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annotate src/video/SDL_renderer_sw.c @ 1680:9488fca10677 SDL-1.3

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Dummy video driver works again in high color video modes. Yay!
author Sam Lantinga <slouken@libsdl.org>
date Wed, 14 Jun 2006 08:41:13 +0000
parents 90bf530ced8e
children 80a5e6a4e1e2
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, SDL_Color * colors,
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38 int firstcolor, int ncolors);
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39 static int SDL_SW_UpdateTexture(SDL_Renderer * renderer,
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40 SDL_Texture * texture, SDL_Rect * rect,
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41 const void *pixels, int pitch);
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42 static int SDL_SW_LockTexture(SDL_Renderer * renderer, SDL_Texture * texture,
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43 SDL_Rect * rect, int markDirty, void **pixels,
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44 int *pitch);
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45 static void SDL_SW_UnlockTexture(SDL_Renderer * renderer,
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46 SDL_Texture * texture);
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47 static void SDL_SW_DirtyTexture(SDL_Renderer * renderer,
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48 SDL_Texture * texture, int numrects,
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49 SDL_Rect * rects);
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50 static void SDL_SW_SelectRenderTexture(SDL_Renderer * renderer,
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51 SDL_Texture * texture);
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52 static void SDL_SW_RenderFill(SDL_Renderer * renderer, SDL_Rect * rect,
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53 Uint32 color);
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54 static int SDL_SW_RenderCopy(SDL_Renderer * renderer, SDL_Texture * texture,
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55 SDL_Rect * srcrect, SDL_Rect * dstrect,
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56 int blendMode, int scaleMode);
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57 static int SDL_SW_RenderReadPixels(SDL_Renderer * renderer, SDL_Rect * rect,
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58 void *pixels, int pitch);
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59 static int SDL_SW_RenderWritePixels(SDL_Renderer * renderer, SDL_Rect * rect,
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60 const void *pixels, int pitch);
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61 static void SDL_SW_RenderPresent(SDL_Renderer * renderer);
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62 static void SDL_SW_DestroyTexture(SDL_Renderer * renderer,
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63 SDL_Texture * texture);
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64 static void SDL_SW_DestroyRenderer(SDL_Renderer * renderer);
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65
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66
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67 SDL_RenderDriver SDL_SW_RenderDriver = {
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68 SDL_SW_CreateRenderer,
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69 {
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70 "software",
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71 (SDL_Renderer_PresentDiscard |
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72 SDL_Renderer_PresentCopy |
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73 SDL_Renderer_PresentFlip2 |
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74 SDL_Renderer_PresentFlip3 | SDL_Renderer_RenderTarget),
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75 (SDL_TextureBlendMode_None |
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76 SDL_TextureBlendMode_Mask | SDL_TextureBlendMode_Blend),
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77 (SDL_TextureScaleMode_None | SDL_TextureScaleMode_Fast),
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78 11,
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79 {
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80 SDL_PixelFormat_Index8,
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81 SDL_PixelFormat_RGB555,
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82 SDL_PixelFormat_RGB565,
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83 SDL_PixelFormat_RGB888,
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84 SDL_PixelFormat_BGR888,
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85 SDL_PixelFormat_ARGB8888,
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86 SDL_PixelFormat_RGBA8888,
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87 SDL_PixelFormat_ABGR8888,
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88 SDL_PixelFormat_BGRA8888,
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89 SDL_PixelFormat_YUY2,
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90 SDL_PixelFormat_UYVY},
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91 32768,
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92 32768}
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93 };
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94
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95 typedef struct
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96 {
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97 int current_screen;
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98 SDL_Surface *screens[3];
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99 SDL_Surface *target;
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100 SDL_Renderer *renderer;
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101 } SDL_SW_RenderData;
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102
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103 SDL_Renderer *
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104 SDL_SW_CreateRenderer(SDL_Window * window, Uint32 flags)
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105 {
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106 SDL_DisplayMode *displayMode = &window->display->current_mode;
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107 SDL_Renderer *renderer;
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108 SDL_SW_RenderData *data;
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109 int i, n;
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110 int bpp;
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111 Uint32 Rmask, Gmask, Bmask, Amask;
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112
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113 if (!SDL_PixelFormatEnumToMasks
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114 (displayMode->format, &bpp, &Rmask, &Gmask, &Bmask, &Amask)) {
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115 SDL_SetError("Unknown display format");
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116 return NULL;
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117 }
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118
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119 renderer = (SDL_Renderer *) SDL_malloc(sizeof(*renderer));
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120 if (!renderer) {
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121 SDL_OutOfMemory();
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122 return NULL;
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123 }
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124 SDL_zerop(renderer);
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125
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126 data = (SDL_SW_RenderData *) SDL_malloc(sizeof(*data));
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127 if (!data) {
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128 SDL_SW_DestroyRenderer(renderer);
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129 SDL_OutOfMemory();
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130 return NULL;
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131 }
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132 SDL_zerop(data);
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133
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134 renderer->CreateTexture = SDL_SW_CreateTexture;
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135 renderer->QueryTexturePixels = SDL_SW_QueryTexturePixels;
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136 renderer->SetTexturePalette = SDL_SW_SetTexturePalette;
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137 renderer->UpdateTexture = SDL_SW_UpdateTexture;
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138 renderer->LockTexture = SDL_SW_LockTexture;
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139 renderer->UnlockTexture = SDL_SW_UnlockTexture;
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140 renderer->DirtyTexture = SDL_SW_DirtyTexture;
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141 renderer->SelectRenderTexture = SDL_SW_SelectRenderTexture;
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142 renderer->RenderFill = SDL_SW_RenderFill;
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143 renderer->RenderCopy = SDL_SW_RenderCopy;
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144 renderer->RenderReadPixels = SDL_SW_RenderReadPixels;
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145 renderer->RenderWritePixels = SDL_SW_RenderWritePixels;
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146 renderer->RenderPresent = SDL_SW_RenderPresent;
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147 renderer->DestroyTexture = SDL_SW_DestroyTexture;
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148 renderer->DestroyRenderer = SDL_SW_DestroyRenderer;
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149 renderer->info = SDL_SW_RenderDriver.info;
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150 renderer->window = window;
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151 renderer->driverdata = data;
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152
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153 renderer->info.flags = SDL_Renderer_RenderTarget;
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154
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diff changeset
155 if (flags & SDL_Renderer_PresentFlip2) {
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parents:
diff changeset
156 renderer->info.flags |= SDL_Renderer_PresentFlip2;
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parents:
diff changeset
157 n = 2;
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parents:
diff changeset
158 } else if (flags & SDL_Renderer_PresentFlip3) {
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parents:
diff changeset
159 renderer->info.flags |= SDL_Renderer_PresentFlip3;
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parents:
diff changeset
160 n = 3;
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parents:
diff changeset
161 } else {
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diff changeset
162 renderer->info.flags |= SDL_Renderer_PresentCopy;
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diff changeset
163 n = 1;
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parents:
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164 }
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parents:
diff changeset
165 for (i = 0; i < n; ++i) {
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diff changeset
166 data->screens[i] =
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167 SDL_CreateRGBSurface(0, window->w, window->h, bpp, Rmask, Gmask,
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168 Bmask, Amask);
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169 if (!data->screens[i]) {
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170 SDL_SW_DestroyRenderer(renderer);
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diff changeset
171 return NULL;
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parents:
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172 }
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173 }
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174 data->current_screen = 0;
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175 data->target = data->screens[0];
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176
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177 /* Find a render driver that we can use to display data */
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178 for (i = 0; i < window->display->num_render_drivers; ++i) {
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179 SDL_RenderDriver *driver = &window->display->render_drivers[i];
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180 if (driver->info.name != SDL_SW_RenderDriver.info.name) {
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diff changeset
181 data->renderer =
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182 driver->CreateRenderer(window, SDL_Renderer_PresentDiscard);
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183 if (data->renderer) {
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diff changeset
184 break;
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185 }
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186 }
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187 }
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188 if (i == window->display->num_render_drivers) {
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189 SDL_SW_DestroyRenderer(renderer);
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190 SDL_SetError("Couldn't find display render driver");
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191 return NULL;
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192 }
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193 return renderer;
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194 }
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195
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196 static int
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197 SDL_SW_CreateTexture(SDL_Renderer * renderer, SDL_Texture * texture)
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198 {
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199 SDL_Surface *surface;
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200 int bpp;
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201 Uint32 Rmask, Gmask, Bmask, Amask;
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202
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diff changeset
203 if (SDL_ISPIXELFORMAT_FOURCC(texture->format)) {
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parents:
diff changeset
204 /* FIXME: implement this */
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diff changeset
205 return -1;
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parents:
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206 }
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parents:
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207
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diff changeset
208 if (!SDL_PixelFormatEnumToMasks
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diff changeset
209 (texture->format, &bpp, &Rmask, &Gmask, &Bmask, &Amask)) {
e136f3ffdc1b Adding software renderer implementation
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210 SDL_SetError("Unknown texture format");
e136f3ffdc1b Adding software renderer implementation
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diff changeset
211 return -1;
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parents:
diff changeset
212 }
e136f3ffdc1b Adding software renderer implementation
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parents:
diff changeset
213
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diff changeset
214 surface =
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diff changeset
215 SDL_CreateRGBSurface(0, texture->w, texture->h, bpp, Rmask, Gmask,
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diff changeset
216 Bmask, Amask);
e136f3ffdc1b Adding software renderer implementation
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diff changeset
217 if (!surface) {
e136f3ffdc1b Adding software renderer implementation
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diff changeset
218 return -1;
e136f3ffdc1b Adding software renderer implementation
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parents:
diff changeset
219 }
e136f3ffdc1b Adding software renderer implementation
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diff changeset
220
e136f3ffdc1b Adding software renderer implementation
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diff changeset
221 texture->driverdata = surface;
e136f3ffdc1b Adding software renderer implementation
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diff changeset
222 return 0;
e136f3ffdc1b Adding software renderer implementation
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parents:
diff changeset
223 }
e136f3ffdc1b Adding software renderer implementation
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diff changeset
224
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225 static int
1678
90bf530ced8e SDL_SetVideoMode() compiles now...
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226 SDL_SW_QueryTexturePixels(SDL_Renderer * renderer, SDL_Texture * texture,
90bf530ced8e SDL_SetVideoMode() compiles now...
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227 void **pixels, int *pitch)
90bf530ced8e SDL_SetVideoMode() compiles now...
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228 {
90bf530ced8e SDL_SetVideoMode() compiles now...
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229 SDL_Surface *surface = (SDL_Surface *) texture->driverdata;
90bf530ced8e SDL_SetVideoMode() compiles now...
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230
90bf530ced8e SDL_SetVideoMode() compiles now...
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231 *pixels = surface->pixels;
90bf530ced8e SDL_SetVideoMode() compiles now...
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232 *pitch = surface->pitch;
90bf530ced8e SDL_SetVideoMode() compiles now...
Sam Lantinga <slouken@libsdl.org>
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diff changeset
233 return 0;
90bf530ced8e SDL_SetVideoMode() compiles now...
Sam Lantinga <slouken@libsdl.org>
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234 }
90bf530ced8e SDL_SetVideoMode() compiles now...
Sam Lantinga <slouken@libsdl.org>
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235
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236 static int
9488fca10677 Dummy video driver works again in high color video modes. Yay!
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diff changeset
237 SDL_SW_SetTexturePalette(SDL_Renderer * renderer, SDL_Texture * texture,
9488fca10677 Dummy video driver works again in high color video modes. Yay!
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diff changeset
238 SDL_Color * colors, int firstcolor, int ncolors)
9488fca10677 Dummy video driver works again in high color video modes. Yay!
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diff changeset
239 {
9488fca10677 Dummy video driver works again in high color video modes. Yay!
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diff changeset
240 SDL_Surface *surface = (SDL_Surface *) texture->driverdata;
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diff changeset
241
9488fca10677 Dummy video driver works again in high color video modes. Yay!
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242 SDL_SetColors(surface, colors, firstcolor, ncolors);
9488fca10677 Dummy video driver works again in high color video modes. Yay!
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diff changeset
243 return 0;
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244 }
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245
9488fca10677 Dummy video driver works again in high color video modes. Yay!
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246 static int
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diff changeset
247 SDL_SW_UpdateTexture(SDL_Renderer * renderer, SDL_Texture * texture,
e136f3ffdc1b Adding software renderer implementation
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parents:
diff changeset
248 SDL_Rect * rect, const void *pixels, int pitch)
e136f3ffdc1b Adding software renderer implementation
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parents:
diff changeset
249 {
e136f3ffdc1b Adding software renderer implementation
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parents:
diff changeset
250 SDL_Surface *surface = (SDL_Surface *) texture->driverdata;
e136f3ffdc1b Adding software renderer implementation
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parents:
diff changeset
251 Uint8 *src, *dst;
e136f3ffdc1b Adding software renderer implementation
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parents:
diff changeset
252 int row;
e136f3ffdc1b Adding software renderer implementation
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
253 size_t length;
e136f3ffdc1b Adding software renderer implementation
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
254
e136f3ffdc1b Adding software renderer implementation
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parents:
diff changeset
255 src = (Uint8 *) pixels;
e136f3ffdc1b Adding software renderer implementation
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parents:
diff changeset
256 dst =
e136f3ffdc1b Adding software renderer implementation
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parents:
diff changeset
257 (Uint8 *) surface->pixels + rect->y * surface->pitch +
e136f3ffdc1b Adding software renderer implementation
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parents:
diff changeset
258 rect->x * surface->format->BytesPerPixel;
e136f3ffdc1b Adding software renderer implementation
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parents:
diff changeset
259 length = rect->w * surface->format->BytesPerPixel;
e136f3ffdc1b Adding software renderer implementation
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parents:
diff changeset
260 for (row = 0; row < rect->h; ++row) {
e136f3ffdc1b Adding software renderer implementation
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parents:
diff changeset
261 SDL_memcpy(dst, src, length);
e136f3ffdc1b Adding software renderer implementation
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
262 src += pitch;
e136f3ffdc1b Adding software renderer implementation
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parents:
diff changeset
263 dst += surface->pitch;
e136f3ffdc1b Adding software renderer implementation
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
264 }
e136f3ffdc1b Adding software renderer implementation
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parents:
diff changeset
265 return 0;
e136f3ffdc1b Adding software renderer implementation
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
266 }
e136f3ffdc1b Adding software renderer implementation
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parents:
diff changeset
267
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diff changeset
268 static int
1676
e136f3ffdc1b Adding software renderer implementation
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diff changeset
269 SDL_SW_LockTexture(SDL_Renderer * renderer, SDL_Texture * texture,
e136f3ffdc1b Adding software renderer implementation
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parents:
diff changeset
270 SDL_Rect * rect, int markDirty, void **pixels, int *pitch)
e136f3ffdc1b Adding software renderer implementation
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parents:
diff changeset
271 {
e136f3ffdc1b Adding software renderer implementation
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parents:
diff changeset
272 SDL_Surface *surface = (SDL_Surface *) texture->driverdata;
e136f3ffdc1b Adding software renderer implementation
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parents:
diff changeset
273
e136f3ffdc1b Adding software renderer implementation
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parents:
diff changeset
274 *pixels =
e136f3ffdc1b Adding software renderer implementation
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parents:
diff changeset
275 (void *) ((Uint8 *) surface->pixels + rect->y * surface->pitch +
e136f3ffdc1b Adding software renderer implementation
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parents:
diff changeset
276 rect->x * surface->format->BytesPerPixel);
e136f3ffdc1b Adding software renderer implementation
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parents:
diff changeset
277 *pitch = surface->pitch;
e136f3ffdc1b Adding software renderer implementation
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
278 return 0;
e136f3ffdc1b Adding software renderer implementation
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
279 }
e136f3ffdc1b Adding software renderer implementation
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
280
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diff changeset
281 static void
1676
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diff changeset
282 SDL_SW_UnlockTexture(SDL_Renderer * renderer, SDL_Texture * texture)
e136f3ffdc1b Adding software renderer implementation
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
283 {
e136f3ffdc1b Adding software renderer implementation
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
284 }
e136f3ffdc1b Adding software renderer implementation
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
285
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diff changeset
286 static void
1676
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diff changeset
287 SDL_SW_DirtyTexture(SDL_Renderer * renderer, SDL_Texture * texture,
e136f3ffdc1b Adding software renderer implementation
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parents:
diff changeset
288 int numrects, SDL_Rect * rects)
e136f3ffdc1b Adding software renderer implementation
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parents:
diff changeset
289 {
e136f3ffdc1b Adding software renderer implementation
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parents:
diff changeset
290 }
e136f3ffdc1b Adding software renderer implementation
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parents:
diff changeset
291
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diff changeset
292 static void
1676
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diff changeset
293 SDL_SW_SelectRenderTexture(SDL_Renderer * renderer, SDL_Texture * texture)
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
294 {
e136f3ffdc1b Adding software renderer implementation
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parents:
diff changeset
295 SDL_SW_RenderData *data = (SDL_SW_RenderData *) renderer->driverdata;
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parents:
diff changeset
296 data->target = (SDL_Surface *) texture->driverdata;
e136f3ffdc1b Adding software renderer implementation
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parents:
diff changeset
297 }
e136f3ffdc1b Adding software renderer implementation
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parents:
diff changeset
298
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diff changeset
299 static void
1676
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parents:
diff changeset
300 SDL_SW_RenderFill(SDL_Renderer * renderer, SDL_Rect * rect, Uint32 color)
e136f3ffdc1b Adding software renderer implementation
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parents:
diff changeset
301 {
e136f3ffdc1b Adding software renderer implementation
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parents:
diff changeset
302 SDL_SW_RenderData *data = (SDL_SW_RenderData *) renderer->driverdata;
e136f3ffdc1b Adding software renderer implementation
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parents:
diff changeset
303 Uint8 r, g, b, a;
e136f3ffdc1b Adding software renderer implementation
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parents:
diff changeset
304
e136f3ffdc1b Adding software renderer implementation
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parents:
diff changeset
305 a = (Uint8) ((color >> 24) & 0xFF);
e136f3ffdc1b Adding software renderer implementation
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parents:
diff changeset
306 r = (Uint8) ((color >> 16) & 0xFF);
e136f3ffdc1b Adding software renderer implementation
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
307 g = (Uint8) ((color >> 8) & 0xFF);
e136f3ffdc1b Adding software renderer implementation
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parents:
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308 b = (Uint8) (color & 0xFF);
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309 color = SDL_MapRGBA(data->target->format, r, g, b, a);
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310
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311 SDL_FillRect(data->target, rect, color);
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312 }
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313
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314 static int
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315 SDL_SW_RenderCopy(SDL_Renderer * renderer, SDL_Texture * texture,
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316 SDL_Rect * srcrect, SDL_Rect * dstrect, int blendMode,
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317 int scaleMode)
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318 {
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319 SDL_SW_RenderData *data = (SDL_SW_RenderData *) renderer->driverdata;
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320 SDL_Surface *surface = (SDL_Surface *) texture->driverdata;
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321
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322 if (blendMode & (SDL_TextureBlendMode_Mask | SDL_TextureBlendMode_Blend)) {
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323 SDL_SetAlpha(surface, SDL_SRCALPHA, 0);
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324 } else {
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325 SDL_SetAlpha(surface, 0, 0);
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326 }
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327 if (scaleMode != SDL_TextureScaleMode_None &&
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328 (srcrect->w != dstrect->w || srcrect->h != dstrect->h)) {
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329 return SDL_SoftStretch(surface, srcrect, data->target, dstrect);
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330 } else {
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331 return SDL_LowerBlit(surface, srcrect, data->target, dstrect);
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332 }
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333 }
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334
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335 static int
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336 SDL_SW_RenderReadPixels(SDL_Renderer * renderer, SDL_Rect * rect,
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337 void *pixels, int pitch)
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338 {
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339 SDL_SW_RenderData *data = (SDL_SW_RenderData *) renderer->driverdata;
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340 SDL_Surface *surface = data->target;
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341 Uint8 *src, *dst;
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342 int row;
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343 size_t length;
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344
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345 src =
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346 (Uint8 *) surface->pixels + rect->y * surface->pitch +
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347 rect->x * surface->format->BytesPerPixel;
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348 dst = (Uint8 *) pixels;
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349 length = rect->w * surface->format->BytesPerPixel;
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350 for (row = 0; row < rect->h; ++row) {
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351 SDL_memcpy(dst, src, length);
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352 src += surface->pitch;
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353 dst += pitch;
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354 }
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355 return 0;
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356 }
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357
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358 static int
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359 SDL_SW_RenderWritePixels(SDL_Renderer * renderer, SDL_Rect * rect,
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360 const void *pixels, int pitch)
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361 {
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362 SDL_SW_RenderData *data = (SDL_SW_RenderData *) renderer->driverdata;
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363 SDL_Surface *surface = data->target;
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364 Uint8 *src, *dst;
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365 int row;
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366 size_t length;
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367
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368 src = (Uint8 *) pixels;
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369 dst =
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370 (Uint8 *) surface->pixels + rect->y * surface->pitch +
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371 rect->x * surface->format->BytesPerPixel;
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372 length = rect->w * surface->format->BytesPerPixel;
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373 for (row = 0; row < rect->h; ++row) {
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374 SDL_memcpy(dst, src, length);
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375 src += pitch;
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376 dst += surface->pitch;
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377 }
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378 return 0;
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diff changeset
379 }
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diff changeset
380
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381 static void
1676
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382 SDL_SW_RenderPresent(SDL_Renderer * renderer)
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diff changeset
383 {
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diff changeset
384 SDL_SW_RenderData *data = (SDL_SW_RenderData *) renderer->driverdata;
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diff changeset
385 SDL_Surface *surface = data->screens[data->current_screen];
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diff changeset
386 SDL_Rect rect;
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diff changeset
387 int new_screen;
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diff changeset
388
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diff changeset
389 /* Send the data to the display */
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diff changeset
390 /* FIXME: implement dirty rect updates */
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diff changeset
391 rect.x = 0;
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392 rect.y = 0;
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diff changeset
393 rect.w = surface->w;
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diff changeset
394 rect.h = surface->h;
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diff changeset
395 data->renderer->RenderWritePixels(data->renderer, &rect, surface->pixels,
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parents:
diff changeset
396 surface->pitch);
e136f3ffdc1b Adding software renderer implementation
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diff changeset
397 data->renderer->RenderPresent(data->renderer);
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parents:
diff changeset
398
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diff changeset
399 /* Update the flipping chain, if any */
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parents:
diff changeset
400 if (renderer->info.flags & SDL_Renderer_PresentFlip2) {
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
401 new_screen = (data->current_screen + 1) % 2;
e136f3ffdc1b Adding software renderer implementation
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
402 } else if (renderer->info.flags & SDL_Renderer_PresentFlip3) {
e136f3ffdc1b Adding software renderer implementation
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
403 new_screen = (data->current_screen + 1) % 3;
e136f3ffdc1b Adding software renderer implementation
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
404 } else {
e136f3ffdc1b Adding software renderer implementation
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
405 new_screen = 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 if (data->target == data->screens[data->current_screen]) {
e136f3ffdc1b Adding software renderer implementation
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
408 data->target = data->screens[new_screen];
e136f3ffdc1b Adding software renderer implementation
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
409 }
e136f3ffdc1b Adding software renderer implementation
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
410 data->current_screen = new_screen;
e136f3ffdc1b Adding software renderer implementation
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
411 }
e136f3ffdc1b Adding software renderer implementation
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
412
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diff changeset
413 static void
1676
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diff changeset
414 SDL_SW_DestroyTexture(SDL_Renderer * renderer, SDL_Texture * texture)
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 SDL_Surface *surface = (SDL_Surface *) texture->driverdata;
e136f3ffdc1b Adding software renderer implementation
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
417
e136f3ffdc1b Adding software renderer implementation
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
418 SDL_FreeSurface(surface);
e136f3ffdc1b Adding software renderer implementation
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
419 }
e136f3ffdc1b Adding software renderer implementation
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
420
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diff changeset
421 static void
1676
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diff changeset
422 SDL_SW_DestroyRenderer(SDL_Renderer * renderer)
e136f3ffdc1b Adding software renderer implementation
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
423 {
e136f3ffdc1b Adding software renderer implementation
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
424 SDL_SW_RenderData *data = (SDL_SW_RenderData *) renderer->driverdata;
e136f3ffdc1b Adding software renderer implementation
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
425 int i;
e136f3ffdc1b Adding software renderer implementation
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
426
e136f3ffdc1b Adding software renderer implementation
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
427 if (data) {
e136f3ffdc1b Adding software renderer implementation
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
428 for (i = 0; i < SDL_arraysize(data->screens); ++i) {
e136f3ffdc1b Adding software renderer implementation
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
429 if (data->screens[i]) {
e136f3ffdc1b Adding software renderer implementation
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
430 SDL_FreeSurface(data->screens[i]);
e136f3ffdc1b Adding software renderer implementation
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
431 }
e136f3ffdc1b Adding software renderer implementation
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
432 }
e136f3ffdc1b Adding software renderer implementation
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
433 SDL_free(data);
e136f3ffdc1b Adding software renderer implementation
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
434 }
e136f3ffdc1b Adding software renderer implementation
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
435 SDL_free(renderer);
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
e136f3ffdc1b Adding software renderer implementation
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
438 /* vi: set ts=4 sw=4 expandtab: */