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 #ifdef GLX_USE_APPLEGL
45 #include "apple_glx.h"
46 #include "apple_visual.h"
48 #include "glxextensions.h"
51 #include <X11/Xlib-xcb.h>
58 void __glXDumpDrawBuffer(struct glx_context
* ctx
);
62 ** You can set this cell to 1 to force the gl drawing stuff to be
63 ** one command per packet
65 _X_HIDDEN
int __glXDebug
= 0;
67 /* Extension required boiler plate */
69 static const char __glXExtensionName
[] = GLX_EXTENSION_NAME
;
70 static struct glx_display
*glx_displays
;
72 static /* const */ char *error_list
[] = {
78 "GLXBadCurrentWindow",
79 "GLXBadRenderRequest",
81 "GLXUnsupportedPrivateRequest",
84 "GLXBadCurrentDrawable",
88 #ifdef GLX_USE_APPLEGL
89 static char *__glXErrorString(Display
*dpy
, int code
, XExtCodes
*codes
,
94 XEXT_GENERATE_ERROR_STRING(__glXErrorString
, __glXExtensionName
,
95 __GLX_NUMBER_ERRORS
, error_list
)
98 * GLX events are a bit funky. We don't stuff the X event code into
99 * our user exposed (via XNextEvent) structure. Instead we use the GLX
100 * private event code namespace (and hope it doesn't conflict). Clients
101 * have to know that bit 15 in the event type field means they're getting
102 * a GLX event, and then handle the various sub-event types there, rather
103 * than simply checking the event code and handling it directly.
107 __glXWireToEvent(Display
*dpy
, XEvent
*event
, xEvent
*wire
)
109 struct glx_display
*glx_dpy
= __glXInitialize(dpy
);
114 switch ((wire
->u
.u
.type
& 0x7f) - glx_dpy
->codes
->first_event
) {
115 case GLX_PbufferClobber
:
117 GLXPbufferClobberEvent
*aevent
= (GLXPbufferClobberEvent
*)event
;
118 xGLXPbufferClobberEvent
*awire
= (xGLXPbufferClobberEvent
*)wire
;
119 aevent
->event_type
= awire
->type
;
120 aevent
->serial
= awire
->sequenceNumber
;
121 aevent
->event_type
= awire
->event_type
;
122 aevent
->draw_type
= awire
->draw_type
;
123 aevent
->drawable
= awire
->drawable
;
124 aevent
->buffer_mask
= awire
->buffer_mask
;
125 aevent
->aux_buffer
= awire
->aux_buffer
;
126 aevent
->x
= awire
->x
;
127 aevent
->y
= awire
->y
;
128 aevent
->width
= awire
->width
;
129 aevent
->height
= awire
->height
;
130 aevent
->count
= awire
->count
;
133 case GLX_BufferSwapComplete
:
135 GLXBufferSwapComplete
*aevent
= (GLXBufferSwapComplete
*)event
;
136 xGLXBufferSwapComplete
*awire
= (xGLXBufferSwapComplete
*)wire
;
137 aevent
->event_type
= awire
->event_type
;
138 aevent
->drawable
= awire
->drawable
;
139 aevent
->ust
= ((CARD64
)awire
->ust_hi
<< 32) | awire
->ust_lo
;
140 aevent
->msc
= ((CARD64
)awire
->msc_hi
<< 32) | awire
->msc_lo
;
141 aevent
->sbc
= ((CARD64
)awire
->sbc_hi
<< 32) | awire
->sbc_lo
;
145 /* client doesn't support server event */
152 /* We don't actually support this. It doesn't make sense for clients to
153 * send each other GLX events.
156 __glXEventToWire(Display
*dpy
, XEvent
*event
, xEvent
*wire
)
158 struct glx_display
*glx_dpy
= __glXInitialize(dpy
);
163 switch (event
->type
) {
168 case GLX_EXCHANGE_COMPLETE_INTEL
:
170 case GLX_COPY_COMPLETE_INTEL
:
172 case GLX_FLIP_COMPLETE_INTEL
:
175 /* client doesn't support server event */
182 /************************************************************************/
184 ** Free the per screen configs data as well as the array of
185 ** __glXScreenConfigs.
188 FreeScreenConfigs(struct glx_display
* priv
)
190 struct glx_screen
*psc
;
193 /* Free screen configuration information */
194 screens
= ScreenCount(priv
->dpy
);
195 for (i
= 0; i
< screens
; i
++) {
196 psc
= priv
->screens
[i
];
197 glx_screen_cleanup(psc
);
199 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
200 if (psc
->driScreen
) {
201 psc
->driScreen
->destroyScreen(psc
);
209 XFree((char *) priv
->screens
);
210 priv
->screens
= NULL
;
214 glx_display_free(struct glx_display
*priv
)
216 struct glx_context
*gc
;
218 gc
= __glXGetCurrentContext();
219 if (priv
->dpy
== gc
->currentDpy
) {
220 gc
->vtable
->destroy(gc
);
221 __glXSetCurrentContextNull();
224 FreeScreenConfigs(priv
);
225 if (priv
->serverGLXvendor
)
226 Xfree((char *) priv
->serverGLXvendor
);
227 if (priv
->serverGLXversion
)
228 Xfree((char *) priv
->serverGLXversion
);
230 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
231 __glxHashDestroy(priv
->drawHash
);
233 /* Free the direct rendering per display data */
234 if (priv
->driswDisplay
)
235 (*priv
->driswDisplay
->destroyDisplay
) (priv
->driswDisplay
);
236 priv
->driswDisplay
= NULL
;
238 if (priv
->driDisplay
)
239 (*priv
->driDisplay
->destroyDisplay
) (priv
->driDisplay
);
240 priv
->driDisplay
= NULL
;
242 if (priv
->dri2Display
)
243 (*priv
->dri2Display
->destroyDisplay
) (priv
->dri2Display
);
244 priv
->dri2Display
= NULL
;
247 Xfree((char *) priv
);
251 __glXCloseDisplay(Display
* dpy
, XExtCodes
* codes
)
253 struct glx_display
*priv
, **prev
, *next
;
255 _XLockMutex(_Xglobal_lock
);
256 prev
= &glx_displays
;
257 for (priv
= glx_displays
; priv
; prev
= &priv
->next
, priv
= priv
->next
) {
258 if (priv
->dpy
== dpy
) {
263 /* Only remove the display from the list after it's destroyed. The cleanup
264 * code (e.g. driReleaseDrawables()) ends up calling __glXInitialize(),
265 * which would create a new glx_display while we're trying to destroy this
268 glx_display_free(priv
);
270 _XUnlockMutex(_Xglobal_lock
);
276 ** Query the version of the GLX extension. This procedure works even if
277 ** the client extension is not completely set up.
280 QueryVersion(Display
* dpy
, int opcode
, int *major
, int *minor
)
283 xcb_connection_t
*c
= XGetXCBConnection(dpy
);
284 xcb_glx_query_version_reply_t
*reply
= xcb_glx_query_version_reply(c
,
285 xcb_glx_query_version
291 if (reply
->major_version
!= GLX_MAJOR_VERSION
) {
295 *major
= reply
->major_version
;
296 *minor
= min(reply
->minor_version
, GLX_MINOR_VERSION
);
300 xGLXQueryVersionReq
*req
;
301 xGLXQueryVersionReply reply
;
303 /* Send the glXQueryVersion request */
305 GetReq(GLXQueryVersion
, req
);
306 req
->reqType
= opcode
;
307 req
->glxCode
= X_GLXQueryVersion
;
308 req
->majorVersion
= GLX_MAJOR_VERSION
;
309 req
->minorVersion
= GLX_MINOR_VERSION
;
310 _XReply(dpy
, (xReply
*) & reply
, 0, False
);
314 if (reply
.majorVersion
!= GLX_MAJOR_VERSION
) {
316 ** The server does not support the same major release as this
321 *major
= reply
.majorVersion
;
322 *minor
= min(reply
.minorVersion
, GLX_MINOR_VERSION
);
328 * We don't want to enable this GLX_OML_swap_method in glxext.h,
329 * because we can't support it. The X server writes it out though,
330 * so we should handle it somehow, to avoid false warnings.
333 IGNORE_GLX_SWAP_METHOD_OML
= 0x8060
338 convert_from_x_visual_type(int visualType
)
340 static const int glx_visual_types
[] = {
341 GLX_STATIC_GRAY
, GLX_GRAY_SCALE
,
342 GLX_STATIC_COLOR
, GLX_PSEUDO_COLOR
,
343 GLX_TRUE_COLOR
, GLX_DIRECT_COLOR
346 if (visualType
< ARRAY_SIZE(glx_visual_types
))
347 return glx_visual_types
[visualType
];
353 * getVisualConfigs uses the !tagged_only path.
354 * getFBConfigs uses the tagged_only path.
357 __glXInitializeVisualConfigFromTags(struct glx_config
* 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
= 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
++;
554 case GLX_FRAMEBUFFER_SRGB_CAPABLE_EXT
:
555 config
->sRGBCapable
= *bp
++;
559 if (fbconfig_style_tags
)
566 if(getenv("LIBGL_DIAGNOSTIC")) {
567 long int tagvalue
= *bp
++;
568 fprintf(stderr
, "WARNING: unknown GLX tag from server: "
569 "tag 0x%lx value 0x%lx\n", tag
, tagvalue
);
571 /* Ignore the unrecognized tag's value */
579 (config
->rgbMode
) ? GLX_RGBA_BIT
: GLX_COLOR_INDEX_BIT
;
582 static struct glx_config
*
583 createConfigsFromProperties(Display
* dpy
, int nvisuals
, int nprops
,
584 int screen
, GLboolean tagged_only
)
586 INT32 buf
[__GLX_TOTAL_CONFIG
], *props
;
588 struct glx_config
*modes
, *m
;
594 /* FIXME: Is the __GLX_MIN_CONFIG_PROPS test correct for FBconfigs? */
596 /* Check number of properties */
597 if (nprops
< __GLX_MIN_CONFIG_PROPS
|| nprops
> __GLX_MAX_CONFIG_PROPS
)
600 /* Allocate memory for our config structure */
601 modes
= glx_config_create_list(nvisuals
);
605 prop_size
= nprops
* __GLX_SIZE_INT32
;
606 if (prop_size
<= sizeof(buf
))
609 props
= Xmalloc(prop_size
);
611 /* Read each config structure and convert it into our format */
613 for (i
= 0; i
< nvisuals
; i
++) {
614 _XRead(dpy
, (char *) props
, prop_size
);
615 #ifdef GLX_USE_APPLEGL
616 /* Older X servers don't send this so we default it here. */
617 m
->drawableType
= GLX_WINDOW_BIT
;
620 * The XQuartz 2.3.2.1 X server doesn't set this properly, so
621 * set the proper bits here.
622 * AppleSGLX supports windows, pixmaps, and pbuffers with all config.
624 m
->drawableType
= GLX_WINDOW_BIT
| GLX_PIXMAP_BIT
| GLX_PBUFFER_BIT
;
626 __glXInitializeVisualConfigFromTags(m
, nprops
, props
,
627 tagged_only
, GL_TRUE
);
639 getVisualConfigs(struct glx_screen
*psc
,
640 struct glx_display
*priv
, int screen
)
642 xGLXGetVisualConfigsReq
*req
;
643 xGLXGetVisualConfigsReply reply
;
644 Display
*dpy
= priv
->dpy
;
649 GetReq(GLXGetVisualConfigs
, req
);
650 req
->reqType
= priv
->majorOpcode
;
651 req
->glxCode
= X_GLXGetVisualConfigs
;
652 req
->screen
= screen
;
654 if (!_XReply(dpy
, (xReply
*) & reply
, 0, False
))
657 psc
->visuals
= createConfigsFromProperties(dpy
,
664 return psc
->visuals
!= NULL
;
668 getFBConfigs(struct glx_screen
*psc
, struct glx_display
*priv
, int screen
)
670 xGLXGetFBConfigsReq
*fb_req
;
671 xGLXGetFBConfigsSGIXReq
*sgi_req
;
672 xGLXVendorPrivateWithReplyReq
*vpreq
;
673 xGLXGetFBConfigsReply reply
;
674 Display
*dpy
= priv
->dpy
;
677 __glXQueryServerString(dpy
, priv
->majorOpcode
, screen
, GLX_EXTENSIONS
);
682 if (atof(priv
->serverGLXversion
) >= 1.3) {
683 GetReq(GLXGetFBConfigs
, fb_req
);
684 fb_req
->reqType
= priv
->majorOpcode
;
685 fb_req
->glxCode
= X_GLXGetFBConfigs
;
686 fb_req
->screen
= screen
;
688 else if (strstr(psc
->serverGLXexts
, "GLX_SGIX_fbconfig") != NULL
) {
689 GetReqExtra(GLXVendorPrivateWithReply
,
690 sz_xGLXGetFBConfigsSGIXReq
-
691 sz_xGLXVendorPrivateWithReplyReq
, vpreq
);
692 sgi_req
= (xGLXGetFBConfigsSGIXReq
*) vpreq
;
693 sgi_req
->reqType
= priv
->majorOpcode
;
694 sgi_req
->glxCode
= X_GLXVendorPrivateWithReply
;
695 sgi_req
->vendorCode
= X_GLXvop_GetFBConfigsSGIX
;
696 sgi_req
->screen
= screen
;
701 if (!_XReply(dpy
, (xReply
*) & reply
, 0, False
))
704 psc
->configs
= createConfigsFromProperties(dpy
,
706 reply
.numAttribs
* 2,
711 return psc
->configs
!= NULL
;
715 glx_screen_init(struct glx_screen
*psc
,
716 int screen
, struct glx_display
* priv
)
718 /* Initialize per screen dynamic client GLX extensions */
719 psc
->ext_list_first_time
= GL_TRUE
;
721 psc
->dpy
= priv
->dpy
;
724 getVisualConfigs(psc
, priv
, screen
);
725 getFBConfigs(psc
, priv
, screen
);
731 glx_screen_cleanup(struct glx_screen
*psc
)
734 glx_config_destroy_list(psc
->configs
);
735 if (psc
->effectiveGLXexts
)
736 Xfree(psc
->effectiveGLXexts
);
737 psc
->configs
= NULL
; /* NOTE: just for paranoia */
740 glx_config_destroy_list(psc
->visuals
);
741 psc
->visuals
= NULL
; /* NOTE: just for paranoia */
743 Xfree((char *) psc
->serverGLXexts
);
747 ** Allocate the memory for the per screen configs for each screen.
748 ** If that works then fetch the per screen configs data.
751 AllocAndFetchScreenConfigs(Display
* dpy
, struct glx_display
* priv
)
753 struct glx_screen
*psc
;
757 ** First allocate memory for the array of per screen configs.
759 screens
= ScreenCount(dpy
);
760 priv
->screens
= Xmalloc(screens
* sizeof *priv
->screens
);
764 priv
->serverGLXversion
=
765 __glXQueryServerString(dpy
, priv
->majorOpcode
, 0, GLX_VERSION
);
766 if (priv
->serverGLXversion
== NULL
) {
767 FreeScreenConfigs(priv
);
771 for (i
= 0; i
< screens
; i
++, psc
++) {
773 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
774 if (priv
->dri2Display
)
775 psc
= (*priv
->dri2Display
->createScreen
) (i
, priv
);
776 if (psc
== NULL
&& priv
->driDisplay
)
777 psc
= (*priv
->driDisplay
->createScreen
) (i
, priv
);
778 if (psc
== NULL
&& priv
->driswDisplay
)
779 psc
= (*priv
->driswDisplay
->createScreen
) (i
, priv
);
781 #if defined(GLX_USE_APPLEGL)
783 psc
= applegl_create_screen(i
, priv
);
786 psc
= indirect_create_screen(i
, priv
);
788 priv
->screens
[i
] = psc
;
795 ** Initialize the client side extension code.
797 _X_HIDDEN
struct glx_display
*
798 __glXInitialize(Display
* dpy
)
800 struct glx_display
*dpyPriv
, *d
;
801 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
802 Bool glx_direct
, glx_accel
;
806 _XLockMutex(_Xglobal_lock
);
808 for (dpyPriv
= glx_displays
; dpyPriv
; dpyPriv
= dpyPriv
->next
) {
809 if (dpyPriv
->dpy
== dpy
) {
810 _XUnlockMutex(_Xglobal_lock
);
815 /* Drop the lock while we create the display private. */
816 _XUnlockMutex(_Xglobal_lock
);
818 dpyPriv
= Xcalloc(1, sizeof *dpyPriv
);
822 dpyPriv
->codes
= XInitExtension(dpy
, __glXExtensionName
);
823 if (!dpyPriv
->codes
) {
825 _XUnlockMutex(_Xglobal_lock
);
830 dpyPriv
->majorOpcode
= dpyPriv
->codes
->major_opcode
;
831 dpyPriv
->serverGLXvendor
= 0x0;
832 dpyPriv
->serverGLXversion
= 0x0;
834 /* See if the versions are compatible */
835 if (!QueryVersion(dpy
, dpyPriv
->majorOpcode
,
836 &dpyPriv
->majorVersion
, &dpyPriv
->minorVersion
)) {
838 _XUnlockMutex(_Xglobal_lock
);
842 for (i
= 0; i
< __GLX_NUMBER_EVENTS
; i
++) {
843 XESetWireToEvent(dpy
, dpyPriv
->codes
->first_event
+ i
, __glXWireToEvent
);
844 XESetEventToWire(dpy
, dpyPriv
->codes
->first_event
+ i
, __glXEventToWire
);
847 XESetCloseDisplay(dpy
, dpyPriv
->codes
->extension
, __glXCloseDisplay
);
848 XESetErrorString (dpy
, dpyPriv
->codes
->extension
,__glXErrorString
);
850 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
851 glx_direct
= (getenv("LIBGL_ALWAYS_INDIRECT") == NULL
);
852 glx_accel
= (getenv("LIBGL_ALWAYS_SOFTWARE") == NULL
);
854 dpyPriv
->drawHash
= __glxHashCreate();
857 ** Initialize the direct rendering per display data and functions.
858 ** Note: This _must_ be done before calling any other DRI routines
859 ** (e.g., those called in AllocAndFetchScreenConfigs).
861 if (glx_direct
&& glx_accel
) {
862 dpyPriv
->dri2Display
= dri2CreateDisplay(dpy
);
863 dpyPriv
->driDisplay
= driCreateDisplay(dpy
);
866 dpyPriv
->driswDisplay
= driswCreateDisplay(dpy
);
869 #ifdef GLX_USE_APPLEGL
870 if (!applegl_create_display(dpyPriv
)) {
875 if (!AllocAndFetchScreenConfigs(dpy
, dpyPriv
)) {
880 if (dpyPriv
->majorVersion
== 1 && dpyPriv
->minorVersion
>= 1)
881 __glXClientInfo(dpy
, dpyPriv
->majorOpcode
);
883 /* Grab the lock again and add the dispay private, unless somebody
884 * beat us to initializing on this display in the meantime. */
885 _XLockMutex(_Xglobal_lock
);
887 for (d
= glx_displays
; d
; d
= d
->next
) {
889 _XUnlockMutex(_Xglobal_lock
);
890 glx_display_free(dpyPriv
);
895 dpyPriv
->next
= glx_displays
;
896 glx_displays
= dpyPriv
;
898 _XUnlockMutex(_Xglobal_lock
);
904 ** Setup for sending a GLX command on dpy. Make sure the extension is
905 ** initialized. Try to avoid calling __glXInitialize as its kinda slow.
908 __glXSetupForCommand(Display
* dpy
)
910 struct glx_context
*gc
;
911 struct glx_display
*priv
;
913 /* If this thread has a current context, flush its rendering commands */
914 gc
= __glXGetCurrentContext();
915 if (gc
->currentDpy
) {
916 /* Flush rendering buffer of the current context, if any */
917 (void) __glXFlushRenderBuffer(gc
, gc
->pc
);
919 if (gc
->currentDpy
== dpy
) {
920 /* Use opcode from gc because its right */
921 return gc
->majorOpcode
;
925 ** Have to get info about argument dpy because it might be to
926 ** a different server
931 /* Forced to lookup extension via the slow initialize route */
932 priv
= __glXInitialize(dpy
);
936 return priv
->majorOpcode
;
940 * Flush the drawing command transport buffer.
942 * \param ctx Context whose transport buffer is to be flushed.
943 * \param pc Pointer to first unused buffer location.
946 * Modify this function to use \c ctx->pc instead of the explicit
950 __glXFlushRenderBuffer(struct glx_context
* ctx
, GLubyte
* pc
)
952 Display
*const dpy
= ctx
->currentDpy
;
954 xcb_connection_t
*c
= XGetXCBConnection(dpy
);
958 const GLint size
= pc
- ctx
->buf
;
960 if ((dpy
!= NULL
) && (size
> 0)) {
962 xcb_glx_render(c
, ctx
->currentContextTag
, size
,
963 (const uint8_t *) ctx
->buf
);
965 /* Send the entire buffer as an X request */
967 GetReq(GLXRender
, req
);
968 req
->reqType
= ctx
->majorOpcode
;
969 req
->glxCode
= X_GLXRender
;
970 req
->contextTag
= ctx
->currentContextTag
;
971 req
->length
+= (size
+ 3) >> 2;
972 _XSend(dpy
, (char *) ctx
->buf
, size
);
978 /* Reset pointer and return it */
985 * Send a portion of a GLXRenderLarge command to the server. The advantage of
986 * this function over \c __glXSendLargeCommand is that callers can use the
987 * data buffer in the GLX context and may be able to avoid allocating an
988 * extra buffer. The disadvantage is the clients will have to do more
989 * GLX protocol work (i.e., calculating \c totalRequests, etc.).
991 * \sa __glXSendLargeCommand
993 * \param gc GLX context
994 * \param requestNumber Which part of the whole command is this? The first
996 * \param totalRequests How many requests will there be?
997 * \param data Command data.
998 * \param dataLen Size, in bytes, of the command data.
1001 __glXSendLargeChunk(struct glx_context
* gc
, GLint requestNumber
,
1002 GLint totalRequests
, const GLvoid
* data
, GLint dataLen
)
1004 Display
*dpy
= gc
->currentDpy
;
1006 xcb_connection_t
*c
= XGetXCBConnection(dpy
);
1007 xcb_glx_render_large(c
, gc
->currentContextTag
, requestNumber
,
1008 totalRequests
, dataLen
, data
);
1010 xGLXRenderLargeReq
*req
;
1012 if (requestNumber
== 1) {
1016 GetReq(GLXRenderLarge
, req
);
1017 req
->reqType
= gc
->majorOpcode
;
1018 req
->glxCode
= X_GLXRenderLarge
;
1019 req
->contextTag
= gc
->currentContextTag
;
1020 req
->length
+= (dataLen
+ 3) >> 2;
1021 req
->requestNumber
= requestNumber
;
1022 req
->requestTotal
= totalRequests
;
1023 req
->dataBytes
= dataLen
;
1024 Data(dpy
, data
, dataLen
);
1026 if (requestNumber
== totalRequests
) {
1030 #endif /* USE_XCB */
1035 * Send a command that is too large for the GLXRender protocol request.
1037 * Send a large command, one that is too large for some reason to
1038 * send using the GLXRender protocol request. One reason to send
1039 * a large command is to avoid copying the data.
1041 * \param ctx GLX context
1042 * \param header Header data.
1043 * \param headerLen Size, in bytes, of the header data. It is assumed that
1044 * the header data will always be small enough to fit in
1045 * a single X protocol packet.
1046 * \param data Command data.
1047 * \param dataLen Size, in bytes, of the command data.
1050 __glXSendLargeCommand(struct glx_context
* ctx
,
1051 const GLvoid
* header
, GLint headerLen
,
1052 const GLvoid
* data
, GLint dataLen
)
1055 GLint totalRequests
, requestNumber
;
1058 ** Calculate the maximum amount of data can be stuffed into a single
1059 ** packet. sz_xGLXRenderReq is added because bufSize is the maximum
1060 ** packet size minus sz_xGLXRenderReq.
1062 maxSize
= (ctx
->bufSize
+ sz_xGLXRenderReq
) - sz_xGLXRenderLargeReq
;
1063 totalRequests
= 1 + (dataLen
/ maxSize
);
1064 if (dataLen
% maxSize
)
1068 ** Send all of the command, except the large array, as one request.
1070 assert(headerLen
<= maxSize
);
1071 __glXSendLargeChunk(ctx
, 1, totalRequests
, header
, headerLen
);
1074 ** Send enough requests until the whole array is sent.
1076 for (requestNumber
= 2; requestNumber
<= (totalRequests
- 1);
1078 __glXSendLargeChunk(ctx
, requestNumber
, totalRequests
, data
, maxSize
);
1079 data
= (const GLvoid
*) (((const GLubyte
*) data
) + maxSize
);
1081 assert(dataLen
> 0);
1084 assert(dataLen
<= maxSize
);
1085 __glXSendLargeChunk(ctx
, requestNumber
, totalRequests
, data
, dataLen
);
1088 /************************************************************************/
1092 __glXDumpDrawBuffer(struct glx_context
* ctx
)
1094 GLubyte
*p
= ctx
->buf
;
1095 GLubyte
*end
= ctx
->pc
;
1096 GLushort opcode
, length
;
1100 opcode
= *((GLushort
*) p
);
1101 length
= *((GLushort
*) (p
+ 2));
1102 printf("%2x: %5d: ", opcode
, length
);
1105 while (length
> 0) {
1106 printf("%08x ", *((unsigned *) p
));