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 #include <X11/extensions/dri2proto.h>
45 #ifdef GLX_USE_APPLEGL
46 #include "apple_glx.h"
47 #include "apple_visual.h"
49 #include "glxextensions.h"
50 #include "glcontextmodes.h"
53 #include <X11/Xlib-xcb.h>
60 void __glXDumpDrawBuffer(__GLXcontext
* ctx
);
64 ** You can set this cell to 1 to force the gl drawing stuff to be
65 ** one command per packet
67 _X_HIDDEN
int __glXDebug
= 0;
69 /* Extension required boiler plate */
71 static char *__glXExtensionName
= GLX_EXTENSION_NAME
;
72 #ifdef GLX_USE_APPLEGL
73 static XExtensionInfo __glXExtensionInfo_data
;
74 XExtensionInfo
*__glXExtensionInfo
= &__glXExtensionInfo_data
;
76 XExtensionInfo
*__glXExtensionInfo
= NULL
;
79 static /* const */ char *error_list
[] = {
85 "GLXBadCurrentWindow",
86 "GLXBadRenderRequest",
88 "GLXUnsupportedPrivateRequest",
91 "GLXBadCurrentDrawable",
96 __glXCloseDisplay(Display
* dpy
, XExtCodes
* codes
)
100 gc
= __glXGetCurrentContext();
101 if (dpy
== gc
->currentDpy
) {
102 __glXSetCurrentContextNull();
103 __glXFreeContext(gc
);
106 return XextRemoveDisplay(__glXExtensionInfo
, dpy
);
110 #ifdef GLX_USE_APPLEGL
111 static char *__glXErrorString(Display
*dpy
, int code
, XExtCodes
*codes
,
116 XEXT_GENERATE_ERROR_STRING(__glXErrorString
, __glXExtensionName
,
117 __GLX_NUMBER_ERRORS
, error_list
)
119 __glXWireToEvent(Display
*dpy
, XEvent
*event
, xEvent
*wire
);
121 __glXEventToWire(Display
*dpy
, XEvent
*event
, xEvent
*wire
);
123 static /* const */ XExtensionHooks __glXExtensionHooks
= {
124 NULL
, /* create_gc */
128 NULL
, /* create_font */
129 NULL
, /* free_font */
130 __glXCloseDisplay
, /* close_display */
131 __glXWireToEvent
, /* wire_to_event */
132 __glXEventToWire
, /* event_to_wire */
134 __glXErrorString
, /* error_string */
137 XEXT_GENERATE_FIND_DISPLAY(__glXFindDisplay
, __glXExtensionInfo
,
138 __glXExtensionName
, &__glXExtensionHooks
,
139 __GLX_NUMBER_EVENTS
, NULL
)
142 * GLX events are a bit funky. We don't stuff the X event code into
143 * our user exposed (via XNextEvent) structure. Instead we use the GLX
144 * private event code namespace (and hope it doesn't conflict). Clients
145 * have to know that bit 15 in the event type field means they're getting
146 * a GLX event, and then handle the various sub-event types there, rather
147 * than simply checking the event code and handling it directly.
151 __glXWireToEvent(Display
*dpy
, XEvent
*event
, xEvent
*wire
)
153 XExtDisplayInfo
*info
= __glXFindDisplay(dpy
);
155 XextCheckExtension(dpy
, info
, __glXExtensionName
, False
);
157 switch ((wire
->u
.u
.type
& 0x7f) - info
->codes
->first_event
) {
158 case GLX_PbufferClobber
:
160 GLXPbufferClobberEvent
*aevent
= (GLXPbufferClobberEvent
*)event
;
161 xGLXPbufferClobberEvent
*awire
= (xGLXPbufferClobberEvent
*)wire
;
162 aevent
->event_type
= awire
->type
;
163 aevent
->serial
= awire
->sequenceNumber
;
164 aevent
->event_type
= awire
->event_type
;
165 aevent
->draw_type
= awire
->draw_type
;
166 aevent
->drawable
= awire
->drawable
;
167 aevent
->buffer_mask
= awire
->buffer_mask
;
168 aevent
->aux_buffer
= awire
->aux_buffer
;
169 aevent
->x
= awire
->x
;
170 aevent
->y
= awire
->y
;
171 aevent
->width
= awire
->width
;
172 aevent
->height
= awire
->height
;
173 aevent
->count
= awire
->count
;
176 /* No easy symbol to test for this, as GLX_BufferSwapComplete is
177 * defined in the local glx.h header, but the
178 * xGLXBufferSwapComplete typedef is only available in new versions
179 * of the external glxproto.h header, which doesn't have any
180 * testable versioning define.
182 * I'll use the related DRI2 define, in the hope that we won't
183 * receive these events unless we know how to ask for them:
185 #ifdef X_DRI2SwapBuffers
186 case GLX_BufferSwapComplete
:
188 GLXBufferSwapComplete
*aevent
= (GLXBufferSwapComplete
*)event
;
189 xGLXBufferSwapComplete
*awire
= (xGLXBufferSwapComplete
*)wire
;
190 aevent
->event_type
= awire
->event_type
;
191 aevent
->drawable
= awire
->drawable
;
192 aevent
->ust
= ((CARD64
)awire
->ust_hi
<< 32) | awire
->ust_lo
;
193 aevent
->msc
= ((CARD64
)awire
->msc_hi
<< 32) | awire
->msc_lo
;
194 aevent
->sbc
= ((CARD64
)awire
->sbc_hi
<< 32) | awire
->sbc_lo
;
199 /* client doesn't support server event */
206 /* We don't actually support this. It doesn't make sense for clients to
207 * send each other GLX events.
210 __glXEventToWire(Display
*dpy
, XEvent
*event
, xEvent
*wire
)
212 XExtDisplayInfo
*info
= __glXFindDisplay(dpy
);
214 XextCheckExtension(dpy
, info
, __glXExtensionName
, False
);
216 switch (event
->type
) {
221 case GLX_EXCHANGE_COMPLETE_INTEL
:
223 case GLX_COPY_COMPLETE_INTEL
:
225 case GLX_FLIP_COMPLETE_INTEL
:
228 /* client doesn't support server event */
235 /************************************************************************/
237 ** Free the per screen configs data as well as the array of
238 ** __glXScreenConfigs.
241 FreeScreenConfigs(__GLXdisplayPrivate
* priv
)
243 __GLXscreenConfigs
*psc
;
246 /* Free screen configuration information */
247 screens
= ScreenCount(priv
->dpy
);
248 for (i
= 0; i
< screens
; i
++) {
249 psc
= priv
->screenConfigs
[i
];
251 _gl_context_modes_destroy(psc
->configs
);
252 if (psc
->effectiveGLXexts
)
253 Xfree(psc
->effectiveGLXexts
);
254 psc
->configs
= NULL
; /* NOTE: just for paranoia */
257 _gl_context_modes_destroy(psc
->visuals
);
258 psc
->visuals
= NULL
; /* NOTE: just for paranoia */
260 Xfree((char *) psc
->serverGLXexts
);
262 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
263 if (psc
->driver_configs
) {
265 for (j
= 0; psc
->driver_configs
[j
]; j
++)
266 free((__DRIconfig
*) psc
->driver_configs
[j
]);
267 free(psc
->driver_configs
);
268 psc
->driver_configs
= NULL
;
270 if (psc
->driScreen
) {
271 psc
->driScreen
->destroyScreen(psc
);
272 psc
->driScreen
= NULL
;
280 XFree((char *) priv
->screenConfigs
);
281 priv
->screenConfigs
= NULL
;
285 ** Release the private memory referred to in a display private
286 ** structure. The caller will free the extension structure.
289 __glXFreeDisplayPrivate(XExtData
* extension
)
291 __GLXdisplayPrivate
*priv
;
293 priv
= (__GLXdisplayPrivate
*) extension
->private_data
;
294 FreeScreenConfigs(priv
);
295 if (priv
->serverGLXvendor
) {
296 Xfree((char *) priv
->serverGLXvendor
);
297 priv
->serverGLXvendor
= 0x0; /* to protect against double free's */
299 if (priv
->serverGLXversion
) {
300 Xfree((char *) priv
->serverGLXversion
);
301 priv
->serverGLXversion
= 0x0; /* to protect against double free's */
304 __glxHashDestroy(priv
->drawHash
);
306 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
307 /* Free the direct rendering per display data */
308 if (priv
->driswDisplay
)
309 (*priv
->driswDisplay
->destroyDisplay
) (priv
->driswDisplay
);
310 priv
->driswDisplay
= NULL
;
312 if (priv
->driDisplay
)
313 (*priv
->driDisplay
->destroyDisplay
) (priv
->driDisplay
);
314 priv
->driDisplay
= NULL
;
316 if (priv
->dri2Display
)
317 (*priv
->dri2Display
->destroyDisplay
) (priv
->dri2Display
);
318 priv
->dri2Display
= NULL
;
321 Xfree((char *) priv
);
325 /************************************************************************/
328 ** Query the version of the GLX extension. This procedure works even if
329 ** the client extension is not completely set up.
332 QueryVersion(Display
* dpy
, int opcode
, int *major
, int *minor
)
335 xcb_connection_t
*c
= XGetXCBConnection(dpy
);
336 xcb_glx_query_version_reply_t
*reply
= xcb_glx_query_version_reply(c
,
337 xcb_glx_query_version
343 if (reply
->major_version
!= GLX_MAJOR_VERSION
) {
347 *major
= reply
->major_version
;
348 *minor
= min(reply
->minor_version
, GLX_MINOR_VERSION
);
352 xGLXQueryVersionReq
*req
;
353 xGLXQueryVersionReply reply
;
355 /* Send the glXQueryVersion request */
357 GetReq(GLXQueryVersion
, req
);
358 req
->reqType
= opcode
;
359 req
->glxCode
= X_GLXQueryVersion
;
360 req
->majorVersion
= GLX_MAJOR_VERSION
;
361 req
->minorVersion
= GLX_MINOR_VERSION
;
362 _XReply(dpy
, (xReply
*) & reply
, 0, False
);
366 if (reply
.majorVersion
!= GLX_MAJOR_VERSION
) {
368 ** The server does not support the same major release as this
373 *major
= reply
.majorVersion
;
374 *minor
= min(reply
.minorVersion
, GLX_MINOR_VERSION
);
380 * We don't want to enable this GLX_OML_swap_method in glxext.h,
381 * because we can't support it. The X server writes it out though,
382 * so we should handle it somehow, to avoid false warnings.
385 IGNORE_GLX_SWAP_METHOD_OML
= 0x8060
390 * getVisualConfigs uses the !tagged_only path.
391 * getFBConfigs uses the tagged_only path.
394 __glXInitializeVisualConfigFromTags(__GLcontextModes
* config
, int count
,
395 const INT32
* bp
, Bool tagged_only
,
396 Bool fbconfig_style_tags
)
401 /* Copy in the first set of properties */
402 config
->visualID
= *bp
++;
404 config
->visualType
= _gl_convert_from_x_visual_type(*bp
++);
406 config
->rgbMode
= *bp
++;
408 config
->redBits
= *bp
++;
409 config
->greenBits
= *bp
++;
410 config
->blueBits
= *bp
++;
411 config
->alphaBits
= *bp
++;
412 config
->accumRedBits
= *bp
++;
413 config
->accumGreenBits
= *bp
++;
414 config
->accumBlueBits
= *bp
++;
415 config
->accumAlphaBits
= *bp
++;
417 config
->doubleBufferMode
= *bp
++;
418 config
->stereoMode
= *bp
++;
420 config
->rgbBits
= *bp
++;
421 config
->depthBits
= *bp
++;
422 config
->stencilBits
= *bp
++;
423 config
->numAuxBuffers
= *bp
++;
424 config
->level
= *bp
++;
426 #ifdef GLX_USE_APPLEGL
427 /* AppleSGLX supports pixmap and pbuffers with all config. */
428 config
->drawableType
= GLX_WINDOW_BIT
| GLX_PIXMAP_BIT
| GLX_PBUFFER_BIT
;
429 /* Unfortunately this can create an ABI compatibility problem. */
432 count
-= __GLX_MIN_CONFIG_PROPS
;
437 ** Additional properties may be in a list at the end
438 ** of the reply. They are in pairs of property type
439 ** and property value.
442 #define FETCH_OR_SET(tag) \
443 config-> tag = ( fbconfig_style_tags ) ? *bp++ : 1
445 for (i
= 0; i
< count
; i
+= 2) {
446 long int tag
= *bp
++;
450 FETCH_OR_SET(rgbMode
);
452 case GLX_BUFFER_SIZE
:
453 config
->rgbBits
= *bp
++;
456 config
->level
= *bp
++;
458 case GLX_DOUBLEBUFFER
:
459 FETCH_OR_SET(doubleBufferMode
);
462 FETCH_OR_SET(stereoMode
);
464 case GLX_AUX_BUFFERS
:
465 config
->numAuxBuffers
= *bp
++;
468 config
->redBits
= *bp
++;
471 config
->greenBits
= *bp
++;
474 config
->blueBits
= *bp
++;
477 config
->alphaBits
= *bp
++;
480 config
->depthBits
= *bp
++;
482 case GLX_STENCIL_SIZE
:
483 config
->stencilBits
= *bp
++;
485 case GLX_ACCUM_RED_SIZE
:
486 config
->accumRedBits
= *bp
++;
488 case GLX_ACCUM_GREEN_SIZE
:
489 config
->accumGreenBits
= *bp
++;
491 case GLX_ACCUM_BLUE_SIZE
:
492 config
->accumBlueBits
= *bp
++;
494 case GLX_ACCUM_ALPHA_SIZE
:
495 config
->accumAlphaBits
= *bp
++;
497 case GLX_VISUAL_CAVEAT_EXT
:
498 config
->visualRating
= *bp
++;
500 case GLX_X_VISUAL_TYPE
:
501 config
->visualType
= *bp
++;
503 case GLX_TRANSPARENT_TYPE
:
504 config
->transparentPixel
= *bp
++;
506 case GLX_TRANSPARENT_INDEX_VALUE
:
507 config
->transparentIndex
= *bp
++;
509 case GLX_TRANSPARENT_RED_VALUE
:
510 config
->transparentRed
= *bp
++;
512 case GLX_TRANSPARENT_GREEN_VALUE
:
513 config
->transparentGreen
= *bp
++;
515 case GLX_TRANSPARENT_BLUE_VALUE
:
516 config
->transparentBlue
= *bp
++;
518 case GLX_TRANSPARENT_ALPHA_VALUE
:
519 config
->transparentAlpha
= *bp
++;
522 config
->visualID
= *bp
++;
524 case GLX_DRAWABLE_TYPE
:
525 config
->drawableType
= *bp
++;
526 #ifdef GLX_USE_APPLEGL
527 /* AppleSGLX supports pixmap and pbuffers with all config. */
528 config
->drawableType
|= GLX_WINDOW_BIT
| GLX_PIXMAP_BIT
| GLX_PBUFFER_BIT
;
531 case GLX_RENDER_TYPE
:
532 config
->renderType
= *bp
++;
534 case GLX_X_RENDERABLE
:
535 config
->xRenderable
= *bp
++;
537 case GLX_FBCONFIG_ID
:
538 config
->fbconfigID
= *bp
++;
540 case GLX_MAX_PBUFFER_WIDTH
:
541 config
->maxPbufferWidth
= *bp
++;
543 case GLX_MAX_PBUFFER_HEIGHT
:
544 config
->maxPbufferHeight
= *bp
++;
546 case GLX_MAX_PBUFFER_PIXELS
:
547 config
->maxPbufferPixels
= *bp
++;
549 #ifndef GLX_USE_APPLEGL
550 case GLX_OPTIMAL_PBUFFER_WIDTH_SGIX
:
551 config
->optimalPbufferWidth
= *bp
++;
553 case GLX_OPTIMAL_PBUFFER_HEIGHT_SGIX
:
554 config
->optimalPbufferHeight
= *bp
++;
556 case GLX_VISUAL_SELECT_GROUP_SGIX
:
557 config
->visualSelectGroup
= *bp
++;
559 case GLX_SWAP_METHOD_OML
:
560 config
->swapMethod
= *bp
++;
563 case GLX_SAMPLE_BUFFERS_SGIS
:
564 config
->sampleBuffers
= *bp
++;
566 case GLX_SAMPLES_SGIS
:
567 config
->samples
= *bp
++;
569 #ifdef GLX_USE_APPLEGL
570 case IGNORE_GLX_SWAP_METHOD_OML
:
571 /* We ignore this tag. See the comment above this function. */
575 case GLX_BIND_TO_TEXTURE_RGB_EXT
:
576 config
->bindToTextureRgb
= *bp
++;
578 case GLX_BIND_TO_TEXTURE_RGBA_EXT
:
579 config
->bindToTextureRgba
= *bp
++;
581 case GLX_BIND_TO_MIPMAP_TEXTURE_EXT
:
582 config
->bindToMipmapTexture
= *bp
++;
584 case GLX_BIND_TO_TEXTURE_TARGETS_EXT
:
585 config
->bindToTextureTargets
= *bp
++;
587 case GLX_Y_INVERTED_EXT
:
588 config
->yInverted
= *bp
++;
592 if (fbconfig_style_tags
)
599 if(getenv("LIBGL_DIAGNOSTIC")) {
600 long int tagvalue
= *bp
++;
601 fprintf(stderr
, "WARNING: unknown GLX tag from server: "
602 "tag 0x%lx value 0x%lx\n", tag
, tagvalue
);
604 /* Ignore the unrecognized tag's value */
612 (config
->rgbMode
) ? GLX_RGBA_BIT
: GLX_COLOR_INDEX_BIT
;
614 config
->haveAccumBuffer
= ((config
->accumRedBits
+
615 config
->accumGreenBits
+
616 config
->accumBlueBits
+
617 config
->accumAlphaBits
) > 0);
618 config
->haveDepthBuffer
= (config
->depthBits
> 0);
619 config
->haveStencilBuffer
= (config
->stencilBits
> 0);
622 static __GLcontextModes
*
623 createConfigsFromProperties(Display
* dpy
, int nvisuals
, int nprops
,
624 int screen
, GLboolean tagged_only
)
626 INT32 buf
[__GLX_TOTAL_CONFIG
], *props
;
628 __GLcontextModes
*modes
, *m
;
634 /* FIXME: Is the __GLX_MIN_CONFIG_PROPS test correct for FBconfigs? */
636 /* Check number of properties */
637 if (nprops
< __GLX_MIN_CONFIG_PROPS
|| nprops
> __GLX_MAX_CONFIG_PROPS
)
640 /* Allocate memory for our config structure */
641 modes
= _gl_context_modes_create(nvisuals
, sizeof(__GLcontextModes
));
645 prop_size
= nprops
* __GLX_SIZE_INT32
;
646 if (prop_size
<= sizeof(buf
))
649 props
= Xmalloc(prop_size
);
651 /* Read each config structure and convert it into our format */
653 for (i
= 0; i
< nvisuals
; i
++) {
654 _XRead(dpy
, (char *) props
, prop_size
);
655 #ifdef GLX_USE_APPLEGL
656 /* Older X servers don't send this so we default it here. */
657 m
->drawableType
= GLX_WINDOW_BIT
;
660 * The XQuartz 2.3.2.1 X server doesn't set this properly, so
661 * set the proper bits here.
662 * AppleSGLX supports windows, pixmaps, and pbuffers with all config.
664 m
->drawableType
= GLX_WINDOW_BIT
| GLX_PIXMAP_BIT
| GLX_PBUFFER_BIT
;
666 __glXInitializeVisualConfigFromTags(m
, nprops
, props
,
667 tagged_only
, GL_TRUE
);
679 getVisualConfigs(__GLXscreenConfigs
*psc
,
680 __GLXdisplayPrivate
*priv
, int screen
)
682 xGLXGetVisualConfigsReq
*req
;
683 xGLXGetVisualConfigsReply reply
;
684 Display
*dpy
= priv
->dpy
;
689 GetReq(GLXGetVisualConfigs
, req
);
690 req
->reqType
= priv
->majorOpcode
;
691 req
->glxCode
= X_GLXGetVisualConfigs
;
692 req
->screen
= screen
;
694 if (!_XReply(dpy
, (xReply
*) & reply
, 0, False
))
697 psc
->visuals
= createConfigsFromProperties(dpy
,
704 return psc
->visuals
!= NULL
;
708 getFBConfigs(__GLXscreenConfigs
*psc
, __GLXdisplayPrivate
*priv
, int screen
)
710 xGLXGetFBConfigsReq
*fb_req
;
711 xGLXGetFBConfigsSGIXReq
*sgi_req
;
712 xGLXVendorPrivateWithReplyReq
*vpreq
;
713 xGLXGetFBConfigsReply reply
;
714 Display
*dpy
= priv
->dpy
;
717 __glXQueryServerString(dpy
, priv
->majorOpcode
, screen
, GLX_EXTENSIONS
);
722 if (atof(priv
->serverGLXversion
) >= 1.3) {
723 GetReq(GLXGetFBConfigs
, fb_req
);
724 fb_req
->reqType
= priv
->majorOpcode
;
725 fb_req
->glxCode
= X_GLXGetFBConfigs
;
726 fb_req
->screen
= screen
;
728 else if (strstr(psc
->serverGLXexts
, "GLX_SGIX_fbconfig") != NULL
) {
729 GetReqExtra(GLXVendorPrivateWithReply
,
730 sz_xGLXGetFBConfigsSGIXReq
+
731 sz_xGLXVendorPrivateWithReplyReq
, vpreq
);
732 sgi_req
= (xGLXGetFBConfigsSGIXReq
*) vpreq
;
733 sgi_req
->reqType
= priv
->majorOpcode
;
734 sgi_req
->glxCode
= X_GLXVendorPrivateWithReply
;
735 sgi_req
->vendorCode
= X_GLXvop_GetFBConfigsSGIX
;
736 sgi_req
->screen
= screen
;
741 if (!_XReply(dpy
, (xReply
*) & reply
, 0, False
))
744 psc
->configs
= createConfigsFromProperties(dpy
,
746 reply
.numAttribs
* 2,
751 return psc
->configs
!= NULL
;
755 glx_screen_init(__GLXscreenConfigs
*psc
,
756 int screen
, __GLXdisplayPrivate
* priv
)
758 /* Initialize per screen dynamic client GLX extensions */
759 psc
->ext_list_first_time
= GL_TRUE
;
761 psc
->dpy
= priv
->dpy
;
764 getVisualConfigs(psc
, priv
, screen
);
765 getFBConfigs(psc
, priv
, screen
);
770 static __GLXscreenConfigs
*
771 createIndirectScreen()
773 __GLXscreenConfigs
*psc
;
775 psc
= Xmalloc(sizeof *psc
);
776 memset(psc
, 0, sizeof *psc
);
782 ** Allocate the memory for the per screen configs for each screen.
783 ** If that works then fetch the per screen configs data.
786 AllocAndFetchScreenConfigs(Display
* dpy
, __GLXdisplayPrivate
* priv
)
788 __GLXscreenConfigs
*psc
;
792 ** First allocate memory for the array of per screen configs.
794 screens
= ScreenCount(dpy
);
795 priv
->screenConfigs
= Xmalloc(screens
* sizeof *priv
->screenConfigs
);
796 if (!priv
->screenConfigs
)
799 priv
->serverGLXversion
=
800 __glXQueryServerString(dpy
, priv
->majorOpcode
, 0, GLX_VERSION
);
801 if (priv
->serverGLXversion
== NULL
) {
802 FreeScreenConfigs(priv
);
806 for (i
= 0; i
< screens
; i
++, psc
++) {
807 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
808 if (priv
->dri2Display
)
809 psc
= (*priv
->dri2Display
->createScreen
) (i
, priv
);
810 if (psc
== NULL
&& priv
->driDisplay
)
811 psc
= (*priv
->driDisplay
->createScreen
) (i
, priv
);
812 if (psc
== NULL
&& priv
->driswDisplay
)
813 psc
= (*priv
->driswDisplay
->createScreen
) (i
, priv
);
815 psc
= createIndirectScreen (i
, priv
);
817 priv
->screenConfigs
[i
] = psc
;
824 ** Initialize the client side extension code.
826 _X_HIDDEN __GLXdisplayPrivate
*
827 __glXInitialize(Display
* dpy
)
829 XExtDisplayInfo
*info
= __glXFindDisplay(dpy
);
830 XExtData
**privList
, *private, *found
;
831 __GLXdisplayPrivate
*dpyPriv
;
832 XEDataObject dataObj
;
834 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
835 Bool glx_direct
, glx_accel
;
838 /* The one and only long long lock */
841 if (!XextHasExtension(info
)) {
842 /* No GLX extension supported by this server. Oh well. */
844 XMissingExtension(dpy
, __glXExtensionName
);
848 /* See if a display private already exists. If so, return it */
849 dataObj
.display
= dpy
;
850 privList
= XEHeadOfExtensionList(dataObj
);
851 found
= XFindOnExtensionList(privList
, info
->codes
->extension
);
854 return (__GLXdisplayPrivate
*) found
->private_data
;
857 /* See if the versions are compatible */
858 if (!QueryVersion(dpy
, info
->codes
->major_opcode
, &major
, &minor
)) {
859 /* The client and server do not agree on versions. Punt. */
865 ** Allocate memory for all the pieces needed for this buffer.
867 private = (XExtData
*) Xmalloc(sizeof(XExtData
));
872 dpyPriv
= (__GLXdisplayPrivate
*) Xcalloc(1, sizeof(__GLXdisplayPrivate
));
875 Xfree((char *) private);
880 ** Init the display private and then read in the screen config
881 ** structures from the server.
883 dpyPriv
->majorOpcode
= info
->codes
->major_opcode
;
884 dpyPriv
->majorVersion
= major
;
885 dpyPriv
->minorVersion
= minor
;
888 dpyPriv
->serverGLXvendor
= 0x0;
889 dpyPriv
->serverGLXversion
= 0x0;
891 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
892 glx_direct
= (getenv("LIBGL_ALWAYS_INDIRECT") == NULL
);
893 glx_accel
= (getenv("LIBGL_ALWAYS_SOFTWARE") == NULL
);
895 dpyPriv
->drawHash
= __glxHashCreate();
898 ** Initialize the direct rendering per display data and functions.
899 ** Note: This _must_ be done before calling any other DRI routines
900 ** (e.g., those called in AllocAndFetchScreenConfigs).
902 if (glx_direct
&& glx_accel
) {
903 dpyPriv
->dri2Display
= dri2CreateDisplay(dpy
);
904 dpyPriv
->driDisplay
= driCreateDisplay(dpy
);
907 dpyPriv
->driswDisplay
= driswCreateDisplay(dpy
);
909 #ifdef GLX_USE_APPLEGL
910 if (apple_init_glx(dpy
) || !AllocAndFetchScreenConfigs(dpy
, dpyPriv
)) {
912 if (!AllocAndFetchScreenConfigs(dpy
, dpyPriv
)) {
915 Xfree((char *) dpyPriv
);
916 Xfree((char *) private);
921 ** Fill in the private structure. This is the actual structure that
922 ** hangs off of the Display structure. Our private structure is
923 ** referred to by this structure. Got that?
925 private->number
= info
->codes
->extension
;
927 private->free_private
= __glXFreeDisplayPrivate
;
928 private->private_data
= (char *) dpyPriv
;
929 XAddToExtensionList(privList
, private);
931 if (dpyPriv
->majorVersion
== 1 && dpyPriv
->minorVersion
>= 1) {
932 __glXClientInfo(dpy
, dpyPriv
->majorOpcode
);
940 ** Setup for sending a GLX command on dpy. Make sure the extension is
941 ** initialized. Try to avoid calling __glXInitialize as its kinda slow.
944 __glXSetupForCommand(Display
* dpy
)
947 __GLXdisplayPrivate
*priv
;
949 /* If this thread has a current context, flush its rendering commands */
950 gc
= __glXGetCurrentContext();
951 if (gc
->currentDpy
) {
952 /* Flush rendering buffer of the current context, if any */
953 (void) __glXFlushRenderBuffer(gc
, gc
->pc
);
955 if (gc
->currentDpy
== dpy
) {
956 /* Use opcode from gc because its right */
957 return gc
->majorOpcode
;
961 ** Have to get info about argument dpy because it might be to
962 ** a different server
967 /* Forced to lookup extension via the slow initialize route */
968 priv
= __glXInitialize(dpy
);
972 return priv
->majorOpcode
;
976 * Flush the drawing command transport buffer.
978 * \param ctx Context whose transport buffer is to be flushed.
979 * \param pc Pointer to first unused buffer location.
982 * Modify this function to use \c ctx->pc instead of the explicit
986 __glXFlushRenderBuffer(__GLXcontext
* ctx
, GLubyte
* pc
)
988 Display
*const dpy
= ctx
->currentDpy
;
990 xcb_connection_t
*c
= XGetXCBConnection(dpy
);
994 const GLint size
= pc
- ctx
->buf
;
996 if ((dpy
!= NULL
) && (size
> 0)) {
998 xcb_glx_render(c
, ctx
->currentContextTag
, size
,
999 (const uint8_t *) ctx
->buf
);
1001 /* Send the entire buffer as an X request */
1003 GetReq(GLXRender
, req
);
1004 req
->reqType
= ctx
->majorOpcode
;
1005 req
->glxCode
= X_GLXRender
;
1006 req
->contextTag
= ctx
->currentContextTag
;
1007 req
->length
+= (size
+ 3) >> 2;
1008 _XSend(dpy
, (char *) ctx
->buf
, size
);
1014 /* Reset pointer and return it */
1021 * Send a portion of a GLXRenderLarge command to the server. The advantage of
1022 * this function over \c __glXSendLargeCommand is that callers can use the
1023 * data buffer in the GLX context and may be able to avoid allocating an
1024 * extra buffer. The disadvantage is the clients will have to do more
1025 * GLX protocol work (i.e., calculating \c totalRequests, etc.).
1027 * \sa __glXSendLargeCommand
1029 * \param gc GLX context
1030 * \param requestNumber Which part of the whole command is this? The first
1032 * \param totalRequests How many requests will there be?
1033 * \param data Command data.
1034 * \param dataLen Size, in bytes, of the command data.
1037 __glXSendLargeChunk(__GLXcontext
* gc
, GLint requestNumber
,
1038 GLint totalRequests
, const GLvoid
* data
, GLint dataLen
)
1040 Display
*dpy
= gc
->currentDpy
;
1042 xcb_connection_t
*c
= XGetXCBConnection(dpy
);
1043 xcb_glx_render_large(c
, gc
->currentContextTag
, requestNumber
,
1044 totalRequests
, dataLen
, data
);
1046 xGLXRenderLargeReq
*req
;
1048 if (requestNumber
== 1) {
1052 GetReq(GLXRenderLarge
, req
);
1053 req
->reqType
= gc
->majorOpcode
;
1054 req
->glxCode
= X_GLXRenderLarge
;
1055 req
->contextTag
= gc
->currentContextTag
;
1056 req
->length
+= (dataLen
+ 3) >> 2;
1057 req
->requestNumber
= requestNumber
;
1058 req
->requestTotal
= totalRequests
;
1059 req
->dataBytes
= dataLen
;
1060 Data(dpy
, data
, dataLen
);
1062 if (requestNumber
== totalRequests
) {
1066 #endif /* USE_XCB */
1071 * Send a command that is too large for the GLXRender protocol request.
1073 * Send a large command, one that is too large for some reason to
1074 * send using the GLXRender protocol request. One reason to send
1075 * a large command is to avoid copying the data.
1077 * \param ctx GLX context
1078 * \param header Header data.
1079 * \param headerLen Size, in bytes, of the header data. It is assumed that
1080 * the header data will always be small enough to fit in
1081 * a single X protocol packet.
1082 * \param data Command data.
1083 * \param dataLen Size, in bytes, of the command data.
1086 __glXSendLargeCommand(__GLXcontext
* ctx
,
1087 const GLvoid
* header
, GLint headerLen
,
1088 const GLvoid
* data
, GLint dataLen
)
1091 GLint totalRequests
, requestNumber
;
1094 ** Calculate the maximum amount of data can be stuffed into a single
1095 ** packet. sz_xGLXRenderReq is added because bufSize is the maximum
1096 ** packet size minus sz_xGLXRenderReq.
1098 maxSize
= (ctx
->bufSize
+ sz_xGLXRenderReq
) - sz_xGLXRenderLargeReq
;
1099 totalRequests
= 1 + (dataLen
/ maxSize
);
1100 if (dataLen
% maxSize
)
1104 ** Send all of the command, except the large array, as one request.
1106 assert(headerLen
<= maxSize
);
1107 __glXSendLargeChunk(ctx
, 1, totalRequests
, header
, headerLen
);
1110 ** Send enough requests until the whole array is sent.
1112 for (requestNumber
= 2; requestNumber
<= (totalRequests
- 1);
1114 __glXSendLargeChunk(ctx
, requestNumber
, totalRequests
, data
, maxSize
);
1115 data
= (const GLvoid
*) (((const GLubyte
*) data
) + maxSize
);
1117 assert(dataLen
> 0);
1120 assert(dataLen
<= maxSize
);
1121 __glXSendLargeChunk(ctx
, requestNumber
, totalRequests
, data
, dataLen
);
1124 /************************************************************************/
1128 __glXDumpDrawBuffer(__GLXcontext
* ctx
)
1130 GLubyte
*p
= ctx
->buf
;
1131 GLubyte
*end
= ctx
->pc
;
1132 GLushort opcode
, length
;
1136 opcode
= *((GLushort
*) p
);
1137 length
= *((GLushort
*) (p
+ 2));
1138 printf("%2x: %5d: ", opcode
, length
);
1141 while (length
> 0) {
1142 printf("%08x ", *((unsigned *) p
));