annotate src/video/SDL_sysvideo.h @ 630:550bccdf04bd

Added initial support for RISC OS (thanks Peter Naulls!)
author Sam Lantinga <slouken@libsdl.org>
date Thu, 29 May 2003 04:44:13 +0000
parents dad72daf44b3
children 9c42ee1b7d77
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, 1998, 1999, 2000, 2001, 2002 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 Library General Public
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7 License as published by the Free Software Foundation; either
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8 version 2 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 Library 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 Library General Public
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16 License along with this library; if not, write to the Free
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17 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 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
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23 #ifdef SAVE_RCSID
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24 static char rcsid =
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25 "@(#) $Id$";
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26 #endif
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27
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28 #ifndef _SDL_sysvideo_h
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29 #define _SDL_sysvideo_h
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30
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31 #include "SDL_mouse.h"
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32 #define SDL_PROTOTYPES_ONLY
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33 #include "SDL_syswm.h"
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34 #undef SDL_PROTOTYPES_ONLY
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35
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36 /* This file prototypes the video driver implementation.
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37 This is designed to be easily converted to C++ in the future.
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38 */
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39
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40 /* OpenGL is pretty much available on all Windows systems */
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41 #ifdef WIN32
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42 #ifndef _WIN32_WCE
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43 #define HAVE_OPENGL
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44 #endif
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45 #define WIN32_LEAN_AND_MEAN
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46 #include <windows.h>
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47 #endif
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48
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49 #ifdef HAVE_OPENGL
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50 #ifdef MACOSX
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51 #include <OpenGL/gl.h> /* OpenGL.framework */
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52 #else
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53 #include <GL/gl.h>
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54 #endif /* MACOSX */
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55 #endif /* HAVE_OPENGL */
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56
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57 /* The SDL video driver */
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58 typedef struct SDL_VideoDevice SDL_VideoDevice;
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59
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60 /* Define the SDL video driver structure */
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61 #define _THIS SDL_VideoDevice *_this
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62 #ifndef _STATUS
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63 #define _STATUS SDL_status *status
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64 #endif
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65 struct SDL_VideoDevice {
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66 /* * * */
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67 /* The name of this video driver */
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68 const char *name;
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69
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70 /* * * */
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71 /* Initialization/Query functions */
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72
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73 /* Initialize the native video subsystem, filling 'vformat' with the
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74 "best" display pixel format, returning 0 or -1 if there's an error.
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75 */
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76 int (*VideoInit)(_THIS, SDL_PixelFormat *vformat);
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77
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78 /* List the available video modes for the given pixel format, sorted
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79 from largest to smallest.
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80 */
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81 SDL_Rect **(*ListModes)(_THIS, SDL_PixelFormat *format, Uint32 flags);
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82
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83 /* Set the requested video mode, returning a surface which will be
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84 set to the SDL_VideoSurface. The width and height will already
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85 be verified by ListModes(), and the video subsystem is free to
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86 set the mode to a supported bit depth different from the one
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87 specified -- the desired bpp will be emulated with a shadow
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88 surface if necessary. If a new mode is returned, this function
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89 should take care of cleaning up the current mode.
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90 */
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91 SDL_Surface *(*SetVideoMode)(_THIS, SDL_Surface *current,
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92 int width, int height, int bpp, Uint32 flags);
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93
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94 /* Toggle the fullscreen mode */
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95 int (*ToggleFullScreen)(_THIS, int on);
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96
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97 /* This is called after the video mode has been set, to get the
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98 initial mouse state. It should queue events as necessary to
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99 properly represent the current mouse focus and position.
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100 */
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101 void (*UpdateMouse)(_THIS);
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102
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103 /* Create a YUV video surface (possibly overlay) of the given
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104 format. The hardware should be able to perform at least 2x
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105 scaling on display.
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106 */
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107 SDL_Overlay *(*CreateYUVOverlay)(_THIS, int width, int height,
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108 Uint32 format, SDL_Surface *display);
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109
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110 /* Sets the color entries { firstcolor .. (firstcolor+ncolors-1) }
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111 of the physical palette to those in 'colors'. If the device is
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112 using a software palette (SDL_HWPALETTE not set), then the
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113 changes are reflected in the logical palette of the screen
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114 as well.
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115 The return value is 1 if all entries could be set properly
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116 or 0 otherwise.
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117 */
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118 int (*SetColors)(_THIS, int firstcolor, int ncolors,
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119 SDL_Color *colors);
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120
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121 /* This pointer should exist in the native video subsystem and should
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122 point to an appropriate update function for the current video mode
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123 */
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124 void (*UpdateRects)(_THIS, int numrects, SDL_Rect *rects);
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125
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126 /* Reverse the effects VideoInit() -- called if VideoInit() fails
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127 or if the application is shutting down the video subsystem.
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128 */
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129 void (*VideoQuit)(_THIS);
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130
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131 /* * * */
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132 /* Hardware acceleration functions */
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133
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134 /* Information about the video hardware */
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135 SDL_VideoInfo info;
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136
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137 /* Allocates a surface in video memory */
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138 int (*AllocHWSurface)(_THIS, SDL_Surface *surface);
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139
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140 /* Sets the hardware accelerated blit function, if any, based
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141 on the current flags of the surface (colorkey, alpha, etc.)
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142 */
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143 int (*CheckHWBlit)(_THIS, SDL_Surface *src, SDL_Surface *dst);
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144
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145 /* Fills a surface rectangle with the given color */
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146 int (*FillHWRect)(_THIS, SDL_Surface *dst, SDL_Rect *rect, Uint32 color);
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147
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148 /* Sets video mem colorkey and accelerated blit function */
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149 int (*SetHWColorKey)(_THIS, SDL_Surface *surface, Uint32 key);
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150
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151 /* Sets per surface hardware alpha value */
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152 int (*SetHWAlpha)(_THIS, SDL_Surface *surface, Uint8 value);
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153
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154 /* Returns a readable/writable surface */
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155 int (*LockHWSurface)(_THIS, SDL_Surface *surface);
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156 void (*UnlockHWSurface)(_THIS, SDL_Surface *surface);
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157
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158 /* Performs hardware flipping */
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159 int (*FlipHWSurface)(_THIS, SDL_Surface *surface);
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160
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161 /* Frees a previously allocated video surface */
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162 void (*FreeHWSurface)(_THIS, SDL_Surface *surface);
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163
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164 /* * * */
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165 /* Gamma support */
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166
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167 Uint16 *gamma;
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168
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169 /* Set the gamma correction directly (emulated with gamma ramps) */
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170 int (*SetGamma)(_THIS, float red, float green, float blue);
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171
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172 /* Get the gamma correction directly (emulated with gamma ramps) */
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173 int (*GetGamma)(_THIS, float *red, float *green, float *blue);
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174
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175 /* Set the gamma ramp */
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176 int (*SetGammaRamp)(_THIS, Uint16 *ramp);
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177
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178 /* Get the gamma ramp */
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179 int (*GetGammaRamp)(_THIS, Uint16 *ramp);
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180
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181 /* * * */
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182 /* OpenGL support */
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183
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184 /* Sets the dll to use for OpenGL and loads it */
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185 int (*GL_LoadLibrary)(_THIS, const char *path);
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186
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187 /* Retrieves the address of a function in the gl library */
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188 void* (*GL_GetProcAddress)(_THIS, const char *proc);
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189
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190 /* Get attribute information from the windowing system. */
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191 int (*GL_GetAttribute)(_THIS, SDL_GLattr attrib, int* value);
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192
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193 /* Make the context associated with this driver current */
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194 int (*GL_MakeCurrent)(_THIS);
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195
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196 /* Swap the current buffers in double buffer mode. */
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197 void (*GL_SwapBuffers)(_THIS);
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198
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199 /* OpenGL functions for SDL_OPENGLBLIT */
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200 #ifdef HAVE_OPENGL
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201 #ifndef WIN32
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202 #define WINAPI
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203 #endif
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204 #define SDL_PROC(ret,func,params) ret (WINAPI *func) params;
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205 #include "SDL_glfuncs.h"
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206 #undef SDL_PROC
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207
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208 /* Texture id */
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209 GLuint texture;
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210 #endif
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211 int is_32bit;
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212
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213 /* * * */
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214 /* Window manager functions */
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215
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216 /* Set the title and icon text */
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217 void (*SetCaption)(_THIS, const char *title, const char *icon);
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218
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219 /* Set the window icon image */
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220 void (*SetIcon)(_THIS, SDL_Surface *icon, Uint8 *mask);
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221
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222 /* Iconify the window.
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223 This function returns 1 if there is a window manager and the
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224 window was actually iconified, it returns 0 otherwise.
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225 */
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226 int (*IconifyWindow)(_THIS);
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227
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228 /* Grab or ungrab keyboard and mouse input */
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229 SDL_GrabMode (*GrabInput)(_THIS, SDL_GrabMode mode);
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230
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231 /* Get some platform dependent window information */
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232 int (*GetWMInfo)(_THIS, SDL_SysWMinfo *info);
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233
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234 /* * * */
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235 /* Cursor manager functions */
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236
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237 /* Free a window manager cursor
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238 This function can be NULL if CreateWMCursor is also NULL.
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239 */
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240 void (*FreeWMCursor)(_THIS, WMcursor *cursor);
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241
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242 /* If not NULL, create a black/white window manager cursor */
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243 WMcursor *(*CreateWMCursor)(_THIS,
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244 Uint8 *data, Uint8 *mask, int w, int h, int hot_x, int hot_y);
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245
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246 /* Show the specified cursor, or hide if cursor is NULL */
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247 int (*ShowWMCursor)(_THIS, WMcursor *cursor);
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248
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249 /* Warp the window manager cursor to (x,y)
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250 If NULL, a mouse motion event is posted internally.
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251 */
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252 void (*WarpWMCursor)(_THIS, Uint16 x, Uint16 y);
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253
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254 /* If not NULL, this is called when a mouse motion event occurs */
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255 void (*MoveWMCursor)(_THIS, int x, int y);
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256
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257 /* Determine whether the mouse should be in relative mode or not.
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258 This function is called when the input grab state or cursor
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259 visibility state changes.
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260 If the cursor is not visible, and the input is grabbed, the
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261 driver can place the mouse in relative mode, which may result
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262 in higher accuracy sampling of the pointer motion.
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263 */
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264 void (*CheckMouseMode)(_THIS);
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265
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266 /* * * */
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267 /* Event manager functions */
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268
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269 /* Initialize keyboard mapping for this driver */
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270 void (*InitOSKeymap)(_THIS);
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271
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272 /* Handle any queued OS events */
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273 void (*PumpEvents)(_THIS);
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274
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275 /* * * */
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276 /* Data common to all drivers */
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277 SDL_Surface *screen;
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278 SDL_Surface *shadow;
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279 SDL_Surface *visible;
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280 SDL_Palette *physpal; /* physical palette, if != logical palette */
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281 SDL_Color *gammacols; /* gamma-corrected colours, or NULL */
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282 char *wm_title;
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283 char *wm_icon;
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284 int offset_x;
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285 int offset_y;
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286 SDL_GrabMode input_grab;
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287
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288 /* Driver information flags */
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289 int handles_any_size; /* Driver handles any size video mode */
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290
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291 /* * * */
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292 /* Data used by the GL drivers */
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293 struct {
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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;
450
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299 int buffer_size;
0
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300 int stencil_size;
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301 int double_buffer;
450
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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;
0
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307 int driver_loaded;
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308 char driver_path[256];
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309 void* dll_handle;
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310 } gl_config;
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311
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312 /* * * */
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313 /* Data private to this driver */
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314 struct SDL_PrivateVideoData *hidden;
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315 struct SDL_PrivateGLData *gl_data;
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316
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317 /* * * */
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318 /* The function used to dispose of this structure */
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319 void (*free)(_THIS);
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320 };
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321 #undef _THIS
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322
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323 typedef struct VideoBootStrap {
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324 const char *name;
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325 const char *desc;
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326 int (*available)(void);
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327 SDL_VideoDevice *(*create)(int devindex);
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328 } VideoBootStrap;
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329
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330 #ifdef ENABLE_X11
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331 extern VideoBootStrap X11_bootstrap;
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332 #endif
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333 #ifdef ENABLE_DGA
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334 extern VideoBootStrap DGA_bootstrap;
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335 #endif
30
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336 #ifdef ENABLE_NANOX
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337 extern VideoBootStrap NX_bootstrap;
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338 #endif
0
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339 #ifdef ENABLE_FBCON
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340 extern VideoBootStrap FBCON_bootstrap;
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341 #endif
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342 #ifdef ENABLE_DIRECTFB
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343 extern VideoBootStrap DirectFB_bootstrap;
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344 #endif
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345 #ifdef ENABLE_PS2GS
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346 extern VideoBootStrap PS2GS_bootstrap;
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347 #endif
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348 #ifdef ENABLE_GGI
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349 extern VideoBootStrap GGI_bootstrap;
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350 #endif
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351 #ifdef ENABLE_VGL
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352 extern VideoBootStrap VGL_bootstrap;
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353 #endif
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354 #ifdef ENABLE_SVGALIB
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355 extern VideoBootStrap SVGALIB_bootstrap;
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356 #endif
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357 #ifdef ENABLE_AALIB
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358 extern VideoBootStrap AALIB_bootstrap;
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359 #endif
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360 #ifdef ENABLE_WINDIB
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361 extern VideoBootStrap WINDIB_bootstrap;
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362 #endif
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363 #ifdef ENABLE_DIRECTX
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364 extern VideoBootStrap DIRECTX_bootstrap;
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365 #endif
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366 #ifdef ENABLE_BWINDOW
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367 extern VideoBootStrap BWINDOW_bootstrap;
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368 #endif
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369 /* MacOS X gets the proper defines from configure */
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370 #if defined(macintosh) && !defined(MACOSX)
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371 #define ENABLE_TOOLBOX
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372 #if !TARGET_API_MAC_CARBON
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373 #define ENABLE_DRAWSPROCKET
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374 #endif
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375 #endif
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376 #ifdef ENABLE_TOOLBOX
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377 extern VideoBootStrap TOOLBOX_bootstrap;
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378 #endif
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379 #ifdef ENABLE_DRAWSPROCKET
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380 extern VideoBootStrap DSp_bootstrap;
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381 #endif
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382 #ifdef ENABLE_QUARTZ
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383 extern VideoBootStrap QZ_bootstrap;
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384 #endif
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385 #ifdef ENABLE_CYBERGRAPHICS
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386 extern VideoBootStrap CGX_bootstrap;
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387 #endif
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388 #ifdef ENABLE_PHOTON
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389 extern VideoBootStrap ph_bootstrap;
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390 #endif
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391 #ifdef ENABLE_EPOC
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392 extern VideoBootStrap EPOC_bootstrap;
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393 #endif
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394 #ifdef ENABLE_DUMMYVIDEO
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395 extern VideoBootStrap DUMMY_bootstrap;
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396 #endif
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397 #ifdef ENABLE_XBIOS
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398 extern VideoBootStrap XBIOS_bootstrap;
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399 #endif
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400 #ifdef ENABLE_GEM
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401 extern VideoBootStrap GEM_bootstrap;
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402 #endif
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403 #ifdef ENABLE_QTOPIA
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404 extern VideoBootStrap Qtopia_bootstrap;
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405 #endif
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406 #ifdef ENABLE_PICOGUI
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407 extern VideoBootStrap PG_bootstrap;
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408 #endif
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409 #ifdef ENABLE_DC
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410 extern VideoBootStrap DC_bootstrap;
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411 #endif
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412 #ifdef ENABLE_RISCOS
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413 extern VideoBootStrap RISCOS_bootstrap;
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414 #endif
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415 /* This is the current video device */
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416 extern SDL_VideoDevice *current_video;
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417
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418 #define SDL_VideoSurface (current_video->screen)
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419 #define SDL_ShadowSurface (current_video->shadow)
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420 #define SDL_PublicSurface (current_video->visible)
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421
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422 #endif /* _SDL_sysvideo_h */