forked from notaz/mesa
-
Notifications
You must be signed in to change notification settings - Fork 0
/
Copy pathdri2_glx.c
1304 lines (1069 loc) · 39.2 KB
/
dri2_glx.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
/*
* Copyright © 2008 Red Hat, Inc.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Soft-
* ware"), to deal in the Software without restriction, including without
* limitation the rights to use, copy, modify, merge, publish, distribute,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, provided that the above copyright
* notice(s) and this permission notice appear in all copies of the Soft-
* ware and that both the above copyright notice(s) and this permission
* notice appear in supporting documentation.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABIL-
* ITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY
* RIGHTS. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR HOLDERS INCLUDED IN
* THIS NOTICE BE LIABLE FOR ANY CLAIM, OR ANY SPECIAL INDIRECT OR CONSE-
* QUENTIAL DAMAGES, OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
* DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFOR-
* MANCE OF THIS SOFTWARE.
*
* Except as contained in this notice, the name of a copyright holder shall
* not be used in advertising or otherwise to promote the sale, use or
* other dealings in this Software without prior written authorization of
* the copyright holder.
*
* Authors:
* Kristian Høgsberg ([email protected])
*/
#if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
#include <X11/Xlib.h>
#include <X11/extensions/Xfixes.h>
#include <X11/Xlib-xcb.h>
#include <xcb/xcb.h>
#include <xcb/dri2.h>
#include "glxclient.h"
#include <X11/extensions/dri2proto.h>
#include <dlfcn.h>
#include <fcntl.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/mman.h>
#include <sys/time.h>
#include "dri2.h"
#include "dri_common.h"
#include "dri2_priv.h"
#include "loader.h"
#include "loader_dri_helper.h"
#undef DRI2_MINOR
#define DRI2_MINOR 1
struct dri2_display
{
__GLXDRIdisplay base;
__glxHashTable *dri2Hash;
const __DRIextension *loader_extensions[5];
};
struct dri2_drawable
{
__GLXDRIdrawable base;
__DRIdrawable *driDrawable;
__DRIbuffer buffers[5];
int bufferCount;
int width, height;
int have_back;
int have_fake_front;
int swap_interval;
uint64_t previous_time;
unsigned frames;
};
static const struct glx_context_vtable dri2_context_vtable;
/* For XCB's handling of ust/msc/sbc counters, we have to hand it the high and
* low halves separately. This helps you split them.
*/
static void
split_counter(uint64_t counter, uint32_t *hi, uint32_t *lo)
{
*hi = (counter >> 32);
*lo = counter & 0xffffffff;
}
static uint64_t
merge_counter(uint32_t hi, uint32_t lo)
{
return ((uint64_t)hi << 32) | lo;
}
static void
dri2_destroy_context(struct glx_context *context)
{
struct dri2_screen *psc = (struct dri2_screen *) context->psc;
driReleaseDrawables(context);
free((char *) context->extensions);
(*psc->core->destroyContext) (context->driContext);
free(context);
}
static Bool
dri2_bind_context(struct glx_context *context, struct glx_context *old,
GLXDrawable draw, GLXDrawable read)
{
struct dri2_screen *psc = (struct dri2_screen *) context->psc;
struct dri2_drawable *pdraw, *pread;
__DRIdrawable *dri_draw = NULL, *dri_read = NULL;
pdraw = (struct dri2_drawable *) driFetchDrawable(context, draw);
pread = (struct dri2_drawable *) driFetchDrawable(context, read);
driReleaseDrawables(old);
if (pdraw)
dri_draw = pdraw->driDrawable;
else if (draw != None)
return GLXBadDrawable;
if (pread)
dri_read = pread->driDrawable;
else if (read != None)
return GLXBadDrawable;
if (!(*psc->core->bindContext) (context->driContext, dri_draw, dri_read))
return GLXBadContext;
return Success;
}
static void
dri2_unbind_context(struct glx_context *context, struct glx_context *new)
{
struct dri2_screen *psc = (struct dri2_screen *) context->psc;
(*psc->core->unbindContext) (context->driContext);
}
static struct glx_context *
dri2_create_context_attribs(struct glx_screen *base,
struct glx_config *config_base,
struct glx_context *shareList,
unsigned num_attribs,
const uint32_t *attribs,
unsigned *error)
{
struct glx_context *pcp = NULL;
struct dri2_screen *psc = (struct dri2_screen *) base;
__GLXDRIconfigPrivate *config = (__GLXDRIconfigPrivate *) config_base;
__DRIcontext *shared = NULL;
struct dri_ctx_attribs dca;
uint32_t ctx_attribs[2 * 6];
unsigned num_ctx_attribs = 0;
*error = dri_convert_glx_attribs(num_attribs, attribs, &dca);
if (*error != __DRI_CTX_ERROR_SUCCESS)
goto error_exit;
/* Check the renderType value */
if (!validate_renderType_against_config(config_base, dca.render_type))
goto error_exit;
if (shareList) {
/* We can't share with an indirect context */
if (!shareList->isDirect)
return NULL;
/* The GLX_ARB_create_context_no_error specs say:
*
* BadMatch is generated if the value of GLX_CONTEXT_OPENGL_NO_ERROR_ARB
* used to create <share_context> does not match the value of
* GLX_CONTEXT_OPENGL_NO_ERROR_ARB for the context being created.
*/
if (!!shareList->noError != !!dca.no_error) {
*error = __DRI_CTX_ERROR_BAD_FLAG;
return NULL;
}
shared = shareList->driContext;
}
pcp = calloc(1, sizeof *pcp);
if (pcp == NULL) {
*error = __DRI_CTX_ERROR_NO_MEMORY;
goto error_exit;
}
if (!glx_context_init(pcp, &psc->base, config_base))
goto error_exit;
ctx_attribs[num_ctx_attribs++] = __DRI_CTX_ATTRIB_MAJOR_VERSION;
ctx_attribs[num_ctx_attribs++] = dca.major_ver;
ctx_attribs[num_ctx_attribs++] = __DRI_CTX_ATTRIB_MINOR_VERSION;
ctx_attribs[num_ctx_attribs++] = dca.minor_ver;
/* Only send a value when the non-default value is requested. By doing
* this we don't have to check the driver's DRI2 version before sending the
* default value.
*/
if (dca.reset != __DRI_CTX_RESET_NO_NOTIFICATION) {
ctx_attribs[num_ctx_attribs++] = __DRI_CTX_ATTRIB_RESET_STRATEGY;
ctx_attribs[num_ctx_attribs++] = dca.reset;
}
if (dca.release != __DRI_CTX_RELEASE_BEHAVIOR_FLUSH) {
ctx_attribs[num_ctx_attribs++] = __DRI_CTX_ATTRIB_RELEASE_BEHAVIOR;
ctx_attribs[num_ctx_attribs++] = dca.release;
}
if (dca.no_error) {
ctx_attribs[num_ctx_attribs++] = __DRI_CTX_ATTRIB_NO_ERROR;
ctx_attribs[num_ctx_attribs++] = dca.no_error;
pcp->noError = GL_TRUE;
}
if (dca.flags != 0) {
ctx_attribs[num_ctx_attribs++] = __DRI_CTX_ATTRIB_FLAGS;
ctx_attribs[num_ctx_attribs++] = dca.flags;
}
/* The renderType is retrieved from attribs, or set to default
* of GLX_RGBA_TYPE.
*/
pcp->renderType = dca.render_type;
pcp->driContext =
(*psc->dri2->createContextAttribs) (psc->driScreen,
dca.api,
config ? config->driConfig : NULL,
shared,
num_ctx_attribs / 2,
ctx_attribs,
error,
pcp);
if (pcp->driContext == NULL)
goto error_exit;
pcp->vtable = base->context_vtable;
return pcp;
error_exit:
free(pcp);
return NULL;
}
static void
dri2DestroyDrawable(__GLXDRIdrawable *base)
{
struct dri2_screen *psc = (struct dri2_screen *) base->psc;
struct dri2_drawable *pdraw = (struct dri2_drawable *) base;
struct glx_display *dpyPriv = psc->base.display;
struct dri2_display *pdp = (struct dri2_display *)dpyPriv->dri2Display;
__glxHashDelete(pdp->dri2Hash, pdraw->base.xDrawable);
(*psc->core->destroyDrawable) (pdraw->driDrawable);
/* If it's a GLX 1.3 drawables, we can destroy the DRI2 drawable
* now, as the application explicitly asked to destroy the GLX
* drawable. Otherwise, for legacy drawables, we let the DRI2
* drawable linger on the server, since there's no good way of
* knowing when the application is done with it. The server will
* destroy the DRI2 drawable when it destroys the X drawable or the
* client exits anyway. */
if (pdraw->base.xDrawable != pdraw->base.drawable)
DRI2DestroyDrawable(psc->base.dpy, pdraw->base.xDrawable);
free(pdraw);
}
static __GLXDRIdrawable *
dri2CreateDrawable(struct glx_screen *base, XID xDrawable,
GLXDrawable drawable, int type,
struct glx_config *config_base)
{
struct dri2_drawable *pdraw;
struct dri2_screen *psc = (struct dri2_screen *) base;
__GLXDRIconfigPrivate *config = (__GLXDRIconfigPrivate *) config_base;
struct glx_display *dpyPriv;
struct dri2_display *pdp;
dpyPriv = __glXInitialize(psc->base.dpy);
if (dpyPriv == NULL)
return NULL;
pdraw = calloc(1, sizeof(*pdraw));
if (!pdraw)
return NULL;
pdraw->base.destroyDrawable = dri2DestroyDrawable;
pdraw->base.xDrawable = xDrawable;
pdraw->base.drawable = drawable;
pdraw->base.psc = &psc->base;
pdraw->bufferCount = 0;
pdraw->swap_interval = dri_get_initial_swap_interval(psc->driScreen, psc->config);
pdraw->have_back = 0;
DRI2CreateDrawable(psc->base.dpy, xDrawable);
pdp = (struct dri2_display *)dpyPriv->dri2Display;
/* Create a new drawable */
pdraw->driDrawable =
(*psc->dri2->createNewDrawable) (psc->driScreen,
config->driConfig, pdraw);
if (!pdraw->driDrawable) {
DRI2DestroyDrawable(psc->base.dpy, xDrawable);
free(pdraw);
return NULL;
}
if (__glxHashInsert(pdp->dri2Hash, xDrawable, pdraw)) {
(*psc->core->destroyDrawable) (pdraw->driDrawable);
DRI2DestroyDrawable(psc->base.dpy, xDrawable);
free(pdraw);
return None;
}
/*
* Make sure server has the same swap interval we do for the new
* drawable.
*/
if (psc->vtable.setSwapInterval)
psc->vtable.setSwapInterval(&pdraw->base, pdraw->swap_interval);
return &pdraw->base;
}
static int
dri2DrawableGetMSC(struct glx_screen *psc, __GLXDRIdrawable *pdraw,
int64_t *ust, int64_t *msc, int64_t *sbc)
{
xcb_connection_t *c = XGetXCBConnection(pdraw->psc->dpy);
xcb_dri2_get_msc_cookie_t get_msc_cookie;
xcb_dri2_get_msc_reply_t *get_msc_reply;
get_msc_cookie = xcb_dri2_get_msc_unchecked(c, pdraw->xDrawable);
get_msc_reply = xcb_dri2_get_msc_reply(c, get_msc_cookie, NULL);
if (!get_msc_reply)
return 0;
*ust = merge_counter(get_msc_reply->ust_hi, get_msc_reply->ust_lo);
*msc = merge_counter(get_msc_reply->msc_hi, get_msc_reply->msc_lo);
*sbc = merge_counter(get_msc_reply->sbc_hi, get_msc_reply->sbc_lo);
free(get_msc_reply);
return 1;
}
static int
dri2WaitForMSC(__GLXDRIdrawable *pdraw, int64_t target_msc, int64_t divisor,
int64_t remainder, int64_t *ust, int64_t *msc, int64_t *sbc)
{
xcb_connection_t *c = XGetXCBConnection(pdraw->psc->dpy);
xcb_dri2_wait_msc_cookie_t wait_msc_cookie;
xcb_dri2_wait_msc_reply_t *wait_msc_reply;
uint32_t target_msc_hi, target_msc_lo;
uint32_t divisor_hi, divisor_lo;
uint32_t remainder_hi, remainder_lo;
split_counter(target_msc, &target_msc_hi, &target_msc_lo);
split_counter(divisor, &divisor_hi, &divisor_lo);
split_counter(remainder, &remainder_hi, &remainder_lo);
wait_msc_cookie = xcb_dri2_wait_msc_unchecked(c, pdraw->xDrawable,
target_msc_hi, target_msc_lo,
divisor_hi, divisor_lo,
remainder_hi, remainder_lo);
wait_msc_reply = xcb_dri2_wait_msc_reply(c, wait_msc_cookie, NULL);
if (!wait_msc_reply)
return 0;
*ust = merge_counter(wait_msc_reply->ust_hi, wait_msc_reply->ust_lo);
*msc = merge_counter(wait_msc_reply->msc_hi, wait_msc_reply->msc_lo);
*sbc = merge_counter(wait_msc_reply->sbc_hi, wait_msc_reply->sbc_lo);
free(wait_msc_reply);
return 1;
}
static int
dri2WaitForSBC(__GLXDRIdrawable *pdraw, int64_t target_sbc, int64_t *ust,
int64_t *msc, int64_t *sbc)
{
xcb_connection_t *c = XGetXCBConnection(pdraw->psc->dpy);
xcb_dri2_wait_sbc_cookie_t wait_sbc_cookie;
xcb_dri2_wait_sbc_reply_t *wait_sbc_reply;
uint32_t target_sbc_hi, target_sbc_lo;
split_counter(target_sbc, &target_sbc_hi, &target_sbc_lo);
wait_sbc_cookie = xcb_dri2_wait_sbc_unchecked(c, pdraw->xDrawable,
target_sbc_hi, target_sbc_lo);
wait_sbc_reply = xcb_dri2_wait_sbc_reply(c, wait_sbc_cookie, NULL);
if (!wait_sbc_reply)
return 0;
*ust = merge_counter(wait_sbc_reply->ust_hi, wait_sbc_reply->ust_lo);
*msc = merge_counter(wait_sbc_reply->msc_hi, wait_sbc_reply->msc_lo);
*sbc = merge_counter(wait_sbc_reply->sbc_hi, wait_sbc_reply->sbc_lo);
free(wait_sbc_reply);
return 1;
}
static __DRIcontext *
dri2GetCurrentContext()
{
struct glx_context *gc = __glXGetCurrentContext();
return (gc != &dummyContext) ? gc->driContext : NULL;
}
/**
* dri2Throttle - Request driver throttling
*
* This function uses the DRI2 throttle extension to give the
* driver the opportunity to throttle on flush front, copysubbuffer
* and swapbuffers.
*/
static void
dri2Throttle(struct dri2_screen *psc,
struct dri2_drawable *draw,
enum __DRI2throttleReason reason)
{
if (psc->throttle) {
__DRIcontext *ctx = dri2GetCurrentContext();
psc->throttle->throttle(ctx, draw->driDrawable, reason);
}
}
/**
* Asks the driver to flush any queued work necessary for serializing with the
* X command stream, and optionally the slightly more strict requirement of
* glFlush() equivalence (which would require flushing even if nothing had
* been drawn to a window system framebuffer, for example).
*/
static void
dri2Flush(struct dri2_screen *psc,
__DRIcontext *ctx,
struct dri2_drawable *draw,
unsigned flags,
enum __DRI2throttleReason throttle_reason)
{
if (ctx && psc->f && psc->f->base.version >= 4) {
psc->f->flush_with_flags(ctx, draw->driDrawable, flags, throttle_reason);
} else {
if (flags & __DRI2_FLUSH_CONTEXT)
glFlush();
if (psc->f)
psc->f->flush(draw->driDrawable);
dri2Throttle(psc, draw, throttle_reason);
}
}
static void
__dri2CopySubBuffer(__GLXDRIdrawable *pdraw, int x, int y,
int width, int height,
enum __DRI2throttleReason reason, Bool flush)
{
struct dri2_drawable *priv = (struct dri2_drawable *) pdraw;
struct dri2_screen *psc = (struct dri2_screen *) pdraw->psc;
XRectangle xrect;
XserverRegion region;
__DRIcontext *ctx = dri2GetCurrentContext();
unsigned flags;
/* Check we have the right attachments */
if (!priv->have_back)
return;
xrect.x = x;
xrect.y = priv->height - y - height;
xrect.width = width;
xrect.height = height;
flags = __DRI2_FLUSH_DRAWABLE;
if (flush)
flags |= __DRI2_FLUSH_CONTEXT;
dri2Flush(psc, ctx, priv, flags, __DRI2_THROTTLE_COPYSUBBUFFER);
region = XFixesCreateRegion(psc->base.dpy, &xrect, 1);
DRI2CopyRegion(psc->base.dpy, pdraw->xDrawable, region,
DRI2BufferFrontLeft, DRI2BufferBackLeft);
/* Refresh the fake front (if present) after we just damaged the real
* front.
*/
if (priv->have_fake_front)
DRI2CopyRegion(psc->base.dpy, pdraw->xDrawable, region,
DRI2BufferFakeFrontLeft, DRI2BufferFrontLeft);
XFixesDestroyRegion(psc->base.dpy, region);
}
static void
dri2CopySubBuffer(__GLXDRIdrawable *pdraw, int x, int y,
int width, int height, Bool flush)
{
__dri2CopySubBuffer(pdraw, x, y, width, height,
__DRI2_THROTTLE_COPYSUBBUFFER, flush);
}
static void
dri2_copy_drawable(struct dri2_drawable *priv, int dest, int src)
{
XRectangle xrect;
XserverRegion region;
struct dri2_screen *psc = (struct dri2_screen *) priv->base.psc;
xrect.x = 0;
xrect.y = 0;
xrect.width = priv->width;
xrect.height = priv->height;
if (psc->f)
(*psc->f->flush) (priv->driDrawable);
region = XFixesCreateRegion(psc->base.dpy, &xrect, 1);
DRI2CopyRegion(psc->base.dpy, priv->base.xDrawable, region, dest, src);
XFixesDestroyRegion(psc->base.dpy, region);
}
static void
dri2_wait_x(struct glx_context *gc)
{
struct dri2_drawable *priv = (struct dri2_drawable *)
GetGLXDRIDrawable(gc->currentDpy, gc->currentDrawable);
if (priv == NULL || !priv->have_fake_front)
return;
dri2_copy_drawable(priv, DRI2BufferFakeFrontLeft, DRI2BufferFrontLeft);
}
static void
dri2_wait_gl(struct glx_context *gc)
{
struct dri2_drawable *priv = (struct dri2_drawable *)
GetGLXDRIDrawable(gc->currentDpy, gc->currentDrawable);
if (priv == NULL || !priv->have_fake_front)
return;
dri2_copy_drawable(priv, DRI2BufferFrontLeft, DRI2BufferFakeFrontLeft);
}
/**
* Called by the driver when it needs to update the real front buffer with the
* contents of its fake front buffer.
*/
static void
dri2FlushFrontBuffer(__DRIdrawable *driDrawable, void *loaderPrivate)
{
struct glx_display *priv;
struct glx_context *gc;
struct dri2_drawable *pdraw = loaderPrivate;
struct dri2_screen *psc;
if (!pdraw)
return;
if (!pdraw->base.psc)
return;
psc = (struct dri2_screen *) pdraw->base.psc;
priv = __glXInitialize(psc->base.dpy);
if (priv == NULL)
return;
gc = __glXGetCurrentContext();
dri2Throttle(psc, pdraw, __DRI2_THROTTLE_FLUSHFRONT);
dri2_wait_gl(gc);
}
static void
dri2DestroyScreen(struct glx_screen *base)
{
struct dri2_screen *psc = (struct dri2_screen *) base;
/* Free the direct rendering per screen data */
(*psc->core->destroyScreen) (psc->driScreen);
driDestroyConfigs(psc->driver_configs);
free(psc->driverName);
close(psc->fd);
free(psc);
}
/**
* Process list of buffer received from the server
*
* Processes the list of buffers received in a reply from the server to either
* \c DRI2GetBuffers or \c DRI2GetBuffersWithFormat.
*/
static void
process_buffers(struct dri2_drawable * pdraw, DRI2Buffer * buffers,
unsigned count)
{
int i;
pdraw->bufferCount = count;
pdraw->have_fake_front = 0;
pdraw->have_back = 0;
/* This assumes the DRI2 buffer attachment tokens matches the
* __DRIbuffer tokens. */
for (i = 0; i < count; i++) {
pdraw->buffers[i].attachment = buffers[i].attachment;
pdraw->buffers[i].name = buffers[i].name;
pdraw->buffers[i].pitch = buffers[i].pitch;
pdraw->buffers[i].cpp = buffers[i].cpp;
pdraw->buffers[i].flags = buffers[i].flags;
if (pdraw->buffers[i].attachment == __DRI_BUFFER_FAKE_FRONT_LEFT)
pdraw->have_fake_front = 1;
if (pdraw->buffers[i].attachment == __DRI_BUFFER_BACK_LEFT)
pdraw->have_back = 1;
}
}
unsigned dri2GetSwapEventType(Display* dpy, XID drawable)
{
struct glx_display *glx_dpy = __glXInitialize(dpy);
__GLXDRIdrawable *pdraw;
pdraw = dri2GetGlxDrawableFromXDrawableId(dpy, drawable);
if (!pdraw || !(pdraw->eventMask & GLX_BUFFER_SWAP_COMPLETE_INTEL_MASK))
return 0;
return glx_dpy->codes.first_event + GLX_BufferSwapComplete;
}
static void show_fps(struct dri2_drawable *draw)
{
const int interval =
((struct dri2_screen *) draw->base.psc)->show_fps_interval;
struct timeval tv;
uint64_t current_time;
gettimeofday(&tv, NULL);
current_time = (uint64_t)tv.tv_sec*1000000 + (uint64_t)tv.tv_usec;
draw->frames++;
if (draw->previous_time + interval * 1000000 <= current_time) {
if (draw->previous_time) {
fprintf(stderr, "libGL: FPS = %.2f\n",
((uint64_t)draw->frames * 1000000) /
(double)(current_time - draw->previous_time));
}
draw->frames = 0;
draw->previous_time = current_time;
}
}
static int64_t
dri2XcbSwapBuffers(Display *dpy,
__GLXDRIdrawable *pdraw,
int64_t target_msc,
int64_t divisor,
int64_t remainder)
{
xcb_dri2_swap_buffers_cookie_t swap_buffers_cookie;
xcb_dri2_swap_buffers_reply_t *swap_buffers_reply;
uint32_t target_msc_hi, target_msc_lo;
uint32_t divisor_hi, divisor_lo;
uint32_t remainder_hi, remainder_lo;
int64_t ret = 0;
xcb_connection_t *c = XGetXCBConnection(dpy);
split_counter(target_msc, &target_msc_hi, &target_msc_lo);
split_counter(divisor, &divisor_hi, &divisor_lo);
split_counter(remainder, &remainder_hi, &remainder_lo);
swap_buffers_cookie =
xcb_dri2_swap_buffers_unchecked(c, pdraw->xDrawable,
target_msc_hi, target_msc_lo,
divisor_hi, divisor_lo,
remainder_hi, remainder_lo);
/* Immediately wait on the swapbuffers reply. If we didn't, we'd have
* to do so some time before reusing a (non-pageflipped) backbuffer.
* Otherwise, the new rendering could get ahead of the X Server's
* dispatch of the swapbuffer and you'd display garbage.
*
* We use XSync() first to reap the invalidate events through the event
* filter, to ensure that the next drawing doesn't use an invalidated
* buffer.
*/
XSync(dpy, False);
swap_buffers_reply =
xcb_dri2_swap_buffers_reply(c, swap_buffers_cookie, NULL);
if (swap_buffers_reply) {
ret = merge_counter(swap_buffers_reply->swap_hi,
swap_buffers_reply->swap_lo);
free(swap_buffers_reply);
}
return ret;
}
static int64_t
dri2SwapBuffers(__GLXDRIdrawable *pdraw, int64_t target_msc, int64_t divisor,
int64_t remainder, Bool flush)
{
struct dri2_drawable *priv = (struct dri2_drawable *) pdraw;
struct dri2_screen *psc = (struct dri2_screen *) priv->base.psc;
int64_t ret = 0;
/* Check we have the right attachments */
if (!priv->have_back)
return ret;
__DRIcontext *ctx = dri2GetCurrentContext();
unsigned flags = __DRI2_FLUSH_DRAWABLE;
if (flush)
flags |= __DRI2_FLUSH_CONTEXT;
dri2Flush(psc, ctx, priv, flags, __DRI2_THROTTLE_SWAPBUFFER);
ret = dri2XcbSwapBuffers(pdraw->psc->dpy, pdraw,
target_msc, divisor, remainder);
if (psc->show_fps_interval) {
show_fps(priv);
}
return ret;
}
static __DRIbuffer *
dri2GetBuffers(__DRIdrawable * driDrawable,
int *width, int *height,
unsigned int *attachments, int count,
int *out_count, void *loaderPrivate)
{
struct dri2_drawable *pdraw = loaderPrivate;
DRI2Buffer *buffers;
buffers = DRI2GetBuffers(pdraw->base.psc->dpy, pdraw->base.xDrawable,
width, height, attachments, count, out_count);
if (buffers == NULL)
return NULL;
pdraw->width = *width;
pdraw->height = *height;
process_buffers(pdraw, buffers, *out_count);
free(buffers);
return pdraw->buffers;
}
static __DRIbuffer *
dri2GetBuffersWithFormat(__DRIdrawable * driDrawable,
int *width, int *height,
unsigned int *attachments, int count,
int *out_count, void *loaderPrivate)
{
struct dri2_drawable *pdraw = loaderPrivate;
DRI2Buffer *buffers;
buffers = DRI2GetBuffersWithFormat(pdraw->base.psc->dpy,
pdraw->base.xDrawable,
width, height, attachments,
count, out_count);
if (buffers == NULL)
return NULL;
pdraw->width = *width;
pdraw->height = *height;
process_buffers(pdraw, buffers, *out_count);
free(buffers);
return pdraw->buffers;
}
static int
dri2SetSwapInterval(__GLXDRIdrawable *pdraw, int interval)
{
xcb_connection_t *c = XGetXCBConnection(pdraw->psc->dpy);
struct dri2_drawable *priv = (struct dri2_drawable *) pdraw;
struct dri2_screen *psc = (struct dri2_screen *) priv->base.psc;
if (!dri_valid_swap_interval(psc->driScreen, psc->config, interval))
return GLX_BAD_VALUE;
xcb_dri2_swap_interval(c, priv->base.xDrawable, interval);
priv->swap_interval = interval;
return 0;
}
static int
dri2GetSwapInterval(__GLXDRIdrawable *pdraw)
{
struct dri2_drawable *priv = (struct dri2_drawable *) pdraw;
return priv->swap_interval;
}
static void
driSetBackgroundContext(void *loaderPrivate)
{
__glXSetCurrentContext(loaderPrivate);
}
static GLboolean
driIsThreadSafe(void *loaderPrivate)
{
struct glx_context *pcp = (struct glx_context *) loaderPrivate;
/* Check Xlib is running in thread safe mode
*
* 'lock_fns' is the XLockDisplay function pointer of the X11 display 'dpy'.
* It wll be NULL if XInitThreads wasn't called.
*/
return pcp->psc->dpy->lock_fns != NULL;
}
static const __DRIdri2LoaderExtension dri2LoaderExtension = {
.base = { __DRI_DRI2_LOADER, 3 },
.getBuffers = dri2GetBuffers,
.flushFrontBuffer = dri2FlushFrontBuffer,
.getBuffersWithFormat = dri2GetBuffersWithFormat,
};
const __DRIuseInvalidateExtension dri2UseInvalidate = {
.base = { __DRI_USE_INVALIDATE, 1 }
};
const __DRIbackgroundCallableExtension driBackgroundCallable = {
.base = { __DRI_BACKGROUND_CALLABLE, 2 },
.setBackgroundContext = driSetBackgroundContext,
.isThreadSafe = driIsThreadSafe,
};
_X_HIDDEN void
dri2InvalidateBuffers(Display *dpy, XID drawable)
{
__GLXDRIdrawable *pdraw =
dri2GetGlxDrawableFromXDrawableId(dpy, drawable);
struct dri2_screen *psc;
struct dri2_drawable *pdp = (struct dri2_drawable *) pdraw;
if (!pdraw)
return;
psc = (struct dri2_screen *) pdraw->psc;
if (psc->f && psc->f->base.version >= 3 && psc->f->invalidate)
psc->f->invalidate(pdp->driDrawable);
}
static void
dri2_bind_tex_image(__GLXDRIdrawable *base,
int buffer, const int *attrib_list)
{
struct glx_context *gc = __glXGetCurrentContext();
struct dri2_drawable *pdraw = (struct dri2_drawable *) base;
struct dri2_screen *psc;
if (pdraw != NULL) {
psc = (struct dri2_screen *) base->psc;
if (psc->texBuffer->base.version >= 2 &&
psc->texBuffer->setTexBuffer2 != NULL) {
(*psc->texBuffer->setTexBuffer2) (gc->driContext,
pdraw->base.textureTarget,
pdraw->base.textureFormat,
pdraw->driDrawable);
}
else {
(*psc->texBuffer->setTexBuffer) (gc->driContext,
pdraw->base.textureTarget,
pdraw->driDrawable);
}
}
}
static void
dri2_release_tex_image(__GLXDRIdrawable *base, int buffer)
{
struct glx_context *gc = __glXGetCurrentContext();
struct dri2_drawable *pdraw = (struct dri2_drawable *) base;
struct dri2_screen *psc;
if (pdraw != NULL) {
psc = (struct dri2_screen *) base->psc;
if (psc->texBuffer->base.version >= 3 &&
psc->texBuffer->releaseTexBuffer != NULL) {
(*psc->texBuffer->releaseTexBuffer) (gc->driContext,
pdraw->base.textureTarget,
pdraw->driDrawable);
}
}
}
static const struct glx_context_vtable dri2_context_vtable = {
.destroy = dri2_destroy_context,
.bind = dri2_bind_context,
.unbind = dri2_unbind_context,
.wait_gl = dri2_wait_gl,
.wait_x = dri2_wait_x,
.interop_query_device_info = dri2_interop_query_device_info,
.interop_export_object = dri2_interop_export_object
};
static void
dri2BindExtensions(struct dri2_screen *psc, struct glx_display * priv,
const char *driverName)
{
const unsigned mask = psc->dri2->getAPIMask(psc->driScreen);
const __DRIextension **extensions;
int i;
extensions = psc->core->getExtensions(psc->driScreen);
__glXEnableDirectExtension(&psc->base, "GLX_EXT_swap_control");
__glXEnableDirectExtension(&psc->base, "GLX_SGI_swap_control");
__glXEnableDirectExtension(&psc->base, "GLX_MESA_swap_control");
__glXEnableDirectExtension(&psc->base, "GLX_SGI_make_current_read");
/*
* GLX_INTEL_swap_event is broken on the server side, where it's
* currently unconditionally enabled. This completely breaks
* systems running on drivers which don't support that extension.
* There's no way to test for its presence on this side, so instead
* of disabling it unconditionally, just disable it for drivers
* which are known to not support it.
*
* This was fixed in xserver 1.15.0 (190b03215), so now we only
* disable the broken driver.
*/
if (strcmp(driverName, "vmwgfx") != 0) {
__glXEnableDirectExtension(&psc->base, "GLX_INTEL_swap_event");
}
__glXEnableDirectExtension(&psc->base, "GLX_ARB_create_context");
__glXEnableDirectExtension(&psc->base, "GLX_ARB_create_context_profile");
__glXEnableDirectExtension(&psc->base, "GLX_EXT_no_config_context");
if ((mask & ((1 << __DRI_API_GLES) |
(1 << __DRI_API_GLES2) |
(1 << __DRI_API_GLES3))) != 0) {
__glXEnableDirectExtension(&psc->base,
"GLX_EXT_create_context_es_profile");
__glXEnableDirectExtension(&psc->base,
"GLX_EXT_create_context_es2_profile");
}
for (i = 0; extensions[i]; i++) {
if ((strcmp(extensions[i]->name, __DRI_TEX_BUFFER) == 0)) {
psc->texBuffer = (__DRItexBufferExtension *) extensions[i];
__glXEnableDirectExtension(&psc->base, "GLX_EXT_texture_from_pixmap");
}
if ((strcmp(extensions[i]->name, __DRI2_FLUSH) == 0)) {
psc->f = (__DRI2flushExtension *) extensions[i];
/* internal driver extension, no GL extension exposed */
}
if ((strcmp(extensions[i]->name, __DRI2_CONFIG_QUERY) == 0))
psc->config = (__DRI2configQueryExtension *) extensions[i];
if (((strcmp(extensions[i]->name, __DRI2_THROTTLE) == 0)))
psc->throttle = (__DRI2throttleExtension *) extensions[i];
if (strcmp(extensions[i]->name, __DRI2_ROBUSTNESS) == 0)
__glXEnableDirectExtension(&psc->base,
"GLX_ARB_create_context_robustness");
if (strcmp(extensions[i]->name, __DRI2_RENDERER_QUERY) == 0) {
psc->rendererQuery = (__DRI2rendererQueryExtension *) extensions[i];