-
Notifications
You must be signed in to change notification settings - Fork 1
/
glxext.c
1032 lines (920 loc) · 29.8 KB
/
glxext.c
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
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
/*
* SGI FREE SOFTWARE LICENSE B (Version 2.0, Sept. 18, 2008)
* Copyright (C) 1991-2000 Silicon Graphics, Inc. All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice including the dates of first publication and
* either this permission notice or a reference to
* http://oss.sgi.com/projects/FreeB/
* shall be included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* SILICON GRAPHICS, INC. BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
* OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*
* Except as contained in this notice, the name of Silicon Graphics, Inc.
* shall not be used in advertising or otherwise to promote the sale, use or
* other dealings in this Software without prior written authorization from
* Silicon Graphics, Inc.
*/
/**
* \file glxext.c
* GLX protocol interface boot-strap code.
*
* Direct rendering support added by Precision Insight, Inc.
*
* \author Kevin E. Martin <kevin@precisioninsight.com>
*/
#include <assert.h>
#include "glxclient.h"
#include <X11/extensions/Xext.h>
#include <X11/extensions/extutil.h>
#ifdef GLX_USE_APPLEGL
#include "apple_glx.h"
#include "apple_visual.h"
#else
#include "glapi.h"
#endif
#include "glxextensions.h"
#include "glcontextmodes.h"
#ifdef USE_XCB
#include <X11/Xlib-xcb.h>
#include <xcb/xcb.h>
#include <xcb/glx.h>
#endif
#ifdef DEBUG
void __glXDumpDrawBuffer(__GLXcontext * ctx);
#endif
/*
** You can set this cell to 1 to force the gl drawing stuff to be
** one command per packet
*/
_X_HIDDEN int __glXDebug = 0;
/* Extension required boiler plate */
static char *__glXExtensionName = GLX_EXTENSION_NAME;
#ifdef GLX_USE_APPLEGL
static XExtensionInfo __glXExtensionInfo_data;
XExtensionInfo *__glXExtensionInfo = &__glXExtensionInfo_data;
#else
XExtensionInfo *__glXExtensionInfo = NULL;
#endif
static /* const */ char *error_list[] = {
"GLXBadContext",
"GLXBadContextState",
"GLXBadDrawable",
"GLXBadPixmap",
"GLXBadContextTag",
"GLXBadCurrentWindow",
"GLXBadRenderRequest",
"GLXBadLargeRequest",
"GLXUnsupportedPrivateRequest",
"GLXBadFBConfig",
"GLXBadPbuffer",
"GLXBadCurrentDrawable",
"GLXBadWindow",
};
static int
__glXCloseDisplay(Display * dpy, XExtCodes * codes)
{
GLXContext gc;
gc = __glXGetCurrentContext();
if (dpy == gc->currentDpy) {
__glXSetCurrentContextNull();
__glXFreeContext(gc);
}
return XextRemoveDisplay(__glXExtensionInfo, dpy);
}
#ifdef GLX_USE_APPLEGL
static char *__glXErrorString(Display *dpy, int code, XExtCodes *codes,
char *buf, int n);
#endif
static
XEXT_GENERATE_ERROR_STRING(__glXErrorString, __glXExtensionName,
__GLX_NUMBER_ERRORS, error_list)
static /* const */ XExtensionHooks __glXExtensionHooks = {
NULL, /* create_gc */
NULL, /* copy_gc */
NULL, /* flush_gc */
NULL, /* free_gc */
NULL, /* create_font */
NULL, /* free_font */
__glXCloseDisplay, /* close_display */
NULL, /* wire_to_event */
NULL, /* event_to_wire */
NULL, /* error */
__glXErrorString, /* error_string */
};
#ifndef GLX_USE_APPLEGL
static
#endif
XEXT_GENERATE_FIND_DISPLAY(__glXFindDisplay, __glXExtensionInfo,
__glXExtensionName, &__glXExtensionHooks,
__GLX_NUMBER_EVENTS, NULL)
/************************************************************************/
/*
** Free the per screen configs data as well as the array of
** __glXScreenConfigs.
*/
static void
FreeScreenConfigs(__GLXdisplayPrivate * priv)
{
__GLXscreenConfigs *psc;
GLint i, screens;
/* Free screen configuration information */
psc = priv->screenConfigs;
screens = ScreenCount(priv->dpy);
for (i = 0; i < screens; i++, psc++) {
if (psc->configs) {
_gl_context_modes_destroy(psc->configs);
if (psc->effectiveGLXexts)
Xfree(psc->effectiveGLXexts);
psc->configs = NULL; /* NOTE: just for paranoia */
}
if (psc->visuals) {
_gl_context_modes_destroy(psc->visuals);
psc->visuals = NULL; /* NOTE: just for paranoia */
}
Xfree((char *) psc->serverGLXexts);
#ifdef GLX_DIRECT_RENDERING
if (psc->driver_configs) {
unsigned int j;
for (j = 0; psc->driver_configs[j]; j++)
free((__DRIconfig *) psc->driver_configs[j]);
free(psc->driver_configs);
psc->driver_configs = NULL;
}
if (psc->driScreen) {
psc->driScreen->destroyScreen(psc);
__glxHashDestroy(psc->drawHash);
XFree(psc->driScreen);
psc->driScreen = NULL;
}
#endif
}
XFree((char *) priv->screenConfigs);
priv->screenConfigs = NULL;
}
/*
** Release the private memory referred to in a display private
** structure. The caller will free the extension structure.
*/
static int
__glXFreeDisplayPrivate(XExtData * extension)
{
__GLXdisplayPrivate *priv;
priv = (__GLXdisplayPrivate *) extension->private_data;
FreeScreenConfigs(priv);
if (priv->serverGLXvendor) {
Xfree((char *) priv->serverGLXvendor);
priv->serverGLXvendor = 0x0; /* to protect against double free's */
}
if (priv->serverGLXversion) {
Xfree((char *) priv->serverGLXversion);
priv->serverGLXversion = 0x0; /* to protect against double free's */
}
#ifdef GLX_DIRECT_RENDERING
/* Free the direct rendering per display data */
if (priv->driswDisplay)
(*priv->driswDisplay->destroyDisplay) (priv->driswDisplay);
priv->driswDisplay = NULL;
if (priv->driDisplay)
(*priv->driDisplay->destroyDisplay) (priv->driDisplay);
priv->driDisplay = NULL;
if (priv->dri2Display)
(*priv->dri2Display->destroyDisplay) (priv->dri2Display);
priv->dri2Display = NULL;
#endif
Xfree((char *) priv);
return 0;
}
/************************************************************************/
/*
** Query the version of the GLX extension. This procedure works even if
** the client extension is not completely set up.
*/
static Bool
QueryVersion(Display * dpy, int opcode, int *major, int *minor)
{
#ifdef USE_XCB
xcb_connection_t *c = XGetXCBConnection(dpy);
xcb_glx_query_version_reply_t *reply = xcb_glx_query_version_reply(c,
xcb_glx_query_version
(c,
GLX_MAJOR_VERSION,
GLX_MINOR_VERSION),
NULL);
if (reply->major_version != GLX_MAJOR_VERSION) {
free(reply);
return GL_FALSE;
}
*major = reply->major_version;
*minor = min(reply->minor_version, GLX_MINOR_VERSION);
free(reply);
return GL_TRUE;
#else
xGLXQueryVersionReq *req;
xGLXQueryVersionReply reply;
/* Send the glXQueryVersion request */
LockDisplay(dpy);
GetReq(GLXQueryVersion, req);
req->reqType = opcode;
req->glxCode = X_GLXQueryVersion;
req->majorVersion = GLX_MAJOR_VERSION;
req->minorVersion = GLX_MINOR_VERSION;
_XReply(dpy, (xReply *) & reply, 0, False);
UnlockDisplay(dpy);
SyncHandle();
if (reply.majorVersion != GLX_MAJOR_VERSION) {
/*
** The server does not support the same major release as this
** client.
*/
return GL_FALSE;
}
*major = reply.majorVersion;
*minor = min(reply.minorVersion, GLX_MINOR_VERSION);
return GL_TRUE;
#endif /* USE_XCB */
}
/*
* We don't want to enable this GLX_OML_swap_method in glxext.h,
* because we can't support it. The X server writes it out though,
* so we should handle it somehow, to avoid false warnings.
*/
enum {
IGNORE_GLX_SWAP_METHOD_OML = 0x8060
};
/*
* getVisualConfigs uses the !tagged_only path.
* getFBConfigs uses the tagged_only path.
*/
_X_HIDDEN void
__glXInitializeVisualConfigFromTags(__GLcontextModes * config, int count,
const INT32 * bp, Bool tagged_only,
Bool fbconfig_style_tags)
{
int i;
if (!tagged_only) {
/* Copy in the first set of properties */
config->visualID = *bp++;
config->visualType = _gl_convert_from_x_visual_type(*bp++);
config->rgbMode = *bp++;
config->redBits = *bp++;
config->greenBits = *bp++;
config->blueBits = *bp++;
config->alphaBits = *bp++;
config->accumRedBits = *bp++;
config->accumGreenBits = *bp++;
config->accumBlueBits = *bp++;
config->accumAlphaBits = *bp++;
config->doubleBufferMode = *bp++;
config->stereoMode = *bp++;
config->rgbBits = *bp++;
config->depthBits = *bp++;
config->stencilBits = *bp++;
config->numAuxBuffers = *bp++;
config->level = *bp++;
#ifdef GLX_USE_APPLEGL
/* AppleSGLX supports pixmap and pbuffers with all config. */
config->drawableType = GLX_WINDOW_BIT | GLX_PIXMAP_BIT | GLX_PBUFFER_BIT;
/* Unfortunately this can create an ABI compatibility problem. */
count -= 18;
#else
count -= __GLX_MIN_CONFIG_PROPS;
#endif
}
/*
** Additional properties may be in a list at the end
** of the reply. They are in pairs of property type
** and property value.
*/
#define FETCH_OR_SET(tag) \
config-> tag = ( fbconfig_style_tags ) ? *bp++ : 1
for (i = 0; i < count; i += 2) {
long int tag = *bp++;
switch (tag) {
case GLX_RGBA:
FETCH_OR_SET(rgbMode);
break;
case GLX_BUFFER_SIZE:
config->rgbBits = *bp++;
break;
case GLX_LEVEL:
config->level = *bp++;
break;
case GLX_DOUBLEBUFFER:
FETCH_OR_SET(doubleBufferMode);
break;
case GLX_STEREO:
FETCH_OR_SET(stereoMode);
break;
case GLX_AUX_BUFFERS:
config->numAuxBuffers = *bp++;
break;
case GLX_RED_SIZE:
config->redBits = *bp++;
break;
case GLX_GREEN_SIZE:
config->greenBits = *bp++;
break;
case GLX_BLUE_SIZE:
config->blueBits = *bp++;
break;
case GLX_ALPHA_SIZE:
config->alphaBits = *bp++;
break;
case GLX_DEPTH_SIZE:
config->depthBits = *bp++;
break;
case GLX_STENCIL_SIZE:
config->stencilBits = *bp++;
break;
case GLX_ACCUM_RED_SIZE:
config->accumRedBits = *bp++;
break;
case GLX_ACCUM_GREEN_SIZE:
config->accumGreenBits = *bp++;
break;
case GLX_ACCUM_BLUE_SIZE:
config->accumBlueBits = *bp++;
break;
case GLX_ACCUM_ALPHA_SIZE:
config->accumAlphaBits = *bp++;
break;
case GLX_VISUAL_CAVEAT_EXT:
config->visualRating = *bp++;
break;
case GLX_X_VISUAL_TYPE:
config->visualType = *bp++;
break;
case GLX_TRANSPARENT_TYPE:
config->transparentPixel = *bp++;
break;
case GLX_TRANSPARENT_INDEX_VALUE:
config->transparentIndex = *bp++;
break;
case GLX_TRANSPARENT_RED_VALUE:
config->transparentRed = *bp++;
break;
case GLX_TRANSPARENT_GREEN_VALUE:
config->transparentGreen = *bp++;
break;
case GLX_TRANSPARENT_BLUE_VALUE:
config->transparentBlue = *bp++;
break;
case GLX_TRANSPARENT_ALPHA_VALUE:
config->transparentAlpha = *bp++;
break;
case GLX_VISUAL_ID:
config->visualID = *bp++;
break;
case GLX_DRAWABLE_TYPE:
config->drawableType = *bp++;
#ifdef GLX_USE_APPLEGL
/* AppleSGLX supports pixmap and pbuffers with all config. */
config->drawableType |= GLX_WINDOW_BIT | GLX_PIXMAP_BIT | GLX_PBUFFER_BIT;
#endif
break;
case GLX_RENDER_TYPE:
config->renderType = *bp++;
break;
case GLX_X_RENDERABLE:
config->xRenderable = *bp++;
break;
case GLX_FBCONFIG_ID:
config->fbconfigID = *bp++;
break;
case GLX_MAX_PBUFFER_WIDTH:
config->maxPbufferWidth = *bp++;
break;
case GLX_MAX_PBUFFER_HEIGHT:
config->maxPbufferHeight = *bp++;
break;
case GLX_MAX_PBUFFER_PIXELS:
config->maxPbufferPixels = *bp++;
break;
#ifndef GLX_USE_APPLEGL
case GLX_OPTIMAL_PBUFFER_WIDTH_SGIX:
config->optimalPbufferWidth = *bp++;
break;
case GLX_OPTIMAL_PBUFFER_HEIGHT_SGIX:
config->optimalPbufferHeight = *bp++;
break;
case GLX_VISUAL_SELECT_GROUP_SGIX:
config->visualSelectGroup = *bp++;
break;
case GLX_SWAP_METHOD_OML:
config->swapMethod = *bp++;
break;
#endif
case GLX_SAMPLE_BUFFERS_SGIS:
config->sampleBuffers = *bp++;
break;
case GLX_SAMPLES_SGIS:
config->samples = *bp++;
break;
#ifdef GLX_USE_APPLEGL
case IGNORE_GLX_SWAP_METHOD_OML:
/* We ignore this tag. See the comment above this function. */
++bp;
break;
#else
case GLX_BIND_TO_TEXTURE_RGB_EXT:
config->bindToTextureRgb = *bp++;
break;
case GLX_BIND_TO_TEXTURE_RGBA_EXT:
config->bindToTextureRgba = *bp++;
break;
case GLX_BIND_TO_MIPMAP_TEXTURE_EXT:
config->bindToMipmapTexture = *bp++;
break;
case GLX_BIND_TO_TEXTURE_TARGETS_EXT:
config->bindToTextureTargets = *bp++;
break;
case GLX_Y_INVERTED_EXT:
config->yInverted = *bp++;
break;
#endif
case None:
i = count;
break;
default:
if(getenv("LIBGL_DIAGNOSTIC")) {
long int tagvalue = *bp++;
fprintf(stderr, "WARNING: unknown GLX tag from server: "
"tag 0x%lx value 0x%lx\n", tag, tagvalue);
}
break;
}
}
config->renderType =
(config->rgbMode) ? GLX_RGBA_BIT : GLX_COLOR_INDEX_BIT;
config->haveAccumBuffer = ((config->accumRedBits +
config->accumGreenBits +
config->accumBlueBits +
config->accumAlphaBits) > 0);
config->haveDepthBuffer = (config->depthBits > 0);
config->haveStencilBuffer = (config->stencilBits > 0);
}
static __GLcontextModes *
createConfigsFromProperties(Display * dpy, int nvisuals, int nprops,
int screen, GLboolean tagged_only)
{
INT32 buf[__GLX_TOTAL_CONFIG], *props;
unsigned prop_size;
__GLcontextModes *modes, *m;
int i;
if (nprops == 0)
return NULL;
/* FIXME: Is the __GLX_MIN_CONFIG_PROPS test correct for FBconfigs? */
/* Check number of properties */
if (nprops < __GLX_MIN_CONFIG_PROPS || nprops > __GLX_MAX_CONFIG_PROPS)
return NULL;
/* Allocate memory for our config structure */
modes = _gl_context_modes_create(nvisuals, sizeof(__GLcontextModes));
if (!modes)
return NULL;
prop_size = nprops * __GLX_SIZE_INT32;
if (prop_size <= sizeof(buf))
props = buf;
else
props = Xmalloc(prop_size);
/* Read each config structure and convert it into our format */
m = modes;
for (i = 0; i < nvisuals; i++) {
_XRead(dpy, (char *) props, prop_size);
#ifdef GLX_USE_APPLEGL
/* Older X servers don't send this so we default it here. */
m->drawableType = GLX_WINDOW_BIT;
#else
/*
* The XQuartz 2.3.2.1 X server doesn't set this properly, so
* set the proper bits here.
* AppleSGLX supports windows, pixmaps, and pbuffers with all config.
*/
m->drawableType = GLX_WINDOW_BIT | GLX_PIXMAP_BIT | GLX_PBUFFER_BIT;
#endif
__glXInitializeVisualConfigFromTags(m, nprops, props,
tagged_only, GL_TRUE);
m->screen = screen;
m = m->next;
}
if (props != buf)
Xfree(props);
return modes;
}
static GLboolean
getVisualConfigs(Display * dpy, __GLXdisplayPrivate * priv, int screen)
{
xGLXGetVisualConfigsReq *req;
__GLXscreenConfigs *psc;
xGLXGetVisualConfigsReply reply;
LockDisplay(dpy);
psc = priv->screenConfigs + screen;
psc->visuals = NULL;
GetReq(GLXGetVisualConfigs, req);
req->reqType = priv->majorOpcode;
req->glxCode = X_GLXGetVisualConfigs;
req->screen = screen;
if (!_XReply(dpy, (xReply *) & reply, 0, False))
goto out;
psc->visuals = createConfigsFromProperties(dpy,
reply.numVisuals,
reply.numProps,
screen, GL_FALSE);
out:
UnlockDisplay(dpy);
return psc->visuals != NULL;
}
static GLboolean
getFBConfigs(Display * dpy, __GLXdisplayPrivate * priv, int screen)
{
xGLXGetFBConfigsReq *fb_req;
xGLXGetFBConfigsSGIXReq *sgi_req;
xGLXVendorPrivateWithReplyReq *vpreq;
xGLXGetFBConfigsReply reply;
__GLXscreenConfigs *psc;
psc = priv->screenConfigs + screen;
psc->serverGLXexts =
__glXQueryServerString(dpy, priv->majorOpcode, screen, GLX_EXTENSIONS);
LockDisplay(dpy);
psc->configs = NULL;
if (atof(priv->serverGLXversion) >= 1.3) {
GetReq(GLXGetFBConfigs, fb_req);
fb_req->reqType = priv->majorOpcode;
fb_req->glxCode = X_GLXGetFBConfigs;
fb_req->screen = screen;
}
else if (strstr(psc->serverGLXexts, "GLX_SGIX_fbconfig") != NULL) {
GetReqExtra(GLXVendorPrivateWithReply,
sz_xGLXGetFBConfigsSGIXReq +
sz_xGLXVendorPrivateWithReplyReq, vpreq);
sgi_req = (xGLXGetFBConfigsSGIXReq *) vpreq;
sgi_req->reqType = priv->majorOpcode;
sgi_req->glxCode = X_GLXVendorPrivateWithReply;
sgi_req->vendorCode = X_GLXvop_GetFBConfigsSGIX;
sgi_req->screen = screen;
}
else
goto out;
if (!_XReply(dpy, (xReply *) & reply, 0, False))
goto out;
psc->configs = createConfigsFromProperties(dpy,
reply.numFBConfigs,
reply.numAttribs * 2,
screen, GL_TRUE);
out:
UnlockDisplay(dpy);
return psc->configs != NULL;
}
/*
** Allocate the memory for the per screen configs for each screen.
** If that works then fetch the per screen configs data.
*/
static Bool
AllocAndFetchScreenConfigs(Display * dpy, __GLXdisplayPrivate * priv)
{
__GLXscreenConfigs *psc;
GLint i, screens;
/*
** First allocate memory for the array of per screen configs.
*/
screens = ScreenCount(dpy);
psc = (__GLXscreenConfigs *) Xmalloc(screens * sizeof(__GLXscreenConfigs));
if (!psc) {
return GL_FALSE;
}
memset(psc, 0, screens * sizeof(__GLXscreenConfigs));
priv->screenConfigs = psc;
priv->serverGLXversion =
__glXQueryServerString(dpy, priv->majorOpcode, 0, GLX_VERSION);
if (priv->serverGLXversion == NULL) {
FreeScreenConfigs(priv);
return GL_FALSE;
}
for (i = 0; i < screens; i++, psc++) {
getVisualConfigs(dpy, priv, i);
getFBConfigs(dpy, priv, i);
#ifdef GLX_DIRECT_RENDERING
psc->scr = i;
psc->dpy = dpy;
psc->drawHash = __glxHashCreate();
if (psc->drawHash == NULL)
continue;
if (priv->dri2Display)
psc->driScreen = (*priv->dri2Display->createScreen) (psc, i, priv);
if (psc->driScreen == NULL && priv->driDisplay)
psc->driScreen = (*priv->driDisplay->createScreen) (psc, i, priv);
if (psc->driScreen == NULL && priv->driswDisplay)
psc->driScreen = (*priv->driswDisplay->createScreen) (psc, i, priv);
if (psc->driScreen == NULL) {
__glxHashDestroy(psc->drawHash);
psc->drawHash = NULL;
}
#endif
}
SyncHandle();
return GL_TRUE;
}
/*
** Initialize the client side extension code.
*/
_X_HIDDEN __GLXdisplayPrivate *
__glXInitialize(Display * dpy)
{
XExtDisplayInfo *info = __glXFindDisplay(dpy);
XExtData **privList, *private, *found;
__GLXdisplayPrivate *dpyPriv;
XEDataObject dataObj;
int major, minor;
#ifdef GLX_DIRECT_RENDERING
Bool glx_direct, glx_accel;
#endif
/* The one and only long long lock */
__glXLock();
if (!XextHasExtension(info)) {
/* No GLX extension supported by this server. Oh well. */
__glXUnlock();
XMissingExtension(dpy, __glXExtensionName);
return 0;
}
/* See if a display private already exists. If so, return it */
dataObj.display = dpy;
privList = XEHeadOfExtensionList(dataObj);
found = XFindOnExtensionList(privList, info->codes->extension);
if (found) {
__glXUnlock();
return (__GLXdisplayPrivate *) found->private_data;
}
/* See if the versions are compatible */
if (!QueryVersion(dpy, info->codes->major_opcode, &major, &minor)) {
/* The client and server do not agree on versions. Punt. */
__glXUnlock();
return 0;
}
/*
** Allocate memory for all the pieces needed for this buffer.
*/
private = (XExtData *) Xmalloc(sizeof(XExtData));
if (!private) {
__glXUnlock();
return 0;
}
dpyPriv = (__GLXdisplayPrivate *) Xcalloc(1, sizeof(__GLXdisplayPrivate));
if (!dpyPriv) {
__glXUnlock();
Xfree((char *) private);
return 0;
}
/*
** Init the display private and then read in the screen config
** structures from the server.
*/
dpyPriv->majorOpcode = info->codes->major_opcode;
dpyPriv->majorVersion = major;
dpyPriv->minorVersion = minor;
dpyPriv->dpy = dpy;
dpyPriv->serverGLXvendor = 0x0;
dpyPriv->serverGLXversion = 0x0;
#ifdef GLX_DIRECT_RENDERING
glx_direct = (getenv("LIBGL_ALWAYS_INDIRECT") == NULL);
glx_accel = (getenv("LIBGL_ALWAYS_SOFTWARE") == NULL);
/*
** Initialize the direct rendering per display data and functions.
** Note: This _must_ be done before calling any other DRI routines
** (e.g., those called in AllocAndFetchScreenConfigs).
*/
if (glx_direct && glx_accel) {
dpyPriv->dri2Display = dri2CreateDisplay(dpy);
dpyPriv->driDisplay = driCreateDisplay(dpy);
}
if (glx_direct)
dpyPriv->driswDisplay = driswCreateDisplay(dpy);
#endif
#ifdef GLX_USE_APPLEGL
if (apple_init_glx(dpy) || !AllocAndFetchScreenConfigs(dpy, dpyPriv)) {
#else
if (!AllocAndFetchScreenConfigs(dpy, dpyPriv)) {
#endif
__glXUnlock();
Xfree((char *) dpyPriv);
Xfree((char *) private);
return 0;
}
/*
** Fill in the private structure. This is the actual structure that
** hangs off of the Display structure. Our private structure is
** referred to by this structure. Got that?
*/
private->number = info->codes->extension;
private->next = 0;
private->free_private = __glXFreeDisplayPrivate;
private->private_data = (char *) dpyPriv;
XAddToExtensionList(privList, private);
if (dpyPriv->majorVersion == 1 && dpyPriv->minorVersion >= 1) {
__glXClientInfo(dpy, dpyPriv->majorOpcode);
}
__glXUnlock();
return dpyPriv;
}
/*
** Setup for sending a GLX command on dpy. Make sure the extension is
** initialized. Try to avoid calling __glXInitialize as its kinda slow.
*/
_X_HIDDEN CARD8
__glXSetupForCommand(Display * dpy)
{
GLXContext gc;
__GLXdisplayPrivate *priv;
/* If this thread has a current context, flush its rendering commands */
gc = __glXGetCurrentContext();
if (gc->currentDpy) {
/* Flush rendering buffer of the current context, if any */
(void) __glXFlushRenderBuffer(gc, gc->pc);
if (gc->currentDpy == dpy) {
/* Use opcode from gc because its right */
return gc->majorOpcode;
}
else {
/*
** Have to get info about argument dpy because it might be to
** a different server
*/
}
}
/* Forced to lookup extension via the slow initialize route */
priv = __glXInitialize(dpy);
if (!priv) {
return 0;
}
return priv->majorOpcode;
}
/**
* Flush the drawing command transport buffer.
*
* \param ctx Context whose transport buffer is to be flushed.
* \param pc Pointer to first unused buffer location.
*
* \todo
* Modify this function to use \c ctx->pc instead of the explicit
* \c pc parameter.
*/
_X_HIDDEN GLubyte *
__glXFlushRenderBuffer(__GLXcontext * ctx, GLubyte * pc)
{
Display *const dpy = ctx->currentDpy;
#ifdef USE_XCB
xcb_connection_t *c = XGetXCBConnection(dpy);
#else
xGLXRenderReq *req;
#endif /* USE_XCB */
const GLint size = pc - ctx->buf;
if ((dpy != NULL) && (size > 0)) {
#ifdef USE_XCB
xcb_glx_render(c, ctx->currentContextTag, size,
(const uint8_t *) ctx->buf);
#else
/* Send the entire buffer as an X request */
LockDisplay(dpy);
GetReq(GLXRender, req);
req->reqType = ctx->majorOpcode;
req->glxCode = X_GLXRender;
req->contextTag = ctx->currentContextTag;
req->length += (size + 3) >> 2;
_XSend(dpy, (char *) ctx->buf, size);
UnlockDisplay(dpy);
SyncHandle();
#endif
}
/* Reset pointer and return it */
ctx->pc = ctx->buf;
return ctx->pc;
}
/**
* Send a portion of a GLXRenderLarge command to the server. The advantage of
* this function over \c __glXSendLargeCommand is that callers can use the
* data buffer in the GLX context and may be able to avoid allocating an
* extra buffer. The disadvantage is the clients will have to do more
* GLX protocol work (i.e., calculating \c totalRequests, etc.).
*
* \sa __glXSendLargeCommand
*
* \param gc GLX context
* \param requestNumber Which part of the whole command is this? The first
* request is 1.
* \param totalRequests How many requests will there be?
* \param data Command data.
* \param dataLen Size, in bytes, of the command data.
*/
_X_HIDDEN void
__glXSendLargeChunk(__GLXcontext * gc, GLint requestNumber,
GLint totalRequests, const GLvoid * data, GLint dataLen)
{
Display *dpy = gc->currentDpy;
#ifdef USE_XCB
xcb_connection_t *c = XGetXCBConnection(dpy);
xcb_glx_render_large(c, gc->currentContextTag, requestNumber,
totalRequests, dataLen, data);
#else
xGLXRenderLargeReq *req;
if (requestNumber == 1) {
LockDisplay(dpy);
}
GetReq(GLXRenderLarge, req);
req->reqType = gc->majorOpcode;
req->glxCode = X_GLXRenderLarge;
req->contextTag = gc->currentContextTag;
req->length += (dataLen + 3) >> 2;
req->requestNumber = requestNumber;
req->requestTotal = totalRequests;
req->dataBytes = dataLen;
Data(dpy, data, dataLen);
if (requestNumber == totalRequests) {
UnlockDisplay(dpy);
SyncHandle();
}
#endif /* USE_XCB */
}
/**
* Send a command that is too large for the GLXRender protocol request.
*
* Send a large command, one that is too large for some reason to
* send using the GLXRender protocol request. One reason to send
* a large command is to avoid copying the data.
*
* \param ctx GLX context
* \param header Header data.
* \param headerLen Size, in bytes, of the header data. It is assumed that
* the header data will always be small enough to fit in
* a single X protocol packet.
* \param data Command data.
* \param dataLen Size, in bytes, of the command data.
*/
_X_HIDDEN void
__glXSendLargeCommand(__GLXcontext * ctx,
const GLvoid * header, GLint headerLen,
const GLvoid * data, GLint dataLen)
{
GLint maxSize;
GLint totalRequests, requestNumber;
/*
** Calculate the maximum amount of data can be stuffed into a single
** packet. sz_xGLXRenderReq is added because bufSize is the maximum
** packet size minus sz_xGLXRenderReq.
*/
maxSize = (ctx->bufSize + sz_xGLXRenderReq) - sz_xGLXRenderLargeReq;
totalRequests = 1 + (dataLen / maxSize);
if (dataLen % maxSize)
totalRequests++;
/*
** Send all of the command, except the large array, as one request.
*/
assert(headerLen <= maxSize);
__glXSendLargeChunk(ctx, 1, totalRequests, header, headerLen);
/*
** Send enough requests until the whole array is sent.
*/
for (requestNumber = 2; requestNumber <= (totalRequests - 1);
requestNumber++) {
__glXSendLargeChunk(ctx, requestNumber, totalRequests, data, maxSize);
data = (const GLvoid *) (((const GLubyte *) data) + maxSize);
dataLen -= maxSize;
assert(dataLen > 0);