Mercurial > sdl-ios-xcode
annotate src/video/SDL_video.c @ 4159:a1b03ba2fcd0 SDL-1.2
Updated copyright date
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Mon, 08 Dec 2008 00:25:42 +0000 |
| parents | 4433ef2a1802 |
| children | 3b8ac3d311a2 |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 2 SDL - Simple DirectMedia Layer | |
| 4159 | 3 Copyright (C) 1997-2009 Sam Lantinga |
| 0 | 4 |
| 5 This library is free software; you can redistribute it and/or | |
|
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6 modify it under the terms of the GNU Lesser General Public |
| 0 | 7 License as published by the Free Software Foundation; either |
|
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8 version 2.1 of the License, or (at your option) any later version. |
| 0 | 9 |
| 10 This library is distributed in the hope that it will be useful, | |
| 11 but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
|
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13 Lesser General Public License for more details. |
| 0 | 14 |
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15 You should have received a copy of the GNU Lesser General Public |
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16 License along with this library; if not, write to the Free Software |
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17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
| 0 | 18 |
| 19 Sam Lantinga | |
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20 slouken@libsdl.org |
| 0 | 21 */ |
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22 #include "SDL_config.h" |
| 0 | 23 |
| 24 /* The high-level video driver subsystem */ | |
| 25 | |
| 26 #include "SDL.h" | |
| 27 #include "SDL_sysvideo.h" | |
| 28 #include "SDL_blit.h" | |
| 29 #include "SDL_pixels_c.h" | |
| 30 #include "SDL_cursor_c.h" | |
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31 #include "../events/SDL_sysevents.h" |
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32 #include "../events/SDL_events_c.h" |
| 0 | 33 |
| 34 /* Available video drivers */ | |
| 35 static VideoBootStrap *bootstrap[] = { | |
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36 #if SDL_VIDEO_DRIVER_QUARTZ |
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37 &QZ_bootstrap, |
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38 #endif |
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39 #if SDL_VIDEO_DRIVER_X11 |
| 0 | 40 &X11_bootstrap, |
| 41 #endif | |
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42 #if SDL_VIDEO_DRIVER_DGA |
| 0 | 43 &DGA_bootstrap, |
| 44 #endif | |
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45 #if SDL_VIDEO_DRIVER_NANOX |
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46 &NX_bootstrap, |
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47 #endif |
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48 #if SDL_VIDEO_DRIVER_IPOD |
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49 &iPod_bootstrap, |
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50 #endif |
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51 #if SDL_VIDEO_DRIVER_QTOPIA |
| 567 | 52 &Qtopia_bootstrap, |
| 53 #endif | |
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54 #if SDL_VIDEO_DRIVER_WSCONS |
| 1187 | 55 &WSCONS_bootstrap, |
| 56 #endif | |
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57 #if SDL_VIDEO_DRIVER_FBCON |
| 0 | 58 &FBCON_bootstrap, |
| 59 #endif | |
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60 #if SDL_VIDEO_DRIVER_DIRECTFB |
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61 &DirectFB_bootstrap, |
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62 #endif |
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63 #if SDL_VIDEO_DRIVER_PS2GS |
| 0 | 64 &PS2GS_bootstrap, |
| 65 #endif | |
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66 #if SDL_VIDEO_DRIVER_GGI |
| 0 | 67 &GGI_bootstrap, |
| 68 #endif | |
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69 #if SDL_VIDEO_DRIVER_VGL |
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70 &VGL_bootstrap, |
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71 #endif |
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72 #if SDL_VIDEO_DRIVER_SVGALIB |
| 0 | 73 &SVGALIB_bootstrap, |
| 74 #endif | |
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75 #if SDL_VIDEO_DRIVER_GAPI |
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76 &GAPI_bootstrap, |
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77 #endif |
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78 #if SDL_VIDEO_DRIVER_WINDIB |
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79 &WINDIB_bootstrap, |
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80 #endif |
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81 #if SDL_VIDEO_DRIVER_DDRAW |
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82 &DIRECTX_bootstrap, |
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83 #endif |
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84 #if SDL_VIDEO_DRIVER_BWINDOW |
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85 &BWINDOW_bootstrap, |
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86 #endif |
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87 #if SDL_VIDEO_DRIVER_TOOLBOX |
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88 &TOOLBOX_bootstrap, |
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89 #endif |
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90 #if SDL_VIDEO_DRIVER_DRAWSPROCKET |
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91 &DSp_bootstrap, |
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92 #endif |
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93 #if SDL_VIDEO_DRIVER_PHOTON |
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94 &ph_bootstrap, |
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95 #endif |
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96 #if SDL_VIDEO_DRIVER_EPOC |
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97 &EPOC_bootstrap, |
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98 #endif |
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99 #if SDL_VIDEO_DRIVER_XBIOS |
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100 &XBIOS_bootstrap, |
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101 #endif |
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102 #if SDL_VIDEO_DRIVER_GEM |
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103 &GEM_bootstrap, |
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104 #endif |
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105 #if SDL_VIDEO_DRIVER_PICOGUI |
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106 &PG_bootstrap, |
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107 #endif |
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108 #if SDL_VIDEO_DRIVER_DC |
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109 &DC_bootstrap, |
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110 #endif |
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111 #if SDL_VIDEO_DRIVER_NDS |
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112 &NDS_bootstrap, |
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113 #endif |
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114 #if SDL_VIDEO_DRIVER_RISCOS |
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115 &RISCOS_bootstrap, |
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116 #endif |
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117 #if SDL_VIDEO_DRIVER_OS2FS |
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118 &OS2FSLib_bootstrap, |
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119 #endif |
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120 #if SDL_VIDEO_DRIVER_AALIB |
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121 &AALIB_bootstrap, |
| 0 | 122 #endif |
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123 #if SDL_VIDEO_DRIVER_DUMMY |
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124 &DUMMY_bootstrap, |
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125 #endif |
| 0 | 126 NULL |
| 127 }; | |
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128 |
| 0 | 129 SDL_VideoDevice *current_video = NULL; |
| 130 | |
| 131 /* Various local functions */ | |
| 132 int SDL_VideoInit(const char *driver_name, Uint32 flags); | |
| 133 void SDL_VideoQuit(void); | |
| 134 void SDL_GL_UpdateRectsLock(SDL_VideoDevice* this, int numrects, SDL_Rect* rects); | |
| 135 | |
| 136 static SDL_GrabMode SDL_WM_GrabInputOff(void); | |
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137 #if SDL_VIDEO_OPENGL |
| 0 | 138 static int lock_count = 0; |
| 139 #endif | |
| 140 | |
| 141 | |
| 142 /* | |
| 143 * Initialize the video and event subsystems -- determine native pixel format | |
| 144 */ | |
| 145 int SDL_VideoInit (const char *driver_name, Uint32 flags) | |
| 146 { | |
| 147 SDL_VideoDevice *video; | |
| 148 int index; | |
| 149 int i; | |
| 150 SDL_PixelFormat vformat; | |
| 151 Uint32 video_flags; | |
| 152 | |
| 153 /* Toggle the event thread flags, based on OS requirements */ | |
| 154 #if defined(MUST_THREAD_EVENTS) | |
| 155 flags |= SDL_INIT_EVENTTHREAD; | |
| 156 #elif defined(CANT_THREAD_EVENTS) | |
| 157 if ( (flags & SDL_INIT_EVENTTHREAD) == SDL_INIT_EVENTTHREAD ) { | |
| 158 SDL_SetError("OS doesn't support threaded events"); | |
| 159 return(-1); | |
| 160 } | |
| 161 #endif | |
| 162 | |
| 163 /* Check to make sure we don't overwrite 'current_video' */ | |
| 164 if ( current_video != NULL ) { | |
| 165 SDL_VideoQuit(); | |
| 166 } | |
| 167 | |
| 168 /* Select the proper video driver */ | |
| 169 index = 0; | |
| 170 video = NULL; | |
| 171 if ( driver_name != NULL ) { | |
| 172 #if 0 /* This will be replaced with a better driver selection API */ | |
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173 if ( SDL_strrchr(driver_name, ':') != NULL ) { |
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174 index = atoi(SDL_strrchr(driver_name, ':')+1); |
| 0 | 175 } |
| 176 #endif | |
| 177 for ( i=0; bootstrap[i]; ++i ) { | |
| 3882 | 178 if ( SDL_strcasecmp(bootstrap[i]->name, driver_name) == 0) { |
| 0 | 179 if ( bootstrap[i]->available() ) { |
| 180 video = bootstrap[i]->create(index); | |
| 181 break; | |
| 182 } | |
| 183 } | |
| 184 } | |
| 185 } else { | |
| 186 for ( i=0; bootstrap[i]; ++i ) { | |
| 187 if ( bootstrap[i]->available() ) { | |
| 188 video = bootstrap[i]->create(index); | |
| 189 if ( video != NULL ) { | |
| 190 break; | |
| 191 } | |
| 192 } | |
| 193 } | |
| 194 } | |
| 195 if ( video == NULL ) { | |
| 196 SDL_SetError("No available video device"); | |
| 197 return(-1); | |
| 198 } | |
| 199 current_video = video; | |
| 200 current_video->name = bootstrap[i]->name; | |
| 201 | |
| 202 /* Do some basic variable initialization */ | |
| 203 video->screen = NULL; | |
| 204 video->shadow = NULL; | |
| 205 video->visible = NULL; | |
| 206 video->physpal = NULL; | |
| 207 video->gammacols = NULL; | |
| 208 video->gamma = NULL; | |
| 209 video->wm_title = NULL; | |
| 210 video->wm_icon = NULL; | |
| 211 video->offset_x = 0; | |
| 212 video->offset_y = 0; | |
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213 SDL_memset(&video->info, 0, (sizeof video->info)); |
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214 |
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215 video->displayformatalphapixel = NULL; |
| 0 | 216 |
| 217 /* Set some very sane GL defaults */ | |
| 218 video->gl_config.driver_loaded = 0; | |
| 219 video->gl_config.dll_handle = NULL; | |
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220 video->gl_config.red_size = 3; |
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221 video->gl_config.green_size = 3; |
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222 video->gl_config.blue_size = 2; |
| 0 | 223 video->gl_config.alpha_size = 0; |
| 224 video->gl_config.buffer_size = 0; | |
| 225 video->gl_config.depth_size = 16; | |
| 226 video->gl_config.stencil_size = 0; | |
| 227 video->gl_config.double_buffer = 1; | |
| 228 video->gl_config.accum_red_size = 0; | |
| 229 video->gl_config.accum_green_size = 0; | |
| 230 video->gl_config.accum_blue_size = 0; | |
| 231 video->gl_config.accum_alpha_size = 0; | |
|
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232 video->gl_config.stereo = 0; |
|
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233 video->gl_config.multisamplebuffers = 0; |
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234 video->gl_config.multisamplesamples = 0; |
| 1737 | 235 video->gl_config.accelerated = -1; /* not known, don't set */ |
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236 video->gl_config.swap_control = -1; /* not known, don't set */ |
| 0 | 237 |
| 238 /* Initialize the video subsystem */ | |
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239 SDL_memset(&vformat, 0, sizeof(vformat)); |
| 0 | 240 if ( video->VideoInit(video, &vformat) < 0 ) { |
| 241 SDL_VideoQuit(); | |
| 242 return(-1); | |
| 243 } | |
| 244 | |
| 245 /* Create a zero sized video surface of the appropriate format */ | |
| 246 video_flags = SDL_SWSURFACE; | |
| 247 SDL_VideoSurface = SDL_CreateRGBSurface(video_flags, 0, 0, | |
| 248 vformat.BitsPerPixel, | |
| 249 vformat.Rmask, vformat.Gmask, vformat.Bmask, 0); | |
| 250 if ( SDL_VideoSurface == NULL ) { | |
| 251 SDL_VideoQuit(); | |
| 252 return(-1); | |
| 253 } | |
| 254 SDL_PublicSurface = NULL; /* Until SDL_SetVideoMode() */ | |
| 255 | |
| 256 #if 0 /* Don't change the current palette - may be used by other programs. | |
| 257 * The application can't do anything with the display surface until | |
| 258 * a video mode has been set anyway. :) | |
| 259 */ | |
| 260 /* If we have a palettized surface, create a default palette */ | |
| 261 if ( SDL_VideoSurface->format->palette ) { | |
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262 SDL_PixelFormat *vf = SDL_VideoSurface->format; |
| 0 | 263 SDL_DitherColors(vf->palette->colors, vf->BitsPerPixel); |
| 264 video->SetColors(video, | |
| 265 0, vf->palette->ncolors, vf->palette->colors); | |
| 266 } | |
| 267 #endif | |
| 268 video->info.vfmt = SDL_VideoSurface->format; | |
| 269 | |
| 270 /* Start the event loop */ | |
| 271 if ( SDL_StartEventLoop(flags) < 0 ) { | |
| 272 SDL_VideoQuit(); | |
| 273 return(-1); | |
| 274 } | |
| 275 SDL_CursorInit(flags & SDL_INIT_EVENTTHREAD); | |
| 276 | |
| 277 /* We're ready to go! */ | |
| 278 return(0); | |
| 279 } | |
| 280 | |
| 281 char *SDL_VideoDriverName(char *namebuf, int maxlen) | |
| 282 { | |
| 283 if ( current_video != NULL ) { | |
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284 SDL_strlcpy(namebuf, current_video->name, maxlen); |
| 0 | 285 return(namebuf); |
| 286 } | |
| 287 return(NULL); | |
| 288 } | |
| 289 | |
| 290 /* | |
| 291 * Get the current display surface | |
| 292 */ | |
| 293 SDL_Surface *SDL_GetVideoSurface(void) | |
| 294 { | |
| 295 SDL_Surface *visible; | |
| 296 | |
| 297 visible = NULL; | |
| 298 if ( current_video ) { | |
| 299 visible = current_video->visible; | |
| 300 } | |
| 301 return(visible); | |
| 302 } | |
| 303 | |
| 304 /* | |
| 305 * Get the current information about the video hardware | |
| 306 */ | |
| 307 const SDL_VideoInfo *SDL_GetVideoInfo(void) | |
| 308 { | |
| 309 const SDL_VideoInfo *info; | |
| 310 | |
| 311 info = NULL; | |
| 312 if ( current_video ) { | |
| 313 info = ¤t_video->info; | |
| 314 } | |
| 315 return(info); | |
| 316 } | |
| 317 | |
| 318 /* | |
| 319 * Return a pointer to an array of available screen dimensions for the | |
| 320 * given format, sorted largest to smallest. Returns NULL if there are | |
| 321 * no dimensions available for a particular format, or (SDL_Rect **)-1 | |
| 322 * if any dimension is okay for the given format. If 'format' is NULL, | |
| 323 * the mode list will be for the format given by SDL_GetVideoInfo()->vfmt | |
| 324 */ | |
| 325 SDL_Rect ** SDL_ListModes (SDL_PixelFormat *format, Uint32 flags) | |
| 326 { | |
| 327 SDL_VideoDevice *video = current_video; | |
| 328 SDL_VideoDevice *this = current_video; | |
| 329 SDL_Rect **modes; | |
| 330 | |
| 331 modes = NULL; | |
| 332 if ( SDL_VideoSurface ) { | |
| 333 if ( format == NULL ) { | |
| 334 format = SDL_VideoSurface->format; | |
| 335 } | |
| 336 modes = video->ListModes(this, format, flags); | |
| 337 } | |
| 338 return(modes); | |
| 339 } | |
| 340 | |
| 341 /* | |
| 342 * Check to see if a particular video mode is supported. | |
| 343 * It returns 0 if the requested mode is not supported under any bit depth, | |
| 344 * or returns the bits-per-pixel of the closest available mode with the | |
| 345 * given width and height. If this bits-per-pixel is different from the | |
| 346 * one used when setting the video mode, SDL_SetVideoMode() will succeed, | |
| 347 * but will emulate the requested bits-per-pixel with a shadow surface. | |
| 348 */ | |
| 349 static Uint8 SDL_closest_depths[4][8] = { | |
| 350 /* 8 bit closest depth ordering */ | |
| 351 { 0, 8, 16, 15, 32, 24, 0, 0 }, | |
| 352 /* 15,16 bit closest depth ordering */ | |
| 353 { 0, 16, 15, 32, 24, 8, 0, 0 }, | |
| 354 /* 24 bit closest depth ordering */ | |
| 355 { 0, 24, 32, 16, 15, 8, 0, 0 }, | |
| 356 /* 32 bit closest depth ordering */ | |
| 357 { 0, 32, 16, 15, 24, 8, 0, 0 } | |
| 358 }; | |
| 359 | |
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360 |
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361 #ifdef __MACOS__ /* MPW optimization bug? */ |
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362 #define NEGATIVE_ONE 0xFFFFFFFF |
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363 #else |
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364 #define NEGATIVE_ONE -1 |
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365 #endif |
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366 |
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367 int SDL_VideoModeOK (int width, int height, int bpp, Uint32 flags) |
| 0 | 368 { |
| 369 int table, b, i; | |
| 370 int supported; | |
| 371 SDL_PixelFormat format; | |
| 372 SDL_Rect **sizes; | |
| 373 | |
| 374 /* Currently 1 and 4 bpp are not supported */ | |
| 375 if ( bpp < 8 || bpp > 32 ) { | |
| 376 return(0); | |
| 377 } | |
|
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378 if ( (width <= 0) || (height <= 0) ) { |
| 0 | 379 return(0); |
| 380 } | |
| 381 | |
| 382 /* Search through the list valid of modes */ | |
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383 SDL_memset(&format, 0, sizeof(format)); |
| 0 | 384 supported = 0; |
| 385 table = ((bpp+7)/8)-1; | |
| 386 SDL_closest_depths[table][0] = bpp; | |
| 387 SDL_closest_depths[table][7] = 0; | |
| 388 for ( b = 0; !supported && SDL_closest_depths[table][b]; ++b ) { | |
| 389 format.BitsPerPixel = SDL_closest_depths[table][b]; | |
| 390 sizes = SDL_ListModes(&format, flags); | |
| 391 if ( sizes == (SDL_Rect **)0 ) { | |
| 392 /* No sizes supported at this bit-depth */ | |
| 393 continue; | |
| 394 } else | |
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395 if (sizes == (SDL_Rect **)NEGATIVE_ONE) { |
| 0 | 396 /* Any size supported at this bit-depth */ |
| 397 supported = 1; | |
| 398 continue; | |
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399 } else if (current_video->handles_any_size) { |
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400 /* Driver can center a smaller surface to simulate fullscreen */ |
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401 for ( i=0; sizes[i]; ++i ) { |
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402 if ((sizes[i]->w >= width) && (sizes[i]->h >= height)) { |
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403 supported = 1; /* this mode can fit the centered window. */ |
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404 break; |
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405 } |
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406 } |
| 0 | 407 } else |
| 408 for ( i=0; sizes[i]; ++i ) { | |
| 409 if ((sizes[i]->w == width) && (sizes[i]->h == height)) { | |
| 410 supported = 1; | |
| 411 break; | |
| 412 } | |
| 413 } | |
| 414 } | |
| 415 if ( supported ) { | |
| 416 --b; | |
| 417 return(SDL_closest_depths[table][b]); | |
| 418 } else { | |
| 419 return(0); | |
| 420 } | |
| 421 } | |
| 422 | |
| 423 /* | |
| 424 * Get the closest non-emulated video mode to the one requested | |
| 425 */ | |
| 426 static int SDL_GetVideoMode (int *w, int *h, int *BitsPerPixel, Uint32 flags) | |
| 427 { | |
| 428 int table, b, i; | |
| 429 int supported; | |
| 430 int native_bpp; | |
| 431 SDL_PixelFormat format; | |
| 432 SDL_Rect **sizes; | |
| 433 | |
|
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434 /* Check parameters */ |
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435 if ( *BitsPerPixel < 8 || *BitsPerPixel > 32 ) { |
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436 SDL_SetError("Invalid bits per pixel (range is {8...32})"); |
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437 return(0); |
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438 } |
|
430
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439 if ((*w <= 0) || (*h <= 0)) { |
|
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440 SDL_SetError("Invalid width or height"); |
|
430
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441 return(0); |
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442 } |
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443 |
| 0 | 444 /* Try the original video mode, get the closest depth */ |
| 445 native_bpp = SDL_VideoModeOK(*w, *h, *BitsPerPixel, flags); | |
| 446 if ( native_bpp == *BitsPerPixel ) { | |
| 447 return(1); | |
| 448 } | |
| 449 if ( native_bpp > 0 ) { | |
| 450 *BitsPerPixel = native_bpp; | |
| 451 return(1); | |
| 452 } | |
| 453 | |
| 454 /* No exact size match at any depth, look for closest match */ | |
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455 SDL_memset(&format, 0, sizeof(format)); |
| 0 | 456 supported = 0; |
| 457 table = ((*BitsPerPixel+7)/8)-1; | |
| 458 SDL_closest_depths[table][0] = *BitsPerPixel; | |
| 459 SDL_closest_depths[table][7] = SDL_VideoSurface->format->BitsPerPixel; | |
| 460 for ( b = 0; !supported && SDL_closest_depths[table][b]; ++b ) { | |
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461 int best; |
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462 |
| 0 | 463 format.BitsPerPixel = SDL_closest_depths[table][b]; |
| 464 sizes = SDL_ListModes(&format, flags); | |
| 465 if ( sizes == (SDL_Rect **)0 ) { | |
| 466 /* No sizes supported at this bit-depth */ | |
| 467 continue; | |
| 468 } | |
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469 best=0; |
| 0 | 470 for ( i=0; sizes[i]; ++i ) { |
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471 /* Mode with both dimensions bigger or equal than asked ? */ |
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472 if ((sizes[i]->w >= *w) && (sizes[i]->h >= *h)) { |
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473 /* Mode with any dimension smaller or equal than current best ? */ |
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474 if ((sizes[i]->w <= sizes[best]->w) || (sizes[i]->h <= sizes[best]->h)) { |
|
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475 /* Now choose the mode that has less pixels */ |
|
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476 if ((sizes[i]->w * sizes[i]->h) <= (sizes[best]->w * sizes[best]->h)) { |
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477 best=i; |
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478 supported = 1; |
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479 } |
| 0 | 480 } |
| 481 } | |
| 482 } | |
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483 if (supported) { |
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484 *w=sizes[best]->w; |
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485 *h=sizes[best]->h; |
| 0 | 486 *BitsPerPixel = SDL_closest_depths[table][b]; |
| 487 } | |
| 488 } | |
| 489 if ( ! supported ) { | |
| 490 SDL_SetError("No video mode large enough for %dx%d", *w, *h); | |
| 491 } | |
| 492 return(supported); | |
| 493 } | |
| 494 | |
| 495 /* This should probably go somewhere else -- like SDL_surface.c */ | |
| 496 static void SDL_ClearSurface(SDL_Surface *surface) | |
| 497 { | |
| 498 Uint32 black; | |
| 499 | |
| 500 black = SDL_MapRGB(surface->format, 0, 0, 0); | |
| 501 SDL_FillRect(surface, NULL, black); | |
| 502 if ((surface->flags&SDL_HWSURFACE) && (surface->flags&SDL_DOUBLEBUF)) { | |
| 503 SDL_Flip(surface); | |
| 504 SDL_FillRect(surface, NULL, black); | |
| 505 } | |
|
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506 if (surface->flags&SDL_FULLSCREEN) { |
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507 SDL_Flip(surface); |
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508 } |
| 0 | 509 } |
| 510 | |
| 511 /* | |
| 512 * Create a shadow surface suitable for fooling the app. :-) | |
| 513 */ | |
| 514 static void SDL_CreateShadowSurface(int depth) | |
| 515 { | |
| 516 Uint32 Rmask, Gmask, Bmask; | |
| 517 | |
| 518 /* Allocate the shadow surface */ | |
| 519 if ( depth == (SDL_VideoSurface->format)->BitsPerPixel ) { | |
| 520 Rmask = (SDL_VideoSurface->format)->Rmask; | |
| 521 Gmask = (SDL_VideoSurface->format)->Gmask; | |
| 522 Bmask = (SDL_VideoSurface->format)->Bmask; | |
| 523 } else { | |
| 524 Rmask = Gmask = Bmask = 0; | |
| 525 } | |
| 526 SDL_ShadowSurface = SDL_CreateRGBSurface(SDL_SWSURFACE, | |
| 527 SDL_VideoSurface->w, SDL_VideoSurface->h, | |
| 528 depth, Rmask, Gmask, Bmask, 0); | |
| 529 if ( SDL_ShadowSurface == NULL ) { | |
| 530 return; | |
| 531 } | |
| 532 | |
| 533 /* 8-bit shadow surfaces report that they have exclusive palette */ | |
| 534 if ( SDL_ShadowSurface->format->palette ) { | |
| 535 SDL_ShadowSurface->flags |= SDL_HWPALETTE; | |
| 536 if ( depth == (SDL_VideoSurface->format)->BitsPerPixel ) { | |
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537 SDL_memcpy(SDL_ShadowSurface->format->palette->colors, |
| 0 | 538 SDL_VideoSurface->format->palette->colors, |
| 539 SDL_VideoSurface->format->palette->ncolors* | |
| 540 sizeof(SDL_Color)); | |
| 541 } else { | |
| 542 SDL_DitherColors( | |
| 543 SDL_ShadowSurface->format->palette->colors, depth); | |
| 544 } | |
| 545 } | |
| 546 | |
| 547 /* If the video surface is resizable, the shadow should say so */ | |
| 548 if ( (SDL_VideoSurface->flags & SDL_RESIZABLE) == SDL_RESIZABLE ) { | |
| 549 SDL_ShadowSurface->flags |= SDL_RESIZABLE; | |
| 550 } | |
| 551 /* If the video surface has no frame, the shadow should say so */ | |
| 552 if ( (SDL_VideoSurface->flags & SDL_NOFRAME) == SDL_NOFRAME ) { | |
| 553 SDL_ShadowSurface->flags |= SDL_NOFRAME; | |
| 554 } | |
| 555 /* If the video surface is fullscreen, the shadow should say so */ | |
| 556 if ( (SDL_VideoSurface->flags & SDL_FULLSCREEN) == SDL_FULLSCREEN ) { | |
| 557 SDL_ShadowSurface->flags |= SDL_FULLSCREEN; | |
| 558 } | |
| 559 /* If the video surface is flippable, the shadow should say so */ | |
| 560 if ( (SDL_VideoSurface->flags & SDL_DOUBLEBUF) == SDL_DOUBLEBUF ) { | |
| 561 SDL_ShadowSurface->flags |= SDL_DOUBLEBUF; | |
| 562 } | |
| 563 return; | |
| 564 } | |
| 565 | |
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566 #ifdef __QNXNTO__ |
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567 #include <sys/neutrino.h> |
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568 #endif /* __QNXNTO__ */ |
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569 |
| 0 | 570 /* |
| 571 * Set the requested video mode, allocating a shadow buffer if necessary. | |
| 572 */ | |
| 573 SDL_Surface * SDL_SetVideoMode (int width, int height, int bpp, Uint32 flags) | |
| 574 { | |
| 575 SDL_VideoDevice *video, *this; | |
| 576 SDL_Surface *prev_mode, *mode; | |
| 577 int video_w; | |
| 578 int video_h; | |
| 579 int video_bpp; | |
| 580 int is_opengl; | |
| 581 SDL_GrabMode saved_grab; | |
| 582 | |
| 583 /* Start up the video driver, if necessary.. | |
| 584 WARNING: This is the only function protected this way! | |
| 585 */ | |
| 586 if ( ! current_video ) { | |
| 587 if ( SDL_Init(SDL_INIT_VIDEO|SDL_INIT_NOPARACHUTE) < 0 ) { | |
| 588 return(NULL); | |
| 589 } | |
| 590 } | |
| 591 this = video = current_video; | |
| 592 | |
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593 /* Default to the current width and height */ |
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594 if ( width == 0 ) { |
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595 width = video->info.current_w; |
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596 } |
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597 if ( height == 0 ) { |
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598 height = video->info.current_h; |
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599 } |
| 0 | 600 /* Default to the current video bpp */ |
| 601 if ( bpp == 0 ) { | |
| 602 flags |= SDL_ANYFORMAT; | |
| 603 bpp = SDL_VideoSurface->format->BitsPerPixel; | |
| 604 } | |
| 605 | |
| 606 /* Get a good video mode, the closest one possible */ | |
| 607 video_w = width; | |
| 608 video_h = height; | |
| 609 video_bpp = bpp; | |
| 610 if ( ! SDL_GetVideoMode(&video_w, &video_h, &video_bpp, flags) ) { | |
| 611 return(NULL); | |
| 612 } | |
| 613 | |
| 614 /* Check the requested flags */ | |
| 615 /* There's no palette in > 8 bits-per-pixel mode */ | |
| 616 if ( video_bpp > 8 ) { | |
| 617 flags &= ~SDL_HWPALETTE; | |
| 618 } | |
| 619 #if 0 | |
| 620 if ( (flags&SDL_FULLSCREEN) != SDL_FULLSCREEN ) { | |
| 621 /* There's no windowed double-buffering */ | |
| 622 flags &= ~SDL_DOUBLEBUF; | |
| 623 } | |
| 624 #endif | |
| 625 if ( (flags&SDL_DOUBLEBUF) == SDL_DOUBLEBUF ) { | |
| 626 /* Use hardware surfaces when double-buffering */ | |
| 627 flags |= SDL_HWSURFACE; | |
| 628 } | |
| 629 | |
| 630 is_opengl = ( ( flags & SDL_OPENGL ) == SDL_OPENGL ); | |
| 631 if ( is_opengl ) { | |
| 632 /* These flags are for 2D video modes only */ | |
| 633 flags &= ~(SDL_HWSURFACE|SDL_DOUBLEBUF); | |
| 634 } | |
| 635 | |
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636 /* Reset the keyboard here so event callbacks can run */ |
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637 SDL_ResetKeyboard(); |
|
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638 SDL_ResetMouse(); |
| 1296 | 639 SDL_cursorstate &= ~CURSOR_USINGSW; |
|
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640 |
| 0 | 641 /* Clean up any previous video mode */ |
| 642 if ( SDL_PublicSurface != NULL ) { | |
| 643 SDL_PublicSurface = NULL; | |
| 644 } | |
| 645 if ( SDL_ShadowSurface != NULL ) { | |
| 646 SDL_Surface *ready_to_go; | |
| 647 ready_to_go = SDL_ShadowSurface; | |
| 648 SDL_ShadowSurface = NULL; | |
| 649 SDL_FreeSurface(ready_to_go); | |
| 650 } | |
| 651 if ( video->physpal ) { | |
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652 SDL_free(video->physpal->colors); |
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653 SDL_free(video->physpal); |
| 0 | 654 video->physpal = NULL; |
| 655 } | |
| 656 if( video->gammacols) { | |
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657 SDL_free(video->gammacols); |
| 0 | 658 video->gammacols = NULL; |
| 659 } | |
| 660 | |
| 661 /* Save the previous grab state and turn off grab for mode switch */ | |
| 662 saved_grab = SDL_WM_GrabInputOff(); | |
| 663 | |
| 664 /* Try to set the video mode, along with offset and clipping */ | |
| 665 prev_mode = SDL_VideoSurface; | |
| 666 SDL_LockCursor(); | |
| 667 SDL_VideoSurface = NULL; /* In case it's freed by driver */ | |
| 668 mode = video->SetVideoMode(this, prev_mode,video_w,video_h,video_bpp,flags); | |
| 669 if ( mode ) { /* Prevent resize events from mode change */ | |
| 1190 | 670 /* But not on OS/2 */ |
| 671 #ifndef __OS2__ | |
| 0 | 672 SDL_PrivateResize(mode->w, mode->h); |
| 1190 | 673 #endif |
|
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674 |
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675 /* Sam - If we asked for OpenGL mode, and didn't get it, fail */ |
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676 if ( is_opengl && !(mode->flags & SDL_OPENGL) ) { |
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677 mode = NULL; |
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678 SDL_SetError("OpenGL not available"); |
|
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679 } |
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680 } |
| 0 | 681 /* |
| 682 * rcg11292000 | |
| 683 * If you try to set an SDL_OPENGL surface, and fail to find a | |
| 684 * matching visual, then the next call to SDL_SetVideoMode() | |
| 685 * will segfault, since we no longer point to a dummy surface, | |
| 686 * but rather NULL. | |
| 687 * Sam 11/29/00 | |
| 688 * WARNING, we need to make sure that the previous mode hasn't | |
| 689 * already been freed by the video driver. What do we do in | |
| 690 * that case? Should we call SDL_VideoInit() again? | |
| 691 */ | |
| 692 SDL_VideoSurface = (mode != NULL) ? mode : prev_mode; | |
| 693 | |
| 694 if ( (mode != NULL) && (!is_opengl) ) { | |
| 695 /* Sanity check */ | |
| 696 if ( (mode->w < width) || (mode->h < height) ) { | |
| 697 SDL_SetError("Video mode smaller than requested"); | |
| 698 return(NULL); | |
| 699 } | |
| 700 | |
| 701 /* If we have a palettized surface, create a default palette */ | |
| 702 if ( mode->format->palette ) { | |
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703 SDL_PixelFormat *vf = mode->format; |
| 0 | 704 SDL_DitherColors(vf->palette->colors, vf->BitsPerPixel); |
| 705 video->SetColors(this, 0, vf->palette->ncolors, | |
| 706 vf->palette->colors); | |
| 707 } | |
| 708 | |
| 709 /* Clear the surface to black */ | |
| 710 video->offset_x = 0; | |
| 711 video->offset_y = 0; | |
| 712 mode->offset = 0; | |
| 713 SDL_SetClipRect(mode, NULL); | |
| 714 SDL_ClearSurface(mode); | |
| 715 | |
| 716 /* Now adjust the offsets to match the desired mode */ | |
| 717 video->offset_x = (mode->w-width)/2; | |
| 718 video->offset_y = (mode->h-height)/2; | |
| 719 mode->offset = video->offset_y*mode->pitch + | |
| 720 video->offset_x*mode->format->BytesPerPixel; | |
| 721 #ifdef DEBUG_VIDEO | |
| 722 fprintf(stderr, | |
| 723 "Requested mode: %dx%dx%d, obtained mode %dx%dx%d (offset %d)\n", | |
| 724 width, height, bpp, | |
| 725 mode->w, mode->h, mode->format->BitsPerPixel, mode->offset); | |
| 726 #endif | |
| 727 mode->w = width; | |
| 728 mode->h = height; | |
| 729 SDL_SetClipRect(mode, NULL); | |
| 730 } | |
| 731 SDL_ResetCursor(); | |
| 732 SDL_UnlockCursor(); | |
| 733 | |
| 734 /* If we failed setting a video mode, return NULL... (Uh Oh!) */ | |
| 735 if ( mode == NULL ) { | |
| 736 return(NULL); | |
| 737 } | |
| 738 | |
| 739 /* If there is no window manager, set the SDL_NOFRAME flag */ | |
| 740 if ( ! video->info.wm_available ) { | |
| 741 mode->flags |= SDL_NOFRAME; | |
| 742 } | |
| 743 | |
| 744 /* Reset the mouse cursor and grab for new video mode */ | |
| 745 SDL_SetCursor(NULL); | |
| 746 if ( video->UpdateMouse ) { | |
| 747 video->UpdateMouse(this); | |
| 748 } | |
| 749 SDL_WM_GrabInput(saved_grab); | |
| 750 SDL_GetRelativeMouseState(NULL, NULL); /* Clear first large delta */ | |
| 751 | |
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752 #if SDL_VIDEO_OPENGL |
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753 /* Load GL symbols (before MakeCurrent, where we need glGetString). */ |
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754 if ( flags & (SDL_OPENGL | SDL_OPENGLBLIT) ) { |
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755 |
|
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756 #if defined(__QNXNTO__) && (_NTO_VERSION < 630) |
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757 #define __SDL_NOGETPROCADDR__ |
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758 #elif defined(__MINT__) |
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759 #define __SDL_NOGETPROCADDR__ |
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760 #endif |
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761 #ifdef __SDL_NOGETPROCADDR__ |
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762 #define SDL_PROC(ret,func,params) video->func=func; |
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763 #else |
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764 #define SDL_PROC(ret,func,params) \ |
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765 do { \ |
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766 video->func = SDL_GL_GetProcAddress(#func); \ |
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767 if ( ! video->func ) { \ |
|
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768 SDL_SetError("Couldn't load GL function %s: %s\n", #func, SDL_GetError()); \ |
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769 return(NULL); \ |
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770 } \ |
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771 } while ( 0 ); |
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772 |
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773 #endif /* __SDL_NOGETPROCADDR__ */ |
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774 |
|
650
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775 #include "SDL_glfuncs.h" |
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776 #undef SDL_PROC |
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777 } |
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778 #endif /* SDL_VIDEO_OPENGL */ |
|
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779 |
| 0 | 780 /* If we're running OpenGL, make the context current */ |
| 781 if ( (video->screen->flags & SDL_OPENGL) && | |
| 782 video->GL_MakeCurrent ) { | |
| 783 if ( video->GL_MakeCurrent(this) < 0 ) { | |
| 784 return(NULL); | |
| 785 } | |
| 786 } | |
| 787 | |
| 788 /* Set up a fake SDL surface for OpenGL "blitting" */ | |
| 789 if ( (flags & SDL_OPENGLBLIT) == SDL_OPENGLBLIT ) { | |
| 790 /* Load GL functions for performing the texture updates */ | |
|
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791 #if SDL_VIDEO_OPENGL |
| 0 | 792 |
| 793 /* Create a software surface for blitting */ | |
| 794 #ifdef GL_VERSION_1_2 | |
| 795 /* If the implementation either supports the packed pixels | |
| 796 extension, or implements the core OpenGL 1.2 API, it will | |
| 797 support the GL_UNSIGNED_SHORT_5_6_5 texture format. | |
| 798 */ | |
| 799 if ( (bpp == 16) && | |
|
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800 (SDL_strstr((const char *)video->glGetString(GL_EXTENSIONS), "GL_EXT_packed_pixels") || |
|
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|
801 (SDL_atof((const char *)video->glGetString(GL_VERSION)) >= 1.2f)) |
|
282
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Fixed SDL_OPENGLBLIT with OpenGL API newer than 1.2
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|
802 ) { |
| 0 | 803 video->is_32bit = 0; |
| 804 SDL_VideoSurface = SDL_CreateRGBSurface( | |
| 805 flags, | |
| 806 width, | |
| 807 height, | |
| 808 16, | |
| 809 31 << 11, | |
| 810 63 << 5, | |
| 811 31, | |
| 812 0 | |
| 813 ); | |
| 814 } | |
| 815 else | |
| 816 #endif /* OpenGL 1.2 */ | |
| 817 { | |
| 818 video->is_32bit = 1; | |
| 819 SDL_VideoSurface = SDL_CreateRGBSurface( | |
| 820 flags, | |
| 821 width, | |
| 822 height, | |
| 823 32, | |
| 824 #if SDL_BYTEORDER == SDL_LIL_ENDIAN | |
| 825 0x000000FF, | |
| 826 0x0000FF00, | |
| 827 0x00FF0000, | |
| 828 0xFF000000 | |
| 829 #else | |
| 830 0xFF000000, | |
| 831 0x00FF0000, | |
| 832 0x0000FF00, | |
| 833 0x000000FF | |
| 834 #endif | |
| 835 ); | |
| 836 } | |
| 837 if ( ! SDL_VideoSurface ) { | |
| 838 return(NULL); | |
| 839 } | |
| 840 SDL_VideoSurface->flags = mode->flags | SDL_OPENGLBLIT; | |
| 841 | |
| 842 /* Free the original video mode surface (is this safe?) */ | |
| 843 SDL_FreeSurface(mode); | |
| 844 | |
|
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|
845 /* Set the surface completely opaque & white by default */ |
|
1336
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Use SDL_ prefixed versions of C library functions.
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|
846 SDL_memset( SDL_VideoSurface->pixels, 255, SDL_VideoSurface->h * SDL_VideoSurface->pitch ); |
| 0 | 847 video->glGenTextures( 1, &video->texture ); |
| 848 video->glBindTexture( GL_TEXTURE_2D, video->texture ); | |
| 849 video->glTexImage2D( | |
| 850 GL_TEXTURE_2D, | |
| 851 0, | |
| 852 video->is_32bit ? GL_RGBA : GL_RGB, | |
| 853 256, | |
| 854 256, | |
| 855 0, | |
| 856 video->is_32bit ? GL_RGBA : GL_RGB, | |
| 857 #ifdef GL_VERSION_1_2 | |
| 858 video->is_32bit ? GL_UNSIGNED_BYTE : GL_UNSIGNED_SHORT_5_6_5, | |
| 859 #else | |
| 860 GL_UNSIGNED_BYTE, | |
| 861 #endif | |
| 862 NULL); | |
| 863 | |
| 864 video->UpdateRects = SDL_GL_UpdateRectsLock; | |
| 865 #else | |
|
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New configure-based build system. Still work in progress, but much improved
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|
866 SDL_SetError("Somebody forgot to #define SDL_VIDEO_OPENGL"); |
| 0 | 867 return(NULL); |
| 868 #endif | |
| 869 } | |
| 870 | |
| 871 /* Create a shadow surface if necessary */ | |
| 872 /* There are three conditions under which we create a shadow surface: | |
| 873 1. We need a particular bits-per-pixel that we didn't get. | |
| 874 2. We need a hardware palette and didn't get one. | |
| 875 3. We need a software surface and got a hardware surface. | |
| 876 */ | |
| 877 if ( !(SDL_VideoSurface->flags & SDL_OPENGL) && | |
| 878 ( | |
| 879 ( !(flags&SDL_ANYFORMAT) && | |
| 880 (SDL_VideoSurface->format->BitsPerPixel != bpp)) || | |
| 881 ( (flags&SDL_HWPALETTE) && | |
| 882 !(SDL_VideoSurface->flags&SDL_HWPALETTE)) || | |
| 883 /* If the surface is in hardware, video writes are visible | |
| 884 as soon as they are performed, so we need to buffer them | |
| 885 */ | |
| 886 ( ((flags&SDL_HWSURFACE) == SDL_SWSURFACE) && | |
|
580
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diff
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|
887 (SDL_VideoSurface->flags&SDL_HWSURFACE)) || |
|
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888 ( (flags&SDL_DOUBLEBUF) && |
|
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|
889 (SDL_VideoSurface->flags&SDL_HWSURFACE) && |
|
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890 !(SDL_VideoSurface->flags&SDL_DOUBLEBUF)) |
| 0 | 891 ) ) { |
| 892 SDL_CreateShadowSurface(bpp); | |
| 893 if ( SDL_ShadowSurface == NULL ) { | |
| 894 SDL_SetError("Couldn't create shadow surface"); | |
| 895 return(NULL); | |
| 896 } | |
| 897 SDL_PublicSurface = SDL_ShadowSurface; | |
| 898 } else { | |
| 899 SDL_PublicSurface = SDL_VideoSurface; | |
| 900 } | |
| 901 video->info.vfmt = SDL_VideoSurface->format; | |
|
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Added current_w and current_h to the SDL_VideoInfo structure, which is set to the desktop resolution during video intialization, and then set to the current resolution when a video mode is set.
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902 video->info.current_w = SDL_VideoSurface->w; |
|
8d9bb0cf2c2a
Added current_w and current_h to the SDL_VideoInfo structure, which is set to the desktop resolution during video intialization, and then set to the current resolution when a video mode is set.
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|
903 video->info.current_h = SDL_VideoSurface->h; |
| 0 | 904 |
| 905 /* We're done! */ | |
| 906 return(SDL_PublicSurface); | |
| 907 } | |
| 908 | |
| 909 /* | |
| 910 * Convert a surface into the video pixel format. | |
| 911 */ | |
| 912 SDL_Surface * SDL_DisplayFormat (SDL_Surface *surface) | |
| 913 { | |
| 914 Uint32 flags; | |
| 915 | |
| 916 if ( ! SDL_PublicSurface ) { | |
| 917 SDL_SetError("No video mode has been set"); | |
| 918 return(NULL); | |
| 919 } | |
| 920 /* Set the flags appropriate for copying to display surface */ | |
|
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*** empty log message ***
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diff
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|
921 if (((SDL_PublicSurface->flags&SDL_HWSURFACE) == SDL_HWSURFACE) && current_video->info.blit_hw) |
|
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922 flags = SDL_HWSURFACE; |
|
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923 else |
|
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|
924 flags = SDL_SWSURFACE; |
| 0 | 925 #ifdef AUTORLE_DISPLAYFORMAT |
| 926 flags |= (surface->flags & (SDL_SRCCOLORKEY|SDL_SRCALPHA)); | |
| 927 flags |= SDL_RLEACCELOK; | |
| 928 #else | |
| 929 flags |= surface->flags & (SDL_SRCCOLORKEY|SDL_SRCALPHA|SDL_RLEACCELOK); | |
| 930 #endif | |
| 931 return(SDL_ConvertSurface(surface, SDL_PublicSurface->format, flags)); | |
| 932 } | |
| 933 | |
| 934 /* | |
| 935 * Convert a surface into a format that's suitable for blitting to | |
| 936 * the screen, but including an alpha channel. | |
| 937 */ | |
| 938 SDL_Surface *SDL_DisplayFormatAlpha(SDL_Surface *surface) | |
| 939 { | |
| 940 SDL_PixelFormat *vf; | |
| 941 SDL_PixelFormat *format; | |
| 942 SDL_Surface *converted; | |
| 943 Uint32 flags; | |
| 944 /* default to ARGB8888 */ | |
| 945 Uint32 amask = 0xff000000; | |
| 946 Uint32 rmask = 0x00ff0000; | |
| 947 Uint32 gmask = 0x0000ff00; | |
| 948 Uint32 bmask = 0x000000ff; | |
| 949 | |
| 950 if ( ! SDL_PublicSurface ) { | |
| 951 SDL_SetError("No video mode has been set"); | |
| 952 return(NULL); | |
| 953 } | |
| 954 vf = SDL_PublicSurface->format; | |
| 955 | |
| 956 switch(vf->BytesPerPixel) { | |
| 957 case 2: | |
| 958 /* For XGY5[56]5, use, AXGY8888, where {X, Y} = {R, B}. | |
| 959 For anything else (like ARGB4444) it doesn't matter | |
| 960 since we have no special code for it anyway */ | |
| 961 if ( (vf->Rmask == 0x1f) && | |
| 962 (vf->Bmask == 0xf800 || vf->Bmask == 0x7c00)) { | |
| 963 rmask = 0xff; | |
| 964 bmask = 0xff0000; | |
| 965 } | |
| 966 break; | |
| 967 | |
| 968 case 3: | |
| 969 case 4: | |
| 970 /* Keep the video format, as long as the high 8 bits are | |
| 971 unused or alpha */ | |
| 972 if ( (vf->Rmask == 0xff) && (vf->Bmask == 0xff0000) ) { | |
| 973 rmask = 0xff; | |
| 974 bmask = 0xff0000; | |
| 975 } | |
| 976 break; | |
| 977 | |
| 978 default: | |
| 979 /* We have no other optimised formats right now. When/if a new | |
| 980 optimised alpha format is written, add the converter here */ | |
| 981 break; | |
| 982 } | |
| 983 format = SDL_AllocFormat(32, rmask, gmask, bmask, amask); | |
| 984 flags = SDL_PublicSurface->flags & SDL_HWSURFACE; | |
| 985 flags |= surface->flags & (SDL_SRCALPHA | SDL_RLEACCELOK); | |
| 986 converted = SDL_ConvertSurface(surface, format, flags); | |
| 987 SDL_FreeFormat(format); | |
| 988 return(converted); | |
| 989 } | |
| 990 | |
| 991 /* | |
| 992 * Update a specific portion of the physical screen | |
| 993 */ | |
| 994 void SDL_UpdateRect(SDL_Surface *screen, Sint32 x, Sint32 y, Uint32 w, Uint32 h) | |
| 995 { | |
| 996 if ( screen ) { | |
| 997 SDL_Rect rect; | |
| 998 | |
| 999 /* Perform some checking */ | |
| 1000 if ( w == 0 ) | |
| 1001 w = screen->w; | |
| 1002 if ( h == 0 ) | |
| 1003 h = screen->h; | |
| 1004 if ( (int)(x+w) > screen->w ) | |
| 1005 return; | |
| 1006 if ( (int)(y+h) > screen->h ) | |
| 1007 return; | |
| 1008 | |
| 1009 /* Fill the rectangle */ | |
|
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|
1010 rect.x = (Sint16)x; |
|
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1011 rect.y = (Sint16)y; |
|
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1012 rect.w = (Uint16)w; |
|
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|
1013 rect.h = (Uint16)h; |
| 0 | 1014 SDL_UpdateRects(screen, 1, &rect); |
| 1015 } | |
| 1016 } | |
| 1017 void SDL_UpdateRects (SDL_Surface *screen, int numrects, SDL_Rect *rects) | |
| 1018 { | |
| 1019 int i; | |
| 1020 SDL_VideoDevice *video = current_video; | |
| 1021 SDL_VideoDevice *this = current_video; | |
| 1022 | |
|
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1023 if ( (screen->flags & (SDL_OPENGL | SDL_OPENGLBLIT)) == SDL_OPENGL ) { |
|
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1024 SDL_SetError("OpenGL active, use SDL_GL_SwapBuffers()"); |
|
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|
1025 return; |
|
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|
1026 } |
| 0 | 1027 if ( screen == SDL_ShadowSurface ) { |
| 1028 /* Blit the shadow surface using saved mapping */ | |
|
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|
1029 SDL_Palette *pal = screen->format->palette; |
| 0 | 1030 SDL_Color *saved_colors = NULL; |
|
488
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|
1031 if ( pal && !(SDL_VideoSurface->flags & SDL_HWPALETTE) ) { |
| 0 | 1032 /* simulated 8bpp, use correct physical palette */ |
| 1033 saved_colors = pal->colors; | |
| 1034 if ( video->gammacols ) { | |
| 1035 /* gamma-corrected palette */ | |
| 1036 pal->colors = video->gammacols; | |
| 1037 } else if ( video->physpal ) { | |
| 1038 /* physical palette different from logical */ | |
| 1039 pal->colors = video->physpal->colors; | |
| 1040 } | |
| 1041 } | |
| 1042 if ( SHOULD_DRAWCURSOR(SDL_cursorstate) ) { | |
| 1043 SDL_LockCursor(); | |
| 1044 SDL_DrawCursor(SDL_ShadowSurface); | |
| 1045 for ( i=0; i<numrects; ++i ) { | |
| 1046 SDL_LowerBlit(SDL_ShadowSurface, &rects[i], | |
| 1047 SDL_VideoSurface, &rects[i]); | |
| 1048 } | |
| 1049 SDL_EraseCursor(SDL_ShadowSurface); | |
| 1050 SDL_UnlockCursor(); | |
| 1051 } else { | |
| 1052 for ( i=0; i<numrects; ++i ) { | |
| 1053 SDL_LowerBlit(SDL_ShadowSurface, &rects[i], | |
| 1054 SDL_VideoSurface, &rects[i]); | |
| 1055 } | |
| 1056 } | |
|
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|
1057 if ( saved_colors ) { |
| 0 | 1058 pal->colors = saved_colors; |
|
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|
1059 } |
| 0 | 1060 |
| 1061 /* Fall through to video surface update */ | |
| 1062 screen = SDL_VideoSurface; | |
| 1063 } | |
| 1064 if ( screen == SDL_VideoSurface ) { | |
| 1065 /* Update the video surface */ | |
| 1066 if ( screen->offset ) { | |
| 1067 for ( i=0; i<numrects; ++i ) { | |
| 1068 rects[i].x += video->offset_x; | |
| 1069 rects[i].y += video->offset_y; | |
| 1070 } | |
| 1071 video->UpdateRects(this, numrects, rects); | |
| 1072 for ( i=0; i<numrects; ++i ) { | |
| 1073 rects[i].x -= video->offset_x; | |
| 1074 rects[i].y -= video->offset_y; | |
| 1075 } | |
| 1076 } else { | |
| 1077 video->UpdateRects(this, numrects, rects); | |
| 1078 } | |
| 1079 } | |
| 1080 } | |
| 1081 | |
| 1082 /* | |
| 1083 * Performs hardware double buffering, if possible, or a full update if not. | |
| 1084 */ | |
| 1085 int SDL_Flip(SDL_Surface *screen) | |
| 1086 { | |
| 1087 SDL_VideoDevice *video = current_video; | |
| 1088 /* Copy the shadow surface to the video surface */ | |
| 1089 if ( screen == SDL_ShadowSurface ) { | |
| 1090 SDL_Rect rect; | |
|
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diff
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|
1091 SDL_Palette *pal = screen->format->palette; |
| 0 | 1092 SDL_Color *saved_colors = NULL; |
|
488
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changeset
|
1093 if ( pal && !(SDL_VideoSurface->flags & SDL_HWPALETTE) ) { |
| 0 | 1094 /* simulated 8bpp, use correct physical palette */ |
| 1095 saved_colors = pal->colors; | |
| 1096 if ( video->gammacols ) { | |
| 1097 /* gamma-corrected palette */ | |
| 1098 pal->colors = video->gammacols; | |
| 1099 } else if ( video->physpal ) { | |
| 1100 /* physical palette different from logical */ | |
| 1101 pal->colors = video->physpal->colors; | |
| 1102 } | |
| 1103 } | |
| 1104 | |
| 1105 rect.x = 0; | |
| 1106 rect.y = 0; | |
| 1107 rect.w = screen->w; | |
| 1108 rect.h = screen->h; | |
|
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|
1109 if ( SHOULD_DRAWCURSOR(SDL_cursorstate) ) { |
|
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|
1110 SDL_LockCursor(); |
|
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|
1111 SDL_DrawCursor(SDL_ShadowSurface); |
|
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|
1112 SDL_LowerBlit(SDL_ShadowSurface, &rect, |
|
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1113 SDL_VideoSurface, &rect); |
|
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|
1114 SDL_EraseCursor(SDL_ShadowSurface); |
|
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1115 SDL_UnlockCursor(); |
|
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1116 } else { |
|
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|
1117 SDL_LowerBlit(SDL_ShadowSurface, &rect, |
|
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|
1118 SDL_VideoSurface, &rect); |
|
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1119 } |
|
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1120 if ( saved_colors ) { |
|
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1121 pal->colors = saved_colors; |
|
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1122 } |
| 0 | 1123 |
|
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1124 /* Fall through to video surface update */ |
| 0 | 1125 screen = SDL_VideoSurface; |
| 1126 } | |
| 1127 if ( (screen->flags & SDL_DOUBLEBUF) == SDL_DOUBLEBUF ) { | |
| 1128 SDL_VideoDevice *this = current_video; | |
| 1129 return(video->FlipHWSurface(this, SDL_VideoSurface)); | |
| 1130 } else { | |
| 1131 SDL_UpdateRect(screen, 0, 0, 0, 0); | |
| 1132 } | |
| 1133 return(0); | |
| 1134 } | |
| 1135 | |
| 1136 static void SetPalette_logical(SDL_Surface *screen, SDL_Color *colors, | |
| 1137 int firstcolor, int ncolors) | |
| 1138 { | |
|
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|
1139 SDL_Palette *pal = screen->format->palette; |
| 0 | 1140 SDL_Palette *vidpal; |
| 1141 | |
| 1142 if ( colors != (pal->colors + firstcolor) ) { | |
|
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1143 SDL_memcpy(pal->colors + firstcolor, colors, |
| 0 | 1144 ncolors * sizeof(*colors)); |
| 1145 } | |
| 1146 | |
| 3995 | 1147 if ( current_video && SDL_VideoSurface ) { |
| 1148 vidpal = SDL_VideoSurface->format->palette; | |
| 1149 if ( (screen == SDL_ShadowSurface) && vidpal ) { | |
| 1150 /* | |
| 1151 * This is a shadow surface, and the physical | |
| 1152 * framebuffer is also indexed. Propagate the | |
| 1153 * changes to its logical palette so that | |
| 1154 * updates are always identity blits | |
| 1155 */ | |
| 1156 SDL_memcpy(vidpal->colors + firstcolor, colors, | |
| 1157 ncolors * sizeof(*colors)); | |
| 1158 } | |
| 0 | 1159 } |
| 1160 SDL_FormatChanged(screen); | |
| 1161 } | |
| 1162 | |
| 1163 static int SetPalette_physical(SDL_Surface *screen, | |
| 1164 SDL_Color *colors, int firstcolor, int ncolors) | |
| 1165 { | |
| 1166 SDL_VideoDevice *video = current_video; | |
| 1167 int gotall = 1; | |
| 1168 | |
| 1169 if ( video->physpal ) { | |
| 1170 /* We need to copy the new colors, since we haven't | |
| 1171 * already done the copy in the logical set above. | |
| 1172 */ | |
|
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parents:
1330
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|
1173 SDL_memcpy(video->physpal->colors + firstcolor, |
| 0 | 1174 colors, ncolors * sizeof(*colors)); |
| 1175 } | |
| 1176 if ( screen == SDL_ShadowSurface ) { | |
| 1177 if ( SDL_VideoSurface->flags & SDL_HWPALETTE ) { | |
| 1178 /* | |
| 1179 * The real screen is also indexed - set its physical | |
| 1180 * palette. The physical palette does not include the | |
| 1181 * gamma modification, we apply it directly instead, | |
| 1182 * but this only happens if we have hardware palette. | |
| 1183 */ | |
| 1184 screen = SDL_VideoSurface; | |
| 1185 } else { | |
| 1186 /* | |
| 1187 * The video surface is not indexed - invalidate any | |
| 1188 * active shadow-to-video blit mappings. | |
| 1189 */ | |
| 1190 if ( screen->map->dst == SDL_VideoSurface ) { | |
| 1191 SDL_InvalidateMap(screen->map); | |
| 1192 } | |
| 1193 if ( video->gamma ) { | |
| 1194 if( ! video->gammacols ) { | |
| 1195 SDL_Palette *pp = video->physpal; | |
| 1196 if(!pp) | |
| 1197 pp = screen->format->palette; | |
|
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|
1198 video->gammacols = SDL_malloc(pp->ncolors |
| 0 | 1199 * sizeof(SDL_Color)); |
| 1200 SDL_ApplyGamma(video->gamma, | |
| 1201 pp->colors, | |
| 1202 video->gammacols, | |
| 1203 pp->ncolors); | |
| 1204 } else { | |
| 1205 SDL_ApplyGamma(video->gamma, colors, | |
| 1206 video->gammacols | |
| 1207 + firstcolor, | |
| 1208 ncolors); | |
| 1209 } | |
| 1210 } | |
| 1211 SDL_UpdateRect(screen, 0, 0, 0, 0); | |
| 1212 } | |
| 1213 } | |
| 1214 | |
| 1215 if ( screen == SDL_VideoSurface ) { | |
| 1216 SDL_Color gcolors[256]; | |
| 1217 | |
|
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Date: Sun, 27 Jul 2003 22:37:59 +0200
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|
1218 if ( video->gamma ) { |
|
66c02f83f5bf
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Sam Lantinga <slouken@libsdl.org>
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656
diff
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|
1219 SDL_ApplyGamma(video->gamma, colors, gcolors, ncolors); |
| 0 | 1220 colors = gcolors; |
| 1221 } | |
| 1222 gotall = video->SetColors(video, firstcolor, ncolors, colors); | |
| 1223 if ( ! gotall ) { | |
| 1224 /* The video flags shouldn't have SDL_HWPALETTE, and | |
| 1225 the video driver is responsible for copying back the | |
| 1226 correct colors into the video surface palette. | |
| 1227 */ | |
| 1228 ; | |
| 1229 } | |
| 1230 SDL_CursorPaletteChanged(); | |
| 1231 } | |
| 1232 return gotall; | |
| 1233 } | |
| 1234 | |
| 1235 /* | |
| 1236 * Set the physical and/or logical colormap of a surface: | |
| 1237 * Only the screen has a physical colormap. It determines what is actually | |
| 1238 * sent to the display. | |
| 1239 * The logical colormap is used to map blits to/from the surface. | |
| 1240 * 'which' is one or both of SDL_LOGPAL, SDL_PHYSPAL | |
| 1241 * | |
| 1242 * Return nonzero if all colours were set as requested, or 0 otherwise. | |
| 1243 */ | |
| 1244 int SDL_SetPalette(SDL_Surface *screen, int which, | |
| 1245 SDL_Color *colors, int firstcolor, int ncolors) | |
| 1246 { | |
|
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656
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|
1247 SDL_Palette *pal; |
| 0 | 1248 int gotall; |
| 1249 int palsize; | |
| 1250 | |
| 3995 | 1251 if ( !screen ) { |
| 34 | 1252 return 0; |
| 1253 } | |
| 3995 | 1254 if ( !current_video || screen != SDL_PublicSurface ) { |
|
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656
diff
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|
1255 /* only screens have physical palettes */ |
|
66c02f83f5bf
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parents:
656
diff
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|
1256 which &= ~SDL_PHYSPAL; |
| 3995 | 1257 } else if ( (screen->flags & SDL_HWPALETTE) != SDL_HWPALETTE ) { |
|
662
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parents:
656
diff
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|
1258 /* hardware palettes required for split colormaps */ |
|
66c02f83f5bf
Date: Sun, 27 Jul 2003 22:37:59 +0200
Sam Lantinga <slouken@libsdl.org>
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|
1259 which |= SDL_PHYSPAL | SDL_LOGPAL; |
| 0 | 1260 } |
| 1261 | |
| 1262 /* Verify the parameters */ | |
| 1263 pal = screen->format->palette; | |
| 1264 if( !pal ) { | |
|
662
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Date: Sun, 27 Jul 2003 22:37:59 +0200
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|
1265 return 0; /* not a palettized surface */ |
| 0 | 1266 } |
| 1267 gotall = 1; | |
| 1268 palsize = 1 << screen->format->BitsPerPixel; | |
| 1269 if ( ncolors > (palsize - firstcolor) ) { | |
|
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|
1270 ncolors = (palsize - firstcolor); |
| 0 | 1271 gotall = 0; |
| 1272 } | |
| 1273 | |
| 1274 if ( which & SDL_LOGPAL ) { | |
| 1275 /* | |
| 1276 * Logical palette change: The actual screen isn't affected, | |
| 1277 * but the internal colormap is altered so that the | |
| 1278 * interpretation of the pixel values (for blits etc) is | |
| 1279 * changed. | |
| 1280 */ | |
|
662
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Date: Sun, 27 Jul 2003 22:37:59 +0200
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656
diff
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|
1281 SetPalette_logical(screen, colors, firstcolor, ncolors); |
| 0 | 1282 } |
| 1283 if ( which & SDL_PHYSPAL ) { | |
| 1284 SDL_VideoDevice *video = current_video; | |
|
662
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Sam Lantinga <slouken@libsdl.org>
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656
diff
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|
1285 /* |
| 0 | 1286 * Physical palette change: This doesn't affect the |
| 1287 * program's idea of what the screen looks like, but changes | |
| 1288 * its actual appearance. | |
| 1289 */ | |
| 3995 | 1290 if ( !video->physpal && !(which & SDL_LOGPAL) ) { |
| 0 | 1291 /* Lazy physical palette allocation */ |
|
662
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656
diff
changeset
|
1292 int size; |
|
1336
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Sam Lantinga <slouken@libsdl.org>
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1330
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|
1293 SDL_Palette *pp = SDL_malloc(sizeof(*pp)); |
|
944
cdea7cbc3e23
Date: Wed, 28 Jul 2004 14:56:57 +0800
Sam Lantinga <slouken@libsdl.org>
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diff
changeset
|
1294 if ( !pp ) { |
|
cdea7cbc3e23
Date: Wed, 28 Jul 2004 14:56:57 +0800
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|
1295 return 0; |
|
cdea7cbc3e23
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Sam Lantinga <slouken@libsdl.org>
parents:
916
diff
changeset
|
1296 } |
| 3995 | 1297 video->physpal = pp; |
| 0 | 1298 pp->ncolors = pal->ncolors; |
| 1299 size = pp->ncolors * sizeof(SDL_Color); | |
|
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Sam Lantinga <slouken@libsdl.org>
parents:
1330
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|
1300 pp->colors = SDL_malloc(size); |
|
944
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Date: Wed, 28 Jul 2004 14:56:57 +0800
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diff
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|
1301 if ( !pp->colors ) { |
|
cdea7cbc3e23
Date: Wed, 28 Jul 2004 14:56:57 +0800
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parents:
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diff
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|
1302 return 0; |
|
cdea7cbc3e23
Date: Wed, 28 Jul 2004 14:56:57 +0800
Sam Lantinga <slouken@libsdl.org>
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diff
changeset
|
1303 } |
|
1336
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Use SDL_ prefixed versions of C library functions.
Sam Lantinga <slouken@libsdl.org>
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1330
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|
1304 SDL_memcpy(pp->colors, pal->colors, size); |
| 0 | 1305 } |
| 1306 if ( ! SetPalette_physical(screen, | |
| 1307 colors, firstcolor, ncolors) ) { | |
| 1308 gotall = 0; | |
| 1309 } | |
| 1310 } | |
| 1311 return gotall; | |
| 1312 } | |
| 1313 | |
| 1314 int SDL_SetColors(SDL_Surface *screen, SDL_Color *colors, int firstcolor, | |
| 1315 int ncolors) | |
| 1316 { | |
|
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Date: Sun, 27 Jul 2003 22:37:59 +0200
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|
1317 return SDL_SetPalette(screen, SDL_LOGPAL | SDL_PHYSPAL, |
| 0 | 1318 colors, firstcolor, ncolors); |
| 1319 } | |
| 1320 | |
| 1321 /* | |
| 1322 * Clean up the video subsystem | |
| 1323 */ | |
| 1324 void SDL_VideoQuit (void) | |
| 1325 { | |
| 1326 SDL_Surface *ready_to_go; | |
| 1327 | |
| 1328 if ( current_video ) { | |
| 1329 SDL_VideoDevice *video = current_video; | |
| 1330 SDL_VideoDevice *this = current_video; | |
| 1331 | |
| 1332 /* Halt event processing before doing anything else */ | |
| 1333 SDL_StopEventLoop(); | |
| 1334 | |
| 1335 /* Clean up allocated window manager items */ | |
| 1336 if ( SDL_PublicSurface ) { | |
| 1337 SDL_PublicSurface = NULL; | |
| 1338 } | |
| 1339 SDL_CursorQuit(); | |
| 1340 | |
| 1341 /* Just in case... */ | |
| 1342 SDL_WM_GrabInputOff(); | |
| 1343 | |
| 1344 /* Clean up the system video */ | |
| 1345 video->VideoQuit(this); | |
| 1346 | |
| 1347 /* Free any lingering surfaces */ | |
| 1348 ready_to_go = SDL_ShadowSurface; | |
| 1349 SDL_ShadowSurface = NULL; | |
| 1350 SDL_FreeSurface(ready_to_go); | |
| 1351 if ( SDL_VideoSurface != NULL ) { | |
| 1352 ready_to_go = SDL_VideoSurface; | |
| 1353 SDL_VideoSurface = NULL; | |
| 1354 SDL_FreeSurface(ready_to_go); | |
| 1355 } | |
| 1356 SDL_PublicSurface = NULL; | |
| 1357 | |
| 1358 /* Clean up miscellaneous memory */ | |
| 1359 if ( video->physpal ) { | |
|
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Sam Lantinga <slouken@libsdl.org>
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|
1360 SDL_free(video->physpal->colors); |
|
3692456e7b0f
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Sam Lantinga <slouken@libsdl.org>
parents:
1330
diff
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|
1361 SDL_free(video->physpal); |
| 0 | 1362 video->physpal = NULL; |
| 1363 } | |
| 1364 if ( video->gammacols ) { | |
|
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Sam Lantinga <slouken@libsdl.org>
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|
1365 SDL_free(video->gammacols); |
| 0 | 1366 video->gammacols = NULL; |
| 1367 } | |
| 1368 if ( video->gamma ) { | |
|
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Sam Lantinga <slouken@libsdl.org>
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diff
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|
1369 SDL_free(video->gamma); |
| 0 | 1370 video->gamma = NULL; |
| 1371 } | |
|
58
bd6b0a910a65
* Removed fullscreen menu option from the "Window" menu
Sam Lantinga <slouken@lokigames.com>
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47
diff
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|
1372 if ( video->wm_title != NULL ) { |
|
1336
3692456e7b0f
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Sam Lantinga <slouken@libsdl.org>
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diff
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|
1373 SDL_free(video->wm_title); |
|
58
bd6b0a910a65
* Removed fullscreen menu option from the "Window" menu
Sam Lantinga <slouken@lokigames.com>
parents:
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diff
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|
1374 video->wm_title = NULL; |
| 0 | 1375 } |
|
58
bd6b0a910a65
* Removed fullscreen menu option from the "Window" menu
Sam Lantinga <slouken@lokigames.com>
parents:
47
diff
changeset
|
1376 if ( video->wm_icon != NULL ) { |
|
1336
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Sam Lantinga <slouken@libsdl.org>
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|
1377 SDL_free(video->wm_icon); |
|
58
bd6b0a910a65
* Removed fullscreen menu option from the "Window" menu
Sam Lantinga <slouken@lokigames.com>
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47
diff
changeset
|
1378 video->wm_icon = NULL; |
| 0 | 1379 } |
| 1380 | |
| 1381 /* Finish cleaning up video subsystem */ | |
| 1382 video->free(this); | |
| 1383 current_video = NULL; | |
| 1384 } | |
| 1385 return; | |
| 1386 } | |
| 1387 | |
| 1388 /* Load the GL driver library */ | |
| 1389 int SDL_GL_LoadLibrary(const char *path) | |
| 1390 { | |
| 1391 SDL_VideoDevice *video = current_video; | |
| 1392 SDL_VideoDevice *this = current_video; | |
| 1393 int retval; | |
| 1394 | |
| 1395 retval = -1; | |
|
423
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More correct error reported when calling SDL_GL_LoadLibrary() without
Ryan C. Gordon <icculus@icculus.org>
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|
1396 if ( video == NULL ) { |
|
d1565c52ded5
More correct error reported when calling SDL_GL_LoadLibrary() without
Ryan C. Gordon <icculus@icculus.org>
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diff
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|
1397 SDL_SetError("Video subsystem has not been initialized"); |
| 0 | 1398 } else { |
|
423
d1565c52ded5
More correct error reported when calling SDL_GL_LoadLibrary() without
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diff
changeset
|
1399 if ( video->GL_LoadLibrary ) { |
|
d1565c52ded5
More correct error reported when calling SDL_GL_LoadLibrary() without
Ryan C. Gordon <icculus@icculus.org>
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diff
changeset
|
1400 retval = video->GL_LoadLibrary(this, path); |
|
d1565c52ded5
More correct error reported when calling SDL_GL_LoadLibrary() without
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diff
changeset
|
1401 } else { |
|
d1565c52ded5
More correct error reported when calling SDL_GL_LoadLibrary() without
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|
1402 SDL_SetError("No dynamic GL support in video driver"); |
|
d1565c52ded5
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|
1403 } |
| 0 | 1404 } |
| 1405 return(retval); | |
| 1406 } | |
| 1407 | |
| 1408 void *SDL_GL_GetProcAddress(const char* proc) | |
| 1409 { | |
| 1410 SDL_VideoDevice *video = current_video; | |
| 1411 SDL_VideoDevice *this = current_video; | |
| 1412 void *func; | |
| 1413 | |
| 1414 func = NULL; | |
| 1415 if ( video->GL_GetProcAddress ) { | |
| 1416 if ( video->gl_config.driver_loaded ) { | |
| 1417 func = video->GL_GetProcAddress(this, proc); | |
| 1418 } else { | |
| 1419 SDL_SetError("No GL driver has been loaded"); | |
| 1420 } | |
| 1421 } else { | |
| 1422 SDL_SetError("No dynamic GL support in video driver"); | |
| 1423 } | |
| 1424 return func; | |
| 1425 } | |
| 1426 | |
| 1427 /* Set the specified GL attribute for setting up a GL video mode */ | |
| 1428 int SDL_GL_SetAttribute( SDL_GLattr attr, int value ) | |
| 1429 { | |
| 1430 int retval; | |
| 1431 SDL_VideoDevice *video = current_video; | |
| 1432 | |
| 1433 retval = 0; | |
| 1434 switch (attr) { | |
| 1435 case SDL_GL_RED_SIZE: | |
| 1436 video->gl_config.red_size = value; | |
| 1437 break; | |
| 1438 case SDL_GL_GREEN_SIZE: | |
| 1439 video->gl_config.green_size = value; | |
| 1440 break; | |
| 1441 case SDL_GL_BLUE_SIZE: | |
| 1442 video->gl_config.blue_size = value; | |
| 1443 break; | |
| 1444 case SDL_GL_ALPHA_SIZE: | |
| 1445 video->gl_config.alpha_size = value; | |
| 1446 break; | |
| 1447 case SDL_GL_DOUBLEBUFFER: | |
| 1448 video->gl_config.double_buffer = value; | |
| 1449 break; | |
|
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Date: Sun, 27 Jul 2003 22:37:59 +0200
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|
1450 case SDL_GL_BUFFER_SIZE: |
|
66c02f83f5bf
Date: Sun, 27 Jul 2003 22:37:59 +0200
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diff
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|
1451 video->gl_config.buffer_size = value; |
| 0 | 1452 break; |
| 1453 case SDL_GL_DEPTH_SIZE: | |
| 1454 video->gl_config.depth_size = value; | |
| 1455 break; | |
| 1456 case SDL_GL_STENCIL_SIZE: | |
| 1457 video->gl_config.stencil_size = value; | |
| 1458 break; | |
|
450
8a43e0cbf02f
Added SDL_GL_STEREO for stereoscopic OpenGL contexts
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433
diff
changeset
|
1459 case SDL_GL_ACCUM_RED_SIZE: |
| 0 | 1460 video->gl_config.accum_red_size = value; |
| 1461 break; | |
|
450
8a43e0cbf02f
Added SDL_GL_STEREO for stereoscopic OpenGL contexts
Sam Lantinga <slouken@libsdl.org>
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diff
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|
1462 case SDL_GL_ACCUM_GREEN_SIZE: |
| 0 | 1463 video->gl_config.accum_green_size = value; |
| 1464 break; | |
|
450
8a43e0cbf02f
Added SDL_GL_STEREO for stereoscopic OpenGL contexts
Sam Lantinga <slouken@libsdl.org>
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433
diff
changeset
|
1465 case SDL_GL_ACCUM_BLUE_SIZE: |
| 0 | 1466 video->gl_config.accum_blue_size = value; |
| 1467 break; | |
|
450
8a43e0cbf02f
Added SDL_GL_STEREO for stereoscopic OpenGL contexts
Sam Lantinga <slouken@libsdl.org>
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433
diff
changeset
|
1468 case SDL_GL_ACCUM_ALPHA_SIZE: |
| 0 | 1469 video->gl_config.accum_alpha_size = value; |
| 1470 break; | |
|
450
8a43e0cbf02f
Added SDL_GL_STEREO for stereoscopic OpenGL contexts
Sam Lantinga <slouken@libsdl.org>
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433
diff
changeset
|
1471 case SDL_GL_STEREO: |
|
8a43e0cbf02f
Added SDL_GL_STEREO for stereoscopic OpenGL contexts
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diff
changeset
|
1472 video->gl_config.stereo = value; |
|
8a43e0cbf02f
Added SDL_GL_STEREO for stereoscopic OpenGL contexts
Sam Lantinga <slouken@libsdl.org>
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diff
changeset
|
1473 break; |
|
656
864e2d2a9a55
Merged in Ryan's multisample code for MacOS, and changed the constants to match.
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diff
changeset
|
1474 case SDL_GL_MULTISAMPLEBUFFERS: |
|
864e2d2a9a55
Merged in Ryan's multisample code for MacOS, and changed the constants to match.
Sam Lantinga <slouken@libsdl.org>
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changeset
|
1475 video->gl_config.multisamplebuffers = value; |
|
655
9c42ee1b7d77
Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
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diff
changeset
|
1476 break; |
|
656
864e2d2a9a55
Merged in Ryan's multisample code for MacOS, and changed the constants to match.
Sam Lantinga <slouken@libsdl.org>
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655
diff
changeset
|
1477 case SDL_GL_MULTISAMPLESAMPLES: |
|
864e2d2a9a55
Merged in Ryan's multisample code for MacOS, and changed the constants to match.
Sam Lantinga <slouken@libsdl.org>
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diff
changeset
|
1478 video->gl_config.multisamplesamples = value; |
|
655
9c42ee1b7d77
Date: Thu, 24 Apr 2003 15:13:47 -0400
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parents:
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diff
changeset
|
1479 break; |
| 1737 | 1480 case SDL_GL_ACCELERATED_VISUAL: |
| 1481 video->gl_config.accelerated = value; | |
| 1482 break; | |
|
1736
3b2a92126f4d
Implemented bug #2, 117:
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parents:
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diff
changeset
|
1483 case SDL_GL_SWAP_CONTROL: |
|
3b2a92126f4d
Implemented bug #2, 117:
Sam Lantinga <slouken@libsdl.org>
parents:
1545
diff
changeset
|
1484 video->gl_config.swap_control = value; |
|
3b2a92126f4d
Implemented bug #2, 117:
Sam Lantinga <slouken@libsdl.org>
parents:
1545
diff
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1485 break; |
| 0 | 1486 default: |
| 1487 SDL_SetError("Unknown OpenGL attribute"); | |
| 1488 retval = -1; | |
| 1489 break; | |
| 1490 } | |
| 1491 return(retval); | |
| 1492 } | |
| 1493 | |
| 1494 /* Retrieve an attribute value from the windowing system. */ | |
| 1495 int SDL_GL_GetAttribute(SDL_GLattr attr, int* value) | |
| 1496 { | |
| 1497 int retval = -1; | |
| 1498 SDL_VideoDevice* video = current_video; | |
| 1499 SDL_VideoDevice* this = current_video; | |
| 1500 | |
| 1501 if ( video->GL_GetAttribute ) { | |
| 1502 retval = this->GL_GetAttribute(this, attr, value); | |
|
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1503 } else { |
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1504 *value = 0; |
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1505 SDL_SetError("GL_GetAttribute not supported"); |
| 0 | 1506 } |
| 1507 return retval; | |
| 1508 } | |
| 1509 | |
| 1510 /* Perform a GL buffer swap on the current GL context */ | |
| 1511 void SDL_GL_SwapBuffers(void) | |
| 1512 { | |
| 1513 SDL_VideoDevice *video = current_video; | |
| 1514 SDL_VideoDevice *this = current_video; | |
| 1515 | |
| 1516 if ( video->screen->flags & SDL_OPENGL ) { | |
|
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1517 video->GL_SwapBuffers(this); |
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1518 } else { |
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1519 SDL_SetError("OpenGL video mode has not been set"); |
| 0 | 1520 } |
| 1521 } | |
| 1522 | |
| 1523 /* Update rects with locking */ | |
| 1524 void SDL_GL_UpdateRectsLock(SDL_VideoDevice* this, int numrects, SDL_Rect *rects) | |
| 1525 { | |
| 1526 SDL_GL_Lock(); | |
| 1527 SDL_GL_UpdateRects(numrects, rects); | |
| 1528 SDL_GL_Unlock(); | |
| 1529 } | |
| 1530 | |
| 1531 /* Update rects without state setting and changing (the caller is responsible for it) */ | |
| 1532 void SDL_GL_UpdateRects(int numrects, SDL_Rect *rects) | |
| 1533 { | |
|
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1534 #if SDL_VIDEO_OPENGL |
| 0 | 1535 SDL_VideoDevice *this = current_video; |
| 1536 SDL_Rect update, tmp; | |
| 1537 int x, y, i; | |
| 1538 | |
| 1539 for ( i = 0; i < numrects; i++ ) | |
| 1540 { | |
| 1541 tmp.y = rects[i].y; | |
| 1542 tmp.h = rects[i].h; | |
| 1543 for ( y = 0; y <= rects[i].h / 256; y++ ) | |
| 1544 { | |
| 1545 tmp.x = rects[i].x; | |
| 1546 tmp.w = rects[i].w; | |
| 1547 for ( x = 0; x <= rects[i].w / 256; x++ ) | |
| 1548 { | |
| 1549 update.x = tmp.x; | |
| 1550 update.y = tmp.y; | |
| 1551 update.w = tmp.w; | |
| 1552 update.h = tmp.h; | |
| 1553 | |
| 1554 if ( update.w > 256 ) | |
| 1555 update.w = 256; | |
| 1556 | |
| 1557 if ( update.h > 256 ) | |
| 1558 update.h = 256; | |
| 1559 | |
| 1560 this->glFlush(); | |
| 1561 this->glTexSubImage2D( | |
| 1562 GL_TEXTURE_2D, | |
| 1563 0, | |
| 1564 0, | |
| 1565 0, | |
| 1566 update.w, | |
| 1567 update.h, | |
| 1568 this->is_32bit? GL_RGBA : GL_RGB, | |
| 1569 #ifdef GL_VERSION_1_2 | |
| 1570 this->is_32bit ? GL_UNSIGNED_BYTE : GL_UNSIGNED_SHORT_5_6_5, | |
| 1571 #else | |
| 1572 GL_UNSIGNED_BYTE, | |
| 1573 #endif | |
| 1574 (Uint8 *)this->screen->pixels + | |
| 1575 this->screen->format->BytesPerPixel * update.x + | |
| 1576 update.y * this->screen->pitch ); | |
| 1577 | |
| 1578 this->glFlush(); | |
| 1579 /* | |
| 1580 * Note the parens around the function name: | |
| 1581 * This is because some OpenGL implementations define glTexCoord etc | |
| 1582 * as macros, and we don't want them expanded here. | |
| 1583 */ | |
| 1584 this->glBegin(GL_TRIANGLE_STRIP); | |
| 1585 (this->glTexCoord2f)( 0.0, 0.0 ); | |
| 1586 (this->glVertex2i)( update.x, update.y ); | |
| 1587 (this->glTexCoord2f)( (float)(update.w / 256.0), 0.0 ); | |
| 1588 (this->glVertex2i)( update.x + update.w, update.y ); | |
| 1589 (this->glTexCoord2f)( 0.0, (float)(update.h / 256.0) ); | |
| 1590 (this->glVertex2i)( update.x, update.y + update.h ); | |
| 1591 (this->glTexCoord2f)( (float)(update.w / 256.0), (float)(update.h / 256.0) ); | |
| 1592 (this->glVertex2i)( update.x + update.w , update.y + update.h ); | |
| 1593 this->glEnd(); | |
| 1594 | |
| 1595 tmp.x += 256; | |
| 1596 tmp.w -= 256; | |
| 1597 } | |
| 1598 tmp.y += 256; | |
| 1599 tmp.h -= 256; | |
| 1600 } | |
| 1601 } | |
| 1602 #endif | |
| 1603 } | |
| 1604 | |
| 1605 /* Lock == save current state */ | |
| 1606 void SDL_GL_Lock() | |
| 1607 { | |
|
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1608 #if SDL_VIDEO_OPENGL |
| 0 | 1609 lock_count--; |
| 1610 if (lock_count==-1) | |
| 1611 { | |
| 1612 SDL_VideoDevice *this = current_video; | |
| 1613 | |
| 1614 this->glPushAttrib( GL_ALL_ATTRIB_BITS ); /* TODO: narrow range of what is saved */ | |
|
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1615 #ifdef GL_CLIENT_PIXEL_STORE_BIT |
| 0 | 1616 this->glPushClientAttrib( GL_CLIENT_PIXEL_STORE_BIT ); |
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1617 #endif |
| 0 | 1618 |
| 1619 this->glEnable(GL_TEXTURE_2D); | |
| 1620 this->glEnable(GL_BLEND); | |
| 1621 this->glDisable(GL_FOG); | |
| 1622 this->glDisable(GL_ALPHA_TEST); | |
| 1623 this->glDisable(GL_DEPTH_TEST); | |
| 1624 this->glDisable(GL_SCISSOR_TEST); | |
| 1625 this->glDisable(GL_STENCIL_TEST); | |
| 1626 this->glDisable(GL_CULL_FACE); | |
| 1627 | |
| 1628 this->glBindTexture( GL_TEXTURE_2D, this->texture ); | |
| 1629 this->glTexEnvf( GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE ); | |
| 1630 this->glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST ); | |
| 1631 this->glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST ); | |
| 1632 this->glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT ); | |
| 1633 this->glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT ); | |
| 1634 | |
| 1635 this->glPixelStorei( GL_UNPACK_ROW_LENGTH, this->screen->pitch / this->screen->format->BytesPerPixel ); | |
| 1636 this->glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA); | |
| 1637 (this->glColor4f)(1.0, 1.0, 1.0, 1.0); /* Solaris workaround */ | |
| 1638 | |
| 1639 this->glViewport(0, 0, this->screen->w, this->screen->h); | |
| 1640 this->glMatrixMode(GL_PROJECTION); | |
| 1641 this->glPushMatrix(); | |
| 1642 this->glLoadIdentity(); | |
| 1643 | |
| 1644 this->glOrtho(0.0, (GLdouble) this->screen->w, (GLdouble) this->screen->h, 0.0, 0.0, 1.0); | |
| 1645 | |
| 1646 this->glMatrixMode(GL_MODELVIEW); | |
| 1647 this->glPushMatrix(); | |
| 1648 this->glLoadIdentity(); | |
| 1649 } | |
| 1650 #endif | |
| 1651 } | |
| 1652 | |
| 1653 /* Unlock == restore saved state */ | |
| 1654 void SDL_GL_Unlock() | |
| 1655 { | |
|
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1656 #if SDL_VIDEO_OPENGL |
| 0 | 1657 lock_count++; |
| 1658 if (lock_count==0) | |
| 1659 { | |
| 1660 SDL_VideoDevice *this = current_video; | |
| 1661 | |
| 1662 this->glPopMatrix(); | |
| 1663 this->glMatrixMode(GL_PROJECTION); | |
| 1664 this->glPopMatrix(); | |
| 1665 | |
| 1666 this->glPopClientAttrib(); | |
| 1667 this->glPopAttrib(); | |
| 1668 } | |
| 1669 #endif | |
| 1670 } | |
| 1671 | |
| 1672 /* | |
| 1673 * Sets/Gets the title and icon text of the display window, if any. | |
| 1674 */ | |
| 1675 void SDL_WM_SetCaption (const char *title, const char *icon) | |
| 1676 { | |
| 1677 SDL_VideoDevice *video = current_video; | |
| 1678 SDL_VideoDevice *this = current_video; | |
| 1679 | |
|
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1680 if ( video ) { |
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1681 if ( title ) { |
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1682 if ( video->wm_title ) { |
|
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1683 SDL_free(video->wm_title); |
|
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1684 } |
|
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1685 video->wm_title = SDL_strdup(title); |
| 0 | 1686 } |
|
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1687 if ( icon ) { |
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1688 if ( video->wm_icon ) { |
|
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1689 SDL_free(video->wm_icon); |
|
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1690 } |
|
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1691 video->wm_icon = SDL_strdup(icon); |
| 0 | 1692 } |
|
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1693 if ( (title || icon) && (video->SetCaption != NULL) ) { |
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1694 video->SetCaption(this, video->wm_title,video->wm_icon); |
| 0 | 1695 } |
| 1696 } | |
| 1697 } | |
| 1698 void SDL_WM_GetCaption (char **title, char **icon) | |
| 1699 { | |
|
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1700 SDL_VideoDevice *video = current_video; |
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1701 |
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1702 if ( video ) { |
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1703 if ( title ) { |
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1704 *title = video->wm_title; |
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1705 } |
|
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1706 if ( icon ) { |
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1707 *icon = video->wm_icon; |
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1708 } |
| 0 | 1709 } |
| 1710 } | |
| 1711 | |
|
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1712 /* Utility function used by SDL_WM_SetIcon(); |
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1713 * flags & 1 for color key, flags & 2 for alpha channel. */ |
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1714 static void CreateMaskFromColorKeyOrAlpha(SDL_Surface *icon, Uint8 *mask, int flags) |
| 0 | 1715 { |
| 1716 int x, y; | |
| 1717 Uint32 colorkey; | |
| 1718 #define SET_MASKBIT(icon, x, y, mask) \ | |
| 1719 mask[(y*((icon->w+7)/8))+(x/8)] &= ~(0x01<<(7-(x%8))) | |
| 1720 | |
| 1721 colorkey = icon->format->colorkey; | |
| 1722 switch (icon->format->BytesPerPixel) { | |
| 1723 case 1: { Uint8 *pixels; | |
| 1724 for ( y=0; y<icon->h; ++y ) { | |
| 1725 pixels = (Uint8 *)icon->pixels + y*icon->pitch; | |
| 1726 for ( x=0; x<icon->w; ++x ) { | |
| 1727 if ( *pixels++ == colorkey ) { | |
| 1728 SET_MASKBIT(icon, x, y, mask); | |
| 1729 } | |
| 1730 } | |
| 1731 } | |
| 1732 } | |
| 1733 break; | |
| 1734 | |
| 1735 case 2: { Uint16 *pixels; | |
| 1736 for ( y=0; y<icon->h; ++y ) { | |
| 1737 pixels = (Uint16 *)icon->pixels + | |
| 1738 y*icon->pitch/2; | |
| 1739 for ( x=0; x<icon->w; ++x ) { | |
|
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1740 if ( (flags & 1) && *pixels == colorkey ) { |
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1741 SET_MASKBIT(icon, x, y, mask); |
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1742 } else if((flags & 2) && (*pixels & icon->format->Amask) == 0) { |
| 0 | 1743 SET_MASKBIT(icon, x, y, mask); |
| 1744 } | |
|
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1745 pixels++; |
| 0 | 1746 } |
| 1747 } | |
| 1748 } | |
| 1749 break; | |
| 1750 | |
| 1751 case 4: { Uint32 *pixels; | |
| 1752 for ( y=0; y<icon->h; ++y ) { | |
| 1753 pixels = (Uint32 *)icon->pixels + | |
| 1754 y*icon->pitch/4; | |
| 1755 for ( x=0; x<icon->w; ++x ) { | |
|
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1756 if ( (flags & 1) && *pixels == colorkey ) { |
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1757 SET_MASKBIT(icon, x, y, mask); |
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1758 } else if((flags & 2) && (*pixels & icon->format->Amask) == 0) { |
| 0 | 1759 SET_MASKBIT(icon, x, y, mask); |
| 1760 } | |
|
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1761 pixels++; |
| 0 | 1762 } |
| 1763 } | |
| 1764 } | |
| 1765 break; | |
| 1766 } | |
| 1767 } | |
| 1768 | |
| 1769 /* | |
| 1770 * Sets the window manager icon for the display window. | |
| 1771 */ | |
| 1772 void SDL_WM_SetIcon (SDL_Surface *icon, Uint8 *mask) | |
| 1773 { | |
| 1774 SDL_VideoDevice *video = current_video; | |
| 1775 SDL_VideoDevice *this = current_video; | |
| 1776 | |
| 1777 if ( icon && video->SetIcon ) { | |
| 1778 /* Generate a mask if necessary, and create the icon! */ | |
| 1779 if ( mask == NULL ) { | |
| 1780 int mask_len = icon->h*(icon->w+7)/8; | |
|
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1781 int flags = 0; |
|
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1782 mask = (Uint8 *)SDL_malloc(mask_len); |
| 0 | 1783 if ( mask == NULL ) { |
| 1784 return; | |
| 1785 } | |
|
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1786 SDL_memset(mask, ~0, mask_len); |
|
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1787 if ( icon->flags & SDL_SRCCOLORKEY ) flags |= 1; |
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1788 if ( icon->flags & SDL_SRCALPHA ) flags |= 2; |
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1789 if( flags ) { |
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1790 CreateMaskFromColorKeyOrAlpha(icon, mask, flags); |
| 0 | 1791 } |
| 1792 video->SetIcon(video, icon, mask); | |
|
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1793 SDL_free(mask); |
| 0 | 1794 } else { |
| 1795 video->SetIcon(this, icon, mask); | |
| 1796 } | |
| 1797 } | |
| 1798 } | |
| 1799 | |
| 1800 /* | |
| 1801 * Grab or ungrab the keyboard and mouse input. | |
| 1802 * This function returns the final grab mode after calling the | |
| 1803 * driver dependent function. | |
| 1804 */ | |
| 1805 static SDL_GrabMode SDL_WM_GrabInputRaw(SDL_GrabMode mode) | |
| 1806 { | |
| 1807 SDL_VideoDevice *video = current_video; | |
| 1808 SDL_VideoDevice *this = current_video; | |
| 1809 | |
| 1810 /* Only do something if we have support for grabs */ | |
| 1811 if ( video->GrabInput == NULL ) { | |
| 1812 return(video->input_grab); | |
| 1813 } | |
| 1814 | |
| 1815 /* If the final grab mode if off, only then do we actually grab */ | |
| 1816 #ifdef DEBUG_GRAB | |
| 1817 printf("SDL_WM_GrabInputRaw(%d) ... ", mode); | |
| 1818 #endif | |
| 1819 if ( mode == SDL_GRAB_OFF ) { | |
| 1820 if ( video->input_grab != SDL_GRAB_OFF ) { | |
| 1821 mode = video->GrabInput(this, mode); | |
| 1822 } | |
| 1823 } else { | |
| 1824 if ( video->input_grab == SDL_GRAB_OFF ) { | |
| 1825 mode = video->GrabInput(this, mode); | |
| 1826 } | |
| 1827 } | |
| 1828 if ( mode != video->input_grab ) { | |
| 1829 video->input_grab = mode; | |
| 1830 if ( video->CheckMouseMode ) { | |
| 1831 video->CheckMouseMode(this); | |
| 1832 } | |
| 1833 } | |
| 1834 #ifdef DEBUG_GRAB | |
| 1835 printf("Final mode %d\n", video->input_grab); | |
| 1836 #endif | |
| 1837 | |
| 1838 /* Return the final grab state */ | |
| 1839 if ( mode >= SDL_GRAB_FULLSCREEN ) { | |
| 1840 mode -= SDL_GRAB_FULLSCREEN; | |
| 1841 } | |
| 1842 return(mode); | |
| 1843 } | |
| 1844 SDL_GrabMode SDL_WM_GrabInput(SDL_GrabMode mode) | |
| 1845 { | |
| 1846 SDL_VideoDevice *video = current_video; | |
| 1847 | |
|
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1848 /* If the video isn't initialized yet, we can't do anything */ |
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1849 if ( ! video ) { |
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1850 return SDL_GRAB_OFF; |
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parents:
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1851 } |
| 0 | 1852 |
| 1853 /* Return the current mode on query */ | |
| 1854 if ( mode == SDL_GRAB_QUERY ) { | |
| 1855 mode = video->input_grab; | |
| 1856 if ( mode >= SDL_GRAB_FULLSCREEN ) { | |
| 1857 mode -= SDL_GRAB_FULLSCREEN; | |
| 1858 } | |
| 1859 return(mode); | |
| 1860 } | |
| 1861 | |
| 1862 #ifdef DEBUG_GRAB | |
| 1863 printf("SDL_WM_GrabInput(%d) ... ", mode); | |
| 1864 #endif | |
| 1865 /* If the video surface is fullscreen, we always grab */ | |
| 1866 if ( mode >= SDL_GRAB_FULLSCREEN ) { | |
| 1867 mode -= SDL_GRAB_FULLSCREEN; | |
| 1868 } | |
| 1869 if ( SDL_VideoSurface && (SDL_VideoSurface->flags & SDL_FULLSCREEN) ) { | |
| 1870 mode += SDL_GRAB_FULLSCREEN; | |
| 1871 } | |
| 1872 return(SDL_WM_GrabInputRaw(mode)); | |
| 1873 } | |
| 1874 static SDL_GrabMode SDL_WM_GrabInputOff(void) | |
| 1875 { | |
| 1876 SDL_GrabMode mode; | |
| 1877 | |
| 1878 /* First query the current grab state */ | |
| 1879 mode = SDL_WM_GrabInput(SDL_GRAB_QUERY); | |
| 1880 | |
| 1881 /* Now explicitly turn off input grab */ | |
| 1882 SDL_WM_GrabInputRaw(SDL_GRAB_OFF); | |
| 1883 | |
| 1884 /* Return the old state */ | |
| 1885 return(mode); | |
| 1886 } | |
| 1887 | |
| 1888 /* | |
| 1889 * Iconify the window in window managed environments. | |
| 1890 * A successful iconification will result in an SDL_APPACTIVE loss event. | |
| 1891 */ | |
| 1892 int SDL_WM_IconifyWindow(void) | |
| 1893 { | |
| 1894 SDL_VideoDevice *video = current_video; | |
| 1895 SDL_VideoDevice *this = current_video; | |
| 1896 int retval; | |
| 1897 | |
| 1898 retval = 0; | |
| 1899 if ( video->IconifyWindow ) { | |
| 1900 retval = video->IconifyWindow(this); | |
| 1901 } | |
| 1902 return(retval); | |
| 1903 } | |
| 1904 | |
| 1905 /* | |
| 1906 * Toggle fullscreen mode | |
| 1907 */ | |
| 1908 int SDL_WM_ToggleFullScreen(SDL_Surface *surface) | |
| 1909 { | |
| 1910 SDL_VideoDevice *video = current_video; | |
| 1911 SDL_VideoDevice *this = current_video; | |
| 1912 int toggled; | |
| 1913 | |
| 1914 toggled = 0; | |
| 1915 if ( SDL_PublicSurface && (surface == SDL_PublicSurface) && | |
| 1916 video->ToggleFullScreen ) { | |
| 1917 if ( surface->flags & SDL_FULLSCREEN ) { | |
| 1918 toggled = video->ToggleFullScreen(this, 0); | |
| 1919 if ( toggled ) { | |
| 1920 SDL_VideoSurface->flags &= ~SDL_FULLSCREEN; | |
| 1921 SDL_PublicSurface->flags &= ~SDL_FULLSCREEN; | |
| 1922 } | |
| 1923 } else { | |
| 1924 toggled = video->ToggleFullScreen(this, 1); | |
| 1925 if ( toggled ) { | |
| 1926 SDL_VideoSurface->flags |= SDL_FULLSCREEN; | |
| 1927 SDL_PublicSurface->flags |= SDL_FULLSCREEN; | |
| 1928 } | |
| 1929 } | |
| 1930 /* Double-check the grab state inside SDL_WM_GrabInput() */ | |
| 1931 if ( toggled ) { | |
| 1932 SDL_WM_GrabInput(video->input_grab); | |
| 1933 } | |
| 1934 } | |
| 1935 return(toggled); | |
| 1936 } | |
| 1937 | |
| 1938 /* | |
| 1939 * Get some platform dependent window manager information | |
| 1940 */ | |
| 1941 int SDL_GetWMInfo (SDL_SysWMinfo *info) | |
| 1942 { | |
| 1943 SDL_VideoDevice *video = current_video; | |
| 1944 SDL_VideoDevice *this = current_video; | |
| 1945 | |
| 1946 if ( video && video->GetWMInfo ) { | |
| 1947 return(video->GetWMInfo(this, info)); | |
| 1948 } else { | |
| 1949 return(0); | |
| 1950 } | |
| 1951 } |