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annotate src/video/SDL_sysvideo.h @ 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 7ae8018b2e5d
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 #ifndef _SDL_sysvideo_h
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25 #define _SDL_sysvideo_h
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26
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27 #include "SDL_mouse.h"
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28 #define SDL_PROTOTYPES_ONLY
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29 #include "SDL_syswm.h"
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30 #undef SDL_PROTOTYPES_ONLY
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31
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32 /* This file prototypes the video driver implementation.
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33 This is designed to be easily converted to C++ in the future.
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34 */
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35
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36 #if SDL_VIDEO_OPENGL
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37 #include "SDL_opengl.h"
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38 #endif /* SDL_VIDEO_OPENGL */
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39
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40 /* The SDL video driver */
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41
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42 typedef struct SDL_Window SDL_Window;
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43 typedef struct SDL_Texture SDL_Texture;
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44 typedef struct SDL_Renderer SDL_Renderer;
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45 typedef struct SDL_RenderDriver SDL_RenderDriver;
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46 typedef struct SDL_VideoDisplay SDL_VideoDisplay;
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47 typedef struct SDL_VideoDevice SDL_VideoDevice;
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48
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49 /* Define the SDL texture structure */
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50 struct SDL_Texture
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51 {
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52 Uint32 id;
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53
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54 Uint32 format; /**< The pixel format of the texture */
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55 int access; /**< SDL_TextureAccess */
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56 int w; /**< The width of the texture */
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57 int h; /**< The height of the texture */
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58
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59 SDL_Renderer *renderer;
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60
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61 void *driverdata; /**< Driver specific texture representation */
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62
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63 SDL_Texture *next;
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64 };
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65
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66 /* Define the SDL renderer structure */
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67 struct SDL_Renderer
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68 {
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69 int (*CreateTexture) (SDL_Renderer * renderer, SDL_Texture * texture);
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70 int (*QueryTexturePixels) (SDL_Renderer * renderer, SDL_Texture * texture,
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71 void **pixels, int *pitch);
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72 int (*SetTexturePalette) (SDL_Renderer * renderer, SDL_Texture * texture,
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73 const SDL_Color * colors, int firstcolor,
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74 int ncolors);
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75 int (*GetTexturePalette) (SDL_Renderer * renderer, SDL_Texture * texture,
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76 SDL_Color * colors, int firstcolor,
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77 int ncolors);
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78 int (*UpdateTexture) (SDL_Renderer * renderer, SDL_Texture * texture,
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79 const SDL_Rect * rect, const void *pixels,
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80 int pitch);
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81 int (*LockTexture) (SDL_Renderer * renderer, SDL_Texture * texture,
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82 const SDL_Rect * rect, int markDirty, void **pixels,
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83 int *pitch);
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84 void (*UnlockTexture) (SDL_Renderer * renderer, SDL_Texture * texture);
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85 void (*DirtyTexture) (SDL_Renderer * renderer, SDL_Texture * texture,
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86 int numrects, const SDL_Rect * rects);
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87 void (*SelectRenderTexture) (SDL_Renderer * renderer,
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88 SDL_Texture * texture);
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89 void (*RenderFill) (SDL_Renderer * renderer, const SDL_Rect * rect,
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90 Uint32 color);
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91 int (*RenderCopy) (SDL_Renderer * renderer, SDL_Texture * texture,
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92 const SDL_Rect * srcrect, const SDL_Rect * dstrect,
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93 int blendMode, int scaleMode);
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94 int (*RenderReadPixels) (SDL_Renderer * renderer, const SDL_Rect * rect,
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95 void *pixels, int pitch);
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96 int (*RenderWritePixels) (SDL_Renderer * renderer, const SDL_Rect * rect,
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97 const void *pixels, int pitch);
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98 void (*RenderPresent) (SDL_Renderer * renderer);
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99 void (*DestroyTexture) (SDL_Renderer * renderer, SDL_Texture * texture);
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100
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101 void (*DestroyRenderer) (SDL_Renderer * renderer);
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102
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103 /* The current renderer info */
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104 SDL_RendererInfo info;
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105
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106 /* The window associated with the renderer */
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107 SDL_Window *window;
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108
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109 void *driverdata;
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110 };
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111
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112 /* Define the SDL render driver structure */
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113 struct SDL_RenderDriver
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114 {
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115 SDL_Renderer *(*CreateRenderer) (SDL_Window * window, Uint32 flags);
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116
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117 /* Info about the renderer capabilities */
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118 SDL_RendererInfo info;
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119 };
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120
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121 /* Define the SDL window structure, corresponding to toplevel windows */
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122 struct SDL_Window
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123 {
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124 Uint32 id;
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125
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126 char *title;
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127 int x, y;
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128 int w, h;
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129 Uint32 flags;
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130
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131 Uint16 *gamma;
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132
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133 SDL_VideoDisplay *display;
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134 SDL_Renderer *renderer;
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135
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136 void *userdata;
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137 void *driverdata;
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138 };
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139
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140 /* Define the SDL display structure
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141 This corresponds to physical monitors attached to the system.
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142 */
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143 struct SDL_VideoDisplay
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144 {
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145 int num_display_modes;
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146 SDL_DisplayMode *display_modes;
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147 SDL_DisplayMode desktop_mode;
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148 SDL_DisplayMode current_mode;
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149 SDL_Palette palette;
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150
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151 int num_render_drivers;
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152 SDL_RenderDriver *render_drivers;
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153
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154 int num_windows;
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155 SDL_Window *windows;
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156
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157 SDL_Renderer *current_renderer;
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158
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159 /* The hash list of textures */
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160 SDL_Texture *textures[64];
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161
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162 void *driverdata;
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163 };
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164
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165 /* Define the SDL video driver structure */
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166 #define _THIS SDL_VideoDevice *_this
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167
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168 struct SDL_VideoDevice
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169 {
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170 /* * * */
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171 /* The name of this video driver */
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172 const char *name;
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173
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174 /* * * */
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175 /* Initialization/Query functions */
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176
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177 /* Initialize the native video subsystem, filling in the list
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178 of displays for this driver, returning 0 or -1 if there's an error.
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179 */
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180 int (*VideoInit) (_THIS);
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181
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182 /* * * */
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183 /* Display functions
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184 */
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185 /* Setting the display mode is independent of creating windows,
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186 * so when the display mode is changed, all existing windows
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187 * should have their data updated accordingly, including the
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188 * display surfaces associated with them.
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189 */
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190 int (*SetDisplayMode) (_THIS, const SDL_DisplayMode * mode);
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191
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192 /* Sets the color entries of the display palette to those in 'colors'.
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193 The return value is 0 if all entries could be set properly or -1
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194 otherwise.
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195 */
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196 int (*SetDisplayPalette) (_THIS, SDL_Palette * palette);
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197
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198 /* * * */
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199 /* Window functions
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200 */
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201 int (*CreateWindow) (_THIS, SDL_Window * window);
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202 int (*CreateWindowFrom) (_THIS, SDL_Window * window, const void *data);
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203 void (*SetWindowTitle) (_THIS, SDL_Window * window);
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204 void (*SetWindowPosition) (_THIS, SDL_Window * window);
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205 void (*SetWindowSize) (_THIS, SDL_Window * window);
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206 void (*ShowWindow) (_THIS, SDL_Window * window);
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207 void (*HideWindow) (_THIS, SDL_Window * window);
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208 void (*RaiseWindow) (_THIS, SDL_Window * window);
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209 void (*MaximizeWindow) (_THIS, SDL_Window * window);
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210 void (*MinimizeWindow) (_THIS, SDL_Window * window);
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211 void (*RestoreWindow) (_THIS, SDL_Window * window);
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212 void (*SetWindowGrab) (_THIS, SDL_Window * window);
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213 void (*DestroyWindow) (_THIS, SDL_Window * window);
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214
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215 /* Get some platform dependent window information */
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216 SDL_bool(*GetWindowWMInfo) (_THIS, SDL_Window * window,
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217 SDL_SysWMinfo * info);
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218
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219 /* Reverse the effects VideoInit() -- called if VideoInit() fails
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220 or if the application is shutting down the video subsystem.
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221 */
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222 void (*VideoQuit) (_THIS);
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223
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224 /* * * */
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225 /* Gamma support */
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226
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227 /* Set the gamma correction directly (emulated with gamma ramps) */
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228 int (*SetGamma) (_THIS, float red, float green, float blue);
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229
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230 /* Get the gamma correction directly (emulated with gamma ramps) */
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231 int (*GetGamma) (_THIS, float *red, float *green, float *blue);
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232
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233 /* Set the gamma ramp */
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234 int (*SetGammaRamp) (_THIS, Uint16 * ramp);
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235
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236 /* Get the gamma ramp */
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237 int (*GetGammaRamp) (_THIS, Uint16 * ramp);
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238
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239 /* * * */
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240 /* OpenGL support */
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241
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242 /* Sets the dll to use for OpenGL and loads it */
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243 int (*GL_LoadLibrary) (_THIS, const char *path);
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244
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245 /* Retrieves the address of a function in the gl library */
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246 void *(*GL_GetProcAddress) (_THIS, const char *proc);
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247
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248 /* Get attribute information from the windowing system. */
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249 int (*GL_GetAttribute) (_THIS, SDL_GLattr attrib, int *value);
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250
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251 /* Make the context associated with this driver current */
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252 int (*GL_MakeCurrent) (_THIS);
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253
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254 /* Swap the current buffers in double buffer mode. */
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255 void (*GL_SwapBuffers) (_THIS);
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256
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257 /* OpenGL functions for glSDL */
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258 #if SDL_VIDEO_OPENGL
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259 #if !defined(__WIN32__)
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260 #define WINAPI
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261 #endif
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262 #define SDL_PROC(ret,func,params) ret (WINAPI *func) params;
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263 #include "SDL_glfuncs.h"
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264 #undef SDL_PROC
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265
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266 /* Texture id */
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267 GLuint texture;
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268
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269 int is_32bit;
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270 #endif
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271
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272 /* Determine whether the mouse should be in relative mode or not.
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273 This function is called when the input grab state or cursor
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274 visibility state changes.
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275 If the cursor is not visible, and the input is grabbed, the
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276 driver can place the mouse in relative mode, which may result
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277 in higher accuracy sampling of the pointer motion.
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278 */
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279 void (*CheckMouseMode) (_THIS);
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280
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281 /* * * */
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282 /* Event manager functions */
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283
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284 /* Handle any queued OS events */
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285 void (*PumpEvents) (_THIS);
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286
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287 /* * * */
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288 /* Data common to all drivers */
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289 int num_displays;
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290 SDL_VideoDisplay *displays;
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291 int current_display;
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292 Uint32 next_object_id;
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293
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294 /* Driver information flags */
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295
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296 /* * * */
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297 /* Data used by the GL drivers */
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298 struct
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299 {
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300 int red_size;
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301 int green_size;
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302 int blue_size;
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303 int alpha_size;
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304 int depth_size;
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305 int buffer_size;
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306 int stencil_size;
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307 int double_buffer;
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308 int accum_red_size;
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309 int accum_green_size;
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310 int accum_blue_size;
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311 int accum_alpha_size;
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312 int stereo;
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313 int multisamplebuffers;
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314 int multisamplesamples;
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315 int accelerated;
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316 int swap_control;
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317 int driver_loaded;
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318 char driver_path[256];
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319 void *dll_handle;
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320 } gl_config;
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321
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322 /* * * */
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323 /* Data private to this driver */
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324 struct SDL_PrivateVideoData *hidden;
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325 struct SDL_PrivateGLData *gl_data;
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326
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327 /* * * */
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328 /* The function used to dispose of this structure */
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329 void (*free) (_THIS);
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330 };
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331 #undef _THIS
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332
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333 typedef struct VideoBootStrap
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334 {
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335 const char *name;
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336 const char *desc;
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337 int (*available) (void);
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338 SDL_VideoDevice *(*create) (int devindex);
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339 } VideoBootStrap;
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340
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341 #if SDL_VIDEO_DRIVER_QUARTZ
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342 extern VideoBootStrap QZ_bootstrap;
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343 #endif
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344 #if SDL_VIDEO_DRIVER_X11
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345 extern VideoBootStrap X11_bootstrap;
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346 #endif
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347 #if SDL_VIDEO_DRIVER_DGA
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348 extern VideoBootStrap DGA_bootstrap;
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349 #endif
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350 #if SDL_VIDEO_DRIVER_NANOX
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351 extern VideoBootStrap NX_bootstrap;
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352 #endif
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353 #if SDL_VIDEO_DRIVER_IPOD
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354 extern VideoBootStrap iPod_bootstrap;
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355 #endif
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356 #if SDL_VIDEO_DRIVER_QTOPIA
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357 extern VideoBootStrap Qtopia_bootstrap;
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358 #endif
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359 #if SDL_VIDEO_DRIVER_WSCONS
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360 extern VideoBootStrap WSCONS_bootstrap;
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361 #endif
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362 #if SDL_VIDEO_DRIVER_FBCON
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363 extern VideoBootStrap FBCON_bootstrap;
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364 #endif
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365 #if SDL_VIDEO_DRIVER_DIRECTFB
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366 extern VideoBootStrap DirectFB_bootstrap;
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367 #endif
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368 #if SDL_VIDEO_DRIVER_PS2GS
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369 extern VideoBootStrap PS2GS_bootstrap;
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370 #endif
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371 #if SDL_VIDEO_DRIVER_GGI
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372 extern VideoBootStrap GGI_bootstrap;
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373 #endif
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374 #if SDL_VIDEO_DRIVER_VGL
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375 extern VideoBootStrap VGL_bootstrap;
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376 #endif
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377 #if SDL_VIDEO_DRIVER_SVGALIB
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378 extern VideoBootStrap SVGALIB_bootstrap;
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379 #endif
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380 #if SDL_VIDEO_DRIVER_GAPI
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381 extern VideoBootStrap GAPI_bootstrap;
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382 #endif
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383 #if SDL_VIDEO_DRIVER_WINDIB
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384 extern VideoBootStrap WINDIB_bootstrap;
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385 #endif
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386 #if SDL_VIDEO_DRIVER_DDRAW
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387 extern VideoBootStrap DIRECTX_bootstrap;
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388 #endif
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389 #if SDL_VIDEO_DRIVER_BWINDOW
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390 extern VideoBootStrap BWINDOW_bootstrap;
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391 #endif
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392 #if SDL_VIDEO_DRIVER_TOOLBOX
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393 extern VideoBootStrap TOOLBOX_bootstrap;
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394 #endif
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395 #if SDL_VIDEO_DRIVER_DRAWSPROCKET
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396 extern VideoBootStrap DSp_bootstrap;
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397 #endif
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398 #if SDL_VIDEO_DRIVER_CYBERGRAPHICS
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399 extern VideoBootStrap CGX_bootstrap;
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400 #endif
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401 #if SDL_VIDEO_DRIVER_PHOTON
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402 extern VideoBootStrap ph_bootstrap;
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403 #endif
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404 #if SDL_VIDEO_DRIVER_EPOC
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405 extern VideoBootStrap EPOC_bootstrap;
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406 #endif
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407 #if SDL_VIDEO_DRIVER_XBIOS
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408 extern VideoBootStrap XBIOS_bootstrap;
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409 #endif
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410 #if SDL_VIDEO_DRIVER_GEM
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411 extern VideoBootStrap GEM_bootstrap;
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412 #endif
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413 #if SDL_VIDEO_DRIVER_PICOGUI
433
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414 extern VideoBootStrap PG_bootstrap;
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415 #endif
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416 #if SDL_VIDEO_DRIVER_DC
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417 extern VideoBootStrap DC_bootstrap;
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418 #endif
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419 #if SDL_VIDEO_DRIVER_RISCOS
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420 extern VideoBootStrap RISCOS_bootstrap;
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421 #endif
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422 #if SDL_VIDEO_DRIVER_OS2FS
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423 extern VideoBootStrap OS2FSLib_bootstrap;
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424 #endif
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425 #if SDL_VIDEO_DRIVER_AALIB
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426 extern VideoBootStrap AALIB_bootstrap;
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427 #endif
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428 #if SDL_VIDEO_DRIVER_DUMMY
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429 extern VideoBootStrap DUMMY_bootstrap;
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430 #endif
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431 #if SDL_VIDEO_DRIVER_GLSDL
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432 extern VideoBootStrap glSDL_bootstrap;
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433 #endif
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434
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435 #define SDL_CurrentDisplay (_this->displays[_this->current_display])
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436 #define SDL_CurrentWindow (SDL_CurrentDisplay.windows[0])
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437
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438 extern SDL_VideoDevice *SDL_GetVideoDevice();
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439 extern int SDL_AddBasicVideoDisplay(const SDL_DisplayMode * desktop_mode);
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440 extern int SDL_AddVideoDisplay(const SDL_VideoDisplay * display);
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441 extern void SDL_AddDisplayMode(int displayIndex,
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442 const SDL_DisplayMode * mode);
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443 extern void SDL_AddRenderDriver(int displayIndex,
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444 const SDL_RenderDriver * driver);
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445
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446 #endif /* _SDL_sysvideo_h */
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447
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448 /* vi: set ts=4 sw=4 expandtab: */