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
)
864 xGLXSwapBuffersReq
*req
;
868 #ifdef GLX_DIRECT_RENDERING
869 __GLXDRIdrawable
*pdraw
= GetGLXDRIDrawable(dpy
, drawable
, NULL
);
873 (*pdraw
->psc
->driScreen
->swapBuffers
)(pdraw
);
878 opcode
= __glXSetupForCommand(dpy
);
884 ** The calling thread may or may not have a current context. If it
885 ** does, send the context tag so the server can do a flush.
887 gc
= __glXGetCurrentContext();
888 if ((gc
!= NULL
) && (dpy
== gc
->currentDpy
) &&
889 ((drawable
== gc
->currentDrawable
) || (drawable
== gc
->currentReadable
)) ) {
890 tag
= gc
->currentContextTag
;
895 /* Send the glXSwapBuffers request */
897 GetReq(GLXSwapBuffers
,req
);
898 req
->reqType
= opcode
;
899 req
->glxCode
= X_GLXSwapBuffers
;
900 req
->drawable
= drawable
;
901 req
->contextTag
= tag
;
909 ** Return configuration information for the given display, screen and
910 ** visual combination.
912 PUBLIC
int glXGetConfig(Display
*dpy
, XVisualInfo
*vis
, int attribute
,
915 __GLXdisplayPrivate
*priv
;
916 __GLXscreenConfigs
*psc
;
917 __GLcontextModes
*modes
;
920 status
= GetGLXPrivScreenConfig( dpy
, vis
->screen
, & priv
, & psc
);
921 if ( status
== Success
) {
922 modes
= _gl_context_modes_find_visual(psc
->visuals
, vis
->visualid
);
924 /* Lookup attribute after first finding a match on the visual */
925 if ( modes
!= NULL
) {
926 return _gl_get_context_mode_data( modes
, attribute
, value_return
);
929 status
= GLX_BAD_VISUAL
;
933 ** If we can't find the config for this visual, this visual is not
934 ** supported by the OpenGL implementation on the server.
936 if ( (status
== GLX_BAD_VISUAL
) && (attribute
== GLX_USE_GL
) ) {
937 *value_return
= GL_FALSE
;
944 /************************************************************************/
947 init_fbconfig_for_chooser( __GLcontextModes
* config
,
948 GLboolean fbconfig_style_tags
)
950 memset( config
, 0, sizeof( __GLcontextModes
) );
951 config
->visualID
= (XID
) GLX_DONT_CARE
;
952 config
->visualType
= GLX_DONT_CARE
;
954 /* glXChooseFBConfig specifies different defaults for these two than
957 if ( fbconfig_style_tags
) {
958 config
->rgbMode
= GL_TRUE
;
959 config
->doubleBufferMode
= GLX_DONT_CARE
;
962 config
->visualRating
= GLX_DONT_CARE
;
963 config
->transparentPixel
= GLX_NONE
;
964 config
->transparentRed
= GLX_DONT_CARE
;
965 config
->transparentGreen
= GLX_DONT_CARE
;
966 config
->transparentBlue
= GLX_DONT_CARE
;
967 config
->transparentAlpha
= GLX_DONT_CARE
;
968 config
->transparentIndex
= GLX_DONT_CARE
;
970 config
->drawableType
= GLX_WINDOW_BIT
;
971 config
->renderType
= (config
->rgbMode
) ? GLX_RGBA_BIT
: GLX_COLOR_INDEX_BIT
;
972 config
->xRenderable
= GLX_DONT_CARE
;
973 config
->fbconfigID
= (GLXFBConfigID
)(GLX_DONT_CARE
);
975 config
->swapMethod
= GLX_DONT_CARE
;
978 #define MATCH_DONT_CARE( param ) \
980 if ( (a-> param != GLX_DONT_CARE) \
981 && (a-> param != b-> param) ) { \
986 #define MATCH_MINIMUM( param ) \
988 if ( (a-> param != GLX_DONT_CARE) \
989 && (a-> param > b-> param) ) { \
994 #define MATCH_EXACT( param ) \
996 if ( a-> param != b-> param) { \
1002 * Determine if two GLXFBConfigs are compatible.
1004 * \param a Application specified config to test.
1005 * \param b Server specified config to test against \c a.
1008 fbconfigs_compatible( const __GLcontextModes
* const a
,
1009 const __GLcontextModes
* const b
)
1011 MATCH_DONT_CARE( doubleBufferMode
);
1012 MATCH_DONT_CARE( visualType
);
1013 MATCH_DONT_CARE( visualRating
);
1014 MATCH_DONT_CARE( xRenderable
);
1015 MATCH_DONT_CARE( fbconfigID
);
1016 MATCH_DONT_CARE( swapMethod
);
1018 MATCH_MINIMUM( rgbBits
);
1019 MATCH_MINIMUM( numAuxBuffers
);
1020 MATCH_MINIMUM( redBits
);
1021 MATCH_MINIMUM( greenBits
);
1022 MATCH_MINIMUM( blueBits
);
1023 MATCH_MINIMUM( alphaBits
);
1024 MATCH_MINIMUM( depthBits
);
1025 MATCH_MINIMUM( stencilBits
);
1026 MATCH_MINIMUM( accumRedBits
);
1027 MATCH_MINIMUM( accumGreenBits
);
1028 MATCH_MINIMUM( accumBlueBits
);
1029 MATCH_MINIMUM( accumAlphaBits
);
1030 MATCH_MINIMUM( sampleBuffers
);
1031 MATCH_MINIMUM( maxPbufferWidth
);
1032 MATCH_MINIMUM( maxPbufferHeight
);
1033 MATCH_MINIMUM( maxPbufferPixels
);
1034 MATCH_MINIMUM( samples
);
1036 MATCH_DONT_CARE( stereoMode
);
1037 MATCH_EXACT( level
);
1039 if ( ((a
->drawableType
& b
->drawableType
) == 0)
1040 || ((a
->renderType
& b
->renderType
) == 0) ) {
1045 /* There is a bug in a few of the XFree86 DDX drivers. They contain
1046 * visuals with a "transparent type" of 0 when they really mean GLX_NONE.
1047 * Technically speaking, it is a bug in the DDX driver, but there is
1048 * enough of an installed base to work around the problem here. In any
1049 * case, 0 is not a valid value of the transparent type, so we'll treat 0
1050 * from the app as GLX_DONT_CARE. We'll consider GLX_NONE from the app and
1051 * 0 from the server to be a match to maintain backward compatibility with
1052 * the (broken) drivers.
1055 if ( a
->transparentPixel
!= GLX_DONT_CARE
1056 && a
->transparentPixel
!= 0 ) {
1057 if ( a
->transparentPixel
== GLX_NONE
) {
1058 if ( b
->transparentPixel
!= GLX_NONE
&& b
->transparentPixel
!= 0 )
1061 MATCH_EXACT( transparentPixel
);
1064 switch ( a
->transparentPixel
) {
1065 case GLX_TRANSPARENT_RGB
:
1066 MATCH_DONT_CARE( transparentRed
);
1067 MATCH_DONT_CARE( transparentGreen
);
1068 MATCH_DONT_CARE( transparentBlue
);
1069 MATCH_DONT_CARE( transparentAlpha
);
1072 case GLX_TRANSPARENT_INDEX
:
1073 MATCH_DONT_CARE( transparentIndex
);
1085 /* There's some trickly language in the GLX spec about how this is supposed
1086 * to work. Basically, if a given component size is either not specified
1087 * or the requested size is zero, it is supposed to act like PERFER_SMALLER.
1088 * Well, that's really hard to do with the code as-is. This behavior is
1089 * closer to correct, but still not technically right.
1091 #define PREFER_LARGER_OR_ZERO(comp) \
1093 if ( ((*a)-> comp) != ((*b)-> comp) ) { \
1094 if ( ((*a)-> comp) == 0 ) { \
1097 else if ( ((*b)-> comp) == 0 ) { \
1101 return ((*b)-> comp) - ((*a)-> comp) ; \
1106 #define PREFER_LARGER(comp) \
1108 if ( ((*a)-> comp) != ((*b)-> comp) ) { \
1109 return ((*b)-> comp) - ((*a)-> comp) ; \
1113 #define PREFER_SMALLER(comp) \
1115 if ( ((*a)-> comp) != ((*b)-> comp) ) { \
1116 return ((*a)-> comp) - ((*b)-> comp) ; \
1121 * Compare two GLXFBConfigs. This function is intended to be used as the
1122 * compare function passed in to qsort.
1124 * \returns If \c a is a "better" config, according to the specification of
1125 * SGIX_fbconfig, a number less than zero is returned. If \c b is
1126 * better, then a number greater than zero is return. If both are
1127 * equal, zero is returned.
1128 * \sa qsort, glXChooseVisual, glXChooseFBConfig, glXChooseFBConfigSGIX
1131 fbconfig_compare( const __GLcontextModes
* const * const a
,
1132 const __GLcontextModes
* const * const b
)
1134 /* The order of these comparisons must NOT change. It is defined by
1135 * the GLX 1.3 spec and ARB_multisample.
1138 PREFER_SMALLER( visualSelectGroup
);
1140 /* The sort order for the visualRating is GLX_NONE, GLX_SLOW, and
1141 * GLX_NON_CONFORMANT_CONFIG. It just so happens that this is the
1142 * numerical sort order of the enums (0x8000, 0x8001, and 0x800D).
1144 PREFER_SMALLER( visualRating
);
1146 /* This isn't quite right. It is supposed to compare the sum of the
1147 * components the user specifically set minimums for.
1149 PREFER_LARGER_OR_ZERO( redBits
);
1150 PREFER_LARGER_OR_ZERO( greenBits
);
1151 PREFER_LARGER_OR_ZERO( blueBits
);
1152 PREFER_LARGER_OR_ZERO( alphaBits
);
1154 PREFER_SMALLER( rgbBits
);
1156 if ( ((*a
)->doubleBufferMode
!= (*b
)->doubleBufferMode
) ) {
1157 /* Prefer single-buffer.
1159 return ( !(*a
)->doubleBufferMode
) ? -1 : 1;
1162 PREFER_SMALLER( numAuxBuffers
);
1164 PREFER_LARGER_OR_ZERO( depthBits
);
1165 PREFER_SMALLER( stencilBits
);
1167 /* This isn't quite right. It is supposed to compare the sum of the
1168 * components the user specifically set minimums for.
1170 PREFER_LARGER_OR_ZERO( accumRedBits
);
1171 PREFER_LARGER_OR_ZERO( accumGreenBits
);
1172 PREFER_LARGER_OR_ZERO( accumBlueBits
);
1173 PREFER_LARGER_OR_ZERO( accumAlphaBits
);
1175 PREFER_SMALLER( visualType
);
1177 /* None of the multisample specs say where this comparison should happen,
1178 * so I put it near the end.
1180 PREFER_SMALLER( sampleBuffers
);
1181 PREFER_SMALLER( samples
);
1183 /* None of the pbuffer or fbconfig specs say that this comparison needs
1184 * to happen at all, but it seems like it should.
1186 PREFER_LARGER( maxPbufferWidth
);
1187 PREFER_LARGER( maxPbufferHeight
);
1188 PREFER_LARGER( maxPbufferPixels
);
1195 * Selects and sorts a subset of the supplied configs based on the attributes.
1196 * This function forms to basis of \c glXChooseVisual, \c glXChooseFBConfig,
1197 * and \c glXChooseFBConfigSGIX.
1199 * \param configs Array of pointers to possible configs. The elements of
1200 * this array that do not meet the criteria will be set to
1201 * NULL. The remaining elements will be sorted according to
1202 * the various visual / FBConfig selection rules.
1203 * \param num_configs Number of elements in the \c configs array.
1204 * \param attribList Attributes used select from \c configs. This array is
1205 * terminated by a \c None tag. The array can either take
1206 * the form expected by \c glXChooseVisual (where boolean
1207 * tags do not have a value) or by \c glXChooseFBConfig
1208 * (where every tag has a value).
1209 * \param fbconfig_style_tags Selects whether \c attribList is in
1210 * \c glXChooseVisual style or
1211 * \c glXChooseFBConfig style.
1212 * \returns The number of valid elements left in \c configs.
1214 * \sa glXChooseVisual, glXChooseFBConfig, glXChooseFBConfigSGIX
1217 choose_visual( __GLcontextModes
** configs
, int num_configs
,
1218 const int *attribList
, GLboolean fbconfig_style_tags
)
1220 __GLcontextModes test_config
;
1224 /* This is a fairly direct implementation of the selection method
1225 * described by GLX_SGIX_fbconfig. Start by culling out all the
1226 * configs that are not compatible with the selected parameter
1230 init_fbconfig_for_chooser( & test_config
, fbconfig_style_tags
);
1231 __glXInitializeVisualConfigFromTags( & test_config
, 512,
1232 (const INT32
*) attribList
,
1233 GL_TRUE
, fbconfig_style_tags
);
1236 for ( i
= 0 ; i
< num_configs
; i
++ ) {
1237 if ( fbconfigs_compatible( & test_config
, configs
[i
] ) ) {
1238 configs
[ base
] = configs
[ i
];
1247 if ( base
< num_configs
) {
1248 (void) memset( & configs
[ base
], 0,
1249 sizeof( void * ) * (num_configs
- base
) );
1252 /* After the incompatible configs are removed, the resulting
1253 * list is sorted according to the rules set out in the various
1257 qsort( configs
, base
, sizeof( __GLcontextModes
* ),
1258 (int (*)(const void*, const void*)) fbconfig_compare
);
1266 ** Return the visual that best matches the template. Return None if no
1267 ** visual matches the template.
1269 PUBLIC XVisualInfo
*glXChooseVisual(Display
*dpy
, int screen
, int *attribList
)
1271 XVisualInfo
*visualList
= NULL
;
1272 __GLXdisplayPrivate
*priv
;
1273 __GLXscreenConfigs
*psc
;
1274 __GLcontextModes test_config
;
1275 __GLcontextModes
*modes
;
1276 const __GLcontextModes
*best_config
= NULL
;
1279 ** Get a list of all visuals, return if list is empty
1281 if ( GetGLXPrivScreenConfig( dpy
, screen
, & priv
, & psc
) != Success
) {
1287 ** Build a template from the defaults and the attribute list
1288 ** Free visual list and return if an unexpected token is encountered
1290 init_fbconfig_for_chooser( & test_config
, GL_FALSE
);
1291 __glXInitializeVisualConfigFromTags( & test_config
, 512,
1292 (const INT32
*) attribList
,
1293 GL_TRUE
, GL_FALSE
);
1296 ** Eliminate visuals that don't meet minimum requirements
1297 ** Compute a score for those that do
1298 ** Remember which visual, if any, got the highest score
1300 for ( modes
= psc
->visuals
; modes
!= NULL
; modes
= modes
->next
) {
1301 if ( fbconfigs_compatible( & test_config
, modes
)
1302 && ((best_config
== NULL
)
1303 || (fbconfig_compare( (const __GLcontextModes
* const * const)&modes
, &best_config
) < 0)) ) {
1304 best_config
= modes
;
1309 ** If no visual is acceptable, return None
1310 ** Otherwise, create an XVisualInfo list with just the selected X visual
1313 if (best_config
!= NULL
) {
1314 XVisualInfo visualTemplate
;
1317 visualTemplate
.screen
= screen
;
1318 visualTemplate
.visualid
= best_config
->visualID
;
1319 visualList
= XGetVisualInfo( dpy
, VisualScreenMask
|VisualIDMask
,
1320 &visualTemplate
, &i
);
1327 PUBLIC
const char *glXQueryExtensionsString( Display
*dpy
, int screen
)
1329 __GLXscreenConfigs
*psc
;
1330 __GLXdisplayPrivate
*priv
;
1332 if ( GetGLXPrivScreenConfig( dpy
, screen
, & priv
, & psc
) != Success
) {
1336 if (!psc
->effectiveGLXexts
) {
1337 if (!psc
->serverGLXexts
) {
1338 psc
->serverGLXexts
=
1339 __glXQueryServerString(dpy
, screen
, GLX_EXTENSIONS
);
1342 __glXCalculateUsableExtensions(psc
,
1343 #ifdef GLX_DIRECT_RENDERING
1344 (psc
->driScreen
!= NULL
),
1348 priv
->minorVersion
);
1351 return psc
->effectiveGLXexts
;
1354 PUBLIC
const char *glXGetClientString( Display
*dpy
, int name
)
1358 return (__glXGLXClientVendorName
);
1360 return (__glXGLXClientVersion
);
1361 case GLX_EXTENSIONS
:
1362 return (__glXGetClientExtensions());
1368 PUBLIC
const char *glXQueryServerString( Display
*dpy
, int screen
, int name
)
1370 __GLXscreenConfigs
*psc
;
1371 __GLXdisplayPrivate
*priv
;
1375 if ( GetGLXPrivScreenConfig( dpy
, screen
, & priv
, & psc
) != Success
) {
1381 str
= & priv
->serverGLXvendor
;
1384 str
= & priv
->serverGLXversion
;
1386 case GLX_EXTENSIONS
:
1387 str
= & psc
->serverGLXexts
;
1393 if ( *str
== NULL
) {
1394 *str
= __glXQueryServerString(dpy
, screen
, name
);
1400 void __glXClientInfo ( Display
*dpy
, int opcode
)
1402 xGLXClientInfoReq
*req
;
1404 char * ext_str
= __glXGetClientGLExtensionString();
1406 /* Send the glXClientInfo request */
1408 GetReq(GLXClientInfo
,req
);
1409 req
->reqType
= opcode
;
1410 req
->glxCode
= X_GLXClientInfo
;
1411 req
->major
= GLX_MAJOR_VERSION
;
1412 req
->minor
= GLX_MINOR_VERSION
;
1414 size
= strlen( ext_str
) + 1;
1415 req
->length
+= (size
+ 3) >> 2;
1416 req
->numbytes
= size
;
1417 Data(dpy
, ext_str
, size
);
1427 ** EXT_import_context
1430 PUBLIC Display
*glXGetCurrentDisplay(void)
1432 GLXContext gc
= __glXGetCurrentContext();
1433 if (NULL
== gc
) return NULL
;
1434 return gc
->currentDpy
;
1437 PUBLIC
GLX_ALIAS(Display
*, glXGetCurrentDisplayEXT
, (void), (),
1438 glXGetCurrentDisplay
)
1441 * Used internally by libGL to send \c xGLXQueryContextinfoExtReq requests
1444 * \param dpy Display where \c ctx was created.
1445 * \param ctx Context to query.
1446 * \returns \c Success on success. \c GLX_BAD_CONTEXT if \c ctx is invalid,
1447 * or zero if the request failed due to internal problems (i.e.,
1448 * unable to allocate temporary memory, etc.)
1451 * This function dynamically determines whether to use the EXT_import_context
1452 * version of the protocol or the GLX 1.3 version of the protocol.
1454 static int __glXQueryContextInfo(Display
*dpy
, GLXContext ctx
)
1456 __GLXdisplayPrivate
*priv
= __glXInitialize(dpy
);
1457 xGLXQueryContextReply reply
;
1463 return GLX_BAD_CONTEXT
;
1465 opcode
= __glXSetupForCommand(dpy
);
1470 /* Send the glXQueryContextInfoEXT request */
1473 if ( (priv
->majorVersion
> 1) || (priv
->minorVersion
>= 3) ) {
1474 xGLXQueryContextReq
*req
;
1476 GetReq(GLXQueryContext
, req
);
1478 req
->reqType
= opcode
;
1479 req
->glxCode
= X_GLXQueryContext
;
1480 req
->context
= (unsigned int)(ctx
->xid
);
1483 xGLXVendorPrivateReq
*vpreq
;
1484 xGLXQueryContextInfoEXTReq
*req
;
1486 GetReqExtra( GLXVendorPrivate
,
1487 sz_xGLXQueryContextInfoEXTReq
- sz_xGLXVendorPrivateReq
,
1489 req
= (xGLXQueryContextInfoEXTReq
*)vpreq
;
1490 req
->reqType
= opcode
;
1491 req
->glxCode
= X_GLXVendorPrivateWithReply
;
1492 req
->vendorCode
= X_GLXvop_QueryContextInfoEXT
;
1493 req
->context
= (unsigned int)(ctx
->xid
);
1496 _XReply(dpy
, (xReply
*) &reply
, 0, False
);
1498 numValues
= reply
.n
;
1501 else if (numValues
> __GLX_MAX_CONTEXT_PROPS
)
1505 int *propList
, *pProp
;
1509 nPropListBytes
= numValues
<< 3;
1510 propList
= (int *) Xmalloc(nPropListBytes
);
1511 if (NULL
== propList
) {
1514 _XRead(dpy
, (char *)propList
, nPropListBytes
);
1516 for (i
=0; i
< numValues
; i
++) {
1518 case GLX_SHARE_CONTEXT_EXT
:
1519 ctx
->share_xid
= *pProp
++;
1521 case GLX_VISUAL_ID_EXT
:
1523 _gl_context_modes_find_visual(ctx
->psc
->visuals
, *pProp
++);
1526 ctx
->screen
= *pProp
++;
1528 case GLX_FBCONFIG_ID
:
1530 _gl_context_modes_find_fbconfig(ctx
->psc
->configs
, *pProp
++);
1532 case GLX_RENDER_TYPE
:
1533 ctx
->renderType
= *pProp
++;
1540 Xfree((char *)propList
);
1550 glXQueryContext(Display
*dpy
, GLXContext ctx
, int attribute
, int *value
)
1554 /* get the information from the server if we don't have it already */
1555 #ifdef GLX_DIRECT_RENDERING
1556 if (!ctx
->driContext
&& (ctx
->mode
== NULL
)) {
1558 if (ctx
->mode
== NULL
) {
1560 retVal
= __glXQueryContextInfo(dpy
, ctx
);
1561 if (Success
!= retVal
) return retVal
;
1563 switch (attribute
) {
1564 case GLX_SHARE_CONTEXT_EXT
:
1565 *value
= (int)(ctx
->share_xid
);
1567 case GLX_VISUAL_ID_EXT
:
1568 *value
= ctx
->mode
? ctx
->mode
->visualID
: None
;
1571 *value
= (int)(ctx
->screen
);
1573 case GLX_FBCONFIG_ID
:
1574 *value
= ctx
->mode
? ctx
->mode
->fbconfigID
: None
;
1576 case GLX_RENDER_TYPE
:
1577 *value
= (int)(ctx
->renderType
);
1580 return GLX_BAD_ATTRIBUTE
;
1585 PUBLIC
GLX_ALIAS( int, glXQueryContextInfoEXT
,
1586 (Display
*dpy
, GLXContext ctx
, int attribute
, int *value
),
1587 (dpy
, ctx
, attribute
, value
),
1590 PUBLIC GLXContextID
glXGetContextIDEXT(const GLXContext ctx
)
1595 PUBLIC GLXContext
glXImportContextEXT(Display
*dpy
, GLXContextID contextID
)
1599 if (contextID
== None
) {
1602 if (__glXIsDirect(dpy
, contextID
)) {
1606 ctx
= CreateContext(dpy
, NULL
, NULL
, NULL
, False
, contextID
, False
, 0);
1608 if (Success
!= __glXQueryContextInfo(dpy
, ctx
)) {
1615 PUBLIC
void glXFreeContextEXT(Display
*dpy
, GLXContext ctx
)
1617 DestroyContext(dpy
, ctx
);
1623 * GLX 1.3 functions - these are just stubs for now!
1626 PUBLIC GLXFBConfig
*glXChooseFBConfig(Display
*dpy
, int screen
,
1627 const int *attribList
, int *nitems
)
1629 __GLcontextModes
** config_list
;
1633 config_list
= (__GLcontextModes
**)
1634 glXGetFBConfigs( dpy
, screen
, & list_size
);
1636 if ( (config_list
!= NULL
) && (list_size
> 0) && (attribList
!= NULL
) ) {
1637 list_size
= choose_visual( config_list
, list_size
, attribList
,
1639 if ( list_size
== 0 ) {
1640 XFree( config_list
);
1645 *nitems
= list_size
;
1646 return (GLXFBConfig
*) config_list
;
1650 PUBLIC GLXContext
glXCreateNewContext(Display
*dpy
, GLXFBConfig config
,
1651 int renderType
, GLXContext shareList
,
1654 return CreateContext( dpy
, NULL
, (__GLcontextModes
*) config
, shareList
,
1655 allowDirect
, None
, True
, renderType
);
1659 PUBLIC GLXDrawable
glXGetCurrentReadDrawable(void)
1661 GLXContext gc
= __glXGetCurrentContext();
1662 return gc
->currentReadable
;
1666 PUBLIC GLXFBConfig
*glXGetFBConfigs(Display
*dpy
, int screen
, int *nelements
)
1668 __GLXdisplayPrivate
*priv
= __glXInitialize(dpy
);
1669 __GLcontextModes
** config
= NULL
;
1673 if ( (priv
->screenConfigs
!= NULL
)
1674 && (screen
>= 0) && (screen
<= ScreenCount(dpy
))
1675 && (priv
->screenConfigs
[screen
].configs
!= NULL
)
1676 && (priv
->screenConfigs
[screen
].configs
->fbconfigID
!= GLX_DONT_CARE
) ) {
1677 unsigned num_configs
= 0;
1678 __GLcontextModes
* modes
;
1681 for ( modes
= priv
->screenConfigs
[screen
].configs
1683 ; modes
= modes
->next
) {
1684 if ( modes
->fbconfigID
!= GLX_DONT_CARE
) {
1689 config
= (__GLcontextModes
**) Xmalloc( sizeof(__GLcontextModes
*)
1691 if ( config
!= NULL
) {
1692 *nelements
= num_configs
;
1694 for ( modes
= priv
->screenConfigs
[screen
].configs
1696 ; modes
= modes
->next
) {
1697 if ( modes
->fbconfigID
!= GLX_DONT_CARE
) {
1704 return (GLXFBConfig
*) config
;
1708 PUBLIC
int glXGetFBConfigAttrib(Display
*dpy
, GLXFBConfig config
,
1709 int attribute
, int *value
)
1711 __GLcontextModes
* const modes
= ValidateGLXFBConfig( dpy
, config
);
1713 return (modes
!= NULL
)
1714 ? _gl_get_context_mode_data( modes
, attribute
, value
)
1719 PUBLIC XVisualInfo
*glXGetVisualFromFBConfig(Display
*dpy
, GLXFBConfig config
)
1721 XVisualInfo visualTemplate
;
1722 __GLcontextModes
* fbconfig
= (__GLcontextModes
*) config
;
1726 ** Get a list of all visuals, return if list is empty
1728 visualTemplate
.visualid
= fbconfig
->visualID
;
1729 return XGetVisualInfo(dpy
,VisualIDMask
,&visualTemplate
,&count
);
1734 ** GLX_SGI_swap_control
1736 static int __glXSwapIntervalSGI(int interval
)
1738 xGLXVendorPrivateReq
*req
;
1739 GLXContext gc
= __glXGetCurrentContext();
1741 CARD32
* interval_ptr
;
1745 return GLX_BAD_CONTEXT
;
1748 if ( interval
<= 0 ) {
1749 return GLX_BAD_VALUE
;
1752 #ifdef __DRI_SWAP_CONTROL
1753 if (gc
->driContext
) {
1754 __GLXscreenConfigs
* const psc
= GetGLXScreenConfigs( gc
->currentDpy
,
1756 __GLXDRIdrawable
*pdraw
= GetGLXDRIDrawable(gc
->currentDpy
,
1757 gc
->currentDrawable
,
1759 if (psc
->swapControl
!= NULL
&& pdraw
!= NULL
) {
1760 psc
->swapControl
->setSwapInterval(pdraw
->driDrawable
, interval
);
1764 return GLX_BAD_CONTEXT
;
1768 dpy
= gc
->currentDpy
;
1769 opcode
= __glXSetupForCommand(dpy
);
1774 /* Send the glXSwapIntervalSGI request */
1776 GetReqExtra(GLXVendorPrivate
,sizeof(CARD32
),req
);
1777 req
->reqType
= opcode
;
1778 req
->glxCode
= X_GLXVendorPrivate
;
1779 req
->vendorCode
= X_GLXvop_SwapIntervalSGI
;
1780 req
->contextTag
= gc
->currentContextTag
;
1782 interval_ptr
= (CARD32
*) (req
+ 1);
1783 *interval_ptr
= interval
;
1794 ** GLX_MESA_swap_control
1796 static int __glXSwapIntervalMESA(unsigned int interval
)
1798 #ifdef __DRI_SWAP_CONTROL
1799 GLXContext gc
= __glXGetCurrentContext();
1801 if ( interval
< 0 ) {
1802 return GLX_BAD_VALUE
;
1805 if (gc
!= NULL
&& gc
->driContext
) {
1806 __GLXscreenConfigs
* const psc
= GetGLXScreenConfigs( gc
->currentDpy
,
1809 if ( (psc
!= NULL
) && (psc
->driScreen
!= NULL
) ) {
1810 __GLXDRIdrawable
*pdraw
=
1811 GetGLXDRIDrawable(gc
->currentDpy
, gc
->currentDrawable
, NULL
);
1812 if (psc
->swapControl
!= NULL
&& pdraw
!= NULL
) {
1813 psc
->swapControl
->setSwapInterval(pdraw
->driDrawable
, interval
);
1822 return GLX_BAD_CONTEXT
;
1826 static int __glXGetSwapIntervalMESA(void)
1828 #ifdef __DRI_SWAP_CONTROL
1829 GLXContext gc
= __glXGetCurrentContext();
1831 if (gc
!= NULL
&& gc
->driContext
) {
1832 __GLXscreenConfigs
* const psc
= GetGLXScreenConfigs( gc
->currentDpy
,
1835 if ( (psc
!= NULL
) && (psc
->driScreen
!= NULL
) ) {
1836 __GLXDRIdrawable
*pdraw
=
1837 GetGLXDRIDrawable(gc
->currentDpy
, gc
->currentDrawable
, NULL
);
1838 if (psc
->swapControl
!= NULL
&& pdraw
!= NULL
) {
1839 return psc
->swapControl
->getSwapInterval(pdraw
->driDrawable
);
1850 ** GLX_MESA_swap_frame_usage
1853 static GLint
__glXBeginFrameTrackingMESA(Display
*dpy
, GLXDrawable drawable
)
1855 int status
= GLX_BAD_CONTEXT
;
1856 #ifdef __DRI_FRAME_TRACKING
1858 __GLXDRIdrawable
*pdraw
= GetGLXDRIDrawable(dpy
, drawable
, &screen
);
1859 __GLXscreenConfigs
* const psc
= GetGLXScreenConfigs(dpy
, screen
);
1861 if (pdraw
!= NULL
&& psc
->frameTracking
!= NULL
)
1862 status
= psc
->frameTracking
->frameTracking(pdraw
->driDrawable
, GL_TRUE
);
1871 static GLint
__glXEndFrameTrackingMESA(Display
*dpy
, GLXDrawable drawable
)
1873 int status
= GLX_BAD_CONTEXT
;
1874 #ifdef __DRI_FRAME_TRACKING
1876 __GLXDRIdrawable
*pdraw
= GetGLXDRIDrawable(dpy
, drawable
, & screen
);
1877 __GLXscreenConfigs
*psc
= GetGLXScreenConfigs(dpy
, screen
);
1879 if (pdraw
!= NULL
&& psc
->frameTracking
!= NULL
)
1880 status
= psc
->frameTracking
->frameTracking(pdraw
->driDrawable
,
1890 static GLint
__glXGetFrameUsageMESA(Display
*dpy
, GLXDrawable drawable
,
1893 int status
= GLX_BAD_CONTEXT
;
1894 #ifdef __DRI_FRAME_TRACKING
1896 __GLXDRIdrawable
* const pdraw
= GetGLXDRIDrawable(dpy
, drawable
, & screen
);
1897 __GLXscreenConfigs
* const psc
= GetGLXScreenConfigs(dpy
, screen
);
1899 if (pdraw
!= NULL
&& psc
->frameTracking
!= NULL
) {
1900 int64_t sbc
, missedFrames
;
1901 float lastMissedUsage
;
1903 status
= psc
->frameTracking
->queryFrameTracking(pdraw
->driDrawable
,
1918 static GLint
__glXQueryFrameTrackingMESA(Display
*dpy
, GLXDrawable drawable
,
1919 int64_t *sbc
, int64_t *missedFrames
,
1920 GLfloat
*lastMissedUsage
)
1922 int status
= GLX_BAD_CONTEXT
;
1923 #ifdef __DRI_FRAME_TRACKING
1925 __GLXDRIdrawable
*pdraw
= GetGLXDRIDrawable(dpy
, drawable
, & screen
);
1926 __GLXscreenConfigs
* const psc
= GetGLXScreenConfigs(dpy
, screen
);
1928 if (pdraw
!= NULL
&& psc
->frameTracking
!= NULL
) {
1931 status
= psc
->frameTracking
->queryFrameTracking(pdraw
->driDrawable
,
1933 lastMissedUsage
, &usage
);
1939 (void) missedFrames
;
1940 (void) lastMissedUsage
;
1947 ** GLX_SGI_video_sync
1949 static int __glXGetVideoSyncSGI(unsigned int *count
)
1951 /* FIXME: Looking at the GLX_SGI_video_sync spec in the extension registry,
1952 * FIXME: there should be a GLX encoding for this call. I can find no
1953 * FIXME: documentation for the GLX encoding.
1955 #ifdef __DRI_MEDIA_STREAM_COUNTER
1956 GLXContext gc
= __glXGetCurrentContext();
1959 if (gc
!= NULL
&& gc
->driContext
) {
1960 __GLXscreenConfigs
* const psc
= GetGLXScreenConfigs( gc
->currentDpy
,
1962 if ( psc
->msc
&& psc
->driScreen
) {
1963 __GLXDRIdrawable
*pdraw
=
1964 GetGLXDRIDrawable(gc
->currentDpy
, gc
->currentDrawable
, NULL
);
1968 ret
= (*psc
->msc
->getDrawableMSC
)(psc
->__driScreen
,
1969 pdraw
->driDrawable
, &temp
);
1970 *count
= (unsigned) temp
;
1972 return (ret
== 0) ? 0 : GLX_BAD_CONTEXT
;
1978 return GLX_BAD_CONTEXT
;
1981 static int __glXWaitVideoSyncSGI(int divisor
, int remainder
, unsigned int *count
)
1983 #ifdef __DRI_MEDIA_STREAM_COUNTER
1984 GLXContext gc
= __glXGetCurrentContext();
1986 if ( divisor
<= 0 || remainder
< 0 )
1987 return GLX_BAD_VALUE
;
1989 if (gc
!= NULL
&& gc
->driContext
) {
1990 __GLXscreenConfigs
* const psc
= GetGLXScreenConfigs( gc
->currentDpy
,
1992 if (psc
->msc
!= NULL
&& psc
->driScreen
) {
1993 __GLXDRIdrawable
*pdraw
=
1994 GetGLXDRIDrawable(gc
->currentDpy
, gc
->currentDrawable
, NULL
);
1999 ret
= (*psc
->msc
->waitForMSC
)(pdraw
->driDrawable
, 0,
2000 divisor
, remainder
, &msc
, &sbc
);
2001 *count
= (unsigned) msc
;
2002 return (ret
== 0) ? 0 : GLX_BAD_CONTEXT
;
2008 return GLX_BAD_CONTEXT
;
2013 ** GLX_SGIX_fbconfig
2014 ** Many of these functions are aliased to GLX 1.3 entry points in the
2015 ** GLX_functions table.
2018 PUBLIC
GLX_ALIAS(int, glXGetFBConfigAttribSGIX
,
2019 (Display
*dpy
, GLXFBConfigSGIX config
, int attribute
, int *value
),
2020 (dpy
, config
, attribute
, value
),
2021 glXGetFBConfigAttrib
)
2023 PUBLIC
GLX_ALIAS(GLXFBConfigSGIX
*, glXChooseFBConfigSGIX
,
2024 (Display
*dpy
, int screen
, int *attrib_list
, int *nelements
),
2025 (dpy
, screen
, attrib_list
, nelements
),
2028 PUBLIC
GLX_ALIAS(XVisualInfo
*, glXGetVisualFromFBConfigSGIX
,
2029 (Display
* dpy
, GLXFBConfigSGIX config
),
2031 glXGetVisualFromFBConfig
)
2033 PUBLIC GLXPixmap
glXCreateGLXPixmapWithConfigSGIX(Display
*dpy
,
2034 GLXFBConfigSGIX config
, Pixmap pixmap
)
2036 xGLXVendorPrivateWithReplyReq
*vpreq
;
2037 xGLXCreateGLXPixmapWithConfigSGIXReq
*req
;
2038 GLXPixmap xid
= None
;
2040 const __GLcontextModes
* const fbconfig
= (__GLcontextModes
*) config
;
2041 __GLXscreenConfigs
* psc
;
2044 if ( (dpy
== NULL
) || (config
== NULL
) ) {
2048 psc
= GetGLXScreenConfigs( dpy
, fbconfig
->screen
);
2050 && __glXExtensionBitIsEnabled( psc
, SGIX_fbconfig_bit
) ) {
2051 opcode
= __glXSetupForCommand(dpy
);
2056 /* Send the glXCreateGLXPixmapWithConfigSGIX request */
2058 GetReqExtra(GLXVendorPrivateWithReply
,
2059 sz_xGLXCreateGLXPixmapWithConfigSGIXReq
-sz_xGLXVendorPrivateWithReplyReq
,vpreq
);
2060 req
= (xGLXCreateGLXPixmapWithConfigSGIXReq
*)vpreq
;
2061 req
->reqType
= opcode
;
2062 req
->glxCode
= X_GLXVendorPrivateWithReply
;
2063 req
->vendorCode
= X_GLXvop_CreateGLXPixmapWithConfigSGIX
;
2064 req
->screen
= fbconfig
->screen
;
2065 req
->fbconfig
= fbconfig
->fbconfigID
;
2066 req
->pixmap
= pixmap
;
2067 req
->glxpixmap
= xid
= XAllocID(dpy
);
2075 PUBLIC GLXContext
glXCreateContextWithConfigSGIX(Display
*dpy
,
2076 GLXFBConfigSGIX config
, int renderType
,
2077 GLXContext shareList
, Bool allowDirect
)
2079 GLXContext gc
= NULL
;
2080 const __GLcontextModes
* const fbconfig
= (__GLcontextModes
*) config
;
2081 __GLXscreenConfigs
* psc
;
2084 if ( (dpy
== NULL
) || (config
== NULL
) ) {
2088 psc
= GetGLXScreenConfigs( dpy
, fbconfig
->screen
);
2090 && __glXExtensionBitIsEnabled( psc
, SGIX_fbconfig_bit
) ) {
2091 gc
= CreateContext( dpy
, NULL
, (__GLcontextModes
*) config
, shareList
,
2092 allowDirect
, None
, False
, renderType
);
2099 PUBLIC GLXFBConfigSGIX
glXGetFBConfigFromVisualSGIX(Display
*dpy
,
2102 __GLXdisplayPrivate
*priv
;
2103 __GLXscreenConfigs
*psc
;
2105 if ( (GetGLXPrivScreenConfig( dpy
, vis
->screen
, & priv
, & psc
) != Success
)
2106 && __glXExtensionBitIsEnabled( psc
, SGIX_fbconfig_bit
)
2107 && (psc
->configs
->fbconfigID
!= GLX_DONT_CARE
) ) {
2108 return (GLXFBConfigSGIX
) _gl_context_modes_find_visual( psc
->configs
,
2117 ** GLX_SGIX_swap_group
2119 static void __glXJoinSwapGroupSGIX(Display
*dpy
, GLXDrawable drawable
,
2129 ** GLX_SGIX_swap_barrier
2131 static void __glXBindSwapBarrierSGIX(Display
*dpy
, GLXDrawable drawable
,
2139 static Bool
__glXQueryMaxSwapBarriersSGIX(Display
*dpy
, int screen
, int *max
)
2149 ** GLX_OML_sync_control
2151 static Bool
__glXGetSyncValuesOML(Display
*dpy
, GLXDrawable drawable
,
2152 int64_t *ust
, int64_t *msc
, int64_t *sbc
)
2154 #if defined(__DRI_SWAP_BUFFER_COUNTER) && defined(__DRI_MEDIA_STREAM_COUNTER)
2155 __GLXdisplayPrivate
* const priv
= __glXInitialize(dpy
);
2157 if ( priv
!= NULL
) {
2159 __GLXDRIdrawable
*pdraw
= GetGLXDRIDrawable(dpy
, drawable
, &i
);
2160 __GLXscreenConfigs
* const psc
= &priv
->screenConfigs
[i
];
2162 assert( (pdraw
== NULL
) || (i
!= -1) );
2163 return ( (pdraw
&& psc
->sbc
&& psc
->msc
)
2164 && ((*psc
->msc
->getMSC
)(psc
->driScreen
, msc
) == 0)
2165 && ((*psc
->sbc
->getSBC
)(pdraw
->driDrawable
, sbc
) == 0)
2166 && (__glXGetUST(ust
) == 0) );
2178 #ifdef GLX_DIRECT_RENDERING
2180 __driGetMscRateOML(__DRIdrawable
*draw
,
2181 int32_t *numerator
, int32_t *denominator
, void *private)
2184 __GLXscreenConfigs
*psc
;
2185 XF86VidModeModeLine mode_line
;
2188 __GLXDRIdrawable
*glxDraw
= private;
2191 if (XF86VidModeQueryVersion(psc
->dpy
, &i
, &i
) &&
2192 XF86VidModeGetModeLine(psc
->dpy
, psc
->scr
, &dot_clock
, &mode_line
) ) {
2193 unsigned n
= dot_clock
* 1000;
2194 unsigned d
= mode_line
.vtotal
* mode_line
.htotal
;
2196 # define V_INTERLACE 0x010
2197 # define V_DBLSCAN 0x020
2199 if (mode_line
.flags
& V_INTERLACE
)
2201 else if (mode_line
.flags
& V_DBLSCAN
)
2204 /* The OML_sync_control spec requires that if the refresh rate is a
2205 * whole number, that the returned numerator be equal to the refresh
2206 * rate and the denominator be 1.
2214 static const unsigned f
[] = { 13, 11, 7, 5, 3, 2, 0 };
2216 /* This is a poor man's way to reduce a fraction. It's far from
2217 * perfect, but it will work well enough for this situation.
2220 for (i
= 0; f
[i
] != 0; i
++) {
2221 while (n
% f
[i
] == 0 && d
% f
[i
] == 0) {
2242 * Determine the refresh rate of the specified drawable and display.
2244 * \param dpy Display whose refresh rate is to be determined.
2245 * \param drawable Drawable whose refresh rate is to be determined.
2246 * \param numerator Numerator of the refresh rate.
2247 * \param demoninator Denominator of the refresh rate.
2248 * \return If the refresh rate for the specified display and drawable could
2249 * be calculated, True is returned. Otherwise False is returned.
2251 * \note This function is implemented entirely client-side. A lot of other
2252 * functionality is required to export GLX_OML_sync_control, so on
2253 * XFree86 this function can be called for direct-rendering contexts
2254 * when GLX_OML_sync_control appears in the client extension string.
2257 _X_HIDDEN GLboolean
__glXGetMscRateOML(Display
* dpy
, GLXDrawable drawable
,
2258 int32_t * numerator
,
2259 int32_t * denominator
)
2261 #if defined( GLX_DIRECT_RENDERING ) && defined( XF86VIDMODE )
2262 __GLXDRIdrawable
*draw
= GetGLXDRIDrawable(dpy
, drawable
, NULL
);
2267 return __driGetMscRateOML(draw
->driDrawable
, numerator
, denominator
, draw
);
2278 static int64_t __glXSwapBuffersMscOML(Display
*dpy
, GLXDrawable drawable
,
2279 int64_t target_msc
, int64_t divisor
,
2282 #ifdef __DRI_SWAP_BUFFER_COUNTER
2284 __GLXDRIdrawable
*pdraw
= GetGLXDRIDrawable(dpy
, drawable
, &screen
);
2285 __GLXscreenConfigs
* const psc
= GetGLXScreenConfigs( dpy
, screen
);
2287 /* The OML_sync_control spec says these should "generate a GLX_BAD_VALUE
2288 * error", but it also says "It [glXSwapBuffersMscOML] will return a value
2289 * of -1 if the function failed because of errors detected in the input
2292 if ( divisor
< 0 || remainder
< 0 || target_msc
< 0 )
2294 if ( divisor
> 0 && remainder
>= divisor
)
2297 if (pdraw
!= NULL
&& psc
->counters
!= NULL
)
2298 return (*psc
->sbc
->swapBuffersMSC
)(pdraw
->driDrawable
, target_msc
,
2299 divisor
, remainder
);
2312 static Bool
__glXWaitForMscOML(Display
* dpy
, GLXDrawable drawable
,
2313 int64_t target_msc
, int64_t divisor
,
2314 int64_t remainder
, int64_t *ust
,
2315 int64_t *msc
, int64_t *sbc
)
2317 #ifdef __DRI_MEDIA_STREAM_COUNTER
2319 __GLXDRIdrawable
*pdraw
= GetGLXDRIDrawable(dpy
, drawable
, &screen
);
2320 __GLXscreenConfigs
* const psc
= GetGLXScreenConfigs( dpy
, screen
);
2323 /* The OML_sync_control spec says these should "generate a GLX_BAD_VALUE
2324 * error", but the return type in the spec is Bool.
2326 if ( divisor
< 0 || remainder
< 0 || target_msc
< 0 )
2328 if ( divisor
> 0 && remainder
>= divisor
)
2331 if (pdraw
!= NULL
&& psc
->msc
!= NULL
) {
2332 ret
= (*psc
->msc
->waitForMSC
)(pdraw
->driDrawable
, target_msc
,
2333 divisor
, remainder
, msc
, sbc
);
2335 /* __glXGetUST returns zero on success and non-zero on failure.
2336 * This function returns True on success and False on failure.
2338 return ( (ret
== 0) && (__glXGetUST( ust
) == 0) );
2354 static Bool
__glXWaitForSbcOML(Display
* dpy
, GLXDrawable drawable
,
2355 int64_t target_sbc
, int64_t *ust
,
2356 int64_t *msc
, int64_t *sbc
)
2358 #ifdef __DRI_SWAP_BUFFER_COUNTER
2360 __GLXDRIdrawable
*pdraw
= GetGLXDRIDrawable(dpy
, drawable
, &screen
);
2361 __GLXscreenConfigs
* const psc
= GetGLXScreenConfigs( dpy
, screen
);
2364 /* The OML_sync_control spec says this should "generate a GLX_BAD_VALUE
2365 * error", but the return type in the spec is Bool.
2367 if ( target_sbc
< 0 )
2370 if (pdraw
!= NULL
&& psc
->sbc
!= NULL
) {
2371 ret
= (*psc
->sbc
->waitForSBC
)(pdraw
->driDrawable
, target_sbc
, msc
, sbc
);
2373 /* __glXGetUST returns zero on success and non-zero on failure.
2374 * This function returns True on success and False on failure.
2376 return( (ret
== 0) && (__glXGetUST( ust
) == 0) );
2391 * GLX_MESA_allocate_memory
2395 PUBLIC
void *glXAllocateMemoryMESA(Display
*dpy
, int scrn
,
2396 size_t size
, float readFreq
,
2397 float writeFreq
, float priority
)
2399 #ifdef __DRI_ALLOCATE
2400 __GLXscreenConfigs
* const psc
= GetGLXScreenConfigs( dpy
, scrn
);
2402 if (psc
&& psc
->allocate
)
2403 return (*psc
->allocate
->allocateMemory
)(psc
->__driScreen
, size
,
2404 readFreq
, writeFreq
, priority
);
2413 #endif /* GLX_DIRECT_RENDERING */
2419 PUBLIC
void glXFreeMemoryMESA(Display
*dpy
, int scrn
, void *pointer
)
2421 #ifdef __DRI_ALLOCATE
2422 __GLXscreenConfigs
* const psc
= GetGLXScreenConfigs( dpy
, scrn
);
2424 if (psc
&& psc
->allocate
)
2425 (*psc
->allocate
->freeMemory
)(psc
->__driScreen
, pointer
);
2431 #endif /* GLX_DIRECT_RENDERING */
2435 PUBLIC GLuint
glXGetMemoryOffsetMESA( Display
*dpy
, int scrn
,
2436 const void *pointer
)
2438 #ifdef __DRI_ALLOCATE
2439 __GLXscreenConfigs
* const psc
= GetGLXScreenConfigs( dpy
, scrn
);
2441 if (psc
&& psc
->allocate
)
2442 return (*psc
->allocate
->memoryOffset
)(psc
->__driScreen
, pointer
);
2448 #endif /* GLX_DIRECT_RENDERING */
2456 * Mesa extension stubs. These will help reduce portability problems.
2461 * Release all buffers associated with the specified GLX drawable.
2464 * This function was intended for stand-alone Mesa. The issue there is that
2465 * the library doesn't get any notification when a window is closed. In
2466 * DRI there is a similar but slightly different issue. When GLX 1.3 is
2467 * supported, there are 3 different functions to destroy a drawable. It
2468 * should be possible to create GLX protocol (or have it determine which
2469 * protocol to use based on the type of the drawable) to have one function
2470 * do the work of 3. For the direct-rendering case, this function could
2471 * just call the driver's \c __DRIdrawableRec::destroyDrawable function.
2472 * This would reduce the frequency with which \c __driGarbageCollectDrawables
2473 * would need to be used. This really should be done as part of the new DRI
2476 * \sa http://oss.sgi.com/projects/ogl-sample/registry/MESA/release_buffers.txt
2477 * __driGarbageCollectDrawables
2478 * glXDestroyGLXPixmap
2479 * glXDestroyPbuffer glXDestroyPixmap glXDestroyWindow
2480 * glXDestroyGLXPbufferSGIX glXDestroyGLXVideoSourceSGIX
2482 static Bool
__glXReleaseBuffersMESA( Display
*dpy
, GLXDrawable d
)
2490 PUBLIC GLXPixmap
glXCreateGLXPixmapMESA( Display
*dpy
, XVisualInfo
*visual
,
2491 Pixmap pixmap
, Colormap cmap
)
2503 * GLX_MESA_copy_sub_buffer
2505 #define X_GLXvop_CopySubBufferMESA 5154 /* temporary */
2506 static void __glXCopySubBufferMESA(Display
*dpy
, GLXDrawable drawable
,
2507 int x
, int y
, int width
, int height
)
2509 xGLXVendorPrivateReq
*req
;
2512 CARD32
*drawable_ptr
;
2513 INT32
*x_ptr
, *y_ptr
, *w_ptr
, *h_ptr
;
2516 #ifdef __DRI_COPY_SUB_BUFFER
2518 __GLXDRIdrawable
*pdraw
= GetGLXDRIDrawable(dpy
, drawable
, &screen
);
2519 if ( pdraw
!= NULL
) {
2520 __GLXscreenConfigs
* const psc
= GetGLXScreenConfigs(dpy
, screen
);
2521 if (psc
->driScreen
->copySubBuffer
!= NULL
) {
2523 (*psc
->driScreen
->copySubBuffer
)(pdraw
, x
, y
, width
, height
);
2530 opcode
= __glXSetupForCommand(dpy
);
2535 ** The calling thread may or may not have a current context. If it
2536 ** does, send the context tag so the server can do a flush.
2538 gc
= __glXGetCurrentContext();
2539 if ((gc
!= NULL
) && (dpy
== gc
->currentDpy
) &&
2540 ((drawable
== gc
->currentDrawable
) ||
2541 (drawable
== gc
->currentReadable
)) ) {
2542 tag
= gc
->currentContextTag
;
2548 GetReqExtra(GLXVendorPrivate
, sizeof(CARD32
) + sizeof(INT32
) * 4,req
);
2549 req
->reqType
= opcode
;
2550 req
->glxCode
= X_GLXVendorPrivate
;
2551 req
->vendorCode
= X_GLXvop_CopySubBufferMESA
;
2552 req
->contextTag
= tag
;
2554 drawable_ptr
= (CARD32
*) (req
+ 1);
2555 x_ptr
= (INT32
*) (drawable_ptr
+ 1);
2556 y_ptr
= (INT32
*) (drawable_ptr
+ 2);
2557 w_ptr
= (INT32
*) (drawable_ptr
+ 3);
2558 h_ptr
= (INT32
*) (drawable_ptr
+ 4);
2560 *drawable_ptr
= drawable
;
2572 * GLX_EXT_texture_from_pixmap
2575 static void __glXBindTexImageEXT(Display
*dpy
,
2576 GLXDrawable drawable
,
2578 const int *attrib_list
)
2580 xGLXVendorPrivateReq
*req
;
2581 GLXContext gc
= __glXGetCurrentContext();
2582 CARD32
*drawable_ptr
;
2584 CARD32
*num_attrib_ptr
;
2594 while (attrib_list
[i
* 2] != None
)
2598 #ifdef GLX_DIRECT_RENDERING
2599 if (gc
->driContext
) {
2600 __GLXDRIdrawable
*pdraw
= GetGLXDRIDrawable(dpy
, drawable
, NULL
);
2603 (*pdraw
->psc
->texBuffer
->setTexBuffer
)(gc
->__driContext
,
2604 pdraw
->textureTarget
,
2605 pdraw
->driDrawable
);
2611 opcode
= __glXSetupForCommand(dpy
);
2616 GetReqExtra(GLXVendorPrivate
, 12 + 8 * i
,req
);
2617 req
->reqType
= opcode
;
2618 req
->glxCode
= X_GLXVendorPrivate
;
2619 req
->vendorCode
= X_GLXvop_BindTexImageEXT
;
2620 req
->contextTag
= gc
->currentContextTag
;
2622 drawable_ptr
= (CARD32
*) (req
+ 1);
2623 buffer_ptr
= (INT32
*) (drawable_ptr
+ 1);
2624 num_attrib_ptr
= (CARD32
*) (buffer_ptr
+ 1);
2625 attrib_ptr
= (CARD32
*) (num_attrib_ptr
+ 1);
2627 *drawable_ptr
= drawable
;
2628 *buffer_ptr
= buffer
;
2629 *num_attrib_ptr
= (CARD32
) i
;
2633 while (attrib_list
[i
* 2] != None
)
2635 *attrib_ptr
++ = (CARD32
) attrib_list
[i
* 2 + 0];
2636 *attrib_ptr
++ = (CARD32
) attrib_list
[i
* 2 + 1];
2645 static void __glXReleaseTexImageEXT(Display
*dpy
,
2646 GLXDrawable drawable
,
2649 xGLXVendorPrivateReq
*req
;
2650 GLXContext gc
= __glXGetCurrentContext();
2651 CARD32
*drawable_ptr
;
2658 #ifdef GLX_DIRECT_RENDERING
2663 opcode
= __glXSetupForCommand(dpy
);
2668 GetReqExtra(GLXVendorPrivate
, sizeof(CARD32
)+sizeof(INT32
),req
);
2669 req
->reqType
= opcode
;
2670 req
->glxCode
= X_GLXVendorPrivate
;
2671 req
->vendorCode
= X_GLXvop_ReleaseTexImageEXT
;
2672 req
->contextTag
= gc
->currentContextTag
;
2674 drawable_ptr
= (CARD32
*) (req
+ 1);
2675 buffer_ptr
= (INT32
*) (drawable_ptr
+ 1);
2677 *drawable_ptr
= drawable
;
2678 *buffer_ptr
= buffer
;
2686 * \c strdup is actually not a standard ANSI C or POSIX routine.
2687 * Irix will not define it if ANSI mode is in effect.
2692 __glXstrdup(const char *str
)
2695 copy
= (char *) Xmalloc(strlen(str
) + 1);
2703 ** glXGetProcAddress support
2706 struct name_address_pair
{
2711 #define GLX_FUNCTION(f) { # f, (GLvoid *) f }
2712 #define GLX_FUNCTION2(n,f) { # n, (GLvoid *) f }
2714 static const struct name_address_pair GLX_functions
[] = {
2715 /*** GLX_VERSION_1_0 ***/
2716 GLX_FUNCTION( glXChooseVisual
),
2717 GLX_FUNCTION( glXCopyContext
),
2718 GLX_FUNCTION( glXCreateContext
),
2719 GLX_FUNCTION( glXCreateGLXPixmap
),
2720 GLX_FUNCTION( glXDestroyContext
),
2721 GLX_FUNCTION( glXDestroyGLXPixmap
),
2722 GLX_FUNCTION( glXGetConfig
),
2723 GLX_FUNCTION( glXGetCurrentContext
),
2724 GLX_FUNCTION( glXGetCurrentDrawable
),
2725 GLX_FUNCTION( glXIsDirect
),
2726 GLX_FUNCTION( glXMakeCurrent
),
2727 GLX_FUNCTION( glXQueryExtension
),
2728 GLX_FUNCTION( glXQueryVersion
),
2729 GLX_FUNCTION( glXSwapBuffers
),
2730 GLX_FUNCTION( glXUseXFont
),
2731 GLX_FUNCTION( glXWaitGL
),
2732 GLX_FUNCTION( glXWaitX
),
2734 /*** GLX_VERSION_1_1 ***/
2735 GLX_FUNCTION( glXGetClientString
),
2736 GLX_FUNCTION( glXQueryExtensionsString
),
2737 GLX_FUNCTION( glXQueryServerString
),
2739 /*** GLX_VERSION_1_2 ***/
2740 GLX_FUNCTION( glXGetCurrentDisplay
),
2742 /*** GLX_VERSION_1_3 ***/
2743 GLX_FUNCTION( glXChooseFBConfig
),
2744 GLX_FUNCTION( glXCreateNewContext
),
2745 GLX_FUNCTION( glXCreatePbuffer
),
2746 GLX_FUNCTION( glXCreatePixmap
),
2747 GLX_FUNCTION( glXCreateWindow
),
2748 GLX_FUNCTION( glXDestroyPbuffer
),
2749 GLX_FUNCTION( glXDestroyPixmap
),
2750 GLX_FUNCTION( glXDestroyWindow
),
2751 GLX_FUNCTION( glXGetCurrentReadDrawable
),
2752 GLX_FUNCTION( glXGetFBConfigAttrib
),
2753 GLX_FUNCTION( glXGetFBConfigs
),
2754 GLX_FUNCTION( glXGetSelectedEvent
),
2755 GLX_FUNCTION( glXGetVisualFromFBConfig
),
2756 GLX_FUNCTION( glXMakeContextCurrent
),
2757 GLX_FUNCTION( glXQueryContext
),
2758 GLX_FUNCTION( glXQueryDrawable
),
2759 GLX_FUNCTION( glXSelectEvent
),
2761 /*** GLX_SGI_swap_control ***/
2762 GLX_FUNCTION2( glXSwapIntervalSGI
, __glXSwapIntervalSGI
),
2764 /*** GLX_SGI_video_sync ***/
2765 GLX_FUNCTION2( glXGetVideoSyncSGI
, __glXGetVideoSyncSGI
),
2766 GLX_FUNCTION2( glXWaitVideoSyncSGI
, __glXWaitVideoSyncSGI
),
2768 /*** GLX_SGI_make_current_read ***/
2769 GLX_FUNCTION2( glXMakeCurrentReadSGI
, glXMakeContextCurrent
),
2770 GLX_FUNCTION2( glXGetCurrentReadDrawableSGI
, glXGetCurrentReadDrawable
),
2772 /*** GLX_EXT_import_context ***/
2773 GLX_FUNCTION( glXFreeContextEXT
),
2774 GLX_FUNCTION( glXGetContextIDEXT
),
2775 GLX_FUNCTION2( glXGetCurrentDisplayEXT
, glXGetCurrentDisplay
),
2776 GLX_FUNCTION( glXImportContextEXT
),
2777 GLX_FUNCTION2( glXQueryContextInfoEXT
, glXQueryContext
),
2779 /*** GLX_SGIX_fbconfig ***/
2780 GLX_FUNCTION2( glXGetFBConfigAttribSGIX
, glXGetFBConfigAttrib
),
2781 GLX_FUNCTION2( glXChooseFBConfigSGIX
, glXChooseFBConfig
),
2782 GLX_FUNCTION( glXCreateGLXPixmapWithConfigSGIX
),
2783 GLX_FUNCTION( glXCreateContextWithConfigSGIX
),
2784 GLX_FUNCTION2( glXGetVisualFromFBConfigSGIX
, glXGetVisualFromFBConfig
),
2785 GLX_FUNCTION( glXGetFBConfigFromVisualSGIX
),
2787 /*** GLX_SGIX_pbuffer ***/
2788 GLX_FUNCTION( glXCreateGLXPbufferSGIX
),
2789 GLX_FUNCTION( glXDestroyGLXPbufferSGIX
),
2790 GLX_FUNCTION( glXQueryGLXPbufferSGIX
),
2791 GLX_FUNCTION( glXSelectEventSGIX
),
2792 GLX_FUNCTION( glXGetSelectedEventSGIX
),
2794 /*** GLX_SGIX_swap_group ***/
2795 GLX_FUNCTION2( glXJoinSwapGroupSGIX
, __glXJoinSwapGroupSGIX
),
2797 /*** GLX_SGIX_swap_barrier ***/
2798 GLX_FUNCTION2( glXBindSwapBarrierSGIX
, __glXBindSwapBarrierSGIX
),
2799 GLX_FUNCTION2( glXQueryMaxSwapBarriersSGIX
, __glXQueryMaxSwapBarriersSGIX
),
2801 /*** GLX_MESA_allocate_memory ***/
2802 GLX_FUNCTION( glXAllocateMemoryMESA
),
2803 GLX_FUNCTION( glXFreeMemoryMESA
),
2804 GLX_FUNCTION( glXGetMemoryOffsetMESA
),
2806 /*** GLX_MESA_copy_sub_buffer ***/
2807 GLX_FUNCTION2( glXCopySubBufferMESA
, __glXCopySubBufferMESA
),
2809 /*** GLX_MESA_pixmap_colormap ***/
2810 GLX_FUNCTION( glXCreateGLXPixmapMESA
),
2812 /*** GLX_MESA_release_buffers ***/
2813 GLX_FUNCTION2( glXReleaseBuffersMESA
, __glXReleaseBuffersMESA
),
2815 /*** GLX_MESA_swap_control ***/
2816 GLX_FUNCTION2( glXSwapIntervalMESA
, __glXSwapIntervalMESA
),
2817 GLX_FUNCTION2( glXGetSwapIntervalMESA
, __glXGetSwapIntervalMESA
),
2819 /*** GLX_MESA_swap_frame_usage ***/
2820 GLX_FUNCTION2( glXBeginFrameTrackingMESA
, __glXBeginFrameTrackingMESA
),
2821 GLX_FUNCTION2( glXEndFrameTrackingMESA
, __glXEndFrameTrackingMESA
),
2822 GLX_FUNCTION2( glXGetFrameUsageMESA
, __glXGetFrameUsageMESA
),
2823 GLX_FUNCTION2( glXQueryFrameTrackingMESA
, __glXQueryFrameTrackingMESA
),
2825 /*** GLX_ARB_get_proc_address ***/
2826 GLX_FUNCTION( glXGetProcAddressARB
),
2829 GLX_FUNCTION2( glXGetProcAddress
, glXGetProcAddressARB
),
2831 /*** GLX_OML_sync_control ***/
2832 GLX_FUNCTION2( glXWaitForSbcOML
, __glXWaitForSbcOML
),
2833 GLX_FUNCTION2( glXWaitForMscOML
, __glXWaitForMscOML
),
2834 GLX_FUNCTION2( glXSwapBuffersMscOML
, __glXSwapBuffersMscOML
),
2835 GLX_FUNCTION2( glXGetMscRateOML
, __glXGetMscRateOML
),
2836 GLX_FUNCTION2( glXGetSyncValuesOML
, __glXGetSyncValuesOML
),
2838 /*** GLX_EXT_texture_from_pixmap ***/
2839 GLX_FUNCTION2( glXBindTexImageEXT
, __glXBindTexImageEXT
),
2840 GLX_FUNCTION2( glXReleaseTexImageEXT
, __glXReleaseTexImageEXT
),
2842 #ifdef GLX_DIRECT_RENDERING
2843 /*** DRI configuration ***/
2844 GLX_FUNCTION( glXGetScreenDriver
),
2845 GLX_FUNCTION( glXGetDriverConfig
),
2848 { NULL
, NULL
} /* end of list */
2852 static const GLvoid
*
2853 get_glx_proc_address(const char *funcName
)
2857 /* try static functions */
2858 for (i
= 0; GLX_functions
[i
].Name
; i
++) {
2859 if (strcmp(GLX_functions
[i
].Name
, funcName
) == 0)
2860 return GLX_functions
[i
].Address
;
2868 * Get the address of a named GL function. This is the pre-GLX 1.4 name for
2869 * \c glXGetProcAddress.
2871 * \param procName Name of a GL or GLX function.
2872 * \returns A pointer to the named function
2874 * \sa glXGetProcAddress
2876 PUBLIC
void (*glXGetProcAddressARB(const GLubyte
*procName
))( void )
2878 typedef void (*gl_function
)( void );
2882 /* Search the table of GLX and internal functions first. If that
2883 * fails and the supplied name could be a valid core GL name, try
2884 * searching the core GL function table. This check is done to prevent
2885 * DRI based drivers from searching the core GL function table for
2886 * internal API functions.
2889 f
= (gl_function
) get_glx_proc_address((const char *) procName
);
2890 if ( (f
== NULL
) && (procName
[0] == 'g') && (procName
[1] == 'l')
2891 && (procName
[2] != 'X') ) {
2892 f
= (gl_function
) _glapi_get_proc_address((const char *) procName
);
2899 * Get the address of a named GL function. This is the GLX 1.4 name for
2900 * \c glXGetProcAddressARB.
2902 * \param procName Name of a GL or GLX function.
2903 * \returns A pointer to the named function
2905 * \sa glXGetProcAddressARB
2907 PUBLIC
void (*glXGetProcAddress(const GLubyte
*procName
))( void )
2908 #if defined(__GNUC__) && !defined(GLX_ALIAS_UNSUPPORTED)
2909 __attribute__ ((alias ("glXGetProcAddressARB")));
2912 return glXGetProcAddressARB(procName
);
2914 #endif /* __GNUC__ */
2917 #ifdef GLX_DIRECT_RENDERING
2919 * Get the unadjusted system time (UST). Currently, the UST is measured in
2920 * microseconds since Epoc. The actual resolution of the UST may vary from
2921 * system to system, and the units may vary from release to release.
2922 * Drivers should not call this function directly. They should instead use
2923 * \c glXGetProcAddress to obtain a pointer to the function.
2925 * \param ust Location to store the 64-bit UST
2926 * \returns Zero on success or a negative errno value on failure.
2928 * \sa glXGetProcAddress, PFNGLXGETUSTPROC
2930 * \since Internal API version 20030317.
2932 _X_HIDDEN
int __glXGetUST( int64_t * ust
)
2936 if ( ust
== NULL
) {
2940 if ( gettimeofday( & tv
, NULL
) == 0 ) {
2941 ust
[0] = (tv
.tv_sec
* 1000000) + tv
.tv_usec
;
2947 #endif /* GLX_DIRECT_RENDERING */