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/apple_glx.h"
46 #include "apple/apple_visual.h"
48 #include "glxextensions.h"
50 #include <X11/Xlib-xcb.h>
56 void __glXDumpDrawBuffer(struct glx_context
* ctx
);
60 ** You can set this cell to 1 to force the gl drawing stuff to be
61 ** one command per packet
63 _X_HIDDEN
int __glXDebug
= 0;
65 /* Extension required boiler plate */
67 static const char __glXExtensionName
[] = GLX_EXTENSION_NAME
;
68 static struct glx_display
*glx_displays
;
70 static /* const */ char *error_list
[] = {
76 "GLXBadCurrentWindow",
77 "GLXBadRenderRequest",
79 "GLXUnsupportedPrivateRequest",
82 "GLXBadCurrentDrawable",
87 #ifdef GLX_USE_APPLEGL
88 static char *__glXErrorString(Display
*dpy
, int code
, XExtCodes
*codes
,
93 XEXT_GENERATE_ERROR_STRING(__glXErrorString
, __glXExtensionName
,
94 __GLX_NUMBER_ERRORS
, error_list
)
97 * GLX events are a bit funky. We don't stuff the X event code into
98 * our user exposed (via XNextEvent) structure. Instead we use the GLX
99 * private event code namespace (and hope it doesn't conflict). Clients
100 * have to know that bit 15 in the event type field means they're getting
101 * a GLX event, and then handle the various sub-event types there, rather
102 * than simply checking the event code and handling it directly.
106 __glXWireToEvent(Display
*dpy
, XEvent
*event
, xEvent
*wire
)
108 struct glx_display
*glx_dpy
= __glXInitialize(dpy
);
113 switch ((wire
->u
.u
.type
& 0x7f) - glx_dpy
->codes
->first_event
) {
114 case GLX_PbufferClobber
:
116 GLXPbufferClobberEvent
*aevent
= (GLXPbufferClobberEvent
*)event
;
117 xGLXPbufferClobberEvent
*awire
= (xGLXPbufferClobberEvent
*)wire
;
118 aevent
->event_type
= awire
->type
;
119 aevent
->serial
= awire
->sequenceNumber
;
120 aevent
->event_type
= awire
->event_type
;
121 aevent
->draw_type
= awire
->draw_type
;
122 aevent
->drawable
= awire
->drawable
;
123 aevent
->buffer_mask
= awire
->buffer_mask
;
124 aevent
->aux_buffer
= awire
->aux_buffer
;
125 aevent
->x
= awire
->x
;
126 aevent
->y
= awire
->y
;
127 aevent
->width
= awire
->width
;
128 aevent
->height
= awire
->height
;
129 aevent
->count
= awire
->count
;
132 case GLX_BufferSwapComplete
:
134 GLXBufferSwapComplete
*aevent
= (GLXBufferSwapComplete
*)event
;
135 xGLXBufferSwapComplete2
*awire
= (xGLXBufferSwapComplete2
*)wire
;
136 struct glx_drawable
*glxDraw
= GetGLXDrawable(dpy
, awire
->drawable
);
141 aevent
->serial
= _XSetLastRequestRead(dpy
, (xGenericReply
*) wire
);
142 aevent
->send_event
= (awire
->type
& 0x80) != 0;
143 aevent
->display
= dpy
;
144 aevent
->event_type
= awire
->event_type
;
145 aevent
->drawable
= glxDraw
->xDrawable
;
146 aevent
->ust
= ((CARD64
)awire
->ust_hi
<< 32) | awire
->ust_lo
;
147 aevent
->msc
= ((CARD64
)awire
->msc_hi
<< 32) | awire
->msc_lo
;
149 /* Handle 32-Bit wire sbc wraparound in both directions to cope with out
150 * of sequence 64-Bit sbc's
152 if ((int64_t) awire
->sbc
< ((int64_t) glxDraw
->lastEventSbc
- 0x40000000))
153 glxDraw
->eventSbcWrap
+= 0x100000000;
154 if ((int64_t) awire
->sbc
> ((int64_t) glxDraw
->lastEventSbc
+ 0x40000000))
155 glxDraw
->eventSbcWrap
-= 0x100000000;
156 glxDraw
->lastEventSbc
= awire
->sbc
;
157 aevent
->sbc
= awire
->sbc
+ glxDraw
->eventSbcWrap
;
161 /* client doesn't support server event */
168 /* We don't actually support this. It doesn't make sense for clients to
169 * send each other GLX events.
172 __glXEventToWire(Display
*dpy
, XEvent
*event
, xEvent
*wire
)
174 struct glx_display
*glx_dpy
= __glXInitialize(dpy
);
179 switch (event
->type
) {
184 case GLX_EXCHANGE_COMPLETE_INTEL
:
186 case GLX_COPY_COMPLETE_INTEL
:
188 case GLX_FLIP_COMPLETE_INTEL
:
191 /* client doesn't support server event */
198 /************************************************************************/
200 ** Free the per screen configs data as well as the array of
201 ** __glXScreenConfigs.
204 FreeScreenConfigs(struct glx_display
* priv
)
206 struct glx_screen
*psc
;
209 /* Free screen configuration information */
210 screens
= ScreenCount(priv
->dpy
);
211 for (i
= 0; i
< screens
; i
++) {
212 psc
= priv
->screens
[i
];
213 glx_screen_cleanup(psc
);
215 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
216 if (psc
->driScreen
) {
217 psc
->driScreen
->destroyScreen(psc
);
225 free((char *) priv
->screens
);
226 priv
->screens
= NULL
;
230 glx_display_free(struct glx_display
*priv
)
232 struct glx_context
*gc
;
234 gc
= __glXGetCurrentContext();
235 if (priv
->dpy
== gc
->currentDpy
) {
236 gc
->vtable
->destroy(gc
);
237 __glXSetCurrentContextNull();
240 FreeScreenConfigs(priv
);
241 free((char *) priv
->serverGLXvendor
);
242 free((char *) priv
->serverGLXversion
);
244 __glxHashDestroy(priv
->glXDrawHash
);
246 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
247 __glxHashDestroy(priv
->drawHash
);
249 /* Free the direct rendering per display data */
250 if (priv
->driswDisplay
)
251 (*priv
->driswDisplay
->destroyDisplay
) (priv
->driswDisplay
);
252 priv
->driswDisplay
= NULL
;
254 #if defined (GLX_USE_DRM)
255 if (priv
->driDisplay
)
256 (*priv
->driDisplay
->destroyDisplay
) (priv
->driDisplay
);
257 priv
->driDisplay
= NULL
;
259 if (priv
->dri2Display
)
260 (*priv
->dri2Display
->destroyDisplay
) (priv
->dri2Display
);
261 priv
->dri2Display
= NULL
;
263 if (priv
->dri3Display
)
264 (*priv
->dri3Display
->destroyDisplay
) (priv
->dri3Display
);
265 priv
->dri3Display
= NULL
;
266 #endif /* GLX_USE_DRM */
267 #endif /* GLX_DIRECT_RENDERING && !GLX_USE_APPLEGL */
273 __glXCloseDisplay(Display
* dpy
, XExtCodes
* codes
)
275 struct glx_display
*priv
, **prev
;
277 _XLockMutex(_Xglobal_lock
);
278 prev
= &glx_displays
;
279 for (priv
= glx_displays
; priv
; prev
= &priv
->next
, priv
= priv
->next
) {
280 if (priv
->dpy
== dpy
) {
285 _XUnlockMutex(_Xglobal_lock
);
288 glx_display_free(priv
);
294 ** Query the version of the GLX extension. This procedure works even if
295 ** the client extension is not completely set up.
298 QueryVersion(Display
* dpy
, int opcode
, int *major
, int *minor
)
300 xcb_connection_t
*c
= XGetXCBConnection(dpy
);
301 xcb_glx_query_version_reply_t
*reply
= xcb_glx_query_version_reply(c
,
302 xcb_glx_query_version
311 if (reply
->major_version
!= GLX_MAJOR_VERSION
) {
315 *major
= reply
->major_version
;
316 *minor
= min(reply
->minor_version
, GLX_MINOR_VERSION
);
322 * We don't want to enable this GLX_OML_swap_method in glxext.h,
323 * because we can't support it. The X server writes it out though,
324 * so we should handle it somehow, to avoid false warnings.
327 IGNORE_GLX_SWAP_METHOD_OML
= 0x8060
332 convert_from_x_visual_type(int visualType
)
334 static const int glx_visual_types
[] = {
335 GLX_STATIC_GRAY
, GLX_GRAY_SCALE
,
336 GLX_STATIC_COLOR
, GLX_PSEUDO_COLOR
,
337 GLX_TRUE_COLOR
, GLX_DIRECT_COLOR
340 if (visualType
< ARRAY_SIZE(glx_visual_types
))
341 return glx_visual_types
[visualType
];
347 * getVisualConfigs uses the !tagged_only path.
348 * getFBConfigs uses the tagged_only path.
351 __glXInitializeVisualConfigFromTags(struct glx_config
* config
, int count
,
352 const INT32
* bp
, Bool tagged_only
,
353 Bool fbconfig_style_tags
)
356 GLint renderType
= 0;
359 /* Copy in the first set of properties */
360 config
->visualID
= *bp
++;
362 config
->visualType
= convert_from_x_visual_type(*bp
++);
364 config
->rgbMode
= *bp
++;
366 config
->redBits
= *bp
++;
367 config
->greenBits
= *bp
++;
368 config
->blueBits
= *bp
++;
369 config
->alphaBits
= *bp
++;
370 config
->accumRedBits
= *bp
++;
371 config
->accumGreenBits
= *bp
++;
372 config
->accumBlueBits
= *bp
++;
373 config
->accumAlphaBits
= *bp
++;
375 config
->doubleBufferMode
= *bp
++;
376 config
->stereoMode
= *bp
++;
378 config
->rgbBits
= *bp
++;
379 config
->depthBits
= *bp
++;
380 config
->stencilBits
= *bp
++;
381 config
->numAuxBuffers
= *bp
++;
382 config
->level
= *bp
++;
384 #ifdef GLX_USE_APPLEGL
385 /* AppleSGLX supports pixmap and pbuffers with all config. */
386 config
->drawableType
= GLX_WINDOW_BIT
| GLX_PIXMAP_BIT
| GLX_PBUFFER_BIT
;
387 /* Unfortunately this can create an ABI compatibility problem. */
390 count
-= __GLX_MIN_CONFIG_PROPS
;
394 config
->sRGBCapable
= GL_FALSE
;
397 ** Additional properties may be in a list at the end
398 ** of the reply. They are in pairs of property type
399 ** and property value.
402 #define FETCH_OR_SET(tag) \
403 config-> tag = ( fbconfig_style_tags ) ? *bp++ : 1
405 for (i
= 0; i
< count
; i
+= 2) {
406 long int tag
= *bp
++;
410 FETCH_OR_SET(rgbMode
);
412 case GLX_BUFFER_SIZE
:
413 config
->rgbBits
= *bp
++;
416 config
->level
= *bp
++;
418 case GLX_DOUBLEBUFFER
:
419 FETCH_OR_SET(doubleBufferMode
);
422 FETCH_OR_SET(stereoMode
);
424 case GLX_AUX_BUFFERS
:
425 config
->numAuxBuffers
= *bp
++;
428 config
->redBits
= *bp
++;
431 config
->greenBits
= *bp
++;
434 config
->blueBits
= *bp
++;
437 config
->alphaBits
= *bp
++;
440 config
->depthBits
= *bp
++;
442 case GLX_STENCIL_SIZE
:
443 config
->stencilBits
= *bp
++;
445 case GLX_ACCUM_RED_SIZE
:
446 config
->accumRedBits
= *bp
++;
448 case GLX_ACCUM_GREEN_SIZE
:
449 config
->accumGreenBits
= *bp
++;
451 case GLX_ACCUM_BLUE_SIZE
:
452 config
->accumBlueBits
= *bp
++;
454 case GLX_ACCUM_ALPHA_SIZE
:
455 config
->accumAlphaBits
= *bp
++;
457 case GLX_VISUAL_CAVEAT_EXT
:
458 config
->visualRating
= *bp
++;
460 case GLX_X_VISUAL_TYPE
:
461 config
->visualType
= *bp
++;
463 case GLX_TRANSPARENT_TYPE
:
464 config
->transparentPixel
= *bp
++;
466 case GLX_TRANSPARENT_INDEX_VALUE
:
467 config
->transparentIndex
= *bp
++;
469 case GLX_TRANSPARENT_RED_VALUE
:
470 config
->transparentRed
= *bp
++;
472 case GLX_TRANSPARENT_GREEN_VALUE
:
473 config
->transparentGreen
= *bp
++;
475 case GLX_TRANSPARENT_BLUE_VALUE
:
476 config
->transparentBlue
= *bp
++;
478 case GLX_TRANSPARENT_ALPHA_VALUE
:
479 config
->transparentAlpha
= *bp
++;
482 config
->visualID
= *bp
++;
484 case GLX_DRAWABLE_TYPE
:
485 config
->drawableType
= *bp
++;
486 #ifdef GLX_USE_APPLEGL
487 /* AppleSGLX supports pixmap and pbuffers with all config. */
488 config
->drawableType
|= GLX_WINDOW_BIT
| GLX_PIXMAP_BIT
| GLX_PBUFFER_BIT
;
491 case GLX_RENDER_TYPE
: /* fbconfig render type bits */
494 case GLX_X_RENDERABLE
:
495 config
->xRenderable
= *bp
++;
497 case GLX_FBCONFIG_ID
:
498 config
->fbconfigID
= *bp
++;
500 case GLX_MAX_PBUFFER_WIDTH
:
501 config
->maxPbufferWidth
= *bp
++;
503 case GLX_MAX_PBUFFER_HEIGHT
:
504 config
->maxPbufferHeight
= *bp
++;
506 case GLX_MAX_PBUFFER_PIXELS
:
507 config
->maxPbufferPixels
= *bp
++;
509 #ifndef GLX_USE_APPLEGL
510 case GLX_OPTIMAL_PBUFFER_WIDTH_SGIX
:
511 config
->optimalPbufferWidth
= *bp
++;
513 case GLX_OPTIMAL_PBUFFER_HEIGHT_SGIX
:
514 config
->optimalPbufferHeight
= *bp
++;
516 case GLX_VISUAL_SELECT_GROUP_SGIX
:
517 config
->visualSelectGroup
= *bp
++;
519 case GLX_SWAP_METHOD_OML
:
520 config
->swapMethod
= *bp
++;
523 case GLX_SAMPLE_BUFFERS_SGIS
:
524 config
->sampleBuffers
= *bp
++;
526 case GLX_SAMPLES_SGIS
:
527 config
->samples
= *bp
++;
529 #ifdef GLX_USE_APPLEGL
530 case IGNORE_GLX_SWAP_METHOD_OML
:
531 /* We ignore this tag. See the comment above this function. */
535 case GLX_BIND_TO_TEXTURE_RGB_EXT
:
536 config
->bindToTextureRgb
= *bp
++;
538 case GLX_BIND_TO_TEXTURE_RGBA_EXT
:
539 config
->bindToTextureRgba
= *bp
++;
541 case GLX_BIND_TO_MIPMAP_TEXTURE_EXT
:
542 config
->bindToMipmapTexture
= *bp
++;
544 case GLX_BIND_TO_TEXTURE_TARGETS_EXT
:
545 config
->bindToTextureTargets
= *bp
++;
547 case GLX_Y_INVERTED_EXT
:
548 config
->yInverted
= *bp
++;
551 case GLX_FRAMEBUFFER_SRGB_CAPABLE_EXT
:
552 config
->sRGBCapable
= *bp
++;
556 if (fbconfig_style_tags
)
563 if(getenv("LIBGL_DIAGNOSTIC")) {
564 long int tagvalue
= *bp
++;
565 fprintf(stderr
, "WARNING: unknown GLX tag from server: "
566 "tag 0x%lx value 0x%lx\n", tag
, tagvalue
);
568 /* Ignore the unrecognized tag's value */
575 if (renderType
!= 0 && renderType
!= GLX_DONT_CARE
) {
576 config
->renderType
= renderType
;
577 config
->floatMode
= (renderType
&
578 (GLX_RGBA_FLOAT_BIT_ARB
|GLX_RGBA_UNSIGNED_FLOAT_BIT_EXT
)) != 0;
580 /* If there wasn't GLX_RENDER_TYPE property, set it based on
581 * config->rgbMode. The only way to communicate that the config is
582 * floating-point is via GLX_RENDER_TYPE, so this cannot be a float
586 (config
->rgbMode
) ? GLX_RGBA_BIT
: GLX_COLOR_INDEX_BIT
;
589 /* The GLX_ARB_fbconfig_float spec says:
591 * "Note that floating point rendering is only supported for
592 * GLXPbuffer drawables."
594 if (config
->floatMode
)
595 config
->drawableType
&= ~(GLX_WINDOW_BIT
|GLX_PIXMAP_BIT
);
598 static struct glx_config
*
599 createConfigsFromProperties(Display
* dpy
, int nvisuals
, int nprops
,
600 int screen
, GLboolean tagged_only
)
602 INT32 buf
[__GLX_TOTAL_CONFIG
], *props
;
604 struct glx_config
*modes
, *m
;
610 /* FIXME: Is the __GLX_MIN_CONFIG_PROPS test correct for FBconfigs? */
612 /* Check number of properties */
613 if (nprops
< __GLX_MIN_CONFIG_PROPS
|| nprops
> __GLX_MAX_CONFIG_PROPS
)
616 /* Allocate memory for our config structure */
617 modes
= glx_config_create_list(nvisuals
);
621 prop_size
= nprops
* __GLX_SIZE_INT32
;
622 if (prop_size
<= sizeof(buf
))
625 props
= malloc(prop_size
);
627 /* Read each config structure and convert it into our format */
629 for (i
= 0; i
< nvisuals
; i
++) {
630 _XRead(dpy
, (char *) props
, prop_size
);
631 #ifdef GLX_USE_APPLEGL
632 /* Older X servers don't send this so we default it here. */
633 m
->drawableType
= GLX_WINDOW_BIT
;
636 * The XQuartz 2.3.2.1 X server doesn't set this properly, so
637 * set the proper bits here.
638 * AppleSGLX supports windows, pixmaps, and pbuffers with all config.
640 m
->drawableType
= GLX_WINDOW_BIT
| GLX_PIXMAP_BIT
| GLX_PBUFFER_BIT
;
642 __glXInitializeVisualConfigFromTags(m
, nprops
, props
,
643 tagged_only
, GL_TRUE
);
655 getVisualConfigs(struct glx_screen
*psc
,
656 struct glx_display
*priv
, int screen
)
658 xGLXGetVisualConfigsReq
*req
;
659 xGLXGetVisualConfigsReply reply
;
660 Display
*dpy
= priv
->dpy
;
665 GetReq(GLXGetVisualConfigs
, req
);
666 req
->reqType
= priv
->majorOpcode
;
667 req
->glxCode
= X_GLXGetVisualConfigs
;
668 req
->screen
= screen
;
670 if (!_XReply(dpy
, (xReply
*) & reply
, 0, False
))
673 psc
->visuals
= createConfigsFromProperties(dpy
,
680 return psc
->visuals
!= NULL
;
684 getFBConfigs(struct glx_screen
*psc
, struct glx_display
*priv
, int screen
)
686 xGLXGetFBConfigsReq
*fb_req
;
687 xGLXGetFBConfigsSGIXReq
*sgi_req
;
688 xGLXVendorPrivateWithReplyReq
*vpreq
;
689 xGLXGetFBConfigsReply reply
;
690 Display
*dpy
= priv
->dpy
;
693 __glXQueryServerString(dpy
, priv
->majorOpcode
, screen
, GLX_EXTENSIONS
);
695 if (psc
->serverGLXexts
== NULL
) {
702 if (atof(priv
->serverGLXversion
) >= 1.3) {
703 GetReq(GLXGetFBConfigs
, fb_req
);
704 fb_req
->reqType
= priv
->majorOpcode
;
705 fb_req
->glxCode
= X_GLXGetFBConfigs
;
706 fb_req
->screen
= screen
;
708 else if (strstr(psc
->serverGLXexts
, "GLX_SGIX_fbconfig") != NULL
) {
709 GetReqExtra(GLXVendorPrivateWithReply
,
710 sz_xGLXGetFBConfigsSGIXReq
-
711 sz_xGLXVendorPrivateWithReplyReq
, vpreq
);
712 sgi_req
= (xGLXGetFBConfigsSGIXReq
*) vpreq
;
713 sgi_req
->reqType
= priv
->majorOpcode
;
714 sgi_req
->glxCode
= X_GLXVendorPrivateWithReply
;
715 sgi_req
->vendorCode
= X_GLXvop_GetFBConfigsSGIX
;
716 sgi_req
->screen
= screen
;
721 if (!_XReply(dpy
, (xReply
*) & reply
, 0, False
))
724 psc
->configs
= createConfigsFromProperties(dpy
,
726 reply
.numAttribs
* 2,
731 return psc
->configs
!= NULL
;
735 glx_screen_init(struct glx_screen
*psc
,
736 int screen
, struct glx_display
* priv
)
738 /* Initialize per screen dynamic client GLX extensions */
739 psc
->ext_list_first_time
= GL_TRUE
;
741 psc
->dpy
= priv
->dpy
;
744 getVisualConfigs(psc
, priv
, screen
);
745 getFBConfigs(psc
, priv
, screen
);
751 glx_screen_cleanup(struct glx_screen
*psc
)
754 glx_config_destroy_list(psc
->configs
);
755 free(psc
->effectiveGLXexts
);
756 psc
->configs
= NULL
; /* NOTE: just for paranoia */
759 glx_config_destroy_list(psc
->visuals
);
760 psc
->visuals
= NULL
; /* NOTE: just for paranoia */
762 free((char *) psc
->serverGLXexts
);
766 ** Allocate the memory for the per screen configs for each screen.
767 ** If that works then fetch the per screen configs data.
770 AllocAndFetchScreenConfigs(Display
* dpy
, struct glx_display
* priv
)
772 struct glx_screen
*psc
;
776 ** First allocate memory for the array of per screen configs.
778 screens
= ScreenCount(dpy
);
779 priv
->screens
= malloc(screens
* sizeof *priv
->screens
);
783 priv
->serverGLXversion
=
784 __glXQueryServerString(dpy
, priv
->majorOpcode
, 0, GLX_VERSION
);
785 if (priv
->serverGLXversion
== NULL
) {
786 FreeScreenConfigs(priv
);
790 for (i
= 0; i
< screens
; i
++, psc
++) {
792 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
793 #if defined(GLX_USE_DRM)
794 #if defined(HAVE_DRI3)
795 if (priv
->dri3Display
)
796 psc
= (*priv
->dri3Display
->createScreen
) (i
, priv
);
797 #endif /* HAVE_DRI3 */
798 if (psc
== NULL
&& priv
->dri2Display
)
799 psc
= (*priv
->dri2Display
->createScreen
) (i
, priv
);
800 if (psc
== NULL
&& priv
->driDisplay
)
801 psc
= (*priv
->driDisplay
->createScreen
) (i
, priv
);
802 #endif /* GLX_USE_DRM */
803 if (psc
== NULL
&& priv
->driswDisplay
)
804 psc
= (*priv
->driswDisplay
->createScreen
) (i
, priv
);
805 #endif /* GLX_DIRECT_RENDERING && !GLX_USE_APPLEGL */
807 #if defined(GLX_USE_APPLEGL)
809 psc
= applegl_create_screen(i
, priv
);
812 psc
= indirect_create_screen(i
, priv
);
814 priv
->screens
[i
] = psc
;
821 ** Initialize the client side extension code.
823 _X_HIDDEN
struct glx_display
*
824 __glXInitialize(Display
* dpy
)
826 struct glx_display
*dpyPriv
, *d
;
827 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
828 Bool glx_direct
, glx_accel
;
832 _XLockMutex(_Xglobal_lock
);
834 for (dpyPriv
= glx_displays
; dpyPriv
; dpyPriv
= dpyPriv
->next
) {
835 if (dpyPriv
->dpy
== dpy
) {
836 _XUnlockMutex(_Xglobal_lock
);
841 /* Drop the lock while we create the display private. */
842 _XUnlockMutex(_Xglobal_lock
);
844 dpyPriv
= calloc(1, sizeof *dpyPriv
);
848 dpyPriv
->codes
= XInitExtension(dpy
, __glXExtensionName
);
849 if (!dpyPriv
->codes
) {
855 dpyPriv
->majorOpcode
= dpyPriv
->codes
->major_opcode
;
856 dpyPriv
->serverGLXvendor
= 0x0;
857 dpyPriv
->serverGLXversion
= 0x0;
859 /* See if the versions are compatible. This GLX implementation does not
860 * work with servers that only support GLX 1.0.
862 if (!QueryVersion(dpy
, dpyPriv
->majorOpcode
,
863 &dpyPriv
->majorVersion
, &dpyPriv
->minorVersion
)
864 || (dpyPriv
->majorVersion
== 1 && dpyPriv
->minorVersion
< 1)) {
869 for (i
= 0; i
< __GLX_NUMBER_EVENTS
; i
++) {
870 XESetWireToEvent(dpy
, dpyPriv
->codes
->first_event
+ i
, __glXWireToEvent
);
871 XESetEventToWire(dpy
, dpyPriv
->codes
->first_event
+ i
, __glXEventToWire
);
874 XESetCloseDisplay(dpy
, dpyPriv
->codes
->extension
, __glXCloseDisplay
);
875 XESetErrorString (dpy
, dpyPriv
->codes
->extension
,__glXErrorString
);
877 dpyPriv
->glXDrawHash
= __glxHashCreate();
879 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
880 glx_direct
= (getenv("LIBGL_ALWAYS_INDIRECT") == NULL
);
881 glx_accel
= (getenv("LIBGL_ALWAYS_SOFTWARE") == NULL
);
883 dpyPriv
->drawHash
= __glxHashCreate();
886 ** Initialize the direct rendering per display data and functions.
887 ** Note: This _must_ be done before calling any other DRI routines
888 ** (e.g., those called in AllocAndFetchScreenConfigs).
890 #if defined(GLX_USE_DRM)
891 if (glx_direct
&& glx_accel
) {
892 #if defined(HAVE_DRI3)
893 if (!getenv("LIBGL_DRI3_DISABLE"))
894 dpyPriv
->dri3Display
= dri3_create_display(dpy
);
895 #endif /* HAVE_DRI3 */
896 dpyPriv
->dri2Display
= dri2CreateDisplay(dpy
);
897 dpyPriv
->driDisplay
= driCreateDisplay(dpy
);
899 #endif /* GLX_USE_DRM */
901 dpyPriv
->driswDisplay
= driswCreateDisplay(dpy
);
902 #endif /* GLX_DIRECT_RENDERING && !GLX_USE_APPLEGL */
904 #ifdef GLX_USE_APPLEGL
905 if (!applegl_create_display(dpyPriv
)) {
910 if (!AllocAndFetchScreenConfigs(dpy
, dpyPriv
)) {
915 __glX_send_client_info(dpyPriv
);
917 /* Grab the lock again and add the dispay private, unless somebody
918 * beat us to initializing on this display in the meantime. */
919 _XLockMutex(_Xglobal_lock
);
921 for (d
= glx_displays
; d
; d
= d
->next
) {
923 _XUnlockMutex(_Xglobal_lock
);
924 glx_display_free(dpyPriv
);
929 dpyPriv
->next
= glx_displays
;
930 glx_displays
= dpyPriv
;
932 _XUnlockMutex(_Xglobal_lock
);
938 ** Setup for sending a GLX command on dpy. Make sure the extension is
939 ** initialized. Try to avoid calling __glXInitialize as its kinda slow.
942 __glXSetupForCommand(Display
* dpy
)
944 struct glx_context
*gc
;
945 struct glx_display
*priv
;
947 /* If this thread has a current context, flush its rendering commands */
948 gc
= __glXGetCurrentContext();
949 if (gc
->currentDpy
) {
950 /* Flush rendering buffer of the current context, if any */
951 (void) __glXFlushRenderBuffer(gc
, gc
->pc
);
953 if (gc
->currentDpy
== dpy
) {
954 /* Use opcode from gc because its right */
955 return gc
->majorOpcode
;
959 ** Have to get info about argument dpy because it might be to
960 ** a different server
965 /* Forced to lookup extension via the slow initialize route */
966 priv
= __glXInitialize(dpy
);
970 return priv
->majorOpcode
;
974 * Flush the drawing command transport buffer.
976 * \param ctx Context whose transport buffer is to be flushed.
977 * \param pc Pointer to first unused buffer location.
980 * Modify this function to use \c ctx->pc instead of the explicit
984 __glXFlushRenderBuffer(struct glx_context
* ctx
, GLubyte
* pc
)
986 Display
*const dpy
= ctx
->currentDpy
;
987 xcb_connection_t
*c
= XGetXCBConnection(dpy
);
988 const GLint size
= pc
- ctx
->buf
;
990 if ((dpy
!= NULL
) && (size
> 0)) {
991 xcb_glx_render(c
, ctx
->currentContextTag
, size
,
992 (const uint8_t *) ctx
->buf
);
995 /* Reset pointer and return it */
1002 * Send a portion of a GLXRenderLarge command to the server. The advantage of
1003 * this function over \c __glXSendLargeCommand is that callers can use the
1004 * data buffer in the GLX context and may be able to avoid allocating an
1005 * extra buffer. The disadvantage is the clients will have to do more
1006 * GLX protocol work (i.e., calculating \c totalRequests, etc.).
1008 * \sa __glXSendLargeCommand
1010 * \param gc GLX context
1011 * \param requestNumber Which part of the whole command is this? The first
1013 * \param totalRequests How many requests will there be?
1014 * \param data Command data.
1015 * \param dataLen Size, in bytes, of the command data.
1018 __glXSendLargeChunk(struct glx_context
* gc
, GLint requestNumber
,
1019 GLint totalRequests
, const GLvoid
* data
, GLint dataLen
)
1021 Display
*dpy
= gc
->currentDpy
;
1022 xcb_connection_t
*c
= XGetXCBConnection(dpy
);
1023 xcb_glx_render_large(c
, gc
->currentContextTag
, requestNumber
,
1024 totalRequests
, dataLen
, data
);
1029 * Send a command that is too large for the GLXRender protocol request.
1031 * Send a large command, one that is too large for some reason to
1032 * send using the GLXRender protocol request. One reason to send
1033 * a large command is to avoid copying the data.
1035 * \param ctx GLX context
1036 * \param header Header data.
1037 * \param headerLen Size, in bytes, of the header data. It is assumed that
1038 * the header data will always be small enough to fit in
1039 * a single X protocol packet.
1040 * \param data Command data.
1041 * \param dataLen Size, in bytes, of the command data.
1044 __glXSendLargeCommand(struct glx_context
* ctx
,
1045 const GLvoid
* header
, GLint headerLen
,
1046 const GLvoid
* data
, GLint dataLen
)
1049 GLint totalRequests
, requestNumber
;
1052 ** Calculate the maximum amount of data can be stuffed into a single
1053 ** packet. sz_xGLXRenderReq is added because bufSize is the maximum
1054 ** packet size minus sz_xGLXRenderReq.
1056 maxSize
= (ctx
->bufSize
+ sz_xGLXRenderReq
) - sz_xGLXRenderLargeReq
;
1057 totalRequests
= 1 + (dataLen
/ maxSize
);
1058 if (dataLen
% maxSize
)
1062 ** Send all of the command, except the large array, as one request.
1064 assert(headerLen
<= maxSize
);
1065 __glXSendLargeChunk(ctx
, 1, totalRequests
, header
, headerLen
);
1068 ** Send enough requests until the whole array is sent.
1070 for (requestNumber
= 2; requestNumber
<= (totalRequests
- 1);
1072 __glXSendLargeChunk(ctx
, requestNumber
, totalRequests
, data
, maxSize
);
1073 data
= (const GLvoid
*) (((const GLubyte
*) data
) + maxSize
);
1075 assert(dataLen
> 0);
1078 assert(dataLen
<= maxSize
);
1079 __glXSendLargeChunk(ctx
, requestNumber
, totalRequests
, data
, dataLen
);
1082 /************************************************************************/
1086 __glXDumpDrawBuffer(struct glx_context
* ctx
)
1088 GLubyte
*p
= ctx
->buf
;
1089 GLubyte
*end
= ctx
->pc
;
1090 GLushort opcode
, length
;
1094 opcode
= *((GLushort
*) p
);
1095 length
= *((GLushort
*) (p
+ 2));
1096 printf("%2x: %5d: ", opcode
, length
);
1099 while (length
> 0) {
1100 printf("%08x ", *((unsigned *) p
));