Mercurial > sdl-ios-xcode
annotate src/video/SDL_video.c @ 288:2f5a6062db86
Updated for Watcom C++ and LCC compilers
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Thu, 28 Feb 2002 00:28:26 +0000 |
| parents | b42d80e73896 |
| children | f6ffac90895c |
| 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 | |
|
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20 slouken@libsdl.org |
| 0 | 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 | |
|
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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 |
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108 #ifdef ENABLE_XBIOS |
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109 &XBIOS_bootstrap, |
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110 #endif |
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111 #ifdef ENABLE_GEM |
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112 &GEM_bootstrap, |
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113 #endif |
| 0 | 114 NULL |
| 115 }; | |
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116 |
| 0 | 117 SDL_VideoDevice *current_video = NULL; |
| 118 | |
| 119 /* Various local functions */ | |
| 120 int SDL_VideoInit(const char *driver_name, Uint32 flags); | |
| 121 void SDL_VideoQuit(void); | |
| 122 void SDL_GL_UpdateRectsLock(SDL_VideoDevice* this, int numrects, SDL_Rect* rects); | |
| 123 | |
| 124 static SDL_GrabMode SDL_WM_GrabInputOff(void); | |
| 125 #ifdef HAVE_OPENGL | |
| 126 static int lock_count = 0; | |
| 127 #endif | |
| 128 | |
| 129 | |
| 130 /* | |
| 131 * Initialize the video and event subsystems -- determine native pixel format | |
| 132 */ | |
| 133 int SDL_VideoInit (const char *driver_name, Uint32 flags) | |
| 134 { | |
| 135 SDL_VideoDevice *video; | |
| 136 int index; | |
| 137 int i; | |
| 138 SDL_PixelFormat vformat; | |
| 139 Uint32 video_flags; | |
| 140 | |
| 141 /* Toggle the event thread flags, based on OS requirements */ | |
| 142 #if defined(MUST_THREAD_EVENTS) | |
| 143 flags |= SDL_INIT_EVENTTHREAD; | |
| 144 #elif defined(CANT_THREAD_EVENTS) | |
| 145 if ( (flags & SDL_INIT_EVENTTHREAD) == SDL_INIT_EVENTTHREAD ) { | |
| 146 SDL_SetError("OS doesn't support threaded events"); | |
| 147 return(-1); | |
| 148 } | |
| 149 #endif | |
| 150 | |
| 151 /* Check to make sure we don't overwrite 'current_video' */ | |
| 152 if ( current_video != NULL ) { | |
| 153 SDL_VideoQuit(); | |
| 154 } | |
| 155 | |
| 156 /* Select the proper video driver */ | |
| 157 index = 0; | |
| 158 video = NULL; | |
| 159 if ( driver_name != NULL ) { | |
| 160 #if 0 /* This will be replaced with a better driver selection API */ | |
| 161 if ( strrchr(driver_name, ':') != NULL ) { | |
| 162 index = atoi(strrchr(driver_name, ':')+1); | |
| 163 } | |
| 164 #endif | |
| 165 for ( i=0; bootstrap[i]; ++i ) { | |
| 166 if ( strncmp(bootstrap[i]->name, driver_name, | |
| 167 strlen(bootstrap[i]->name)) == 0 ) { | |
| 168 if ( bootstrap[i]->available() ) { | |
| 169 video = bootstrap[i]->create(index); | |
| 170 break; | |
| 171 } | |
| 172 } | |
| 173 } | |
| 174 } else { | |
| 175 for ( i=0; bootstrap[i]; ++i ) { | |
| 176 if ( bootstrap[i]->available() ) { | |
| 177 video = bootstrap[i]->create(index); | |
| 178 if ( video != NULL ) { | |
| 179 break; | |
| 180 } | |
| 181 } | |
| 182 } | |
| 183 } | |
| 184 if ( video == NULL ) { | |
| 185 SDL_SetError("No available video device"); | |
| 186 return(-1); | |
| 187 } | |
| 188 current_video = video; | |
| 189 current_video->name = bootstrap[i]->name; | |
| 190 | |
| 191 /* Do some basic variable initialization */ | |
| 192 video->screen = NULL; | |
| 193 video->shadow = NULL; | |
| 194 video->visible = NULL; | |
| 195 video->physpal = NULL; | |
| 196 video->gammacols = NULL; | |
| 197 video->gamma = NULL; | |
| 198 video->wm_title = NULL; | |
| 199 video->wm_icon = NULL; | |
| 200 video->offset_x = 0; | |
| 201 video->offset_y = 0; | |
| 202 memset(&video->info, 0, (sizeof video->info)); | |
| 203 | |
| 204 /* Set some very sane GL defaults */ | |
| 205 video->gl_config.driver_loaded = 0; | |
| 206 video->gl_config.dll_handle = NULL; | |
| 207 video->gl_config.red_size = 5; | |
| 208 #if 1 /* This seems to work on more video cards, as a default */ | |
| 209 video->gl_config.green_size = 5; | |
| 210 #else | |
| 211 video->gl_config.green_size = 6; | |
| 212 #endif | |
| 213 video->gl_config.blue_size = 5; | |
| 214 video->gl_config.alpha_size = 0; | |
| 215 video->gl_config.buffer_size = 0; | |
| 216 video->gl_config.depth_size = 16; | |
| 217 video->gl_config.stencil_size = 0; | |
| 218 video->gl_config.double_buffer = 1; | |
| 219 video->gl_config.accum_red_size = 0; | |
| 220 video->gl_config.accum_green_size = 0; | |
| 221 video->gl_config.accum_blue_size = 0; | |
| 222 video->gl_config.accum_alpha_size = 0; | |
| 223 | |
| 224 /* Initialize the video subsystem */ | |
| 225 memset(&vformat, 0, sizeof(vformat)); | |
| 226 if ( video->VideoInit(video, &vformat) < 0 ) { | |
| 227 SDL_VideoQuit(); | |
| 228 return(-1); | |
| 229 } | |
| 230 | |
| 231 /* Create a zero sized video surface of the appropriate format */ | |
| 232 video_flags = SDL_SWSURFACE; | |
| 233 SDL_VideoSurface = SDL_CreateRGBSurface(video_flags, 0, 0, | |
| 234 vformat.BitsPerPixel, | |
| 235 vformat.Rmask, vformat.Gmask, vformat.Bmask, 0); | |
| 236 if ( SDL_VideoSurface == NULL ) { | |
| 237 SDL_VideoQuit(); | |
| 238 return(-1); | |
| 239 } | |
| 240 SDL_PublicSurface = NULL; /* Until SDL_SetVideoMode() */ | |
| 241 | |
| 242 #if 0 /* Don't change the current palette - may be used by other programs. | |
| 243 * The application can't do anything with the display surface until | |
| 244 * a video mode has been set anyway. :) | |
| 245 */ | |
| 246 /* If we have a palettized surface, create a default palette */ | |
| 247 if ( SDL_VideoSurface->format->palette ) { | |
| 248 SDL_PixelFormat *vf = SDL_VideoSurface->format; | |
| 249 SDL_DitherColors(vf->palette->colors, vf->BitsPerPixel); | |
| 250 video->SetColors(video, | |
| 251 0, vf->palette->ncolors, vf->palette->colors); | |
| 252 } | |
| 253 #endif | |
| 254 video->info.vfmt = SDL_VideoSurface->format; | |
| 255 | |
| 256 /* Start the event loop */ | |
| 257 if ( SDL_StartEventLoop(flags) < 0 ) { | |
| 258 SDL_VideoQuit(); | |
| 259 return(-1); | |
| 260 } | |
| 261 SDL_CursorInit(flags & SDL_INIT_EVENTTHREAD); | |
| 262 | |
| 263 /* We're ready to go! */ | |
| 264 return(0); | |
| 265 } | |
| 266 | |
| 267 char *SDL_VideoDriverName(char *namebuf, int maxlen) | |
| 268 { | |
| 269 if ( current_video != NULL ) { | |
| 270 strncpy(namebuf, current_video->name, maxlen-1); | |
| 271 namebuf[maxlen-1] = '\0'; | |
| 272 return(namebuf); | |
| 273 } | |
| 274 return(NULL); | |
| 275 } | |
| 276 | |
| 277 /* | |
| 278 * Get the current display surface | |
| 279 */ | |
| 280 SDL_Surface *SDL_GetVideoSurface(void) | |
| 281 { | |
| 282 SDL_Surface *visible; | |
| 283 | |
| 284 visible = NULL; | |
| 285 if ( current_video ) { | |
| 286 visible = current_video->visible; | |
| 287 } | |
| 288 return(visible); | |
| 289 } | |
| 290 | |
| 291 /* | |
| 292 * Get the current information about the video hardware | |
| 293 */ | |
| 294 const SDL_VideoInfo *SDL_GetVideoInfo(void) | |
| 295 { | |
| 296 const SDL_VideoInfo *info; | |
| 297 | |
| 298 info = NULL; | |
| 299 if ( current_video ) { | |
| 300 info = ¤t_video->info; | |
| 301 } | |
| 302 return(info); | |
| 303 } | |
| 304 | |
| 305 /* | |
| 306 * Return a pointer to an array of available screen dimensions for the | |
| 307 * given format, sorted largest to smallest. Returns NULL if there are | |
| 308 * no dimensions available for a particular format, or (SDL_Rect **)-1 | |
| 309 * if any dimension is okay for the given format. If 'format' is NULL, | |
| 310 * the mode list will be for the format given by SDL_GetVideoInfo()->vfmt | |
| 311 */ | |
| 312 SDL_Rect ** SDL_ListModes (SDL_PixelFormat *format, Uint32 flags) | |
| 313 { | |
| 314 SDL_VideoDevice *video = current_video; | |
| 315 SDL_VideoDevice *this = current_video; | |
| 316 SDL_Rect **modes; | |
| 317 | |
| 318 modes = NULL; | |
| 319 if ( SDL_VideoSurface ) { | |
| 320 if ( format == NULL ) { | |
| 321 format = SDL_VideoSurface->format; | |
| 322 } | |
| 323 modes = video->ListModes(this, format, flags); | |
| 324 } | |
| 325 return(modes); | |
| 326 } | |
| 327 | |
| 328 /* | |
| 329 * Check to see if a particular video mode is supported. | |
| 330 * It returns 0 if the requested mode is not supported under any bit depth, | |
| 331 * or returns the bits-per-pixel of the closest available mode with the | |
| 332 * given width and height. If this bits-per-pixel is different from the | |
| 333 * one used when setting the video mode, SDL_SetVideoMode() will succeed, | |
| 334 * but will emulate the requested bits-per-pixel with a shadow surface. | |
| 335 */ | |
| 336 static Uint8 SDL_closest_depths[4][8] = { | |
| 337 /* 8 bit closest depth ordering */ | |
| 338 { 0, 8, 16, 15, 32, 24, 0, 0 }, | |
| 339 /* 15,16 bit closest depth ordering */ | |
| 340 { 0, 16, 15, 32, 24, 8, 0, 0 }, | |
| 341 /* 24 bit closest depth ordering */ | |
| 342 { 0, 24, 32, 16, 15, 8, 0, 0 }, | |
| 343 /* 32 bit closest depth ordering */ | |
| 344 { 0, 32, 16, 15, 24, 8, 0, 0 } | |
| 345 }; | |
| 346 | |
| 347 int SDL_VideoModeOK (int width, int height, int bpp, Uint32 flags) | |
| 348 { | |
| 349 int table, b, i; | |
| 350 int supported; | |
| 351 SDL_PixelFormat format; | |
| 352 SDL_Rect **sizes; | |
| 353 | |
| 354 /* Currently 1 and 4 bpp are not supported */ | |
| 355 if ( bpp < 8 || bpp > 32 ) { | |
| 356 return(0); | |
| 357 } | |
| 358 if ( (width == 0) || (height == 0) ) { | |
| 359 return(0); | |
| 360 } | |
| 361 | |
| 362 /* Search through the list valid of modes */ | |
| 363 memset(&format, 0, sizeof(format)); | |
| 364 supported = 0; | |
| 365 table = ((bpp+7)/8)-1; | |
| 366 SDL_closest_depths[table][0] = bpp; | |
| 367 SDL_closest_depths[table][7] = 0; | |
| 368 for ( b = 0; !supported && SDL_closest_depths[table][b]; ++b ) { | |
| 369 format.BitsPerPixel = SDL_closest_depths[table][b]; | |
| 370 sizes = SDL_ListModes(&format, flags); | |
| 371 if ( sizes == (SDL_Rect **)0 ) { | |
| 372 /* No sizes supported at this bit-depth */ | |
| 373 continue; | |
| 374 } else | |
| 375 #ifdef macintosh /* MPW optimization bug? */ | |
| 376 if ( (sizes == (SDL_Rect **)0xFFFFFFFF) || | |
| 377 #else | |
| 378 if ( (sizes == (SDL_Rect **)-1) || | |
| 379 #endif | |
| 380 current_video->handles_any_size ) { | |
| 381 /* Any size supported at this bit-depth */ | |
| 382 supported = 1; | |
| 383 continue; | |
| 384 } else | |
| 385 for ( i=0; sizes[i]; ++i ) { | |
| 386 if ((sizes[i]->w == width) && (sizes[i]->h == height)) { | |
| 387 supported = 1; | |
| 388 break; | |
| 389 } | |
| 390 } | |
| 391 } | |
| 392 if ( supported ) { | |
| 393 --b; | |
| 394 return(SDL_closest_depths[table][b]); | |
| 395 } else { | |
| 396 return(0); | |
| 397 } | |
| 398 } | |
| 399 | |
| 400 /* | |
| 401 * Get the closest non-emulated video mode to the one requested | |
| 402 */ | |
| 403 static int SDL_GetVideoMode (int *w, int *h, int *BitsPerPixel, Uint32 flags) | |
| 404 { | |
| 405 int table, b, i; | |
| 406 int supported; | |
| 407 int native_bpp; | |
| 408 SDL_PixelFormat format; | |
| 409 SDL_Rect **sizes; | |
| 410 | |
| 411 /* Try the original video mode, get the closest depth */ | |
| 412 native_bpp = SDL_VideoModeOK(*w, *h, *BitsPerPixel, flags); | |
| 413 if ( native_bpp == *BitsPerPixel ) { | |
| 414 return(1); | |
| 415 } | |
| 416 if ( native_bpp > 0 ) { | |
| 417 *BitsPerPixel = native_bpp; | |
| 418 return(1); | |
| 419 } | |
| 420 | |
| 421 /* No exact size match at any depth, look for closest match */ | |
| 422 memset(&format, 0, sizeof(format)); | |
| 423 supported = 0; | |
| 424 table = ((*BitsPerPixel+7)/8)-1; | |
| 425 SDL_closest_depths[table][0] = *BitsPerPixel; | |
| 426 SDL_closest_depths[table][7] = SDL_VideoSurface->format->BitsPerPixel; | |
| 427 for ( b = 0; !supported && SDL_closest_depths[table][b]; ++b ) { | |
| 428 format.BitsPerPixel = SDL_closest_depths[table][b]; | |
| 429 sizes = SDL_ListModes(&format, flags); | |
| 430 if ( sizes == (SDL_Rect **)0 ) { | |
| 431 /* No sizes supported at this bit-depth */ | |
| 432 continue; | |
| 433 } | |
| 434 for ( i=0; sizes[i]; ++i ) { | |
| 435 if ((sizes[i]->w < *w) || (sizes[i]->h < *h)) { | |
| 436 if ( i > 0 ) { | |
| 437 --i; | |
| 438 *w = sizes[i]->w; | |
| 439 *h = sizes[i]->h; | |
| 440 *BitsPerPixel = SDL_closest_depths[table][b]; | |
| 441 supported = 1; | |
| 442 } else { | |
| 443 /* Largest mode too small... */; | |
| 444 } | |
| 445 break; | |
| 446 } | |
| 447 } | |
| 448 if ( (i > 0) && ! sizes[i] ) { | |
| 449 /* The smallest mode was larger than requested, OK */ | |
| 450 --i; | |
| 451 *w = sizes[i]->w; | |
| 452 *h = sizes[i]->h; | |
| 453 *BitsPerPixel = SDL_closest_depths[table][b]; | |
| 454 supported = 1; | |
| 455 } | |
| 456 } | |
| 457 if ( ! supported ) { | |
| 458 SDL_SetError("No video mode large enough for %dx%d", *w, *h); | |
| 459 } | |
| 460 return(supported); | |
| 461 } | |
| 462 | |
| 463 /* This should probably go somewhere else -- like SDL_surface.c */ | |
| 464 static void SDL_ClearSurface(SDL_Surface *surface) | |
| 465 { | |
| 466 Uint32 black; | |
| 467 | |
| 468 black = SDL_MapRGB(surface->format, 0, 0, 0); | |
| 469 SDL_FillRect(surface, NULL, black); | |
| 470 if ((surface->flags&SDL_HWSURFACE) && (surface->flags&SDL_DOUBLEBUF)) { | |
| 471 SDL_Flip(surface); | |
| 472 SDL_FillRect(surface, NULL, black); | |
| 473 } | |
| 474 SDL_Flip(surface); | |
| 475 } | |
| 476 | |
| 477 /* | |
| 478 * Create a shadow surface suitable for fooling the app. :-) | |
| 479 */ | |
| 480 static void SDL_CreateShadowSurface(int depth) | |
| 481 { | |
| 482 Uint32 Rmask, Gmask, Bmask; | |
| 483 | |
| 484 /* Allocate the shadow surface */ | |
| 485 if ( depth == (SDL_VideoSurface->format)->BitsPerPixel ) { | |
| 486 Rmask = (SDL_VideoSurface->format)->Rmask; | |
| 487 Gmask = (SDL_VideoSurface->format)->Gmask; | |
| 488 Bmask = (SDL_VideoSurface->format)->Bmask; | |
| 489 } else { | |
| 490 Rmask = Gmask = Bmask = 0; | |
| 491 } | |
| 492 SDL_ShadowSurface = SDL_CreateRGBSurface(SDL_SWSURFACE, | |
| 493 SDL_VideoSurface->w, SDL_VideoSurface->h, | |
| 494 depth, Rmask, Gmask, Bmask, 0); | |
| 495 if ( SDL_ShadowSurface == NULL ) { | |
| 496 return; | |
| 497 } | |
| 498 | |
| 499 /* 8-bit shadow surfaces report that they have exclusive palette */ | |
| 500 if ( SDL_ShadowSurface->format->palette ) { | |
| 501 SDL_ShadowSurface->flags |= SDL_HWPALETTE; | |
| 502 if ( depth == (SDL_VideoSurface->format)->BitsPerPixel ) { | |
| 503 memcpy(SDL_ShadowSurface->format->palette->colors, | |
| 504 SDL_VideoSurface->format->palette->colors, | |
| 505 SDL_VideoSurface->format->palette->ncolors* | |
| 506 sizeof(SDL_Color)); | |
| 507 } else { | |
| 508 SDL_DitherColors( | |
| 509 SDL_ShadowSurface->format->palette->colors, depth); | |
| 510 } | |
| 511 } | |
| 512 | |
| 513 /* If the video surface is resizable, the shadow should say so */ | |
| 514 if ( (SDL_VideoSurface->flags & SDL_RESIZABLE) == SDL_RESIZABLE ) { | |
| 515 SDL_ShadowSurface->flags |= SDL_RESIZABLE; | |
| 516 } | |
| 517 /* If the video surface has no frame, the shadow should say so */ | |
| 518 if ( (SDL_VideoSurface->flags & SDL_NOFRAME) == SDL_NOFRAME ) { | |
| 519 SDL_ShadowSurface->flags |= SDL_NOFRAME; | |
| 520 } | |
| 521 /* If the video surface is fullscreen, the shadow should say so */ | |
| 522 if ( (SDL_VideoSurface->flags & SDL_FULLSCREEN) == SDL_FULLSCREEN ) { | |
| 523 SDL_ShadowSurface->flags |= SDL_FULLSCREEN; | |
| 524 } | |
| 525 /* If the video surface is flippable, the shadow should say so */ | |
| 526 if ( (SDL_VideoSurface->flags & SDL_DOUBLEBUF) == SDL_DOUBLEBUF ) { | |
| 527 SDL_ShadowSurface->flags |= SDL_DOUBLEBUF; | |
| 528 } | |
| 529 return; | |
| 530 } | |
| 531 | |
| 532 /* | |
| 533 * Set the requested video mode, allocating a shadow buffer if necessary. | |
| 534 */ | |
| 535 SDL_Surface * SDL_SetVideoMode (int width, int height, int bpp, Uint32 flags) | |
| 536 { | |
| 537 SDL_VideoDevice *video, *this; | |
| 538 SDL_Surface *prev_mode, *mode; | |
| 539 int video_w; | |
| 540 int video_h; | |
| 541 int video_bpp; | |
| 542 int is_opengl; | |
| 543 SDL_GrabMode saved_grab; | |
| 544 | |
| 545 /* Start up the video driver, if necessary.. | |
| 546 WARNING: This is the only function protected this way! | |
| 547 */ | |
| 548 if ( ! current_video ) { | |
| 549 if ( SDL_Init(SDL_INIT_VIDEO|SDL_INIT_NOPARACHUTE) < 0 ) { | |
| 550 return(NULL); | |
| 551 } | |
| 552 } | |
| 553 this = video = current_video; | |
| 554 | |
| 555 /* Default to the current video bpp */ | |
| 556 if ( bpp == 0 ) { | |
| 557 flags |= SDL_ANYFORMAT; | |
| 558 bpp = SDL_VideoSurface->format->BitsPerPixel; | |
| 559 } | |
| 560 | |
| 561 /* Get a good video mode, the closest one possible */ | |
| 562 video_w = width; | |
| 563 video_h = height; | |
| 564 video_bpp = bpp; | |
| 565 if ( ! SDL_GetVideoMode(&video_w, &video_h, &video_bpp, flags) ) { | |
| 566 return(NULL); | |
| 567 } | |
| 568 | |
| 569 /* Check the requested flags */ | |
| 570 /* There's no palette in > 8 bits-per-pixel mode */ | |
| 571 if ( video_bpp > 8 ) { | |
| 572 flags &= ~SDL_HWPALETTE; | |
| 573 } | |
| 574 #if 0 | |
| 575 if ( (flags&SDL_FULLSCREEN) != SDL_FULLSCREEN ) { | |
| 576 /* There's no windowed double-buffering */ | |
| 577 flags &= ~SDL_DOUBLEBUF; | |
| 578 } | |
| 579 #endif | |
| 580 if ( (flags&SDL_DOUBLEBUF) == SDL_DOUBLEBUF ) { | |
| 581 /* Use hardware surfaces when double-buffering */ | |
| 582 flags |= SDL_HWSURFACE; | |
| 583 } | |
| 584 | |
| 585 is_opengl = ( ( flags & SDL_OPENGL ) == SDL_OPENGL ); | |
| 586 if ( is_opengl ) { | |
| 587 /* These flags are for 2D video modes only */ | |
| 588 flags &= ~(SDL_HWSURFACE|SDL_DOUBLEBUF); | |
| 589 } | |
| 590 | |
|
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591 /* Reset the keyboard here so event callbacks can run */ |
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592 SDL_ResetKeyboard(); |
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593 |
| 0 | 594 /* Clean up any previous video mode */ |
| 595 if ( SDL_PublicSurface != NULL ) { | |
| 596 SDL_PublicSurface = NULL; | |
| 597 } | |
| 598 if ( SDL_ShadowSurface != NULL ) { | |
| 599 SDL_Surface *ready_to_go; | |
| 600 ready_to_go = SDL_ShadowSurface; | |
| 601 SDL_ShadowSurface = NULL; | |
| 602 SDL_FreeSurface(ready_to_go); | |
| 603 } | |
| 604 if ( video->physpal ) { | |
| 605 free(video->physpal->colors); | |
| 606 free(video->physpal); | |
| 607 video->physpal = NULL; | |
| 608 } | |
| 609 if( video->gammacols) { | |
| 610 free(video->gammacols); | |
| 611 video->gammacols = NULL; | |
| 612 } | |
| 613 | |
| 614 /* Save the previous grab state and turn off grab for mode switch */ | |
| 615 saved_grab = SDL_WM_GrabInputOff(); | |
| 616 | |
| 617 /* Try to set the video mode, along with offset and clipping */ | |
| 618 prev_mode = SDL_VideoSurface; | |
| 619 SDL_LockCursor(); | |
| 620 SDL_VideoSurface = NULL; /* In case it's freed by driver */ | |
| 621 mode = video->SetVideoMode(this, prev_mode,video_w,video_h,video_bpp,flags); | |
| 622 if ( mode ) { /* Prevent resize events from mode change */ | |
| 623 SDL_PrivateResize(mode->w, mode->h); | |
|
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624 |
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625 /* Sam - If we asked for OpenGL mode, and didn't get it, fail */ |
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626 if ( is_opengl && !(mode->flags & SDL_OPENGL) ) { |
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627 mode = NULL; |
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628 } |
| 0 | 629 } |
| 630 /* | |
| 631 * rcg11292000 | |
| 632 * If you try to set an SDL_OPENGL surface, and fail to find a | |
| 633 * matching visual, then the next call to SDL_SetVideoMode() | |
| 634 * will segfault, since we no longer point to a dummy surface, | |
| 635 * but rather NULL. | |
| 636 * Sam 11/29/00 | |
| 637 * WARNING, we need to make sure that the previous mode hasn't | |
| 638 * already been freed by the video driver. What do we do in | |
| 639 * that case? Should we call SDL_VideoInit() again? | |
| 640 */ | |
| 641 SDL_VideoSurface = (mode != NULL) ? mode : prev_mode; | |
| 642 | |
| 643 if ( (mode != NULL) && (!is_opengl) ) { | |
| 644 /* Sanity check */ | |
| 645 if ( (mode->w < width) || (mode->h < height) ) { | |
| 646 SDL_SetError("Video mode smaller than requested"); | |
| 647 return(NULL); | |
| 648 } | |
| 649 | |
| 650 /* If we have a palettized surface, create a default palette */ | |
| 651 if ( mode->format->palette ) { | |
| 652 SDL_PixelFormat *vf = mode->format; | |
| 653 SDL_DitherColors(vf->palette->colors, vf->BitsPerPixel); | |
| 654 video->SetColors(this, 0, vf->palette->ncolors, | |
| 655 vf->palette->colors); | |
| 656 } | |
| 657 | |
| 658 /* Clear the surface to black */ | |
| 659 video->offset_x = 0; | |
| 660 video->offset_y = 0; | |
| 661 mode->offset = 0; | |
| 662 SDL_SetClipRect(mode, NULL); | |
| 663 SDL_ClearSurface(mode); | |
| 664 | |
| 665 /* Now adjust the offsets to match the desired mode */ | |
| 666 video->offset_x = (mode->w-width)/2; | |
| 667 video->offset_y = (mode->h-height)/2; | |
| 668 mode->offset = video->offset_y*mode->pitch + | |
| 669 video->offset_x*mode->format->BytesPerPixel; | |
| 670 #ifdef DEBUG_VIDEO | |
| 671 fprintf(stderr, | |
| 672 "Requested mode: %dx%dx%d, obtained mode %dx%dx%d (offset %d)\n", | |
| 673 width, height, bpp, | |
| 674 mode->w, mode->h, mode->format->BitsPerPixel, mode->offset); | |
| 675 #endif | |
| 676 mode->w = width; | |
| 677 mode->h = height; | |
| 678 SDL_SetClipRect(mode, NULL); | |
| 679 } | |
| 680 SDL_ResetCursor(); | |
| 681 SDL_UnlockCursor(); | |
| 682 | |
| 683 /* If we failed setting a video mode, return NULL... (Uh Oh!) */ | |
| 684 if ( mode == NULL ) { | |
| 685 return(NULL); | |
| 686 } | |
| 687 | |
| 688 /* If there is no window manager, set the SDL_NOFRAME flag */ | |
| 689 if ( ! video->info.wm_available ) { | |
| 690 mode->flags |= SDL_NOFRAME; | |
| 691 } | |
| 692 | |
| 693 /* Reset the mouse cursor and grab for new video mode */ | |
| 694 SDL_SetCursor(NULL); | |
| 695 if ( video->UpdateMouse ) { | |
| 696 video->UpdateMouse(this); | |
| 697 } | |
| 698 SDL_WM_GrabInput(saved_grab); | |
| 699 SDL_GetRelativeMouseState(NULL, NULL); /* Clear first large delta */ | |
| 700 | |
| 701 /* If we're running OpenGL, make the context current */ | |
| 702 if ( (video->screen->flags & SDL_OPENGL) && | |
| 703 video->GL_MakeCurrent ) { | |
| 704 if ( video->GL_MakeCurrent(this) < 0 ) { | |
| 705 return(NULL); | |
| 706 } | |
| 707 } | |
| 708 | |
| 709 /* Set up a fake SDL surface for OpenGL "blitting" */ | |
| 710 if ( (flags & SDL_OPENGLBLIT) == SDL_OPENGLBLIT ) { | |
| 711 /* Load GL functions for performing the texture updates */ | |
| 712 #ifdef HAVE_OPENGL | |
| 713 #define SDL_PROC(ret,func,params) \ | |
| 714 do { \ | |
| 715 video->func = SDL_GL_GetProcAddress(#func); \ | |
| 716 if ( ! video->func ) { \ | |
| 717 SDL_SetError("Couldn't load GL function: %s\n", #func); \ | |
| 718 return(NULL); \ | |
| 719 } \ | |
| 720 } while ( 0 ); | |
| 721 #include "SDL_glfuncs.h" | |
| 722 #undef SDL_PROC | |
| 723 | |
| 724 /* Create a software surface for blitting */ | |
| 725 #ifdef GL_VERSION_1_2 | |
| 726 /* If the implementation either supports the packed pixels | |
| 727 extension, or implements the core OpenGL 1.2 API, it will | |
| 728 support the GL_UNSIGNED_SHORT_5_6_5 texture format. | |
| 729 */ | |
| 730 if ( (bpp == 16) && | |
|
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731 (strstr((const char *)video->glGetString(GL_EXTENSIONS), "GL_EXT_packed_pixels") || |
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732 (atof((const char *)video->glGetString(GL_VERSION)) >= 1.2f)) |
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733 ) { |
| 0 | 734 video->is_32bit = 0; |
| 735 SDL_VideoSurface = SDL_CreateRGBSurface( | |
| 736 flags, | |
| 737 width, | |
| 738 height, | |
| 739 16, | |
| 740 31 << 11, | |
| 741 63 << 5, | |
| 742 31, | |
| 743 0 | |
| 744 ); | |
| 745 } | |
| 746 else | |
| 747 #endif /* OpenGL 1.2 */ | |
| 748 { | |
| 749 video->is_32bit = 1; | |
| 750 SDL_VideoSurface = SDL_CreateRGBSurface( | |
| 751 flags, | |
| 752 width, | |
| 753 height, | |
| 754 32, | |
| 755 #if SDL_BYTEORDER == SDL_LIL_ENDIAN | |
| 756 0x000000FF, | |
| 757 0x0000FF00, | |
| 758 0x00FF0000, | |
| 759 0xFF000000 | |
| 760 #else | |
| 761 0xFF000000, | |
| 762 0x00FF0000, | |
| 763 0x0000FF00, | |
| 764 0x000000FF | |
| 765 #endif | |
| 766 ); | |
| 767 } | |
| 768 if ( ! SDL_VideoSurface ) { | |
| 769 return(NULL); | |
| 770 } | |
| 771 SDL_VideoSurface->flags = mode->flags | SDL_OPENGLBLIT; | |
| 772 | |
| 773 /* Free the original video mode surface (is this safe?) */ | |
| 774 SDL_FreeSurface(mode); | |
| 775 | |
| 776 /* Set the surface completely opaque & white by default */ | |
| 777 memset( SDL_VideoSurface->pixels, 255, SDL_VideoSurface->h * SDL_VideoSurface->pitch ); | |
| 778 video->glGenTextures( 1, &video->texture ); | |
| 779 video->glBindTexture( GL_TEXTURE_2D, video->texture ); | |
| 780 video->glTexImage2D( | |
| 781 GL_TEXTURE_2D, | |
| 782 0, | |
| 783 video->is_32bit ? GL_RGBA : GL_RGB, | |
| 784 256, | |
| 785 256, | |
| 786 0, | |
| 787 video->is_32bit ? GL_RGBA : GL_RGB, | |
| 788 #ifdef GL_VERSION_1_2 | |
| 789 video->is_32bit ? GL_UNSIGNED_BYTE : GL_UNSIGNED_SHORT_5_6_5, | |
| 790 #else | |
| 791 GL_UNSIGNED_BYTE, | |
| 792 #endif | |
| 793 NULL); | |
| 794 | |
| 795 video->UpdateRects = SDL_GL_UpdateRectsLock; | |
| 796 #else | |
| 797 SDL_SetError("Somebody forgot to #define HAVE_OPENGL"); | |
| 798 return(NULL); | |
| 799 #endif | |
| 800 } | |
| 801 | |
| 802 /* Create a shadow surface if necessary */ | |
| 803 /* There are three conditions under which we create a shadow surface: | |
| 804 1. We need a particular bits-per-pixel that we didn't get. | |
| 805 2. We need a hardware palette and didn't get one. | |
| 806 3. We need a software surface and got a hardware surface. | |
| 807 */ | |
| 808 if ( !(SDL_VideoSurface->flags & SDL_OPENGL) && | |
| 809 ( | |
| 810 ( !(flags&SDL_ANYFORMAT) && | |
| 811 (SDL_VideoSurface->format->BitsPerPixel != bpp)) || | |
| 812 ( (flags&SDL_HWPALETTE) && | |
| 813 !(SDL_VideoSurface->flags&SDL_HWPALETTE)) || | |
| 814 /* If the surface is in hardware, video writes are visible | |
| 815 as soon as they are performed, so we need to buffer them | |
| 816 */ | |
| 817 ( ((flags&SDL_HWSURFACE) == SDL_SWSURFACE) && | |
| 818 (SDL_VideoSurface->flags&SDL_HWSURFACE)) | |
| 819 ) ) { | |
| 820 SDL_CreateShadowSurface(bpp); | |
| 821 if ( SDL_ShadowSurface == NULL ) { | |
| 822 SDL_SetError("Couldn't create shadow surface"); | |
| 823 return(NULL); | |
| 824 } | |
| 825 SDL_PublicSurface = SDL_ShadowSurface; | |
| 826 } else { | |
| 827 SDL_PublicSurface = SDL_VideoSurface; | |
| 828 } | |
| 829 video->info.vfmt = SDL_VideoSurface->format; | |
| 830 | |
| 831 /* We're done! */ | |
| 832 return(SDL_PublicSurface); | |
| 833 } | |
| 834 | |
| 835 /* | |
| 836 * Convert a surface into the video pixel format. | |
| 837 */ | |
| 838 SDL_Surface * SDL_DisplayFormat (SDL_Surface *surface) | |
| 839 { | |
| 840 Uint32 flags; | |
| 841 | |
| 842 if ( ! SDL_PublicSurface ) { | |
| 843 SDL_SetError("No video mode has been set"); | |
| 844 return(NULL); | |
| 845 } | |
| 846 /* Set the flags appropriate for copying to display surface */ | |
| 847 flags = (SDL_PublicSurface->flags&SDL_HWSURFACE); | |
| 848 #ifdef AUTORLE_DISPLAYFORMAT | |
| 849 flags |= (surface->flags & (SDL_SRCCOLORKEY|SDL_SRCALPHA)); | |
| 850 flags |= SDL_RLEACCELOK; | |
| 851 #else | |
| 852 flags |= surface->flags & (SDL_SRCCOLORKEY|SDL_SRCALPHA|SDL_RLEACCELOK); | |
| 853 #endif | |
| 854 return(SDL_ConvertSurface(surface, SDL_PublicSurface->format, flags)); | |
| 855 } | |
| 856 | |
| 857 /* | |
| 858 * Convert a surface into a format that's suitable for blitting to | |
| 859 * the screen, but including an alpha channel. | |
| 860 */ | |
| 861 SDL_Surface *SDL_DisplayFormatAlpha(SDL_Surface *surface) | |
| 862 { | |
| 863 SDL_PixelFormat *vf; | |
| 864 SDL_PixelFormat *format; | |
| 865 SDL_Surface *converted; | |
| 866 Uint32 flags; | |
| 867 /* default to ARGB8888 */ | |
| 868 Uint32 amask = 0xff000000; | |
| 869 Uint32 rmask = 0x00ff0000; | |
| 870 Uint32 gmask = 0x0000ff00; | |
| 871 Uint32 bmask = 0x000000ff; | |
| 872 | |
| 873 if ( ! SDL_PublicSurface ) { | |
| 874 SDL_SetError("No video mode has been set"); | |
| 875 return(NULL); | |
| 876 } | |
| 877 vf = SDL_PublicSurface->format; | |
| 878 | |
| 879 switch(vf->BytesPerPixel) { | |
| 880 case 2: | |
| 881 /* For XGY5[56]5, use, AXGY8888, where {X, Y} = {R, B}. | |
| 882 For anything else (like ARGB4444) it doesn't matter | |
| 883 since we have no special code for it anyway */ | |
| 884 if ( (vf->Rmask == 0x1f) && | |
| 885 (vf->Bmask == 0xf800 || vf->Bmask == 0x7c00)) { | |
| 886 rmask = 0xff; | |
| 887 bmask = 0xff0000; | |
| 888 } | |
| 889 break; | |
| 890 | |
| 891 case 3: | |
| 892 case 4: | |
| 893 /* Keep the video format, as long as the high 8 bits are | |
| 894 unused or alpha */ | |
| 895 if ( (vf->Rmask == 0xff) && (vf->Bmask == 0xff0000) ) { | |
| 896 rmask = 0xff; | |
| 897 bmask = 0xff0000; | |
| 898 } | |
| 899 break; | |
| 900 | |
| 901 default: | |
| 902 /* We have no other optimised formats right now. When/if a new | |
| 903 optimised alpha format is written, add the converter here */ | |
| 904 break; | |
| 905 } | |
| 906 format = SDL_AllocFormat(32, rmask, gmask, bmask, amask); | |
| 907 flags = SDL_PublicSurface->flags & SDL_HWSURFACE; | |
| 908 flags |= surface->flags & (SDL_SRCALPHA | SDL_RLEACCELOK); | |
| 909 converted = SDL_ConvertSurface(surface, format, flags); | |
| 910 SDL_FreeFormat(format); | |
| 911 return(converted); | |
| 912 } | |
| 913 | |
| 914 /* | |
| 915 * Update a specific portion of the physical screen | |
| 916 */ | |
| 917 void SDL_UpdateRect(SDL_Surface *screen, Sint32 x, Sint32 y, Uint32 w, Uint32 h) | |
| 918 { | |
| 919 if ( screen ) { | |
| 920 SDL_Rect rect; | |
| 921 | |
| 922 /* Perform some checking */ | |
| 923 if ( w == 0 ) | |
| 924 w = screen->w; | |
| 925 if ( h == 0 ) | |
| 926 h = screen->h; | |
| 927 if ( (int)(x+w) > screen->w ) | |
| 928 return; | |
| 929 if ( (int)(y+h) > screen->h ) | |
| 930 return; | |
| 931 | |
| 932 /* Fill the rectangle */ | |
| 933 rect.x = x; | |
| 934 rect.y = y; | |
| 935 rect.w = w; | |
| 936 rect.h = h; | |
| 937 SDL_UpdateRects(screen, 1, &rect); | |
| 938 } | |
| 939 } | |
| 940 void SDL_UpdateRects (SDL_Surface *screen, int numrects, SDL_Rect *rects) | |
| 941 { | |
| 942 int i; | |
| 943 SDL_VideoDevice *video = current_video; | |
| 944 SDL_VideoDevice *this = current_video; | |
| 945 | |
| 946 if ( screen == SDL_ShadowSurface ) { | |
| 947 /* Blit the shadow surface using saved mapping */ | |
| 948 SDL_Palette *pal = screen->format->palette; | |
| 949 SDL_Color *saved_colors = NULL; | |
| 950 if ( pal && !(SDL_VideoSurface->flags & SDL_HWPALETTE) ) { | |
| 951 /* simulated 8bpp, use correct physical palette */ | |
| 952 saved_colors = pal->colors; | |
| 953 if ( video->gammacols ) { | |
| 954 /* gamma-corrected palette */ | |
| 955 pal->colors = video->gammacols; | |
| 956 } else if ( video->physpal ) { | |
| 957 /* physical palette different from logical */ | |
| 958 pal->colors = video->physpal->colors; | |
| 959 } | |
| 960 } | |
| 961 if ( SHOULD_DRAWCURSOR(SDL_cursorstate) ) { | |
| 962 SDL_LockCursor(); | |
| 963 SDL_DrawCursor(SDL_ShadowSurface); | |
| 964 for ( i=0; i<numrects; ++i ) { | |
| 965 SDL_LowerBlit(SDL_ShadowSurface, &rects[i], | |
| 966 SDL_VideoSurface, &rects[i]); | |
| 967 } | |
| 968 SDL_EraseCursor(SDL_ShadowSurface); | |
| 969 SDL_UnlockCursor(); | |
| 970 } else { | |
| 971 for ( i=0; i<numrects; ++i ) { | |
| 972 SDL_LowerBlit(SDL_ShadowSurface, &rects[i], | |
| 973 SDL_VideoSurface, &rects[i]); | |
| 974 } | |
| 975 } | |
| 976 if ( saved_colors ) | |
| 977 pal->colors = saved_colors; | |
| 978 | |
| 979 /* Fall through to video surface update */ | |
| 980 screen = SDL_VideoSurface; | |
| 981 } | |
| 982 if ( screen == SDL_VideoSurface ) { | |
| 983 /* Update the video surface */ | |
| 984 if ( screen->offset ) { | |
| 985 for ( i=0; i<numrects; ++i ) { | |
| 986 rects[i].x += video->offset_x; | |
| 987 rects[i].y += video->offset_y; | |
| 988 } | |
| 989 video->UpdateRects(this, numrects, rects); | |
| 990 for ( i=0; i<numrects; ++i ) { | |
| 991 rects[i].x -= video->offset_x; | |
| 992 rects[i].y -= video->offset_y; | |
| 993 } | |
| 994 } else { | |
| 995 video->UpdateRects(this, numrects, rects); | |
| 996 } | |
| 997 } | |
| 998 } | |
| 999 | |
| 1000 /* | |
| 1001 * Performs hardware double buffering, if possible, or a full update if not. | |
| 1002 */ | |
| 1003 int SDL_Flip(SDL_Surface *screen) | |
| 1004 { | |
| 1005 SDL_VideoDevice *video = current_video; | |
| 1006 /* Copy the shadow surface to the video surface */ | |
| 1007 if ( screen == SDL_ShadowSurface ) { | |
| 1008 SDL_Rect rect; | |
| 1009 SDL_Palette *pal = screen->format->palette; | |
| 1010 SDL_Color *saved_colors = NULL; | |
| 1011 if ( pal && !(SDL_VideoSurface->flags & SDL_HWPALETTE) ) { | |
| 1012 /* simulated 8bpp, use correct physical palette */ | |
| 1013 saved_colors = pal->colors; | |
| 1014 if ( video->gammacols ) { | |
| 1015 /* gamma-corrected palette */ | |
| 1016 pal->colors = video->gammacols; | |
| 1017 } else if ( video->physpal ) { | |
| 1018 /* physical palette different from logical */ | |
| 1019 pal->colors = video->physpal->colors; | |
| 1020 } | |
| 1021 } | |
| 1022 | |
| 1023 rect.x = 0; | |
| 1024 rect.y = 0; | |
| 1025 rect.w = screen->w; | |
| 1026 rect.h = screen->h; | |
| 1027 SDL_LowerBlit(SDL_ShadowSurface,&rect, SDL_VideoSurface,&rect); | |
| 1028 | |
| 1029 if ( saved_colors ) | |
| 1030 pal->colors = saved_colors; | |
| 1031 screen = SDL_VideoSurface; | |
| 1032 } | |
| 1033 if ( (screen->flags & SDL_DOUBLEBUF) == SDL_DOUBLEBUF ) { | |
| 1034 SDL_VideoDevice *this = current_video; | |
| 1035 return(video->FlipHWSurface(this, SDL_VideoSurface)); | |
| 1036 } else { | |
| 1037 SDL_UpdateRect(screen, 0, 0, 0, 0); | |
| 1038 } | |
| 1039 return(0); | |
| 1040 } | |
| 1041 | |
| 1042 static void SetPalette_logical(SDL_Surface *screen, SDL_Color *colors, | |
| 1043 int firstcolor, int ncolors) | |
| 1044 { | |
| 1045 SDL_Palette *pal = screen->format->palette; | |
| 1046 SDL_Palette *vidpal; | |
| 1047 | |
| 1048 if ( colors != (pal->colors + firstcolor) ) { | |
| 1049 memcpy(pal->colors + firstcolor, colors, | |
| 1050 ncolors * sizeof(*colors)); | |
| 1051 } | |
| 1052 | |
| 1053 vidpal = SDL_VideoSurface->format->palette; | |
| 1054 if ( (screen == SDL_ShadowSurface) && vidpal ) { | |
| 1055 /* | |
| 1056 * This is a shadow surface, and the physical | |
| 1057 * framebuffer is also indexed. Propagate the | |
| 1058 * changes to its logical palette so that | |
| 1059 * updates are always identity blits | |
| 1060 */ | |
| 1061 memcpy(vidpal->colors + firstcolor, colors, | |
| 1062 ncolors * sizeof(*colors)); | |
| 1063 } | |
| 1064 SDL_FormatChanged(screen); | |
| 1065 } | |
| 1066 | |
| 1067 static int SetPalette_physical(SDL_Surface *screen, | |
| 1068 SDL_Color *colors, int firstcolor, int ncolors) | |
| 1069 { | |
| 1070 SDL_VideoDevice *video = current_video; | |
| 1071 int gotall = 1; | |
| 1072 | |
| 1073 if ( video->physpal ) { | |
| 1074 /* We need to copy the new colors, since we haven't | |
| 1075 * already done the copy in the logical set above. | |
| 1076 */ | |
| 1077 memcpy(video->physpal->colors + firstcolor, | |
| 1078 colors, ncolors * sizeof(*colors)); | |
| 1079 } | |
| 1080 if ( screen == SDL_ShadowSurface ) { | |
| 1081 if ( SDL_VideoSurface->flags & SDL_HWPALETTE ) { | |
| 1082 /* | |
| 1083 * The real screen is also indexed - set its physical | |
| 1084 * palette. The physical palette does not include the | |
| 1085 * gamma modification, we apply it directly instead, | |
| 1086 * but this only happens if we have hardware palette. | |
| 1087 */ | |
| 1088 screen = SDL_VideoSurface; | |
| 1089 } else { | |
| 1090 /* | |
| 1091 * The video surface is not indexed - invalidate any | |
| 1092 * active shadow-to-video blit mappings. | |
| 1093 */ | |
| 1094 if ( screen->map->dst == SDL_VideoSurface ) { | |
| 1095 SDL_InvalidateMap(screen->map); | |
| 1096 } | |
| 1097 if ( video->gamma ) { | |
| 1098 if( ! video->gammacols ) { | |
| 1099 SDL_Palette *pp = video->physpal; | |
| 1100 if(!pp) | |
| 1101 pp = screen->format->palette; | |
| 1102 video->gammacols = malloc(pp->ncolors | |
| 1103 * sizeof(SDL_Color)); | |
| 1104 SDL_ApplyGamma(video->gamma, | |
| 1105 pp->colors, | |
| 1106 video->gammacols, | |
| 1107 pp->ncolors); | |
| 1108 } else { | |
| 1109 SDL_ApplyGamma(video->gamma, colors, | |
| 1110 video->gammacols | |
| 1111 + firstcolor, | |
| 1112 ncolors); | |
| 1113 } | |
| 1114 } | |
| 1115 SDL_UpdateRect(screen, 0, 0, 0, 0); | |
| 1116 } | |
| 1117 } | |
| 1118 | |
| 1119 if ( screen == SDL_VideoSurface ) { | |
| 1120 SDL_Color gcolors[256]; | |
| 1121 | |
| 1122 if ( video->gamma ) { | |
| 1123 SDL_ApplyGamma(video->gamma, colors, gcolors, ncolors); | |
| 1124 colors = gcolors; | |
| 1125 } | |
| 1126 gotall = video->SetColors(video, firstcolor, ncolors, colors); | |
| 1127 if ( ! gotall ) { | |
| 1128 /* The video flags shouldn't have SDL_HWPALETTE, and | |
| 1129 the video driver is responsible for copying back the | |
| 1130 correct colors into the video surface palette. | |
| 1131 */ | |
| 1132 ; | |
| 1133 } | |
| 1134 SDL_CursorPaletteChanged(); | |
| 1135 } | |
| 1136 return gotall; | |
| 1137 } | |
| 1138 | |
| 1139 /* | |
| 1140 * Set the physical and/or logical colormap of a surface: | |
| 1141 * Only the screen has a physical colormap. It determines what is actually | |
| 1142 * sent to the display. | |
| 1143 * The logical colormap is used to map blits to/from the surface. | |
| 1144 * 'which' is one or both of SDL_LOGPAL, SDL_PHYSPAL | |
| 1145 * | |
| 1146 * Return nonzero if all colours were set as requested, or 0 otherwise. | |
| 1147 */ | |
| 1148 int SDL_SetPalette(SDL_Surface *screen, int which, | |
| 1149 SDL_Color *colors, int firstcolor, int ncolors) | |
| 1150 { | |
| 1151 SDL_Palette *pal; | |
| 1152 int gotall; | |
| 1153 int palsize; | |
| 1154 | |
| 34 | 1155 if ( ! current_video ) { |
| 1156 return 0; | |
| 1157 } | |
| 0 | 1158 if ( screen != SDL_PublicSurface ) { |
| 1159 /* only screens have physical palettes */ | |
| 1160 which &= ~SDL_PHYSPAL; | |
| 1161 } else if( (screen->flags & SDL_HWPALETTE) != SDL_HWPALETTE ) { | |
| 1162 /* hardware palettes required for split colormaps */ | |
| 1163 which |= SDL_PHYSPAL | SDL_LOGPAL; | |
| 1164 } | |
| 1165 | |
| 1166 /* Verify the parameters */ | |
| 1167 pal = screen->format->palette; | |
| 1168 if( !pal ) { | |
| 1169 return 0; /* not a palettized surface */ | |
| 1170 } | |
| 1171 gotall = 1; | |
| 1172 palsize = 1 << screen->format->BitsPerPixel; | |
| 1173 if ( ncolors > (palsize - firstcolor) ) { | |
| 1174 ncolors = (palsize - firstcolor); | |
| 1175 gotall = 0; | |
| 1176 } | |
| 1177 | |
| 1178 if ( which & SDL_LOGPAL ) { | |
| 1179 /* | |
| 1180 * Logical palette change: The actual screen isn't affected, | |
| 1181 * but the internal colormap is altered so that the | |
| 1182 * interpretation of the pixel values (for blits etc) is | |
| 1183 * changed. | |
| 1184 */ | |
| 1185 SetPalette_logical(screen, colors, firstcolor, ncolors); | |
| 1186 } | |
| 1187 if ( which & SDL_PHYSPAL ) { | |
| 1188 SDL_VideoDevice *video = current_video; | |
| 1189 /* | |
| 1190 * Physical palette change: This doesn't affect the | |
| 1191 * program's idea of what the screen looks like, but changes | |
| 1192 * its actual appearance. | |
| 1193 */ | |
| 1194 if(!video) | |
| 1195 return gotall; /* video not yet initialized */ | |
| 1196 if(!video->physpal && !(which & SDL_LOGPAL) ) { | |
| 1197 /* Lazy physical palette allocation */ | |
| 1198 int size; | |
| 1199 SDL_Palette *pp = malloc(sizeof(*pp)); | |
| 1200 current_video->physpal = pp; | |
| 1201 pp->ncolors = pal->ncolors; | |
| 1202 size = pp->ncolors * sizeof(SDL_Color); | |
| 1203 pp->colors = malloc(size); | |
| 1204 memcpy(pp->colors, pal->colors, size); | |
| 1205 } | |
| 1206 if ( ! SetPalette_physical(screen, | |
| 1207 colors, firstcolor, ncolors) ) { | |
| 1208 gotall = 0; | |
| 1209 } | |
| 1210 } | |
| 1211 return gotall; | |
| 1212 } | |
| 1213 | |
| 1214 int SDL_SetColors(SDL_Surface *screen, SDL_Color *colors, int firstcolor, | |
| 1215 int ncolors) | |
| 1216 { | |
| 1217 return SDL_SetPalette(screen, SDL_LOGPAL | SDL_PHYSPAL, | |
| 1218 colors, firstcolor, ncolors); | |
| 1219 } | |
| 1220 | |
| 1221 /* | |
| 1222 * Clean up the video subsystem | |
| 1223 */ | |
| 1224 void SDL_VideoQuit (void) | |
| 1225 { | |
| 1226 SDL_Surface *ready_to_go; | |
| 1227 | |
| 1228 if ( current_video ) { | |
| 1229 SDL_VideoDevice *video = current_video; | |
| 1230 SDL_VideoDevice *this = current_video; | |
| 1231 | |
| 1232 /* Halt event processing before doing anything else */ | |
| 1233 SDL_StopEventLoop(); | |
| 1234 | |
| 1235 /* Clean up allocated window manager items */ | |
| 1236 if ( SDL_PublicSurface ) { | |
| 1237 SDL_PublicSurface = NULL; | |
| 1238 } | |
| 1239 SDL_CursorQuit(); | |
| 1240 | |
| 1241 /* Just in case... */ | |
| 1242 SDL_WM_GrabInputOff(); | |
| 1243 | |
| 1244 /* Clean up the system video */ | |
| 1245 video->VideoQuit(this); | |
| 1246 | |
| 1247 /* Free any lingering surfaces */ | |
| 1248 ready_to_go = SDL_ShadowSurface; | |
| 1249 SDL_ShadowSurface = NULL; | |
| 1250 SDL_FreeSurface(ready_to_go); | |
| 1251 if ( SDL_VideoSurface != NULL ) { | |
| 1252 ready_to_go = SDL_VideoSurface; | |
| 1253 SDL_VideoSurface = NULL; | |
| 1254 SDL_FreeSurface(ready_to_go); | |
| 1255 } | |
| 1256 SDL_PublicSurface = NULL; | |
| 1257 | |
| 1258 /* Clean up miscellaneous memory */ | |
| 1259 if ( video->physpal ) { | |
| 1260 free(video->physpal->colors); | |
| 1261 free(video->physpal); | |
| 1262 video->physpal = NULL; | |
| 1263 } | |
| 1264 if ( video->gammacols ) { | |
| 1265 free(video->gammacols); | |
| 1266 video->gammacols = NULL; | |
| 1267 } | |
| 1268 if ( video->gamma ) { | |
| 1269 free(video->gamma); | |
| 1270 video->gamma = NULL; | |
| 1271 } | |
|
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1272 if ( video->wm_title != NULL ) { |
|
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|
1273 free(video->wm_title); |
|
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1274 video->wm_title = NULL; |
| 0 | 1275 } |
|
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1276 if ( video->wm_icon != NULL ) { |
|
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|
1277 free(video->wm_icon); |
|
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1278 video->wm_icon = NULL; |
| 0 | 1279 } |
| 1280 | |
| 1281 /* Finish cleaning up video subsystem */ | |
| 1282 video->free(this); | |
| 1283 current_video = NULL; | |
| 1284 } | |
| 1285 return; | |
| 1286 } | |
| 1287 | |
| 1288 /* Load the GL driver library */ | |
| 1289 int SDL_GL_LoadLibrary(const char *path) | |
| 1290 { | |
| 1291 SDL_VideoDevice *video = current_video; | |
| 1292 SDL_VideoDevice *this = current_video; | |
| 1293 int retval; | |
| 1294 | |
| 1295 retval = -1; | |
|
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1296 if ( video && video->GL_LoadLibrary ) { |
| 0 | 1297 retval = video->GL_LoadLibrary(this, path); |
| 1298 } else { | |
| 1299 SDL_SetError("No dynamic GL support in video driver"); | |
| 1300 } | |
| 1301 return(retval); | |
| 1302 } | |
| 1303 | |
| 1304 void *SDL_GL_GetProcAddress(const char* proc) | |
| 1305 { | |
| 1306 SDL_VideoDevice *video = current_video; | |
| 1307 SDL_VideoDevice *this = current_video; | |
| 1308 void *func; | |
| 1309 | |
| 1310 func = NULL; | |
| 1311 if ( video->GL_GetProcAddress ) { | |
| 1312 if ( video->gl_config.driver_loaded ) { | |
| 1313 func = video->GL_GetProcAddress(this, proc); | |
| 1314 } else { | |
| 1315 SDL_SetError("No GL driver has been loaded"); | |
| 1316 } | |
| 1317 } else { | |
| 1318 SDL_SetError("No dynamic GL support in video driver"); | |
| 1319 } | |
| 1320 return func; | |
| 1321 } | |
| 1322 | |
| 1323 /* Set the specified GL attribute for setting up a GL video mode */ | |
| 1324 int SDL_GL_SetAttribute( SDL_GLattr attr, int value ) | |
| 1325 { | |
| 1326 int retval; | |
| 1327 SDL_VideoDevice *video = current_video; | |
| 1328 | |
| 1329 retval = 0; | |
| 1330 switch (attr) { | |
| 1331 case SDL_GL_RED_SIZE: | |
| 1332 video->gl_config.red_size = value; | |
| 1333 break; | |
| 1334 case SDL_GL_GREEN_SIZE: | |
| 1335 video->gl_config.green_size = value; | |
| 1336 break; | |
| 1337 case SDL_GL_BLUE_SIZE: | |
| 1338 video->gl_config.blue_size = value; | |
| 1339 break; | |
| 1340 case SDL_GL_ALPHA_SIZE: | |
| 1341 video->gl_config.alpha_size = value; | |
| 1342 break; | |
| 1343 case SDL_GL_DOUBLEBUFFER: | |
| 1344 video->gl_config.double_buffer = value; | |
| 1345 break; | |
| 1346 case SDL_GL_BUFFER_SIZE: | |
| 1347 video->gl_config.buffer_size = value; | |
| 1348 break; | |
| 1349 case SDL_GL_DEPTH_SIZE: | |
| 1350 video->gl_config.depth_size = value; | |
| 1351 break; | |
| 1352 case SDL_GL_STENCIL_SIZE: | |
| 1353 video->gl_config.stencil_size = value; | |
| 1354 break; | |
| 1355 case SDL_GL_ACCUM_RED_SIZE: | |
| 1356 video->gl_config.accum_red_size = value; | |
| 1357 break; | |
| 1358 case SDL_GL_ACCUM_GREEN_SIZE: | |
| 1359 video->gl_config.accum_green_size = value; | |
| 1360 break; | |
| 1361 case SDL_GL_ACCUM_BLUE_SIZE: | |
| 1362 video->gl_config.accum_blue_size = value; | |
| 1363 break; | |
| 1364 case SDL_GL_ACCUM_ALPHA_SIZE: | |
| 1365 video->gl_config.accum_alpha_size = value; | |
| 1366 break; | |
| 1367 default: | |
| 1368 SDL_SetError("Unknown OpenGL attribute"); | |
| 1369 retval = -1; | |
| 1370 break; | |
| 1371 } | |
| 1372 return(retval); | |
| 1373 } | |
| 1374 | |
| 1375 /* Retrieve an attribute value from the windowing system. */ | |
| 1376 int SDL_GL_GetAttribute(SDL_GLattr attr, int* value) | |
| 1377 { | |
| 1378 int retval = -1; | |
| 1379 SDL_VideoDevice* video = current_video; | |
| 1380 SDL_VideoDevice* this = current_video; | |
| 1381 | |
| 1382 if ( video->GL_GetAttribute ) { | |
| 1383 retval = this->GL_GetAttribute(this, attr, value); | |
|
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1384 } else { |
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1385 *value = 0; |
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1386 SDL_SetError("GL_GetAttribute not supported"); |
| 0 | 1387 } |
| 1388 return retval; | |
| 1389 } | |
| 1390 | |
| 1391 /* Perform a GL buffer swap on the current GL context */ | |
| 1392 void SDL_GL_SwapBuffers(void) | |
| 1393 { | |
| 1394 SDL_VideoDevice *video = current_video; | |
| 1395 SDL_VideoDevice *this = current_video; | |
| 1396 | |
| 1397 if ( video->screen->flags & SDL_OPENGL ) { | |
|
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1398 video->GL_SwapBuffers(this); |
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1399 } else { |
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1400 SDL_SetError("OpenGL video mode has not been set"); |
| 0 | 1401 } |
| 1402 } | |
| 1403 | |
| 1404 /* Update rects with locking */ | |
| 1405 void SDL_GL_UpdateRectsLock(SDL_VideoDevice* this, int numrects, SDL_Rect *rects) | |
| 1406 { | |
| 1407 SDL_GL_Lock(); | |
| 1408 SDL_GL_UpdateRects(numrects, rects); | |
| 1409 SDL_GL_Unlock(); | |
| 1410 } | |
| 1411 | |
| 1412 /* Update rects without state setting and changing (the caller is responsible for it) */ | |
| 1413 void SDL_GL_UpdateRects(int numrects, SDL_Rect *rects) | |
| 1414 { | |
| 1415 #ifdef HAVE_OPENGL | |
| 1416 SDL_VideoDevice *this = current_video; | |
| 1417 SDL_Rect update, tmp; | |
| 1418 int x, y, i; | |
| 1419 | |
| 1420 for ( i = 0; i < numrects; i++ ) | |
| 1421 { | |
| 1422 tmp.y = rects[i].y; | |
| 1423 tmp.h = rects[i].h; | |
| 1424 for ( y = 0; y <= rects[i].h / 256; y++ ) | |
| 1425 { | |
| 1426 tmp.x = rects[i].x; | |
| 1427 tmp.w = rects[i].w; | |
| 1428 for ( x = 0; x <= rects[i].w / 256; x++ ) | |
| 1429 { | |
| 1430 update.x = tmp.x; | |
| 1431 update.y = tmp.y; | |
| 1432 update.w = tmp.w; | |
| 1433 update.h = tmp.h; | |
| 1434 | |
| 1435 if ( update.w > 256 ) | |
| 1436 update.w = 256; | |
| 1437 | |
| 1438 if ( update.h > 256 ) | |
| 1439 update.h = 256; | |
| 1440 | |
| 1441 this->glFlush(); | |
| 1442 this->glTexSubImage2D( | |
| 1443 GL_TEXTURE_2D, | |
| 1444 0, | |
| 1445 0, | |
| 1446 0, | |
| 1447 update.w, | |
| 1448 update.h, | |
| 1449 this->is_32bit? GL_RGBA : GL_RGB, | |
| 1450 #ifdef GL_VERSION_1_2 | |
| 1451 this->is_32bit ? GL_UNSIGNED_BYTE : GL_UNSIGNED_SHORT_5_6_5, | |
| 1452 #else | |
| 1453 GL_UNSIGNED_BYTE, | |
| 1454 #endif | |
| 1455 (Uint8 *)this->screen->pixels + | |
| 1456 this->screen->format->BytesPerPixel * update.x + | |
| 1457 update.y * this->screen->pitch ); | |
| 1458 | |
| 1459 this->glFlush(); | |
| 1460 /* | |
| 1461 * Note the parens around the function name: | |
| 1462 * This is because some OpenGL implementations define glTexCoord etc | |
| 1463 * as macros, and we don't want them expanded here. | |
| 1464 */ | |
| 1465 this->glBegin(GL_TRIANGLE_STRIP); | |
| 1466 (this->glTexCoord2f)( 0.0, 0.0 ); | |
| 1467 (this->glVertex2i)( update.x, update.y ); | |
| 1468 (this->glTexCoord2f)( (float)(update.w / 256.0), 0.0 ); | |
| 1469 (this->glVertex2i)( update.x + update.w, update.y ); | |
| 1470 (this->glTexCoord2f)( 0.0, (float)(update.h / 256.0) ); | |
| 1471 (this->glVertex2i)( update.x, update.y + update.h ); | |
| 1472 (this->glTexCoord2f)( (float)(update.w / 256.0), (float)(update.h / 256.0) ); | |
| 1473 (this->glVertex2i)( update.x + update.w , update.y + update.h ); | |
| 1474 this->glEnd(); | |
| 1475 | |
| 1476 tmp.x += 256; | |
| 1477 tmp.w -= 256; | |
| 1478 } | |
| 1479 tmp.y += 256; | |
| 1480 tmp.h -= 256; | |
| 1481 } | |
| 1482 } | |
| 1483 #endif | |
| 1484 } | |
| 1485 | |
| 1486 /* Lock == save current state */ | |
| 1487 void SDL_GL_Lock() | |
| 1488 { | |
| 1489 #ifdef HAVE_OPENGL | |
| 1490 lock_count--; | |
| 1491 if (lock_count==-1) | |
| 1492 { | |
| 1493 SDL_VideoDevice *this = current_video; | |
| 1494 | |
| 1495 this->glPushAttrib( GL_ALL_ATTRIB_BITS ); /* TODO: narrow range of what is saved */ | |
|
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1496 #ifdef GL_CLIENT_PIXEL_STORE_BIT |
| 0 | 1497 this->glPushClientAttrib( GL_CLIENT_PIXEL_STORE_BIT ); |
|
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1498 #endif |
| 0 | 1499 |
| 1500 this->glEnable(GL_TEXTURE_2D); | |
| 1501 this->glEnable(GL_BLEND); | |
| 1502 this->glDisable(GL_FOG); | |
| 1503 this->glDisable(GL_ALPHA_TEST); | |
| 1504 this->glDisable(GL_DEPTH_TEST); | |
| 1505 this->glDisable(GL_SCISSOR_TEST); | |
| 1506 this->glDisable(GL_STENCIL_TEST); | |
| 1507 this->glDisable(GL_CULL_FACE); | |
| 1508 | |
| 1509 this->glBindTexture( GL_TEXTURE_2D, this->texture ); | |
| 1510 this->glTexEnvf( GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE ); | |
| 1511 this->glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST ); | |
| 1512 this->glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST ); | |
| 1513 this->glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT ); | |
| 1514 this->glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT ); | |
| 1515 | |
| 1516 this->glPixelStorei( GL_UNPACK_ROW_LENGTH, this->screen->pitch / this->screen->format->BytesPerPixel ); | |
| 1517 this->glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA); | |
| 1518 (this->glColor4f)(1.0, 1.0, 1.0, 1.0); /* Solaris workaround */ | |
| 1519 | |
| 1520 this->glViewport(0, 0, this->screen->w, this->screen->h); | |
| 1521 this->glMatrixMode(GL_PROJECTION); | |
| 1522 this->glPushMatrix(); | |
| 1523 this->glLoadIdentity(); | |
| 1524 | |
| 1525 this->glOrtho(0.0, (GLdouble) this->screen->w, (GLdouble) this->screen->h, 0.0, 0.0, 1.0); | |
| 1526 | |
| 1527 this->glMatrixMode(GL_MODELVIEW); | |
| 1528 this->glPushMatrix(); | |
| 1529 this->glLoadIdentity(); | |
| 1530 } | |
| 1531 #endif | |
| 1532 } | |
| 1533 | |
| 1534 /* Unlock == restore saved state */ | |
| 1535 void SDL_GL_Unlock() | |
| 1536 { | |
| 1537 #ifdef HAVE_OPENGL | |
| 1538 lock_count++; | |
| 1539 if (lock_count==0) | |
| 1540 { | |
| 1541 SDL_VideoDevice *this = current_video; | |
| 1542 | |
| 1543 this->glPopMatrix(); | |
| 1544 this->glMatrixMode(GL_PROJECTION); | |
| 1545 this->glPopMatrix(); | |
| 1546 | |
| 1547 this->glPopClientAttrib(); | |
| 1548 this->glPopAttrib(); | |
| 1549 } | |
| 1550 #endif | |
| 1551 } | |
| 1552 | |
| 1553 /* | |
| 1554 * Sets/Gets the title and icon text of the display window, if any. | |
| 1555 */ | |
| 1556 void SDL_WM_SetCaption (const char *title, const char *icon) | |
| 1557 { | |
| 1558 SDL_VideoDevice *video = current_video; | |
| 1559 SDL_VideoDevice *this = current_video; | |
| 1560 | |
|
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1561 if ( video ) { |
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1562 if ( title ) { |
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1563 if ( video->wm_title ) { |
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1564 free(video->wm_title); |
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1565 } |
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1566 video->wm_title = (char *)malloc(strlen(title)+1); |
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1567 if ( video->wm_title != NULL ) { |
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1568 strcpy(video->wm_title, title); |
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1569 } |
| 0 | 1570 } |
|
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1571 if ( icon ) { |
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1572 if ( video->wm_icon ) { |
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1573 free(video->wm_icon); |
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1574 } |
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1575 video->wm_icon = (char *)malloc(strlen(icon)+1); |
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1576 if ( video->wm_icon != NULL ) { |
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1577 strcpy(video->wm_icon, icon); |
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1578 } |
| 0 | 1579 } |
|
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1580 if ( (title || icon) && (video->SetCaption != NULL) ) { |
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1581 video->SetCaption(this, video->wm_title,video->wm_icon); |
| 0 | 1582 } |
| 1583 } | |
| 1584 } | |
| 1585 void SDL_WM_GetCaption (char **title, char **icon) | |
| 1586 { | |
|
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1587 SDL_VideoDevice *video = current_video; |
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1588 |
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1589 if ( video ) { |
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1590 if ( title ) { |
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1591 *title = video->wm_title; |
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1592 } |
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1593 if ( icon ) { |
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1594 *icon = video->wm_icon; |
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1595 } |
| 0 | 1596 } |
| 1597 } | |
| 1598 | |
| 1599 /* Utility function used by SDL_WM_SetIcon() */ | |
| 1600 static void CreateMaskFromColorKey(SDL_Surface *icon, Uint8 *mask) | |
| 1601 { | |
| 1602 int x, y; | |
| 1603 Uint32 colorkey; | |
| 1604 #define SET_MASKBIT(icon, x, y, mask) \ | |
| 1605 mask[(y*((icon->w+7)/8))+(x/8)] &= ~(0x01<<(7-(x%8))) | |
| 1606 | |
| 1607 colorkey = icon->format->colorkey; | |
| 1608 switch (icon->format->BytesPerPixel) { | |
| 1609 case 1: { Uint8 *pixels; | |
| 1610 for ( y=0; y<icon->h; ++y ) { | |
| 1611 pixels = (Uint8 *)icon->pixels + y*icon->pitch; | |
| 1612 for ( x=0; x<icon->w; ++x ) { | |
| 1613 if ( *pixels++ == colorkey ) { | |
| 1614 SET_MASKBIT(icon, x, y, mask); | |
| 1615 } | |
| 1616 } | |
| 1617 } | |
| 1618 } | |
| 1619 break; | |
| 1620 | |
| 1621 case 2: { Uint16 *pixels; | |
| 1622 for ( y=0; y<icon->h; ++y ) { | |
| 1623 pixels = (Uint16 *)icon->pixels + | |
| 1624 y*icon->pitch/2; | |
| 1625 for ( x=0; x<icon->w; ++x ) { | |
| 1626 if ( *pixels++ == colorkey ) { | |
| 1627 SET_MASKBIT(icon, x, y, mask); | |
| 1628 } | |
| 1629 } | |
| 1630 } | |
| 1631 } | |
| 1632 break; | |
| 1633 | |
| 1634 case 4: { Uint32 *pixels; | |
| 1635 for ( y=0; y<icon->h; ++y ) { | |
| 1636 pixels = (Uint32 *)icon->pixels + | |
| 1637 y*icon->pitch/4; | |
| 1638 for ( x=0; x<icon->w; ++x ) { | |
| 1639 if ( *pixels++ == colorkey ) { | |
| 1640 SET_MASKBIT(icon, x, y, mask); | |
| 1641 } | |
| 1642 } | |
| 1643 } | |
| 1644 } | |
| 1645 break; | |
| 1646 } | |
| 1647 } | |
| 1648 | |
| 1649 /* | |
| 1650 * Sets the window manager icon for the display window. | |
| 1651 */ | |
| 1652 void SDL_WM_SetIcon (SDL_Surface *icon, Uint8 *mask) | |
| 1653 { | |
| 1654 SDL_VideoDevice *video = current_video; | |
| 1655 SDL_VideoDevice *this = current_video; | |
| 1656 | |
| 1657 if ( icon && video->SetIcon ) { | |
| 1658 /* Generate a mask if necessary, and create the icon! */ | |
| 1659 if ( mask == NULL ) { | |
| 1660 int mask_len = icon->h*(icon->w+7)/8; | |
| 1661 mask = (Uint8 *)malloc(mask_len); | |
| 1662 if ( mask == NULL ) { | |
| 1663 return; | |
| 1664 } | |
| 1665 memset(mask, ~0, mask_len); | |
| 1666 if ( icon->flags & SDL_SRCCOLORKEY ) { | |
| 1667 CreateMaskFromColorKey(icon, mask); | |
| 1668 } | |
| 1669 video->SetIcon(video, icon, mask); | |
| 1670 free(mask); | |
| 1671 } else { | |
| 1672 video->SetIcon(this, icon, mask); | |
| 1673 } | |
| 1674 } | |
| 1675 } | |
| 1676 | |
| 1677 /* | |
| 1678 * Grab or ungrab the keyboard and mouse input. | |
| 1679 * This function returns the final grab mode after calling the | |
| 1680 * driver dependent function. | |
| 1681 */ | |
| 1682 static SDL_GrabMode SDL_WM_GrabInputRaw(SDL_GrabMode mode) | |
| 1683 { | |
| 1684 SDL_VideoDevice *video = current_video; | |
| 1685 SDL_VideoDevice *this = current_video; | |
| 1686 | |
| 1687 /* Only do something if we have support for grabs */ | |
| 1688 if ( video->GrabInput == NULL ) { | |
| 1689 return(video->input_grab); | |
| 1690 } | |
| 1691 | |
| 1692 /* If the final grab mode if off, only then do we actually grab */ | |
| 1693 #ifdef DEBUG_GRAB | |
| 1694 printf("SDL_WM_GrabInputRaw(%d) ... ", mode); | |
| 1695 #endif | |
| 1696 if ( mode == SDL_GRAB_OFF ) { | |
| 1697 if ( video->input_grab != SDL_GRAB_OFF ) { | |
| 1698 mode = video->GrabInput(this, mode); | |
| 1699 } | |
| 1700 } else { | |
| 1701 if ( video->input_grab == SDL_GRAB_OFF ) { | |
| 1702 mode = video->GrabInput(this, mode); | |
| 1703 } | |
| 1704 } | |
| 1705 if ( mode != video->input_grab ) { | |
| 1706 video->input_grab = mode; | |
| 1707 if ( video->CheckMouseMode ) { | |
| 1708 video->CheckMouseMode(this); | |
| 1709 } | |
| 1710 } | |
| 1711 #ifdef DEBUG_GRAB | |
| 1712 printf("Final mode %d\n", video->input_grab); | |
| 1713 #endif | |
| 1714 | |
| 1715 /* Return the final grab state */ | |
| 1716 if ( mode >= SDL_GRAB_FULLSCREEN ) { | |
| 1717 mode -= SDL_GRAB_FULLSCREEN; | |
| 1718 } | |
| 1719 return(mode); | |
| 1720 } | |
| 1721 SDL_GrabMode SDL_WM_GrabInput(SDL_GrabMode mode) | |
| 1722 { | |
| 1723 SDL_VideoDevice *video = current_video; | |
| 1724 | |
|
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1725 /* If the video isn't initialized yet, we can't do anything */ |
|
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1726 if ( ! video ) { |
|
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1727 return SDL_GRAB_OFF; |
|
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1728 } |
| 0 | 1729 |
| 1730 /* Return the current mode on query */ | |
| 1731 if ( mode == SDL_GRAB_QUERY ) { | |
| 1732 mode = video->input_grab; | |
| 1733 if ( mode >= SDL_GRAB_FULLSCREEN ) { | |
| 1734 mode -= SDL_GRAB_FULLSCREEN; | |
| 1735 } | |
| 1736 return(mode); | |
| 1737 } | |
| 1738 | |
| 1739 #ifdef DEBUG_GRAB | |
| 1740 printf("SDL_WM_GrabInput(%d) ... ", mode); | |
| 1741 #endif | |
| 1742 /* If the video surface is fullscreen, we always grab */ | |
| 1743 if ( mode >= SDL_GRAB_FULLSCREEN ) { | |
| 1744 mode -= SDL_GRAB_FULLSCREEN; | |
| 1745 } | |
| 1746 if ( SDL_VideoSurface && (SDL_VideoSurface->flags & SDL_FULLSCREEN) ) { | |
| 1747 mode += SDL_GRAB_FULLSCREEN; | |
| 1748 } | |
| 1749 return(SDL_WM_GrabInputRaw(mode)); | |
| 1750 } | |
| 1751 static SDL_GrabMode SDL_WM_GrabInputOff(void) | |
| 1752 { | |
| 1753 SDL_GrabMode mode; | |
| 1754 | |
| 1755 /* First query the current grab state */ | |
| 1756 mode = SDL_WM_GrabInput(SDL_GRAB_QUERY); | |
| 1757 | |
| 1758 /* Now explicitly turn off input grab */ | |
| 1759 SDL_WM_GrabInputRaw(SDL_GRAB_OFF); | |
| 1760 | |
| 1761 /* Return the old state */ | |
| 1762 return(mode); | |
| 1763 } | |
| 1764 | |
| 1765 /* | |
| 1766 * Iconify the window in window managed environments. | |
| 1767 * A successful iconification will result in an SDL_APPACTIVE loss event. | |
| 1768 */ | |
| 1769 int SDL_WM_IconifyWindow(void) | |
| 1770 { | |
| 1771 SDL_VideoDevice *video = current_video; | |
| 1772 SDL_VideoDevice *this = current_video; | |
| 1773 int retval; | |
| 1774 | |
| 1775 retval = 0; | |
| 1776 if ( video->IconifyWindow ) { | |
| 1777 retval = video->IconifyWindow(this); | |
| 1778 } | |
| 1779 return(retval); | |
| 1780 } | |
| 1781 | |
| 1782 /* | |
| 1783 * Toggle fullscreen mode | |
| 1784 */ | |
| 1785 int SDL_WM_ToggleFullScreen(SDL_Surface *surface) | |
| 1786 { | |
| 1787 SDL_VideoDevice *video = current_video; | |
| 1788 SDL_VideoDevice *this = current_video; | |
| 1789 int toggled; | |
| 1790 | |
| 1791 toggled = 0; | |
| 1792 if ( SDL_PublicSurface && (surface == SDL_PublicSurface) && | |
| 1793 video->ToggleFullScreen ) { | |
| 1794 if ( surface->flags & SDL_FULLSCREEN ) { | |
| 1795 toggled = video->ToggleFullScreen(this, 0); | |
| 1796 if ( toggled ) { | |
| 1797 SDL_VideoSurface->flags &= ~SDL_FULLSCREEN; | |
| 1798 SDL_PublicSurface->flags &= ~SDL_FULLSCREEN; | |
| 1799 } | |
| 1800 } else { | |
| 1801 toggled = video->ToggleFullScreen(this, 1); | |
| 1802 if ( toggled ) { | |
| 1803 SDL_VideoSurface->flags |= SDL_FULLSCREEN; | |
| 1804 SDL_PublicSurface->flags |= SDL_FULLSCREEN; | |
| 1805 } | |
| 1806 } | |
| 1807 /* Double-check the grab state inside SDL_WM_GrabInput() */ | |
| 1808 if ( toggled ) { | |
| 1809 SDL_WM_GrabInput(video->input_grab); | |
| 1810 } | |
| 1811 } | |
| 1812 return(toggled); | |
| 1813 } | |
| 1814 | |
| 1815 /* | |
| 1816 * Get some platform dependent window manager information | |
| 1817 */ | |
| 1818 int SDL_GetWMInfo (SDL_SysWMinfo *info) | |
| 1819 { | |
| 1820 SDL_VideoDevice *video = current_video; | |
| 1821 SDL_VideoDevice *this = current_video; | |
| 1822 | |
| 1823 if ( video && video->GetWMInfo ) { | |
| 1824 return(video->GetWMInfo(this, info)); | |
| 1825 } else { | |
| 1826 return(0); | |
| 1827 } | |
| 1828 } |