Mercurial > sdl-ios-xcode
annotate src/video/dga/SDL_dgavideo.c @ 821:30168104389f
Date: Sat, 14 Feb 2004 14:52:40 +0200
From: "Mike Gorchak"
Subject: Batch of the QNX6 fixes for the SDL
1. Updated readme.QNX
2. Fixed crashes during intensive window updating under fast machines (got over 200 rectangles for update).
3. Fixed double-buffered fullscreen modes, now it works as needed.
4. Fixed Photon detection algorithm.
5. Fixed HWSURFACE update function.
6. Added SDL_PHOTON_FULLSCREEN_REFRESH environment variable support for control refresh rates under Photon.
7. Added 640x400 fullscreen mode emulation via 640x480 (if videodriver not supports original 640x400 mode of course) shifted by 40 vertical pixels from begin, to center it. It's needed for some old DOS games which ran in doubled 320x200 mode.
8. Added available video ram amount support.
8. Added hardware surface allocation/deallocation support if current videomode and videodriver supports it.
9. Added hardware filling support.
10. Added hardware blits support (simple and colorkeyed).
And I've added to testvidinfo test color-keyed blits benchmark (maybe need to add alpha blits benchmark too ?). Currently Photon not supporting any alpha hardware blittings (all drivers lack of alpha blitting code support, only software alpha blitting exist in photon, which is hundreds times slowest than the SDL's one). So I've not added the alpha support. I suppose new QNX 6.3 will have the hardware alpha support, so when it will be done, I'll add alpha support.
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Sat, 14 Feb 2004 20:22:21 +0000 |
| parents | b8d311d90021 |
| children | f72cc0c7305f |
| 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 /* DGA 2.0 based SDL video driver implementation. | |
| 29 */ | |
| 30 | |
| 31 #include <stdlib.h> | |
| 32 #include <string.h> | |
| 33 #include <X11/Xlib.h> | |
|
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34 #include <XFree86/extensions/xf86dga.h> |
| 0 | 35 |
| 36 #ifdef HAVE_ALLOCA_H | |
| 37 #include <alloca.h> | |
| 38 #endif | |
| 39 | |
| 40 #include "SDL.h" | |
| 41 #include "SDL_error.h" | |
| 42 #include "SDL_video.h" | |
| 43 #include "SDL_mouse.h" | |
| 44 #include "SDL_sysvideo.h" | |
| 45 #include "SDL_pixels_c.h" | |
| 46 #include "SDL_events_c.h" | |
| 47 #include "SDL_dgavideo.h" | |
| 48 #include "SDL_dgamouse_c.h" | |
| 49 #include "SDL_dgaevents_c.h" | |
| 50 | |
| 51 /* Initialization/Query functions */ | |
| 52 static int DGA_VideoInit(_THIS, SDL_PixelFormat *vformat); | |
| 53 static SDL_Rect **DGA_ListModes(_THIS, SDL_PixelFormat *format, Uint32 flags); | |
| 54 static SDL_Surface *DGA_SetVideoMode(_THIS, SDL_Surface *current, int width, int height, int bpp, Uint32 flags); | |
| 55 static int DGA_SetColors(_THIS, int firstcolor, int ncolors, | |
| 56 SDL_Color *colors); | |
| 57 static int DGA_SetGammaRamp(_THIS, Uint16 *ramp); | |
| 58 static void DGA_VideoQuit(_THIS); | |
| 59 | |
| 60 /* Hardware surface functions */ | |
|
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61 static int DGA_InitHWSurfaces(_THIS, SDL_Surface *screen, Uint8 *base, int size); |
| 0 | 62 static void DGA_FreeHWSurfaces(_THIS); |
| 63 static int DGA_AllocHWSurface(_THIS, SDL_Surface *surface); | |
| 64 static int DGA_FillHWRect(_THIS, SDL_Surface *dst, SDL_Rect *rect, Uint32 color); | |
| 65 static int DGA_CheckHWBlit(_THIS, SDL_Surface *src, SDL_Surface *dst); | |
| 66 static int DGA_LockHWSurface(_THIS, SDL_Surface *surface); | |
| 67 static void DGA_UnlockHWSurface(_THIS, SDL_Surface *surface); | |
| 68 static void DGA_FreeHWSurface(_THIS, SDL_Surface *surface); | |
| 69 static int DGA_FlipHWSurface(_THIS, SDL_Surface *surface); | |
| 70 | |
| 71 /* DGA driver bootstrap functions */ | |
| 72 | |
| 73 static int DGA_Available(void) | |
| 74 { | |
| 75 const char *display; | |
| 76 Display *dpy; | |
| 77 int available; | |
| 78 | |
| 79 /* The driver is available is available if the display is local | |
| 80 and the DGA 2.0+ extension is available, and we can map mem. | |
| 81 */ | |
| 82 available = 0; | |
| 83 display = NULL; | |
| 84 if ( (strncmp(XDisplayName(display), ":", 1) == 0) || | |
| 85 (strncmp(XDisplayName(display), "unix:", 5) == 0) ) { | |
| 86 dpy = XOpenDisplay(display); | |
| 87 if ( dpy ) { | |
| 88 int events, errors, major, minor; | |
| 89 | |
|
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90 if ( SDL_NAME(XDGAQueryExtension)(dpy, &events, &errors) && |
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91 SDL_NAME(XDGAQueryVersion)(dpy, &major, &minor) ) { |
| 0 | 92 int screen; |
| 93 | |
| 94 screen = DefaultScreen(dpy); | |
| 95 if ( (major >= 2) && | |
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96 SDL_NAME(XDGAOpenFramebuffer)(dpy, screen) ) { |
| 0 | 97 available = 1; |
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98 SDL_NAME(XDGACloseFramebuffer)(dpy, screen); |
| 0 | 99 } |
| 100 } | |
| 101 XCloseDisplay(dpy); | |
| 102 } | |
| 103 } | |
| 104 return(available); | |
| 105 } | |
| 106 | |
| 107 static void DGA_DeleteDevice(SDL_VideoDevice *device) | |
| 108 { | |
| 109 free(device->hidden); | |
| 110 free(device); | |
| 111 } | |
| 112 | |
| 113 static SDL_VideoDevice *DGA_CreateDevice(int devindex) | |
| 114 { | |
| 115 SDL_VideoDevice *device; | |
| 116 | |
| 117 /* Initialize all variables that we clean on shutdown */ | |
| 118 device = (SDL_VideoDevice *)malloc(sizeof(SDL_VideoDevice)); | |
| 119 if ( device ) { | |
| 120 memset(device, 0, (sizeof *device)); | |
| 121 device->hidden = (struct SDL_PrivateVideoData *) | |
| 122 malloc((sizeof *device->hidden)); | |
| 123 } | |
| 124 if ( (device == NULL) || (device->hidden == NULL) ) { | |
| 125 SDL_OutOfMemory(); | |
| 126 if ( device ) { | |
| 127 free(device); | |
| 128 } | |
| 129 return(0); | |
| 130 } | |
| 131 memset(device->hidden, 0, (sizeof *device->hidden)); | |
| 132 | |
| 133 /* Set the function pointers */ | |
| 134 device->VideoInit = DGA_VideoInit; | |
| 135 device->ListModes = DGA_ListModes; | |
| 136 device->SetVideoMode = DGA_SetVideoMode; | |
| 137 device->SetColors = DGA_SetColors; | |
| 138 device->UpdateRects = NULL; | |
| 139 device->VideoQuit = DGA_VideoQuit; | |
| 140 device->AllocHWSurface = DGA_AllocHWSurface; | |
| 141 device->CheckHWBlit = DGA_CheckHWBlit; | |
| 142 device->FillHWRect = DGA_FillHWRect; | |
| 143 device->SetHWColorKey = NULL; | |
| 144 device->SetHWAlpha = NULL; | |
| 145 device->LockHWSurface = DGA_LockHWSurface; | |
| 146 device->UnlockHWSurface = DGA_UnlockHWSurface; | |
| 147 device->FlipHWSurface = DGA_FlipHWSurface; | |
| 148 device->FreeHWSurface = DGA_FreeHWSurface; | |
| 149 device->SetGammaRamp = DGA_SetGammaRamp; | |
| 150 device->GetGammaRamp = NULL; | |
| 151 device->SetCaption = NULL; | |
| 152 device->SetIcon = NULL; | |
| 153 device->IconifyWindow = NULL; | |
| 154 device->GrabInput = NULL; | |
| 155 device->GetWMInfo = NULL; | |
| 156 device->InitOSKeymap = DGA_InitOSKeymap; | |
| 157 device->PumpEvents = DGA_PumpEvents; | |
| 158 | |
| 159 device->free = DGA_DeleteDevice; | |
| 160 | |
| 161 return device; | |
| 162 } | |
| 163 | |
| 164 VideoBootStrap DGA_bootstrap = { | |
| 165 "dga", "XFree86 DGA 2.0", | |
| 166 DGA_Available, DGA_CreateDevice | |
| 167 }; | |
| 168 | |
| 169 static int DGA_AddMode(_THIS, int bpp, int w, int h) | |
| 170 { | |
| 171 SDL_Rect *mode; | |
| 172 int i, index; | |
| 173 int next_mode; | |
| 174 | |
| 175 /* Check to see if we already have this mode */ | |
| 176 if ( bpp < 8 ) { /* Not supported */ | |
| 177 return(0); | |
| 178 } | |
| 179 index = ((bpp+7)/8)-1; | |
| 180 for ( i=0; i<SDL_nummodes[index]; ++i ) { | |
| 181 mode = SDL_modelist[index][i]; | |
| 182 if ( (mode->w == w) && (mode->h == h) ) { | |
| 183 return(0); | |
| 184 } | |
| 185 } | |
| 186 | |
| 187 /* Set up the new video mode rectangle */ | |
| 188 mode = (SDL_Rect *)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 = w; | |
| 196 mode->h = h; | |
| 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 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 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 /* This whole function is a hack. :) */ | |
| 216 static Uint32 get_video_size(_THIS) | |
| 217 { | |
| 218 /* This is a non-exported function from libXxf86dga.a */ | |
|
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219 extern unsigned char *SDL_NAME(XDGAGetMappedMemory)(int screen); |
| 0 | 220 FILE *proc; |
| 221 unsigned long mem; | |
| 222 unsigned start, stop; | |
| 223 char line[BUFSIZ]; | |
| 224 Uint32 size; | |
| 225 | |
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226 mem = (unsigned long)SDL_NAME(XDGAGetMappedMemory)(DGA_Screen); |
| 0 | 227 size = 0; |
| 228 proc = fopen("/proc/self/maps", "r"); | |
| 229 if ( proc ) { | |
| 230 while ( fgets(line, sizeof(line)-1, proc) ) { | |
| 231 sscanf(line, "%x-%x", &start, &stop); | |
| 232 if ( start == mem ) { | |
| 233 size = (Uint32)((stop-start)/1024); | |
| 234 break; | |
| 235 } | |
| 236 } | |
| 237 fclose(proc); | |
| 238 } | |
| 239 return(size); | |
| 240 } | |
| 241 | |
| 242 #ifdef DGA_DEBUG | |
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243 static void PrintMode(SDL_NAME(XDGAMode) *mode) |
| 0 | 244 { |
| 245 printf("Mode: %s (%dx%d) at %d bpp (%f refresh, %d pitch) num: %d\n", | |
| 246 mode->name, | |
| 247 mode->viewportWidth, mode->viewportHeight, | |
| 248 mode->depth == 24 ? mode->bitsPerPixel : mode->depth, | |
| 249 mode->verticalRefresh, mode->bytesPerScanline, mode->num); | |
| 250 printf("\tRGB: 0x%8.8x 0x%8.8x 0x%8.8x (%d - %s)\n", | |
| 251 mode->redMask, mode->greenMask, mode->blueMask, | |
| 252 mode->visualClass, | |
| 253 mode->visualClass == TrueColor ? "truecolor" : | |
| 254 mode->visualClass == DirectColor ? "directcolor" : | |
| 255 mode->visualClass == PseudoColor ? "pseudocolor" : "unknown"); | |
| 256 printf("\tFlags: "); | |
| 257 if ( mode->flags & XDGAConcurrentAccess ) | |
| 258 printf(" XDGAConcurrentAccess"); | |
| 259 if ( mode->flags & XDGASolidFillRect ) | |
| 260 printf(" XDGASolidFillRect"); | |
| 261 if ( mode->flags & XDGABlitRect ) | |
| 262 printf(" XDGABlitRect"); | |
| 263 if ( mode->flags & XDGABlitTransRect ) | |
| 264 printf(" XDGABlitTransRect"); | |
| 265 if ( mode->flags & XDGAPixmap ) | |
| 266 printf(" XDGAPixmap"); | |
| 267 if ( mode->flags & XDGAInterlaced ) | |
| 268 printf(" XDGAInterlaced"); | |
| 269 if ( mode->flags & XDGADoublescan ) | |
| 270 printf(" XDGADoublescan"); | |
| 271 if ( mode->viewportFlags & XDGAFlipRetrace ) | |
| 272 printf(" XDGAFlipRetrace"); | |
| 273 if ( mode->viewportFlags & XDGAFlipImmediate ) | |
| 274 printf(" XDGAFlipImmediate"); | |
| 275 printf("\n"); | |
| 276 } | |
| 277 #endif /* DGA_DEBUG */ | |
| 278 | |
| 279 static int cmpmodes(const void *va, const void *vb) | |
| 280 { | |
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281 const SDL_NAME(XDGAMode) *a = (const SDL_NAME(XDGAMode) *)va; |
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282 const SDL_NAME(XDGAMode) *b = (const SDL_NAME(XDGAMode) *)vb; |
| 0 | 283 |
| 284 /* Prefer DirectColor visuals for otherwise equal modes */ | |
| 285 if ( (a->viewportWidth == b->viewportWidth) && | |
| 286 (b->viewportHeight == a->viewportHeight) ) { | |
| 287 if ( a->visualClass == DirectColor ) | |
| 288 return -1; | |
| 289 if ( b->visualClass == DirectColor ) | |
| 290 return 1; | |
| 291 return 0; | |
| 292 } else { | |
| 293 if(a->viewportWidth > b->viewportWidth) | |
| 294 return -1; | |
| 295 return b->viewportHeight - a->viewportHeight; | |
| 296 } | |
| 297 } | |
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298 static void UpdateHWInfo(_THIS, SDL_NAME(XDGAMode) *mode) |
| 0 | 299 { |
| 300 this->info.wm_available = 0; | |
| 301 this->info.hw_available = 1; | |
| 302 if ( mode->flags & XDGABlitRect ) { | |
| 303 this->info.blit_hw = 1; | |
| 304 } else { | |
| 305 this->info.blit_hw = 0; | |
| 306 } | |
| 307 if ( mode->flags & XDGABlitTransRect ) { | |
| 308 this->info.blit_hw_CC = 1; | |
| 309 } else { | |
| 310 this->info.blit_hw_CC = 0; | |
| 311 } | |
| 312 if ( mode->flags & XDGASolidFillRect ) { | |
| 313 this->info.blit_fill = 1; | |
| 314 } else { | |
| 315 this->info.blit_fill = 0; | |
| 316 } | |
| 317 this->info.video_mem = get_video_size(this); | |
| 318 } | |
| 319 | |
| 320 static int DGA_VideoInit(_THIS, SDL_PixelFormat *vformat) | |
| 321 { | |
| 322 const char *display; | |
| 323 int event_base, error_base; | |
| 324 int major_version, minor_version; | |
| 325 Visual *visual; | |
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326 SDL_NAME(XDGAMode) *modes; |
| 0 | 327 int i, num_modes; |
| 328 | |
| 329 /* Open the X11 display */ | |
| 330 display = NULL; /* Get it from DISPLAY environment variable */ | |
| 331 | |
| 332 DGA_Display = XOpenDisplay(display); | |
| 333 if ( DGA_Display == NULL ) { | |
| 334 SDL_SetError("Couldn't open X11 display"); | |
| 335 return(-1); | |
| 336 } | |
| 337 | |
| 338 /* Check for the DGA extension */ | |
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339 if ( ! SDL_NAME(XDGAQueryExtension)(DGA_Display, &event_base, &error_base) || |
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340 ! SDL_NAME(XDGAQueryVersion)(DGA_Display, &major_version, &minor_version) ) { |
| 0 | 341 SDL_SetError("DGA extension not available"); |
| 342 XCloseDisplay(DGA_Display); | |
| 343 return(-1); | |
| 344 } | |
| 345 if ( major_version < 2 ) { | |
| 346 SDL_SetError("DGA driver requires DGA 2.0 or newer"); | |
| 347 XCloseDisplay(DGA_Display); | |
| 348 return(-1); | |
| 349 } | |
| 350 DGA_event_base = event_base; | |
| 351 | |
| 352 /* Determine the current screen depth */ | |
| 353 visual = DefaultVisual(DGA_Display, DGA_Screen); | |
| 354 { | |
| 355 XPixmapFormatValues *pix_format; | |
| 356 int i, num_formats; | |
| 357 | |
| 358 vformat->BitsPerPixel = DefaultDepth(DGA_Display, DGA_Screen); | |
| 359 pix_format = XListPixmapFormats(DGA_Display, &num_formats); | |
| 360 if ( pix_format == NULL ) { | |
| 361 SDL_SetError("Couldn't determine screen formats"); | |
| 362 XCloseDisplay(DGA_Display); | |
| 363 return(-1); | |
| 364 } | |
| 365 for ( i=0; i<num_formats; ++i ) { | |
| 366 if ( vformat->BitsPerPixel == pix_format[i].depth ) | |
| 367 break; | |
| 368 } | |
| 369 if ( i != num_formats ) | |
| 370 vformat->BitsPerPixel = pix_format[i].bits_per_pixel; | |
| 371 XFree((char *)pix_format); | |
| 372 } | |
| 373 if ( vformat->BitsPerPixel > 8 ) { | |
| 374 vformat->Rmask = visual->red_mask; | |
| 375 vformat->Gmask = visual->green_mask; | |
| 376 vformat->Bmask = visual->blue_mask; | |
| 377 } | |
| 378 | |
| 379 /* Open access to the framebuffer */ | |
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380 if ( ! SDL_NAME(XDGAOpenFramebuffer)(DGA_Display, DGA_Screen) ) { |
| 0 | 381 SDL_SetError("Unable to map the video memory"); |
| 382 XCloseDisplay(DGA_Display); | |
| 383 return(-1); | |
| 384 } | |
| 385 | |
| 386 /* Query for the list of available video modes */ | |
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387 modes = SDL_NAME(XDGAQueryModes)(DGA_Display, DGA_Screen, &num_modes); |
| 0 | 388 qsort(modes, num_modes, sizeof *modes, cmpmodes); |
| 389 for ( i=0; i<num_modes; ++i ) { | |
| 390 #ifdef DGA_DEBUG | |
| 391 PrintMode(&modes[i]); | |
| 392 #endif | |
| 393 if ( (modes[i].visualClass == PseudoColor) || | |
| 394 (modes[i].visualClass == DirectColor) || | |
| 395 (modes[i].visualClass == TrueColor) ) { | |
| 396 DGA_AddMode(this, modes[i].bitsPerPixel, | |
| 397 modes[i].viewportWidth, | |
| 398 modes[i].viewportHeight); | |
| 399 } | |
| 400 } | |
| 401 UpdateHWInfo(this, modes); | |
| 402 XFree(modes); | |
| 403 | |
| 404 /* Create the hardware surface lock mutex */ | |
| 405 hw_lock = SDL_CreateMutex(); | |
| 406 if ( hw_lock == NULL ) { | |
| 407 SDL_SetError("Unable to create lock mutex"); | |
| 408 DGA_VideoQuit(this); | |
| 409 return(-1); | |
| 410 } | |
| 411 | |
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412 #ifdef LOCK_DGA_DISPLAY |
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413 /* Create the event lock so we're thread-safe.. :-/ */ |
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414 event_lock = SDL_CreateMutex(); |
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415 #endif /* LOCK_DGA_DISPLAY */ |
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416 |
| 0 | 417 /* We're done! */ |
| 418 return(0); | |
| 419 } | |
| 420 | |
| 421 SDL_Rect **DGA_ListModes(_THIS, SDL_PixelFormat *format, Uint32 flags) | |
| 422 { | |
| 423 return(SDL_modelist[((format->BitsPerPixel+7)/8)-1]); | |
| 424 } | |
| 425 | |
| 426 /* Various screen update functions available */ | |
| 427 static void DGA_DirectUpdate(_THIS, int numrects, SDL_Rect *rects); | |
| 428 | |
| 429 SDL_Surface *DGA_SetVideoMode(_THIS, SDL_Surface *current, | |
| 430 int width, int height, int bpp, Uint32 flags) | |
| 431 { | |
|
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432 SDL_NAME(XDGAMode) *modes; |
| 0 | 433 int i, num_modes; |
|
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434 SDL_NAME(XDGADevice) *mode; |
| 0 | 435 int screen_len; |
| 436 Uint8 *surfaces_mem; | |
| 437 int surfaces_len; | |
| 438 | |
| 439 /* Free any previous colormap */ | |
| 440 if ( DGA_colormap ) { | |
| 441 XFreeColormap(DGA_Display, DGA_colormap); | |
| 442 DGA_colormap = 0; | |
| 443 } | |
| 444 | |
| 445 /* Search for a matching video mode */ | |
|
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446 modes = SDL_NAME(XDGAQueryModes)(DGA_Display, DGA_Screen, &num_modes); |
| 0 | 447 qsort(modes, num_modes, sizeof *modes, cmpmodes); |
| 448 for ( i=0; i<num_modes; ++i ) { | |
| 449 int depth; | |
| 450 | |
| 451 | |
| 452 depth = modes[i].depth; | |
| 453 if ( depth == 24 ) { /* Distinguish between 24 and 32 bpp */ | |
| 454 depth = modes[i].bitsPerPixel; | |
| 455 } | |
| 456 if ( (depth == bpp) && | |
| 457 (modes[i].viewportWidth == width) && | |
| 458 (modes[i].viewportHeight == height) && | |
| 459 ((modes[i].visualClass == PseudoColor) || | |
| 460 (modes[i].visualClass == DirectColor) || | |
| 461 (modes[i].visualClass == TrueColor)) ) { | |
| 462 break; | |
| 463 } | |
| 464 } | |
| 465 if ( i == num_modes ) { | |
| 466 SDL_SetError("No matching video mode found"); | |
| 467 return(NULL); | |
| 468 } | |
| 469 | |
| 470 /* Set the video mode */ | |
|
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471 mode = SDL_NAME(XDGASetMode)(DGA_Display, DGA_Screen, modes[i].num); |
| 0 | 472 XFree(modes); |
| 473 if ( mode == NULL ) { | |
| 474 SDL_SetError("Unable to switch to requested mode"); | |
| 475 return(NULL); | |
| 476 } | |
|
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477 DGA_visualClass = mode->mode.visualClass; |
| 0 | 478 memory_base = (Uint8 *)mode->data; |
| 479 memory_pitch = mode->mode.bytesPerScanline; | |
| 480 | |
| 481 /* Set up the new mode framebuffer */ | |
| 482 current->flags = (SDL_FULLSCREEN|SDL_HWSURFACE); | |
| 483 current->w = mode->mode.viewportWidth; | |
| 484 current->h = mode->mode.viewportHeight; | |
| 485 current->pitch = memory_pitch; | |
| 486 current->pixels = memory_base; | |
| 487 if ( ! SDL_ReallocFormat(current, mode->mode.bitsPerPixel, | |
| 488 mode->mode.redMask, | |
| 489 mode->mode.greenMask, | |
| 490 mode->mode.blueMask, 0) ) { | |
| 491 return(NULL); | |
| 492 } | |
| 493 screen_len = current->h*current->pitch; | |
| 494 | |
| 495 /* Create a colormap if necessary */ | |
| 496 if ( (DGA_visualClass == PseudoColor) || | |
| 497 (DGA_visualClass == DirectColor) ) { | |
|
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498 DGA_colormap = SDL_NAME(XDGACreateColormap)(DGA_Display, DGA_Screen, |
| 0 | 499 mode, AllocAll); |
| 500 if ( DGA_visualClass == PseudoColor ) { | |
| 501 current->flags |= SDL_HWPALETTE; | |
| 502 } else { | |
| 503 /* Initialize the colormap to the identity mapping */ | |
| 504 SDL_GetGammaRamp(0, 0, 0); | |
| 505 this->screen = current; | |
| 506 DGA_SetGammaRamp(this, this->gamma); | |
| 507 this->screen = NULL; | |
| 508 } | |
| 509 } else { | |
|
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510 DGA_colormap = SDL_NAME(XDGACreateColormap)(DGA_Display, DGA_Screen, |
| 0 | 511 mode, AllocNone); |
| 512 } | |
|
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513 SDL_NAME(XDGAInstallColormap)(DGA_Display, DGA_Screen, DGA_colormap); |
| 0 | 514 |
| 515 /* Update the hardware capabilities */ | |
| 516 UpdateHWInfo(this, &mode->mode); | |
| 517 | |
| 518 /* Set up the information for hardware surfaces */ | |
| 519 surfaces_mem = (Uint8 *)current->pixels + screen_len; | |
| 520 surfaces_len = (mode->mode.imageHeight*current->pitch - screen_len); | |
| 521 | |
| 522 /* Update for double-buffering, if we can */ | |
|
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523 SDL_NAME(XDGASetViewport)(DGA_Display, DGA_Screen, 0, 0, XDGAFlipRetrace); |
| 0 | 524 if ( flags & SDL_DOUBLEBUF ) { |
| 525 if ( mode->mode.imageHeight >= (current->h*2) ) { | |
| 526 current->flags |= SDL_DOUBLEBUF; | |
| 527 flip_page = 0; | |
| 528 flip_yoffset[0] = 0; | |
| 529 flip_yoffset[1] = current->h; | |
| 530 flip_address[0] = memory_base; | |
| 531 flip_address[1] = memory_base+screen_len; | |
| 532 surfaces_mem += screen_len; | |
| 533 surfaces_len -= screen_len; | |
| 534 } | |
| 535 } | |
| 536 | |
| 537 /* Allocate memory tracking for hardware surfaces */ | |
| 538 DGA_FreeHWSurfaces(this); | |
| 539 if ( surfaces_len < 0 ) { | |
| 540 surfaces_len = 0; | |
| 541 } | |
|
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542 DGA_InitHWSurfaces(this, current, surfaces_mem, surfaces_len); |
| 0 | 543 |
|
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544 /* Expose the back buffer as surface memory */ |
|
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545 if ( current->flags & SDL_DOUBLEBUF ) { |
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546 this->screen = current; |
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547 DGA_FlipHWSurface(this, current); |
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548 this->screen = NULL; |
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549 } |
|
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550 |
| 0 | 551 /* Set the update rectangle function */ |
| 552 this->UpdateRects = DGA_DirectUpdate; | |
| 553 | |
| 554 /* Enable mouse and keyboard support */ | |
| 555 { long input_mask; | |
| 556 input_mask = (KeyPressMask | KeyReleaseMask); | |
| 557 input_mask |= (ButtonPressMask | ButtonReleaseMask); | |
| 558 input_mask |= PointerMotionMask; | |
|
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559 SDL_NAME(XDGASelectInput)(DGA_Display, DGA_Screen, input_mask); |
| 0 | 560 } |
| 561 | |
| 562 /* We're done */ | |
| 563 return(current); | |
| 564 } | |
| 565 | |
| 566 #ifdef DGA_DEBUG | |
| 567 static void DGA_DumpHWSurfaces(_THIS) | |
| 568 { | |
| 569 vidmem_bucket *bucket; | |
| 570 | |
| 571 printf("Memory left: %d (%d total)\n", surfaces_memleft, surfaces_memtotal); | |
| 572 printf("\n"); | |
| 573 printf(" Base Size\n"); | |
| 574 for ( bucket=&surfaces; bucket; bucket=bucket->next ) { | |
| 575 printf("Bucket: %p, %d (%s)\n", bucket->base, bucket->size, bucket->used ? "used" : "free"); | |
| 576 if ( bucket->prev ) { | |
| 577 if ( bucket->base != bucket->prev->base+bucket->prev->size ) { | |
| 578 printf("Warning, corrupt bucket list! (prev)\n"); | |
| 579 } | |
| 580 } else { | |
| 581 if ( bucket != &surfaces ) { | |
| 582 printf("Warning, corrupt bucket list! (!prev)\n"); | |
| 583 } | |
| 584 } | |
| 585 if ( bucket->next ) { | |
| 586 if ( bucket->next->base != bucket->base+bucket->size ) { | |
| 587 printf("Warning, corrupt bucket list! (next)\n"); | |
| 588 } | |
| 589 } | |
| 590 } | |
| 591 printf("\n"); | |
| 592 } | |
| 593 #endif | |
| 594 | |
|
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595 static int DGA_InitHWSurfaces(_THIS, SDL_Surface *screen, Uint8 *base, int size) |
| 0 | 596 { |
|
101
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597 vidmem_bucket *bucket; |
|
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598 |
| 0 | 599 surfaces_memtotal = size; |
| 600 surfaces_memleft = size; | |
|
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601 |
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602 if ( surfaces_memleft > 0 ) { |
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603 bucket = (vidmem_bucket *)malloc(sizeof(*bucket)); |
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604 if ( bucket == NULL ) { |
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605 SDL_OutOfMemory(); |
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606 return(-1); |
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607 } |
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608 bucket->prev = &surfaces; |
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609 bucket->used = 0; |
|
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610 bucket->dirty = 0; |
|
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611 bucket->base = base; |
|
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612 bucket->size = size; |
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613 bucket->next = NULL; |
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614 } else { |
|
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|
615 bucket = NULL; |
|
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|
616 } |
|
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|
617 |
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618 surfaces.prev = NULL; |
|
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|
619 surfaces.used = 1; |
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620 surfaces.dirty = 0; |
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|
621 surfaces.base = screen->pixels; |
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622 surfaces.size = (unsigned int)((long)base - (long)surfaces.base); |
|
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|
623 surfaces.next = bucket; |
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diff
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|
624 screen->hwdata = (struct private_hwdata *)&surfaces; |
| 0 | 625 return(0); |
| 626 } | |
| 627 static void DGA_FreeHWSurfaces(_THIS) | |
| 628 { | |
| 629 vidmem_bucket *bucket, *freeable; | |
| 630 | |
| 631 bucket = surfaces.next; | |
| 632 while ( bucket ) { | |
| 633 freeable = bucket; | |
| 634 bucket = bucket->next; | |
| 635 free(freeable); | |
| 636 } | |
| 637 surfaces.next = NULL; | |
| 638 } | |
| 639 | |
|
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Some minor name changes to clean up
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diff
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|
640 static __inline__ void DGA_AddBusySurface(SDL_Surface *surface) |
|
101
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641 { |
|
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|
642 ((vidmem_bucket *)surface->hwdata)->dirty = 1; |
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643 } |
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|
644 |
|
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645 static __inline__ int DGA_IsSurfaceBusy(SDL_Surface *surface) |
|
101
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646 { |
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|
647 return ((vidmem_bucket *)surface->hwdata)->dirty; |
|
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648 } |
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|
649 |
|
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|
650 static __inline__ void DGA_WaitBusySurfaces(_THIS) |
|
101
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|
651 { |
|
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|
652 vidmem_bucket *bucket; |
|
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|
653 |
|
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|
654 /* Wait for graphic operations to complete */ |
|
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655 SDL_NAME(XDGASync)(DGA_Display, DGA_Screen); |
|
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656 |
|
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|
657 /* Clear all surface dirty bits */ |
|
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|
658 for ( bucket=&surfaces; bucket; bucket=bucket->next ) { |
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|
659 bucket->dirty = 0; |
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|
660 } |
|
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|
661 } |
|
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|
662 |
| 0 | 663 static int DGA_AllocHWSurface(_THIS, SDL_Surface *surface) |
| 664 { | |
| 665 vidmem_bucket *bucket; | |
| 666 int size; | |
| 667 int extra; | |
|
101
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|
668 int retval = 0; |
| 0 | 669 |
| 670 /* Temporarily, we only allow surfaces the same width as display. | |
| 671 Some blitters require the pitch between two hardware surfaces | |
| 672 to be the same. Others have interesting alignment restrictions. | |
| 673 */ | |
| 674 if ( surface->pitch > SDL_VideoSurface->pitch ) { | |
| 675 SDL_SetError("Surface requested wider than screen"); | |
| 676 return(-1); | |
| 677 } | |
| 678 surface->pitch = SDL_VideoSurface->pitch; | |
| 679 size = surface->h * surface->pitch; | |
| 680 #ifdef DGA_DEBUG | |
| 681 fprintf(stderr, "Allocating bucket of %d bytes\n", size); | |
| 682 #endif | |
|
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|
683 LOCK_DISPLAY(); |
| 0 | 684 |
| 685 /* Quick check for available mem */ | |
| 686 if ( size > surfaces_memleft ) { | |
| 687 SDL_SetError("Not enough video memory"); | |
|
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688 retval = -1; |
|
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|
689 goto done; |
| 0 | 690 } |
| 691 | |
| 692 /* Search for an empty bucket big enough */ | |
| 693 for ( bucket=&surfaces; bucket; bucket=bucket->next ) { | |
| 694 if ( ! bucket->used && (size <= bucket->size) ) { | |
| 695 break; | |
| 696 } | |
| 697 } | |
| 698 if ( bucket == NULL ) { | |
| 699 SDL_SetError("Video memory too fragmented"); | |
|
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|
700 retval = -1; |
|
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|
701 goto done; |
| 0 | 702 } |
| 703 | |
| 704 /* Create a new bucket for left-over memory */ | |
| 705 extra = (bucket->size - size); | |
| 706 if ( extra ) { | |
| 707 vidmem_bucket *newbucket; | |
| 708 | |
| 709 #ifdef DGA_DEBUG | |
| 710 fprintf(stderr, "Adding new free bucket of %d bytes\n", extra); | |
| 711 #endif | |
| 712 newbucket = (vidmem_bucket *)malloc(sizeof(*newbucket)); | |
| 713 if ( newbucket == NULL ) { | |
| 714 SDL_OutOfMemory(); | |
|
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715 retval = -1; |
|
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716 goto done; |
| 0 | 717 } |
| 718 newbucket->prev = bucket; | |
| 719 newbucket->used = 0; | |
| 720 newbucket->base = bucket->base+size; | |
| 721 newbucket->size = extra; | |
| 722 newbucket->next = bucket->next; | |
| 723 if ( bucket->next ) { | |
| 724 bucket->next->prev = newbucket; | |
| 725 } | |
| 726 bucket->next = newbucket; | |
| 727 } | |
| 728 | |
| 729 /* Set the current bucket values and return it! */ | |
| 730 bucket->used = 1; | |
| 731 bucket->size = size; | |
|
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|
732 bucket->dirty = 0; |
| 0 | 733 #ifdef DGA_DEBUG |
| 734 fprintf(stderr, "Allocated %d bytes at %p\n", bucket->size, bucket->base); | |
| 735 #endif | |
| 736 surfaces_memleft -= size; | |
| 737 surface->flags |= SDL_HWSURFACE; | |
| 738 surface->pixels = bucket->base; | |
|
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|
739 surface->hwdata = (struct private_hwdata *)bucket; |
|
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740 done: |
|
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|
741 UNLOCK_DISPLAY(); |
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742 return(retval); |
| 0 | 743 } |
| 744 static void DGA_FreeHWSurface(_THIS, SDL_Surface *surface) | |
| 745 { | |
| 746 vidmem_bucket *bucket, *freeable; | |
| 747 | |
| 748 /* Look for the bucket in the current list */ | |
|
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749 for ( bucket=&surfaces; bucket; bucket=bucket->next ) { |
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750 if ( bucket == (vidmem_bucket *)surface->hwdata ) { |
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|
751 break; |
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752 } |
| 0 | 753 } |
|
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754 if ( bucket && bucket->used ) { |
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755 /* Add the memory back to the total */ |
| 0 | 756 #ifdef DGA_DEBUG |
| 757 printf("Freeing bucket of %d bytes\n", bucket->size); | |
| 758 #endif | |
|
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759 surfaces_memleft += bucket->size; |
| 0 | 760 |
|
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761 /* Can we merge the space with surrounding buckets? */ |
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762 bucket->used = 0; |
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763 if ( bucket->next && ! bucket->next->used ) { |
| 0 | 764 #ifdef DGA_DEBUG |
| 765 printf("Merging with next bucket, for %d total bytes\n", bucket->size+bucket->next->size); | |
| 766 #endif | |
|
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767 freeable = bucket->next; |
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768 bucket->size += bucket->next->size; |
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769 bucket->next = bucket->next->next; |
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770 if ( bucket->next ) { |
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771 bucket->next->prev = bucket; |
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772 } |
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773 free(freeable); |
| 0 | 774 } |
|
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775 if ( bucket->prev && ! bucket->prev->used ) { |
| 0 | 776 #ifdef DGA_DEBUG |
| 777 printf("Merging with previous bucket, for %d total bytes\n", bucket->prev->size+bucket->size); | |
| 778 #endif | |
|
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779 freeable = bucket; |
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780 bucket->prev->size += bucket->size; |
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781 bucket->prev->next = bucket->next; |
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782 if ( bucket->next ) { |
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783 bucket->next->prev = bucket->prev; |
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784 } |
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785 free(freeable); |
| 0 | 786 } |
| 787 } | |
| 788 surface->pixels = NULL; | |
|
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789 surface->hwdata = NULL; |
| 0 | 790 } |
| 791 | |
|
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792 static __inline__ void DGA_dst_to_xy(_THIS, SDL_Surface *dst, int *x, int *y) |
| 0 | 793 { |
| 794 *x = (long)((Uint8 *)dst->pixels - memory_base)%memory_pitch; | |
| 795 *y = (long)((Uint8 *)dst->pixels - memory_base)/memory_pitch; | |
| 796 } | |
| 797 | |
| 798 static int DGA_FillHWRect(_THIS, SDL_Surface *dst, SDL_Rect *rect, Uint32 color) | |
| 799 { | |
| 800 int x, y; | |
| 801 unsigned int w, h; | |
| 802 | |
| 803 /* Don't fill the visible part of the screen, wait until flipped */ | |
|
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804 LOCK_DISPLAY(); |
| 0 | 805 if ( was_flipped && (dst == this->screen) ) { |
|
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806 while ( SDL_NAME(XDGAGetViewportStatus)(DGA_Display, DGA_Screen) ) |
| 0 | 807 /* Keep waiting for the hardware ... */ ; |
| 808 was_flipped = 0; | |
| 809 } | |
|
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810 DGA_dst_to_xy(this, dst, &x, &y); |
| 0 | 811 x += rect->x; |
| 812 y += rect->y; | |
| 813 w = rect->w; | |
| 814 h = rect->h; | |
| 815 #if 0 | |
| 816 printf("Hardware accelerated rectangle fill: %dx%d at %d,%d\n", w, h, x, y); | |
| 817 #endif | |
|
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818 SDL_NAME(XDGAFillRectangle)(DGA_Display, DGA_Screen, x, y, w, h, color); |
|
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|
819 if ( !(this->screen->flags & SDL_DOUBLEBUF) ) { |
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|
820 XFlush(DGA_Display); |
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821 } |
|
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822 DGA_AddBusySurface(dst); |
|
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|
823 UNLOCK_DISPLAY(); |
| 0 | 824 return(0); |
| 825 } | |
| 826 | |
| 827 static int HWAccelBlit(SDL_Surface *src, SDL_Rect *srcrect, | |
| 828 SDL_Surface *dst, SDL_Rect *dstrect) | |
| 829 { | |
| 830 SDL_VideoDevice *this; | |
| 831 int srcx, srcy; | |
| 832 int dstx, dsty; | |
| 833 unsigned int w, h; | |
| 834 | |
| 835 this = current_video; | |
| 836 /* Don't blit to the visible part of the screen, wait until flipped */ | |
|
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|
837 LOCK_DISPLAY(); |
| 0 | 838 if ( was_flipped && (dst == this->screen) ) { |
|
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|
839 while ( SDL_NAME(XDGAGetViewportStatus)(DGA_Display, DGA_Screen) ) |
| 0 | 840 /* Keep waiting for the hardware ... */ ; |
| 841 was_flipped = 0; | |
| 842 } | |
|
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843 DGA_dst_to_xy(this, src, &srcx, &srcy); |
| 0 | 844 srcx += srcrect->x; |
| 845 srcy += srcrect->y; | |
|
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846 DGA_dst_to_xy(this, dst, &dstx, &dsty); |
| 0 | 847 dstx += dstrect->x; |
| 848 dsty += dstrect->y; | |
| 849 w = srcrect->w; | |
| 850 h = srcrect->h; | |
| 851 #if 0 | |
| 852 printf("Blitting %dx%d from %d,%d to %d,%d\n", w, h, srcx, srcy, dstx, dsty); | |
| 853 #endif | |
| 854 if ( (src->flags & SDL_SRCCOLORKEY) == SDL_SRCCOLORKEY ) { | |
|
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|
855 SDL_NAME(XDGACopyTransparentArea)(DGA_Display, DGA_Screen, |
| 0 | 856 srcx, srcy, w, h, dstx, dsty, src->format->colorkey); |
| 857 } else { | |
|
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858 SDL_NAME(XDGACopyArea)(DGA_Display, DGA_Screen, |
| 0 | 859 srcx, srcy, w, h, dstx, dsty); |
| 860 } | |
|
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|
861 if ( !(this->screen->flags & SDL_DOUBLEBUF) ) { |
|
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|
862 XFlush(DGA_Display); |
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|
863 } |
|
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|
864 DGA_AddBusySurface(src); |
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865 DGA_AddBusySurface(dst); |
|
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|
866 UNLOCK_DISPLAY(); |
| 0 | 867 return(0); |
| 868 } | |
| 869 | |
| 870 static int DGA_CheckHWBlit(_THIS, SDL_Surface *src, SDL_Surface *dst) | |
| 871 { | |
| 872 int accelerated; | |
| 873 | |
| 874 /* Set initial acceleration on */ | |
| 875 src->flags |= SDL_HWACCEL; | |
| 876 | |
| 877 /* Set the surface attributes */ | |
| 878 if ( (src->flags & SDL_SRCALPHA) == SDL_SRCALPHA ) { | |
| 879 if ( ! this->info.blit_hw_A ) { | |
| 880 src->flags &= ~SDL_HWACCEL; | |
| 881 } | |
| 882 } | |
| 883 if ( (src->flags & SDL_SRCCOLORKEY) == SDL_SRCCOLORKEY ) { | |
| 884 if ( ! this->info.blit_hw_CC ) { | |
| 885 src->flags &= ~SDL_HWACCEL; | |
| 886 } | |
| 887 } | |
| 888 | |
| 889 /* Check to see if final surface blit is accelerated */ | |
| 890 accelerated = !!(src->flags & SDL_HWACCEL); | |
| 891 if ( accelerated ) { | |
| 892 src->map->hw_blit = HWAccelBlit; | |
| 893 } | |
| 894 return(accelerated); | |
| 895 } | |
| 896 | |
|
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|
897 static __inline__ void DGA_WaitFlip(_THIS) |
| 0 | 898 { |
| 899 if ( was_flipped ) { | |
|
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|
900 while ( SDL_NAME(XDGAGetViewportStatus)(DGA_Display, DGA_Screen) ) |
| 0 | 901 /* Keep waiting for the hardware ... */ ; |
| 902 was_flipped = 0; | |
| 903 } | |
| 904 } | |
| 905 | |
| 906 static int DGA_LockHWSurface(_THIS, SDL_Surface *surface) | |
| 907 { | |
|
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|
908 if ( surface == this->screen ) { |
| 0 | 909 SDL_mutexP(hw_lock); |
|
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|
910 LOCK_DISPLAY(); |
|
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911 if ( DGA_IsSurfaceBusy(surface) ) { |
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912 DGA_WaitBusySurfaces(this); |
|
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|
913 } |
|
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|
914 DGA_WaitFlip(this); |
|
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|
915 UNLOCK_DISPLAY(); |
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|
916 } else { |
|
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917 if ( DGA_IsSurfaceBusy(surface) ) { |
|
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|
918 LOCK_DISPLAY(); |
|
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919 DGA_WaitBusySurfaces(this); |
|
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920 UNLOCK_DISPLAY(); |
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|
921 } |
| 0 | 922 } |
| 923 return(0); | |
| 924 } | |
| 925 static void DGA_UnlockHWSurface(_THIS, SDL_Surface *surface) | |
| 926 { | |
|
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|
927 if ( surface == this->screen ) { |
| 0 | 928 SDL_mutexV(hw_lock); |
| 929 } | |
| 930 } | |
| 931 | |
| 932 static int DGA_FlipHWSurface(_THIS, SDL_Surface *surface) | |
| 933 { | |
| 934 /* Wait for vertical retrace and then flip display */ | |
|
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|
935 LOCK_DISPLAY(); |
|
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|
936 if ( DGA_IsSurfaceBusy(this->screen) ) { |
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937 DGA_WaitBusySurfaces(this); |
|
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|
938 } |
|
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|
939 DGA_WaitFlip(this); |
|
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940 SDL_NAME(XDGASetViewport)(DGA_Display, DGA_Screen, |
| 0 | 941 0, flip_yoffset[flip_page], XDGAFlipRetrace); |
| 942 XFlush(DGA_Display); | |
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943 UNLOCK_DISPLAY(); |
| 0 | 944 was_flipped = 1; |
| 945 flip_page = !flip_page; | |
| 946 | |
| 947 surface->pixels = flip_address[flip_page]; | |
| 948 return(0); | |
| 949 } | |
| 950 | |
| 951 static void DGA_DirectUpdate(_THIS, int numrects, SDL_Rect *rects) | |
| 952 { | |
| 953 /* The application is already updating the visible video memory */ | |
| 954 return; | |
| 955 } | |
| 956 | |
| 957 static int DGA_SetColors(_THIS, int firstcolor, int ncolors, SDL_Color *colors) | |
| 958 { | |
| 959 int i; | |
| 960 XColor *xcmap; | |
| 961 | |
| 962 /* This happens on initialization */ | |
| 963 if ( ! DGA_colormap ) { | |
| 964 return(0); | |
| 965 } | |
| 966 xcmap = (XColor *)alloca(ncolors*sizeof(*xcmap)); | |
| 967 for ( i=0; i<ncolors; ++i ) { | |
| 968 xcmap[i].pixel = firstcolor + i; | |
| 969 xcmap[i].red = (colors[i].r<<8)|colors[i].r; | |
| 970 xcmap[i].green = (colors[i].g<<8)|colors[i].g; | |
| 971 xcmap[i].blue = (colors[i].b<<8)|colors[i].b; | |
| 972 xcmap[i].flags = (DoRed|DoGreen|DoBlue); | |
| 973 } | |
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974 LOCK_DISPLAY(); |
| 0 | 975 XStoreColors(DGA_Display, DGA_colormap, xcmap, ncolors); |
| 976 XSync(DGA_Display, False); | |
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977 UNLOCK_DISPLAY(); |
| 0 | 978 |
| 979 /* That was easy. :) */ | |
| 980 return(1); | |
| 981 } | |
| 982 | |
| 983 int DGA_SetGammaRamp(_THIS, Uint16 *ramp) | |
| 984 { | |
| 985 int i, ncolors; | |
| 986 XColor xcmap[256]; | |
| 987 | |
| 988 /* See if actually setting the gamma is supported */ | |
| 989 if ( DGA_visualClass != DirectColor ) { | |
| 990 SDL_SetError("Gamma correction not supported on this visual"); | |
| 991 return(-1); | |
| 992 } | |
| 993 | |
| 994 /* Calculate the appropriate palette for the given gamma ramp */ | |
| 995 if ( this->screen->format->BitsPerPixel <= 16 ) { | |
| 996 ncolors = 64; /* Is this right? */ | |
| 997 } else { | |
| 998 ncolors = 256; | |
| 999 } | |
| 1000 for ( i=0; i<ncolors; ++i ) { | |
| 1001 Uint8 c = (256 * i / ncolors); | |
| 1002 xcmap[i].pixel = SDL_MapRGB(this->screen->format, c, c, c); | |
| 1003 xcmap[i].red = ramp[0*256+c]; | |
| 1004 xcmap[i].green = ramp[1*256+c]; | |
| 1005 xcmap[i].blue = ramp[2*256+c]; | |
| 1006 xcmap[i].flags = (DoRed|DoGreen|DoBlue); | |
| 1007 } | |
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1008 LOCK_DISPLAY(); |
| 0 | 1009 XStoreColors(DGA_Display, DGA_colormap, xcmap, ncolors); |
| 1010 XSync(DGA_Display, False); | |
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1011 UNLOCK_DISPLAY(); |
| 0 | 1012 return(0); |
| 1013 } | |
| 1014 | |
| 1015 void DGA_VideoQuit(_THIS) | |
| 1016 { | |
| 1017 int i, j; | |
| 1018 | |
| 1019 if ( DGA_Display ) { | |
| 1020 /* Free colormap, if necessary */ | |
| 1021 if ( DGA_colormap ) { | |
| 1022 XFreeColormap(DGA_Display, DGA_colormap); | |
| 1023 DGA_colormap = 0; | |
| 1024 } | |
| 1025 | |
| 1026 /* Unmap memory and reset video mode */ | |
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1027 SDL_NAME(XDGACloseFramebuffer)(DGA_Display, DGA_Screen); |
| 0 | 1028 if ( this->screen ) { |
| 1029 /* Tell SDL not to free the pixels */ | |
| 1030 this->screen->pixels = NULL; | |
| 1031 } | |
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1032 SDL_NAME(XDGASetMode)(DGA_Display, DGA_Screen, 0); |
| 0 | 1033 |
| 1034 /* Clear the lock mutex */ | |
| 1035 if ( hw_lock != NULL ) { | |
| 1036 SDL_DestroyMutex(hw_lock); | |
| 1037 hw_lock = NULL; | |
| 1038 } | |
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1039 #ifdef LOCK_DGA_DISPLAY |
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1040 if ( event_lock != NULL ) { |
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1041 SDL_DestroyMutex(event_lock); |
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1042 event_lock = NULL; |
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1043 } |
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1044 #endif /* LOCK_DGA_DISPLAY */ |
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1045 |
| 0 | 1046 |
| 1047 /* Clean up defined video modes */ | |
| 1048 for ( i=0; i<NUM_MODELISTS; ++i ) { | |
| 1049 if ( SDL_modelist[i] != NULL ) { | |
| 1050 for ( j=0; SDL_modelist[i][j]; ++j ) { | |
| 1051 free(SDL_modelist[i][j]); | |
| 1052 } | |
| 1053 free(SDL_modelist[i]); | |
| 1054 SDL_modelist[i] = NULL; | |
| 1055 } | |
| 1056 } | |
| 1057 | |
| 1058 /* Clean up the memory bucket list */ | |
| 1059 DGA_FreeHWSurfaces(this); | |
| 1060 | |
| 1061 /* Close up the display */ | |
| 1062 XCloseDisplay(DGA_Display); | |
| 1063 } | |
| 1064 } |