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"
40 #include "glx_error.h"
42 #ifdef GLX_DIRECT_RENDERING
43 #ifdef GLX_USE_APPLEGL
44 #include "apple_glx_context.h"
45 #include "apple_glx.h"
49 #include <X11/extensions/xf86vmode.h>
56 #include <X11/Xlib-xcb.h>
60 static const char __glXGLXClientVendorName[] = "Mesa Project and SGI";
61 static const char __glXGLXClientVersion[] = "1.4";
63 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
66 * Get the __DRIdrawable for the drawable associated with a GLXContext
68 * \param dpy The display associated with \c drawable.
69 * \param drawable GLXDrawable whose __DRIdrawable part is to be retrieved.
70 * \param scrn_num If non-NULL, the drawables screen is stored there
71 * \returns A pointer to the context's __DRIdrawable on success, or NULL if
72 * the drawable is not associated with a direct-rendering context.
74 _X_HIDDEN __GLXDRIdrawable *
75 GetGLXDRIDrawable(Display * dpy, GLXDrawable drawable)
77 struct glx_display *priv = __glXInitialize(dpy);
78 __GLXDRIdrawable *pdraw;
83 if (__glxHashLookup(priv->drawHash, drawable, (void *) &pdraw) == 0)
91 _X_HIDDEN struct glx_drawable *
92 GetGLXDrawable(Display *dpy, GLXDrawable drawable)
94 struct glx_display *priv = __glXInitialize(dpy);
95 struct glx_drawable *glxDraw;
100 if (__glxHashLookup(priv->glXDrawHash, drawable, (void *) &glxDraw) == 0)
107 InitGLXDrawable(Display *dpy, struct glx_drawable *glxDraw, XID xDrawable,
108 GLXDrawable drawable)
110 struct glx_display *priv = __glXInitialize(dpy);
115 glxDraw->xDrawable = xDrawable;
116 glxDraw->drawable = drawable;
117 glxDraw->lastEventSbc = 0;
118 glxDraw->eventSbcWrap = 0;
120 return __glxHashInsert(priv->glXDrawHash, drawable, glxDraw);
124 DestroyGLXDrawable(Display *dpy, GLXDrawable drawable)
126 struct glx_display *priv = __glXInitialize(dpy);
127 struct glx_drawable *glxDraw;
132 glxDraw = GetGLXDrawable(dpy, drawable);
133 __glxHashDelete(priv->glXDrawHash, drawable);
138 * Get the GLX per-screen data structure associated with a GLX context.
140 * \param dpy Display for which the GLX per-screen information is to be
142 * \param scrn Screen on \c dpy for which the GLX per-screen information is
144 * \returns A pointer to the GLX per-screen data if \c dpy and \c scrn
145 * specify a valid GLX screen, or NULL otherwise.
147 * \todo Should this function validate that \c scrn is within the screen
148 * number range for \c dpy?
151 _X_HIDDEN struct glx_screen *
152 GetGLXScreenConfigs(Display * dpy, int scrn)
154 struct glx_display *const priv = __glXInitialize(dpy);
158 NULL) ? priv->screens[scrn] : NULL;
163 GetGLXPrivScreenConfig(Display * dpy, int scrn, struct glx_display ** ppriv,
164 struct glx_screen ** ppsc)
166 /* Initialize the extension, if needed . This has the added value
167 * of initializing/allocating the display private
171 return GLX_NO_EXTENSION;
174 *ppriv = __glXInitialize(dpy);
175 if (*ppriv == NULL) {
176 return GLX_NO_EXTENSION;
179 /* Check screen number to see if its valid */
180 if ((scrn < 0) || (scrn >= ScreenCount(dpy))) {
181 return GLX_BAD_SCREEN;
184 /* Check to see if the GL is supported on this screen */
185 *ppsc = (*ppriv)->screens[scrn];
186 if ((*ppsc)->configs == NULL && (*ppsc)->visuals == NULL) {
187 /* No support for GL on this screen regardless of visual */
188 return GLX_BAD_VISUAL;
196 * Determine if a \c GLXFBConfig supplied by the application is valid.
198 * \param dpy Application supplied \c Display pointer.
199 * \param config Application supplied \c GLXFBConfig.
201 * \returns If the \c GLXFBConfig is valid, the a pointer to the matching
202 * \c struct glx_config structure is returned. Otherwise, \c NULL
205 static struct glx_config *
206 ValidateGLXFBConfig(Display * dpy, GLXFBConfig fbconfig)
208 struct glx_display *const priv = __glXInitialize(dpy);
209 int num_screens = ScreenCount(dpy);
211 struct glx_config *config;
214 for (i = 0; i < num_screens; i++) {
215 for (config = priv->screens[i]->configs; config != NULL;
216 config = config->next) {
217 if (config == (struct glx_config *) fbconfig) {
228 * Verifies context's GLX_RENDER_TYPE value with config.
230 * \param config GLX FBConfig which will support the returned renderType.
231 * \param renderType The context render type to be verified.
232 * \return True if the value of context renderType was approved, or 0 if no
233 * valid value was found.
236 validate_renderType_against_config(const struct glx_config *config,
239 switch (renderType) {
241 return (config->renderType & GLX_RGBA_BIT) != 0;
242 case GLX_COLOR_INDEX_TYPE:
243 return (config->renderType & GLX_COLOR_INDEX_BIT) != 0;
244 case GLX_RGBA_FLOAT_TYPE_ARB:
245 return (config->renderType & GLX_RGBA_FLOAT_BIT_ARB) != 0;
246 case GLX_RGBA_UNSIGNED_FLOAT_TYPE_EXT:
247 return (config->renderType & GLX_RGBA_UNSIGNED_FLOAT_BIT_EXT) != 0;
255 glx_context_init(struct glx_context *gc,
256 struct glx_screen *psc, struct glx_config *config)
258 gc->majorOpcode = __glXSetupForCommand(psc->display->dpy);
259 if (!gc->majorOpcode)
262 gc->screen = psc->scr;
265 gc->isDirect = GL_TRUE;
266 gc->currentContextTag = -1;
273 * Create a new context.
275 * \param renderType For FBConfigs, what is the rendering type?
279 CreateContext(Display *dpy, int generic_id, struct glx_config *config,
280 GLXContext shareList_user, Bool allowDirect,
281 unsigned code, int renderType, int screen)
283 struct glx_context *gc;
284 struct glx_screen *psc;
285 struct glx_context *shareList = (struct glx_context *) shareList_user;
289 psc = GetGLXScreenConfigs(dpy, screen);
293 if (generic_id == None)
297 #ifdef GLX_USE_APPLEGL
298 gc = applegl_create_context(psc, config, shareList, renderType);
300 if (allowDirect && psc->vtable->create_context)
301 gc = psc->vtable->create_context(psc, config, shareList, renderType);
303 gc = indirect_create_context(psc, config, shareList, renderType);
310 case X_GLXCreateContext: {
311 xGLXCreateContextReq *req;
313 /* Send the glXCreateContext request */
314 GetReq(GLXCreateContext, req);
315 req->reqType = gc->majorOpcode;
316 req->glxCode = X_GLXCreateContext;
317 req->context = gc->xid = XAllocID(dpy);
318 req->visual = generic_id;
319 req->screen = screen;
320 req->shareList = shareList ? shareList->xid : None;
321 req->isDirect = gc->isDirect;
325 case X_GLXCreateNewContext: {
326 xGLXCreateNewContextReq *req;
328 /* Send the glXCreateNewContext request */
329 GetReq(GLXCreateNewContext, req);
330 req->reqType = gc->majorOpcode;
331 req->glxCode = X_GLXCreateNewContext;
332 req->context = gc->xid = XAllocID(dpy);
333 req->fbconfig = generic_id;
334 req->screen = screen;
335 req->renderType = renderType;
336 req->shareList = shareList ? shareList->xid : None;
337 req->isDirect = gc->isDirect;
341 case X_GLXvop_CreateContextWithConfigSGIX: {
342 xGLXVendorPrivateWithReplyReq *vpreq;
343 xGLXCreateContextWithConfigSGIXReq *req;
345 /* Send the glXCreateNewContext request */
346 GetReqExtra(GLXVendorPrivateWithReply,
347 sz_xGLXCreateContextWithConfigSGIXReq -
348 sz_xGLXVendorPrivateWithReplyReq, vpreq);
349 req = (xGLXCreateContextWithConfigSGIXReq *) vpreq;
350 req->reqType = gc->majorOpcode;
351 req->glxCode = X_GLXVendorPrivateWithReply;
352 req->vendorCode = X_GLXvop_CreateContextWithConfigSGIX;
353 req->context = gc->xid = XAllocID(dpy);
354 req->fbconfig = generic_id;
355 req->screen = screen;
356 req->renderType = renderType;
357 req->shareList = shareList ? shareList->xid : None;
358 req->isDirect = gc->isDirect;
363 /* What to do here? This case is the sign of an internal error. It
364 * should never be reachable.
372 gc->share_xid = shareList ? shareList->xid : None;
373 gc->imported = GL_FALSE;
375 return (GLXContext) gc;
379 glXCreateContext(Display * dpy, XVisualInfo * vis,
380 GLXContext shareList, Bool allowDirect)
382 struct glx_config *config = NULL;
383 int renderType = GLX_RGBA_TYPE;
385 #if defined(GLX_DIRECT_RENDERING) || defined(GLX_USE_APPLEGL)
386 struct glx_screen *const psc = GetGLXScreenConfigs(dpy, vis->screen);
388 config = glx_config_find_visual(psc->visuals, vis->visualid);
389 if (config == NULL) {
392 error.errorCode = BadValue;
393 error.resourceID = vis->visualid;
394 error.sequenceNumber = dpy->request;
395 error.type = X_Error;
396 error.majorCode = __glXSetupForCommand(dpy);
397 error.minorCode = X_GLXCreateContext;
398 _XError(dpy, &error);
402 /* Choose the context render type based on DRI config values. It is
403 * unusual to set this type from config, but we have no other choice, as
404 * this old API does not provide renderType parameter.
406 if (config->renderType & GLX_RGBA_FLOAT_BIT_ARB) {
407 renderType = GLX_RGBA_FLOAT_TYPE_ARB;
408 } else if (config->renderType & GLX_RGBA_UNSIGNED_FLOAT_BIT_EXT) {
409 renderType = GLX_RGBA_UNSIGNED_FLOAT_TYPE_EXT;
410 } else if (config->renderType & GLX_RGBA_BIT) {
411 renderType = GLX_RGBA_TYPE;
412 } else if (config->renderType & GLX_COLOR_INDEX_BIT) {
413 renderType = GLX_COLOR_INDEX_TYPE;
414 } else if (config->rgbMode) {
415 /* If we're here, then renderType is not set correctly. Let's use a
416 * safeguard - any TrueColor or DirectColor mode is RGB mode. Such
417 * default value is needed by old DRI drivers, which didn't set
418 * renderType correctly as the value was just ignored.
420 renderType = GLX_RGBA_TYPE;
422 /* Safeguard - only one option left, all non-RGB modes are indexed
423 * modes. Again, this allows drivers with invalid renderType to work
426 renderType = GLX_COLOR_INDEX_TYPE;
430 return CreateContext(dpy, vis->visualid, config, shareList, allowDirect,
431 X_GLXCreateContext, renderType, vis->screen);
435 glx_send_destroy_context(Display *dpy, XID xid)
437 CARD8 opcode = __glXSetupForCommand(dpy);
438 xGLXDestroyContextReq *req;
441 GetReq(GLXDestroyContext, req);
442 req->reqType = opcode;
443 req->glxCode = X_GLXDestroyContext;
450 ** Destroy the named context
454 glXDestroyContext(Display * dpy, GLXContext ctx)
456 struct glx_context *gc = (struct glx_context *) ctx;
458 if (gc == NULL || gc->xid == None)
463 glx_send_destroy_context(dpy, gc->xid);
465 if (gc->currentDpy) {
466 /* This context is bound to some thread. According to the man page,
467 * we should not actually delete the context until it's unbound.
468 * Note that we set gc->xid = None above. In MakeContextCurrent()
469 * we check for that and delete the context there.
473 gc->vtable->destroy(gc);
479 ** Return the major and minor version #s for the GLX extension
482 glXQueryVersion(Display * dpy, int *major, int *minor)
484 struct glx_display *priv;
486 /* Init the extension. This fetches the major and minor version. */
487 priv = __glXInitialize(dpy);
492 *major = priv->majorVersion;
494 *minor = priv->minorVersion;
499 ** Query the existance of the GLX extension
502 glXQueryExtension(Display * dpy, int *errorBase, int *eventBase)
504 int major_op, erb, evb;
507 rv = XQueryExtension(dpy, GLX_EXTENSION_NAME, &major_op, &evb, &erb);
518 ** Put a barrier in the token stream that forces the GL to finish its
519 ** work before X can proceed.
524 struct glx_context *gc = __glXGetCurrentContext();
526 if (gc && gc->vtable->wait_gl)
527 gc->vtable->wait_gl(gc);
531 ** Put a barrier in the token stream that forces X to finish its
532 ** work before GL can proceed.
537 struct glx_context *gc = __glXGetCurrentContext();
539 if (gc && gc->vtable->wait_x)
540 gc->vtable->wait_x(gc);
544 glXUseXFont(Font font, int first, int count, int listBase)
546 struct glx_context *gc = __glXGetCurrentContext();
548 if (gc && gc->vtable->use_x_font)
549 gc->vtable->use_x_font(gc, font, first, count, listBase);
552 /************************************************************************/
555 ** Copy the source context to the destination context using the
559 glXCopyContext(Display * dpy, GLXContext source_user,
560 GLXContext dest_user, unsigned long mask)
562 struct glx_context *source = (struct glx_context *) source_user;
563 struct glx_context *dest = (struct glx_context *) dest_user;
564 #ifdef GLX_USE_APPLEGL
565 struct glx_context *gc = __glXGetCurrentContext();
569 if(apple_glx_copy_context(gc->driContext, source->driContext, dest->driContext,
570 mask, &errorcode, &x11error)) {
571 __glXSendError(dpy, errorcode, 0, X_GLXCopyContext, x11error);
575 xGLXCopyContextReq *req;
576 struct glx_context *gc = __glXGetCurrentContext();
580 opcode = __glXSetupForCommand(dpy);
585 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
587 /* NOT_DONE: This does not work yet */
592 ** If the source is the current context, send its tag so that the context
593 ** can be flushed before the copy.
595 if (source == gc && dpy == gc->currentDpy) {
596 tag = gc->currentContextTag;
602 /* Send the glXCopyContext request */
604 GetReq(GLXCopyContext, req);
605 req->reqType = opcode;
606 req->glxCode = X_GLXCopyContext;
607 req->source = source ? source->xid : None;
608 req->dest = dest ? dest->xid : None;
610 req->contextTag = tag;
613 #endif /* GLX_USE_APPLEGL */
618 * Determine if a context uses direct rendering.
620 * \param dpy Display where the context was created.
621 * \param contextID ID of the context to be tested.
623 * \returns \c True if the context is direct rendering or not.
626 __glXIsDirect(Display * dpy, GLXContextID contextID)
630 xcb_generic_error_t *err;
631 xcb_glx_is_direct_reply_t *reply;
634 opcode = __glXSetupForCommand(dpy);
639 c = XGetXCBConnection(dpy);
640 reply = xcb_glx_is_direct_reply(c, xcb_glx_is_direct(c, contextID), &err);
641 is_direct = (reply != NULL && reply->is_direct) ? True : False;
644 __glXSendErrorForXcb(dpy, err);
655 * Shouldn't this function \b always return \c False when
656 * \c GLX_DIRECT_RENDERING is not defined? Do we really need to bother with
657 * the GLX protocol here at all?
660 glXIsDirect(Display * dpy, GLXContext gc_user)
662 struct glx_context *gc = (struct glx_context *) gc_user;
667 else if (gc->isDirect) {
670 #ifdef GLX_USE_APPLEGL /* TODO: indirect on darwin */
673 return __glXIsDirect(dpy, gc->xid);
678 glXCreateGLXPixmap(Display * dpy, XVisualInfo * vis, Pixmap pixmap)
680 #ifdef GLX_USE_APPLEGL
681 int screen = vis->screen;
682 struct glx_screen *const psc = GetGLXScreenConfigs(dpy, screen);
683 const struct glx_config *config;
685 config = glx_config_find_visual(psc->visuals, vis->visualid);
687 if(apple_glx_pixmap_create(dpy, vis->screen, pixmap, config))
692 xGLXCreateGLXPixmapReq *req;
693 struct glx_drawable *glxDraw;
697 opcode = __glXSetupForCommand(dpy);
702 glxDraw = malloc(sizeof(*glxDraw));
706 /* Send the glXCreateGLXPixmap request */
708 GetReq(GLXCreateGLXPixmap, req);
709 req->reqType = opcode;
710 req->glxCode = X_GLXCreateGLXPixmap;
711 req->screen = vis->screen;
712 req->visual = vis->visualid;
713 req->pixmap = pixmap;
714 req->glxpixmap = xid = XAllocID(dpy);
718 if (InitGLXDrawable(dpy, glxDraw, pixmap, req->glxpixmap)) {
723 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
725 /* FIXME: Maybe delay __DRIdrawable creation until the drawable
726 * is actually bound to a context... */
728 struct glx_display *const priv = __glXInitialize(dpy);
729 __GLXDRIdrawable *pdraw;
730 struct glx_screen *psc;
731 struct glx_config *config;
733 psc = priv->screens[vis->screen];
734 if (psc->driScreen == NULL)
737 config = glx_config_find_visual(psc->visuals, vis->visualid);
738 pdraw = psc->driScreen->createDrawable(psc, pixmap, xid, config);
740 fprintf(stderr, "failed to create pixmap\n");
745 if (__glxHashInsert(priv->drawHash, xid, pdraw)) {
746 (*pdraw->destroyDrawable) (pdraw);
753 xGLXDestroyGLXPixmapReq *dreq;
755 GetReq(GLXDestroyGLXPixmap, dreq);
756 dreq->reqType = opcode;
757 dreq->glxCode = X_GLXDestroyGLXPixmap;
758 dreq->glxpixmap = xid;
769 ** Destroy the named pixmap
772 glXDestroyGLXPixmap(Display * dpy, GLXPixmap glxpixmap)
774 #ifdef GLX_USE_APPLEGL
775 if(apple_glx_pixmap_destroy(dpy, glxpixmap))
776 __glXSendError(dpy, GLXBadPixmap, glxpixmap, X_GLXDestroyPixmap, false);
778 xGLXDestroyGLXPixmapReq *req;
781 opcode = __glXSetupForCommand(dpy);
786 /* Send the glXDestroyGLXPixmap request */
788 GetReq(GLXDestroyGLXPixmap, req);
789 req->reqType = opcode;
790 req->glxCode = X_GLXDestroyGLXPixmap;
791 req->glxpixmap = glxpixmap;
795 DestroyGLXDrawable(dpy, glxpixmap);
797 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
799 struct glx_display *const priv = __glXInitialize(dpy);
800 __GLXDRIdrawable *pdraw = GetGLXDRIDrawable(dpy, glxpixmap);
803 (*pdraw->destroyDrawable) (pdraw);
804 __glxHashDelete(priv->drawHash, glxpixmap);
808 #endif /* GLX_USE_APPLEGL */
812 glXSwapBuffers(Display * dpy, GLXDrawable drawable)
814 #ifdef GLX_USE_APPLEGL
815 struct glx_context * gc = __glXGetCurrentContext();
816 if(gc && apple_glx_is_current_drawable(dpy, gc->driContext, drawable)) {
817 apple_glx_swap_buffers(gc->driContext);
819 __glXSendError(dpy, GLXBadCurrentWindow, 0, X_GLXSwapBuffers, false);
822 struct glx_context *gc;
827 gc = __glXGetCurrentContext();
829 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
831 __GLXDRIdrawable *pdraw = GetGLXDRIDrawable(dpy, drawable);
834 Bool flush = gc && drawable == gc->currentDrawable;
836 (*pdraw->psc->driScreen->swapBuffers)(pdraw, 0, 0, 0, flush);
842 opcode = __glXSetupForCommand(dpy);
848 ** The calling thread may or may not have a current context. If it
849 ** does, send the context tag so the server can do a flush.
851 if ((gc != NULL) && (dpy == gc->currentDpy) &&
852 ((drawable == gc->currentDrawable)
853 || (drawable == gc->currentReadable))) {
854 tag = gc->currentContextTag;
860 c = XGetXCBConnection(dpy);
861 xcb_glx_swap_buffers(c, tag, drawable);
863 #endif /* GLX_USE_APPLEGL */
868 ** Return configuration information for the given display, screen and
869 ** visual combination.
872 glXGetConfig(Display * dpy, XVisualInfo * vis, int attribute,
875 struct glx_display *priv;
876 struct glx_screen *psc;
877 struct glx_config *config;
880 status = GetGLXPrivScreenConfig(dpy, vis->screen, &priv, &psc);
881 if (status == Success) {
882 config = glx_config_find_visual(psc->visuals, vis->visualid);
884 /* Lookup attribute after first finding a match on the visual */
885 if (config != NULL) {
886 return glx_config_get(config, attribute, value_return);
889 status = GLX_BAD_VISUAL;
893 ** If we can't find the config for this visual, this visual is not
894 ** supported by the OpenGL implementation on the server.
896 if ((status == GLX_BAD_VISUAL) && (attribute == GLX_USE_GL)) {
897 *value_return = False;
904 /************************************************************************/
907 init_fbconfig_for_chooser(struct glx_config * config,
908 GLboolean fbconfig_style_tags)
910 memset(config, 0, sizeof(struct glx_config));
911 config->visualID = (XID) GLX_DONT_CARE;
912 config->visualType = GLX_DONT_CARE;
914 /* glXChooseFBConfig specifies different defaults for these properties than
917 if (fbconfig_style_tags) {
918 config->rgbMode = GL_TRUE;
919 config->doubleBufferMode = GLX_DONT_CARE;
920 /* allow any kind of drawable, including those for off-screen buffers */
921 config->drawableType = 0;
923 /* allow configs which support on-screen drawing */
924 config->drawableType = GLX_WINDOW_BIT;
927 config->visualRating = GLX_DONT_CARE;
928 config->transparentPixel = GLX_NONE;
929 config->transparentRed = GLX_DONT_CARE;
930 config->transparentGreen = GLX_DONT_CARE;
931 config->transparentBlue = GLX_DONT_CARE;
932 config->transparentAlpha = GLX_DONT_CARE;
933 config->transparentIndex = GLX_DONT_CARE;
935 /* Set GLX_RENDER_TYPE property to not expect any flags by default. */
936 config->renderType = 0;
937 config->xRenderable = GLX_DONT_CARE;
938 config->fbconfigID = (GLXFBConfigID) (GLX_DONT_CARE);
940 config->swapMethod = GLX_DONT_CARE;
943 #define MATCH_DONT_CARE( param ) \
945 if ( ((int) a-> param != (int) GLX_DONT_CARE) \
946 && (a-> param != b-> param) ) { \
951 #define MATCH_MINIMUM( param ) \
953 if ( ((int) a-> param != (int) GLX_DONT_CARE) \
954 && (a-> param > b-> param) ) { \
959 #define MATCH_EXACT( param ) \
961 if ( a-> param != b-> param) { \
966 /* Test that all bits from a are contained in b */
967 #define MATCH_MASK(param) \
969 if ( ((int) a-> param != (int) GLX_DONT_CARE) \
970 && ((a->param & ~b->param) != 0) ) { \
976 * Determine if two GLXFBConfigs are compatible.
978 * \param a Application specified config to test.
979 * \param b Server specified config to test against \c a.
982 fbconfigs_compatible(const struct glx_config * const a,
983 const struct glx_config * const b)
985 MATCH_DONT_CARE(doubleBufferMode);
986 MATCH_DONT_CARE(visualType);
987 MATCH_DONT_CARE(visualRating);
988 MATCH_DONT_CARE(xRenderable);
989 MATCH_DONT_CARE(fbconfigID);
990 MATCH_DONT_CARE(swapMethod);
992 MATCH_MINIMUM(rgbBits);
993 MATCH_MINIMUM(numAuxBuffers);
994 MATCH_MINIMUM(redBits);
995 MATCH_MINIMUM(greenBits);
996 MATCH_MINIMUM(blueBits);
997 MATCH_MINIMUM(alphaBits);
998 MATCH_MINIMUM(depthBits);
999 MATCH_MINIMUM(stencilBits);
1000 MATCH_MINIMUM(accumRedBits);
1001 MATCH_MINIMUM(accumGreenBits);
1002 MATCH_MINIMUM(accumBlueBits);
1003 MATCH_MINIMUM(accumAlphaBits);
1004 MATCH_MINIMUM(sampleBuffers);
1005 MATCH_MINIMUM(maxPbufferWidth);
1006 MATCH_MINIMUM(maxPbufferHeight);
1007 MATCH_MINIMUM(maxPbufferPixels);
1008 MATCH_MINIMUM(samples);
1010 MATCH_DONT_CARE(stereoMode);
1013 MATCH_MASK(drawableType);
1014 MATCH_MASK(renderType);
1016 /* There is a bug in a few of the XFree86 DDX drivers. They contain
1017 * visuals with a "transparent type" of 0 when they really mean GLX_NONE.
1018 * Technically speaking, it is a bug in the DDX driver, but there is
1019 * enough of an installed base to work around the problem here. In any
1020 * case, 0 is not a valid value of the transparent type, so we'll treat 0
1021 * from the app as GLX_DONT_CARE. We'll consider GLX_NONE from the app and
1022 * 0 from the server to be a match to maintain backward compatibility with
1023 * the (broken) drivers.
1026 if (a->transparentPixel != (int) GLX_DONT_CARE && a->transparentPixel != 0) {
1027 if (a->transparentPixel == GLX_NONE) {
1028 if (b->transparentPixel != GLX_NONE && b->transparentPixel != 0)
1032 MATCH_EXACT(transparentPixel);
1035 switch (a->transparentPixel) {
1036 case GLX_TRANSPARENT_RGB:
1037 MATCH_DONT_CARE(transparentRed);
1038 MATCH_DONT_CARE(transparentGreen);
1039 MATCH_DONT_CARE(transparentBlue);
1040 MATCH_DONT_CARE(transparentAlpha);
1043 case GLX_TRANSPARENT_INDEX:
1044 MATCH_DONT_CARE(transparentIndex);
1056 /* There's some trickly language in the GLX spec about how this is supposed
1057 * to work. Basically, if a given component size is either not specified
1058 * or the requested size is zero, it is supposed to act like PERFER_SMALLER.
1059 * Well, that's really hard to do with the code as-is. This behavior is
1060 * closer to correct, but still not technically right.
1062 #define PREFER_LARGER_OR_ZERO(comp) \
1064 if ( ((*a)-> comp) != ((*b)-> comp) ) { \
1065 if ( ((*a)-> comp) == 0 ) { \
1068 else if ( ((*b)-> comp) == 0 ) { \
1072 return ((*b)-> comp) - ((*a)-> comp) ; \
1077 #define PREFER_LARGER(comp) \
1079 if ( ((*a)-> comp) != ((*b)-> comp) ) { \
1080 return ((*b)-> comp) - ((*a)-> comp) ; \
1084 #define PREFER_SMALLER(comp) \
1086 if ( ((*a)-> comp) != ((*b)-> comp) ) { \
1087 return ((*a)-> comp) - ((*b)-> comp) ; \
1092 * Compare two GLXFBConfigs. This function is intended to be used as the
1093 * compare function passed in to qsort.
1095 * \returns If \c a is a "better" config, according to the specification of
1096 * SGIX_fbconfig, a number less than zero is returned. If \c b is
1097 * better, then a number greater than zero is return. If both are
1098 * equal, zero is returned.
1099 * \sa qsort, glXChooseVisual, glXChooseFBConfig, glXChooseFBConfigSGIX
1102 fbconfig_compare(struct glx_config **a, struct glx_config **b)
1104 /* The order of these comparisons must NOT change. It is defined by
1105 * the GLX 1.3 spec and ARB_multisample.
1108 PREFER_SMALLER(visualSelectGroup);
1110 /* The sort order for the visualRating is GLX_NONE, GLX_SLOW, and
1111 * GLX_NON_CONFORMANT_CONFIG. It just so happens that this is the
1112 * numerical sort order of the enums (0x8000, 0x8001, and 0x800D).
1114 PREFER_SMALLER(visualRating);
1116 /* This isn't quite right. It is supposed to compare the sum of the
1117 * components the user specifically set minimums for.
1119 PREFER_LARGER_OR_ZERO(redBits);
1120 PREFER_LARGER_OR_ZERO(greenBits);
1121 PREFER_LARGER_OR_ZERO(blueBits);
1122 PREFER_LARGER_OR_ZERO(alphaBits);
1124 PREFER_SMALLER(rgbBits);
1126 if (((*a)->doubleBufferMode != (*b)->doubleBufferMode)) {
1127 /* Prefer single-buffer.
1129 return (!(*a)->doubleBufferMode) ? -1 : 1;
1132 PREFER_SMALLER(numAuxBuffers);
1134 PREFER_LARGER_OR_ZERO(depthBits);
1135 PREFER_SMALLER(stencilBits);
1137 /* This isn't quite right. It is supposed to compare the sum of the
1138 * components the user specifically set minimums for.
1140 PREFER_LARGER_OR_ZERO(accumRedBits);
1141 PREFER_LARGER_OR_ZERO(accumGreenBits);
1142 PREFER_LARGER_OR_ZERO(accumBlueBits);
1143 PREFER_LARGER_OR_ZERO(accumAlphaBits);
1145 PREFER_SMALLER(visualType);
1147 /* None of the multisample specs say where this comparison should happen,
1148 * so I put it near the end.
1150 PREFER_SMALLER(sampleBuffers);
1151 PREFER_SMALLER(samples);
1153 /* None of the pbuffer or fbconfig specs say that this comparison needs
1154 * to happen at all, but it seems like it should.
1156 PREFER_LARGER(maxPbufferWidth);
1157 PREFER_LARGER(maxPbufferHeight);
1158 PREFER_LARGER(maxPbufferPixels);
1165 * Selects and sorts a subset of the supplied configs based on the attributes.
1166 * This function forms to basis of \c glXChooseVisual, \c glXChooseFBConfig,
1167 * and \c glXChooseFBConfigSGIX.
1169 * \param configs Array of pointers to possible configs. The elements of
1170 * this array that do not meet the criteria will be set to
1171 * NULL. The remaining elements will be sorted according to
1172 * the various visual / FBConfig selection rules.
1173 * \param num_configs Number of elements in the \c configs array.
1174 * \param attribList Attributes used select from \c configs. This array is
1175 * terminated by a \c None tag. The array can either take
1176 * the form expected by \c glXChooseVisual (where boolean
1177 * tags do not have a value) or by \c glXChooseFBConfig
1178 * (where every tag has a value).
1179 * \param fbconfig_style_tags Selects whether \c attribList is in
1180 * \c glXChooseVisual style or
1181 * \c glXChooseFBConfig style.
1182 * \returns The number of valid elements left in \c configs.
1184 * \sa glXChooseVisual, glXChooseFBConfig, glXChooseFBConfigSGIX
1187 choose_visual(struct glx_config ** configs, int num_configs,
1188 const int *attribList, GLboolean fbconfig_style_tags)
1190 struct glx_config test_config;
1194 /* This is a fairly direct implementation of the selection method
1195 * described by GLX_SGIX_fbconfig. Start by culling out all the
1196 * configs that are not compatible with the selected parameter
1200 init_fbconfig_for_chooser(&test_config, fbconfig_style_tags);
1201 __glXInitializeVisualConfigFromTags(&test_config, 512,
1202 (const INT32 *) attribList,
1203 GL_TRUE, fbconfig_style_tags);
1206 for (i = 0; i < num_configs; i++) {
1207 if (fbconfigs_compatible(&test_config, configs[i])) {
1208 configs[base] = configs[i];
1217 if (base < num_configs) {
1218 (void) memset(&configs[base], 0, sizeof(void *) * (num_configs - base));
1221 /* After the incompatible configs are removed, the resulting
1222 * list is sorted according to the rules set out in the various
1226 qsort(configs, base, sizeof(struct glx_config *),
1227 (int (*)(const void *, const void *)) fbconfig_compare);
1235 ** Return the visual that best matches the template. Return None if no
1236 ** visual matches the template.
1238 _X_EXPORT XVisualInfo *
1239 glXChooseVisual(Display * dpy, int screen, int *attribList)
1241 XVisualInfo *visualList = NULL;
1242 struct glx_display *priv;
1243 struct glx_screen *psc;
1244 struct glx_config test_config;
1245 struct glx_config *config;
1246 struct glx_config *best_config = NULL;
1249 ** Get a list of all visuals, return if list is empty
1251 if (GetGLXPrivScreenConfig(dpy, screen, &priv, &psc) != Success) {
1257 ** Build a template from the defaults and the attribute list
1258 ** Free visual list and return if an unexpected token is encountered
1260 init_fbconfig_for_chooser(&test_config, GL_FALSE);
1261 __glXInitializeVisualConfigFromTags(&test_config, 512,
1262 (const INT32 *) attribList,
1266 ** Eliminate visuals that don't meet minimum requirements
1267 ** Compute a score for those that do
1268 ** Remember which visual, if any, got the highest score
1269 ** If no visual is acceptable, return None
1270 ** Otherwise, create an XVisualInfo list with just the selected X visual
1273 for (config = psc->visuals; config != NULL; config = config->next) {
1274 if (fbconfigs_compatible(&test_config, config)
1275 && ((best_config == NULL) ||
1276 (fbconfig_compare (&config, &best_config) < 0))) {
1277 XVisualInfo visualTemplate;
1278 XVisualInfo *newList;
1281 visualTemplate.screen = screen;
1282 visualTemplate.visualid = config->visualID;
1283 newList = XGetVisualInfo(dpy, VisualScreenMask | VisualIDMask,
1284 &visualTemplate, &i);
1288 visualList = newList;
1289 best_config = config;
1294 #ifdef GLX_USE_APPLEGL
1295 if(visualList && getenv("LIBGL_DUMP_VISUALID")) {
1296 printf("visualid 0x%lx\n", visualList[0].visualid);
1304 _X_EXPORT const char *
1305 glXQueryExtensionsString(Display * dpy, int screen)
1307 struct glx_screen *psc;
1308 struct glx_display *priv;
1310 if (GetGLXPrivScreenConfig(dpy, screen, &priv, &psc) != Success) {
1314 if (!psc->effectiveGLXexts) {
1315 if (!psc->serverGLXexts) {
1316 psc->serverGLXexts =
1317 __glXQueryServerString(dpy, priv->majorOpcode, screen,
1321 __glXCalculateUsableExtensions(psc,
1322 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
1323 (psc->driScreen != NULL),
1327 priv->minorVersion);
1330 return psc->effectiveGLXexts;
1333 _X_EXPORT const char *
1334 glXGetClientString(Display * dpy, int name)
1340 return (__glXGLXClientVendorName);
1342 return (__glXGLXClientVersion);
1343 case GLX_EXTENSIONS:
1344 return (__glXGetClientExtensions());
1350 _X_EXPORT const char *
1351 glXQueryServerString(Display * dpy, int screen, int name)
1353 struct glx_screen *psc;
1354 struct glx_display *priv;
1358 if (GetGLXPrivScreenConfig(dpy, screen, &priv, &psc) != Success) {
1364 str = &priv->serverGLXvendor;
1367 str = &priv->serverGLXversion;
1369 case GLX_EXTENSIONS:
1370 str = &psc->serverGLXexts;
1377 *str = __glXQueryServerString(dpy, priv->majorOpcode, screen, name);
1384 __glXClientInfo(Display * dpy, int opcode)
1386 char *ext_str = __glXGetClientGLExtensionString();
1387 int size = strlen(ext_str) + 1;
1389 xcb_connection_t *c = XGetXCBConnection(dpy);
1390 xcb_glx_client_info(c,
1391 GLX_MAJOR_VERSION, GLX_MINOR_VERSION, size, ext_str);
1398 ** EXT_import_context
1402 glXGetCurrentDisplay(void)
1404 struct glx_context *gc = __glXGetCurrentContext();
1407 return gc->currentDpy;
1411 GLX_ALIAS(Display *, glXGetCurrentDisplayEXT, (void), (),
1412 glXGetCurrentDisplay)
1414 #ifndef GLX_USE_APPLEGL
1415 _X_EXPORT GLXContext
1416 glXImportContextEXT(Display *dpy, GLXContextID contextID)
1418 struct glx_display *priv = __glXInitialize(dpy);
1419 struct glx_screen *psc = NULL;
1420 xGLXQueryContextReply reply;
1422 struct glx_context *ctx;
1424 /* This GLX implementation knows about 5 different properties, so
1425 * allow the server to send us one of each.
1427 int propList[5 * 2], *pProp, nPropListBytes;
1431 struct glx_config *mode;
1432 uint32_t fbconfigID = 0;
1433 uint32_t visualID = 0;
1434 uint32_t screen = 0;
1435 Bool got_screen = False;
1437 /* The GLX_EXT_import_context spec says:
1439 * "If <contextID> does not refer to a valid context, then a BadContext
1440 * error is generated; if <contextID> refers to direct rendering
1441 * context then no error is generated but glXImportContextEXT returns
1444 * If contextID is None, generate BadContext on the client-side. Other
1445 * sorts of invalid contexts will be detected by the server in the
1446 * __glXIsDirect call.
1448 if (contextID == None) {
1449 __glXSendError(dpy, GLXBadContext, contextID, X_GLXIsDirect, false);
1453 if (__glXIsDirect(dpy, contextID))
1456 opcode = __glXSetupForCommand(dpy);
1460 /* Send the glXQueryContextInfoEXT request */
1463 if (priv->majorVersion > 1 || priv->minorVersion >= 3) {
1464 xGLXQueryContextReq *req;
1466 GetReq(GLXQueryContext, req);
1468 req->reqType = opcode;
1469 req->glxCode = X_GLXQueryContext;
1470 req->context = contextID;
1473 xGLXVendorPrivateReq *vpreq;
1474 xGLXQueryContextInfoEXTReq *req;
1476 GetReqExtra(GLXVendorPrivate,
1477 sz_xGLXQueryContextInfoEXTReq - sz_xGLXVendorPrivateReq,
1479 req = (xGLXQueryContextInfoEXTReq *) vpreq;
1480 req->reqType = opcode;
1481 req->glxCode = X_GLXVendorPrivateWithReply;
1482 req->vendorCode = X_GLXvop_QueryContextInfoEXT;
1483 req->context = contextID;
1486 _XReply(dpy, (xReply *) & reply, 0, False);
1488 if (reply.n <= __GLX_MAX_CONTEXT_PROPS)
1489 nPropListBytes = reply.n * 2 * sizeof propList[0];
1492 _XRead(dpy, (char *) propList, nPropListBytes);
1496 numProps = nPropListBytes / (2 * sizeof(propList[0]));
1499 renderType = GLX_RGBA_TYPE; /* By default, assume RGBA context */
1502 for (i = 0, pProp = propList; i < numProps; i++, pProp += 2)
1508 case GLX_SHARE_CONTEXT_EXT:
1511 case GLX_VISUAL_ID_EXT:
1512 visualID = pProp[1];
1514 case GLX_FBCONFIG_ID:
1515 fbconfigID = pProp[1];
1517 case GLX_RENDER_TYPE:
1518 renderType = pProp[1];
1525 psc = GetGLXScreenConfigs(dpy, screen);
1529 if (fbconfigID != 0) {
1530 mode = glx_config_find_fbconfig(psc->configs, fbconfigID);
1531 } else if (visualID != 0) {
1532 mode = glx_config_find_visual(psc->visuals, visualID);
1538 ctx = indirect_create_context(psc, mode, NULL, renderType);
1542 ctx->xid = contextID;
1543 ctx->imported = GL_TRUE;
1544 ctx->share_xid = share;
1546 return (GLXContext) ctx;
1552 glXQueryContext(Display * dpy, GLXContext ctx_user, int attribute, int *value)
1554 struct glx_context *ctx = (struct glx_context *) ctx_user;
1556 switch (attribute) {
1557 case GLX_SHARE_CONTEXT_EXT:
1558 *value = ctx->share_xid;
1560 case GLX_VISUAL_ID_EXT:
1561 *value = ctx->config ? ctx->config->visualID : None;
1564 *value = ctx->screen;
1566 case GLX_FBCONFIG_ID:
1567 *value = ctx->config ? ctx->config->fbconfigID : None;
1569 case GLX_RENDER_TYPE:
1570 *value = ctx->renderType;
1573 return GLX_BAD_ATTRIBUTE;
1579 GLX_ALIAS(int, glXQueryContextInfoEXT,
1580 (Display * dpy, GLXContext ctx, int attribute, int *value),
1581 (dpy, ctx, attribute, value), glXQueryContext)
1583 _X_EXPORT GLXContextID glXGetContextIDEXT(const GLXContext ctx_user)
1585 struct glx_context *ctx = (struct glx_context *) ctx_user;
1587 return (ctx == NULL) ? None : ctx->xid;
1591 glXFreeContextEXT(Display *dpy, GLXContext ctx)
1593 struct glx_context *gc = (struct glx_context *) ctx;
1595 if (gc == NULL || gc->xid == None)
1598 /* The GLX_EXT_import_context spec says:
1600 * "glXFreeContext does not free the server-side context information or
1601 * the XID associated with the server-side context."
1603 * Don't send any protocol. Just destroy the client-side tracking of the
1604 * context. Also, only release the context structure if it's not current.
1607 if (gc->currentDpy) {
1610 gc->vtable->destroy(gc);
1615 _X_EXPORT GLXFBConfig *
1616 glXChooseFBConfig(Display * dpy, int screen,
1617 const int *attribList, int *nitems)
1619 struct glx_config **config_list;
1623 config_list = (struct glx_config **)
1624 glXGetFBConfigs(dpy, screen, &list_size);
1626 if ((config_list != NULL) && (list_size > 0) && (attribList != NULL)) {
1627 list_size = choose_visual(config_list, list_size, attribList, GL_TRUE);
1628 if (list_size == 0) {
1634 *nitems = list_size;
1635 return (GLXFBConfig *) config_list;
1639 _X_EXPORT GLXContext
1640 glXCreateNewContext(Display * dpy, GLXFBConfig fbconfig,
1641 int renderType, GLXContext shareList, Bool allowDirect)
1643 struct glx_config *config = (struct glx_config *) fbconfig;
1645 return CreateContext(dpy, config->fbconfigID, config, shareList,
1646 allowDirect, X_GLXCreateNewContext, renderType,
1651 _X_EXPORT GLXDrawable
1652 glXGetCurrentReadDrawable(void)
1654 struct glx_context *gc = __glXGetCurrentContext();
1656 return gc->currentReadable;
1660 _X_EXPORT GLXFBConfig *
1661 glXGetFBConfigs(Display * dpy, int screen, int *nelements)
1663 struct glx_display *priv = __glXInitialize(dpy);
1664 struct glx_config **config_list = NULL;
1665 struct glx_config *config;
1666 unsigned num_configs = 0;
1670 if (priv && (priv->screens != NULL)
1671 && (screen >= 0) && (screen <= ScreenCount(dpy))
1672 && (priv->screens[screen]->configs != NULL)
1673 && (priv->screens[screen]->configs->fbconfigID
1674 != (int) GLX_DONT_CARE)) {
1676 for (config = priv->screens[screen]->configs; config != NULL;
1677 config = config->next) {
1678 if (config->fbconfigID != (int) GLX_DONT_CARE) {
1683 config_list = malloc(num_configs * sizeof *config_list);
1684 if (config_list != NULL) {
1685 *nelements = num_configs;
1687 for (config = priv->screens[screen]->configs; config != NULL;
1688 config = config->next) {
1689 if (config->fbconfigID != (int) GLX_DONT_CARE) {
1690 config_list[i] = config;
1697 return (GLXFBConfig *) config_list;
1702 glXGetFBConfigAttrib(Display * dpy, GLXFBConfig fbconfig,
1703 int attribute, int *value)
1705 struct glx_config *config = ValidateGLXFBConfig(dpy, fbconfig);
1708 return GLXBadFBConfig;
1710 return glx_config_get(config, attribute, value);
1714 _X_EXPORT XVisualInfo *
1715 glXGetVisualFromFBConfig(Display * dpy, GLXFBConfig fbconfig)
1717 XVisualInfo visualTemplate;
1718 struct glx_config *config = (struct glx_config *) fbconfig;
1722 ** Get a list of all visuals, return if list is empty
1724 visualTemplate.visualid = config->visualID;
1725 return XGetVisualInfo(dpy, VisualIDMask, &visualTemplate, &count);
1728 #ifndef GLX_USE_APPLEGL
1730 ** GLX_SGI_swap_control
1733 __glXSwapIntervalSGI(int interval)
1735 xGLXVendorPrivateReq *req;
1736 struct glx_context *gc = __glXGetCurrentContext();
1737 struct glx_screen *psc;
1739 CARD32 *interval_ptr;
1743 return GLX_BAD_CONTEXT;
1746 if (interval <= 0) {
1747 return GLX_BAD_VALUE;
1750 psc = GetGLXScreenConfigs( gc->currentDpy, gc->screen);
1752 #ifdef GLX_DIRECT_RENDERING
1753 if (gc->isDirect && psc->driScreen && psc->driScreen->setSwapInterval) {
1754 __GLXDRIdrawable *pdraw =
1755 GetGLXDRIDrawable(gc->currentDpy, gc->currentDrawable);
1756 psc->driScreen->setSwapInterval(pdraw, interval);
1761 dpy = gc->currentDpy;
1762 opcode = __glXSetupForCommand(dpy);
1767 /* Send the glXSwapIntervalSGI request */
1769 GetReqExtra(GLXVendorPrivate, sizeof(CARD32), req);
1770 req->reqType = opcode;
1771 req->glxCode = X_GLXVendorPrivate;
1772 req->vendorCode = X_GLXvop_SwapIntervalSGI;
1773 req->contextTag = gc->currentContextTag;
1775 interval_ptr = (CARD32 *) (req + 1);
1776 *interval_ptr = interval;
1787 ** GLX_MESA_swap_control
1790 __glXSwapIntervalMESA(unsigned int interval)
1792 #ifdef GLX_DIRECT_RENDERING
1793 struct glx_context *gc = __glXGetCurrentContext();
1795 if (gc != NULL && gc->isDirect) {
1796 struct glx_screen *psc;
1798 psc = GetGLXScreenConfigs( gc->currentDpy, gc->screen);
1799 if (psc->driScreen && psc->driScreen->setSwapInterval) {
1800 __GLXDRIdrawable *pdraw =
1801 GetGLXDRIDrawable(gc->currentDpy, gc->currentDrawable);
1802 return psc->driScreen->setSwapInterval(pdraw, interval);
1807 return GLX_BAD_CONTEXT;
1812 __glXGetSwapIntervalMESA(void)
1814 #ifdef GLX_DIRECT_RENDERING
1815 struct glx_context *gc = __glXGetCurrentContext();
1817 if (gc != NULL && gc->isDirect) {
1818 struct glx_screen *psc;
1820 psc = GetGLXScreenConfigs( gc->currentDpy, gc->screen);
1821 if (psc->driScreen && psc->driScreen->getSwapInterval) {
1822 __GLXDRIdrawable *pdraw =
1823 GetGLXDRIDrawable(gc->currentDpy, gc->currentDrawable);
1824 return psc->driScreen->getSwapInterval(pdraw);
1834 ** GLX_SGI_video_sync
1837 __glXGetVideoSyncSGI(unsigned int *count)
1839 int64_t ust, msc, sbc;
1841 struct glx_context *gc = __glXGetCurrentContext();
1842 struct glx_screen *psc;
1843 #ifdef GLX_DIRECT_RENDERING
1844 __GLXDRIdrawable *pdraw;
1848 return GLX_BAD_CONTEXT;
1850 #ifdef GLX_DIRECT_RENDERING
1852 return GLX_BAD_CONTEXT;
1855 psc = GetGLXScreenConfigs(gc->currentDpy, gc->screen);
1856 #ifdef GLX_DIRECT_RENDERING
1857 pdraw = GetGLXDRIDrawable(gc->currentDpy, gc->currentDrawable);
1860 /* FIXME: Looking at the GLX_SGI_video_sync spec in the extension registry,
1861 * FIXME: there should be a GLX encoding for this call. I can find no
1862 * FIXME: documentation for the GLX encoding.
1864 #ifdef GLX_DIRECT_RENDERING
1865 if (psc->driScreen && psc->driScreen->getDrawableMSC) {
1866 ret = psc->driScreen->getDrawableMSC(psc, pdraw, &ust, &msc, &sbc);
1867 *count = (unsigned) msc;
1868 return (ret == True) ? 0 : GLX_BAD_CONTEXT;
1872 return GLX_BAD_CONTEXT;
1876 __glXWaitVideoSyncSGI(int divisor, int remainder, unsigned int *count)
1878 struct glx_context *gc = __glXGetCurrentContext();
1879 struct glx_screen *psc;
1880 #ifdef GLX_DIRECT_RENDERING
1881 __GLXDRIdrawable *pdraw;
1883 int64_t ust, msc, sbc;
1886 if (divisor <= 0 || remainder < 0)
1887 return GLX_BAD_VALUE;
1890 return GLX_BAD_CONTEXT;
1892 #ifdef GLX_DIRECT_RENDERING
1894 return GLX_BAD_CONTEXT;
1897 psc = GetGLXScreenConfigs( gc->currentDpy, gc->screen);
1898 #ifdef GLX_DIRECT_RENDERING
1899 pdraw = GetGLXDRIDrawable(gc->currentDpy, gc->currentDrawable);
1902 #ifdef GLX_DIRECT_RENDERING
1903 if (psc->driScreen && psc->driScreen->waitForMSC) {
1904 ret = psc->driScreen->waitForMSC(pdraw, 0, divisor, remainder, &ust, &msc,
1906 *count = (unsigned) msc;
1907 return (ret == True) ? 0 : GLX_BAD_CONTEXT;
1911 return GLX_BAD_CONTEXT;
1914 #endif /* GLX_USE_APPLEGL */
1917 ** GLX_SGIX_fbconfig
1918 ** Many of these functions are aliased to GLX 1.3 entry points in the
1919 ** GLX_functions table.
1923 GLX_ALIAS(int, glXGetFBConfigAttribSGIX,
1924 (Display * dpy, GLXFBConfigSGIX config, int attribute, int *value),
1925 (dpy, config, attribute, value), glXGetFBConfigAttrib)
1927 _X_EXPORT GLX_ALIAS(GLXFBConfigSGIX *, glXChooseFBConfigSGIX,
1928 (Display * dpy, int screen, int *attrib_list,
1929 int *nelements), (dpy, screen, attrib_list, nelements),
1932 _X_EXPORT GLX_ALIAS(XVisualInfo *, glXGetVisualFromFBConfigSGIX,
1933 (Display * dpy, GLXFBConfigSGIX config),
1934 (dpy, config), glXGetVisualFromFBConfig)
1937 glXCreateGLXPixmapWithConfigSGIX(Display * dpy,
1938 GLXFBConfigSGIX fbconfig,
1941 #ifndef GLX_USE_APPLEGL
1942 xGLXVendorPrivateWithReplyReq *vpreq;
1943 xGLXCreateGLXPixmapWithConfigSGIXReq *req;
1944 GLXPixmap xid = None;
1946 struct glx_screen *psc;
1948 struct glx_config *config = (struct glx_config *) fbconfig;
1951 if ((dpy == NULL) || (config == NULL)) {
1954 #ifdef GLX_USE_APPLEGL
1955 if(apple_glx_pixmap_create(dpy, config->screen, pixmap, config))
1960 psc = GetGLXScreenConfigs(dpy, config->screen);
1962 && __glXExtensionBitIsEnabled(psc, SGIX_fbconfig_bit)) {
1963 opcode = __glXSetupForCommand(dpy);
1968 /* Send the glXCreateGLXPixmapWithConfigSGIX request */
1970 GetReqExtra(GLXVendorPrivateWithReply,
1971 sz_xGLXCreateGLXPixmapWithConfigSGIXReq -
1972 sz_xGLXVendorPrivateWithReplyReq, vpreq);
1973 req = (xGLXCreateGLXPixmapWithConfigSGIXReq *) vpreq;
1974 req->reqType = opcode;
1975 req->glxCode = X_GLXVendorPrivateWithReply;
1976 req->vendorCode = X_GLXvop_CreateGLXPixmapWithConfigSGIX;
1977 req->screen = config->screen;
1978 req->fbconfig = config->fbconfigID;
1979 req->pixmap = pixmap;
1980 req->glxpixmap = xid = XAllocID(dpy);
1989 _X_EXPORT GLXContext
1990 glXCreateContextWithConfigSGIX(Display * dpy,
1991 GLXFBConfigSGIX fbconfig, int renderType,
1992 GLXContext shareList, Bool allowDirect)
1994 GLXContext gc = NULL;
1995 struct glx_config *config = (struct glx_config *) fbconfig;
1996 struct glx_screen *psc;
1999 if ((dpy == NULL) || (config == NULL)) {
2003 psc = GetGLXScreenConfigs(dpy, config->screen);
2005 && __glXExtensionBitIsEnabled(psc, SGIX_fbconfig_bit)) {
2006 gc = CreateContext(dpy, config->fbconfigID, config, shareList,
2008 X_GLXvop_CreateContextWithConfigSGIX, renderType,
2016 _X_EXPORT GLXFBConfigSGIX
2017 glXGetFBConfigFromVisualSGIX(Display * dpy, XVisualInfo * vis)
2019 struct glx_display *priv;
2020 struct glx_screen *psc = NULL;
2022 if ((GetGLXPrivScreenConfig(dpy, vis->screen, &priv, &psc) == Success)
2023 && __glXExtensionBitIsEnabled(psc, SGIX_fbconfig_bit)
2024 && (psc->configs->fbconfigID != (int) GLX_DONT_CARE)) {
2025 return (GLXFBConfigSGIX) glx_config_find_visual(psc->configs,
2032 #ifndef GLX_USE_APPLEGL
2034 ** GLX_SGIX_swap_group
2037 __glXJoinSwapGroupSGIX(Display * dpy, GLXDrawable drawable,
2047 ** GLX_SGIX_swap_barrier
2050 __glXBindSwapBarrierSGIX(Display * dpy, GLXDrawable drawable, int barrier)
2058 __glXQueryMaxSwapBarriersSGIX(Display * dpy, int screen, int *max)
2068 ** GLX_OML_sync_control
2071 __glXGetSyncValuesOML(Display * dpy, GLXDrawable drawable,
2072 int64_t * ust, int64_t * msc, int64_t * sbc)
2074 struct glx_display * const priv = __glXInitialize(dpy);
2076 #ifdef GLX_DIRECT_RENDERING
2077 __GLXDRIdrawable *pdraw;
2079 struct glx_screen *psc;
2084 #ifdef GLX_DIRECT_RENDERING
2085 pdraw = GetGLXDRIDrawable(dpy, drawable);
2086 psc = pdraw ? pdraw->psc : NULL;
2087 if (pdraw && psc->driScreen->getDrawableMSC) {
2088 ret = psc->driScreen->getDrawableMSC(psc, pdraw, ust, msc, sbc);
2096 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
2098 __glxGetMscRate(struct glx_screen *psc,
2099 int32_t * numerator, int32_t * denominator)
2102 XF86VidModeModeLine mode_line;
2106 if (XF86VidModeQueryVersion(psc->dpy, &i, &i) &&
2107 XF86VidModeGetModeLine(psc->dpy, psc->scr, &dot_clock, &mode_line)) {
2108 unsigned n = dot_clock * 1000;
2109 unsigned d = mode_line.vtotal * mode_line.htotal;
2111 # define V_INTERLACE 0x010
2112 # define V_DBLSCAN 0x020
2114 if (mode_line.flags & V_INTERLACE)
2116 else if (mode_line.flags & V_DBLSCAN)
2119 /* The OML_sync_control spec requires that if the refresh rate is a
2120 * whole number, that the returned numerator be equal to the refresh
2121 * rate and the denominator be 1.
2129 static const unsigned f[] = { 13, 11, 7, 5, 3, 2, 0 };
2131 /* This is a poor man's way to reduce a fraction. It's far from
2132 * perfect, but it will work well enough for this situation.
2135 for (i = 0; f[i] != 0; i++) {
2136 while (n % f[i] == 0 && d % f[i] == 0) {
2156 * Determine the refresh rate of the specified drawable and display.
2158 * \param dpy Display whose refresh rate is to be determined.
2159 * \param drawable Drawable whose refresh rate is to be determined.
2160 * \param numerator Numerator of the refresh rate.
2161 * \param demoninator Denominator of the refresh rate.
2162 * \return If the refresh rate for the specified display and drawable could
2163 * be calculated, True is returned. Otherwise False is returned.
2165 * \note This function is implemented entirely client-side. A lot of other
2166 * functionality is required to export GLX_OML_sync_control, so on
2167 * XFree86 this function can be called for direct-rendering contexts
2168 * when GLX_OML_sync_control appears in the client extension string.
2172 __glXGetMscRateOML(Display * dpy, GLXDrawable drawable,
2173 int32_t * numerator, int32_t * denominator)
2175 #if defined( GLX_DIRECT_RENDERING ) && defined( XF86VIDMODE )
2176 __GLXDRIdrawable *draw = GetGLXDRIDrawable(dpy, drawable);
2181 return __glxGetMscRate(draw->psc, numerator, denominator);
2193 __glXSwapBuffersMscOML(Display * dpy, GLXDrawable drawable,
2194 int64_t target_msc, int64_t divisor, int64_t remainder)
2196 struct glx_context *gc = __glXGetCurrentContext();
2197 #ifdef GLX_DIRECT_RENDERING
2198 __GLXDRIdrawable *pdraw = GetGLXDRIDrawable(dpy, drawable);
2199 struct glx_screen *psc = pdraw ? pdraw->psc : NULL;
2202 if (!gc) /* no GLX for this */
2205 #ifdef GLX_DIRECT_RENDERING
2206 if (!pdraw || !gc->isDirect)
2210 /* The OML_sync_control spec says these should "generate a GLX_BAD_VALUE
2211 * error", but it also says "It [glXSwapBuffersMscOML] will return a value
2212 * of -1 if the function failed because of errors detected in the input
2215 if (divisor < 0 || remainder < 0 || target_msc < 0)
2217 if (divisor > 0 && remainder >= divisor)
2220 if (target_msc == 0 && divisor == 0 && remainder == 0)
2223 #ifdef GLX_DIRECT_RENDERING
2224 if (psc->driScreen && psc->driScreen->swapBuffers)
2225 return (*psc->driScreen->swapBuffers)(pdraw, target_msc, divisor,
2234 __glXWaitForMscOML(Display * dpy, GLXDrawable drawable,
2235 int64_t target_msc, int64_t divisor,
2236 int64_t remainder, int64_t * ust,
2237 int64_t * msc, int64_t * sbc)
2239 #ifdef GLX_DIRECT_RENDERING
2240 __GLXDRIdrawable *pdraw = GetGLXDRIDrawable(dpy, drawable);
2241 struct glx_screen *psc = pdraw ? pdraw->psc : NULL;
2246 /* The OML_sync_control spec says these should "generate a GLX_BAD_VALUE
2247 * error", but the return type in the spec is Bool.
2249 if (divisor < 0 || remainder < 0 || target_msc < 0)
2251 if (divisor > 0 && remainder >= divisor)
2254 #ifdef GLX_DIRECT_RENDERING
2255 if (pdraw && psc->driScreen && psc->driScreen->waitForMSC) {
2256 ret = psc->driScreen->waitForMSC(pdraw, target_msc, divisor, remainder,
2267 __glXWaitForSbcOML(Display * dpy, GLXDrawable drawable,
2268 int64_t target_sbc, int64_t * ust,
2269 int64_t * msc, int64_t * sbc)
2271 #ifdef GLX_DIRECT_RENDERING
2272 __GLXDRIdrawable *pdraw = GetGLXDRIDrawable(dpy, drawable);
2273 struct glx_screen *psc = pdraw ? pdraw->psc : NULL;
2277 /* The OML_sync_control spec says this should "generate a GLX_BAD_VALUE
2278 * error", but the return type in the spec is Bool.
2283 #ifdef GLX_DIRECT_RENDERING
2284 if (pdraw && psc->driScreen && psc->driScreen->waitForSBC) {
2285 ret = psc->driScreen->waitForSBC(pdraw, target_sbc, ust, msc, sbc);
2297 * Mesa extension stubs. These will help reduce portability problems.
2302 * Release all buffers associated with the specified GLX drawable.
2305 * This function was intended for stand-alone Mesa. The issue there is that
2306 * the library doesn't get any notification when a window is closed. In
2307 * DRI there is a similar but slightly different issue. When GLX 1.3 is
2308 * supported, there are 3 different functions to destroy a drawable. It
2309 * should be possible to create GLX protocol (or have it determine which
2310 * protocol to use based on the type of the drawable) to have one function
2311 * do the work of 3. For the direct-rendering case, this function could
2312 * just call the driver's \c __DRIdrawableRec::destroyDrawable function.
2313 * This would reduce the frequency with which \c __driGarbageCollectDrawables
2314 * would need to be used. This really should be done as part of the new DRI
2317 * \sa http://oss.sgi.com/projects/ogl-sample/registry/MESA/release_buffers.txt
2318 * __driGarbageCollectDrawables
2319 * glXDestroyGLXPixmap
2320 * glXDestroyPbuffer glXDestroyPixmap glXDestroyWindow
2321 * glXDestroyGLXPbufferSGIX glXDestroyGLXVideoSourceSGIX
2324 __glXReleaseBuffersMESA(Display * dpy, GLXDrawable d)
2333 glXCreateGLXPixmapMESA(Display * dpy, XVisualInfo * visual,
2334 Pixmap pixmap, Colormap cmap)
2347 * GLX_MESA_copy_sub_buffer
2349 #define X_GLXvop_CopySubBufferMESA 5154 /* temporary */
2351 __glXCopySubBufferMESA(Display * dpy, GLXDrawable drawable,
2352 int x, int y, int width, int height)
2354 xGLXVendorPrivateReq *req;
2355 struct glx_context *gc;
2357 CARD32 *drawable_ptr;
2358 INT32 *x_ptr, *y_ptr, *w_ptr, *h_ptr;
2361 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
2362 __GLXDRIdrawable *pdraw = GetGLXDRIDrawable(dpy, drawable);
2363 if (pdraw != NULL) {
2364 struct glx_screen *psc = pdraw->psc;
2365 if (psc->driScreen->copySubBuffer != NULL) {
2366 (*psc->driScreen->copySubBuffer) (pdraw, x, y, width, height, True);
2373 opcode = __glXSetupForCommand(dpy);
2378 ** The calling thread may or may not have a current context. If it
2379 ** does, send the context tag so the server can do a flush.
2381 gc = __glXGetCurrentContext();
2382 if ((gc != NULL) && (dpy == gc->currentDpy) &&
2383 ((drawable == gc->currentDrawable) ||
2384 (drawable == gc->currentReadable))) {
2385 tag = gc->currentContextTag;
2392 GetReqExtra(GLXVendorPrivate, sizeof(CARD32) + sizeof(INT32) * 4, req);
2393 req->reqType = opcode;
2394 req->glxCode = X_GLXVendorPrivate;
2395 req->vendorCode = X_GLXvop_CopySubBufferMESA;
2396 req->contextTag = tag;
2398 drawable_ptr = (CARD32 *) (req + 1);
2399 x_ptr = (INT32 *) (drawable_ptr + 1);
2400 y_ptr = (INT32 *) (drawable_ptr + 2);
2401 w_ptr = (INT32 *) (drawable_ptr + 3);
2402 h_ptr = (INT32 *) (drawable_ptr + 4);
2404 *drawable_ptr = drawable;
2416 __glXBindTexImageEXT(Display * dpy,
2417 GLXDrawable drawable, int buffer, const int *attrib_list)
2419 struct glx_context *gc = __glXGetCurrentContext();
2421 if (gc == NULL || gc->vtable->bind_tex_image == NULL)
2424 gc->vtable->bind_tex_image(dpy, drawable, buffer, attrib_list);
2428 __glXReleaseTexImageEXT(Display * dpy, GLXDrawable drawable, int buffer)
2430 struct glx_context *gc = __glXGetCurrentContext();
2432 if (gc == NULL || gc->vtable->release_tex_image == NULL)
2435 gc->vtable->release_tex_image(dpy, drawable, buffer);
2440 #endif /* GLX_USE_APPLEGL */
2443 * \c strdup is actually not a standard ANSI C or POSIX routine.
2444 * Irix will not define it if ANSI mode is in effect.
2449 __glXstrdup(const char *str)
2452 copy = malloc(strlen(str) + 1);
2460 ** glXGetProcAddress support
2463 struct name_address_pair
2469 #define GLX_FUNCTION(f) { # f, (GLvoid *) f }
2470 #define GLX_FUNCTION2(n,f) { # n, (GLvoid *) f }
2472 static const struct name_address_pair GLX_functions[] = {
2473 /*** GLX_VERSION_1_0 ***/
2474 GLX_FUNCTION(glXChooseVisual),
2475 GLX_FUNCTION(glXCopyContext),
2476 GLX_FUNCTION(glXCreateContext),
2477 GLX_FUNCTION(glXCreateGLXPixmap),
2478 GLX_FUNCTION(glXDestroyContext),
2479 GLX_FUNCTION(glXDestroyGLXPixmap),
2480 GLX_FUNCTION(glXGetConfig),
2481 GLX_FUNCTION(glXGetCurrentContext),
2482 GLX_FUNCTION(glXGetCurrentDrawable),
2483 GLX_FUNCTION(glXIsDirect),
2484 GLX_FUNCTION(glXMakeCurrent),
2485 GLX_FUNCTION(glXQueryExtension),
2486 GLX_FUNCTION(glXQueryVersion),
2487 GLX_FUNCTION(glXSwapBuffers),
2488 GLX_FUNCTION(glXUseXFont),
2489 GLX_FUNCTION(glXWaitGL),
2490 GLX_FUNCTION(glXWaitX),
2492 /*** GLX_VERSION_1_1 ***/
2493 GLX_FUNCTION(glXGetClientString),
2494 GLX_FUNCTION(glXQueryExtensionsString),
2495 GLX_FUNCTION(glXQueryServerString),
2497 /*** GLX_VERSION_1_2 ***/
2498 GLX_FUNCTION(glXGetCurrentDisplay),
2500 /*** GLX_VERSION_1_3 ***/
2501 GLX_FUNCTION(glXChooseFBConfig),
2502 GLX_FUNCTION(glXCreateNewContext),
2503 GLX_FUNCTION(glXCreatePbuffer),
2504 GLX_FUNCTION(glXCreatePixmap),
2505 GLX_FUNCTION(glXCreateWindow),
2506 GLX_FUNCTION(glXDestroyPbuffer),
2507 GLX_FUNCTION(glXDestroyPixmap),
2508 GLX_FUNCTION(glXDestroyWindow),
2509 GLX_FUNCTION(glXGetCurrentReadDrawable),
2510 GLX_FUNCTION(glXGetFBConfigAttrib),
2511 GLX_FUNCTION(glXGetFBConfigs),
2512 GLX_FUNCTION(glXGetSelectedEvent),
2513 GLX_FUNCTION(glXGetVisualFromFBConfig),
2514 GLX_FUNCTION(glXMakeContextCurrent),
2515 GLX_FUNCTION(glXQueryContext),
2516 GLX_FUNCTION(glXQueryDrawable),
2517 GLX_FUNCTION(glXSelectEvent),
2519 #ifndef GLX_USE_APPLEGL
2520 /*** GLX_SGI_swap_control ***/
2521 GLX_FUNCTION2(glXSwapIntervalSGI, __glXSwapIntervalSGI),
2523 /*** GLX_SGI_video_sync ***/
2524 GLX_FUNCTION2(glXGetVideoSyncSGI, __glXGetVideoSyncSGI),
2525 GLX_FUNCTION2(glXWaitVideoSyncSGI, __glXWaitVideoSyncSGI),
2527 /*** GLX_SGI_make_current_read ***/
2528 GLX_FUNCTION2(glXMakeCurrentReadSGI, glXMakeContextCurrent),
2529 GLX_FUNCTION2(glXGetCurrentReadDrawableSGI, glXGetCurrentReadDrawable),
2531 /*** GLX_EXT_import_context ***/
2532 GLX_FUNCTION(glXFreeContextEXT),
2533 GLX_FUNCTION(glXGetContextIDEXT),
2534 GLX_FUNCTION2(glXGetCurrentDisplayEXT, glXGetCurrentDisplay),
2535 GLX_FUNCTION(glXImportContextEXT),
2536 GLX_FUNCTION2(glXQueryContextInfoEXT, glXQueryContext),
2539 /*** GLX_SGIX_fbconfig ***/
2540 GLX_FUNCTION2(glXGetFBConfigAttribSGIX, glXGetFBConfigAttrib),
2541 GLX_FUNCTION2(glXChooseFBConfigSGIX, glXChooseFBConfig),
2542 GLX_FUNCTION(glXCreateGLXPixmapWithConfigSGIX),
2543 GLX_FUNCTION(glXCreateContextWithConfigSGIX),
2544 GLX_FUNCTION2(glXGetVisualFromFBConfigSGIX, glXGetVisualFromFBConfig),
2545 GLX_FUNCTION(glXGetFBConfigFromVisualSGIX),
2547 #ifndef GLX_USE_APPLEGL
2548 /*** GLX_SGIX_pbuffer ***/
2549 GLX_FUNCTION(glXCreateGLXPbufferSGIX),
2550 GLX_FUNCTION(glXDestroyGLXPbufferSGIX),
2551 GLX_FUNCTION(glXQueryGLXPbufferSGIX),
2552 GLX_FUNCTION(glXSelectEventSGIX),
2553 GLX_FUNCTION(glXGetSelectedEventSGIX),
2555 /*** GLX_SGIX_swap_group ***/
2556 GLX_FUNCTION2(glXJoinSwapGroupSGIX, __glXJoinSwapGroupSGIX),
2558 /*** GLX_SGIX_swap_barrier ***/
2559 GLX_FUNCTION2(glXBindSwapBarrierSGIX, __glXBindSwapBarrierSGIX),
2560 GLX_FUNCTION2(glXQueryMaxSwapBarriersSGIX, __glXQueryMaxSwapBarriersSGIX),
2562 /*** GLX_MESA_copy_sub_buffer ***/
2563 GLX_FUNCTION2(glXCopySubBufferMESA, __glXCopySubBufferMESA),
2565 /*** GLX_MESA_pixmap_colormap ***/
2566 GLX_FUNCTION(glXCreateGLXPixmapMESA),
2568 /*** GLX_MESA_release_buffers ***/
2569 GLX_FUNCTION2(glXReleaseBuffersMESA, __glXReleaseBuffersMESA),
2571 /*** GLX_MESA_swap_control ***/
2572 GLX_FUNCTION2(glXSwapIntervalMESA, __glXSwapIntervalMESA),
2573 GLX_FUNCTION2(glXGetSwapIntervalMESA, __glXGetSwapIntervalMESA),
2576 /*** GLX_ARB_get_proc_address ***/
2577 GLX_FUNCTION(glXGetProcAddressARB),
2580 GLX_FUNCTION2(glXGetProcAddress, glXGetProcAddressARB),
2582 #ifndef GLX_USE_APPLEGL
2583 /*** GLX_OML_sync_control ***/
2584 GLX_FUNCTION2(glXWaitForSbcOML, __glXWaitForSbcOML),
2585 GLX_FUNCTION2(glXWaitForMscOML, __glXWaitForMscOML),
2586 GLX_FUNCTION2(glXSwapBuffersMscOML, __glXSwapBuffersMscOML),
2587 GLX_FUNCTION2(glXGetMscRateOML, __glXGetMscRateOML),
2588 GLX_FUNCTION2(glXGetSyncValuesOML, __glXGetSyncValuesOML),
2590 /*** GLX_EXT_texture_from_pixmap ***/
2591 GLX_FUNCTION2(glXBindTexImageEXT, __glXBindTexImageEXT),
2592 GLX_FUNCTION2(glXReleaseTexImageEXT, __glXReleaseTexImageEXT),
2595 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
2596 /*** DRI configuration ***/
2597 GLX_FUNCTION(glXGetScreenDriver),
2598 GLX_FUNCTION(glXGetDriverConfig),
2601 /*** GLX_ARB_create_context and GLX_ARB_create_context_profile ***/
2602 GLX_FUNCTION(glXCreateContextAttribsARB),
2604 /*** GLX_MESA_query_renderer ***/
2605 GLX_FUNCTION(glXQueryRendererIntegerMESA),
2606 GLX_FUNCTION(glXQueryRendererStringMESA),
2607 GLX_FUNCTION(glXQueryCurrentRendererIntegerMESA),
2608 GLX_FUNCTION(glXQueryCurrentRendererStringMESA),
2610 {NULL, NULL} /* end of list */
2613 static const GLvoid *
2614 get_glx_proc_address(const char *funcName)
2618 /* try static functions */
2619 for (i = 0; GLX_functions[i].Name; i++) {
2620 if (strcmp(GLX_functions[i].Name, funcName) == 0)
2621 return GLX_functions[i].Address;
2628 * Get the address of a named GL function. This is the pre-GLX 1.4 name for
2629 * \c glXGetProcAddress.
2631 * \param procName Name of a GL or GLX function.
2632 * \returns A pointer to the named function
2634 * \sa glXGetProcAddress
2636 _X_EXPORT void (*glXGetProcAddressARB(const GLubyte * procName)) (void)
2638 typedef void (*gl_function) (void);
2642 /* Search the table of GLX and internal functions first. If that
2643 * fails and the supplied name could be a valid core GL name, try
2644 * searching the core GL function table. This check is done to prevent
2645 * DRI based drivers from searching the core GL function table for
2646 * internal API functions.
2648 f = (gl_function) get_glx_proc_address((const char *) procName);
2649 if ((f == NULL) && (procName[0] == 'g') && (procName[1] == 'l')
2650 && (procName[2] != 'X')) {
2651 #ifdef GLX_SHARED_GLAPI
2652 f = (gl_function) __indirect_get_proc_address((const char *) procName);
2655 f = (gl_function) _glapi_get_proc_address((const char *) procName);
2657 struct glx_context *gc = __glXGetCurrentContext();
2659 if (gc != NULL && gc->vtable->get_proc_address != NULL)
2660 f = gc->vtable->get_proc_address((const char *) procName);
2667 * Get the address of a named GL function. This is the GLX 1.4 name for
2668 * \c glXGetProcAddressARB.
2670 * \param procName Name of a GL or GLX function.
2671 * \returns A pointer to the named function
2673 * \sa glXGetProcAddressARB
2675 _X_EXPORT void (*glXGetProcAddress(const GLubyte * procName)) (void)
2676 #if defined(__GNUC__) && !defined(GLX_ALIAS_UNSUPPORTED)
2677 __attribute__ ((alias("glXGetProcAddressARB")));
2680 return glXGetProcAddressARB(procName);
2682 #endif /* __GNUC__ */
2685 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
2687 * Get the unadjusted system time (UST). Currently, the UST is measured in
2688 * microseconds since Epoc. The actual resolution of the UST may vary from
2689 * system to system, and the units may vary from release to release.
2690 * Drivers should not call this function directly. They should instead use
2691 * \c glXGetProcAddress to obtain a pointer to the function.
2693 * \param ust Location to store the 64-bit UST
2694 * \returns Zero on success or a negative errno value on failure.
2696 * \sa glXGetProcAddress, PFNGLXGETUSTPROC
2698 * \since Internal API version 20030317.
2701 __glXGetUST(int64_t * ust)
2709 if (gettimeofday(&tv, NULL) == 0) {
2710 ust[0] = (tv.tv_sec * 1000000) + tv.tv_usec;
2717 #endif /* GLX_DIRECT_RENDERING */