aboutsummaryrefslogtreecommitdiff
path: root/nx-X11/programs/Xserver/hw/dmx/glxProxy/glxvisuals.c
blob: c20e9551e8121c767b568605fe7982073f164aef (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
/*
** License Applicability. Except to the extent portions of this file are
** made subject to an alternative license as permitted in the SGI Free
** Software License B, Version 1.1 (the "License"), the contents of this
** file are subject only to the provisions of the License. You may not use
** this file except in compliance with the License. You may obtain a copy
** of the License at Silicon Graphics, Inc., attn: Legal Services, 1600
** Amphitheatre Parkway, Mountain View, CA 94043-1351, or at:
**
** http://oss.sgi.com/projects/FreeB
**
** Note that, as provided in the License, the Software is distributed on an
** "AS IS" basis, with ALL EXPRESS AND IMPLIED WARRANTIES AND CONDITIONS
** DISCLAIMED, INCLUDING, WITHOUT LIMITATION, ANY IMPLIED WARRANTIES AND
** CONDITIONS OF MERCHANTABILITY, SATISFACTORY QUALITY, FITNESS FOR A
** PARTICULAR PURPOSE, AND NON-INFRINGEMENT.
**
** Original Code. The Original Code is: OpenGL Sample Implementation,
** Version 1.2.1, released January 26, 2000, developed by Silicon Graphics,
** Inc. The Original Code is Copyright (c) 1991-2000 Silicon Graphics, Inc.
** Copyright in any portions created by third parties is as indicated
** elsewhere herein. All Rights Reserved.
**
** Additional Notice Provisions: The application programming interfaces
** established by SGI in conjunction with the Original Code are The
** OpenGL(R) Graphics System: A Specification (Version 1.2.1), released
** April 1, 1999; The OpenGL(R) Graphics System Utility Library (Version
** 1.3), released November 4, 1998; and OpenGL(R) Graphics with the X
** Window System(R) (Version 1.3), released October 19, 1998. This software
** was created using the OpenGL(R) version 1.2.1 Sample Implementation
** published by SGI, but has not been independently verified as being
** compliant with the OpenGL(R) version 1.2.1 Specification.
**
*/

#ifdef HAVE_DMX_CONFIG_H
#include <dmx-config.h>
#endif

#include "dmx.h"
#include "glxserver.h"
#include "glxutil.h"
#include "dmx_glxvisuals.h"

static int                 numConfigs     = 0;
static __GLXvisualConfig  *visualConfigs  = NULL;
static void              **visualPrivates = NULL;

int glxVisualsMatch( __GLXvisualConfig *v1, __GLXvisualConfig *v2 )
{
      if ( (v1->class == v2->class) &&
           (v1->rgba == v2->rgba) &&
	   (v1->redSize == v2->redSize) &&
	   (v1->greenSize == v2->greenSize) &&
	   (v1->blueSize == v2->blueSize) &&
	   (v1->alphaSize == v2->alphaSize) &&
	   (v1->redMask == v2->redMask) &&
	   (v1->greenMask == v2->greenMask) &&
	   (v1->blueMask == v2->blueMask) &&
	   (v1->alphaMask == v2->alphaMask) &&
	   (v1->accumRedSize == v2->accumRedSize) &&
	   (v1->accumGreenSize == v2->accumGreenSize) &&
	   (v1->accumBlueSize == v2->accumBlueSize) &&
	   (v1->accumAlphaSize == v2->accumAlphaSize) &&
	   (v1->doubleBuffer == v2->doubleBuffer) &&
	   (v1->stereo == v2->stereo) &&
	   (v1->bufferSize == v2->bufferSize) &&
	   (v1->depthSize == v2->depthSize) &&
	   (v1->stencilSize == v2->stencilSize) &&
	   (v1->auxBuffers == v2->auxBuffers) &&
	   (v1->level == v2->level) &&
	   (v1->visualRating == v2->visualRating) &&
	   (v1->transparentPixel == v2->transparentPixel) &&
	   (v1->transparentRed == v2->transparentRed) &&
	   (v1->transparentGreen == v2->transparentGreen) &&
	   (v1->transparentBlue == v2->transparentBlue) &&
	   (v1->transparentAlpha == v2->transparentAlpha) &&
	   (v1->transparentIndex == v2->transparentIndex) &&
	   (v1->multiSampleSize == v2->multiSampleSize) &&
	   (v1->nMultiSampleBuffers == v2->nMultiSampleBuffers) &&
	   (v1->visualSelectGroup == v2->visualSelectGroup)         ) {

	      return(1);

      }

      return(0);

}

VisualID glxMatchGLXVisualInConfigList( __GLXvisualConfig *pGlxVisual, __GLXvisualConfig *configs, int nconfigs )
{
    int i;

    for (i=0; i<nconfigs; i++) {

       if (glxVisualsMatch( pGlxVisual, &configs[i] )) {

	  return( configs[i].vid );

       }
    }

    return(0);
}

VisualID glxMatchVisualInConfigList( ScreenPtr pScreen, VisualPtr pVisual, __GLXvisualConfig *configs, int nconfigs )
{
    __GLXscreenInfo *pGlxScreen;
    __GLXvisualConfig *pGlxVisual;
    int i;

    /* check that the glx extension has been initialized */
    if ( !__glXActiveScreens ) 
       return(0);

    pGlxScreen = &__glXActiveScreens[pScreen->myNum];
    pGlxVisual = pGlxScreen->pGlxVisual;

    /* find the glx visual info for pVisual */
    for (i = 0; i < pGlxScreen->numVisuals; i++, pGlxVisual++) {
	if (pGlxVisual->vid == pVisual->vid) {
	    break;
	}
    }
    if (i == pGlxScreen->numVisuals) {
	/*
	 * the visual is not supported by glx
	 */
        return(0);
    }

    return( glxMatchGLXVisualInConfigList(pGlxVisual, configs, nconfigs) );
}

VisualPtr glxMatchVisual( ScreenPtr pScreen, VisualPtr pVisual, ScreenPtr pMatchScreen )
{
    __GLXscreenInfo *pGlxScreen2;
    int j;
    VisualID vid;

    /* check that the glx extension has been initialized */
    if ( !__glXActiveScreens ) 
       return NULL;

    pGlxScreen2 = &__glXActiveScreens[pMatchScreen->myNum];

    vid = glxMatchVisualInConfigList( pScreen, pVisual,
                                      pGlxScreen2->pGlxVisual,
				      pGlxScreen2->numVisuals );
    if (vid) {
       /*
    	* find the X visual of the matching glx visual
	*/
       for (j=0; j<pMatchScreen->numVisuals; j++) {
	  if (vid == pMatchScreen->visuals[j].vid) {
	     return( &pMatchScreen->visuals[j] );
	  }
       }
    }

    return(0);
}

void glxSetVisualConfigs(int nconfigs, __GLXvisualConfig *configs,
                 void **privates)
{
    numConfigs = nconfigs;
    visualConfigs = configs;
    visualPrivates = privates;
}

static int count_bits(unsigned int n)
{
   int bits = 0;

   while (n > 0) {
      if (n & 1) bits++;
      n >>= 1;
   }
   return bits;
}

static VisualID FindClosestVisual( VisualPtr pVisual, int rootDepth, 
                                   DepthPtr pdepth, int ndepths,
				   VisualPtr pNewVisual, int numNewVisuals)
{
   int d, v;
   VisualPtr vis;

   /*
    * find the first visual with the same or deeper depth
    * of the same class.
    */
   for (d=0; d<ndepths; d++) {
      if (pdepth[d].depth >= rootDepth) {
	 for (v=0; v<pdepth[d].numVids; v++) {

	    /* find the new visual structure */
	    vis = pNewVisual;
	    while( pdepth[d].vids[v] != vis->vid ) vis++;

	    if (vis->class == pVisual->class) {
	       return( pdepth[d].vids[v] );
	    }
	 }
      }
   }

   /*
    * did not find any.
    * try to look for the same class only.
    */
   for (d=0; d<ndepths; d++) {
      for (v=0; v<pdepth[d].numVids; v++) {

	 /* find the new visual structure */
      	 vis = pNewVisual;
	 while( pdepth[d].vids[v] != vis->vid ) vis++;

      	 if (vis->class == pVisual->class) {
	    return( pdepth[d].vids[v] );
	 }
      }
   }

   /*
    * if not found - just take the first visual
    */
   return( pdepth[0].vids[0] );
}

Bool glxInitVisuals(int *nvisualp, VisualPtr *visualp,
			 VisualID *defaultVisp,
			 int ndepth, DepthPtr pdepth,
			 int rootDepth)
{
    int numRGBconfigs;
    int numCIconfigs;
    int numVisuals = *nvisualp;
    int numNewVisuals;
    int numNewConfigs;
    VisualPtr pVisual = *visualp;
    VisualPtr pVisualNew = NULL;
    VisualID *orig_vid = NULL;
    __GLXvisualConfig *glXVisualPtr = NULL;
    __GLXvisualConfig *pNewVisualConfigs = NULL;
    void **glXVisualPriv;
    dmxGlxVisualPrivate **pNewVisualPriv;
    int found_default;
    int i, j, k;
    int numGLXvis = 0;
    GLint *isGLXvis;

    if (numConfigs > 0)
        numNewConfigs = numConfigs;
    else
        return False;

    MAXSCREENSALLOC(__glXActiveScreens);
    if (!__glXActiveScreens)
        return False;

    /* Alloc space for the list of new GLX visuals */
    pNewVisualConfigs = (__GLXvisualConfig *)
                     __glXMalloc(numNewConfigs * sizeof(__GLXvisualConfig));
    if (!pNewVisualConfigs) {
	return FALSE;
    }

    /* Alloc space for the list of new GLX visual privates */
    pNewVisualPriv = (dmxGlxVisualPrivate **) __glXMalloc(numNewConfigs * sizeof(dmxGlxVisualPrivate *));
    if (!pNewVisualPriv) {
	__glXFree(pNewVisualConfigs);
	return FALSE;
    }

    /* copy driver's visual config info */
    for (i = 0; i < numConfigs; i++) {
       pNewVisualConfigs[i] = visualConfigs[i];
       pNewVisualPriv[i] = (dmxGlxVisualPrivate *)visualPrivates[i];
    }

#if 1
    /* FIXME: This is a hack to workaround a hang in xtest caused by a
     * mismatch between what the front end (i.e., DMX) server calculates
     * for the visual configs and what the back-end servers have.
     */
    {
	int numTCRGBconfigs = 0;
	int numDCRGBconfigs = 0;

	numRGBconfigs = 0;
	numCIconfigs = 0;

	for (i = 0; i < numNewConfigs; i++) {
	    if (pNewVisualConfigs[i].rgba) {
		if (pNewVisualConfigs[i].class == TrueColor)
		    numTCRGBconfigs++;
		else
		    numDCRGBconfigs++;
		numRGBconfigs++;
	    } else
		numCIconfigs++;
	}

	/* Count the total number of visuals to compute */
	numNewVisuals = 0;
	for (i = 0; i < numVisuals; i++) {
	    numNewVisuals +=
		(pVisual[i].class == TrueColor)   ? numTCRGBconfigs :
		(pVisual[i].class == DirectColor) ? numDCRGBconfigs :
						    numCIconfigs;
	}
    }
#else
    /* Count the number of RGB and CI visual configs */
    numRGBconfigs = 0;
    numCIconfigs = 0;
    for (i = 0; i < numNewConfigs; i++) {
	if (pNewVisualConfigs[i].rgba)
	    numRGBconfigs++;
	else
	    numCIconfigs++;
    }

    /* Count the total number of visuals to compute */
    numNewVisuals = 0;
    for (i = 0; i < numVisuals; i++) {
        numNewVisuals +=
	    (pVisual[i].class == TrueColor || pVisual[i].class == DirectColor)
	    ? numRGBconfigs : numCIconfigs;
    }
#endif

    /* Reset variables for use with the next screen/driver's visual configs */
    visualConfigs = NULL;
    numConfigs = 0;

    /* Alloc temp space for the list of orig VisualIDs for each new visual */
    orig_vid = (VisualID *)__glXMalloc(numNewVisuals * sizeof(VisualID));
    if (!orig_vid) {
	__glXFree(pNewVisualPriv);
	__glXFree(pNewVisualConfigs);
	return FALSE;
    }

    /* Alloc space for the list of glXVisuals */
    glXVisualPtr = (__GLXvisualConfig *)__glXMalloc(numNewVisuals *
						    sizeof(__GLXvisualConfig));
    if (!glXVisualPtr) {
	__glXFree(orig_vid);
	__glXFree(pNewVisualPriv);
	__glXFree(pNewVisualConfigs);
	return FALSE;
    }

    /* Alloc space for the list of glXVisualPrivates */
    glXVisualPriv = (void **)__glXMalloc(numNewVisuals * sizeof(void *));
    if (!glXVisualPriv) {
	__glXFree(glXVisualPtr);
	__glXFree(orig_vid);
	__glXFree(pNewVisualPriv);
	__glXFree(pNewVisualConfigs);
	return FALSE;
    }

    /* Alloc space for the new list of the X server's visuals */
    pVisualNew = (VisualPtr)__glXMalloc(numNewVisuals * sizeof(VisualRec));
    if (!pVisualNew) {
	__glXFree(glXVisualPriv);
	__glXFree(glXVisualPtr);
	__glXFree(orig_vid);
	__glXFree(pNewVisualPriv);
	__glXFree(pNewVisualConfigs);
	return FALSE;
    }

    isGLXvis = (GLint *) __glXMalloc(numNewVisuals * sizeof(GLint));
    if (!isGLXvis) {
	__glXFree(glXVisualPriv);
	__glXFree(glXVisualPtr);
	__glXFree(orig_vid);
	__glXFree(pNewVisualPriv);
	__glXFree(pNewVisualConfigs);
	__glXFree(pVisualNew);
	return FALSE;
    }

    /* Initialize the new visuals */
    found_default = FALSE;
    for (i = j = 0; i < numVisuals; i++) {

	for (k = 0; k < numNewConfigs; k++) {

	    int new_depth;
	    int depth;
	    int d,v;

	    /* find the depth of the new visual config */
	    new_depth = pNewVisualPriv[k]->x_visual_depth;

	    /* find the depth of the original visual */
	    depth = 0;
	    d = 0;
	    while( (depth==0) && (d < ndepth) ) {
	       v = 0;
	       while( (depth==0) && (v < pdepth[d].numVids) ) {
		  if (pdepth[d].vids[v] ==  pVisual[i].vid) {
		     depth = pdepth[d].depth;
		  }
		  v++;
	       }
	       d++;
	    }

	    /* check that the visual has the same class and depth 
	     * as the new config
             */
	    if ( pVisual[i].class != pNewVisualPriv[k]->x_visual_class ||
		  (depth != new_depth) )
		continue;

	    /* Initialize the new visual */
	    pVisualNew[j] = pVisual[i];
	    pVisualNew[j].vid = FakeClientID(0);

	    /* Check for the default visual */
	    if (!found_default && pVisual[i].vid == *defaultVisp) {
		*defaultVisp = pVisualNew[j].vid;
		found_default = TRUE;
	    }

	    /* Save the old VisualID */
	    orig_vid[j] = pVisual[i].vid;

	    /* Initialize the glXVisual */
	    glXVisualPtr[j] = pNewVisualConfigs[k];
	    glXVisualPtr[j].vid = pVisualNew[j].vid;

	    /*
	     * If the class is -1, then assume the X visual information
	     * is identical to what GLX needs, and take them from the X
	     * visual.  NOTE: if class != -1, then all other fields MUST
	     * be initialized.
	     */
	    if (glXVisualPtr[j].class == -1) {
		glXVisualPtr[j].class      = pVisual[i].class;
		glXVisualPtr[j].redSize    = count_bits(pVisual[i].redMask);
		glXVisualPtr[j].greenSize  = count_bits(pVisual[i].greenMask);
		glXVisualPtr[j].blueSize   = count_bits(pVisual[i].blueMask);
		glXVisualPtr[j].alphaSize  = glXVisualPtr[j].alphaSize;
		glXVisualPtr[j].redMask    = pVisual[i].redMask;
		glXVisualPtr[j].greenMask  = pVisual[i].greenMask;
		glXVisualPtr[j].blueMask   = pVisual[i].blueMask;
		glXVisualPtr[j].alphaMask  = glXVisualPtr[j].alphaMask;
		glXVisualPtr[j].bufferSize = rootDepth;
	    }

	    /* Save the device-dependent private for this visual */
	    glXVisualPriv[j] = pNewVisualPriv[k];

            isGLXvis[j] = glxMatchGLXVisualInConfigList( &glXVisualPtr[j], 
	                           dmxScreens[screenInfo.numScreens-1].glxVisuals,
	                           dmxScreens[screenInfo.numScreens-1].numGlxVisuals );
	    if (isGLXvis[j]) numGLXvis++;

	    j++;
	}
    }

    assert(j <= numNewVisuals);
    numNewVisuals = j;   /* correct number of new visuals */

    /* Save the GLX visuals in the screen structure */
    __glXActiveScreens[screenInfo.numScreens-1].numVisuals = numNewVisuals;
    __glXActiveScreens[screenInfo.numScreens-1].numGLXVisuals = numGLXvis;
    __glXActiveScreens[screenInfo.numScreens-1].isGLXvis = isGLXvis;
    __glXActiveScreens[screenInfo.numScreens-1].pGlxVisual = glXVisualPtr;


    /* Set up depth's VisualIDs */
    for (i = 0; i < ndepth; i++) {
	int numVids = 0;
	VisualID *pVids = NULL;
	int k, n = 0;

	/* Count the new number of VisualIDs at this depth */
	for (j = 0; j < pdepth[i].numVids; j++)
	    for (k = 0; k < numNewVisuals; k++)
		if (pdepth[i].vids[j] == orig_vid[k])
		    numVids++;

	/* Allocate a new list of VisualIDs for this depth */
	pVids = (VisualID *)__glXMalloc(numVids * sizeof(VisualID));

	/* Initialize the new list of VisualIDs for this depth */
	for (j = 0; j < pdepth[i].numVids; j++)
	    for (k = 0; k < numNewVisuals; k++)
		if (pdepth[i].vids[j] == orig_vid[k])
		    pVids[n++] = pVisualNew[k].vid;

	/* Update this depth's list of VisualIDs */
	__glXFree(pdepth[i].vids);
	pdepth[i].vids = pVids;
	pdepth[i].numVids = numVids;
    }

    /*
     * if the default visual was rejected - need to choose new
     * default visual !
     */ 
    if ( !found_default ) {

       for (i=0; i<numVisuals; i++)
	  if (pVisual[i].vid == *defaultVisp)
	     break;

       if (i < numVisuals) {
	  *defaultVisp = FindClosestVisual( &pVisual[i], rootDepth, pdepth, ndepth, pVisualNew, numNewVisuals );
       }
    }

    /* Update the X server's visuals */
    *nvisualp = numNewVisuals;
    *visualp = pVisualNew;

    /* Free the old list of the X server's visuals */
    __glXFree(pVisual);

    /* Clean up temporary allocations */
    __glXFree(orig_vid);
    __glXFree(pNewVisualPriv);
    __glXFree(pNewVisualConfigs);

    /* Free the private list created by DDX HW driver */
    if (visualPrivates)
        xfree(visualPrivates);
    visualPrivates = NULL;

    return TRUE;
}