native_dri2.c revision 08e1076fd2d3f6fb879dd2529e7d035d6a399da2 
1/*
2 * Mesa 3-D graphics library
3 * Version:  7.8
4 *
5 * Copyright (C) 2009-2010 Chia-I Wu <olv@0xlab.org>
6 *
7 * Permission is hereby granted, free of charge, to any person obtaining a
8 * copy of this software and associated documentation files (the "Software"),
9 * to deal in the Software without restriction, including without limitation
10 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
11 * and/or sell copies of the Software, and to permit persons to whom the
12 * Software is furnished to do so, subject to the following conditions:
13 *
14 * The above copyright notice and this permission notice shall be included
15 * in all copies or substantial portions of the Software.
16 *
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
20 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
21 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
22 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
23 * DEALINGS IN THE SOFTWARE.
24 */
25
26#include "util/u_memory.h"
27#include "util/u_math.h"
28#include "util/u_format.h"
29#include "util/u_inlines.h"
30#include "util/u_hash_table.h"
31#include "pipe/p_compiler.h"
32#include "pipe/p_screen.h"
33#include "pipe/p_context.h"
34#include "pipe/p_state.h"
35#include "state_tracker/drm_driver.h"
36#include "egllog.h"
37
38#include "native_x11.h"
39#include "x11_screen.h"
40
41#include "common/native_helper.h"
42#ifdef HAVE_WAYLAND_BACKEND
43#include "common/native_wayland_drm_bufmgr_helper.h"
44#endif
45
46#ifdef GLX_DIRECT_RENDERING
47
48struct dri2_display {
49   struct native_display base;
50   Display *dpy;
51   boolean own_dpy;
52
53   const struct native_event_handler *event_handler;
54
55   struct x11_screen *xscr;
56   int xscr_number;
57   const char *dri_driver;
58   int dri_major, dri_minor;
59
60   struct dri2_config *configs;
61   int num_configs;
62
63   struct util_hash_table *surfaces;
64#ifdef HAVE_WAYLAND_BACKEND
65   struct wl_drm *wl_server_drm; /* for EGL_WL_bind_wayland_display */
66#endif
67};
68
69struct dri2_surface {
70   struct native_surface base;
71   Drawable drawable;
72   enum pipe_format color_format;
73   struct dri2_display *dri2dpy;
74
75   unsigned int server_stamp;
76   unsigned int client_stamp;
77   int width, height;
78   struct pipe_resource *textures[NUM_NATIVE_ATTACHMENTS];
79   uint valid_mask;
80
81   boolean have_back, have_fake;
82
83   struct x11_drawable_buffer *last_xbufs;
84   int last_num_xbufs;
85};
86
87struct dri2_config {
88   struct native_config base;
89};
90
91static INLINE struct dri2_display *
92dri2_display(const struct native_display *ndpy)
93{
94   return (struct dri2_display *) ndpy;
95}
96
97static INLINE struct dri2_surface *
98dri2_surface(const struct native_surface *nsurf)
99{
100   return (struct dri2_surface *) nsurf;
101}
102
103static INLINE struct dri2_config *
104dri2_config(const struct native_config *nconf)
105{
106   return (struct dri2_config *) nconf;
107}
108
109/**
110 * Process the buffers returned by the server.
111 */
112static void
113dri2_surface_process_drawable_buffers(struct native_surface *nsurf,
114                                      struct x11_drawable_buffer *xbufs,
115                                      int num_xbufs)
116{
117   struct dri2_surface *dri2surf = dri2_surface(nsurf);
118   struct dri2_display *dri2dpy = dri2surf->dri2dpy;
119   struct pipe_resource templ;
120   struct winsys_handle whandle;
121   uint valid_mask;
122   int i;
123
124   /* free the old textures */
125   for (i = 0; i < NUM_NATIVE_ATTACHMENTS; i++)
126      pipe_resource_reference(&dri2surf->textures[i], NULL);
127   dri2surf->valid_mask = 0x0;
128
129   dri2surf->have_back = FALSE;
130   dri2surf->have_fake = FALSE;
131
132   if (!xbufs)
133      return;
134
135   memset(&templ, 0, sizeof(templ));
136   templ.target = PIPE_TEXTURE_2D;
137   templ.last_level = 0;
138   templ.width0 = dri2surf->width;
139   templ.height0 = dri2surf->height;
140   templ.depth0 = 1;
141   templ.array_size = 1;
142   templ.format = dri2surf->color_format;
143   templ.bind = PIPE_BIND_RENDER_TARGET;
144
145   valid_mask = 0x0;
146   for (i = 0; i < num_xbufs; i++) {
147      struct x11_drawable_buffer *xbuf = &xbufs[i];
148      const char *desc;
149      enum native_attachment natt;
150
151      switch (xbuf->attachment) {
152      case DRI2BufferFrontLeft:
153         natt = NATIVE_ATTACHMENT_FRONT_LEFT;
154         desc = "DRI2 Front Buffer";
155         break;
156      case DRI2BufferFakeFrontLeft:
157         natt = NATIVE_ATTACHMENT_FRONT_LEFT;
158         desc = "DRI2 Fake Front Buffer";
159         dri2surf->have_fake = TRUE;
160         break;
161      case DRI2BufferBackLeft:
162         natt = NATIVE_ATTACHMENT_BACK_LEFT;
163         desc = "DRI2 Back Buffer";
164         dri2surf->have_back = TRUE;
165         break;
166      default:
167         desc = NULL;
168         break;
169      }
170
171      if (!desc || dri2surf->textures[natt]) {
172         if (!desc)
173            _eglLog(_EGL_WARNING, "unknown buffer %d", xbuf->attachment);
174         else
175            _eglLog(_EGL_WARNING, "both real and fake front buffers are listed");
176         continue;
177      }
178
179      memset(&whandle, 0, sizeof(whandle));
180      whandle.stride = xbuf->pitch;
181      whandle.handle = xbuf->name;
182      dri2surf->textures[natt] = dri2dpy->base.screen->resource_from_handle(
183         dri2dpy->base.screen, &templ, &whandle);
184      if (dri2surf->textures[natt])
185         valid_mask |= 1 << natt;
186   }
187
188   dri2surf->valid_mask = valid_mask;
189}
190
191/**
192 * Get the buffers from the server.
193 */
194static void
195dri2_surface_get_buffers(struct native_surface *nsurf, uint buffer_mask)
196{
197   struct dri2_surface *dri2surf = dri2_surface(nsurf);
198   struct dri2_display *dri2dpy = dri2surf->dri2dpy;
199   unsigned int dri2atts[NUM_NATIVE_ATTACHMENTS * 2];
200   int num_ins, num_outs, att;
201   struct x11_drawable_buffer *xbufs;
202   uint bpp = util_format_get_blocksizebits(dri2surf->color_format);
203   boolean with_format = FALSE; /* never ask for depth/stencil */
204
205   /* We must get the front on servers which doesn't support with format
206    * due to a silly bug in core dri2. You can't copy to/from a buffer
207    * that you haven't requested and you recive BadValue errors */
208   if (dri2surf->dri2dpy->dri_minor < 1) {
209      with_format = FALSE;
210      buffer_mask |= (1 << NATIVE_ATTACHMENT_FRONT_LEFT);
211   }
212
213   /* prepare the attachments */
214   num_ins = 0;
215   for (att = 0; att < NUM_NATIVE_ATTACHMENTS; att++) {
216      if (native_attachment_mask_test(buffer_mask, att)) {
217         unsigned int dri2att;
218
219         switch (att) {
220         case NATIVE_ATTACHMENT_FRONT_LEFT:
221            dri2att = DRI2BufferFrontLeft;
222            break;
223         case NATIVE_ATTACHMENT_BACK_LEFT:
224            dri2att = DRI2BufferBackLeft;
225            break;
226         case NATIVE_ATTACHMENT_FRONT_RIGHT:
227            dri2att = DRI2BufferFrontRight;
228            break;
229         case NATIVE_ATTACHMENT_BACK_RIGHT:
230            dri2att = DRI2BufferBackRight;
231            break;
232         default:
233            assert(0);
234            dri2att = 0;
235            break;
236         }
237
238         dri2atts[num_ins++] = dri2att;
239         if (with_format)
240            dri2atts[num_ins++] = bpp;
241      }
242   }
243   if (with_format)
244      num_ins /= 2;
245
246   xbufs = x11_drawable_get_buffers(dri2dpy->xscr, dri2surf->drawable,
247                                    &dri2surf->width, &dri2surf->height,
248                                    dri2atts, with_format, num_ins, &num_outs);
249
250   /* we should be able to do better... */
251   if (xbufs && dri2surf->last_num_xbufs == num_outs &&
252       memcmp(dri2surf->last_xbufs, xbufs, sizeof(*xbufs) * num_outs) == 0) {
253      FREE(xbufs);
254      dri2surf->client_stamp = dri2surf->server_stamp;
255      return;
256   }
257
258   dri2_surface_process_drawable_buffers(&dri2surf->base, xbufs, num_outs);
259
260   dri2surf->server_stamp++;
261   dri2surf->client_stamp = dri2surf->server_stamp;
262
263   if (dri2surf->last_xbufs)
264      FREE(dri2surf->last_xbufs);
265   dri2surf->last_xbufs = xbufs;
266   dri2surf->last_num_xbufs = num_outs;
267}
268
269/**
270 * Update the buffers of the surface.  This is a slow function due to the
271 * round-trip to the server.
272 */
273static boolean
274dri2_surface_update_buffers(struct native_surface *nsurf, uint buffer_mask)
275{
276   struct dri2_surface *dri2surf = dri2_surface(nsurf);
277
278   dri2_surface_get_buffers(&dri2surf->base, buffer_mask);
279
280   return ((dri2surf->valid_mask & buffer_mask) == buffer_mask);
281}
282
283/**
284 * Return TRUE if the surface receives DRI2_InvalidateBuffers events.
285 */
286static INLINE boolean
287dri2_surface_receive_events(struct native_surface *nsurf)
288{
289   struct dri2_surface *dri2surf = dri2_surface(nsurf);
290   return (dri2surf->dri2dpy->dri_minor >= 3);
291}
292
293static boolean
294dri2_surface_flush_frontbuffer(struct native_surface *nsurf)
295{
296   struct dri2_surface *dri2surf = dri2_surface(nsurf);
297   struct dri2_display *dri2dpy = dri2surf->dri2dpy;
298
299   /* copy to real front buffer */
300   if (dri2surf->have_fake)
301      x11_drawable_copy_buffers(dri2dpy->xscr, dri2surf->drawable,
302            0, 0, dri2surf->width, dri2surf->height,
303            DRI2BufferFakeFrontLeft, DRI2BufferFrontLeft);
304
305   /* force buffers to be updated in next validation call */
306   if (!dri2_surface_receive_events(&dri2surf->base)) {
307      dri2surf->server_stamp++;
308      dri2dpy->event_handler->invalid_surface(&dri2dpy->base,
309            &dri2surf->base, dri2surf->server_stamp);
310   }
311
312   return TRUE;
313}
314
315static boolean
316dri2_surface_swap_buffers(struct native_surface *nsurf)
317{
318   struct dri2_surface *dri2surf = dri2_surface(nsurf);
319   struct dri2_display *dri2dpy = dri2surf->dri2dpy;
320
321   /* copy to front buffer */
322   if (dri2surf->have_back)
323      x11_drawable_copy_buffers(dri2dpy->xscr, dri2surf->drawable,
324            0, 0, dri2surf->width, dri2surf->height,
325            DRI2BufferBackLeft, DRI2BufferFrontLeft);
326
327   /* and update fake front buffer */
328   if (dri2surf->have_fake)
329      x11_drawable_copy_buffers(dri2dpy->xscr, dri2surf->drawable,
330            0, 0, dri2surf->width, dri2surf->height,
331            DRI2BufferFrontLeft, DRI2BufferFakeFrontLeft);
332
333   /* force buffers to be updated in next validation call */
334   if (!dri2_surface_receive_events(&dri2surf->base)) {
335      dri2surf->server_stamp++;
336      dri2dpy->event_handler->invalid_surface(&dri2dpy->base,
337            &dri2surf->base, dri2surf->server_stamp);
338   }
339
340   return TRUE;
341}
342
343static boolean
344dri2_surface_present(struct native_surface *nsurf,
345                     const struct native_present_control *ctrl)
346{
347   boolean ret;
348
349   if (ctrl->swap_interval)
350      return FALSE;
351
352   switch (ctrl->natt) {
353   case NATIVE_ATTACHMENT_FRONT_LEFT:
354      ret = dri2_surface_flush_frontbuffer(nsurf);
355      break;
356   case NATIVE_ATTACHMENT_BACK_LEFT:
357      ret = dri2_surface_swap_buffers(nsurf);
358      break;
359   default:
360      ret = FALSE;
361      break;
362   }
363
364   return ret;
365}
366
367static boolean
368dri2_surface_validate(struct native_surface *nsurf, uint attachment_mask,
369                      unsigned int *seq_num, struct pipe_resource **textures,
370                      int *width, int *height)
371{
372   struct dri2_surface *dri2surf = dri2_surface(nsurf);
373
374   if (dri2surf->server_stamp != dri2surf->client_stamp ||
375       (dri2surf->valid_mask & attachment_mask) != attachment_mask) {
376      if (!dri2_surface_update_buffers(&dri2surf->base, attachment_mask))
377         return FALSE;
378   }
379
380   if (seq_num)
381      *seq_num = dri2surf->client_stamp;
382
383   if (textures) {
384      int att;
385      for (att = 0; att < NUM_NATIVE_ATTACHMENTS; att++) {
386         if (native_attachment_mask_test(attachment_mask, att)) {
387            struct pipe_resource *ptex = dri2surf->textures[att];
388
389            textures[att] = NULL;
390            pipe_resource_reference(&textures[att], ptex);
391         }
392      }
393   }
394
395   if (width)
396      *width = dri2surf->width;
397   if (height)
398      *height = dri2surf->height;
399
400   return TRUE;
401}
402
403static void
404dri2_surface_wait(struct native_surface *nsurf)
405{
406   struct dri2_surface *dri2surf = dri2_surface(nsurf);
407   struct dri2_display *dri2dpy = dri2surf->dri2dpy;
408
409   if (dri2surf->have_fake) {
410      x11_drawable_copy_buffers(dri2dpy->xscr, dri2surf->drawable,
411            0, 0, dri2surf->width, dri2surf->height,
412            DRI2BufferFrontLeft, DRI2BufferFakeFrontLeft);
413   }
414}
415
416static void
417dri2_surface_destroy(struct native_surface *nsurf)
418{
419   struct dri2_surface *dri2surf = dri2_surface(nsurf);
420   int i;
421
422   if (dri2surf->last_xbufs)
423      FREE(dri2surf->last_xbufs);
424
425   for (i = 0; i < NUM_NATIVE_ATTACHMENTS; i++) {
426      struct pipe_resource *ptex = dri2surf->textures[i];
427      pipe_resource_reference(&ptex, NULL);
428   }
429
430   if (dri2surf->drawable) {
431      x11_drawable_enable_dri2(dri2surf->dri2dpy->xscr,
432            dri2surf->drawable, FALSE);
433
434      util_hash_table_remove(dri2surf->dri2dpy->surfaces,
435            (void *) dri2surf->drawable);
436   }
437   FREE(dri2surf);
438}
439
440static struct dri2_surface *
441dri2_display_create_surface(struct native_display *ndpy,
442                            Drawable drawable,
443                            enum pipe_format color_format)
444{
445   struct dri2_display *dri2dpy = dri2_display(ndpy);
446   struct dri2_surface *dri2surf;
447
448   dri2surf = CALLOC_STRUCT(dri2_surface);
449   if (!dri2surf)
450      return NULL;
451
452   dri2surf->dri2dpy = dri2dpy;
453   dri2surf->drawable = drawable;
454   dri2surf->color_format = color_format;
455
456   dri2surf->base.destroy = dri2_surface_destroy;
457   dri2surf->base.present = dri2_surface_present;
458   dri2surf->base.validate = dri2_surface_validate;
459   dri2surf->base.wait = dri2_surface_wait;
460
461   if (drawable) {
462      x11_drawable_enable_dri2(dri2dpy->xscr, drawable, TRUE);
463      /* initialize the geometry */
464      dri2_surface_update_buffers(&dri2surf->base, 0x0);
465
466      util_hash_table_set(dri2surf->dri2dpy->surfaces,
467            (void *) dri2surf->drawable, (void *) &dri2surf->base);
468   }
469
470   return dri2surf;
471}
472
473static struct native_surface *
474dri2_display_create_window_surface(struct native_display *ndpy,
475                                   EGLNativeWindowType win,
476                                   const struct native_config *nconf)
477{
478   struct dri2_surface *dri2surf;
479
480   dri2surf = dri2_display_create_surface(ndpy,
481         (Drawable) win, nconf->color_format);
482   return (dri2surf) ? &dri2surf->base : NULL;
483}
484
485static struct native_surface *
486dri2_display_create_pixmap_surface(struct native_display *ndpy,
487                                   EGLNativePixmapType pix,
488                                   const struct native_config *nconf)
489{
490   struct dri2_surface *dri2surf;
491
492   if (!nconf) {
493      struct dri2_display *dri2dpy = dri2_display(ndpy);
494      uint depth, nconf_depth;
495      int i;
496
497      depth = x11_drawable_get_depth(dri2dpy->xscr, (Drawable) pix);
498      for (i = 0; i < dri2dpy->num_configs; i++) {
499         nconf_depth = util_format_get_blocksizebits(
500               dri2dpy->configs[i].base.color_format);
501         /* simple depth match for now */
502         if (depth == nconf_depth ||
503             (depth == 24 && depth + 8 == nconf_depth)) {
504            nconf = &dri2dpy->configs[i].base;
505            break;
506         }
507      }
508
509      if (!nconf)
510         return NULL;
511   }
512
513   dri2surf = dri2_display_create_surface(ndpy,
514         (Drawable) pix, nconf->color_format);
515   return (dri2surf) ? &dri2surf->base : NULL;
516}
517
518static int
519choose_color_format(const __GLcontextModes *mode, enum pipe_format formats[32])
520{
521   int count = 0;
522
523   switch (mode->rgbBits) {
524   case 32:
525      formats[count++] = PIPE_FORMAT_B8G8R8A8_UNORM;
526      formats[count++] = PIPE_FORMAT_A8R8G8B8_UNORM;
527      break;
528   case 24:
529      formats[count++] = PIPE_FORMAT_B8G8R8X8_UNORM;
530      formats[count++] = PIPE_FORMAT_X8R8G8B8_UNORM;
531      formats[count++] = PIPE_FORMAT_B8G8R8A8_UNORM;
532      formats[count++] = PIPE_FORMAT_A8R8G8B8_UNORM;
533      break;
534   case 16:
535      formats[count++] = PIPE_FORMAT_B5G6R5_UNORM;
536      break;
537   default:
538      break;
539   }
540
541   return count;
542}
543
544static boolean
545is_format_supported(struct pipe_screen *screen,
546                    enum pipe_format fmt, unsigned sample_count, boolean is_color)
547{
548   return screen->is_format_supported(screen, fmt, PIPE_TEXTURE_2D, sample_count,
549         (is_color) ? PIPE_BIND_RENDER_TARGET :
550         PIPE_BIND_DEPTH_STENCIL);
551}
552
553static boolean
554dri2_display_convert_config(struct native_display *ndpy,
555                            const __GLcontextModes *mode,
556                            struct native_config *nconf)
557{
558   enum pipe_format formats[32];
559   int num_formats, i;
560   int sample_count = 0;
561
562   if (!(mode->renderType & GLX_RGBA_BIT) || !mode->rgbMode)
563      return FALSE;
564
565   /* only interested in native renderable configs */
566   if (!mode->xRenderable || !mode->drawableType)
567      return FALSE;
568
569   /* fast/slow configs are probably not relevant */
570   if (mode->visualRating == GLX_SLOW_CONFIG)
571      return FALSE;
572
573   nconf->buffer_mask = 1 << NATIVE_ATTACHMENT_FRONT_LEFT;
574   if (mode->doubleBufferMode)
575      nconf->buffer_mask |= 1 << NATIVE_ATTACHMENT_BACK_LEFT;
576   if (mode->stereoMode) {
577      nconf->buffer_mask |= 1 << NATIVE_ATTACHMENT_FRONT_RIGHT;
578      if (mode->doubleBufferMode)
579         nconf->buffer_mask |= 1 << NATIVE_ATTACHMENT_BACK_RIGHT;
580   }
581
582   /* choose color format */
583   num_formats = choose_color_format(mode, formats);
584   for (i = 0; i < num_formats; i++) {
585      if (is_format_supported(ndpy->screen, formats[i], sample_count, TRUE)) {
586         nconf->color_format = formats[i];
587         break;
588      }
589   }
590   if (nconf->color_format == PIPE_FORMAT_NONE)
591      return FALSE;
592
593   if ((mode->drawableType & GLX_WINDOW_BIT) && mode->visualID)
594      nconf->window_bit = TRUE;
595   if (mode->drawableType & GLX_PIXMAP_BIT)
596      nconf->pixmap_bit = TRUE;
597
598   nconf->native_visual_id = mode->visualID;
599   switch (mode->visualType) {
600   case GLX_TRUE_COLOR:
601      nconf->native_visual_type = TrueColor;
602      break;
603   case GLX_DIRECT_COLOR:
604      nconf->native_visual_type = DirectColor;
605      break;
606   case GLX_PSEUDO_COLOR:
607      nconf->native_visual_type = PseudoColor;
608      break;
609   case GLX_STATIC_COLOR:
610      nconf->native_visual_type = StaticColor;
611      break;
612   case GLX_GRAY_SCALE:
613      nconf->native_visual_type = GrayScale;
614      break;
615   case GLX_STATIC_GRAY:
616      nconf->native_visual_type = StaticGray;
617      break;
618   }
619   nconf->level = mode->level;
620
621   if (mode->transparentPixel == GLX_TRANSPARENT_RGB) {
622      nconf->transparent_rgb = TRUE;
623      nconf->transparent_rgb_values[0] = mode->transparentRed;
624      nconf->transparent_rgb_values[1] = mode->transparentGreen;
625      nconf->transparent_rgb_values[2] = mode->transparentBlue;
626   }
627
628   return TRUE;
629}
630
631static const struct native_config **
632dri2_display_get_configs(struct native_display *ndpy, int *num_configs)
633{
634   struct dri2_display *dri2dpy = dri2_display(ndpy);
635   const struct native_config **configs;
636   int i;
637
638   /* first time */
639   if (!dri2dpy->configs) {
640      const __GLcontextModes *modes;
641      int num_modes, count;
642
643      modes = x11_screen_get_glx_configs(dri2dpy->xscr);
644      if (!modes)
645         return NULL;
646      num_modes = x11_context_modes_count(modes);
647
648      dri2dpy->configs = CALLOC(num_modes, sizeof(*dri2dpy->configs));
649      if (!dri2dpy->configs)
650         return NULL;
651
652      count = 0;
653      for (i = 0; i < num_modes; i++) {
654         struct native_config *nconf = &dri2dpy->configs[count].base;
655
656         if (dri2_display_convert_config(&dri2dpy->base, modes, nconf)) {
657            int j;
658            /* look for duplicates */
659            for (j = 0; j < count; j++) {
660               if (memcmp(&dri2dpy->configs[j], nconf, sizeof(*nconf)) == 0)
661                  break;
662            }
663            if (j == count)
664               count++;
665         }
666         modes = modes->next;
667      }
668
669      dri2dpy->num_configs = count;
670   }
671
672   configs = MALLOC(dri2dpy->num_configs * sizeof(*configs));
673   if (configs) {
674      for (i = 0; i < dri2dpy->num_configs; i++)
675         configs[i] = (const struct native_config *) &dri2dpy->configs[i];
676      if (num_configs)
677         *num_configs = dri2dpy->num_configs;
678   }
679
680   return configs;
681}
682
683static boolean
684dri2_display_get_pixmap_format(struct native_display *ndpy,
685                               EGLNativePixmapType pix,
686                               enum pipe_format *format)
687{
688   struct dri2_display *dri2dpy = dri2_display(ndpy);
689   boolean ret = EGL_TRUE;
690   uint depth;
691
692   depth = x11_drawable_get_depth(dri2dpy->xscr, (Drawable) pix);
693   switch (depth) {
694   case 32:
695   case 24:
696      *format = PIPE_FORMAT_B8G8R8A8_UNORM;
697      break;
698   case 16:
699      *format = PIPE_FORMAT_B5G6R5_UNORM;
700      break;
701   default:
702      *format = PIPE_FORMAT_NONE;
703      ret = EGL_FALSE;
704      break;
705   }
706
707   return ret;
708}
709
710static int
711dri2_display_get_param(struct native_display *ndpy,
712                       enum native_param_type param)
713{
714   int val;
715
716   switch (param) {
717   case NATIVE_PARAM_USE_NATIVE_BUFFER:
718      /* DRI2GetBuffers uses the native buffers */
719      val = TRUE;
720      break;
721   case NATIVE_PARAM_PRESERVE_BUFFER:
722      /* DRI2CopyRegion is used */
723      val = TRUE;
724      break;
725   case NATIVE_PARAM_MAX_SWAP_INTERVAL:
726   default:
727      val = 0;
728      break;
729   }
730
731   return val;
732}
733
734static void
735dri2_display_destroy(struct native_display *ndpy)
736{
737   struct dri2_display *dri2dpy = dri2_display(ndpy);
738
739   if (dri2dpy->configs)
740      FREE(dri2dpy->configs);
741
742   if (dri2dpy->base.screen)
743      dri2dpy->base.screen->destroy(dri2dpy->base.screen);
744
745   if (dri2dpy->surfaces)
746      util_hash_table_destroy(dri2dpy->surfaces);
747
748   if (dri2dpy->xscr)
749      x11_screen_destroy(dri2dpy->xscr);
750   if (dri2dpy->own_dpy)
751      XCloseDisplay(dri2dpy->dpy);
752   FREE(dri2dpy);
753}
754
755static void
756dri2_display_invalidate_buffers(struct x11_screen *xscr, Drawable drawable,
757                                void *user_data)
758{
759   struct native_display *ndpy = (struct native_display* ) user_data;
760   struct dri2_display *dri2dpy = dri2_display(ndpy);
761   struct native_surface *nsurf;
762   struct dri2_surface *dri2surf;
763
764   nsurf = (struct native_surface *)
765      util_hash_table_get(dri2dpy->surfaces, (void *) drawable);
766   if (!nsurf)
767      return;
768
769   dri2surf = dri2_surface(nsurf);
770
771   dri2surf->server_stamp++;
772   dri2dpy->event_handler->invalid_surface(&dri2dpy->base,
773         &dri2surf->base, dri2surf->server_stamp);
774}
775
776/**
777 * Initialize DRI2 and pipe screen.
778 */
779static boolean
780dri2_display_init_screen(struct native_display *ndpy)
781{
782   struct dri2_display *dri2dpy = dri2_display(ndpy);
783   int fd;
784
785   if (!x11_screen_support(dri2dpy->xscr, X11_SCREEN_EXTENSION_DRI2) ||
786       !x11_screen_support(dri2dpy->xscr, X11_SCREEN_EXTENSION_GLX)) {
787      _eglLog(_EGL_WARNING, "GLX/DRI2 is not supported");
788      return FALSE;
789   }
790
791   dri2dpy->dri_driver = x11_screen_probe_dri2(dri2dpy->xscr,
792         &dri2dpy->dri_major, &dri2dpy->dri_minor);
793
794   fd = x11_screen_enable_dri2(dri2dpy->xscr,
795         dri2_display_invalidate_buffers, &dri2dpy->base);
796   if (fd < 0)
797      return FALSE;
798
799   dri2dpy->base.screen =
800      dri2dpy->event_handler->new_drm_screen(&dri2dpy->base,
801            dri2dpy->dri_driver, fd);
802   if (!dri2dpy->base.screen) {
803      _eglLog(_EGL_DEBUG, "failed to create DRM screen");
804      return FALSE;
805   }
806
807   return TRUE;
808}
809
810static unsigned
811dri2_display_hash_table_hash(void *key)
812{
813   XID drawable = pointer_to_uintptr(key);
814   return (unsigned) drawable;
815}
816
817static int
818dri2_display_hash_table_compare(void *key1, void *key2)
819{
820   return ((char *) key1 - (char *) key2);
821}
822
823static int
824dri2_display_authenticate(void *user_data, uint32_t magic)
825{
826   struct native_display *ndpy = user_data;
827   struct dri2_display *dri2dpy = dri2_display(ndpy);
828
829   return x11_screen_authenticate(dri2dpy->xscr, magic);
830}
831
832#ifdef HAVE_WAYLAND_BACKEND
833
834static struct wayland_drm_callbacks wl_drm_callbacks = {
835   dri2_display_authenticate,
836   egl_g3d_wl_drm_helper_reference_buffer,
837   egl_g3d_wl_drm_helper_unreference_buffer
838};
839
840static boolean
841dri2_display_bind_wayland_display(struct native_display *ndpy,
842                                  struct wl_display *wl_dpy)
843{
844   struct dri2_display *dri2dpy = dri2_display(ndpy);
845
846   if (dri2dpy->wl_server_drm)
847      return FALSE;
848
849   dri2dpy->wl_server_drm = wayland_drm_init(wl_dpy,
850         x11_screen_get_device_name(dri2dpy->xscr),
851         &wl_drm_callbacks, ndpy);
852
853   if (!dri2dpy->wl_server_drm)
854      return FALSE;
855
856   return TRUE;
857}
858
859static boolean
860dri2_display_unbind_wayland_display(struct native_display *ndpy,
861                                    struct wl_display *wl_dpy)
862{
863   struct dri2_display *dri2dpy = dri2_display(ndpy);
864
865   if (!dri2dpy->wl_server_drm)
866      return FALSE;
867
868   wayland_drm_uninit(dri2dpy->wl_server_drm);
869   dri2dpy->wl_server_drm = NULL;
870
871   return TRUE;
872}
873
874static struct native_display_wayland_bufmgr dri2_display_wayland_bufmgr = {
875   dri2_display_bind_wayland_display,
876   dri2_display_unbind_wayland_display,
877   egl_g3d_wl_drm_common_wl_buffer_get_resource
878};
879
880#endif /* HAVE_WAYLAND_BACKEND */
881
882struct native_display *
883x11_create_dri2_display(Display *dpy,
884                        const struct native_event_handler *event_handler)
885{
886   struct dri2_display *dri2dpy;
887
888   dri2dpy = CALLOC_STRUCT(dri2_display);
889   if (!dri2dpy)
890      return NULL;
891
892   dri2dpy->event_handler = event_handler;
893
894   dri2dpy->dpy = dpy;
895   if (!dri2dpy->dpy) {
896      dri2dpy->dpy = XOpenDisplay(NULL);
897      if (!dri2dpy->dpy) {
898         dri2_display_destroy(&dri2dpy->base);
899         return NULL;
900      }
901      dri2dpy->own_dpy = TRUE;
902   }
903
904   dri2dpy->xscr_number = DefaultScreen(dri2dpy->dpy);
905   dri2dpy->xscr = x11_screen_create(dri2dpy->dpy, dri2dpy->xscr_number);
906   if (!dri2dpy->xscr) {
907      dri2_display_destroy(&dri2dpy->base);
908      return NULL;
909   }
910
911   dri2dpy->surfaces = util_hash_table_create(dri2_display_hash_table_hash,
912         dri2_display_hash_table_compare);
913   if (!dri2dpy->surfaces) {
914      dri2_display_destroy(&dri2dpy->base);
915      return NULL;
916   }
917
918   dri2dpy->base.init_screen = dri2_display_init_screen;
919   dri2dpy->base.destroy = dri2_display_destroy;
920   dri2dpy->base.get_param = dri2_display_get_param;
921   dri2dpy->base.get_configs = dri2_display_get_configs;
922   dri2dpy->base.get_pixmap_format = dri2_display_get_pixmap_format;
923   dri2dpy->base.copy_to_pixmap = native_display_copy_to_pixmap;
924   dri2dpy->base.create_window_surface = dri2_display_create_window_surface;
925   dri2dpy->base.create_pixmap_surface = dri2_display_create_pixmap_surface;
926#ifdef HAVE_WAYLAND_BACKEND
927   dri2dpy->base.wayland_bufmgr = &dri2_display_wayland_bufmgr;
928#endif
929
930   return &dri2dpy->base;
931}
932
933#else /* GLX_DIRECT_RENDERING */
934
935struct native_display *
936x11_create_dri2_display(Display *dpy,
937                        const struct native_event_handler *event_handler)
938{
939   return NULL;
940}
941
942#endif /* GLX_DIRECT_RENDERING */
943