1 /* $XFree86: xc/lib/GL/glx/glxext.c,v 1.22 2003/12/08 17:35:28 dawes Exp $ */
4 ** License Applicability. Except to the extent portions of this file are
5 ** made subject to an alternative license as permitted in the SGI Free
6 ** Software License B, Version 1.1 (the "License"), the contents of this
7 ** file are subject only to the provisions of the License. You may not use
8 ** this file except in compliance with the License. You may obtain a copy
9 ** of the License at Silicon Graphics, Inc., attn: Legal Services, 1600
10 ** Amphitheatre Parkway, Mountain View, CA 94043-1351, or at:
12 ** http://oss.sgi.com/projects/FreeB
14 ** Note that, as provided in the License, the Software is distributed on an
15 ** "AS IS" basis, with ALL EXPRESS AND IMPLIED WARRANTIES AND CONDITIONS
16 ** DISCLAIMED, INCLUDING, WITHOUT LIMITATION, ANY IMPLIED WARRANTIES AND
17 ** CONDITIONS OF MERCHANTABILITY, SATISFACTORY QUALITY, FITNESS FOR A
18 ** PARTICULAR PURPOSE, AND NON-INFRINGEMENT.
20 ** Original Code. The Original Code is: OpenGL Sample Implementation,
21 ** Version 1.2.1, released January 26, 2000, developed by Silicon Graphics,
22 ** Inc. The Original Code is Copyright (c) 1991-2000 Silicon Graphics, Inc.
23 ** Copyright in any portions created by third parties is as indicated
24 ** elsewhere herein. All Rights Reserved.
26 ** Additional Notice Provisions: The application programming interfaces
27 ** established by SGI in conjunction with the Original Code are The
28 ** OpenGL(R) Graphics System: A Specification (Version 1.2.1), released
29 ** April 1, 1999; The OpenGL(R) Graphics System Utility Library (Version
30 ** 1.3), released November 4, 1998; and OpenGL(R) Graphics with the X
31 ** Window System(R) (Version 1.3), released October 19, 1998. This software
32 ** was created using the OpenGL(R) version 1.2.1 Sample Implementation
33 ** published by SGI, but has not been independently verified as being
34 ** compliant with the OpenGL(R) version 1.2.1 Specification.
40 * GLX protocol interface boot-strap code.
42 * Direct rendering support added by Precision Insight, Inc.
44 * \author Kevin E. Martin <kevin@precisioninsight.com>
47 #include "packrender.h"
52 #include "indirect_init.h"
57 #include "glxextensions.h"
58 #include "glcontextmodes.h"
60 #ifdef GLX_DIRECT_RENDERING
71 void __glXDumpDrawBuffer(__GLXcontext
*ctx
);
76 * This is where our dispatch table's bounds are.
77 * And the static mesa_init is taken directly from
78 * Mesa's 'sparc.c' initializer.
80 * We need something like this here, because this version
81 * of openGL/glx never initializes a Mesa context, and so
82 * the address of the dispatch table pointer never gets stuffed
83 * into the dispatch jump table otherwise.
85 * It matters only on SPARC, and only if you are using assembler
86 * code instead of C-code indirect dispatch.
90 extern unsigned int _mesa_sparc_glapi_begin
;
91 extern unsigned int _mesa_sparc_glapi_end
;
92 extern void __glapi_sparc_icache_flush(unsigned int *);
93 static void _glx_mesa_init_sparc_glapi_relocs(void);
94 static int _mesa_sparc_needs_init
= 1;
95 #define INIT_MESA_SPARC { \
96 if(_mesa_sparc_needs_init) { \
97 _glx_mesa_init_sparc_glapi_relocs(); \
98 _mesa_sparc_needs_init = 0; \
102 #define INIT_MESA_SPARC
105 static Bool
MakeContextCurrent(Display
*dpy
, GLXDrawable draw
,
106 GLXDrawable read
, GLXContext gc
);
109 ** We setup some dummy structures here so that the API can be used
110 ** even if no context is current.
113 static GLubyte dummyBuffer
[__GLX_BUFFER_LIMIT_SIZE
];
116 ** Dummy context used by small commands when there is no current context.
118 ** gl and glx entry points are designed to operate as nop's when using
119 ** the dummy context structure.
121 static __GLXcontext dummyContext
= {
125 &dummyBuffer
[__GLX_BUFFER_LIMIT_SIZE
],
131 ** All indirect rendering contexts will share the same indirect dispatch table.
133 static __GLapi
*IndirectAPI
= NULL
;
137 * Current context management and locking
140 #if defined(GLX_DIRECT_RENDERING) && defined(XTHREADS)
143 static GLboolean TSDinitialized
= GL_FALSE
;
144 static xthread_key_t ContextTSD
;
146 __GLXcontext
*__glXGetCurrentContext(void)
148 if (!TSDinitialized
) {
149 xthread_key_create(&ContextTSD
, NULL
);
150 TSDinitialized
= GL_TRUE
;
151 return &dummyContext
;
155 xthread_get_specific(ContextTSD
, &p
);
157 return &dummyContext
;
159 return (__GLXcontext
*) p
;
163 void __glXSetCurrentContext(__GLXcontext
*c
)
165 if (!TSDinitialized
) {
166 xthread_key_create(&ContextTSD
, NULL
);
167 TSDinitialized
= GL_TRUE
;
169 xthread_set_specific(ContextTSD
, c
);
173 /* Used by the __glXLock() and __glXUnlock() macros */
174 xmutex_rec __glXmutex
;
178 /* not thread safe */
179 __GLXcontext
*__glXcurrentContext
= &dummyContext
;
185 ** You can set this cell to 1 to force the gl drawing stuff to be
186 ** one command per packet
191 ** forward prototype declarations
193 int __glXCloseDisplay(Display
*dpy
, XExtCodes
*codes
);
195 static GLboolean
FillInVisuals( __GLXscreenConfigs
* psc
);
197 /************************************************************************/
199 /* Extension required boiler plate */
201 static char *__glXExtensionName
= GLX_EXTENSION_NAME
;
202 XExtensionInfo
*__glXExtensionInfo
= NULL
;
204 static /* const */ char *error_list
[] = {
206 "GLXBadContextState",
210 "GLXBadCurrentWindow",
211 "GLXBadRenderRequest",
212 "GLXBadLargeRequest",
213 "GLXUnsupportedPrivateRequest",
216 int __glXCloseDisplay(Display
*dpy
, XExtCodes
*codes
)
220 gc
= __glXGetCurrentContext();
221 if (dpy
== gc
->currentDpy
) {
222 __glXSetCurrentContext(&dummyContext
);
223 #ifdef GLX_DIRECT_RENDERING
224 _glapi_set_dispatch(NULL
); /* no-op functions */
226 __glXFreeContext(gc
);
229 return XextRemoveDisplay(__glXExtensionInfo
, dpy
);
233 static XEXT_GENERATE_ERROR_STRING(__glXErrorString
, __glXExtensionName
,
234 __GLX_NUMBER_ERRORS
, error_list
)
236 static /* const */ XExtensionHooks __glXExtensionHooks
= {
237 NULL
, /* create_gc */
241 NULL
, /* create_font */
242 NULL
, /* free_font */
243 __glXCloseDisplay
, /* close_display */
244 NULL
, /* wire_to_event */
245 NULL
, /* event_to_wire */
247 __glXErrorString
, /* error_string */
251 XEXT_GENERATE_FIND_DISPLAY(__glXFindDisplay
, __glXExtensionInfo
,
252 __glXExtensionName
, &__glXExtensionHooks
,
253 __GLX_NUMBER_EVENTS
, NULL
)
255 /************************************************************************/
258 ** Free the per screen configs data as well as the array of
259 ** __glXScreenConfigs.
261 static void FreeScreenConfigs(__GLXdisplayPrivate
*priv
)
263 __GLXscreenConfigs
*psc
;
266 /* Free screen configuration information */
267 psc
= priv
->screenConfigs
;
268 screens
= ScreenCount(priv
->dpy
);
269 for (i
= 0; i
< screens
; i
++, psc
++) {
271 _gl_context_modes_destroy( psc
->configs
);
272 if(psc
->effectiveGLXexts
)
273 Xfree(psc
->effectiveGLXexts
);
275 if ( psc
->old_configs
!= NULL
) {
276 Xfree( psc
->old_configs
);
277 psc
->old_configs
= NULL
;
278 psc
->numOldConfigs
= 0;
281 psc
->configs
= NULL
; /* NOTE: just for paranoia */
284 #ifdef GLX_DIRECT_RENDERING
285 /* Free the direct rendering per screen data */
286 if (psc
->driScreen
.private)
287 (*psc
->driScreen
.destroyScreen
)(priv
->dpy
, i
,
288 psc
->driScreen
.private);
289 psc
->driScreen
.private = NULL
;
292 XFree((char*) priv
->screenConfigs
);
296 ** Release the private memory referred to in a display private
297 ** structure. The caller will free the extension structure.
299 static int __glXFreeDisplayPrivate(XExtData
*extension
)
301 __GLXdisplayPrivate
*priv
;
303 priv
= (__GLXdisplayPrivate
*) extension
->private_data
;
304 FreeScreenConfigs(priv
);
305 if(priv
->serverGLXvendor
) {
306 Xfree((char*)priv
->serverGLXvendor
);
307 priv
->serverGLXvendor
= 0x0; /* to protect against double free's */
309 if(priv
->serverGLXversion
) {
310 Xfree((char*)priv
->serverGLXversion
);
311 priv
->serverGLXversion
= 0x0; /* to protect against double free's */
314 #if 0 /* GLX_DIRECT_RENDERING */
315 /* Free the direct rendering per display data */
316 if (priv
->driDisplay
.private)
317 (*priv
->driDisplay
.destroyDisplay
)(priv
->dpy
,
318 priv
->driDisplay
.private);
319 priv
->driDisplay
.private = NULL
;
322 #ifdef GLX_DIRECT_RENDERING
323 XFree(priv
->driDisplay
.createScreen
);
330 /************************************************************************/
333 ** Query the version of the GLX extension. This procedure works even if
334 ** the client extension is not completely set up.
336 static Bool
QueryVersion(Display
*dpy
, int opcode
, int *major
, int *minor
)
338 xGLXQueryVersionReq
*req
;
339 xGLXQueryVersionReply reply
;
341 /* Send the glXQueryVersion request */
343 GetReq(GLXQueryVersion
,req
);
344 req
->reqType
= opcode
;
345 req
->glxCode
= X_GLXQueryVersion
;
346 req
->majorVersion
= GLX_MAJOR_VERSION
;
347 req
->minorVersion
= GLX_MINOR_VERSION
;
348 _XReply(dpy
, (xReply
*) &reply
, 0, False
);
352 if (reply
.majorVersion
!= GLX_MAJOR_VERSION
) {
354 ** The server does not support the same major release as this
359 *major
= reply
.majorVersion
;
360 *minor
= min(reply
.minorVersion
, GLX_MINOR_VERSION
);
366 * Determine if a \c __GLcontextModes structure has the right mojo to be
367 * converted to a \c __GLXvisualConfig to be sent to an "old" style DRI
370 #define MODE_HAS_MOJO(m) \
371 ((m)->visualID != GLX_DONT_CARE) \
372 && ((m)->sampleBuffers == 0) \
373 && ((m)->samples == 0) \
374 && (((m)->drawableType & GLX_WINDOW_BIT) != 0) \
375 && (((m)->xRenderable == GL_TRUE) \
376 || ((m)->xRenderable == GLX_DONT_CARE))
380 * Convert the FBConfigs associated with a screen into an array of
381 * \c __GLXvisualConfig structures. These structures are passed into DRI
382 * drivers that use the "old" interface. The old-style drivers had a fairly
383 * strict set of visual types that could be supported. FBConfigs that
384 * cannot be supported are not converted.
386 * \param psc Screen whose FBConfigs need to be swizzled.
389 * If memory could be allocated and at least one FBConfig could be converted
390 * to a \c __GLXvisualConfig structure, \c GL_TRUE is returned. Otherwise,
391 * \c GL_FALSE is returned.
394 * When the old DRI driver interface is no longer supported, this function
398 FillInVisuals( __GLXscreenConfigs
* psc
)
400 __GLcontextModes
*modes
;
401 int glx_visual_count
;
404 glx_visual_count
= 0;
405 for ( modes
= psc
->configs
; modes
!= NULL
; modes
= modes
->next
) {
406 if ( MODE_HAS_MOJO( modes
) ) {
411 psc
->old_configs
= (__GLXvisualConfig
*)
412 Xmalloc( sizeof( __GLXvisualConfig
) * glx_visual_count
);
413 if ( psc
->old_configs
== NULL
) {
417 glx_visual_count
= 0;
418 for ( modes
= psc
->configs
; modes
!= NULL
; modes
= modes
->next
) {
419 if ( MODE_HAS_MOJO( modes
) ) {
421 #define COPY_VALUE(src_tag,dst_tag) \
422 psc->old_configs[glx_visual_count]. dst_tag = modes-> src_tag
424 COPY_VALUE( visualID
, vid
);
425 COPY_VALUE( rgbMode
, rgba
);
426 COPY_VALUE( stereoMode
, stereo
);
427 COPY_VALUE( doubleBufferMode
, doubleBuffer
);
429 psc
->old_configs
[glx_visual_count
].class =
430 _gl_convert_to_x_visual_type( modes
->visualType
);
432 COPY_VALUE( level
, level
);
433 COPY_VALUE( numAuxBuffers
, auxBuffers
);
435 COPY_VALUE( redBits
, redSize
);
436 COPY_VALUE( greenBits
, greenSize
);
437 COPY_VALUE( blueBits
, blueSize
);
438 COPY_VALUE( alphaBits
, alphaSize
);
439 COPY_VALUE( rgbBits
, bufferSize
);
440 COPY_VALUE( accumRedBits
, accumRedSize
);
441 COPY_VALUE( accumGreenBits
, accumGreenSize
);
442 COPY_VALUE( accumBlueBits
, accumBlueSize
);
443 COPY_VALUE( accumAlphaBits
, accumAlphaSize
);
444 COPY_VALUE( depthBits
, depthSize
);
445 COPY_VALUE( stencilBits
, stencilSize
);
447 COPY_VALUE( visualRating
, visualRating
);
448 COPY_VALUE( transparentPixel
, transparentPixel
);
449 COPY_VALUE( transparentRed
, transparentRed
);
450 COPY_VALUE( transparentGreen
, transparentGreen
);
451 COPY_VALUE( transparentBlue
, transparentBlue
);
452 COPY_VALUE( transparentAlpha
, transparentAlpha
);
453 COPY_VALUE( transparentIndex
, transparentIndex
);
461 psc
->numOldConfigs
= glx_visual_count
;
462 if ( glx_visual_count
== 0 ) {
463 Xfree( psc
->old_configs
);
464 psc
->old_configs
= NULL
;
467 return (glx_visual_count
!= 0);
472 __glXInitializeVisualConfigFromTags( __GLcontextModes
*config
, int count
,
473 const INT32
*bp
, Bool tagged_only
,
474 Bool fbconfig_style_tags
)
479 /* Copy in the first set of properties */
480 config
->visualID
= *bp
++;
482 config
->visualType
= _gl_convert_from_x_visual_type( *bp
++ );
484 config
->rgbMode
= *bp
++;
486 config
->redBits
= *bp
++;
487 config
->greenBits
= *bp
++;
488 config
->blueBits
= *bp
++;
489 config
->alphaBits
= *bp
++;
490 config
->accumRedBits
= *bp
++;
491 config
->accumGreenBits
= *bp
++;
492 config
->accumBlueBits
= *bp
++;
493 config
->accumAlphaBits
= *bp
++;
495 config
->doubleBufferMode
= *bp
++;
496 config
->stereoMode
= *bp
++;
498 config
->rgbBits
= *bp
++;
499 config
->depthBits
= *bp
++;
500 config
->stencilBits
= *bp
++;
501 config
->numAuxBuffers
= *bp
++;
502 config
->level
= *bp
++;
504 count
-= __GLX_MIN_CONFIG_PROPS
;
508 ** Additional properties may be in a list at the end
509 ** of the reply. They are in pairs of property type
510 ** and property value.
513 #define FETCH_OR_SET(tag) \
514 config-> tag = ( fbconfig_style_tags ) ? *bp++ : 1
516 for (i
= 0; i
< count
; i
+= 2 ) {
519 FETCH_OR_SET( rgbMode
);
521 case GLX_BUFFER_SIZE
:
522 config
->rgbBits
= *bp
++;
525 config
->level
= *bp
++;
527 case GLX_DOUBLEBUFFER
:
528 FETCH_OR_SET( doubleBufferMode
);
531 FETCH_OR_SET( stereoMode
);
533 case GLX_AUX_BUFFERS
:
534 config
->numAuxBuffers
= *bp
++;
537 config
->redBits
= *bp
++;
540 config
->greenBits
= *bp
++;
543 config
->blueBits
= *bp
++;
546 config
->alphaBits
= *bp
++;
549 config
->depthBits
= *bp
++;
551 case GLX_STENCIL_SIZE
:
552 config
->stencilBits
= *bp
++;
554 case GLX_ACCUM_RED_SIZE
:
555 config
->accumRedBits
= *bp
++;
557 case GLX_ACCUM_GREEN_SIZE
:
558 config
->accumGreenBits
= *bp
++;
560 case GLX_ACCUM_BLUE_SIZE
:
561 config
->accumBlueBits
= *bp
++;
563 case GLX_ACCUM_ALPHA_SIZE
:
564 config
->accumAlphaBits
= *bp
++;
566 case GLX_VISUAL_CAVEAT_EXT
:
567 config
->visualRating
= *bp
++;
569 case GLX_X_VISUAL_TYPE
:
570 config
->visualType
= *bp
++;
572 case GLX_TRANSPARENT_TYPE
:
573 config
->transparentPixel
= *bp
++;
575 case GLX_TRANSPARENT_INDEX_VALUE
:
576 config
->transparentIndex
= *bp
++;
578 case GLX_TRANSPARENT_RED_VALUE
:
579 config
->transparentRed
= *bp
++;
581 case GLX_TRANSPARENT_GREEN_VALUE
:
582 config
->transparentGreen
= *bp
++;
584 case GLX_TRANSPARENT_BLUE_VALUE
:
585 config
->transparentBlue
= *bp
++;
587 case GLX_TRANSPARENT_ALPHA_VALUE
:
588 config
->transparentAlpha
= *bp
++;
591 config
->visualID
= *bp
++;
593 case GLX_DRAWABLE_TYPE
:
594 config
->drawableType
= *bp
++;
596 case GLX_RENDER_TYPE
:
597 config
->renderType
= *bp
++;
599 case GLX_X_RENDERABLE
:
600 config
->xRenderable
= *bp
++;
602 case GLX_FBCONFIG_ID
:
603 config
->fbconfigID
= *bp
++;
605 case GLX_MAX_PBUFFER_WIDTH
:
606 config
->maxPbufferWidth
= *bp
++;
608 case GLX_MAX_PBUFFER_HEIGHT
:
609 config
->maxPbufferHeight
= *bp
++;
611 case GLX_MAX_PBUFFER_PIXELS
:
612 config
->maxPbufferPixels
= *bp
++;
614 case GLX_OPTIMAL_PBUFFER_WIDTH_SGIX
:
615 config
->optimalPbufferWidth
= *bp
++;
617 case GLX_OPTIMAL_PBUFFER_HEIGHT_SGIX
:
618 config
->optimalPbufferHeight
= *bp
++;
620 case GLX_VISUAL_SELECT_GROUP_SGIX
:
621 config
->visualSelectGroup
= *bp
++;
623 case GLX_SWAP_METHOD_OML
:
624 config
->swapMethod
= *bp
++;
626 case GLX_SAMPLE_BUFFERS_SGIS
:
627 config
->sampleBuffers
= *bp
++;
629 case GLX_SAMPLES_SGIS
:
630 config
->samples
= *bp
++;
640 config
->renderType
= (config
->rgbMode
) ? GLX_RGBA_BIT
: GLX_COLOR_INDEX_BIT
;
642 config
->haveAccumBuffer
= ((config
->accumRedBits
+
643 config
->accumGreenBits
+
644 config
->accumBlueBits
+
645 config
->accumAlphaBits
) > 0);
646 config
->haveDepthBuffer
= (config
->depthBits
> 0);
647 config
->haveStencilBuffer
= (config
->stencilBits
> 0);
651 #ifdef GLX_DIRECT_RENDERING
653 filter_modes( __GLcontextModes
** server_modes
,
654 const __GLcontextModes
* driver_modes
)
656 __GLcontextModes
* m
;
657 __GLcontextModes
** prev_next
;
658 const __GLcontextModes
* check
;
659 unsigned modes_count
= 0;
661 if ( driver_modes
== NULL
) {
662 fprintf(stderr
, "libGL warning: 3D driver returned no fbconfigs.\n");
666 /* For each mode in server_modes, check to see if a matching mode exists
667 * in driver_modes. If not, then the mode is not available.
670 prev_next
= server_modes
;
671 for ( m
= *prev_next
; m
!= NULL
; m
= *prev_next
) {
672 GLboolean do_delete
= GL_TRUE
;
674 for ( check
= driver_modes
; check
!= NULL
; check
= check
->next
) {
675 if ( _gl_context_modes_are_same( m
, check
) ) {
676 do_delete
= GL_FALSE
;
681 /* The 3D has to support all the modes that match the GLX visuals
682 * sent from the X server.
684 if ( do_delete
&& (m
->visualID
!= 0) ) {
685 do_delete
= GL_FALSE
;
687 fprintf(stderr
, "libGL warning: 3D driver claims to not support "
688 "visual 0x%02x\n", m
->visualID
);
692 *prev_next
= m
->next
;
695 _gl_context_modes_destroy( m
);
699 prev_next
= & m
->next
;
709 * Perform the required libGL-side initialization and call the client-side
710 * driver's \c __driCreateNewScreen function.
712 * \param dpy Display pointer.
713 * \param scrn Screen number on the display.
714 * \param psc DRI screen information.
715 * \param driDpy DRI display information.
716 * \param createNewScreen Pointer to the client-side driver's
717 * \c __driCreateNewScreen function.
718 * \returns A pointer to the \c __DRIscreenPrivate structure returned by
719 * the client-side driver on success, or \c NULL on failure.
721 * \todo This function needs to be modified to remove context-modes from the
722 * list stored in the \c __GLXscreenConfigsRec to match the list
723 * returned by the client-side driver.
726 CallCreateNewScreen(Display
*dpy
, int scrn
, __DRIscreen
*psc
,
727 __DRIdisplay
* driDpy
,
728 CreateNewScreenFunc createNewScreen
)
730 __DRIscreenPrivate
*psp
= NULL
;
731 #ifndef GLX_USE_APPLEGL
735 __DRIversion ddx_version
;
736 __DRIversion dri_version
;
737 __DRIversion drm_version
;
738 __DRIframebuffer framebuffer
;
741 const char * err_msg
;
742 const char * err_extra
;
743 int api_ver
= __glXGetInternalVersion();
746 dri_version
.major
= driDpy
->private->driMajor
;
747 dri_version
.minor
= driDpy
->private->driMinor
;
748 dri_version
.patch
= driDpy
->private->driPatch
;
751 err_msg
= "XF86DRIOpenConnection";
754 framebuffer
.dev_priv
= NULL
;
756 if (XF86DRIOpenConnection(dpy
, scrn
, &hSAREA
, &BusID
)) {
757 fd
= drmOpen(NULL
,BusID
);
758 Xfree(BusID
); /* No longer needed */
760 err_msg
= "open DRM";
761 err_extra
= strerror( -fd
);
766 err_msg
= "drmGetMagic";
769 if (!drmGetMagic(fd
, &magic
)) {
770 drmVersionPtr version
= drmGetVersion(fd
);
772 drm_version
.major
= version
->version_major
;
773 drm_version
.minor
= version
->version_minor
;
774 drm_version
.patch
= version
->version_patchlevel
;
775 drmFreeVersion(version
);
778 drm_version
.major
= -1;
779 drm_version
.minor
= -1;
780 drm_version
.patch
= -1;
783 err_msg
= "XF86DRIAuthConnection";
784 if (XF86DRIAuthConnection(dpy
, scrn
, magic
)) {
788 * Get device name (like "tdfx") and the ddx version numbers.
789 * We'll check the version in each DRI driver's "createScreen"
792 err_msg
= "XF86DRIGetClientDriverName";
793 if (XF86DRIGetClientDriverName(dpy
, scrn
,
801 /* No longer needed. */
806 * Get device-specific info. pDevPriv will point to a struct
807 * (such as DRIRADEONRec in xfree86/driver/ati/radeon_dri.h)
808 * that has information about the screen size, depth, pitch,
809 * ancilliary buffers, DRM mmap handles, etc.
811 err_msg
= "XF86DRIGetDeviceInfo";
812 if (XF86DRIGetDeviceInfo(dpy
, scrn
,
817 &framebuffer
.dev_priv_size
,
818 &framebuffer
.dev_priv
)) {
819 framebuffer
.width
= DisplayWidth(dpy
, scrn
);
820 framebuffer
.height
= DisplayHeight(dpy
, scrn
);
823 * Map the framebuffer region.
825 status
= drmMap(fd
, hFB
, framebuffer
.size
,
826 (drmAddressPtr
)&framebuffer
.base
);
828 err_msg
= "drmMap of framebuffer";
829 err_extra
= strerror( -status
);
833 * Map the SAREA region. Further mmap regions may be setup in
834 * each DRI driver's "createScreen" function.
836 status
= drmMap(fd
, hSAREA
, SAREA_MAX
,
839 err_msg
= "drmMap of sarea";
840 err_extra
= strerror( -status
);
843 __GLcontextModes
* driver_modes
= NULL
;
844 __GLXscreenConfigs
*configs
= psc
->screenConfigs
;
846 err_msg
= "InitDriver";
848 psp
= (*createNewScreen
)(dpy
, scrn
,
860 filter_modes( & configs
->configs
,
862 _gl_context_modes_destroy( driver_modes
);
873 if ( pSAREA
!= MAP_FAILED
) {
874 (void)drmUnmap(pSAREA
, SAREA_MAX
);
877 if ( framebuffer
.base
!= MAP_FAILED
) {
878 (void)drmUnmap((drmAddress
)framebuffer
.base
, framebuffer
.size
);
881 if ( framebuffer
.dev_priv
!= NULL
) {
882 Xfree(framebuffer
.dev_priv
);
889 (void)XF86DRICloseConnection(dpy
, scrn
);
891 if ( err_extra
!= NULL
) {
892 fprintf(stderr
, "libGL error: %s failed (%s)\n", err_msg
,
896 fprintf(stderr
, "libGL error: %s failed\n", err_msg
);
899 fprintf(stderr
, "libGL error: reverting to (slow) indirect rendering\n");
901 #endif /* !GLX_USE_APPLEGL */
905 #endif /* GLX_DIRECT_RENDERING */
909 ** Allocate the memory for the per screen configs for each screen.
910 ** If that works then fetch the per screen configs data.
912 static Bool
AllocAndFetchScreenConfigs(Display
*dpy
, __GLXdisplayPrivate
*priv
)
914 xGLXGetVisualConfigsReq
*req
;
915 xGLXGetFBConfigsReq
*fb_req
;
916 xGLXVendorPrivateWithReplyReq
*vpreq
;
917 xGLXGetFBConfigsSGIXReq
*sgi_req
;
918 xGLXGetVisualConfigsReply reply
;
919 __GLXscreenConfigs
*psc
;
920 __GLcontextModes
*config
;
921 GLint i
, j
, nprops
, screens
;
922 INT32 buf
[__GLX_TOTAL_CONFIG
], *props
;
923 unsigned supported_request
= 0;
927 ** First allocate memory for the array of per screen configs.
929 screens
= ScreenCount(dpy
);
930 psc
= (__GLXscreenConfigs
*) Xmalloc(screens
* sizeof(__GLXscreenConfigs
));
934 memset(psc
, 0, screens
* sizeof(__GLXscreenConfigs
));
935 priv
->screenConfigs
= psc
;
937 priv
->serverGLXversion
= __glXGetStringFromServer(dpy
, priv
->majorOpcode
,
938 X_GLXQueryServerString
,
940 if ( priv
->serverGLXversion
== NULL
) {
941 FreeScreenConfigs(priv
);
945 if ( atof( priv
->serverGLXversion
) >= 1.3 ) {
946 supported_request
= 1;
950 ** Now fetch each screens configs structures. If a screen supports
951 ** GL (by returning a numVisuals > 0) then allocate memory for our
952 ** config structure and then fill it in.
954 for (i
= 0; i
< screens
; i
++, psc
++) {
955 if ( supported_request
!= 1 ) {
956 psc
->serverGLXexts
= __glXGetStringFromServer(dpy
, priv
->majorOpcode
,
957 X_GLXQueryServerString
,
959 if ( strstr( psc
->serverGLXexts
, "GLX_SGIX_fbconfig" ) != NULL
) {
960 supported_request
= 2;
963 supported_request
= 3;
969 switch( supported_request
) {
971 GetReq(GLXGetFBConfigs
,fb_req
);
972 fb_req
->reqType
= priv
->majorOpcode
;
973 fb_req
->glxCode
= X_GLXGetFBConfigs
;
978 GetReqExtra(GLXVendorPrivateWithReply
,
979 sz_xGLXGetFBConfigsSGIXReq
-sz_xGLXVendorPrivateWithReplyReq
,vpreq
);
980 sgi_req
= (xGLXGetFBConfigsSGIXReq
*) vpreq
;
981 sgi_req
->reqType
= priv
->majorOpcode
;
982 sgi_req
->glxCode
= X_GLXVendorPrivateWithReply
;
983 sgi_req
->vendorCode
= X_GLXvop_GetFBConfigsSGIX
;
988 GetReq(GLXGetVisualConfigs
,req
);
989 req
->reqType
= priv
->majorOpcode
;
990 req
->glxCode
= X_GLXGetVisualConfigs
;
995 if (!_XReply(dpy
, (xReply
*) &reply
, 0, False
)) {
996 /* Something is busted. Punt. */
998 FreeScreenConfigs(priv
);
1003 if (!reply
.numVisuals
) {
1004 /* This screen does not support GL rendering */
1009 /* FIXME: Is the __GLX_MIN_CONFIG_PROPS test correct for
1012 /* Check number of properties */
1013 nprops
= reply
.numProps
;
1014 if ((nprops
< __GLX_MIN_CONFIG_PROPS
) ||
1015 (nprops
> __GLX_MAX_CONFIG_PROPS
)) {
1016 /* Huh? Not in protocol defined limits. Punt */
1019 FreeScreenConfigs(priv
);
1023 /* Allocate memory for our config structure */
1024 psc
->configs
= _gl_context_modes_create(reply
.numVisuals
,
1025 sizeof(__GLcontextModes
));
1026 if (!psc
->configs
) {
1029 FreeScreenConfigs(priv
);
1033 /* Allocate memory for the properties, if needed */
1034 if ( supported_request
!= 3 ) {
1038 prop_size
= nprops
* __GLX_SIZE_INT32
;
1040 if (prop_size
<= sizeof(buf
)) {
1043 props
= (INT32
*) Xmalloc(prop_size
);
1046 /* Read each config structure and convert it into our format */
1047 config
= psc
->configs
;
1048 for (j
= 0; j
< reply
.numVisuals
; j
++) {
1049 assert( config
!= NULL
);
1050 _XRead(dpy
, (char *)props
, prop_size
);
1052 if ( supported_request
!= 3 ) {
1053 config
->rgbMode
= GL_TRUE
;
1054 config
->drawableType
= GLX_WINDOW_BIT
;
1057 config
->drawableType
= GLX_WINDOW_BIT
| GLX_PIXMAP_BIT
;
1060 __glXInitializeVisualConfigFromTags( config
, nprops
, props
,
1061 (supported_request
!= 3),
1063 if ( config
->fbconfigID
== GLX_DONT_CARE
) {
1064 config
->fbconfigID
= config
->visualID
;
1067 config
= config
->next
;
1070 Xfree((char *)props
);
1074 #ifdef GLX_DIRECT_RENDERING
1075 /* Initialize per screen dynamic client GLX extensions */
1076 psc
->ext_list_first_time
= GL_TRUE
;
1077 /* Initialize the direct rendering per screen data and functions */
1078 if (priv
->driDisplay
.private != NULL
) {
1079 if (priv
->driDisplay
.createNewScreen
&&
1080 priv
->driDisplay
.createNewScreen
[i
]) {
1082 psc
->driScreen
.screenConfigs
= (void *)psc
;
1083 psc
->driScreen
.private =
1084 CallCreateNewScreen(dpy
, i
, & psc
->driScreen
,
1086 priv
->driDisplay
.createNewScreen
[i
] );
1088 else if (priv
->driDisplay
.createScreen
&&
1089 priv
->driDisplay
.createScreen
[i
]) {
1090 /* screen initialization (bootstrap the driver) */
1091 if ( (psc
->old_configs
== NULL
)
1092 && !FillInVisuals(psc
) ) {
1093 FreeScreenConfigs(priv
);
1097 psc
->driScreen
.screenConfigs
= (void *)psc
;
1098 psc
->driScreen
.private =
1099 (*(priv
->driDisplay
.createScreen
[i
]))(dpy
, i
, &psc
->driScreen
,
1111 ** Initialize the client side extension code.
1113 __GLXdisplayPrivate
*__glXInitialize(Display
* dpy
)
1115 XExtDisplayInfo
*info
= __glXFindDisplay(dpy
);
1116 XExtData
**privList
, *private, *found
;
1117 __GLXdisplayPrivate
*dpyPriv
;
1118 XEDataObject dataObj
;
1121 #if defined(GLX_DIRECT_RENDERING) && defined(XTHREADS)
1123 static int firstCall
= 1;
1125 /* initialize the GLX mutexes */
1126 xmutex_init(&__glXmutex
);
1133 /* The one and only long long lock */
1136 if (!XextHasExtension(info
)) {
1137 /* No GLX extension supported by this server. Oh well. */
1139 XMissingExtension(dpy
, __glXExtensionName
);
1143 /* See if a display private already exists. If so, return it */
1144 dataObj
.display
= dpy
;
1145 privList
= XEHeadOfExtensionList(dataObj
);
1146 found
= XFindOnExtensionList(privList
, info
->codes
->extension
);
1149 return (__GLXdisplayPrivate
*) found
->private_data
;
1152 /* See if the versions are compatible */
1153 if (!QueryVersion(dpy
, info
->codes
->major_opcode
, &major
, &minor
)) {
1154 /* The client and server do not agree on versions. Punt. */
1160 ** Allocate memory for all the pieces needed for this buffer.
1162 private = (XExtData
*) Xmalloc(sizeof(XExtData
));
1167 dpyPriv
= (__GLXdisplayPrivate
*) Xmalloc(sizeof(__GLXdisplayPrivate
));
1170 Xfree((char*) private);
1175 ** Init the display private and then read in the screen config
1176 ** structures from the server.
1178 dpyPriv
->majorOpcode
= info
->codes
->major_opcode
;
1179 dpyPriv
->majorVersion
= major
;
1180 dpyPriv
->minorVersion
= minor
;
1183 dpyPriv
->serverGLXvendor
= 0x0;
1184 dpyPriv
->serverGLXversion
= 0x0;
1186 #ifdef GLX_DIRECT_RENDERING
1188 ** Initialize the direct rendering per display data and functions.
1189 ** Note: This _must_ be done before calling any other DRI routines
1190 ** (e.g., those called in AllocAndFetchScreenConfigs).
1192 if (getenv("LIBGL_ALWAYS_INDIRECT")) {
1193 /* Assinging zero here assures we'll never go direct */
1194 dpyPriv
->driDisplay
.private = 0;
1195 dpyPriv
->driDisplay
.destroyDisplay
= 0;
1196 dpyPriv
->driDisplay
.createScreen
= 0;
1199 dpyPriv
->driDisplay
.private =
1200 driCreateDisplay(dpy
, &dpyPriv
->driDisplay
);
1204 if (!AllocAndFetchScreenConfigs(dpy
, dpyPriv
)) {
1206 Xfree((char*) dpyPriv
);
1207 Xfree((char*) private);
1212 ** Fill in the private structure. This is the actual structure that
1213 ** hangs off of the Display structure. Our private structure is
1214 ** referred to by this structure. Got that?
1216 private->number
= info
->codes
->extension
;
1218 private->free_private
= __glXFreeDisplayPrivate
;
1219 private->private_data
= (char *) dpyPriv
;
1220 XAddToExtensionList(privList
, private);
1222 if (dpyPriv
->majorVersion
== 1 && dpyPriv
->minorVersion
>= 1) {
1223 __glXClientInfo(dpy
, dpyPriv
->majorOpcode
);
1231 ** Setup for sending a GLX command on dpy. Make sure the extension is
1232 ** initialized. Try to avoid calling __glXInitialize as its kinda slow.
1234 CARD8
__glXSetupForCommand(Display
*dpy
)
1237 __GLXdisplayPrivate
*priv
;
1239 /* If this thread has a current context, flush its rendering commands */
1240 gc
= __glXGetCurrentContext();
1241 if (gc
->currentDpy
) {
1242 /* Flush rendering buffer of the current context, if any */
1243 (void) __glXFlushRenderBuffer(gc
, gc
->pc
);
1245 if (gc
->currentDpy
== dpy
) {
1246 /* Use opcode from gc because its right */
1248 return gc
->majorOpcode
;
1251 ** Have to get info about argument dpy because it might be to
1252 ** a different server
1257 /* Forced to lookup extension via the slow initialize route */
1258 priv
= __glXInitialize(dpy
);
1262 return priv
->majorOpcode
;
1266 ** Flush the drawing command transport buffer.
1268 GLubyte
*__glXFlushRenderBuffer(__GLXcontext
*ctx
, GLubyte
*pc
)
1274 if (!(dpy
= ctx
->currentDpy
)) {
1275 /* Using the dummy context */
1280 size
= pc
- ctx
->buf
;
1282 /* Send the entire buffer as an X request */
1284 GetReq(GLXRender
,req
);
1285 req
->reqType
= ctx
->majorOpcode
;
1286 req
->glxCode
= X_GLXRender
;
1287 req
->contextTag
= ctx
->currentContextTag
;
1288 req
->length
+= (size
+ 3) >> 2;
1289 _XSend(dpy
, (char *)ctx
->buf
, size
);
1294 /* Reset pointer and return it */
1301 * Send a portion of a GLXRenderLarge command to the server. The advantage of
1302 * this function over \c __glXSendLargeCommand is that callers can use the
1303 * data buffer in the GLX context and may be able to avoid allocating an
1304 * extra buffer. The disadvantage is the clients will have to do more
1305 * GLX protocol work (i.e., calculating \c totalRequests, etc.).
1307 * \sa __glXSendLargeCommand
1309 * \param gc GLX context
1310 * \param requestNumber Which part of the whole command is this? The first
1312 * \param totalRequests How many requests will there be?
1313 * \param data Command data.
1314 * \param dataLen Size, in bytes, of the command data.
1316 void __glXSendLargeChunk(__GLXcontext
*gc
, GLint requestNumber
,
1317 GLint totalRequests
,
1318 const GLvoid
* data
, GLint dataLen
)
1320 Display
*dpy
= gc
->currentDpy
;
1321 xGLXRenderLargeReq
*req
;
1323 if ( requestNumber
== 1 ) {
1327 GetReq(GLXRenderLarge
,req
);
1328 req
->reqType
= gc
->majorOpcode
;
1329 req
->glxCode
= X_GLXRenderLarge
;
1330 req
->contextTag
= gc
->currentContextTag
;
1331 req
->length
+= (dataLen
+ 3) >> 2;
1332 req
->requestNumber
= requestNumber
;
1333 req
->requestTotal
= totalRequests
;
1334 req
->dataBytes
= dataLen
;
1335 Data(dpy
, data
, dataLen
);
1337 if ( requestNumber
== totalRequests
) {
1345 * Send a command that is too large for the GLXRender protocol request.
1347 * Send a large command, one that is too large for some reason to
1348 * send using the GLXRender protocol request. One reason to send
1349 * a large command is to avoid copying the data.
1351 * \param ctx GLX context
1352 * \param header Header data.
1353 * \param headerLen Size, in bytes, of the header data. It is assumed that
1354 * the header data will always be small enough to fit in
1355 * a single X protocol packet.
1356 * \param data Command data.
1357 * \param dataLen Size, in bytes, of the command data.
1359 void __glXSendLargeCommand(__GLXcontext
*ctx
,
1360 const GLvoid
*header
, GLint headerLen
,
1361 const GLvoid
*data
, GLint dataLen
)
1364 GLint totalRequests
, requestNumber
;
1367 ** Calculate the maximum amount of data can be stuffed into a single
1368 ** packet. sz_xGLXRenderReq is added because bufSize is the maximum
1369 ** packet size minus sz_xGLXRenderReq.
1371 maxSize
= (ctx
->bufSize
+ sz_xGLXRenderReq
) - sz_xGLXRenderLargeReq
;
1372 totalRequests
= 1 + (dataLen
/ maxSize
);
1373 if (dataLen
% maxSize
) totalRequests
++;
1376 ** Send all of the command, except the large array, as one request.
1378 assert( headerLen
<= maxSize
);
1379 __glXSendLargeChunk(ctx
, 1, totalRequests
, header
, headerLen
);
1382 ** Send enough requests until the whole array is sent.
1384 for ( requestNumber
= 2 ; requestNumber
<= (totalRequests
- 1) ; requestNumber
++ ) {
1385 __glXSendLargeChunk(ctx
, requestNumber
, totalRequests
, data
, maxSize
);
1386 data
= (const GLvoid
*) (((const GLubyte
*) data
) + maxSize
);
1388 assert( dataLen
> 0 );
1391 assert( dataLen
<= maxSize
);
1392 __glXSendLargeChunk(ctx
, requestNumber
, totalRequests
, data
, dataLen
);
1395 /************************************************************************/
1397 GLXContext
glXGetCurrentContext(void)
1399 GLXContext cx
= __glXGetCurrentContext();
1401 if (cx
== &dummyContext
) {
1408 GLXDrawable
glXGetCurrentDrawable(void)
1410 GLXContext gc
= __glXGetCurrentContext();
1411 return gc
->currentDrawable
;
1415 /************************************************************************/
1417 #ifdef GLX_DIRECT_RENDERING
1418 /* Return the DRI per screen structure */
1419 __DRIscreen
*__glXFindDRIScreen(__DRInativeDisplay
*dpy
, int scrn
)
1421 __DRIscreen
*pDRIScreen
= NULL
;
1422 XExtDisplayInfo
*info
= __glXFindDisplay(dpy
);
1423 XExtData
**privList
, *found
;
1424 __GLXdisplayPrivate
*dpyPriv
;
1425 XEDataObject dataObj
;
1428 dataObj
.display
= dpy
;
1429 privList
= XEHeadOfExtensionList(dataObj
);
1430 found
= XFindOnExtensionList(privList
, info
->codes
->extension
);
1434 dpyPriv
= (__GLXdisplayPrivate
*)found
->private_data
;
1435 pDRIScreen
= &dpyPriv
->screenConfigs
[scrn
].driScreen
;
1442 /************************************************************************/
1444 static Bool
SendMakeCurrentRequest( Display
*dpy
, CARD8 opcode
,
1445 GLXContextID gc
, GLXContextTag old_gc
, GLXDrawable draw
, GLXDrawable read
,
1446 xGLXMakeCurrentReply
* reply
);
1449 * Sends a GLX protocol message to the specified display to make the context
1450 * and the drawables current.
1452 * \param dpy Display to send the message to.
1453 * \param opcode Major opcode value for the display.
1454 * \param gc_id Context tag for the context to be made current.
1455 * \param draw Drawable ID for the "draw" drawable.
1456 * \param read Drawable ID for the "read" drawable.
1457 * \param reply Space to store the X-server's reply.
1460 * This function assumes that \c dpy is locked with \c LockDisplay on entry.
1462 static Bool
SendMakeCurrentRequest( Display
*dpy
, CARD8 opcode
,
1463 GLXContextID gc_id
, GLXContextTag gc_tag
,
1464 GLXDrawable draw
, GLXDrawable read
,
1465 xGLXMakeCurrentReply
* reply
)
1467 if ( draw
== read
) {
1468 xGLXMakeCurrentReq
*req
;
1470 GetReq(GLXMakeCurrent
,req
);
1471 req
->reqType
= opcode
;
1472 req
->glxCode
= X_GLXMakeCurrent
;
1473 req
->drawable
= draw
;
1474 req
->context
= gc_id
;
1475 req
->oldContextTag
= gc_tag
;
1478 __GLXdisplayPrivate
*priv
= __glXInitialize(dpy
);
1480 /* If the server can support the GLX 1.3 version, we should
1481 * perfer that. Not only that, some servers support GLX 1.3 but
1482 * not the SGI extension.
1485 if ( (priv
->majorVersion
> 1) || (priv
->minorVersion
>= 3) ) {
1486 xGLXMakeContextCurrentReq
*req
;
1488 GetReq(GLXMakeContextCurrent
,req
);
1489 req
->reqType
= opcode
;
1490 req
->glxCode
= X_GLXMakeContextCurrent
;
1491 req
->drawable
= draw
;
1492 req
->readdrawable
= read
;
1493 req
->context
= gc_id
;
1494 req
->oldContextTag
= gc_tag
;
1497 xGLXVendorPrivateWithReplyReq
*vpreq
;
1498 xGLXMakeCurrentReadSGIReq
*req
;
1500 GetReqExtra(GLXVendorPrivateWithReply
,
1501 sz_xGLXMakeCurrentReadSGIReq
-sz_xGLXVendorPrivateWithReplyReq
,vpreq
);
1502 req
= (xGLXMakeCurrentReadSGIReq
*)vpreq
;
1503 req
->reqType
= opcode
;
1504 req
->glxCode
= X_GLXVendorPrivateWithReply
;
1505 req
->vendorCode
= X_GLXvop_MakeCurrentReadSGI
;
1506 req
->drawable
= draw
;
1507 req
->readable
= read
;
1508 req
->context
= gc_id
;
1509 req
->oldContextTag
= gc_tag
;
1513 return _XReply(dpy
, (xReply
*) reply
, 0, False
);
1517 static Bool
BindContextWrapper( Display
*dpy
, GLXContext gc
,
1518 GLXDrawable draw
, GLXDrawable read
)
1520 #ifdef GLX_DIRECT_RENDERING
1521 if ( gc
->driContext
.bindContext3
!= NULL
) {
1522 return (*gc
->driContext
.bindContext3
)(dpy
, gc
->screen
, draw
, read
,
1526 return (*gc
->driContext
.bindContext2
)(dpy
, gc
->screen
, draw
, read
,
1535 static Bool
UnbindContextWrapper( Display
*dpy
, GLXContext gc
)
1537 #ifdef GLX_DIRECT_RENDERING
1538 if ( gc
->driContext
.unbindContext3
!= NULL
) {
1539 return (*gc
->driContext
.unbindContext3
)(dpy
, gc
->screen
,
1540 gc
->currentDrawable
,
1541 gc
->currentReadable
,
1545 return (*gc
->driContext
.unbindContext2
)(dpy
, gc
->screen
,
1546 gc
->currentDrawable
,
1547 gc
->currentReadable
, gc
);
1556 ** Make a particular context current.
1557 ** NOTE: this is in this file so that it can access dummyContext.
1559 static Bool
MakeContextCurrent(Display
*dpy
,
1560 GLXDrawable draw
, GLXDrawable read
,
1563 xGLXMakeCurrentReply reply
;
1565 CARD8 opcode
, oldOpcode
;
1566 Bool sentRequestToOldDpy
= False
;
1567 Bool bindReturnValue
= True
;
1569 opcode
= __glXSetupForCommand(dpy
);
1575 ** Make sure that the new context has a nonzero ID. In the request,
1576 ** a zero context ID is used only to mean that we bind to no current
1579 if ((gc
!= NULL
) && (gc
->xid
== None
)) {
1583 oldGC
= __glXGetCurrentContext();
1584 oldOpcode
= (gc
== oldGC
) ? opcode
: __glXSetupForCommand(dpy
);
1589 if ((dpy
!= oldGC
->currentDpy
|| (gc
&& gc
->isDirect
)) &&
1590 !oldGC
->isDirect
&& oldGC
!= &dummyContext
) {
1592 ** We are either switching from one dpy to another and have to
1593 ** send a request to the previous dpy to unbind the previous
1594 ** context, or we are switching away from a indirect context to
1595 ** a direct context and have to send a request to the dpy to
1596 ** unbind the previous context.
1598 sentRequestToOldDpy
= True
;
1599 LockDisplay(oldGC
->currentDpy
);
1600 if ( ! SendMakeCurrentRequest( oldGC
->currentDpy
, oldOpcode
, None
,
1601 oldGC
->currentContextTag
, None
, None
,
1603 /* The make current failed. Just return GL_FALSE. */
1604 UnlockDisplay(oldGC
->currentDpy
);
1609 oldGC
->currentContextTag
= 0;
1612 #ifdef GLX_DIRECT_RENDERING
1613 /* Unbind the old direct rendering context */
1614 if (oldGC
->isDirect
) {
1615 if (oldGC
->driContext
.private) {
1616 if (! UnbindContextWrapper( oldGC
->currentDpy
, oldGC
)) {
1617 /* The make current failed. Just return GL_FALSE. */
1621 oldGC
->currentContextTag
= 0;
1624 /* Bind the direct rendering context to the drawable */
1625 if (gc
&& gc
->isDirect
) {
1626 if (gc
->driContext
.private) {
1627 bindReturnValue
= BindContextWrapper( dpy
, gc
, draw
, read
);
1631 _glapi_check_multithread();
1632 /* Send a glXMakeCurrent request to bind the new context. */
1635 bindReturnValue
= SendMakeCurrentRequest( dpy
, opcode
,
1636 gc
? gc
->xid
: None
,
1637 oldGC
->currentContextTag
,
1638 draw
, read
, &reply
);
1640 #ifdef GLX_DIRECT_RENDERING
1645 if (!bindReturnValue
) {
1646 /* The make current failed. */
1647 if (gc
&& !gc
->isDirect
) {
1651 #ifdef GLX_DIRECT_RENDERING
1652 /* If the old context was direct rendering, then re-bind to it. */
1653 if (oldGC
->isDirect
) {
1654 if (oldGC
->driContext
.private) {
1655 if (! BindContextWrapper( oldGC
->currentDpy
, oldGC
,
1656 oldGC
->currentDrawable
,
1657 oldGC
->currentReadable
)) {
1659 ** The request failed; this cannot happen with the
1660 ** current API. If in the future the API is
1661 ** extended to allow context sharing between
1662 ** clients, then this may fail (because another
1663 ** client may have grabbed the context); in that
1664 ** case, we cannot undo the previous request, and
1665 ** cannot adhere to the "no-op" behavior.
1672 ** If we had just sent a request to a previous dpy, we have to
1673 ** undo that request (because if a command fails, it should act
1674 ** like a no-op) by making current to the previous context and
1677 if (sentRequestToOldDpy
) {
1678 if ( !SendMakeCurrentRequest( oldGC
->currentDpy
, oldOpcode
,
1680 oldGC
->currentDrawable
,
1681 oldGC
->currentReadable
, &reply
) ) {
1682 UnlockDisplay(oldGC
->currentDpy
);
1685 ** The request failed; this cannot happen with the
1686 ** current API. If in the future the API is extended to
1687 ** allow context sharing between clients, then this may
1688 ** fail (because another client may have grabbed the
1689 ** context); in that case, we cannot undo the previous
1690 ** request, and cannot adhere to the "no-op" behavior.
1694 UnlockDisplay(oldGC
->currentDpy
);
1696 oldGC
->currentContextTag
= reply
.contextTag
;
1701 /* Update our notion of what is current */
1705 ** Even though the contexts are the same the drawable might have
1706 ** changed. Note that gc cannot be the dummy, and that oldGC
1707 ** cannot be NULL, therefore if they are the same, gc is not
1708 ** NULL and not the dummy.
1710 gc
->currentDrawable
= draw
;
1711 gc
->currentReadable
= read
;
1713 if (oldGC
!= &dummyContext
) {
1714 /* Old current context is no longer current to anybody */
1715 oldGC
->currentDpy
= 0;
1716 oldGC
->currentDrawable
= None
;
1717 oldGC
->currentReadable
= None
;
1718 oldGC
->currentContextTag
= 0;
1720 if (oldGC
->xid
== None
) {
1722 ** We are switching away from a context that was
1723 ** previously destroyed, so we need to free the memory
1724 ** for the old handle.
1726 #ifdef GLX_DIRECT_RENDERING
1727 /* Destroy the old direct rendering context */
1728 if (oldGC
->isDirect
) {
1729 if (oldGC
->driContext
.private) {
1730 (*oldGC
->driContext
.destroyContext
)
1731 (dpy
, oldGC
->screen
, oldGC
->driContext
.private);
1732 oldGC
->driContext
.private = NULL
;
1736 __glXFreeContext(oldGC
);
1740 __glXSetCurrentContext(gc
);
1741 #ifdef GLX_DIRECT_RENDERING
1742 if (!gc
->isDirect
) {
1744 IndirectAPI
= __glXNewIndirectAPI();
1745 _glapi_set_dispatch(IndirectAPI
);
1746 # ifdef GLX_USE_APPLEGL
1748 extern void XAppleDRIUseIndirectDispatch(void);
1749 XAppleDRIUseIndirectDispatch();
1754 /* if not direct rendering, always need indirect dispatch */
1756 IndirectAPI
= __glXNewIndirectAPI();
1757 _glapi_set_dispatch(IndirectAPI
);
1759 gc
->currentDpy
= dpy
;
1760 gc
->currentDrawable
= draw
;
1761 gc
->currentReadable
= read
;
1762 #ifdef GLX_DIRECT_RENDERING
1763 if (gc
->isDirect
) reply
.contextTag
= -1;
1765 gc
->currentContextTag
= reply
.contextTag
;
1767 __glXSetCurrentContext(&dummyContext
);
1768 #ifdef GLX_DIRECT_RENDERING
1769 _glapi_set_dispatch(NULL
); /* no-op functions */
1778 Bool
GLX_PREFIX(glXMakeCurrent
)(Display
*dpy
, GLXDrawable draw
, GLXContext gc
)
1780 return MakeContextCurrent( dpy
, draw
, draw
, gc
);
1783 GLX_ALIAS(Bool
, glXMakeCurrentReadSGI
,
1784 (Display
*dpy
, GLXDrawable d
, GLXDrawable r
, GLXContext ctx
),
1785 (dpy
, d
, r
, ctx
), MakeContextCurrent
)
1787 GLX_ALIAS(Bool
, glXMakeContextCurrent
,
1788 (Display
*dpy
, GLXDrawable d
, GLXDrawable r
, GLXContext ctx
),
1789 (dpy
, d
, r
, ctx
), MakeContextCurrent
)
1793 void __glXDumpDrawBuffer(__GLXcontext
*ctx
)
1795 GLubyte
*p
= ctx
->buf
;
1796 GLubyte
*end
= ctx
->pc
;
1797 GLushort opcode
, length
;
1801 opcode
= *((GLushort
*) p
);
1802 length
= *((GLushort
*) (p
+ 2));
1803 printf("%2x: %5d: ", opcode
, length
);
1806 while (length
> 0) {
1807 printf("%08x ", *((unsigned *) p
));
1816 #ifdef USE_SPARC_ASM
1818 * Used only when we are sparc, using sparc assembler.
1823 _glx_mesa_init_sparc_glapi_relocs(void)
1825 unsigned int *insn_ptr
, *end_ptr
;
1826 unsigned long disp_addr
;
1828 insn_ptr
= &_mesa_sparc_glapi_begin
;
1829 end_ptr
= &_mesa_sparc_glapi_end
;
1830 disp_addr
= (unsigned long) &_glapi_Dispatch
;
1833 * Verbatim from Mesa sparc.c. It's needed because there doesn't
1834 * seem to be a better way to do this:
1836 * UNCONDITIONAL_JUMP ( (*_glapi_Dispatch) + entry_offset )
1838 * This code is patching in the ADDRESS of the pointer to the
1839 * dispatch table. Hence, it must be called exactly once, because
1840 * that address is not going to change.
1842 * What it points to can change, but Mesa (and hence, we) assume
1843 * that there is only one pointer.
1846 while (insn_ptr
< end_ptr
) {
1847 #if ( defined(__sparc_v9__) && ( !defined(__linux__) || defined(__linux_64__) ) )
1849 This code patches for 64-bit addresses. This had better
1850 not happen for Sparc/Linux, no matter what architecture we
1851 are building for. So, don't do this.
1853 The 'defined(__linux_64__)' is used here as a placeholder for
1854 when we do do 64-bit usermode on sparc linux.
1856 insn_ptr
[0] |= (disp_addr
>> (32 + 10));
1857 insn_ptr
[1] |= ((disp_addr
& 0xffffffff) >> 10);
1858 __glapi_sparc_icache_flush(&insn_ptr
[0]);
1859 insn_ptr
[2] |= ((disp_addr
>> 32) & ((1 << 10) - 1));
1860 insn_ptr
[3] |= (disp_addr
& ((1 << 10) - 1));
1861 __glapi_sparc_icache_flush(&insn_ptr
[2]);
1864 insn_ptr
[0] |= (disp_addr
>> 10);
1865 insn_ptr
[1] |= (disp_addr
& ((1 << 10) - 1));
1866 __glapi_sparc_icache_flush(&insn_ptr
[0]);
1871 #endif /* sparc ASM in use */