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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 | } |