2 ** License Applicability. Except to the extent portions of this file are
3 ** made subject to an alternative license as permitted in the SGI Free
4 ** Software License B, Version 1.1 (the "License"), the contents of this
5 ** file are subject only to the provisions of the License. You may not use
6 ** this file except in compliance with the License. You may obtain a copy
7 ** of the License at Silicon Graphics, Inc., attn: Legal Services, 1600
8 ** Amphitheatre Parkway, Mountain View, CA 94043-1351, or at:
10 ** http://oss.sgi.com/projects/FreeB
12 ** Note that, as provided in the License, the Software is distributed on an
13 ** "AS IS" basis, with ALL EXPRESS AND IMPLIED WARRANTIES AND CONDITIONS
14 ** DISCLAIMED, INCLUDING, WITHOUT LIMITATION, ANY IMPLIED WARRANTIES AND
15 ** CONDITIONS OF MERCHANTABILITY, SATISFACTORY QUALITY, FITNESS FOR A
16 ** PARTICULAR PURPOSE, AND NON-INFRINGEMENT.
18 ** Original Code. The Original Code is: OpenGL Sample Implementation,
19 ** Version 1.2.1, released January 26, 2000, developed by Silicon Graphics,
20 ** Inc. The Original Code is Copyright (c) 1991-2000 Silicon Graphics, Inc.
21 ** Copyright in any portions created by third parties is as indicated
22 ** elsewhere herein. All Rights Reserved.
24 ** Additional Notice Provisions: The application programming interfaces
25 ** established by SGI in conjunction with the Original Code are The
26 ** OpenGL(R) Graphics System: A Specification (Version 1.2.1), released
27 ** April 1, 1999; The OpenGL(R) Graphics System Utility Library (Version
28 ** 1.3), released November 4, 1998; and OpenGL(R) Graphics with the X
29 ** Window System(R) (Version 1.3), released October 19, 1998. This software
30 ** was created using the OpenGL(R) version 1.2.1 Sample Implementation
31 ** published by SGI, but has not been independently verified as being
32 ** compliant with the OpenGL(R) version 1.2.1 Specification.
38 * Client-side GLX interface.
42 #include "glxclient.h"
43 #include <X11/extensions/extutil.h>
44 #include <X11/extensions/Xext.h>
48 #ifdef GLX_DIRECT_RENDERING
49 #include "indirect_init.h"
50 #include <X11/extensions/xf86vmode.h>
53 #include "glxextensions.h"
54 #include "glcontextmodes.h"
58 static const char __glXGLXClientVendorName[] = "SGI";
59 static const char __glXGLXClientVersion[] = "1.4";
62 /****************************************************************************/
64 * Get the __DRIdrawable for the drawable associated with a GLXContext
66 * \param dpy The display associated with \c drawable.
67 * \param drawable GLXDrawable whose __DRIdrawable part is to be retrieved.
68 * \returns A pointer to the context's __DRIdrawable on success, or NULL if
69 * the drawable is not associated with a direct-rendering context.
72 #ifdef GLX_DIRECT_RENDERING
73 static __DRIdrawable *
74 GetDRIDrawable( Display *dpy, GLXDrawable drawable, int * const scrn_num )
76 __GLXdisplayPrivate * const priv = __glXInitialize(dpy);
78 if ( (priv != NULL) && (priv->driDisplay.private != NULL) ) {
79 const unsigned screen_count = ScreenCount(dpy);
82 for ( i = 0 ; i < screen_count ; i++ ) {
83 __DRIscreen * const psc = &priv->screenConfigs[i].driScreen;
84 __DRIdrawable * const pdraw = (psc->private != NULL)
85 ? (*psc->getDrawable)(dpy, drawable, psc->private) : NULL;
87 if ( pdraw != NULL ) {
88 if ( scrn_num != NULL ) {
102 * Get the GLX per-screen data structure associated with a GLX context.
104 * \param dpy Display for which the GLX per-screen information is to be
106 * \param scrn Screen on \c dpy for which the GLX per-screen information is
108 * \returns A pointer to the GLX per-screen data if \c dpy and \c scrn
109 * specify a valid GLX screen, or NULL otherwise.
111 * \todo Should this function validate that \c scrn is within the screen
112 * number range for \c dpy?
115 static __GLXscreenConfigs *
116 GetGLXScreenConfigs(Display *dpy, int scrn)
118 __GLXdisplayPrivate * const priv = __glXInitialize(dpy);
120 return (priv->screenConfigs != NULL) ? &priv->screenConfigs[scrn] : NULL;
125 GetGLXPrivScreenConfig( Display *dpy, int scrn, __GLXdisplayPrivate ** ppriv,
126 __GLXscreenConfigs ** ppsc )
128 /* Initialize the extension, if needed . This has the added value
129 * of initializing/allocating the display private
133 return GLX_NO_EXTENSION;
136 *ppriv = __glXInitialize(dpy);
137 if ( *ppriv == NULL ) {
138 return GLX_NO_EXTENSION;
141 /* Check screen number to see if its valid */
142 if ((scrn < 0) || (scrn >= ScreenCount(dpy))) {
143 return GLX_BAD_SCREEN;
146 /* Check to see if the GL is supported on this screen */
147 *ppsc = &((*ppriv)->screenConfigs[scrn]);
148 if ( (*ppsc)->configs == NULL ) {
149 /* No support for GL on this screen regardless of visual */
150 return GLX_BAD_VISUAL;
158 * Determine if a \c GLXFBConfig supplied by the application is valid.
160 * \param dpy Application supplied \c Display pointer.
161 * \param config Application supplied \c GLXFBConfig.
163 * \returns If the \c GLXFBConfig is valid, the a pointer to the matching
164 * \c __GLcontextModes structure is returned. Otherwise, \c NULL
167 static __GLcontextModes *
168 ValidateGLXFBConfig( Display * dpy, GLXFBConfig config )
170 __GLXdisplayPrivate * const priv = __glXInitialize(dpy);
171 const unsigned num_screens = ScreenCount(dpy);
173 const __GLcontextModes * modes;
176 if ( priv != NULL ) {
177 for ( i = 0 ; i < num_screens ; i++ ) {
178 for ( modes = priv->screenConfigs[i].configs
180 ; modes = modes->next ) {
181 if ( modes == (__GLcontextModes *) config ) {
182 return (__GLcontextModes *) config;
193 * \todo It should be possible to move the allocate of \c client_state_private
194 * later in the function for direct-rendering contexts. Direct-rendering
195 * contexts don't need to track client state, so they don't need that memory
198 * \todo Eliminate \c __glXInitVertexArrayState. Replace it with a new
199 * function called \c __glXAllocateClientState that allocates the memory and
200 * does all the initialization (including the pixel pack / unpack).
203 GLXContext AllocateGLXContext( Display *dpy )
208 __GLXattribute *state;
213 opcode = __glXSetupForCommand(dpy);
218 /* Allocate our context record */
219 gc = (GLXContext) Xmalloc(sizeof(struct __GLXcontextRec));
224 memset(gc, 0, sizeof(struct __GLXcontextRec));
226 state = Xmalloc(sizeof(struct __GLXattributeRec));
232 gc->client_state_private = state;
233 memset(gc->client_state_private, 0, sizeof(struct __GLXattributeRec));
234 state->NoDrawArraysProtocol = (getenv("LIBGL_NO_DRAWARRAYS") != NULL);
237 ** Create a temporary buffer to hold GLX rendering commands. The size
238 ** of the buffer is selected so that the maximum number of GLX rendering
239 ** commands can fit in a single X packet and still have room in the X
240 ** packet for the GLXRenderReq header.
243 bufSize = (XMaxRequestSize(dpy) * 4) - sz_xGLXRenderReq;
244 gc->buf = (GLubyte *) Xmalloc(bufSize);
246 Xfree(gc->client_state_private);
250 gc->bufSize = bufSize;
252 /* Fill in the new context */
253 gc->renderMode = GL_RENDER;
255 state->storePack.alignment = 4;
256 state->storeUnpack.alignment = 4;
258 gc->attributes.stackPointer = &gc->attributes.stack[0];
261 ** PERFORMANCE NOTE: A mode dependent fill image can speed things up.
262 ** Other code uses the fastImageUnpack bit, but it is never set
265 gc->fastImageUnpack = GL_FALSE;
266 gc->fillImage = __glFillImage;
267 gc->isDirect = GL_FALSE;
269 gc->bufEnd = gc->buf + bufSize;
272 ** Set limit register so that there will be one command per packet
276 gc->limit = gc->buf + bufSize - __GLX_BUFFER_LIMIT_SIZE;
279 gc->majorOpcode = opcode;
282 ** Constrain the maximum drawing command size allowed to be
283 ** transfered using the X_GLXRender protocol request. First
284 ** constrain by a software limit, then constrain by the protocl
287 if (bufSize > __GLX_RENDER_CMD_SIZE_LIMIT) {
288 bufSize = __GLX_RENDER_CMD_SIZE_LIMIT;
290 if (bufSize > __GLX_MAX_RENDER_CMD_SIZE) {
291 bufSize = __GLX_MAX_RENDER_CMD_SIZE;
293 gc->maxSmallRenderCommandSize = bufSize;
299 * Create a new context. Exactly one of \c vis and \c fbconfig should be
302 * \param use_glx_1_3 For FBConfigs, should GLX 1.3 protocol or
303 * SGIX_fbconfig protocol be used?
304 * \param renderType For FBConfigs, what is the rendering type?
308 CreateContext(Display *dpy, XVisualInfo *vis,
309 const __GLcontextModes * const fbconfig,
310 GLXContext shareList,
311 Bool allowDirect, GLXContextID contextID,
312 Bool use_glx_1_3, int renderType)
319 gc = AllocateGLXContext(dpy);
323 if (None == contextID) {
324 if ( (vis == NULL) && (fbconfig == NULL) )
327 #ifdef GLX_DIRECT_RENDERING
329 int screen = (fbconfig == NULL) ? vis->screen : fbconfig->screen;
330 __GLXscreenConfigs * const psc = GetGLXScreenConfigs(dpy, screen);
331 const __GLcontextModes * mode;
333 /* The value of fbconfig cannot change because it is tested
334 * later in the function.
336 if ( fbconfig == NULL ) {
337 /* FIXME: Is it possible for the __GLcontextModes structure
338 * FIXME: to not be found?
340 mode = _gl_context_modes_find_visual( psc->configs,
342 assert( mode != NULL );
343 assert( mode->screen == screen );
349 if (psc && psc->driScreen.private) {
350 void * const shared = (shareList != NULL)
351 ? shareList->driContext.private : NULL;
352 gc->driContext.private =
353 (*psc->driScreen.createNewContext)( dpy, mode, renderType,
356 if (gc->driContext.private) {
357 gc->isDirect = GL_TRUE;
358 gc->screen = mode->screen;
359 gc->vid = mode->visualID;
360 gc->fbconfigID = mode->fbconfigID;
361 gc->driContext.mode = mode;
368 if ( fbconfig == NULL ) {
369 xGLXCreateContextReq *req;
371 /* Send the glXCreateContext request */
372 GetReq(GLXCreateContext,req);
373 req->reqType = gc->majorOpcode;
374 req->glxCode = X_GLXCreateContext;
375 req->context = gc->xid = XAllocID(dpy);
376 req->visual = vis->visualid;
377 req->screen = vis->screen;
378 req->shareList = shareList ? shareList->xid : None;
379 req->isDirect = gc->isDirect;
381 else if ( use_glx_1_3 ) {
382 xGLXCreateNewContextReq *req;
384 /* Send the glXCreateNewContext request */
385 GetReq(GLXCreateNewContext,req);
386 req->reqType = gc->majorOpcode;
387 req->glxCode = X_GLXCreateNewContext;
388 req->context = gc->xid = XAllocID(dpy);
389 req->fbconfig = fbconfig->fbconfigID;
390 req->screen = fbconfig->screen;
391 req->renderType = renderType;
392 req->shareList = shareList ? shareList->xid : None;
393 req->isDirect = gc->isDirect;
396 xGLXVendorPrivateWithReplyReq *vpreq;
397 xGLXCreateContextWithConfigSGIXReq *req;
399 /* Send the glXCreateNewContext request */
400 GetReqExtra(GLXVendorPrivateWithReply,
401 sz_xGLXCreateContextWithConfigSGIXReq-sz_xGLXVendorPrivateWithReplyReq,vpreq);
402 req = (xGLXCreateContextWithConfigSGIXReq *)vpreq;
403 req->reqType = gc->majorOpcode;
404 req->glxCode = X_GLXVendorPrivateWithReply;
405 req->vendorCode = X_GLXvop_CreateContextWithConfigSGIX;
406 req->context = gc->xid = XAllocID(dpy);
407 req->fbconfig = fbconfig->fbconfigID;
408 req->screen = fbconfig->screen;
409 req->renderType = renderType;
410 req->shareList = shareList ? shareList->xid : None;
411 req->isDirect = gc->isDirect;
416 gc->imported = GL_FALSE;
420 gc->imported = GL_TRUE;
426 PUBLIC GLXContext glXCreateContext(Display *dpy, XVisualInfo *vis,
427 GLXContext shareList, Bool allowDirect)
429 return CreateContext(dpy, vis, NULL, shareList, allowDirect, None,
433 void __glXFreeContext(__GLXcontext *gc)
435 if (gc->vendor) XFree((char *) gc->vendor);
436 if (gc->renderer) XFree((char *) gc->renderer);
437 if (gc->version) XFree((char *) gc->version);
438 if (gc->extensions) XFree((char *) gc->extensions);
439 __glFreeAttributeState(gc);
440 XFree((char *) gc->buf);
441 Xfree((char *) gc->client_state_private);
447 ** Destroy the named context
450 DestroyContext(Display *dpy, GLXContext gc)
452 xGLXDestroyContextReq *req;
457 opcode = __glXSetupForCommand(dpy);
458 if (!opcode || !gc) {
464 imported = gc->imported;
467 #ifdef GLX_DIRECT_RENDERING
468 /* Destroy the direct rendering context */
470 if (gc->driContext.private) {
471 (*gc->driContext.destroyContext)(dpy, gc->screen,
472 gc->driContext.private);
473 gc->driContext.private = NULL;
478 if (gc->currentDpy) {
479 /* Have to free later cuz it's in use now */
482 /* Destroy the handle if not current to anybody */
484 __glXFreeContext(gc);
489 ** This dpy also created the server side part of the context.
490 ** Send the glXDestroyContext request.
493 GetReq(GLXDestroyContext,req);
494 req->reqType = opcode;
495 req->glxCode = X_GLXDestroyContext;
502 PUBLIC void glXDestroyContext(Display *dpy, GLXContext gc)
504 DestroyContext(dpy, gc);
508 ** Return the major and minor version #s for the GLX extension
510 PUBLIC Bool glXQueryVersion(Display *dpy, int *major, int *minor)
512 __GLXdisplayPrivate *priv;
514 /* Init the extension. This fetches the major and minor version. */
515 priv = __glXInitialize(dpy);
516 if (!priv) return GL_FALSE;
518 if (major) *major = priv->majorVersion;
519 if (minor) *minor = priv->minorVersion;
524 ** Query the existance of the GLX extension
526 PUBLIC Bool glXQueryExtension(Display *dpy, int *errorBase, int *eventBase)
528 int major_op, erb, evb;
531 rv = XQueryExtension(dpy, GLX_EXTENSION_NAME, &major_op, &evb, &erb);
533 if (errorBase) *errorBase = erb;
534 if (eventBase) *eventBase = evb;
540 ** Put a barrier in the token stream that forces the GL to finish its
541 ** work before X can proceed.
543 PUBLIC void glXWaitGL(void)
546 GLXContext gc = __glXGetCurrentContext();
547 Display *dpy = gc->currentDpy;
551 /* Flush any pending commands out */
552 __glXFlushRenderBuffer(gc, gc->pc);
554 #ifdef GLX_DIRECT_RENDERING
556 /* This bit of ugliness unwraps the glFinish function */
565 /* Send the glXWaitGL request */
567 GetReq(GLXWaitGL,req);
568 req->reqType = gc->majorOpcode;
569 req->glxCode = X_GLXWaitGL;
570 req->contextTag = gc->currentContextTag;
576 ** Put a barrier in the token stream that forces X to finish its
577 ** work before GL can proceed.
579 PUBLIC void glXWaitX(void)
582 GLXContext gc = __glXGetCurrentContext();
583 Display *dpy = gc->currentDpy;
587 /* Flush any pending commands out */
588 __glXFlushRenderBuffer(gc, gc->pc);
590 #ifdef GLX_DIRECT_RENDERING
598 ** Send the glXWaitX request.
601 GetReq(GLXWaitX,req);
602 req->reqType = gc->majorOpcode;
603 req->glxCode = X_GLXWaitX;
604 req->contextTag = gc->currentContextTag;
609 PUBLIC void glXUseXFont(Font font, int first, int count, int listBase)
611 xGLXUseXFontReq *req;
612 GLXContext gc = __glXGetCurrentContext();
613 Display *dpy = gc->currentDpy;
617 /* Flush any pending commands out */
618 (void) __glXFlushRenderBuffer(gc, gc->pc);
620 #ifdef GLX_DIRECT_RENDERING
622 DRI_glXUseXFont(font, first, count, listBase);
627 /* Send the glXUseFont request */
629 GetReq(GLXUseXFont,req);
630 req->reqType = gc->majorOpcode;
631 req->glxCode = X_GLXUseXFont;
632 req->contextTag = gc->currentContextTag;
636 req->listBase = listBase;
641 /************************************************************************/
644 ** Copy the source context to the destination context using the
647 PUBLIC void glXCopyContext(Display *dpy, GLXContext source,
648 GLXContext dest, unsigned long mask)
650 xGLXCopyContextReq *req;
651 GLXContext gc = __glXGetCurrentContext();
655 opcode = __glXSetupForCommand(dpy);
660 #ifdef GLX_DIRECT_RENDERING
662 /* NOT_DONE: This does not work yet */
667 ** If the source is the current context, send its tag so that the context
668 ** can be flushed before the copy.
670 if (source == gc && dpy == gc->currentDpy) {
671 tag = gc->currentContextTag;
676 /* Send the glXCopyContext request */
678 GetReq(GLXCopyContext,req);
679 req->reqType = opcode;
680 req->glxCode = X_GLXCopyContext;
681 req->source = source ? source->xid : None;
682 req->dest = dest ? dest->xid : None;
684 req->contextTag = tag;
691 * Determine if a context uses direct rendering.
693 * \param dpy Display where the context was created.
694 * \param contextID ID of the context to be tested.
696 * \returns \c GL_TRUE if the context is direct rendering or not.
698 static Bool __glXIsDirect(Display *dpy, GLXContextID contextID)
700 xGLXIsDirectReq *req;
701 xGLXIsDirectReply reply;
704 opcode = __glXSetupForCommand(dpy);
709 /* Send the glXIsDirect request */
711 GetReq(GLXIsDirect,req);
712 req->reqType = opcode;
713 req->glxCode = X_GLXIsDirect;
714 req->context = contextID;
715 _XReply(dpy, (xReply*) &reply, 0, False);
719 return reply.isDirect;
724 * Shouldn't this function \b always return \c GL_FALSE when
725 * \c GLX_DIRECT_RENDERING is not defined? Do we really need to bother with
726 * the GLX protocol here at all?
728 PUBLIC Bool glXIsDirect(Display *dpy, GLXContext gc)
732 #ifdef GLX_DIRECT_RENDERING
733 } else if (gc->isDirect) {
737 return __glXIsDirect(dpy, gc->xid);
740 PUBLIC GLXPixmap glXCreateGLXPixmap(Display *dpy, XVisualInfo *vis,
743 xGLXCreateGLXPixmapReq *req;
747 opcode = __glXSetupForCommand(dpy);
752 /* Send the glXCreateGLXPixmap request */
754 GetReq(GLXCreateGLXPixmap,req);
755 req->reqType = opcode;
756 req->glxCode = X_GLXCreateGLXPixmap;
757 req->screen = vis->screen;
758 req->visual = vis->visualid;
759 req->pixmap = pixmap;
760 req->glxpixmap = xid = XAllocID(dpy);
767 ** Destroy the named pixmap
769 PUBLIC void glXDestroyGLXPixmap(Display *dpy, GLXPixmap glxpixmap)
771 xGLXDestroyGLXPixmapReq *req;
774 opcode = __glXSetupForCommand(dpy);
779 /* Send the glXDestroyGLXPixmap request */
781 GetReq(GLXDestroyGLXPixmap,req);
782 req->reqType = opcode;
783 req->glxCode = X_GLXDestroyGLXPixmap;
784 req->glxpixmap = glxpixmap;
789 PUBLIC void glXSwapBuffers(Display *dpy, GLXDrawable drawable)
791 xGLXSwapBuffersReq *req;
795 #ifdef GLX_DIRECT_RENDERING
796 __DRIdrawable *pdraw = GetDRIDrawable( dpy, drawable, NULL );
798 if ( pdraw != NULL ) {
799 (*pdraw->swapBuffers)(dpy, pdraw->private);
804 opcode = __glXSetupForCommand(dpy);
810 ** The calling thread may or may not have a current context. If it
811 ** does, send the context tag so the server can do a flush.
813 gc = __glXGetCurrentContext();
814 if ((gc != NULL) && (dpy == gc->currentDpy) &&
815 ((drawable == gc->currentDrawable) || (drawable == gc->currentReadable)) ) {
816 tag = gc->currentContextTag;
821 /* Send the glXSwapBuffers request */
823 GetReq(GLXSwapBuffers,req);
824 req->reqType = opcode;
825 req->glxCode = X_GLXSwapBuffers;
826 req->drawable = drawable;
827 req->contextTag = tag;
835 ** Return configuration information for the given display, screen and
836 ** visual combination.
838 PUBLIC int glXGetConfig(Display *dpy, XVisualInfo *vis, int attribute,
841 __GLXdisplayPrivate *priv;
842 __GLXscreenConfigs *psc;
845 status = GetGLXPrivScreenConfig( dpy, vis->screen, & priv, & psc );
846 if ( status == Success ) {
847 const __GLcontextModes * const modes = _gl_context_modes_find_visual(
848 psc->configs, vis->visualid );
850 /* Lookup attribute after first finding a match on the visual */
851 if ( modes != NULL ) {
852 return _gl_get_context_mode_data( modes, attribute, value_return );
855 status = GLX_BAD_VISUAL;
859 ** If we can't find the config for this visual, this visual is not
860 ** supported by the OpenGL implementation on the server.
862 if ( (status == GLX_BAD_VISUAL) && (attribute == GLX_USE_GL) ) {
863 *value_return = GL_FALSE;
870 /************************************************************************/
873 init_fbconfig_for_chooser( __GLcontextModes * config,
874 GLboolean fbconfig_style_tags )
876 memset( config, 0, sizeof( __GLcontextModes ) );
877 config->visualID = (XID) GLX_DONT_CARE;
878 config->visualType = GLX_DONT_CARE;
880 /* glXChooseFBConfig specifies different defaults for these two than
883 if ( fbconfig_style_tags ) {
884 config->rgbMode = GL_TRUE;
885 config->doubleBufferMode = GLX_DONT_CARE;
888 config->visualRating = GLX_DONT_CARE;
889 config->transparentPixel = GLX_NONE;
890 config->transparentRed = GLX_DONT_CARE;
891 config->transparentGreen = GLX_DONT_CARE;
892 config->transparentBlue = GLX_DONT_CARE;
893 config->transparentAlpha = GLX_DONT_CARE;
894 config->transparentIndex = GLX_DONT_CARE;
896 config->drawableType = GLX_WINDOW_BIT;
897 config->renderType = (config->rgbMode) ? GLX_RGBA_BIT : GLX_COLOR_INDEX_BIT;
898 config->xRenderable = GLX_DONT_CARE;
899 config->fbconfigID = (GLXFBConfigID)(GLX_DONT_CARE);
901 config->swapMethod = GLX_DONT_CARE;
904 #define MATCH_DONT_CARE( param ) \
906 if ( (a-> param != GLX_DONT_CARE) \
907 && (a-> param != b-> param) ) { \
912 #define MATCH_MINIMUM( param ) \
914 if ( (a-> param != GLX_DONT_CARE) \
915 && (a-> param > b-> param) ) { \
920 #define MATCH_EXACT( param ) \
922 if ( a-> param != b-> param) { \
928 * Determine if two GLXFBConfigs are compatible.
930 * \param a Application specified config to test.
931 * \param b Server specified config to test against \c a.
934 fbconfigs_compatible( const __GLcontextModes * const a,
935 const __GLcontextModes * const b )
937 MATCH_DONT_CARE( doubleBufferMode );
938 MATCH_DONT_CARE( visualType );
939 MATCH_DONT_CARE( visualRating );
940 MATCH_DONT_CARE( xRenderable );
941 MATCH_DONT_CARE( fbconfigID );
942 MATCH_DONT_CARE( swapMethod );
944 MATCH_MINIMUM( rgbBits );
945 MATCH_MINIMUM( numAuxBuffers );
946 MATCH_MINIMUM( redBits );
947 MATCH_MINIMUM( greenBits );
948 MATCH_MINIMUM( blueBits );
949 MATCH_MINIMUM( alphaBits );
950 MATCH_MINIMUM( depthBits );
951 MATCH_MINIMUM( stencilBits );
952 MATCH_MINIMUM( accumRedBits );
953 MATCH_MINIMUM( accumGreenBits );
954 MATCH_MINIMUM( accumBlueBits );
955 MATCH_MINIMUM( accumAlphaBits );
956 MATCH_MINIMUM( sampleBuffers );
957 MATCH_MINIMUM( maxPbufferWidth );
958 MATCH_MINIMUM( maxPbufferHeight );
959 MATCH_MINIMUM( maxPbufferPixels );
960 MATCH_MINIMUM( samples );
962 MATCH_DONT_CARE( stereoMode );
963 MATCH_EXACT( level );
965 if ( ((a->drawableType & b->drawableType) == 0)
966 || ((a->renderType & b->renderType) == 0) ) {
971 /* There is a bug in a few of the XFree86 DDX drivers. They contain
972 * visuals with a "transparent type" of 0 when they really mean GLX_NONE.
973 * Technically speaking, it is a bug in the DDX driver, but there is
974 * enough of an installed base to work around the problem here. In any
975 * case, 0 is not a valid value of the transparent type, so we'll treat 0
976 * from the app as GLX_DONT_CARE. We'll consider GLX_NONE from the app and
977 * 0 from the server to be a match to maintain backward compatibility with
978 * the (broken) drivers.
981 if ( a->transparentPixel != GLX_DONT_CARE
982 && a->transparentPixel != 0 ) {
983 if ( a->transparentPixel == GLX_NONE ) {
984 if ( b->transparentPixel != GLX_NONE && b->transparentPixel != 0 )
987 MATCH_EXACT( transparentPixel );
990 switch ( a->transparentPixel ) {
991 case GLX_TRANSPARENT_RGB:
992 MATCH_DONT_CARE( transparentRed );
993 MATCH_DONT_CARE( transparentGreen );
994 MATCH_DONT_CARE( transparentBlue );
995 MATCH_DONT_CARE( transparentAlpha );
998 case GLX_TRANSPARENT_INDEX:
999 MATCH_DONT_CARE( transparentIndex );
1011 /* There's some trickly language in the GLX spec about how this is supposed
1012 * to work. Basically, if a given component size is either not specified
1013 * or the requested size is zero, it is supposed to act like PERFER_SMALLER.
1014 * Well, that's really hard to do with the code as-is. This behavior is
1015 * closer to correct, but still not technically right.
1017 #define PREFER_LARGER_OR_ZERO(comp) \
1019 if ( ((*a)-> comp) != ((*b)-> comp) ) { \
1020 if ( ((*a)-> comp) == 0 ) { \
1023 else if ( ((*b)-> comp) == 0 ) { \
1027 return ((*b)-> comp) - ((*a)-> comp) ; \
1032 #define PREFER_LARGER(comp) \
1034 if ( ((*a)-> comp) != ((*b)-> comp) ) { \
1035 return ((*b)-> comp) - ((*a)-> comp) ; \
1039 #define PREFER_SMALLER(comp) \
1041 if ( ((*a)-> comp) != ((*b)-> comp) ) { \
1042 return ((*a)-> comp) - ((*b)-> comp) ; \
1047 * Compare two GLXFBConfigs. This function is intended to be used as the
1048 * compare function passed in to qsort.
1050 * \returns If \c a is a "better" config, according to the specification of
1051 * SGIX_fbconfig, a number less than zero is returned. If \c b is
1052 * better, then a number greater than zero is return. If both are
1053 * equal, zero is returned.
1054 * \sa qsort, glXChooseVisual, glXChooseFBConfig, glXChooseFBConfigSGIX
1057 fbconfig_compare( const __GLcontextModes * const * const a,
1058 const __GLcontextModes * const * const b )
1060 /* The order of these comparisons must NOT change. It is defined by
1061 * the GLX 1.3 spec and ARB_multisample.
1064 PREFER_SMALLER( visualSelectGroup );
1066 /* The sort order for the visualRating is GLX_NONE, GLX_SLOW, and
1067 * GLX_NON_CONFORMANT_CONFIG. It just so happens that this is the
1068 * numerical sort order of the enums (0x8000, 0x8001, and 0x800D).
1070 PREFER_SMALLER( visualRating );
1072 /* This isn't quite right. It is supposed to compare the sum of the
1073 * components the user specifically set minimums for.
1075 PREFER_LARGER_OR_ZERO( redBits );
1076 PREFER_LARGER_OR_ZERO( greenBits );
1077 PREFER_LARGER_OR_ZERO( blueBits );
1078 PREFER_LARGER_OR_ZERO( alphaBits );
1080 PREFER_SMALLER( rgbBits );
1082 if ( ((*a)->doubleBufferMode != (*b)->doubleBufferMode) ) {
1083 /* Prefer single-buffer.
1085 return ( !(*a)->doubleBufferMode ) ? -1 : 1;
1088 PREFER_SMALLER( numAuxBuffers );
1090 PREFER_LARGER_OR_ZERO( depthBits );
1091 PREFER_SMALLER( stencilBits );
1093 /* This isn't quite right. It is supposed to compare the sum of the
1094 * components the user specifically set minimums for.
1096 PREFER_LARGER_OR_ZERO( accumRedBits );
1097 PREFER_LARGER_OR_ZERO( accumGreenBits );
1098 PREFER_LARGER_OR_ZERO( accumBlueBits );
1099 PREFER_LARGER_OR_ZERO( accumAlphaBits );
1101 PREFER_SMALLER( visualType );
1103 /* None of the multisample specs say where this comparison should happen,
1104 * so I put it near the end.
1106 PREFER_SMALLER( sampleBuffers );
1107 PREFER_SMALLER( samples );
1109 /* None of the pbuffer or fbconfig specs say that this comparison needs
1110 * to happen at all, but it seems like it should.
1112 PREFER_LARGER( maxPbufferWidth );
1113 PREFER_LARGER( maxPbufferHeight );
1114 PREFER_LARGER( maxPbufferPixels );
1121 * Selects and sorts a subset of the supplied configs based on the attributes.
1122 * This function forms to basis of \c glXChooseVisual, \c glXChooseFBConfig,
1123 * and \c glXChooseFBConfigSGIX.
1125 * \param configs Array of pointers to possible configs. The elements of
1126 * this array that do not meet the criteria will be set to
1127 * NULL. The remaining elements will be sorted according to
1128 * the various visual / FBConfig selection rules.
1129 * \param num_configs Number of elements in the \c configs array.
1130 * \param attribList Attributes used select from \c configs. This array is
1131 * terminated by a \c None tag. The array can either take
1132 * the form expected by \c glXChooseVisual (where boolean
1133 * tags do not have a value) or by \c glXChooseFBConfig
1134 * (where every tag has a value).
1135 * \param fbconfig_style_tags Selects whether \c attribList is in
1136 * \c glXChooseVisual style or
1137 * \c glXChooseFBConfig style.
1138 * \returns The number of valid elements left in \c configs.
1140 * \sa glXChooseVisual, glXChooseFBConfig, glXChooseFBConfigSGIX
1143 choose_visual( __GLcontextModes ** configs, int num_configs,
1144 const int *attribList, GLboolean fbconfig_style_tags )
1146 __GLcontextModes test_config;
1150 /* This is a fairly direct implementation of the selection method
1151 * described by GLX_SGIX_fbconfig. Start by culling out all the
1152 * configs that are not compatible with the selected parameter
1156 init_fbconfig_for_chooser( & test_config, fbconfig_style_tags );
1157 __glXInitializeVisualConfigFromTags( & test_config, 512,
1158 (const INT32 *) attribList,
1159 GL_TRUE, fbconfig_style_tags );
1162 for ( i = 0 ; i < num_configs ; i++ ) {
1163 if ( fbconfigs_compatible( & test_config, configs[i] ) ) {
1164 configs[ base ] = configs[ i ];
1173 if ( base < num_configs ) {
1174 (void) memset( & configs[ base ], 0,
1175 sizeof( void * ) * (num_configs - base) );
1178 /* After the incompatible configs are removed, the resulting
1179 * list is sorted according to the rules set out in the various
1183 qsort( configs, base, sizeof( __GLcontextModes * ),
1184 (int (*)(const void*, const void*)) fbconfig_compare );
1192 ** Return the visual that best matches the template. Return None if no
1193 ** visual matches the template.
1195 PUBLIC XVisualInfo *glXChooseVisual(Display *dpy, int screen, int *attribList)
1197 XVisualInfo *visualList = NULL;
1198 __GLXdisplayPrivate *priv;
1199 __GLXscreenConfigs *psc;
1200 __GLcontextModes test_config;
1201 __GLcontextModes *modes;
1202 const __GLcontextModes *best_config = NULL;
1205 ** Get a list of all visuals, return if list is empty
1207 if ( GetGLXPrivScreenConfig( dpy, screen, & priv, & psc ) != Success ) {
1213 ** Build a template from the defaults and the attribute list
1214 ** Free visual list and return if an unexpected token is encountered
1216 init_fbconfig_for_chooser( & test_config, GL_FALSE );
1217 __glXInitializeVisualConfigFromTags( & test_config, 512,
1218 (const INT32 *) attribList,
1219 GL_TRUE, GL_FALSE );
1222 ** Eliminate visuals that don't meet minimum requirements
1223 ** Compute a score for those that do
1224 ** Remember which visual, if any, got the highest score
1226 for ( modes = psc->configs ; modes != NULL ; modes = modes->next ) {
1227 if ( fbconfigs_compatible( & test_config, modes )
1228 && ((best_config == NULL)
1229 || (fbconfig_compare( (const __GLcontextModes * const * const)&modes, &best_config ) < 0)) ) {
1230 best_config = modes;
1235 ** If no visual is acceptable, return None
1236 ** Otherwise, create an XVisualInfo list with just the selected X visual
1239 if (best_config != NULL) {
1240 XVisualInfo visualTemplate;
1243 visualTemplate.screen = screen;
1244 visualTemplate.visualid = best_config->visualID;
1245 visualList = XGetVisualInfo( dpy, VisualScreenMask|VisualIDMask,
1246 &visualTemplate, &i );
1253 PUBLIC const char *glXQueryExtensionsString( Display *dpy, int screen )
1255 __GLXscreenConfigs *psc;
1256 __GLXdisplayPrivate *priv;
1258 if ( GetGLXPrivScreenConfig( dpy, screen, & priv, & psc ) != Success ) {
1262 if (!psc->effectiveGLXexts) {
1263 if (!psc->serverGLXexts) {
1264 psc->serverGLXexts = __glXGetStringFromServer(dpy, priv->majorOpcode,
1265 X_GLXQueryServerString,
1266 screen, GLX_EXTENSIONS);
1269 __glXCalculateUsableExtensions(psc,
1270 #ifdef GLX_DIRECT_RENDERING
1271 (psc->driScreen.private != NULL),
1275 priv->minorVersion);
1278 return psc->effectiveGLXexts;
1281 PUBLIC const char *glXGetClientString( Display *dpy, int name )
1285 return (__glXGLXClientVendorName);
1287 return (__glXGLXClientVersion);
1288 case GLX_EXTENSIONS:
1289 return (__glXGetClientExtensions());
1295 PUBLIC const char *glXQueryServerString( Display *dpy, int screen, int name )
1297 __GLXscreenConfigs *psc;
1298 __GLXdisplayPrivate *priv;
1302 if ( GetGLXPrivScreenConfig( dpy, screen, & priv, & psc ) != Success ) {
1308 str = & priv->serverGLXvendor;
1311 str = & priv->serverGLXversion;
1313 case GLX_EXTENSIONS:
1314 str = & psc->serverGLXexts;
1320 if ( *str == NULL ) {
1321 *str = __glXGetStringFromServer(dpy, priv->majorOpcode,
1322 X_GLXQueryServerString, screen, name);
1328 void __glXClientInfo ( Display *dpy, int opcode )
1330 xGLXClientInfoReq *req;
1332 char * ext_str = __glXGetClientGLExtensionString();
1334 /* Send the glXClientInfo request */
1336 GetReq(GLXClientInfo,req);
1337 req->reqType = opcode;
1338 req->glxCode = X_GLXClientInfo;
1339 req->major = GLX_MAJOR_VERSION;
1340 req->minor = GLX_MINOR_VERSION;
1342 size = strlen( ext_str ) + 1;
1343 req->length += (size + 3) >> 2;
1344 req->numbytes = size;
1345 Data(dpy, ext_str, size);
1355 ** EXT_import_context
1358 PUBLIC Display *glXGetCurrentDisplay(void)
1360 GLXContext gc = __glXGetCurrentContext();
1361 if (NULL == gc) return NULL;
1362 return gc->currentDpy;
1365 PUBLIC GLX_ALIAS(Display *, glXGetCurrentDisplayEXT, (void), (),
1366 glXGetCurrentDisplay)
1369 * Used internally by libGL to send \c xGLXQueryContextinfoExtReq requests
1372 * \param dpy Display where \c ctx was created.
1373 * \param ctx Context to query.
1374 * \returns \c Success on success. \c GLX_BAD_CONTEXT if \c ctx is invalid,
1375 * or zero if the request failed due to internal problems (i.e.,
1376 * unable to allocate temporary memory, etc.)
1379 * This function dynamically determines whether to use the EXT_import_context
1380 * version of the protocol or the GLX 1.3 version of the protocol.
1382 static int __glXQueryContextInfo(Display *dpy, GLXContext ctx)
1384 __GLXdisplayPrivate *priv = __glXInitialize(dpy);
1385 xGLXQueryContextReply reply;
1391 return GLX_BAD_CONTEXT;
1393 opcode = __glXSetupForCommand(dpy);
1398 /* Send the glXQueryContextInfoEXT request */
1401 if ( (priv->majorVersion > 1) || (priv->minorVersion >= 3) ) {
1402 xGLXQueryContextReq *req;
1404 GetReq(GLXQueryContext, req);
1406 req->reqType = opcode;
1407 req->glxCode = X_GLXQueryContext;
1408 req->context = (unsigned int)(ctx->xid);
1411 xGLXVendorPrivateReq *vpreq;
1412 xGLXQueryContextInfoEXTReq *req;
1414 GetReqExtra( GLXVendorPrivate,
1415 sz_xGLXQueryContextInfoEXTReq - sz_xGLXVendorPrivateReq,
1417 req = (xGLXQueryContextInfoEXTReq *)vpreq;
1418 req->reqType = opcode;
1419 req->glxCode = X_GLXVendorPrivateWithReply;
1420 req->vendorCode = X_GLXvop_QueryContextInfoEXT;
1421 req->context = (unsigned int)(ctx->xid);
1424 _XReply(dpy, (xReply*) &reply, 0, False);
1426 numValues = reply.n;
1429 else if (numValues > __GLX_MAX_CONTEXT_PROPS)
1433 int *propList, *pProp;
1437 nPropListBytes = numValues << 3;
1438 propList = (int *) Xmalloc(nPropListBytes);
1439 if (NULL == propList) {
1442 _XRead(dpy, (char *)propList, nPropListBytes);
1444 for (i=0; i < numValues; i++) {
1446 case GLX_SHARE_CONTEXT_EXT:
1447 ctx->share_xid = *pProp++;
1449 case GLX_VISUAL_ID_EXT:
1450 ctx->vid = *pProp++;
1453 ctx->screen = *pProp++;
1455 case GLX_FBCONFIG_ID:
1456 ctx->fbconfigID = *pProp++;
1458 case GLX_RENDER_TYPE:
1459 ctx->renderType = *pProp++;
1466 Xfree((char *)propList);
1476 glXQueryContext(Display *dpy, GLXContext ctx, int attribute, int *value)
1480 /* get the information from the server if we don't have it already */
1481 if (!ctx->isDirect && (ctx->vid == None)) {
1482 retVal = __glXQueryContextInfo(dpy, ctx);
1483 if (Success != retVal) return retVal;
1485 switch (attribute) {
1486 case GLX_SHARE_CONTEXT_EXT:
1487 *value = (int)(ctx->share_xid);
1489 case GLX_VISUAL_ID_EXT:
1490 *value = (int)(ctx->vid);
1493 *value = (int)(ctx->screen);
1495 case GLX_FBCONFIG_ID:
1496 *value = (int)(ctx->fbconfigID);
1498 case GLX_RENDER_TYPE:
1499 *value = (int)(ctx->renderType);
1502 return GLX_BAD_ATTRIBUTE;
1507 PUBLIC GLX_ALIAS( int, glXQueryContextInfoEXT,
1508 (Display *dpy, GLXContext ctx, int attribute, int *value),
1509 (dpy, ctx, attribute, value),
1512 PUBLIC GLXContextID glXGetContextIDEXT(const GLXContext ctx)
1517 PUBLIC GLXContext glXImportContextEXT(Display *dpy, GLXContextID contextID)
1521 if (contextID == None) {
1524 if (__glXIsDirect(dpy, contextID)) {
1528 ctx = CreateContext(dpy, NULL, NULL, NULL, False, contextID, False, 0);
1530 if (Success != __glXQueryContextInfo(dpy, ctx)) {
1537 PUBLIC void glXFreeContextEXT(Display *dpy, GLXContext ctx)
1539 DestroyContext(dpy, ctx);
1545 * GLX 1.3 functions - these are just stubs for now!
1548 PUBLIC GLXFBConfig *glXChooseFBConfig(Display *dpy, int screen,
1549 const int *attribList, int *nitems)
1551 __GLcontextModes ** config_list;
1555 config_list = (__GLcontextModes **)
1556 glXGetFBConfigs( dpy, screen, & list_size );
1558 if ( (config_list != NULL) && (list_size > 0) && (attribList != NULL) ) {
1559 list_size = choose_visual( config_list, list_size, attribList,
1561 if ( list_size == 0 ) {
1562 XFree( config_list );
1567 *nitems = list_size;
1568 return (GLXFBConfig *) config_list;
1572 PUBLIC GLXContext glXCreateNewContext(Display *dpy, GLXFBConfig config,
1573 int renderType, GLXContext shareList,
1576 return CreateContext( dpy, NULL, (__GLcontextModes *) config, shareList,
1577 allowDirect, None, True, renderType );
1581 PUBLIC GLXDrawable glXGetCurrentReadDrawable(void)
1583 GLXContext gc = __glXGetCurrentContext();
1584 return gc->currentReadable;
1588 PUBLIC GLXFBConfig *glXGetFBConfigs(Display *dpy, int screen, int *nelements)
1590 __GLXdisplayPrivate *priv = __glXInitialize(dpy);
1591 __GLcontextModes ** config = NULL;
1594 if ( (priv->screenConfigs != NULL)
1595 && (screen >= 0) && (screen <= ScreenCount(dpy))
1596 && (priv->screenConfigs[screen].configs != NULL)
1597 && (priv->screenConfigs[screen].configs->fbconfigID != GLX_DONT_CARE) ) {
1598 unsigned num_configs = 0;
1599 __GLcontextModes * modes;
1602 for ( modes = priv->screenConfigs[screen].configs
1604 ; modes = modes->next ) {
1605 if ( modes->fbconfigID != GLX_DONT_CARE ) {
1610 config = (__GLcontextModes **) Xmalloc( sizeof(__GLcontextModes *)
1612 if ( config != NULL ) {
1613 *nelements = num_configs;
1615 for ( modes = priv->screenConfigs[screen].configs
1617 ; modes = modes->next ) {
1623 return (GLXFBConfig *) config;
1627 PUBLIC int glXGetFBConfigAttrib(Display *dpy, GLXFBConfig config,
1628 int attribute, int *value)
1630 __GLcontextModes * const modes = ValidateGLXFBConfig( dpy, config );
1632 return (modes != NULL)
1633 ? _gl_get_context_mode_data( modes, attribute, value )
1638 PUBLIC XVisualInfo *glXGetVisualFromFBConfig(Display *dpy, GLXFBConfig config)
1640 XVisualInfo visualTemplate;
1641 __GLcontextModes * fbconfig = (__GLcontextModes *) config;
1645 ** Get a list of all visuals, return if list is empty
1647 visualTemplate.visualid = fbconfig->visualID;
1648 return XGetVisualInfo(dpy,VisualIDMask,&visualTemplate,&count);
1653 ** GLX_SGI_swap_control
1655 static int __glXSwapIntervalSGI(int interval)
1657 xGLXVendorPrivateReq *req;
1658 GLXContext gc = __glXGetCurrentContext();
1660 CARD32 * interval_ptr;
1664 return GLX_BAD_CONTEXT;
1667 if ( interval <= 0 ) {
1668 return GLX_BAD_VALUE;
1671 #ifdef GLX_DIRECT_RENDERING
1672 if ( gc->isDirect ) {
1673 __GLXscreenConfigs * const psc = GetGLXScreenConfigs( gc->currentDpy,
1675 __DRIdrawable * const pdraw = GetDRIDrawable( gc->currentDpy,
1676 gc->currentDrawable,
1678 if ( __glXExtensionBitIsEnabled( psc, SGI_swap_control_bit )
1679 && (pdraw != NULL) ) {
1680 pdraw->swap_interval = interval;
1684 return GLX_BAD_CONTEXT;
1688 dpy = gc->currentDpy;
1689 opcode = __glXSetupForCommand(dpy);
1694 /* Send the glXSwapIntervalSGI request */
1696 GetReqExtra(GLXVendorPrivate,sizeof(CARD32),req);
1697 req->reqType = opcode;
1698 req->glxCode = X_GLXVendorPrivate;
1699 req->vendorCode = X_GLXvop_SwapIntervalSGI;
1700 req->contextTag = gc->currentContextTag;
1702 interval_ptr = (CARD32 *) (req + 1);
1703 *interval_ptr = interval;
1714 ** GLX_MESA_swap_control
1716 static int __glXSwapIntervalMESA(unsigned int interval)
1718 #ifdef GLX_DIRECT_RENDERING
1719 GLXContext gc = __glXGetCurrentContext();
1721 if ( interval < 0 ) {
1722 return GLX_BAD_VALUE;
1725 if ( (gc != NULL) && gc->isDirect ) {
1726 __GLXscreenConfigs * const psc = GetGLXScreenConfigs( gc->currentDpy,
1729 if ( (psc != NULL) && (psc->driScreen.private != NULL)
1730 && __glXExtensionBitIsEnabled( psc, MESA_swap_control_bit ) ) {
1731 __DRIdrawable * const pdraw =
1732 (*psc->driScreen.getDrawable)(gc->currentDpy,
1733 gc->currentDrawable,
1734 psc->driScreen.private);
1735 if ( pdraw != NULL ) {
1736 pdraw->swap_interval = interval;
1745 return GLX_BAD_CONTEXT;
1749 static int __glXGetSwapIntervalMESA(void)
1751 #ifdef GLX_DIRECT_RENDERING
1752 GLXContext gc = __glXGetCurrentContext();
1754 if ( (gc != NULL) && gc->isDirect ) {
1755 __GLXscreenConfigs * const psc = GetGLXScreenConfigs( gc->currentDpy,
1758 if ( (psc != NULL) && (psc->driScreen.private != NULL)
1759 && __glXExtensionBitIsEnabled( psc, MESA_swap_control_bit ) ) {
1760 __DRIdrawable * const pdraw =
1761 (*psc->driScreen.getDrawable)(gc->currentDpy,
1762 gc->currentDrawable,
1763 psc->driScreen.private);
1764 if ( pdraw != NULL ) {
1765 return pdraw->swap_interval;
1776 ** GLX_MESA_swap_frame_usage
1779 static GLint __glXBeginFrameTrackingMESA(Display *dpy, GLXDrawable drawable)
1781 int status = GLX_BAD_CONTEXT;
1782 #ifdef GLX_DIRECT_RENDERING
1784 __DRIdrawable * const pdraw = GetDRIDrawable(dpy, drawable, & screen);
1785 __GLXscreenConfigs * const psc = GetGLXScreenConfigs(dpy, screen);
1787 if ( (pdraw != NULL) && (pdraw->frameTracking != NULL)
1788 && __glXExtensionBitIsEnabled( psc, MESA_swap_frame_usage_bit ) ) {
1789 status = pdraw->frameTracking( dpy, pdraw->private, GL_TRUE );
1799 static GLint __glXEndFrameTrackingMESA(Display *dpy, GLXDrawable drawable)
1801 int status = GLX_BAD_CONTEXT;
1802 #ifdef GLX_DIRECT_RENDERING
1804 __DRIdrawable * const pdraw = GetDRIDrawable(dpy, drawable, & screen);
1805 __GLXscreenConfigs * const psc = GetGLXScreenConfigs(dpy, screen);
1807 if ( (pdraw != NULL) && (pdraw->frameTracking != NULL)
1808 && __glXExtensionBitIsEnabled( psc, MESA_swap_frame_usage_bit ) ) {
1809 status = pdraw->frameTracking( dpy, pdraw->private, GL_FALSE );
1819 static GLint __glXGetFrameUsageMESA(Display *dpy, GLXDrawable drawable,
1822 int status = GLX_BAD_CONTEXT;
1823 #ifdef GLX_DIRECT_RENDERING
1825 __DRIdrawable * const pdraw = GetDRIDrawable(dpy, drawable, & screen);
1826 __GLXscreenConfigs * const psc = GetGLXScreenConfigs(dpy, screen);
1828 if ( (pdraw != NULL ) && (pdraw->queryFrameTracking != NULL)
1829 && __glXExtensionBitIsEnabled( psc, MESA_swap_frame_usage_bit ) ) {
1830 int64_t sbc, missedFrames;
1831 float lastMissedUsage;
1833 status = pdraw->queryFrameTracking( dpy, pdraw->private, &sbc,
1834 &missedFrames, &lastMissedUsage,
1846 static GLint __glXQueryFrameTrackingMESA(Display *dpy, GLXDrawable drawable,
1847 int64_t *sbc, int64_t *missedFrames,
1848 GLfloat *lastMissedUsage)
1850 int status = GLX_BAD_CONTEXT;
1851 #ifdef GLX_DIRECT_RENDERING
1853 __DRIdrawable * const pdraw = GetDRIDrawable(dpy, drawable, & screen);
1854 __GLXscreenConfigs * const psc = GetGLXScreenConfigs(dpy, screen);
1856 if ( (pdraw != NULL ) && (pdraw->queryFrameTracking != NULL)
1857 && __glXExtensionBitIsEnabled( psc, MESA_swap_frame_usage_bit ) ) {
1860 status = pdraw->queryFrameTracking( dpy, pdraw->private, sbc,
1861 missedFrames, lastMissedUsage,
1868 (void) missedFrames;
1869 (void) lastMissedUsage;
1876 ** GLX_SGI_video_sync
1878 static int __glXGetVideoSyncSGI(unsigned int *count)
1880 /* FIXME: Looking at the GLX_SGI_video_sync spec in the extension registry,
1881 * FIXME: there should be a GLX encoding for this call. I can find no
1882 * FIXME: documentation for the GLX encoding.
1884 #ifdef GLX_DIRECT_RENDERING
1885 GLXContext gc = __glXGetCurrentContext();
1888 if ( (gc != NULL) && gc->isDirect ) {
1889 __GLXscreenConfigs * const psc = GetGLXScreenConfigs( gc->currentDpy,
1891 if ( __glXExtensionBitIsEnabled( psc, SGI_video_sync_bit )
1892 && psc->driScreen.private && psc->driScreen.getMSC) {
1896 ret = psc->driScreen.getMSC( psc->driScreen.private, & temp );
1897 *count = (unsigned) temp;
1898 return (ret == 0) ? 0 : GLX_BAD_CONTEXT;
1904 return GLX_BAD_CONTEXT;
1907 static int __glXWaitVideoSyncSGI(int divisor, int remainder, unsigned int *count)
1909 #ifdef GLX_DIRECT_RENDERING
1910 GLXContext gc = __glXGetCurrentContext();
1912 if ( divisor <= 0 || remainder < 0 )
1913 return GLX_BAD_VALUE;
1915 if ( (gc != NULL) && gc->isDirect ) {
1916 __GLXscreenConfigs * const psc = GetGLXScreenConfigs( gc->currentDpy,
1918 if ( __glXExtensionBitIsEnabled( psc, SGI_video_sync_bit )
1919 && psc->driScreen.private ) {
1920 __DRIdrawable * const pdraw =
1921 (*psc->driScreen.getDrawable)(gc->currentDpy,
1922 gc->currentDrawable,
1923 psc->driScreen.private);
1924 if ( (pdraw != NULL) && (pdraw->waitForMSC != NULL) ) {
1929 ret = (*pdraw->waitForMSC)( gc->currentDpy, pdraw->private,
1930 0, divisor, remainder,
1932 *count = (unsigned) msc;
1933 return (ret == 0) ? 0 : GLX_BAD_CONTEXT;
1940 return GLX_BAD_CONTEXT;
1945 ** GLX_SGIX_fbconfig
1946 ** Many of these functions are aliased to GLX 1.3 entry points in the
1947 ** GLX_functions table.
1950 PUBLIC GLX_ALIAS(int, glXGetFBConfigAttribSGIX,
1951 (Display *dpy, GLXFBConfigSGIX config, int attribute, int *value),
1952 (dpy, config, attribute, value),
1953 glXGetFBConfigAttrib)
1955 PUBLIC GLX_ALIAS(GLXFBConfigSGIX *, glXChooseFBConfigSGIX,
1956 (Display *dpy, int screen, int *attrib_list, int *nelements),
1957 (dpy, screen, attrib_list, nelements),
1960 PUBLIC GLX_ALIAS(XVisualInfo *, glXGetVisualFromFBConfigSGIX,
1961 (Display * dpy, GLXFBConfigSGIX config),
1963 glXGetVisualFromFBConfig)
1965 PUBLIC GLXPixmap glXCreateGLXPixmapWithConfigSGIX(Display *dpy,
1966 GLXFBConfigSGIX config, Pixmap pixmap)
1968 xGLXVendorPrivateWithReplyReq *vpreq;
1969 xGLXCreateGLXPixmapWithConfigSGIXReq *req;
1970 GLXPixmap xid = None;
1972 const __GLcontextModes * const fbconfig = (__GLcontextModes *) config;
1973 __GLXscreenConfigs * psc;
1976 if ( (dpy == NULL) || (config == NULL) ) {
1980 psc = GetGLXScreenConfigs( dpy, fbconfig->screen );
1982 && __glXExtensionBitIsEnabled( psc, SGIX_fbconfig_bit ) ) {
1983 opcode = __glXSetupForCommand(dpy);
1988 /* Send the glXCreateGLXPixmapWithConfigSGIX request */
1990 GetReqExtra(GLXVendorPrivateWithReply,
1991 sz_xGLXCreateGLXPixmapWithConfigSGIXReq-sz_xGLXVendorPrivateWithReplyReq,vpreq);
1992 req = (xGLXCreateGLXPixmapWithConfigSGIXReq *)vpreq;
1993 req->reqType = opcode;
1994 req->glxCode = X_GLXVendorPrivateWithReply;
1995 req->vendorCode = X_GLXvop_CreateGLXPixmapWithConfigSGIX;
1996 req->screen = fbconfig->screen;
1997 req->fbconfig = fbconfig->fbconfigID;
1998 req->pixmap = pixmap;
1999 req->glxpixmap = xid = XAllocID(dpy);
2007 PUBLIC GLXContext glXCreateContextWithConfigSGIX(Display *dpy,
2008 GLXFBConfigSGIX config, int renderType,
2009 GLXContext shareList, Bool allowDirect)
2011 GLXContext gc = NULL;
2012 const __GLcontextModes * const fbconfig = (__GLcontextModes *) config;
2013 __GLXscreenConfigs * psc;
2016 if ( (dpy == NULL) || (config == NULL) ) {
2020 psc = GetGLXScreenConfigs( dpy, fbconfig->screen );
2022 && __glXExtensionBitIsEnabled( psc, SGIX_fbconfig_bit ) ) {
2023 gc = CreateContext( dpy, NULL, (__GLcontextModes *) config, shareList,
2024 allowDirect, None, False, renderType );
2031 PUBLIC GLXFBConfigSGIX glXGetFBConfigFromVisualSGIX(Display *dpy,
2034 __GLXdisplayPrivate *priv;
2035 __GLXscreenConfigs *psc;
2037 if ( (GetGLXPrivScreenConfig( dpy, vis->screen, & priv, & psc ) != Success)
2038 && __glXExtensionBitIsEnabled( psc, SGIX_fbconfig_bit )
2039 && (psc->configs->fbconfigID != GLX_DONT_CARE) ) {
2040 return (GLXFBConfigSGIX) _gl_context_modes_find_visual( psc->configs,
2049 ** GLX_SGIX_swap_group
2051 static void __glXJoinSwapGroupSGIX(Display *dpy, GLXDrawable drawable,
2061 ** GLX_SGIX_swap_barrier
2063 static void __glXBindSwapBarrierSGIX(Display *dpy, GLXDrawable drawable,
2071 static Bool __glXQueryMaxSwapBarriersSGIX(Display *dpy, int screen, int *max)
2081 ** GLX_OML_sync_control
2083 static Bool __glXGetSyncValuesOML(Display *dpy, GLXDrawable drawable,
2084 int64_t *ust, int64_t *msc, int64_t *sbc)
2086 #ifdef GLX_DIRECT_RENDERING
2087 __GLXdisplayPrivate * const priv = __glXInitialize(dpy);
2089 if ( priv != NULL ) {
2091 __DRIdrawable * const pdraw = GetDRIDrawable( dpy, drawable, & i );
2092 __GLXscreenConfigs * const psc = &priv->screenConfigs[i];
2094 assert( (pdraw == NULL) || (i != -1) );
2095 return ( (pdraw && pdraw->getSBC && psc->driScreen.getMSC)
2096 && __glXExtensionBitIsEnabled( psc, OML_sync_control_bit )
2097 && ((*psc->driScreen.getMSC)( psc->driScreen.private, msc ) == 0)
2098 && ((*pdraw->getSBC)( dpy, psc->driScreen.private, sbc ) == 0)
2099 && (__glXGetUST( ust ) == 0) );
2113 * Determine the refresh rate of the specified drawable and display.
2115 * \param dpy Display whose refresh rate is to be determined.
2116 * \param drawable Drawable whose refresh rate is to be determined.
2117 * \param numerator Numerator of the refresh rate.
2118 * \param demoninator Denominator of the refresh rate.
2119 * \return If the refresh rate for the specified display and drawable could
2120 * be calculated, True is returned. Otherwise False is returned.
2122 * \note This function is implemented entirely client-side. A lot of other
2123 * functionality is required to export GLX_OML_sync_control, so on
2124 * XFree86 this function can be called for direct-rendering contexts
2125 * when GLX_OML_sync_control appears in the client extension string.
2128 Bool __glXGetMscRateOML(Display * dpy, GLXDrawable drawable,
2129 int32_t * numerator, int32_t * denominator)
2131 #if defined( GLX_DIRECT_RENDERING ) && defined( XF86VIDMODE )
2132 __GLXdisplayPrivate * const priv = __glXInitialize(dpy);
2135 if ( priv != NULL ) {
2136 XF86VidModeModeLine mode_line;
2142 GetDRIDrawable( dpy, drawable, & screen_num );
2143 if ( (screen_num != -1)
2144 && XF86VidModeQueryVersion( dpy, & i, & i )
2145 && XF86VidModeGetModeLine( dpy, screen_num, & dot_clock,
2147 unsigned n = dot_clock * 1000;
2148 unsigned d = mode_line.vtotal * mode_line.htotal;
2150 # define V_INTERLACE 0x010
2151 # define V_DBLSCAN 0x020
2153 if ( (mode_line.flags & V_INTERLACE) ) {
2156 else if ( (mode_line.flags & V_DBLSCAN) ) {
2160 /* The OML_sync_control spec requires that if the refresh rate is a
2161 * whole number, that the returned numerator be equal to the refresh
2162 * rate and the denominator be 1.
2165 if ( (n % d) == 0 ) {
2170 static const unsigned f[] = { 13, 11, 7, 5, 3, 2, 0 };
2173 /* This is a poor man's way to reduce a fraction. It's far from
2174 * perfect, but it will work well enough for this situation.
2177 for ( i = 0 ; f[i] != 0 ; i++ ) {
2178 while ( ((n % f[i]) == 0) && ((d % f[i]) == 0) ) {
2202 static int64_t __glXSwapBuffersMscOML(Display *dpy, GLXDrawable drawable,
2203 int64_t target_msc, int64_t divisor,
2206 #ifdef GLX_DIRECT_RENDERING
2208 __DRIdrawable *pdraw = GetDRIDrawable( dpy, drawable, & screen );
2209 __GLXscreenConfigs * const psc = GetGLXScreenConfigs( dpy, screen );
2211 /* The OML_sync_control spec says these should "generate a GLX_BAD_VALUE
2212 * error", but it also says "It [glXSwapBuffersMscOML] will return a value
2213 * of -1 if the function failed because of errors detected in the input
2216 if ( divisor < 0 || remainder < 0 || target_msc < 0 )
2218 if ( divisor > 0 && remainder >= divisor )
2221 if ( (pdraw != NULL) && (pdraw->swapBuffersMSC != NULL)
2222 && __glXExtensionBitIsEnabled( psc, OML_sync_control_bit ) ) {
2223 return (*pdraw->swapBuffersMSC)(dpy, pdraw->private, target_msc,
2224 divisor, remainder);
2237 static Bool __glXWaitForMscOML(Display * dpy, GLXDrawable drawable,
2238 int64_t target_msc, int64_t divisor,
2239 int64_t remainder, int64_t *ust,
2240 int64_t *msc, int64_t *sbc)
2242 #ifdef GLX_DIRECT_RENDERING
2244 __DRIdrawable *pdraw = GetDRIDrawable( dpy, drawable, & screen );
2245 __GLXscreenConfigs * const psc = GetGLXScreenConfigs( dpy, screen );
2248 /* The OML_sync_control spec says these should "generate a GLX_BAD_VALUE
2249 * error", but the return type in the spec is Bool.
2251 if ( divisor < 0 || remainder < 0 || target_msc < 0 )
2253 if ( divisor > 0 && remainder >= divisor )
2256 if ( (pdraw != NULL) && (pdraw->waitForMSC != NULL)
2257 && __glXExtensionBitIsEnabled( psc, OML_sync_control_bit ) ) {
2258 ret = (*pdraw->waitForMSC)( dpy, pdraw->private, target_msc,
2259 divisor, remainder, msc, sbc );
2261 /* __glXGetUST returns zero on success and non-zero on failure.
2262 * This function returns True on success and False on failure.
2264 return ( (ret == 0) && (__glXGetUST( ust ) == 0) );
2280 static Bool __glXWaitForSbcOML(Display * dpy, GLXDrawable drawable,
2281 int64_t target_sbc, int64_t *ust,
2282 int64_t *msc, int64_t *sbc )
2284 #ifdef GLX_DIRECT_RENDERING
2286 __DRIdrawable *pdraw = GetDRIDrawable( dpy, drawable, & screen );
2287 __GLXscreenConfigs * const psc = GetGLXScreenConfigs( dpy, screen );
2290 /* The OML_sync_control spec says this should "generate a GLX_BAD_VALUE
2291 * error", but the return type in the spec is Bool.
2293 if ( target_sbc < 0 )
2296 if ( (pdraw != NULL) && (pdraw->waitForSBC != NULL)
2297 && __glXExtensionBitIsEnabled( psc, OML_sync_control_bit )) {
2298 ret = (*pdraw->waitForSBC)( dpy, pdraw->private, target_sbc, msc, sbc );
2300 /* __glXGetUST returns zero on success and non-zero on failure.
2301 * This function returns True on success and False on failure.
2303 return( (ret == 0) && (__glXGetUST( ust ) == 0) );
2318 * GLX_MESA_allocate_memory
2322 PUBLIC void *glXAllocateMemoryMESA(Display *dpy, int scrn,
2323 size_t size, float readFreq,
2324 float writeFreq, float priority)
2326 #ifdef GLX_DIRECT_RENDERING
2327 __GLXscreenConfigs * const psc = GetGLXScreenConfigs( dpy, scrn );
2329 if ( __glXExtensionBitIsEnabled( psc, MESA_allocate_memory_bit ) ) {
2330 if (psc && psc->driScreen.private && psc->driScreen.allocateMemory) {
2331 return (*psc->driScreen.allocateMemory)( dpy, scrn, size,
2332 readFreq, writeFreq,
2343 #endif /* GLX_DIRECT_RENDERING */
2349 PUBLIC void glXFreeMemoryMESA(Display *dpy, int scrn, void *pointer)
2351 #ifdef GLX_DIRECT_RENDERING
2352 __GLXscreenConfigs * const psc = GetGLXScreenConfigs( dpy, scrn );
2354 if ( __glXExtensionBitIsEnabled( psc, MESA_allocate_memory_bit ) ) {
2355 if (psc && psc->driScreen.private && psc->driScreen.freeMemory) {
2356 (*psc->driScreen.freeMemory)( dpy, scrn, pointer );
2363 #endif /* GLX_DIRECT_RENDERING */
2367 PUBLIC GLuint glXGetMemoryOffsetMESA( Display *dpy, int scrn,
2368 const void *pointer )
2370 #ifdef GLX_DIRECT_RENDERING
2371 __GLXscreenConfigs * const psc = GetGLXScreenConfigs( dpy, scrn );
2373 if ( __glXExtensionBitIsEnabled( psc, MESA_allocate_memory_bit ) ) {
2374 if (psc && psc->driScreen.private && psc->driScreen.memoryOffset) {
2375 return (*psc->driScreen.memoryOffset)( dpy, scrn, pointer );
2382 #endif /* GLX_DIRECT_RENDERING */
2390 * Mesa extension stubs. These will help reduce portability problems.
2395 * Release all buffers associated with the specified GLX drawable.
2398 * This function was intended for stand-alone Mesa. The issue there is that
2399 * the library doesn't get any notification when a window is closed. In
2400 * DRI there is a similar but slightly different issue. When GLX 1.3 is
2401 * supported, there are 3 different functions to destroy a drawable. It
2402 * should be possible to create GLX protocol (or have it determine which
2403 * protocol to use based on the type of the drawable) to have one function
2404 * do the work of 3. For the direct-rendering case, this function could
2405 * just call the driver's \c __DRIdrawableRec::destroyDrawable function.
2406 * This would reduce the frequency with which \c __driGarbageCollectDrawables
2407 * would need to be used. This really should be done as part of the new DRI
2410 * \sa http://oss.sgi.com/projects/ogl-sample/registry/MESA/release_buffers.txt
2411 * __driGarbageCollectDrawables
2412 * glXDestroyGLXPixmap
2413 * glXDestroyPbuffer glXDestroyPixmap glXDestroyWindow
2414 * glXDestroyGLXPbufferSGIX glXDestroyGLXVideoSourceSGIX
2416 static Bool __glXReleaseBuffersMESA( Display *dpy, GLXDrawable d )
2424 PUBLIC GLXPixmap glXCreateGLXPixmapMESA( Display *dpy, XVisualInfo *visual,
2425 Pixmap pixmap, Colormap cmap )
2437 * GLX_MESA_copy_sub_buffer
2439 #define X_GLXvop_CopySubBufferMESA 5154 /* temporary */
2440 static void __glXCopySubBufferMESA(Display *dpy, GLXDrawable drawable,
2441 int x, int y, int width, int height)
2443 xGLXVendorPrivateReq *req;
2446 CARD32 *drawable_ptr;
2447 INT32 *x_ptr, *y_ptr, *w_ptr, *h_ptr;
2450 #ifdef GLX_DIRECT_RENDERING
2452 __DRIdrawable *pdraw = GetDRIDrawable( dpy, drawable, & screen );
2453 if ( pdraw != NULL ) {
2454 __GLXscreenConfigs * const psc = GetGLXScreenConfigs( dpy, screen );
2455 if ( __glXExtensionBitIsEnabled( psc, MESA_copy_sub_buffer_bit ) ) {
2456 (*pdraw->copySubBuffer)(dpy, pdraw->private, x, y, width, height);
2463 opcode = __glXSetupForCommand(dpy);
2468 ** The calling thread may or may not have a current context. If it
2469 ** does, send the context tag so the server can do a flush.
2471 gc = __glXGetCurrentContext();
2472 if ((gc != NULL) && (dpy == gc->currentDpy) &&
2473 ((drawable == gc->currentDrawable) ||
2474 (drawable == gc->currentReadable)) ) {
2475 tag = gc->currentContextTag;
2481 GetReqExtra(GLXVendorPrivate, sizeof(CARD32) + sizeof(INT32) * 4,req);
2482 req->reqType = opcode;
2483 req->glxCode = X_GLXVendorPrivate;
2484 req->vendorCode = X_GLXvop_CopySubBufferMESA;
2485 req->contextTag = tag;
2487 drawable_ptr = (CARD32 *) (req + 1);
2488 x_ptr = (INT32 *) (drawable_ptr + 1);
2489 y_ptr = (INT32 *) (drawable_ptr + 2);
2490 w_ptr = (INT32 *) (drawable_ptr + 3);
2491 h_ptr = (INT32 *) (drawable_ptr + 4);
2493 *drawable_ptr = drawable;
2505 * GLX_EXT_texture_from_pixmap
2508 static void __glXBindTexImageEXT(Display *dpy,
2509 GLXDrawable drawable,
2511 const int *attrib_list)
2513 xGLXVendorPrivateReq *req;
2514 GLXContext gc = __glXGetCurrentContext();
2515 CARD32 *drawable_ptr;
2517 CARD32 *num_attrib_ptr;
2527 while (attrib_list[i * 2] != None)
2531 #ifdef GLX_DIRECT_RENDERING
2536 opcode = __glXSetupForCommand(dpy);
2541 GetReqExtra(GLXVendorPrivate, 12 + 8 * i,req);
2542 req->reqType = opcode;
2543 req->glxCode = X_GLXVendorPrivate;
2544 req->vendorCode = X_GLXvop_BindTexImageEXT;
2545 req->contextTag = gc->currentContextTag;
2547 drawable_ptr = (CARD32 *) (req + 1);
2548 buffer_ptr = (INT32 *) (drawable_ptr + 1);
2549 num_attrib_ptr = (CARD32 *) (buffer_ptr + 1);
2550 attrib_ptr = (CARD32 *) (num_attrib_ptr + 1);
2552 *drawable_ptr = drawable;
2553 *buffer_ptr = buffer;
2554 *num_attrib_ptr = (CARD32) i;
2558 while (attrib_list[i * 2] != None)
2560 *attrib_ptr++ = (CARD32) attrib_list[i * 2 + 0];
2561 *attrib_ptr++ = (CARD32) attrib_list[i * 2 + 1];
2570 static void __glXReleaseTexImageEXT(Display *dpy,
2571 GLXDrawable drawable,
2574 xGLXVendorPrivateReq *req;
2575 GLXContext gc = __glXGetCurrentContext();
2576 CARD32 *drawable_ptr;
2583 #ifdef GLX_DIRECT_RENDERING
2588 opcode = __glXSetupForCommand(dpy);
2593 GetReqExtra(GLXVendorPrivate, sizeof(CARD32)+sizeof(INT32),req);
2594 req->reqType = opcode;
2595 req->glxCode = X_GLXVendorPrivate;
2596 req->vendorCode = X_GLXvop_ReleaseTexImageEXT;
2597 req->contextTag = gc->currentContextTag;
2599 drawable_ptr = (CARD32 *) (req + 1);
2600 buffer_ptr = (INT32 *) (drawable_ptr + 1);
2602 *drawable_ptr = drawable;
2603 *buffer_ptr = buffer;
2611 * \c strdup is actually not a standard ANSI C or POSIX routine.
2612 * Irix will not define it if ANSI mode is in effect.
2617 __glXstrdup(const char *str)
2620 copy = (char *) Xmalloc(strlen(str) + 1);
2628 ** glXGetProcAddress support
2631 struct name_address_pair {
2636 #define GLX_FUNCTION(f) { # f, (GLvoid *) f }
2637 #define GLX_FUNCTION2(n,f) { # n, (GLvoid *) f }
2639 static const struct name_address_pair GLX_functions[] = {
2640 /*** GLX_VERSION_1_0 ***/
2641 GLX_FUNCTION( glXChooseVisual ),
2642 GLX_FUNCTION( glXCopyContext ),
2643 GLX_FUNCTION( glXCreateContext ),
2644 GLX_FUNCTION( glXCreateGLXPixmap ),
2645 GLX_FUNCTION( glXDestroyContext ),
2646 GLX_FUNCTION( glXDestroyGLXPixmap ),
2647 GLX_FUNCTION( glXGetConfig ),
2648 GLX_FUNCTION( glXGetCurrentContext ),
2649 GLX_FUNCTION( glXGetCurrentDrawable ),
2650 GLX_FUNCTION( glXIsDirect ),
2651 GLX_FUNCTION( glXMakeCurrent ),
2652 GLX_FUNCTION( glXQueryExtension ),
2653 GLX_FUNCTION( glXQueryVersion ),
2654 GLX_FUNCTION( glXSwapBuffers ),
2655 GLX_FUNCTION( glXUseXFont ),
2656 GLX_FUNCTION( glXWaitGL ),
2657 GLX_FUNCTION( glXWaitX ),
2659 /*** GLX_VERSION_1_1 ***/
2660 GLX_FUNCTION( glXGetClientString ),
2661 GLX_FUNCTION( glXQueryExtensionsString ),
2662 GLX_FUNCTION( glXQueryServerString ),
2664 /*** GLX_VERSION_1_2 ***/
2665 GLX_FUNCTION( glXGetCurrentDisplay ),
2667 /*** GLX_VERSION_1_3 ***/
2668 GLX_FUNCTION( glXChooseFBConfig ),
2669 GLX_FUNCTION( glXCreateNewContext ),
2670 GLX_FUNCTION( glXCreatePbuffer ),
2671 GLX_FUNCTION( glXCreatePixmap ),
2672 GLX_FUNCTION( glXCreateWindow ),
2673 GLX_FUNCTION( glXDestroyPbuffer ),
2674 GLX_FUNCTION( glXDestroyPixmap ),
2675 GLX_FUNCTION( glXDestroyWindow ),
2676 GLX_FUNCTION( glXGetCurrentReadDrawable ),
2677 GLX_FUNCTION( glXGetFBConfigAttrib ),
2678 GLX_FUNCTION( glXGetFBConfigs ),
2679 GLX_FUNCTION( glXGetSelectedEvent ),
2680 GLX_FUNCTION( glXGetVisualFromFBConfig ),
2681 GLX_FUNCTION( glXMakeContextCurrent ),
2682 GLX_FUNCTION( glXQueryContext ),
2683 GLX_FUNCTION( glXQueryDrawable ),
2684 GLX_FUNCTION( glXSelectEvent ),
2686 /*** GLX_SGI_swap_control ***/
2687 GLX_FUNCTION2( glXSwapIntervalSGI, __glXSwapIntervalSGI ),
2689 /*** GLX_SGI_video_sync ***/
2690 GLX_FUNCTION2( glXGetVideoSyncSGI, __glXGetVideoSyncSGI ),
2691 GLX_FUNCTION2( glXWaitVideoSyncSGI, __glXWaitVideoSyncSGI ),
2693 /*** GLX_SGI_make_current_read ***/
2694 GLX_FUNCTION2( glXMakeCurrentReadSGI, glXMakeContextCurrent ),
2695 GLX_FUNCTION2( glXGetCurrentReadDrawableSGI, glXGetCurrentReadDrawable ),
2697 /*** GLX_EXT_import_context ***/
2698 GLX_FUNCTION( glXFreeContextEXT ),
2699 GLX_FUNCTION( glXGetContextIDEXT ),
2700 GLX_FUNCTION2( glXGetCurrentDisplayEXT, glXGetCurrentDisplay ),
2701 GLX_FUNCTION( glXImportContextEXT ),
2702 GLX_FUNCTION2( glXQueryContextInfoEXT, glXQueryContext ),
2704 /*** GLX_SGIX_fbconfig ***/
2705 GLX_FUNCTION2( glXGetFBConfigAttribSGIX, glXGetFBConfigAttrib ),
2706 GLX_FUNCTION2( glXChooseFBConfigSGIX, glXChooseFBConfig ),
2707 GLX_FUNCTION( glXCreateGLXPixmapWithConfigSGIX ),
2708 GLX_FUNCTION( glXCreateContextWithConfigSGIX ),
2709 GLX_FUNCTION2( glXGetVisualFromFBConfigSGIX, glXGetVisualFromFBConfig ),
2710 GLX_FUNCTION( glXGetFBConfigFromVisualSGIX ),
2712 /*** GLX_SGIX_pbuffer ***/
2713 GLX_FUNCTION( glXCreateGLXPbufferSGIX ),
2714 GLX_FUNCTION( glXDestroyGLXPbufferSGIX ),
2715 GLX_FUNCTION( glXQueryGLXPbufferSGIX ),
2716 GLX_FUNCTION( glXSelectEventSGIX ),
2717 GLX_FUNCTION( glXGetSelectedEventSGIX ),
2719 /*** GLX_SGIX_swap_group ***/
2720 GLX_FUNCTION2( glXJoinSwapGroupSGIX, __glXJoinSwapGroupSGIX ),
2722 /*** GLX_SGIX_swap_barrier ***/
2723 GLX_FUNCTION2( glXBindSwapBarrierSGIX, __glXBindSwapBarrierSGIX ),
2724 GLX_FUNCTION2( glXQueryMaxSwapBarriersSGIX, __glXQueryMaxSwapBarriersSGIX ),
2726 /*** GLX_MESA_allocate_memory ***/
2727 GLX_FUNCTION( glXAllocateMemoryMESA ),
2728 GLX_FUNCTION( glXFreeMemoryMESA ),
2729 GLX_FUNCTION( glXGetMemoryOffsetMESA ),
2731 /*** GLX_MESA_copy_sub_buffer ***/
2732 GLX_FUNCTION2( glXCopySubBufferMESA, __glXCopySubBufferMESA ),
2734 /*** GLX_MESA_pixmap_colormap ***/
2735 GLX_FUNCTION( glXCreateGLXPixmapMESA ),
2737 /*** GLX_MESA_release_buffers ***/
2738 GLX_FUNCTION2( glXReleaseBuffersMESA, __glXReleaseBuffersMESA ),
2740 /*** GLX_MESA_swap_control ***/
2741 GLX_FUNCTION2( glXSwapIntervalMESA, __glXSwapIntervalMESA ),
2742 GLX_FUNCTION2( glXGetSwapIntervalMESA, __glXGetSwapIntervalMESA ),
2744 /*** GLX_MESA_swap_frame_usage ***/
2745 GLX_FUNCTION2( glXBeginFrameTrackingMESA, __glXBeginFrameTrackingMESA ),
2746 GLX_FUNCTION2( glXEndFrameTrackingMESA, __glXEndFrameTrackingMESA ),
2747 GLX_FUNCTION2( glXGetFrameUsageMESA, __glXGetFrameUsageMESA ),
2748 GLX_FUNCTION2( glXQueryFrameTrackingMESA, __glXQueryFrameTrackingMESA ),
2750 /*** GLX_ARB_get_proc_address ***/
2751 GLX_FUNCTION( glXGetProcAddressARB ),
2754 GLX_FUNCTION2( glXGetProcAddress, glXGetProcAddressARB ),
2756 /*** GLX_OML_sync_control ***/
2757 GLX_FUNCTION2( glXWaitForSbcOML, __glXWaitForSbcOML ),
2758 GLX_FUNCTION2( glXWaitForMscOML, __glXWaitForMscOML ),
2759 GLX_FUNCTION2( glXSwapBuffersMscOML, __glXSwapBuffersMscOML ),
2760 GLX_FUNCTION2( glXGetMscRateOML, __glXGetMscRateOML ),
2761 GLX_FUNCTION2( glXGetSyncValuesOML, __glXGetSyncValuesOML ),
2763 /*** GLX_EXT_texture_from_pixmap ***/
2764 GLX_FUNCTION2( glXBindTexImageEXT, __glXBindTexImageEXT ),
2765 GLX_FUNCTION2( glXReleaseTexImageEXT, __glXReleaseTexImageEXT ),
2767 #ifdef GLX_DIRECT_RENDERING
2768 /*** DRI configuration ***/
2769 GLX_FUNCTION( glXGetScreenDriver ),
2770 GLX_FUNCTION( glXGetDriverConfig ),
2773 { NULL, NULL } /* end of list */
2777 static const GLvoid *
2778 get_glx_proc_address(const char *funcName)
2782 /* try static functions */
2783 for (i = 0; GLX_functions[i].Name; i++) {
2784 if (strcmp(GLX_functions[i].Name, funcName) == 0)
2785 return GLX_functions[i].Address;
2793 * Get the address of a named GL function. This is the pre-GLX 1.4 name for
2794 * \c glXGetProcAddress.
2796 * \param procName Name of a GL or GLX function.
2797 * \returns A pointer to the named function
2799 * \sa glXGetProcAddress
2801 PUBLIC void (*glXGetProcAddressARB(const GLubyte *procName))( void )
2803 typedef void (*gl_function)( void );
2807 /* Search the table of GLX and internal functions first. If that
2808 * fails and the supplied name could be a valid core GL name, try
2809 * searching the core GL function table. This check is done to prevent
2810 * DRI based drivers from searching the core GL function table for
2811 * internal API functions.
2814 f = (gl_function) get_glx_proc_address((const char *) procName);
2815 if ( (f == NULL) && (procName[0] == 'g') && (procName[1] == 'l')
2816 && (procName[2] != 'X') ) {
2817 f = (gl_function) _glapi_get_proc_address((const char *) procName);
2824 * Get the address of a named GL function. This is the GLX 1.4 name for
2825 * \c glXGetProcAddressARB.
2827 * \param procName Name of a GL or GLX function.
2828 * \returns A pointer to the named function
2830 * \sa glXGetProcAddressARB
2832 PUBLIC void (*glXGetProcAddress(const GLubyte *procName))( void )
2833 #if defined(__GNUC__) && !defined(GLX_ALIAS_UNSUPPORTED)
2834 __attribute__ ((alias ("glXGetProcAddressARB")));
2837 return glXGetProcAddressARB(procName);
2839 #endif /* __GNUC__ */
2842 #ifdef GLX_DIRECT_RENDERING
2844 * Retrieves the verion of the internal libGL API in YYYYMMDD format. This
2845 * might be used by the DRI drivers to determine how new libGL is at runtime.
2846 * Drivers should not call this function directly. They should instead use
2847 * \c glXGetProcAddress to obtain a pointer to the function.
2849 * \returns An 8-digit decimal number representing the internal libGL API in
2852 * \sa glXGetProcAddress, PFNGLXGETINTERNALVERSIONPROC
2854 * \since Internal API version 20021121.
2856 int __glXGetInternalVersion(void)
2859 * 20021121 - Initial version
2860 * 20021128 - Added __glXWindowExists() function
2861 * 20021207 - Added support for dynamic GLX extensions,
2862 * GLX_SGI_swap_control, GLX_SGI_video_sync,
2863 * GLX_OML_sync_control, and GLX_MESA_swap_control.
2864 * Never officially released. Do NOT test against
2865 * this version. Use 20030317 instead.
2866 * 20030317 - Added support GLX_SGIX_fbconfig,
2867 * GLX_MESA_swap_frame_usage, GLX_OML_swap_method,
2868 * GLX_{ARB,SGIS}_multisample, and
2869 * GLX_SGIX_visual_select_group.
2870 * 20030606 - Added support for GLX_SGI_make_current_read.
2871 * 20030813 - Made support for dynamic extensions multi-head aware.
2872 * 20030818 - Added support for GLX_MESA_allocate_memory in place of the
2873 * deprecated GLX_NV_vertex_array_range & GLX_MESA_agp_offset
2875 * 20031201 - Added support for the first round of DRI interface changes.
2876 * Do NOT test against this version! It has binary
2877 * compatibility bugs, use 20040317 instead.
2878 * 20040317 - Added the 'mode' field to __DRIcontextRec.
2879 * 20040415 - Added support for bindContext3 and unbindContext3.
2880 * 20040602 - Add __glXGetDrawableInfo. I though that was there
2882 * 20050727 - Gut all the old interfaces. This breaks compatability with
2883 * any DRI driver built to any previous version.
2884 * 20060314 - Added support for GLX_MESA_copy_sub_buffer.
2885 * 20070105 - Added support for damage reporting.
2892 static Bool windowExistsFlag;
2894 static int windowExistsErrorHandler(Display *dpy, XErrorEvent *xerr)
2896 if (xerr->error_code == BadWindow) {
2897 windowExistsFlag = GL_FALSE;
2903 * Determine if a window associated with a \c GLXDrawable exists on the
2904 * X-server. This function is not used internally by libGL. It is provided
2905 * as a utility function for DRI drivers.
2906 * Drivers should not call this function directly. They should instead use
2907 * \c glXGetProcAddress to obtain a pointer to the function.
2909 * \param dpy Display associated with the drawable to be queried.
2910 * \param draw \c GLXDrawable to test.
2912 * \returns \c GL_TRUE if a window exists that is associated with \c draw,
2913 * otherwise \c GL_FALSE is returned.
2915 * \warning This function is not currently thread-safe.
2917 * \sa glXGetProcAddress
2919 * \since Internal API version 20021128.
2921 Bool __glXWindowExists(Display *dpy, GLXDrawable draw)
2923 XWindowAttributes xwa;
2924 int (*oldXErrorHandler)(Display *, XErrorEvent *);
2926 XSync(dpy, GL_FALSE);
2927 windowExistsFlag = GL_TRUE;
2928 oldXErrorHandler = XSetErrorHandler(windowExistsErrorHandler);
2929 XGetWindowAttributes(dpy, draw, &xwa); /* dummy request */
2930 XSetErrorHandler(oldXErrorHandler);
2931 return windowExistsFlag;
2936 * Get the unadjusted system time (UST). Currently, the UST is measured in
2937 * microseconds since Epoc. The actual resolution of the UST may vary from
2938 * system to system, and the units may vary from release to release.
2939 * Drivers should not call this function directly. They should instead use
2940 * \c glXGetProcAddress to obtain a pointer to the function.
2942 * \param ust Location to store the 64-bit UST
2943 * \returns Zero on success or a negative errno value on failure.
2945 * \sa glXGetProcAddress, PFNGLXGETUSTPROC
2947 * \since Internal API version 20030317.
2949 int __glXGetUST( int64_t * ust )
2953 if ( ust == NULL ) {
2957 if ( gettimeofday( & tv, NULL ) == 0 ) {
2958 ust[0] = (tv.tv_sec * 1000000) + tv.tv_usec;
2964 #endif /* GLX_DIRECT_RENDERING */