Rev 8218 | Rev 9769 | Go to most recent revision | Details | Compare with Previous | Last modification | View Log | RSS feed
Rev | Author | Line No. | Line |
---|---|---|---|
8210 | maxcodehac | 1 | /* |
2 | SDL - Simple DirectMedia Layer |
||
3 | Copyright (C) 1997, 1998, 1999, 2000, 2001 Sam Lantinga |
||
4 | |||
5 | This library is free software; you can redistribute it and/or |
||
6 | modify it under the terms of the GNU Library General Public |
||
7 | License as published by the Free Software Foundation; either |
||
8 | version 2 of the License, or (at your option) any later version. |
||
9 | |||
10 | This library is distributed in the hope that it will be useful, |
||
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
||
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
||
13 | Library General Public License for more details. |
||
14 | |||
15 | You should have received a copy of the GNU Library General Public |
||
16 | License along with this library; if not, write to the Free |
||
17 | Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
||
18 | |||
19 | Sam Lantinga |
||
20 | slouken@devolution.com |
||
21 | */ |
||
22 | |||
23 | |||
24 | /* The high-level video driver subsystem */ |
||
25 | |||
26 | #include |
||
27 | #include |
||
28 | #include |
||
29 | |||
30 | #include "SDL.h" |
||
31 | #include "SDL_error.h" |
||
32 | #include "SDL_video.h" |
||
33 | #include "SDL_events.h" |
||
34 | #include "SDL_mutex.h" |
||
35 | #include "SDL_sysvideo.h" |
||
36 | #include "SDL_sysevents.h" |
||
37 | #include "SDL_blit.h" |
||
38 | #include "SDL_pixels_c.h" |
||
39 | #include "SDL_events_c.h" |
||
40 | #include "SDL_cursor_c.h" |
||
41 | |||
42 | /* Available video drivers */ |
||
43 | static VideoBootStrap *bootstrap[] = { |
||
44 | #ifdef ENABLE_X11 |
||
45 | &X11_bootstrap, |
||
46 | #endif |
||
47 | #ifdef ENABLE_DGA |
||
48 | &DGA_bootstrap, |
||
49 | #endif |
||
50 | #ifdef ENABLE_NANOX |
||
51 | &NX_bootstrap, |
||
52 | #endif |
||
53 | #ifdef ENABLE_FBCON |
||
54 | &FBCON_bootstrap, |
||
55 | #endif |
||
56 | #ifdef ENABLE_PS2GS |
||
57 | &PS2GS_bootstrap, |
||
58 | #endif |
||
59 | #ifdef ENABLE_GGI |
||
60 | &GGI_bootstrap, |
||
61 | #endif |
||
62 | #ifdef ENABLE_VGL |
||
63 | &VGL_bootstrap, |
||
64 | #endif |
||
65 | #ifdef ENABLE_SVGALIB |
||
66 | &SVGALIB_bootstrap, |
||
67 | #endif |
||
68 | #ifdef ENABLE_AALIB |
||
69 | &AALIB_bootstrap, |
||
70 | #endif |
||
71 | #ifdef ENABLE_DIRECTX |
||
72 | &DIRECTX_bootstrap, |
||
73 | #endif |
||
74 | #ifdef ENABLE_WINDIB |
||
75 | &WINDIB_bootstrap, |
||
76 | #endif |
||
77 | #ifdef ENABLE_BWINDOW |
||
78 | &BWINDOW_bootstrap, |
||
79 | #endif |
||
80 | #ifdef ENABLE_TOOLBOX |
||
81 | &TOOLBOX_bootstrap, |
||
82 | #endif |
||
83 | #ifdef ENABLE_DRAWSPROCKET |
||
84 | &DSp_bootstrap, |
||
85 | #endif |
||
86 | #ifdef ENABLE_QUARTZ |
||
87 | &QZ_bootstrap, |
||
88 | #endif |
||
89 | #ifdef ENABLE_CYBERGRAPHICS |
||
90 | &CGX_bootstrap, |
||
91 | #endif |
||
92 | #ifdef ENABLE_DUMMYVIDEO |
||
93 | &DUMMY_bootstrap, |
||
94 | #endif |
||
95 | #ifdef ENABLE_PHOTON |
||
96 | &ph_bootstrap, |
||
97 | #endif |
||
8218 | maxcodehac | 98 | #ifdef ENABLE_KOLIBRIOS |
8210 | maxcodehac | 99 | &mosvideo_bootstrab, |
100 | #endif |
||
101 | NULL |
||
102 | }; |
||
103 | |||
104 | SDL_VideoDevice *current_video = NULL; |
||
105 | |||
106 | /* Various local functions */ |
||
107 | int SDL_VideoInit(const char *driver_name, Uint32 flags); |
||
108 | void SDL_VideoQuit(void); |
||
109 | void SDL_GL_UpdateRectsLock(SDL_VideoDevice* this, int numrects, SDL_Rect* rects); |
||
110 | |||
111 | static SDL_GrabMode SDL_WM_GrabInputOff(void); |
||
112 | #ifdef HAVE_OPENGL |
||
113 | static int lock_count = 0; |
||
114 | #endif |
||
115 | |||
116 | |||
9561 | turbocat | 117 | typedef union{ |
118 | unsigned val; |
||
119 | struct{ |
||
120 | short x; |
||
121 | short y; |
||
122 | }; |
||
123 | }ksys_pos_t; |
||
124 | |||
125 | static inline |
||
126 | ksys_pos_t _ksys_screen_size() |
||
127 | { |
||
128 | ksys_pos_t size; |
||
129 | ksys_pos_t size_tmp; |
||
130 | __asm__ __volatile__( |
||
131 | "int $0x40" |
||
132 | :"=a"(size_tmp) |
||
133 | :"a"(14) |
||
134 | :"memory" |
||
135 | ); |
||
136 | size.x = size_tmp.y; |
||
137 | size.y = size_tmp.x; |
||
138 | return size; |
||
139 | } |
||
140 | |||
141 | |||
8210 | maxcodehac | 142 | /* |
143 | * Initialize the video and event subsystems -- determine native pixel format |
||
144 | */ |
||
145 | int SDL_VideoInit (const char *driver_name, Uint32 flags) |
||
146 | { |
||
147 | SDL_VideoDevice *video; |
||
148 | int index; |
||
149 | int i; |
||
150 | SDL_PixelFormat vformat; |
||
151 | Uint32 video_flags; |
||
152 | |||
153 | /* Toggle the event thread flags, based on OS requirements */ |
||
154 | #if defined(MUST_THREAD_EVENTS) |
||
155 | flags |= SDL_INIT_EVENTTHREAD; |
||
156 | #elif defined(CANT_THREAD_EVENTS) |
||
157 | if ( (flags & SDL_INIT_EVENTTHREAD) == SDL_INIT_EVENTTHREAD ) { |
||
158 | SDL_SetError("OS doesn't support threaded events"); |
||
159 | return(-1); |
||
160 | } |
||
161 | #endif |
||
162 | |||
163 | /* Check to make sure we don't overwrite 'current_video' */ |
||
164 | if ( current_video != NULL ) { |
||
165 | SDL_VideoQuit(); |
||
166 | } |
||
167 | |||
168 | /* Select the proper video driver */ |
||
169 | index = 0; |
||
170 | video = NULL; |
||
171 | if ( driver_name != NULL ) { |
||
172 | for ( i=0; bootstrap[i]; ++i ) { |
||
173 | if ( strncmp(bootstrap[i]->name, driver_name, |
||
174 | strlen(bootstrap[i]->name)) == 0 ) { |
||
175 | if ( bootstrap[i]->available() ) { |
||
176 | video = bootstrap[i]->create(index); |
||
177 | break; |
||
178 | } |
||
179 | } |
||
180 | } |
||
181 | } else { |
||
182 | for ( i=0; bootstrap[i]; ++i ) { |
||
183 | if ( bootstrap[i]->available() ) { |
||
184 | video = bootstrap[i]->create(index); |
||
185 | if ( video != NULL ) { |
||
186 | break; |
||
187 | } |
||
188 | } |
||
189 | } |
||
190 | } |
||
191 | if ( video == NULL ) { |
||
192 | SDL_SetError("No available video device"); |
||
193 | return(-1); |
||
194 | } |
||
195 | current_video = video; |
||
196 | current_video->name = bootstrap[i]->name; |
||
197 | |||
198 | /* Do some basic variable initialization */ |
||
199 | video->screen = NULL; |
||
200 | video->shadow = NULL; |
||
201 | video->visible = NULL; |
||
202 | video->physpal = NULL; |
||
203 | video->gammacols = NULL; |
||
204 | video->gamma = NULL; |
||
205 | video->wm_title = NULL; |
||
206 | video->wm_icon = NULL; |
||
207 | video->offset_x = 0; |
||
208 | video->offset_y = 0; |
||
209 | memset(&video->info, 0, (sizeof video->info)); |
||
210 | |||
211 | /* Set some very sane GL defaults */ |
||
212 | video->gl_config.driver_loaded = 0; |
||
213 | video->gl_config.dll_handle = NULL; |
||
214 | video->gl_config.red_size = 5; |
||
215 | #if 1 /* This seems to work on more video cards, as a default */ |
||
216 | video->gl_config.green_size = 5; |
||
217 | #else |
||
218 | video->gl_config.green_size = 6; |
||
219 | #endif |
||
220 | video->gl_config.blue_size = 5; |
||
221 | video->gl_config.alpha_size = 0; |
||
222 | video->gl_config.buffer_size = 0; |
||
223 | video->gl_config.depth_size = 16; |
||
224 | video->gl_config.stencil_size = 0; |
||
225 | video->gl_config.double_buffer = 1; |
||
226 | video->gl_config.accum_red_size = 0; |
||
227 | video->gl_config.accum_green_size = 0; |
||
228 | video->gl_config.accum_blue_size = 0; |
||
229 | video->gl_config.accum_alpha_size = 0; |
||
230 | |||
231 | /* Initialize the video subsystem */ |
||
232 | memset(&vformat, 0, sizeof(vformat)); |
||
233 | if ( video->VideoInit(video, &vformat) < 0 ) { |
||
234 | SDL_VideoQuit(); |
||
235 | return(-1); |
||
236 | } |
||
237 | |||
238 | /* Create a zero sized video surface of the appropriate format */ |
||
239 | video_flags = SDL_SWSURFACE; |
||
240 | SDL_VideoSurface = SDL_CreateRGBSurface(video_flags, 0, 0, |
||
241 | vformat.BitsPerPixel, |
||
242 | vformat.Rmask, vformat.Gmask, vformat.Bmask, 0); |
||
243 | if ( SDL_VideoSurface == NULL ) { |
||
244 | SDL_VideoQuit(); |
||
245 | return(-1); |
||
246 | } |
||
247 | SDL_PublicSurface = NULL; /* Until SDL_SetVideoMode() */ |
||
248 | |||
249 | #if 0 /* Don't change the current palette - may be used by other programs. |
||
250 | * The application can't do anything with the display surface until |
||
251 | * a video mode has been set anyway. :) |
||
252 | */ |
||
253 | /* If we have a palettized surface, create a default palette */ |
||
254 | if ( SDL_VideoSurface->format->palette ) { |
||
255 | SDL_PixelFormat *vf = SDL_VideoSurface->format; |
||
256 | SDL_DitherColors(vf->palette->colors, vf->BitsPerPixel); |
||
257 | video->SetColors(video, |
||
258 | 0, vf->palette->ncolors, vf->palette->colors); |
||
259 | } |
||
260 | #endif |
||
261 | video->info.vfmt = SDL_VideoSurface->format; |
||
9561 | turbocat | 262 | |
263 | ksys_pos_t screen_s = _ksys_screen_size(); |
||
264 | video->info.current_h = screen_s.y; |
||
265 | video->info.current_w = screen_s.x; |
||
8210 | maxcodehac | 266 | |
267 | /* Start the event loop */ |
||
268 | if ( SDL_StartEventLoop(flags) < 0 ) { |
||
269 | SDL_VideoQuit(); |
||
270 | return(-1); |
||
271 | } |
||
272 | SDL_CursorInit(flags & SDL_INIT_EVENTTHREAD); |
||
273 | |||
274 | /* We're ready to go! */ |
||
275 | return(0); |
||
276 | } |
||
277 | |||
278 | char *SDL_VideoDriverName(char *namebuf, int maxlen) |
||
279 | { |
||
280 | if ( current_video != NULL ) { |
||
281 | strncpy(namebuf, current_video->name, maxlen-1); |
||
282 | namebuf[maxlen-1] = '\0'; |
||
283 | return(namebuf); |
||
284 | } |
||
285 | return(NULL); |
||
286 | } |
||
287 | |||
288 | /* |
||
289 | * Get the current display surface |
||
290 | */ |
||
291 | SDL_Surface *SDL_GetVideoSurface(void) |
||
292 | { |
||
293 | SDL_Surface *visible; |
||
294 | |||
295 | visible = NULL; |
||
296 | if ( current_video ) { |
||
297 | visible = current_video->visible; |
||
298 | } |
||
299 | return(visible); |
||
300 | } |
||
301 | |||
302 | /* |
||
303 | * Get the current information about the video hardware |
||
304 | */ |
||
305 | const SDL_VideoInfo *SDL_GetVideoInfo(void) |
||
306 | { |
||
307 | const SDL_VideoInfo *info; |
||
308 | |||
309 | info = NULL; |
||
310 | if ( current_video ) { |
||
311 | info = ¤t_video->info; |
||
312 | } |
||
313 | return(info); |
||
314 | } |
||
315 | |||
316 | /* |
||
317 | * Return a pointer to an array of available screen dimensions for the |
||
318 | * given format, sorted largest to smallest. Returns NULL if there are |
||
319 | * no dimensions available for a particular format, or (SDL_Rect **)-1 |
||
320 | * if any dimension is okay for the given format. If 'format' is NULL, |
||
321 | * the mode list will be for the format given by SDL_GetVideoInfo()->vfmt |
||
322 | */ |
||
323 | SDL_Rect ** SDL_ListModes (SDL_PixelFormat *format, Uint32 flags) |
||
324 | { |
||
325 | SDL_VideoDevice *video = current_video; |
||
326 | SDL_VideoDevice *this = current_video; |
||
327 | SDL_Rect **modes; |
||
328 | |||
329 | modes = NULL; |
||
330 | if ( SDL_VideoSurface ) { |
||
331 | if ( format == NULL ) { |
||
332 | format = SDL_VideoSurface->format; |
||
333 | } |
||
334 | modes = video->ListModes(this, format, flags); |
||
335 | } |
||
336 | return(modes); |
||
337 | } |
||
338 | |||
339 | /* |
||
340 | * Check to see if a particular video mode is supported. |
||
341 | * It returns 0 if the requested mode is not supported under any bit depth, |
||
342 | * or returns the bits-per-pixel of the closest available mode with the |
||
343 | * given width and height. If this bits-per-pixel is different from the |
||
344 | * one used when setting the video mode, SDL_SetVideoMode() will succeed, |
||
345 | * but will emulate the requested bits-per-pixel with a shadow surface. |
||
346 | */ |
||
347 | static Uint8 SDL_closest_depths[4][8] = { |
||
348 | /* 8 bit closest depth ordering */ |
||
349 | { 0, 8, 16, 15, 32, 24, 0, 0 }, |
||
350 | /* 15,16 bit closest depth ordering */ |
||
351 | { 0, 16, 15, 32, 24, 8, 0, 0 }, |
||
352 | /* 24 bit closest depth ordering */ |
||
353 | { 0, 24, 32, 16, 15, 8, 0, 0 }, |
||
354 | /* 32 bit closest depth ordering */ |
||
355 | { 0, 32, 16, 15, 24, 8, 0, 0 } |
||
356 | }; |
||
357 | |||
358 | int SDL_VideoModeOK (int width, int height, int bpp, Uint32 flags) |
||
359 | { |
||
360 | int table, b, i; |
||
361 | int supported; |
||
362 | SDL_PixelFormat format; |
||
363 | SDL_Rect **sizes; |
||
364 | |||
365 | /* Currently 1 and 4 bpp are not supported */ |
||
366 | if ( bpp < 8 || bpp > 32 ) { |
||
367 | return(0); |
||
368 | } |
||
369 | if ( (width == 0) || (height == 0) ) { |
||
370 | return(0); |
||
371 | } |
||
372 | |||
373 | /* Search through the list valid of modes */ |
||
374 | memset(&format, 0, sizeof(format)); |
||
375 | supported = 0; |
||
376 | table = ((bpp+7)/8)-1; |
||
377 | SDL_closest_depths[table][0] = bpp; |
||
378 | SDL_closest_depths[table][7] = 0; |
||
379 | for ( b = 0; !supported && SDL_closest_depths[table][b]; ++b ) { |
||
380 | format.BitsPerPixel = SDL_closest_depths[table][b]; |
||
381 | sizes = SDL_ListModes(&format, flags); |
||
382 | if ( sizes == (SDL_Rect **)0 ) { |
||
383 | /* No sizes supported at this bit-depth */ |
||
384 | continue; |
||
385 | } else |
||
386 | #ifdef macintosh /* MPW optimization bug? */ |
||
387 | if ( (sizes == (SDL_Rect **)0xFFFFFFFF) || |
||
388 | #else |
||
389 | if ( (sizes == (SDL_Rect **)-1) || |
||
390 | #endif |
||
391 | current_video->handles_any_size ) { |
||
392 | /* Any size supported at this bit-depth */ |
||
393 | supported = 1; |
||
394 | continue; |
||
395 | } else |
||
396 | for ( i=0; sizes[i]; ++i ) { |
||
397 | if ((sizes[i]->w == width) && (sizes[i]->h == height)) { |
||
398 | supported = 1; |
||
399 | break; |
||
400 | } |
||
401 | } |
||
402 | } |
||
403 | if ( supported ) { |
||
404 | --b; |
||
405 | return(SDL_closest_depths[table][b]); |
||
406 | } else { |
||
407 | return(0); |
||
408 | } |
||
409 | } |
||
410 | |||
411 | /* |
||
412 | * Get the closest non-emulated video mode to the one requested |
||
413 | */ |
||
414 | static int SDL_GetVideoMode (int *w, int *h, int *BitsPerPixel, Uint32 flags) |
||
415 | { |
||
416 | int table, b, i; |
||
417 | int supported; |
||
418 | int native_bpp; |
||
419 | SDL_PixelFormat format; |
||
420 | SDL_Rect **sizes; |
||
421 | |||
422 | /* Try the original video mode, get the closest depth */ |
||
423 | native_bpp = SDL_VideoModeOK(*w, *h, *BitsPerPixel, flags); |
||
424 | if ( native_bpp == *BitsPerPixel ) { |
||
425 | return(1); |
||
426 | } |
||
427 | if ( native_bpp > 0 ) { |
||
428 | *BitsPerPixel = native_bpp; |
||
429 | return(1); |
||
430 | } |
||
431 | |||
432 | /* No exact size match at any depth, look for closest match */ |
||
433 | memset(&format, 0, sizeof(format)); |
||
434 | supported = 0; |
||
435 | table = ((*BitsPerPixel+7)/8)-1; |
||
436 | SDL_closest_depths[table][0] = *BitsPerPixel; |
||
437 | SDL_closest_depths[table][7] = SDL_VideoSurface->format->BitsPerPixel; |
||
438 | for ( b = 0; !supported && SDL_closest_depths[table][b]; ++b ) { |
||
439 | format.BitsPerPixel = SDL_closest_depths[table][b]; |
||
440 | sizes = SDL_ListModes(&format, flags); |
||
441 | if ( sizes == (SDL_Rect **)0 ) { |
||
442 | /* No sizes supported at this bit-depth */ |
||
443 | continue; |
||
444 | } |
||
445 | for ( i=0; sizes[i]; ++i ) { |
||
446 | if ((sizes[i]->w < *w) || (sizes[i]->h < *h)) { |
||
447 | if ( i > 0 ) { |
||
448 | --i; |
||
449 | *w = sizes[i]->w; |
||
450 | *h = sizes[i]->h; |
||
451 | *BitsPerPixel = SDL_closest_depths[table][b]; |
||
452 | supported = 1; |
||
453 | } else { |
||
454 | /* Largest mode too small... */; |
||
455 | } |
||
456 | break; |
||
457 | } |
||
458 | } |
||
459 | if ( (i > 0) && ! sizes[i] ) { |
||
460 | /* The smallest mode was larger than requested, OK */ |
||
461 | --i; |
||
462 | *w = sizes[i]->w; |
||
463 | *h = sizes[i]->h; |
||
464 | *BitsPerPixel = SDL_closest_depths[table][b]; |
||
465 | supported = 1; |
||
466 | } |
||
467 | } |
||
468 | if ( ! supported ) { |
||
469 | SDL_SetError("No video mode large enough for %dx%d", *w, *h); |
||
470 | } |
||
471 | return(supported); |
||
472 | } |
||
473 | |||
474 | /* This should probably go somewhere else -- like SDL_surface.c */ |
||
475 | static void SDL_ClearSurface(SDL_Surface *surface) |
||
476 | { |
||
477 | Uint32 black; |
||
478 | |||
479 | black = SDL_MapRGB(surface->format, 0, 0, 0); |
||
480 | SDL_FillRect(surface, NULL, black); |
||
481 | if ((surface->flags&SDL_HWSURFACE) && (surface->flags&SDL_DOUBLEBUF)) { |
||
482 | SDL_Flip(surface); |
||
483 | SDL_FillRect(surface, NULL, black); |
||
484 | } |
||
485 | SDL_Flip(surface); |
||
486 | } |
||
487 | |||
488 | /* |
||
489 | * Create a shadow surface suitable for fooling the app. :-) |
||
490 | */ |
||
491 | static void SDL_CreateShadowSurface(int depth) |
||
492 | { |
||
493 | Uint32 Rmask, Gmask, Bmask; |
||
494 | |||
495 | /* Allocate the shadow surface */ |
||
496 | if ( depth == (SDL_VideoSurface->format)->BitsPerPixel ) { |
||
497 | Rmask = (SDL_VideoSurface->format)->Rmask; |
||
498 | Gmask = (SDL_VideoSurface->format)->Gmask; |
||
499 | Bmask = (SDL_VideoSurface->format)->Bmask; |
||
500 | } else { |
||
501 | Rmask = Gmask = Bmask = 0; |
||
502 | } |
||
503 | SDL_ShadowSurface = SDL_CreateRGBSurface(SDL_SWSURFACE, |
||
504 | SDL_VideoSurface->w, SDL_VideoSurface->h, |
||
505 | depth, Rmask, Gmask, Bmask, 0); |
||
506 | if ( SDL_ShadowSurface == NULL ) { |
||
507 | return; |
||
508 | } |
||
509 | |||
510 | /* 8-bit shadow surfaces report that they have exclusive palette */ |
||
511 | if ( SDL_ShadowSurface->format->palette ) { |
||
512 | SDL_ShadowSurface->flags |= SDL_HWPALETTE; |
||
513 | if ( depth == (SDL_VideoSurface->format)->BitsPerPixel ) { |
||
514 | memcpy(SDL_ShadowSurface->format->palette->colors, |
||
515 | SDL_VideoSurface->format->palette->colors, |
||
516 | SDL_VideoSurface->format->palette->ncolors* |
||
517 | sizeof(SDL_Color)); |
||
518 | } else { |
||
519 | SDL_DitherColors( |
||
520 | SDL_ShadowSurface->format->palette->colors, depth); |
||
521 | } |
||
522 | } |
||
523 | |||
524 | /* If the video surface is resizable, the shadow should say so */ |
||
525 | if ( (SDL_VideoSurface->flags & SDL_RESIZABLE) == SDL_RESIZABLE ) { |
||
526 | SDL_ShadowSurface->flags |= SDL_RESIZABLE; |
||
527 | } |
||
528 | /* If the video surface has no frame, the shadow should say so */ |
||
529 | if ( (SDL_VideoSurface->flags & SDL_NOFRAME) == SDL_NOFRAME ) { |
||
530 | SDL_ShadowSurface->flags |= SDL_NOFRAME; |
||
531 | } |
||
532 | /* If the video surface is fullscreen, the shadow should say so */ |
||
533 | if ( (SDL_VideoSurface->flags & SDL_FULLSCREEN) == SDL_FULLSCREEN ) { |
||
534 | SDL_ShadowSurface->flags |= SDL_FULLSCREEN; |
||
535 | } |
||
536 | /* If the video surface is flippable, the shadow should say so */ |
||
537 | if ( (SDL_VideoSurface->flags & SDL_DOUBLEBUF) == SDL_DOUBLEBUF ) { |
||
538 | SDL_ShadowSurface->flags |= SDL_DOUBLEBUF; |
||
539 | } |
||
540 | return; |
||
541 | } |
||
542 | |||
543 | /* |
||
544 | * Set the requested video mode, allocating a shadow buffer if necessary. |
||
545 | */ |
||
546 | SDL_Surface * SDL_SetVideoMode (int width, int height, int bpp, Uint32 flags) |
||
547 | { |
||
548 | SDL_VideoDevice *video, *this; |
||
549 | SDL_Surface *prev_mode, *mode; |
||
550 | int video_w; |
||
551 | int video_h; |
||
552 | int video_bpp; |
||
553 | int is_opengl; |
||
554 | SDL_GrabMode saved_grab; |
||
555 | |||
556 | /* Start up the video driver, if necessary.. |
||
557 | WARNING: This is the only function protected this way! |
||
558 | */ |
||
559 | if ( ! current_video ) { |
||
560 | if ( SDL_Init(SDL_INIT_VIDEO|SDL_INIT_NOPARACHUTE) < 0 ) { |
||
561 | return(NULL); |
||
562 | } |
||
563 | } |
||
564 | this = video = current_video; |
||
565 | |||
566 | /* Default to the current video bpp */ |
||
567 | if ( bpp == 0 ) { |
||
568 | flags |= SDL_ANYFORMAT; |
||
569 | bpp = SDL_VideoSurface->format->BitsPerPixel; |
||
570 | } |
||
571 | |||
572 | /* Get a good video mode, the closest one possible */ |
||
573 | video_w = width; |
||
574 | video_h = height; |
||
575 | video_bpp = bpp; |
||
576 | if ( ! SDL_GetVideoMode(&video_w, &video_h, &video_bpp, flags) ) { |
||
577 | return(NULL); |
||
578 | } |
||
579 | |||
580 | /* Check the requested flags */ |
||
581 | /* There's no palette in > 8 bits-per-pixel mode */ |
||
582 | if ( video_bpp > 8 ) { |
||
583 | flags &= ~SDL_HWPALETTE; |
||
584 | } |
||
585 | #if 0 |
||
586 | if ( (flags&SDL_FULLSCREEN) != SDL_FULLSCREEN ) { |
||
587 | /* There's no windowed double-buffering */ |
||
588 | flags &= ~SDL_DOUBLEBUF; |
||
589 | } |
||
590 | #endif |
||
591 | if ( (flags&SDL_DOUBLEBUF) == SDL_DOUBLEBUF ) { |
||
592 | /* Use hardware surfaces when double-buffering */ |
||
593 | flags |= SDL_HWSURFACE; |
||
594 | } |
||
595 | |||
596 | is_opengl = ( ( flags & SDL_OPENGL ) == SDL_OPENGL ); |
||
597 | if ( is_opengl ) { |
||
598 | /* These flags are for 2D video modes only */ |
||
599 | flags &= ~(SDL_HWSURFACE|SDL_DOUBLEBUF); |
||
600 | } |
||
601 | |||
602 | /* Reset the keyboard here so event callbacks can run */ |
||
603 | SDL_ResetKeyboard(); |
||
604 | |||
605 | /* Clean up any previous video mode */ |
||
606 | if ( SDL_PublicSurface != NULL ) { |
||
607 | SDL_PublicSurface = NULL; |
||
608 | } |
||
609 | if ( SDL_ShadowSurface != NULL ) { |
||
610 | SDL_Surface *ready_to_go; |
||
611 | ready_to_go = SDL_ShadowSurface; |
||
612 | SDL_ShadowSurface = NULL; |
||
613 | SDL_FreeSurface(ready_to_go); |
||
614 | } |
||
615 | if ( video->physpal ) { |
||
616 | free(video->physpal->colors); |
||
617 | free(video->physpal); |
||
618 | video->physpal = NULL; |
||
619 | } |
||
620 | if( video->gammacols) { |
||
621 | free(video->gammacols); |
||
622 | video->gammacols = NULL; |
||
623 | } |
||
624 | |||
625 | /* Save the previous grab state and turn off grab for mode switch */ |
||
626 | saved_grab = SDL_WM_GrabInputOff(); |
||
627 | |||
628 | /* Try to set the video mode, along with offset and clipping */ |
||
629 | prev_mode = SDL_VideoSurface; |
||
630 | SDL_LockCursor(); |
||
631 | SDL_VideoSurface = NULL; /* In case it's freed by driver */ |
||
632 | mode = video->SetVideoMode(this, prev_mode,video_w,video_h,video_bpp,flags); |
||
633 | if ( mode ) { /* Prevent resize events from mode change */ |
||
634 | SDL_PrivateResize(mode->w, mode->h); |
||
635 | } |
||
636 | /* |
||
637 | * rcg11292000 |
||
638 | * If you try to set an SDL_OPENGL surface, and fail to find a |
||
639 | * matching visual, then the next call to SDL_SetVideoMode() |
||
640 | * will segfault, since we no longer point to a dummy surface, |
||
641 | * but rather NULL. |
||
642 | * Sam 11/29/00 |
||
643 | * WARNING, we need to make sure that the previous mode hasn't |
||
644 | * already been freed by the video driver. What do we do in |
||
645 | * that case? Should we call SDL_VideoInit() again? |
||
646 | */ |
||
647 | SDL_VideoSurface = (mode != NULL) ? mode : prev_mode; |
||
648 | |||
649 | if ( (mode != NULL) && (!is_opengl) ) { |
||
650 | /* Sanity check */ |
||
651 | if ( (mode->w < width) || (mode->h < height) ) { |
||
652 | SDL_SetError("Video mode smaller than requested"); |
||
653 | return(NULL); |
||
654 | } |
||
655 | |||
656 | /* If we have a palettized surface, create a default palette */ |
||
657 | if ( mode->format->palette ) { |
||
658 | SDL_PixelFormat *vf = mode->format; |
||
659 | SDL_DitherColors(vf->palette->colors, vf->BitsPerPixel); |
||
660 | video->SetColors(this, 0, vf->palette->ncolors, |
||
661 | vf->palette->colors); |
||
662 | } |
||
663 | |||
664 | /* Clear the surface to black */ |
||
665 | video->offset_x = 0; |
||
666 | video->offset_y = 0; |
||
667 | mode->offset = 0; |
||
668 | SDL_SetClipRect(mode, NULL); |
||
669 | SDL_ClearSurface(mode); |
||
670 | |||
671 | /* Now adjust the offsets to match the desired mode */ |
||
672 | video->offset_x = (mode->w-width)/2; |
||
673 | video->offset_y = (mode->h-height)/2; |
||
674 | mode->offset = video->offset_y*mode->pitch + |
||
675 | video->offset_x*mode->format->BytesPerPixel; |
||
676 | #ifdef DEBUG_VIDEO |
||
677 | SDL_printf("Requested mode: %dx%dx%d, obtained mode %dx%dx%d (offset %d)\n", |
||
678 | width, height, bpp, |
||
679 | mode->w, mode->h, mode->format->BitsPerPixel, mode->offset); |
||
680 | #endif |
||
681 | mode->w = width; |
||
682 | mode->h = height; |
||
683 | SDL_SetClipRect(mode, NULL); |
||
684 | } |
||
685 | SDL_ResetCursor(); |
||
686 | SDL_UnlockCursor(); |
||
687 | |||
688 | /* If we failed setting a video mode, return NULL... (Uh Oh!) */ |
||
689 | if ( mode == NULL ) { |
||
690 | return(NULL); |
||
691 | } |
||
692 | |||
693 | /* If there is no window manager, set the SDL_NOFRAME flag */ |
||
694 | if ( ! video->info.wm_available ) { |
||
695 | mode->flags |= SDL_NOFRAME; |
||
696 | } |
||
697 | |||
698 | /* Reset the mouse cursor and grab for new video mode */ |
||
699 | SDL_SetCursor(NULL); |
||
700 | if ( video->UpdateMouse ) { |
||
701 | video->UpdateMouse(this); |
||
702 | } |
||
703 | SDL_WM_GrabInput(saved_grab); |
||
704 | SDL_GetRelativeMouseState(NULL, NULL); /* Clear first large delta */ |
||
705 | |||
706 | /* If we're running OpenGL, make the context current */ |
||
707 | if ( (video->screen->flags & SDL_OPENGL) && |
||
708 | video->GL_MakeCurrent ) { |
||
709 | if ( video->GL_MakeCurrent(this) < 0 ) { |
||
710 | return(NULL); |
||
711 | } |
||
712 | } |
||
713 | |||
714 | /* Set up a fake SDL surface for OpenGL "blitting" */ |
||
715 | if ( (flags & SDL_OPENGLBLIT) == SDL_OPENGLBLIT ) { |
||
716 | /* Load GL functions for performing the texture updates */ |
||
717 | #ifdef HAVE_OPENGL |
||
718 | #define SDL_PROC(ret,func,params) \ |
||
719 | do { \ |
||
720 | video->func = SDL_GL_GetProcAddress(#func); \ |
||
721 | if ( ! video->func ) { \ |
||
722 | SDL_SetError("Couldn't load GL function: %s\n", #func); \ |
||
723 | return(NULL); \ |
||
724 | } \ |
||
725 | } while ( 0 ); |
||
726 | #include "SDL_glfuncs.h" |
||
727 | #undef SDL_PROC |
||
728 | |||
729 | /* Create a software surface for blitting */ |
||
730 | #ifdef GL_VERSION_1_2 |
||
731 | /* If the implementation either supports the packed pixels |
||
732 | extension, or implements the core OpenGL 1.2 API, it will |
||
733 | support the GL_UNSIGNED_SHORT_5_6_5 texture format. |
||
734 | */ |
||
735 | if ( (bpp == 16) && |
||
736 | (strstr((const char *)video->glGetString(GL_EXTENSIONS), |
||
737 | "GL_EXT_packed_pixels") || |
||
738 | (strncmp((const char *)video->glGetString(GL_VERSION), |
||
739 | "1.2", 3) == 0)) ) |
||
740 | { |
||
741 | video->is_32bit = 0; |
||
742 | SDL_VideoSurface = SDL_CreateRGBSurface( |
||
743 | flags, |
||
744 | width, |
||
745 | height, |
||
746 | 16, |
||
747 | 31 << 11, |
||
748 | 63 << 5, |
||
749 | 31, |
||
750 | |||
751 | ); |
||
752 | } |
||
753 | else |
||
754 | #endif /* OpenGL 1.2 */ |
||
755 | { |
||
756 | video->is_32bit = 1; |
||
757 | SDL_VideoSurface = SDL_CreateRGBSurface( |
||
758 | flags, |
||
759 | width, |
||
760 | height, |
||
761 | 32, |
||
762 | #if SDL_BYTEORDER == SDL_LIL_ENDIAN |
||
763 | 0x000000FF, |
||
764 | 0x0000FF00, |
||
765 | 0x00FF0000, |
||
766 | 0xFF000000 |
||
767 | #else |
||
768 | 0xFF000000, |
||
769 | 0x00FF0000, |
||
770 | 0x0000FF00, |
||
771 | 0x000000FF |
||
772 | #endif |
||
773 | ); |
||
774 | } |
||
775 | if ( ! SDL_VideoSurface ) { |
||
776 | return(NULL); |
||
777 | } |
||
778 | SDL_VideoSurface->flags = mode->flags | SDL_OPENGLBLIT; |
||
779 | |||
780 | /* Free the original video mode surface (is this safe?) */ |
||
781 | SDL_FreeSurface(mode); |
||
782 | |||
783 | /* Set the surface completely opaque & white by default */ |
||
784 | memset( SDL_VideoSurface->pixels, 255, SDL_VideoSurface->h * SDL_VideoSurface->pitch ); |
||
785 | video->glGenTextures( 1, &video->texture ); |
||
786 | video->glBindTexture( GL_TEXTURE_2D, video->texture ); |
||
787 | video->glTexImage2D( |
||
788 | GL_TEXTURE_2D, |
||
789 | 0, |
||
790 | video->is_32bit ? GL_RGBA : GL_RGB, |
||
791 | 256, |
||
792 | 256, |
||
793 | 0, |
||
794 | video->is_32bit ? GL_RGBA : GL_RGB, |
||
795 | #ifdef GL_VERSION_1_2 |
||
796 | video->is_32bit ? GL_UNSIGNED_BYTE : GL_UNSIGNED_SHORT_5_6_5, |
||
797 | #else |
||
798 | GL_UNSIGNED_BYTE, |
||
799 | #endif |
||
800 | NULL); |
||
801 | |||
802 | video->UpdateRects = SDL_GL_UpdateRectsLock; |
||
803 | #else |
||
804 | SDL_SetError("Somebody forgot to #define HAVE_OPENGL"); |
||
805 | return(NULL); |
||
806 | #endif |
||
807 | } |
||
808 | |||
809 | /* Create a shadow surface if necessary */ |
||
810 | /* There are three conditions under which we create a shadow surface: |
||
811 | 1. We need a particular bits-per-pixel that we didn't get. |
||
812 | 2. We need a hardware palette and didn't get one. |
||
813 | 3. We need a software surface and got a hardware surface. |
||
814 | */ |
||
815 | if ( !(SDL_VideoSurface->flags & SDL_OPENGL) && |
||
816 | ( |
||
817 | ( !(flags&SDL_ANYFORMAT) && |
||
818 | (SDL_VideoSurface->format->BitsPerPixel != bpp)) || |
||
819 | ( (flags&SDL_HWPALETTE) && |
||
820 | !(SDL_VideoSurface->flags&SDL_HWPALETTE)) || |
||
821 | /* If the surface is in hardware, video writes are visible |
||
822 | as soon as they are performed, so we need to buffer them |
||
823 | */ |
||
824 | ( ((flags&SDL_HWSURFACE) == SDL_SWSURFACE) && |
||
825 | (SDL_VideoSurface->flags&SDL_HWSURFACE)) |
||
826 | ) ) { |
||
827 | SDL_CreateShadowSurface(bpp); |
||
828 | if ( SDL_ShadowSurface == NULL ) { |
||
829 | SDL_SetError("Couldn't create shadow surface"); |
||
830 | return(NULL); |
||
831 | } |
||
832 | SDL_PublicSurface = SDL_ShadowSurface; |
||
833 | } else { |
||
834 | SDL_PublicSurface = SDL_VideoSurface; |
||
835 | } |
||
836 | video->info.vfmt = SDL_VideoSurface->format; |
||
837 | |||
838 | /* We're done! */ |
||
839 | return(SDL_PublicSurface); |
||
840 | } |
||
841 | |||
842 | /* |
||
843 | * Convert a surface into the video pixel format. |
||
844 | */ |
||
845 | SDL_Surface * SDL_DisplayFormat (SDL_Surface *surface) |
||
846 | { |
||
847 | Uint32 flags; |
||
848 | |||
849 | if ( ! SDL_PublicSurface ) { |
||
850 | SDL_SetError("No video mode has been set"); |
||
851 | return(NULL); |
||
852 | } |
||
853 | /* Set the flags appropriate for copying to display surface */ |
||
854 | flags = (SDL_PublicSurface->flags&SDL_HWSURFACE); |
||
855 | #ifdef AUTORLE_DISPLAYFORMAT |
||
856 | flags |= (surface->flags & (SDL_SRCCOLORKEY|SDL_SRCALPHA)); |
||
857 | flags |= SDL_RLEACCELOK; |
||
858 | #else |
||
859 | flags |= surface->flags & (SDL_SRCCOLORKEY|SDL_SRCALPHA|SDL_RLEACCELOK); |
||
860 | #endif |
||
861 | return(SDL_ConvertSurface(surface, SDL_PublicSurface->format, flags)); |
||
862 | } |
||
863 | |||
864 | /* |
||
865 | * Convert a surface into a format that's suitable for blitting to |
||
866 | * the screen, but including an alpha channel. |
||
867 | */ |
||
868 | SDL_Surface *SDL_DisplayFormatAlpha(SDL_Surface *surface) |
||
869 | { |
||
870 | SDL_PixelFormat *vf; |
||
871 | SDL_PixelFormat *format; |
||
872 | SDL_Surface *converted; |
||
873 | Uint32 flags; |
||
874 | /* default to ARGB8888 */ |
||
875 | Uint32 amask = 0xff000000; |
||
876 | Uint32 rmask = 0x00ff0000; |
||
877 | Uint32 gmask = 0x0000ff00; |
||
878 | Uint32 bmask = 0x000000ff; |
||
879 | |||
880 | if ( ! SDL_PublicSurface ) { |
||
881 | SDL_SetError("No video mode has been set"); |
||
882 | return(NULL); |
||
883 | } |
||
884 | vf = SDL_PublicSurface->format; |
||
885 | |||
886 | switch(vf->BytesPerPixel) { |
||
887 | case 2: |
||
888 | /* For XGY5[56]5, use, AXGY8888, where {X, Y} = {R, B}. |
||
889 | For anything else (like ARGB4444) it doesn't matter |
||
890 | since we have no special code for it anyway */ |
||
891 | if ( (vf->Rmask == 0x1f) && |
||
892 | (vf->Bmask == 0xf800 || vf->Bmask == 0x7c00)) { |
||
893 | rmask = 0xff; |
||
894 | bmask = 0xff0000; |
||
895 | } |
||
896 | break; |
||
897 | |||
898 | case 3: |
||
899 | case 4: |
||
900 | /* Keep the video format, as long as the high 8 bits are |
||
901 | unused or alpha */ |
||
902 | if ( (vf->Rmask == 0xff) && (vf->Bmask == 0xff0000) ) { |
||
903 | rmask = 0xff; |
||
904 | bmask = 0xff0000; |
||
905 | } |
||
906 | break; |
||
907 | |||
908 | default: |
||
909 | /* We have no other optimised formats right now. When/if a new |
||
910 | optimised alpha format is written, add the converter here */ |
||
911 | break; |
||
912 | } |
||
913 | format = SDL_AllocFormat(32, rmask, gmask, bmask, amask); |
||
914 | flags = SDL_PublicSurface->flags & SDL_HWSURFACE; |
||
915 | flags |= surface->flags & (SDL_SRCALPHA | SDL_RLEACCELOK); |
||
916 | converted = SDL_ConvertSurface(surface, format, flags); |
||
917 | SDL_FreeFormat(format); |
||
918 | return(converted); |
||
919 | } |
||
920 | |||
921 | /* |
||
922 | * Update a specific portion of the physical screen |
||
923 | */ |
||
924 | void SDL_UpdateRect(SDL_Surface *screen, Sint32 x, Sint32 y, Uint32 w, Uint32 h) |
||
925 | { |
||
926 | if ( screen ) { |
||
927 | SDL_Rect rect; |
||
928 | |||
929 | /* Perform some checking */ |
||
930 | if ( w == 0 ) |
||
931 | w = screen->w; |
||
932 | if ( h == 0 ) |
||
933 | h = screen->h; |
||
934 | if ( (int)(x+w) > screen->w ) |
||
935 | return; |
||
936 | if ( (int)(y+h) > screen->h ) |
||
937 | return; |
||
938 | |||
939 | /* Fill the rectangle */ |
||
940 | rect.x = x; |
||
941 | rect.y = y; |
||
942 | rect.w = w; |
||
943 | rect.h = h; |
||
944 | SDL_UpdateRects(screen, 1, &rect); |
||
945 | } |
||
946 | } |
||
947 | void SDL_UpdateRects (SDL_Surface *screen, int numrects, SDL_Rect *rects) |
||
948 | { |
||
949 | int i; |
||
950 | SDL_VideoDevice *video = current_video; |
||
951 | SDL_VideoDevice *this = current_video; |
||
952 | |||
953 | if ( screen == SDL_ShadowSurface ) { |
||
954 | /* Blit the shadow surface using saved mapping */ |
||
955 | SDL_Palette *pal = screen->format->palette; |
||
956 | SDL_Color *saved_colors = NULL; |
||
957 | if ( pal && !(SDL_VideoSurface->flags & SDL_HWPALETTE) ) { |
||
958 | /* simulated 8bpp, use correct physical palette */ |
||
959 | saved_colors = pal->colors; |
||
960 | if ( video->gammacols ) { |
||
961 | /* gamma-corrected palette */ |
||
962 | pal->colors = video->gammacols; |
||
963 | } else if ( video->physpal ) { |
||
964 | /* physical palette different from logical */ |
||
965 | pal->colors = video->physpal->colors; |
||
966 | } |
||
967 | } |
||
968 | if ( SHOULD_DRAWCURSOR(SDL_cursorstate) ) { |
||
969 | SDL_LockCursor(); |
||
970 | SDL_DrawCursor(SDL_ShadowSurface); |
||
971 | for ( i=0; i |
||
972 | SDL_LowerBlit(SDL_ShadowSurface, &rects[i], |
||
973 | SDL_VideoSurface, &rects[i]); |
||
974 | } |
||
975 | SDL_EraseCursor(SDL_ShadowSurface); |
||
976 | SDL_UnlockCursor(); |
||
977 | } else { |
||
978 | for ( i=0; i |
||
979 | SDL_LowerBlit(SDL_ShadowSurface, &rects[i], |
||
980 | SDL_VideoSurface, &rects[i]); |
||
981 | } |
||
982 | } |
||
983 | if ( saved_colors ) |
||
984 | pal->colors = saved_colors; |
||
985 | |||
986 | /* Fall through to video surface update */ |
||
987 | screen = SDL_VideoSurface; |
||
988 | } |
||
989 | if ( screen == SDL_VideoSurface ) { |
||
990 | /* Update the video surface */ |
||
991 | if ( screen->offset ) { |
||
992 | for ( i=0; i |
||
993 | rects[i].x += video->offset_x; |
||
994 | rects[i].y += video->offset_y; |
||
995 | } |
||
996 | video->UpdateRects(this, numrects, rects); |
||
997 | for ( i=0; i |
||
998 | rects[i].x -= video->offset_x; |
||
999 | rects[i].y -= video->offset_y; |
||
1000 | } |
||
1001 | } else { |
||
1002 | video->UpdateRects(this, numrects, rects); |
||
1003 | } |
||
1004 | } |
||
1005 | } |
||
1006 | |||
1007 | /* |
||
1008 | * Performs hardware double buffering, if possible, or a full update if not. |
||
1009 | */ |
||
1010 | int SDL_Flip(SDL_Surface *screen) |
||
1011 | { |
||
1012 | SDL_VideoDevice *video = current_video; |
||
1013 | /* Copy the shadow surface to the video surface */ |
||
1014 | if ( screen == SDL_ShadowSurface ) { |
||
1015 | SDL_Rect rect; |
||
1016 | SDL_Palette *pal = screen->format->palette; |
||
1017 | SDL_Color *saved_colors = NULL; |
||
1018 | if ( pal && !(SDL_VideoSurface->flags & SDL_HWPALETTE) ) { |
||
1019 | /* simulated 8bpp, use correct physical palette */ |
||
1020 | saved_colors = pal->colors; |
||
1021 | if ( video->gammacols ) { |
||
1022 | /* gamma-corrected palette */ |
||
1023 | pal->colors = video->gammacols; |
||
1024 | } else if ( video->physpal ) { |
||
1025 | /* physical palette different from logical */ |
||
1026 | pal->colors = video->physpal->colors; |
||
1027 | } |
||
1028 | } |
||
1029 | |||
1030 | rect.x = 0; |
||
1031 | rect.y = 0; |
||
1032 | rect.w = screen->w; |
||
1033 | rect.h = screen->h; |
||
1034 | SDL_LowerBlit(SDL_ShadowSurface,&rect, SDL_VideoSurface,&rect); |
||
1035 | |||
1036 | if ( saved_colors ) |
||
1037 | pal->colors = saved_colors; |
||
1038 | screen = SDL_VideoSurface; |
||
1039 | } |
||
1040 | if ( (screen->flags & SDL_DOUBLEBUF) == SDL_DOUBLEBUF ) { |
||
1041 | SDL_VideoDevice *this = current_video; |
||
1042 | return(video->FlipHWSurface(this, SDL_VideoSurface)); |
||
1043 | } else { |
||
1044 | SDL_UpdateRect(screen, 0, 0, 0, 0); |
||
1045 | } |
||
1046 | return(0); |
||
1047 | } |
||
1048 | |||
1049 | static void SetPalette_logical(SDL_Surface *screen, SDL_Color *colors, |
||
1050 | int firstcolor, int ncolors) |
||
1051 | { |
||
1052 | SDL_Palette *pal = screen->format->palette; |
||
1053 | SDL_Palette *vidpal; |
||
1054 | |||
1055 | if ( colors != (pal->colors + firstcolor) ) { |
||
1056 | memcpy(pal->colors + firstcolor, colors, |
||
1057 | ncolors * sizeof(*colors)); |
||
1058 | } |
||
1059 | |||
1060 | vidpal = SDL_VideoSurface->format->palette; |
||
1061 | if ( (screen == SDL_ShadowSurface) && vidpal ) { |
||
1062 | /* |
||
1063 | * This is a shadow surface, and the physical |
||
1064 | * framebuffer is also indexed. Propagate the |
||
1065 | * changes to its logical palette so that |
||
1066 | * updates are always identity blits |
||
1067 | */ |
||
1068 | memcpy(vidpal->colors + firstcolor, colors, |
||
1069 | ncolors * sizeof(*colors)); |
||
1070 | } |
||
1071 | SDL_FormatChanged(screen); |
||
1072 | } |
||
1073 | |||
1074 | static int SetPalette_physical(SDL_Surface *screen, |
||
1075 | SDL_Color *colors, int firstcolor, int ncolors) |
||
1076 | { |
||
1077 | SDL_VideoDevice *video = current_video; |
||
1078 | int gotall = 1; |
||
1079 | |||
1080 | if ( video->physpal ) { |
||
1081 | /* We need to copy the new colors, since we haven't |
||
1082 | * already done the copy in the logical set above. |
||
1083 | */ |
||
1084 | memcpy(video->physpal->colors + firstcolor, |
||
1085 | colors, ncolors * sizeof(*colors)); |
||
1086 | } |
||
1087 | if ( screen == SDL_ShadowSurface ) { |
||
1088 | if ( SDL_VideoSurface->flags & SDL_HWPALETTE ) { |
||
1089 | /* |
||
1090 | * The real screen is also indexed - set its physical |
||
1091 | * palette. The physical palette does not include the |
||
1092 | * gamma modification, we apply it directly instead, |
||
1093 | * but this only happens if we have hardware palette. |
||
1094 | */ |
||
1095 | screen = SDL_VideoSurface; |
||
1096 | } else { |
||
1097 | /* |
||
1098 | * The video surface is not indexed - invalidate any |
||
1099 | * active shadow-to-video blit mappings. |
||
1100 | */ |
||
1101 | if ( screen->map->dst == SDL_VideoSurface ) { |
||
1102 | SDL_InvalidateMap(screen->map); |
||
1103 | } |
||
1104 | if ( video->gamma ) { |
||
1105 | if( ! video->gammacols ) { |
||
1106 | SDL_Palette *pp = video->physpal; |
||
1107 | if(!pp) |
||
1108 | pp = screen->format->palette; |
||
1109 | video->gammacols = malloc(pp->ncolors |
||
1110 | * sizeof(SDL_Color)); |
||
1111 | SDL_ApplyGamma(video->gamma, |
||
1112 | pp->colors, |
||
1113 | video->gammacols, |
||
1114 | pp->ncolors); |
||
1115 | } else { |
||
1116 | SDL_ApplyGamma(video->gamma, colors, |
||
1117 | video->gammacols |
||
1118 | + firstcolor, |
||
1119 | ncolors); |
||
1120 | } |
||
1121 | } |
||
1122 | SDL_UpdateRect(screen, 0, 0, 0, 0); |
||
1123 | } |
||
1124 | } |
||
1125 | |||
1126 | if ( screen == SDL_VideoSurface ) { |
||
1127 | SDL_Color gcolors[256]; |
||
1128 | |||
1129 | if ( video->gamma ) { |
||
1130 | SDL_ApplyGamma(video->gamma, colors, gcolors, ncolors); |
||
1131 | colors = gcolors; |
||
1132 | } |
||
1133 | gotall = video->SetColors(video, firstcolor, ncolors, colors); |
||
1134 | if ( ! gotall ) { |
||
1135 | /* The video flags shouldn't have SDL_HWPALETTE, and |
||
1136 | the video driver is responsible for copying back the |
||
1137 | correct colors into the video surface palette. |
||
1138 | */ |
||
1139 | ; |
||
1140 | } |
||
1141 | SDL_CursorPaletteChanged(); |
||
1142 | } |
||
1143 | return gotall; |
||
1144 | } |
||
1145 | |||
1146 | /* |
||
1147 | * Set the physical and/or logical colormap of a surface: |
||
1148 | * Only the screen has a physical colormap. It determines what is actually |
||
1149 | * sent to the display. |
||
1150 | * The logical colormap is used to map blits to/from the surface. |
||
1151 | * 'which' is one or both of SDL_LOGPAL, SDL_PHYSPAL |
||
1152 | * |
||
1153 | * Return nonzero if all colours were set as requested, or 0 otherwise. |
||
1154 | */ |
||
1155 | int SDL_SetPalette(SDL_Surface *screen, int which, |
||
1156 | SDL_Color *colors, int firstcolor, int ncolors) |
||
1157 | { |
||
1158 | SDL_Palette *pal; |
||
1159 | int gotall; |
||
1160 | int palsize; |
||
1161 | |||
1162 | if ( ! current_video ) { |
||
1163 | return 0; |
||
1164 | } |
||
1165 | if ( screen != SDL_PublicSurface ) { |
||
1166 | /* only screens have physical palettes */ |
||
1167 | which &= ~SDL_PHYSPAL; |
||
1168 | } else if( (screen->flags & SDL_HWPALETTE) != SDL_HWPALETTE ) { |
||
1169 | /* hardware palettes required for split colormaps */ |
||
1170 | which |= SDL_PHYSPAL | SDL_LOGPAL; |
||
1171 | } |
||
1172 | |||
1173 | /* Verify the parameters */ |
||
1174 | pal = screen->format->palette; |
||
1175 | if( !pal ) { |
||
1176 | return 0; /* not a palettized surface */ |
||
1177 | } |
||
1178 | gotall = 1; |
||
1179 | palsize = 1 << screen->format->BitsPerPixel; |
||
1180 | if ( ncolors > (palsize - firstcolor) ) { |
||
1181 | ncolors = (palsize - firstcolor); |
||
1182 | gotall = 0; |
||
1183 | } |
||
1184 | |||
1185 | if ( which & SDL_LOGPAL ) { |
||
1186 | /* |
||
1187 | * Logical palette change: The actual screen isn't affected, |
||
1188 | * but the internal colormap is altered so that the |
||
1189 | * interpretation of the pixel values (for blits etc) is |
||
1190 | * changed. |
||
1191 | */ |
||
1192 | SetPalette_logical(screen, colors, firstcolor, ncolors); |
||
1193 | } |
||
1194 | if ( which & SDL_PHYSPAL ) { |
||
1195 | SDL_VideoDevice *video = current_video; |
||
1196 | /* |
||
1197 | * Physical palette change: This doesn't affect the |
||
1198 | * program's idea of what the screen looks like, but changes |
||
1199 | * its actual appearance. |
||
1200 | */ |
||
1201 | if(!video) |
||
1202 | return gotall; /* video not yet initialized */ |
||
1203 | if(!video->physpal && !(which & SDL_LOGPAL) ) { |
||
1204 | /* Lazy physical palette allocation */ |
||
1205 | int size; |
||
1206 | SDL_Palette *pp = malloc(sizeof(*pp)); |
||
1207 | current_video->physpal = pp; |
||
1208 | pp->ncolors = pal->ncolors; |
||
1209 | size = pp->ncolors * sizeof(SDL_Color); |
||
1210 | pp->colors = malloc(size); |
||
1211 | memcpy(pp->colors, pal->colors, size); |
||
1212 | } |
||
1213 | if ( ! SetPalette_physical(screen, |
||
1214 | colors, firstcolor, ncolors) ) { |
||
1215 | gotall = 0; |
||
1216 | } |
||
1217 | } |
||
1218 | return gotall; |
||
1219 | } |
||
1220 | |||
1221 | int SDL_SetColors(SDL_Surface *screen, SDL_Color *colors, int firstcolor, |
||
1222 | int ncolors) |
||
1223 | { |
||
1224 | return SDL_SetPalette(screen, SDL_LOGPAL | SDL_PHYSPAL, |
||
1225 | colors, firstcolor, ncolors); |
||
1226 | } |
||
1227 | |||
1228 | /* |
||
1229 | * Clean up the video subsystem |
||
1230 | */ |
||
1231 | void SDL_VideoQuit (void) |
||
1232 | { |
||
1233 | SDL_Surface *ready_to_go; |
||
1234 | |||
1235 | if ( current_video ) { |
||
1236 | SDL_VideoDevice *video = current_video; |
||
1237 | SDL_VideoDevice *this = current_video; |
||
1238 | |||
1239 | /* Halt event processing before doing anything else */ |
||
1240 | SDL_StopEventLoop(); |
||
1241 | |||
1242 | /* Clean up allocated window manager items */ |
||
1243 | if ( SDL_PublicSurface ) { |
||
1244 | SDL_PublicSurface = NULL; |
||
1245 | } |
||
1246 | SDL_CursorQuit(); |
||
1247 | |||
1248 | /* Just in case... */ |
||
1249 | SDL_WM_GrabInputOff(); |
||
1250 | |||
1251 | /* Clean up the system video */ |
||
1252 | video->VideoQuit(this); |
||
1253 | |||
1254 | /* Free any lingering surfaces */ |
||
1255 | ready_to_go = SDL_ShadowSurface; |
||
1256 | SDL_ShadowSurface = NULL; |
||
1257 | SDL_FreeSurface(ready_to_go); |
||
1258 | if ( SDL_VideoSurface != NULL ) { |
||
1259 | ready_to_go = SDL_VideoSurface; |
||
1260 | SDL_VideoSurface = NULL; |
||
1261 | SDL_FreeSurface(ready_to_go); |
||
1262 | } |
||
1263 | SDL_PublicSurface = NULL; |
||
1264 | |||
1265 | /* Clean up miscellaneous memory */ |
||
1266 | if ( video->physpal ) { |
||
1267 | free(video->physpal->colors); |
||
1268 | free(video->physpal); |
||
1269 | video->physpal = NULL; |
||
1270 | } |
||
1271 | if ( video->gammacols ) { |
||
1272 | free(video->gammacols); |
||
1273 | video->gammacols = NULL; |
||
1274 | } |
||
1275 | if ( video->gamma ) { |
||
1276 | free(video->gamma); |
||
1277 | video->gamma = NULL; |
||
1278 | } |
||
1279 | if ( video->wm_title != NULL ) { |
||
1280 | free(video->wm_title); |
||
1281 | video->wm_title = NULL; |
||
1282 | } |
||
1283 | if ( video->wm_icon != NULL ) { |
||
1284 | free(video->wm_icon); |
||
1285 | video->wm_icon = NULL; |
||
1286 | } |
||
1287 | |||
1288 | /* Finish cleaning up video subsystem */ |
||
1289 | video->free(this); |
||
1290 | current_video = NULL; |
||
1291 | } |
||
1292 | return; |
||
1293 | } |
||
1294 | |||
1295 | /* Load the GL driver library */ |
||
1296 | int SDL_GL_LoadLibrary(const char *path) |
||
1297 | { |
||
1298 | SDL_VideoDevice *video = current_video; |
||
1299 | SDL_VideoDevice *this = current_video; |
||
1300 | int retval; |
||
1301 | |||
1302 | retval = -1; |
||
1303 | if ( video && video->GL_LoadLibrary ) { |
||
1304 | retval = video->GL_LoadLibrary(this, path); |
||
1305 | } else { |
||
1306 | SDL_SetError("No dynamic GL support in video driver"); |
||
1307 | } |
||
1308 | return(retval); |
||
1309 | } |
||
1310 | |||
1311 | void *SDL_GL_GetProcAddress(const char* proc) |
||
1312 | { |
||
1313 | SDL_VideoDevice *video = current_video; |
||
1314 | SDL_VideoDevice *this = current_video; |
||
1315 | void *func; |
||
1316 | |||
1317 | func = NULL; |
||
1318 | if ( video->GL_GetProcAddress ) { |
||
1319 | if ( video->gl_config.driver_loaded ) { |
||
1320 | func = video->GL_GetProcAddress(this, proc); |
||
1321 | } else { |
||
1322 | SDL_SetError("No GL driver has been loaded"); |
||
1323 | } |
||
1324 | } else { |
||
1325 | SDL_SetError("No dynamic GL support in video driver"); |
||
1326 | } |
||
1327 | return func; |
||
1328 | } |
||
1329 | |||
1330 | /* Set the specified GL attribute for setting up a GL video mode */ |
||
1331 | int SDL_GL_SetAttribute( SDL_GLattr attr, int value ) |
||
1332 | { |
||
1333 | int retval; |
||
1334 | SDL_VideoDevice *video = current_video; |
||
1335 | |||
1336 | retval = 0; |
||
1337 | switch (attr) { |
||
1338 | case SDL_GL_RED_SIZE: |
||
1339 | video->gl_config.red_size = value; |
||
1340 | break; |
||
1341 | case SDL_GL_GREEN_SIZE: |
||
1342 | video->gl_config.green_size = value; |
||
1343 | break; |
||
1344 | case SDL_GL_BLUE_SIZE: |
||
1345 | video->gl_config.blue_size = value; |
||
1346 | break; |
||
1347 | case SDL_GL_ALPHA_SIZE: |
||
1348 | video->gl_config.alpha_size = value; |
||
1349 | break; |
||
1350 | case SDL_GL_DOUBLEBUFFER: |
||
1351 | video->gl_config.double_buffer = value; |
||
1352 | break; |
||
1353 | case SDL_GL_BUFFER_SIZE: |
||
1354 | video->gl_config.buffer_size = value; |
||
1355 | break; |
||
1356 | case SDL_GL_DEPTH_SIZE: |
||
1357 | video->gl_config.depth_size = value; |
||
1358 | break; |
||
1359 | case SDL_GL_STENCIL_SIZE: |
||
1360 | video->gl_config.stencil_size = value; |
||
1361 | break; |
||
1362 | case SDL_GL_ACCUM_RED_SIZE: |
||
1363 | video->gl_config.accum_red_size = value; |
||
1364 | break; |
||
1365 | case SDL_GL_ACCUM_GREEN_SIZE: |
||
1366 | video->gl_config.accum_green_size = value; |
||
1367 | break; |
||
1368 | case SDL_GL_ACCUM_BLUE_SIZE: |
||
1369 | video->gl_config.accum_blue_size = value; |
||
1370 | break; |
||
1371 | case SDL_GL_ACCUM_ALPHA_SIZE: |
||
1372 | video->gl_config.accum_alpha_size = value; |
||
1373 | break; |
||
1374 | default: |
||
1375 | SDL_SetError("Unknown OpenGL attribute"); |
||
1376 | retval = -1; |
||
1377 | break; |
||
1378 | } |
||
1379 | return(retval); |
||
1380 | } |
||
1381 | |||
1382 | /* Retrieve an attribute value from the windowing system. */ |
||
1383 | int SDL_GL_GetAttribute(SDL_GLattr attr, int* value) |
||
1384 | { |
||
1385 | int retval = -1; |
||
1386 | SDL_VideoDevice* video = current_video; |
||
1387 | SDL_VideoDevice* this = current_video; |
||
1388 | |||
1389 | if ( video->GL_GetAttribute ) { |
||
1390 | retval = this->GL_GetAttribute(this, attr, value); |
||
1391 | } else { |
||
1392 | *value = 0; |
||
1393 | SDL_SetError("GL_GetAttribute not supported"); |
||
1394 | } |
||
1395 | return retval; |
||
1396 | } |
||
1397 | |||
1398 | /* Perform a GL buffer swap on the current GL context */ |
||
1399 | void SDL_GL_SwapBuffers(void) |
||
1400 | { |
||
1401 | SDL_VideoDevice *video = current_video; |
||
1402 | SDL_VideoDevice *this = current_video; |
||
1403 | |||
1404 | if ( video->screen->flags & SDL_OPENGL ) { |
||
1405 | video->GL_SwapBuffers( this ); |
||
1406 | } |
||
1407 | } |
||
1408 | |||
1409 | /* Update rects with locking */ |
||
1410 | void SDL_GL_UpdateRectsLock(SDL_VideoDevice* this, int numrects, SDL_Rect *rects) |
||
1411 | { |
||
1412 | SDL_GL_Lock(); |
||
1413 | SDL_GL_UpdateRects(numrects, rects); |
||
1414 | SDL_GL_Unlock(); |
||
1415 | } |
||
1416 | |||
1417 | /* Update rects without state setting and changing (the caller is responsible for it) */ |
||
1418 | void SDL_GL_UpdateRects(int numrects, SDL_Rect *rects) |
||
1419 | { |
||
1420 | #ifdef HAVE_OPENGL |
||
1421 | SDL_VideoDevice *this = current_video; |
||
1422 | SDL_Rect update, tmp; |
||
1423 | int x, y, i; |
||
1424 | |||
1425 | for ( i = 0; i < numrects; i++ ) |
||
1426 | { |
||
1427 | tmp.y = rects[i].y; |
||
1428 | tmp.h = rects[i].h; |
||
1429 | for ( y = 0; y <= rects[i].h / 256; y++ ) |
||
1430 | { |
||
1431 | tmp.x = rects[i].x; |
||
1432 | tmp.w = rects[i].w; |
||
1433 | for ( x = 0; x <= rects[i].w / 256; x++ ) |
||
1434 | { |
||
1435 | update.x = tmp.x; |
||
1436 | update.y = tmp.y; |
||
1437 | update.w = tmp.w; |
||
1438 | update.h = tmp.h; |
||
1439 | |||
1440 | if ( update.w > 256 ) |
||
1441 | update.w = 256; |
||
1442 | |||
1443 | if ( update.h > 256 ) |
||
1444 | update.h = 256; |
||
1445 | |||
1446 | this->glFlush(); |
||
1447 | this->glTexSubImage2D( |
||
1448 | GL_TEXTURE_2D, |
||
1449 | 0, |
||
1450 | 0, |
||
1451 | 0, |
||
1452 | update.w, |
||
1453 | update.h, |
||
1454 | this->is_32bit? GL_RGBA : GL_RGB, |
||
1455 | #ifdef GL_VERSION_1_2 |
||
1456 | this->is_32bit ? GL_UNSIGNED_BYTE : GL_UNSIGNED_SHORT_5_6_5, |
||
1457 | #else |
||
1458 | GL_UNSIGNED_BYTE, |
||
1459 | #endif |
||
1460 | (Uint8 *)this->screen->pixels + |
||
1461 | this->screen->format->BytesPerPixel * update.x + |
||
1462 | update.y * this->screen->pitch ); |
||
1463 | |||
1464 | this->glFlush(); |
||
1465 | /* |
||
1466 | * Note the parens around the function name: |
||
1467 | * This is because some OpenGL implementations define glTexCoord etc |
||
1468 | * as macros, and we don't want them expanded here. |
||
1469 | */ |
||
1470 | this->glBegin(GL_TRIANGLE_STRIP); |
||
1471 | (this->glTexCoord2f)( 0.0, 0.0 ); |
||
1472 | (this->glVertex2i)( update.x, update.y ); |
||
1473 | (this->glTexCoord2f)( (float)(update.w / 256.0), 0.0 ); |
||
1474 | (this->glVertex2i)( update.x + update.w, update.y ); |
||
1475 | (this->glTexCoord2f)( 0.0, (float)(update.h / 256.0) ); |
||
1476 | (this->glVertex2i)( update.x, update.y + update.h ); |
||
1477 | (this->glTexCoord2f)( (float)(update.w / 256.0), (float)(update.h / 256.0) ); |
||
1478 | (this->glVertex2i)( update.x + update.w , update.y + update.h ); |
||
1479 | this->glEnd(); |
||
1480 | |||
1481 | tmp.x += 256; |
||
1482 | tmp.w -= 256; |
||
1483 | } |
||
1484 | tmp.y += 256; |
||
1485 | tmp.h -= 256; |
||
1486 | } |
||
1487 | } |
||
1488 | #endif |
||
1489 | } |
||
1490 | |||
1491 | /* Lock == save current state */ |
||
1492 | void SDL_GL_Lock() |
||
1493 | { |
||
1494 | #ifdef HAVE_OPENGL |
||
1495 | lock_count--; |
||
1496 | if (lock_count==-1) |
||
1497 | { |
||
1498 | SDL_VideoDevice *this = current_video; |
||
1499 | |||
1500 | this->glPushAttrib( GL_ALL_ATTRIB_BITS ); /* TODO: narrow range of what is saved */ |
||
1501 | this->glPushClientAttrib( GL_CLIENT_PIXEL_STORE_BIT ); |
||
1502 | |||
1503 | this->glEnable(GL_TEXTURE_2D); |
||
1504 | this->glEnable(GL_BLEND); |
||
1505 | this->glDisable(GL_FOG); |
||
1506 | this->glDisable(GL_ALPHA_TEST); |
||
1507 | this->glDisable(GL_DEPTH_TEST); |
||
1508 | this->glDisable(GL_SCISSOR_TEST); |
||
1509 | this->glDisable(GL_STENCIL_TEST); |
||
1510 | this->glDisable(GL_CULL_FACE); |
||
1511 | |||
1512 | this->glBindTexture( GL_TEXTURE_2D, this->texture ); |
||
1513 | this->glTexEnvf( GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE ); |
||
1514 | this->glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST ); |
||
1515 | this->glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST ); |
||
1516 | this->glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT ); |
||
1517 | this->glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT ); |
||
1518 | |||
1519 | this->glPixelStorei( GL_UNPACK_ROW_LENGTH, this->screen->pitch / this->screen->format->BytesPerPixel ); |
||
1520 | this->glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA); |
||
1521 | (this->glColor4f)(1.0, 1.0, 1.0, 1.0); /* Solaris workaround */ |
||
1522 | |||
1523 | this->glViewport(0, 0, this->screen->w, this->screen->h); |
||
1524 | this->glMatrixMode(GL_PROJECTION); |
||
1525 | this->glPushMatrix(); |
||
1526 | this->glLoadIdentity(); |
||
1527 | |||
1528 | this->glOrtho(0.0, (GLdouble) this->screen->w, (GLdouble) this->screen->h, 0.0, 0.0, 1.0); |
||
1529 | |||
1530 | this->glMatrixMode(GL_MODELVIEW); |
||
1531 | this->glPushMatrix(); |
||
1532 | this->glLoadIdentity(); |
||
1533 | } |
||
1534 | #endif |
||
1535 | } |
||
1536 | |||
1537 | /* Unlock == restore saved state */ |
||
1538 | void SDL_GL_Unlock() |
||
1539 | { |
||
1540 | #ifdef HAVE_OPENGL |
||
1541 | lock_count++; |
||
1542 | if (lock_count==0) |
||
1543 | { |
||
1544 | SDL_VideoDevice *this = current_video; |
||
1545 | |||
1546 | this->glPopMatrix(); |
||
1547 | this->glMatrixMode(GL_PROJECTION); |
||
1548 | this->glPopMatrix(); |
||
1549 | |||
1550 | this->glPopClientAttrib(); |
||
1551 | this->glPopAttrib(); |
||
1552 | } |
||
1553 | #endif |
||
1554 | } |
||
1555 | |||
1556 | /* |
||
1557 | * Sets/Gets the title and icon text of the display window, if any. |
||
1558 | */ |
||
1559 | void SDL_WM_SetCaption (const char *title, const char *icon) |
||
1560 | { |
||
1561 | SDL_VideoDevice *video = current_video; |
||
1562 | SDL_VideoDevice *this = current_video; |
||
1563 | |||
1564 | if ( video ) { |
||
1565 | if ( title ) { |
||
1566 | if ( video->wm_title ) { |
||
1567 | free(video->wm_title); |
||
1568 | } |
||
1569 | video->wm_title = (char *)malloc(strlen(title)+1); |
||
1570 | if ( video->wm_title != NULL ) { |
||
1571 | strcpy(video->wm_title, title); |
||
1572 | } |
||
1573 | } |
||
1574 | if ( icon ) { |
||
1575 | if ( video->wm_icon ) { |
||
1576 | free(video->wm_icon); |
||
1577 | } |
||
1578 | video->wm_icon = (char *)malloc(strlen(icon)+1); |
||
1579 | if ( video->wm_icon != NULL ) { |
||
1580 | strcpy(video->wm_icon, icon); |
||
1581 | } |
||
1582 | } |
||
1583 | if ( (title || icon) && (video->SetCaption != NULL) ) { |
||
1584 | video->SetCaption(this, video->wm_title,video->wm_icon); |
||
1585 | } |
||
1586 | } |
||
1587 | } |
||
1588 | void SDL_WM_GetCaption (char **title, char **icon) |
||
1589 | { |
||
1590 | SDL_VideoDevice *video = current_video; |
||
1591 | |||
1592 | if ( video ) { |
||
1593 | if ( title ) { |
||
1594 | *title = video->wm_title; |
||
1595 | } |
||
1596 | if ( icon ) { |
||
1597 | *icon = video->wm_icon; |
||
1598 | } |
||
1599 | } |
||
1600 | } |
||
1601 | |||
1602 | /* Utility function used by SDL_WM_SetIcon() */ |
||
1603 | static void CreateMaskFromColorKey(SDL_Surface *icon, Uint8 *mask) |
||
1604 | { |
||
1605 | int x, y; |
||
1606 | Uint32 colorkey; |
||
1607 | #define SET_MASKBIT(icon, x, y, mask) \ |
||
1608 | mask[(y*((icon->w+7)/8))+(x/8)] &= ~(0x01<<(7-(x%8))) |
||
1609 | |||
1610 | colorkey = icon->format->colorkey; |
||
1611 | switch (icon->format->BytesPerPixel) { |
||
1612 | case 1: { Uint8 *pixels; |
||
1613 | for ( y=0; y |
||
1614 | pixels = (Uint8 *)icon->pixels + y*icon->pitch; |
||
1615 | for ( x=0; x |
||
1616 | if ( *pixels++ == colorkey ) { |
||
1617 | SET_MASKBIT(icon, x, y, mask); |
||
1618 | } |
||
1619 | } |
||
1620 | } |
||
1621 | } |
||
1622 | break; |
||
1623 | |||
1624 | case 2: { Uint16 *pixels; |
||
1625 | for ( y=0; y |
||
1626 | pixels = (Uint16 *)icon->pixels + |
||
1627 | y*icon->pitch/2; |
||
1628 | for ( x=0; x |
||
1629 | if ( *pixels++ == colorkey ) { |
||
1630 | SET_MASKBIT(icon, x, y, mask); |
||
1631 | } |
||
1632 | } |
||
1633 | } |
||
1634 | } |
||
1635 | break; |
||
1636 | |||
1637 | case 4: { Uint32 *pixels; |
||
1638 | for ( y=0; y |
||
1639 | pixels = (Uint32 *)icon->pixels + |
||
1640 | y*icon->pitch/4; |
||
1641 | for ( x=0; x |
||
1642 | if ( *pixels++ == colorkey ) { |
||
1643 | SET_MASKBIT(icon, x, y, mask); |
||
1644 | } |
||
1645 | } |
||
1646 | } |
||
1647 | } |
||
1648 | break; |
||
1649 | } |
||
1650 | } |
||
1651 | |||
1652 | /* |
||
1653 | * Sets the window manager icon for the display window. |
||
1654 | */ |
||
1655 | void SDL_WM_SetIcon (SDL_Surface *icon, Uint8 *mask) |
||
1656 | { |
||
1657 | SDL_VideoDevice *video = current_video; |
||
1658 | SDL_VideoDevice *this = current_video; |
||
1659 | |||
1660 | if ( icon && video->SetIcon ) { |
||
1661 | /* Generate a mask if necessary, and create the icon! */ |
||
1662 | if ( mask == NULL ) { |
||
1663 | int mask_len = icon->h*(icon->w+7)/8; |
||
1664 | mask = (Uint8 *)malloc(mask_len); |
||
1665 | if ( mask == NULL ) { |
||
1666 | return; |
||
1667 | } |
||
1668 | memset(mask, ~0, mask_len); |
||
1669 | if ( icon->flags & SDL_SRCCOLORKEY ) { |
||
1670 | CreateMaskFromColorKey(icon, mask); |
||
1671 | } |
||
1672 | video->SetIcon(video, icon, mask); |
||
1673 | free(mask); |
||
1674 | } else { |
||
1675 | video->SetIcon(this, icon, mask); |
||
1676 | } |
||
1677 | } |
||
1678 | } |
||
1679 | |||
1680 | /* |
||
1681 | * Grab or ungrab the keyboard and mouse input. |
||
1682 | * This function returns the final grab mode after calling the |
||
1683 | * driver dependent function. |
||
1684 | */ |
||
1685 | static SDL_GrabMode SDL_WM_GrabInputRaw(SDL_GrabMode mode) |
||
1686 | { |
||
1687 | SDL_VideoDevice *video = current_video; |
||
1688 | SDL_VideoDevice *this = current_video; |
||
1689 | |||
1690 | /* Only do something if we have support for grabs */ |
||
1691 | /*if ( video->GrabInput == NULL ) { |
||
1692 | return(video->input_grab); |
||
1693 | }*/ |
||
1694 | |||
1695 | /* If the final grab mode if off, only then do we actually grab */ |
||
1696 | #ifdef DEBUG_GRAB |
||
1697 | SDL_printf("SDL_WM_GrabInputRaw(%d) ... ", mode); |
||
1698 | #endif |
||
1699 | /*if ( mode == SDL_GRAB_OFF ) { |
||
1700 | if ( video->input_grab != SDL_GRAB_OFF ) { |
||
1701 | mode = video->GrabInput(this, mode); |
||
1702 | } |
||
1703 | } else { |
||
1704 | if ( video->input_grab == SDL_GRAB_OFF ) { |
||
1705 | mode = video->GrabInput(this, mode); |
||
1706 | } |
||
1707 | }*/ |
||
1708 | if ( mode != video->input_grab ) { |
||
1709 | video->input_grab = mode; |
||
1710 | if ( video->CheckMouseMode ) { |
||
1711 | video->CheckMouseMode(this); |
||
1712 | } |
||
1713 | } |
||
1714 | #ifdef DEBUG_GRAB |
||
1715 | SDL_printf("Final mode %d\n", video->input_grab); |
||
1716 | #endif |
||
1717 | |||
1718 | /* Return the final grab state */ |
||
1719 | if ( mode >= SDL_GRAB_FULLSCREEN ) { |
||
1720 | mode -= SDL_GRAB_FULLSCREEN; |
||
1721 | } |
||
1722 | return(mode); |
||
1723 | } |
||
1724 | SDL_GrabMode SDL_WM_GrabInput(SDL_GrabMode mode) |
||
1725 | { |
||
1726 | SDL_VideoDevice *video = current_video; |
||
1727 | |||
1728 | /* If the video isn't initialized yet, we can't do anything */ |
||
1729 | if ( ! video ) { |
||
1730 | return SDL_GRAB_OFF; |
||
1731 | } |
||
1732 | |||
1733 | /* Return the current mode on query */ |
||
1734 | if ( mode == SDL_GRAB_QUERY ) { |
||
1735 | mode = video->input_grab; |
||
1736 | if ( mode >= SDL_GRAB_FULLSCREEN ) { |
||
1737 | mode -= SDL_GRAB_FULLSCREEN; |
||
1738 | } |
||
1739 | return(mode); |
||
1740 | } |
||
1741 | |||
1742 | #ifdef DEBUG_GRAB |
||
1743 | SDL_printf("SDL_WM_GrabInput(%d) ... ", mode); |
||
1744 | #endif |
||
1745 | /* If the video surface is fullscreen, we always grab */ |
||
1746 | if ( mode >= SDL_GRAB_FULLSCREEN ) { |
||
1747 | mode -= SDL_GRAB_FULLSCREEN; |
||
1748 | } |
||
1749 | if ( SDL_VideoSurface && (SDL_VideoSurface->flags & SDL_FULLSCREEN) ) { |
||
1750 | mode += SDL_GRAB_FULLSCREEN; |
||
1751 | } |
||
1752 | return(SDL_WM_GrabInputRaw(mode)); |
||
1753 | } |
||
1754 | static SDL_GrabMode SDL_WM_GrabInputOff(void) |
||
1755 | { |
||
1756 | SDL_GrabMode mode; |
||
1757 | |||
1758 | /* First query the current grab state */ |
||
1759 | mode = SDL_WM_GrabInput(SDL_GRAB_QUERY); |
||
1760 | |||
1761 | /* Now explicitly turn off input grab */ |
||
1762 | SDL_WM_GrabInputRaw(SDL_GRAB_OFF); |
||
1763 | |||
1764 | /* Return the old state */ |
||
1765 | return(mode); |
||
1766 | } |
||
1767 | |||
1768 | /* |
||
1769 | * Iconify the window in window managed environments. |
||
1770 | * A successful iconification will result in an SDL_APPACTIVE loss event. |
||
1771 | */ |
||
1772 | int SDL_WM_IconifyWindow(void) |
||
1773 | { |
||
1774 | SDL_VideoDevice *video = current_video; |
||
1775 | SDL_VideoDevice *this = current_video; |
||
1776 | int retval; |
||
1777 | |||
1778 | retval = 0; |
||
1779 | if ( video->IconifyWindow ) { |
||
1780 | retval = video->IconifyWindow(this); |
||
1781 | } |
||
1782 | return(retval); |
||
1783 | } |
||
1784 | |||
1785 | /* |
||
1786 | * Toggle fullscreen mode |
||
1787 | */ |
||
1788 | int SDL_WM_ToggleFullScreen(SDL_Surface *surface) |
||
1789 | { |
||
1790 | SDL_VideoDevice *video = current_video; |
||
1791 | SDL_VideoDevice *this = current_video; |
||
1792 | int toggled; |
||
1793 | |||
1794 | toggled = 0; |
||
1795 | if ( SDL_PublicSurface && (surface == SDL_PublicSurface) && |
||
1796 | video->ToggleFullScreen ) { |
||
1797 | if ( surface->flags & SDL_FULLSCREEN ) { |
||
1798 | toggled = video->ToggleFullScreen(this, 0); |
||
1799 | if ( toggled ) { |
||
1800 | SDL_VideoSurface->flags &= ~SDL_FULLSCREEN; |
||
1801 | SDL_PublicSurface->flags &= ~SDL_FULLSCREEN; |
||
1802 | } |
||
1803 | } else { |
||
1804 | toggled = video->ToggleFullScreen(this, 1); |
||
1805 | if ( toggled ) { |
||
1806 | SDL_VideoSurface->flags |= SDL_FULLSCREEN; |
||
1807 | SDL_PublicSurface->flags |= SDL_FULLSCREEN; |
||
1808 | } |
||
1809 | } |
||
1810 | /* Double-check the grab state inside SDL_WM_GrabInput() */ |
||
1811 | if ( toggled ) { |
||
1812 | SDL_WM_GrabInput(video->input_grab); |
||
1813 | } |
||
1814 | } |
||
1815 | return(toggled); |
||
1816 | } |
||
1817 | |||
1818 | /* |
||
1819 | * Get some platform dependent window manager information |
||
1820 | */ |
||
1821 | int SDL_GetWMInfo (SDL_SysWMinfo *info) |
||
1822 | { |
||
1823 | SDL_VideoDevice *video = current_video; |
||
1824 | SDL_VideoDevice *this = current_video; |
||
1825 | |||
1826 | if ( video && video->GetWMInfo ) { |
||
1827 | return(video->GetWMInfo(this, info)); |
||
1828 | } else { |
||
1829 | return(0); |
||
1830 | } |
||
1831 | }(7-(x%8))) |