dri2_glx.c revision 6ec39db726beead21d97bf64ddbe1f0b2d2d6ca1 
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#if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
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
51/* From xmlpool/options.h, user exposed so should be stable */
52#define DRI_CONF_VBLANK_NEVER 0
53#define DRI_CONF_VBLANK_DEF_INTERVAL_0 1
54#define DRI_CONF_VBLANK_DEF_INTERVAL_1 2
55#define DRI_CONF_VBLANK_ALWAYS_SYNC 3
56
57#undef DRI2_MINOR
58#define DRI2_MINOR 1
59
60struct dri2_display
61{
62   __GLXDRIdisplay base;
63
64   /*
65    ** XFree86-DRI version information
66    */
67   int driMajor;
68   int driMinor;
69   int driPatch;
70   int swapAvailable;
71   int invalidateAvailable;
72
73   __glxHashTable *dri2Hash;
74
75   const __DRIextension *loader_extensions[4];
76};
77
78struct dri2_screen {
79   __GLXscreenConfigs base;
80
81   __DRIscreen *driScreen;
82   __GLXDRIscreen vtable;
83   const __DRIdri2Extension *dri2;
84   const __DRIcoreExtension *core;
85
86   const __DRI2flushExtension *f;
87   const __DRI2configQueryExtension *config;
88   const __DRItexBufferExtension *texBuffer;
89   const __DRIconfig **driver_configs;
90
91   void *driver;
92   int fd;
93};
94
95struct dri2_context
96{
97   __GLXcontext base;
98   __GLXDRIcontext dri_vtable;
99   __DRIcontext *driContext;
100};
101
102struct dri2_drawable
103{
104   __GLXDRIdrawable base;
105   __DRIdrawable *driDrawable;
106   __DRIbuffer buffers[5];
107   int bufferCount;
108   int width, height;
109   int have_back;
110   int have_fake_front;
111   int swap_interval;
112};
113
114static const struct glx_context_vtable dri2_context_vtable;
115
116static void
117dri2_destroy_context(__GLXcontext *context)
118{
119   struct dri2_context *pcp = (struct dri2_context *) context;
120   struct dri2_screen *psc = (struct dri2_screen *) context->psc;
121
122   glx_send_destroy_context(psc->base.dpy, context->xid);
123
124   if (context->extensions)
125      XFree((char *) context->extensions);
126
127   GarbageCollectDRIDrawables(context->psc);
128
129   (*psc->core->destroyContext) (pcp->driContext);
130
131   Xfree(pcp);
132}
133
134static Bool
135dri2BindContext(__GLXcontext *context,
136		__GLXDRIdrawable *draw, __GLXDRIdrawable *read)
137{
138   struct dri2_context *pcp = (struct dri2_context *) context;
139   struct dri2_screen *psc = (struct dri2_screen *) pcp->base.psc;
140   struct dri2_drawable *pdr = (struct dri2_drawable *) draw;
141   struct dri2_drawable *prd = (struct dri2_drawable *) read;
142
143   return (*psc->core->bindContext) (pcp->driContext,
144				     pdr->driDrawable, prd->driDrawable);
145}
146
147static void
148dri2UnbindContext(__GLXcontext *context)
149{
150   struct dri2_context *pcp = (struct dri2_context *) context;
151   struct dri2_screen *psc = (struct dri2_screen *) pcp->base.psc;
152
153   (*psc->core->unbindContext) (pcp->driContext);
154}
155
156static __GLXcontext *
157dri2_create_context(__GLXscreenConfigs *base,
158		    const __GLcontextModes * mode,
159		    GLXContext shareList, int renderType)
160{
161   struct dri2_context *pcp, *pcp_shared;
162   struct dri2_screen *psc = (struct dri2_screen *) base;
163   __GLXDRIconfigPrivate *config = (__GLXDRIconfigPrivate *) mode;
164   __DRIcontext *shared = NULL;
165
166   if (shareList) {
167      pcp_shared = (struct dri2_context *) shareList->driContext;
168      shared = pcp_shared->driContext;
169   }
170
171   pcp = Xmalloc(sizeof *pcp);
172   if (pcp == NULL)
173      return NULL;
174
175   memset(pcp, 0, sizeof *pcp);
176   if (!glx_context_init(&pcp->base, &psc->base, mode)) {
177      Xfree(pcp);
178      return NULL;
179   }
180
181   pcp->driContext =
182      (*psc->dri2->createNewContext) (psc->driScreen,
183                                      config->driConfig, shared, pcp);
184
185   if (pcp->driContext == NULL) {
186      Xfree(pcp);
187      return NULL;
188   }
189
190   pcp->base.vtable = &dri2_context_vtable;
191   pcp->base.driContext = &pcp->dri_vtable;
192   pcp->dri_vtable.bindContext = dri2BindContext;
193   pcp->dri_vtable.unbindContext = dri2UnbindContext;
194
195   return &pcp->base;
196}
197
198static void
199dri2DestroyDrawable(__GLXDRIdrawable *base)
200{
201   struct dri2_screen *psc = (struct dri2_screen *) base->psc;
202   struct dri2_drawable *pdraw = (struct dri2_drawable *) base;
203   __GLXdisplayPrivate *dpyPriv = psc->base.display;
204   struct dri2_display *pdp = (struct dri2_display *)dpyPriv->dri2Display;
205
206   __glxHashDelete(pdp->dri2Hash, pdraw->base.xDrawable);
207   (*psc->core->destroyDrawable) (pdraw->driDrawable);
208   DRI2DestroyDrawable(psc->base.dpy, pdraw->base.xDrawable);
209   Xfree(pdraw);
210}
211
212static __GLXDRIdrawable *
213dri2CreateDrawable(__GLXscreenConfigs *base, XID xDrawable,
214		   GLXDrawable drawable, const __GLcontextModes * modes)
215{
216   struct dri2_drawable *pdraw;
217   struct dri2_screen *psc = (struct dri2_screen *) base;
218   __GLXDRIconfigPrivate *config = (__GLXDRIconfigPrivate *) modes;
219   __GLXdisplayPrivate *dpyPriv;
220   struct dri2_display *pdp;
221   GLint vblank_mode = DRI_CONF_VBLANK_DEF_INTERVAL_1;
222
223   pdraw = Xmalloc(sizeof(*pdraw));
224   if (!pdraw)
225      return NULL;
226
227   pdraw->base.destroyDrawable = dri2DestroyDrawable;
228   pdraw->base.xDrawable = xDrawable;
229   pdraw->base.drawable = drawable;
230   pdraw->base.psc = &psc->base;
231   pdraw->bufferCount = 0;
232   pdraw->swap_interval = 1; /* default may be overridden below */
233   pdraw->have_back = 0;
234
235   if (psc->config)
236      psc->config->configQueryi(psc->driScreen,
237				"vblank_mode", &vblank_mode);
238
239   switch (vblank_mode) {
240   case DRI_CONF_VBLANK_NEVER:
241   case DRI_CONF_VBLANK_DEF_INTERVAL_0:
242      pdraw->swap_interval = 0;
243      break;
244   case DRI_CONF_VBLANK_DEF_INTERVAL_1:
245   case DRI_CONF_VBLANK_ALWAYS_SYNC:
246   default:
247      pdraw->swap_interval = 1;
248      break;
249   }
250
251   DRI2CreateDrawable(psc->base.dpy, xDrawable);
252
253   dpyPriv = __glXInitialize(psc->base.dpy);
254   pdp = (struct dri2_display *)dpyPriv->dri2Display;;
255   /* Create a new drawable */
256   pdraw->driDrawable =
257      (*psc->dri2->createNewDrawable) (psc->driScreen,
258                                       config->driConfig, pdraw);
259
260   if (!pdraw->driDrawable) {
261      DRI2DestroyDrawable(psc->base.dpy, xDrawable);
262      Xfree(pdraw);
263      return NULL;
264   }
265
266   if (__glxHashInsert(pdp->dri2Hash, xDrawable, pdraw)) {
267      (*psc->core->destroyDrawable) (pdraw->driDrawable);
268      DRI2DestroyDrawable(psc->base.dpy, xDrawable);
269      Xfree(pdraw);
270      return None;
271   }
272
273
274#ifdef X_DRI2SwapInterval
275   /*
276    * Make sure server has the same swap interval we do for the new
277    * drawable.
278    */
279   if (pdp->swapAvailable)
280      DRI2SwapInterval(psc->base.dpy, xDrawable, pdraw->swap_interval);
281#endif
282
283   return &pdraw->base;
284}
285
286#ifdef X_DRI2GetMSC
287
288static int
289dri2DrawableGetMSC(__GLXscreenConfigs *psc, __GLXDRIdrawable *pdraw,
290		   int64_t *ust, int64_t *msc, int64_t *sbc)
291{
292   CARD64 dri2_ust, dri2_msc, dri2_sbc;
293   int ret;
294
295   ret = DRI2GetMSC(psc->dpy, pdraw->xDrawable,
296		    &dri2_ust, &dri2_msc, &dri2_sbc);
297   *ust = dri2_ust;
298   *msc = dri2_msc;
299   *sbc = dri2_sbc;
300
301   return ret;
302}
303
304#endif
305
306
307#ifdef X_DRI2WaitMSC
308
309static int
310dri2WaitForMSC(__GLXDRIdrawable *pdraw, int64_t target_msc, int64_t divisor,
311	       int64_t remainder, int64_t *ust, int64_t *msc, int64_t *sbc)
312{
313   CARD64 dri2_ust, dri2_msc, dri2_sbc;
314   int ret;
315
316   ret = DRI2WaitMSC(pdraw->psc->dpy, pdraw->xDrawable, target_msc, divisor,
317		     remainder, &dri2_ust, &dri2_msc, &dri2_sbc);
318   *ust = dri2_ust;
319   *msc = dri2_msc;
320   *sbc = dri2_sbc;
321
322   return ret;
323}
324
325static int
326dri2WaitForSBC(__GLXDRIdrawable *pdraw, int64_t target_sbc, int64_t *ust,
327	       int64_t *msc, int64_t *sbc)
328{
329   CARD64 dri2_ust, dri2_msc, dri2_sbc;
330   int ret;
331
332   ret = DRI2WaitSBC(pdraw->psc->dpy, pdraw->xDrawable,
333		     target_sbc, &dri2_ust, &dri2_msc, &dri2_sbc);
334   *ust = dri2_ust;
335   *msc = dri2_msc;
336   *sbc = dri2_sbc;
337
338   return ret;
339}
340
341#endif /* X_DRI2WaitMSC */
342
343static void
344dri2CopySubBuffer(__GLXDRIdrawable *pdraw, int x, int y, int width, int height)
345{
346   struct dri2_drawable *priv = (struct dri2_drawable *) pdraw;
347   struct dri2_screen *psc = (struct dri2_screen *) pdraw->psc;
348   XRectangle xrect;
349   XserverRegion region;
350
351   /* Check we have the right attachments */
352   if (!priv->have_back)
353      return;
354
355   xrect.x = x;
356   xrect.y = priv->height - y - height;
357   xrect.width = width;
358   xrect.height = height;
359
360#ifdef __DRI2_FLUSH
361   if (psc->f)
362      (*psc->f->flush) (priv->driDrawable);
363#endif
364
365   region = XFixesCreateRegion(psc->base.dpy, &xrect, 1);
366   DRI2CopyRegion(psc->base.dpy, pdraw->xDrawable, region,
367                  DRI2BufferFrontLeft, DRI2BufferBackLeft);
368
369   /* Refresh the fake front (if present) after we just damaged the real
370    * front.
371    */
372   if (priv->have_fake_front)
373      DRI2CopyRegion(psc->base.dpy, pdraw->xDrawable, region,
374		     DRI2BufferFakeFrontLeft, DRI2BufferFrontLeft);
375
376   XFixesDestroyRegion(psc->base.dpy, region);
377}
378
379static void
380dri2_copy_drawable(struct dri2_drawable *priv, int dest, int src)
381{
382   XRectangle xrect;
383   XserverRegion region;
384   struct dri2_screen *psc = (struct dri2_screen *) priv->base.psc;
385
386   xrect.x = 0;
387   xrect.y = 0;
388   xrect.width = priv->width;
389   xrect.height = priv->height;
390
391#ifdef __DRI2_FLUSH
392   if (psc->f)
393      (*psc->f->flush) (priv->driDrawable);
394#endif
395
396   region = XFixesCreateRegion(psc->base.dpy, &xrect, 1);
397   DRI2CopyRegion(psc->base.dpy, priv->base.xDrawable, region, dest, src);
398   XFixesDestroyRegion(psc->base.dpy, region);
399
400}
401
402static void
403dri2_wait_x(__GLXcontext *gc)
404{
405   struct dri2_drawable *priv = (struct dri2_drawable *)
406      GetGLXDRIDrawable(gc->currentDpy, gc->currentDrawable);
407
408   if (priv == NULL || !priv->have_fake_front)
409      return;
410
411   dri2_copy_drawable(priv, DRI2BufferFakeFrontLeft, DRI2BufferFrontLeft);
412}
413
414static void
415dri2_wait_gl(__GLXcontext *gc)
416{
417   struct dri2_drawable *priv = (struct dri2_drawable *)
418      GetGLXDRIDrawable(gc->currentDpy, gc->currentDrawable);
419
420   if (priv == NULL || !priv->have_fake_front)
421      return;
422
423   dri2_copy_drawable(priv, DRI2BufferFrontLeft, DRI2BufferFakeFrontLeft);
424}
425
426static void
427dri2FlushFrontBuffer(__DRIdrawable *driDrawable, void *loaderPrivate)
428{
429   struct dri2_drawable *pdraw = loaderPrivate;
430   __GLXdisplayPrivate *priv = __glXInitialize(pdraw->base.psc->dpy);
431   struct dri2_display *pdp = (struct dri2_display *)priv->dri2Display;
432   GLXContext gc = __glXGetCurrentContext();
433
434   /* Old servers don't send invalidate events */
435   if (!pdp->invalidateAvailable)
436       dri2InvalidateBuffers(priv->dpy, pdraw->base.drawable);
437
438   dri2_wait_gl(gc);
439}
440
441
442static void
443dri2DestroyScreen(__GLXscreenConfigs *base)
444{
445   struct dri2_screen *psc = (struct dri2_screen *) base;
446
447   /* Free the direct rendering per screen data */
448   (*psc->core->destroyScreen) (psc->driScreen);
449   driDestroyConfigs(psc->driver_configs);
450   close(psc->fd);
451   Xfree(psc);
452}
453
454/**
455 * Process list of buffer received from the server
456 *
457 * Processes the list of buffers received in a reply from the server to either
458 * \c DRI2GetBuffers or \c DRI2GetBuffersWithFormat.
459 */
460static void
461process_buffers(struct dri2_drawable * pdraw, DRI2Buffer * buffers,
462                unsigned count)
463{
464   int i;
465
466   pdraw->bufferCount = count;
467   pdraw->have_fake_front = 0;
468   pdraw->have_back = 0;
469
470   /* This assumes the DRI2 buffer attachment tokens matches the
471    * __DRIbuffer tokens. */
472   for (i = 0; i < count; i++) {
473      pdraw->buffers[i].attachment = buffers[i].attachment;
474      pdraw->buffers[i].name = buffers[i].name;
475      pdraw->buffers[i].pitch = buffers[i].pitch;
476      pdraw->buffers[i].cpp = buffers[i].cpp;
477      pdraw->buffers[i].flags = buffers[i].flags;
478      if (pdraw->buffers[i].attachment == __DRI_BUFFER_FAKE_FRONT_LEFT)
479         pdraw->have_fake_front = 1;
480      if (pdraw->buffers[i].attachment == __DRI_BUFFER_BACK_LEFT)
481         pdraw->have_back = 1;
482   }
483
484}
485
486static int64_t
487dri2SwapBuffers(__GLXDRIdrawable *pdraw, int64_t target_msc, int64_t divisor,
488		int64_t remainder)
489{
490    struct dri2_drawable *priv = (struct dri2_drawable *) pdraw;
491    __GLXdisplayPrivate *dpyPriv = __glXInitialize(priv->base.psc->dpy);
492    struct dri2_screen *psc = (struct dri2_screen *) priv->base.psc;
493    struct dri2_display *pdp =
494	(struct dri2_display *)dpyPriv->dri2Display;
495    CARD64 ret;
496
497#ifdef __DRI2_FLUSH
498    if (psc->f)
499    	(*psc->f->flush)(priv->driDrawable);
500#endif
501
502    /* Old servers don't send invalidate events */
503    if (!pdp->invalidateAvailable)
504       dri2InvalidateBuffers(dpyPriv->dpy, pdraw->drawable);
505
506    /* Old servers can't handle swapbuffers */
507    if (!pdp->swapAvailable) {
508       dri2CopySubBuffer(pdraw, 0, 0, priv->width, priv->height);
509       return 0;
510    }
511
512#ifdef X_DRI2SwapBuffers
513    DRI2SwapBuffers(psc->base.dpy, pdraw->xDrawable, target_msc, divisor,
514		    remainder, &ret);
515#endif
516
517    return ret;
518}
519
520static __DRIbuffer *
521dri2GetBuffers(__DRIdrawable * driDrawable,
522               int *width, int *height,
523               unsigned int *attachments, int count,
524               int *out_count, void *loaderPrivate)
525{
526   struct dri2_drawable *pdraw = loaderPrivate;
527   DRI2Buffer *buffers;
528
529   buffers = DRI2GetBuffers(pdraw->base.psc->dpy, pdraw->base.xDrawable,
530                            width, height, attachments, count, out_count);
531   if (buffers == NULL)
532      return NULL;
533
534   pdraw->width = *width;
535   pdraw->height = *height;
536   process_buffers(pdraw, buffers, *out_count);
537
538   Xfree(buffers);
539
540   return pdraw->buffers;
541}
542
543static __DRIbuffer *
544dri2GetBuffersWithFormat(__DRIdrawable * driDrawable,
545                         int *width, int *height,
546                         unsigned int *attachments, int count,
547                         int *out_count, void *loaderPrivate)
548{
549   struct dri2_drawable *pdraw = loaderPrivate;
550   DRI2Buffer *buffers;
551
552   buffers = DRI2GetBuffersWithFormat(pdraw->base.psc->dpy,
553                                      pdraw->base.xDrawable,
554                                      width, height, attachments,
555                                      count, out_count);
556   if (buffers == NULL)
557      return NULL;
558
559   pdraw->width = *width;
560   pdraw->height = *height;
561   process_buffers(pdraw, buffers, *out_count);
562
563   Xfree(buffers);
564
565   return pdraw->buffers;
566}
567
568#ifdef X_DRI2SwapInterval
569
570static int
571dri2SetSwapInterval(__GLXDRIdrawable *pdraw, int interval)
572{
573   struct dri2_drawable *priv =  (struct dri2_drawable *) pdraw;
574   GLint vblank_mode = DRI_CONF_VBLANK_DEF_INTERVAL_1;
575   struct dri2_screen *psc = (struct dri2_screen *) priv->base.psc;
576
577   if (psc->config)
578      psc->config->configQueryi(psc->driScreen,
579				"vblank_mode", &vblank_mode);
580
581   switch (vblank_mode) {
582   case DRI_CONF_VBLANK_NEVER:
583      return GLX_BAD_VALUE;
584   case DRI_CONF_VBLANK_ALWAYS_SYNC:
585      if (interval <= 0)
586	 return GLX_BAD_VALUE;
587      break;
588   default:
589      break;
590   }
591
592   DRI2SwapInterval(priv->base.psc->dpy, priv->base.xDrawable, interval);
593   priv->swap_interval = interval;
594
595   return 0;
596}
597
598static int
599dri2GetSwapInterval(__GLXDRIdrawable *pdraw)
600{
601   struct dri2_drawable *priv =  (struct dri2_drawable *) pdraw;
602
603  return priv->swap_interval;
604}
605
606#endif /* X_DRI2SwapInterval */
607
608static const __DRIdri2LoaderExtension dri2LoaderExtension = {
609   {__DRI_DRI2_LOADER, __DRI_DRI2_LOADER_VERSION},
610   dri2GetBuffers,
611   dri2FlushFrontBuffer,
612   dri2GetBuffersWithFormat,
613};
614
615static const __DRIdri2LoaderExtension dri2LoaderExtension_old = {
616   {__DRI_DRI2_LOADER, __DRI_DRI2_LOADER_VERSION},
617   dri2GetBuffers,
618   dri2FlushFrontBuffer,
619   NULL,
620};
621
622#ifdef __DRI_USE_INVALIDATE
623static const __DRIuseInvalidateExtension dri2UseInvalidate = {
624   { __DRI_USE_INVALIDATE, __DRI_USE_INVALIDATE_VERSION }
625};
626#endif
627
628_X_HIDDEN void
629dri2InvalidateBuffers(Display *dpy, XID drawable)
630{
631   __GLXDRIdrawable *pdraw =
632      dri2GetGlxDrawableFromXDrawableId(dpy, drawable);
633   struct dri2_screen *psc = (struct dri2_screen *) pdraw->psc;
634   struct dri2_drawable *pdp = (struct dri2_drawable *) pdraw;
635
636#if __DRI2_FLUSH_VERSION >= 3
637   if (pdraw && psc->f)
638       psc->f->invalidate(pdp->driDrawable);
639#endif
640}
641
642static void
643dri2_bind_tex_image(Display * dpy,
644		    GLXDrawable drawable,
645		    int buffer, const int *attrib_list)
646{
647   GLXContext gc = __glXGetCurrentContext();
648   __GLXDRIdrawable *base = GetGLXDRIDrawable(dpy, drawable);
649   __GLXdisplayPrivate *dpyPriv = __glXInitialize(dpy);
650   struct dri2_drawable *pdraw = (struct dri2_drawable *) base;
651   struct dri2_display *pdp =
652      (struct dri2_display *) dpyPriv->dri2Display;
653   struct dri2_screen *psc = (struct dri2_screen *) base->psc;
654   struct dri2_context *pcp = (struct dri2_context *) gc->driContext;
655
656   if (pdraw != NULL) {
657
658#if __DRI2_FLUSH_VERSION >= 3
659      if (!pdp->invalidateAvailable && psc->f)
660	 psc->f->invalidate(pdraw->driDrawable);
661#endif
662
663      if (psc->texBuffer->base.version >= 2 &&
664	  psc->texBuffer->setTexBuffer2 != NULL) {
665	 (*psc->texBuffer->setTexBuffer2) (pcp->driContext,
666					   pdraw->base.textureTarget,
667					   pdraw->base.textureFormat,
668					   pdraw->driDrawable);
669      }
670      else {
671	 (*psc->texBuffer->setTexBuffer) (pcp->driContext,
672					  pdraw->base.textureTarget,
673					  pdraw->driDrawable);
674      }
675   }
676}
677
678static void
679dri2_release_tex_image(Display * dpy, GLXDrawable drawable, int buffer)
680{
681}
682
683static const struct glx_context_vtable dri2_context_vtable = {
684   dri2_destroy_context,
685   dri2_wait_gl,
686   dri2_wait_x,
687   DRI_glXUseXFont,
688   dri2_bind_tex_image,
689   dri2_release_tex_image,
690};
691
692static void
693dri2BindExtensions(struct dri2_screen *psc, const __DRIextension **extensions)
694{
695   int i;
696
697   __glXEnableDirectExtension(&psc->base, "GLX_SGI_video_sync");
698   __glXEnableDirectExtension(&psc->base, "GLX_SGI_swap_control");
699   __glXEnableDirectExtension(&psc->base, "GLX_MESA_swap_control");
700   __glXEnableDirectExtension(&psc->base, "GLX_SGI_make_current_read");
701
702   /* FIXME: if DRI2 version supports it... */
703   __glXEnableDirectExtension(&psc->base, "INTEL_swap_event");
704
705   for (i = 0; extensions[i]; i++) {
706      if ((strcmp(extensions[i]->name, __DRI_TEX_BUFFER) == 0)) {
707	 psc->texBuffer = (__DRItexBufferExtension *) extensions[i];
708	 __glXEnableDirectExtension(&psc->base, "GLX_EXT_texture_from_pixmap");
709      }
710
711      if ((strcmp(extensions[i]->name, __DRI2_FLUSH) == 0)) {
712	 psc->f = (__DRI2flushExtension *) extensions[i];
713	 /* internal driver extension, no GL extension exposed */
714      }
715
716      if ((strcmp(extensions[i]->name, __DRI2_CONFIG_QUERY) == 0))
717	 psc->config = (__DRI2configQueryExtension *) extensions[i];
718   }
719}
720
721static const struct glx_screen_vtable dri2_screen_vtable = {
722   dri2_create_context
723};
724
725static __GLXscreenConfigs *
726dri2CreateScreen(int screen, __GLXdisplayPrivate * priv)
727{
728   const __DRIconfig **driver_configs;
729   const __DRIextension **extensions;
730   const struct dri2_display *const pdp = (struct dri2_display *)
731      priv->dri2Display;
732   struct dri2_screen *psc;
733   __GLXDRIscreen *psp;
734   char *driverName, *deviceName;
735   drm_magic_t magic;
736   int i;
737
738   psc = Xmalloc(sizeof *psc);
739   if (psc == NULL)
740      return NULL;
741
742   memset(psc, 0, sizeof *psc);
743   if (!glx_screen_init(&psc->base, screen, priv))
744       return NULL;
745
746   if (!DRI2Connect(priv->dpy, RootWindow(priv->dpy, screen),
747		    &driverName, &deviceName)) {
748      XFree(psc);
749      return NULL;
750   }
751
752   psc->driver = driOpenDriver(driverName);
753   if (psc->driver == NULL) {
754      ErrorMessageF("driver pointer missing\n");
755      goto handle_error;
756   }
757
758   extensions = dlsym(psc->driver, __DRI_DRIVER_EXTENSIONS);
759   if (extensions == NULL) {
760      ErrorMessageF("driver exports no extensions (%s)\n", dlerror());
761      goto handle_error;
762   }
763
764   for (i = 0; extensions[i]; i++) {
765      if (strcmp(extensions[i]->name, __DRI_CORE) == 0)
766	 psc->core = (__DRIcoreExtension *) extensions[i];
767      if (strcmp(extensions[i]->name, __DRI_DRI2) == 0)
768	 psc->dri2 = (__DRIdri2Extension *) extensions[i];
769   }
770
771   if (psc->core == NULL || psc->dri2 == NULL) {
772      ErrorMessageF("core dri or dri2 extension not found\n");
773      goto handle_error;
774   }
775
776   psc->fd = open(deviceName, O_RDWR);
777   if (psc->fd < 0) {
778      ErrorMessageF("failed to open drm device: %s\n", strerror(errno));
779      goto handle_error;
780   }
781
782   if (drmGetMagic(psc->fd, &magic)) {
783      ErrorMessageF("failed to get magic\n");
784      goto handle_error;
785   }
786
787   if (!DRI2Authenticate(priv->dpy, RootWindow(priv->dpy, screen), magic)) {
788      ErrorMessageF("failed to authenticate magic %d\n", magic);
789      goto handle_error;
790   }
791
792
793   /* If the server does not support the protocol for
794    * DRI2GetBuffersWithFormat, don't supply that interface to the driver.
795    */
796   psc->driScreen =
797      psc->dri2->createNewScreen(screen, psc->fd,
798				 (const __DRIextension **)
799				 &pdp->loader_extensions[0],
800				 &driver_configs, psc);
801
802   if (psc->driScreen == NULL) {
803      ErrorMessageF("failed to create dri screen\n");
804      goto handle_error;
805   }
806
807   extensions = psc->core->getExtensions(psc->driScreen);
808   dri2BindExtensions(psc, extensions);
809
810   psc->base.configs =
811      driConvertConfigs(psc->core, psc->base.configs, driver_configs);
812   psc->base.visuals =
813      driConvertConfigs(psc->core, psc->base.visuals, driver_configs);
814
815   psc->driver_configs = driver_configs;
816
817   psc->base.vtable = &dri2_screen_vtable;
818   psp = &psc->vtable;
819   psc->base.driScreen = psp;
820   psp->destroyScreen = dri2DestroyScreen;
821   psp->createDrawable = dri2CreateDrawable;
822   psp->swapBuffers = dri2SwapBuffers;
823   psp->getDrawableMSC = NULL;
824   psp->waitForMSC = NULL;
825   psp->waitForSBC = NULL;
826   psp->setSwapInterval = NULL;
827   psp->getSwapInterval = NULL;
828
829   if (pdp->driMinor >= 2) {
830#ifdef X_DRI2GetMSC
831      psp->getDrawableMSC = dri2DrawableGetMSC;
832#endif
833#ifdef X_DRI2WaitMSC
834      psp->waitForMSC = dri2WaitForMSC;
835      psp->waitForSBC = dri2WaitForSBC;
836#endif
837#ifdef X_DRI2SwapInterval
838      psp->setSwapInterval = dri2SetSwapInterval;
839      psp->getSwapInterval = dri2GetSwapInterval;
840#endif
841#if defined(X_DRI2GetMSC) && defined(X_DRI2WaitMSC) && defined(X_DRI2SwapInterval)
842      __glXEnableDirectExtension(&psc->base, "GLX_OML_sync_control");
843#endif
844   }
845
846   /* DRI2 suports SubBuffer through DRI2CopyRegion, so it's always
847    * available.*/
848   psp->copySubBuffer = dri2CopySubBuffer;
849   __glXEnableDirectExtension(&psc->base, "GLX_MESA_copy_sub_buffer");
850
851   Xfree(driverName);
852   Xfree(deviceName);
853
854   return &psc->base;
855
856handle_error:
857   Xfree(driverName);
858   Xfree(deviceName);
859   XFree(psc);
860
861   /* FIXME: clean up here */
862
863   return NULL;
864}
865
866/* Called from __glXFreeDisplayPrivate.
867 */
868static void
869dri2DestroyDisplay(__GLXDRIdisplay * dpy)
870{
871   Xfree(dpy);
872}
873
874_X_HIDDEN __GLXDRIdrawable *
875dri2GetGlxDrawableFromXDrawableId(Display *dpy, XID id)
876{
877   __GLXdisplayPrivate *d = __glXInitialize(dpy);
878   struct dri2_display *pdp = (struct dri2_display *) d->dri2Display;
879   __GLXDRIdrawable *pdraw;
880
881   if (__glxHashLookup(pdp->dri2Hash, id, (void *) &pdraw) == 0)
882      return pdraw;
883
884   return NULL;
885}
886
887/*
888 * Allocate, initialize and return a __DRIdisplayPrivate object.
889 * This is called from __glXInitialize() when we are given a new
890 * display pointer.
891 */
892_X_HIDDEN __GLXDRIdisplay *
893dri2CreateDisplay(Display * dpy)
894{
895   struct dri2_display *pdp;
896   int eventBase, errorBase, i;
897
898   if (!DRI2QueryExtension(dpy, &eventBase, &errorBase))
899      return NULL;
900
901   pdp = Xmalloc(sizeof *pdp);
902   if (pdp == NULL)
903      return NULL;
904
905   if (!DRI2QueryVersion(dpy, &pdp->driMajor, &pdp->driMinor)) {
906      Xfree(pdp);
907      return NULL;
908   }
909
910   pdp->driPatch = 0;
911   pdp->swapAvailable = (pdp->driMinor >= 2);
912   pdp->invalidateAvailable = (pdp->driMinor >= 3);
913
914   pdp->base.destroyDisplay = dri2DestroyDisplay;
915   pdp->base.createScreen = dri2CreateScreen;
916
917   i = 0;
918   if (pdp->driMinor < 1)
919      pdp->loader_extensions[i++] = &dri2LoaderExtension_old.base;
920   else
921      pdp->loader_extensions[i++] = &dri2LoaderExtension.base;
922
923   pdp->loader_extensions[i++] = &systemTimeExtension.base;
924
925#ifdef __DRI_USE_INVALIDATE
926   pdp->loader_extensions[i++] = &dri2UseInvalidate.base;
927#endif
928   pdp->loader_extensions[i++] = NULL;
929
930   pdp->dri2Hash = __glxHashCreate();
931   if (pdp->dri2Hash == NULL) {
932      Xfree(pdp);
933      return NULL;
934   }
935
936   return &pdp->base;
937}
938
939#endif /* GLX_DIRECT_RENDERING */
940