Mercurial > sdl-ios-xcode
annotate src/video/svga/SDL_svgavideo.c @ 1050:8e1815fd9777
Holding down shift while moving the mouse's scrollwheel on MacOS X makes the
OS report these are "horizontal scrollwheel" events, which confuses gaming
apps in several legitimate conditions. Now all scrollwheel events are made
to look vertical when passed to the app.
Patch by John Knottenbelt.
http://www.libsdl.org/pipermail/sdl/2005-March/067978.html
| author | Ryan C. Gordon <icculus@icculus.org> |
|---|---|
| date | Sun, 17 Apr 2005 10:32:41 +0000 |
| parents | b8d311d90021 |
| children | c9b51268668f |
| 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 /* SVGAlib based SDL video driver implementation. | |
| 29 */ | |
| 30 | |
| 31 #include <stdlib.h> | |
| 32 #include <stdio.h> | |
| 33 #include <unistd.h> | |
| 34 #include <sys/stat.h> | |
|
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35 #include <sys/types.h> |
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36 #include <sys/ioctl.h> |
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37 #include <fcntl.h> |
| 0 | 38 |
| 39 #if defined(linux) | |
| 40 #include <linux/vt.h> | |
| 41 #elif defined(__FreeBSD__) | |
| 42 #include <sys/consio.h> | |
| 43 #else | |
| 44 #error You must choose your operating system here | |
| 45 #endif | |
| 46 #include <vga.h> | |
| 47 #include <vgamouse.h> | |
| 48 #include <vgakeyboard.h> | |
| 49 | |
| 50 #include "SDL.h" | |
| 51 #include "SDL_error.h" | |
| 52 #include "SDL_video.h" | |
| 53 #include "SDL_mouse.h" | |
| 54 #include "SDL_sysvideo.h" | |
| 55 #include "SDL_pixels_c.h" | |
| 56 #include "SDL_events_c.h" | |
| 57 #include "SDL_svgavideo.h" | |
| 58 #include "SDL_svgaevents_c.h" | |
| 59 #include "SDL_svgamouse_c.h" | |
| 60 | |
| 61 | |
| 62 /* Initialization/Query functions */ | |
| 63 static int SVGA_VideoInit(_THIS, SDL_PixelFormat *vformat); | |
| 64 static SDL_Rect **SVGA_ListModes(_THIS, SDL_PixelFormat *format, Uint32 flags); | |
| 65 static SDL_Surface *SVGA_SetVideoMode(_THIS, SDL_Surface *current, int width, int height, int bpp, Uint32 flags); | |
| 66 static int SVGA_SetColors(_THIS, int firstcolor, int ncolors, | |
| 67 SDL_Color *colors); | |
| 68 static void SVGA_VideoQuit(_THIS); | |
| 69 | |
| 70 /* Hardware surface functions */ | |
| 71 static int SVGA_AllocHWSurface(_THIS, SDL_Surface *surface); | |
| 72 static int SVGA_LockHWSurface(_THIS, SDL_Surface *surface); | |
| 73 static int SVGA_FlipHWSurface(_THIS, SDL_Surface *surface); | |
| 74 static void SVGA_UnlockHWSurface(_THIS, SDL_Surface *surface); | |
| 75 static void SVGA_FreeHWSurface(_THIS, SDL_Surface *surface); | |
| 76 | |
| 77 /* SVGAlib driver bootstrap functions */ | |
| 78 | |
| 79 static int SVGA_Available(void) | |
| 80 { | |
| 81 /* Check to see if we are root and stdin is a virtual console */ | |
| 82 int console; | |
|
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83 |
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84 /* SVGALib 1.9.x+ doesn't require root (via /dev/svga) */ |
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85 int svgalib2 = -1; |
| 0 | 86 |
|
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87 /* See if we are connected to a virtual terminal */ |
| 0 | 88 console = STDIN_FILENO; |
|
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89 #if 0 /* This is no longer needed, SVGAlib can switch consoles for us */ |
| 0 | 90 if ( console >= 0 ) { |
| 91 struct stat sb; | |
| 92 struct vt_mode dummy; | |
| 93 | |
| 94 if ( (fstat(console, &sb) < 0) || | |
| 95 (ioctl(console, VT_GETMODE, &dummy) < 0) ) { | |
| 96 console = -1; | |
| 97 } | |
| 98 } | |
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99 #endif /* 0 */ |
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100 |
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101 /* See if SVGAlib 2.0 is available */ |
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102 svgalib2 = open("/dev/svga", O_RDONLY); |
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103 if (svgalib2 != -1) { |
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104 close(svgalib2); |
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105 } |
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106 |
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107 return(((svgalib2 != -1) || (geteuid() == 0)) && (console >= 0)); |
| 0 | 108 } |
| 109 | |
| 110 static void SVGA_DeleteDevice(SDL_VideoDevice *device) | |
| 111 { | |
| 112 free(device->hidden); | |
| 113 free(device); | |
| 114 } | |
| 115 | |
| 116 static SDL_VideoDevice *SVGA_CreateDevice(int devindex) | |
| 117 { | |
| 118 SDL_VideoDevice *device; | |
| 119 | |
| 120 /* Initialize all variables that we clean on shutdown */ | |
| 121 device = (SDL_VideoDevice *)malloc(sizeof(SDL_VideoDevice)); | |
| 122 if ( device ) { | |
| 123 memset(device, 0, (sizeof *device)); | |
| 124 device->hidden = (struct SDL_PrivateVideoData *) | |
| 125 malloc((sizeof *device->hidden)); | |
| 126 } | |
| 127 if ( (device == NULL) || (device->hidden == NULL) ) { | |
| 128 SDL_OutOfMemory(); | |
| 129 if ( device ) { | |
| 130 free(device); | |
| 131 } | |
| 132 return(0); | |
| 133 } | |
| 134 memset(device->hidden, 0, (sizeof *device->hidden)); | |
| 135 | |
| 136 /* Set the function pointers */ | |
| 137 device->VideoInit = SVGA_VideoInit; | |
| 138 device->ListModes = SVGA_ListModes; | |
| 139 device->SetVideoMode = SVGA_SetVideoMode; | |
| 140 device->SetColors = SVGA_SetColors; | |
| 141 device->UpdateRects = NULL; | |
| 142 device->VideoQuit = SVGA_VideoQuit; | |
| 143 device->AllocHWSurface = SVGA_AllocHWSurface; | |
| 144 device->CheckHWBlit = NULL; | |
| 145 device->FillHWRect = NULL; | |
| 146 device->SetHWColorKey = NULL; | |
| 147 device->SetHWAlpha = NULL; | |
| 148 device->LockHWSurface = SVGA_LockHWSurface; | |
| 149 device->UnlockHWSurface = SVGA_UnlockHWSurface; | |
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150 device->FlipHWSurface = SVGA_FlipHWSurface; |
| 0 | 151 device->FreeHWSurface = SVGA_FreeHWSurface; |
| 152 device->SetCaption = NULL; | |
| 153 device->SetIcon = NULL; | |
| 154 device->IconifyWindow = NULL; | |
| 155 device->GrabInput = NULL; | |
| 156 device->GetWMInfo = NULL; | |
| 157 device->InitOSKeymap = SVGA_InitOSKeymap; | |
| 158 device->PumpEvents = SVGA_PumpEvents; | |
| 159 | |
| 160 device->free = SVGA_DeleteDevice; | |
| 161 | |
| 162 return device; | |
| 163 } | |
| 164 | |
| 165 VideoBootStrap SVGALIB_bootstrap = { | |
| 166 "svgalib", "SVGAlib", | |
| 167 SVGA_Available, SVGA_CreateDevice | |
| 168 }; | |
| 169 | |
| 170 static int SVGA_AddMode(_THIS, int mode, int actually_add, int force) | |
| 171 { | |
| 172 vga_modeinfo *modeinfo; | |
| 173 | |
| 174 modeinfo = vga_getmodeinfo(mode); | |
| 175 if ( force || ( modeinfo->flags & CAPABLE_LINEAR ) ) { | |
| 176 int i, j; | |
| 177 | |
| 178 i = modeinfo->bytesperpixel-1; | |
| 179 if ( actually_add ) { | |
| 180 SDL_Rect saved_rect[2]; | |
| 181 int saved_mode[2]; | |
| 182 int b; | |
| 183 | |
| 184 /* Add the mode, sorted largest to smallest */ | |
| 185 b = 0; | |
| 186 j = 0; | |
| 187 while ( (SDL_modelist[i][j]->w > modeinfo->width) || | |
| 188 (SDL_modelist[i][j]->h > modeinfo->height) ) { | |
| 189 ++j; | |
| 190 } | |
| 191 /* Skip modes that are already in our list */ | |
| 192 if ( (SDL_modelist[i][j]->w == modeinfo->width) && | |
| 193 (SDL_modelist[i][j]->h == modeinfo->height) ) { | |
| 194 return(0); | |
| 195 } | |
| 196 /* Insert the new mode */ | |
| 197 saved_rect[b] = *SDL_modelist[i][j]; | |
| 198 saved_mode[b] = SDL_vgamode[i][j]; | |
| 199 SDL_modelist[i][j]->w = modeinfo->width; | |
| 200 SDL_modelist[i][j]->h = modeinfo->height; | |
| 201 SDL_vgamode[i][j] = mode; | |
| 202 /* Everybody scoot down! */ | |
| 203 if ( saved_rect[b].w && saved_rect[b].h ) { | |
| 204 for ( ++j; SDL_modelist[i][j]->w; ++j ) { | |
| 205 saved_rect[!b] = *SDL_modelist[i][j]; | |
| 206 saved_mode[!b] = SDL_vgamode[i][j]; | |
| 207 *SDL_modelist[i][j] = saved_rect[b]; | |
| 208 SDL_vgamode[i][j] = saved_mode[b]; | |
| 209 b = !b; | |
| 210 } | |
| 211 *SDL_modelist[i][j] = saved_rect[b]; | |
| 212 SDL_vgamode[i][j] = saved_mode[b]; | |
| 213 } | |
| 214 } else { | |
| 215 ++SDL_nummodes[i]; | |
| 216 } | |
| 217 } | |
| 218 return( force || ( modeinfo->flags & CAPABLE_LINEAR ) ); | |
| 219 } | |
| 220 | |
| 221 static void SVGA_UpdateVideoInfo(_THIS) | |
| 222 { | |
| 223 vga_modeinfo *modeinfo; | |
| 224 | |
| 225 this->info.wm_available = 0; | |
| 226 this->info.hw_available = 1; | |
| 227 modeinfo = vga_getmodeinfo(vga_getcurrentmode()); | |
|
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228 this->info.video_mem = modeinfo->memory; |
| 0 | 229 /* FIXME: Add hardware accelerated blit information */ |
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230 #ifdef SVGALIB_DEBUG |
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231 printf("Hardware accelerated blit: %savailable\n", modeinfo->haveblit ? "" : "not "); |
| 0 | 232 #endif |
| 233 } | |
| 234 | |
| 235 int SVGA_VideoInit(_THIS, SDL_PixelFormat *vformat) | |
| 236 { | |
| 237 int keyboard; | |
| 238 int i, j; | |
| 239 int mode, total_modes; | |
| 240 | |
| 241 /* Initialize all variables that we clean on shutdown */ | |
| 242 for ( i=0; i<NUM_MODELISTS; ++i ) { | |
| 243 SDL_nummodes[i] = 0; | |
| 244 SDL_modelist[i] = NULL; | |
| 245 SDL_vgamode[i] = NULL; | |
| 246 } | |
| 247 | |
| 248 /* Initialize the library */ | |
| 249 vga_disabledriverreport(); | |
| 250 if ( vga_init() < 0 ) { | |
| 251 SDL_SetError("Unable to initialize SVGAlib"); | |
| 252 return(-1); | |
| 253 } | |
| 254 vga_setmode(TEXT); | |
| 255 | |
| 256 /* Enable mouse and keyboard support */ | |
| 257 vga_setmousesupport(1); | |
| 258 keyboard = keyboard_init_return_fd(); | |
| 259 if ( keyboard < 0 ) { | |
| 260 SDL_SetError("Unable to initialize keyboard"); | |
| 261 return(-1); | |
| 262 } | |
| 263 if ( SVGA_initkeymaps(keyboard) < 0 ) { | |
| 264 return(-1); | |
| 265 } | |
| 266 keyboard_seteventhandler(SVGA_keyboardcallback); | |
| 267 | |
| 268 /* Determine the screen depth (use default 8-bit depth) */ | |
| 269 vformat->BitsPerPixel = 8; | |
| 270 | |
| 271 /* Enumerate the available fullscreen modes */ | |
| 272 total_modes = 0; | |
| 273 for ( mode=vga_lastmodenumber(); mode; --mode ) { | |
| 274 if ( vga_hasmode(mode) ) { | |
| 275 if ( SVGA_AddMode(this, mode, 0, 0) ) { | |
| 276 ++total_modes; | |
| 277 } | |
| 278 } | |
| 279 } | |
| 280 if ( SVGA_AddMode(this, G320x200x256, 0, 1) ) ++total_modes; | |
| 281 if ( total_modes == 0 ) { | |
| 282 SDL_SetError("No linear video modes available"); | |
| 283 return(-1); | |
| 284 } | |
| 285 for ( i=0; i<NUM_MODELISTS; ++i ) { | |
| 286 SDL_vgamode[i] = (int *)malloc(SDL_nummodes[i]*sizeof(int)); | |
| 287 if ( SDL_vgamode[i] == NULL ) { | |
| 288 SDL_OutOfMemory(); | |
| 289 return(-1); | |
| 290 } | |
| 291 SDL_modelist[i] = (SDL_Rect **) | |
| 292 malloc((SDL_nummodes[i]+1)*sizeof(SDL_Rect *)); | |
| 293 if ( SDL_modelist[i] == NULL ) { | |
| 294 SDL_OutOfMemory(); | |
| 295 return(-1); | |
| 296 } | |
| 297 for ( j=0; j<SDL_nummodes[i]; ++j ) { | |
| 298 SDL_modelist[i][j]=(SDL_Rect *)malloc(sizeof(SDL_Rect)); | |
| 299 if ( SDL_modelist[i][j] == NULL ) { | |
| 300 SDL_OutOfMemory(); | |
| 301 return(-1); | |
| 302 } | |
| 303 memset(SDL_modelist[i][j], 0, sizeof(SDL_Rect)); | |
| 304 } | |
| 305 SDL_modelist[i][j] = NULL; | |
| 306 } | |
| 307 for ( mode=vga_lastmodenumber(); mode; --mode ) { | |
| 308 if ( vga_hasmode(mode) ) { | |
| 309 SVGA_AddMode(this, mode, 1, 0); | |
| 310 } | |
| 311 } | |
| 312 SVGA_AddMode(this, G320x200x256, 1, 1); | |
| 313 | |
| 314 /* Free extra (duplicated) modes */ | |
| 315 for ( i=0; i<NUM_MODELISTS; ++i ) { | |
| 316 j = 0; | |
| 317 while ( SDL_modelist[i][j] && SDL_modelist[i][j]->w ) { | |
| 318 j++; | |
| 319 } | |
| 320 while ( SDL_modelist[i][j] ) { | |
| 321 free(SDL_modelist[i][j]); | |
| 322 SDL_modelist[i][j] = NULL; | |
| 323 j++; | |
| 324 } | |
| 325 } | |
| 326 | |
| 327 /* Fill in our hardware acceleration capabilities */ | |
| 328 SVGA_UpdateVideoInfo(this); | |
| 329 | |
| 330 /* We're done! */ | |
| 331 return(0); | |
| 332 } | |
| 333 | |
| 334 SDL_Rect **SVGA_ListModes(_THIS, SDL_PixelFormat *format, Uint32 flags) | |
| 335 { | |
| 336 return(SDL_modelist[((format->BitsPerPixel+7)/8)-1]); | |
| 337 } | |
| 338 | |
| 339 /* Various screen update functions available */ | |
| 340 static void SVGA_DirectUpdate(_THIS, int numrects, SDL_Rect *rects); | |
| 341 static void SVGA_BankedUpdate(_THIS, int numrects, SDL_Rect *rects); | |
| 342 | |
| 343 SDL_Surface *SVGA_SetVideoMode(_THIS, SDL_Surface *current, | |
| 344 int width, int height, int bpp, Uint32 flags) | |
| 345 { | |
| 346 int mode; | |
| 347 int vgamode; | |
| 348 vga_modeinfo *modeinfo; | |
|
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349 int screenpage_len; |
| 0 | 350 |
| 351 /* Try to set the requested linear video mode */ | |
| 352 bpp = (bpp+7)/8-1; | |
| 353 for ( mode=0; SDL_modelist[bpp][mode]; ++mode ) { | |
| 354 if ( (SDL_modelist[bpp][mode]->w == width) && | |
| 355 (SDL_modelist[bpp][mode]->h == height) ) { | |
| 356 break; | |
| 357 } | |
| 358 } | |
| 359 if ( SDL_modelist[bpp][mode] == NULL ) { | |
| 360 SDL_SetError("Couldn't find requested mode in list"); | |
| 361 return(NULL); | |
| 362 } | |
| 363 vga_setmode(SDL_vgamode[bpp][mode]); | |
| 364 vga_setpage(0); | |
| 365 | |
| 366 vgamode=SDL_vgamode[bpp][mode]; | |
| 367 if ((vga_setlinearaddressing()<0) && (vgamode!=G320x200x256)) { | |
| 368 SDL_SetError("Unable to set linear addressing"); | |
| 369 return(NULL); | |
| 370 } | |
| 371 modeinfo = vga_getmodeinfo(SDL_vgamode[bpp][mode]); | |
| 372 | |
| 373 /* Update hardware acceleration info */ | |
| 374 SVGA_UpdateVideoInfo(this); | |
| 375 | |
| 376 /* Allocate the new pixel format for the screen */ | |
| 377 bpp = (bpp+1)*8; | |
| 378 if ( (bpp == 16) && (modeinfo->colors == 32768) ) { | |
| 379 bpp = 15; | |
| 380 } | |
| 381 if ( ! SDL_ReallocFormat(current, bpp, 0, 0, 0, 0) ) { | |
| 382 return(NULL); | |
| 383 } | |
| 384 | |
| 385 /* Set up the new mode framebuffer */ | |
| 386 current->flags = (SDL_FULLSCREEN|SDL_HWSURFACE); | |
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387 if ( bpp == 8 ) { |
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388 /* FIXME: What about DirectColor? */ |
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389 current->flags |= SDL_HWPALETTE; |
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390 } |
| 0 | 391 current->w = width; |
| 392 current->h = height; | |
| 393 current->pitch = modeinfo->linewidth; | |
| 394 current->pixels = vga_getgraphmem(); | |
| 395 | |
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396 /* set double-buffering */ |
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397 if ( flags & SDL_DOUBLEBUF ) |
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398 { |
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399 /* length of one screen page in bytes */ |
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400 screenpage_len=current->h*modeinfo->linewidth; |
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401 |
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402 /* if start address should be aligned */ |
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403 if ( modeinfo->linewidth_unit ) |
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404 { |
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405 if ( screenpage_len % modeinfo->linewidth_unit ) |
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406 { |
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407 screenpage_len += modeinfo->linewidth_unit - ( screenpage_len % modeinfo->linewidth_unit ); |
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408 } |
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409 } |
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410 |
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411 /* if we heve enough videomemory = ak je dost videopamete */ |
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412 if ( modeinfo->memory > ( screenpage_len * 2 / 1024 ) ) |
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413 { |
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414 current->flags |= SDL_DOUBLEBUF; |
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415 flip_page = 0; |
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416 flip_offset[0] = 0; |
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417 flip_offset[1] = screenpage_len; |
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418 flip_address[0] = vga_getgraphmem(); |
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419 flip_address[1] = flip_address[0]+screenpage_len; |
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420 SVGA_FlipHWSurface(this,current); |
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421 } |
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422 } |
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423 |
| 0 | 424 /* Set the blit function */ |
| 425 this->UpdateRects = SVGA_DirectUpdate; | |
| 426 | |
| 427 /* Set up the mouse handler again (buggy SVGAlib 1.40) */ | |
| 428 mouse_seteventhandler(SVGA_mousecallback); | |
| 429 | |
| 430 /* We're done */ | |
| 431 return(current); | |
| 432 } | |
| 433 | |
| 434 /* We don't actually allow hardware surfaces other than the main one */ | |
| 435 static int SVGA_AllocHWSurface(_THIS, SDL_Surface *surface) | |
| 436 { | |
| 437 return(-1); | |
| 438 } | |
| 439 static void SVGA_FreeHWSurface(_THIS, SDL_Surface *surface) | |
| 440 { | |
| 441 return; | |
| 442 } | |
| 443 | |
| 444 /* We need to wait for vertical retrace on page flipped displays */ | |
| 445 static int SVGA_LockHWSurface(_THIS, SDL_Surface *surface) | |
| 446 { | |
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447 /* The waiting is done in SVGA_FlipHWSurface() */ |
| 0 | 448 return(0); |
| 449 } | |
| 450 static void SVGA_UnlockHWSurface(_THIS, SDL_Surface *surface) | |
| 451 { | |
| 452 return; | |
| 453 } | |
| 454 | |
| 455 static int SVGA_FlipHWSurface(_THIS, SDL_Surface *surface) | |
| 456 { | |
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457 vga_setdisplaystart(flip_offset[flip_page]); |
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458 flip_page=!flip_page; |
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459 surface->pixels=flip_address[flip_page]; |
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460 vga_waitretrace(); |
| 0 | 461 return(0); |
| 462 } | |
| 463 | |
| 464 static void SVGA_DirectUpdate(_THIS, int numrects, SDL_Rect *rects) | |
| 465 { | |
| 466 return; | |
| 467 } | |
| 468 | |
| 469 /* FIXME: Can this be used under SVGAlib? */ | |
| 470 static void SVGA_BankedUpdate(_THIS, int numrects, SDL_Rect *rects) | |
| 471 { | |
| 472 return; | |
| 473 } | |
| 474 | |
| 475 int SVGA_SetColors(_THIS, int firstcolor, int ncolors, SDL_Color *colors) | |
| 476 { | |
| 477 int i; | |
| 478 | |
| 479 for(i = 0; i < ncolors; i++) { | |
| 480 vga_setpalette(firstcolor + i, | |
| 481 colors[i].r>>2, | |
| 482 colors[i].g>>2, | |
| 483 colors[i].b>>2); | |
| 484 } | |
| 485 return(1); | |
| 486 } | |
| 487 | |
| 488 /* Note: If we are terminated, this could be called in the middle of | |
| 489 another SDL video routine -- notably UpdateRects. | |
| 490 */ | |
| 491 void SVGA_VideoQuit(_THIS) | |
| 492 { | |
| 493 int i, j; | |
| 494 | |
| 495 /* Reset the console video mode */ | |
| 496 if ( this->screen && (this->screen->w && this->screen->h) ) { | |
| 497 vga_setmode(TEXT); | |
| 498 } | |
| 499 keyboard_close(); | |
| 500 | |
| 501 /* Free video mode lists */ | |
| 502 for ( i=0; i<NUM_MODELISTS; ++i ) { | |
| 503 if ( SDL_modelist[i] != NULL ) { | |
| 504 for ( j=0; SDL_modelist[i][j]; ++j ) | |
| 505 free(SDL_modelist[i][j]); | |
| 506 free(SDL_modelist[i]); | |
| 507 SDL_modelist[i] = NULL; | |
| 508 } | |
| 509 if ( SDL_vgamode[i] != NULL ) { | |
| 510 free(SDL_vgamode[i]); | |
| 511 SDL_vgamode[i] = NULL; | |
| 512 } | |
| 513 } | |
| 514 if ( this->screen && (this->screen->flags & SDL_HWSURFACE) ) { | |
| 515 /* Direct screen access, no memory buffer */ | |
| 516 this->screen->pixels = NULL; | |
| 517 } | |
| 518 } | |
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519 |