2 * SGI FREE SOFTWARE LICENSE B (Version 2.0, Sept. 18, 2008)
3 * Copyright (C) 1991-2000 Silicon Graphics, Inc. All Rights Reserved.
5 * Permission is hereby granted, free of charge, to any person obtaining a
6 * copy of this software and associated documentation files (the "Software"),
7 * to deal in the Software without restriction, including without limitation
8 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
9 * and/or sell copies of the Software, and to permit persons to whom the
10 * Software is furnished to do so, subject to the following conditions:
12 * The above copyright notice including the dates of first publication and
13 * either this permission notice or a reference to
14 * http://oss.sgi.com/projects/FreeB/
15 * shall be included in all copies or substantial portions of the Software.
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
18 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
20 * SILICON GRAPHICS, INC. BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
21 * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
22 * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
25 * Except as contained in this notice, the name of Silicon Graphics, Inc.
26 * shall not be used in advertising or otherwise to promote the sale, use or
27 * other dealings in this Software without prior written authorization from
28 * Silicon Graphics, Inc.
33 * Client-side GLX interface.
36 #include "glxclient.h"
38 #include "glxextensions.h"
39 #include "glcontextmodes.h"
41 #ifdef GLX_DIRECT_RENDERING
43 #include <X11/extensions/xf86vmode.h>
48 #include <X11/Xlib-xcb.h>
53 static const char __glXGLXClientVendorName
[] = "SGI";
54 static const char __glXGLXClientVersion
[] = "1.4";
57 /****************************************************************************/
59 #ifdef GLX_DIRECT_RENDERING
61 static Bool windowExistsFlag
;
62 static int windowExistsErrorHandler(Display
*dpy
, XErrorEvent
*xerr
)
64 if (xerr
->error_code
== BadWindow
) {
65 windowExistsFlag
= GL_FALSE
;
71 * Find drawables in the local hash that have been destroyed on the
74 * \param dpy Display to destroy drawables for
75 * \param screen Screen number to destroy drawables for
77 static void GarbageCollectDRIDrawables(Display
*dpy
, __GLXscreenConfigs
*sc
)
80 __GLXDRIdrawable
*pdraw
;
81 XWindowAttributes xwa
;
82 int (*oldXErrorHandler
)(Display
*, XErrorEvent
*);
84 /* Set no-op error handler so Xlib doesn't bail out if the windows
85 * has alreay been destroyed on the server. */
87 oldXErrorHandler
= XSetErrorHandler(windowExistsErrorHandler
);
89 if (__glxHashFirst(sc
->drawHash
, &draw
, (void *)&pdraw
) == 1) {
91 windowExistsFlag
= GL_TRUE
;
92 XGetWindowAttributes(dpy
, draw
, &xwa
); /* dummy request */
93 if (!windowExistsFlag
) {
94 /* Destroy the local drawable data, if the drawable no
95 longer exists in the Xserver */
96 (*pdraw
->destroyDrawable
)(pdraw
);
97 __glxHashDelete(sc
->drawHash
, draw
);
99 } while (__glxHashNext(sc
->drawHash
, &draw
, (void *)&pdraw
) == 1);
102 XSync(dpy
, GL_FALSE
);
103 XSetErrorHandler(oldXErrorHandler
);
106 extern __GLXDRIdrawable
*
107 GetGLXDRIDrawable(Display
*dpy
, GLXDrawable drawable
, int * const scrn_num
);
110 * Get the __DRIdrawable for the drawable associated with a GLXContext
112 * \param dpy The display associated with \c drawable.
113 * \param drawable GLXDrawable whose __DRIdrawable part is to be retrieved.
114 * \param scrn_num If non-NULL, the drawables screen is stored there
115 * \returns A pointer to the context's __DRIdrawable on success, or NULL if
116 * the drawable is not associated with a direct-rendering context.
118 _X_HIDDEN __GLXDRIdrawable
*
119 GetGLXDRIDrawable(Display
*dpy
, GLXDrawable drawable
, int * const scrn_num
)
121 __GLXdisplayPrivate
*priv
= __glXInitialize(dpy
);
122 __GLXDRIdrawable
*pdraw
;
123 const unsigned screen_count
= ScreenCount(dpy
);
125 __GLXscreenConfigs
*psc
;
130 for (i
= 0; i
< screen_count
; i
++) {
131 psc
= &priv
->screenConfigs
[i
];
132 if (psc
->drawHash
== NULL
)
135 if (__glxHashLookup(psc
->drawHash
, drawable
, (void *) &pdraw
) == 0) {
136 if (scrn_num
!= NULL
)
149 * Get the GLX per-screen data structure associated with a GLX context.
151 * \param dpy Display for which the GLX per-screen information is to be
153 * \param scrn Screen on \c dpy for which the GLX per-screen information is
155 * \returns A pointer to the GLX per-screen data if \c dpy and \c scrn
156 * specify a valid GLX screen, or NULL otherwise.
158 * \todo Should this function validate that \c scrn is within the screen
159 * number range for \c dpy?
162 static __GLXscreenConfigs
*
163 GetGLXScreenConfigs(Display
*dpy
, int scrn
)
165 __GLXdisplayPrivate
* const priv
= __glXInitialize(dpy
);
167 return (priv
->screenConfigs
!= NULL
) ? &priv
->screenConfigs
[scrn
] : NULL
;
172 GetGLXPrivScreenConfig( Display
*dpy
, int scrn
, __GLXdisplayPrivate
** ppriv
,
173 __GLXscreenConfigs
** ppsc
)
175 /* Initialize the extension, if needed . This has the added value
176 * of initializing/allocating the display private
180 return GLX_NO_EXTENSION
;
183 *ppriv
= __glXInitialize(dpy
);
184 if ( *ppriv
== NULL
) {
185 return GLX_NO_EXTENSION
;
188 /* Check screen number to see if its valid */
189 if ((scrn
< 0) || (scrn
>= ScreenCount(dpy
))) {
190 return GLX_BAD_SCREEN
;
193 /* Check to see if the GL is supported on this screen */
194 *ppsc
= &((*ppriv
)->screenConfigs
[scrn
]);
195 if ( (*ppsc
)->configs
== NULL
) {
196 /* No support for GL on this screen regardless of visual */
197 return GLX_BAD_VISUAL
;
205 * Determine if a \c GLXFBConfig supplied by the application is valid.
207 * \param dpy Application supplied \c Display pointer.
208 * \param config Application supplied \c GLXFBConfig.
210 * \returns If the \c GLXFBConfig is valid, the a pointer to the matching
211 * \c __GLcontextModes structure is returned. Otherwise, \c NULL
214 static __GLcontextModes
*
215 ValidateGLXFBConfig( Display
* dpy
, GLXFBConfig config
)
217 __GLXdisplayPrivate
* const priv
= __glXInitialize(dpy
);
218 const unsigned num_screens
= ScreenCount(dpy
);
220 const __GLcontextModes
* modes
;
223 if ( priv
!= NULL
) {
224 for ( i
= 0 ; i
< num_screens
; i
++ ) {
225 for ( modes
= priv
->screenConfigs
[i
].configs
227 ; modes
= modes
->next
) {
228 if ( modes
== (__GLcontextModes
*) config
) {
229 return (__GLcontextModes
*) config
;
240 * \todo It should be possible to move the allocate of \c client_state_private
241 * later in the function for direct-rendering contexts. Direct-rendering
242 * contexts don't need to track client state, so they don't need that memory
245 * \todo Eliminate \c __glXInitVertexArrayState. Replace it with a new
246 * function called \c __glXAllocateClientState that allocates the memory and
247 * does all the initialization (including the pixel pack / unpack).
250 GLXContext
AllocateGLXContext( Display
*dpy
)
255 __GLXattribute
*state
;
260 opcode
= __glXSetupForCommand(dpy
);
265 /* Allocate our context record */
266 gc
= (GLXContext
) Xmalloc(sizeof(struct __GLXcontextRec
));
271 memset(gc
, 0, sizeof(struct __GLXcontextRec
));
273 state
= Xmalloc(sizeof(struct __GLXattributeRec
));
279 gc
->client_state_private
= state
;
280 memset(gc
->client_state_private
, 0, sizeof(struct __GLXattributeRec
));
281 state
->NoDrawArraysProtocol
= (getenv("LIBGL_NO_DRAWARRAYS") != NULL
);
284 ** Create a temporary buffer to hold GLX rendering commands. The size
285 ** of the buffer is selected so that the maximum number of GLX rendering
286 ** commands can fit in a single X packet and still have room in the X
287 ** packet for the GLXRenderReq header.
290 bufSize
= (XMaxRequestSize(dpy
) * 4) - sz_xGLXRenderReq
;
291 gc
->buf
= (GLubyte
*) Xmalloc(bufSize
);
293 Xfree(gc
->client_state_private
);
297 gc
->bufSize
= bufSize
;
299 /* Fill in the new context */
300 gc
->renderMode
= GL_RENDER
;
302 state
->storePack
.alignment
= 4;
303 state
->storeUnpack
.alignment
= 4;
305 gc
->attributes
.stackPointer
= &gc
->attributes
.stack
[0];
308 ** PERFORMANCE NOTE: A mode dependent fill image can speed things up.
309 ** Other code uses the fastImageUnpack bit, but it is never set
312 gc
->fastImageUnpack
= GL_FALSE
;
313 gc
->fillImage
= __glFillImage
;
315 gc
->bufEnd
= gc
->buf
+ bufSize
;
316 gc
->isDirect
= GL_FALSE
;
319 ** Set limit register so that there will be one command per packet
323 gc
->limit
= gc
->buf
+ bufSize
- __GLX_BUFFER_LIMIT_SIZE
;
326 gc
->majorOpcode
= opcode
;
329 ** Constrain the maximum drawing command size allowed to be
330 ** transfered using the X_GLXRender protocol request. First
331 ** constrain by a software limit, then constrain by the protocl
334 if (bufSize
> __GLX_RENDER_CMD_SIZE_LIMIT
) {
335 bufSize
= __GLX_RENDER_CMD_SIZE_LIMIT
;
337 if (bufSize
> __GLX_MAX_RENDER_CMD_SIZE
) {
338 bufSize
= __GLX_MAX_RENDER_CMD_SIZE
;
340 gc
->maxSmallRenderCommandSize
= bufSize
;
346 * Create a new context. Exactly one of \c vis and \c fbconfig should be
349 * \param use_glx_1_3 For FBConfigs, should GLX 1.3 protocol or
350 * SGIX_fbconfig protocol be used?
351 * \param renderType For FBConfigs, what is the rendering type?
355 CreateContext(Display
*dpy
, XVisualInfo
*vis
,
356 const __GLcontextModes
* const fbconfig
,
357 GLXContext shareList
,
358 Bool allowDirect
, GLXContextID contextID
,
359 Bool use_glx_1_3
, int renderType
)
362 #ifdef GLX_DIRECT_RENDERING
363 int screen
= (fbconfig
== NULL
) ? vis
->screen
: fbconfig
->screen
;
364 __GLXscreenConfigs
* const psc
= GetGLXScreenConfigs(dpy
, screen
);
370 gc
= AllocateGLXContext(dpy
);
374 if (None
== contextID
) {
375 if ( (vis
== NULL
) && (fbconfig
== NULL
) )
378 #ifdef GLX_DIRECT_RENDERING
379 if (allowDirect
&& psc
->driScreen
) {
380 const __GLcontextModes
* mode
;
382 if (fbconfig
== NULL
) {
383 mode
= _gl_context_modes_find_visual(psc
->visuals
, vis
->visualid
);
387 error
.errorCode
= BadValue
;
388 error
.resourceID
= vis
->visualid
;
389 error
.sequenceNumber
= dpy
->request
;
390 error
.type
= X_Error
;
391 error
.majorCode
= gc
->majorOpcode
;
392 error
.minorCode
= X_GLXCreateContext
;
393 _XError(dpy
, &error
);
401 gc
->driContext
= psc
->driScreen
->createContext(psc
, mode
, gc
,
404 if (gc
->driContext
!= NULL
) {
405 gc
->screen
= mode
->screen
;
408 gc
->isDirect
= GL_TRUE
;
414 if ( fbconfig
== NULL
) {
415 xGLXCreateContextReq
*req
;
417 /* Send the glXCreateContext request */
418 GetReq(GLXCreateContext
,req
);
419 req
->reqType
= gc
->majorOpcode
;
420 req
->glxCode
= X_GLXCreateContext
;
421 req
->context
= gc
->xid
= XAllocID(dpy
);
422 req
->visual
= vis
->visualid
;
423 req
->screen
= vis
->screen
;
424 req
->shareList
= shareList
? shareList
->xid
: None
;
425 #ifdef GLX_DIRECT_RENDERING
426 req
->isDirect
= gc
->driContext
!= NULL
;
431 else if ( use_glx_1_3
) {
432 xGLXCreateNewContextReq
*req
;
434 /* Send the glXCreateNewContext request */
435 GetReq(GLXCreateNewContext
,req
);
436 req
->reqType
= gc
->majorOpcode
;
437 req
->glxCode
= X_GLXCreateNewContext
;
438 req
->context
= gc
->xid
= XAllocID(dpy
);
439 req
->fbconfig
= fbconfig
->fbconfigID
;
440 req
->screen
= fbconfig
->screen
;
441 req
->renderType
= renderType
;
442 req
->shareList
= shareList
? shareList
->xid
: None
;
443 #ifdef GLX_DIRECT_RENDERING
444 req
->isDirect
= gc
->driContext
!= NULL
;
450 xGLXVendorPrivateWithReplyReq
*vpreq
;
451 xGLXCreateContextWithConfigSGIXReq
*req
;
453 /* Send the glXCreateNewContext request */
454 GetReqExtra(GLXVendorPrivateWithReply
,
455 sz_xGLXCreateContextWithConfigSGIXReq
-sz_xGLXVendorPrivateWithReplyReq
,vpreq
);
456 req
= (xGLXCreateContextWithConfigSGIXReq
*)vpreq
;
457 req
->reqType
= gc
->majorOpcode
;
458 req
->glxCode
= X_GLXVendorPrivateWithReply
;
459 req
->vendorCode
= X_GLXvop_CreateContextWithConfigSGIX
;
460 req
->context
= gc
->xid
= XAllocID(dpy
);
461 req
->fbconfig
= fbconfig
->fbconfigID
;
462 req
->screen
= fbconfig
->screen
;
463 req
->renderType
= renderType
;
464 req
->shareList
= shareList
? shareList
->xid
: None
;
465 #ifdef GLX_DIRECT_RENDERING
466 req
->isDirect
= gc
->driContext
!= NULL
;
474 gc
->imported
= GL_FALSE
;
478 gc
->imported
= GL_TRUE
;
484 PUBLIC GLXContext
glXCreateContext(Display
*dpy
, XVisualInfo
*vis
,
485 GLXContext shareList
, Bool allowDirect
)
487 return CreateContext(dpy
, vis
, NULL
, shareList
, allowDirect
, None
,
491 _X_HIDDEN
void __glXFreeContext(__GLXcontext
*gc
)
493 if (gc
->vendor
) XFree((char *) gc
->vendor
);
494 if (gc
->renderer
) XFree((char *) gc
->renderer
);
495 if (gc
->version
) XFree((char *) gc
->version
);
496 if (gc
->extensions
) XFree((char *) gc
->extensions
);
497 __glFreeAttributeState(gc
);
498 XFree((char *) gc
->buf
);
499 Xfree((char *) gc
->client_state_private
);
505 ** Destroy the named context
508 DestroyContext(Display
*dpy
, GLXContext gc
)
510 xGLXDestroyContextReq
*req
;
515 opcode
= __glXSetupForCommand(dpy
);
516 if (!opcode
|| !gc
) {
522 imported
= gc
->imported
;
525 #ifdef GLX_DIRECT_RENDERING
526 /* Destroy the direct rendering context */
527 if (gc
->driContext
) {
528 (*gc
->driContext
->destroyContext
)(gc
->driContext
, gc
->psc
, dpy
);
529 gc
->driContext
= NULL
;
530 GarbageCollectDRIDrawables(dpy
, gc
->psc
);
534 __glXFreeVertexArrayState(gc
);
536 if (gc
->currentDpy
) {
537 /* Have to free later cuz it's in use now */
540 /* Destroy the handle if not current to anybody */
542 __glXFreeContext(gc
);
547 ** This dpy also created the server side part of the context.
548 ** Send the glXDestroyContext request.
551 GetReq(GLXDestroyContext
,req
);
552 req
->reqType
= opcode
;
553 req
->glxCode
= X_GLXDestroyContext
;
560 PUBLIC
void glXDestroyContext(Display
*dpy
, GLXContext gc
)
562 DestroyContext(dpy
, gc
);
566 ** Return the major and minor version #s for the GLX extension
568 PUBLIC Bool
glXQueryVersion(Display
*dpy
, int *major
, int *minor
)
570 __GLXdisplayPrivate
*priv
;
572 /* Init the extension. This fetches the major and minor version. */
573 priv
= __glXInitialize(dpy
);
574 if (!priv
) return GL_FALSE
;
576 if (major
) *major
= priv
->majorVersion
;
577 if (minor
) *minor
= priv
->minorVersion
;
582 ** Query the existance of the GLX extension
584 PUBLIC Bool
glXQueryExtension(Display
*dpy
, int *errorBase
, int *eventBase
)
586 int major_op
, erb
, evb
;
589 rv
= XQueryExtension(dpy
, GLX_EXTENSION_NAME
, &major_op
, &evb
, &erb
);
591 if (errorBase
) *errorBase
= erb
;
592 if (eventBase
) *eventBase
= evb
;
598 ** Put a barrier in the token stream that forces the GL to finish its
599 ** work before X can proceed.
601 PUBLIC
void glXWaitGL(void)
604 GLXContext gc
= __glXGetCurrentContext();
605 Display
*dpy
= gc
->currentDpy
;
609 /* Flush any pending commands out */
610 __glXFlushRenderBuffer(gc
, gc
->pc
);
612 #ifdef GLX_DIRECT_RENDERING
613 if (gc
->driContext
) {
614 /* This bit of ugliness unwraps the glFinish function */
623 /* Send the glXWaitGL request */
625 GetReq(GLXWaitGL
,req
);
626 req
->reqType
= gc
->majorOpcode
;
627 req
->glxCode
= X_GLXWaitGL
;
628 req
->contextTag
= gc
->currentContextTag
;
634 ** Put a barrier in the token stream that forces X to finish its
635 ** work before GL can proceed.
637 PUBLIC
void glXWaitX(void)
640 GLXContext gc
= __glXGetCurrentContext();
641 Display
*dpy
= gc
->currentDpy
;
645 /* Flush any pending commands out */
646 __glXFlushRenderBuffer(gc
, gc
->pc
);
648 #ifdef GLX_DIRECT_RENDERING
649 if (gc
->driContext
) {
656 ** Send the glXWaitX request.
659 GetReq(GLXWaitX
,req
);
660 req
->reqType
= gc
->majorOpcode
;
661 req
->glxCode
= X_GLXWaitX
;
662 req
->contextTag
= gc
->currentContextTag
;
667 PUBLIC
void glXUseXFont(Font font
, int first
, int count
, int listBase
)
669 xGLXUseXFontReq
*req
;
670 GLXContext gc
= __glXGetCurrentContext();
671 Display
*dpy
= gc
->currentDpy
;
675 /* Flush any pending commands out */
676 (void) __glXFlushRenderBuffer(gc
, gc
->pc
);
678 #ifdef GLX_DIRECT_RENDERING
679 if (gc
->driContext
) {
680 DRI_glXUseXFont(font
, first
, count
, listBase
);
685 /* Send the glXUseFont request */
687 GetReq(GLXUseXFont
,req
);
688 req
->reqType
= gc
->majorOpcode
;
689 req
->glxCode
= X_GLXUseXFont
;
690 req
->contextTag
= gc
->currentContextTag
;
694 req
->listBase
= listBase
;
699 /************************************************************************/
702 ** Copy the source context to the destination context using the
705 PUBLIC
void glXCopyContext(Display
*dpy
, GLXContext source
,
706 GLXContext dest
, unsigned long mask
)
708 xGLXCopyContextReq
*req
;
709 GLXContext gc
= __glXGetCurrentContext();
713 opcode
= __glXSetupForCommand(dpy
);
718 #ifdef GLX_DIRECT_RENDERING
719 if (gc
->driContext
) {
720 /* NOT_DONE: This does not work yet */
725 ** If the source is the current context, send its tag so that the context
726 ** can be flushed before the copy.
728 if (source
== gc
&& dpy
== gc
->currentDpy
) {
729 tag
= gc
->currentContextTag
;
734 /* Send the glXCopyContext request */
736 GetReq(GLXCopyContext
,req
);
737 req
->reqType
= opcode
;
738 req
->glxCode
= X_GLXCopyContext
;
739 req
->source
= source
? source
->xid
: None
;
740 req
->dest
= dest
? dest
->xid
: None
;
742 req
->contextTag
= tag
;
749 * Determine if a context uses direct rendering.
751 * \param dpy Display where the context was created.
752 * \param contextID ID of the context to be tested.
754 * \returns \c GL_TRUE if the context is direct rendering or not.
756 static Bool
__glXIsDirect(Display
*dpy
, GLXContextID contextID
)
758 #if !defined(USE_XCB)
759 xGLXIsDirectReq
*req
;
760 xGLXIsDirectReply reply
;
764 opcode
= __glXSetupForCommand(dpy
);
770 xcb_connection_t
* c
= XGetXCBConnection(dpy
);
771 xcb_glx_is_direct_reply_t
* reply
=
772 xcb_glx_is_direct_reply(c
,
773 xcb_glx_is_direct(c
, contextID
),
776 const Bool is_direct
= reply
->is_direct
? True
: False
;
781 /* Send the glXIsDirect request */
783 GetReq(GLXIsDirect
,req
);
784 req
->reqType
= opcode
;
785 req
->glxCode
= X_GLXIsDirect
;
786 req
->context
= contextID
;
787 _XReply(dpy
, (xReply
*) &reply
, 0, False
);
791 return reply
.isDirect
;
797 * Shouldn't this function \b always return \c GL_FALSE when
798 * \c GLX_DIRECT_RENDERING is not defined? Do we really need to bother with
799 * the GLX protocol here at all?
801 PUBLIC Bool
glXIsDirect(Display
*dpy
, GLXContext gc
)
805 #ifdef GLX_DIRECT_RENDERING
806 } else if (gc
->driContext
) {
810 return __glXIsDirect(dpy
, gc
->xid
);
813 PUBLIC GLXPixmap
glXCreateGLXPixmap(Display
*dpy
, XVisualInfo
*vis
,
816 xGLXCreateGLXPixmapReq
*req
;
820 opcode
= __glXSetupForCommand(dpy
);
825 /* Send the glXCreateGLXPixmap request */
827 GetReq(GLXCreateGLXPixmap
,req
);
828 req
->reqType
= opcode
;
829 req
->glxCode
= X_GLXCreateGLXPixmap
;
830 req
->screen
= vis
->screen
;
831 req
->visual
= vis
->visualid
;
832 req
->pixmap
= pixmap
;
833 req
->glxpixmap
= xid
= XAllocID(dpy
);
840 ** Destroy the named pixmap
842 PUBLIC
void glXDestroyGLXPixmap(Display
*dpy
, GLXPixmap glxpixmap
)
844 xGLXDestroyGLXPixmapReq
*req
;
847 opcode
= __glXSetupForCommand(dpy
);
852 /* Send the glXDestroyGLXPixmap request */
854 GetReq(GLXDestroyGLXPixmap
,req
);
855 req
->reqType
= opcode
;
856 req
->glxCode
= X_GLXDestroyGLXPixmap
;
857 req
->glxpixmap
= glxpixmap
;
862 PUBLIC
void glXSwapBuffers(Display
*dpy
, GLXDrawable drawable
)
867 #ifdef GLX_DIRECT_RENDERING
868 __GLXDRIdrawable
*pdraw
= GetGLXDRIDrawable(dpy
, drawable
, NULL
);
872 (*pdraw
->psc
->driScreen
->swapBuffers
)(pdraw
);
877 opcode
= __glXSetupForCommand(dpy
);
883 ** The calling thread may or may not have a current context. If it
884 ** does, send the context tag so the server can do a flush.
886 gc
= __glXGetCurrentContext();
887 if ((gc
!= NULL
) && (dpy
== gc
->currentDpy
) &&
888 ((drawable
== gc
->currentDrawable
) || (drawable
== gc
->currentReadable
)) ) {
889 tag
= gc
->currentContextTag
;
895 xcb_connection_t
* c
= XGetXCBConnection(dpy
);
896 xcb_glx_swap_buffers(c
, tag
, drawable
);
899 xGLXSwapBuffersReq
*req
;
901 /* Send the glXSwapBuffers request */
903 GetReq(GLXSwapBuffers
,req
);
904 req
->reqType
= opcode
;
905 req
->glxCode
= X_GLXSwapBuffers
;
906 req
->drawable
= drawable
;
907 req
->contextTag
= tag
;
916 ** Return configuration information for the given display, screen and
917 ** visual combination.
919 PUBLIC
int glXGetConfig(Display
*dpy
, XVisualInfo
*vis
, int attribute
,
922 __GLXdisplayPrivate
*priv
;
923 __GLXscreenConfigs
*psc
;
924 __GLcontextModes
*modes
;
927 status
= GetGLXPrivScreenConfig( dpy
, vis
->screen
, & priv
, & psc
);
928 if ( status
== Success
) {
929 modes
= _gl_context_modes_find_visual(psc
->visuals
, vis
->visualid
);
931 /* Lookup attribute after first finding a match on the visual */
932 if ( modes
!= NULL
) {
933 return _gl_get_context_mode_data( modes
, attribute
, value_return
);
936 status
= GLX_BAD_VISUAL
;
940 ** If we can't find the config for this visual, this visual is not
941 ** supported by the OpenGL implementation on the server.
943 if ( (status
== GLX_BAD_VISUAL
) && (attribute
== GLX_USE_GL
) ) {
944 *value_return
= GL_FALSE
;
951 /************************************************************************/
954 init_fbconfig_for_chooser( __GLcontextModes
* config
,
955 GLboolean fbconfig_style_tags
)
957 memset( config
, 0, sizeof( __GLcontextModes
) );
958 config
->visualID
= (XID
) GLX_DONT_CARE
;
959 config
->visualType
= GLX_DONT_CARE
;
961 /* glXChooseFBConfig specifies different defaults for these two than
964 if ( fbconfig_style_tags
) {
965 config
->rgbMode
= GL_TRUE
;
966 config
->doubleBufferMode
= GLX_DONT_CARE
;
969 config
->visualRating
= GLX_DONT_CARE
;
970 config
->transparentPixel
= GLX_NONE
;
971 config
->transparentRed
= GLX_DONT_CARE
;
972 config
->transparentGreen
= GLX_DONT_CARE
;
973 config
->transparentBlue
= GLX_DONT_CARE
;
974 config
->transparentAlpha
= GLX_DONT_CARE
;
975 config
->transparentIndex
= GLX_DONT_CARE
;
977 config
->drawableType
= GLX_WINDOW_BIT
;
978 config
->renderType
= (config
->rgbMode
) ? GLX_RGBA_BIT
: GLX_COLOR_INDEX_BIT
;
979 config
->xRenderable
= GLX_DONT_CARE
;
980 config
->fbconfigID
= (GLXFBConfigID
)(GLX_DONT_CARE
);
982 config
->swapMethod
= GLX_DONT_CARE
;
985 #define MATCH_DONT_CARE( param ) \
987 if ( (a-> param != GLX_DONT_CARE) \
988 && (a-> param != b-> param) ) { \
993 #define MATCH_MINIMUM( param ) \
995 if ( (a-> param != GLX_DONT_CARE) \
996 && (a-> param > b-> param) ) { \
1001 #define MATCH_EXACT( param ) \
1003 if ( a-> param != b-> param) { \
1009 * Determine if two GLXFBConfigs are compatible.
1011 * \param a Application specified config to test.
1012 * \param b Server specified config to test against \c a.
1015 fbconfigs_compatible( const __GLcontextModes
* const a
,
1016 const __GLcontextModes
* const b
)
1018 MATCH_DONT_CARE( doubleBufferMode
);
1019 MATCH_DONT_CARE( visualType
);
1020 MATCH_DONT_CARE( visualRating
);
1021 MATCH_DONT_CARE( xRenderable
);
1022 MATCH_DONT_CARE( fbconfigID
);
1023 MATCH_DONT_CARE( swapMethod
);
1025 MATCH_MINIMUM( rgbBits
);
1026 MATCH_MINIMUM( numAuxBuffers
);
1027 MATCH_MINIMUM( redBits
);
1028 MATCH_MINIMUM( greenBits
);
1029 MATCH_MINIMUM( blueBits
);
1030 MATCH_MINIMUM( alphaBits
);
1031 MATCH_MINIMUM( depthBits
);
1032 MATCH_MINIMUM( stencilBits
);
1033 MATCH_MINIMUM( accumRedBits
);
1034 MATCH_MINIMUM( accumGreenBits
);
1035 MATCH_MINIMUM( accumBlueBits
);
1036 MATCH_MINIMUM( accumAlphaBits
);
1037 MATCH_MINIMUM( sampleBuffers
);
1038 MATCH_MINIMUM( maxPbufferWidth
);
1039 MATCH_MINIMUM( maxPbufferHeight
);
1040 MATCH_MINIMUM( maxPbufferPixels
);
1041 MATCH_MINIMUM( samples
);
1043 MATCH_DONT_CARE( stereoMode
);
1044 MATCH_EXACT( level
);
1046 if ( ((a
->drawableType
& b
->drawableType
) == 0)
1047 || ((a
->renderType
& b
->renderType
) == 0) ) {
1052 /* There is a bug in a few of the XFree86 DDX drivers. They contain
1053 * visuals with a "transparent type" of 0 when they really mean GLX_NONE.
1054 * Technically speaking, it is a bug in the DDX driver, but there is
1055 * enough of an installed base to work around the problem here. In any
1056 * case, 0 is not a valid value of the transparent type, so we'll treat 0
1057 * from the app as GLX_DONT_CARE. We'll consider GLX_NONE from the app and
1058 * 0 from the server to be a match to maintain backward compatibility with
1059 * the (broken) drivers.
1062 if ( a
->transparentPixel
!= GLX_DONT_CARE
1063 && a
->transparentPixel
!= 0 ) {
1064 if ( a
->transparentPixel
== GLX_NONE
) {
1065 if ( b
->transparentPixel
!= GLX_NONE
&& b
->transparentPixel
!= 0 )
1068 MATCH_EXACT( transparentPixel
);
1071 switch ( a
->transparentPixel
) {
1072 case GLX_TRANSPARENT_RGB
:
1073 MATCH_DONT_CARE( transparentRed
);
1074 MATCH_DONT_CARE( transparentGreen
);
1075 MATCH_DONT_CARE( transparentBlue
);
1076 MATCH_DONT_CARE( transparentAlpha
);
1079 case GLX_TRANSPARENT_INDEX
:
1080 MATCH_DONT_CARE( transparentIndex
);
1092 /* There's some trickly language in the GLX spec about how this is supposed
1093 * to work. Basically, if a given component size is either not specified
1094 * or the requested size is zero, it is supposed to act like PERFER_SMALLER.
1095 * Well, that's really hard to do with the code as-is. This behavior is
1096 * closer to correct, but still not technically right.
1098 #define PREFER_LARGER_OR_ZERO(comp) \
1100 if ( ((*a)-> comp) != ((*b)-> comp) ) { \
1101 if ( ((*a)-> comp) == 0 ) { \
1104 else if ( ((*b)-> comp) == 0 ) { \
1108 return ((*b)-> comp) - ((*a)-> comp) ; \
1113 #define PREFER_LARGER(comp) \
1115 if ( ((*a)-> comp) != ((*b)-> comp) ) { \
1116 return ((*b)-> comp) - ((*a)-> comp) ; \
1120 #define PREFER_SMALLER(comp) \
1122 if ( ((*a)-> comp) != ((*b)-> comp) ) { \
1123 return ((*a)-> comp) - ((*b)-> comp) ; \
1128 * Compare two GLXFBConfigs. This function is intended to be used as the
1129 * compare function passed in to qsort.
1131 * \returns If \c a is a "better" config, according to the specification of
1132 * SGIX_fbconfig, a number less than zero is returned. If \c b is
1133 * better, then a number greater than zero is return. If both are
1134 * equal, zero is returned.
1135 * \sa qsort, glXChooseVisual, glXChooseFBConfig, glXChooseFBConfigSGIX
1138 fbconfig_compare( const __GLcontextModes
* const * const a
,
1139 const __GLcontextModes
* const * const b
)
1141 /* The order of these comparisons must NOT change. It is defined by
1142 * the GLX 1.3 spec and ARB_multisample.
1145 PREFER_SMALLER( visualSelectGroup
);
1147 /* The sort order for the visualRating is GLX_NONE, GLX_SLOW, and
1148 * GLX_NON_CONFORMANT_CONFIG. It just so happens that this is the
1149 * numerical sort order of the enums (0x8000, 0x8001, and 0x800D).
1151 PREFER_SMALLER( visualRating
);
1153 /* This isn't quite right. It is supposed to compare the sum of the
1154 * components the user specifically set minimums for.
1156 PREFER_LARGER_OR_ZERO( redBits
);
1157 PREFER_LARGER_OR_ZERO( greenBits
);
1158 PREFER_LARGER_OR_ZERO( blueBits
);
1159 PREFER_LARGER_OR_ZERO( alphaBits
);
1161 PREFER_SMALLER( rgbBits
);
1163 if ( ((*a
)->doubleBufferMode
!= (*b
)->doubleBufferMode
) ) {
1164 /* Prefer single-buffer.
1166 return ( !(*a
)->doubleBufferMode
) ? -1 : 1;
1169 PREFER_SMALLER( numAuxBuffers
);
1171 PREFER_LARGER_OR_ZERO( depthBits
);
1172 PREFER_SMALLER( stencilBits
);
1174 /* This isn't quite right. It is supposed to compare the sum of the
1175 * components the user specifically set minimums for.
1177 PREFER_LARGER_OR_ZERO( accumRedBits
);
1178 PREFER_LARGER_OR_ZERO( accumGreenBits
);
1179 PREFER_LARGER_OR_ZERO( accumBlueBits
);
1180 PREFER_LARGER_OR_ZERO( accumAlphaBits
);
1182 PREFER_SMALLER( visualType
);
1184 /* None of the multisample specs say where this comparison should happen,
1185 * so I put it near the end.
1187 PREFER_SMALLER( sampleBuffers
);
1188 PREFER_SMALLER( samples
);
1190 /* None of the pbuffer or fbconfig specs say that this comparison needs
1191 * to happen at all, but it seems like it should.
1193 PREFER_LARGER( maxPbufferWidth
);
1194 PREFER_LARGER( maxPbufferHeight
);
1195 PREFER_LARGER( maxPbufferPixels
);
1202 * Selects and sorts a subset of the supplied configs based on the attributes.
1203 * This function forms to basis of \c glXChooseVisual, \c glXChooseFBConfig,
1204 * and \c glXChooseFBConfigSGIX.
1206 * \param configs Array of pointers to possible configs. The elements of
1207 * this array that do not meet the criteria will be set to
1208 * NULL. The remaining elements will be sorted according to
1209 * the various visual / FBConfig selection rules.
1210 * \param num_configs Number of elements in the \c configs array.
1211 * \param attribList Attributes used select from \c configs. This array is
1212 * terminated by a \c None tag. The array can either take
1213 * the form expected by \c glXChooseVisual (where boolean
1214 * tags do not have a value) or by \c glXChooseFBConfig
1215 * (where every tag has a value).
1216 * \param fbconfig_style_tags Selects whether \c attribList is in
1217 * \c glXChooseVisual style or
1218 * \c glXChooseFBConfig style.
1219 * \returns The number of valid elements left in \c configs.
1221 * \sa glXChooseVisual, glXChooseFBConfig, glXChooseFBConfigSGIX
1224 choose_visual( __GLcontextModes
** configs
, int num_configs
,
1225 const int *attribList
, GLboolean fbconfig_style_tags
)
1227 __GLcontextModes test_config
;
1231 /* This is a fairly direct implementation of the selection method
1232 * described by GLX_SGIX_fbconfig. Start by culling out all the
1233 * configs that are not compatible with the selected parameter
1237 init_fbconfig_for_chooser( & test_config
, fbconfig_style_tags
);
1238 __glXInitializeVisualConfigFromTags( & test_config
, 512,
1239 (const INT32
*) attribList
,
1240 GL_TRUE
, fbconfig_style_tags
);
1243 for ( i
= 0 ; i
< num_configs
; i
++ ) {
1244 if ( fbconfigs_compatible( & test_config
, configs
[i
] ) ) {
1245 configs
[ base
] = configs
[ i
];
1254 if ( base
< num_configs
) {
1255 (void) memset( & configs
[ base
], 0,
1256 sizeof( void * ) * (num_configs
- base
) );
1259 /* After the incompatible configs are removed, the resulting
1260 * list is sorted according to the rules set out in the various
1264 qsort( configs
, base
, sizeof( __GLcontextModes
* ),
1265 (int (*)(const void*, const void*)) fbconfig_compare
);
1273 ** Return the visual that best matches the template. Return None if no
1274 ** visual matches the template.
1276 PUBLIC XVisualInfo
*glXChooseVisual(Display
*dpy
, int screen
, int *attribList
)
1278 XVisualInfo
*visualList
= NULL
;
1279 __GLXdisplayPrivate
*priv
;
1280 __GLXscreenConfigs
*psc
;
1281 __GLcontextModes test_config
;
1282 __GLcontextModes
*modes
;
1283 const __GLcontextModes
*best_config
= NULL
;
1286 ** Get a list of all visuals, return if list is empty
1288 if ( GetGLXPrivScreenConfig( dpy
, screen
, & priv
, & psc
) != Success
) {
1294 ** Build a template from the defaults and the attribute list
1295 ** Free visual list and return if an unexpected token is encountered
1297 init_fbconfig_for_chooser( & test_config
, GL_FALSE
);
1298 __glXInitializeVisualConfigFromTags( & test_config
, 512,
1299 (const INT32
*) attribList
,
1300 GL_TRUE
, GL_FALSE
);
1303 ** Eliminate visuals that don't meet minimum requirements
1304 ** Compute a score for those that do
1305 ** Remember which visual, if any, got the highest score
1307 for ( modes
= psc
->visuals
; modes
!= NULL
; modes
= modes
->next
) {
1308 if ( fbconfigs_compatible( & test_config
, modes
)
1309 && ((best_config
== NULL
)
1310 || (fbconfig_compare( (const __GLcontextModes
* const * const)&modes
, &best_config
) < 0)) ) {
1311 best_config
= modes
;
1316 ** If no visual is acceptable, return None
1317 ** Otherwise, create an XVisualInfo list with just the selected X visual
1320 if (best_config
!= NULL
) {
1321 XVisualInfo visualTemplate
;
1324 visualTemplate
.screen
= screen
;
1325 visualTemplate
.visualid
= best_config
->visualID
;
1326 visualList
= XGetVisualInfo( dpy
, VisualScreenMask
|VisualIDMask
,
1327 &visualTemplate
, &i
);
1334 PUBLIC
const char *glXQueryExtensionsString( Display
*dpy
, int screen
)
1336 __GLXscreenConfigs
*psc
;
1337 __GLXdisplayPrivate
*priv
;
1339 if ( GetGLXPrivScreenConfig( dpy
, screen
, & priv
, & psc
) != Success
) {
1343 if (!psc
->effectiveGLXexts
) {
1344 if (!psc
->serverGLXexts
) {
1345 psc
->serverGLXexts
=
1346 __glXQueryServerString(dpy
, priv
->majorOpcode
, screen
, GLX_EXTENSIONS
);
1349 __glXCalculateUsableExtensions(psc
,
1350 #ifdef GLX_DIRECT_RENDERING
1351 (psc
->driScreen
!= NULL
),
1355 priv
->minorVersion
);
1358 return psc
->effectiveGLXexts
;
1361 PUBLIC
const char *glXGetClientString( Display
*dpy
, int name
)
1365 return (__glXGLXClientVendorName
);
1367 return (__glXGLXClientVersion
);
1368 case GLX_EXTENSIONS
:
1369 return (__glXGetClientExtensions());
1375 PUBLIC
const char *glXQueryServerString( Display
*dpy
, int screen
, int name
)
1377 __GLXscreenConfigs
*psc
;
1378 __GLXdisplayPrivate
*priv
;
1382 if ( GetGLXPrivScreenConfig( dpy
, screen
, & priv
, & psc
) != Success
) {
1388 str
= & priv
->serverGLXvendor
;
1391 str
= & priv
->serverGLXversion
;
1393 case GLX_EXTENSIONS
:
1394 str
= & psc
->serverGLXexts
;
1400 if ( *str
== NULL
) {
1401 *str
= __glXQueryServerString(dpy
, priv
->majorOpcode
, screen
, name
);
1407 void __glXClientInfo ( Display
*dpy
, int opcode
)
1409 char * ext_str
= __glXGetClientGLExtensionString();
1410 int size
= strlen( ext_str
) + 1;
1413 xcb_connection_t
*c
= XGetXCBConnection(dpy
);
1414 xcb_glx_client_info(c
,
1418 (const uint8_t *)ext_str
);
1420 xGLXClientInfoReq
*req
;
1422 /* Send the glXClientInfo request */
1424 GetReq(GLXClientInfo
,req
);
1425 req
->reqType
= opcode
;
1426 req
->glxCode
= X_GLXClientInfo
;
1427 req
->major
= GLX_MAJOR_VERSION
;
1428 req
->minor
= GLX_MINOR_VERSION
;
1430 req
->length
+= (size
+ 3) >> 2;
1431 req
->numbytes
= size
;
1432 Data(dpy
, ext_str
, size
);
1436 #endif /* USE_XCB */
1443 ** EXT_import_context
1446 PUBLIC Display
*glXGetCurrentDisplay(void)
1448 GLXContext gc
= __glXGetCurrentContext();
1449 if (NULL
== gc
) return NULL
;
1450 return gc
->currentDpy
;
1453 PUBLIC
GLX_ALIAS(Display
*, glXGetCurrentDisplayEXT
, (void), (),
1454 glXGetCurrentDisplay
)
1457 * Used internally by libGL to send \c xGLXQueryContextinfoExtReq requests
1460 * \param dpy Display where \c ctx was created.
1461 * \param ctx Context to query.
1462 * \returns \c Success on success. \c GLX_BAD_CONTEXT if \c ctx is invalid,
1463 * or zero if the request failed due to internal problems (i.e.,
1464 * unable to allocate temporary memory, etc.)
1467 * This function dynamically determines whether to use the EXT_import_context
1468 * version of the protocol or the GLX 1.3 version of the protocol.
1470 static int __glXQueryContextInfo(Display
*dpy
, GLXContext ctx
)
1472 __GLXdisplayPrivate
*priv
= __glXInitialize(dpy
);
1473 xGLXQueryContextReply reply
;
1479 return GLX_BAD_CONTEXT
;
1481 opcode
= __glXSetupForCommand(dpy
);
1486 /* Send the glXQueryContextInfoEXT request */
1489 if ( (priv
->majorVersion
> 1) || (priv
->minorVersion
>= 3) ) {
1490 xGLXQueryContextReq
*req
;
1492 GetReq(GLXQueryContext
, req
);
1494 req
->reqType
= opcode
;
1495 req
->glxCode
= X_GLXQueryContext
;
1496 req
->context
= (unsigned int)(ctx
->xid
);
1499 xGLXVendorPrivateReq
*vpreq
;
1500 xGLXQueryContextInfoEXTReq
*req
;
1502 GetReqExtra( GLXVendorPrivate
,
1503 sz_xGLXQueryContextInfoEXTReq
- sz_xGLXVendorPrivateReq
,
1505 req
= (xGLXQueryContextInfoEXTReq
*)vpreq
;
1506 req
->reqType
= opcode
;
1507 req
->glxCode
= X_GLXVendorPrivateWithReply
;
1508 req
->vendorCode
= X_GLXvop_QueryContextInfoEXT
;
1509 req
->context
= (unsigned int)(ctx
->xid
);
1512 _XReply(dpy
, (xReply
*) &reply
, 0, False
);
1514 numValues
= reply
.n
;
1517 else if (numValues
> __GLX_MAX_CONTEXT_PROPS
)
1521 int *propList
, *pProp
;
1525 nPropListBytes
= numValues
<< 3;
1526 propList
= (int *) Xmalloc(nPropListBytes
);
1527 if (NULL
== propList
) {
1530 _XRead(dpy
, (char *)propList
, nPropListBytes
);
1532 for (i
=0; i
< numValues
; i
++) {
1534 case GLX_SHARE_CONTEXT_EXT
:
1535 ctx
->share_xid
= *pProp
++;
1537 case GLX_VISUAL_ID_EXT
:
1539 _gl_context_modes_find_visual(ctx
->psc
->visuals
, *pProp
++);
1542 ctx
->screen
= *pProp
++;
1544 case GLX_FBCONFIG_ID
:
1546 _gl_context_modes_find_fbconfig(ctx
->psc
->configs
, *pProp
++);
1548 case GLX_RENDER_TYPE
:
1549 ctx
->renderType
= *pProp
++;
1556 Xfree((char *)propList
);
1566 glXQueryContext(Display
*dpy
, GLXContext ctx
, int attribute
, int *value
)
1570 /* get the information from the server if we don't have it already */
1571 #ifdef GLX_DIRECT_RENDERING
1572 if (!ctx
->driContext
&& (ctx
->mode
== NULL
)) {
1574 if (ctx
->mode
== NULL
) {
1576 retVal
= __glXQueryContextInfo(dpy
, ctx
);
1577 if (Success
!= retVal
) return retVal
;
1579 switch (attribute
) {
1580 case GLX_SHARE_CONTEXT_EXT
:
1581 *value
= (int)(ctx
->share_xid
);
1583 case GLX_VISUAL_ID_EXT
:
1584 *value
= ctx
->mode
? ctx
->mode
->visualID
: None
;
1587 *value
= (int)(ctx
->screen
);
1589 case GLX_FBCONFIG_ID
:
1590 *value
= ctx
->mode
? ctx
->mode
->fbconfigID
: None
;
1592 case GLX_RENDER_TYPE
:
1593 *value
= (int)(ctx
->renderType
);
1596 return GLX_BAD_ATTRIBUTE
;
1601 PUBLIC
GLX_ALIAS( int, glXQueryContextInfoEXT
,
1602 (Display
*dpy
, GLXContext ctx
, int attribute
, int *value
),
1603 (dpy
, ctx
, attribute
, value
),
1606 PUBLIC GLXContextID
glXGetContextIDEXT(const GLXContext ctx
)
1611 PUBLIC GLXContext
glXImportContextEXT(Display
*dpy
, GLXContextID contextID
)
1615 if (contextID
== None
) {
1618 if (__glXIsDirect(dpy
, contextID
)) {
1622 ctx
= CreateContext(dpy
, NULL
, NULL
, NULL
, False
, contextID
, False
, 0);
1624 if (Success
!= __glXQueryContextInfo(dpy
, ctx
)) {
1631 PUBLIC
void glXFreeContextEXT(Display
*dpy
, GLXContext ctx
)
1633 DestroyContext(dpy
, ctx
);
1639 * GLX 1.3 functions - these are just stubs for now!
1642 PUBLIC GLXFBConfig
*glXChooseFBConfig(Display
*dpy
, int screen
,
1643 const int *attribList
, int *nitems
)
1645 __GLcontextModes
** config_list
;
1649 config_list
= (__GLcontextModes
**)
1650 glXGetFBConfigs( dpy
, screen
, & list_size
);
1652 if ( (config_list
!= NULL
) && (list_size
> 0) && (attribList
!= NULL
) ) {
1653 list_size
= choose_visual( config_list
, list_size
, attribList
,
1655 if ( list_size
== 0 ) {
1656 XFree( config_list
);
1661 *nitems
= list_size
;
1662 return (GLXFBConfig
*) config_list
;
1666 PUBLIC GLXContext
glXCreateNewContext(Display
*dpy
, GLXFBConfig config
,
1667 int renderType
, GLXContext shareList
,
1670 return CreateContext( dpy
, NULL
, (__GLcontextModes
*) config
, shareList
,
1671 allowDirect
, None
, True
, renderType
);
1675 PUBLIC GLXDrawable
glXGetCurrentReadDrawable(void)
1677 GLXContext gc
= __glXGetCurrentContext();
1678 return gc
->currentReadable
;
1682 PUBLIC GLXFBConfig
*glXGetFBConfigs(Display
*dpy
, int screen
, int *nelements
)
1684 __GLXdisplayPrivate
*priv
= __glXInitialize(dpy
);
1685 __GLcontextModes
** config
= NULL
;
1689 if ( (priv
->screenConfigs
!= NULL
)
1690 && (screen
>= 0) && (screen
<= ScreenCount(dpy
))
1691 && (priv
->screenConfigs
[screen
].configs
!= NULL
)
1692 && (priv
->screenConfigs
[screen
].configs
->fbconfigID
!= GLX_DONT_CARE
) ) {
1693 unsigned num_configs
= 0;
1694 __GLcontextModes
* modes
;
1697 for ( modes
= priv
->screenConfigs
[screen
].configs
1699 ; modes
= modes
->next
) {
1700 if ( modes
->fbconfigID
!= GLX_DONT_CARE
) {
1705 config
= (__GLcontextModes
**) Xmalloc( sizeof(__GLcontextModes
*)
1707 if ( config
!= NULL
) {
1708 *nelements
= num_configs
;
1710 for ( modes
= priv
->screenConfigs
[screen
].configs
1712 ; modes
= modes
->next
) {
1713 if ( modes
->fbconfigID
!= GLX_DONT_CARE
) {
1720 return (GLXFBConfig
*) config
;
1724 PUBLIC
int glXGetFBConfigAttrib(Display
*dpy
, GLXFBConfig config
,
1725 int attribute
, int *value
)
1727 __GLcontextModes
* const modes
= ValidateGLXFBConfig( dpy
, config
);
1729 return (modes
!= NULL
)
1730 ? _gl_get_context_mode_data( modes
, attribute
, value
)
1735 PUBLIC XVisualInfo
*glXGetVisualFromFBConfig(Display
*dpy
, GLXFBConfig config
)
1737 XVisualInfo visualTemplate
;
1738 __GLcontextModes
* fbconfig
= (__GLcontextModes
*) config
;
1742 ** Get a list of all visuals, return if list is empty
1744 visualTemplate
.visualid
= fbconfig
->visualID
;
1745 return XGetVisualInfo(dpy
,VisualIDMask
,&visualTemplate
,&count
);
1750 ** GLX_SGI_swap_control
1752 static int __glXSwapIntervalSGI(int interval
)
1754 xGLXVendorPrivateReq
*req
;
1755 GLXContext gc
= __glXGetCurrentContext();
1757 CARD32
* interval_ptr
;
1761 return GLX_BAD_CONTEXT
;
1764 if ( interval
<= 0 ) {
1765 return GLX_BAD_VALUE
;
1768 #ifdef __DRI_SWAP_CONTROL
1769 if (gc
->driContext
) {
1770 __GLXscreenConfigs
* const psc
= GetGLXScreenConfigs( gc
->currentDpy
,
1772 __GLXDRIdrawable
*pdraw
= GetGLXDRIDrawable(gc
->currentDpy
,
1773 gc
->currentDrawable
,
1775 if (psc
->swapControl
!= NULL
&& pdraw
!= NULL
) {
1776 psc
->swapControl
->setSwapInterval(pdraw
->driDrawable
, interval
);
1780 return GLX_BAD_CONTEXT
;
1784 dpy
= gc
->currentDpy
;
1785 opcode
= __glXSetupForCommand(dpy
);
1790 /* Send the glXSwapIntervalSGI request */
1792 GetReqExtra(GLXVendorPrivate
,sizeof(CARD32
),req
);
1793 req
->reqType
= opcode
;
1794 req
->glxCode
= X_GLXVendorPrivate
;
1795 req
->vendorCode
= X_GLXvop_SwapIntervalSGI
;
1796 req
->contextTag
= gc
->currentContextTag
;
1798 interval_ptr
= (CARD32
*) (req
+ 1);
1799 *interval_ptr
= interval
;
1810 ** GLX_MESA_swap_control
1812 static int __glXSwapIntervalMESA(unsigned int interval
)
1814 #ifdef __DRI_SWAP_CONTROL
1815 GLXContext gc
= __glXGetCurrentContext();
1817 if ( interval
< 0 ) {
1818 return GLX_BAD_VALUE
;
1821 if (gc
!= NULL
&& gc
->driContext
) {
1822 __GLXscreenConfigs
* const psc
= GetGLXScreenConfigs( gc
->currentDpy
,
1825 if ( (psc
!= NULL
) && (psc
->driScreen
!= NULL
) ) {
1826 __GLXDRIdrawable
*pdraw
=
1827 GetGLXDRIDrawable(gc
->currentDpy
, gc
->currentDrawable
, NULL
);
1828 if (psc
->swapControl
!= NULL
&& pdraw
!= NULL
) {
1829 psc
->swapControl
->setSwapInterval(pdraw
->driDrawable
, interval
);
1838 return GLX_BAD_CONTEXT
;
1842 static int __glXGetSwapIntervalMESA(void)
1844 #ifdef __DRI_SWAP_CONTROL
1845 GLXContext gc
= __glXGetCurrentContext();
1847 if (gc
!= NULL
&& gc
->driContext
) {
1848 __GLXscreenConfigs
* const psc
= GetGLXScreenConfigs( gc
->currentDpy
,
1851 if ( (psc
!= NULL
) && (psc
->driScreen
!= NULL
) ) {
1852 __GLXDRIdrawable
*pdraw
=
1853 GetGLXDRIDrawable(gc
->currentDpy
, gc
->currentDrawable
, NULL
);
1854 if (psc
->swapControl
!= NULL
&& pdraw
!= NULL
) {
1855 return psc
->swapControl
->getSwapInterval(pdraw
->driDrawable
);
1866 ** GLX_MESA_swap_frame_usage
1869 static GLint
__glXBeginFrameTrackingMESA(Display
*dpy
, GLXDrawable drawable
)
1871 int status
= GLX_BAD_CONTEXT
;
1872 #ifdef __DRI_FRAME_TRACKING
1874 __GLXDRIdrawable
*pdraw
= GetGLXDRIDrawable(dpy
, drawable
, &screen
);
1875 __GLXscreenConfigs
* const psc
= GetGLXScreenConfigs(dpy
, screen
);
1877 if (pdraw
!= NULL
&& psc
->frameTracking
!= NULL
)
1878 status
= psc
->frameTracking
->frameTracking(pdraw
->driDrawable
, GL_TRUE
);
1887 static GLint
__glXEndFrameTrackingMESA(Display
*dpy
, GLXDrawable drawable
)
1889 int status
= GLX_BAD_CONTEXT
;
1890 #ifdef __DRI_FRAME_TRACKING
1892 __GLXDRIdrawable
*pdraw
= GetGLXDRIDrawable(dpy
, drawable
, & screen
);
1893 __GLXscreenConfigs
*psc
= GetGLXScreenConfigs(dpy
, screen
);
1895 if (pdraw
!= NULL
&& psc
->frameTracking
!= NULL
)
1896 status
= psc
->frameTracking
->frameTracking(pdraw
->driDrawable
,
1906 static GLint
__glXGetFrameUsageMESA(Display
*dpy
, GLXDrawable drawable
,
1909 int status
= GLX_BAD_CONTEXT
;
1910 #ifdef __DRI_FRAME_TRACKING
1912 __GLXDRIdrawable
* const pdraw
= GetGLXDRIDrawable(dpy
, drawable
, & screen
);
1913 __GLXscreenConfigs
* const psc
= GetGLXScreenConfigs(dpy
, screen
);
1915 if (pdraw
!= NULL
&& psc
->frameTracking
!= NULL
) {
1916 int64_t sbc
, missedFrames
;
1917 float lastMissedUsage
;
1919 status
= psc
->frameTracking
->queryFrameTracking(pdraw
->driDrawable
,
1934 static GLint
__glXQueryFrameTrackingMESA(Display
*dpy
, GLXDrawable drawable
,
1935 int64_t *sbc
, int64_t *missedFrames
,
1936 GLfloat
*lastMissedUsage
)
1938 int status
= GLX_BAD_CONTEXT
;
1939 #ifdef __DRI_FRAME_TRACKING
1941 __GLXDRIdrawable
*pdraw
= GetGLXDRIDrawable(dpy
, drawable
, & screen
);
1942 __GLXscreenConfigs
* const psc
= GetGLXScreenConfigs(dpy
, screen
);
1944 if (pdraw
!= NULL
&& psc
->frameTracking
!= NULL
) {
1947 status
= psc
->frameTracking
->queryFrameTracking(pdraw
->driDrawable
,
1949 lastMissedUsage
, &usage
);
1955 (void) missedFrames
;
1956 (void) lastMissedUsage
;
1963 ** GLX_SGI_video_sync
1965 static int __glXGetVideoSyncSGI(unsigned int *count
)
1967 /* FIXME: Looking at the GLX_SGI_video_sync spec in the extension registry,
1968 * FIXME: there should be a GLX encoding for this call. I can find no
1969 * FIXME: documentation for the GLX encoding.
1971 #ifdef __DRI_MEDIA_STREAM_COUNTER
1972 GLXContext gc
= __glXGetCurrentContext();
1975 if (gc
!= NULL
&& gc
->driContext
) {
1976 __GLXscreenConfigs
* const psc
= GetGLXScreenConfigs( gc
->currentDpy
,
1978 if ( psc
->msc
&& psc
->driScreen
) {
1979 __GLXDRIdrawable
*pdraw
=
1980 GetGLXDRIDrawable(gc
->currentDpy
, gc
->currentDrawable
, NULL
);
1984 ret
= (*psc
->msc
->getDrawableMSC
)(psc
->__driScreen
,
1985 pdraw
->driDrawable
, &temp
);
1986 *count
= (unsigned) temp
;
1988 return (ret
== 0) ? 0 : GLX_BAD_CONTEXT
;
1994 return GLX_BAD_CONTEXT
;
1997 static int __glXWaitVideoSyncSGI(int divisor
, int remainder
, unsigned int *count
)
1999 #ifdef __DRI_MEDIA_STREAM_COUNTER
2000 GLXContext gc
= __glXGetCurrentContext();
2002 if ( divisor
<= 0 || remainder
< 0 )
2003 return GLX_BAD_VALUE
;
2005 if (gc
!= NULL
&& gc
->driContext
) {
2006 __GLXscreenConfigs
* const psc
= GetGLXScreenConfigs( gc
->currentDpy
,
2008 if (psc
->msc
!= NULL
&& psc
->driScreen
) {
2009 __GLXDRIdrawable
*pdraw
=
2010 GetGLXDRIDrawable(gc
->currentDpy
, gc
->currentDrawable
, NULL
);
2015 ret
= (*psc
->msc
->waitForMSC
)(pdraw
->driDrawable
, 0,
2016 divisor
, remainder
, &msc
, &sbc
);
2017 *count
= (unsigned) msc
;
2018 return (ret
== 0) ? 0 : GLX_BAD_CONTEXT
;
2024 return GLX_BAD_CONTEXT
;
2029 ** GLX_SGIX_fbconfig
2030 ** Many of these functions are aliased to GLX 1.3 entry points in the
2031 ** GLX_functions table.
2034 PUBLIC
GLX_ALIAS(int, glXGetFBConfigAttribSGIX
,
2035 (Display
*dpy
, GLXFBConfigSGIX config
, int attribute
, int *value
),
2036 (dpy
, config
, attribute
, value
),
2037 glXGetFBConfigAttrib
)
2039 PUBLIC
GLX_ALIAS(GLXFBConfigSGIX
*, glXChooseFBConfigSGIX
,
2040 (Display
*dpy
, int screen
, int *attrib_list
, int *nelements
),
2041 (dpy
, screen
, attrib_list
, nelements
),
2044 PUBLIC
GLX_ALIAS(XVisualInfo
*, glXGetVisualFromFBConfigSGIX
,
2045 (Display
* dpy
, GLXFBConfigSGIX config
),
2047 glXGetVisualFromFBConfig
)
2049 PUBLIC GLXPixmap
glXCreateGLXPixmapWithConfigSGIX(Display
*dpy
,
2050 GLXFBConfigSGIX config
, Pixmap pixmap
)
2052 xGLXVendorPrivateWithReplyReq
*vpreq
;
2053 xGLXCreateGLXPixmapWithConfigSGIXReq
*req
;
2054 GLXPixmap xid
= None
;
2056 const __GLcontextModes
* const fbconfig
= (__GLcontextModes
*) config
;
2057 __GLXscreenConfigs
* psc
;
2060 if ( (dpy
== NULL
) || (config
== NULL
) ) {
2064 psc
= GetGLXScreenConfigs( dpy
, fbconfig
->screen
);
2066 && __glXExtensionBitIsEnabled( psc
, SGIX_fbconfig_bit
) ) {
2067 opcode
= __glXSetupForCommand(dpy
);
2072 /* Send the glXCreateGLXPixmapWithConfigSGIX request */
2074 GetReqExtra(GLXVendorPrivateWithReply
,
2075 sz_xGLXCreateGLXPixmapWithConfigSGIXReq
-sz_xGLXVendorPrivateWithReplyReq
,vpreq
);
2076 req
= (xGLXCreateGLXPixmapWithConfigSGIXReq
*)vpreq
;
2077 req
->reqType
= opcode
;
2078 req
->glxCode
= X_GLXVendorPrivateWithReply
;
2079 req
->vendorCode
= X_GLXvop_CreateGLXPixmapWithConfigSGIX
;
2080 req
->screen
= fbconfig
->screen
;
2081 req
->fbconfig
= fbconfig
->fbconfigID
;
2082 req
->pixmap
= pixmap
;
2083 req
->glxpixmap
= xid
= XAllocID(dpy
);
2091 PUBLIC GLXContext
glXCreateContextWithConfigSGIX(Display
*dpy
,
2092 GLXFBConfigSGIX config
, int renderType
,
2093 GLXContext shareList
, Bool allowDirect
)
2095 GLXContext gc
= NULL
;
2096 const __GLcontextModes
* const fbconfig
= (__GLcontextModes
*) config
;
2097 __GLXscreenConfigs
* psc
;
2100 if ( (dpy
== NULL
) || (config
== NULL
) ) {
2104 psc
= GetGLXScreenConfigs( dpy
, fbconfig
->screen
);
2106 && __glXExtensionBitIsEnabled( psc
, SGIX_fbconfig_bit
) ) {
2107 gc
= CreateContext( dpy
, NULL
, (__GLcontextModes
*) config
, shareList
,
2108 allowDirect
, None
, False
, renderType
);
2115 PUBLIC GLXFBConfigSGIX
glXGetFBConfigFromVisualSGIX(Display
*dpy
,
2118 __GLXdisplayPrivate
*priv
;
2119 __GLXscreenConfigs
*psc
;
2121 if ( (GetGLXPrivScreenConfig( dpy
, vis
->screen
, & priv
, & psc
) != Success
)
2122 && __glXExtensionBitIsEnabled( psc
, SGIX_fbconfig_bit
)
2123 && (psc
->configs
->fbconfigID
!= GLX_DONT_CARE
) ) {
2124 return (GLXFBConfigSGIX
) _gl_context_modes_find_visual( psc
->configs
,
2133 ** GLX_SGIX_swap_group
2135 static void __glXJoinSwapGroupSGIX(Display
*dpy
, GLXDrawable drawable
,
2145 ** GLX_SGIX_swap_barrier
2147 static void __glXBindSwapBarrierSGIX(Display
*dpy
, GLXDrawable drawable
,
2155 static Bool
__glXQueryMaxSwapBarriersSGIX(Display
*dpy
, int screen
, int *max
)
2165 ** GLX_OML_sync_control
2167 static Bool
__glXGetSyncValuesOML(Display
*dpy
, GLXDrawable drawable
,
2168 int64_t *ust
, int64_t *msc
, int64_t *sbc
)
2170 #if defined(__DRI_SWAP_BUFFER_COUNTER) && defined(__DRI_MEDIA_STREAM_COUNTER)
2171 __GLXdisplayPrivate
* const priv
= __glXInitialize(dpy
);
2173 if ( priv
!= NULL
) {
2175 __GLXDRIdrawable
*pdraw
= GetGLXDRIDrawable(dpy
, drawable
, &i
);
2176 __GLXscreenConfigs
* const psc
= &priv
->screenConfigs
[i
];
2178 assert( (pdraw
== NULL
) || (i
!= -1) );
2179 return ( (pdraw
&& psc
->sbc
&& psc
->msc
)
2180 && ((*psc
->msc
->getMSC
)(psc
->driScreen
, msc
) == 0)
2181 && ((*psc
->sbc
->getSBC
)(pdraw
->driDrawable
, sbc
) == 0)
2182 && (__glXGetUST(ust
) == 0) );
2194 #ifdef GLX_DIRECT_RENDERING
2196 __driGetMscRateOML(__DRIdrawable
*draw
,
2197 int32_t *numerator
, int32_t *denominator
, void *private)
2200 __GLXscreenConfigs
*psc
;
2201 XF86VidModeModeLine mode_line
;
2204 __GLXDRIdrawable
*glxDraw
= private;
2207 if (XF86VidModeQueryVersion(psc
->dpy
, &i
, &i
) &&
2208 XF86VidModeGetModeLine(psc
->dpy
, psc
->scr
, &dot_clock
, &mode_line
) ) {
2209 unsigned n
= dot_clock
* 1000;
2210 unsigned d
= mode_line
.vtotal
* mode_line
.htotal
;
2212 # define V_INTERLACE 0x010
2213 # define V_DBLSCAN 0x020
2215 if (mode_line
.flags
& V_INTERLACE
)
2217 else if (mode_line
.flags
& V_DBLSCAN
)
2220 /* The OML_sync_control spec requires that if the refresh rate is a
2221 * whole number, that the returned numerator be equal to the refresh
2222 * rate and the denominator be 1.
2230 static const unsigned f
[] = { 13, 11, 7, 5, 3, 2, 0 };
2232 /* This is a poor man's way to reduce a fraction. It's far from
2233 * perfect, but it will work well enough for this situation.
2236 for (i
= 0; f
[i
] != 0; i
++) {
2237 while (n
% f
[i
] == 0 && d
% f
[i
] == 0) {
2258 * Determine the refresh rate of the specified drawable and display.
2260 * \param dpy Display whose refresh rate is to be determined.
2261 * \param drawable Drawable whose refresh rate is to be determined.
2262 * \param numerator Numerator of the refresh rate.
2263 * \param demoninator Denominator of the refresh rate.
2264 * \return If the refresh rate for the specified display and drawable could
2265 * be calculated, True is returned. Otherwise False is returned.
2267 * \note This function is implemented entirely client-side. A lot of other
2268 * functionality is required to export GLX_OML_sync_control, so on
2269 * XFree86 this function can be called for direct-rendering contexts
2270 * when GLX_OML_sync_control appears in the client extension string.
2273 _X_HIDDEN GLboolean
__glXGetMscRateOML(Display
* dpy
, GLXDrawable drawable
,
2274 int32_t * numerator
,
2275 int32_t * denominator
)
2277 #if defined( GLX_DIRECT_RENDERING ) && defined( XF86VIDMODE )
2278 __GLXDRIdrawable
*draw
= GetGLXDRIDrawable(dpy
, drawable
, NULL
);
2283 return __driGetMscRateOML(draw
->driDrawable
, numerator
, denominator
, draw
);
2294 static int64_t __glXSwapBuffersMscOML(Display
*dpy
, GLXDrawable drawable
,
2295 int64_t target_msc
, int64_t divisor
,
2298 #ifdef __DRI_SWAP_BUFFER_COUNTER
2300 __GLXDRIdrawable
*pdraw
= GetGLXDRIDrawable(dpy
, drawable
, &screen
);
2301 __GLXscreenConfigs
* const psc
= GetGLXScreenConfigs( dpy
, screen
);
2303 /* The OML_sync_control spec says these should "generate a GLX_BAD_VALUE
2304 * error", but it also says "It [glXSwapBuffersMscOML] will return a value
2305 * of -1 if the function failed because of errors detected in the input
2308 if ( divisor
< 0 || remainder
< 0 || target_msc
< 0 )
2310 if ( divisor
> 0 && remainder
>= divisor
)
2313 if (pdraw
!= NULL
&& psc
->counters
!= NULL
)
2314 return (*psc
->sbc
->swapBuffersMSC
)(pdraw
->driDrawable
, target_msc
,
2315 divisor
, remainder
);
2328 static Bool
__glXWaitForMscOML(Display
* dpy
, GLXDrawable drawable
,
2329 int64_t target_msc
, int64_t divisor
,
2330 int64_t remainder
, int64_t *ust
,
2331 int64_t *msc
, int64_t *sbc
)
2333 #ifdef __DRI_MEDIA_STREAM_COUNTER
2335 __GLXDRIdrawable
*pdraw
= GetGLXDRIDrawable(dpy
, drawable
, &screen
);
2336 __GLXscreenConfigs
* const psc
= GetGLXScreenConfigs( dpy
, screen
);
2339 /* The OML_sync_control spec says these should "generate a GLX_BAD_VALUE
2340 * error", but the return type in the spec is Bool.
2342 if ( divisor
< 0 || remainder
< 0 || target_msc
< 0 )
2344 if ( divisor
> 0 && remainder
>= divisor
)
2347 if (pdraw
!= NULL
&& psc
->msc
!= NULL
) {
2348 ret
= (*psc
->msc
->waitForMSC
)(pdraw
->driDrawable
, target_msc
,
2349 divisor
, remainder
, msc
, sbc
);
2351 /* __glXGetUST returns zero on success and non-zero on failure.
2352 * This function returns True on success and False on failure.
2354 return ( (ret
== 0) && (__glXGetUST( ust
) == 0) );
2370 static Bool
__glXWaitForSbcOML(Display
* dpy
, GLXDrawable drawable
,
2371 int64_t target_sbc
, int64_t *ust
,
2372 int64_t *msc
, int64_t *sbc
)
2374 #ifdef __DRI_SWAP_BUFFER_COUNTER
2376 __GLXDRIdrawable
*pdraw
= GetGLXDRIDrawable(dpy
, drawable
, &screen
);
2377 __GLXscreenConfigs
* const psc
= GetGLXScreenConfigs( dpy
, screen
);
2380 /* The OML_sync_control spec says this should "generate a GLX_BAD_VALUE
2381 * error", but the return type in the spec is Bool.
2383 if ( target_sbc
< 0 )
2386 if (pdraw
!= NULL
&& psc
->sbc
!= NULL
) {
2387 ret
= (*psc
->sbc
->waitForSBC
)(pdraw
->driDrawable
, target_sbc
, msc
, sbc
);
2389 /* __glXGetUST returns zero on success and non-zero on failure.
2390 * This function returns True on success and False on failure.
2392 return( (ret
== 0) && (__glXGetUST( ust
) == 0) );
2407 * GLX_MESA_allocate_memory
2411 PUBLIC
void *glXAllocateMemoryMESA(Display
*dpy
, int scrn
,
2412 size_t size
, float readFreq
,
2413 float writeFreq
, float priority
)
2415 #ifdef __DRI_ALLOCATE
2416 __GLXscreenConfigs
* const psc
= GetGLXScreenConfigs( dpy
, scrn
);
2418 if (psc
&& psc
->allocate
)
2419 return (*psc
->allocate
->allocateMemory
)(psc
->__driScreen
, size
,
2420 readFreq
, writeFreq
, priority
);
2429 #endif /* GLX_DIRECT_RENDERING */
2435 PUBLIC
void glXFreeMemoryMESA(Display
*dpy
, int scrn
, void *pointer
)
2437 #ifdef __DRI_ALLOCATE
2438 __GLXscreenConfigs
* const psc
= GetGLXScreenConfigs( dpy
, scrn
);
2440 if (psc
&& psc
->allocate
)
2441 (*psc
->allocate
->freeMemory
)(psc
->__driScreen
, pointer
);
2447 #endif /* GLX_DIRECT_RENDERING */
2451 PUBLIC GLuint
glXGetMemoryOffsetMESA( Display
*dpy
, int scrn
,
2452 const void *pointer
)
2454 #ifdef __DRI_ALLOCATE
2455 __GLXscreenConfigs
* const psc
= GetGLXScreenConfigs( dpy
, scrn
);
2457 if (psc
&& psc
->allocate
)
2458 return (*psc
->allocate
->memoryOffset
)(psc
->__driScreen
, pointer
);
2464 #endif /* GLX_DIRECT_RENDERING */
2472 * Mesa extension stubs. These will help reduce portability problems.
2477 * Release all buffers associated with the specified GLX drawable.
2480 * This function was intended for stand-alone Mesa. The issue there is that
2481 * the library doesn't get any notification when a window is closed. In
2482 * DRI there is a similar but slightly different issue. When GLX 1.3 is
2483 * supported, there are 3 different functions to destroy a drawable. It
2484 * should be possible to create GLX protocol (or have it determine which
2485 * protocol to use based on the type of the drawable) to have one function
2486 * do the work of 3. For the direct-rendering case, this function could
2487 * just call the driver's \c __DRIdrawableRec::destroyDrawable function.
2488 * This would reduce the frequency with which \c __driGarbageCollectDrawables
2489 * would need to be used. This really should be done as part of the new DRI
2492 * \sa http://oss.sgi.com/projects/ogl-sample/registry/MESA/release_buffers.txt
2493 * __driGarbageCollectDrawables
2494 * glXDestroyGLXPixmap
2495 * glXDestroyPbuffer glXDestroyPixmap glXDestroyWindow
2496 * glXDestroyGLXPbufferSGIX glXDestroyGLXVideoSourceSGIX
2498 static Bool
__glXReleaseBuffersMESA( Display
*dpy
, GLXDrawable d
)
2506 PUBLIC GLXPixmap
glXCreateGLXPixmapMESA( Display
*dpy
, XVisualInfo
*visual
,
2507 Pixmap pixmap
, Colormap cmap
)
2519 * GLX_MESA_copy_sub_buffer
2521 #define X_GLXvop_CopySubBufferMESA 5154 /* temporary */
2522 static void __glXCopySubBufferMESA(Display
*dpy
, GLXDrawable drawable
,
2523 int x
, int y
, int width
, int height
)
2525 xGLXVendorPrivateReq
*req
;
2528 CARD32
*drawable_ptr
;
2529 INT32
*x_ptr
, *y_ptr
, *w_ptr
, *h_ptr
;
2532 #ifdef __DRI_COPY_SUB_BUFFER
2534 __GLXDRIdrawable
*pdraw
= GetGLXDRIDrawable(dpy
, drawable
, &screen
);
2535 if ( pdraw
!= NULL
) {
2536 __GLXscreenConfigs
* const psc
= GetGLXScreenConfigs(dpy
, screen
);
2537 if (psc
->driScreen
->copySubBuffer
!= NULL
) {
2539 (*psc
->driScreen
->copySubBuffer
)(pdraw
, x
, y
, width
, height
);
2546 opcode
= __glXSetupForCommand(dpy
);
2551 ** The calling thread may or may not have a current context. If it
2552 ** does, send the context tag so the server can do a flush.
2554 gc
= __glXGetCurrentContext();
2555 if ((gc
!= NULL
) && (dpy
== gc
->currentDpy
) &&
2556 ((drawable
== gc
->currentDrawable
) ||
2557 (drawable
== gc
->currentReadable
)) ) {
2558 tag
= gc
->currentContextTag
;
2564 GetReqExtra(GLXVendorPrivate
, sizeof(CARD32
) + sizeof(INT32
) * 4,req
);
2565 req
->reqType
= opcode
;
2566 req
->glxCode
= X_GLXVendorPrivate
;
2567 req
->vendorCode
= X_GLXvop_CopySubBufferMESA
;
2568 req
->contextTag
= tag
;
2570 drawable_ptr
= (CARD32
*) (req
+ 1);
2571 x_ptr
= (INT32
*) (drawable_ptr
+ 1);
2572 y_ptr
= (INT32
*) (drawable_ptr
+ 2);
2573 w_ptr
= (INT32
*) (drawable_ptr
+ 3);
2574 h_ptr
= (INT32
*) (drawable_ptr
+ 4);
2576 *drawable_ptr
= drawable
;
2588 * GLX_EXT_texture_from_pixmap
2591 static void __glXBindTexImageEXT(Display
*dpy
,
2592 GLXDrawable drawable
,
2594 const int *attrib_list
)
2596 xGLXVendorPrivateReq
*req
;
2597 GLXContext gc
= __glXGetCurrentContext();
2598 CARD32
*drawable_ptr
;
2600 CARD32
*num_attrib_ptr
;
2610 while (attrib_list
[i
* 2] != None
)
2614 #ifdef GLX_DIRECT_RENDERING
2615 if (gc
->driContext
) {
2616 __GLXDRIdrawable
*pdraw
= GetGLXDRIDrawable(dpy
, drawable
, NULL
);
2619 (*pdraw
->psc
->texBuffer
->setTexBuffer
)(gc
->__driContext
,
2620 pdraw
->textureTarget
,
2621 pdraw
->driDrawable
);
2627 opcode
= __glXSetupForCommand(dpy
);
2632 GetReqExtra(GLXVendorPrivate
, 12 + 8 * i
,req
);
2633 req
->reqType
= opcode
;
2634 req
->glxCode
= X_GLXVendorPrivate
;
2635 req
->vendorCode
= X_GLXvop_BindTexImageEXT
;
2636 req
->contextTag
= gc
->currentContextTag
;
2638 drawable_ptr
= (CARD32
*) (req
+ 1);
2639 buffer_ptr
= (INT32
*) (drawable_ptr
+ 1);
2640 num_attrib_ptr
= (CARD32
*) (buffer_ptr
+ 1);
2641 attrib_ptr
= (CARD32
*) (num_attrib_ptr
+ 1);
2643 *drawable_ptr
= drawable
;
2644 *buffer_ptr
= buffer
;
2645 *num_attrib_ptr
= (CARD32
) i
;
2649 while (attrib_list
[i
* 2] != None
)
2651 *attrib_ptr
++ = (CARD32
) attrib_list
[i
* 2 + 0];
2652 *attrib_ptr
++ = (CARD32
) attrib_list
[i
* 2 + 1];
2661 static void __glXReleaseTexImageEXT(Display
*dpy
,
2662 GLXDrawable drawable
,
2665 xGLXVendorPrivateReq
*req
;
2666 GLXContext gc
= __glXGetCurrentContext();
2667 CARD32
*drawable_ptr
;
2674 #ifdef GLX_DIRECT_RENDERING
2679 opcode
= __glXSetupForCommand(dpy
);
2684 GetReqExtra(GLXVendorPrivate
, sizeof(CARD32
)+sizeof(INT32
),req
);
2685 req
->reqType
= opcode
;
2686 req
->glxCode
= X_GLXVendorPrivate
;
2687 req
->vendorCode
= X_GLXvop_ReleaseTexImageEXT
;
2688 req
->contextTag
= gc
->currentContextTag
;
2690 drawable_ptr
= (CARD32
*) (req
+ 1);
2691 buffer_ptr
= (INT32
*) (drawable_ptr
+ 1);
2693 *drawable_ptr
= drawable
;
2694 *buffer_ptr
= buffer
;
2702 * \c strdup is actually not a standard ANSI C or POSIX routine.
2703 * Irix will not define it if ANSI mode is in effect.
2708 __glXstrdup(const char *str
)
2711 copy
= (char *) Xmalloc(strlen(str
) + 1);
2719 ** glXGetProcAddress support
2722 struct name_address_pair
{
2727 #define GLX_FUNCTION(f) { # f, (GLvoid *) f }
2728 #define GLX_FUNCTION2(n,f) { # n, (GLvoid *) f }
2730 static const struct name_address_pair GLX_functions
[] = {
2731 /*** GLX_VERSION_1_0 ***/
2732 GLX_FUNCTION( glXChooseVisual
),
2733 GLX_FUNCTION( glXCopyContext
),
2734 GLX_FUNCTION( glXCreateContext
),
2735 GLX_FUNCTION( glXCreateGLXPixmap
),
2736 GLX_FUNCTION( glXDestroyContext
),
2737 GLX_FUNCTION( glXDestroyGLXPixmap
),
2738 GLX_FUNCTION( glXGetConfig
),
2739 GLX_FUNCTION( glXGetCurrentContext
),
2740 GLX_FUNCTION( glXGetCurrentDrawable
),
2741 GLX_FUNCTION( glXIsDirect
),
2742 GLX_FUNCTION( glXMakeCurrent
),
2743 GLX_FUNCTION( glXQueryExtension
),
2744 GLX_FUNCTION( glXQueryVersion
),
2745 GLX_FUNCTION( glXSwapBuffers
),
2746 GLX_FUNCTION( glXUseXFont
),
2747 GLX_FUNCTION( glXWaitGL
),
2748 GLX_FUNCTION( glXWaitX
),
2750 /*** GLX_VERSION_1_1 ***/
2751 GLX_FUNCTION( glXGetClientString
),
2752 GLX_FUNCTION( glXQueryExtensionsString
),
2753 GLX_FUNCTION( glXQueryServerString
),
2755 /*** GLX_VERSION_1_2 ***/
2756 GLX_FUNCTION( glXGetCurrentDisplay
),
2758 /*** GLX_VERSION_1_3 ***/
2759 GLX_FUNCTION( glXChooseFBConfig
),
2760 GLX_FUNCTION( glXCreateNewContext
),
2761 GLX_FUNCTION( glXCreatePbuffer
),
2762 GLX_FUNCTION( glXCreatePixmap
),
2763 GLX_FUNCTION( glXCreateWindow
),
2764 GLX_FUNCTION( glXDestroyPbuffer
),
2765 GLX_FUNCTION( glXDestroyPixmap
),
2766 GLX_FUNCTION( glXDestroyWindow
),
2767 GLX_FUNCTION( glXGetCurrentReadDrawable
),
2768 GLX_FUNCTION( glXGetFBConfigAttrib
),
2769 GLX_FUNCTION( glXGetFBConfigs
),
2770 GLX_FUNCTION( glXGetSelectedEvent
),
2771 GLX_FUNCTION( glXGetVisualFromFBConfig
),
2772 GLX_FUNCTION( glXMakeContextCurrent
),
2773 GLX_FUNCTION( glXQueryContext
),
2774 GLX_FUNCTION( glXQueryDrawable
),
2775 GLX_FUNCTION( glXSelectEvent
),
2777 /*** GLX_SGI_swap_control ***/
2778 GLX_FUNCTION2( glXSwapIntervalSGI
, __glXSwapIntervalSGI
),
2780 /*** GLX_SGI_video_sync ***/
2781 GLX_FUNCTION2( glXGetVideoSyncSGI
, __glXGetVideoSyncSGI
),
2782 GLX_FUNCTION2( glXWaitVideoSyncSGI
, __glXWaitVideoSyncSGI
),
2784 /*** GLX_SGI_make_current_read ***/
2785 GLX_FUNCTION2( glXMakeCurrentReadSGI
, glXMakeContextCurrent
),
2786 GLX_FUNCTION2( glXGetCurrentReadDrawableSGI
, glXGetCurrentReadDrawable
),
2788 /*** GLX_EXT_import_context ***/
2789 GLX_FUNCTION( glXFreeContextEXT
),
2790 GLX_FUNCTION( glXGetContextIDEXT
),
2791 GLX_FUNCTION2( glXGetCurrentDisplayEXT
, glXGetCurrentDisplay
),
2792 GLX_FUNCTION( glXImportContextEXT
),
2793 GLX_FUNCTION2( glXQueryContextInfoEXT
, glXQueryContext
),
2795 /*** GLX_SGIX_fbconfig ***/
2796 GLX_FUNCTION2( glXGetFBConfigAttribSGIX
, glXGetFBConfigAttrib
),
2797 GLX_FUNCTION2( glXChooseFBConfigSGIX
, glXChooseFBConfig
),
2798 GLX_FUNCTION( glXCreateGLXPixmapWithConfigSGIX
),
2799 GLX_FUNCTION( glXCreateContextWithConfigSGIX
),
2800 GLX_FUNCTION2( glXGetVisualFromFBConfigSGIX
, glXGetVisualFromFBConfig
),
2801 GLX_FUNCTION( glXGetFBConfigFromVisualSGIX
),
2803 /*** GLX_SGIX_pbuffer ***/
2804 GLX_FUNCTION( glXCreateGLXPbufferSGIX
),
2805 GLX_FUNCTION( glXDestroyGLXPbufferSGIX
),
2806 GLX_FUNCTION( glXQueryGLXPbufferSGIX
),
2807 GLX_FUNCTION( glXSelectEventSGIX
),
2808 GLX_FUNCTION( glXGetSelectedEventSGIX
),
2810 /*** GLX_SGIX_swap_group ***/
2811 GLX_FUNCTION2( glXJoinSwapGroupSGIX
, __glXJoinSwapGroupSGIX
),
2813 /*** GLX_SGIX_swap_barrier ***/
2814 GLX_FUNCTION2( glXBindSwapBarrierSGIX
, __glXBindSwapBarrierSGIX
),
2815 GLX_FUNCTION2( glXQueryMaxSwapBarriersSGIX
, __glXQueryMaxSwapBarriersSGIX
),
2817 /*** GLX_MESA_allocate_memory ***/
2818 GLX_FUNCTION( glXAllocateMemoryMESA
),
2819 GLX_FUNCTION( glXFreeMemoryMESA
),
2820 GLX_FUNCTION( glXGetMemoryOffsetMESA
),
2822 /*** GLX_MESA_copy_sub_buffer ***/
2823 GLX_FUNCTION2( glXCopySubBufferMESA
, __glXCopySubBufferMESA
),
2825 /*** GLX_MESA_pixmap_colormap ***/
2826 GLX_FUNCTION( glXCreateGLXPixmapMESA
),
2828 /*** GLX_MESA_release_buffers ***/
2829 GLX_FUNCTION2( glXReleaseBuffersMESA
, __glXReleaseBuffersMESA
),
2831 /*** GLX_MESA_swap_control ***/
2832 GLX_FUNCTION2( glXSwapIntervalMESA
, __glXSwapIntervalMESA
),
2833 GLX_FUNCTION2( glXGetSwapIntervalMESA
, __glXGetSwapIntervalMESA
),
2835 /*** GLX_MESA_swap_frame_usage ***/
2836 GLX_FUNCTION2( glXBeginFrameTrackingMESA
, __glXBeginFrameTrackingMESA
),
2837 GLX_FUNCTION2( glXEndFrameTrackingMESA
, __glXEndFrameTrackingMESA
),
2838 GLX_FUNCTION2( glXGetFrameUsageMESA
, __glXGetFrameUsageMESA
),
2839 GLX_FUNCTION2( glXQueryFrameTrackingMESA
, __glXQueryFrameTrackingMESA
),
2841 /*** GLX_ARB_get_proc_address ***/
2842 GLX_FUNCTION( glXGetProcAddressARB
),
2845 GLX_FUNCTION2( glXGetProcAddress
, glXGetProcAddressARB
),
2847 /*** GLX_OML_sync_control ***/
2848 GLX_FUNCTION2( glXWaitForSbcOML
, __glXWaitForSbcOML
),
2849 GLX_FUNCTION2( glXWaitForMscOML
, __glXWaitForMscOML
),
2850 GLX_FUNCTION2( glXSwapBuffersMscOML
, __glXSwapBuffersMscOML
),
2851 GLX_FUNCTION2( glXGetMscRateOML
, __glXGetMscRateOML
),
2852 GLX_FUNCTION2( glXGetSyncValuesOML
, __glXGetSyncValuesOML
),
2854 /*** GLX_EXT_texture_from_pixmap ***/
2855 GLX_FUNCTION2( glXBindTexImageEXT
, __glXBindTexImageEXT
),
2856 GLX_FUNCTION2( glXReleaseTexImageEXT
, __glXReleaseTexImageEXT
),
2858 #ifdef GLX_DIRECT_RENDERING
2859 /*** DRI configuration ***/
2860 GLX_FUNCTION( glXGetScreenDriver
),
2861 GLX_FUNCTION( glXGetDriverConfig
),
2864 { NULL
, NULL
} /* end of list */
2868 static const GLvoid
*
2869 get_glx_proc_address(const char *funcName
)
2873 /* try static functions */
2874 for (i
= 0; GLX_functions
[i
].Name
; i
++) {
2875 if (strcmp(GLX_functions
[i
].Name
, funcName
) == 0)
2876 return GLX_functions
[i
].Address
;
2884 * Get the address of a named GL function. This is the pre-GLX 1.4 name for
2885 * \c glXGetProcAddress.
2887 * \param procName Name of a GL or GLX function.
2888 * \returns A pointer to the named function
2890 * \sa glXGetProcAddress
2892 PUBLIC
void (*glXGetProcAddressARB(const GLubyte
*procName
))( void )
2894 typedef void (*gl_function
)( void );
2898 /* Search the table of GLX and internal functions first. If that
2899 * fails and the supplied name could be a valid core GL name, try
2900 * searching the core GL function table. This check is done to prevent
2901 * DRI based drivers from searching the core GL function table for
2902 * internal API functions.
2905 f
= (gl_function
) get_glx_proc_address((const char *) procName
);
2906 if ( (f
== NULL
) && (procName
[0] == 'g') && (procName
[1] == 'l')
2907 && (procName
[2] != 'X') ) {
2908 f
= (gl_function
) _glapi_get_proc_address((const char *) procName
);
2915 * Get the address of a named GL function. This is the GLX 1.4 name for
2916 * \c glXGetProcAddressARB.
2918 * \param procName Name of a GL or GLX function.
2919 * \returns A pointer to the named function
2921 * \sa glXGetProcAddressARB
2923 PUBLIC
void (*glXGetProcAddress(const GLubyte
*procName
))( void )
2924 #if defined(__GNUC__) && !defined(GLX_ALIAS_UNSUPPORTED)
2925 __attribute__ ((alias ("glXGetProcAddressARB")));
2928 return glXGetProcAddressARB(procName
);
2930 #endif /* __GNUC__ */
2933 #ifdef GLX_DIRECT_RENDERING
2935 * Get the unadjusted system time (UST). Currently, the UST is measured in
2936 * microseconds since Epoc. The actual resolution of the UST may vary from
2937 * system to system, and the units may vary from release to release.
2938 * Drivers should not call this function directly. They should instead use
2939 * \c glXGetProcAddress to obtain a pointer to the function.
2941 * \param ust Location to store the 64-bit UST
2942 * \returns Zero on success or a negative errno value on failure.
2944 * \sa glXGetProcAddress, PFNGLXGETUSTPROC
2946 * \since Internal API version 20030317.
2948 _X_HIDDEN
int __glXGetUST( int64_t * ust
)
2952 if ( ust
== NULL
) {
2956 if ( gettimeofday( & tv
, NULL
) == 0 ) {
2957 ust
[0] = (tv
.tv_sec
* 1000000) + tv
.tv_usec
;
2963 #endif /* GLX_DIRECT_RENDERING */