| 1 | /* |
| 2 | SDL - Simple DirectMedia Layer |
| 3 | Copyright (C) 1997-2009 Sam Lantinga |
| 4 | |
| 5 | This library is free software; you can redistribute it and/or |
| 6 | modify it under the terms of the GNU Lesser General Public |
| 7 | License as published by the Free Software Foundation; either |
| 8 | version 2.1 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 | Lesser General Public License for more details. |
| 14 | |
| 15 | You should have received a copy of the GNU Lesser General Public |
| 16 | License along with this library; if not, write to the Free Software |
| 17 | Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
| 18 | |
| 19 | Sam Lantinga |
| 20 | slouken@libsdl.org |
| 21 | */ |
| 22 | #include "SDL_config.h" |
| 23 | |
| 24 | /* The high-level video driver subsystem */ |
| 25 | |
| 26 | #include "SDL.h" |
| 27 | #include "SDL_sysvideo.h" |
| 28 | #include "SDL_blit.h" |
| 29 | #include "SDL_pixels_c.h" |
| 30 | #include "SDL_cursor_c.h" |
| 31 | #include "../events/SDL_sysevents.h" |
| 32 | #include "../events/SDL_events_c.h" |
| 33 | |
| 34 | /* Available video drivers */ |
| 35 | static VideoBootStrap *bootstrap[] = { |
| 36 | #if SDL_VIDEO_DRIVER_QUARTZ |
| 37 | &QZ_bootstrap, |
| 38 | #endif |
| 39 | #if SDL_VIDEO_DRIVER_X11 |
| 40 | &X11_bootstrap, |
| 41 | #endif |
| 42 | #if SDL_VIDEO_DRIVER_DGA |
| 43 | &DGA_bootstrap, |
| 44 | #endif |
| 45 | #if SDL_VIDEO_DRIVER_NANOX |
| 46 | &NX_bootstrap, |
| 47 | #endif |
| 48 | #if SDL_VIDEO_DRIVER_IPOD |
| 49 | &iPod_bootstrap, |
| 50 | #endif |
| 51 | #if SDL_VIDEO_DRIVER_QTOPIA |
| 52 | &Qtopia_bootstrap, |
| 53 | #endif |
| 54 | #if SDL_VIDEO_DRIVER_WSCONS |
| 55 | &WSCONS_bootstrap, |
| 56 | #endif |
| 57 | #if SDL_VIDEO_DRIVER_FBCON |
| 58 | &FBCON_bootstrap, |
| 59 | #endif |
| 60 | #if SDL_VIDEO_DRIVER_DIRECTFB |
| 61 | &DirectFB_bootstrap, |
| 62 | #endif |
| 63 | #if SDL_VIDEO_DRIVER_PS2GS |
| 64 | &PS2GS_bootstrap, |
| 65 | #endif |
| 66 | #if SDL_VIDEO_DRIVER_PS3 |
| 67 | &PS3_bootstrap, |
| 68 | #endif |
| 69 | #if SDL_VIDEO_DRIVER_GGI |
| 70 | &GGI_bootstrap, |
| 71 | #endif |
| 72 | #if SDL_VIDEO_DRIVER_VGL |
| 73 | &VGL_bootstrap, |
| 74 | #endif |
| 75 | #if SDL_VIDEO_DRIVER_SVGALIB |
| 76 | &SVGALIB_bootstrap, |
| 77 | #endif |
| 78 | #if SDL_VIDEO_DRIVER_GAPI |
| 79 | &GAPI_bootstrap, |
| 80 | #endif |
| 81 | #if SDL_VIDEO_DRIVER_WINDIB |
| 82 | &WINDIB_bootstrap, |
| 83 | #endif |
| 84 | #if SDL_VIDEO_DRIVER_DDRAW |
| 85 | &DIRECTX_bootstrap, |
| 86 | #endif |
| 87 | #if SDL_VIDEO_DRIVER_BWINDOW |
| 88 | &BWINDOW_bootstrap, |
| 89 | #endif |
| 90 | #if SDL_VIDEO_DRIVER_TOOLBOX |
| 91 | &TOOLBOX_bootstrap, |
| 92 | #endif |
| 93 | #if SDL_VIDEO_DRIVER_DRAWSPROCKET |
| 94 | &DSp_bootstrap, |
| 95 | #endif |
| 96 | #if SDL_VIDEO_DRIVER_PHOTON |
| 97 | &ph_bootstrap, |
| 98 | #endif |
| 99 | #if SDL_VIDEO_DRIVER_EPOC |
| 100 | &EPOC_bootstrap, |
| 101 | #endif |
| 102 | #if SDL_VIDEO_DRIVER_XBIOS |
| 103 | &XBIOS_bootstrap, |
| 104 | #endif |
| 105 | #if SDL_VIDEO_DRIVER_GEM |
| 106 | &GEM_bootstrap, |
| 107 | #endif |
| 108 | #if SDL_VIDEO_DRIVER_PICOGUI |
| 109 | &PG_bootstrap, |
| 110 | #endif |
| 111 | #if SDL_VIDEO_DRIVER_DC |
| 112 | &DC_bootstrap, |
| 113 | #endif |
| 114 | #if SDL_VIDEO_DRIVER_NDS |
| 115 | &NDS_bootstrap, |
| 116 | #endif |
| 117 | #if SDL_VIDEO_DRIVER_RISCOS |
| 118 | &RISCOS_bootstrap, |
| 119 | #endif |
| 120 | #if SDL_VIDEO_DRIVER_OS2FS |
| 121 | &OS2FSLib_bootstrap, |
| 122 | #endif |
| 123 | #if SDL_VIDEO_DRIVER_AALIB |
| 124 | &AALIB_bootstrap, |
| 125 | #endif |
| 126 | #if SDL_VIDEO_DRIVER_CACA |
| 127 | &CACA_bootstrap, |
| 128 | #endif |
| 129 | #if SDL_VIDEO_DRIVER_OMAPDSS |
| 130 | &omapdss_bootstrap, |
| 131 | #endif |
| 132 | #if SDL_VIDEO_DRIVER_DUMMY |
| 133 | &DUMMY_bootstrap, |
| 134 | #endif |
| 135 | NULL |
| 136 | }; |
| 137 | |
| 138 | SDL_VideoDevice *current_video = NULL; |
| 139 | |
| 140 | /* Various local functions */ |
| 141 | int SDL_VideoInit(const char *driver_name, Uint32 flags); |
| 142 | void SDL_VideoQuit(void); |
| 143 | void SDL_GL_UpdateRectsLock(SDL_VideoDevice* this, int numrects, SDL_Rect* rects); |
| 144 | |
| 145 | static SDL_GrabMode SDL_WM_GrabInputOff(void); |
| 146 | #if SDL_VIDEO_OPENGL |
| 147 | static int lock_count = 0; |
| 148 | #endif |
| 149 | |
| 150 | |
| 151 | /* |
| 152 | * Initialize the video and event subsystems -- determine native pixel format |
| 153 | */ |
| 154 | int SDL_VideoInit (const char *driver_name, Uint32 flags) |
| 155 | { |
| 156 | SDL_VideoDevice *video; |
| 157 | int index; |
| 158 | int i; |
| 159 | SDL_PixelFormat vformat; |
| 160 | Uint32 video_flags; |
| 161 | |
| 162 | /* Toggle the event thread flags, based on OS requirements */ |
| 163 | #if defined(MUST_THREAD_EVENTS) |
| 164 | flags |= SDL_INIT_EVENTTHREAD; |
| 165 | #elif defined(CANT_THREAD_EVENTS) |
| 166 | if ( (flags & SDL_INIT_EVENTTHREAD) == SDL_INIT_EVENTTHREAD ) { |
| 167 | SDL_SetError("OS doesn't support threaded events"); |
| 168 | return(-1); |
| 169 | } |
| 170 | #endif |
| 171 | |
| 172 | /* Check to make sure we don't overwrite 'current_video' */ |
| 173 | if ( current_video != NULL ) { |
| 174 | SDL_VideoQuit(); |
| 175 | } |
| 176 | |
| 177 | /* Select the proper video driver */ |
| 178 | index = 0; |
| 179 | video = NULL; |
| 180 | if ( driver_name != NULL ) { |
| 181 | #if 0 /* This will be replaced with a better driver selection API */ |
| 182 | if ( SDL_strrchr(driver_name, ':') != NULL ) { |
| 183 | index = atoi(SDL_strrchr(driver_name, ':')+1); |
| 184 | } |
| 185 | #endif |
| 186 | for ( i=0; bootstrap[i]; ++i ) { |
| 187 | if ( SDL_strcasecmp(bootstrap[i]->name, driver_name) == 0) { |
| 188 | if ( bootstrap[i]->available() ) { |
| 189 | video = bootstrap[i]->create(index); |
| 190 | break; |
| 191 | } |
| 192 | } |
| 193 | } |
| 194 | } else { |
| 195 | for ( i=0; bootstrap[i]; ++i ) { |
| 196 | if ( bootstrap[i]->available() ) { |
| 197 | video = bootstrap[i]->create(index); |
| 198 | if ( video != NULL ) { |
| 199 | break; |
| 200 | } |
| 201 | } |
| 202 | } |
| 203 | } |
| 204 | if ( video == NULL ) { |
| 205 | SDL_SetError("No available video device"); |
| 206 | return(-1); |
| 207 | } |
| 208 | current_video = video; |
| 209 | current_video->name = bootstrap[i]->name; |
| 210 | |
| 211 | /* Do some basic variable initialization */ |
| 212 | video->screen = NULL; |
| 213 | video->shadow = NULL; |
| 214 | video->visible = NULL; |
| 215 | video->physpal = NULL; |
| 216 | video->gammacols = NULL; |
| 217 | video->gamma = NULL; |
| 218 | video->wm_title = NULL; |
| 219 | video->wm_icon = NULL; |
| 220 | video->offset_x = 0; |
| 221 | video->offset_y = 0; |
| 222 | SDL_memset(&video->info, 0, (sizeof video->info)); |
| 223 | |
| 224 | video->displayformatalphapixel = NULL; |
| 225 | |
| 226 | /* Set some very sane GL defaults */ |
| 227 | video->gl_config.driver_loaded = 0; |
| 228 | video->gl_config.dll_handle = NULL; |
| 229 | video->gl_config.red_size = 3; |
| 230 | video->gl_config.green_size = 3; |
| 231 | video->gl_config.blue_size = 2; |
| 232 | video->gl_config.alpha_size = 0; |
| 233 | video->gl_config.buffer_size = 0; |
| 234 | video->gl_config.depth_size = 16; |
| 235 | video->gl_config.stencil_size = 0; |
| 236 | video->gl_config.double_buffer = 1; |
| 237 | video->gl_config.accum_red_size = 0; |
| 238 | video->gl_config.accum_green_size = 0; |
| 239 | video->gl_config.accum_blue_size = 0; |
| 240 | video->gl_config.accum_alpha_size = 0; |
| 241 | video->gl_config.stereo = 0; |
| 242 | video->gl_config.multisamplebuffers = 0; |
| 243 | video->gl_config.multisamplesamples = 0; |
| 244 | video->gl_config.accelerated = -1; /* not known, don't set */ |
| 245 | video->gl_config.swap_control = -1; /* not known, don't set */ |
| 246 | |
| 247 | /* Initialize the video subsystem */ |
| 248 | SDL_memset(&vformat, 0, sizeof(vformat)); |
| 249 | if ( video->VideoInit(video, &vformat) < 0 ) { |
| 250 | SDL_VideoQuit(); |
| 251 | return(-1); |
| 252 | } |
| 253 | |
| 254 | /* Create a zero sized video surface of the appropriate format */ |
| 255 | video_flags = SDL_SWSURFACE; |
| 256 | SDL_VideoSurface = SDL_CreateRGBSurface(video_flags, 0, 0, |
| 257 | vformat.BitsPerPixel, |
| 258 | vformat.Rmask, vformat.Gmask, vformat.Bmask, 0); |
| 259 | if ( SDL_VideoSurface == NULL ) { |
| 260 | SDL_VideoQuit(); |
| 261 | return(-1); |
| 262 | } |
| 263 | SDL_PublicSurface = NULL; /* Until SDL_SetVideoMode() */ |
| 264 | |
| 265 | #if 0 /* Don't change the current palette - may be used by other programs. |
| 266 | * The application can't do anything with the display surface until |
| 267 | * a video mode has been set anyway. :) |
| 268 | */ |
| 269 | /* If we have a palettized surface, create a default palette */ |
| 270 | if ( SDL_VideoSurface->format->palette ) { |
| 271 | SDL_PixelFormat *vf = SDL_VideoSurface->format; |
| 272 | SDL_DitherColors(vf->palette->colors, vf->BitsPerPixel); |
| 273 | video->SetColors(video, |
| 274 | 0, vf->palette->ncolors, vf->palette->colors); |
| 275 | } |
| 276 | #endif |
| 277 | video->info.vfmt = SDL_VideoSurface->format; |
| 278 | |
| 279 | /* Start the event loop */ |
| 280 | if ( SDL_StartEventLoop(flags) < 0 ) { |
| 281 | SDL_VideoQuit(); |
| 282 | return(-1); |
| 283 | } |
| 284 | SDL_CursorInit(flags & SDL_INIT_EVENTTHREAD); |
| 285 | |
| 286 | /* We're ready to go! */ |
| 287 | return(0); |
| 288 | } |
| 289 | |
| 290 | char *SDL_VideoDriverName(char *namebuf, int maxlen) |
| 291 | { |
| 292 | if ( current_video != NULL ) { |
| 293 | SDL_strlcpy(namebuf, current_video->name, maxlen); |
| 294 | return(namebuf); |
| 295 | } |
| 296 | return(NULL); |
| 297 | } |
| 298 | |
| 299 | /* |
| 300 | * Get the current display surface |
| 301 | */ |
| 302 | SDL_Surface *SDL_GetVideoSurface(void) |
| 303 | { |
| 304 | SDL_Surface *visible; |
| 305 | |
| 306 | visible = NULL; |
| 307 | if ( current_video ) { |
| 308 | visible = current_video->visible; |
| 309 | } |
| 310 | return(visible); |
| 311 | } |
| 312 | |
| 313 | /* |
| 314 | * Get the current information about the video hardware |
| 315 | */ |
| 316 | const SDL_VideoInfo *SDL_GetVideoInfo(void) |
| 317 | { |
| 318 | const SDL_VideoInfo *info; |
| 319 | |
| 320 | info = NULL; |
| 321 | if ( current_video ) { |
| 322 | info = ¤t_video->info; |
| 323 | } |
| 324 | return(info); |
| 325 | } |
| 326 | |
| 327 | /* |
| 328 | * Return a pointer to an array of available screen dimensions for the |
| 329 | * given format, sorted largest to smallest. Returns NULL if there are |
| 330 | * no dimensions available for a particular format, or (SDL_Rect **)-1 |
| 331 | * if any dimension is okay for the given format. If 'format' is NULL, |
| 332 | * the mode list will be for the format given by SDL_GetVideoInfo()->vfmt |
| 333 | */ |
| 334 | SDL_Rect ** SDL_ListModes (SDL_PixelFormat *format, Uint32 flags) |
| 335 | { |
| 336 | SDL_VideoDevice *video = current_video; |
| 337 | SDL_VideoDevice *this = current_video; |
| 338 | SDL_Rect **modes; |
| 339 | |
| 340 | modes = NULL; |
| 341 | if ( SDL_VideoSurface ) { |
| 342 | if ( format == NULL ) { |
| 343 | format = SDL_VideoSurface->format; |
| 344 | } |
| 345 | modes = video->ListModes(this, format, flags); |
| 346 | } |
| 347 | return(modes); |
| 348 | } |
| 349 | |
| 350 | /* |
| 351 | * Check to see if a particular video mode is supported. |
| 352 | * It returns 0 if the requested mode is not supported under any bit depth, |
| 353 | * or returns the bits-per-pixel of the closest available mode with the |
| 354 | * given width and height. If this bits-per-pixel is different from the |
| 355 | * one used when setting the video mode, SDL_SetVideoMode() will succeed, |
| 356 | * but will emulate the requested bits-per-pixel with a shadow surface. |
| 357 | */ |
| 358 | static Uint8 SDL_closest_depths[4][8] = { |
| 359 | /* 8 bit closest depth ordering */ |
| 360 | { 0, 8, 16, 15, 32, 24, 0, 0 }, |
| 361 | /* 15,16 bit closest depth ordering */ |
| 362 | { 0, 16, 15, 32, 24, 8, 0, 0 }, |
| 363 | /* 24 bit closest depth ordering */ |
| 364 | { 0, 24, 32, 16, 15, 8, 0, 0 }, |
| 365 | /* 32 bit closest depth ordering */ |
| 366 | { 0, 32, 16, 15, 24, 8, 0, 0 } |
| 367 | }; |
| 368 | |
| 369 | |
| 370 | #ifdef __MACOS__ /* MPW optimization bug? */ |
| 371 | #define NEGATIVE_ONE 0xFFFFFFFF |
| 372 | #else |
| 373 | #define NEGATIVE_ONE -1 |
| 374 | #endif |
| 375 | |
| 376 | int SDL_VideoModeOK (int width, int height, int bpp, Uint32 flags) |
| 377 | { |
| 378 | int table, b, i; |
| 379 | int supported; |
| 380 | SDL_PixelFormat format; |
| 381 | SDL_Rect **sizes; |
| 382 | |
| 383 | /* Currently 1 and 4 bpp are not supported */ |
| 384 | if ( bpp < 8 || bpp > 32 ) { |
| 385 | return(0); |
| 386 | } |
| 387 | if ( (width <= 0) || (height <= 0) ) { |
| 388 | return(0); |
| 389 | } |
| 390 | |
| 391 | /* Search through the list valid of modes */ |
| 392 | SDL_memset(&format, 0, sizeof(format)); |
| 393 | supported = 0; |
| 394 | table = ((bpp+7)/8)-1; |
| 395 | SDL_closest_depths[table][0] = bpp; |
| 396 | SDL_closest_depths[table][7] = 0; |
| 397 | for ( b = 0; !supported && SDL_closest_depths[table][b]; ++b ) { |
| 398 | format.BitsPerPixel = SDL_closest_depths[table][b]; |
| 399 | sizes = SDL_ListModes(&format, flags); |
| 400 | if ( sizes == (SDL_Rect **)0 ) { |
| 401 | /* No sizes supported at this bit-depth */ |
| 402 | continue; |
| 403 | } else |
| 404 | if (sizes == (SDL_Rect **)NEGATIVE_ONE) { |
| 405 | /* Any size supported at this bit-depth */ |
| 406 | supported = 1; |
| 407 | continue; |
| 408 | } else if (current_video->handles_any_size) { |
| 409 | /* Driver can center a smaller surface to simulate fullscreen */ |
| 410 | for ( i=0; sizes[i]; ++i ) { |
| 411 | if ((sizes[i]->w >= width) && (sizes[i]->h >= height)) { |
| 412 | supported = 1; /* this mode can fit the centered window. */ |
| 413 | break; |
| 414 | } |
| 415 | } |
| 416 | } else |
| 417 | for ( i=0; sizes[i]; ++i ) { |
| 418 | if ((sizes[i]->w == width) && (sizes[i]->h == height)) { |
| 419 | supported = 1; |
| 420 | break; |
| 421 | } |
| 422 | } |
| 423 | } |
| 424 | if ( supported ) { |
| 425 | --b; |
| 426 | return(SDL_closest_depths[table][b]); |
| 427 | } else { |
| 428 | return(0); |
| 429 | } |
| 430 | } |
| 431 | |
| 432 | /* |
| 433 | * Get the closest non-emulated video mode to the one requested |
| 434 | */ |
| 435 | static int SDL_GetVideoMode (int *w, int *h, int *BitsPerPixel, Uint32 flags) |
| 436 | { |
| 437 | int table, b, i; |
| 438 | int supported; |
| 439 | int native_bpp; |
| 440 | SDL_PixelFormat format; |
| 441 | SDL_Rect **sizes; |
| 442 | |
| 443 | /* Check parameters */ |
| 444 | if ( *BitsPerPixel < 8 || *BitsPerPixel > 32 ) { |
| 445 | SDL_SetError("Invalid bits per pixel (range is {8...32})"); |
| 446 | return(0); |
| 447 | } |
| 448 | if ((*w <= 0) || (*h <= 0)) { |
| 449 | SDL_SetError("Invalid width or height"); |
| 450 | return(0); |
| 451 | } |
| 452 | |
| 453 | /* Try the original video mode, get the closest depth */ |
| 454 | native_bpp = SDL_VideoModeOK(*w, *h, *BitsPerPixel, flags); |
| 455 | if ( native_bpp == *BitsPerPixel ) { |
| 456 | return(1); |
| 457 | } |
| 458 | if ( native_bpp > 0 ) { |
| 459 | *BitsPerPixel = native_bpp; |
| 460 | return(1); |
| 461 | } |
| 462 | |
| 463 | /* No exact size match at any depth, look for closest match */ |
| 464 | SDL_memset(&format, 0, sizeof(format)); |
| 465 | supported = 0; |
| 466 | table = ((*BitsPerPixel+7)/8)-1; |
| 467 | SDL_closest_depths[table][0] = *BitsPerPixel; |
| 468 | SDL_closest_depths[table][7] = SDL_VideoSurface->format->BitsPerPixel; |
| 469 | for ( b = 0; !supported && SDL_closest_depths[table][b]; ++b ) { |
| 470 | int best; |
| 471 | |
| 472 | format.BitsPerPixel = SDL_closest_depths[table][b]; |
| 473 | sizes = SDL_ListModes(&format, flags); |
| 474 | if ( sizes == (SDL_Rect **)0 ) { |
| 475 | /* No sizes supported at this bit-depth */ |
| 476 | continue; |
| 477 | } |
| 478 | best=0; |
| 479 | for ( i=0; sizes[i]; ++i ) { |
| 480 | /* Mode with both dimensions bigger or equal than asked ? */ |
| 481 | if ((sizes[i]->w >= *w) && (sizes[i]->h >= *h)) { |
| 482 | /* Mode with any dimension smaller or equal than current best ? */ |
| 483 | if ((sizes[i]->w <= sizes[best]->w) || (sizes[i]->h <= sizes[best]->h)) { |
| 484 | /* Now choose the mode that has less pixels */ |
| 485 | if ((sizes[i]->w * sizes[i]->h) <= (sizes[best]->w * sizes[best]->h)) { |
| 486 | best=i; |
| 487 | supported = 1; |
| 488 | } |
| 489 | } |
| 490 | } |
| 491 | } |
| 492 | if (supported) { |
| 493 | *w=sizes[best]->w; |
| 494 | *h=sizes[best]->h; |
| 495 | *BitsPerPixel = SDL_closest_depths[table][b]; |
| 496 | } |
| 497 | } |
| 498 | if ( ! supported ) { |
| 499 | SDL_SetError("No video mode large enough for %dx%d", *w, *h); |
| 500 | } |
| 501 | return(supported); |
| 502 | } |
| 503 | |
| 504 | /* This should probably go somewhere else -- like SDL_surface.c */ |
| 505 | static void SDL_ClearSurface(SDL_Surface *surface) |
| 506 | { |
| 507 | Uint32 black; |
| 508 | |
| 509 | black = SDL_MapRGB(surface->format, 0, 0, 0); |
| 510 | SDL_FillRect(surface, NULL, black); |
| 511 | if ((surface->flags&SDL_HWSURFACE) && (surface->flags&SDL_DOUBLEBUF)) { |
| 512 | SDL_Flip(surface); |
| 513 | SDL_FillRect(surface, NULL, black); |
| 514 | } |
| 515 | if (surface->flags&SDL_FULLSCREEN) { |
| 516 | SDL_Flip(surface); |
| 517 | } |
| 518 | } |
| 519 | |
| 520 | /* |
| 521 | * Create a shadow surface suitable for fooling the app. :-) |
| 522 | */ |
| 523 | static void SDL_CreateShadowSurface(int depth) |
| 524 | { |
| 525 | Uint32 Rmask, Gmask, Bmask; |
| 526 | |
| 527 | /* Allocate the shadow surface */ |
| 528 | if ( depth == (SDL_VideoSurface->format)->BitsPerPixel ) { |
| 529 | Rmask = (SDL_VideoSurface->format)->Rmask; |
| 530 | Gmask = (SDL_VideoSurface->format)->Gmask; |
| 531 | Bmask = (SDL_VideoSurface->format)->Bmask; |
| 532 | } else { |
| 533 | Rmask = Gmask = Bmask = 0; |
| 534 | } |
| 535 | SDL_ShadowSurface = SDL_CreateRGBSurface(SDL_SWSURFACE, |
| 536 | SDL_VideoSurface->w, SDL_VideoSurface->h, |
| 537 | depth, Rmask, Gmask, Bmask, 0); |
| 538 | if ( SDL_ShadowSurface == NULL ) { |
| 539 | return; |
| 540 | } |
| 541 | |
| 542 | /* 8-bit shadow surfaces report that they have exclusive palette */ |
| 543 | if ( SDL_ShadowSurface->format->palette ) { |
| 544 | SDL_ShadowSurface->flags |= SDL_HWPALETTE; |
| 545 | if ( depth == (SDL_VideoSurface->format)->BitsPerPixel ) { |
| 546 | SDL_memcpy(SDL_ShadowSurface->format->palette->colors, |
| 547 | SDL_VideoSurface->format->palette->colors, |
| 548 | SDL_VideoSurface->format->palette->ncolors* |
| 549 | sizeof(SDL_Color)); |
| 550 | } else { |
| 551 | SDL_DitherColors( |
| 552 | SDL_ShadowSurface->format->palette->colors, depth); |
| 553 | } |
| 554 | } |
| 555 | |
| 556 | /* If the video surface is resizable, the shadow should say so */ |
| 557 | if ( (SDL_VideoSurface->flags & SDL_RESIZABLE) == SDL_RESIZABLE ) { |
| 558 | SDL_ShadowSurface->flags |= SDL_RESIZABLE; |
| 559 | } |
| 560 | /* If the video surface has no frame, the shadow should say so */ |
| 561 | if ( (SDL_VideoSurface->flags & SDL_NOFRAME) == SDL_NOFRAME ) { |
| 562 | SDL_ShadowSurface->flags |= SDL_NOFRAME; |
| 563 | } |
| 564 | /* If the video surface is fullscreen, the shadow should say so */ |
| 565 | if ( (SDL_VideoSurface->flags & SDL_FULLSCREEN) == SDL_FULLSCREEN ) { |
| 566 | SDL_ShadowSurface->flags |= SDL_FULLSCREEN; |
| 567 | } |
| 568 | /* If the video surface is flippable, the shadow should say so */ |
| 569 | if ( (SDL_VideoSurface->flags & SDL_DOUBLEBUF) == SDL_DOUBLEBUF ) { |
| 570 | SDL_ShadowSurface->flags |= SDL_DOUBLEBUF; |
| 571 | } |
| 572 | return; |
| 573 | } |
| 574 | |
| 575 | #ifdef __QNXNTO__ |
| 576 | #include <sys/neutrino.h> |
| 577 | #endif /* __QNXNTO__ */ |
| 578 | |
| 579 | /* |
| 580 | * Set the requested video mode, allocating a shadow buffer if necessary. |
| 581 | */ |
| 582 | SDL_Surface * SDL_SetVideoMode (int width, int height, int bpp, Uint32 flags) |
| 583 | { |
| 584 | SDL_VideoDevice *video, *this; |
| 585 | SDL_Surface *prev_mode, *mode; |
| 586 | int video_w; |
| 587 | int video_h; |
| 588 | int video_bpp; |
| 589 | int is_opengl; |
| 590 | SDL_GrabMode saved_grab; |
| 591 | |
| 592 | /* Start up the video driver, if necessary.. |
| 593 | WARNING: This is the only function protected this way! |
| 594 | */ |
| 595 | if ( ! current_video ) { |
| 596 | if ( SDL_Init(SDL_INIT_VIDEO|SDL_INIT_NOPARACHUTE) < 0 ) { |
| 597 | return(NULL); |
| 598 | } |
| 599 | } |
| 600 | this = video = current_video; |
| 601 | |
| 602 | /* Default to the current width and height */ |
| 603 | if ( width == 0 ) { |
| 604 | width = video->info.current_w; |
| 605 | } |
| 606 | if ( height == 0 ) { |
| 607 | height = video->info.current_h; |
| 608 | } |
| 609 | /* Default to the current video bpp */ |
| 610 | if ( bpp == 0 ) { |
| 611 | flags |= SDL_ANYFORMAT; |
| 612 | bpp = SDL_VideoSurface->format->BitsPerPixel; |
| 613 | } |
| 614 | |
| 615 | /* Get a good video mode, the closest one possible */ |
| 616 | video_w = width; |
| 617 | video_h = height; |
| 618 | video_bpp = bpp; |
| 619 | if ( ! SDL_GetVideoMode(&video_w, &video_h, &video_bpp, flags) ) { |
| 620 | return(NULL); |
| 621 | } |
| 622 | |
| 623 | /* Check the requested flags */ |
| 624 | /* There's no palette in > 8 bits-per-pixel mode */ |
| 625 | if ( video_bpp > 8 ) { |
| 626 | flags &= ~SDL_HWPALETTE; |
| 627 | } |
| 628 | #if 0 |
| 629 | if ( (flags&SDL_FULLSCREEN) != SDL_FULLSCREEN ) { |
| 630 | /* There's no windowed double-buffering */ |
| 631 | flags &= ~SDL_DOUBLEBUF; |
| 632 | } |
| 633 | #endif |
| 634 | if ( (flags&SDL_DOUBLEBUF) == SDL_DOUBLEBUF ) { |
| 635 | /* Use hardware surfaces when double-buffering */ |
| 636 | flags |= SDL_HWSURFACE; |
| 637 | } |
| 638 | |
| 639 | is_opengl = ( ( flags & SDL_OPENGL ) == SDL_OPENGL ); |
| 640 | if ( is_opengl ) { |
| 641 | /* These flags are for 2D video modes only */ |
| 642 | flags &= ~(SDL_HWSURFACE|SDL_DOUBLEBUF); |
| 643 | } |
| 644 | |
| 645 | /* Reset the keyboard here so event callbacks can run */ |
| 646 | SDL_ResetKeyboard(); |
| 647 | SDL_ResetMouse(); |
| 648 | SDL_SetMouseRange(width, height); |
| 649 | SDL_cursorstate &= ~CURSOR_USINGSW; |
| 650 | |
| 651 | /* Clean up any previous video mode */ |
| 652 | if ( SDL_PublicSurface != NULL ) { |
| 653 | SDL_PublicSurface = NULL; |
| 654 | } |
| 655 | if ( SDL_ShadowSurface != NULL ) { |
| 656 | SDL_Surface *ready_to_go; |
| 657 | ready_to_go = SDL_ShadowSurface; |
| 658 | SDL_ShadowSurface = NULL; |
| 659 | SDL_FreeSurface(ready_to_go); |
| 660 | } |
| 661 | if ( video->physpal ) { |
| 662 | SDL_free(video->physpal->colors); |
| 663 | SDL_free(video->physpal); |
| 664 | video->physpal = NULL; |
| 665 | } |
| 666 | if( video->gammacols) { |
| 667 | SDL_free(video->gammacols); |
| 668 | video->gammacols = NULL; |
| 669 | } |
| 670 | |
| 671 | /* Save the previous grab state and turn off grab for mode switch */ |
| 672 | saved_grab = SDL_WM_GrabInputOff(); |
| 673 | |
| 674 | /* Try to set the video mode, along with offset and clipping */ |
| 675 | prev_mode = SDL_VideoSurface; |
| 676 | SDL_LockCursor(); |
| 677 | SDL_VideoSurface = NULL; /* In case it's freed by driver */ |
| 678 | mode = video->SetVideoMode(this, prev_mode,video_w,video_h,video_bpp,flags); |
| 679 | if ( mode ) { /* Prevent resize events from mode change */ |
| 680 | /* But not on OS/2 */ |
| 681 | #ifndef __OS2__ |
| 682 | SDL_PrivateResize(mode->w, mode->h); |
| 683 | #endif |
| 684 | |
| 685 | /* Sam - If we asked for OpenGL mode, and didn't get it, fail */ |
| 686 | if ( is_opengl && !(mode->flags & SDL_OPENGL) ) { |
| 687 | mode = NULL; |
| 688 | SDL_SetError("OpenGL not available"); |
| 689 | } |
| 690 | } |
| 691 | /* |
| 692 | * rcg11292000 |
| 693 | * If you try to set an SDL_OPENGL surface, and fail to find a |
| 694 | * matching visual, then the next call to SDL_SetVideoMode() |
| 695 | * will segfault, since we no longer point to a dummy surface, |
| 696 | * but rather NULL. |
| 697 | * Sam 11/29/00 |
| 698 | * WARNING, we need to make sure that the previous mode hasn't |
| 699 | * already been freed by the video driver. What do we do in |
| 700 | * that case? Should we call SDL_VideoInit() again? |
| 701 | */ |
| 702 | SDL_VideoSurface = (mode != NULL) ? mode : prev_mode; |
| 703 | |
| 704 | if ( (mode != NULL) && (!is_opengl) ) { |
| 705 | /* Sanity check */ |
| 706 | if ( (mode->w < width) || (mode->h < height) ) { |
| 707 | SDL_SetError("Video mode smaller than requested"); |
| 708 | return(NULL); |
| 709 | } |
| 710 | |
| 711 | /* If we have a palettized surface, create a default palette */ |
| 712 | if ( mode->format->palette ) { |
| 713 | SDL_PixelFormat *vf = mode->format; |
| 714 | SDL_DitherColors(vf->palette->colors, vf->BitsPerPixel); |
| 715 | video->SetColors(this, 0, vf->palette->ncolors, |
| 716 | vf->palette->colors); |
| 717 | } |
| 718 | |
| 719 | /* Clear the surface to black */ |
| 720 | video->offset_x = 0; |
| 721 | video->offset_y = 0; |
| 722 | mode->offset = 0; |
| 723 | SDL_SetClipRect(mode, NULL); |
| 724 | SDL_ClearSurface(mode); |
| 725 | |
| 726 | /* Now adjust the offsets to match the desired mode */ |
| 727 | video->offset_x = (mode->w-width)/2; |
| 728 | video->offset_y = (mode->h-height)/2; |
| 729 | mode->offset = video->offset_y*mode->pitch + |
| 730 | video->offset_x*mode->format->BytesPerPixel; |
| 731 | #ifdef DEBUG_VIDEO |
| 732 | fprintf(stderr, |
| 733 | "Requested mode: %dx%dx%d, obtained mode %dx%dx%d (offset %d)\n", |
| 734 | width, height, bpp, |
| 735 | mode->w, mode->h, mode->format->BitsPerPixel, mode->offset); |
| 736 | #endif |
| 737 | mode->w = width; |
| 738 | mode->h = height; |
| 739 | SDL_SetClipRect(mode, NULL); |
| 740 | } |
| 741 | SDL_ResetCursor(); |
| 742 | SDL_UnlockCursor(); |
| 743 | |
| 744 | /* If we failed setting a video mode, return NULL... (Uh Oh!) */ |
| 745 | if ( mode == NULL ) { |
| 746 | return(NULL); |
| 747 | } |
| 748 | |
| 749 | /* If there is no window manager, set the SDL_NOFRAME flag */ |
| 750 | if ( ! video->info.wm_available ) { |
| 751 | mode->flags |= SDL_NOFRAME; |
| 752 | } |
| 753 | |
| 754 | /* Reset the mouse cursor and grab for new video mode */ |
| 755 | SDL_SetCursor(NULL); |
| 756 | if ( video->UpdateMouse ) { |
| 757 | video->UpdateMouse(this); |
| 758 | } |
| 759 | SDL_WM_GrabInput(saved_grab); |
| 760 | SDL_GetRelativeMouseState(NULL, NULL); /* Clear first large delta */ |
| 761 | |
| 762 | #if SDL_VIDEO_OPENGL |
| 763 | /* Load GL symbols (before MakeCurrent, where we need glGetString). */ |
| 764 | if ( flags & (SDL_OPENGL | SDL_OPENGLBLIT) ) { |
| 765 | |
| 766 | #if defined(__QNXNTO__) && (_NTO_VERSION < 630) |
| 767 | #define __SDL_NOGETPROCADDR__ |
| 768 | #elif defined(__MINT__) |
| 769 | #define __SDL_NOGETPROCADDR__ |
| 770 | #endif |
| 771 | #ifdef __SDL_NOGETPROCADDR__ |
| 772 | #define SDL_PROC(ret,func,params) video->func=func; |
| 773 | #else |
| 774 | #define SDL_PROC(ret,func,params) \ |
| 775 | do { \ |
| 776 | video->func = SDL_GL_GetProcAddress(#func); \ |
| 777 | if ( ! video->func ) { \ |
| 778 | SDL_SetError("Couldn't load GL function %s: %s\n", #func, SDL_GetError()); \ |
| 779 | return(NULL); \ |
| 780 | } \ |
| 781 | } while ( 0 ); |
| 782 | |
| 783 | #endif /* __SDL_NOGETPROCADDR__ */ |
| 784 | |
| 785 | #include "SDL_glfuncs.h" |
| 786 | #undef SDL_PROC |
| 787 | } |
| 788 | #endif /* SDL_VIDEO_OPENGL */ |
| 789 | |
| 790 | /* If we're running OpenGL, make the context current */ |
| 791 | if ( (video->screen->flags & SDL_OPENGL) && |
| 792 | video->GL_MakeCurrent ) { |
| 793 | if ( video->GL_MakeCurrent(this) < 0 ) { |
| 794 | return(NULL); |
| 795 | } |
| 796 | } |
| 797 | |
| 798 | /* Set up a fake SDL surface for OpenGL "blitting" */ |
| 799 | if ( (flags & SDL_OPENGLBLIT) == SDL_OPENGLBLIT ) { |
| 800 | /* Load GL functions for performing the texture updates */ |
| 801 | #if SDL_VIDEO_OPENGL |
| 802 | |
| 803 | /* Create a software surface for blitting */ |
| 804 | #ifdef GL_VERSION_1_2 |
| 805 | /* If the implementation either supports the packed pixels |
| 806 | extension, or implements the core OpenGL 1.2 API, it will |
| 807 | support the GL_UNSIGNED_SHORT_5_6_5 texture format. |
| 808 | */ |
| 809 | if ( (bpp == 16) && |
| 810 | (SDL_strstr((const char *)video->glGetString(GL_EXTENSIONS), "GL_EXT_packed_pixels") || |
| 811 | (SDL_atof((const char *)video->glGetString(GL_VERSION)) >= 1.2f)) |
| 812 | ) { |
| 813 | video->is_32bit = 0; |
| 814 | SDL_VideoSurface = SDL_CreateRGBSurface( |
| 815 | flags, |
| 816 | width, |
| 817 | height, |
| 818 | 16, |
| 819 | 31 << 11, |
| 820 | 63 << 5, |
| 821 | 31, |
| 822 | 0 |
| 823 | ); |
| 824 | } |
| 825 | else |
| 826 | #endif /* OpenGL 1.2 */ |
| 827 | { |
| 828 | video->is_32bit = 1; |
| 829 | SDL_VideoSurface = SDL_CreateRGBSurface( |
| 830 | flags, |
| 831 | width, |
| 832 | height, |
| 833 | 32, |
| 834 | #if SDL_BYTEORDER == SDL_LIL_ENDIAN |
| 835 | 0x000000FF, |
| 836 | 0x0000FF00, |
| 837 | 0x00FF0000, |
| 838 | 0xFF000000 |
| 839 | #else |
| 840 | 0xFF000000, |
| 841 | 0x00FF0000, |
| 842 | 0x0000FF00, |
| 843 | 0x000000FF |
| 844 | #endif |
| 845 | ); |
| 846 | } |
| 847 | if ( ! SDL_VideoSurface ) { |
| 848 | return(NULL); |
| 849 | } |
| 850 | SDL_VideoSurface->flags = mode->flags | SDL_OPENGLBLIT; |
| 851 | |
| 852 | /* Free the original video mode surface (is this safe?) */ |
| 853 | SDL_FreeSurface(mode); |
| 854 | |
| 855 | /* Set the surface completely opaque & white by default */ |
| 856 | SDL_memset( SDL_VideoSurface->pixels, 255, SDL_VideoSurface->h * SDL_VideoSurface->pitch ); |
| 857 | video->glGenTextures( 1, &video->texture ); |
| 858 | video->glBindTexture( GL_TEXTURE_2D, video->texture ); |
| 859 | video->glTexImage2D( |
| 860 | GL_TEXTURE_2D, |
| 861 | 0, |
| 862 | video->is_32bit ? GL_RGBA : GL_RGB, |
| 863 | 256, |
| 864 | 256, |
| 865 | 0, |
| 866 | video->is_32bit ? GL_RGBA : GL_RGB, |
| 867 | #ifdef GL_VERSION_1_2 |
| 868 | video->is_32bit ? GL_UNSIGNED_BYTE : GL_UNSIGNED_SHORT_5_6_5, |
| 869 | #else |
| 870 | GL_UNSIGNED_BYTE, |
| 871 | #endif |
| 872 | NULL); |
| 873 | |
| 874 | video->UpdateRects = SDL_GL_UpdateRectsLock; |
| 875 | #else |
| 876 | SDL_SetError("Somebody forgot to #define SDL_VIDEO_OPENGL"); |
| 877 | return(NULL); |
| 878 | #endif |
| 879 | } |
| 880 | |
| 881 | /* Create a shadow surface if necessary */ |
| 882 | /* There are three conditions under which we create a shadow surface: |
| 883 | 1. We need a particular bits-per-pixel that we didn't get. |
| 884 | 2. We need a hardware palette and didn't get one. |
| 885 | 3. We need a software surface and got a hardware surface. |
| 886 | */ |
| 887 | if ( !(SDL_VideoSurface->flags & SDL_OPENGL) && |
| 888 | ( |
| 889 | ( !(flags&SDL_ANYFORMAT) && |
| 890 | (SDL_VideoSurface->format->BitsPerPixel != bpp)) || |
| 891 | ( (flags&SDL_HWPALETTE) && |
| 892 | !(SDL_VideoSurface->flags&SDL_HWPALETTE)) || |
| 893 | /* If the surface is in hardware, video writes are visible |
| 894 | as soon as they are performed, so we need to buffer them |
| 895 | */ |
| 896 | ( ((flags&SDL_HWSURFACE) == SDL_SWSURFACE) && |
| 897 | (SDL_VideoSurface->flags&SDL_HWSURFACE)) || |
| 898 | ( (flags&SDL_DOUBLEBUF) && |
| 899 | (SDL_VideoSurface->flags&SDL_HWSURFACE) && |
| 900 | !(SDL_VideoSurface->flags&SDL_DOUBLEBUF)) |
| 901 | ) ) { |
| 902 | SDL_CreateShadowSurface(bpp); |
| 903 | if ( SDL_ShadowSurface == NULL ) { |
| 904 | SDL_SetError("Couldn't create shadow surface"); |
| 905 | return(NULL); |
| 906 | } |
| 907 | SDL_PublicSurface = SDL_ShadowSurface; |
| 908 | } else { |
| 909 | SDL_PublicSurface = SDL_VideoSurface; |
| 910 | } |
| 911 | video->info.vfmt = SDL_VideoSurface->format; |
| 912 | video->info.current_w = SDL_VideoSurface->w; |
| 913 | video->info.current_h = SDL_VideoSurface->h; |
| 914 | |
| 915 | /* We're done! */ |
| 916 | return(SDL_PublicSurface); |
| 917 | } |
| 918 | |
| 919 | /* |
| 920 | * Convert a surface into the video pixel format. |
| 921 | */ |
| 922 | SDL_Surface * SDL_DisplayFormat (SDL_Surface *surface) |
| 923 | { |
| 924 | Uint32 flags; |
| 925 | |
| 926 | if ( ! SDL_PublicSurface ) { |
| 927 | SDL_SetError("No video mode has been set"); |
| 928 | return(NULL); |
| 929 | } |
| 930 | /* Set the flags appropriate for copying to display surface */ |
| 931 | if (((SDL_PublicSurface->flags&SDL_HWSURFACE) == SDL_HWSURFACE) && current_video->info.blit_hw) |
| 932 | flags = SDL_HWSURFACE; |
| 933 | else |
| 934 | flags = SDL_SWSURFACE; |
| 935 | #ifdef AUTORLE_DISPLAYFORMAT |
| 936 | flags |= (surface->flags & (SDL_SRCCOLORKEY|SDL_SRCALPHA)); |
| 937 | flags |= SDL_RLEACCELOK; |
| 938 | #else |
| 939 | flags |= surface->flags & (SDL_SRCCOLORKEY|SDL_SRCALPHA|SDL_RLEACCELOK); |
| 940 | #endif |
| 941 | return(SDL_ConvertSurface(surface, SDL_PublicSurface->format, flags)); |
| 942 | } |
| 943 | |
| 944 | /* |
| 945 | * Convert a surface into a format that's suitable for blitting to |
| 946 | * the screen, but including an alpha channel. |
| 947 | */ |
| 948 | SDL_Surface *SDL_DisplayFormatAlpha(SDL_Surface *surface) |
| 949 | { |
| 950 | SDL_PixelFormat *vf; |
| 951 | SDL_PixelFormat *format; |
| 952 | SDL_Surface *converted; |
| 953 | Uint32 flags; |
| 954 | /* default to ARGB8888 */ |
| 955 | Uint32 amask = 0xff000000; |
| 956 | Uint32 rmask = 0x00ff0000; |
| 957 | Uint32 gmask = 0x0000ff00; |
| 958 | Uint32 bmask = 0x000000ff; |
| 959 | |
| 960 | if ( ! SDL_PublicSurface ) { |
| 961 | SDL_SetError("No video mode has been set"); |
| 962 | return(NULL); |
| 963 | } |
| 964 | vf = SDL_PublicSurface->format; |
| 965 | |
| 966 | switch(vf->BytesPerPixel) { |
| 967 | case 2: |
| 968 | /* For XGY5[56]5, use, AXGY8888, where {X, Y} = {R, B}. |
| 969 | For anything else (like ARGB4444) it doesn't matter |
| 970 | since we have no special code for it anyway */ |
| 971 | if ( (vf->Rmask == 0x1f) && |
| 972 | (vf->Bmask == 0xf800 || vf->Bmask == 0x7c00)) { |
| 973 | rmask = 0xff; |
| 974 | bmask = 0xff0000; |
| 975 | } |
| 976 | break; |
| 977 | |
| 978 | case 3: |
| 979 | case 4: |
| 980 | /* Keep the video format, as long as the high 8 bits are |
| 981 | unused or alpha */ |
| 982 | if ( (vf->Rmask == 0xff) && (vf->Bmask == 0xff0000) ) { |
| 983 | rmask = 0xff; |
| 984 | bmask = 0xff0000; |
| 985 | } |
| 986 | break; |
| 987 | |
| 988 | default: |
| 989 | /* We have no other optimised formats right now. When/if a new |
| 990 | optimised alpha format is written, add the converter here */ |
| 991 | break; |
| 992 | } |
| 993 | format = SDL_AllocFormat(32, rmask, gmask, bmask, amask); |
| 994 | flags = SDL_PublicSurface->flags & SDL_HWSURFACE; |
| 995 | flags |= surface->flags & (SDL_SRCALPHA | SDL_RLEACCELOK); |
| 996 | converted = SDL_ConvertSurface(surface, format, flags); |
| 997 | SDL_FreeFormat(format); |
| 998 | return(converted); |
| 999 | } |
| 1000 | |
| 1001 | /* |
| 1002 | * Update a specific portion of the physical screen |
| 1003 | */ |
| 1004 | void SDL_UpdateRect(SDL_Surface *screen, Sint32 x, Sint32 y, Uint32 w, Uint32 h) |
| 1005 | { |
| 1006 | if ( screen ) { |
| 1007 | SDL_Rect rect; |
| 1008 | |
| 1009 | /* Perform some checking */ |
| 1010 | if ( w == 0 ) |
| 1011 | w = screen->w; |
| 1012 | if ( h == 0 ) |
| 1013 | h = screen->h; |
| 1014 | if ( (int)(x+w) > screen->w ) |
| 1015 | return; |
| 1016 | if ( (int)(y+h) > screen->h ) |
| 1017 | return; |
| 1018 | |
| 1019 | /* Fill the rectangle */ |
| 1020 | rect.x = (Sint16)x; |
| 1021 | rect.y = (Sint16)y; |
| 1022 | rect.w = (Uint16)w; |
| 1023 | rect.h = (Uint16)h; |
| 1024 | SDL_UpdateRects(screen, 1, &rect); |
| 1025 | } |
| 1026 | } |
| 1027 | void SDL_UpdateRects (SDL_Surface *screen, int numrects, SDL_Rect *rects) |
| 1028 | { |
| 1029 | int i; |
| 1030 | SDL_VideoDevice *video = current_video; |
| 1031 | SDL_VideoDevice *this = current_video; |
| 1032 | |
| 1033 | if ( (screen->flags & (SDL_OPENGL | SDL_OPENGLBLIT)) == SDL_OPENGL ) { |
| 1034 | SDL_SetError("OpenGL active, use SDL_GL_SwapBuffers()"); |
| 1035 | return; |
| 1036 | } |
| 1037 | if ( screen == SDL_ShadowSurface ) { |
| 1038 | /* Blit the shadow surface using saved mapping */ |
| 1039 | SDL_Palette *pal = screen->format->palette; |
| 1040 | SDL_Color *saved_colors = NULL; |
| 1041 | if ( pal && !(SDL_VideoSurface->flags & SDL_HWPALETTE) ) { |
| 1042 | /* simulated 8bpp, use correct physical palette */ |
| 1043 | saved_colors = pal->colors; |
| 1044 | if ( video->gammacols ) { |
| 1045 | /* gamma-corrected palette */ |
| 1046 | pal->colors = video->gammacols; |
| 1047 | } else if ( video->physpal ) { |
| 1048 | /* physical palette different from logical */ |
| 1049 | pal->colors = video->physpal->colors; |
| 1050 | } |
| 1051 | } |
| 1052 | if ( SHOULD_DRAWCURSOR(SDL_cursorstate) ) { |
| 1053 | SDL_LockCursor(); |
| 1054 | SDL_DrawCursor(SDL_ShadowSurface); |
| 1055 | for ( i=0; i<numrects; ++i ) { |
| 1056 | SDL_LowerBlit(SDL_ShadowSurface, &rects[i], |
| 1057 | SDL_VideoSurface, &rects[i]); |
| 1058 | } |
| 1059 | SDL_EraseCursor(SDL_ShadowSurface); |
| 1060 | SDL_UnlockCursor(); |
| 1061 | } else { |
| 1062 | for ( i=0; i<numrects; ++i ) { |
| 1063 | SDL_LowerBlit(SDL_ShadowSurface, &rects[i], |
| 1064 | SDL_VideoSurface, &rects[i]); |
| 1065 | } |
| 1066 | } |
| 1067 | if ( saved_colors ) { |
| 1068 | pal->colors = saved_colors; |
| 1069 | } |
| 1070 | |
| 1071 | /* Fall through to video surface update */ |
| 1072 | screen = SDL_VideoSurface; |
| 1073 | } |
| 1074 | if ( screen == SDL_VideoSurface ) { |
| 1075 | /* Update the video surface */ |
| 1076 | if ( screen->offset ) { |
| 1077 | for ( i=0; i<numrects; ++i ) { |
| 1078 | rects[i].x += video->offset_x; |
| 1079 | rects[i].y += video->offset_y; |
| 1080 | } |
| 1081 | video->UpdateRects(this, numrects, rects); |
| 1082 | for ( i=0; i<numrects; ++i ) { |
| 1083 | rects[i].x -= video->offset_x; |
| 1084 | rects[i].y -= video->offset_y; |
| 1085 | } |
| 1086 | } else { |
| 1087 | video->UpdateRects(this, numrects, rects); |
| 1088 | } |
| 1089 | } |
| 1090 | } |
| 1091 | |
| 1092 | /* |
| 1093 | * Performs hardware double buffering, if possible, or a full update if not. |
| 1094 | */ |
| 1095 | int SDL_Flip(SDL_Surface *screen) |
| 1096 | { |
| 1097 | SDL_VideoDevice *video = current_video; |
| 1098 | /* Copy the shadow surface to the video surface */ |
| 1099 | if ( screen == SDL_ShadowSurface ) { |
| 1100 | SDL_Rect rect; |
| 1101 | SDL_Palette *pal = screen->format->palette; |
| 1102 | SDL_Color *saved_colors = NULL; |
| 1103 | if ( pal && !(SDL_VideoSurface->flags & SDL_HWPALETTE) ) { |
| 1104 | /* simulated 8bpp, use correct physical palette */ |
| 1105 | saved_colors = pal->colors; |
| 1106 | if ( video->gammacols ) { |
| 1107 | /* gamma-corrected palette */ |
| 1108 | pal->colors = video->gammacols; |
| 1109 | } else if ( video->physpal ) { |
| 1110 | /* physical palette different from logical */ |
| 1111 | pal->colors = video->physpal->colors; |
| 1112 | } |
| 1113 | } |
| 1114 | |
| 1115 | rect.x = 0; |
| 1116 | rect.y = 0; |
| 1117 | rect.w = screen->w; |
| 1118 | rect.h = screen->h; |
| 1119 | if ( SHOULD_DRAWCURSOR(SDL_cursorstate) ) { |
| 1120 | SDL_LockCursor(); |
| 1121 | SDL_DrawCursor(SDL_ShadowSurface); |
| 1122 | SDL_LowerBlit(SDL_ShadowSurface, &rect, |
| 1123 | SDL_VideoSurface, &rect); |
| 1124 | SDL_EraseCursor(SDL_ShadowSurface); |
| 1125 | SDL_UnlockCursor(); |
| 1126 | } else { |
| 1127 | SDL_LowerBlit(SDL_ShadowSurface, &rect, |
| 1128 | SDL_VideoSurface, &rect); |
| 1129 | } |
| 1130 | if ( saved_colors ) { |
| 1131 | pal->colors = saved_colors; |
| 1132 | } |
| 1133 | |
| 1134 | /* Fall through to video surface update */ |
| 1135 | screen = SDL_VideoSurface; |
| 1136 | } |
| 1137 | if ( (screen->flags & SDL_DOUBLEBUF) == SDL_DOUBLEBUF ) { |
| 1138 | SDL_VideoDevice *this = current_video; |
| 1139 | return(video->FlipHWSurface(this, SDL_VideoSurface)); |
| 1140 | } else { |
| 1141 | SDL_UpdateRect(screen, 0, 0, 0, 0); |
| 1142 | } |
| 1143 | return(0); |
| 1144 | } |
| 1145 | |
| 1146 | static void SetPalette_logical(SDL_Surface *screen, SDL_Color *colors, |
| 1147 | int firstcolor, int ncolors) |
| 1148 | { |
| 1149 | SDL_Palette *pal = screen->format->palette; |
| 1150 | SDL_Palette *vidpal; |
| 1151 | |
| 1152 | if ( colors != (pal->colors + firstcolor) ) { |
| 1153 | SDL_memcpy(pal->colors + firstcolor, colors, |
| 1154 | ncolors * sizeof(*colors)); |
| 1155 | } |
| 1156 | |
| 1157 | if ( current_video && SDL_VideoSurface ) { |
| 1158 | vidpal = SDL_VideoSurface->format->palette; |
| 1159 | if ( (screen == SDL_ShadowSurface) && vidpal ) { |
| 1160 | /* |
| 1161 | * This is a shadow surface, and the physical |
| 1162 | * framebuffer is also indexed. Propagate the |
| 1163 | * changes to its logical palette so that |
| 1164 | * updates are always identity blits |
| 1165 | */ |
| 1166 | SDL_memcpy(vidpal->colors + firstcolor, colors, |
| 1167 | ncolors * sizeof(*colors)); |
| 1168 | } |
| 1169 | } |
| 1170 | SDL_FormatChanged(screen); |
| 1171 | } |
| 1172 | |
| 1173 | static int SetPalette_physical(SDL_Surface *screen, |
| 1174 | SDL_Color *colors, int firstcolor, int ncolors) |
| 1175 | { |
| 1176 | SDL_VideoDevice *video = current_video; |
| 1177 | int gotall = 1; |
| 1178 | |
| 1179 | if ( video->physpal ) { |
| 1180 | /* We need to copy the new colors, since we haven't |
| 1181 | * already done the copy in the logical set above. |
| 1182 | */ |
| 1183 | SDL_memcpy(video->physpal->colors + firstcolor, |
| 1184 | colors, ncolors * sizeof(*colors)); |
| 1185 | } |
| 1186 | if ( screen == SDL_ShadowSurface ) { |
| 1187 | if ( SDL_VideoSurface->flags & SDL_HWPALETTE ) { |
| 1188 | /* |
| 1189 | * The real screen is also indexed - set its physical |
| 1190 | * palette. The physical palette does not include the |
| 1191 | * gamma modification, we apply it directly instead, |
| 1192 | * but this only happens if we have hardware palette. |
| 1193 | */ |
| 1194 | screen = SDL_VideoSurface; |
| 1195 | } else { |
| 1196 | /* |
| 1197 | * The video surface is not indexed - invalidate any |
| 1198 | * active shadow-to-video blit mappings. |
| 1199 | */ |
| 1200 | if ( screen->map->dst == SDL_VideoSurface ) { |
| 1201 | SDL_InvalidateMap(screen->map); |
| 1202 | } |
| 1203 | if ( video->gamma ) { |
| 1204 | if( ! video->gammacols ) { |
| 1205 | SDL_Palette *pp = video->physpal; |
| 1206 | if(!pp) |
| 1207 | pp = screen->format->palette; |
| 1208 | video->gammacols = SDL_malloc(pp->ncolors |
| 1209 | * sizeof(SDL_Color)); |
| 1210 | SDL_ApplyGamma(video->gamma, |
| 1211 | pp->colors, |
| 1212 | video->gammacols, |
| 1213 | pp->ncolors); |
| 1214 | } else { |
| 1215 | SDL_ApplyGamma(video->gamma, colors, |
| 1216 | video->gammacols |
| 1217 | + firstcolor, |
| 1218 | ncolors); |
| 1219 | } |
| 1220 | } |
| 1221 | SDL_UpdateRect(screen, 0, 0, 0, 0); |
| 1222 | } |
| 1223 | } |
| 1224 | |
| 1225 | if ( screen == SDL_VideoSurface ) { |
| 1226 | SDL_Color gcolors[256]; |
| 1227 | |
| 1228 | if ( video->gamma ) { |
| 1229 | SDL_ApplyGamma(video->gamma, colors, gcolors, ncolors); |
| 1230 | colors = gcolors; |
| 1231 | } |
| 1232 | gotall = video->SetColors(video, firstcolor, ncolors, colors); |
| 1233 | if ( ! gotall ) { |
| 1234 | /* The video flags shouldn't have SDL_HWPALETTE, and |
| 1235 | the video driver is responsible for copying back the |
| 1236 | correct colors into the video surface palette. |
| 1237 | */ |
| 1238 | ; |
| 1239 | } |
| 1240 | SDL_CursorPaletteChanged(); |
| 1241 | } |
| 1242 | return gotall; |
| 1243 | } |
| 1244 | |
| 1245 | /* |
| 1246 | * Set the physical and/or logical colormap of a surface: |
| 1247 | * Only the screen has a physical colormap. It determines what is actually |
| 1248 | * sent to the display. |
| 1249 | * The logical colormap is used to map blits to/from the surface. |
| 1250 | * 'which' is one or both of SDL_LOGPAL, SDL_PHYSPAL |
| 1251 | * |
| 1252 | * Return nonzero if all colours were set as requested, or 0 otherwise. |
| 1253 | */ |
| 1254 | int SDL_SetPalette(SDL_Surface *screen, int which, |
| 1255 | SDL_Color *colors, int firstcolor, int ncolors) |
| 1256 | { |
| 1257 | SDL_Palette *pal; |
| 1258 | int gotall; |
| 1259 | int palsize; |
| 1260 | |
| 1261 | if ( !screen ) { |
| 1262 | return 0; |
| 1263 | } |
| 1264 | if ( !current_video || screen != SDL_PublicSurface ) { |
| 1265 | /* only screens have physical palettes */ |
| 1266 | which &= ~SDL_PHYSPAL; |
| 1267 | } else if ( (screen->flags & SDL_HWPALETTE) != SDL_HWPALETTE ) { |
| 1268 | /* hardware palettes required for split colormaps */ |
| 1269 | which |= SDL_PHYSPAL | SDL_LOGPAL; |
| 1270 | } |
| 1271 | |
| 1272 | /* Verify the parameters */ |
| 1273 | pal = screen->format->palette; |
| 1274 | if( !pal ) { |
| 1275 | return 0; /* not a palettized surface */ |
| 1276 | } |
| 1277 | gotall = 1; |
| 1278 | palsize = 1 << screen->format->BitsPerPixel; |
| 1279 | if ( ncolors > (palsize - firstcolor) ) { |
| 1280 | ncolors = (palsize - firstcolor); |
| 1281 | gotall = 0; |
| 1282 | } |
| 1283 | |
| 1284 | if ( which & SDL_LOGPAL ) { |
| 1285 | /* |
| 1286 | * Logical palette change: The actual screen isn't affected, |
| 1287 | * but the internal colormap is altered so that the |
| 1288 | * interpretation of the pixel values (for blits etc) is |
| 1289 | * changed. |
| 1290 | */ |
| 1291 | SetPalette_logical(screen, colors, firstcolor, ncolors); |
| 1292 | } |
| 1293 | if ( which & SDL_PHYSPAL ) { |
| 1294 | SDL_VideoDevice *video = current_video; |
| 1295 | /* |
| 1296 | * Physical palette change: This doesn't affect the |
| 1297 | * program's idea of what the screen looks like, but changes |
| 1298 | * its actual appearance. |
| 1299 | */ |
| 1300 | if ( !video->physpal && !(which & SDL_LOGPAL) ) { |
| 1301 | /* Lazy physical palette allocation */ |
| 1302 | int size; |
| 1303 | SDL_Palette *pp = SDL_malloc(sizeof(*pp)); |
| 1304 | if ( !pp ) { |
| 1305 | return 0; |
| 1306 | } |
| 1307 | video->physpal = pp; |
| 1308 | pp->ncolors = pal->ncolors; |
| 1309 | size = pp->ncolors * sizeof(SDL_Color); |
| 1310 | pp->colors = SDL_malloc(size); |
| 1311 | if ( !pp->colors ) { |
| 1312 | return 0; |
| 1313 | } |
| 1314 | SDL_memcpy(pp->colors, pal->colors, size); |
| 1315 | } |
| 1316 | if ( ! SetPalette_physical(screen, |
| 1317 | colors, firstcolor, ncolors) ) { |
| 1318 | gotall = 0; |
| 1319 | } |
| 1320 | } |
| 1321 | return gotall; |
| 1322 | } |
| 1323 | |
| 1324 | int SDL_SetColors(SDL_Surface *screen, SDL_Color *colors, int firstcolor, |
| 1325 | int ncolors) |
| 1326 | { |
| 1327 | return SDL_SetPalette(screen, SDL_LOGPAL | SDL_PHYSPAL, |
| 1328 | colors, firstcolor, ncolors); |
| 1329 | } |
| 1330 | |
| 1331 | /* |
| 1332 | * Clean up the video subsystem |
| 1333 | */ |
| 1334 | void SDL_VideoQuit (void) |
| 1335 | { |
| 1336 | SDL_Surface *ready_to_go; |
| 1337 | |
| 1338 | if ( current_video ) { |
| 1339 | SDL_VideoDevice *video = current_video; |
| 1340 | SDL_VideoDevice *this = current_video; |
| 1341 | |
| 1342 | /* Halt event processing before doing anything else */ |
| 1343 | SDL_StopEventLoop(); |
| 1344 | |
| 1345 | /* Clean up allocated window manager items */ |
| 1346 | if ( SDL_PublicSurface ) { |
| 1347 | SDL_PublicSurface = NULL; |
| 1348 | } |
| 1349 | SDL_CursorQuit(); |
| 1350 | |
| 1351 | /* Just in case... */ |
| 1352 | SDL_WM_GrabInputOff(); |
| 1353 | |
| 1354 | /* Clean up the system video */ |
| 1355 | video->VideoQuit(this); |
| 1356 | |
| 1357 | /* Free any lingering surfaces */ |
| 1358 | ready_to_go = SDL_ShadowSurface; |
| 1359 | SDL_ShadowSurface = NULL; |
| 1360 | SDL_FreeSurface(ready_to_go); |
| 1361 | if ( SDL_VideoSurface != NULL ) { |
| 1362 | ready_to_go = SDL_VideoSurface; |
| 1363 | SDL_VideoSurface = NULL; |
| 1364 | SDL_FreeSurface(ready_to_go); |
| 1365 | } |
| 1366 | SDL_PublicSurface = NULL; |
| 1367 | |
| 1368 | /* Clean up miscellaneous memory */ |
| 1369 | if ( video->physpal ) { |
| 1370 | SDL_free(video->physpal->colors); |
| 1371 | SDL_free(video->physpal); |
| 1372 | video->physpal = NULL; |
| 1373 | } |
| 1374 | if ( video->gammacols ) { |
| 1375 | SDL_free(video->gammacols); |
| 1376 | video->gammacols = NULL; |
| 1377 | } |
| 1378 | if ( video->gamma ) { |
| 1379 | SDL_free(video->gamma); |
| 1380 | video->gamma = NULL; |
| 1381 | } |
| 1382 | if ( video->wm_title != NULL ) { |
| 1383 | SDL_free(video->wm_title); |
| 1384 | video->wm_title = NULL; |
| 1385 | } |
| 1386 | if ( video->wm_icon != NULL ) { |
| 1387 | SDL_free(video->wm_icon); |
| 1388 | video->wm_icon = NULL; |
| 1389 | } |
| 1390 | |
| 1391 | /* Finish cleaning up video subsystem */ |
| 1392 | video->free(this); |
| 1393 | current_video = NULL; |
| 1394 | } |
| 1395 | return; |
| 1396 | } |
| 1397 | |
| 1398 | /* Load the GL driver library */ |
| 1399 | int SDL_GL_LoadLibrary(const char *path) |
| 1400 | { |
| 1401 | SDL_VideoDevice *video = current_video; |
| 1402 | SDL_VideoDevice *this = current_video; |
| 1403 | int retval; |
| 1404 | |
| 1405 | retval = -1; |
| 1406 | if ( video == NULL ) { |
| 1407 | SDL_SetError("Video subsystem has not been initialized"); |
| 1408 | } else { |
| 1409 | if ( video->GL_LoadLibrary ) { |
| 1410 | retval = video->GL_LoadLibrary(this, path); |
| 1411 | } else { |
| 1412 | SDL_SetError("No dynamic GL support in video driver"); |
| 1413 | } |
| 1414 | } |
| 1415 | return(retval); |
| 1416 | } |
| 1417 | |
| 1418 | void *SDL_GL_GetProcAddress(const char* proc) |
| 1419 | { |
| 1420 | SDL_VideoDevice *video = current_video; |
| 1421 | SDL_VideoDevice *this = current_video; |
| 1422 | void *func; |
| 1423 | |
| 1424 | func = NULL; |
| 1425 | if ( video->GL_GetProcAddress ) { |
| 1426 | if ( video->gl_config.driver_loaded ) { |
| 1427 | func = video->GL_GetProcAddress(this, proc); |
| 1428 | } else { |
| 1429 | SDL_SetError("No GL driver has been loaded"); |
| 1430 | } |
| 1431 | } else { |
| 1432 | SDL_SetError("No dynamic GL support in video driver"); |
| 1433 | } |
| 1434 | return func; |
| 1435 | } |
| 1436 | |
| 1437 | /* Set the specified GL attribute for setting up a GL video mode */ |
| 1438 | int SDL_GL_SetAttribute( SDL_GLattr attr, int value ) |
| 1439 | { |
| 1440 | int retval; |
| 1441 | SDL_VideoDevice *video = current_video; |
| 1442 | |
| 1443 | retval = 0; |
| 1444 | switch (attr) { |
| 1445 | case SDL_GL_RED_SIZE: |
| 1446 | video->gl_config.red_size = value; |
| 1447 | break; |
| 1448 | case SDL_GL_GREEN_SIZE: |
| 1449 | video->gl_config.green_size = value; |
| 1450 | break; |
| 1451 | case SDL_GL_BLUE_SIZE: |
| 1452 | video->gl_config.blue_size = value; |
| 1453 | break; |
| 1454 | case SDL_GL_ALPHA_SIZE: |
| 1455 | video->gl_config.alpha_size = value; |
| 1456 | break; |
| 1457 | case SDL_GL_DOUBLEBUFFER: |
| 1458 | video->gl_config.double_buffer = value; |
| 1459 | break; |
| 1460 | case SDL_GL_BUFFER_SIZE: |
| 1461 | video->gl_config.buffer_size = value; |
| 1462 | break; |
| 1463 | case SDL_GL_DEPTH_SIZE: |
| 1464 | video->gl_config.depth_size = value; |
| 1465 | break; |
| 1466 | case SDL_GL_STENCIL_SIZE: |
| 1467 | video->gl_config.stencil_size = value; |
| 1468 | break; |
| 1469 | case SDL_GL_ACCUM_RED_SIZE: |
| 1470 | video->gl_config.accum_red_size = value; |
| 1471 | break; |
| 1472 | case SDL_GL_ACCUM_GREEN_SIZE: |
| 1473 | video->gl_config.accum_green_size = value; |
| 1474 | break; |
| 1475 | case SDL_GL_ACCUM_BLUE_SIZE: |
| 1476 | video->gl_config.accum_blue_size = value; |
| 1477 | break; |
| 1478 | case SDL_GL_ACCUM_ALPHA_SIZE: |
| 1479 | video->gl_config.accum_alpha_size = value; |
| 1480 | break; |
| 1481 | case SDL_GL_STEREO: |
| 1482 | video->gl_config.stereo = value; |
| 1483 | break; |
| 1484 | case SDL_GL_MULTISAMPLEBUFFERS: |
| 1485 | video->gl_config.multisamplebuffers = value; |
| 1486 | break; |
| 1487 | case SDL_GL_MULTISAMPLESAMPLES: |
| 1488 | video->gl_config.multisamplesamples = value; |
| 1489 | break; |
| 1490 | case SDL_GL_ACCELERATED_VISUAL: |
| 1491 | video->gl_config.accelerated = value; |
| 1492 | break; |
| 1493 | case SDL_GL_SWAP_CONTROL: |
| 1494 | video->gl_config.swap_control = value; |
| 1495 | break; |
| 1496 | default: |
| 1497 | SDL_SetError("Unknown OpenGL attribute"); |
| 1498 | retval = -1; |
| 1499 | break; |
| 1500 | } |
| 1501 | return(retval); |
| 1502 | } |
| 1503 | |
| 1504 | /* Retrieve an attribute value from the windowing system. */ |
| 1505 | int SDL_GL_GetAttribute(SDL_GLattr attr, int* value) |
| 1506 | { |
| 1507 | int retval = -1; |
| 1508 | SDL_VideoDevice* video = current_video; |
| 1509 | SDL_VideoDevice* this = current_video; |
| 1510 | |
| 1511 | if ( video->GL_GetAttribute ) { |
| 1512 | retval = this->GL_GetAttribute(this, attr, value); |
| 1513 | } else { |
| 1514 | *value = 0; |
| 1515 | SDL_SetError("GL_GetAttribute not supported"); |
| 1516 | } |
| 1517 | return retval; |
| 1518 | } |
| 1519 | |
| 1520 | /* Perform a GL buffer swap on the current GL context */ |
| 1521 | void SDL_GL_SwapBuffers(void) |
| 1522 | { |
| 1523 | SDL_VideoDevice *video = current_video; |
| 1524 | SDL_VideoDevice *this = current_video; |
| 1525 | |
| 1526 | if ( video->screen->flags & SDL_OPENGL ) { |
| 1527 | video->GL_SwapBuffers(this); |
| 1528 | } else { |
| 1529 | SDL_SetError("OpenGL video mode has not been set"); |
| 1530 | } |
| 1531 | } |
| 1532 | |
| 1533 | /* Update rects with locking */ |
| 1534 | void SDL_GL_UpdateRectsLock(SDL_VideoDevice* this, int numrects, SDL_Rect *rects) |
| 1535 | { |
| 1536 | SDL_GL_Lock(); |
| 1537 | SDL_GL_UpdateRects(numrects, rects); |
| 1538 | SDL_GL_Unlock(); |
| 1539 | } |
| 1540 | |
| 1541 | /* Update rects without state setting and changing (the caller is responsible for it) */ |
| 1542 | void SDL_GL_UpdateRects(int numrects, SDL_Rect *rects) |
| 1543 | { |
| 1544 | #if SDL_VIDEO_OPENGL |
| 1545 | SDL_VideoDevice *this = current_video; |
| 1546 | SDL_Rect update, tmp; |
| 1547 | int x, y, i; |
| 1548 | |
| 1549 | for ( i = 0; i < numrects; i++ ) |
| 1550 | { |
| 1551 | tmp.y = rects[i].y; |
| 1552 | tmp.h = rects[i].h; |
| 1553 | for ( y = 0; y <= rects[i].h / 256; y++ ) |
| 1554 | { |
| 1555 | tmp.x = rects[i].x; |
| 1556 | tmp.w = rects[i].w; |
| 1557 | for ( x = 0; x <= rects[i].w / 256; x++ ) |
| 1558 | { |
| 1559 | update.x = tmp.x; |
| 1560 | update.y = tmp.y; |
| 1561 | update.w = tmp.w; |
| 1562 | update.h = tmp.h; |
| 1563 | |
| 1564 | if ( update.w > 256 ) |
| 1565 | update.w = 256; |
| 1566 | |
| 1567 | if ( update.h > 256 ) |
| 1568 | update.h = 256; |
| 1569 | |
| 1570 | this->glFlush(); |
| 1571 | this->glTexSubImage2D( |
| 1572 | GL_TEXTURE_2D, |
| 1573 | 0, |
| 1574 | 0, |
| 1575 | 0, |
| 1576 | update.w, |
| 1577 | update.h, |
| 1578 | this->is_32bit? GL_RGBA : GL_RGB, |
| 1579 | #ifdef GL_VERSION_1_2 |
| 1580 | this->is_32bit ? GL_UNSIGNED_BYTE : GL_UNSIGNED_SHORT_5_6_5, |
| 1581 | #else |
| 1582 | GL_UNSIGNED_BYTE, |
| 1583 | #endif |
| 1584 | (Uint8 *)this->screen->pixels + |
| 1585 | this->screen->format->BytesPerPixel * update.x + |
| 1586 | update.y * this->screen->pitch ); |
| 1587 | |
| 1588 | this->glFlush(); |
| 1589 | /* |
| 1590 | * Note the parens around the function name: |
| 1591 | * This is because some OpenGL implementations define glTexCoord etc |
| 1592 | * as macros, and we don't want them expanded here. |
| 1593 | */ |
| 1594 | this->glBegin(GL_TRIANGLE_STRIP); |
| 1595 | (this->glTexCoord2f)( 0.0, 0.0 ); |
| 1596 | (this->glVertex2i)( update.x, update.y ); |
| 1597 | (this->glTexCoord2f)( (float)(update.w / 256.0), 0.0 ); |
| 1598 | (this->glVertex2i)( update.x + update.w, update.y ); |
| 1599 | (this->glTexCoord2f)( 0.0, (float)(update.h / 256.0) ); |
| 1600 | (this->glVertex2i)( update.x, update.y + update.h ); |
| 1601 | (this->glTexCoord2f)( (float)(update.w / 256.0), (float)(update.h / 256.0) ); |
| 1602 | (this->glVertex2i)( update.x + update.w , update.y + update.h ); |
| 1603 | this->glEnd(); |
| 1604 | |
| 1605 | tmp.x += 256; |
| 1606 | tmp.w -= 256; |
| 1607 | } |
| 1608 | tmp.y += 256; |
| 1609 | tmp.h -= 256; |
| 1610 | } |
| 1611 | } |
| 1612 | #endif |
| 1613 | } |
| 1614 | |
| 1615 | /* Lock == save current state */ |
| 1616 | void SDL_GL_Lock() |
| 1617 | { |
| 1618 | #if SDL_VIDEO_OPENGL |
| 1619 | lock_count--; |
| 1620 | if (lock_count==-1) |
| 1621 | { |
| 1622 | SDL_VideoDevice *this = current_video; |
| 1623 | |
| 1624 | this->glPushAttrib( GL_ALL_ATTRIB_BITS ); /* TODO: narrow range of what is saved */ |
| 1625 | #ifdef GL_CLIENT_PIXEL_STORE_BIT |
| 1626 | this->glPushClientAttrib( GL_CLIENT_PIXEL_STORE_BIT ); |
| 1627 | #endif |
| 1628 | |
| 1629 | this->glEnable(GL_TEXTURE_2D); |
| 1630 | this->glEnable(GL_BLEND); |
| 1631 | this->glDisable(GL_FOG); |
| 1632 | this->glDisable(GL_ALPHA_TEST); |
| 1633 | this->glDisable(GL_DEPTH_TEST); |
| 1634 | this->glDisable(GL_SCISSOR_TEST); |
| 1635 | this->glDisable(GL_STENCIL_TEST); |
| 1636 | this->glDisable(GL_CULL_FACE); |
| 1637 | |
| 1638 | this->glBindTexture( GL_TEXTURE_2D, this->texture ); |
| 1639 | this->glTexEnvf( GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE ); |
| 1640 | this->glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST ); |
| 1641 | this->glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST ); |
| 1642 | this->glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT ); |
| 1643 | this->glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT ); |
| 1644 | |
| 1645 | this->glPixelStorei( GL_UNPACK_ROW_LENGTH, this->screen->pitch / this->screen->format->BytesPerPixel ); |
| 1646 | this->glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA); |
| 1647 | (this->glColor4f)(1.0, 1.0, 1.0, 1.0); /* Solaris workaround */ |
| 1648 | |
| 1649 | this->glViewport(0, 0, this->screen->w, this->screen->h); |
| 1650 | this->glMatrixMode(GL_PROJECTION); |
| 1651 | this->glPushMatrix(); |
| 1652 | this->glLoadIdentity(); |
| 1653 | |
| 1654 | this->glOrtho(0.0, (GLdouble) this->screen->w, (GLdouble) this->screen->h, 0.0, 0.0, 1.0); |
| 1655 | |
| 1656 | this->glMatrixMode(GL_MODELVIEW); |
| 1657 | this->glPushMatrix(); |
| 1658 | this->glLoadIdentity(); |
| 1659 | } |
| 1660 | #endif |
| 1661 | } |
| 1662 | |
| 1663 | /* Unlock == restore saved state */ |
| 1664 | void SDL_GL_Unlock() |
| 1665 | { |
| 1666 | #if SDL_VIDEO_OPENGL |
| 1667 | lock_count++; |
| 1668 | if (lock_count==0) |
| 1669 | { |
| 1670 | SDL_VideoDevice *this = current_video; |
| 1671 | |
| 1672 | this->glPopMatrix(); |
| 1673 | this->glMatrixMode(GL_PROJECTION); |
| 1674 | this->glPopMatrix(); |
| 1675 | |
| 1676 | this->glPopClientAttrib(); |
| 1677 | this->glPopAttrib(); |
| 1678 | } |
| 1679 | #endif |
| 1680 | } |
| 1681 | |
| 1682 | /* |
| 1683 | * Sets/Gets the title and icon text of the display window, if any. |
| 1684 | */ |
| 1685 | void SDL_WM_SetCaption (const char *title, const char *icon) |
| 1686 | { |
| 1687 | SDL_VideoDevice *video = current_video; |
| 1688 | SDL_VideoDevice *this = current_video; |
| 1689 | |
| 1690 | if ( video ) { |
| 1691 | if ( title ) { |
| 1692 | if ( video->wm_title ) { |
| 1693 | SDL_free(video->wm_title); |
| 1694 | } |
| 1695 | video->wm_title = SDL_strdup(title); |
| 1696 | } |
| 1697 | if ( icon ) { |
| 1698 | if ( video->wm_icon ) { |
| 1699 | SDL_free(video->wm_icon); |
| 1700 | } |
| 1701 | video->wm_icon = SDL_strdup(icon); |
| 1702 | } |
| 1703 | if ( (title || icon) && (video->SetCaption != NULL) ) { |
| 1704 | video->SetCaption(this, video->wm_title,video->wm_icon); |
| 1705 | } |
| 1706 | } |
| 1707 | } |
| 1708 | void SDL_WM_GetCaption (char **title, char **icon) |
| 1709 | { |
| 1710 | SDL_VideoDevice *video = current_video; |
| 1711 | |
| 1712 | if ( video ) { |
| 1713 | if ( title ) { |
| 1714 | *title = video->wm_title; |
| 1715 | } |
| 1716 | if ( icon ) { |
| 1717 | *icon = video->wm_icon; |
| 1718 | } |
| 1719 | } |
| 1720 | } |
| 1721 | |
| 1722 | /* Utility function used by SDL_WM_SetIcon(); |
| 1723 | * flags & 1 for color key, flags & 2 for alpha channel. */ |
| 1724 | static void CreateMaskFromColorKeyOrAlpha(SDL_Surface *icon, Uint8 *mask, int flags) |
| 1725 | { |
| 1726 | int x, y; |
| 1727 | Uint32 colorkey; |
| 1728 | #define SET_MASKBIT(icon, x, y, mask) \ |
| 1729 | mask[(y*((icon->w+7)/8))+(x/8)] &= ~(0x01<<(7-(x%8))) |
| 1730 | |
| 1731 | colorkey = icon->format->colorkey; |
| 1732 | switch (icon->format->BytesPerPixel) { |
| 1733 | case 1: { Uint8 *pixels; |
| 1734 | for ( y=0; y<icon->h; ++y ) { |
| 1735 | pixels = (Uint8 *)icon->pixels + y*icon->pitch; |
| 1736 | for ( x=0; x<icon->w; ++x ) { |
| 1737 | if ( *pixels++ == colorkey ) { |
| 1738 | SET_MASKBIT(icon, x, y, mask); |
| 1739 | } |
| 1740 | } |
| 1741 | } |
| 1742 | } |
| 1743 | break; |
| 1744 | |
| 1745 | case 2: { Uint16 *pixels; |
| 1746 | for ( y=0; y<icon->h; ++y ) { |
| 1747 | pixels = (Uint16 *)icon->pixels + |
| 1748 | y*icon->pitch/2; |
| 1749 | for ( x=0; x<icon->w; ++x ) { |
| 1750 | if ( (flags & 1) && *pixels == colorkey ) { |
| 1751 | SET_MASKBIT(icon, x, y, mask); |
| 1752 | } else if((flags & 2) && (*pixels & icon->format->Amask) == 0) { |
| 1753 | SET_MASKBIT(icon, x, y, mask); |
| 1754 | } |
| 1755 | pixels++; |
| 1756 | } |
| 1757 | } |
| 1758 | } |
| 1759 | break; |
| 1760 | |
| 1761 | case 4: { Uint32 *pixels; |
| 1762 | for ( y=0; y<icon->h; ++y ) { |
| 1763 | pixels = (Uint32 *)icon->pixels + |
| 1764 | y*icon->pitch/4; |
| 1765 | for ( x=0; x<icon->w; ++x ) { |
| 1766 | if ( (flags & 1) && *pixels == colorkey ) { |
| 1767 | SET_MASKBIT(icon, x, y, mask); |
| 1768 | } else if((flags & 2) && (*pixels & icon->format->Amask) == 0) { |
| 1769 | SET_MASKBIT(icon, x, y, mask); |
| 1770 | } |
| 1771 | pixels++; |
| 1772 | } |
| 1773 | } |
| 1774 | } |
| 1775 | break; |
| 1776 | } |
| 1777 | } |
| 1778 | |
| 1779 | /* |
| 1780 | * Sets the window manager icon for the display window. |
| 1781 | */ |
| 1782 | void SDL_WM_SetIcon (SDL_Surface *icon, Uint8 *mask) |
| 1783 | { |
| 1784 | SDL_VideoDevice *video = current_video; |
| 1785 | SDL_VideoDevice *this = current_video; |
| 1786 | |
| 1787 | if ( icon && video->SetIcon ) { |
| 1788 | /* Generate a mask if necessary, and create the icon! */ |
| 1789 | if ( mask == NULL ) { |
| 1790 | int mask_len = icon->h*(icon->w+7)/8; |
| 1791 | int flags = 0; |
| 1792 | mask = (Uint8 *)SDL_malloc(mask_len); |
| 1793 | if ( mask == NULL ) { |
| 1794 | return; |
| 1795 | } |
| 1796 | SDL_memset(mask, ~0, mask_len); |
| 1797 | if ( icon->flags & SDL_SRCCOLORKEY ) flags |= 1; |
| 1798 | if ( icon->flags & SDL_SRCALPHA ) flags |= 2; |
| 1799 | if( flags ) { |
| 1800 | CreateMaskFromColorKeyOrAlpha(icon, mask, flags); |
| 1801 | } |
| 1802 | video->SetIcon(video, icon, mask); |
| 1803 | SDL_free(mask); |
| 1804 | } else { |
| 1805 | video->SetIcon(this, icon, mask); |
| 1806 | } |
| 1807 | } |
| 1808 | } |
| 1809 | |
| 1810 | /* |
| 1811 | * Grab or ungrab the keyboard and mouse input. |
| 1812 | * This function returns the final grab mode after calling the |
| 1813 | * driver dependent function. |
| 1814 | */ |
| 1815 | static SDL_GrabMode SDL_WM_GrabInputRaw(SDL_GrabMode mode) |
| 1816 | { |
| 1817 | SDL_VideoDevice *video = current_video; |
| 1818 | SDL_VideoDevice *this = current_video; |
| 1819 | |
| 1820 | /* Only do something if we have support for grabs */ |
| 1821 | if ( video->GrabInput == NULL ) { |
| 1822 | return(video->input_grab); |
| 1823 | } |
| 1824 | |
| 1825 | /* If the final grab mode if off, only then do we actually grab */ |
| 1826 | #ifdef DEBUG_GRAB |
| 1827 | printf("SDL_WM_GrabInputRaw(%d) ... ", mode); |
| 1828 | #endif |
| 1829 | if ( mode == SDL_GRAB_OFF ) { |
| 1830 | if ( video->input_grab != SDL_GRAB_OFF ) { |
| 1831 | mode = video->GrabInput(this, mode); |
| 1832 | } |
| 1833 | } else { |
| 1834 | if ( video->input_grab == SDL_GRAB_OFF ) { |
| 1835 | mode = video->GrabInput(this, mode); |
| 1836 | } |
| 1837 | } |
| 1838 | if ( mode != video->input_grab ) { |
| 1839 | video->input_grab = mode; |
| 1840 | if ( video->CheckMouseMode ) { |
| 1841 | video->CheckMouseMode(this); |
| 1842 | } |
| 1843 | } |
| 1844 | #ifdef DEBUG_GRAB |
| 1845 | printf("Final mode %d\n", video->input_grab); |
| 1846 | #endif |
| 1847 | |
| 1848 | /* Return the final grab state */ |
| 1849 | if ( mode >= SDL_GRAB_FULLSCREEN ) { |
| 1850 | mode -= SDL_GRAB_FULLSCREEN; |
| 1851 | } |
| 1852 | return(mode); |
| 1853 | } |
| 1854 | SDL_GrabMode SDL_WM_GrabInput(SDL_GrabMode mode) |
| 1855 | { |
| 1856 | SDL_VideoDevice *video = current_video; |
| 1857 | |
| 1858 | /* If the video isn't initialized yet, we can't do anything */ |
| 1859 | if ( ! video ) { |
| 1860 | return SDL_GRAB_OFF; |
| 1861 | } |
| 1862 | |
| 1863 | /* Return the current mode on query */ |
| 1864 | if ( mode == SDL_GRAB_QUERY ) { |
| 1865 | mode = video->input_grab; |
| 1866 | if ( mode >= SDL_GRAB_FULLSCREEN ) { |
| 1867 | mode -= SDL_GRAB_FULLSCREEN; |
| 1868 | } |
| 1869 | return(mode); |
| 1870 | } |
| 1871 | |
| 1872 | #ifdef DEBUG_GRAB |
| 1873 | printf("SDL_WM_GrabInput(%d) ... ", mode); |
| 1874 | #endif |
| 1875 | /* If the video surface is fullscreen, we always grab */ |
| 1876 | if ( mode >= SDL_GRAB_FULLSCREEN ) { |
| 1877 | mode -= SDL_GRAB_FULLSCREEN; |
| 1878 | } |
| 1879 | if ( SDL_VideoSurface && (SDL_VideoSurface->flags & SDL_FULLSCREEN) ) { |
| 1880 | mode += SDL_GRAB_FULLSCREEN; |
| 1881 | } |
| 1882 | return(SDL_WM_GrabInputRaw(mode)); |
| 1883 | } |
| 1884 | static SDL_GrabMode SDL_WM_GrabInputOff(void) |
| 1885 | { |
| 1886 | SDL_GrabMode mode; |
| 1887 | |
| 1888 | /* First query the current grab state */ |
| 1889 | mode = SDL_WM_GrabInput(SDL_GRAB_QUERY); |
| 1890 | |
| 1891 | /* Now explicitly turn off input grab */ |
| 1892 | SDL_WM_GrabInputRaw(SDL_GRAB_OFF); |
| 1893 | |
| 1894 | /* Return the old state */ |
| 1895 | return(mode); |
| 1896 | } |
| 1897 | |
| 1898 | /* |
| 1899 | * Iconify the window in window managed environments. |
| 1900 | * A successful iconification will result in an SDL_APPACTIVE loss event. |
| 1901 | */ |
| 1902 | int SDL_WM_IconifyWindow(void) |
| 1903 | { |
| 1904 | SDL_VideoDevice *video = current_video; |
| 1905 | SDL_VideoDevice *this = current_video; |
| 1906 | int retval; |
| 1907 | |
| 1908 | retval = 0; |
| 1909 | if ( video->IconifyWindow ) { |
| 1910 | retval = video->IconifyWindow(this); |
| 1911 | } |
| 1912 | return(retval); |
| 1913 | } |
| 1914 | |
| 1915 | /* |
| 1916 | * Toggle fullscreen mode |
| 1917 | */ |
| 1918 | int SDL_WM_ToggleFullScreen(SDL_Surface *surface) |
| 1919 | { |
| 1920 | SDL_VideoDevice *video = current_video; |
| 1921 | SDL_VideoDevice *this = current_video; |
| 1922 | int toggled; |
| 1923 | |
| 1924 | toggled = 0; |
| 1925 | if ( SDL_PublicSurface && (surface == SDL_PublicSurface) && |
| 1926 | video->ToggleFullScreen ) { |
| 1927 | if ( surface->flags & SDL_FULLSCREEN ) { |
| 1928 | toggled = video->ToggleFullScreen(this, 0); |
| 1929 | if ( toggled ) { |
| 1930 | SDL_VideoSurface->flags &= ~SDL_FULLSCREEN; |
| 1931 | SDL_PublicSurface->flags &= ~SDL_FULLSCREEN; |
| 1932 | } |
| 1933 | } else { |
| 1934 | toggled = video->ToggleFullScreen(this, 1); |
| 1935 | if ( toggled ) { |
| 1936 | SDL_VideoSurface->flags |= SDL_FULLSCREEN; |
| 1937 | SDL_PublicSurface->flags |= SDL_FULLSCREEN; |
| 1938 | } |
| 1939 | } |
| 1940 | /* Double-check the grab state inside SDL_WM_GrabInput() */ |
| 1941 | if ( toggled ) { |
| 1942 | SDL_WM_GrabInput(video->input_grab); |
| 1943 | } |
| 1944 | } |
| 1945 | return(toggled); |
| 1946 | } |
| 1947 | |
| 1948 | /* |
| 1949 | * Get some platform dependent window manager information |
| 1950 | */ |
| 1951 | int SDL_GetWMInfo (SDL_SysWMinfo *info) |
| 1952 | { |
| 1953 | SDL_VideoDevice *video = current_video; |
| 1954 | SDL_VideoDevice *this = current_video; |
| 1955 | |
| 1956 | if ( video && video->GetWMInfo ) { |
| 1957 | return(video->GetWMInfo(this, info)); |
| 1958 | } else { |
| 1959 | return(0); |
| 1960 | } |
| 1961 | } |