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
->event_type
= awire
->event_type
;
142 aevent
->drawable
= glxDraw
->xDrawable
;
143 aevent
->ust
= ((CARD64
)awire
->ust_hi
<< 32) | awire
->ust_lo
;
144 aevent
->msc
= ((CARD64
)awire
->msc_hi
<< 32) | awire
->msc_lo
;
146 /* Handle 32-Bit wire sbc wraparound in both directions to cope with out
147 * of sequence 64-Bit sbc's
149 if ((int64_t) awire
->sbc
< ((int64_t) glxDraw
->lastEventSbc
- 0x40000000))
150 glxDraw
->eventSbcWrap
+= 0x100000000;
151 if ((int64_t) awire
->sbc
> ((int64_t) glxDraw
->lastEventSbc
+ 0x40000000))
152 glxDraw
->eventSbcWrap
-= 0x100000000;
153 glxDraw
->lastEventSbc
= awire
->sbc
;
154 aevent
->sbc
= awire
->sbc
+ glxDraw
->eventSbcWrap
;
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 struct glx_display
*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(struct glx_display
* priv
)
203 struct glx_screen
*psc
;
206 /* Free screen configuration information */
207 screens
= ScreenCount(priv
->dpy
);
208 for (i
= 0; i
< screens
; i
++) {
209 psc
= priv
->screens
[i
];
210 glx_screen_cleanup(psc
);
212 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
213 if (psc
->driScreen
) {
214 psc
->driScreen
->destroyScreen(psc
);
222 free((char *) priv
->screens
);
223 priv
->screens
= NULL
;
227 glx_display_free(struct glx_display
*priv
)
229 struct glx_context
*gc
;
231 gc
= __glXGetCurrentContext();
232 if (priv
->dpy
== gc
->currentDpy
) {
233 gc
->vtable
->destroy(gc
);
234 __glXSetCurrentContextNull();
237 FreeScreenConfigs(priv
);
238 free((char *) priv
->serverGLXvendor
);
239 free((char *) priv
->serverGLXversion
);
241 __glxHashDestroy(priv
->glXDrawHash
);
243 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
244 __glxHashDestroy(priv
->drawHash
);
246 /* Free the direct rendering per display data */
247 if (priv
->driswDisplay
)
248 (*priv
->driswDisplay
->destroyDisplay
) (priv
->driswDisplay
);
249 priv
->driswDisplay
= NULL
;
251 #if defined (GLX_USE_DRM)
252 if (priv
->driDisplay
)
253 (*priv
->driDisplay
->destroyDisplay
) (priv
->driDisplay
);
254 priv
->driDisplay
= NULL
;
256 if (priv
->dri2Display
)
257 (*priv
->dri2Display
->destroyDisplay
) (priv
->dri2Display
);
258 priv
->dri2Display
= NULL
;
260 if (priv
->dri3Display
)
261 (*priv
->dri3Display
->destroyDisplay
) (priv
->dri3Display
);
262 priv
->dri3Display
= NULL
;
263 #endif /* GLX_USE_DRM */
264 #endif /* GLX_DIRECT_RENDERING && !GLX_USE_APPLEGL */
270 __glXCloseDisplay(Display
* dpy
, XExtCodes
* codes
)
272 struct glx_display
*priv
, **prev
;
274 _XLockMutex(_Xglobal_lock
);
275 prev
= &glx_displays
;
276 for (priv
= glx_displays
; priv
; prev
= &priv
->next
, priv
= priv
->next
) {
277 if (priv
->dpy
== dpy
) {
282 _XUnlockMutex(_Xglobal_lock
);
285 glx_display_free(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
)
297 xcb_connection_t
*c
= XGetXCBConnection(dpy
);
298 xcb_glx_query_version_reply_t
*reply
= xcb_glx_query_version_reply(c
,
299 xcb_glx_query_version
308 if (reply
->major_version
!= GLX_MAJOR_VERSION
) {
312 *major
= reply
->major_version
;
313 *minor
= min(reply
->minor_version
, GLX_MINOR_VERSION
);
319 * We don't want to enable this GLX_OML_swap_method in glxext.h,
320 * because we can't support it. The X server writes it out though,
321 * so we should handle it somehow, to avoid false warnings.
324 IGNORE_GLX_SWAP_METHOD_OML
= 0x8060
329 convert_from_x_visual_type(int visualType
)
331 static const int glx_visual_types
[] = {
332 GLX_STATIC_GRAY
, GLX_GRAY_SCALE
,
333 GLX_STATIC_COLOR
, GLX_PSEUDO_COLOR
,
334 GLX_TRUE_COLOR
, GLX_DIRECT_COLOR
337 if (visualType
< ARRAY_SIZE(glx_visual_types
))
338 return glx_visual_types
[visualType
];
344 * getVisualConfigs uses the !tagged_only path.
345 * getFBConfigs uses the tagged_only path.
348 __glXInitializeVisualConfigFromTags(struct glx_config
* config
, int count
,
349 const INT32
* bp
, Bool tagged_only
,
350 Bool fbconfig_style_tags
)
353 GLint renderType
= 0;
356 /* Copy in the first set of properties */
357 config
->visualID
= *bp
++;
359 config
->visualType
= convert_from_x_visual_type(*bp
++);
361 config
->rgbMode
= *bp
++;
363 config
->redBits
= *bp
++;
364 config
->greenBits
= *bp
++;
365 config
->blueBits
= *bp
++;
366 config
->alphaBits
= *bp
++;
367 config
->accumRedBits
= *bp
++;
368 config
->accumGreenBits
= *bp
++;
369 config
->accumBlueBits
= *bp
++;
370 config
->accumAlphaBits
= *bp
++;
372 config
->doubleBufferMode
= *bp
++;
373 config
->stereoMode
= *bp
++;
375 config
->rgbBits
= *bp
++;
376 config
->depthBits
= *bp
++;
377 config
->stencilBits
= *bp
++;
378 config
->numAuxBuffers
= *bp
++;
379 config
->level
= *bp
++;
381 #ifdef GLX_USE_APPLEGL
382 /* AppleSGLX supports pixmap and pbuffers with all config. */
383 config
->drawableType
= GLX_WINDOW_BIT
| GLX_PIXMAP_BIT
| GLX_PBUFFER_BIT
;
384 /* Unfortunately this can create an ABI compatibility problem. */
387 count
-= __GLX_MIN_CONFIG_PROPS
;
391 config
->sRGBCapable
= GL_FALSE
;
394 ** Additional properties may be in a list at the end
395 ** of the reply. They are in pairs of property type
396 ** and property value.
399 #define FETCH_OR_SET(tag) \
400 config-> tag = ( fbconfig_style_tags ) ? *bp++ : 1
402 for (i
= 0; i
< count
; i
+= 2) {
403 long int tag
= *bp
++;
407 FETCH_OR_SET(rgbMode
);
409 case GLX_BUFFER_SIZE
:
410 config
->rgbBits
= *bp
++;
413 config
->level
= *bp
++;
415 case GLX_DOUBLEBUFFER
:
416 FETCH_OR_SET(doubleBufferMode
);
419 FETCH_OR_SET(stereoMode
);
421 case GLX_AUX_BUFFERS
:
422 config
->numAuxBuffers
= *bp
++;
425 config
->redBits
= *bp
++;
428 config
->greenBits
= *bp
++;
431 config
->blueBits
= *bp
++;
434 config
->alphaBits
= *bp
++;
437 config
->depthBits
= *bp
++;
439 case GLX_STENCIL_SIZE
:
440 config
->stencilBits
= *bp
++;
442 case GLX_ACCUM_RED_SIZE
:
443 config
->accumRedBits
= *bp
++;
445 case GLX_ACCUM_GREEN_SIZE
:
446 config
->accumGreenBits
= *bp
++;
448 case GLX_ACCUM_BLUE_SIZE
:
449 config
->accumBlueBits
= *bp
++;
451 case GLX_ACCUM_ALPHA_SIZE
:
452 config
->accumAlphaBits
= *bp
++;
454 case GLX_VISUAL_CAVEAT_EXT
:
455 config
->visualRating
= *bp
++;
457 case GLX_X_VISUAL_TYPE
:
458 config
->visualType
= *bp
++;
460 case GLX_TRANSPARENT_TYPE
:
461 config
->transparentPixel
= *bp
++;
463 case GLX_TRANSPARENT_INDEX_VALUE
:
464 config
->transparentIndex
= *bp
++;
466 case GLX_TRANSPARENT_RED_VALUE
:
467 config
->transparentRed
= *bp
++;
469 case GLX_TRANSPARENT_GREEN_VALUE
:
470 config
->transparentGreen
= *bp
++;
472 case GLX_TRANSPARENT_BLUE_VALUE
:
473 config
->transparentBlue
= *bp
++;
475 case GLX_TRANSPARENT_ALPHA_VALUE
:
476 config
->transparentAlpha
= *bp
++;
479 config
->visualID
= *bp
++;
481 case GLX_DRAWABLE_TYPE
:
482 config
->drawableType
= *bp
++;
483 #ifdef GLX_USE_APPLEGL
484 /* AppleSGLX supports pixmap and pbuffers with all config. */
485 config
->drawableType
|= GLX_WINDOW_BIT
| GLX_PIXMAP_BIT
| GLX_PBUFFER_BIT
;
488 case GLX_RENDER_TYPE
: /* fbconfig render type bits */
491 case GLX_X_RENDERABLE
:
492 config
->xRenderable
= *bp
++;
494 case GLX_FBCONFIG_ID
:
495 config
->fbconfigID
= *bp
++;
497 case GLX_MAX_PBUFFER_WIDTH
:
498 config
->maxPbufferWidth
= *bp
++;
500 case GLX_MAX_PBUFFER_HEIGHT
:
501 config
->maxPbufferHeight
= *bp
++;
503 case GLX_MAX_PBUFFER_PIXELS
:
504 config
->maxPbufferPixels
= *bp
++;
506 #ifndef GLX_USE_APPLEGL
507 case GLX_OPTIMAL_PBUFFER_WIDTH_SGIX
:
508 config
->optimalPbufferWidth
= *bp
++;
510 case GLX_OPTIMAL_PBUFFER_HEIGHT_SGIX
:
511 config
->optimalPbufferHeight
= *bp
++;
513 case GLX_VISUAL_SELECT_GROUP_SGIX
:
514 config
->visualSelectGroup
= *bp
++;
516 case GLX_SWAP_METHOD_OML
:
517 config
->swapMethod
= *bp
++;
520 case GLX_SAMPLE_BUFFERS_SGIS
:
521 config
->sampleBuffers
= *bp
++;
523 case GLX_SAMPLES_SGIS
:
524 config
->samples
= *bp
++;
526 #ifdef GLX_USE_APPLEGL
527 case IGNORE_GLX_SWAP_METHOD_OML
:
528 /* We ignore this tag. See the comment above this function. */
532 case GLX_BIND_TO_TEXTURE_RGB_EXT
:
533 config
->bindToTextureRgb
= *bp
++;
535 case GLX_BIND_TO_TEXTURE_RGBA_EXT
:
536 config
->bindToTextureRgba
= *bp
++;
538 case GLX_BIND_TO_MIPMAP_TEXTURE_EXT
:
539 config
->bindToMipmapTexture
= *bp
++;
541 case GLX_BIND_TO_TEXTURE_TARGETS_EXT
:
542 config
->bindToTextureTargets
= *bp
++;
544 case GLX_Y_INVERTED_EXT
:
545 config
->yInverted
= *bp
++;
548 case GLX_FRAMEBUFFER_SRGB_CAPABLE_EXT
:
549 config
->sRGBCapable
= *bp
++;
553 if (fbconfig_style_tags
)
560 if(getenv("LIBGL_DIAGNOSTIC")) {
561 long int tagvalue
= *bp
++;
562 fprintf(stderr
, "WARNING: unknown GLX tag from server: "
563 "tag 0x%lx value 0x%lx\n", tag
, tagvalue
);
565 /* Ignore the unrecognized tag's value */
572 if (renderType
!= 0 && renderType
!= GLX_DONT_CARE
) {
573 config
->renderType
= renderType
;
574 config
->floatMode
= (renderType
&
575 (GLX_RGBA_FLOAT_BIT_ARB
|GLX_RGBA_UNSIGNED_FLOAT_BIT_EXT
)) != 0;
577 /* If there wasn't GLX_RENDER_TYPE property, set it based on
578 * config->rgbMode. The only way to communicate that the config is
579 * floating-point is via GLX_RENDER_TYPE, so this cannot be a float
583 (config
->rgbMode
) ? GLX_RGBA_BIT
: GLX_COLOR_INDEX_BIT
;
586 /* The GLX_ARB_fbconfig_float spec says:
588 * "Note that floating point rendering is only supported for
589 * GLXPbuffer drawables."
591 if (config
->floatMode
)
592 config
->drawableType
&= ~(GLX_WINDOW_BIT
|GLX_PIXMAP_BIT
);
595 static struct glx_config
*
596 createConfigsFromProperties(Display
* dpy
, int nvisuals
, int nprops
,
597 int screen
, GLboolean tagged_only
)
599 INT32 buf
[__GLX_TOTAL_CONFIG
], *props
;
601 struct glx_config
*modes
, *m
;
607 /* FIXME: Is the __GLX_MIN_CONFIG_PROPS test correct for FBconfigs? */
609 /* Check number of properties */
610 if (nprops
< __GLX_MIN_CONFIG_PROPS
|| nprops
> __GLX_MAX_CONFIG_PROPS
)
613 /* Allocate memory for our config structure */
614 modes
= glx_config_create_list(nvisuals
);
618 prop_size
= nprops
* __GLX_SIZE_INT32
;
619 if (prop_size
<= sizeof(buf
))
622 props
= malloc(prop_size
);
624 /* Read each config structure and convert it into our format */
626 for (i
= 0; i
< nvisuals
; i
++) {
627 _XRead(dpy
, (char *) props
, prop_size
);
628 #ifdef GLX_USE_APPLEGL
629 /* Older X servers don't send this so we default it here. */
630 m
->drawableType
= GLX_WINDOW_BIT
;
633 * The XQuartz 2.3.2.1 X server doesn't set this properly, so
634 * set the proper bits here.
635 * AppleSGLX supports windows, pixmaps, and pbuffers with all config.
637 m
->drawableType
= GLX_WINDOW_BIT
| GLX_PIXMAP_BIT
| GLX_PBUFFER_BIT
;
639 __glXInitializeVisualConfigFromTags(m
, nprops
, props
,
640 tagged_only
, GL_TRUE
);
652 getVisualConfigs(struct glx_screen
*psc
,
653 struct glx_display
*priv
, int screen
)
655 xGLXGetVisualConfigsReq
*req
;
656 xGLXGetVisualConfigsReply reply
;
657 Display
*dpy
= priv
->dpy
;
662 GetReq(GLXGetVisualConfigs
, req
);
663 req
->reqType
= priv
->majorOpcode
;
664 req
->glxCode
= X_GLXGetVisualConfigs
;
665 req
->screen
= screen
;
667 if (!_XReply(dpy
, (xReply
*) & reply
, 0, False
))
670 psc
->visuals
= createConfigsFromProperties(dpy
,
677 return psc
->visuals
!= NULL
;
681 getFBConfigs(struct glx_screen
*psc
, struct glx_display
*priv
, int screen
)
683 xGLXGetFBConfigsReq
*fb_req
;
684 xGLXGetFBConfigsSGIXReq
*sgi_req
;
685 xGLXVendorPrivateWithReplyReq
*vpreq
;
686 xGLXGetFBConfigsReply reply
;
687 Display
*dpy
= priv
->dpy
;
690 __glXQueryServerString(dpy
, priv
->majorOpcode
, screen
, GLX_EXTENSIONS
);
692 if (psc
->serverGLXexts
== NULL
) {
699 if (atof(priv
->serverGLXversion
) >= 1.3) {
700 GetReq(GLXGetFBConfigs
, fb_req
);
701 fb_req
->reqType
= priv
->majorOpcode
;
702 fb_req
->glxCode
= X_GLXGetFBConfigs
;
703 fb_req
->screen
= screen
;
705 else if (strstr(psc
->serverGLXexts
, "GLX_SGIX_fbconfig") != NULL
) {
706 GetReqExtra(GLXVendorPrivateWithReply
,
707 sz_xGLXGetFBConfigsSGIXReq
-
708 sz_xGLXVendorPrivateWithReplyReq
, vpreq
);
709 sgi_req
= (xGLXGetFBConfigsSGIXReq
*) vpreq
;
710 sgi_req
->reqType
= priv
->majorOpcode
;
711 sgi_req
->glxCode
= X_GLXVendorPrivateWithReply
;
712 sgi_req
->vendorCode
= X_GLXvop_GetFBConfigsSGIX
;
713 sgi_req
->screen
= screen
;
718 if (!_XReply(dpy
, (xReply
*) & reply
, 0, False
))
721 psc
->configs
= createConfigsFromProperties(dpy
,
723 reply
.numAttribs
* 2,
728 return psc
->configs
!= NULL
;
732 glx_screen_init(struct glx_screen
*psc
,
733 int screen
, struct glx_display
* priv
)
735 /* Initialize per screen dynamic client GLX extensions */
736 psc
->ext_list_first_time
= GL_TRUE
;
738 psc
->dpy
= priv
->dpy
;
741 getVisualConfigs(psc
, priv
, screen
);
742 getFBConfigs(psc
, priv
, screen
);
748 glx_screen_cleanup(struct glx_screen
*psc
)
751 glx_config_destroy_list(psc
->configs
);
752 free(psc
->effectiveGLXexts
);
753 psc
->configs
= NULL
; /* NOTE: just for paranoia */
756 glx_config_destroy_list(psc
->visuals
);
757 psc
->visuals
= NULL
; /* NOTE: just for paranoia */
759 free((char *) psc
->serverGLXexts
);
763 ** Allocate the memory for the per screen configs for each screen.
764 ** If that works then fetch the per screen configs data.
767 AllocAndFetchScreenConfigs(Display
* dpy
, struct glx_display
* priv
)
769 struct glx_screen
*psc
;
773 ** First allocate memory for the array of per screen configs.
775 screens
= ScreenCount(dpy
);
776 priv
->screens
= malloc(screens
* sizeof *priv
->screens
);
780 priv
->serverGLXversion
=
781 __glXQueryServerString(dpy
, priv
->majorOpcode
, 0, GLX_VERSION
);
782 if (priv
->serverGLXversion
== NULL
) {
783 FreeScreenConfigs(priv
);
787 for (i
= 0; i
< screens
; i
++, psc
++) {
789 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
790 #if defined(GLX_USE_DRM)
791 #if defined(HAVE_DRI3)
792 if (priv
->dri3Display
)
793 psc
= (*priv
->dri3Display
->createScreen
) (i
, priv
);
794 #endif /* HAVE_DRI3 */
795 if (psc
== NULL
&& priv
->dri2Display
)
796 psc
= (*priv
->dri2Display
->createScreen
) (i
, priv
);
797 if (psc
== NULL
&& priv
->driDisplay
)
798 psc
= (*priv
->driDisplay
->createScreen
) (i
, priv
);
799 #endif /* GLX_USE_DRM */
800 if (psc
== NULL
&& priv
->driswDisplay
)
801 psc
= (*priv
->driswDisplay
->createScreen
) (i
, priv
);
802 #endif /* GLX_DIRECT_RENDERING && !GLX_USE_APPLEGL */
804 #if defined(GLX_USE_APPLEGL)
806 psc
= applegl_create_screen(i
, priv
);
809 psc
= indirect_create_screen(i
, priv
);
811 priv
->screens
[i
] = psc
;
818 ** Initialize the client side extension code.
820 _X_HIDDEN
struct glx_display
*
821 __glXInitialize(Display
* dpy
)
823 struct glx_display
*dpyPriv
, *d
;
824 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
825 Bool glx_direct
, glx_accel
;
829 _XLockMutex(_Xglobal_lock
);
831 for (dpyPriv
= glx_displays
; dpyPriv
; dpyPriv
= dpyPriv
->next
) {
832 if (dpyPriv
->dpy
== dpy
) {
833 _XUnlockMutex(_Xglobal_lock
);
838 /* Drop the lock while we create the display private. */
839 _XUnlockMutex(_Xglobal_lock
);
841 dpyPriv
= calloc(1, sizeof *dpyPriv
);
845 dpyPriv
->codes
= XInitExtension(dpy
, __glXExtensionName
);
846 if (!dpyPriv
->codes
) {
852 dpyPriv
->majorOpcode
= dpyPriv
->codes
->major_opcode
;
853 dpyPriv
->serverGLXvendor
= 0x0;
854 dpyPriv
->serverGLXversion
= 0x0;
856 /* See if the versions are compatible. This GLX implementation does not
857 * work with servers that only support GLX 1.0.
859 if (!QueryVersion(dpy
, dpyPriv
->majorOpcode
,
860 &dpyPriv
->majorVersion
, &dpyPriv
->minorVersion
)
861 || (dpyPriv
->majorVersion
== 1 && dpyPriv
->minorVersion
< 1)) {
866 for (i
= 0; i
< __GLX_NUMBER_EVENTS
; i
++) {
867 XESetWireToEvent(dpy
, dpyPriv
->codes
->first_event
+ i
, __glXWireToEvent
);
868 XESetEventToWire(dpy
, dpyPriv
->codes
->first_event
+ i
, __glXEventToWire
);
871 XESetCloseDisplay(dpy
, dpyPriv
->codes
->extension
, __glXCloseDisplay
);
872 XESetErrorString (dpy
, dpyPriv
->codes
->extension
,__glXErrorString
);
874 dpyPriv
->glXDrawHash
= __glxHashCreate();
876 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
877 glx_direct
= (getenv("LIBGL_ALWAYS_INDIRECT") == NULL
);
878 glx_accel
= (getenv("LIBGL_ALWAYS_SOFTWARE") == NULL
);
880 dpyPriv
->drawHash
= __glxHashCreate();
883 ** Initialize the direct rendering per display data and functions.
884 ** Note: This _must_ be done before calling any other DRI routines
885 ** (e.g., those called in AllocAndFetchScreenConfigs).
887 #if defined(GLX_USE_DRM)
888 if (glx_direct
&& glx_accel
) {
889 #if defined(HAVE_DRI3)
890 if (!getenv("LIBGL_DRI3_DISABLE"))
891 dpyPriv
->dri3Display
= dri3_create_display(dpy
);
892 #endif /* HAVE_DRI3 */
893 dpyPriv
->dri2Display
= dri2CreateDisplay(dpy
);
894 dpyPriv
->driDisplay
= driCreateDisplay(dpy
);
896 #endif /* GLX_USE_DRM */
898 dpyPriv
->driswDisplay
= driswCreateDisplay(dpy
);
899 #endif /* GLX_DIRECT_RENDERING && !GLX_USE_APPLEGL */
901 #ifdef GLX_USE_APPLEGL
902 if (!applegl_create_display(dpyPriv
)) {
907 if (!AllocAndFetchScreenConfigs(dpy
, dpyPriv
)) {
912 __glX_send_client_info(dpyPriv
);
914 /* Grab the lock again and add the dispay private, unless somebody
915 * beat us to initializing on this display in the meantime. */
916 _XLockMutex(_Xglobal_lock
);
918 for (d
= glx_displays
; d
; d
= d
->next
) {
920 _XUnlockMutex(_Xglobal_lock
);
921 glx_display_free(dpyPriv
);
926 dpyPriv
->next
= glx_displays
;
927 glx_displays
= dpyPriv
;
929 _XUnlockMutex(_Xglobal_lock
);
935 ** Setup for sending a GLX command on dpy. Make sure the extension is
936 ** initialized. Try to avoid calling __glXInitialize as its kinda slow.
939 __glXSetupForCommand(Display
* dpy
)
941 struct glx_context
*gc
;
942 struct glx_display
*priv
;
944 /* If this thread has a current context, flush its rendering commands */
945 gc
= __glXGetCurrentContext();
946 if (gc
->currentDpy
) {
947 /* Flush rendering buffer of the current context, if any */
948 (void) __glXFlushRenderBuffer(gc
, gc
->pc
);
950 if (gc
->currentDpy
== dpy
) {
951 /* Use opcode from gc because its right */
952 return gc
->majorOpcode
;
956 ** Have to get info about argument dpy because it might be to
957 ** a different server
962 /* Forced to lookup extension via the slow initialize route */
963 priv
= __glXInitialize(dpy
);
967 return priv
->majorOpcode
;
971 * Flush the drawing command transport buffer.
973 * \param ctx Context whose transport buffer is to be flushed.
974 * \param pc Pointer to first unused buffer location.
977 * Modify this function to use \c ctx->pc instead of the explicit
981 __glXFlushRenderBuffer(struct glx_context
* ctx
, GLubyte
* pc
)
983 Display
*const dpy
= ctx
->currentDpy
;
984 xcb_connection_t
*c
= XGetXCBConnection(dpy
);
985 const GLint size
= pc
- ctx
->buf
;
987 if ((dpy
!= NULL
) && (size
> 0)) {
988 xcb_glx_render(c
, ctx
->currentContextTag
, size
,
989 (const uint8_t *) ctx
->buf
);
992 /* Reset pointer and return it */
999 * Send a portion of a GLXRenderLarge command to the server. The advantage of
1000 * this function over \c __glXSendLargeCommand is that callers can use the
1001 * data buffer in the GLX context and may be able to avoid allocating an
1002 * extra buffer. The disadvantage is the clients will have to do more
1003 * GLX protocol work (i.e., calculating \c totalRequests, etc.).
1005 * \sa __glXSendLargeCommand
1007 * \param gc GLX context
1008 * \param requestNumber Which part of the whole command is this? The first
1010 * \param totalRequests How many requests will there be?
1011 * \param data Command data.
1012 * \param dataLen Size, in bytes, of the command data.
1015 __glXSendLargeChunk(struct glx_context
* gc
, GLint requestNumber
,
1016 GLint totalRequests
, const GLvoid
* data
, GLint dataLen
)
1018 Display
*dpy
= gc
->currentDpy
;
1019 xcb_connection_t
*c
= XGetXCBConnection(dpy
);
1020 xcb_glx_render_large(c
, gc
->currentContextTag
, requestNumber
,
1021 totalRequests
, dataLen
, data
);
1026 * Send a command that is too large for the GLXRender protocol request.
1028 * Send a large command, one that is too large for some reason to
1029 * send using the GLXRender protocol request. One reason to send
1030 * a large command is to avoid copying the data.
1032 * \param ctx GLX context
1033 * \param header Header data.
1034 * \param headerLen Size, in bytes, of the header data. It is assumed that
1035 * the header data will always be small enough to fit in
1036 * a single X protocol packet.
1037 * \param data Command data.
1038 * \param dataLen Size, in bytes, of the command data.
1041 __glXSendLargeCommand(struct glx_context
* ctx
,
1042 const GLvoid
* header
, GLint headerLen
,
1043 const GLvoid
* data
, GLint dataLen
)
1046 GLint totalRequests
, requestNumber
;
1049 ** Calculate the maximum amount of data can be stuffed into a single
1050 ** packet. sz_xGLXRenderReq is added because bufSize is the maximum
1051 ** packet size minus sz_xGLXRenderReq.
1053 maxSize
= (ctx
->bufSize
+ sz_xGLXRenderReq
) - sz_xGLXRenderLargeReq
;
1054 totalRequests
= 1 + (dataLen
/ maxSize
);
1055 if (dataLen
% maxSize
)
1059 ** Send all of the command, except the large array, as one request.
1061 assert(headerLen
<= maxSize
);
1062 __glXSendLargeChunk(ctx
, 1, totalRequests
, header
, headerLen
);
1065 ** Send enough requests until the whole array is sent.
1067 for (requestNumber
= 2; requestNumber
<= (totalRequests
- 1);
1069 __glXSendLargeChunk(ctx
, requestNumber
, totalRequests
, data
, maxSize
);
1070 data
= (const GLvoid
*) (((const GLubyte
*) data
) + maxSize
);
1072 assert(dataLen
> 0);
1075 assert(dataLen
<= maxSize
);
1076 __glXSendLargeChunk(ctx
, requestNumber
, totalRequests
, data
, dataLen
);
1079 /************************************************************************/
1083 __glXDumpDrawBuffer(struct glx_context
* ctx
)
1085 GLubyte
*p
= ctx
->buf
;
1086 GLubyte
*end
= ctx
->pc
;
1087 GLushort opcode
, length
;
1091 opcode
= *((GLushort
*) p
);
1092 length
= *((GLushort
*) (p
+ 2));
1093 printf("%2x: %5d: ", opcode
, length
);
1096 while (length
> 0) {
1097 printf("%08x ", *((unsigned *) p
));