Mercurial > sdl-ios-xcode
annotate src/video/SDL_video.c @ 853:dddfc37e1f65
Don't allow video modes larger than the maximum size
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Tue, 24 Feb 2004 07:42:19 +0000 |
| parents | b8d311d90021 |
| children | 50f5a29c6a17 |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 2 SDL - Simple DirectMedia Layer | |
|
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3 Copyright (C) 1997-2004 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 | |
|
47
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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; |
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236 video->gl_config.multisamplebuffers = 0; |
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237 video->gl_config.multisamplesamples = 0; |
| 0 | 238 |
| 239 /* Initialize the video subsystem */ | |
| 240 memset(&vformat, 0, sizeof(vformat)); | |
| 241 if ( video->VideoInit(video, &vformat) < 0 ) { | |
| 242 SDL_VideoQuit(); | |
| 243 return(-1); | |
| 244 } | |
| 245 | |
| 246 /* Create a zero sized video surface of the appropriate format */ | |
| 247 video_flags = SDL_SWSURFACE; | |
| 248 SDL_VideoSurface = SDL_CreateRGBSurface(video_flags, 0, 0, | |
| 249 vformat.BitsPerPixel, | |
| 250 vformat.Rmask, vformat.Gmask, vformat.Bmask, 0); | |
| 251 if ( SDL_VideoSurface == NULL ) { | |
| 252 SDL_VideoQuit(); | |
| 253 return(-1); | |
| 254 } | |
| 255 SDL_PublicSurface = NULL; /* Until SDL_SetVideoMode() */ | |
| 256 | |
| 257 #if 0 /* Don't change the current palette - may be used by other programs. | |
| 258 * The application can't do anything with the display surface until | |
| 259 * a video mode has been set anyway. :) | |
| 260 */ | |
| 261 /* If we have a palettized surface, create a default palette */ | |
| 262 if ( SDL_VideoSurface->format->palette ) { | |
|
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263 SDL_PixelFormat *vf = SDL_VideoSurface->format; |
| 0 | 264 SDL_DitherColors(vf->palette->colors, vf->BitsPerPixel); |
| 265 video->SetColors(video, | |
| 266 0, vf->palette->ncolors, vf->palette->colors); | |
| 267 } | |
| 268 #endif | |
| 269 video->info.vfmt = SDL_VideoSurface->format; | |
| 270 | |
| 271 /* Start the event loop */ | |
| 272 if ( SDL_StartEventLoop(flags) < 0 ) { | |
| 273 SDL_VideoQuit(); | |
| 274 return(-1); | |
| 275 } | |
| 276 SDL_CursorInit(flags & SDL_INIT_EVENTTHREAD); | |
| 277 | |
| 278 /* We're ready to go! */ | |
| 279 return(0); | |
| 280 } | |
| 281 | |
| 282 char *SDL_VideoDriverName(char *namebuf, int maxlen) | |
| 283 { | |
| 284 if ( current_video != NULL ) { | |
| 285 strncpy(namebuf, current_video->name, maxlen-1); | |
| 286 namebuf[maxlen-1] = '\0'; | |
| 287 return(namebuf); | |
| 288 } | |
| 289 return(NULL); | |
| 290 } | |
| 291 | |
| 292 /* | |
| 293 * Get the current display surface | |
| 294 */ | |
| 295 SDL_Surface *SDL_GetVideoSurface(void) | |
| 296 { | |
| 297 SDL_Surface *visible; | |
| 298 | |
| 299 visible = NULL; | |
| 300 if ( current_video ) { | |
| 301 visible = current_video->visible; | |
| 302 } | |
| 303 return(visible); | |
| 304 } | |
| 305 | |
| 306 /* | |
| 307 * Get the current information about the video hardware | |
| 308 */ | |
| 309 const SDL_VideoInfo *SDL_GetVideoInfo(void) | |
| 310 { | |
| 311 const SDL_VideoInfo *info; | |
| 312 | |
| 313 info = NULL; | |
| 314 if ( current_video ) { | |
| 315 info = ¤t_video->info; | |
| 316 } | |
| 317 return(info); | |
| 318 } | |
| 319 | |
| 320 /* | |
| 321 * Return a pointer to an array of available screen dimensions for the | |
| 322 * given format, sorted largest to smallest. Returns NULL if there are | |
| 323 * no dimensions available for a particular format, or (SDL_Rect **)-1 | |
| 324 * if any dimension is okay for the given format. If 'format' is NULL, | |
| 325 * the mode list will be for the format given by SDL_GetVideoInfo()->vfmt | |
| 326 */ | |
| 327 SDL_Rect ** SDL_ListModes (SDL_PixelFormat *format, Uint32 flags) | |
| 328 { | |
| 329 SDL_VideoDevice *video = current_video; | |
| 330 SDL_VideoDevice *this = current_video; | |
| 331 SDL_Rect **modes; | |
| 332 | |
| 333 modes = NULL; | |
| 334 if ( SDL_VideoSurface ) { | |
| 335 if ( format == NULL ) { | |
| 336 format = SDL_VideoSurface->format; | |
| 337 } | |
| 338 modes = video->ListModes(this, format, flags); | |
| 339 } | |
| 340 return(modes); | |
| 341 } | |
| 342 | |
| 343 /* | |
| 344 * Check to see if a particular video mode is supported. | |
| 345 * It returns 0 if the requested mode is not supported under any bit depth, | |
| 346 * or returns the bits-per-pixel of the closest available mode with the | |
| 347 * given width and height. If this bits-per-pixel is different from the | |
| 348 * one used when setting the video mode, SDL_SetVideoMode() will succeed, | |
| 349 * but will emulate the requested bits-per-pixel with a shadow surface. | |
| 350 */ | |
| 351 static Uint8 SDL_closest_depths[4][8] = { | |
| 352 /* 8 bit closest depth ordering */ | |
| 353 { 0, 8, 16, 15, 32, 24, 0, 0 }, | |
| 354 /* 15,16 bit closest depth ordering */ | |
| 355 { 0, 16, 15, 32, 24, 8, 0, 0 }, | |
| 356 /* 24 bit closest depth ordering */ | |
| 357 { 0, 24, 32, 16, 15, 8, 0, 0 }, | |
| 358 /* 32 bit closest depth ordering */ | |
| 359 { 0, 32, 16, 15, 24, 8, 0, 0 } | |
| 360 }; | |
| 361 | |
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362 |
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363 #ifdef macintosh /* MPW optimization bug? */ |
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364 #define NEGATIVE_ONE 0xFFFFFFFF |
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365 #else |
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366 #define NEGATIVE_ONE -1 |
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367 #endif |
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368 |
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369 int SDL_VideoModeOK (int width, int height, int bpp, Uint32 flags) |
| 0 | 370 { |
| 371 int table, b, i; | |
| 372 int supported; | |
| 373 SDL_PixelFormat format; | |
| 374 SDL_Rect **sizes; | |
| 375 | |
| 376 /* Currently 1 and 4 bpp are not supported */ | |
| 377 if ( bpp < 8 || bpp > 32 ) { | |
| 378 return(0); | |
| 379 } | |
|
456
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Fixed crash with invalid bpp in SDL_SetVideoMode()
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|
380 if ( (width <= 0) || (height <= 0) ) { |
| 0 | 381 return(0); |
| 382 } | |
| 383 | |
| 384 /* Search through the list valid of modes */ | |
| 385 memset(&format, 0, sizeof(format)); | |
| 386 supported = 0; | |
| 387 table = ((bpp+7)/8)-1; | |
| 388 SDL_closest_depths[table][0] = bpp; | |
| 389 SDL_closest_depths[table][7] = 0; | |
| 390 for ( b = 0; !supported && SDL_closest_depths[table][b]; ++b ) { | |
| 391 format.BitsPerPixel = SDL_closest_depths[table][b]; | |
| 392 sizes = SDL_ListModes(&format, flags); | |
| 393 if ( sizes == (SDL_Rect **)0 ) { | |
| 394 /* No sizes supported at this bit-depth */ | |
| 395 continue; | |
| 396 } else | |
|
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Don't allow video modes larger than the maximum size
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397 if (sizes == (SDL_Rect **)NEGATIVE_ONE) { |
| 0 | 398 /* Any size supported at this bit-depth */ |
| 399 supported = 1; | |
| 400 continue; | |
|
853
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|
401 } else if (current_video->handles_any_size) { |
|
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402 /* Driver can center a smaller surface to simulate fullscreen */ |
|
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|
403 for ( i=0; sizes[i]; ++i ) { |
|
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|
404 if ((sizes[i]->w >= width) && (sizes[i]->h >= height)) { |
|
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Don't allow video modes larger than the maximum size
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|
405 supported = 1; /* this mode can fit the centered window. */ |
|
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parents:
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406 break; |
|
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Don't allow video modes larger than the maximum size
Sam Lantinga <slouken@libsdl.org>
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407 } |
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Sam Lantinga <slouken@libsdl.org>
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408 } |
| 0 | 409 } else |
| 410 for ( i=0; sizes[i]; ++i ) { | |
| 411 if ((sizes[i]->w == width) && (sizes[i]->h == height)) { | |
| 412 supported = 1; | |
| 413 break; | |
| 414 } | |
| 415 } | |
| 416 } | |
| 417 if ( supported ) { | |
| 418 --b; | |
| 419 return(SDL_closest_depths[table][b]); | |
| 420 } else { | |
| 421 return(0); | |
| 422 } | |
| 423 } | |
| 424 | |
| 425 /* | |
| 426 * Get the closest non-emulated video mode to the one requested | |
| 427 */ | |
| 428 static int SDL_GetVideoMode (int *w, int *h, int *BitsPerPixel, Uint32 flags) | |
| 429 { | |
| 430 int table, b, i; | |
| 431 int supported; | |
| 432 int native_bpp; | |
| 433 SDL_PixelFormat format; | |
| 434 SDL_Rect **sizes; | |
| 435 | |
|
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Fixed crash with invalid bpp in SDL_SetVideoMode()
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diff
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436 /* Check parameters */ |
|
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|
437 if ( *BitsPerPixel < 8 || *BitsPerPixel > 32 ) { |
|
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Sam Lantinga <slouken@libsdl.org>
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438 SDL_SetError("Invalid bits per pixel (range is {8...32})"); |
|
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Sam Lantinga <slouken@libsdl.org>
parents:
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diff
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|
439 return(0); |
|
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Fixed crash with invalid bpp in SDL_SetVideoMode()
Sam Lantinga <slouken@libsdl.org>
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diff
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440 } |
|
430
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Make sure width and height passed to SDL_GetVideoMode() are sane.
Ryan C. Gordon <icculus@icculus.org>
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423
diff
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|
441 if ((*w <= 0) || (*h <= 0)) { |
|
456
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Fixed crash with invalid bpp in SDL_SetVideoMode()
Sam Lantinga <slouken@libsdl.org>
parents:
450
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|
442 SDL_SetError("Invalid width or height"); |
|
430
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Make sure width and height passed to SDL_GetVideoMode() are sane.
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443 return(0); |
|
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Make sure width and height passed to SDL_GetVideoMode() are sane.
Ryan C. Gordon <icculus@icculus.org>
parents:
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|
444 } |
|
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Make sure width and height passed to SDL_GetVideoMode() are sane.
Ryan C. Gordon <icculus@icculus.org>
parents:
423
diff
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|
445 |
| 0 | 446 /* Try the original video mode, get the closest depth */ |
| 447 native_bpp = SDL_VideoModeOK(*w, *h, *BitsPerPixel, flags); | |
| 448 if ( native_bpp == *BitsPerPixel ) { | |
| 449 return(1); | |
| 450 } | |
| 451 if ( native_bpp > 0 ) { | |
| 452 *BitsPerPixel = native_bpp; | |
| 453 return(1); | |
| 454 } | |
| 455 | |
| 456 /* No exact size match at any depth, look for closest match */ | |
| 457 memset(&format, 0, sizeof(format)); | |
| 458 supported = 0; | |
| 459 table = ((*BitsPerPixel+7)/8)-1; | |
| 460 SDL_closest_depths[table][0] = *BitsPerPixel; | |
| 461 SDL_closest_depths[table][7] = SDL_VideoSurface->format->BitsPerPixel; | |
| 462 for ( b = 0; !supported && SDL_closest_depths[table][b]; ++b ) { | |
| 463 format.BitsPerPixel = SDL_closest_depths[table][b]; | |
| 464 sizes = SDL_ListModes(&format, flags); | |
| 465 if ( sizes == (SDL_Rect **)0 ) { | |
| 466 /* No sizes supported at this bit-depth */ | |
| 467 continue; | |
| 468 } | |
| 469 for ( i=0; sizes[i]; ++i ) { | |
| 470 if ((sizes[i]->w < *w) || (sizes[i]->h < *h)) { | |
| 471 if ( i > 0 ) { | |
| 472 --i; | |
| 473 *w = sizes[i]->w; | |
| 474 *h = sizes[i]->h; | |
| 475 *BitsPerPixel = SDL_closest_depths[table][b]; | |
| 476 supported = 1; | |
| 477 } else { | |
| 478 /* Largest mode too small... */; | |
| 479 } | |
| 480 break; | |
| 481 } | |
| 482 } | |
| 483 if ( (i > 0) && ! sizes[i] ) { | |
| 484 /* The smallest mode was larger than requested, OK */ | |
| 485 --i; | |
| 486 *w = sizes[i]->w; | |
| 487 *h = sizes[i]->h; | |
| 488 *BitsPerPixel = SDL_closest_depths[table][b]; | |
| 489 supported = 1; | |
| 490 } | |
| 491 } | |
| 492 if ( ! supported ) { | |
| 493 SDL_SetError("No video mode large enough for %dx%d", *w, *h); | |
| 494 } | |
| 495 return(supported); | |
| 496 } | |
| 497 | |
| 498 /* This should probably go somewhere else -- like SDL_surface.c */ | |
| 499 static void SDL_ClearSurface(SDL_Surface *surface) | |
| 500 { | |
| 501 Uint32 black; | |
| 502 | |
| 503 black = SDL_MapRGB(surface->format, 0, 0, 0); | |
| 504 SDL_FillRect(surface, NULL, black); | |
| 505 if ((surface->flags&SDL_HWSURFACE) && (surface->flags&SDL_DOUBLEBUF)) { | |
| 506 SDL_Flip(surface); | |
| 507 SDL_FillRect(surface, NULL, black); | |
| 508 } | |
| 509 SDL_Flip(surface); | |
| 510 } | |
| 511 | |
| 512 /* | |
| 513 * Create a shadow surface suitable for fooling the app. :-) | |
| 514 */ | |
| 515 static void SDL_CreateShadowSurface(int depth) | |
| 516 { | |
| 517 Uint32 Rmask, Gmask, Bmask; | |
| 518 | |
| 519 /* Allocate the shadow surface */ | |
| 520 if ( depth == (SDL_VideoSurface->format)->BitsPerPixel ) { | |
| 521 Rmask = (SDL_VideoSurface->format)->Rmask; | |
| 522 Gmask = (SDL_VideoSurface->format)->Gmask; | |
| 523 Bmask = (SDL_VideoSurface->format)->Bmask; | |
| 524 } else { | |
| 525 Rmask = Gmask = Bmask = 0; | |
| 526 } | |
| 527 SDL_ShadowSurface = SDL_CreateRGBSurface(SDL_SWSURFACE, | |
| 528 SDL_VideoSurface->w, SDL_VideoSurface->h, | |
| 529 depth, Rmask, Gmask, Bmask, 0); | |
| 530 if ( SDL_ShadowSurface == NULL ) { | |
| 531 return; | |
| 532 } | |
| 533 | |
| 534 /* 8-bit shadow surfaces report that they have exclusive palette */ | |
| 535 if ( SDL_ShadowSurface->format->palette ) { | |
| 536 SDL_ShadowSurface->flags |= SDL_HWPALETTE; | |
| 537 if ( depth == (SDL_VideoSurface->format)->BitsPerPixel ) { | |
| 538 memcpy(SDL_ShadowSurface->format->palette->colors, | |
| 539 SDL_VideoSurface->format->palette->colors, | |
| 540 SDL_VideoSurface->format->palette->ncolors* | |
| 541 sizeof(SDL_Color)); | |
| 542 } else { | |
| 543 SDL_DitherColors( | |
| 544 SDL_ShadowSurface->format->palette->colors, depth); | |
| 545 } | |
| 546 } | |
| 547 | |
| 548 /* If the video surface is resizable, the shadow should say so */ | |
| 549 if ( (SDL_VideoSurface->flags & SDL_RESIZABLE) == SDL_RESIZABLE ) { | |
| 550 SDL_ShadowSurface->flags |= SDL_RESIZABLE; | |
| 551 } | |
| 552 /* If the video surface has no frame, the shadow should say so */ | |
| 553 if ( (SDL_VideoSurface->flags & SDL_NOFRAME) == SDL_NOFRAME ) { | |
| 554 SDL_ShadowSurface->flags |= SDL_NOFRAME; | |
| 555 } | |
| 556 /* If the video surface is fullscreen, the shadow should say so */ | |
| 557 if ( (SDL_VideoSurface->flags & SDL_FULLSCREEN) == SDL_FULLSCREEN ) { | |
| 558 SDL_ShadowSurface->flags |= SDL_FULLSCREEN; | |
| 559 } | |
| 560 /* If the video surface is flippable, the shadow should say so */ | |
| 561 if ( (SDL_VideoSurface->flags & SDL_DOUBLEBUF) == SDL_DOUBLEBUF ) { | |
| 562 SDL_ShadowSurface->flags |= SDL_DOUBLEBUF; | |
| 563 } | |
| 564 return; | |
| 565 } | |
| 566 | |
| 567 /* | |
| 568 * Set the requested video mode, allocating a shadow buffer if necessary. | |
| 569 */ | |
| 570 SDL_Surface * SDL_SetVideoMode (int width, int height, int bpp, Uint32 flags) | |
| 571 { | |
| 572 SDL_VideoDevice *video, *this; | |
| 573 SDL_Surface *prev_mode, *mode; | |
| 574 int video_w; | |
| 575 int video_h; | |
| 576 int video_bpp; | |
| 577 int is_opengl; | |
| 578 SDL_GrabMode saved_grab; | |
| 579 | |
| 580 /* Start up the video driver, if necessary.. | |
| 581 WARNING: This is the only function protected this way! | |
| 582 */ | |
| 583 if ( ! current_video ) { | |
| 584 if ( SDL_Init(SDL_INIT_VIDEO|SDL_INIT_NOPARACHUTE) < 0 ) { | |
| 585 return(NULL); | |
| 586 } | |
| 587 } | |
| 588 this = video = current_video; | |
| 589 | |
| 590 /* Default to the current video bpp */ | |
| 591 if ( bpp == 0 ) { | |
| 592 flags |= SDL_ANYFORMAT; | |
| 593 bpp = SDL_VideoSurface->format->BitsPerPixel; | |
| 594 } | |
| 595 | |
| 596 /* Get a good video mode, the closest one possible */ | |
| 597 video_w = width; | |
| 598 video_h = height; | |
| 599 video_bpp = bpp; | |
| 600 if ( ! SDL_GetVideoMode(&video_w, &video_h, &video_bpp, flags) ) { | |
| 601 return(NULL); | |
| 602 } | |
| 603 | |
| 604 /* Check the requested flags */ | |
| 605 /* There's no palette in > 8 bits-per-pixel mode */ | |
| 606 if ( video_bpp > 8 ) { | |
| 607 flags &= ~SDL_HWPALETTE; | |
| 608 } | |
| 609 #if 0 | |
| 610 if ( (flags&SDL_FULLSCREEN) != SDL_FULLSCREEN ) { | |
| 611 /* There's no windowed double-buffering */ | |
| 612 flags &= ~SDL_DOUBLEBUF; | |
| 613 } | |
| 614 #endif | |
| 615 if ( (flags&SDL_DOUBLEBUF) == SDL_DOUBLEBUF ) { | |
| 616 /* Use hardware surfaces when double-buffering */ | |
| 617 flags |= SDL_HWSURFACE; | |
| 618 } | |
| 619 | |
| 620 is_opengl = ( ( flags & SDL_OPENGL ) == SDL_OPENGL ); | |
| 621 if ( is_opengl ) { | |
| 622 /* These flags are for 2D video modes only */ | |
| 623 flags &= ~(SDL_HWSURFACE|SDL_DOUBLEBUF); | |
| 624 } | |
| 625 | |
|
14
c3e9d4a623c1
Fixed stuck keys when changing the video mode
Sam Lantinga <slouken@lokigames.com>
parents:
11
diff
changeset
|
626 /* Reset the keyboard here so event callbacks can run */ |
|
c3e9d4a623c1
Fixed stuck keys when changing the video mode
Sam Lantinga <slouken@lokigames.com>
parents:
11
diff
changeset
|
627 SDL_ResetKeyboard(); |
|
460
a888b3ae31ff
Reset mouse state when changing video modes
Sam Lantinga <slouken@libsdl.org>
parents:
456
diff
changeset
|
628 SDL_ResetMouse(); |
|
14
c3e9d4a623c1
Fixed stuck keys when changing the video mode
Sam Lantinga <slouken@lokigames.com>
parents:
11
diff
changeset
|
629 |
| 0 | 630 /* Clean up any previous video mode */ |
| 631 if ( SDL_PublicSurface != NULL ) { | |
| 632 SDL_PublicSurface = NULL; | |
| 633 } | |
| 634 if ( SDL_ShadowSurface != NULL ) { | |
| 635 SDL_Surface *ready_to_go; | |
| 636 ready_to_go = SDL_ShadowSurface; | |
| 637 SDL_ShadowSurface = NULL; | |
| 638 SDL_FreeSurface(ready_to_go); | |
| 639 } | |
| 640 if ( video->physpal ) { | |
| 641 free(video->physpal->colors); | |
| 642 free(video->physpal); | |
| 643 video->physpal = NULL; | |
| 644 } | |
| 645 if( video->gammacols) { | |
|
662
66c02f83f5bf
Date: Sun, 27 Jul 2003 22:37:59 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
656
diff
changeset
|
646 free(video->gammacols); |
| 0 | 647 video->gammacols = NULL; |
| 648 } | |
| 649 | |
| 650 /* Save the previous grab state and turn off grab for mode switch */ | |
| 651 saved_grab = SDL_WM_GrabInputOff(); | |
| 652 | |
| 653 /* Try to set the video mode, along with offset and clipping */ | |
| 654 prev_mode = SDL_VideoSurface; | |
| 655 SDL_LockCursor(); | |
| 656 SDL_VideoSurface = NULL; /* In case it's freed by driver */ | |
| 657 mode = video->SetVideoMode(this, prev_mode,video_w,video_h,video_bpp,flags); | |
| 658 if ( mode ) { /* Prevent resize events from mode change */ | |
| 659 SDL_PrivateResize(mode->w, mode->h); | |
|
229
4d24d5a660a8
Fix a crash if an OpenGL video mode can't be set.
Sam Lantinga <slouken@libsdl.org>
parents:
216
diff
changeset
|
660 |
|
4d24d5a660a8
Fix a crash if an OpenGL video mode can't be set.
Sam Lantinga <slouken@libsdl.org>
parents:
216
diff
changeset
|
661 /* Sam - If we asked for OpenGL mode, and didn't get it, fail */ |
|
4d24d5a660a8
Fix a crash if an OpenGL video mode can't be set.
Sam Lantinga <slouken@libsdl.org>
parents:
216
diff
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|
662 if ( is_opengl && !(mode->flags & SDL_OPENGL) ) { |
|
4d24d5a660a8
Fix a crash if an OpenGL video mode can't be set.
Sam Lantinga <slouken@libsdl.org>
parents:
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diff
changeset
|
663 mode = NULL; |
|
4d24d5a660a8
Fix a crash if an OpenGL video mode can't be set.
Sam Lantinga <slouken@libsdl.org>
parents:
216
diff
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|
664 } |
|
662
66c02f83f5bf
Date: Sun, 27 Jul 2003 22:37:59 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
656
diff
changeset
|
665 } |
| 0 | 666 /* |
| 667 * rcg11292000 | |
| 668 * If you try to set an SDL_OPENGL surface, and fail to find a | |
| 669 * matching visual, then the next call to SDL_SetVideoMode() | |
| 670 * will segfault, since we no longer point to a dummy surface, | |
| 671 * but rather NULL. | |
| 672 * Sam 11/29/00 | |
| 673 * WARNING, we need to make sure that the previous mode hasn't | |
| 674 * already been freed by the video driver. What do we do in | |
| 675 * that case? Should we call SDL_VideoInit() again? | |
| 676 */ | |
| 677 SDL_VideoSurface = (mode != NULL) ? mode : prev_mode; | |
| 678 | |
| 679 if ( (mode != NULL) && (!is_opengl) ) { | |
| 680 /* Sanity check */ | |
| 681 if ( (mode->w < width) || (mode->h < height) ) { | |
| 682 SDL_SetError("Video mode smaller than requested"); | |
| 683 return(NULL); | |
| 684 } | |
| 685 | |
| 686 /* If we have a palettized surface, create a default palette */ | |
| 687 if ( mode->format->palette ) { | |
|
662
66c02f83f5bf
Date: Sun, 27 Jul 2003 22:37:59 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
656
diff
changeset
|
688 SDL_PixelFormat *vf = mode->format; |
| 0 | 689 SDL_DitherColors(vf->palette->colors, vf->BitsPerPixel); |
| 690 video->SetColors(this, 0, vf->palette->ncolors, | |
| 691 vf->palette->colors); | |
| 692 } | |
| 693 | |
| 694 /* Clear the surface to black */ | |
| 695 video->offset_x = 0; | |
| 696 video->offset_y = 0; | |
| 697 mode->offset = 0; | |
| 698 SDL_SetClipRect(mode, NULL); | |
| 699 SDL_ClearSurface(mode); | |
| 700 | |
| 701 /* Now adjust the offsets to match the desired mode */ | |
| 702 video->offset_x = (mode->w-width)/2; | |
| 703 video->offset_y = (mode->h-height)/2; | |
| 704 mode->offset = video->offset_y*mode->pitch + | |
| 705 video->offset_x*mode->format->BytesPerPixel; | |
| 706 #ifdef DEBUG_VIDEO | |
| 707 fprintf(stderr, | |
| 708 "Requested mode: %dx%dx%d, obtained mode %dx%dx%d (offset %d)\n", | |
| 709 width, height, bpp, | |
| 710 mode->w, mode->h, mode->format->BitsPerPixel, mode->offset); | |
| 711 #endif | |
| 712 mode->w = width; | |
| 713 mode->h = height; | |
| 714 SDL_SetClipRect(mode, NULL); | |
| 715 } | |
| 716 SDL_ResetCursor(); | |
| 717 SDL_UnlockCursor(); | |
| 718 | |
| 719 /* If we failed setting a video mode, return NULL... (Uh Oh!) */ | |
| 720 if ( mode == NULL ) { | |
| 721 return(NULL); | |
| 722 } | |
| 723 | |
| 724 /* If there is no window manager, set the SDL_NOFRAME flag */ | |
| 725 if ( ! video->info.wm_available ) { | |
| 726 mode->flags |= SDL_NOFRAME; | |
| 727 } | |
| 728 | |
| 729 /* Reset the mouse cursor and grab for new video mode */ | |
| 730 SDL_SetCursor(NULL); | |
| 731 if ( video->UpdateMouse ) { | |
| 732 video->UpdateMouse(this); | |
| 733 } | |
| 734 SDL_WM_GrabInput(saved_grab); | |
| 735 SDL_GetRelativeMouseState(NULL, NULL); /* Clear first large delta */ | |
| 736 | |
|
650
fe445b59d307
We need to lookup the address of glGetString before calling GL_MakeCurrent(),
Ryan C. Gordon <icculus@icculus.org>
parents:
630
diff
changeset
|
737 #ifdef HAVE_OPENGL |
|
fe445b59d307
We need to lookup the address of glGetString before calling GL_MakeCurrent(),
Ryan C. Gordon <icculus@icculus.org>
parents:
630
diff
changeset
|
738 /* Load GL symbols (before MakeCurrent, where we need glGetString). */ |
|
fe445b59d307
We need to lookup the address of glGetString before calling GL_MakeCurrent(),
Ryan C. Gordon <icculus@icculus.org>
parents:
630
diff
changeset
|
739 if ( flags & (SDL_OPENGL | SDL_OPENGLBLIT) ) { |
|
663
8bedd6d61642
Date: Sat, 2 Aug 2003 16:22:51 +0300
Sam Lantinga <slouken@libsdl.org>
parents:
662
diff
changeset
|
740 #ifndef __QNXNTO__ |
|
650
fe445b59d307
We need to lookup the address of glGetString before calling GL_MakeCurrent(),
Ryan C. Gordon <icculus@icculus.org>
parents:
630
diff
changeset
|
741 #define SDL_PROC(ret,func,params) \ |
|
fe445b59d307
We need to lookup the address of glGetString before calling GL_MakeCurrent(),
Ryan C. Gordon <icculus@icculus.org>
parents:
630
diff
changeset
|
742 do { \ |
|
fe445b59d307
We need to lookup the address of glGetString before calling GL_MakeCurrent(),
Ryan C. Gordon <icculus@icculus.org>
parents:
630
diff
changeset
|
743 video->func = SDL_GL_GetProcAddress(#func); \ |
|
fe445b59d307
We need to lookup the address of glGetString before calling GL_MakeCurrent(),
Ryan C. Gordon <icculus@icculus.org>
parents:
630
diff
changeset
|
744 if ( ! video->func ) { \ |
|
fe445b59d307
We need to lookup the address of glGetString before calling GL_MakeCurrent(),
Ryan C. Gordon <icculus@icculus.org>
parents:
630
diff
changeset
|
745 SDL_SetError("Couldn't load GL function: %s\n", #func); \ |
|
fe445b59d307
We need to lookup the address of glGetString before calling GL_MakeCurrent(),
Ryan C. Gordon <icculus@icculus.org>
parents:
630
diff
changeset
|
746 return(NULL); \ |
|
fe445b59d307
We need to lookup the address of glGetString before calling GL_MakeCurrent(),
Ryan C. Gordon <icculus@icculus.org>
parents:
630
diff
changeset
|
747 } \ |
|
fe445b59d307
We need to lookup the address of glGetString before calling GL_MakeCurrent(),
Ryan C. Gordon <icculus@icculus.org>
parents:
630
diff
changeset
|
748 } while ( 0 ); |
|
663
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749 #else |
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750 #define SDL_PROC(ret,func,params) video->func=func; |
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751 #endif /* __QNXNTO__ */ |
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752 #include "SDL_glfuncs.h" |
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753 #undef SDL_PROC |
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754 } |
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755 #endif |
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756 |
| 0 | 757 /* If we're running OpenGL, make the context current */ |
| 758 if ( (video->screen->flags & SDL_OPENGL) && | |
| 759 video->GL_MakeCurrent ) { | |
| 760 if ( video->GL_MakeCurrent(this) < 0 ) { | |
| 761 return(NULL); | |
| 762 } | |
| 763 } | |
| 764 | |
| 765 /* Set up a fake SDL surface for OpenGL "blitting" */ | |
| 766 if ( (flags & SDL_OPENGLBLIT) == SDL_OPENGLBLIT ) { | |
| 767 /* Load GL functions for performing the texture updates */ | |
| 768 #ifdef HAVE_OPENGL | |
| 769 | |
| 770 /* Create a software surface for blitting */ | |
| 771 #ifdef GL_VERSION_1_2 | |
| 772 /* If the implementation either supports the packed pixels | |
| 773 extension, or implements the core OpenGL 1.2 API, it will | |
| 774 support the GL_UNSIGNED_SHORT_5_6_5 texture format. | |
| 775 */ | |
| 776 if ( (bpp == 16) && | |
|
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777 (strstr((const char *)video->glGetString(GL_EXTENSIONS), "GL_EXT_packed_pixels") || |
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778 (atof((const char *)video->glGetString(GL_VERSION)) >= 1.2f)) |
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779 ) { |
| 0 | 780 video->is_32bit = 0; |
| 781 SDL_VideoSurface = SDL_CreateRGBSurface( | |
| 782 flags, | |
| 783 width, | |
| 784 height, | |
| 785 16, | |
| 786 31 << 11, | |
| 787 63 << 5, | |
| 788 31, | |
| 789 0 | |
| 790 ); | |
| 791 } | |
| 792 else | |
| 793 #endif /* OpenGL 1.2 */ | |
| 794 { | |
| 795 video->is_32bit = 1; | |
| 796 SDL_VideoSurface = SDL_CreateRGBSurface( | |
| 797 flags, | |
| 798 width, | |
| 799 height, | |
| 800 32, | |
| 801 #if SDL_BYTEORDER == SDL_LIL_ENDIAN | |
| 802 0x000000FF, | |
| 803 0x0000FF00, | |
| 804 0x00FF0000, | |
| 805 0xFF000000 | |
| 806 #else | |
| 807 0xFF000000, | |
| 808 0x00FF0000, | |
| 809 0x0000FF00, | |
| 810 0x000000FF | |
| 811 #endif | |
| 812 ); | |
| 813 } | |
| 814 if ( ! SDL_VideoSurface ) { | |
| 815 return(NULL); | |
| 816 } | |
| 817 SDL_VideoSurface->flags = mode->flags | SDL_OPENGLBLIT; | |
| 818 | |
| 819 /* Free the original video mode surface (is this safe?) */ | |
| 820 SDL_FreeSurface(mode); | |
| 821 | |
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822 /* Set the surface completely opaque & white by default */ |
| 0 | 823 memset( SDL_VideoSurface->pixels, 255, SDL_VideoSurface->h * SDL_VideoSurface->pitch ); |
| 824 video->glGenTextures( 1, &video->texture ); | |
| 825 video->glBindTexture( GL_TEXTURE_2D, video->texture ); | |
| 826 video->glTexImage2D( | |
| 827 GL_TEXTURE_2D, | |
| 828 0, | |
| 829 video->is_32bit ? GL_RGBA : GL_RGB, | |
| 830 256, | |
| 831 256, | |
| 832 0, | |
| 833 video->is_32bit ? GL_RGBA : GL_RGB, | |
| 834 #ifdef GL_VERSION_1_2 | |
| 835 video->is_32bit ? GL_UNSIGNED_BYTE : GL_UNSIGNED_SHORT_5_6_5, | |
| 836 #else | |
| 837 GL_UNSIGNED_BYTE, | |
| 838 #endif | |
| 839 NULL); | |
| 840 | |
| 841 video->UpdateRects = SDL_GL_UpdateRectsLock; | |
| 842 #else | |
| 843 SDL_SetError("Somebody forgot to #define HAVE_OPENGL"); | |
| 844 return(NULL); | |
| 845 #endif | |
| 846 } | |
| 847 | |
| 848 /* Create a shadow surface if necessary */ | |
| 849 /* There are three conditions under which we create a shadow surface: | |
| 850 1. We need a particular bits-per-pixel that we didn't get. | |
| 851 2. We need a hardware palette and didn't get one. | |
| 852 3. We need a software surface and got a hardware surface. | |
| 853 */ | |
| 854 if ( !(SDL_VideoSurface->flags & SDL_OPENGL) && | |
| 855 ( | |
| 856 ( !(flags&SDL_ANYFORMAT) && | |
| 857 (SDL_VideoSurface->format->BitsPerPixel != bpp)) || | |
| 858 ( (flags&SDL_HWPALETTE) && | |
| 859 !(SDL_VideoSurface->flags&SDL_HWPALETTE)) || | |
| 860 /* If the surface is in hardware, video writes are visible | |
| 861 as soon as they are performed, so we need to buffer them | |
| 862 */ | |
| 863 ( ((flags&SDL_HWSURFACE) == SDL_SWSURFACE) && | |
|
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864 (SDL_VideoSurface->flags&SDL_HWSURFACE)) || |
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865 ( (flags&SDL_DOUBLEBUF) && |
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866 (SDL_VideoSurface->flags&SDL_HWSURFACE) && |
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867 !(SDL_VideoSurface->flags&SDL_DOUBLEBUF)) |
| 0 | 868 ) ) { |
| 869 SDL_CreateShadowSurface(bpp); | |
| 870 if ( SDL_ShadowSurface == NULL ) { | |
| 871 SDL_SetError("Couldn't create shadow surface"); | |
| 872 return(NULL); | |
| 873 } | |
| 874 SDL_PublicSurface = SDL_ShadowSurface; | |
| 875 } else { | |
| 876 SDL_PublicSurface = SDL_VideoSurface; | |
| 877 } | |
| 878 video->info.vfmt = SDL_VideoSurface->format; | |
| 879 | |
| 880 /* We're done! */ | |
| 881 return(SDL_PublicSurface); | |
| 882 } | |
| 883 | |
| 884 /* | |
| 885 * Convert a surface into the video pixel format. | |
| 886 */ | |
| 887 SDL_Surface * SDL_DisplayFormat (SDL_Surface *surface) | |
| 888 { | |
| 889 Uint32 flags; | |
| 890 | |
| 891 if ( ! SDL_PublicSurface ) { | |
| 892 SDL_SetError("No video mode has been set"); | |
| 893 return(NULL); | |
| 894 } | |
| 895 /* Set the flags appropriate for copying to display surface */ | |
|
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896 if (((SDL_PublicSurface->flags&SDL_HWSURFACE) == SDL_HWSURFACE) && current_video->info.blit_hw) |
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897 flags = SDL_HWSURFACE; |
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898 else |
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899 flags = SDL_SWSURFACE; |
| 0 | 900 #ifdef AUTORLE_DISPLAYFORMAT |
| 901 flags |= (surface->flags & (SDL_SRCCOLORKEY|SDL_SRCALPHA)); | |
| 902 flags |= SDL_RLEACCELOK; | |
| 903 #else | |
| 904 flags |= surface->flags & (SDL_SRCCOLORKEY|SDL_SRCALPHA|SDL_RLEACCELOK); | |
| 905 #endif | |
| 906 return(SDL_ConvertSurface(surface, SDL_PublicSurface->format, flags)); | |
| 907 } | |
| 908 | |
| 909 /* | |
| 910 * Convert a surface into a format that's suitable for blitting to | |
| 911 * the screen, but including an alpha channel. | |
| 912 */ | |
| 913 SDL_Surface *SDL_DisplayFormatAlpha(SDL_Surface *surface) | |
| 914 { | |
| 915 SDL_PixelFormat *vf; | |
| 916 SDL_PixelFormat *format; | |
| 917 SDL_Surface *converted; | |
| 918 Uint32 flags; | |
| 919 /* default to ARGB8888 */ | |
| 920 Uint32 amask = 0xff000000; | |
| 921 Uint32 rmask = 0x00ff0000; | |
| 922 Uint32 gmask = 0x0000ff00; | |
| 923 Uint32 bmask = 0x000000ff; | |
| 924 | |
| 925 if ( ! SDL_PublicSurface ) { | |
| 926 SDL_SetError("No video mode has been set"); | |
| 927 return(NULL); | |
| 928 } | |
| 929 vf = SDL_PublicSurface->format; | |
| 930 | |
| 931 switch(vf->BytesPerPixel) { | |
| 932 case 2: | |
| 933 /* For XGY5[56]5, use, AXGY8888, where {X, Y} = {R, B}. | |
| 934 For anything else (like ARGB4444) it doesn't matter | |
| 935 since we have no special code for it anyway */ | |
| 936 if ( (vf->Rmask == 0x1f) && | |
| 937 (vf->Bmask == 0xf800 || vf->Bmask == 0x7c00)) { | |
| 938 rmask = 0xff; | |
| 939 bmask = 0xff0000; | |
| 940 } | |
| 941 break; | |
| 942 | |
| 943 case 3: | |
| 944 case 4: | |
| 945 /* Keep the video format, as long as the high 8 bits are | |
| 946 unused or alpha */ | |
| 947 if ( (vf->Rmask == 0xff) && (vf->Bmask == 0xff0000) ) { | |
| 948 rmask = 0xff; | |
| 949 bmask = 0xff0000; | |
| 950 } | |
| 951 break; | |
| 952 | |
| 953 default: | |
| 954 /* We have no other optimised formats right now. When/if a new | |
| 955 optimised alpha format is written, add the converter here */ | |
| 956 break; | |
| 957 } | |
| 958 format = SDL_AllocFormat(32, rmask, gmask, bmask, amask); | |
| 959 flags = SDL_PublicSurface->flags & SDL_HWSURFACE; | |
| 960 flags |= surface->flags & (SDL_SRCALPHA | SDL_RLEACCELOK); | |
| 961 converted = SDL_ConvertSurface(surface, format, flags); | |
| 962 SDL_FreeFormat(format); | |
| 963 return(converted); | |
| 964 } | |
| 965 | |
| 966 /* | |
| 967 * Update a specific portion of the physical screen | |
| 968 */ | |
| 969 void SDL_UpdateRect(SDL_Surface *screen, Sint32 x, Sint32 y, Uint32 w, Uint32 h) | |
| 970 { | |
| 971 if ( screen ) { | |
| 972 SDL_Rect rect; | |
| 973 | |
| 974 /* Perform some checking */ | |
| 975 if ( w == 0 ) | |
| 976 w = screen->w; | |
| 977 if ( h == 0 ) | |
| 978 h = screen->h; | |
| 979 if ( (int)(x+w) > screen->w ) | |
| 980 return; | |
| 981 if ( (int)(y+h) > screen->h ) | |
| 982 return; | |
| 983 | |
| 984 /* Fill the rectangle */ | |
| 985 rect.x = x; | |
| 986 rect.y = y; | |
| 987 rect.w = w; | |
| 988 rect.h = h; | |
| 989 SDL_UpdateRects(screen, 1, &rect); | |
| 990 } | |
| 991 } | |
| 992 void SDL_UpdateRects (SDL_Surface *screen, int numrects, SDL_Rect *rects) | |
| 993 { | |
| 994 int i; | |
| 995 SDL_VideoDevice *video = current_video; | |
| 996 SDL_VideoDevice *this = current_video; | |
| 997 | |
| 998 if ( screen == SDL_ShadowSurface ) { | |
| 999 /* Blit the shadow surface using saved mapping */ | |
|
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1000 SDL_Palette *pal = screen->format->palette; |
| 0 | 1001 SDL_Color *saved_colors = NULL; |
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1002 if ( pal && !(SDL_VideoSurface->flags & SDL_HWPALETTE) ) { |
| 0 | 1003 /* simulated 8bpp, use correct physical palette */ |
| 1004 saved_colors = pal->colors; | |
| 1005 if ( video->gammacols ) { | |
| 1006 /* gamma-corrected palette */ | |
| 1007 pal->colors = video->gammacols; | |
| 1008 } else if ( video->physpal ) { | |
| 1009 /* physical palette different from logical */ | |
| 1010 pal->colors = video->physpal->colors; | |
| 1011 } | |
| 1012 } | |
| 1013 if ( SHOULD_DRAWCURSOR(SDL_cursorstate) ) { | |
| 1014 SDL_LockCursor(); | |
| 1015 SDL_DrawCursor(SDL_ShadowSurface); | |
| 1016 for ( i=0; i<numrects; ++i ) { | |
| 1017 SDL_LowerBlit(SDL_ShadowSurface, &rects[i], | |
| 1018 SDL_VideoSurface, &rects[i]); | |
| 1019 } | |
| 1020 SDL_EraseCursor(SDL_ShadowSurface); | |
| 1021 SDL_UnlockCursor(); | |
| 1022 } else { | |
| 1023 for ( i=0; i<numrects; ++i ) { | |
| 1024 SDL_LowerBlit(SDL_ShadowSurface, &rects[i], | |
| 1025 SDL_VideoSurface, &rects[i]); | |
| 1026 } | |
| 1027 } | |
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1028 if ( saved_colors ) { |
| 0 | 1029 pal->colors = saved_colors; |
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1030 } |
| 0 | 1031 |
| 1032 /* Fall through to video surface update */ | |
| 1033 screen = SDL_VideoSurface; | |
| 1034 } | |
| 1035 if ( screen == SDL_VideoSurface ) { | |
| 1036 /* Update the video surface */ | |
| 1037 if ( screen->offset ) { | |
| 1038 for ( i=0; i<numrects; ++i ) { | |
| 1039 rects[i].x += video->offset_x; | |
| 1040 rects[i].y += video->offset_y; | |
| 1041 } | |
| 1042 video->UpdateRects(this, numrects, rects); | |
| 1043 for ( i=0; i<numrects; ++i ) { | |
| 1044 rects[i].x -= video->offset_x; | |
| 1045 rects[i].y -= video->offset_y; | |
| 1046 } | |
| 1047 } else { | |
| 1048 video->UpdateRects(this, numrects, rects); | |
| 1049 } | |
| 1050 } | |
| 1051 } | |
| 1052 | |
| 1053 /* | |
| 1054 * Performs hardware double buffering, if possible, or a full update if not. | |
| 1055 */ | |
| 1056 int SDL_Flip(SDL_Surface *screen) | |
| 1057 { | |
| 1058 SDL_VideoDevice *video = current_video; | |
| 1059 /* Copy the shadow surface to the video surface */ | |
| 1060 if ( screen == SDL_ShadowSurface ) { | |
| 1061 SDL_Rect rect; | |
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1062 SDL_Palette *pal = screen->format->palette; |
| 0 | 1063 SDL_Color *saved_colors = NULL; |
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1064 if ( pal && !(SDL_VideoSurface->flags & SDL_HWPALETTE) ) { |
| 0 | 1065 /* simulated 8bpp, use correct physical palette */ |
| 1066 saved_colors = pal->colors; | |
| 1067 if ( video->gammacols ) { | |
| 1068 /* gamma-corrected palette */ | |
| 1069 pal->colors = video->gammacols; | |
| 1070 } else if ( video->physpal ) { | |
| 1071 /* physical palette different from logical */ | |
| 1072 pal->colors = video->physpal->colors; | |
| 1073 } | |
| 1074 } | |
| 1075 | |
| 1076 rect.x = 0; | |
| 1077 rect.y = 0; | |
| 1078 rect.w = screen->w; | |
| 1079 rect.h = screen->h; | |
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1080 if ( SHOULD_DRAWCURSOR(SDL_cursorstate) ) { |
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1081 SDL_LockCursor(); |
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1082 SDL_DrawCursor(SDL_ShadowSurface); |
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1083 SDL_LowerBlit(SDL_ShadowSurface, &rect, |
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1084 SDL_VideoSurface, &rect); |
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1085 SDL_EraseCursor(SDL_ShadowSurface); |
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1086 SDL_UnlockCursor(); |
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1087 } else { |
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1088 SDL_LowerBlit(SDL_ShadowSurface, &rect, |
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1089 SDL_VideoSurface, &rect); |
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1090 } |
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1091 if ( saved_colors ) { |
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1092 pal->colors = saved_colors; |
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1093 } |
| 0 | 1094 |
|
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1095 /* Fall through to video surface update */ |
| 0 | 1096 screen = SDL_VideoSurface; |
| 1097 } | |
| 1098 if ( (screen->flags & SDL_DOUBLEBUF) == SDL_DOUBLEBUF ) { | |
| 1099 SDL_VideoDevice *this = current_video; | |
| 1100 return(video->FlipHWSurface(this, SDL_VideoSurface)); | |
| 1101 } else { | |
| 1102 SDL_UpdateRect(screen, 0, 0, 0, 0); | |
| 1103 } | |
| 1104 return(0); | |
| 1105 } | |
| 1106 | |
| 1107 static void SetPalette_logical(SDL_Surface *screen, SDL_Color *colors, | |
| 1108 int firstcolor, int ncolors) | |
| 1109 { | |
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1110 SDL_Palette *pal = screen->format->palette; |
| 0 | 1111 SDL_Palette *vidpal; |
| 1112 | |
| 1113 if ( colors != (pal->colors + firstcolor) ) { | |
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1114 memcpy(pal->colors + firstcolor, colors, |
| 0 | 1115 ncolors * sizeof(*colors)); |
| 1116 } | |
| 1117 | |
| 1118 vidpal = SDL_VideoSurface->format->palette; | |
| 1119 if ( (screen == SDL_ShadowSurface) && vidpal ) { | |
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1120 /* |
| 0 | 1121 * This is a shadow surface, and the physical |
| 1122 * framebuffer is also indexed. Propagate the | |
| 1123 * changes to its logical palette so that | |
| 1124 * updates are always identity blits | |
| 1125 */ | |
| 1126 memcpy(vidpal->colors + firstcolor, colors, | |
| 1127 ncolors * sizeof(*colors)); | |
| 1128 } | |
| 1129 SDL_FormatChanged(screen); | |
| 1130 } | |
| 1131 | |
| 1132 static int SetPalette_physical(SDL_Surface *screen, | |
| 1133 SDL_Color *colors, int firstcolor, int ncolors) | |
| 1134 { | |
| 1135 SDL_VideoDevice *video = current_video; | |
| 1136 int gotall = 1; | |
| 1137 | |
| 1138 if ( video->physpal ) { | |
| 1139 /* We need to copy the new colors, since we haven't | |
| 1140 * already done the copy in the logical set above. | |
| 1141 */ | |
| 1142 memcpy(video->physpal->colors + firstcolor, | |
| 1143 colors, ncolors * sizeof(*colors)); | |
| 1144 } | |
| 1145 if ( screen == SDL_ShadowSurface ) { | |
| 1146 if ( SDL_VideoSurface->flags & SDL_HWPALETTE ) { | |
| 1147 /* | |
| 1148 * The real screen is also indexed - set its physical | |
| 1149 * palette. The physical palette does not include the | |
| 1150 * gamma modification, we apply it directly instead, | |
| 1151 * but this only happens if we have hardware palette. | |
| 1152 */ | |
| 1153 screen = SDL_VideoSurface; | |
| 1154 } else { | |
| 1155 /* | |
| 1156 * The video surface is not indexed - invalidate any | |
| 1157 * active shadow-to-video blit mappings. | |
| 1158 */ | |
| 1159 if ( screen->map->dst == SDL_VideoSurface ) { | |
| 1160 SDL_InvalidateMap(screen->map); | |
| 1161 } | |
| 1162 if ( video->gamma ) { | |
| 1163 if( ! video->gammacols ) { | |
| 1164 SDL_Palette *pp = video->physpal; | |
| 1165 if(!pp) | |
| 1166 pp = screen->format->palette; | |
| 1167 video->gammacols = malloc(pp->ncolors | |
| 1168 * sizeof(SDL_Color)); | |
| 1169 SDL_ApplyGamma(video->gamma, | |
| 1170 pp->colors, | |
| 1171 video->gammacols, | |
| 1172 pp->ncolors); | |
| 1173 } else { | |
| 1174 SDL_ApplyGamma(video->gamma, colors, | |
| 1175 video->gammacols | |
| 1176 + firstcolor, | |
| 1177 ncolors); | |
| 1178 } | |
| 1179 } | |
| 1180 SDL_UpdateRect(screen, 0, 0, 0, 0); | |
| 1181 } | |
| 1182 } | |
| 1183 | |
| 1184 if ( screen == SDL_VideoSurface ) { | |
| 1185 SDL_Color gcolors[256]; | |
| 1186 | |
|
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1187 if ( video->gamma ) { |
|
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|
1188 SDL_ApplyGamma(video->gamma, colors, gcolors, ncolors); |
| 0 | 1189 colors = gcolors; |
| 1190 } | |
| 1191 gotall = video->SetColors(video, firstcolor, ncolors, colors); | |
| 1192 if ( ! gotall ) { | |
| 1193 /* The video flags shouldn't have SDL_HWPALETTE, and | |
| 1194 the video driver is responsible for copying back the | |
| 1195 correct colors into the video surface palette. | |
| 1196 */ | |
| 1197 ; | |
| 1198 } | |
| 1199 SDL_CursorPaletteChanged(); | |
| 1200 } | |
| 1201 return gotall; | |
| 1202 } | |
| 1203 | |
| 1204 /* | |
| 1205 * Set the physical and/or logical colormap of a surface: | |
| 1206 * Only the screen has a physical colormap. It determines what is actually | |
| 1207 * sent to the display. | |
| 1208 * The logical colormap is used to map blits to/from the surface. | |
| 1209 * 'which' is one or both of SDL_LOGPAL, SDL_PHYSPAL | |
| 1210 * | |
| 1211 * Return nonzero if all colours were set as requested, or 0 otherwise. | |
| 1212 */ | |
| 1213 int SDL_SetPalette(SDL_Surface *screen, int which, | |
| 1214 SDL_Color *colors, int firstcolor, int ncolors) | |
| 1215 { | |
|
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|
1216 SDL_Palette *pal; |
| 0 | 1217 int gotall; |
| 1218 int palsize; | |
| 1219 | |
| 34 | 1220 if ( ! current_video ) { |
| 1221 return 0; | |
| 1222 } | |
| 0 | 1223 if ( screen != SDL_PublicSurface ) { |
|
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|
1224 /* only screens have physical palettes */ |
|
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|
1225 which &= ~SDL_PHYSPAL; |
| 0 | 1226 } else if( (screen->flags & SDL_HWPALETTE) != SDL_HWPALETTE ) { |
|
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|
1227 /* hardware palettes required for split colormaps */ |
|
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|
1228 which |= SDL_PHYSPAL | SDL_LOGPAL; |
| 0 | 1229 } |
| 1230 | |
| 1231 /* Verify the parameters */ | |
| 1232 pal = screen->format->palette; | |
| 1233 if( !pal ) { | |
|
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Date: Sun, 27 Jul 2003 22:37:59 +0200
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|
1234 return 0; /* not a palettized surface */ |
| 0 | 1235 } |
| 1236 gotall = 1; | |
| 1237 palsize = 1 << screen->format->BitsPerPixel; | |
| 1238 if ( ncolors > (palsize - firstcolor) ) { | |
|
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changeset
|
1239 ncolors = (palsize - firstcolor); |
| 0 | 1240 gotall = 0; |
| 1241 } | |
| 1242 | |
| 1243 if ( which & SDL_LOGPAL ) { | |
| 1244 /* | |
| 1245 * Logical palette change: The actual screen isn't affected, | |
| 1246 * but the internal colormap is altered so that the | |
| 1247 * interpretation of the pixel values (for blits etc) is | |
| 1248 * changed. | |
| 1249 */ | |
|
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|
1250 SetPalette_logical(screen, colors, firstcolor, ncolors); |
| 0 | 1251 } |
| 1252 if ( which & SDL_PHYSPAL ) { | |
| 1253 SDL_VideoDevice *video = current_video; | |
|
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Date: Sun, 27 Jul 2003 22:37:59 +0200
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|
1254 /* |
| 0 | 1255 * Physical palette change: This doesn't affect the |
| 1256 * program's idea of what the screen looks like, but changes | |
| 1257 * its actual appearance. | |
| 1258 */ | |
|
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|
1259 if(!video) |
|
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|
1260 return gotall; /* video not yet initialized */ |
| 0 | 1261 if(!video->physpal && !(which & SDL_LOGPAL) ) { |
| 1262 /* Lazy physical palette allocation */ | |
|
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|
1263 int size; |
| 0 | 1264 SDL_Palette *pp = malloc(sizeof(*pp)); |
| 1265 current_video->physpal = pp; | |
| 1266 pp->ncolors = pal->ncolors; | |
| 1267 size = pp->ncolors * sizeof(SDL_Color); | |
| 1268 pp->colors = malloc(size); | |
| 1269 memcpy(pp->colors, pal->colors, size); | |
| 1270 } | |
| 1271 if ( ! SetPalette_physical(screen, | |
| 1272 colors, firstcolor, ncolors) ) { | |
| 1273 gotall = 0; | |
| 1274 } | |
| 1275 } | |
| 1276 return gotall; | |
| 1277 } | |
| 1278 | |
| 1279 int SDL_SetColors(SDL_Surface *screen, SDL_Color *colors, int firstcolor, | |
| 1280 int ncolors) | |
| 1281 { | |
|
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|
1282 return SDL_SetPalette(screen, SDL_LOGPAL | SDL_PHYSPAL, |
| 0 | 1283 colors, firstcolor, ncolors); |
| 1284 } | |
| 1285 | |
| 1286 /* | |
| 1287 * Clean up the video subsystem | |
| 1288 */ | |
| 1289 void SDL_VideoQuit (void) | |
| 1290 { | |
| 1291 SDL_Surface *ready_to_go; | |
| 1292 | |
| 1293 if ( current_video ) { | |
| 1294 SDL_VideoDevice *video = current_video; | |
| 1295 SDL_VideoDevice *this = current_video; | |
| 1296 | |
| 1297 /* Halt event processing before doing anything else */ | |
| 1298 SDL_StopEventLoop(); | |
| 1299 | |
| 1300 /* Clean up allocated window manager items */ | |
| 1301 if ( SDL_PublicSurface ) { | |
| 1302 SDL_PublicSurface = NULL; | |
| 1303 } | |
| 1304 SDL_CursorQuit(); | |
| 1305 | |
| 1306 /* Just in case... */ | |
| 1307 SDL_WM_GrabInputOff(); | |
| 1308 | |
| 1309 /* Clean up the system video */ | |
| 1310 video->VideoQuit(this); | |
| 1311 | |
| 1312 /* Free any lingering surfaces */ | |
| 1313 ready_to_go = SDL_ShadowSurface; | |
| 1314 SDL_ShadowSurface = NULL; | |
| 1315 SDL_FreeSurface(ready_to_go); | |
| 1316 if ( SDL_VideoSurface != NULL ) { | |
| 1317 ready_to_go = SDL_VideoSurface; | |
| 1318 SDL_VideoSurface = NULL; | |
| 1319 SDL_FreeSurface(ready_to_go); | |
| 1320 } | |
| 1321 SDL_PublicSurface = NULL; | |
| 1322 | |
| 1323 /* Clean up miscellaneous memory */ | |
| 1324 if ( video->physpal ) { | |
| 1325 free(video->physpal->colors); | |
| 1326 free(video->physpal); | |
| 1327 video->physpal = NULL; | |
| 1328 } | |
| 1329 if ( video->gammacols ) { | |
| 1330 free(video->gammacols); | |
| 1331 video->gammacols = NULL; | |
| 1332 } | |
| 1333 if ( video->gamma ) { | |
| 1334 free(video->gamma); | |
| 1335 video->gamma = NULL; | |
| 1336 } | |
|
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* Removed fullscreen menu option from the "Window" menu
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|
1337 if ( video->wm_title != NULL ) { |
|
bd6b0a910a65
* Removed fullscreen menu option from the "Window" menu
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parents:
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diff
changeset
|
1338 free(video->wm_title); |
|
bd6b0a910a65
* Removed fullscreen menu option from the "Window" menu
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|
1339 video->wm_title = NULL; |
| 0 | 1340 } |
|
58
bd6b0a910a65
* Removed fullscreen menu option from the "Window" menu
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diff
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|
1341 if ( video->wm_icon != NULL ) { |
|
bd6b0a910a65
* Removed fullscreen menu option from the "Window" menu
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|
1342 free(video->wm_icon); |
|
bd6b0a910a65
* Removed fullscreen menu option from the "Window" menu
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|
1343 video->wm_icon = NULL; |
| 0 | 1344 } |
| 1345 | |
| 1346 /* Finish cleaning up video subsystem */ | |
| 1347 video->free(this); | |
| 1348 current_video = NULL; | |
| 1349 } | |
| 1350 return; | |
| 1351 } | |
| 1352 | |
| 1353 /* Load the GL driver library */ | |
| 1354 int SDL_GL_LoadLibrary(const char *path) | |
| 1355 { | |
| 1356 SDL_VideoDevice *video = current_video; | |
| 1357 SDL_VideoDevice *this = current_video; | |
| 1358 int retval; | |
| 1359 | |
| 1360 retval = -1; | |
|
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|
1361 if ( video == NULL ) { |
|
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More correct error reported when calling SDL_GL_LoadLibrary() without
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|
1362 SDL_SetError("Video subsystem has not been initialized"); |
| 0 | 1363 } else { |
|
423
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|
1364 if ( video->GL_LoadLibrary ) { |
|
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|
1365 retval = video->GL_LoadLibrary(this, path); |
|
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|
1366 } else { |
|
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|
1367 SDL_SetError("No dynamic GL support in video driver"); |
|
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|
1368 } |
| 0 | 1369 } |
| 1370 return(retval); | |
| 1371 } | |
| 1372 | |
| 1373 void *SDL_GL_GetProcAddress(const char* proc) | |
| 1374 { | |
| 1375 SDL_VideoDevice *video = current_video; | |
| 1376 SDL_VideoDevice *this = current_video; | |
| 1377 void *func; | |
| 1378 | |
| 1379 func = NULL; | |
| 1380 if ( video->GL_GetProcAddress ) { | |
| 1381 if ( video->gl_config.driver_loaded ) { | |
| 1382 func = video->GL_GetProcAddress(this, proc); | |
| 1383 } else { | |
| 1384 SDL_SetError("No GL driver has been loaded"); | |
| 1385 } | |
| 1386 } else { | |
| 1387 SDL_SetError("No dynamic GL support in video driver"); | |
| 1388 } | |
| 1389 return func; | |
| 1390 } | |
| 1391 | |
| 1392 /* Set the specified GL attribute for setting up a GL video mode */ | |
| 1393 int SDL_GL_SetAttribute( SDL_GLattr attr, int value ) | |
| 1394 { | |
| 1395 int retval; | |
| 1396 SDL_VideoDevice *video = current_video; | |
| 1397 | |
| 1398 retval = 0; | |
| 1399 switch (attr) { | |
| 1400 case SDL_GL_RED_SIZE: | |
| 1401 video->gl_config.red_size = value; | |
| 1402 break; | |
| 1403 case SDL_GL_GREEN_SIZE: | |
| 1404 video->gl_config.green_size = value; | |
| 1405 break; | |
| 1406 case SDL_GL_BLUE_SIZE: | |
| 1407 video->gl_config.blue_size = value; | |
| 1408 break; | |
| 1409 case SDL_GL_ALPHA_SIZE: | |
| 1410 video->gl_config.alpha_size = value; | |
| 1411 break; | |
| 1412 case SDL_GL_DOUBLEBUFFER: | |
| 1413 video->gl_config.double_buffer = value; | |
| 1414 break; | |
|
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|
1415 case SDL_GL_BUFFER_SIZE: |
|
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|
1416 video->gl_config.buffer_size = value; |
| 0 | 1417 break; |
| 1418 case SDL_GL_DEPTH_SIZE: | |
| 1419 video->gl_config.depth_size = value; | |
| 1420 break; | |
| 1421 case SDL_GL_STENCIL_SIZE: | |
| 1422 video->gl_config.stencil_size = value; | |
| 1423 break; | |
|
450
8a43e0cbf02f
Added SDL_GL_STEREO for stereoscopic OpenGL contexts
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diff
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|
1424 case SDL_GL_ACCUM_RED_SIZE: |
| 0 | 1425 video->gl_config.accum_red_size = value; |
| 1426 break; | |
|
450
8a43e0cbf02f
Added SDL_GL_STEREO for stereoscopic OpenGL contexts
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433
diff
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|
1427 case SDL_GL_ACCUM_GREEN_SIZE: |
| 0 | 1428 video->gl_config.accum_green_size = value; |
| 1429 break; | |
|
450
8a43e0cbf02f
Added SDL_GL_STEREO for stereoscopic OpenGL contexts
Sam Lantinga <slouken@libsdl.org>
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433
diff
changeset
|
1430 case SDL_GL_ACCUM_BLUE_SIZE: |
| 0 | 1431 video->gl_config.accum_blue_size = value; |
| 1432 break; | |
|
450
8a43e0cbf02f
Added SDL_GL_STEREO for stereoscopic OpenGL contexts
Sam Lantinga <slouken@libsdl.org>
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433
diff
changeset
|
1433 case SDL_GL_ACCUM_ALPHA_SIZE: |
| 0 | 1434 video->gl_config.accum_alpha_size = value; |
| 1435 break; | |
|
450
8a43e0cbf02f
Added SDL_GL_STEREO for stereoscopic OpenGL contexts
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433
diff
changeset
|
1436 case SDL_GL_STEREO: |
|
8a43e0cbf02f
Added SDL_GL_STEREO for stereoscopic OpenGL contexts
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parents:
433
diff
changeset
|
1437 video->gl_config.stereo = value; |
|
8a43e0cbf02f
Added SDL_GL_STEREO for stereoscopic OpenGL contexts
Sam Lantinga <slouken@libsdl.org>
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|
1438 break; |
|
656
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Merged in Ryan's multisample code for MacOS, and changed the constants to match.
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|
1439 case SDL_GL_MULTISAMPLEBUFFERS: |
|
864e2d2a9a55
Merged in Ryan's multisample code for MacOS, and changed the constants to match.
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|
1440 video->gl_config.multisamplebuffers = value; |
|
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Date: Thu, 24 Apr 2003 15:13:47 -0400
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|
1441 break; |
|
656
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Merged in Ryan's multisample code for MacOS, and changed the constants to match.
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|
1442 case SDL_GL_MULTISAMPLESAMPLES: |
|
864e2d2a9a55
Merged in Ryan's multisample code for MacOS, and changed the constants to match.
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|
1443 video->gl_config.multisamplesamples = value; |
|
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|
1444 break; |
| 0 | 1445 default: |
| 1446 SDL_SetError("Unknown OpenGL attribute"); | |
| 1447 retval = -1; | |
| 1448 break; | |
| 1449 } | |
| 1450 return(retval); | |
| 1451 } | |
| 1452 | |
| 1453 /* Retrieve an attribute value from the windowing system. */ | |
| 1454 int SDL_GL_GetAttribute(SDL_GLattr attr, int* value) | |
| 1455 { | |
| 1456 int retval = -1; | |
| 1457 SDL_VideoDevice* video = current_video; | |
| 1458 SDL_VideoDevice* this = current_video; | |
| 1459 | |
| 1460 if ( video->GL_GetAttribute ) { | |
| 1461 retval = this->GL_GetAttribute(this, attr, value); | |
|
11
7b94b6379341
*** empty log message ***
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parents:
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diff
changeset
|
1462 } else { |
|
7b94b6379341
*** empty log message ***
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diff
changeset
|
1463 *value = 0; |
|
7b94b6379341
*** empty log message ***
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parents:
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diff
changeset
|
1464 SDL_SetError("GL_GetAttribute not supported"); |
| 0 | 1465 } |
| 1466 return retval; | |
| 1467 } | |
| 1468 | |
| 1469 /* Perform a GL buffer swap on the current GL context */ | |
| 1470 void SDL_GL_SwapBuffers(void) | |
| 1471 { | |
| 1472 SDL_VideoDevice *video = current_video; | |
| 1473 SDL_VideoDevice *this = current_video; | |
| 1474 | |
| 1475 if ( video->screen->flags & SDL_OPENGL ) { | |
|
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|
1476 video->GL_SwapBuffers(this); |
|
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|
1477 } else { |
|
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|
1478 SDL_SetError("OpenGL video mode has not been set"); |
| 0 | 1479 } |
| 1480 } | |
| 1481 | |
| 1482 /* Update rects with locking */ | |
| 1483 void SDL_GL_UpdateRectsLock(SDL_VideoDevice* this, int numrects, SDL_Rect *rects) | |
| 1484 { | |
| 1485 SDL_GL_Lock(); | |
| 1486 SDL_GL_UpdateRects(numrects, rects); | |
| 1487 SDL_GL_Unlock(); | |
| 1488 } | |
| 1489 | |
| 1490 /* Update rects without state setting and changing (the caller is responsible for it) */ | |
| 1491 void SDL_GL_UpdateRects(int numrects, SDL_Rect *rects) | |
| 1492 { | |
| 1493 #ifdef HAVE_OPENGL | |
| 1494 SDL_VideoDevice *this = current_video; | |
| 1495 SDL_Rect update, tmp; | |
| 1496 int x, y, i; | |
| 1497 | |
| 1498 for ( i = 0; i < numrects; i++ ) | |
| 1499 { | |
| 1500 tmp.y = rects[i].y; | |
| 1501 tmp.h = rects[i].h; | |
| 1502 for ( y = 0; y <= rects[i].h / 256; y++ ) | |
| 1503 { | |
| 1504 tmp.x = rects[i].x; | |
| 1505 tmp.w = rects[i].w; | |
| 1506 for ( x = 0; x <= rects[i].w / 256; x++ ) | |
| 1507 { | |
| 1508 update.x = tmp.x; | |
| 1509 update.y = tmp.y; | |
| 1510 update.w = tmp.w; | |
| 1511 update.h = tmp.h; | |
| 1512 | |
| 1513 if ( update.w > 256 ) | |
| 1514 update.w = 256; | |
| 1515 | |
| 1516 if ( update.h > 256 ) | |
| 1517 update.h = 256; | |
| 1518 | |
| 1519 this->glFlush(); | |
| 1520 this->glTexSubImage2D( | |
| 1521 GL_TEXTURE_2D, | |
| 1522 0, | |
| 1523 0, | |
| 1524 0, | |
| 1525 update.w, | |
| 1526 update.h, | |
| 1527 this->is_32bit? GL_RGBA : GL_RGB, | |
| 1528 #ifdef GL_VERSION_1_2 | |
| 1529 this->is_32bit ? GL_UNSIGNED_BYTE : GL_UNSIGNED_SHORT_5_6_5, | |
| 1530 #else | |
| 1531 GL_UNSIGNED_BYTE, | |
| 1532 #endif | |
| 1533 (Uint8 *)this->screen->pixels + | |
| 1534 this->screen->format->BytesPerPixel * update.x + | |
| 1535 update.y * this->screen->pitch ); | |
| 1536 | |
| 1537 this->glFlush(); | |
| 1538 /* | |
| 1539 * Note the parens around the function name: | |
| 1540 * This is because some OpenGL implementations define glTexCoord etc | |
| 1541 * as macros, and we don't want them expanded here. | |
| 1542 */ | |
| 1543 this->glBegin(GL_TRIANGLE_STRIP); | |
| 1544 (this->glTexCoord2f)( 0.0, 0.0 ); | |
| 1545 (this->glVertex2i)( update.x, update.y ); | |
| 1546 (this->glTexCoord2f)( (float)(update.w / 256.0), 0.0 ); | |
| 1547 (this->glVertex2i)( update.x + update.w, update.y ); | |
| 1548 (this->glTexCoord2f)( 0.0, (float)(update.h / 256.0) ); | |
| 1549 (this->glVertex2i)( update.x, update.y + update.h ); | |
| 1550 (this->glTexCoord2f)( (float)(update.w / 256.0), (float)(update.h / 256.0) ); | |
| 1551 (this->glVertex2i)( update.x + update.w , update.y + update.h ); | |
| 1552 this->glEnd(); | |
| 1553 | |
| 1554 tmp.x += 256; | |
| 1555 tmp.w -= 256; | |
| 1556 } | |
| 1557 tmp.y += 256; | |
| 1558 tmp.h -= 256; | |
| 1559 } | |
| 1560 } | |
| 1561 #endif | |
| 1562 } | |
| 1563 | |
| 1564 /* Lock == save current state */ | |
| 1565 void SDL_GL_Lock() | |
| 1566 { | |
| 1567 #ifdef HAVE_OPENGL | |
| 1568 lock_count--; | |
| 1569 if (lock_count==-1) | |
| 1570 { | |
| 1571 SDL_VideoDevice *this = current_video; | |
| 1572 | |
| 1573 this->glPushAttrib( GL_ALL_ATTRIB_BITS ); /* TODO: narrow range of what is saved */ | |
|
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1574 #ifdef GL_CLIENT_PIXEL_STORE_BIT |
| 0 | 1575 this->glPushClientAttrib( GL_CLIENT_PIXEL_STORE_BIT ); |
|
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1576 #endif |
| 0 | 1577 |
| 1578 this->glEnable(GL_TEXTURE_2D); | |
| 1579 this->glEnable(GL_BLEND); | |
| 1580 this->glDisable(GL_FOG); | |
| 1581 this->glDisable(GL_ALPHA_TEST); | |
| 1582 this->glDisable(GL_DEPTH_TEST); | |
| 1583 this->glDisable(GL_SCISSOR_TEST); | |
| 1584 this->glDisable(GL_STENCIL_TEST); | |
| 1585 this->glDisable(GL_CULL_FACE); | |
| 1586 | |
| 1587 this->glBindTexture( GL_TEXTURE_2D, this->texture ); | |
| 1588 this->glTexEnvf( GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE ); | |
| 1589 this->glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST ); | |
| 1590 this->glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST ); | |
| 1591 this->glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT ); | |
| 1592 this->glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT ); | |
| 1593 | |
| 1594 this->glPixelStorei( GL_UNPACK_ROW_LENGTH, this->screen->pitch / this->screen->format->BytesPerPixel ); | |
| 1595 this->glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA); | |
| 1596 (this->glColor4f)(1.0, 1.0, 1.0, 1.0); /* Solaris workaround */ | |
| 1597 | |
| 1598 this->glViewport(0, 0, this->screen->w, this->screen->h); | |
| 1599 this->glMatrixMode(GL_PROJECTION); | |
| 1600 this->glPushMatrix(); | |
| 1601 this->glLoadIdentity(); | |
| 1602 | |
| 1603 this->glOrtho(0.0, (GLdouble) this->screen->w, (GLdouble) this->screen->h, 0.0, 0.0, 1.0); | |
| 1604 | |
| 1605 this->glMatrixMode(GL_MODELVIEW); | |
| 1606 this->glPushMatrix(); | |
| 1607 this->glLoadIdentity(); | |
| 1608 } | |
| 1609 #endif | |
| 1610 } | |
| 1611 | |
| 1612 /* Unlock == restore saved state */ | |
| 1613 void SDL_GL_Unlock() | |
| 1614 { | |
| 1615 #ifdef HAVE_OPENGL | |
| 1616 lock_count++; | |
| 1617 if (lock_count==0) | |
| 1618 { | |
| 1619 SDL_VideoDevice *this = current_video; | |
| 1620 | |
| 1621 this->glPopMatrix(); | |
| 1622 this->glMatrixMode(GL_PROJECTION); | |
| 1623 this->glPopMatrix(); | |
| 1624 | |
| 1625 this->glPopClientAttrib(); | |
| 1626 this->glPopAttrib(); | |
| 1627 } | |
| 1628 #endif | |
| 1629 } | |
| 1630 | |
| 1631 /* | |
| 1632 * Sets/Gets the title and icon text of the display window, if any. | |
| 1633 */ | |
| 1634 void SDL_WM_SetCaption (const char *title, const char *icon) | |
| 1635 { | |
| 1636 SDL_VideoDevice *video = current_video; | |
| 1637 SDL_VideoDevice *this = current_video; | |
| 1638 | |
|
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|
1639 if ( video ) { |
|
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1640 if ( title ) { |
|
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1641 if ( video->wm_title ) { |
|
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1642 free(video->wm_title); |
|
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1643 } |
|
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|
1644 video->wm_title = (char *)malloc(strlen(title)+1); |
|
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1645 if ( video->wm_title != NULL ) { |
|
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|
1646 strcpy(video->wm_title, title); |
|
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|
1647 } |
| 0 | 1648 } |
|
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1649 if ( icon ) { |
|
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1650 if ( video->wm_icon ) { |
|
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1651 free(video->wm_icon); |
|
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|
1652 } |
|
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|
1653 video->wm_icon = (char *)malloc(strlen(icon)+1); |
|
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|
1654 if ( video->wm_icon != NULL ) { |
|
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|
1655 strcpy(video->wm_icon, icon); |
|
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1656 } |
| 0 | 1657 } |
|
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1658 if ( (title || icon) && (video->SetCaption != NULL) ) { |
|
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1659 video->SetCaption(this, video->wm_title,video->wm_icon); |
| 0 | 1660 } |
| 1661 } | |
| 1662 } | |
| 1663 void SDL_WM_GetCaption (char **title, char **icon) | |
| 1664 { | |
|
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1665 SDL_VideoDevice *video = current_video; |
|
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1666 |
|
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1667 if ( video ) { |
|
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1668 if ( title ) { |
|
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1669 *title = video->wm_title; |
|
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1670 } |
|
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1671 if ( icon ) { |
|
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1672 *icon = video->wm_icon; |
|
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1673 } |
| 0 | 1674 } |
| 1675 } | |
| 1676 | |
|
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1677 /* Utility function used by SDL_WM_SetIcon(); |
|
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1678 * flags & 1 for color key, flags & 2 for alpha channel. */ |
|
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1679 static void CreateMaskFromColorKeyOrAlpha(SDL_Surface *icon, Uint8 *mask, int flags) |
| 0 | 1680 { |
| 1681 int x, y; | |
| 1682 Uint32 colorkey; | |
| 1683 #define SET_MASKBIT(icon, x, y, mask) \ | |
| 1684 mask[(y*((icon->w+7)/8))+(x/8)] &= ~(0x01<<(7-(x%8))) | |
| 1685 | |
| 1686 colorkey = icon->format->colorkey; | |
| 1687 switch (icon->format->BytesPerPixel) { | |
| 1688 case 1: { Uint8 *pixels; | |
| 1689 for ( y=0; y<icon->h; ++y ) { | |
| 1690 pixels = (Uint8 *)icon->pixels + y*icon->pitch; | |
| 1691 for ( x=0; x<icon->w; ++x ) { | |
| 1692 if ( *pixels++ == colorkey ) { | |
| 1693 SET_MASKBIT(icon, x, y, mask); | |
| 1694 } | |
| 1695 } | |
| 1696 } | |
| 1697 } | |
| 1698 break; | |
| 1699 | |
| 1700 case 2: { Uint16 *pixels; | |
| 1701 for ( y=0; y<icon->h; ++y ) { | |
| 1702 pixels = (Uint16 *)icon->pixels + | |
| 1703 y*icon->pitch/2; | |
| 1704 for ( x=0; x<icon->w; ++x ) { | |
|
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1705 if ( (flags & 1) && *pixels == colorkey ) { |
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1706 SET_MASKBIT(icon, x, y, mask); |
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1707 } else if((flags & 2) && (*pixels & icon->format->Amask) == 0) { |
| 0 | 1708 SET_MASKBIT(icon, x, y, mask); |
| 1709 } | |
|
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1710 pixels++; |
| 0 | 1711 } |
| 1712 } | |
| 1713 } | |
| 1714 break; | |
| 1715 | |
| 1716 case 4: { Uint32 *pixels; | |
| 1717 for ( y=0; y<icon->h; ++y ) { | |
| 1718 pixels = (Uint32 *)icon->pixels + | |
| 1719 y*icon->pitch/4; | |
| 1720 for ( x=0; x<icon->w; ++x ) { | |
|
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1721 if ( (flags & 1) && *pixels == colorkey ) { |
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1722 SET_MASKBIT(icon, x, y, mask); |
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1723 } else if((flags & 2) && (*pixels & icon->format->Amask) == 0) { |
| 0 | 1724 SET_MASKBIT(icon, x, y, mask); |
| 1725 } | |
|
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|
1726 pixels++; |
| 0 | 1727 } |
| 1728 } | |
| 1729 } | |
| 1730 break; | |
| 1731 } | |
| 1732 } | |
| 1733 | |
| 1734 /* | |
| 1735 * Sets the window manager icon for the display window. | |
| 1736 */ | |
| 1737 void SDL_WM_SetIcon (SDL_Surface *icon, Uint8 *mask) | |
| 1738 { | |
| 1739 SDL_VideoDevice *video = current_video; | |
| 1740 SDL_VideoDevice *this = current_video; | |
| 1741 | |
| 1742 if ( icon && video->SetIcon ) { | |
| 1743 /* Generate a mask if necessary, and create the icon! */ | |
| 1744 if ( mask == NULL ) { | |
| 1745 int mask_len = icon->h*(icon->w+7)/8; | |
|
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1746 int flags = 0; |
| 0 | 1747 mask = (Uint8 *)malloc(mask_len); |
| 1748 if ( mask == NULL ) { | |
| 1749 return; | |
| 1750 } | |
| 1751 memset(mask, ~0, mask_len); | |
|
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1752 if ( icon->flags & SDL_SRCCOLORKEY ) flags |= 1; |
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1753 if ( icon->flags & SDL_SRCALPHA ) flags |= 2; |
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1754 if( flags ) { |
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1755 CreateMaskFromColorKeyOrAlpha(icon, mask, flags); |
| 0 | 1756 } |
| 1757 video->SetIcon(video, icon, mask); | |
| 1758 free(mask); | |
| 1759 } else { | |
| 1760 video->SetIcon(this, icon, mask); | |
| 1761 } | |
| 1762 } | |
| 1763 } | |
| 1764 | |
| 1765 /* | |
| 1766 * Grab or ungrab the keyboard and mouse input. | |
| 1767 * This function returns the final grab mode after calling the | |
| 1768 * driver dependent function. | |
| 1769 */ | |
| 1770 static SDL_GrabMode SDL_WM_GrabInputRaw(SDL_GrabMode mode) | |
| 1771 { | |
| 1772 SDL_VideoDevice *video = current_video; | |
| 1773 SDL_VideoDevice *this = current_video; | |
| 1774 | |
| 1775 /* Only do something if we have support for grabs */ | |
| 1776 if ( video->GrabInput == NULL ) { | |
| 1777 return(video->input_grab); | |
| 1778 } | |
| 1779 | |
| 1780 /* If the final grab mode if off, only then do we actually grab */ | |
| 1781 #ifdef DEBUG_GRAB | |
| 1782 printf("SDL_WM_GrabInputRaw(%d) ... ", mode); | |
| 1783 #endif | |
| 1784 if ( mode == SDL_GRAB_OFF ) { | |
| 1785 if ( video->input_grab != SDL_GRAB_OFF ) { | |
| 1786 mode = video->GrabInput(this, mode); | |
| 1787 } | |
| 1788 } else { | |
| 1789 if ( video->input_grab == SDL_GRAB_OFF ) { | |
| 1790 mode = video->GrabInput(this, mode); | |
| 1791 } | |
| 1792 } | |
| 1793 if ( mode != video->input_grab ) { | |
| 1794 video->input_grab = mode; | |
| 1795 if ( video->CheckMouseMode ) { | |
| 1796 video->CheckMouseMode(this); | |
| 1797 } | |
| 1798 } | |
| 1799 #ifdef DEBUG_GRAB | |
| 1800 printf("Final mode %d\n", video->input_grab); | |
| 1801 #endif | |
| 1802 | |
| 1803 /* Return the final grab state */ | |
| 1804 if ( mode >= SDL_GRAB_FULLSCREEN ) { | |
| 1805 mode -= SDL_GRAB_FULLSCREEN; | |
| 1806 } | |
| 1807 return(mode); | |
| 1808 } | |
| 1809 SDL_GrabMode SDL_WM_GrabInput(SDL_GrabMode mode) | |
| 1810 { | |
| 1811 SDL_VideoDevice *video = current_video; | |
| 1812 | |
|
11
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1813 /* If the video isn't initialized yet, we can't do anything */ |
|
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1814 if ( ! video ) { |
|
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|
1815 return SDL_GRAB_OFF; |
|
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1816 } |
| 0 | 1817 |
| 1818 /* Return the current mode on query */ | |
| 1819 if ( mode == SDL_GRAB_QUERY ) { | |
| 1820 mode = video->input_grab; | |
| 1821 if ( mode >= SDL_GRAB_FULLSCREEN ) { | |
| 1822 mode -= SDL_GRAB_FULLSCREEN; | |
| 1823 } | |
| 1824 return(mode); | |
| 1825 } | |
| 1826 | |
| 1827 #ifdef DEBUG_GRAB | |
| 1828 printf("SDL_WM_GrabInput(%d) ... ", mode); | |
| 1829 #endif | |
| 1830 /* If the video surface is fullscreen, we always grab */ | |
| 1831 if ( mode >= SDL_GRAB_FULLSCREEN ) { | |
| 1832 mode -= SDL_GRAB_FULLSCREEN; | |
| 1833 } | |
| 1834 if ( SDL_VideoSurface && (SDL_VideoSurface->flags & SDL_FULLSCREEN) ) { | |
| 1835 mode += SDL_GRAB_FULLSCREEN; | |
| 1836 } | |
| 1837 return(SDL_WM_GrabInputRaw(mode)); | |
| 1838 } | |
| 1839 static SDL_GrabMode SDL_WM_GrabInputOff(void) | |
| 1840 { | |
| 1841 SDL_GrabMode mode; | |
| 1842 | |
| 1843 /* First query the current grab state */ | |
| 1844 mode = SDL_WM_GrabInput(SDL_GRAB_QUERY); | |
| 1845 | |
| 1846 /* Now explicitly turn off input grab */ | |
| 1847 SDL_WM_GrabInputRaw(SDL_GRAB_OFF); | |
| 1848 | |
| 1849 /* Return the old state */ | |
| 1850 return(mode); | |
| 1851 } | |
| 1852 | |
| 1853 /* | |
| 1854 * Iconify the window in window managed environments. | |
| 1855 * A successful iconification will result in an SDL_APPACTIVE loss event. | |
| 1856 */ | |
| 1857 int SDL_WM_IconifyWindow(void) | |
| 1858 { | |
| 1859 SDL_VideoDevice *video = current_video; | |
| 1860 SDL_VideoDevice *this = current_video; | |
| 1861 int retval; | |
| 1862 | |
| 1863 retval = 0; | |
| 1864 if ( video->IconifyWindow ) { | |
| 1865 retval = video->IconifyWindow(this); | |
| 1866 } | |
| 1867 return(retval); | |
| 1868 } | |
| 1869 | |
| 1870 /* | |
| 1871 * Toggle fullscreen mode | |
| 1872 */ | |
| 1873 int SDL_WM_ToggleFullScreen(SDL_Surface *surface) | |
| 1874 { | |
| 1875 SDL_VideoDevice *video = current_video; | |
| 1876 SDL_VideoDevice *this = current_video; | |
| 1877 int toggled; | |
| 1878 | |
| 1879 toggled = 0; | |
| 1880 if ( SDL_PublicSurface && (surface == SDL_PublicSurface) && | |
| 1881 video->ToggleFullScreen ) { | |
| 1882 if ( surface->flags & SDL_FULLSCREEN ) { | |
| 1883 toggled = video->ToggleFullScreen(this, 0); | |
| 1884 if ( toggled ) { | |
| 1885 SDL_VideoSurface->flags &= ~SDL_FULLSCREEN; | |
| 1886 SDL_PublicSurface->flags &= ~SDL_FULLSCREEN; | |
| 1887 } | |
| 1888 } else { | |
| 1889 toggled = video->ToggleFullScreen(this, 1); | |
| 1890 if ( toggled ) { | |
| 1891 SDL_VideoSurface->flags |= SDL_FULLSCREEN; | |
| 1892 SDL_PublicSurface->flags |= SDL_FULLSCREEN; | |
| 1893 } | |
| 1894 } | |
| 1895 /* Double-check the grab state inside SDL_WM_GrabInput() */ | |
| 1896 if ( toggled ) { | |
| 1897 SDL_WM_GrabInput(video->input_grab); | |
| 1898 } | |
| 1899 } | |
| 1900 return(toggled); | |
| 1901 } | |
| 1902 | |
| 1903 /* | |
| 1904 * Get some platform dependent window manager information | |
| 1905 */ | |
| 1906 int SDL_GetWMInfo (SDL_SysWMinfo *info) | |
| 1907 { | |
| 1908 SDL_VideoDevice *video = current_video; | |
| 1909 SDL_VideoDevice *this = current_video; | |
| 1910 | |
| 1911 if ( video && video->GetWMInfo ) { | |
| 1912 return(video->GetWMInfo(this, info)); | |
| 1913 } else { | |
| 1914 return(0); | |
| 1915 } | |
| 1916 } |