e14743d1 |
1 | /* |
2 | SDL - Simple DirectMedia Layer |
3 | Copyright (C) 1997-2009 Sam Lantinga |
4 | |
5 | This library is free software; you can redistribute it and/or |
6 | modify it under the terms of the GNU Lesser General Public |
7 | License as published by the Free Software Foundation; either |
8 | version 2.1 of the License, or (at your option) any later version. |
9 | |
10 | This library is distributed in the hope that it will be useful, |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
13 | Lesser General Public License for more details. |
14 | |
15 | You should have received a copy of the GNU Lesser General Public |
16 | License along with this library; if not, write to the Free Software |
17 | Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
18 | |
19 | Sam Lantinga |
20 | slouken@libsdl.org |
21 | */ |
22 | #include "SDL_config.h" |
23 | |
24 | /* The high-level video driver subsystem */ |
25 | |
26 | #include "SDL.h" |
27 | #include "SDL_sysvideo.h" |
28 | #include "SDL_blit.h" |
29 | #include "SDL_pixels_c.h" |
30 | #include "SDL_cursor_c.h" |
31 | #include "../events/SDL_sysevents.h" |
32 | #include "../events/SDL_events_c.h" |
33 | |
34 | /* Available video drivers */ |
35 | static VideoBootStrap *bootstrap[] = { |
36 | #if SDL_VIDEO_DRIVER_QUARTZ |
37 | &QZ_bootstrap, |
38 | #endif |
39 | #if SDL_VIDEO_DRIVER_X11 |
40 | &X11_bootstrap, |
41 | #endif |
42 | #if SDL_VIDEO_DRIVER_DGA |
43 | &DGA_bootstrap, |
44 | #endif |
45 | #if SDL_VIDEO_DRIVER_NANOX |
46 | &NX_bootstrap, |
47 | #endif |
48 | #if SDL_VIDEO_DRIVER_IPOD |
49 | &iPod_bootstrap, |
50 | #endif |
51 | #if SDL_VIDEO_DRIVER_QTOPIA |
52 | &Qtopia_bootstrap, |
53 | #endif |
54 | #if SDL_VIDEO_DRIVER_WSCONS |
55 | &WSCONS_bootstrap, |
56 | #endif |
57 | #if SDL_VIDEO_DRIVER_FBCON |
58 | &FBCON_bootstrap, |
59 | #endif |
60 | #if SDL_VIDEO_DRIVER_DIRECTFB |
61 | &DirectFB_bootstrap, |
62 | #endif |
63 | #if SDL_VIDEO_DRIVER_PS2GS |
64 | &PS2GS_bootstrap, |
65 | #endif |
66 | #if SDL_VIDEO_DRIVER_PS3 |
67 | &PS3_bootstrap, |
68 | #endif |
69 | #if SDL_VIDEO_DRIVER_GGI |
70 | &GGI_bootstrap, |
71 | #endif |
72 | #if SDL_VIDEO_DRIVER_VGL |
73 | &VGL_bootstrap, |
74 | #endif |
75 | #if SDL_VIDEO_DRIVER_SVGALIB |
76 | &SVGALIB_bootstrap, |
77 | #endif |
78 | #if SDL_VIDEO_DRIVER_GAPI |
79 | &GAPI_bootstrap, |
80 | #endif |
81 | #if SDL_VIDEO_DRIVER_WINDIB |
82 | &WINDIB_bootstrap, |
83 | #endif |
84 | #if SDL_VIDEO_DRIVER_DDRAW |
85 | &DIRECTX_bootstrap, |
86 | #endif |
87 | #if SDL_VIDEO_DRIVER_BWINDOW |
88 | &BWINDOW_bootstrap, |
89 | #endif |
90 | #if SDL_VIDEO_DRIVER_TOOLBOX |
91 | &TOOLBOX_bootstrap, |
92 | #endif |
93 | #if SDL_VIDEO_DRIVER_DRAWSPROCKET |
94 | &DSp_bootstrap, |
95 | #endif |
96 | #if SDL_VIDEO_DRIVER_PHOTON |
97 | &ph_bootstrap, |
98 | #endif |
99 | #if SDL_VIDEO_DRIVER_EPOC |
100 | &EPOC_bootstrap, |
101 | #endif |
102 | #if SDL_VIDEO_DRIVER_XBIOS |
103 | &XBIOS_bootstrap, |
104 | #endif |
105 | #if SDL_VIDEO_DRIVER_GEM |
106 | &GEM_bootstrap, |
107 | #endif |
108 | #if SDL_VIDEO_DRIVER_PICOGUI |
109 | &PG_bootstrap, |
110 | #endif |
111 | #if SDL_VIDEO_DRIVER_DC |
112 | &DC_bootstrap, |
113 | #endif |
114 | #if SDL_VIDEO_DRIVER_NDS |
115 | &NDS_bootstrap, |
116 | #endif |
117 | #if SDL_VIDEO_DRIVER_RISCOS |
118 | &RISCOS_bootstrap, |
119 | #endif |
120 | #if SDL_VIDEO_DRIVER_OS2FS |
121 | &OS2FSLib_bootstrap, |
122 | #endif |
123 | #if SDL_VIDEO_DRIVER_AALIB |
124 | &AALIB_bootstrap, |
125 | #endif |
126 | #if SDL_VIDEO_DRIVER_CACA |
127 | &CACA_bootstrap, |
128 | #endif |
129 | #if SDL_VIDEO_DRIVER_DUMMY |
130 | &DUMMY_bootstrap, |
131 | #endif |
132 | NULL |
133 | }; |
134 | |
135 | SDL_VideoDevice *current_video = NULL; |
136 | |
137 | /* Various local functions */ |
138 | int SDL_VideoInit(const char *driver_name, Uint32 flags); |
139 | void SDL_VideoQuit(void); |
140 | void SDL_GL_UpdateRectsLock(SDL_VideoDevice* this, int numrects, SDL_Rect* rects); |
141 | |
142 | static SDL_GrabMode SDL_WM_GrabInputOff(void); |
143 | #if SDL_VIDEO_OPENGL |
144 | static int lock_count = 0; |
145 | #endif |
146 | |
147 | |
148 | /* |
149 | * Initialize the video and event subsystems -- determine native pixel format |
150 | */ |
151 | int 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 | |
287 | char *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 | */ |
299 | SDL_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 | */ |
313 | const 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 | */ |
331 | SDL_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 | */ |
355 | static 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 | |
373 | int 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 | */ |
432 | static 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 */ |
502 | static 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 | */ |
520 | static 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 | /* |
577 | * Set the requested video mode, allocating a shadow buffer if necessary. |
578 | */ |
579 | SDL_Surface * SDL_SetVideoMode (int width, int height, int bpp, Uint32 flags) |
580 | { |
581 | SDL_VideoDevice *video, *this; |
582 | SDL_Surface *prev_mode, *mode; |
583 | int video_w; |
584 | int video_h; |
585 | int video_bpp; |
586 | int is_opengl; |
587 | SDL_GrabMode saved_grab; |
588 | |
589 | /* Start up the video driver, if necessary.. |
590 | WARNING: This is the only function protected this way! |
591 | */ |
592 | if ( ! current_video ) { |
593 | if ( SDL_Init(SDL_INIT_VIDEO|SDL_INIT_NOPARACHUTE) < 0 ) { |
594 | return(NULL); |
595 | } |
596 | } |
597 | this = video = current_video; |
598 | |
599 | /* Default to the current width and height */ |
600 | if ( width == 0 ) { |
601 | width = video->info.current_w; |
602 | } |
603 | if ( height == 0 ) { |
604 | height = video->info.current_h; |
605 | } |
606 | /* Default to the current video bpp */ |
607 | if ( bpp == 0 ) { |
608 | flags |= SDL_ANYFORMAT; |
609 | bpp = SDL_VideoSurface->format->BitsPerPixel; |
610 | } |
611 | |
612 | /* Get a good video mode, the closest one possible */ |
613 | video_w = width; |
614 | video_h = height; |
615 | video_bpp = bpp; |
616 | if ( ! SDL_GetVideoMode(&video_w, &video_h, &video_bpp, flags) ) { |
617 | return(NULL); |
618 | } |
619 | |
620 | /* Check the requested flags */ |
621 | /* There's no palette in > 8 bits-per-pixel mode */ |
622 | if ( video_bpp > 8 ) { |
623 | flags &= ~SDL_HWPALETTE; |
624 | } |
625 | #if 0 |
626 | if ( (flags&SDL_FULLSCREEN) != SDL_FULLSCREEN ) { |
627 | /* There's no windowed double-buffering */ |
628 | flags &= ~SDL_DOUBLEBUF; |
629 | } |
630 | #endif |
631 | if ( (flags&SDL_DOUBLEBUF) == SDL_DOUBLEBUF ) { |
632 | /* Use hardware surfaces when double-buffering */ |
633 | flags |= SDL_HWSURFACE; |
634 | } |
635 | |
636 | is_opengl = ( ( flags & SDL_OPENGL ) == SDL_OPENGL ); |
637 | if ( is_opengl ) { |
638 | /* These flags are for 2D video modes only */ |
639 | flags &= ~(SDL_HWSURFACE|SDL_DOUBLEBUF); |
640 | } |
641 | |
642 | /* Reset the keyboard here so event callbacks can run */ |
643 | SDL_ResetKeyboard(); |
644 | SDL_ResetMouse(); |
645 | SDL_SetMouseRange(width, height); |
646 | SDL_cursorstate &= ~CURSOR_USINGSW; |
647 | |
648 | /* Clean up any previous video mode */ |
649 | if ( SDL_PublicSurface != NULL ) { |
650 | SDL_PublicSurface = NULL; |
651 | } |
652 | if ( SDL_ShadowSurface != NULL ) { |
653 | SDL_Surface *ready_to_go; |
654 | ready_to_go = SDL_ShadowSurface; |
655 | SDL_ShadowSurface = NULL; |
656 | SDL_FreeSurface(ready_to_go); |
657 | } |
658 | if ( video->physpal ) { |
659 | SDL_free(video->physpal->colors); |
660 | SDL_free(video->physpal); |
661 | video->physpal = NULL; |
662 | } |
663 | if( video->gammacols) { |
664 | SDL_free(video->gammacols); |
665 | video->gammacols = NULL; |
666 | } |
667 | |
668 | /* Save the previous grab state and turn off grab for mode switch */ |
669 | saved_grab = SDL_WM_GrabInputOff(); |
670 | |
671 | /* Try to set the video mode, along with offset and clipping */ |
672 | prev_mode = SDL_VideoSurface; |
673 | SDL_LockCursor(); |
674 | SDL_VideoSurface = NULL; /* In case it's freed by driver */ |
675 | mode = video->SetVideoMode(this, prev_mode,video_w,video_h,video_bpp,flags); |
676 | if ( mode ) { /* Prevent resize events from mode change */ |
677 | /* But not on OS/2 */ |
678 | #ifndef __OS2__ |
679 | SDL_PrivateResize(mode->w, mode->h); |
680 | #endif |
681 | |
682 | /* Sam - If we asked for OpenGL mode, and didn't get it, fail */ |
683 | if ( is_opengl && !(mode->flags & SDL_OPENGL) ) { |
684 | mode = NULL; |
685 | SDL_SetError("OpenGL not available"); |
686 | } |
687 | } |
688 | /* |
689 | * rcg11292000 |
690 | * If you try to set an SDL_OPENGL surface, and fail to find a |
691 | * matching visual, then the next call to SDL_SetVideoMode() |
692 | * will segfault, since we no longer point to a dummy surface, |
693 | * but rather NULL. |
694 | * Sam 11/29/00 |
695 | * WARNING, we need to make sure that the previous mode hasn't |
696 | * already been freed by the video driver. What do we do in |
697 | * that case? Should we call SDL_VideoInit() again? |
698 | */ |
699 | SDL_VideoSurface = (mode != NULL) ? mode : prev_mode; |
700 | |
701 | if ( (mode != NULL) && (!is_opengl) ) { |
702 | /* Sanity check */ |
703 | if ( (mode->w < width) || (mode->h < height) ) { |
704 | SDL_SetError("Video mode smaller than requested"); |
705 | return(NULL); |
706 | } |
707 | |
708 | /* If we have a palettized surface, create a default palette */ |
709 | if ( mode->format->palette ) { |
710 | SDL_PixelFormat *vf = mode->format; |
711 | SDL_DitherColors(vf->palette->colors, vf->BitsPerPixel); |
712 | video->SetColors(this, 0, vf->palette->ncolors, |
713 | vf->palette->colors); |
714 | } |
715 | |
716 | /* Clear the surface to black */ |
717 | video->offset_x = 0; |
718 | video->offset_y = 0; |
719 | mode->offset = 0; |
720 | SDL_SetClipRect(mode, NULL); |
721 | SDL_ClearSurface(mode); |
722 | |
723 | /* Now adjust the offsets to match the desired mode */ |
724 | video->offset_x = (mode->w-width)/2; |
725 | video->offset_y = (mode->h-height)/2; |
726 | mode->offset = video->offset_y*mode->pitch + |
727 | video->offset_x*mode->format->BytesPerPixel; |
728 | #ifdef DEBUG_VIDEO |
729 | fprintf(stderr, |
730 | "Requested mode: %dx%dx%d, obtained mode %dx%dx%d (offset %d)\n", |
731 | width, height, bpp, |
732 | mode->w, mode->h, mode->format->BitsPerPixel, mode->offset); |
733 | #endif |
734 | mode->w = width; |
735 | mode->h = height; |
736 | SDL_SetClipRect(mode, NULL); |
737 | } |
738 | SDL_ResetCursor(); |
739 | SDL_UnlockCursor(); |
740 | |
741 | /* If we failed setting a video mode, return NULL... (Uh Oh!) */ |
742 | if ( mode == NULL ) { |
743 | return(NULL); |
744 | } |
745 | |
746 | /* If there is no window manager, set the SDL_NOFRAME flag */ |
747 | if ( ! video->info.wm_available ) { |
748 | mode->flags |= SDL_NOFRAME; |
749 | } |
750 | |
751 | /* Reset the mouse cursor and grab for new video mode */ |
752 | SDL_SetCursor(NULL); |
753 | if ( video->UpdateMouse ) { |
754 | video->UpdateMouse(this); |
755 | } |
756 | SDL_WM_GrabInput(saved_grab); |
757 | SDL_GetRelativeMouseState(NULL, NULL); /* Clear first large delta */ |
758 | |
759 | #if SDL_VIDEO_OPENGL |
760 | /* Load GL symbols (before MakeCurrent, where we need glGetString). */ |
761 | if ( flags & (SDL_OPENGL | SDL_OPENGLBLIT) ) { |
762 | |
763 | #if defined(__QNXNTO__) && (_NTO_VERSION < 630) |
764 | #define __SDL_NOGETPROCADDR__ |
765 | #elif defined(__MINT__) |
766 | #define __SDL_NOGETPROCADDR__ |
767 | #endif |
768 | #ifdef __SDL_NOGETPROCADDR__ |
769 | #define SDL_PROC(ret,func,params) video->func=func; |
770 | #else |
771 | #define SDL_PROC(ret,func,params) \ |
772 | do { \ |
773 | video->func = SDL_GL_GetProcAddress(#func); \ |
774 | if ( ! video->func ) { \ |
775 | SDL_SetError("Couldn't load GL function %s: %s\n", #func, SDL_GetError()); \ |
776 | return(NULL); \ |
777 | } \ |
778 | } while ( 0 ); |
779 | |
780 | #endif /* __SDL_NOGETPROCADDR__ */ |
781 | |
782 | #include "SDL_glfuncs.h" |
783 | #undef SDL_PROC |
784 | } |
785 | #endif /* SDL_VIDEO_OPENGL */ |
786 | |
787 | /* If we're running OpenGL, make the context current */ |
788 | if ( (video->screen->flags & SDL_OPENGL) && |
789 | video->GL_MakeCurrent ) { |
790 | if ( video->GL_MakeCurrent(this) < 0 ) { |
791 | return(NULL); |
792 | } |
793 | } |
794 | |
795 | /* Set up a fake SDL surface for OpenGL "blitting" */ |
796 | if ( (flags & SDL_OPENGLBLIT) == SDL_OPENGLBLIT ) { |
797 | /* Load GL functions for performing the texture updates */ |
798 | #if SDL_VIDEO_OPENGL |
799 | |
800 | /* Create a software surface for blitting */ |
801 | #ifdef GL_VERSION_1_2 |
802 | /* If the implementation either supports the packed pixels |
803 | extension, or implements the core OpenGL 1.2 API, it will |
804 | support the GL_UNSIGNED_SHORT_5_6_5 texture format. |
805 | */ |
806 | if ( (bpp == 16) && |
807 | (SDL_strstr((const char *)video->glGetString(GL_EXTENSIONS), "GL_EXT_packed_pixels") || |
808 | (SDL_atof((const char *)video->glGetString(GL_VERSION)) >= 1.2f)) |
809 | ) { |
810 | video->is_32bit = 0; |
811 | SDL_VideoSurface = SDL_CreateRGBSurface( |
812 | flags, |
813 | width, |
814 | height, |
815 | 16, |
816 | 31 << 11, |
817 | 63 << 5, |
818 | 31, |
819 | 0 |
820 | ); |
821 | } |
822 | else |
823 | #endif /* OpenGL 1.2 */ |
824 | { |
825 | video->is_32bit = 1; |
826 | SDL_VideoSurface = SDL_CreateRGBSurface( |
827 | flags, |
828 | width, |
829 | height, |
830 | 32, |
831 | #if SDL_BYTEORDER == SDL_LIL_ENDIAN |
832 | 0x000000FF, |
833 | 0x0000FF00, |
834 | 0x00FF0000, |
835 | 0xFF000000 |
836 | #else |
837 | 0xFF000000, |
838 | 0x00FF0000, |
839 | 0x0000FF00, |
840 | 0x000000FF |
841 | #endif |
842 | ); |
843 | } |
844 | if ( ! SDL_VideoSurface ) { |
845 | return(NULL); |
846 | } |
847 | SDL_VideoSurface->flags = mode->flags | SDL_OPENGLBLIT; |
848 | |
849 | /* Free the original video mode surface (is this safe?) */ |
850 | SDL_FreeSurface(mode); |
851 | |
852 | /* Set the surface completely opaque & white by default */ |
853 | SDL_memset( SDL_VideoSurface->pixels, 255, SDL_VideoSurface->h * SDL_VideoSurface->pitch ); |
854 | video->glGenTextures( 1, &video->texture ); |
855 | video->glBindTexture( GL_TEXTURE_2D, video->texture ); |
856 | video->glTexImage2D( |
857 | GL_TEXTURE_2D, |
858 | 0, |
859 | video->is_32bit ? GL_RGBA : GL_RGB, |
860 | 256, |
861 | 256, |
862 | 0, |
863 | video->is_32bit ? GL_RGBA : GL_RGB, |
864 | #ifdef GL_VERSION_1_2 |
865 | video->is_32bit ? GL_UNSIGNED_BYTE : GL_UNSIGNED_SHORT_5_6_5, |
866 | #else |
867 | GL_UNSIGNED_BYTE, |
868 | #endif |
869 | NULL); |
870 | |
871 | video->UpdateRects = SDL_GL_UpdateRectsLock; |
872 | #else |
873 | SDL_SetError("Somebody forgot to #define SDL_VIDEO_OPENGL"); |
874 | return(NULL); |
875 | #endif |
876 | } |
877 | |
878 | /* Create a shadow surface if necessary */ |
879 | /* There are three conditions under which we create a shadow surface: |
880 | 1. We need a particular bits-per-pixel that we didn't get. |
881 | 2. We need a hardware palette and didn't get one. |
882 | 3. We need a software surface and got a hardware surface. |
883 | */ |
884 | if ( !(SDL_VideoSurface->flags & SDL_OPENGL) && |
885 | ( |
886 | ( !(flags&SDL_ANYFORMAT) && |
887 | (SDL_VideoSurface->format->BitsPerPixel != bpp)) || |
888 | ( (flags&SDL_HWPALETTE) && |
889 | !(SDL_VideoSurface->flags&SDL_HWPALETTE)) || |
890 | /* If the surface is in hardware, video writes are visible |
891 | as soon as they are performed, so we need to buffer them |
892 | */ |
893 | ( ((flags&SDL_HWSURFACE) == SDL_SWSURFACE) && |
894 | (SDL_VideoSurface->flags&SDL_HWSURFACE)) || |
895 | ( (flags&SDL_DOUBLEBUF) && |
896 | (SDL_VideoSurface->flags&SDL_HWSURFACE) && |
897 | !(SDL_VideoSurface->flags&SDL_DOUBLEBUF)) |
898 | ) ) { |
899 | SDL_CreateShadowSurface(bpp); |
900 | if ( SDL_ShadowSurface == NULL ) { |
901 | SDL_SetError("Couldn't create shadow surface"); |
902 | return(NULL); |
903 | } |
904 | SDL_PublicSurface = SDL_ShadowSurface; |
905 | } else { |
906 | SDL_PublicSurface = SDL_VideoSurface; |
907 | } |
908 | video->info.vfmt = SDL_VideoSurface->format; |
909 | video->info.current_w = SDL_VideoSurface->w; |
910 | video->info.current_h = SDL_VideoSurface->h; |
911 | |
912 | /* We're done! */ |
913 | return(SDL_PublicSurface); |
914 | } |
915 | |
916 | /* |
917 | * Convert a surface into the video pixel format. |
918 | */ |
919 | SDL_Surface * SDL_DisplayFormat (SDL_Surface *surface) |
920 | { |
921 | Uint32 flags; |
922 | |
923 | if ( ! SDL_PublicSurface ) { |
924 | SDL_SetError("No video mode has been set"); |
925 | return(NULL); |
926 | } |
927 | /* Set the flags appropriate for copying to display surface */ |
928 | if (((SDL_PublicSurface->flags&SDL_HWSURFACE) == SDL_HWSURFACE) && current_video->info.blit_hw) |
929 | flags = SDL_HWSURFACE; |
930 | else |
931 | flags = SDL_SWSURFACE; |
932 | #ifdef AUTORLE_DISPLAYFORMAT |
933 | flags |= (surface->flags & (SDL_SRCCOLORKEY|SDL_SRCALPHA)); |
934 | flags |= SDL_RLEACCELOK; |
935 | #else |
936 | flags |= surface->flags & (SDL_SRCCOLORKEY|SDL_SRCALPHA|SDL_RLEACCELOK); |
937 | #endif |
938 | return(SDL_ConvertSurface(surface, SDL_PublicSurface->format, flags)); |
939 | } |
940 | |
941 | /* |
942 | * Convert a surface into a format that's suitable for blitting to |
943 | * the screen, but including an alpha channel. |
944 | */ |
945 | SDL_Surface *SDL_DisplayFormatAlpha(SDL_Surface *surface) |
946 | { |
947 | SDL_PixelFormat *vf; |
948 | SDL_PixelFormat *format; |
949 | SDL_Surface *converted; |
950 | Uint32 flags; |
951 | /* default to ARGB8888 */ |
952 | Uint32 amask = 0xff000000; |
953 | Uint32 rmask = 0x00ff0000; |
954 | Uint32 gmask = 0x0000ff00; |
955 | Uint32 bmask = 0x000000ff; |
956 | |
957 | if ( ! SDL_PublicSurface ) { |
958 | SDL_SetError("No video mode has been set"); |
959 | return(NULL); |
960 | } |
961 | vf = SDL_PublicSurface->format; |
962 | |
963 | switch(vf->BytesPerPixel) { |
964 | case 2: |
965 | /* For XGY5[56]5, use, AXGY8888, where {X, Y} = {R, B}. |
966 | For anything else (like ARGB4444) it doesn't matter |
967 | since we have no special code for it anyway */ |
968 | if ( (vf->Rmask == 0x1f) && |
969 | (vf->Bmask == 0xf800 || vf->Bmask == 0x7c00)) { |
970 | rmask = 0xff; |
971 | bmask = 0xff0000; |
972 | } |
973 | break; |
974 | |
975 | case 3: |
976 | case 4: |
977 | /* Keep the video format, as long as the high 8 bits are |
978 | unused or alpha */ |
979 | if ( (vf->Rmask == 0xff) && (vf->Bmask == 0xff0000) ) { |
980 | rmask = 0xff; |
981 | bmask = 0xff0000; |
982 | } |
983 | break; |
984 | |
985 | default: |
986 | /* We have no other optimised formats right now. When/if a new |
987 | optimised alpha format is written, add the converter here */ |
988 | break; |
989 | } |
990 | format = SDL_AllocFormat(32, rmask, gmask, bmask, amask); |
991 | flags = SDL_PublicSurface->flags & SDL_HWSURFACE; |
992 | flags |= surface->flags & (SDL_SRCALPHA | SDL_RLEACCELOK); |
993 | converted = SDL_ConvertSurface(surface, format, flags); |
994 | SDL_FreeFormat(format); |
995 | return(converted); |
996 | } |
997 | |
998 | /* |
999 | * Update a specific portion of the physical screen |
1000 | */ |
1001 | void SDL_UpdateRect(SDL_Surface *screen, Sint32 x, Sint32 y, Uint32 w, Uint32 h) |
1002 | { |
1003 | if ( screen ) { |
1004 | SDL_Rect rect; |
1005 | |
1006 | /* Perform some checking */ |
1007 | if ( w == 0 ) |
1008 | w = screen->w; |
1009 | if ( h == 0 ) |
1010 | h = screen->h; |
1011 | if ( (int)(x+w) > screen->w ) |
1012 | return; |
1013 | if ( (int)(y+h) > screen->h ) |
1014 | return; |
1015 | |
1016 | /* Fill the rectangle */ |
1017 | rect.x = (Sint16)x; |
1018 | rect.y = (Sint16)y; |
1019 | rect.w = (Uint16)w; |
1020 | rect.h = (Uint16)h; |
1021 | SDL_UpdateRects(screen, 1, &rect); |
1022 | } |
1023 | } |
1024 | void SDL_UpdateRects (SDL_Surface *screen, int numrects, SDL_Rect *rects) |
1025 | { |
1026 | int i; |
1027 | SDL_VideoDevice *video = current_video; |
1028 | SDL_VideoDevice *this = current_video; |
1029 | |
1030 | if ( (screen->flags & (SDL_OPENGL | SDL_OPENGLBLIT)) == SDL_OPENGL ) { |
1031 | SDL_SetError("OpenGL active, use SDL_GL_SwapBuffers()"); |
1032 | return; |
1033 | } |
1034 | if ( screen == SDL_ShadowSurface ) { |
1035 | /* Blit the shadow surface using saved mapping */ |
1036 | SDL_Palette *pal = screen->format->palette; |
1037 | SDL_Color *saved_colors = NULL; |
1038 | if ( pal && !(SDL_VideoSurface->flags & SDL_HWPALETTE) ) { |
1039 | /* simulated 8bpp, use correct physical palette */ |
1040 | saved_colors = pal->colors; |
1041 | if ( video->gammacols ) { |
1042 | /* gamma-corrected palette */ |
1043 | pal->colors = video->gammacols; |
1044 | } else if ( video->physpal ) { |
1045 | /* physical palette different from logical */ |
1046 | pal->colors = video->physpal->colors; |
1047 | } |
1048 | } |
1049 | if ( SHOULD_DRAWCURSOR(SDL_cursorstate) ) { |
1050 | SDL_LockCursor(); |
1051 | SDL_DrawCursor(SDL_ShadowSurface); |
1052 | for ( i=0; i<numrects; ++i ) { |
1053 | SDL_LowerBlit(SDL_ShadowSurface, &rects[i], |
1054 | SDL_VideoSurface, &rects[i]); |
1055 | } |
1056 | SDL_EraseCursor(SDL_ShadowSurface); |
1057 | SDL_UnlockCursor(); |
1058 | } else { |
1059 | for ( i=0; i<numrects; ++i ) { |
1060 | SDL_LowerBlit(SDL_ShadowSurface, &rects[i], |
1061 | SDL_VideoSurface, &rects[i]); |
1062 | } |
1063 | } |
1064 | if ( saved_colors ) { |
1065 | pal->colors = saved_colors; |
1066 | } |
1067 | |
1068 | /* Fall through to video surface update */ |
1069 | screen = SDL_VideoSurface; |
1070 | } |
1071 | if ( screen == SDL_VideoSurface ) { |
1072 | /* Update the video surface */ |
1073 | if ( screen->offset ) { |
1074 | for ( i=0; i<numrects; ++i ) { |
1075 | rects[i].x += video->offset_x; |
1076 | rects[i].y += video->offset_y; |
1077 | } |
1078 | video->UpdateRects(this, numrects, rects); |
1079 | for ( i=0; i<numrects; ++i ) { |
1080 | rects[i].x -= video->offset_x; |
1081 | rects[i].y -= video->offset_y; |
1082 | } |
1083 | } else { |
1084 | video->UpdateRects(this, numrects, rects); |
1085 | } |
1086 | } |
1087 | } |
1088 | |
1089 | /* |
1090 | * Performs hardware double buffering, if possible, or a full update if not. |
1091 | */ |
1092 | int SDL_Flip(SDL_Surface *screen) |
1093 | { |
1094 | SDL_VideoDevice *video = current_video; |
1095 | /* Copy the shadow surface to the video surface */ |
1096 | if ( screen == SDL_ShadowSurface ) { |
1097 | SDL_Rect rect; |
1098 | SDL_Palette *pal = screen->format->palette; |
1099 | SDL_Color *saved_colors = NULL; |
1100 | if ( pal && !(SDL_VideoSurface->flags & SDL_HWPALETTE) ) { |
1101 | /* simulated 8bpp, use correct physical palette */ |
1102 | saved_colors = pal->colors; |
1103 | if ( video->gammacols ) { |
1104 | /* gamma-corrected palette */ |
1105 | pal->colors = video->gammacols; |
1106 | } else if ( video->physpal ) { |
1107 | /* physical palette different from logical */ |
1108 | pal->colors = video->physpal->colors; |
1109 | } |
1110 | } |
1111 | |
1112 | rect.x = 0; |
1113 | rect.y = 0; |
1114 | rect.w = screen->w; |
1115 | rect.h = screen->h; |
1116 | if ( SHOULD_DRAWCURSOR(SDL_cursorstate) ) { |
1117 | SDL_LockCursor(); |
1118 | SDL_DrawCursor(SDL_ShadowSurface); |
1119 | SDL_LowerBlit(SDL_ShadowSurface, &rect, |
1120 | SDL_VideoSurface, &rect); |
1121 | SDL_EraseCursor(SDL_ShadowSurface); |
1122 | SDL_UnlockCursor(); |
1123 | } else { |
1124 | SDL_LowerBlit(SDL_ShadowSurface, &rect, |
1125 | SDL_VideoSurface, &rect); |
1126 | } |
1127 | if ( saved_colors ) { |
1128 | pal->colors = saved_colors; |
1129 | } |
1130 | |
1131 | /* Fall through to video surface update */ |
1132 | screen = SDL_VideoSurface; |
1133 | } |
1134 | if ( (screen->flags & SDL_DOUBLEBUF) == SDL_DOUBLEBUF ) { |
1135 | SDL_VideoDevice *this = current_video; |
1136 | return(video->FlipHWSurface(this, SDL_VideoSurface)); |
1137 | } else { |
1138 | SDL_UpdateRect(screen, 0, 0, 0, 0); |
1139 | } |
1140 | return(0); |
1141 | } |
1142 | |
1143 | static void SetPalette_logical(SDL_Surface *screen, SDL_Color *colors, |
1144 | int firstcolor, int ncolors) |
1145 | { |
1146 | SDL_Palette *pal = screen->format->palette; |
1147 | SDL_Palette *vidpal; |
1148 | |
1149 | if ( colors != (pal->colors + firstcolor) ) { |
1150 | SDL_memcpy(pal->colors + firstcolor, colors, |
1151 | ncolors * sizeof(*colors)); |
1152 | } |
1153 | |
1154 | if ( current_video && SDL_VideoSurface ) { |
1155 | vidpal = SDL_VideoSurface->format->palette; |
1156 | if ( (screen == SDL_ShadowSurface) && vidpal ) { |
1157 | /* |
1158 | * This is a shadow surface, and the physical |
1159 | * framebuffer is also indexed. Propagate the |
1160 | * changes to its logical palette so that |
1161 | * updates are always identity blits |
1162 | */ |
1163 | SDL_memcpy(vidpal->colors + firstcolor, colors, |
1164 | ncolors * sizeof(*colors)); |
1165 | } |
1166 | } |
1167 | SDL_FormatChanged(screen); |
1168 | } |
1169 | |
1170 | static int SetPalette_physical(SDL_Surface *screen, |
1171 | SDL_Color *colors, int firstcolor, int ncolors) |
1172 | { |
1173 | SDL_VideoDevice *video = current_video; |
1174 | int gotall = 1; |
1175 | |
1176 | if ( video->physpal ) { |
1177 | /* We need to copy the new colors, since we haven't |
1178 | * already done the copy in the logical set above. |
1179 | */ |
1180 | SDL_memcpy(video->physpal->colors + firstcolor, |
1181 | colors, ncolors * sizeof(*colors)); |
1182 | } |
1183 | if ( screen == SDL_ShadowSurface ) { |
1184 | if ( SDL_VideoSurface->flags & SDL_HWPALETTE ) { |
1185 | /* |
1186 | * The real screen is also indexed - set its physical |
1187 | * palette. The physical palette does not include the |
1188 | * gamma modification, we apply it directly instead, |
1189 | * but this only happens if we have hardware palette. |
1190 | */ |
1191 | screen = SDL_VideoSurface; |
1192 | } else { |
1193 | /* |
1194 | * The video surface is not indexed - invalidate any |
1195 | * active shadow-to-video blit mappings. |
1196 | */ |
1197 | if ( screen->map->dst == SDL_VideoSurface ) { |
1198 | SDL_InvalidateMap(screen->map); |
1199 | } |
1200 | if ( video->gamma ) { |
1201 | if( ! video->gammacols ) { |
1202 | SDL_Palette *pp = video->physpal; |
1203 | if(!pp) |
1204 | pp = screen->format->palette; |
1205 | video->gammacols = SDL_malloc(pp->ncolors |
1206 | * sizeof(SDL_Color)); |
1207 | SDL_ApplyGamma(video->gamma, |
1208 | pp->colors, |
1209 | video->gammacols, |
1210 | pp->ncolors); |
1211 | } else { |
1212 | SDL_ApplyGamma(video->gamma, colors, |
1213 | video->gammacols |
1214 | + firstcolor, |
1215 | ncolors); |
1216 | } |
1217 | } |
1218 | SDL_UpdateRect(screen, 0, 0, 0, 0); |
1219 | } |
1220 | } |
1221 | |
1222 | if ( screen == SDL_VideoSurface ) { |
1223 | SDL_Color gcolors[256]; |
1224 | |
1225 | if ( video->gamma ) { |
1226 | SDL_ApplyGamma(video->gamma, colors, gcolors, ncolors); |
1227 | colors = gcolors; |
1228 | } |
1229 | gotall = video->SetColors(video, firstcolor, ncolors, colors); |
1230 | if ( ! gotall ) { |
1231 | /* The video flags shouldn't have SDL_HWPALETTE, and |
1232 | the video driver is responsible for copying back the |
1233 | correct colors into the video surface palette. |
1234 | */ |
1235 | ; |
1236 | } |
1237 | SDL_CursorPaletteChanged(); |
1238 | } |
1239 | return gotall; |
1240 | } |
1241 | |
1242 | /* |
1243 | * Set the physical and/or logical colormap of a surface: |
1244 | * Only the screen has a physical colormap. It determines what is actually |
1245 | * sent to the display. |
1246 | * The logical colormap is used to map blits to/from the surface. |
1247 | * 'which' is one or both of SDL_LOGPAL, SDL_PHYSPAL |
1248 | * |
1249 | * Return nonzero if all colours were set as requested, or 0 otherwise. |
1250 | */ |
1251 | int SDL_SetPalette(SDL_Surface *screen, int which, |
1252 | SDL_Color *colors, int firstcolor, int ncolors) |
1253 | { |
1254 | SDL_Palette *pal; |
1255 | int gotall; |
1256 | int palsize; |
1257 | |
1258 | if ( !screen ) { |
1259 | return 0; |
1260 | } |
1261 | if ( !current_video || screen != SDL_PublicSurface ) { |
1262 | /* only screens have physical palettes */ |
1263 | which &= ~SDL_PHYSPAL; |
1264 | } else if ( (screen->flags & SDL_HWPALETTE) != SDL_HWPALETTE ) { |
1265 | /* hardware palettes required for split colormaps */ |
1266 | which |= SDL_PHYSPAL | SDL_LOGPAL; |
1267 | } |
1268 | |
1269 | /* Verify the parameters */ |
1270 | pal = screen->format->palette; |
1271 | if( !pal ) { |
1272 | return 0; /* not a palettized surface */ |
1273 | } |
1274 | gotall = 1; |
1275 | palsize = 1 << screen->format->BitsPerPixel; |
1276 | if ( ncolors > (palsize - firstcolor) ) { |
1277 | ncolors = (palsize - firstcolor); |
1278 | gotall = 0; |
1279 | } |
1280 | |
1281 | if ( which & SDL_LOGPAL ) { |
1282 | /* |
1283 | * Logical palette change: The actual screen isn't affected, |
1284 | * but the internal colormap is altered so that the |
1285 | * interpretation of the pixel values (for blits etc) is |
1286 | * changed. |
1287 | */ |
1288 | SetPalette_logical(screen, colors, firstcolor, ncolors); |
1289 | } |
1290 | if ( which & SDL_PHYSPAL ) { |
1291 | SDL_VideoDevice *video = current_video; |
1292 | /* |
1293 | * Physical palette change: This doesn't affect the |
1294 | * program's idea of what the screen looks like, but changes |
1295 | * its actual appearance. |
1296 | */ |
1297 | if ( !video->physpal && !(which & SDL_LOGPAL) ) { |
1298 | /* Lazy physical palette allocation */ |
1299 | int size; |
1300 | SDL_Palette *pp = SDL_malloc(sizeof(*pp)); |
1301 | if ( !pp ) { |
1302 | return 0; |
1303 | } |
1304 | video->physpal = pp; |
1305 | pp->ncolors = pal->ncolors; |
1306 | size = pp->ncolors * sizeof(SDL_Color); |
1307 | pp->colors = SDL_malloc(size); |
1308 | if ( !pp->colors ) { |
1309 | return 0; |
1310 | } |
1311 | SDL_memcpy(pp->colors, pal->colors, size); |
1312 | } |
1313 | if ( ! SetPalette_physical(screen, |
1314 | colors, firstcolor, ncolors) ) { |
1315 | gotall = 0; |
1316 | } |
1317 | } |
1318 | return gotall; |
1319 | } |
1320 | |
1321 | int SDL_SetColors(SDL_Surface *screen, SDL_Color *colors, int firstcolor, |
1322 | int ncolors) |
1323 | { |
1324 | return SDL_SetPalette(screen, SDL_LOGPAL | SDL_PHYSPAL, |
1325 | colors, firstcolor, ncolors); |
1326 | } |
1327 | |
1328 | /* |
1329 | * Clean up the video subsystem |
1330 | */ |
1331 | void SDL_VideoQuit (void) |
1332 | { |
1333 | SDL_Surface *ready_to_go; |
1334 | |
1335 | if ( current_video ) { |
1336 | SDL_VideoDevice *video = current_video; |
1337 | SDL_VideoDevice *this = current_video; |
1338 | |
1339 | /* Halt event processing before doing anything else */ |
1340 | SDL_StopEventLoop(); |
1341 | |
1342 | /* Clean up allocated window manager items */ |
1343 | if ( SDL_PublicSurface ) { |
1344 | SDL_PublicSurface = NULL; |
1345 | } |
1346 | SDL_CursorQuit(); |
1347 | |
1348 | /* Just in case... */ |
1349 | SDL_WM_GrabInputOff(); |
1350 | |
1351 | /* Clean up the system video */ |
1352 | video->VideoQuit(this); |
1353 | |
1354 | /* Free any lingering surfaces */ |
1355 | ready_to_go = SDL_ShadowSurface; |
1356 | SDL_ShadowSurface = NULL; |
1357 | SDL_FreeSurface(ready_to_go); |
1358 | if ( SDL_VideoSurface != NULL ) { |
1359 | ready_to_go = SDL_VideoSurface; |
1360 | SDL_VideoSurface = NULL; |
1361 | SDL_FreeSurface(ready_to_go); |
1362 | } |
1363 | SDL_PublicSurface = NULL; |
1364 | |
1365 | /* Clean up miscellaneous memory */ |
1366 | if ( video->physpal ) { |
1367 | SDL_free(video->physpal->colors); |
1368 | SDL_free(video->physpal); |
1369 | video->physpal = NULL; |
1370 | } |
1371 | if ( video->gammacols ) { |
1372 | SDL_free(video->gammacols); |
1373 | video->gammacols = NULL; |
1374 | } |
1375 | if ( video->gamma ) { |
1376 | SDL_free(video->gamma); |
1377 | video->gamma = NULL; |
1378 | } |
1379 | if ( video->wm_title != NULL ) { |
1380 | SDL_free(video->wm_title); |
1381 | video->wm_title = NULL; |
1382 | } |
1383 | if ( video->wm_icon != NULL ) { |
1384 | SDL_free(video->wm_icon); |
1385 | video->wm_icon = NULL; |
1386 | } |
1387 | |
1388 | /* Finish cleaning up video subsystem */ |
1389 | video->free(this); |
1390 | current_video = NULL; |
1391 | } |
1392 | return; |
1393 | } |
1394 | |
1395 | /* Load the GL driver library */ |
1396 | int SDL_GL_LoadLibrary(const char *path) |
1397 | { |
1398 | SDL_VideoDevice *video = current_video; |
1399 | SDL_VideoDevice *this = current_video; |
1400 | int retval; |
1401 | |
1402 | retval = -1; |
1403 | if ( video == NULL ) { |
1404 | SDL_SetError("Video subsystem has not been initialized"); |
1405 | } else { |
1406 | if ( video->GL_LoadLibrary ) { |
1407 | retval = video->GL_LoadLibrary(this, path); |
1408 | } else { |
1409 | SDL_SetError("No dynamic GL support in video driver"); |
1410 | } |
1411 | } |
1412 | return(retval); |
1413 | } |
1414 | |
1415 | void *SDL_GL_GetProcAddress(const char* proc) |
1416 | { |
1417 | SDL_VideoDevice *video = current_video; |
1418 | SDL_VideoDevice *this = current_video; |
1419 | void *func; |
1420 | |
1421 | func = NULL; |
1422 | if ( video->GL_GetProcAddress ) { |
1423 | if ( video->gl_config.driver_loaded ) { |
1424 | func = video->GL_GetProcAddress(this, proc); |
1425 | } else { |
1426 | SDL_SetError("No GL driver has been loaded"); |
1427 | } |
1428 | } else { |
1429 | SDL_SetError("No dynamic GL support in video driver"); |
1430 | } |
1431 | return func; |
1432 | } |
1433 | |
1434 | /* Set the specified GL attribute for setting up a GL video mode */ |
1435 | int SDL_GL_SetAttribute( SDL_GLattr attr, int value ) |
1436 | { |
1437 | int retval; |
1438 | SDL_VideoDevice *video = current_video; |
1439 | |
1440 | retval = 0; |
1441 | switch (attr) { |
1442 | case SDL_GL_RED_SIZE: |
1443 | video->gl_config.red_size = value; |
1444 | break; |
1445 | case SDL_GL_GREEN_SIZE: |
1446 | video->gl_config.green_size = value; |
1447 | break; |
1448 | case SDL_GL_BLUE_SIZE: |
1449 | video->gl_config.blue_size = value; |
1450 | break; |
1451 | case SDL_GL_ALPHA_SIZE: |
1452 | video->gl_config.alpha_size = value; |
1453 | break; |
1454 | case SDL_GL_DOUBLEBUFFER: |
1455 | video->gl_config.double_buffer = value; |
1456 | break; |
1457 | case SDL_GL_BUFFER_SIZE: |
1458 | video->gl_config.buffer_size = value; |
1459 | break; |
1460 | case SDL_GL_DEPTH_SIZE: |
1461 | video->gl_config.depth_size = value; |
1462 | break; |
1463 | case SDL_GL_STENCIL_SIZE: |
1464 | video->gl_config.stencil_size = value; |
1465 | break; |
1466 | case SDL_GL_ACCUM_RED_SIZE: |
1467 | video->gl_config.accum_red_size = value; |
1468 | break; |
1469 | case SDL_GL_ACCUM_GREEN_SIZE: |
1470 | video->gl_config.accum_green_size = value; |
1471 | break; |
1472 | case SDL_GL_ACCUM_BLUE_SIZE: |
1473 | video->gl_config.accum_blue_size = value; |
1474 | break; |
1475 | case SDL_GL_ACCUM_ALPHA_SIZE: |
1476 | video->gl_config.accum_alpha_size = value; |
1477 | break; |
1478 | case SDL_GL_STEREO: |
1479 | video->gl_config.stereo = value; |
1480 | break; |
1481 | case SDL_GL_MULTISAMPLEBUFFERS: |
1482 | video->gl_config.multisamplebuffers = value; |
1483 | break; |
1484 | case SDL_GL_MULTISAMPLESAMPLES: |
1485 | video->gl_config.multisamplesamples = value; |
1486 | break; |
1487 | case SDL_GL_ACCELERATED_VISUAL: |
1488 | video->gl_config.accelerated = value; |
1489 | break; |
1490 | case SDL_GL_SWAP_CONTROL: |
1491 | video->gl_config.swap_control = value; |
1492 | break; |
1493 | default: |
1494 | SDL_SetError("Unknown OpenGL attribute"); |
1495 | retval = -1; |
1496 | break; |
1497 | } |
1498 | return(retval); |
1499 | } |
1500 | |
1501 | /* Retrieve an attribute value from the windowing system. */ |
1502 | int SDL_GL_GetAttribute(SDL_GLattr attr, int* value) |
1503 | { |
1504 | int retval = -1; |
1505 | SDL_VideoDevice* video = current_video; |
1506 | SDL_VideoDevice* this = current_video; |
1507 | |
1508 | if ( video->GL_GetAttribute ) { |
1509 | retval = this->GL_GetAttribute(this, attr, value); |
1510 | } else { |
1511 | *value = 0; |
1512 | SDL_SetError("GL_GetAttribute not supported"); |
1513 | } |
1514 | return retval; |
1515 | } |
1516 | |
1517 | /* Perform a GL buffer swap on the current GL context */ |
1518 | void SDL_GL_SwapBuffers(void) |
1519 | { |
1520 | SDL_VideoDevice *video = current_video; |
1521 | SDL_VideoDevice *this = current_video; |
1522 | |
1523 | if ( video->screen->flags & SDL_OPENGL ) { |
1524 | video->GL_SwapBuffers(this); |
1525 | } else { |
1526 | SDL_SetError("OpenGL video mode has not been set"); |
1527 | } |
1528 | } |
1529 | |
1530 | /* Update rects with locking */ |
1531 | void SDL_GL_UpdateRectsLock(SDL_VideoDevice* this, int numrects, SDL_Rect *rects) |
1532 | { |
1533 | SDL_GL_Lock(); |
1534 | SDL_GL_UpdateRects(numrects, rects); |
1535 | SDL_GL_Unlock(); |
1536 | } |
1537 | |
1538 | /* Update rects without state setting and changing (the caller is responsible for it) */ |
1539 | void SDL_GL_UpdateRects(int numrects, SDL_Rect *rects) |
1540 | { |
1541 | #if SDL_VIDEO_OPENGL |
1542 | SDL_VideoDevice *this = current_video; |
1543 | SDL_Rect update, tmp; |
1544 | int x, y, i; |
1545 | |
1546 | for ( i = 0; i < numrects; i++ ) |
1547 | { |
1548 | tmp.y = rects[i].y; |
1549 | tmp.h = rects[i].h; |
1550 | for ( y = 0; y <= rects[i].h / 256; y++ ) |
1551 | { |
1552 | tmp.x = rects[i].x; |
1553 | tmp.w = rects[i].w; |
1554 | for ( x = 0; x <= rects[i].w / 256; x++ ) |
1555 | { |
1556 | update.x = tmp.x; |
1557 | update.y = tmp.y; |
1558 | update.w = tmp.w; |
1559 | update.h = tmp.h; |
1560 | |
1561 | if ( update.w > 256 ) |
1562 | update.w = 256; |
1563 | |
1564 | if ( update.h > 256 ) |
1565 | update.h = 256; |
1566 | |
1567 | this->glFlush(); |
1568 | this->glTexSubImage2D( |
1569 | GL_TEXTURE_2D, |
1570 | 0, |
1571 | 0, |
1572 | 0, |
1573 | update.w, |
1574 | update.h, |
1575 | this->is_32bit? GL_RGBA : GL_RGB, |
1576 | #ifdef GL_VERSION_1_2 |
1577 | this->is_32bit ? GL_UNSIGNED_BYTE : GL_UNSIGNED_SHORT_5_6_5, |
1578 | #else |
1579 | GL_UNSIGNED_BYTE, |
1580 | #endif |
1581 | (Uint8 *)this->screen->pixels + |
1582 | this->screen->format->BytesPerPixel * update.x + |
1583 | update.y * this->screen->pitch ); |
1584 | |
1585 | this->glFlush(); |
1586 | /* |
1587 | * Note the parens around the function name: |
1588 | * This is because some OpenGL implementations define glTexCoord etc |
1589 | * as macros, and we don't want them expanded here. |
1590 | */ |
1591 | this->glBegin(GL_TRIANGLE_STRIP); |
1592 | (this->glTexCoord2f)( 0.0, 0.0 ); |
1593 | (this->glVertex2i)( update.x, update.y ); |
1594 | (this->glTexCoord2f)( (float)(update.w / 256.0), 0.0 ); |
1595 | (this->glVertex2i)( update.x + update.w, update.y ); |
1596 | (this->glTexCoord2f)( 0.0, (float)(update.h / 256.0) ); |
1597 | (this->glVertex2i)( update.x, update.y + update.h ); |
1598 | (this->glTexCoord2f)( (float)(update.w / 256.0), (float)(update.h / 256.0) ); |
1599 | (this->glVertex2i)( update.x + update.w , update.y + update.h ); |
1600 | this->glEnd(); |
1601 | |
1602 | tmp.x += 256; |
1603 | tmp.w -= 256; |
1604 | } |
1605 | tmp.y += 256; |
1606 | tmp.h -= 256; |
1607 | } |
1608 | } |
1609 | #endif |
1610 | } |
1611 | |
1612 | /* Lock == save current state */ |
1613 | void SDL_GL_Lock() |
1614 | { |
1615 | #if SDL_VIDEO_OPENGL |
1616 | lock_count--; |
1617 | if (lock_count==-1) |
1618 | { |
1619 | SDL_VideoDevice *this = current_video; |
1620 | |
1621 | this->glPushAttrib( GL_ALL_ATTRIB_BITS ); /* TODO: narrow range of what is saved */ |
1622 | #ifdef GL_CLIENT_PIXEL_STORE_BIT |
1623 | this->glPushClientAttrib( GL_CLIENT_PIXEL_STORE_BIT ); |
1624 | #endif |
1625 | |
1626 | this->glEnable(GL_TEXTURE_2D); |
1627 | this->glEnable(GL_BLEND); |
1628 | this->glDisable(GL_FOG); |
1629 | this->glDisable(GL_ALPHA_TEST); |
1630 | this->glDisable(GL_DEPTH_TEST); |
1631 | this->glDisable(GL_SCISSOR_TEST); |
1632 | this->glDisable(GL_STENCIL_TEST); |
1633 | this->glDisable(GL_CULL_FACE); |
1634 | |
1635 | this->glBindTexture( GL_TEXTURE_2D, this->texture ); |
1636 | this->glTexEnvf( GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE ); |
1637 | this->glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST ); |
1638 | this->glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST ); |
1639 | this->glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT ); |
1640 | this->glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT ); |
1641 | |
1642 | this->glPixelStorei( GL_UNPACK_ROW_LENGTH, this->screen->pitch / this->screen->format->BytesPerPixel ); |
1643 | this->glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA); |
1644 | (this->glColor4f)(1.0, 1.0, 1.0, 1.0); /* Solaris workaround */ |
1645 | |
1646 | this->glViewport(0, 0, this->screen->w, this->screen->h); |
1647 | this->glMatrixMode(GL_PROJECTION); |
1648 | this->glPushMatrix(); |
1649 | this->glLoadIdentity(); |
1650 | |
1651 | this->glOrtho(0.0, (GLdouble) this->screen->w, (GLdouble) this->screen->h, 0.0, 0.0, 1.0); |
1652 | |
1653 | this->glMatrixMode(GL_MODELVIEW); |
1654 | this->glPushMatrix(); |
1655 | this->glLoadIdentity(); |
1656 | } |
1657 | #endif |
1658 | } |
1659 | |
1660 | /* Unlock == restore saved state */ |
1661 | void SDL_GL_Unlock() |
1662 | { |
1663 | #if SDL_VIDEO_OPENGL |
1664 | lock_count++; |
1665 | if (lock_count==0) |
1666 | { |
1667 | SDL_VideoDevice *this = current_video; |
1668 | |
1669 | this->glPopMatrix(); |
1670 | this->glMatrixMode(GL_PROJECTION); |
1671 | this->glPopMatrix(); |
1672 | |
1673 | this->glPopClientAttrib(); |
1674 | this->glPopAttrib(); |
1675 | } |
1676 | #endif |
1677 | } |
1678 | |
1679 | /* |
1680 | * Sets/Gets the title and icon text of the display window, if any. |
1681 | */ |
1682 | void SDL_WM_SetCaption (const char *title, const char *icon) |
1683 | { |
1684 | SDL_VideoDevice *video = current_video; |
1685 | SDL_VideoDevice *this = current_video; |
1686 | |
1687 | if ( video ) { |
1688 | if ( title ) { |
1689 | if ( video->wm_title ) { |
1690 | SDL_free(video->wm_title); |
1691 | } |
1692 | video->wm_title = SDL_strdup(title); |
1693 | } |
1694 | if ( icon ) { |
1695 | if ( video->wm_icon ) { |
1696 | SDL_free(video->wm_icon); |
1697 | } |
1698 | video->wm_icon = SDL_strdup(icon); |
1699 | } |
1700 | if ( (title || icon) && (video->SetCaption != NULL) ) { |
1701 | video->SetCaption(this, video->wm_title,video->wm_icon); |
1702 | } |
1703 | } |
1704 | } |
1705 | void SDL_WM_GetCaption (char **title, char **icon) |
1706 | { |
1707 | SDL_VideoDevice *video = current_video; |
1708 | |
1709 | if ( video ) { |
1710 | if ( title ) { |
1711 | *title = video->wm_title; |
1712 | } |
1713 | if ( icon ) { |
1714 | *icon = video->wm_icon; |
1715 | } |
1716 | } |
1717 | } |
1718 | |
1719 | /* Utility function used by SDL_WM_SetIcon(); |
1720 | * flags & 1 for color key, flags & 2 for alpha channel. */ |
1721 | static void CreateMaskFromColorKeyOrAlpha(SDL_Surface *icon, Uint8 *mask, int flags) |
1722 | { |
1723 | int x, y; |
1724 | Uint32 colorkey; |
1725 | #define SET_MASKBIT(icon, x, y, mask) \ |
1726 | mask[(y*((icon->w+7)/8))+(x/8)] &= ~(0x01<<(7-(x%8))) |
1727 | |
1728 | colorkey = icon->format->colorkey; |
1729 | switch (icon->format->BytesPerPixel) { |
1730 | case 1: { Uint8 *pixels; |
1731 | for ( y=0; y<icon->h; ++y ) { |
1732 | pixels = (Uint8 *)icon->pixels + y*icon->pitch; |
1733 | for ( x=0; x<icon->w; ++x ) { |
1734 | if ( *pixels++ == colorkey ) { |
1735 | SET_MASKBIT(icon, x, y, mask); |
1736 | } |
1737 | } |
1738 | } |
1739 | } |
1740 | break; |
1741 | |
1742 | case 2: { Uint16 *pixels; |
1743 | for ( y=0; y<icon->h; ++y ) { |
1744 | pixels = (Uint16 *)icon->pixels + |
1745 | y*icon->pitch/2; |
1746 | for ( x=0; x<icon->w; ++x ) { |
1747 | if ( (flags & 1) && *pixels == colorkey ) { |
1748 | SET_MASKBIT(icon, x, y, mask); |
1749 | } else if((flags & 2) && (*pixels & icon->format->Amask) == 0) { |
1750 | SET_MASKBIT(icon, x, y, mask); |
1751 | } |
1752 | pixels++; |
1753 | } |
1754 | } |
1755 | } |
1756 | break; |
1757 | |
1758 | case 4: { Uint32 *pixels; |
1759 | for ( y=0; y<icon->h; ++y ) { |
1760 | pixels = (Uint32 *)icon->pixels + |
1761 | y*icon->pitch/4; |
1762 | for ( x=0; x<icon->w; ++x ) { |
1763 | if ( (flags & 1) && *pixels == colorkey ) { |
1764 | SET_MASKBIT(icon, x, y, mask); |
1765 | } else if((flags & 2) && (*pixels & icon->format->Amask) == 0) { |
1766 | SET_MASKBIT(icon, x, y, mask); |
1767 | } |
1768 | pixels++; |
1769 | } |
1770 | } |
1771 | } |
1772 | break; |
1773 | } |
1774 | } |
1775 | |
1776 | /* |
1777 | * Sets the window manager icon for the display window. |
1778 | */ |
1779 | void SDL_WM_SetIcon (SDL_Surface *icon, Uint8 *mask) |
1780 | { |
1781 | SDL_VideoDevice *video = current_video; |
1782 | SDL_VideoDevice *this = current_video; |
1783 | |
1784 | if ( icon && video->SetIcon ) { |
1785 | /* Generate a mask if necessary, and create the icon! */ |
1786 | if ( mask == NULL ) { |
1787 | int mask_len = icon->h*(icon->w+7)/8; |
1788 | int flags = 0; |
1789 | mask = (Uint8 *)SDL_malloc(mask_len); |
1790 | if ( mask == NULL ) { |
1791 | return; |
1792 | } |
1793 | SDL_memset(mask, ~0, mask_len); |
1794 | if ( icon->flags & SDL_SRCCOLORKEY ) flags |= 1; |
1795 | if ( icon->flags & SDL_SRCALPHA ) flags |= 2; |
1796 | if( flags ) { |
1797 | CreateMaskFromColorKeyOrAlpha(icon, mask, flags); |
1798 | } |
1799 | video->SetIcon(video, icon, mask); |
1800 | SDL_free(mask); |
1801 | } else { |
1802 | video->SetIcon(this, icon, mask); |
1803 | } |
1804 | } |
1805 | } |
1806 | |
1807 | /* |
1808 | * Grab or ungrab the keyboard and mouse input. |
1809 | * This function returns the final grab mode after calling the |
1810 | * driver dependent function. |
1811 | */ |
1812 | static SDL_GrabMode SDL_WM_GrabInputRaw(SDL_GrabMode mode) |
1813 | { |
1814 | SDL_VideoDevice *video = current_video; |
1815 | SDL_VideoDevice *this = current_video; |
1816 | |
1817 | /* Only do something if we have support for grabs */ |
1818 | if ( video->GrabInput == NULL ) { |
1819 | return(video->input_grab); |
1820 | } |
1821 | |
1822 | /* If the final grab mode if off, only then do we actually grab */ |
1823 | #ifdef DEBUG_GRAB |
1824 | printf("SDL_WM_GrabInputRaw(%d) ... ", mode); |
1825 | #endif |
1826 | if ( mode == SDL_GRAB_OFF ) { |
1827 | if ( video->input_grab != SDL_GRAB_OFF ) { |
1828 | mode = video->GrabInput(this, mode); |
1829 | } |
1830 | } else { |
1831 | if ( video->input_grab == SDL_GRAB_OFF ) { |
1832 | mode = video->GrabInput(this, mode); |
1833 | } |
1834 | } |
1835 | if ( mode != video->input_grab ) { |
1836 | video->input_grab = mode; |
1837 | if ( video->CheckMouseMode ) { |
1838 | video->CheckMouseMode(this); |
1839 | } |
1840 | } |
1841 | #ifdef DEBUG_GRAB |
1842 | printf("Final mode %d\n", video->input_grab); |
1843 | #endif |
1844 | |
1845 | /* Return the final grab state */ |
1846 | if ( mode >= SDL_GRAB_FULLSCREEN ) { |
1847 | mode -= SDL_GRAB_FULLSCREEN; |
1848 | } |
1849 | return(mode); |
1850 | } |
1851 | SDL_GrabMode SDL_WM_GrabInput(SDL_GrabMode mode) |
1852 | { |
1853 | SDL_VideoDevice *video = current_video; |
1854 | |
1855 | /* If the video isn't initialized yet, we can't do anything */ |
1856 | if ( ! video ) { |
1857 | return SDL_GRAB_OFF; |
1858 | } |
1859 | |
1860 | /* Return the current mode on query */ |
1861 | if ( mode == SDL_GRAB_QUERY ) { |
1862 | mode = video->input_grab; |
1863 | if ( mode >= SDL_GRAB_FULLSCREEN ) { |
1864 | mode -= SDL_GRAB_FULLSCREEN; |
1865 | } |
1866 | return(mode); |
1867 | } |
1868 | |
1869 | #ifdef DEBUG_GRAB |
1870 | printf("SDL_WM_GrabInput(%d) ... ", mode); |
1871 | #endif |
1872 | /* If the video surface is fullscreen, we always grab */ |
1873 | if ( mode >= SDL_GRAB_FULLSCREEN ) { |
1874 | mode -= SDL_GRAB_FULLSCREEN; |
1875 | } |
1876 | if ( SDL_VideoSurface && (SDL_VideoSurface->flags & SDL_FULLSCREEN) ) { |
1877 | mode += SDL_GRAB_FULLSCREEN; |
1878 | } |
1879 | return(SDL_WM_GrabInputRaw(mode)); |
1880 | } |
1881 | static SDL_GrabMode SDL_WM_GrabInputOff(void) |
1882 | { |
1883 | SDL_GrabMode mode; |
1884 | |
1885 | /* First query the current grab state */ |
1886 | mode = SDL_WM_GrabInput(SDL_GRAB_QUERY); |
1887 | |
1888 | /* Now explicitly turn off input grab */ |
1889 | SDL_WM_GrabInputRaw(SDL_GRAB_OFF); |
1890 | |
1891 | /* Return the old state */ |
1892 | return(mode); |
1893 | } |
1894 | |
1895 | /* |
1896 | * Iconify the window in window managed environments. |
1897 | * A successful iconification will result in an SDL_APPACTIVE loss event. |
1898 | */ |
1899 | int SDL_WM_IconifyWindow(void) |
1900 | { |
1901 | SDL_VideoDevice *video = current_video; |
1902 | SDL_VideoDevice *this = current_video; |
1903 | int retval; |
1904 | |
1905 | retval = 0; |
1906 | if ( video->IconifyWindow ) { |
1907 | retval = video->IconifyWindow(this); |
1908 | } |
1909 | return(retval); |
1910 | } |
1911 | |
1912 | /* |
1913 | * Toggle fullscreen mode |
1914 | */ |
1915 | int SDL_WM_ToggleFullScreen(SDL_Surface *surface) |
1916 | { |
1917 | SDL_VideoDevice *video = current_video; |
1918 | SDL_VideoDevice *this = current_video; |
1919 | int toggled; |
1920 | |
1921 | toggled = 0; |
1922 | if ( SDL_PublicSurface && (surface == SDL_PublicSurface) && |
1923 | video->ToggleFullScreen ) { |
1924 | if ( surface->flags & SDL_FULLSCREEN ) { |
1925 | toggled = video->ToggleFullScreen(this, 0); |
1926 | if ( toggled ) { |
1927 | SDL_VideoSurface->flags &= ~SDL_FULLSCREEN; |
1928 | SDL_PublicSurface->flags &= ~SDL_FULLSCREEN; |
1929 | } |
1930 | } else { |
1931 | toggled = video->ToggleFullScreen(this, 1); |
1932 | if ( toggled ) { |
1933 | SDL_VideoSurface->flags |= SDL_FULLSCREEN; |
1934 | SDL_PublicSurface->flags |= SDL_FULLSCREEN; |
1935 | } |
1936 | } |
1937 | /* Double-check the grab state inside SDL_WM_GrabInput() */ |
1938 | if ( toggled ) { |
1939 | SDL_WM_GrabInput(video->input_grab); |
1940 | } |
1941 | } |
1942 | return(toggled); |
1943 | } |
1944 | |
1945 | /* |
1946 | * Get some platform dependent window manager information |
1947 | */ |
1948 | int SDL_GetWMInfo (SDL_SysWMinfo *info) |
1949 | { |
1950 | SDL_VideoDevice *video = current_video; |
1951 | SDL_VideoDevice *this = current_video; |
1952 | |
1953 | if ( video && video->GetWMInfo ) { |
1954 | return(video->GetWMInfo(this, info)); |
1955 | } else { |
1956 | return(0); |
1957 | } |
1958 | } |