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0
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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 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@devolution.com
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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 /* The high-level video driver subsystem */
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29
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30 #include <stdio.h>
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31 #include <stdlib.h>
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32 #include <string.h>
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33
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34 #include "SDL.h"
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35 #include "SDL_error.h"
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36 #include "SDL_video.h"
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37 #include "SDL_events.h"
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38 #include "SDL_mutex.h"
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39 #include "SDL_sysvideo.h"
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40 #include "SDL_sysevents.h"
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41 #include "SDL_blit.h"
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42 #include "SDL_pixels_c.h"
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43 #include "SDL_events_c.h"
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44 #include "SDL_cursor_c.h"
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45
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46 /* Available video drivers */
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47 static VideoBootStrap *bootstrap[] = {
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48 #ifdef ENABLE_X11
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49 &X11_bootstrap,
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50 #endif
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51 #ifdef ENABLE_DGA
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52 &DGA_bootstrap,
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53 #endif
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54 #ifdef ENABLE_FBCON
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55 &FBCON_bootstrap,
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56 #endif
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57 #ifdef ENABLE_PS2GS
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58 &PS2GS_bootstrap,
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59 #endif
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60 #ifdef ENABLE_GGI
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61 &GGI_bootstrap,
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62 #endif
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63 #ifdef ENABLE_SVGALIB
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64 &SVGALIB_bootstrap,
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65 #endif
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66 #ifdef ENABLE_AALIB
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67 &AALIB_bootstrap,
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68 #endif
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69 #ifdef ENABLE_DIRECTX
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70 &DIRECTX_bootstrap,
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71 #endif
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72 #ifdef ENABLE_WINDIB
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73 &WINDIB_bootstrap,
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74 #endif
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75 #ifdef ENABLE_BWINDOW
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76 &BWINDOW_bootstrap,
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77 #endif
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78 #ifdef ENABLE_TOOLBOX
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79 &TOOLBOX_bootstrap,
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80 #endif
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81 #ifdef ENABLE_DRAWSPROCKET
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82 &DSp_bootstrap,
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83 #endif
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84 #ifdef ENABLE_CYBERGRAPHICS
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85 &CGX_bootstrap,
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86 #endif
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87 NULL
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88 };
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89 SDL_VideoDevice *current_video = NULL;
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90
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91 /* Places to store title and icon text for the app */
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92 static char *wm_title = NULL;
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93 static char *wm_icon = NULL;
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94
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95 /* Various local functions */
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96 int SDL_VideoInit(const char *driver_name, Uint32 flags);
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97 void SDL_VideoQuit(void);
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98 void SDL_GL_UpdateRectsLock(SDL_VideoDevice* this, int numrects, SDL_Rect* rects);
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99
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100 static SDL_GrabMode SDL_WM_GrabInputOff(void);
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101 #ifdef HAVE_OPENGL
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102 static int lock_count = 0;
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103 #endif
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104
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105
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106 /*
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107 * Initialize the video and event subsystems -- determine native pixel format
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108 */
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109 int SDL_VideoInit (const char *driver_name, Uint32 flags)
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110 {
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111 SDL_VideoDevice *video;
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112 int index;
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113 int i;
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114 SDL_PixelFormat vformat;
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115 Uint32 video_flags;
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116
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117 /* Toggle the event thread flags, based on OS requirements */
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118 #if defined(MUST_THREAD_EVENTS)
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119 flags |= SDL_INIT_EVENTTHREAD;
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120 #elif defined(CANT_THREAD_EVENTS)
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121 if ( (flags & SDL_INIT_EVENTTHREAD) == SDL_INIT_EVENTTHREAD ) {
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122 SDL_SetError("OS doesn't support threaded events");
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123 return(-1);
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124 }
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125 #endif
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126
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127 /* Check to make sure we don't overwrite 'current_video' */
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128 if ( current_video != NULL ) {
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129 SDL_VideoQuit();
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130 }
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131
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132 /* Select the proper video driver */
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133 index = 0;
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134 video = NULL;
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135 if ( driver_name != NULL ) {
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136 #if 0 /* This will be replaced with a better driver selection API */
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137 if ( strrchr(driver_name, ':') != NULL ) {
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138 index = atoi(strrchr(driver_name, ':')+1);
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139 }
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140 #endif
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141 for ( i=0; bootstrap[i]; ++i ) {
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142 if ( strncmp(bootstrap[i]->name, driver_name,
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143 strlen(bootstrap[i]->name)) == 0 ) {
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144 if ( bootstrap[i]->available() ) {
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145 video = bootstrap[i]->create(index);
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146 break;
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147 }
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148 }
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149 }
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150 } else {
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151 for ( i=0; bootstrap[i]; ++i ) {
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152 if ( bootstrap[i]->available() ) {
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153 video = bootstrap[i]->create(index);
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154 if ( video != NULL ) {
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155 break;
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156 }
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157 }
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158 }
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159 }
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160 if ( video == NULL ) {
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161 SDL_SetError("No available video device");
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162 return(-1);
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163 }
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164 current_video = video;
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165 current_video->name = bootstrap[i]->name;
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166
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167 /* Do some basic variable initialization */
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168 video->screen = NULL;
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169 video->shadow = NULL;
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170 video->visible = NULL;
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171 video->physpal = NULL;
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172 video->gammacols = NULL;
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173 video->gamma = NULL;
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174 video->wm_title = NULL;
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175 video->wm_icon = NULL;
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176 video->offset_x = 0;
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177 video->offset_y = 0;
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178 memset(&video->info, 0, (sizeof video->info));
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179
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180 /* Set some very sane GL defaults */
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181 video->gl_config.driver_loaded = 0;
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182 video->gl_config.dll_handle = NULL;
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183 video->gl_config.red_size = 5;
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184 #if 1 /* This seems to work on more video cards, as a default */
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185 video->gl_config.green_size = 5;
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186 #else
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187 video->gl_config.green_size = 6;
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188 #endif
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189 video->gl_config.blue_size = 5;
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190 video->gl_config.alpha_size = 0;
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191 video->gl_config.buffer_size = 0;
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192 video->gl_config.depth_size = 16;
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193 video->gl_config.stencil_size = 0;
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194 video->gl_config.double_buffer = 1;
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195 video->gl_config.accum_red_size = 0;
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196 video->gl_config.accum_green_size = 0;
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197 video->gl_config.accum_blue_size = 0;
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198 video->gl_config.accum_alpha_size = 0;
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199
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200 /* Initialize the video subsystem */
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201 memset(&vformat, 0, sizeof(vformat));
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202 if ( video->VideoInit(video, &vformat) < 0 ) {
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203 SDL_VideoQuit();
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204 return(-1);
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205 }
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206
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207 /* Create a zero sized video surface of the appropriate format */
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208 video_flags = SDL_SWSURFACE;
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209 SDL_VideoSurface = SDL_CreateRGBSurface(video_flags, 0, 0,
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210 vformat.BitsPerPixel,
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211 vformat.Rmask, vformat.Gmask, vformat.Bmask, 0);
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212 if ( SDL_VideoSurface == NULL ) {
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213 SDL_VideoQuit();
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214 return(-1);
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215 }
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216 SDL_PublicSurface = NULL; /* Until SDL_SetVideoMode() */
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217
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218 #if 0 /* Don't change the current palette - may be used by other programs.
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219 * The application can't do anything with the display surface until
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220 * a video mode has been set anyway. :)
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221 */
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222 /* If we have a palettized surface, create a default palette */
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223 if ( SDL_VideoSurface->format->palette ) {
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224 SDL_PixelFormat *vf = SDL_VideoSurface->format;
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225 SDL_DitherColors(vf->palette->colors, vf->BitsPerPixel);
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226 video->SetColors(video,
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227 0, vf->palette->ncolors, vf->palette->colors);
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228 }
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229 #endif
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230 video->info.vfmt = SDL_VideoSurface->format;
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231
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232 /* Start the event loop */
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233 if ( SDL_StartEventLoop(flags) < 0 ) {
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234 SDL_VideoQuit();
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235 return(-1);
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236 }
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237 SDL_CursorInit(flags & SDL_INIT_EVENTTHREAD);
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238
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239 /* We're ready to go! */
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240 return(0);
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241 }
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242
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243 char *SDL_VideoDriverName(char *namebuf, int maxlen)
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244 {
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245 if ( current_video != NULL ) {
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246 strncpy(namebuf, current_video->name, maxlen-1);
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247 namebuf[maxlen-1] = '\0';
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248 return(namebuf);
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249 }
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250 return(NULL);
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251 }
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252
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253 /*
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254 * Get the current display surface
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255 */
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256 SDL_Surface *SDL_GetVideoSurface(void)
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257 {
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258 SDL_Surface *visible;
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259
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260 visible = NULL;
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261 if ( current_video ) {
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262 visible = current_video->visible;
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263 }
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264 return(visible);
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265 }
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266
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267 /*
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268 * Get the current information about the video hardware
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269 */
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270 const SDL_VideoInfo *SDL_GetVideoInfo(void)
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271 {
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272 const SDL_VideoInfo *info;
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273
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274 info = NULL;
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275 if ( current_video ) {
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276 info = ¤t_video->info;
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277 }
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278 return(info);
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279 }
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280
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281 /*
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282 * Return a pointer to an array of available screen dimensions for the
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283 * given format, sorted largest to smallest. Returns NULL if there are
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284 * no dimensions available for a particular format, or (SDL_Rect **)-1
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285 * if any dimension is okay for the given format. If 'format' is NULL,
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286 * the mode list will be for the format given by SDL_GetVideoInfo()->vfmt
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287 */
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288 SDL_Rect ** SDL_ListModes (SDL_PixelFormat *format, Uint32 flags)
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289 {
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290 SDL_VideoDevice *video = current_video;
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291 SDL_VideoDevice *this = current_video;
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292 SDL_Rect **modes;
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293
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294 modes = NULL;
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295 if ( SDL_VideoSurface ) {
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296 if ( format == NULL ) {
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297 format = SDL_VideoSurface->format;
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298 }
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299 modes = video->ListModes(this, format, flags);
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300 }
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301 return(modes);
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302 }
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303
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304 /*
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305 * Check to see if a particular video mode is supported.
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306 * It returns 0 if the requested mode is not supported under any bit depth,
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307 * or returns the bits-per-pixel of the closest available mode with the
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308 * given width and height. If this bits-per-pixel is different from the
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309 * one used when setting the video mode, SDL_SetVideoMode() will succeed,
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310 * but will emulate the requested bits-per-pixel with a shadow surface.
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311 */
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312 static Uint8 SDL_closest_depths[4][8] = {
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313 /* 8 bit closest depth ordering */
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314 { 0, 8, 16, 15, 32, 24, 0, 0 },
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315 /* 15,16 bit closest depth ordering */
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316 { 0, 16, 15, 32, 24, 8, 0, 0 },
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317 /* 24 bit closest depth ordering */
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318 { 0, 24, 32, 16, 15, 8, 0, 0 },
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319 /* 32 bit closest depth ordering */
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320 { 0, 32, 16, 15, 24, 8, 0, 0 }
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321 };
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322
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323 int SDL_VideoModeOK (int width, int height, int bpp, Uint32 flags)
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324 {
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325 int table, b, i;
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326 int supported;
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327 SDL_PixelFormat format;
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328 SDL_Rect **sizes;
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329
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330 /* Currently 1 and 4 bpp are not supported */
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331 if ( bpp < 8 || bpp > 32 ) {
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332 return(0);
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333 }
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334 if ( (width == 0) || (height == 0) ) {
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335 return(0);
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336 }
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337
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338 /* Search through the list valid of modes */
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339 memset(&format, 0, sizeof(format));
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340 supported = 0;
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341 table = ((bpp+7)/8)-1;
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342 SDL_closest_depths[table][0] = bpp;
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343 SDL_closest_depths[table][7] = 0;
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344 for ( b = 0; !supported && SDL_closest_depths[table][b]; ++b ) {
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345 format.BitsPerPixel = SDL_closest_depths[table][b];
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346 sizes = SDL_ListModes(&format, flags);
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347 if ( sizes == (SDL_Rect **)0 ) {
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348 /* No sizes supported at this bit-depth */
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349 continue;
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350 } else
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351 #ifdef macintosh /* MPW optimization bug? */
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352 if ( (sizes == (SDL_Rect **)0xFFFFFFFF) ||
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353 #else
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354 if ( (sizes == (SDL_Rect **)-1) ||
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355 #endif
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356 current_video->handles_any_size ) {
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357 /* Any size supported at this bit-depth */
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358 supported = 1;
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359 continue;
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360 } else
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361 for ( i=0; sizes[i]; ++i ) {
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362 if ((sizes[i]->w == width) && (sizes[i]->h == height)) {
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363 supported = 1;
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364 break;
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365 }
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366 }
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367 }
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368 if ( supported ) {
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369 --b;
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370 return(SDL_closest_depths[table][b]);
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371 } else {
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372 return(0);
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373 }
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374 }
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375
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376 /*
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377 * Get the closest non-emulated video mode to the one requested
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378 */
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379 static int SDL_GetVideoMode (int *w, int *h, int *BitsPerPixel, Uint32 flags)
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380 {
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381 int table, b, i;
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382 int supported;
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383 int native_bpp;
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384 SDL_PixelFormat format;
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385 SDL_Rect **sizes;
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386
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387 /* Try the original video mode, get the closest depth */
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388 native_bpp = SDL_VideoModeOK(*w, *h, *BitsPerPixel, flags);
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389 if ( native_bpp == *BitsPerPixel ) {
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390 return(1);
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391 }
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392 if ( native_bpp > 0 ) {
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393 *BitsPerPixel = native_bpp;
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394 return(1);
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395 }
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396
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397 /* No exact size match at any depth, look for closest match */
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398 memset(&format, 0, sizeof(format));
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399 supported = 0;
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400 table = ((*BitsPerPixel+7)/8)-1;
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401 SDL_closest_depths[table][0] = *BitsPerPixel;
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402 SDL_closest_depths[table][7] = SDL_VideoSurface->format->BitsPerPixel;
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403 for ( b = 0; !supported && SDL_closest_depths[table][b]; ++b ) {
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404 format.BitsPerPixel = SDL_closest_depths[table][b];
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405 sizes = SDL_ListModes(&format, flags);
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406 if ( sizes == (SDL_Rect **)0 ) {
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407 /* No sizes supported at this bit-depth */
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408 continue;
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409 }
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410 for ( i=0; sizes[i]; ++i ) {
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411 if ((sizes[i]->w < *w) || (sizes[i]->h < *h)) {
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412 if ( i > 0 ) {
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413 --i;
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414 *w = sizes[i]->w;
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415 *h = sizes[i]->h;
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416 *BitsPerPixel = SDL_closest_depths[table][b];
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417 supported = 1;
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|
418 } else {
|
|
|
419 /* Largest mode too small... */;
|
|
|
420 }
|
|
|
421 break;
|
|
|
422 }
|
|
|
423 }
|
|
|
424 if ( (i > 0) && ! sizes[i] ) {
|
|
|
425 /* The smallest mode was larger than requested, OK */
|
|
|
426 --i;
|
|
|
427 *w = sizes[i]->w;
|
|
|
428 *h = sizes[i]->h;
|
|
|
429 *BitsPerPixel = SDL_closest_depths[table][b];
|
|
|
430 supported = 1;
|
|
|
431 }
|
|
|
432 }
|
|
|
433 if ( ! supported ) {
|
|
|
434 SDL_SetError("No video mode large enough for %dx%d", *w, *h);
|
|
|
435 }
|
|
|
436 return(supported);
|
|
|
437 }
|
|
|
438
|
|
|
439 /* This should probably go somewhere else -- like SDL_surface.c */
|
|
|
440 static void SDL_ClearSurface(SDL_Surface *surface)
|
|
|
441 {
|
|
|
442 Uint32 black;
|
|
|
443
|
|
|
444 black = SDL_MapRGB(surface->format, 0, 0, 0);
|
|
|
445 SDL_FillRect(surface, NULL, black);
|
|
|
446 if ((surface->flags&SDL_HWSURFACE) && (surface->flags&SDL_DOUBLEBUF)) {
|
|
|
447 SDL_Flip(surface);
|
|
|
448 SDL_FillRect(surface, NULL, black);
|
|
|
449 }
|
|
|
450 SDL_Flip(surface);
|
|
|
451 }
|
|
|
452
|
|
|
453 /*
|
|
|
454 * Create a shadow surface suitable for fooling the app. :-)
|
|
|
455 */
|
|
|
456 static void SDL_CreateShadowSurface(int depth)
|
|
|
457 {
|
|
|
458 Uint32 Rmask, Gmask, Bmask;
|
|
|
459
|
|
|
460 /* Allocate the shadow surface */
|
|
|
461 if ( depth == (SDL_VideoSurface->format)->BitsPerPixel ) {
|
|
|
462 Rmask = (SDL_VideoSurface->format)->Rmask;
|
|
|
463 Gmask = (SDL_VideoSurface->format)->Gmask;
|
|
|
464 Bmask = (SDL_VideoSurface->format)->Bmask;
|
|
|
465 } else {
|
|
|
466 Rmask = Gmask = Bmask = 0;
|
|
|
467 }
|
|
|
468 SDL_ShadowSurface = SDL_CreateRGBSurface(SDL_SWSURFACE,
|
|
|
469 SDL_VideoSurface->w, SDL_VideoSurface->h,
|
|
|
470 depth, Rmask, Gmask, Bmask, 0);
|
|
|
471 if ( SDL_ShadowSurface == NULL ) {
|
|
|
472 return;
|
|
|
473 }
|
|
|
474
|
|
|
475 /* 8-bit shadow surfaces report that they have exclusive palette */
|
|
|
476 if ( SDL_ShadowSurface->format->palette ) {
|
|
|
477 SDL_ShadowSurface->flags |= SDL_HWPALETTE;
|
|
|
478 if ( depth == (SDL_VideoSurface->format)->BitsPerPixel ) {
|
|
|
479 memcpy(SDL_ShadowSurface->format->palette->colors,
|
|
|
480 SDL_VideoSurface->format->palette->colors,
|
|
|
481 SDL_VideoSurface->format->palette->ncolors*
|
|
|
482 sizeof(SDL_Color));
|
|
|
483 } else {
|
|
|
484 SDL_DitherColors(
|
|
|
485 SDL_ShadowSurface->format->palette->colors, depth);
|
|
|
486 }
|
|
|
487 }
|
|
|
488
|
|
|
489 /* If the video surface is resizable, the shadow should say so */
|
|
|
490 if ( (SDL_VideoSurface->flags & SDL_RESIZABLE) == SDL_RESIZABLE ) {
|
|
|
491 SDL_ShadowSurface->flags |= SDL_RESIZABLE;
|
|
|
492 }
|
|
|
493 /* If the video surface has no frame, the shadow should say so */
|
|
|
494 if ( (SDL_VideoSurface->flags & SDL_NOFRAME) == SDL_NOFRAME ) {
|
|
|
495 SDL_ShadowSurface->flags |= SDL_NOFRAME;
|
|
|
496 }
|
|
|
497 /* If the video surface is fullscreen, the shadow should say so */
|
|
|
498 if ( (SDL_VideoSurface->flags & SDL_FULLSCREEN) == SDL_FULLSCREEN ) {
|
|
|
499 SDL_ShadowSurface->flags |= SDL_FULLSCREEN;
|
|
|
500 }
|
|
|
501 /* If the video surface is flippable, the shadow should say so */
|
|
|
502 if ( (SDL_VideoSurface->flags & SDL_DOUBLEBUF) == SDL_DOUBLEBUF ) {
|
|
|
503 SDL_ShadowSurface->flags |= SDL_DOUBLEBUF;
|
|
|
504 }
|
|
|
505 return;
|
|
|
506 }
|
|
|
507
|
|
|
508 /*
|
|
|
509 * Set the requested video mode, allocating a shadow buffer if necessary.
|
|
|
510 */
|
|
|
511 SDL_Surface * SDL_SetVideoMode (int width, int height, int bpp, Uint32 flags)
|
|
|
512 {
|
|
|
513 SDL_VideoDevice *video, *this;
|
|
|
514 SDL_Surface *prev_mode, *mode;
|
|
|
515 int video_w;
|
|
|
516 int video_h;
|
|
|
517 int video_bpp;
|
|
|
518 int is_opengl;
|
|
|
519 SDL_GrabMode saved_grab;
|
|
|
520
|
|
|
521 /* Start up the video driver, if necessary..
|
|
|
522 WARNING: This is the only function protected this way!
|
|
|
523 */
|
|
|
524 if ( ! current_video ) {
|
|
|
525 if ( SDL_Init(SDL_INIT_VIDEO|SDL_INIT_NOPARACHUTE) < 0 ) {
|
|
|
526 return(NULL);
|
|
|
527 }
|
|
|
528 }
|
|
|
529 this = video = current_video;
|
|
|
530
|
|
|
531 /* Default to the current video bpp */
|
|
|
532 if ( bpp == 0 ) {
|
|
|
533 flags |= SDL_ANYFORMAT;
|
|
|
534 bpp = SDL_VideoSurface->format->BitsPerPixel;
|
|
|
535 }
|
|
|
536
|
|
|
537 /* Get a good video mode, the closest one possible */
|
|
|
538 video_w = width;
|
|
|
539 video_h = height;
|
|
|
540 video_bpp = bpp;
|
|
|
541 if ( ! SDL_GetVideoMode(&video_w, &video_h, &video_bpp, flags) ) {
|
|
|
542 return(NULL);
|
|
|
543 }
|
|
|
544
|
|
|
545 /* Check the requested flags */
|
|
|
546 /* There's no palette in > 8 bits-per-pixel mode */
|
|
|
547 if ( video_bpp > 8 ) {
|
|
|
548 flags &= ~SDL_HWPALETTE;
|
|
|
549 }
|
|
|
550 #if 0
|
|
|
551 if ( (flags&SDL_FULLSCREEN) != SDL_FULLSCREEN ) {
|
|
|
552 /* There's no windowed double-buffering */
|
|
|
553 flags &= ~SDL_DOUBLEBUF;
|
|
|
554 }
|
|
|
555 #endif
|
|
|
556 if ( (flags&SDL_DOUBLEBUF) == SDL_DOUBLEBUF ) {
|
|
|
557 /* Use hardware surfaces when double-buffering */
|
|
|
558 flags |= SDL_HWSURFACE;
|
|
|
559 }
|
|
|
560
|
|
|
561 is_opengl = ( ( flags & SDL_OPENGL ) == SDL_OPENGL );
|
|
|
562 if ( is_opengl ) {
|
|
|
563 /* These flags are for 2D video modes only */
|
|
|
564 flags &= ~(SDL_HWSURFACE|SDL_DOUBLEBUF);
|
|
|
565 }
|
|
|
566
|
|
|
567 /* Clean up any previous video mode */
|
|
|
568 if ( SDL_PublicSurface != NULL ) {
|
|
|
569 SDL_PublicSurface = NULL;
|
|
|
570 }
|
|
|
571 if ( SDL_ShadowSurface != NULL ) {
|
|
|
572 SDL_Surface *ready_to_go;
|
|
|
573 ready_to_go = SDL_ShadowSurface;
|
|
|
574 SDL_ShadowSurface = NULL;
|
|
|
575 SDL_FreeSurface(ready_to_go);
|
|
|
576 }
|
|
|
577 if ( video->physpal ) {
|
|
|
578 free(video->physpal->colors);
|
|
|
579 free(video->physpal);
|
|
|
580 video->physpal = NULL;
|
|
|
581 }
|
|
|
582 if( video->gammacols) {
|
|
|
583 free(video->gammacols);
|
|
|
584 video->gammacols = NULL;
|
|
|
585 }
|
|
|
586
|
|
|
587 /* Save the previous grab state and turn off grab for mode switch */
|
|
|
588 saved_grab = SDL_WM_GrabInputOff();
|
|
|
589
|
|
|
590 /* Try to set the video mode, along with offset and clipping */
|
|
|
591 prev_mode = SDL_VideoSurface;
|
|
|
592 SDL_LockCursor();
|
|
|
593 SDL_VideoSurface = NULL; /* In case it's freed by driver */
|
|
|
594 mode = video->SetVideoMode(this, prev_mode,video_w,video_h,video_bpp,flags);
|
|
|
595 if ( mode ) { /* Prevent resize events from mode change */
|
|
|
596 SDL_PrivateResize(mode->w, mode->h);
|
|
|
597 }
|
|
|
598 /*
|
|
|
599 * rcg11292000
|
|
|
600 * If you try to set an SDL_OPENGL surface, and fail to find a
|
|
|
601 * matching visual, then the next call to SDL_SetVideoMode()
|
|
|
602 * will segfault, since we no longer point to a dummy surface,
|
|
|
603 * but rather NULL.
|
|
|
604 * Sam 11/29/00
|
|
|
605 * WARNING, we need to make sure that the previous mode hasn't
|
|
|
606 * already been freed by the video driver. What do we do in
|
|
|
607 * that case? Should we call SDL_VideoInit() again?
|
|
|
608 */
|
|
|
609 SDL_VideoSurface = (mode != NULL) ? mode : prev_mode;
|
|
|
610
|
|
|
611 if ( (mode != NULL) && (!is_opengl) ) {
|
|
|
612 /* Sanity check */
|
|
|
613 if ( (mode->w < width) || (mode->h < height) ) {
|
|
|
614 SDL_SetError("Video mode smaller than requested");
|
|
|
615 return(NULL);
|
|
|
616 }
|
|
|
617
|
|
|
618 /* If we have a palettized surface, create a default palette */
|
|
|
619 if ( mode->format->palette ) {
|
|
|
620 SDL_PixelFormat *vf = mode->format;
|
|
|
621 SDL_DitherColors(vf->palette->colors, vf->BitsPerPixel);
|
|
|
622 video->SetColors(this, 0, vf->palette->ncolors,
|
|
|
623 vf->palette->colors);
|
|
|
624 }
|
|
|
625
|
|
|
626 /* Clear the surface to black */
|
|
|
627 video->offset_x = 0;
|
|
|
628 video->offset_y = 0;
|
|
|
629 mode->offset = 0;
|
|
|
630 SDL_SetClipRect(mode, NULL);
|
|
|
631 SDL_ClearSurface(mode);
|
|
|
632
|
|
|
633 /* Now adjust the offsets to match the desired mode */
|
|
|
634 video->offset_x = (mode->w-width)/2;
|
|
|
635 video->offset_y = (mode->h-height)/2;
|
|
|
636 mode->offset = video->offset_y*mode->pitch +
|
|
|
637 video->offset_x*mode->format->BytesPerPixel;
|
|
|
638 #ifdef DEBUG_VIDEO
|
|
|
639 fprintf(stderr,
|
|
|
640 "Requested mode: %dx%dx%d, obtained mode %dx%dx%d (offset %d)\n",
|
|
|
641 width, height, bpp,
|
|
|
642 mode->w, mode->h, mode->format->BitsPerPixel, mode->offset);
|
|
|
643 #endif
|
|
|
644 mode->w = width;
|
|
|
645 mode->h = height;
|
|
|
646 SDL_SetClipRect(mode, NULL);
|
|
|
647 }
|
|
|
648 SDL_ResetCursor();
|
|
|
649 SDL_UnlockCursor();
|
|
|
650
|
|
|
651 /* If we failed setting a video mode, return NULL... (Uh Oh!) */
|
|
|
652 if ( mode == NULL ) {
|
|
|
653 return(NULL);
|
|
|
654 }
|
|
|
655
|
|
|
656 /* If there is no window manager, set the SDL_NOFRAME flag */
|
|
|
657 if ( ! video->info.wm_available ) {
|
|
|
658 mode->flags |= SDL_NOFRAME;
|
|
|
659 }
|
|
|
660
|
|
|
661 /* Reset the mouse cursor and grab for new video mode */
|
|
|
662 SDL_SetCursor(NULL);
|
|
|
663 if ( video->UpdateMouse ) {
|
|
|
664 video->UpdateMouse(this);
|
|
|
665 }
|
|
|
666 SDL_WM_GrabInput(saved_grab);
|
|
|
667 SDL_GetRelativeMouseState(NULL, NULL); /* Clear first large delta */
|
|
|
668
|
|
|
669 /* If we're running OpenGL, make the context current */
|
|
|
670 if ( (video->screen->flags & SDL_OPENGL) &&
|
|
|
671 video->GL_MakeCurrent ) {
|
|
|
672 if ( video->GL_MakeCurrent(this) < 0 ) {
|
|
|
673 return(NULL);
|
|
|
674 }
|
|
|
675 }
|
|
|
676
|
|
|
677 /* Set up a fake SDL surface for OpenGL "blitting" */
|
|
|
678 if ( (flags & SDL_OPENGLBLIT) == SDL_OPENGLBLIT ) {
|
|
|
679 /* Load GL functions for performing the texture updates */
|
|
|
680 #ifdef HAVE_OPENGL
|
|
|
681 #define SDL_PROC(ret,func,params) \
|
|
|
682 do { \
|
|
|
683 video->func = SDL_GL_GetProcAddress(#func); \
|
|
|
684 if ( ! video->func ) { \
|
|
|
685 SDL_SetError("Couldn't load GL function: %s\n", #func); \
|
|
|
686 return(NULL); \
|
|
|
687 } \
|
|
|
688 } while ( 0 );
|
|
|
689 #include "SDL_glfuncs.h"
|
|
|
690 #undef SDL_PROC
|
|
|
691
|
|
|
692 /* Create a software surface for blitting */
|
|
|
693 #ifdef GL_VERSION_1_2
|
|
|
694 /* If the implementation either supports the packed pixels
|
|
|
695 extension, or implements the core OpenGL 1.2 API, it will
|
|
|
696 support the GL_UNSIGNED_SHORT_5_6_5 texture format.
|
|
|
697 */
|
|
|
698 if ( (bpp == 16) &&
|
|
|
699 (strstr((const char *)video->glGetString(GL_EXTENSIONS),
|
|
|
700 "GL_EXT_packed_pixels") ||
|
|
|
701 (strncmp((const char *)video->glGetString(GL_VERSION),
|
|
|
702 "1.2", 3) == 0)) )
|
|
|
703 {
|
|
|
704 video->is_32bit = 0;
|
|
|
705 SDL_VideoSurface = SDL_CreateRGBSurface(
|
|
|
706 flags,
|
|
|
707 width,
|
|
|
708 height,
|
|
|
709 16,
|
|
|
710 31 << 11,
|
|
|
711 63 << 5,
|
|
|
712 31,
|
|
|
713 0
|
|
|
714 );
|
|
|
715 }
|
|
|
716 else
|
|
|
717 #endif /* OpenGL 1.2 */
|
|
|
718 {
|
|
|
719 video->is_32bit = 1;
|
|
|
720 SDL_VideoSurface = SDL_CreateRGBSurface(
|
|
|
721 flags,
|
|
|
722 width,
|
|
|
723 height,
|
|
|
724 32,
|
|
|
725 #if SDL_BYTEORDER == SDL_LIL_ENDIAN
|
|
|
726 0x000000FF,
|
|
|
727 0x0000FF00,
|
|
|
728 0x00FF0000,
|
|
|
729 0xFF000000
|
|
|
730 #else
|
|
|
731 0xFF000000,
|
|
|
732 0x00FF0000,
|
|
|
733 0x0000FF00,
|
|
|
734 0x000000FF
|
|
|
735 #endif
|
|
|
736 );
|
|
|
737 }
|
|
|
738 if ( ! SDL_VideoSurface ) {
|
|
|
739 return(NULL);
|
|
|
740 }
|
|
|
741 SDL_VideoSurface->flags = mode->flags | SDL_OPENGLBLIT;
|
|
|
742
|
|
|
743 /* Free the original video mode surface (is this safe?) */
|
|
|
744 SDL_FreeSurface(mode);
|
|
|
745
|
|
|
746 /* Set the surface completely opaque & white by default */
|
|
|
747 memset( SDL_VideoSurface->pixels, 255, SDL_VideoSurface->h * SDL_VideoSurface->pitch );
|
|
|
748 video->glGenTextures( 1, &video->texture );
|
|
|
749 video->glBindTexture( GL_TEXTURE_2D, video->texture );
|
|
|
750 video->glTexImage2D(
|
|
|
751 GL_TEXTURE_2D,
|
|
|
752 0,
|
|
|
753 video->is_32bit ? GL_RGBA : GL_RGB,
|
|
|
754 256,
|
|
|
755 256,
|
|
|
756 0,
|
|
|
757 video->is_32bit ? GL_RGBA : GL_RGB,
|
|
|
758 #ifdef GL_VERSION_1_2
|
|
|
759 video->is_32bit ? GL_UNSIGNED_BYTE : GL_UNSIGNED_SHORT_5_6_5,
|
|
|
760 #else
|
|
|
761 GL_UNSIGNED_BYTE,
|
|
|
762 #endif
|
|
|
763 NULL);
|
|
|
764
|
|
|
765 video->UpdateRects = SDL_GL_UpdateRectsLock;
|
|
|
766 #else
|
|
|
767 SDL_SetError("Somebody forgot to #define HAVE_OPENGL");
|
|
|
768 return(NULL);
|
|
|
769 #endif
|
|
|
770 }
|
|
|
771
|
|
|
772 /* Create a shadow surface if necessary */
|
|
|
773 /* There are three conditions under which we create a shadow surface:
|
|
|
774 1. We need a particular bits-per-pixel that we didn't get.
|
|
|
775 2. We need a hardware palette and didn't get one.
|
|
|
776 3. We need a software surface and got a hardware surface.
|
|
|
777 */
|
|
|
778 if ( !(SDL_VideoSurface->flags & SDL_OPENGL) &&
|
|
|
779 (
|
|
|
780 ( !(flags&SDL_ANYFORMAT) &&
|
|
|
781 (SDL_VideoSurface->format->BitsPerPixel != bpp)) ||
|
|
|
782 ( (flags&SDL_HWPALETTE) &&
|
|
|
783 !(SDL_VideoSurface->flags&SDL_HWPALETTE)) ||
|
|
|
784 /* If the surface is in hardware, video writes are visible
|
|
|
785 as soon as they are performed, so we need to buffer them
|
|
|
786 */
|
|
|
787 ( ((flags&SDL_HWSURFACE) == SDL_SWSURFACE) &&
|
|
|
788 (SDL_VideoSurface->flags&SDL_HWSURFACE))
|
|
|
789 ) ) {
|
|
|
790 SDL_CreateShadowSurface(bpp);
|
|
|
791 if ( SDL_ShadowSurface == NULL ) {
|
|
|
792 SDL_SetError("Couldn't create shadow surface");
|
|
|
793 return(NULL);
|
|
|
794 }
|
|
|
795 SDL_PublicSurface = SDL_ShadowSurface;
|
|
|
796 } else {
|
|
|
797 SDL_PublicSurface = SDL_VideoSurface;
|
|
|
798 }
|
|
|
799 video->info.vfmt = SDL_VideoSurface->format;
|
|
|
800
|
|
|
801 /* We're done! */
|
|
|
802 return(SDL_PublicSurface);
|
|
|
803 }
|
|
|
804
|
|
|
805 /*
|
|
|
806 * Convert a surface into the video pixel format.
|
|
|
807 */
|
|
|
808 SDL_Surface * SDL_DisplayFormat (SDL_Surface *surface)
|
|
|
809 {
|
|
|
810 Uint32 flags;
|
|
|
811
|
|
|
812 if ( ! SDL_PublicSurface ) {
|
|
|
813 SDL_SetError("No video mode has been set");
|
|
|
814 return(NULL);
|
|
|
815 }
|
|
|
816 /* Set the flags appropriate for copying to display surface */
|
|
|
817 flags = (SDL_PublicSurface->flags&SDL_HWSURFACE);
|
|
|
818 #ifdef AUTORLE_DISPLAYFORMAT
|
|
|
819 flags |= (surface->flags & (SDL_SRCCOLORKEY|SDL_SRCALPHA));
|
|
|
820 flags |= SDL_RLEACCELOK;
|
|
|
821 #else
|
|
|
822 flags |= surface->flags & (SDL_SRCCOLORKEY|SDL_SRCALPHA|SDL_RLEACCELOK);
|
|
|
823 #endif
|
|
|
824 return(SDL_ConvertSurface(surface, SDL_PublicSurface->format, flags));
|
|
|
825 }
|
|
|
826
|
|
|
827 /*
|
|
|
828 * Convert a surface into a format that's suitable for blitting to
|
|
|
829 * the screen, but including an alpha channel.
|
|
|
830 */
|
|
|
831 SDL_Surface *SDL_DisplayFormatAlpha(SDL_Surface *surface)
|
|
|
832 {
|
|
|
833 SDL_PixelFormat *vf;
|
|
|
834 SDL_PixelFormat *format;
|
|
|
835 SDL_Surface *converted;
|
|
|
836 Uint32 flags;
|
|
|
837 /* default to ARGB8888 */
|
|
|
838 Uint32 amask = 0xff000000;
|
|
|
839 Uint32 rmask = 0x00ff0000;
|
|
|
840 Uint32 gmask = 0x0000ff00;
|
|
|
841 Uint32 bmask = 0x000000ff;
|
|
|
842
|
|
|
843 if ( ! SDL_PublicSurface ) {
|
|
|
844 SDL_SetError("No video mode has been set");
|
|
|
845 return(NULL);
|
|
|
846 }
|
|
|
847 vf = SDL_PublicSurface->format;
|
|
|
848
|
|
|
849 switch(vf->BytesPerPixel) {
|
|
|
850 case 2:
|
|
|
851 /* For XGY5[56]5, use, AXGY8888, where {X, Y} = {R, B}.
|
|
|
852 For anything else (like ARGB4444) it doesn't matter
|
|
|
853 since we have no special code for it anyway */
|
|
|
854 if ( (vf->Rmask == 0x1f) &&
|
|
|
855 (vf->Bmask == 0xf800 || vf->Bmask == 0x7c00)) {
|
|
|
856 rmask = 0xff;
|
|
|
857 bmask = 0xff0000;
|
|
|
858 }
|
|
|
859 break;
|
|
|
860
|
|
|
861 case 3:
|
|
|
862 case 4:
|
|
|
863 /* Keep the video format, as long as the high 8 bits are
|
|
|
864 unused or alpha */
|
|
|
865 if ( (vf->Rmask == 0xff) && (vf->Bmask == 0xff0000) ) {
|
|
|
866 rmask = 0xff;
|
|
|
867 bmask = 0xff0000;
|
|
|
868 }
|
|
|
869 break;
|
|
|
870
|
|
|
871 default:
|
|
|
872 /* We have no other optimised formats right now. When/if a new
|
|
|
873 optimised alpha format is written, add the converter here */
|
|
|
874 break;
|
|
|
875 }
|
|
|
876 format = SDL_AllocFormat(32, rmask, gmask, bmask, amask);
|
|
|
877 flags = SDL_PublicSurface->flags & SDL_HWSURFACE;
|
|
|
878 flags |= surface->flags & (SDL_SRCALPHA | SDL_RLEACCELOK);
|
|
|
879 converted = SDL_ConvertSurface(surface, format, flags);
|
|
|
880 SDL_FreeFormat(format);
|
|
|
881 return(converted);
|
|
|
882 }
|
|
|
883
|
|
|
884 /*
|
|
|
885 * Update a specific portion of the physical screen
|
|
|
886 */
|
|
|
887 void SDL_UpdateRect(SDL_Surface *screen, Sint32 x, Sint32 y, Uint32 w, Uint32 h)
|
|
|
888 {
|
|
|
889 if ( screen ) {
|
|
|
890 SDL_Rect rect;
|
|
|
891
|
|
|
892 /* Perform some checking */
|
|
|
893 if ( w == 0 )
|
|
|
894 w = screen->w;
|
|
|
895 if ( h == 0 )
|
|
|
896 h = screen->h;
|
|
|
897 if ( (int)(x+w) > screen->w )
|
|
|
898 return;
|
|
|
899 if ( (int)(y+h) > screen->h )
|
|
|
900 return;
|
|
|
901
|
|
|
902 /* Fill the rectangle */
|
|
|
903 rect.x = x;
|
|
|
904 rect.y = y;
|
|
|
905 rect.w = w;
|
|
|
906 rect.h = h;
|
|
|
907 SDL_UpdateRects(screen, 1, &rect);
|
|
|
908 }
|
|
|
909 }
|
|
|
910 void SDL_UpdateRects (SDL_Surface *screen, int numrects, SDL_Rect *rects)
|
|
|
911 {
|
|
|
912 int i;
|
|
|
913 SDL_VideoDevice *video = current_video;
|
|
|
914 SDL_VideoDevice *this = current_video;
|
|
|
915
|
|
|
916 if ( screen == SDL_ShadowSurface ) {
|
|
|
917 /* Blit the shadow surface using saved mapping */
|
|
|
918 SDL_Palette *pal = screen->format->palette;
|
|
|
919 SDL_Color *saved_colors = NULL;
|
|
|
920 if ( pal && !(SDL_VideoSurface->flags & SDL_HWPALETTE) ) {
|
|
|
921 /* simulated 8bpp, use correct physical palette */
|
|
|
922 saved_colors = pal->colors;
|
|
|
923 if ( video->gammacols ) {
|
|
|
924 /* gamma-corrected palette */
|
|
|
925 pal->colors = video->gammacols;
|
|
|
926 } else if ( video->physpal ) {
|
|
|
927 /* physical palette different from logical */
|
|
|
928 pal->colors = video->physpal->colors;
|
|
|
929 }
|
|
|
930 }
|
|
|
931 if ( SHOULD_DRAWCURSOR(SDL_cursorstate) ) {
|
|
|
932 SDL_LockCursor();
|
|
|
933 SDL_DrawCursor(SDL_ShadowSurface);
|
|
|
934 for ( i=0; i<numrects; ++i ) {
|
|
|
935 SDL_LowerBlit(SDL_ShadowSurface, &rects[i],
|
|
|
936 SDL_VideoSurface, &rects[i]);
|
|
|
937 }
|
|
|
938 SDL_EraseCursor(SDL_ShadowSurface);
|
|
|
939 SDL_UnlockCursor();
|
|
|
940 } else {
|
|
|
941 for ( i=0; i<numrects; ++i ) {
|
|
|
942 SDL_LowerBlit(SDL_ShadowSurface, &rects[i],
|
|
|
943 SDL_VideoSurface, &rects[i]);
|
|
|
944 }
|
|
|
945 }
|
|
|
946 if ( saved_colors )
|
|
|
947 pal->colors = saved_colors;
|
|
|
948
|
|
|
949 /* Fall through to video surface update */
|
|
|
950 screen = SDL_VideoSurface;
|
|
|
951 }
|
|
|
952 if ( screen == SDL_VideoSurface ) {
|
|
|
953 /* Update the video surface */
|
|
|
954 if ( screen->offset ) {
|
|
|
955 for ( i=0; i<numrects; ++i ) {
|
|
|
956 rects[i].x += video->offset_x;
|
|
|
957 rects[i].y += video->offset_y;
|
|
|
958 }
|
|
|
959 video->UpdateRects(this, numrects, rects);
|
|
|
960 for ( i=0; i<numrects; ++i ) {
|
|
|
961 rects[i].x -= video->offset_x;
|
|
|
962 rects[i].y -= video->offset_y;
|
|
|
963 }
|
|
|
964 } else {
|
|
|
965 video->UpdateRects(this, numrects, rects);
|
|
|
966 }
|
|
|
967 }
|
|
|
968 }
|
|
|
969
|
|
|
970 /*
|
|
|
971 * Performs hardware double buffering, if possible, or a full update if not.
|
|
|
972 */
|
|
|
973 int SDL_Flip(SDL_Surface *screen)
|
|
|
974 {
|
|
|
975 SDL_VideoDevice *video = current_video;
|
|
|
976 /* Copy the shadow surface to the video surface */
|
|
|
977 if ( screen == SDL_ShadowSurface ) {
|
|
|
978 SDL_Rect rect;
|
|
|
979 SDL_Palette *pal = screen->format->palette;
|
|
|
980 SDL_Color *saved_colors = NULL;
|
|
|
981 if ( pal && !(SDL_VideoSurface->flags & SDL_HWPALETTE) ) {
|
|
|
982 /* simulated 8bpp, use correct physical palette */
|
|
|
983 saved_colors = pal->colors;
|
|
|
984 if ( video->gammacols ) {
|
|
|
985 /* gamma-corrected palette */
|
|
|
986 pal->colors = video->gammacols;
|
|
|
987 } else if ( video->physpal ) {
|
|
|
988 /* physical palette different from logical */
|
|
|
989 pal->colors = video->physpal->colors;
|
|
|
990 }
|
|
|
991 }
|
|
|
992
|
|
|
993 rect.x = 0;
|
|
|
994 rect.y = 0;
|
|
|
995 rect.w = screen->w;
|
|
|
996 rect.h = screen->h;
|
|
|
997 SDL_LowerBlit(SDL_ShadowSurface,&rect, SDL_VideoSurface,&rect);
|
|
|
998
|
|
|
999 if ( saved_colors )
|
|
|
1000 pal->colors = saved_colors;
|
|
|
1001 screen = SDL_VideoSurface;
|
|
|
1002 }
|
|
|
1003 if ( (screen->flags & SDL_DOUBLEBUF) == SDL_DOUBLEBUF ) {
|
|
|
1004 SDL_VideoDevice *this = current_video;
|
|
|
1005 return(video->FlipHWSurface(this, SDL_VideoSurface));
|
|
|
1006 } else {
|
|
|
1007 SDL_UpdateRect(screen, 0, 0, 0, 0);
|
|
|
1008 }
|
|
|
1009 return(0);
|
|
|
1010 }
|
|
|
1011
|
|
|
1012 static void SetPalette_logical(SDL_Surface *screen, SDL_Color *colors,
|
|
|
1013 int firstcolor, int ncolors)
|
|
|
1014 {
|
|
|
1015 SDL_Palette *pal = screen->format->palette;
|
|
|
1016 SDL_Palette *vidpal;
|
|
|
1017
|
|
|
1018 if ( colors != (pal->colors + firstcolor) ) {
|
|
|
1019 memcpy(pal->colors + firstcolor, colors,
|
|
|
1020 ncolors * sizeof(*colors));
|
|
|
1021 }
|
|
|
1022
|
|
|
1023 vidpal = SDL_VideoSurface->format->palette;
|
|
|
1024 if ( (screen == SDL_ShadowSurface) && vidpal ) {
|
|
|
1025 /*
|
|
|
1026 * This is a shadow surface, and the physical
|
|
|
1027 * framebuffer is also indexed. Propagate the
|
|
|
1028 * changes to its logical palette so that
|
|
|
1029 * updates are always identity blits
|
|
|
1030 */
|
|
|
1031 memcpy(vidpal->colors + firstcolor, colors,
|
|
|
1032 ncolors * sizeof(*colors));
|
|
|
1033 }
|
|
|
1034 SDL_FormatChanged(screen);
|
|
|
1035 }
|
|
|
1036
|
|
|
1037 static int SetPalette_physical(SDL_Surface *screen,
|
|
|
1038 SDL_Color *colors, int firstcolor, int ncolors)
|
|
|
1039 {
|
|
|
1040 SDL_VideoDevice *video = current_video;
|
|
|
1041 int gotall = 1;
|
|
|
1042
|
|
|
1043 if ( video->physpal ) {
|
|
|
1044 /* We need to copy the new colors, since we haven't
|
|
|
1045 * already done the copy in the logical set above.
|
|
|
1046 */
|
|
|
1047 memcpy(video->physpal->colors + firstcolor,
|
|
|
1048 colors, ncolors * sizeof(*colors));
|
|
|
1049 }
|
|
|
1050 if ( screen == SDL_ShadowSurface ) {
|
|
|
1051 if ( SDL_VideoSurface->flags & SDL_HWPALETTE ) {
|
|
|
1052 /*
|
|
|
1053 * The real screen is also indexed - set its physical
|
|
|
1054 * palette. The physical palette does not include the
|
|
|
1055 * gamma modification, we apply it directly instead,
|
|
|
1056 * but this only happens if we have hardware palette.
|
|
|
1057 */
|
|
|
1058 screen = SDL_VideoSurface;
|
|
|
1059 } else {
|
|
|
1060 /*
|
|
|
1061 * The video surface is not indexed - invalidate any
|
|
|
1062 * active shadow-to-video blit mappings.
|
|
|
1063 */
|
|
|
1064 if ( screen->map->dst == SDL_VideoSurface ) {
|
|
|
1065 SDL_InvalidateMap(screen->map);
|
|
|
1066 }
|
|
|
1067 if ( video->gamma ) {
|
|
|
1068 if( ! video->gammacols ) {
|
|
|
1069 SDL_Palette *pp = video->physpal;
|
|
|
1070 if(!pp)
|
|
|
1071 pp = screen->format->palette;
|
|
|
1072 video->gammacols = malloc(pp->ncolors
|
|
|
1073 * sizeof(SDL_Color));
|
|
|
1074 SDL_ApplyGamma(video->gamma,
|
|
|
1075 pp->colors,
|
|
|
1076 video->gammacols,
|
|
|
1077 pp->ncolors);
|
|
|
1078 } else {
|
|
|
1079 SDL_ApplyGamma(video->gamma, colors,
|
|
|
1080 video->gammacols
|
|
|
1081 + firstcolor,
|
|
|
1082 ncolors);
|
|
|
1083 }
|
|
|
1084 }
|
|
|
1085 SDL_UpdateRect(screen, 0, 0, 0, 0);
|
|
|
1086 }
|
|
|
1087 }
|
|
|
1088
|
|
|
1089 if ( screen == SDL_VideoSurface ) {
|
|
|
1090 SDL_Color gcolors[256];
|
|
|
1091
|
|
|
1092 if ( video->gamma ) {
|
|
|
1093 SDL_ApplyGamma(video->gamma, colors, gcolors, ncolors);
|
|
|
1094 colors = gcolors;
|
|
|
1095 }
|
|
|
1096 gotall = video->SetColors(video, firstcolor, ncolors, colors);
|
|
|
1097 if ( ! gotall ) {
|
|
|
1098 /* The video flags shouldn't have SDL_HWPALETTE, and
|
|
|
1099 the video driver is responsible for copying back the
|
|
|
1100 correct colors into the video surface palette.
|
|
|
1101 */
|
|
|
1102 ;
|
|
|
1103 }
|
|
|
1104 SDL_CursorPaletteChanged();
|
|
|
1105 }
|
|
|
1106 return gotall;
|
|
|
1107 }
|
|
|
1108
|
|
|
1109 /*
|
|
|
1110 * Set the physical and/or logical colormap of a surface:
|
|
|
1111 * Only the screen has a physical colormap. It determines what is actually
|
|
|
1112 * sent to the display.
|
|
|
1113 * The logical colormap is used to map blits to/from the surface.
|
|
|
1114 * 'which' is one or both of SDL_LOGPAL, SDL_PHYSPAL
|
|
|
1115 *
|
|
|
1116 * Return nonzero if all colours were set as requested, or 0 otherwise.
|
|
|
1117 */
|
|
|
1118 int SDL_SetPalette(SDL_Surface *screen, int which,
|
|
|
1119 SDL_Color *colors, int firstcolor, int ncolors)
|
|
|
1120 {
|
|
|
1121 SDL_Palette *pal;
|
|
|
1122 int gotall;
|
|
|
1123 int palsize;
|
|
|
1124
|
|
|
1125 if ( screen != SDL_PublicSurface ) {
|
|
|
1126 /* only screens have physical palettes */
|
|
|
1127 which &= ~SDL_PHYSPAL;
|
|
|
1128 } else if( (screen->flags & SDL_HWPALETTE) != SDL_HWPALETTE ) {
|
|
|
1129 /* hardware palettes required for split colormaps */
|
|
|
1130 which |= SDL_PHYSPAL | SDL_LOGPAL;
|
|
|
1131 }
|
|
|
1132
|
|
|
1133 /* Verify the parameters */
|
|
|
1134 pal = screen->format->palette;
|
|
|
1135 if( !pal ) {
|
|
|
1136 return 0; /* not a palettized surface */
|
|
|
1137 }
|
|
|
1138 gotall = 1;
|
|
|
1139 palsize = 1 << screen->format->BitsPerPixel;
|
|
|
1140 if ( ncolors > (palsize - firstcolor) ) {
|
|
|
1141 ncolors = (palsize - firstcolor);
|
|
|
1142 gotall = 0;
|
|
|
1143 }
|
|
|
1144
|
|
|
1145 if ( which & SDL_LOGPAL ) {
|
|
|
1146 /*
|
|
|
1147 * Logical palette change: The actual screen isn't affected,
|
|
|
1148 * but the internal colormap is altered so that the
|
|
|
1149 * interpretation of the pixel values (for blits etc) is
|
|
|
1150 * changed.
|
|
|
1151 */
|
|
|
1152 SetPalette_logical(screen, colors, firstcolor, ncolors);
|
|
|
1153 }
|
|
|
1154 if ( which & SDL_PHYSPAL ) {
|
|
|
1155 SDL_VideoDevice *video = current_video;
|
|
|
1156 /*
|
|
|
1157 * Physical palette change: This doesn't affect the
|
|
|
1158 * program's idea of what the screen looks like, but changes
|
|
|
1159 * its actual appearance.
|
|
|
1160 */
|
|
|
1161 if(!video)
|
|
|
1162 return gotall; /* video not yet initialized */
|
|
|
1163 if(!video->physpal && !(which & SDL_LOGPAL) ) {
|
|
|
1164 /* Lazy physical palette allocation */
|
|
|
1165 int size;
|
|
|
1166 SDL_Palette *pp = malloc(sizeof(*pp));
|
|
|
1167 current_video->physpal = pp;
|
|
|
1168 pp->ncolors = pal->ncolors;
|
|
|
1169 size = pp->ncolors * sizeof(SDL_Color);
|
|
|
1170 pp->colors = malloc(size);
|
|
|
1171 memcpy(pp->colors, pal->colors, size);
|
|
|
1172 }
|
|
|
1173 if ( ! SetPalette_physical(screen,
|
|
|
1174 colors, firstcolor, ncolors) ) {
|
|
|
1175 gotall = 0;
|
|
|
1176 }
|
|
|
1177 }
|
|
|
1178 return gotall;
|
|
|
1179 }
|
|
|
1180
|
|
|
1181 int SDL_SetColors(SDL_Surface *screen, SDL_Color *colors, int firstcolor,
|
|
|
1182 int ncolors)
|
|
|
1183 {
|
|
|
1184 return SDL_SetPalette(screen, SDL_LOGPAL | SDL_PHYSPAL,
|
|
|
1185 colors, firstcolor, ncolors);
|
|
|
1186 }
|
|
|
1187
|
|
|
1188 /*
|
|
|
1189 * Clean up the video subsystem
|
|
|
1190 */
|
|
|
1191 void SDL_VideoQuit (void)
|
|
|
1192 {
|
|
|
1193 SDL_Surface *ready_to_go;
|
|
|
1194
|
|
|
1195 if ( current_video ) {
|
|
|
1196 SDL_VideoDevice *video = current_video;
|
|
|
1197 SDL_VideoDevice *this = current_video;
|
|
|
1198
|
|
|
1199 /* Halt event processing before doing anything else */
|
|
|
1200 SDL_StopEventLoop();
|
|
|
1201
|
|
|
1202 /* Clean up allocated window manager items */
|
|
|
1203 if ( SDL_PublicSurface ) {
|
|
|
1204 SDL_PublicSurface = NULL;
|
|
|
1205 }
|
|
|
1206 SDL_CursorQuit();
|
|
|
1207
|
|
|
1208 /* Just in case... */
|
|
|
1209 SDL_WM_GrabInputOff();
|
|
|
1210
|
|
|
1211 /* Clean up the system video */
|
|
|
1212 video->VideoQuit(this);
|
|
|
1213
|
|
|
1214 /* Free any lingering surfaces */
|
|
|
1215 ready_to_go = SDL_ShadowSurface;
|
|
|
1216 SDL_ShadowSurface = NULL;
|
|
|
1217 SDL_FreeSurface(ready_to_go);
|
|
|
1218 if ( SDL_VideoSurface != NULL ) {
|
|
|
1219 ready_to_go = SDL_VideoSurface;
|
|
|
1220 SDL_VideoSurface = NULL;
|
|
|
1221 SDL_FreeSurface(ready_to_go);
|
|
|
1222 }
|
|
|
1223 SDL_PublicSurface = NULL;
|
|
|
1224
|
|
|
1225 /* Clean up miscellaneous memory */
|
|
|
1226 if ( video->physpal ) {
|
|
|
1227 free(video->physpal->colors);
|
|
|
1228 free(video->physpal);
|
|
|
1229 video->physpal = NULL;
|
|
|
1230 }
|
|
|
1231 if ( video->gammacols ) {
|
|
|
1232 free(video->gammacols);
|
|
|
1233 video->gammacols = NULL;
|
|
|
1234 }
|
|
|
1235 if ( video->gamma ) {
|
|
|
1236 free(video->gamma);
|
|
|
1237 video->gamma = NULL;
|
|
|
1238 }
|
|
|
1239 if ( wm_title != NULL ) {
|
|
|
1240 free(wm_title);
|
|
|
1241 wm_title = NULL;
|
|
|
1242 }
|
|
|
1243 if ( wm_icon != NULL ) {
|
|
|
1244 free(wm_icon);
|
|
|
1245 wm_icon = NULL;
|
|
|
1246 }
|
|
|
1247
|
|
|
1248 /* Finish cleaning up video subsystem */
|
|
|
1249 video->free(this);
|
|
|
1250 current_video = NULL;
|
|
|
1251 }
|
|
|
1252 return;
|
|
|
1253 }
|
|
|
1254
|
|
|
1255 /* Load the GL driver library */
|
|
|
1256 int SDL_GL_LoadLibrary(const char *path)
|
|
|
1257 {
|
|
|
1258 SDL_VideoDevice *video = current_video;
|
|
|
1259 SDL_VideoDevice *this = current_video;
|
|
|
1260 int retval;
|
|
|
1261
|
|
|
1262 retval = -1;
|
|
|
1263 if ( video->GL_LoadLibrary ) {
|
|
|
1264 retval = video->GL_LoadLibrary(this, path);
|
|
|
1265 } else {
|
|
|
1266 SDL_SetError("No dynamic GL support in video driver");
|
|
|
1267 }
|
|
|
1268 return(retval);
|
|
|
1269 }
|
|
|
1270
|
|
|
1271 void *SDL_GL_GetProcAddress(const char* proc)
|
|
|
1272 {
|
|
|
1273 SDL_VideoDevice *video = current_video;
|
|
|
1274 SDL_VideoDevice *this = current_video;
|
|
|
1275 void *func;
|
|
|
1276
|
|
|
1277 func = NULL;
|
|
|
1278 if ( video->GL_GetProcAddress ) {
|
|
|
1279 if ( video->gl_config.driver_loaded ) {
|
|
|
1280 func = video->GL_GetProcAddress(this, proc);
|
|
|
1281 } else {
|
|
|
1282 SDL_SetError("No GL driver has been loaded");
|
|
|
1283 }
|
|
|
1284 } else {
|
|
|
1285 SDL_SetError("No dynamic GL support in video driver");
|
|
|
1286 }
|
|
|
1287 return func;
|
|
|
1288 }
|
|
|
1289
|
|
|
1290 /* Set the specified GL attribute for setting up a GL video mode */
|
|
|
1291 int SDL_GL_SetAttribute( SDL_GLattr attr, int value )
|
|
|
1292 {
|
|
|
1293 int retval;
|
|
|
1294 SDL_VideoDevice *video = current_video;
|
|
|
1295
|
|
|
1296 retval = 0;
|
|
|
1297 switch (attr) {
|
|
|
1298 case SDL_GL_RED_SIZE:
|
|
|
1299 video->gl_config.red_size = value;
|
|
|
1300 break;
|
|
|
1301 case SDL_GL_GREEN_SIZE:
|
|
|
1302 video->gl_config.green_size = value;
|
|
|
1303 break;
|
|
|
1304 case SDL_GL_BLUE_SIZE:
|
|
|
1305 video->gl_config.blue_size = value;
|
|
|
1306 break;
|
|
|
1307 case SDL_GL_ALPHA_SIZE:
|
|
|
1308 video->gl_config.alpha_size = value;
|
|
|
1309 break;
|
|
|
1310 case SDL_GL_DOUBLEBUFFER:
|
|
|
1311 video->gl_config.double_buffer = value;
|
|
|
1312 break;
|
|
|
1313 case SDL_GL_BUFFER_SIZE:
|
|
|
1314 video->gl_config.buffer_size = value;
|
|
|
1315 break;
|
|
|
1316 case SDL_GL_DEPTH_SIZE:
|
|
|
1317 video->gl_config.depth_size = value;
|
|
|
1318 break;
|
|
|
1319 case SDL_GL_STENCIL_SIZE:
|
|
|
1320 video->gl_config.stencil_size = value;
|
|
|
1321 break;
|
|
|
1322 case SDL_GL_ACCUM_RED_SIZE:
|
|
|
1323 video->gl_config.accum_red_size = value;
|
|
|
1324 break;
|
|
|
1325 case SDL_GL_ACCUM_GREEN_SIZE:
|
|
|
1326 video->gl_config.accum_green_size = value;
|
|
|
1327 break;
|
|
|
1328 case SDL_GL_ACCUM_BLUE_SIZE:
|
|
|
1329 video->gl_config.accum_blue_size = value;
|
|
|
1330 break;
|
|
|
1331 case SDL_GL_ACCUM_ALPHA_SIZE:
|
|
|
1332 video->gl_config.accum_alpha_size = value;
|
|
|
1333 break;
|
|
|
1334 default:
|
|
|
1335 SDL_SetError("Unknown OpenGL attribute");
|
|
|
1336 retval = -1;
|
|
|
1337 break;
|
|
|
1338 }
|
|
|
1339 return(retval);
|
|
|
1340 }
|
|
|
1341
|
|
|
1342 /* Retrieve an attribute value from the windowing system. */
|
|
|
1343 int SDL_GL_GetAttribute(SDL_GLattr attr, int* value)
|
|
|
1344 {
|
|
|
1345 int retval = -1;
|
|
|
1346 SDL_VideoDevice* video = current_video;
|
|
|
1347 SDL_VideoDevice* this = current_video;
|
|
|
1348
|
|
|
1349 if ( video->GL_GetAttribute ) {
|
|
|
1350 retval = this->GL_GetAttribute(this, attr, value);
|
|
|
1351 }
|
|
|
1352
|
|
|
1353 return retval;
|
|
|
1354 }
|
|
|
1355
|
|
|
1356 /* Perform a GL buffer swap on the current GL context */
|
|
|
1357 void SDL_GL_SwapBuffers(void)
|
|
|
1358 {
|
|
|
1359 SDL_VideoDevice *video = current_video;
|
|
|
1360 SDL_VideoDevice *this = current_video;
|
|
|
1361
|
|
|
1362 if ( video->screen->flags & SDL_OPENGL ) {
|
|
|
1363 video->GL_SwapBuffers( this );
|
|
|
1364 }
|
|
|
1365 }
|
|
|
1366
|
|
|
1367 /* Update rects with locking */
|
|
|
1368 void SDL_GL_UpdateRectsLock(SDL_VideoDevice* this, int numrects, SDL_Rect *rects)
|
|
|
1369 {
|
|
|
1370 SDL_GL_Lock();
|
|
|
1371 SDL_GL_UpdateRects(numrects, rects);
|
|
|
1372 SDL_GL_Unlock();
|
|
|
1373 }
|
|
|
1374
|
|
|
1375 /* Update rects without state setting and changing (the caller is responsible for it) */
|
|
|
1376 void SDL_GL_UpdateRects(int numrects, SDL_Rect *rects)
|
|
|
1377 {
|
|
|
1378 #ifdef HAVE_OPENGL
|
|
|
1379 SDL_VideoDevice *this = current_video;
|
|
|
1380 SDL_Rect update, tmp;
|
|
|
1381 int x, y, i;
|
|
|
1382
|
|
|
1383 for ( i = 0; i < numrects; i++ )
|
|
|
1384 {
|
|
|
1385 tmp.y = rects[i].y;
|
|
|
1386 tmp.h = rects[i].h;
|
|
|
1387 for ( y = 0; y <= rects[i].h / 256; y++ )
|
|
|
1388 {
|
|
|
1389 tmp.x = rects[i].x;
|
|
|
1390 tmp.w = rects[i].w;
|
|
|
1391 for ( x = 0; x <= rects[i].w / 256; x++ )
|
|
|
1392 {
|
|
|
1393 update.x = tmp.x;
|
|
|
1394 update.y = tmp.y;
|
|
|
1395 update.w = tmp.w;
|
|
|
1396 update.h = tmp.h;
|
|
|
1397
|
|
|
1398 if ( update.w > 256 )
|
|
|
1399 update.w = 256;
|
|
|
1400
|
|
|
1401 if ( update.h > 256 )
|
|
|
1402 update.h = 256;
|
|
|
1403
|
|
|
1404 this->glFlush();
|
|
|
1405 this->glTexSubImage2D(
|
|
|
1406 GL_TEXTURE_2D,
|
|
|
1407 0,
|
|
|
1408 0,
|
|
|
1409 0,
|
|
|
1410 update.w,
|
|
|
1411 update.h,
|
|
|
1412 this->is_32bit? GL_RGBA : GL_RGB,
|
|
|
1413 #ifdef GL_VERSION_1_2
|
|
|
1414 this->is_32bit ? GL_UNSIGNED_BYTE : GL_UNSIGNED_SHORT_5_6_5,
|
|
|
1415 #else
|
|
|
1416 GL_UNSIGNED_BYTE,
|
|
|
1417 #endif
|
|
|
1418 (Uint8 *)this->screen->pixels +
|
|
|
1419 this->screen->format->BytesPerPixel * update.x +
|
|
|
1420 update.y * this->screen->pitch );
|
|
|
1421
|
|
|
1422 this->glFlush();
|
|
|
1423 /*
|
|
|
1424 * Note the parens around the function name:
|
|
|
1425 * This is because some OpenGL implementations define glTexCoord etc
|
|
|
1426 * as macros, and we don't want them expanded here.
|
|
|
1427 */
|
|
|
1428 this->glBegin(GL_TRIANGLE_STRIP);
|
|
|
1429 (this->glTexCoord2f)( 0.0, 0.0 );
|
|
|
1430 (this->glVertex2i)( update.x, update.y );
|
|
|
1431 (this->glTexCoord2f)( (float)(update.w / 256.0), 0.0 );
|
|
|
1432 (this->glVertex2i)( update.x + update.w, update.y );
|
|
|
1433 (this->glTexCoord2f)( 0.0, (float)(update.h / 256.0) );
|
|
|
1434 (this->glVertex2i)( update.x, update.y + update.h );
|
|
|
1435 (this->glTexCoord2f)( (float)(update.w / 256.0), (float)(update.h / 256.0) );
|
|
|
1436 (this->glVertex2i)( update.x + update.w , update.y + update.h );
|
|
|
1437 this->glEnd();
|
|
|
1438
|
|
|
1439 tmp.x += 256;
|
|
|
1440 tmp.w -= 256;
|
|
|
1441 }
|
|
|
1442 tmp.y += 256;
|
|
|
1443 tmp.h -= 256;
|
|
|
1444 }
|
|
|
1445 }
|
|
|
1446 #endif
|
|
|
1447 }
|
|
|
1448
|
|
|
1449 /* Lock == save current state */
|
|
|
1450 void SDL_GL_Lock()
|
|
|
1451 {
|
|
|
1452 #ifdef HAVE_OPENGL
|
|
|
1453 lock_count--;
|
|
|
1454 if (lock_count==-1)
|
|
|
1455 {
|
|
|
1456 SDL_VideoDevice *this = current_video;
|
|
|
1457
|
|
|
1458 this->glPushAttrib( GL_ALL_ATTRIB_BITS ); /* TODO: narrow range of what is saved */
|
|
|
1459 this->glPushClientAttrib( GL_CLIENT_PIXEL_STORE_BIT );
|
|
|
1460
|
|
|
1461 this->glEnable(GL_TEXTURE_2D);
|
|
|
1462 this->glEnable(GL_BLEND);
|
|
|
1463 this->glDisable(GL_FOG);
|
|
|
1464 this->glDisable(GL_ALPHA_TEST);
|
|
|
1465 this->glDisable(GL_DEPTH_TEST);
|
|
|
1466 this->glDisable(GL_SCISSOR_TEST);
|
|
|
1467 this->glDisable(GL_STENCIL_TEST);
|
|
|
1468 this->glDisable(GL_CULL_FACE);
|
|
|
1469
|
|
|
1470 this->glBindTexture( GL_TEXTURE_2D, this->texture );
|
|
|
1471 this->glTexEnvf( GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE );
|
|
|
1472 this->glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST );
|
|
|
1473 this->glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST );
|
|
|
1474 this->glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT );
|
|
|
1475 this->glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT );
|
|
|
1476
|
|
|
1477 this->glPixelStorei( GL_UNPACK_ROW_LENGTH, this->screen->pitch / this->screen->format->BytesPerPixel );
|
|
|
1478 this->glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
|
|
|
1479 (this->glColor4f)(1.0, 1.0, 1.0, 1.0); /* Solaris workaround */
|
|
|
1480
|
|
|
1481 this->glViewport(0, 0, this->screen->w, this->screen->h);
|
|
|
1482 this->glMatrixMode(GL_PROJECTION);
|
|
|
1483 this->glPushMatrix();
|
|
|
1484 this->glLoadIdentity();
|
|
|
1485
|
|
|
1486 this->glOrtho(0.0, (GLdouble) this->screen->w, (GLdouble) this->screen->h, 0.0, 0.0, 1.0);
|
|
|
1487
|
|
|
1488 this->glMatrixMode(GL_MODELVIEW);
|
|
|
1489 this->glPushMatrix();
|
|
|
1490 this->glLoadIdentity();
|
|
|
1491 }
|
|
|
1492 #endif
|
|
|
1493 }
|
|
|
1494
|
|
|
1495 /* Unlock == restore saved state */
|
|
|
1496 void SDL_GL_Unlock()
|
|
|
1497 {
|
|
|
1498 #ifdef HAVE_OPENGL
|
|
|
1499 lock_count++;
|
|
|
1500 if (lock_count==0)
|
|
|
1501 {
|
|
|
1502 SDL_VideoDevice *this = current_video;
|
|
|
1503
|
|
|
1504 this->glPopMatrix();
|
|
|
1505 this->glMatrixMode(GL_PROJECTION);
|
|
|
1506 this->glPopMatrix();
|
|
|
1507
|
|
|
1508 this->glPopClientAttrib();
|
|
|
1509 this->glPopAttrib();
|
|
|
1510 }
|
|
|
1511 #endif
|
|
|
1512 }
|
|
|
1513
|
|
|
1514 /*
|
|
|
1515 * Sets/Gets the title and icon text of the display window, if any.
|
|
|
1516 */
|
|
|
1517 void SDL_WM_SetCaption (const char *title, const char *icon)
|
|
|
1518 {
|
|
|
1519 SDL_VideoDevice *video = current_video;
|
|
|
1520 SDL_VideoDevice *this = current_video;
|
|
|
1521
|
|
|
1522 if ( title ) {
|
|
|
1523 if ( wm_title ) {
|
|
|
1524 free(wm_title);
|
|
|
1525 }
|
|
|
1526 wm_title = (char *)malloc(strlen(title)+1);
|
|
|
1527 if ( wm_title != NULL ) {
|
|
|
1528 strcpy(wm_title, title);
|
|
|
1529 }
|
|
|
1530 }
|
|
|
1531 if ( icon ) {
|
|
|
1532 if ( wm_icon ) {
|
|
|
1533 free(wm_icon);
|
|
|
1534 }
|
|
|
1535 wm_icon = (char *)malloc(strlen(icon)+1);
|
|
|
1536 if ( wm_icon != NULL ) {
|
|
|
1537 strcpy(wm_icon, icon);
|
|
|
1538 }
|
|
|
1539 }
|
|
|
1540 if ( (title || icon) && video && (video->SetCaption != NULL) ) {
|
|
|
1541 video->SetCaption(this, wm_title, wm_icon);
|
|
|
1542 }
|
|
|
1543 }
|
|
|
1544 void SDL_WM_GetCaption (char **title, char **icon)
|
|
|
1545 {
|
|
|
1546 if ( title ) {
|
|
|
1547 *title = wm_title;
|
|
|
1548 }
|
|
|
1549 if ( icon ) {
|
|
|
1550 *icon = wm_icon;
|
|
|
1551 }
|
|
|
1552 }
|
|
|
1553
|
|
|
1554 /* Utility function used by SDL_WM_SetIcon() */
|
|
|
1555 static void CreateMaskFromColorKey(SDL_Surface *icon, Uint8 *mask)
|
|
|
1556 {
|
|
|
1557 int x, y;
|
|
|
1558 Uint32 colorkey;
|
|
|
1559 #define SET_MASKBIT(icon, x, y, mask) \
|
|
|
1560 mask[(y*((icon->w+7)/8))+(x/8)] &= ~(0x01<<(7-(x%8)))
|
|
|
1561
|
|
|
1562 colorkey = icon->format->colorkey;
|
|
|
1563 switch (icon->format->BytesPerPixel) {
|
|
|
1564 case 1: { Uint8 *pixels;
|
|
|
1565 for ( y=0; y<icon->h; ++y ) {
|
|
|
1566 pixels = (Uint8 *)icon->pixels + y*icon->pitch;
|
|
|
1567 for ( x=0; x<icon->w; ++x ) {
|
|
|
1568 if ( *pixels++ == colorkey ) {
|
|
|
1569 SET_MASKBIT(icon, x, y, mask);
|
|
|
1570 }
|
|
|
1571 }
|
|
|
1572 }
|
|
|
1573 }
|
|
|
1574 break;
|
|
|
1575
|
|
|
1576 case 2: { Uint16 *pixels;
|
|
|
1577 for ( y=0; y<icon->h; ++y ) {
|
|
|
1578 pixels = (Uint16 *)icon->pixels +
|
|
|
1579 y*icon->pitch/2;
|
|
|
1580 for ( x=0; x<icon->w; ++x ) {
|
|
|
1581 if ( *pixels++ == colorkey ) {
|
|
|
1582 SET_MASKBIT(icon, x, y, mask);
|
|
|
1583 }
|
|
|
1584 }
|
|
|
1585 }
|
|
|
1586 }
|
|
|
1587 break;
|
|
|
1588
|
|
|
1589 case 4: { Uint32 *pixels;
|
|
|
1590 for ( y=0; y<icon->h; ++y ) {
|
|
|
1591 pixels = (Uint32 *)icon->pixels +
|
|
|
1592 y*icon->pitch/4;
|
|
|
1593 for ( x=0; x<icon->w; ++x ) {
|
|
|
1594 if ( *pixels++ == colorkey ) {
|
|
|
1595 SET_MASKBIT(icon, x, y, mask);
|
|
|
1596 }
|
|
|
1597 }
|
|
|
1598 }
|
|
|
1599 }
|
|
|
1600 break;
|
|
|
1601 }
|
|
|
1602 }
|
|
|
1603
|
|
|
1604 /*
|
|
|
1605 * Sets the window manager icon for the display window.
|
|
|
1606 */
|
|
|
1607 void SDL_WM_SetIcon (SDL_Surface *icon, Uint8 *mask)
|
|
|
1608 {
|
|
|
1609 SDL_VideoDevice *video = current_video;
|
|
|
1610 SDL_VideoDevice *this = current_video;
|
|
|
1611
|
|
|
1612 if ( icon && video->SetIcon ) {
|
|
|
1613 /* Generate a mask if necessary, and create the icon! */
|
|
|
1614 if ( mask == NULL ) {
|
|
|
1615 int mask_len = icon->h*(icon->w+7)/8;
|
|
|
1616 mask = (Uint8 *)malloc(mask_len);
|
|
|
1617 if ( mask == NULL ) {
|
|
|
1618 return;
|
|
|
1619 }
|
|
|
1620 memset(mask, ~0, mask_len);
|
|
|
1621 if ( icon->flags & SDL_SRCCOLORKEY ) {
|
|
|
1622 CreateMaskFromColorKey(icon, mask);
|
|
|
1623 }
|
|
|
1624 video->SetIcon(video, icon, mask);
|
|
|
1625 free(mask);
|
|
|
1626 } else {
|
|
|
1627 video->SetIcon(this, icon, mask);
|
|
|
1628 }
|
|
|
1629 }
|
|
|
1630 }
|
|
|
1631
|
|
|
1632 /*
|
|
|
1633 * Grab or ungrab the keyboard and mouse input.
|
|
|
1634 * This function returns the final grab mode after calling the
|
|
|
1635 * driver dependent function.
|
|
|
1636 */
|
|
|
1637 static SDL_GrabMode SDL_WM_GrabInputRaw(SDL_GrabMode mode)
|
|
|
1638 {
|
|
|
1639 SDL_VideoDevice *video = current_video;
|
|
|
1640 SDL_VideoDevice *this = current_video;
|
|
|
1641
|
|
|
1642 /* Only do something if we have support for grabs */
|
|
|
1643 if ( video->GrabInput == NULL ) {
|
|
|
1644 return(video->input_grab);
|
|
|
1645 }
|
|
|
1646
|
|
|
1647 /* If the final grab mode if off, only then do we actually grab */
|
|
|
1648 #ifdef DEBUG_GRAB
|
|
|
1649 printf("SDL_WM_GrabInputRaw(%d) ... ", mode);
|
|
|
1650 #endif
|
|
|
1651 if ( mode == SDL_GRAB_OFF ) {
|
|
|
1652 if ( video->input_grab != SDL_GRAB_OFF ) {
|
|
|
1653 mode = video->GrabInput(this, mode);
|
|
|
1654 }
|
|
|
1655 } else {
|
|
|
1656 if ( video->input_grab == SDL_GRAB_OFF ) {
|
|
|
1657 mode = video->GrabInput(this, mode);
|
|
|
1658 }
|
|
|
1659 }
|
|
|
1660 if ( mode != video->input_grab ) {
|
|
|
1661 video->input_grab = mode;
|
|
|
1662 if ( video->CheckMouseMode ) {
|
|
|
1663 video->CheckMouseMode(this);
|
|
|
1664 }
|
|
|
1665 }
|
|
|
1666 #ifdef DEBUG_GRAB
|
|
|
1667 printf("Final mode %d\n", video->input_grab);
|
|
|
1668 #endif
|
|
|
1669
|
|
|
1670 /* Return the final grab state */
|
|
|
1671 if ( mode >= SDL_GRAB_FULLSCREEN ) {
|
|
|
1672 mode -= SDL_GRAB_FULLSCREEN;
|
|
|
1673 }
|
|
|
1674 return(mode);
|
|
|
1675 }
|
|
|
1676 SDL_GrabMode SDL_WM_GrabInput(SDL_GrabMode mode)
|
|
|
1677 {
|
|
|
1678 SDL_VideoDevice *video = current_video;
|
|
|
1679
|
|
|
1680 /* If the video isn't initialized yet, we can't do anything */
|
|
|
1681 if ( ! video ) {
|
|
|
1682 return SDL_GRAB_OFF;
|
|
|
1683 }
|
|
|
1684
|
|
|
1685 /* Return the current mode on query */
|
|
|
1686 if ( mode == SDL_GRAB_QUERY ) {
|
|
|
1687 mode = video->input_grab;
|
|
|
1688 if ( mode >= SDL_GRAB_FULLSCREEN ) {
|
|
|
1689 mode -= SDL_GRAB_FULLSCREEN;
|
|
|
1690 }
|
|
|
1691 return(mode);
|
|
|
1692 }
|
|
|
1693
|
|
|
1694 #ifdef DEBUG_GRAB
|
|
|
1695 printf("SDL_WM_GrabInput(%d) ... ", mode);
|
|
|
1696 #endif
|
|
|
1697 /* If the video surface is fullscreen, we always grab */
|
|
|
1698 if ( mode >= SDL_GRAB_FULLSCREEN ) {
|
|
|
1699 mode -= SDL_GRAB_FULLSCREEN;
|
|
|
1700 }
|
|
|
1701 if ( SDL_VideoSurface && (SDL_VideoSurface->flags & SDL_FULLSCREEN) ) {
|
|
|
1702 mode += SDL_GRAB_FULLSCREEN;
|
|
|
1703 }
|
|
|
1704 return(SDL_WM_GrabInputRaw(mode));
|
|
|
1705 }
|
|
|
1706 static SDL_GrabMode SDL_WM_GrabInputOff(void)
|
|
|
1707 {
|
|
|
1708 SDL_GrabMode mode;
|
|
|
1709
|
|
|
1710 /* First query the current grab state */
|
|
|
1711 mode = SDL_WM_GrabInput(SDL_GRAB_QUERY);
|
|
|
1712
|
|
|
1713 /* Now explicitly turn off input grab */
|
|
|
1714 SDL_WM_GrabInputRaw(SDL_GRAB_OFF);
|
|
|
1715
|
|
|
1716 /* Return the old state */
|
|
|
1717 return(mode);
|
|
|
1718 }
|
|
|
1719
|
|
|
1720 /*
|
|
|
1721 * Iconify the window in window managed environments.
|
|
|
1722 * A successful iconification will result in an SDL_APPACTIVE loss event.
|
|
|
1723 */
|
|
|
1724 int SDL_WM_IconifyWindow(void)
|
|
|
1725 {
|
|
|
1726 SDL_VideoDevice *video = current_video;
|
|
|
1727 SDL_VideoDevice *this = current_video;
|
|
|
1728 int retval;
|
|
|
1729
|
|
|
1730 retval = 0;
|
|
|
1731 if ( video->IconifyWindow ) {
|
|
|
1732 retval = video->IconifyWindow(this);
|
|
|
1733 }
|
|
|
1734 return(retval);
|
|
|
1735 }
|
|
|
1736
|
|
|
1737 /*
|
|
|
1738 * Toggle fullscreen mode
|
|
|
1739 */
|
|
|
1740 int SDL_WM_ToggleFullScreen(SDL_Surface *surface)
|
|
|
1741 {
|
|
|
1742 SDL_VideoDevice *video = current_video;
|
|
|
1743 SDL_VideoDevice *this = current_video;
|
|
|
1744 int toggled;
|
|
|
1745
|
|
|
1746 toggled = 0;
|
|
|
1747 if ( SDL_PublicSurface && (surface == SDL_PublicSurface) &&
|
|
|
1748 video->ToggleFullScreen ) {
|
|
|
1749 if ( surface->flags & SDL_FULLSCREEN ) {
|
|
|
1750 toggled = video->ToggleFullScreen(this, 0);
|
|
|
1751 if ( toggled ) {
|
|
|
1752 SDL_VideoSurface->flags &= ~SDL_FULLSCREEN;
|
|
|
1753 SDL_PublicSurface->flags &= ~SDL_FULLSCREEN;
|
|
|
1754 }
|
|
|
1755 } else {
|
|
|
1756 toggled = video->ToggleFullScreen(this, 1);
|
|
|
1757 if ( toggled ) {
|
|
|
1758 SDL_VideoSurface->flags |= SDL_FULLSCREEN;
|
|
|
1759 SDL_PublicSurface->flags |= SDL_FULLSCREEN;
|
|
|
1760 }
|
|
|
1761 }
|
|
|
1762 /* Double-check the grab state inside SDL_WM_GrabInput() */
|
|
|
1763 if ( toggled ) {
|
|
|
1764 SDL_WM_GrabInput(video->input_grab);
|
|
|
1765 }
|
|
|
1766 }
|
|
|
1767 return(toggled);
|
|
|
1768 }
|
|
|
1769
|
|
|
1770 /*
|
|
|
1771 * Get some platform dependent window manager information
|
|
|
1772 */
|
|
|
1773 int SDL_GetWMInfo (SDL_SysWMinfo *info)
|
|
|
1774 {
|
|
|
1775 SDL_VideoDevice *video = current_video;
|
|
|
1776 SDL_VideoDevice *this = current_video;
|
|
|
1777
|
|
|
1778 if ( video && video->GetWMInfo ) {
|
|
|
1779 return(video->GetWMInfo(this, info));
|
|
|
1780 } else {
|
|
|
1781 return(0);
|
|
|
1782 }
|
|
|
1783 }
|
