xref: /third_party/mesa3d/src/glx/dri2.c (revision bf215546) 
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
34#ifdef GLX_DIRECT_RENDERING
35
36#include <stdio.h>
37#include <X11/Xlibint.h>
38#include <X11/extensions/Xext.h>
39#include <X11/extensions/extutil.h>
40#include <X11/extensions/dri2proto.h>
41#include "dri2.h"
42#include "glxclient.h"
43#include "GL/glxext.h"
44
45/* Allow the build to work with an older versions of dri2proto.h and
46 * dri2tokens.h.
47 */
48#if DRI2_MINOR < 1
49#undef DRI2_MINOR
50#define DRI2_MINOR 1
51#define X_DRI2GetBuffersWithFormat 7
52#endif
53
54
55static char dri2ExtensionName[] = DRI2_NAME;
56static XExtensionInfo _dri2Info_data;
57static XExtensionInfo *dri2Info = &_dri2Info_data;
58static XEXT_GENERATE_CLOSE_DISPLAY (DRI2CloseDisplay, dri2Info)
59
60static Bool
61DRI2WireToEvent(Display *dpy, XEvent *event, xEvent *wire);
62static Status
63DRI2EventToWire(Display *dpy, XEvent *event, xEvent *wire);
64static int
65DRI2Error(Display *display, xError *err, XExtCodes *codes, int *ret_code);
66
67static /* const */ XExtensionHooks dri2ExtensionHooks = {
68  NULL,                   /* create_gc */
69  NULL,                   /* copy_gc */
70  NULL,                   /* flush_gc */
71  NULL,                   /* free_gc */
72  NULL,                   /* create_font */
73  NULL,                   /* free_font */
74  DRI2CloseDisplay,       /* close_display */
75  DRI2WireToEvent,        /* wire_to_event */
76  DRI2EventToWire,        /* event_to_wire */
77  DRI2Error,              /* error */
78  NULL,                   /* error_string */
79};
80
81static XEXT_GENERATE_FIND_DISPLAY (DRI2FindDisplay,
82                                   dri2Info,
83                                   dri2ExtensionName,
84                                   &dri2ExtensionHooks,
85                                   0, NULL)
86
87static Bool
88DRI2WireToEvent(Display *dpy, XEvent *event, xEvent *wire)
89{
90   XExtDisplayInfo *info = DRI2FindDisplay(dpy);
91   struct glx_drawable *glxDraw;
92
93   XextCheckExtension(dpy, info, dri2ExtensionName, False);
94
95   switch ((wire->u.u.type & 0x7f) - info->codes->first_event) {
96
97   case DRI2_BufferSwapComplete:
98   {
99      GLXBufferSwapComplete *aevent = (GLXBufferSwapComplete *)event;
100      xDRI2BufferSwapComplete2 *awire = (xDRI2BufferSwapComplete2 *)wire;
101      __GLXDRIdrawable *pdraw;
102
103      pdraw = dri2GetGlxDrawableFromXDrawableId(dpy, awire->drawable);
104      if (pdraw == NULL)
105         return False;
106
107      /* Ignore swap events if we're not looking for them */
108      aevent->type = dri2GetSwapEventType(dpy, awire->drawable);
109      if(!aevent->type)
110         return False;
111
112      aevent->serial = _XSetLastRequestRead(dpy, (xGenericReply *) wire);
113      aevent->send_event = (awire->type & 0x80) != 0;
114      aevent->display = dpy;
115      aevent->drawable = awire->drawable;
116      switch (awire->event_type) {
117      case DRI2_EXCHANGE_COMPLETE:
118	 aevent->event_type = GLX_EXCHANGE_COMPLETE_INTEL;
119	 break;
120      case DRI2_BLIT_COMPLETE:
121	 aevent->event_type = GLX_COPY_COMPLETE_INTEL;
122	 break;
123      case DRI2_FLIP_COMPLETE:
124	 aevent->event_type = GLX_FLIP_COMPLETE_INTEL;
125	 break;
126      default:
127	 /* unknown swap completion type */
128	 return False;
129      }
130      aevent->ust = ((CARD64)awire->ust_hi << 32) | awire->ust_lo;
131      aevent->msc = ((CARD64)awire->msc_hi << 32) | awire->msc_lo;
132
133      glxDraw = GetGLXDrawable(dpy, pdraw->drawable);
134      if (glxDraw != NULL) {
135         if (awire->sbc < glxDraw->lastEventSbc)
136            glxDraw->eventSbcWrap += 0x100000000;
137         glxDraw->lastEventSbc = awire->sbc;
138         aevent->sbc = awire->sbc + glxDraw->eventSbcWrap;
139      } else {
140         aevent->sbc = awire->sbc;
141      }
142
143      return True;
144   }
145   case DRI2_InvalidateBuffers:
146   {
147      xDRI2InvalidateBuffers *awire = (xDRI2InvalidateBuffers *)wire;
148
149      dri2InvalidateBuffers(dpy, awire->drawable);
150      return False;
151   }
152   default:
153      /* client doesn't support server event */
154      break;
155   }
156
157   return False;
158}
159
160/* We don't actually support this.  It doesn't make sense for clients to
161 * send each other DRI2 events.
162 */
163static Status
164DRI2EventToWire(Display *dpy, XEvent *event, xEvent *wire)
165{
166   XExtDisplayInfo *info = DRI2FindDisplay(dpy);
167
168   XextCheckExtension(dpy, info, dri2ExtensionName, False);
169
170   switch (event->type) {
171   default:
172      /* client doesn't support server event */
173      break;
174   }
175
176   return Success;
177}
178
179static int
180DRI2Error(Display *display, xError *err, XExtCodes *codes, int *ret_code)
181{
182    if (err->majorCode == codes->major_opcode &&
183	err->errorCode == BadDrawable &&
184	err->minorCode == X_DRI2CopyRegion)
185	return True;
186
187    /* If the X drawable was destroyed before the GLX drawable, the
188     * DRI2 drawble will be gone by the time we call
189     * DRI2DestroyDrawable.  So just ignore BadDrawable here. */
190    if (err->majorCode == codes->major_opcode &&
191	err->errorCode == BadDrawable &&
192	err->minorCode == X_DRI2DestroyDrawable)
193	return True;
194
195    /* If the server is non-local DRI2Connect will raise BadRequest.
196     * Swallow this so that DRI2Connect can signal this in its return code */
197    if (err->majorCode == codes->major_opcode &&
198        err->minorCode == X_DRI2Connect &&
199        err->errorCode == BadRequest) {
200	*ret_code = False;
201	return True;
202    }
203
204    return False;
205}
206
207Bool
208DRI2QueryExtension(Display * dpy, int *eventBase, int *errorBase)
209{
210   XExtDisplayInfo *info = DRI2FindDisplay(dpy);
211
212   if (XextHasExtension(info)) {
213      *eventBase = info->codes->first_event;
214      *errorBase = info->codes->first_error;
215      return True;
216   }
217
218   return False;
219}
220
221Bool
222DRI2QueryVersion(Display * dpy, int *major, int *minor)
223{
224   XExtDisplayInfo *info = DRI2FindDisplay(dpy);
225   xDRI2QueryVersionReply rep;
226   xDRI2QueryVersionReq *req;
227   int i, nevents;
228
229   XextCheckExtension(dpy, info, dri2ExtensionName, False);
230
231   LockDisplay(dpy);
232   GetReq(DRI2QueryVersion, req);
233   req->reqType = info->codes->major_opcode;
234   req->dri2ReqType = X_DRI2QueryVersion;
235   req->majorVersion = DRI2_MAJOR;
236   req->minorVersion = DRI2_MINOR;
237   if (!_XReply(dpy, (xReply *) & rep, 0, xFalse)) {
238      UnlockDisplay(dpy);
239      SyncHandle();
240      return False;
241   }
242   *major = rep.majorVersion;
243   *minor = rep.minorVersion;
244   UnlockDisplay(dpy);
245   SyncHandle();
246
247   switch (rep.minorVersion) {
248   case 1:
249	   nevents = 0;
250	   break;
251   case 2:
252	   nevents = 1;
253	   break;
254   case 3:
255   default:
256	   nevents = 2;
257	   break;
258   }
259
260   for (i = 0; i < nevents; i++) {
261       XESetWireToEvent (dpy, info->codes->first_event + i, DRI2WireToEvent);
262       XESetEventToWire (dpy, info->codes->first_event + i, DRI2EventToWire);
263   }
264
265   return True;
266}
267
268Bool
269DRI2Connect(Display * dpy, XID window, char **driverName, char **deviceName)
270{
271   XExtDisplayInfo *info = DRI2FindDisplay(dpy);
272   xDRI2ConnectReply rep;
273   xDRI2ConnectReq *req;
274
275   XextCheckExtension(dpy, info, dri2ExtensionName, False);
276
277   LockDisplay(dpy);
278   GetReq(DRI2Connect, req);
279   req->reqType = info->codes->major_opcode;
280   req->dri2ReqType = X_DRI2Connect;
281   req->window = window;
282
283   req->driverType = DRI2DriverDRI;
284   {
285      char *prime = getenv("DRI_PRIME");
286      if (prime) {
287         uint32_t primeid;
288         errno = 0;
289         primeid = strtoul(prime, NULL, 0);
290         if (errno == 0)
291            req->driverType |=
292               ((primeid & DRI2DriverPrimeMask) << DRI2DriverPrimeShift);
293      }
294   }
295
296   if (!_XReply(dpy, (xReply *) & rep, 0, xFalse)) {
297      UnlockDisplay(dpy);
298      SyncHandle();
299      return False;
300   }
301
302   if (rep.driverNameLength == 0 && rep.deviceNameLength == 0) {
303      UnlockDisplay(dpy);
304      SyncHandle();
305      return False;
306   }
307
308   *driverName = malloc(rep.driverNameLength + 1);
309   if (*driverName == NULL) {
310      _XEatData(dpy,
311                ((rep.driverNameLength + 3) & ~3) +
312                ((rep.deviceNameLength + 3) & ~3));
313      UnlockDisplay(dpy);
314      SyncHandle();
315      return False;
316   }
317   _XReadPad(dpy, *driverName, rep.driverNameLength);
318   (*driverName)[rep.driverNameLength] = '\0';
319
320   *deviceName = malloc(rep.deviceNameLength + 1);
321   if (*deviceName == NULL) {
322      free(*driverName);
323      _XEatData(dpy, ((rep.deviceNameLength + 3) & ~3));
324      UnlockDisplay(dpy);
325      SyncHandle();
326      return False;
327   }
328   _XReadPad(dpy, *deviceName, rep.deviceNameLength);
329   (*deviceName)[rep.deviceNameLength] = '\0';
330
331   UnlockDisplay(dpy);
332   SyncHandle();
333
334   return True;
335}
336
337Bool
338DRI2Authenticate(Display * dpy, XID window, drm_magic_t magic)
339{
340   XExtDisplayInfo *info = DRI2FindDisplay(dpy);
341   xDRI2AuthenticateReq *req;
342   xDRI2AuthenticateReply rep;
343
344   XextCheckExtension(dpy, info, dri2ExtensionName, False);
345
346   LockDisplay(dpy);
347   GetReq(DRI2Authenticate, req);
348   req->reqType = info->codes->major_opcode;
349   req->dri2ReqType = X_DRI2Authenticate;
350   req->window = window;
351   req->magic = magic;
352
353   if (!_XReply(dpy, (xReply *) & rep, 0, xFalse)) {
354      UnlockDisplay(dpy);
355      SyncHandle();
356      return False;
357   }
358
359   UnlockDisplay(dpy);
360   SyncHandle();
361
362   return rep.authenticated;
363}
364
365void
366DRI2CreateDrawable(Display * dpy, XID drawable)
367{
368   XExtDisplayInfo *info = DRI2FindDisplay(dpy);
369   xDRI2CreateDrawableReq *req;
370
371   XextSimpleCheckExtension(dpy, info, dri2ExtensionName);
372
373   LockDisplay(dpy);
374   GetReq(DRI2CreateDrawable, req);
375   req->reqType = info->codes->major_opcode;
376   req->dri2ReqType = X_DRI2CreateDrawable;
377   req->drawable = drawable;
378   UnlockDisplay(dpy);
379   SyncHandle();
380}
381
382void
383DRI2DestroyDrawable(Display * dpy, XID drawable)
384{
385   XExtDisplayInfo *info = DRI2FindDisplay(dpy);
386   xDRI2DestroyDrawableReq *req;
387
388   XextSimpleCheckExtension(dpy, info, dri2ExtensionName);
389
390   XSync(dpy, False);
391
392   LockDisplay(dpy);
393   GetReq(DRI2DestroyDrawable, req);
394   req->reqType = info->codes->major_opcode;
395   req->dri2ReqType = X_DRI2DestroyDrawable;
396   req->drawable = drawable;
397   UnlockDisplay(dpy);
398   SyncHandle();
399}
400
401DRI2Buffer *
402DRI2GetBuffers(Display * dpy, XID drawable,
403               int *width, int *height,
404               unsigned int *attachments, int count, int *outCount)
405{
406   XExtDisplayInfo *info = DRI2FindDisplay(dpy);
407   xDRI2GetBuffersReply rep;
408   xDRI2GetBuffersReq *req;
409   DRI2Buffer *buffers;
410   xDRI2Buffer repBuffer;
411   CARD32 *p;
412   int i;
413
414   XextCheckExtension(dpy, info, dri2ExtensionName, NULL);
415
416   LockDisplay(dpy);
417   GetReqExtra(DRI2GetBuffers, count * 4, req);
418   req->reqType = info->codes->major_opcode;
419   req->dri2ReqType = X_DRI2GetBuffers;
420   req->drawable = drawable;
421   req->count = count;
422   p = (CARD32 *) & req[1];
423   for (i = 0; i < count; i++)
424      p[i] = attachments[i];
425
426   if (!_XReply(dpy, (xReply *) & rep, 0, xFalse)) {
427      UnlockDisplay(dpy);
428      SyncHandle();
429      return NULL;
430   }
431
432   *width = rep.width;
433   *height = rep.height;
434   *outCount = rep.count;
435
436   buffers = malloc(rep.count * sizeof buffers[0]);
437   if (buffers == NULL) {
438      _XEatData(dpy, rep.count * sizeof repBuffer);
439      UnlockDisplay(dpy);
440      SyncHandle();
441      return NULL;
442   }
443
444   for (i = 0; i < rep.count; i++) {
445      _XReadPad(dpy, (char *) &repBuffer, sizeof repBuffer);
446      buffers[i].attachment = repBuffer.attachment;
447      buffers[i].name = repBuffer.name;
448      buffers[i].pitch = repBuffer.pitch;
449      buffers[i].cpp = repBuffer.cpp;
450      buffers[i].flags = repBuffer.flags;
451   }
452
453   UnlockDisplay(dpy);
454   SyncHandle();
455
456   return buffers;
457}
458
459
460DRI2Buffer *
461DRI2GetBuffersWithFormat(Display * dpy, XID drawable,
462                         int *width, int *height,
463                         unsigned int *attachments, int count, int *outCount)
464{
465   XExtDisplayInfo *info = DRI2FindDisplay(dpy);
466   xDRI2GetBuffersReply rep;
467   xDRI2GetBuffersReq *req;
468   DRI2Buffer *buffers;
469   xDRI2Buffer repBuffer;
470   CARD32 *p;
471   int i;
472
473   XextCheckExtension(dpy, info, dri2ExtensionName, NULL);
474
475   LockDisplay(dpy);
476   GetReqExtra(DRI2GetBuffers, count * (4 * 2), req);
477   req->reqType = info->codes->major_opcode;
478   req->dri2ReqType = X_DRI2GetBuffersWithFormat;
479   req->drawable = drawable;
480   req->count = count;
481   p = (CARD32 *) & req[1];
482   for (i = 0; i < (count * 2); i++)
483      p[i] = attachments[i];
484
485   if (!_XReply(dpy, (xReply *) & rep, 0, xFalse)) {
486      UnlockDisplay(dpy);
487      SyncHandle();
488      return NULL;
489   }
490
491   *width = rep.width;
492   *height = rep.height;
493   *outCount = rep.count;
494
495   buffers = malloc(rep.count * sizeof buffers[0]);
496   if (buffers == NULL) {
497      _XEatData(dpy, rep.count * sizeof repBuffer);
498      UnlockDisplay(dpy);
499      SyncHandle();
500      return NULL;
501   }
502
503   for (i = 0; i < rep.count; i++) {
504      _XReadPad(dpy, (char *) &repBuffer, sizeof repBuffer);
505      buffers[i].attachment = repBuffer.attachment;
506      buffers[i].name = repBuffer.name;
507      buffers[i].pitch = repBuffer.pitch;
508      buffers[i].cpp = repBuffer.cpp;
509      buffers[i].flags = repBuffer.flags;
510   }
511
512   UnlockDisplay(dpy);
513   SyncHandle();
514
515   return buffers;
516}
517
518
519void
520DRI2CopyRegion(Display * dpy, XID drawable, XserverRegion region,
521               CARD32 dest, CARD32 src)
522{
523   XExtDisplayInfo *info = DRI2FindDisplay(dpy);
524   xDRI2CopyRegionReq *req;
525   xDRI2CopyRegionReply rep;
526
527   XextSimpleCheckExtension(dpy, info, dri2ExtensionName);
528
529   LockDisplay(dpy);
530   GetReq(DRI2CopyRegion, req);
531   req->reqType = info->codes->major_opcode;
532   req->dri2ReqType = X_DRI2CopyRegion;
533   req->drawable = drawable;
534   req->region = region;
535   req->dest = dest;
536   req->src = src;
537
538   _XReply(dpy, (xReply *) & rep, 0, xFalse);
539
540   UnlockDisplay(dpy);
541   SyncHandle();
542}
543
544#endif /* GLX_DIRECT_RENDERING */
545