dri2_glx.c revision 0a18cdb0ed2f4b747688f653d9947d174fae77ff 
1/*
2 * Copyright © 2008 Red Hat, Inc.
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Soft-
6 * ware"), to deal in the Software without restriction, including without
7 * limitation the rights to use, copy, modify, merge, publish, distribute,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, provided that the above copyright
10 * notice(s) and this permission notice appear in all copies of the Soft-
11 * ware and that both the above copyright notice(s) and this permission
12 * notice appear in supporting documentation.
13 *
14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
15 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABIL-
16 * ITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY
17 * RIGHTS. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR HOLDERS INCLUDED IN
18 * THIS NOTICE BE LIABLE FOR ANY CLAIM, OR ANY SPECIAL INDIRECT OR CONSE-
19 * QUENTIAL DAMAGES, OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
20 * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
21 * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFOR-
22 * MANCE OF THIS SOFTWARE.
23 *
24 * Except as contained in this notice, the name of a copyright holder shall
25 * not be used in advertising or otherwise to promote the sale, use or
26 * other dealings in this Software without prior written authorization of
27 * the copyright holder.
28 *
29 * Authors:
30 *   Kristian Høgsberg (krh@redhat.com)
31 */
32
33#ifdef GLX_DIRECT_RENDERING
34
35#include <X11/Xlib.h>
36#include <X11/extensions/Xfixes.h>
37#include <X11/extensions/Xdamage.h>
38#include "glapi.h"
39#include "glxclient.h"
40#include <X11/extensions/dri2proto.h>
41#include "xf86dri.h"
42#include <dlfcn.h>
43#include <fcntl.h>
44#include <unistd.h>
45#include <sys/types.h>
46#include <sys/mman.h>
47#include "xf86drm.h"
48#include "dri2.h"
49#include "dri_common.h"
50#include "../../mesa/drivers/dri/common/dri_util.h"
51
52#undef DRI2_MINOR
53#define DRI2_MINOR 1
54
55typedef struct __GLXDRIdisplayPrivateRec __GLXDRIdisplayPrivate;
56typedef struct __GLXDRIcontextPrivateRec __GLXDRIcontextPrivate;
57typedef struct __GLXDRIdrawablePrivateRec __GLXDRIdrawablePrivate;
58
59struct __GLXDRIdisplayPrivateRec
60{
61   __GLXDRIdisplay base;
62
63   /*
64    ** XFree86-DRI version information
65    */
66   int driMajor;
67   int driMinor;
68   int driPatch;
69   int swapAvailable;
70   int invalidateAvailable;
71};
72
73struct __GLXDRIcontextPrivateRec
74{
75   __GLXDRIcontext base;
76   __DRIcontext *driContext;
77   __GLXscreenConfigs *psc;
78};
79
80struct __GLXDRIdrawablePrivateRec
81{
82   __GLXDRIdrawable base;
83   __DRIbuffer buffers[5];
84   int bufferCount;
85   int width, height;
86   int have_back;
87   int have_fake_front;
88   int swap_interval;
89};
90
91static void dri2WaitX(__GLXDRIdrawable * pdraw);
92
93static void
94dri2DestroyContext(__GLXDRIcontext * context,
95                   __GLXscreenConfigs * psc, Display * dpy)
96{
97   __GLXDRIcontextPrivate *pcp = (__GLXDRIcontextPrivate *) context;
98   const __DRIcoreExtension *core = pcp->psc->core;
99
100   (*core->destroyContext) (pcp->driContext);
101
102   Xfree(pcp);
103}
104
105static Bool
106dri2BindContext(__GLXDRIcontext * context,
107                __GLXDRIdrawable * draw, __GLXDRIdrawable * read)
108{
109   __GLXDRIcontextPrivate *pcp = (__GLXDRIcontextPrivate *) context;
110   const __DRIcoreExtension *core = pcp->psc->core;
111
112   return (*core->bindContext) (pcp->driContext,
113                                draw->driDrawable, read->driDrawable);
114}
115
116static void
117dri2UnbindContext(__GLXDRIcontext * context)
118{
119   __GLXDRIcontextPrivate *pcp = (__GLXDRIcontextPrivate *) context;
120   const __DRIcoreExtension *core = pcp->psc->core;
121
122   (*core->unbindContext) (pcp->driContext);
123}
124
125static __GLXDRIcontext *
126dri2CreateContext(__GLXscreenConfigs * psc,
127                  const __GLcontextModes * mode,
128                  GLXContext gc, GLXContext shareList, int renderType)
129{
130   __GLXDRIcontextPrivate *pcp, *pcp_shared;
131   __GLXDRIconfigPrivate *config = (__GLXDRIconfigPrivate *) mode;
132   __DRIcontext *shared = NULL;
133
134   if (shareList) {
135      pcp_shared = (__GLXDRIcontextPrivate *) shareList->driContext;
136      shared = pcp_shared->driContext;
137   }
138
139   pcp = Xmalloc(sizeof *pcp);
140   if (pcp == NULL)
141      return NULL;
142
143   pcp->psc = psc;
144   pcp->driContext =
145      (*psc->dri2->createNewContext) (psc->__driScreen,
146                                      config->driConfig, shared, pcp);
147   gc->__driContext = pcp->driContext;
148
149   if (pcp->driContext == NULL) {
150      Xfree(pcp);
151      return NULL;
152   }
153
154   pcp->base.destroyContext = dri2DestroyContext;
155   pcp->base.bindContext = dri2BindContext;
156   pcp->base.unbindContext = dri2UnbindContext;
157
158   return &pcp->base;
159}
160
161static void
162dri2DestroyDrawable(__GLXDRIdrawable * pdraw)
163{
164   const __DRIcoreExtension *core = pdraw->psc->core;
165
166   (*core->destroyDrawable) (pdraw->driDrawable);
167   DRI2DestroyDrawable(pdraw->psc->dpy, pdraw->xDrawable);
168   Xfree(pdraw);
169}
170
171static __GLXDRIdrawable *
172dri2CreateDrawable(__GLXscreenConfigs * psc,
173                   XID xDrawable,
174                   GLXDrawable drawable, const __GLcontextModes * modes)
175{
176   __GLXDRIdrawablePrivate *pdraw;
177   __GLXDRIconfigPrivate *config = (__GLXDRIconfigPrivate *) modes;
178   __GLXdisplayPrivate *dpyPriv;
179   __GLXDRIdisplayPrivate *pdp;
180
181   pdraw = Xmalloc(sizeof(*pdraw));
182   if (!pdraw)
183      return NULL;
184
185   pdraw->base.destroyDrawable = dri2DestroyDrawable;
186   pdraw->base.xDrawable = xDrawable;
187   pdraw->base.drawable = drawable;
188   pdraw->base.psc = psc;
189   pdraw->bufferCount = 0;
190   pdraw->swap_interval = 1;
191
192   DRI2CreateDrawable(psc->dpy, xDrawable);
193
194   dpyPriv = __glXInitialize(psc->dpy);
195   pdp = (__GLXDRIdisplayPrivate *)dpyPriv->dri2Display;;
196   /* Create a new drawable */
197   pdraw->base.driDrawable =
198      (*psc->dri2->createNewDrawable) (psc->__driScreen,
199                                       config->driConfig, pdraw);
200
201   if (!pdraw->base.driDrawable) {
202      DRI2DestroyDrawable(psc->dpy, xDrawable);
203      Xfree(pdraw);
204      return NULL;
205   }
206
207   /*
208    * Make sure server has the same swap interval we do for the new
209    * drawable.
210    */
211   if (pdp->swapAvailable)
212      DRI2SwapInterval(psc->dpy, xDrawable, pdraw->swap_interval);
213
214   return &pdraw->base;
215}
216
217#ifdef X_DRI2GetMSC
218
219static int
220dri2DrawableGetMSC(__GLXscreenConfigs *psc, __GLXDRIdrawable *pdraw,
221		   int64_t *ust, int64_t *msc, int64_t *sbc)
222{
223   return DRI2GetMSC(psc->dpy, pdraw->xDrawable, ust, msc, sbc);
224}
225
226#endif
227
228
229#ifdef X_DRI2WaitMSC
230
231static int
232dri2WaitForMSC(__GLXDRIdrawable *pdraw, int64_t target_msc, int64_t divisor,
233	       int64_t remainder, int64_t *ust, int64_t *msc, int64_t *sbc)
234{
235   return DRI2WaitMSC(pdraw->psc->dpy, pdraw->xDrawable, target_msc, divisor,
236		      remainder, ust, msc, sbc);
237}
238
239static int
240dri2WaitForSBC(__GLXDRIdrawable *pdraw, int64_t target_sbc, int64_t *ust,
241	       int64_t *msc, int64_t *sbc)
242{
243   return DRI2WaitSBC(pdraw->psc->dpy, pdraw->xDrawable, target_sbc, ust, msc,
244		      sbc);
245}
246
247#endif /* X_DRI2WaitMSC */
248
249static void
250dri2CopySubBuffer(__GLXDRIdrawable *pdraw, int x, int y, int width, int height)
251{
252   __GLXDRIdrawablePrivate *priv = (__GLXDRIdrawablePrivate *) pdraw;
253   XRectangle xrect;
254   XserverRegion region;
255
256   /* Check we have the right attachments */
257   if (!priv->have_back)
258      return;
259
260   xrect.x = x;
261   xrect.y = priv->height - y - height;
262   xrect.width = width;
263   xrect.height = height;
264
265#ifdef __DRI2_FLUSH
266   if (pdraw->psc->f)
267      (*pdraw->psc->f->flush) (pdraw->driDrawable);
268#endif
269
270   region = XFixesCreateRegion(pdraw->psc->dpy, &xrect, 1);
271   /* should get a fence ID back from here at some point */
272   DRI2CopyRegion(pdraw->psc->dpy, pdraw->xDrawable, region,
273                  DRI2BufferFrontLeft, DRI2BufferBackLeft);
274   XFixesDestroyRegion(pdraw->psc->dpy, region);
275
276   /* Refresh the fake front (if present) after we just damaged the real
277    * front.
278    */
279   dri2WaitX(pdraw);
280}
281
282static void
283dri2WaitX(__GLXDRIdrawable *pdraw)
284{
285   __GLXDRIdrawablePrivate *priv = (__GLXDRIdrawablePrivate *) pdraw;
286   XRectangle xrect;
287   XserverRegion region;
288
289   /* Check we have the right attachments */
290   if (!priv->have_fake_front)
291      return;
292
293   xrect.x = 0;
294   xrect.y = 0;
295   xrect.width = priv->width;
296   xrect.height = priv->height;
297
298#ifdef __DRI2_FLUSH
299   if (pdraw->psc->f)
300      (*pdraw->psc->f->flush) (pdraw->driDrawable);
301#endif
302
303   region = XFixesCreateRegion(pdraw->psc->dpy, &xrect, 1);
304   DRI2CopyRegion(pdraw->psc->dpy, pdraw->xDrawable, region,
305                  DRI2BufferFakeFrontLeft, DRI2BufferFrontLeft);
306   XFixesDestroyRegion(pdraw->psc->dpy, region);
307}
308
309static void
310dri2WaitGL(__GLXDRIdrawable * pdraw)
311{
312   __GLXDRIdrawablePrivate *priv = (__GLXDRIdrawablePrivate *) pdraw;
313   XRectangle xrect;
314   XserverRegion region;
315
316   if (!priv->have_fake_front)
317      return;
318
319   xrect.x = 0;
320   xrect.y = 0;
321   xrect.width = priv->width;
322   xrect.height = priv->height;
323
324#ifdef __DRI2_FLUSH
325   if (pdraw->psc->f)
326      (*pdraw->psc->f->flush) (pdraw->driDrawable);
327#endif
328
329   region = XFixesCreateRegion(pdraw->psc->dpy, &xrect, 1);
330   DRI2CopyRegion(pdraw->psc->dpy, pdraw->xDrawable, region,
331                  DRI2BufferFrontLeft, DRI2BufferFakeFrontLeft);
332   XFixesDestroyRegion(pdraw->psc->dpy, region);
333}
334
335static void
336dri2FlushFrontBuffer(__DRIdrawable *driDrawable, void *loaderPrivate)
337{
338   __GLXDRIdrawablePrivate *pdraw = loaderPrivate;
339   __GLXdisplayPrivate *priv = __glXInitialize(pdraw->base.psc->dpy);
340   __GLXDRIdisplayPrivate *pdp = (__GLXDRIdisplayPrivate *)priv->dri2Display;
341
342   /* Old servers don't send invalidate events */
343   if (!pdp->invalidateAvailable)
344       dri2InvalidateBuffers(priv->dpy, pdraw->base.drawable);
345
346   dri2WaitGL(loaderPrivate);
347}
348
349
350static void
351dri2DestroyScreen(__GLXscreenConfigs * psc)
352{
353   /* Free the direct rendering per screen data */
354   (*psc->core->destroyScreen) (psc->__driScreen);
355   close(psc->fd);
356   psc->__driScreen = NULL;
357}
358
359/**
360 * Process list of buffer received from the server
361 *
362 * Processes the list of buffers received in a reply from the server to either
363 * \c DRI2GetBuffers or \c DRI2GetBuffersWithFormat.
364 */
365static void
366process_buffers(__GLXDRIdrawablePrivate * pdraw, DRI2Buffer * buffers,
367                unsigned count)
368{
369   int i;
370
371   pdraw->bufferCount = count;
372   pdraw->have_fake_front = 0;
373   pdraw->have_back = 0;
374
375   /* This assumes the DRI2 buffer attachment tokens matches the
376    * __DRIbuffer tokens. */
377   for (i = 0; i < count; i++) {
378      pdraw->buffers[i].attachment = buffers[i].attachment;
379      pdraw->buffers[i].name = buffers[i].name;
380      pdraw->buffers[i].pitch = buffers[i].pitch;
381      pdraw->buffers[i].cpp = buffers[i].cpp;
382      pdraw->buffers[i].flags = buffers[i].flags;
383      if (pdraw->buffers[i].attachment == __DRI_BUFFER_FAKE_FRONT_LEFT)
384         pdraw->have_fake_front = 1;
385      if (pdraw->buffers[i].attachment == __DRI_BUFFER_BACK_LEFT)
386         pdraw->have_back = 1;
387   }
388
389}
390
391static int64_t
392dri2SwapBuffers(__GLXDRIdrawable *pdraw, int64_t target_msc, int64_t divisor,
393		int64_t remainder)
394{
395    __GLXDRIdrawablePrivate *priv = (__GLXDRIdrawablePrivate *) pdraw;
396    __GLXdisplayPrivate *dpyPriv = __glXInitialize(priv->base.psc->dpy);
397    __GLXDRIdisplayPrivate *pdp =
398	(__GLXDRIdisplayPrivate *)dpyPriv->dri2Display;
399    int64_t ret;
400
401#ifdef __DRI2_FLUSH
402    if (pdraw->psc->f)
403    	(*pdraw->psc->f->flush)(pdraw->driDrawable);
404#endif
405
406    /* Old servers don't send invalidate events */
407    if (!pdp->invalidateAvailable)
408       dri2InvalidateBuffers(dpyPriv->dpy, pdraw->drawable);
409
410    /* Old servers can't handle swapbuffers */
411    if (!pdp->swapAvailable) {
412       dri2CopySubBuffer(pdraw, 0, 0, priv->width, priv->height);
413       return 0;
414    }
415
416#ifdef X_DRI2SwapBuffers
417    DRI2SwapBuffers(pdraw->psc->dpy, pdraw->xDrawable, target_msc, divisor,
418		    remainder, &ret);
419#endif
420
421    return ret;
422}
423
424static __DRIbuffer *
425dri2GetBuffers(__DRIdrawable * driDrawable,
426               int *width, int *height,
427               unsigned int *attachments, int count,
428               int *out_count, void *loaderPrivate)
429{
430   __GLXDRIdrawablePrivate *pdraw = loaderPrivate;
431   DRI2Buffer *buffers;
432
433   buffers = DRI2GetBuffers(pdraw->base.psc->dpy, pdraw->base.xDrawable,
434                            width, height, attachments, count, out_count);
435   if (buffers == NULL)
436      return NULL;
437
438   pdraw->width = *width;
439   pdraw->height = *height;
440   process_buffers(pdraw, buffers, *out_count);
441
442   Xfree(buffers);
443
444   return pdraw->buffers;
445}
446
447static __DRIbuffer *
448dri2GetBuffersWithFormat(__DRIdrawable * driDrawable,
449                         int *width, int *height,
450                         unsigned int *attachments, int count,
451                         int *out_count, void *loaderPrivate)
452{
453   __GLXDRIdrawablePrivate *pdraw = loaderPrivate;
454   DRI2Buffer *buffers;
455
456   buffers = DRI2GetBuffersWithFormat(pdraw->base.psc->dpy,
457                                      pdraw->base.xDrawable,
458                                      width, height, attachments,
459                                      count, out_count);
460   if (buffers == NULL)
461      return NULL;
462
463   pdraw->width = *width;
464   pdraw->height = *height;
465   process_buffers(pdraw, buffers, *out_count);
466
467   Xfree(buffers);
468
469   return pdraw->buffers;
470}
471
472#ifdef X_DRI2SwapInterval
473
474static void
475dri2SetSwapInterval(__GLXDRIdrawable *pdraw, int interval)
476{
477   __GLXDRIdrawablePrivate *priv =  (__GLXDRIdrawablePrivate *) pdraw;
478
479   DRI2SwapInterval(priv->base.psc->dpy, pdraw->xDrawable, interval);
480   priv->swap_interval = interval;
481}
482
483static unsigned int
484dri2GetSwapInterval(__GLXDRIdrawable *pdraw)
485{
486   __GLXDRIdrawablePrivate *priv =  (__GLXDRIdrawablePrivate *) pdraw;
487
488  return priv->swap_interval;
489}
490
491#endif /* X_DRI2SwapInterval */
492
493static const __DRIdri2LoaderExtension dri2LoaderExtension = {
494   {__DRI_DRI2_LOADER, __DRI_DRI2_LOADER_VERSION},
495   dri2GetBuffers,
496   dri2FlushFrontBuffer,
497   dri2GetBuffersWithFormat,
498};
499
500static const __DRIdri2LoaderExtension dri2LoaderExtension_old = {
501   {__DRI_DRI2_LOADER, __DRI_DRI2_LOADER_VERSION},
502   dri2GetBuffers,
503   dri2FlushFrontBuffer,
504   NULL,
505};
506
507static const __DRIextension *loader_extensions[] = {
508   &dri2LoaderExtension.base,
509   &systemTimeExtension.base,
510   NULL
511};
512
513static const __DRIextension *loader_extensions_old[] = {
514   &dri2LoaderExtension_old.base,
515   &systemTimeExtension.base,
516   NULL
517};
518
519_X_HIDDEN void
520dri2InvalidateBuffers(Display *dpy, XID drawable)
521{
522   __GLXDRIdrawable *pdraw = GetGLXDRIDrawable(dpy, drawable, NULL);
523
524#if __DRI2_FLUSH_VERSION >= 3
525   if (pdraw && pdraw->psc->f)
526       pdraw->psc->f->invalidate(pdraw->driDrawable);
527#endif
528}
529
530static __GLXDRIscreen *
531dri2CreateScreen(__GLXscreenConfigs * psc, int screen,
532                 __GLXdisplayPrivate * priv)
533{
534   const __DRIconfig **driver_configs;
535   const __DRIextension **extensions;
536   const __GLXDRIdisplayPrivate *const pdp = (__GLXDRIdisplayPrivate *)
537      priv->dri2Display;
538   __GLXDRIscreen *psp;
539   char *driverName, *deviceName;
540   drm_magic_t magic;
541   int i;
542
543   psp = Xmalloc(sizeof *psp);
544   if (psp == NULL)
545      return NULL;
546
547   if (!DRI2Connect(psc->dpy, RootWindow(psc->dpy, screen),
548		    &driverName, &deviceName)) {
549      XFree(psp);
550      return NULL;
551   }
552
553   psc->driver = driOpenDriver(driverName);
554   if (psc->driver == NULL) {
555      ErrorMessageF("driver pointer missing\n");
556      goto handle_error;
557   }
558
559   extensions = dlsym(psc->driver, __DRI_DRIVER_EXTENSIONS);
560   if (extensions == NULL) {
561      ErrorMessageF("driver exports no extensions (%s)\n", dlerror());
562      goto handle_error;
563   }
564
565   for (i = 0; extensions[i]; i++) {
566      if (strcmp(extensions[i]->name, __DRI_CORE) == 0)
567	 psc->core = (__DRIcoreExtension *) extensions[i];
568      if (strcmp(extensions[i]->name, __DRI_DRI2) == 0)
569	 psc->dri2 = (__DRIdri2Extension *) extensions[i];
570   }
571
572   if (psc->core == NULL || psc->dri2 == NULL) {
573      ErrorMessageF("core dri or dri2 extension not found\n");
574      goto handle_error;
575   }
576
577   psc->fd = open(deviceName, O_RDWR);
578   if (psc->fd < 0) {
579      ErrorMessageF("failed to open drm device: %s\n", strerror(errno));
580      goto handle_error;
581   }
582
583   if (drmGetMagic(psc->fd, &magic)) {
584      ErrorMessageF("failed to get magic\n");
585      goto handle_error;
586   }
587
588   if (!DRI2Authenticate(psc->dpy, RootWindow(psc->dpy, screen), magic)) {
589      ErrorMessageF("failed to authenticate magic %d\n", magic);
590      goto handle_error;
591   }
592
593   /* If the server does not support the protocol for
594    * DRI2GetBuffersWithFormat, don't supply that interface to the driver.
595    */
596   psc->__driScreen =
597      psc->dri2->createNewScreen(screen, psc->fd, ((pdp->driMinor < 1)
598						   ? loader_extensions_old
599						   : loader_extensions),
600				 &driver_configs, psc);
601
602   if (psc->__driScreen == NULL) {
603      ErrorMessageF("failed to create dri screen\n");
604      goto handle_error;
605   }
606
607   driBindCommonExtensions(psc);
608   dri2BindExtensions(psc);
609
610   psc->configs = driConvertConfigs(psc->core, psc->configs, driver_configs);
611   psc->visuals = driConvertConfigs(psc->core, psc->visuals, driver_configs);
612
613   psc->driver_configs = driver_configs;
614
615   psp->destroyScreen = dri2DestroyScreen;
616   psp->createContext = dri2CreateContext;
617   psp->createDrawable = dri2CreateDrawable;
618   psp->swapBuffers = dri2SwapBuffers;
619   psp->waitGL = dri2WaitGL;
620   psp->waitX = dri2WaitX;
621   psp->getDrawableMSC = NULL;
622   psp->waitForMSC = NULL;
623   psp->waitForSBC = NULL;
624   psp->setSwapInterval = NULL;
625   psp->getSwapInterval = NULL;
626
627   if (pdp->driMinor >= 2) {
628#ifdef X_DRI2GetMSC
629      psp->getDrawableMSC = dri2DrawableGetMSC;
630#endif
631#ifdef X_DRI2WaitMSC
632      psp->waitForMSC = dri2WaitForMSC;
633      psp->waitForSBC = dri2WaitForSBC;
634#endif
635#ifdef X_DRI2SwapInterval
636      psp->setSwapInterval = dri2SetSwapInterval;
637      psp->getSwapInterval = dri2GetSwapInterval;
638#endif
639#if defined(X_DRI2GetMSC) && defined(X_DRI2WaitMSC) && defined(X_DRI2SwapInterval)
640      __glXEnableDirectExtension(psc, "GLX_OML_sync_control");
641#endif
642   }
643
644   /* DRI2 suports SubBuffer through DRI2CopyRegion, so it's always
645    * available.*/
646   psp->copySubBuffer = dri2CopySubBuffer;
647   __glXEnableDirectExtension(psc, "GLX_MESA_copy_sub_buffer");
648
649   Xfree(driverName);
650   Xfree(deviceName);
651
652   return psp;
653
654handle_error:
655   Xfree(driverName);
656   Xfree(deviceName);
657   XFree(psp);
658
659   /* FIXME: clean up here */
660
661   return NULL;
662}
663
664/* Called from __glXFreeDisplayPrivate.
665 */
666static void
667dri2DestroyDisplay(__GLXDRIdisplay * dpy)
668{
669   Xfree(dpy);
670}
671
672/*
673 * Allocate, initialize and return a __DRIdisplayPrivate object.
674 * This is called from __glXInitialize() when we are given a new
675 * display pointer.
676 */
677_X_HIDDEN __GLXDRIdisplay *
678dri2CreateDisplay(Display * dpy)
679{
680   __GLXDRIdisplayPrivate *pdp;
681   int eventBase, errorBase;
682
683   if (!DRI2QueryExtension(dpy, &eventBase, &errorBase))
684      return NULL;
685
686   pdp = Xmalloc(sizeof *pdp);
687   if (pdp == NULL)
688      return NULL;
689
690   if (!DRI2QueryVersion(dpy, &pdp->driMajor, &pdp->driMinor)) {
691      Xfree(pdp);
692      return NULL;
693   }
694
695   pdp->driPatch = 0;
696   pdp->swapAvailable = (pdp->driMinor >= 2);
697   pdp->invalidateAvailable = (pdp->driMinor >= 3);
698
699   pdp->base.destroyDisplay = dri2DestroyDisplay;
700   pdp->base.createScreen = dri2CreateScreen;
701
702   return &pdp->base;
703}
704
705#endif /* GLX_DIRECT_RENDERING */
706