c707d0cedf31ca279371b988e67128c60709338a
[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 #include "glx_error.h"
41
42 #ifdef GLX_DIRECT_RENDERING
43 #ifdef GLX_USE_APPLEGL
44 #include "apple/apple_glx_context.h"
45 #include "apple/apple_glx.h"
46 #else
47 #include <sys/time.h>
48 #ifdef XF86VIDMODE
49 #include <X11/extensions/xf86vmode.h>
50 #endif
51 #endif
52 #endif
53
54 #include <X11/Xlib-xcb.h>
55 #include <xcb/xcb.h>
56 #include <xcb/glx.h>
57 #include "GL/mesa_glinterop.h"
58
59 static const char __glXGLXClientVendorName[] = "Mesa Project and SGI";
60 static const char __glXGLXClientVersion[] = "1.4";
61
62 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
63
64 /**
65 * Get the __DRIdrawable for the drawable associated with a GLXContext
66 *
67 * \param dpy The display associated with \c drawable.
68 * \param drawable GLXDrawable whose __DRIdrawable part is to be retrieved.
69 * \param scrn_num If non-NULL, the drawables screen is stored there
70 * \returns A pointer to the context's __DRIdrawable on success, or NULL if
71 * the drawable is not associated with a direct-rendering context.
72 */
73 _X_HIDDEN __GLXDRIdrawable *
74 GetGLXDRIDrawable(Display * dpy, GLXDrawable drawable)
75 {
76 struct glx_display *priv = __glXInitialize(dpy);
77 __GLXDRIdrawable *pdraw;
78
79 if (priv == NULL)
80 return NULL;
81
82 if (__glxHashLookup(priv->drawHash, drawable, (void *) &pdraw) == 0)
83 return pdraw;
84
85 return NULL;
86 }
87
88 #endif
89
90 _X_HIDDEN struct glx_drawable *
91 GetGLXDrawable(Display *dpy, GLXDrawable drawable)
92 {
93 struct glx_display *priv = __glXInitialize(dpy);
94 struct glx_drawable *glxDraw;
95
96 if (priv == NULL)
97 return NULL;
98
99 if (__glxHashLookup(priv->glXDrawHash, drawable, (void *) &glxDraw) == 0)
100 return glxDraw;
101
102 return NULL;
103 }
104
105 _X_HIDDEN int
106 InitGLXDrawable(Display *dpy, struct glx_drawable *glxDraw, XID xDrawable,
107 GLXDrawable drawable)
108 {
109 struct glx_display *priv = __glXInitialize(dpy);
110
111 if (!priv)
112 return -1;
113
114 glxDraw->xDrawable = xDrawable;
115 glxDraw->drawable = drawable;
116 glxDraw->lastEventSbc = 0;
117 glxDraw->eventSbcWrap = 0;
118
119 return __glxHashInsert(priv->glXDrawHash, drawable, glxDraw);
120 }
121
122 _X_HIDDEN void
123 DestroyGLXDrawable(Display *dpy, GLXDrawable drawable)
124 {
125 struct glx_display *priv = __glXInitialize(dpy);
126 struct glx_drawable *glxDraw;
127
128 if (!priv)
129 return;
130
131 glxDraw = GetGLXDrawable(dpy, drawable);
132 __glxHashDelete(priv->glXDrawHash, drawable);
133 free(glxDraw);
134 }
135
136 /**
137 * Get the GLX per-screen data structure associated with a GLX context.
138 *
139 * \param dpy Display for which the GLX per-screen information is to be
140 * retrieved.
141 * \param scrn Screen on \c dpy for which the GLX per-screen information is
142 * to be retrieved.
143 * \returns A pointer to the GLX per-screen data if \c dpy and \c scrn
144 * specify a valid GLX screen, or NULL otherwise.
145 *
146 * \todo Should this function validate that \c scrn is within the screen
147 * number range for \c dpy?
148 */
149
150 _X_HIDDEN struct glx_screen *
151 GetGLXScreenConfigs(Display * dpy, int scrn)
152 {
153 struct glx_display *const priv = __glXInitialize(dpy);
154
155 return (priv
156 && priv->screens !=
157 NULL) ? priv->screens[scrn] : NULL;
158 }
159
160
161 static int
162 GetGLXPrivScreenConfig(Display * dpy, int scrn, struct glx_display ** ppriv,
163 struct glx_screen ** ppsc)
164 {
165 /* Initialize the extension, if needed . This has the added value
166 * of initializing/allocating the display private
167 */
168
169 if (dpy == NULL) {
170 return GLX_NO_EXTENSION;
171 }
172
173 *ppriv = __glXInitialize(dpy);
174 if (*ppriv == NULL) {
175 return GLX_NO_EXTENSION;
176 }
177
178 /* Check screen number to see if its valid */
179 if ((scrn < 0) || (scrn >= ScreenCount(dpy))) {
180 return GLX_BAD_SCREEN;
181 }
182
183 /* Check to see if the GL is supported on this screen */
184 *ppsc = (*ppriv)->screens[scrn];
185 if ((*ppsc)->configs == NULL && (*ppsc)->visuals == NULL) {
186 /* No support for GL on this screen regardless of visual */
187 return GLX_BAD_VISUAL;
188 }
189
190 return Success;
191 }
192
193
194 /**
195 * Determine if a \c GLXFBConfig supplied by the application is valid.
196 *
197 * \param dpy Application supplied \c Display pointer.
198 * \param config Application supplied \c GLXFBConfig.
199 *
200 * \returns If the \c GLXFBConfig is valid, the a pointer to the matching
201 * \c struct glx_config structure is returned. Otherwise, \c NULL
202 * is returned.
203 */
204 static struct glx_config *
205 ValidateGLXFBConfig(Display * dpy, GLXFBConfig fbconfig)
206 {
207 struct glx_display *const priv = __glXInitialize(dpy);
208 int num_screens = ScreenCount(dpy);
209 unsigned i;
210 struct glx_config *config;
211
212 if (priv != NULL) {
213 for (i = 0; i < num_screens; i++) {
214 for (config = priv->screens[i]->configs; config != NULL;
215 config = config->next) {
216 if (config == (struct glx_config *) fbconfig) {
217 return config;
218 }
219 }
220 }
221 }
222
223 return NULL;
224 }
225
226 /**
227 * Verifies context's GLX_RENDER_TYPE value with config.
228 *
229 * \param config GLX FBConfig which will support the returned renderType.
230 * \param renderType The context render type to be verified.
231 * \return True if the value of context renderType was approved, or 0 if no
232 * valid value was found.
233 */
234 Bool
235 validate_renderType_against_config(const struct glx_config *config,
236 int renderType)
237 {
238 /* GLX_EXT_no_config_context supports any render type */
239 if (!config)
240 return True;
241
242 switch (renderType) {
243 case GLX_RGBA_TYPE:
244 return (config->renderType & GLX_RGBA_BIT) != 0;
245 case GLX_COLOR_INDEX_TYPE:
246 return (config->renderType & GLX_COLOR_INDEX_BIT) != 0;
247 case GLX_RGBA_FLOAT_TYPE_ARB:
248 return (config->renderType & GLX_RGBA_FLOAT_BIT_ARB) != 0;
249 case GLX_RGBA_UNSIGNED_FLOAT_TYPE_EXT:
250 return (config->renderType & GLX_RGBA_UNSIGNED_FLOAT_BIT_EXT) != 0;
251 default:
252 break;
253 }
254 return 0;
255 }
256
257 _X_HIDDEN Bool
258 glx_context_init(struct glx_context *gc,
259 struct glx_screen *psc, struct glx_config *config)
260 {
261 gc->majorOpcode = __glXSetupForCommand(psc->display->dpy);
262 if (!gc->majorOpcode)
263 return False;
264
265 gc->screen = psc->scr;
266 gc->psc = psc;
267 gc->config = config;
268 gc->isDirect = GL_TRUE;
269 gc->currentContextTag = -1;
270
271 return True;
272 }
273
274
275 /**
276 * Create a new context.
277 *
278 * \param renderType For FBConfigs, what is the rendering type?
279 */
280
281 static GLXContext
282 CreateContext(Display *dpy, int generic_id, struct glx_config *config,
283 GLXContext shareList_user, Bool allowDirect,
284 unsigned code, int renderType, int screen)
285 {
286 struct glx_context *gc;
287 struct glx_screen *psc;
288 struct glx_context *shareList = (struct glx_context *) shareList_user;
289 if (dpy == NULL)
290 return NULL;
291
292 psc = GetGLXScreenConfigs(dpy, screen);
293 if (psc == NULL)
294 return NULL;
295
296 if (generic_id == None)
297 return NULL;
298
299 gc = NULL;
300 #ifdef GLX_USE_APPLEGL
301 gc = applegl_create_context(psc, config, shareList, renderType);
302 #else
303 if (allowDirect && psc->vtable->create_context)
304 gc = psc->vtable->create_context(psc, config, shareList, renderType);
305 if (!gc)
306 gc = indirect_create_context(psc, config, shareList, renderType);
307 #endif
308 if (!gc)
309 return NULL;
310
311 LockDisplay(dpy);
312 switch (code) {
313 case X_GLXCreateContext: {
314 xGLXCreateContextReq *req;
315
316 /* Send the glXCreateContext request */
317 GetReq(GLXCreateContext, req);
318 req->reqType = gc->majorOpcode;
319 req->glxCode = X_GLXCreateContext;
320 req->context = gc->xid = XAllocID(dpy);
321 req->visual = generic_id;
322 req->screen = screen;
323 req->shareList = shareList ? shareList->xid : None;
324 req->isDirect = gc->isDirect;
325 break;
326 }
327
328 case X_GLXCreateNewContext: {
329 xGLXCreateNewContextReq *req;
330
331 /* Send the glXCreateNewContext request */
332 GetReq(GLXCreateNewContext, req);
333 req->reqType = gc->majorOpcode;
334 req->glxCode = X_GLXCreateNewContext;
335 req->context = gc->xid = XAllocID(dpy);
336 req->fbconfig = generic_id;
337 req->screen = screen;
338 req->renderType = renderType;
339 req->shareList = shareList ? shareList->xid : None;
340 req->isDirect = gc->isDirect;
341 break;
342 }
343
344 case X_GLXvop_CreateContextWithConfigSGIX: {
345 xGLXVendorPrivateWithReplyReq *vpreq;
346 xGLXCreateContextWithConfigSGIXReq *req;
347
348 /* Send the glXCreateNewContext request */
349 GetReqExtra(GLXVendorPrivateWithReply,
350 sz_xGLXCreateContextWithConfigSGIXReq -
351 sz_xGLXVendorPrivateWithReplyReq, vpreq);
352 req = (xGLXCreateContextWithConfigSGIXReq *) vpreq;
353 req->reqType = gc->majorOpcode;
354 req->glxCode = X_GLXVendorPrivateWithReply;
355 req->vendorCode = X_GLXvop_CreateContextWithConfigSGIX;
356 req->context = gc->xid = XAllocID(dpy);
357 req->fbconfig = generic_id;
358 req->screen = screen;
359 req->renderType = renderType;
360 req->shareList = shareList ? shareList->xid : None;
361 req->isDirect = gc->isDirect;
362 break;
363 }
364
365 default:
366 /* What to do here? This case is the sign of an internal error. It
367 * should never be reachable.
368 */
369 break;
370 }
371
372 UnlockDisplay(dpy);
373 SyncHandle();
374
375 gc->share_xid = shareList ? shareList->xid : None;
376 gc->imported = GL_FALSE;
377
378 return (GLXContext) gc;
379 }
380
381 _GLX_PUBLIC GLXContext
382 glXCreateContext(Display * dpy, XVisualInfo * vis,
383 GLXContext shareList, Bool allowDirect)
384 {
385 struct glx_config *config = NULL;
386 int renderType = GLX_RGBA_TYPE;
387
388 #if defined(GLX_DIRECT_RENDERING) || defined(GLX_USE_APPLEGL)
389 struct glx_screen *const psc = GetGLXScreenConfigs(dpy, vis->screen);
390
391 if (psc)
392 config = glx_config_find_visual(psc->visuals, vis->visualid);
393
394 if (config == NULL) {
395 xError error;
396
397 error.errorCode = BadValue;
398 error.resourceID = vis->visualid;
399 error.sequenceNumber = dpy->request;
400 error.type = X_Error;
401 error.majorCode = __glXSetupForCommand(dpy);
402 error.minorCode = X_GLXCreateContext;
403 _XError(dpy, &error);
404 return None;
405 }
406
407 /* Choose the context render type based on DRI config values. It is
408 * unusual to set this type from config, but we have no other choice, as
409 * this old API does not provide renderType parameter.
410 */
411 if (config->renderType & GLX_RGBA_FLOAT_BIT_ARB) {
412 renderType = GLX_RGBA_FLOAT_TYPE_ARB;
413 } else if (config->renderType & GLX_RGBA_UNSIGNED_FLOAT_BIT_EXT) {
414 renderType = GLX_RGBA_UNSIGNED_FLOAT_TYPE_EXT;
415 } else if (config->renderType & GLX_RGBA_BIT) {
416 renderType = GLX_RGBA_TYPE;
417 } else if (config->renderType & GLX_COLOR_INDEX_BIT) {
418 renderType = GLX_COLOR_INDEX_TYPE;
419 } else if (config->rgbMode) {
420 /* If we're here, then renderType is not set correctly. Let's use a
421 * safeguard - any TrueColor or DirectColor mode is RGB mode. Such
422 * default value is needed by old DRI drivers, which didn't set
423 * renderType correctly as the value was just ignored.
424 */
425 renderType = GLX_RGBA_TYPE;
426 } else {
427 /* Safeguard - only one option left, all non-RGB modes are indexed
428 * modes. Again, this allows drivers with invalid renderType to work
429 * properly.
430 */
431 renderType = GLX_COLOR_INDEX_TYPE;
432 }
433 #endif
434
435 return CreateContext(dpy, vis->visualid, config, shareList, allowDirect,
436 X_GLXCreateContext, renderType, vis->screen);
437 }
438
439 static void
440 glx_send_destroy_context(Display *dpy, XID xid)
441 {
442 CARD8 opcode = __glXSetupForCommand(dpy);
443 xGLXDestroyContextReq *req;
444
445 LockDisplay(dpy);
446 GetReq(GLXDestroyContext, req);
447 req->reqType = opcode;
448 req->glxCode = X_GLXDestroyContext;
449 req->context = xid;
450 UnlockDisplay(dpy);
451 SyncHandle();
452 }
453
454 /*
455 ** Destroy the named context
456 */
457
458 _GLX_PUBLIC void
459 glXDestroyContext(Display * dpy, GLXContext ctx)
460 {
461 struct glx_context *gc = (struct glx_context *) ctx;
462
463 if (gc == NULL || gc->xid == None)
464 return;
465
466 __glXLock();
467 if (!gc->imported)
468 glx_send_destroy_context(dpy, gc->xid);
469
470 if (gc->currentDpy) {
471 /* This context is bound to some thread. According to the man page,
472 * we should not actually delete the context until it's unbound.
473 * Note that we set gc->xid = None above. In MakeContextCurrent()
474 * we check for that and delete the context there.
475 */
476 gc->xid = None;
477 } else {
478 gc->vtable->destroy(gc);
479 }
480 __glXUnlock();
481 }
482
483 /*
484 ** Return the major and minor version #s for the GLX extension
485 */
486 _GLX_PUBLIC Bool
487 glXQueryVersion(Display * dpy, int *major, int *minor)
488 {
489 struct glx_display *priv;
490
491 /* Init the extension. This fetches the major and minor version. */
492 priv = __glXInitialize(dpy);
493 if (!priv)
494 return False;
495
496 if (major)
497 *major = priv->majorVersion;
498 if (minor)
499 *minor = priv->minorVersion;
500 return True;
501 }
502
503 /*
504 ** Query the existence of the GLX extension
505 */
506 _GLX_PUBLIC Bool
507 glXQueryExtension(Display * dpy, int *errorBase, int *eventBase)
508 {
509 int major_op, erb, evb;
510 Bool rv;
511
512 rv = XQueryExtension(dpy, GLX_EXTENSION_NAME, &major_op, &evb, &erb);
513 if (rv) {
514 if (errorBase)
515 *errorBase = erb;
516 if (eventBase)
517 *eventBase = evb;
518 }
519 return rv;
520 }
521
522 /*
523 ** Put a barrier in the token stream that forces the GL to finish its
524 ** work before X can proceed.
525 */
526 _GLX_PUBLIC void
527 glXWaitGL(void)
528 {
529 struct glx_context *gc = __glXGetCurrentContext();
530
531 if (gc != &dummyContext && gc->vtable->wait_gl)
532 gc->vtable->wait_gl(gc);
533 }
534
535 /*
536 ** Put a barrier in the token stream that forces X to finish its
537 ** work before GL can proceed.
538 */
539 _GLX_PUBLIC void
540 glXWaitX(void)
541 {
542 struct glx_context *gc = __glXGetCurrentContext();
543
544 if (gc != &dummyContext && gc->vtable->wait_x)
545 gc->vtable->wait_x(gc);
546 }
547
548 _GLX_PUBLIC void
549 glXUseXFont(Font font, int first, int count, int listBase)
550 {
551 struct glx_context *gc = __glXGetCurrentContext();
552
553 if (gc != &dummyContext && gc->vtable->use_x_font)
554 gc->vtable->use_x_font(gc, font, first, count, listBase);
555 }
556
557 /************************************************************************/
558
559 /*
560 ** Copy the source context to the destination context using the
561 ** attribute "mask".
562 */
563 _GLX_PUBLIC void
564 glXCopyContext(Display * dpy, GLXContext source_user,
565 GLXContext dest_user, unsigned long mask)
566 {
567 struct glx_context *source = (struct glx_context *) source_user;
568 struct glx_context *dest = (struct glx_context *) dest_user;
569 #ifdef GLX_USE_APPLEGL
570 struct glx_context *gc = __glXGetCurrentContext();
571 int errorcode;
572 bool x11error;
573
574 if(apple_glx_copy_context(gc->driContext, source->driContext, dest->driContext,
575 mask, &errorcode, &x11error)) {
576 __glXSendError(dpy, errorcode, 0, X_GLXCopyContext, x11error);
577 }
578
579 #else
580 xGLXCopyContextReq *req;
581 struct glx_context *gc = __glXGetCurrentContext();
582 GLXContextTag tag;
583 CARD8 opcode;
584
585 opcode = __glXSetupForCommand(dpy);
586 if (!opcode) {
587 return;
588 }
589
590 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
591 if (gc->isDirect) {
592 /* NOT_DONE: This does not work yet */
593 }
594 #endif
595
596 /*
597 ** If the source is the current context, send its tag so that the context
598 ** can be flushed before the copy.
599 */
600 if (source == gc && dpy == gc->currentDpy) {
601 tag = gc->currentContextTag;
602 }
603 else {
604 tag = 0;
605 }
606
607 /* Send the glXCopyContext request */
608 LockDisplay(dpy);
609 GetReq(GLXCopyContext, req);
610 req->reqType = opcode;
611 req->glxCode = X_GLXCopyContext;
612 req->source = source ? source->xid : None;
613 req->dest = dest ? dest->xid : None;
614 req->mask = mask;
615 req->contextTag = tag;
616 UnlockDisplay(dpy);
617 SyncHandle();
618 #endif /* GLX_USE_APPLEGL */
619 }
620
621
622 /**
623 * Determine if a context uses direct rendering.
624 *
625 * \param dpy Display where the context was created.
626 * \param contextID ID of the context to be tested.
627 *
628 * \returns \c True if the context is direct rendering or not.
629 */
630 static Bool
631 __glXIsDirect(Display * dpy, GLXContextID contextID)
632 {
633 CARD8 opcode;
634 xcb_connection_t *c;
635 xcb_generic_error_t *err;
636 xcb_glx_is_direct_reply_t *reply;
637 Bool is_direct;
638
639 opcode = __glXSetupForCommand(dpy);
640 if (!opcode) {
641 return False;
642 }
643
644 c = XGetXCBConnection(dpy);
645 reply = xcb_glx_is_direct_reply(c, xcb_glx_is_direct(c, contextID), &err);
646 is_direct = (reply != NULL && reply->is_direct) ? True : False;
647
648 if (err != NULL) {
649 __glXSendErrorForXcb(dpy, err);
650 free(err);
651 }
652
653 free(reply);
654
655 return is_direct;
656 }
657
658 /**
659 * \todo
660 * Shouldn't this function \b always return \c False when
661 * \c GLX_DIRECT_RENDERING is not defined? Do we really need to bother with
662 * the GLX protocol here at all?
663 */
664 _GLX_PUBLIC Bool
665 glXIsDirect(Display * dpy, GLXContext gc_user)
666 {
667 struct glx_context *gc = (struct glx_context *) gc_user;
668
669 if (!gc) {
670 return False;
671 }
672 else if (gc->isDirect) {
673 return True;
674 }
675 #ifdef GLX_USE_APPLEGL /* TODO: indirect on darwin */
676 return False;
677 #else
678 return __glXIsDirect(dpy, gc->xid);
679 #endif
680 }
681
682 _GLX_PUBLIC GLXPixmap
683 glXCreateGLXPixmap(Display * dpy, XVisualInfo * vis, Pixmap pixmap)
684 {
685 #ifdef GLX_USE_APPLEGL
686 int screen = vis->screen;
687 struct glx_screen *const psc = GetGLXScreenConfigs(dpy, screen);
688 const struct glx_config *config;
689
690 config = glx_config_find_visual(psc->visuals, vis->visualid);
691
692 if(apple_glx_pixmap_create(dpy, vis->screen, pixmap, config))
693 return None;
694
695 return pixmap;
696 #else
697 xGLXCreateGLXPixmapReq *req;
698 struct glx_drawable *glxDraw;
699 GLXPixmap xid;
700 CARD8 opcode;
701
702 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
703 struct glx_display *const priv = __glXInitialize(dpy);
704
705 if (priv == NULL)
706 return None;
707 #endif
708
709 opcode = __glXSetupForCommand(dpy);
710 if (!opcode) {
711 return None;
712 }
713
714 glxDraw = malloc(sizeof(*glxDraw));
715 if (!glxDraw)
716 return None;
717
718 /* Send the glXCreateGLXPixmap request */
719 LockDisplay(dpy);
720 GetReq(GLXCreateGLXPixmap, req);
721 req->reqType = opcode;
722 req->glxCode = X_GLXCreateGLXPixmap;
723 req->screen = vis->screen;
724 req->visual = vis->visualid;
725 req->pixmap = pixmap;
726 req->glxpixmap = xid = XAllocID(dpy);
727 UnlockDisplay(dpy);
728 SyncHandle();
729
730 if (InitGLXDrawable(dpy, glxDraw, pixmap, req->glxpixmap)) {
731 free(glxDraw);
732 return None;
733 }
734
735 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
736 do {
737 /* FIXME: Maybe delay __DRIdrawable creation until the drawable
738 * is actually bound to a context... */
739
740 __GLXDRIdrawable *pdraw;
741 struct glx_screen *psc;
742 struct glx_config *config;
743
744 psc = priv->screens[vis->screen];
745 if (psc->driScreen == NULL)
746 return xid;
747
748 config = glx_config_find_visual(psc->visuals, vis->visualid);
749 pdraw = psc->driScreen->createDrawable(psc, pixmap, xid, config);
750 if (pdraw == NULL) {
751 fprintf(stderr, "failed to create pixmap\n");
752 xid = None;
753 break;
754 }
755
756 if (__glxHashInsert(priv->drawHash, xid, pdraw)) {
757 (*pdraw->destroyDrawable) (pdraw);
758 xid = None;
759 break;
760 }
761 } while (0);
762
763 if (xid == None) {
764 xGLXDestroyGLXPixmapReq *dreq;
765 LockDisplay(dpy);
766 GetReq(GLXDestroyGLXPixmap, dreq);
767 dreq->reqType = opcode;
768 dreq->glxCode = X_GLXDestroyGLXPixmap;
769 dreq->glxpixmap = xid;
770 UnlockDisplay(dpy);
771 SyncHandle();
772 }
773 #endif
774
775 return xid;
776 #endif
777 }
778
779 /*
780 ** Destroy the named pixmap
781 */
782 _GLX_PUBLIC void
783 glXDestroyGLXPixmap(Display * dpy, GLXPixmap glxpixmap)
784 {
785 #ifdef GLX_USE_APPLEGL
786 if(apple_glx_pixmap_destroy(dpy, glxpixmap))
787 __glXSendError(dpy, GLXBadPixmap, glxpixmap, X_GLXDestroyPixmap, false);
788 #else
789 xGLXDestroyGLXPixmapReq *req;
790 CARD8 opcode;
791
792 opcode = __glXSetupForCommand(dpy);
793 if (!opcode) {
794 return;
795 }
796
797 /* Send the glXDestroyGLXPixmap request */
798 LockDisplay(dpy);
799 GetReq(GLXDestroyGLXPixmap, req);
800 req->reqType = opcode;
801 req->glxCode = X_GLXDestroyGLXPixmap;
802 req->glxpixmap = glxpixmap;
803 UnlockDisplay(dpy);
804 SyncHandle();
805
806 DestroyGLXDrawable(dpy, glxpixmap);
807
808 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
809 {
810 struct glx_display *const priv = __glXInitialize(dpy);
811 __GLXDRIdrawable *pdraw = GetGLXDRIDrawable(dpy, glxpixmap);
812
813 if (priv != NULL && pdraw != NULL) {
814 (*pdraw->destroyDrawable) (pdraw);
815 __glxHashDelete(priv->drawHash, glxpixmap);
816 }
817 }
818 #endif
819 #endif /* GLX_USE_APPLEGL */
820 }
821
822 _GLX_PUBLIC void
823 glXSwapBuffers(Display * dpy, GLXDrawable drawable)
824 {
825 #ifdef GLX_USE_APPLEGL
826 struct glx_context * gc = __glXGetCurrentContext();
827 if(gc != &dummyContext && apple_glx_is_current_drawable(dpy, gc->driContext, drawable)) {
828 apple_glx_swap_buffers(gc->driContext);
829 } else {
830 __glXSendError(dpy, GLXBadCurrentWindow, 0, X_GLXSwapBuffers, false);
831 }
832 #else
833 struct glx_context *gc;
834 GLXContextTag tag;
835 CARD8 opcode;
836 xcb_connection_t *c;
837
838 gc = __glXGetCurrentContext();
839
840 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
841 {
842 __GLXDRIdrawable *pdraw = GetGLXDRIDrawable(dpy, drawable);
843
844 if (pdraw != NULL) {
845 Bool flush = gc != &dummyContext && drawable == gc->currentDrawable;
846
847 (*pdraw->psc->driScreen->swapBuffers)(pdraw, 0, 0, 0, flush);
848 return;
849 }
850 }
851 #endif
852
853 opcode = __glXSetupForCommand(dpy);
854 if (!opcode) {
855 return;
856 }
857
858 /*
859 ** The calling thread may or may not have a current context. If it
860 ** does, send the context tag so the server can do a flush.
861 */
862 if ((gc != &dummyContext) && (dpy == gc->currentDpy) &&
863 ((drawable == gc->currentDrawable)
864 || (drawable == gc->currentReadable))) {
865 tag = gc->currentContextTag;
866 }
867 else {
868 tag = 0;
869 }
870
871 c = XGetXCBConnection(dpy);
872 xcb_glx_swap_buffers(c, tag, drawable);
873 xcb_flush(c);
874 #endif /* GLX_USE_APPLEGL */
875 }
876
877
878 /*
879 ** Return configuration information for the given display, screen and
880 ** visual combination.
881 */
882 _GLX_PUBLIC int
883 glXGetConfig(Display * dpy, XVisualInfo * vis, int attribute,
884 int *value_return)
885 {
886 struct glx_display *priv;
887 struct glx_screen *psc;
888 struct glx_config *config;
889 int status;
890
891 status = GetGLXPrivScreenConfig(dpy, vis->screen, &priv, &psc);
892 if (status == Success) {
893 config = glx_config_find_visual(psc->visuals, vis->visualid);
894
895 /* Lookup attribute after first finding a match on the visual */
896 if (config != NULL) {
897 return glx_config_get(config, attribute, value_return);
898 }
899
900 status = GLX_BAD_VISUAL;
901 }
902
903 /*
904 ** If we can't find the config for this visual, this visual is not
905 ** supported by the OpenGL implementation on the server.
906 */
907 if ((status == GLX_BAD_VISUAL) && (attribute == GLX_USE_GL)) {
908 *value_return = False;
909 status = Success;
910 }
911
912 return status;
913 }
914
915 /************************************************************************/
916
917 static void
918 init_fbconfig_for_chooser(struct glx_config * config,
919 GLboolean fbconfig_style_tags)
920 {
921 memset(config, 0, sizeof(struct glx_config));
922 config->visualID = (XID) GLX_DONT_CARE;
923 config->visualType = GLX_DONT_CARE;
924
925 /* glXChooseFBConfig specifies different defaults for these properties than
926 * glXChooseVisual.
927 */
928 if (fbconfig_style_tags) {
929 config->rgbMode = GL_TRUE;
930 config->doubleBufferMode = GLX_DONT_CARE;
931 config->renderType = GLX_RGBA_BIT;
932 }
933
934 config->drawableType = GLX_WINDOW_BIT;
935 config->visualRating = GLX_DONT_CARE;
936 config->transparentPixel = GLX_NONE;
937 config->transparentRed = GLX_DONT_CARE;
938 config->transparentGreen = GLX_DONT_CARE;
939 config->transparentBlue = GLX_DONT_CARE;
940 config->transparentAlpha = GLX_DONT_CARE;
941 config->transparentIndex = GLX_DONT_CARE;
942
943 config->xRenderable = GLX_DONT_CARE;
944 config->fbconfigID = (GLXFBConfigID) (GLX_DONT_CARE);
945
946 config->swapMethod = GLX_DONT_CARE;
947 }
948
949 #define MATCH_DONT_CARE( param ) \
950 do { \
951 if ( ((int) a-> param != (int) GLX_DONT_CARE) \
952 && (a-> param != b-> param) ) { \
953 return False; \
954 } \
955 } while ( 0 )
956
957 #define MATCH_MINIMUM( param ) \
958 do { \
959 if ( ((int) a-> param != (int) GLX_DONT_CARE) \
960 && (a-> param > b-> param) ) { \
961 return False; \
962 } \
963 } while ( 0 )
964
965 #define MATCH_EXACT( param ) \
966 do { \
967 if ( a-> param != b-> param) { \
968 return False; \
969 } \
970 } while ( 0 )
971
972 /* Test that all bits from a are contained in b */
973 #define MATCH_MASK(param) \
974 do { \
975 if ( ((int) a-> param != (int) GLX_DONT_CARE) \
976 && ((a->param & ~b->param) != 0) ) { \
977 return False; \
978 } \
979 } while (0);
980
981 /**
982 * Determine if two GLXFBConfigs are compatible.
983 *
984 * \param a Application specified config to test.
985 * \param b Server specified config to test against \c a.
986 */
987 static Bool
988 fbconfigs_compatible(const struct glx_config * const a,
989 const struct glx_config * const b)
990 {
991 MATCH_DONT_CARE(doubleBufferMode);
992 MATCH_DONT_CARE(visualType);
993 MATCH_DONT_CARE(visualRating);
994 MATCH_DONT_CARE(xRenderable);
995 MATCH_DONT_CARE(fbconfigID);
996 MATCH_DONT_CARE(swapMethod);
997
998 MATCH_MINIMUM(rgbBits);
999 MATCH_MINIMUM(numAuxBuffers);
1000 MATCH_MINIMUM(redBits);
1001 MATCH_MINIMUM(greenBits);
1002 MATCH_MINIMUM(blueBits);
1003 MATCH_MINIMUM(alphaBits);
1004 MATCH_MINIMUM(depthBits);
1005 MATCH_MINIMUM(stencilBits);
1006 MATCH_MINIMUM(accumRedBits);
1007 MATCH_MINIMUM(accumGreenBits);
1008 MATCH_MINIMUM(accumBlueBits);
1009 MATCH_MINIMUM(accumAlphaBits);
1010 MATCH_MINIMUM(sampleBuffers);
1011 MATCH_MINIMUM(maxPbufferWidth);
1012 MATCH_MINIMUM(maxPbufferHeight);
1013 MATCH_MINIMUM(maxPbufferPixels);
1014 MATCH_MINIMUM(samples);
1015
1016 MATCH_DONT_CARE(stereoMode);
1017 MATCH_EXACT(level);
1018
1019 MATCH_MASK(drawableType);
1020 MATCH_MASK(renderType);
1021 MATCH_DONT_CARE(sRGBCapable);
1022
1023 /* There is a bug in a few of the XFree86 DDX drivers. They contain
1024 * visuals with a "transparent type" of 0 when they really mean GLX_NONE.
1025 * Technically speaking, it is a bug in the DDX driver, but there is
1026 * enough of an installed base to work around the problem here. In any
1027 * case, 0 is not a valid value of the transparent type, so we'll treat 0
1028 * from the app as GLX_DONT_CARE. We'll consider GLX_NONE from the app and
1029 * 0 from the server to be a match to maintain backward compatibility with
1030 * the (broken) drivers.
1031 */
1032
1033 if (a->transparentPixel != (int) GLX_DONT_CARE && a->transparentPixel != 0) {
1034 if (a->transparentPixel == GLX_NONE) {
1035 if (b->transparentPixel != GLX_NONE && b->transparentPixel != 0)
1036 return False;
1037 }
1038 else {
1039 MATCH_EXACT(transparentPixel);
1040 }
1041
1042 switch (a->transparentPixel) {
1043 case GLX_TRANSPARENT_RGB:
1044 MATCH_DONT_CARE(transparentRed);
1045 MATCH_DONT_CARE(transparentGreen);
1046 MATCH_DONT_CARE(transparentBlue);
1047 MATCH_DONT_CARE(transparentAlpha);
1048 break;
1049
1050 case GLX_TRANSPARENT_INDEX:
1051 MATCH_DONT_CARE(transparentIndex);
1052 break;
1053
1054 default:
1055 break;
1056 }
1057 }
1058
1059 return True;
1060 }
1061
1062
1063 /* There's some trickly language in the GLX spec about how this is supposed
1064 * to work. Basically, if a given component size is either not specified
1065 * or the requested size is zero, it is supposed to act like PERFER_SMALLER.
1066 * Well, that's really hard to do with the code as-is. This behavior is
1067 * closer to correct, but still not technically right.
1068 */
1069 #define PREFER_LARGER_OR_ZERO(comp) \
1070 do { \
1071 if ( ((*a)-> comp) != ((*b)-> comp) ) { \
1072 if ( ((*a)-> comp) == 0 ) { \
1073 return -1; \
1074 } \
1075 else if ( ((*b)-> comp) == 0 ) { \
1076 return 1; \
1077 } \
1078 else { \
1079 return ((*b)-> comp) - ((*a)-> comp) ; \
1080 } \
1081 } \
1082 } while( 0 )
1083
1084 #define PREFER_LARGER(comp) \
1085 do { \
1086 if ( ((*a)-> comp) != ((*b)-> comp) ) { \
1087 return ((*b)-> comp) - ((*a)-> comp) ; \
1088 } \
1089 } while( 0 )
1090
1091 #define PREFER_SMALLER(comp) \
1092 do { \
1093 if ( ((*a)-> comp) != ((*b)-> comp) ) { \
1094 return ((*a)-> comp) - ((*b)-> comp) ; \
1095 } \
1096 } while( 0 )
1097
1098 /**
1099 * Compare two GLXFBConfigs. This function is intended to be used as the
1100 * compare function passed in to qsort.
1101 *
1102 * \returns If \c a is a "better" config, according to the specification of
1103 * SGIX_fbconfig, a number less than zero is returned. If \c b is
1104 * better, then a number greater than zero is return. If both are
1105 * equal, zero is returned.
1106 * \sa qsort, glXChooseVisual, glXChooseFBConfig, glXChooseFBConfigSGIX
1107 */
1108 static int
1109 fbconfig_compare(struct glx_config **a, struct glx_config **b)
1110 {
1111 /* The order of these comparisons must NOT change. It is defined by
1112 * the GLX 1.4 specification.
1113 */
1114
1115 PREFER_SMALLER(visualSelectGroup);
1116
1117 /* The sort order for the visualRating is GLX_NONE, GLX_SLOW, and
1118 * GLX_NON_CONFORMANT_CONFIG. It just so happens that this is the
1119 * numerical sort order of the enums (0x8000, 0x8001, and 0x800D).
1120 */
1121 PREFER_SMALLER(visualRating);
1122
1123 /* This isn't quite right. It is supposed to compare the sum of the
1124 * components the user specifically set minimums for.
1125 */
1126 PREFER_LARGER_OR_ZERO(redBits);
1127 PREFER_LARGER_OR_ZERO(greenBits);
1128 PREFER_LARGER_OR_ZERO(blueBits);
1129 PREFER_LARGER_OR_ZERO(alphaBits);
1130
1131 PREFER_SMALLER(rgbBits);
1132
1133 if (((*a)->doubleBufferMode != (*b)->doubleBufferMode)) {
1134 /* Prefer single-buffer.
1135 */
1136 return (!(*a)->doubleBufferMode) ? -1 : 1;
1137 }
1138
1139 PREFER_SMALLER(numAuxBuffers);
1140
1141 PREFER_SMALLER(sampleBuffers);
1142 PREFER_SMALLER(samples);
1143
1144 PREFER_LARGER_OR_ZERO(depthBits);
1145 PREFER_SMALLER(stencilBits);
1146
1147 /* This isn't quite right. It is supposed to compare the sum of the
1148 * components the user specifically set minimums for.
1149 */
1150 PREFER_LARGER_OR_ZERO(accumRedBits);
1151 PREFER_LARGER_OR_ZERO(accumGreenBits);
1152 PREFER_LARGER_OR_ZERO(accumBlueBits);
1153 PREFER_LARGER_OR_ZERO(accumAlphaBits);
1154
1155 PREFER_SMALLER(visualType);
1156
1157 /* None of the pbuffer or fbconfig specs say that this comparison needs
1158 * to happen at all, but it seems like it should.
1159 */
1160 PREFER_LARGER(maxPbufferWidth);
1161 PREFER_LARGER(maxPbufferHeight);
1162 PREFER_LARGER(maxPbufferPixels);
1163
1164 return 0;
1165 }
1166
1167
1168 /**
1169 * Selects and sorts a subset of the supplied configs based on the attributes.
1170 * This function forms to basis of \c glXChooseFBConfig and
1171 * \c glXChooseFBConfigSGIX.
1172 *
1173 * \param configs Array of pointers to possible configs. The elements of
1174 * this array that do not meet the criteria will be set to
1175 * NULL. The remaining elements will be sorted according to
1176 * the various visual / FBConfig selection rules.
1177 * \param num_configs Number of elements in the \c configs array.
1178 * \param attribList Attributes used select from \c configs. This array is
1179 * terminated by a \c None tag. The array is of the form
1180 * expected by \c glXChooseFBConfig (where every tag has a
1181 * value).
1182 * \returns The number of valid elements left in \c configs.
1183 *
1184 * \sa glXChooseFBConfig, glXChooseFBConfigSGIX
1185 */
1186 static int
1187 choose_fbconfig(struct glx_config ** configs, int num_configs,
1188 const int *attribList)
1189 {
1190 struct glx_config test_config;
1191 int base;
1192 int i;
1193
1194 /* This is a fairly direct implementation of the selection method
1195 * described by GLX_SGIX_fbconfig. Start by culling out all the
1196 * configs that are not compatible with the selected parameter
1197 * list.
1198 */
1199
1200 init_fbconfig_for_chooser(&test_config, GL_TRUE);
1201 __glXInitializeVisualConfigFromTags(&test_config, 512,
1202 (const INT32 *) attribList,
1203 GL_TRUE, GL_TRUE);
1204
1205 base = 0;
1206 for (i = 0; i < num_configs; i++) {
1207 if (fbconfigs_compatible(&test_config, configs[i])) {
1208 configs[base] = configs[i];
1209 base++;
1210 }
1211 }
1212
1213 if (base == 0) {
1214 return 0;
1215 }
1216
1217 if (base < num_configs) {
1218 (void) memset(&configs[base], 0, sizeof(void *) * (num_configs - base));
1219 }
1220
1221 /* After the incompatible configs are removed, the resulting
1222 * list is sorted according to the rules set out in the various
1223 * specifications.
1224 */
1225
1226 qsort(configs, base, sizeof(struct glx_config *),
1227 (int (*)(const void *, const void *)) fbconfig_compare);
1228 return base;
1229 }
1230
1231
1232
1233
1234 /*
1235 ** Return the visual that best matches the template. Return None if no
1236 ** visual matches the template.
1237 */
1238 _GLX_PUBLIC XVisualInfo *
1239 glXChooseVisual(Display * dpy, int screen, int *attribList)
1240 {
1241 XVisualInfo *visualList = NULL;
1242 struct glx_display *priv;
1243 struct glx_screen *psc;
1244 struct glx_config test_config;
1245 struct glx_config *config;
1246 struct glx_config *best_config = NULL;
1247
1248 /*
1249 ** Get a list of all visuals, return if list is empty
1250 */
1251 if (GetGLXPrivScreenConfig(dpy, screen, &priv, &psc) != Success) {
1252 return None;
1253 }
1254
1255
1256 /*
1257 ** Build a template from the defaults and the attribute list
1258 ** Free visual list and return if an unexpected token is encountered
1259 */
1260 init_fbconfig_for_chooser(&test_config, GL_FALSE);
1261 __glXInitializeVisualConfigFromTags(&test_config, 512,
1262 (const INT32 *) attribList,
1263 GL_TRUE, GL_FALSE);
1264
1265 /*
1266 ** Eliminate visuals that don't meet minimum requirements
1267 ** Compute a score for those that do
1268 ** Remember which visual, if any, got the highest score
1269 ** If no visual is acceptable, return None
1270 ** Otherwise, create an XVisualInfo list with just the selected X visual
1271 ** and return this.
1272 */
1273 for (config = psc->visuals; config != NULL; config = config->next) {
1274 if (fbconfigs_compatible(&test_config, config)
1275 && ((best_config == NULL) ||
1276 (fbconfig_compare (&config, &best_config) < 0))) {
1277 XVisualInfo visualTemplate;
1278 XVisualInfo *newList;
1279 int i;
1280
1281 visualTemplate.screen = screen;
1282 visualTemplate.visualid = config->visualID;
1283 newList = XGetVisualInfo(dpy, VisualScreenMask | VisualIDMask,
1284 &visualTemplate, &i);
1285
1286 if (newList) {
1287 free(visualList);
1288 visualList = newList;
1289 best_config = config;
1290 }
1291 }
1292 }
1293
1294 #ifdef GLX_USE_APPLEGL
1295 if(visualList && env_var_as_boolean("LIBGL_DUMP_VISUALID", false)) {
1296 printf("visualid 0x%lx\n", visualList[0].visualid);
1297 }
1298 #endif
1299
1300 return visualList;
1301 }
1302
1303
1304 _GLX_PUBLIC const char *
1305 glXQueryExtensionsString(Display * dpy, int screen)
1306 {
1307 struct glx_screen *psc;
1308 struct glx_display *priv;
1309
1310 if (GetGLXPrivScreenConfig(dpy, screen, &priv, &psc) != Success) {
1311 return NULL;
1312 }
1313
1314 if (!psc->effectiveGLXexts) {
1315 if (!psc->serverGLXexts) {
1316 psc->serverGLXexts =
1317 __glXQueryServerString(dpy, priv->majorOpcode, screen,
1318 GLX_EXTENSIONS);
1319 }
1320
1321 __glXCalculateUsableExtensions(psc,
1322 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
1323 (psc->driScreen != NULL),
1324 #else
1325 GL_FALSE,
1326 #endif
1327 priv->minorVersion);
1328 }
1329
1330 return psc->effectiveGLXexts;
1331 }
1332
1333 _GLX_PUBLIC const char *
1334 glXGetClientString(Display * dpy, int name)
1335 {
1336 (void) dpy;
1337
1338 switch (name) {
1339 case GLX_VENDOR:
1340 return (__glXGLXClientVendorName);
1341 case GLX_VERSION:
1342 return (__glXGLXClientVersion);
1343 case GLX_EXTENSIONS:
1344 return (__glXGetClientExtensions());
1345 default:
1346 return NULL;
1347 }
1348 }
1349
1350 _GLX_PUBLIC const char *
1351 glXQueryServerString(Display * dpy, int screen, int name)
1352 {
1353 struct glx_screen *psc;
1354 struct glx_display *priv;
1355 const char **str;
1356
1357
1358 if (GetGLXPrivScreenConfig(dpy, screen, &priv, &psc) != Success) {
1359 return NULL;
1360 }
1361
1362 switch (name) {
1363 case GLX_VENDOR:
1364 str = &priv->serverGLXvendor;
1365 break;
1366 case GLX_VERSION:
1367 str = &priv->serverGLXversion;
1368 break;
1369 case GLX_EXTENSIONS:
1370 str = &psc->serverGLXexts;
1371 break;
1372 default:
1373 return NULL;
1374 }
1375
1376 if (*str == NULL) {
1377 *str = __glXQueryServerString(dpy, priv->majorOpcode, screen, name);
1378 }
1379
1380 return *str;
1381 }
1382
1383
1384 /*
1385 ** EXT_import_context
1386 */
1387
1388 _GLX_PUBLIC Display *
1389 glXGetCurrentDisplay(void)
1390 {
1391 struct glx_context *gc = __glXGetCurrentContext();
1392 if (gc == &dummyContext)
1393 return NULL;
1394 return gc->currentDpy;
1395 }
1396
1397 _GLX_PUBLIC
1398 GLX_ALIAS(Display *, glXGetCurrentDisplayEXT, (void), (),
1399 glXGetCurrentDisplay)
1400
1401 #ifndef GLX_USE_APPLEGL
1402 _GLX_PUBLIC GLXContext
1403 glXImportContextEXT(Display *dpy, GLXContextID contextID)
1404 {
1405 struct glx_display *priv = __glXInitialize(dpy);
1406 struct glx_screen *psc = NULL;
1407 xGLXQueryContextReply reply;
1408 CARD8 opcode;
1409 struct glx_context *ctx;
1410 int i, renderType = GLX_RGBA_TYPE; /* By default, assume RGBA context */
1411 XID share = None;
1412 struct glx_config *mode = NULL;
1413 uint32_t fbconfigID = 0;
1414 uint32_t visualID = 0;
1415 uint32_t screen = 0;
1416 Bool got_screen = False;
1417
1418 if (priv == NULL)
1419 return NULL;
1420
1421 /* The GLX_EXT_import_context spec says:
1422 *
1423 * "If <contextID> does not refer to a valid context, then a BadContext
1424 * error is generated; if <contextID> refers to direct rendering
1425 * context then no error is generated but glXImportContextEXT returns
1426 * NULL."
1427 *
1428 * If contextID is None, generate BadContext on the client-side. Other
1429 * sorts of invalid contexts will be detected by the server in the
1430 * __glXIsDirect call.
1431 */
1432 if (contextID == None) {
1433 __glXSendError(dpy, GLXBadContext, contextID, X_GLXIsDirect, false);
1434 return NULL;
1435 }
1436
1437 if (__glXIsDirect(dpy, contextID))
1438 return NULL;
1439
1440 opcode = __glXSetupForCommand(dpy);
1441 if (!opcode)
1442 return 0;
1443
1444 /* Send the glXQueryContextInfoEXT request */
1445 LockDisplay(dpy);
1446
1447 if (priv->majorVersion > 1 || priv->minorVersion >= 3) {
1448 xGLXQueryContextReq *req;
1449
1450 GetReq(GLXQueryContext, req);
1451
1452 req->reqType = opcode;
1453 req->glxCode = X_GLXQueryContext;
1454 req->context = contextID;
1455 }
1456 else {
1457 xGLXVendorPrivateReq *vpreq;
1458 xGLXQueryContextInfoEXTReq *req;
1459
1460 GetReqExtra(GLXVendorPrivate,
1461 sz_xGLXQueryContextInfoEXTReq - sz_xGLXVendorPrivateReq,
1462 vpreq);
1463 req = (xGLXQueryContextInfoEXTReq *) vpreq;
1464 req->reqType = opcode;
1465 req->glxCode = X_GLXVendorPrivateWithReply;
1466 req->vendorCode = X_GLXvop_QueryContextInfoEXT;
1467 req->context = contextID;
1468 }
1469
1470 if (_XReply(dpy, (xReply *) & reply, 0, False) &&
1471 reply.n < (INT32_MAX / 2)) {
1472
1473 for (i = 0; i < reply.n * 2; i++) {
1474 int prop[2];
1475
1476 _XRead(dpy, (char *)prop, sizeof(prop));
1477 switch (prop[0]) {
1478 case GLX_SCREEN:
1479 screen = prop[1];
1480 got_screen = True;
1481 break;
1482 case GLX_SHARE_CONTEXT_EXT:
1483 share = prop[1];
1484 break;
1485 case GLX_VISUAL_ID_EXT:
1486 visualID = prop[1];
1487 break;
1488 case GLX_FBCONFIG_ID:
1489 fbconfigID = prop[1];
1490 break;
1491 case GLX_RENDER_TYPE:
1492 renderType = prop[1];
1493 break;
1494 }
1495 }
1496 }
1497 UnlockDisplay(dpy);
1498 SyncHandle();
1499
1500 if (!got_screen)
1501 return NULL;
1502
1503 psc = GetGLXScreenConfigs(dpy, screen);
1504 if (psc == NULL)
1505 return NULL;
1506
1507 if (fbconfigID != 0) {
1508 mode = glx_config_find_fbconfig(psc->configs, fbconfigID);
1509 } else if (visualID != 0) {
1510 mode = glx_config_find_visual(psc->visuals, visualID);
1511 }
1512
1513 if (mode == NULL)
1514 return NULL;
1515
1516 ctx = indirect_create_context(psc, mode, NULL, renderType);
1517 if (ctx == NULL)
1518 return NULL;
1519
1520 ctx->xid = contextID;
1521 ctx->imported = GL_TRUE;
1522 ctx->share_xid = share;
1523
1524 return (GLXContext) ctx;
1525 }
1526
1527 #endif
1528
1529 _GLX_PUBLIC int
1530 glXQueryContext(Display * dpy, GLXContext ctx_user, int attribute, int *value)
1531 {
1532 struct glx_context *ctx = (struct glx_context *) ctx_user;
1533
1534 switch (attribute) {
1535 case GLX_SHARE_CONTEXT_EXT:
1536 *value = ctx->share_xid;
1537 break;
1538 case GLX_VISUAL_ID_EXT:
1539 *value = ctx->config ? ctx->config->visualID : None;
1540 break;
1541 case GLX_SCREEN:
1542 *value = ctx->screen;
1543 break;
1544 case GLX_FBCONFIG_ID:
1545 *value = ctx->config ? ctx->config->fbconfigID : None;
1546 break;
1547 case GLX_RENDER_TYPE:
1548 *value = ctx->renderType;
1549 break;
1550 default:
1551 return GLX_BAD_ATTRIBUTE;
1552 }
1553 return Success;
1554 }
1555
1556 _GLX_PUBLIC
1557 GLX_ALIAS(int, glXQueryContextInfoEXT,
1558 (Display * dpy, GLXContext ctx, int attribute, int *value),
1559 (dpy, ctx, attribute, value), glXQueryContext)
1560
1561 _GLX_PUBLIC GLXContextID glXGetContextIDEXT(const GLXContext ctx_user)
1562 {
1563 struct glx_context *ctx = (struct glx_context *) ctx_user;
1564
1565 return (ctx == NULL) ? None : ctx->xid;
1566 }
1567
1568 _GLX_PUBLIC void
1569 glXFreeContextEXT(Display *dpy, GLXContext ctx)
1570 {
1571 struct glx_context *gc = (struct glx_context *) ctx;
1572
1573 if (gc == NULL || gc->xid == None)
1574 return;
1575
1576 /* The GLX_EXT_import_context spec says:
1577 *
1578 * "glXFreeContext does not free the server-side context information or
1579 * the XID associated with the server-side context."
1580 *
1581 * Don't send any protocol. Just destroy the client-side tracking of the
1582 * context. Also, only release the context structure if it's not current.
1583 */
1584 __glXLock();
1585 if (gc->currentDpy) {
1586 gc->xid = None;
1587 } else {
1588 gc->vtable->destroy(gc);
1589 }
1590 __glXUnlock();
1591 }
1592
1593 _GLX_PUBLIC GLXFBConfig *
1594 glXChooseFBConfig(Display * dpy, int screen,
1595 const int *attribList, int *nitems)
1596 {
1597 struct glx_config **config_list;
1598 int list_size;
1599
1600
1601 config_list = (struct glx_config **)
1602 glXGetFBConfigs(dpy, screen, &list_size);
1603
1604 if ((config_list != NULL) && (list_size > 0) && (attribList != NULL)) {
1605 list_size = choose_fbconfig(config_list, list_size, attribList);
1606 if (list_size == 0) {
1607 free(config_list);
1608 config_list = NULL;
1609 }
1610 }
1611
1612 *nitems = list_size;
1613 return (GLXFBConfig *) config_list;
1614 }
1615
1616
1617 _GLX_PUBLIC GLXContext
1618 glXCreateNewContext(Display * dpy, GLXFBConfig fbconfig,
1619 int renderType, GLXContext shareList, Bool allowDirect)
1620 {
1621 struct glx_config *config = (struct glx_config *) fbconfig;
1622 struct glx_config **config_list;
1623 int list_size;
1624 unsigned i;
1625
1626 if (!config) {
1627 __glXSendError(dpy, GLXBadFBConfig, 0, X_GLXCreateNewContext, false);
1628 return NULL;
1629 }
1630
1631 config_list = (struct glx_config **)
1632 glXGetFBConfigs(dpy, config->screen, &list_size);
1633
1634 for (i = 0; i < list_size; i++) {
1635 if (config_list[i] == config)
1636 break;
1637 }
1638 free(config_list);
1639
1640 if (i == list_size) {
1641 __glXSendError(dpy, GLXBadFBConfig, 0, X_GLXCreateNewContext, false);
1642 return NULL;
1643 }
1644
1645 return CreateContext(dpy, config->fbconfigID, config, shareList,
1646 allowDirect, X_GLXCreateNewContext, renderType,
1647 config->screen);
1648 }
1649
1650
1651 _GLX_PUBLIC GLXDrawable
1652 glXGetCurrentReadDrawable(void)
1653 {
1654 struct glx_context *gc = __glXGetCurrentContext();
1655
1656 return gc->currentReadable;
1657 }
1658
1659
1660 _GLX_PUBLIC GLXFBConfig *
1661 glXGetFBConfigs(Display * dpy, int screen, int *nelements)
1662 {
1663 struct glx_display *priv = __glXInitialize(dpy);
1664 struct glx_config **config_list = NULL;
1665 struct glx_config *config;
1666 unsigned num_configs = 0;
1667 int i;
1668
1669 *nelements = 0;
1670 if (priv && (priv->screens != NULL)
1671 && (screen >= 0) && (screen < ScreenCount(dpy))
1672 && (priv->screens[screen]->configs != NULL)
1673 && (priv->screens[screen]->configs->fbconfigID
1674 != (int) GLX_DONT_CARE)) {
1675
1676 for (config = priv->screens[screen]->configs; config != NULL;
1677 config = config->next) {
1678 if (config->fbconfigID != (int) GLX_DONT_CARE) {
1679 num_configs++;
1680 }
1681 }
1682
1683 config_list = malloc(num_configs * sizeof *config_list);
1684 if (config_list != NULL) {
1685 *nelements = num_configs;
1686 i = 0;
1687 for (config = priv->screens[screen]->configs; config != NULL;
1688 config = config->next) {
1689 if (config->fbconfigID != (int) GLX_DONT_CARE) {
1690 config_list[i] = config;
1691 i++;
1692 }
1693 }
1694 }
1695 }
1696
1697 return (GLXFBConfig *) config_list;
1698 }
1699
1700
1701 _GLX_PUBLIC int
1702 glXGetFBConfigAttrib(Display * dpy, GLXFBConfig fbconfig,
1703 int attribute, int *value)
1704 {
1705 struct glx_config *config = ValidateGLXFBConfig(dpy, fbconfig);
1706
1707 if (config == NULL)
1708 return GLXBadFBConfig;
1709
1710 return glx_config_get(config, attribute, value);
1711 }
1712
1713
1714 _GLX_PUBLIC XVisualInfo *
1715 glXGetVisualFromFBConfig(Display * dpy, GLXFBConfig fbconfig)
1716 {
1717 XVisualInfo visualTemplate;
1718 struct glx_config *config = (struct glx_config *) fbconfig;
1719 int count;
1720
1721 /*
1722 ** Get a list of all visuals, return if list is empty
1723 */
1724 visualTemplate.visualid = config->visualID;
1725 return XGetVisualInfo(dpy, VisualIDMask, &visualTemplate, &count);
1726 }
1727
1728 #ifndef GLX_USE_APPLEGL
1729 /*
1730 ** GLX_SGI_swap_control
1731 */
1732 static int
1733 __glXSwapIntervalSGI(int interval)
1734 {
1735 xGLXVendorPrivateReq *req;
1736 struct glx_context *gc = __glXGetCurrentContext();
1737 struct glx_screen *psc;
1738 Display *dpy;
1739 CARD32 *interval_ptr;
1740 CARD8 opcode;
1741
1742 if (gc == &dummyContext) {
1743 return GLX_BAD_CONTEXT;
1744 }
1745
1746 if (interval <= 0) {
1747 return GLX_BAD_VALUE;
1748 }
1749
1750 psc = GetGLXScreenConfigs( gc->currentDpy, gc->screen);
1751
1752 #ifdef GLX_DIRECT_RENDERING
1753 if (gc->isDirect && psc && psc->driScreen &&
1754 psc->driScreen->setSwapInterval) {
1755 __GLXDRIdrawable *pdraw =
1756 GetGLXDRIDrawable(gc->currentDpy, gc->currentDrawable);
1757 /* Simply ignore the command if the GLX drawable has been destroyed but
1758 * the context is still bound.
1759 */
1760 if (pdraw)
1761 psc->driScreen->setSwapInterval(pdraw, interval);
1762 return 0;
1763 }
1764 #endif
1765
1766 dpy = gc->currentDpy;
1767 opcode = __glXSetupForCommand(dpy);
1768 if (!opcode) {
1769 return 0;
1770 }
1771
1772 /* Send the glXSwapIntervalSGI request */
1773 LockDisplay(dpy);
1774 GetReqExtra(GLXVendorPrivate, sizeof(CARD32), req);
1775 req->reqType = opcode;
1776 req->glxCode = X_GLXVendorPrivate;
1777 req->vendorCode = X_GLXvop_SwapIntervalSGI;
1778 req->contextTag = gc->currentContextTag;
1779
1780 interval_ptr = (CARD32 *) (req + 1);
1781 *interval_ptr = interval;
1782
1783 UnlockDisplay(dpy);
1784 SyncHandle();
1785 XFlush(dpy);
1786
1787 return 0;
1788 }
1789
1790
1791 /*
1792 ** GLX_MESA_swap_control
1793 */
1794 static int
1795 __glXSwapIntervalMESA(unsigned int interval)
1796 {
1797 #ifdef GLX_DIRECT_RENDERING
1798 struct glx_context *gc = __glXGetCurrentContext();
1799
1800 if (gc != &dummyContext && gc->isDirect) {
1801 struct glx_screen *psc;
1802
1803 psc = GetGLXScreenConfigs( gc->currentDpy, gc->screen);
1804 if (psc && psc->driScreen && psc->driScreen->setSwapInterval) {
1805 __GLXDRIdrawable *pdraw =
1806 GetGLXDRIDrawable(gc->currentDpy, gc->currentDrawable);
1807
1808 /* Simply ignore the command if the GLX drawable has been destroyed but
1809 * the context is still bound.
1810 */
1811 if (!pdraw)
1812 return 0;
1813
1814 return psc->driScreen->setSwapInterval(pdraw, interval);
1815 }
1816 }
1817 #endif
1818
1819 return GLX_BAD_CONTEXT;
1820 }
1821
1822
1823 static int
1824 __glXGetSwapIntervalMESA(void)
1825 {
1826 #ifdef GLX_DIRECT_RENDERING
1827 struct glx_context *gc = __glXGetCurrentContext();
1828
1829 if (gc != &dummyContext && gc->isDirect) {
1830 struct glx_screen *psc;
1831
1832 psc = GetGLXScreenConfigs( gc->currentDpy, gc->screen);
1833 if (psc && psc->driScreen && psc->driScreen->getSwapInterval) {
1834 __GLXDRIdrawable *pdraw =
1835 GetGLXDRIDrawable(gc->currentDpy, gc->currentDrawable);
1836 if (pdraw)
1837 return psc->driScreen->getSwapInterval(pdraw);
1838 }
1839 }
1840 #endif
1841
1842 return 0;
1843 }
1844
1845
1846 /*
1847 ** GLX_SGI_video_sync
1848 */
1849 static int
1850 __glXGetVideoSyncSGI(unsigned int *count)
1851 {
1852 int64_t ust, msc, sbc;
1853 int ret;
1854 struct glx_context *gc = __glXGetCurrentContext();
1855 struct glx_screen *psc;
1856 #ifdef GLX_DIRECT_RENDERING
1857 __GLXDRIdrawable *pdraw;
1858 #endif
1859
1860 if (gc == &dummyContext)
1861 return GLX_BAD_CONTEXT;
1862
1863 #ifdef GLX_DIRECT_RENDERING
1864 if (!gc->isDirect)
1865 return GLX_BAD_CONTEXT;
1866 #endif
1867
1868 psc = GetGLXScreenConfigs(gc->currentDpy, gc->screen);
1869 #ifdef GLX_DIRECT_RENDERING
1870 pdraw = GetGLXDRIDrawable(gc->currentDpy, gc->currentDrawable);
1871 #endif
1872
1873 /* FIXME: Looking at the GLX_SGI_video_sync spec in the extension registry,
1874 * FIXME: there should be a GLX encoding for this call. I can find no
1875 * FIXME: documentation for the GLX encoding.
1876 */
1877 #ifdef GLX_DIRECT_RENDERING
1878 if (psc && psc->driScreen && psc->driScreen->getDrawableMSC) {
1879 ret = psc->driScreen->getDrawableMSC(psc, pdraw, &ust, &msc, &sbc);
1880 *count = (unsigned) msc;
1881 return (ret == True) ? 0 : GLX_BAD_CONTEXT;
1882 }
1883 #endif
1884
1885 return GLX_BAD_CONTEXT;
1886 }
1887
1888 static int
1889 __glXWaitVideoSyncSGI(int divisor, int remainder, unsigned int *count)
1890 {
1891 struct glx_context *gc = __glXGetCurrentContext();
1892 struct glx_screen *psc;
1893 #ifdef GLX_DIRECT_RENDERING
1894 __GLXDRIdrawable *pdraw;
1895 #endif
1896 int64_t ust, msc, sbc;
1897 int ret;
1898
1899 if (divisor <= 0 || remainder < 0)
1900 return GLX_BAD_VALUE;
1901
1902 if (gc == &dummyContext)
1903 return GLX_BAD_CONTEXT;
1904
1905 #ifdef GLX_DIRECT_RENDERING
1906 if (!gc->isDirect)
1907 return GLX_BAD_CONTEXT;
1908 #endif
1909
1910 psc = GetGLXScreenConfigs( gc->currentDpy, gc->screen);
1911 #ifdef GLX_DIRECT_RENDERING
1912 pdraw = GetGLXDRIDrawable(gc->currentDpy, gc->currentDrawable);
1913 #endif
1914
1915 #ifdef GLX_DIRECT_RENDERING
1916 if (psc && psc->driScreen && psc->driScreen->waitForMSC) {
1917 ret = psc->driScreen->waitForMSC(pdraw, 0, divisor, remainder, &ust, &msc,
1918 &sbc);
1919 *count = (unsigned) msc;
1920 return (ret == True) ? 0 : GLX_BAD_CONTEXT;
1921 }
1922 #endif
1923
1924 return GLX_BAD_CONTEXT;
1925 }
1926
1927 #endif /* GLX_USE_APPLEGL */
1928
1929 /*
1930 ** GLX_SGIX_fbconfig
1931 ** Many of these functions are aliased to GLX 1.3 entry points in the
1932 ** GLX_functions table.
1933 */
1934
1935 _GLX_PUBLIC
1936 GLX_ALIAS(int, glXGetFBConfigAttribSGIX,
1937 (Display * dpy, GLXFBConfigSGIX config, int attribute, int *value),
1938 (dpy, config, attribute, value), glXGetFBConfigAttrib)
1939
1940 _GLX_PUBLIC GLX_ALIAS(GLXFBConfigSGIX *, glXChooseFBConfigSGIX,
1941 (Display * dpy, int screen, int *attrib_list,
1942 int *nelements), (dpy, screen, attrib_list, nelements),
1943 glXChooseFBConfig)
1944
1945 _GLX_PUBLIC GLX_ALIAS(XVisualInfo *, glXGetVisualFromFBConfigSGIX,
1946 (Display * dpy, GLXFBConfigSGIX config),
1947 (dpy, config), glXGetVisualFromFBConfig)
1948
1949 _GLX_PUBLIC GLXPixmap
1950 glXCreateGLXPixmapWithConfigSGIX(Display * dpy,
1951 GLXFBConfigSGIX fbconfig,
1952 Pixmap pixmap)
1953 {
1954 #ifndef GLX_USE_APPLEGL
1955 xGLXVendorPrivateWithReplyReq *vpreq;
1956 xGLXCreateGLXPixmapWithConfigSGIXReq *req;
1957 GLXPixmap xid = None;
1958 CARD8 opcode;
1959 struct glx_screen *psc;
1960 #endif
1961 struct glx_config *config = (struct glx_config *) fbconfig;
1962
1963
1964 if ((dpy == NULL) || (config == NULL)) {
1965 return None;
1966 }
1967 #ifdef GLX_USE_APPLEGL
1968 if(apple_glx_pixmap_create(dpy, config->screen, pixmap, config))
1969 return None;
1970 return pixmap;
1971 #else
1972
1973 psc = GetGLXScreenConfigs(dpy, config->screen);
1974 if ((psc != NULL)
1975 && __glXExtensionBitIsEnabled(psc, SGIX_fbconfig_bit)) {
1976 opcode = __glXSetupForCommand(dpy);
1977 if (!opcode) {
1978 return None;
1979 }
1980
1981 /* Send the glXCreateGLXPixmapWithConfigSGIX request */
1982 LockDisplay(dpy);
1983 GetReqExtra(GLXVendorPrivateWithReply,
1984 sz_xGLXCreateGLXPixmapWithConfigSGIXReq -
1985 sz_xGLXVendorPrivateWithReplyReq, vpreq);
1986 req = (xGLXCreateGLXPixmapWithConfigSGIXReq *) vpreq;
1987 req->reqType = opcode;
1988 req->glxCode = X_GLXVendorPrivateWithReply;
1989 req->vendorCode = X_GLXvop_CreateGLXPixmapWithConfigSGIX;
1990 req->screen = config->screen;
1991 req->fbconfig = config->fbconfigID;
1992 req->pixmap = pixmap;
1993 req->glxpixmap = xid = XAllocID(dpy);
1994 UnlockDisplay(dpy);
1995 SyncHandle();
1996 }
1997
1998 return xid;
1999 #endif
2000 }
2001
2002 _GLX_PUBLIC GLXContext
2003 glXCreateContextWithConfigSGIX(Display * dpy,
2004 GLXFBConfigSGIX fbconfig, int renderType,
2005 GLXContext shareList, Bool allowDirect)
2006 {
2007 GLXContext gc = NULL;
2008 struct glx_config *config = (struct glx_config *) fbconfig;
2009 struct glx_screen *psc;
2010
2011
2012 if ((dpy == NULL) || (config == NULL)) {
2013 return None;
2014 }
2015
2016 psc = GetGLXScreenConfigs(dpy, config->screen);
2017 if ((psc != NULL)
2018 && __glXExtensionBitIsEnabled(psc, SGIX_fbconfig_bit)) {
2019 gc = CreateContext(dpy, config->fbconfigID, config, shareList,
2020 allowDirect,
2021 X_GLXvop_CreateContextWithConfigSGIX, renderType,
2022 config->screen);
2023 }
2024
2025 return gc;
2026 }
2027
2028
2029 _GLX_PUBLIC GLXFBConfigSGIX
2030 glXGetFBConfigFromVisualSGIX(Display * dpy, XVisualInfo * vis)
2031 {
2032 struct glx_display *priv;
2033 struct glx_screen *psc = NULL;
2034
2035 if ((GetGLXPrivScreenConfig(dpy, vis->screen, &priv, &psc) == Success)
2036 && __glXExtensionBitIsEnabled(psc, SGIX_fbconfig_bit)
2037 && (psc->configs->fbconfigID != (int) GLX_DONT_CARE)) {
2038 return (GLXFBConfigSGIX) glx_config_find_visual(psc->configs,
2039 vis->visualid);
2040 }
2041
2042 return NULL;
2043 }
2044
2045 #ifndef GLX_USE_APPLEGL
2046 /*
2047 ** GLX_SGIX_swap_group
2048 */
2049 static void
2050 __glXJoinSwapGroupSGIX(Display * dpy, GLXDrawable drawable,
2051 GLXDrawable member)
2052 {
2053 (void) dpy;
2054 (void) drawable;
2055 (void) member;
2056 }
2057
2058
2059 /*
2060 ** GLX_SGIX_swap_barrier
2061 */
2062 static void
2063 __glXBindSwapBarrierSGIX(Display * dpy, GLXDrawable drawable, int barrier)
2064 {
2065 (void) dpy;
2066 (void) drawable;
2067 (void) barrier;
2068 }
2069
2070 static Bool
2071 __glXQueryMaxSwapBarriersSGIX(Display * dpy, int screen, int *max)
2072 {
2073 (void) dpy;
2074 (void) screen;
2075 (void) max;
2076 return False;
2077 }
2078
2079
2080 /*
2081 ** GLX_OML_sync_control
2082 */
2083 static Bool
2084 __glXGetSyncValuesOML(Display * dpy, GLXDrawable drawable,
2085 int64_t * ust, int64_t * msc, int64_t * sbc)
2086 {
2087 struct glx_display * const priv = __glXInitialize(dpy);
2088 int ret;
2089 #ifdef GLX_DIRECT_RENDERING
2090 __GLXDRIdrawable *pdraw;
2091 #endif
2092 struct glx_screen *psc;
2093
2094 if (!priv)
2095 return False;
2096
2097 #ifdef GLX_DIRECT_RENDERING
2098 pdraw = GetGLXDRIDrawable(dpy, drawable);
2099 psc = pdraw ? pdraw->psc : NULL;
2100 if (pdraw && psc->driScreen->getDrawableMSC) {
2101 ret = psc->driScreen->getDrawableMSC(psc, pdraw, ust, msc, sbc);
2102 return ret;
2103 }
2104 #endif
2105
2106 return False;
2107 }
2108
2109 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
2110 _X_HIDDEN GLboolean
2111 __glxGetMscRate(struct glx_screen *psc,
2112 int32_t * numerator, int32_t * denominator)
2113 {
2114 #ifdef XF86VIDMODE
2115 XF86VidModeModeLine mode_line;
2116 int dot_clock;
2117 int i;
2118
2119 if (XF86VidModeQueryVersion(psc->dpy, &i, &i) &&
2120 XF86VidModeGetModeLine(psc->dpy, psc->scr, &dot_clock, &mode_line)) {
2121 unsigned n = dot_clock * 1000;
2122 unsigned d = mode_line.vtotal * mode_line.htotal;
2123
2124 # define V_INTERLACE 0x010
2125 # define V_DBLSCAN 0x020
2126
2127 if (mode_line.flags & V_INTERLACE)
2128 n *= 2;
2129 else if (mode_line.flags & V_DBLSCAN)
2130 d *= 2;
2131
2132 /* The OML_sync_control spec requires that if the refresh rate is a
2133 * whole number, that the returned numerator be equal to the refresh
2134 * rate and the denominator be 1.
2135 */
2136
2137 if (n % d == 0) {
2138 n /= d;
2139 d = 1;
2140 }
2141 else {
2142 static const unsigned f[] = { 13, 11, 7, 5, 3, 2, 0 };
2143
2144 /* This is a poor man's way to reduce a fraction. It's far from
2145 * perfect, but it will work well enough for this situation.
2146 */
2147
2148 for (i = 0; f[i] != 0; i++) {
2149 while (n % f[i] == 0 && d % f[i] == 0) {
2150 d /= f[i];
2151 n /= f[i];
2152 }
2153 }
2154 }
2155
2156 *numerator = n;
2157 *denominator = d;
2158
2159 return True;
2160 }
2161 else
2162 #endif
2163
2164 return False;
2165 }
2166 #endif
2167
2168 /**
2169 * Determine the refresh rate of the specified drawable and display.
2170 *
2171 * \param dpy Display whose refresh rate is to be determined.
2172 * \param drawable Drawable whose refresh rate is to be determined.
2173 * \param numerator Numerator of the refresh rate.
2174 * \param demoninator Denominator of the refresh rate.
2175 * \return If the refresh rate for the specified display and drawable could
2176 * be calculated, True is returned. Otherwise False is returned.
2177 *
2178 * \note This function is implemented entirely client-side. A lot of other
2179 * functionality is required to export GLX_OML_sync_control, so on
2180 * XFree86 this function can be called for direct-rendering contexts
2181 * when GLX_OML_sync_control appears in the client extension string.
2182 */
2183
2184 _X_HIDDEN GLboolean
2185 __glXGetMscRateOML(Display * dpy, GLXDrawable drawable,
2186 int32_t * numerator, int32_t * denominator)
2187 {
2188 #if defined( GLX_DIRECT_RENDERING ) && defined( XF86VIDMODE )
2189 __GLXDRIdrawable *draw = GetGLXDRIDrawable(dpy, drawable);
2190
2191 if (draw == NULL)
2192 return False;
2193
2194 return __glxGetMscRate(draw->psc, numerator, denominator);
2195 #else
2196 (void) dpy;
2197 (void) drawable;
2198 (void) numerator;
2199 (void) denominator;
2200 #endif
2201 return False;
2202 }
2203
2204
2205 static int64_t
2206 __glXSwapBuffersMscOML(Display * dpy, GLXDrawable drawable,
2207 int64_t target_msc, int64_t divisor, int64_t remainder)
2208 {
2209 struct glx_context *gc = __glXGetCurrentContext();
2210 #ifdef GLX_DIRECT_RENDERING
2211 __GLXDRIdrawable *pdraw = GetGLXDRIDrawable(dpy, drawable);
2212 struct glx_screen *psc = pdraw ? pdraw->psc : NULL;
2213 #endif
2214
2215 if (gc == &dummyContext) /* no GLX for this */
2216 return -1;
2217
2218 #ifdef GLX_DIRECT_RENDERING
2219 if (!pdraw || !gc->isDirect)
2220 return -1;
2221 #endif
2222
2223 /* The OML_sync_control spec says these should "generate a GLX_BAD_VALUE
2224 * error", but it also says "It [glXSwapBuffersMscOML] will return a value
2225 * of -1 if the function failed because of errors detected in the input
2226 * parameters"
2227 */
2228 if (divisor < 0 || remainder < 0 || target_msc < 0)
2229 return -1;
2230 if (divisor > 0 && remainder >= divisor)
2231 return -1;
2232
2233 if (target_msc == 0 && divisor == 0 && remainder == 0)
2234 remainder = 1;
2235
2236 #ifdef GLX_DIRECT_RENDERING
2237 if (psc->driScreen && psc->driScreen->swapBuffers)
2238 return (*psc->driScreen->swapBuffers)(pdraw, target_msc, divisor,
2239 remainder, False);
2240 #endif
2241
2242 return -1;
2243 }
2244
2245
2246 static Bool
2247 __glXWaitForMscOML(Display * dpy, GLXDrawable drawable,
2248 int64_t target_msc, int64_t divisor,
2249 int64_t remainder, int64_t * ust,
2250 int64_t * msc, int64_t * sbc)
2251 {
2252 #ifdef GLX_DIRECT_RENDERING
2253 __GLXDRIdrawable *pdraw = GetGLXDRIDrawable(dpy, drawable);
2254 struct glx_screen *psc = pdraw ? pdraw->psc : NULL;
2255 int ret;
2256 #endif
2257
2258
2259 /* The OML_sync_control spec says these should "generate a GLX_BAD_VALUE
2260 * error", but the return type in the spec is Bool.
2261 */
2262 if (divisor < 0 || remainder < 0 || target_msc < 0)
2263 return False;
2264 if (divisor > 0 && remainder >= divisor)
2265 return False;
2266
2267 #ifdef GLX_DIRECT_RENDERING
2268 if (pdraw && psc->driScreen && psc->driScreen->waitForMSC) {
2269 ret = psc->driScreen->waitForMSC(pdraw, target_msc, divisor, remainder,
2270 ust, msc, sbc);
2271 return ret;
2272 }
2273 #endif
2274
2275 return False;
2276 }
2277
2278
2279 static Bool
2280 __glXWaitForSbcOML(Display * dpy, GLXDrawable drawable,
2281 int64_t target_sbc, int64_t * ust,
2282 int64_t * msc, int64_t * sbc)
2283 {
2284 #ifdef GLX_DIRECT_RENDERING
2285 __GLXDRIdrawable *pdraw = GetGLXDRIDrawable(dpy, drawable);
2286 struct glx_screen *psc = pdraw ? pdraw->psc : NULL;
2287 int ret;
2288 #endif
2289
2290 /* The OML_sync_control spec says this should "generate a GLX_BAD_VALUE
2291 * error", but the return type in the spec is Bool.
2292 */
2293 if (target_sbc < 0)
2294 return False;
2295
2296 #ifdef GLX_DIRECT_RENDERING
2297 if (pdraw && psc->driScreen && psc->driScreen->waitForSBC) {
2298 ret = psc->driScreen->waitForSBC(pdraw, target_sbc, ust, msc, sbc);
2299 return ret;
2300 }
2301 #endif
2302
2303 return False;
2304 }
2305
2306 /*@}*/
2307
2308
2309 /**
2310 * Mesa extension stubs. These will help reduce portability problems.
2311 */
2312 /*@{*/
2313
2314 /**
2315 * Release all buffers associated with the specified GLX drawable.
2316 *
2317 * \todo
2318 * This function was intended for stand-alone Mesa. The issue there is that
2319 * the library doesn't get any notification when a window is closed. In
2320 * DRI there is a similar but slightly different issue. When GLX 1.3 is
2321 * supported, there are 3 different functions to destroy a drawable. It
2322 * should be possible to create GLX protocol (or have it determine which
2323 * protocol to use based on the type of the drawable) to have one function
2324 * do the work of 3. For the direct-rendering case, this function could
2325 * just call the driver's \c __DRIdrawableRec::destroyDrawable function.
2326 * This would reduce the frequency with which \c __driGarbageCollectDrawables
2327 * would need to be used. This really should be done as part of the new DRI
2328 * interface work.
2329 *
2330 * \sa http://oss.sgi.com/projects/ogl-sample/registry/MESA/release_buffers.txt
2331 * __driGarbageCollectDrawables
2332 * glXDestroyGLXPixmap
2333 * glXDestroyPbuffer glXDestroyPixmap glXDestroyWindow
2334 * glXDestroyGLXPbufferSGIX glXDestroyGLXVideoSourceSGIX
2335 */
2336 static Bool
2337 __glXReleaseBuffersMESA(Display * dpy, GLXDrawable d)
2338 {
2339 (void) dpy;
2340 (void) d;
2341 return False;
2342 }
2343
2344
2345 _GLX_PUBLIC GLXPixmap
2346 glXCreateGLXPixmapMESA(Display * dpy, XVisualInfo * visual,
2347 Pixmap pixmap, Colormap cmap)
2348 {
2349 (void) dpy;
2350 (void) visual;
2351 (void) pixmap;
2352 (void) cmap;
2353 return 0;
2354 }
2355
2356 /*@}*/
2357
2358
2359 /**
2360 * GLX_MESA_copy_sub_buffer
2361 */
2362 #define X_GLXvop_CopySubBufferMESA 5154 /* temporary */
2363 static void
2364 __glXCopySubBufferMESA(Display * dpy, GLXDrawable drawable,
2365 int x, int y, int width, int height)
2366 {
2367 xGLXVendorPrivateReq *req;
2368 struct glx_context *gc;
2369 GLXContextTag tag;
2370 CARD32 *drawable_ptr;
2371 INT32 *x_ptr, *y_ptr, *w_ptr, *h_ptr;
2372 CARD8 opcode;
2373
2374 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
2375 __GLXDRIdrawable *pdraw = GetGLXDRIDrawable(dpy, drawable);
2376 if (pdraw != NULL) {
2377 struct glx_screen *psc = pdraw->psc;
2378 if (psc->driScreen->copySubBuffer != NULL) {
2379 (*psc->driScreen->copySubBuffer) (pdraw, x, y, width, height, True);
2380 }
2381
2382 return;
2383 }
2384 #endif
2385
2386 opcode = __glXSetupForCommand(dpy);
2387 if (!opcode)
2388 return;
2389
2390 /*
2391 ** The calling thread may or may not have a current context. If it
2392 ** does, send the context tag so the server can do a flush.
2393 */
2394 gc = __glXGetCurrentContext();
2395 if ((gc != &dummyContext) && (dpy == gc->currentDpy) &&
2396 ((drawable == gc->currentDrawable) ||
2397 (drawable == gc->currentReadable))) {
2398 tag = gc->currentContextTag;
2399 }
2400 else {
2401 tag = 0;
2402 }
2403
2404 LockDisplay(dpy);
2405 GetReqExtra(GLXVendorPrivate, sizeof(CARD32) + sizeof(INT32) * 4, req);
2406 req->reqType = opcode;
2407 req->glxCode = X_GLXVendorPrivate;
2408 req->vendorCode = X_GLXvop_CopySubBufferMESA;
2409 req->contextTag = tag;
2410
2411 drawable_ptr = (CARD32 *) (req + 1);
2412 x_ptr = (INT32 *) (drawable_ptr + 1);
2413 y_ptr = (INT32 *) (drawable_ptr + 2);
2414 w_ptr = (INT32 *) (drawable_ptr + 3);
2415 h_ptr = (INT32 *) (drawable_ptr + 4);
2416
2417 *drawable_ptr = drawable;
2418 *x_ptr = x;
2419 *y_ptr = y;
2420 *w_ptr = width;
2421 *h_ptr = height;
2422
2423 UnlockDisplay(dpy);
2424 SyncHandle();
2425 }
2426
2427 /*@{*/
2428 static void
2429 __glXBindTexImageEXT(Display * dpy,
2430 GLXDrawable drawable, int buffer, const int *attrib_list)
2431 {
2432 struct glx_context *gc = __glXGetCurrentContext();
2433
2434 if (gc == &dummyContext || gc->vtable->bind_tex_image == NULL)
2435 return;
2436
2437 gc->vtable->bind_tex_image(dpy, drawable, buffer, attrib_list);
2438 }
2439
2440 static void
2441 __glXReleaseTexImageEXT(Display * dpy, GLXDrawable drawable, int buffer)
2442 {
2443 struct glx_context *gc = __glXGetCurrentContext();
2444
2445 if (gc == &dummyContext || gc->vtable->release_tex_image == NULL)
2446 return;
2447
2448 gc->vtable->release_tex_image(dpy, drawable, buffer);
2449 }
2450
2451 /*@}*/
2452
2453 #endif /* GLX_USE_APPLEGL */
2454
2455 /*
2456 ** glXGetProcAddress support
2457 */
2458
2459 struct name_address_pair
2460 {
2461 const char *Name;
2462 GLvoid *Address;
2463 };
2464
2465 #define GLX_FUNCTION(f) { # f, (GLvoid *) f }
2466 #define GLX_FUNCTION2(n,f) { # n, (GLvoid *) f }
2467
2468 static const struct name_address_pair GLX_functions[] = {
2469 /*** GLX_VERSION_1_0 ***/
2470 GLX_FUNCTION(glXChooseVisual),
2471 GLX_FUNCTION(glXCopyContext),
2472 GLX_FUNCTION(glXCreateContext),
2473 GLX_FUNCTION(glXCreateGLXPixmap),
2474 GLX_FUNCTION(glXDestroyContext),
2475 GLX_FUNCTION(glXDestroyGLXPixmap),
2476 GLX_FUNCTION(glXGetConfig),
2477 GLX_FUNCTION(glXGetCurrentContext),
2478 GLX_FUNCTION(glXGetCurrentDrawable),
2479 GLX_FUNCTION(glXIsDirect),
2480 GLX_FUNCTION(glXMakeCurrent),
2481 GLX_FUNCTION(glXQueryExtension),
2482 GLX_FUNCTION(glXQueryVersion),
2483 GLX_FUNCTION(glXSwapBuffers),
2484 GLX_FUNCTION(glXUseXFont),
2485 GLX_FUNCTION(glXWaitGL),
2486 GLX_FUNCTION(glXWaitX),
2487
2488 /*** GLX_VERSION_1_1 ***/
2489 GLX_FUNCTION(glXGetClientString),
2490 GLX_FUNCTION(glXQueryExtensionsString),
2491 GLX_FUNCTION(glXQueryServerString),
2492
2493 /*** GLX_VERSION_1_2 ***/
2494 GLX_FUNCTION(glXGetCurrentDisplay),
2495
2496 /*** GLX_VERSION_1_3 ***/
2497 GLX_FUNCTION(glXChooseFBConfig),
2498 GLX_FUNCTION(glXCreateNewContext),
2499 GLX_FUNCTION(glXCreatePbuffer),
2500 GLX_FUNCTION(glXCreatePixmap),
2501 GLX_FUNCTION(glXCreateWindow),
2502 GLX_FUNCTION(glXDestroyPbuffer),
2503 GLX_FUNCTION(glXDestroyPixmap),
2504 GLX_FUNCTION(glXDestroyWindow),
2505 GLX_FUNCTION(glXGetCurrentReadDrawable),
2506 GLX_FUNCTION(glXGetFBConfigAttrib),
2507 GLX_FUNCTION(glXGetFBConfigs),
2508 GLX_FUNCTION(glXGetSelectedEvent),
2509 GLX_FUNCTION(glXGetVisualFromFBConfig),
2510 GLX_FUNCTION(glXMakeContextCurrent),
2511 GLX_FUNCTION(glXQueryContext),
2512 GLX_FUNCTION(glXQueryDrawable),
2513 GLX_FUNCTION(glXSelectEvent),
2514
2515 #ifndef GLX_USE_APPLEGL
2516 /*** GLX_SGI_swap_control ***/
2517 GLX_FUNCTION2(glXSwapIntervalSGI, __glXSwapIntervalSGI),
2518
2519 /*** GLX_SGI_video_sync ***/
2520 GLX_FUNCTION2(glXGetVideoSyncSGI, __glXGetVideoSyncSGI),
2521 GLX_FUNCTION2(glXWaitVideoSyncSGI, __glXWaitVideoSyncSGI),
2522
2523 /*** GLX_SGI_make_current_read ***/
2524 GLX_FUNCTION2(glXMakeCurrentReadSGI, glXMakeContextCurrent),
2525 GLX_FUNCTION2(glXGetCurrentReadDrawableSGI, glXGetCurrentReadDrawable),
2526
2527 /*** GLX_EXT_import_context ***/
2528 GLX_FUNCTION(glXFreeContextEXT),
2529 GLX_FUNCTION(glXGetContextIDEXT),
2530 GLX_FUNCTION2(glXGetCurrentDisplayEXT, glXGetCurrentDisplay),
2531 GLX_FUNCTION(glXImportContextEXT),
2532 GLX_FUNCTION2(glXQueryContextInfoEXT, glXQueryContext),
2533 #endif
2534
2535 /*** GLX_SGIX_fbconfig ***/
2536 GLX_FUNCTION2(glXGetFBConfigAttribSGIX, glXGetFBConfigAttrib),
2537 GLX_FUNCTION2(glXChooseFBConfigSGIX, glXChooseFBConfig),
2538 GLX_FUNCTION(glXCreateGLXPixmapWithConfigSGIX),
2539 GLX_FUNCTION(glXCreateContextWithConfigSGIX),
2540 GLX_FUNCTION2(glXGetVisualFromFBConfigSGIX, glXGetVisualFromFBConfig),
2541 GLX_FUNCTION(glXGetFBConfigFromVisualSGIX),
2542
2543 #ifndef GLX_USE_APPLEGL
2544 /*** GLX_SGIX_pbuffer ***/
2545 GLX_FUNCTION(glXCreateGLXPbufferSGIX),
2546 GLX_FUNCTION(glXDestroyGLXPbufferSGIX),
2547 GLX_FUNCTION(glXQueryGLXPbufferSGIX),
2548 GLX_FUNCTION(glXSelectEventSGIX),
2549 GLX_FUNCTION(glXGetSelectedEventSGIX),
2550
2551 /*** GLX_SGIX_swap_group ***/
2552 GLX_FUNCTION2(glXJoinSwapGroupSGIX, __glXJoinSwapGroupSGIX),
2553
2554 /*** GLX_SGIX_swap_barrier ***/
2555 GLX_FUNCTION2(glXBindSwapBarrierSGIX, __glXBindSwapBarrierSGIX),
2556 GLX_FUNCTION2(glXQueryMaxSwapBarriersSGIX, __glXQueryMaxSwapBarriersSGIX),
2557
2558 /*** GLX_MESA_copy_sub_buffer ***/
2559 GLX_FUNCTION2(glXCopySubBufferMESA, __glXCopySubBufferMESA),
2560
2561 /*** GLX_MESA_pixmap_colormap ***/
2562 GLX_FUNCTION(glXCreateGLXPixmapMESA),
2563
2564 /*** GLX_MESA_release_buffers ***/
2565 GLX_FUNCTION2(glXReleaseBuffersMESA, __glXReleaseBuffersMESA),
2566
2567 /*** GLX_MESA_swap_control ***/
2568 GLX_FUNCTION2(glXSwapIntervalMESA, __glXSwapIntervalMESA),
2569 GLX_FUNCTION2(glXGetSwapIntervalMESA, __glXGetSwapIntervalMESA),
2570 #endif
2571
2572 /*** GLX_ARB_get_proc_address ***/
2573 GLX_FUNCTION(glXGetProcAddressARB),
2574
2575 /*** GLX 1.4 ***/
2576 GLX_FUNCTION2(glXGetProcAddress, glXGetProcAddressARB),
2577
2578 #ifndef GLX_USE_APPLEGL
2579 /*** GLX_OML_sync_control ***/
2580 GLX_FUNCTION2(glXWaitForSbcOML, __glXWaitForSbcOML),
2581 GLX_FUNCTION2(glXWaitForMscOML, __glXWaitForMscOML),
2582 GLX_FUNCTION2(glXSwapBuffersMscOML, __glXSwapBuffersMscOML),
2583 GLX_FUNCTION2(glXGetMscRateOML, __glXGetMscRateOML),
2584 GLX_FUNCTION2(glXGetSyncValuesOML, __glXGetSyncValuesOML),
2585
2586 /*** GLX_EXT_texture_from_pixmap ***/
2587 GLX_FUNCTION2(glXBindTexImageEXT, __glXBindTexImageEXT),
2588 GLX_FUNCTION2(glXReleaseTexImageEXT, __glXReleaseTexImageEXT),
2589 #endif
2590
2591 #if defined(GLX_DIRECT_RENDERING) && defined(GLX_USE_DRM)
2592 /*** DRI configuration ***/
2593 GLX_FUNCTION(glXGetScreenDriver),
2594 GLX_FUNCTION(glXGetDriverConfig),
2595 #endif
2596
2597 /*** GLX_ARB_create_context and GLX_ARB_create_context_profile ***/
2598 GLX_FUNCTION(glXCreateContextAttribsARB),
2599
2600 /*** GLX_MESA_query_renderer ***/
2601 GLX_FUNCTION(glXQueryRendererIntegerMESA),
2602 GLX_FUNCTION(glXQueryRendererStringMESA),
2603 GLX_FUNCTION(glXQueryCurrentRendererIntegerMESA),
2604 GLX_FUNCTION(glXQueryCurrentRendererStringMESA),
2605
2606 {NULL, NULL} /* end of list */
2607 };
2608
2609 static const GLvoid *
2610 get_glx_proc_address(const char *funcName)
2611 {
2612 GLuint i;
2613
2614 /* try static functions */
2615 for (i = 0; GLX_functions[i].Name; i++) {
2616 if (strcmp(GLX_functions[i].Name, funcName) == 0)
2617 return GLX_functions[i].Address;
2618 }
2619
2620 return NULL;
2621 }
2622
2623 /**
2624 * Get the address of a named GL function. This is the pre-GLX 1.4 name for
2625 * \c glXGetProcAddress.
2626 *
2627 * \param procName Name of a GL or GLX function.
2628 * \returns A pointer to the named function
2629 *
2630 * \sa glXGetProcAddress
2631 */
2632 _GLX_PUBLIC void (*glXGetProcAddressARB(const GLubyte * procName)) (void)
2633 {
2634 typedef void (*gl_function) (void);
2635 gl_function f;
2636
2637
2638 /* Search the table of GLX and internal functions first. If that
2639 * fails and the supplied name could be a valid core GL name, try
2640 * searching the core GL function table. This check is done to prevent
2641 * DRI based drivers from searching the core GL function table for
2642 * internal API functions.
2643 */
2644 f = (gl_function) get_glx_proc_address((const char *) procName);
2645 if ((f == NULL) && (procName[0] == 'g') && (procName[1] == 'l')
2646 && (procName[2] != 'X')) {
2647 #ifdef GLX_INDIRECT_RENDERING
2648 f = (gl_function) __indirect_get_proc_address((const char *) procName);
2649 #endif
2650 if (!f)
2651 f = (gl_function) _glapi_get_proc_address((const char *) procName);
2652 if (!f) {
2653 struct glx_context *gc = __glXGetCurrentContext();
2654
2655 if (gc != NULL && gc->vtable->get_proc_address != NULL)
2656 f = gc->vtable->get_proc_address((const char *) procName);
2657 }
2658 }
2659 return f;
2660 }
2661
2662 /**
2663 * Get the address of a named GL function. This is the GLX 1.4 name for
2664 * \c glXGetProcAddressARB.
2665 *
2666 * \param procName Name of a GL or GLX function.
2667 * \returns A pointer to the named function
2668 *
2669 * \sa glXGetProcAddressARB
2670 */
2671 _GLX_PUBLIC
2672 GLX_ALIAS(__GLXextFuncPtr, glXGetProcAddress,
2673 (const GLubyte * procName),
2674 (procName), glXGetProcAddressARB)
2675
2676 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
2677 /**
2678 * Get the unadjusted system time (UST). Currently, the UST is measured in
2679 * microseconds since Epoc. The actual resolution of the UST may vary from
2680 * system to system, and the units may vary from release to release.
2681 * Drivers should not call this function directly. They should instead use
2682 * \c glXGetProcAddress to obtain a pointer to the function.
2683 *
2684 * \param ust Location to store the 64-bit UST
2685 * \returns Zero on success or a negative errno value on failure.
2686 *
2687 * \sa glXGetProcAddress, PFNGLXGETUSTPROC
2688 *
2689 * \since Internal API version 20030317.
2690 */
2691 _X_HIDDEN int
2692 __glXGetUST(int64_t * ust)
2693 {
2694 struct timeval tv;
2695
2696 if (ust == NULL) {
2697 return -EFAULT;
2698 }
2699
2700 if (gettimeofday(&tv, NULL) == 0) {
2701 ust[0] = (tv.tv_sec * 1000000) + tv.tv_usec;
2702 return 0;
2703 }
2704 else {
2705 return -errno;
2706 }
2707 }
2708 #endif /* GLX_DIRECT_RENDERING */
2709
2710 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
2711
2712 PUBLIC int
2713 MesaGLInteropGLXQueryDeviceInfo(Display *dpy, GLXContext context,
2714 struct mesa_glinterop_device_info *out)
2715 {
2716 struct glx_context *gc = (struct glx_context*)context;
2717 int ret;
2718
2719 __glXLock();
2720
2721 if (!gc || gc->xid == None || !gc->isDirect) {
2722 __glXUnlock();
2723 return MESA_GLINTEROP_INVALID_CONTEXT;
2724 }
2725
2726 if (!gc->vtable->interop_query_device_info) {
2727 __glXUnlock();
2728 return MESA_GLINTEROP_UNSUPPORTED;
2729 }
2730
2731 ret = gc->vtable->interop_query_device_info(gc, out);
2732 __glXUnlock();
2733 return ret;
2734 }
2735
2736 PUBLIC int
2737 MesaGLInteropGLXExportObject(Display *dpy, GLXContext context,
2738 struct mesa_glinterop_export_in *in,
2739 struct mesa_glinterop_export_out *out)
2740 {
2741 struct glx_context *gc = (struct glx_context*)context;
2742 int ret;
2743
2744 __glXLock();
2745
2746 if (!gc || gc->xid == None || !gc->isDirect) {
2747 __glXUnlock();
2748 return MESA_GLINTEROP_INVALID_CONTEXT;
2749 }
2750
2751 if (!gc->vtable->interop_export_object) {
2752 __glXUnlock();
2753 return MESA_GLINTEROP_UNSUPPORTED;
2754 }
2755
2756 ret = gc->vtable->interop_export_object(gc, in, out);
2757 __glXUnlock();
2758 return ret;
2759 }
2760
2761 #endif /* defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL) */