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 "glxclient.h"
52 #include "indirect_init.h"
57 #include "glxextensions.h"
58 #include "glcontextmodes.h"
61 #ifdef GLX_DIRECT_RENDERING
72 void __glXDumpDrawBuffer(__GLXcontext *ctx);
77 * This is where our dispatch table's bounds are.
78 * And the static mesa_init is taken directly from
79 * Mesa's 'sparc.c' initializer.
81 * We need something like this here, because this version
82 * of openGL/glx never initializes a Mesa context, and so
83 * the address of the dispatch table pointer never gets stuffed
84 * into the dispatch jump table otherwise.
86 * It matters only on SPARC, and only if you are using assembler
87 * code instead of C-code indirect dispatch.
91 extern unsigned int _mesa_sparc_glapi_begin;
92 extern unsigned int _mesa_sparc_glapi_end;
93 extern void __glapi_sparc_icache_flush(unsigned int *);
94 static void _glx_mesa_init_sparc_glapi_relocs(void);
95 static int _mesa_sparc_needs_init = 1;
96 #define INIT_MESA_SPARC { \
97 if(_mesa_sparc_needs_init) { \
98 _glx_mesa_init_sparc_glapi_relocs(); \
99 _mesa_sparc_needs_init = 0; \
103 #define INIT_MESA_SPARC
106 static Bool MakeContextCurrent(Display *dpy, GLXDrawable draw,
107 GLXDrawable read, GLXContext gc);
110 ** We setup some dummy structures here so that the API can be used
111 ** even if no context is current.
114 static GLubyte dummyBuffer[__GLX_BUFFER_LIMIT_SIZE];
117 ** Dummy context used by small commands when there is no current context.
119 ** gl and glx entry points are designed to operate as nop's when using
120 ** the dummy context structure.
122 static __GLXcontext dummyContext = {
126 &dummyBuffer[__GLX_BUFFER_LIMIT_SIZE],
132 ** All indirect rendering contexts will share the same indirect dispatch table.
134 static __GLapi *IndirectAPI = NULL;
138 * Current context management and locking
141 #if defined(GLX_DIRECT_RENDERING) && defined(XTHREADS)
144 static GLboolean TSDinitialized = GL_FALSE;
145 static xthread_key_t ContextTSD;
147 __GLXcontext *__glXGetCurrentContext(void)
149 if (!TSDinitialized) {
150 xthread_key_create(&ContextTSD, NULL);
151 TSDinitialized = GL_TRUE;
152 return &dummyContext;
156 xthread_get_specific(ContextTSD, &p);
158 return &dummyContext;
160 return (__GLXcontext *) p;
164 void __glXSetCurrentContext(__GLXcontext *c)
166 if (!TSDinitialized) {
167 xthread_key_create(&ContextTSD, NULL);
168 TSDinitialized = GL_TRUE;
170 xthread_set_specific(ContextTSD, c);
174 /* Used by the __glXLock() and __glXUnlock() macros */
175 xmutex_rec __glXmutex;
179 /* not thread safe */
180 __GLXcontext *__glXcurrentContext = &dummyContext;
186 ** You can set this cell to 1 to force the gl drawing stuff to be
187 ** one command per packet
192 ** forward prototype declarations
194 int __glXCloseDisplay(Display *dpy, XExtCodes *codes);
196 static GLboolean FillInVisuals( __GLXscreenConfigs * psc );
198 /************************************************************************/
200 /* Extension required boiler plate */
202 static char *__glXExtensionName = GLX_EXTENSION_NAME;
203 XExtensionInfo *__glXExtensionInfo = NULL;
205 static /* const */ char *error_list[] = {
207 "GLXBadContextState",
211 "GLXBadCurrentWindow",
212 "GLXBadRenderRequest",
213 "GLXBadLargeRequest",
214 "GLXUnsupportedPrivateRequest",
217 int __glXCloseDisplay(Display *dpy, XExtCodes *codes)
221 gc = __glXGetCurrentContext();
222 if (dpy == gc->currentDpy) {
223 __glXSetCurrentContext(&dummyContext);
224 #ifdef GLX_DIRECT_RENDERING
225 _glapi_set_dispatch(NULL); /* no-op functions */
227 __glXFreeContext(gc);
230 return XextRemoveDisplay(__glXExtensionInfo, dpy);
234 static XEXT_GENERATE_ERROR_STRING(__glXErrorString, __glXExtensionName,
235 __GLX_NUMBER_ERRORS, error_list)
237 static /* const */ XExtensionHooks __glXExtensionHooks = {
238 NULL, /* create_gc */
242 NULL, /* create_font */
243 NULL, /* free_font */
244 __glXCloseDisplay, /* close_display */
245 NULL, /* wire_to_event */
246 NULL, /* event_to_wire */
248 __glXErrorString, /* error_string */
252 XEXT_GENERATE_FIND_DISPLAY(__glXFindDisplay, __glXExtensionInfo,
253 __glXExtensionName, &__glXExtensionHooks,
254 __GLX_NUMBER_EVENTS, NULL)
256 /************************************************************************/
259 ** Free the per screen configs data as well as the array of
260 ** __glXScreenConfigs.
262 static void FreeScreenConfigs(__GLXdisplayPrivate *priv)
264 __GLXscreenConfigs *psc;
267 /* Free screen configuration information */
268 psc = priv->screenConfigs;
269 screens = ScreenCount(priv->dpy);
270 for (i = 0; i < screens; i++, psc++) {
272 _gl_context_modes_destroy( psc->configs );
273 if(psc->effectiveGLXexts)
274 Xfree(psc->effectiveGLXexts);
276 if ( psc->old_configs != NULL ) {
277 Xfree( psc->old_configs );
278 psc->old_configs = NULL;
279 psc->numOldConfigs = 0;
282 psc->configs = NULL; /* NOTE: just for paranoia */
285 #ifdef GLX_DIRECT_RENDERING
286 /* Free the direct rendering per screen data */
287 if (psc->driScreen.private)
288 (*psc->driScreen.destroyScreen)(priv->dpy, i,
289 psc->driScreen.private);
290 psc->driScreen.private = NULL;
293 XFree((char*) priv->screenConfigs);
297 ** Release the private memory referred to in a display private
298 ** structure. The caller will free the extension structure.
300 static int __glXFreeDisplayPrivate(XExtData *extension)
302 __GLXdisplayPrivate *priv;
304 priv = (__GLXdisplayPrivate*) extension->private_data;
305 FreeScreenConfigs(priv);
306 if(priv->serverGLXvendor) {
307 Xfree((char*)priv->serverGLXvendor);
308 priv->serverGLXvendor = 0x0; /* to protect against double free's */
310 if(priv->serverGLXversion) {
311 Xfree((char*)priv->serverGLXversion);
312 priv->serverGLXversion = 0x0; /* to protect against double free's */
315 #if 0 /* GLX_DIRECT_RENDERING */
316 /* Free the direct rendering per display data */
317 if (priv->driDisplay.private)
318 (*priv->driDisplay.destroyDisplay)(priv->dpy,
319 priv->driDisplay.private);
320 priv->driDisplay.private = NULL;
323 #ifdef GLX_DIRECT_RENDERING
324 XFree(priv->driDisplay.createScreen);
331 /************************************************************************/
334 ** Query the version of the GLX extension. This procedure works even if
335 ** the client extension is not completely set up.
337 static Bool QueryVersion(Display *dpy, int opcode, int *major, int *minor)
339 xGLXQueryVersionReq *req;
340 xGLXQueryVersionReply reply;
342 /* Send the glXQueryVersion request */
344 GetReq(GLXQueryVersion,req);
345 req->reqType = opcode;
346 req->glxCode = X_GLXQueryVersion;
347 req->majorVersion = GLX_MAJOR_VERSION;
348 req->minorVersion = GLX_MINOR_VERSION;
349 _XReply(dpy, (xReply*) &reply, 0, False);
353 if (reply.majorVersion != GLX_MAJOR_VERSION) {
355 ** The server does not support the same major release as this
360 *major = reply.majorVersion;
361 *minor = min(reply.minorVersion, GLX_MINOR_VERSION);
367 * Determine if a \c __GLcontextModes structure has the right mojo to be
368 * converted to a \c __GLXvisualConfig to be sent to an "old" style DRI
371 #define MODE_HAS_MOJO(m) \
372 ((m)->visualID != GLX_DONT_CARE) \
373 && ((m)->sampleBuffers == 0) \
374 && ((m)->samples == 0) \
375 && (((m)->drawableType & GLX_WINDOW_BIT) != 0) \
376 && (((m)->xRenderable == GL_TRUE) \
377 || ((m)->xRenderable == GLX_DONT_CARE))
381 * Convert the FBConfigs associated with a screen into an array of
382 * \c __GLXvisualConfig structures. These structures are passed into DRI
383 * drivers that use the "old" interface. The old-style drivers had a fairly
384 * strict set of visual types that could be supported. FBConfigs that
385 * cannot be supported are not converted.
387 * \param psc Screen whose FBConfigs need to be swizzled.
390 * If memory could be allocated and at least one FBConfig could be converted
391 * to a \c __GLXvisualConfig structure, \c GL_TRUE is returned. Otherwise,
392 * \c GL_FALSE is returned.
395 * When the old DRI driver interface is no longer supported, this function
399 FillInVisuals( __GLXscreenConfigs * psc )
401 __GLcontextModes *modes;
402 int glx_visual_count;
405 glx_visual_count = 0;
406 for ( modes = psc->configs ; modes != NULL ; modes = modes->next ) {
407 if ( MODE_HAS_MOJO( modes ) ) {
412 psc->old_configs = (__GLXvisualConfig *)
413 Xmalloc( sizeof( __GLXvisualConfig ) * glx_visual_count );
414 if ( psc->old_configs == NULL ) {
418 glx_visual_count = 0;
419 for ( modes = psc->configs ; modes != NULL ; modes = modes->next ) {
420 if ( MODE_HAS_MOJO( modes ) ) {
422 #define COPY_VALUE(src_tag,dst_tag) \
423 psc->old_configs[glx_visual_count]. dst_tag = modes-> src_tag
425 COPY_VALUE( visualID, vid );
426 COPY_VALUE( rgbMode, rgba );
427 COPY_VALUE( stereoMode, stereo );
428 COPY_VALUE( doubleBufferMode, doubleBuffer );
430 psc->old_configs[glx_visual_count].class =
431 _gl_convert_to_x_visual_type( modes->visualType );
433 COPY_VALUE( level, level );
434 COPY_VALUE( numAuxBuffers, auxBuffers );
436 COPY_VALUE( redBits, redSize );
437 COPY_VALUE( greenBits, greenSize );
438 COPY_VALUE( blueBits, blueSize );
439 COPY_VALUE( alphaBits, alphaSize );
440 COPY_VALUE( rgbBits, bufferSize );
441 COPY_VALUE( accumRedBits, accumRedSize );
442 COPY_VALUE( accumGreenBits, accumGreenSize );
443 COPY_VALUE( accumBlueBits, accumBlueSize );
444 COPY_VALUE( accumAlphaBits, accumAlphaSize );
445 COPY_VALUE( depthBits, depthSize );
446 COPY_VALUE( stencilBits, stencilSize );
448 COPY_VALUE( visualRating, visualRating );
449 COPY_VALUE( transparentPixel, transparentPixel );
450 COPY_VALUE( transparentRed, transparentRed );
451 COPY_VALUE( transparentGreen, transparentGreen );
452 COPY_VALUE( transparentBlue, transparentBlue );
453 COPY_VALUE( transparentAlpha, transparentAlpha );
454 COPY_VALUE( transparentIndex, transparentIndex );
462 psc->numOldConfigs = glx_visual_count;
463 if ( glx_visual_count == 0 ) {
464 Xfree( psc->old_configs );
465 psc->old_configs = NULL;
468 return (glx_visual_count != 0);
473 __glXInitializeVisualConfigFromTags( __GLcontextModes *config, int count,
474 const INT32 *bp, Bool tagged_only,
475 Bool fbconfig_style_tags )
480 /* Copy in the first set of properties */
481 config->visualID = *bp++;
483 config->visualType = _gl_convert_from_x_visual_type( *bp++ );
485 config->rgbMode = *bp++;
487 config->redBits = *bp++;
488 config->greenBits = *bp++;
489 config->blueBits = *bp++;
490 config->alphaBits = *bp++;
491 config->accumRedBits = *bp++;
492 config->accumGreenBits = *bp++;
493 config->accumBlueBits = *bp++;
494 config->accumAlphaBits = *bp++;
496 config->doubleBufferMode = *bp++;
497 config->stereoMode = *bp++;
499 config->rgbBits = *bp++;
500 config->depthBits = *bp++;
501 config->stencilBits = *bp++;
502 config->numAuxBuffers = *bp++;
503 config->level = *bp++;
505 count -= __GLX_MIN_CONFIG_PROPS;
509 ** Additional properties may be in a list at the end
510 ** of the reply. They are in pairs of property type
511 ** and property value.
514 #define FETCH_OR_SET(tag) \
515 config-> tag = ( fbconfig_style_tags ) ? *bp++ : 1
517 for (i = 0; i < count; i += 2 ) {
520 FETCH_OR_SET( rgbMode );
522 case GLX_BUFFER_SIZE:
523 config->rgbBits = *bp++;
526 config->level = *bp++;
528 case GLX_DOUBLEBUFFER:
529 FETCH_OR_SET( doubleBufferMode );
532 FETCH_OR_SET( stereoMode );
534 case GLX_AUX_BUFFERS:
535 config->numAuxBuffers = *bp++;
538 config->redBits = *bp++;
541 config->greenBits = *bp++;
544 config->blueBits = *bp++;
547 config->alphaBits = *bp++;
550 config->depthBits = *bp++;
552 case GLX_STENCIL_SIZE:
553 config->stencilBits = *bp++;
555 case GLX_ACCUM_RED_SIZE:
556 config->accumRedBits = *bp++;
558 case GLX_ACCUM_GREEN_SIZE:
559 config->accumGreenBits = *bp++;
561 case GLX_ACCUM_BLUE_SIZE:
562 config->accumBlueBits = *bp++;
564 case GLX_ACCUM_ALPHA_SIZE:
565 config->accumAlphaBits = *bp++;
567 case GLX_VISUAL_CAVEAT_EXT:
568 config->visualRating = *bp++;
570 case GLX_X_VISUAL_TYPE:
571 config->visualType = *bp++;
573 case GLX_TRANSPARENT_TYPE:
574 config->transparentPixel = *bp++;
576 case GLX_TRANSPARENT_INDEX_VALUE:
577 config->transparentIndex = *bp++;
579 case GLX_TRANSPARENT_RED_VALUE:
580 config->transparentRed = *bp++;
582 case GLX_TRANSPARENT_GREEN_VALUE:
583 config->transparentGreen = *bp++;
585 case GLX_TRANSPARENT_BLUE_VALUE:
586 config->transparentBlue = *bp++;
588 case GLX_TRANSPARENT_ALPHA_VALUE:
589 config->transparentAlpha = *bp++;
592 config->visualID = *bp++;
594 case GLX_DRAWABLE_TYPE:
595 config->drawableType = *bp++;
597 case GLX_RENDER_TYPE:
598 config->renderType = *bp++;
600 case GLX_X_RENDERABLE:
601 config->xRenderable = *bp++;
603 case GLX_FBCONFIG_ID:
604 config->fbconfigID = *bp++;
606 case GLX_MAX_PBUFFER_WIDTH:
607 config->maxPbufferWidth = *bp++;
609 case GLX_MAX_PBUFFER_HEIGHT:
610 config->maxPbufferHeight = *bp++;
612 case GLX_MAX_PBUFFER_PIXELS:
613 config->maxPbufferPixels = *bp++;
615 case GLX_OPTIMAL_PBUFFER_WIDTH_SGIX:
616 config->optimalPbufferWidth = *bp++;
618 case GLX_OPTIMAL_PBUFFER_HEIGHT_SGIX:
619 config->optimalPbufferHeight = *bp++;
621 case GLX_VISUAL_SELECT_GROUP_SGIX:
622 config->visualSelectGroup = *bp++;
624 case GLX_SWAP_METHOD_OML:
625 config->swapMethod = *bp++;
627 case GLX_SAMPLE_BUFFERS_SGIS:
628 config->sampleBuffers = *bp++;
630 case GLX_SAMPLES_SGIS:
631 config->samples = *bp++;
641 config->renderType = (config->rgbMode) ? GLX_RGBA_BIT : GLX_COLOR_INDEX_BIT;
643 config->haveAccumBuffer = ((config->accumRedBits +
644 config->accumGreenBits +
645 config->accumBlueBits +
646 config->accumAlphaBits) > 0);
647 config->haveDepthBuffer = (config->depthBits > 0);
648 config->haveStencilBuffer = (config->stencilBits > 0);
652 #ifdef GLX_DIRECT_RENDERING
654 filter_modes( __GLcontextModes ** server_modes,
655 const __GLcontextModes * driver_modes )
657 __GLcontextModes * m;
658 __GLcontextModes ** prev_next;
659 const __GLcontextModes * check;
660 unsigned modes_count = 0;
662 if ( driver_modes == NULL ) {
663 fprintf(stderr, "libGL warning: 3D driver returned no fbconfigs.\n");
667 /* For each mode in server_modes, check to see if a matching mode exists
668 * in driver_modes. If not, then the mode is not available.
671 prev_next = server_modes;
672 for ( m = *prev_next ; m != NULL ; m = *prev_next ) {
673 GLboolean do_delete = GL_TRUE;
675 for ( check = driver_modes ; check != NULL ; check = check->next ) {
676 if ( _gl_context_modes_are_same( m, check ) ) {
677 do_delete = GL_FALSE;
682 /* The 3D has to support all the modes that match the GLX visuals
683 * sent from the X server.
685 if ( do_delete && (m->visualID != 0) ) {
686 do_delete = GL_FALSE;
688 fprintf(stderr, "libGL warning: 3D driver claims to not support "
689 "visual 0x%02x\n", m->visualID);
693 *prev_next = m->next;
696 _gl_context_modes_destroy( m );
700 prev_next = & m->next;
710 * Perform the required libGL-side initialization and call the client-side
711 * driver's \c __driCreateNewScreen function.
713 * \param dpy Display pointer.
714 * \param scrn Screen number on the display.
715 * \param psc DRI screen information.
716 * \param driDpy DRI display information.
717 * \param createNewScreen Pointer to the client-side driver's
718 * \c __driCreateNewScreen function.
719 * \returns A pointer to the \c __DRIscreenPrivate structure returned by
720 * the client-side driver on success, or \c NULL on failure.
722 * \todo This function needs to be modified to remove context-modes from the
723 * list stored in the \c __GLXscreenConfigsRec to match the list
724 * returned by the client-side driver.
727 CallCreateNewScreen(Display *dpy, int scrn, __DRIscreen *psc,
728 __DRIdisplay * driDpy,
729 CreateNewScreenFunc createNewScreen)
731 __DRIscreenPrivate *psp = NULL;
732 #ifndef GLX_USE_APPLEGL
736 __DRIversion ddx_version;
737 __DRIversion dri_version;
738 __DRIversion drm_version;
739 __DRIframebuffer framebuffer;
742 const char * err_msg;
743 const char * err_extra;
744 int api_ver = __glXGetInternalVersion();
747 dri_version.major = driDpy->private->driMajor;
748 dri_version.minor = driDpy->private->driMinor;
749 dri_version.patch = driDpy->private->driPatch;
752 err_msg = "XF86DRIOpenConnection";
755 framebuffer.dev_priv = NULL;
757 if (XF86DRIOpenConnection(dpy, scrn, &hSAREA, &BusID)) {
758 fd = drmOpen(NULL,BusID);
759 Xfree(BusID); /* No longer needed */
761 err_msg = "open DRM";
762 err_extra = strerror( -fd );
767 err_msg = "drmGetMagic";
770 if (!drmGetMagic(fd, &magic)) {
771 drmVersionPtr version = drmGetVersion(fd);
773 drm_version.major = version->version_major;
774 drm_version.minor = version->version_minor;
775 drm_version.patch = version->version_patchlevel;
776 drmFreeVersion(version);
779 drm_version.major = -1;
780 drm_version.minor = -1;
781 drm_version.patch = -1;
784 err_msg = "XF86DRIAuthConnection";
785 if (XF86DRIAuthConnection(dpy, scrn, magic)) {
789 * Get device name (like "tdfx") and the ddx version numbers.
790 * We'll check the version in each DRI driver's "createScreen"
793 err_msg = "XF86DRIGetClientDriverName";
794 if (XF86DRIGetClientDriverName(dpy, scrn,
802 /* No longer needed. */
807 * Get device-specific info. pDevPriv will point to a struct
808 * (such as DRIRADEONRec in xfree86/driver/ati/radeon_dri.h)
809 * that has information about the screen size, depth, pitch,
810 * ancilliary buffers, DRM mmap handles, etc.
812 err_msg = "XF86DRIGetDeviceInfo";
813 if (XF86DRIGetDeviceInfo(dpy, scrn,
818 &framebuffer.dev_priv_size,
819 &framebuffer.dev_priv)) {
820 framebuffer.width = DisplayWidth(dpy, scrn);
821 framebuffer.height = DisplayHeight(dpy, scrn);
824 * Map the framebuffer region.
826 status = drmMap(fd, hFB, framebuffer.size,
827 (drmAddressPtr)&framebuffer.base);
829 err_msg = "drmMap of framebuffer";
830 err_extra = strerror( -status );
834 * Map the SAREA region. Further mmap regions may be setup in
835 * each DRI driver's "createScreen" function.
837 status = drmMap(fd, hSAREA, SAREA_MAX,
840 err_msg = "drmMap of sarea";
841 err_extra = strerror( -status );
844 __GLcontextModes * driver_modes = NULL;
845 __GLXscreenConfigs *configs = psc->screenConfigs;
847 err_msg = "InitDriver";
849 psp = (*createNewScreen)(dpy, scrn,
861 filter_modes( & configs->configs,
863 _gl_context_modes_destroy( driver_modes );
874 if ( pSAREA != MAP_FAILED ) {
875 (void)drmUnmap(pSAREA, SAREA_MAX);
878 if ( framebuffer.base != MAP_FAILED ) {
879 (void)drmUnmap((drmAddress)framebuffer.base, framebuffer.size);
882 if ( framebuffer.dev_priv != NULL ) {
883 Xfree(framebuffer.dev_priv);
890 (void)XF86DRICloseConnection(dpy, scrn);
892 if ( err_extra != NULL ) {
893 fprintf(stderr, "libGL error: %s failed (%s)\n", err_msg,
897 fprintf(stderr, "libGL error: %s failed\n", err_msg );
900 fprintf(stderr, "libGL error: reverting to (slow) indirect rendering\n");
902 #endif /* !GLX_USE_APPLEGL */
906 #endif /* GLX_DIRECT_RENDERING */
910 ** Allocate the memory for the per screen configs for each screen.
911 ** If that works then fetch the per screen configs data.
913 static Bool AllocAndFetchScreenConfigs(Display *dpy, __GLXdisplayPrivate *priv)
915 xGLXGetVisualConfigsReq *req;
916 xGLXGetFBConfigsReq *fb_req;
917 xGLXVendorPrivateWithReplyReq *vpreq;
918 xGLXGetFBConfigsSGIXReq *sgi_req;
919 xGLXGetVisualConfigsReply reply;
920 __GLXscreenConfigs *psc;
921 __GLcontextModes *config;
922 GLint i, j, nprops, screens;
923 INT32 buf[__GLX_TOTAL_CONFIG], *props;
924 unsigned supported_request = 0;
928 ** First allocate memory for the array of per screen configs.
930 screens = ScreenCount(dpy);
931 psc = (__GLXscreenConfigs*) Xmalloc(screens * sizeof(__GLXscreenConfigs));
935 memset(psc, 0, screens * sizeof(__GLXscreenConfigs));
936 priv->screenConfigs = psc;
938 priv->serverGLXversion = __glXGetStringFromServer(dpy, priv->majorOpcode,
939 X_GLXQueryServerString,
941 if ( priv->serverGLXversion == NULL ) {
942 FreeScreenConfigs(priv);
946 if ( atof( priv->serverGLXversion ) >= 1.3 ) {
947 supported_request = 1;
951 ** Now fetch each screens configs structures. If a screen supports
952 ** GL (by returning a numVisuals > 0) then allocate memory for our
953 ** config structure and then fill it in.
955 for (i = 0; i < screens; i++, psc++) {
956 if ( supported_request != 1 ) {
957 psc->serverGLXexts = __glXGetStringFromServer(dpy, priv->majorOpcode,
958 X_GLXQueryServerString,
960 if ( strstr( psc->serverGLXexts, "GLX_SGIX_fbconfig" ) != NULL ) {
961 supported_request = 2;
964 supported_request = 3;
970 switch( supported_request ) {
972 GetReq(GLXGetFBConfigs,fb_req);
973 fb_req->reqType = priv->majorOpcode;
974 fb_req->glxCode = X_GLXGetFBConfigs;
979 GetReqExtra(GLXVendorPrivateWithReply,
980 sz_xGLXGetFBConfigsSGIXReq-sz_xGLXVendorPrivateWithReplyReq,vpreq);
981 sgi_req = (xGLXGetFBConfigsSGIXReq *) vpreq;
982 sgi_req->reqType = priv->majorOpcode;
983 sgi_req->glxCode = X_GLXVendorPrivateWithReply;
984 sgi_req->vendorCode = X_GLXvop_GetFBConfigsSGIX;
989 GetReq(GLXGetVisualConfigs,req);
990 req->reqType = priv->majorOpcode;
991 req->glxCode = X_GLXGetVisualConfigs;
996 if (!_XReply(dpy, (xReply*) &reply, 0, False)) {
997 /* Something is busted. Punt. */
999 FreeScreenConfigs(priv);
1004 if (!reply.numVisuals) {
1005 /* This screen does not support GL rendering */
1010 /* FIXME: Is the __GLX_MIN_CONFIG_PROPS test correct for
1013 /* Check number of properties */
1014 nprops = reply.numProps;
1015 if ((nprops < __GLX_MIN_CONFIG_PROPS) ||
1016 (nprops > __GLX_MAX_CONFIG_PROPS)) {
1017 /* Huh? Not in protocol defined limits. Punt */
1020 FreeScreenConfigs(priv);
1024 /* Allocate memory for our config structure */
1025 psc->configs = _gl_context_modes_create(reply.numVisuals,
1026 sizeof(__GLcontextModes));
1027 if (!psc->configs) {
1030 FreeScreenConfigs(priv);
1034 /* Allocate memory for the properties, if needed */
1035 if ( supported_request != 3 ) {
1039 prop_size = nprops * __GLX_SIZE_INT32;
1041 if (prop_size <= sizeof(buf)) {
1044 props = (INT32 *) Xmalloc(prop_size);
1047 /* Read each config structure and convert it into our format */
1048 config = psc->configs;
1049 for (j = 0; j < reply.numVisuals; j++) {
1050 assert( config != NULL );
1051 _XRead(dpy, (char *)props, prop_size);
1053 if ( supported_request != 3 ) {
1054 config->rgbMode = GL_TRUE;
1055 config->drawableType = GLX_WINDOW_BIT;
1058 config->drawableType = GLX_WINDOW_BIT | GLX_PIXMAP_BIT;
1061 __glXInitializeVisualConfigFromTags( config, nprops, props,
1062 (supported_request != 3),
1064 if ( config->fbconfigID == GLX_DONT_CARE ) {
1065 config->fbconfigID = config->visualID;
1068 config = config->next;
1071 Xfree((char *)props);
1075 #ifdef GLX_DIRECT_RENDERING
1076 /* Initialize per screen dynamic client GLX extensions */
1077 psc->ext_list_first_time = GL_TRUE;
1078 /* Initialize the direct rendering per screen data and functions */
1079 if (priv->driDisplay.private != NULL) {
1080 if (priv->driDisplay.createNewScreen &&
1081 priv->driDisplay.createNewScreen[i]) {
1083 psc->driScreen.screenConfigs = (void *)psc;
1084 psc->driScreen.private =
1085 CallCreateNewScreen(dpy, i, & psc->driScreen,
1087 priv->driDisplay.createNewScreen[i] );
1089 else if (priv->driDisplay.createScreen &&
1090 priv->driDisplay.createScreen[i]) {
1091 /* screen initialization (bootstrap the driver) */
1092 if ( (psc->old_configs == NULL)
1093 && !FillInVisuals(psc) ) {
1094 FreeScreenConfigs(priv);
1098 psc->driScreen.screenConfigs = (void *)psc;
1099 psc->driScreen.private =
1100 (*(priv->driDisplay.createScreen[i]))(dpy, i, &psc->driScreen,
1112 ** Initialize the client side extension code.
1114 __GLXdisplayPrivate *__glXInitialize(Display* dpy)
1116 XExtDisplayInfo *info = __glXFindDisplay(dpy);
1117 XExtData **privList, *private, *found;
1118 __GLXdisplayPrivate *dpyPriv;
1119 XEDataObject dataObj;
1122 #if defined(GLX_DIRECT_RENDERING) && defined(XTHREADS)
1124 static int firstCall = 1;
1126 /* initialize the GLX mutexes */
1127 xmutex_init(&__glXmutex);
1134 /* The one and only long long lock */
1137 if (!XextHasExtension(info)) {
1138 /* No GLX extension supported by this server. Oh well. */
1140 XMissingExtension(dpy, __glXExtensionName);
1144 /* See if a display private already exists. If so, return it */
1145 dataObj.display = dpy;
1146 privList = XEHeadOfExtensionList(dataObj);
1147 found = XFindOnExtensionList(privList, info->codes->extension);
1150 return (__GLXdisplayPrivate *) found->private_data;
1153 /* See if the versions are compatible */
1154 if (!QueryVersion(dpy, info->codes->major_opcode, &major, &minor)) {
1155 /* The client and server do not agree on versions. Punt. */
1161 ** Allocate memory for all the pieces needed for this buffer.
1163 private = (XExtData *) Xmalloc(sizeof(XExtData));
1168 dpyPriv = (__GLXdisplayPrivate *) Xmalloc(sizeof(__GLXdisplayPrivate));
1171 Xfree((char*) private);
1176 ** Init the display private and then read in the screen config
1177 ** structures from the server.
1179 dpyPriv->majorOpcode = info->codes->major_opcode;
1180 dpyPriv->majorVersion = major;
1181 dpyPriv->minorVersion = minor;
1184 dpyPriv->serverGLXvendor = 0x0;
1185 dpyPriv->serverGLXversion = 0x0;
1187 #ifdef GLX_DIRECT_RENDERING
1189 ** Initialize the direct rendering per display data and functions.
1190 ** Note: This _must_ be done before calling any other DRI routines
1191 ** (e.g., those called in AllocAndFetchScreenConfigs).
1193 if (getenv("LIBGL_ALWAYS_INDIRECT")) {
1194 /* Assinging zero here assures we'll never go direct */
1195 dpyPriv->driDisplay.private = 0;
1196 dpyPriv->driDisplay.destroyDisplay = 0;
1197 dpyPriv->driDisplay.createScreen = 0;
1200 dpyPriv->driDisplay.private =
1201 driCreateDisplay(dpy, &dpyPriv->driDisplay);
1205 if (!AllocAndFetchScreenConfigs(dpy, dpyPriv)) {
1207 Xfree((char*) dpyPriv);
1208 Xfree((char*) private);
1213 ** Fill in the private structure. This is the actual structure that
1214 ** hangs off of the Display structure. Our private structure is
1215 ** referred to by this structure. Got that?
1217 private->number = info->codes->extension;
1219 private->free_private = __glXFreeDisplayPrivate;
1220 private->private_data = (char *) dpyPriv;
1221 XAddToExtensionList(privList, private);
1223 if (dpyPriv->majorVersion == 1 && dpyPriv->minorVersion >= 1) {
1224 __glXClientInfo(dpy, dpyPriv->majorOpcode);
1232 ** Setup for sending a GLX command on dpy. Make sure the extension is
1233 ** initialized. Try to avoid calling __glXInitialize as its kinda slow.
1235 CARD8 __glXSetupForCommand(Display *dpy)
1238 __GLXdisplayPrivate *priv;
1240 /* If this thread has a current context, flush its rendering commands */
1241 gc = __glXGetCurrentContext();
1242 if (gc->currentDpy) {
1243 /* Flush rendering buffer of the current context, if any */
1244 (void) __glXFlushRenderBuffer(gc, gc->pc);
1246 if (gc->currentDpy == dpy) {
1247 /* Use opcode from gc because its right */
1249 return gc->majorOpcode;
1252 ** Have to get info about argument dpy because it might be to
1253 ** a different server
1258 /* Forced to lookup extension via the slow initialize route */
1259 priv = __glXInitialize(dpy);
1263 return priv->majorOpcode;
1267 ** Flush the drawing command transport buffer.
1269 GLubyte *__glXFlushRenderBuffer(__GLXcontext *ctx, GLubyte *pc)
1275 if (!(dpy = ctx->currentDpy)) {
1276 /* Using the dummy context */
1281 size = pc - ctx->buf;
1283 /* Send the entire buffer as an X request */
1285 GetReq(GLXRender,req);
1286 req->reqType = ctx->majorOpcode;
1287 req->glxCode = X_GLXRender;
1288 req->contextTag = ctx->currentContextTag;
1289 req->length += (size + 3) >> 2;
1290 _XSend(dpy, (char *)ctx->buf, size);
1295 /* Reset pointer and return it */
1302 * Send a portion of a GLXRenderLarge command to the server. The advantage of
1303 * this function over \c __glXSendLargeCommand is that callers can use the
1304 * data buffer in the GLX context and may be able to avoid allocating an
1305 * extra buffer. The disadvantage is the clients will have to do more
1306 * GLX protocol work (i.e., calculating \c totalRequests, etc.).
1308 * \sa __glXSendLargeCommand
1310 * \param gc GLX context
1311 * \param requestNumber Which part of the whole command is this? The first
1313 * \param totalRequests How many requests will there be?
1314 * \param data Command data.
1315 * \param dataLen Size, in bytes, of the command data.
1317 void __glXSendLargeChunk(__GLXcontext *gc, GLint requestNumber,
1318 GLint totalRequests,
1319 const GLvoid * data, GLint dataLen)
1321 Display *dpy = gc->currentDpy;
1322 xGLXRenderLargeReq *req;
1324 if ( requestNumber == 1 ) {
1328 GetReq(GLXRenderLarge,req);
1329 req->reqType = gc->majorOpcode;
1330 req->glxCode = X_GLXRenderLarge;
1331 req->contextTag = gc->currentContextTag;
1332 req->length += (dataLen + 3) >> 2;
1333 req->requestNumber = requestNumber;
1334 req->requestTotal = totalRequests;
1335 req->dataBytes = dataLen;
1336 Data(dpy, data, dataLen);
1338 if ( requestNumber == totalRequests ) {
1346 * Send a command that is too large for the GLXRender protocol request.
1348 * Send a large command, one that is too large for some reason to
1349 * send using the GLXRender protocol request. One reason to send
1350 * a large command is to avoid copying the data.
1352 * \param ctx GLX context
1353 * \param header Header data.
1354 * \param headerLen Size, in bytes, of the header data. It is assumed that
1355 * the header data will always be small enough to fit in
1356 * a single X protocol packet.
1357 * \param data Command data.
1358 * \param dataLen Size, in bytes, of the command data.
1360 void __glXSendLargeCommand(__GLXcontext *ctx,
1361 const GLvoid *header, GLint headerLen,
1362 const GLvoid *data, GLint dataLen)
1365 GLint totalRequests, requestNumber;
1368 ** Calculate the maximum amount of data can be stuffed into a single
1369 ** packet. sz_xGLXRenderReq is added because bufSize is the maximum
1370 ** packet size minus sz_xGLXRenderReq.
1372 maxSize = (ctx->bufSize + sz_xGLXRenderReq) - sz_xGLXRenderLargeReq;
1373 totalRequests = 1 + (dataLen / maxSize);
1374 if (dataLen % maxSize) totalRequests++;
1377 ** Send all of the command, except the large array, as one request.
1379 assert( headerLen <= maxSize );
1380 __glXSendLargeChunk(ctx, 1, totalRequests, header, headerLen);
1383 ** Send enough requests until the whole array is sent.
1385 for ( requestNumber = 2 ; requestNumber <= (totalRequests - 1) ; requestNumber++ ) {
1386 __glXSendLargeChunk(ctx, requestNumber, totalRequests, data, maxSize);
1387 data = (const GLvoid *) (((const GLubyte *) data) + maxSize);
1389 assert( dataLen > 0 );
1392 assert( dataLen <= maxSize );
1393 __glXSendLargeChunk(ctx, requestNumber, totalRequests, data, dataLen);
1396 /************************************************************************/
1398 GLXContext glXGetCurrentContext(void)
1400 GLXContext cx = __glXGetCurrentContext();
1402 if (cx == &dummyContext) {
1409 GLXDrawable glXGetCurrentDrawable(void)
1411 GLXContext gc = __glXGetCurrentContext();
1412 return gc->currentDrawable;
1416 /************************************************************************/
1418 #ifdef GLX_DIRECT_RENDERING
1419 /* Return the DRI per screen structure */
1420 __DRIscreen *__glXFindDRIScreen(__DRInativeDisplay *dpy, int scrn)
1422 __DRIscreen *pDRIScreen = NULL;
1423 XExtDisplayInfo *info = __glXFindDisplay(dpy);
1424 XExtData **privList, *found;
1425 __GLXdisplayPrivate *dpyPriv;
1426 XEDataObject dataObj;
1429 dataObj.display = dpy;
1430 privList = XEHeadOfExtensionList(dataObj);
1431 found = XFindOnExtensionList(privList, info->codes->extension);
1435 dpyPriv = (__GLXdisplayPrivate *)found->private_data;
1436 pDRIScreen = &dpyPriv->screenConfigs[scrn].driScreen;
1443 /************************************************************************/
1445 static Bool SendMakeCurrentRequest( Display *dpy, CARD8 opcode,
1446 GLXContextID gc, GLXContextTag old_gc, GLXDrawable draw, GLXDrawable read,
1447 xGLXMakeCurrentReply * reply );
1450 * Sends a GLX protocol message to the specified display to make the context
1451 * and the drawables current.
1453 * \param dpy Display to send the message to.
1454 * \param opcode Major opcode value for the display.
1455 * \param gc_id Context tag for the context to be made current.
1456 * \param draw Drawable ID for the "draw" drawable.
1457 * \param read Drawable ID for the "read" drawable.
1458 * \param reply Space to store the X-server's reply.
1461 * This function assumes that \c dpy is locked with \c LockDisplay on entry.
1463 static Bool SendMakeCurrentRequest( Display *dpy, CARD8 opcode,
1464 GLXContextID gc_id, GLXContextTag gc_tag,
1465 GLXDrawable draw, GLXDrawable read,
1466 xGLXMakeCurrentReply * reply )
1468 if ( draw == read ) {
1469 xGLXMakeCurrentReq *req;
1471 GetReq(GLXMakeCurrent,req);
1472 req->reqType = opcode;
1473 req->glxCode = X_GLXMakeCurrent;
1474 req->drawable = draw;
1475 req->context = gc_id;
1476 req->oldContextTag = gc_tag;
1479 __GLXdisplayPrivate *priv = __glXInitialize(dpy);
1481 /* If the server can support the GLX 1.3 version, we should
1482 * perfer that. Not only that, some servers support GLX 1.3 but
1483 * not the SGI extension.
1486 if ( (priv->majorVersion > 1) || (priv->minorVersion >= 3) ) {
1487 xGLXMakeContextCurrentReq *req;
1489 GetReq(GLXMakeContextCurrent,req);
1490 req->reqType = opcode;
1491 req->glxCode = X_GLXMakeContextCurrent;
1492 req->drawable = draw;
1493 req->readdrawable = read;
1494 req->context = gc_id;
1495 req->oldContextTag = gc_tag;
1498 xGLXVendorPrivateWithReplyReq *vpreq;
1499 xGLXMakeCurrentReadSGIReq *req;
1501 GetReqExtra(GLXVendorPrivateWithReply,
1502 sz_xGLXMakeCurrentReadSGIReq-sz_xGLXVendorPrivateWithReplyReq,vpreq);
1503 req = (xGLXMakeCurrentReadSGIReq *)vpreq;
1504 req->reqType = opcode;
1505 req->glxCode = X_GLXVendorPrivateWithReply;
1506 req->vendorCode = X_GLXvop_MakeCurrentReadSGI;
1507 req->drawable = draw;
1508 req->readable = read;
1509 req->context = gc_id;
1510 req->oldContextTag = gc_tag;
1514 return _XReply(dpy, (xReply*) reply, 0, False);
1518 static Bool BindContextWrapper( Display *dpy, GLXContext gc,
1519 GLXDrawable draw, GLXDrawable read )
1521 #ifdef GLX_DIRECT_RENDERING
1522 if ( gc->driContext.bindContext3 != NULL ) {
1523 return (*gc->driContext.bindContext3)(dpy, gc->screen, draw, read,
1527 return (*gc->driContext.bindContext2)(dpy, gc->screen, draw, read,
1536 static Bool UnbindContextWrapper( Display *dpy, GLXContext gc )
1538 #ifdef GLX_DIRECT_RENDERING
1539 if ( gc->driContext.unbindContext3 != NULL ) {
1540 return (*gc->driContext.unbindContext3)(dpy, gc->screen,
1541 gc->currentDrawable,
1542 gc->currentReadable,
1546 return (*gc->driContext.unbindContext2)(dpy, gc->screen,
1547 gc->currentDrawable,
1548 gc->currentReadable, gc);
1557 ** Make a particular context current.
1558 ** NOTE: this is in this file so that it can access dummyContext.
1560 USED static Bool MakeContextCurrent(Display *dpy, GLXDrawable draw,
1561 GLXDrawable read, GLXContext gc)
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 PUBLIC Bool GLX_PREFIX(glXMakeCurrent)(Display *dpy, GLXDrawable draw,
1781 return MakeContextCurrent( dpy, draw, draw, gc );
1784 PUBLIC GLX_ALIAS(Bool, glXMakeCurrentReadSGI,
1785 (Display *dpy, GLXDrawable d, GLXDrawable r, GLXContext ctx),
1786 (dpy, d, r, ctx), MakeContextCurrent)
1788 PUBLIC GLX_ALIAS(Bool, glXMakeContextCurrent,
1789 (Display *dpy, GLXDrawable d, GLXDrawable r, GLXContext ctx),
1790 (dpy, d, r, ctx), MakeContextCurrent)
1794 void __glXDumpDrawBuffer(__GLXcontext *ctx)
1796 GLubyte *p = ctx->buf;
1797 GLubyte *end = ctx->pc;
1798 GLushort opcode, length;
1802 opcode = *((GLushort*) p);
1803 length = *((GLushort*) (p + 2));
1804 printf("%2x: %5d: ", opcode, length);
1807 while (length > 0) {
1808 printf("%08x ", *((unsigned *) p));
1817 #ifdef USE_SPARC_ASM
1819 * Used only when we are sparc, using sparc assembler.
1824 _glx_mesa_init_sparc_glapi_relocs(void)
1826 unsigned int *insn_ptr, *end_ptr;
1827 unsigned long disp_addr;
1829 insn_ptr = &_mesa_sparc_glapi_begin;
1830 end_ptr = &_mesa_sparc_glapi_end;
1831 disp_addr = (unsigned long) &_glapi_Dispatch;
1834 * Verbatim from Mesa sparc.c. It's needed because there doesn't
1835 * seem to be a better way to do this:
1837 * UNCONDITIONAL_JUMP ( (*_glapi_Dispatch) + entry_offset )
1839 * This code is patching in the ADDRESS of the pointer to the
1840 * dispatch table. Hence, it must be called exactly once, because
1841 * that address is not going to change.
1843 * What it points to can change, but Mesa (and hence, we) assume
1844 * that there is only one pointer.
1847 while (insn_ptr < end_ptr) {
1848 #if ( defined(__sparc_v9__) && ( !defined(__linux__) || defined(__linux_64__) ) )
1850 This code patches for 64-bit addresses. This had better
1851 not happen for Sparc/Linux, no matter what architecture we
1852 are building for. So, don't do this.
1854 The 'defined(__linux_64__)' is used here as a placeholder for
1855 when we do do 64-bit usermode on sparc linux.
1857 insn_ptr[0] |= (disp_addr >> (32 + 10));
1858 insn_ptr[1] |= ((disp_addr & 0xffffffff) >> 10);
1859 __glapi_sparc_icache_flush(&insn_ptr[0]);
1860 insn_ptr[2] |= ((disp_addr >> 32) & ((1 << 10) - 1));
1861 insn_ptr[3] |= (disp_addr & ((1 << 10) - 1));
1862 __glapi_sparc_icache_flush(&insn_ptr[2]);
1865 insn_ptr[0] |= (disp_addr >> 10);
1866 insn_ptr[1] |= (disp_addr & ((1 << 10) - 1));
1867 __glapi_sparc_icache_flush(&insn_ptr[0]);
1872 #endif /* sparc ASM in use */