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"
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
);
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
;
145 if (awire
->sbc
< glxDraw
->lastEventSbc
)
146 glxDraw
->eventSbcWrap
+= 0x100000000;
147 glxDraw
->lastEventSbc
= awire
->sbc
;
148 aevent
->sbc
= awire
->sbc
+ glxDraw
->eventSbcWrap
;
152 /* client doesn't support server event */
159 /* We don't actually support this. It doesn't make sense for clients to
160 * send each other GLX events.
163 __glXEventToWire(Display
*dpy
, XEvent
*event
, xEvent
*wire
)
165 struct glx_display
*glx_dpy
= __glXInitialize(dpy
);
170 switch (event
->type
) {
175 case GLX_EXCHANGE_COMPLETE_INTEL
:
177 case GLX_COPY_COMPLETE_INTEL
:
179 case GLX_FLIP_COMPLETE_INTEL
:
182 /* client doesn't support server event */
189 /************************************************************************/
191 ** Free the per screen configs data as well as the array of
192 ** __glXScreenConfigs.
195 FreeScreenConfigs(struct glx_display
* priv
)
197 struct glx_screen
*psc
;
200 /* Free screen configuration information */
201 screens
= ScreenCount(priv
->dpy
);
202 for (i
= 0; i
< screens
; i
++) {
203 psc
= priv
->screens
[i
];
204 glx_screen_cleanup(psc
);
206 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
207 if (psc
->driScreen
) {
208 psc
->driScreen
->destroyScreen(psc
);
216 free((char *) priv
->screens
);
217 priv
->screens
= NULL
;
221 glx_display_free(struct glx_display
*priv
)
223 struct glx_context
*gc
;
225 gc
= __glXGetCurrentContext();
226 if (priv
->dpy
== gc
->currentDpy
) {
227 gc
->vtable
->destroy(gc
);
228 __glXSetCurrentContextNull();
231 FreeScreenConfigs(priv
);
232 free((char *) priv
->serverGLXvendor
);
233 free((char *) priv
->serverGLXversion
);
235 __glxHashDestroy(priv
->glXDrawHash
);
237 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
238 __glxHashDestroy(priv
->drawHash
);
240 /* Free the direct rendering per display data */
241 if (priv
->driswDisplay
)
242 (*priv
->driswDisplay
->destroyDisplay
) (priv
->driswDisplay
);
243 priv
->driswDisplay
= NULL
;
245 if (priv
->driDisplay
)
246 (*priv
->driDisplay
->destroyDisplay
) (priv
->driDisplay
);
247 priv
->driDisplay
= NULL
;
249 if (priv
->dri2Display
)
250 (*priv
->dri2Display
->destroyDisplay
) (priv
->dri2Display
);
251 priv
->dri2Display
= NULL
;
258 __glXCloseDisplay(Display
* dpy
, XExtCodes
* codes
)
260 struct glx_display
*priv
, **prev
;
262 _XLockMutex(_Xglobal_lock
);
263 prev
= &glx_displays
;
264 for (priv
= glx_displays
; priv
; prev
= &priv
->next
, priv
= priv
->next
) {
265 if (priv
->dpy
== dpy
) {
270 _XUnlockMutex(_Xglobal_lock
);
273 glx_display_free(priv
);
279 ** Query the version of the GLX extension. This procedure works even if
280 ** the client extension is not completely set up.
283 QueryVersion(Display
* dpy
, int opcode
, int *major
, int *minor
)
285 xcb_connection_t
*c
= XGetXCBConnection(dpy
);
286 xcb_glx_query_version_reply_t
*reply
= xcb_glx_query_version_reply(c
,
287 xcb_glx_query_version
296 if (reply
->major_version
!= GLX_MAJOR_VERSION
) {
300 *major
= reply
->major_version
;
301 *minor
= min(reply
->minor_version
, GLX_MINOR_VERSION
);
307 * We don't want to enable this GLX_OML_swap_method in glxext.h,
308 * because we can't support it. The X server writes it out though,
309 * so we should handle it somehow, to avoid false warnings.
312 IGNORE_GLX_SWAP_METHOD_OML
= 0x8060
317 convert_from_x_visual_type(int visualType
)
319 static const int glx_visual_types
[] = {
320 GLX_STATIC_GRAY
, GLX_GRAY_SCALE
,
321 GLX_STATIC_COLOR
, GLX_PSEUDO_COLOR
,
322 GLX_TRUE_COLOR
, GLX_DIRECT_COLOR
325 if (visualType
< ARRAY_SIZE(glx_visual_types
))
326 return glx_visual_types
[visualType
];
332 * getVisualConfigs uses the !tagged_only path.
333 * getFBConfigs uses the tagged_only path.
336 __glXInitializeVisualConfigFromTags(struct glx_config
* config
, int count
,
337 const INT32
* bp
, Bool tagged_only
,
338 Bool fbconfig_style_tags
)
341 GLint renderType
= 0;
344 /* Copy in the first set of properties */
345 config
->visualID
= *bp
++;
347 config
->visualType
= convert_from_x_visual_type(*bp
++);
349 config
->rgbMode
= *bp
++;
351 config
->redBits
= *bp
++;
352 config
->greenBits
= *bp
++;
353 config
->blueBits
= *bp
++;
354 config
->alphaBits
= *bp
++;
355 config
->accumRedBits
= *bp
++;
356 config
->accumGreenBits
= *bp
++;
357 config
->accumBlueBits
= *bp
++;
358 config
->accumAlphaBits
= *bp
++;
360 config
->doubleBufferMode
= *bp
++;
361 config
->stereoMode
= *bp
++;
363 config
->rgbBits
= *bp
++;
364 config
->depthBits
= *bp
++;
365 config
->stencilBits
= *bp
++;
366 config
->numAuxBuffers
= *bp
++;
367 config
->level
= *bp
++;
369 #ifdef GLX_USE_APPLEGL
370 /* AppleSGLX supports pixmap and pbuffers with all config. */
371 config
->drawableType
= GLX_WINDOW_BIT
| GLX_PIXMAP_BIT
| GLX_PBUFFER_BIT
;
372 /* Unfortunately this can create an ABI compatibility problem. */
375 count
-= __GLX_MIN_CONFIG_PROPS
;
379 config
->sRGBCapable
= GL_FALSE
;
382 ** Additional properties may be in a list at the end
383 ** of the reply. They are in pairs of property type
384 ** and property value.
387 #define FETCH_OR_SET(tag) \
388 config-> tag = ( fbconfig_style_tags ) ? *bp++ : 1
390 for (i
= 0; i
< count
; i
+= 2) {
391 long int tag
= *bp
++;
395 FETCH_OR_SET(rgbMode
);
397 case GLX_BUFFER_SIZE
:
398 config
->rgbBits
= *bp
++;
401 config
->level
= *bp
++;
403 case GLX_DOUBLEBUFFER
:
404 FETCH_OR_SET(doubleBufferMode
);
407 FETCH_OR_SET(stereoMode
);
409 case GLX_AUX_BUFFERS
:
410 config
->numAuxBuffers
= *bp
++;
413 config
->redBits
= *bp
++;
416 config
->greenBits
= *bp
++;
419 config
->blueBits
= *bp
++;
422 config
->alphaBits
= *bp
++;
425 config
->depthBits
= *bp
++;
427 case GLX_STENCIL_SIZE
:
428 config
->stencilBits
= *bp
++;
430 case GLX_ACCUM_RED_SIZE
:
431 config
->accumRedBits
= *bp
++;
433 case GLX_ACCUM_GREEN_SIZE
:
434 config
->accumGreenBits
= *bp
++;
436 case GLX_ACCUM_BLUE_SIZE
:
437 config
->accumBlueBits
= *bp
++;
439 case GLX_ACCUM_ALPHA_SIZE
:
440 config
->accumAlphaBits
= *bp
++;
442 case GLX_VISUAL_CAVEAT_EXT
:
443 config
->visualRating
= *bp
++;
445 case GLX_X_VISUAL_TYPE
:
446 config
->visualType
= *bp
++;
448 case GLX_TRANSPARENT_TYPE
:
449 config
->transparentPixel
= *bp
++;
451 case GLX_TRANSPARENT_INDEX_VALUE
:
452 config
->transparentIndex
= *bp
++;
454 case GLX_TRANSPARENT_RED_VALUE
:
455 config
->transparentRed
= *bp
++;
457 case GLX_TRANSPARENT_GREEN_VALUE
:
458 config
->transparentGreen
= *bp
++;
460 case GLX_TRANSPARENT_BLUE_VALUE
:
461 config
->transparentBlue
= *bp
++;
463 case GLX_TRANSPARENT_ALPHA_VALUE
:
464 config
->transparentAlpha
= *bp
++;
467 config
->visualID
= *bp
++;
469 case GLX_DRAWABLE_TYPE
:
470 config
->drawableType
= *bp
++;
471 #ifdef GLX_USE_APPLEGL
472 /* AppleSGLX supports pixmap and pbuffers with all config. */
473 config
->drawableType
|= GLX_WINDOW_BIT
| GLX_PIXMAP_BIT
| GLX_PBUFFER_BIT
;
476 case GLX_RENDER_TYPE
: /* fbconfig render type bits */
479 case GLX_X_RENDERABLE
:
480 config
->xRenderable
= *bp
++;
482 case GLX_FBCONFIG_ID
:
483 config
->fbconfigID
= *bp
++;
485 case GLX_MAX_PBUFFER_WIDTH
:
486 config
->maxPbufferWidth
= *bp
++;
488 case GLX_MAX_PBUFFER_HEIGHT
:
489 config
->maxPbufferHeight
= *bp
++;
491 case GLX_MAX_PBUFFER_PIXELS
:
492 config
->maxPbufferPixels
= *bp
++;
494 #ifndef GLX_USE_APPLEGL
495 case GLX_OPTIMAL_PBUFFER_WIDTH_SGIX
:
496 config
->optimalPbufferWidth
= *bp
++;
498 case GLX_OPTIMAL_PBUFFER_HEIGHT_SGIX
:
499 config
->optimalPbufferHeight
= *bp
++;
501 case GLX_VISUAL_SELECT_GROUP_SGIX
:
502 config
->visualSelectGroup
= *bp
++;
504 case GLX_SWAP_METHOD_OML
:
505 config
->swapMethod
= *bp
++;
508 case GLX_SAMPLE_BUFFERS_SGIS
:
509 config
->sampleBuffers
= *bp
++;
511 case GLX_SAMPLES_SGIS
:
512 config
->samples
= *bp
++;
514 #ifdef GLX_USE_APPLEGL
515 case IGNORE_GLX_SWAP_METHOD_OML
:
516 /* We ignore this tag. See the comment above this function. */
520 case GLX_BIND_TO_TEXTURE_RGB_EXT
:
521 config
->bindToTextureRgb
= *bp
++;
523 case GLX_BIND_TO_TEXTURE_RGBA_EXT
:
524 config
->bindToTextureRgba
= *bp
++;
526 case GLX_BIND_TO_MIPMAP_TEXTURE_EXT
:
527 config
->bindToMipmapTexture
= *bp
++;
529 case GLX_BIND_TO_TEXTURE_TARGETS_EXT
:
530 config
->bindToTextureTargets
= *bp
++;
532 case GLX_Y_INVERTED_EXT
:
533 config
->yInverted
= *bp
++;
536 case GLX_FRAMEBUFFER_SRGB_CAPABLE_EXT
:
537 config
->sRGBCapable
= *bp
++;
541 if (fbconfig_style_tags
)
548 if(getenv("LIBGL_DIAGNOSTIC")) {
549 long int tagvalue
= *bp
++;
550 fprintf(stderr
, "WARNING: unknown GLX tag from server: "
551 "tag 0x%lx value 0x%lx\n", tag
, tagvalue
);
553 /* Ignore the unrecognized tag's value */
560 if (renderType
!= 0 && renderType
!= GLX_DONT_CARE
) {
561 config
->renderType
= renderType
;
562 config
->floatMode
= (renderType
&
563 (GLX_RGBA_FLOAT_BIT_ARB
|GLX_RGBA_UNSIGNED_FLOAT_BIT_EXT
)) != 0;
565 /* If there wasn't GLX_RENDER_TYPE property, set it based on
566 * config->rgbMode. The only way to communicate that the config is
567 * floating-point is via GLX_RENDER_TYPE, so this cannot be a float
571 (config
->rgbMode
) ? GLX_RGBA_BIT
: GLX_COLOR_INDEX_BIT
;
574 /* The GLX_ARB_fbconfig_float spec says:
576 * "Note that floating point rendering is only supported for
577 * GLXPbuffer drawables."
579 if (config
->floatMode
)
580 config
->drawableType
&= ~(GLX_WINDOW_BIT
|GLX_PIXMAP_BIT
);
583 static struct glx_config
*
584 createConfigsFromProperties(Display
* dpy
, int nvisuals
, int nprops
,
585 int screen
, GLboolean tagged_only
)
587 INT32 buf
[__GLX_TOTAL_CONFIG
], *props
;
589 struct glx_config
*modes
, *m
;
595 /* FIXME: Is the __GLX_MIN_CONFIG_PROPS test correct for FBconfigs? */
597 /* Check number of properties */
598 if (nprops
< __GLX_MIN_CONFIG_PROPS
|| nprops
> __GLX_MAX_CONFIG_PROPS
)
601 /* Allocate memory for our config structure */
602 modes
= glx_config_create_list(nvisuals
);
606 prop_size
= nprops
* __GLX_SIZE_INT32
;
607 if (prop_size
<= sizeof(buf
))
610 props
= malloc(prop_size
);
612 /* Read each config structure and convert it into our format */
614 for (i
= 0; i
< nvisuals
; i
++) {
615 _XRead(dpy
, (char *) props
, prop_size
);
616 #ifdef GLX_USE_APPLEGL
617 /* Older X servers don't send this so we default it here. */
618 m
->drawableType
= GLX_WINDOW_BIT
;
621 * The XQuartz 2.3.2.1 X server doesn't set this properly, so
622 * set the proper bits here.
623 * AppleSGLX supports windows, pixmaps, and pbuffers with all config.
625 m
->drawableType
= GLX_WINDOW_BIT
| GLX_PIXMAP_BIT
| GLX_PBUFFER_BIT
;
627 __glXInitializeVisualConfigFromTags(m
, nprops
, props
,
628 tagged_only
, GL_TRUE
);
640 getVisualConfigs(struct glx_screen
*psc
,
641 struct glx_display
*priv
, int screen
)
643 xGLXGetVisualConfigsReq
*req
;
644 xGLXGetVisualConfigsReply reply
;
645 Display
*dpy
= priv
->dpy
;
650 GetReq(GLXGetVisualConfigs
, req
);
651 req
->reqType
= priv
->majorOpcode
;
652 req
->glxCode
= X_GLXGetVisualConfigs
;
653 req
->screen
= screen
;
655 if (!_XReply(dpy
, (xReply
*) & reply
, 0, False
))
658 psc
->visuals
= createConfigsFromProperties(dpy
,
665 return psc
->visuals
!= NULL
;
669 getFBConfigs(struct glx_screen
*psc
, struct glx_display
*priv
, int screen
)
671 xGLXGetFBConfigsReq
*fb_req
;
672 xGLXGetFBConfigsSGIXReq
*sgi_req
;
673 xGLXVendorPrivateWithReplyReq
*vpreq
;
674 xGLXGetFBConfigsReply reply
;
675 Display
*dpy
= priv
->dpy
;
678 __glXQueryServerString(dpy
, priv
->majorOpcode
, screen
, GLX_EXTENSIONS
);
680 if (psc
->serverGLXexts
== NULL
) {
687 if (atof(priv
->serverGLXversion
) >= 1.3) {
688 GetReq(GLXGetFBConfigs
, fb_req
);
689 fb_req
->reqType
= priv
->majorOpcode
;
690 fb_req
->glxCode
= X_GLXGetFBConfigs
;
691 fb_req
->screen
= screen
;
693 else if (strstr(psc
->serverGLXexts
, "GLX_SGIX_fbconfig") != NULL
) {
694 GetReqExtra(GLXVendorPrivateWithReply
,
695 sz_xGLXGetFBConfigsSGIXReq
-
696 sz_xGLXVendorPrivateWithReplyReq
, vpreq
);
697 sgi_req
= (xGLXGetFBConfigsSGIXReq
*) vpreq
;
698 sgi_req
->reqType
= priv
->majorOpcode
;
699 sgi_req
->glxCode
= X_GLXVendorPrivateWithReply
;
700 sgi_req
->vendorCode
= X_GLXvop_GetFBConfigsSGIX
;
701 sgi_req
->screen
= screen
;
706 if (!_XReply(dpy
, (xReply
*) & reply
, 0, False
))
709 psc
->configs
= createConfigsFromProperties(dpy
,
711 reply
.numAttribs
* 2,
716 return psc
->configs
!= NULL
;
720 glx_screen_init(struct glx_screen
*psc
,
721 int screen
, struct glx_display
* priv
)
723 /* Initialize per screen dynamic client GLX extensions */
724 psc
->ext_list_first_time
= GL_TRUE
;
726 psc
->dpy
= priv
->dpy
;
729 getVisualConfigs(psc
, priv
, screen
);
730 getFBConfigs(psc
, priv
, screen
);
736 glx_screen_cleanup(struct glx_screen
*psc
)
739 glx_config_destroy_list(psc
->configs
);
740 free(psc
->effectiveGLXexts
);
741 psc
->configs
= NULL
; /* NOTE: just for paranoia */
744 glx_config_destroy_list(psc
->visuals
);
745 psc
->visuals
= NULL
; /* NOTE: just for paranoia */
747 free((char *) psc
->serverGLXexts
);
751 ** Allocate the memory for the per screen configs for each screen.
752 ** If that works then fetch the per screen configs data.
755 AllocAndFetchScreenConfigs(Display
* dpy
, struct glx_display
* priv
)
757 struct glx_screen
*psc
;
761 ** First allocate memory for the array of per screen configs.
763 screens
= ScreenCount(dpy
);
764 priv
->screens
= malloc(screens
* sizeof *priv
->screens
);
768 priv
->serverGLXversion
=
769 __glXQueryServerString(dpy
, priv
->majorOpcode
, 0, GLX_VERSION
);
770 if (priv
->serverGLXversion
== NULL
) {
771 FreeScreenConfigs(priv
);
775 for (i
= 0; i
< screens
; i
++, psc
++) {
777 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
778 #if defined(HAVE_DRI3)
779 if (priv
->dri3Display
)
780 psc
= (*priv
->dri3Display
->createScreen
) (i
, priv
);
782 if (psc
== NULL
&& priv
->dri2Display
)
783 psc
= (*priv
->dri2Display
->createScreen
) (i
, priv
);
784 if (psc
== NULL
&& priv
->driDisplay
)
785 psc
= (*priv
->driDisplay
->createScreen
) (i
, priv
);
786 if (psc
== NULL
&& priv
->driswDisplay
)
787 psc
= (*priv
->driswDisplay
->createScreen
) (i
, priv
);
789 #if defined(GLX_USE_APPLEGL)
791 psc
= applegl_create_screen(i
, priv
);
794 psc
= indirect_create_screen(i
, priv
);
796 priv
->screens
[i
] = psc
;
803 ** Initialize the client side extension code.
805 _X_HIDDEN
struct glx_display
*
806 __glXInitialize(Display
* dpy
)
808 struct glx_display
*dpyPriv
, *d
;
809 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
810 Bool glx_direct
, glx_accel
;
814 _XLockMutex(_Xglobal_lock
);
816 for (dpyPriv
= glx_displays
; dpyPriv
; dpyPriv
= dpyPriv
->next
) {
817 if (dpyPriv
->dpy
== dpy
) {
818 _XUnlockMutex(_Xglobal_lock
);
823 /* Drop the lock while we create the display private. */
824 _XUnlockMutex(_Xglobal_lock
);
826 dpyPriv
= calloc(1, sizeof *dpyPriv
);
830 dpyPriv
->codes
= XInitExtension(dpy
, __glXExtensionName
);
831 if (!dpyPriv
->codes
) {
833 _XUnlockMutex(_Xglobal_lock
);
838 dpyPriv
->majorOpcode
= dpyPriv
->codes
->major_opcode
;
839 dpyPriv
->serverGLXvendor
= 0x0;
840 dpyPriv
->serverGLXversion
= 0x0;
842 /* See if the versions are compatible. This GLX implementation does not
843 * work with servers that only support GLX 1.0.
845 if (!QueryVersion(dpy
, dpyPriv
->majorOpcode
,
846 &dpyPriv
->majorVersion
, &dpyPriv
->minorVersion
)
847 || (dpyPriv
->majorVersion
== 1 && dpyPriv
->minorVersion
< 1)) {
849 _XUnlockMutex(_Xglobal_lock
);
853 for (i
= 0; i
< __GLX_NUMBER_EVENTS
; i
++) {
854 XESetWireToEvent(dpy
, dpyPriv
->codes
->first_event
+ i
, __glXWireToEvent
);
855 XESetEventToWire(dpy
, dpyPriv
->codes
->first_event
+ i
, __glXEventToWire
);
858 XESetCloseDisplay(dpy
, dpyPriv
->codes
->extension
, __glXCloseDisplay
);
859 XESetErrorString (dpy
, dpyPriv
->codes
->extension
,__glXErrorString
);
861 dpyPriv
->glXDrawHash
= __glxHashCreate();
863 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
864 glx_direct
= (getenv("LIBGL_ALWAYS_INDIRECT") == NULL
);
865 glx_accel
= (getenv("LIBGL_ALWAYS_SOFTWARE") == NULL
);
867 dpyPriv
->drawHash
= __glxHashCreate();
870 ** Initialize the direct rendering per display data and functions.
871 ** Note: This _must_ be done before calling any other DRI routines
872 ** (e.g., those called in AllocAndFetchScreenConfigs).
874 if (glx_direct
&& glx_accel
) {
875 #if defined(HAVE_DRI3)
876 if (!getenv("LIBGL_DRI3_DISABLE"))
877 dpyPriv
->dri3Display
= dri3_create_display(dpy
);
879 dpyPriv
->dri2Display
= dri2CreateDisplay(dpy
);
880 dpyPriv
->driDisplay
= driCreateDisplay(dpy
);
883 dpyPriv
->driswDisplay
= driswCreateDisplay(dpy
);
886 #ifdef GLX_USE_APPLEGL
887 if (!applegl_create_display(dpyPriv
)) {
892 if (!AllocAndFetchScreenConfigs(dpy
, dpyPriv
)) {
897 __glX_send_client_info(dpyPriv
);
899 /* Grab the lock again and add the dispay private, unless somebody
900 * beat us to initializing on this display in the meantime. */
901 _XLockMutex(_Xglobal_lock
);
903 for (d
= glx_displays
; d
; d
= d
->next
) {
905 _XUnlockMutex(_Xglobal_lock
);
906 glx_display_free(dpyPriv
);
911 dpyPriv
->next
= glx_displays
;
912 glx_displays
= dpyPriv
;
914 _XUnlockMutex(_Xglobal_lock
);
920 ** Setup for sending a GLX command on dpy. Make sure the extension is
921 ** initialized. Try to avoid calling __glXInitialize as its kinda slow.
924 __glXSetupForCommand(Display
* dpy
)
926 struct glx_context
*gc
;
927 struct glx_display
*priv
;
929 /* If this thread has a current context, flush its rendering commands */
930 gc
= __glXGetCurrentContext();
931 if (gc
->currentDpy
) {
932 /* Flush rendering buffer of the current context, if any */
933 (void) __glXFlushRenderBuffer(gc
, gc
->pc
);
935 if (gc
->currentDpy
== dpy
) {
936 /* Use opcode from gc because its right */
937 return gc
->majorOpcode
;
941 ** Have to get info about argument dpy because it might be to
942 ** a different server
947 /* Forced to lookup extension via the slow initialize route */
948 priv
= __glXInitialize(dpy
);
952 return priv
->majorOpcode
;
956 * Flush the drawing command transport buffer.
958 * \param ctx Context whose transport buffer is to be flushed.
959 * \param pc Pointer to first unused buffer location.
962 * Modify this function to use \c ctx->pc instead of the explicit
966 __glXFlushRenderBuffer(struct glx_context
* ctx
, GLubyte
* pc
)
968 Display
*const dpy
= ctx
->currentDpy
;
969 xcb_connection_t
*c
= XGetXCBConnection(dpy
);
970 const GLint size
= pc
- ctx
->buf
;
972 if ((dpy
!= NULL
) && (size
> 0)) {
973 xcb_glx_render(c
, ctx
->currentContextTag
, size
,
974 (const uint8_t *) ctx
->buf
);
977 /* Reset pointer and return it */
984 * Send a portion of a GLXRenderLarge command to the server. The advantage of
985 * this function over \c __glXSendLargeCommand is that callers can use the
986 * data buffer in the GLX context and may be able to avoid allocating an
987 * extra buffer. The disadvantage is the clients will have to do more
988 * GLX protocol work (i.e., calculating \c totalRequests, etc.).
990 * \sa __glXSendLargeCommand
992 * \param gc GLX context
993 * \param requestNumber Which part of the whole command is this? The first
995 * \param totalRequests How many requests will there be?
996 * \param data Command data.
997 * \param dataLen Size, in bytes, of the command data.
1000 __glXSendLargeChunk(struct glx_context
* gc
, GLint requestNumber
,
1001 GLint totalRequests
, const GLvoid
* data
, GLint dataLen
)
1003 Display
*dpy
= gc
->currentDpy
;
1004 xcb_connection_t
*c
= XGetXCBConnection(dpy
);
1005 xcb_glx_render_large(c
, gc
->currentContextTag
, requestNumber
,
1006 totalRequests
, dataLen
, data
);
1011 * Send a command that is too large for the GLXRender protocol request.
1013 * Send a large command, one that is too large for some reason to
1014 * send using the GLXRender protocol request. One reason to send
1015 * a large command is to avoid copying the data.
1017 * \param ctx GLX context
1018 * \param header Header data.
1019 * \param headerLen Size, in bytes, of the header data. It is assumed that
1020 * the header data will always be small enough to fit in
1021 * a single X protocol packet.
1022 * \param data Command data.
1023 * \param dataLen Size, in bytes, of the command data.
1026 __glXSendLargeCommand(struct glx_context
* ctx
,
1027 const GLvoid
* header
, GLint headerLen
,
1028 const GLvoid
* data
, GLint dataLen
)
1031 GLint totalRequests
, requestNumber
;
1034 ** Calculate the maximum amount of data can be stuffed into a single
1035 ** packet. sz_xGLXRenderReq is added because bufSize is the maximum
1036 ** packet size minus sz_xGLXRenderReq.
1038 maxSize
= (ctx
->bufSize
+ sz_xGLXRenderReq
) - sz_xGLXRenderLargeReq
;
1039 totalRequests
= 1 + (dataLen
/ maxSize
);
1040 if (dataLen
% maxSize
)
1044 ** Send all of the command, except the large array, as one request.
1046 assert(headerLen
<= maxSize
);
1047 __glXSendLargeChunk(ctx
, 1, totalRequests
, header
, headerLen
);
1050 ** Send enough requests until the whole array is sent.
1052 for (requestNumber
= 2; requestNumber
<= (totalRequests
- 1);
1054 __glXSendLargeChunk(ctx
, requestNumber
, totalRequests
, data
, maxSize
);
1055 data
= (const GLvoid
*) (((const GLubyte
*) data
) + maxSize
);
1057 assert(dataLen
> 0);
1060 assert(dataLen
<= maxSize
);
1061 __glXSendLargeChunk(ctx
, requestNumber
, totalRequests
, data
, dataLen
);
1064 /************************************************************************/
1068 __glXDumpDrawBuffer(struct glx_context
* ctx
)
1070 GLubyte
*p
= ctx
->buf
;
1071 GLubyte
*end
= ctx
->pc
;
1072 GLushort opcode
, length
;
1076 opcode
= *((GLushort
*) p
);
1077 length
= *((GLushort
*) (p
+ 2));
1078 printf("%2x: %5d: ", opcode
, length
);
1081 while (length
> 0) {
1082 printf("%08x ", *((unsigned *) p
));