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authorFranklin Wei <git@fwei.tk>2017-01-21 15:18:31 -0500
committerFranklin Wei <git@fwei.tk>2017-12-23 21:01:26 -0500
commita855d6202536ff28e5aae4f22a0f31d8f5b325d0 (patch)
tree8c75f224dd64ed360505afa8843d016b0d75000b /apps/plugins/sdl/src/video/SDL_video.c
parent01c6dcf6c7b9bb1ad2fa0450f99bacc5f3d3e04b (diff)
downloadrockbox-a855d6202536ff28e5aae4f22a0f31d8f5b325d0.tar.gz
rockbox-a855d6202536ff28e5aae4f22a0f31d8f5b325d0.zip
Port of Duke Nukem 3D
This ports Fabien Sanglard's Chocolate Duke to run on a version of SDL for Rockbox. Change-Id: I8f2c4c78af19de10c1633ed7bb7a997b43256dd9
Diffstat (limited to 'apps/plugins/sdl/src/video/SDL_video.c')
-rw-r--r--apps/plugins/sdl/src/video/SDL_video.c1978
1 files changed, 1978 insertions, 0 deletions
diff --git a/apps/plugins/sdl/src/video/SDL_video.c b/apps/plugins/sdl/src/video/SDL_video.c
new file mode 100644
index 0000000000..2648d1fb3c
--- /dev/null
+++ b/apps/plugins/sdl/src/video/SDL_video.c
@@ -0,0 +1,1978 @@
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#if SDL_VIDEO_DRIVER_ROCKBOX
133 &ROCKBOX_bootstrap,
134#endif
135 NULL
136};
137
138SDL_VideoDevice *current_video = NULL;
139
140/* Various local functions */
141int SDL_VideoInit(const char *driver_name, Uint32 flags);
142void SDL_VideoQuit(void);
143void SDL_GL_UpdateRectsLock(SDL_VideoDevice* this, int numrects, SDL_Rect* rects);
144
145static SDL_GrabMode SDL_WM_GrabInputOff(void);
146#if SDL_VIDEO_OPENGL
147static int lock_count = 0;
148#endif
149
150
151/*
152 * Initialize the video and event subsystems -- determine native pixel format
153 */
154int 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
290char *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 */
302SDL_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 */
316const SDL_VideoInfo *SDL_GetVideoInfo(void)
317{
318 const SDL_VideoInfo *info;
319
320 info = NULL;
321 if ( current_video ) {
322 info = &current_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 */
334SDL_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 */
358static 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
376int 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 */
435static 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 */
505static 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 */
523static 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#ifdef WIN32
580 extern int sysevents_mouse_pressed;
581#endif
582
583/*
584 * Set the requested video mode, allocating a shadow buffer if necessary.
585 */
586SDL_Surface * SDL_SetVideoMode (int width, int height, int bpp, Uint32 flags)
587{
588 SDL_VideoDevice *video, *this;
589 SDL_Surface *prev_mode, *mode;
590 int video_w;
591 int video_h;
592 int video_bpp;
593 int is_opengl;
594 SDL_GrabMode saved_grab;
595
596 #ifdef WIN32
597 sysevents_mouse_pressed = 0;
598 #endif
599
600 /* Start up the video driver, if necessary..
601 WARNING: This is the only function protected this way!
602 */
603 if ( ! current_video ) {
604 if ( SDL_Init(SDL_INIT_VIDEO|SDL_INIT_NOPARACHUTE) < 0 ) {
605 return(NULL);
606 }
607 }
608 this = video = current_video;
609
610 /* Default to the current width and height */
611 if ( width == 0 ) {
612 width = video->info.current_w;
613 }
614 if ( height == 0 ) {
615 height = video->info.current_h;
616 }
617 /* Default to the current video bpp */
618 if ( bpp == 0 ) {
619 flags |= SDL_ANYFORMAT;
620 bpp = SDL_VideoSurface->format->BitsPerPixel;
621 }
622
623 /* Get a good video mode, the closest one possible */
624 video_w = width;
625 video_h = height;
626 video_bpp = bpp;
627 if ( ! SDL_GetVideoMode(&video_w, &video_h, &video_bpp, flags) ) {
628 return(NULL);
629 }
630
631 /* Check the requested flags */
632 /* There's no palette in > 8 bits-per-pixel mode */
633 if ( video_bpp > 8 ) {
634 flags &= ~SDL_HWPALETTE;
635 }
636#if 0
637 if ( (flags&SDL_FULLSCREEN) != SDL_FULLSCREEN ) {
638 /* There's no windowed double-buffering */
639 flags &= ~SDL_DOUBLEBUF;
640 }
641#endif
642 if ( (flags&SDL_DOUBLEBUF) == SDL_DOUBLEBUF ) {
643 /* Use hardware surfaces when double-buffering */
644 flags |= SDL_HWSURFACE;
645 }
646
647 is_opengl = ( ( flags & SDL_OPENGL ) == SDL_OPENGL );
648 if ( is_opengl ) {
649 /* These flags are for 2D video modes only */
650 flags &= ~(SDL_HWSURFACE|SDL_DOUBLEBUF);
651 }
652 /* Reset the keyboard here so event callbacks can run */
653 SDL_ResetKeyboard();
654 SDL_ResetMouse();
655 SDL_SetMouseRange(width, height);
656 SDL_cursorstate &= ~CURSOR_USINGSW;
657
658 /* Clean up any previous video mode */
659 if ( SDL_PublicSurface != NULL ) {
660 SDL_PublicSurface = NULL;
661 }
662 if ( SDL_ShadowSurface != NULL ) {
663 SDL_Surface *ready_to_go;
664 ready_to_go = SDL_ShadowSurface;
665 SDL_ShadowSurface = NULL;
666 SDL_FreeSurface(ready_to_go);
667 }
668 if ( video->physpal ) {
669 SDL_free(video->physpal->colors);
670 SDL_free(video->physpal);
671 video->physpal = NULL;
672 }
673 if( video->gammacols) {
674 SDL_free(video->gammacols);
675 video->gammacols = NULL;
676 }
677 /* Save the previous grab state and turn off grab for mode switch */
678 saved_grab = SDL_WM_GrabInputOff();
679
680 /* Try to set the video mode, along with offset and clipping */
681 prev_mode = SDL_VideoSurface;
682 SDL_LockCursor();
683 SDL_VideoSurface = NULL; /* In case it's freed by driver */
684 mode = video->SetVideoMode(this, prev_mode,video_w,video_h,video_bpp,flags);
685
686 if ( mode ) { /* Prevent resize events from mode change */
687 /* But not on OS/2 */
688#ifndef __OS2__
689 SDL_PrivateResize(mode->w, mode->h);
690#endif
691
692 /* Sam - If we asked for OpenGL mode, and didn't get it, fail */
693 if ( is_opengl && !(mode->flags & SDL_OPENGL) ) {
694 mode = NULL;
695 SDL_SetError("OpenGL not available");
696 }
697 }
698 /*
699 * rcg11292000
700 * If you try to set an SDL_OPENGL surface, and fail to find a
701 * matching visual, then the next call to SDL_SetVideoMode()
702 * will segfault, since we no longer point to a dummy surface,
703 * but rather NULL.
704 * Sam 11/29/00
705 * WARNING, we need to make sure that the previous mode hasn't
706 * already been freed by the video driver. What do we do in
707 * that case? Should we call SDL_VideoInit() again?
708 */
709 SDL_VideoSurface = (mode != NULL) ? mode : prev_mode;
710 if ( (mode != NULL) && (!is_opengl) ) {
711 /* Sanity check */
712 if ( (mode->w < width) || (mode->h < height) ) {
713 SDL_SetError("Video mode smaller than requested");
714 return(NULL);
715 }
716
717 /* If we have a palettized surface, create a default palette */
718 if ( mode->format->palette ) {
719 SDL_PixelFormat *vf = mode->format;
720 SDL_DitherColors(vf->palette->colors, vf->BitsPerPixel);
721 video->SetColors(this, 0, vf->palette->ncolors,
722 vf->palette->colors);
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 /* Now adjust the offsets to match the desired mode */
731 video->offset_x = (mode->w-width)/2;
732 video->offset_y = (mode->h-height)/2;
733 mode->offset = video->offset_y*mode->pitch +
734 video->offset_x*mode->format->BytesPerPixel;
735#ifdef DEBUG_VIDEO
736 fprintf(stderr,
737 "Requested mode: %dx%dx%d, obtained mode %dx%dx%d (offset %d)\n",
738 width, height, bpp,
739 mode->w, mode->h, mode->format->BitsPerPixel, mode->offset);
740#endif
741 mode->w = width;
742 mode->h = height;
743 SDL_SetClipRect(mode, NULL);
744 }
745 SDL_ResetCursor();
746 SDL_UnlockCursor();
747
748 /* If we failed setting a video mode, return NULL... (Uh Oh!) */
749 if ( mode == NULL ) {
750 return(NULL);
751 }
752
753 /* If there is no window manager, set the SDL_NOFRAME flag */
754 if ( ! video->info.wm_available ) {
755 mode->flags |= SDL_NOFRAME;
756 }
757
758 /* Reset the mouse cursor and grab for new video mode */
759 SDL_SetCursor(NULL);
760
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
1693void SDL_Audio_SetCaption(const char *caption);
1694
1695/*
1696 * Sets/Gets the title and icon text of the display window, if any.
1697 */
1698void SDL_WM_SetCaption (const char *title, const char *icon)
1699{
1700 SDL_VideoDevice *video = current_video;
1701 SDL_VideoDevice *this = current_video;
1702
1703 if ( video ) {
1704 if ( title ) {
1705 if ( video->wm_title ) {
1706 SDL_free(video->wm_title);
1707 }
1708 video->wm_title = SDL_strdup(title);
1709 }
1710 if ( icon ) {
1711 if ( video->wm_icon ) {
1712 SDL_free(video->wm_icon);
1713 }
1714 video->wm_icon = SDL_strdup(icon);
1715 }
1716 if ( (title || icon) && (video->SetCaption != NULL) ) {
1717 video->SetCaption(this, video->wm_title,video->wm_icon);
1718 }
1719 }
1720
1721 /* PulseAudio can make use of this information. */
1722 SDL_Audio_SetCaption(title);
1723}
1724
1725void SDL_WM_GetCaption (char **title, char **icon)
1726{
1727 SDL_VideoDevice *video = current_video;
1728
1729 if ( video ) {
1730 if ( title ) {
1731 *title = video->wm_title;
1732 }
1733 if ( icon ) {
1734 *icon = video->wm_icon;
1735 }
1736 }
1737}
1738
1739/* Utility function used by SDL_WM_SetIcon();
1740 * flags & 1 for color key, flags & 2 for alpha channel. */
1741static void CreateMaskFromColorKeyOrAlpha(SDL_Surface *icon, Uint8 *mask, int flags)
1742{
1743 int x, y;
1744 Uint32 colorkey;
1745#define SET_MASKBIT(icon, x, y, mask) \
1746 mask[(y*((icon->w+7)/8))+(x/8)] &= ~(0x01<<(7-(x%8)))
1747
1748 colorkey = icon->format->colorkey;
1749 switch (icon->format->BytesPerPixel) {
1750 case 1: { Uint8 *pixels;
1751 for ( y=0; y<icon->h; ++y ) {
1752 pixels = (Uint8 *)icon->pixels + y*icon->pitch;
1753 for ( x=0; x<icon->w; ++x ) {
1754 if ( *pixels++ == colorkey ) {
1755 SET_MASKBIT(icon, x, y, mask);
1756 }
1757 }
1758 }
1759 }
1760 break;
1761
1762 case 2: { Uint16 *pixels;
1763 for ( y=0; y<icon->h; ++y ) {
1764 pixels = (Uint16 *)icon->pixels +
1765 y*icon->pitch/2;
1766 for ( x=0; x<icon->w; ++x ) {
1767 if ( (flags & 1) && *pixels == colorkey ) {
1768 SET_MASKBIT(icon, x, y, mask);
1769 } else if((flags & 2) && (*pixels & icon->format->Amask) == 0) {
1770 SET_MASKBIT(icon, x, y, mask);
1771 }
1772 pixels++;
1773 }
1774 }
1775 }
1776 break;
1777
1778 case 4: { Uint32 *pixels;
1779 for ( y=0; y<icon->h; ++y ) {
1780 pixels = (Uint32 *)icon->pixels +
1781 y*icon->pitch/4;
1782 for ( x=0; x<icon->w; ++x ) {
1783 if ( (flags & 1) && *pixels == colorkey ) {
1784 SET_MASKBIT(icon, x, y, mask);
1785 } else if((flags & 2) && (*pixels & icon->format->Amask) == 0) {
1786 SET_MASKBIT(icon, x, y, mask);
1787 }
1788 pixels++;
1789 }
1790 }
1791 }
1792 break;
1793 }
1794}
1795
1796/*
1797 * Sets the window manager icon for the display window.
1798 */
1799void SDL_WM_SetIcon (SDL_Surface *icon, Uint8 *mask)
1800{
1801 SDL_VideoDevice *video = current_video;
1802 SDL_VideoDevice *this = current_video;
1803
1804 if ( icon && video->SetIcon ) {
1805 /* Generate a mask if necessary, and create the icon! */
1806 if ( mask == NULL ) {
1807 int mask_len = icon->h*(icon->w+7)/8;
1808 int flags = 0;
1809 mask = (Uint8 *)SDL_malloc(mask_len);
1810 if ( mask == NULL ) {
1811 return;
1812 }
1813 SDL_memset(mask, ~0, mask_len);
1814 if ( icon->flags & SDL_SRCCOLORKEY ) flags |= 1;
1815 if ( icon->flags & SDL_SRCALPHA ) flags |= 2;
1816 if( flags ) {
1817 CreateMaskFromColorKeyOrAlpha(icon, mask, flags);
1818 }
1819 video->SetIcon(video, icon, mask);
1820 SDL_free(mask);
1821 } else {
1822 video->SetIcon(this, icon, mask);
1823 }
1824 }
1825}
1826
1827/*
1828 * Grab or ungrab the keyboard and mouse input.
1829 * This function returns the final grab mode after calling the
1830 * driver dependent function.
1831 */
1832static SDL_GrabMode SDL_WM_GrabInputRaw(SDL_GrabMode mode)
1833{
1834 SDL_VideoDevice *video = current_video;
1835 SDL_VideoDevice *this = current_video;
1836
1837 /* Only do something if we have support for grabs */
1838 if ( video->GrabInput == NULL ) {
1839 return(video->input_grab);
1840 }
1841
1842 /* If the final grab mode if off, only then do we actually grab */
1843#ifdef DEBUG_GRAB
1844 printf("SDL_WM_GrabInputRaw(%d) ... ", mode);
1845#endif
1846 if ( mode == SDL_GRAB_OFF ) {
1847 if ( video->input_grab != SDL_GRAB_OFF ) {
1848 mode = video->GrabInput(this, mode);
1849 }
1850 } else {
1851 if ( video->input_grab == SDL_GRAB_OFF ) {
1852 mode = video->GrabInput(this, mode);
1853 }
1854 }
1855 if ( mode != video->input_grab ) {
1856 video->input_grab = mode;
1857 if ( video->CheckMouseMode ) {
1858 video->CheckMouseMode(this);
1859 }
1860 }
1861#ifdef DEBUG_GRAB
1862 printf("Final mode %d\n", video->input_grab);
1863#endif
1864
1865 /* Return the final grab state */
1866 if ( mode >= SDL_GRAB_FULLSCREEN ) {
1867 mode -= SDL_GRAB_FULLSCREEN;
1868 }
1869 return(mode);
1870}
1871SDL_GrabMode SDL_WM_GrabInput(SDL_GrabMode mode)
1872{
1873 SDL_VideoDevice *video = current_video;
1874
1875 /* If the video isn't initialized yet, we can't do anything */
1876 if ( ! video ) {
1877 return SDL_GRAB_OFF;
1878 }
1879
1880 /* Return the current mode on query */
1881 if ( mode == SDL_GRAB_QUERY ) {
1882 mode = video->input_grab;
1883 if ( mode >= SDL_GRAB_FULLSCREEN ) {
1884 mode -= SDL_GRAB_FULLSCREEN;
1885 }
1886 return(mode);
1887 }
1888
1889#ifdef DEBUG_GRAB
1890 printf("SDL_WM_GrabInput(%d) ... ", mode);
1891#endif
1892 /* If the video surface is fullscreen, we always grab */
1893 if ( mode >= SDL_GRAB_FULLSCREEN ) {
1894 mode -= SDL_GRAB_FULLSCREEN;
1895 }
1896 if ( SDL_VideoSurface && (SDL_VideoSurface->flags & SDL_FULLSCREEN) ) {
1897 mode += SDL_GRAB_FULLSCREEN;
1898 }
1899 return(SDL_WM_GrabInputRaw(mode));
1900}
1901static SDL_GrabMode SDL_WM_GrabInputOff(void)
1902{
1903 SDL_GrabMode mode;
1904
1905 /* First query the current grab state */
1906 mode = SDL_WM_GrabInput(SDL_GRAB_QUERY);
1907
1908 /* Now explicitly turn off input grab */
1909 SDL_WM_GrabInputRaw(SDL_GRAB_OFF);
1910
1911 /* Return the old state */
1912 return(mode);
1913}
1914
1915/*
1916 * Iconify the window in window managed environments.
1917 * A successful iconification will result in an SDL_APPACTIVE loss event.
1918 */
1919int SDL_WM_IconifyWindow(void)
1920{
1921 SDL_VideoDevice *video = current_video;
1922 SDL_VideoDevice *this = current_video;
1923 int retval;
1924
1925 retval = 0;
1926 if ( video->IconifyWindow ) {
1927 retval = video->IconifyWindow(this);
1928 }
1929 return(retval);
1930}
1931
1932/*
1933 * Toggle fullscreen mode
1934 */
1935int SDL_WM_ToggleFullScreen(SDL_Surface *surface)
1936{
1937 SDL_VideoDevice *video = current_video;
1938 SDL_VideoDevice *this = current_video;
1939 int toggled;
1940
1941 toggled = 0;
1942 if ( SDL_PublicSurface && (surface == SDL_PublicSurface) &&
1943 video->ToggleFullScreen ) {
1944 if ( surface->flags & SDL_FULLSCREEN ) {
1945 toggled = video->ToggleFullScreen(this, 0);
1946 if ( toggled ) {
1947 SDL_VideoSurface->flags &= ~SDL_FULLSCREEN;
1948 SDL_PublicSurface->flags &= ~SDL_FULLSCREEN;
1949 }
1950 } else {
1951 toggled = video->ToggleFullScreen(this, 1);
1952 if ( toggled ) {
1953 SDL_VideoSurface->flags |= SDL_FULLSCREEN;
1954 SDL_PublicSurface->flags |= SDL_FULLSCREEN;
1955 }
1956 }
1957 /* Double-check the grab state inside SDL_WM_GrabInput() */
1958 if ( toggled ) {
1959 SDL_WM_GrabInput(video->input_grab);
1960 }
1961 }
1962 return(toggled);
1963}
1964
1965/*
1966 * Get some platform dependent window manager information
1967 */
1968int SDL_GetWMInfo (SDL_SysWMinfo *info)
1969{
1970 SDL_VideoDevice *video = current_video;
1971 SDL_VideoDevice *this = current_video;
1972
1973 if ( video && video->GetWMInfo ) {
1974 return(video->GetWMInfo(this, info));
1975 } else {
1976 return(0);
1977 }
1978}
generated by cgit v1.2.3 (git 2.39.1) at 2024-10-03 04:33:25 +0000