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annotate src/video/dummy/SDL_nullrender.c @ 3197:434ce3242e1c

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Alexei Tereschenko Why not to use hardware vertex processing instead of software one if it is available in D3D render driver? With hardware processing testsprite2 runs three times faster on all videocards which I could test.
author Sam Lantinga <slouken@libsdl.org>
date Tue, 16 Jun 2009 14:34:15 +0000
parents 2133d2d300fd
children a65f7b3a2524
rev   line source
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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997-2009 Sam Lantinga
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4
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5 This library is free software; you can redistribute it and/or
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6 modify it under the terms of the GNU Lesser General Public
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7 License as published by the Free Software Foundation; either
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8 version 2.1 of the License, or (at your option) any later version.
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9
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10 This library is distributed in the hope that it will be useful,
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11 but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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13 Lesser General Public License for more details.
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14
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15 You should have received a copy of the GNU Lesser General Public
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16 License along with this library; if not, write to the Free Software
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17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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18
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19 Sam Lantinga
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20 slouken@libsdl.org
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21 */
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22 #include "SDL_config.h"
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23
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24 #include "SDL_video.h"
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25 #include "../SDL_sysvideo.h"
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26 #include "../SDL_yuv_sw_c.h"
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27 #include "../SDL_renderer_sw.h"
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28
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29
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30 /* SDL surface based renderer implementation */
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31
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32 static SDL_Renderer *SDL_DUMMY_CreateRenderer(SDL_Window * window,
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33 Uint32 flags);
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34 static int SDL_DUMMY_RenderPoint(SDL_Renderer * renderer, int x, int y);
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35 static int SDL_DUMMY_RenderLine(SDL_Renderer * renderer, int x1, int y1,
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36 int x2, int y2);
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37 static int SDL_DUMMY_RenderFill(SDL_Renderer * renderer,
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38 const SDL_Rect * rect);
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39 static int SDL_DUMMY_RenderCopy(SDL_Renderer * renderer,
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40 SDL_Texture * texture,
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41 const SDL_Rect * srcrect,
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42 const SDL_Rect * dstrect);
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43 static void SDL_DUMMY_RenderPresent(SDL_Renderer * renderer);
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44 static void SDL_DUMMY_DestroyRenderer(SDL_Renderer * renderer);
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45
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46
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47 SDL_RenderDriver SDL_DUMMY_RenderDriver = {
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48 SDL_DUMMY_CreateRenderer,
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49 {
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50 "dummy",
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51 (SDL_RENDERER_SINGLEBUFFER | SDL_RENDERER_PRESENTCOPY |
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52 SDL_RENDERER_PRESENTFLIP2 | SDL_RENDERER_PRESENTFLIP3 |
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53 SDL_RENDERER_PRESENTDISCARD),
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54 }
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55 };
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56
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57 typedef struct
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58 {
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59 int current_screen;
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60 SDL_Surface *screens[3];
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61 } SDL_DUMMY_RenderData;
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62
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63 SDL_Renderer *
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64 SDL_DUMMY_CreateRenderer(SDL_Window * window, Uint32 flags)
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65 {
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66 SDL_VideoDisplay *display = SDL_GetDisplayFromWindow(window);
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67 SDL_DisplayMode *displayMode = &display->current_mode;
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68 SDL_Renderer *renderer;
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69 SDL_DUMMY_RenderData *data;
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70 int i, n;
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71 int bpp;
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72 Uint32 Rmask, Gmask, Bmask, Amask;
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73
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74 if (!SDL_PixelFormatEnumToMasks
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75 (displayMode->format, &bpp, &Rmask, &Gmask, &Bmask, &Amask)) {
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76 SDL_SetError("Unknown display format");
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77 return NULL;
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78 }
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79
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80 renderer = (SDL_Renderer *) SDL_calloc(1, sizeof(*renderer));
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81 if (!renderer) {
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82 SDL_OutOfMemory();
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83 return NULL;
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84 }
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85
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86 data = (SDL_DUMMY_RenderData *) SDL_malloc(sizeof(*data));
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87 if (!data) {
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88 SDL_DUMMY_DestroyRenderer(renderer);
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89 SDL_OutOfMemory();
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90 return NULL;
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91 }
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92 SDL_zerop(data);
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93
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94 renderer->RenderPoint = SDL_DUMMY_RenderPoint;
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95 renderer->RenderLine = SDL_DUMMY_RenderLine;
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96 renderer->RenderFill = SDL_DUMMY_RenderFill;
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97 renderer->RenderCopy = SDL_DUMMY_RenderCopy;
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98 renderer->RenderPresent = SDL_DUMMY_RenderPresent;
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99 renderer->DestroyRenderer = SDL_DUMMY_DestroyRenderer;
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100 renderer->info.name = SDL_DUMMY_RenderDriver.info.name;
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101 renderer->info.flags = 0;
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102 renderer->window = window->id;
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103 renderer->driverdata = data;
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104 Setup_SoftwareRenderer(renderer);
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105
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106 if (flags & SDL_RENDERER_PRESENTFLIP2) {
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107 renderer->info.flags |= SDL_RENDERER_PRESENTFLIP2;
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108 n = 2;
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109 } else if (flags & SDL_RENDERER_PRESENTFLIP3) {
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110 renderer->info.flags |= SDL_RENDERER_PRESENTFLIP3;
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111 n = 3;
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112 } else {
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113 renderer->info.flags |= SDL_RENDERER_PRESENTCOPY;
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114 n = 1;
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115 }
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116 for (i = 0; i < n; ++i) {
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117 data->screens[i] =
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118 SDL_CreateRGBSurface(0, window->w, window->h, bpp, Rmask, Gmask,
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119 Bmask, Amask);
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120 if (!data->screens[i]) {
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121 SDL_DUMMY_DestroyRenderer(renderer);
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122 return NULL;
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123 }
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124 SDL_SetSurfacePalette(data->screens[i], display->palette);
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125 }
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126 data->current_screen = 0;
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127
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128 return renderer;
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129 }
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130
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diff changeset
131 static int
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132 SDL_DUMMY_RenderPoint(SDL_Renderer * renderer, int x, int y)
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133 {
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134 SDL_DUMMY_RenderData *data =
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135 (SDL_DUMMY_RenderData *) renderer->driverdata;
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136 SDL_Surface *target = data->screens[data->current_screen];
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diff changeset
137 int status;
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diff changeset
138
133601e3b255 Added RenderPiont() API
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139 if (renderer->blendMode == SDL_BLENDMODE_NONE ||
133601e3b255 Added RenderPiont() API
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140 renderer->blendMode == SDL_BLENDMODE_MASK) {
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diff changeset
141 Uint32 color =
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142 SDL_MapRGBA(target->format, renderer->r, renderer->g, renderer->b,
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143 renderer->a);
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144
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145 status = SDL_DrawPoint(target, x, y, color);
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146 } else {
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147 status =
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diff changeset
148 SDL_BlendPoint(target, x, y, renderer->blendMode, renderer->r,
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149 renderer->g, renderer->b, renderer->a);
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150 }
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diff changeset
151 return status;
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diff changeset
152 }
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153
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154 static int
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155 SDL_DUMMY_RenderLine(SDL_Renderer * renderer, int x1, int y1, int x2, int y2)
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156 {
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157 SDL_DUMMY_RenderData *data =
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158 (SDL_DUMMY_RenderData *) renderer->driverdata;
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159 SDL_Surface *target = data->screens[data->current_screen];
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160 int status;
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161
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162 if (renderer->blendMode == SDL_BLENDMODE_NONE ||
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163 renderer->blendMode == SDL_BLENDMODE_MASK) {
2888
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164 Uint32 color =
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165 SDL_MapRGBA(target->format, renderer->r, renderer->g, renderer->b,
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166 renderer->a);
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167
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168 status = SDL_DrawLine(target, x1, y1, x2, y2, color);
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169 } else {
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170 status =
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171 SDL_BlendLine(target, x1, y1, x2, y2, renderer->blendMode,
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172 renderer->r, renderer->g, renderer->b, renderer->a);
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173 }
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174 return status;
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175 }
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176
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177 static int
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178 SDL_DUMMY_RenderFill(SDL_Renderer * renderer, const SDL_Rect * rect)
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179 {
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180 SDL_DUMMY_RenderData *data =
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181 (SDL_DUMMY_RenderData *) renderer->driverdata;
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182 SDL_Surface *target = data->screens[data->current_screen];
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183 SDL_Rect real_rect = *rect;
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184 int status;
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diff changeset
185
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diff changeset
186 if (renderer->blendMode == SDL_BLENDMODE_NONE) {
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187 Uint32 color =
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diff changeset
188 SDL_MapRGBA(target->format, renderer->r, renderer->g, renderer->b,
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diff changeset
189 renderer->a);
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diff changeset
190
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191 status = SDL_FillRect(target, &real_rect, color);
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diff changeset
192 } else {
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193 status =
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194 SDL_BlendRect(target, &real_rect, renderer->blendMode,
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195 renderer->r, renderer->g, renderer->b, renderer->a);
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196 }
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197 return status;
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198 }
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199
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diff changeset
200 static int
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diff changeset
201 SDL_DUMMY_RenderCopy(SDL_Renderer * renderer, SDL_Texture * texture,
1985
8055185ae4ed Added source color and alpha modulation support.
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diff changeset
202 const SDL_Rect * srcrect, const SDL_Rect * dstrect)
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diff changeset
203 {
1912
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diff changeset
204 SDL_DUMMY_RenderData *data =
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205 (SDL_DUMMY_RenderData *) renderer->driverdata;
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diff changeset
206 SDL_Window *window = SDL_GetWindowFromID(renderer->window);
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diff changeset
207 SDL_VideoDisplay *display = SDL_GetDisplayFromWindow(window);
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diff changeset
208
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diff changeset
209 if (SDL_ISPIXELFORMAT_FOURCC(texture->format)) {
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diff changeset
210 SDL_Surface *target = data->screens[data->current_screen];
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diff changeset
211 void *pixels =
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parents: 1907
diff changeset
212 (Uint8 *) target->pixels + dstrect->y * target->pitch +
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diff changeset
213 dstrect->x * target->format->BytesPerPixel;
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diff changeset
214 return SDL_SW_CopyYUVToRGB((SDL_SW_YUVTexture *) texture->driverdata,
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diff changeset
215 srcrect, display->current_mode.format,
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diff changeset
216 dstrect->w, dstrect->h, pixels,
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diff changeset
217 target->pitch);
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diff changeset
218 } else {
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diff changeset
219 SDL_Surface *surface = (SDL_Surface *) texture->driverdata;
e079dafea2bf Implemented fully featured dummy renderer
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diff changeset
220 SDL_Surface *target = data->screens[data->current_screen];
2267
c785543d1843 Okay, still some bugs, but everything builds again...
Sam Lantinga <slouken@libsdl.org>
parents: 2262
diff changeset
221 SDL_Rect real_srcrect = *srcrect;
c785543d1843 Okay, still some bugs, but everything builds again...
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parents: 2262
diff changeset
222 SDL_Rect real_dstrect = *dstrect;
1908
e079dafea2bf Implemented fully featured dummy renderer
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parents: 1907
diff changeset
223
2267
c785543d1843 Okay, still some bugs, but everything builds again...
Sam Lantinga <slouken@libsdl.org>
parents: 2262
diff changeset
224 return SDL_LowerBlit(surface, &real_srcrect, target, &real_dstrect);
1908
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diff changeset
225 }
e079dafea2bf Implemented fully featured dummy renderer
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diff changeset
226 }
e079dafea2bf Implemented fully featured dummy renderer
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diff changeset
227
e079dafea2bf Implemented fully featured dummy renderer
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diff changeset
228 static void
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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parents:
diff changeset
229 SDL_DUMMY_RenderPresent(SDL_Renderer * renderer)
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parents:
diff changeset
230 {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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parents:
diff changeset
231 static int frame_number;
1912
8d384b647307 Setting up the OpenGL support
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diff changeset
232 SDL_DUMMY_RenderData *data =
8d384b647307 Setting up the OpenGL support
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parents: 1908
diff changeset
233 (SDL_DUMMY_RenderData *) renderer->driverdata;
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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parents:
diff changeset
234
1908
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diff changeset
235 /* Send the data to the display */
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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parents:
diff changeset
236 if (SDL_getenv("SDL_VIDEO_DUMMY_SAVE_FRAMES")) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
237 char file[128];
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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parents:
diff changeset
238 SDL_snprintf(file, sizeof(file), "SDL_window%d-%8.8d.bmp",
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
239 renderer->window, ++frame_number);
1908
e079dafea2bf Implemented fully featured dummy renderer
Sam Lantinga <slouken@libsdl.org>
parents: 1907
diff changeset
240 SDL_SaveBMP(data->screens[data->current_screen], file);
e079dafea2bf Implemented fully featured dummy renderer
Sam Lantinga <slouken@libsdl.org>
parents: 1907
diff changeset
241 }
e079dafea2bf Implemented fully featured dummy renderer
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parents: 1907
diff changeset
242
e079dafea2bf Implemented fully featured dummy renderer
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parents: 1907
diff changeset
243 /* Update the flipping chain, if any */
1965
a788656ca29a SDL constants are all uppercase.
Sam Lantinga <slouken@libsdl.org>
parents: 1912
diff changeset
244 if (renderer->info.flags & SDL_RENDERER_PRESENTFLIP2) {
1908
e079dafea2bf Implemented fully featured dummy renderer
Sam Lantinga <slouken@libsdl.org>
parents: 1907
diff changeset
245 data->current_screen = (data->current_screen + 1) % 2;
1965
a788656ca29a SDL constants are all uppercase.
Sam Lantinga <slouken@libsdl.org>
parents: 1912
diff changeset
246 } else if (renderer->info.flags & SDL_RENDERER_PRESENTFLIP3) {
1908
e079dafea2bf Implemented fully featured dummy renderer
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parents: 1907
diff changeset
247 data->current_screen = (data->current_screen + 1) % 3;
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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parents:
diff changeset
248 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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parents:
diff changeset
249 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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parents:
diff changeset
250
1908
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diff changeset
251 static void
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
252 SDL_DUMMY_DestroyRenderer(SDL_Renderer * renderer)
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
253 {
1912
8d384b647307 Setting up the OpenGL support
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parents: 1908
diff changeset
254 SDL_DUMMY_RenderData *data =
8d384b647307 Setting up the OpenGL support
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parents: 1908
diff changeset
255 (SDL_DUMMY_RenderData *) renderer->driverdata;
1908
e079dafea2bf Implemented fully featured dummy renderer
Sam Lantinga <slouken@libsdl.org>
parents: 1907
diff changeset
256 int i;
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
257
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
258 if (data) {
1908
e079dafea2bf Implemented fully featured dummy renderer
Sam Lantinga <slouken@libsdl.org>
parents: 1907
diff changeset
259 for (i = 0; i < SDL_arraysize(data->screens); ++i) {
e079dafea2bf Implemented fully featured dummy renderer
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parents: 1907
diff changeset
260 if (data->screens[i]) {
e079dafea2bf Implemented fully featured dummy renderer
Sam Lantinga <slouken@libsdl.org>
parents: 1907
diff changeset
261 SDL_FreeSurface(data->screens[i]);
e079dafea2bf Implemented fully featured dummy renderer
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parents: 1907
diff changeset
262 }
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
263 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
264 SDL_free(data);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
265 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
266 SDL_free(renderer);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
267 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
268
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
269 /* vi: set ts=4 sw=4 expandtab: */