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
|
/*
* Copyright © 2010 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>
*/
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
#include <limits.h>
#include <dlfcn.h>
#include <fcntl.h>
#include <errno.h>
#include <unistd.h>
#include <xf86drm.h>
#include <GL/gl.h>
#include <GL/internal/dri_interface.h>
#include <xcb/xcb.h>
#include <xcb/dri2.h>
#include <xcb/xfixes.h>
#include <X11/Xlib-xcb.h>
#include <glapi/glapi.h>
#include "eglconfigutil.h"
#include "eglconfig.h"
#include "eglcontext.h"
#include "egldisplay.h"
#include "egldriver.h"
#include "eglcurrent.h"
#include "egllog.h"
#include "eglsurface.h"
struct dri2_egl_driver
{
_EGLDriver base;
};
struct dri2_egl_display
{
xcb_connection_t *conn;
int dri2_major;
int dri2_minor;
__DRIscreen *dri_screen;
void *driver;
__DRIcoreExtension *core;
__DRIdri2Extension *dri2;
__DRI2flushExtension *flush;
int fd;
__DRIdri2LoaderExtension loader_extension;
const __DRIextension *extensions[2];
};
struct dri2_egl_context
{
_EGLContext base;
__DRIcontext *dri_context;
};
struct dri2_egl_surface
{
_EGLSurface base;
__DRIdrawable *dri_drawable;
xcb_drawable_t drawable;
__DRIbuffer buffers[5];
int buffer_count;
xcb_xfixes_region_t region;
int have_back;
int have_fake_front;
int swap_interval;
};
struct dri2_egl_config
{
_EGLConfig base;
const __DRIconfig *dri_config;
};
static struct dri2_egl_driver *
dri2_egl_driver(_EGLDriver *drv)
{
return (struct dri2_egl_driver *) drv;
}
static struct dri2_egl_display *
dri2_egl_display(_EGLDisplay *dpy)
{
return (struct dri2_egl_display *) dpy->DriverData;
}
static struct dri2_egl_context *
dri2_egl_context(_EGLContext *ctx)
{
return (struct dri2_egl_context *) ctx;
}
static struct dri2_egl_surface *
dri2_egl_surface(_EGLSurface *surf)
{
return (struct dri2_egl_surface *) surf;
}
static struct dri2_egl_config *
dri2_egl_config(_EGLConfig *conf)
{
return (struct dri2_egl_config *) conf;
}
EGLint dri2_to_egl_attribute_map[] = {
0,
EGL_BUFFER_SIZE, /* __DRI_ATTRIB_BUFFER_SIZE */
EGL_LEVEL, /* __DRI_ATTRIB_LEVEL */
EGL_RED_SIZE, /* __DRI_ATTRIB_RED_SIZE */
EGL_GREEN_SIZE, /* __DRI_ATTRIB_GREEN_SIZE */
EGL_BLUE_SIZE, /* __DRI_ATTRIB_BLUE_SIZE */
0, /* __DRI_ATTRIB_LUMINANCE_SIZE */
EGL_ALPHA_SIZE, /* __DRI_ATTRIB_ALPHA_SIZE */
0, /* __DRI_ATTRIB_ALPHA_MASK_SIZE */
EGL_DEPTH_SIZE, /* __DRI_ATTRIB_DEPTH_SIZE */
EGL_STENCIL_SIZE, /* __DRI_ATTRIB_STENCIL_SIZE */
0, /* __DRI_ATTRIB_ACCUM_RED_SIZE */
0, /* __DRI_ATTRIB_ACCUM_GREEN_SIZE */
0, /* __DRI_ATTRIB_ACCUM_BLUE_SIZE */
0, /* __DRI_ATTRIB_ACCUM_ALPHA_SIZE */
EGL_SAMPLE_BUFFERS, /* __DRI_ATTRIB_SAMPLE_BUFFERS */
EGL_SAMPLES, /* __DRI_ATTRIB_SAMPLES */
0, /* __DRI_ATTRIB_RENDER_TYPE, */
0, /* __DRI_ATTRIB_CONFIG_CAVEAT */
0, /* __DRI_ATTRIB_CONFORMANT */
0, /* __DRI_ATTRIB_DOUBLE_BUFFER */
0, /* __DRI_ATTRIB_STEREO */
0, /* __DRI_ATTRIB_AUX_BUFFERS */
0, /* __DRI_ATTRIB_TRANSPARENT_TYPE */
0, /* __DRI_ATTRIB_TRANSPARENT_INDEX_VALUE */
0, /* __DRI_ATTRIB_TRANSPARENT_RED_VALUE */
0, /* __DRI_ATTRIB_TRANSPARENT_GREEN_VALUE */
0, /* __DRI_ATTRIB_TRANSPARENT_BLUE_VALUE */
0, /* __DRI_ATTRIB_TRANSPARENT_ALPHA_VALUE */
0, /* __DRI_ATTRIB_FLOAT_MODE */
0, /* __DRI_ATTRIB_RED_MASK */
0, /* __DRI_ATTRIB_GREEN_MASK */
0, /* __DRI_ATTRIB_BLUE_MASK */
0, /* __DRI_ATTRIB_ALPHA_MASK */
EGL_MAX_PBUFFER_WIDTH, /* __DRI_ATTRIB_MAX_PBUFFER_WIDTH */
EGL_MAX_PBUFFER_HEIGHT, /* __DRI_ATTRIB_MAX_PBUFFER_HEIGHT */
EGL_MAX_PBUFFER_PIXELS, /* __DRI_ATTRIB_MAX_PBUFFER_PIXELS */
0, /* __DRI_ATTRIB_OPTIMAL_PBUFFER_WIDTH */
0, /* __DRI_ATTRIB_OPTIMAL_PBUFFER_HEIGHT */
0, /* __DRI_ATTRIB_VISUAL_SELECT_GROUP */
0, /* __DRI_ATTRIB_SWAP_METHOD */
EGL_MAX_SWAP_INTERVAL, /* __DRI_ATTRIB_MAX_SWAP_INTERVAL */
EGL_MIN_SWAP_INTERVAL, /* __DRI_ATTRIB_MIN_SWAP_INTERVAL */
0, /* __DRI_ATTRIB_BIND_TO_TEXTURE_RGB */
0, /* __DRI_ATTRIB_BIND_TO_TEXTURE_RGBA */
0, /* __DRI_ATTRIB_BIND_TO_MIPMAP_TEXTURE */
0, /* __DRI_ATTRIB_BIND_TO_TEXTURE_TARGETS */
0, /* __DRI_ATTRIB_YINVERTED */
};
static void
dri2_add_config(_EGLDisplay *disp, const __DRIconfig *dri_config, int id)
{
struct dri2_egl_config *conf;
struct dri2_egl_display *dri2_dpy;
unsigned int attrib, value, double_buffer;
EGLint key, bind_to_texture_rgb, bind_to_texture_rgba;
int i;
dri2_dpy = disp->DriverData;
conf = malloc(sizeof *conf);
if (conf == NULL)
return;
conf->dri_config = dri_config;
_eglInitConfig(&conf->base, disp, id);
i = 0;
while (dri2_dpy->core->indexConfigAttrib(dri_config, i++, &attrib, &value)) {
switch (attrib) {
case 0:
break;
case __DRI_ATTRIB_RENDER_TYPE:
if (value & __DRI_ATTRIB_RGBA_BIT)
value = EGL_RGB_BUFFER;
else if (value & __DRI_ATTRIB_LUMINANCE_BIT)
value = EGL_LUMINANCE_BUFFER;
else
/* not valid */;
_eglSetConfigKey(&conf->base, EGL_COLOR_BUFFER_TYPE, value);
break;
case __DRI_ATTRIB_CONFIG_CAVEAT:
if (value & __DRI_ATTRIB_NON_CONFORMANT_CONFIG)
value = EGL_NON_CONFORMANT_CONFIG;
else if (value & __DRI_ATTRIB_SLOW_BIT)
value = EGL_SLOW_CONFIG;
else
value = EGL_NONE;
_eglSetConfigKey(&conf->base, EGL_CONFIG_CAVEAT, value);
break;
case __DRI_ATTRIB_BIND_TO_TEXTURE_RGB:
bind_to_texture_rgb = value;
break;
case __DRI_ATTRIB_BIND_TO_TEXTURE_RGBA:
bind_to_texture_rgba = value;
break;
case __DRI_ATTRIB_DOUBLE_BUFFER:
double_buffer = value;
break;
default:
key = dri2_to_egl_attribute_map[attrib];
if (key != 0)
_eglSetConfigKey(&conf->base, key, value);
break;
}
}
/* EGL_SWAP_BEHAVIOR_PRESERVED_BIT */
if (double_buffer) {
/* FIXME: Figure out how to get the visual ID and types */
_eglSetConfigKey(&conf->base, EGL_SURFACE_TYPE, EGL_WINDOW_BIT);
_eglSetConfigKey(&conf->base, EGL_NATIVE_VISUAL_ID, 0x21);
_eglSetConfigKey(&conf->base, EGL_NATIVE_VISUAL_TYPE,
XCB_VISUAL_CLASS_TRUE_COLOR);
} else {
_eglSetConfigKey(&conf->base,
EGL_SURFACE_TYPE, EGL_PIXMAP_BIT | EGL_PBUFFER_BIT);
_eglSetConfigKey(&conf->base,
EGL_BIND_TO_TEXTURE_RGB, bind_to_texture_rgb);
_eglSetConfigKey(&conf->base,
EGL_BIND_TO_TEXTURE_RGBA, bind_to_texture_rgba);
}
/* EGL_OPENGL_ES_BIT, EGL_OPENVG_BIT, EGL_OPENGL_ES2_BIT */
_eglSetConfigKey(&conf->base, EGL_RENDERABLE_TYPE, EGL_OPENGL_BIT);
_eglSetConfigKey(&conf->base, EGL_CONFORMANT, EGL_OPENGL_BIT);
if (!_eglValidateConfig(&conf->base, EGL_FALSE)) {
_eglLog(_EGL_DEBUG, "DRI2: failed to validate config %d", id);
free(conf);
return;
}
_eglAddConfig(disp, &conf->base);
}
/**
* 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
dri2_process_buffers(struct dri2_egl_surface *dri2_surf,
xcb_dri2_dri2_buffer_t *buffers, unsigned count)
{
struct dri2_egl_display *dri2_dpy =
dri2_egl_display(dri2_surf->base.Resource.Display);
xcb_rectangle_t rectangle;
int i;
dri2_surf->buffer_count = count;
dri2_surf->have_fake_front = 0;
dri2_surf->have_back = 0;
/* This assumes the DRI2 buffer attachment tokens matches the
* __DRIbuffer tokens. */
for (i = 0; i < count; i++) {
dri2_surf->buffers[i].attachment = buffers[i].attachment;
dri2_surf->buffers[i].name = buffers[i].name;
dri2_surf->buffers[i].pitch = buffers[i].pitch;
dri2_surf->buffers[i].cpp = buffers[i].cpp;
dri2_surf->buffers[i].flags = buffers[i].flags;
if (dri2_surf->buffers[i].attachment == __DRI_BUFFER_FAKE_FRONT_LEFT)
dri2_surf->have_fake_front = 1;
if (dri2_surf->buffers[i].attachment == __DRI_BUFFER_BACK_LEFT)
dri2_surf->have_back = 1;
}
if (dri2_surf->region != XCB_NONE)
xcb_xfixes_destroy_region(dri2_dpy->conn, dri2_surf->region);
rectangle.x = 0;
rectangle.y = 0;
rectangle.width = dri2_surf->base.Width;
rectangle.height = dri2_surf->base.Height;
dri2_surf->region = xcb_generate_id(dri2_dpy->conn);
xcb_xfixes_create_region(dri2_dpy->conn, dri2_surf->region, 1, &rectangle);
}
static __DRIbuffer *
dri2_get_buffers(__DRIdrawable * driDrawable,
int *width, int *height,
unsigned int *attachments, int count,
int *out_count, void *loaderPrivate)
{
struct dri2_egl_surface *dri2_surf = loaderPrivate;
struct dri2_egl_display *dri2_dpy =
dri2_egl_display(dri2_surf->base.Resource.Display);
xcb_dri2_dri2_buffer_t *buffers;
xcb_dri2_get_buffers_reply_t *reply;
xcb_dri2_get_buffers_cookie_t cookie;
cookie = xcb_dri2_get_buffers_unchecked (dri2_dpy->conn,
dri2_surf->drawable,
count, count, attachments);
reply = xcb_dri2_get_buffers_reply (dri2_dpy->conn, cookie, NULL);
buffers = xcb_dri2_get_buffers_buffers (reply);
if (buffers == NULL)
return NULL;
*out_count = reply->count;
dri2_surf->base.Width = *width = reply->width;
dri2_surf->base.Height = *height = reply->height;
dri2_process_buffers(dri2_surf, buffers, *out_count);
free(reply);
return dri2_surf->buffers;
}
static void
dri2_flush_front_buffer(__DRIdrawable * driDrawable, void *loaderPrivate)
{
/* FIXME: Does EGL support front buffer rendering at all? */
#if 0
struct dri2_egl_surface *dri2_surf = loaderPrivate;
dri2WaitGL(dri2_surf);
#endif
}
static __DRIbuffer *
dri2_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;
struct dri2_egl_display *dri2_dpy =
dri2_egl_display(dri2_surf->base.Resource.Display);
xcb_dri2_dri2_buffer_t *buffers;
xcb_dri2_get_buffers_with_format_reply_t *reply;
xcb_dri2_get_buffers_with_format_cookie_t cookie;
xcb_dri2_attach_format_t *format_attachments;
format_attachments = (xcb_dri2_attach_format_t *) attachments;
cookie = xcb_dri2_get_buffers_with_format_unchecked (dri2_dpy->conn,
dri2_surf->drawable,
count, count,
format_attachments);
reply = xcb_dri2_get_buffers_with_format_reply (dri2_dpy->conn,
cookie, NULL);
if (reply == NULL)
return NULL;
buffers = xcb_dri2_get_buffers_with_format_buffers (reply);
dri2_surf->base.Width = *width = reply->width;
dri2_surf->base.Height = *height = reply->height;
*out_count = reply->count;
dri2_process_buffers(dri2_surf, buffers, *out_count);
free(reply);
return dri2_surf->buffers;
}
#ifdef GLX_USE_TLS
static const char dri_driver_format[] = "%.*s/tls/%.*s_dri.so";
#else
static const char dri_driver_format[] = "%.*s/%.*s_dri.so";
#endif
static const char dri_driver_path[] = DEFAULT_DRIVER_DIR;
/**
* Called via eglInitialize(), GLX_drv->API.Initialize().
*/
static EGLBoolean
dri2_initialize(_EGLDriver *drv, _EGLDisplay *disp,
EGLint *major, EGLint *minor)
{
const __DRIextension **extensions;
const __DRIconfig **driver_configs;
struct dri2_egl_display *dri2_dpy;
char path[PATH_MAX], *search_paths, *p, *next, *end;
xcb_xfixes_query_version_reply_t *xfixes_query;
xcb_xfixes_query_version_cookie_t xfixes_query_cookie;
xcb_dri2_query_version_reply_t *dri2_query;
xcb_dri2_query_version_cookie_t dri2_query_cookie;
xcb_dri2_connect_reply_t *connect = NULL;
xcb_dri2_connect_cookie_t connect_cookie;
xcb_dri2_authenticate_reply_t *authenticate;
xcb_dri2_authenticate_cookie_t authenticate_cookie;
xcb_generic_error_t *error;
drm_magic_t magic;
xcb_screen_iterator_t s;
int i;
dri2_dpy = malloc(sizeof *dri2_dpy);
if (!dri2_dpy)
return _eglError(EGL_BAD_ALLOC, "eglInitialize");
disp->DriverData = (void *) dri2_dpy;
dri2_dpy->conn = XGetXCBConnection(disp->NativeDisplay);
if (!dri2_dpy->conn) {
dri2_dpy->conn = xcb_connect(0, 0);
if (!dri2_dpy->conn) {
_eglLog(_EGL_WARNING, "DRI2: xcb_connect failed");
free(dri2_dpy);
return EGL_FALSE;
}
}
xcb_prefetch_extension_data (dri2_dpy->conn, &xcb_xfixes_id);
xcb_prefetch_extension_data (dri2_dpy->conn, &xcb_dri2_id);
xfixes_query_cookie = xcb_xfixes_query_version(dri2_dpy->conn,
XCB_XFIXES_MAJOR_VERSION,
XCB_XFIXES_MINOR_VERSION);
dri2_query_cookie = xcb_dri2_query_version (dri2_dpy->conn,
XCB_DRI2_MAJOR_VERSION,
XCB_DRI2_MINOR_VERSION);
s = xcb_setup_roots_iterator(xcb_get_setup(dri2_dpy->conn));
connect_cookie = xcb_dri2_connect_unchecked (dri2_dpy->conn,
s.data->root,
XCB_DRI2_DRIVER_TYPE_DRI);
xfixes_query =
xcb_xfixes_query_version_reply (dri2_dpy->conn,
xfixes_query_cookie, &error);
if (xfixes_query == NULL ||
error != NULL || xfixes_query->major_version < 2) {
_eglLog(_EGL_FATAL, "DRI2: failed to query xfixes version");
free(error);
goto handle_error;
}
free(xfixes_query);
dri2_query =
xcb_dri2_query_version_reply (dri2_dpy->conn, dri2_query_cookie, &error);
if (dri2_query == NULL || error != NULL) {
_eglLog(_EGL_FATAL, "DRI2: failed to query version");
free(error);
goto handle_error;
}
dri2_dpy->dri2_major = dri2_query->major_version;
dri2_dpy->dri2_minor = dri2_query->minor_version;
free(dri2_query);
connect = xcb_dri2_connect_reply (dri2_dpy->conn, connect_cookie, NULL);
if (connect->driver_name_length == 0 && connect->device_name_length == 0) {
_eglLog(_EGL_FATAL, "DRI2: failed to authenticate");
goto handle_error;
}
search_paths = NULL;
if (geteuid() == getuid()) {
/* don't allow setuid apps to use LIBGL_DRIVERS_PATH */
search_paths = getenv("LIBGL_DRIVERS_PATH");
}
if (search_paths == NULL)
search_paths = DEFAULT_DRIVER_DIR;
dri2_dpy->driver = NULL;
end = search_paths + strlen(search_paths);
for (p = search_paths; p < end && dri2_dpy->driver == NULL; p = next + 1) {
int path_len;
next = strchr(p, ':');
if (next == NULL)
next = end;
path_len = next - p;
snprintf(path, sizeof path,
dri_driver_format,
path_len, p,
xcb_dri2_connect_driver_name_length (connect),
xcb_dri2_connect_driver_name (connect));
dri2_dpy->driver = dlopen(path, RTLD_NOW | RTLD_GLOBAL);
}
if (dri2_dpy->driver == NULL) {
_eglLog(_EGL_FATAL,
"DRI2: failed to open any driver (search paths %s)",
search_paths);
goto handle_error;
}
_eglLog(_EGL_DEBUG, "DRI2: dlopen(%s)", path);
extensions = dlsym(dri2_dpy->driver, __DRI_DRIVER_EXTENSIONS);
if (extensions == NULL) {
_eglLog(_EGL_FATAL,
"DRI2: driver exports no extensions (%s)", dlerror());
goto handle_error;
}
for (i = 0; extensions[i]; i++) {
if (strcmp(extensions[i]->name, __DRI_CORE) == 0)
dri2_dpy->core = (__DRIcoreExtension *) extensions[i];
if (strcmp(extensions[i]->name, __DRI_DRI2) == 0)
dri2_dpy->dri2 = (__DRIdri2Extension *) extensions[i];
}
if (dri2_dpy->core == NULL) {
_eglLog(_EGL_FATAL, "DRI2: driver has no core extension");
goto handle_error;
}
if (dri2_dpy->dri2 == NULL) {
_eglLog(_EGL_FATAL, "DRI2: driver has no dri2 extension");
goto handle_error;
}
snprintf(path, sizeof path, "%.*s",
xcb_dri2_connect_device_name_length (connect),
xcb_dri2_connect_device_name (connect));
dri2_dpy->fd = open (path, O_RDWR);
if (dri2_dpy->fd == -1) {
_eglLog(_EGL_FATAL,
"DRI2: could not open %s (%s)", path, strerror(errno));
goto handle_error;
}
if (drmGetMagic(dri2_dpy->fd, &magic)) {
_eglLog(_EGL_FATAL, "DRI2: failed to get drm magic");
goto handle_error;
}
authenticate_cookie = xcb_dri2_authenticate_unchecked (dri2_dpy->conn,
s.data->root, magic);
authenticate = xcb_dri2_authenticate_reply (dri2_dpy->conn,
authenticate_cookie, NULL);
if (authenticate == NULL || !authenticate->authenticated) {
_eglLog(_EGL_FATAL, "DRI2: failed to authenticate");
goto handle_error;
}
if (dri2_dpy->dri2_minor >= 1) {
dri2_dpy->loader_extension.base.name = __DRI_DRI2_LOADER;
dri2_dpy->loader_extension.base.version = 3;
dri2_dpy->loader_extension.getBuffers = dri2_get_buffers;
dri2_dpy->loader_extension.flushFrontBuffer = dri2_flush_front_buffer;
dri2_dpy->loader_extension.getBuffersWithFormat =
dri2_get_buffers_with_format;
} else {
dri2_dpy->loader_extension.base.name = __DRI_DRI2_LOADER;
dri2_dpy->loader_extension.base.version = 2;
dri2_dpy->loader_extension.getBuffers = dri2_get_buffers;
dri2_dpy->loader_extension.flushFrontBuffer = dri2_flush_front_buffer;
dri2_dpy->loader_extension.getBuffersWithFormat = NULL;
}
dri2_dpy->extensions[0] = &dri2_dpy->loader_extension.base;
dri2_dpy->extensions[1] = NULL;
dri2_dpy->dri_screen =
dri2_dpy->dri2->createNewScreen(0, dri2_dpy->fd, dri2_dpy->extensions,
&driver_configs, dri2_dpy);
if (dri2_dpy->dri_screen == NULL) {
_eglLog(_EGL_FATAL, "DRI2: failed to create dri screen");
free(dri2_dpy);
goto handle_error;
}
extensions = dri2_dpy->core->getExtensions(dri2_dpy->dri_screen);
for (i = 0; extensions[i]; i++) {
_eglLog(_EGL_DEBUG, "DRI2: found extension `%s'", extensions[i]->name);
if ((strcmp(extensions[i]->name, __DRI2_FLUSH) == 0))
dri2_dpy->flush = (__DRI2flushExtension *) extensions[i];
}
if (dri2_dpy->flush == NULL) {
_eglLog(_EGL_FATAL, "DRI2: driver doesn't support the flush extension");
free(dri2_dpy);
goto handle_error;
}
for (i = 0; driver_configs[i]; i++)
dri2_add_config(disp, driver_configs[i], i + 1);
if (!disp->NumConfigs) {
_eglLog(_EGL_WARNING, "DRI2: failed to create any config");
goto handle_error;
}
disp->ClientAPIsMask = EGL_OPENGL_BIT;
/* we're supporting EGL 1.4 */
*major = 1;
*minor = 4;
free (connect);
return EGL_TRUE;
handle_error:
free(connect);
free(dri2_dpy);
return EGL_FALSE;
}
/**
* Called via eglTerminate(), drv->API.Terminate().
*/
static EGLBoolean
dri2_terminate(_EGLDriver *drv, _EGLDisplay *disp)
{
struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
_eglReleaseDisplayResources(drv, disp);
_eglCleanupDisplay(disp);
close(dri2_dpy->fd);
dlclose(dri2_dpy->driver);
free(dri2_dpy);
disp->DriverData = NULL;
return EGL_TRUE;
}
/**
* Called via eglCreateContext(), drv->API.CreateContext().
*/
static _EGLContext *
dri2_create_context(_EGLDriver *drv, _EGLDisplay *disp, _EGLConfig *conf,
_EGLContext *share_list, const EGLint *attrib_list)
{
struct dri2_egl_context *dri2_ctx;
struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
struct dri2_egl_context *dri2_ctx_shared = dri2_egl_context(share_list);
struct dri2_egl_config *dri2_config = dri2_egl_config(conf);
dri2_ctx = malloc(sizeof *dri2_ctx);
if (!dri2_ctx) {
_eglError(EGL_BAD_ALLOC, "eglCreateContext");
return NULL;
}
if (!_eglInitContext(&dri2_ctx->base, disp, conf, attrib_list)) {
free(dri2_ctx);
return NULL;
}
dri2_ctx->dri_context =
dri2_dpy->dri2->createNewContext(dri2_dpy->dri_screen,
dri2_config->dri_config,
dri2_ctx_shared ?
dri2_ctx_shared->dri_context : NULL,
dri2_ctx);
if (!dri2_ctx->dri_context) {
free(dri2_ctx);
return NULL;
}
return &dri2_ctx->base;
}
static EGLBoolean
dri2_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);
if (_eglIsSurfaceBound(surf))
return EGL_TRUE;
(*dri2_dpy->core->destroyDrawable)(dri2_surf->dri_drawable);
xcb_dri2_destroy_drawable (dri2_dpy->conn, dri2_surf->drawable);
if (surf->Type == EGL_PBUFFER_BIT)
xcb_free_pixmap (dri2_dpy->conn, dri2_surf->drawable);
free(surf);
return EGL_TRUE;
}
/**
* Called via eglMakeCurrent(), drv->API.MakeCurrent().
*/
static EGLBoolean
dri2_make_current(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *dsurf,
_EGLSurface *rsurf, _EGLContext *ctx)
{
struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
struct dri2_egl_surface *dri2_dsurf = dri2_egl_surface(dsurf);
struct dri2_egl_surface *dri2_rsurf = dri2_egl_surface(rsurf);
struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
__DRIdrawable *ddraw, *rdraw;
__DRIcontext *cctx;
/* bind the new context and return the "orphaned" one */
if (!_eglBindContext(&ctx, &dsurf, &rsurf))
return EGL_FALSE;
ddraw = (dri2_dsurf) ? dri2_dsurf->dri_drawable : NULL;
rdraw = (dri2_rsurf) ? dri2_rsurf->dri_drawable : NULL;
cctx = (dri2_ctx) ? dri2_ctx->dri_context : NULL;
if ((cctx == NULL && ddraw == NULL && rdraw == NULL) ||
dri2_dpy->core->bindContext(cctx, ddraw, rdraw)) {
if (dsurf && !_eglIsSurfaceLinked(dsurf))
dri2_destroy_surface(drv, disp, dsurf);
if (rsurf && rsurf != dsurf && !_eglIsSurfaceLinked(dsurf))
dri2_destroy_surface(drv, disp, rsurf);
if (ctx != NULL && !_eglIsContextLinked(ctx))
dri2_dpy->core->unbindContext(dri2_egl_context(ctx)->dri_context);
return EGL_TRUE;
} else {
_eglBindContext(&ctx, &dsurf, &rsurf);
return EGL_FALSE;
}
}
/**
* Called via eglCreateWindowSurface(), drv->API.CreateWindowSurface().
*/
static _EGLSurface *
dri2_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;
xcb_get_geometry_cookie_t cookie;
xcb_get_geometry_reply_t *reply;
xcb_screen_iterator_t s;
xcb_generic_error_t *error;
dri2_surf = malloc(sizeof *dri2_surf);
if (!dri2_surf) {
_eglError(EGL_BAD_ALLOC, "eglCreateWindowSurface");
return NULL;
}
if (!_eglInitSurface(&dri2_surf->base, disp, type, conf, attrib_list)) {
free(dri2_surf);
return NULL;
}
dri2_surf->region = XCB_NONE;
if (type == EGL_PBUFFER_BIT) {
dri2_surf->drawable = xcb_generate_id(dri2_dpy->conn);
s = xcb_setup_roots_iterator(xcb_get_setup(dri2_dpy->conn));
xcb_create_pixmap(dri2_dpy->conn,
_eglGetConfigKey(conf, EGL_BUFFER_SIZE),
dri2_surf->drawable, s.data->root,
dri2_surf->base.Width, dri2_surf->base.Height);
} else {
dri2_surf->drawable = window;
}
dri2_surf->dri_drawable =
(*dri2_dpy->dri2->createNewDrawable) (dri2_dpy->dri_screen,
dri2_conf->dri_config, dri2_surf);
if (dri2_surf == NULL) {
_eglError(EGL_BAD_ALLOC, "eglCreateWindowSurface");
free(dri2_surf);
return NULL;
}
xcb_dri2_create_drawable (dri2_dpy->conn, dri2_surf->drawable);
cookie = xcb_get_geometry (dri2_dpy->conn, dri2_surf->drawable);
reply = xcb_get_geometry_reply (dri2_dpy->conn, cookie, &error);
if (reply == NULL || error != NULL) {
_eglError(EGL_BAD_ALLOC, "xcb_get_geometry");
free(dri2_surf);
free(error);
return NULL;
}
dri2_surf->base.Width = reply->width;
dri2_surf->base.Height = reply->height;
free(reply);
return &dri2_surf->base;
}
/**
* Called via eglCreateWindowSurface(), drv->API.CreateWindowSurface().
*/
static _EGLSurface *
dri2_create_window_surface(_EGLDriver *drv, _EGLDisplay *disp,
_EGLConfig *conf, EGLNativeWindowType window,
const EGLint *attrib_list)
{
return dri2_create_surface(drv, disp, EGL_WINDOW_BIT, conf,
window, attrib_list);
}
static _EGLSurface *
dri2_create_pixmap_surface(_EGLDriver *drv, _EGLDisplay *disp,
_EGLConfig *conf, EGLNativePixmapType pixmap,
const EGLint *attrib_list)
{
return dri2_create_surface(drv, disp, EGL_PIXMAP_BIT, conf,
pixmap, attrib_list);
}
static _EGLSurface *
dri2_create_pbuffer_surface(_EGLDriver *drv, _EGLDisplay *disp,
_EGLConfig *conf, const EGLint *attrib_list)
{
return dri2_create_surface(drv, disp, EGL_PBUFFER_BIT, conf,
XCB_WINDOW_NONE, attrib_list);
}
static EGLBoolean
dri2_swap_buffers(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *draw)
{
struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
struct dri2_egl_surface *dri2_surf = dri2_egl_surface(draw);
xcb_dri2_copy_region_cookie_t cookie;
(*dri2_dpy->flush->flush)(dri2_surf->dri_drawable);
#if 0
/* FIXME: Add support for dri swapbuffers, that'll give us swap
* interval and page flipping (at least for fullscreen windows) as
* well as the page flip event. */
#if __DRI2_FLUSH_VERSION >= 2
if (pdraw->psc->f)
(*pdraw->psc->f->flushInvalidate)(pdraw->driDrawable);
#endif
#endif
if (!dri2_surf->have_back)
return EGL_TRUE;
cookie = xcb_dri2_copy_region_unchecked(dri2_dpy->conn,
dri2_surf->drawable,
dri2_surf->region,
XCB_DRI2_ATTACHMENT_BUFFER_FRONT_LEFT,
XCB_DRI2_ATTACHMENT_BUFFER_BACK_LEFT);
free(xcb_dri2_copy_region_reply(dri2_dpy->conn, cookie, NULL));
return EGL_TRUE;
}
/*
* Called from eglGetProcAddress() via drv->API.GetProcAddress().
*/
static _EGLProc
dri2_get_proc_address(_EGLDriver *drv, const char *procname)
{
/* FIXME: Do we need to support lookup of EGL symbols too? */
return (_EGLProc) _glapi_get_proc_address(procname);
}
static EGLBoolean
dri2_wait_client(_EGLDriver *drv, _EGLDisplay *disp, _EGLContext *ctx)
{
struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
struct dri2_egl_surface *dri2_surf = dri2_egl_surface(ctx->DrawSurface);
/* FIXME: If EGL allows frontbuffer rendering for window surfaces,
* we need to copy fake to real here.*/
(*dri2_dpy->flush->flush)(dri2_surf->dri_drawable);
return EGL_TRUE;
}
static EGLBoolean
dri2_wait_native(_EGLDriver *drv, _EGLDisplay *disp, EGLint engine)
{
if (engine != EGL_CORE_NATIVE_ENGINE)
return _eglError(EGL_BAD_PARAMETER, "eglWaitNative");
/* glXWaitX(); */
return EGL_TRUE;
}
static void
dri2_unload(_EGLDriver *drv)
{
struct dri2_egl_driver *dri2_drv = dri2_egl_driver(drv);
free(dri2_drv);
}
static EGLBoolean
dri2_copy_buffers(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *surf,
EGLNativePixmapType target)
{
struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surf);
xcb_gcontext_t gc;
(*dri2_dpy->flush->flush)(dri2_surf->dri_drawable);
gc = xcb_generate_id(dri2_dpy->conn);
xcb_create_gc(dri2_dpy->conn, gc, target, 0, NULL);
xcb_copy_area(dri2_dpy->conn,
dri2_surf->drawable,
target,
gc,
0, 0,
0, 0,
dri2_surf->base.Width,
dri2_surf->base.Height);
xcb_free_gc(dri2_dpy->conn, gc);
return EGL_TRUE;
}
/**
* This is the main entrypoint into the driver, called by libEGL.
* Create a new _EGLDriver object and init its dispatch table.
*/
_EGLDriver *
_eglMain(const char *args)
{
struct dri2_egl_driver *dri2_drv;
dri2_drv = malloc(sizeof *dri2_drv);
if (!dri2_drv)
return NULL;
_eglInitDriverFallbacks(&dri2_drv->base);
dri2_drv->base.API.Initialize = dri2_initialize;
dri2_drv->base.API.Terminate = dri2_terminate;
dri2_drv->base.API.CreateContext = dri2_create_context;
dri2_drv->base.API.MakeCurrent = dri2_make_current;
dri2_drv->base.API.CreateWindowSurface = dri2_create_window_surface;
dri2_drv->base.API.CreatePixmapSurface = dri2_create_pixmap_surface;
dri2_drv->base.API.CreatePbufferSurface = dri2_create_pbuffer_surface;
dri2_drv->base.API.DestroySurface = dri2_destroy_surface;
dri2_drv->base.API.SwapBuffers = dri2_swap_buffers;
dri2_drv->base.API.GetProcAddress = dri2_get_proc_address;
dri2_drv->base.API.WaitClient = dri2_wait_client;
dri2_drv->base.API.WaitNative = dri2_wait_native;
dri2_drv->base.API.CopyBuffers = dri2_copy_buffers;
dri2_drv->base.Name = "DRI2";
dri2_drv->base.Unload = dri2_unload;
return &dri2_drv->base;
}
|