Mercurial > sdl-ios-xcode
annotate src/video/SDL_video.c @ 650:fe445b59d307
We need to lookup the address of glGetString before calling GL_MakeCurrent(),
since the X11 target needs to query for extensions in there...hopefully this
other platforms don't need to have a current context before symbol lookup
works or something strange like that... --ryan.
| author | Ryan C. Gordon <icculus@icculus.org> |
|---|---|
| date | Sat, 12 Jul 2003 13:30:30 +0000 |
| parents | 550bccdf04bd |
| children | 9c42ee1b7d77 |
| 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 |
| 567 | 57 #ifdef ENABLE_QTOPIA |
| 58 &Qtopia_bootstrap, | |
| 59 #endif | |
| 0 | 60 #ifdef ENABLE_FBCON |
| 61 &FBCON_bootstrap, | |
| 62 #endif | |
|
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63 #ifdef ENABLE_DIRECTFB |
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64 &DirectFB_bootstrap, |
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65 #endif |
| 0 | 66 #ifdef ENABLE_PS2GS |
| 67 &PS2GS_bootstrap, | |
| 68 #endif | |
| 69 #ifdef ENABLE_GGI | |
| 70 &GGI_bootstrap, | |
| 71 #endif | |
|
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72 #ifdef ENABLE_VGL |
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73 &VGL_bootstrap, |
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74 #endif |
| 0 | 75 #ifdef ENABLE_SVGALIB |
| 76 &SVGALIB_bootstrap, | |
| 77 #endif | |
| 78 #ifdef ENABLE_AALIB | |
|
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79 &AALIB_bootstrap, |
| 0 | 80 #endif |
| 81 #ifdef ENABLE_DIRECTX | |
| 82 &DIRECTX_bootstrap, | |
| 83 #endif | |
| 84 #ifdef ENABLE_WINDIB | |
| 85 &WINDIB_bootstrap, | |
| 86 #endif | |
| 87 #ifdef ENABLE_BWINDOW | |
| 88 &BWINDOW_bootstrap, | |
| 89 #endif | |
| 90 #ifdef ENABLE_TOOLBOX | |
| 91 &TOOLBOX_bootstrap, | |
| 92 #endif | |
| 93 #ifdef ENABLE_DRAWSPROCKET | |
| 94 &DSp_bootstrap, | |
| 95 #endif | |
|
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96 #ifdef ENABLE_QUARTZ |
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97 &QZ_bootstrap, |
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98 #endif |
| 0 | 99 #ifdef ENABLE_CYBERGRAPHICS |
| 100 &CGX_bootstrap, | |
| 101 #endif | |
|
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102 #ifdef ENABLE_PHOTON |
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103 &ph_bootstrap, |
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104 #endif |
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105 #ifdef ENABLE_EPOC |
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106 &EPOC_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_PICOGUI |
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115 &PG_bootstrap, |
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116 #endif |
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117 #ifdef ENABLE_DC |
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118 &DC_bootstrap, |
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119 #endif |
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120 #ifdef ENABLE_RISCOS |
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121 &RISCOS_bootstrap, |
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122 #endif |
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123 #ifdef ENABLE_DUMMYVIDEO |
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124 &DUMMY_bootstrap, |
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125 #endif |
| 0 | 126 NULL |
| 127 }; | |
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128 |
| 0 | 129 SDL_VideoDevice *current_video = NULL; |
| 130 | |
| 131 /* Various local functions */ | |
| 132 int SDL_VideoInit(const char *driver_name, Uint32 flags); | |
| 133 void SDL_VideoQuit(void); | |
| 134 void SDL_GL_UpdateRectsLock(SDL_VideoDevice* this, int numrects, SDL_Rect* rects); | |
| 135 | |
| 136 static SDL_GrabMode SDL_WM_GrabInputOff(void); | |
| 137 #ifdef HAVE_OPENGL | |
| 138 static int lock_count = 0; | |
| 139 #endif | |
| 140 | |
| 141 | |
| 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 #if 0 /* This will be replaced with a better driver selection API */ | |
| 173 if ( strrchr(driver_name, ':') != NULL ) { | |
| 174 index = atoi(strrchr(driver_name, ':')+1); | |
| 175 } | |
| 176 #endif | |
| 177 for ( i=0; bootstrap[i]; ++i ) { | |
| 178 if ( strncmp(bootstrap[i]->name, driver_name, | |
| 179 strlen(bootstrap[i]->name)) == 0 ) { | |
| 180 if ( bootstrap[i]->available() ) { | |
| 181 video = bootstrap[i]->create(index); | |
| 182 break; | |
| 183 } | |
| 184 } | |
| 185 } | |
| 186 } else { | |
| 187 for ( i=0; bootstrap[i]; ++i ) { | |
| 188 if ( bootstrap[i]->available() ) { | |
| 189 video = bootstrap[i]->create(index); | |
| 190 if ( video != NULL ) { | |
| 191 break; | |
| 192 } | |
| 193 } | |
| 194 } | |
| 195 } | |
| 196 if ( video == NULL ) { | |
| 197 SDL_SetError("No available video device"); | |
| 198 return(-1); | |
| 199 } | |
| 200 current_video = video; | |
| 201 current_video->name = bootstrap[i]->name; | |
| 202 | |
| 203 /* Do some basic variable initialization */ | |
| 204 video->screen = NULL; | |
| 205 video->shadow = NULL; | |
| 206 video->visible = NULL; | |
| 207 video->physpal = NULL; | |
| 208 video->gammacols = NULL; | |
| 209 video->gamma = NULL; | |
| 210 video->wm_title = NULL; | |
| 211 video->wm_icon = NULL; | |
| 212 video->offset_x = 0; | |
| 213 video->offset_y = 0; | |
| 214 memset(&video->info, 0, (sizeof video->info)); | |
| 215 | |
| 216 /* Set some very sane GL defaults */ | |
| 217 video->gl_config.driver_loaded = 0; | |
| 218 video->gl_config.dll_handle = NULL; | |
| 219 video->gl_config.red_size = 5; | |
| 220 #if 1 /* This seems to work on more video cards, as a default */ | |
| 221 video->gl_config.green_size = 5; | |
| 222 #else | |
| 223 video->gl_config.green_size = 6; | |
| 224 #endif | |
| 225 video->gl_config.blue_size = 5; | |
| 226 video->gl_config.alpha_size = 0; | |
| 227 video->gl_config.buffer_size = 0; | |
| 228 video->gl_config.depth_size = 16; | |
| 229 video->gl_config.stencil_size = 0; | |
| 230 video->gl_config.double_buffer = 1; | |
| 231 video->gl_config.accum_red_size = 0; | |
| 232 video->gl_config.accum_green_size = 0; | |
| 233 video->gl_config.accum_blue_size = 0; | |
| 234 video->gl_config.accum_alpha_size = 0; | |
|
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235 video->gl_config.stereo = 0; |
| 0 | 236 |
| 237 /* Initialize the video subsystem */ | |
| 238 memset(&vformat, 0, sizeof(vformat)); | |
| 239 if ( video->VideoInit(video, &vformat) < 0 ) { | |
| 240 SDL_VideoQuit(); | |
| 241 return(-1); | |
| 242 } | |
| 243 | |
| 244 /* Create a zero sized video surface of the appropriate format */ | |
| 245 video_flags = SDL_SWSURFACE; | |
| 246 SDL_VideoSurface = SDL_CreateRGBSurface(video_flags, 0, 0, | |
| 247 vformat.BitsPerPixel, | |
| 248 vformat.Rmask, vformat.Gmask, vformat.Bmask, 0); | |
| 249 if ( SDL_VideoSurface == NULL ) { | |
| 250 SDL_VideoQuit(); | |
| 251 return(-1); | |
| 252 } | |
| 253 SDL_PublicSurface = NULL; /* Until SDL_SetVideoMode() */ | |
| 254 | |
| 255 #if 0 /* Don't change the current palette - may be used by other programs. | |
| 256 * The application can't do anything with the display surface until | |
| 257 * a video mode has been set anyway. :) | |
| 258 */ | |
| 259 /* If we have a palettized surface, create a default palette */ | |
| 260 if ( SDL_VideoSurface->format->palette ) { | |
| 261 SDL_PixelFormat *vf = SDL_VideoSurface->format; | |
| 262 SDL_DitherColors(vf->palette->colors, vf->BitsPerPixel); | |
| 263 video->SetColors(video, | |
| 264 0, vf->palette->ncolors, vf->palette->colors); | |
| 265 } | |
| 266 #endif | |
| 267 video->info.vfmt = SDL_VideoSurface->format; | |
| 268 | |
| 269 /* Start the event loop */ | |
| 270 if ( SDL_StartEventLoop(flags) < 0 ) { | |
| 271 SDL_VideoQuit(); | |
| 272 return(-1); | |
| 273 } | |
| 274 SDL_CursorInit(flags & SDL_INIT_EVENTTHREAD); | |
| 275 | |
| 276 /* We're ready to go! */ | |
| 277 return(0); | |
| 278 } | |
| 279 | |
| 280 char *SDL_VideoDriverName(char *namebuf, int maxlen) | |
| 281 { | |
| 282 if ( current_video != NULL ) { | |
| 283 strncpy(namebuf, current_video->name, maxlen-1); | |
| 284 namebuf[maxlen-1] = '\0'; | |
| 285 return(namebuf); | |
| 286 } | |
| 287 return(NULL); | |
| 288 } | |
| 289 | |
| 290 /* | |
| 291 * Get the current display surface | |
| 292 */ | |
| 293 SDL_Surface *SDL_GetVideoSurface(void) | |
| 294 { | |
| 295 SDL_Surface *visible; | |
| 296 | |
| 297 visible = NULL; | |
| 298 if ( current_video ) { | |
| 299 visible = current_video->visible; | |
| 300 } | |
| 301 return(visible); | |
| 302 } | |
| 303 | |
| 304 /* | |
| 305 * Get the current information about the video hardware | |
| 306 */ | |
| 307 const SDL_VideoInfo *SDL_GetVideoInfo(void) | |
| 308 { | |
| 309 const SDL_VideoInfo *info; | |
| 310 | |
| 311 info = NULL; | |
| 312 if ( current_video ) { | |
| 313 info = ¤t_video->info; | |
| 314 } | |
| 315 return(info); | |
| 316 } | |
| 317 | |
| 318 /* | |
| 319 * Return a pointer to an array of available screen dimensions for the | |
| 320 * given format, sorted largest to smallest. Returns NULL if there are | |
| 321 * no dimensions available for a particular format, or (SDL_Rect **)-1 | |
| 322 * if any dimension is okay for the given format. If 'format' is NULL, | |
| 323 * the mode list will be for the format given by SDL_GetVideoInfo()->vfmt | |
| 324 */ | |
| 325 SDL_Rect ** SDL_ListModes (SDL_PixelFormat *format, Uint32 flags) | |
| 326 { | |
| 327 SDL_VideoDevice *video = current_video; | |
| 328 SDL_VideoDevice *this = current_video; | |
| 329 SDL_Rect **modes; | |
| 330 | |
| 331 modes = NULL; | |
| 332 if ( SDL_VideoSurface ) { | |
| 333 if ( format == NULL ) { | |
| 334 format = SDL_VideoSurface->format; | |
| 335 } | |
| 336 modes = video->ListModes(this, format, flags); | |
| 337 } | |
| 338 return(modes); | |
| 339 } | |
| 340 | |
| 341 /* | |
| 342 * Check to see if a particular video mode is supported. | |
| 343 * It returns 0 if the requested mode is not supported under any bit depth, | |
| 344 * or returns the bits-per-pixel of the closest available mode with the | |
| 345 * given width and height. If this bits-per-pixel is different from the | |
| 346 * one used when setting the video mode, SDL_SetVideoMode() will succeed, | |
| 347 * but will emulate the requested bits-per-pixel with a shadow surface. | |
| 348 */ | |
| 349 static Uint8 SDL_closest_depths[4][8] = { | |
| 350 /* 8 bit closest depth ordering */ | |
| 351 { 0, 8, 16, 15, 32, 24, 0, 0 }, | |
| 352 /* 15,16 bit closest depth ordering */ | |
| 353 { 0, 16, 15, 32, 24, 8, 0, 0 }, | |
| 354 /* 24 bit closest depth ordering */ | |
| 355 { 0, 24, 32, 16, 15, 8, 0, 0 }, | |
| 356 /* 32 bit closest depth ordering */ | |
| 357 { 0, 32, 16, 15, 24, 8, 0, 0 } | |
| 358 }; | |
| 359 | |
| 360 int SDL_VideoModeOK (int width, int height, int bpp, Uint32 flags) | |
| 361 { | |
| 362 int table, b, i; | |
| 363 int supported; | |
| 364 SDL_PixelFormat format; | |
| 365 SDL_Rect **sizes; | |
| 366 | |
| 367 /* Currently 1 and 4 bpp are not supported */ | |
| 368 if ( bpp < 8 || bpp > 32 ) { | |
| 369 return(0); | |
| 370 } | |
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371 if ( (width <= 0) || (height <= 0) ) { |
| 0 | 372 return(0); |
| 373 } | |
| 374 | |
| 375 /* Search through the list valid of modes */ | |
| 376 memset(&format, 0, sizeof(format)); | |
| 377 supported = 0; | |
| 378 table = ((bpp+7)/8)-1; | |
| 379 SDL_closest_depths[table][0] = bpp; | |
| 380 SDL_closest_depths[table][7] = 0; | |
| 381 for ( b = 0; !supported && SDL_closest_depths[table][b]; ++b ) { | |
| 382 format.BitsPerPixel = SDL_closest_depths[table][b]; | |
| 383 sizes = SDL_ListModes(&format, flags); | |
| 384 if ( sizes == (SDL_Rect **)0 ) { | |
| 385 /* No sizes supported at this bit-depth */ | |
| 386 continue; | |
| 387 } else | |
| 388 #ifdef macintosh /* MPW optimization bug? */ | |
| 389 if ( (sizes == (SDL_Rect **)0xFFFFFFFF) || | |
| 390 #else | |
| 391 if ( (sizes == (SDL_Rect **)-1) || | |
| 392 #endif | |
| 393 current_video->handles_any_size ) { | |
| 394 /* Any size supported at this bit-depth */ | |
| 395 supported = 1; | |
| 396 continue; | |
| 397 } else | |
| 398 for ( i=0; sizes[i]; ++i ) { | |
| 399 if ((sizes[i]->w == width) && (sizes[i]->h == height)) { | |
| 400 supported = 1; | |
| 401 break; | |
| 402 } | |
| 403 } | |
| 404 } | |
| 405 if ( supported ) { | |
| 406 --b; | |
| 407 return(SDL_closest_depths[table][b]); | |
| 408 } else { | |
| 409 return(0); | |
| 410 } | |
| 411 } | |
| 412 | |
| 413 /* | |
| 414 * Get the closest non-emulated video mode to the one requested | |
| 415 */ | |
| 416 static int SDL_GetVideoMode (int *w, int *h, int *BitsPerPixel, Uint32 flags) | |
| 417 { | |
| 418 int table, b, i; | |
| 419 int supported; | |
| 420 int native_bpp; | |
| 421 SDL_PixelFormat format; | |
| 422 SDL_Rect **sizes; | |
| 423 | |
|
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424 /* Check parameters */ |
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425 if ( *BitsPerPixel < 8 || *BitsPerPixel > 32 ) { |
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426 SDL_SetError("Invalid bits per pixel (range is {8...32})"); |
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427 return(0); |
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428 } |
|
430
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429 if ((*w <= 0) || (*h <= 0)) { |
|
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430 SDL_SetError("Invalid width or height"); |
|
430
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431 return(0); |
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432 } |
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433 |
| 0 | 434 /* Try the original video mode, get the closest depth */ |
| 435 native_bpp = SDL_VideoModeOK(*w, *h, *BitsPerPixel, flags); | |
| 436 if ( native_bpp == *BitsPerPixel ) { | |
| 437 return(1); | |
| 438 } | |
| 439 if ( native_bpp > 0 ) { | |
| 440 *BitsPerPixel = native_bpp; | |
| 441 return(1); | |
| 442 } | |
| 443 | |
| 444 /* No exact size match at any depth, look for closest match */ | |
| 445 memset(&format, 0, sizeof(format)); | |
| 446 supported = 0; | |
| 447 table = ((*BitsPerPixel+7)/8)-1; | |
| 448 SDL_closest_depths[table][0] = *BitsPerPixel; | |
| 449 SDL_closest_depths[table][7] = SDL_VideoSurface->format->BitsPerPixel; | |
| 450 for ( b = 0; !supported && SDL_closest_depths[table][b]; ++b ) { | |
| 451 format.BitsPerPixel = SDL_closest_depths[table][b]; | |
| 452 sizes = SDL_ListModes(&format, flags); | |
| 453 if ( sizes == (SDL_Rect **)0 ) { | |
| 454 /* No sizes supported at this bit-depth */ | |
| 455 continue; | |
| 456 } | |
| 457 for ( i=0; sizes[i]; ++i ) { | |
| 458 if ((sizes[i]->w < *w) || (sizes[i]->h < *h)) { | |
| 459 if ( i > 0 ) { | |
| 460 --i; | |
| 461 *w = sizes[i]->w; | |
| 462 *h = sizes[i]->h; | |
| 463 *BitsPerPixel = SDL_closest_depths[table][b]; | |
| 464 supported = 1; | |
| 465 } else { | |
| 466 /* Largest mode too small... */; | |
| 467 } | |
| 468 break; | |
| 469 } | |
| 470 } | |
| 471 if ( (i > 0) && ! sizes[i] ) { | |
| 472 /* The smallest mode was larger than requested, OK */ | |
| 473 --i; | |
| 474 *w = sizes[i]->w; | |
| 475 *h = sizes[i]->h; | |
| 476 *BitsPerPixel = SDL_closest_depths[table][b]; | |
| 477 supported = 1; | |
| 478 } | |
| 479 } | |
| 480 if ( ! supported ) { | |
| 481 SDL_SetError("No video mode large enough for %dx%d", *w, *h); | |
| 482 } | |
| 483 return(supported); | |
| 484 } | |
| 485 | |
| 486 /* This should probably go somewhere else -- like SDL_surface.c */ | |
| 487 static void SDL_ClearSurface(SDL_Surface *surface) | |
| 488 { | |
| 489 Uint32 black; | |
| 490 | |
| 491 black = SDL_MapRGB(surface->format, 0, 0, 0); | |
| 492 SDL_FillRect(surface, NULL, black); | |
| 493 if ((surface->flags&SDL_HWSURFACE) && (surface->flags&SDL_DOUBLEBUF)) { | |
| 494 SDL_Flip(surface); | |
| 495 SDL_FillRect(surface, NULL, black); | |
| 496 } | |
| 497 SDL_Flip(surface); | |
| 498 } | |
| 499 | |
| 500 /* | |
| 501 * Create a shadow surface suitable for fooling the app. :-) | |
| 502 */ | |
| 503 static void SDL_CreateShadowSurface(int depth) | |
| 504 { | |
| 505 Uint32 Rmask, Gmask, Bmask; | |
| 506 | |
| 507 /* Allocate the shadow surface */ | |
| 508 if ( depth == (SDL_VideoSurface->format)->BitsPerPixel ) { | |
| 509 Rmask = (SDL_VideoSurface->format)->Rmask; | |
| 510 Gmask = (SDL_VideoSurface->format)->Gmask; | |
| 511 Bmask = (SDL_VideoSurface->format)->Bmask; | |
| 512 } else { | |
| 513 Rmask = Gmask = Bmask = 0; | |
| 514 } | |
| 515 SDL_ShadowSurface = SDL_CreateRGBSurface(SDL_SWSURFACE, | |
| 516 SDL_VideoSurface->w, SDL_VideoSurface->h, | |
| 517 depth, Rmask, Gmask, Bmask, 0); | |
| 518 if ( SDL_ShadowSurface == NULL ) { | |
| 519 return; | |
| 520 } | |
| 521 | |
| 522 /* 8-bit shadow surfaces report that they have exclusive palette */ | |
| 523 if ( SDL_ShadowSurface->format->palette ) { | |
| 524 SDL_ShadowSurface->flags |= SDL_HWPALETTE; | |
| 525 if ( depth == (SDL_VideoSurface->format)->BitsPerPixel ) { | |
| 526 memcpy(SDL_ShadowSurface->format->palette->colors, | |
| 527 SDL_VideoSurface->format->palette->colors, | |
| 528 SDL_VideoSurface->format->palette->ncolors* | |
| 529 sizeof(SDL_Color)); | |
| 530 } else { | |
| 531 SDL_DitherColors( | |
| 532 SDL_ShadowSurface->format->palette->colors, depth); | |
| 533 } | |
| 534 } | |
| 535 | |
| 536 /* If the video surface is resizable, the shadow should say so */ | |
| 537 if ( (SDL_VideoSurface->flags & SDL_RESIZABLE) == SDL_RESIZABLE ) { | |
| 538 SDL_ShadowSurface->flags |= SDL_RESIZABLE; | |
| 539 } | |
| 540 /* If the video surface has no frame, the shadow should say so */ | |
| 541 if ( (SDL_VideoSurface->flags & SDL_NOFRAME) == SDL_NOFRAME ) { | |
| 542 SDL_ShadowSurface->flags |= SDL_NOFRAME; | |
| 543 } | |
| 544 /* If the video surface is fullscreen, the shadow should say so */ | |
| 545 if ( (SDL_VideoSurface->flags & SDL_FULLSCREEN) == SDL_FULLSCREEN ) { | |
| 546 SDL_ShadowSurface->flags |= SDL_FULLSCREEN; | |
| 547 } | |
| 548 /* If the video surface is flippable, the shadow should say so */ | |
| 549 if ( (SDL_VideoSurface->flags & SDL_DOUBLEBUF) == SDL_DOUBLEBUF ) { | |
| 550 SDL_ShadowSurface->flags |= SDL_DOUBLEBUF; | |
| 551 } | |
| 552 return; | |
| 553 } | |
| 554 | |
| 555 /* | |
| 556 * Set the requested video mode, allocating a shadow buffer if necessary. | |
| 557 */ | |
| 558 SDL_Surface * SDL_SetVideoMode (int width, int height, int bpp, Uint32 flags) | |
| 559 { | |
| 560 SDL_VideoDevice *video, *this; | |
| 561 SDL_Surface *prev_mode, *mode; | |
| 562 int video_w; | |
| 563 int video_h; | |
| 564 int video_bpp; | |
| 565 int is_opengl; | |
| 566 SDL_GrabMode saved_grab; | |
| 567 | |
| 568 /* Start up the video driver, if necessary.. | |
| 569 WARNING: This is the only function protected this way! | |
| 570 */ | |
| 571 if ( ! current_video ) { | |
| 572 if ( SDL_Init(SDL_INIT_VIDEO|SDL_INIT_NOPARACHUTE) < 0 ) { | |
| 573 return(NULL); | |
| 574 } | |
| 575 } | |
| 576 this = video = current_video; | |
| 577 | |
| 578 /* Default to the current video bpp */ | |
| 579 if ( bpp == 0 ) { | |
| 580 flags |= SDL_ANYFORMAT; | |
| 581 bpp = SDL_VideoSurface->format->BitsPerPixel; | |
| 582 } | |
| 583 | |
| 584 /* Get a good video mode, the closest one possible */ | |
| 585 video_w = width; | |
| 586 video_h = height; | |
| 587 video_bpp = bpp; | |
| 588 if ( ! SDL_GetVideoMode(&video_w, &video_h, &video_bpp, flags) ) { | |
| 589 return(NULL); | |
| 590 } | |
| 591 | |
| 592 /* Check the requested flags */ | |
| 593 /* There's no palette in > 8 bits-per-pixel mode */ | |
| 594 if ( video_bpp > 8 ) { | |
| 595 flags &= ~SDL_HWPALETTE; | |
| 596 } | |
| 597 #if 0 | |
| 598 if ( (flags&SDL_FULLSCREEN) != SDL_FULLSCREEN ) { | |
| 599 /* There's no windowed double-buffering */ | |
| 600 flags &= ~SDL_DOUBLEBUF; | |
| 601 } | |
| 602 #endif | |
| 603 if ( (flags&SDL_DOUBLEBUF) == SDL_DOUBLEBUF ) { | |
| 604 /* Use hardware surfaces when double-buffering */ | |
| 605 flags |= SDL_HWSURFACE; | |
| 606 } | |
| 607 | |
| 608 is_opengl = ( ( flags & SDL_OPENGL ) == SDL_OPENGL ); | |
| 609 if ( is_opengl ) { | |
| 610 /* These flags are for 2D video modes only */ | |
| 611 flags &= ~(SDL_HWSURFACE|SDL_DOUBLEBUF); | |
| 612 } | |
| 613 | |
|
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614 /* Reset the keyboard here so event callbacks can run */ |
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615 SDL_ResetKeyboard(); |
|
460
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616 SDL_ResetMouse(); |
|
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617 |
| 0 | 618 /* Clean up any previous video mode */ |
| 619 if ( SDL_PublicSurface != NULL ) { | |
| 620 SDL_PublicSurface = NULL; | |
| 621 } | |
| 622 if ( SDL_ShadowSurface != NULL ) { | |
| 623 SDL_Surface *ready_to_go; | |
| 624 ready_to_go = SDL_ShadowSurface; | |
| 625 SDL_ShadowSurface = NULL; | |
| 626 SDL_FreeSurface(ready_to_go); | |
| 627 } | |
| 628 if ( video->physpal ) { | |
| 629 free(video->physpal->colors); | |
| 630 free(video->physpal); | |
| 631 video->physpal = NULL; | |
| 632 } | |
| 633 if( video->gammacols) { | |
| 634 free(video->gammacols); | |
| 635 video->gammacols = NULL; | |
| 636 } | |
| 637 | |
| 638 /* Save the previous grab state and turn off grab for mode switch */ | |
| 639 saved_grab = SDL_WM_GrabInputOff(); | |
| 640 | |
| 641 /* Try to set the video mode, along with offset and clipping */ | |
| 642 prev_mode = SDL_VideoSurface; | |
| 643 SDL_LockCursor(); | |
| 644 SDL_VideoSurface = NULL; /* In case it's freed by driver */ | |
| 645 mode = video->SetVideoMode(this, prev_mode,video_w,video_h,video_bpp,flags); | |
| 646 if ( mode ) { /* Prevent resize events from mode change */ | |
| 647 SDL_PrivateResize(mode->w, mode->h); | |
|
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648 |
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649 /* Sam - If we asked for OpenGL mode, and didn't get it, fail */ |
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650 if ( is_opengl && !(mode->flags & SDL_OPENGL) ) { |
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651 mode = NULL; |
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652 } |
| 0 | 653 } |
| 654 /* | |
| 655 * rcg11292000 | |
| 656 * If you try to set an SDL_OPENGL surface, and fail to find a | |
| 657 * matching visual, then the next call to SDL_SetVideoMode() | |
| 658 * will segfault, since we no longer point to a dummy surface, | |
| 659 * but rather NULL. | |
| 660 * Sam 11/29/00 | |
| 661 * WARNING, we need to make sure that the previous mode hasn't | |
| 662 * already been freed by the video driver. What do we do in | |
| 663 * that case? Should we call SDL_VideoInit() again? | |
| 664 */ | |
| 665 SDL_VideoSurface = (mode != NULL) ? mode : prev_mode; | |
| 666 | |
| 667 if ( (mode != NULL) && (!is_opengl) ) { | |
| 668 /* Sanity check */ | |
| 669 if ( (mode->w < width) || (mode->h < height) ) { | |
| 670 SDL_SetError("Video mode smaller than requested"); | |
| 671 return(NULL); | |
| 672 } | |
| 673 | |
| 674 /* If we have a palettized surface, create a default palette */ | |
| 675 if ( mode->format->palette ) { | |
| 676 SDL_PixelFormat *vf = mode->format; | |
| 677 SDL_DitherColors(vf->palette->colors, vf->BitsPerPixel); | |
| 678 video->SetColors(this, 0, vf->palette->ncolors, | |
| 679 vf->palette->colors); | |
| 680 } | |
| 681 | |
| 682 /* Clear the surface to black */ | |
| 683 video->offset_x = 0; | |
| 684 video->offset_y = 0; | |
| 685 mode->offset = 0; | |
| 686 SDL_SetClipRect(mode, NULL); | |
| 687 SDL_ClearSurface(mode); | |
| 688 | |
| 689 /* Now adjust the offsets to match the desired mode */ | |
| 690 video->offset_x = (mode->w-width)/2; | |
| 691 video->offset_y = (mode->h-height)/2; | |
| 692 mode->offset = video->offset_y*mode->pitch + | |
| 693 video->offset_x*mode->format->BytesPerPixel; | |
| 694 #ifdef DEBUG_VIDEO | |
| 695 fprintf(stderr, | |
| 696 "Requested mode: %dx%dx%d, obtained mode %dx%dx%d (offset %d)\n", | |
| 697 width, height, bpp, | |
| 698 mode->w, mode->h, mode->format->BitsPerPixel, mode->offset); | |
| 699 #endif | |
| 700 mode->w = width; | |
| 701 mode->h = height; | |
| 702 SDL_SetClipRect(mode, NULL); | |
| 703 } | |
| 704 SDL_ResetCursor(); | |
| 705 SDL_UnlockCursor(); | |
| 706 | |
| 707 /* If we failed setting a video mode, return NULL... (Uh Oh!) */ | |
| 708 if ( mode == NULL ) { | |
| 709 return(NULL); | |
| 710 } | |
| 711 | |
| 712 /* If there is no window manager, set the SDL_NOFRAME flag */ | |
| 713 if ( ! video->info.wm_available ) { | |
| 714 mode->flags |= SDL_NOFRAME; | |
| 715 } | |
| 716 | |
| 717 /* Reset the mouse cursor and grab for new video mode */ | |
| 718 SDL_SetCursor(NULL); | |
| 719 if ( video->UpdateMouse ) { | |
| 720 video->UpdateMouse(this); | |
| 721 } | |
| 722 SDL_WM_GrabInput(saved_grab); | |
| 723 SDL_GetRelativeMouseState(NULL, NULL); /* Clear first large delta */ | |
| 724 | |
|
650
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725 #ifdef HAVE_OPENGL |
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726 /* Load GL symbols (before MakeCurrent, where we need glGetString). */ |
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727 if ( flags & (SDL_OPENGL | SDL_OPENGLBLIT) ) { |
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728 #define SDL_PROC(ret,func,params) \ |
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729 do { \ |
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730 video->func = SDL_GL_GetProcAddress(#func); \ |
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731 if ( ! video->func ) { \ |
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732 SDL_SetError("Couldn't load GL function: %s\n", #func); \ |
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733 return(NULL); \ |
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734 } \ |
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735 } while ( 0 ); |
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736 #include "SDL_glfuncs.h" |
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737 #undef SDL_PROC |
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738 } |
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739 #endif |
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740 |
| 0 | 741 /* If we're running OpenGL, make the context current */ |
| 742 if ( (video->screen->flags & SDL_OPENGL) && | |
| 743 video->GL_MakeCurrent ) { | |
| 744 if ( video->GL_MakeCurrent(this) < 0 ) { | |
| 745 return(NULL); | |
| 746 } | |
| 747 } | |
| 748 | |
| 749 /* Set up a fake SDL surface for OpenGL "blitting" */ | |
| 750 if ( (flags & SDL_OPENGLBLIT) == SDL_OPENGLBLIT ) { | |
| 751 /* Load GL functions for performing the texture updates */ | |
| 752 #ifdef HAVE_OPENGL | |
| 753 | |
| 754 /* Create a software surface for blitting */ | |
| 755 #ifdef GL_VERSION_1_2 | |
| 756 /* If the implementation either supports the packed pixels | |
| 757 extension, or implements the core OpenGL 1.2 API, it will | |
| 758 support the GL_UNSIGNED_SHORT_5_6_5 texture format. | |
| 759 */ | |
| 760 if ( (bpp == 16) && | |
|
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761 (strstr((const char *)video->glGetString(GL_EXTENSIONS), "GL_EXT_packed_pixels") || |
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762 (atof((const char *)video->glGetString(GL_VERSION)) >= 1.2f)) |
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763 ) { |
| 0 | 764 video->is_32bit = 0; |
| 765 SDL_VideoSurface = SDL_CreateRGBSurface( | |
| 766 flags, | |
| 767 width, | |
| 768 height, | |
| 769 16, | |
| 770 31 << 11, | |
| 771 63 << 5, | |
| 772 31, | |
| 773 0 | |
| 774 ); | |
| 775 } | |
| 776 else | |
| 777 #endif /* OpenGL 1.2 */ | |
| 778 { | |
| 779 video->is_32bit = 1; | |
| 780 SDL_VideoSurface = SDL_CreateRGBSurface( | |
| 781 flags, | |
| 782 width, | |
| 783 height, | |
| 784 32, | |
| 785 #if SDL_BYTEORDER == SDL_LIL_ENDIAN | |
| 786 0x000000FF, | |
| 787 0x0000FF00, | |
| 788 0x00FF0000, | |
| 789 0xFF000000 | |
| 790 #else | |
| 791 0xFF000000, | |
| 792 0x00FF0000, | |
| 793 0x0000FF00, | |
| 794 0x000000FF | |
| 795 #endif | |
| 796 ); | |
| 797 } | |
| 798 if ( ! SDL_VideoSurface ) { | |
| 799 return(NULL); | |
| 800 } | |
| 801 SDL_VideoSurface->flags = mode->flags | SDL_OPENGLBLIT; | |
| 802 | |
| 803 /* Free the original video mode surface (is this safe?) */ | |
| 804 SDL_FreeSurface(mode); | |
| 805 | |
| 806 /* Set the surface completely opaque & white by default */ | |
| 807 memset( SDL_VideoSurface->pixels, 255, SDL_VideoSurface->h * SDL_VideoSurface->pitch ); | |
| 808 video->glGenTextures( 1, &video->texture ); | |
| 809 video->glBindTexture( GL_TEXTURE_2D, video->texture ); | |
| 810 video->glTexImage2D( | |
| 811 GL_TEXTURE_2D, | |
| 812 0, | |
| 813 video->is_32bit ? GL_RGBA : GL_RGB, | |
| 814 256, | |
| 815 256, | |
| 816 0, | |
| 817 video->is_32bit ? GL_RGBA : GL_RGB, | |
| 818 #ifdef GL_VERSION_1_2 | |
| 819 video->is_32bit ? GL_UNSIGNED_BYTE : GL_UNSIGNED_SHORT_5_6_5, | |
| 820 #else | |
| 821 GL_UNSIGNED_BYTE, | |
| 822 #endif | |
| 823 NULL); | |
| 824 | |
| 825 video->UpdateRects = SDL_GL_UpdateRectsLock; | |
| 826 #else | |
| 827 SDL_SetError("Somebody forgot to #define HAVE_OPENGL"); | |
| 828 return(NULL); | |
| 829 #endif | |
| 830 } | |
| 831 | |
| 832 /* Create a shadow surface if necessary */ | |
| 833 /* There are three conditions under which we create a shadow surface: | |
| 834 1. We need a particular bits-per-pixel that we didn't get. | |
| 835 2. We need a hardware palette and didn't get one. | |
| 836 3. We need a software surface and got a hardware surface. | |
| 837 */ | |
| 838 if ( !(SDL_VideoSurface->flags & SDL_OPENGL) && | |
| 839 ( | |
| 840 ( !(flags&SDL_ANYFORMAT) && | |
| 841 (SDL_VideoSurface->format->BitsPerPixel != bpp)) || | |
| 842 ( (flags&SDL_HWPALETTE) && | |
| 843 !(SDL_VideoSurface->flags&SDL_HWPALETTE)) || | |
| 844 /* If the surface is in hardware, video writes are visible | |
| 845 as soon as they are performed, so we need to buffer them | |
| 846 */ | |
| 847 ( ((flags&SDL_HWSURFACE) == SDL_SWSURFACE) && | |
|
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848 (SDL_VideoSurface->flags&SDL_HWSURFACE)) || |
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849 ( (flags&SDL_DOUBLEBUF) && |
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850 (SDL_VideoSurface->flags&SDL_HWSURFACE) && |
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851 !(SDL_VideoSurface->flags&SDL_DOUBLEBUF)) |
| 0 | 852 ) ) { |
| 853 SDL_CreateShadowSurface(bpp); | |
| 854 if ( SDL_ShadowSurface == NULL ) { | |
| 855 SDL_SetError("Couldn't create shadow surface"); | |
| 856 return(NULL); | |
| 857 } | |
| 858 SDL_PublicSurface = SDL_ShadowSurface; | |
| 859 } else { | |
| 860 SDL_PublicSurface = SDL_VideoSurface; | |
| 861 } | |
| 862 video->info.vfmt = SDL_VideoSurface->format; | |
| 863 | |
| 864 /* We're done! */ | |
| 865 return(SDL_PublicSurface); | |
| 866 } | |
| 867 | |
| 868 /* | |
| 869 * Convert a surface into the video pixel format. | |
| 870 */ | |
| 871 SDL_Surface * SDL_DisplayFormat (SDL_Surface *surface) | |
| 872 { | |
| 873 Uint32 flags; | |
| 874 | |
| 875 if ( ! SDL_PublicSurface ) { | |
| 876 SDL_SetError("No video mode has been set"); | |
| 877 return(NULL); | |
| 878 } | |
| 879 /* Set the flags appropriate for copying to display surface */ | |
|
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880 if (((SDL_PublicSurface->flags&SDL_HWSURFACE) == SDL_HWSURFACE) && current_video->info.blit_hw) |
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881 flags = SDL_HWSURFACE; |
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882 else |
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883 flags = SDL_SWSURFACE; |
| 0 | 884 #ifdef AUTORLE_DISPLAYFORMAT |
| 885 flags |= (surface->flags & (SDL_SRCCOLORKEY|SDL_SRCALPHA)); | |
| 886 flags |= SDL_RLEACCELOK; | |
| 887 #else | |
| 888 flags |= surface->flags & (SDL_SRCCOLORKEY|SDL_SRCALPHA|SDL_RLEACCELOK); | |
| 889 #endif | |
| 890 return(SDL_ConvertSurface(surface, SDL_PublicSurface->format, flags)); | |
| 891 } | |
| 892 | |
| 893 /* | |
| 894 * Convert a surface into a format that's suitable for blitting to | |
| 895 * the screen, but including an alpha channel. | |
| 896 */ | |
| 897 SDL_Surface *SDL_DisplayFormatAlpha(SDL_Surface *surface) | |
| 898 { | |
| 899 SDL_PixelFormat *vf; | |
| 900 SDL_PixelFormat *format; | |
| 901 SDL_Surface *converted; | |
| 902 Uint32 flags; | |
| 903 /* default to ARGB8888 */ | |
| 904 Uint32 amask = 0xff000000; | |
| 905 Uint32 rmask = 0x00ff0000; | |
| 906 Uint32 gmask = 0x0000ff00; | |
| 907 Uint32 bmask = 0x000000ff; | |
| 908 | |
| 909 if ( ! SDL_PublicSurface ) { | |
| 910 SDL_SetError("No video mode has been set"); | |
| 911 return(NULL); | |
| 912 } | |
| 913 vf = SDL_PublicSurface->format; | |
| 914 | |
| 915 switch(vf->BytesPerPixel) { | |
| 916 case 2: | |
| 917 /* For XGY5[56]5, use, AXGY8888, where {X, Y} = {R, B}. | |
| 918 For anything else (like ARGB4444) it doesn't matter | |
| 919 since we have no special code for it anyway */ | |
| 920 if ( (vf->Rmask == 0x1f) && | |
| 921 (vf->Bmask == 0xf800 || vf->Bmask == 0x7c00)) { | |
| 922 rmask = 0xff; | |
| 923 bmask = 0xff0000; | |
| 924 } | |
| 925 break; | |
| 926 | |
| 927 case 3: | |
| 928 case 4: | |
| 929 /* Keep the video format, as long as the high 8 bits are | |
| 930 unused or alpha */ | |
| 931 if ( (vf->Rmask == 0xff) && (vf->Bmask == 0xff0000) ) { | |
| 932 rmask = 0xff; | |
| 933 bmask = 0xff0000; | |
| 934 } | |
| 935 break; | |
| 936 | |
| 937 default: | |
| 938 /* We have no other optimised formats right now. When/if a new | |
| 939 optimised alpha format is written, add the converter here */ | |
| 940 break; | |
| 941 } | |
| 942 format = SDL_AllocFormat(32, rmask, gmask, bmask, amask); | |
| 943 flags = SDL_PublicSurface->flags & SDL_HWSURFACE; | |
| 944 flags |= surface->flags & (SDL_SRCALPHA | SDL_RLEACCELOK); | |
| 945 converted = SDL_ConvertSurface(surface, format, flags); | |
| 946 SDL_FreeFormat(format); | |
| 947 return(converted); | |
| 948 } | |
| 949 | |
| 950 /* | |
| 951 * Update a specific portion of the physical screen | |
| 952 */ | |
| 953 void SDL_UpdateRect(SDL_Surface *screen, Sint32 x, Sint32 y, Uint32 w, Uint32 h) | |
| 954 { | |
| 955 if ( screen ) { | |
| 956 SDL_Rect rect; | |
| 957 | |
| 958 /* Perform some checking */ | |
| 959 if ( w == 0 ) | |
| 960 w = screen->w; | |
| 961 if ( h == 0 ) | |
| 962 h = screen->h; | |
| 963 if ( (int)(x+w) > screen->w ) | |
| 964 return; | |
| 965 if ( (int)(y+h) > screen->h ) | |
| 966 return; | |
| 967 | |
| 968 /* Fill the rectangle */ | |
| 969 rect.x = x; | |
| 970 rect.y = y; | |
| 971 rect.w = w; | |
| 972 rect.h = h; | |
| 973 SDL_UpdateRects(screen, 1, &rect); | |
| 974 } | |
| 975 } | |
| 976 void SDL_UpdateRects (SDL_Surface *screen, int numrects, SDL_Rect *rects) | |
| 977 { | |
| 978 int i; | |
| 979 SDL_VideoDevice *video = current_video; | |
| 980 SDL_VideoDevice *this = current_video; | |
| 981 | |
| 982 if ( screen == SDL_ShadowSurface ) { | |
| 983 /* Blit the shadow surface using saved mapping */ | |
|
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984 SDL_Palette *pal = screen->format->palette; |
| 0 | 985 SDL_Color *saved_colors = NULL; |
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986 if ( pal && !(SDL_VideoSurface->flags & SDL_HWPALETTE) ) { |
| 0 | 987 /* simulated 8bpp, use correct physical palette */ |
| 988 saved_colors = pal->colors; | |
| 989 if ( video->gammacols ) { | |
| 990 /* gamma-corrected palette */ | |
| 991 pal->colors = video->gammacols; | |
| 992 } else if ( video->physpal ) { | |
| 993 /* physical palette different from logical */ | |
| 994 pal->colors = video->physpal->colors; | |
| 995 } | |
| 996 } | |
| 997 if ( SHOULD_DRAWCURSOR(SDL_cursorstate) ) { | |
| 998 SDL_LockCursor(); | |
| 999 SDL_DrawCursor(SDL_ShadowSurface); | |
| 1000 for ( i=0; i<numrects; ++i ) { | |
| 1001 SDL_LowerBlit(SDL_ShadowSurface, &rects[i], | |
| 1002 SDL_VideoSurface, &rects[i]); | |
| 1003 } | |
| 1004 SDL_EraseCursor(SDL_ShadowSurface); | |
| 1005 SDL_UnlockCursor(); | |
| 1006 } else { | |
| 1007 for ( i=0; i<numrects; ++i ) { | |
| 1008 SDL_LowerBlit(SDL_ShadowSurface, &rects[i], | |
| 1009 SDL_VideoSurface, &rects[i]); | |
| 1010 } | |
| 1011 } | |
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1012 if ( saved_colors ) { |
| 0 | 1013 pal->colors = saved_colors; |
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1014 } |
| 0 | 1015 |
| 1016 /* Fall through to video surface update */ | |
| 1017 screen = SDL_VideoSurface; | |
| 1018 } | |
| 1019 if ( screen == SDL_VideoSurface ) { | |
| 1020 /* Update the video surface */ | |
| 1021 if ( screen->offset ) { | |
| 1022 for ( i=0; i<numrects; ++i ) { | |
| 1023 rects[i].x += video->offset_x; | |
| 1024 rects[i].y += video->offset_y; | |
| 1025 } | |
| 1026 video->UpdateRects(this, numrects, rects); | |
| 1027 for ( i=0; i<numrects; ++i ) { | |
| 1028 rects[i].x -= video->offset_x; | |
| 1029 rects[i].y -= video->offset_y; | |
| 1030 } | |
| 1031 } else { | |
| 1032 video->UpdateRects(this, numrects, rects); | |
| 1033 } | |
| 1034 } | |
| 1035 } | |
| 1036 | |
| 1037 /* | |
| 1038 * Performs hardware double buffering, if possible, or a full update if not. | |
| 1039 */ | |
| 1040 int SDL_Flip(SDL_Surface *screen) | |
| 1041 { | |
| 1042 SDL_VideoDevice *video = current_video; | |
| 1043 /* Copy the shadow surface to the video surface */ | |
| 1044 if ( screen == SDL_ShadowSurface ) { | |
| 1045 SDL_Rect rect; | |
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1046 SDL_Palette *pal = screen->format->palette; |
| 0 | 1047 SDL_Color *saved_colors = NULL; |
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1048 if ( pal && !(SDL_VideoSurface->flags & SDL_HWPALETTE) ) { |
| 0 | 1049 /* simulated 8bpp, use correct physical palette */ |
| 1050 saved_colors = pal->colors; | |
| 1051 if ( video->gammacols ) { | |
| 1052 /* gamma-corrected palette */ | |
| 1053 pal->colors = video->gammacols; | |
| 1054 } else if ( video->physpal ) { | |
| 1055 /* physical palette different from logical */ | |
| 1056 pal->colors = video->physpal->colors; | |
| 1057 } | |
| 1058 } | |
| 1059 | |
| 1060 rect.x = 0; | |
| 1061 rect.y = 0; | |
| 1062 rect.w = screen->w; | |
| 1063 rect.h = screen->h; | |
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1064 if ( SHOULD_DRAWCURSOR(SDL_cursorstate) ) { |
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1065 SDL_LockCursor(); |
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1066 SDL_DrawCursor(SDL_ShadowSurface); |
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1067 SDL_LowerBlit(SDL_ShadowSurface, &rect, |
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1068 SDL_VideoSurface, &rect); |
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1069 SDL_EraseCursor(SDL_ShadowSurface); |
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1070 SDL_UnlockCursor(); |
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1071 } else { |
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1072 SDL_LowerBlit(SDL_ShadowSurface, &rect, |
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1073 SDL_VideoSurface, &rect); |
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1074 } |
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1075 if ( saved_colors ) { |
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1076 pal->colors = saved_colors; |
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1077 } |
| 0 | 1078 |
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1079 /* Fall through to video surface update */ |
| 0 | 1080 screen = SDL_VideoSurface; |
| 1081 } | |
| 1082 if ( (screen->flags & SDL_DOUBLEBUF) == SDL_DOUBLEBUF ) { | |
| 1083 SDL_VideoDevice *this = current_video; | |
| 1084 return(video->FlipHWSurface(this, SDL_VideoSurface)); | |
| 1085 } else { | |
| 1086 SDL_UpdateRect(screen, 0, 0, 0, 0); | |
| 1087 } | |
| 1088 return(0); | |
| 1089 } | |
| 1090 | |
| 1091 static void SetPalette_logical(SDL_Surface *screen, SDL_Color *colors, | |
| 1092 int firstcolor, int ncolors) | |
| 1093 { | |
| 1094 SDL_Palette *pal = screen->format->palette; | |
| 1095 SDL_Palette *vidpal; | |
| 1096 | |
| 1097 if ( colors != (pal->colors + firstcolor) ) { | |
| 1098 memcpy(pal->colors + firstcolor, colors, | |
| 1099 ncolors * sizeof(*colors)); | |
| 1100 } | |
| 1101 | |
| 1102 vidpal = SDL_VideoSurface->format->palette; | |
| 1103 if ( (screen == SDL_ShadowSurface) && vidpal ) { | |
| 1104 /* | |
| 1105 * This is a shadow surface, and the physical | |
| 1106 * framebuffer is also indexed. Propagate the | |
| 1107 * changes to its logical palette so that | |
| 1108 * updates are always identity blits | |
| 1109 */ | |
| 1110 memcpy(vidpal->colors + firstcolor, colors, | |
| 1111 ncolors * sizeof(*colors)); | |
| 1112 } | |
| 1113 SDL_FormatChanged(screen); | |
| 1114 } | |
| 1115 | |
| 1116 static int SetPalette_physical(SDL_Surface *screen, | |
| 1117 SDL_Color *colors, int firstcolor, int ncolors) | |
| 1118 { | |
| 1119 SDL_VideoDevice *video = current_video; | |
| 1120 int gotall = 1; | |
| 1121 | |
| 1122 if ( video->physpal ) { | |
| 1123 /* We need to copy the new colors, since we haven't | |
| 1124 * already done the copy in the logical set above. | |
| 1125 */ | |
| 1126 memcpy(video->physpal->colors + firstcolor, | |
| 1127 colors, ncolors * sizeof(*colors)); | |
| 1128 } | |
| 1129 if ( screen == SDL_ShadowSurface ) { | |
| 1130 if ( SDL_VideoSurface->flags & SDL_HWPALETTE ) { | |
| 1131 /* | |
| 1132 * The real screen is also indexed - set its physical | |
| 1133 * palette. The physical palette does not include the | |
| 1134 * gamma modification, we apply it directly instead, | |
| 1135 * but this only happens if we have hardware palette. | |
| 1136 */ | |
| 1137 screen = SDL_VideoSurface; | |
| 1138 } else { | |
| 1139 /* | |
| 1140 * The video surface is not indexed - invalidate any | |
| 1141 * active shadow-to-video blit mappings. | |
| 1142 */ | |
| 1143 if ( screen->map->dst == SDL_VideoSurface ) { | |
| 1144 SDL_InvalidateMap(screen->map); | |
| 1145 } | |
| 1146 if ( video->gamma ) { | |
| 1147 if( ! video->gammacols ) { | |
| 1148 SDL_Palette *pp = video->physpal; | |
| 1149 if(!pp) | |
| 1150 pp = screen->format->palette; | |
| 1151 video->gammacols = malloc(pp->ncolors | |
| 1152 * sizeof(SDL_Color)); | |
| 1153 SDL_ApplyGamma(video->gamma, | |
| 1154 pp->colors, | |
| 1155 video->gammacols, | |
| 1156 pp->ncolors); | |
| 1157 } else { | |
| 1158 SDL_ApplyGamma(video->gamma, colors, | |
| 1159 video->gammacols | |
| 1160 + firstcolor, | |
| 1161 ncolors); | |
| 1162 } | |
| 1163 } | |
| 1164 SDL_UpdateRect(screen, 0, 0, 0, 0); | |
| 1165 } | |
| 1166 } | |
| 1167 | |
| 1168 if ( screen == SDL_VideoSurface ) { | |
| 1169 SDL_Color gcolors[256]; | |
| 1170 | |
| 1171 if ( video->gamma ) { | |
| 1172 SDL_ApplyGamma(video->gamma, colors, gcolors, ncolors); | |
| 1173 colors = gcolors; | |
| 1174 } | |
| 1175 gotall = video->SetColors(video, firstcolor, ncolors, colors); | |
| 1176 if ( ! gotall ) { | |
| 1177 /* The video flags shouldn't have SDL_HWPALETTE, and | |
| 1178 the video driver is responsible for copying back the | |
| 1179 correct colors into the video surface palette. | |
| 1180 */ | |
| 1181 ; | |
| 1182 } | |
| 1183 SDL_CursorPaletteChanged(); | |
| 1184 } | |
| 1185 return gotall; | |
| 1186 } | |
| 1187 | |
| 1188 /* | |
| 1189 * Set the physical and/or logical colormap of a surface: | |
| 1190 * Only the screen has a physical colormap. It determines what is actually | |
| 1191 * sent to the display. | |
| 1192 * The logical colormap is used to map blits to/from the surface. | |
| 1193 * 'which' is one or both of SDL_LOGPAL, SDL_PHYSPAL | |
| 1194 * | |
| 1195 * Return nonzero if all colours were set as requested, or 0 otherwise. | |
| 1196 */ | |
| 1197 int SDL_SetPalette(SDL_Surface *screen, int which, | |
| 1198 SDL_Color *colors, int firstcolor, int ncolors) | |
| 1199 { | |
| 1200 SDL_Palette *pal; | |
| 1201 int gotall; | |
| 1202 int palsize; | |
| 1203 | |
| 34 | 1204 if ( ! current_video ) { |
| 1205 return 0; | |
| 1206 } | |
| 0 | 1207 if ( screen != SDL_PublicSurface ) { |
| 1208 /* only screens have physical palettes */ | |
| 1209 which &= ~SDL_PHYSPAL; | |
| 1210 } else if( (screen->flags & SDL_HWPALETTE) != SDL_HWPALETTE ) { | |
| 1211 /* hardware palettes required for split colormaps */ | |
| 1212 which |= SDL_PHYSPAL | SDL_LOGPAL; | |
| 1213 } | |
| 1214 | |
| 1215 /* Verify the parameters */ | |
| 1216 pal = screen->format->palette; | |
| 1217 if( !pal ) { | |
| 1218 return 0; /* not a palettized surface */ | |
| 1219 } | |
| 1220 gotall = 1; | |
| 1221 palsize = 1 << screen->format->BitsPerPixel; | |
| 1222 if ( ncolors > (palsize - firstcolor) ) { | |
| 1223 ncolors = (palsize - firstcolor); | |
| 1224 gotall = 0; | |
| 1225 } | |
| 1226 | |
| 1227 if ( which & SDL_LOGPAL ) { | |
| 1228 /* | |
| 1229 * Logical palette change: The actual screen isn't affected, | |
| 1230 * but the internal colormap is altered so that the | |
| 1231 * interpretation of the pixel values (for blits etc) is | |
| 1232 * changed. | |
| 1233 */ | |
| 1234 SetPalette_logical(screen, colors, firstcolor, ncolors); | |
| 1235 } | |
| 1236 if ( which & SDL_PHYSPAL ) { | |
| 1237 SDL_VideoDevice *video = current_video; | |
| 1238 /* | |
| 1239 * Physical palette change: This doesn't affect the | |
| 1240 * program's idea of what the screen looks like, but changes | |
| 1241 * its actual appearance. | |
| 1242 */ | |
| 1243 if(!video) | |
| 1244 return gotall; /* video not yet initialized */ | |
| 1245 if(!video->physpal && !(which & SDL_LOGPAL) ) { | |
| 1246 /* Lazy physical palette allocation */ | |
| 1247 int size; | |
| 1248 SDL_Palette *pp = malloc(sizeof(*pp)); | |
| 1249 current_video->physpal = pp; | |
| 1250 pp->ncolors = pal->ncolors; | |
| 1251 size = pp->ncolors * sizeof(SDL_Color); | |
| 1252 pp->colors = malloc(size); | |
| 1253 memcpy(pp->colors, pal->colors, size); | |
| 1254 } | |
| 1255 if ( ! SetPalette_physical(screen, | |
| 1256 colors, firstcolor, ncolors) ) { | |
| 1257 gotall = 0; | |
| 1258 } | |
| 1259 } | |
| 1260 return gotall; | |
| 1261 } | |
| 1262 | |
| 1263 int SDL_SetColors(SDL_Surface *screen, SDL_Color *colors, int firstcolor, | |
| 1264 int ncolors) | |
| 1265 { | |
| 1266 return SDL_SetPalette(screen, SDL_LOGPAL | SDL_PHYSPAL, | |
| 1267 colors, firstcolor, ncolors); | |
| 1268 } | |
| 1269 | |
| 1270 /* | |
| 1271 * Clean up the video subsystem | |
| 1272 */ | |
| 1273 void SDL_VideoQuit (void) | |
| 1274 { | |
| 1275 SDL_Surface *ready_to_go; | |
| 1276 | |
| 1277 if ( current_video ) { | |
| 1278 SDL_VideoDevice *video = current_video; | |
| 1279 SDL_VideoDevice *this = current_video; | |
| 1280 | |
| 1281 /* Halt event processing before doing anything else */ | |
| 1282 SDL_StopEventLoop(); | |
| 1283 | |
| 1284 /* Clean up allocated window manager items */ | |
| 1285 if ( SDL_PublicSurface ) { | |
| 1286 SDL_PublicSurface = NULL; | |
| 1287 } | |
| 1288 SDL_CursorQuit(); | |
| 1289 | |
| 1290 /* Just in case... */ | |
| 1291 SDL_WM_GrabInputOff(); | |
| 1292 | |
| 1293 /* Clean up the system video */ | |
| 1294 video->VideoQuit(this); | |
| 1295 | |
| 1296 /* Free any lingering surfaces */ | |
| 1297 ready_to_go = SDL_ShadowSurface; | |
| 1298 SDL_ShadowSurface = NULL; | |
| 1299 SDL_FreeSurface(ready_to_go); | |
| 1300 if ( SDL_VideoSurface != NULL ) { | |
| 1301 ready_to_go = SDL_VideoSurface; | |
| 1302 SDL_VideoSurface = NULL; | |
| 1303 SDL_FreeSurface(ready_to_go); | |
| 1304 } | |
| 1305 SDL_PublicSurface = NULL; | |
| 1306 | |
| 1307 /* Clean up miscellaneous memory */ | |
| 1308 if ( video->physpal ) { | |
| 1309 free(video->physpal->colors); | |
| 1310 free(video->physpal); | |
| 1311 video->physpal = NULL; | |
| 1312 } | |
| 1313 if ( video->gammacols ) { | |
| 1314 free(video->gammacols); | |
| 1315 video->gammacols = NULL; | |
| 1316 } | |
| 1317 if ( video->gamma ) { | |
| 1318 free(video->gamma); | |
| 1319 video->gamma = NULL; | |
| 1320 } | |
|
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1321 if ( video->wm_title != NULL ) { |
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1322 free(video->wm_title); |
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1323 video->wm_title = NULL; |
| 0 | 1324 } |
|
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1325 if ( video->wm_icon != NULL ) { |
|
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|
1326 free(video->wm_icon); |
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1327 video->wm_icon = NULL; |
| 0 | 1328 } |
| 1329 | |
| 1330 /* Finish cleaning up video subsystem */ | |
| 1331 video->free(this); | |
| 1332 current_video = NULL; | |
| 1333 } | |
| 1334 return; | |
| 1335 } | |
| 1336 | |
| 1337 /* Load the GL driver library */ | |
| 1338 int SDL_GL_LoadLibrary(const char *path) | |
| 1339 { | |
| 1340 SDL_VideoDevice *video = current_video; | |
| 1341 SDL_VideoDevice *this = current_video; | |
| 1342 int retval; | |
| 1343 | |
| 1344 retval = -1; | |
|
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1345 if ( video == NULL ) { |
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1346 SDL_SetError("Video subsystem has not been initialized"); |
| 0 | 1347 } else { |
|
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1348 if ( video->GL_LoadLibrary ) { |
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1349 retval = video->GL_LoadLibrary(this, path); |
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1350 } else { |
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1351 SDL_SetError("No dynamic GL support in video driver"); |
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1352 } |
| 0 | 1353 } |
| 1354 return(retval); | |
| 1355 } | |
| 1356 | |
| 1357 void *SDL_GL_GetProcAddress(const char* proc) | |
| 1358 { | |
| 1359 SDL_VideoDevice *video = current_video; | |
| 1360 SDL_VideoDevice *this = current_video; | |
| 1361 void *func; | |
| 1362 | |
| 1363 func = NULL; | |
| 1364 if ( video->GL_GetProcAddress ) { | |
| 1365 if ( video->gl_config.driver_loaded ) { | |
| 1366 func = video->GL_GetProcAddress(this, proc); | |
| 1367 } else { | |
| 1368 SDL_SetError("No GL driver has been loaded"); | |
| 1369 } | |
| 1370 } else { | |
| 1371 SDL_SetError("No dynamic GL support in video driver"); | |
| 1372 } | |
| 1373 return func; | |
| 1374 } | |
| 1375 | |
| 1376 /* Set the specified GL attribute for setting up a GL video mode */ | |
| 1377 int SDL_GL_SetAttribute( SDL_GLattr attr, int value ) | |
| 1378 { | |
| 1379 int retval; | |
| 1380 SDL_VideoDevice *video = current_video; | |
| 1381 | |
| 1382 retval = 0; | |
| 1383 switch (attr) { | |
| 1384 case SDL_GL_RED_SIZE: | |
| 1385 video->gl_config.red_size = value; | |
| 1386 break; | |
| 1387 case SDL_GL_GREEN_SIZE: | |
| 1388 video->gl_config.green_size = value; | |
| 1389 break; | |
| 1390 case SDL_GL_BLUE_SIZE: | |
| 1391 video->gl_config.blue_size = value; | |
| 1392 break; | |
| 1393 case SDL_GL_ALPHA_SIZE: | |
| 1394 video->gl_config.alpha_size = value; | |
| 1395 break; | |
| 1396 case SDL_GL_DOUBLEBUFFER: | |
| 1397 video->gl_config.double_buffer = value; | |
| 1398 break; | |
| 1399 case SDL_GL_BUFFER_SIZE: | |
| 1400 video->gl_config.buffer_size = value; | |
| 1401 break; | |
| 1402 case SDL_GL_DEPTH_SIZE: | |
| 1403 video->gl_config.depth_size = value; | |
| 1404 break; | |
| 1405 case SDL_GL_STENCIL_SIZE: | |
| 1406 video->gl_config.stencil_size = value; | |
| 1407 break; | |
|
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|
1408 case SDL_GL_ACCUM_RED_SIZE: |
| 0 | 1409 video->gl_config.accum_red_size = value; |
| 1410 break; | |
|
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1411 case SDL_GL_ACCUM_GREEN_SIZE: |
| 0 | 1412 video->gl_config.accum_green_size = value; |
| 1413 break; | |
|
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1414 case SDL_GL_ACCUM_BLUE_SIZE: |
| 0 | 1415 video->gl_config.accum_blue_size = value; |
| 1416 break; | |
|
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1417 case SDL_GL_ACCUM_ALPHA_SIZE: |
| 0 | 1418 video->gl_config.accum_alpha_size = value; |
| 1419 break; | |
|
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1420 case SDL_GL_STEREO: |
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1421 video->gl_config.stereo = value; |
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1422 break; |
| 0 | 1423 default: |
| 1424 SDL_SetError("Unknown OpenGL attribute"); | |
| 1425 retval = -1; | |
| 1426 break; | |
| 1427 } | |
| 1428 return(retval); | |
| 1429 } | |
| 1430 | |
| 1431 /* Retrieve an attribute value from the windowing system. */ | |
| 1432 int SDL_GL_GetAttribute(SDL_GLattr attr, int* value) | |
| 1433 { | |
| 1434 int retval = -1; | |
| 1435 SDL_VideoDevice* video = current_video; | |
| 1436 SDL_VideoDevice* this = current_video; | |
| 1437 | |
| 1438 if ( video->GL_GetAttribute ) { | |
| 1439 retval = this->GL_GetAttribute(this, attr, value); | |
|
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1440 } else { |
|
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1441 *value = 0; |
|
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1442 SDL_SetError("GL_GetAttribute not supported"); |
| 0 | 1443 } |
| 1444 return retval; | |
| 1445 } | |
| 1446 | |
| 1447 /* Perform a GL buffer swap on the current GL context */ | |
| 1448 void SDL_GL_SwapBuffers(void) | |
| 1449 { | |
| 1450 SDL_VideoDevice *video = current_video; | |
| 1451 SDL_VideoDevice *this = current_video; | |
| 1452 | |
| 1453 if ( video->screen->flags & SDL_OPENGL ) { | |
|
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1454 video->GL_SwapBuffers(this); |
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1455 } else { |
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1456 SDL_SetError("OpenGL video mode has not been set"); |
| 0 | 1457 } |
| 1458 } | |
| 1459 | |
| 1460 /* Update rects with locking */ | |
| 1461 void SDL_GL_UpdateRectsLock(SDL_VideoDevice* this, int numrects, SDL_Rect *rects) | |
| 1462 { | |
| 1463 SDL_GL_Lock(); | |
| 1464 SDL_GL_UpdateRects(numrects, rects); | |
| 1465 SDL_GL_Unlock(); | |
| 1466 } | |
| 1467 | |
| 1468 /* Update rects without state setting and changing (the caller is responsible for it) */ | |
| 1469 void SDL_GL_UpdateRects(int numrects, SDL_Rect *rects) | |
| 1470 { | |
| 1471 #ifdef HAVE_OPENGL | |
| 1472 SDL_VideoDevice *this = current_video; | |
| 1473 SDL_Rect update, tmp; | |
| 1474 int x, y, i; | |
| 1475 | |
| 1476 for ( i = 0; i < numrects; i++ ) | |
| 1477 { | |
| 1478 tmp.y = rects[i].y; | |
| 1479 tmp.h = rects[i].h; | |
| 1480 for ( y = 0; y <= rects[i].h / 256; y++ ) | |
| 1481 { | |
| 1482 tmp.x = rects[i].x; | |
| 1483 tmp.w = rects[i].w; | |
| 1484 for ( x = 0; x <= rects[i].w / 256; x++ ) | |
| 1485 { | |
| 1486 update.x = tmp.x; | |
| 1487 update.y = tmp.y; | |
| 1488 update.w = tmp.w; | |
| 1489 update.h = tmp.h; | |
| 1490 | |
| 1491 if ( update.w > 256 ) | |
| 1492 update.w = 256; | |
| 1493 | |
| 1494 if ( update.h > 256 ) | |
| 1495 update.h = 256; | |
| 1496 | |
| 1497 this->glFlush(); | |
| 1498 this->glTexSubImage2D( | |
| 1499 GL_TEXTURE_2D, | |
| 1500 0, | |
| 1501 0, | |
| 1502 0, | |
| 1503 update.w, | |
| 1504 update.h, | |
| 1505 this->is_32bit? GL_RGBA : GL_RGB, | |
| 1506 #ifdef GL_VERSION_1_2 | |
| 1507 this->is_32bit ? GL_UNSIGNED_BYTE : GL_UNSIGNED_SHORT_5_6_5, | |
| 1508 #else | |
| 1509 GL_UNSIGNED_BYTE, | |
| 1510 #endif | |
| 1511 (Uint8 *)this->screen->pixels + | |
| 1512 this->screen->format->BytesPerPixel * update.x + | |
| 1513 update.y * this->screen->pitch ); | |
| 1514 | |
| 1515 this->glFlush(); | |
| 1516 /* | |
| 1517 * Note the parens around the function name: | |
| 1518 * This is because some OpenGL implementations define glTexCoord etc | |
| 1519 * as macros, and we don't want them expanded here. | |
| 1520 */ | |
| 1521 this->glBegin(GL_TRIANGLE_STRIP); | |
| 1522 (this->glTexCoord2f)( 0.0, 0.0 ); | |
| 1523 (this->glVertex2i)( update.x, update.y ); | |
| 1524 (this->glTexCoord2f)( (float)(update.w / 256.0), 0.0 ); | |
| 1525 (this->glVertex2i)( update.x + update.w, update.y ); | |
| 1526 (this->glTexCoord2f)( 0.0, (float)(update.h / 256.0) ); | |
| 1527 (this->glVertex2i)( update.x, update.y + update.h ); | |
| 1528 (this->glTexCoord2f)( (float)(update.w / 256.0), (float)(update.h / 256.0) ); | |
| 1529 (this->glVertex2i)( update.x + update.w , update.y + update.h ); | |
| 1530 this->glEnd(); | |
| 1531 | |
| 1532 tmp.x += 256; | |
| 1533 tmp.w -= 256; | |
| 1534 } | |
| 1535 tmp.y += 256; | |
| 1536 tmp.h -= 256; | |
| 1537 } | |
| 1538 } | |
| 1539 #endif | |
| 1540 } | |
| 1541 | |
| 1542 /* Lock == save current state */ | |
| 1543 void SDL_GL_Lock() | |
| 1544 { | |
| 1545 #ifdef HAVE_OPENGL | |
| 1546 lock_count--; | |
| 1547 if (lock_count==-1) | |
| 1548 { | |
| 1549 SDL_VideoDevice *this = current_video; | |
| 1550 | |
| 1551 this->glPushAttrib( GL_ALL_ATTRIB_BITS ); /* TODO: narrow range of what is saved */ | |
|
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1552 #ifdef GL_CLIENT_PIXEL_STORE_BIT |
| 0 | 1553 this->glPushClientAttrib( GL_CLIENT_PIXEL_STORE_BIT ); |
|
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1554 #endif |
| 0 | 1555 |
| 1556 this->glEnable(GL_TEXTURE_2D); | |
| 1557 this->glEnable(GL_BLEND); | |
| 1558 this->glDisable(GL_FOG); | |
| 1559 this->glDisable(GL_ALPHA_TEST); | |
| 1560 this->glDisable(GL_DEPTH_TEST); | |
| 1561 this->glDisable(GL_SCISSOR_TEST); | |
| 1562 this->glDisable(GL_STENCIL_TEST); | |
| 1563 this->glDisable(GL_CULL_FACE); | |
| 1564 | |
| 1565 this->glBindTexture( GL_TEXTURE_2D, this->texture ); | |
| 1566 this->glTexEnvf( GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE ); | |
| 1567 this->glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST ); | |
| 1568 this->glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST ); | |
| 1569 this->glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT ); | |
| 1570 this->glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT ); | |
| 1571 | |
| 1572 this->glPixelStorei( GL_UNPACK_ROW_LENGTH, this->screen->pitch / this->screen->format->BytesPerPixel ); | |
| 1573 this->glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA); | |
| 1574 (this->glColor4f)(1.0, 1.0, 1.0, 1.0); /* Solaris workaround */ | |
| 1575 | |
| 1576 this->glViewport(0, 0, this->screen->w, this->screen->h); | |
| 1577 this->glMatrixMode(GL_PROJECTION); | |
| 1578 this->glPushMatrix(); | |
| 1579 this->glLoadIdentity(); | |
| 1580 | |
| 1581 this->glOrtho(0.0, (GLdouble) this->screen->w, (GLdouble) this->screen->h, 0.0, 0.0, 1.0); | |
| 1582 | |
| 1583 this->glMatrixMode(GL_MODELVIEW); | |
| 1584 this->glPushMatrix(); | |
| 1585 this->glLoadIdentity(); | |
| 1586 } | |
| 1587 #endif | |
| 1588 } | |
| 1589 | |
| 1590 /* Unlock == restore saved state */ | |
| 1591 void SDL_GL_Unlock() | |
| 1592 { | |
| 1593 #ifdef HAVE_OPENGL | |
| 1594 lock_count++; | |
| 1595 if (lock_count==0) | |
| 1596 { | |
| 1597 SDL_VideoDevice *this = current_video; | |
| 1598 | |
| 1599 this->glPopMatrix(); | |
| 1600 this->glMatrixMode(GL_PROJECTION); | |
| 1601 this->glPopMatrix(); | |
| 1602 | |
| 1603 this->glPopClientAttrib(); | |
| 1604 this->glPopAttrib(); | |
| 1605 } | |
| 1606 #endif | |
| 1607 } | |
| 1608 | |
| 1609 /* | |
| 1610 * Sets/Gets the title and icon text of the display window, if any. | |
| 1611 */ | |
| 1612 void SDL_WM_SetCaption (const char *title, const char *icon) | |
| 1613 { | |
| 1614 SDL_VideoDevice *video = current_video; | |
| 1615 SDL_VideoDevice *this = current_video; | |
| 1616 | |
|
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1617 if ( video ) { |
|
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1618 if ( title ) { |
|
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1619 if ( video->wm_title ) { |
|
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1620 free(video->wm_title); |
|
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1621 } |
|
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1622 video->wm_title = (char *)malloc(strlen(title)+1); |
|
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1623 if ( video->wm_title != NULL ) { |
|
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|
1624 strcpy(video->wm_title, title); |
|
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|
1625 } |
| 0 | 1626 } |
|
58
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|
1627 if ( icon ) { |
|
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|
1628 if ( video->wm_icon ) { |
|
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|
1629 free(video->wm_icon); |
|
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|
1630 } |
|
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|
1631 video->wm_icon = (char *)malloc(strlen(icon)+1); |
|
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|
1632 if ( video->wm_icon != NULL ) { |
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1633 strcpy(video->wm_icon, icon); |
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1634 } |
| 0 | 1635 } |
|
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1636 if ( (title || icon) && (video->SetCaption != NULL) ) { |
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1637 video->SetCaption(this, video->wm_title,video->wm_icon); |
| 0 | 1638 } |
| 1639 } | |
| 1640 } | |
| 1641 void SDL_WM_GetCaption (char **title, char **icon) | |
| 1642 { | |
|
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1643 SDL_VideoDevice *video = current_video; |
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1644 |
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1645 if ( video ) { |
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1646 if ( title ) { |
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1647 *title = video->wm_title; |
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1648 } |
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1649 if ( icon ) { |
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1650 *icon = video->wm_icon; |
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1651 } |
| 0 | 1652 } |
| 1653 } | |
| 1654 | |
|
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1655 /* Utility function used by SDL_WM_SetIcon(); |
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1656 * flags & 1 for color key, flags & 2 for alpha channel. */ |
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1657 static void CreateMaskFromColorKeyOrAlpha(SDL_Surface *icon, Uint8 *mask, int flags) |
| 0 | 1658 { |
| 1659 int x, y; | |
| 1660 Uint32 colorkey; | |
| 1661 #define SET_MASKBIT(icon, x, y, mask) \ | |
| 1662 mask[(y*((icon->w+7)/8))+(x/8)] &= ~(0x01<<(7-(x%8))) | |
| 1663 | |
| 1664 colorkey = icon->format->colorkey; | |
| 1665 switch (icon->format->BytesPerPixel) { | |
| 1666 case 1: { Uint8 *pixels; | |
| 1667 for ( y=0; y<icon->h; ++y ) { | |
| 1668 pixels = (Uint8 *)icon->pixels + y*icon->pitch; | |
| 1669 for ( x=0; x<icon->w; ++x ) { | |
| 1670 if ( *pixels++ == colorkey ) { | |
| 1671 SET_MASKBIT(icon, x, y, mask); | |
| 1672 } | |
| 1673 } | |
| 1674 } | |
| 1675 } | |
| 1676 break; | |
| 1677 | |
| 1678 case 2: { Uint16 *pixels; | |
| 1679 for ( y=0; y<icon->h; ++y ) { | |
| 1680 pixels = (Uint16 *)icon->pixels + | |
| 1681 y*icon->pitch/2; | |
| 1682 for ( x=0; x<icon->w; ++x ) { | |
|
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1683 if ( (flags & 1) && *pixels == colorkey ) { |
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1684 SET_MASKBIT(icon, x, y, mask); |
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1685 } else if((flags & 2) && (*pixels & icon->format->Amask) == 0) { |
| 0 | 1686 SET_MASKBIT(icon, x, y, mask); |
| 1687 } | |
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1688 pixels++; |
| 0 | 1689 } |
| 1690 } | |
| 1691 } | |
| 1692 break; | |
| 1693 | |
| 1694 case 4: { Uint32 *pixels; | |
| 1695 for ( y=0; y<icon->h; ++y ) { | |
| 1696 pixels = (Uint32 *)icon->pixels + | |
| 1697 y*icon->pitch/4; | |
| 1698 for ( x=0; x<icon->w; ++x ) { | |
|
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1699 if ( (flags & 1) && *pixels == colorkey ) { |
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1700 SET_MASKBIT(icon, x, y, mask); |
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1701 } else if((flags & 2) && (*pixels & icon->format->Amask) == 0) { |
| 0 | 1702 SET_MASKBIT(icon, x, y, mask); |
| 1703 } | |
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1704 pixels++; |
| 0 | 1705 } |
| 1706 } | |
| 1707 } | |
| 1708 break; | |
| 1709 } | |
| 1710 } | |
| 1711 | |
| 1712 /* | |
| 1713 * Sets the window manager icon for the display window. | |
| 1714 */ | |
| 1715 void SDL_WM_SetIcon (SDL_Surface *icon, Uint8 *mask) | |
| 1716 { | |
| 1717 SDL_VideoDevice *video = current_video; | |
| 1718 SDL_VideoDevice *this = current_video; | |
| 1719 | |
| 1720 if ( icon && video->SetIcon ) { | |
| 1721 /* Generate a mask if necessary, and create the icon! */ | |
| 1722 if ( mask == NULL ) { | |
| 1723 int mask_len = icon->h*(icon->w+7)/8; | |
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1724 int flags = 0; |
| 0 | 1725 mask = (Uint8 *)malloc(mask_len); |
| 1726 if ( mask == NULL ) { | |
| 1727 return; | |
| 1728 } | |
| 1729 memset(mask, ~0, mask_len); | |
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1730 if ( icon->flags & SDL_SRCCOLORKEY ) flags |= 1; |
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1731 if ( icon->flags & SDL_SRCALPHA ) flags |= 2; |
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1732 if( flags ) { |
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1733 CreateMaskFromColorKeyOrAlpha(icon, mask, flags); |
| 0 | 1734 } |
| 1735 video->SetIcon(video, icon, mask); | |
| 1736 free(mask); | |
| 1737 } else { | |
| 1738 video->SetIcon(this, icon, mask); | |
| 1739 } | |
| 1740 } | |
| 1741 } | |
| 1742 | |
| 1743 /* | |
| 1744 * Grab or ungrab the keyboard and mouse input. | |
| 1745 * This function returns the final grab mode after calling the | |
| 1746 * driver dependent function. | |
| 1747 */ | |
| 1748 static SDL_GrabMode SDL_WM_GrabInputRaw(SDL_GrabMode mode) | |
| 1749 { | |
| 1750 SDL_VideoDevice *video = current_video; | |
| 1751 SDL_VideoDevice *this = current_video; | |
| 1752 | |
| 1753 /* Only do something if we have support for grabs */ | |
| 1754 if ( video->GrabInput == NULL ) { | |
| 1755 return(video->input_grab); | |
| 1756 } | |
| 1757 | |
| 1758 /* If the final grab mode if off, only then do we actually grab */ | |
| 1759 #ifdef DEBUG_GRAB | |
| 1760 printf("SDL_WM_GrabInputRaw(%d) ... ", mode); | |
| 1761 #endif | |
| 1762 if ( mode == SDL_GRAB_OFF ) { | |
| 1763 if ( video->input_grab != SDL_GRAB_OFF ) { | |
| 1764 mode = video->GrabInput(this, mode); | |
| 1765 } | |
| 1766 } else { | |
| 1767 if ( video->input_grab == SDL_GRAB_OFF ) { | |
| 1768 mode = video->GrabInput(this, mode); | |
| 1769 } | |
| 1770 } | |
| 1771 if ( mode != video->input_grab ) { | |
| 1772 video->input_grab = mode; | |
| 1773 if ( video->CheckMouseMode ) { | |
| 1774 video->CheckMouseMode(this); | |
| 1775 } | |
| 1776 } | |
| 1777 #ifdef DEBUG_GRAB | |
| 1778 printf("Final mode %d\n", video->input_grab); | |
| 1779 #endif | |
| 1780 | |
| 1781 /* Return the final grab state */ | |
| 1782 if ( mode >= SDL_GRAB_FULLSCREEN ) { | |
| 1783 mode -= SDL_GRAB_FULLSCREEN; | |
| 1784 } | |
| 1785 return(mode); | |
| 1786 } | |
| 1787 SDL_GrabMode SDL_WM_GrabInput(SDL_GrabMode mode) | |
| 1788 { | |
| 1789 SDL_VideoDevice *video = current_video; | |
| 1790 | |
|
11
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1791 /* If the video isn't initialized yet, we can't do anything */ |
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1792 if ( ! video ) { |
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1793 return SDL_GRAB_OFF; |
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1794 } |
| 0 | 1795 |
| 1796 /* Return the current mode on query */ | |
| 1797 if ( mode == SDL_GRAB_QUERY ) { | |
| 1798 mode = video->input_grab; | |
| 1799 if ( mode >= SDL_GRAB_FULLSCREEN ) { | |
| 1800 mode -= SDL_GRAB_FULLSCREEN; | |
| 1801 } | |
| 1802 return(mode); | |
| 1803 } | |
| 1804 | |
| 1805 #ifdef DEBUG_GRAB | |
| 1806 printf("SDL_WM_GrabInput(%d) ... ", mode); | |
| 1807 #endif | |
| 1808 /* If the video surface is fullscreen, we always grab */ | |
| 1809 if ( mode >= SDL_GRAB_FULLSCREEN ) { | |
| 1810 mode -= SDL_GRAB_FULLSCREEN; | |
| 1811 } | |
| 1812 if ( SDL_VideoSurface && (SDL_VideoSurface->flags & SDL_FULLSCREEN) ) { | |
| 1813 mode += SDL_GRAB_FULLSCREEN; | |
| 1814 } | |
| 1815 return(SDL_WM_GrabInputRaw(mode)); | |
| 1816 } | |
| 1817 static SDL_GrabMode SDL_WM_GrabInputOff(void) | |
| 1818 { | |
| 1819 SDL_GrabMode mode; | |
| 1820 | |
| 1821 /* First query the current grab state */ | |
| 1822 mode = SDL_WM_GrabInput(SDL_GRAB_QUERY); | |
| 1823 | |
| 1824 /* Now explicitly turn off input grab */ | |
| 1825 SDL_WM_GrabInputRaw(SDL_GRAB_OFF); | |
| 1826 | |
| 1827 /* Return the old state */ | |
| 1828 return(mode); | |
| 1829 } | |
| 1830 | |
| 1831 /* | |
| 1832 * Iconify the window in window managed environments. | |
| 1833 * A successful iconification will result in an SDL_APPACTIVE loss event. | |
| 1834 */ | |
| 1835 int SDL_WM_IconifyWindow(void) | |
| 1836 { | |
| 1837 SDL_VideoDevice *video = current_video; | |
| 1838 SDL_VideoDevice *this = current_video; | |
| 1839 int retval; | |
| 1840 | |
| 1841 retval = 0; | |
| 1842 if ( video->IconifyWindow ) { | |
| 1843 retval = video->IconifyWindow(this); | |
| 1844 } | |
| 1845 return(retval); | |
| 1846 } | |
| 1847 | |
| 1848 /* | |
| 1849 * Toggle fullscreen mode | |
| 1850 */ | |
| 1851 int SDL_WM_ToggleFullScreen(SDL_Surface *surface) | |
| 1852 { | |
| 1853 SDL_VideoDevice *video = current_video; | |
| 1854 SDL_VideoDevice *this = current_video; | |
| 1855 int toggled; | |
| 1856 | |
| 1857 toggled = 0; | |
| 1858 if ( SDL_PublicSurface && (surface == SDL_PublicSurface) && | |
| 1859 video->ToggleFullScreen ) { | |
| 1860 if ( surface->flags & SDL_FULLSCREEN ) { | |
| 1861 toggled = video->ToggleFullScreen(this, 0); | |
| 1862 if ( toggled ) { | |
| 1863 SDL_VideoSurface->flags &= ~SDL_FULLSCREEN; | |
| 1864 SDL_PublicSurface->flags &= ~SDL_FULLSCREEN; | |
| 1865 } | |
| 1866 } else { | |
| 1867 toggled = video->ToggleFullScreen(this, 1); | |
| 1868 if ( toggled ) { | |
| 1869 SDL_VideoSurface->flags |= SDL_FULLSCREEN; | |
| 1870 SDL_PublicSurface->flags |= SDL_FULLSCREEN; | |
| 1871 } | |
| 1872 } | |
| 1873 /* Double-check the grab state inside SDL_WM_GrabInput() */ | |
| 1874 if ( toggled ) { | |
| 1875 SDL_WM_GrabInput(video->input_grab); | |
| 1876 } | |
| 1877 } | |
| 1878 return(toggled); | |
| 1879 } | |
| 1880 | |
| 1881 /* | |
| 1882 * Get some platform dependent window manager information | |
| 1883 */ | |
| 1884 int SDL_GetWMInfo (SDL_SysWMinfo *info) | |
| 1885 { | |
| 1886 SDL_VideoDevice *video = current_video; | |
| 1887 SDL_VideoDevice *this = current_video; | |
| 1888 | |
| 1889 if ( video && video->GetWMInfo ) { | |
| 1890 return(video->GetWMInfo(this, info)); | |
| 1891 } else { | |
| 1892 return(0); | |
| 1893 } | |
| 1894 } |