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glx: Don't do the implicit glFlush in SwapBuffers if it's the wrong drawable.
[mesa.git] / src / glx / glxcmds.c
1 /*
2 * SGI FREE SOFTWARE LICENSE B (Version 2.0, Sept. 18, 2008)
3 * Copyright (C) 1991-2000 Silicon Graphics, Inc. All Rights Reserved.
4 *
5 * Permission is hereby granted, free of charge, to any person obtaining a
6 * copy of this software and associated documentation files (the "Software"),
7 * to deal in the Software without restriction, including without limitation
8 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
9 * and/or sell copies of the Software, and to permit persons to whom the
10 * Software is furnished to do so, subject to the following conditions:
11 *
12 * The above copyright notice including the dates of first publication and
13 * either this permission notice or a reference to
14 * http://oss.sgi.com/projects/FreeB/
15 * shall be included in all copies or substantial portions of the Software.
16 *
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
18 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
20 * SILICON GRAPHICS, INC. BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
21 * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
22 * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
23 * SOFTWARE.
24 *
25 * Except as contained in this notice, the name of Silicon Graphics, Inc.
26 * shall not be used in advertising or otherwise to promote the sale, use or
27 * other dealings in this Software without prior written authorization from
28 * Silicon Graphics, Inc.
29 */
30
31 /**
32 * \file glxcmds.c
33 * Client-side GLX interface.
34 */
35
36 #include "glxclient.h"
37 #include "glapi.h"
38 #include "glxextensions.h"
39 #include "indirect.h"
40
41 #ifdef GLX_DIRECT_RENDERING
42 #ifdef GLX_USE_APPLEGL
43 #include "apple_glx_context.h"
44 #include "apple_glx.h"
45 #include "glx_error.h"
46 #else
47 #include <sys/time.h>
48 #ifdef XF86VIDMODE
49 #include <X11/extensions/xf86vmode.h>
50 #endif
51 #include "xf86dri.h"
52 #endif
53 #else
54 #endif
55
56 #if defined(USE_XCB)
57 #include <X11/Xlib-xcb.h>
58 #include <xcb/xcb.h>
59 #include <xcb/glx.h>
60 #endif
61
62 static const char __glXGLXClientVendorName[] = "Mesa Project and SGI";
63 static const char __glXGLXClientVersion[] = "1.4";
64
65 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
66
67 /**
68 * Get the __DRIdrawable for the drawable associated with a GLXContext
69 *
70 * \param dpy The display associated with \c drawable.
71 * \param drawable GLXDrawable whose __DRIdrawable part is to be retrieved.
72 * \param scrn_num If non-NULL, the drawables screen is stored there
73 * \returns A pointer to the context's __DRIdrawable on success, or NULL if
74 * the drawable is not associated with a direct-rendering context.
75 */
76 _X_HIDDEN __GLXDRIdrawable *
77 GetGLXDRIDrawable(Display * dpy, GLXDrawable drawable)
78 {
79 struct glx_display *priv = __glXInitialize(dpy);
80 __GLXDRIdrawable *pdraw;
81
82 if (priv == NULL)
83 return NULL;
84
85 if (__glxHashLookup(priv->drawHash, drawable, (void *) &pdraw) == 0)
86 return pdraw;
87
88 return NULL;
89 }
90
91 #endif
92
93
94 /**
95 * Get the GLX per-screen data structure associated with a GLX context.
96 *
97 * \param dpy Display for which the GLX per-screen information is to be
98 * retrieved.
99 * \param scrn Screen on \c dpy for which the GLX per-screen information is
100 * to be retrieved.
101 * \returns A pointer to the GLX per-screen data if \c dpy and \c scrn
102 * specify a valid GLX screen, or NULL otherwise.
103 *
104 * \todo Should this function validate that \c scrn is within the screen
105 * number range for \c dpy?
106 */
107
108 static struct glx_screen *
109 GetGLXScreenConfigs(Display * dpy, int scrn)
110 {
111 struct glx_display *const priv = __glXInitialize(dpy);
112
113 return (priv
114 && priv->screens !=
115 NULL) ? priv->screens[scrn] : NULL;
116 }
117
118
119 static int
120 GetGLXPrivScreenConfig(Display * dpy, int scrn, struct glx_display ** ppriv,
121 struct glx_screen ** ppsc)
122 {
123 /* Initialize the extension, if needed . This has the added value
124 * of initializing/allocating the display private
125 */
126
127 if (dpy == NULL) {
128 return GLX_NO_EXTENSION;
129 }
130
131 *ppriv = __glXInitialize(dpy);
132 if (*ppriv == NULL) {
133 return GLX_NO_EXTENSION;
134 }
135
136 /* Check screen number to see if its valid */
137 if ((scrn < 0) || (scrn >= ScreenCount(dpy))) {
138 return GLX_BAD_SCREEN;
139 }
140
141 /* Check to see if the GL is supported on this screen */
142 *ppsc = (*ppriv)->screens[scrn];
143 if ((*ppsc)->configs == NULL) {
144 /* No support for GL on this screen regardless of visual */
145 return GLX_BAD_VISUAL;
146 }
147
148 return Success;
149 }
150
151
152 /**
153 * Determine if a \c GLXFBConfig supplied by the application is valid.
154 *
155 * \param dpy Application supplied \c Display pointer.
156 * \param config Application supplied \c GLXFBConfig.
157 *
158 * \returns If the \c GLXFBConfig is valid, the a pointer to the matching
159 * \c struct glx_config structure is returned. Otherwise, \c NULL
160 * is returned.
161 */
162 static struct glx_config *
163 ValidateGLXFBConfig(Display * dpy, GLXFBConfig fbconfig)
164 {
165 struct glx_display *const priv = __glXInitialize(dpy);
166 int num_screens = ScreenCount(dpy);
167 unsigned i;
168 struct glx_config *config;
169
170 if (priv != NULL) {
171 for (i = 0; i < num_screens; i++) {
172 for (config = priv->screens[i]->configs; config != NULL;
173 config = config->next) {
174 if (config == (struct glx_config *) fbconfig) {
175 return config;
176 }
177 }
178 }
179 }
180
181 return NULL;
182 }
183
184 _X_HIDDEN Bool
185 glx_context_init(struct glx_context *gc,
186 struct glx_screen *psc, struct glx_config *config)
187 {
188 gc->majorOpcode = __glXSetupForCommand(psc->display->dpy);
189 if (!gc->majorOpcode)
190 return GL_FALSE;
191
192 gc->screen = psc->scr;
193 gc->psc = psc;
194 gc->config = config;
195 gc->isDirect = GL_TRUE;
196 gc->currentContextTag = -1;
197
198 return GL_TRUE;
199 }
200
201
202 /**
203 * Create a new context. Exactly one of \c vis and \c fbconfig should be
204 * non-NULL.
205 *
206 * \param use_glx_1_3 For FBConfigs, should GLX 1.3 protocol or
207 * SGIX_fbconfig protocol be used?
208 * \param renderType For FBConfigs, what is the rendering type?
209 */
210
211 static GLXContext
212 CreateContext(Display * dpy, int generic_id,
213 struct glx_config *config,
214 GLXContext shareList_user,
215 Bool allowDirect,
216 unsigned code, int renderType, int screen)
217 {
218 struct glx_context *gc;
219 struct glx_screen *psc;
220 struct glx_context *shareList = (struct glx_context *) shareList_user;
221 if (dpy == NULL)
222 return NULL;
223
224 psc = GetGLXScreenConfigs(dpy, screen);
225 if (psc == NULL)
226 return NULL;
227
228 if (generic_id == None)
229 return NULL;
230
231 gc = NULL;
232 if (allowDirect && psc->vtable->create_context)
233 gc = psc->vtable->create_context(psc, config, shareList, renderType);
234 if (!gc)
235 gc = indirect_create_context(psc, config, shareList, renderType);
236 if (!gc)
237 return NULL;
238
239 LockDisplay(dpy);
240 switch (code) {
241 case X_GLXCreateContext: {
242 xGLXCreateContextReq *req;
243
244 /* Send the glXCreateContext request */
245 GetReq(GLXCreateContext, req);
246 req->reqType = gc->majorOpcode;
247 req->glxCode = X_GLXCreateContext;
248 req->context = gc->xid = XAllocID(dpy);
249 req->visual = generic_id;
250 req->screen = screen;
251 req->shareList = shareList ? shareList->xid : None;
252 req->isDirect = gc->isDirect;
253 break;
254 }
255
256 case X_GLXCreateNewContext: {
257 xGLXCreateNewContextReq *req;
258
259 /* Send the glXCreateNewContext request */
260 GetReq(GLXCreateNewContext, req);
261 req->reqType = gc->majorOpcode;
262 req->glxCode = X_GLXCreateNewContext;
263 req->context = gc->xid = XAllocID(dpy);
264 req->fbconfig = generic_id;
265 req->screen = screen;
266 req->renderType = renderType;
267 req->shareList = shareList ? shareList->xid : None;
268 req->isDirect = gc->isDirect;
269 break;
270 }
271
272 case X_GLXvop_CreateContextWithConfigSGIX: {
273 xGLXVendorPrivateWithReplyReq *vpreq;
274 xGLXCreateContextWithConfigSGIXReq *req;
275
276 /* Send the glXCreateNewContext request */
277 GetReqExtra(GLXVendorPrivateWithReply,
278 sz_xGLXCreateContextWithConfigSGIXReq -
279 sz_xGLXVendorPrivateWithReplyReq, vpreq);
280 req = (xGLXCreateContextWithConfigSGIXReq *) vpreq;
281 req->reqType = gc->majorOpcode;
282 req->glxCode = X_GLXVendorPrivateWithReply;
283 req->vendorCode = X_GLXvop_CreateContextWithConfigSGIX;
284 req->context = gc->xid = XAllocID(dpy);
285 req->fbconfig = generic_id;
286 req->screen = screen;
287 req->renderType = renderType;
288 req->shareList = shareList ? shareList->xid : None;
289 req->isDirect = gc->isDirect;
290 break;
291 }
292
293 default:
294 /* What to do here? This case is the sign of an internal error. It
295 * should never be reachable.
296 */
297 break;
298 }
299
300 UnlockDisplay(dpy);
301 SyncHandle();
302
303 gc->imported = GL_FALSE;
304 gc->renderType = renderType;
305
306 return (GLXContext) gc;
307 }
308
309 _X_EXPORT GLXContext
310 glXCreateContext(Display * dpy, XVisualInfo * vis,
311 GLXContext shareList, Bool allowDirect)
312 {
313 struct glx_config *config = NULL;
314 int renderType = 0;
315
316 #if defined(GLX_DIRECT_RENDERING) || defined(GLX_USE_APPLEGL)
317 struct glx_screen *const psc = GetGLXScreenConfigs(dpy, vis->screen);
318
319 config = glx_config_find_visual(psc->visuals, vis->visualid);
320 if (config == NULL) {
321 xError error;
322
323 error.errorCode = BadValue;
324 error.resourceID = vis->visualid;
325 error.sequenceNumber = dpy->request;
326 error.type = X_Error;
327 error.majorCode = __glXSetupForCommand(dpy);
328 error.minorCode = X_GLXCreateContext;
329 _XError(dpy, &error);
330 return None;
331 }
332
333 renderType = config->rgbMode ? GLX_RGBA_TYPE : GLX_COLOR_INDEX_TYPE;
334 #endif
335
336 return CreateContext(dpy, vis->visualid, config, shareList, allowDirect,
337 X_GLXCreateContext, renderType, vis->screen);
338 }
339
340 _X_HIDDEN void
341 glx_send_destroy_context(Display *dpy, XID xid)
342 {
343 CARD8 opcode = __glXSetupForCommand(dpy);
344 xGLXDestroyContextReq *req;
345
346 LockDisplay(dpy);
347 GetReq(GLXDestroyContext, req);
348 req->reqType = opcode;
349 req->glxCode = X_GLXDestroyContext;
350 req->context = xid;
351 UnlockDisplay(dpy);
352 SyncHandle();
353 }
354
355 /*
356 ** Destroy the named context
357 */
358 static void
359 DestroyContext(Display * dpy, GLXContext ctx)
360 {
361 struct glx_context *gc = (struct glx_context *) ctx;
362
363 if (!gc)
364 return;
365
366 __glXLock();
367 if (gc->currentDpy) {
368 /* This context is bound to some thread. According to the man page,
369 * we should not actually delete the context until it's unbound.
370 * Note that we set gc->xid = None above. In MakeContextCurrent()
371 * we check for that and delete the context there.
372 */
373 if (!gc->imported)
374 glx_send_destroy_context(dpy, gc->xid);
375 gc->xid = None;
376 __glXUnlock();
377 return;
378 }
379 __glXUnlock();
380
381 if (gc->vtable->destroy)
382 gc->vtable->destroy(gc);
383 }
384
385 _X_EXPORT void
386 glXDestroyContext(Display * dpy, GLXContext gc)
387 {
388 DestroyContext(dpy, gc);
389 }
390
391 /*
392 ** Return the major and minor version #s for the GLX extension
393 */
394 _X_EXPORT Bool
395 glXQueryVersion(Display * dpy, int *major, int *minor)
396 {
397 struct glx_display *priv;
398
399 /* Init the extension. This fetches the major and minor version. */
400 priv = __glXInitialize(dpy);
401 if (!priv)
402 return GL_FALSE;
403
404 if (major)
405 *major = priv->majorVersion;
406 if (minor)
407 *minor = priv->minorVersion;
408 return GL_TRUE;
409 }
410
411 /*
412 ** Query the existance of the GLX extension
413 */
414 _X_EXPORT Bool
415 glXQueryExtension(Display * dpy, int *errorBase, int *eventBase)
416 {
417 int major_op, erb, evb;
418 Bool rv;
419
420 rv = XQueryExtension(dpy, GLX_EXTENSION_NAME, &major_op, &evb, &erb);
421 if (rv) {
422 if (errorBase)
423 *errorBase = erb;
424 if (eventBase)
425 *eventBase = evb;
426 }
427 return rv;
428 }
429
430 /*
431 ** Put a barrier in the token stream that forces the GL to finish its
432 ** work before X can proceed.
433 */
434 _X_EXPORT void
435 glXWaitGL(void)
436 {
437 struct glx_context *gc = __glXGetCurrentContext();
438
439 if (gc && gc->vtable->wait_gl)
440 gc->vtable->wait_gl(gc);
441 }
442
443 /*
444 ** Put a barrier in the token stream that forces X to finish its
445 ** work before GL can proceed.
446 */
447 _X_EXPORT void
448 glXWaitX(void)
449 {
450 struct glx_context *gc = __glXGetCurrentContext();
451
452 if (gc && gc->vtable->wait_x)
453 gc->vtable->wait_x(gc);
454 }
455
456 _X_EXPORT void
457 glXUseXFont(Font font, int first, int count, int listBase)
458 {
459 struct glx_context *gc = __glXGetCurrentContext();
460
461 if (gc && gc->vtable->use_x_font)
462 gc->vtable->use_x_font(gc, font, first, count, listBase);
463 }
464
465 /************************************************************************/
466
467 /*
468 ** Copy the source context to the destination context using the
469 ** attribute "mask".
470 */
471 _X_EXPORT void
472 glXCopyContext(Display * dpy, GLXContext source_user,
473 GLXContext dest_user, unsigned long mask)
474 {
475 struct glx_context *source = (struct glx_context *) source_user;
476 struct glx_context *dest = (struct glx_context *) dest_user;
477 #ifdef GLX_USE_APPLEGL
478 struct glx_context *gc = __glXGetCurrentContext();
479 int errorcode;
480 bool x11error;
481
482 if(apple_glx_copy_context(gc->driContext, source->driContext, dest->driContext,
483 mask, &errorcode, &x11error)) {
484 __glXSendError(dpy, errorcode, 0, X_GLXCopyContext, x11error);
485 }
486
487 #else
488 xGLXCopyContextReq *req;
489 struct glx_context *gc = __glXGetCurrentContext();
490 GLXContextTag tag;
491 CARD8 opcode;
492
493 opcode = __glXSetupForCommand(dpy);
494 if (!opcode) {
495 return;
496 }
497
498 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
499 if (gc->isDirect) {
500 /* NOT_DONE: This does not work yet */
501 }
502 #endif
503
504 /*
505 ** If the source is the current context, send its tag so that the context
506 ** can be flushed before the copy.
507 */
508 if (source == gc && dpy == gc->currentDpy) {
509 tag = gc->currentContextTag;
510 }
511 else {
512 tag = 0;
513 }
514
515 /* Send the glXCopyContext request */
516 LockDisplay(dpy);
517 GetReq(GLXCopyContext, req);
518 req->reqType = opcode;
519 req->glxCode = X_GLXCopyContext;
520 req->source = source ? source->xid : None;
521 req->dest = dest ? dest->xid : None;
522 req->mask = mask;
523 req->contextTag = tag;
524 UnlockDisplay(dpy);
525 SyncHandle();
526 #endif /* GLX_USE_APPLEGL */
527 }
528
529
530 /**
531 * Determine if a context uses direct rendering.
532 *
533 * \param dpy Display where the context was created.
534 * \param contextID ID of the context to be tested.
535 *
536 * \returns \c GL_TRUE if the context is direct rendering or not.
537 */
538 static Bool
539 __glXIsDirect(Display * dpy, GLXContextID contextID)
540 {
541 #if !defined(USE_XCB)
542 xGLXIsDirectReq *req;
543 xGLXIsDirectReply reply;
544 #endif
545 CARD8 opcode;
546
547 opcode = __glXSetupForCommand(dpy);
548 if (!opcode) {
549 return GL_FALSE;
550 }
551
552 #ifdef USE_XCB
553 xcb_connection_t *c = XGetXCBConnection(dpy);
554 xcb_glx_is_direct_reply_t *reply = xcb_glx_is_direct_reply(c,
555 xcb_glx_is_direct
556 (c, contextID),
557 NULL);
558
559 const Bool is_direct = reply->is_direct ? True : False;
560 free(reply);
561
562 return is_direct;
563 #else
564 /* Send the glXIsDirect request */
565 LockDisplay(dpy);
566 GetReq(GLXIsDirect, req);
567 req->reqType = opcode;
568 req->glxCode = X_GLXIsDirect;
569 req->context = contextID;
570 _XReply(dpy, (xReply *) & reply, 0, False);
571 UnlockDisplay(dpy);
572 SyncHandle();
573
574 return reply.isDirect;
575 #endif /* USE_XCB */
576 }
577
578 /**
579 * \todo
580 * Shouldn't this function \b always return \c GL_FALSE when
581 * \c GLX_DIRECT_RENDERING is not defined? Do we really need to bother with
582 * the GLX protocol here at all?
583 */
584 _X_EXPORT Bool
585 glXIsDirect(Display * dpy, GLXContext gc_user)
586 {
587 struct glx_context *gc = (struct glx_context *) gc_user;
588
589 if (!gc) {
590 return GL_FALSE;
591 }
592 else if (gc->isDirect) {
593 return GL_TRUE;
594 }
595 #ifdef GLX_USE_APPLEGL /* TODO: indirect on darwin */
596 return GL_FALSE;
597 #else
598 return __glXIsDirect(dpy, gc->xid);
599 #endif
600 }
601
602 _X_EXPORT GLXPixmap
603 glXCreateGLXPixmap(Display * dpy, XVisualInfo * vis, Pixmap pixmap)
604 {
605 #ifdef GLX_USE_APPLEGL
606 int screen = vis->screen;
607 struct glx_screen *const psc = GetGLXScreenConfigs(dpy, screen);
608 const struct glx_config *config;
609
610 config = _gl_context_modes_find_visual(psc->visuals, vis->visualid);
611
612 if(apple_glx_pixmap_create(dpy, vis->screen, pixmap, config))
613 return None;
614
615 return pixmap;
616 #else
617 xGLXCreateGLXPixmapReq *req;
618 GLXPixmap xid;
619 CARD8 opcode;
620
621 opcode = __glXSetupForCommand(dpy);
622 if (!opcode) {
623 return None;
624 }
625
626 /* Send the glXCreateGLXPixmap request */
627 LockDisplay(dpy);
628 GetReq(GLXCreateGLXPixmap, req);
629 req->reqType = opcode;
630 req->glxCode = X_GLXCreateGLXPixmap;
631 req->screen = vis->screen;
632 req->visual = vis->visualid;
633 req->pixmap = pixmap;
634 req->glxpixmap = xid = XAllocID(dpy);
635 UnlockDisplay(dpy);
636 SyncHandle();
637
638 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
639 do {
640 /* FIXME: Maybe delay __DRIdrawable creation until the drawable
641 * is actually bound to a context... */
642
643 struct glx_display *const priv = __glXInitialize(dpy);
644 __GLXDRIdrawable *pdraw;
645 struct glx_screen *psc;
646 struct glx_config *config;
647
648 psc = priv->screens[vis->screen];
649 if (psc->driScreen == NULL)
650 break;
651 config = glx_config_find_visual(psc->visuals, vis->visualid);
652 pdraw = psc->driScreen->createDrawable(psc, pixmap, req->glxpixmap, config);
653 if (pdraw == NULL) {
654 fprintf(stderr, "failed to create pixmap\n");
655 break;
656 }
657
658 if (__glxHashInsert(priv->drawHash, req->glxpixmap, pdraw)) {
659 (*pdraw->destroyDrawable) (pdraw);
660 return None; /* FIXME: Check what we're supposed to do here... */
661 }
662 } while (0);
663 #endif
664
665 return xid;
666 #endif
667 }
668
669 /*
670 ** Destroy the named pixmap
671 */
672 _X_EXPORT void
673 glXDestroyGLXPixmap(Display * dpy, GLXPixmap glxpixmap)
674 {
675 #ifdef GLX_USE_APPLEGL
676 if(apple_glx_pixmap_destroy(dpy, glxpixmap))
677 __glXSendError(dpy, GLXBadPixmap, glxpixmap, X_GLXDestroyPixmap, false);
678 #else
679 xGLXDestroyGLXPixmapReq *req;
680 CARD8 opcode;
681
682 opcode = __glXSetupForCommand(dpy);
683 if (!opcode) {
684 return;
685 }
686
687 /* Send the glXDestroyGLXPixmap request */
688 LockDisplay(dpy);
689 GetReq(GLXDestroyGLXPixmap, req);
690 req->reqType = opcode;
691 req->glxCode = X_GLXDestroyGLXPixmap;
692 req->glxpixmap = glxpixmap;
693 UnlockDisplay(dpy);
694 SyncHandle();
695
696 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
697 {
698 struct glx_display *const priv = __glXInitialize(dpy);
699 __GLXDRIdrawable *pdraw = GetGLXDRIDrawable(dpy, glxpixmap);
700
701 if (pdraw != NULL) {
702 (*pdraw->destroyDrawable) (pdraw);
703 __glxHashDelete(priv->drawHash, glxpixmap);
704 }
705 }
706 #endif
707 #endif /* GLX_USE_APPLEGL */
708 }
709
710 _X_EXPORT void
711 glXSwapBuffers(Display * dpy, GLXDrawable drawable)
712 {
713 #ifdef GLX_USE_APPLEGL
714 GLXContext gc = glXGetCurrentContext();
715 if(gc && apple_glx_is_current_drawable(dpy, gc->driContext, drawable)) {
716 apple_glx_swap_buffers(gc->driContext);
717 } else {
718 __glXSendError(dpy, GLXBadCurrentWindow, 0, X_GLXSwapBuffers, false);
719 }
720 #else
721 struct glx_context *gc;
722 GLXContextTag tag;
723 CARD8 opcode;
724 #ifdef USE_XCB
725 xcb_connection_t *c;
726 #else
727 xGLXSwapBuffersReq *req;
728 #endif
729
730 gc = __glXGetCurrentContext();
731
732 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
733 __GLXDRIdrawable *pdraw = GetGLXDRIDrawable(dpy, drawable);
734
735 if (pdraw != NULL) {
736 if (gc && drawable == gc->currentDrawable) {
737 glFlush();
738 }
739
740 (*pdraw->psc->driScreen->swapBuffers)(pdraw, 0, 0, 0);
741 return;
742 }
743 #endif
744
745 opcode = __glXSetupForCommand(dpy);
746 if (!opcode) {
747 return;
748 }
749
750 /*
751 ** The calling thread may or may not have a current context. If it
752 ** does, send the context tag so the server can do a flush.
753 */
754 if ((gc != NULL) && (dpy == gc->currentDpy) &&
755 ((drawable == gc->currentDrawable)
756 || (drawable == gc->currentReadable))) {
757 tag = gc->currentContextTag;
758 }
759 else {
760 tag = 0;
761 }
762
763 #ifdef USE_XCB
764 c = XGetXCBConnection(dpy);
765 xcb_glx_swap_buffers(c, tag, drawable);
766 xcb_flush(c);
767 #else
768 /* Send the glXSwapBuffers request */
769 LockDisplay(dpy);
770 GetReq(GLXSwapBuffers, req);
771 req->reqType = opcode;
772 req->glxCode = X_GLXSwapBuffers;
773 req->drawable = drawable;
774 req->contextTag = tag;
775 UnlockDisplay(dpy);
776 SyncHandle();
777 XFlush(dpy);
778 #endif /* USE_XCB */
779 #endif /* GLX_USE_APPLEGL */
780 }
781
782
783 /*
784 ** Return configuration information for the given display, screen and
785 ** visual combination.
786 */
787 _X_EXPORT int
788 glXGetConfig(Display * dpy, XVisualInfo * vis, int attribute,
789 int *value_return)
790 {
791 struct glx_display *priv;
792 struct glx_screen *psc;
793 struct glx_config *config;
794 int status;
795
796 status = GetGLXPrivScreenConfig(dpy, vis->screen, &priv, &psc);
797 if (status == Success) {
798 config = glx_config_find_visual(psc->visuals, vis->visualid);
799
800 /* Lookup attribute after first finding a match on the visual */
801 if (config != NULL) {
802 return glx_config_get(config, attribute, value_return);
803 }
804
805 status = GLX_BAD_VISUAL;
806 }
807
808 /*
809 ** If we can't find the config for this visual, this visual is not
810 ** supported by the OpenGL implementation on the server.
811 */
812 if ((status == GLX_BAD_VISUAL) && (attribute == GLX_USE_GL)) {
813 *value_return = GL_FALSE;
814 status = Success;
815 }
816
817 return status;
818 }
819
820 /************************************************************************/
821
822 static void
823 init_fbconfig_for_chooser(struct glx_config * config,
824 GLboolean fbconfig_style_tags)
825 {
826 memset(config, 0, sizeof(struct glx_config));
827 config->visualID = (XID) GLX_DONT_CARE;
828 config->visualType = GLX_DONT_CARE;
829
830 /* glXChooseFBConfig specifies different defaults for these two than
831 * glXChooseVisual.
832 */
833 if (fbconfig_style_tags) {
834 config->rgbMode = GL_TRUE;
835 config->doubleBufferMode = GLX_DONT_CARE;
836 }
837
838 config->visualRating = GLX_DONT_CARE;
839 config->transparentPixel = GLX_NONE;
840 config->transparentRed = GLX_DONT_CARE;
841 config->transparentGreen = GLX_DONT_CARE;
842 config->transparentBlue = GLX_DONT_CARE;
843 config->transparentAlpha = GLX_DONT_CARE;
844 config->transparentIndex = GLX_DONT_CARE;
845
846 config->drawableType = GLX_WINDOW_BIT;
847 config->renderType =
848 (config->rgbMode) ? GLX_RGBA_BIT : GLX_COLOR_INDEX_BIT;
849 config->xRenderable = GLX_DONT_CARE;
850 config->fbconfigID = (GLXFBConfigID) (GLX_DONT_CARE);
851
852 config->swapMethod = GLX_DONT_CARE;
853 }
854
855 #define MATCH_DONT_CARE( param ) \
856 do { \
857 if ( ((int) a-> param != (int) GLX_DONT_CARE) \
858 && (a-> param != b-> param) ) { \
859 return False; \
860 } \
861 } while ( 0 )
862
863 #define MATCH_MINIMUM( param ) \
864 do { \
865 if ( ((int) a-> param != (int) GLX_DONT_CARE) \
866 && (a-> param > b-> param) ) { \
867 return False; \
868 } \
869 } while ( 0 )
870
871 #define MATCH_EXACT( param ) \
872 do { \
873 if ( a-> param != b-> param) { \
874 return False; \
875 } \
876 } while ( 0 )
877
878 /* Test that all bits from a are contained in b */
879 #define MATCH_MASK(param) \
880 do { \
881 if ((a->param & ~b->param) != 0) \
882 return False; \
883 } while (0);
884
885 /**
886 * Determine if two GLXFBConfigs are compatible.
887 *
888 * \param a Application specified config to test.
889 * \param b Server specified config to test against \c a.
890 */
891 static Bool
892 fbconfigs_compatible(const struct glx_config * const a,
893 const struct glx_config * const b)
894 {
895 MATCH_DONT_CARE(doubleBufferMode);
896 MATCH_DONT_CARE(visualType);
897 MATCH_DONT_CARE(visualRating);
898 MATCH_DONT_CARE(xRenderable);
899 MATCH_DONT_CARE(fbconfigID);
900 MATCH_DONT_CARE(swapMethod);
901
902 MATCH_MINIMUM(rgbBits);
903 MATCH_MINIMUM(numAuxBuffers);
904 MATCH_MINIMUM(redBits);
905 MATCH_MINIMUM(greenBits);
906 MATCH_MINIMUM(blueBits);
907 MATCH_MINIMUM(alphaBits);
908 MATCH_MINIMUM(depthBits);
909 MATCH_MINIMUM(stencilBits);
910 MATCH_MINIMUM(accumRedBits);
911 MATCH_MINIMUM(accumGreenBits);
912 MATCH_MINIMUM(accumBlueBits);
913 MATCH_MINIMUM(accumAlphaBits);
914 MATCH_MINIMUM(sampleBuffers);
915 MATCH_MINIMUM(maxPbufferWidth);
916 MATCH_MINIMUM(maxPbufferHeight);
917 MATCH_MINIMUM(maxPbufferPixels);
918 MATCH_MINIMUM(samples);
919
920 MATCH_DONT_CARE(stereoMode);
921 MATCH_EXACT(level);
922
923 MATCH_MASK(drawableType);
924 MATCH_MASK(renderType);
925
926 /* There is a bug in a few of the XFree86 DDX drivers. They contain
927 * visuals with a "transparent type" of 0 when they really mean GLX_NONE.
928 * Technically speaking, it is a bug in the DDX driver, but there is
929 * enough of an installed base to work around the problem here. In any
930 * case, 0 is not a valid value of the transparent type, so we'll treat 0
931 * from the app as GLX_DONT_CARE. We'll consider GLX_NONE from the app and
932 * 0 from the server to be a match to maintain backward compatibility with
933 * the (broken) drivers.
934 */
935
936 if (a->transparentPixel != (int) GLX_DONT_CARE && a->transparentPixel != 0) {
937 if (a->transparentPixel == GLX_NONE) {
938 if (b->transparentPixel != GLX_NONE && b->transparentPixel != 0)
939 return False;
940 }
941 else {
942 MATCH_EXACT(transparentPixel);
943 }
944
945 switch (a->transparentPixel) {
946 case GLX_TRANSPARENT_RGB:
947 MATCH_DONT_CARE(transparentRed);
948 MATCH_DONT_CARE(transparentGreen);
949 MATCH_DONT_CARE(transparentBlue);
950 MATCH_DONT_CARE(transparentAlpha);
951 break;
952
953 case GLX_TRANSPARENT_INDEX:
954 MATCH_DONT_CARE(transparentIndex);
955 break;
956
957 default:
958 break;
959 }
960 }
961
962 return True;
963 }
964
965
966 /* There's some trickly language in the GLX spec about how this is supposed
967 * to work. Basically, if a given component size is either not specified
968 * or the requested size is zero, it is supposed to act like PERFER_SMALLER.
969 * Well, that's really hard to do with the code as-is. This behavior is
970 * closer to correct, but still not technically right.
971 */
972 #define PREFER_LARGER_OR_ZERO(comp) \
973 do { \
974 if ( ((*a)-> comp) != ((*b)-> comp) ) { \
975 if ( ((*a)-> comp) == 0 ) { \
976 return -1; \
977 } \
978 else if ( ((*b)-> comp) == 0 ) { \
979 return 1; \
980 } \
981 else { \
982 return ((*b)-> comp) - ((*a)-> comp) ; \
983 } \
984 } \
985 } while( 0 )
986
987 #define PREFER_LARGER(comp) \
988 do { \
989 if ( ((*a)-> comp) != ((*b)-> comp) ) { \
990 return ((*b)-> comp) - ((*a)-> comp) ; \
991 } \
992 } while( 0 )
993
994 #define PREFER_SMALLER(comp) \
995 do { \
996 if ( ((*a)-> comp) != ((*b)-> comp) ) { \
997 return ((*a)-> comp) - ((*b)-> comp) ; \
998 } \
999 } while( 0 )
1000
1001 /**
1002 * Compare two GLXFBConfigs. This function is intended to be used as the
1003 * compare function passed in to qsort.
1004 *
1005 * \returns If \c a is a "better" config, according to the specification of
1006 * SGIX_fbconfig, a number less than zero is returned. If \c b is
1007 * better, then a number greater than zero is return. If both are
1008 * equal, zero is returned.
1009 * \sa qsort, glXChooseVisual, glXChooseFBConfig, glXChooseFBConfigSGIX
1010 */
1011 static int
1012 fbconfig_compare(struct glx_config **a, struct glx_config **b)
1013 {
1014 /* The order of these comparisons must NOT change. It is defined by
1015 * the GLX 1.3 spec and ARB_multisample.
1016 */
1017
1018 PREFER_SMALLER(visualSelectGroup);
1019
1020 /* The sort order for the visualRating is GLX_NONE, GLX_SLOW, and
1021 * GLX_NON_CONFORMANT_CONFIG. It just so happens that this is the
1022 * numerical sort order of the enums (0x8000, 0x8001, and 0x800D).
1023 */
1024 PREFER_SMALLER(visualRating);
1025
1026 /* This isn't quite right. It is supposed to compare the sum of the
1027 * components the user specifically set minimums for.
1028 */
1029 PREFER_LARGER_OR_ZERO(redBits);
1030 PREFER_LARGER_OR_ZERO(greenBits);
1031 PREFER_LARGER_OR_ZERO(blueBits);
1032 PREFER_LARGER_OR_ZERO(alphaBits);
1033
1034 PREFER_SMALLER(rgbBits);
1035
1036 if (((*a)->doubleBufferMode != (*b)->doubleBufferMode)) {
1037 /* Prefer single-buffer.
1038 */
1039 return (!(*a)->doubleBufferMode) ? -1 : 1;
1040 }
1041
1042 PREFER_SMALLER(numAuxBuffers);
1043
1044 PREFER_LARGER_OR_ZERO(depthBits);
1045 PREFER_SMALLER(stencilBits);
1046
1047 /* This isn't quite right. It is supposed to compare the sum of the
1048 * components the user specifically set minimums for.
1049 */
1050 PREFER_LARGER_OR_ZERO(accumRedBits);
1051 PREFER_LARGER_OR_ZERO(accumGreenBits);
1052 PREFER_LARGER_OR_ZERO(accumBlueBits);
1053 PREFER_LARGER_OR_ZERO(accumAlphaBits);
1054
1055 PREFER_SMALLER(visualType);
1056
1057 /* None of the multisample specs say where this comparison should happen,
1058 * so I put it near the end.
1059 */
1060 PREFER_SMALLER(sampleBuffers);
1061 PREFER_SMALLER(samples);
1062
1063 /* None of the pbuffer or fbconfig specs say that this comparison needs
1064 * to happen at all, but it seems like it should.
1065 */
1066 PREFER_LARGER(maxPbufferWidth);
1067 PREFER_LARGER(maxPbufferHeight);
1068 PREFER_LARGER(maxPbufferPixels);
1069
1070 return 0;
1071 }
1072
1073
1074 /**
1075 * Selects and sorts a subset of the supplied configs based on the attributes.
1076 * This function forms to basis of \c glXChooseVisual, \c glXChooseFBConfig,
1077 * and \c glXChooseFBConfigSGIX.
1078 *
1079 * \param configs Array of pointers to possible configs. The elements of
1080 * this array that do not meet the criteria will be set to
1081 * NULL. The remaining elements will be sorted according to
1082 * the various visual / FBConfig selection rules.
1083 * \param num_configs Number of elements in the \c configs array.
1084 * \param attribList Attributes used select from \c configs. This array is
1085 * terminated by a \c None tag. The array can either take
1086 * the form expected by \c glXChooseVisual (where boolean
1087 * tags do not have a value) or by \c glXChooseFBConfig
1088 * (where every tag has a value).
1089 * \param fbconfig_style_tags Selects whether \c attribList is in
1090 * \c glXChooseVisual style or
1091 * \c glXChooseFBConfig style.
1092 * \returns The number of valid elements left in \c configs.
1093 *
1094 * \sa glXChooseVisual, glXChooseFBConfig, glXChooseFBConfigSGIX
1095 */
1096 static int
1097 choose_visual(struct glx_config ** configs, int num_configs,
1098 const int *attribList, GLboolean fbconfig_style_tags)
1099 {
1100 struct glx_config test_config;
1101 int base;
1102 int i;
1103
1104 /* This is a fairly direct implementation of the selection method
1105 * described by GLX_SGIX_fbconfig. Start by culling out all the
1106 * configs that are not compatible with the selected parameter
1107 * list.
1108 */
1109
1110 init_fbconfig_for_chooser(&test_config, fbconfig_style_tags);
1111 __glXInitializeVisualConfigFromTags(&test_config, 512,
1112 (const INT32 *) attribList,
1113 GL_TRUE, fbconfig_style_tags);
1114
1115 base = 0;
1116 for (i = 0; i < num_configs; i++) {
1117 if (fbconfigs_compatible(&test_config, configs[i])) {
1118 configs[base] = configs[i];
1119 base++;
1120 }
1121 }
1122
1123 if (base == 0) {
1124 return 0;
1125 }
1126
1127 if (base < num_configs) {
1128 (void) memset(&configs[base], 0, sizeof(void *) * (num_configs - base));
1129 }
1130
1131 /* After the incompatible configs are removed, the resulting
1132 * list is sorted according to the rules set out in the various
1133 * specifications.
1134 */
1135
1136 qsort(configs, base, sizeof(struct glx_config *),
1137 (int (*)(const void *, const void *)) fbconfig_compare);
1138 return base;
1139 }
1140
1141
1142
1143
1144 /*
1145 ** Return the visual that best matches the template. Return None if no
1146 ** visual matches the template.
1147 */
1148 _X_EXPORT XVisualInfo *
1149 glXChooseVisual(Display * dpy, int screen, int *attribList)
1150 {
1151 XVisualInfo *visualList = NULL;
1152 struct glx_display *priv;
1153 struct glx_screen *psc;
1154 struct glx_config test_config;
1155 struct glx_config *config;
1156 struct glx_config *best_config = NULL;
1157
1158 /*
1159 ** Get a list of all visuals, return if list is empty
1160 */
1161 if (GetGLXPrivScreenConfig(dpy, screen, &priv, &psc) != Success) {
1162 return None;
1163 }
1164
1165
1166 /*
1167 ** Build a template from the defaults and the attribute list
1168 ** Free visual list and return if an unexpected token is encountered
1169 */
1170 init_fbconfig_for_chooser(&test_config, GL_FALSE);
1171 __glXInitializeVisualConfigFromTags(&test_config, 512,
1172 (const INT32 *) attribList,
1173 GL_TRUE, GL_FALSE);
1174
1175 /*
1176 ** Eliminate visuals that don't meet minimum requirements
1177 ** Compute a score for those that do
1178 ** Remember which visual, if any, got the highest score
1179 ** If no visual is acceptable, return None
1180 ** Otherwise, create an XVisualInfo list with just the selected X visual
1181 ** and return this.
1182 */
1183 for (config = psc->visuals; config != NULL; config = config->next) {
1184 if (fbconfigs_compatible(&test_config, config)
1185 && ((best_config == NULL) ||
1186 (fbconfig_compare (&config, &best_config) < 0))) {
1187 XVisualInfo visualTemplate;
1188 XVisualInfo *newList;
1189 int i;
1190
1191 visualTemplate.screen = screen;
1192 visualTemplate.visualid = config->visualID;
1193 newList = XGetVisualInfo(dpy, VisualScreenMask | VisualIDMask,
1194 &visualTemplate, &i);
1195
1196 if (newList) {
1197 Xfree(visualList);
1198 visualList = newList;
1199 best_config = config;
1200 }
1201 }
1202 }
1203
1204 #ifdef GLX_USE_APPLEGL
1205 if(visualList && getenv("LIBGL_DUMP_VISUALID")) {
1206 printf("visualid 0x%lx\n", visualList[0].visualid);
1207 }
1208 #endif
1209
1210 return visualList;
1211 }
1212
1213
1214 _X_EXPORT const char *
1215 glXQueryExtensionsString(Display * dpy, int screen)
1216 {
1217 struct glx_screen *psc;
1218 struct glx_display *priv;
1219
1220 if (GetGLXPrivScreenConfig(dpy, screen, &priv, &psc) != Success) {
1221 return NULL;
1222 }
1223
1224 if (!psc->effectiveGLXexts) {
1225 if (!psc->serverGLXexts) {
1226 psc->serverGLXexts =
1227 __glXQueryServerString(dpy, priv->majorOpcode, screen,
1228 GLX_EXTENSIONS);
1229 }
1230
1231 __glXCalculateUsableExtensions(psc,
1232 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
1233 (psc->driScreen != NULL),
1234 #else
1235 GL_FALSE,
1236 #endif
1237 priv->minorVersion);
1238 }
1239
1240 return psc->effectiveGLXexts;
1241 }
1242
1243 _X_EXPORT const char *
1244 glXGetClientString(Display * dpy, int name)
1245 {
1246 (void) dpy;
1247
1248 switch (name) {
1249 case GLX_VENDOR:
1250 return (__glXGLXClientVendorName);
1251 case GLX_VERSION:
1252 return (__glXGLXClientVersion);
1253 case GLX_EXTENSIONS:
1254 return (__glXGetClientExtensions());
1255 default:
1256 return NULL;
1257 }
1258 }
1259
1260 _X_EXPORT const char *
1261 glXQueryServerString(Display * dpy, int screen, int name)
1262 {
1263 struct glx_screen *psc;
1264 struct glx_display *priv;
1265 const char **str;
1266
1267
1268 if (GetGLXPrivScreenConfig(dpy, screen, &priv, &psc) != Success) {
1269 return NULL;
1270 }
1271
1272 switch (name) {
1273 case GLX_VENDOR:
1274 str = &priv->serverGLXvendor;
1275 break;
1276 case GLX_VERSION:
1277 str = &priv->serverGLXversion;
1278 break;
1279 case GLX_EXTENSIONS:
1280 str = &psc->serverGLXexts;
1281 break;
1282 default:
1283 return NULL;
1284 }
1285
1286 if (*str == NULL) {
1287 *str = __glXQueryServerString(dpy, priv->majorOpcode, screen, name);
1288 }
1289
1290 return *str;
1291 }
1292
1293 void
1294 __glXClientInfo(Display * dpy, int opcode)
1295 {
1296 char *ext_str = __glXGetClientGLExtensionString();
1297 int size = strlen(ext_str) + 1;
1298
1299 #ifdef USE_XCB
1300 xcb_connection_t *c = XGetXCBConnection(dpy);
1301 xcb_glx_client_info(c,
1302 GLX_MAJOR_VERSION, GLX_MINOR_VERSION, size, ext_str);
1303 #else
1304 xGLXClientInfoReq *req;
1305
1306 /* Send the glXClientInfo request */
1307 LockDisplay(dpy);
1308 GetReq(GLXClientInfo, req);
1309 req->reqType = opcode;
1310 req->glxCode = X_GLXClientInfo;
1311 req->major = GLX_MAJOR_VERSION;
1312 req->minor = GLX_MINOR_VERSION;
1313
1314 req->length += (size + 3) >> 2;
1315 req->numbytes = size;
1316 Data(dpy, ext_str, size);
1317
1318 UnlockDisplay(dpy);
1319 SyncHandle();
1320 #endif /* USE_XCB */
1321
1322 Xfree(ext_str);
1323 }
1324
1325
1326 /*
1327 ** EXT_import_context
1328 */
1329
1330 _X_EXPORT Display *
1331 glXGetCurrentDisplay(void)
1332 {
1333 struct glx_context *gc = __glXGetCurrentContext();
1334 if (NULL == gc)
1335 return NULL;
1336 return gc->currentDpy;
1337 }
1338
1339 _X_EXPORT
1340 GLX_ALIAS(Display *, glXGetCurrentDisplayEXT, (void), (),
1341 glXGetCurrentDisplay)
1342
1343 #ifndef GLX_USE_APPLEGL
1344 _X_EXPORT GLXContext
1345 glXImportContextEXT(Display *dpy, GLXContextID contextID)
1346 {
1347 struct glx_display *priv = __glXInitialize(dpy);
1348 struct glx_screen *psc;
1349 xGLXQueryContextReply reply;
1350 CARD8 opcode;
1351 struct glx_context *ctx;
1352 int propList[__GLX_MAX_CONTEXT_PROPS * 2], *pProp, nPropListBytes;
1353 int i, renderType;
1354 XID share;
1355 struct glx_config *mode;
1356
1357 if (contextID == None || __glXIsDirect(dpy, contextID))
1358 return NULL;
1359
1360 opcode = __glXSetupForCommand(dpy);
1361 if (!opcode)
1362 return 0;
1363
1364 /* Send the glXQueryContextInfoEXT request */
1365 LockDisplay(dpy);
1366
1367 if (priv->majorVersion > 1 || priv->minorVersion >= 3) {
1368 xGLXQueryContextReq *req;
1369
1370 GetReq(GLXQueryContext, req);
1371
1372 req->reqType = opcode;
1373 req->glxCode = X_GLXQueryContext;
1374 req->context = contextID;
1375 }
1376 else {
1377 xGLXVendorPrivateReq *vpreq;
1378 xGLXQueryContextInfoEXTReq *req;
1379
1380 GetReqExtra(GLXVendorPrivate,
1381 sz_xGLXQueryContextInfoEXTReq - sz_xGLXVendorPrivateReq,
1382 vpreq);
1383 req = (xGLXQueryContextInfoEXTReq *) vpreq;
1384 req->reqType = opcode;
1385 req->glxCode = X_GLXVendorPrivateWithReply;
1386 req->vendorCode = X_GLXvop_QueryContextInfoEXT;
1387 req->context = contextID;
1388 }
1389
1390 _XReply(dpy, (xReply *) & reply, 0, False);
1391
1392 if (reply.n <= __GLX_MAX_CONTEXT_PROPS)
1393 nPropListBytes = reply.n * 2 * sizeof propList[0];
1394 else
1395 nPropListBytes = 0;
1396 _XRead(dpy, (char *) propList, nPropListBytes);
1397 UnlockDisplay(dpy);
1398 SyncHandle();
1399
1400 /* Look up screen first so we can look up visuals/fbconfigs later */
1401 psc = NULL;
1402 for (i = 0, pProp = propList; i < reply.n; i++, pProp += 2)
1403 if (pProp[0] == GLX_SCREEN)
1404 psc = GetGLXScreenConfigs(dpy, pProp[1]);
1405 if (psc == NULL)
1406 return NULL;
1407
1408 share = None;
1409 mode = NULL;
1410 renderType = 0;
1411 pProp = propList;
1412
1413 for (i = 0, pProp = propList; i < reply.n; i++, pProp += 2)
1414 switch (pProp[0]) {
1415 case GLX_SHARE_CONTEXT_EXT:
1416 share = pProp[1];
1417 break;
1418 case GLX_VISUAL_ID_EXT:
1419 mode = glx_config_find_visual(psc->visuals, pProp[1]);
1420 break;
1421 case GLX_FBCONFIG_ID:
1422 mode = glx_config_find_fbconfig(psc->configs, pProp[1]);
1423 break;
1424 case GLX_RENDER_TYPE:
1425 renderType = pProp[1];
1426 break;
1427 }
1428
1429 if (mode == NULL)
1430 return NULL;
1431
1432 ctx = indirect_create_context(psc, mode, NULL, renderType);
1433 if (ctx == NULL)
1434 return NULL;
1435
1436 ctx->xid = contextID;
1437 ctx->imported = GL_TRUE;
1438 ctx->share_xid = share;
1439
1440 return (GLXContext) ctx;
1441 }
1442
1443 #endif
1444
1445 _X_EXPORT int
1446 glXQueryContext(Display * dpy, GLXContext ctx_user, int attribute, int *value)
1447 {
1448 struct glx_context *ctx = (struct glx_context *) ctx_user;
1449
1450 switch (attribute) {
1451 case GLX_SHARE_CONTEXT_EXT:
1452 *value = ctx->share_xid;
1453 break;
1454 case GLX_VISUAL_ID_EXT:
1455 *value = ctx->config ? ctx->config->visualID : None;
1456 break;
1457 case GLX_SCREEN:
1458 *value = ctx->screen;
1459 break;
1460 case GLX_FBCONFIG_ID:
1461 *value = ctx->config ? ctx->config->fbconfigID : None;
1462 break;
1463 case GLX_RENDER_TYPE:
1464 *value = ctx->renderType;
1465 break;
1466 default:
1467 return GLX_BAD_ATTRIBUTE;
1468 }
1469 return Success;
1470 }
1471
1472 _X_EXPORT
1473 GLX_ALIAS(int, glXQueryContextInfoEXT,
1474 (Display * dpy, GLXContext ctx, int attribute, int *value),
1475 (dpy, ctx, attribute, value), glXQueryContext)
1476
1477 _X_EXPORT GLXContextID glXGetContextIDEXT(const GLXContext ctx_user)
1478 {
1479 struct glx_context *ctx = (struct glx_context *) ctx_user;
1480
1481 return ctx->xid;
1482 }
1483
1484 _X_EXPORT void
1485 glXFreeContextEXT(Display * dpy, GLXContext ctx)
1486 {
1487 DestroyContext(dpy, ctx);
1488 }
1489
1490
1491 _X_EXPORT GLXFBConfig *
1492 glXChooseFBConfig(Display * dpy, int screen,
1493 const int *attribList, int *nitems)
1494 {
1495 struct glx_config **config_list;
1496 int list_size;
1497
1498
1499 config_list = (struct glx_config **)
1500 glXGetFBConfigs(dpy, screen, &list_size);
1501
1502 if ((config_list != NULL) && (list_size > 0) && (attribList != NULL)) {
1503 list_size = choose_visual(config_list, list_size, attribList, GL_TRUE);
1504 if (list_size == 0) {
1505 XFree(config_list);
1506 config_list = NULL;
1507 }
1508 }
1509
1510 *nitems = list_size;
1511 return (GLXFBConfig *) config_list;
1512 }
1513
1514
1515 _X_EXPORT GLXContext
1516 glXCreateNewContext(Display * dpy, GLXFBConfig fbconfig,
1517 int renderType, GLXContext shareList, Bool allowDirect)
1518 {
1519 struct glx_config *config = (struct glx_config *) fbconfig;
1520
1521 return CreateContext(dpy, config->fbconfigID, config, shareList,
1522 allowDirect, X_GLXCreateNewContext, renderType,
1523 config->screen);
1524 }
1525
1526
1527 _X_EXPORT GLXDrawable
1528 glXGetCurrentReadDrawable(void)
1529 {
1530 struct glx_context *gc = __glXGetCurrentContext();
1531
1532 return gc->currentReadable;
1533 }
1534
1535
1536 _X_EXPORT GLXFBConfig *
1537 glXGetFBConfigs(Display * dpy, int screen, int *nelements)
1538 {
1539 struct glx_display *priv = __glXInitialize(dpy);
1540 struct glx_config **config_list = NULL;
1541 struct glx_config *config;
1542 unsigned num_configs = 0;
1543 int i;
1544
1545 *nelements = 0;
1546 if (priv && (priv->screens != NULL)
1547 && (screen >= 0) && (screen <= ScreenCount(dpy))
1548 && (priv->screens[screen]->configs != NULL)
1549 && (priv->screens[screen]->configs->fbconfigID
1550 != (int) GLX_DONT_CARE)) {
1551
1552 for (config = priv->screens[screen]->configs; config != NULL;
1553 config = config->next) {
1554 if (config->fbconfigID != (int) GLX_DONT_CARE) {
1555 num_configs++;
1556 }
1557 }
1558
1559 config_list = Xmalloc(num_configs * sizeof *config_list);
1560 if (config_list != NULL) {
1561 *nelements = num_configs;
1562 i = 0;
1563 for (config = priv->screens[screen]->configs; config != NULL;
1564 config = config->next) {
1565 if (config->fbconfigID != (int) GLX_DONT_CARE) {
1566 config_list[i] = config;
1567 i++;
1568 }
1569 }
1570 }
1571 }
1572
1573 return (GLXFBConfig *) config_list;
1574 }
1575
1576
1577 _X_EXPORT int
1578 glXGetFBConfigAttrib(Display * dpy, GLXFBConfig fbconfig,
1579 int attribute, int *value)
1580 {
1581 struct glx_config *config = ValidateGLXFBConfig(dpy, fbconfig);
1582
1583 if (config == NULL)
1584 return GLXBadFBConfig;
1585
1586 return glx_config_get(config, attribute, value);
1587 }
1588
1589
1590 _X_EXPORT XVisualInfo *
1591 glXGetVisualFromFBConfig(Display * dpy, GLXFBConfig fbconfig)
1592 {
1593 XVisualInfo visualTemplate;
1594 struct glx_config *config = (struct glx_config *) fbconfig;
1595 int count;
1596
1597 /*
1598 ** Get a list of all visuals, return if list is empty
1599 */
1600 visualTemplate.visualid = config->visualID;
1601 return XGetVisualInfo(dpy, VisualIDMask, &visualTemplate, &count);
1602 }
1603
1604 #ifndef GLX_USE_APPLEGL
1605 /*
1606 ** GLX_SGI_swap_control
1607 */
1608 static int
1609 __glXSwapIntervalSGI(int interval)
1610 {
1611 xGLXVendorPrivateReq *req;
1612 struct glx_context *gc = __glXGetCurrentContext();
1613 struct glx_screen *psc;
1614 Display *dpy;
1615 CARD32 *interval_ptr;
1616 CARD8 opcode;
1617
1618 if (gc == NULL) {
1619 return GLX_BAD_CONTEXT;
1620 }
1621
1622 if (interval <= 0) {
1623 return GLX_BAD_VALUE;
1624 }
1625
1626 psc = GetGLXScreenConfigs( gc->currentDpy, gc->screen);
1627
1628 #ifdef GLX_DIRECT_RENDERING
1629 if (gc->isDirect && psc->driScreen && psc->driScreen->setSwapInterval) {
1630 __GLXDRIdrawable *pdraw =
1631 GetGLXDRIDrawable(gc->currentDpy, gc->currentDrawable);
1632 psc->driScreen->setSwapInterval(pdraw, interval);
1633 return 0;
1634 }
1635 #endif
1636
1637 dpy = gc->currentDpy;
1638 opcode = __glXSetupForCommand(dpy);
1639 if (!opcode) {
1640 return 0;
1641 }
1642
1643 /* Send the glXSwapIntervalSGI request */
1644 LockDisplay(dpy);
1645 GetReqExtra(GLXVendorPrivate, sizeof(CARD32), req);
1646 req->reqType = opcode;
1647 req->glxCode = X_GLXVendorPrivate;
1648 req->vendorCode = X_GLXvop_SwapIntervalSGI;
1649 req->contextTag = gc->currentContextTag;
1650
1651 interval_ptr = (CARD32 *) (req + 1);
1652 *interval_ptr = interval;
1653
1654 UnlockDisplay(dpy);
1655 SyncHandle();
1656 XFlush(dpy);
1657
1658 return 0;
1659 }
1660
1661
1662 /*
1663 ** GLX_MESA_swap_control
1664 */
1665 static int
1666 __glXSwapIntervalMESA(unsigned int interval)
1667 {
1668 #ifdef GLX_DIRECT_RENDERING
1669 struct glx_context *gc = __glXGetCurrentContext();
1670
1671 if (gc != NULL && gc->isDirect) {
1672 struct glx_screen *psc;
1673
1674 psc = GetGLXScreenConfigs( gc->currentDpy, gc->screen);
1675 if (psc->driScreen && psc->driScreen->setSwapInterval) {
1676 __GLXDRIdrawable *pdraw =
1677 GetGLXDRIDrawable(gc->currentDpy, gc->currentDrawable);
1678 return psc->driScreen->setSwapInterval(pdraw, interval);
1679 }
1680 }
1681 #endif
1682
1683 return GLX_BAD_CONTEXT;
1684 }
1685
1686
1687 static int
1688 __glXGetSwapIntervalMESA(void)
1689 {
1690 #ifdef GLX_DIRECT_RENDERING
1691 struct glx_context *gc = __glXGetCurrentContext();
1692
1693 if (gc != NULL && gc->isDirect) {
1694 struct glx_screen *psc;
1695
1696 psc = GetGLXScreenConfigs( gc->currentDpy, gc->screen);
1697 if (psc->driScreen && psc->driScreen->getSwapInterval) {
1698 __GLXDRIdrawable *pdraw =
1699 GetGLXDRIDrawable(gc->currentDpy, gc->currentDrawable);
1700 return psc->driScreen->getSwapInterval(pdraw);
1701 }
1702 }
1703 #endif
1704
1705 return 0;
1706 }
1707
1708
1709 /*
1710 ** GLX_SGI_video_sync
1711 */
1712 static int
1713 __glXGetVideoSyncSGI(unsigned int *count)
1714 {
1715 int64_t ust, msc, sbc;
1716 int ret;
1717 struct glx_context *gc = __glXGetCurrentContext();
1718 struct glx_screen *psc;
1719 #ifdef GLX_DIRECT_RENDERING
1720 __GLXDRIdrawable *pdraw;
1721 #endif
1722
1723 if (!gc)
1724 return GLX_BAD_CONTEXT;
1725
1726 #ifdef GLX_DIRECT_RENDERING
1727 if (!gc->isDirect)
1728 return GLX_BAD_CONTEXT;
1729 #endif
1730
1731 psc = GetGLXScreenConfigs(gc->currentDpy, gc->screen);
1732 #ifdef GLX_DIRECT_RENDERING
1733 pdraw = GetGLXDRIDrawable(gc->currentDpy, gc->currentDrawable);
1734 #endif
1735
1736 /* FIXME: Looking at the GLX_SGI_video_sync spec in the extension registry,
1737 * FIXME: there should be a GLX encoding for this call. I can find no
1738 * FIXME: documentation for the GLX encoding.
1739 */
1740 #ifdef GLX_DIRECT_RENDERING
1741 if (psc->driScreen && psc->driScreen->getDrawableMSC) {
1742 ret = psc->driScreen->getDrawableMSC(psc, pdraw, &ust, &msc, &sbc);
1743 *count = (unsigned) msc;
1744 return (ret == True) ? 0 : GLX_BAD_CONTEXT;
1745 }
1746 #endif
1747
1748 return GLX_BAD_CONTEXT;
1749 }
1750
1751 static int
1752 __glXWaitVideoSyncSGI(int divisor, int remainder, unsigned int *count)
1753 {
1754 struct glx_context *gc = __glXGetCurrentContext();
1755 struct glx_screen *psc;
1756 #ifdef GLX_DIRECT_RENDERING
1757 __GLXDRIdrawable *pdraw;
1758 #endif
1759 int64_t ust, msc, sbc;
1760 int ret;
1761
1762 if (divisor <= 0 || remainder < 0)
1763 return GLX_BAD_VALUE;
1764
1765 if (!gc)
1766 return GLX_BAD_CONTEXT;
1767
1768 #ifdef GLX_DIRECT_RENDERING
1769 if (!gc->isDirect)
1770 return GLX_BAD_CONTEXT;
1771 #endif
1772
1773 psc = GetGLXScreenConfigs( gc->currentDpy, gc->screen);
1774 #ifdef GLX_DIRECT_RENDERING
1775 pdraw = GetGLXDRIDrawable(gc->currentDpy, gc->currentDrawable);
1776 #endif
1777
1778 #ifdef GLX_DIRECT_RENDERING
1779 if (psc->driScreen && psc->driScreen->waitForMSC) {
1780 ret = psc->driScreen->waitForMSC(pdraw, 0, divisor, remainder, &ust, &msc,
1781 &sbc);
1782 *count = (unsigned) msc;
1783 return (ret == True) ? 0 : GLX_BAD_CONTEXT;
1784 }
1785 #endif
1786
1787 return GLX_BAD_CONTEXT;
1788 }
1789
1790 #endif /* GLX_USE_APPLEGL */
1791
1792 /*
1793 ** GLX_SGIX_fbconfig
1794 ** Many of these functions are aliased to GLX 1.3 entry points in the
1795 ** GLX_functions table.
1796 */
1797
1798 _X_EXPORT
1799 GLX_ALIAS(int, glXGetFBConfigAttribSGIX,
1800 (Display * dpy, GLXFBConfigSGIX config, int attribute, int *value),
1801 (dpy, config, attribute, value), glXGetFBConfigAttrib)
1802
1803 _X_EXPORT GLX_ALIAS(GLXFBConfigSGIX *, glXChooseFBConfigSGIX,
1804 (Display * dpy, int screen, int *attrib_list,
1805 int *nelements), (dpy, screen, attrib_list, nelements),
1806 glXChooseFBConfig)
1807
1808 _X_EXPORT GLX_ALIAS(XVisualInfo *, glXGetVisualFromFBConfigSGIX,
1809 (Display * dpy, GLXFBConfigSGIX config),
1810 (dpy, config), glXGetVisualFromFBConfig)
1811
1812 _X_EXPORT GLXPixmap
1813 glXCreateGLXPixmapWithConfigSGIX(Display * dpy,
1814 GLXFBConfigSGIX fbconfig,
1815 Pixmap pixmap)
1816 {
1817 #ifndef GLX_USE_APPLEGL
1818 xGLXVendorPrivateWithReplyReq *vpreq;
1819 xGLXCreateGLXPixmapWithConfigSGIXReq *req;
1820 GLXPixmap xid = None;
1821 CARD8 opcode;
1822 struct glx_screen *psc;
1823 #endif
1824 struct glx_config *config = (struct glx_config *) fbconfig;
1825
1826
1827 if ((dpy == NULL) || (config == NULL)) {
1828 return None;
1829 }
1830 #ifdef GLX_USE_APPLEGL
1831 if(apple_glx_pixmap_create(dpy, config->screen, pixmap, config))
1832 return None;
1833 return pixmap;
1834 #else
1835
1836 psc = GetGLXScreenConfigs(dpy, config->screen);
1837 if ((psc != NULL)
1838 && __glXExtensionBitIsEnabled(psc, SGIX_fbconfig_bit)) {
1839 opcode = __glXSetupForCommand(dpy);
1840 if (!opcode) {
1841 return None;
1842 }
1843
1844 /* Send the glXCreateGLXPixmapWithConfigSGIX request */
1845 LockDisplay(dpy);
1846 GetReqExtra(GLXVendorPrivateWithReply,
1847 sz_xGLXCreateGLXPixmapWithConfigSGIXReq -
1848 sz_xGLXVendorPrivateWithReplyReq, vpreq);
1849 req = (xGLXCreateGLXPixmapWithConfigSGIXReq *) vpreq;
1850 req->reqType = opcode;
1851 req->glxCode = X_GLXVendorPrivateWithReply;
1852 req->vendorCode = X_GLXvop_CreateGLXPixmapWithConfigSGIX;
1853 req->screen = config->screen;
1854 req->fbconfig = config->fbconfigID;
1855 req->pixmap = pixmap;
1856 req->glxpixmap = xid = XAllocID(dpy);
1857 UnlockDisplay(dpy);
1858 SyncHandle();
1859 }
1860
1861 return xid;
1862 #endif
1863 }
1864
1865 _X_EXPORT GLXContext
1866 glXCreateContextWithConfigSGIX(Display * dpy,
1867 GLXFBConfigSGIX fbconfig, int renderType,
1868 GLXContext shareList, Bool allowDirect)
1869 {
1870 GLXContext gc = NULL;
1871 struct glx_config *config = (struct glx_config *) fbconfig;
1872 struct glx_screen *psc;
1873
1874
1875 if ((dpy == NULL) || (config == NULL)) {
1876 return None;
1877 }
1878
1879 psc = GetGLXScreenConfigs(dpy, config->screen);
1880 if ((psc != NULL)
1881 && __glXExtensionBitIsEnabled(psc, SGIX_fbconfig_bit)) {
1882 gc = CreateContext(dpy, config->fbconfigID, config, shareList,
1883 allowDirect,
1884 X_GLXvop_CreateContextWithConfigSGIX, renderType,
1885 config->screen);
1886 }
1887
1888 return gc;
1889 }
1890
1891
1892 _X_EXPORT GLXFBConfigSGIX
1893 glXGetFBConfigFromVisualSGIX(Display * dpy, XVisualInfo * vis)
1894 {
1895 struct glx_display *priv;
1896 struct glx_screen *psc = NULL;
1897
1898 if ((GetGLXPrivScreenConfig(dpy, vis->screen, &priv, &psc) != Success)
1899 && __glXExtensionBitIsEnabled(psc, SGIX_fbconfig_bit)
1900 && (psc->configs->fbconfigID != (int) GLX_DONT_CARE)) {
1901 return (GLXFBConfigSGIX) glx_config_find_visual(psc->configs,
1902 vis->visualid);
1903 }
1904
1905 return NULL;
1906 }
1907
1908 #ifndef GLX_USE_APPLEGL
1909 /*
1910 ** GLX_SGIX_swap_group
1911 */
1912 static void
1913 __glXJoinSwapGroupSGIX(Display * dpy, GLXDrawable drawable,
1914 GLXDrawable member)
1915 {
1916 (void) dpy;
1917 (void) drawable;
1918 (void) member;
1919 }
1920
1921
1922 /*
1923 ** GLX_SGIX_swap_barrier
1924 */
1925 static void
1926 __glXBindSwapBarrierSGIX(Display * dpy, GLXDrawable drawable, int barrier)
1927 {
1928 (void) dpy;
1929 (void) drawable;
1930 (void) barrier;
1931 }
1932
1933 static Bool
1934 __glXQueryMaxSwapBarriersSGIX(Display * dpy, int screen, int *max)
1935 {
1936 (void) dpy;
1937 (void) screen;
1938 (void) max;
1939 return False;
1940 }
1941
1942
1943 /*
1944 ** GLX_OML_sync_control
1945 */
1946 static Bool
1947 __glXGetSyncValuesOML(Display * dpy, GLXDrawable drawable,
1948 int64_t * ust, int64_t * msc, int64_t * sbc)
1949 {
1950 struct glx_display * const priv = __glXInitialize(dpy);
1951 int ret;
1952 #ifdef GLX_DIRECT_RENDERING
1953 __GLXDRIdrawable *pdraw;
1954 #endif
1955 struct glx_screen *psc;
1956
1957 if (!priv)
1958 return False;
1959
1960 #ifdef GLX_DIRECT_RENDERING
1961 pdraw = GetGLXDRIDrawable(dpy, drawable);
1962 psc = pdraw ? pdraw->psc : NULL;
1963 if (pdraw && psc->driScreen->getDrawableMSC) {
1964 ret = psc->driScreen->getDrawableMSC(psc, pdraw, ust, msc, sbc);
1965 return ret;
1966 }
1967 #endif
1968
1969 return False;
1970 }
1971
1972 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
1973 _X_HIDDEN GLboolean
1974 __glxGetMscRate(__GLXDRIdrawable *glxDraw,
1975 int32_t * numerator, int32_t * denominator)
1976 {
1977 #ifdef XF86VIDMODE
1978 struct glx_screen *psc;
1979 XF86VidModeModeLine mode_line;
1980 int dot_clock;
1981 int i;
1982
1983 psc = glxDraw->psc;
1984 if (XF86VidModeQueryVersion(psc->dpy, &i, &i) &&
1985 XF86VidModeGetModeLine(psc->dpy, psc->scr, &dot_clock, &mode_line)) {
1986 unsigned n = dot_clock * 1000;
1987 unsigned d = mode_line.vtotal * mode_line.htotal;
1988
1989 # define V_INTERLACE 0x010
1990 # define V_DBLSCAN 0x020
1991
1992 if (mode_line.flags & V_INTERLACE)
1993 n *= 2;
1994 else if (mode_line.flags & V_DBLSCAN)
1995 d *= 2;
1996
1997 /* The OML_sync_control spec requires that if the refresh rate is a
1998 * whole number, that the returned numerator be equal to the refresh
1999 * rate and the denominator be 1.
2000 */
2001
2002 if (n % d == 0) {
2003 n /= d;
2004 d = 1;
2005 }
2006 else {
2007 static const unsigned f[] = { 13, 11, 7, 5, 3, 2, 0 };
2008
2009 /* This is a poor man's way to reduce a fraction. It's far from
2010 * perfect, but it will work well enough for this situation.
2011 */
2012
2013 for (i = 0; f[i] != 0; i++) {
2014 while (n % f[i] == 0 && d % f[i] == 0) {
2015 d /= f[i];
2016 n /= f[i];
2017 }
2018 }
2019 }
2020
2021 *numerator = n;
2022 *denominator = d;
2023
2024 return True;
2025 }
2026 else
2027 #endif
2028
2029 return False;
2030 }
2031 #endif
2032
2033 /**
2034 * Determine the refresh rate of the specified drawable and display.
2035 *
2036 * \param dpy Display whose refresh rate is to be determined.
2037 * \param drawable Drawable whose refresh rate is to be determined.
2038 * \param numerator Numerator of the refresh rate.
2039 * \param demoninator Denominator of the refresh rate.
2040 * \return If the refresh rate for the specified display and drawable could
2041 * be calculated, True is returned. Otherwise False is returned.
2042 *
2043 * \note This function is implemented entirely client-side. A lot of other
2044 * functionality is required to export GLX_OML_sync_control, so on
2045 * XFree86 this function can be called for direct-rendering contexts
2046 * when GLX_OML_sync_control appears in the client extension string.
2047 */
2048
2049 _X_HIDDEN GLboolean
2050 __glXGetMscRateOML(Display * dpy, GLXDrawable drawable,
2051 int32_t * numerator, int32_t * denominator)
2052 {
2053 #if defined( GLX_DIRECT_RENDERING ) && defined( XF86VIDMODE )
2054 __GLXDRIdrawable *draw = GetGLXDRIDrawable(dpy, drawable);
2055
2056 if (draw == NULL)
2057 return False;
2058
2059 return __glxGetMscRate(draw, numerator, denominator);
2060 #else
2061 (void) dpy;
2062 (void) drawable;
2063 (void) numerator;
2064 (void) denominator;
2065 #endif
2066 return False;
2067 }
2068
2069
2070 static int64_t
2071 __glXSwapBuffersMscOML(Display * dpy, GLXDrawable drawable,
2072 int64_t target_msc, int64_t divisor, int64_t remainder)
2073 {
2074 struct glx_context *gc = __glXGetCurrentContext();
2075 #ifdef GLX_DIRECT_RENDERING
2076 __GLXDRIdrawable *pdraw = GetGLXDRIDrawable(dpy, drawable);
2077 struct glx_screen *psc = pdraw ? pdraw->psc : NULL;
2078 #endif
2079
2080 if (!gc) /* no GLX for this */
2081 return -1;
2082
2083 #ifdef GLX_DIRECT_RENDERING
2084 if (!pdraw || !gc->isDirect)
2085 return -1;
2086 #endif
2087
2088 /* The OML_sync_control spec says these should "generate a GLX_BAD_VALUE
2089 * error", but it also says "It [glXSwapBuffersMscOML] will return a value
2090 * of -1 if the function failed because of errors detected in the input
2091 * parameters"
2092 */
2093 if (divisor < 0 || remainder < 0 || target_msc < 0)
2094 return -1;
2095 if (divisor > 0 && remainder >= divisor)
2096 return -1;
2097
2098 if (target_msc == 0 && divisor == 0 && remainder == 0)
2099 remainder = 1;
2100
2101 #ifdef GLX_DIRECT_RENDERING
2102 if (psc->driScreen && psc->driScreen->swapBuffers)
2103 return (*psc->driScreen->swapBuffers)(pdraw, target_msc, divisor,
2104 remainder);
2105 #endif
2106
2107 return -1;
2108 }
2109
2110
2111 static Bool
2112 __glXWaitForMscOML(Display * dpy, GLXDrawable drawable,
2113 int64_t target_msc, int64_t divisor,
2114 int64_t remainder, int64_t * ust,
2115 int64_t * msc, int64_t * sbc)
2116 {
2117 #ifdef GLX_DIRECT_RENDERING
2118 __GLXDRIdrawable *pdraw = GetGLXDRIDrawable(dpy, drawable);
2119 struct glx_screen *psc = pdraw ? pdraw->psc : NULL;
2120 int ret;
2121 #endif
2122
2123
2124 /* The OML_sync_control spec says these should "generate a GLX_BAD_VALUE
2125 * error", but the return type in the spec is Bool.
2126 */
2127 if (divisor < 0 || remainder < 0 || target_msc < 0)
2128 return False;
2129 if (divisor > 0 && remainder >= divisor)
2130 return False;
2131
2132 #ifdef GLX_DIRECT_RENDERING
2133 if (pdraw && psc->driScreen && psc->driScreen->waitForMSC) {
2134 ret = psc->driScreen->waitForMSC(pdraw, target_msc, divisor, remainder,
2135 ust, msc, sbc);
2136 return ret;
2137 }
2138 #endif
2139
2140 return False;
2141 }
2142
2143
2144 static Bool
2145 __glXWaitForSbcOML(Display * dpy, GLXDrawable drawable,
2146 int64_t target_sbc, int64_t * ust,
2147 int64_t * msc, int64_t * sbc)
2148 {
2149 #ifdef GLX_DIRECT_RENDERING
2150 __GLXDRIdrawable *pdraw = GetGLXDRIDrawable(dpy, drawable);
2151 struct glx_screen *psc = pdraw ? pdraw->psc : NULL;
2152 int ret;
2153 #endif
2154
2155 /* The OML_sync_control spec says this should "generate a GLX_BAD_VALUE
2156 * error", but the return type in the spec is Bool.
2157 */
2158 if (target_sbc < 0)
2159 return False;
2160
2161 #ifdef GLX_DIRECT_RENDERING
2162 if (pdraw && psc->driScreen && psc->driScreen->waitForSBC) {
2163 ret = psc->driScreen->waitForSBC(pdraw, target_sbc, ust, msc, sbc);
2164 return ret;
2165 }
2166 #endif
2167
2168 return False;
2169 }
2170
2171 /*@}*/
2172
2173
2174 /**
2175 * Mesa extension stubs. These will help reduce portability problems.
2176 */
2177 /*@{*/
2178
2179 /**
2180 * Release all buffers associated with the specified GLX drawable.
2181 *
2182 * \todo
2183 * This function was intended for stand-alone Mesa. The issue there is that
2184 * the library doesn't get any notification when a window is closed. In
2185 * DRI there is a similar but slightly different issue. When GLX 1.3 is
2186 * supported, there are 3 different functions to destroy a drawable. It
2187 * should be possible to create GLX protocol (or have it determine which
2188 * protocol to use based on the type of the drawable) to have one function
2189 * do the work of 3. For the direct-rendering case, this function could
2190 * just call the driver's \c __DRIdrawableRec::destroyDrawable function.
2191 * This would reduce the frequency with which \c __driGarbageCollectDrawables
2192 * would need to be used. This really should be done as part of the new DRI
2193 * interface work.
2194 *
2195 * \sa http://oss.sgi.com/projects/ogl-sample/registry/MESA/release_buffers.txt
2196 * __driGarbageCollectDrawables
2197 * glXDestroyGLXPixmap
2198 * glXDestroyPbuffer glXDestroyPixmap glXDestroyWindow
2199 * glXDestroyGLXPbufferSGIX glXDestroyGLXVideoSourceSGIX
2200 */
2201 static Bool
2202 __glXReleaseBuffersMESA(Display * dpy, GLXDrawable d)
2203 {
2204 (void) dpy;
2205 (void) d;
2206 return False;
2207 }
2208
2209
2210 _X_EXPORT GLXPixmap
2211 glXCreateGLXPixmapMESA(Display * dpy, XVisualInfo * visual,
2212 Pixmap pixmap, Colormap cmap)
2213 {
2214 (void) dpy;
2215 (void) visual;
2216 (void) pixmap;
2217 (void) cmap;
2218 return 0;
2219 }
2220
2221 /*@}*/
2222
2223
2224 /**
2225 * GLX_MESA_copy_sub_buffer
2226 */
2227 #define X_GLXvop_CopySubBufferMESA 5154 /* temporary */
2228 static void
2229 __glXCopySubBufferMESA(Display * dpy, GLXDrawable drawable,
2230 int x, int y, int width, int height)
2231 {
2232 xGLXVendorPrivateReq *req;
2233 struct glx_context *gc;
2234 GLXContextTag tag;
2235 CARD32 *drawable_ptr;
2236 INT32 *x_ptr, *y_ptr, *w_ptr, *h_ptr;
2237 CARD8 opcode;
2238
2239 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
2240 __GLXDRIdrawable *pdraw = GetGLXDRIDrawable(dpy, drawable);
2241 if (pdraw != NULL) {
2242 struct glx_screen *psc = pdraw->psc;
2243 if (psc->driScreen->copySubBuffer != NULL) {
2244 glFlush();
2245 (*psc->driScreen->copySubBuffer) (pdraw, x, y, width, height);
2246 }
2247
2248 return;
2249 }
2250 #endif
2251
2252 opcode = __glXSetupForCommand(dpy);
2253 if (!opcode)
2254 return;
2255
2256 /*
2257 ** The calling thread may or may not have a current context. If it
2258 ** does, send the context tag so the server can do a flush.
2259 */
2260 gc = __glXGetCurrentContext();
2261 if ((gc != NULL) && (dpy == gc->currentDpy) &&
2262 ((drawable == gc->currentDrawable) ||
2263 (drawable == gc->currentReadable))) {
2264 tag = gc->currentContextTag;
2265 }
2266 else {
2267 tag = 0;
2268 }
2269
2270 LockDisplay(dpy);
2271 GetReqExtra(GLXVendorPrivate, sizeof(CARD32) + sizeof(INT32) * 4, req);
2272 req->reqType = opcode;
2273 req->glxCode = X_GLXVendorPrivate;
2274 req->vendorCode = X_GLXvop_CopySubBufferMESA;
2275 req->contextTag = tag;
2276
2277 drawable_ptr = (CARD32 *) (req + 1);
2278 x_ptr = (INT32 *) (drawable_ptr + 1);
2279 y_ptr = (INT32 *) (drawable_ptr + 2);
2280 w_ptr = (INT32 *) (drawable_ptr + 3);
2281 h_ptr = (INT32 *) (drawable_ptr + 4);
2282
2283 *drawable_ptr = drawable;
2284 *x_ptr = x;
2285 *y_ptr = y;
2286 *w_ptr = width;
2287 *h_ptr = height;
2288
2289 UnlockDisplay(dpy);
2290 SyncHandle();
2291 }
2292
2293 /*@{*/
2294 static void
2295 __glXBindTexImageEXT(Display * dpy,
2296 GLXDrawable drawable, int buffer, const int *attrib_list)
2297 {
2298 struct glx_context *gc = __glXGetCurrentContext();
2299
2300 if (gc == NULL || gc->vtable->bind_tex_image == NULL)
2301 return;
2302
2303 gc->vtable->bind_tex_image(dpy, drawable, buffer, attrib_list);
2304 }
2305
2306 static void
2307 __glXReleaseTexImageEXT(Display * dpy, GLXDrawable drawable, int buffer)
2308 {
2309 struct glx_context *gc = __glXGetCurrentContext();
2310
2311 if (gc == NULL || gc->vtable->release_tex_image == NULL)
2312 return;
2313
2314 gc->vtable->release_tex_image(dpy, drawable, buffer);
2315 }
2316
2317 /*@}*/
2318
2319 #endif /* GLX_USE_APPLEGL */
2320
2321 /**
2322 * \c strdup is actually not a standard ANSI C or POSIX routine.
2323 * Irix will not define it if ANSI mode is in effect.
2324 *
2325 * \sa strdup
2326 */
2327 _X_HIDDEN char *
2328 __glXstrdup(const char *str)
2329 {
2330 char *copy;
2331 copy = (char *) Xmalloc(strlen(str) + 1);
2332 if (!copy)
2333 return NULL;
2334 strcpy(copy, str);
2335 return copy;
2336 }
2337
2338 /*
2339 ** glXGetProcAddress support
2340 */
2341
2342 struct name_address_pair
2343 {
2344 const char *Name;
2345 GLvoid *Address;
2346 };
2347
2348 #define GLX_FUNCTION(f) { # f, (GLvoid *) f }
2349 #define GLX_FUNCTION2(n,f) { # n, (GLvoid *) f }
2350
2351 static const struct name_address_pair GLX_functions[] = {
2352 /*** GLX_VERSION_1_0 ***/
2353 GLX_FUNCTION(glXChooseVisual),
2354 GLX_FUNCTION(glXCopyContext),
2355 GLX_FUNCTION(glXCreateContext),
2356 GLX_FUNCTION(glXCreateGLXPixmap),
2357 GLX_FUNCTION(glXDestroyContext),
2358 GLX_FUNCTION(glXDestroyGLXPixmap),
2359 GLX_FUNCTION(glXGetConfig),
2360 GLX_FUNCTION(glXGetCurrentContext),
2361 GLX_FUNCTION(glXGetCurrentDrawable),
2362 GLX_FUNCTION(glXIsDirect),
2363 GLX_FUNCTION(glXMakeCurrent),
2364 GLX_FUNCTION(glXQueryExtension),
2365 GLX_FUNCTION(glXQueryVersion),
2366 GLX_FUNCTION(glXSwapBuffers),
2367 GLX_FUNCTION(glXUseXFont),
2368 GLX_FUNCTION(glXWaitGL),
2369 GLX_FUNCTION(glXWaitX),
2370
2371 /*** GLX_VERSION_1_1 ***/
2372 GLX_FUNCTION(glXGetClientString),
2373 GLX_FUNCTION(glXQueryExtensionsString),
2374 GLX_FUNCTION(glXQueryServerString),
2375
2376 /*** GLX_VERSION_1_2 ***/
2377 GLX_FUNCTION(glXGetCurrentDisplay),
2378
2379 /*** GLX_VERSION_1_3 ***/
2380 GLX_FUNCTION(glXChooseFBConfig),
2381 GLX_FUNCTION(glXCreateNewContext),
2382 GLX_FUNCTION(glXCreatePbuffer),
2383 GLX_FUNCTION(glXCreatePixmap),
2384 GLX_FUNCTION(glXCreateWindow),
2385 GLX_FUNCTION(glXDestroyPbuffer),
2386 GLX_FUNCTION(glXDestroyPixmap),
2387 GLX_FUNCTION(glXDestroyWindow),
2388 GLX_FUNCTION(glXGetCurrentReadDrawable),
2389 GLX_FUNCTION(glXGetFBConfigAttrib),
2390 GLX_FUNCTION(glXGetFBConfigs),
2391 GLX_FUNCTION(glXGetSelectedEvent),
2392 GLX_FUNCTION(glXGetVisualFromFBConfig),
2393 GLX_FUNCTION(glXMakeContextCurrent),
2394 GLX_FUNCTION(glXQueryContext),
2395 GLX_FUNCTION(glXQueryDrawable),
2396 GLX_FUNCTION(glXSelectEvent),
2397
2398 #ifndef GLX_USE_APPLEGL
2399 /*** GLX_SGI_swap_control ***/
2400 GLX_FUNCTION2(glXSwapIntervalSGI, __glXSwapIntervalSGI),
2401
2402 /*** GLX_SGI_video_sync ***/
2403 GLX_FUNCTION2(glXGetVideoSyncSGI, __glXGetVideoSyncSGI),
2404 GLX_FUNCTION2(glXWaitVideoSyncSGI, __glXWaitVideoSyncSGI),
2405
2406 /*** GLX_SGI_make_current_read ***/
2407 GLX_FUNCTION2(glXMakeCurrentReadSGI, glXMakeContextCurrent),
2408 GLX_FUNCTION2(glXGetCurrentReadDrawableSGI, glXGetCurrentReadDrawable),
2409
2410 /*** GLX_EXT_import_context ***/
2411 GLX_FUNCTION(glXFreeContextEXT),
2412 GLX_FUNCTION(glXGetContextIDEXT),
2413 GLX_FUNCTION2(glXGetCurrentDisplayEXT, glXGetCurrentDisplay),
2414 GLX_FUNCTION(glXImportContextEXT),
2415 GLX_FUNCTION2(glXQueryContextInfoEXT, glXQueryContext),
2416 #endif
2417
2418 /*** GLX_SGIX_fbconfig ***/
2419 GLX_FUNCTION2(glXGetFBConfigAttribSGIX, glXGetFBConfigAttrib),
2420 GLX_FUNCTION2(glXChooseFBConfigSGIX, glXChooseFBConfig),
2421 GLX_FUNCTION(glXCreateGLXPixmapWithConfigSGIX),
2422 GLX_FUNCTION(glXCreateContextWithConfigSGIX),
2423 GLX_FUNCTION2(glXGetVisualFromFBConfigSGIX, glXGetVisualFromFBConfig),
2424 GLX_FUNCTION(glXGetFBConfigFromVisualSGIX),
2425
2426 #ifndef GLX_USE_APPLEGL
2427 /*** GLX_SGIX_pbuffer ***/
2428 GLX_FUNCTION(glXCreateGLXPbufferSGIX),
2429 GLX_FUNCTION(glXDestroyGLXPbufferSGIX),
2430 GLX_FUNCTION(glXQueryGLXPbufferSGIX),
2431 GLX_FUNCTION(glXSelectEventSGIX),
2432 GLX_FUNCTION(glXGetSelectedEventSGIX),
2433
2434 /*** GLX_SGIX_swap_group ***/
2435 GLX_FUNCTION2(glXJoinSwapGroupSGIX, __glXJoinSwapGroupSGIX),
2436
2437 /*** GLX_SGIX_swap_barrier ***/
2438 GLX_FUNCTION2(glXBindSwapBarrierSGIX, __glXBindSwapBarrierSGIX),
2439 GLX_FUNCTION2(glXQueryMaxSwapBarriersSGIX, __glXQueryMaxSwapBarriersSGIX),
2440
2441 /*** GLX_MESA_copy_sub_buffer ***/
2442 GLX_FUNCTION2(glXCopySubBufferMESA, __glXCopySubBufferMESA),
2443
2444 /*** GLX_MESA_pixmap_colormap ***/
2445 GLX_FUNCTION(glXCreateGLXPixmapMESA),
2446
2447 /*** GLX_MESA_release_buffers ***/
2448 GLX_FUNCTION2(glXReleaseBuffersMESA, __glXReleaseBuffersMESA),
2449
2450 /*** GLX_MESA_swap_control ***/
2451 GLX_FUNCTION2(glXSwapIntervalMESA, __glXSwapIntervalMESA),
2452 GLX_FUNCTION2(glXGetSwapIntervalMESA, __glXGetSwapIntervalMESA),
2453 #endif
2454
2455 /*** GLX_ARB_get_proc_address ***/
2456 GLX_FUNCTION(glXGetProcAddressARB),
2457
2458 /*** GLX 1.4 ***/
2459 GLX_FUNCTION2(glXGetProcAddress, glXGetProcAddressARB),
2460
2461 #ifndef GLX_USE_APPLEGL
2462 /*** GLX_OML_sync_control ***/
2463 GLX_FUNCTION2(glXWaitForSbcOML, __glXWaitForSbcOML),
2464 GLX_FUNCTION2(glXWaitForMscOML, __glXWaitForMscOML),
2465 GLX_FUNCTION2(glXSwapBuffersMscOML, __glXSwapBuffersMscOML),
2466 GLX_FUNCTION2(glXGetMscRateOML, __glXGetMscRateOML),
2467 GLX_FUNCTION2(glXGetSyncValuesOML, __glXGetSyncValuesOML),
2468
2469 /*** GLX_EXT_texture_from_pixmap ***/
2470 GLX_FUNCTION2(glXBindTexImageEXT, __glXBindTexImageEXT),
2471 GLX_FUNCTION2(glXReleaseTexImageEXT, __glXReleaseTexImageEXT),
2472 #endif
2473
2474 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
2475 /*** DRI configuration ***/
2476 GLX_FUNCTION(glXGetScreenDriver),
2477 GLX_FUNCTION(glXGetDriverConfig),
2478 #endif
2479
2480 {NULL, NULL} /* end of list */
2481 };
2482
2483 #ifndef GLX_USE_APPLEGL
2484 static const GLvoid *
2485 get_glx_proc_address(const char *funcName)
2486 {
2487 GLuint i;
2488
2489 /* try static functions */
2490 for (i = 0; GLX_functions[i].Name; i++) {
2491 if (strcmp(GLX_functions[i].Name, funcName) == 0)
2492 return GLX_functions[i].Address;
2493 }
2494
2495 return NULL;
2496 }
2497 #endif
2498
2499 /**
2500 * Get the address of a named GL function. This is the pre-GLX 1.4 name for
2501 * \c glXGetProcAddress.
2502 *
2503 * \param procName Name of a GL or GLX function.
2504 * \returns A pointer to the named function
2505 *
2506 * \sa glXGetProcAddress
2507 */
2508 _X_EXPORT void (*glXGetProcAddressARB(const GLubyte * procName)) (void)
2509 {
2510 typedef void (*gl_function) (void);
2511 gl_function f;
2512
2513
2514 /* Search the table of GLX and internal functions first. If that
2515 * fails and the supplied name could be a valid core GL name, try
2516 * searching the core GL function table. This check is done to prevent
2517 * DRI based drivers from searching the core GL function table for
2518 * internal API functions.
2519 */
2520 #ifdef GLX_USE_APPLEGL
2521 f = (gl_function) apple_glx_get_proc_address(procName);
2522 #else
2523 f = (gl_function) get_glx_proc_address((const char *) procName);
2524 if ((f == NULL) && (procName[0] == 'g') && (procName[1] == 'l')
2525 && (procName[2] != 'X')) {
2526 #ifdef GLX_SHARED_GLAPI
2527 f = (gl_function) __indirect_get_proc_address((const char *) procName);
2528 #endif
2529 if (!f)
2530 f = (gl_function) _glapi_get_proc_address((const char *) procName);
2531 }
2532 #endif
2533 return f;
2534 }
2535
2536 /**
2537 * Get the address of a named GL function. This is the GLX 1.4 name for
2538 * \c glXGetProcAddressARB.
2539 *
2540 * \param procName Name of a GL or GLX function.
2541 * \returns A pointer to the named function
2542 *
2543 * \sa glXGetProcAddressARB
2544 */
2545 _X_EXPORT void (*glXGetProcAddress(const GLubyte * procName)) (void)
2546 #if defined(__GNUC__) && !defined(GLX_ALIAS_UNSUPPORTED)
2547 __attribute__ ((alias("glXGetProcAddressARB")));
2548 #else
2549 {
2550 return glXGetProcAddressARB(procName);
2551 }
2552 #endif /* __GNUC__ */
2553
2554
2555 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
2556 /**
2557 * Get the unadjusted system time (UST). Currently, the UST is measured in
2558 * microseconds since Epoc. The actual resolution of the UST may vary from
2559 * system to system, and the units may vary from release to release.
2560 * Drivers should not call this function directly. They should instead use
2561 * \c glXGetProcAddress to obtain a pointer to the function.
2562 *
2563 * \param ust Location to store the 64-bit UST
2564 * \returns Zero on success or a negative errno value on failure.
2565 *
2566 * \sa glXGetProcAddress, PFNGLXGETUSTPROC
2567 *
2568 * \since Internal API version 20030317.
2569 */
2570 _X_HIDDEN int
2571 __glXGetUST(int64_t * ust)
2572 {
2573 struct timeval tv;
2574
2575 if (ust == NULL) {
2576 return -EFAULT;
2577 }
2578
2579 if (gettimeofday(&tv, NULL) == 0) {
2580 ust[0] = (tv.tv_sec * 1000000) + tv.tv_usec;
2581 return 0;
2582 }
2583 else {
2584 return -errno;
2585 }
2586 }
2587 #endif /* GLX_DIRECT_RENDERING */