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
) {
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 glx_context_init(struct glx_context
*gc
,
229 struct glx_screen
*psc
, struct glx_config
*config
)
231 gc
->majorOpcode
= __glXSetupForCommand(psc
->display
->dpy
);
232 if (!gc
->majorOpcode
)
235 gc
->screen
= psc
->scr
;
238 gc
->isDirect
= GL_TRUE
;
239 gc
->currentContextTag
= -1;
246 * Create a new context.
248 * \param renderType For FBConfigs, what is the rendering type?
252 CreateContext(Display
*dpy
, int generic_id
, struct glx_config
*config
,
253 GLXContext shareList_user
, Bool allowDirect
,
254 unsigned code
, int renderType
, int screen
)
256 struct glx_context
*gc
;
257 struct glx_screen
*psc
;
258 struct glx_context
*shareList
= (struct glx_context
*) shareList_user
;
262 psc
= GetGLXScreenConfigs(dpy
, screen
);
266 if (generic_id
== None
)
270 #ifdef GLX_USE_APPLEGL
271 gc
= applegl_create_context(psc
, config
, shareList
, renderType
);
273 if (allowDirect
&& psc
->vtable
->create_context
)
274 gc
= psc
->vtable
->create_context(psc
, config
, shareList
, renderType
);
276 gc
= indirect_create_context(psc
, config
, shareList
, renderType
);
283 case X_GLXCreateContext
: {
284 xGLXCreateContextReq
*req
;
286 /* Send the glXCreateContext request */
287 GetReq(GLXCreateContext
, req
);
288 req
->reqType
= gc
->majorOpcode
;
289 req
->glxCode
= X_GLXCreateContext
;
290 req
->context
= gc
->xid
= XAllocID(dpy
);
291 req
->visual
= generic_id
;
292 req
->screen
= screen
;
293 req
->shareList
= shareList
? shareList
->xid
: None
;
294 req
->isDirect
= gc
->isDirect
;
298 case X_GLXCreateNewContext
: {
299 xGLXCreateNewContextReq
*req
;
301 /* Send the glXCreateNewContext request */
302 GetReq(GLXCreateNewContext
, req
);
303 req
->reqType
= gc
->majorOpcode
;
304 req
->glxCode
= X_GLXCreateNewContext
;
305 req
->context
= gc
->xid
= XAllocID(dpy
);
306 req
->fbconfig
= generic_id
;
307 req
->screen
= screen
;
308 req
->renderType
= renderType
;
309 req
->shareList
= shareList
? shareList
->xid
: None
;
310 req
->isDirect
= gc
->isDirect
;
314 case X_GLXvop_CreateContextWithConfigSGIX
: {
315 xGLXVendorPrivateWithReplyReq
*vpreq
;
316 xGLXCreateContextWithConfigSGIXReq
*req
;
318 /* Send the glXCreateNewContext request */
319 GetReqExtra(GLXVendorPrivateWithReply
,
320 sz_xGLXCreateContextWithConfigSGIXReq
-
321 sz_xGLXVendorPrivateWithReplyReq
, vpreq
);
322 req
= (xGLXCreateContextWithConfigSGIXReq
*) vpreq
;
323 req
->reqType
= gc
->majorOpcode
;
324 req
->glxCode
= X_GLXVendorPrivateWithReply
;
325 req
->vendorCode
= X_GLXvop_CreateContextWithConfigSGIX
;
326 req
->context
= gc
->xid
= XAllocID(dpy
);
327 req
->fbconfig
= generic_id
;
328 req
->screen
= screen
;
329 req
->renderType
= renderType
;
330 req
->shareList
= shareList
? shareList
->xid
: None
;
331 req
->isDirect
= gc
->isDirect
;
336 /* What to do here? This case is the sign of an internal error. It
337 * should never be reachable.
345 gc
->share_xid
= shareList
? shareList
->xid
: None
;
346 gc
->imported
= GL_FALSE
;
347 gc
->renderType
= renderType
;
349 return (GLXContext
) gc
;
353 glXCreateContext(Display
* dpy
, XVisualInfo
* vis
,
354 GLXContext shareList
, Bool allowDirect
)
356 struct glx_config
*config
= NULL
;
359 #if defined(GLX_DIRECT_RENDERING) || defined(GLX_USE_APPLEGL)
360 struct glx_screen
*const psc
= GetGLXScreenConfigs(dpy
, vis
->screen
);
362 config
= glx_config_find_visual(psc
->visuals
, vis
->visualid
);
363 if (config
== NULL
) {
366 error
.errorCode
= BadValue
;
367 error
.resourceID
= vis
->visualid
;
368 error
.sequenceNumber
= dpy
->request
;
369 error
.type
= X_Error
;
370 error
.majorCode
= __glXSetupForCommand(dpy
);
371 error
.minorCode
= X_GLXCreateContext
;
372 _XError(dpy
, &error
);
376 renderType
= config
->rgbMode
? GLX_RGBA_TYPE
: GLX_COLOR_INDEX_TYPE
;
379 return CreateContext(dpy
, vis
->visualid
, config
, shareList
, allowDirect
,
380 X_GLXCreateContext
, renderType
, vis
->screen
);
384 glx_send_destroy_context(Display
*dpy
, XID xid
)
386 CARD8 opcode
= __glXSetupForCommand(dpy
);
387 xGLXDestroyContextReq
*req
;
390 GetReq(GLXDestroyContext
, req
);
391 req
->reqType
= opcode
;
392 req
->glxCode
= X_GLXDestroyContext
;
399 ** Destroy the named context
403 glXDestroyContext(Display
* dpy
, GLXContext ctx
)
405 struct glx_context
*gc
= (struct glx_context
*) ctx
;
407 if (gc
== NULL
|| gc
->xid
== None
)
412 glx_send_destroy_context(dpy
, gc
->xid
);
414 if (gc
->currentDpy
) {
415 /* This context is bound to some thread. According to the man page,
416 * we should not actually delete the context until it's unbound.
417 * Note that we set gc->xid = None above. In MakeContextCurrent()
418 * we check for that and delete the context there.
422 gc
->vtable
->destroy(gc
);
428 ** Return the major and minor version #s for the GLX extension
431 glXQueryVersion(Display
* dpy
, int *major
, int *minor
)
433 struct glx_display
*priv
;
435 /* Init the extension. This fetches the major and minor version. */
436 priv
= __glXInitialize(dpy
);
441 *major
= priv
->majorVersion
;
443 *minor
= priv
->minorVersion
;
448 ** Query the existance of the GLX extension
451 glXQueryExtension(Display
* dpy
, int *errorBase
, int *eventBase
)
453 int major_op
, erb
, evb
;
456 rv
= XQueryExtension(dpy
, GLX_EXTENSION_NAME
, &major_op
, &evb
, &erb
);
467 ** Put a barrier in the token stream that forces the GL to finish its
468 ** work before X can proceed.
473 struct glx_context
*gc
= __glXGetCurrentContext();
475 if (gc
&& gc
->vtable
->wait_gl
)
476 gc
->vtable
->wait_gl(gc
);
480 ** Put a barrier in the token stream that forces X to finish its
481 ** work before GL can proceed.
486 struct glx_context
*gc
= __glXGetCurrentContext();
488 if (gc
&& gc
->vtable
->wait_x
)
489 gc
->vtable
->wait_x(gc
);
493 glXUseXFont(Font font
, int first
, int count
, int listBase
)
495 struct glx_context
*gc
= __glXGetCurrentContext();
497 if (gc
&& gc
->vtable
->use_x_font
)
498 gc
->vtable
->use_x_font(gc
, font
, first
, count
, listBase
);
501 /************************************************************************/
504 ** Copy the source context to the destination context using the
508 glXCopyContext(Display
* dpy
, GLXContext source_user
,
509 GLXContext dest_user
, unsigned long mask
)
511 struct glx_context
*source
= (struct glx_context
*) source_user
;
512 struct glx_context
*dest
= (struct glx_context
*) dest_user
;
513 #ifdef GLX_USE_APPLEGL
514 struct glx_context
*gc
= __glXGetCurrentContext();
518 if(apple_glx_copy_context(gc
->driContext
, source
->driContext
, dest
->driContext
,
519 mask
, &errorcode
, &x11error
)) {
520 __glXSendError(dpy
, errorcode
, 0, X_GLXCopyContext
, x11error
);
524 xGLXCopyContextReq
*req
;
525 struct glx_context
*gc
= __glXGetCurrentContext();
529 opcode
= __glXSetupForCommand(dpy
);
534 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
536 /* NOT_DONE: This does not work yet */
541 ** If the source is the current context, send its tag so that the context
542 ** can be flushed before the copy.
544 if (source
== gc
&& dpy
== gc
->currentDpy
) {
545 tag
= gc
->currentContextTag
;
551 /* Send the glXCopyContext request */
553 GetReq(GLXCopyContext
, req
);
554 req
->reqType
= opcode
;
555 req
->glxCode
= X_GLXCopyContext
;
556 req
->source
= source
? source
->xid
: None
;
557 req
->dest
= dest
? dest
->xid
: None
;
559 req
->contextTag
= tag
;
562 #endif /* GLX_USE_APPLEGL */
567 * Determine if a context uses direct rendering.
569 * \param dpy Display where the context was created.
570 * \param contextID ID of the context to be tested.
572 * \returns \c GL_TRUE if the context is direct rendering or not.
575 __glXIsDirect(Display
* dpy
, GLXContextID contextID
)
579 opcode
= __glXSetupForCommand(dpy
);
584 xcb_connection_t
*c
= XGetXCBConnection(dpy
);
585 xcb_generic_error_t
*err
;
586 xcb_glx_is_direct_reply_t
*reply
= xcb_glx_is_direct_reply(c
,
591 const Bool is_direct
= (reply
!= NULL
&& reply
->is_direct
) ? True
: False
;
594 __glXSendErrorForXcb(dpy
, err
);
605 * Shouldn't this function \b always return \c GL_FALSE when
606 * \c GLX_DIRECT_RENDERING is not defined? Do we really need to bother with
607 * the GLX protocol here at all?
610 glXIsDirect(Display
* dpy
, GLXContext gc_user
)
612 struct glx_context
*gc
= (struct glx_context
*) gc_user
;
617 else if (gc
->isDirect
) {
620 #ifdef GLX_USE_APPLEGL /* TODO: indirect on darwin */
623 return __glXIsDirect(dpy
, gc
->xid
);
628 glXCreateGLXPixmap(Display
* dpy
, XVisualInfo
* vis
, Pixmap pixmap
)
630 #ifdef GLX_USE_APPLEGL
631 int screen
= vis
->screen
;
632 struct glx_screen
*const psc
= GetGLXScreenConfigs(dpy
, screen
);
633 const struct glx_config
*config
;
635 config
= glx_config_find_visual(psc
->visuals
, vis
->visualid
);
637 if(apple_glx_pixmap_create(dpy
, vis
->screen
, pixmap
, config
))
642 xGLXCreateGLXPixmapReq
*req
;
643 struct glx_drawable
*glxDraw
;
647 opcode
= __glXSetupForCommand(dpy
);
652 glxDraw
= malloc(sizeof(*glxDraw
));
656 /* Send the glXCreateGLXPixmap request */
658 GetReq(GLXCreateGLXPixmap
, req
);
659 req
->reqType
= opcode
;
660 req
->glxCode
= X_GLXCreateGLXPixmap
;
661 req
->screen
= vis
->screen
;
662 req
->visual
= vis
->visualid
;
663 req
->pixmap
= pixmap
;
664 req
->glxpixmap
= xid
= XAllocID(dpy
);
668 if (InitGLXDrawable(dpy
, glxDraw
, pixmap
, req
->glxpixmap
)) {
673 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
675 /* FIXME: Maybe delay __DRIdrawable creation until the drawable
676 * is actually bound to a context... */
678 struct glx_display
*const priv
= __glXInitialize(dpy
);
679 __GLXDRIdrawable
*pdraw
;
680 struct glx_screen
*psc
;
681 struct glx_config
*config
;
683 psc
= priv
->screens
[vis
->screen
];
684 if (psc
->driScreen
== NULL
)
687 config
= glx_config_find_visual(psc
->visuals
, vis
->visualid
);
688 pdraw
= psc
->driScreen
->createDrawable(psc
, pixmap
, xid
, config
);
690 fprintf(stderr
, "failed to create pixmap\n");
695 if (__glxHashInsert(priv
->drawHash
, xid
, pdraw
)) {
696 (*pdraw
->destroyDrawable
) (pdraw
);
703 xGLXDestroyGLXPixmapReq
*dreq
;
705 GetReq(GLXDestroyGLXPixmap
, dreq
);
706 dreq
->reqType
= opcode
;
707 dreq
->glxCode
= X_GLXDestroyGLXPixmap
;
708 dreq
->glxpixmap
= xid
;
719 ** Destroy the named pixmap
722 glXDestroyGLXPixmap(Display
* dpy
, GLXPixmap glxpixmap
)
724 #ifdef GLX_USE_APPLEGL
725 if(apple_glx_pixmap_destroy(dpy
, glxpixmap
))
726 __glXSendError(dpy
, GLXBadPixmap
, glxpixmap
, X_GLXDestroyPixmap
, false);
728 xGLXDestroyGLXPixmapReq
*req
;
731 opcode
= __glXSetupForCommand(dpy
);
736 /* Send the glXDestroyGLXPixmap request */
738 GetReq(GLXDestroyGLXPixmap
, req
);
739 req
->reqType
= opcode
;
740 req
->glxCode
= X_GLXDestroyGLXPixmap
;
741 req
->glxpixmap
= glxpixmap
;
745 DestroyGLXDrawable(dpy
, glxpixmap
);
747 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
749 struct glx_display
*const priv
= __glXInitialize(dpy
);
750 __GLXDRIdrawable
*pdraw
= GetGLXDRIDrawable(dpy
, glxpixmap
);
753 (*pdraw
->destroyDrawable
) (pdraw
);
754 __glxHashDelete(priv
->drawHash
, glxpixmap
);
758 #endif /* GLX_USE_APPLEGL */
762 glXSwapBuffers(Display
* dpy
, GLXDrawable drawable
)
764 #ifdef GLX_USE_APPLEGL
765 struct glx_context
* gc
= __glXGetCurrentContext();
766 if(gc
&& apple_glx_is_current_drawable(dpy
, gc
->driContext
, drawable
)) {
767 apple_glx_swap_buffers(gc
->driContext
);
769 __glXSendError(dpy
, GLXBadCurrentWindow
, 0, X_GLXSwapBuffers
, false);
772 struct glx_context
*gc
;
777 gc
= __glXGetCurrentContext();
779 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
781 __GLXDRIdrawable
*pdraw
= GetGLXDRIDrawable(dpy
, drawable
);
784 Bool flush
= gc
&& drawable
== gc
->currentDrawable
;
786 (*pdraw
->psc
->driScreen
->swapBuffers
)(pdraw
, 0, 0, 0, flush
);
792 opcode
= __glXSetupForCommand(dpy
);
798 ** The calling thread may or may not have a current context. If it
799 ** does, send the context tag so the server can do a flush.
801 if ((gc
!= NULL
) && (dpy
== gc
->currentDpy
) &&
802 ((drawable
== gc
->currentDrawable
)
803 || (drawable
== gc
->currentReadable
))) {
804 tag
= gc
->currentContextTag
;
810 c
= XGetXCBConnection(dpy
);
811 xcb_glx_swap_buffers(c
, tag
, drawable
);
813 #endif /* GLX_USE_APPLEGL */
818 ** Return configuration information for the given display, screen and
819 ** visual combination.
822 glXGetConfig(Display
* dpy
, XVisualInfo
* vis
, int attribute
,
825 struct glx_display
*priv
;
826 struct glx_screen
*psc
;
827 struct glx_config
*config
;
830 status
= GetGLXPrivScreenConfig(dpy
, vis
->screen
, &priv
, &psc
);
831 if (status
== Success
) {
832 config
= glx_config_find_visual(psc
->visuals
, vis
->visualid
);
834 /* Lookup attribute after first finding a match on the visual */
835 if (config
!= NULL
) {
836 return glx_config_get(config
, attribute
, value_return
);
839 status
= GLX_BAD_VISUAL
;
843 ** If we can't find the config for this visual, this visual is not
844 ** supported by the OpenGL implementation on the server.
846 if ((status
== GLX_BAD_VISUAL
) && (attribute
== GLX_USE_GL
)) {
847 *value_return
= GL_FALSE
;
854 /************************************************************************/
857 init_fbconfig_for_chooser(struct glx_config
* config
,
858 GLboolean fbconfig_style_tags
)
860 memset(config
, 0, sizeof(struct glx_config
));
861 config
->visualID
= (XID
) GLX_DONT_CARE
;
862 config
->visualType
= GLX_DONT_CARE
;
864 /* glXChooseFBConfig specifies different defaults for these two than
867 if (fbconfig_style_tags
) {
868 config
->rgbMode
= GL_TRUE
;
869 config
->doubleBufferMode
= GLX_DONT_CARE
;
872 config
->visualRating
= GLX_DONT_CARE
;
873 config
->transparentPixel
= GLX_NONE
;
874 config
->transparentRed
= GLX_DONT_CARE
;
875 config
->transparentGreen
= GLX_DONT_CARE
;
876 config
->transparentBlue
= GLX_DONT_CARE
;
877 config
->transparentAlpha
= GLX_DONT_CARE
;
878 config
->transparentIndex
= GLX_DONT_CARE
;
880 config
->drawableType
= GLX_WINDOW_BIT
;
882 (config
->rgbMode
) ? GLX_RGBA_BIT
: GLX_COLOR_INDEX_BIT
;
883 config
->xRenderable
= GLX_DONT_CARE
;
884 config
->fbconfigID
= (GLXFBConfigID
) (GLX_DONT_CARE
);
886 config
->swapMethod
= GLX_DONT_CARE
;
889 #define MATCH_DONT_CARE( param ) \
891 if ( ((int) a-> param != (int) GLX_DONT_CARE) \
892 && (a-> param != b-> param) ) { \
897 #define MATCH_MINIMUM( param ) \
899 if ( ((int) a-> param != (int) GLX_DONT_CARE) \
900 && (a-> param > b-> param) ) { \
905 #define MATCH_EXACT( param ) \
907 if ( a-> param != b-> param) { \
912 /* Test that all bits from a are contained in b */
913 #define MATCH_MASK(param) \
915 if ( ((int) a-> param != (int) GLX_DONT_CARE) \
916 && ((a->param & ~b->param) != 0) ) { \
922 * Determine if two GLXFBConfigs are compatible.
924 * \param a Application specified config to test.
925 * \param b Server specified config to test against \c a.
928 fbconfigs_compatible(const struct glx_config
* const a
,
929 const struct glx_config
* const b
)
931 MATCH_DONT_CARE(doubleBufferMode
);
932 MATCH_DONT_CARE(visualType
);
933 MATCH_DONT_CARE(visualRating
);
934 MATCH_DONT_CARE(xRenderable
);
935 MATCH_DONT_CARE(fbconfigID
);
936 MATCH_DONT_CARE(swapMethod
);
938 MATCH_MINIMUM(rgbBits
);
939 MATCH_MINIMUM(numAuxBuffers
);
940 MATCH_MINIMUM(redBits
);
941 MATCH_MINIMUM(greenBits
);
942 MATCH_MINIMUM(blueBits
);
943 MATCH_MINIMUM(alphaBits
);
944 MATCH_MINIMUM(depthBits
);
945 MATCH_MINIMUM(stencilBits
);
946 MATCH_MINIMUM(accumRedBits
);
947 MATCH_MINIMUM(accumGreenBits
);
948 MATCH_MINIMUM(accumBlueBits
);
949 MATCH_MINIMUM(accumAlphaBits
);
950 MATCH_MINIMUM(sampleBuffers
);
951 MATCH_MINIMUM(maxPbufferWidth
);
952 MATCH_MINIMUM(maxPbufferHeight
);
953 MATCH_MINIMUM(maxPbufferPixels
);
954 MATCH_MINIMUM(samples
);
956 MATCH_DONT_CARE(stereoMode
);
959 MATCH_MASK(drawableType
);
960 MATCH_MASK(renderType
);
962 /* There is a bug in a few of the XFree86 DDX drivers. They contain
963 * visuals with a "transparent type" of 0 when they really mean GLX_NONE.
964 * Technically speaking, it is a bug in the DDX driver, but there is
965 * enough of an installed base to work around the problem here. In any
966 * case, 0 is not a valid value of the transparent type, so we'll treat 0
967 * from the app as GLX_DONT_CARE. We'll consider GLX_NONE from the app and
968 * 0 from the server to be a match to maintain backward compatibility with
969 * the (broken) drivers.
972 if (a
->transparentPixel
!= (int) GLX_DONT_CARE
&& a
->transparentPixel
!= 0) {
973 if (a
->transparentPixel
== GLX_NONE
) {
974 if (b
->transparentPixel
!= GLX_NONE
&& b
->transparentPixel
!= 0)
978 MATCH_EXACT(transparentPixel
);
981 switch (a
->transparentPixel
) {
982 case GLX_TRANSPARENT_RGB
:
983 MATCH_DONT_CARE(transparentRed
);
984 MATCH_DONT_CARE(transparentGreen
);
985 MATCH_DONT_CARE(transparentBlue
);
986 MATCH_DONT_CARE(transparentAlpha
);
989 case GLX_TRANSPARENT_INDEX
:
990 MATCH_DONT_CARE(transparentIndex
);
1002 /* There's some trickly language in the GLX spec about how this is supposed
1003 * to work. Basically, if a given component size is either not specified
1004 * or the requested size is zero, it is supposed to act like PERFER_SMALLER.
1005 * Well, that's really hard to do with the code as-is. This behavior is
1006 * closer to correct, but still not technically right.
1008 #define PREFER_LARGER_OR_ZERO(comp) \
1010 if ( ((*a)-> comp) != ((*b)-> comp) ) { \
1011 if ( ((*a)-> comp) == 0 ) { \
1014 else if ( ((*b)-> comp) == 0 ) { \
1018 return ((*b)-> comp) - ((*a)-> comp) ; \
1023 #define PREFER_LARGER(comp) \
1025 if ( ((*a)-> comp) != ((*b)-> comp) ) { \
1026 return ((*b)-> comp) - ((*a)-> comp) ; \
1030 #define PREFER_SMALLER(comp) \
1032 if ( ((*a)-> comp) != ((*b)-> comp) ) { \
1033 return ((*a)-> comp) - ((*b)-> comp) ; \
1038 * Compare two GLXFBConfigs. This function is intended to be used as the
1039 * compare function passed in to qsort.
1041 * \returns If \c a is a "better" config, according to the specification of
1042 * SGIX_fbconfig, a number less than zero is returned. If \c b is
1043 * better, then a number greater than zero is return. If both are
1044 * equal, zero is returned.
1045 * \sa qsort, glXChooseVisual, glXChooseFBConfig, glXChooseFBConfigSGIX
1048 fbconfig_compare(struct glx_config
**a
, struct glx_config
**b
)
1050 /* The order of these comparisons must NOT change. It is defined by
1051 * the GLX 1.3 spec and ARB_multisample.
1054 PREFER_SMALLER(visualSelectGroup
);
1056 /* The sort order for the visualRating is GLX_NONE, GLX_SLOW, and
1057 * GLX_NON_CONFORMANT_CONFIG. It just so happens that this is the
1058 * numerical sort order of the enums (0x8000, 0x8001, and 0x800D).
1060 PREFER_SMALLER(visualRating
);
1062 /* This isn't quite right. It is supposed to compare the sum of the
1063 * components the user specifically set minimums for.
1065 PREFER_LARGER_OR_ZERO(redBits
);
1066 PREFER_LARGER_OR_ZERO(greenBits
);
1067 PREFER_LARGER_OR_ZERO(blueBits
);
1068 PREFER_LARGER_OR_ZERO(alphaBits
);
1070 PREFER_SMALLER(rgbBits
);
1072 if (((*a
)->doubleBufferMode
!= (*b
)->doubleBufferMode
)) {
1073 /* Prefer single-buffer.
1075 return (!(*a
)->doubleBufferMode
) ? -1 : 1;
1078 PREFER_SMALLER(numAuxBuffers
);
1080 PREFER_LARGER_OR_ZERO(depthBits
);
1081 PREFER_SMALLER(stencilBits
);
1083 /* This isn't quite right. It is supposed to compare the sum of the
1084 * components the user specifically set minimums for.
1086 PREFER_LARGER_OR_ZERO(accumRedBits
);
1087 PREFER_LARGER_OR_ZERO(accumGreenBits
);
1088 PREFER_LARGER_OR_ZERO(accumBlueBits
);
1089 PREFER_LARGER_OR_ZERO(accumAlphaBits
);
1091 PREFER_SMALLER(visualType
);
1093 /* None of the multisample specs say where this comparison should happen,
1094 * so I put it near the end.
1096 PREFER_SMALLER(sampleBuffers
);
1097 PREFER_SMALLER(samples
);
1099 /* None of the pbuffer or fbconfig specs say that this comparison needs
1100 * to happen at all, but it seems like it should.
1102 PREFER_LARGER(maxPbufferWidth
);
1103 PREFER_LARGER(maxPbufferHeight
);
1104 PREFER_LARGER(maxPbufferPixels
);
1111 * Selects and sorts a subset of the supplied configs based on the attributes.
1112 * This function forms to basis of \c glXChooseVisual, \c glXChooseFBConfig,
1113 * and \c glXChooseFBConfigSGIX.
1115 * \param configs Array of pointers to possible configs. The elements of
1116 * this array that do not meet the criteria will be set to
1117 * NULL. The remaining elements will be sorted according to
1118 * the various visual / FBConfig selection rules.
1119 * \param num_configs Number of elements in the \c configs array.
1120 * \param attribList Attributes used select from \c configs. This array is
1121 * terminated by a \c None tag. The array can either take
1122 * the form expected by \c glXChooseVisual (where boolean
1123 * tags do not have a value) or by \c glXChooseFBConfig
1124 * (where every tag has a value).
1125 * \param fbconfig_style_tags Selects whether \c attribList is in
1126 * \c glXChooseVisual style or
1127 * \c glXChooseFBConfig style.
1128 * \returns The number of valid elements left in \c configs.
1130 * \sa glXChooseVisual, glXChooseFBConfig, glXChooseFBConfigSGIX
1133 choose_visual(struct glx_config
** configs
, int num_configs
,
1134 const int *attribList
, GLboolean fbconfig_style_tags
)
1136 struct glx_config test_config
;
1140 /* This is a fairly direct implementation of the selection method
1141 * described by GLX_SGIX_fbconfig. Start by culling out all the
1142 * configs that are not compatible with the selected parameter
1146 init_fbconfig_for_chooser(&test_config
, fbconfig_style_tags
);
1147 __glXInitializeVisualConfigFromTags(&test_config
, 512,
1148 (const INT32
*) attribList
,
1149 GL_TRUE
, fbconfig_style_tags
);
1152 for (i
= 0; i
< num_configs
; i
++) {
1153 if (fbconfigs_compatible(&test_config
, configs
[i
])) {
1154 configs
[base
] = configs
[i
];
1163 if (base
< num_configs
) {
1164 (void) memset(&configs
[base
], 0, sizeof(void *) * (num_configs
- base
));
1167 /* After the incompatible configs are removed, the resulting
1168 * list is sorted according to the rules set out in the various
1172 qsort(configs
, base
, sizeof(struct glx_config
*),
1173 (int (*)(const void *, const void *)) fbconfig_compare
);
1181 ** Return the visual that best matches the template. Return None if no
1182 ** visual matches the template.
1184 _X_EXPORT XVisualInfo
*
1185 glXChooseVisual(Display
* dpy
, int screen
, int *attribList
)
1187 XVisualInfo
*visualList
= NULL
;
1188 struct glx_display
*priv
;
1189 struct glx_screen
*psc
;
1190 struct glx_config test_config
;
1191 struct glx_config
*config
;
1192 struct glx_config
*best_config
= NULL
;
1195 ** Get a list of all visuals, return if list is empty
1197 if (GetGLXPrivScreenConfig(dpy
, screen
, &priv
, &psc
) != Success
) {
1203 ** Build a template from the defaults and the attribute list
1204 ** Free visual list and return if an unexpected token is encountered
1206 init_fbconfig_for_chooser(&test_config
, GL_FALSE
);
1207 __glXInitializeVisualConfigFromTags(&test_config
, 512,
1208 (const INT32
*) attribList
,
1212 ** Eliminate visuals that don't meet minimum requirements
1213 ** Compute a score for those that do
1214 ** Remember which visual, if any, got the highest score
1215 ** If no visual is acceptable, return None
1216 ** Otherwise, create an XVisualInfo list with just the selected X visual
1219 for (config
= psc
->visuals
; config
!= NULL
; config
= config
->next
) {
1220 if (fbconfigs_compatible(&test_config
, config
)
1221 && ((best_config
== NULL
) ||
1222 (fbconfig_compare (&config
, &best_config
) < 0))) {
1223 XVisualInfo visualTemplate
;
1224 XVisualInfo
*newList
;
1227 visualTemplate
.screen
= screen
;
1228 visualTemplate
.visualid
= config
->visualID
;
1229 newList
= XGetVisualInfo(dpy
, VisualScreenMask
| VisualIDMask
,
1230 &visualTemplate
, &i
);
1234 visualList
= newList
;
1235 best_config
= config
;
1240 #ifdef GLX_USE_APPLEGL
1241 if(visualList
&& getenv("LIBGL_DUMP_VISUALID")) {
1242 printf("visualid 0x%lx\n", visualList
[0].visualid
);
1250 _X_EXPORT
const char *
1251 glXQueryExtensionsString(Display
* dpy
, int screen
)
1253 struct glx_screen
*psc
;
1254 struct glx_display
*priv
;
1256 if (GetGLXPrivScreenConfig(dpy
, screen
, &priv
, &psc
) != Success
) {
1260 if (!psc
->effectiveGLXexts
) {
1261 if (!psc
->serverGLXexts
) {
1262 psc
->serverGLXexts
=
1263 __glXQueryServerString(dpy
, priv
->majorOpcode
, screen
,
1267 __glXCalculateUsableExtensions(psc
,
1268 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
1269 (psc
->driScreen
!= NULL
),
1273 priv
->minorVersion
);
1276 return psc
->effectiveGLXexts
;
1279 _X_EXPORT
const char *
1280 glXGetClientString(Display
* dpy
, int name
)
1286 return (__glXGLXClientVendorName
);
1288 return (__glXGLXClientVersion
);
1289 case GLX_EXTENSIONS
:
1290 return (__glXGetClientExtensions());
1296 _X_EXPORT
const char *
1297 glXQueryServerString(Display
* dpy
, int screen
, int name
)
1299 struct glx_screen
*psc
;
1300 struct glx_display
*priv
;
1304 if (GetGLXPrivScreenConfig(dpy
, screen
, &priv
, &psc
) != Success
) {
1310 str
= &priv
->serverGLXvendor
;
1313 str
= &priv
->serverGLXversion
;
1315 case GLX_EXTENSIONS
:
1316 str
= &psc
->serverGLXexts
;
1323 *str
= __glXQueryServerString(dpy
, priv
->majorOpcode
, screen
, name
);
1330 __glXClientInfo(Display
* dpy
, int opcode
)
1332 char *ext_str
= __glXGetClientGLExtensionString();
1333 int size
= strlen(ext_str
) + 1;
1335 xcb_connection_t
*c
= XGetXCBConnection(dpy
);
1336 xcb_glx_client_info(c
,
1337 GLX_MAJOR_VERSION
, GLX_MINOR_VERSION
, size
, ext_str
);
1344 ** EXT_import_context
1348 glXGetCurrentDisplay(void)
1350 struct glx_context
*gc
= __glXGetCurrentContext();
1353 return gc
->currentDpy
;
1357 GLX_ALIAS(Display
*, glXGetCurrentDisplayEXT
, (void), (),
1358 glXGetCurrentDisplay
)
1360 #ifndef GLX_USE_APPLEGL
1361 _X_EXPORT GLXContext
1362 glXImportContextEXT(Display
*dpy
, GLXContextID contextID
)
1364 struct glx_display
*priv
= __glXInitialize(dpy
);
1365 struct glx_screen
*psc
= NULL
;
1366 xGLXQueryContextReply reply
;
1368 struct glx_context
*ctx
;
1370 /* This GLX implementation knows about 5 different properties, so
1371 * allow the server to send us one of each.
1373 int propList
[5 * 2], *pProp
, nPropListBytes
;
1377 struct glx_config
*mode
;
1378 uint32_t fbconfigID
= 0;
1379 uint32_t visualID
= 0;
1380 uint32_t screen
= 0;
1381 Bool got_screen
= False
;
1383 /* The GLX_EXT_import_context spec says:
1385 * "If <contextID> does not refer to a valid context, then a BadContext
1386 * error is generated; if <contextID> refers to direct rendering
1387 * context then no error is generated but glXImportContextEXT returns
1390 * If contextID is None, generate BadContext on the client-side. Other
1391 * sorts of invalid contexts will be detected by the server in the
1392 * __glXIsDirect call.
1394 if (contextID
== None
) {
1395 __glXSendError(dpy
, GLXBadContext
, contextID
, X_GLXIsDirect
, false);
1399 if (__glXIsDirect(dpy
, contextID
))
1402 opcode
= __glXSetupForCommand(dpy
);
1406 /* Send the glXQueryContextInfoEXT request */
1409 if (priv
->majorVersion
> 1 || priv
->minorVersion
>= 3) {
1410 xGLXQueryContextReq
*req
;
1412 GetReq(GLXQueryContext
, req
);
1414 req
->reqType
= opcode
;
1415 req
->glxCode
= X_GLXQueryContext
;
1416 req
->context
= contextID
;
1419 xGLXVendorPrivateReq
*vpreq
;
1420 xGLXQueryContextInfoEXTReq
*req
;
1422 GetReqExtra(GLXVendorPrivate
,
1423 sz_xGLXQueryContextInfoEXTReq
- sz_xGLXVendorPrivateReq
,
1425 req
= (xGLXQueryContextInfoEXTReq
*) vpreq
;
1426 req
->reqType
= opcode
;
1427 req
->glxCode
= X_GLXVendorPrivateWithReply
;
1428 req
->vendorCode
= X_GLXvop_QueryContextInfoEXT
;
1429 req
->context
= contextID
;
1432 _XReply(dpy
, (xReply
*) & reply
, 0, False
);
1434 if (reply
.n
<= __GLX_MAX_CONTEXT_PROPS
)
1435 nPropListBytes
= reply
.n
* 2 * sizeof propList
[0];
1438 _XRead(dpy
, (char *) propList
, nPropListBytes
);
1442 numProps
= nPropListBytes
/ (2 * sizeof(propList
[0]));
1448 for (i
= 0, pProp
= propList
; i
< numProps
; i
++, pProp
+= 2)
1454 case GLX_SHARE_CONTEXT_EXT
:
1457 case GLX_VISUAL_ID_EXT
:
1458 visualID
= pProp
[1];
1460 case GLX_FBCONFIG_ID
:
1461 fbconfigID
= pProp
[1];
1463 case GLX_RENDER_TYPE
:
1464 renderType
= pProp
[1];
1471 psc
= GetGLXScreenConfigs(dpy
, screen
);
1475 if (fbconfigID
!= 0) {
1476 mode
= glx_config_find_fbconfig(psc
->configs
, fbconfigID
);
1477 } else if (visualID
!= 0) {
1478 mode
= glx_config_find_visual(psc
->visuals
, visualID
);
1484 ctx
= indirect_create_context(psc
, mode
, NULL
, renderType
);
1488 ctx
->xid
= contextID
;
1489 ctx
->imported
= GL_TRUE
;
1490 ctx
->share_xid
= share
;
1492 return (GLXContext
) ctx
;
1498 glXQueryContext(Display
* dpy
, GLXContext ctx_user
, int attribute
, int *value
)
1500 struct glx_context
*ctx
= (struct glx_context
*) ctx_user
;
1502 switch (attribute
) {
1503 case GLX_SHARE_CONTEXT_EXT
:
1504 *value
= ctx
->share_xid
;
1506 case GLX_VISUAL_ID_EXT
:
1507 *value
= ctx
->config
? ctx
->config
->visualID
: None
;
1510 *value
= ctx
->screen
;
1512 case GLX_FBCONFIG_ID
:
1513 *value
= ctx
->config
? ctx
->config
->fbconfigID
: None
;
1515 case GLX_RENDER_TYPE
:
1516 *value
= ctx
->renderType
;
1519 return GLX_BAD_ATTRIBUTE
;
1525 GLX_ALIAS(int, glXQueryContextInfoEXT
,
1526 (Display
* dpy
, GLXContext ctx
, int attribute
, int *value
),
1527 (dpy
, ctx
, attribute
, value
), glXQueryContext
)
1529 _X_EXPORT GLXContextID
glXGetContextIDEXT(const GLXContext ctx_user
)
1531 struct glx_context
*ctx
= (struct glx_context
*) ctx_user
;
1533 return (ctx
== NULL
) ? None
: ctx
->xid
;
1537 glXFreeContextEXT(Display
*dpy
, GLXContext ctx
)
1539 struct glx_context
*gc
= (struct glx_context
*) ctx
;
1541 if (gc
== NULL
|| gc
->xid
== None
)
1544 /* The GLX_EXT_import_context spec says:
1546 * "glXFreeContext does not free the server-side context information or
1547 * the XID associated with the server-side context."
1549 * Don't send any protocol. Just destroy the client-side tracking of the
1550 * context. Also, only release the context structure if it's not current.
1553 if (gc
->currentDpy
) {
1556 gc
->vtable
->destroy(gc
);
1561 _X_EXPORT GLXFBConfig
*
1562 glXChooseFBConfig(Display
* dpy
, int screen
,
1563 const int *attribList
, int *nitems
)
1565 struct glx_config
**config_list
;
1569 config_list
= (struct glx_config
**)
1570 glXGetFBConfigs(dpy
, screen
, &list_size
);
1572 if ((config_list
!= NULL
) && (list_size
> 0) && (attribList
!= NULL
)) {
1573 list_size
= choose_visual(config_list
, list_size
, attribList
, GL_TRUE
);
1574 if (list_size
== 0) {
1580 *nitems
= list_size
;
1581 return (GLXFBConfig
*) config_list
;
1585 _X_EXPORT GLXContext
1586 glXCreateNewContext(Display
* dpy
, GLXFBConfig fbconfig
,
1587 int renderType
, GLXContext shareList
, Bool allowDirect
)
1589 struct glx_config
*config
= (struct glx_config
*) fbconfig
;
1591 return CreateContext(dpy
, config
->fbconfigID
, config
, shareList
,
1592 allowDirect
, X_GLXCreateNewContext
, renderType
,
1597 _X_EXPORT GLXDrawable
1598 glXGetCurrentReadDrawable(void)
1600 struct glx_context
*gc
= __glXGetCurrentContext();
1602 return gc
->currentReadable
;
1606 _X_EXPORT GLXFBConfig
*
1607 glXGetFBConfigs(Display
* dpy
, int screen
, int *nelements
)
1609 struct glx_display
*priv
= __glXInitialize(dpy
);
1610 struct glx_config
**config_list
= NULL
;
1611 struct glx_config
*config
;
1612 unsigned num_configs
= 0;
1616 if (priv
&& (priv
->screens
!= NULL
)
1617 && (screen
>= 0) && (screen
<= ScreenCount(dpy
))
1618 && (priv
->screens
[screen
]->configs
!= NULL
)
1619 && (priv
->screens
[screen
]->configs
->fbconfigID
1620 != (int) GLX_DONT_CARE
)) {
1622 for (config
= priv
->screens
[screen
]->configs
; config
!= NULL
;
1623 config
= config
->next
) {
1624 if (config
->fbconfigID
!= (int) GLX_DONT_CARE
) {
1629 config_list
= malloc(num_configs
* sizeof *config_list
);
1630 if (config_list
!= NULL
) {
1631 *nelements
= num_configs
;
1633 for (config
= priv
->screens
[screen
]->configs
; config
!= NULL
;
1634 config
= config
->next
) {
1635 if (config
->fbconfigID
!= (int) GLX_DONT_CARE
) {
1636 config_list
[i
] = config
;
1643 return (GLXFBConfig
*) config_list
;
1648 glXGetFBConfigAttrib(Display
* dpy
, GLXFBConfig fbconfig
,
1649 int attribute
, int *value
)
1651 struct glx_config
*config
= ValidateGLXFBConfig(dpy
, fbconfig
);
1654 return GLXBadFBConfig
;
1656 return glx_config_get(config
, attribute
, value
);
1660 _X_EXPORT XVisualInfo
*
1661 glXGetVisualFromFBConfig(Display
* dpy
, GLXFBConfig fbconfig
)
1663 XVisualInfo visualTemplate
;
1664 struct glx_config
*config
= (struct glx_config
*) fbconfig
;
1668 ** Get a list of all visuals, return if list is empty
1670 visualTemplate
.visualid
= config
->visualID
;
1671 return XGetVisualInfo(dpy
, VisualIDMask
, &visualTemplate
, &count
);
1674 #ifndef GLX_USE_APPLEGL
1676 ** GLX_SGI_swap_control
1679 __glXSwapIntervalSGI(int interval
)
1681 xGLXVendorPrivateReq
*req
;
1682 struct glx_context
*gc
= __glXGetCurrentContext();
1683 struct glx_screen
*psc
;
1685 CARD32
*interval_ptr
;
1689 return GLX_BAD_CONTEXT
;
1692 if (interval
<= 0) {
1693 return GLX_BAD_VALUE
;
1696 psc
= GetGLXScreenConfigs( gc
->currentDpy
, gc
->screen
);
1698 #ifdef GLX_DIRECT_RENDERING
1699 if (gc
->isDirect
&& psc
->driScreen
&& psc
->driScreen
->setSwapInterval
) {
1700 __GLXDRIdrawable
*pdraw
=
1701 GetGLXDRIDrawable(gc
->currentDpy
, gc
->currentDrawable
);
1702 psc
->driScreen
->setSwapInterval(pdraw
, interval
);
1707 dpy
= gc
->currentDpy
;
1708 opcode
= __glXSetupForCommand(dpy
);
1713 /* Send the glXSwapIntervalSGI request */
1715 GetReqExtra(GLXVendorPrivate
, sizeof(CARD32
), req
);
1716 req
->reqType
= opcode
;
1717 req
->glxCode
= X_GLXVendorPrivate
;
1718 req
->vendorCode
= X_GLXvop_SwapIntervalSGI
;
1719 req
->contextTag
= gc
->currentContextTag
;
1721 interval_ptr
= (CARD32
*) (req
+ 1);
1722 *interval_ptr
= interval
;
1733 ** GLX_MESA_swap_control
1736 __glXSwapIntervalMESA(unsigned int interval
)
1738 #ifdef GLX_DIRECT_RENDERING
1739 struct glx_context
*gc
= __glXGetCurrentContext();
1741 if (gc
!= NULL
&& gc
->isDirect
) {
1742 struct glx_screen
*psc
;
1744 psc
= GetGLXScreenConfigs( gc
->currentDpy
, gc
->screen
);
1745 if (psc
->driScreen
&& psc
->driScreen
->setSwapInterval
) {
1746 __GLXDRIdrawable
*pdraw
=
1747 GetGLXDRIDrawable(gc
->currentDpy
, gc
->currentDrawable
);
1748 return psc
->driScreen
->setSwapInterval(pdraw
, interval
);
1753 return GLX_BAD_CONTEXT
;
1758 __glXGetSwapIntervalMESA(void)
1760 #ifdef GLX_DIRECT_RENDERING
1761 struct glx_context
*gc
= __glXGetCurrentContext();
1763 if (gc
!= NULL
&& gc
->isDirect
) {
1764 struct glx_screen
*psc
;
1766 psc
= GetGLXScreenConfigs( gc
->currentDpy
, gc
->screen
);
1767 if (psc
->driScreen
&& psc
->driScreen
->getSwapInterval
) {
1768 __GLXDRIdrawable
*pdraw
=
1769 GetGLXDRIDrawable(gc
->currentDpy
, gc
->currentDrawable
);
1770 return psc
->driScreen
->getSwapInterval(pdraw
);
1780 ** GLX_SGI_video_sync
1783 __glXGetVideoSyncSGI(unsigned int *count
)
1785 int64_t ust
, msc
, sbc
;
1787 struct glx_context
*gc
= __glXGetCurrentContext();
1788 struct glx_screen
*psc
;
1789 #ifdef GLX_DIRECT_RENDERING
1790 __GLXDRIdrawable
*pdraw
;
1794 return GLX_BAD_CONTEXT
;
1796 #ifdef GLX_DIRECT_RENDERING
1798 return GLX_BAD_CONTEXT
;
1801 psc
= GetGLXScreenConfigs(gc
->currentDpy
, gc
->screen
);
1802 #ifdef GLX_DIRECT_RENDERING
1803 pdraw
= GetGLXDRIDrawable(gc
->currentDpy
, gc
->currentDrawable
);
1806 /* FIXME: Looking at the GLX_SGI_video_sync spec in the extension registry,
1807 * FIXME: there should be a GLX encoding for this call. I can find no
1808 * FIXME: documentation for the GLX encoding.
1810 #ifdef GLX_DIRECT_RENDERING
1811 if (psc
->driScreen
&& psc
->driScreen
->getDrawableMSC
) {
1812 ret
= psc
->driScreen
->getDrawableMSC(psc
, pdraw
, &ust
, &msc
, &sbc
);
1813 *count
= (unsigned) msc
;
1814 return (ret
== True
) ? 0 : GLX_BAD_CONTEXT
;
1818 return GLX_BAD_CONTEXT
;
1822 __glXWaitVideoSyncSGI(int divisor
, int remainder
, unsigned int *count
)
1824 struct glx_context
*gc
= __glXGetCurrentContext();
1825 struct glx_screen
*psc
;
1826 #ifdef GLX_DIRECT_RENDERING
1827 __GLXDRIdrawable
*pdraw
;
1829 int64_t ust
, msc
, sbc
;
1832 if (divisor
<= 0 || remainder
< 0)
1833 return GLX_BAD_VALUE
;
1836 return GLX_BAD_CONTEXT
;
1838 #ifdef GLX_DIRECT_RENDERING
1840 return GLX_BAD_CONTEXT
;
1843 psc
= GetGLXScreenConfigs( gc
->currentDpy
, gc
->screen
);
1844 #ifdef GLX_DIRECT_RENDERING
1845 pdraw
= GetGLXDRIDrawable(gc
->currentDpy
, gc
->currentDrawable
);
1848 #ifdef GLX_DIRECT_RENDERING
1849 if (psc
->driScreen
&& psc
->driScreen
->waitForMSC
) {
1850 ret
= psc
->driScreen
->waitForMSC(pdraw
, 0, divisor
, remainder
, &ust
, &msc
,
1852 *count
= (unsigned) msc
;
1853 return (ret
== True
) ? 0 : GLX_BAD_CONTEXT
;
1857 return GLX_BAD_CONTEXT
;
1860 #endif /* GLX_USE_APPLEGL */
1863 ** GLX_SGIX_fbconfig
1864 ** Many of these functions are aliased to GLX 1.3 entry points in the
1865 ** GLX_functions table.
1869 GLX_ALIAS(int, glXGetFBConfigAttribSGIX
,
1870 (Display
* dpy
, GLXFBConfigSGIX config
, int attribute
, int *value
),
1871 (dpy
, config
, attribute
, value
), glXGetFBConfigAttrib
)
1873 _X_EXPORT
GLX_ALIAS(GLXFBConfigSGIX
*, glXChooseFBConfigSGIX
,
1874 (Display
* dpy
, int screen
, int *attrib_list
,
1875 int *nelements
), (dpy
, screen
, attrib_list
, nelements
),
1878 _X_EXPORT
GLX_ALIAS(XVisualInfo
*, glXGetVisualFromFBConfigSGIX
,
1879 (Display
* dpy
, GLXFBConfigSGIX config
),
1880 (dpy
, config
), glXGetVisualFromFBConfig
)
1883 glXCreateGLXPixmapWithConfigSGIX(Display
* dpy
,
1884 GLXFBConfigSGIX fbconfig
,
1887 #ifndef GLX_USE_APPLEGL
1888 xGLXVendorPrivateWithReplyReq
*vpreq
;
1889 xGLXCreateGLXPixmapWithConfigSGIXReq
*req
;
1890 GLXPixmap xid
= None
;
1892 struct glx_screen
*psc
;
1894 struct glx_config
*config
= (struct glx_config
*) fbconfig
;
1897 if ((dpy
== NULL
) || (config
== NULL
)) {
1900 #ifdef GLX_USE_APPLEGL
1901 if(apple_glx_pixmap_create(dpy
, config
->screen
, pixmap
, config
))
1906 psc
= GetGLXScreenConfigs(dpy
, config
->screen
);
1908 && __glXExtensionBitIsEnabled(psc
, SGIX_fbconfig_bit
)) {
1909 opcode
= __glXSetupForCommand(dpy
);
1914 /* Send the glXCreateGLXPixmapWithConfigSGIX request */
1916 GetReqExtra(GLXVendorPrivateWithReply
,
1917 sz_xGLXCreateGLXPixmapWithConfigSGIXReq
-
1918 sz_xGLXVendorPrivateWithReplyReq
, vpreq
);
1919 req
= (xGLXCreateGLXPixmapWithConfigSGIXReq
*) vpreq
;
1920 req
->reqType
= opcode
;
1921 req
->glxCode
= X_GLXVendorPrivateWithReply
;
1922 req
->vendorCode
= X_GLXvop_CreateGLXPixmapWithConfigSGIX
;
1923 req
->screen
= config
->screen
;
1924 req
->fbconfig
= config
->fbconfigID
;
1925 req
->pixmap
= pixmap
;
1926 req
->glxpixmap
= xid
= XAllocID(dpy
);
1935 _X_EXPORT GLXContext
1936 glXCreateContextWithConfigSGIX(Display
* dpy
,
1937 GLXFBConfigSGIX fbconfig
, int renderType
,
1938 GLXContext shareList
, Bool allowDirect
)
1940 GLXContext gc
= NULL
;
1941 struct glx_config
*config
= (struct glx_config
*) fbconfig
;
1942 struct glx_screen
*psc
;
1945 if ((dpy
== NULL
) || (config
== NULL
)) {
1949 psc
= GetGLXScreenConfigs(dpy
, config
->screen
);
1951 && __glXExtensionBitIsEnabled(psc
, SGIX_fbconfig_bit
)) {
1952 gc
= CreateContext(dpy
, config
->fbconfigID
, config
, shareList
,
1954 X_GLXvop_CreateContextWithConfigSGIX
, renderType
,
1962 _X_EXPORT GLXFBConfigSGIX
1963 glXGetFBConfigFromVisualSGIX(Display
* dpy
, XVisualInfo
* vis
)
1965 struct glx_display
*priv
;
1966 struct glx_screen
*psc
= NULL
;
1968 if ((GetGLXPrivScreenConfig(dpy
, vis
->screen
, &priv
, &psc
) == Success
)
1969 && __glXExtensionBitIsEnabled(psc
, SGIX_fbconfig_bit
)
1970 && (psc
->configs
->fbconfigID
!= (int) GLX_DONT_CARE
)) {
1971 return (GLXFBConfigSGIX
) glx_config_find_visual(psc
->configs
,
1978 #ifndef GLX_USE_APPLEGL
1980 ** GLX_SGIX_swap_group
1983 __glXJoinSwapGroupSGIX(Display
* dpy
, GLXDrawable drawable
,
1993 ** GLX_SGIX_swap_barrier
1996 __glXBindSwapBarrierSGIX(Display
* dpy
, GLXDrawable drawable
, int barrier
)
2004 __glXQueryMaxSwapBarriersSGIX(Display
* dpy
, int screen
, int *max
)
2014 ** GLX_OML_sync_control
2017 __glXGetSyncValuesOML(Display
* dpy
, GLXDrawable drawable
,
2018 int64_t * ust
, int64_t * msc
, int64_t * sbc
)
2020 struct glx_display
* const priv
= __glXInitialize(dpy
);
2022 #ifdef GLX_DIRECT_RENDERING
2023 __GLXDRIdrawable
*pdraw
;
2025 struct glx_screen
*psc
;
2030 #ifdef GLX_DIRECT_RENDERING
2031 pdraw
= GetGLXDRIDrawable(dpy
, drawable
);
2032 psc
= pdraw
? pdraw
->psc
: NULL
;
2033 if (pdraw
&& psc
->driScreen
->getDrawableMSC
) {
2034 ret
= psc
->driScreen
->getDrawableMSC(psc
, pdraw
, ust
, msc
, sbc
);
2042 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
2044 __glxGetMscRate(__GLXDRIdrawable
*glxDraw
,
2045 int32_t * numerator
, int32_t * denominator
)
2048 struct glx_screen
*psc
;
2049 XF86VidModeModeLine mode_line
;
2054 if (XF86VidModeQueryVersion(psc
->dpy
, &i
, &i
) &&
2055 XF86VidModeGetModeLine(psc
->dpy
, psc
->scr
, &dot_clock
, &mode_line
)) {
2056 unsigned n
= dot_clock
* 1000;
2057 unsigned d
= mode_line
.vtotal
* mode_line
.htotal
;
2059 # define V_INTERLACE 0x010
2060 # define V_DBLSCAN 0x020
2062 if (mode_line
.flags
& V_INTERLACE
)
2064 else if (mode_line
.flags
& V_DBLSCAN
)
2067 /* The OML_sync_control spec requires that if the refresh rate is a
2068 * whole number, that the returned numerator be equal to the refresh
2069 * rate and the denominator be 1.
2077 static const unsigned f
[] = { 13, 11, 7, 5, 3, 2, 0 };
2079 /* This is a poor man's way to reduce a fraction. It's far from
2080 * perfect, but it will work well enough for this situation.
2083 for (i
= 0; f
[i
] != 0; i
++) {
2084 while (n
% f
[i
] == 0 && d
% f
[i
] == 0) {
2104 * Determine the refresh rate of the specified drawable and display.
2106 * \param dpy Display whose refresh rate is to be determined.
2107 * \param drawable Drawable whose refresh rate is to be determined.
2108 * \param numerator Numerator of the refresh rate.
2109 * \param demoninator Denominator of the refresh rate.
2110 * \return If the refresh rate for the specified display and drawable could
2111 * be calculated, True is returned. Otherwise False is returned.
2113 * \note This function is implemented entirely client-side. A lot of other
2114 * functionality is required to export GLX_OML_sync_control, so on
2115 * XFree86 this function can be called for direct-rendering contexts
2116 * when GLX_OML_sync_control appears in the client extension string.
2120 __glXGetMscRateOML(Display
* dpy
, GLXDrawable drawable
,
2121 int32_t * numerator
, int32_t * denominator
)
2123 #if defined( GLX_DIRECT_RENDERING ) && defined( XF86VIDMODE )
2124 __GLXDRIdrawable
*draw
= GetGLXDRIDrawable(dpy
, drawable
);
2129 return __glxGetMscRate(draw
, numerator
, denominator
);
2141 __glXSwapBuffersMscOML(Display
* dpy
, GLXDrawable drawable
,
2142 int64_t target_msc
, int64_t divisor
, int64_t remainder
)
2144 struct glx_context
*gc
= __glXGetCurrentContext();
2145 #ifdef GLX_DIRECT_RENDERING
2146 __GLXDRIdrawable
*pdraw
= GetGLXDRIDrawable(dpy
, drawable
);
2147 struct glx_screen
*psc
= pdraw
? pdraw
->psc
: NULL
;
2150 if (!gc
) /* no GLX for this */
2153 #ifdef GLX_DIRECT_RENDERING
2154 if (!pdraw
|| !gc
->isDirect
)
2158 /* The OML_sync_control spec says these should "generate a GLX_BAD_VALUE
2159 * error", but it also says "It [glXSwapBuffersMscOML] will return a value
2160 * of -1 if the function failed because of errors detected in the input
2163 if (divisor
< 0 || remainder
< 0 || target_msc
< 0)
2165 if (divisor
> 0 && remainder
>= divisor
)
2168 if (target_msc
== 0 && divisor
== 0 && remainder
== 0)
2171 #ifdef GLX_DIRECT_RENDERING
2172 if (psc
->driScreen
&& psc
->driScreen
->swapBuffers
)
2173 return (*psc
->driScreen
->swapBuffers
)(pdraw
, target_msc
, divisor
,
2182 __glXWaitForMscOML(Display
* dpy
, GLXDrawable drawable
,
2183 int64_t target_msc
, int64_t divisor
,
2184 int64_t remainder
, int64_t * ust
,
2185 int64_t * msc
, int64_t * sbc
)
2187 #ifdef GLX_DIRECT_RENDERING
2188 __GLXDRIdrawable
*pdraw
= GetGLXDRIDrawable(dpy
, drawable
);
2189 struct glx_screen
*psc
= pdraw
? pdraw
->psc
: NULL
;
2194 /* The OML_sync_control spec says these should "generate a GLX_BAD_VALUE
2195 * error", but the return type in the spec is Bool.
2197 if (divisor
< 0 || remainder
< 0 || target_msc
< 0)
2199 if (divisor
> 0 && remainder
>= divisor
)
2202 #ifdef GLX_DIRECT_RENDERING
2203 if (pdraw
&& psc
->driScreen
&& psc
->driScreen
->waitForMSC
) {
2204 ret
= psc
->driScreen
->waitForMSC(pdraw
, target_msc
, divisor
, remainder
,
2215 __glXWaitForSbcOML(Display
* dpy
, GLXDrawable drawable
,
2216 int64_t target_sbc
, int64_t * ust
,
2217 int64_t * msc
, int64_t * sbc
)
2219 #ifdef GLX_DIRECT_RENDERING
2220 __GLXDRIdrawable
*pdraw
= GetGLXDRIDrawable(dpy
, drawable
);
2221 struct glx_screen
*psc
= pdraw
? pdraw
->psc
: NULL
;
2225 /* The OML_sync_control spec says this should "generate a GLX_BAD_VALUE
2226 * error", but the return type in the spec is Bool.
2231 #ifdef GLX_DIRECT_RENDERING
2232 if (pdraw
&& psc
->driScreen
&& psc
->driScreen
->waitForSBC
) {
2233 ret
= psc
->driScreen
->waitForSBC(pdraw
, target_sbc
, ust
, msc
, sbc
);
2245 * Mesa extension stubs. These will help reduce portability problems.
2250 * Release all buffers associated with the specified GLX drawable.
2253 * This function was intended for stand-alone Mesa. The issue there is that
2254 * the library doesn't get any notification when a window is closed. In
2255 * DRI there is a similar but slightly different issue. When GLX 1.3 is
2256 * supported, there are 3 different functions to destroy a drawable. It
2257 * should be possible to create GLX protocol (or have it determine which
2258 * protocol to use based on the type of the drawable) to have one function
2259 * do the work of 3. For the direct-rendering case, this function could
2260 * just call the driver's \c __DRIdrawableRec::destroyDrawable function.
2261 * This would reduce the frequency with which \c __driGarbageCollectDrawables
2262 * would need to be used. This really should be done as part of the new DRI
2265 * \sa http://oss.sgi.com/projects/ogl-sample/registry/MESA/release_buffers.txt
2266 * __driGarbageCollectDrawables
2267 * glXDestroyGLXPixmap
2268 * glXDestroyPbuffer glXDestroyPixmap glXDestroyWindow
2269 * glXDestroyGLXPbufferSGIX glXDestroyGLXVideoSourceSGIX
2272 __glXReleaseBuffersMESA(Display
* dpy
, GLXDrawable d
)
2281 glXCreateGLXPixmapMESA(Display
* dpy
, XVisualInfo
* visual
,
2282 Pixmap pixmap
, Colormap cmap
)
2295 * GLX_MESA_copy_sub_buffer
2297 #define X_GLXvop_CopySubBufferMESA 5154 /* temporary */
2299 __glXCopySubBufferMESA(Display
* dpy
, GLXDrawable drawable
,
2300 int x
, int y
, int width
, int height
)
2302 xGLXVendorPrivateReq
*req
;
2303 struct glx_context
*gc
;
2305 CARD32
*drawable_ptr
;
2306 INT32
*x_ptr
, *y_ptr
, *w_ptr
, *h_ptr
;
2309 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
2310 __GLXDRIdrawable
*pdraw
= GetGLXDRIDrawable(dpy
, drawable
);
2311 if (pdraw
!= NULL
) {
2312 struct glx_screen
*psc
= pdraw
->psc
;
2313 if (psc
->driScreen
->copySubBuffer
!= NULL
) {
2314 (*psc
->driScreen
->copySubBuffer
) (pdraw
, x
, y
, width
, height
, True
);
2321 opcode
= __glXSetupForCommand(dpy
);
2326 ** The calling thread may or may not have a current context. If it
2327 ** does, send the context tag so the server can do a flush.
2329 gc
= __glXGetCurrentContext();
2330 if ((gc
!= NULL
) && (dpy
== gc
->currentDpy
) &&
2331 ((drawable
== gc
->currentDrawable
) ||
2332 (drawable
== gc
->currentReadable
))) {
2333 tag
= gc
->currentContextTag
;
2340 GetReqExtra(GLXVendorPrivate
, sizeof(CARD32
) + sizeof(INT32
) * 4, req
);
2341 req
->reqType
= opcode
;
2342 req
->glxCode
= X_GLXVendorPrivate
;
2343 req
->vendorCode
= X_GLXvop_CopySubBufferMESA
;
2344 req
->contextTag
= tag
;
2346 drawable_ptr
= (CARD32
*) (req
+ 1);
2347 x_ptr
= (INT32
*) (drawable_ptr
+ 1);
2348 y_ptr
= (INT32
*) (drawable_ptr
+ 2);
2349 w_ptr
= (INT32
*) (drawable_ptr
+ 3);
2350 h_ptr
= (INT32
*) (drawable_ptr
+ 4);
2352 *drawable_ptr
= drawable
;
2364 __glXBindTexImageEXT(Display
* dpy
,
2365 GLXDrawable drawable
, int buffer
, const int *attrib_list
)
2367 struct glx_context
*gc
= __glXGetCurrentContext();
2369 if (gc
== NULL
|| gc
->vtable
->bind_tex_image
== NULL
)
2372 gc
->vtable
->bind_tex_image(dpy
, drawable
, buffer
, attrib_list
);
2376 __glXReleaseTexImageEXT(Display
* dpy
, GLXDrawable drawable
, int buffer
)
2378 struct glx_context
*gc
= __glXGetCurrentContext();
2380 if (gc
== NULL
|| gc
->vtable
->release_tex_image
== NULL
)
2383 gc
->vtable
->release_tex_image(dpy
, drawable
, buffer
);
2388 #endif /* GLX_USE_APPLEGL */
2391 * \c strdup is actually not a standard ANSI C or POSIX routine.
2392 * Irix will not define it if ANSI mode is in effect.
2397 __glXstrdup(const char *str
)
2400 copy
= malloc(strlen(str
) + 1);
2408 ** glXGetProcAddress support
2411 struct name_address_pair
2417 #define GLX_FUNCTION(f) { # f, (GLvoid *) f }
2418 #define GLX_FUNCTION2(n,f) { # n, (GLvoid *) f }
2420 static const struct name_address_pair GLX_functions
[] = {
2421 /*** GLX_VERSION_1_0 ***/
2422 GLX_FUNCTION(glXChooseVisual
),
2423 GLX_FUNCTION(glXCopyContext
),
2424 GLX_FUNCTION(glXCreateContext
),
2425 GLX_FUNCTION(glXCreateGLXPixmap
),
2426 GLX_FUNCTION(glXDestroyContext
),
2427 GLX_FUNCTION(glXDestroyGLXPixmap
),
2428 GLX_FUNCTION(glXGetConfig
),
2429 GLX_FUNCTION(glXGetCurrentContext
),
2430 GLX_FUNCTION(glXGetCurrentDrawable
),
2431 GLX_FUNCTION(glXIsDirect
),
2432 GLX_FUNCTION(glXMakeCurrent
),
2433 GLX_FUNCTION(glXQueryExtension
),
2434 GLX_FUNCTION(glXQueryVersion
),
2435 GLX_FUNCTION(glXSwapBuffers
),
2436 GLX_FUNCTION(glXUseXFont
),
2437 GLX_FUNCTION(glXWaitGL
),
2438 GLX_FUNCTION(glXWaitX
),
2440 /*** GLX_VERSION_1_1 ***/
2441 GLX_FUNCTION(glXGetClientString
),
2442 GLX_FUNCTION(glXQueryExtensionsString
),
2443 GLX_FUNCTION(glXQueryServerString
),
2445 /*** GLX_VERSION_1_2 ***/
2446 GLX_FUNCTION(glXGetCurrentDisplay
),
2448 /*** GLX_VERSION_1_3 ***/
2449 GLX_FUNCTION(glXChooseFBConfig
),
2450 GLX_FUNCTION(glXCreateNewContext
),
2451 GLX_FUNCTION(glXCreatePbuffer
),
2452 GLX_FUNCTION(glXCreatePixmap
),
2453 GLX_FUNCTION(glXCreateWindow
),
2454 GLX_FUNCTION(glXDestroyPbuffer
),
2455 GLX_FUNCTION(glXDestroyPixmap
),
2456 GLX_FUNCTION(glXDestroyWindow
),
2457 GLX_FUNCTION(glXGetCurrentReadDrawable
),
2458 GLX_FUNCTION(glXGetFBConfigAttrib
),
2459 GLX_FUNCTION(glXGetFBConfigs
),
2460 GLX_FUNCTION(glXGetSelectedEvent
),
2461 GLX_FUNCTION(glXGetVisualFromFBConfig
),
2462 GLX_FUNCTION(glXMakeContextCurrent
),
2463 GLX_FUNCTION(glXQueryContext
),
2464 GLX_FUNCTION(glXQueryDrawable
),
2465 GLX_FUNCTION(glXSelectEvent
),
2467 #ifndef GLX_USE_APPLEGL
2468 /*** GLX_SGI_swap_control ***/
2469 GLX_FUNCTION2(glXSwapIntervalSGI
, __glXSwapIntervalSGI
),
2471 /*** GLX_SGI_video_sync ***/
2472 GLX_FUNCTION2(glXGetVideoSyncSGI
, __glXGetVideoSyncSGI
),
2473 GLX_FUNCTION2(glXWaitVideoSyncSGI
, __glXWaitVideoSyncSGI
),
2475 /*** GLX_SGI_make_current_read ***/
2476 GLX_FUNCTION2(glXMakeCurrentReadSGI
, glXMakeContextCurrent
),
2477 GLX_FUNCTION2(glXGetCurrentReadDrawableSGI
, glXGetCurrentReadDrawable
),
2479 /*** GLX_EXT_import_context ***/
2480 GLX_FUNCTION(glXFreeContextEXT
),
2481 GLX_FUNCTION(glXGetContextIDEXT
),
2482 GLX_FUNCTION2(glXGetCurrentDisplayEXT
, glXGetCurrentDisplay
),
2483 GLX_FUNCTION(glXImportContextEXT
),
2484 GLX_FUNCTION2(glXQueryContextInfoEXT
, glXQueryContext
),
2487 /*** GLX_SGIX_fbconfig ***/
2488 GLX_FUNCTION2(glXGetFBConfigAttribSGIX
, glXGetFBConfigAttrib
),
2489 GLX_FUNCTION2(glXChooseFBConfigSGIX
, glXChooseFBConfig
),
2490 GLX_FUNCTION(glXCreateGLXPixmapWithConfigSGIX
),
2491 GLX_FUNCTION(glXCreateContextWithConfigSGIX
),
2492 GLX_FUNCTION2(glXGetVisualFromFBConfigSGIX
, glXGetVisualFromFBConfig
),
2493 GLX_FUNCTION(glXGetFBConfigFromVisualSGIX
),
2495 #ifndef GLX_USE_APPLEGL
2496 /*** GLX_SGIX_pbuffer ***/
2497 GLX_FUNCTION(glXCreateGLXPbufferSGIX
),
2498 GLX_FUNCTION(glXDestroyGLXPbufferSGIX
),
2499 GLX_FUNCTION(glXQueryGLXPbufferSGIX
),
2500 GLX_FUNCTION(glXSelectEventSGIX
),
2501 GLX_FUNCTION(glXGetSelectedEventSGIX
),
2503 /*** GLX_SGIX_swap_group ***/
2504 GLX_FUNCTION2(glXJoinSwapGroupSGIX
, __glXJoinSwapGroupSGIX
),
2506 /*** GLX_SGIX_swap_barrier ***/
2507 GLX_FUNCTION2(glXBindSwapBarrierSGIX
, __glXBindSwapBarrierSGIX
),
2508 GLX_FUNCTION2(glXQueryMaxSwapBarriersSGIX
, __glXQueryMaxSwapBarriersSGIX
),
2510 /*** GLX_MESA_copy_sub_buffer ***/
2511 GLX_FUNCTION2(glXCopySubBufferMESA
, __glXCopySubBufferMESA
),
2513 /*** GLX_MESA_pixmap_colormap ***/
2514 GLX_FUNCTION(glXCreateGLXPixmapMESA
),
2516 /*** GLX_MESA_release_buffers ***/
2517 GLX_FUNCTION2(glXReleaseBuffersMESA
, __glXReleaseBuffersMESA
),
2519 /*** GLX_MESA_swap_control ***/
2520 GLX_FUNCTION2(glXSwapIntervalMESA
, __glXSwapIntervalMESA
),
2521 GLX_FUNCTION2(glXGetSwapIntervalMESA
, __glXGetSwapIntervalMESA
),
2524 /*** GLX_ARB_get_proc_address ***/
2525 GLX_FUNCTION(glXGetProcAddressARB
),
2528 GLX_FUNCTION2(glXGetProcAddress
, glXGetProcAddressARB
),
2530 #ifndef GLX_USE_APPLEGL
2531 /*** GLX_OML_sync_control ***/
2532 GLX_FUNCTION2(glXWaitForSbcOML
, __glXWaitForSbcOML
),
2533 GLX_FUNCTION2(glXWaitForMscOML
, __glXWaitForMscOML
),
2534 GLX_FUNCTION2(glXSwapBuffersMscOML
, __glXSwapBuffersMscOML
),
2535 GLX_FUNCTION2(glXGetMscRateOML
, __glXGetMscRateOML
),
2536 GLX_FUNCTION2(glXGetSyncValuesOML
, __glXGetSyncValuesOML
),
2538 /*** GLX_EXT_texture_from_pixmap ***/
2539 GLX_FUNCTION2(glXBindTexImageEXT
, __glXBindTexImageEXT
),
2540 GLX_FUNCTION2(glXReleaseTexImageEXT
, __glXReleaseTexImageEXT
),
2543 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
2544 /*** DRI configuration ***/
2545 GLX_FUNCTION(glXGetScreenDriver
),
2546 GLX_FUNCTION(glXGetDriverConfig
),
2549 /*** GLX_ARB_create_context and GLX_ARB_create_context_profile ***/
2550 GLX_FUNCTION(glXCreateContextAttribsARB
),
2552 {NULL
, NULL
} /* end of list */
2555 static const GLvoid
*
2556 get_glx_proc_address(const char *funcName
)
2560 /* try static functions */
2561 for (i
= 0; GLX_functions
[i
].Name
; i
++) {
2562 if (strcmp(GLX_functions
[i
].Name
, funcName
) == 0)
2563 return GLX_functions
[i
].Address
;
2570 * Get the address of a named GL function. This is the pre-GLX 1.4 name for
2571 * \c glXGetProcAddress.
2573 * \param procName Name of a GL or GLX function.
2574 * \returns A pointer to the named function
2576 * \sa glXGetProcAddress
2578 _X_EXPORT
void (*glXGetProcAddressARB(const GLubyte
* procName
)) (void)
2580 typedef void (*gl_function
) (void);
2584 /* Search the table of GLX and internal functions first. If that
2585 * fails and the supplied name could be a valid core GL name, try
2586 * searching the core GL function table. This check is done to prevent
2587 * DRI based drivers from searching the core GL function table for
2588 * internal API functions.
2590 f
= (gl_function
) get_glx_proc_address((const char *) procName
);
2591 if ((f
== NULL
) && (procName
[0] == 'g') && (procName
[1] == 'l')
2592 && (procName
[2] != 'X')) {
2593 #ifdef GLX_SHARED_GLAPI
2594 f
= (gl_function
) __indirect_get_proc_address((const char *) procName
);
2597 f
= (gl_function
) _glapi_get_proc_address((const char *) procName
);
2599 struct glx_context
*gc
= __glXGetCurrentContext();
2601 if (gc
!= NULL
&& gc
->vtable
->get_proc_address
!= NULL
)
2602 f
= gc
->vtable
->get_proc_address((const char *) procName
);
2609 * Get the address of a named GL function. This is the GLX 1.4 name for
2610 * \c glXGetProcAddressARB.
2612 * \param procName Name of a GL or GLX function.
2613 * \returns A pointer to the named function
2615 * \sa glXGetProcAddressARB
2617 _X_EXPORT
void (*glXGetProcAddress(const GLubyte
* procName
)) (void)
2618 #if defined(__GNUC__) && !defined(GLX_ALIAS_UNSUPPORTED)
2619 __attribute__ ((alias("glXGetProcAddressARB")));
2622 return glXGetProcAddressARB(procName
);
2624 #endif /* __GNUC__ */
2627 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
2629 * Get the unadjusted system time (UST). Currently, the UST is measured in
2630 * microseconds since Epoc. The actual resolution of the UST may vary from
2631 * system to system, and the units may vary from release to release.
2632 * Drivers should not call this function directly. They should instead use
2633 * \c glXGetProcAddress to obtain a pointer to the function.
2635 * \param ust Location to store the 64-bit UST
2636 * \returns Zero on success or a negative errno value on failure.
2638 * \sa glXGetProcAddress, PFNGLXGETUSTPROC
2640 * \since Internal API version 20030317.
2643 __glXGetUST(int64_t * ust
)
2651 if (gettimeofday(&tv
, NULL
) == 0) {
2652 ust
[0] = (tv
.tv_sec
* 1000000) + tv
.tv_usec
;
2659 #endif /* GLX_DIRECT_RENDERING */