native_dri2.c revision 870a9d643b1f256e6a379d96a325284dd2f7eeea 
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_api.h"
36#include "egllog.h"
37
38#include "native_x11.h"
39#include "x11_screen.h"
40
41enum dri2_surface_type {
42   DRI2_SURFACE_TYPE_WINDOW,
43   DRI2_SURFACE_TYPE_PIXMAP,
44};
45
46struct dri2_display {
47   struct native_display base;
48   Display *dpy;
49   boolean own_dpy;
50
51   struct native_event_handler *event_handler;
52
53   struct drm_api *api;
54   struct x11_screen *xscr;
55   int xscr_number;
56   const char *dri_driver;
57   int dri_major, dri_minor;
58
59   struct dri2_config *configs;
60   int num_configs;
61
62   struct util_hash_table *surfaces;
63};
64
65struct dri2_surface {
66   struct native_surface base;
67   Drawable drawable;
68   enum dri2_surface_type type;
69   enum pipe_format color_format;
70   struct dri2_display *dri2dpy;
71
72   unsigned int server_stamp;
73   unsigned int client_stamp;
74   int width, height;
75   struct pipe_resource *textures[NUM_NATIVE_ATTACHMENTS];
76   uint valid_mask;
77
78   boolean have_back, have_fake;
79
80   struct x11_drawable_buffer *last_xbufs;
81   int last_num_xbufs;
82};
83
84struct dri2_config {
85   struct native_config base;
86};
87
88static INLINE struct dri2_display *
89dri2_display(const struct native_display *ndpy)
90{
91   return (struct dri2_display *) ndpy;
92}
93
94static INLINE struct dri2_surface *
95dri2_surface(const struct native_surface *nsurf)
96{
97   return (struct dri2_surface *) nsurf;
98}
99
100static INLINE struct dri2_config *
101dri2_config(const struct native_config *nconf)
102{
103   return (struct dri2_config *) nconf;
104}
105
106/**
107 * Process the buffers returned by the server.
108 */
109static void
110dri2_surface_process_drawable_buffers(struct native_surface *nsurf,
111                                      struct x11_drawable_buffer *xbufs,
112                                      int num_xbufs)
113{
114   struct dri2_surface *dri2surf = dri2_surface(nsurf);
115   struct dri2_display *dri2dpy = dri2surf->dri2dpy;
116   struct pipe_resource templ;
117   struct winsys_handle whandle;
118   uint valid_mask;
119   int i;
120
121   /* free the old textures */
122   for (i = 0; i < NUM_NATIVE_ATTACHMENTS; i++)
123      pipe_resource_reference(&dri2surf->textures[i], NULL);
124   dri2surf->valid_mask = 0x0;
125
126   dri2surf->have_back = FALSE;
127   dri2surf->have_fake = FALSE;
128
129   if (!xbufs)
130      return;
131
132   memset(&templ, 0, sizeof(templ));
133   templ.target = PIPE_TEXTURE_2D;
134   templ.last_level = 0;
135   templ.width0 = dri2surf->width;
136   templ.height0 = dri2surf->height;
137   templ.depth0 = 1;
138   templ.format = dri2surf->color_format;
139   templ.bind = PIPE_BIND_RENDER_TARGET;
140
141   valid_mask = 0x0;
142   for (i = 0; i < num_xbufs; i++) {
143      struct x11_drawable_buffer *xbuf = &xbufs[i];
144      const char *desc;
145      enum native_attachment natt;
146
147      switch (xbuf->attachment) {
148      case DRI2BufferFrontLeft:
149         natt = NATIVE_ATTACHMENT_FRONT_LEFT;
150         desc = "DRI2 Front Buffer";
151         break;
152      case DRI2BufferFakeFrontLeft:
153         natt = NATIVE_ATTACHMENT_FRONT_LEFT;
154         desc = "DRI2 Fake Front Buffer";
155         dri2surf->have_fake = TRUE;
156         break;
157      case DRI2BufferBackLeft:
158         natt = NATIVE_ATTACHMENT_BACK_LEFT;
159         desc = "DRI2 Back Buffer";
160         dri2surf->have_back = TRUE;
161         break;
162      default:
163         desc = NULL;
164         break;
165      }
166
167      if (!desc || dri2surf->textures[natt]) {
168         if (!desc)
169            _eglLog(_EGL_WARNING, "unknown buffer %d", xbuf->attachment);
170         else
171            _eglLog(_EGL_WARNING, "both real and fake front buffers are listed");
172         continue;
173      }
174
175      memset(&whandle, 0, sizeof(whandle));
176      whandle.stride = xbuf->pitch;
177      whandle.handle = xbuf->name;
178      dri2surf->textures[natt] = dri2dpy->base.screen->resource_from_handle(
179         dri2dpy->base.screen, &templ, &whandle);
180      if (dri2surf->textures[natt])
181         valid_mask |= 1 << natt;
182   }
183
184   dri2surf->valid_mask = valid_mask;
185}
186
187/**
188 * Get the buffers from the server.
189 */
190static void
191dri2_surface_get_buffers(struct native_surface *nsurf, uint buffer_mask)
192{
193   struct dri2_surface *dri2surf = dri2_surface(nsurf);
194   struct dri2_display *dri2dpy = dri2surf->dri2dpy;
195   unsigned int dri2atts[NUM_NATIVE_ATTACHMENTS];
196   int num_ins, num_outs, att;
197   struct x11_drawable_buffer *xbufs;
198
199   /* prepare the attachments */
200   num_ins = 0;
201   for (att = 0; att < NUM_NATIVE_ATTACHMENTS; att++) {
202      if (native_attachment_mask_test(buffer_mask, att)) {
203         unsigned int dri2att;
204
205         switch (att) {
206         case NATIVE_ATTACHMENT_FRONT_LEFT:
207            dri2att = DRI2BufferFrontLeft;
208            break;
209         case NATIVE_ATTACHMENT_BACK_LEFT:
210            dri2att = DRI2BufferBackLeft;
211            break;
212         case NATIVE_ATTACHMENT_FRONT_RIGHT:
213            dri2att = DRI2BufferFrontRight;
214            break;
215         case NATIVE_ATTACHMENT_BACK_RIGHT:
216            dri2att = DRI2BufferBackRight;
217            break;
218         default:
219            assert(0);
220            dri2att = 0;
221            break;
222         }
223
224         dri2atts[num_ins] = dri2att;
225         num_ins++;
226      }
227   }
228
229   xbufs = x11_drawable_get_buffers(dri2dpy->xscr, dri2surf->drawable,
230                                    &dri2surf->width, &dri2surf->height,
231                                    dri2atts, FALSE, num_ins, &num_outs);
232
233   /* we should be able to do better... */
234   if (xbufs && dri2surf->last_num_xbufs == num_outs &&
235       memcmp(dri2surf->last_xbufs, xbufs, sizeof(*xbufs) * num_outs) == 0) {
236      FREE(xbufs);
237      dri2surf->client_stamp = dri2surf->server_stamp;
238      return;
239   }
240
241   dri2_surface_process_drawable_buffers(&dri2surf->base, xbufs, num_outs);
242
243   dri2surf->server_stamp++;
244   dri2surf->client_stamp = dri2surf->server_stamp;
245
246   if (dri2surf->last_xbufs)
247      FREE(dri2surf->last_xbufs);
248   dri2surf->last_xbufs = xbufs;
249   dri2surf->last_num_xbufs = num_outs;
250}
251
252/**
253 * Update the buffers of the surface.  This is a slow function due to the
254 * round-trip to the server.
255 */
256static boolean
257dri2_surface_update_buffers(struct native_surface *nsurf, uint buffer_mask)
258{
259   struct dri2_surface *dri2surf = dri2_surface(nsurf);
260
261   dri2_surface_get_buffers(&dri2surf->base, buffer_mask);
262
263   return ((dri2surf->valid_mask & buffer_mask) == buffer_mask);
264}
265
266/**
267 * Return TRUE if the surface receives DRI2_InvalidateBuffers events.
268 */
269static INLINE boolean
270dri2_surface_receive_events(struct native_surface *nsurf)
271{
272   struct dri2_surface *dri2surf = dri2_surface(nsurf);
273   return (dri2surf->dri2dpy->dri_minor >= 3);
274}
275
276static boolean
277dri2_surface_flush_frontbuffer(struct native_surface *nsurf)
278{
279   struct dri2_surface *dri2surf = dri2_surface(nsurf);
280   struct dri2_display *dri2dpy = dri2surf->dri2dpy;
281
282   /* copy to real front buffer */
283   if (dri2surf->have_fake)
284      x11_drawable_copy_buffers(dri2dpy->xscr, dri2surf->drawable,
285            0, 0, dri2surf->width, dri2surf->height,
286            DRI2BufferFakeFrontLeft, DRI2BufferFrontLeft);
287
288   /* force buffers to be updated in next validation call */
289   if (!dri2_surface_receive_events(&dri2surf->base)) {
290      dri2surf->server_stamp++;
291      dri2dpy->event_handler->invalid_surface(&dri2dpy->base,
292            &dri2surf->base, dri2surf->server_stamp);
293   }
294
295   return TRUE;
296}
297
298static boolean
299dri2_surface_swap_buffers(struct native_surface *nsurf)
300{
301   struct dri2_surface *dri2surf = dri2_surface(nsurf);
302   struct dri2_display *dri2dpy = dri2surf->dri2dpy;
303
304   /* copy to front buffer */
305   if (dri2surf->have_back)
306      x11_drawable_copy_buffers(dri2dpy->xscr, dri2surf->drawable,
307            0, 0, dri2surf->width, dri2surf->height,
308            DRI2BufferBackLeft, DRI2BufferFrontLeft);
309
310   /* and update fake front buffer */
311   if (dri2surf->have_fake)
312      x11_drawable_copy_buffers(dri2dpy->xscr, dri2surf->drawable,
313            0, 0, dri2surf->width, dri2surf->height,
314            DRI2BufferFrontLeft, DRI2BufferFakeFrontLeft);
315
316   /* force buffers to be updated in next validation call */
317   if (!dri2_surface_receive_events(&dri2surf->base)) {
318      dri2surf->server_stamp++;
319      dri2dpy->event_handler->invalid_surface(&dri2dpy->base,
320            &dri2surf->base, dri2surf->server_stamp);
321   }
322
323   return TRUE;
324}
325
326static boolean
327dri2_surface_validate(struct native_surface *nsurf, uint attachment_mask,
328                      unsigned int *seq_num, struct pipe_resource **textures,
329                      int *width, int *height)
330{
331   struct dri2_surface *dri2surf = dri2_surface(nsurf);
332
333   if (dri2surf->server_stamp != dri2surf->client_stamp ||
334       (dri2surf->valid_mask & attachment_mask) != attachment_mask) {
335      if (!dri2_surface_update_buffers(&dri2surf->base, attachment_mask))
336         return FALSE;
337   }
338
339   if (seq_num)
340      *seq_num = dri2surf->client_stamp;
341
342   if (textures) {
343      int att;
344      for (att = 0; att < NUM_NATIVE_ATTACHMENTS; att++) {
345         if (native_attachment_mask_test(attachment_mask, att)) {
346            struct pipe_resource *ptex = dri2surf->textures[att];
347
348            textures[att] = NULL;
349            pipe_resource_reference(&textures[att], ptex);
350         }
351      }
352   }
353
354   if (width)
355      *width = dri2surf->width;
356   if (height)
357      *height = dri2surf->height;
358
359   return TRUE;
360}
361
362static void
363dri2_surface_wait(struct native_surface *nsurf)
364{
365   struct dri2_surface *dri2surf = dri2_surface(nsurf);
366   struct dri2_display *dri2dpy = dri2surf->dri2dpy;
367
368   if (dri2surf->have_fake) {
369      x11_drawable_copy_buffers(dri2dpy->xscr, dri2surf->drawable,
370            0, 0, dri2surf->width, dri2surf->height,
371            DRI2BufferFrontLeft, DRI2BufferFakeFrontLeft);
372   }
373}
374
375static void
376dri2_surface_destroy(struct native_surface *nsurf)
377{
378   struct dri2_surface *dri2surf = dri2_surface(nsurf);
379   int i;
380
381   if (dri2surf->last_xbufs)
382      FREE(dri2surf->last_xbufs);
383
384   for (i = 0; i < NUM_NATIVE_ATTACHMENTS; i++) {
385      struct pipe_resource *ptex = dri2surf->textures[i];
386      pipe_resource_reference(&ptex, NULL);
387   }
388
389   if (dri2surf->drawable) {
390      x11_drawable_enable_dri2(dri2surf->dri2dpy->xscr,
391            dri2surf->drawable, FALSE);
392
393      util_hash_table_remove(dri2surf->dri2dpy->surfaces,
394            (void *) dri2surf->drawable);
395   }
396   FREE(dri2surf);
397}
398
399static struct dri2_surface *
400dri2_display_create_surface(struct native_display *ndpy,
401                            enum dri2_surface_type type,
402                            Drawable drawable,
403                            const struct native_config *nconf)
404{
405   struct dri2_display *dri2dpy = dri2_display(ndpy);
406   struct dri2_config *dri2conf = dri2_config(nconf);
407   struct dri2_surface *dri2surf;
408
409   dri2surf = CALLOC_STRUCT(dri2_surface);
410   if (!dri2surf)
411      return NULL;
412
413   dri2surf->dri2dpy = dri2dpy;
414   dri2surf->type = type;
415   dri2surf->drawable = drawable;
416   dri2surf->color_format = dri2conf->base.color_format;
417
418   dri2surf->base.destroy = dri2_surface_destroy;
419   dri2surf->base.swap_buffers = dri2_surface_swap_buffers;
420   dri2surf->base.flush_frontbuffer = dri2_surface_flush_frontbuffer;
421   dri2surf->base.validate = dri2_surface_validate;
422   dri2surf->base.wait = dri2_surface_wait;
423
424   if (drawable) {
425      x11_drawable_enable_dri2(dri2dpy->xscr, drawable, TRUE);
426      /* initialize the geometry */
427      dri2_surface_update_buffers(&dri2surf->base, 0x0);
428
429      util_hash_table_set(dri2surf->dri2dpy->surfaces,
430            (void *) dri2surf->drawable, (void *) &dri2surf->base);
431   }
432
433   return dri2surf;
434}
435
436static struct native_surface *
437dri2_display_create_window_surface(struct native_display *ndpy,
438                                   EGLNativeWindowType win,
439                                   const struct native_config *nconf)
440{
441   struct dri2_surface *dri2surf;
442
443   dri2surf = dri2_display_create_surface(ndpy, DRI2_SURFACE_TYPE_WINDOW,
444         (Drawable) win, nconf);
445   return (dri2surf) ? &dri2surf->base : NULL;
446}
447
448static struct native_surface *
449dri2_display_create_pixmap_surface(struct native_display *ndpy,
450                                   EGLNativePixmapType pix,
451                                   const struct native_config *nconf)
452{
453   struct dri2_surface *dri2surf;
454
455   dri2surf = dri2_display_create_surface(ndpy, DRI2_SURFACE_TYPE_PIXMAP,
456         (Drawable) pix, nconf);
457   return (dri2surf) ? &dri2surf->base : NULL;
458}
459
460static int
461choose_color_format(const __GLcontextModes *mode, enum pipe_format formats[32])
462{
463   int count = 0;
464
465   switch (mode->rgbBits) {
466   case 32:
467      formats[count++] = PIPE_FORMAT_B8G8R8A8_UNORM;
468      formats[count++] = PIPE_FORMAT_A8R8G8B8_UNORM;
469      break;
470   case 24:
471      formats[count++] = PIPE_FORMAT_B8G8R8X8_UNORM;
472      formats[count++] = PIPE_FORMAT_X8R8G8B8_UNORM;
473      formats[count++] = PIPE_FORMAT_B8G8R8A8_UNORM;
474      formats[count++] = PIPE_FORMAT_A8R8G8B8_UNORM;
475      break;
476   case 16:
477      formats[count++] = PIPE_FORMAT_B5G6R5_UNORM;
478      break;
479   default:
480      break;
481   }
482
483   return count;
484}
485
486static boolean
487is_format_supported(struct pipe_screen *screen,
488                    enum pipe_format fmt, boolean is_color)
489{
490   return screen->is_format_supported(screen, fmt, PIPE_TEXTURE_2D,
491         (is_color) ? PIPE_BIND_RENDER_TARGET :
492         PIPE_BIND_DEPTH_STENCIL, 0);
493}
494
495static boolean
496dri2_display_convert_config(struct native_display *ndpy,
497                            const __GLcontextModes *mode,
498                            struct native_config *nconf)
499{
500   enum pipe_format formats[32];
501   int num_formats, i;
502
503   if (!(mode->renderType & GLX_RGBA_BIT) || !mode->rgbMode)
504      return FALSE;
505
506   /* skip single-buffered configs */
507   if (!mode->doubleBufferMode)
508      return FALSE;
509
510   /* only interested in native renderable configs */
511   if (!mode->xRenderable || !mode->drawableType)
512      return FALSE;
513
514   nconf->buffer_mask = 1 << NATIVE_ATTACHMENT_FRONT_LEFT;
515   if (mode->doubleBufferMode)
516      nconf->buffer_mask |= 1 << NATIVE_ATTACHMENT_BACK_LEFT;
517   if (mode->stereoMode) {
518      nconf->buffer_mask |= 1 << NATIVE_ATTACHMENT_FRONT_RIGHT;
519      if (mode->doubleBufferMode)
520         nconf->buffer_mask |= 1 << NATIVE_ATTACHMENT_BACK_RIGHT;
521   }
522
523   /* choose color format */
524   num_formats = choose_color_format(mode, formats);
525   for (i = 0; i < num_formats; i++) {
526      if (is_format_supported(ndpy->screen, formats[i], TRUE)) {
527         nconf->color_format = formats[i];
528         break;
529      }
530   }
531   if (nconf->color_format == PIPE_FORMAT_NONE)
532      return FALSE;
533
534   if (mode->drawableType & GLX_WINDOW_BIT)
535      nconf->window_bit = TRUE;
536   if (mode->drawableType & GLX_PIXMAP_BIT)
537      nconf->pixmap_bit = TRUE;
538
539   nconf->native_visual_id = mode->visualID;
540   nconf->native_visual_type = mode->visualType;
541   nconf->level = mode->level;
542   nconf->samples = mode->samples;
543
544   nconf->slow_config = (mode->visualRating == GLX_SLOW_CONFIG);
545
546   if (mode->transparentPixel == GLX_TRANSPARENT_RGB) {
547      nconf->transparent_rgb = TRUE;
548      nconf->transparent_rgb_values[0] = mode->transparentRed;
549      nconf->transparent_rgb_values[1] = mode->transparentGreen;
550      nconf->transparent_rgb_values[2] = mode->transparentBlue;
551   }
552
553   return TRUE;
554}
555
556static const struct native_config **
557dri2_display_get_configs(struct native_display *ndpy, int *num_configs)
558{
559   struct dri2_display *dri2dpy = dri2_display(ndpy);
560   const struct native_config **configs;
561   int i;
562
563   /* first time */
564   if (!dri2dpy->configs) {
565      const __GLcontextModes *modes;
566      int num_modes, count;
567
568      modes = x11_screen_get_glx_configs(dri2dpy->xscr);
569      if (!modes)
570         return NULL;
571      num_modes = x11_context_modes_count(modes);
572
573      dri2dpy->configs = CALLOC(num_modes, sizeof(*dri2dpy->configs));
574      if (!dri2dpy->configs)
575         return NULL;
576
577      count = 0;
578      for (i = 0; i < num_modes; i++) {
579         struct native_config *nconf = &dri2dpy->configs[count].base;
580         if (dri2_display_convert_config(&dri2dpy->base, modes, nconf))
581            count++;
582         modes = modes->next;
583      }
584
585      dri2dpy->num_configs = count;
586   }
587
588   configs = MALLOC(dri2dpy->num_configs * sizeof(*configs));
589   if (configs) {
590      for (i = 0; i < dri2dpy->num_configs; i++)
591         configs[i] = (const struct native_config *) &dri2dpy->configs[i];
592      if (num_configs)
593         *num_configs = dri2dpy->num_configs;
594   }
595
596   return configs;
597}
598
599static boolean
600dri2_display_is_pixmap_supported(struct native_display *ndpy,
601                                 EGLNativePixmapType pix,
602                                 const struct native_config *nconf)
603{
604   struct dri2_display *dri2dpy = dri2_display(ndpy);
605   uint depth, nconf_depth;
606
607   depth = x11_drawable_get_depth(dri2dpy->xscr, (Drawable) pix);
608   nconf_depth = util_format_get_blocksizebits(nconf->color_format);
609
610   /* simple depth match for now */
611   return (depth == nconf_depth || (depth == 24 && depth + 8 == nconf_depth));
612}
613
614static int
615dri2_display_get_param(struct native_display *ndpy,
616                       enum native_param_type param)
617{
618   int val;
619
620   switch (param) {
621   case NATIVE_PARAM_USE_NATIVE_BUFFER:
622      /* DRI2GetBuffers use the native buffers */
623      val = TRUE;
624      break;
625   default:
626      val = 0;
627      break;
628   }
629
630   return val;
631}
632
633static void
634dri2_display_destroy(struct native_display *ndpy)
635{
636   struct dri2_display *dri2dpy = dri2_display(ndpy);
637
638   if (dri2dpy->configs)
639      FREE(dri2dpy->configs);
640
641   if (dri2dpy->base.screen)
642      dri2dpy->base.screen->destroy(dri2dpy->base.screen);
643
644   if (dri2dpy->surfaces)
645      util_hash_table_destroy(dri2dpy->surfaces);
646
647   if (dri2dpy->xscr)
648      x11_screen_destroy(dri2dpy->xscr);
649   if (dri2dpy->own_dpy)
650      XCloseDisplay(dri2dpy->dpy);
651   if (dri2dpy->api && dri2dpy->api->destroy)
652      dri2dpy->api->destroy(dri2dpy->api);
653   FREE(dri2dpy);
654}
655
656static void
657dri2_display_invalidate_buffers(struct x11_screen *xscr, Drawable drawable,
658                                void *user_data)
659{
660   struct native_display *ndpy = (struct native_display* ) user_data;
661   struct dri2_display *dri2dpy = dri2_display(ndpy);
662   struct native_surface *nsurf;
663   struct dri2_surface *dri2surf;
664
665   nsurf = (struct native_surface *)
666      util_hash_table_get(dri2dpy->surfaces, (void *) drawable);
667   if (!nsurf)
668      return;
669
670   dri2surf = dri2_surface(nsurf);
671
672   dri2surf->server_stamp++;
673   dri2dpy->event_handler->invalid_surface(&dri2dpy->base,
674         &dri2surf->base, dri2surf->server_stamp);
675}
676
677/**
678 * Initialize DRI2 and pipe screen.
679 */
680static boolean
681dri2_display_init_screen(struct native_display *ndpy)
682{
683   struct dri2_display *dri2dpy = dri2_display(ndpy);
684   const char *driver = dri2dpy->api->name;
685   struct drm_create_screen_arg arg;
686   int fd;
687
688   if (!x11_screen_support(dri2dpy->xscr, X11_SCREEN_EXTENSION_DRI2) ||
689       !x11_screen_support(dri2dpy->xscr, X11_SCREEN_EXTENSION_GLX)) {
690      _eglLog(_EGL_WARNING, "GLX/DRI2 is not supported");
691      return FALSE;
692   }
693
694   dri2dpy->dri_driver = x11_screen_probe_dri2(dri2dpy->xscr,
695         &dri2dpy->dri_major, &dri2dpy->dri_minor);
696   if (!dri2dpy->dri_driver || !driver ||
697       strcmp(dri2dpy->dri_driver, driver) != 0) {
698      _eglLog(_EGL_WARNING, "Driver mismatch: %s != %s",
699            dri2dpy->dri_driver, dri2dpy->api->name);
700      return FALSE;
701   }
702
703   fd = x11_screen_enable_dri2(dri2dpy->xscr,
704         dri2_display_invalidate_buffers, &dri2dpy->base);
705   if (fd < 0)
706      return FALSE;
707
708   memset(&arg, 0, sizeof(arg));
709   arg.mode = DRM_CREATE_NORMAL;
710   dri2dpy->base.screen = dri2dpy->api->create_screen(dri2dpy->api, fd, &arg);
711   if (!dri2dpy->base.screen) {
712      _eglLog(_EGL_WARNING, "failed to create DRM screen");
713      return FALSE;
714   }
715
716   return TRUE;
717}
718
719static unsigned
720dri2_display_hash_table_hash(void *key)
721{
722   XID drawable = pointer_to_uintptr(key);
723   return (unsigned) drawable;
724}
725
726static int
727dri2_display_hash_table_compare(void *key1, void *key2)
728{
729   return (key1 - key2);
730}
731
732struct native_display *
733x11_create_dri2_display(EGLNativeDisplayType dpy,
734                        struct native_event_handler *event_handler,
735                        struct drm_api *api)
736{
737   struct dri2_display *dri2dpy;
738
739   dri2dpy = CALLOC_STRUCT(dri2_display);
740   if (!dri2dpy)
741      return NULL;
742
743   dri2dpy->event_handler = event_handler;
744   dri2dpy->api = api;
745
746   dri2dpy->dpy = dpy;
747   if (!dri2dpy->dpy) {
748      dri2dpy->dpy = XOpenDisplay(NULL);
749      if (!dri2dpy->dpy) {
750         dri2_display_destroy(&dri2dpy->base);
751         return NULL;
752      }
753      dri2dpy->own_dpy = TRUE;
754   }
755
756   dri2dpy->xscr_number = DefaultScreen(dri2dpy->dpy);
757   dri2dpy->xscr = x11_screen_create(dri2dpy->dpy, dri2dpy->xscr_number);
758   if (!dri2dpy->xscr) {
759      dri2_display_destroy(&dri2dpy->base);
760      return NULL;
761   }
762
763   if (!dri2_display_init_screen(&dri2dpy->base)) {
764      dri2_display_destroy(&dri2dpy->base);
765      return NULL;
766   }
767
768   dri2dpy->surfaces = util_hash_table_create(dri2_display_hash_table_hash,
769         dri2_display_hash_table_compare);
770   if (!dri2dpy->surfaces) {
771      dri2_display_destroy(&dri2dpy->base);
772      return NULL;
773   }
774
775   dri2dpy->base.destroy = dri2_display_destroy;
776   dri2dpy->base.get_param = dri2_display_get_param;
777   dri2dpy->base.get_configs = dri2_display_get_configs;
778   dri2dpy->base.is_pixmap_supported = dri2_display_is_pixmap_supported;
779   dri2dpy->base.create_window_surface = dri2_display_create_window_surface;
780   dri2dpy->base.create_pixmap_surface = dri2_display_create_pixmap_surface;
781
782   return &dri2dpy->base;
783}
784