Mercurial > sdl-ios-xcode
annotate src/video/SDL_video.c @ 229:4d24d5a660a8
Fix a crash if an OpenGL video mode can't be set.
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Sun, 04 Nov 2001 04:18:27 +0000 |
| parents | e2a10730ae94 |
| children | e8157fcb3114 |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 2 SDL - Simple DirectMedia Layer | |
| 3 Copyright (C) 1997, 1998, 1999, 2000, 2001 Sam Lantinga | |
| 4 | |
| 5 This library is free software; you can redistribute it and/or | |
| 6 modify it under the terms of the GNU Library General Public | |
| 7 License as published by the Free Software Foundation; either | |
| 8 version 2 of the License, or (at your option) any later version. | |
| 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 | |
| 13 Library General Public License for more details. | |
| 14 | |
| 15 You should have received a copy of the GNU Library General Public | |
| 16 License along with this library; if not, write to the Free | |
| 17 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
| 18 | |
| 19 Sam Lantinga | |
| 20 slouken@devolution.com | |
| 21 */ | |
| 22 | |
| 23 #ifdef SAVE_RCSID | |
| 24 static char rcsid = | |
| 25 "@(#) $Id$"; | |
| 26 #endif | |
| 27 | |
| 28 /* The high-level video driver subsystem */ | |
| 29 | |
| 30 #include <stdio.h> | |
| 31 #include <stdlib.h> | |
| 32 #include <string.h> | |
| 33 | |
| 34 #include "SDL.h" | |
| 35 #include "SDL_error.h" | |
| 36 #include "SDL_video.h" | |
| 37 #include "SDL_events.h" | |
| 38 #include "SDL_mutex.h" | |
| 39 #include "SDL_sysvideo.h" | |
| 40 #include "SDL_sysevents.h" | |
| 41 #include "SDL_blit.h" | |
| 42 #include "SDL_pixels_c.h" | |
| 43 #include "SDL_events_c.h" | |
| 44 #include "SDL_cursor_c.h" | |
| 45 | |
| 46 /* Available video drivers */ | |
| 47 static VideoBootStrap *bootstrap[] = { | |
| 48 #ifdef ENABLE_X11 | |
| 49 &X11_bootstrap, | |
| 50 #endif | |
| 51 #ifdef ENABLE_DGA | |
| 52 &DGA_bootstrap, | |
| 53 #endif | |
|
30
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54 #ifdef ENABLE_NANOX |
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55 &NX_bootstrap, |
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56 #endif |
| 0 | 57 #ifdef ENABLE_FBCON |
| 58 &FBCON_bootstrap, | |
| 59 #endif | |
|
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60 #ifdef ENABLE_DIRECTFB |
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61 &DirectFB_bootstrap, |
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62 #endif |
| 0 | 63 #ifdef ENABLE_PS2GS |
| 64 &PS2GS_bootstrap, | |
| 65 #endif | |
| 66 #ifdef ENABLE_GGI | |
| 67 &GGI_bootstrap, | |
| 68 #endif | |
|
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69 #ifdef ENABLE_VGL |
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70 &VGL_bootstrap, |
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71 #endif |
| 0 | 72 #ifdef ENABLE_SVGALIB |
| 73 &SVGALIB_bootstrap, | |
| 74 #endif | |
| 75 #ifdef ENABLE_AALIB | |
| 76 &AALIB_bootstrap, | |
| 77 #endif | |
| 78 #ifdef ENABLE_DIRECTX | |
| 79 &DIRECTX_bootstrap, | |
| 80 #endif | |
| 81 #ifdef ENABLE_WINDIB | |
| 82 &WINDIB_bootstrap, | |
| 83 #endif | |
| 84 #ifdef ENABLE_BWINDOW | |
| 85 &BWINDOW_bootstrap, | |
| 86 #endif | |
| 87 #ifdef ENABLE_TOOLBOX | |
| 88 &TOOLBOX_bootstrap, | |
| 89 #endif | |
| 90 #ifdef ENABLE_DRAWSPROCKET | |
| 91 &DSp_bootstrap, | |
| 92 #endif | |
|
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93 #ifdef ENABLE_QUARTZ |
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94 &QZ_bootstrap, |
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95 #endif |
| 0 | 96 #ifdef ENABLE_CYBERGRAPHICS |
| 97 &CGX_bootstrap, | |
| 98 #endif | |
|
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99 #ifdef ENABLE_PHOTON |
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100 &ph_bootstrap, |
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101 #endif |
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102 #ifdef ENABLE_EPOC |
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103 &EPOC_bootstrap, |
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104 #endif |
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105 #ifdef ENABLE_DUMMYVIDEO |
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106 &DUMMY_bootstrap, |
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107 #endif |
| 0 | 108 NULL |
| 109 }; | |
|
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110 |
| 0 | 111 SDL_VideoDevice *current_video = NULL; |
| 112 | |
| 113 /* Various local functions */ | |
| 114 int SDL_VideoInit(const char *driver_name, Uint32 flags); | |
| 115 void SDL_VideoQuit(void); | |
| 116 void SDL_GL_UpdateRectsLock(SDL_VideoDevice* this, int numrects, SDL_Rect* rects); | |
| 117 | |
| 118 static SDL_GrabMode SDL_WM_GrabInputOff(void); | |
| 119 #ifdef HAVE_OPENGL | |
| 120 static int lock_count = 0; | |
| 121 #endif | |
| 122 | |
| 123 | |
| 124 /* | |
| 125 * Initialize the video and event subsystems -- determine native pixel format | |
| 126 */ | |
| 127 int SDL_VideoInit (const char *driver_name, Uint32 flags) | |
| 128 { | |
| 129 SDL_VideoDevice *video; | |
| 130 int index; | |
| 131 int i; | |
| 132 SDL_PixelFormat vformat; | |
| 133 Uint32 video_flags; | |
| 134 | |
| 135 /* Toggle the event thread flags, based on OS requirements */ | |
| 136 #if defined(MUST_THREAD_EVENTS) | |
| 137 flags |= SDL_INIT_EVENTTHREAD; | |
| 138 #elif defined(CANT_THREAD_EVENTS) | |
| 139 if ( (flags & SDL_INIT_EVENTTHREAD) == SDL_INIT_EVENTTHREAD ) { | |
| 140 SDL_SetError("OS doesn't support threaded events"); | |
| 141 return(-1); | |
| 142 } | |
| 143 #endif | |
| 144 | |
| 145 /* Check to make sure we don't overwrite 'current_video' */ | |
| 146 if ( current_video != NULL ) { | |
| 147 SDL_VideoQuit(); | |
| 148 } | |
| 149 | |
| 150 /* Select the proper video driver */ | |
| 151 index = 0; | |
| 152 video = NULL; | |
| 153 if ( driver_name != NULL ) { | |
| 154 #if 0 /* This will be replaced with a better driver selection API */ | |
| 155 if ( strrchr(driver_name, ':') != NULL ) { | |
| 156 index = atoi(strrchr(driver_name, ':')+1); | |
| 157 } | |
| 158 #endif | |
| 159 for ( i=0; bootstrap[i]; ++i ) { | |
| 160 if ( strncmp(bootstrap[i]->name, driver_name, | |
| 161 strlen(bootstrap[i]->name)) == 0 ) { | |
| 162 if ( bootstrap[i]->available() ) { | |
| 163 video = bootstrap[i]->create(index); | |
| 164 break; | |
| 165 } | |
| 166 } | |
| 167 } | |
| 168 } else { | |
| 169 for ( i=0; bootstrap[i]; ++i ) { | |
| 170 if ( bootstrap[i]->available() ) { | |
| 171 video = bootstrap[i]->create(index); | |
| 172 if ( video != NULL ) { | |
| 173 break; | |
| 174 } | |
| 175 } | |
| 176 } | |
| 177 } | |
| 178 if ( video == NULL ) { | |
| 179 SDL_SetError("No available video device"); | |
| 180 return(-1); | |
| 181 } | |
| 182 current_video = video; | |
| 183 current_video->name = bootstrap[i]->name; | |
| 184 | |
| 185 /* Do some basic variable initialization */ | |
| 186 video->screen = NULL; | |
| 187 video->shadow = NULL; | |
| 188 video->visible = NULL; | |
| 189 video->physpal = NULL; | |
| 190 video->gammacols = NULL; | |
| 191 video->gamma = NULL; | |
| 192 video->wm_title = NULL; | |
| 193 video->wm_icon = NULL; | |
| 194 video->offset_x = 0; | |
| 195 video->offset_y = 0; | |
| 196 memset(&video->info, 0, (sizeof video->info)); | |
| 197 | |
| 198 /* Set some very sane GL defaults */ | |
| 199 video->gl_config.driver_loaded = 0; | |
| 200 video->gl_config.dll_handle = NULL; | |
| 201 video->gl_config.red_size = 5; | |
| 202 #if 1 /* This seems to work on more video cards, as a default */ | |
| 203 video->gl_config.green_size = 5; | |
| 204 #else | |
| 205 video->gl_config.green_size = 6; | |
| 206 #endif | |
| 207 video->gl_config.blue_size = 5; | |
| 208 video->gl_config.alpha_size = 0; | |
| 209 video->gl_config.buffer_size = 0; | |
| 210 video->gl_config.depth_size = 16; | |
| 211 video->gl_config.stencil_size = 0; | |
| 212 video->gl_config.double_buffer = 1; | |
| 213 video->gl_config.accum_red_size = 0; | |
| 214 video->gl_config.accum_green_size = 0; | |
| 215 video->gl_config.accum_blue_size = 0; | |
| 216 video->gl_config.accum_alpha_size = 0; | |
| 217 | |
| 218 /* Initialize the video subsystem */ | |
| 219 memset(&vformat, 0, sizeof(vformat)); | |
| 220 if ( video->VideoInit(video, &vformat) < 0 ) { | |
| 221 SDL_VideoQuit(); | |
| 222 return(-1); | |
| 223 } | |
| 224 | |
| 225 /* Create a zero sized video surface of the appropriate format */ | |
| 226 video_flags = SDL_SWSURFACE; | |
| 227 SDL_VideoSurface = SDL_CreateRGBSurface(video_flags, 0, 0, | |
| 228 vformat.BitsPerPixel, | |
| 229 vformat.Rmask, vformat.Gmask, vformat.Bmask, 0); | |
| 230 if ( SDL_VideoSurface == NULL ) { | |
| 231 SDL_VideoQuit(); | |
| 232 return(-1); | |
| 233 } | |
| 234 SDL_PublicSurface = NULL; /* Until SDL_SetVideoMode() */ | |
| 235 | |
| 236 #if 0 /* Don't change the current palette - may be used by other programs. | |
| 237 * The application can't do anything with the display surface until | |
| 238 * a video mode has been set anyway. :) | |
| 239 */ | |
| 240 /* If we have a palettized surface, create a default palette */ | |
| 241 if ( SDL_VideoSurface->format->palette ) { | |
| 242 SDL_PixelFormat *vf = SDL_VideoSurface->format; | |
| 243 SDL_DitherColors(vf->palette->colors, vf->BitsPerPixel); | |
| 244 video->SetColors(video, | |
| 245 0, vf->palette->ncolors, vf->palette->colors); | |
| 246 } | |
| 247 #endif | |
| 248 video->info.vfmt = SDL_VideoSurface->format; | |
| 249 | |
| 250 /* Start the event loop */ | |
| 251 if ( SDL_StartEventLoop(flags) < 0 ) { | |
| 252 SDL_VideoQuit(); | |
| 253 return(-1); | |
| 254 } | |
| 255 SDL_CursorInit(flags & SDL_INIT_EVENTTHREAD); | |
| 256 | |
| 257 /* We're ready to go! */ | |
| 258 return(0); | |
| 259 } | |
| 260 | |
| 261 char *SDL_VideoDriverName(char *namebuf, int maxlen) | |
| 262 { | |
| 263 if ( current_video != NULL ) { | |
| 264 strncpy(namebuf, current_video->name, maxlen-1); | |
| 265 namebuf[maxlen-1] = '\0'; | |
| 266 return(namebuf); | |
| 267 } | |
| 268 return(NULL); | |
| 269 } | |
| 270 | |
| 271 /* | |
| 272 * Get the current display surface | |
| 273 */ | |
| 274 SDL_Surface *SDL_GetVideoSurface(void) | |
| 275 { | |
| 276 SDL_Surface *visible; | |
| 277 | |
| 278 visible = NULL; | |
| 279 if ( current_video ) { | |
| 280 visible = current_video->visible; | |
| 281 } | |
| 282 return(visible); | |
| 283 } | |
| 284 | |
| 285 /* | |
| 286 * Get the current information about the video hardware | |
| 287 */ | |
| 288 const SDL_VideoInfo *SDL_GetVideoInfo(void) | |
| 289 { | |
| 290 const SDL_VideoInfo *info; | |
| 291 | |
| 292 info = NULL; | |
| 293 if ( current_video ) { | |
| 294 info = ¤t_video->info; | |
| 295 } | |
| 296 return(info); | |
| 297 } | |
| 298 | |
| 299 /* | |
| 300 * Return a pointer to an array of available screen dimensions for the | |
| 301 * given format, sorted largest to smallest. Returns NULL if there are | |
| 302 * no dimensions available for a particular format, or (SDL_Rect **)-1 | |
| 303 * if any dimension is okay for the given format. If 'format' is NULL, | |
| 304 * the mode list will be for the format given by SDL_GetVideoInfo()->vfmt | |
| 305 */ | |
| 306 SDL_Rect ** SDL_ListModes (SDL_PixelFormat *format, Uint32 flags) | |
| 307 { | |
| 308 SDL_VideoDevice *video = current_video; | |
| 309 SDL_VideoDevice *this = current_video; | |
| 310 SDL_Rect **modes; | |
| 311 | |
| 312 modes = NULL; | |
| 313 if ( SDL_VideoSurface ) { | |
| 314 if ( format == NULL ) { | |
| 315 format = SDL_VideoSurface->format; | |
| 316 } | |
| 317 modes = video->ListModes(this, format, flags); | |
| 318 } | |
| 319 return(modes); | |
| 320 } | |
| 321 | |
| 322 /* | |
| 323 * Check to see if a particular video mode is supported. | |
| 324 * It returns 0 if the requested mode is not supported under any bit depth, | |
| 325 * or returns the bits-per-pixel of the closest available mode with the | |
| 326 * given width and height. If this bits-per-pixel is different from the | |
| 327 * one used when setting the video mode, SDL_SetVideoMode() will succeed, | |
| 328 * but will emulate the requested bits-per-pixel with a shadow surface. | |
| 329 */ | |
| 330 static Uint8 SDL_closest_depths[4][8] = { | |
| 331 /* 8 bit closest depth ordering */ | |
| 332 { 0, 8, 16, 15, 32, 24, 0, 0 }, | |
| 333 /* 15,16 bit closest depth ordering */ | |
| 334 { 0, 16, 15, 32, 24, 8, 0, 0 }, | |
| 335 /* 24 bit closest depth ordering */ | |
| 336 { 0, 24, 32, 16, 15, 8, 0, 0 }, | |
| 337 /* 32 bit closest depth ordering */ | |
| 338 { 0, 32, 16, 15, 24, 8, 0, 0 } | |
| 339 }; | |
| 340 | |
| 341 int SDL_VideoModeOK (int width, int height, int bpp, Uint32 flags) | |
| 342 { | |
| 343 int table, b, i; | |
| 344 int supported; | |
| 345 SDL_PixelFormat format; | |
| 346 SDL_Rect **sizes; | |
| 347 | |
| 348 /* Currently 1 and 4 bpp are not supported */ | |
| 349 if ( bpp < 8 || bpp > 32 ) { | |
| 350 return(0); | |
| 351 } | |
| 352 if ( (width == 0) || (height == 0) ) { | |
| 353 return(0); | |
| 354 } | |
| 355 | |
| 356 /* Search through the list valid of modes */ | |
| 357 memset(&format, 0, sizeof(format)); | |
| 358 supported = 0; | |
| 359 table = ((bpp+7)/8)-1; | |
| 360 SDL_closest_depths[table][0] = bpp; | |
| 361 SDL_closest_depths[table][7] = 0; | |
| 362 for ( b = 0; !supported && SDL_closest_depths[table][b]; ++b ) { | |
| 363 format.BitsPerPixel = SDL_closest_depths[table][b]; | |
| 364 sizes = SDL_ListModes(&format, flags); | |
| 365 if ( sizes == (SDL_Rect **)0 ) { | |
| 366 /* No sizes supported at this bit-depth */ | |
| 367 continue; | |
| 368 } else | |
| 369 #ifdef macintosh /* MPW optimization bug? */ | |
| 370 if ( (sizes == (SDL_Rect **)0xFFFFFFFF) || | |
| 371 #else | |
| 372 if ( (sizes == (SDL_Rect **)-1) || | |
| 373 #endif | |
| 374 current_video->handles_any_size ) { | |
| 375 /* Any size supported at this bit-depth */ | |
| 376 supported = 1; | |
| 377 continue; | |
| 378 } else | |
| 379 for ( i=0; sizes[i]; ++i ) { | |
| 380 if ((sizes[i]->w == width) && (sizes[i]->h == height)) { | |
| 381 supported = 1; | |
| 382 break; | |
| 383 } | |
| 384 } | |
| 385 } | |
| 386 if ( supported ) { | |
| 387 --b; | |
| 388 return(SDL_closest_depths[table][b]); | |
| 389 } else { | |
| 390 return(0); | |
| 391 } | |
| 392 } | |
| 393 | |
| 394 /* | |
| 395 * Get the closest non-emulated video mode to the one requested | |
| 396 */ | |
| 397 static int SDL_GetVideoMode (int *w, int *h, int *BitsPerPixel, Uint32 flags) | |
| 398 { | |
| 399 int table, b, i; | |
| 400 int supported; | |
| 401 int native_bpp; | |
| 402 SDL_PixelFormat format; | |
| 403 SDL_Rect **sizes; | |
| 404 | |
| 405 /* Try the original video mode, get the closest depth */ | |
| 406 native_bpp = SDL_VideoModeOK(*w, *h, *BitsPerPixel, flags); | |
| 407 if ( native_bpp == *BitsPerPixel ) { | |
| 408 return(1); | |
| 409 } | |
| 410 if ( native_bpp > 0 ) { | |
| 411 *BitsPerPixel = native_bpp; | |
| 412 return(1); | |
| 413 } | |
| 414 | |
| 415 /* No exact size match at any depth, look for closest match */ | |
| 416 memset(&format, 0, sizeof(format)); | |
| 417 supported = 0; | |
| 418 table = ((*BitsPerPixel+7)/8)-1; | |
| 419 SDL_closest_depths[table][0] = *BitsPerPixel; | |
| 420 SDL_closest_depths[table][7] = SDL_VideoSurface->format->BitsPerPixel; | |
| 421 for ( b = 0; !supported && SDL_closest_depths[table][b]; ++b ) { | |
| 422 format.BitsPerPixel = SDL_closest_depths[table][b]; | |
| 423 sizes = SDL_ListModes(&format, flags); | |
| 424 if ( sizes == (SDL_Rect **)0 ) { | |
| 425 /* No sizes supported at this bit-depth */ | |
| 426 continue; | |
| 427 } | |
| 428 for ( i=0; sizes[i]; ++i ) { | |
| 429 if ((sizes[i]->w < *w) || (sizes[i]->h < *h)) { | |
| 430 if ( i > 0 ) { | |
| 431 --i; | |
| 432 *w = sizes[i]->w; | |
| 433 *h = sizes[i]->h; | |
| 434 *BitsPerPixel = SDL_closest_depths[table][b]; | |
| 435 supported = 1; | |
| 436 } else { | |
| 437 /* Largest mode too small... */; | |
| 438 } | |
| 439 break; | |
| 440 } | |
| 441 } | |
| 442 if ( (i > 0) && ! sizes[i] ) { | |
| 443 /* The smallest mode was larger than requested, OK */ | |
| 444 --i; | |
| 445 *w = sizes[i]->w; | |
| 446 *h = sizes[i]->h; | |
| 447 *BitsPerPixel = SDL_closest_depths[table][b]; | |
| 448 supported = 1; | |
| 449 } | |
| 450 } | |
| 451 if ( ! supported ) { | |
| 452 SDL_SetError("No video mode large enough for %dx%d", *w, *h); | |
| 453 } | |
| 454 return(supported); | |
| 455 } | |
| 456 | |
| 457 /* This should probably go somewhere else -- like SDL_surface.c */ | |
| 458 static void SDL_ClearSurface(SDL_Surface *surface) | |
| 459 { | |
| 460 Uint32 black; | |
| 461 | |
| 462 black = SDL_MapRGB(surface->format, 0, 0, 0); | |
| 463 SDL_FillRect(surface, NULL, black); | |
| 464 if ((surface->flags&SDL_HWSURFACE) && (surface->flags&SDL_DOUBLEBUF)) { | |
| 465 SDL_Flip(surface); | |
| 466 SDL_FillRect(surface, NULL, black); | |
| 467 } | |
| 468 SDL_Flip(surface); | |
| 469 } | |
| 470 | |
| 471 /* | |
| 472 * Create a shadow surface suitable for fooling the app. :-) | |
| 473 */ | |
| 474 static void SDL_CreateShadowSurface(int depth) | |
| 475 { | |
| 476 Uint32 Rmask, Gmask, Bmask; | |
| 477 | |
| 478 /* Allocate the shadow surface */ | |
| 479 if ( depth == (SDL_VideoSurface->format)->BitsPerPixel ) { | |
| 480 Rmask = (SDL_VideoSurface->format)->Rmask; | |
| 481 Gmask = (SDL_VideoSurface->format)->Gmask; | |
| 482 Bmask = (SDL_VideoSurface->format)->Bmask; | |
| 483 } else { | |
| 484 Rmask = Gmask = Bmask = 0; | |
| 485 } | |
| 486 SDL_ShadowSurface = SDL_CreateRGBSurface(SDL_SWSURFACE, | |
| 487 SDL_VideoSurface->w, SDL_VideoSurface->h, | |
| 488 depth, Rmask, Gmask, Bmask, 0); | |
| 489 if ( SDL_ShadowSurface == NULL ) { | |
| 490 return; | |
| 491 } | |
| 492 | |
| 493 /* 8-bit shadow surfaces report that they have exclusive palette */ | |
| 494 if ( SDL_ShadowSurface->format->palette ) { | |
| 495 SDL_ShadowSurface->flags |= SDL_HWPALETTE; | |
| 496 if ( depth == (SDL_VideoSurface->format)->BitsPerPixel ) { | |
| 497 memcpy(SDL_ShadowSurface->format->palette->colors, | |
| 498 SDL_VideoSurface->format->palette->colors, | |
| 499 SDL_VideoSurface->format->palette->ncolors* | |
| 500 sizeof(SDL_Color)); | |
| 501 } else { | |
| 502 SDL_DitherColors( | |
| 503 SDL_ShadowSurface->format->palette->colors, depth); | |
| 504 } | |
| 505 } | |
| 506 | |
| 507 /* If the video surface is resizable, the shadow should say so */ | |
| 508 if ( (SDL_VideoSurface->flags & SDL_RESIZABLE) == SDL_RESIZABLE ) { | |
| 509 SDL_ShadowSurface->flags |= SDL_RESIZABLE; | |
| 510 } | |
| 511 /* If the video surface has no frame, the shadow should say so */ | |
| 512 if ( (SDL_VideoSurface->flags & SDL_NOFRAME) == SDL_NOFRAME ) { | |
| 513 SDL_ShadowSurface->flags |= SDL_NOFRAME; | |
| 514 } | |
| 515 /* If the video surface is fullscreen, the shadow should say so */ | |
| 516 if ( (SDL_VideoSurface->flags & SDL_FULLSCREEN) == SDL_FULLSCREEN ) { | |
| 517 SDL_ShadowSurface->flags |= SDL_FULLSCREEN; | |
| 518 } | |
| 519 /* If the video surface is flippable, the shadow should say so */ | |
| 520 if ( (SDL_VideoSurface->flags & SDL_DOUBLEBUF) == SDL_DOUBLEBUF ) { | |
| 521 SDL_ShadowSurface->flags |= SDL_DOUBLEBUF; | |
| 522 } | |
| 523 return; | |
| 524 } | |
| 525 | |
| 526 /* | |
| 527 * Set the requested video mode, allocating a shadow buffer if necessary. | |
| 528 */ | |
| 529 SDL_Surface * SDL_SetVideoMode (int width, int height, int bpp, Uint32 flags) | |
| 530 { | |
| 531 SDL_VideoDevice *video, *this; | |
| 532 SDL_Surface *prev_mode, *mode; | |
| 533 int video_w; | |
| 534 int video_h; | |
| 535 int video_bpp; | |
| 536 int is_opengl; | |
| 537 SDL_GrabMode saved_grab; | |
| 538 | |
| 539 /* Start up the video driver, if necessary.. | |
| 540 WARNING: This is the only function protected this way! | |
| 541 */ | |
| 542 if ( ! current_video ) { | |
| 543 if ( SDL_Init(SDL_INIT_VIDEO|SDL_INIT_NOPARACHUTE) < 0 ) { | |
| 544 return(NULL); | |
| 545 } | |
| 546 } | |
| 547 this = video = current_video; | |
| 548 | |
| 549 /* Default to the current video bpp */ | |
| 550 if ( bpp == 0 ) { | |
| 551 flags |= SDL_ANYFORMAT; | |
| 552 bpp = SDL_VideoSurface->format->BitsPerPixel; | |
| 553 } | |
| 554 | |
| 555 /* Get a good video mode, the closest one possible */ | |
| 556 video_w = width; | |
| 557 video_h = height; | |
| 558 video_bpp = bpp; | |
| 559 if ( ! SDL_GetVideoMode(&video_w, &video_h, &video_bpp, flags) ) { | |
| 560 return(NULL); | |
| 561 } | |
| 562 | |
| 563 /* Check the requested flags */ | |
| 564 /* There's no palette in > 8 bits-per-pixel mode */ | |
| 565 if ( video_bpp > 8 ) { | |
| 566 flags &= ~SDL_HWPALETTE; | |
| 567 } | |
| 568 #if 0 | |
| 569 if ( (flags&SDL_FULLSCREEN) != SDL_FULLSCREEN ) { | |
| 570 /* There's no windowed double-buffering */ | |
| 571 flags &= ~SDL_DOUBLEBUF; | |
| 572 } | |
| 573 #endif | |
| 574 if ( (flags&SDL_DOUBLEBUF) == SDL_DOUBLEBUF ) { | |
| 575 /* Use hardware surfaces when double-buffering */ | |
| 576 flags |= SDL_HWSURFACE; | |
| 577 } | |
| 578 | |
| 579 is_opengl = ( ( flags & SDL_OPENGL ) == SDL_OPENGL ); | |
| 580 if ( is_opengl ) { | |
| 581 /* These flags are for 2D video modes only */ | |
| 582 flags &= ~(SDL_HWSURFACE|SDL_DOUBLEBUF); | |
| 583 } | |
| 584 | |
|
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Fixed stuck keys when changing the video mode
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585 /* Reset the keyboard here so event callbacks can run */ |
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586 SDL_ResetKeyboard(); |
|
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587 |
| 0 | 588 /* Clean up any previous video mode */ |
| 589 if ( SDL_PublicSurface != NULL ) { | |
| 590 SDL_PublicSurface = NULL; | |
| 591 } | |
| 592 if ( SDL_ShadowSurface != NULL ) { | |
| 593 SDL_Surface *ready_to_go; | |
| 594 ready_to_go = SDL_ShadowSurface; | |
| 595 SDL_ShadowSurface = NULL; | |
| 596 SDL_FreeSurface(ready_to_go); | |
| 597 } | |
| 598 if ( video->physpal ) { | |
| 599 free(video->physpal->colors); | |
| 600 free(video->physpal); | |
| 601 video->physpal = NULL; | |
| 602 } | |
| 603 if( video->gammacols) { | |
| 604 free(video->gammacols); | |
| 605 video->gammacols = NULL; | |
| 606 } | |
| 607 | |
| 608 /* Save the previous grab state and turn off grab for mode switch */ | |
| 609 saved_grab = SDL_WM_GrabInputOff(); | |
| 610 | |
| 611 /* Try to set the video mode, along with offset and clipping */ | |
| 612 prev_mode = SDL_VideoSurface; | |
| 613 SDL_LockCursor(); | |
| 614 SDL_VideoSurface = NULL; /* In case it's freed by driver */ | |
| 615 mode = video->SetVideoMode(this, prev_mode,video_w,video_h,video_bpp,flags); | |
| 616 if ( mode ) { /* Prevent resize events from mode change */ | |
| 617 SDL_PrivateResize(mode->w, mode->h); | |
|
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618 |
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619 /* Sam - If we asked for OpenGL mode, and didn't get it, fail */ |
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620 if ( is_opengl && !(mode->flags & SDL_OPENGL) ) { |
|
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621 mode = NULL; |
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|
622 } |
| 0 | 623 } |
| 624 /* | |
| 625 * rcg11292000 | |
| 626 * If you try to set an SDL_OPENGL surface, and fail to find a | |
| 627 * matching visual, then the next call to SDL_SetVideoMode() | |
| 628 * will segfault, since we no longer point to a dummy surface, | |
| 629 * but rather NULL. | |
| 630 * Sam 11/29/00 | |
| 631 * WARNING, we need to make sure that the previous mode hasn't | |
| 632 * already been freed by the video driver. What do we do in | |
| 633 * that case? Should we call SDL_VideoInit() again? | |
| 634 */ | |
| 635 SDL_VideoSurface = (mode != NULL) ? mode : prev_mode; | |
| 636 | |
| 637 if ( (mode != NULL) && (!is_opengl) ) { | |
| 638 /* Sanity check */ | |
| 639 if ( (mode->w < width) || (mode->h < height) ) { | |
| 640 SDL_SetError("Video mode smaller than requested"); | |
| 641 return(NULL); | |
| 642 } | |
| 643 | |
| 644 /* If we have a palettized surface, create a default palette */ | |
| 645 if ( mode->format->palette ) { | |
| 646 SDL_PixelFormat *vf = mode->format; | |
| 647 SDL_DitherColors(vf->palette->colors, vf->BitsPerPixel); | |
| 648 video->SetColors(this, 0, vf->palette->ncolors, | |
| 649 vf->palette->colors); | |
| 650 } | |
| 651 | |
| 652 /* Clear the surface to black */ | |
| 653 video->offset_x = 0; | |
| 654 video->offset_y = 0; | |
| 655 mode->offset = 0; | |
| 656 SDL_SetClipRect(mode, NULL); | |
| 657 SDL_ClearSurface(mode); | |
| 658 | |
| 659 /* Now adjust the offsets to match the desired mode */ | |
| 660 video->offset_x = (mode->w-width)/2; | |
| 661 video->offset_y = (mode->h-height)/2; | |
| 662 mode->offset = video->offset_y*mode->pitch + | |
| 663 video->offset_x*mode->format->BytesPerPixel; | |
| 664 #ifdef DEBUG_VIDEO | |
| 665 fprintf(stderr, | |
| 666 "Requested mode: %dx%dx%d, obtained mode %dx%dx%d (offset %d)\n", | |
| 667 width, height, bpp, | |
| 668 mode->w, mode->h, mode->format->BitsPerPixel, mode->offset); | |
| 669 #endif | |
| 670 mode->w = width; | |
| 671 mode->h = height; | |
| 672 SDL_SetClipRect(mode, NULL); | |
| 673 } | |
| 674 SDL_ResetCursor(); | |
| 675 SDL_UnlockCursor(); | |
| 676 | |
| 677 /* If we failed setting a video mode, return NULL... (Uh Oh!) */ | |
| 678 if ( mode == NULL ) { | |
| 679 return(NULL); | |
| 680 } | |
| 681 | |
| 682 /* If there is no window manager, set the SDL_NOFRAME flag */ | |
| 683 if ( ! video->info.wm_available ) { | |
| 684 mode->flags |= SDL_NOFRAME; | |
| 685 } | |
| 686 | |
| 687 /* Reset the mouse cursor and grab for new video mode */ | |
| 688 SDL_SetCursor(NULL); | |
| 689 if ( video->UpdateMouse ) { | |
| 690 video->UpdateMouse(this); | |
| 691 } | |
| 692 SDL_WM_GrabInput(saved_grab); | |
| 693 SDL_GetRelativeMouseState(NULL, NULL); /* Clear first large delta */ | |
| 694 | |
| 695 /* If we're running OpenGL, make the context current */ | |
| 696 if ( (video->screen->flags & SDL_OPENGL) && | |
| 697 video->GL_MakeCurrent ) { | |
| 698 if ( video->GL_MakeCurrent(this) < 0 ) { | |
| 699 return(NULL); | |
| 700 } | |
| 701 } | |
| 702 | |
| 703 /* Set up a fake SDL surface for OpenGL "blitting" */ | |
| 704 if ( (flags & SDL_OPENGLBLIT) == SDL_OPENGLBLIT ) { | |
| 705 /* Load GL functions for performing the texture updates */ | |
| 706 #ifdef HAVE_OPENGL | |
| 707 #define SDL_PROC(ret,func,params) \ | |
| 708 do { \ | |
| 709 video->func = SDL_GL_GetProcAddress(#func); \ | |
| 710 if ( ! video->func ) { \ | |
| 711 SDL_SetError("Couldn't load GL function: %s\n", #func); \ | |
| 712 return(NULL); \ | |
| 713 } \ | |
| 714 } while ( 0 ); | |
| 715 #include "SDL_glfuncs.h" | |
| 716 #undef SDL_PROC | |
| 717 | |
| 718 /* Create a software surface for blitting */ | |
| 719 #ifdef GL_VERSION_1_2 | |
| 720 /* If the implementation either supports the packed pixels | |
| 721 extension, or implements the core OpenGL 1.2 API, it will | |
| 722 support the GL_UNSIGNED_SHORT_5_6_5 texture format. | |
| 723 */ | |
| 724 if ( (bpp == 16) && | |
| 725 (strstr((const char *)video->glGetString(GL_EXTENSIONS), | |
| 726 "GL_EXT_packed_pixels") || | |
| 727 (strncmp((const char *)video->glGetString(GL_VERSION), | |
| 728 "1.2", 3) == 0)) ) | |
| 729 { | |
| 730 video->is_32bit = 0; | |
| 731 SDL_VideoSurface = SDL_CreateRGBSurface( | |
| 732 flags, | |
| 733 width, | |
| 734 height, | |
| 735 16, | |
| 736 31 << 11, | |
| 737 63 << 5, | |
| 738 31, | |
| 739 0 | |
| 740 ); | |
| 741 } | |
| 742 else | |
| 743 #endif /* OpenGL 1.2 */ | |
| 744 { | |
| 745 video->is_32bit = 1; | |
| 746 SDL_VideoSurface = SDL_CreateRGBSurface( | |
| 747 flags, | |
| 748 width, | |
| 749 height, | |
| 750 32, | |
| 751 #if SDL_BYTEORDER == SDL_LIL_ENDIAN | |
| 752 0x000000FF, | |
| 753 0x0000FF00, | |
| 754 0x00FF0000, | |
| 755 0xFF000000 | |
| 756 #else | |
| 757 0xFF000000, | |
| 758 0x00FF0000, | |
| 759 0x0000FF00, | |
| 760 0x000000FF | |
| 761 #endif | |
| 762 ); | |
| 763 } | |
| 764 if ( ! SDL_VideoSurface ) { | |
| 765 return(NULL); | |
| 766 } | |
| 767 SDL_VideoSurface->flags = mode->flags | SDL_OPENGLBLIT; | |
| 768 | |
| 769 /* Free the original video mode surface (is this safe?) */ | |
| 770 SDL_FreeSurface(mode); | |
| 771 | |
| 772 /* Set the surface completely opaque & white by default */ | |
| 773 memset( SDL_VideoSurface->pixels, 255, SDL_VideoSurface->h * SDL_VideoSurface->pitch ); | |
| 774 video->glGenTextures( 1, &video->texture ); | |
| 775 video->glBindTexture( GL_TEXTURE_2D, video->texture ); | |
| 776 video->glTexImage2D( | |
| 777 GL_TEXTURE_2D, | |
| 778 0, | |
| 779 video->is_32bit ? GL_RGBA : GL_RGB, | |
| 780 256, | |
| 781 256, | |
| 782 0, | |
| 783 video->is_32bit ? GL_RGBA : GL_RGB, | |
| 784 #ifdef GL_VERSION_1_2 | |
| 785 video->is_32bit ? GL_UNSIGNED_BYTE : GL_UNSIGNED_SHORT_5_6_5, | |
| 786 #else | |
| 787 GL_UNSIGNED_BYTE, | |
| 788 #endif | |
| 789 NULL); | |
| 790 | |
| 791 video->UpdateRects = SDL_GL_UpdateRectsLock; | |
| 792 #else | |
| 793 SDL_SetError("Somebody forgot to #define HAVE_OPENGL"); | |
| 794 return(NULL); | |
| 795 #endif | |
| 796 } | |
| 797 | |
| 798 /* Create a shadow surface if necessary */ | |
| 799 /* There are three conditions under which we create a shadow surface: | |
| 800 1. We need a particular bits-per-pixel that we didn't get. | |
| 801 2. We need a hardware palette and didn't get one. | |
| 802 3. We need a software surface and got a hardware surface. | |
| 803 */ | |
| 804 if ( !(SDL_VideoSurface->flags & SDL_OPENGL) && | |
| 805 ( | |
| 806 ( !(flags&SDL_ANYFORMAT) && | |
| 807 (SDL_VideoSurface->format->BitsPerPixel != bpp)) || | |
| 808 ( (flags&SDL_HWPALETTE) && | |
| 809 !(SDL_VideoSurface->flags&SDL_HWPALETTE)) || | |
| 810 /* If the surface is in hardware, video writes are visible | |
| 811 as soon as they are performed, so we need to buffer them | |
| 812 */ | |
| 813 ( ((flags&SDL_HWSURFACE) == SDL_SWSURFACE) && | |
| 814 (SDL_VideoSurface->flags&SDL_HWSURFACE)) | |
| 815 ) ) { | |
| 816 SDL_CreateShadowSurface(bpp); | |
| 817 if ( SDL_ShadowSurface == NULL ) { | |
| 818 SDL_SetError("Couldn't create shadow surface"); | |
| 819 return(NULL); | |
| 820 } | |
| 821 SDL_PublicSurface = SDL_ShadowSurface; | |
| 822 } else { | |
| 823 SDL_PublicSurface = SDL_VideoSurface; | |
| 824 } | |
| 825 video->info.vfmt = SDL_VideoSurface->format; | |
| 826 | |
| 827 /* We're done! */ | |
| 828 return(SDL_PublicSurface); | |
| 829 } | |
| 830 | |
| 831 /* | |
| 832 * Convert a surface into the video pixel format. | |
| 833 */ | |
| 834 SDL_Surface * SDL_DisplayFormat (SDL_Surface *surface) | |
| 835 { | |
| 836 Uint32 flags; | |
| 837 | |
| 838 if ( ! SDL_PublicSurface ) { | |
| 839 SDL_SetError("No video mode has been set"); | |
| 840 return(NULL); | |
| 841 } | |
| 842 /* Set the flags appropriate for copying to display surface */ | |
| 843 flags = (SDL_PublicSurface->flags&SDL_HWSURFACE); | |
| 844 #ifdef AUTORLE_DISPLAYFORMAT | |
| 845 flags |= (surface->flags & (SDL_SRCCOLORKEY|SDL_SRCALPHA)); | |
| 846 flags |= SDL_RLEACCELOK; | |
| 847 #else | |
| 848 flags |= surface->flags & (SDL_SRCCOLORKEY|SDL_SRCALPHA|SDL_RLEACCELOK); | |
| 849 #endif | |
| 850 return(SDL_ConvertSurface(surface, SDL_PublicSurface->format, flags)); | |
| 851 } | |
| 852 | |
| 853 /* | |
| 854 * Convert a surface into a format that's suitable for blitting to | |
| 855 * the screen, but including an alpha channel. | |
| 856 */ | |
| 857 SDL_Surface *SDL_DisplayFormatAlpha(SDL_Surface *surface) | |
| 858 { | |
| 859 SDL_PixelFormat *vf; | |
| 860 SDL_PixelFormat *format; | |
| 861 SDL_Surface *converted; | |
| 862 Uint32 flags; | |
| 863 /* default to ARGB8888 */ | |
| 864 Uint32 amask = 0xff000000; | |
| 865 Uint32 rmask = 0x00ff0000; | |
| 866 Uint32 gmask = 0x0000ff00; | |
| 867 Uint32 bmask = 0x000000ff; | |
| 868 | |
| 869 if ( ! SDL_PublicSurface ) { | |
| 870 SDL_SetError("No video mode has been set"); | |
| 871 return(NULL); | |
| 872 } | |
| 873 vf = SDL_PublicSurface->format; | |
| 874 | |
| 875 switch(vf->BytesPerPixel) { | |
| 876 case 2: | |
| 877 /* For XGY5[56]5, use, AXGY8888, where {X, Y} = {R, B}. | |
| 878 For anything else (like ARGB4444) it doesn't matter | |
| 879 since we have no special code for it anyway */ | |
| 880 if ( (vf->Rmask == 0x1f) && | |
| 881 (vf->Bmask == 0xf800 || vf->Bmask == 0x7c00)) { | |
| 882 rmask = 0xff; | |
| 883 bmask = 0xff0000; | |
| 884 } | |
| 885 break; | |
| 886 | |
| 887 case 3: | |
| 888 case 4: | |
| 889 /* Keep the video format, as long as the high 8 bits are | |
| 890 unused or alpha */ | |
| 891 if ( (vf->Rmask == 0xff) && (vf->Bmask == 0xff0000) ) { | |
| 892 rmask = 0xff; | |
| 893 bmask = 0xff0000; | |
| 894 } | |
| 895 break; | |
| 896 | |
| 897 default: | |
| 898 /* We have no other optimised formats right now. When/if a new | |
| 899 optimised alpha format is written, add the converter here */ | |
| 900 break; | |
| 901 } | |
| 902 format = SDL_AllocFormat(32, rmask, gmask, bmask, amask); | |
| 903 flags = SDL_PublicSurface->flags & SDL_HWSURFACE; | |
| 904 flags |= surface->flags & (SDL_SRCALPHA | SDL_RLEACCELOK); | |
| 905 converted = SDL_ConvertSurface(surface, format, flags); | |
| 906 SDL_FreeFormat(format); | |
| 907 return(converted); | |
| 908 } | |
| 909 | |
| 910 /* | |
| 911 * Update a specific portion of the physical screen | |
| 912 */ | |
| 913 void SDL_UpdateRect(SDL_Surface *screen, Sint32 x, Sint32 y, Uint32 w, Uint32 h) | |
| 914 { | |
| 915 if ( screen ) { | |
| 916 SDL_Rect rect; | |
| 917 | |
| 918 /* Perform some checking */ | |
| 919 if ( w == 0 ) | |
| 920 w = screen->w; | |
| 921 if ( h == 0 ) | |
| 922 h = screen->h; | |
| 923 if ( (int)(x+w) > screen->w ) | |
| 924 return; | |
| 925 if ( (int)(y+h) > screen->h ) | |
| 926 return; | |
| 927 | |
| 928 /* Fill the rectangle */ | |
| 929 rect.x = x; | |
| 930 rect.y = y; | |
| 931 rect.w = w; | |
| 932 rect.h = h; | |
| 933 SDL_UpdateRects(screen, 1, &rect); | |
| 934 } | |
| 935 } | |
| 936 void SDL_UpdateRects (SDL_Surface *screen, int numrects, SDL_Rect *rects) | |
| 937 { | |
| 938 int i; | |
| 939 SDL_VideoDevice *video = current_video; | |
| 940 SDL_VideoDevice *this = current_video; | |
| 941 | |
| 942 if ( screen == SDL_ShadowSurface ) { | |
| 943 /* Blit the shadow surface using saved mapping */ | |
| 944 SDL_Palette *pal = screen->format->palette; | |
| 945 SDL_Color *saved_colors = NULL; | |
| 946 if ( pal && !(SDL_VideoSurface->flags & SDL_HWPALETTE) ) { | |
| 947 /* simulated 8bpp, use correct physical palette */ | |
| 948 saved_colors = pal->colors; | |
| 949 if ( video->gammacols ) { | |
| 950 /* gamma-corrected palette */ | |
| 951 pal->colors = video->gammacols; | |
| 952 } else if ( video->physpal ) { | |
| 953 /* physical palette different from logical */ | |
| 954 pal->colors = video->physpal->colors; | |
| 955 } | |
| 956 } | |
| 957 if ( SHOULD_DRAWCURSOR(SDL_cursorstate) ) { | |
| 958 SDL_LockCursor(); | |
| 959 SDL_DrawCursor(SDL_ShadowSurface); | |
| 960 for ( i=0; i<numrects; ++i ) { | |
| 961 SDL_LowerBlit(SDL_ShadowSurface, &rects[i], | |
| 962 SDL_VideoSurface, &rects[i]); | |
| 963 } | |
| 964 SDL_EraseCursor(SDL_ShadowSurface); | |
| 965 SDL_UnlockCursor(); | |
| 966 } else { | |
| 967 for ( i=0; i<numrects; ++i ) { | |
| 968 SDL_LowerBlit(SDL_ShadowSurface, &rects[i], | |
| 969 SDL_VideoSurface, &rects[i]); | |
| 970 } | |
| 971 } | |
| 972 if ( saved_colors ) | |
| 973 pal->colors = saved_colors; | |
| 974 | |
| 975 /* Fall through to video surface update */ | |
| 976 screen = SDL_VideoSurface; | |
| 977 } | |
| 978 if ( screen == SDL_VideoSurface ) { | |
| 979 /* Update the video surface */ | |
| 980 if ( screen->offset ) { | |
| 981 for ( i=0; i<numrects; ++i ) { | |
| 982 rects[i].x += video->offset_x; | |
| 983 rects[i].y += video->offset_y; | |
| 984 } | |
| 985 video->UpdateRects(this, numrects, rects); | |
| 986 for ( i=0; i<numrects; ++i ) { | |
| 987 rects[i].x -= video->offset_x; | |
| 988 rects[i].y -= video->offset_y; | |
| 989 } | |
| 990 } else { | |
| 991 video->UpdateRects(this, numrects, rects); | |
| 992 } | |
| 993 } | |
| 994 } | |
| 995 | |
| 996 /* | |
| 997 * Performs hardware double buffering, if possible, or a full update if not. | |
| 998 */ | |
| 999 int SDL_Flip(SDL_Surface *screen) | |
| 1000 { | |
| 1001 SDL_VideoDevice *video = current_video; | |
| 1002 /* Copy the shadow surface to the video surface */ | |
| 1003 if ( screen == SDL_ShadowSurface ) { | |
| 1004 SDL_Rect rect; | |
| 1005 SDL_Palette *pal = screen->format->palette; | |
| 1006 SDL_Color *saved_colors = NULL; | |
| 1007 if ( pal && !(SDL_VideoSurface->flags & SDL_HWPALETTE) ) { | |
| 1008 /* simulated 8bpp, use correct physical palette */ | |
| 1009 saved_colors = pal->colors; | |
| 1010 if ( video->gammacols ) { | |
| 1011 /* gamma-corrected palette */ | |
| 1012 pal->colors = video->gammacols; | |
| 1013 } else if ( video->physpal ) { | |
| 1014 /* physical palette different from logical */ | |
| 1015 pal->colors = video->physpal->colors; | |
| 1016 } | |
| 1017 } | |
| 1018 | |
| 1019 rect.x = 0; | |
| 1020 rect.y = 0; | |
| 1021 rect.w = screen->w; | |
| 1022 rect.h = screen->h; | |
| 1023 SDL_LowerBlit(SDL_ShadowSurface,&rect, SDL_VideoSurface,&rect); | |
| 1024 | |
| 1025 if ( saved_colors ) | |
| 1026 pal->colors = saved_colors; | |
| 1027 screen = SDL_VideoSurface; | |
| 1028 } | |
| 1029 if ( (screen->flags & SDL_DOUBLEBUF) == SDL_DOUBLEBUF ) { | |
| 1030 SDL_VideoDevice *this = current_video; | |
| 1031 return(video->FlipHWSurface(this, SDL_VideoSurface)); | |
| 1032 } else { | |
| 1033 SDL_UpdateRect(screen, 0, 0, 0, 0); | |
| 1034 } | |
| 1035 return(0); | |
| 1036 } | |
| 1037 | |
| 1038 static void SetPalette_logical(SDL_Surface *screen, SDL_Color *colors, | |
| 1039 int firstcolor, int ncolors) | |
| 1040 { | |
| 1041 SDL_Palette *pal = screen->format->palette; | |
| 1042 SDL_Palette *vidpal; | |
| 1043 | |
| 1044 if ( colors != (pal->colors + firstcolor) ) { | |
| 1045 memcpy(pal->colors + firstcolor, colors, | |
| 1046 ncolors * sizeof(*colors)); | |
| 1047 } | |
| 1048 | |
| 1049 vidpal = SDL_VideoSurface->format->palette; | |
| 1050 if ( (screen == SDL_ShadowSurface) && vidpal ) { | |
| 1051 /* | |
| 1052 * This is a shadow surface, and the physical | |
| 1053 * framebuffer is also indexed. Propagate the | |
| 1054 * changes to its logical palette so that | |
| 1055 * updates are always identity blits | |
| 1056 */ | |
| 1057 memcpy(vidpal->colors + firstcolor, colors, | |
| 1058 ncolors * sizeof(*colors)); | |
| 1059 } | |
| 1060 SDL_FormatChanged(screen); | |
| 1061 } | |
| 1062 | |
| 1063 static int SetPalette_physical(SDL_Surface *screen, | |
| 1064 SDL_Color *colors, int firstcolor, int ncolors) | |
| 1065 { | |
| 1066 SDL_VideoDevice *video = current_video; | |
| 1067 int gotall = 1; | |
| 1068 | |
| 1069 if ( video->physpal ) { | |
| 1070 /* We need to copy the new colors, since we haven't | |
| 1071 * already done the copy in the logical set above. | |
| 1072 */ | |
| 1073 memcpy(video->physpal->colors + firstcolor, | |
| 1074 colors, ncolors * sizeof(*colors)); | |
| 1075 } | |
| 1076 if ( screen == SDL_ShadowSurface ) { | |
| 1077 if ( SDL_VideoSurface->flags & SDL_HWPALETTE ) { | |
| 1078 /* | |
| 1079 * The real screen is also indexed - set its physical | |
| 1080 * palette. The physical palette does not include the | |
| 1081 * gamma modification, we apply it directly instead, | |
| 1082 * but this only happens if we have hardware palette. | |
| 1083 */ | |
| 1084 screen = SDL_VideoSurface; | |
| 1085 } else { | |
| 1086 /* | |
| 1087 * The video surface is not indexed - invalidate any | |
| 1088 * active shadow-to-video blit mappings. | |
| 1089 */ | |
| 1090 if ( screen->map->dst == SDL_VideoSurface ) { | |
| 1091 SDL_InvalidateMap(screen->map); | |
| 1092 } | |
| 1093 if ( video->gamma ) { | |
| 1094 if( ! video->gammacols ) { | |
| 1095 SDL_Palette *pp = video->physpal; | |
| 1096 if(!pp) | |
| 1097 pp = screen->format->palette; | |
| 1098 video->gammacols = malloc(pp->ncolors | |
| 1099 * sizeof(SDL_Color)); | |
| 1100 SDL_ApplyGamma(video->gamma, | |
| 1101 pp->colors, | |
| 1102 video->gammacols, | |
| 1103 pp->ncolors); | |
| 1104 } else { | |
| 1105 SDL_ApplyGamma(video->gamma, colors, | |
| 1106 video->gammacols | |
| 1107 + firstcolor, | |
| 1108 ncolors); | |
| 1109 } | |
| 1110 } | |
| 1111 SDL_UpdateRect(screen, 0, 0, 0, 0); | |
| 1112 } | |
| 1113 } | |
| 1114 | |
| 1115 if ( screen == SDL_VideoSurface ) { | |
| 1116 SDL_Color gcolors[256]; | |
| 1117 | |
| 1118 if ( video->gamma ) { | |
| 1119 SDL_ApplyGamma(video->gamma, colors, gcolors, ncolors); | |
| 1120 colors = gcolors; | |
| 1121 } | |
| 1122 gotall = video->SetColors(video, firstcolor, ncolors, colors); | |
| 1123 if ( ! gotall ) { | |
| 1124 /* The video flags shouldn't have SDL_HWPALETTE, and | |
| 1125 the video driver is responsible for copying back the | |
| 1126 correct colors into the video surface palette. | |
| 1127 */ | |
| 1128 ; | |
| 1129 } | |
| 1130 SDL_CursorPaletteChanged(); | |
| 1131 } | |
| 1132 return gotall; | |
| 1133 } | |
| 1134 | |
| 1135 /* | |
| 1136 * Set the physical and/or logical colormap of a surface: | |
| 1137 * Only the screen has a physical colormap. It determines what is actually | |
| 1138 * sent to the display. | |
| 1139 * The logical colormap is used to map blits to/from the surface. | |
| 1140 * 'which' is one or both of SDL_LOGPAL, SDL_PHYSPAL | |
| 1141 * | |
| 1142 * Return nonzero if all colours were set as requested, or 0 otherwise. | |
| 1143 */ | |
| 1144 int SDL_SetPalette(SDL_Surface *screen, int which, | |
| 1145 SDL_Color *colors, int firstcolor, int ncolors) | |
| 1146 { | |
| 1147 SDL_Palette *pal; | |
| 1148 int gotall; | |
| 1149 int palsize; | |
| 1150 | |
| 34 | 1151 if ( ! current_video ) { |
| 1152 return 0; | |
| 1153 } | |
| 0 | 1154 if ( screen != SDL_PublicSurface ) { |
| 1155 /* only screens have physical palettes */ | |
| 1156 which &= ~SDL_PHYSPAL; | |
| 1157 } else if( (screen->flags & SDL_HWPALETTE) != SDL_HWPALETTE ) { | |
| 1158 /* hardware palettes required for split colormaps */ | |
| 1159 which |= SDL_PHYSPAL | SDL_LOGPAL; | |
| 1160 } | |
| 1161 | |
| 1162 /* Verify the parameters */ | |
| 1163 pal = screen->format->palette; | |
| 1164 if( !pal ) { | |
| 1165 return 0; /* not a palettized surface */ | |
| 1166 } | |
| 1167 gotall = 1; | |
| 1168 palsize = 1 << screen->format->BitsPerPixel; | |
| 1169 if ( ncolors > (palsize - firstcolor) ) { | |
| 1170 ncolors = (palsize - firstcolor); | |
| 1171 gotall = 0; | |
| 1172 } | |
| 1173 | |
| 1174 if ( which & SDL_LOGPAL ) { | |
| 1175 /* | |
| 1176 * Logical palette change: The actual screen isn't affected, | |
| 1177 * but the internal colormap is altered so that the | |
| 1178 * interpretation of the pixel values (for blits etc) is | |
| 1179 * changed. | |
| 1180 */ | |
| 1181 SetPalette_logical(screen, colors, firstcolor, ncolors); | |
| 1182 } | |
| 1183 if ( which & SDL_PHYSPAL ) { | |
| 1184 SDL_VideoDevice *video = current_video; | |
| 1185 /* | |
| 1186 * Physical palette change: This doesn't affect the | |
| 1187 * program's idea of what the screen looks like, but changes | |
| 1188 * its actual appearance. | |
| 1189 */ | |
| 1190 if(!video) | |
| 1191 return gotall; /* video not yet initialized */ | |
| 1192 if(!video->physpal && !(which & SDL_LOGPAL) ) { | |
| 1193 /* Lazy physical palette allocation */ | |
| 1194 int size; | |
| 1195 SDL_Palette *pp = malloc(sizeof(*pp)); | |
| 1196 current_video->physpal = pp; | |
| 1197 pp->ncolors = pal->ncolors; | |
| 1198 size = pp->ncolors * sizeof(SDL_Color); | |
| 1199 pp->colors = malloc(size); | |
| 1200 memcpy(pp->colors, pal->colors, size); | |
| 1201 } | |
| 1202 if ( ! SetPalette_physical(screen, | |
| 1203 colors, firstcolor, ncolors) ) { | |
| 1204 gotall = 0; | |
| 1205 } | |
| 1206 } | |
| 1207 return gotall; | |
| 1208 } | |
| 1209 | |
| 1210 int SDL_SetColors(SDL_Surface *screen, SDL_Color *colors, int firstcolor, | |
| 1211 int ncolors) | |
| 1212 { | |
| 1213 return SDL_SetPalette(screen, SDL_LOGPAL | SDL_PHYSPAL, | |
| 1214 colors, firstcolor, ncolors); | |
| 1215 } | |
| 1216 | |
| 1217 /* | |
| 1218 * Clean up the video subsystem | |
| 1219 */ | |
| 1220 void SDL_VideoQuit (void) | |
| 1221 { | |
| 1222 SDL_Surface *ready_to_go; | |
| 1223 | |
| 1224 if ( current_video ) { | |
| 1225 SDL_VideoDevice *video = current_video; | |
| 1226 SDL_VideoDevice *this = current_video; | |
| 1227 | |
| 1228 /* Halt event processing before doing anything else */ | |
| 1229 SDL_StopEventLoop(); | |
| 1230 | |
| 1231 /* Clean up allocated window manager items */ | |
| 1232 if ( SDL_PublicSurface ) { | |
| 1233 SDL_PublicSurface = NULL; | |
| 1234 } | |
| 1235 SDL_CursorQuit(); | |
| 1236 | |
| 1237 /* Just in case... */ | |
| 1238 SDL_WM_GrabInputOff(); | |
| 1239 | |
| 1240 /* Clean up the system video */ | |
| 1241 video->VideoQuit(this); | |
| 1242 | |
| 1243 /* Free any lingering surfaces */ | |
| 1244 ready_to_go = SDL_ShadowSurface; | |
| 1245 SDL_ShadowSurface = NULL; | |
| 1246 SDL_FreeSurface(ready_to_go); | |
| 1247 if ( SDL_VideoSurface != NULL ) { | |
| 1248 ready_to_go = SDL_VideoSurface; | |
| 1249 SDL_VideoSurface = NULL; | |
| 1250 SDL_FreeSurface(ready_to_go); | |
| 1251 } | |
| 1252 SDL_PublicSurface = NULL; | |
| 1253 | |
| 1254 /* Clean up miscellaneous memory */ | |
| 1255 if ( video->physpal ) { | |
| 1256 free(video->physpal->colors); | |
| 1257 free(video->physpal); | |
| 1258 video->physpal = NULL; | |
| 1259 } | |
| 1260 if ( video->gammacols ) { | |
| 1261 free(video->gammacols); | |
| 1262 video->gammacols = NULL; | |
| 1263 } | |
| 1264 if ( video->gamma ) { | |
| 1265 free(video->gamma); | |
| 1266 video->gamma = NULL; | |
| 1267 } | |
|
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|
1268 if ( video->wm_title != NULL ) { |
|
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parents:
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diff
changeset
|
1269 free(video->wm_title); |
|
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diff
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|
1270 video->wm_title = NULL; |
| 0 | 1271 } |
|
58
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diff
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|
1272 if ( video->wm_icon != NULL ) { |
|
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diff
changeset
|
1273 free(video->wm_icon); |
|
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|
1274 video->wm_icon = NULL; |
| 0 | 1275 } |
| 1276 | |
| 1277 /* Finish cleaning up video subsystem */ | |
| 1278 video->free(this); | |
| 1279 current_video = NULL; | |
| 1280 } | |
| 1281 return; | |
| 1282 } | |
| 1283 | |
| 1284 /* Load the GL driver library */ | |
| 1285 int SDL_GL_LoadLibrary(const char *path) | |
| 1286 { | |
| 1287 SDL_VideoDevice *video = current_video; | |
| 1288 SDL_VideoDevice *this = current_video; | |
| 1289 int retval; | |
| 1290 | |
| 1291 retval = -1; | |
|
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diff
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|
1292 if ( video && video->GL_LoadLibrary ) { |
| 0 | 1293 retval = video->GL_LoadLibrary(this, path); |
| 1294 } else { | |
| 1295 SDL_SetError("No dynamic GL support in video driver"); | |
| 1296 } | |
| 1297 return(retval); | |
| 1298 } | |
| 1299 | |
| 1300 void *SDL_GL_GetProcAddress(const char* proc) | |
| 1301 { | |
| 1302 SDL_VideoDevice *video = current_video; | |
| 1303 SDL_VideoDevice *this = current_video; | |
| 1304 void *func; | |
| 1305 | |
| 1306 func = NULL; | |
| 1307 if ( video->GL_GetProcAddress ) { | |
| 1308 if ( video->gl_config.driver_loaded ) { | |
| 1309 func = video->GL_GetProcAddress(this, proc); | |
| 1310 } else { | |
| 1311 SDL_SetError("No GL driver has been loaded"); | |
| 1312 } | |
| 1313 } else { | |
| 1314 SDL_SetError("No dynamic GL support in video driver"); | |
| 1315 } | |
| 1316 return func; | |
| 1317 } | |
| 1318 | |
| 1319 /* Set the specified GL attribute for setting up a GL video mode */ | |
| 1320 int SDL_GL_SetAttribute( SDL_GLattr attr, int value ) | |
| 1321 { | |
| 1322 int retval; | |
| 1323 SDL_VideoDevice *video = current_video; | |
| 1324 | |
| 1325 retval = 0; | |
| 1326 switch (attr) { | |
| 1327 case SDL_GL_RED_SIZE: | |
| 1328 video->gl_config.red_size = value; | |
| 1329 break; | |
| 1330 case SDL_GL_GREEN_SIZE: | |
| 1331 video->gl_config.green_size = value; | |
| 1332 break; | |
| 1333 case SDL_GL_BLUE_SIZE: | |
| 1334 video->gl_config.blue_size = value; | |
| 1335 break; | |
| 1336 case SDL_GL_ALPHA_SIZE: | |
| 1337 video->gl_config.alpha_size = value; | |
| 1338 break; | |
| 1339 case SDL_GL_DOUBLEBUFFER: | |
| 1340 video->gl_config.double_buffer = value; | |
| 1341 break; | |
| 1342 case SDL_GL_BUFFER_SIZE: | |
| 1343 video->gl_config.buffer_size = value; | |
| 1344 break; | |
| 1345 case SDL_GL_DEPTH_SIZE: | |
| 1346 video->gl_config.depth_size = value; | |
| 1347 break; | |
| 1348 case SDL_GL_STENCIL_SIZE: | |
| 1349 video->gl_config.stencil_size = value; | |
| 1350 break; | |
| 1351 case SDL_GL_ACCUM_RED_SIZE: | |
| 1352 video->gl_config.accum_red_size = value; | |
| 1353 break; | |
| 1354 case SDL_GL_ACCUM_GREEN_SIZE: | |
| 1355 video->gl_config.accum_green_size = value; | |
| 1356 break; | |
| 1357 case SDL_GL_ACCUM_BLUE_SIZE: | |
| 1358 video->gl_config.accum_blue_size = value; | |
| 1359 break; | |
| 1360 case SDL_GL_ACCUM_ALPHA_SIZE: | |
| 1361 video->gl_config.accum_alpha_size = value; | |
| 1362 break; | |
| 1363 default: | |
| 1364 SDL_SetError("Unknown OpenGL attribute"); | |
| 1365 retval = -1; | |
| 1366 break; | |
| 1367 } | |
| 1368 return(retval); | |
| 1369 } | |
| 1370 | |
| 1371 /* Retrieve an attribute value from the windowing system. */ | |
| 1372 int SDL_GL_GetAttribute(SDL_GLattr attr, int* value) | |
| 1373 { | |
| 1374 int retval = -1; | |
| 1375 SDL_VideoDevice* video = current_video; | |
| 1376 SDL_VideoDevice* this = current_video; | |
| 1377 | |
| 1378 if ( video->GL_GetAttribute ) { | |
| 1379 retval = this->GL_GetAttribute(this, attr, value); | |
|
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1380 } else { |
|
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1381 *value = 0; |
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1382 SDL_SetError("GL_GetAttribute not supported"); |
| 0 | 1383 } |
| 1384 return retval; | |
| 1385 } | |
| 1386 | |
| 1387 /* Perform a GL buffer swap on the current GL context */ | |
| 1388 void SDL_GL_SwapBuffers(void) | |
| 1389 { | |
| 1390 SDL_VideoDevice *video = current_video; | |
| 1391 SDL_VideoDevice *this = current_video; | |
| 1392 | |
| 1393 if ( video->screen->flags & SDL_OPENGL ) { | |
| 1394 video->GL_SwapBuffers( this ); | |
| 1395 } | |
| 1396 } | |
| 1397 | |
| 1398 /* Update rects with locking */ | |
| 1399 void SDL_GL_UpdateRectsLock(SDL_VideoDevice* this, int numrects, SDL_Rect *rects) | |
| 1400 { | |
| 1401 SDL_GL_Lock(); | |
| 1402 SDL_GL_UpdateRects(numrects, rects); | |
| 1403 SDL_GL_Unlock(); | |
| 1404 } | |
| 1405 | |
| 1406 /* Update rects without state setting and changing (the caller is responsible for it) */ | |
| 1407 void SDL_GL_UpdateRects(int numrects, SDL_Rect *rects) | |
| 1408 { | |
| 1409 #ifdef HAVE_OPENGL | |
| 1410 SDL_VideoDevice *this = current_video; | |
| 1411 SDL_Rect update, tmp; | |
| 1412 int x, y, i; | |
| 1413 | |
| 1414 for ( i = 0; i < numrects; i++ ) | |
| 1415 { | |
| 1416 tmp.y = rects[i].y; | |
| 1417 tmp.h = rects[i].h; | |
| 1418 for ( y = 0; y <= rects[i].h / 256; y++ ) | |
| 1419 { | |
| 1420 tmp.x = rects[i].x; | |
| 1421 tmp.w = rects[i].w; | |
| 1422 for ( x = 0; x <= rects[i].w / 256; x++ ) | |
| 1423 { | |
| 1424 update.x = tmp.x; | |
| 1425 update.y = tmp.y; | |
| 1426 update.w = tmp.w; | |
| 1427 update.h = tmp.h; | |
| 1428 | |
| 1429 if ( update.w > 256 ) | |
| 1430 update.w = 256; | |
| 1431 | |
| 1432 if ( update.h > 256 ) | |
| 1433 update.h = 256; | |
| 1434 | |
| 1435 this->glFlush(); | |
| 1436 this->glTexSubImage2D( | |
| 1437 GL_TEXTURE_2D, | |
| 1438 0, | |
| 1439 0, | |
| 1440 0, | |
| 1441 update.w, | |
| 1442 update.h, | |
| 1443 this->is_32bit? GL_RGBA : GL_RGB, | |
| 1444 #ifdef GL_VERSION_1_2 | |
| 1445 this->is_32bit ? GL_UNSIGNED_BYTE : GL_UNSIGNED_SHORT_5_6_5, | |
| 1446 #else | |
| 1447 GL_UNSIGNED_BYTE, | |
| 1448 #endif | |
| 1449 (Uint8 *)this->screen->pixels + | |
| 1450 this->screen->format->BytesPerPixel * update.x + | |
| 1451 update.y * this->screen->pitch ); | |
| 1452 | |
| 1453 this->glFlush(); | |
| 1454 /* | |
| 1455 * Note the parens around the function name: | |
| 1456 * This is because some OpenGL implementations define glTexCoord etc | |
| 1457 * as macros, and we don't want them expanded here. | |
| 1458 */ | |
| 1459 this->glBegin(GL_TRIANGLE_STRIP); | |
| 1460 (this->glTexCoord2f)( 0.0, 0.0 ); | |
| 1461 (this->glVertex2i)( update.x, update.y ); | |
| 1462 (this->glTexCoord2f)( (float)(update.w / 256.0), 0.0 ); | |
| 1463 (this->glVertex2i)( update.x + update.w, update.y ); | |
| 1464 (this->glTexCoord2f)( 0.0, (float)(update.h / 256.0) ); | |
| 1465 (this->glVertex2i)( update.x, update.y + update.h ); | |
| 1466 (this->glTexCoord2f)( (float)(update.w / 256.0), (float)(update.h / 256.0) ); | |
| 1467 (this->glVertex2i)( update.x + update.w , update.y + update.h ); | |
| 1468 this->glEnd(); | |
| 1469 | |
| 1470 tmp.x += 256; | |
| 1471 tmp.w -= 256; | |
| 1472 } | |
| 1473 tmp.y += 256; | |
| 1474 tmp.h -= 256; | |
| 1475 } | |
| 1476 } | |
| 1477 #endif | |
| 1478 } | |
| 1479 | |
| 1480 /* Lock == save current state */ | |
| 1481 void SDL_GL_Lock() | |
| 1482 { | |
| 1483 #ifdef HAVE_OPENGL | |
| 1484 lock_count--; | |
| 1485 if (lock_count==-1) | |
| 1486 { | |
| 1487 SDL_VideoDevice *this = current_video; | |
| 1488 | |
| 1489 this->glPushAttrib( GL_ALL_ATTRIB_BITS ); /* TODO: narrow range of what is saved */ | |
|
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1490 #ifdef GL_CLIENT_PIXEL_STORE_BIT |
| 0 | 1491 this->glPushClientAttrib( GL_CLIENT_PIXEL_STORE_BIT ); |
|
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|
1492 #endif |
| 0 | 1493 |
| 1494 this->glEnable(GL_TEXTURE_2D); | |
| 1495 this->glEnable(GL_BLEND); | |
| 1496 this->glDisable(GL_FOG); | |
| 1497 this->glDisable(GL_ALPHA_TEST); | |
| 1498 this->glDisable(GL_DEPTH_TEST); | |
| 1499 this->glDisable(GL_SCISSOR_TEST); | |
| 1500 this->glDisable(GL_STENCIL_TEST); | |
| 1501 this->glDisable(GL_CULL_FACE); | |
| 1502 | |
| 1503 this->glBindTexture( GL_TEXTURE_2D, this->texture ); | |
| 1504 this->glTexEnvf( GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE ); | |
| 1505 this->glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST ); | |
| 1506 this->glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST ); | |
| 1507 this->glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT ); | |
| 1508 this->glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT ); | |
| 1509 | |
| 1510 this->glPixelStorei( GL_UNPACK_ROW_LENGTH, this->screen->pitch / this->screen->format->BytesPerPixel ); | |
| 1511 this->glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA); | |
| 1512 (this->glColor4f)(1.0, 1.0, 1.0, 1.0); /* Solaris workaround */ | |
| 1513 | |
| 1514 this->glViewport(0, 0, this->screen->w, this->screen->h); | |
| 1515 this->glMatrixMode(GL_PROJECTION); | |
| 1516 this->glPushMatrix(); | |
| 1517 this->glLoadIdentity(); | |
| 1518 | |
| 1519 this->glOrtho(0.0, (GLdouble) this->screen->w, (GLdouble) this->screen->h, 0.0, 0.0, 1.0); | |
| 1520 | |
| 1521 this->glMatrixMode(GL_MODELVIEW); | |
| 1522 this->glPushMatrix(); | |
| 1523 this->glLoadIdentity(); | |
| 1524 } | |
| 1525 #endif | |
| 1526 } | |
| 1527 | |
| 1528 /* Unlock == restore saved state */ | |
| 1529 void SDL_GL_Unlock() | |
| 1530 { | |
| 1531 #ifdef HAVE_OPENGL | |
| 1532 lock_count++; | |
| 1533 if (lock_count==0) | |
| 1534 { | |
| 1535 SDL_VideoDevice *this = current_video; | |
| 1536 | |
| 1537 this->glPopMatrix(); | |
| 1538 this->glMatrixMode(GL_PROJECTION); | |
| 1539 this->glPopMatrix(); | |
| 1540 | |
| 1541 this->glPopClientAttrib(); | |
| 1542 this->glPopAttrib(); | |
| 1543 } | |
| 1544 #endif | |
| 1545 } | |
| 1546 | |
| 1547 /* | |
| 1548 * Sets/Gets the title and icon text of the display window, if any. | |
| 1549 */ | |
| 1550 void SDL_WM_SetCaption (const char *title, const char *icon) | |
| 1551 { | |
| 1552 SDL_VideoDevice *video = current_video; | |
| 1553 SDL_VideoDevice *this = current_video; | |
| 1554 | |
|
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1555 if ( video ) { |
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1556 if ( title ) { |
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1557 if ( video->wm_title ) { |
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1558 free(video->wm_title); |
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1559 } |
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1560 video->wm_title = (char *)malloc(strlen(title)+1); |
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1561 if ( video->wm_title != NULL ) { |
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1562 strcpy(video->wm_title, title); |
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1563 } |
| 0 | 1564 } |
|
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1565 if ( icon ) { |
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1566 if ( video->wm_icon ) { |
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1567 free(video->wm_icon); |
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1568 } |
|
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1569 video->wm_icon = (char *)malloc(strlen(icon)+1); |
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1570 if ( video->wm_icon != NULL ) { |
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1571 strcpy(video->wm_icon, icon); |
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1572 } |
| 0 | 1573 } |
|
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1574 if ( (title || icon) && (video->SetCaption != NULL) ) { |
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1575 video->SetCaption(this, video->wm_title,video->wm_icon); |
| 0 | 1576 } |
| 1577 } | |
| 1578 } | |
| 1579 void SDL_WM_GetCaption (char **title, char **icon) | |
| 1580 { | |
|
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1581 SDL_VideoDevice *video = current_video; |
|
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1582 |
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1583 if ( video ) { |
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1584 if ( title ) { |
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1585 *title = video->wm_title; |
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1586 } |
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1587 if ( icon ) { |
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1588 *icon = video->wm_icon; |
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1589 } |
| 0 | 1590 } |
| 1591 } | |
| 1592 | |
| 1593 /* Utility function used by SDL_WM_SetIcon() */ | |
| 1594 static void CreateMaskFromColorKey(SDL_Surface *icon, Uint8 *mask) | |
| 1595 { | |
| 1596 int x, y; | |
| 1597 Uint32 colorkey; | |
| 1598 #define SET_MASKBIT(icon, x, y, mask) \ | |
| 1599 mask[(y*((icon->w+7)/8))+(x/8)] &= ~(0x01<<(7-(x%8))) | |
| 1600 | |
| 1601 colorkey = icon->format->colorkey; | |
| 1602 switch (icon->format->BytesPerPixel) { | |
| 1603 case 1: { Uint8 *pixels; | |
| 1604 for ( y=0; y<icon->h; ++y ) { | |
| 1605 pixels = (Uint8 *)icon->pixels + y*icon->pitch; | |
| 1606 for ( x=0; x<icon->w; ++x ) { | |
| 1607 if ( *pixels++ == colorkey ) { | |
| 1608 SET_MASKBIT(icon, x, y, mask); | |
| 1609 } | |
| 1610 } | |
| 1611 } | |
| 1612 } | |
| 1613 break; | |
| 1614 | |
| 1615 case 2: { Uint16 *pixels; | |
| 1616 for ( y=0; y<icon->h; ++y ) { | |
| 1617 pixels = (Uint16 *)icon->pixels + | |
| 1618 y*icon->pitch/2; | |
| 1619 for ( x=0; x<icon->w; ++x ) { | |
| 1620 if ( *pixels++ == colorkey ) { | |
| 1621 SET_MASKBIT(icon, x, y, mask); | |
| 1622 } | |
| 1623 } | |
| 1624 } | |
| 1625 } | |
| 1626 break; | |
| 1627 | |
| 1628 case 4: { Uint32 *pixels; | |
| 1629 for ( y=0; y<icon->h; ++y ) { | |
| 1630 pixels = (Uint32 *)icon->pixels + | |
| 1631 y*icon->pitch/4; | |
| 1632 for ( x=0; x<icon->w; ++x ) { | |
| 1633 if ( *pixels++ == colorkey ) { | |
| 1634 SET_MASKBIT(icon, x, y, mask); | |
| 1635 } | |
| 1636 } | |
| 1637 } | |
| 1638 } | |
| 1639 break; | |
| 1640 } | |
| 1641 } | |
| 1642 | |
| 1643 /* | |
| 1644 * Sets the window manager icon for the display window. | |
| 1645 */ | |
| 1646 void SDL_WM_SetIcon (SDL_Surface *icon, Uint8 *mask) | |
| 1647 { | |
| 1648 SDL_VideoDevice *video = current_video; | |
| 1649 SDL_VideoDevice *this = current_video; | |
| 1650 | |
| 1651 if ( icon && video->SetIcon ) { | |
| 1652 /* Generate a mask if necessary, and create the icon! */ | |
| 1653 if ( mask == NULL ) { | |
| 1654 int mask_len = icon->h*(icon->w+7)/8; | |
| 1655 mask = (Uint8 *)malloc(mask_len); | |
| 1656 if ( mask == NULL ) { | |
| 1657 return; | |
| 1658 } | |
| 1659 memset(mask, ~0, mask_len); | |
| 1660 if ( icon->flags & SDL_SRCCOLORKEY ) { | |
| 1661 CreateMaskFromColorKey(icon, mask); | |
| 1662 } | |
| 1663 video->SetIcon(video, icon, mask); | |
| 1664 free(mask); | |
| 1665 } else { | |
| 1666 video->SetIcon(this, icon, mask); | |
| 1667 } | |
| 1668 } | |
| 1669 } | |
| 1670 | |
| 1671 /* | |
| 1672 * Grab or ungrab the keyboard and mouse input. | |
| 1673 * This function returns the final grab mode after calling the | |
| 1674 * driver dependent function. | |
| 1675 */ | |
| 1676 static SDL_GrabMode SDL_WM_GrabInputRaw(SDL_GrabMode mode) | |
| 1677 { | |
| 1678 SDL_VideoDevice *video = current_video; | |
| 1679 SDL_VideoDevice *this = current_video; | |
| 1680 | |
| 1681 /* Only do something if we have support for grabs */ | |
| 1682 if ( video->GrabInput == NULL ) { | |
| 1683 return(video->input_grab); | |
| 1684 } | |
| 1685 | |
| 1686 /* If the final grab mode if off, only then do we actually grab */ | |
| 1687 #ifdef DEBUG_GRAB | |
| 1688 printf("SDL_WM_GrabInputRaw(%d) ... ", mode); | |
| 1689 #endif | |
| 1690 if ( mode == SDL_GRAB_OFF ) { | |
| 1691 if ( video->input_grab != SDL_GRAB_OFF ) { | |
| 1692 mode = video->GrabInput(this, mode); | |
| 1693 } | |
| 1694 } else { | |
| 1695 if ( video->input_grab == SDL_GRAB_OFF ) { | |
| 1696 mode = video->GrabInput(this, mode); | |
| 1697 } | |
| 1698 } | |
| 1699 if ( mode != video->input_grab ) { | |
| 1700 video->input_grab = mode; | |
| 1701 if ( video->CheckMouseMode ) { | |
| 1702 video->CheckMouseMode(this); | |
| 1703 } | |
| 1704 } | |
| 1705 #ifdef DEBUG_GRAB | |
| 1706 printf("Final mode %d\n", video->input_grab); | |
| 1707 #endif | |
| 1708 | |
| 1709 /* Return the final grab state */ | |
| 1710 if ( mode >= SDL_GRAB_FULLSCREEN ) { | |
| 1711 mode -= SDL_GRAB_FULLSCREEN; | |
| 1712 } | |
| 1713 return(mode); | |
| 1714 } | |
| 1715 SDL_GrabMode SDL_WM_GrabInput(SDL_GrabMode mode) | |
| 1716 { | |
| 1717 SDL_VideoDevice *video = current_video; | |
| 1718 | |
|
11
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1719 /* If the video isn't initialized yet, we can't do anything */ |
|
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1720 if ( ! video ) { |
|
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1721 return SDL_GRAB_OFF; |
|
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1722 } |
| 0 | 1723 |
| 1724 /* Return the current mode on query */ | |
| 1725 if ( mode == SDL_GRAB_QUERY ) { | |
| 1726 mode = video->input_grab; | |
| 1727 if ( mode >= SDL_GRAB_FULLSCREEN ) { | |
| 1728 mode -= SDL_GRAB_FULLSCREEN; | |
| 1729 } | |
| 1730 return(mode); | |
| 1731 } | |
| 1732 | |
| 1733 #ifdef DEBUG_GRAB | |
| 1734 printf("SDL_WM_GrabInput(%d) ... ", mode); | |
| 1735 #endif | |
| 1736 /* If the video surface is fullscreen, we always grab */ | |
| 1737 if ( mode >= SDL_GRAB_FULLSCREEN ) { | |
| 1738 mode -= SDL_GRAB_FULLSCREEN; | |
| 1739 } | |
| 1740 if ( SDL_VideoSurface && (SDL_VideoSurface->flags & SDL_FULLSCREEN) ) { | |
| 1741 mode += SDL_GRAB_FULLSCREEN; | |
| 1742 } | |
| 1743 return(SDL_WM_GrabInputRaw(mode)); | |
| 1744 } | |
| 1745 static SDL_GrabMode SDL_WM_GrabInputOff(void) | |
| 1746 { | |
| 1747 SDL_GrabMode mode; | |
| 1748 | |
| 1749 /* First query the current grab state */ | |
| 1750 mode = SDL_WM_GrabInput(SDL_GRAB_QUERY); | |
| 1751 | |
| 1752 /* Now explicitly turn off input grab */ | |
| 1753 SDL_WM_GrabInputRaw(SDL_GRAB_OFF); | |
| 1754 | |
| 1755 /* Return the old state */ | |
| 1756 return(mode); | |
| 1757 } | |
| 1758 | |
| 1759 /* | |
| 1760 * Iconify the window in window managed environments. | |
| 1761 * A successful iconification will result in an SDL_APPACTIVE loss event. | |
| 1762 */ | |
| 1763 int SDL_WM_IconifyWindow(void) | |
| 1764 { | |
| 1765 SDL_VideoDevice *video = current_video; | |
| 1766 SDL_VideoDevice *this = current_video; | |
| 1767 int retval; | |
| 1768 | |
| 1769 retval = 0; | |
| 1770 if ( video->IconifyWindow ) { | |
| 1771 retval = video->IconifyWindow(this); | |
| 1772 } | |
| 1773 return(retval); | |
| 1774 } | |
| 1775 | |
| 1776 /* | |
| 1777 * Toggle fullscreen mode | |
| 1778 */ | |
| 1779 int SDL_WM_ToggleFullScreen(SDL_Surface *surface) | |
| 1780 { | |
| 1781 SDL_VideoDevice *video = current_video; | |
| 1782 SDL_VideoDevice *this = current_video; | |
| 1783 int toggled; | |
| 1784 | |
| 1785 toggled = 0; | |
| 1786 if ( SDL_PublicSurface && (surface == SDL_PublicSurface) && | |
| 1787 video->ToggleFullScreen ) { | |
| 1788 if ( surface->flags & SDL_FULLSCREEN ) { | |
| 1789 toggled = video->ToggleFullScreen(this, 0); | |
| 1790 if ( toggled ) { | |
| 1791 SDL_VideoSurface->flags &= ~SDL_FULLSCREEN; | |
| 1792 SDL_PublicSurface->flags &= ~SDL_FULLSCREEN; | |
| 1793 } | |
| 1794 } else { | |
| 1795 toggled = video->ToggleFullScreen(this, 1); | |
| 1796 if ( toggled ) { | |
| 1797 SDL_VideoSurface->flags |= SDL_FULLSCREEN; | |
| 1798 SDL_PublicSurface->flags |= SDL_FULLSCREEN; | |
| 1799 } | |
| 1800 } | |
| 1801 /* Double-check the grab state inside SDL_WM_GrabInput() */ | |
| 1802 if ( toggled ) { | |
| 1803 SDL_WM_GrabInput(video->input_grab); | |
| 1804 } | |
| 1805 } | |
| 1806 return(toggled); | |
| 1807 } | |
| 1808 | |
| 1809 /* | |
| 1810 * Get some platform dependent window manager information | |
| 1811 */ | |
| 1812 int SDL_GetWMInfo (SDL_SysWMinfo *info) | |
| 1813 { | |
| 1814 SDL_VideoDevice *video = current_video; | |
| 1815 SDL_VideoDevice *this = current_video; | |
| 1816 | |
| 1817 if ( video && video->GetWMInfo ) { | |
| 1818 return(video->GetWMInfo(this, info)); | |
| 1819 } else { | |
| 1820 return(0); | |
| 1821 } | |
| 1822 } |