dri2.c revision a3cde50effbc469379bf5d4d69d03464de43fb29 
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
56   dri2InvalidateDrawable(dPriv);
57   drawable->dPriv->lastStamp = *drawable->dPriv->pStamp;
58
59   p_atomic_inc(&drawable->base.stamp);
60}
61
62static const __DRI2flushExtension dri2FlushExtension = {
63    { __DRI2_FLUSH, __DRI2_FLUSH_VERSION },
64    dri2_flush_drawable,
65    dri2_invalidate_drawable,
66};
67
68/**
69 * Retrieve __DRIbuffer from the DRI loader.
70 */
71static __DRIbuffer *
72dri2_drawable_get_buffers(struct dri_drawable *drawable,
73                          const enum st_attachment_type *statts,
74                          unsigned *count)
75{
76   __DRIdrawable *dri_drawable = drawable->dPriv;
77   struct __DRIdri2LoaderExtensionRec *loader = drawable->sPriv->dri2.loader;
78   boolean with_format;
79   __DRIbuffer *buffers;
80   int num_buffers;
81   unsigned attachments[10];
82   unsigned num_attachments, i;
83
84   assert(loader);
85   with_format = dri_with_format(drawable->sPriv);
86
87   num_attachments = 0;
88
89   /* for Xserver 1.6.0 (DRI2 version 1) we always need to ask for the front */
90   if (!with_format)
91      attachments[num_attachments++] = __DRI_BUFFER_FRONT_LEFT;
92
93   for (i = 0; i < *count; i++) {
94      enum pipe_format format;
95      unsigned bind;
96      int att, bpp;
97
98      dri_drawable_get_format(drawable, statts[i], &format, &bind);
99      if (format == PIPE_FORMAT_NONE)
100         continue;
101
102      switch (statts[i]) {
103      case ST_ATTACHMENT_FRONT_LEFT:
104         /* already added */
105         if (!with_format)
106            continue;
107         att = __DRI_BUFFER_FRONT_LEFT;
108         break;
109      case ST_ATTACHMENT_BACK_LEFT:
110         att = __DRI_BUFFER_BACK_LEFT;
111         break;
112      case ST_ATTACHMENT_FRONT_RIGHT:
113         att = __DRI_BUFFER_FRONT_RIGHT;
114         break;
115      case ST_ATTACHMENT_BACK_RIGHT:
116         att = __DRI_BUFFER_BACK_RIGHT;
117         break;
118      case ST_ATTACHMENT_DEPTH_STENCIL:
119         att = __DRI_BUFFER_DEPTH_STENCIL;
120         break;
121      default:
122         att = -1;
123         break;
124      }
125
126      bpp = util_format_get_blocksizebits(format);
127
128      if (att >= 0) {
129         attachments[num_attachments++] = att;
130         if (with_format) {
131            attachments[num_attachments++] = bpp;
132         }
133      }
134   }
135
136   if (with_format) {
137      num_attachments /= 2;
138      buffers = loader->getBuffersWithFormat(dri_drawable,
139            &dri_drawable->w, &dri_drawable->h,
140            attachments, num_attachments,
141            &num_buffers, dri_drawable->loaderPrivate);
142   }
143   else {
144      buffers = loader->getBuffers(dri_drawable,
145            &dri_drawable->w, &dri_drawable->h,
146            attachments, num_attachments,
147            &num_buffers, dri_drawable->loaderPrivate);
148   }
149
150   if (buffers) {
151      /* set one cliprect to cover the whole dri_drawable */
152      dri_drawable->x = 0;
153      dri_drawable->y = 0;
154      dri_drawable->backX = 0;
155      dri_drawable->backY = 0;
156      dri_drawable->numClipRects = 1;
157      dri_drawable->pClipRects[0].x1 = 0;
158      dri_drawable->pClipRects[0].y1 = 0;
159      dri_drawable->pClipRects[0].x2 = dri_drawable->w;
160      dri_drawable->pClipRects[0].y2 = dri_drawable->h;
161      dri_drawable->numBackClipRects = 1;
162      dri_drawable->pBackClipRects[0].x1 = 0;
163      dri_drawable->pBackClipRects[0].y1 = 0;
164      dri_drawable->pBackClipRects[0].x2 = dri_drawable->w;
165      dri_drawable->pBackClipRects[0].y2 = dri_drawable->h;
166
167      *count = num_buffers;
168   }
169
170   return buffers;
171}
172
173/**
174 * Process __DRIbuffer and convert them into pipe_resources.
175 */
176static void
177dri2_drawable_process_buffers(struct dri_drawable *drawable,
178                              __DRIbuffer *buffers, unsigned count)
179{
180   struct dri_screen *screen = dri_screen(drawable->sPriv);
181   __DRIdrawable *dri_drawable = drawable->dPriv;
182   struct pipe_resource templ;
183   struct winsys_handle whandle;
184   boolean have_depth = FALSE;
185   unsigned i, bind;
186
187   if (drawable->old_num == count &&
188       drawable->old_w == dri_drawable->w &&
189       drawable->old_h == dri_drawable->h &&
190       memcmp(drawable->old, buffers, sizeof(__DRIbuffer) * count) == 0)
191      return;
192
193   for (i = 0; i < ST_ATTACHMENT_COUNT; i++)
194      pipe_resource_reference(&drawable->textures[i], NULL);
195
196   memset(&templ, 0, sizeof(templ));
197   templ.target = screen->target;
198   templ.last_level = 0;
199   templ.width0 = dri_drawable->w;
200   templ.height0 = dri_drawable->h;
201   templ.depth0 = 1;
202   templ.array_size = 1;
203
204   memset(&whandle, 0, sizeof(whandle));
205
206   for (i = 0; i < count; i++) {
207      __DRIbuffer *buf = &buffers[i];
208      enum st_attachment_type statt;
209      enum pipe_format format;
210
211      switch (buf->attachment) {
212      case __DRI_BUFFER_FRONT_LEFT:
213         if (!screen->auto_fake_front) {
214            statt = ST_ATTACHMENT_INVALID;
215            break;
216         }
217         /* fallthrough */
218      case __DRI_BUFFER_FAKE_FRONT_LEFT:
219         statt = ST_ATTACHMENT_FRONT_LEFT;
220         break;
221      case __DRI_BUFFER_BACK_LEFT:
222         statt = ST_ATTACHMENT_BACK_LEFT;
223         break;
224      case __DRI_BUFFER_DEPTH:
225      case __DRI_BUFFER_DEPTH_STENCIL:
226      case __DRI_BUFFER_STENCIL:
227         /* use only the first depth/stencil buffer */
228         if (!have_depth) {
229            have_depth = TRUE;
230            statt = ST_ATTACHMENT_DEPTH_STENCIL;
231         }
232         else {
233            statt = ST_ATTACHMENT_INVALID;
234         }
235         break;
236      default:
237         statt = ST_ATTACHMENT_INVALID;
238         break;
239      }
240
241      dri_drawable_get_format(drawable, statt, &format, &bind);
242      if (statt == ST_ATTACHMENT_INVALID || format == PIPE_FORMAT_NONE)
243         continue;
244
245      templ.format = format;
246      templ.bind = bind;
247      whandle.handle = buf->name;
248      whandle.stride = buf->pitch;
249
250      drawable->textures[statt] =
251         screen->base.screen->resource_from_handle(screen->base.screen,
252               &templ, &whandle);
253   }
254
255   drawable->old_num = count;
256   drawable->old_w = dri_drawable->w;
257   drawable->old_h = dri_drawable->h;
258   memcpy(drawable->old, buffers, sizeof(__DRIbuffer) * count);
259}
260
261static __DRIbuffer *
262dri2_allocate_buffer(__DRIscreen *sPriv,
263                     unsigned attachment, unsigned format,
264                     int width, int height)
265{
266   struct dri_screen *screen = dri_screen(sPriv);
267   struct dri2_buffer *buffer;
268   struct pipe_resource templ;
269   enum st_attachment_type statt;
270   enum pipe_format pf;
271   unsigned bind = 0;
272   struct winsys_handle whandle;
273
274   switch (attachment) {
275      case __DRI_BUFFER_FRONT_LEFT:
276      case __DRI_BUFFER_FAKE_FRONT_LEFT:
277         statt = ST_ATTACHMENT_FRONT_LEFT;
278         bind = PIPE_BIND_RENDER_TARGET | PIPE_BIND_SAMPLER_VIEW;
279         break;
280      case __DRI_BUFFER_BACK_LEFT:
281         statt = ST_ATTACHMENT_BACK_LEFT;
282         bind = PIPE_BIND_RENDER_TARGET | PIPE_BIND_SAMPLER_VIEW;
283         break;
284      case __DRI_BUFFER_DEPTH:
285      case __DRI_BUFFER_DEPTH_STENCIL:
286      case __DRI_BUFFER_STENCIL:
287            statt = ST_ATTACHMENT_DEPTH_STENCIL;
288            bind = PIPE_BIND_DEPTH_STENCIL; /* XXX sampler? */
289         break;
290      default:
291         statt = ST_ATTACHMENT_INVALID;
292         break;
293   }
294
295   switch (format) {
296      case 32:
297         pf = PIPE_FORMAT_B8G8R8X8_UNORM;
298         break;
299      case 16:
300         pf = PIPE_FORMAT_Z16_UNORM;
301         break;
302      default:
303         return NULL;
304   }
305
306   buffer = CALLOC_STRUCT(dri2_buffer);
307   if (!buffer)
308      return NULL;
309
310   memset(&templ, 0, sizeof(templ));
311   templ.bind = bind;
312   templ.format = pf;
313   templ.target = PIPE_TEXTURE_2D;
314   templ.last_level = 0;
315   templ.width0 = width;
316   templ.height0 = height;
317   templ.depth0 = 1;
318   templ.array_size = 1;
319
320   buffer->resource =
321      screen->base.screen->resource_create(screen->base.screen, &templ);
322   if (!buffer->resource)
323      return NULL;
324
325   memset(&whandle, 0, sizeof(whandle));
326   whandle.type = DRM_API_HANDLE_TYPE_SHARED;
327   screen->base.screen->resource_get_handle(screen->base.screen,
328         buffer->resource, &whandle);
329
330   buffer->base.attachment = attachment;
331   buffer->base.name = whandle.handle;
332   buffer->base.cpp = util_format_get_blocksize(pf);
333   buffer->base.pitch = whandle.stride;
334
335   return &buffer->base;
336}
337
338static void
339dri2_release_buffer(__DRIscreen *sPriv, __DRIbuffer *bPriv)
340{
341   struct dri2_buffer *buffer = dri2_buffer(bPriv);
342
343   pipe_resource_reference(&buffer->resource, NULL);
344   FREE(buffer);
345}
346
347/*
348 * Backend functions for st_framebuffer interface.
349 */
350
351static void
352dri2_allocate_textures(struct dri_drawable *drawable,
353                       const enum st_attachment_type *statts,
354                       unsigned count)
355{
356   __DRIbuffer *buffers;
357   unsigned num_buffers = count;
358
359   buffers = dri2_drawable_get_buffers(drawable, statts, &num_buffers);
360   if (buffers)
361      dri2_drawable_process_buffers(drawable, buffers, num_buffers);
362}
363
364static void
365dri2_flush_frontbuffer(struct dri_drawable *drawable,
366                       enum st_attachment_type statt)
367{
368   __DRIdrawable *dri_drawable = drawable->dPriv;
369   struct __DRIdri2LoaderExtensionRec *loader = drawable->sPriv->dri2.loader;
370
371   if (loader->flushFrontBuffer == NULL)
372      return;
373
374   if (statt == ST_ATTACHMENT_FRONT_LEFT) {
375      loader->flushFrontBuffer(dri_drawable, dri_drawable->loaderPrivate);
376   }
377}
378
379static __DRIimage *
380dri2_lookup_egl_image(struct dri_screen *screen, void *handle)
381{
382   __DRIimageLookupExtension *loader = screen->sPriv->dri2.image;
383   __DRIimage *img;
384
385   if (!loader->lookupEGLImage)
386      return NULL;
387
388   img = loader->lookupEGLImage(screen->sPriv,
389				handle, screen->sPriv->loaderPrivate);
390
391   return img;
392}
393
394static __DRIimage *
395dri2_create_image_from_name(__DRIscreen *_screen,
396                            int width, int height, int format,
397                            int name, int pitch, void *loaderPrivate)
398{
399   struct dri_screen *screen = dri_screen(_screen);
400   __DRIimage *img;
401   struct pipe_resource templ;
402   struct winsys_handle whandle;
403   unsigned tex_usage;
404   enum pipe_format pf;
405
406   tex_usage = PIPE_BIND_RENDER_TARGET | PIPE_BIND_SAMPLER_VIEW;
407
408   switch (format) {
409   case __DRI_IMAGE_FORMAT_RGB565:
410      pf = PIPE_FORMAT_B5G6R5_UNORM;
411      break;
412   case __DRI_IMAGE_FORMAT_XRGB8888:
413      pf = PIPE_FORMAT_B8G8R8X8_UNORM;
414      break;
415   case __DRI_IMAGE_FORMAT_ARGB8888:
416      pf = PIPE_FORMAT_B8G8R8A8_UNORM;
417      break;
418   default:
419      pf = PIPE_FORMAT_NONE;
420      break;
421   }
422   if (pf == PIPE_FORMAT_NONE)
423      return NULL;
424
425   img = CALLOC_STRUCT(__DRIimageRec);
426   if (!img)
427      return NULL;
428
429   memset(&templ, 0, sizeof(templ));
430   templ.bind = tex_usage;
431   templ.format = pf;
432   templ.target = screen->target;
433   templ.last_level = 0;
434   templ.width0 = width;
435   templ.height0 = height;
436   templ.depth0 = 1;
437   templ.array_size = 1;
438
439   memset(&whandle, 0, sizeof(whandle));
440   whandle.handle = name;
441   whandle.stride = pitch * util_format_get_blocksize(pf);
442
443   img->texture = screen->base.screen->resource_from_handle(screen->base.screen,
444         &templ, &whandle);
445   if (!img->texture) {
446      FREE(img);
447      return NULL;
448   }
449
450   img->level = 0;
451   img->layer = 0;
452   img->loader_private = loaderPrivate;
453
454   return img;
455}
456
457static __DRIimage *
458dri2_create_image_from_renderbuffer(__DRIcontext *context,
459				    int renderbuffer, void *loaderPrivate)
460{
461   struct dri_context *ctx = dri_context(context);
462
463   if (!ctx->st->get_resource_for_egl_image)
464      return NULL;
465
466   /* TODO */
467   return NULL;
468}
469
470static __DRIimage *
471dri2_create_image(__DRIscreen *_screen,
472                   int width, int height, int format,
473                   unsigned int use, void *loaderPrivate)
474{
475   struct dri_screen *screen = dri_screen(_screen);
476   __DRIimage *img;
477   struct pipe_resource templ;
478   unsigned tex_usage;
479   enum pipe_format pf;
480
481   tex_usage = PIPE_BIND_RENDER_TARGET | PIPE_BIND_SAMPLER_VIEW;
482   if (use & __DRI_IMAGE_USE_SCANOUT)
483      tex_usage |= PIPE_BIND_SCANOUT;
484   if (use & __DRI_IMAGE_USE_SHARE)
485      tex_usage |= PIPE_BIND_SHARED;
486   if (use & __DRI_IMAGE_USE_CURSOR) {
487      if (width != 64 || height != 64)
488         return NULL;
489      tex_usage |= PIPE_BIND_CURSOR;
490   }
491
492   switch (format) {
493   case __DRI_IMAGE_FORMAT_RGB565:
494      pf = PIPE_FORMAT_B5G6R5_UNORM;
495      break;
496   case __DRI_IMAGE_FORMAT_XRGB8888:
497      pf = PIPE_FORMAT_B8G8R8X8_UNORM;
498      break;
499   case __DRI_IMAGE_FORMAT_ARGB8888:
500      pf = PIPE_FORMAT_B8G8R8A8_UNORM;
501      break;
502   default:
503      pf = PIPE_FORMAT_NONE;
504      break;
505   }
506   if (pf == PIPE_FORMAT_NONE)
507      return NULL;
508
509   img = CALLOC_STRUCT(__DRIimageRec);
510   if (!img)
511      return NULL;
512
513   memset(&templ, 0, sizeof(templ));
514   templ.bind = tex_usage;
515   templ.format = pf;
516   templ.target = PIPE_TEXTURE_2D;
517   templ.last_level = 0;
518   templ.width0 = width;
519   templ.height0 = height;
520   templ.depth0 = 1;
521   templ.array_size = 1;
522
523   img->texture = screen->base.screen->resource_create(screen->base.screen, &templ);
524   if (!img->texture) {
525      FREE(img);
526      return NULL;
527   }
528
529   img->level = 0;
530   img->layer = 0;
531
532   img->loader_private = loaderPrivate;
533   return img;
534}
535
536static GLboolean
537dri2_query_image(__DRIimage *image, int attrib, int *value)
538{
539   struct winsys_handle whandle;
540   memset(&whandle, 0, sizeof(whandle));
541
542   switch (attrib) {
543   case __DRI_IMAGE_ATTRIB_STRIDE:
544      image->texture->screen->resource_get_handle(image->texture->screen,
545            image->texture, &whandle);
546      *value = whandle.stride;
547      return GL_TRUE;
548   case __DRI_IMAGE_ATTRIB_HANDLE:
549      whandle.type = DRM_API_HANDLE_TYPE_KMS;
550      image->texture->screen->resource_get_handle(image->texture->screen,
551         image->texture, &whandle);
552      *value = whandle.handle;
553      return GL_TRUE;
554   case __DRI_IMAGE_ATTRIB_NAME:
555      whandle.type = DRM_API_HANDLE_TYPE_SHARED;
556      image->texture->screen->resource_get_handle(image->texture->screen,
557         image->texture, &whandle);
558      *value = whandle.handle;
559      return GL_TRUE;
560   default:
561      return GL_FALSE;
562   }
563}
564
565static __DRIimage *
566dri2_dup_image(__DRIimage *image, void *loaderPrivate)
567{
568   __DRIimage *img;
569
570   img = CALLOC_STRUCT(__DRIimageRec);
571   if (!img)
572      return NULL;
573
574   img->texture = NULL;
575   pipe_resource_reference(&img->texture, image->texture);
576   img->level = image->level;
577   img->layer = image->layer;
578   img->loader_private = loaderPrivate;
579
580   return img;
581}
582
583static void
584dri2_destroy_image(__DRIimage *img)
585{
586   pipe_resource_reference(&img->texture, NULL);
587   FREE(img);
588}
589
590static struct __DRIimageExtensionRec dri2ImageExtension = {
591    { __DRI_IMAGE, __DRI_IMAGE_VERSION },
592    dri2_create_image_from_name,
593    dri2_create_image_from_renderbuffer,
594    dri2_destroy_image,
595    dri2_create_image,
596    dri2_query_image,
597    dri2_dup_image,
598};
599
600/*
601 * Backend function init_screen.
602 */
603
604static const __DRIextension *dri_screen_extensions[] = {
605   &driReadDrawableExtension,
606   &driCopySubBufferExtension.base,
607   &driSwapControlExtension.base,
608   &driMediaStreamCounterExtension.base,
609   &driTexBufferExtension.base,
610   &dri2FlushExtension.base,
611   &dri2ImageExtension.base,
612   &dri2ConfigQueryExtension.base,
613   NULL
614};
615
616/**
617 * This is the driver specific part of the createNewScreen entry point.
618 *
619 * Returns the struct gl_config supported by this driver.
620 */
621static const __DRIconfig **
622dri2_init_screen(__DRIscreen * sPriv)
623{
624   const __DRIconfig **configs;
625   struct dri_screen *screen;
626   struct pipe_screen *pscreen;
627
628   screen = CALLOC_STRUCT(dri_screen);
629   if (!screen)
630      return NULL;
631
632   screen->sPriv = sPriv;
633   screen->fd = sPriv->fd;
634
635   sPriv->private = (void *)screen;
636   sPriv->extensions = dri_screen_extensions;
637
638   pscreen = driver_descriptor.create_screen(screen->fd);
639   /* dri_init_screen_helper checks pscreen for us */
640
641   configs = dri_init_screen_helper(screen, pscreen, 32);
642   if (!configs)
643      goto fail;
644
645   sPriv->api_mask = 0;
646   if (screen->st_api->profile_mask & ST_PROFILE_DEFAULT_MASK)
647      sPriv->api_mask |= 1 << __DRI_API_OPENGL;
648   if (screen->st_api->profile_mask & ST_PROFILE_OPENGL_ES1_MASK)
649      sPriv->api_mask |= 1 << __DRI_API_GLES;
650   if (screen->st_api->profile_mask & ST_PROFILE_OPENGL_ES2_MASK)
651      sPriv->api_mask |= 1 << __DRI_API_GLES2;
652
653   screen->auto_fake_front = dri_with_format(sPriv);
654   screen->broken_invalidate = !sPriv->dri2.useInvalidate;
655   screen->lookup_egl_image = dri2_lookup_egl_image;
656
657   return configs;
658fail:
659   dri_destroy_screen_helper(screen);
660   FREE(screen);
661   return NULL;
662}
663
664static boolean
665dri2_create_buffer(__DRIscreen * sPriv,
666                   __DRIdrawable * dPriv,
667                   const struct gl_config * visual, boolean isPixmap)
668{
669   struct dri_drawable *drawable = NULL;
670
671   if (!dri_create_buffer(sPriv, dPriv, visual, isPixmap))
672      return FALSE;
673
674   drawable = dPriv->driverPrivate;
675
676   drawable->allocate_textures = dri2_allocate_textures;
677   drawable->flush_frontbuffer = dri2_flush_frontbuffer;
678
679   return TRUE;
680}
681
682/**
683 * DRI driver virtual function table.
684 *
685 * DRI versions differ in their implementation of init_screen and swap_buffers.
686 */
687const struct __DriverAPIRec driDriverAPI = {
688   .InitScreen = NULL,
689   .InitScreen2 = dri2_init_screen,
690   .DestroyScreen = dri_destroy_screen,
691   .CreateContext = dri_create_context,
692   .DestroyContext = dri_destroy_context,
693   .CreateBuffer = dri2_create_buffer,
694   .DestroyBuffer = dri_destroy_buffer,
695   .MakeCurrent = dri_make_current,
696   .UnbindContext = dri_unbind_context,
697
698   .GetSwapInfo = NULL,
699   .GetDrawableMSC = NULL,
700   .WaitForMSC = NULL,
701
702   .SwapBuffers = NULL,
703   .CopySubBuffer = NULL,
704
705   .AllocateBuffer = dri2_allocate_buffer,
706   .ReleaseBuffer  = dri2_release_buffer,
707};
708
709/* This is the table of extensions that the loader will dlsym() for. */
710PUBLIC const __DRIextension *__driDriverExtensions[] = {
711    &driCoreExtension.base,
712    &driLegacyExtension.base,
713    &driDRI2Extension.base,
714    NULL
715};
716
717/* vim: set sw=3 ts=8 sts=3 expandtab: */
718