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 * GLX protocol interface boot-strap code.
35 * Direct rendering support added by Precision Insight, Inc.
37 * \author Kevin E. Martin <kevin@precisioninsight.com>
41 #include "glxclient.h"
42 #include <X11/extensions/Xext.h>
43 #include <X11/extensions/extutil.h>
44 #include <X11/extensions/dri2proto.h>
45 #ifdef GLX_USE_APPLEGL
46 #include "apple_glx.h"
47 #include "apple_visual.h"
49 #include "glxextensions.h"
50 #include "glcontextmodes.h"
53 #include <X11/Xlib-xcb.h>
60 void __glXDumpDrawBuffer(__GLXcontext
* ctx
);
64 ** You can set this cell to 1 to force the gl drawing stuff to be
65 ** one command per packet
67 _X_HIDDEN
int __glXDebug
= 0;
69 /* Extension required boiler plate */
71 static const char __glXExtensionName
[] = GLX_EXTENSION_NAME
;
72 static __GLXdisplayPrivate
*glx_displays
;
74 static /* const */ char *error_list
[] = {
80 "GLXBadCurrentWindow",
81 "GLXBadRenderRequest",
83 "GLXUnsupportedPrivateRequest",
86 "GLXBadCurrentDrawable",
90 #ifdef GLX_USE_APPLEGL
91 static char *__glXErrorString(Display
*dpy
, int code
, XExtCodes
*codes
,
96 XEXT_GENERATE_ERROR_STRING(__glXErrorString
, __glXExtensionName
,
97 __GLX_NUMBER_ERRORS
, error_list
)
100 * GLX events are a bit funky. We don't stuff the X event code into
101 * our user exposed (via XNextEvent) structure. Instead we use the GLX
102 * private event code namespace (and hope it doesn't conflict). Clients
103 * have to know that bit 15 in the event type field means they're getting
104 * a GLX event, and then handle the various sub-event types there, rather
105 * than simply checking the event code and handling it directly.
109 __glXWireToEvent(Display
*dpy
, XEvent
*event
, xEvent
*wire
)
111 __GLXdisplayPrivate
*glx_dpy
= __glXInitialize(dpy
);
116 switch ((wire
->u
.u
.type
& 0x7f) - glx_dpy
->codes
->first_event
) {
117 case GLX_PbufferClobber
:
119 GLXPbufferClobberEvent
*aevent
= (GLXPbufferClobberEvent
*)event
;
120 xGLXPbufferClobberEvent
*awire
= (xGLXPbufferClobberEvent
*)wire
;
121 aevent
->event_type
= awire
->type
;
122 aevent
->serial
= awire
->sequenceNumber
;
123 aevent
->event_type
= awire
->event_type
;
124 aevent
->draw_type
= awire
->draw_type
;
125 aevent
->drawable
= awire
->drawable
;
126 aevent
->buffer_mask
= awire
->buffer_mask
;
127 aevent
->aux_buffer
= awire
->aux_buffer
;
128 aevent
->x
= awire
->x
;
129 aevent
->y
= awire
->y
;
130 aevent
->width
= awire
->width
;
131 aevent
->height
= awire
->height
;
132 aevent
->count
= awire
->count
;
135 /* No easy symbol to test for this, as GLX_BufferSwapComplete is
136 * defined in the local glx.h header, but the
137 * xGLXBufferSwapComplete typedef is only available in new versions
138 * of the external glxproto.h header, which doesn't have any
139 * testable versioning define.
141 * I'll use the related DRI2 define, in the hope that we won't
142 * receive these events unless we know how to ask for them:
144 #ifdef X_DRI2SwapBuffers
145 case GLX_BufferSwapComplete
:
147 GLXBufferSwapComplete
*aevent
= (GLXBufferSwapComplete
*)event
;
148 xGLXBufferSwapComplete
*awire
= (xGLXBufferSwapComplete
*)wire
;
149 aevent
->event_type
= awire
->event_type
;
150 aevent
->drawable
= awire
->drawable
;
151 aevent
->ust
= ((CARD64
)awire
->ust_hi
<< 32) | awire
->ust_lo
;
152 aevent
->msc
= ((CARD64
)awire
->msc_hi
<< 32) | awire
->msc_lo
;
153 aevent
->sbc
= ((CARD64
)awire
->sbc_hi
<< 32) | awire
->sbc_lo
;
158 /* client doesn't support server event */
165 /* We don't actually support this. It doesn't make sense for clients to
166 * send each other GLX events.
169 __glXEventToWire(Display
*dpy
, XEvent
*event
, xEvent
*wire
)
171 __GLXdisplayPrivate
*glx_dpy
= __glXInitialize(dpy
);
176 switch (event
->type
) {
181 case GLX_EXCHANGE_COMPLETE_INTEL
:
183 case GLX_COPY_COMPLETE_INTEL
:
185 case GLX_FLIP_COMPLETE_INTEL
:
188 /* client doesn't support server event */
195 /************************************************************************/
197 ** Free the per screen configs data as well as the array of
198 ** __glXScreenConfigs.
201 FreeScreenConfigs(__GLXdisplayPrivate
* priv
)
203 __GLXscreenConfigs
*psc
;
206 /* Free screen configuration information */
207 screens
= ScreenCount(priv
->dpy
);
208 for (i
= 0; i
< screens
; i
++) {
209 psc
= priv
->screenConfigs
[i
];
211 _gl_context_modes_destroy(psc
->configs
);
212 if (psc
->effectiveGLXexts
)
213 Xfree(psc
->effectiveGLXexts
);
214 psc
->configs
= NULL
; /* NOTE: just for paranoia */
217 _gl_context_modes_destroy(psc
->visuals
);
218 psc
->visuals
= NULL
; /* NOTE: just for paranoia */
220 Xfree((char *) psc
->serverGLXexts
);
222 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
223 if (psc
->driScreen
) {
224 psc
->driScreen
->destroyScreen(psc
);
232 XFree((char *) priv
->screenConfigs
);
233 priv
->screenConfigs
= NULL
;
237 ** Release the private memory referred to in a display private
238 ** structure. The caller will free the extension structure.
241 __glXCloseDisplay(Display
* dpy
, XExtCodes
* codes
)
243 __GLXdisplayPrivate
*priv
, **prev
;
246 _XLockMutex(_Xglobal_lock
);
247 prev
= &glx_displays
;
248 for (priv
= glx_displays
; priv
; prev
= &priv
->next
, priv
= priv
->next
) {
249 if (priv
->dpy
== dpy
) {
250 (*prev
)->next
= priv
->next
;
254 _XUnlockMutex(_Xglobal_lock
);
256 gc
= __glXGetCurrentContext();
257 if (dpy
== gc
->currentDpy
) {
258 gc
->vtable
->destroy(gc
);
259 __glXSetCurrentContextNull();
262 FreeScreenConfigs(priv
);
263 if (priv
->serverGLXvendor
)
264 Xfree((char *) priv
->serverGLXvendor
);
265 if (priv
->serverGLXversion
)
266 Xfree((char *) priv
->serverGLXversion
);
268 __glxHashDestroy(priv
->drawHash
);
270 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
271 /* Free the direct rendering per display data */
272 if (priv
->driswDisplay
)
273 (*priv
->driswDisplay
->destroyDisplay
) (priv
->driswDisplay
);
274 priv
->driswDisplay
= NULL
;
276 if (priv
->driDisplay
)
277 (*priv
->driDisplay
->destroyDisplay
) (priv
->driDisplay
);
278 priv
->driDisplay
= NULL
;
280 if (priv
->dri2Display
)
281 (*priv
->dri2Display
->destroyDisplay
) (priv
->dri2Display
);
282 priv
->dri2Display
= NULL
;
285 Xfree((char *) priv
);
291 ** Query the version of the GLX extension. This procedure works even if
292 ** the client extension is not completely set up.
295 QueryVersion(Display
* dpy
, int opcode
, int *major
, int *minor
)
298 xcb_connection_t
*c
= XGetXCBConnection(dpy
);
299 xcb_glx_query_version_reply_t
*reply
= xcb_glx_query_version_reply(c
,
300 xcb_glx_query_version
306 if (reply
->major_version
!= GLX_MAJOR_VERSION
) {
310 *major
= reply
->major_version
;
311 *minor
= min(reply
->minor_version
, GLX_MINOR_VERSION
);
315 xGLXQueryVersionReq
*req
;
316 xGLXQueryVersionReply reply
;
318 /* Send the glXQueryVersion request */
320 GetReq(GLXQueryVersion
, req
);
321 req
->reqType
= opcode
;
322 req
->glxCode
= X_GLXQueryVersion
;
323 req
->majorVersion
= GLX_MAJOR_VERSION
;
324 req
->minorVersion
= GLX_MINOR_VERSION
;
325 _XReply(dpy
, (xReply
*) & reply
, 0, False
);
329 if (reply
.majorVersion
!= GLX_MAJOR_VERSION
) {
331 ** The server does not support the same major release as this
336 *major
= reply
.majorVersion
;
337 *minor
= min(reply
.minorVersion
, GLX_MINOR_VERSION
);
343 * We don't want to enable this GLX_OML_swap_method in glxext.h,
344 * because we can't support it. The X server writes it out though,
345 * so we should handle it somehow, to avoid false warnings.
348 IGNORE_GLX_SWAP_METHOD_OML
= 0x8060
353 * getVisualConfigs uses the !tagged_only path.
354 * getFBConfigs uses the tagged_only path.
357 __glXInitializeVisualConfigFromTags(__GLcontextModes
* config
, int count
,
358 const INT32
* bp
, Bool tagged_only
,
359 Bool fbconfig_style_tags
)
364 /* Copy in the first set of properties */
365 config
->visualID
= *bp
++;
367 config
->visualType
= _gl_convert_from_x_visual_type(*bp
++);
369 config
->rgbMode
= *bp
++;
371 config
->redBits
= *bp
++;
372 config
->greenBits
= *bp
++;
373 config
->blueBits
= *bp
++;
374 config
->alphaBits
= *bp
++;
375 config
->accumRedBits
= *bp
++;
376 config
->accumGreenBits
= *bp
++;
377 config
->accumBlueBits
= *bp
++;
378 config
->accumAlphaBits
= *bp
++;
380 config
->doubleBufferMode
= *bp
++;
381 config
->stereoMode
= *bp
++;
383 config
->rgbBits
= *bp
++;
384 config
->depthBits
= *bp
++;
385 config
->stencilBits
= *bp
++;
386 config
->numAuxBuffers
= *bp
++;
387 config
->level
= *bp
++;
389 #ifdef GLX_USE_APPLEGL
390 /* AppleSGLX supports pixmap and pbuffers with all config. */
391 config
->drawableType
= GLX_WINDOW_BIT
| GLX_PIXMAP_BIT
| GLX_PBUFFER_BIT
;
392 /* Unfortunately this can create an ABI compatibility problem. */
395 count
-= __GLX_MIN_CONFIG_PROPS
;
400 ** Additional properties may be in a list at the end
401 ** of the reply. They are in pairs of property type
402 ** and property value.
405 #define FETCH_OR_SET(tag) \
406 config-> tag = ( fbconfig_style_tags ) ? *bp++ : 1
408 for (i
= 0; i
< count
; i
+= 2) {
409 long int tag
= *bp
++;
413 FETCH_OR_SET(rgbMode
);
415 case GLX_BUFFER_SIZE
:
416 config
->rgbBits
= *bp
++;
419 config
->level
= *bp
++;
421 case GLX_DOUBLEBUFFER
:
422 FETCH_OR_SET(doubleBufferMode
);
425 FETCH_OR_SET(stereoMode
);
427 case GLX_AUX_BUFFERS
:
428 config
->numAuxBuffers
= *bp
++;
431 config
->redBits
= *bp
++;
434 config
->greenBits
= *bp
++;
437 config
->blueBits
= *bp
++;
440 config
->alphaBits
= *bp
++;
443 config
->depthBits
= *bp
++;
445 case GLX_STENCIL_SIZE
:
446 config
->stencilBits
= *bp
++;
448 case GLX_ACCUM_RED_SIZE
:
449 config
->accumRedBits
= *bp
++;
451 case GLX_ACCUM_GREEN_SIZE
:
452 config
->accumGreenBits
= *bp
++;
454 case GLX_ACCUM_BLUE_SIZE
:
455 config
->accumBlueBits
= *bp
++;
457 case GLX_ACCUM_ALPHA_SIZE
:
458 config
->accumAlphaBits
= *bp
++;
460 case GLX_VISUAL_CAVEAT_EXT
:
461 config
->visualRating
= *bp
++;
463 case GLX_X_VISUAL_TYPE
:
464 config
->visualType
= *bp
++;
466 case GLX_TRANSPARENT_TYPE
:
467 config
->transparentPixel
= *bp
++;
469 case GLX_TRANSPARENT_INDEX_VALUE
:
470 config
->transparentIndex
= *bp
++;
472 case GLX_TRANSPARENT_RED_VALUE
:
473 config
->transparentRed
= *bp
++;
475 case GLX_TRANSPARENT_GREEN_VALUE
:
476 config
->transparentGreen
= *bp
++;
478 case GLX_TRANSPARENT_BLUE_VALUE
:
479 config
->transparentBlue
= *bp
++;
481 case GLX_TRANSPARENT_ALPHA_VALUE
:
482 config
->transparentAlpha
= *bp
++;
485 config
->visualID
= *bp
++;
487 case GLX_DRAWABLE_TYPE
:
488 config
->drawableType
= *bp
++;
489 #ifdef GLX_USE_APPLEGL
490 /* AppleSGLX supports pixmap and pbuffers with all config. */
491 config
->drawableType
|= GLX_WINDOW_BIT
| GLX_PIXMAP_BIT
| GLX_PBUFFER_BIT
;
494 case GLX_RENDER_TYPE
:
495 config
->renderType
= *bp
++;
497 case GLX_X_RENDERABLE
:
498 config
->xRenderable
= *bp
++;
500 case GLX_FBCONFIG_ID
:
501 config
->fbconfigID
= *bp
++;
503 case GLX_MAX_PBUFFER_WIDTH
:
504 config
->maxPbufferWidth
= *bp
++;
506 case GLX_MAX_PBUFFER_HEIGHT
:
507 config
->maxPbufferHeight
= *bp
++;
509 case GLX_MAX_PBUFFER_PIXELS
:
510 config
->maxPbufferPixels
= *bp
++;
512 #ifndef GLX_USE_APPLEGL
513 case GLX_OPTIMAL_PBUFFER_WIDTH_SGIX
:
514 config
->optimalPbufferWidth
= *bp
++;
516 case GLX_OPTIMAL_PBUFFER_HEIGHT_SGIX
:
517 config
->optimalPbufferHeight
= *bp
++;
519 case GLX_VISUAL_SELECT_GROUP_SGIX
:
520 config
->visualSelectGroup
= *bp
++;
522 case GLX_SWAP_METHOD_OML
:
523 config
->swapMethod
= *bp
++;
526 case GLX_SAMPLE_BUFFERS_SGIS
:
527 config
->sampleBuffers
= *bp
++;
529 case GLX_SAMPLES_SGIS
:
530 config
->samples
= *bp
++;
532 #ifdef GLX_USE_APPLEGL
533 case IGNORE_GLX_SWAP_METHOD_OML
:
534 /* We ignore this tag. See the comment above this function. */
538 case GLX_BIND_TO_TEXTURE_RGB_EXT
:
539 config
->bindToTextureRgb
= *bp
++;
541 case GLX_BIND_TO_TEXTURE_RGBA_EXT
:
542 config
->bindToTextureRgba
= *bp
++;
544 case GLX_BIND_TO_MIPMAP_TEXTURE_EXT
:
545 config
->bindToMipmapTexture
= *bp
++;
547 case GLX_BIND_TO_TEXTURE_TARGETS_EXT
:
548 config
->bindToTextureTargets
= *bp
++;
550 case GLX_Y_INVERTED_EXT
:
551 config
->yInverted
= *bp
++;
555 if (fbconfig_style_tags
)
562 if(getenv("LIBGL_DIAGNOSTIC")) {
563 long int tagvalue
= *bp
++;
564 fprintf(stderr
, "WARNING: unknown GLX tag from server: "
565 "tag 0x%lx value 0x%lx\n", tag
, tagvalue
);
567 /* Ignore the unrecognized tag's value */
575 (config
->rgbMode
) ? GLX_RGBA_BIT
: GLX_COLOR_INDEX_BIT
;
578 static __GLcontextModes
*
579 createConfigsFromProperties(Display
* dpy
, int nvisuals
, int nprops
,
580 int screen
, GLboolean tagged_only
)
582 INT32 buf
[__GLX_TOTAL_CONFIG
], *props
;
584 __GLcontextModes
*modes
, *m
;
590 /* FIXME: Is the __GLX_MIN_CONFIG_PROPS test correct for FBconfigs? */
592 /* Check number of properties */
593 if (nprops
< __GLX_MIN_CONFIG_PROPS
|| nprops
> __GLX_MAX_CONFIG_PROPS
)
596 /* Allocate memory for our config structure */
597 modes
= _gl_context_modes_create(nvisuals
, sizeof(__GLcontextModes
));
601 prop_size
= nprops
* __GLX_SIZE_INT32
;
602 if (prop_size
<= sizeof(buf
))
605 props
= Xmalloc(prop_size
);
607 /* Read each config structure and convert it into our format */
609 for (i
= 0; i
< nvisuals
; i
++) {
610 _XRead(dpy
, (char *) props
, prop_size
);
611 #ifdef GLX_USE_APPLEGL
612 /* Older X servers don't send this so we default it here. */
613 m
->drawableType
= GLX_WINDOW_BIT
;
616 * The XQuartz 2.3.2.1 X server doesn't set this properly, so
617 * set the proper bits here.
618 * AppleSGLX supports windows, pixmaps, and pbuffers with all config.
620 m
->drawableType
= GLX_WINDOW_BIT
| GLX_PIXMAP_BIT
| GLX_PBUFFER_BIT
;
622 __glXInitializeVisualConfigFromTags(m
, nprops
, props
,
623 tagged_only
, GL_TRUE
);
635 getVisualConfigs(__GLXscreenConfigs
*psc
,
636 __GLXdisplayPrivate
*priv
, int screen
)
638 xGLXGetVisualConfigsReq
*req
;
639 xGLXGetVisualConfigsReply reply
;
640 Display
*dpy
= priv
->dpy
;
645 GetReq(GLXGetVisualConfigs
, req
);
646 req
->reqType
= priv
->majorOpcode
;
647 req
->glxCode
= X_GLXGetVisualConfigs
;
648 req
->screen
= screen
;
650 if (!_XReply(dpy
, (xReply
*) & reply
, 0, False
))
653 psc
->visuals
= createConfigsFromProperties(dpy
,
660 return psc
->visuals
!= NULL
;
664 getFBConfigs(__GLXscreenConfigs
*psc
, __GLXdisplayPrivate
*priv
, int screen
)
666 xGLXGetFBConfigsReq
*fb_req
;
667 xGLXGetFBConfigsSGIXReq
*sgi_req
;
668 xGLXVendorPrivateWithReplyReq
*vpreq
;
669 xGLXGetFBConfigsReply reply
;
670 Display
*dpy
= priv
->dpy
;
673 __glXQueryServerString(dpy
, priv
->majorOpcode
, screen
, GLX_EXTENSIONS
);
678 if (atof(priv
->serverGLXversion
) >= 1.3) {
679 GetReq(GLXGetFBConfigs
, fb_req
);
680 fb_req
->reqType
= priv
->majorOpcode
;
681 fb_req
->glxCode
= X_GLXGetFBConfigs
;
682 fb_req
->screen
= screen
;
684 else if (strstr(psc
->serverGLXexts
, "GLX_SGIX_fbconfig") != NULL
) {
685 GetReqExtra(GLXVendorPrivateWithReply
,
686 sz_xGLXGetFBConfigsSGIXReq
+
687 sz_xGLXVendorPrivateWithReplyReq
, vpreq
);
688 sgi_req
= (xGLXGetFBConfigsSGIXReq
*) vpreq
;
689 sgi_req
->reqType
= priv
->majorOpcode
;
690 sgi_req
->glxCode
= X_GLXVendorPrivateWithReply
;
691 sgi_req
->vendorCode
= X_GLXvop_GetFBConfigsSGIX
;
692 sgi_req
->screen
= screen
;
697 if (!_XReply(dpy
, (xReply
*) & reply
, 0, False
))
700 psc
->configs
= createConfigsFromProperties(dpy
,
702 reply
.numAttribs
* 2,
707 return psc
->configs
!= NULL
;
711 glx_screen_init(__GLXscreenConfigs
*psc
,
712 int screen
, __GLXdisplayPrivate
* priv
)
714 /* Initialize per screen dynamic client GLX extensions */
715 psc
->ext_list_first_time
= GL_TRUE
;
717 psc
->dpy
= priv
->dpy
;
720 getVisualConfigs(psc
, priv
, screen
);
721 getFBConfigs(psc
, priv
, screen
);
727 ** Allocate the memory for the per screen configs for each screen.
728 ** If that works then fetch the per screen configs data.
731 AllocAndFetchScreenConfigs(Display
* dpy
, __GLXdisplayPrivate
* priv
)
733 __GLXscreenConfigs
*psc
;
737 ** First allocate memory for the array of per screen configs.
739 screens
= ScreenCount(dpy
);
740 priv
->screenConfigs
= Xmalloc(screens
* sizeof *priv
->screenConfigs
);
741 if (!priv
->screenConfigs
)
744 priv
->serverGLXversion
=
745 __glXQueryServerString(dpy
, priv
->majorOpcode
, 0, GLX_VERSION
);
746 if (priv
->serverGLXversion
== NULL
) {
747 FreeScreenConfigs(priv
);
751 for (i
= 0; i
< screens
; i
++, psc
++) {
753 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
754 if (priv
->dri2Display
)
755 psc
= (*priv
->dri2Display
->createScreen
) (i
, priv
);
756 if (psc
== NULL
&& priv
->driDisplay
)
757 psc
= (*priv
->driDisplay
->createScreen
) (i
, priv
);
758 if (psc
== NULL
&& priv
->driswDisplay
)
759 psc
= (*priv
->driswDisplay
->createScreen
) (i
, priv
);
762 psc
= indirect_create_screen(i
, priv
);
763 priv
->screenConfigs
[i
] = psc
;
770 ** Initialize the client side extension code.
772 _X_HIDDEN __GLXdisplayPrivate
*
773 __glXInitialize(Display
* dpy
)
775 __GLXdisplayPrivate
*dpyPriv
;
776 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
777 Bool glx_direct
, glx_accel
;
781 _XLockMutex(_Xglobal_lock
);
783 for (dpyPriv
= glx_displays
; dpyPriv
; dpyPriv
= dpyPriv
->next
) {
784 if (dpyPriv
->dpy
== dpy
) {
785 _XUnlockMutex(_Xglobal_lock
);
790 dpyPriv
= Xcalloc(1, sizeof *dpyPriv
);
794 dpyPriv
->codes
= XInitExtension(dpy
, __glXExtensionName
);
795 if (!dpyPriv
->codes
) {
797 _XUnlockMutex(_Xglobal_lock
);
802 dpyPriv
->majorOpcode
= dpyPriv
->codes
->major_opcode
;
803 dpyPriv
->serverGLXvendor
= 0x0;
804 dpyPriv
->serverGLXversion
= 0x0;
806 /* See if the versions are compatible */
807 if (!QueryVersion(dpy
, dpyPriv
->majorOpcode
,
808 &dpyPriv
->majorVersion
, &dpyPriv
->minorVersion
)) {
810 _XUnlockMutex(_Xglobal_lock
);
814 for (i
= 0; i
< __GLX_NUMBER_EVENTS
; i
++) {
815 XESetWireToEvent(dpy
, dpyPriv
->codes
->first_event
+ i
, __glXWireToEvent
);
816 XESetEventToWire(dpy
, dpyPriv
->codes
->first_event
+ i
, __glXEventToWire
);
819 XESetCloseDisplay(dpy
, dpyPriv
->codes
->extension
, __glXCloseDisplay
);
820 XESetErrorString (dpy
, dpyPriv
->codes
->extension
,__glXErrorString
);
822 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
823 glx_direct
= (getenv("LIBGL_ALWAYS_INDIRECT") == NULL
);
824 glx_accel
= (getenv("LIBGL_ALWAYS_SOFTWARE") == NULL
);
826 dpyPriv
->drawHash
= __glxHashCreate();
829 ** Initialize the direct rendering per display data and functions.
830 ** Note: This _must_ be done before calling any other DRI routines
831 ** (e.g., those called in AllocAndFetchScreenConfigs).
833 if (glx_direct
&& glx_accel
) {
834 dpyPriv
->dri2Display
= dri2CreateDisplay(dpy
);
835 dpyPriv
->driDisplay
= driCreateDisplay(dpy
);
838 dpyPriv
->driswDisplay
= driswCreateDisplay(dpy
);
841 #ifdef GLX_USE_APPLEGL
842 if (apple_init_glx(dpy
)) {
847 if (!AllocAndFetchScreenConfigs(dpy
, dpyPriv
)) {
852 if (dpyPriv
->majorVersion
== 1 && dpyPriv
->minorVersion
>= 1)
853 __glXClientInfo(dpy
, dpyPriv
->majorOpcode
);
855 dpyPriv
->next
= glx_displays
;
856 glx_displays
= dpyPriv
;
858 _XUnlockMutex(_Xglobal_lock
);
864 ** Setup for sending a GLX command on dpy. Make sure the extension is
865 ** initialized. Try to avoid calling __glXInitialize as its kinda slow.
868 __glXSetupForCommand(Display
* dpy
)
871 __GLXdisplayPrivate
*priv
;
873 /* If this thread has a current context, flush its rendering commands */
874 gc
= __glXGetCurrentContext();
875 if (gc
->currentDpy
) {
876 /* Flush rendering buffer of the current context, if any */
877 (void) __glXFlushRenderBuffer(gc
, gc
->pc
);
879 if (gc
->currentDpy
== dpy
) {
880 /* Use opcode from gc because its right */
881 return gc
->majorOpcode
;
885 ** Have to get info about argument dpy because it might be to
886 ** a different server
891 /* Forced to lookup extension via the slow initialize route */
892 priv
= __glXInitialize(dpy
);
896 return priv
->majorOpcode
;
900 * Flush the drawing command transport buffer.
902 * \param ctx Context whose transport buffer is to be flushed.
903 * \param pc Pointer to first unused buffer location.
906 * Modify this function to use \c ctx->pc instead of the explicit
910 __glXFlushRenderBuffer(__GLXcontext
* ctx
, GLubyte
* pc
)
912 Display
*const dpy
= ctx
->currentDpy
;
914 xcb_connection_t
*c
= XGetXCBConnection(dpy
);
918 const GLint size
= pc
- ctx
->buf
;
920 if ((dpy
!= NULL
) && (size
> 0)) {
922 xcb_glx_render(c
, ctx
->currentContextTag
, size
,
923 (const uint8_t *) ctx
->buf
);
925 /* Send the entire buffer as an X request */
927 GetReq(GLXRender
, req
);
928 req
->reqType
= ctx
->majorOpcode
;
929 req
->glxCode
= X_GLXRender
;
930 req
->contextTag
= ctx
->currentContextTag
;
931 req
->length
+= (size
+ 3) >> 2;
932 _XSend(dpy
, (char *) ctx
->buf
, size
);
938 /* Reset pointer and return it */
945 * Send a portion of a GLXRenderLarge command to the server. The advantage of
946 * this function over \c __glXSendLargeCommand is that callers can use the
947 * data buffer in the GLX context and may be able to avoid allocating an
948 * extra buffer. The disadvantage is the clients will have to do more
949 * GLX protocol work (i.e., calculating \c totalRequests, etc.).
951 * \sa __glXSendLargeCommand
953 * \param gc GLX context
954 * \param requestNumber Which part of the whole command is this? The first
956 * \param totalRequests How many requests will there be?
957 * \param data Command data.
958 * \param dataLen Size, in bytes, of the command data.
961 __glXSendLargeChunk(__GLXcontext
* gc
, GLint requestNumber
,
962 GLint totalRequests
, const GLvoid
* data
, GLint dataLen
)
964 Display
*dpy
= gc
->currentDpy
;
966 xcb_connection_t
*c
= XGetXCBConnection(dpy
);
967 xcb_glx_render_large(c
, gc
->currentContextTag
, requestNumber
,
968 totalRequests
, dataLen
, data
);
970 xGLXRenderLargeReq
*req
;
972 if (requestNumber
== 1) {
976 GetReq(GLXRenderLarge
, req
);
977 req
->reqType
= gc
->majorOpcode
;
978 req
->glxCode
= X_GLXRenderLarge
;
979 req
->contextTag
= gc
->currentContextTag
;
980 req
->length
+= (dataLen
+ 3) >> 2;
981 req
->requestNumber
= requestNumber
;
982 req
->requestTotal
= totalRequests
;
983 req
->dataBytes
= dataLen
;
984 Data(dpy
, data
, dataLen
);
986 if (requestNumber
== totalRequests
) {
995 * Send a command that is too large for the GLXRender protocol request.
997 * Send a large command, one that is too large for some reason to
998 * send using the GLXRender protocol request. One reason to send
999 * a large command is to avoid copying the data.
1001 * \param ctx GLX context
1002 * \param header Header data.
1003 * \param headerLen Size, in bytes, of the header data. It is assumed that
1004 * the header data will always be small enough to fit in
1005 * a single X protocol packet.
1006 * \param data Command data.
1007 * \param dataLen Size, in bytes, of the command data.
1010 __glXSendLargeCommand(__GLXcontext
* ctx
,
1011 const GLvoid
* header
, GLint headerLen
,
1012 const GLvoid
* data
, GLint dataLen
)
1015 GLint totalRequests
, requestNumber
;
1018 ** Calculate the maximum amount of data can be stuffed into a single
1019 ** packet. sz_xGLXRenderReq is added because bufSize is the maximum
1020 ** packet size minus sz_xGLXRenderReq.
1022 maxSize
= (ctx
->bufSize
+ sz_xGLXRenderReq
) - sz_xGLXRenderLargeReq
;
1023 totalRequests
= 1 + (dataLen
/ maxSize
);
1024 if (dataLen
% maxSize
)
1028 ** Send all of the command, except the large array, as one request.
1030 assert(headerLen
<= maxSize
);
1031 __glXSendLargeChunk(ctx
, 1, totalRequests
, header
, headerLen
);
1034 ** Send enough requests until the whole array is sent.
1036 for (requestNumber
= 2; requestNumber
<= (totalRequests
- 1);
1038 __glXSendLargeChunk(ctx
, requestNumber
, totalRequests
, data
, maxSize
);
1039 data
= (const GLvoid
*) (((const GLubyte
*) data
) + maxSize
);
1041 assert(dataLen
> 0);
1044 assert(dataLen
<= maxSize
);
1045 __glXSendLargeChunk(ctx
, requestNumber
, totalRequests
, data
, dataLen
);
1048 /************************************************************************/
1052 __glXDumpDrawBuffer(__GLXcontext
* ctx
)
1054 GLubyte
*p
= ctx
->buf
;
1055 GLubyte
*end
= ctx
->pc
;
1056 GLushort opcode
, length
;
1060 opcode
= *((GLushort
*) p
);
1061 length
= *((GLushort
*) (p
+ 2));
1062 printf("%2x: %5d: ", opcode
, length
);
1065 while (length
> 0) {
1066 printf("%08x ", *((unsigned *) p
));