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annotate src/video/SDL_renderer_sw.c @ 1681:80a5e6a4e1e2 SDL-1.3

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Working on paletted display and texture support (two different issues)
author Sam Lantinga <slouken@libsdl.org>
date Thu, 15 Jun 2006 07:07:07 +0000
parents 9488fca10677
children 396a35389351
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
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27
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28 /* SDL surface based renderer implementation */
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29
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30 static SDL_Renderer *SDL_SW_CreateRenderer(SDL_Window * window, Uint32 flags);
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31 static int SDL_SW_CreateTexture(SDL_Renderer * renderer,
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32 SDL_Texture * texture);
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33 static int SDL_SW_QueryTexturePixels(SDL_Renderer * renderer,
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34 SDL_Texture * texture, void **pixels,
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35 int *pitch);
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36 static int SDL_SW_SetTexturePalette(SDL_Renderer * renderer,
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37 SDL_Texture * texture,
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38 const SDL_Color * colors, int firstcolor,
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39 int ncolors);
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40 static int SDL_SW_GetTexturePalette(SDL_Renderer * renderer,
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41 SDL_Texture * texture, SDL_Color * colors,
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42 int firstcolor, int ncolors);
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43 static int SDL_SW_UpdateTexture(SDL_Renderer * renderer,
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44 SDL_Texture * texture, const SDL_Rect * rect,
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45 const void *pixels, int pitch);
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46 static int SDL_SW_LockTexture(SDL_Renderer * renderer, SDL_Texture * texture,
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47 const SDL_Rect * rect, int markDirty,
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48 void **pixels, int *pitch);
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49 static void SDL_SW_UnlockTexture(SDL_Renderer * renderer,
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50 SDL_Texture * texture);
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51 static void SDL_SW_DirtyTexture(SDL_Renderer * renderer,
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52 SDL_Texture * texture, int numrects,
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53 const SDL_Rect * rects);
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54 static void SDL_SW_SelectRenderTexture(SDL_Renderer * renderer,
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55 SDL_Texture * texture);
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56 static void SDL_SW_RenderFill(SDL_Renderer * renderer, const SDL_Rect * rect,
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57 Uint32 color);
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58 static int SDL_SW_RenderCopy(SDL_Renderer * renderer, SDL_Texture * texture,
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59 const SDL_Rect * srcrect,
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60 const SDL_Rect * dstrect, int blendMode,
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61 int scaleMode);
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62 static int SDL_SW_RenderReadPixels(SDL_Renderer * renderer,
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63 const SDL_Rect * rect, void *pixels,
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64 int pitch);
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65 static int SDL_SW_RenderWritePixels(SDL_Renderer * renderer,
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66 const SDL_Rect * rect, const void *pixels,
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67 int pitch);
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68 static void SDL_SW_RenderPresent(SDL_Renderer * renderer);
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69 static void SDL_SW_DestroyTexture(SDL_Renderer * renderer,
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70 SDL_Texture * texture);
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71 static void SDL_SW_DestroyRenderer(SDL_Renderer * renderer);
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72
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73
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74 SDL_RenderDriver SDL_SW_RenderDriver = {
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75 SDL_SW_CreateRenderer,
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76 {
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77 "software",
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78 (SDL_Renderer_PresentDiscard |
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79 SDL_Renderer_PresentCopy |
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80 SDL_Renderer_PresentFlip2 |
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81 SDL_Renderer_PresentFlip3 | SDL_Renderer_RenderTarget),
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82 (SDL_TextureBlendMode_None |
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83 SDL_TextureBlendMode_Mask | SDL_TextureBlendMode_Blend),
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84 (SDL_TextureScaleMode_None | SDL_TextureScaleMode_Fast),
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85 11,
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86 {
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87 SDL_PixelFormat_Index8,
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88 SDL_PixelFormat_RGB555,
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89 SDL_PixelFormat_RGB565,
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90 SDL_PixelFormat_RGB888,
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91 SDL_PixelFormat_BGR888,
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92 SDL_PixelFormat_ARGB8888,
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93 SDL_PixelFormat_RGBA8888,
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94 SDL_PixelFormat_ABGR8888,
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95 SDL_PixelFormat_BGRA8888,
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96 SDL_PixelFormat_YUY2,
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97 SDL_PixelFormat_UYVY},
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98 32768,
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99 32768}
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100 };
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101
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102 typedef struct
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103 {
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104 int current_screen;
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105 SDL_Surface *screens[3];
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106 SDL_Surface *target;
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107 SDL_Renderer *renderer;
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108 } SDL_SW_RenderData;
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109
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110 SDL_Renderer *
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111 SDL_SW_CreateRenderer(SDL_Window * window, Uint32 flags)
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112 {
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113 SDL_DisplayMode *displayMode = &window->display->current_mode;
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114 SDL_Renderer *renderer;
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115 SDL_SW_RenderData *data;
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116 int i, n;
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117 int bpp;
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118 Uint32 Rmask, Gmask, Bmask, Amask;
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119
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120 if (!SDL_PixelFormatEnumToMasks
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121 (displayMode->format, &bpp, &Rmask, &Gmask, &Bmask, &Amask)) {
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122 SDL_SetError("Unknown display format");
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123 return NULL;
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124 }
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125
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126 renderer = (SDL_Renderer *) SDL_malloc(sizeof(*renderer));
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127 if (!renderer) {
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128 SDL_OutOfMemory();
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129 return NULL;
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130 }
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131 SDL_zerop(renderer);
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132
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133 data = (SDL_SW_RenderData *) SDL_malloc(sizeof(*data));
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134 if (!data) {
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135 SDL_SW_DestroyRenderer(renderer);
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136 SDL_OutOfMemory();
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137 return NULL;
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138 }
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139 SDL_zerop(data);
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140
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141 renderer->CreateTexture = SDL_SW_CreateTexture;
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142 renderer->QueryTexturePixels = SDL_SW_QueryTexturePixels;
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143 renderer->SetTexturePalette = SDL_SW_SetTexturePalette;
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144 renderer->GetTexturePalette = SDL_SW_GetTexturePalette;
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145 renderer->UpdateTexture = SDL_SW_UpdateTexture;
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146 renderer->LockTexture = SDL_SW_LockTexture;
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147 renderer->UnlockTexture = SDL_SW_UnlockTexture;
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148 renderer->DirtyTexture = SDL_SW_DirtyTexture;
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149 renderer->SelectRenderTexture = SDL_SW_SelectRenderTexture;
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150 renderer->RenderFill = SDL_SW_RenderFill;
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151 renderer->RenderCopy = SDL_SW_RenderCopy;
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152 renderer->RenderReadPixels = SDL_SW_RenderReadPixels;
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153 renderer->RenderWritePixels = SDL_SW_RenderWritePixels;
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154 renderer->RenderPresent = SDL_SW_RenderPresent;
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155 renderer->DestroyTexture = SDL_SW_DestroyTexture;
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156 renderer->DestroyRenderer = SDL_SW_DestroyRenderer;
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157 renderer->info = SDL_SW_RenderDriver.info;
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158 renderer->window = window;
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159 renderer->driverdata = data;
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160
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161 renderer->info.flags = SDL_Renderer_RenderTarget;
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162
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163 if (flags & SDL_Renderer_PresentFlip2) {
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164 renderer->info.flags |= SDL_Renderer_PresentFlip2;
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165 n = 2;
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166 } else if (flags & SDL_Renderer_PresentFlip3) {
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167 renderer->info.flags |= SDL_Renderer_PresentFlip3;
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168 n = 3;
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169 } else {
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170 renderer->info.flags |= SDL_Renderer_PresentCopy;
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171 n = 1;
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172 }
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173 for (i = 0; i < n; ++i) {
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174 data->screens[i] =
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175 SDL_CreateRGBSurface(0, window->w, window->h, bpp, Rmask, Gmask,
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176 Bmask, Amask);
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177 if (!data->screens[i]) {
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178 SDL_SW_DestroyRenderer(renderer);
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179 return NULL;
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180 }
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181 }
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182 data->current_screen = 0;
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183 data->target = data->screens[0];
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184
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185 /* Find a render driver that we can use to display data */
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186 for (i = 0; i < window->display->num_render_drivers; ++i) {
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187 SDL_RenderDriver *driver = &window->display->render_drivers[i];
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188 if (driver->info.name != SDL_SW_RenderDriver.info.name) {
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189 data->renderer =
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190 driver->CreateRenderer(window, SDL_Renderer_PresentDiscard);
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191 if (data->renderer) {
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192 break;
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193 }
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194 }
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195 }
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196 if (i == window->display->num_render_drivers) {
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197 SDL_SW_DestroyRenderer(renderer);
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198 SDL_SetError("Couldn't find display render driver");
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199 return NULL;
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200 }
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201 return renderer;
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202 }
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203
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204 static int
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205 SDL_SW_CreateTexture(SDL_Renderer * renderer, SDL_Texture * texture)
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206 {
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207 SDL_Surface *surface;
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208 int bpp;
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209 Uint32 Rmask, Gmask, Bmask, Amask;
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210
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211 if (SDL_ISPIXELFORMAT_FOURCC(texture->format)) {
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diff changeset
212 /* FIXME: implement this */
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213 return -1;
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214 }
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215
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diff changeset
216 if (!SDL_PixelFormatEnumToMasks
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diff changeset
217 (texture->format, &bpp, &Rmask, &Gmask, &Bmask, &Amask)) {
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diff changeset
218 SDL_SetError("Unknown texture format");
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diff changeset
219 return -1;
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parents:
diff changeset
220 }
e136f3ffdc1b Adding software renderer implementation
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diff changeset
221
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diff changeset
222 surface =
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diff changeset
223 SDL_CreateRGBSurface(0, texture->w, texture->h, bpp, Rmask, Gmask,
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diff changeset
224 Bmask, Amask);
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diff changeset
225 if (!surface) {
e136f3ffdc1b Adding software renderer implementation
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parents:
diff changeset
226 return -1;
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parents:
diff changeset
227 }
e136f3ffdc1b Adding software renderer implementation
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diff changeset
228
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diff changeset
229 texture->driverdata = surface;
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diff changeset
230 return 0;
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parents:
diff changeset
231 }
e136f3ffdc1b Adding software renderer implementation
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232
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233 static int
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234 SDL_SW_QueryTexturePixels(SDL_Renderer * renderer, SDL_Texture * texture,
90bf530ced8e SDL_SetVideoMode() compiles now...
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diff changeset
235 void **pixels, int *pitch)
90bf530ced8e SDL_SetVideoMode() compiles now...
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236 {
90bf530ced8e SDL_SetVideoMode() compiles now...
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237 SDL_Surface *surface = (SDL_Surface *) texture->driverdata;
90bf530ced8e SDL_SetVideoMode() compiles now...
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238
90bf530ced8e SDL_SetVideoMode() compiles now...
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diff changeset
239 *pixels = surface->pixels;
90bf530ced8e SDL_SetVideoMode() compiles now...
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diff changeset
240 *pitch = surface->pitch;
90bf530ced8e SDL_SetVideoMode() compiles now...
Sam Lantinga <slouken@libsdl.org>
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diff changeset
241 return 0;
90bf530ced8e SDL_SetVideoMode() compiles now...
Sam Lantinga <slouken@libsdl.org>
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diff changeset
242 }
90bf530ced8e SDL_SetVideoMode() compiles now...
Sam Lantinga <slouken@libsdl.org>
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diff changeset
243
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diff changeset
244 static int
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diff changeset
245 SDL_SW_SetTexturePalette(SDL_Renderer * renderer, SDL_Texture * texture,
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246 const SDL_Color * colors, int firstcolor,
80a5e6a4e1e2 Working on paletted display and texture support (two different issues)
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diff changeset
247 int ncolors)
1680
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diff changeset
248 {
9488fca10677 Dummy video driver works again in high color video modes. Yay!
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diff changeset
249 SDL_Surface *surface = (SDL_Surface *) texture->driverdata;
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diff changeset
250
9488fca10677 Dummy video driver works again in high color video modes. Yay!
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251 SDL_SetColors(surface, colors, firstcolor, ncolors);
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252 return 0;
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253 }
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diff changeset
254
9488fca10677 Dummy video driver works again in high color video modes. Yay!
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diff changeset
255 static int
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diff changeset
256 SDL_SW_GetTexturePalette(SDL_Renderer * renderer, SDL_Texture * texture,
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diff changeset
257 SDL_Color * colors, int firstcolor, int ncolors)
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diff changeset
258 {
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diff changeset
259 SDL_Surface *surface = (SDL_Surface *) texture->driverdata;
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diff changeset
260
80a5e6a4e1e2 Working on paletted display and texture support (two different issues)
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diff changeset
261 SDL_memcpy(colors, &surface->format->palette->colors[firstcolor],
80a5e6a4e1e2 Working on paletted display and texture support (two different issues)
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diff changeset
262 ncolors * sizeof(*colors));
80a5e6a4e1e2 Working on paletted display and texture support (two different issues)
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diff changeset
263 return 0;
80a5e6a4e1e2 Working on paletted display and texture support (two different issues)
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diff changeset
264 }
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diff changeset
265
80a5e6a4e1e2 Working on paletted display and texture support (two different issues)
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diff changeset
266 static int
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diff changeset
267 SDL_SW_UpdateTexture(SDL_Renderer * renderer, SDL_Texture * texture,
1681
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diff changeset
268 const SDL_Rect * rect, const void *pixels, int pitch)
1676
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diff changeset
269 {
e136f3ffdc1b Adding software renderer implementation
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diff changeset
270 SDL_Surface *surface = (SDL_Surface *) texture->driverdata;
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parents:
diff changeset
271 Uint8 *src, *dst;
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parents:
diff changeset
272 int row;
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parents:
diff changeset
273 size_t length;
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parents:
diff changeset
274
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parents:
diff changeset
275 src = (Uint8 *) pixels;
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parents:
diff changeset
276 dst =
e136f3ffdc1b Adding software renderer implementation
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parents:
diff changeset
277 (Uint8 *) surface->pixels + rect->y * surface->pitch +
e136f3ffdc1b Adding software renderer implementation
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parents:
diff changeset
278 rect->x * surface->format->BytesPerPixel;
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parents:
diff changeset
279 length = rect->w * surface->format->BytesPerPixel;
e136f3ffdc1b Adding software renderer implementation
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parents:
diff changeset
280 for (row = 0; row < rect->h; ++row) {
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parents:
diff changeset
281 SDL_memcpy(dst, src, length);
e136f3ffdc1b Adding software renderer implementation
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parents:
diff changeset
282 src += pitch;
e136f3ffdc1b Adding software renderer implementation
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parents:
diff changeset
283 dst += surface->pitch;
e136f3ffdc1b Adding software renderer implementation
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parents:
diff changeset
284 }
e136f3ffdc1b Adding software renderer implementation
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parents:
diff changeset
285 return 0;
e136f3ffdc1b Adding software renderer implementation
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parents:
diff changeset
286 }
e136f3ffdc1b Adding software renderer implementation
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parents:
diff changeset
287
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diff changeset
288 static int
1676
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diff changeset
289 SDL_SW_LockTexture(SDL_Renderer * renderer, SDL_Texture * texture,
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diff changeset
290 const SDL_Rect * rect, int markDirty, void **pixels,
80a5e6a4e1e2 Working on paletted display and texture support (two different issues)
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diff changeset
291 int *pitch)
1676
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diff changeset
292 {
e136f3ffdc1b Adding software renderer implementation
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parents:
diff changeset
293 SDL_Surface *surface = (SDL_Surface *) texture->driverdata;
e136f3ffdc1b Adding software renderer implementation
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parents:
diff changeset
294
e136f3ffdc1b Adding software renderer implementation
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parents:
diff changeset
295 *pixels =
e136f3ffdc1b Adding software renderer implementation
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parents:
diff changeset
296 (void *) ((Uint8 *) surface->pixels + rect->y * surface->pitch +
e136f3ffdc1b Adding software renderer implementation
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diff changeset
297 rect->x * surface->format->BytesPerPixel);
e136f3ffdc1b Adding software renderer implementation
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diff changeset
298 *pitch = surface->pitch;
e136f3ffdc1b Adding software renderer implementation
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diff changeset
299 return 0;
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300 }
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301
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302 static void
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303 SDL_SW_UnlockTexture(SDL_Renderer * renderer, SDL_Texture * texture)
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304 {
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305 }
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diff changeset
306
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diff changeset
307 static void
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308 SDL_SW_DirtyTexture(SDL_Renderer * renderer, SDL_Texture * texture,
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309 int numrects, const SDL_Rect * rects)
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310 {
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311 }
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312
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313 static void
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314 SDL_SW_SelectRenderTexture(SDL_Renderer * renderer, SDL_Texture * texture)
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315 {
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316 SDL_SW_RenderData *data = (SDL_SW_RenderData *) renderer->driverdata;
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317 data->target = (SDL_Surface *) texture->driverdata;
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318 }
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319
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320 static void
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321 SDL_SW_RenderFill(SDL_Renderer * renderer, const SDL_Rect * rect,
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322 Uint32 color)
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323 {
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324 SDL_SW_RenderData *data = (SDL_SW_RenderData *) renderer->driverdata;
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325 SDL_Rect real_rect = *rect;
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326 Uint8 r, g, b, a;
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327
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328 a = (Uint8) ((color >> 24) & 0xFF);
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329 r = (Uint8) ((color >> 16) & 0xFF);
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330 g = (Uint8) ((color >> 8) & 0xFF);
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331 b = (Uint8) (color & 0xFF);
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332 color = SDL_MapRGBA(data->target->format, r, g, b, a);
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333
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334 SDL_FillRect(data->target, &real_rect, color);
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335 }
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336
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337 static int
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338 SDL_SW_RenderCopy(SDL_Renderer * renderer, SDL_Texture * texture,
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339 const SDL_Rect * srcrect, const SDL_Rect * dstrect,
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340 int blendMode, int scaleMode)
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341 {
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342 SDL_SW_RenderData *data = (SDL_SW_RenderData *) renderer->driverdata;
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343 SDL_Surface *surface = (SDL_Surface *) texture->driverdata;
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344 SDL_Rect real_srcrect = *srcrect;
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345 SDL_Rect real_dstrect = *dstrect;
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346
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347 if (blendMode & (SDL_TextureBlendMode_Mask | SDL_TextureBlendMode_Blend)) {
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348 SDL_SetAlpha(surface, SDL_SRCALPHA, 0);
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349 } else {
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350 SDL_SetAlpha(surface, 0, 0);
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351 }
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352 if (scaleMode != SDL_TextureScaleMode_None &&
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353 (srcrect->w != dstrect->w || srcrect->h != dstrect->h)) {
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354 return SDL_SoftStretch(surface, &real_srcrect, data->target,
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355 &real_dstrect);
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356 } else {
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357 return SDL_LowerBlit(surface, &real_srcrect, data->target,
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358 &real_dstrect);
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359 }
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360 }
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361
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362 static int
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363 SDL_SW_RenderReadPixels(SDL_Renderer * renderer, const SDL_Rect * rect,
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diff changeset
364 void *pixels, int pitch)
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diff changeset
365 {
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366 SDL_SW_RenderData *data = (SDL_SW_RenderData *) renderer->driverdata;
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367 SDL_Surface *surface = data->target;
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368 Uint8 *src, *dst;
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diff changeset
369 int row;
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diff changeset
370 size_t length;
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diff changeset
371
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diff changeset
372 src =
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diff changeset
373 (Uint8 *) surface->pixels + rect->y * surface->pitch +
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diff changeset
374 rect->x * surface->format->BytesPerPixel;
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diff changeset
375 dst = (Uint8 *) pixels;
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diff changeset
376 length = rect->w * surface->format->BytesPerPixel;
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diff changeset
377 for (row = 0; row < rect->h; ++row) {
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diff changeset
378 SDL_memcpy(dst, src, length);
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parents:
diff changeset
379 src += surface->pitch;
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diff changeset
380 dst += pitch;
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parents:
diff changeset
381 }
e136f3ffdc1b Adding software renderer implementation
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parents:
diff changeset
382 return 0;
e136f3ffdc1b Adding software renderer implementation
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
383 }
e136f3ffdc1b Adding software renderer implementation
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parents:
diff changeset
384
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diff changeset
385 static int
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diff changeset
386 SDL_SW_RenderWritePixels(SDL_Renderer * renderer, const SDL_Rect * rect,
1676
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diff changeset
387 const void *pixels, int pitch)
e136f3ffdc1b Adding software renderer implementation
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parents:
diff changeset
388 {
e136f3ffdc1b Adding software renderer implementation
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diff changeset
389 SDL_SW_RenderData *data = (SDL_SW_RenderData *) renderer->driverdata;
e136f3ffdc1b Adding software renderer implementation
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diff changeset
390 SDL_Surface *surface = data->target;
e136f3ffdc1b Adding software renderer implementation
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parents:
diff changeset
391 Uint8 *src, *dst;
e136f3ffdc1b Adding software renderer implementation
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parents:
diff changeset
392 int row;
e136f3ffdc1b Adding software renderer implementation
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parents:
diff changeset
393 size_t length;
e136f3ffdc1b Adding software renderer implementation
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parents:
diff changeset
394
e136f3ffdc1b Adding software renderer implementation
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parents:
diff changeset
395 src = (Uint8 *) pixels;
e136f3ffdc1b Adding software renderer implementation
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parents:
diff changeset
396 dst =
e136f3ffdc1b Adding software renderer implementation
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parents:
diff changeset
397 (Uint8 *) surface->pixels + rect->y * surface->pitch +
e136f3ffdc1b Adding software renderer implementation
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parents:
diff changeset
398 rect->x * surface->format->BytesPerPixel;
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parents:
diff changeset
399 length = rect->w * surface->format->BytesPerPixel;
e136f3ffdc1b Adding software renderer implementation
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parents:
diff changeset
400 for (row = 0; row < rect->h; ++row) {
e136f3ffdc1b Adding software renderer implementation
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parents:
diff changeset
401 SDL_memcpy(dst, src, length);
e136f3ffdc1b Adding software renderer implementation
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
402 src += pitch;
e136f3ffdc1b Adding software renderer implementation
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
403 dst += surface->pitch;
e136f3ffdc1b Adding software renderer implementation
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
404 }
e136f3ffdc1b Adding software renderer implementation
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
405 return 0;
e136f3ffdc1b Adding software renderer implementation
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
406 }
e136f3ffdc1b Adding software renderer implementation
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
407
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diff changeset
408 static void
1676
e136f3ffdc1b Adding software renderer implementation
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diff changeset
409 SDL_SW_RenderPresent(SDL_Renderer * renderer)
e136f3ffdc1b Adding software renderer implementation
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
410 {
e136f3ffdc1b Adding software renderer implementation
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parents:
diff changeset
411 SDL_SW_RenderData *data = (SDL_SW_RenderData *) renderer->driverdata;
e136f3ffdc1b Adding software renderer implementation
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parents:
diff changeset
412 SDL_Surface *surface = data->screens[data->current_screen];
e136f3ffdc1b Adding software renderer implementation
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parents:
diff changeset
413 SDL_Rect rect;
e136f3ffdc1b Adding software renderer implementation
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
414 int new_screen;
e136f3ffdc1b Adding software renderer implementation
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
415
e136f3ffdc1b Adding software renderer implementation
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
416 /* Send the data to the display */
e136f3ffdc1b Adding software renderer implementation
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
417 /* FIXME: implement dirty rect updates */
e136f3ffdc1b Adding software renderer implementation
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
418 rect.x = 0;
e136f3ffdc1b Adding software renderer implementation
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parents:
diff changeset
419 rect.y = 0;
e136f3ffdc1b Adding software renderer implementation
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
420 rect.w = surface->w;
e136f3ffdc1b Adding software renderer implementation
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parents:
diff changeset
421 rect.h = surface->h;
e136f3ffdc1b Adding software renderer implementation
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
422 data->renderer->RenderWritePixels(data->renderer, &rect, surface->pixels,
e136f3ffdc1b Adding software renderer implementation
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
423 surface->pitch);
e136f3ffdc1b Adding software renderer implementation
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
424 data->renderer->RenderPresent(data->renderer);
e136f3ffdc1b Adding software renderer implementation
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
425
e136f3ffdc1b Adding software renderer implementation
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
426 /* Update the flipping chain, if any */
e136f3ffdc1b Adding software renderer implementation
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
427 if (renderer->info.flags & SDL_Renderer_PresentFlip2) {
e136f3ffdc1b Adding software renderer implementation
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
428 new_screen = (data->current_screen + 1) % 2;
e136f3ffdc1b Adding software renderer implementation
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
429 } else if (renderer->info.flags & SDL_Renderer_PresentFlip3) {
e136f3ffdc1b Adding software renderer implementation
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
430 new_screen = (data->current_screen + 1) % 3;
e136f3ffdc1b Adding software renderer implementation
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
431 } else {
e136f3ffdc1b Adding software renderer implementation
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
432 new_screen = 0;
e136f3ffdc1b Adding software renderer implementation
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
433 }
e136f3ffdc1b Adding software renderer implementation
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
434 if (data->target == data->screens[data->current_screen]) {
e136f3ffdc1b Adding software renderer implementation
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
435 data->target = data->screens[new_screen];
e136f3ffdc1b Adding software renderer implementation
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
436 }
e136f3ffdc1b Adding software renderer implementation
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
437 data->current_screen = new_screen;
e136f3ffdc1b Adding software renderer implementation
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
438 }
e136f3ffdc1b Adding software renderer implementation
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
439
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diff changeset
440 static void
1676
e136f3ffdc1b Adding software renderer implementation
Sam Lantinga <slouken@libsdl.org>
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diff changeset
441 SDL_SW_DestroyTexture(SDL_Renderer * renderer, SDL_Texture * texture)
e136f3ffdc1b Adding software renderer implementation
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
442 {
e136f3ffdc1b Adding software renderer implementation
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
443 SDL_Surface *surface = (SDL_Surface *) texture->driverdata;
e136f3ffdc1b Adding software renderer implementation
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
444
e136f3ffdc1b Adding software renderer implementation
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
445 SDL_FreeSurface(surface);
e136f3ffdc1b Adding software renderer implementation
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
446 }
e136f3ffdc1b Adding software renderer implementation
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
447
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diff changeset
448 static void
1676
e136f3ffdc1b Adding software renderer implementation
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
449 SDL_SW_DestroyRenderer(SDL_Renderer * renderer)
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450 {
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451 SDL_SW_RenderData *data = (SDL_SW_RenderData *) renderer->driverdata;
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452 int i;
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453
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454 if (data) {
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455 for (i = 0; i < SDL_arraysize(data->screens); ++i) {
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456 if (data->screens[i]) {
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457 SDL_FreeSurface(data->screens[i]);
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458 }
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459 }
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460 SDL_free(data);
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461 }
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462 SDL_free(renderer);
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463 }
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464
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465 /* vi: set ts=4 sw=4 expandtab: */