| 1 | /* |
| 2 | * Copyright (c) 1987, Oracle and/or its affiliates. All rights reserved. |
| 3 | * |
| 4 | * Permission is hereby granted, free of charge, to any person obtaining a |
| 5 | * copy of this software and associated documentation files (the "Software"), |
| 6 | * to deal in the Software without restriction, including without limitation |
| 7 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
| 8 | * and/or sell copies of the Software, and to permit persons to whom the |
| 9 | * Software is furnished to do so, subject to the following conditions: |
| 10 | * |
| 11 | * The above copyright notice and this permission notice (including the next |
| 12 | * paragraph) shall be included in all copies or substantial portions of the |
| 13 | * Software. |
| 14 | * |
| 15 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| 16 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 17 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| 18 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| 19 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING |
| 20 | * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER |
| 21 | * DEALINGS IN THE SOFTWARE. |
| 22 | */ |
| 23 | |
| 24 | /* |
| 25 | * This is based on cfbcmap.c. The functions here are useful independently |
| 26 | * of cfb, which is the reason for including them here. How "mi" these |
| 27 | * are may be debatable. |
| 28 | */ |
| 29 | |
| 30 | #ifdef HAVE_DIX_CONFIG_H |
| 31 | #include <dix-config.h> |
| 32 | #endif |
| 33 | |
| 34 | #include <X11/X.h> |
| 35 | #include <X11/Xproto.h> |
| 36 | #include "scrnintstr.h" |
| 37 | #include "colormapst.h" |
| 38 | #include "resource.h" |
| 39 | #include "globals.h" |
| 40 | #include "micmap.h" |
| 41 | |
| 42 | DevPrivateKeyRec micmapScrPrivateKeyRec; |
| 43 | |
| 44 | int |
| 45 | miListInstalledColormaps(ScreenPtr pScreen, Colormap * pmaps) |
| 46 | { |
| 47 | if (GetInstalledmiColormap(pScreen)) { |
| 48 | *pmaps = GetInstalledmiColormap(pScreen)->mid; |
| 49 | return 1; |
| 50 | } |
| 51 | return 0; |
| 52 | } |
| 53 | |
| 54 | void |
| 55 | miInstallColormap(ColormapPtr pmap) |
| 56 | { |
| 57 | ColormapPtr oldpmap = GetInstalledmiColormap(pmap->pScreen); |
| 58 | |
| 59 | if (pmap != oldpmap) { |
| 60 | /* Uninstall pInstalledMap. No hardware changes required, just |
| 61 | * notify all interested parties. */ |
| 62 | if (oldpmap != (ColormapPtr) None) |
| 63 | WalkTree(pmap->pScreen, TellLostMap, (char *) &oldpmap->mid); |
| 64 | /* Install pmap */ |
| 65 | SetInstalledmiColormap(pmap->pScreen, pmap); |
| 66 | WalkTree(pmap->pScreen, TellGainedMap, (char *) &pmap->mid); |
| 67 | |
| 68 | } |
| 69 | } |
| 70 | |
| 71 | void |
| 72 | miUninstallColormap(ColormapPtr pmap) |
| 73 | { |
| 74 | ColormapPtr curpmap = GetInstalledmiColormap(pmap->pScreen); |
| 75 | |
| 76 | if (pmap == curpmap) { |
| 77 | if (pmap->mid != pmap->pScreen->defColormap) { |
| 78 | dixLookupResourceByType((pointer *) &curpmap, |
| 79 | pmap->pScreen->defColormap, |
| 80 | RT_COLORMAP, serverClient, DixUseAccess); |
| 81 | (*pmap->pScreen->InstallColormap) (curpmap); |
| 82 | } |
| 83 | } |
| 84 | } |
| 85 | |
| 86 | void |
| 87 | miResolveColor(unsigned short *pred, unsigned short *pgreen, |
| 88 | unsigned short *pblue, VisualPtr pVisual) |
| 89 | { |
| 90 | int shift = 16 - pVisual->bitsPerRGBValue; |
| 91 | unsigned lim = (1 << pVisual->bitsPerRGBValue) - 1; |
| 92 | |
| 93 | if ((pVisual->class | DynamicClass) == GrayScale) { |
| 94 | /* rescale to gray then rgb bits */ |
| 95 | *pred = (30L * *pred + 59L * *pgreen + 11L * *pblue) / 100; |
| 96 | *pblue = *pgreen = *pred = ((*pred >> shift) * 65535) / lim; |
| 97 | } |
| 98 | else { |
| 99 | /* rescale to rgb bits */ |
| 100 | *pred = ((*pred >> shift) * 65535) / lim; |
| 101 | *pgreen = ((*pgreen >> shift) * 65535) / lim; |
| 102 | *pblue = ((*pblue >> shift) * 65535) / lim; |
| 103 | } |
| 104 | } |
| 105 | |
| 106 | Bool |
| 107 | miInitializeColormap(ColormapPtr pmap) |
| 108 | { |
| 109 | unsigned i; |
| 110 | VisualPtr pVisual; |
| 111 | unsigned lim, maxent, shift; |
| 112 | |
| 113 | pVisual = pmap->pVisual; |
| 114 | lim = (1 << pVisual->bitsPerRGBValue) - 1; |
| 115 | shift = 16 - pVisual->bitsPerRGBValue; |
| 116 | maxent = pVisual->ColormapEntries - 1; |
| 117 | if (pVisual->class == TrueColor) { |
| 118 | unsigned limr, limg, limb; |
| 119 | |
| 120 | limr = pVisual->redMask >> pVisual->offsetRed; |
| 121 | limg = pVisual->greenMask >> pVisual->offsetGreen; |
| 122 | limb = pVisual->blueMask >> pVisual->offsetBlue; |
| 123 | for (i = 0; i <= maxent; i++) { |
| 124 | /* rescale to [0..65535] then rgb bits */ |
| 125 | pmap->red[i].co.local.red = |
| 126 | ((((i * 65535) / limr) >> shift) * 65535) / lim; |
| 127 | pmap->green[i].co.local.green = |
| 128 | ((((i * 65535) / limg) >> shift) * 65535) / lim; |
| 129 | pmap->blue[i].co.local.blue = |
| 130 | ((((i * 65535) / limb) >> shift) * 65535) / lim; |
| 131 | } |
| 132 | } |
| 133 | else if (pVisual->class == StaticColor) { |
| 134 | unsigned limr, limg, limb; |
| 135 | |
| 136 | limr = pVisual->redMask >> pVisual->offsetRed; |
| 137 | limg = pVisual->greenMask >> pVisual->offsetGreen; |
| 138 | limb = pVisual->blueMask >> pVisual->offsetBlue; |
| 139 | for (i = 0; i <= maxent; i++) { |
| 140 | /* rescale to [0..65535] then rgb bits */ |
| 141 | pmap->red[i].co.local.red = |
| 142 | ((((((i & pVisual->redMask) >> pVisual->offsetRed) |
| 143 | * 65535) / limr) >> shift) * 65535) / lim; |
| 144 | pmap->red[i].co.local.green = |
| 145 | ((((((i & pVisual->greenMask) >> pVisual->offsetGreen) |
| 146 | * 65535) / limg) >> shift) * 65535) / lim; |
| 147 | pmap->red[i].co.local.blue = |
| 148 | ((((((i & pVisual->blueMask) >> pVisual->offsetBlue) |
| 149 | * 65535) / limb) >> shift) * 65535) / lim; |
| 150 | } |
| 151 | } |
| 152 | else if (pVisual->class == StaticGray) { |
| 153 | for (i = 0; i <= maxent; i++) { |
| 154 | /* rescale to [0..65535] then rgb bits */ |
| 155 | pmap->red[i].co.local.red = ((((i * 65535) / maxent) >> shift) |
| 156 | * 65535) / lim; |
| 157 | pmap->red[i].co.local.green = pmap->red[i].co.local.red; |
| 158 | pmap->red[i].co.local.blue = pmap->red[i].co.local.red; |
| 159 | } |
| 160 | } |
| 161 | return TRUE; |
| 162 | } |
| 163 | |
| 164 | /* When simulating DirectColor on PseudoColor hardware, multiple |
| 165 | entries of the colormap must be updated |
| 166 | */ |
| 167 | |
| 168 | #define AddElement(mask) { \ |
| 169 | pixel = red | green | blue; \ |
| 170 | for (i = 0; i < nresult; i++) \ |
| 171 | if (outdefs[i].pixel == pixel) \ |
| 172 | break; \ |
| 173 | if (i == nresult) \ |
| 174 | { \ |
| 175 | nresult++; \ |
| 176 | outdefs[i].pixel = pixel; \ |
| 177 | outdefs[i].flags = 0; \ |
| 178 | } \ |
| 179 | outdefs[i].flags |= (mask); \ |
| 180 | outdefs[i].red = pmap->red[red >> pVisual->offsetRed].co.local.red; \ |
| 181 | outdefs[i].green = pmap->green[green >> pVisual->offsetGreen].co.local.green; \ |
| 182 | outdefs[i].blue = pmap->blue[blue >> pVisual->offsetBlue].co.local.blue; \ |
| 183 | } |
| 184 | |
| 185 | int |
| 186 | miExpandDirectColors(ColormapPtr pmap, int ndef, xColorItem * indefs, |
| 187 | xColorItem * outdefs) |
| 188 | { |
| 189 | int red, green, blue; |
| 190 | int maxred, maxgreen, maxblue; |
| 191 | int stepred, stepgreen, stepblue; |
| 192 | VisualPtr pVisual; |
| 193 | int pixel; |
| 194 | int nresult; |
| 195 | int i; |
| 196 | |
| 197 | pVisual = pmap->pVisual; |
| 198 | |
| 199 | stepred = 1 << pVisual->offsetRed; |
| 200 | stepgreen = 1 << pVisual->offsetGreen; |
| 201 | stepblue = 1 << pVisual->offsetBlue; |
| 202 | maxred = pVisual->redMask; |
| 203 | maxgreen = pVisual->greenMask; |
| 204 | maxblue = pVisual->blueMask; |
| 205 | nresult = 0; |
| 206 | for (; ndef--; indefs++) { |
| 207 | if (indefs->flags & DoRed) { |
| 208 | red = indefs->pixel & pVisual->redMask; |
| 209 | for (green = 0; green <= maxgreen; green += stepgreen) { |
| 210 | for (blue = 0; blue <= maxblue; blue += stepblue) { |
| 211 | AddElement(DoRed) |
| 212 | } |
| 213 | } |
| 214 | } |
| 215 | if (indefs->flags & DoGreen) { |
| 216 | green = indefs->pixel & pVisual->greenMask; |
| 217 | for (red = 0; red <= maxred; red += stepred) { |
| 218 | for (blue = 0; blue <= maxblue; blue += stepblue) { |
| 219 | AddElement(DoGreen) |
| 220 | } |
| 221 | } |
| 222 | } |
| 223 | if (indefs->flags & DoBlue) { |
| 224 | blue = indefs->pixel & pVisual->blueMask; |
| 225 | for (red = 0; red <= maxred; red += stepred) { |
| 226 | for (green = 0; green <= maxgreen; green += stepgreen) { |
| 227 | AddElement(DoBlue) |
| 228 | } |
| 229 | } |
| 230 | } |
| 231 | } |
| 232 | return nresult; |
| 233 | } |
| 234 | |
| 235 | Bool |
| 236 | miCreateDefColormap(ScreenPtr pScreen) |
| 237 | { |
| 238 | /* |
| 239 | * In the following sources PC X server vendors may want to delete |
| 240 | * "_not_tog" from "#ifdef WIN32_not_tog" |
| 241 | */ |
| 242 | #ifdef WIN32_not_tog |
| 243 | /* |
| 244 | * these are the MS-Windows desktop colors, adjusted for X's 16-bit |
| 245 | * color specifications. |
| 246 | */ |
| 247 | static xColorItem citems[] = { |
| 248 | {0, 0, 0, 0, 0, 0}, |
| 249 | {1, 0x8000, 0, 0, 0, 0}, |
| 250 | {2, 0, 0x8000, 0, 0, 0}, |
| 251 | {3, 0x8000, 0x8000, 0, 0, 0}, |
| 252 | {4, 0, 0, 0x8000, 0, 0}, |
| 253 | {5, 0x8000, 0, 0x8000, 0, 0}, |
| 254 | {6, 0, 0x8000, 0x8000, 0, 0}, |
| 255 | {7, 0xc000, 0xc000, 0xc000, 0, 0}, |
| 256 | {8, 0xc000, 0xdc00, 0xc000, 0, 0}, |
| 257 | {9, 0xa600, 0xca00, 0xf000, 0, 0}, |
| 258 | {246, 0xff00, 0xfb00, 0xf000, 0, 0}, |
| 259 | {247, 0xa000, 0xa000, 0xa400, 0, 0}, |
| 260 | {248, 0x8000, 0x8000, 0x8000, 0, 0}, |
| 261 | {249, 0xff00, 0, 0, 0, 0}, |
| 262 | {250, 0, 0xff00, 0, 0, 0}, |
| 263 | {251, 0xff00, 0xff00, 0, 0, 0}, |
| 264 | {252, 0, 0, 0xff00, 0, 0}, |
| 265 | {253, 0xff00, 0, 0xff00, 0, 0}, |
| 266 | {254, 0, 0xff00, 0xff00, 0, 0}, |
| 267 | {255, 0xff00, 0xff00, 0xff00, 0, 0} |
| 268 | }; |
| 269 | #define NUM_DESKTOP_COLORS sizeof citems / sizeof citems[0] |
| 270 | int i; |
| 271 | #else |
| 272 | unsigned short zero = 0, ones = 0xFFFF; |
| 273 | #endif |
| 274 | Pixel wp, bp; |
| 275 | VisualPtr pVisual; |
| 276 | ColormapPtr cmap; |
| 277 | int alloctype; |
| 278 | |
| 279 | if (!dixRegisterPrivateKey(&micmapScrPrivateKeyRec, PRIVATE_SCREEN, 0)) |
| 280 | return FALSE; |
| 281 | |
| 282 | for (pVisual = pScreen->visuals; |
| 283 | pVisual->vid != pScreen->rootVisual; pVisual++); |
| 284 | |
| 285 | if (pScreen->rootDepth == 1 || (pVisual->class & DynamicClass)) |
| 286 | alloctype = AllocNone; |
| 287 | else |
| 288 | alloctype = AllocAll; |
| 289 | |
| 290 | if (CreateColormap(pScreen->defColormap, pScreen, pVisual, &cmap, |
| 291 | alloctype, 0) != Success) |
| 292 | return FALSE; |
| 293 | |
| 294 | if (pScreen->rootDepth > 1) { |
| 295 | wp = pScreen->whitePixel; |
| 296 | bp = pScreen->blackPixel; |
| 297 | #ifdef WIN32_not_tog |
| 298 | for (i = 0; i < NUM_DESKTOP_COLORS; i++) { |
| 299 | if (AllocColor(cmap, |
| 300 | &citems[i].red, &citems[i].green, &citems[i].blue, |
| 301 | &citems[i].pixel, 0) != Success) |
| 302 | return FALSE; |
| 303 | } |
| 304 | #else |
| 305 | if ((AllocColor(cmap, &ones, &ones, &ones, &wp, 0) != |
| 306 | Success) || |
| 307 | (AllocColor(cmap, &zero, &zero, &zero, &bp, 0) != Success)) |
| 308 | return FALSE; |
| 309 | pScreen->whitePixel = wp; |
| 310 | pScreen->blackPixel = bp; |
| 311 | #endif |
| 312 | } |
| 313 | |
| 314 | (*pScreen->InstallColormap) (cmap); |
| 315 | return TRUE; |
| 316 | } |
| 317 | |
| 318 | /* |
| 319 | * Default true color bitmasks, should be overridden by |
| 320 | * driver |
| 321 | */ |
| 322 | |
| 323 | #define _RZ(d) ((d + 2) / 3) |
| 324 | #define _RS(d) 0 |
| 325 | #define _RM(d) ((1 << _RZ(d)) - 1) |
| 326 | #define _GZ(d) ((d - _RZ(d) + 1) / 2) |
| 327 | #define _GS(d) _RZ(d) |
| 328 | #define _GM(d) (((1 << _GZ(d)) - 1) << _GS(d)) |
| 329 | #define _BZ(d) (d - _RZ(d) - _GZ(d)) |
| 330 | #define _BS(d) (_RZ(d) + _GZ(d)) |
| 331 | #define _BM(d) (((1 << _BZ(d)) - 1) << _BS(d)) |
| 332 | #define _CE(d) (1 << _RZ(d)) |
| 333 | |
| 334 | typedef struct _miVisuals { |
| 335 | struct _miVisuals *next; |
| 336 | int depth; |
| 337 | int bitsPerRGB; |
| 338 | int visuals; |
| 339 | int count; |
| 340 | int preferredCVC; |
| 341 | Pixel redMask, greenMask, blueMask; |
| 342 | } miVisualsRec, *miVisualsPtr; |
| 343 | |
| 344 | static int miVisualPriority[] = { |
| 345 | PseudoColor, GrayScale, StaticColor, TrueColor, DirectColor, StaticGray |
| 346 | }; |
| 347 | |
| 348 | #define NUM_PRIORITY 6 |
| 349 | |
| 350 | static miVisualsPtr miVisuals; |
| 351 | |
| 352 | void |
| 353 | miClearVisualTypes(void) |
| 354 | { |
| 355 | miVisualsPtr v; |
| 356 | |
| 357 | while ((v = miVisuals)) { |
| 358 | miVisuals = v->next; |
| 359 | free(v); |
| 360 | } |
| 361 | } |
| 362 | |
| 363 | Bool |
| 364 | miSetVisualTypesAndMasks(int depth, int visuals, int bitsPerRGB, |
| 365 | int preferredCVC, |
| 366 | Pixel redMask, Pixel greenMask, Pixel blueMask) |
| 367 | { |
| 368 | miVisualsPtr new, *prev, v; |
| 369 | int count; |
| 370 | |
| 371 | new = malloc(sizeof *new); |
| 372 | if (!new) |
| 373 | return FALSE; |
| 374 | if (!redMask || !greenMask || !blueMask) { |
| 375 | redMask = _RM(depth); |
| 376 | greenMask = _GM(depth); |
| 377 | blueMask = _BM(depth); |
| 378 | } |
| 379 | new->next = 0; |
| 380 | new->depth = depth; |
| 381 | new->visuals = visuals; |
| 382 | new->bitsPerRGB = bitsPerRGB; |
| 383 | new->preferredCVC = preferredCVC; |
| 384 | new->redMask = redMask; |
| 385 | new->greenMask = greenMask; |
| 386 | new->blueMask = blueMask; |
| 387 | count = (visuals >> 1) & 033333333333; |
| 388 | count = visuals - count - ((count >> 1) & 033333333333); |
| 389 | count = (((count + (count >> 3)) & 030707070707) % 077); /* HAKMEM 169 */ |
| 390 | new->count = count; |
| 391 | for (prev = &miVisuals; (v = *prev); prev = &v->next); |
| 392 | *prev = new; |
| 393 | return TRUE; |
| 394 | } |
| 395 | |
| 396 | Bool |
| 397 | miSetVisualTypes(int depth, int visuals, int bitsPerRGB, int preferredCVC) |
| 398 | { |
| 399 | return miSetVisualTypesAndMasks(depth, visuals, bitsPerRGB, |
| 400 | preferredCVC, 0, 0, 0); |
| 401 | } |
| 402 | |
| 403 | int |
| 404 | miGetDefaultVisualMask(int depth) |
| 405 | { |
| 406 | if (depth > MAX_PSEUDO_DEPTH) |
| 407 | return LARGE_VISUALS; |
| 408 | else if (depth >= MIN_TRUE_DEPTH) |
| 409 | return ALL_VISUALS; |
| 410 | else if (depth == 1) |
| 411 | return StaticGrayMask; |
| 412 | else |
| 413 | return SMALL_VISUALS; |
| 414 | } |
| 415 | |
| 416 | static Bool |
| 417 | miVisualTypesSet(int depth) |
| 418 | { |
| 419 | miVisualsPtr visuals; |
| 420 | |
| 421 | for (visuals = miVisuals; visuals; visuals = visuals->next) |
| 422 | if (visuals->depth == depth) |
| 423 | return TRUE; |
| 424 | return FALSE; |
| 425 | } |
| 426 | |
| 427 | Bool |
| 428 | miSetPixmapDepths(void) |
| 429 | { |
| 430 | int d, f; |
| 431 | |
| 432 | /* Add any unlisted depths from the pixmap formats */ |
| 433 | for (f = 0; f < screenInfo.numPixmapFormats; f++) { |
| 434 | d = screenInfo.formats[f].depth; |
| 435 | if (!miVisualTypesSet(d)) { |
| 436 | if (!miSetVisualTypes(d, 0, 0, -1)) |
| 437 | return FALSE; |
| 438 | } |
| 439 | } |
| 440 | return TRUE; |
| 441 | } |
| 442 | |
| 443 | /* |
| 444 | * Distance to least significant one bit |
| 445 | */ |
| 446 | static int |
| 447 | maskShift(Pixel p) |
| 448 | { |
| 449 | int s; |
| 450 | |
| 451 | if (!p) |
| 452 | return 0; |
| 453 | s = 0; |
| 454 | while (!(p & 1)) { |
| 455 | s++; |
| 456 | p >>= 1; |
| 457 | } |
| 458 | return s; |
| 459 | } |
| 460 | |
| 461 | /* |
| 462 | * Given a list of formats for a screen, create a list |
| 463 | * of visuals and depths for the screen which corespond to |
| 464 | * the set which can be used with this version of cfb. |
| 465 | */ |
| 466 | |
| 467 | Bool |
| 468 | miInitVisuals(VisualPtr * visualp, DepthPtr * depthp, int *nvisualp, |
| 469 | int *ndepthp, int *rootDepthp, VisualID * defaultVisp, |
| 470 | unsigned long sizes, int bitsPerRGB, int preferredVis) |
| 471 | { |
| 472 | int i, j = 0, k; |
| 473 | VisualPtr visual; |
| 474 | DepthPtr depth; |
| 475 | VisualID *vid; |
| 476 | int d, b; |
| 477 | int f; |
| 478 | int ndepth, nvisual; |
| 479 | int nvtype; |
| 480 | int vtype; |
| 481 | miVisualsPtr visuals, nextVisuals; |
| 482 | int *preferredCVCs, *prefp; |
| 483 | int first_depth; |
| 484 | |
| 485 | /* none specified, we'll guess from pixmap formats */ |
| 486 | if (!miVisuals) { |
| 487 | for (f = 0; f < screenInfo.numPixmapFormats; f++) { |
| 488 | d = screenInfo.formats[f].depth; |
| 489 | b = screenInfo.formats[f].bitsPerPixel; |
| 490 | if (sizes & (1 << (b - 1))) |
| 491 | vtype = miGetDefaultVisualMask(d); |
| 492 | else |
| 493 | vtype = 0; |
| 494 | if (!miSetVisualTypes(d, vtype, bitsPerRGB, -1)) |
| 495 | return FALSE; |
| 496 | } |
| 497 | } |
| 498 | nvisual = 0; |
| 499 | ndepth = 0; |
| 500 | for (visuals = miVisuals; visuals; visuals = nextVisuals) { |
| 501 | nextVisuals = visuals->next; |
| 502 | ndepth++; |
| 503 | nvisual += visuals->count; |
| 504 | } |
| 505 | depth = malloc(ndepth * sizeof(DepthRec)); |
| 506 | visual = malloc(nvisual * sizeof(VisualRec)); |
| 507 | preferredCVCs = malloc(ndepth * sizeof(int)); |
| 508 | if (!depth || !visual || !preferredCVCs) { |
| 509 | free(depth); |
| 510 | free(visual); |
| 511 | free(preferredCVCs); |
| 512 | return FALSE; |
| 513 | } |
| 514 | *depthp = depth; |
| 515 | *visualp = visual; |
| 516 | *ndepthp = ndepth; |
| 517 | *nvisualp = nvisual; |
| 518 | prefp = preferredCVCs; |
| 519 | for (visuals = miVisuals; visuals; visuals = nextVisuals) { |
| 520 | nextVisuals = visuals->next; |
| 521 | d = visuals->depth; |
| 522 | vtype = visuals->visuals; |
| 523 | nvtype = visuals->count; |
| 524 | *prefp = visuals->preferredCVC; |
| 525 | prefp++; |
| 526 | vid = NULL; |
| 527 | if (nvtype) { |
| 528 | vid = malloc(nvtype * sizeof(VisualID)); |
| 529 | if (!vid) { |
| 530 | free(depth); |
| 531 | free(visual); |
| 532 | free(preferredCVCs); |
| 533 | return FALSE; |
| 534 | } |
| 535 | } |
| 536 | depth->depth = d; |
| 537 | depth->numVids = nvtype; |
| 538 | depth->vids = vid; |
| 539 | depth++; |
| 540 | for (i = 0; i < NUM_PRIORITY; i++) { |
| 541 | if (!(vtype & (1 << miVisualPriority[i]))) |
| 542 | continue; |
| 543 | visual->class = miVisualPriority[i]; |
| 544 | visual->bitsPerRGBValue = visuals->bitsPerRGB; |
| 545 | visual->ColormapEntries = 1 << d; |
| 546 | visual->nplanes = d; |
| 547 | visual->vid = *vid = FakeClientID(0); |
| 548 | switch (visual->class) { |
| 549 | case PseudoColor: |
| 550 | case GrayScale: |
| 551 | case StaticGray: |
| 552 | visual->redMask = 0; |
| 553 | visual->greenMask = 0; |
| 554 | visual->blueMask = 0; |
| 555 | visual->offsetRed = 0; |
| 556 | visual->offsetGreen = 0; |
| 557 | visual->offsetBlue = 0; |
| 558 | break; |
| 559 | case DirectColor: |
| 560 | case TrueColor: |
| 561 | visual->ColormapEntries = _CE(d); |
| 562 | /* fall through */ |
| 563 | case StaticColor: |
| 564 | visual->redMask = visuals->redMask; |
| 565 | visual->greenMask = visuals->greenMask; |
| 566 | visual->blueMask = visuals->blueMask; |
| 567 | visual->offsetRed = maskShift(visuals->redMask); |
| 568 | visual->offsetGreen = maskShift(visuals->greenMask); |
| 569 | visual->offsetBlue = maskShift(visuals->blueMask); |
| 570 | } |
| 571 | vid++; |
| 572 | visual++; |
| 573 | } |
| 574 | free(visuals); |
| 575 | } |
| 576 | miVisuals = NULL; |
| 577 | visual = *visualp; |
| 578 | depth = *depthp; |
| 579 | |
| 580 | /* |
| 581 | * if we did not supplyied by a preferred visual class |
| 582 | * check if there is a preferred class in one of the depth |
| 583 | * structures - if there is, we want to start looking for the |
| 584 | * default visual/depth from that depth. |
| 585 | */ |
| 586 | first_depth = 0; |
| 587 | if (preferredVis < 0 && defaultColorVisualClass < 0) { |
| 588 | for (i = 0; i < ndepth; i++) { |
| 589 | if (preferredCVCs[i] >= 0) { |
| 590 | first_depth = i; |
| 591 | break; |
| 592 | } |
| 593 | } |
| 594 | } |
| 595 | |
| 596 | for (i = first_depth; i < ndepth; i++) { |
| 597 | int prefColorVisualClass = -1; |
| 598 | |
| 599 | if (defaultColorVisualClass >= 0) |
| 600 | prefColorVisualClass = defaultColorVisualClass; |
| 601 | else if (preferredVis >= 0) |
| 602 | prefColorVisualClass = preferredVis; |
| 603 | else if (preferredCVCs[i] >= 0) |
| 604 | prefColorVisualClass = preferredCVCs[i]; |
| 605 | |
| 606 | if (*rootDepthp && *rootDepthp != depth[i].depth) |
| 607 | continue; |
| 608 | |
| 609 | for (j = 0; j < depth[i].numVids; j++) { |
| 610 | for (k = 0; k < nvisual; k++) |
| 611 | if (visual[k].vid == depth[i].vids[j]) |
| 612 | break; |
| 613 | if (k == nvisual) |
| 614 | continue; |
| 615 | if (prefColorVisualClass < 0 || |
| 616 | visual[k].class == prefColorVisualClass) |
| 617 | break; |
| 618 | } |
| 619 | if (j != depth[i].numVids) |
| 620 | break; |
| 621 | } |
| 622 | if (i == ndepth) { |
| 623 | i = 0; |
| 624 | j = 0; |
| 625 | } |
| 626 | *rootDepthp = depth[i].depth; |
| 627 | *defaultVisp = depth[i].vids[j]; |
| 628 | free(preferredCVCs); |
| 629 | |
| 630 | return TRUE; |
| 631 | } |