Mercurial > sdl-ios-xcode
annotate src/video/svga/SDL_svgavideo.c @ 1861:b42823412c3b
Fixed bug #232
------- Comment #2 From Matthias Geissert 2006-05-24 07:54 [reply] -------
See http://dri.sourceforge.net/doc/DRIuserguide.html, section 11.5. There is
written that you need to use RTLD_GLOBAL, since, otherwise, nested open of
dynamic libraries doesn't work. However, This is necassary in this case, since
libGL opens the hardware-specific driver/library. I hope this helps you.
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Tue, 20 Jun 2006 03:52:41 +0000 |
| parents | 011b633fa0c9 |
| children | 782fd950bd46 c121d94672cb a1b03ba2fcd0 |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 2 SDL - Simple DirectMedia Layer | |
|
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3 Copyright (C) 1997-2006 Sam Lantinga |
| 0 | 4 |
| 5 This library is free software; you can redistribute it and/or | |
|
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6 modify it under the terms of the GNU Lesser General Public |
| 0 | 7 License as published by the Free Software Foundation; either |
|
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8 version 2.1 of the License, or (at your option) any later version. |
| 0 | 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 | |
|
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13 Lesser General Public License for more details. |
| 0 | 14 |
|
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15 You should have received a copy of the GNU Lesser General Public |
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16 License along with this library; if not, write to the Free Software |
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17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
| 0 | 18 |
| 19 Sam Lantinga | |
|
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20 slouken@libsdl.org |
| 0 | 21 */ |
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22 #include "SDL_config.h" |
| 0 | 23 |
| 24 /* SVGAlib based SDL video driver implementation. | |
| 25 */ | |
| 26 | |
| 27 #include <unistd.h> | |
| 28 #include <sys/stat.h> | |
|
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29 #include <sys/types.h> |
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30 #include <sys/ioctl.h> |
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31 #include <fcntl.h> |
| 0 | 32 |
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33 #if defined(__LINUX__) |
| 0 | 34 #include <linux/vt.h> |
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35 #elif defined(__FREEBSD__) |
| 0 | 36 #include <sys/consio.h> |
| 37 #else | |
| 38 #error You must choose your operating system here | |
| 39 #endif | |
| 40 #include <vga.h> | |
| 41 #include <vgamouse.h> | |
| 42 #include <vgakeyboard.h> | |
| 43 | |
| 44 #include "SDL_video.h" | |
| 45 #include "SDL_mouse.h" | |
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46 #include "../SDL_sysvideo.h" |
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47 #include "../SDL_pixels_c.h" |
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48 #include "../../events/SDL_events_c.h" |
| 0 | 49 #include "SDL_svgavideo.h" |
| 50 #include "SDL_svgaevents_c.h" | |
| 51 #include "SDL_svgamouse_c.h" | |
| 52 | |
| 53 /* Initialization/Query functions */ | |
| 54 static int SVGA_VideoInit(_THIS, SDL_PixelFormat *vformat); | |
| 55 static SDL_Rect **SVGA_ListModes(_THIS, SDL_PixelFormat *format, Uint32 flags); | |
| 56 static SDL_Surface *SVGA_SetVideoMode(_THIS, SDL_Surface *current, int width, int height, int bpp, Uint32 flags); | |
| 57 static int SVGA_SetColors(_THIS, int firstcolor, int ncolors, | |
| 58 SDL_Color *colors); | |
| 59 static void SVGA_VideoQuit(_THIS); | |
| 60 | |
| 61 /* Hardware surface functions */ | |
| 62 static int SVGA_AllocHWSurface(_THIS, SDL_Surface *surface); | |
| 63 static int SVGA_LockHWSurface(_THIS, SDL_Surface *surface); | |
| 64 static int SVGA_FlipHWSurface(_THIS, SDL_Surface *surface); | |
| 65 static void SVGA_UnlockHWSurface(_THIS, SDL_Surface *surface); | |
| 66 static void SVGA_FreeHWSurface(_THIS, SDL_Surface *surface); | |
| 67 | |
| 68 /* SVGAlib driver bootstrap functions */ | |
| 69 | |
| 70 static int SVGA_Available(void) | |
| 71 { | |
| 72 /* Check to see if we are root and stdin is a virtual console */ | |
| 73 int console; | |
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74 |
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75 /* SVGALib 1.9.x+ doesn't require root (via /dev/svga) */ |
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76 int svgalib2 = -1; |
| 0 | 77 |
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78 /* See if we are connected to a virtual terminal */ |
| 0 | 79 console = STDIN_FILENO; |
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80 #if 0 /* This is no longer needed, SVGAlib can switch consoles for us */ |
| 0 | 81 if ( console >= 0 ) { |
| 82 struct stat sb; | |
| 83 struct vt_mode dummy; | |
| 84 | |
| 85 if ( (fstat(console, &sb) < 0) || | |
| 86 (ioctl(console, VT_GETMODE, &dummy) < 0) ) { | |
| 87 console = -1; | |
| 88 } | |
| 89 } | |
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90 #endif /* 0 */ |
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91 |
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92 /* See if SVGAlib 2.0 is available */ |
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93 svgalib2 = open("/dev/svga", O_RDONLY); |
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94 if (svgalib2 != -1) { |
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95 close(svgalib2); |
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96 } |
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97 |
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98 return(((svgalib2 != -1) || (geteuid() == 0)) && (console >= 0)); |
| 0 | 99 } |
| 100 | |
| 101 static void SVGA_DeleteDevice(SDL_VideoDevice *device) | |
| 102 { | |
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103 SDL_free(device->hidden); |
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104 SDL_free(device); |
| 0 | 105 } |
| 106 | |
| 107 static SDL_VideoDevice *SVGA_CreateDevice(int devindex) | |
| 108 { | |
| 109 SDL_VideoDevice *device; | |
| 110 | |
| 111 /* Initialize all variables that we clean on shutdown */ | |
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112 device = (SDL_VideoDevice *)SDL_malloc(sizeof(SDL_VideoDevice)); |
| 0 | 113 if ( device ) { |
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114 SDL_memset(device, 0, (sizeof *device)); |
| 0 | 115 device->hidden = (struct SDL_PrivateVideoData *) |
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116 SDL_malloc((sizeof *device->hidden)); |
| 0 | 117 } |
| 118 if ( (device == NULL) || (device->hidden == NULL) ) { | |
| 119 SDL_OutOfMemory(); | |
| 120 if ( device ) { | |
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121 SDL_free(device); |
| 0 | 122 } |
| 123 return(0); | |
| 124 } | |
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125 SDL_memset(device->hidden, 0, (sizeof *device->hidden)); |
| 0 | 126 |
| 127 /* Set the function pointers */ | |
| 128 device->VideoInit = SVGA_VideoInit; | |
| 129 device->ListModes = SVGA_ListModes; | |
| 130 device->SetVideoMode = SVGA_SetVideoMode; | |
| 131 device->SetColors = SVGA_SetColors; | |
| 132 device->UpdateRects = NULL; | |
| 133 device->VideoQuit = SVGA_VideoQuit; | |
| 134 device->AllocHWSurface = SVGA_AllocHWSurface; | |
| 135 device->CheckHWBlit = NULL; | |
| 136 device->FillHWRect = NULL; | |
| 137 device->SetHWColorKey = NULL; | |
| 138 device->SetHWAlpha = NULL; | |
| 139 device->LockHWSurface = SVGA_LockHWSurface; | |
| 140 device->UnlockHWSurface = SVGA_UnlockHWSurface; | |
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141 device->FlipHWSurface = SVGA_FlipHWSurface; |
| 0 | 142 device->FreeHWSurface = SVGA_FreeHWSurface; |
| 143 device->SetCaption = NULL; | |
| 144 device->SetIcon = NULL; | |
| 145 device->IconifyWindow = NULL; | |
| 146 device->GrabInput = NULL; | |
| 147 device->GetWMInfo = NULL; | |
| 148 device->InitOSKeymap = SVGA_InitOSKeymap; | |
| 149 device->PumpEvents = SVGA_PumpEvents; | |
| 150 | |
| 151 device->free = SVGA_DeleteDevice; | |
| 152 | |
| 153 return device; | |
| 154 } | |
| 155 | |
| 156 VideoBootStrap SVGALIB_bootstrap = { | |
| 157 "svgalib", "SVGAlib", | |
| 158 SVGA_Available, SVGA_CreateDevice | |
| 159 }; | |
| 160 | |
| 1556 | 161 static int SVGA_AddMode(_THIS, int mode, int actually_add) |
| 0 | 162 { |
| 1556 | 163 int i, j; |
| 0 | 164 vga_modeinfo *modeinfo; |
| 165 | |
| 166 modeinfo = vga_getmodeinfo(mode); | |
| 167 | |
| 1556 | 168 i = modeinfo->bytesperpixel-1; |
| 169 if ( i < 0 ) { | |
| 170 return 0; | |
| 171 } | |
| 172 if ( actually_add ) { | |
| 173 SDL_Rect saved_rect[2]; | |
| 174 int saved_mode[2]; | |
| 175 int b; | |
| 0 | 176 |
| 1556 | 177 /* Add the mode, sorted largest to smallest */ |
| 178 b = 0; | |
| 179 j = 0; | |
| 180 while ( (SDL_modelist[i][j]->w > modeinfo->width) || | |
| 181 (SDL_modelist[i][j]->h > modeinfo->height) ) { | |
| 182 ++j; | |
| 183 } | |
| 184 /* Skip modes that are already in our list */ | |
| 185 if ( (SDL_modelist[i][j]->w == modeinfo->width) && | |
| 186 (SDL_modelist[i][j]->h == modeinfo->height) ) { | |
| 187 return(0); | |
| 0 | 188 } |
| 1556 | 189 /* Insert the new mode */ |
| 190 saved_rect[b] = *SDL_modelist[i][j]; | |
| 191 saved_mode[b] = SDL_vgamode[i][j]; | |
| 192 SDL_modelist[i][j]->w = modeinfo->width; | |
| 193 SDL_modelist[i][j]->h = modeinfo->height; | |
| 194 SDL_vgamode[i][j] = mode; | |
| 195 /* Everybody scoot down! */ | |
| 196 if ( saved_rect[b].w && saved_rect[b].h ) { | |
| 197 for ( ++j; SDL_modelist[i][j]->w; ++j ) { | |
| 198 saved_rect[!b] = *SDL_modelist[i][j]; | |
| 199 saved_mode[!b] = SDL_vgamode[i][j]; | |
| 200 *SDL_modelist[i][j] = saved_rect[b]; | |
| 201 SDL_vgamode[i][j] = saved_mode[b]; | |
| 202 b = !b; | |
| 203 } | |
| 204 *SDL_modelist[i][j] = saved_rect[b]; | |
| 205 SDL_vgamode[i][j] = saved_mode[b]; | |
| 206 } | |
| 207 } else { | |
| 208 ++SDL_nummodes[i]; | |
| 0 | 209 } |
| 1556 | 210 return(1); |
| 0 | 211 } |
| 212 | |
| 213 static void SVGA_UpdateVideoInfo(_THIS) | |
| 214 { | |
| 215 vga_modeinfo *modeinfo; | |
| 216 | |
| 217 this->info.wm_available = 0; | |
| 1556 | 218 this->info.hw_available = (banked ? 0 : 1); |
| 0 | 219 modeinfo = vga_getmodeinfo(vga_getcurrentmode()); |
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220 this->info.video_mem = modeinfo->memory; |
| 0 | 221 /* FIXME: Add hardware accelerated blit information */ |
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222 #ifdef SVGALIB_DEBUG |
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223 printf("Hardware accelerated blit: %savailable\n", modeinfo->haveblit ? "" : "not "); |
| 0 | 224 #endif |
| 225 } | |
| 226 | |
| 227 int SVGA_VideoInit(_THIS, SDL_PixelFormat *vformat) | |
| 228 { | |
| 229 int keyboard; | |
| 230 int i, j; | |
| 231 int mode, total_modes; | |
| 232 | |
| 233 /* Initialize all variables that we clean on shutdown */ | |
| 234 for ( i=0; i<NUM_MODELISTS; ++i ) { | |
| 235 SDL_nummodes[i] = 0; | |
| 236 SDL_modelist[i] = NULL; | |
| 237 SDL_vgamode[i] = NULL; | |
| 238 } | |
| 239 | |
| 240 /* Initialize the library */ | |
| 241 vga_disabledriverreport(); | |
| 242 if ( vga_init() < 0 ) { | |
| 243 SDL_SetError("Unable to initialize SVGAlib"); | |
| 244 return(-1); | |
| 245 } | |
| 246 vga_setmode(TEXT); | |
| 247 | |
| 248 /* Enable mouse and keyboard support */ | |
| 249 vga_setmousesupport(1); | |
| 250 keyboard = keyboard_init_return_fd(); | |
| 251 if ( keyboard < 0 ) { | |
| 252 SDL_SetError("Unable to initialize keyboard"); | |
| 253 return(-1); | |
| 254 } | |
| 255 if ( SVGA_initkeymaps(keyboard) < 0 ) { | |
| 256 return(-1); | |
| 257 } | |
| 258 keyboard_seteventhandler(SVGA_keyboardcallback); | |
| 259 | |
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260 /* Determine the current screen size */ |
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261 this->info.current_w = 0; |
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262 this->info.current_h = 0; |
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263 |
| 0 | 264 /* Determine the screen depth (use default 8-bit depth) */ |
| 265 vformat->BitsPerPixel = 8; | |
| 266 | |
| 267 /* Enumerate the available fullscreen modes */ | |
| 268 total_modes = 0; | |
| 269 for ( mode=vga_lastmodenumber(); mode; --mode ) { | |
| 270 if ( vga_hasmode(mode) ) { | |
| 1556 | 271 if ( SVGA_AddMode(this, mode, 0) ) { |
| 0 | 272 ++total_modes; |
| 273 } | |
| 274 } | |
| 275 } | |
| 1556 | 276 if ( SVGA_AddMode(this, G320x200x256, 0) ) ++total_modes; |
| 0 | 277 if ( total_modes == 0 ) { |
| 278 SDL_SetError("No linear video modes available"); | |
| 279 return(-1); | |
| 280 } | |
| 281 for ( i=0; i<NUM_MODELISTS; ++i ) { | |
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282 SDL_vgamode[i] = (int *)SDL_malloc(SDL_nummodes[i]*sizeof(int)); |
| 0 | 283 if ( SDL_vgamode[i] == NULL ) { |
| 284 SDL_OutOfMemory(); | |
| 285 return(-1); | |
| 286 } | |
| 287 SDL_modelist[i] = (SDL_Rect **) | |
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288 SDL_malloc((SDL_nummodes[i]+1)*sizeof(SDL_Rect *)); |
| 0 | 289 if ( SDL_modelist[i] == NULL ) { |
| 290 SDL_OutOfMemory(); | |
| 291 return(-1); | |
| 292 } | |
| 293 for ( j=0; j<SDL_nummodes[i]; ++j ) { | |
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294 SDL_modelist[i][j]=(SDL_Rect *)SDL_malloc(sizeof(SDL_Rect)); |
| 0 | 295 if ( SDL_modelist[i][j] == NULL ) { |
| 296 SDL_OutOfMemory(); | |
| 297 return(-1); | |
| 298 } | |
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299 SDL_memset(SDL_modelist[i][j], 0, sizeof(SDL_Rect)); |
| 0 | 300 } |
| 301 SDL_modelist[i][j] = NULL; | |
| 302 } | |
| 303 for ( mode=vga_lastmodenumber(); mode; --mode ) { | |
| 304 if ( vga_hasmode(mode) ) { | |
| 1556 | 305 SVGA_AddMode(this, mode, 1); |
| 0 | 306 } |
| 307 } | |
| 1556 | 308 SVGA_AddMode(this, G320x200x256, 1); |
| 0 | 309 |
| 310 /* Free extra (duplicated) modes */ | |
| 311 for ( i=0; i<NUM_MODELISTS; ++i ) { | |
| 312 j = 0; | |
| 313 while ( SDL_modelist[i][j] && SDL_modelist[i][j]->w ) { | |
| 314 j++; | |
| 315 } | |
| 316 while ( SDL_modelist[i][j] ) { | |
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317 SDL_free(SDL_modelist[i][j]); |
| 0 | 318 SDL_modelist[i][j] = NULL; |
| 319 j++; | |
| 320 } | |
| 321 } | |
| 322 | |
| 323 /* Fill in our hardware acceleration capabilities */ | |
| 324 SVGA_UpdateVideoInfo(this); | |
| 325 | |
| 326 /* We're done! */ | |
| 327 return(0); | |
| 328 } | |
| 329 | |
| 330 SDL_Rect **SVGA_ListModes(_THIS, SDL_PixelFormat *format, Uint32 flags) | |
| 331 { | |
| 332 return(SDL_modelist[((format->BitsPerPixel+7)/8)-1]); | |
| 333 } | |
| 334 | |
| 335 /* Various screen update functions available */ | |
| 336 static void SVGA_DirectUpdate(_THIS, int numrects, SDL_Rect *rects); | |
| 337 static void SVGA_BankedUpdate(_THIS, int numrects, SDL_Rect *rects); | |
| 338 | |
| 339 SDL_Surface *SVGA_SetVideoMode(_THIS, SDL_Surface *current, | |
| 340 int width, int height, int bpp, Uint32 flags) | |
| 341 { | |
| 342 int mode; | |
| 343 int vgamode; | |
| 344 vga_modeinfo *modeinfo; | |
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345 int screenpage_len; |
| 0 | 346 |
| 1556 | 347 /* Free old pixels if we were in banked mode */ |
| 348 if ( banked && current->pixels ) { | |
| 349 free(current->pixels); | |
| 350 current->pixels = NULL; | |
| 1554 | 351 } |
| 352 | |
| 0 | 353 /* Try to set the requested linear video mode */ |
| 354 bpp = (bpp+7)/8-1; | |
| 355 for ( mode=0; SDL_modelist[bpp][mode]; ++mode ) { | |
| 356 if ( (SDL_modelist[bpp][mode]->w == width) && | |
| 357 (SDL_modelist[bpp][mode]->h == height) ) { | |
| 358 break; | |
| 359 } | |
| 360 } | |
| 361 if ( SDL_modelist[bpp][mode] == NULL ) { | |
| 362 SDL_SetError("Couldn't find requested mode in list"); | |
| 363 return(NULL); | |
| 364 } | |
| 1554 | 365 vgamode = SDL_vgamode[bpp][mode]; |
| 366 vga_setmode(vgamode); | |
| 0 | 367 vga_setpage(0); |
| 368 | |
| 1554 | 369 if ( (vga_setlinearaddressing() < 0) && (vgamode != G320x200x256) ) { |
| 1556 | 370 banked = 1; |
| 371 } else { | |
| 372 banked = 0; | |
| 0 | 373 } |
| 1554 | 374 |
| 0 | 375 modeinfo = vga_getmodeinfo(SDL_vgamode[bpp][mode]); |
| 376 | |
| 377 /* Update hardware acceleration info */ | |
| 378 SVGA_UpdateVideoInfo(this); | |
| 379 | |
| 380 /* Allocate the new pixel format for the screen */ | |
| 381 bpp = (bpp+1)*8; | |
| 382 if ( (bpp == 16) && (modeinfo->colors == 32768) ) { | |
| 383 bpp = 15; | |
| 384 } | |
| 385 if ( ! SDL_ReallocFormat(current, bpp, 0, 0, 0, 0) ) { | |
| 386 return(NULL); | |
| 387 } | |
| 388 | |
| 389 /* Set up the new mode framebuffer */ | |
| 1554 | 390 current->flags = SDL_FULLSCREEN; |
| 1556 | 391 if ( !banked ) { |
| 1554 | 392 current->flags |= SDL_HWSURFACE; |
| 393 } | |
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394 if ( bpp == 8 ) { |
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395 /* FIXME: What about DirectColor? */ |
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396 current->flags |= SDL_HWPALETTE; |
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397 } |
| 0 | 398 current->w = width; |
| 399 current->h = height; | |
| 400 current->pitch = modeinfo->linewidth; | |
| 1556 | 401 if ( banked ) { |
| 402 current->pixels = SDL_malloc(current->h * current->pitch); | |
| 403 if ( !current->pixels ) { | |
| 404 SDL_OutOfMemory(); | |
| 405 return(NULL); | |
| 406 } | |
| 1554 | 407 } else { |
| 408 current->pixels = vga_getgraphmem(); | |
| 409 } | |
| 0 | 410 |
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411 /* set double-buffering */ |
| 1556 | 412 if ( (flags & SDL_DOUBLEBUF) && !banked ) |
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413 { |
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414 /* length of one screen page in bytes */ |
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415 screenpage_len=current->h*modeinfo->linewidth; |
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416 |
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417 /* if start address should be aligned */ |
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418 if ( modeinfo->linewidth_unit ) |
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419 { |
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420 if ( screenpage_len % modeinfo->linewidth_unit ) |
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421 { |
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422 screenpage_len += modeinfo->linewidth_unit - ( screenpage_len % modeinfo->linewidth_unit ); |
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423 } |
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424 } |
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425 |
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426 /* if we heve enough videomemory = ak je dost videopamete */ |
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427 if ( modeinfo->memory > ( screenpage_len * 2 / 1024 ) ) |
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428 { |
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429 current->flags |= SDL_DOUBLEBUF; |
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430 flip_page = 0; |
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431 flip_offset[0] = 0; |
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432 flip_offset[1] = screenpage_len; |
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433 flip_address[0] = vga_getgraphmem(); |
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434 flip_address[1] = flip_address[0]+screenpage_len; |
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435 SVGA_FlipHWSurface(this,current); |
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436 } |
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437 } |
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438 |
| 0 | 439 /* Set the blit function */ |
| 1556 | 440 if ( banked ) { |
| 1554 | 441 this->UpdateRects = SVGA_BankedUpdate; |
| 442 } else { | |
| 443 this->UpdateRects = SVGA_DirectUpdate; | |
| 444 } | |
| 0 | 445 |
| 446 /* Set up the mouse handler again (buggy SVGAlib 1.40) */ | |
| 447 mouse_seteventhandler(SVGA_mousecallback); | |
| 448 | |
| 449 /* We're done */ | |
| 450 return(current); | |
| 451 } | |
| 452 | |
| 453 /* We don't actually allow hardware surfaces other than the main one */ | |
| 454 static int SVGA_AllocHWSurface(_THIS, SDL_Surface *surface) | |
| 455 { | |
| 456 return(-1); | |
| 457 } | |
| 458 static void SVGA_FreeHWSurface(_THIS, SDL_Surface *surface) | |
| 459 { | |
| 460 return; | |
| 461 } | |
| 462 | |
| 463 /* We need to wait for vertical retrace on page flipped displays */ | |
| 464 static int SVGA_LockHWSurface(_THIS, SDL_Surface *surface) | |
| 465 { | |
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466 /* The waiting is done in SVGA_FlipHWSurface() */ |
| 0 | 467 return(0); |
| 468 } | |
| 469 static void SVGA_UnlockHWSurface(_THIS, SDL_Surface *surface) | |
| 470 { | |
| 471 return; | |
| 472 } | |
| 473 | |
| 474 static int SVGA_FlipHWSurface(_THIS, SDL_Surface *surface) | |
| 475 { | |
| 1556 | 476 if ( !banked ) { |
| 1554 | 477 vga_setdisplaystart(flip_offset[flip_page]); |
| 478 flip_page=!flip_page; | |
| 479 surface->pixels=flip_address[flip_page]; | |
| 480 vga_waitretrace(); | |
| 481 } | |
| 0 | 482 return(0); |
| 483 } | |
| 484 | |
| 485 static void SVGA_DirectUpdate(_THIS, int numrects, SDL_Rect *rects) | |
| 486 { | |
| 487 return; | |
| 488 } | |
| 489 | |
| 490 static void SVGA_BankedUpdate(_THIS, int numrects, SDL_Rect *rects) | |
| 491 { | |
| 1556 | 492 int i, j; |
| 1554 | 493 SDL_Rect *rect; |
| 1556 | 494 int page, vp; |
| 495 int x, y, w, h; | |
| 496 unsigned char *src; | |
| 497 unsigned char *dst; | |
| 498 int bpp = this->screen->format->BytesPerPixel; | |
| 499 int pitch = this->screen->pitch; | |
| 1554 | 500 |
| 1556 | 501 dst = vga_getgraphmem(); |
| 1554 | 502 for ( i=0; i < numrects; ++i ) { |
| 503 rect = &rects[i]; | |
| 1556 | 504 x = rect->x; |
| 505 y = rect->y; | |
| 506 w = rect->w * bpp; | |
| 507 h = rect->h; | |
| 508 | |
| 509 vp = y * pitch + x * bpp; | |
| 510 src = (unsigned char *)this->screen->pixels + vp; | |
| 511 page = vp >> 16; | |
| 512 vp &= 0xffff; | |
| 513 vga_setpage(page); | |
| 514 for (j = 0; j < h; j++) { | |
| 515 if (vp + w > 0x10000) { | |
| 516 if (vp >= 0x10000) { | |
| 517 page++; | |
| 518 vga_setpage(page); | |
| 519 vp &= 0xffff; | |
| 520 } else { | |
| 521 SDL_memcpy(dst + vp, src, 0x10000 - vp); | |
| 522 page++; | |
| 523 vga_setpage(page); | |
| 524 SDL_memcpy(dst, src + 0x10000 - vp, | |
| 525 (vp + w) & 0xffff); | |
| 526 vp = (vp + pitch) & 0xffff; | |
| 527 src += pitch; | |
| 528 continue; | |
| 529 } | |
| 530 } | |
| 531 SDL_memcpy(dst + vp, src, w); | |
| 532 src += pitch; | |
| 533 vp += pitch; | |
| 534 } | |
| 1554 | 535 } |
| 0 | 536 } |
| 537 | |
| 538 int SVGA_SetColors(_THIS, int firstcolor, int ncolors, SDL_Color *colors) | |
| 539 { | |
| 540 int i; | |
| 541 | |
| 542 for(i = 0; i < ncolors; i++) { | |
| 543 vga_setpalette(firstcolor + i, | |
| 544 colors[i].r>>2, | |
| 545 colors[i].g>>2, | |
| 546 colors[i].b>>2); | |
| 547 } | |
| 548 return(1); | |
| 549 } | |
| 550 | |
| 551 /* Note: If we are terminated, this could be called in the middle of | |
| 552 another SDL video routine -- notably UpdateRects. | |
| 553 */ | |
| 554 void SVGA_VideoQuit(_THIS) | |
| 555 { | |
| 556 int i, j; | |
| 557 | |
| 558 /* Reset the console video mode */ | |
| 559 if ( this->screen && (this->screen->w && this->screen->h) ) { | |
| 560 vga_setmode(TEXT); | |
| 561 } | |
| 562 keyboard_close(); | |
| 563 | |
| 564 /* Free video mode lists */ | |
| 565 for ( i=0; i<NUM_MODELISTS; ++i ) { | |
| 566 if ( SDL_modelist[i] != NULL ) { | |
| 567 for ( j=0; SDL_modelist[i][j]; ++j ) | |
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568 SDL_free(SDL_modelist[i][j]); |
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569 SDL_free(SDL_modelist[i]); |
| 0 | 570 SDL_modelist[i] = NULL; |
| 571 } | |
| 572 if ( SDL_vgamode[i] != NULL ) { | |
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573 SDL_free(SDL_vgamode[i]); |
| 0 | 574 SDL_vgamode[i] = NULL; |
| 575 } | |
| 576 } | |
| 1556 | 577 if ( this->screen ) { |
| 578 if ( banked && this->screen->pixels ) { | |
| 579 SDL_free(this->screen->pixels); | |
| 580 } | |
| 0 | 581 this->screen->pixels = NULL; |
| 582 } | |
| 583 } | |
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584 |