dri2.c revision ea90eca44b790119f0d1fbe45cac120a374cb0ca 
1/*
2 * Mesa 3-D graphics library
3 * Version:  7.9
4 *
5 * Copyright 2009, VMware, Inc.
6 * All Rights Reserved.
7 * Copyright (C) 2010 LunarG Inc.
8 *
9 * Permission is hereby granted, free of charge, to any person obtaining a
10 * copy of this software and associated documentation files (the "Software"),
11 * to deal in the Software without restriction, including without limitation
12 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
13 * and/or sell copies of the Software, and to permit persons to whom the
14 * Software is furnished to do so, subject to the following conditions:
15 *
16 * The above copyright notice and this permission notice shall be included
17 * in all copies or substantial portions of the Software.
18 *
19 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
20 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
21 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
22 * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
23 * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
24 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
25 *
26 * Authors:
27 *    Keith Whitwell <keithw@vmware.com>
28 *    Jakob Bornecrantz <wallbraker@gmail.com>
29 *    Chia-I Wu <olv@lunarg.com>
30 */
31
32#include "util/u_memory.h"
33#include "util/u_inlines.h"
34#include "util/u_format.h"
35#include "util/u_debug.h"
36#include "state_tracker/drm_driver.h"
37
38#include "dri_screen.h"
39#include "dri_context.h"
40#include "dri_drawable.h"
41#include "dri2_buffer.h"
42
43/**
44 * DRI2 flush extension.
45 */
46static void
47dri2_flush_drawable(__DRIdrawable *draw)
48{
49}
50
51static void
52dri2_invalidate_drawable(__DRIdrawable *dPriv)
53{
54   struct dri_drawable *drawable = dri_drawable(dPriv);
55   struct dri_context *ctx = drawable->context;
56
57   dri2InvalidateDrawable(dPriv);
58   drawable->dPriv->lastStamp = *drawable->dPriv->pStamp;
59
60   if (ctx)
61      ctx->st->notify_invalid_framebuffer(ctx->st, &drawable->base);
62}
63
64static const __DRI2flushExtension dri2FlushExtension = {
65    { __DRI2_FLUSH, __DRI2_FLUSH_VERSION },
66    dri2_flush_drawable,
67    dri2_invalidate_drawable,
68};
69
70/**
71 * Retrieve __DRIbuffer from the DRI loader.
72 */
73static __DRIbuffer *
74dri2_drawable_get_buffers(struct dri_drawable *drawable,
75                          const enum st_attachment_type *statts,
76                          unsigned *count)
77{
78   __DRIdrawable *dri_drawable = drawable->dPriv;
79   struct __DRIdri2LoaderExtensionRec *loader = drawable->sPriv->dri2.loader;
80   boolean with_format;
81   __DRIbuffer *buffers;
82   int num_buffers;
83   unsigned attachments[10];
84   unsigned num_attachments, i;
85
86   assert(loader);
87   with_format = dri_with_format(drawable->sPriv);
88
89   num_attachments = 0;
90
91   /* for Xserver 1.6.0 (DRI2 version 1) we always need to ask for the front */
92   if (!with_format)
93      attachments[num_attachments++] = __DRI_BUFFER_FRONT_LEFT;
94
95   for (i = 0; i < *count; i++) {
96      enum pipe_format format;
97      unsigned bind;
98      int att, bpp;
99
100      dri_drawable_get_format(drawable, statts[i], &format, &bind);
101      if (format == PIPE_FORMAT_NONE)
102         continue;
103
104      switch (statts[i]) {
105      case ST_ATTACHMENT_FRONT_LEFT:
106         /* already added */
107         if (!with_format)
108            continue;
109         att = __DRI_BUFFER_FRONT_LEFT;
110         break;
111      case ST_ATTACHMENT_BACK_LEFT:
112         att = __DRI_BUFFER_BACK_LEFT;
113         break;
114      case ST_ATTACHMENT_FRONT_RIGHT:
115         att = __DRI_BUFFER_FRONT_RIGHT;
116         break;
117      case ST_ATTACHMENT_BACK_RIGHT:
118         att = __DRI_BUFFER_BACK_RIGHT;
119         break;
120      case ST_ATTACHMENT_DEPTH_STENCIL:
121         att = __DRI_BUFFER_DEPTH_STENCIL;
122         break;
123      default:
124         att = -1;
125         break;
126      }
127
128      bpp = util_format_get_blocksizebits(format);
129
130      if (att >= 0) {
131         attachments[num_attachments++] = att;
132         if (with_format) {
133            attachments[num_attachments++] = bpp;
134         }
135      }
136   }
137
138   if (with_format) {
139      num_attachments /= 2;
140      buffers = loader->getBuffersWithFormat(dri_drawable,
141            &dri_drawable->w, &dri_drawable->h,
142            attachments, num_attachments,
143            &num_buffers, dri_drawable->loaderPrivate);
144   }
145   else {
146      buffers = loader->getBuffers(dri_drawable,
147            &dri_drawable->w, &dri_drawable->h,
148            attachments, num_attachments,
149            &num_buffers, dri_drawable->loaderPrivate);
150   }
151
152   if (buffers) {
153      /* set one cliprect to cover the whole dri_drawable */
154      dri_drawable->x = 0;
155      dri_drawable->y = 0;
156      dri_drawable->backX = 0;
157      dri_drawable->backY = 0;
158      dri_drawable->numClipRects = 1;
159      dri_drawable->pClipRects[0].x1 = 0;
160      dri_drawable->pClipRects[0].y1 = 0;
161      dri_drawable->pClipRects[0].x2 = dri_drawable->w;
162      dri_drawable->pClipRects[0].y2 = dri_drawable->h;
163      dri_drawable->numBackClipRects = 1;
164      dri_drawable->pBackClipRects[0].x1 = 0;
165      dri_drawable->pBackClipRects[0].y1 = 0;
166      dri_drawable->pBackClipRects[0].x2 = dri_drawable->w;
167      dri_drawable->pBackClipRects[0].y2 = dri_drawable->h;
168
169      *count = num_buffers;
170   }
171
172   return buffers;
173}
174
175/**
176 * Process __DRIbuffer and convert them into pipe_resources.
177 */
178static void
179dri2_drawable_process_buffers(struct dri_drawable *drawable,
180                              __DRIbuffer *buffers, unsigned count)
181{
182   struct dri_screen *screen = dri_screen(drawable->sPriv);
183   __DRIdrawable *dri_drawable = drawable->dPriv;
184   struct pipe_resource templ;
185   struct winsys_handle whandle;
186   boolean have_depth = FALSE;
187   unsigned i, bind;
188
189   if (drawable->old_num == count &&
190       drawable->old_w == dri_drawable->w &&
191       drawable->old_h == dri_drawable->h &&
192       memcmp(drawable->old, buffers, sizeof(__DRIbuffer) * count) == 0)
193      return;
194
195   for (i = 0; i < ST_ATTACHMENT_COUNT; i++)
196      pipe_resource_reference(&drawable->textures[i], NULL);
197
198   memset(&templ, 0, sizeof(templ));
199   templ.target = screen->target;
200   templ.last_level = 0;
201   templ.width0 = dri_drawable->w;
202   templ.height0 = dri_drawable->h;
203   templ.depth0 = 1;
204   templ.array_size = 1;
205
206   memset(&whandle, 0, sizeof(whandle));
207
208   for (i = 0; i < count; i++) {
209      __DRIbuffer *buf = &buffers[i];
210      enum st_attachment_type statt;
211      enum pipe_format format;
212
213      switch (buf->attachment) {
214      case __DRI_BUFFER_FRONT_LEFT:
215         if (!screen->auto_fake_front) {
216            statt = ST_ATTACHMENT_INVALID;
217            break;
218         }
219         /* fallthrough */
220      case __DRI_BUFFER_FAKE_FRONT_LEFT:
221         statt = ST_ATTACHMENT_FRONT_LEFT;
222         break;
223      case __DRI_BUFFER_BACK_LEFT:
224         statt = ST_ATTACHMENT_BACK_LEFT;
225         break;
226      case __DRI_BUFFER_DEPTH:
227      case __DRI_BUFFER_DEPTH_STENCIL:
228      case __DRI_BUFFER_STENCIL:
229         /* use only the first depth/stencil buffer */
230         if (!have_depth) {
231            have_depth = TRUE;
232            statt = ST_ATTACHMENT_DEPTH_STENCIL;
233         }
234         else {
235            statt = ST_ATTACHMENT_INVALID;
236         }
237         break;
238      default:
239         statt = ST_ATTACHMENT_INVALID;
240         break;
241      }
242
243      dri_drawable_get_format(drawable, statt, &format, &bind);
244      if (statt == ST_ATTACHMENT_INVALID || format == PIPE_FORMAT_NONE)
245         continue;
246
247      templ.format = format;
248      templ.bind = bind;
249      whandle.handle = buf->name;
250      whandle.stride = buf->pitch;
251
252      drawable->textures[statt] =
253         screen->base.screen->resource_from_handle(screen->base.screen,
254               &templ, &whandle);
255   }
256
257   drawable->old_num = count;
258   drawable->old_w = dri_drawable->w;
259   drawable->old_h = dri_drawable->h;
260   memcpy(drawable->old, buffers, sizeof(__DRIbuffer) * count);
261}
262
263static __DRIbuffer *
264dri2_allocate_buffer(__DRIscreen *sPriv,
265                     unsigned attachment, unsigned format,
266                     int width, int height)
267{
268   struct dri_screen *screen = dri_screen(sPriv);
269   struct dri2_buffer *buffer;
270   struct pipe_resource templ;
271   enum st_attachment_type statt;
272   enum pipe_format pf;
273   unsigned bind = 0;
274   struct winsys_handle whandle;
275
276   switch (attachment) {
277      case __DRI_BUFFER_FRONT_LEFT:
278      case __DRI_BUFFER_FAKE_FRONT_LEFT:
279         statt = ST_ATTACHMENT_FRONT_LEFT;
280         bind = PIPE_BIND_RENDER_TARGET | PIPE_BIND_SAMPLER_VIEW;
281         break;
282      case __DRI_BUFFER_BACK_LEFT:
283         statt = ST_ATTACHMENT_BACK_LEFT;
284         bind = PIPE_BIND_RENDER_TARGET | PIPE_BIND_SAMPLER_VIEW;
285         break;
286      case __DRI_BUFFER_DEPTH:
287      case __DRI_BUFFER_DEPTH_STENCIL:
288      case __DRI_BUFFER_STENCIL:
289            statt = ST_ATTACHMENT_DEPTH_STENCIL;
290            bind = PIPE_BIND_DEPTH_STENCIL; /* XXX sampler? */
291         break;
292      default:
293         statt = ST_ATTACHMENT_INVALID;
294         break;
295   }
296
297   switch (format) {
298      case 32:
299         pf = PIPE_FORMAT_B8G8R8X8_UNORM;
300         break;
301      case 16:
302         pf = PIPE_FORMAT_Z16_UNORM;
303         break;
304      default:
305         return NULL;
306   }
307
308   buffer = CALLOC_STRUCT(dri2_buffer);
309   if (!buffer)
310      return NULL;
311
312   memset(&templ, 0, sizeof(templ));
313   templ.bind = bind;
314   templ.format = pf;
315   templ.target = PIPE_TEXTURE_2D;
316   templ.last_level = 0;
317   templ.width0 = width;
318   templ.height0 = height;
319   templ.depth0 = 1;
320   templ.array_size = 1;
321
322   buffer->resource =
323      screen->base.screen->resource_create(screen->base.screen, &templ);
324   if (!buffer->resource)
325      return NULL;
326
327   memset(&whandle, 0, sizeof(whandle));
328   whandle.type = DRM_API_HANDLE_TYPE_SHARED;
329   screen->base.screen->resource_get_handle(screen->base.screen,
330         buffer->resource, &whandle);
331
332   buffer->base.attachment = attachment;
333   buffer->base.name = whandle.handle;
334   buffer->base.cpp = util_format_get_blocksize(pf);
335   buffer->base.pitch = whandle.stride;
336
337   return &buffer->base;
338}
339
340static void
341dri2_release_buffer(__DRIscreen *sPriv, __DRIbuffer *bPriv)
342{
343   struct dri2_buffer *buffer = dri2_buffer(bPriv);
344
345   pipe_resource_reference(&buffer->resource, NULL);
346   FREE(buffer);
347}
348
349/*
350 * Backend functions for st_framebuffer interface.
351 */
352
353static void
354dri2_allocate_textures(struct dri_drawable *drawable,
355                       const enum st_attachment_type *statts,
356                       unsigned count)
357{
358   __DRIbuffer *buffers;
359   unsigned num_buffers = count;
360
361   buffers = dri2_drawable_get_buffers(drawable, statts, &num_buffers);
362   if (buffers)
363      dri2_drawable_process_buffers(drawable, buffers, num_buffers);
364}
365
366static void
367dri2_flush_frontbuffer(struct dri_drawable *drawable,
368                       enum st_attachment_type statt)
369{
370   __DRIdrawable *dri_drawable = drawable->dPriv;
371   struct __DRIdri2LoaderExtensionRec *loader = drawable->sPriv->dri2.loader;
372
373   if (loader->flushFrontBuffer == NULL)
374      return;
375
376   if (statt == ST_ATTACHMENT_FRONT_LEFT) {
377      loader->flushFrontBuffer(dri_drawable, dri_drawable->loaderPrivate);
378   }
379}
380
381static __DRIimage *
382dri2_lookup_egl_image(struct dri_screen *screen, void *handle)
383{
384   __DRIimageLookupExtension *loader = screen->sPriv->dri2.image;
385   __DRIimage *img;
386
387   if (!loader->lookupEGLImage)
388      return NULL;
389
390   img = loader->lookupEGLImage(screen->sPriv,
391				handle, screen->sPriv->loaderPrivate);
392
393   return img;
394}
395
396static __DRIimage *
397dri2_create_image_from_name(__DRIscreen *_screen,
398                            int width, int height, int format,
399                            int name, int pitch, void *loaderPrivate)
400{
401   struct dri_screen *screen = dri_screen(_screen);
402   __DRIimage *img;
403   struct pipe_resource templ;
404   struct winsys_handle whandle;
405   unsigned tex_usage;
406   enum pipe_format pf;
407
408   tex_usage = PIPE_BIND_RENDER_TARGET | PIPE_BIND_SAMPLER_VIEW;
409
410   switch (format) {
411   case __DRI_IMAGE_FORMAT_RGB565:
412      pf = PIPE_FORMAT_B5G6R5_UNORM;
413      break;
414   case __DRI_IMAGE_FORMAT_XRGB8888:
415      pf = PIPE_FORMAT_B8G8R8X8_UNORM;
416      break;
417   case __DRI_IMAGE_FORMAT_ARGB8888:
418      pf = PIPE_FORMAT_B8G8R8A8_UNORM;
419      break;
420   default:
421      pf = PIPE_FORMAT_NONE;
422      break;
423   }
424   if (pf == PIPE_FORMAT_NONE)
425      return NULL;
426
427   img = CALLOC_STRUCT(__DRIimageRec);
428   if (!img)
429      return NULL;
430
431   memset(&templ, 0, sizeof(templ));
432   templ.bind = tex_usage;
433   templ.format = pf;
434   templ.target = screen->target;
435   templ.last_level = 0;
436   templ.width0 = width;
437   templ.height0 = height;
438   templ.depth0 = 1;
439   templ.array_size = 1;
440
441   memset(&whandle, 0, sizeof(whandle));
442   whandle.handle = name;
443   whandle.stride = pitch * util_format_get_blocksize(pf);
444
445   img->texture = screen->base.screen->resource_from_handle(screen->base.screen,
446         &templ, &whandle);
447   if (!img->texture) {
448      FREE(img);
449      return NULL;
450   }
451
452   img->level = 0;
453   img->layer = 0;
454   img->loader_private = loaderPrivate;
455
456   return img;
457}
458
459static __DRIimage *
460dri2_create_image_from_renderbuffer(__DRIcontext *context,
461				    int renderbuffer, void *loaderPrivate)
462{
463   struct dri_context *ctx = dri_context(context);
464
465   if (!ctx->st->get_resource_for_egl_image)
466      return NULL;
467
468   /* TODO */
469   return NULL;
470}
471
472static __DRIimage *
473dri2_create_image(__DRIscreen *_screen,
474                   int width, int height, int format,
475                   unsigned int use, void *loaderPrivate)
476{
477   struct dri_screen *screen = dri_screen(_screen);
478   __DRIimage *img;
479   struct pipe_resource templ;
480   unsigned tex_usage;
481   enum pipe_format pf;
482
483   tex_usage = PIPE_BIND_RENDER_TARGET | PIPE_BIND_SAMPLER_VIEW;
484   if (use & __DRI_IMAGE_USE_SCANOUT)
485      tex_usage |= PIPE_BIND_SCANOUT;
486   if (use & __DRI_IMAGE_USE_SHARE)
487      tex_usage |= PIPE_BIND_SHARED;
488   if (use & __DRI_IMAGE_USE_CURSOR) {
489      if (width != 64 || height != 64)
490         return NULL;
491      tex_usage |= PIPE_BIND_CURSOR;
492   }
493
494   switch (format) {
495   case __DRI_IMAGE_FORMAT_RGB565:
496      pf = PIPE_FORMAT_B5G6R5_UNORM;
497      break;
498   case __DRI_IMAGE_FORMAT_XRGB8888:
499      pf = PIPE_FORMAT_B8G8R8X8_UNORM;
500      break;
501   case __DRI_IMAGE_FORMAT_ARGB8888:
502      pf = PIPE_FORMAT_B8G8R8A8_UNORM;
503      break;
504   default:
505      pf = PIPE_FORMAT_NONE;
506      break;
507   }
508   if (pf == PIPE_FORMAT_NONE)
509      return NULL;
510
511   img = CALLOC_STRUCT(__DRIimageRec);
512   if (!img)
513      return NULL;
514
515   memset(&templ, 0, sizeof(templ));
516   templ.bind = tex_usage;
517   templ.format = pf;
518   templ.target = PIPE_TEXTURE_2D;
519   templ.last_level = 0;
520   templ.width0 = width;
521   templ.height0 = height;
522   templ.depth0 = 1;
523   templ.array_size = 1;
524
525   img->texture = screen->base.screen->resource_create(screen->base.screen, &templ);
526   if (!img->texture) {
527      FREE(img);
528      return NULL;
529   }
530
531   img->level = 0;
532   img->layer = 0;
533
534   img->loader_private = loaderPrivate;
535   return img;
536}
537
538static GLboolean
539dri2_query_image(__DRIimage *image, int attrib, int *value)
540{
541   struct winsys_handle whandle;
542   memset(&whandle, 0, sizeof(whandle));
543
544   switch (attrib) {
545   case __DRI_IMAGE_ATTRIB_STRIDE:
546      image->texture->screen->resource_get_handle(image->texture->screen,
547            image->texture, &whandle);
548      *value = whandle.stride;
549      return GL_TRUE;
550   case __DRI_IMAGE_ATTRIB_HANDLE:
551      whandle.type = DRM_API_HANDLE_TYPE_KMS;
552      image->texture->screen->resource_get_handle(image->texture->screen,
553         image->texture, &whandle);
554      *value = whandle.handle;
555      return GL_TRUE;
556   case __DRI_IMAGE_ATTRIB_NAME:
557      whandle.type = DRM_API_HANDLE_TYPE_SHARED;
558      image->texture->screen->resource_get_handle(image->texture->screen,
559         image->texture, &whandle);
560      *value = whandle.handle;
561      return GL_TRUE;
562   default:
563      return GL_FALSE;
564   }
565}
566
567static void
568dri2_destroy_image(__DRIimage *img)
569{
570   pipe_resource_reference(&img->texture, NULL);
571   FREE(img);
572}
573
574static struct __DRIimageExtensionRec dri2ImageExtension = {
575    { __DRI_IMAGE, __DRI_IMAGE_VERSION },
576    dri2_create_image_from_name,
577    dri2_create_image_from_renderbuffer,
578    dri2_destroy_image,
579    dri2_create_image,
580    dri2_query_image,
581};
582
583/*
584 * Backend function init_screen.
585 */
586
587static const __DRIextension *dri_screen_extensions[] = {
588   &driReadDrawableExtension,
589   &driCopySubBufferExtension.base,
590   &driSwapControlExtension.base,
591   &driMediaStreamCounterExtension.base,
592   &driTexBufferExtension.base,
593   &dri2FlushExtension.base,
594   &dri2ImageExtension.base,
595   &dri2ConfigQueryExtension.base,
596   NULL
597};
598
599/**
600 * This is the driver specific part of the createNewScreen entry point.
601 *
602 * Returns the struct gl_config supported by this driver.
603 */
604static const __DRIconfig **
605dri2_init_screen(__DRIscreen * sPriv)
606{
607   const __DRIconfig **configs;
608   struct dri_screen *screen;
609   struct pipe_screen *pscreen;
610
611   screen = CALLOC_STRUCT(dri_screen);
612   if (!screen)
613      return NULL;
614
615   screen->sPriv = sPriv;
616   screen->fd = sPriv->fd;
617
618   sPriv->private = (void *)screen;
619   sPriv->extensions = dri_screen_extensions;
620
621   pscreen = driver_descriptor.create_screen(screen->fd);
622   /* dri_init_screen_helper checks pscreen for us */
623
624   configs = dri_init_screen_helper(screen, pscreen, 32);
625   if (!configs)
626      goto fail;
627
628   sPriv->api_mask = 0;
629   if (screen->st_api->profile_mask & ST_PROFILE_DEFAULT_MASK)
630      sPriv->api_mask |= 1 << __DRI_API_OPENGL;
631   if (screen->st_api->profile_mask & ST_PROFILE_OPENGL_ES1_MASK)
632      sPriv->api_mask |= 1 << __DRI_API_GLES;
633   if (screen->st_api->profile_mask & ST_PROFILE_OPENGL_ES2_MASK)
634      sPriv->api_mask |= 1 << __DRI_API_GLES2;
635
636   screen->auto_fake_front = dri_with_format(sPriv);
637   screen->broken_invalidate = !sPriv->dri2.useInvalidate;
638   screen->lookup_egl_image = dri2_lookup_egl_image;
639
640   return configs;
641fail:
642   dri_destroy_screen_helper(screen);
643   FREE(screen);
644   return NULL;
645}
646
647static boolean
648dri2_create_context(gl_api api, const struct gl_config * visual,
649                    __DRIcontext * cPriv, void *sharedContextPrivate)
650{
651   struct dri_context *ctx = NULL;
652
653   if (!dri_create_context(api, visual, cPriv, sharedContextPrivate))
654      return FALSE;
655
656   ctx = cPriv->driverPrivate;
657
658   return TRUE;
659}
660
661static boolean
662dri2_create_buffer(__DRIscreen * sPriv,
663                   __DRIdrawable * dPriv,
664                   const struct gl_config * visual, boolean isPixmap)
665{
666   struct dri_drawable *drawable = NULL;
667
668   if (!dri_create_buffer(sPriv, dPriv, visual, isPixmap))
669      return FALSE;
670
671   drawable = dPriv->driverPrivate;
672
673   drawable->allocate_textures = dri2_allocate_textures;
674   drawable->flush_frontbuffer = dri2_flush_frontbuffer;
675
676   return TRUE;
677}
678
679/**
680 * DRI driver virtual function table.
681 *
682 * DRI versions differ in their implementation of init_screen and swap_buffers.
683 */
684const struct __DriverAPIRec driDriverAPI = {
685   .InitScreen = NULL,
686   .InitScreen2 = dri2_init_screen,
687   .DestroyScreen = dri_destroy_screen,
688   .CreateContext = dri2_create_context,
689   .DestroyContext = dri_destroy_context,
690   .CreateBuffer = dri2_create_buffer,
691   .DestroyBuffer = dri_destroy_buffer,
692   .MakeCurrent = dri_make_current,
693   .UnbindContext = dri_unbind_context,
694
695   .GetSwapInfo = NULL,
696   .GetDrawableMSC = NULL,
697   .WaitForMSC = NULL,
698
699   .SwapBuffers = NULL,
700   .CopySubBuffer = NULL,
701
702   .AllocateBuffer = dri2_allocate_buffer,
703   .ReleaseBuffer  = dri2_release_buffer,
704};
705
706/* This is the table of extensions that the loader will dlsym() for. */
707PUBLIC const __DRIextension *__driDriverExtensions[] = {
708    &driCoreExtension.base,
709    &driLegacyExtension.base,
710    &driDRI2Extension.base,
711    NULL
712};
713
714/* vim: set sw=3 ts=8 sts=3 expandtab: */
715