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