| 1 | /* |
| 2 | SDL - Simple DirectMedia Layer |
| 3 | Copyright (C) 1997-2009 Sam Lantinga |
| 4 | |
| 5 | This library is free software; you can redistribute it and/or |
| 6 | modify it under the terms of the GNU Lesser General Public |
| 7 | License as published by the Free Software Foundation; either |
| 8 | version 2.1 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 | Lesser General Public License for more details. |
| 14 | |
| 15 | You should have received a copy of the GNU Lesser General Public |
| 16 | License along with this library; if not, write to the Free Software |
| 17 | Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
| 18 | |
| 19 | Sam Lantinga |
| 20 | slouken@libsdl.org |
| 21 | */ |
| 22 | #include "SDL_config.h" |
| 23 | |
| 24 | /* libvga based SDL video driver implementation. |
| 25 | */ |
| 26 | |
| 27 | #include <err.h> |
| 28 | #include <osreldate.h> |
| 29 | #include <unistd.h> |
| 30 | #include <sys/stat.h> |
| 31 | |
| 32 | #include <sys/fbio.h> |
| 33 | #include <sys/consio.h> |
| 34 | #include <sys/kbio.h> |
| 35 | #include <vgl.h> |
| 36 | |
| 37 | #include "SDL_video.h" |
| 38 | #include "SDL_mouse.h" |
| 39 | #include "../SDL_sysvideo.h" |
| 40 | #include "../SDL_pixels_c.h" |
| 41 | #include "../../events/SDL_events_c.h" |
| 42 | #include "SDL_vglvideo.h" |
| 43 | #include "SDL_vglevents_c.h" |
| 44 | #include "SDL_vglmouse_c.h" |
| 45 | |
| 46 | |
| 47 | /* Initialization/Query functions */ |
| 48 | static int VGL_VideoInit(_THIS, SDL_PixelFormat *vformat); |
| 49 | static SDL_Rect **VGL_ListModes(_THIS, SDL_PixelFormat *format, Uint32 flags); |
| 50 | static SDL_Surface *VGL_SetVideoMode(_THIS, SDL_Surface *current, int width, int height, int bpp, Uint32 flags); |
| 51 | static int VGL_SetColors(_THIS, int firstcolor, int ncolors, |
| 52 | SDL_Color *colors); |
| 53 | static void VGL_VideoQuit(_THIS); |
| 54 | |
| 55 | /* Hardware surface functions */ |
| 56 | static int VGL_AllocHWSurface(_THIS, SDL_Surface *surface); |
| 57 | static int VGL_LockHWSurface(_THIS, SDL_Surface *surface); |
| 58 | static int VGL_FlipHWSurface(_THIS, SDL_Surface *surface); |
| 59 | static void VGL_UnlockHWSurface(_THIS, SDL_Surface *surface); |
| 60 | static void VGL_FreeHWSurface(_THIS, SDL_Surface *surface); |
| 61 | |
| 62 | /* Misc function */ |
| 63 | static VGLMode ** VGLListModes(int depth, int mem_model); |
| 64 | static void VGLWaitRetrace(void); |
| 65 | |
| 66 | /* VGL driver bootstrap functions */ |
| 67 | |
| 68 | static int VGL_Available(void) |
| 69 | { |
| 70 | /* |
| 71 | * Check to see if we are root and stdin is a |
| 72 | * virtual console. Also try to ensure that |
| 73 | * modes other than 320x200 are available |
| 74 | */ |
| 75 | int console, hires_available, i; |
| 76 | VGLMode **modes; |
| 77 | |
| 78 | console = STDIN_FILENO; |
| 79 | if ( console >= 0 ) { |
| 80 | struct stat sb; |
| 81 | struct vt_mode dummy; |
| 82 | |
| 83 | if ( (fstat(console, &sb) < 0) || |
| 84 | (ioctl(console, VT_GETMODE, &dummy) < 0) ) { |
| 85 | console = -1; |
| 86 | } |
| 87 | } |
| 88 | if (geteuid() != 0 && console == -1) |
| 89 | return 0; |
| 90 | |
| 91 | modes = VGLListModes(8, V_INFO_MM_DIRECT | V_INFO_MM_PACKED); |
| 92 | hires_available = 0; |
| 93 | for (i = 0; modes[i] != NULL; i++) { |
| 94 | if ((modes[i]->ModeInfo.Xsize > 320) && |
| 95 | (modes[i]->ModeInfo.Ysize > 200) && |
| 96 | ((modes[i]->ModeInfo.Type == VIDBUF8) || |
| 97 | (modes[i]->ModeInfo.Type == VIDBUF16) || |
| 98 | (modes[i]->ModeInfo.Type == VIDBUF32))) { |
| 99 | hires_available = 1; |
| 100 | break; |
| 101 | } |
| 102 | } |
| 103 | return hires_available; |
| 104 | } |
| 105 | |
| 106 | static void VGL_DeleteDevice(SDL_VideoDevice *device) |
| 107 | { |
| 108 | SDL_free(device->hidden); |
| 109 | SDL_free(device); |
| 110 | } |
| 111 | |
| 112 | static SDL_VideoDevice *VGL_CreateDevice(int devindex) |
| 113 | { |
| 114 | SDL_VideoDevice *device; |
| 115 | |
| 116 | /* Initialize all variables that we clean on shutdown */ |
| 117 | device = (SDL_VideoDevice *)SDL_malloc(sizeof(SDL_VideoDevice)); |
| 118 | if ( device ) { |
| 119 | SDL_memset(device, 0, (sizeof *device)); |
| 120 | device->hidden = (struct SDL_PrivateVideoData *) |
| 121 | SDL_malloc((sizeof *device->hidden)); |
| 122 | } |
| 123 | if ( (device == NULL) || (device->hidden == NULL) ) { |
| 124 | SDL_OutOfMemory(); |
| 125 | if ( device ) { |
| 126 | SDL_free(device); |
| 127 | } |
| 128 | return(0); |
| 129 | } |
| 130 | SDL_memset(device->hidden, 0, (sizeof *device->hidden)); |
| 131 | |
| 132 | /* Set the function pointers */ |
| 133 | device->VideoInit = VGL_VideoInit; |
| 134 | device->ListModes = VGL_ListModes; |
| 135 | device->SetVideoMode = VGL_SetVideoMode; |
| 136 | device->SetColors = VGL_SetColors; |
| 137 | device->UpdateRects = NULL; |
| 138 | device->VideoQuit = VGL_VideoQuit; |
| 139 | device->AllocHWSurface = VGL_AllocHWSurface; |
| 140 | device->CheckHWBlit = NULL; |
| 141 | device->FillHWRect = NULL; |
| 142 | device->SetHWColorKey = NULL; |
| 143 | device->SetHWAlpha = NULL; |
| 144 | device->LockHWSurface = VGL_LockHWSurface; |
| 145 | device->UnlockHWSurface = VGL_UnlockHWSurface; |
| 146 | device->FlipHWSurface = VGL_FlipHWSurface; |
| 147 | device->FreeHWSurface = VGL_FreeHWSurface; |
| 148 | device->SetIcon = NULL; |
| 149 | device->SetCaption = NULL; |
| 150 | device->GetWMInfo = NULL; |
| 151 | device->FreeWMCursor = VGL_FreeWMCursor; |
| 152 | device->CreateWMCursor = VGL_CreateWMCursor; |
| 153 | device->ShowWMCursor = VGL_ShowWMCursor; |
| 154 | device->WarpWMCursor = VGL_WarpWMCursor; |
| 155 | device->InitOSKeymap = VGL_InitOSKeymap; |
| 156 | device->PumpEvents = VGL_PumpEvents; |
| 157 | |
| 158 | device->free = VGL_DeleteDevice; |
| 159 | |
| 160 | return device; |
| 161 | } |
| 162 | |
| 163 | VideoBootStrap VGL_bootstrap = { |
| 164 | "vgl", "FreeBSD libVGL", |
| 165 | VGL_Available, VGL_CreateDevice |
| 166 | }; |
| 167 | |
| 168 | static int VGL_AddMode(_THIS, VGLMode *inmode) |
| 169 | { |
| 170 | SDL_Rect *mode; |
| 171 | |
| 172 | int i, index; |
| 173 | int next_mode; |
| 174 | |
| 175 | /* Check to see if we already have this mode */ |
| 176 | if (inmode->Depth < 8) { /* Not supported */ |
| 177 | return 0; |
| 178 | } |
| 179 | index = ((inmode->Depth + 7) / 8) - 1; |
| 180 | for (i=0; i<SDL_nummodes[index]; ++i) { |
| 181 | mode = SDL_modelist[index][i]; |
| 182 | if ((mode->w == inmode->ModeInfo.Xsize) && |
| 183 | (mode->h == inmode->ModeInfo.Ysize)) |
| 184 | return 0; |
| 185 | } |
| 186 | |
| 187 | /* Set up the new video mode rectangle */ |
| 188 | mode = (SDL_Rect *)SDL_malloc(sizeof *mode); |
| 189 | if (mode == NULL) { |
| 190 | SDL_OutOfMemory(); |
| 191 | return -1; |
| 192 | } |
| 193 | mode->x = 0; |
| 194 | mode->y = 0; |
| 195 | mode->w = inmode->ModeInfo.Xsize; |
| 196 | mode->h = inmode->ModeInfo.Ysize; |
| 197 | |
| 198 | /* Allocate the new list of modes, and fill in the new mode */ |
| 199 | next_mode = SDL_nummodes[index]; |
| 200 | SDL_modelist[index] = (SDL_Rect **) |
| 201 | SDL_realloc(SDL_modelist[index], (1+next_mode+1)*sizeof(SDL_Rect *)); |
| 202 | if (SDL_modelist[index] == NULL) { |
| 203 | SDL_OutOfMemory(); |
| 204 | SDL_nummodes[index] = 0; |
| 205 | SDL_free(mode); |
| 206 | return -1; |
| 207 | } |
| 208 | SDL_modelist[index][next_mode] = mode; |
| 209 | SDL_modelist[index][next_mode+1] = NULL; |
| 210 | SDL_nummodes[index]++; |
| 211 | |
| 212 | return 0; |
| 213 | } |
| 214 | |
| 215 | static void VGL_UpdateVideoInfo(_THIS) |
| 216 | { |
| 217 | this->info.wm_available = 0; |
| 218 | this->info.hw_available = 1; |
| 219 | this->info.video_mem = 0; |
| 220 | if (VGLCurMode == NULL) { |
| 221 | return; |
| 222 | } |
| 223 | if (VGLCurMode->ModeInfo.PixelBytes > 0) { |
| 224 | this->info.video_mem = VGLCurMode->ModeInfo.PixelBytes * |
| 225 | VGLCurMode->ModeInfo.Xsize * |
| 226 | VGLCurMode->ModeInfo.Ysize; |
| 227 | } |
| 228 | } |
| 229 | |
| 230 | int VGL_VideoInit(_THIS, SDL_PixelFormat *vformat) |
| 231 | { |
| 232 | int i; |
| 233 | int total_modes; |
| 234 | VGLMode **modes; |
| 235 | |
| 236 | /* Initialize all variables that we clean on shutdown */ |
| 237 | for ( i=0; i<NUM_MODELISTS; ++i ) { |
| 238 | SDL_nummodes[i] = 0; |
| 239 | SDL_modelist[i] = NULL; |
| 240 | } |
| 241 | |
| 242 | /* Enable mouse and keyboard support */ |
| 243 | if (SDL_getenv("SDL_NO_RAWKBD") == NULL) { |
| 244 | if (VGLKeyboardInit(VGL_CODEKEYS) != 0) { |
| 245 | SDL_SetError("Unable to initialize keyboard"); |
| 246 | return -1; |
| 247 | } |
| 248 | } else { |
| 249 | warnx("Requiest to put keyboard into a raw mode ignored"); |
| 250 | } |
| 251 | if (VGL_initkeymaps(STDIN_FILENO) != 0) { |
| 252 | SDL_SetError("Unable to initialize keymap"); |
| 253 | return -1; |
| 254 | } |
| 255 | if (VGL_initmouse(STDIN_FILENO) != 0) { |
| 256 | SDL_SetError("Unable to initialize mouse"); |
| 257 | return -1; |
| 258 | } |
| 259 | |
| 260 | /* Determine the current screen size */ |
| 261 | if (VGLCurMode != NULL) { |
| 262 | this->info.current_w = VGLCurMode->ModeInfo.Xsize; |
| 263 | this->info.current_h = VGLCurMode->ModeInfo.Ysize; |
| 264 | } |
| 265 | |
| 266 | /* Determine the screen depth */ |
| 267 | if (VGLCurMode != NULL) |
| 268 | vformat->BitsPerPixel = VGLCurMode->Depth; |
| 269 | else |
| 270 | vformat->BitsPerPixel = 16; /* Good default */ |
| 271 | |
| 272 | /* Query for the list of available video modes */ |
| 273 | total_modes = 0; |
| 274 | modes = VGLListModes(-1, V_INFO_MM_DIRECT | V_INFO_MM_PACKED); |
| 275 | for (i = 0; modes[i] != NULL; i++) { |
| 276 | if ((modes[i]->ModeInfo.Type == VIDBUF8) || |
| 277 | (modes[i]->ModeInfo.Type == VIDBUF16) || |
| 278 | (modes[i]->ModeInfo.Type == VIDBUF32)) { |
| 279 | VGL_AddMode(this, modes[i]); |
| 280 | total_modes++; |
| 281 | } |
| 282 | } |
| 283 | if (total_modes == 0) { |
| 284 | SDL_SetError("No linear video modes available"); |
| 285 | return -1; |
| 286 | } |
| 287 | |
| 288 | /* Fill in our hardware acceleration capabilities */ |
| 289 | VGL_UpdateVideoInfo(this); |
| 290 | |
| 291 | /* Create the hardware surface lock mutex */ |
| 292 | hw_lock = SDL_CreateMutex(); |
| 293 | if (hw_lock == NULL) { |
| 294 | SDL_SetError("Unable to create lock mutex"); |
| 295 | VGL_VideoQuit(this); |
| 296 | return -1; |
| 297 | } |
| 298 | |
| 299 | /* We're done! */ |
| 300 | return 0; |
| 301 | } |
| 302 | |
| 303 | SDL_Rect **VGL_ListModes(_THIS, SDL_PixelFormat *format, Uint32 flags) |
| 304 | { |
| 305 | return SDL_modelist[((format->BitsPerPixel+7)/8)-1]; |
| 306 | } |
| 307 | |
| 308 | /* Various screen update functions available */ |
| 309 | static void VGL_DirectUpdate(_THIS, int numrects, SDL_Rect *rects); |
| 310 | static void VGL_BankedUpdate(_THIS, int numrects, SDL_Rect *rects); |
| 311 | |
| 312 | SDL_Surface *VGL_SetVideoMode(_THIS, SDL_Surface *current, |
| 313 | int width, int height, int bpp, Uint32 flags) |
| 314 | { |
| 315 | int mode_found; |
| 316 | int i; |
| 317 | VGLMode **modes; |
| 318 | |
| 319 | modes = VGLListModes(bpp, V_INFO_MM_DIRECT | V_INFO_MM_PACKED); |
| 320 | mode_found = 0; |
| 321 | for (i = 0; modes[i] != NULL; i++) { |
| 322 | if ((modes[i]->ModeInfo.Xsize == width) && |
| 323 | (modes[i]->ModeInfo.Ysize == height) && |
| 324 | ((modes[i]->ModeInfo.Type == VIDBUF8) || |
| 325 | (modes[i]->ModeInfo.Type == VIDBUF16) || |
| 326 | (modes[i]->ModeInfo.Type == VIDBUF32))) { |
| 327 | mode_found = 1; |
| 328 | break; |
| 329 | } |
| 330 | } |
| 331 | if (mode_found == 0) { |
| 332 | SDL_SetError("No matching video mode found"); |
| 333 | return NULL; |
| 334 | } |
| 335 | |
| 336 | /* Shutdown previous videomode (if any) */ |
| 337 | if (VGLCurMode != NULL) |
| 338 | VGLEnd(); |
| 339 | |
| 340 | /* Try to set the requested linear video mode */ |
| 341 | if (VGLInit(modes[i]->ModeId) != 0) { |
| 342 | SDL_SetError("Unable to switch to requested mode"); |
| 343 | return NULL; |
| 344 | } |
| 345 | |
| 346 | VGLCurMode = SDL_realloc(VGLCurMode, sizeof(VGLMode)); |
| 347 | VGLCurMode->ModeInfo = *VGLDisplay; |
| 348 | VGLCurMode->Depth = modes[i]->Depth; |
| 349 | VGLCurMode->ModeId = modes[i]->ModeId; |
| 350 | VGLCurMode->Rmask = modes[i]->Rmask; |
| 351 | VGLCurMode->Gmask = modes[i]->Gmask; |
| 352 | VGLCurMode->Bmask = modes[i]->Bmask; |
| 353 | |
| 354 | /* Workaround a bug in libvgl */ |
| 355 | if (VGLCurMode->ModeInfo.PixelBytes == 0) |
| 356 | (VGLCurMode->ModeInfo.PixelBytes = 1); |
| 357 | |
| 358 | current->w = VGLCurMode->ModeInfo.Xsize; |
| 359 | current->h = VGLCurMode->ModeInfo.Ysize; |
| 360 | current->pixels = VGLCurMode->ModeInfo.Bitmap; |
| 361 | current->pitch = VGLCurMode->ModeInfo.Xsize * |
| 362 | VGLCurMode->ModeInfo.PixelBytes; |
| 363 | current->flags = (SDL_FULLSCREEN | SDL_HWSURFACE); |
| 364 | |
| 365 | /* Check if we are in a pseudo-color mode */ |
| 366 | if (VGLCurMode->ModeInfo.Type == VIDBUF8) |
| 367 | current->flags |= SDL_HWPALETTE; |
| 368 | |
| 369 | /* Check if we can do doublebuffering */ |
| 370 | if (flags & SDL_DOUBLEBUF) { |
| 371 | if (VGLCurMode->ModeInfo.Xsize * 2 <= |
| 372 | VGLCurMode->ModeInfo.VYsize) { |
| 373 | current->flags |= SDL_DOUBLEBUF; |
| 374 | flip_page = 0; |
| 375 | flip_address[0] = (byte *)current->pixels; |
| 376 | flip_address[1] = (byte *)current->pixels + |
| 377 | current->h * current->pitch; |
| 378 | VGL_FlipHWSurface(this, current); |
| 379 | } |
| 380 | } |
| 381 | |
| 382 | if (! SDL_ReallocFormat(current, modes[i]->Depth, VGLCurMode->Rmask, |
| 383 | VGLCurMode->Gmask, VGLCurMode->Bmask, 0)) { |
| 384 | return NULL; |
| 385 | } |
| 386 | |
| 387 | /* Update hardware acceleration info */ |
| 388 | VGL_UpdateVideoInfo(this); |
| 389 | |
| 390 | /* Set the blit function */ |
| 391 | this->UpdateRects = VGL_DirectUpdate; |
| 392 | |
| 393 | /* We're done */ |
| 394 | return current; |
| 395 | } |
| 396 | |
| 397 | /* We don't actually allow hardware surfaces other than the main one */ |
| 398 | static int VGL_AllocHWSurface(_THIS, SDL_Surface *surface) |
| 399 | { |
| 400 | return -1; |
| 401 | } |
| 402 | static void VGL_FreeHWSurface(_THIS, SDL_Surface *surface) |
| 403 | { |
| 404 | return; |
| 405 | } |
| 406 | |
| 407 | /* We need to wait for vertical retrace on page flipped displays */ |
| 408 | static int VGL_LockHWSurface(_THIS, SDL_Surface *surface) |
| 409 | { |
| 410 | if (surface == SDL_VideoSurface) { |
| 411 | SDL_mutexP(hw_lock); |
| 412 | } |
| 413 | return 0; |
| 414 | } |
| 415 | static void VGL_UnlockHWSurface(_THIS, SDL_Surface *surface) |
| 416 | { |
| 417 | if (surface == SDL_VideoSurface) { |
| 418 | SDL_mutexV(hw_lock); |
| 419 | } |
| 420 | } |
| 421 | |
| 422 | static int VGL_FlipHWSurface(_THIS, SDL_Surface *surface) |
| 423 | { |
| 424 | // VGLWaitRetrace(); |
| 425 | if (VGLPanScreen(VGLDisplay, 0, flip_page * surface->h) < 0) { |
| 426 | SDL_SetError("VGLPanSreen() failed"); |
| 427 | return -1; |
| 428 | } |
| 429 | |
| 430 | flip_page = !flip_page; |
| 431 | surface->pixels = flip_address[flip_page]; |
| 432 | |
| 433 | return 0; |
| 434 | } |
| 435 | |
| 436 | static void VGL_DirectUpdate(_THIS, int numrects, SDL_Rect *rects) |
| 437 | { |
| 438 | return; |
| 439 | } |
| 440 | |
| 441 | static void VGL_BankedUpdate(_THIS, int numrects, SDL_Rect *rects) |
| 442 | { |
| 443 | return; |
| 444 | } |
| 445 | |
| 446 | int VGL_SetColors(_THIS, int firstcolor, int ncolors, SDL_Color *colors) |
| 447 | { |
| 448 | int i; |
| 449 | |
| 450 | for(i = 0; i < ncolors; i++) { |
| 451 | VGLSetPaletteIndex(firstcolor + i, |
| 452 | colors[i].r>>2, |
| 453 | colors[i].g>>2, |
| 454 | colors[i].b>>2); |
| 455 | } |
| 456 | return 1; |
| 457 | } |
| 458 | |
| 459 | /* Note: If we are terminated, this could be called in the middle of |
| 460 | another SDL video routine -- notably UpdateRects. |
| 461 | */ |
| 462 | void VGL_VideoQuit(_THIS) |
| 463 | { |
| 464 | int i, j; |
| 465 | |
| 466 | /* Return the keyboard to the normal state */ |
| 467 | VGLKeyboardEnd(); |
| 468 | |
| 469 | /* Reset the console video mode if we actually initialised one */ |
| 470 | if (VGLCurMode != NULL) { |
| 471 | VGLEnd(); |
| 472 | SDL_free(VGLCurMode); |
| 473 | VGLCurMode = NULL; |
| 474 | } |
| 475 | |
| 476 | /* Clear the lock mutex */ |
| 477 | if (hw_lock != NULL) { |
| 478 | SDL_DestroyMutex(hw_lock); |
| 479 | hw_lock = NULL; |
| 480 | } |
| 481 | |
| 482 | /* Free video mode lists */ |
| 483 | for (i = 0; i < NUM_MODELISTS; i++) { |
| 484 | if (SDL_modelist[i] != NULL) { |
| 485 | for (j = 0; SDL_modelist[i][j] != NULL; ++j) { |
| 486 | SDL_free(SDL_modelist[i][j]); |
| 487 | } |
| 488 | SDL_free(SDL_modelist[i]); |
| 489 | SDL_modelist[i] = NULL; |
| 490 | } |
| 491 | } |
| 492 | |
| 493 | if ( this->screen && (this->screen->flags & SDL_HWSURFACE) ) { |
| 494 | /* Direct screen access, not a memory buffer */ |
| 495 | this->screen->pixels = NULL; |
| 496 | } |
| 497 | } |
| 498 | |
| 499 | #define VGL_RED_INDEX 0 |
| 500 | #define VGL_GREEN_INDEX 1 |
| 501 | #define VGL_BLUE_INDEX 2 |
| 502 | |
| 503 | static VGLMode ** |
| 504 | VGLListModes(int depth, int mem_model) |
| 505 | { |
| 506 | static VGLMode **modes = NULL; |
| 507 | |
| 508 | VGLBitmap *vminfop; |
| 509 | VGLMode **modesp, *modescp; |
| 510 | video_info_t minfo; |
| 511 | int adptype, i, modenum; |
| 512 | |
| 513 | if (modes == NULL) { |
| 514 | modes = SDL_malloc(sizeof(VGLMode *) * M_VESA_MODE_MAX); |
| 515 | bzero(modes, sizeof(VGLMode *) * M_VESA_MODE_MAX); |
| 516 | } |
| 517 | modesp = modes; |
| 518 | |
| 519 | for (modenum = 0; modenum < M_VESA_MODE_MAX; modenum++) { |
| 520 | minfo.vi_mode = modenum; |
| 521 | if (ioctl(0, CONS_MODEINFO, &minfo) || ioctl(0, CONS_CURRENT, &adptype)) |
| 522 | continue; |
| 523 | if (minfo.vi_mode != modenum) |
| 524 | continue; |
| 525 | if ((minfo.vi_flags & V_INFO_GRAPHICS) == 0) |
| 526 | continue; |
| 527 | if ((mem_model != -1) && ((minfo.vi_mem_model & mem_model) == 0)) |
| 528 | continue; |
| 529 | if ((depth > 1) && (minfo.vi_depth != depth)) |
| 530 | continue; |
| 531 | |
| 532 | /* reallocf can fail */ |
| 533 | if ((*modesp = reallocf(*modesp, sizeof(VGLMode))) == NULL) |
| 534 | return NULL; |
| 535 | modescp = *modesp; |
| 536 | |
| 537 | vminfop = &(modescp->ModeInfo); |
| 538 | bzero(vminfop, sizeof(VGLBitmap)); |
| 539 | |
| 540 | vminfop->Type = NOBUF; |
| 541 | |
| 542 | vminfop->PixelBytes = 1; /* Good default value */ |
| 543 | switch (minfo.vi_mem_model) { |
| 544 | case V_INFO_MM_PLANAR: |
| 545 | /* we can handle EGA/VGA planar modes only */ |
| 546 | if (!(minfo.vi_depth != 4 || minfo.vi_planes != 4 |
| 547 | || (adptype != KD_EGA && adptype != KD_VGA))) |
| 548 | vminfop->Type = VIDBUF4; |
| 549 | break; |
| 550 | case V_INFO_MM_PACKED: |
| 551 | /* we can do only 256 color packed modes */ |
| 552 | if (minfo.vi_depth == 8) |
| 553 | vminfop->Type = VIDBUF8; |
| 554 | break; |
| 555 | case V_INFO_MM_VGAX: |
| 556 | vminfop->Type = VIDBUF8X; |
| 557 | break; |
| 558 | #if defined(__FREEBSD__) && (defined(__DragonFly__) || __FreeBSD_version >= 500000) |
| 559 | case V_INFO_MM_DIRECT: |
| 560 | vminfop->PixelBytes = minfo.vi_pixel_size; |
| 561 | switch (vminfop->PixelBytes) { |
| 562 | case 2: |
| 563 | vminfop->Type = VIDBUF16; |
| 564 | break; |
| 565 | #if notyet |
| 566 | case 3: |
| 567 | vminfop->Type = VIDBUF24; |
| 568 | break; |
| 569 | #endif |
| 570 | case 4: |
| 571 | vminfop->Type = VIDBUF32; |
| 572 | break; |
| 573 | default: |
| 574 | break; |
| 575 | } |
| 576 | #endif |
| 577 | default: |
| 578 | break; |
| 579 | } |
| 580 | if (vminfop->Type == NOBUF) |
| 581 | continue; |
| 582 | |
| 583 | switch (vminfop->Type) { |
| 584 | case VIDBUF16: |
| 585 | case VIDBUF32: |
| 586 | modescp->Rmask = ((1 << minfo.vi_pixel_fsizes[VGL_RED_INDEX]) - 1) << |
| 587 | minfo.vi_pixel_fields[VGL_RED_INDEX]; |
| 588 | modescp->Gmask = ((1 << minfo.vi_pixel_fsizes[VGL_GREEN_INDEX]) - 1) << |
| 589 | minfo.vi_pixel_fields[VGL_GREEN_INDEX]; |
| 590 | modescp->Bmask = ((1 << minfo.vi_pixel_fsizes[VGL_BLUE_INDEX]) - 1) << |
| 591 | minfo.vi_pixel_fields[VGL_BLUE_INDEX]; |
| 592 | break; |
| 593 | |
| 594 | default: |
| 595 | break; |
| 596 | } |
| 597 | |
| 598 | vminfop->Xsize = minfo.vi_width; |
| 599 | vminfop->Ysize = minfo.vi_height; |
| 600 | modescp->Depth = minfo.vi_depth; |
| 601 | |
| 602 | /* XXX */ |
| 603 | if (minfo.vi_mode >= M_VESA_BASE) |
| 604 | modescp->ModeId = _IO('V', minfo.vi_mode - M_VESA_BASE); |
| 605 | else |
| 606 | modescp->ModeId = _IO('S', minfo.vi_mode); |
| 607 | |
| 608 | /* Sort list */ |
| 609 | for (i = 0; modes + i < modesp ; i++) { |
| 610 | if (modes[i]->ModeInfo.Xsize * modes[i]->ModeInfo.Ysize > |
| 611 | vminfop->Xsize * modes[i]->ModeInfo.Ysize) |
| 612 | continue; |
| 613 | if ((modes[i]->ModeInfo.Xsize * modes[i]->ModeInfo.Ysize == |
| 614 | vminfop->Xsize * vminfop->Ysize) && |
| 615 | (modes[i]->Depth >= modescp->Depth)) |
| 616 | continue; |
| 617 | *modesp = modes[i]; |
| 618 | modes[i] = modescp; |
| 619 | modescp = *modesp; |
| 620 | vminfop = &(modescp->ModeInfo); |
| 621 | } |
| 622 | |
| 623 | modesp++; |
| 624 | } |
| 625 | |
| 626 | if (*modesp != NULL) { |
| 627 | SDL_free(*modesp); |
| 628 | *modesp = NULL; |
| 629 | } |
| 630 | |
| 631 | return modes; |
| 632 | } |
| 633 | |
| 634 | static void |
| 635 | VGLWaitRetrace(void) |
| 636 | { |
| 637 | while (!(inb(0x3DA) & 8)); |
| 638 | while (inb(0x3DA) & 8); |
| 639 | } |
| 640 | |