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 /* No easy symbol to test for this, as GLX_BufferSwapComplete is
134 * defined in the local glx.h header, but the
135 * xGLXBufferSwapComplete typedef is only available in new versions
136 * of the external glxproto.h header, which doesn't have any
137 * testable versioning define.
139 * I'll use the related DRI2 define, in the hope that we won't
140 * receive these events unless we know how to ask for them:
142 #ifdef X_DRI2SwapBuffers
143 case GLX_BufferSwapComplete
:
145 GLXBufferSwapComplete
*aevent
= (GLXBufferSwapComplete
*)event
;
146 xGLXBufferSwapComplete
*awire
= (xGLXBufferSwapComplete
*)wire
;
147 aevent
->event_type
= awire
->event_type
;
148 aevent
->drawable
= awire
->drawable
;
149 aevent
->ust
= ((CARD64
)awire
->ust_hi
<< 32) | awire
->ust_lo
;
150 aevent
->msc
= ((CARD64
)awire
->msc_hi
<< 32) | awire
->msc_lo
;
151 aevent
->sbc
= ((CARD64
)awire
->sbc_hi
<< 32) | awire
->sbc_lo
;
156 /* client doesn't support server event */
163 /* We don't actually support this. It doesn't make sense for clients to
164 * send each other GLX events.
167 __glXEventToWire(Display
*dpy
, XEvent
*event
, xEvent
*wire
)
169 struct glx_display
*glx_dpy
= __glXInitialize(dpy
);
174 switch (event
->type
) {
179 case GLX_EXCHANGE_COMPLETE_INTEL
:
181 case GLX_COPY_COMPLETE_INTEL
:
183 case GLX_FLIP_COMPLETE_INTEL
:
186 /* client doesn't support server event */
193 /************************************************************************/
195 ** Free the per screen configs data as well as the array of
196 ** __glXScreenConfigs.
199 FreeScreenConfigs(struct glx_display
* priv
)
201 struct glx_screen
*psc
;
204 /* Free screen configuration information */
205 screens
= ScreenCount(priv
->dpy
);
206 for (i
= 0; i
< screens
; i
++) {
207 psc
= priv
->screens
[i
];
209 glx_config_destroy_list(psc
->configs
);
210 if (psc
->effectiveGLXexts
)
211 Xfree(psc
->effectiveGLXexts
);
212 psc
->configs
= NULL
; /* NOTE: just for paranoia */
215 glx_config_destroy_list(psc
->visuals
);
216 psc
->visuals
= NULL
; /* NOTE: just for paranoia */
218 Xfree((char *) psc
->serverGLXexts
);
220 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
221 if (psc
->driScreen
) {
222 psc
->driScreen
->destroyScreen(psc
);
230 XFree((char *) priv
->screens
);
231 priv
->screens
= NULL
;
235 glx_display_free(struct glx_display
*priv
)
237 struct glx_context
*gc
;
239 gc
= __glXGetCurrentContext();
240 if (priv
->dpy
== gc
->currentDpy
) {
241 gc
->vtable
->destroy(gc
);
242 __glXSetCurrentContextNull();
245 FreeScreenConfigs(priv
);
246 if (priv
->serverGLXvendor
)
247 Xfree((char *) priv
->serverGLXvendor
);
248 if (priv
->serverGLXversion
)
249 Xfree((char *) priv
->serverGLXversion
);
251 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
252 __glxHashDestroy(priv
->drawHash
);
254 /* Free the direct rendering per display data */
255 if (priv
->driswDisplay
)
256 (*priv
->driswDisplay
->destroyDisplay
) (priv
->driswDisplay
);
257 priv
->driswDisplay
= NULL
;
259 if (priv
->driDisplay
)
260 (*priv
->driDisplay
->destroyDisplay
) (priv
->driDisplay
);
261 priv
->driDisplay
= NULL
;
263 if (priv
->dri2Display
)
264 (*priv
->dri2Display
->destroyDisplay
) (priv
->dri2Display
);
265 priv
->dri2Display
= NULL
;
268 Xfree((char *) priv
);
272 __glXCloseDisplay(Display
* dpy
, XExtCodes
* codes
)
274 struct glx_display
*priv
, **prev
;
276 _XLockMutex(_Xglobal_lock
);
277 prev
= &glx_displays
;
278 for (priv
= glx_displays
; priv
; prev
= &priv
->next
, priv
= priv
->next
) {
279 if (priv
->dpy
== dpy
) {
280 (*prev
) = priv
->next
;
284 _XUnlockMutex(_Xglobal_lock
);
286 glx_display_free(priv
);
292 ** Query the version of the GLX extension. This procedure works even if
293 ** the client extension is not completely set up.
296 QueryVersion(Display
* dpy
, int opcode
, int *major
, int *minor
)
299 xcb_connection_t
*c
= XGetXCBConnection(dpy
);
300 xcb_glx_query_version_reply_t
*reply
= xcb_glx_query_version_reply(c
,
301 xcb_glx_query_version
307 if (reply
->major_version
!= GLX_MAJOR_VERSION
) {
311 *major
= reply
->major_version
;
312 *minor
= min(reply
->minor_version
, GLX_MINOR_VERSION
);
316 xGLXQueryVersionReq
*req
;
317 xGLXQueryVersionReply reply
;
319 /* Send the glXQueryVersion request */
321 GetReq(GLXQueryVersion
, req
);
322 req
->reqType
= opcode
;
323 req
->glxCode
= X_GLXQueryVersion
;
324 req
->majorVersion
= GLX_MAJOR_VERSION
;
325 req
->minorVersion
= GLX_MINOR_VERSION
;
326 _XReply(dpy
, (xReply
*) & reply
, 0, False
);
330 if (reply
.majorVersion
!= GLX_MAJOR_VERSION
) {
332 ** The server does not support the same major release as this
337 *major
= reply
.majorVersion
;
338 *minor
= min(reply
.minorVersion
, GLX_MINOR_VERSION
);
344 * We don't want to enable this GLX_OML_swap_method in glxext.h,
345 * because we can't support it. The X server writes it out though,
346 * so we should handle it somehow, to avoid false warnings.
349 IGNORE_GLX_SWAP_METHOD_OML
= 0x8060
354 convert_from_x_visual_type(int visualType
)
356 static const int glx_visual_types
[] = {
357 GLX_STATIC_GRAY
, GLX_GRAY_SCALE
,
358 GLX_STATIC_COLOR
, GLX_PSEUDO_COLOR
,
359 GLX_TRUE_COLOR
, GLX_DIRECT_COLOR
362 if (visualType
< ARRAY_SIZE(glx_visual_types
))
363 return glx_visual_types
[visualType
];
369 * getVisualConfigs uses the !tagged_only path.
370 * getFBConfigs uses the tagged_only path.
373 __glXInitializeVisualConfigFromTags(struct glx_config
* config
, int count
,
374 const INT32
* bp
, Bool tagged_only
,
375 Bool fbconfig_style_tags
)
380 /* Copy in the first set of properties */
381 config
->visualID
= *bp
++;
383 config
->visualType
= convert_from_x_visual_type(*bp
++);
385 config
->rgbMode
= *bp
++;
387 config
->redBits
= *bp
++;
388 config
->greenBits
= *bp
++;
389 config
->blueBits
= *bp
++;
390 config
->alphaBits
= *bp
++;
391 config
->accumRedBits
= *bp
++;
392 config
->accumGreenBits
= *bp
++;
393 config
->accumBlueBits
= *bp
++;
394 config
->accumAlphaBits
= *bp
++;
396 config
->doubleBufferMode
= *bp
++;
397 config
->stereoMode
= *bp
++;
399 config
->rgbBits
= *bp
++;
400 config
->depthBits
= *bp
++;
401 config
->stencilBits
= *bp
++;
402 config
->numAuxBuffers
= *bp
++;
403 config
->level
= *bp
++;
405 #ifdef GLX_USE_APPLEGL
406 /* AppleSGLX supports pixmap and pbuffers with all config. */
407 config
->drawableType
= GLX_WINDOW_BIT
| GLX_PIXMAP_BIT
| GLX_PBUFFER_BIT
;
408 /* Unfortunately this can create an ABI compatibility problem. */
411 count
-= __GLX_MIN_CONFIG_PROPS
;
416 ** Additional properties may be in a list at the end
417 ** of the reply. They are in pairs of property type
418 ** and property value.
421 #define FETCH_OR_SET(tag) \
422 config-> tag = ( fbconfig_style_tags ) ? *bp++ : 1
424 for (i
= 0; i
< count
; i
+= 2) {
425 long int tag
= *bp
++;
429 FETCH_OR_SET(rgbMode
);
431 case GLX_BUFFER_SIZE
:
432 config
->rgbBits
= *bp
++;
435 config
->level
= *bp
++;
437 case GLX_DOUBLEBUFFER
:
438 FETCH_OR_SET(doubleBufferMode
);
441 FETCH_OR_SET(stereoMode
);
443 case GLX_AUX_BUFFERS
:
444 config
->numAuxBuffers
= *bp
++;
447 config
->redBits
= *bp
++;
450 config
->greenBits
= *bp
++;
453 config
->blueBits
= *bp
++;
456 config
->alphaBits
= *bp
++;
459 config
->depthBits
= *bp
++;
461 case GLX_STENCIL_SIZE
:
462 config
->stencilBits
= *bp
++;
464 case GLX_ACCUM_RED_SIZE
:
465 config
->accumRedBits
= *bp
++;
467 case GLX_ACCUM_GREEN_SIZE
:
468 config
->accumGreenBits
= *bp
++;
470 case GLX_ACCUM_BLUE_SIZE
:
471 config
->accumBlueBits
= *bp
++;
473 case GLX_ACCUM_ALPHA_SIZE
:
474 config
->accumAlphaBits
= *bp
++;
476 case GLX_VISUAL_CAVEAT_EXT
:
477 config
->visualRating
= *bp
++;
479 case GLX_X_VISUAL_TYPE
:
480 config
->visualType
= *bp
++;
482 case GLX_TRANSPARENT_TYPE
:
483 config
->transparentPixel
= *bp
++;
485 case GLX_TRANSPARENT_INDEX_VALUE
:
486 config
->transparentIndex
= *bp
++;
488 case GLX_TRANSPARENT_RED_VALUE
:
489 config
->transparentRed
= *bp
++;
491 case GLX_TRANSPARENT_GREEN_VALUE
:
492 config
->transparentGreen
= *bp
++;
494 case GLX_TRANSPARENT_BLUE_VALUE
:
495 config
->transparentBlue
= *bp
++;
497 case GLX_TRANSPARENT_ALPHA_VALUE
:
498 config
->transparentAlpha
= *bp
++;
501 config
->visualID
= *bp
++;
503 case GLX_DRAWABLE_TYPE
:
504 config
->drawableType
= *bp
++;
505 #ifdef GLX_USE_APPLEGL
506 /* AppleSGLX supports pixmap and pbuffers with all config. */
507 config
->drawableType
|= GLX_WINDOW_BIT
| GLX_PIXMAP_BIT
| GLX_PBUFFER_BIT
;
510 case GLX_RENDER_TYPE
:
511 config
->renderType
= *bp
++;
513 case GLX_X_RENDERABLE
:
514 config
->xRenderable
= *bp
++;
516 case GLX_FBCONFIG_ID
:
517 config
->fbconfigID
= *bp
++;
519 case GLX_MAX_PBUFFER_WIDTH
:
520 config
->maxPbufferWidth
= *bp
++;
522 case GLX_MAX_PBUFFER_HEIGHT
:
523 config
->maxPbufferHeight
= *bp
++;
525 case GLX_MAX_PBUFFER_PIXELS
:
526 config
->maxPbufferPixels
= *bp
++;
528 #ifndef GLX_USE_APPLEGL
529 case GLX_OPTIMAL_PBUFFER_WIDTH_SGIX
:
530 config
->optimalPbufferWidth
= *bp
++;
532 case GLX_OPTIMAL_PBUFFER_HEIGHT_SGIX
:
533 config
->optimalPbufferHeight
= *bp
++;
535 case GLX_VISUAL_SELECT_GROUP_SGIX
:
536 config
->visualSelectGroup
= *bp
++;
538 case GLX_SWAP_METHOD_OML
:
539 config
->swapMethod
= *bp
++;
542 case GLX_SAMPLE_BUFFERS_SGIS
:
543 config
->sampleBuffers
= *bp
++;
545 case GLX_SAMPLES_SGIS
:
546 config
->samples
= *bp
++;
548 #ifdef GLX_USE_APPLEGL
549 case IGNORE_GLX_SWAP_METHOD_OML
:
550 /* We ignore this tag. See the comment above this function. */
554 case GLX_BIND_TO_TEXTURE_RGB_EXT
:
555 config
->bindToTextureRgb
= *bp
++;
557 case GLX_BIND_TO_TEXTURE_RGBA_EXT
:
558 config
->bindToTextureRgba
= *bp
++;
560 case GLX_BIND_TO_MIPMAP_TEXTURE_EXT
:
561 config
->bindToMipmapTexture
= *bp
++;
563 case GLX_BIND_TO_TEXTURE_TARGETS_EXT
:
564 config
->bindToTextureTargets
= *bp
++;
566 case GLX_Y_INVERTED_EXT
:
567 config
->yInverted
= *bp
++;
571 if (fbconfig_style_tags
)
578 if(getenv("LIBGL_DIAGNOSTIC")) {
579 long int tagvalue
= *bp
++;
580 fprintf(stderr
, "WARNING: unknown GLX tag from server: "
581 "tag 0x%lx value 0x%lx\n", tag
, tagvalue
);
583 /* Ignore the unrecognized tag's value */
591 (config
->rgbMode
) ? GLX_RGBA_BIT
: GLX_COLOR_INDEX_BIT
;
594 static struct glx_config
*
595 createConfigsFromProperties(Display
* dpy
, int nvisuals
, int nprops
,
596 int screen
, GLboolean tagged_only
)
598 INT32 buf
[__GLX_TOTAL_CONFIG
], *props
;
600 struct glx_config
*modes
, *m
;
606 /* FIXME: Is the __GLX_MIN_CONFIG_PROPS test correct for FBconfigs? */
608 /* Check number of properties */
609 if (nprops
< __GLX_MIN_CONFIG_PROPS
|| nprops
> __GLX_MAX_CONFIG_PROPS
)
612 /* Allocate memory for our config structure */
613 modes
= glx_config_create_list(nvisuals
);
617 prop_size
= nprops
* __GLX_SIZE_INT32
;
618 if (prop_size
<= sizeof(buf
))
621 props
= Xmalloc(prop_size
);
623 /* Read each config structure and convert it into our format */
625 for (i
= 0; i
< nvisuals
; i
++) {
626 _XRead(dpy
, (char *) props
, prop_size
);
627 #ifdef GLX_USE_APPLEGL
628 /* Older X servers don't send this so we default it here. */
629 m
->drawableType
= GLX_WINDOW_BIT
;
632 * The XQuartz 2.3.2.1 X server doesn't set this properly, so
633 * set the proper bits here.
634 * AppleSGLX supports windows, pixmaps, and pbuffers with all config.
636 m
->drawableType
= GLX_WINDOW_BIT
| GLX_PIXMAP_BIT
| GLX_PBUFFER_BIT
;
638 __glXInitializeVisualConfigFromTags(m
, nprops
, props
,
639 tagged_only
, GL_TRUE
);
651 getVisualConfigs(struct glx_screen
*psc
,
652 struct glx_display
*priv
, int screen
)
654 xGLXGetVisualConfigsReq
*req
;
655 xGLXGetVisualConfigsReply reply
;
656 Display
*dpy
= priv
->dpy
;
661 GetReq(GLXGetVisualConfigs
, req
);
662 req
->reqType
= priv
->majorOpcode
;
663 req
->glxCode
= X_GLXGetVisualConfigs
;
664 req
->screen
= screen
;
666 if (!_XReply(dpy
, (xReply
*) & reply
, 0, False
))
669 psc
->visuals
= createConfigsFromProperties(dpy
,
676 return psc
->visuals
!= NULL
;
680 getFBConfigs(struct glx_screen
*psc
, struct glx_display
*priv
, int screen
)
682 xGLXGetFBConfigsReq
*fb_req
;
683 xGLXGetFBConfigsSGIXReq
*sgi_req
;
684 xGLXVendorPrivateWithReplyReq
*vpreq
;
685 xGLXGetFBConfigsReply reply
;
686 Display
*dpy
= priv
->dpy
;
689 __glXQueryServerString(dpy
, priv
->majorOpcode
, screen
, GLX_EXTENSIONS
);
694 if (atof(priv
->serverGLXversion
) >= 1.3) {
695 GetReq(GLXGetFBConfigs
, fb_req
);
696 fb_req
->reqType
= priv
->majorOpcode
;
697 fb_req
->glxCode
= X_GLXGetFBConfigs
;
698 fb_req
->screen
= screen
;
700 else if (strstr(psc
->serverGLXexts
, "GLX_SGIX_fbconfig") != NULL
) {
701 GetReqExtra(GLXVendorPrivateWithReply
,
702 sz_xGLXGetFBConfigsSGIXReq
+
703 sz_xGLXVendorPrivateWithReplyReq
, vpreq
);
704 sgi_req
= (xGLXGetFBConfigsSGIXReq
*) vpreq
;
705 sgi_req
->reqType
= priv
->majorOpcode
;
706 sgi_req
->glxCode
= X_GLXVendorPrivateWithReply
;
707 sgi_req
->vendorCode
= X_GLXvop_GetFBConfigsSGIX
;
708 sgi_req
->screen
= screen
;
713 if (!_XReply(dpy
, (xReply
*) & reply
, 0, False
))
716 psc
->configs
= createConfigsFromProperties(dpy
,
718 reply
.numAttribs
* 2,
723 return psc
->configs
!= NULL
;
727 glx_screen_init(struct glx_screen
*psc
,
728 int screen
, struct glx_display
* priv
)
730 /* Initialize per screen dynamic client GLX extensions */
731 psc
->ext_list_first_time
= GL_TRUE
;
733 psc
->dpy
= priv
->dpy
;
736 getVisualConfigs(psc
, priv
, screen
);
737 getFBConfigs(psc
, priv
, screen
);
743 ** Allocate the memory for the per screen configs for each screen.
744 ** If that works then fetch the per screen configs data.
747 AllocAndFetchScreenConfigs(Display
* dpy
, struct glx_display
* priv
)
749 struct glx_screen
*psc
;
753 ** First allocate memory for the array of per screen configs.
755 screens
= ScreenCount(dpy
);
756 priv
->screens
= Xmalloc(screens
* sizeof *priv
->screens
);
760 priv
->serverGLXversion
=
761 __glXQueryServerString(dpy
, priv
->majorOpcode
, 0, GLX_VERSION
);
762 if (priv
->serverGLXversion
== NULL
) {
763 FreeScreenConfigs(priv
);
767 for (i
= 0; i
< screens
; i
++, psc
++) {
769 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
770 if (priv
->dri2Display
)
771 psc
= (*priv
->dri2Display
->createScreen
) (i
, priv
);
772 if (psc
== NULL
&& priv
->driDisplay
)
773 psc
= (*priv
->driDisplay
->createScreen
) (i
, priv
);
774 if (psc
== NULL
&& priv
->driswDisplay
)
775 psc
= (*priv
->driswDisplay
->createScreen
) (i
, priv
);
777 #if defined(GLX_USE_APPLEGL)
778 if (psc
== NULL
&& priv
->appleglDisplay
)
779 psc
= (*priv
->appleglDisplay
->createScreen
) (i
, priv
);
782 psc
= indirect_create_screen(i
, priv
);
783 priv
->screens
[i
] = psc
;
790 ** Initialize the client side extension code.
792 _X_HIDDEN
struct glx_display
*
793 __glXInitialize(Display
* dpy
)
795 struct glx_display
*dpyPriv
, *d
;
796 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
797 Bool glx_direct
, glx_accel
;
801 _XLockMutex(_Xglobal_lock
);
803 for (dpyPriv
= glx_displays
; dpyPriv
; dpyPriv
= dpyPriv
->next
) {
804 if (dpyPriv
->dpy
== dpy
) {
805 _XUnlockMutex(_Xglobal_lock
);
810 /* Drop the lock while we create the display private. */
811 _XUnlockMutex(_Xglobal_lock
);
813 dpyPriv
= Xcalloc(1, sizeof *dpyPriv
);
817 dpyPriv
->codes
= XInitExtension(dpy
, __glXExtensionName
);
818 if (!dpyPriv
->codes
) {
820 _XUnlockMutex(_Xglobal_lock
);
825 dpyPriv
->majorOpcode
= dpyPriv
->codes
->major_opcode
;
826 dpyPriv
->serverGLXvendor
= 0x0;
827 dpyPriv
->serverGLXversion
= 0x0;
829 /* See if the versions are compatible */
830 if (!QueryVersion(dpy
, dpyPriv
->majorOpcode
,
831 &dpyPriv
->majorVersion
, &dpyPriv
->minorVersion
)) {
833 _XUnlockMutex(_Xglobal_lock
);
837 for (i
= 0; i
< __GLX_NUMBER_EVENTS
; i
++) {
838 XESetWireToEvent(dpy
, dpyPriv
->codes
->first_event
+ i
, __glXWireToEvent
);
839 XESetEventToWire(dpy
, dpyPriv
->codes
->first_event
+ i
, __glXEventToWire
);
842 XESetCloseDisplay(dpy
, dpyPriv
->codes
->extension
, __glXCloseDisplay
);
843 XESetErrorString (dpy
, dpyPriv
->codes
->extension
,__glXErrorString
);
845 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
846 glx_direct
= (getenv("LIBGL_ALWAYS_INDIRECT") == NULL
);
847 glx_accel
= (getenv("LIBGL_ALWAYS_SOFTWARE") == NULL
);
849 dpyPriv
->drawHash
= __glxHashCreate();
852 ** Initialize the direct rendering per display data and functions.
853 ** Note: This _must_ be done before calling any other DRI routines
854 ** (e.g., those called in AllocAndFetchScreenConfigs).
856 if (glx_direct
&& glx_accel
) {
857 dpyPriv
->dri2Display
= dri2CreateDisplay(dpy
);
858 dpyPriv
->driDisplay
= driCreateDisplay(dpy
);
861 dpyPriv
->driswDisplay
= driswCreateDisplay(dpy
);
864 #ifdef GLX_USE_APPLEGL
865 if (!applegl_create_display(dpyPriv
)) {
870 if (!AllocAndFetchScreenConfigs(dpy
, dpyPriv
)) {
875 if (dpyPriv
->majorVersion
== 1 && dpyPriv
->minorVersion
>= 1)
876 __glXClientInfo(dpy
, dpyPriv
->majorOpcode
);
878 /* Grab the lock again and add the dispay private, unless somebody
879 * beat us to initializing on this display in the meantime. */
880 _XLockMutex(_Xglobal_lock
);
882 for (d
= glx_displays
; d
; d
= d
->next
) {
884 _XUnlockMutex(_Xglobal_lock
);
885 glx_display_free(dpyPriv
);
890 dpyPriv
->next
= glx_displays
;
891 glx_displays
= dpyPriv
;
893 _XUnlockMutex(_Xglobal_lock
);
899 ** Setup for sending a GLX command on dpy. Make sure the extension is
900 ** initialized. Try to avoid calling __glXInitialize as its kinda slow.
903 __glXSetupForCommand(Display
* dpy
)
905 struct glx_context
*gc
;
906 struct glx_display
*priv
;
908 /* If this thread has a current context, flush its rendering commands */
909 gc
= __glXGetCurrentContext();
910 if (gc
->currentDpy
) {
911 /* Flush rendering buffer of the current context, if any */
912 (void) __glXFlushRenderBuffer(gc
, gc
->pc
);
914 if (gc
->currentDpy
== dpy
) {
915 /* Use opcode from gc because its right */
916 return gc
->majorOpcode
;
920 ** Have to get info about argument dpy because it might be to
921 ** a different server
926 /* Forced to lookup extension via the slow initialize route */
927 priv
= __glXInitialize(dpy
);
931 return priv
->majorOpcode
;
935 * Flush the drawing command transport buffer.
937 * \param ctx Context whose transport buffer is to be flushed.
938 * \param pc Pointer to first unused buffer location.
941 * Modify this function to use \c ctx->pc instead of the explicit
945 __glXFlushRenderBuffer(struct glx_context
* ctx
, GLubyte
* pc
)
947 Display
*const dpy
= ctx
->currentDpy
;
949 xcb_connection_t
*c
= XGetXCBConnection(dpy
);
953 const GLint size
= pc
- ctx
->buf
;
955 if ((dpy
!= NULL
) && (size
> 0)) {
957 xcb_glx_render(c
, ctx
->currentContextTag
, size
,
958 (const uint8_t *) ctx
->buf
);
960 /* Send the entire buffer as an X request */
962 GetReq(GLXRender
, req
);
963 req
->reqType
= ctx
->majorOpcode
;
964 req
->glxCode
= X_GLXRender
;
965 req
->contextTag
= ctx
->currentContextTag
;
966 req
->length
+= (size
+ 3) >> 2;
967 _XSend(dpy
, (char *) ctx
->buf
, size
);
973 /* Reset pointer and return it */
980 * Send a portion of a GLXRenderLarge command to the server. The advantage of
981 * this function over \c __glXSendLargeCommand is that callers can use the
982 * data buffer in the GLX context and may be able to avoid allocating an
983 * extra buffer. The disadvantage is the clients will have to do more
984 * GLX protocol work (i.e., calculating \c totalRequests, etc.).
986 * \sa __glXSendLargeCommand
988 * \param gc GLX context
989 * \param requestNumber Which part of the whole command is this? The first
991 * \param totalRequests How many requests will there be?
992 * \param data Command data.
993 * \param dataLen Size, in bytes, of the command data.
996 __glXSendLargeChunk(struct glx_context
* gc
, GLint requestNumber
,
997 GLint totalRequests
, const GLvoid
* data
, GLint dataLen
)
999 Display
*dpy
= gc
->currentDpy
;
1001 xcb_connection_t
*c
= XGetXCBConnection(dpy
);
1002 xcb_glx_render_large(c
, gc
->currentContextTag
, requestNumber
,
1003 totalRequests
, dataLen
, data
);
1005 xGLXRenderLargeReq
*req
;
1007 if (requestNumber
== 1) {
1011 GetReq(GLXRenderLarge
, req
);
1012 req
->reqType
= gc
->majorOpcode
;
1013 req
->glxCode
= X_GLXRenderLarge
;
1014 req
->contextTag
= gc
->currentContextTag
;
1015 req
->length
+= (dataLen
+ 3) >> 2;
1016 req
->requestNumber
= requestNumber
;
1017 req
->requestTotal
= totalRequests
;
1018 req
->dataBytes
= dataLen
;
1019 Data(dpy
, data
, dataLen
);
1021 if (requestNumber
== totalRequests
) {
1025 #endif /* USE_XCB */
1030 * Send a command that is too large for the GLXRender protocol request.
1032 * Send a large command, one that is too large for some reason to
1033 * send using the GLXRender protocol request. One reason to send
1034 * a large command is to avoid copying the data.
1036 * \param ctx GLX context
1037 * \param header Header data.
1038 * \param headerLen Size, in bytes, of the header data. It is assumed that
1039 * the header data will always be small enough to fit in
1040 * a single X protocol packet.
1041 * \param data Command data.
1042 * \param dataLen Size, in bytes, of the command data.
1045 __glXSendLargeCommand(struct glx_context
* ctx
,
1046 const GLvoid
* header
, GLint headerLen
,
1047 const GLvoid
* data
, GLint dataLen
)
1050 GLint totalRequests
, requestNumber
;
1053 ** Calculate the maximum amount of data can be stuffed into a single
1054 ** packet. sz_xGLXRenderReq is added because bufSize is the maximum
1055 ** packet size minus sz_xGLXRenderReq.
1057 maxSize
= (ctx
->bufSize
+ sz_xGLXRenderReq
) - sz_xGLXRenderLargeReq
;
1058 totalRequests
= 1 + (dataLen
/ maxSize
);
1059 if (dataLen
% maxSize
)
1063 ** Send all of the command, except the large array, as one request.
1065 assert(headerLen
<= maxSize
);
1066 __glXSendLargeChunk(ctx
, 1, totalRequests
, header
, headerLen
);
1069 ** Send enough requests until the whole array is sent.
1071 for (requestNumber
= 2; requestNumber
<= (totalRequests
- 1);
1073 __glXSendLargeChunk(ctx
, requestNumber
, totalRequests
, data
, maxSize
);
1074 data
= (const GLvoid
*) (((const GLubyte
*) data
) + maxSize
);
1076 assert(dataLen
> 0);
1079 assert(dataLen
<= maxSize
);
1080 __glXSendLargeChunk(ctx
, requestNumber
, totalRequests
, data
, dataLen
);
1083 /************************************************************************/
1087 __glXDumpDrawBuffer(struct glx_context
* ctx
)
1089 GLubyte
*p
= ctx
->buf
;
1090 GLubyte
*end
= ctx
->pc
;
1091 GLushort opcode
, length
;
1095 opcode
= *((GLushort
*) p
);
1096 length
= *((GLushort
*) (p
+ 2));
1097 printf("%2x: %5d: ", opcode
, length
);
1100 while (length
> 0) {
1101 printf("%08x ", *((unsigned *) p
));