dri2_glx.c revision 164108e3db5ba09d8e0605f88aa17dab83b68742 
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   struct glx_screen 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   struct glx_context base;
98   __DRIcontext *driContext;
99};
100
101struct dri2_drawable
102{
103   __GLXDRIdrawable base;
104   __DRIdrawable *driDrawable;
105   __DRIbuffer buffers[5];
106   int bufferCount;
107   int width, height;
108   int have_back;
109   int have_fake_front;
110   int swap_interval;
111};
112
113static const struct glx_context_vtable dri2_context_vtable;
114
115static void
116dri2_destroy_context(struct glx_context *context)
117{
118   struct dri2_context *pcp = (struct dri2_context *) context;
119   struct dri2_screen *psc = (struct dri2_screen *) context->psc;
120
121   driReleaseDrawables(&pcp->base);
122
123   if (context->xid)
124      glx_send_destroy_context(psc->base.dpy, context->xid);
125
126   if (context->extensions)
127      XFree((char *) context->extensions);
128
129   (*psc->core->destroyContext) (pcp->driContext);
130
131   Xfree(pcp);
132}
133
134static Bool
135dri2_bind_context(struct glx_context *context, struct glx_context *old,
136		  GLXDrawable draw, GLXDrawable 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 *pdraw, *pread;
141   struct dri2_display *pdp;
142
143   pdraw = (struct dri2_drawable *) driFetchDrawable(context, draw);
144   pread = (struct dri2_drawable *) driFetchDrawable(context, read);
145
146   if (pdraw == NULL || pread == NULL)
147      return GLXBadDrawable;
148
149   if (!(*psc->core->bindContext) (pcp->driContext,
150				   pdraw->driDrawable, pread->driDrawable))
151      return GLXBadContext;
152
153   /* If the server doesn't send invalidate events, we may miss a
154    * resize before the rendering starts.  Invalidate the buffers now
155    * so the driver will recheck before rendering starts. */
156   pdp = (struct dri2_display *) psc->base.display;
157   if (!pdp->invalidateAvailable) {
158      dri2InvalidateBuffers(psc->base.dpy, pdraw->base.xDrawable);
159      if (pread != pdraw)
160	 dri2InvalidateBuffers(psc->base.dpy, pread->base.xDrawable);
161   }
162
163   return Success;
164}
165
166static void
167dri2_unbind_context(struct glx_context *context, struct glx_context *new)
168{
169   struct dri2_context *pcp = (struct dri2_context *) context;
170   struct dri2_screen *psc = (struct dri2_screen *) pcp->base.psc;
171
172   (*psc->core->unbindContext) (pcp->driContext);
173
174   if (context == new)
175      driReleaseDrawables(&pcp->base);
176}
177
178static struct glx_context *
179dri2_create_context(struct glx_screen *base,
180		    struct glx_config *config_base,
181		    struct glx_context *shareList, int renderType)
182{
183   struct dri2_context *pcp, *pcp_shared;
184   struct dri2_screen *psc = (struct dri2_screen *) base;
185   __GLXDRIconfigPrivate *config = (__GLXDRIconfigPrivate *) config_base;
186   __DRIcontext *shared = NULL;
187
188   if (shareList) {
189      pcp_shared = (struct dri2_context *) shareList;
190      shared = pcp_shared->driContext;
191   }
192
193   pcp = Xmalloc(sizeof *pcp);
194   if (pcp == NULL)
195      return NULL;
196
197   memset(pcp, 0, sizeof *pcp);
198   if (!glx_context_init(&pcp->base, &psc->base, &config->base)) {
199      Xfree(pcp);
200      return NULL;
201   }
202
203   pcp->driContext =
204      (*psc->dri2->createNewContext) (psc->driScreen,
205                                      config->driConfig, shared, pcp);
206
207   if (pcp->driContext == NULL) {
208      Xfree(pcp);
209      return NULL;
210   }
211
212   pcp->base.vtable = &dri2_context_vtable;
213
214   return &pcp->base;
215}
216
217static void
218dri2DestroyDrawable(__GLXDRIdrawable *base)
219{
220   struct dri2_screen *psc = (struct dri2_screen *) base->psc;
221   struct dri2_drawable *pdraw = (struct dri2_drawable *) base;
222   struct glx_display *dpyPriv = psc->base.display;
223   struct dri2_display *pdp = (struct dri2_display *)dpyPriv->dri2Display;
224
225   __glxHashDelete(pdp->dri2Hash, pdraw->base.xDrawable);
226   (*psc->core->destroyDrawable) (pdraw->driDrawable);
227
228   /* If it's a GLX 1.3 drawables, we can destroy the DRI2 drawable
229    * now, as the application explicitly asked to destroy the GLX
230    * drawable.  Otherwise, for legacy drawables, we let the DRI2
231    * drawable linger on the server, since there's no good way of
232    * knowing when the application is done with it.  The server will
233    * destroy the DRI2 drawable when it destroys the X drawable or the
234    * client exits anyway. */
235   if (pdraw->base.xDrawable != pdraw->base.drawable)
236      DRI2DestroyDrawable(psc->base.dpy, pdraw->base.xDrawable);
237
238   Xfree(pdraw);
239}
240
241static __GLXDRIdrawable *
242dri2CreateDrawable(struct glx_screen *base, XID xDrawable,
243		   GLXDrawable drawable, struct glx_config *config_base)
244{
245   struct dri2_drawable *pdraw;
246   struct dri2_screen *psc = (struct dri2_screen *) base;
247   __GLXDRIconfigPrivate *config = (__GLXDRIconfigPrivate *) config_base;
248   struct glx_display *dpyPriv;
249   struct dri2_display *pdp;
250   GLint vblank_mode = DRI_CONF_VBLANK_DEF_INTERVAL_1;
251
252   pdraw = Xmalloc(sizeof(*pdraw));
253   if (!pdraw)
254      return NULL;
255
256   memset(pdraw, 0, sizeof *pdraw);
257   pdraw->base.destroyDrawable = dri2DestroyDrawable;
258   pdraw->base.xDrawable = xDrawable;
259   pdraw->base.drawable = drawable;
260   pdraw->base.psc = &psc->base;
261   pdraw->bufferCount = 0;
262   pdraw->swap_interval = 1; /* default may be overridden below */
263   pdraw->have_back = 0;
264
265   if (psc->config)
266      psc->config->configQueryi(psc->driScreen,
267				"vblank_mode", &vblank_mode);
268
269   switch (vblank_mode) {
270   case DRI_CONF_VBLANK_NEVER:
271   case DRI_CONF_VBLANK_DEF_INTERVAL_0:
272      pdraw->swap_interval = 0;
273      break;
274   case DRI_CONF_VBLANK_DEF_INTERVAL_1:
275   case DRI_CONF_VBLANK_ALWAYS_SYNC:
276   default:
277      pdraw->swap_interval = 1;
278      break;
279   }
280
281   DRI2CreateDrawable(psc->base.dpy, xDrawable);
282
283   dpyPriv = __glXInitialize(psc->base.dpy);
284   pdp = (struct dri2_display *)dpyPriv->dri2Display;;
285   /* Create a new drawable */
286   pdraw->driDrawable =
287      (*psc->dri2->createNewDrawable) (psc->driScreen,
288                                       config->driConfig, pdraw);
289
290   if (!pdraw->driDrawable) {
291      DRI2DestroyDrawable(psc->base.dpy, xDrawable);
292      Xfree(pdraw);
293      return NULL;
294   }
295
296   if (__glxHashInsert(pdp->dri2Hash, xDrawable, pdraw)) {
297      (*psc->core->destroyDrawable) (pdraw->driDrawable);
298      DRI2DestroyDrawable(psc->base.dpy, xDrawable);
299      Xfree(pdraw);
300      return None;
301   }
302
303
304#ifdef X_DRI2SwapInterval
305   /*
306    * Make sure server has the same swap interval we do for the new
307    * drawable.
308    */
309   if (pdp->swapAvailable)
310      DRI2SwapInterval(psc->base.dpy, xDrawable, pdraw->swap_interval);
311#endif
312
313   return &pdraw->base;
314}
315
316#ifdef X_DRI2GetMSC
317
318static int
319dri2DrawableGetMSC(struct glx_screen *psc, __GLXDRIdrawable *pdraw,
320		   int64_t *ust, int64_t *msc, int64_t *sbc)
321{
322   CARD64 dri2_ust, dri2_msc, dri2_sbc;
323   int ret;
324
325   ret = DRI2GetMSC(psc->dpy, pdraw->xDrawable,
326		    &dri2_ust, &dri2_msc, &dri2_sbc);
327   *ust = dri2_ust;
328   *msc = dri2_msc;
329   *sbc = dri2_sbc;
330
331   return ret;
332}
333
334#endif
335
336
337#ifdef X_DRI2WaitMSC
338
339static int
340dri2WaitForMSC(__GLXDRIdrawable *pdraw, int64_t target_msc, int64_t divisor,
341	       int64_t remainder, int64_t *ust, int64_t *msc, int64_t *sbc)
342{
343   CARD64 dri2_ust, dri2_msc, dri2_sbc;
344   int ret;
345
346   ret = DRI2WaitMSC(pdraw->psc->dpy, pdraw->xDrawable, target_msc, divisor,
347		     remainder, &dri2_ust, &dri2_msc, &dri2_sbc);
348   *ust = dri2_ust;
349   *msc = dri2_msc;
350   *sbc = dri2_sbc;
351
352   return ret;
353}
354
355static int
356dri2WaitForSBC(__GLXDRIdrawable *pdraw, int64_t target_sbc, int64_t *ust,
357	       int64_t *msc, int64_t *sbc)
358{
359   CARD64 dri2_ust, dri2_msc, dri2_sbc;
360   int ret;
361
362   ret = DRI2WaitSBC(pdraw->psc->dpy, pdraw->xDrawable,
363		     target_sbc, &dri2_ust, &dri2_msc, &dri2_sbc);
364   *ust = dri2_ust;
365   *msc = dri2_msc;
366   *sbc = dri2_sbc;
367
368   return ret;
369}
370
371#endif /* X_DRI2WaitMSC */
372
373static void
374dri2CopySubBuffer(__GLXDRIdrawable *pdraw, int x, int y, int width, int height)
375{
376   struct dri2_drawable *priv = (struct dri2_drawable *) pdraw;
377   struct dri2_screen *psc = (struct dri2_screen *) pdraw->psc;
378   XRectangle xrect;
379   XserverRegion region;
380
381   /* Check we have the right attachments */
382   if (!priv->have_back)
383      return;
384
385   xrect.x = x;
386   xrect.y = priv->height - y - height;
387   xrect.width = width;
388   xrect.height = height;
389
390#ifdef __DRI2_FLUSH
391   if (psc->f)
392      (*psc->f->flush) (priv->driDrawable);
393#endif
394
395   region = XFixesCreateRegion(psc->base.dpy, &xrect, 1);
396   DRI2CopyRegion(psc->base.dpy, pdraw->xDrawable, region,
397                  DRI2BufferFrontLeft, DRI2BufferBackLeft);
398
399   /* Refresh the fake front (if present) after we just damaged the real
400    * front.
401    */
402   if (priv->have_fake_front)
403      DRI2CopyRegion(psc->base.dpy, pdraw->xDrawable, region,
404		     DRI2BufferFakeFrontLeft, DRI2BufferFrontLeft);
405
406   XFixesDestroyRegion(psc->base.dpy, region);
407}
408
409static void
410dri2_copy_drawable(struct dri2_drawable *priv, int dest, int src)
411{
412   XRectangle xrect;
413   XserverRegion region;
414   struct dri2_screen *psc = (struct dri2_screen *) priv->base.psc;
415
416   xrect.x = 0;
417   xrect.y = 0;
418   xrect.width = priv->width;
419   xrect.height = priv->height;
420
421#ifdef __DRI2_FLUSH
422   if (psc->f)
423      (*psc->f->flush) (priv->driDrawable);
424#endif
425
426   region = XFixesCreateRegion(psc->base.dpy, &xrect, 1);
427   DRI2CopyRegion(psc->base.dpy, priv->base.xDrawable, region, dest, src);
428   XFixesDestroyRegion(psc->base.dpy, region);
429
430}
431
432static void
433dri2_wait_x(struct glx_context *gc)
434{
435   struct dri2_drawable *priv = (struct dri2_drawable *)
436      GetGLXDRIDrawable(gc->currentDpy, gc->currentDrawable);
437
438   if (priv == NULL || !priv->have_fake_front)
439      return;
440
441   dri2_copy_drawable(priv, DRI2BufferFakeFrontLeft, DRI2BufferFrontLeft);
442}
443
444static void
445dri2_wait_gl(struct glx_context *gc)
446{
447   struct dri2_drawable *priv = (struct dri2_drawable *)
448      GetGLXDRIDrawable(gc->currentDpy, gc->currentDrawable);
449
450   if (priv == NULL || !priv->have_fake_front)
451      return;
452
453   dri2_copy_drawable(priv, DRI2BufferFrontLeft, DRI2BufferFakeFrontLeft);
454}
455
456static void
457dri2FlushFrontBuffer(__DRIdrawable *driDrawable, void *loaderPrivate)
458{
459   struct dri2_drawable *pdraw = loaderPrivate;
460   struct glx_display *priv = __glXInitialize(pdraw->base.psc->dpy);
461   struct dri2_display *pdp = (struct dri2_display *)priv->dri2Display;
462   struct glx_context *gc = __glXGetCurrentContext();
463
464   /* Old servers don't send invalidate events */
465   if (!pdp->invalidateAvailable)
466       dri2InvalidateBuffers(priv->dpy, pdraw->base.xDrawable);
467
468   dri2_wait_gl(gc);
469}
470
471
472static void
473dri2DestroyScreen(struct glx_screen *base)
474{
475   struct dri2_screen *psc = (struct dri2_screen *) base;
476
477   /* Free the direct rendering per screen data */
478   (*psc->core->destroyScreen) (psc->driScreen);
479   driDestroyConfigs(psc->driver_configs);
480   close(psc->fd);
481   Xfree(psc);
482}
483
484/**
485 * Process list of buffer received from the server
486 *
487 * Processes the list of buffers received in a reply from the server to either
488 * \c DRI2GetBuffers or \c DRI2GetBuffersWithFormat.
489 */
490static void
491process_buffers(struct dri2_drawable * pdraw, DRI2Buffer * buffers,
492                unsigned count)
493{
494   int i;
495
496   pdraw->bufferCount = count;
497   pdraw->have_fake_front = 0;
498   pdraw->have_back = 0;
499
500   /* This assumes the DRI2 buffer attachment tokens matches the
501    * __DRIbuffer tokens. */
502   for (i = 0; i < count; i++) {
503      pdraw->buffers[i].attachment = buffers[i].attachment;
504      pdraw->buffers[i].name = buffers[i].name;
505      pdraw->buffers[i].pitch = buffers[i].pitch;
506      pdraw->buffers[i].cpp = buffers[i].cpp;
507      pdraw->buffers[i].flags = buffers[i].flags;
508      if (pdraw->buffers[i].attachment == __DRI_BUFFER_FAKE_FRONT_LEFT)
509         pdraw->have_fake_front = 1;
510      if (pdraw->buffers[i].attachment == __DRI_BUFFER_BACK_LEFT)
511         pdraw->have_back = 1;
512   }
513
514}
515
516unsigned dri2GetSwapEventType(Display* dpy, XID drawable)
517{
518      struct glx_display *glx_dpy = __glXInitialize(dpy);
519      __GLXDRIdrawable *pdraw;
520      pdraw = dri2GetGlxDrawableFromXDrawableId(dpy, drawable);
521      if (!pdraw || !(pdraw->eventMask & GLX_BUFFER_SWAP_COMPLETE_INTEL_MASK))
522         return 0;
523      return glx_dpy->codes->first_event + GLX_BufferSwapComplete;
524}
525
526static int64_t
527dri2SwapBuffers(__GLXDRIdrawable *pdraw, int64_t target_msc, int64_t divisor,
528		int64_t remainder)
529{
530    struct dri2_drawable *priv = (struct dri2_drawable *) pdraw;
531    struct glx_display *dpyPriv = __glXInitialize(priv->base.psc->dpy);
532    struct dri2_screen *psc = (struct dri2_screen *) priv->base.psc;
533    struct dri2_display *pdp =
534	(struct dri2_display *)dpyPriv->dri2Display;
535    CARD64 ret = 0;
536
537#ifdef __DRI2_FLUSH
538    if (psc->f) {
539       struct glx_context *gc = __glXGetCurrentContext();
540
541       if (gc) {
542	  (*psc->f->flush)(priv->driDrawable);
543       }
544    }
545#endif
546
547    /* Old servers don't send invalidate events */
548    if (!pdp->invalidateAvailable)
549       dri2InvalidateBuffers(dpyPriv->dpy, pdraw->xDrawable);
550
551    /* Old servers can't handle swapbuffers */
552    if (!pdp->swapAvailable) {
553       dri2CopySubBuffer(pdraw, 0, 0, priv->width, priv->height);
554       return 0;
555    }
556
557#ifdef X_DRI2SwapBuffers
558    DRI2SwapBuffers(psc->base.dpy, pdraw->xDrawable, target_msc, divisor,
559		    remainder, &ret);
560#endif
561
562    return ret;
563}
564
565static __DRIbuffer *
566dri2GetBuffers(__DRIdrawable * driDrawable,
567               int *width, int *height,
568               unsigned int *attachments, int count,
569               int *out_count, void *loaderPrivate)
570{
571   struct dri2_drawable *pdraw = loaderPrivate;
572   DRI2Buffer *buffers;
573
574   buffers = DRI2GetBuffers(pdraw->base.psc->dpy, pdraw->base.xDrawable,
575                            width, height, attachments, count, out_count);
576   if (buffers == NULL)
577      return NULL;
578
579   pdraw->width = *width;
580   pdraw->height = *height;
581   process_buffers(pdraw, buffers, *out_count);
582
583   Xfree(buffers);
584
585   return pdraw->buffers;
586}
587
588static __DRIbuffer *
589dri2GetBuffersWithFormat(__DRIdrawable * driDrawable,
590                         int *width, int *height,
591                         unsigned int *attachments, int count,
592                         int *out_count, void *loaderPrivate)
593{
594   struct dri2_drawable *pdraw = loaderPrivate;
595   DRI2Buffer *buffers;
596
597   buffers = DRI2GetBuffersWithFormat(pdraw->base.psc->dpy,
598                                      pdraw->base.xDrawable,
599                                      width, height, attachments,
600                                      count, out_count);
601   if (buffers == NULL)
602      return NULL;
603
604   pdraw->width = *width;
605   pdraw->height = *height;
606   process_buffers(pdraw, buffers, *out_count);
607
608   Xfree(buffers);
609
610   return pdraw->buffers;
611}
612
613#ifdef X_DRI2SwapInterval
614
615static int
616dri2SetSwapInterval(__GLXDRIdrawable *pdraw, int interval)
617{
618   struct dri2_drawable *priv =  (struct dri2_drawable *) pdraw;
619   GLint vblank_mode = DRI_CONF_VBLANK_DEF_INTERVAL_1;
620   struct dri2_screen *psc = (struct dri2_screen *) priv->base.psc;
621
622   if (psc->config)
623      psc->config->configQueryi(psc->driScreen,
624				"vblank_mode", &vblank_mode);
625
626   switch (vblank_mode) {
627   case DRI_CONF_VBLANK_NEVER:
628      return GLX_BAD_VALUE;
629   case DRI_CONF_VBLANK_ALWAYS_SYNC:
630      if (interval <= 0)
631	 return GLX_BAD_VALUE;
632      break;
633   default:
634      break;
635   }
636
637   DRI2SwapInterval(priv->base.psc->dpy, priv->base.xDrawable, interval);
638   priv->swap_interval = interval;
639
640   return 0;
641}
642
643static int
644dri2GetSwapInterval(__GLXDRIdrawable *pdraw)
645{
646   struct dri2_drawable *priv =  (struct dri2_drawable *) pdraw;
647
648  return priv->swap_interval;
649}
650
651#endif /* X_DRI2SwapInterval */
652
653static const __DRIdri2LoaderExtension dri2LoaderExtension = {
654   {__DRI_DRI2_LOADER, __DRI_DRI2_LOADER_VERSION},
655   dri2GetBuffers,
656   dri2FlushFrontBuffer,
657   dri2GetBuffersWithFormat,
658};
659
660static const __DRIdri2LoaderExtension dri2LoaderExtension_old = {
661   {__DRI_DRI2_LOADER, __DRI_DRI2_LOADER_VERSION},
662   dri2GetBuffers,
663   dri2FlushFrontBuffer,
664   NULL,
665};
666
667#ifdef __DRI_USE_INVALIDATE
668static const __DRIuseInvalidateExtension dri2UseInvalidate = {
669   { __DRI_USE_INVALIDATE, __DRI_USE_INVALIDATE_VERSION }
670};
671#endif
672
673_X_HIDDEN void
674dri2InvalidateBuffers(Display *dpy, XID drawable)
675{
676   __GLXDRIdrawable *pdraw =
677      dri2GetGlxDrawableFromXDrawableId(dpy, drawable);
678   struct dri2_screen *psc;
679   struct dri2_drawable *pdp = (struct dri2_drawable *) pdraw;
680
681   if (!pdraw)
682      return;
683
684   psc = (struct dri2_screen *) pdraw->psc;
685
686#if __DRI2_FLUSH_VERSION >= 3
687   if (pdraw && psc->f && psc->f->base.version >= 3 && psc->f->invalidate)
688       psc->f->invalidate(pdp->driDrawable);
689#endif
690}
691
692static void
693dri2_bind_tex_image(Display * dpy,
694		    GLXDrawable drawable,
695		    int buffer, const int *attrib_list)
696{
697   struct glx_context *gc = __glXGetCurrentContext();
698   struct dri2_context *pcp = (struct dri2_context *) gc;
699   __GLXDRIdrawable *base = GetGLXDRIDrawable(dpy, drawable);
700   struct glx_display *dpyPriv = __glXInitialize(dpy);
701   struct dri2_drawable *pdraw = (struct dri2_drawable *) base;
702   struct dri2_display *pdp =
703      (struct dri2_display *) dpyPriv->dri2Display;
704   struct dri2_screen *psc;
705
706   if (pdraw != NULL) {
707      psc = (struct dri2_screen *) base->psc;
708
709#if __DRI2_FLUSH_VERSION >= 3
710      if (!pdp->invalidateAvailable && psc->f &&
711           psc->f->base.version >= 3 && psc->f->invalidate)
712	 psc->f->invalidate(pdraw->driDrawable);
713#endif
714
715      if (psc->texBuffer->base.version >= 2 &&
716	  psc->texBuffer->setTexBuffer2 != NULL) {
717	 (*psc->texBuffer->setTexBuffer2) (pcp->driContext,
718					   pdraw->base.textureTarget,
719					   pdraw->base.textureFormat,
720					   pdraw->driDrawable);
721      }
722      else {
723	 (*psc->texBuffer->setTexBuffer) (pcp->driContext,
724					  pdraw->base.textureTarget,
725					  pdraw->driDrawable);
726      }
727   }
728}
729
730static void
731dri2_release_tex_image(Display * dpy, GLXDrawable drawable, int buffer)
732{
733#if __DRI_TEX_BUFFER_VERSION >= 3
734   struct glx_context *gc = __glXGetCurrentContext();
735   struct dri2_context *pcp = (struct dri2_context *) gc;
736   __GLXDRIdrawable *base = GetGLXDRIDrawable(dpy, drawable);
737   struct glx_display *dpyPriv = __glXInitialize(dpy);
738   struct dri2_drawable *pdraw = (struct dri2_drawable *) base;
739   struct dri2_display *pdp =
740      (struct dri2_display *) dpyPriv->dri2Display;
741   struct dri2_screen *psc;
742
743   if (pdraw != NULL) {
744      psc = (struct dri2_screen *) base->psc;
745
746      if (psc->texBuffer->base.version >= 3 &&
747          psc->texBuffer->releaseTexBuffer != NULL) {
748         (*psc->texBuffer->releaseTexBuffer) (pcp->driContext,
749                                           pdraw->base.textureTarget,
750                                           pdraw->driDrawable);
751      }
752   }
753#endif
754}
755
756static const struct glx_context_vtable dri2_context_vtable = {
757   dri2_destroy_context,
758   dri2_bind_context,
759   dri2_unbind_context,
760   dri2_wait_gl,
761   dri2_wait_x,
762   DRI_glXUseXFont,
763   dri2_bind_tex_image,
764   dri2_release_tex_image,
765};
766
767static void
768dri2BindExtensions(struct dri2_screen *psc, const __DRIextension **extensions)
769{
770   int i;
771
772   __glXEnableDirectExtension(&psc->base, "GLX_SGI_video_sync");
773   __glXEnableDirectExtension(&psc->base, "GLX_SGI_swap_control");
774   __glXEnableDirectExtension(&psc->base, "GLX_MESA_swap_control");
775   __glXEnableDirectExtension(&psc->base, "GLX_SGI_make_current_read");
776
777   /* FIXME: if DRI2 version supports it... */
778   __glXEnableDirectExtension(&psc->base, "INTEL_swap_event");
779
780   for (i = 0; extensions[i]; i++) {
781      if ((strcmp(extensions[i]->name, __DRI_TEX_BUFFER) == 0)) {
782	 psc->texBuffer = (__DRItexBufferExtension *) extensions[i];
783	 __glXEnableDirectExtension(&psc->base, "GLX_EXT_texture_from_pixmap");
784      }
785
786      if ((strcmp(extensions[i]->name, __DRI2_FLUSH) == 0)) {
787	 psc->f = (__DRI2flushExtension *) extensions[i];
788	 /* internal driver extension, no GL extension exposed */
789      }
790
791      if ((strcmp(extensions[i]->name, __DRI2_CONFIG_QUERY) == 0))
792	 psc->config = (__DRI2configQueryExtension *) extensions[i];
793   }
794}
795
796static const struct glx_screen_vtable dri2_screen_vtable = {
797   dri2_create_context
798};
799
800static struct glx_screen *
801dri2CreateScreen(int screen, struct glx_display * priv)
802{
803   const __DRIconfig **driver_configs;
804   const __DRIextension **extensions;
805   const struct dri2_display *const pdp = (struct dri2_display *)
806      priv->dri2Display;
807   struct dri2_screen *psc;
808   __GLXDRIscreen *psp;
809   char *driverName, *deviceName;
810   drm_magic_t magic;
811   int i;
812
813   psc = Xmalloc(sizeof *psc);
814   if (psc == NULL)
815      return NULL;
816
817   memset(psc, 0, sizeof *psc);
818   psc->fd = -1;
819
820   if (!glx_screen_init(&psc->base, screen, priv)) {
821      Xfree(psc);
822      return NULL;
823   }
824
825   if (!DRI2Connect(priv->dpy, RootWindow(priv->dpy, screen),
826		    &driverName, &deviceName)) {
827      glx_screen_cleanup(&psc->base);
828      XFree(psc);
829      return NULL;
830   }
831
832   psc->driver = driOpenDriver(driverName);
833   if (psc->driver == NULL) {
834      ErrorMessageF("driver pointer missing\n");
835      goto handle_error;
836   }
837
838   extensions = dlsym(psc->driver, __DRI_DRIVER_EXTENSIONS);
839   if (extensions == NULL) {
840      ErrorMessageF("driver exports no extensions (%s)\n", dlerror());
841      goto handle_error;
842   }
843
844   for (i = 0; extensions[i]; i++) {
845      if (strcmp(extensions[i]->name, __DRI_CORE) == 0)
846	 psc->core = (__DRIcoreExtension *) extensions[i];
847      if (strcmp(extensions[i]->name, __DRI_DRI2) == 0)
848	 psc->dri2 = (__DRIdri2Extension *) extensions[i];
849   }
850
851   if (psc->core == NULL || psc->dri2 == NULL) {
852      ErrorMessageF("core dri or dri2 extension not found\n");
853      goto handle_error;
854   }
855
856   psc->fd = open(deviceName, O_RDWR);
857   if (psc->fd < 0) {
858      ErrorMessageF("failed to open drm device: %s\n", strerror(errno));
859      goto handle_error;
860   }
861
862   if (drmGetMagic(psc->fd, &magic)) {
863      ErrorMessageF("failed to get magic\n");
864      goto handle_error;
865   }
866
867   if (!DRI2Authenticate(priv->dpy, RootWindow(priv->dpy, screen), magic)) {
868      ErrorMessageF("failed to authenticate magic %d\n", magic);
869      goto handle_error;
870   }
871
872
873   /* If the server does not support the protocol for
874    * DRI2GetBuffersWithFormat, don't supply that interface to the driver.
875    */
876   psc->driScreen =
877      psc->dri2->createNewScreen(screen, psc->fd,
878				 (const __DRIextension **)
879				 &pdp->loader_extensions[0],
880				 &driver_configs, psc);
881
882   if (psc->driScreen == NULL) {
883      ErrorMessageF("failed to create dri screen\n");
884      goto handle_error;
885   }
886
887   extensions = psc->core->getExtensions(psc->driScreen);
888   dri2BindExtensions(psc, extensions);
889
890   psc->base.configs =
891      driConvertConfigs(psc->core, psc->base.configs, driver_configs);
892   psc->base.visuals =
893      driConvertConfigs(psc->core, psc->base.visuals, driver_configs);
894
895   psc->driver_configs = driver_configs;
896
897   psc->base.vtable = &dri2_screen_vtable;
898   psp = &psc->vtable;
899   psc->base.driScreen = psp;
900   psp->destroyScreen = dri2DestroyScreen;
901   psp->createDrawable = dri2CreateDrawable;
902   psp->swapBuffers = dri2SwapBuffers;
903   psp->getDrawableMSC = NULL;
904   psp->waitForMSC = NULL;
905   psp->waitForSBC = NULL;
906   psp->setSwapInterval = NULL;
907   psp->getSwapInterval = NULL;
908
909   if (pdp->driMinor >= 2) {
910#ifdef X_DRI2GetMSC
911      psp->getDrawableMSC = dri2DrawableGetMSC;
912#endif
913#ifdef X_DRI2WaitMSC
914      psp->waitForMSC = dri2WaitForMSC;
915      psp->waitForSBC = dri2WaitForSBC;
916#endif
917#ifdef X_DRI2SwapInterval
918      psp->setSwapInterval = dri2SetSwapInterval;
919      psp->getSwapInterval = dri2GetSwapInterval;
920#endif
921#if defined(X_DRI2GetMSC) && defined(X_DRI2WaitMSC) && defined(X_DRI2SwapInterval)
922      __glXEnableDirectExtension(&psc->base, "GLX_OML_sync_control");
923#endif
924   }
925
926   /* DRI2 suports SubBuffer through DRI2CopyRegion, so it's always
927    * available.*/
928   psp->copySubBuffer = dri2CopySubBuffer;
929   __glXEnableDirectExtension(&psc->base, "GLX_MESA_copy_sub_buffer");
930
931   Xfree(driverName);
932   Xfree(deviceName);
933
934   return &psc->base;
935
936handle_error:
937   if (psc->fd >= 0)
938      close(psc->fd);
939   if (psc->driver)
940      dlclose(psc->driver);
941   Xfree(driverName);
942   Xfree(deviceName);
943   glx_screen_cleanup(&psc->base);
944   XFree(psc);
945
946   return NULL;
947}
948
949/* Called from __glXFreeDisplayPrivate.
950 */
951static void
952dri2DestroyDisplay(__GLXDRIdisplay * dpy)
953{
954   struct dri2_display *pdp = (struct dri2_display *) dpy;
955
956   __glxHashDestroy(pdp->dri2Hash);
957   Xfree(dpy);
958}
959
960_X_HIDDEN __GLXDRIdrawable *
961dri2GetGlxDrawableFromXDrawableId(Display *dpy, XID id)
962{
963   struct glx_display *d = __glXInitialize(dpy);
964   struct dri2_display *pdp = (struct dri2_display *) d->dri2Display;
965   __GLXDRIdrawable *pdraw;
966
967   if (__glxHashLookup(pdp->dri2Hash, id, (void *) &pdraw) == 0)
968      return pdraw;
969
970   return NULL;
971}
972
973/*
974 * Allocate, initialize and return a __DRIdisplayPrivate object.
975 * This is called from __glXInitialize() when we are given a new
976 * display pointer.
977 */
978_X_HIDDEN __GLXDRIdisplay *
979dri2CreateDisplay(Display * dpy)
980{
981   struct dri2_display *pdp;
982   int eventBase, errorBase, i;
983
984   if (!DRI2QueryExtension(dpy, &eventBase, &errorBase))
985      return NULL;
986
987   pdp = Xmalloc(sizeof *pdp);
988   if (pdp == NULL)
989      return NULL;
990
991   if (!DRI2QueryVersion(dpy, &pdp->driMajor, &pdp->driMinor)) {
992      Xfree(pdp);
993      return NULL;
994   }
995
996   pdp->driPatch = 0;
997   pdp->swapAvailable = (pdp->driMinor >= 2);
998   pdp->invalidateAvailable = (pdp->driMinor >= 3);
999
1000   pdp->base.destroyDisplay = dri2DestroyDisplay;
1001   pdp->base.createScreen = dri2CreateScreen;
1002
1003   i = 0;
1004   if (pdp->driMinor < 1)
1005      pdp->loader_extensions[i++] = &dri2LoaderExtension_old.base;
1006   else
1007      pdp->loader_extensions[i++] = &dri2LoaderExtension.base;
1008
1009   pdp->loader_extensions[i++] = &systemTimeExtension.base;
1010
1011#ifdef __DRI_USE_INVALIDATE
1012   pdp->loader_extensions[i++] = &dri2UseInvalidate.base;
1013#endif
1014   pdp->loader_extensions[i++] = NULL;
1015
1016   pdp->dri2Hash = __glxHashCreate();
1017   if (pdp->dri2Hash == NULL) {
1018      Xfree(pdp);
1019      return NULL;
1020   }
1021
1022   return &pdp->base;
1023}
1024
1025#endif /* GLX_DIRECT_RENDERING */
1026