Mercurial > sdl-ios-xcode
annotate src/video/SDL_video.c @ 655:9c42ee1b7d77
Date: Thu, 24 Apr 2003 15:13:47 -0400
From: Shawn Kirst
Subject: SDL-1.2.5 patch to add ARB_multisample support
Attached is a patch I have written for SDL-1.2.5 that adds ARB_multisample
support. I only have the X11 and Win32 video patched. The Win32 patch also
adds support for WGL_ARB_pixel_format, as it was required for getting a
multisample capable pixel format. No additional GL header files are required
to compile on either platform (though you need an up-to-date glx.h for X11).
Requesting a multisample pixel format is made possible using
SDL_GL_SetAttribute with the two new SDL_GLattr's I've added
(SDL_GL_SAMPLE_BUFFERS and SDL_GL_SAMPLES). I've been using SDL in my
projects for quite a while now, so I am happy to contribute back to the
project. Now you can have and control FSAA in your SDL/GL apps at the
application level!
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Tue, 22 Jul 2003 15:10:06 +0000 |
| parents | fe445b59d307 |
| children | 864e2d2a9a55 |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 2 SDL - Simple DirectMedia Layer | |
|
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Updated copyright information for 2002
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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 | |
|
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.sample_buffers = 0; |
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237 video->gl_config.samples = 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 ) { | |
| 263 SDL_PixelFormat *vf = SDL_VideoSurface->format; | |
| 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 | |
| 362 int SDL_VideoModeOK (int width, int height, int bpp, Uint32 flags) | |
| 363 { | |
| 364 int table, b, i; | |
| 365 int supported; | |
| 366 SDL_PixelFormat format; | |
| 367 SDL_Rect **sizes; | |
| 368 | |
| 369 /* Currently 1 and 4 bpp are not supported */ | |
| 370 if ( bpp < 8 || bpp > 32 ) { | |
| 371 return(0); | |
| 372 } | |
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373 if ( (width <= 0) || (height <= 0) ) { |
| 0 | 374 return(0); |
| 375 } | |
| 376 | |
| 377 /* Search through the list valid of modes */ | |
| 378 memset(&format, 0, sizeof(format)); | |
| 379 supported = 0; | |
| 380 table = ((bpp+7)/8)-1; | |
| 381 SDL_closest_depths[table][0] = bpp; | |
| 382 SDL_closest_depths[table][7] = 0; | |
| 383 for ( b = 0; !supported && SDL_closest_depths[table][b]; ++b ) { | |
| 384 format.BitsPerPixel = SDL_closest_depths[table][b]; | |
| 385 sizes = SDL_ListModes(&format, flags); | |
| 386 if ( sizes == (SDL_Rect **)0 ) { | |
| 387 /* No sizes supported at this bit-depth */ | |
| 388 continue; | |
| 389 } else | |
| 390 #ifdef macintosh /* MPW optimization bug? */ | |
| 391 if ( (sizes == (SDL_Rect **)0xFFFFFFFF) || | |
| 392 #else | |
| 393 if ( (sizes == (SDL_Rect **)-1) || | |
| 394 #endif | |
| 395 current_video->handles_any_size ) { | |
| 396 /* Any size supported at this bit-depth */ | |
| 397 supported = 1; | |
| 398 continue; | |
| 399 } else | |
| 400 for ( i=0; sizes[i]; ++i ) { | |
| 401 if ((sizes[i]->w == width) && (sizes[i]->h == height)) { | |
| 402 supported = 1; | |
| 403 break; | |
| 404 } | |
| 405 } | |
| 406 } | |
| 407 if ( supported ) { | |
| 408 --b; | |
| 409 return(SDL_closest_depths[table][b]); | |
| 410 } else { | |
| 411 return(0); | |
| 412 } | |
| 413 } | |
| 414 | |
| 415 /* | |
| 416 * Get the closest non-emulated video mode to the one requested | |
| 417 */ | |
| 418 static int SDL_GetVideoMode (int *w, int *h, int *BitsPerPixel, Uint32 flags) | |
| 419 { | |
| 420 int table, b, i; | |
| 421 int supported; | |
| 422 int native_bpp; | |
| 423 SDL_PixelFormat format; | |
| 424 SDL_Rect **sizes; | |
| 425 | |
|
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426 /* Check parameters */ |
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427 if ( *BitsPerPixel < 8 || *BitsPerPixel > 32 ) { |
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428 SDL_SetError("Invalid bits per pixel (range is {8...32})"); |
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429 return(0); |
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430 } |
|
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431 if ((*w <= 0) || (*h <= 0)) { |
|
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432 SDL_SetError("Invalid width or height"); |
|
430
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433 return(0); |
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434 } |
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435 |
| 0 | 436 /* Try the original video mode, get the closest depth */ |
| 437 native_bpp = SDL_VideoModeOK(*w, *h, *BitsPerPixel, flags); | |
| 438 if ( native_bpp == *BitsPerPixel ) { | |
| 439 return(1); | |
| 440 } | |
| 441 if ( native_bpp > 0 ) { | |
| 442 *BitsPerPixel = native_bpp; | |
| 443 return(1); | |
| 444 } | |
| 445 | |
| 446 /* No exact size match at any depth, look for closest match */ | |
| 447 memset(&format, 0, sizeof(format)); | |
| 448 supported = 0; | |
| 449 table = ((*BitsPerPixel+7)/8)-1; | |
| 450 SDL_closest_depths[table][0] = *BitsPerPixel; | |
| 451 SDL_closest_depths[table][7] = SDL_VideoSurface->format->BitsPerPixel; | |
| 452 for ( b = 0; !supported && SDL_closest_depths[table][b]; ++b ) { | |
| 453 format.BitsPerPixel = SDL_closest_depths[table][b]; | |
| 454 sizes = SDL_ListModes(&format, flags); | |
| 455 if ( sizes == (SDL_Rect **)0 ) { | |
| 456 /* No sizes supported at this bit-depth */ | |
| 457 continue; | |
| 458 } | |
| 459 for ( i=0; sizes[i]; ++i ) { | |
| 460 if ((sizes[i]->w < *w) || (sizes[i]->h < *h)) { | |
| 461 if ( i > 0 ) { | |
| 462 --i; | |
| 463 *w = sizes[i]->w; | |
| 464 *h = sizes[i]->h; | |
| 465 *BitsPerPixel = SDL_closest_depths[table][b]; | |
| 466 supported = 1; | |
| 467 } else { | |
| 468 /* Largest mode too small... */; | |
| 469 } | |
| 470 break; | |
| 471 } | |
| 472 } | |
| 473 if ( (i > 0) && ! sizes[i] ) { | |
| 474 /* The smallest mode was larger than requested, OK */ | |
| 475 --i; | |
| 476 *w = sizes[i]->w; | |
| 477 *h = sizes[i]->h; | |
| 478 *BitsPerPixel = SDL_closest_depths[table][b]; | |
| 479 supported = 1; | |
| 480 } | |
| 481 } | |
| 482 if ( ! supported ) { | |
| 483 SDL_SetError("No video mode large enough for %dx%d", *w, *h); | |
| 484 } | |
| 485 return(supported); | |
| 486 } | |
| 487 | |
| 488 /* This should probably go somewhere else -- like SDL_surface.c */ | |
| 489 static void SDL_ClearSurface(SDL_Surface *surface) | |
| 490 { | |
| 491 Uint32 black; | |
| 492 | |
| 493 black = SDL_MapRGB(surface->format, 0, 0, 0); | |
| 494 SDL_FillRect(surface, NULL, black); | |
| 495 if ((surface->flags&SDL_HWSURFACE) && (surface->flags&SDL_DOUBLEBUF)) { | |
| 496 SDL_Flip(surface); | |
| 497 SDL_FillRect(surface, NULL, black); | |
| 498 } | |
| 499 SDL_Flip(surface); | |
| 500 } | |
| 501 | |
| 502 /* | |
| 503 * Create a shadow surface suitable for fooling the app. :-) | |
| 504 */ | |
| 505 static void SDL_CreateShadowSurface(int depth) | |
| 506 { | |
| 507 Uint32 Rmask, Gmask, Bmask; | |
| 508 | |
| 509 /* Allocate the shadow surface */ | |
| 510 if ( depth == (SDL_VideoSurface->format)->BitsPerPixel ) { | |
| 511 Rmask = (SDL_VideoSurface->format)->Rmask; | |
| 512 Gmask = (SDL_VideoSurface->format)->Gmask; | |
| 513 Bmask = (SDL_VideoSurface->format)->Bmask; | |
| 514 } else { | |
| 515 Rmask = Gmask = Bmask = 0; | |
| 516 } | |
| 517 SDL_ShadowSurface = SDL_CreateRGBSurface(SDL_SWSURFACE, | |
| 518 SDL_VideoSurface->w, SDL_VideoSurface->h, | |
| 519 depth, Rmask, Gmask, Bmask, 0); | |
| 520 if ( SDL_ShadowSurface == NULL ) { | |
| 521 return; | |
| 522 } | |
| 523 | |
| 524 /* 8-bit shadow surfaces report that they have exclusive palette */ | |
| 525 if ( SDL_ShadowSurface->format->palette ) { | |
| 526 SDL_ShadowSurface->flags |= SDL_HWPALETTE; | |
| 527 if ( depth == (SDL_VideoSurface->format)->BitsPerPixel ) { | |
| 528 memcpy(SDL_ShadowSurface->format->palette->colors, | |
| 529 SDL_VideoSurface->format->palette->colors, | |
| 530 SDL_VideoSurface->format->palette->ncolors* | |
| 531 sizeof(SDL_Color)); | |
| 532 } else { | |
| 533 SDL_DitherColors( | |
| 534 SDL_ShadowSurface->format->palette->colors, depth); | |
| 535 } | |
| 536 } | |
| 537 | |
| 538 /* If the video surface is resizable, the shadow should say so */ | |
| 539 if ( (SDL_VideoSurface->flags & SDL_RESIZABLE) == SDL_RESIZABLE ) { | |
| 540 SDL_ShadowSurface->flags |= SDL_RESIZABLE; | |
| 541 } | |
| 542 /* If the video surface has no frame, the shadow should say so */ | |
| 543 if ( (SDL_VideoSurface->flags & SDL_NOFRAME) == SDL_NOFRAME ) { | |
| 544 SDL_ShadowSurface->flags |= SDL_NOFRAME; | |
| 545 } | |
| 546 /* If the video surface is fullscreen, the shadow should say so */ | |
| 547 if ( (SDL_VideoSurface->flags & SDL_FULLSCREEN) == SDL_FULLSCREEN ) { | |
| 548 SDL_ShadowSurface->flags |= SDL_FULLSCREEN; | |
| 549 } | |
| 550 /* If the video surface is flippable, the shadow should say so */ | |
| 551 if ( (SDL_VideoSurface->flags & SDL_DOUBLEBUF) == SDL_DOUBLEBUF ) { | |
| 552 SDL_ShadowSurface->flags |= SDL_DOUBLEBUF; | |
| 553 } | |
| 554 return; | |
| 555 } | |
| 556 | |
| 557 /* | |
| 558 * Set the requested video mode, allocating a shadow buffer if necessary. | |
| 559 */ | |
| 560 SDL_Surface * SDL_SetVideoMode (int width, int height, int bpp, Uint32 flags) | |
| 561 { | |
| 562 SDL_VideoDevice *video, *this; | |
| 563 SDL_Surface *prev_mode, *mode; | |
| 564 int video_w; | |
| 565 int video_h; | |
| 566 int video_bpp; | |
| 567 int is_opengl; | |
| 568 SDL_GrabMode saved_grab; | |
| 569 | |
| 570 /* Start up the video driver, if necessary.. | |
| 571 WARNING: This is the only function protected this way! | |
| 572 */ | |
| 573 if ( ! current_video ) { | |
| 574 if ( SDL_Init(SDL_INIT_VIDEO|SDL_INIT_NOPARACHUTE) < 0 ) { | |
| 575 return(NULL); | |
| 576 } | |
| 577 } | |
| 578 this = video = current_video; | |
| 579 | |
| 580 /* Default to the current video bpp */ | |
| 581 if ( bpp == 0 ) { | |
| 582 flags |= SDL_ANYFORMAT; | |
| 583 bpp = SDL_VideoSurface->format->BitsPerPixel; | |
| 584 } | |
| 585 | |
| 586 /* Get a good video mode, the closest one possible */ | |
| 587 video_w = width; | |
| 588 video_h = height; | |
| 589 video_bpp = bpp; | |
| 590 if ( ! SDL_GetVideoMode(&video_w, &video_h, &video_bpp, flags) ) { | |
| 591 return(NULL); | |
| 592 } | |
| 593 | |
| 594 /* Check the requested flags */ | |
| 595 /* There's no palette in > 8 bits-per-pixel mode */ | |
| 596 if ( video_bpp > 8 ) { | |
| 597 flags &= ~SDL_HWPALETTE; | |
| 598 } | |
| 599 #if 0 | |
| 600 if ( (flags&SDL_FULLSCREEN) != SDL_FULLSCREEN ) { | |
| 601 /* There's no windowed double-buffering */ | |
| 602 flags &= ~SDL_DOUBLEBUF; | |
| 603 } | |
| 604 #endif | |
| 605 if ( (flags&SDL_DOUBLEBUF) == SDL_DOUBLEBUF ) { | |
| 606 /* Use hardware surfaces when double-buffering */ | |
| 607 flags |= SDL_HWSURFACE; | |
| 608 } | |
| 609 | |
| 610 is_opengl = ( ( flags & SDL_OPENGL ) == SDL_OPENGL ); | |
| 611 if ( is_opengl ) { | |
| 612 /* These flags are for 2D video modes only */ | |
| 613 flags &= ~(SDL_HWSURFACE|SDL_DOUBLEBUF); | |
| 614 } | |
| 615 | |
|
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616 /* Reset the keyboard here so event callbacks can run */ |
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617 SDL_ResetKeyboard(); |
|
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618 SDL_ResetMouse(); |
|
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619 |
| 0 | 620 /* Clean up any previous video mode */ |
| 621 if ( SDL_PublicSurface != NULL ) { | |
| 622 SDL_PublicSurface = NULL; | |
| 623 } | |
| 624 if ( SDL_ShadowSurface != NULL ) { | |
| 625 SDL_Surface *ready_to_go; | |
| 626 ready_to_go = SDL_ShadowSurface; | |
| 627 SDL_ShadowSurface = NULL; | |
| 628 SDL_FreeSurface(ready_to_go); | |
| 629 } | |
| 630 if ( video->physpal ) { | |
| 631 free(video->physpal->colors); | |
| 632 free(video->physpal); | |
| 633 video->physpal = NULL; | |
| 634 } | |
| 635 if( video->gammacols) { | |
| 636 free(video->gammacols); | |
| 637 video->gammacols = NULL; | |
| 638 } | |
| 639 | |
| 640 /* Save the previous grab state and turn off grab for mode switch */ | |
| 641 saved_grab = SDL_WM_GrabInputOff(); | |
| 642 | |
| 643 /* Try to set the video mode, along with offset and clipping */ | |
| 644 prev_mode = SDL_VideoSurface; | |
| 645 SDL_LockCursor(); | |
| 646 SDL_VideoSurface = NULL; /* In case it's freed by driver */ | |
| 647 mode = video->SetVideoMode(this, prev_mode,video_w,video_h,video_bpp,flags); | |
| 648 if ( mode ) { /* Prevent resize events from mode change */ | |
| 649 SDL_PrivateResize(mode->w, mode->h); | |
|
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650 |
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651 /* Sam - If we asked for OpenGL mode, and didn't get it, fail */ |
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652 if ( is_opengl && !(mode->flags & SDL_OPENGL) ) { |
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653 mode = NULL; |
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654 } |
| 0 | 655 } |
| 656 /* | |
| 657 * rcg11292000 | |
| 658 * If you try to set an SDL_OPENGL surface, and fail to find a | |
| 659 * matching visual, then the next call to SDL_SetVideoMode() | |
| 660 * will segfault, since we no longer point to a dummy surface, | |
| 661 * but rather NULL. | |
| 662 * Sam 11/29/00 | |
| 663 * WARNING, we need to make sure that the previous mode hasn't | |
| 664 * already been freed by the video driver. What do we do in | |
| 665 * that case? Should we call SDL_VideoInit() again? | |
| 666 */ | |
| 667 SDL_VideoSurface = (mode != NULL) ? mode : prev_mode; | |
| 668 | |
| 669 if ( (mode != NULL) && (!is_opengl) ) { | |
| 670 /* Sanity check */ | |
| 671 if ( (mode->w < width) || (mode->h < height) ) { | |
| 672 SDL_SetError("Video mode smaller than requested"); | |
| 673 return(NULL); | |
| 674 } | |
| 675 | |
| 676 /* If we have a palettized surface, create a default palette */ | |
| 677 if ( mode->format->palette ) { | |
| 678 SDL_PixelFormat *vf = mode->format; | |
| 679 SDL_DitherColors(vf->palette->colors, vf->BitsPerPixel); | |
| 680 video->SetColors(this, 0, vf->palette->ncolors, | |
| 681 vf->palette->colors); | |
| 682 } | |
| 683 | |
| 684 /* Clear the surface to black */ | |
| 685 video->offset_x = 0; | |
| 686 video->offset_y = 0; | |
| 687 mode->offset = 0; | |
| 688 SDL_SetClipRect(mode, NULL); | |
| 689 SDL_ClearSurface(mode); | |
| 690 | |
| 691 /* Now adjust the offsets to match the desired mode */ | |
| 692 video->offset_x = (mode->w-width)/2; | |
| 693 video->offset_y = (mode->h-height)/2; | |
| 694 mode->offset = video->offset_y*mode->pitch + | |
| 695 video->offset_x*mode->format->BytesPerPixel; | |
| 696 #ifdef DEBUG_VIDEO | |
| 697 fprintf(stderr, | |
| 698 "Requested mode: %dx%dx%d, obtained mode %dx%dx%d (offset %d)\n", | |
| 699 width, height, bpp, | |
| 700 mode->w, mode->h, mode->format->BitsPerPixel, mode->offset); | |
| 701 #endif | |
| 702 mode->w = width; | |
| 703 mode->h = height; | |
| 704 SDL_SetClipRect(mode, NULL); | |
| 705 } | |
| 706 SDL_ResetCursor(); | |
| 707 SDL_UnlockCursor(); | |
| 708 | |
| 709 /* If we failed setting a video mode, return NULL... (Uh Oh!) */ | |
| 710 if ( mode == NULL ) { | |
| 711 return(NULL); | |
| 712 } | |
| 713 | |
| 714 /* If there is no window manager, set the SDL_NOFRAME flag */ | |
| 715 if ( ! video->info.wm_available ) { | |
| 716 mode->flags |= SDL_NOFRAME; | |
| 717 } | |
| 718 | |
| 719 /* Reset the mouse cursor and grab for new video mode */ | |
| 720 SDL_SetCursor(NULL); | |
| 721 if ( video->UpdateMouse ) { | |
| 722 video->UpdateMouse(this); | |
| 723 } | |
| 724 SDL_WM_GrabInput(saved_grab); | |
| 725 SDL_GetRelativeMouseState(NULL, NULL); /* Clear first large delta */ | |
| 726 | |
|
650
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727 #ifdef HAVE_OPENGL |
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728 /* Load GL symbols (before MakeCurrent, where we need glGetString). */ |
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729 if ( flags & (SDL_OPENGL | SDL_OPENGLBLIT) ) { |
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730 #define SDL_PROC(ret,func,params) \ |
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731 do { \ |
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732 video->func = SDL_GL_GetProcAddress(#func); \ |
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733 if ( ! video->func ) { \ |
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734 SDL_SetError("Couldn't load GL function: %s\n", #func); \ |
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735 return(NULL); \ |
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736 } \ |
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737 } while ( 0 ); |
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738 #include "SDL_glfuncs.h" |
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739 #undef SDL_PROC |
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740 } |
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741 #endif |
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742 |
| 0 | 743 /* If we're running OpenGL, make the context current */ |
| 744 if ( (video->screen->flags & SDL_OPENGL) && | |
| 745 video->GL_MakeCurrent ) { | |
| 746 if ( video->GL_MakeCurrent(this) < 0 ) { | |
| 747 return(NULL); | |
| 748 } | |
| 749 } | |
| 750 | |
| 751 /* Set up a fake SDL surface for OpenGL "blitting" */ | |
| 752 if ( (flags & SDL_OPENGLBLIT) == SDL_OPENGLBLIT ) { | |
| 753 /* Load GL functions for performing the texture updates */ | |
| 754 #ifdef HAVE_OPENGL | |
| 755 | |
| 756 /* Create a software surface for blitting */ | |
| 757 #ifdef GL_VERSION_1_2 | |
| 758 /* If the implementation either supports the packed pixels | |
| 759 extension, or implements the core OpenGL 1.2 API, it will | |
| 760 support the GL_UNSIGNED_SHORT_5_6_5 texture format. | |
| 761 */ | |
| 762 if ( (bpp == 16) && | |
|
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763 (strstr((const char *)video->glGetString(GL_EXTENSIONS), "GL_EXT_packed_pixels") || |
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764 (atof((const char *)video->glGetString(GL_VERSION)) >= 1.2f)) |
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765 ) { |
| 0 | 766 video->is_32bit = 0; |
| 767 SDL_VideoSurface = SDL_CreateRGBSurface( | |
| 768 flags, | |
| 769 width, | |
| 770 height, | |
| 771 16, | |
| 772 31 << 11, | |
| 773 63 << 5, | |
| 774 31, | |
| 775 0 | |
| 776 ); | |
| 777 } | |
| 778 else | |
| 779 #endif /* OpenGL 1.2 */ | |
| 780 { | |
| 781 video->is_32bit = 1; | |
| 782 SDL_VideoSurface = SDL_CreateRGBSurface( | |
| 783 flags, | |
| 784 width, | |
| 785 height, | |
| 786 32, | |
| 787 #if SDL_BYTEORDER == SDL_LIL_ENDIAN | |
| 788 0x000000FF, | |
| 789 0x0000FF00, | |
| 790 0x00FF0000, | |
| 791 0xFF000000 | |
| 792 #else | |
| 793 0xFF000000, | |
| 794 0x00FF0000, | |
| 795 0x0000FF00, | |
| 796 0x000000FF | |
| 797 #endif | |
| 798 ); | |
| 799 } | |
| 800 if ( ! SDL_VideoSurface ) { | |
| 801 return(NULL); | |
| 802 } | |
| 803 SDL_VideoSurface->flags = mode->flags | SDL_OPENGLBLIT; | |
| 804 | |
| 805 /* Free the original video mode surface (is this safe?) */ | |
| 806 SDL_FreeSurface(mode); | |
| 807 | |
| 808 /* Set the surface completely opaque & white by default */ | |
| 809 memset( SDL_VideoSurface->pixels, 255, SDL_VideoSurface->h * SDL_VideoSurface->pitch ); | |
| 810 video->glGenTextures( 1, &video->texture ); | |
| 811 video->glBindTexture( GL_TEXTURE_2D, video->texture ); | |
| 812 video->glTexImage2D( | |
| 813 GL_TEXTURE_2D, | |
| 814 0, | |
| 815 video->is_32bit ? GL_RGBA : GL_RGB, | |
| 816 256, | |
| 817 256, | |
| 818 0, | |
| 819 video->is_32bit ? GL_RGBA : GL_RGB, | |
| 820 #ifdef GL_VERSION_1_2 | |
| 821 video->is_32bit ? GL_UNSIGNED_BYTE : GL_UNSIGNED_SHORT_5_6_5, | |
| 822 #else | |
| 823 GL_UNSIGNED_BYTE, | |
| 824 #endif | |
| 825 NULL); | |
| 826 | |
| 827 video->UpdateRects = SDL_GL_UpdateRectsLock; | |
| 828 #else | |
| 829 SDL_SetError("Somebody forgot to #define HAVE_OPENGL"); | |
| 830 return(NULL); | |
| 831 #endif | |
| 832 } | |
| 833 | |
| 834 /* Create a shadow surface if necessary */ | |
| 835 /* There are three conditions under which we create a shadow surface: | |
| 836 1. We need a particular bits-per-pixel that we didn't get. | |
| 837 2. We need a hardware palette and didn't get one. | |
| 838 3. We need a software surface and got a hardware surface. | |
| 839 */ | |
| 840 if ( !(SDL_VideoSurface->flags & SDL_OPENGL) && | |
| 841 ( | |
| 842 ( !(flags&SDL_ANYFORMAT) && | |
| 843 (SDL_VideoSurface->format->BitsPerPixel != bpp)) || | |
| 844 ( (flags&SDL_HWPALETTE) && | |
| 845 !(SDL_VideoSurface->flags&SDL_HWPALETTE)) || | |
| 846 /* If the surface is in hardware, video writes are visible | |
| 847 as soon as they are performed, so we need to buffer them | |
| 848 */ | |
| 849 ( ((flags&SDL_HWSURFACE) == SDL_SWSURFACE) && | |
|
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850 (SDL_VideoSurface->flags&SDL_HWSURFACE)) || |
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851 ( (flags&SDL_DOUBLEBUF) && |
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852 (SDL_VideoSurface->flags&SDL_HWSURFACE) && |
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853 !(SDL_VideoSurface->flags&SDL_DOUBLEBUF)) |
| 0 | 854 ) ) { |
| 855 SDL_CreateShadowSurface(bpp); | |
| 856 if ( SDL_ShadowSurface == NULL ) { | |
| 857 SDL_SetError("Couldn't create shadow surface"); | |
| 858 return(NULL); | |
| 859 } | |
| 860 SDL_PublicSurface = SDL_ShadowSurface; | |
| 861 } else { | |
| 862 SDL_PublicSurface = SDL_VideoSurface; | |
| 863 } | |
| 864 video->info.vfmt = SDL_VideoSurface->format; | |
| 865 | |
| 866 /* We're done! */ | |
| 867 return(SDL_PublicSurface); | |
| 868 } | |
| 869 | |
| 870 /* | |
| 871 * Convert a surface into the video pixel format. | |
| 872 */ | |
| 873 SDL_Surface * SDL_DisplayFormat (SDL_Surface *surface) | |
| 874 { | |
| 875 Uint32 flags; | |
| 876 | |
| 877 if ( ! SDL_PublicSurface ) { | |
| 878 SDL_SetError("No video mode has been set"); | |
| 879 return(NULL); | |
| 880 } | |
| 881 /* Set the flags appropriate for copying to display surface */ | |
|
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882 if (((SDL_PublicSurface->flags&SDL_HWSURFACE) == SDL_HWSURFACE) && current_video->info.blit_hw) |
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883 flags = SDL_HWSURFACE; |
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884 else |
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885 flags = SDL_SWSURFACE; |
| 0 | 886 #ifdef AUTORLE_DISPLAYFORMAT |
| 887 flags |= (surface->flags & (SDL_SRCCOLORKEY|SDL_SRCALPHA)); | |
| 888 flags |= SDL_RLEACCELOK; | |
| 889 #else | |
| 890 flags |= surface->flags & (SDL_SRCCOLORKEY|SDL_SRCALPHA|SDL_RLEACCELOK); | |
| 891 #endif | |
| 892 return(SDL_ConvertSurface(surface, SDL_PublicSurface->format, flags)); | |
| 893 } | |
| 894 | |
| 895 /* | |
| 896 * Convert a surface into a format that's suitable for blitting to | |
| 897 * the screen, but including an alpha channel. | |
| 898 */ | |
| 899 SDL_Surface *SDL_DisplayFormatAlpha(SDL_Surface *surface) | |
| 900 { | |
| 901 SDL_PixelFormat *vf; | |
| 902 SDL_PixelFormat *format; | |
| 903 SDL_Surface *converted; | |
| 904 Uint32 flags; | |
| 905 /* default to ARGB8888 */ | |
| 906 Uint32 amask = 0xff000000; | |
| 907 Uint32 rmask = 0x00ff0000; | |
| 908 Uint32 gmask = 0x0000ff00; | |
| 909 Uint32 bmask = 0x000000ff; | |
| 910 | |
| 911 if ( ! SDL_PublicSurface ) { | |
| 912 SDL_SetError("No video mode has been set"); | |
| 913 return(NULL); | |
| 914 } | |
| 915 vf = SDL_PublicSurface->format; | |
| 916 | |
| 917 switch(vf->BytesPerPixel) { | |
| 918 case 2: | |
| 919 /* For XGY5[56]5, use, AXGY8888, where {X, Y} = {R, B}. | |
| 920 For anything else (like ARGB4444) it doesn't matter | |
| 921 since we have no special code for it anyway */ | |
| 922 if ( (vf->Rmask == 0x1f) && | |
| 923 (vf->Bmask == 0xf800 || vf->Bmask == 0x7c00)) { | |
| 924 rmask = 0xff; | |
| 925 bmask = 0xff0000; | |
| 926 } | |
| 927 break; | |
| 928 | |
| 929 case 3: | |
| 930 case 4: | |
| 931 /* Keep the video format, as long as the high 8 bits are | |
| 932 unused or alpha */ | |
| 933 if ( (vf->Rmask == 0xff) && (vf->Bmask == 0xff0000) ) { | |
| 934 rmask = 0xff; | |
| 935 bmask = 0xff0000; | |
| 936 } | |
| 937 break; | |
| 938 | |
| 939 default: | |
| 940 /* We have no other optimised formats right now. When/if a new | |
| 941 optimised alpha format is written, add the converter here */ | |
| 942 break; | |
| 943 } | |
| 944 format = SDL_AllocFormat(32, rmask, gmask, bmask, amask); | |
| 945 flags = SDL_PublicSurface->flags & SDL_HWSURFACE; | |
| 946 flags |= surface->flags & (SDL_SRCALPHA | SDL_RLEACCELOK); | |
| 947 converted = SDL_ConvertSurface(surface, format, flags); | |
| 948 SDL_FreeFormat(format); | |
| 949 return(converted); | |
| 950 } | |
| 951 | |
| 952 /* | |
| 953 * Update a specific portion of the physical screen | |
| 954 */ | |
| 955 void SDL_UpdateRect(SDL_Surface *screen, Sint32 x, Sint32 y, Uint32 w, Uint32 h) | |
| 956 { | |
| 957 if ( screen ) { | |
| 958 SDL_Rect rect; | |
| 959 | |
| 960 /* Perform some checking */ | |
| 961 if ( w == 0 ) | |
| 962 w = screen->w; | |
| 963 if ( h == 0 ) | |
| 964 h = screen->h; | |
| 965 if ( (int)(x+w) > screen->w ) | |
| 966 return; | |
| 967 if ( (int)(y+h) > screen->h ) | |
| 968 return; | |
| 969 | |
| 970 /* Fill the rectangle */ | |
| 971 rect.x = x; | |
| 972 rect.y = y; | |
| 973 rect.w = w; | |
| 974 rect.h = h; | |
| 975 SDL_UpdateRects(screen, 1, &rect); | |
| 976 } | |
| 977 } | |
| 978 void SDL_UpdateRects (SDL_Surface *screen, int numrects, SDL_Rect *rects) | |
| 979 { | |
| 980 int i; | |
| 981 SDL_VideoDevice *video = current_video; | |
| 982 SDL_VideoDevice *this = current_video; | |
| 983 | |
| 984 if ( screen == SDL_ShadowSurface ) { | |
| 985 /* Blit the shadow surface using saved mapping */ | |
|
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986 SDL_Palette *pal = screen->format->palette; |
| 0 | 987 SDL_Color *saved_colors = NULL; |
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988 if ( pal && !(SDL_VideoSurface->flags & SDL_HWPALETTE) ) { |
| 0 | 989 /* simulated 8bpp, use correct physical palette */ |
| 990 saved_colors = pal->colors; | |
| 991 if ( video->gammacols ) { | |
| 992 /* gamma-corrected palette */ | |
| 993 pal->colors = video->gammacols; | |
| 994 } else if ( video->physpal ) { | |
| 995 /* physical palette different from logical */ | |
| 996 pal->colors = video->physpal->colors; | |
| 997 } | |
| 998 } | |
| 999 if ( SHOULD_DRAWCURSOR(SDL_cursorstate) ) { | |
| 1000 SDL_LockCursor(); | |
| 1001 SDL_DrawCursor(SDL_ShadowSurface); | |
| 1002 for ( i=0; i<numrects; ++i ) { | |
| 1003 SDL_LowerBlit(SDL_ShadowSurface, &rects[i], | |
| 1004 SDL_VideoSurface, &rects[i]); | |
| 1005 } | |
| 1006 SDL_EraseCursor(SDL_ShadowSurface); | |
| 1007 SDL_UnlockCursor(); | |
| 1008 } else { | |
| 1009 for ( i=0; i<numrects; ++i ) { | |
| 1010 SDL_LowerBlit(SDL_ShadowSurface, &rects[i], | |
| 1011 SDL_VideoSurface, &rects[i]); | |
| 1012 } | |
| 1013 } | |
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1014 if ( saved_colors ) { |
| 0 | 1015 pal->colors = saved_colors; |
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1016 } |
| 0 | 1017 |
| 1018 /* Fall through to video surface update */ | |
| 1019 screen = SDL_VideoSurface; | |
| 1020 } | |
| 1021 if ( screen == SDL_VideoSurface ) { | |
| 1022 /* Update the video surface */ | |
| 1023 if ( screen->offset ) { | |
| 1024 for ( i=0; i<numrects; ++i ) { | |
| 1025 rects[i].x += video->offset_x; | |
| 1026 rects[i].y += video->offset_y; | |
| 1027 } | |
| 1028 video->UpdateRects(this, numrects, rects); | |
| 1029 for ( i=0; i<numrects; ++i ) { | |
| 1030 rects[i].x -= video->offset_x; | |
| 1031 rects[i].y -= video->offset_y; | |
| 1032 } | |
| 1033 } else { | |
| 1034 video->UpdateRects(this, numrects, rects); | |
| 1035 } | |
| 1036 } | |
| 1037 } | |
| 1038 | |
| 1039 /* | |
| 1040 * Performs hardware double buffering, if possible, or a full update if not. | |
| 1041 */ | |
| 1042 int SDL_Flip(SDL_Surface *screen) | |
| 1043 { | |
| 1044 SDL_VideoDevice *video = current_video; | |
| 1045 /* Copy the shadow surface to the video surface */ | |
| 1046 if ( screen == SDL_ShadowSurface ) { | |
| 1047 SDL_Rect rect; | |
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1048 SDL_Palette *pal = screen->format->palette; |
| 0 | 1049 SDL_Color *saved_colors = NULL; |
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1050 if ( pal && !(SDL_VideoSurface->flags & SDL_HWPALETTE) ) { |
| 0 | 1051 /* simulated 8bpp, use correct physical palette */ |
| 1052 saved_colors = pal->colors; | |
| 1053 if ( video->gammacols ) { | |
| 1054 /* gamma-corrected palette */ | |
| 1055 pal->colors = video->gammacols; | |
| 1056 } else if ( video->physpal ) { | |
| 1057 /* physical palette different from logical */ | |
| 1058 pal->colors = video->physpal->colors; | |
| 1059 } | |
| 1060 } | |
| 1061 | |
| 1062 rect.x = 0; | |
| 1063 rect.y = 0; | |
| 1064 rect.w = screen->w; | |
| 1065 rect.h = screen->h; | |
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1066 if ( SHOULD_DRAWCURSOR(SDL_cursorstate) ) { |
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1067 SDL_LockCursor(); |
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1068 SDL_DrawCursor(SDL_ShadowSurface); |
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1069 SDL_LowerBlit(SDL_ShadowSurface, &rect, |
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1070 SDL_VideoSurface, &rect); |
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1071 SDL_EraseCursor(SDL_ShadowSurface); |
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1072 SDL_UnlockCursor(); |
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1073 } else { |
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1074 SDL_LowerBlit(SDL_ShadowSurface, &rect, |
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1075 SDL_VideoSurface, &rect); |
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1076 } |
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1077 if ( saved_colors ) { |
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1078 pal->colors = saved_colors; |
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1079 } |
| 0 | 1080 |
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1081 /* Fall through to video surface update */ |
| 0 | 1082 screen = SDL_VideoSurface; |
| 1083 } | |
| 1084 if ( (screen->flags & SDL_DOUBLEBUF) == SDL_DOUBLEBUF ) { | |
| 1085 SDL_VideoDevice *this = current_video; | |
| 1086 return(video->FlipHWSurface(this, SDL_VideoSurface)); | |
| 1087 } else { | |
| 1088 SDL_UpdateRect(screen, 0, 0, 0, 0); | |
| 1089 } | |
| 1090 return(0); | |
| 1091 } | |
| 1092 | |
| 1093 static void SetPalette_logical(SDL_Surface *screen, SDL_Color *colors, | |
| 1094 int firstcolor, int ncolors) | |
| 1095 { | |
| 1096 SDL_Palette *pal = screen->format->palette; | |
| 1097 SDL_Palette *vidpal; | |
| 1098 | |
| 1099 if ( colors != (pal->colors + firstcolor) ) { | |
| 1100 memcpy(pal->colors + firstcolor, colors, | |
| 1101 ncolors * sizeof(*colors)); | |
| 1102 } | |
| 1103 | |
| 1104 vidpal = SDL_VideoSurface->format->palette; | |
| 1105 if ( (screen == SDL_ShadowSurface) && vidpal ) { | |
| 1106 /* | |
| 1107 * This is a shadow surface, and the physical | |
| 1108 * framebuffer is also indexed. Propagate the | |
| 1109 * changes to its logical palette so that | |
| 1110 * updates are always identity blits | |
| 1111 */ | |
| 1112 memcpy(vidpal->colors + firstcolor, colors, | |
| 1113 ncolors * sizeof(*colors)); | |
| 1114 } | |
| 1115 SDL_FormatChanged(screen); | |
| 1116 } | |
| 1117 | |
| 1118 static int SetPalette_physical(SDL_Surface *screen, | |
| 1119 SDL_Color *colors, int firstcolor, int ncolors) | |
| 1120 { | |
| 1121 SDL_VideoDevice *video = current_video; | |
| 1122 int gotall = 1; | |
| 1123 | |
| 1124 if ( video->physpal ) { | |
| 1125 /* We need to copy the new colors, since we haven't | |
| 1126 * already done the copy in the logical set above. | |
| 1127 */ | |
| 1128 memcpy(video->physpal->colors + firstcolor, | |
| 1129 colors, ncolors * sizeof(*colors)); | |
| 1130 } | |
| 1131 if ( screen == SDL_ShadowSurface ) { | |
| 1132 if ( SDL_VideoSurface->flags & SDL_HWPALETTE ) { | |
| 1133 /* | |
| 1134 * The real screen is also indexed - set its physical | |
| 1135 * palette. The physical palette does not include the | |
| 1136 * gamma modification, we apply it directly instead, | |
| 1137 * but this only happens if we have hardware palette. | |
| 1138 */ | |
| 1139 screen = SDL_VideoSurface; | |
| 1140 } else { | |
| 1141 /* | |
| 1142 * The video surface is not indexed - invalidate any | |
| 1143 * active shadow-to-video blit mappings. | |
| 1144 */ | |
| 1145 if ( screen->map->dst == SDL_VideoSurface ) { | |
| 1146 SDL_InvalidateMap(screen->map); | |
| 1147 } | |
| 1148 if ( video->gamma ) { | |
| 1149 if( ! video->gammacols ) { | |
| 1150 SDL_Palette *pp = video->physpal; | |
| 1151 if(!pp) | |
| 1152 pp = screen->format->palette; | |
| 1153 video->gammacols = malloc(pp->ncolors | |
| 1154 * sizeof(SDL_Color)); | |
| 1155 SDL_ApplyGamma(video->gamma, | |
| 1156 pp->colors, | |
| 1157 video->gammacols, | |
| 1158 pp->ncolors); | |
| 1159 } else { | |
| 1160 SDL_ApplyGamma(video->gamma, colors, | |
| 1161 video->gammacols | |
| 1162 + firstcolor, | |
| 1163 ncolors); | |
| 1164 } | |
| 1165 } | |
| 1166 SDL_UpdateRect(screen, 0, 0, 0, 0); | |
| 1167 } | |
| 1168 } | |
| 1169 | |
| 1170 if ( screen == SDL_VideoSurface ) { | |
| 1171 SDL_Color gcolors[256]; | |
| 1172 | |
| 1173 if ( video->gamma ) { | |
| 1174 SDL_ApplyGamma(video->gamma, colors, gcolors, ncolors); | |
| 1175 colors = gcolors; | |
| 1176 } | |
| 1177 gotall = video->SetColors(video, firstcolor, ncolors, colors); | |
| 1178 if ( ! gotall ) { | |
| 1179 /* The video flags shouldn't have SDL_HWPALETTE, and | |
| 1180 the video driver is responsible for copying back the | |
| 1181 correct colors into the video surface palette. | |
| 1182 */ | |
| 1183 ; | |
| 1184 } | |
| 1185 SDL_CursorPaletteChanged(); | |
| 1186 } | |
| 1187 return gotall; | |
| 1188 } | |
| 1189 | |
| 1190 /* | |
| 1191 * Set the physical and/or logical colormap of a surface: | |
| 1192 * Only the screen has a physical colormap. It determines what is actually | |
| 1193 * sent to the display. | |
| 1194 * The logical colormap is used to map blits to/from the surface. | |
| 1195 * 'which' is one or both of SDL_LOGPAL, SDL_PHYSPAL | |
| 1196 * | |
| 1197 * Return nonzero if all colours were set as requested, or 0 otherwise. | |
| 1198 */ | |
| 1199 int SDL_SetPalette(SDL_Surface *screen, int which, | |
| 1200 SDL_Color *colors, int firstcolor, int ncolors) | |
| 1201 { | |
| 1202 SDL_Palette *pal; | |
| 1203 int gotall; | |
| 1204 int palsize; | |
| 1205 | |
| 34 | 1206 if ( ! current_video ) { |
| 1207 return 0; | |
| 1208 } | |
| 0 | 1209 if ( screen != SDL_PublicSurface ) { |
| 1210 /* only screens have physical palettes */ | |
| 1211 which &= ~SDL_PHYSPAL; | |
| 1212 } else if( (screen->flags & SDL_HWPALETTE) != SDL_HWPALETTE ) { | |
| 1213 /* hardware palettes required for split colormaps */ | |
| 1214 which |= SDL_PHYSPAL | SDL_LOGPAL; | |
| 1215 } | |
| 1216 | |
| 1217 /* Verify the parameters */ | |
| 1218 pal = screen->format->palette; | |
| 1219 if( !pal ) { | |
| 1220 return 0; /* not a palettized surface */ | |
| 1221 } | |
| 1222 gotall = 1; | |
| 1223 palsize = 1 << screen->format->BitsPerPixel; | |
| 1224 if ( ncolors > (palsize - firstcolor) ) { | |
| 1225 ncolors = (palsize - firstcolor); | |
| 1226 gotall = 0; | |
| 1227 } | |
| 1228 | |
| 1229 if ( which & SDL_LOGPAL ) { | |
| 1230 /* | |
| 1231 * Logical palette change: The actual screen isn't affected, | |
| 1232 * but the internal colormap is altered so that the | |
| 1233 * interpretation of the pixel values (for blits etc) is | |
| 1234 * changed. | |
| 1235 */ | |
| 1236 SetPalette_logical(screen, colors, firstcolor, ncolors); | |
| 1237 } | |
| 1238 if ( which & SDL_PHYSPAL ) { | |
| 1239 SDL_VideoDevice *video = current_video; | |
| 1240 /* | |
| 1241 * Physical palette change: This doesn't affect the | |
| 1242 * program's idea of what the screen looks like, but changes | |
| 1243 * its actual appearance. | |
| 1244 */ | |
| 1245 if(!video) | |
| 1246 return gotall; /* video not yet initialized */ | |
| 1247 if(!video->physpal && !(which & SDL_LOGPAL) ) { | |
| 1248 /* Lazy physical palette allocation */ | |
| 1249 int size; | |
| 1250 SDL_Palette *pp = malloc(sizeof(*pp)); | |
| 1251 current_video->physpal = pp; | |
| 1252 pp->ncolors = pal->ncolors; | |
| 1253 size = pp->ncolors * sizeof(SDL_Color); | |
| 1254 pp->colors = malloc(size); | |
| 1255 memcpy(pp->colors, pal->colors, size); | |
| 1256 } | |
| 1257 if ( ! SetPalette_physical(screen, | |
| 1258 colors, firstcolor, ncolors) ) { | |
| 1259 gotall = 0; | |
| 1260 } | |
| 1261 } | |
| 1262 return gotall; | |
| 1263 } | |
| 1264 | |
| 1265 int SDL_SetColors(SDL_Surface *screen, SDL_Color *colors, int firstcolor, | |
| 1266 int ncolors) | |
| 1267 { | |
| 1268 return SDL_SetPalette(screen, SDL_LOGPAL | SDL_PHYSPAL, | |
| 1269 colors, firstcolor, ncolors); | |
| 1270 } | |
| 1271 | |
| 1272 /* | |
| 1273 * Clean up the video subsystem | |
| 1274 */ | |
| 1275 void SDL_VideoQuit (void) | |
| 1276 { | |
| 1277 SDL_Surface *ready_to_go; | |
| 1278 | |
| 1279 if ( current_video ) { | |
| 1280 SDL_VideoDevice *video = current_video; | |
| 1281 SDL_VideoDevice *this = current_video; | |
| 1282 | |
| 1283 /* Halt event processing before doing anything else */ | |
| 1284 SDL_StopEventLoop(); | |
| 1285 | |
| 1286 /* Clean up allocated window manager items */ | |
| 1287 if ( SDL_PublicSurface ) { | |
| 1288 SDL_PublicSurface = NULL; | |
| 1289 } | |
| 1290 SDL_CursorQuit(); | |
| 1291 | |
| 1292 /* Just in case... */ | |
| 1293 SDL_WM_GrabInputOff(); | |
| 1294 | |
| 1295 /* Clean up the system video */ | |
| 1296 video->VideoQuit(this); | |
| 1297 | |
| 1298 /* Free any lingering surfaces */ | |
| 1299 ready_to_go = SDL_ShadowSurface; | |
| 1300 SDL_ShadowSurface = NULL; | |
| 1301 SDL_FreeSurface(ready_to_go); | |
| 1302 if ( SDL_VideoSurface != NULL ) { | |
| 1303 ready_to_go = SDL_VideoSurface; | |
| 1304 SDL_VideoSurface = NULL; | |
| 1305 SDL_FreeSurface(ready_to_go); | |
| 1306 } | |
| 1307 SDL_PublicSurface = NULL; | |
| 1308 | |
| 1309 /* Clean up miscellaneous memory */ | |
| 1310 if ( video->physpal ) { | |
| 1311 free(video->physpal->colors); | |
| 1312 free(video->physpal); | |
| 1313 video->physpal = NULL; | |
| 1314 } | |
| 1315 if ( video->gammacols ) { | |
| 1316 free(video->gammacols); | |
| 1317 video->gammacols = NULL; | |
| 1318 } | |
| 1319 if ( video->gamma ) { | |
| 1320 free(video->gamma); | |
| 1321 video->gamma = NULL; | |
| 1322 } | |
|
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1323 if ( video->wm_title != NULL ) { |
|
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|
1324 free(video->wm_title); |
|
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1325 video->wm_title = NULL; |
| 0 | 1326 } |
|
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|
1327 if ( video->wm_icon != NULL ) { |
|
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|
1328 free(video->wm_icon); |
|
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1329 video->wm_icon = NULL; |
| 0 | 1330 } |
| 1331 | |
| 1332 /* Finish cleaning up video subsystem */ | |
| 1333 video->free(this); | |
| 1334 current_video = NULL; | |
| 1335 } | |
| 1336 return; | |
| 1337 } | |
| 1338 | |
| 1339 /* Load the GL driver library */ | |
| 1340 int SDL_GL_LoadLibrary(const char *path) | |
| 1341 { | |
| 1342 SDL_VideoDevice *video = current_video; | |
| 1343 SDL_VideoDevice *this = current_video; | |
| 1344 int retval; | |
| 1345 | |
| 1346 retval = -1; | |
|
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1347 if ( video == NULL ) { |
|
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1348 SDL_SetError("Video subsystem has not been initialized"); |
| 0 | 1349 } else { |
|
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1350 if ( video->GL_LoadLibrary ) { |
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1351 retval = video->GL_LoadLibrary(this, path); |
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1352 } else { |
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1353 SDL_SetError("No dynamic GL support in video driver"); |
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|
1354 } |
| 0 | 1355 } |
| 1356 return(retval); | |
| 1357 } | |
| 1358 | |
| 1359 void *SDL_GL_GetProcAddress(const char* proc) | |
| 1360 { | |
| 1361 SDL_VideoDevice *video = current_video; | |
| 1362 SDL_VideoDevice *this = current_video; | |
| 1363 void *func; | |
| 1364 | |
| 1365 func = NULL; | |
| 1366 if ( video->GL_GetProcAddress ) { | |
| 1367 if ( video->gl_config.driver_loaded ) { | |
| 1368 func = video->GL_GetProcAddress(this, proc); | |
| 1369 } else { | |
| 1370 SDL_SetError("No GL driver has been loaded"); | |
| 1371 } | |
| 1372 } else { | |
| 1373 SDL_SetError("No dynamic GL support in video driver"); | |
| 1374 } | |
| 1375 return func; | |
| 1376 } | |
| 1377 | |
| 1378 /* Set the specified GL attribute for setting up a GL video mode */ | |
| 1379 int SDL_GL_SetAttribute( SDL_GLattr attr, int value ) | |
| 1380 { | |
| 1381 int retval; | |
| 1382 SDL_VideoDevice *video = current_video; | |
| 1383 | |
| 1384 retval = 0; | |
| 1385 switch (attr) { | |
| 1386 case SDL_GL_RED_SIZE: | |
| 1387 video->gl_config.red_size = value; | |
| 1388 break; | |
| 1389 case SDL_GL_GREEN_SIZE: | |
| 1390 video->gl_config.green_size = value; | |
| 1391 break; | |
| 1392 case SDL_GL_BLUE_SIZE: | |
| 1393 video->gl_config.blue_size = value; | |
| 1394 break; | |
| 1395 case SDL_GL_ALPHA_SIZE: | |
| 1396 video->gl_config.alpha_size = value; | |
| 1397 break; | |
| 1398 case SDL_GL_DOUBLEBUFFER: | |
| 1399 video->gl_config.double_buffer = value; | |
| 1400 break; | |
| 1401 case SDL_GL_BUFFER_SIZE: | |
| 1402 video->gl_config.buffer_size = value; | |
| 1403 break; | |
| 1404 case SDL_GL_DEPTH_SIZE: | |
| 1405 video->gl_config.depth_size = value; | |
| 1406 break; | |
| 1407 case SDL_GL_STENCIL_SIZE: | |
| 1408 video->gl_config.stencil_size = value; | |
| 1409 break; | |
|
450
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|
1410 case SDL_GL_ACCUM_RED_SIZE: |
| 0 | 1411 video->gl_config.accum_red_size = value; |
| 1412 break; | |
|
450
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|
1413 case SDL_GL_ACCUM_GREEN_SIZE: |
| 0 | 1414 video->gl_config.accum_green_size = value; |
| 1415 break; | |
|
450
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|
1416 case SDL_GL_ACCUM_BLUE_SIZE: |
| 0 | 1417 video->gl_config.accum_blue_size = value; |
| 1418 break; | |
|
450
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1419 case SDL_GL_ACCUM_ALPHA_SIZE: |
| 0 | 1420 video->gl_config.accum_alpha_size = value; |
| 1421 break; | |
|
450
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1422 case SDL_GL_STEREO: |
|
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1423 video->gl_config.stereo = value; |
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1424 break; |
|
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1425 case SDL_GL_SAMPLE_BUFFERS: |
|
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1426 video->gl_config.sample_buffers = value; |
|
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1427 break; |
|
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1428 case SDL_GL_SAMPLES: |
|
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1429 video->gl_config.samples = value; |
|
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|
1430 break; |
| 0 | 1431 default: |
| 1432 SDL_SetError("Unknown OpenGL attribute"); | |
| 1433 retval = -1; | |
| 1434 break; | |
| 1435 } | |
| 1436 return(retval); | |
| 1437 } | |
| 1438 | |
| 1439 /* Retrieve an attribute value from the windowing system. */ | |
| 1440 int SDL_GL_GetAttribute(SDL_GLattr attr, int* value) | |
| 1441 { | |
| 1442 int retval = -1; | |
| 1443 SDL_VideoDevice* video = current_video; | |
| 1444 SDL_VideoDevice* this = current_video; | |
| 1445 | |
| 1446 if ( video->GL_GetAttribute ) { | |
| 1447 retval = this->GL_GetAttribute(this, attr, value); | |
|
11
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1448 } else { |
|
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*** empty log message ***
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1449 *value = 0; |
|
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|
1450 SDL_SetError("GL_GetAttribute not supported"); |
| 0 | 1451 } |
| 1452 return retval; | |
| 1453 } | |
| 1454 | |
| 1455 /* Perform a GL buffer swap on the current GL context */ | |
| 1456 void SDL_GL_SwapBuffers(void) | |
| 1457 { | |
| 1458 SDL_VideoDevice *video = current_video; | |
| 1459 SDL_VideoDevice *this = current_video; | |
| 1460 | |
| 1461 if ( video->screen->flags & SDL_OPENGL ) { | |
|
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1462 video->GL_SwapBuffers(this); |
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1463 } else { |
|
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1464 SDL_SetError("OpenGL video mode has not been set"); |
| 0 | 1465 } |
| 1466 } | |
| 1467 | |
| 1468 /* Update rects with locking */ | |
| 1469 void SDL_GL_UpdateRectsLock(SDL_VideoDevice* this, int numrects, SDL_Rect *rects) | |
| 1470 { | |
| 1471 SDL_GL_Lock(); | |
| 1472 SDL_GL_UpdateRects(numrects, rects); | |
| 1473 SDL_GL_Unlock(); | |
| 1474 } | |
| 1475 | |
| 1476 /* Update rects without state setting and changing (the caller is responsible for it) */ | |
| 1477 void SDL_GL_UpdateRects(int numrects, SDL_Rect *rects) | |
| 1478 { | |
| 1479 #ifdef HAVE_OPENGL | |
| 1480 SDL_VideoDevice *this = current_video; | |
| 1481 SDL_Rect update, tmp; | |
| 1482 int x, y, i; | |
| 1483 | |
| 1484 for ( i = 0; i < numrects; i++ ) | |
| 1485 { | |
| 1486 tmp.y = rects[i].y; | |
| 1487 tmp.h = rects[i].h; | |
| 1488 for ( y = 0; y <= rects[i].h / 256; y++ ) | |
| 1489 { | |
| 1490 tmp.x = rects[i].x; | |
| 1491 tmp.w = rects[i].w; | |
| 1492 for ( x = 0; x <= rects[i].w / 256; x++ ) | |
| 1493 { | |
| 1494 update.x = tmp.x; | |
| 1495 update.y = tmp.y; | |
| 1496 update.w = tmp.w; | |
| 1497 update.h = tmp.h; | |
| 1498 | |
| 1499 if ( update.w > 256 ) | |
| 1500 update.w = 256; | |
| 1501 | |
| 1502 if ( update.h > 256 ) | |
| 1503 update.h = 256; | |
| 1504 | |
| 1505 this->glFlush(); | |
| 1506 this->glTexSubImage2D( | |
| 1507 GL_TEXTURE_2D, | |
| 1508 0, | |
| 1509 0, | |
| 1510 0, | |
| 1511 update.w, | |
| 1512 update.h, | |
| 1513 this->is_32bit? GL_RGBA : GL_RGB, | |
| 1514 #ifdef GL_VERSION_1_2 | |
| 1515 this->is_32bit ? GL_UNSIGNED_BYTE : GL_UNSIGNED_SHORT_5_6_5, | |
| 1516 #else | |
| 1517 GL_UNSIGNED_BYTE, | |
| 1518 #endif | |
| 1519 (Uint8 *)this->screen->pixels + | |
| 1520 this->screen->format->BytesPerPixel * update.x + | |
| 1521 update.y * this->screen->pitch ); | |
| 1522 | |
| 1523 this->glFlush(); | |
| 1524 /* | |
| 1525 * Note the parens around the function name: | |
| 1526 * This is because some OpenGL implementations define glTexCoord etc | |
| 1527 * as macros, and we don't want them expanded here. | |
| 1528 */ | |
| 1529 this->glBegin(GL_TRIANGLE_STRIP); | |
| 1530 (this->glTexCoord2f)( 0.0, 0.0 ); | |
| 1531 (this->glVertex2i)( update.x, update.y ); | |
| 1532 (this->glTexCoord2f)( (float)(update.w / 256.0), 0.0 ); | |
| 1533 (this->glVertex2i)( update.x + update.w, update.y ); | |
| 1534 (this->glTexCoord2f)( 0.0, (float)(update.h / 256.0) ); | |
| 1535 (this->glVertex2i)( update.x, update.y + update.h ); | |
| 1536 (this->glTexCoord2f)( (float)(update.w / 256.0), (float)(update.h / 256.0) ); | |
| 1537 (this->glVertex2i)( update.x + update.w , update.y + update.h ); | |
| 1538 this->glEnd(); | |
| 1539 | |
| 1540 tmp.x += 256; | |
| 1541 tmp.w -= 256; | |
| 1542 } | |
| 1543 tmp.y += 256; | |
| 1544 tmp.h -= 256; | |
| 1545 } | |
| 1546 } | |
| 1547 #endif | |
| 1548 } | |
| 1549 | |
| 1550 /* Lock == save current state */ | |
| 1551 void SDL_GL_Lock() | |
| 1552 { | |
| 1553 #ifdef HAVE_OPENGL | |
| 1554 lock_count--; | |
| 1555 if (lock_count==-1) | |
| 1556 { | |
| 1557 SDL_VideoDevice *this = current_video; | |
| 1558 | |
| 1559 this->glPushAttrib( GL_ALL_ATTRIB_BITS ); /* TODO: narrow range of what is saved */ | |
|
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1560 #ifdef GL_CLIENT_PIXEL_STORE_BIT |
| 0 | 1561 this->glPushClientAttrib( GL_CLIENT_PIXEL_STORE_BIT ); |
|
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1562 #endif |
| 0 | 1563 |
| 1564 this->glEnable(GL_TEXTURE_2D); | |
| 1565 this->glEnable(GL_BLEND); | |
| 1566 this->glDisable(GL_FOG); | |
| 1567 this->glDisable(GL_ALPHA_TEST); | |
| 1568 this->glDisable(GL_DEPTH_TEST); | |
| 1569 this->glDisable(GL_SCISSOR_TEST); | |
| 1570 this->glDisable(GL_STENCIL_TEST); | |
| 1571 this->glDisable(GL_CULL_FACE); | |
| 1572 | |
| 1573 this->glBindTexture( GL_TEXTURE_2D, this->texture ); | |
| 1574 this->glTexEnvf( GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE ); | |
| 1575 this->glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST ); | |
| 1576 this->glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST ); | |
| 1577 this->glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT ); | |
| 1578 this->glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT ); | |
| 1579 | |
| 1580 this->glPixelStorei( GL_UNPACK_ROW_LENGTH, this->screen->pitch / this->screen->format->BytesPerPixel ); | |
| 1581 this->glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA); | |
| 1582 (this->glColor4f)(1.0, 1.0, 1.0, 1.0); /* Solaris workaround */ | |
| 1583 | |
| 1584 this->glViewport(0, 0, this->screen->w, this->screen->h); | |
| 1585 this->glMatrixMode(GL_PROJECTION); | |
| 1586 this->glPushMatrix(); | |
| 1587 this->glLoadIdentity(); | |
| 1588 | |
| 1589 this->glOrtho(0.0, (GLdouble) this->screen->w, (GLdouble) this->screen->h, 0.0, 0.0, 1.0); | |
| 1590 | |
| 1591 this->glMatrixMode(GL_MODELVIEW); | |
| 1592 this->glPushMatrix(); | |
| 1593 this->glLoadIdentity(); | |
| 1594 } | |
| 1595 #endif | |
| 1596 } | |
| 1597 | |
| 1598 /* Unlock == restore saved state */ | |
| 1599 void SDL_GL_Unlock() | |
| 1600 { | |
| 1601 #ifdef HAVE_OPENGL | |
| 1602 lock_count++; | |
| 1603 if (lock_count==0) | |
| 1604 { | |
| 1605 SDL_VideoDevice *this = current_video; | |
| 1606 | |
| 1607 this->glPopMatrix(); | |
| 1608 this->glMatrixMode(GL_PROJECTION); | |
| 1609 this->glPopMatrix(); | |
| 1610 | |
| 1611 this->glPopClientAttrib(); | |
| 1612 this->glPopAttrib(); | |
| 1613 } | |
| 1614 #endif | |
| 1615 } | |
| 1616 | |
| 1617 /* | |
| 1618 * Sets/Gets the title and icon text of the display window, if any. | |
| 1619 */ | |
| 1620 void SDL_WM_SetCaption (const char *title, const char *icon) | |
| 1621 { | |
| 1622 SDL_VideoDevice *video = current_video; | |
| 1623 SDL_VideoDevice *this = current_video; | |
| 1624 | |
|
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|
1625 if ( video ) { |
|
bd6b0a910a65
* Removed fullscreen menu option from the "Window" menu
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diff
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|
1626 if ( title ) { |
|
bd6b0a910a65
* Removed fullscreen menu option from the "Window" menu
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diff
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|
1627 if ( video->wm_title ) { |
|
bd6b0a910a65
* Removed fullscreen menu option from the "Window" menu
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diff
changeset
|
1628 free(video->wm_title); |
|
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|
1629 } |
|
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|
1630 video->wm_title = (char *)malloc(strlen(title)+1); |
|
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1631 if ( video->wm_title != NULL ) { |
|
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|
1632 strcpy(video->wm_title, title); |
|
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|
1633 } |
| 0 | 1634 } |
|
58
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|
1635 if ( icon ) { |
|
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|
1636 if ( video->wm_icon ) { |
|
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|
1637 free(video->wm_icon); |
|
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|
1638 } |
|
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|
1639 video->wm_icon = (char *)malloc(strlen(icon)+1); |
|
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|
1640 if ( video->wm_icon != NULL ) { |
|
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|
1641 strcpy(video->wm_icon, icon); |
|
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|
1642 } |
| 0 | 1643 } |
|
58
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|
1644 if ( (title || icon) && (video->SetCaption != NULL) ) { |
|
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|
1645 video->SetCaption(this, video->wm_title,video->wm_icon); |
| 0 | 1646 } |
| 1647 } | |
| 1648 } | |
| 1649 void SDL_WM_GetCaption (char **title, char **icon) | |
| 1650 { | |
|
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|
1651 SDL_VideoDevice *video = current_video; |
|
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1652 |
|
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|
1653 if ( video ) { |
|
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|
1654 if ( title ) { |
|
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|
1655 *title = video->wm_title; |
|
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|
1656 } |
|
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|
1657 if ( icon ) { |
|
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|
1658 *icon = video->wm_icon; |
|
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|
1659 } |
| 0 | 1660 } |
| 1661 } | |
| 1662 | |
|
541
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|
1663 /* Utility function used by SDL_WM_SetIcon(); |
|
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1664 * flags & 1 for color key, flags & 2 for alpha channel. */ |
|
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1665 static void CreateMaskFromColorKeyOrAlpha(SDL_Surface *icon, Uint8 *mask, int flags) |
| 0 | 1666 { |
| 1667 int x, y; | |
| 1668 Uint32 colorkey; | |
| 1669 #define SET_MASKBIT(icon, x, y, mask) \ | |
| 1670 mask[(y*((icon->w+7)/8))+(x/8)] &= ~(0x01<<(7-(x%8))) | |
| 1671 | |
| 1672 colorkey = icon->format->colorkey; | |
| 1673 switch (icon->format->BytesPerPixel) { | |
| 1674 case 1: { Uint8 *pixels; | |
| 1675 for ( y=0; y<icon->h; ++y ) { | |
| 1676 pixels = (Uint8 *)icon->pixels + y*icon->pitch; | |
| 1677 for ( x=0; x<icon->w; ++x ) { | |
| 1678 if ( *pixels++ == colorkey ) { | |
| 1679 SET_MASKBIT(icon, x, y, mask); | |
| 1680 } | |
| 1681 } | |
| 1682 } | |
| 1683 } | |
| 1684 break; | |
| 1685 | |
| 1686 case 2: { Uint16 *pixels; | |
| 1687 for ( y=0; y<icon->h; ++y ) { | |
| 1688 pixels = (Uint16 *)icon->pixels + | |
| 1689 y*icon->pitch/2; | |
| 1690 for ( x=0; x<icon->w; ++x ) { | |
|
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1691 if ( (flags & 1) && *pixels == colorkey ) { |
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1692 SET_MASKBIT(icon, x, y, mask); |
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1693 } else if((flags & 2) && (*pixels & icon->format->Amask) == 0) { |
| 0 | 1694 SET_MASKBIT(icon, x, y, mask); |
| 1695 } | |
|
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1696 pixels++; |
| 0 | 1697 } |
| 1698 } | |
| 1699 } | |
| 1700 break; | |
| 1701 | |
| 1702 case 4: { Uint32 *pixels; | |
| 1703 for ( y=0; y<icon->h; ++y ) { | |
| 1704 pixels = (Uint32 *)icon->pixels + | |
| 1705 y*icon->pitch/4; | |
| 1706 for ( x=0; x<icon->w; ++x ) { | |
|
541
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1707 if ( (flags & 1) && *pixels == colorkey ) { |
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1708 SET_MASKBIT(icon, x, y, mask); |
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1709 } else if((flags & 2) && (*pixels & icon->format->Amask) == 0) { |
| 0 | 1710 SET_MASKBIT(icon, x, y, mask); |
| 1711 } | |
|
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|
1712 pixels++; |
| 0 | 1713 } |
| 1714 } | |
| 1715 } | |
| 1716 break; | |
| 1717 } | |
| 1718 } | |
| 1719 | |
| 1720 /* | |
| 1721 * Sets the window manager icon for the display window. | |
| 1722 */ | |
| 1723 void SDL_WM_SetIcon (SDL_Surface *icon, Uint8 *mask) | |
| 1724 { | |
| 1725 SDL_VideoDevice *video = current_video; | |
| 1726 SDL_VideoDevice *this = current_video; | |
| 1727 | |
| 1728 if ( icon && video->SetIcon ) { | |
| 1729 /* Generate a mask if necessary, and create the icon! */ | |
| 1730 if ( mask == NULL ) { | |
| 1731 int mask_len = icon->h*(icon->w+7)/8; | |
|
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1732 int flags = 0; |
| 0 | 1733 mask = (Uint8 *)malloc(mask_len); |
| 1734 if ( mask == NULL ) { | |
| 1735 return; | |
| 1736 } | |
| 1737 memset(mask, ~0, mask_len); | |
|
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1738 if ( icon->flags & SDL_SRCCOLORKEY ) flags |= 1; |
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1739 if ( icon->flags & SDL_SRCALPHA ) flags |= 2; |
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1740 if( flags ) { |
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1741 CreateMaskFromColorKeyOrAlpha(icon, mask, flags); |
| 0 | 1742 } |
| 1743 video->SetIcon(video, icon, mask); | |
| 1744 free(mask); | |
| 1745 } else { | |
| 1746 video->SetIcon(this, icon, mask); | |
| 1747 } | |
| 1748 } | |
| 1749 } | |
| 1750 | |
| 1751 /* | |
| 1752 * Grab or ungrab the keyboard and mouse input. | |
| 1753 * This function returns the final grab mode after calling the | |
| 1754 * driver dependent function. | |
| 1755 */ | |
| 1756 static SDL_GrabMode SDL_WM_GrabInputRaw(SDL_GrabMode mode) | |
| 1757 { | |
| 1758 SDL_VideoDevice *video = current_video; | |
| 1759 SDL_VideoDevice *this = current_video; | |
| 1760 | |
| 1761 /* Only do something if we have support for grabs */ | |
| 1762 if ( video->GrabInput == NULL ) { | |
| 1763 return(video->input_grab); | |
| 1764 } | |
| 1765 | |
| 1766 /* If the final grab mode if off, only then do we actually grab */ | |
| 1767 #ifdef DEBUG_GRAB | |
| 1768 printf("SDL_WM_GrabInputRaw(%d) ... ", mode); | |
| 1769 #endif | |
| 1770 if ( mode == SDL_GRAB_OFF ) { | |
| 1771 if ( video->input_grab != SDL_GRAB_OFF ) { | |
| 1772 mode = video->GrabInput(this, mode); | |
| 1773 } | |
| 1774 } else { | |
| 1775 if ( video->input_grab == SDL_GRAB_OFF ) { | |
| 1776 mode = video->GrabInput(this, mode); | |
| 1777 } | |
| 1778 } | |
| 1779 if ( mode != video->input_grab ) { | |
| 1780 video->input_grab = mode; | |
| 1781 if ( video->CheckMouseMode ) { | |
| 1782 video->CheckMouseMode(this); | |
| 1783 } | |
| 1784 } | |
| 1785 #ifdef DEBUG_GRAB | |
| 1786 printf("Final mode %d\n", video->input_grab); | |
| 1787 #endif | |
| 1788 | |
| 1789 /* Return the final grab state */ | |
| 1790 if ( mode >= SDL_GRAB_FULLSCREEN ) { | |
| 1791 mode -= SDL_GRAB_FULLSCREEN; | |
| 1792 } | |
| 1793 return(mode); | |
| 1794 } | |
| 1795 SDL_GrabMode SDL_WM_GrabInput(SDL_GrabMode mode) | |
| 1796 { | |
| 1797 SDL_VideoDevice *video = current_video; | |
| 1798 | |
|
11
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|
1799 /* If the video isn't initialized yet, we can't do anything */ |
|
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1800 if ( ! video ) { |
|
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|
1801 return SDL_GRAB_OFF; |
|
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|
1802 } |
| 0 | 1803 |
| 1804 /* Return the current mode on query */ | |
| 1805 if ( mode == SDL_GRAB_QUERY ) { | |
| 1806 mode = video->input_grab; | |
| 1807 if ( mode >= SDL_GRAB_FULLSCREEN ) { | |
| 1808 mode -= SDL_GRAB_FULLSCREEN; | |
| 1809 } | |
| 1810 return(mode); | |
| 1811 } | |
| 1812 | |
| 1813 #ifdef DEBUG_GRAB | |
| 1814 printf("SDL_WM_GrabInput(%d) ... ", mode); | |
| 1815 #endif | |
| 1816 /* If the video surface is fullscreen, we always grab */ | |
| 1817 if ( mode >= SDL_GRAB_FULLSCREEN ) { | |
| 1818 mode -= SDL_GRAB_FULLSCREEN; | |
| 1819 } | |
| 1820 if ( SDL_VideoSurface && (SDL_VideoSurface->flags & SDL_FULLSCREEN) ) { | |
| 1821 mode += SDL_GRAB_FULLSCREEN; | |
| 1822 } | |
| 1823 return(SDL_WM_GrabInputRaw(mode)); | |
| 1824 } | |
| 1825 static SDL_GrabMode SDL_WM_GrabInputOff(void) | |
| 1826 { | |
| 1827 SDL_GrabMode mode; | |
| 1828 | |
| 1829 /* First query the current grab state */ | |
| 1830 mode = SDL_WM_GrabInput(SDL_GRAB_QUERY); | |
| 1831 | |
| 1832 /* Now explicitly turn off input grab */ | |
| 1833 SDL_WM_GrabInputRaw(SDL_GRAB_OFF); | |
| 1834 | |
| 1835 /* Return the old state */ | |
| 1836 return(mode); | |
| 1837 } | |
| 1838 | |
| 1839 /* | |
| 1840 * Iconify the window in window managed environments. | |
| 1841 * A successful iconification will result in an SDL_APPACTIVE loss event. | |
| 1842 */ | |
| 1843 int SDL_WM_IconifyWindow(void) | |
| 1844 { | |
| 1845 SDL_VideoDevice *video = current_video; | |
| 1846 SDL_VideoDevice *this = current_video; | |
| 1847 int retval; | |
| 1848 | |
| 1849 retval = 0; | |
| 1850 if ( video->IconifyWindow ) { | |
| 1851 retval = video->IconifyWindow(this); | |
| 1852 } | |
| 1853 return(retval); | |
| 1854 } | |
| 1855 | |
| 1856 /* | |
| 1857 * Toggle fullscreen mode | |
| 1858 */ | |
| 1859 int SDL_WM_ToggleFullScreen(SDL_Surface *surface) | |
| 1860 { | |
| 1861 SDL_VideoDevice *video = current_video; | |
| 1862 SDL_VideoDevice *this = current_video; | |
| 1863 int toggled; | |
| 1864 | |
| 1865 toggled = 0; | |
| 1866 if ( SDL_PublicSurface && (surface == SDL_PublicSurface) && | |
| 1867 video->ToggleFullScreen ) { | |
| 1868 if ( surface->flags & SDL_FULLSCREEN ) { | |
| 1869 toggled = video->ToggleFullScreen(this, 0); | |
| 1870 if ( toggled ) { | |
| 1871 SDL_VideoSurface->flags &= ~SDL_FULLSCREEN; | |
| 1872 SDL_PublicSurface->flags &= ~SDL_FULLSCREEN; | |
| 1873 } | |
| 1874 } else { | |
| 1875 toggled = video->ToggleFullScreen(this, 1); | |
| 1876 if ( toggled ) { | |
| 1877 SDL_VideoSurface->flags |= SDL_FULLSCREEN; | |
| 1878 SDL_PublicSurface->flags |= SDL_FULLSCREEN; | |
| 1879 } | |
| 1880 } | |
| 1881 /* Double-check the grab state inside SDL_WM_GrabInput() */ | |
| 1882 if ( toggled ) { | |
| 1883 SDL_WM_GrabInput(video->input_grab); | |
| 1884 } | |
| 1885 } | |
| 1886 return(toggled); | |
| 1887 } | |
| 1888 | |
| 1889 /* | |
| 1890 * Get some platform dependent window manager information | |
| 1891 */ | |
| 1892 int SDL_GetWMInfo (SDL_SysWMinfo *info) | |
| 1893 { | |
| 1894 SDL_VideoDevice *video = current_video; | |
| 1895 SDL_VideoDevice *this = current_video; | |
| 1896 | |
| 1897 if ( video && video->GetWMInfo ) { | |
| 1898 return(video->GetWMInfo(this, info)); | |
| 1899 } else { | |
| 1900 return(0); | |
| 1901 } | |
| 1902 } |