Mercurial > sdl-ios-xcode
annotate src/video/SDL_video.c @ 4249:429c8dd3175d SDL-1.2
Fixed bug #713
Don't clamp the mouse coordinates to the video surface size, instead clamp them to the last known window size.
This allows users to get the correct mouse coordinates even if they don't call SDL_SetVideoMode() in response to an SDL_VIDEORESIZE event (used as a hack to retain the OpenGL context on Windows and Linux after a window resize)
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Sun, 27 Sep 2009 05:18:43 +0000 |
| parents | 3b8ac3d311a2 |
| children | d62725f761a1 |
| 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 | |
| 4165 | 66 #if SDL_VIDEO_DRIVER_PS3 |
| 67 &PS3_bootstrap, | |
| 68 #endif | |
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69 #if SDL_VIDEO_DRIVER_GGI |
| 0 | 70 &GGI_bootstrap, |
| 71 #endif | |
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72 #if SDL_VIDEO_DRIVER_VGL |
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73 &VGL_bootstrap, |
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74 #endif |
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75 #if SDL_VIDEO_DRIVER_SVGALIB |
| 0 | 76 &SVGALIB_bootstrap, |
| 77 #endif | |
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78 #if SDL_VIDEO_DRIVER_GAPI |
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79 &GAPI_bootstrap, |
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80 #endif |
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81 #if SDL_VIDEO_DRIVER_WINDIB |
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82 &WINDIB_bootstrap, |
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83 #endif |
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84 #if SDL_VIDEO_DRIVER_DDRAW |
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85 &DIRECTX_bootstrap, |
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86 #endif |
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87 #if SDL_VIDEO_DRIVER_BWINDOW |
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88 &BWINDOW_bootstrap, |
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89 #endif |
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90 #if SDL_VIDEO_DRIVER_TOOLBOX |
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91 &TOOLBOX_bootstrap, |
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92 #endif |
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93 #if SDL_VIDEO_DRIVER_DRAWSPROCKET |
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94 &DSp_bootstrap, |
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95 #endif |
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96 #if SDL_VIDEO_DRIVER_PHOTON |
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97 &ph_bootstrap, |
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98 #endif |
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99 #if SDL_VIDEO_DRIVER_EPOC |
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100 &EPOC_bootstrap, |
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101 #endif |
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102 #if SDL_VIDEO_DRIVER_XBIOS |
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103 &XBIOS_bootstrap, |
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104 #endif |
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105 #if SDL_VIDEO_DRIVER_GEM |
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106 &GEM_bootstrap, |
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107 #endif |
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108 #if SDL_VIDEO_DRIVER_PICOGUI |
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109 &PG_bootstrap, |
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110 #endif |
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111 #if SDL_VIDEO_DRIVER_DC |
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112 &DC_bootstrap, |
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113 #endif |
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114 #if SDL_VIDEO_DRIVER_NDS |
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115 &NDS_bootstrap, |
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116 #endif |
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117 #if SDL_VIDEO_DRIVER_RISCOS |
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118 &RISCOS_bootstrap, |
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119 #endif |
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120 #if SDL_VIDEO_DRIVER_OS2FS |
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121 &OS2FSLib_bootstrap, |
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122 #endif |
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123 #if SDL_VIDEO_DRIVER_AALIB |
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124 &AALIB_bootstrap, |
| 0 | 125 #endif |
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126 #if SDL_VIDEO_DRIVER_DUMMY |
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127 &DUMMY_bootstrap, |
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128 #endif |
| 0 | 129 NULL |
| 130 }; | |
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131 |
| 0 | 132 SDL_VideoDevice *current_video = NULL; |
| 133 | |
| 134 /* Various local functions */ | |
| 135 int SDL_VideoInit(const char *driver_name, Uint32 flags); | |
| 136 void SDL_VideoQuit(void); | |
| 137 void SDL_GL_UpdateRectsLock(SDL_VideoDevice* this, int numrects, SDL_Rect* rects); | |
| 138 | |
| 139 static SDL_GrabMode SDL_WM_GrabInputOff(void); | |
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140 #if SDL_VIDEO_OPENGL |
| 0 | 141 static int lock_count = 0; |
| 142 #endif | |
| 143 | |
| 144 | |
| 145 /* | |
| 146 * Initialize the video and event subsystems -- determine native pixel format | |
| 147 */ | |
| 148 int SDL_VideoInit (const char *driver_name, Uint32 flags) | |
| 149 { | |
| 150 SDL_VideoDevice *video; | |
| 151 int index; | |
| 152 int i; | |
| 153 SDL_PixelFormat vformat; | |
| 154 Uint32 video_flags; | |
| 155 | |
| 156 /* Toggle the event thread flags, based on OS requirements */ | |
| 157 #if defined(MUST_THREAD_EVENTS) | |
| 158 flags |= SDL_INIT_EVENTTHREAD; | |
| 159 #elif defined(CANT_THREAD_EVENTS) | |
| 160 if ( (flags & SDL_INIT_EVENTTHREAD) == SDL_INIT_EVENTTHREAD ) { | |
| 161 SDL_SetError("OS doesn't support threaded events"); | |
| 162 return(-1); | |
| 163 } | |
| 164 #endif | |
| 165 | |
| 166 /* Check to make sure we don't overwrite 'current_video' */ | |
| 167 if ( current_video != NULL ) { | |
| 168 SDL_VideoQuit(); | |
| 169 } | |
| 170 | |
| 171 /* Select the proper video driver */ | |
| 172 index = 0; | |
| 173 video = NULL; | |
| 174 if ( driver_name != NULL ) { | |
| 175 #if 0 /* This will be replaced with a better driver selection API */ | |
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176 if ( SDL_strrchr(driver_name, ':') != NULL ) { |
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177 index = atoi(SDL_strrchr(driver_name, ':')+1); |
| 0 | 178 } |
| 179 #endif | |
| 180 for ( i=0; bootstrap[i]; ++i ) { | |
| 3882 | 181 if ( SDL_strcasecmp(bootstrap[i]->name, driver_name) == 0) { |
| 0 | 182 if ( bootstrap[i]->available() ) { |
| 183 video = bootstrap[i]->create(index); | |
| 184 break; | |
| 185 } | |
| 186 } | |
| 187 } | |
| 188 } else { | |
| 189 for ( i=0; bootstrap[i]; ++i ) { | |
| 190 if ( bootstrap[i]->available() ) { | |
| 191 video = bootstrap[i]->create(index); | |
| 192 if ( video != NULL ) { | |
| 193 break; | |
| 194 } | |
| 195 } | |
| 196 } | |
| 197 } | |
| 198 if ( video == NULL ) { | |
| 199 SDL_SetError("No available video device"); | |
| 200 return(-1); | |
| 201 } | |
| 202 current_video = video; | |
| 203 current_video->name = bootstrap[i]->name; | |
| 204 | |
| 205 /* Do some basic variable initialization */ | |
| 206 video->screen = NULL; | |
| 207 video->shadow = NULL; | |
| 208 video->visible = NULL; | |
| 209 video->physpal = NULL; | |
| 210 video->gammacols = NULL; | |
| 211 video->gamma = NULL; | |
| 212 video->wm_title = NULL; | |
| 213 video->wm_icon = NULL; | |
| 214 video->offset_x = 0; | |
| 215 video->offset_y = 0; | |
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216 SDL_memset(&video->info, 0, (sizeof video->info)); |
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217 |
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218 video->displayformatalphapixel = NULL; |
| 0 | 219 |
| 220 /* Set some very sane GL defaults */ | |
| 221 video->gl_config.driver_loaded = 0; | |
| 222 video->gl_config.dll_handle = NULL; | |
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223 video->gl_config.red_size = 3; |
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224 video->gl_config.green_size = 3; |
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225 video->gl_config.blue_size = 2; |
| 0 | 226 video->gl_config.alpha_size = 0; |
| 227 video->gl_config.buffer_size = 0; | |
| 228 video->gl_config.depth_size = 16; | |
| 229 video->gl_config.stencil_size = 0; | |
| 230 video->gl_config.double_buffer = 1; | |
| 231 video->gl_config.accum_red_size = 0; | |
| 232 video->gl_config.accum_green_size = 0; | |
| 233 video->gl_config.accum_blue_size = 0; | |
| 234 video->gl_config.accum_alpha_size = 0; | |
|
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235 video->gl_config.stereo = 0; |
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236 video->gl_config.multisamplebuffers = 0; |
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237 video->gl_config.multisamplesamples = 0; |
| 1737 | 238 video->gl_config.accelerated = -1; /* not known, don't set */ |
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239 video->gl_config.swap_control = -1; /* not known, don't set */ |
| 0 | 240 |
| 241 /* Initialize the video subsystem */ | |
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242 SDL_memset(&vformat, 0, sizeof(vformat)); |
| 0 | 243 if ( video->VideoInit(video, &vformat) < 0 ) { |
| 244 SDL_VideoQuit(); | |
| 245 return(-1); | |
| 246 } | |
| 247 | |
| 248 /* Create a zero sized video surface of the appropriate format */ | |
| 249 video_flags = SDL_SWSURFACE; | |
| 250 SDL_VideoSurface = SDL_CreateRGBSurface(video_flags, 0, 0, | |
| 251 vformat.BitsPerPixel, | |
| 252 vformat.Rmask, vformat.Gmask, vformat.Bmask, 0); | |
| 253 if ( SDL_VideoSurface == NULL ) { | |
| 254 SDL_VideoQuit(); | |
| 255 return(-1); | |
| 256 } | |
| 257 SDL_PublicSurface = NULL; /* Until SDL_SetVideoMode() */ | |
| 258 | |
| 259 #if 0 /* Don't change the current palette - may be used by other programs. | |
| 260 * The application can't do anything with the display surface until | |
| 261 * a video mode has been set anyway. :) | |
| 262 */ | |
| 263 /* If we have a palettized surface, create a default palette */ | |
| 264 if ( SDL_VideoSurface->format->palette ) { | |
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265 SDL_PixelFormat *vf = SDL_VideoSurface->format; |
| 0 | 266 SDL_DitherColors(vf->palette->colors, vf->BitsPerPixel); |
| 267 video->SetColors(video, | |
| 268 0, vf->palette->ncolors, vf->palette->colors); | |
| 269 } | |
| 270 #endif | |
| 271 video->info.vfmt = SDL_VideoSurface->format; | |
| 272 | |
| 273 /* Start the event loop */ | |
| 274 if ( SDL_StartEventLoop(flags) < 0 ) { | |
| 275 SDL_VideoQuit(); | |
| 276 return(-1); | |
| 277 } | |
| 278 SDL_CursorInit(flags & SDL_INIT_EVENTTHREAD); | |
| 279 | |
| 280 /* We're ready to go! */ | |
| 281 return(0); | |
| 282 } | |
| 283 | |
| 284 char *SDL_VideoDriverName(char *namebuf, int maxlen) | |
| 285 { | |
| 286 if ( current_video != NULL ) { | |
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287 SDL_strlcpy(namebuf, current_video->name, maxlen); |
| 0 | 288 return(namebuf); |
| 289 } | |
| 290 return(NULL); | |
| 291 } | |
| 292 | |
| 293 /* | |
| 294 * Get the current display surface | |
| 295 */ | |
| 296 SDL_Surface *SDL_GetVideoSurface(void) | |
| 297 { | |
| 298 SDL_Surface *visible; | |
| 299 | |
| 300 visible = NULL; | |
| 301 if ( current_video ) { | |
| 302 visible = current_video->visible; | |
| 303 } | |
| 304 return(visible); | |
| 305 } | |
| 306 | |
| 307 /* | |
| 308 * Get the current information about the video hardware | |
| 309 */ | |
| 310 const SDL_VideoInfo *SDL_GetVideoInfo(void) | |
| 311 { | |
| 312 const SDL_VideoInfo *info; | |
| 313 | |
| 314 info = NULL; | |
| 315 if ( current_video ) { | |
| 316 info = ¤t_video->info; | |
| 317 } | |
| 318 return(info); | |
| 319 } | |
| 320 | |
| 321 /* | |
| 322 * Return a pointer to an array of available screen dimensions for the | |
| 323 * given format, sorted largest to smallest. Returns NULL if there are | |
| 324 * no dimensions available for a particular format, or (SDL_Rect **)-1 | |
| 325 * if any dimension is okay for the given format. If 'format' is NULL, | |
| 326 * the mode list will be for the format given by SDL_GetVideoInfo()->vfmt | |
| 327 */ | |
| 328 SDL_Rect ** SDL_ListModes (SDL_PixelFormat *format, Uint32 flags) | |
| 329 { | |
| 330 SDL_VideoDevice *video = current_video; | |
| 331 SDL_VideoDevice *this = current_video; | |
| 332 SDL_Rect **modes; | |
| 333 | |
| 334 modes = NULL; | |
| 335 if ( SDL_VideoSurface ) { | |
| 336 if ( format == NULL ) { | |
| 337 format = SDL_VideoSurface->format; | |
| 338 } | |
| 339 modes = video->ListModes(this, format, flags); | |
| 340 } | |
| 341 return(modes); | |
| 342 } | |
| 343 | |
| 344 /* | |
| 345 * Check to see if a particular video mode is supported. | |
| 346 * It returns 0 if the requested mode is not supported under any bit depth, | |
| 347 * or returns the bits-per-pixel of the closest available mode with the | |
| 348 * given width and height. If this bits-per-pixel is different from the | |
| 349 * one used when setting the video mode, SDL_SetVideoMode() will succeed, | |
| 350 * but will emulate the requested bits-per-pixel with a shadow surface. | |
| 351 */ | |
| 352 static Uint8 SDL_closest_depths[4][8] = { | |
| 353 /* 8 bit closest depth ordering */ | |
| 354 { 0, 8, 16, 15, 32, 24, 0, 0 }, | |
| 355 /* 15,16 bit closest depth ordering */ | |
| 356 { 0, 16, 15, 32, 24, 8, 0, 0 }, | |
| 357 /* 24 bit closest depth ordering */ | |
| 358 { 0, 24, 32, 16, 15, 8, 0, 0 }, | |
| 359 /* 32 bit closest depth ordering */ | |
| 360 { 0, 32, 16, 15, 24, 8, 0, 0 } | |
| 361 }; | |
| 362 | |
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363 |
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364 #ifdef __MACOS__ /* MPW optimization bug? */ |
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365 #define NEGATIVE_ONE 0xFFFFFFFF |
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366 #else |
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367 #define NEGATIVE_ONE -1 |
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368 #endif |
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369 |
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370 int SDL_VideoModeOK (int width, int height, int bpp, Uint32 flags) |
| 0 | 371 { |
| 372 int table, b, i; | |
| 373 int supported; | |
| 374 SDL_PixelFormat format; | |
| 375 SDL_Rect **sizes; | |
| 376 | |
| 377 /* Currently 1 and 4 bpp are not supported */ | |
| 378 if ( bpp < 8 || bpp > 32 ) { | |
| 379 return(0); | |
| 380 } | |
|
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381 if ( (width <= 0) || (height <= 0) ) { |
| 0 | 382 return(0); |
| 383 } | |
| 384 | |
| 385 /* Search through the list valid of modes */ | |
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386 SDL_memset(&format, 0, sizeof(format)); |
| 0 | 387 supported = 0; |
| 388 table = ((bpp+7)/8)-1; | |
| 389 SDL_closest_depths[table][0] = bpp; | |
| 390 SDL_closest_depths[table][7] = 0; | |
| 391 for ( b = 0; !supported && SDL_closest_depths[table][b]; ++b ) { | |
| 392 format.BitsPerPixel = SDL_closest_depths[table][b]; | |
| 393 sizes = SDL_ListModes(&format, flags); | |
| 394 if ( sizes == (SDL_Rect **)0 ) { | |
| 395 /* No sizes supported at this bit-depth */ | |
| 396 continue; | |
| 397 } else | |
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398 if (sizes == (SDL_Rect **)NEGATIVE_ONE) { |
| 0 | 399 /* Any size supported at this bit-depth */ |
| 400 supported = 1; | |
| 401 continue; | |
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402 } else if (current_video->handles_any_size) { |
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403 /* Driver can center a smaller surface to simulate fullscreen */ |
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404 for ( i=0; sizes[i]; ++i ) { |
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405 if ((sizes[i]->w >= width) && (sizes[i]->h >= height)) { |
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406 supported = 1; /* this mode can fit the centered window. */ |
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407 break; |
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408 } |
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409 } |
| 0 | 410 } else |
| 411 for ( i=0; sizes[i]; ++i ) { | |
| 412 if ((sizes[i]->w == width) && (sizes[i]->h == height)) { | |
| 413 supported = 1; | |
| 414 break; | |
| 415 } | |
| 416 } | |
| 417 } | |
| 418 if ( supported ) { | |
| 419 --b; | |
| 420 return(SDL_closest_depths[table][b]); | |
| 421 } else { | |
| 422 return(0); | |
| 423 } | |
| 424 } | |
| 425 | |
| 426 /* | |
| 427 * Get the closest non-emulated video mode to the one requested | |
| 428 */ | |
| 429 static int SDL_GetVideoMode (int *w, int *h, int *BitsPerPixel, Uint32 flags) | |
| 430 { | |
| 431 int table, b, i; | |
| 432 int supported; | |
| 433 int native_bpp; | |
| 434 SDL_PixelFormat format; | |
| 435 SDL_Rect **sizes; | |
| 436 | |
|
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437 /* Check parameters */ |
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438 if ( *BitsPerPixel < 8 || *BitsPerPixel > 32 ) { |
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439 SDL_SetError("Invalid bits per pixel (range is {8...32})"); |
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440 return(0); |
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441 } |
|
430
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442 if ((*w <= 0) || (*h <= 0)) { |
|
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443 SDL_SetError("Invalid width or height"); |
|
430
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444 return(0); |
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445 } |
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446 |
| 0 | 447 /* Try the original video mode, get the closest depth */ |
| 448 native_bpp = SDL_VideoModeOK(*w, *h, *BitsPerPixel, flags); | |
| 449 if ( native_bpp == *BitsPerPixel ) { | |
| 450 return(1); | |
| 451 } | |
| 452 if ( native_bpp > 0 ) { | |
| 453 *BitsPerPixel = native_bpp; | |
| 454 return(1); | |
| 455 } | |
| 456 | |
| 457 /* No exact size match at any depth, look for closest match */ | |
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458 SDL_memset(&format, 0, sizeof(format)); |
| 0 | 459 supported = 0; |
| 460 table = ((*BitsPerPixel+7)/8)-1; | |
| 461 SDL_closest_depths[table][0] = *BitsPerPixel; | |
| 462 SDL_closest_depths[table][7] = SDL_VideoSurface->format->BitsPerPixel; | |
| 463 for ( b = 0; !supported && SDL_closest_depths[table][b]; ++b ) { | |
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464 int best; |
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465 |
| 0 | 466 format.BitsPerPixel = SDL_closest_depths[table][b]; |
| 467 sizes = SDL_ListModes(&format, flags); | |
| 468 if ( sizes == (SDL_Rect **)0 ) { | |
| 469 /* No sizes supported at this bit-depth */ | |
| 470 continue; | |
| 471 } | |
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472 best=0; |
| 0 | 473 for ( i=0; sizes[i]; ++i ) { |
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474 /* Mode with both dimensions bigger or equal than asked ? */ |
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475 if ((sizes[i]->w >= *w) && (sizes[i]->h >= *h)) { |
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476 /* Mode with any dimension smaller or equal than current best ? */ |
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477 if ((sizes[i]->w <= sizes[best]->w) || (sizes[i]->h <= sizes[best]->h)) { |
|
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478 /* Now choose the mode that has less pixels */ |
|
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479 if ((sizes[i]->w * sizes[i]->h) <= (sizes[best]->w * sizes[best]->h)) { |
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480 best=i; |
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481 supported = 1; |
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482 } |
| 0 | 483 } |
| 484 } | |
| 485 } | |
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486 if (supported) { |
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487 *w=sizes[best]->w; |
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488 *h=sizes[best]->h; |
| 0 | 489 *BitsPerPixel = SDL_closest_depths[table][b]; |
| 490 } | |
| 491 } | |
| 492 if ( ! supported ) { | |
| 493 SDL_SetError("No video mode large enough for %dx%d", *w, *h); | |
| 494 } | |
| 495 return(supported); | |
| 496 } | |
| 497 | |
| 498 /* This should probably go somewhere else -- like SDL_surface.c */ | |
| 499 static void SDL_ClearSurface(SDL_Surface *surface) | |
| 500 { | |
| 501 Uint32 black; | |
| 502 | |
| 503 black = SDL_MapRGB(surface->format, 0, 0, 0); | |
| 504 SDL_FillRect(surface, NULL, black); | |
| 505 if ((surface->flags&SDL_HWSURFACE) && (surface->flags&SDL_DOUBLEBUF)) { | |
| 506 SDL_Flip(surface); | |
| 507 SDL_FillRect(surface, NULL, black); | |
| 508 } | |
|
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509 if (surface->flags&SDL_FULLSCREEN) { |
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510 SDL_Flip(surface); |
|
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511 } |
| 0 | 512 } |
| 513 | |
| 514 /* | |
| 515 * Create a shadow surface suitable for fooling the app. :-) | |
| 516 */ | |
| 517 static void SDL_CreateShadowSurface(int depth) | |
| 518 { | |
| 519 Uint32 Rmask, Gmask, Bmask; | |
| 520 | |
| 521 /* Allocate the shadow surface */ | |
| 522 if ( depth == (SDL_VideoSurface->format)->BitsPerPixel ) { | |
| 523 Rmask = (SDL_VideoSurface->format)->Rmask; | |
| 524 Gmask = (SDL_VideoSurface->format)->Gmask; | |
| 525 Bmask = (SDL_VideoSurface->format)->Bmask; | |
| 526 } else { | |
| 527 Rmask = Gmask = Bmask = 0; | |
| 528 } | |
| 529 SDL_ShadowSurface = SDL_CreateRGBSurface(SDL_SWSURFACE, | |
| 530 SDL_VideoSurface->w, SDL_VideoSurface->h, | |
| 531 depth, Rmask, Gmask, Bmask, 0); | |
| 532 if ( SDL_ShadowSurface == NULL ) { | |
| 533 return; | |
| 534 } | |
| 535 | |
| 536 /* 8-bit shadow surfaces report that they have exclusive palette */ | |
| 537 if ( SDL_ShadowSurface->format->palette ) { | |
| 538 SDL_ShadowSurface->flags |= SDL_HWPALETTE; | |
| 539 if ( depth == (SDL_VideoSurface->format)->BitsPerPixel ) { | |
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540 SDL_memcpy(SDL_ShadowSurface->format->palette->colors, |
| 0 | 541 SDL_VideoSurface->format->palette->colors, |
| 542 SDL_VideoSurface->format->palette->ncolors* | |
| 543 sizeof(SDL_Color)); | |
| 544 } else { | |
| 545 SDL_DitherColors( | |
| 546 SDL_ShadowSurface->format->palette->colors, depth); | |
| 547 } | |
| 548 } | |
| 549 | |
| 550 /* If the video surface is resizable, the shadow should say so */ | |
| 551 if ( (SDL_VideoSurface->flags & SDL_RESIZABLE) == SDL_RESIZABLE ) { | |
| 552 SDL_ShadowSurface->flags |= SDL_RESIZABLE; | |
| 553 } | |
| 554 /* If the video surface has no frame, the shadow should say so */ | |
| 555 if ( (SDL_VideoSurface->flags & SDL_NOFRAME) == SDL_NOFRAME ) { | |
| 556 SDL_ShadowSurface->flags |= SDL_NOFRAME; | |
| 557 } | |
| 558 /* If the video surface is fullscreen, the shadow should say so */ | |
| 559 if ( (SDL_VideoSurface->flags & SDL_FULLSCREEN) == SDL_FULLSCREEN ) { | |
| 560 SDL_ShadowSurface->flags |= SDL_FULLSCREEN; | |
| 561 } | |
| 562 /* If the video surface is flippable, the shadow should say so */ | |
| 563 if ( (SDL_VideoSurface->flags & SDL_DOUBLEBUF) == SDL_DOUBLEBUF ) { | |
| 564 SDL_ShadowSurface->flags |= SDL_DOUBLEBUF; | |
| 565 } | |
| 566 return; | |
| 567 } | |
| 568 | |
|
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569 #ifdef __QNXNTO__ |
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570 #include <sys/neutrino.h> |
|
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571 #endif /* __QNXNTO__ */ |
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572 |
| 0 | 573 /* |
| 574 * Set the requested video mode, allocating a shadow buffer if necessary. | |
| 575 */ | |
| 576 SDL_Surface * SDL_SetVideoMode (int width, int height, int bpp, Uint32 flags) | |
| 577 { | |
| 578 SDL_VideoDevice *video, *this; | |
| 579 SDL_Surface *prev_mode, *mode; | |
| 580 int video_w; | |
| 581 int video_h; | |
| 582 int video_bpp; | |
| 583 int is_opengl; | |
| 584 SDL_GrabMode saved_grab; | |
| 585 | |
| 586 /* Start up the video driver, if necessary.. | |
| 587 WARNING: This is the only function protected this way! | |
| 588 */ | |
| 589 if ( ! current_video ) { | |
| 590 if ( SDL_Init(SDL_INIT_VIDEO|SDL_INIT_NOPARACHUTE) < 0 ) { | |
| 591 return(NULL); | |
| 592 } | |
| 593 } | |
| 594 this = video = current_video; | |
| 595 | |
|
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596 /* Default to the current width and height */ |
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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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597 if ( width == 0 ) { |
|
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598 width = video->info.current_w; |
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599 } |
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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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600 if ( height == 0 ) { |
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601 height = video->info.current_h; |
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602 } |
| 0 | 603 /* Default to the current video bpp */ |
| 604 if ( bpp == 0 ) { | |
| 605 flags |= SDL_ANYFORMAT; | |
| 606 bpp = SDL_VideoSurface->format->BitsPerPixel; | |
| 607 } | |
| 608 | |
| 609 /* Get a good video mode, the closest one possible */ | |
| 610 video_w = width; | |
| 611 video_h = height; | |
| 612 video_bpp = bpp; | |
| 613 if ( ! SDL_GetVideoMode(&video_w, &video_h, &video_bpp, flags) ) { | |
| 614 return(NULL); | |
| 615 } | |
| 616 | |
| 617 /* Check the requested flags */ | |
| 618 /* There's no palette in > 8 bits-per-pixel mode */ | |
| 619 if ( video_bpp > 8 ) { | |
| 620 flags &= ~SDL_HWPALETTE; | |
| 621 } | |
| 622 #if 0 | |
| 623 if ( (flags&SDL_FULLSCREEN) != SDL_FULLSCREEN ) { | |
| 624 /* There's no windowed double-buffering */ | |
| 625 flags &= ~SDL_DOUBLEBUF; | |
| 626 } | |
| 627 #endif | |
| 628 if ( (flags&SDL_DOUBLEBUF) == SDL_DOUBLEBUF ) { | |
| 629 /* Use hardware surfaces when double-buffering */ | |
| 630 flags |= SDL_HWSURFACE; | |
| 631 } | |
| 632 | |
| 633 is_opengl = ( ( flags & SDL_OPENGL ) == SDL_OPENGL ); | |
| 634 if ( is_opengl ) { | |
| 635 /* These flags are for 2D video modes only */ | |
| 636 flags &= ~(SDL_HWSURFACE|SDL_DOUBLEBUF); | |
| 637 } | |
| 638 | |
|
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639 /* Reset the keyboard here so event callbacks can run */ |
|
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640 SDL_ResetKeyboard(); |
|
460
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641 SDL_ResetMouse(); |
| 4249 | 642 SDL_SetMouseRange(width, height); |
| 1296 | 643 SDL_cursorstate &= ~CURSOR_USINGSW; |
|
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644 |
| 0 | 645 /* Clean up any previous video mode */ |
| 646 if ( SDL_PublicSurface != NULL ) { | |
| 647 SDL_PublicSurface = NULL; | |
| 648 } | |
| 649 if ( SDL_ShadowSurface != NULL ) { | |
| 650 SDL_Surface *ready_to_go; | |
| 651 ready_to_go = SDL_ShadowSurface; | |
| 652 SDL_ShadowSurface = NULL; | |
| 653 SDL_FreeSurface(ready_to_go); | |
| 654 } | |
| 655 if ( video->physpal ) { | |
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656 SDL_free(video->physpal->colors); |
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657 SDL_free(video->physpal); |
| 0 | 658 video->physpal = NULL; |
| 659 } | |
| 660 if( video->gammacols) { | |
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661 SDL_free(video->gammacols); |
| 0 | 662 video->gammacols = NULL; |
| 663 } | |
| 664 | |
| 665 /* Save the previous grab state and turn off grab for mode switch */ | |
| 666 saved_grab = SDL_WM_GrabInputOff(); | |
| 667 | |
| 668 /* Try to set the video mode, along with offset and clipping */ | |
| 669 prev_mode = SDL_VideoSurface; | |
| 670 SDL_LockCursor(); | |
| 671 SDL_VideoSurface = NULL; /* In case it's freed by driver */ | |
| 672 mode = video->SetVideoMode(this, prev_mode,video_w,video_h,video_bpp,flags); | |
| 673 if ( mode ) { /* Prevent resize events from mode change */ | |
| 1190 | 674 /* But not on OS/2 */ |
| 675 #ifndef __OS2__ | |
| 0 | 676 SDL_PrivateResize(mode->w, mode->h); |
| 1190 | 677 #endif |
|
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678 |
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Fix a crash if an OpenGL video mode can't be set.
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679 /* Sam - If we asked for OpenGL mode, and didn't get it, fail */ |
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680 if ( is_opengl && !(mode->flags & SDL_OPENGL) ) { |
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681 mode = NULL; |
|
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682 SDL_SetError("OpenGL not available"); |
|
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683 } |
|
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684 } |
| 0 | 685 /* |
| 686 * rcg11292000 | |
| 687 * If you try to set an SDL_OPENGL surface, and fail to find a | |
| 688 * matching visual, then the next call to SDL_SetVideoMode() | |
| 689 * will segfault, since we no longer point to a dummy surface, | |
| 690 * but rather NULL. | |
| 691 * Sam 11/29/00 | |
| 692 * WARNING, we need to make sure that the previous mode hasn't | |
| 693 * already been freed by the video driver. What do we do in | |
| 694 * that case? Should we call SDL_VideoInit() again? | |
| 695 */ | |
| 696 SDL_VideoSurface = (mode != NULL) ? mode : prev_mode; | |
| 697 | |
| 698 if ( (mode != NULL) && (!is_opengl) ) { | |
| 699 /* Sanity check */ | |
| 700 if ( (mode->w < width) || (mode->h < height) ) { | |
| 701 SDL_SetError("Video mode smaller than requested"); | |
| 702 return(NULL); | |
| 703 } | |
| 704 | |
| 705 /* If we have a palettized surface, create a default palette */ | |
| 706 if ( mode->format->palette ) { | |
|
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707 SDL_PixelFormat *vf = mode->format; |
| 0 | 708 SDL_DitherColors(vf->palette->colors, vf->BitsPerPixel); |
| 709 video->SetColors(this, 0, vf->palette->ncolors, | |
| 710 vf->palette->colors); | |
| 711 } | |
| 712 | |
| 713 /* Clear the surface to black */ | |
| 714 video->offset_x = 0; | |
| 715 video->offset_y = 0; | |
| 716 mode->offset = 0; | |
| 717 SDL_SetClipRect(mode, NULL); | |
| 718 SDL_ClearSurface(mode); | |
| 719 | |
| 720 /* Now adjust the offsets to match the desired mode */ | |
| 721 video->offset_x = (mode->w-width)/2; | |
| 722 video->offset_y = (mode->h-height)/2; | |
| 723 mode->offset = video->offset_y*mode->pitch + | |
| 724 video->offset_x*mode->format->BytesPerPixel; | |
| 725 #ifdef DEBUG_VIDEO | |
| 726 fprintf(stderr, | |
| 727 "Requested mode: %dx%dx%d, obtained mode %dx%dx%d (offset %d)\n", | |
| 728 width, height, bpp, | |
| 729 mode->w, mode->h, mode->format->BitsPerPixel, mode->offset); | |
| 730 #endif | |
| 731 mode->w = width; | |
| 732 mode->h = height; | |
| 733 SDL_SetClipRect(mode, NULL); | |
| 734 } | |
| 735 SDL_ResetCursor(); | |
| 736 SDL_UnlockCursor(); | |
| 737 | |
| 738 /* If we failed setting a video mode, return NULL... (Uh Oh!) */ | |
| 739 if ( mode == NULL ) { | |
| 740 return(NULL); | |
| 741 } | |
| 742 | |
| 743 /* If there is no window manager, set the SDL_NOFRAME flag */ | |
| 744 if ( ! video->info.wm_available ) { | |
| 745 mode->flags |= SDL_NOFRAME; | |
| 746 } | |
| 747 | |
| 748 /* Reset the mouse cursor and grab for new video mode */ | |
| 749 SDL_SetCursor(NULL); | |
| 750 if ( video->UpdateMouse ) { | |
| 751 video->UpdateMouse(this); | |
| 752 } | |
| 753 SDL_WM_GrabInput(saved_grab); | |
| 754 SDL_GetRelativeMouseState(NULL, NULL); /* Clear first large delta */ | |
| 755 | |
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756 #if SDL_VIDEO_OPENGL |
|
650
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757 /* Load GL symbols (before MakeCurrent, where we need glGetString). */ |
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758 if ( flags & (SDL_OPENGL | SDL_OPENGLBLIT) ) { |
|
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759 |
|
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760 #if defined(__QNXNTO__) && (_NTO_VERSION < 630) |
|
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761 #define __SDL_NOGETPROCADDR__ |
|
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762 #elif defined(__MINT__) |
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763 #define __SDL_NOGETPROCADDR__ |
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764 #endif |
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765 #ifdef __SDL_NOGETPROCADDR__ |
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766 #define SDL_PROC(ret,func,params) video->func=func; |
|
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767 #else |
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768 #define SDL_PROC(ret,func,params) \ |
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769 do { \ |
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770 video->func = SDL_GL_GetProcAddress(#func); \ |
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771 if ( ! video->func ) { \ |
|
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772 SDL_SetError("Couldn't load GL function %s: %s\n", #func, SDL_GetError()); \ |
|
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773 return(NULL); \ |
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774 } \ |
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775 } while ( 0 ); |
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776 |
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777 #endif /* __SDL_NOGETPROCADDR__ */ |
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778 |
|
650
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779 #include "SDL_glfuncs.h" |
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780 #undef SDL_PROC |
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781 } |
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782 #endif /* SDL_VIDEO_OPENGL */ |
|
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783 |
| 0 | 784 /* If we're running OpenGL, make the context current */ |
| 785 if ( (video->screen->flags & SDL_OPENGL) && | |
| 786 video->GL_MakeCurrent ) { | |
| 787 if ( video->GL_MakeCurrent(this) < 0 ) { | |
| 788 return(NULL); | |
| 789 } | |
| 790 } | |
| 791 | |
| 792 /* Set up a fake SDL surface for OpenGL "blitting" */ | |
| 793 if ( (flags & SDL_OPENGLBLIT) == SDL_OPENGLBLIT ) { | |
| 794 /* Load GL functions for performing the texture updates */ | |
|
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795 #if SDL_VIDEO_OPENGL |
| 0 | 796 |
| 797 /* Create a software surface for blitting */ | |
| 798 #ifdef GL_VERSION_1_2 | |
| 799 /* If the implementation either supports the packed pixels | |
| 800 extension, or implements the core OpenGL 1.2 API, it will | |
| 801 support the GL_UNSIGNED_SHORT_5_6_5 texture format. | |
| 802 */ | |
| 803 if ( (bpp == 16) && | |
|
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|
804 (SDL_strstr((const char *)video->glGetString(GL_EXTENSIONS), "GL_EXT_packed_pixels") || |
|
1341
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Configure dynamically generates SDL_config.h
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805 (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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|
806 ) { |
| 0 | 807 video->is_32bit = 0; |
| 808 SDL_VideoSurface = SDL_CreateRGBSurface( | |
| 809 flags, | |
| 810 width, | |
| 811 height, | |
| 812 16, | |
| 813 31 << 11, | |
| 814 63 << 5, | |
| 815 31, | |
| 816 0 | |
| 817 ); | |
| 818 } | |
| 819 else | |
| 820 #endif /* OpenGL 1.2 */ | |
| 821 { | |
| 822 video->is_32bit = 1; | |
| 823 SDL_VideoSurface = SDL_CreateRGBSurface( | |
| 824 flags, | |
| 825 width, | |
| 826 height, | |
| 827 32, | |
| 828 #if SDL_BYTEORDER == SDL_LIL_ENDIAN | |
| 829 0x000000FF, | |
| 830 0x0000FF00, | |
| 831 0x00FF0000, | |
| 832 0xFF000000 | |
| 833 #else | |
| 834 0xFF000000, | |
| 835 0x00FF0000, | |
| 836 0x0000FF00, | |
| 837 0x000000FF | |
| 838 #endif | |
| 839 ); | |
| 840 } | |
| 841 if ( ! SDL_VideoSurface ) { | |
| 842 return(NULL); | |
| 843 } | |
| 844 SDL_VideoSurface->flags = mode->flags | SDL_OPENGLBLIT; | |
| 845 | |
| 846 /* Free the original video mode surface (is this safe?) */ | |
| 847 SDL_FreeSurface(mode); | |
| 848 | |
|
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|
849 /* Set the surface completely opaque & white by default */ |
|
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|
850 SDL_memset( SDL_VideoSurface->pixels, 255, SDL_VideoSurface->h * SDL_VideoSurface->pitch ); |
| 0 | 851 video->glGenTextures( 1, &video->texture ); |
| 852 video->glBindTexture( GL_TEXTURE_2D, video->texture ); | |
| 853 video->glTexImage2D( | |
| 854 GL_TEXTURE_2D, | |
| 855 0, | |
| 856 video->is_32bit ? GL_RGBA : GL_RGB, | |
| 857 256, | |
| 858 256, | |
| 859 0, | |
| 860 video->is_32bit ? GL_RGBA : GL_RGB, | |
| 861 #ifdef GL_VERSION_1_2 | |
| 862 video->is_32bit ? GL_UNSIGNED_BYTE : GL_UNSIGNED_SHORT_5_6_5, | |
| 863 #else | |
| 864 GL_UNSIGNED_BYTE, | |
| 865 #endif | |
| 866 NULL); | |
| 867 | |
| 868 video->UpdateRects = SDL_GL_UpdateRectsLock; | |
| 869 #else | |
|
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New configure-based build system. Still work in progress, but much improved
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|
870 SDL_SetError("Somebody forgot to #define SDL_VIDEO_OPENGL"); |
| 0 | 871 return(NULL); |
| 872 #endif | |
| 873 } | |
| 874 | |
| 875 /* Create a shadow surface if necessary */ | |
| 876 /* There are three conditions under which we create a shadow surface: | |
| 877 1. We need a particular bits-per-pixel that we didn't get. | |
| 878 2. We need a hardware palette and didn't get one. | |
| 879 3. We need a software surface and got a hardware surface. | |
| 880 */ | |
| 881 if ( !(SDL_VideoSurface->flags & SDL_OPENGL) && | |
| 882 ( | |
| 883 ( !(flags&SDL_ANYFORMAT) && | |
| 884 (SDL_VideoSurface->format->BitsPerPixel != bpp)) || | |
| 885 ( (flags&SDL_HWPALETTE) && | |
| 886 !(SDL_VideoSurface->flags&SDL_HWPALETTE)) || | |
| 887 /* If the surface is in hardware, video writes are visible | |
| 888 as soon as they are performed, so we need to buffer them | |
| 889 */ | |
| 890 ( ((flags&SDL_HWSURFACE) == SDL_SWSURFACE) && | |
|
580
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891 (SDL_VideoSurface->flags&SDL_HWSURFACE)) || |
|
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892 ( (flags&SDL_DOUBLEBUF) && |
|
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|
893 (SDL_VideoSurface->flags&SDL_HWSURFACE) && |
|
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894 !(SDL_VideoSurface->flags&SDL_DOUBLEBUF)) |
| 0 | 895 ) ) { |
| 896 SDL_CreateShadowSurface(bpp); | |
| 897 if ( SDL_ShadowSurface == NULL ) { | |
| 898 SDL_SetError("Couldn't create shadow surface"); | |
| 899 return(NULL); | |
| 900 } | |
| 901 SDL_PublicSurface = SDL_ShadowSurface; | |
| 902 } else { | |
| 903 SDL_PublicSurface = SDL_VideoSurface; | |
| 904 } | |
| 905 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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906 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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907 video->info.current_h = SDL_VideoSurface->h; |
| 0 | 908 |
| 909 /* We're done! */ | |
| 910 return(SDL_PublicSurface); | |
| 911 } | |
| 912 | |
| 913 /* | |
| 914 * Convert a surface into the video pixel format. | |
| 915 */ | |
| 916 SDL_Surface * SDL_DisplayFormat (SDL_Surface *surface) | |
| 917 { | |
| 918 Uint32 flags; | |
| 919 | |
| 920 if ( ! SDL_PublicSurface ) { | |
| 921 SDL_SetError("No video mode has been set"); | |
| 922 return(NULL); | |
| 923 } | |
| 924 /* Set the flags appropriate for copying to display surface */ | |
|
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*** empty log message ***
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925 if (((SDL_PublicSurface->flags&SDL_HWSURFACE) == SDL_HWSURFACE) && current_video->info.blit_hw) |
|
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926 flags = SDL_HWSURFACE; |
|
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927 else |
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928 flags = SDL_SWSURFACE; |
| 0 | 929 #ifdef AUTORLE_DISPLAYFORMAT |
| 930 flags |= (surface->flags & (SDL_SRCCOLORKEY|SDL_SRCALPHA)); | |
| 931 flags |= SDL_RLEACCELOK; | |
| 932 #else | |
| 933 flags |= surface->flags & (SDL_SRCCOLORKEY|SDL_SRCALPHA|SDL_RLEACCELOK); | |
| 934 #endif | |
| 935 return(SDL_ConvertSurface(surface, SDL_PublicSurface->format, flags)); | |
| 936 } | |
| 937 | |
| 938 /* | |
| 939 * Convert a surface into a format that's suitable for blitting to | |
| 940 * the screen, but including an alpha channel. | |
| 941 */ | |
| 942 SDL_Surface *SDL_DisplayFormatAlpha(SDL_Surface *surface) | |
| 943 { | |
| 944 SDL_PixelFormat *vf; | |
| 945 SDL_PixelFormat *format; | |
| 946 SDL_Surface *converted; | |
| 947 Uint32 flags; | |
| 948 /* default to ARGB8888 */ | |
| 949 Uint32 amask = 0xff000000; | |
| 950 Uint32 rmask = 0x00ff0000; | |
| 951 Uint32 gmask = 0x0000ff00; | |
| 952 Uint32 bmask = 0x000000ff; | |
| 953 | |
| 954 if ( ! SDL_PublicSurface ) { | |
| 955 SDL_SetError("No video mode has been set"); | |
| 956 return(NULL); | |
| 957 } | |
| 958 vf = SDL_PublicSurface->format; | |
| 959 | |
| 960 switch(vf->BytesPerPixel) { | |
| 961 case 2: | |
| 962 /* For XGY5[56]5, use, AXGY8888, where {X, Y} = {R, B}. | |
| 963 For anything else (like ARGB4444) it doesn't matter | |
| 964 since we have no special code for it anyway */ | |
| 965 if ( (vf->Rmask == 0x1f) && | |
| 966 (vf->Bmask == 0xf800 || vf->Bmask == 0x7c00)) { | |
| 967 rmask = 0xff; | |
| 968 bmask = 0xff0000; | |
| 969 } | |
| 970 break; | |
| 971 | |
| 972 case 3: | |
| 973 case 4: | |
| 974 /* Keep the video format, as long as the high 8 bits are | |
| 975 unused or alpha */ | |
| 976 if ( (vf->Rmask == 0xff) && (vf->Bmask == 0xff0000) ) { | |
| 977 rmask = 0xff; | |
| 978 bmask = 0xff0000; | |
| 979 } | |
| 980 break; | |
| 981 | |
| 982 default: | |
| 983 /* We have no other optimised formats right now. When/if a new | |
| 984 optimised alpha format is written, add the converter here */ | |
| 985 break; | |
| 986 } | |
| 987 format = SDL_AllocFormat(32, rmask, gmask, bmask, amask); | |
| 988 flags = SDL_PublicSurface->flags & SDL_HWSURFACE; | |
| 989 flags |= surface->flags & (SDL_SRCALPHA | SDL_RLEACCELOK); | |
| 990 converted = SDL_ConvertSurface(surface, format, flags); | |
| 991 SDL_FreeFormat(format); | |
| 992 return(converted); | |
| 993 } | |
| 994 | |
| 995 /* | |
| 996 * Update a specific portion of the physical screen | |
| 997 */ | |
| 998 void SDL_UpdateRect(SDL_Surface *screen, Sint32 x, Sint32 y, Uint32 w, Uint32 h) | |
| 999 { | |
| 1000 if ( screen ) { | |
| 1001 SDL_Rect rect; | |
| 1002 | |
| 1003 /* Perform some checking */ | |
| 1004 if ( w == 0 ) | |
| 1005 w = screen->w; | |
| 1006 if ( h == 0 ) | |
| 1007 h = screen->h; | |
| 1008 if ( (int)(x+w) > screen->w ) | |
| 1009 return; | |
| 1010 if ( (int)(y+h) > screen->h ) | |
| 1011 return; | |
| 1012 | |
| 1013 /* Fill the rectangle */ | |
|
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1014 rect.x = (Sint16)x; |
|
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1015 rect.y = (Sint16)y; |
|
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1016 rect.w = (Uint16)w; |
|
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1017 rect.h = (Uint16)h; |
| 0 | 1018 SDL_UpdateRects(screen, 1, &rect); |
| 1019 } | |
| 1020 } | |
| 1021 void SDL_UpdateRects (SDL_Surface *screen, int numrects, SDL_Rect *rects) | |
| 1022 { | |
| 1023 int i; | |
| 1024 SDL_VideoDevice *video = current_video; | |
| 1025 SDL_VideoDevice *this = current_video; | |
| 1026 | |
|
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1027 if ( (screen->flags & (SDL_OPENGL | SDL_OPENGLBLIT)) == SDL_OPENGL ) { |
|
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1028 SDL_SetError("OpenGL active, use SDL_GL_SwapBuffers()"); |
|
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1029 return; |
|
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1030 } |
| 0 | 1031 if ( screen == SDL_ShadowSurface ) { |
| 1032 /* Blit the shadow surface using saved mapping */ | |
|
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|
1033 SDL_Palette *pal = screen->format->palette; |
| 0 | 1034 SDL_Color *saved_colors = NULL; |
|
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1035 if ( pal && !(SDL_VideoSurface->flags & SDL_HWPALETTE) ) { |
| 0 | 1036 /* simulated 8bpp, use correct physical palette */ |
| 1037 saved_colors = pal->colors; | |
| 1038 if ( video->gammacols ) { | |
| 1039 /* gamma-corrected palette */ | |
| 1040 pal->colors = video->gammacols; | |
| 1041 } else if ( video->physpal ) { | |
| 1042 /* physical palette different from logical */ | |
| 1043 pal->colors = video->physpal->colors; | |
| 1044 } | |
| 1045 } | |
| 1046 if ( SHOULD_DRAWCURSOR(SDL_cursorstate) ) { | |
| 1047 SDL_LockCursor(); | |
| 1048 SDL_DrawCursor(SDL_ShadowSurface); | |
| 1049 for ( i=0; i<numrects; ++i ) { | |
| 1050 SDL_LowerBlit(SDL_ShadowSurface, &rects[i], | |
| 1051 SDL_VideoSurface, &rects[i]); | |
| 1052 } | |
| 1053 SDL_EraseCursor(SDL_ShadowSurface); | |
| 1054 SDL_UnlockCursor(); | |
| 1055 } else { | |
| 1056 for ( i=0; i<numrects; ++i ) { | |
| 1057 SDL_LowerBlit(SDL_ShadowSurface, &rects[i], | |
| 1058 SDL_VideoSurface, &rects[i]); | |
| 1059 } | |
| 1060 } | |
|
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1061 if ( saved_colors ) { |
| 0 | 1062 pal->colors = saved_colors; |
|
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|
1063 } |
| 0 | 1064 |
| 1065 /* Fall through to video surface update */ | |
| 1066 screen = SDL_VideoSurface; | |
| 1067 } | |
| 1068 if ( screen == SDL_VideoSurface ) { | |
| 1069 /* Update the video surface */ | |
| 1070 if ( screen->offset ) { | |
| 1071 for ( i=0; i<numrects; ++i ) { | |
| 1072 rects[i].x += video->offset_x; | |
| 1073 rects[i].y += video->offset_y; | |
| 1074 } | |
| 1075 video->UpdateRects(this, numrects, rects); | |
| 1076 for ( i=0; i<numrects; ++i ) { | |
| 1077 rects[i].x -= video->offset_x; | |
| 1078 rects[i].y -= video->offset_y; | |
| 1079 } | |
| 1080 } else { | |
| 1081 video->UpdateRects(this, numrects, rects); | |
| 1082 } | |
| 1083 } | |
| 1084 } | |
| 1085 | |
| 1086 /* | |
| 1087 * Performs hardware double buffering, if possible, or a full update if not. | |
| 1088 */ | |
| 1089 int SDL_Flip(SDL_Surface *screen) | |
| 1090 { | |
| 1091 SDL_VideoDevice *video = current_video; | |
| 1092 /* Copy the shadow surface to the video surface */ | |
| 1093 if ( screen == SDL_ShadowSurface ) { | |
| 1094 SDL_Rect rect; | |
|
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1095 SDL_Palette *pal = screen->format->palette; |
| 0 | 1096 SDL_Color *saved_colors = NULL; |
|
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|
1097 if ( pal && !(SDL_VideoSurface->flags & SDL_HWPALETTE) ) { |
| 0 | 1098 /* simulated 8bpp, use correct physical palette */ |
| 1099 saved_colors = pal->colors; | |
| 1100 if ( video->gammacols ) { | |
| 1101 /* gamma-corrected palette */ | |
| 1102 pal->colors = video->gammacols; | |
| 1103 } else if ( video->physpal ) { | |
| 1104 /* physical palette different from logical */ | |
| 1105 pal->colors = video->physpal->colors; | |
| 1106 } | |
| 1107 } | |
| 1108 | |
| 1109 rect.x = 0; | |
| 1110 rect.y = 0; | |
| 1111 rect.w = screen->w; | |
| 1112 rect.h = screen->h; | |
|
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1113 if ( SHOULD_DRAWCURSOR(SDL_cursorstate) ) { |
|
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1114 SDL_LockCursor(); |
|
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1115 SDL_DrawCursor(SDL_ShadowSurface); |
|
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1116 SDL_LowerBlit(SDL_ShadowSurface, &rect, |
|
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1117 SDL_VideoSurface, &rect); |
|
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1118 SDL_EraseCursor(SDL_ShadowSurface); |
|
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1119 SDL_UnlockCursor(); |
|
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1120 } else { |
|
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1121 SDL_LowerBlit(SDL_ShadowSurface, &rect, |
|
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1122 SDL_VideoSurface, &rect); |
|
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1123 } |
|
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1124 if ( saved_colors ) { |
|
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1125 pal->colors = saved_colors; |
|
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1126 } |
| 0 | 1127 |
|
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1128 /* Fall through to video surface update */ |
| 0 | 1129 screen = SDL_VideoSurface; |
| 1130 } | |
| 1131 if ( (screen->flags & SDL_DOUBLEBUF) == SDL_DOUBLEBUF ) { | |
| 1132 SDL_VideoDevice *this = current_video; | |
| 1133 return(video->FlipHWSurface(this, SDL_VideoSurface)); | |
| 1134 } else { | |
| 1135 SDL_UpdateRect(screen, 0, 0, 0, 0); | |
| 1136 } | |
| 1137 return(0); | |
| 1138 } | |
| 1139 | |
| 1140 static void SetPalette_logical(SDL_Surface *screen, SDL_Color *colors, | |
| 1141 int firstcolor, int ncolors) | |
| 1142 { | |
|
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1143 SDL_Palette *pal = screen->format->palette; |
| 0 | 1144 SDL_Palette *vidpal; |
| 1145 | |
| 1146 if ( colors != (pal->colors + firstcolor) ) { | |
|
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1147 SDL_memcpy(pal->colors + firstcolor, colors, |
| 0 | 1148 ncolors * sizeof(*colors)); |
| 1149 } | |
| 1150 | |
| 3995 | 1151 if ( current_video && SDL_VideoSurface ) { |
| 1152 vidpal = SDL_VideoSurface->format->palette; | |
| 1153 if ( (screen == SDL_ShadowSurface) && vidpal ) { | |
| 1154 /* | |
| 1155 * This is a shadow surface, and the physical | |
| 1156 * framebuffer is also indexed. Propagate the | |
| 1157 * changes to its logical palette so that | |
| 1158 * updates are always identity blits | |
| 1159 */ | |
| 1160 SDL_memcpy(vidpal->colors + firstcolor, colors, | |
| 1161 ncolors * sizeof(*colors)); | |
| 1162 } | |
| 0 | 1163 } |
| 1164 SDL_FormatChanged(screen); | |
| 1165 } | |
| 1166 | |
| 1167 static int SetPalette_physical(SDL_Surface *screen, | |
| 1168 SDL_Color *colors, int firstcolor, int ncolors) | |
| 1169 { | |
| 1170 SDL_VideoDevice *video = current_video; | |
| 1171 int gotall = 1; | |
| 1172 | |
| 1173 if ( video->physpal ) { | |
| 1174 /* We need to copy the new colors, since we haven't | |
| 1175 * already done the copy in the logical set above. | |
| 1176 */ | |
|
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|
1177 SDL_memcpy(video->physpal->colors + firstcolor, |
| 0 | 1178 colors, ncolors * sizeof(*colors)); |
| 1179 } | |
| 1180 if ( screen == SDL_ShadowSurface ) { | |
| 1181 if ( SDL_VideoSurface->flags & SDL_HWPALETTE ) { | |
| 1182 /* | |
| 1183 * The real screen is also indexed - set its physical | |
| 1184 * palette. The physical palette does not include the | |
| 1185 * gamma modification, we apply it directly instead, | |
| 1186 * but this only happens if we have hardware palette. | |
| 1187 */ | |
| 1188 screen = SDL_VideoSurface; | |
| 1189 } else { | |
| 1190 /* | |
| 1191 * The video surface is not indexed - invalidate any | |
| 1192 * active shadow-to-video blit mappings. | |
| 1193 */ | |
| 1194 if ( screen->map->dst == SDL_VideoSurface ) { | |
| 1195 SDL_InvalidateMap(screen->map); | |
| 1196 } | |
| 1197 if ( video->gamma ) { | |
| 1198 if( ! video->gammacols ) { | |
| 1199 SDL_Palette *pp = video->physpal; | |
| 1200 if(!pp) | |
| 1201 pp = screen->format->palette; | |
|
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|
1202 video->gammacols = SDL_malloc(pp->ncolors |
| 0 | 1203 * sizeof(SDL_Color)); |
| 1204 SDL_ApplyGamma(video->gamma, | |
| 1205 pp->colors, | |
| 1206 video->gammacols, | |
| 1207 pp->ncolors); | |
| 1208 } else { | |
| 1209 SDL_ApplyGamma(video->gamma, colors, | |
| 1210 video->gammacols | |
| 1211 + firstcolor, | |
| 1212 ncolors); | |
| 1213 } | |
| 1214 } | |
| 1215 SDL_UpdateRect(screen, 0, 0, 0, 0); | |
| 1216 } | |
| 1217 } | |
| 1218 | |
| 1219 if ( screen == SDL_VideoSurface ) { | |
| 1220 SDL_Color gcolors[256]; | |
| 1221 | |
|
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Date: Sun, 27 Jul 2003 22:37:59 +0200
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|
1222 if ( video->gamma ) { |
|
66c02f83f5bf
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diff
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|
1223 SDL_ApplyGamma(video->gamma, colors, gcolors, ncolors); |
| 0 | 1224 colors = gcolors; |
| 1225 } | |
| 1226 gotall = video->SetColors(video, firstcolor, ncolors, colors); | |
| 1227 if ( ! gotall ) { | |
| 1228 /* The video flags shouldn't have SDL_HWPALETTE, and | |
| 1229 the video driver is responsible for copying back the | |
| 1230 correct colors into the video surface palette. | |
| 1231 */ | |
| 1232 ; | |
| 1233 } | |
| 1234 SDL_CursorPaletteChanged(); | |
| 1235 } | |
| 1236 return gotall; | |
| 1237 } | |
| 1238 | |
| 1239 /* | |
| 1240 * Set the physical and/or logical colormap of a surface: | |
| 1241 * Only the screen has a physical colormap. It determines what is actually | |
| 1242 * sent to the display. | |
| 1243 * The logical colormap is used to map blits to/from the surface. | |
| 1244 * 'which' is one or both of SDL_LOGPAL, SDL_PHYSPAL | |
| 1245 * | |
| 1246 * Return nonzero if all colours were set as requested, or 0 otherwise. | |
| 1247 */ | |
| 1248 int SDL_SetPalette(SDL_Surface *screen, int which, | |
| 1249 SDL_Color *colors, int firstcolor, int ncolors) | |
| 1250 { | |
|
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|
1251 SDL_Palette *pal; |
| 0 | 1252 int gotall; |
| 1253 int palsize; | |
| 1254 | |
| 3995 | 1255 if ( !screen ) { |
| 34 | 1256 return 0; |
| 1257 } | |
| 3995 | 1258 if ( !current_video || screen != SDL_PublicSurface ) { |
|
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|
1259 /* only screens have physical palettes */ |
|
66c02f83f5bf
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|
1260 which &= ~SDL_PHYSPAL; |
| 3995 | 1261 } else if ( (screen->flags & SDL_HWPALETTE) != SDL_HWPALETTE ) { |
|
662
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|
1262 /* hardware palettes required for split colormaps */ |
|
66c02f83f5bf
Date: Sun, 27 Jul 2003 22:37:59 +0200
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|
1263 which |= SDL_PHYSPAL | SDL_LOGPAL; |
| 0 | 1264 } |
| 1265 | |
| 1266 /* Verify the parameters */ | |
| 1267 pal = screen->format->palette; | |
| 1268 if( !pal ) { | |
|
662
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Date: Sun, 27 Jul 2003 22:37:59 +0200
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|
1269 return 0; /* not a palettized surface */ |
| 0 | 1270 } |
| 1271 gotall = 1; | |
| 1272 palsize = 1 << screen->format->BitsPerPixel; | |
| 1273 if ( ncolors > (palsize - firstcolor) ) { | |
|
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|
1274 ncolors = (palsize - firstcolor); |
| 0 | 1275 gotall = 0; |
| 1276 } | |
| 1277 | |
| 1278 if ( which & SDL_LOGPAL ) { | |
| 1279 /* | |
| 1280 * Logical palette change: The actual screen isn't affected, | |
| 1281 * but the internal colormap is altered so that the | |
| 1282 * interpretation of the pixel values (for blits etc) is | |
| 1283 * changed. | |
| 1284 */ | |
|
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Date: Sun, 27 Jul 2003 22:37:59 +0200
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|
1285 SetPalette_logical(screen, colors, firstcolor, ncolors); |
| 0 | 1286 } |
| 1287 if ( which & SDL_PHYSPAL ) { | |
| 1288 SDL_VideoDevice *video = current_video; | |
|
662
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|
1289 /* |
| 0 | 1290 * Physical palette change: This doesn't affect the |
| 1291 * program's idea of what the screen looks like, but changes | |
| 1292 * its actual appearance. | |
| 1293 */ | |
| 3995 | 1294 if ( !video->physpal && !(which & SDL_LOGPAL) ) { |
| 0 | 1295 /* Lazy physical palette allocation */ |
|
662
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656
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changeset
|
1296 int size; |
|
1336
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|
1297 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
|
1298 if ( !pp ) { |
|
cdea7cbc3e23
Date: Wed, 28 Jul 2004 14:56:57 +0800
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|
1299 return 0; |
|
cdea7cbc3e23
Date: Wed, 28 Jul 2004 14:56:57 +0800
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parents:
916
diff
changeset
|
1300 } |
| 3995 | 1301 video->physpal = pp; |
| 0 | 1302 pp->ncolors = pal->ncolors; |
| 1303 size = pp->ncolors * sizeof(SDL_Color); | |
|
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Sam Lantinga <slouken@libsdl.org>
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1330
diff
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|
1304 pp->colors = SDL_malloc(size); |
|
944
cdea7cbc3e23
Date: Wed, 28 Jul 2004 14:56:57 +0800
Sam Lantinga <slouken@libsdl.org>
parents:
916
diff
changeset
|
1305 if ( !pp->colors ) { |
|
cdea7cbc3e23
Date: Wed, 28 Jul 2004 14:56:57 +0800
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parents:
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changeset
|
1306 return 0; |
|
cdea7cbc3e23
Date: Wed, 28 Jul 2004 14:56:57 +0800
Sam Lantinga <slouken@libsdl.org>
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diff
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|
1307 } |
|
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Sam Lantinga <slouken@libsdl.org>
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|
1308 SDL_memcpy(pp->colors, pal->colors, size); |
| 0 | 1309 } |
| 1310 if ( ! SetPalette_physical(screen, | |
| 1311 colors, firstcolor, ncolors) ) { | |
| 1312 gotall = 0; | |
| 1313 } | |
| 1314 } | |
| 1315 return gotall; | |
| 1316 } | |
| 1317 | |
| 1318 int SDL_SetColors(SDL_Surface *screen, SDL_Color *colors, int firstcolor, | |
| 1319 int ncolors) | |
| 1320 { | |
|
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|
1321 return SDL_SetPalette(screen, SDL_LOGPAL | SDL_PHYSPAL, |
| 0 | 1322 colors, firstcolor, ncolors); |
| 1323 } | |
| 1324 | |
| 1325 /* | |
| 1326 * Clean up the video subsystem | |
| 1327 */ | |
| 1328 void SDL_VideoQuit (void) | |
| 1329 { | |
| 1330 SDL_Surface *ready_to_go; | |
| 1331 | |
| 1332 if ( current_video ) { | |
| 1333 SDL_VideoDevice *video = current_video; | |
| 1334 SDL_VideoDevice *this = current_video; | |
| 1335 | |
| 1336 /* Halt event processing before doing anything else */ | |
| 1337 SDL_StopEventLoop(); | |
| 1338 | |
| 1339 /* Clean up allocated window manager items */ | |
| 1340 if ( SDL_PublicSurface ) { | |
| 1341 SDL_PublicSurface = NULL; | |
| 1342 } | |
| 1343 SDL_CursorQuit(); | |
| 1344 | |
| 1345 /* Just in case... */ | |
| 1346 SDL_WM_GrabInputOff(); | |
| 1347 | |
| 1348 /* Clean up the system video */ | |
| 1349 video->VideoQuit(this); | |
| 1350 | |
| 1351 /* Free any lingering surfaces */ | |
| 1352 ready_to_go = SDL_ShadowSurface; | |
| 1353 SDL_ShadowSurface = NULL; | |
| 1354 SDL_FreeSurface(ready_to_go); | |
| 1355 if ( SDL_VideoSurface != NULL ) { | |
| 1356 ready_to_go = SDL_VideoSurface; | |
| 1357 SDL_VideoSurface = NULL; | |
| 1358 SDL_FreeSurface(ready_to_go); | |
| 1359 } | |
| 1360 SDL_PublicSurface = NULL; | |
| 1361 | |
| 1362 /* Clean up miscellaneous memory */ | |
| 1363 if ( video->physpal ) { | |
|
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|
1364 SDL_free(video->physpal->colors); |
|
3692456e7b0f
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Sam Lantinga <slouken@libsdl.org>
parents:
1330
diff
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|
1365 SDL_free(video->physpal); |
| 0 | 1366 video->physpal = NULL; |
| 1367 } | |
| 1368 if ( video->gammacols ) { | |
|
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|
1369 SDL_free(video->gammacols); |
| 0 | 1370 video->gammacols = NULL; |
| 1371 } | |
| 1372 if ( video->gamma ) { | |
|
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|
1373 SDL_free(video->gamma); |
| 0 | 1374 video->gamma = NULL; |
| 1375 } | |
|
58
bd6b0a910a65
* Removed fullscreen menu option from the "Window" menu
Sam Lantinga <slouken@lokigames.com>
parents:
47
diff
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|
1376 if ( video->wm_title != NULL ) { |
|
1336
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Sam Lantinga <slouken@libsdl.org>
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diff
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|
1377 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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|
1378 video->wm_title = NULL; |
| 0 | 1379 } |
|
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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|
1380 if ( video->wm_icon != NULL ) { |
|
1336
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|
1381 SDL_free(video->wm_icon); |
|
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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|
1382 video->wm_icon = NULL; |
| 0 | 1383 } |
| 1384 | |
| 1385 /* Finish cleaning up video subsystem */ | |
| 1386 video->free(this); | |
| 1387 current_video = NULL; | |
| 1388 } | |
| 1389 return; | |
| 1390 } | |
| 1391 | |
| 1392 /* Load the GL driver library */ | |
| 1393 int SDL_GL_LoadLibrary(const char *path) | |
| 1394 { | |
| 1395 SDL_VideoDevice *video = current_video; | |
| 1396 SDL_VideoDevice *this = current_video; | |
| 1397 int retval; | |
| 1398 | |
| 1399 retval = -1; | |
|
423
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More correct error reported when calling SDL_GL_LoadLibrary() without
Ryan C. Gordon <icculus@icculus.org>
parents:
371
diff
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|
1400 if ( video == NULL ) { |
|
d1565c52ded5
More correct error reported when calling SDL_GL_LoadLibrary() without
Ryan C. Gordon <icculus@icculus.org>
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371
diff
changeset
|
1401 SDL_SetError("Video subsystem has not been initialized"); |
| 0 | 1402 } else { |
|
423
d1565c52ded5
More correct error reported when calling SDL_GL_LoadLibrary() without
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parents:
371
diff
changeset
|
1403 if ( video->GL_LoadLibrary ) { |
|
d1565c52ded5
More correct error reported when calling SDL_GL_LoadLibrary() without
Ryan C. Gordon <icculus@icculus.org>
parents:
371
diff
changeset
|
1404 retval = video->GL_LoadLibrary(this, path); |
|
d1565c52ded5
More correct error reported when calling SDL_GL_LoadLibrary() without
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changeset
|
1405 } else { |
|
d1565c52ded5
More correct error reported when calling SDL_GL_LoadLibrary() without
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diff
changeset
|
1406 SDL_SetError("No dynamic GL support in video driver"); |
|
d1565c52ded5
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parents:
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changeset
|
1407 } |
| 0 | 1408 } |
| 1409 return(retval); | |
| 1410 } | |
| 1411 | |
| 1412 void *SDL_GL_GetProcAddress(const char* proc) | |
| 1413 { | |
| 1414 SDL_VideoDevice *video = current_video; | |
| 1415 SDL_VideoDevice *this = current_video; | |
| 1416 void *func; | |
| 1417 | |
| 1418 func = NULL; | |
| 1419 if ( video->GL_GetProcAddress ) { | |
| 1420 if ( video->gl_config.driver_loaded ) { | |
| 1421 func = video->GL_GetProcAddress(this, proc); | |
| 1422 } else { | |
| 1423 SDL_SetError("No GL driver has been loaded"); | |
| 1424 } | |
| 1425 } else { | |
| 1426 SDL_SetError("No dynamic GL support in video driver"); | |
| 1427 } | |
| 1428 return func; | |
| 1429 } | |
| 1430 | |
| 1431 /* Set the specified GL attribute for setting up a GL video mode */ | |
| 1432 int SDL_GL_SetAttribute( SDL_GLattr attr, int value ) | |
| 1433 { | |
| 1434 int retval; | |
| 1435 SDL_VideoDevice *video = current_video; | |
| 1436 | |
| 1437 retval = 0; | |
| 1438 switch (attr) { | |
| 1439 case SDL_GL_RED_SIZE: | |
| 1440 video->gl_config.red_size = value; | |
| 1441 break; | |
| 1442 case SDL_GL_GREEN_SIZE: | |
| 1443 video->gl_config.green_size = value; | |
| 1444 break; | |
| 1445 case SDL_GL_BLUE_SIZE: | |
| 1446 video->gl_config.blue_size = value; | |
| 1447 break; | |
| 1448 case SDL_GL_ALPHA_SIZE: | |
| 1449 video->gl_config.alpha_size = value; | |
| 1450 break; | |
| 1451 case SDL_GL_DOUBLEBUFFER: | |
| 1452 video->gl_config.double_buffer = value; | |
| 1453 break; | |
|
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Date: Sun, 27 Jul 2003 22:37:59 +0200
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|
1454 case SDL_GL_BUFFER_SIZE: |
|
66c02f83f5bf
Date: Sun, 27 Jul 2003 22:37:59 +0200
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diff
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|
1455 video->gl_config.buffer_size = value; |
| 0 | 1456 break; |
| 1457 case SDL_GL_DEPTH_SIZE: | |
| 1458 video->gl_config.depth_size = value; | |
| 1459 break; | |
| 1460 case SDL_GL_STENCIL_SIZE: | |
| 1461 video->gl_config.stencil_size = value; | |
| 1462 break; | |
|
450
8a43e0cbf02f
Added SDL_GL_STEREO for stereoscopic OpenGL contexts
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433
diff
changeset
|
1463 case SDL_GL_ACCUM_RED_SIZE: |
| 0 | 1464 video->gl_config.accum_red_size = value; |
| 1465 break; | |
|
450
8a43e0cbf02f
Added SDL_GL_STEREO for stereoscopic OpenGL contexts
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diff
changeset
|
1466 case SDL_GL_ACCUM_GREEN_SIZE: |
| 0 | 1467 video->gl_config.accum_green_size = value; |
| 1468 break; | |
|
450
8a43e0cbf02f
Added SDL_GL_STEREO for stereoscopic OpenGL contexts
Sam Lantinga <slouken@libsdl.org>
parents:
433
diff
changeset
|
1469 case SDL_GL_ACCUM_BLUE_SIZE: |
| 0 | 1470 video->gl_config.accum_blue_size = value; |
| 1471 break; | |
|
450
8a43e0cbf02f
Added SDL_GL_STEREO for stereoscopic OpenGL contexts
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433
diff
changeset
|
1472 case SDL_GL_ACCUM_ALPHA_SIZE: |
| 0 | 1473 video->gl_config.accum_alpha_size = value; |
| 1474 break; | |
|
450
8a43e0cbf02f
Added SDL_GL_STEREO for stereoscopic OpenGL contexts
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433
diff
changeset
|
1475 case SDL_GL_STEREO: |
|
8a43e0cbf02f
Added SDL_GL_STEREO for stereoscopic OpenGL contexts
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diff
changeset
|
1476 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
|
1477 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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changeset
|
1478 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
|
1479 video->gl_config.multisamplebuffers = value; |
|
655
9c42ee1b7d77
Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents:
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diff
changeset
|
1480 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
|
1481 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
|
1482 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
|
1483 break; |
| 1737 | 1484 case SDL_GL_ACCELERATED_VISUAL: |
| 1485 video->gl_config.accelerated = value; | |
| 1486 break; | |
|
1736
3b2a92126f4d
Implemented bug #2, 117:
Sam Lantinga <slouken@libsdl.org>
parents:
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1487 case SDL_GL_SWAP_CONTROL: |
|
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1488 video->gl_config.swap_control = value; |
|
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1489 break; |
| 0 | 1490 default: |
| 1491 SDL_SetError("Unknown OpenGL attribute"); | |
| 1492 retval = -1; | |
| 1493 break; | |
| 1494 } | |
| 1495 return(retval); | |
| 1496 } | |
| 1497 | |
| 1498 /* Retrieve an attribute value from the windowing system. */ | |
| 1499 int SDL_GL_GetAttribute(SDL_GLattr attr, int* value) | |
| 1500 { | |
| 1501 int retval = -1; | |
| 1502 SDL_VideoDevice* video = current_video; | |
| 1503 SDL_VideoDevice* this = current_video; | |
| 1504 | |
| 1505 if ( video->GL_GetAttribute ) { | |
| 1506 retval = this->GL_GetAttribute(this, attr, value); | |
|
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1507 } else { |
|
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1508 *value = 0; |
|
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|
1509 SDL_SetError("GL_GetAttribute not supported"); |
| 0 | 1510 } |
| 1511 return retval; | |
| 1512 } | |
| 1513 | |
| 1514 /* Perform a GL buffer swap on the current GL context */ | |
| 1515 void SDL_GL_SwapBuffers(void) | |
| 1516 { | |
| 1517 SDL_VideoDevice *video = current_video; | |
| 1518 SDL_VideoDevice *this = current_video; | |
| 1519 | |
| 1520 if ( video->screen->flags & SDL_OPENGL ) { | |
|
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1521 video->GL_SwapBuffers(this); |
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1522 } else { |
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1523 SDL_SetError("OpenGL video mode has not been set"); |
| 0 | 1524 } |
| 1525 } | |
| 1526 | |
| 1527 /* Update rects with locking */ | |
| 1528 void SDL_GL_UpdateRectsLock(SDL_VideoDevice* this, int numrects, SDL_Rect *rects) | |
| 1529 { | |
| 1530 SDL_GL_Lock(); | |
| 1531 SDL_GL_UpdateRects(numrects, rects); | |
| 1532 SDL_GL_Unlock(); | |
| 1533 } | |
| 1534 | |
| 1535 /* Update rects without state setting and changing (the caller is responsible for it) */ | |
| 1536 void SDL_GL_UpdateRects(int numrects, SDL_Rect *rects) | |
| 1537 { | |
|
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1538 #if SDL_VIDEO_OPENGL |
| 0 | 1539 SDL_VideoDevice *this = current_video; |
| 1540 SDL_Rect update, tmp; | |
| 1541 int x, y, i; | |
| 1542 | |
| 1543 for ( i = 0; i < numrects; i++ ) | |
| 1544 { | |
| 1545 tmp.y = rects[i].y; | |
| 1546 tmp.h = rects[i].h; | |
| 1547 for ( y = 0; y <= rects[i].h / 256; y++ ) | |
| 1548 { | |
| 1549 tmp.x = rects[i].x; | |
| 1550 tmp.w = rects[i].w; | |
| 1551 for ( x = 0; x <= rects[i].w / 256; x++ ) | |
| 1552 { | |
| 1553 update.x = tmp.x; | |
| 1554 update.y = tmp.y; | |
| 1555 update.w = tmp.w; | |
| 1556 update.h = tmp.h; | |
| 1557 | |
| 1558 if ( update.w > 256 ) | |
| 1559 update.w = 256; | |
| 1560 | |
| 1561 if ( update.h > 256 ) | |
| 1562 update.h = 256; | |
| 1563 | |
| 1564 this->glFlush(); | |
| 1565 this->glTexSubImage2D( | |
| 1566 GL_TEXTURE_2D, | |
| 1567 0, | |
| 1568 0, | |
| 1569 0, | |
| 1570 update.w, | |
| 1571 update.h, | |
| 1572 this->is_32bit? GL_RGBA : GL_RGB, | |
| 1573 #ifdef GL_VERSION_1_2 | |
| 1574 this->is_32bit ? GL_UNSIGNED_BYTE : GL_UNSIGNED_SHORT_5_6_5, | |
| 1575 #else | |
| 1576 GL_UNSIGNED_BYTE, | |
| 1577 #endif | |
| 1578 (Uint8 *)this->screen->pixels + | |
| 1579 this->screen->format->BytesPerPixel * update.x + | |
| 1580 update.y * this->screen->pitch ); | |
| 1581 | |
| 1582 this->glFlush(); | |
| 1583 /* | |
| 1584 * Note the parens around the function name: | |
| 1585 * This is because some OpenGL implementations define glTexCoord etc | |
| 1586 * as macros, and we don't want them expanded here. | |
| 1587 */ | |
| 1588 this->glBegin(GL_TRIANGLE_STRIP); | |
| 1589 (this->glTexCoord2f)( 0.0, 0.0 ); | |
| 1590 (this->glVertex2i)( update.x, update.y ); | |
| 1591 (this->glTexCoord2f)( (float)(update.w / 256.0), 0.0 ); | |
| 1592 (this->glVertex2i)( update.x + update.w, update.y ); | |
| 1593 (this->glTexCoord2f)( 0.0, (float)(update.h / 256.0) ); | |
| 1594 (this->glVertex2i)( update.x, update.y + update.h ); | |
| 1595 (this->glTexCoord2f)( (float)(update.w / 256.0), (float)(update.h / 256.0) ); | |
| 1596 (this->glVertex2i)( update.x + update.w , update.y + update.h ); | |
| 1597 this->glEnd(); | |
| 1598 | |
| 1599 tmp.x += 256; | |
| 1600 tmp.w -= 256; | |
| 1601 } | |
| 1602 tmp.y += 256; | |
| 1603 tmp.h -= 256; | |
| 1604 } | |
| 1605 } | |
| 1606 #endif | |
| 1607 } | |
| 1608 | |
| 1609 /* Lock == save current state */ | |
| 1610 void SDL_GL_Lock() | |
| 1611 { | |
|
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1612 #if SDL_VIDEO_OPENGL |
| 0 | 1613 lock_count--; |
| 1614 if (lock_count==-1) | |
| 1615 { | |
| 1616 SDL_VideoDevice *this = current_video; | |
| 1617 | |
| 1618 this->glPushAttrib( GL_ALL_ATTRIB_BITS ); /* TODO: narrow range of what is saved */ | |
|
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1619 #ifdef GL_CLIENT_PIXEL_STORE_BIT |
| 0 | 1620 this->glPushClientAttrib( GL_CLIENT_PIXEL_STORE_BIT ); |
|
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1621 #endif |
| 0 | 1622 |
| 1623 this->glEnable(GL_TEXTURE_2D); | |
| 1624 this->glEnable(GL_BLEND); | |
| 1625 this->glDisable(GL_FOG); | |
| 1626 this->glDisable(GL_ALPHA_TEST); | |
| 1627 this->glDisable(GL_DEPTH_TEST); | |
| 1628 this->glDisable(GL_SCISSOR_TEST); | |
| 1629 this->glDisable(GL_STENCIL_TEST); | |
| 1630 this->glDisable(GL_CULL_FACE); | |
| 1631 | |
| 1632 this->glBindTexture( GL_TEXTURE_2D, this->texture ); | |
| 1633 this->glTexEnvf( GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE ); | |
| 1634 this->glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST ); | |
| 1635 this->glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST ); | |
| 1636 this->glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT ); | |
| 1637 this->glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT ); | |
| 1638 | |
| 1639 this->glPixelStorei( GL_UNPACK_ROW_LENGTH, this->screen->pitch / this->screen->format->BytesPerPixel ); | |
| 1640 this->glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA); | |
| 1641 (this->glColor4f)(1.0, 1.0, 1.0, 1.0); /* Solaris workaround */ | |
| 1642 | |
| 1643 this->glViewport(0, 0, this->screen->w, this->screen->h); | |
| 1644 this->glMatrixMode(GL_PROJECTION); | |
| 1645 this->glPushMatrix(); | |
| 1646 this->glLoadIdentity(); | |
| 1647 | |
| 1648 this->glOrtho(0.0, (GLdouble) this->screen->w, (GLdouble) this->screen->h, 0.0, 0.0, 1.0); | |
| 1649 | |
| 1650 this->glMatrixMode(GL_MODELVIEW); | |
| 1651 this->glPushMatrix(); | |
| 1652 this->glLoadIdentity(); | |
| 1653 } | |
| 1654 #endif | |
| 1655 } | |
| 1656 | |
| 1657 /* Unlock == restore saved state */ | |
| 1658 void SDL_GL_Unlock() | |
| 1659 { | |
|
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1660 #if SDL_VIDEO_OPENGL |
| 0 | 1661 lock_count++; |
| 1662 if (lock_count==0) | |
| 1663 { | |
| 1664 SDL_VideoDevice *this = current_video; | |
| 1665 | |
| 1666 this->glPopMatrix(); | |
| 1667 this->glMatrixMode(GL_PROJECTION); | |
| 1668 this->glPopMatrix(); | |
| 1669 | |
| 1670 this->glPopClientAttrib(); | |
| 1671 this->glPopAttrib(); | |
| 1672 } | |
| 1673 #endif | |
| 1674 } | |
| 1675 | |
| 1676 /* | |
| 1677 * Sets/Gets the title and icon text of the display window, if any. | |
| 1678 */ | |
| 1679 void SDL_WM_SetCaption (const char *title, const char *icon) | |
| 1680 { | |
| 1681 SDL_VideoDevice *video = current_video; | |
| 1682 SDL_VideoDevice *this = current_video; | |
| 1683 | |
|
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1684 if ( video ) { |
|
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1685 if ( title ) { |
|
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1686 if ( video->wm_title ) { |
|
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1687 SDL_free(video->wm_title); |
|
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1688 } |
|
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|
1689 video->wm_title = SDL_strdup(title); |
| 0 | 1690 } |
|
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1691 if ( icon ) { |
|
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1692 if ( video->wm_icon ) { |
|
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1693 SDL_free(video->wm_icon); |
|
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1694 } |
|
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|
1695 video->wm_icon = SDL_strdup(icon); |
| 0 | 1696 } |
|
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1697 if ( (title || icon) && (video->SetCaption != NULL) ) { |
|
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|
1698 video->SetCaption(this, video->wm_title,video->wm_icon); |
| 0 | 1699 } |
| 1700 } | |
| 1701 } | |
| 1702 void SDL_WM_GetCaption (char **title, char **icon) | |
| 1703 { | |
|
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|
1704 SDL_VideoDevice *video = current_video; |
|
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1705 |
|
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|
1706 if ( video ) { |
|
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1707 if ( title ) { |
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|
1708 *title = video->wm_title; |
|
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|
1709 } |
|
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1710 if ( icon ) { |
|
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|
1711 *icon = video->wm_icon; |
|
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1712 } |
| 0 | 1713 } |
| 1714 } | |
| 1715 | |
|
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|
1716 /* Utility function used by SDL_WM_SetIcon(); |
|
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1717 * flags & 1 for color key, flags & 2 for alpha channel. */ |
|
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1718 static void CreateMaskFromColorKeyOrAlpha(SDL_Surface *icon, Uint8 *mask, int flags) |
| 0 | 1719 { |
| 1720 int x, y; | |
| 1721 Uint32 colorkey; | |
| 1722 #define SET_MASKBIT(icon, x, y, mask) \ | |
| 1723 mask[(y*((icon->w+7)/8))+(x/8)] &= ~(0x01<<(7-(x%8))) | |
| 1724 | |
| 1725 colorkey = icon->format->colorkey; | |
| 1726 switch (icon->format->BytesPerPixel) { | |
| 1727 case 1: { Uint8 *pixels; | |
| 1728 for ( y=0; y<icon->h; ++y ) { | |
| 1729 pixels = (Uint8 *)icon->pixels + y*icon->pitch; | |
| 1730 for ( x=0; x<icon->w; ++x ) { | |
| 1731 if ( *pixels++ == colorkey ) { | |
| 1732 SET_MASKBIT(icon, x, y, mask); | |
| 1733 } | |
| 1734 } | |
| 1735 } | |
| 1736 } | |
| 1737 break; | |
| 1738 | |
| 1739 case 2: { Uint16 *pixels; | |
| 1740 for ( y=0; y<icon->h; ++y ) { | |
| 1741 pixels = (Uint16 *)icon->pixels + | |
| 1742 y*icon->pitch/2; | |
| 1743 for ( x=0; x<icon->w; ++x ) { | |
|
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1744 if ( (flags & 1) && *pixels == colorkey ) { |
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1745 SET_MASKBIT(icon, x, y, mask); |
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1746 } else if((flags & 2) && (*pixels & icon->format->Amask) == 0) { |
| 0 | 1747 SET_MASKBIT(icon, x, y, mask); |
| 1748 } | |
|
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|
1749 pixels++; |
| 0 | 1750 } |
| 1751 } | |
| 1752 } | |
| 1753 break; | |
| 1754 | |
| 1755 case 4: { Uint32 *pixels; | |
| 1756 for ( y=0; y<icon->h; ++y ) { | |
| 1757 pixels = (Uint32 *)icon->pixels + | |
| 1758 y*icon->pitch/4; | |
| 1759 for ( x=0; x<icon->w; ++x ) { | |
|
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1760 if ( (flags & 1) && *pixels == colorkey ) { |
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1761 SET_MASKBIT(icon, x, y, mask); |
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1762 } else if((flags & 2) && (*pixels & icon->format->Amask) == 0) { |
| 0 | 1763 SET_MASKBIT(icon, x, y, mask); |
| 1764 } | |
|
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1765 pixels++; |
| 0 | 1766 } |
| 1767 } | |
| 1768 } | |
| 1769 break; | |
| 1770 } | |
| 1771 } | |
| 1772 | |
| 1773 /* | |
| 1774 * Sets the window manager icon for the display window. | |
| 1775 */ | |
| 1776 void SDL_WM_SetIcon (SDL_Surface *icon, Uint8 *mask) | |
| 1777 { | |
| 1778 SDL_VideoDevice *video = current_video; | |
| 1779 SDL_VideoDevice *this = current_video; | |
| 1780 | |
| 1781 if ( icon && video->SetIcon ) { | |
| 1782 /* Generate a mask if necessary, and create the icon! */ | |
| 1783 if ( mask == NULL ) { | |
| 1784 int mask_len = icon->h*(icon->w+7)/8; | |
|
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|
1785 int flags = 0; |
|
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1786 mask = (Uint8 *)SDL_malloc(mask_len); |
| 0 | 1787 if ( mask == NULL ) { |
| 1788 return; | |
| 1789 } | |
|
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|
1790 SDL_memset(mask, ~0, mask_len); |
|
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|
1791 if ( icon->flags & SDL_SRCCOLORKEY ) flags |= 1; |
|
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|
1792 if ( icon->flags & SDL_SRCALPHA ) flags |= 2; |
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|
1793 if( flags ) { |
|
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|
1794 CreateMaskFromColorKeyOrAlpha(icon, mask, flags); |
| 0 | 1795 } |
| 1796 video->SetIcon(video, icon, mask); | |
|
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1797 SDL_free(mask); |
| 0 | 1798 } else { |
| 1799 video->SetIcon(this, icon, mask); | |
| 1800 } | |
| 1801 } | |
| 1802 } | |
| 1803 | |
| 1804 /* | |
| 1805 * Grab or ungrab the keyboard and mouse input. | |
| 1806 * This function returns the final grab mode after calling the | |
| 1807 * driver dependent function. | |
| 1808 */ | |
| 1809 static SDL_GrabMode SDL_WM_GrabInputRaw(SDL_GrabMode mode) | |
| 1810 { | |
| 1811 SDL_VideoDevice *video = current_video; | |
| 1812 SDL_VideoDevice *this = current_video; | |
| 1813 | |
| 1814 /* Only do something if we have support for grabs */ | |
| 1815 if ( video->GrabInput == NULL ) { | |
| 1816 return(video->input_grab); | |
| 1817 } | |
| 1818 | |
| 1819 /* If the final grab mode if off, only then do we actually grab */ | |
| 1820 #ifdef DEBUG_GRAB | |
| 1821 printf("SDL_WM_GrabInputRaw(%d) ... ", mode); | |
| 1822 #endif | |
| 1823 if ( mode == SDL_GRAB_OFF ) { | |
| 1824 if ( video->input_grab != SDL_GRAB_OFF ) { | |
| 1825 mode = video->GrabInput(this, mode); | |
| 1826 } | |
| 1827 } else { | |
| 1828 if ( video->input_grab == SDL_GRAB_OFF ) { | |
| 1829 mode = video->GrabInput(this, mode); | |
| 1830 } | |
| 1831 } | |
| 1832 if ( mode != video->input_grab ) { | |
| 1833 video->input_grab = mode; | |
| 1834 if ( video->CheckMouseMode ) { | |
| 1835 video->CheckMouseMode(this); | |
| 1836 } | |
| 1837 } | |
| 1838 #ifdef DEBUG_GRAB | |
| 1839 printf("Final mode %d\n", video->input_grab); | |
| 1840 #endif | |
| 1841 | |
| 1842 /* Return the final grab state */ | |
| 1843 if ( mode >= SDL_GRAB_FULLSCREEN ) { | |
| 1844 mode -= SDL_GRAB_FULLSCREEN; | |
| 1845 } | |
| 1846 return(mode); | |
| 1847 } | |
| 1848 SDL_GrabMode SDL_WM_GrabInput(SDL_GrabMode mode) | |
| 1849 { | |
| 1850 SDL_VideoDevice *video = current_video; | |
| 1851 | |
|
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1852 /* If the video isn't initialized yet, we can't do anything */ |
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1853 if ( ! video ) { |
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1854 return SDL_GRAB_OFF; |
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1855 } |
| 0 | 1856 |
| 1857 /* Return the current mode on query */ | |
| 1858 if ( mode == SDL_GRAB_QUERY ) { | |
| 1859 mode = video->input_grab; | |
| 1860 if ( mode >= SDL_GRAB_FULLSCREEN ) { | |
| 1861 mode -= SDL_GRAB_FULLSCREEN; | |
| 1862 } | |
| 1863 return(mode); | |
| 1864 } | |
| 1865 | |
| 1866 #ifdef DEBUG_GRAB | |
| 1867 printf("SDL_WM_GrabInput(%d) ... ", mode); | |
| 1868 #endif | |
| 1869 /* If the video surface is fullscreen, we always grab */ | |
| 1870 if ( mode >= SDL_GRAB_FULLSCREEN ) { | |
| 1871 mode -= SDL_GRAB_FULLSCREEN; | |
| 1872 } | |
| 1873 if ( SDL_VideoSurface && (SDL_VideoSurface->flags & SDL_FULLSCREEN) ) { | |
| 1874 mode += SDL_GRAB_FULLSCREEN; | |
| 1875 } | |
| 1876 return(SDL_WM_GrabInputRaw(mode)); | |
| 1877 } | |
| 1878 static SDL_GrabMode SDL_WM_GrabInputOff(void) | |
| 1879 { | |
| 1880 SDL_GrabMode mode; | |
| 1881 | |
| 1882 /* First query the current grab state */ | |
| 1883 mode = SDL_WM_GrabInput(SDL_GRAB_QUERY); | |
| 1884 | |
| 1885 /* Now explicitly turn off input grab */ | |
| 1886 SDL_WM_GrabInputRaw(SDL_GRAB_OFF); | |
| 1887 | |
| 1888 /* Return the old state */ | |
| 1889 return(mode); | |
| 1890 } | |
| 1891 | |
| 1892 /* | |
| 1893 * Iconify the window in window managed environments. | |
| 1894 * A successful iconification will result in an SDL_APPACTIVE loss event. | |
| 1895 */ | |
| 1896 int SDL_WM_IconifyWindow(void) | |
| 1897 { | |
| 1898 SDL_VideoDevice *video = current_video; | |
| 1899 SDL_VideoDevice *this = current_video; | |
| 1900 int retval; | |
| 1901 | |
| 1902 retval = 0; | |
| 1903 if ( video->IconifyWindow ) { | |
| 1904 retval = video->IconifyWindow(this); | |
| 1905 } | |
| 1906 return(retval); | |
| 1907 } | |
| 1908 | |
| 1909 /* | |
| 1910 * Toggle fullscreen mode | |
| 1911 */ | |
| 1912 int SDL_WM_ToggleFullScreen(SDL_Surface *surface) | |
| 1913 { | |
| 1914 SDL_VideoDevice *video = current_video; | |
| 1915 SDL_VideoDevice *this = current_video; | |
| 1916 int toggled; | |
| 1917 | |
| 1918 toggled = 0; | |
| 1919 if ( SDL_PublicSurface && (surface == SDL_PublicSurface) && | |
| 1920 video->ToggleFullScreen ) { | |
| 1921 if ( surface->flags & SDL_FULLSCREEN ) { | |
| 1922 toggled = video->ToggleFullScreen(this, 0); | |
| 1923 if ( toggled ) { | |
| 1924 SDL_VideoSurface->flags &= ~SDL_FULLSCREEN; | |
| 1925 SDL_PublicSurface->flags &= ~SDL_FULLSCREEN; | |
| 1926 } | |
| 1927 } else { | |
| 1928 toggled = video->ToggleFullScreen(this, 1); | |
| 1929 if ( toggled ) { | |
| 1930 SDL_VideoSurface->flags |= SDL_FULLSCREEN; | |
| 1931 SDL_PublicSurface->flags |= SDL_FULLSCREEN; | |
| 1932 } | |
| 1933 } | |
| 1934 /* Double-check the grab state inside SDL_WM_GrabInput() */ | |
| 1935 if ( toggled ) { | |
| 1936 SDL_WM_GrabInput(video->input_grab); | |
| 1937 } | |
| 1938 } | |
| 1939 return(toggled); | |
| 1940 } | |
| 1941 | |
| 1942 /* | |
| 1943 * Get some platform dependent window manager information | |
| 1944 */ | |
| 1945 int SDL_GetWMInfo (SDL_SysWMinfo *info) | |
| 1946 { | |
| 1947 SDL_VideoDevice *video = current_video; | |
| 1948 SDL_VideoDevice *this = current_video; | |
| 1949 | |
| 1950 if ( video && video->GetWMInfo ) { | |
| 1951 return(video->GetWMInfo(this, info)); | |
| 1952 } else { | |
| 1953 return(0); | |
| 1954 } | |
| 1955 } |