2 * SGI FREE SOFTWARE LICENSE B (Version 2.0, Sept. 18, 2008)
3 * Copyright (C) 1991-2000 Silicon Graphics, Inc. All Rights Reserved.
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:
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.
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
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.
33 * Client-side GLX interface.
36 #include "glxclient.h"
38 #include "glxextensions.h"
39 #include "glcontextmodes.h"
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 #define GC_IS_DIRECT(gc) ((gc)->isDirect)
49 #include <X11/extensions/xf86vmode.h>
51 #define GC_IS_DIRECT(gc) ((gc)->driContext != NULL)
54 #define GC_IS_DIRECT(gc) (0)
58 #include <X11/Xlib-xcb.h>
63 static const char __glXGLXClientVendorName[] = "Mesa Project and SGI";
64 static const char __glXGLXClientVersion[] = "1.4";
67 /****************************************************************************/
69 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
71 static Bool windowExistsFlag;
73 windowExistsErrorHandler(Display * dpy, XErrorEvent * xerr)
77 if (xerr->error_code == BadWindow) {
78 windowExistsFlag = GL_FALSE;
84 * Find drawables in the local hash that have been destroyed on the
87 * \param dpy Display to destroy drawables for
88 * \param screen Screen number to destroy drawables for
91 GarbageCollectDRIDrawables(Display * dpy, __GLXscreenConfigs * sc)
94 __GLXDRIdrawable *pdraw;
95 XWindowAttributes xwa;
96 int (*oldXErrorHandler) (Display *, XErrorEvent *);
98 /* Set no-op error handler so Xlib doesn't bail out if the windows
99 * has alreay been destroyed on the server. */
100 XSync(dpy, GL_FALSE);
101 oldXErrorHandler = XSetErrorHandler(windowExistsErrorHandler);
103 if (__glxHashFirst(sc->drawHash, &draw, (void *) &pdraw) == 1) {
105 windowExistsFlag = GL_TRUE;
106 XGetWindowAttributes(dpy, draw, &xwa); /* dummy request */
107 if (!windowExistsFlag) {
108 /* Destroy the local drawable data, if the drawable no
109 longer exists in the Xserver */
110 (*pdraw->destroyDrawable) (pdraw);
111 __glxHashDelete(sc->drawHash, draw);
113 } while (__glxHashNext(sc->drawHash, &draw, (void *) &pdraw) == 1);
116 XSync(dpy, GL_FALSE);
117 XSetErrorHandler(oldXErrorHandler);
121 * Get the __DRIdrawable for the drawable associated with a GLXContext
123 * \param dpy The display associated with \c drawable.
124 * \param drawable GLXDrawable whose __DRIdrawable part is to be retrieved.
125 * \param scrn_num If non-NULL, the drawables screen is stored there
126 * \returns A pointer to the context's __DRIdrawable on success, or NULL if
127 * the drawable is not associated with a direct-rendering context.
129 _X_HIDDEN __GLXDRIdrawable *
130 GetGLXDRIDrawable(Display * dpy, GLXDrawable drawable, int *const scrn_num)
132 __GLXdisplayPrivate *priv = __glXInitialize(dpy);
133 __GLXDRIdrawable *pdraw;
134 const unsigned screen_count = ScreenCount(dpy);
136 __GLXscreenConfigs *psc;
141 for (i = 0; i < screen_count; i++) {
142 psc = &priv->screenConfigs[i];
143 if (psc->drawHash == NULL)
146 if (__glxHashLookup(psc->drawHash, drawable, (void *) &pdraw) == 0) {
147 if (scrn_num != NULL)
160 * Get the GLX per-screen data structure associated with a GLX context.
162 * \param dpy Display for which the GLX per-screen information is to be
164 * \param scrn Screen on \c dpy for which the GLX per-screen information is
166 * \returns A pointer to the GLX per-screen data if \c dpy and \c scrn
167 * specify a valid GLX screen, or NULL otherwise.
169 * \todo Should this function validate that \c scrn is within the screen
170 * number range for \c dpy?
173 static __GLXscreenConfigs *
174 GetGLXScreenConfigs(Display * dpy, int scrn)
176 __GLXdisplayPrivate *const priv = __glXInitialize(dpy);
179 && priv->screenConfigs !=
180 NULL) ? &priv->screenConfigs[scrn] : NULL;
185 GetGLXPrivScreenConfig(Display * dpy, int scrn, __GLXdisplayPrivate ** ppriv,
186 __GLXscreenConfigs ** ppsc)
188 /* Initialize the extension, if needed . This has the added value
189 * of initializing/allocating the display private
193 return GLX_NO_EXTENSION;
196 *ppriv = __glXInitialize(dpy);
197 if (*ppriv == NULL) {
198 return GLX_NO_EXTENSION;
201 /* Check screen number to see if its valid */
202 if ((scrn < 0) || (scrn >= ScreenCount(dpy))) {
203 return GLX_BAD_SCREEN;
206 /* Check to see if the GL is supported on this screen */
207 *ppsc = &((*ppriv)->screenConfigs[scrn]);
208 if ((*ppsc)->configs == NULL) {
209 /* No support for GL on this screen regardless of visual */
210 return GLX_BAD_VISUAL;
218 * Determine if a \c GLXFBConfig supplied by the application is valid.
220 * \param dpy Application supplied \c Display pointer.
221 * \param config Application supplied \c GLXFBConfig.
223 * \returns If the \c GLXFBConfig is valid, the a pointer to the matching
224 * \c __GLcontextModes structure is returned. Otherwise, \c NULL
227 static __GLcontextModes *
228 ValidateGLXFBConfig(Display * dpy, GLXFBConfig config)
230 __GLXdisplayPrivate *const priv = __glXInitialize(dpy);
231 const unsigned num_screens = ScreenCount(dpy);
233 const __GLcontextModes *modes;
237 for (i = 0; i < num_screens; i++) {
238 for (modes = priv->screenConfigs[i].configs; modes != NULL;
239 modes = modes->next) {
240 if (modes == (__GLcontextModes *) config) {
241 return (__GLcontextModes *) config;
252 * \todo It should be possible to move the allocate of \c client_state_private
253 * later in the function for direct-rendering contexts. Direct-rendering
254 * contexts don't need to track client state, so they don't need that memory
257 * \todo Eliminate \c __glXInitVertexArrayState. Replace it with a new
258 * function called \c __glXAllocateClientState that allocates the memory and
259 * does all the initialization (including the pixel pack / unpack).
262 AllocateGLXContext(Display * dpy)
267 __GLXattribute *state;
272 opcode = __glXSetupForCommand(dpy);
277 /* Allocate our context record */
278 gc = (GLXContext) Xmalloc(sizeof(struct __GLXcontextRec));
283 memset(gc, 0, sizeof(struct __GLXcontextRec));
285 state = Xmalloc(sizeof(struct __GLXattributeRec));
291 gc->client_state_private = state;
292 memset(gc->client_state_private, 0, sizeof(struct __GLXattributeRec));
293 state->NoDrawArraysProtocol = (getenv("LIBGL_NO_DRAWARRAYS") != NULL);
296 ** Create a temporary buffer to hold GLX rendering commands. The size
297 ** of the buffer is selected so that the maximum number of GLX rendering
298 ** commands can fit in a single X packet and still have room in the X
299 ** packet for the GLXRenderReq header.
302 bufSize = (XMaxRequestSize(dpy) * 4) - sz_xGLXRenderReq;
303 gc->buf = (GLubyte *) Xmalloc(bufSize);
305 Xfree(gc->client_state_private);
309 gc->bufSize = bufSize;
311 /* Fill in the new context */
312 gc->renderMode = GL_RENDER;
314 state->storePack.alignment = 4;
315 state->storeUnpack.alignment = 4;
317 gc->attributes.stackPointer = &gc->attributes.stack[0];
320 ** PERFORMANCE NOTE: A mode dependent fill image can speed things up.
321 ** Other code uses the fastImageUnpack bit, but it is never set
324 gc->fastImageUnpack = GL_FALSE;
325 gc->fillImage = __glFillImage;
327 gc->bufEnd = gc->buf + bufSize;
328 gc->isDirect = GL_FALSE;
331 ** Set limit register so that there will be one command per packet
336 gc->limit = gc->buf + bufSize - __GLX_BUFFER_LIMIT_SIZE;
339 gc->majorOpcode = opcode;
342 ** Constrain the maximum drawing command size allowed to be
343 ** transfered using the X_GLXRender protocol request. First
344 ** constrain by a software limit, then constrain by the protocl
347 if (bufSize > __GLX_RENDER_CMD_SIZE_LIMIT) {
348 bufSize = __GLX_RENDER_CMD_SIZE_LIMIT;
350 if (bufSize > __GLX_MAX_RENDER_CMD_SIZE) {
351 bufSize = __GLX_MAX_RENDER_CMD_SIZE;
353 gc->maxSmallRenderCommandSize = bufSize;
355 #ifdef GLX_USE_APPLEGL
356 gc->driContext = NULL;
357 gc->do_destroy = False;
365 * Create a new context. Exactly one of \c vis and \c fbconfig should be
368 * \param use_glx_1_3 For FBConfigs, should GLX 1.3 protocol or
369 * SGIX_fbconfig protocol be used?
370 * \param renderType For FBConfigs, what is the rendering type?
374 CreateContext(Display * dpy, int generic_id,
375 const __GLcontextModes * const fbconfig,
376 GLXContext shareList,
378 unsigned code, int renderType, int screen)
381 #ifdef GLX_DIRECT_RENDERING
382 #ifdef GLX_USE_APPLEGL
386 __GLXscreenConfigs *const psc = GetGLXScreenConfigs(dpy, screen);
393 if (generic_id == None)
396 gc = AllocateGLXContext(dpy);
400 #ifndef GLX_USE_APPLEGL /* TODO: darwin indirect */
401 #ifdef GLX_DIRECT_RENDERING
402 if (allowDirect && psc->driScreen) {
403 gc->driContext = psc->driScreen->createContext(psc, fbconfig, gc,
404 shareList, renderType);
405 if (gc->driContext != NULL) {
409 gc->isDirect = GL_TRUE;
416 case X_GLXCreateContext: {
417 xGLXCreateContextReq *req;
419 /* Send the glXCreateContext request */
420 GetReq(GLXCreateContext, req);
421 req->reqType = gc->majorOpcode;
422 req->glxCode = X_GLXCreateContext;
423 req->context = gc->xid = XAllocID(dpy);
424 req->visual = generic_id;
425 req->screen = screen;
426 req->shareList = shareList ? shareList->xid : None;
427 req->isDirect = GC_IS_DIRECT(gc);
431 case X_GLXCreateNewContext: {
432 xGLXCreateNewContextReq *req;
434 /* Send the glXCreateNewContext request */
435 GetReq(GLXCreateNewContext, req);
436 req->reqType = gc->majorOpcode;
437 req->glxCode = X_GLXCreateNewContext;
438 req->context = gc->xid = XAllocID(dpy);
439 req->fbconfig = generic_id;
440 req->screen = screen;
441 req->renderType = renderType;
442 req->shareList = shareList ? shareList->xid : None;
443 req->isDirect = GC_IS_DIRECT(gc);
447 case X_GLXvop_CreateContextWithConfigSGIX: {
448 xGLXVendorPrivateWithReplyReq *vpreq;
449 xGLXCreateContextWithConfigSGIXReq *req;
451 /* Send the glXCreateNewContext request */
452 GetReqExtra(GLXVendorPrivateWithReply,
453 sz_xGLXCreateContextWithConfigSGIXReq -
454 sz_xGLXVendorPrivateWithReplyReq, vpreq);
455 req = (xGLXCreateContextWithConfigSGIXReq *) vpreq;
456 req->reqType = gc->majorOpcode;
457 req->glxCode = X_GLXVendorPrivateWithReply;
458 req->vendorCode = X_GLXvop_CreateContextWithConfigSGIX;
459 req->context = gc->xid = XAllocID(dpy);
460 req->fbconfig = generic_id;
461 req->screen = screen;
462 req->renderType = renderType;
463 req->shareList = shareList ? shareList->xid : None;
464 req->isDirect = GC_IS_DIRECT(gc);
469 /* What to do here? This case is the sign of an internal error. It
470 * should never be reachable.
479 gc->imported = GL_FALSE;
480 gc->renderType = renderType;
482 /* TODO: darwin: Integrate with above to do indirect */
483 #ifdef GLX_USE_APPLEGL
484 if(apple_glx_create_context(&gc->driContext, dpy, screen, fbconfig,
485 shareList ? shareList->driContext : NULL,
486 &errorcode, &x11error)) {
487 __glXSendError(dpy, errorcode, 0, X_GLXCreateContext, x11error);
488 __glXFreeContext(gc);
492 gc->currentContextTag = -1;
494 gc->isDirect = allowDirect;
501 glXCreateContext(Display * dpy, XVisualInfo * vis,
502 GLXContext shareList, Bool allowDirect)
504 const __GLcontextModes *mode = NULL;
507 #if defined(GLX_DIRECT_RENDERING) || defined(GLX_USE_APPLEGL)
508 __GLXscreenConfigs *const psc = GetGLXScreenConfigs(dpy, vis->screen);
510 mode = _gl_context_modes_find_visual(psc->visuals, vis->visualid);
514 error.errorCode = BadValue;
515 error.resourceID = vis->visualid;
516 error.sequenceNumber = dpy->request;
517 error.type = X_Error;
518 error.majorCode = __glXSetupForCommand(dpy);
519 error.minorCode = X_GLXCreateContext;
520 _XError(dpy, &error);
524 renderType = mode->rgbMode ? GLX_RGBA_TYPE : GLX_COLOR_INDEX_TYPE;
527 return CreateContext(dpy, vis->visualid, mode, shareList, allowDirect,
528 X_GLXCreateContext, renderType, vis->screen);
532 __glXFreeContext(__GLXcontext * gc)
535 XFree((char *) gc->vendor);
537 XFree((char *) gc->renderer);
539 XFree((char *) gc->version);
541 XFree((char *) gc->extensions);
542 #ifndef GLX_USE_APPLEGL /* TODO: clientattrib */
543 __glFreeAttributeState(gc);
545 XFree((char *) gc->buf);
546 Xfree((char *) gc->client_state_private);
552 ** Destroy the named context
555 DestroyContext(Display * dpy, GLXContext gc)
557 #ifndef GLX_USE_APPLEGL /* TODO: darwin: indirect */
558 xGLXDestroyContextReq *req;
563 opcode = __glXSetupForCommand(dpy);
564 if (!opcode || !gc) {
570 imported = gc->imported;
573 if (gc->currentDpy) {
574 /* This context is bound to some thread. According to the man page,
575 * we should not actually delete the context until it's unbound.
576 * Note that we set gc->xid = None above. In MakeContextCurrent()
577 * we check for that and delete the context there.
583 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
584 /* Destroy the direct rendering context */
585 if (gc->driContext) {
586 (*gc->driContext->destroyContext) (gc->driContext, gc->psc, dpy);
587 gc->driContext = NULL;
588 GarbageCollectDRIDrawables(dpy, gc->psc);
592 __glXFreeVertexArrayState(gc);
595 #endif /* GLX_USE_APPLEGL */
597 if (gc->currentDpy) {
598 #ifdef GLX_USE_APPLEGL
600 * Set the Bool that indicates that we should destroy this GLX context
601 * when the context is no longer current.
603 gc->do_destroy = True;
605 /* Have to free later cuz it's in use now */
609 /* Destroy the handle if not current to anybody */
611 #ifdef GLX_USE_APPLEGL
613 apple_glx_destroy_context(&gc->driContext, dpy);
615 __glXFreeContext(gc);
617 #ifndef GLX_USE_APPLEGL
620 ** This dpy also created the server side part of the context.
621 ** Send the glXDestroyContext request.
624 GetReq(GLXDestroyContext, req);
625 req->reqType = opcode;
626 req->glxCode = X_GLXDestroyContext;
635 glXDestroyContext(Display * dpy, GLXContext gc)
637 DestroyContext(dpy, gc);
641 ** Return the major and minor version #s for the GLX extension
644 glXQueryVersion(Display * dpy, int *major, int *minor)
646 __GLXdisplayPrivate *priv;
648 /* Init the extension. This fetches the major and minor version. */
649 priv = __glXInitialize(dpy);
654 *major = priv->majorVersion;
656 *minor = priv->minorVersion;
661 ** Query the existance of the GLX extension
664 glXQueryExtension(Display * dpy, int *errorBase, int *eventBase)
666 int major_op, erb, evb;
669 rv = XQueryExtension(dpy, GLX_EXTENSION_NAME, &major_op, &evb, &erb);
680 ** Put a barrier in the token stream that forces the GL to finish its
681 ** work before X can proceed.
686 #ifndef GLX_USE_APPLEGL
689 GLXContext gc = __glXGetCurrentContext();
690 Display *dpy = gc->currentDpy;
695 /* Flush any pending commands out */
696 __glXFlushRenderBuffer(gc, gc->pc);
697 #ifdef GLX_USE_APPLEGL
700 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
701 if (gc->driContext) {
703 __GLXDRIdrawable *pdraw =
704 GetGLXDRIDrawable(dpy, gc->currentDrawable, &screen);
707 __GLXscreenConfigs *const psc = GetGLXScreenConfigs(dpy, screen);
709 if (psc->driScreen->waitGL != NULL)
710 (*psc->driScreen->waitGL) (pdraw);
716 /* Send the glXWaitGL request */
718 GetReq(GLXWaitGL, req);
719 req->reqType = gc->majorOpcode;
720 req->glxCode = X_GLXWaitGL;
721 req->contextTag = gc->currentContextTag;
724 #endif /* GLX_USE_APPLEGL */
728 ** Put a barrier in the token stream that forces X to finish its
729 ** work before GL can proceed.
734 #ifndef GLX_USE_APPLEGL
737 GLXContext gc = __glXGetCurrentContext();
738 Display *dpy = gc->currentDpy;
743 /* Flush any pending commands out */
744 __glXFlushRenderBuffer(gc, gc->pc);
746 #ifdef GLX_USE_APPLEGL
747 apple_glx_waitx(dpy, gc->driContext);
749 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
750 if (gc->driContext) {
752 __GLXDRIdrawable *pdraw =
753 GetGLXDRIDrawable(dpy, gc->currentDrawable, &screen);
756 __GLXscreenConfigs *const psc = GetGLXScreenConfigs(dpy, screen);
757 if (psc->driScreen->waitX != NULL)
758 (*psc->driScreen->waitX) (pdraw);
767 ** Send the glXWaitX request.
770 GetReq(GLXWaitX, req);
771 req->reqType = gc->majorOpcode;
772 req->glxCode = X_GLXWaitX;
773 req->contextTag = gc->currentContextTag;
776 #endif /* GLX_USE_APPLEGL */
780 glXUseXFont(Font font, int first, int count, int listBase)
782 #ifndef GLX_USE_APPLEGL
783 xGLXUseXFontReq *req;
785 GLXContext gc = __glXGetCurrentContext();
786 Display *dpy = gc->currentDpy;
791 /* Flush any pending commands out */
792 (void) __glXFlushRenderBuffer(gc, gc->pc);
793 #ifdef GLX_USE_APPLEGL
794 DRI_glXUseXFont(font, first, count, listBase);
796 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
797 if (gc->driContext) {
798 DRI_glXUseXFont(font, first, count, listBase);
803 /* Send the glXUseFont request */
805 GetReq(GLXUseXFont, req);
806 req->reqType = gc->majorOpcode;
807 req->glxCode = X_GLXUseXFont;
808 req->contextTag = gc->currentContextTag;
812 req->listBase = listBase;
815 #endif /* GLX_USE_APPLEGL */
818 /************************************************************************/
821 ** Copy the source context to the destination context using the
825 glXCopyContext(Display * dpy, GLXContext source,
826 GLXContext dest, unsigned long mask)
828 #ifdef GLX_USE_APPLEGL
829 GLXContext gc = __glXGetCurrentContext();
833 if(apple_glx_copy_context(gc->driContext, source->driContext, dest->driContext,
834 mask, &errorcode, &x11error)) {
835 __glXSendError(dpy, errorcode, 0, X_GLXCopyContext, x11error);
839 xGLXCopyContextReq *req;
840 GLXContext gc = __glXGetCurrentContext();
844 opcode = __glXSetupForCommand(dpy);
849 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
850 if (gc->driContext) {
851 /* NOT_DONE: This does not work yet */
856 ** If the source is the current context, send its tag so that the context
857 ** can be flushed before the copy.
859 if (source == gc && dpy == gc->currentDpy) {
860 tag = gc->currentContextTag;
866 /* Send the glXCopyContext request */
868 GetReq(GLXCopyContext, req);
869 req->reqType = opcode;
870 req->glxCode = X_GLXCopyContext;
871 req->source = source ? source->xid : None;
872 req->dest = dest ? dest->xid : None;
874 req->contextTag = tag;
877 #endif /* GLX_USE_APPLEGL */
882 * Determine if a context uses direct rendering.
884 * \param dpy Display where the context was created.
885 * \param contextID ID of the context to be tested.
887 * \returns \c GL_TRUE if the context is direct rendering or not.
890 __glXIsDirect(Display * dpy, GLXContextID contextID)
892 #ifndef GLX_USE_APPLEGL /* TODO: apple indirect */
893 return GC_IS_DIRECT(gc);
895 #if !defined(USE_XCB)
896 xGLXIsDirectReq *req;
897 xGLXIsDirectReply reply;
901 opcode = __glXSetupForCommand(dpy);
907 xcb_connection_t *c = XGetXCBConnection(dpy);
908 xcb_glx_is_direct_reply_t *reply = xcb_glx_is_direct_reply(c,
913 const Bool is_direct = reply->is_direct ? True : False;
918 /* Send the glXIsDirect request */
920 GetReq(GLXIsDirect, req);
921 req->reqType = opcode;
922 req->glxCode = X_GLXIsDirect;
923 req->context = contextID;
924 _XReply(dpy, (xReply *) & reply, 0, False);
928 return reply.isDirect;
930 #endif /* GLX_USE_APPLEGL */
935 * Shouldn't this function \b always return \c GL_FALSE when
936 * \c GLX_DIRECT_RENDERING is not defined? Do we really need to bother with
937 * the GLX protocol here at all?
940 glXIsDirect(Display * dpy, GLXContext gc)
945 else if (GC_IS_DIRECT(gc)) {
948 return __glXIsDirect(dpy, gc->xid);
952 glXCreateGLXPixmap(Display * dpy, XVisualInfo * vis, Pixmap pixmap)
954 #ifdef GLX_USE_APPLEGL
955 int screen = vis->screen;
956 __GLXscreenConfigs *const psc = GetGLXScreenConfigs(dpy, screen);
957 const __GLcontextModes *modes;
959 modes = _gl_context_modes_find_visual(psc->visuals, vis->visualid);
961 if(apple_glx_pixmap_create(dpy, vis->screen, pixmap, modes))
966 xGLXCreateGLXPixmapReq *req;
970 opcode = __glXSetupForCommand(dpy);
975 /* Send the glXCreateGLXPixmap request */
977 GetReq(GLXCreateGLXPixmap, req);
978 req->reqType = opcode;
979 req->glxCode = X_GLXCreateGLXPixmap;
980 req->screen = vis->screen;
981 req->visual = vis->visualid;
982 req->pixmap = pixmap;
983 req->glxpixmap = xid = XAllocID(dpy);
987 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
989 /* FIXME: Maybe delay __DRIdrawable creation until the drawable
990 * is actually bound to a context... */
992 __GLXdisplayPrivate *const priv = __glXInitialize(dpy);
993 __GLXDRIdrawable *pdraw;
994 __GLXscreenConfigs *psc;
995 __GLcontextModes *modes;
997 psc = &priv->screenConfigs[vis->screen];
998 if (psc->driScreen == NULL)
1000 modes = _gl_context_modes_find_visual(psc->visuals, vis->visualid);
1001 pdraw = psc->driScreen->createDrawable(psc, pixmap, req->glxpixmap, modes);
1002 if (pdraw == NULL) {
1003 fprintf(stderr, "failed to create pixmap\n");
1007 if (__glxHashInsert(psc->drawHash, req->glxpixmap, pdraw)) {
1008 (*pdraw->destroyDrawable) (pdraw);
1009 return None; /* FIXME: Check what we're supposed to do here... */
1019 ** Destroy the named pixmap
1022 glXDestroyGLXPixmap(Display * dpy, GLXPixmap glxpixmap)
1024 #ifdef GLX_USE_APPLEGL
1025 if(apple_glx_pixmap_destroy(dpy, glxpixmap))
1026 __glXSendError(dpy, GLXBadPixmap, glxpixmap, X_GLXDestroyPixmap, false);
1028 xGLXDestroyGLXPixmapReq *req;
1031 opcode = __glXSetupForCommand(dpy);
1036 /* Send the glXDestroyGLXPixmap request */
1038 GetReq(GLXDestroyGLXPixmap, req);
1039 req->reqType = opcode;
1040 req->glxCode = X_GLXDestroyGLXPixmap;
1041 req->glxpixmap = glxpixmap;
1045 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
1048 __GLXdisplayPrivate *const priv = __glXInitialize(dpy);
1049 __GLXDRIdrawable *pdraw = GetGLXDRIDrawable(dpy, glxpixmap, &screen);
1050 __GLXscreenConfigs *psc = &priv->screenConfigs[screen];
1052 if (pdraw != NULL) {
1053 (*pdraw->destroyDrawable) (pdraw);
1054 __glxHashDelete(psc->drawHash, glxpixmap);
1058 #endif /* GLX_USE_APPLEGL */
1062 glXSwapBuffers(Display * dpy, GLXDrawable drawable)
1064 #ifdef GLX_USE_APPLEGL
1065 GLXContext gc = glXGetCurrentContext();
1066 if(gc && apple_glx_is_current_drawable(dpy, gc->driContext, drawable)) {
1067 apple_glx_swap_buffers(gc->driContext);
1069 __glXSendError(dpy, GLXBadCurrentWindow, 0, X_GLXSwapBuffers, false);
1076 xcb_connection_t *c;
1078 xGLXSwapBuffersReq *req;
1081 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
1082 __GLXDRIdrawable *pdraw = GetGLXDRIDrawable(dpy, drawable, NULL);
1084 if (pdraw != NULL) {
1086 (*pdraw->psc->driScreen->swapBuffers)(pdraw, 0, 0, 0);
1091 opcode = __glXSetupForCommand(dpy);
1097 ** The calling thread may or may not have a current context. If it
1098 ** does, send the context tag so the server can do a flush.
1100 gc = __glXGetCurrentContext();
1101 if ((gc != NULL) && (dpy == gc->currentDpy) &&
1102 ((drawable == gc->currentDrawable)
1103 || (drawable == gc->currentReadable))) {
1104 tag = gc->currentContextTag;
1111 c = XGetXCBConnection(dpy);
1112 xcb_glx_swap_buffers(c, tag, drawable);
1115 /* Send the glXSwapBuffers request */
1117 GetReq(GLXSwapBuffers, req);
1118 req->reqType = opcode;
1119 req->glxCode = X_GLXSwapBuffers;
1120 req->drawable = drawable;
1121 req->contextTag = tag;
1125 #endif /* USE_XCB */
1126 #endif /* GLX_USE_APPLEGL */
1131 ** Return configuration information for the given display, screen and
1132 ** visual combination.
1135 glXGetConfig(Display * dpy, XVisualInfo * vis, int attribute,
1138 __GLXdisplayPrivate *priv;
1139 __GLXscreenConfigs *psc;
1140 __GLcontextModes *modes;
1143 status = GetGLXPrivScreenConfig(dpy, vis->screen, &priv, &psc);
1144 if (status == Success) {
1145 modes = _gl_context_modes_find_visual(psc->visuals, vis->visualid);
1147 /* Lookup attribute after first finding a match on the visual */
1148 if (modes != NULL) {
1149 return _gl_get_context_mode_data(modes, attribute, value_return);
1152 status = GLX_BAD_VISUAL;
1156 ** If we can't find the config for this visual, this visual is not
1157 ** supported by the OpenGL implementation on the server.
1159 if ((status == GLX_BAD_VISUAL) && (attribute == GLX_USE_GL)) {
1160 *value_return = GL_FALSE;
1167 /************************************************************************/
1170 init_fbconfig_for_chooser(__GLcontextModes * config,
1171 GLboolean fbconfig_style_tags)
1173 memset(config, 0, sizeof(__GLcontextModes));
1174 config->visualID = (XID) GLX_DONT_CARE;
1175 config->visualType = GLX_DONT_CARE;
1177 /* glXChooseFBConfig specifies different defaults for these two than
1180 if (fbconfig_style_tags) {
1181 config->rgbMode = GL_TRUE;
1182 config->doubleBufferMode = GLX_DONT_CARE;
1185 config->visualRating = GLX_DONT_CARE;
1186 config->transparentPixel = GLX_NONE;
1187 config->transparentRed = GLX_DONT_CARE;
1188 config->transparentGreen = GLX_DONT_CARE;
1189 config->transparentBlue = GLX_DONT_CARE;
1190 config->transparentAlpha = GLX_DONT_CARE;
1191 config->transparentIndex = GLX_DONT_CARE;
1193 config->drawableType = GLX_WINDOW_BIT;
1194 config->renderType =
1195 (config->rgbMode) ? GLX_RGBA_BIT : GLX_COLOR_INDEX_BIT;
1196 config->xRenderable = GLX_DONT_CARE;
1197 config->fbconfigID = (GLXFBConfigID) (GLX_DONT_CARE);
1199 config->swapMethod = GLX_DONT_CARE;
1202 #define MATCH_DONT_CARE( param ) \
1204 if ( ((int) a-> param != (int) GLX_DONT_CARE) \
1205 && (a-> param != b-> param) ) { \
1210 #define MATCH_MINIMUM( param ) \
1212 if ( ((int) a-> param != (int) GLX_DONT_CARE) \
1213 && (a-> param > b-> param) ) { \
1218 #define MATCH_EXACT( param ) \
1220 if ( a-> param != b-> param) { \
1225 /* Test that all bits from a are contained in b */
1226 #define MATCH_MASK(param) \
1228 if ((a->param & ~b->param) != 0) \
1233 * Determine if two GLXFBConfigs are compatible.
1235 * \param a Application specified config to test.
1236 * \param b Server specified config to test against \c a.
1239 fbconfigs_compatible(const __GLcontextModes * const a,
1240 const __GLcontextModes * const b)
1242 MATCH_DONT_CARE(doubleBufferMode);
1243 MATCH_DONT_CARE(visualType);
1244 MATCH_DONT_CARE(visualRating);
1245 MATCH_DONT_CARE(xRenderable);
1246 MATCH_DONT_CARE(fbconfigID);
1247 MATCH_DONT_CARE(swapMethod);
1249 MATCH_MINIMUM(rgbBits);
1250 MATCH_MINIMUM(numAuxBuffers);
1251 MATCH_MINIMUM(redBits);
1252 MATCH_MINIMUM(greenBits);
1253 MATCH_MINIMUM(blueBits);
1254 MATCH_MINIMUM(alphaBits);
1255 MATCH_MINIMUM(depthBits);
1256 MATCH_MINIMUM(stencilBits);
1257 MATCH_MINIMUM(accumRedBits);
1258 MATCH_MINIMUM(accumGreenBits);
1259 MATCH_MINIMUM(accumBlueBits);
1260 MATCH_MINIMUM(accumAlphaBits);
1261 MATCH_MINIMUM(sampleBuffers);
1262 MATCH_MINIMUM(maxPbufferWidth);
1263 MATCH_MINIMUM(maxPbufferHeight);
1264 MATCH_MINIMUM(maxPbufferPixels);
1265 MATCH_MINIMUM(samples);
1267 MATCH_DONT_CARE(stereoMode);
1270 MATCH_MASK(drawableType);
1271 MATCH_MASK(renderType);
1273 /* There is a bug in a few of the XFree86 DDX drivers. They contain
1274 * visuals with a "transparent type" of 0 when they really mean GLX_NONE.
1275 * Technically speaking, it is a bug in the DDX driver, but there is
1276 * enough of an installed base to work around the problem here. In any
1277 * case, 0 is not a valid value of the transparent type, so we'll treat 0
1278 * from the app as GLX_DONT_CARE. We'll consider GLX_NONE from the app and
1279 * 0 from the server to be a match to maintain backward compatibility with
1280 * the (broken) drivers.
1283 if (a->transparentPixel != (int) GLX_DONT_CARE && a->transparentPixel != 0) {
1284 if (a->transparentPixel == GLX_NONE) {
1285 if (b->transparentPixel != GLX_NONE && b->transparentPixel != 0)
1289 MATCH_EXACT(transparentPixel);
1292 switch (a->transparentPixel) {
1293 case GLX_TRANSPARENT_RGB:
1294 MATCH_DONT_CARE(transparentRed);
1295 MATCH_DONT_CARE(transparentGreen);
1296 MATCH_DONT_CARE(transparentBlue);
1297 MATCH_DONT_CARE(transparentAlpha);
1300 case GLX_TRANSPARENT_INDEX:
1301 MATCH_DONT_CARE(transparentIndex);
1313 /* There's some trickly language in the GLX spec about how this is supposed
1314 * to work. Basically, if a given component size is either not specified
1315 * or the requested size is zero, it is supposed to act like PERFER_SMALLER.
1316 * Well, that's really hard to do with the code as-is. This behavior is
1317 * closer to correct, but still not technically right.
1319 #define PREFER_LARGER_OR_ZERO(comp) \
1321 if ( ((*a)-> comp) != ((*b)-> comp) ) { \
1322 if ( ((*a)-> comp) == 0 ) { \
1325 else if ( ((*b)-> comp) == 0 ) { \
1329 return ((*b)-> comp) - ((*a)-> comp) ; \
1334 #define PREFER_LARGER(comp) \
1336 if ( ((*a)-> comp) != ((*b)-> comp) ) { \
1337 return ((*b)-> comp) - ((*a)-> comp) ; \
1341 #define PREFER_SMALLER(comp) \
1343 if ( ((*a)-> comp) != ((*b)-> comp) ) { \
1344 return ((*a)-> comp) - ((*b)-> comp) ; \
1349 * Compare two GLXFBConfigs. This function is intended to be used as the
1350 * compare function passed in to qsort.
1352 * \returns If \c a is a "better" config, according to the specification of
1353 * SGIX_fbconfig, a number less than zero is returned. If \c b is
1354 * better, then a number greater than zero is return. If both are
1355 * equal, zero is returned.
1356 * \sa qsort, glXChooseVisual, glXChooseFBConfig, glXChooseFBConfigSGIX
1359 fbconfig_compare(const __GLcontextModes * const *const a,
1360 const __GLcontextModes * const *const b)
1362 /* The order of these comparisons must NOT change. It is defined by
1363 * the GLX 1.3 spec and ARB_multisample.
1366 PREFER_SMALLER(visualSelectGroup);
1368 /* The sort order for the visualRating is GLX_NONE, GLX_SLOW, and
1369 * GLX_NON_CONFORMANT_CONFIG. It just so happens that this is the
1370 * numerical sort order of the enums (0x8000, 0x8001, and 0x800D).
1372 PREFER_SMALLER(visualRating);
1374 /* This isn't quite right. It is supposed to compare the sum of the
1375 * components the user specifically set minimums for.
1377 PREFER_LARGER_OR_ZERO(redBits);
1378 PREFER_LARGER_OR_ZERO(greenBits);
1379 PREFER_LARGER_OR_ZERO(blueBits);
1380 PREFER_LARGER_OR_ZERO(alphaBits);
1382 PREFER_SMALLER(rgbBits);
1384 if (((*a)->doubleBufferMode != (*b)->doubleBufferMode)) {
1385 /* Prefer single-buffer.
1387 return (!(*a)->doubleBufferMode) ? -1 : 1;
1390 PREFER_SMALLER(numAuxBuffers);
1392 PREFER_LARGER_OR_ZERO(depthBits);
1393 PREFER_SMALLER(stencilBits);
1395 /* This isn't quite right. It is supposed to compare the sum of the
1396 * components the user specifically set minimums for.
1398 PREFER_LARGER_OR_ZERO(accumRedBits);
1399 PREFER_LARGER_OR_ZERO(accumGreenBits);
1400 PREFER_LARGER_OR_ZERO(accumBlueBits);
1401 PREFER_LARGER_OR_ZERO(accumAlphaBits);
1403 PREFER_SMALLER(visualType);
1405 /* None of the multisample specs say where this comparison should happen,
1406 * so I put it near the end.
1408 PREFER_SMALLER(sampleBuffers);
1409 PREFER_SMALLER(samples);
1411 /* None of the pbuffer or fbconfig specs say that this comparison needs
1412 * to happen at all, but it seems like it should.
1414 PREFER_LARGER(maxPbufferWidth);
1415 PREFER_LARGER(maxPbufferHeight);
1416 PREFER_LARGER(maxPbufferPixels);
1423 * Selects and sorts a subset of the supplied configs based on the attributes.
1424 * This function forms to basis of \c glXChooseVisual, \c glXChooseFBConfig,
1425 * and \c glXChooseFBConfigSGIX.
1427 * \param configs Array of pointers to possible configs. The elements of
1428 * this array that do not meet the criteria will be set to
1429 * NULL. The remaining elements will be sorted according to
1430 * the various visual / FBConfig selection rules.
1431 * \param num_configs Number of elements in the \c configs array.
1432 * \param attribList Attributes used select from \c configs. This array is
1433 * terminated by a \c None tag. The array can either take
1434 * the form expected by \c glXChooseVisual (where boolean
1435 * tags do not have a value) or by \c glXChooseFBConfig
1436 * (where every tag has a value).
1437 * \param fbconfig_style_tags Selects whether \c attribList is in
1438 * \c glXChooseVisual style or
1439 * \c glXChooseFBConfig style.
1440 * \returns The number of valid elements left in \c configs.
1442 * \sa glXChooseVisual, glXChooseFBConfig, glXChooseFBConfigSGIX
1445 choose_visual(__GLcontextModes ** configs, int num_configs,
1446 const int *attribList, GLboolean fbconfig_style_tags)
1448 __GLcontextModes test_config;
1452 /* This is a fairly direct implementation of the selection method
1453 * described by GLX_SGIX_fbconfig. Start by culling out all the
1454 * configs that are not compatible with the selected parameter
1458 init_fbconfig_for_chooser(&test_config, fbconfig_style_tags);
1459 __glXInitializeVisualConfigFromTags(&test_config, 512,
1460 (const INT32 *) attribList,
1461 GL_TRUE, fbconfig_style_tags);
1464 for (i = 0; i < num_configs; i++) {
1465 if (fbconfigs_compatible(&test_config, configs[i])) {
1466 configs[base] = configs[i];
1475 if (base < num_configs) {
1476 (void) memset(&configs[base], 0, sizeof(void *) * (num_configs - base));
1479 /* After the incompatible configs are removed, the resulting
1480 * list is sorted according to the rules set out in the various
1484 qsort(configs, base, sizeof(__GLcontextModes *),
1485 (int (*)(const void *, const void *)) fbconfig_compare);
1493 ** Return the visual that best matches the template. Return None if no
1494 ** visual matches the template.
1496 PUBLIC XVisualInfo *
1497 glXChooseVisual(Display * dpy, int screen, int *attribList)
1499 XVisualInfo *visualList = NULL;
1500 __GLXdisplayPrivate *priv;
1501 __GLXscreenConfigs *psc;
1502 __GLcontextModes test_config;
1503 __GLcontextModes *modes;
1504 const __GLcontextModes *best_config = NULL;
1507 ** Get a list of all visuals, return if list is empty
1509 if (GetGLXPrivScreenConfig(dpy, screen, &priv, &psc) != Success) {
1515 ** Build a template from the defaults and the attribute list
1516 ** Free visual list and return if an unexpected token is encountered
1518 init_fbconfig_for_chooser(&test_config, GL_FALSE);
1519 __glXInitializeVisualConfigFromTags(&test_config, 512,
1520 (const INT32 *) attribList,
1524 ** Eliminate visuals that don't meet minimum requirements
1525 ** Compute a score for those that do
1526 ** Remember which visual, if any, got the highest score
1527 ** If no visual is acceptable, return None
1528 ** Otherwise, create an XVisualInfo list with just the selected X visual
1531 for (modes = psc->visuals; modes != NULL; modes = modes->next) {
1532 if (fbconfigs_compatible(&test_config, modes)
1533 && ((best_config == NULL)
1536 ((const __GLcontextModes * const *const) &modes,
1537 &best_config) < 0))) {
1538 XVisualInfo visualTemplate;
1539 XVisualInfo *newList;
1542 visualTemplate.screen = screen;
1543 visualTemplate.visualid = modes->visualID;
1544 newList = XGetVisualInfo(dpy, VisualScreenMask | VisualIDMask,
1545 &visualTemplate, &i);
1549 visualList = newList;
1550 best_config = modes;
1555 #ifdef GLX_USE_APPLEGL
1556 if(visualList && getenv("LIBGL_DUMP_VISUALID")) {
1557 printf("visualid 0x%lx\n", visualList[0].visualid);
1566 glXQueryExtensionsString(Display * dpy, int screen)
1568 __GLXscreenConfigs *psc;
1569 __GLXdisplayPrivate *priv;
1571 if (GetGLXPrivScreenConfig(dpy, screen, &priv, &psc) != Success) {
1575 if (!psc->effectiveGLXexts) {
1576 if (!psc->serverGLXexts) {
1577 psc->serverGLXexts =
1578 __glXQueryServerString(dpy, priv->majorOpcode, screen,
1582 __glXCalculateUsableExtensions(psc,
1583 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
1584 (psc->driScreen != NULL),
1588 priv->minorVersion);
1591 return psc->effectiveGLXexts;
1595 glXGetClientString(Display * dpy, int name)
1601 return (__glXGLXClientVendorName);
1603 return (__glXGLXClientVersion);
1604 case GLX_EXTENSIONS:
1605 return (__glXGetClientExtensions());
1612 glXQueryServerString(Display * dpy, int screen, int name)
1614 __GLXscreenConfigs *psc;
1615 __GLXdisplayPrivate *priv;
1619 if (GetGLXPrivScreenConfig(dpy, screen, &priv, &psc) != Success) {
1625 str = &priv->serverGLXvendor;
1628 str = &priv->serverGLXversion;
1630 case GLX_EXTENSIONS:
1631 str = &psc->serverGLXexts;
1638 *str = __glXQueryServerString(dpy, priv->majorOpcode, screen, name);
1645 __glXClientInfo(Display * dpy, int opcode)
1647 char *ext_str = __glXGetClientGLExtensionString();
1648 int size = strlen(ext_str) + 1;
1651 xcb_connection_t *c = XGetXCBConnection(dpy);
1652 xcb_glx_client_info(c,
1653 GLX_MAJOR_VERSION, GLX_MINOR_VERSION, size, ext_str);
1655 xGLXClientInfoReq *req;
1657 /* Send the glXClientInfo request */
1659 GetReq(GLXClientInfo, req);
1660 req->reqType = opcode;
1661 req->glxCode = X_GLXClientInfo;
1662 req->major = GLX_MAJOR_VERSION;
1663 req->minor = GLX_MINOR_VERSION;
1665 req->length += (size + 3) >> 2;
1666 req->numbytes = size;
1667 Data(dpy, ext_str, size);
1671 #endif /* USE_XCB */
1678 ** EXT_import_context
1682 glXGetCurrentDisplay(void)
1684 GLXContext gc = __glXGetCurrentContext();
1687 return gc->currentDpy;
1691 GLX_ALIAS(Display *, glXGetCurrentDisplayEXT, (void), (),
1692 glXGetCurrentDisplay)
1694 #ifndef GLX_USE_APPLEGL
1696 * Used internally by libGL to send \c xGLXQueryContextinfoExtReq requests
1699 * \param dpy Display where \c ctx was created.
1700 * \param ctx Context to query.
1701 * \returns \c Success on success. \c GLX_BAD_CONTEXT if \c ctx is invalid,
1702 * or zero if the request failed due to internal problems (i.e.,
1703 * unable to allocate temporary memory, etc.)
1706 * This function dynamically determines whether to use the EXT_import_context
1707 * version of the protocol or the GLX 1.3 version of the protocol.
1709 static int __glXQueryContextInfo(Display * dpy, GLXContext ctx)
1711 __GLXdisplayPrivate *priv = __glXInitialize(dpy);
1712 xGLXQueryContextReply reply;
1718 return GLX_BAD_CONTEXT;
1720 opcode = __glXSetupForCommand(dpy);
1725 /* Send the glXQueryContextInfoEXT request */
1728 if ((priv->majorVersion > 1) || (priv->minorVersion >= 3)) {
1729 xGLXQueryContextReq *req;
1731 GetReq(GLXQueryContext, req);
1733 req->reqType = opcode;
1734 req->glxCode = X_GLXQueryContext;
1735 req->context = (unsigned int) (ctx->xid);
1738 xGLXVendorPrivateReq *vpreq;
1739 xGLXQueryContextInfoEXTReq *req;
1741 GetReqExtra(GLXVendorPrivate,
1742 sz_xGLXQueryContextInfoEXTReq - sz_xGLXVendorPrivateReq,
1744 req = (xGLXQueryContextInfoEXTReq *) vpreq;
1745 req->reqType = opcode;
1746 req->glxCode = X_GLXVendorPrivateWithReply;
1747 req->vendorCode = X_GLXvop_QueryContextInfoEXT;
1748 req->context = (unsigned int) (ctx->xid);
1751 _XReply(dpy, (xReply *) & reply, 0, False);
1753 numValues = reply.n;
1756 else if (numValues > __GLX_MAX_CONTEXT_PROPS)
1759 int *propList, *pProp;
1762 nPropListBytes = numValues << 3;
1763 propList = (int *) Xmalloc(nPropListBytes);
1764 if (NULL == propList) {
1770 _XRead(dpy, (char *) propList, nPropListBytes);
1772 for (i = 0; i < numValues; i++) {
1774 case GLX_SHARE_CONTEXT_EXT:
1775 ctx->share_xid = *pProp++;
1777 case GLX_VISUAL_ID_EXT:
1779 _gl_context_modes_find_visual(ctx->psc->visuals, *pProp++);
1782 ctx->screen = *pProp++;
1784 case GLX_FBCONFIG_ID:
1786 _gl_context_modes_find_fbconfig(ctx->psc->configs,
1789 case GLX_RENDER_TYPE:
1790 ctx->renderType = *pProp++;
1797 Xfree((char *) propList);
1809 glXQueryContext(Display * dpy, GLXContext ctx, int attribute, int *value)
1811 #ifndef GLX_USE_APPLEGL
1814 /* get the information from the server if we don't have it already */
1815 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
1816 if (!ctx->driContext && (ctx->mode == NULL)) {
1818 if (ctx->mode == NULL) {
1820 retVal = __glXQueryContextInfo(dpy, ctx);
1821 if (Success != retVal)
1826 switch (attribute) {
1827 #ifndef GLX_USE_APPLEGL
1828 case GLX_SHARE_CONTEXT_EXT:
1829 *value = (int) (ctx->share_xid);
1831 case GLX_VISUAL_ID_EXT:
1832 *value = ctx->mode ? ctx->mode->visualID : None;
1836 *value = (int) (ctx->screen);
1838 case GLX_FBCONFIG_ID:
1839 *value = ctx->mode ? ctx->mode->fbconfigID : None;
1841 case GLX_RENDER_TYPE:
1842 *value = (int) (ctx->renderType);
1845 return GLX_BAD_ATTRIBUTE;
1851 GLX_ALIAS(int, glXQueryContextInfoEXT,
1852 (Display * dpy, GLXContext ctx, int attribute, int *value),
1853 (dpy, ctx, attribute, value), glXQueryContext)
1855 PUBLIC GLXContextID glXGetContextIDEXT(const GLXContext ctx)
1861 glXImportContextEXT(Display * dpy, GLXContextID contextID)
1863 #ifdef GLX_USE_APPLEGL
1868 if (contextID == None) {
1871 if (__glXIsDirect(dpy, contextID)) {
1875 ctx = AllocateGLXContext(dpy);
1877 ctx->xid = contextID;
1878 ctx->imported = GL_TRUE;
1880 if (Success != __glXQueryContextInfo(dpy, ctx)) {
1881 __glXFreeContext(ctx);
1890 glXFreeContextEXT(Display * dpy, GLXContext ctx)
1892 DestroyContext(dpy, ctx);
1898 * GLX 1.3 functions - these are just stubs for now!
1901 PUBLIC GLXFBConfig *
1902 glXChooseFBConfig(Display * dpy, int screen,
1903 const int *attribList, int *nitems)
1905 __GLcontextModes **config_list;
1909 config_list = (__GLcontextModes **)
1910 glXGetFBConfigs(dpy, screen, &list_size);
1912 if ((config_list != NULL) && (list_size > 0) && (attribList != NULL)) {
1913 list_size = choose_visual(config_list, list_size, attribList, GL_TRUE);
1914 if (list_size == 0) {
1920 *nitems = list_size;
1921 return (GLXFBConfig *) config_list;
1926 glXCreateNewContext(Display * dpy, GLXFBConfig config,
1927 int renderType, GLXContext shareList, Bool allowDirect)
1929 const __GLcontextModes *const fbconfig =
1930 (const __GLcontextModes *const) config;
1932 return CreateContext(dpy, fbconfig->fbconfigID, fbconfig, shareList,
1933 allowDirect, X_GLXCreateNewContext, renderType,
1939 glXGetCurrentReadDrawable(void)
1941 GLXContext gc = __glXGetCurrentContext();
1942 return gc->currentReadable;
1946 PUBLIC GLXFBConfig *
1947 glXGetFBConfigs(Display * dpy, int screen, int *nelements)
1949 __GLXdisplayPrivate *priv = __glXInitialize(dpy);
1950 __GLcontextModes **config = NULL;
1954 if (priv && (priv->screenConfigs != NULL)
1955 && (screen >= 0) && (screen <= ScreenCount(dpy))
1956 && (priv->screenConfigs[screen].configs != NULL)
1957 && (priv->screenConfigs[screen].configs->fbconfigID
1958 != (int) GLX_DONT_CARE)) {
1959 unsigned num_configs = 0;
1960 __GLcontextModes *modes;
1963 for (modes = priv->screenConfigs[screen].configs; modes != NULL;
1964 modes = modes->next) {
1965 if (modes->fbconfigID != (int) GLX_DONT_CARE) {
1970 config = (__GLcontextModes **) Xmalloc(sizeof(__GLcontextModes *)
1972 if (config != NULL) {
1973 *nelements = num_configs;
1975 for (modes = priv->screenConfigs[screen].configs; modes != NULL;
1976 modes = modes->next) {
1977 if (modes->fbconfigID != (int) GLX_DONT_CARE) {
1984 return (GLXFBConfig *) config;
1989 glXGetFBConfigAttrib(Display * dpy, GLXFBConfig config,
1990 int attribute, int *value)
1992 __GLcontextModes *const modes = ValidateGLXFBConfig(dpy, config);
1994 return (modes != NULL)
1995 ? _gl_get_context_mode_data(modes, attribute, value)
2000 PUBLIC XVisualInfo *
2001 glXGetVisualFromFBConfig(Display * dpy, GLXFBConfig config)
2003 XVisualInfo visualTemplate;
2004 __GLcontextModes *fbconfig = (__GLcontextModes *) config;
2008 ** Get a list of all visuals, return if list is empty
2010 visualTemplate.visualid = fbconfig->visualID;
2011 return XGetVisualInfo(dpy, VisualIDMask, &visualTemplate, &count);
2014 #ifndef GLX_USE_APPLEGL
2016 ** GLX_SGI_swap_control
2019 __glXSwapIntervalSGI(int interval)
2021 xGLXVendorPrivateReq *req;
2022 GLXContext gc = __glXGetCurrentContext();
2023 __GLXscreenConfigs *psc;
2025 CARD32 *interval_ptr;
2029 return GLX_BAD_CONTEXT;
2032 if (interval <= 0) {
2033 return GLX_BAD_VALUE;
2036 #ifdef __DRI_SWAP_CONTROL
2037 if (gc->driContext) {
2038 __GLXscreenConfigs * const psc = GetGLXScreenConfigs( gc->currentDpy,
2040 __GLXDRIdrawable *pdraw = GetGLXDRIDrawable(gc->currentDpy,
2041 gc->currentDrawable,
2043 if (psc->swapControl != NULL && pdraw != NULL) {
2044 psc->swapControl->setSwapInterval(pdraw->driDrawable, interval);
2047 else if (pdraw == NULL) {
2048 return GLX_BAD_CONTEXT;
2052 psc = GetGLXScreenConfigs( gc->currentDpy, gc->screen);
2054 #ifdef GLX_DIRECT_RENDERING
2055 if (gc->driContext && psc->driScreen && psc->driScreen->setSwapInterval) {
2056 __GLXDRIdrawable *pdraw = GetGLXDRIDrawable(gc->currentDpy,
2057 gc->currentDrawable,
2059 psc->driScreen->setSwapInterval(pdraw, interval);
2064 dpy = gc->currentDpy;
2065 opcode = __glXSetupForCommand(dpy);
2070 /* Send the glXSwapIntervalSGI request */
2072 GetReqExtra(GLXVendorPrivate, sizeof(CARD32), req);
2073 req->reqType = opcode;
2074 req->glxCode = X_GLXVendorPrivate;
2075 req->vendorCode = X_GLXvop_SwapIntervalSGI;
2076 req->contextTag = gc->currentContextTag;
2078 interval_ptr = (CARD32 *) (req + 1);
2079 *interval_ptr = interval;
2090 ** GLX_MESA_swap_control
2093 __glXSwapIntervalMESA(unsigned int interval)
2095 GLXContext gc = __glXGetCurrentContext();
2097 #ifdef __DRI_SWAP_CONTROL
2098 if (gc != NULL && gc->driContext) {
2099 __GLXscreenConfigs *const psc = GetGLXScreenConfigs(gc->currentDpy,
2102 if ((psc != NULL) && (psc->driScreen != NULL)) {
2103 __GLXDRIdrawable *pdraw =
2104 GetGLXDRIDrawable(gc->currentDpy, gc->currentDrawable, NULL);
2105 if (psc->swapControl != NULL && pdraw != NULL) {
2106 psc->swapControl->setSwapInterval(pdraw->driDrawable, interval);
2113 #ifdef GLX_DIRECT_RENDERING
2114 if (gc != NULL && gc->driContext) {
2115 __GLXscreenConfigs *psc;
2117 psc = GetGLXScreenConfigs( gc->currentDpy, gc->screen);
2118 if (psc->driScreen && psc->driScreen->setSwapInterval) {
2119 __GLXDRIdrawable *pdraw = GetGLXDRIDrawable(gc->currentDpy,
2120 gc->currentDrawable, NULL);
2121 psc->driScreen->setSwapInterval(pdraw, interval);
2127 return GLX_BAD_CONTEXT;
2132 __glXGetSwapIntervalMESA(void)
2134 #ifdef __DRI_SWAP_CONTROL
2135 GLXContext gc = __glXGetCurrentContext();
2137 if (gc != NULL && gc->driContext) {
2138 __GLXscreenConfigs *const psc = GetGLXScreenConfigs(gc->currentDpy,
2141 if ((psc != NULL) && (psc->driScreen != NULL)) {
2142 __GLXDRIdrawable *pdraw =
2143 GetGLXDRIDrawable(gc->currentDpy, gc->currentDrawable, NULL);
2144 if (psc->swapControl != NULL && pdraw != NULL) {
2145 return psc->swapControl->getSwapInterval(pdraw->driDrawable);
2151 #ifdef GLX_DIRECT_RENDERING
2152 if (gc != NULL && gc->driContext) {
2153 __GLXscreenConfigs *psc;
2155 psc = GetGLXScreenConfigs( gc->currentDpy, gc->screen);
2156 if (psc->driScreen && psc->driScreen->getSwapInterval) {
2157 __GLXDRIdrawable *pdraw = GetGLXDRIDrawable(gc->currentDpy,
2158 gc->currentDrawable, NULL);
2159 return psc->driScreen->getSwapInterval(pdraw);
2169 ** GLX_MESA_swap_frame_usage
2173 __glXBeginFrameTrackingMESA(Display * dpy, GLXDrawable drawable)
2175 int status = GLX_BAD_CONTEXT;
2176 #ifdef __DRI_FRAME_TRACKING
2178 __GLXDRIdrawable *pdraw = GetGLXDRIDrawable(dpy, drawable, &screen);
2179 __GLXscreenConfigs *const psc = GetGLXScreenConfigs(dpy, screen);
2181 if (pdraw != NULL && psc->frameTracking != NULL)
2182 status = psc->frameTracking->frameTracking(pdraw->driDrawable, GL_TRUE);
2192 __glXEndFrameTrackingMESA(Display * dpy, GLXDrawable drawable)
2194 int status = GLX_BAD_CONTEXT;
2195 #ifdef __DRI_FRAME_TRACKING
2197 __GLXDRIdrawable *pdraw = GetGLXDRIDrawable(dpy, drawable, &screen);
2198 __GLXscreenConfigs *psc = GetGLXScreenConfigs(dpy, screen);
2200 if (pdraw != NULL && psc->frameTracking != NULL)
2201 status = psc->frameTracking->frameTracking(pdraw->driDrawable,
2212 __glXGetFrameUsageMESA(Display * dpy, GLXDrawable drawable, GLfloat * usage)
2214 int status = GLX_BAD_CONTEXT;
2215 #ifdef __DRI_FRAME_TRACKING
2217 __GLXDRIdrawable *const pdraw = GetGLXDRIDrawable(dpy, drawable, &screen);
2218 __GLXscreenConfigs *const psc = GetGLXScreenConfigs(dpy, screen);
2220 if (pdraw != NULL && psc->frameTracking != NULL) {
2221 int64_t sbc, missedFrames;
2222 float lastMissedUsage;
2224 status = psc->frameTracking->queryFrameTracking(pdraw->driDrawable,
2240 __glXQueryFrameTrackingMESA(Display * dpy, GLXDrawable drawable,
2241 int64_t * sbc, int64_t * missedFrames,
2242 GLfloat * lastMissedUsage)
2244 int status = GLX_BAD_CONTEXT;
2245 #ifdef __DRI_FRAME_TRACKING
2247 __GLXDRIdrawable *pdraw = GetGLXDRIDrawable(dpy, drawable, &screen);
2248 __GLXscreenConfigs *const psc = GetGLXScreenConfigs(dpy, screen);
2250 if (pdraw != NULL && psc->frameTracking != NULL) {
2253 status = psc->frameTracking->queryFrameTracking(pdraw->driDrawable,
2262 (void) missedFrames;
2263 (void) lastMissedUsage;
2270 ** GLX_SGI_video_sync
2273 __glXGetVideoSyncSGI(unsigned int *count)
2275 int64_t ust, msc, sbc;
2277 GLXContext gc = __glXGetCurrentContext();
2278 __GLXscreenConfigs *psc;
2279 #ifdef GLX_DIRECT_RENDERING
2280 __GLXDRIdrawable *pdraw;
2284 return GLX_BAD_CONTEXT;
2286 #ifdef GLX_DIRECT_RENDERING
2287 if (!gc->driContext)
2288 return GLX_BAD_CONTEXT;
2291 psc = GetGLXScreenConfigs(gc->currentDpy, gc->screen);
2292 #ifdef GLX_DIRECT_RENDERING
2293 pdraw = GetGLXDRIDrawable(gc->currentDpy, gc->currentDrawable, NULL);
2296 /* FIXME: Looking at the GLX_SGI_video_sync spec in the extension registry,
2297 * FIXME: there should be a GLX encoding for this call. I can find no
2298 * FIXME: documentation for the GLX encoding.
2300 #ifdef __DRI_MEDIA_STREAM_COUNTER
2301 if ( psc->msc && psc->driScreen ) {
2302 ret = (*psc->msc->getDrawableMSC)(psc->__driScreen,
2303 pdraw->driDrawable, &msc);
2304 *count = (unsigned) msc;
2306 return (ret == 0) ? 0 : GLX_BAD_CONTEXT;
2310 #ifdef GLX_DIRECT_RENDERING
2311 if (psc->driScreen && psc->driScreen->getDrawableMSC) {
2312 ret = psc->driScreen->getDrawableMSC(psc, pdraw, &ust, &msc, &sbc);
2313 *count = (unsigned) msc;
2314 return (ret == True) ? 0 : GLX_BAD_CONTEXT;
2318 return GLX_BAD_CONTEXT;
2322 __glXWaitVideoSyncSGI(int divisor, int remainder, unsigned int *count)
2324 GLXContext gc = __glXGetCurrentContext();
2325 __GLXscreenConfigs *psc;
2326 #ifdef GLX_DIRECT_RENDERING
2327 __GLXDRIdrawable *pdraw;
2329 int64_t ust, msc, sbc;
2332 if (divisor <= 0 || remainder < 0)
2333 return GLX_BAD_VALUE;
2336 return GLX_BAD_CONTEXT;
2338 #ifdef GLX_DIRECT_RENDERING
2339 if (!gc->driContext)
2340 return GLX_BAD_CONTEXT;
2343 psc = GetGLXScreenConfigs( gc->currentDpy, gc->screen);
2344 #ifdef GLX_DIRECT_RENDERING
2345 pdraw = GetGLXDRIDrawable(gc->currentDpy, gc->currentDrawable, NULL);
2348 #ifdef __DRI_MEDIA_STREAM_COUNTER
2349 if (psc->msc != NULL && psc->driScreen ) {
2350 ret = (*psc->msc->waitForMSC)(pdraw->driDrawable, 0,
2351 divisor, remainder, &msc, &sbc);
2352 *count = (unsigned) msc;
2353 return (ret == 0) ? 0 : GLX_BAD_CONTEXT;
2357 #ifdef GLX_DIRECT_RENDERING
2358 if (psc->driScreen && psc->driScreen->waitForMSC) {
2359 ret = psc->driScreen->waitForMSC(pdraw, 0, divisor, remainder, &ust, &msc,
2361 *count = (unsigned) msc;
2362 return (ret == True) ? 0 : GLX_BAD_CONTEXT;
2366 return GLX_BAD_CONTEXT;
2369 #endif /* GLX_USE_APPLEGL */
2372 ** GLX_SGIX_fbconfig
2373 ** Many of these functions are aliased to GLX 1.3 entry points in the
2374 ** GLX_functions table.
2378 GLX_ALIAS(int, glXGetFBConfigAttribSGIX,
2379 (Display * dpy, GLXFBConfigSGIX config, int attribute, int *value),
2380 (dpy, config, attribute, value), glXGetFBConfigAttrib)
2382 PUBLIC GLX_ALIAS(GLXFBConfigSGIX *, glXChooseFBConfigSGIX,
2383 (Display * dpy, int screen, int *attrib_list,
2384 int *nelements), (dpy, screen, attrib_list, nelements),
2387 PUBLIC GLX_ALIAS(XVisualInfo *, glXGetVisualFromFBConfigSGIX,
2388 (Display * dpy, GLXFBConfigSGIX config),
2389 (dpy, config), glXGetVisualFromFBConfig)
2392 glXCreateGLXPixmapWithConfigSGIX(Display * dpy,
2393 GLXFBConfigSGIX config,
2396 #ifndef GLX_USE_APPLEGL
2397 xGLXVendorPrivateWithReplyReq *vpreq;
2398 xGLXCreateGLXPixmapWithConfigSGIXReq *req;
2399 GLXPixmap xid = None;
2401 __GLXscreenConfigs *psc;
2403 const __GLcontextModes *const fbconfig = (__GLcontextModes *) config;
2406 if ((dpy == NULL) || (config == NULL)) {
2409 #ifdef GLX_USE_APPLEGL
2410 if(apple_glx_pixmap_create(dpy, fbconfig->screen, pixmap, fbconfig))
2415 psc = GetGLXScreenConfigs(dpy, fbconfig->screen);
2417 && __glXExtensionBitIsEnabled(psc, SGIX_fbconfig_bit)) {
2418 opcode = __glXSetupForCommand(dpy);
2423 /* Send the glXCreateGLXPixmapWithConfigSGIX request */
2425 GetReqExtra(GLXVendorPrivateWithReply,
2426 sz_xGLXCreateGLXPixmapWithConfigSGIXReq -
2427 sz_xGLXVendorPrivateWithReplyReq, vpreq);
2428 req = (xGLXCreateGLXPixmapWithConfigSGIXReq *) vpreq;
2429 req->reqType = opcode;
2430 req->glxCode = X_GLXVendorPrivateWithReply;
2431 req->vendorCode = X_GLXvop_CreateGLXPixmapWithConfigSGIX;
2432 req->screen = fbconfig->screen;
2433 req->fbconfig = fbconfig->fbconfigID;
2434 req->pixmap = pixmap;
2435 req->glxpixmap = xid = XAllocID(dpy);
2445 glXCreateContextWithConfigSGIX(Display * dpy,
2446 GLXFBConfigSGIX config, int renderType,
2447 GLXContext shareList, Bool allowDirect)
2449 GLXContext gc = NULL;
2450 const __GLcontextModes *const fbconfig = (__GLcontextModes *) config;
2451 __GLXscreenConfigs *psc;
2454 if ((dpy == NULL) || (config == NULL)) {
2458 psc = GetGLXScreenConfigs(dpy, fbconfig->screen);
2460 && __glXExtensionBitIsEnabled(psc, SGIX_fbconfig_bit)) {
2461 gc = CreateContext(dpy, fbconfig->fbconfigID, fbconfig, shareList,
2463 X_GLXvop_CreateContextWithConfigSGIX, renderType,
2471 PUBLIC GLXFBConfigSGIX
2472 glXGetFBConfigFromVisualSGIX(Display * dpy, XVisualInfo * vis)
2474 __GLXdisplayPrivate *priv;
2475 __GLXscreenConfigs *psc = NULL;
2477 if ((GetGLXPrivScreenConfig(dpy, vis->screen, &priv, &psc) != Success)
2478 && __glXExtensionBitIsEnabled(psc, SGIX_fbconfig_bit)
2479 && (psc->configs->fbconfigID != (int) GLX_DONT_CARE)) {
2480 return (GLXFBConfigSGIX) _gl_context_modes_find_visual(psc->configs,
2487 #ifndef GLX_USE_APPLEGL
2489 ** GLX_SGIX_swap_group
2492 __glXJoinSwapGroupSGIX(Display * dpy, GLXDrawable drawable,
2502 ** GLX_SGIX_swap_barrier
2505 __glXBindSwapBarrierSGIX(Display * dpy, GLXDrawable drawable, int barrier)
2513 __glXQueryMaxSwapBarriersSGIX(Display * dpy, int screen, int *max)
2523 ** GLX_OML_sync_control
2526 __glXGetSyncValuesOML(Display * dpy, GLXDrawable drawable,
2527 int64_t * ust, int64_t * msc, int64_t * sbc)
2529 __GLXdisplayPrivate * const priv = __glXInitialize(dpy);
2531 #ifdef GLX_DIRECT_RENDERING
2532 __GLXDRIdrawable *pdraw;
2534 __GLXscreenConfigs *psc;
2539 #ifdef GLX_DIRECT_RENDERING
2540 pdraw = GetGLXDRIDrawable(dpy, drawable, &i);
2542 psc = &priv->screenConfigs[i];
2544 #if defined(__DRI_SWAP_BUFFER_COUNTER) && defined(__DRI_MEDIA_STREAM_COUNTER)
2545 if (pdraw && psc->sbc && psc->msc)
2546 return ( (pdraw && psc->sbc && psc->msc)
2547 && ((*psc->msc->getMSC)(psc->driScreen, msc) == 0)
2548 && ((*psc->sbc->getSBC)(pdraw->driDrawable, sbc) == 0)
2549 && (__glXGetUST(ust) == 0) );
2552 #ifdef GLX_DIRECT_RENDERING
2553 if (pdraw && psc && psc->driScreen && psc->driScreen->getDrawableMSC) {
2554 ret = psc->driScreen->getDrawableMSC(psc, pdraw, ust, msc, sbc);
2562 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
2564 __driGetMscRateOML(__DRIdrawable * draw,
2565 int32_t * numerator, int32_t * denominator, void *private)
2568 __GLXscreenConfigs *psc;
2569 XF86VidModeModeLine mode_line;
2572 __GLXDRIdrawable *glxDraw = private;
2577 if (XF86VidModeQueryVersion(psc->dpy, &i, &i) &&
2578 XF86VidModeGetModeLine(psc->dpy, psc->scr, &dot_clock, &mode_line)) {
2579 unsigned n = dot_clock * 1000;
2580 unsigned d = mode_line.vtotal * mode_line.htotal;
2582 # define V_INTERLACE 0x010
2583 # define V_DBLSCAN 0x020
2585 if (mode_line.flags & V_INTERLACE)
2587 else if (mode_line.flags & V_DBLSCAN)
2590 /* The OML_sync_control spec requires that if the refresh rate is a
2591 * whole number, that the returned numerator be equal to the refresh
2592 * rate and the denominator be 1.
2600 static const unsigned f[] = { 13, 11, 7, 5, 3, 2, 0 };
2602 /* This is a poor man's way to reduce a fraction. It's far from
2603 * perfect, but it will work well enough for this situation.
2606 for (i = 0; f[i] != 0; i++) {
2607 while (n % f[i] == 0 && d % f[i] == 0) {
2633 * Determine the refresh rate of the specified drawable and display.
2635 * \param dpy Display whose refresh rate is to be determined.
2636 * \param drawable Drawable whose refresh rate is to be determined.
2637 * \param numerator Numerator of the refresh rate.
2638 * \param demoninator Denominator of the refresh rate.
2639 * \return If the refresh rate for the specified display and drawable could
2640 * be calculated, True is returned. Otherwise False is returned.
2642 * \note This function is implemented entirely client-side. A lot of other
2643 * functionality is required to export GLX_OML_sync_control, so on
2644 * XFree86 this function can be called for direct-rendering contexts
2645 * when GLX_OML_sync_control appears in the client extension string.
2649 __glXGetMscRateOML(Display * dpy, GLXDrawable drawable,
2650 int32_t * numerator, int32_t * denominator)
2652 #if defined( GLX_DIRECT_RENDERING ) && defined( XF86VIDMODE )
2653 __GLXDRIdrawable *draw = GetGLXDRIDrawable(dpy, drawable, NULL);
2658 return __driGetMscRateOML(draw->driDrawable, numerator, denominator, draw);
2670 __glXSwapBuffersMscOML(Display * dpy, GLXDrawable drawable,
2671 int64_t target_msc, int64_t divisor, int64_t remainder)
2673 GLXContext gc = __glXGetCurrentContext();
2675 #ifdef GLX_DIRECT_RENDERING
2676 __GLXDRIdrawable *pdraw = GetGLXDRIDrawable(dpy, drawable, &screen);
2678 __GLXscreenConfigs *const psc = GetGLXScreenConfigs(dpy, screen);
2680 if (!gc) /* no GLX for this */
2683 #ifdef GLX_DIRECT_RENDERING
2684 if (!pdraw || !gc->driContext)
2688 /* The OML_sync_control spec says these should "generate a GLX_BAD_VALUE
2689 * error", but it also says "It [glXSwapBuffersMscOML] will return a value
2690 * of -1 if the function failed because of errors detected in the input
2693 if (divisor < 0 || remainder < 0 || target_msc < 0)
2695 if (divisor > 0 && remainder >= divisor)
2698 #ifdef __DRI_SWAP_BUFFER_COUNTER
2699 if (psc->counters != NULL)
2700 return (*psc->sbc->swapBuffersMSC)(pdraw->driDrawable, target_msc,
2701 divisor, remainder);
2704 #ifdef GLX_DIRECT_RENDERING
2705 if (psc->driScreen && psc->driScreen->swapBuffers)
2706 return (*psc->driScreen->swapBuffers)(pdraw, target_msc, divisor,
2715 __glXWaitForMscOML(Display * dpy, GLXDrawable drawable,
2716 int64_t target_msc, int64_t divisor,
2717 int64_t remainder, int64_t * ust,
2718 int64_t * msc, int64_t * sbc)
2721 #ifdef GLX_DIRECT_RENDERING
2722 __GLXDRIdrawable *pdraw = GetGLXDRIDrawable(dpy, drawable, &screen);
2724 __GLXscreenConfigs * const psc = GetGLXScreenConfigs( dpy, screen );
2728 /* The OML_sync_control spec says these should "generate a GLX_BAD_VALUE
2729 * error", but the return type in the spec is Bool.
2731 if (divisor < 0 || remainder < 0 || target_msc < 0)
2733 if (divisor > 0 && remainder >= divisor)
2736 #ifdef __DRI_MEDIA_STREAM_COUNTER
2737 if (pdraw != NULL && psc->msc != NULL) {
2738 ret = (*psc->msc->waitForMSC) (pdraw->driDrawable, target_msc,
2739 divisor, remainder, msc, sbc);
2741 /* __glXGetUST returns zero on success and non-zero on failure.
2742 * This function returns True on success and False on failure.
2744 return ((ret == 0) && (__glXGetUST(ust) == 0));
2748 #ifdef GLX_DIRECT_RENDERING
2749 if (pdraw && psc->driScreen && psc->driScreen->waitForMSC) {
2750 ret = psc->driScreen->waitForMSC(pdraw, target_msc, divisor, remainder,
2761 __glXWaitForSbcOML(Display * dpy, GLXDrawable drawable,
2762 int64_t target_sbc, int64_t * ust,
2763 int64_t * msc, int64_t * sbc)
2766 #ifdef GLX_DIRECT_RENDERING
2767 __GLXDRIdrawable *pdraw = GetGLXDRIDrawable(dpy, drawable, &screen);
2769 __GLXscreenConfigs *const psc = GetGLXScreenConfigs(dpy, screen);
2772 /* The OML_sync_control spec says this should "generate a GLX_BAD_VALUE
2773 * error", but the return type in the spec is Bool.
2777 #ifdef __DRI_SWAP_BUFFER_COUNTER
2778 if (pdraw != NULL && psc->sbc != NULL) {
2780 (*psc->sbc->waitForSBC) (pdraw->driDrawable, target_sbc, msc, sbc);
2782 /* __glXGetUST returns zero on success and non-zero on failure.
2783 * This function returns True on success and False on failure.
2785 return ((ret == 0) && (__glXGetUST(ust) == 0));
2789 #ifdef GLX_DIRECT_RENDERING
2790 if (pdraw && psc->driScreen && psc->driScreen->waitForSBC) {
2791 ret = psc->driScreen->waitForSBC(pdraw, target_sbc, ust, msc, sbc);
2801 * GLX_MESA_allocate_memory
2806 glXAllocateMemoryMESA(Display * dpy, int scrn,
2807 size_t size, float readFreq,
2808 float writeFreq, float priority)
2810 #ifdef __DRI_ALLOCATE
2811 __GLXscreenConfigs *const psc = GetGLXScreenConfigs(dpy, scrn);
2813 if (psc && psc->allocate)
2814 return (*psc->allocate->allocateMemory) (psc->__driScreen, size,
2815 readFreq, writeFreq, priority);
2824 #endif /* __DRI_ALLOCATE */
2831 glXFreeMemoryMESA(Display * dpy, int scrn, void *pointer)
2833 #ifdef __DRI_ALLOCATE
2834 __GLXscreenConfigs *const psc = GetGLXScreenConfigs(dpy, scrn);
2836 if (psc && psc->allocate)
2837 (*psc->allocate->freeMemory) (psc->__driScreen, pointer);
2843 #endif /* __DRI_ALLOCATE */
2848 glXGetMemoryOffsetMESA(Display * dpy, int scrn, const void *pointer)
2850 #ifdef __DRI_ALLOCATE
2851 __GLXscreenConfigs *const psc = GetGLXScreenConfigs(dpy, scrn);
2853 if (psc && psc->allocate)
2854 return (*psc->allocate->memoryOffset) (psc->__driScreen, pointer);
2860 #endif /* GLX_DIRECT_RENDERING */
2869 * Mesa extension stubs. These will help reduce portability problems.
2874 * Release all buffers associated with the specified GLX drawable.
2877 * This function was intended for stand-alone Mesa. The issue there is that
2878 * the library doesn't get any notification when a window is closed. In
2879 * DRI there is a similar but slightly different issue. When GLX 1.3 is
2880 * supported, there are 3 different functions to destroy a drawable. It
2881 * should be possible to create GLX protocol (or have it determine which
2882 * protocol to use based on the type of the drawable) to have one function
2883 * do the work of 3. For the direct-rendering case, this function could
2884 * just call the driver's \c __DRIdrawableRec::destroyDrawable function.
2885 * This would reduce the frequency with which \c __driGarbageCollectDrawables
2886 * would need to be used. This really should be done as part of the new DRI
2889 * \sa http://oss.sgi.com/projects/ogl-sample/registry/MESA/release_buffers.txt
2890 * __driGarbageCollectDrawables
2891 * glXDestroyGLXPixmap
2892 * glXDestroyPbuffer glXDestroyPixmap glXDestroyWindow
2893 * glXDestroyGLXPbufferSGIX glXDestroyGLXVideoSourceSGIX
2896 __glXReleaseBuffersMESA(Display * dpy, GLXDrawable d)
2905 glXCreateGLXPixmapMESA(Display * dpy, XVisualInfo * visual,
2906 Pixmap pixmap, Colormap cmap)
2919 * GLX_MESA_copy_sub_buffer
2921 #define X_GLXvop_CopySubBufferMESA 5154 /* temporary */
2923 __glXCopySubBufferMESA(Display * dpy, GLXDrawable drawable,
2924 int x, int y, int width, int height)
2926 xGLXVendorPrivateReq *req;
2929 CARD32 *drawable_ptr;
2930 INT32 *x_ptr, *y_ptr, *w_ptr, *h_ptr;
2933 #ifdef __DRI_COPY_SUB_BUFFER
2935 __GLXDRIdrawable *pdraw = GetGLXDRIDrawable(dpy, drawable, &screen);
2936 if (pdraw != NULL) {
2937 __GLXscreenConfigs *const psc = GetGLXScreenConfigs(dpy, screen);
2938 if (psc->driScreen->copySubBuffer != NULL) {
2940 (*psc->driScreen->copySubBuffer) (pdraw, x, y, width, height);
2947 opcode = __glXSetupForCommand(dpy);
2952 ** The calling thread may or may not have a current context. If it
2953 ** does, send the context tag so the server can do a flush.
2955 gc = __glXGetCurrentContext();
2956 if ((gc != NULL) && (dpy == gc->currentDpy) &&
2957 ((drawable == gc->currentDrawable) ||
2958 (drawable == gc->currentReadable))) {
2959 tag = gc->currentContextTag;
2966 GetReqExtra(GLXVendorPrivate, sizeof(CARD32) + sizeof(INT32) * 4, req);
2967 req->reqType = opcode;
2968 req->glxCode = X_GLXVendorPrivate;
2969 req->vendorCode = X_GLXvop_CopySubBufferMESA;
2970 req->contextTag = tag;
2972 drawable_ptr = (CARD32 *) (req + 1);
2973 x_ptr = (INT32 *) (drawable_ptr + 1);
2974 y_ptr = (INT32 *) (drawable_ptr + 2);
2975 w_ptr = (INT32 *) (drawable_ptr + 3);
2976 h_ptr = (INT32 *) (drawable_ptr + 4);
2978 *drawable_ptr = drawable;
2990 * GLX_EXT_texture_from_pixmap
2994 __glXBindTexImageEXT(Display * dpy,
2995 GLXDrawable drawable, int buffer, const int *attrib_list)
2997 xGLXVendorPrivateReq *req;
2998 GLXContext gc = __glXGetCurrentContext();
2999 CARD32 *drawable_ptr;
3001 CARD32 *num_attrib_ptr;
3011 while (attrib_list[i * 2] != None)
3015 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
3016 if (gc->driContext) {
3017 __GLXDRIdrawable *pdraw = GetGLXDRIDrawable(dpy, drawable, NULL);
3019 if (pdraw != NULL) {
3020 if (pdraw->psc->texBuffer->base.version >= 2 &&
3021 pdraw->psc->texBuffer->setTexBuffer2 != NULL) {
3022 (*pdraw->psc->texBuffer->setTexBuffer2) (gc->__driContext,
3023 pdraw->textureTarget,
3024 pdraw->textureFormat,
3025 pdraw->driDrawable);
3028 (*pdraw->psc->texBuffer->setTexBuffer) (gc->__driContext,
3029 pdraw->textureTarget,
3030 pdraw->driDrawable);
3037 opcode = __glXSetupForCommand(dpy);
3042 GetReqExtra(GLXVendorPrivate, 12 + 8 * i, req);
3043 req->reqType = opcode;
3044 req->glxCode = X_GLXVendorPrivate;
3045 req->vendorCode = X_GLXvop_BindTexImageEXT;
3046 req->contextTag = gc->currentContextTag;
3048 drawable_ptr = (CARD32 *) (req + 1);
3049 buffer_ptr = (INT32 *) (drawable_ptr + 1);
3050 num_attrib_ptr = (CARD32 *) (buffer_ptr + 1);
3051 attrib_ptr = (CARD32 *) (num_attrib_ptr + 1);
3053 *drawable_ptr = drawable;
3054 *buffer_ptr = buffer;
3055 *num_attrib_ptr = (CARD32) i;
3059 while (attrib_list[i * 2] != None) {
3060 *attrib_ptr++ = (CARD32) attrib_list[i * 2 + 0];
3061 *attrib_ptr++ = (CARD32) attrib_list[i * 2 + 1];
3071 __glXReleaseTexImageEXT(Display * dpy, GLXDrawable drawable, int buffer)
3073 xGLXVendorPrivateReq *req;
3074 GLXContext gc = __glXGetCurrentContext();
3075 CARD32 *drawable_ptr;
3079 if ((gc == NULL) || GC_IS_DIRECT(gc))
3082 opcode = __glXSetupForCommand(dpy);
3087 GetReqExtra(GLXVendorPrivate, sizeof(CARD32) + sizeof(INT32), req);
3088 req->reqType = opcode;
3089 req->glxCode = X_GLXVendorPrivate;
3090 req->vendorCode = X_GLXvop_ReleaseTexImageEXT;
3091 req->contextTag = gc->currentContextTag;
3093 drawable_ptr = (CARD32 *) (req + 1);
3094 buffer_ptr = (INT32 *) (drawable_ptr + 1);
3096 *drawable_ptr = drawable;
3097 *buffer_ptr = buffer;
3105 #endif /* GLX_USE_APPLEGL */
3108 * \c strdup is actually not a standard ANSI C or POSIX routine.
3109 * Irix will not define it if ANSI mode is in effect.
3114 __glXstrdup(const char *str)
3117 copy = (char *) Xmalloc(strlen(str) + 1);
3125 ** glXGetProcAddress support
3128 struct name_address_pair
3134 #define GLX_FUNCTION(f) { # f, (GLvoid *) f }
3135 #define GLX_FUNCTION2(n,f) { # n, (GLvoid *) f }
3137 static const struct name_address_pair GLX_functions[] = {
3138 /*** GLX_VERSION_1_0 ***/
3139 GLX_FUNCTION(glXChooseVisual),
3140 GLX_FUNCTION(glXCopyContext),
3141 GLX_FUNCTION(glXCreateContext),
3142 GLX_FUNCTION(glXCreateGLXPixmap),
3143 GLX_FUNCTION(glXDestroyContext),
3144 GLX_FUNCTION(glXDestroyGLXPixmap),
3145 GLX_FUNCTION(glXGetConfig),
3146 GLX_FUNCTION(glXGetCurrentContext),
3147 GLX_FUNCTION(glXGetCurrentDrawable),
3148 GLX_FUNCTION(glXIsDirect),
3149 GLX_FUNCTION(glXMakeCurrent),
3150 GLX_FUNCTION(glXQueryExtension),
3151 GLX_FUNCTION(glXQueryVersion),
3152 GLX_FUNCTION(glXSwapBuffers),
3153 GLX_FUNCTION(glXUseXFont),
3154 GLX_FUNCTION(glXWaitGL),
3155 GLX_FUNCTION(glXWaitX),
3157 /*** GLX_VERSION_1_1 ***/
3158 GLX_FUNCTION(glXGetClientString),
3159 GLX_FUNCTION(glXQueryExtensionsString),
3160 GLX_FUNCTION(glXQueryServerString),
3162 /*** GLX_VERSION_1_2 ***/
3163 GLX_FUNCTION(glXGetCurrentDisplay),
3165 /*** GLX_VERSION_1_3 ***/
3166 GLX_FUNCTION(glXChooseFBConfig),
3167 GLX_FUNCTION(glXCreateNewContext),
3168 GLX_FUNCTION(glXCreatePbuffer),
3169 GLX_FUNCTION(glXCreatePixmap),
3170 GLX_FUNCTION(glXCreateWindow),
3171 GLX_FUNCTION(glXDestroyPbuffer),
3172 GLX_FUNCTION(glXDestroyPixmap),
3173 GLX_FUNCTION(glXDestroyWindow),
3174 GLX_FUNCTION(glXGetCurrentReadDrawable),
3175 GLX_FUNCTION(glXGetFBConfigAttrib),
3176 GLX_FUNCTION(glXGetFBConfigs),
3177 GLX_FUNCTION(glXGetSelectedEvent),
3178 GLX_FUNCTION(glXGetVisualFromFBConfig),
3179 GLX_FUNCTION(glXMakeContextCurrent),
3180 GLX_FUNCTION(glXQueryContext),
3181 GLX_FUNCTION(glXQueryDrawable),
3182 GLX_FUNCTION(glXSelectEvent),
3184 #ifndef GLX_USE_APPLEGL
3185 /*** GLX_SGI_swap_control ***/
3186 GLX_FUNCTION2(glXSwapIntervalSGI, __glXSwapIntervalSGI),
3188 /*** GLX_SGI_video_sync ***/
3189 GLX_FUNCTION2(glXGetVideoSyncSGI, __glXGetVideoSyncSGI),
3190 GLX_FUNCTION2(glXWaitVideoSyncSGI, __glXWaitVideoSyncSGI),
3192 /*** GLX_SGI_make_current_read ***/
3193 GLX_FUNCTION2(glXMakeCurrentReadSGI, glXMakeContextCurrent),
3194 GLX_FUNCTION2(glXGetCurrentReadDrawableSGI, glXGetCurrentReadDrawable),
3196 /*** GLX_EXT_import_context ***/
3197 GLX_FUNCTION(glXFreeContextEXT),
3198 GLX_FUNCTION(glXGetContextIDEXT),
3199 GLX_FUNCTION2(glXGetCurrentDisplayEXT, glXGetCurrentDisplay),
3200 GLX_FUNCTION(glXImportContextEXT),
3201 GLX_FUNCTION2(glXQueryContextInfoEXT, glXQueryContext),
3204 /*** GLX_SGIX_fbconfig ***/
3205 GLX_FUNCTION2(glXGetFBConfigAttribSGIX, glXGetFBConfigAttrib),
3206 GLX_FUNCTION2(glXChooseFBConfigSGIX, glXChooseFBConfig),
3207 GLX_FUNCTION(glXCreateGLXPixmapWithConfigSGIX),
3208 GLX_FUNCTION(glXCreateContextWithConfigSGIX),
3209 GLX_FUNCTION2(glXGetVisualFromFBConfigSGIX, glXGetVisualFromFBConfig),
3210 GLX_FUNCTION(glXGetFBConfigFromVisualSGIX),
3212 #ifndef GLX_USE_APPLEGL
3213 /*** GLX_SGIX_pbuffer ***/
3214 GLX_FUNCTION(glXCreateGLXPbufferSGIX),
3215 GLX_FUNCTION(glXDestroyGLXPbufferSGIX),
3216 GLX_FUNCTION(glXQueryGLXPbufferSGIX),
3217 GLX_FUNCTION(glXSelectEventSGIX),
3218 GLX_FUNCTION(glXGetSelectedEventSGIX),
3220 /*** GLX_SGIX_swap_group ***/
3221 GLX_FUNCTION2(glXJoinSwapGroupSGIX, __glXJoinSwapGroupSGIX),
3223 /*** GLX_SGIX_swap_barrier ***/
3224 GLX_FUNCTION2(glXBindSwapBarrierSGIX, __glXBindSwapBarrierSGIX),
3225 GLX_FUNCTION2(glXQueryMaxSwapBarriersSGIX, __glXQueryMaxSwapBarriersSGIX),
3227 /*** GLX_MESA_allocate_memory ***/
3228 GLX_FUNCTION(glXAllocateMemoryMESA),
3229 GLX_FUNCTION(glXFreeMemoryMESA),
3230 GLX_FUNCTION(glXGetMemoryOffsetMESA),
3232 /*** GLX_MESA_copy_sub_buffer ***/
3233 GLX_FUNCTION2(glXCopySubBufferMESA, __glXCopySubBufferMESA),
3235 /*** GLX_MESA_pixmap_colormap ***/
3236 GLX_FUNCTION(glXCreateGLXPixmapMESA),
3238 /*** GLX_MESA_release_buffers ***/
3239 GLX_FUNCTION2(glXReleaseBuffersMESA, __glXReleaseBuffersMESA),
3241 /*** GLX_MESA_swap_control ***/
3242 GLX_FUNCTION2(glXSwapIntervalMESA, __glXSwapIntervalMESA),
3243 GLX_FUNCTION2(glXGetSwapIntervalMESA, __glXGetSwapIntervalMESA),
3245 /*** GLX_MESA_swap_frame_usage ***/
3246 GLX_FUNCTION2(glXBeginFrameTrackingMESA, __glXBeginFrameTrackingMESA),
3247 GLX_FUNCTION2(glXEndFrameTrackingMESA, __glXEndFrameTrackingMESA),
3248 GLX_FUNCTION2(glXGetFrameUsageMESA, __glXGetFrameUsageMESA),
3249 GLX_FUNCTION2(glXQueryFrameTrackingMESA, __glXQueryFrameTrackingMESA),
3252 /*** GLX_ARB_get_proc_address ***/
3253 GLX_FUNCTION(glXGetProcAddressARB),
3256 GLX_FUNCTION2(glXGetProcAddress, glXGetProcAddressARB),
3258 #ifndef GLX_USE_APPLEGL
3259 /*** GLX_OML_sync_control ***/
3260 GLX_FUNCTION2(glXWaitForSbcOML, __glXWaitForSbcOML),
3261 GLX_FUNCTION2(glXWaitForMscOML, __glXWaitForMscOML),
3262 GLX_FUNCTION2(glXSwapBuffersMscOML, __glXSwapBuffersMscOML),
3263 GLX_FUNCTION2(glXGetMscRateOML, __glXGetMscRateOML),
3264 GLX_FUNCTION2(glXGetSyncValuesOML, __glXGetSyncValuesOML),
3266 /*** GLX_EXT_texture_from_pixmap ***/
3267 GLX_FUNCTION2(glXBindTexImageEXT, __glXBindTexImageEXT),
3268 GLX_FUNCTION2(glXReleaseTexImageEXT, __glXReleaseTexImageEXT),
3271 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
3272 /*** DRI configuration ***/
3273 GLX_FUNCTION(glXGetScreenDriver),
3274 GLX_FUNCTION(glXGetDriverConfig),
3277 {NULL, NULL} /* end of list */
3280 #ifndef GLX_USE_APPLEGL
3281 static const GLvoid *
3282 get_glx_proc_address(const char *funcName)
3286 /* try static functions */
3287 for (i = 0; GLX_functions[i].Name; i++) {
3288 if (strcmp(GLX_functions[i].Name, funcName) == 0)
3289 return GLX_functions[i].Address;
3297 * Get the address of a named GL function. This is the pre-GLX 1.4 name for
3298 * \c glXGetProcAddress.
3300 * \param procName Name of a GL or GLX function.
3301 * \returns A pointer to the named function
3303 * \sa glXGetProcAddress
3305 PUBLIC void (*glXGetProcAddressARB(const GLubyte * procName)) (void)
3307 typedef void (*gl_function) (void);
3311 /* Search the table of GLX and internal functions first. If that
3312 * fails and the supplied name could be a valid core GL name, try
3313 * searching the core GL function table. This check is done to prevent
3314 * DRI based drivers from searching the core GL function table for
3315 * internal API functions.
3317 #ifdef GLX_USE_APPLEGL
3318 f = (gl_function) apple_glx_get_proc_address(procName);
3320 f = (gl_function) get_glx_proc_address((const char *) procName);
3321 if ((f == NULL) && (procName[0] == 'g') && (procName[1] == 'l')
3322 && (procName[2] != 'X')) {
3323 f = (gl_function) _glapi_get_proc_address((const char *) procName);
3330 * Get the address of a named GL function. This is the GLX 1.4 name for
3331 * \c glXGetProcAddressARB.
3333 * \param procName Name of a GL or GLX function.
3334 * \returns A pointer to the named function
3336 * \sa glXGetProcAddressARB
3338 PUBLIC void (*glXGetProcAddress(const GLubyte * procName)) (void)
3339 #if defined(__GNUC__) && !defined(GLX_ALIAS_UNSUPPORTED)
3340 __attribute__ ((alias("glXGetProcAddressARB")));
3343 return glXGetProcAddressARB(procName);
3345 #endif /* __GNUC__ */
3348 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
3350 * Get the unadjusted system time (UST). Currently, the UST is measured in
3351 * microseconds since Epoc. The actual resolution of the UST may vary from
3352 * system to system, and the units may vary from release to release.
3353 * Drivers should not call this function directly. They should instead use
3354 * \c glXGetProcAddress to obtain a pointer to the function.
3356 * \param ust Location to store the 64-bit UST
3357 * \returns Zero on success or a negative errno value on failure.
3359 * \sa glXGetProcAddress, PFNGLXGETUSTPROC
3361 * \since Internal API version 20030317.
3364 __glXGetUST(int64_t * ust)
3372 if (gettimeofday(&tv, NULL) == 0) {
3373 ust[0] = (tv.tv_sec * 1000000) + tv.tv_usec;
3380 #endif /* GLX_DIRECT_RENDERING */