Mercurial > sdl-ios-xcode
annotate src/video/SDL_video.c @ 430:60effdbf14ee
Make sure width and height passed to SDL_GetVideoMode() are sane.
| author | Ryan C. Gordon <icculus@icculus.org> |
|---|---|
| date | Thu, 01 Aug 2002 05:16:38 +0000 |
| parents | d1565c52ded5 |
| children | 706de3956894 |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 2 SDL - Simple DirectMedia Layer | |
|
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3 Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002 Sam Lantinga |
| 0 | 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 | |
|
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20 slouken@libsdl.org |
| 0 | 21 */ |
| 22 | |
| 23 #ifdef SAVE_RCSID | |
| 24 static char rcsid = | |
| 25 "@(#) $Id$"; | |
| 26 #endif | |
| 27 | |
| 28 /* The high-level video driver subsystem */ | |
| 29 | |
| 30 #include <stdio.h> | |
| 31 #include <stdlib.h> | |
| 32 #include <string.h> | |
| 33 | |
| 34 #include "SDL.h" | |
| 35 #include "SDL_error.h" | |
| 36 #include "SDL_video.h" | |
| 37 #include "SDL_events.h" | |
| 38 #include "SDL_mutex.h" | |
| 39 #include "SDL_sysvideo.h" | |
| 40 #include "SDL_sysevents.h" | |
| 41 #include "SDL_blit.h" | |
| 42 #include "SDL_pixels_c.h" | |
| 43 #include "SDL_events_c.h" | |
| 44 #include "SDL_cursor_c.h" | |
| 45 | |
| 46 /* Available video drivers */ | |
| 47 static VideoBootStrap *bootstrap[] = { | |
| 48 #ifdef ENABLE_X11 | |
| 49 &X11_bootstrap, | |
| 50 #endif | |
| 51 #ifdef ENABLE_DGA | |
| 52 &DGA_bootstrap, | |
| 53 #endif | |
|
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54 #ifdef ENABLE_NANOX |
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55 &NX_bootstrap, |
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56 #endif |
| 0 | 57 #ifdef ENABLE_FBCON |
| 58 &FBCON_bootstrap, | |
| 59 #endif | |
|
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60 #ifdef ENABLE_DIRECTFB |
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61 &DirectFB_bootstrap, |
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62 #endif |
| 0 | 63 #ifdef ENABLE_PS2GS |
| 64 &PS2GS_bootstrap, | |
| 65 #endif | |
| 66 #ifdef ENABLE_GGI | |
| 67 &GGI_bootstrap, | |
| 68 #endif | |
|
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69 #ifdef ENABLE_VGL |
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70 &VGL_bootstrap, |
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71 #endif |
| 0 | 72 #ifdef ENABLE_SVGALIB |
| 73 &SVGALIB_bootstrap, | |
| 74 #endif | |
| 75 #ifdef ENABLE_AALIB | |
| 76 &AALIB_bootstrap, | |
| 77 #endif | |
| 78 #ifdef ENABLE_DIRECTX | |
| 79 &DIRECTX_bootstrap, | |
| 80 #endif | |
| 81 #ifdef ENABLE_WINDIB | |
| 82 &WINDIB_bootstrap, | |
| 83 #endif | |
| 84 #ifdef ENABLE_BWINDOW | |
| 85 &BWINDOW_bootstrap, | |
| 86 #endif | |
| 87 #ifdef ENABLE_TOOLBOX | |
| 88 &TOOLBOX_bootstrap, | |
| 89 #endif | |
| 90 #ifdef ENABLE_DRAWSPROCKET | |
| 91 &DSp_bootstrap, | |
| 92 #endif | |
|
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93 #ifdef ENABLE_QUARTZ |
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94 &QZ_bootstrap, |
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95 #endif |
| 0 | 96 #ifdef ENABLE_CYBERGRAPHICS |
| 97 &CGX_bootstrap, | |
| 98 #endif | |
|
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99 #ifdef ENABLE_PHOTON |
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100 &ph_bootstrap, |
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101 #endif |
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102 #ifdef ENABLE_EPOC |
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103 &EPOC_bootstrap, |
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104 #endif |
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105 #ifdef ENABLE_DUMMYVIDEO |
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106 &DUMMY_bootstrap, |
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107 #endif |
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108 #ifdef ENABLE_XBIOS |
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109 &XBIOS_bootstrap, |
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110 #endif |
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111 #ifdef ENABLE_GEM |
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112 &GEM_bootstrap, |
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113 #endif |
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114 #ifdef ENABLE_QTOPIA |
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115 &Qtopia_bootstrap, |
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116 #endif |
| 0 | 117 NULL |
| 118 }; | |
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119 |
| 0 | 120 SDL_VideoDevice *current_video = NULL; |
| 121 | |
| 122 /* Various local functions */ | |
| 123 int SDL_VideoInit(const char *driver_name, Uint32 flags); | |
| 124 void SDL_VideoQuit(void); | |
| 125 void SDL_GL_UpdateRectsLock(SDL_VideoDevice* this, int numrects, SDL_Rect* rects); | |
| 126 | |
| 127 static SDL_GrabMode SDL_WM_GrabInputOff(void); | |
| 128 #ifdef HAVE_OPENGL | |
| 129 static int lock_count = 0; | |
| 130 #endif | |
| 131 | |
| 132 | |
| 133 /* | |
| 134 * Initialize the video and event subsystems -- determine native pixel format | |
| 135 */ | |
| 136 int SDL_VideoInit (const char *driver_name, Uint32 flags) | |
| 137 { | |
| 138 SDL_VideoDevice *video; | |
| 139 int index; | |
| 140 int i; | |
| 141 SDL_PixelFormat vformat; | |
| 142 Uint32 video_flags; | |
| 143 | |
| 144 /* Toggle the event thread flags, based on OS requirements */ | |
| 145 #if defined(MUST_THREAD_EVENTS) | |
| 146 flags |= SDL_INIT_EVENTTHREAD; | |
| 147 #elif defined(CANT_THREAD_EVENTS) | |
| 148 if ( (flags & SDL_INIT_EVENTTHREAD) == SDL_INIT_EVENTTHREAD ) { | |
| 149 SDL_SetError("OS doesn't support threaded events"); | |
| 150 return(-1); | |
| 151 } | |
| 152 #endif | |
| 153 | |
| 154 /* Check to make sure we don't overwrite 'current_video' */ | |
| 155 if ( current_video != NULL ) { | |
| 156 SDL_VideoQuit(); | |
| 157 } | |
| 158 | |
| 159 /* Select the proper video driver */ | |
| 160 index = 0; | |
| 161 video = NULL; | |
| 162 if ( driver_name != NULL ) { | |
| 163 #if 0 /* This will be replaced with a better driver selection API */ | |
| 164 if ( strrchr(driver_name, ':') != NULL ) { | |
| 165 index = atoi(strrchr(driver_name, ':')+1); | |
| 166 } | |
| 167 #endif | |
| 168 for ( i=0; bootstrap[i]; ++i ) { | |
| 169 if ( strncmp(bootstrap[i]->name, driver_name, | |
| 170 strlen(bootstrap[i]->name)) == 0 ) { | |
| 171 if ( bootstrap[i]->available() ) { | |
| 172 video = bootstrap[i]->create(index); | |
| 173 break; | |
| 174 } | |
| 175 } | |
| 176 } | |
| 177 } else { | |
| 178 for ( i=0; bootstrap[i]; ++i ) { | |
| 179 if ( bootstrap[i]->available() ) { | |
| 180 video = bootstrap[i]->create(index); | |
| 181 if ( video != NULL ) { | |
| 182 break; | |
| 183 } | |
| 184 } | |
| 185 } | |
| 186 } | |
| 187 if ( video == NULL ) { | |
| 188 SDL_SetError("No available video device"); | |
| 189 return(-1); | |
| 190 } | |
| 191 current_video = video; | |
| 192 current_video->name = bootstrap[i]->name; | |
| 193 | |
| 194 /* Do some basic variable initialization */ | |
| 195 video->screen = NULL; | |
| 196 video->shadow = NULL; | |
| 197 video->visible = NULL; | |
| 198 video->physpal = NULL; | |
| 199 video->gammacols = NULL; | |
| 200 video->gamma = NULL; | |
| 201 video->wm_title = NULL; | |
| 202 video->wm_icon = NULL; | |
| 203 video->offset_x = 0; | |
| 204 video->offset_y = 0; | |
| 205 memset(&video->info, 0, (sizeof video->info)); | |
| 206 | |
| 207 /* Set some very sane GL defaults */ | |
| 208 video->gl_config.driver_loaded = 0; | |
| 209 video->gl_config.dll_handle = NULL; | |
| 210 video->gl_config.red_size = 5; | |
| 211 #if 1 /* This seems to work on more video cards, as a default */ | |
| 212 video->gl_config.green_size = 5; | |
| 213 #else | |
| 214 video->gl_config.green_size = 6; | |
| 215 #endif | |
| 216 video->gl_config.blue_size = 5; | |
| 217 video->gl_config.alpha_size = 0; | |
| 218 video->gl_config.buffer_size = 0; | |
| 219 video->gl_config.depth_size = 16; | |
| 220 video->gl_config.stencil_size = 0; | |
| 221 video->gl_config.double_buffer = 1; | |
| 222 video->gl_config.accum_red_size = 0; | |
| 223 video->gl_config.accum_green_size = 0; | |
| 224 video->gl_config.accum_blue_size = 0; | |
| 225 video->gl_config.accum_alpha_size = 0; | |
| 226 | |
| 227 /* Initialize the video subsystem */ | |
| 228 memset(&vformat, 0, sizeof(vformat)); | |
| 229 if ( video->VideoInit(video, &vformat) < 0 ) { | |
| 230 SDL_VideoQuit(); | |
| 231 return(-1); | |
| 232 } | |
| 233 | |
| 234 /* Create a zero sized video surface of the appropriate format */ | |
| 235 video_flags = SDL_SWSURFACE; | |
| 236 SDL_VideoSurface = SDL_CreateRGBSurface(video_flags, 0, 0, | |
| 237 vformat.BitsPerPixel, | |
| 238 vformat.Rmask, vformat.Gmask, vformat.Bmask, 0); | |
| 239 if ( SDL_VideoSurface == NULL ) { | |
| 240 SDL_VideoQuit(); | |
| 241 return(-1); | |
| 242 } | |
| 243 SDL_PublicSurface = NULL; /* Until SDL_SetVideoMode() */ | |
| 244 | |
| 245 #if 0 /* Don't change the current palette - may be used by other programs. | |
| 246 * The application can't do anything with the display surface until | |
| 247 * a video mode has been set anyway. :) | |
| 248 */ | |
| 249 /* If we have a palettized surface, create a default palette */ | |
| 250 if ( SDL_VideoSurface->format->palette ) { | |
| 251 SDL_PixelFormat *vf = SDL_VideoSurface->format; | |
| 252 SDL_DitherColors(vf->palette->colors, vf->BitsPerPixel); | |
| 253 video->SetColors(video, | |
| 254 0, vf->palette->ncolors, vf->palette->colors); | |
| 255 } | |
| 256 #endif | |
| 257 video->info.vfmt = SDL_VideoSurface->format; | |
| 258 | |
| 259 /* Start the event loop */ | |
| 260 if ( SDL_StartEventLoop(flags) < 0 ) { | |
| 261 SDL_VideoQuit(); | |
| 262 return(-1); | |
| 263 } | |
| 264 SDL_CursorInit(flags & SDL_INIT_EVENTTHREAD); | |
| 265 | |
| 266 /* We're ready to go! */ | |
| 267 return(0); | |
| 268 } | |
| 269 | |
| 270 char *SDL_VideoDriverName(char *namebuf, int maxlen) | |
| 271 { | |
| 272 if ( current_video != NULL ) { | |
| 273 strncpy(namebuf, current_video->name, maxlen-1); | |
| 274 namebuf[maxlen-1] = '\0'; | |
| 275 return(namebuf); | |
| 276 } | |
| 277 return(NULL); | |
| 278 } | |
| 279 | |
| 280 /* | |
| 281 * Get the current display surface | |
| 282 */ | |
| 283 SDL_Surface *SDL_GetVideoSurface(void) | |
| 284 { | |
| 285 SDL_Surface *visible; | |
| 286 | |
| 287 visible = NULL; | |
| 288 if ( current_video ) { | |
| 289 visible = current_video->visible; | |
| 290 } | |
| 291 return(visible); | |
| 292 } | |
| 293 | |
| 294 /* | |
| 295 * Get the current information about the video hardware | |
| 296 */ | |
| 297 const SDL_VideoInfo *SDL_GetVideoInfo(void) | |
| 298 { | |
| 299 const SDL_VideoInfo *info; | |
| 300 | |
| 301 info = NULL; | |
| 302 if ( current_video ) { | |
| 303 info = ¤t_video->info; | |
| 304 } | |
| 305 return(info); | |
| 306 } | |
| 307 | |
| 308 /* | |
| 309 * Return a pointer to an array of available screen dimensions for the | |
| 310 * given format, sorted largest to smallest. Returns NULL if there are | |
| 311 * no dimensions available for a particular format, or (SDL_Rect **)-1 | |
| 312 * if any dimension is okay for the given format. If 'format' is NULL, | |
| 313 * the mode list will be for the format given by SDL_GetVideoInfo()->vfmt | |
| 314 */ | |
| 315 SDL_Rect ** SDL_ListModes (SDL_PixelFormat *format, Uint32 flags) | |
| 316 { | |
| 317 SDL_VideoDevice *video = current_video; | |
| 318 SDL_VideoDevice *this = current_video; | |
| 319 SDL_Rect **modes; | |
| 320 | |
| 321 modes = NULL; | |
| 322 if ( SDL_VideoSurface ) { | |
| 323 if ( format == NULL ) { | |
| 324 format = SDL_VideoSurface->format; | |
| 325 } | |
| 326 modes = video->ListModes(this, format, flags); | |
| 327 } | |
| 328 return(modes); | |
| 329 } | |
| 330 | |
| 331 /* | |
| 332 * Check to see if a particular video mode is supported. | |
| 333 * It returns 0 if the requested mode is not supported under any bit depth, | |
| 334 * or returns the bits-per-pixel of the closest available mode with the | |
| 335 * given width and height. If this bits-per-pixel is different from the | |
| 336 * one used when setting the video mode, SDL_SetVideoMode() will succeed, | |
| 337 * but will emulate the requested bits-per-pixel with a shadow surface. | |
| 338 */ | |
| 339 static Uint8 SDL_closest_depths[4][8] = { | |
| 340 /* 8 bit closest depth ordering */ | |
| 341 { 0, 8, 16, 15, 32, 24, 0, 0 }, | |
| 342 /* 15,16 bit closest depth ordering */ | |
| 343 { 0, 16, 15, 32, 24, 8, 0, 0 }, | |
| 344 /* 24 bit closest depth ordering */ | |
| 345 { 0, 24, 32, 16, 15, 8, 0, 0 }, | |
| 346 /* 32 bit closest depth ordering */ | |
| 347 { 0, 32, 16, 15, 24, 8, 0, 0 } | |
| 348 }; | |
| 349 | |
| 350 int SDL_VideoModeOK (int width, int height, int bpp, Uint32 flags) | |
| 351 { | |
| 352 int table, b, i; | |
| 353 int supported; | |
| 354 SDL_PixelFormat format; | |
| 355 SDL_Rect **sizes; | |
| 356 | |
| 357 /* Currently 1 and 4 bpp are not supported */ | |
| 358 if ( bpp < 8 || bpp > 32 ) { | |
| 359 return(0); | |
| 360 } | |
| 361 if ( (width == 0) || (height == 0) ) { | |
| 362 return(0); | |
| 363 } | |
| 364 | |
| 365 /* Search through the list valid of modes */ | |
| 366 memset(&format, 0, sizeof(format)); | |
| 367 supported = 0; | |
| 368 table = ((bpp+7)/8)-1; | |
| 369 SDL_closest_depths[table][0] = bpp; | |
| 370 SDL_closest_depths[table][7] = 0; | |
| 371 for ( b = 0; !supported && SDL_closest_depths[table][b]; ++b ) { | |
| 372 format.BitsPerPixel = SDL_closest_depths[table][b]; | |
| 373 sizes = SDL_ListModes(&format, flags); | |
| 374 if ( sizes == (SDL_Rect **)0 ) { | |
| 375 /* No sizes supported at this bit-depth */ | |
| 376 continue; | |
| 377 } else | |
| 378 #ifdef macintosh /* MPW optimization bug? */ | |
| 379 if ( (sizes == (SDL_Rect **)0xFFFFFFFF) || | |
| 380 #else | |
| 381 if ( (sizes == (SDL_Rect **)-1) || | |
| 382 #endif | |
| 383 current_video->handles_any_size ) { | |
| 384 /* Any size supported at this bit-depth */ | |
| 385 supported = 1; | |
| 386 continue; | |
| 387 } else | |
| 388 for ( i=0; sizes[i]; ++i ) { | |
| 389 if ((sizes[i]->w == width) && (sizes[i]->h == height)) { | |
| 390 supported = 1; | |
| 391 break; | |
| 392 } | |
| 393 } | |
| 394 } | |
| 395 if ( supported ) { | |
| 396 --b; | |
| 397 return(SDL_closest_depths[table][b]); | |
| 398 } else { | |
| 399 return(0); | |
| 400 } | |
| 401 } | |
| 402 | |
| 403 /* | |
| 404 * Get the closest non-emulated video mode to the one requested | |
| 405 */ | |
| 406 static int SDL_GetVideoMode (int *w, int *h, int *BitsPerPixel, Uint32 flags) | |
| 407 { | |
| 408 int table, b, i; | |
| 409 int supported; | |
| 410 int native_bpp; | |
| 411 SDL_PixelFormat format; | |
| 412 SDL_Rect **sizes; | |
| 413 | |
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414 if ((*w <= 0) || (*h <= 0)) { |
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415 SDL_SetError("Invalid parameter"); |
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416 return(0); |
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417 } |
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418 |
| 0 | 419 /* Try the original video mode, get the closest depth */ |
| 420 native_bpp = SDL_VideoModeOK(*w, *h, *BitsPerPixel, flags); | |
| 421 if ( native_bpp == *BitsPerPixel ) { | |
| 422 return(1); | |
| 423 } | |
| 424 if ( native_bpp > 0 ) { | |
| 425 *BitsPerPixel = native_bpp; | |
| 426 return(1); | |
| 427 } | |
| 428 | |
| 429 /* No exact size match at any depth, look for closest match */ | |
| 430 memset(&format, 0, sizeof(format)); | |
| 431 supported = 0; | |
| 432 table = ((*BitsPerPixel+7)/8)-1; | |
| 433 SDL_closest_depths[table][0] = *BitsPerPixel; | |
| 434 SDL_closest_depths[table][7] = SDL_VideoSurface->format->BitsPerPixel; | |
| 435 for ( b = 0; !supported && SDL_closest_depths[table][b]; ++b ) { | |
| 436 format.BitsPerPixel = SDL_closest_depths[table][b]; | |
| 437 sizes = SDL_ListModes(&format, flags); | |
| 438 if ( sizes == (SDL_Rect **)0 ) { | |
| 439 /* No sizes supported at this bit-depth */ | |
| 440 continue; | |
| 441 } | |
| 442 for ( i=0; sizes[i]; ++i ) { | |
| 443 if ((sizes[i]->w < *w) || (sizes[i]->h < *h)) { | |
| 444 if ( i > 0 ) { | |
| 445 --i; | |
| 446 *w = sizes[i]->w; | |
| 447 *h = sizes[i]->h; | |
| 448 *BitsPerPixel = SDL_closest_depths[table][b]; | |
| 449 supported = 1; | |
| 450 } else { | |
| 451 /* Largest mode too small... */; | |
| 452 } | |
| 453 break; | |
| 454 } | |
| 455 } | |
| 456 if ( (i > 0) && ! sizes[i] ) { | |
| 457 /* The smallest mode was larger than requested, OK */ | |
| 458 --i; | |
| 459 *w = sizes[i]->w; | |
| 460 *h = sizes[i]->h; | |
| 461 *BitsPerPixel = SDL_closest_depths[table][b]; | |
| 462 supported = 1; | |
| 463 } | |
| 464 } | |
| 465 if ( ! supported ) { | |
| 466 SDL_SetError("No video mode large enough for %dx%d", *w, *h); | |
| 467 } | |
| 468 return(supported); | |
| 469 } | |
| 470 | |
| 471 /* This should probably go somewhere else -- like SDL_surface.c */ | |
| 472 static void SDL_ClearSurface(SDL_Surface *surface) | |
| 473 { | |
| 474 Uint32 black; | |
| 475 | |
| 476 black = SDL_MapRGB(surface->format, 0, 0, 0); | |
| 477 SDL_FillRect(surface, NULL, black); | |
| 478 if ((surface->flags&SDL_HWSURFACE) && (surface->flags&SDL_DOUBLEBUF)) { | |
| 479 SDL_Flip(surface); | |
| 480 SDL_FillRect(surface, NULL, black); | |
| 481 } | |
| 482 SDL_Flip(surface); | |
| 483 } | |
| 484 | |
| 485 /* | |
| 486 * Create a shadow surface suitable for fooling the app. :-) | |
| 487 */ | |
| 488 static void SDL_CreateShadowSurface(int depth) | |
| 489 { | |
| 490 Uint32 Rmask, Gmask, Bmask; | |
| 491 | |
| 492 /* Allocate the shadow surface */ | |
| 493 if ( depth == (SDL_VideoSurface->format)->BitsPerPixel ) { | |
| 494 Rmask = (SDL_VideoSurface->format)->Rmask; | |
| 495 Gmask = (SDL_VideoSurface->format)->Gmask; | |
| 496 Bmask = (SDL_VideoSurface->format)->Bmask; | |
| 497 } else { | |
| 498 Rmask = Gmask = Bmask = 0; | |
| 499 } | |
| 500 SDL_ShadowSurface = SDL_CreateRGBSurface(SDL_SWSURFACE, | |
| 501 SDL_VideoSurface->w, SDL_VideoSurface->h, | |
| 502 depth, Rmask, Gmask, Bmask, 0); | |
| 503 if ( SDL_ShadowSurface == NULL ) { | |
| 504 return; | |
| 505 } | |
| 506 | |
| 507 /* 8-bit shadow surfaces report that they have exclusive palette */ | |
| 508 if ( SDL_ShadowSurface->format->palette ) { | |
| 509 SDL_ShadowSurface->flags |= SDL_HWPALETTE; | |
| 510 if ( depth == (SDL_VideoSurface->format)->BitsPerPixel ) { | |
| 511 memcpy(SDL_ShadowSurface->format->palette->colors, | |
| 512 SDL_VideoSurface->format->palette->colors, | |
| 513 SDL_VideoSurface->format->palette->ncolors* | |
| 514 sizeof(SDL_Color)); | |
| 515 } else { | |
| 516 SDL_DitherColors( | |
| 517 SDL_ShadowSurface->format->palette->colors, depth); | |
| 518 } | |
| 519 } | |
| 520 | |
| 521 /* If the video surface is resizable, the shadow should say so */ | |
| 522 if ( (SDL_VideoSurface->flags & SDL_RESIZABLE) == SDL_RESIZABLE ) { | |
| 523 SDL_ShadowSurface->flags |= SDL_RESIZABLE; | |
| 524 } | |
| 525 /* If the video surface has no frame, the shadow should say so */ | |
| 526 if ( (SDL_VideoSurface->flags & SDL_NOFRAME) == SDL_NOFRAME ) { | |
| 527 SDL_ShadowSurface->flags |= SDL_NOFRAME; | |
| 528 } | |
| 529 /* If the video surface is fullscreen, the shadow should say so */ | |
| 530 if ( (SDL_VideoSurface->flags & SDL_FULLSCREEN) == SDL_FULLSCREEN ) { | |
| 531 SDL_ShadowSurface->flags |= SDL_FULLSCREEN; | |
| 532 } | |
| 533 /* If the video surface is flippable, the shadow should say so */ | |
| 534 if ( (SDL_VideoSurface->flags & SDL_DOUBLEBUF) == SDL_DOUBLEBUF ) { | |
| 535 SDL_ShadowSurface->flags |= SDL_DOUBLEBUF; | |
| 536 } | |
| 537 return; | |
| 538 } | |
| 539 | |
| 540 /* | |
| 541 * Set the requested video mode, allocating a shadow buffer if necessary. | |
| 542 */ | |
| 543 SDL_Surface * SDL_SetVideoMode (int width, int height, int bpp, Uint32 flags) | |
| 544 { | |
| 545 SDL_VideoDevice *video, *this; | |
| 546 SDL_Surface *prev_mode, *mode; | |
| 547 int video_w; | |
| 548 int video_h; | |
| 549 int video_bpp; | |
| 550 int is_opengl; | |
| 551 SDL_GrabMode saved_grab; | |
| 552 | |
| 553 /* Start up the video driver, if necessary.. | |
| 554 WARNING: This is the only function protected this way! | |
| 555 */ | |
| 556 if ( ! current_video ) { | |
| 557 if ( SDL_Init(SDL_INIT_VIDEO|SDL_INIT_NOPARACHUTE) < 0 ) { | |
| 558 return(NULL); | |
| 559 } | |
| 560 } | |
| 561 this = video = current_video; | |
| 562 | |
| 563 /* Default to the current video bpp */ | |
| 564 if ( bpp == 0 ) { | |
| 565 flags |= SDL_ANYFORMAT; | |
| 566 bpp = SDL_VideoSurface->format->BitsPerPixel; | |
| 567 } | |
| 568 | |
| 569 /* Get a good video mode, the closest one possible */ | |
| 570 video_w = width; | |
| 571 video_h = height; | |
| 572 video_bpp = bpp; | |
| 573 if ( ! SDL_GetVideoMode(&video_w, &video_h, &video_bpp, flags) ) { | |
| 574 return(NULL); | |
| 575 } | |
| 576 | |
| 577 /* Check the requested flags */ | |
| 578 /* There's no palette in > 8 bits-per-pixel mode */ | |
| 579 if ( video_bpp > 8 ) { | |
| 580 flags &= ~SDL_HWPALETTE; | |
| 581 } | |
| 582 #if 0 | |
| 583 if ( (flags&SDL_FULLSCREEN) != SDL_FULLSCREEN ) { | |
| 584 /* There's no windowed double-buffering */ | |
| 585 flags &= ~SDL_DOUBLEBUF; | |
| 586 } | |
| 587 #endif | |
| 588 if ( (flags&SDL_DOUBLEBUF) == SDL_DOUBLEBUF ) { | |
| 589 /* Use hardware surfaces when double-buffering */ | |
| 590 flags |= SDL_HWSURFACE; | |
| 591 } | |
| 592 | |
| 593 is_opengl = ( ( flags & SDL_OPENGL ) == SDL_OPENGL ); | |
| 594 if ( is_opengl ) { | |
| 595 /* These flags are for 2D video modes only */ | |
| 596 flags &= ~(SDL_HWSURFACE|SDL_DOUBLEBUF); | |
| 597 } | |
| 598 | |
|
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599 /* Reset the keyboard here so event callbacks can run */ |
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600 SDL_ResetKeyboard(); |
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601 |
| 0 | 602 /* Clean up any previous video mode */ |
| 603 if ( SDL_PublicSurface != NULL ) { | |
| 604 SDL_PublicSurface = NULL; | |
| 605 } | |
| 606 if ( SDL_ShadowSurface != NULL ) { | |
| 607 SDL_Surface *ready_to_go; | |
| 608 ready_to_go = SDL_ShadowSurface; | |
| 609 SDL_ShadowSurface = NULL; | |
| 610 SDL_FreeSurface(ready_to_go); | |
| 611 } | |
| 612 if ( video->physpal ) { | |
| 613 free(video->physpal->colors); | |
| 614 free(video->physpal); | |
| 615 video->physpal = NULL; | |
| 616 } | |
| 617 if( video->gammacols) { | |
| 618 free(video->gammacols); | |
| 619 video->gammacols = NULL; | |
| 620 } | |
| 621 | |
| 622 /* Save the previous grab state and turn off grab for mode switch */ | |
| 623 saved_grab = SDL_WM_GrabInputOff(); | |
| 624 | |
| 625 /* Try to set the video mode, along with offset and clipping */ | |
| 626 prev_mode = SDL_VideoSurface; | |
| 627 SDL_LockCursor(); | |
| 628 SDL_VideoSurface = NULL; /* In case it's freed by driver */ | |
| 629 mode = video->SetVideoMode(this, prev_mode,video_w,video_h,video_bpp,flags); | |
| 630 if ( mode ) { /* Prevent resize events from mode change */ | |
| 631 SDL_PrivateResize(mode->w, mode->h); | |
|
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632 |
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633 /* Sam - If we asked for OpenGL mode, and didn't get it, fail */ |
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634 if ( is_opengl && !(mode->flags & SDL_OPENGL) ) { |
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635 mode = NULL; |
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636 } |
| 0 | 637 } |
| 638 /* | |
| 639 * rcg11292000 | |
| 640 * If you try to set an SDL_OPENGL surface, and fail to find a | |
| 641 * matching visual, then the next call to SDL_SetVideoMode() | |
| 642 * will segfault, since we no longer point to a dummy surface, | |
| 643 * but rather NULL. | |
| 644 * Sam 11/29/00 | |
| 645 * WARNING, we need to make sure that the previous mode hasn't | |
| 646 * already been freed by the video driver. What do we do in | |
| 647 * that case? Should we call SDL_VideoInit() again? | |
| 648 */ | |
| 649 SDL_VideoSurface = (mode != NULL) ? mode : prev_mode; | |
| 650 | |
| 651 if ( (mode != NULL) && (!is_opengl) ) { | |
| 652 /* Sanity check */ | |
| 653 if ( (mode->w < width) || (mode->h < height) ) { | |
| 654 SDL_SetError("Video mode smaller than requested"); | |
| 655 return(NULL); | |
| 656 } | |
| 657 | |
| 658 /* If we have a palettized surface, create a default palette */ | |
| 659 if ( mode->format->palette ) { | |
| 660 SDL_PixelFormat *vf = mode->format; | |
| 661 SDL_DitherColors(vf->palette->colors, vf->BitsPerPixel); | |
| 662 video->SetColors(this, 0, vf->palette->ncolors, | |
| 663 vf->palette->colors); | |
| 664 } | |
| 665 | |
| 666 /* Clear the surface to black */ | |
| 667 video->offset_x = 0; | |
| 668 video->offset_y = 0; | |
| 669 mode->offset = 0; | |
| 670 SDL_SetClipRect(mode, NULL); | |
| 671 SDL_ClearSurface(mode); | |
| 672 | |
| 673 /* Now adjust the offsets to match the desired mode */ | |
| 674 video->offset_x = (mode->w-width)/2; | |
| 675 video->offset_y = (mode->h-height)/2; | |
| 676 mode->offset = video->offset_y*mode->pitch + | |
| 677 video->offset_x*mode->format->BytesPerPixel; | |
| 678 #ifdef DEBUG_VIDEO | |
| 679 fprintf(stderr, | |
| 680 "Requested mode: %dx%dx%d, obtained mode %dx%dx%d (offset %d)\n", | |
| 681 width, height, bpp, | |
| 682 mode->w, mode->h, mode->format->BitsPerPixel, mode->offset); | |
| 683 #endif | |
| 684 mode->w = width; | |
| 685 mode->h = height; | |
| 686 SDL_SetClipRect(mode, NULL); | |
| 687 } | |
| 688 SDL_ResetCursor(); | |
| 689 SDL_UnlockCursor(); | |
| 690 | |
| 691 /* If we failed setting a video mode, return NULL... (Uh Oh!) */ | |
| 692 if ( mode == NULL ) { | |
| 693 return(NULL); | |
| 694 } | |
| 695 | |
| 696 /* If there is no window manager, set the SDL_NOFRAME flag */ | |
| 697 if ( ! video->info.wm_available ) { | |
| 698 mode->flags |= SDL_NOFRAME; | |
| 699 } | |
| 700 | |
| 701 /* Reset the mouse cursor and grab for new video mode */ | |
| 702 SDL_SetCursor(NULL); | |
| 703 if ( video->UpdateMouse ) { | |
| 704 video->UpdateMouse(this); | |
| 705 } | |
| 706 SDL_WM_GrabInput(saved_grab); | |
| 707 SDL_GetRelativeMouseState(NULL, NULL); /* Clear first large delta */ | |
| 708 | |
| 709 /* If we're running OpenGL, make the context current */ | |
| 710 if ( (video->screen->flags & SDL_OPENGL) && | |
| 711 video->GL_MakeCurrent ) { | |
| 712 if ( video->GL_MakeCurrent(this) < 0 ) { | |
| 713 return(NULL); | |
| 714 } | |
| 715 } | |
| 716 | |
| 717 /* Set up a fake SDL surface for OpenGL "blitting" */ | |
| 718 if ( (flags & SDL_OPENGLBLIT) == SDL_OPENGLBLIT ) { | |
| 719 /* Load GL functions for performing the texture updates */ | |
| 720 #ifdef HAVE_OPENGL | |
| 721 #define SDL_PROC(ret,func,params) \ | |
| 722 do { \ | |
| 723 video->func = SDL_GL_GetProcAddress(#func); \ | |
| 724 if ( ! video->func ) { \ | |
| 725 SDL_SetError("Couldn't load GL function: %s\n", #func); \ | |
| 726 return(NULL); \ | |
| 727 } \ | |
| 728 } while ( 0 ); | |
| 729 #include "SDL_glfuncs.h" | |
| 730 #undef SDL_PROC | |
| 731 | |
| 732 /* Create a software surface for blitting */ | |
| 733 #ifdef GL_VERSION_1_2 | |
| 734 /* If the implementation either supports the packed pixels | |
| 735 extension, or implements the core OpenGL 1.2 API, it will | |
| 736 support the GL_UNSIGNED_SHORT_5_6_5 texture format. | |
| 737 */ | |
| 738 if ( (bpp == 16) && | |
|
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739 (strstr((const char *)video->glGetString(GL_EXTENSIONS), "GL_EXT_packed_pixels") || |
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740 (atof((const char *)video->glGetString(GL_VERSION)) >= 1.2f)) |
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741 ) { |
| 0 | 742 video->is_32bit = 0; |
| 743 SDL_VideoSurface = SDL_CreateRGBSurface( | |
| 744 flags, | |
| 745 width, | |
| 746 height, | |
| 747 16, | |
| 748 31 << 11, | |
| 749 63 << 5, | |
| 750 31, | |
| 751 0 | |
| 752 ); | |
| 753 } | |
| 754 else | |
| 755 #endif /* OpenGL 1.2 */ | |
| 756 { | |
| 757 video->is_32bit = 1; | |
| 758 SDL_VideoSurface = SDL_CreateRGBSurface( | |
| 759 flags, | |
| 760 width, | |
| 761 height, | |
| 762 32, | |
| 763 #if SDL_BYTEORDER == SDL_LIL_ENDIAN | |
| 764 0x000000FF, | |
| 765 0x0000FF00, | |
| 766 0x00FF0000, | |
| 767 0xFF000000 | |
| 768 #else | |
| 769 0xFF000000, | |
| 770 0x00FF0000, | |
| 771 0x0000FF00, | |
| 772 0x000000FF | |
| 773 #endif | |
| 774 ); | |
| 775 } | |
| 776 if ( ! SDL_VideoSurface ) { | |
| 777 return(NULL); | |
| 778 } | |
| 779 SDL_VideoSurface->flags = mode->flags | SDL_OPENGLBLIT; | |
| 780 | |
| 781 /* Free the original video mode surface (is this safe?) */ | |
| 782 SDL_FreeSurface(mode); | |
| 783 | |
| 784 /* Set the surface completely opaque & white by default */ | |
| 785 memset( SDL_VideoSurface->pixels, 255, SDL_VideoSurface->h * SDL_VideoSurface->pitch ); | |
| 786 video->glGenTextures( 1, &video->texture ); | |
| 787 video->glBindTexture( GL_TEXTURE_2D, video->texture ); | |
| 788 video->glTexImage2D( | |
| 789 GL_TEXTURE_2D, | |
| 790 0, | |
| 791 video->is_32bit ? GL_RGBA : GL_RGB, | |
| 792 256, | |
| 793 256, | |
| 794 0, | |
| 795 video->is_32bit ? GL_RGBA : GL_RGB, | |
| 796 #ifdef GL_VERSION_1_2 | |
| 797 video->is_32bit ? GL_UNSIGNED_BYTE : GL_UNSIGNED_SHORT_5_6_5, | |
| 798 #else | |
| 799 GL_UNSIGNED_BYTE, | |
| 800 #endif | |
| 801 NULL); | |
| 802 | |
| 803 video->UpdateRects = SDL_GL_UpdateRectsLock; | |
| 804 #else | |
| 805 SDL_SetError("Somebody forgot to #define HAVE_OPENGL"); | |
| 806 return(NULL); | |
| 807 #endif | |
| 808 } | |
| 809 | |
| 810 /* Create a shadow surface if necessary */ | |
| 811 /* There are three conditions under which we create a shadow surface: | |
| 812 1. We need a particular bits-per-pixel that we didn't get. | |
| 813 2. We need a hardware palette and didn't get one. | |
| 814 3. We need a software surface and got a hardware surface. | |
| 815 */ | |
| 816 if ( !(SDL_VideoSurface->flags & SDL_OPENGL) && | |
| 817 ( | |
| 818 ( !(flags&SDL_ANYFORMAT) && | |
| 819 (SDL_VideoSurface->format->BitsPerPixel != bpp)) || | |
| 820 ( (flags&SDL_HWPALETTE) && | |
| 821 !(SDL_VideoSurface->flags&SDL_HWPALETTE)) || | |
| 822 /* If the surface is in hardware, video writes are visible | |
| 823 as soon as they are performed, so we need to buffer them | |
| 824 */ | |
| 825 ( ((flags&SDL_HWSURFACE) == SDL_SWSURFACE) && | |
| 826 (SDL_VideoSurface->flags&SDL_HWSURFACE)) | |
| 827 ) ) { | |
| 828 SDL_CreateShadowSurface(bpp); | |
| 829 if ( SDL_ShadowSurface == NULL ) { | |
| 830 SDL_SetError("Couldn't create shadow surface"); | |
| 831 return(NULL); | |
| 832 } | |
| 833 SDL_PublicSurface = SDL_ShadowSurface; | |
| 834 } else { | |
| 835 SDL_PublicSurface = SDL_VideoSurface; | |
| 836 } | |
| 837 video->info.vfmt = SDL_VideoSurface->format; | |
| 838 | |
| 839 /* We're done! */ | |
| 840 return(SDL_PublicSurface); | |
| 841 } | |
| 842 | |
| 843 /* | |
| 844 * Convert a surface into the video pixel format. | |
| 845 */ | |
| 846 SDL_Surface * SDL_DisplayFormat (SDL_Surface *surface) | |
| 847 { | |
| 848 Uint32 flags; | |
| 849 | |
| 850 if ( ! SDL_PublicSurface ) { | |
| 851 SDL_SetError("No video mode has been set"); | |
| 852 return(NULL); | |
| 853 } | |
| 854 /* Set the flags appropriate for copying to display surface */ | |
|
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855 if (((SDL_PublicSurface->flags&SDL_HWSURFACE) == SDL_HWSURFACE) && current_video->info.blit_hw) |
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856 flags = SDL_HWSURFACE; |
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857 else |
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858 flags = SDL_SWSURFACE; |
| 0 | 859 #ifdef AUTORLE_DISPLAYFORMAT |
| 860 flags |= (surface->flags & (SDL_SRCCOLORKEY|SDL_SRCALPHA)); | |
| 861 flags |= SDL_RLEACCELOK; | |
| 862 #else | |
| 863 flags |= surface->flags & (SDL_SRCCOLORKEY|SDL_SRCALPHA|SDL_RLEACCELOK); | |
| 864 #endif | |
| 865 return(SDL_ConvertSurface(surface, SDL_PublicSurface->format, flags)); | |
| 866 } | |
| 867 | |
| 868 /* | |
| 869 * Convert a surface into a format that's suitable for blitting to | |
| 870 * the screen, but including an alpha channel. | |
| 871 */ | |
| 872 SDL_Surface *SDL_DisplayFormatAlpha(SDL_Surface *surface) | |
| 873 { | |
| 874 SDL_PixelFormat *vf; | |
| 875 SDL_PixelFormat *format; | |
| 876 SDL_Surface *converted; | |
| 877 Uint32 flags; | |
| 878 /* default to ARGB8888 */ | |
| 879 Uint32 amask = 0xff000000; | |
| 880 Uint32 rmask = 0x00ff0000; | |
| 881 Uint32 gmask = 0x0000ff00; | |
| 882 Uint32 bmask = 0x000000ff; | |
| 883 | |
| 884 if ( ! SDL_PublicSurface ) { | |
| 885 SDL_SetError("No video mode has been set"); | |
| 886 return(NULL); | |
| 887 } | |
| 888 vf = SDL_PublicSurface->format; | |
| 889 | |
| 890 switch(vf->BytesPerPixel) { | |
| 891 case 2: | |
| 892 /* For XGY5[56]5, use, AXGY8888, where {X, Y} = {R, B}. | |
| 893 For anything else (like ARGB4444) it doesn't matter | |
| 894 since we have no special code for it anyway */ | |
| 895 if ( (vf->Rmask == 0x1f) && | |
| 896 (vf->Bmask == 0xf800 || vf->Bmask == 0x7c00)) { | |
| 897 rmask = 0xff; | |
| 898 bmask = 0xff0000; | |
| 899 } | |
| 900 break; | |
| 901 | |
| 902 case 3: | |
| 903 case 4: | |
| 904 /* Keep the video format, as long as the high 8 bits are | |
| 905 unused or alpha */ | |
| 906 if ( (vf->Rmask == 0xff) && (vf->Bmask == 0xff0000) ) { | |
| 907 rmask = 0xff; | |
| 908 bmask = 0xff0000; | |
| 909 } | |
| 910 break; | |
| 911 | |
| 912 default: | |
| 913 /* We have no other optimised formats right now. When/if a new | |
| 914 optimised alpha format is written, add the converter here */ | |
| 915 break; | |
| 916 } | |
| 917 format = SDL_AllocFormat(32, rmask, gmask, bmask, amask); | |
| 918 flags = SDL_PublicSurface->flags & SDL_HWSURFACE; | |
| 919 flags |= surface->flags & (SDL_SRCALPHA | SDL_RLEACCELOK); | |
| 920 converted = SDL_ConvertSurface(surface, format, flags); | |
| 921 SDL_FreeFormat(format); | |
| 922 return(converted); | |
| 923 } | |
| 924 | |
| 925 /* | |
| 926 * Update a specific portion of the physical screen | |
| 927 */ | |
| 928 void SDL_UpdateRect(SDL_Surface *screen, Sint32 x, Sint32 y, Uint32 w, Uint32 h) | |
| 929 { | |
| 930 if ( screen ) { | |
| 931 SDL_Rect rect; | |
| 932 | |
| 933 /* Perform some checking */ | |
| 934 if ( w == 0 ) | |
| 935 w = screen->w; | |
| 936 if ( h == 0 ) | |
| 937 h = screen->h; | |
| 938 if ( (int)(x+w) > screen->w ) | |
| 939 return; | |
| 940 if ( (int)(y+h) > screen->h ) | |
| 941 return; | |
| 942 | |
| 943 /* Fill the rectangle */ | |
| 944 rect.x = x; | |
| 945 rect.y = y; | |
| 946 rect.w = w; | |
| 947 rect.h = h; | |
| 948 SDL_UpdateRects(screen, 1, &rect); | |
| 949 } | |
| 950 } | |
| 951 void SDL_UpdateRects (SDL_Surface *screen, int numrects, SDL_Rect *rects) | |
| 952 { | |
| 953 int i; | |
| 954 SDL_VideoDevice *video = current_video; | |
| 955 SDL_VideoDevice *this = current_video; | |
| 956 | |
| 957 if ( screen == SDL_ShadowSurface ) { | |
| 958 /* Blit the shadow surface using saved mapping */ | |
| 959 SDL_Palette *pal = screen->format->palette; | |
| 960 SDL_Color *saved_colors = NULL; | |
| 961 if ( pal && !(SDL_VideoSurface->flags & SDL_HWPALETTE) ) { | |
| 962 /* simulated 8bpp, use correct physical palette */ | |
| 963 saved_colors = pal->colors; | |
| 964 if ( video->gammacols ) { | |
| 965 /* gamma-corrected palette */ | |
| 966 pal->colors = video->gammacols; | |
| 967 } else if ( video->physpal ) { | |
| 968 /* physical palette different from logical */ | |
| 969 pal->colors = video->physpal->colors; | |
| 970 } | |
| 971 } | |
| 972 if ( SHOULD_DRAWCURSOR(SDL_cursorstate) ) { | |
| 973 SDL_LockCursor(); | |
| 974 SDL_DrawCursor(SDL_ShadowSurface); | |
| 975 for ( i=0; i<numrects; ++i ) { | |
| 976 SDL_LowerBlit(SDL_ShadowSurface, &rects[i], | |
| 977 SDL_VideoSurface, &rects[i]); | |
| 978 } | |
| 979 SDL_EraseCursor(SDL_ShadowSurface); | |
| 980 SDL_UnlockCursor(); | |
| 981 } else { | |
| 982 for ( i=0; i<numrects; ++i ) { | |
| 983 SDL_LowerBlit(SDL_ShadowSurface, &rects[i], | |
| 984 SDL_VideoSurface, &rects[i]); | |
| 985 } | |
| 986 } | |
| 987 if ( saved_colors ) | |
| 988 pal->colors = saved_colors; | |
| 989 | |
| 990 /* Fall through to video surface update */ | |
| 991 screen = SDL_VideoSurface; | |
| 992 } | |
| 993 if ( screen == SDL_VideoSurface ) { | |
| 994 /* Update the video surface */ | |
| 995 if ( screen->offset ) { | |
| 996 for ( i=0; i<numrects; ++i ) { | |
| 997 rects[i].x += video->offset_x; | |
| 998 rects[i].y += video->offset_y; | |
| 999 } | |
| 1000 video->UpdateRects(this, numrects, rects); | |
| 1001 for ( i=0; i<numrects; ++i ) { | |
| 1002 rects[i].x -= video->offset_x; | |
| 1003 rects[i].y -= video->offset_y; | |
| 1004 } | |
| 1005 } else { | |
| 1006 video->UpdateRects(this, numrects, rects); | |
| 1007 } | |
| 1008 } | |
| 1009 } | |
| 1010 | |
| 1011 /* | |
| 1012 * Performs hardware double buffering, if possible, or a full update if not. | |
| 1013 */ | |
| 1014 int SDL_Flip(SDL_Surface *screen) | |
| 1015 { | |
| 1016 SDL_VideoDevice *video = current_video; | |
| 1017 /* Copy the shadow surface to the video surface */ | |
| 1018 if ( screen == SDL_ShadowSurface ) { | |
| 1019 SDL_Rect rect; | |
| 1020 SDL_Palette *pal = screen->format->palette; | |
| 1021 SDL_Color *saved_colors = NULL; | |
| 1022 if ( pal && !(SDL_VideoSurface->flags & SDL_HWPALETTE) ) { | |
| 1023 /* simulated 8bpp, use correct physical palette */ | |
| 1024 saved_colors = pal->colors; | |
| 1025 if ( video->gammacols ) { | |
| 1026 /* gamma-corrected palette */ | |
| 1027 pal->colors = video->gammacols; | |
| 1028 } else if ( video->physpal ) { | |
| 1029 /* physical palette different from logical */ | |
| 1030 pal->colors = video->physpal->colors; | |
| 1031 } | |
| 1032 } | |
| 1033 | |
| 1034 rect.x = 0; | |
| 1035 rect.y = 0; | |
| 1036 rect.w = screen->w; | |
| 1037 rect.h = screen->h; | |
| 1038 SDL_LowerBlit(SDL_ShadowSurface,&rect, SDL_VideoSurface,&rect); | |
| 1039 | |
| 1040 if ( saved_colors ) | |
| 1041 pal->colors = saved_colors; | |
| 1042 screen = SDL_VideoSurface; | |
| 1043 } | |
| 1044 if ( (screen->flags & SDL_DOUBLEBUF) == SDL_DOUBLEBUF ) { | |
| 1045 SDL_VideoDevice *this = current_video; | |
| 1046 return(video->FlipHWSurface(this, SDL_VideoSurface)); | |
| 1047 } else { | |
| 1048 SDL_UpdateRect(screen, 0, 0, 0, 0); | |
| 1049 } | |
| 1050 return(0); | |
| 1051 } | |
| 1052 | |
| 1053 static void SetPalette_logical(SDL_Surface *screen, SDL_Color *colors, | |
| 1054 int firstcolor, int ncolors) | |
| 1055 { | |
| 1056 SDL_Palette *pal = screen->format->palette; | |
| 1057 SDL_Palette *vidpal; | |
| 1058 | |
| 1059 if ( colors != (pal->colors + firstcolor) ) { | |
| 1060 memcpy(pal->colors + firstcolor, colors, | |
| 1061 ncolors * sizeof(*colors)); | |
| 1062 } | |
| 1063 | |
| 1064 vidpal = SDL_VideoSurface->format->palette; | |
| 1065 if ( (screen == SDL_ShadowSurface) && vidpal ) { | |
| 1066 /* | |
| 1067 * This is a shadow surface, and the physical | |
| 1068 * framebuffer is also indexed. Propagate the | |
| 1069 * changes to its logical palette so that | |
| 1070 * updates are always identity blits | |
| 1071 */ | |
| 1072 memcpy(vidpal->colors + firstcolor, colors, | |
| 1073 ncolors * sizeof(*colors)); | |
| 1074 } | |
| 1075 SDL_FormatChanged(screen); | |
| 1076 } | |
| 1077 | |
| 1078 static int SetPalette_physical(SDL_Surface *screen, | |
| 1079 SDL_Color *colors, int firstcolor, int ncolors) | |
| 1080 { | |
| 1081 SDL_VideoDevice *video = current_video; | |
| 1082 int gotall = 1; | |
| 1083 | |
| 1084 if ( video->physpal ) { | |
| 1085 /* We need to copy the new colors, since we haven't | |
| 1086 * already done the copy in the logical set above. | |
| 1087 */ | |
| 1088 memcpy(video->physpal->colors + firstcolor, | |
| 1089 colors, ncolors * sizeof(*colors)); | |
| 1090 } | |
| 1091 if ( screen == SDL_ShadowSurface ) { | |
| 1092 if ( SDL_VideoSurface->flags & SDL_HWPALETTE ) { | |
| 1093 /* | |
| 1094 * The real screen is also indexed - set its physical | |
| 1095 * palette. The physical palette does not include the | |
| 1096 * gamma modification, we apply it directly instead, | |
| 1097 * but this only happens if we have hardware palette. | |
| 1098 */ | |
| 1099 screen = SDL_VideoSurface; | |
| 1100 } else { | |
| 1101 /* | |
| 1102 * The video surface is not indexed - invalidate any | |
| 1103 * active shadow-to-video blit mappings. | |
| 1104 */ | |
| 1105 if ( screen->map->dst == SDL_VideoSurface ) { | |
| 1106 SDL_InvalidateMap(screen->map); | |
| 1107 } | |
| 1108 if ( video->gamma ) { | |
| 1109 if( ! video->gammacols ) { | |
| 1110 SDL_Palette *pp = video->physpal; | |
| 1111 if(!pp) | |
| 1112 pp = screen->format->palette; | |
| 1113 video->gammacols = malloc(pp->ncolors | |
| 1114 * sizeof(SDL_Color)); | |
| 1115 SDL_ApplyGamma(video->gamma, | |
| 1116 pp->colors, | |
| 1117 video->gammacols, | |
| 1118 pp->ncolors); | |
| 1119 } else { | |
| 1120 SDL_ApplyGamma(video->gamma, colors, | |
| 1121 video->gammacols | |
| 1122 + firstcolor, | |
| 1123 ncolors); | |
| 1124 } | |
| 1125 } | |
| 1126 SDL_UpdateRect(screen, 0, 0, 0, 0); | |
| 1127 } | |
| 1128 } | |
| 1129 | |
| 1130 if ( screen == SDL_VideoSurface ) { | |
| 1131 SDL_Color gcolors[256]; | |
| 1132 | |
| 1133 if ( video->gamma ) { | |
| 1134 SDL_ApplyGamma(video->gamma, colors, gcolors, ncolors); | |
| 1135 colors = gcolors; | |
| 1136 } | |
| 1137 gotall = video->SetColors(video, firstcolor, ncolors, colors); | |
| 1138 if ( ! gotall ) { | |
| 1139 /* The video flags shouldn't have SDL_HWPALETTE, and | |
| 1140 the video driver is responsible for copying back the | |
| 1141 correct colors into the video surface palette. | |
| 1142 */ | |
| 1143 ; | |
| 1144 } | |
| 1145 SDL_CursorPaletteChanged(); | |
| 1146 } | |
| 1147 return gotall; | |
| 1148 } | |
| 1149 | |
| 1150 /* | |
| 1151 * Set the physical and/or logical colormap of a surface: | |
| 1152 * Only the screen has a physical colormap. It determines what is actually | |
| 1153 * sent to the display. | |
| 1154 * The logical colormap is used to map blits to/from the surface. | |
| 1155 * 'which' is one or both of SDL_LOGPAL, SDL_PHYSPAL | |
| 1156 * | |
| 1157 * Return nonzero if all colours were set as requested, or 0 otherwise. | |
| 1158 */ | |
| 1159 int SDL_SetPalette(SDL_Surface *screen, int which, | |
| 1160 SDL_Color *colors, int firstcolor, int ncolors) | |
| 1161 { | |
| 1162 SDL_Palette *pal; | |
| 1163 int gotall; | |
| 1164 int palsize; | |
| 1165 | |
| 34 | 1166 if ( ! current_video ) { |
| 1167 return 0; | |
| 1168 } | |
| 0 | 1169 if ( screen != SDL_PublicSurface ) { |
| 1170 /* only screens have physical palettes */ | |
| 1171 which &= ~SDL_PHYSPAL; | |
| 1172 } else if( (screen->flags & SDL_HWPALETTE) != SDL_HWPALETTE ) { | |
| 1173 /* hardware palettes required for split colormaps */ | |
| 1174 which |= SDL_PHYSPAL | SDL_LOGPAL; | |
| 1175 } | |
| 1176 | |
| 1177 /* Verify the parameters */ | |
| 1178 pal = screen->format->palette; | |
| 1179 if( !pal ) { | |
| 1180 return 0; /* not a palettized surface */ | |
| 1181 } | |
| 1182 gotall = 1; | |
| 1183 palsize = 1 << screen->format->BitsPerPixel; | |
| 1184 if ( ncolors > (palsize - firstcolor) ) { | |
| 1185 ncolors = (palsize - firstcolor); | |
| 1186 gotall = 0; | |
| 1187 } | |
| 1188 | |
| 1189 if ( which & SDL_LOGPAL ) { | |
| 1190 /* | |
| 1191 * Logical palette change: The actual screen isn't affected, | |
| 1192 * but the internal colormap is altered so that the | |
| 1193 * interpretation of the pixel values (for blits etc) is | |
| 1194 * changed. | |
| 1195 */ | |
| 1196 SetPalette_logical(screen, colors, firstcolor, ncolors); | |
| 1197 } | |
| 1198 if ( which & SDL_PHYSPAL ) { | |
| 1199 SDL_VideoDevice *video = current_video; | |
| 1200 /* | |
| 1201 * Physical palette change: This doesn't affect the | |
| 1202 * program's idea of what the screen looks like, but changes | |
| 1203 * its actual appearance. | |
| 1204 */ | |
| 1205 if(!video) | |
| 1206 return gotall; /* video not yet initialized */ | |
| 1207 if(!video->physpal && !(which & SDL_LOGPAL) ) { | |
| 1208 /* Lazy physical palette allocation */ | |
| 1209 int size; | |
| 1210 SDL_Palette *pp = malloc(sizeof(*pp)); | |
| 1211 current_video->physpal = pp; | |
| 1212 pp->ncolors = pal->ncolors; | |
| 1213 size = pp->ncolors * sizeof(SDL_Color); | |
| 1214 pp->colors = malloc(size); | |
| 1215 memcpy(pp->colors, pal->colors, size); | |
| 1216 } | |
| 1217 if ( ! SetPalette_physical(screen, | |
| 1218 colors, firstcolor, ncolors) ) { | |
| 1219 gotall = 0; | |
| 1220 } | |
| 1221 } | |
| 1222 return gotall; | |
| 1223 } | |
| 1224 | |
| 1225 int SDL_SetColors(SDL_Surface *screen, SDL_Color *colors, int firstcolor, | |
| 1226 int ncolors) | |
| 1227 { | |
| 1228 return SDL_SetPalette(screen, SDL_LOGPAL | SDL_PHYSPAL, | |
| 1229 colors, firstcolor, ncolors); | |
| 1230 } | |
| 1231 | |
| 1232 /* | |
| 1233 * Clean up the video subsystem | |
| 1234 */ | |
| 1235 void SDL_VideoQuit (void) | |
| 1236 { | |
| 1237 SDL_Surface *ready_to_go; | |
| 1238 | |
| 1239 if ( current_video ) { | |
| 1240 SDL_VideoDevice *video = current_video; | |
| 1241 SDL_VideoDevice *this = current_video; | |
| 1242 | |
| 1243 /* Halt event processing before doing anything else */ | |
| 1244 SDL_StopEventLoop(); | |
| 1245 | |
| 1246 /* Clean up allocated window manager items */ | |
| 1247 if ( SDL_PublicSurface ) { | |
| 1248 SDL_PublicSurface = NULL; | |
| 1249 } | |
| 1250 SDL_CursorQuit(); | |
| 1251 | |
| 1252 /* Just in case... */ | |
| 1253 SDL_WM_GrabInputOff(); | |
| 1254 | |
| 1255 /* Clean up the system video */ | |
| 1256 video->VideoQuit(this); | |
| 1257 | |
| 1258 /* Free any lingering surfaces */ | |
| 1259 ready_to_go = SDL_ShadowSurface; | |
| 1260 SDL_ShadowSurface = NULL; | |
| 1261 SDL_FreeSurface(ready_to_go); | |
| 1262 if ( SDL_VideoSurface != NULL ) { | |
| 1263 ready_to_go = SDL_VideoSurface; | |
| 1264 SDL_VideoSurface = NULL; | |
| 1265 SDL_FreeSurface(ready_to_go); | |
| 1266 } | |
| 1267 SDL_PublicSurface = NULL; | |
| 1268 | |
| 1269 /* Clean up miscellaneous memory */ | |
| 1270 if ( video->physpal ) { | |
| 1271 free(video->physpal->colors); | |
| 1272 free(video->physpal); | |
| 1273 video->physpal = NULL; | |
| 1274 } | |
| 1275 if ( video->gammacols ) { | |
| 1276 free(video->gammacols); | |
| 1277 video->gammacols = NULL; | |
| 1278 } | |
| 1279 if ( video->gamma ) { | |
| 1280 free(video->gamma); | |
| 1281 video->gamma = NULL; | |
| 1282 } | |
|
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1283 if ( video->wm_title != NULL ) { |
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1284 free(video->wm_title); |
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1285 video->wm_title = NULL; |
| 0 | 1286 } |
|
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1287 if ( video->wm_icon != NULL ) { |
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1288 free(video->wm_icon); |
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1289 video->wm_icon = NULL; |
| 0 | 1290 } |
| 1291 | |
| 1292 /* Finish cleaning up video subsystem */ | |
| 1293 video->free(this); | |
| 1294 current_video = NULL; | |
| 1295 } | |
| 1296 return; | |
| 1297 } | |
| 1298 | |
| 1299 /* Load the GL driver library */ | |
| 1300 int SDL_GL_LoadLibrary(const char *path) | |
| 1301 { | |
| 1302 SDL_VideoDevice *video = current_video; | |
| 1303 SDL_VideoDevice *this = current_video; | |
| 1304 int retval; | |
| 1305 | |
| 1306 retval = -1; | |
|
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1307 if ( video == NULL ) { |
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1308 SDL_SetError("Video subsystem has not been initialized"); |
| 0 | 1309 } else { |
|
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1310 if ( video->GL_LoadLibrary ) { |
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1311 retval = video->GL_LoadLibrary(this, path); |
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1312 } else { |
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1313 SDL_SetError("No dynamic GL support in video driver"); |
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1314 } |
| 0 | 1315 } |
| 1316 return(retval); | |
| 1317 } | |
| 1318 | |
| 1319 void *SDL_GL_GetProcAddress(const char* proc) | |
| 1320 { | |
| 1321 SDL_VideoDevice *video = current_video; | |
| 1322 SDL_VideoDevice *this = current_video; | |
| 1323 void *func; | |
| 1324 | |
| 1325 func = NULL; | |
| 1326 if ( video->GL_GetProcAddress ) { | |
| 1327 if ( video->gl_config.driver_loaded ) { | |
| 1328 func = video->GL_GetProcAddress(this, proc); | |
| 1329 } else { | |
| 1330 SDL_SetError("No GL driver has been loaded"); | |
| 1331 } | |
| 1332 } else { | |
| 1333 SDL_SetError("No dynamic GL support in video driver"); | |
| 1334 } | |
| 1335 return func; | |
| 1336 } | |
| 1337 | |
| 1338 /* Set the specified GL attribute for setting up a GL video mode */ | |
| 1339 int SDL_GL_SetAttribute( SDL_GLattr attr, int value ) | |
| 1340 { | |
| 1341 int retval; | |
| 1342 SDL_VideoDevice *video = current_video; | |
| 1343 | |
| 1344 retval = 0; | |
| 1345 switch (attr) { | |
| 1346 case SDL_GL_RED_SIZE: | |
| 1347 video->gl_config.red_size = value; | |
| 1348 break; | |
| 1349 case SDL_GL_GREEN_SIZE: | |
| 1350 video->gl_config.green_size = value; | |
| 1351 break; | |
| 1352 case SDL_GL_BLUE_SIZE: | |
| 1353 video->gl_config.blue_size = value; | |
| 1354 break; | |
| 1355 case SDL_GL_ALPHA_SIZE: | |
| 1356 video->gl_config.alpha_size = value; | |
| 1357 break; | |
| 1358 case SDL_GL_DOUBLEBUFFER: | |
| 1359 video->gl_config.double_buffer = value; | |
| 1360 break; | |
| 1361 case SDL_GL_BUFFER_SIZE: | |
| 1362 video->gl_config.buffer_size = value; | |
| 1363 break; | |
| 1364 case SDL_GL_DEPTH_SIZE: | |
| 1365 video->gl_config.depth_size = value; | |
| 1366 break; | |
| 1367 case SDL_GL_STENCIL_SIZE: | |
| 1368 video->gl_config.stencil_size = value; | |
| 1369 break; | |
| 1370 case SDL_GL_ACCUM_RED_SIZE: | |
| 1371 video->gl_config.accum_red_size = value; | |
| 1372 break; | |
| 1373 case SDL_GL_ACCUM_GREEN_SIZE: | |
| 1374 video->gl_config.accum_green_size = value; | |
| 1375 break; | |
| 1376 case SDL_GL_ACCUM_BLUE_SIZE: | |
| 1377 video->gl_config.accum_blue_size = value; | |
| 1378 break; | |
| 1379 case SDL_GL_ACCUM_ALPHA_SIZE: | |
| 1380 video->gl_config.accum_alpha_size = value; | |
| 1381 break; | |
| 1382 default: | |
| 1383 SDL_SetError("Unknown OpenGL attribute"); | |
| 1384 retval = -1; | |
| 1385 break; | |
| 1386 } | |
| 1387 return(retval); | |
| 1388 } | |
| 1389 | |
| 1390 /* Retrieve an attribute value from the windowing system. */ | |
| 1391 int SDL_GL_GetAttribute(SDL_GLattr attr, int* value) | |
| 1392 { | |
| 1393 int retval = -1; | |
| 1394 SDL_VideoDevice* video = current_video; | |
| 1395 SDL_VideoDevice* this = current_video; | |
| 1396 | |
| 1397 if ( video->GL_GetAttribute ) { | |
| 1398 retval = this->GL_GetAttribute(this, attr, value); | |
|
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1399 } else { |
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1400 *value = 0; |
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1401 SDL_SetError("GL_GetAttribute not supported"); |
| 0 | 1402 } |
| 1403 return retval; | |
| 1404 } | |
| 1405 | |
| 1406 /* Perform a GL buffer swap on the current GL context */ | |
| 1407 void SDL_GL_SwapBuffers(void) | |
| 1408 { | |
| 1409 SDL_VideoDevice *video = current_video; | |
| 1410 SDL_VideoDevice *this = current_video; | |
| 1411 | |
| 1412 if ( video->screen->flags & SDL_OPENGL ) { | |
|
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1413 video->GL_SwapBuffers(this); |
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1414 } else { |
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1415 SDL_SetError("OpenGL video mode has not been set"); |
| 0 | 1416 } |
| 1417 } | |
| 1418 | |
| 1419 /* Update rects with locking */ | |
| 1420 void SDL_GL_UpdateRectsLock(SDL_VideoDevice* this, int numrects, SDL_Rect *rects) | |
| 1421 { | |
| 1422 SDL_GL_Lock(); | |
| 1423 SDL_GL_UpdateRects(numrects, rects); | |
| 1424 SDL_GL_Unlock(); | |
| 1425 } | |
| 1426 | |
| 1427 /* Update rects without state setting and changing (the caller is responsible for it) */ | |
| 1428 void SDL_GL_UpdateRects(int numrects, SDL_Rect *rects) | |
| 1429 { | |
| 1430 #ifdef HAVE_OPENGL | |
| 1431 SDL_VideoDevice *this = current_video; | |
| 1432 SDL_Rect update, tmp; | |
| 1433 int x, y, i; | |
| 1434 | |
| 1435 for ( i = 0; i < numrects; i++ ) | |
| 1436 { | |
| 1437 tmp.y = rects[i].y; | |
| 1438 tmp.h = rects[i].h; | |
| 1439 for ( y = 0; y <= rects[i].h / 256; y++ ) | |
| 1440 { | |
| 1441 tmp.x = rects[i].x; | |
| 1442 tmp.w = rects[i].w; | |
| 1443 for ( x = 0; x <= rects[i].w / 256; x++ ) | |
| 1444 { | |
| 1445 update.x = tmp.x; | |
| 1446 update.y = tmp.y; | |
| 1447 update.w = tmp.w; | |
| 1448 update.h = tmp.h; | |
| 1449 | |
| 1450 if ( update.w > 256 ) | |
| 1451 update.w = 256; | |
| 1452 | |
| 1453 if ( update.h > 256 ) | |
| 1454 update.h = 256; | |
| 1455 | |
| 1456 this->glFlush(); | |
| 1457 this->glTexSubImage2D( | |
| 1458 GL_TEXTURE_2D, | |
| 1459 0, | |
| 1460 0, | |
| 1461 0, | |
| 1462 update.w, | |
| 1463 update.h, | |
| 1464 this->is_32bit? GL_RGBA : GL_RGB, | |
| 1465 #ifdef GL_VERSION_1_2 | |
| 1466 this->is_32bit ? GL_UNSIGNED_BYTE : GL_UNSIGNED_SHORT_5_6_5, | |
| 1467 #else | |
| 1468 GL_UNSIGNED_BYTE, | |
| 1469 #endif | |
| 1470 (Uint8 *)this->screen->pixels + | |
| 1471 this->screen->format->BytesPerPixel * update.x + | |
| 1472 update.y * this->screen->pitch ); | |
| 1473 | |
| 1474 this->glFlush(); | |
| 1475 /* | |
| 1476 * Note the parens around the function name: | |
| 1477 * This is because some OpenGL implementations define glTexCoord etc | |
| 1478 * as macros, and we don't want them expanded here. | |
| 1479 */ | |
| 1480 this->glBegin(GL_TRIANGLE_STRIP); | |
| 1481 (this->glTexCoord2f)( 0.0, 0.0 ); | |
| 1482 (this->glVertex2i)( update.x, update.y ); | |
| 1483 (this->glTexCoord2f)( (float)(update.w / 256.0), 0.0 ); | |
| 1484 (this->glVertex2i)( update.x + update.w, update.y ); | |
| 1485 (this->glTexCoord2f)( 0.0, (float)(update.h / 256.0) ); | |
| 1486 (this->glVertex2i)( update.x, update.y + update.h ); | |
| 1487 (this->glTexCoord2f)( (float)(update.w / 256.0), (float)(update.h / 256.0) ); | |
| 1488 (this->glVertex2i)( update.x + update.w , update.y + update.h ); | |
| 1489 this->glEnd(); | |
| 1490 | |
| 1491 tmp.x += 256; | |
| 1492 tmp.w -= 256; | |
| 1493 } | |
| 1494 tmp.y += 256; | |
| 1495 tmp.h -= 256; | |
| 1496 } | |
| 1497 } | |
| 1498 #endif | |
| 1499 } | |
| 1500 | |
| 1501 /* Lock == save current state */ | |
| 1502 void SDL_GL_Lock() | |
| 1503 { | |
| 1504 #ifdef HAVE_OPENGL | |
| 1505 lock_count--; | |
| 1506 if (lock_count==-1) | |
| 1507 { | |
| 1508 SDL_VideoDevice *this = current_video; | |
| 1509 | |
| 1510 this->glPushAttrib( GL_ALL_ATTRIB_BITS ); /* TODO: narrow range of what is saved */ | |
|
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1511 #ifdef GL_CLIENT_PIXEL_STORE_BIT |
| 0 | 1512 this->glPushClientAttrib( GL_CLIENT_PIXEL_STORE_BIT ); |
|
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1513 #endif |
| 0 | 1514 |
| 1515 this->glEnable(GL_TEXTURE_2D); | |
| 1516 this->glEnable(GL_BLEND); | |
| 1517 this->glDisable(GL_FOG); | |
| 1518 this->glDisable(GL_ALPHA_TEST); | |
| 1519 this->glDisable(GL_DEPTH_TEST); | |
| 1520 this->glDisable(GL_SCISSOR_TEST); | |
| 1521 this->glDisable(GL_STENCIL_TEST); | |
| 1522 this->glDisable(GL_CULL_FACE); | |
| 1523 | |
| 1524 this->glBindTexture( GL_TEXTURE_2D, this->texture ); | |
| 1525 this->glTexEnvf( GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE ); | |
| 1526 this->glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST ); | |
| 1527 this->glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST ); | |
| 1528 this->glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT ); | |
| 1529 this->glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT ); | |
| 1530 | |
| 1531 this->glPixelStorei( GL_UNPACK_ROW_LENGTH, this->screen->pitch / this->screen->format->BytesPerPixel ); | |
| 1532 this->glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA); | |
| 1533 (this->glColor4f)(1.0, 1.0, 1.0, 1.0); /* Solaris workaround */ | |
| 1534 | |
| 1535 this->glViewport(0, 0, this->screen->w, this->screen->h); | |
| 1536 this->glMatrixMode(GL_PROJECTION); | |
| 1537 this->glPushMatrix(); | |
| 1538 this->glLoadIdentity(); | |
| 1539 | |
| 1540 this->glOrtho(0.0, (GLdouble) this->screen->w, (GLdouble) this->screen->h, 0.0, 0.0, 1.0); | |
| 1541 | |
| 1542 this->glMatrixMode(GL_MODELVIEW); | |
| 1543 this->glPushMatrix(); | |
| 1544 this->glLoadIdentity(); | |
| 1545 } | |
| 1546 #endif | |
| 1547 } | |
| 1548 | |
| 1549 /* Unlock == restore saved state */ | |
| 1550 void SDL_GL_Unlock() | |
| 1551 { | |
| 1552 #ifdef HAVE_OPENGL | |
| 1553 lock_count++; | |
| 1554 if (lock_count==0) | |
| 1555 { | |
| 1556 SDL_VideoDevice *this = current_video; | |
| 1557 | |
| 1558 this->glPopMatrix(); | |
| 1559 this->glMatrixMode(GL_PROJECTION); | |
| 1560 this->glPopMatrix(); | |
| 1561 | |
| 1562 this->glPopClientAttrib(); | |
| 1563 this->glPopAttrib(); | |
| 1564 } | |
| 1565 #endif | |
| 1566 } | |
| 1567 | |
| 1568 /* | |
| 1569 * Sets/Gets the title and icon text of the display window, if any. | |
| 1570 */ | |
| 1571 void SDL_WM_SetCaption (const char *title, const char *icon) | |
| 1572 { | |
| 1573 SDL_VideoDevice *video = current_video; | |
| 1574 SDL_VideoDevice *this = current_video; | |
| 1575 | |
|
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|
1576 if ( video ) { |
|
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1577 if ( title ) { |
|
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1578 if ( video->wm_title ) { |
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1579 free(video->wm_title); |
|
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1580 } |
|
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1581 video->wm_title = (char *)malloc(strlen(title)+1); |
|
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1582 if ( video->wm_title != NULL ) { |
|
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1583 strcpy(video->wm_title, title); |
|
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1584 } |
| 0 | 1585 } |
|
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1586 if ( icon ) { |
|
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1587 if ( video->wm_icon ) { |
|
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|
1588 free(video->wm_icon); |
|
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1589 } |
|
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|
1590 video->wm_icon = (char *)malloc(strlen(icon)+1); |
|
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1591 if ( video->wm_icon != NULL ) { |
|
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1592 strcpy(video->wm_icon, icon); |
|
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1593 } |
| 0 | 1594 } |
|
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1595 if ( (title || icon) && (video->SetCaption != NULL) ) { |
|
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1596 video->SetCaption(this, video->wm_title,video->wm_icon); |
| 0 | 1597 } |
| 1598 } | |
| 1599 } | |
| 1600 void SDL_WM_GetCaption (char **title, char **icon) | |
| 1601 { | |
|
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1602 SDL_VideoDevice *video = current_video; |
|
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1603 |
|
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1604 if ( video ) { |
|
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1605 if ( title ) { |
|
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1606 *title = video->wm_title; |
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1607 } |
|
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1608 if ( icon ) { |
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1609 *icon = video->wm_icon; |
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1610 } |
| 0 | 1611 } |
| 1612 } | |
| 1613 | |
| 1614 /* Utility function used by SDL_WM_SetIcon() */ | |
| 1615 static void CreateMaskFromColorKey(SDL_Surface *icon, Uint8 *mask) | |
| 1616 { | |
| 1617 int x, y; | |
| 1618 Uint32 colorkey; | |
| 1619 #define SET_MASKBIT(icon, x, y, mask) \ | |
| 1620 mask[(y*((icon->w+7)/8))+(x/8)] &= ~(0x01<<(7-(x%8))) | |
| 1621 | |
| 1622 colorkey = icon->format->colorkey; | |
| 1623 switch (icon->format->BytesPerPixel) { | |
| 1624 case 1: { Uint8 *pixels; | |
| 1625 for ( y=0; y<icon->h; ++y ) { | |
| 1626 pixels = (Uint8 *)icon->pixels + y*icon->pitch; | |
| 1627 for ( x=0; x<icon->w; ++x ) { | |
| 1628 if ( *pixels++ == colorkey ) { | |
| 1629 SET_MASKBIT(icon, x, y, mask); | |
| 1630 } | |
| 1631 } | |
| 1632 } | |
| 1633 } | |
| 1634 break; | |
| 1635 | |
| 1636 case 2: { Uint16 *pixels; | |
| 1637 for ( y=0; y<icon->h; ++y ) { | |
| 1638 pixels = (Uint16 *)icon->pixels + | |
| 1639 y*icon->pitch/2; | |
| 1640 for ( x=0; x<icon->w; ++x ) { | |
| 1641 if ( *pixels++ == colorkey ) { | |
| 1642 SET_MASKBIT(icon, x, y, mask); | |
| 1643 } | |
| 1644 } | |
| 1645 } | |
| 1646 } | |
| 1647 break; | |
| 1648 | |
| 1649 case 4: { Uint32 *pixels; | |
| 1650 for ( y=0; y<icon->h; ++y ) { | |
| 1651 pixels = (Uint32 *)icon->pixels + | |
| 1652 y*icon->pitch/4; | |
| 1653 for ( x=0; x<icon->w; ++x ) { | |
| 1654 if ( *pixels++ == colorkey ) { | |
| 1655 SET_MASKBIT(icon, x, y, mask); | |
| 1656 } | |
| 1657 } | |
| 1658 } | |
| 1659 } | |
| 1660 break; | |
| 1661 } | |
| 1662 } | |
| 1663 | |
| 1664 /* | |
| 1665 * Sets the window manager icon for the display window. | |
| 1666 */ | |
| 1667 void SDL_WM_SetIcon (SDL_Surface *icon, Uint8 *mask) | |
| 1668 { | |
| 1669 SDL_VideoDevice *video = current_video; | |
| 1670 SDL_VideoDevice *this = current_video; | |
| 1671 | |
| 1672 if ( icon && video->SetIcon ) { | |
| 1673 /* Generate a mask if necessary, and create the icon! */ | |
| 1674 if ( mask == NULL ) { | |
| 1675 int mask_len = icon->h*(icon->w+7)/8; | |
| 1676 mask = (Uint8 *)malloc(mask_len); | |
| 1677 if ( mask == NULL ) { | |
| 1678 return; | |
| 1679 } | |
| 1680 memset(mask, ~0, mask_len); | |
| 1681 if ( icon->flags & SDL_SRCCOLORKEY ) { | |
| 1682 CreateMaskFromColorKey(icon, mask); | |
| 1683 } | |
| 1684 video->SetIcon(video, icon, mask); | |
| 1685 free(mask); | |
| 1686 } else { | |
| 1687 video->SetIcon(this, icon, mask); | |
| 1688 } | |
| 1689 } | |
| 1690 } | |
| 1691 | |
| 1692 /* | |
| 1693 * Grab or ungrab the keyboard and mouse input. | |
| 1694 * This function returns the final grab mode after calling the | |
| 1695 * driver dependent function. | |
| 1696 */ | |
| 1697 static SDL_GrabMode SDL_WM_GrabInputRaw(SDL_GrabMode mode) | |
| 1698 { | |
| 1699 SDL_VideoDevice *video = current_video; | |
| 1700 SDL_VideoDevice *this = current_video; | |
| 1701 | |
| 1702 /* Only do something if we have support for grabs */ | |
| 1703 if ( video->GrabInput == NULL ) { | |
| 1704 return(video->input_grab); | |
| 1705 } | |
| 1706 | |
| 1707 /* If the final grab mode if off, only then do we actually grab */ | |
| 1708 #ifdef DEBUG_GRAB | |
| 1709 printf("SDL_WM_GrabInputRaw(%d) ... ", mode); | |
| 1710 #endif | |
| 1711 if ( mode == SDL_GRAB_OFF ) { | |
| 1712 if ( video->input_grab != SDL_GRAB_OFF ) { | |
| 1713 mode = video->GrabInput(this, mode); | |
| 1714 } | |
| 1715 } else { | |
| 1716 if ( video->input_grab == SDL_GRAB_OFF ) { | |
| 1717 mode = video->GrabInput(this, mode); | |
| 1718 } | |
| 1719 } | |
| 1720 if ( mode != video->input_grab ) { | |
| 1721 video->input_grab = mode; | |
| 1722 if ( video->CheckMouseMode ) { | |
| 1723 video->CheckMouseMode(this); | |
| 1724 } | |
| 1725 } | |
| 1726 #ifdef DEBUG_GRAB | |
| 1727 printf("Final mode %d\n", video->input_grab); | |
| 1728 #endif | |
| 1729 | |
| 1730 /* Return the final grab state */ | |
| 1731 if ( mode >= SDL_GRAB_FULLSCREEN ) { | |
| 1732 mode -= SDL_GRAB_FULLSCREEN; | |
| 1733 } | |
| 1734 return(mode); | |
| 1735 } | |
| 1736 SDL_GrabMode SDL_WM_GrabInput(SDL_GrabMode mode) | |
| 1737 { | |
| 1738 SDL_VideoDevice *video = current_video; | |
| 1739 | |
|
11
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|
1740 /* If the video isn't initialized yet, we can't do anything */ |
|
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|
1741 if ( ! video ) { |
|
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|
1742 return SDL_GRAB_OFF; |
|
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|
1743 } |
| 0 | 1744 |
| 1745 /* Return the current mode on query */ | |
| 1746 if ( mode == SDL_GRAB_QUERY ) { | |
| 1747 mode = video->input_grab; | |
| 1748 if ( mode >= SDL_GRAB_FULLSCREEN ) { | |
| 1749 mode -= SDL_GRAB_FULLSCREEN; | |
| 1750 } | |
| 1751 return(mode); | |
| 1752 } | |
| 1753 | |
| 1754 #ifdef DEBUG_GRAB | |
| 1755 printf("SDL_WM_GrabInput(%d) ... ", mode); | |
| 1756 #endif | |
| 1757 /* If the video surface is fullscreen, we always grab */ | |
| 1758 if ( mode >= SDL_GRAB_FULLSCREEN ) { | |
| 1759 mode -= SDL_GRAB_FULLSCREEN; | |
| 1760 } | |
| 1761 if ( SDL_VideoSurface && (SDL_VideoSurface->flags & SDL_FULLSCREEN) ) { | |
| 1762 mode += SDL_GRAB_FULLSCREEN; | |
| 1763 } | |
| 1764 return(SDL_WM_GrabInputRaw(mode)); | |
| 1765 } | |
| 1766 static SDL_GrabMode SDL_WM_GrabInputOff(void) | |
| 1767 { | |
| 1768 SDL_GrabMode mode; | |
| 1769 | |
| 1770 /* First query the current grab state */ | |
| 1771 mode = SDL_WM_GrabInput(SDL_GRAB_QUERY); | |
| 1772 | |
| 1773 /* Now explicitly turn off input grab */ | |
| 1774 SDL_WM_GrabInputRaw(SDL_GRAB_OFF); | |
| 1775 | |
| 1776 /* Return the old state */ | |
| 1777 return(mode); | |
| 1778 } | |
| 1779 | |
| 1780 /* | |
| 1781 * Iconify the window in window managed environments. | |
| 1782 * A successful iconification will result in an SDL_APPACTIVE loss event. | |
| 1783 */ | |
| 1784 int SDL_WM_IconifyWindow(void) | |
| 1785 { | |
| 1786 SDL_VideoDevice *video = current_video; | |
| 1787 SDL_VideoDevice *this = current_video; | |
| 1788 int retval; | |
| 1789 | |
| 1790 retval = 0; | |
| 1791 if ( video->IconifyWindow ) { | |
| 1792 retval = video->IconifyWindow(this); | |
| 1793 } | |
| 1794 return(retval); | |
| 1795 } | |
| 1796 | |
| 1797 /* | |
| 1798 * Toggle fullscreen mode | |
| 1799 */ | |
| 1800 int SDL_WM_ToggleFullScreen(SDL_Surface *surface) | |
| 1801 { | |
| 1802 SDL_VideoDevice *video = current_video; | |
| 1803 SDL_VideoDevice *this = current_video; | |
| 1804 int toggled; | |
| 1805 | |
| 1806 toggled = 0; | |
| 1807 if ( SDL_PublicSurface && (surface == SDL_PublicSurface) && | |
| 1808 video->ToggleFullScreen ) { | |
| 1809 if ( surface->flags & SDL_FULLSCREEN ) { | |
| 1810 toggled = video->ToggleFullScreen(this, 0); | |
| 1811 if ( toggled ) { | |
| 1812 SDL_VideoSurface->flags &= ~SDL_FULLSCREEN; | |
| 1813 SDL_PublicSurface->flags &= ~SDL_FULLSCREEN; | |
| 1814 } | |
| 1815 } else { | |
| 1816 toggled = video->ToggleFullScreen(this, 1); | |
| 1817 if ( toggled ) { | |
| 1818 SDL_VideoSurface->flags |= SDL_FULLSCREEN; | |
| 1819 SDL_PublicSurface->flags |= SDL_FULLSCREEN; | |
| 1820 } | |
| 1821 } | |
| 1822 /* Double-check the grab state inside SDL_WM_GrabInput() */ | |
| 1823 if ( toggled ) { | |
| 1824 SDL_WM_GrabInput(video->input_grab); | |
| 1825 } | |
| 1826 } | |
| 1827 return(toggled); | |
| 1828 } | |
| 1829 | |
| 1830 /* | |
| 1831 * Get some platform dependent window manager information | |
| 1832 */ | |
| 1833 int SDL_GetWMInfo (SDL_SysWMinfo *info) | |
| 1834 { | |
| 1835 SDL_VideoDevice *video = current_video; | |
| 1836 SDL_VideoDevice *this = current_video; | |
| 1837 | |
| 1838 if ( video && video->GetWMInfo ) { | |
| 1839 return(video->GetWMInfo(this, info)); | |
| 1840 } else { | |
| 1841 return(0); | |
| 1842 } | |
| 1843 } |