, 0);
c4aa1a2f48f1 Software YUV texture support in progress...
Sam Lantinga <slouken@libsdl.org>
parents: 1683
diff changeset
403 }
c4aa1a2f48f1 Software YUV texture support in progress...
Sam Lantinga <slouken@libsdl.org>
parents: 1683
diff changeset
404 if (scaleMode != SDL_TextureScaleMode_None &&
c4aa1a2f48f1 Software YUV texture support in progress...
Sam Lantinga <slouken@libsdl.org>
parents: 1683
diff changeset
405 (srcrect->w != dstrect->w || srcrect->h != dstrect->h)) {
c4aa1a2f48f1 Software YUV texture support in progress...
Sam Lantinga <slouken@libsdl.org>
parents: 1683
diff changeset
406 return SDL_SoftStretch(surface, &real_srcrect, data->target,
c4aa1a2f48f1 Software YUV texture support in progress...
Sam Lantinga <slouken@libsdl.org>
parents: 1683
diff changeset
407 &real_dstrect);
c4aa1a2f48f1 Software YUV texture support in progress...
Sam Lantinga <slouken@libsdl.org>
parents: 1683
diff changeset
408 } else {
c4aa1a2f48f1 Software YUV texture support in progress...
Sam Lantinga <slouken@libsdl.org>
parents: 1683
diff changeset
409 return SDL_LowerBlit(surface, &real_srcrect, data->target,
c4aa1a2f48f1 Software YUV texture support in progress...
Sam Lantinga <slouken@libsdl.org>
parents: 1683
diff changeset
410 &real_dstrect);
c4aa1a2f48f1 Software YUV texture support in progress...
Sam Lantinga <slouken@libsdl.org>
parents: 1683
diff changeset
411 }
1676
e136f3ffdc1b Adding software renderer implementation
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
412 }
e136f3ffdc1b Adding software renderer implementation
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
413 }
e136f3ffdc1b Adding software renderer implementation
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
414
1680
9488fca10677 Dummy video driver works again in high color video modes. Yay!
Sam Lantinga <slouken@libsdl.org>
parents: 1678
diff changeset
415 static int
1681
80a5e6a4e1e2 Working on paletted display and texture support (two different issues)
Sam Lantinga <slouken@libsdl.org>
parents: 1680
diff changeset
416 SDL_SW_RenderReadPixels(SDL_Renderer * renderer, const SDL_Rect * rect,
1676
e136f3ffdc1b Adding software renderer implementation
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
417 void *pixels, int pitch)
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 SDL_SW_RenderData *data = (SDL_SW_RenderData *) renderer->driverdata;
e136f3ffdc1b Adding software renderer implementation
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
420 SDL_Surface *surface = data->target;
e136f3ffdc1b Adding software renderer implementation
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
421 Uint8 *src, *dst;
e136f3ffdc1b Adding software renderer implementation
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
422 int row;
e136f3ffdc1b Adding software renderer implementation
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
423 size_t length;
e136f3ffdc1b Adding software renderer implementation
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
424
e136f3ffdc1b Adding software renderer implementation
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
425 src =
e136f3ffdc1b Adding software renderer implementation
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
426 (Uint8 *) surface->pixels + rect->y * surface->pitch +
e136f3ffdc1b Adding software renderer implementation
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
427 rect->x * surface->format->BytesPerPixel;
e136f3ffdc1b Adding software renderer implementation
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
428 dst = (Uint8 *) pixels;
e136f3ffdc1b Adding software renderer implementation
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
429 length = rect->w * surface->format->BytesPerPixel;
e136f3ffdc1b Adding software renderer implementation
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
430 for (row = 0; row < rect->h; ++row) {
e136f3ffdc1b Adding software renderer implementation
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
431 SDL_memcpy(dst, src, length);
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432 src += surface->pitch;
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433 dst += pitch;
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434 }
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435 return 0;
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436 }
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437
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438 static int
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439 SDL_SW_RenderWritePixels(SDL_Renderer * renderer, const SDL_Rect * rect,
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440 const void *pixels, int pitch)
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441 {
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442 SDL_SW_RenderData *data = (SDL_SW_RenderData *) renderer->driverdata;
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443 SDL_Surface *surface = data->target;
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444 Uint8 *src, *dst;
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445 int row;
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446 size_t length;
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447
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448 src = (Uint8 *) pixels;
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449 dst =
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450 (Uint8 *) surface->pixels + rect->y * surface->pitch +
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451 rect->x * surface->format->BytesPerPixel;
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452 length = rect->w * surface->format->BytesPerPixel;
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453 for (row = 0; row < rect->h; ++row) {
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454 SDL_memcpy(dst, src, length);
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455 src += pitch;
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456 dst += surface->pitch;
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457 }
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458 return 0;
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459 }
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460
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461 static void
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462 SDL_SW_RenderPresent(SDL_Renderer * renderer)
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463 {
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464 SDL_SW_RenderData *data = (SDL_SW_RenderData *) renderer->driverdata;
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465 SDL_Surface *surface = data->screens[data->current_screen];
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466 SDL_Rect rect;
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467 int new_screen;
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468
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469 /* Send the data to the display */
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470 /* FIXME: implement dirty rect updates */
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471 rect.x = 0;
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472 rect.y = 0;
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473 rect.w = surface->w;
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474 rect.h = surface->h;
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475 data->renderer->RenderWritePixels(data->renderer, &rect, surface->pixels,
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476 surface->pitch);
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477 data->renderer->RenderPresent(data->renderer);
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478
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479 /* Update the flipping chain, if any */
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480 if (renderer->info.flags & SDL_Renderer_PresentFlip2) {
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481 new_screen = (data->current_screen + 1) % 2;
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482 } else if (renderer->info.flags & SDL_Renderer_PresentFlip3) {
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483 new_screen = (data->current_screen + 1) % 3;
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484 } else {
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485 new_screen = 0;
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486 }
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487 if (data->target == data->screens[data->current_screen]) {
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488 data->target = data->screens[new_screen];
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489 }
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490 data->current_screen = new_screen;
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491 }
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diff changeset
492
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493 static void
1676
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494 SDL_SW_DestroyTexture(SDL_Renderer * renderer, SDL_Texture * texture)
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495 {
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496 if (SDL_ISPIXELFORMAT_FOURCC(texture->format)) {
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497 SDL_SW_DestroyYUVTexture((SDL_SW_YUVTexture *) texture->driverdata);
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498 } else {
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499 SDL_Surface *surface = (SDL_Surface *) texture->driverdata;
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500
1684
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501 SDL_FreeSurface(surface);
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502 }
1676
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503 }
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diff changeset
504
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505 static void
1676
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diff changeset
506 SDL_SW_DestroyRenderer(SDL_Renderer * renderer)
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parents:
diff changeset
507 {
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diff changeset
508 SDL_SW_RenderData *data = (SDL_SW_RenderData *) renderer->driverdata;
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parents:
diff changeset
509 int i;
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parents:
diff changeset
510
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diff changeset
511 if (data) {
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parents:
diff changeset
512 for (i = 0; i < SDL_arraysize(data->screens); ++i) {
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parents:
diff changeset
513 if (data->screens[i]) {
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parents:
diff changeset
514 SDL_FreeSurface(data->screens[i]);
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parents:
diff changeset
515 }
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parents:
diff changeset
516 }
e136f3ffdc1b Adding software renderer implementation
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parents:
diff changeset
517 SDL_free(data);
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parents:
diff changeset
518 }
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parents:
diff changeset
519 SDL_free(renderer);
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parents:
diff changeset
520 }
e136f3ffdc1b Adding software renderer implementation
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parents:
diff changeset
521
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diff changeset
522 /* vi: set ts=4 sw=4 expandtab: */