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annotate src/video/SDL_sysvideo.h @ 1662:782fd950bd46 SDL-1.3

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Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API. WARNING: None of the video drivers have been updated for the new API yet! The API is still under design and very fluid. The code is now run through a consistent indent format: indent -i4 -nut -nsc -br -ce The headers are being converted to automatically generate doxygen documentation.
author Sam Lantinga <slouken@libsdl.org>
date Sun, 28 May 2006 13:04:16 +0000
parents e49147870aac
children 6e7ec5cb83c3
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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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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 /* Define the SDL window structure, corresponding to toplevel windows */
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43 typedef struct SDL_Window SDL_Window;
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44
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45 struct SDL_Window
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46 {
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47 Uint32 id;
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48
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49 char *title;
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50 int x, y;
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51 int w, h;
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52 Uint32 flags;
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53
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54 SDL_Surface *surface;
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55 SDL_Surface *shadow;
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56 Uint16 *gamma;
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57
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58 void *userdata;
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59 void *driverdata;
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60 };
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61
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62 /* Define the SDL display structure
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63 This corresponds to physical monitors attached to the system.
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64 */
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65 typedef struct SDL_VideoDisplay
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66 {
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67 int num_display_modes;
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68 SDL_DisplayMode *display_modes;
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69 SDL_DisplayMode desktop_mode;
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70 SDL_DisplayMode current_mode;
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71
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72 int max_windows;
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73 int num_windows;
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74 SDL_Window *windows;
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75
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76 void *driverdata;
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77 } SDL_VideoDisplay;
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78
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79 typedef struct SDL_VideoDevice SDL_VideoDevice;
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80
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81 /* Define the SDL video driver structure */
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82 #define _THIS SDL_VideoDevice *_this
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83
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84 struct SDL_VideoDevice
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85 {
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86 /* * * */
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87 /* The name of this video driver */
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88 const char *name;
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89
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90 /* * * */
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91 /* Initialization/Query functions */
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92
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93 /* Initialize the native video subsystem, filling in the list
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94 of displays for this driver, returning 0 or -1 if there's an error.
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95 */
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96 int (*VideoInit) (_THIS);
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97
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98 /* * * */
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99 /* Display functions
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100 */
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101 /* Setting the display mode is independent of creating windows,
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102 * so when the display mode is changed, all existing windows
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103 * should have their data updated accordingly, including the
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104 * display surfaces associated with them.
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105 */
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106 int (*SetDisplayMode) (_THIS, const SDL_DisplayMode * mode);
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107
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108 /* * * */
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109 /* Window functions
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110 */
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111 int (*CreateWindow) (_THIS, SDL_Window * window);
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112 int (*CreateWindowFrom) (_THIS, SDL_Window * window, void *data);
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113 void (*SetWindowTitle) (_THIS, SDL_Window * window);
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114 void (*SetWindowPosition) (_THIS, SDL_Window * window);
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115 void (*SetWindowSize) (_THIS, SDL_Window * window);
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116 void (*ShowWindow) (_THIS, SDL_Window * window);
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117 void (*HideWindow) (_THIS, SDL_Window * window);
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118 void (*RaiseWindow) (_THIS, SDL_Window * window);
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119 void (*MaximizeWindow) (_THIS, SDL_Window * window);
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120 void (*MinimizeWindow) (_THIS, SDL_Window * window);
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121 void (*RestoreWindow) (_THIS, SDL_Window * window);
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122 void (*SetWindowGrab) (_THIS, SDL_Window * window);
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123 void (*DestroyWindow) (_THIS, SDL_Window * window);
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124
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125 SDL_Surface *(*CreateWindowSurface) (_THIS, SDL_Window * window);
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126 void (*UpdateWindowSurface) (_THIS, SDL_Window * window, int numrects,
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127 SDL_Rect * rects);
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128 void (*FlipWindowSurface) (_THIS, SDL_Window * window);
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129
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130 /* Sets the color entries { firstcolor .. (firstcolor+ncolors-1) }
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131 of the physical palette to those in 'colors'. If the device is
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132 using a software palette (SDL_HWPALETTE not set), then the
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133 changes are reflected in the logical palette of the screen
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134 as well.
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135 The return value is 1 if all entries could be set properly
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136 or 0 otherwise.
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137 */
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138 int (*SetWindowColors) (_THIS, SDL_Window * window,
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139 int firstcolor, int ncolors, SDL_Color * colors);
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140
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141 /* Get some platform dependent window information */
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142 SDL_bool (*GetWindowWMInfo) (_THIS, SDL_Window * window,
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143 SDL_SysWMinfo * info);
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144
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145 /* Create a YUV video surface (possibly overlay) of the given
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146 format. The hardware should be able to perform at least 2x
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147 scaling on display.
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148 */
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149 SDL_Overlay *(*CreateYUVOverlay) (_THIS, int width, int height,
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150 Uint32 format, SDL_Surface * display);
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151
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152 /* Reverse the effects VideoInit() -- called if VideoInit() fails
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153 or if the application is shutting down the video subsystem.
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154 */
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155 void (*VideoQuit) (_THIS);
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156
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157 /* * * */
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158 /* Hardware acceleration functions */
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159
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160 /* Information about the video hardware */
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161 SDL_VideoInfo info;
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162
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163 /* The pixel format used when SDL_CreateRGBSurface creates SDL_HWSURFACEs with alpha */
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164 SDL_PixelFormat *displayformatalphapixel;
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165
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166 /* Allocates a surface in video memory */
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167 int (*AllocHWSurface) (_THIS, SDL_Surface * surface);
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168
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169 /* Sets the hardware accelerated blit function, if any, based
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170 on the current flags of the surface (colorkey, alpha, etc.)
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171 */
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172 int (*CheckHWBlit) (_THIS, SDL_Surface * src, SDL_Surface * dst);
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173
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174 /* Fills a surface rectangle with the given color */
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175 int (*FillHWRect) (_THIS, SDL_Surface * dst, SDL_Rect * rect,
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176 Uint32 color);
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177
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178 /* Sets video mem colorkey and accelerated blit function */
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179 int (*SetHWColorKey) (_THIS, SDL_Surface * surface, Uint32 key);
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180
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181 /* Sets per surface hardware alpha value */
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182 int (*SetHWAlpha) (_THIS, SDL_Surface * surface, Uint8 value);
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183
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184 /* Returns a readable/writable surface */
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185 int (*LockHWSurface) (_THIS, SDL_Surface * surface);
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186 void (*UnlockHWSurface) (_THIS, SDL_Surface * surface);
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187
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188 /* Frees a previously allocated video surface */
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189 void (*FreeHWSurface) (_THIS, SDL_Surface * surface);
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190
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191 /* * * */
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192 /* Gamma support */
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193
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194 /* Set the gamma correction directly (emulated with gamma ramps) */
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195 int (*SetGamma) (_THIS, float red, float green, float blue);
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196
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197 /* Get the gamma correction directly (emulated with gamma ramps) */
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198 int (*GetGamma) (_THIS, float *red, float *green, float *blue);
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199
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200 /* Set the gamma ramp */
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201 int (*SetGammaRamp) (_THIS, Uint16 * ramp);
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202
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203 /* Get the gamma ramp */
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204 int (*GetGammaRamp) (_THIS, Uint16 * ramp);
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205
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206 /* * * */
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207 /* OpenGL support */
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208
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209 /* Sets the dll to use for OpenGL and loads it */
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210 int (*GL_LoadLibrary) (_THIS, const char *path);
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211
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212 /* Retrieves the address of a function in the gl library */
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213 void *(*GL_GetProcAddress) (_THIS, const char *proc);
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214
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215 /* Get attribute information from the windowing system. */
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216 int (*GL_GetAttribute) (_THIS, SDL_GLattr attrib, int *value);
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217
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218 /* Make the context associated with this driver current */
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219 int (*GL_MakeCurrent) (_THIS);
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220
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221 /* Swap the current buffers in double buffer mode. */
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222 void (*GL_SwapBuffers) (_THIS);
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223
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224 /* OpenGL functions for glSDL */
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225 #if SDL_VIDEO_OPENGL
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226 #if !defined(__WIN32__)
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227 #define WINAPI
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228 #endif
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229 #define SDL_PROC(ret,func,params) ret (WINAPI *func) params;
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230 #include "SDL_glfuncs.h"
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231 #undef SDL_PROC
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232
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233 /* Texture id */
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234 GLuint texture;
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235
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236 int is_32bit;
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237 #endif
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238
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239 /* * * */
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240 /* Cursor manager functions */
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241
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242 /* Free a window manager cursor
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243 This function can be NULL if CreateWMCursor is also NULL.
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244 */
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245 void (*FreeWMCursor) (_THIS, WMcursor * cursor);
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246
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247 /* If not NULL, create a black/white window manager cursor */
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248 WMcursor *(*CreateWMCursor) (_THIS,
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249 Uint8 * data, Uint8 * mask, int w, int h,
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250 int hot_x, int hot_y);
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251
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252 /* Show the specified cursor, or hide if cursor is NULL */
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253 int (*ShowWMCursor) (_THIS, WMcursor * cursor);
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254
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255 /* Warp the window manager cursor to (x,y)
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256 If NULL, a mouse motion event is posted internally.
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257 */
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258 void (*WarpWMCursor) (_THIS, Uint16 x, Uint16 y);
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259
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260 /* If not NULL, this is called when a mouse motion event occurs */
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261 void (*MoveWMCursor) (_THIS, int x, int y);
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262
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263 /* Determine whether the mouse should be in relative mode or not.
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264 This function is called when the input grab state or cursor
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265 visibility state changes.
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266 If the cursor is not visible, and the input is grabbed, the
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267 driver can place the mouse in relative mode, which may result
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268 in higher accuracy sampling of the pointer motion.
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269 */
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270 void (*CheckMouseMode) (_THIS);
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271
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272 /* * * */
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273 /* Event manager functions */
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274
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275 /* Initialize keyboard mapping for this driver */
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276 void (*InitOSKeymap) (_THIS);
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277
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278 /* Handle any queued OS events */
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279 void (*PumpEvents) (_THIS);
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280
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281 /* * * */
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282 /* Data common to all drivers */
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283 int num_displays;
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284 SDL_VideoDisplay *displays;
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285 int current_display;
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286 Uint32 next_window_id;
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287
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288 /* Driver information flags */
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289
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290 /* * * */
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291 /* Data used by the GL drivers */
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292 struct
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293 {
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294 int red_size;
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295 int green_size;
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296 int blue_size;
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297 int alpha_size;
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298 int depth_size;
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299 int buffer_size;
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300 int stencil_size;
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301 int double_buffer;
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302 int accum_red_size;
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303 int accum_green_size;
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304 int accum_blue_size;
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305 int accum_alpha_size;
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306 int stereo;
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307 int multisamplebuffers;
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308 int multisamplesamples;
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309 int accelerated;
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310 int swap_control;
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311 int driver_loaded;
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312 char driver_path[256];
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313 void *dll_handle;
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314 } gl_config;
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315
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316 /* * * */
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317 /* Data private to this driver */
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318 struct SDL_PrivateVideoData *hidden;
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319 struct SDL_PrivateGLData *gl_data;
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320
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321 /* * * */
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322 /* The function used to dispose of this structure */
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323 void (*free) (_THIS);
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324 };
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325 #undef _THIS
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326
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327 typedef struct VideoBootStrap
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328 {
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329 const char *name;
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330 const char *desc;
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331 int (*available) (void);
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332 SDL_VideoDevice *(*create) (int devindex);
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333 } VideoBootStrap;
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334
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335 #if SDL_VIDEO_DRIVER_QUARTZ
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336 extern VideoBootStrap QZ_bootstrap;
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337 #endif
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338 #if SDL_VIDEO_DRIVER_X11
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339 extern VideoBootStrap X11_bootstrap;
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340 #endif
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341 #if SDL_VIDEO_DRIVER_DGA
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342 extern VideoBootStrap DGA_bootstrap;
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343 #endif
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344 #if SDL_VIDEO_DRIVER_NANOX
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345 extern VideoBootStrap NX_bootstrap;
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346 #endif
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347 #if SDL_VIDEO_DRIVER_IPOD
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348 extern VideoBootStrap iPod_bootstrap;
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349 #endif
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350 #if SDL_VIDEO_DRIVER_QTOPIA
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351 extern VideoBootStrap Qtopia_bootstrap;
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352 #endif
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353 #if SDL_VIDEO_DRIVER_WSCONS
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354 extern VideoBootStrap WSCONS_bootstrap;
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355 #endif
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356 #if SDL_VIDEO_DRIVER_FBCON
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357 extern VideoBootStrap FBCON_bootstrap;
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358 #endif
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359 #if SDL_VIDEO_DRIVER_DIRECTFB
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360 extern VideoBootStrap DirectFB_bootstrap;
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361 #endif
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362 #if SDL_VIDEO_DRIVER_PS2GS
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363 extern VideoBootStrap PS2GS_bootstrap;
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364 #endif
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365 #if SDL_VIDEO_DRIVER_GGI
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366 extern VideoBootStrap GGI_bootstrap;
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367 #endif
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368 #if SDL_VIDEO_DRIVER_VGL
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369 extern VideoBootStrap VGL_bootstrap;
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370 #endif
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371 #if SDL_VIDEO_DRIVER_SVGALIB
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372 extern VideoBootStrap SVGALIB_bootstrap;
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373 #endif
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374 #if SDL_VIDEO_DRIVER_GAPI
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375 extern VideoBootStrap GAPI_bootstrap;
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376 #endif
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377 #if SDL_VIDEO_DRIVER_WINDIB
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378 extern VideoBootStrap WINDIB_bootstrap;
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379 #endif
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380 #if SDL_VIDEO_DRIVER_DDRAW
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381 extern VideoBootStrap DIRECTX_bootstrap;
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382 #endif
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383 #if SDL_VIDEO_DRIVER_BWINDOW
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384 extern VideoBootStrap BWINDOW_bootstrap;
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385 #endif
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386 #if SDL_VIDEO_DRIVER_TOOLBOX
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387 extern VideoBootStrap TOOLBOX_bootstrap;
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388 #endif
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389 #if SDL_VIDEO_DRIVER_DRAWSPROCKET
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390 extern VideoBootStrap DSp_bootstrap;
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391 #endif
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392 #if SDL_VIDEO_DRIVER_CYBERGRAPHICS
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393 extern VideoBootStrap CGX_bootstrap;
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394 #endif
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395 #if SDL_VIDEO_DRIVER_PHOTON
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396 extern VideoBootStrap ph_bootstrap;
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397 #endif
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398 #if SDL_VIDEO_DRIVER_EPOC
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399 extern VideoBootStrap EPOC_bootstrap;
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400 #endif
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401 #if SDL_VIDEO_DRIVER_XBIOS
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402 extern VideoBootStrap XBIOS_bootstrap;
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403 #endif
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404 #if SDL_VIDEO_DRIVER_GEM
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405 extern VideoBootStrap GEM_bootstrap;
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406 #endif
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407 #if SDL_VIDEO_DRIVER_PICOGUI
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408 extern VideoBootStrap PG_bootstrap;
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409 #endif
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410 #if SDL_VIDEO_DRIVER_DC
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411 extern VideoBootStrap DC_bootstrap;
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412 #endif
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413 #if SDL_VIDEO_DRIVER_RISCOS
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414 extern VideoBootStrap RISCOS_bootstrap;
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415 #endif
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416 #if SDL_VIDEO_DRIVER_OS2FS
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417 extern VideoBootStrap OS2FSLib_bootstrap;
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418 #endif
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419 #if SDL_VIDEO_DRIVER_AALIB
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420 extern VideoBootStrap AALIB_bootstrap;
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421 #endif
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422 #if SDL_VIDEO_DRIVER_DUMMY
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423 extern VideoBootStrap DUMMY_bootstrap;
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424 #endif
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425 #if SDL_VIDEO_DRIVER_GLSDL
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426 extern VideoBootStrap glSDL_bootstrap;
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427 #endif
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428
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429 #define SDL_CurrentDisplay (_this->displays[_this->current_display])
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430 #define SDL_CurrentWindow (SDL_CurrentDisplay.windows[0])
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431 #define SDL_VideoSurface ((_this && SDL_CurrentDisplay.num_windows > 0) ? SDL_CurrentWindow.surface : NULL)
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432 #define SDL_ShadowSurface ((_this && SDL_CurrentDisplay.num_windows > 0) ? SDL_CurrentWindow.shadow : NULL)
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433 #define SDL_PublicSurface (SDL_ShadowSurface ? SDL_ShadowSurface : SDL_VideoSurface)
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434
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435 extern SDL_VideoDevice *SDL_GetVideoDevice ();
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436 extern void SDL_AddBasicVideoDisplay (const SDL_DisplayMode * desktop_mode);
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437 extern void SDL_AddVideoDisplay (SDL_VideoDisplay * display);
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438 extern void SDL_AddDisplayMode (int display, const SDL_DisplayMode * mode);
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439 extern SDL_Window *SDL_GetWindowFromSurface (SDL_Surface * surface);
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440
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441 #endif /* _SDL_sysvideo_h */
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442
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443 /* vi: set ts=4 sw=4 expandtab: */