summaryrefslogtreecommitdiffstats
path: root/src/egl/drivers/dri2/platform_wayland.c
blob: afafbedb1c24f87b938ed653ca0c7cf0d3a63c28 (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
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
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
/*
 * Copyright © 2011-2012 Intel Corporation
 *
 * 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 and this permission notice (including the next
 * paragraph) 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 THE AUTHORS OR COPYRIGHT
 * HOLDERS 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.
 *
 * Authors:
 *    Kristian Høgsberg <krh@bitplanet.net>
 *    Benjamin Franzke <benjaminfranzke@googlemail.com>
 */

#include <stdlib.h>
#include <string.h>
#include <limits.h>
#include <dlfcn.h>
#include <errno.h>
#include <unistd.h>
#include <fcntl.h>
#include <xf86drm.h>

#include "egl_dri2.h"
#include "egl_dri2_fallbacks.h"
#include "loader.h"

#include <wayland-client.h>
#include "wayland-drm-client-protocol.h"

enum wl_drm_format_flags {
   HAS_ARGB8888 = 1,
   HAS_XRGB8888 = 2,
   HAS_RGB565 = 4,
};

static EGLBoolean
dri2_wl_swap_interval(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *surf,
                      EGLint interval);

static void
sync_callback(void *data, struct wl_callback *callback, uint32_t serial)
{
   int *done = data;

   *done = 1;
   wl_callback_destroy(callback);
}

static const struct wl_callback_listener sync_listener = {
   sync_callback
};

static int
roundtrip(struct dri2_egl_display *dri2_dpy)
{
   struct wl_callback *callback;
   int done = 0, ret = 0;

   callback = wl_display_sync(dri2_dpy->wl_dpy);
   wl_callback_add_listener(callback, &sync_listener, &done);
   wl_proxy_set_queue((struct wl_proxy *) callback, dri2_dpy->wl_queue);
   while (ret != -1 && !done)
      ret = wl_display_dispatch_queue(dri2_dpy->wl_dpy, dri2_dpy->wl_queue);

   if (!done)
      wl_callback_destroy(callback);

   return ret;
}

static void
wl_buffer_release(void *data, struct wl_buffer *buffer)
{
   struct dri2_egl_surface *dri2_surf = data;
   int i;

   for (i = 0; i < ARRAY_SIZE(dri2_surf->color_buffers); ++i)
      if (dri2_surf->color_buffers[i].wl_buffer == buffer)
         break;

   if (i == ARRAY_SIZE(dri2_surf->color_buffers)) {
      wl_buffer_destroy(buffer);
      return;
   }

   dri2_surf->color_buffers[i].locked = 0;
}

static struct wl_buffer_listener wl_buffer_listener = {
   wl_buffer_release
};

static void
resize_callback(struct wl_egl_window *wl_win, void *data)
{
   struct dri2_egl_surface *dri2_surf = data;
   struct dri2_egl_display *dri2_dpy =
      dri2_egl_display(dri2_surf->base.Resource.Display);

   (*dri2_dpy->flush->invalidate)(dri2_surf->dri_drawable);
}

/**
 * Called via eglCreateWindowSurface(), drv->API.CreateWindowSurface().
 */
static _EGLSurface *
dri2_wl_create_surface(_EGLDriver *drv, _EGLDisplay *disp, EGLint type,
                       _EGLConfig *conf, EGLNativeWindowType window,
                       const EGLint *attrib_list)
{
   struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
   struct dri2_egl_config *dri2_conf = dri2_egl_config(conf);
   struct dri2_egl_surface *dri2_surf;

   (void) drv;

   dri2_surf = malloc(sizeof *dri2_surf);
   if (!dri2_surf) {
      _eglError(EGL_BAD_ALLOC, "dri2_create_surface");
      return NULL;
   }
   
   memset(dri2_surf, 0, sizeof *dri2_surf);
   if (!_eglInitSurface(&dri2_surf->base, disp, type, conf, attrib_list))
      goto cleanup_surf;

   if (conf->RedSize == 5)
      dri2_surf->format = WL_DRM_FORMAT_RGB565;
   else if (conf->AlphaSize == 0)
      dri2_surf->format = WL_DRM_FORMAT_XRGB8888;
   else
      dri2_surf->format = WL_DRM_FORMAT_ARGB8888;

   switch (type) {
   case EGL_WINDOW_BIT:
      dri2_surf->wl_win = (struct wl_egl_window *) window;

      dri2_surf->wl_win->private = dri2_surf;
      dri2_surf->wl_win->resize_callback = resize_callback;

      dri2_surf->base.Width =  -1;
      dri2_surf->base.Height = -1;
      break;
   default: 
      goto cleanup_surf;
   }

   dri2_surf->dri_drawable = 
      (*dri2_dpy->dri2->createNewDrawable) (dri2_dpy->dri_screen,
					    type == EGL_WINDOW_BIT ?
					    dri2_conf->dri_double_config : 
					    dri2_conf->dri_single_config,
					    dri2_surf);
   if (dri2_surf->dri_drawable == NULL) {
      _eglError(EGL_BAD_ALLOC, "dri2->createNewDrawable");
      goto cleanup_dri_drawable;
   }

   return &dri2_surf->base;

 cleanup_dri_drawable:
   dri2_dpy->core->destroyDrawable(dri2_surf->dri_drawable);
 cleanup_surf:
   free(dri2_surf);

   return NULL;
}

/**
 * Called via eglCreateWindowSurface(), drv->API.CreateWindowSurface().
 */
static _EGLSurface *
dri2_wl_create_window_surface(_EGLDriver *drv, _EGLDisplay *disp,
                              _EGLConfig *conf, EGLNativeWindowType window,
                              const EGLint *attrib_list)
{
   struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
   _EGLSurface *surf;

   surf = dri2_wl_create_surface(drv, disp, EGL_WINDOW_BIT, conf,
                                 window, attrib_list);

   if (surf != NULL)
      dri2_wl_swap_interval(drv, disp, surf, dri2_dpy->default_swap_interval);

   return surf;
}

/**
 * Called via eglDestroySurface(), drv->API.DestroySurface().
 */
static EGLBoolean
dri2_wl_destroy_surface(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *surf)
{
   struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
   struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surf);
   int i;

   (void) drv;

   if (!_eglPutSurface(surf))
      return EGL_TRUE;

   (*dri2_dpy->core->destroyDrawable)(dri2_surf->dri_drawable);

   for (i = 0; i < ARRAY_SIZE(dri2_surf->color_buffers); i++) {
      if (dri2_surf->color_buffers[i].wl_buffer)
         wl_buffer_destroy(dri2_surf->color_buffers[i].wl_buffer);
      if (dri2_surf->color_buffers[i].dri_image)
         dri2_dpy->image->destroyImage(dri2_surf->color_buffers[i].dri_image);
   }

   for (i = 0; i < __DRI_BUFFER_COUNT; i++)
      if (dri2_surf->dri_buffers[i] &&
          dri2_surf->dri_buffers[i]->attachment != __DRI_BUFFER_BACK_LEFT)
         dri2_dpy->dri2->releaseBuffer(dri2_dpy->dri_screen,
                                       dri2_surf->dri_buffers[i]);

   if (dri2_surf->throttle_callback)
      wl_callback_destroy(dri2_surf->throttle_callback);

   if (dri2_surf->base.Type == EGL_WINDOW_BIT) {
      dri2_surf->wl_win->private = NULL;
      dri2_surf->wl_win->resize_callback = NULL;
   }

   free(surf);

   return EGL_TRUE;
}

static void
dri2_wl_release_buffers(struct dri2_egl_surface *dri2_surf)
{
   struct dri2_egl_display *dri2_dpy =
      dri2_egl_display(dri2_surf->base.Resource.Display);
   int i;

   for (i = 0; i < ARRAY_SIZE(dri2_surf->color_buffers); i++) {
      if (dri2_surf->color_buffers[i].wl_buffer &&
          !dri2_surf->color_buffers[i].locked)
         wl_buffer_destroy(dri2_surf->color_buffers[i].wl_buffer);
      if (dri2_surf->color_buffers[i].dri_image)
         dri2_dpy->image->destroyImage(dri2_surf->color_buffers[i].dri_image);

      dri2_surf->color_buffers[i].wl_buffer = NULL;
      dri2_surf->color_buffers[i].dri_image = NULL;
      dri2_surf->color_buffers[i].locked = 0;
   }

   for (i = 0; i < __DRI_BUFFER_COUNT; i++)
      if (dri2_surf->dri_buffers[i] &&
          dri2_surf->dri_buffers[i]->attachment != __DRI_BUFFER_BACK_LEFT)
         dri2_dpy->dri2->releaseBuffer(dri2_dpy->dri_screen,
                                       dri2_surf->dri_buffers[i]);
}

static int
get_back_bo(struct dri2_egl_surface *dri2_surf)
{
   struct dri2_egl_display *dri2_dpy =
      dri2_egl_display(dri2_surf->base.Resource.Display);
   int i;

   /* We always want to throttle to some event (either a frame callback or
    * a sync request) after the commit so that we can be sure the
    * compositor has had a chance to handle it and send us a release event
    * before we look for a free buffer */
   while (dri2_surf->throttle_callback != NULL)
      if (wl_display_dispatch_queue(dri2_dpy->wl_dpy,
                                    dri2_dpy->wl_queue) == -1)
         return -1;

   if (dri2_surf->back == NULL) {
      for (i = 0; i < ARRAY_SIZE(dri2_surf->color_buffers); i++) {
         /* Get an unlocked buffer, preferrably one with a dri_buffer
          * already allocated. */
         if (dri2_surf->color_buffers[i].locked)
            continue;
         if (dri2_surf->back == NULL)
            dri2_surf->back = &dri2_surf->color_buffers[i];
         else if (dri2_surf->back->dri_image == NULL)
            dri2_surf->back = &dri2_surf->color_buffers[i];
      }
   }

   if (dri2_surf->back == NULL)
      return -1;
   if (dri2_surf->back->dri_image == NULL) {
      dri2_surf->back->dri_image = 
         dri2_dpy->image->createImage(dri2_dpy->dri_screen,
                                      dri2_surf->base.Width,
                                      dri2_surf->base.Height,
                                      __DRI_IMAGE_FORMAT_ARGB8888,
                                      __DRI_IMAGE_USE_SHARE,
                                      NULL);
      dri2_surf->back->age = 0;
   }
   if (dri2_surf->back->dri_image == NULL)
      return -1;

   dri2_surf->back->locked = 1;

   return 0;
}


static void
back_bo_to_dri_buffer(struct dri2_egl_surface *dri2_surf, __DRIbuffer *buffer)
{
   struct dri2_egl_display *dri2_dpy =
      dri2_egl_display(dri2_surf->base.Resource.Display);
   __DRIimage *image;
   int name, pitch;

   image = dri2_surf->back->dri_image;

   dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_NAME, &name);
   dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_STRIDE, &pitch);

   buffer->attachment = __DRI_BUFFER_BACK_LEFT;
   buffer->name = name;
   buffer->pitch = pitch;
   buffer->cpp = 4;
   buffer->flags = 0;
}

static int
get_aux_bo(struct dri2_egl_surface *dri2_surf,
	   unsigned int attachment, unsigned int format, __DRIbuffer *buffer)
{
   struct dri2_egl_display *dri2_dpy =
      dri2_egl_display(dri2_surf->base.Resource.Display);
   __DRIbuffer *b = dri2_surf->dri_buffers[attachment];

   if (b == NULL) {
      b = dri2_dpy->dri2->allocateBuffer(dri2_dpy->dri_screen,
					 attachment, format,
					 dri2_surf->base.Width,
					 dri2_surf->base.Height);
      dri2_surf->dri_buffers[attachment] = b;
   }
   if (b == NULL)
      return -1;

   memcpy(buffer, b, sizeof *buffer);

   return 0;
}

static int
update_buffers(struct dri2_egl_surface *dri2_surf)
{
   struct dri2_egl_display *dri2_dpy =
      dri2_egl_display(dri2_surf->base.Resource.Display);
   int i;

   if (dri2_surf->base.Type == EGL_WINDOW_BIT &&
       (dri2_surf->base.Width != dri2_surf->wl_win->width || 
        dri2_surf->base.Height != dri2_surf->wl_win->height)) {

      dri2_wl_release_buffers(dri2_surf);

      dri2_surf->base.Width  = dri2_surf->wl_win->width;
      dri2_surf->base.Height = dri2_surf->wl_win->height;
      dri2_surf->dx = dri2_surf->wl_win->dx;
      dri2_surf->dy = dri2_surf->wl_win->dy;
   }

   if (get_back_bo(dri2_surf) < 0) {
      _eglError(EGL_BAD_ALLOC, "failed to allocate color buffer");
      return -1;
   }

   /* If we have an extra unlocked buffer at this point, we had to do triple
    * buffering for a while, but now can go back to just double buffering.
    * That means we can free any unlocked buffer now. */
   for (i = 0; i < ARRAY_SIZE(dri2_surf->color_buffers); i++) {
      if (!dri2_surf->color_buffers[i].locked &&
          dri2_surf->color_buffers[i].wl_buffer) {
         wl_buffer_destroy(dri2_surf->color_buffers[i].wl_buffer);
         dri2_dpy->image->destroyImage(dri2_surf->color_buffers[i].dri_image);
         dri2_surf->color_buffers[i].wl_buffer = NULL;
         dri2_surf->color_buffers[i].dri_image = NULL;
      }
   }

   return 0;
}

static __DRIbuffer *
dri2_wl_get_buffers_with_format(__DRIdrawable * driDrawable,
                                int *width, int *height,
                                unsigned int *attachments, int count,
                                int *out_count, void *loaderPrivate)
{
   struct dri2_egl_surface *dri2_surf = loaderPrivate;
   int i, j;

   if (update_buffers(dri2_surf) < 0)
      return NULL;

   for (i = 0, j = 0; i < 2 * count; i += 2, j++) {
      switch (attachments[i]) {
      case __DRI_BUFFER_BACK_LEFT:
         back_bo_to_dri_buffer(dri2_surf, &dri2_surf->buffers[j]);
	 break;
      default:
	 if (get_aux_bo(dri2_surf, attachments[i], attachments[i + 1],
			&dri2_surf->buffers[j]) < 0) {
	    _eglError(EGL_BAD_ALLOC, "failed to allocate aux buffer");
	    return NULL;
	 }
	 break;
      }
   }

   *out_count = j;
   if (j == 0)
	   return NULL;

   *width = dri2_surf->base.Width;
   *height = dri2_surf->base.Height;

   return dri2_surf->buffers;
}

static __DRIbuffer *
dri2_wl_get_buffers(__DRIdrawable * driDrawable,
                    int *width, int *height,
                    unsigned int *attachments, int count,
                    int *out_count, void *loaderPrivate)
{
   unsigned int *attachments_with_format;
   __DRIbuffer *buffer;
   const unsigned int format = 32;
   int i;

   attachments_with_format = calloc(count * 2, sizeof(unsigned int));
   if (!attachments_with_format) {
      *out_count = 0;
      return NULL;
   }

   for (i = 0; i < count; ++i) {
      attachments_with_format[2*i] = attachments[i];
      attachments_with_format[2*i + 1] = format;
   }

   buffer =
      dri2_wl_get_buffers_with_format(driDrawable,
                                      width, height,
                                      attachments_with_format, count,
                                      out_count, loaderPrivate);

   free(attachments_with_format);

   return buffer;
}

static int
image_get_buffers(__DRIdrawable *driDrawable,
                  unsigned int format,
                  uint32_t *stamp,
                  void *loaderPrivate,
                  uint32_t buffer_mask,
                  struct __DRIimageList *buffers)
{
   struct dri2_egl_surface *dri2_surf = loaderPrivate;

   if (update_buffers(dri2_surf) < 0)
      return 0;

   buffers->image_mask = __DRI_IMAGE_BUFFER_BACK;
   buffers->back = dri2_surf->back->dri_image;

   return 1;
}

static void
dri2_wl_flush_front_buffer(__DRIdrawable * driDrawable, void *loaderPrivate)
{
   (void) driDrawable;
   (void) loaderPrivate;
}

static const __DRIimageLoaderExtension image_loader_extension = {
   .base = { __DRI_IMAGE_LOADER, 1 },

   .getBuffers          = image_get_buffers,
   .flushFrontBuffer    = dri2_wl_flush_front_buffer,
};

static void
wayland_throttle_callback(void *data,
                          struct wl_callback *callback,
                          uint32_t time)
{
   struct dri2_egl_surface *dri2_surf = data;

   dri2_surf->throttle_callback = NULL;
   wl_callback_destroy(callback);
}

static const struct wl_callback_listener throttle_listener = {
   wayland_throttle_callback
};

static void
create_wl_buffer(struct dri2_egl_surface *dri2_surf)
{
   struct dri2_egl_display *dri2_dpy =
      dri2_egl_display(dri2_surf->base.Resource.Display);
   int fd, stride, name;

   if (dri2_surf->current->wl_buffer != NULL)
      return;

   if (dri2_dpy->capabilities & WL_DRM_CAPABILITY_PRIME) {
      dri2_dpy->image->queryImage(dri2_surf->current->dri_image,
                                  __DRI_IMAGE_ATTRIB_FD, &fd);
      dri2_dpy->image->queryImage(dri2_surf->current->dri_image,
                                  __DRI_IMAGE_ATTRIB_STRIDE, &stride);

      dri2_surf->current->wl_buffer =
         wl_drm_create_prime_buffer(dri2_dpy->wl_drm,
                                    fd,
                                    dri2_surf->base.Width,
                                    dri2_surf->base.Height,
                                    dri2_surf->format,
                                    0, stride,
                                    0, 0,
                                    0, 0);
      close(fd);
   } else {
      dri2_dpy->image->queryImage(dri2_surf->current->dri_image,
                                  __DRI_IMAGE_ATTRIB_NAME, &name);
      dri2_dpy->image->queryImage(dri2_surf->current->dri_image,
                                  __DRI_IMAGE_ATTRIB_STRIDE, &stride);

      dri2_surf->current->wl_buffer =
         wl_drm_create_buffer(dri2_dpy->wl_drm,
                              name,
                              dri2_surf->base.Width,
                              dri2_surf->base.Height,
                              stride,
                              dri2_surf->format);
   }

   wl_proxy_set_queue((struct wl_proxy *) dri2_surf->current->wl_buffer,
                      dri2_dpy->wl_queue);
   wl_buffer_add_listener(dri2_surf->current->wl_buffer,
                          &wl_buffer_listener, dri2_surf);
}

/**
 * Called via eglSwapBuffers(), drv->API.SwapBuffers().
 */
static EGLBoolean
dri2_wl_swap_buffers_with_damage(_EGLDriver *drv,
                                 _EGLDisplay *disp,
                                 _EGLSurface *draw,
                                 const EGLint *rects,
                                 EGLint n_rects)
{
   struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
   struct dri2_egl_surface *dri2_surf = dri2_egl_surface(draw);
   struct dri2_egl_context *dri2_ctx;
   _EGLContext *ctx;
   int i;

   for (i = 0; i < ARRAY_SIZE(dri2_surf->color_buffers); i++)
      if (dri2_surf->color_buffers[i].age > 0)
         dri2_surf->color_buffers[i].age++;

   /* Make sure we have a back buffer in case we're swapping without ever
    * rendering. */
   if (get_back_bo(dri2_surf) < 0) {
      _eglError(EGL_BAD_ALLOC, "dri2_swap_buffers");
      return EGL_FALSE;
   }

   if (draw->SwapInterval > 0) {
      dri2_surf->throttle_callback =
         wl_surface_frame(dri2_surf->wl_win->surface);
      wl_callback_add_listener(dri2_surf->throttle_callback,
                               &throttle_listener, dri2_surf);
      wl_proxy_set_queue((struct wl_proxy *) dri2_surf->throttle_callback,
                         dri2_dpy->wl_queue);
   }

   dri2_surf->back->age = 1;
   dri2_surf->current = dri2_surf->back;
   dri2_surf->back = NULL;

   create_wl_buffer(dri2_surf);

   wl_surface_attach(dri2_surf->wl_win->surface,
                     dri2_surf->current->wl_buffer,
                     dri2_surf->dx, dri2_surf->dy);

   dri2_surf->wl_win->attached_width  = dri2_surf->base.Width;
   dri2_surf->wl_win->attached_height = dri2_surf->base.Height;
   /* reset resize growing parameters */
   dri2_surf->dx = 0;
   dri2_surf->dy = 0;

   if (n_rects == 0) {
      wl_surface_damage(dri2_surf->wl_win->surface,
                        0, 0, INT32_MAX, INT32_MAX);
   } else {
      for (i = 0; i < n_rects; i++) {
         const int *rect = &rects[i * 4];
         wl_surface_damage(dri2_surf->wl_win->surface,
                           rect[0],
                           dri2_surf->base.Height - rect[1] - rect[3],
                           rect[2], rect[3]);
      }
   }

   if (dri2_dpy->flush->base.version >= 4) {
      ctx = _eglGetCurrentContext();
      dri2_ctx = dri2_egl_context(ctx);
      (*dri2_dpy->flush->flush_with_flags)(dri2_ctx->dri_context,
                                           dri2_surf->dri_drawable,
                                           __DRI2_FLUSH_DRAWABLE,
                                           __DRI2_THROTTLE_SWAPBUFFER);
   } else {
      (*dri2_dpy->flush->flush)(dri2_surf->dri_drawable);
   }

   (*dri2_dpy->flush->invalidate)(dri2_surf->dri_drawable);

   wl_surface_commit(dri2_surf->wl_win->surface);

   /* If we're not waiting for a frame callback then we'll at least throttle
    * to a sync callback so that we always give a chance for the compositor to
    * handle the commit and send a release event before checking for a free
    * buffer */
   if (dri2_surf->throttle_callback == NULL) {
      dri2_surf->throttle_callback = wl_display_sync(dri2_dpy->wl_dpy);
      wl_callback_add_listener(dri2_surf->throttle_callback,
                               &throttle_listener, dri2_surf);
      wl_proxy_set_queue((struct wl_proxy *) dri2_surf->throttle_callback,
                         dri2_dpy->wl_queue);
   }

   wl_display_flush(dri2_dpy->wl_dpy);

   return EGL_TRUE;
}

static EGLint
dri2_wl_query_buffer_age(_EGLDriver *drv,
                         _EGLDisplay *disp, _EGLSurface *surface)
{
   struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surface);

   if (get_back_bo(dri2_surf) < 0) {
      _eglError(EGL_BAD_ALLOC, "dri2_query_buffer_age");
      return 0;
   }

   return dri2_surf->back->age;
}

static EGLBoolean
dri2_wl_swap_buffers(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *draw)
{
   return dri2_wl_swap_buffers_with_damage (drv, disp, draw, NULL, 0);
}

static struct wl_buffer *
dri2_wl_create_wayland_buffer_from_image_wl(_EGLDriver *drv,
                                            _EGLDisplay *disp,
                                            _EGLImage *img)
{
   struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
   struct dri2_egl_image *dri2_img = dri2_egl_image(img);
   __DRIimage *image = dri2_img->dri_image;
   struct wl_buffer *buffer;
   int width, height, format, pitch;
   enum wl_drm_format wl_format;

   dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_FORMAT, &format);

   switch (format) {
   case __DRI_IMAGE_FORMAT_ARGB8888:
      if (!(dri2_dpy->formats & HAS_ARGB8888))
         goto bad_format;
      wl_format = WL_DRM_FORMAT_ARGB8888;
      break;
   case __DRI_IMAGE_FORMAT_XRGB8888:
      if (!(dri2_dpy->formats & HAS_XRGB8888))
         goto bad_format;
      wl_format = WL_DRM_FORMAT_XRGB8888;
      break;
   default:
      goto bad_format;
   }

   dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_WIDTH, &width);
   dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_HEIGHT, &height);
   dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_STRIDE, &pitch);

   if (dri2_dpy->capabilities & WL_DRM_CAPABILITY_PRIME) {
      int fd;

      dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_FD, &fd);

      buffer =
         wl_drm_create_prime_buffer(dri2_dpy->wl_drm,
                                    fd,
                                    width, height,
                                    wl_format,
                                    0, pitch,
                                    0, 0,
                                    0, 0);

      close(fd);
   } else {
      int name;

      dri2_dpy->image->queryImage(image, __DRI_IMAGE_ATTRIB_NAME, &name);

      buffer =
         wl_drm_create_buffer(dri2_dpy->wl_drm,
                              name,
                              width, height,
                              pitch,
                              wl_format);
   }

   /* The buffer object will have been created with our internal event queue
    * because it is using the wl_drm object as a proxy factory. We want the
    * buffer to be used by the application so we'll reset it to the display's
    * default event queue */
   if (buffer)
      wl_proxy_set_queue((struct wl_proxy *) buffer, NULL);

   return buffer;

bad_format:
   _eglError(EGL_BAD_MATCH, "unsupported image format");
   return NULL;
}

static int
dri2_wl_authenticate(_EGLDisplay *disp, uint32_t id)
{
   struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
   int ret = 0;

   dri2_dpy->authenticated = 0;

   wl_drm_authenticate(dri2_dpy->wl_drm, id);
   if (roundtrip(dri2_dpy) < 0)
      ret = -1;

   if (!dri2_dpy->authenticated)
      ret = -1;

   /* reset authenticated */
   dri2_dpy->authenticated = 1;

   return ret;
}

/**
 * Called via eglTerminate(), drv->API.Terminate().
 */
static EGLBoolean
dri2_wl_terminate(_EGLDriver *drv, _EGLDisplay *disp)
{
   struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);

   _eglReleaseDisplayResources(drv, disp);
   _eglCleanupDisplay(disp);

   dri2_dpy->core->destroyScreen(dri2_dpy->dri_screen);
   close(dri2_dpy->fd);
   dlclose(dri2_dpy->driver);
   free(dri2_dpy->driver_name);
   free(dri2_dpy->device_name);
   wl_drm_destroy(dri2_dpy->wl_drm);
   if (dri2_dpy->own_device)
      wl_display_disconnect(dri2_dpy->wl_dpy);
   free(dri2_dpy);
   disp->DriverData = NULL;

   return EGL_TRUE;
}

static void
drm_handle_device(void *data, struct wl_drm *drm, const char *device)
{
   struct dri2_egl_display *dri2_dpy = data;
   drm_magic_t magic;

   dri2_dpy->device_name = strdup(device);
   if (!dri2_dpy->device_name)
      return;

#ifdef O_CLOEXEC
   dri2_dpy->fd = open(dri2_dpy->device_name, O_RDWR | O_CLOEXEC);
   if (dri2_dpy->fd == -1 && errno == EINVAL)
#endif
   {
      dri2_dpy->fd = open(dri2_dpy->device_name, O_RDWR);
      if (dri2_dpy->fd != -1)
         fcntl(dri2_dpy->fd, F_SETFD, fcntl(dri2_dpy->fd, F_GETFD) |
            FD_CLOEXEC);
   }
   if (dri2_dpy->fd == -1) {
      _eglLog(_EGL_WARNING, "wayland-egl: could not open %s (%s)",
	      dri2_dpy->device_name, strerror(errno));
      return;
   }

   drmGetMagic(dri2_dpy->fd, &magic);
   wl_drm_authenticate(dri2_dpy->wl_drm, magic);
}

static void
drm_handle_format(void *data, struct wl_drm *drm, uint32_t format)
{
   struct dri2_egl_display *dri2_dpy = data;

   switch (format) {
   case WL_DRM_FORMAT_ARGB8888:
      dri2_dpy->formats |= HAS_ARGB8888;
      break;
   case WL_DRM_FORMAT_XRGB8888:
      dri2_dpy->formats |= HAS_XRGB8888;
      break;
   case WL_DRM_FORMAT_RGB565:
      dri2_dpy->formats |= HAS_RGB565;
      break;
   }
}

static void
drm_handle_capabilities(void *data, struct wl_drm *drm, uint32_t value)
{
   struct dri2_egl_display *dri2_dpy = data;

   dri2_dpy->capabilities = value;
}

static void
drm_handle_authenticated(void *data, struct wl_drm *drm)
{
   struct dri2_egl_display *dri2_dpy = data;

   dri2_dpy->authenticated = 1;
}

static const struct wl_drm_listener drm_listener = {
	drm_handle_device,
	drm_handle_format,
	drm_handle_authenticated,
	drm_handle_capabilities
};

static void
registry_handle_global(void *data, struct wl_registry *registry, uint32_t name,
		       const char *interface, uint32_t version)
{
   struct dri2_egl_display *dri2_dpy = data;

   if (version > 1)
      version = 2;
   if (strcmp(interface, "wl_drm") == 0) {
      dri2_dpy->wl_drm =
         wl_registry_bind(registry, name, &wl_drm_interface, version);
      wl_drm_add_listener(dri2_dpy->wl_drm, &drm_listener, dri2_dpy);
   }
}

static void
registry_handle_global_remove(void *data, struct wl_registry *registry,
			      uint32_t name)
{
}

static const struct wl_registry_listener registry_listener = {
   registry_handle_global,
   registry_handle_global_remove
};

static EGLBoolean
dri2_wl_swap_interval(_EGLDriver *drv,
                   _EGLDisplay *disp,
                   _EGLSurface *surf,
                   EGLint interval)
{
   if (interval > surf->Config->MaxSwapInterval)
      interval = surf->Config->MaxSwapInterval;
   else if (interval < surf->Config->MinSwapInterval)
      interval = surf->Config->MinSwapInterval;

   surf->SwapInterval = interval;

   return EGL_TRUE;
}

static void
dri2_wl_setup_swap_interval(struct dri2_egl_display *dri2_dpy)
{
   GLint vblank_mode = DRI_CONF_VBLANK_DEF_INTERVAL_1;

   /* We can't use values greater than 1 on Wayland because we are using the
    * frame callback to synchronise the frame and the only way we be sure to
    * get a frame callback is to attach a new buffer. Therefore we can't just
    * sit drawing nothing to wait until the next ‘n’ frame callbacks */

   if (dri2_dpy->config)
      dri2_dpy->config->configQueryi(dri2_dpy->dri_screen,
                                     "vblank_mode", &vblank_mode);
   switch (vblank_mode) {
   case DRI_CONF_VBLANK_NEVER:
      dri2_dpy->min_swap_interval = 0;
      dri2_dpy->max_swap_interval = 0;
      dri2_dpy->default_swap_interval = 0;
      break;
   case DRI_CONF_VBLANK_ALWAYS_SYNC:
      dri2_dpy->min_swap_interval = 1;
      dri2_dpy->max_swap_interval = 1;
      dri2_dpy->default_swap_interval = 1;
      break;
   case DRI_CONF_VBLANK_DEF_INTERVAL_0:
      dri2_dpy->min_swap_interval = 0;
      dri2_dpy->max_swap_interval = 1;
      dri2_dpy->default_swap_interval = 0;
      break;
   default:
   case DRI_CONF_VBLANK_DEF_INTERVAL_1:
      dri2_dpy->min_swap_interval = 0;
      dri2_dpy->max_swap_interval = 1;
      dri2_dpy->default_swap_interval = 1;
      break;
   }
}

static struct dri2_egl_display_vtbl dri2_wl_display_vtbl = {
   .authenticate = dri2_wl_authenticate,
   .create_window_surface = dri2_wl_create_window_surface,
   .create_pixmap_surface = dri2_fallback_create_pixmap_surface,
   .create_pbuffer_surface = dri2_fallback_create_pbuffer_surface,
   .destroy_surface = dri2_wl_destroy_surface,
   .swap_interval = dri2_wl_swap_interval,
   .swap_buffers = dri2_wl_swap_buffers,
   .swap_buffers_with_damage = dri2_wl_swap_buffers_with_damage,
};

EGLBoolean
dri2_initialize_wayland(_EGLDriver *drv, _EGLDisplay *disp)
{
   struct dri2_egl_display *dri2_dpy;
   const __DRIconfig *config;
   uint32_t types;
   int i;
   static const unsigned int argb_masks[4] =
      { 0xff0000, 0xff00, 0xff, 0xff000000 };
   static const unsigned int rgb_masks[4] = { 0xff0000, 0xff00, 0xff, 0 };
   static const unsigned int rgb565_masks[4] = { 0xf800, 0x07e0, 0x001f, 0 };

   loader_set_logger(_eglLog);

   drv->API.Terminate = dri2_wl_terminate;
   drv->API.QueryBufferAge = dri2_wl_query_buffer_age;

   drv->API.CreateWaylandBufferFromImageWL =
      dri2_wl_create_wayland_buffer_from_image_wl;

   dri2_dpy = calloc(1, sizeof *dri2_dpy);
   if (!dri2_dpy)
      return _eglError(EGL_BAD_ALLOC, "eglInitialize");

   disp->DriverData = (void *) dri2_dpy;
   if (disp->PlatformDisplay == NULL) {
      dri2_dpy->wl_dpy = wl_display_connect(NULL);
      if (dri2_dpy->wl_dpy == NULL)
         goto cleanup_dpy;
      dri2_dpy->own_device = 1;
   } else {
      dri2_dpy->wl_dpy = disp->PlatformDisplay;
   }

   dri2_dpy->wl_queue = wl_display_create_queue(dri2_dpy->wl_dpy);

   if (dri2_dpy->own_device)
      wl_display_dispatch_pending(dri2_dpy->wl_dpy);

   dri2_dpy->wl_registry = wl_display_get_registry(dri2_dpy->wl_dpy);
   wl_proxy_set_queue((struct wl_proxy *) dri2_dpy->wl_registry,
                      dri2_dpy->wl_queue);
   wl_registry_add_listener(dri2_dpy->wl_registry,
                            &registry_listener, dri2_dpy);
   if (roundtrip(dri2_dpy) < 0 || dri2_dpy->wl_drm == NULL)
      goto cleanup_dpy;

   if (roundtrip(dri2_dpy) < 0 || dri2_dpy->fd == -1)
      goto cleanup_drm;

   if (roundtrip(dri2_dpy) < 0 || !dri2_dpy->authenticated)
      goto cleanup_fd;

   dri2_dpy->driver_name = loader_get_driver_for_fd(dri2_dpy->fd, 0);
   if (dri2_dpy->driver_name == NULL) {
      _eglError(EGL_BAD_ALLOC, "DRI2: failed to get driver name");
      goto cleanup_fd;
   }

   if (!dri2_load_driver(disp))
      goto cleanup_driver_name;

   dri2_dpy->dri2_loader_extension.base.name = __DRI_DRI2_LOADER;
   dri2_dpy->dri2_loader_extension.base.version = 3;
   dri2_dpy->dri2_loader_extension.getBuffers = dri2_wl_get_buffers;
   dri2_dpy->dri2_loader_extension.flushFrontBuffer = dri2_wl_flush_front_buffer;
   dri2_dpy->dri2_loader_extension.getBuffersWithFormat =
      dri2_wl_get_buffers_with_format;

   dri2_dpy->extensions[0] = &dri2_dpy->dri2_loader_extension.base;
   dri2_dpy->extensions[1] = &image_loader_extension.base;
   dri2_dpy->extensions[2] = &image_lookup_extension.base;
   dri2_dpy->extensions[3] = &use_invalidate.base;
   dri2_dpy->extensions[4] = NULL;

   dri2_dpy->swap_available = EGL_TRUE;

   if (!dri2_create_screen(disp))
      goto cleanup_driver;

   dri2_wl_setup_swap_interval(dri2_dpy);

   /* The server shouldn't advertise WL_DRM_CAPABILITY_PRIME if the driver
    * doesn't have createImageFromFds, since we're using the same driver on
    * both sides.  We don't want crash if that happens anyway, so fall back to
    * gem names if we don't have prime support. */

   if (dri2_dpy->image->base.version < 7 ||
       dri2_dpy->image->createImageFromFds == NULL)
      dri2_dpy->capabilities &= WL_DRM_CAPABILITY_PRIME;

   types = EGL_WINDOW_BIT;
   for (i = 0; dri2_dpy->driver_configs[i]; i++) {
      config = dri2_dpy->driver_configs[i];
      if (dri2_dpy->formats & HAS_XRGB8888)
	 dri2_add_config(disp, config, i + 1, types, NULL, rgb_masks);
      if (dri2_dpy->formats & HAS_ARGB8888)
	 dri2_add_config(disp, config, i + 1, types, NULL, argb_masks);
      if (dri2_dpy->formats & HAS_RGB565)
        dri2_add_config(disp, config, i + 1, types, NULL, rgb565_masks);
   }

   disp->Extensions.WL_bind_wayland_display = EGL_TRUE;
   disp->Extensions.WL_create_wayland_buffer_from_image = EGL_TRUE;
   disp->Extensions.EXT_buffer_age = EGL_TRUE;

   disp->Extensions.EXT_swap_buffers_with_damage = EGL_TRUE;

   /* we're supporting EGL 1.4 */
   disp->VersionMajor = 1;
   disp->VersionMinor = 4;

   /* Fill vtbl last to prevent accidentally calling virtual function during
    * initialization.
    */
   dri2_dpy->vtbl = &dri2_wl_display_vtbl;

   return EGL_TRUE;

 cleanup_driver:
   dlclose(dri2_dpy->driver);
 cleanup_driver_name:
   free(dri2_dpy->driver_name);
 cleanup_fd:
   close(dri2_dpy->fd);
 cleanup_drm:
   free(dri2_dpy->device_name);
   wl_drm_destroy(dri2_dpy->wl_drm);
 cleanup_dpy:
   free(dri2_dpy);
   
   return EGL_FALSE;
}