1/* 2 SDL - Simple DirectMedia Layer 3 Copyright (C) 1997-2012 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 */ 35static 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_DUMMY 130 &DUMMY_bootstrap, 131#endif 132 NULL 133}; 134 135SDL_VideoDevice *current_video = NULL; 136 137/* Various local functions */ 138int SDL_VideoInit(const char *driver_name, Uint32 flags); 139void SDL_VideoQuit(void); 140void SDL_GL_UpdateRectsLock(SDL_VideoDevice* this, int numrects, SDL_Rect* rects); 141 142static SDL_GrabMode SDL_WM_GrabInputOff(void); 143#if SDL_VIDEO_OPENGL 144static int lock_count = 0; 145#endif 146 147 148/* 149 * Initialize the video and event subsystems -- determine native pixel format 150 */ 151int SDL_VideoInit (const char *driver_name, Uint32 flags) 152{ 153 SDL_VideoDevice *video; 154 int index; 155 int i; 156 SDL_PixelFormat vformat; 157 Uint32 video_flags; 158 159 /* Toggle the event thread flags, based on OS requirements */ 160#if defined(MUST_THREAD_EVENTS) 161 flags |= SDL_INIT_EVENTTHREAD; 162#elif defined(CANT_THREAD_EVENTS) 163 if ( (flags & SDL_INIT_EVENTTHREAD) == SDL_INIT_EVENTTHREAD ) { 164 SDL_SetError("OS doesn't support threaded events"); 165 return(-1); 166 } 167#endif 168 169 /* Check to make sure we don't overwrite 'current_video' */ 170 if ( current_video != NULL ) { 171 SDL_VideoQuit(); 172 } 173 174 /* Select the proper video driver */ 175 index = 0; 176 video = NULL; 177 if ( driver_name != NULL ) { 178#if 0 /* This will be replaced with a better driver selection API */ 179 if ( SDL_strrchr(driver_name, ':') != NULL ) { 180 index = atoi(SDL_strrchr(driver_name, ':')+1); 181 } 182#endif 183 for ( i=0; bootstrap[i]; ++i ) { 184 if ( SDL_strcasecmp(bootstrap[i]->name, driver_name) == 0) { 185 if ( bootstrap[i]->available() ) { 186 video = bootstrap[i]->create(index); 187 break; 188 } 189 } 190 } 191 } else { 192 for ( i=0; bootstrap[i]; ++i ) { 193 if ( bootstrap[i]->available() ) { 194 video = bootstrap[i]->create(index); 195 if ( video != NULL ) { 196 break; 197 } 198 } 199 } 200 } 201 if ( video == NULL ) { 202 SDL_SetError("No available video device"); 203 return(-1); 204 } 205 current_video = video; 206 current_video->name = bootstrap[i]->name; 207 208 /* Do some basic variable initialization */ 209 video->screen = NULL; 210 video->shadow = NULL; 211 video->visible = NULL; 212 video->physpal = NULL; 213 video->gammacols = NULL; 214 video->gamma = NULL; 215 video->wm_title = NULL; 216 video->wm_icon = NULL; 217 video->offset_x = 0; 218 video->offset_y = 0; 219 SDL_memset(&video->info, 0, (sizeof video->info)); 220 221 video->displayformatalphapixel = NULL; 222 223 /* Set some very sane GL defaults */ 224 video->gl_config.driver_loaded = 0; 225 video->gl_config.dll_handle = NULL; 226 video->gl_config.red_size = 3; 227 video->gl_config.green_size = 3; 228 video->gl_config.blue_size = 2; 229 video->gl_config.alpha_size = 0; 230 video->gl_config.buffer_size = 0; 231 video->gl_config.depth_size = 16; 232 video->gl_config.stencil_size = 0; 233 video->gl_config.double_buffer = 1; 234 video->gl_config.accum_red_size = 0; 235 video->gl_config.accum_green_size = 0; 236 video->gl_config.accum_blue_size = 0; 237 video->gl_config.accum_alpha_size = 0; 238 video->gl_config.stereo = 0; 239 video->gl_config.multisamplebuffers = 0; 240 video->gl_config.multisamplesamples = 0; 241 video->gl_config.accelerated = -1; /* not known, don't set */ 242 video->gl_config.swap_control = -1; /* not known, don't set */ 243 244 /* Initialize the video subsystem */ 245 SDL_memset(&vformat, 0, sizeof(vformat)); 246 if ( video->VideoInit(video, &vformat) < 0 ) { 247 SDL_VideoQuit(); 248 return(-1); 249 } 250 251 /* Create a zero sized video surface of the appropriate format */ 252 video_flags = SDL_SWSURFACE; 253 SDL_VideoSurface = SDL_CreateRGBSurface(video_flags, 0, 0, 254 vformat.BitsPerPixel, 255 vformat.Rmask, vformat.Gmask, vformat.Bmask, 0); 256 if ( SDL_VideoSurface == NULL ) { 257 SDL_VideoQuit(); 258 return(-1); 259 } 260 SDL_PublicSurface = NULL; /* Until SDL_SetVideoMode() */ 261 262#if 0 /* Don't change the current palette - may be used by other programs. 263 * The application can't do anything with the display surface until 264 * a video mode has been set anyway. :) 265 */ 266 /* If we have a palettized surface, create a default palette */ 267 if ( SDL_VideoSurface->format->palette ) { 268 SDL_PixelFormat *vf = SDL_VideoSurface->format; 269 SDL_DitherColors(vf->palette->colors, vf->BitsPerPixel); 270 video->SetColors(video, 271 0, vf->palette->ncolors, vf->palette->colors); 272 } 273#endif 274 video->info.vfmt = SDL_VideoSurface->format; 275 276 /* Start the event loop */ 277 if ( SDL_StartEventLoop(flags) < 0 ) { 278 SDL_VideoQuit(); 279 return(-1); 280 } 281 SDL_CursorInit(flags & SDL_INIT_EVENTTHREAD); 282 283 /* We're ready to go! */ 284 return(0); 285} 286 287char *SDL_VideoDriverName(char *namebuf, int maxlen) 288{ 289 if ( current_video != NULL ) { 290 SDL_strlcpy(namebuf, current_video->name, maxlen); 291 return(namebuf); 292 } 293 return(NULL); 294} 295 296/* 297 * Get the current display surface 298 */ 299SDL_Surface *SDL_GetVideoSurface(void) 300{ 301 SDL_Surface *visible; 302 303 visible = NULL; 304 if ( current_video ) { 305 visible = current_video->visible; 306 } 307 return(visible); 308} 309 310/* 311 * Get the current information about the video hardware 312 */ 313const SDL_VideoInfo *SDL_GetVideoInfo(void) 314{ 315 const SDL_VideoInfo *info; 316 317 info = NULL; 318 if ( current_video ) { 319 info = ¤t_video->info; 320 } 321 return(info); 322} 323 324/* 325 * Return a pointer to an array of available screen dimensions for the 326 * given format, sorted largest to smallest. Returns NULL if there are 327 * no dimensions available for a particular format, or (SDL_Rect **)-1 328 * if any dimension is okay for the given format. If 'format' is NULL, 329 * the mode list will be for the format given by SDL_GetVideoInfo()->vfmt 330 */ 331SDL_Rect ** SDL_ListModes (SDL_PixelFormat *format, Uint32 flags) 332{ 333 SDL_VideoDevice *video = current_video; 334 SDL_VideoDevice *this = current_video; 335 SDL_Rect **modes; 336 337 modes = NULL; 338 if ( SDL_VideoSurface ) { 339 if ( format == NULL ) { 340 format = SDL_VideoSurface->format; 341 } 342 modes = video->ListModes(this, format, flags); 343 } 344 return(modes); 345} 346 347/* 348 * Check to see if a particular video mode is supported. 349 * It returns 0 if the requested mode is not supported under any bit depth, 350 * or returns the bits-per-pixel of the closest available mode with the 351 * given width and height. If this bits-per-pixel is different from the 352 * one used when setting the video mode, SDL_SetVideoMode() will succeed, 353 * but will emulate the requested bits-per-pixel with a shadow surface. 354 */ 355static Uint8 SDL_closest_depths[4][8] = { 356 /* 8 bit closest depth ordering */ 357 { 0, 8, 16, 15, 32, 24, 0, 0 }, 358 /* 15,16 bit closest depth ordering */ 359 { 0, 16, 15, 32, 24, 8, 0, 0 }, 360 /* 24 bit closest depth ordering */ 361 { 0, 24, 32, 16, 15, 8, 0, 0 }, 362 /* 32 bit closest depth ordering */ 363 { 0, 32, 16, 15, 24, 8, 0, 0 } 364}; 365 366 367#ifdef __MACOS__ /* MPW optimization bug? */ 368#define NEGATIVE_ONE 0xFFFFFFFF 369#else 370#define NEGATIVE_ONE -1 371#endif 372 373int SDL_VideoModeOK (int width, int height, int bpp, Uint32 flags) 374{ 375 int table, b, i; 376 int supported; 377 SDL_PixelFormat format; 378 SDL_Rect **sizes; 379 380 /* Currently 1 and 4 bpp are not supported */ 381 if ( bpp < 8 || bpp > 32 ) { 382 return(0); 383 } 384 if ( (width <= 0) || (height <= 0) ) { 385 return(0); 386 } 387 388 /* Search through the list valid of modes */ 389 SDL_memset(&format, 0, sizeof(format)); 390 supported = 0; 391 table = ((bpp+7)/8)-1; 392 SDL_closest_depths[table][0] = bpp; 393 SDL_closest_depths[table][7] = 0; 394 for ( b = 0; !supported && SDL_closest_depths[table][b]; ++b ) { 395 format.BitsPerPixel = SDL_closest_depths[table][b]; 396 sizes = SDL_ListModes(&format, flags); 397 if ( sizes == (SDL_Rect **)0 ) { 398 /* No sizes supported at this bit-depth */ 399 continue; 400 } else 401 if (sizes == (SDL_Rect **)NEGATIVE_ONE) { 402 /* Any size supported at this bit-depth */ 403 supported = 1; 404 continue; 405 } else if (current_video->handles_any_size) { 406 /* Driver can center a smaller surface to simulate fullscreen */ 407 for ( i=0; sizes[i]; ++i ) { 408 if ((sizes[i]->w >= width) && (sizes[i]->h >= height)) { 409 supported = 1; /* this mode can fit the centered window. */ 410 break; 411 } 412 } 413 } else 414 for ( i=0; sizes[i]; ++i ) { 415 if ((sizes[i]->w == width) && (sizes[i]->h == height)) { 416 supported = 1; 417 break; 418 } 419 } 420 } 421 if ( supported ) { 422 --b; 423 return(SDL_closest_depths[table][b]); 424 } else { 425 return(0); 426 } 427} 428 429/* 430 * Get the closest non-emulated video mode to the one requested 431 */ 432static int SDL_GetVideoMode (int *w, int *h, int *BitsPerPixel, Uint32 flags) 433{ 434 int table, b, i; 435 int supported; 436 int native_bpp; 437 SDL_PixelFormat format; 438 SDL_Rect **sizes; 439 440 /* Check parameters */ 441 if ( *BitsPerPixel < 8 || *BitsPerPixel > 32 ) { 442 SDL_SetError("Invalid bits per pixel (range is {8...32})"); 443 return(0); 444 } 445 if ((*w <= 0) || (*h <= 0)) { 446 SDL_SetError("Invalid width or height"); 447 return(0); 448 } 449 450 /* Try the original video mode, get the closest depth */ 451 native_bpp = SDL_VideoModeOK(*w, *h, *BitsPerPixel, flags); 452 if ( native_bpp == *BitsPerPixel ) { 453 return(1); 454 } 455 if ( native_bpp > 0 ) { 456 *BitsPerPixel = native_bpp; 457 return(1); 458 } 459 460 /* No exact size match at any depth, look for closest match */ 461 SDL_memset(&format, 0, sizeof(format)); 462 supported = 0; 463 table = ((*BitsPerPixel+7)/8)-1; 464 SDL_closest_depths[table][0] = *BitsPerPixel; 465 SDL_closest_depths[table][7] = SDL_VideoSurface->format->BitsPerPixel; 466 for ( b = 0; !supported && SDL_closest_depths[table][b]; ++b ) { 467 int best; 468 469 format.BitsPerPixel = SDL_closest_depths[table][b]; 470 sizes = SDL_ListModes(&format, flags); 471 if ( sizes == (SDL_Rect **)0 ) { 472 /* No sizes supported at this bit-depth */ 473 continue; 474 } 475 best=0; 476 for ( i=0; sizes[i]; ++i ) { 477 /* Mode with both dimensions bigger or equal than asked ? */ 478 if ((sizes[i]->w >= *w) && (sizes[i]->h >= *h)) { 479 /* Mode with any dimension smaller or equal than current best ? */ 480 if ((sizes[i]->w <= sizes[best]->w) || (sizes[i]->h <= sizes[best]->h)) { 481 /* Now choose the mode that has less pixels */ 482 if ((sizes[i]->w * sizes[i]->h) <= (sizes[best]->w * sizes[best]->h)) { 483 best=i; 484 supported = 1; 485 } 486 } 487 } 488 } 489 if (supported) { 490 *w=sizes[best]->w; 491 *h=sizes[best]->h; 492 *BitsPerPixel = SDL_closest_depths[table][b]; 493 } 494 } 495 if ( ! supported ) { 496 SDL_SetError("No video mode large enough for %dx%d", *w, *h); 497 } 498 return(supported); 499} 500 501/* This should probably go somewhere else -- like SDL_surface.c */ 502static void SDL_ClearSurface(SDL_Surface *surface) 503{ 504 Uint32 black; 505 506 black = SDL_MapRGB(surface->format, 0, 0, 0); 507 SDL_FillRect(surface, NULL, black); 508 if ((surface->flags&SDL_HWSURFACE) && (surface->flags&SDL_DOUBLEBUF)) { 509 SDL_Flip(surface); 510 SDL_FillRect(surface, NULL, black); 511 } 512 if (surface->flags&SDL_FULLSCREEN) { 513 SDL_Flip(surface); 514 } 515} 516 517/* 518 * Create a shadow surface suitable for fooling the app. :-) 519 */ 520static void SDL_CreateShadowSurface(int depth) 521{ 522 Uint32 Rmask, Gmask, Bmask; 523 524 /* Allocate the shadow surface */ 525 if ( depth == (SDL_VideoSurface->format)->BitsPerPixel ) { 526 Rmask = (SDL_VideoSurface->format)->Rmask; 527 Gmask = (SDL_VideoSurface->format)->Gmask; 528 Bmask = (SDL_VideoSurface->format)->Bmask; 529 } else { 530 Rmask = Gmask = Bmask = 0; 531 } 532 SDL_ShadowSurface = SDL_CreateRGBSurface(SDL_SWSURFACE, 533 SDL_VideoSurface->w, SDL_VideoSurface->h, 534 depth, Rmask, Gmask, Bmask, 0); 535 if ( SDL_ShadowSurface == NULL ) { 536 return; 537 } 538 539 /* 8-bit shadow surfaces report that they have exclusive palette */ 540 if ( SDL_ShadowSurface->format->palette ) { 541 SDL_ShadowSurface->flags |= SDL_HWPALETTE; 542 if ( depth == (SDL_VideoSurface->format)->BitsPerPixel ) { 543 SDL_memcpy(SDL_ShadowSurface->format->palette->colors, 544 SDL_VideoSurface->format->palette->colors, 545 SDL_VideoSurface->format->palette->ncolors* 546 sizeof(SDL_Color)); 547 } else { 548 SDL_DitherColors( 549 SDL_ShadowSurface->format->palette->colors, depth); 550 } 551 } 552 553 /* If the video surface is resizable, the shadow should say so */ 554 if ( (SDL_VideoSurface->flags & SDL_RESIZABLE) == SDL_RESIZABLE ) { 555 SDL_ShadowSurface->flags |= SDL_RESIZABLE; 556 } 557 /* If the video surface has no frame, the shadow should say so */ 558 if ( (SDL_VideoSurface->flags & SDL_NOFRAME) == SDL_NOFRAME ) { 559 SDL_ShadowSurface->flags |= SDL_NOFRAME; 560 } 561 /* If the video surface is fullscreen, the shadow should say so */ 562 if ( (SDL_VideoSurface->flags & SDL_FULLSCREEN) == SDL_FULLSCREEN ) { 563 SDL_ShadowSurface->flags |= SDL_FULLSCREEN; 564 } 565 /* If the video surface is flippable, the shadow should say so */ 566 if ( (SDL_VideoSurface->flags & SDL_DOUBLEBUF) == SDL_DOUBLEBUF ) { 567 SDL_ShadowSurface->flags |= SDL_DOUBLEBUF; 568 } 569 return; 570} 571 572#ifdef __QNXNTO__ 573 #include <sys/neutrino.h> 574#endif /* __QNXNTO__ */ 575 576#ifdef WIN32 577 extern int sysevents_mouse_pressed; 578#endif 579 580/* 581 * Set the requested video mode, allocating a shadow buffer if necessary. 582 */ 583SDL_Surface * SDL_SetVideoMode (int width, int height, int bpp, Uint32 flags) 584{ 585 SDL_VideoDevice *video, *this; 586 SDL_Surface *prev_mode, *mode; 587 int video_w; 588 int video_h; 589 int video_bpp; 590 int is_opengl; 591 SDL_GrabMode saved_grab; 592 593 #ifdef WIN32 594 sysevents_mouse_pressed = 0; 595 #endif 596 597 /* Start up the video driver, if necessary.. 598 WARNING: This is the only function protected this way! 599 */ 600 if ( ! current_video ) { 601 if ( SDL_Init(SDL_INIT_VIDEO|SDL_INIT_NOPARACHUTE) < 0 ) { 602 return(NULL); 603 } 604 } 605 this = video = current_video; 606 607 /* Default to the current width and height */ 608 if ( width == 0 ) { 609 width = video->info.current_w; 610 } 611 if ( height == 0 ) { 612 height = video->info.current_h; 613 } 614 /* Default to the current video bpp */ 615 if ( bpp == 0 ) { 616 flags |= SDL_ANYFORMAT; 617 bpp = SDL_VideoSurface->format->BitsPerPixel; 618 } 619 620 /* Get a good video mode, the closest one possible */ 621 video_w = width; 622 video_h = height; 623 video_bpp = bpp; 624 if ( ! SDL_GetVideoMode(&video_w, &video_h, &video_bpp, flags) ) { 625 return(NULL); 626 } 627 628 /* Check the requested flags */ 629 /* There's no palette in > 8 bits-per-pixel mode */ 630 if ( video_bpp > 8 ) { 631 flags &= ~SDL_HWPALETTE; 632 } 633#if 0 634 if ( (flags&SDL_FULLSCREEN) != SDL_FULLSCREEN ) { 635 /* There's no windowed double-buffering */ 636 flags &= ~SDL_DOUBLEBUF; 637 } 638#endif 639 if ( (flags&SDL_DOUBLEBUF) == SDL_DOUBLEBUF ) { 640 /* Use hardware surfaces when double-buffering */ 641 flags |= SDL_HWSURFACE; 642 } 643 644 is_opengl = ( ( flags & SDL_OPENGL ) == SDL_OPENGL ); 645 if ( is_opengl ) { 646 /* These flags are for 2D video modes only */ 647 flags &= ~(SDL_HWSURFACE|SDL_DOUBLEBUF); 648 } 649 650 /* Reset the keyboard here so event callbacks can run */ 651 SDL_ResetKeyboard(); 652 SDL_ResetMouse(); 653 SDL_SetMouseRange(width, height); 654 SDL_cursorstate &= ~CURSOR_USINGSW; 655 656 /* Clean up any previous video mode */ 657 if ( SDL_PublicSurface != NULL ) { 658 SDL_PublicSurface = NULL; 659 } 660 if ( SDL_ShadowSurface != NULL ) { 661 SDL_Surface *ready_to_go; 662 ready_to_go = SDL_ShadowSurface; 663 SDL_ShadowSurface = NULL; 664 SDL_FreeSurface(ready_to_go); 665 } 666 if ( video->physpal ) { 667 SDL_free(video->physpal->colors); 668 SDL_free(video->physpal); 669 video->physpal = NULL; 670 } 671 if( video->gammacols) { 672 SDL_free(video->gammacols); 673 video->gammacols = NULL; 674 } 675 676 /* Save the previous grab state and turn off grab for mode switch */ 677 saved_grab = SDL_WM_GrabInputOff(); 678 679 /* Try to set the video mode, along with offset and clipping */ 680 prev_mode = SDL_VideoSurface; 681 SDL_LockCursor(); 682 SDL_VideoSurface = NULL; /* In case it's freed by driver */ 683 mode = video->SetVideoMode(this, prev_mode,video_w,video_h,video_bpp,flags); 684 if ( mode ) { /* Prevent resize events from mode change */ 685 /* But not on OS/2 */ 686#ifndef __OS2__ 687 SDL_PrivateResize(mode->w, mode->h); 688#endif 689 690 /* Sam - If we asked for OpenGL mode, and didn't get it, fail */ 691 if ( is_opengl && !(mode->flags & SDL_OPENGL) ) { 692 mode = NULL; 693 SDL_SetError("OpenGL not available"); 694 } 695 } 696 /* 697 * rcg11292000 698 * If you try to set an SDL_OPENGL surface, and fail to find a 699 * matching visual, then the next call to SDL_SetVideoMode() 700 * will segfault, since we no longer point to a dummy surface, 701 * but rather NULL. 702 * Sam 11/29/00 703 * WARNING, we need to make sure that the previous mode hasn't 704 * already been freed by the video driver. What do we do in 705 * that case? Should we call SDL_VideoInit() again? 706 */ 707 SDL_VideoSurface = (mode != NULL) ? mode : prev_mode; 708 709 if ( (mode != NULL) && (!is_opengl) ) { 710 /* Sanity check */ 711 if ( (mode->w < width) || (mode->h < height) ) { 712 SDL_SetError("Video mode smaller than requested"); 713 return(NULL); 714 } 715 716 /* If we have a palettized surface, create a default palette */ 717 if ( mode->format->palette ) { 718 SDL_PixelFormat *vf = mode->format; 719 SDL_DitherColors(vf->palette->colors, vf->BitsPerPixel); 720 video->SetColors(this, 0, vf->palette->ncolors, 721 vf->palette->colors); 722 } 723 724 /* Clear the surface to black */ 725 video->offset_x = 0; 726 video->offset_y = 0; 727 mode->offset = 0; 728 SDL_SetClipRect(mode, NULL); 729 SDL_ClearSurface(mode); 730 731 /* Now adjust the offsets to match the desired mode */ 732 video->offset_x = (mode->w-width)/2; 733 video->offset_y = (mode->h-height)/2; 734 mode->offset = video->offset_y*mode->pitch + 735 video->offset_x*mode->format->BytesPerPixel; 736#ifdef DEBUG_VIDEO 737 fprintf(stderr, 738 "Requested mode: %dx%dx%d, obtained mode %dx%dx%d (offset %d)\n", 739 width, height, bpp, 740 mode->w, mode->h, mode->format->BitsPerPixel, mode->offset); 741#endif 742 mode->w = width; 743 mode->h = height; 744 SDL_SetClipRect(mode, NULL); 745 } 746 SDL_ResetCursor(); 747 SDL_UnlockCursor(); 748 749 /* If we failed setting a video mode, return NULL... (Uh Oh!) */ 750 if ( mode == NULL ) { 751 return(NULL); 752 } 753 754 /* If there is no window manager, set the SDL_NOFRAME flag */ 755 if ( ! video->info.wm_available ) { 756 mode->flags |= SDL_NOFRAME; 757 } 758 759 /* Reset the mouse cursor and grab for new video mode */ 760 SDL_SetCursor(NULL); 761 if ( video->UpdateMouse ) { 762 video->UpdateMouse(this); 763 } 764 SDL_WM_GrabInput(saved_grab); 765 SDL_GetRelativeMouseState(NULL, NULL); /* Clear first large delta */ 766 767#if SDL_VIDEO_OPENGL 768 /* Load GL symbols (before MakeCurrent, where we need glGetString). */ 769 if ( flags & (SDL_OPENGL | SDL_OPENGLBLIT) ) { 770 771#if defined(__QNXNTO__) && (_NTO_VERSION < 630) 772#define __SDL_NOGETPROCADDR__ 773#elif defined(__MINT__) 774#define __SDL_NOGETPROCADDR__ 775#endif 776#ifdef __SDL_NOGETPROCADDR__ 777 #define SDL_PROC(ret,func,params) video->func=func; 778#else 779 #define SDL_PROC(ret,func,params) \ 780 do { \ 781 video->func = SDL_GL_GetProcAddress(#func); \ 782 if ( ! video->func ) { \ 783 SDL_SetError("Couldn't load GL function %s: %s\n", #func, SDL_GetError()); \ 784 return(NULL); \ 785 } \ 786 } while ( 0 ); 787 788#endif /* __SDL_NOGETPROCADDR__ */ 789 790#include "SDL_glfuncs.h" 791#undef SDL_PROC 792 } 793#endif /* SDL_VIDEO_OPENGL */ 794 795 /* If we're running OpenGL, make the context current */ 796 if ( (video->screen->flags & SDL_OPENGL) && 797 video->GL_MakeCurrent ) { 798 if ( video->GL_MakeCurrent(this) < 0 ) { 799 return(NULL); 800 } 801 } 802 803 /* Set up a fake SDL surface for OpenGL "blitting" */ 804 if ( (flags & SDL_OPENGLBLIT) == SDL_OPENGLBLIT ) { 805 /* Load GL functions for performing the texture updates */ 806#if SDL_VIDEO_OPENGL 807 808 /* Create a software surface for blitting */ 809#ifdef GL_VERSION_1_2 810 /* If the implementation either supports the packed pixels 811 extension, or implements the core OpenGL 1.2 API, it will 812 support the GL_UNSIGNED_SHORT_5_6_5 texture format. 813 */ 814 if ( (bpp == 16) && 815 (SDL_strstr((const char *)video->glGetString(GL_EXTENSIONS), "GL_EXT_packed_pixels") || 816 (SDL_atof((const char *)video->glGetString(GL_VERSION)) >= 1.2f)) 817 ) { 818 video->is_32bit = 0; 819 SDL_VideoSurface = SDL_CreateRGBSurface( 820 flags, 821 width, 822 height, 823 16, 824 31 << 11, 825 63 << 5, 826 31, 827 0 828 ); 829 } 830 else 831#endif /* OpenGL 1.2 */ 832 { 833 video->is_32bit = 1; 834 SDL_VideoSurface = SDL_CreateRGBSurface( 835 flags, 836 width, 837 height, 838 32, 839#if SDL_BYTEORDER == SDL_LIL_ENDIAN 840 0x000000FF, 841 0x0000FF00, 842 0x00FF0000, 843 0xFF000000 844#else 845 0xFF000000, 846 0x00FF0000, 847 0x0000FF00, 848 0x000000FF 849#endif 850 ); 851 } 852 if ( ! SDL_VideoSurface ) { 853 return(NULL); 854 } 855 SDL_VideoSurface->flags = mode->flags | SDL_OPENGLBLIT; 856 857 /* Free the original video mode surface (is this safe?) */ 858 SDL_FreeSurface(mode); 859 860 /* Set the surface completely opaque & white by default */ 861 SDL_memset( SDL_VideoSurface->pixels, 255, SDL_VideoSurface->h * SDL_VideoSurface->pitch ); 862 video->glGenTextures( 1, &video->texture ); 863 video->glBindTexture( GL_TEXTURE_2D, video->texture ); 864 video->glTexImage2D( 865 GL_TEXTURE_2D, 866 0, 867 video->is_32bit ? GL_RGBA : GL_RGB, 868 256, 869 256, 870 0, 871 video->is_32bit ? GL_RGBA : GL_RGB, 872#ifdef GL_VERSION_1_2 873 video->is_32bit ? GL_UNSIGNED_BYTE : GL_UNSIGNED_SHORT_5_6_5, 874#else 875 GL_UNSIGNED_BYTE, 876#endif 877 NULL); 878 879 video->UpdateRects = SDL_GL_UpdateRectsLock; 880#else 881 SDL_SetError("Somebody forgot to #define SDL_VIDEO_OPENGL"); 882 return(NULL); 883#endif 884 } 885 886 /* Create a shadow surface if necessary */ 887 /* There are three conditions under which we create a shadow surface: 888 1. We need a particular bits-per-pixel that we didn't get. 889 2. We need a hardware palette and didn't get one. 890 3. We need a software surface and got a hardware surface. 891 */ 892 if ( !(SDL_VideoSurface->flags & SDL_OPENGL) && 893 ( 894 ( !(flags&SDL_ANYFORMAT) && 895 (SDL_VideoSurface->format->BitsPerPixel != bpp)) || 896 ( (flags&SDL_HWPALETTE) && 897 !(SDL_VideoSurface->flags&SDL_HWPALETTE)) || 898 /* If the surface is in hardware, video writes are visible 899 as soon as they are performed, so we need to buffer them 900 */ 901 ( ((flags&SDL_HWSURFACE) == SDL_SWSURFACE) && 902 (SDL_VideoSurface->flags&SDL_HWSURFACE)) || 903 ( (flags&SDL_DOUBLEBUF) && 904 (SDL_VideoSurface->flags&SDL_HWSURFACE) && 905 !(SDL_VideoSurface->flags&SDL_DOUBLEBUF)) 906 ) ) { 907 SDL_CreateShadowSurface(bpp); 908 if ( SDL_ShadowSurface == NULL ) { 909 SDL_SetError("Couldn't create shadow surface"); 910 return(NULL); 911 } 912 SDL_PublicSurface = SDL_ShadowSurface; 913 } else { 914 SDL_PublicSurface = SDL_VideoSurface; 915 } 916 video->info.vfmt = SDL_VideoSurface->format; 917 video->info.current_w = SDL_VideoSurface->w; 918 video->info.current_h = SDL_VideoSurface->h; 919 920 /* We're done! */ 921 return(SDL_PublicSurface); 922} 923 924/* 925 * Convert a surface into the video pixel format. 926 */ 927SDL_Surface * SDL_DisplayFormat (SDL_Surface *surface) 928{ 929 Uint32 flags; 930 931 if ( ! SDL_PublicSurface ) { 932 SDL_SetError("No video mode has been set"); 933 return(NULL); 934 } 935 /* Set the flags appropriate for copying to display surface */ 936 if (((SDL_PublicSurface->flags&SDL_HWSURFACE) == SDL_HWSURFACE) && current_video->info.blit_hw) 937 flags = SDL_HWSURFACE; 938 else 939 flags = SDL_SWSURFACE; 940#ifdef AUTORLE_DISPLAYFORMAT 941 flags |= (surface->flags & (SDL_SRCCOLORKEY|SDL_SRCALPHA)); 942 flags |= SDL_RLEACCELOK; 943#else 944 flags |= surface->flags & (SDL_SRCCOLORKEY|SDL_SRCALPHA|SDL_RLEACCELOK); 945#endif 946 return(SDL_ConvertSurface(surface, SDL_PublicSurface->format, flags)); 947} 948 949/* 950 * Convert a surface into a format that's suitable for blitting to 951 * the screen, but including an alpha channel. 952 */ 953SDL_Surface *SDL_DisplayFormatAlpha(SDL_Surface *surface) 954{ 955 SDL_PixelFormat *vf; 956 SDL_PixelFormat *format; 957 SDL_Surface *converted; 958 Uint32 flags; 959 /* default to ARGB8888 */ 960 Uint32 amask = 0xff000000; 961 Uint32 rmask = 0x00ff0000; 962 Uint32 gmask = 0x0000ff00; 963 Uint32 bmask = 0x000000ff; 964 965 if ( ! SDL_PublicSurface ) { 966 SDL_SetError("No video mode has been set"); 967 return(NULL); 968 } 969 vf = SDL_PublicSurface->format; 970 971 switch(vf->BytesPerPixel) { 972 case 2: 973 /* For XGY5[56]5, use, AXGY8888, where {X, Y} = {R, B}. 974 For anything else (like ARGB4444) it doesn't matter 975 since we have no special code for it anyway */ 976 if ( (vf->Rmask == 0x1f) && 977 (vf->Bmask == 0xf800 || vf->Bmask == 0x7c00)) { 978 rmask = 0xff; 979 bmask = 0xff0000; 980 } 981 break; 982 983 case 3: 984 case 4: 985 /* Keep the video format, as long as the high 8 bits are 986 unused or alpha */ 987 if ( (vf->Rmask == 0xff) && (vf->Bmask == 0xff0000) ) { 988 rmask = 0xff; 989 bmask = 0xff0000; 990 } else if ( vf->Rmask == 0xFF00 && (vf->Bmask == 0xFF000000) ) { 991 amask = 0x000000FF; 992 rmask = 0x0000FF00; 993 gmask = 0x00FF0000; 994 bmask = 0xFF000000; 995 } 996 break; 997 998 default: 999 /* We have no other optimised formats right now. When/if a new 1000 optimised alpha format is written, add the converter here */ 1001 break; 1002 } 1003 format = SDL_AllocFormat(32, rmask, gmask, bmask, amask); 1004 flags = SDL_PublicSurface->flags & SDL_HWSURFACE; 1005 flags |= surface->flags & (SDL_SRCALPHA | SDL_RLEACCELOK); 1006 converted = SDL_ConvertSurface(surface, format, flags); 1007 SDL_FreeFormat(format); 1008 return(converted); 1009} 1010 1011/* 1012 * Update a specific portion of the physical screen 1013 */ 1014void SDL_UpdateRect(SDL_Surface *screen, Sint32 x, Sint32 y, Uint32 w, Uint32 h) 1015{ 1016 if ( screen ) { 1017 SDL_Rect rect; 1018 1019 /* Perform some checking */ 1020 if ( w == 0 ) 1021 w = screen->w; 1022 if ( h == 0 ) 1023 h = screen->h; 1024 if ( (int)(x+w) > screen->w ) 1025 return; 1026 if ( (int)(y+h) > screen->h ) 1027 return; 1028 1029 /* Fill the rectangle */ 1030 rect.x = (Sint16)x; 1031 rect.y = (Sint16)y; 1032 rect.w = (Uint16)w; 1033 rect.h = (Uint16)h; 1034 SDL_UpdateRects(screen, 1, &rect); 1035 } 1036} 1037void SDL_UpdateRects (SDL_Surface *screen, int numrects, SDL_Rect *rects) 1038{ 1039 int i; 1040 SDL_VideoDevice *video = current_video; 1041 SDL_VideoDevice *this = current_video; 1042 1043 if ( (screen->flags & (SDL_OPENGL | SDL_OPENGLBLIT)) == SDL_OPENGL ) { 1044 SDL_SetError("OpenGL active, use SDL_GL_SwapBuffers()"); 1045 return; 1046 } 1047 if ( screen == SDL_ShadowSurface ) { 1048 /* Blit the shadow surface using saved mapping */ 1049 SDL_Palette *pal = screen->format->palette; 1050 SDL_Color *saved_colors = NULL; 1051 if ( pal && !(SDL_VideoSurface->flags & SDL_HWPALETTE) ) { 1052 /* simulated 8bpp, use correct physical palette */ 1053 saved_colors = pal->colors; 1054 if ( video->gammacols ) { 1055 /* gamma-corrected palette */ 1056 pal->colors = video->gammacols; 1057 } else if ( video->physpal ) { 1058 /* physical palette different from logical */ 1059 pal->colors = video->physpal->colors; 1060 } 1061 } 1062 if ( SHOULD_DRAWCURSOR(SDL_cursorstate) ) { 1063 SDL_LockCursor(); 1064 SDL_DrawCursor(SDL_ShadowSurface); 1065 for ( i=0; i<numrects; ++i ) { 1066 SDL_LowerBlit(SDL_ShadowSurface, &rects[i], 1067 SDL_VideoSurface, &rects[i]); 1068 } 1069 SDL_EraseCursor(SDL_ShadowSurface); 1070 SDL_UnlockCursor(); 1071 } else { 1072 for ( i=0; i<numrects; ++i ) { 1073 SDL_LowerBlit(SDL_ShadowSurface, &rects[i], 1074 SDL_VideoSurface, &rects[i]); 1075 } 1076 } 1077 if ( saved_colors ) { 1078 pal->colors = saved_colors; 1079 } 1080 1081 /* Fall through to video surface update */ 1082 screen = SDL_VideoSurface; 1083 } 1084 if ( screen == SDL_VideoSurface ) { 1085 /* Update the video surface */ 1086 if ( screen->offset ) { 1087 for ( i=0; i<numrects; ++i ) { 1088 rects[i].x += video->offset_x; 1089 rects[i].y += video->offset_y; 1090 } 1091 video->UpdateRects(this, numrects, rects); 1092 for ( i=0; i<numrects; ++i ) { 1093 rects[i].x -= video->offset_x; 1094 rects[i].y -= video->offset_y; 1095 } 1096 } else { 1097 video->UpdateRects(this, numrects, rects); 1098 } 1099 } 1100} 1101 1102/* 1103 * Performs hardware double buffering, if possible, or a full update if not. 1104 */ 1105int SDL_Flip(SDL_Surface *screen) 1106{ 1107 SDL_VideoDevice *video = current_video; 1108 /* Copy the shadow surface to the video surface */ 1109 if ( screen == SDL_ShadowSurface ) { 1110 SDL_Rect rect; 1111 SDL_Palette *pal = screen->format->palette; 1112 SDL_Color *saved_colors = NULL; 1113 if ( pal && !(SDL_VideoSurface->flags & SDL_HWPALETTE) ) { 1114 /* simulated 8bpp, use correct physical palette */ 1115 saved_colors = pal->colors; 1116 if ( video->gammacols ) { 1117 /* gamma-corrected palette */ 1118 pal->colors = video->gammacols; 1119 } else if ( video->physpal ) { 1120 /* physical palette different from logical */ 1121 pal->colors = video->physpal->colors; 1122 } 1123 } 1124 1125 rect.x = 0; 1126 rect.y = 0; 1127 rect.w = screen->w; 1128 rect.h = screen->h; 1129 if ( SHOULD_DRAWCURSOR(SDL_cursorstate) ) { 1130 SDL_LockCursor(); 1131 SDL_DrawCursor(SDL_ShadowSurface); 1132 SDL_LowerBlit(SDL_ShadowSurface, &rect, 1133 SDL_VideoSurface, &rect); 1134 SDL_EraseCursor(SDL_ShadowSurface); 1135 SDL_UnlockCursor(); 1136 } else { 1137 SDL_LowerBlit(SDL_ShadowSurface, &rect, 1138 SDL_VideoSurface, &rect); 1139 } 1140 if ( saved_colors ) { 1141 pal->colors = saved_colors; 1142 } 1143 1144 /* Fall through to video surface update */ 1145 screen = SDL_VideoSurface; 1146 } 1147 if ( (screen->flags & SDL_DOUBLEBUF) == SDL_DOUBLEBUF ) { 1148 SDL_VideoDevice *this = current_video; 1149 return(video->FlipHWSurface(this, SDL_VideoSurface)); 1150 } else { 1151 SDL_UpdateRect(screen, 0, 0, 0, 0); 1152 } 1153 return(0); 1154} 1155 1156static void SetPalette_logical(SDL_Surface *screen, SDL_Color *colors, 1157 int firstcolor, int ncolors) 1158{ 1159 SDL_Palette *pal = screen->format->palette; 1160 SDL_Palette *vidpal; 1161 1162 if ( colors != (pal->colors + firstcolor) ) { 1163 SDL_memcpy(pal->colors + firstcolor, colors, 1164 ncolors * sizeof(*colors)); 1165 } 1166 1167 if ( current_video && SDL_VideoSurface ) { 1168 vidpal = SDL_VideoSurface->format->palette; 1169 if ( (screen == SDL_ShadowSurface) && vidpal ) { 1170 /* 1171 * This is a shadow surface, and the physical 1172 * framebuffer is also indexed. Propagate the 1173 * changes to its logical palette so that 1174 * updates are always identity blits 1175 */ 1176 SDL_memcpy(vidpal->colors + firstcolor, colors, 1177 ncolors * sizeof(*colors)); 1178 } 1179 } 1180 SDL_FormatChanged(screen); 1181} 1182 1183static int SetPalette_physical(SDL_Surface *screen, 1184 SDL_Color *colors, int firstcolor, int ncolors) 1185{ 1186 SDL_VideoDevice *video = current_video; 1187 int gotall = 1; 1188 1189 if ( video->physpal ) { 1190 /* We need to copy the new colors, since we haven't 1191 * already done the copy in the logical set above. 1192 */ 1193 SDL_memcpy(video->physpal->colors + firstcolor, 1194 colors, ncolors * sizeof(*colors)); 1195 } 1196 if ( screen == SDL_ShadowSurface ) { 1197 if ( SDL_VideoSurface->flags & SDL_HWPALETTE ) { 1198 /* 1199 * The real screen is also indexed - set its physical 1200 * palette. The physical palette does not include the 1201 * gamma modification, we apply it directly instead, 1202 * but this only happens if we have hardware palette. 1203 */ 1204 screen = SDL_VideoSurface; 1205 } else { 1206 /* 1207 * The video surface is not indexed - invalidate any 1208 * active shadow-to-video blit mappings. 1209 */ 1210 if ( screen->map->dst == SDL_VideoSurface ) { 1211 SDL_InvalidateMap(screen->map); 1212 } 1213 if ( video->gamma ) { 1214 if( ! video->gammacols ) { 1215 SDL_Palette *pp = video->physpal; 1216 if(!pp) 1217 pp = screen->format->palette; 1218 video->gammacols = SDL_malloc(pp->ncolors 1219 * sizeof(SDL_Color)); 1220 SDL_ApplyGamma(video->gamma, 1221 pp->colors, 1222 video->gammacols, 1223 pp->ncolors); 1224 } else { 1225 SDL_ApplyGamma(video->gamma, colors, 1226 video->gammacols 1227 + firstcolor, 1228 ncolors); 1229 } 1230 } 1231 SDL_UpdateRect(screen, 0, 0, 0, 0); 1232 } 1233 } 1234 1235 if ( screen == SDL_VideoSurface ) { 1236 SDL_Color gcolors[256]; 1237 1238 if ( video->gamma ) { 1239 SDL_ApplyGamma(video->gamma, colors, gcolors, ncolors); 1240 colors = gcolors; 1241 } 1242 gotall = video->SetColors(video, firstcolor, ncolors, colors); 1243 if ( ! gotall ) { 1244 /* The video flags shouldn't have SDL_HWPALETTE, and 1245 the video driver is responsible for copying back the 1246 correct colors into the video surface palette. 1247 */ 1248 ; 1249 } 1250 SDL_CursorPaletteChanged(); 1251 } 1252 return gotall; 1253} 1254 1255/* 1256 * Set the physical and/or logical colormap of a surface: 1257 * Only the screen has a physical colormap. It determines what is actually 1258 * sent to the display. 1259 * The logical colormap is used to map blits to/from the surface. 1260 * 'which' is one or both of SDL_LOGPAL, SDL_PHYSPAL 1261 * 1262 * Return nonzero if all colours were set as requested, or 0 otherwise. 1263 */ 1264int SDL_SetPalette(SDL_Surface *screen, int which, 1265 SDL_Color *colors, int firstcolor, int ncolors) 1266{ 1267 SDL_Palette *pal; 1268 int gotall; 1269 int palsize; 1270 1271 if ( !screen ) { 1272 return 0; 1273 } 1274 if ( !current_video || screen != SDL_PublicSurface ) { 1275 /* only screens have physical palettes */ 1276 which &= ~SDL_PHYSPAL; 1277 } else if ( (screen->flags & SDL_HWPALETTE) != SDL_HWPALETTE ) { 1278 /* hardware palettes required for split colormaps */ 1279 which |= SDL_PHYSPAL | SDL_LOGPAL; 1280 } 1281 1282 /* Verify the parameters */ 1283 pal = screen->format->palette; 1284 if( !pal ) { 1285 return 0; /* not a palettized surface */ 1286 } 1287 gotall = 1; 1288 palsize = 1 << screen->format->BitsPerPixel; 1289 if ( ncolors > (palsize - firstcolor) ) { 1290 ncolors = (palsize - firstcolor); 1291 gotall = 0; 1292 } 1293 1294 if ( which & SDL_LOGPAL ) { 1295 /* 1296 * Logical palette change: The actual screen isn't affected, 1297 * but the internal colormap is altered so that the 1298 * interpretation of the pixel values (for blits etc) is 1299 * changed. 1300 */ 1301 SetPalette_logical(screen, colors, firstcolor, ncolors); 1302 } 1303 if ( which & SDL_PHYSPAL ) { 1304 SDL_VideoDevice *video = current_video; 1305 /* 1306 * Physical palette change: This doesn't affect the 1307 * program's idea of what the screen looks like, but changes 1308 * its actual appearance. 1309 */ 1310 if ( !video->physpal && !(which & SDL_LOGPAL) ) { 1311 /* Lazy physical palette allocation */ 1312 int size; 1313 SDL_Palette *pp = SDL_malloc(sizeof(*pp)); 1314 if ( !pp ) { 1315 return 0; 1316 } 1317 video->physpal = pp; 1318 pp->ncolors = pal->ncolors; 1319 size = pp->ncolors * sizeof(SDL_Color); 1320 pp->colors = SDL_malloc(size); 1321 if ( !pp->colors ) { 1322 return 0; 1323 } 1324 SDL_memcpy(pp->colors, pal->colors, size); 1325 } 1326 if ( ! SetPalette_physical(screen, 1327 colors, firstcolor, ncolors) ) { 1328 gotall = 0; 1329 } 1330 } 1331 return gotall; 1332} 1333 1334int SDL_SetColors(SDL_Surface *screen, SDL_Color *colors, int firstcolor, 1335 int ncolors) 1336{ 1337 return SDL_SetPalette(screen, SDL_LOGPAL | SDL_PHYSPAL, 1338 colors, firstcolor, ncolors); 1339} 1340 1341/* 1342 * Clean up the video subsystem 1343 */ 1344void SDL_VideoQuit (void) 1345{ 1346 SDL_Surface *ready_to_go; 1347 1348 if ( current_video ) { 1349 SDL_VideoDevice *video = current_video; 1350 SDL_VideoDevice *this = current_video; 1351 1352 /* Halt event processing before doing anything else */ 1353 SDL_StopEventLoop(); 1354 1355 /* Clean up allocated window manager items */ 1356 if ( SDL_PublicSurface ) { 1357 SDL_PublicSurface = NULL; 1358 } 1359 SDL_CursorQuit(); 1360 1361 /* Just in case... */ 1362 SDL_WM_GrabInputOff(); 1363 1364 /* Clean up the system video */ 1365 video->VideoQuit(this); 1366 1367 /* Free any lingering surfaces */ 1368 ready_to_go = SDL_ShadowSurface; 1369 SDL_ShadowSurface = NULL; 1370 SDL_FreeSurface(ready_to_go); 1371 if ( SDL_VideoSurface != NULL ) { 1372 ready_to_go = SDL_VideoSurface; 1373 SDL_VideoSurface = NULL; 1374 SDL_FreeSurface(ready_to_go); 1375 } 1376 SDL_PublicSurface = NULL; 1377 1378 /* Clean up miscellaneous memory */ 1379 if ( video->physpal ) { 1380 SDL_free(video->physpal->colors); 1381 SDL_free(video->physpal); 1382 video->physpal = NULL; 1383 } 1384 if ( video->gammacols ) { 1385 SDL_free(video->gammacols); 1386 video->gammacols = NULL; 1387 } 1388 if ( video->gamma ) { 1389 SDL_free(video->gamma); 1390 video->gamma = NULL; 1391 } 1392 if ( video->wm_title != NULL ) { 1393 SDL_free(video->wm_title); 1394 video->wm_title = NULL; 1395 } 1396 if ( video->wm_icon != NULL ) { 1397 SDL_free(video->wm_icon); 1398 video->wm_icon = NULL; 1399 } 1400 1401 /* Finish cleaning up video subsystem */ 1402 video->free(this); 1403 current_video = NULL; 1404 } 1405 return; 1406} 1407 1408/* Load the GL driver library */ 1409int SDL_GL_LoadLibrary(const char *path) 1410{ 1411 SDL_VideoDevice *video = current_video; 1412 SDL_VideoDevice *this = current_video; 1413 int retval; 1414 1415 retval = -1; 1416 if ( video == NULL ) { 1417 SDL_SetError("Video subsystem has not been initialized"); 1418 } else { 1419 if ( video->GL_LoadLibrary ) { 1420 retval = video->GL_LoadLibrary(this, path); 1421 } else { 1422 SDL_SetError("No dynamic GL support in video driver"); 1423 } 1424 } 1425 return(retval); 1426} 1427 1428void *SDL_GL_GetProcAddress(const char* proc) 1429{ 1430 SDL_VideoDevice *video = current_video; 1431 SDL_VideoDevice *this = current_video; 1432 void *func; 1433 1434 func = NULL; 1435 if ( video->GL_GetProcAddress ) { 1436 if ( video->gl_config.driver_loaded ) { 1437 func = video->GL_GetProcAddress(this, proc); 1438 } else { 1439 SDL_SetError("No GL driver has been loaded"); 1440 } 1441 } else { 1442 SDL_SetError("No dynamic GL support in video driver"); 1443 } 1444 return func; 1445} 1446 1447/* Set the specified GL attribute for setting up a GL video mode */ 1448int SDL_GL_SetAttribute( SDL_GLattr attr, int value ) 1449{ 1450 int retval; 1451 SDL_VideoDevice *video = current_video; 1452 1453 retval = 0; 1454 switch (attr) { 1455 case SDL_GL_RED_SIZE: 1456 video->gl_config.red_size = value; 1457 break; 1458 case SDL_GL_GREEN_SIZE: 1459 video->gl_config.green_size = value; 1460 break; 1461 case SDL_GL_BLUE_SIZE: 1462 video->gl_config.blue_size = value; 1463 break; 1464 case SDL_GL_ALPHA_SIZE: 1465 video->gl_config.alpha_size = value; 1466 break; 1467 case SDL_GL_DOUBLEBUFFER: 1468 video->gl_config.double_buffer = value; 1469 break; 1470 case SDL_GL_BUFFER_SIZE: 1471 video->gl_config.buffer_size = value; 1472 break; 1473 case SDL_GL_DEPTH_SIZE: 1474 video->gl_config.depth_size = value; 1475 break; 1476 case SDL_GL_STENCIL_SIZE: 1477 video->gl_config.stencil_size = value; 1478 break; 1479 case SDL_GL_ACCUM_RED_SIZE: 1480 video->gl_config.accum_red_size = value; 1481 break; 1482 case SDL_GL_ACCUM_GREEN_SIZE: 1483 video->gl_config.accum_green_size = value; 1484 break; 1485 case SDL_GL_ACCUM_BLUE_SIZE: 1486 video->gl_config.accum_blue_size = value; 1487 break; 1488 case SDL_GL_ACCUM_ALPHA_SIZE: 1489 video->gl_config.accum_alpha_size = value; 1490 break; 1491 case SDL_GL_STEREO: 1492 video->gl_config.stereo = value; 1493 break; 1494 case SDL_GL_MULTISAMPLEBUFFERS: 1495 video->gl_config.multisamplebuffers = value; 1496 break; 1497 case SDL_GL_MULTISAMPLESAMPLES: 1498 video->gl_config.multisamplesamples = value; 1499 break; 1500 case SDL_GL_ACCELERATED_VISUAL: 1501 video->gl_config.accelerated = value; 1502 break; 1503 case SDL_GL_SWAP_CONTROL: 1504 video->gl_config.swap_control = value; 1505 break; 1506 default: 1507 SDL_SetError("Unknown OpenGL attribute"); 1508 retval = -1; 1509 break; 1510 } 1511 return(retval); 1512} 1513 1514/* Retrieve an attribute value from the windowing system. */ 1515int SDL_GL_GetAttribute(SDL_GLattr attr, int* value) 1516{ 1517 int retval = -1; 1518 SDL_VideoDevice* video = current_video; 1519 SDL_VideoDevice* this = current_video; 1520 1521 if ( video->GL_GetAttribute ) { 1522 retval = this->GL_GetAttribute(this, attr, value); 1523 } else { 1524 *value = 0; 1525 SDL_SetError("GL_GetAttribute not supported"); 1526 } 1527 return retval; 1528} 1529 1530/* Perform a GL buffer swap on the current GL context */ 1531void SDL_GL_SwapBuffers(void) 1532{ 1533 SDL_VideoDevice *video = current_video; 1534 SDL_VideoDevice *this = current_video; 1535 1536 if ( video->screen->flags & SDL_OPENGL ) { 1537 video->GL_SwapBuffers(this); 1538 } else { 1539 SDL_SetError("OpenGL video mode has not been set"); 1540 } 1541} 1542 1543/* Update rects with locking */ 1544void SDL_GL_UpdateRectsLock(SDL_VideoDevice* this, int numrects, SDL_Rect *rects) 1545{ 1546 SDL_GL_Lock(); 1547 SDL_GL_UpdateRects(numrects, rects); 1548 SDL_GL_Unlock(); 1549} 1550 1551/* Update rects without state setting and changing (the caller is responsible for it) */ 1552void SDL_GL_UpdateRects(int numrects, SDL_Rect *rects) 1553{ 1554#if SDL_VIDEO_OPENGL 1555 SDL_VideoDevice *this = current_video; 1556 SDL_Rect update, tmp; 1557 int x, y, i; 1558 1559 for ( i = 0; i < numrects; i++ ) 1560 { 1561 tmp.y = rects[i].y; 1562 tmp.h = rects[i].h; 1563 for ( y = 0; y <= rects[i].h / 256; y++ ) 1564 { 1565 tmp.x = rects[i].x; 1566 tmp.w = rects[i].w; 1567 for ( x = 0; x <= rects[i].w / 256; x++ ) 1568 { 1569 update.x = tmp.x; 1570 update.y = tmp.y; 1571 update.w = tmp.w; 1572 update.h = tmp.h; 1573 1574 if ( update.w > 256 ) 1575 update.w = 256; 1576 1577 if ( update.h > 256 ) 1578 update.h = 256; 1579 1580 this->glFlush(); 1581 this->glTexSubImage2D( 1582 GL_TEXTURE_2D, 1583 0, 1584 0, 1585 0, 1586 update.w, 1587 update.h, 1588 this->is_32bit? GL_RGBA : GL_RGB, 1589#ifdef GL_VERSION_1_2 1590 this->is_32bit ? GL_UNSIGNED_BYTE : GL_UNSIGNED_SHORT_5_6_5, 1591#else 1592 GL_UNSIGNED_BYTE, 1593#endif 1594 (Uint8 *)this->screen->pixels + 1595 this->screen->format->BytesPerPixel * update.x + 1596 update.y * this->screen->pitch ); 1597 1598 this->glFlush(); 1599 /* 1600 * Note the parens around the function name: 1601 * This is because some OpenGL implementations define glTexCoord etc 1602 * as macros, and we don't want them expanded here. 1603 */ 1604 this->glBegin(GL_TRIANGLE_STRIP); 1605 (this->glTexCoord2f)( 0.0, 0.0 ); 1606 (this->glVertex2i)( update.x, update.y ); 1607 (this->glTexCoord2f)( (float)(update.w / 256.0), 0.0 ); 1608 (this->glVertex2i)( update.x + update.w, update.y ); 1609 (this->glTexCoord2f)( 0.0, (float)(update.h / 256.0) ); 1610 (this->glVertex2i)( update.x, update.y + update.h ); 1611 (this->glTexCoord2f)( (float)(update.w / 256.0), (float)(update.h / 256.0) ); 1612 (this->glVertex2i)( update.x + update.w , update.y + update.h ); 1613 this->glEnd(); 1614 1615 tmp.x += 256; 1616 tmp.w -= 256; 1617 } 1618 tmp.y += 256; 1619 tmp.h -= 256; 1620 } 1621 } 1622#endif 1623} 1624 1625/* Lock == save current state */ 1626void SDL_GL_Lock() 1627{ 1628#if SDL_VIDEO_OPENGL 1629 lock_count--; 1630 if (lock_count==-1) 1631 { 1632 SDL_VideoDevice *this = current_video; 1633 1634 this->glPushAttrib( GL_ALL_ATTRIB_BITS ); /* TODO: narrow range of what is saved */ 1635#ifdef GL_CLIENT_PIXEL_STORE_BIT 1636 this->glPushClientAttrib( GL_CLIENT_PIXEL_STORE_BIT ); 1637#endif 1638 1639 this->glEnable(GL_TEXTURE_2D); 1640 this->glEnable(GL_BLEND); 1641 this->glDisable(GL_FOG); 1642 this->glDisable(GL_ALPHA_TEST); 1643 this->glDisable(GL_DEPTH_TEST); 1644 this->glDisable(GL_SCISSOR_TEST); 1645 this->glDisable(GL_STENCIL_TEST); 1646 this->glDisable(GL_CULL_FACE); 1647 1648 this->glBindTexture( GL_TEXTURE_2D, this->texture ); 1649 this->glTexEnvf( GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE ); 1650 this->glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST ); 1651 this->glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST ); 1652 this->glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT ); 1653 this->glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT ); 1654 1655 this->glPixelStorei( GL_UNPACK_ROW_LENGTH, this->screen->pitch / this->screen->format->BytesPerPixel ); 1656 this->glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA); 1657 (this->glColor4f)(1.0, 1.0, 1.0, 1.0); /* Solaris workaround */ 1658 1659 this->glViewport(0, 0, this->screen->w, this->screen->h); 1660 this->glMatrixMode(GL_PROJECTION); 1661 this->glPushMatrix(); 1662 this->glLoadIdentity(); 1663 1664 this->glOrtho(0.0, (GLdouble) this->screen->w, (GLdouble) this->screen->h, 0.0, 0.0, 1.0); 1665 1666 this->glMatrixMode(GL_MODELVIEW); 1667 this->glPushMatrix(); 1668 this->glLoadIdentity(); 1669 } 1670#endif 1671} 1672 1673/* Unlock == restore saved state */ 1674void SDL_GL_Unlock() 1675{ 1676#if SDL_VIDEO_OPENGL 1677 lock_count++; 1678 if (lock_count==0) 1679 { 1680 SDL_VideoDevice *this = current_video; 1681 1682 this->glPopMatrix(); 1683 this->glMatrixMode(GL_PROJECTION); 1684 this->glPopMatrix(); 1685 1686 this->glPopClientAttrib(); 1687 this->glPopAttrib(); 1688 } 1689#endif 1690} 1691 1692#if SDL_AUDIO_DRIVER_PULSE 1693void SDL_Audio_SetCaption(const char *caption); 1694#endif 1695 1696/* 1697 * Sets/Gets the title and icon text of the display window, if any. 1698 */ 1699void SDL_WM_SetCaption (const char *title, const char *icon) 1700{ 1701 SDL_VideoDevice *video = current_video; 1702 SDL_VideoDevice *this = current_video; 1703 1704 if ( video ) { 1705 if ( title ) { 1706 if ( video->wm_title ) { 1707 SDL_free(video->wm_title); 1708 } 1709 video->wm_title = SDL_strdup(title); 1710 } 1711 if ( icon ) { 1712 if ( video->wm_icon ) { 1713 SDL_free(video->wm_icon); 1714 } 1715 video->wm_icon = SDL_strdup(icon); 1716 } 1717 if ( (title || icon) && (video->SetCaption != NULL) ) { 1718 video->SetCaption(this, video->wm_title,video->wm_icon); 1719 } 1720 } 1721 1722#if SDL_AUDIO_DRIVER_PULSE 1723 /* PulseAudio can make use of this information. */ 1724 SDL_Audio_SetCaption(title); 1725#endif 1726} 1727 1728void SDL_WM_GetCaption (char **title, char **icon) 1729{ 1730 SDL_VideoDevice *video = current_video; 1731 1732 if ( video ) { 1733 if ( title ) { 1734 *title = video->wm_title; 1735 } 1736 if ( icon ) { 1737 *icon = video->wm_icon; 1738 } 1739 } 1740} 1741 1742/* Utility function used by SDL_WM_SetIcon(); 1743 * flags & 1 for color key, flags & 2 for alpha channel. */ 1744static void CreateMaskFromColorKeyOrAlpha(SDL_Surface *icon, Uint8 *mask, int flags) 1745{ 1746 int x, y; 1747 Uint32 colorkey; 1748#define SET_MASKBIT(icon, x, y, mask) \ 1749 mask[(y*((icon->w+7)/8))+(x/8)] &= ~(0x01<<(7-(x%8))) 1750 1751 colorkey = icon->format->colorkey; 1752 switch (icon->format->BytesPerPixel) { 1753 case 1: { Uint8 *pixels; 1754 for ( y=0; y<icon->h; ++y ) { 1755 pixels = (Uint8 *)icon->pixels + y*icon->pitch; 1756 for ( x=0; x<icon->w; ++x ) { 1757 if ( *pixels++ == colorkey ) { 1758 SET_MASKBIT(icon, x, y, mask); 1759 } 1760 } 1761 } 1762 } 1763 break; 1764 1765 case 2: { Uint16 *pixels; 1766 for ( y=0; y<icon->h; ++y ) { 1767 pixels = (Uint16 *)icon->pixels + 1768 y*icon->pitch/2; 1769 for ( x=0; x<icon->w; ++x ) { 1770 if ( (flags & 1) && *pixels == colorkey ) { 1771 SET_MASKBIT(icon, x, y, mask); 1772 } else if((flags & 2) && (*pixels & icon->format->Amask) == 0) { 1773 SET_MASKBIT(icon, x, y, mask); 1774 } 1775 pixels++; 1776 } 1777 } 1778 } 1779 break; 1780 1781 case 4: { Uint32 *pixels; 1782 for ( y=0; y<icon->h; ++y ) { 1783 pixels = (Uint32 *)icon->pixels + 1784 y*icon->pitch/4; 1785 for ( x=0; x<icon->w; ++x ) { 1786 if ( (flags & 1) && *pixels == colorkey ) { 1787 SET_MASKBIT(icon, x, y, mask); 1788 } else if((flags & 2) && (*pixels & icon->format->Amask) == 0) { 1789 SET_MASKBIT(icon, x, y, mask); 1790 } 1791 pixels++; 1792 } 1793 } 1794 } 1795 break; 1796 } 1797} 1798 1799/* 1800 * Sets the window manager icon for the display window. 1801 */ 1802void SDL_WM_SetIcon (SDL_Surface *icon, Uint8 *mask) 1803{ 1804 SDL_VideoDevice *video = current_video; 1805 SDL_VideoDevice *this = current_video; 1806 1807 if ( icon && video->SetIcon ) { 1808 /* Generate a mask if necessary, and create the icon! */ 1809 if ( mask == NULL ) { 1810 int mask_len = icon->h*(icon->w+7)/8; 1811 int flags = 0; 1812 mask = (Uint8 *)SDL_malloc(mask_len); 1813 if ( mask == NULL ) { 1814 return; 1815 } 1816 SDL_memset(mask, ~0, mask_len); 1817 if ( icon->flags & SDL_SRCCOLORKEY ) flags |= 1; 1818 if ( icon->flags & SDL_SRCALPHA ) flags |= 2; 1819 if( flags ) { 1820 CreateMaskFromColorKeyOrAlpha(icon, mask, flags); 1821 } 1822 video->SetIcon(video, icon, mask); 1823 SDL_free(mask); 1824 } else { 1825 video->SetIcon(this, icon, mask); 1826 } 1827 } 1828} 1829 1830/* 1831 * Grab or ungrab the keyboard and mouse input. 1832 * This function returns the final grab mode after calling the 1833 * driver dependent function. 1834 */ 1835static SDL_GrabMode SDL_WM_GrabInputRaw(SDL_GrabMode mode) 1836{ 1837 SDL_VideoDevice *video = current_video; 1838 SDL_VideoDevice *this = current_video; 1839 1840 /* Only do something if we have support for grabs */ 1841 if ( video->GrabInput == NULL ) { 1842 return(video->input_grab); 1843 } 1844 1845 /* If the final grab mode if off, only then do we actually grab */ 1846#ifdef DEBUG_GRAB 1847 printf("SDL_WM_GrabInputRaw(%d) ... ", mode); 1848#endif 1849 if ( mode == SDL_GRAB_OFF ) { 1850 if ( video->input_grab != SDL_GRAB_OFF ) { 1851 mode = video->GrabInput(this, mode); 1852 } 1853 } else { 1854 if ( video->input_grab == SDL_GRAB_OFF ) { 1855 mode = video->GrabInput(this, mode); 1856 } 1857 } 1858 if ( mode != video->input_grab ) { 1859 video->input_grab = mode; 1860 if ( video->CheckMouseMode ) { 1861 video->CheckMouseMode(this); 1862 } 1863 } 1864#ifdef DEBUG_GRAB 1865 printf("Final mode %d\n", video->input_grab); 1866#endif 1867 1868 /* Return the final grab state */ 1869 if ( mode >= SDL_GRAB_FULLSCREEN ) { 1870 mode -= SDL_GRAB_FULLSCREEN; 1871 } 1872 return(mode); 1873} 1874SDL_GrabMode SDL_WM_GrabInput(SDL_GrabMode mode) 1875{ 1876 SDL_VideoDevice *video = current_video; 1877 1878 /* If the video isn't initialized yet, we can't do anything */ 1879 if ( ! video ) { 1880 return SDL_GRAB_OFF; 1881 } 1882 1883 /* Return the current mode on query */ 1884 if ( mode == SDL_GRAB_QUERY ) { 1885 mode = video->input_grab; 1886 if ( mode >= SDL_GRAB_FULLSCREEN ) { 1887 mode -= SDL_GRAB_FULLSCREEN; 1888 } 1889 return(mode); 1890 } 1891 1892#ifdef DEBUG_GRAB 1893 printf("SDL_WM_GrabInput(%d) ... ", mode); 1894#endif 1895 /* If the video surface is fullscreen, we always grab */ 1896 if ( mode >= SDL_GRAB_FULLSCREEN ) { 1897 mode -= SDL_GRAB_FULLSCREEN; 1898 } 1899 if ( SDL_VideoSurface && (SDL_VideoSurface->flags & SDL_FULLSCREEN) ) { 1900 mode += SDL_GRAB_FULLSCREEN; 1901 } 1902 return(SDL_WM_GrabInputRaw(mode)); 1903} 1904static SDL_GrabMode SDL_WM_GrabInputOff(void) 1905{ 1906 SDL_GrabMode mode; 1907 1908 /* First query the current grab state */ 1909 mode = SDL_WM_GrabInput(SDL_GRAB_QUERY); 1910 1911 /* Now explicitly turn off input grab */ 1912 SDL_WM_GrabInputRaw(SDL_GRAB_OFF); 1913 1914 /* Return the old state */ 1915 return(mode); 1916} 1917 1918/* 1919 * Iconify the window in window managed environments. 1920 * A successful iconification will result in an SDL_APPACTIVE loss event. 1921 */ 1922int SDL_WM_IconifyWindow(void) 1923{ 1924 SDL_VideoDevice *video = current_video; 1925 SDL_VideoDevice *this = current_video; 1926 int retval; 1927 1928 retval = 0; 1929 if ( video->IconifyWindow ) { 1930 retval = video->IconifyWindow(this); 1931 } 1932 return(retval); 1933} 1934 1935/* 1936 * Toggle fullscreen mode 1937 */ 1938int SDL_WM_ToggleFullScreen(SDL_Surface *surface) 1939{ 1940 SDL_VideoDevice *video = current_video; 1941 SDL_VideoDevice *this = current_video; 1942 int toggled; 1943 1944 toggled = 0; 1945 if ( SDL_PublicSurface && (surface == SDL_PublicSurface) && 1946 video->ToggleFullScreen ) { 1947 if ( surface->flags & SDL_FULLSCREEN ) { 1948 toggled = video->ToggleFullScreen(this, 0); 1949 if ( toggled ) { 1950 SDL_VideoSurface->flags &= ~SDL_FULLSCREEN; 1951 SDL_PublicSurface->flags &= ~SDL_FULLSCREEN; 1952 } 1953 } else { 1954 toggled = video->ToggleFullScreen(this, 1); 1955 if ( toggled ) { 1956 SDL_VideoSurface->flags |= SDL_FULLSCREEN; 1957 SDL_PublicSurface->flags |= SDL_FULLSCREEN; 1958 } 1959 } 1960 /* Double-check the grab state inside SDL_WM_GrabInput() */ 1961 if ( toggled ) { 1962 SDL_WM_GrabInput(video->input_grab); 1963 } 1964 } 1965 return(toggled); 1966} 1967 1968/* 1969 * Set window position 1970 */ 1971void SDL_WM_SetPos(int x, int y) 1972{ 1973 SDL_VideoDevice* video = current_video; 1974 1975 if (video && video->SetWindowPos) 1976 video->SetWindowPos(video, x, y); 1977} 1978 1979/* 1980 * Get window position 1981 */ 1982void SDL_WM_GetPos(int *px, int *py) 1983{ 1984 SDL_VideoDevice* video = current_video; 1985 1986 if (video && video->GetWindowPos) 1987 video->GetWindowPos(video, px, py); 1988 else { 1989 *px = 100; 1990 *py = 100; 1991 } 1992} 1993 1994int SDL_WM_IsFullyVisible( int recenter ) 1995{ 1996 int result = 1; 1997 1998 SDL_VideoDevice* video = current_video; 1999 2000 if (video && video->IsWindowVisible) { 2001 result = video->IsWindowVisible(video, recenter); 2002 } 2003 return result; 2004} 2005 2006int SDL_WM_GetMonitorDPI( int *xDpi, int *yDpi ) 2007{ 2008 int result = -1; 2009 SDL_VideoDevice* video = current_video; 2010 2011 if (video && video->GetMonitorDPI) { 2012 result = video->GetMonitorDPI(video, xDpi, yDpi); 2013 } 2014 return result; 2015} 2016 2017int SDL_WM_GetMonitorRect( SDL_Rect *rect ) 2018{ 2019 int result = -1; 2020 SDL_VideoDevice* video = current_video; 2021 2022 if (video && video->GetMonitorRect) { 2023 result = video->GetMonitorRect(video, rect); 2024 } 2025 return result; 2026} 2027 2028/* 2029 * Get some platform dependent window manager information 2030 */ 2031int SDL_GetWMInfo (SDL_SysWMinfo *info) 2032{ 2033 SDL_VideoDevice *video = current_video; 2034 SDL_VideoDevice *this = current_video; 2035 2036 if ( video && video->GetWMInfo ) { 2037 return(video->GetWMInfo(this, info)); 2038 } else { 2039 return(0); 2040 } 2041} 2042