1 /*
2 * SGI FREE SOFTWARE LICENSE B (Version 2.0, Sept. 18, 2008)
3 * Copyright (C) 1991-2000 Silicon Graphics, Inc. All Rights Reserved.
4 *
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:
11 *
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.
16 *
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
23 * SOFTWARE.
24 *
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.
29 */
30
31 /**
32 * \file glxcmds.c
33 * Client-side GLX interface.
34 */
35
36 #include "glxclient.h"
37 #include "glapi.h"
38 #include "glxextensions.h"
39 #include "indirect.h"
40 #include "glx_error.h"
41
42 #ifdef GLX_DIRECT_RENDERING
43 #ifdef GLX_USE_APPLEGL
44 #include "apple/apple_glx_context.h"
45 #include "apple/apple_glx.h"
46 #include "util/debug.h"
47 #else
48 #ifndef GLX_USE_WINDOWSGL
49 #include <X11/extensions/xf86vmode.h>
50 #endif /* GLX_USE_WINDOWSGL */
51 #endif
52 #endif
53 #include <limits.h>
54 #include <X11/Xlib-xcb.h>
55 #include <xcb/xcb.h>
56 #include <xcb/glx.h>
57 #include "GL/mesa_glinterop.h"
58
59 static const char __glXGLXClientVendorName[] = "Mesa Project and SGI";
60 static const char __glXGLXClientVersion[] = "1.4";
61
62 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
63
64 /**
65 * Get the __DRIdrawable for the drawable associated with a GLXContext
66 *
67 * \param dpy The display associated with \c drawable.
68 * \param drawable GLXDrawable whose __DRIdrawable part is to be retrieved.
69 * \param scrn_num If non-NULL, the drawables screen is stored there
70 * \returns A pointer to the context's __DRIdrawable on success, or NULL if
71 * the drawable is not associated with a direct-rendering context.
72 */
73 _X_HIDDEN __GLXDRIdrawable *
GetGLXDRIDrawable(Display * dpy,GLXDrawable drawable)74 GetGLXDRIDrawable(Display * dpy, GLXDrawable drawable)
75 {
76 struct glx_display *priv = __glXInitialize(dpy);
77 __GLXDRIdrawable *pdraw;
78
79 if (priv == NULL)
80 return NULL;
81
82 if (__glxHashLookup(priv->drawHash, drawable, (void *) &pdraw) == 0)
83 return pdraw;
84
85 return NULL;
86 }
87
88 #endif
89
90 _X_HIDDEN struct glx_drawable *
GetGLXDrawable(Display * dpy,GLXDrawable drawable)91 GetGLXDrawable(Display *dpy, GLXDrawable drawable)
92 {
93 struct glx_display *priv = __glXInitialize(dpy);
94 struct glx_drawable *glxDraw;
95
96 if (priv == NULL)
97 return NULL;
98
99 if (__glxHashLookup(priv->glXDrawHash, drawable, (void *) &glxDraw) == 0)
100 return glxDraw;
101
102 return NULL;
103 }
104
105 _X_HIDDEN int
InitGLXDrawable(Display * dpy,struct glx_drawable * glxDraw,XID xDrawable,GLXDrawable drawable)106 InitGLXDrawable(Display *dpy, struct glx_drawable *glxDraw, XID xDrawable,
107 GLXDrawable drawable)
108 {
109 struct glx_display *priv = __glXInitialize(dpy);
110
111 if (!priv)
112 return -1;
113
114 glxDraw->xDrawable = xDrawable;
115 glxDraw->drawable = drawable;
116 glxDraw->lastEventSbc = 0;
117 glxDraw->eventSbcWrap = 0;
118
119 return __glxHashInsert(priv->glXDrawHash, drawable, glxDraw);
120 }
121
122 _X_HIDDEN void
DestroyGLXDrawable(Display * dpy,GLXDrawable drawable)123 DestroyGLXDrawable(Display *dpy, GLXDrawable drawable)
124 {
125 struct glx_display *priv = __glXInitialize(dpy);
126 struct glx_drawable *glxDraw;
127
128 if (!priv)
129 return;
130
131 glxDraw = GetGLXDrawable(dpy, drawable);
132 __glxHashDelete(priv->glXDrawHash, drawable);
133 free(glxDraw);
134 }
135
136 /**
137 * Get the GLX per-screen data structure associated with a GLX context.
138 *
139 * \param dpy Display for which the GLX per-screen information is to be
140 * retrieved.
141 * \param scrn Screen on \c dpy for which the GLX per-screen information is
142 * to be retrieved.
143 * \returns A pointer to the GLX per-screen data if \c dpy and \c scrn
144 * specify a valid GLX screen, or NULL otherwise.
145 *
146 * \todo Should this function validate that \c scrn is within the screen
147 * number range for \c dpy?
148 */
149
150 _X_HIDDEN struct glx_screen *
GetGLXScreenConfigs(Display * dpy,int scrn)151 GetGLXScreenConfigs(Display * dpy, int scrn)
152 {
153 struct glx_display *const priv = __glXInitialize(dpy);
154
155 return (priv
156 && priv->screens !=
157 NULL) ? priv->screens[scrn] : NULL;
158 }
159
160
161 static int
GetGLXPrivScreenConfig(Display * dpy,int scrn,struct glx_display ** ppriv,struct glx_screen ** ppsc)162 GetGLXPrivScreenConfig(Display * dpy, int scrn, struct glx_display ** ppriv,
163 struct glx_screen ** ppsc)
164 {
165 /* Initialize the extension, if needed . This has the added value
166 * of initializing/allocating the display private
167 */
168
169 if (dpy == NULL) {
170 return GLX_NO_EXTENSION;
171 }
172
173 *ppriv = __glXInitialize(dpy);
174 if (*ppriv == NULL) {
175 return GLX_NO_EXTENSION;
176 }
177
178 /* Check screen number to see if its valid */
179 if ((scrn < 0) || (scrn >= ScreenCount(dpy))) {
180 return GLX_BAD_SCREEN;
181 }
182
183 /* Check to see if the GL is supported on this screen */
184 *ppsc = (*ppriv)->screens[scrn];
185 if ((*ppsc)->configs == NULL && (*ppsc)->visuals == NULL) {
186 /* No support for GL on this screen regardless of visual */
187 return GLX_BAD_VISUAL;
188 }
189
190 return Success;
191 }
192
193
194 /**
195 * Determine if a \c GLXFBConfig supplied by the application is valid.
196 *
197 * \param dpy Application supplied \c Display pointer.
198 * \param config Application supplied \c GLXFBConfig.
199 *
200 * \returns If the \c GLXFBConfig is valid, the a pointer to the matching
201 * \c struct glx_config structure is returned. Otherwise, \c NULL
202 * is returned.
203 */
204 static struct glx_config *
ValidateGLXFBConfig(Display * dpy,GLXFBConfig fbconfig)205 ValidateGLXFBConfig(Display * dpy, GLXFBConfig fbconfig)
206 {
207 struct glx_display *const priv = __glXInitialize(dpy);
208 int num_screens = ScreenCount(dpy);
209 unsigned i;
210 struct glx_config *config;
211
212 if (priv != NULL) {
213 for (i = 0; i < num_screens; i++) {
214 for (config = priv->screens[i]->configs; config != NULL;
215 config = config->next) {
216 if (config == (struct glx_config *) fbconfig) {
217 return config;
218 }
219 }
220 }
221 }
222
223 return NULL;
224 }
225
226 /**
227 * Verifies context's GLX_RENDER_TYPE value with config.
228 *
229 * \param config GLX FBConfig which will support the returned renderType.
230 * \param renderType The context render type to be verified.
231 * \return True if the value of context renderType was approved, or 0 if no
232 * valid value was found.
233 */
234 Bool
validate_renderType_against_config(const struct glx_config * config,int renderType)235 validate_renderType_against_config(const struct glx_config *config,
236 int renderType)
237 {
238 /* GLX_EXT_no_config_context supports any render type */
239 if (!config)
240 return True;
241
242 switch (renderType) {
243 case GLX_RGBA_TYPE:
244 return (config->renderType & GLX_RGBA_BIT) != 0;
245 case GLX_COLOR_INDEX_TYPE:
246 return (config->renderType & GLX_COLOR_INDEX_BIT) != 0;
247 case GLX_RGBA_FLOAT_TYPE_ARB:
248 return (config->renderType & GLX_RGBA_FLOAT_BIT_ARB) != 0;
249 case GLX_RGBA_UNSIGNED_FLOAT_TYPE_EXT:
250 return (config->renderType & GLX_RGBA_UNSIGNED_FLOAT_BIT_EXT) != 0;
251 default:
252 break;
253 }
254 return 0;
255 }
256
257 _X_HIDDEN Bool
glx_context_init(struct glx_context * gc,struct glx_screen * psc,struct glx_config * config)258 glx_context_init(struct glx_context *gc,
259 struct glx_screen *psc, struct glx_config *config)
260 {
261 gc->majorOpcode = __glXSetupForCommand(psc->display->dpy);
262 if (!gc->majorOpcode)
263 return False;
264
265 gc->screen = psc->scr;
266 gc->psc = psc;
267 gc->config = config;
268 gc->isDirect = GL_TRUE;
269 gc->currentContextTag = -1;
270
271 return True;
272 }
273
274 /**
275 * Determine if a context uses direct rendering.
276 *
277 * \param dpy Display where the context was created.
278 * \param contextID ID of the context to be tested.
279 * \param error Out parameter, set to True on error if not NULL
280 *
281 * \returns \c True if the context is direct rendering or not.
282 */
283 static Bool
__glXIsDirect(Display * dpy,GLXContextID contextID,Bool * error)284 __glXIsDirect(Display * dpy, GLXContextID contextID, Bool *error)
285 {
286 CARD8 opcode;
287 xcb_connection_t *c;
288 xcb_generic_error_t *err;
289 xcb_glx_is_direct_reply_t *reply;
290 Bool is_direct;
291
292 opcode = __glXSetupForCommand(dpy);
293 if (!opcode) {
294 return False;
295 }
296
297 c = XGetXCBConnection(dpy);
298 reply = xcb_glx_is_direct_reply(c, xcb_glx_is_direct(c, contextID), &err);
299 is_direct = (reply != NULL && reply->is_direct) ? True : False;
300
301 if (err != NULL) {
302 if (error)
303 *error = True;
304 __glXSendErrorForXcb(dpy, err);
305 free(err);
306 }
307
308 free(reply);
309
310 return is_direct;
311 }
312
313 /**
314 * Create a new context.
315 *
316 * \param renderType For FBConfigs, what is the rendering type?
317 */
318
319 static GLXContext
CreateContext(Display * dpy,int generic_id,struct glx_config * config,GLXContext shareList_user,Bool allowDirect,unsigned code,int renderType,int screen)320 CreateContext(Display *dpy, int generic_id, struct glx_config *config,
321 GLXContext shareList_user, Bool allowDirect,
322 unsigned code, int renderType, int screen)
323 {
324 struct glx_context *gc;
325 struct glx_screen *psc;
326 struct glx_context *shareList = (struct glx_context *) shareList_user;
327 if (dpy == NULL)
328 return NULL;
329
330 psc = GetGLXScreenConfigs(dpy, screen);
331 if (psc == NULL)
332 return NULL;
333
334 if (generic_id == None)
335 return NULL;
336
337 gc = NULL;
338 #ifdef GLX_USE_APPLEGL
339 gc = applegl_create_context(psc, config, shareList, renderType);
340 #else
341 if (allowDirect && psc->vtable->create_context)
342 gc = psc->vtable->create_context(psc, config, shareList, renderType);
343 if (!gc)
344 gc = indirect_create_context(psc, config, shareList, renderType);
345 #endif
346 if (!gc)
347 return NULL;
348
349 LockDisplay(dpy);
350 switch (code) {
351 case X_GLXCreateContext: {
352 xGLXCreateContextReq *req;
353
354 /* Send the glXCreateContext request */
355 GetReq(GLXCreateContext, req);
356 req->reqType = gc->majorOpcode;
357 req->glxCode = X_GLXCreateContext;
358 req->context = gc->xid = XAllocID(dpy);
359 req->visual = generic_id;
360 req->screen = screen;
361 req->shareList = shareList ? shareList->xid : None;
362 req->isDirect = gc->isDirect;
363 break;
364 }
365
366 case X_GLXCreateNewContext: {
367 xGLXCreateNewContextReq *req;
368
369 /* Send the glXCreateNewContext request */
370 GetReq(GLXCreateNewContext, req);
371 req->reqType = gc->majorOpcode;
372 req->glxCode = X_GLXCreateNewContext;
373 req->context = gc->xid = XAllocID(dpy);
374 req->fbconfig = generic_id;
375 req->screen = screen;
376 req->renderType = renderType;
377 req->shareList = shareList ? shareList->xid : None;
378 req->isDirect = gc->isDirect;
379 break;
380 }
381
382 case X_GLXvop_CreateContextWithConfigSGIX: {
383 xGLXVendorPrivateWithReplyReq *vpreq;
384 xGLXCreateContextWithConfigSGIXReq *req;
385
386 /* Send the glXCreateNewContext request */
387 GetReqExtra(GLXVendorPrivateWithReply,
388 sz_xGLXCreateContextWithConfigSGIXReq -
389 sz_xGLXVendorPrivateWithReplyReq, vpreq);
390 req = (xGLXCreateContextWithConfigSGIXReq *) vpreq;
391 req->reqType = gc->majorOpcode;
392 req->glxCode = X_GLXVendorPrivateWithReply;
393 req->vendorCode = X_GLXvop_CreateContextWithConfigSGIX;
394 req->context = gc->xid = XAllocID(dpy);
395 req->fbconfig = generic_id;
396 req->screen = screen;
397 req->renderType = renderType;
398 req->shareList = shareList ? shareList->xid : None;
399 req->isDirect = gc->isDirect;
400 break;
401 }
402
403 default:
404 /* What to do here? This case is the sign of an internal error. It
405 * should never be reachable.
406 */
407 break;
408 }
409
410 UnlockDisplay(dpy);
411 SyncHandle();
412
413 gc->share_xid = shareList ? shareList->xid : None;
414 gc->imported = GL_FALSE;
415
416 /* Unlike most X resource creation requests, we're about to return a handle
417 * with client-side state, not just an XID. To simplify error handling
418 * elsewhere in libGL, force a round-trip here to ensure the CreateContext
419 * request above succeeded.
420 */
421 {
422 Bool error = False;
423 int isDirect = __glXIsDirect(dpy, gc->xid, &error);
424
425 if (error != False || isDirect != gc->isDirect) {
426 gc->vtable->destroy(gc);
427 gc = NULL;
428 }
429 }
430
431 return (GLXContext) gc;
432 }
433
434 _GLX_PUBLIC GLXContext
glXCreateContext(Display * dpy,XVisualInfo * vis,GLXContext shareList,Bool allowDirect)435 glXCreateContext(Display * dpy, XVisualInfo * vis,
436 GLXContext shareList, Bool allowDirect)
437 {
438 struct glx_config *config = NULL;
439 int renderType = GLX_RGBA_TYPE;
440
441 #if defined(GLX_DIRECT_RENDERING) || defined(GLX_USE_APPLEGL)
442 struct glx_screen *const psc = GetGLXScreenConfigs(dpy, vis->screen);
443
444 if (psc)
445 config = glx_config_find_visual(psc->visuals, vis->visualid);
446
447 if (config == NULL) {
448 __glXSendError(dpy, BadValue, vis->visualid, X_GLXCreateContext, True);
449 return None;
450 }
451
452 /* Choose the context render type based on DRI config values. It is
453 * unusual to set this type from config, but we have no other choice, as
454 * this old API does not provide renderType parameter.
455 */
456 if (config->renderType & GLX_RGBA_FLOAT_BIT_ARB) {
457 renderType = GLX_RGBA_FLOAT_TYPE_ARB;
458 } else if (config->renderType & GLX_RGBA_UNSIGNED_FLOAT_BIT_EXT) {
459 renderType = GLX_RGBA_UNSIGNED_FLOAT_TYPE_EXT;
460 } else if (config->renderType & GLX_RGBA_BIT) {
461 renderType = GLX_RGBA_TYPE;
462 } else if (config->renderType & GLX_COLOR_INDEX_BIT) {
463 renderType = GLX_COLOR_INDEX_TYPE;
464 }
465 #endif
466
467 return CreateContext(dpy, vis->visualid, config, shareList, allowDirect,
468 X_GLXCreateContext, renderType, vis->screen);
469 }
470
471 static void
glx_send_destroy_context(Display * dpy,XID xid)472 glx_send_destroy_context(Display *dpy, XID xid)
473 {
474 CARD8 opcode = __glXSetupForCommand(dpy);
475 xGLXDestroyContextReq *req;
476
477 LockDisplay(dpy);
478 GetReq(GLXDestroyContext, req);
479 req->reqType = opcode;
480 req->glxCode = X_GLXDestroyContext;
481 req->context = xid;
482 UnlockDisplay(dpy);
483 SyncHandle();
484 }
485
486 /*
487 ** Destroy the named context
488 */
489
490 _GLX_PUBLIC void
glXDestroyContext(Display * dpy,GLXContext ctx)491 glXDestroyContext(Display * dpy, GLXContext ctx)
492 {
493 struct glx_context *gc = (struct glx_context *) ctx;
494
495 if (gc == NULL || gc->xid == None)
496 return;
497
498 __glXLock();
499 if (!gc->imported)
500 glx_send_destroy_context(dpy, gc->xid);
501
502 if (gc->currentDpy) {
503 /* This context is bound to some thread. According to the man page,
504 * we should not actually delete the context until it's unbound.
505 * Note that we set gc->xid = None above. In MakeContextCurrent()
506 * we check for that and delete the context there.
507 */
508 gc->xid = None;
509 } else {
510 gc->vtable->destroy(gc);
511 }
512 __glXUnlock();
513 }
514
515 /*
516 ** Return the major and minor version #s for the GLX extension
517 */
518 _GLX_PUBLIC Bool
glXQueryVersion(Display * dpy,int * major,int * minor)519 glXQueryVersion(Display * dpy, int *major, int *minor)
520 {
521 struct glx_display *priv;
522
523 /* Init the extension. This fetches the major and minor version. */
524 priv = __glXInitialize(dpy);
525 if (!priv)
526 return False;
527
528 if (major)
529 *major = priv->majorVersion;
530 if (minor)
531 *minor = priv->minorVersion;
532 return True;
533 }
534
535 /*
536 ** Query the existence of the GLX extension
537 */
538 _GLX_PUBLIC Bool
glXQueryExtension(Display * dpy,int * errorBase,int * eventBase)539 glXQueryExtension(Display * dpy, int *errorBase, int *eventBase)
540 {
541 int major_op, erb, evb;
542 Bool rv;
543
544 rv = XQueryExtension(dpy, GLX_EXTENSION_NAME, &major_op, &evb, &erb);
545 if (rv) {
546 if (errorBase)
547 *errorBase = erb;
548 if (eventBase)
549 *eventBase = evb;
550 }
551 return rv;
552 }
553
554 /*
555 ** Put a barrier in the token stream that forces the GL to finish its
556 ** work before X can proceed.
557 */
558 _GLX_PUBLIC void
glXWaitGL(void)559 glXWaitGL(void)
560 {
561 struct glx_context *gc = __glXGetCurrentContext();
562
563 if (gc->vtable->wait_gl)
564 gc->vtable->wait_gl(gc);
565 }
566
567 /*
568 ** Put a barrier in the token stream that forces X to finish its
569 ** work before GL can proceed.
570 */
571 _GLX_PUBLIC void
glXWaitX(void)572 glXWaitX(void)
573 {
574 struct glx_context *gc = __glXGetCurrentContext();
575
576 if (gc->vtable->wait_x)
577 gc->vtable->wait_x(gc);
578 }
579
580 _GLX_PUBLIC void
glXUseXFont(Font font,int first,int count,int listBase)581 glXUseXFont(Font font, int first, int count, int listBase)
582 {
583 struct glx_context *gc = __glXGetCurrentContext();
584
585 if (gc->vtable->use_x_font)
586 gc->vtable->use_x_font(gc, font, first, count, listBase);
587 }
588
589 /************************************************************************/
590
591 /*
592 ** Copy the source context to the destination context using the
593 ** attribute "mask".
594 */
595 _GLX_PUBLIC void
glXCopyContext(Display * dpy,GLXContext source_user,GLXContext dest_user,unsigned long mask)596 glXCopyContext(Display * dpy, GLXContext source_user,
597 GLXContext dest_user, unsigned long mask)
598 {
599 struct glx_context *source = (struct glx_context *) source_user;
600 struct glx_context *dest = (struct glx_context *) dest_user;
601 #ifdef GLX_USE_APPLEGL
602 struct glx_context *gc = __glXGetCurrentContext();
603 int errorcode;
604 bool x11error;
605
606 if(apple_glx_copy_context(gc->driContext, source->driContext, dest->driContext,
607 mask, &errorcode, &x11error)) {
608 __glXSendError(dpy, errorcode, 0, X_GLXCopyContext, x11error);
609 }
610
611 #else
612 xGLXCopyContextReq *req;
613 struct glx_context *gc = __glXGetCurrentContext();
614 GLXContextTag tag;
615 CARD8 opcode;
616
617 opcode = __glXSetupForCommand(dpy);
618 if (!opcode) {
619 return;
620 }
621
622 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
623 if (gc->isDirect) {
624 /* NOT_DONE: This does not work yet */
625 }
626 #endif
627
628 /*
629 ** If the source is the current context, send its tag so that the context
630 ** can be flushed before the copy.
631 */
632 if (source == gc && dpy == gc->currentDpy) {
633 tag = gc->currentContextTag;
634 }
635 else {
636 tag = 0;
637 }
638
639 /* Send the glXCopyContext request */
640 LockDisplay(dpy);
641 GetReq(GLXCopyContext, req);
642 req->reqType = opcode;
643 req->glxCode = X_GLXCopyContext;
644 req->source = source ? source->xid : None;
645 req->dest = dest ? dest->xid : None;
646 req->mask = mask;
647 req->contextTag = tag;
648 UnlockDisplay(dpy);
649 SyncHandle();
650 #endif /* GLX_USE_APPLEGL */
651 }
652
653
654 /**
655 * \todo
656 * Shouldn't this function \b always return \c False when
657 * \c GLX_DIRECT_RENDERING is not defined? Do we really need to bother with
658 * the GLX protocol here at all?
659 */
660 _GLX_PUBLIC Bool
glXIsDirect(Display * dpy,GLXContext gc_user)661 glXIsDirect(Display * dpy, GLXContext gc_user)
662 {
663 struct glx_context *gc = (struct glx_context *) gc_user;
664
665 if (!gc) {
666 return False;
667 }
668 else if (gc->isDirect) {
669 return True;
670 }
671 #ifdef GLX_USE_APPLEGL /* TODO: indirect on darwin */
672 return False;
673 #else
674 return __glXIsDirect(dpy, gc->xid, NULL);
675 #endif
676 }
677
678 _GLX_PUBLIC GLXPixmap
glXCreateGLXPixmap(Display * dpy,XVisualInfo * vis,Pixmap pixmap)679 glXCreateGLXPixmap(Display * dpy, XVisualInfo * vis, Pixmap pixmap)
680 {
681 #ifdef GLX_USE_APPLEGL
682 int screen = vis->screen;
683 struct glx_screen *const psc = GetGLXScreenConfigs(dpy, screen);
684 const struct glx_config *config;
685
686 config = glx_config_find_visual(psc->visuals, vis->visualid);
687
688 if(apple_glx_pixmap_create(dpy, vis->screen, pixmap, config))
689 return None;
690
691 return pixmap;
692 #else
693 xGLXCreateGLXPixmapReq *req;
694 struct glx_drawable *glxDraw;
695 GLXPixmap xid;
696 CARD8 opcode;
697
698 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
699 struct glx_display *const priv = __glXInitialize(dpy);
700
701 if (priv == NULL)
702 return None;
703 #endif
704
705 opcode = __glXSetupForCommand(dpy);
706 if (!opcode) {
707 return None;
708 }
709
710 glxDraw = malloc(sizeof(*glxDraw));
711 if (!glxDraw)
712 return None;
713
714 /* Send the glXCreateGLXPixmap request */
715 LockDisplay(dpy);
716 GetReq(GLXCreateGLXPixmap, req);
717 req->reqType = opcode;
718 req->glxCode = X_GLXCreateGLXPixmap;
719 req->screen = vis->screen;
720 req->visual = vis->visualid;
721 req->pixmap = pixmap;
722 req->glxpixmap = xid = XAllocID(dpy);
723 UnlockDisplay(dpy);
724 SyncHandle();
725
726 if (InitGLXDrawable(dpy, glxDraw, pixmap, req->glxpixmap)) {
727 free(glxDraw);
728 return None;
729 }
730
731 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
732 do {
733 /* FIXME: Maybe delay __DRIdrawable creation until the drawable
734 * is actually bound to a context... */
735
736 __GLXDRIdrawable *pdraw;
737 struct glx_screen *psc;
738 struct glx_config *config;
739
740 psc = priv->screens[vis->screen];
741 if (psc->driScreen == NULL)
742 return xid;
743
744 config = glx_config_find_visual(psc->visuals, vis->visualid);
745 pdraw = psc->driScreen->createDrawable(psc, pixmap, xid, config);
746 if (pdraw == NULL) {
747 fprintf(stderr, "failed to create pixmap\n");
748 xid = None;
749 break;
750 }
751
752 if (__glxHashInsert(priv->drawHash, xid, pdraw)) {
753 (*pdraw->destroyDrawable) (pdraw);
754 xid = None;
755 break;
756 }
757 } while (0);
758
759 if (xid == None) {
760 xGLXDestroyGLXPixmapReq *dreq;
761 LockDisplay(dpy);
762 GetReq(GLXDestroyGLXPixmap, dreq);
763 dreq->reqType = opcode;
764 dreq->glxCode = X_GLXDestroyGLXPixmap;
765 dreq->glxpixmap = xid;
766 UnlockDisplay(dpy);
767 SyncHandle();
768 }
769 #endif
770
771 return xid;
772 #endif
773 }
774
775 /*
776 ** Destroy the named pixmap
777 */
778 _GLX_PUBLIC void
glXDestroyGLXPixmap(Display * dpy,GLXPixmap glxpixmap)779 glXDestroyGLXPixmap(Display * dpy, GLXPixmap glxpixmap)
780 {
781 #ifdef GLX_USE_APPLEGL
782 if(apple_glx_pixmap_destroy(dpy, glxpixmap))
783 __glXSendError(dpy, GLXBadPixmap, glxpixmap, X_GLXDestroyPixmap, false);
784 #else
785 xGLXDestroyGLXPixmapReq *req;
786 CARD8 opcode;
787
788 opcode = __glXSetupForCommand(dpy);
789 if (!opcode) {
790 return;
791 }
792
793 /* Send the glXDestroyGLXPixmap request */
794 LockDisplay(dpy);
795 GetReq(GLXDestroyGLXPixmap, req);
796 req->reqType = opcode;
797 req->glxCode = X_GLXDestroyGLXPixmap;
798 req->glxpixmap = glxpixmap;
799 UnlockDisplay(dpy);
800 SyncHandle();
801
802 DestroyGLXDrawable(dpy, glxpixmap);
803
804 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
805 {
806 struct glx_display *const priv = __glXInitialize(dpy);
807 __GLXDRIdrawable *pdraw = GetGLXDRIDrawable(dpy, glxpixmap);
808
809 if (priv != NULL && pdraw != NULL) {
810 (*pdraw->destroyDrawable) (pdraw);
811 __glxHashDelete(priv->drawHash, glxpixmap);
812 }
813 }
814 #endif
815 #endif /* GLX_USE_APPLEGL */
816 }
817
818 _GLX_PUBLIC void
glXSwapBuffers(Display * dpy,GLXDrawable drawable)819 glXSwapBuffers(Display * dpy, GLXDrawable drawable)
820 {
821 #ifdef GLX_USE_APPLEGL
822 struct glx_context * gc = __glXGetCurrentContext();
823 if(gc != &dummyContext && apple_glx_is_current_drawable(dpy, gc->driContext, drawable)) {
824 apple_glx_swap_buffers(gc->driContext);
825 } else {
826 __glXSendError(dpy, GLXBadCurrentWindow, 0, X_GLXSwapBuffers, false);
827 }
828 #else
829 struct glx_context *gc;
830 GLXContextTag tag;
831 CARD8 opcode;
832 xcb_connection_t *c;
833
834 gc = __glXGetCurrentContext();
835
836 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
837 {
838 __GLXDRIdrawable *pdraw = GetGLXDRIDrawable(dpy, drawable);
839
840 if (pdraw != NULL) {
841 Bool flush = gc != &dummyContext && drawable == gc->currentDrawable;
842
843 pdraw->psc->driScreen->swapBuffers(pdraw, 0, 0, 0, flush);
844 return;
845 }
846 }
847 #endif
848
849 opcode = __glXSetupForCommand(dpy);
850 if (!opcode) {
851 return;
852 }
853
854 /*
855 ** The calling thread may or may not have a current context. If it
856 ** does, send the context tag so the server can do a flush.
857 */
858 if ((gc != &dummyContext) && (dpy == gc->currentDpy) &&
859 ((drawable == gc->currentDrawable)
860 || (drawable == gc->currentReadable))) {
861 tag = gc->currentContextTag;
862 }
863 else {
864 tag = 0;
865 }
866
867 c = XGetXCBConnection(dpy);
868 xcb_glx_swap_buffers(c, tag, drawable);
869 xcb_flush(c);
870 #endif /* GLX_USE_APPLEGL */
871 }
872
873
874 /*
875 ** Return configuration information for the given display, screen and
876 ** visual combination.
877 */
878 _GLX_PUBLIC int
glXGetConfig(Display * dpy,XVisualInfo * vis,int attribute,int * value_return)879 glXGetConfig(Display * dpy, XVisualInfo * vis, int attribute,
880 int *value_return)
881 {
882 struct glx_display *priv;
883 struct glx_screen *psc;
884 struct glx_config *config;
885 int status;
886
887 status = GetGLXPrivScreenConfig(dpy, vis->screen, &priv, &psc);
888 if (status == Success) {
889 config = glx_config_find_visual(psc->visuals, vis->visualid);
890
891 /* Lookup attribute after first finding a match on the visual */
892 if (config != NULL) {
893 return glx_config_get(config, attribute, value_return);
894 }
895
896 status = GLX_BAD_VISUAL;
897 }
898
899 /*
900 ** If we can't find the config for this visual, this visual is not
901 ** supported by the OpenGL implementation on the server.
902 */
903 if ((status == GLX_BAD_VISUAL) && (attribute == GLX_USE_GL)) {
904 *value_return = False;
905 status = Success;
906 }
907
908 return status;
909 }
910
911 /************************************************************************/
912
913 static void
init_fbconfig_for_chooser(struct glx_config * config,GLboolean fbconfig_style_tags)914 init_fbconfig_for_chooser(struct glx_config * config,
915 GLboolean fbconfig_style_tags)
916 {
917 memset(config, 0, sizeof(struct glx_config));
918 config->visualID = (XID) GLX_DONT_CARE;
919 config->visualType = GLX_DONT_CARE;
920
921 /* glXChooseFBConfig specifies different defaults for these properties than
922 * glXChooseVisual.
923 */
924 if (fbconfig_style_tags) {
925 config->doubleBufferMode = GLX_DONT_CARE;
926 config->renderType = GLX_RGBA_BIT;
927 }
928
929 config->drawableType = GLX_WINDOW_BIT;
930 config->visualRating = GLX_DONT_CARE;
931 config->transparentPixel = GLX_NONE;
932 config->transparentRed = GLX_DONT_CARE;
933 config->transparentGreen = GLX_DONT_CARE;
934 config->transparentBlue = GLX_DONT_CARE;
935 config->transparentAlpha = GLX_DONT_CARE;
936 config->transparentIndex = GLX_DONT_CARE;
937
938 config->xRenderable = GLX_DONT_CARE;
939 config->fbconfigID = (GLXFBConfigID) (GLX_DONT_CARE);
940
941 config->swapMethod = GLX_DONT_CARE;
942 config->sRGBCapable = GLX_DONT_CARE;
943 }
944
945 #define MATCH_DONT_CARE( param ) \
946 do { \
947 if ( ((int) a-> param != (int) GLX_DONT_CARE) \
948 && (a-> param != b-> param) ) { \
949 return False; \
950 } \
951 } while ( 0 )
952
953 #define MATCH_MINIMUM( param ) \
954 do { \
955 if ( ((int) a-> param != (int) GLX_DONT_CARE) \
956 && (a-> param > b-> param) ) { \
957 return False; \
958 } \
959 } while ( 0 )
960
961 #define MATCH_EXACT( param ) \
962 do { \
963 if ( a-> param != b-> param) { \
964 return False; \
965 } \
966 } while ( 0 )
967
968 /* Test that all bits from a are contained in b */
969 #define MATCH_MASK(param) \
970 do { \
971 if ( ((int) a-> param != (int) GLX_DONT_CARE) \
972 && ((a->param & ~b->param) != 0) ) { \
973 return False; \
974 } \
975 } while (0);
976
977 /**
978 * Determine if two GLXFBConfigs are compatible.
979 *
980 * \param a Application specified config to test.
981 * \param b Server specified config to test against \c a.
982 */
983 static Bool
fbconfigs_compatible(const struct glx_config * const a,const struct glx_config * const b)984 fbconfigs_compatible(const struct glx_config * const a,
985 const struct glx_config * const b)
986 {
987 MATCH_DONT_CARE(doubleBufferMode);
988 MATCH_DONT_CARE(visualType);
989 MATCH_DONT_CARE(visualRating);
990 MATCH_DONT_CARE(xRenderable);
991 MATCH_DONT_CARE(fbconfigID);
992 MATCH_DONT_CARE(swapMethod);
993
994 MATCH_MINIMUM(rgbBits);
995 MATCH_MINIMUM(numAuxBuffers);
996 MATCH_MINIMUM(redBits);
997 MATCH_MINIMUM(greenBits);
998 MATCH_MINIMUM(blueBits);
999 MATCH_MINIMUM(alphaBits);
1000 MATCH_MINIMUM(depthBits);
1001 MATCH_MINIMUM(stencilBits);
1002 MATCH_MINIMUM(accumRedBits);
1003 MATCH_MINIMUM(accumGreenBits);
1004 MATCH_MINIMUM(accumBlueBits);
1005 MATCH_MINIMUM(accumAlphaBits);
1006 MATCH_MINIMUM(sampleBuffers);
1007 MATCH_MINIMUM(maxPbufferWidth);
1008 MATCH_MINIMUM(maxPbufferHeight);
1009 MATCH_MINIMUM(maxPbufferPixels);
1010 MATCH_MINIMUM(samples);
1011
1012 MATCH_DONT_CARE(stereoMode);
1013 MATCH_EXACT(level);
1014
1015 MATCH_MASK(drawableType);
1016 MATCH_MASK(renderType);
1017 MATCH_DONT_CARE(sRGBCapable);
1018
1019 /* There is a bug in a few of the XFree86 DDX drivers. They contain
1020 * visuals with a "transparent type" of 0 when they really mean GLX_NONE.
1021 * Technically speaking, it is a bug in the DDX driver, but there is
1022 * enough of an installed base to work around the problem here. In any
1023 * case, 0 is not a valid value of the transparent type, so we'll treat 0
1024 * from the app as GLX_DONT_CARE. We'll consider GLX_NONE from the app and
1025 * 0 from the server to be a match to maintain backward compatibility with
1026 * the (broken) drivers.
1027 */
1028
1029 if (a->transparentPixel != (int) GLX_DONT_CARE && a->transparentPixel != 0) {
1030 if (a->transparentPixel == GLX_NONE) {
1031 if (b->transparentPixel != GLX_NONE && b->transparentPixel != 0)
1032 return False;
1033 }
1034 else {
1035 MATCH_EXACT(transparentPixel);
1036 }
1037
1038 switch (a->transparentPixel) {
1039 case GLX_TRANSPARENT_RGB:
1040 MATCH_DONT_CARE(transparentRed);
1041 MATCH_DONT_CARE(transparentGreen);
1042 MATCH_DONT_CARE(transparentBlue);
1043 MATCH_DONT_CARE(transparentAlpha);
1044 break;
1045
1046 case GLX_TRANSPARENT_INDEX:
1047 MATCH_DONT_CARE(transparentIndex);
1048 break;
1049
1050 default:
1051 break;
1052 }
1053 }
1054
1055 return True;
1056 }
1057
1058
1059 /* There's some trickly language in the GLX spec about how this is supposed
1060 * to work. Basically, if a given component size is either not specified
1061 * or the requested size is zero, it is supposed to act like PERFER_SMALLER.
1062 * Well, that's really hard to do with the code as-is. This behavior is
1063 * closer to correct, but still not technically right.
1064 */
1065 #define PREFER_LARGER_OR_ZERO(comp) \
1066 do { \
1067 if ( ((*a)-> comp) != ((*b)-> comp) ) { \
1068 if ( ((*a)-> comp) == 0 ) { \
1069 return -1; \
1070 } \
1071 else if ( ((*b)-> comp) == 0 ) { \
1072 return 1; \
1073 } \
1074 else { \
1075 return ((*b)-> comp) - ((*a)-> comp) ; \
1076 } \
1077 } \
1078 } while( 0 )
1079
1080 #define PREFER_LARGER(comp) \
1081 do { \
1082 if ( ((*a)-> comp) != ((*b)-> comp) ) { \
1083 return ((*b)-> comp) - ((*a)-> comp) ; \
1084 } \
1085 } while( 0 )
1086
1087 #define PREFER_SMALLER(comp) \
1088 do { \
1089 if ( ((*a)-> comp) != ((*b)-> comp) ) { \
1090 return ((*a)-> comp) - ((*b)-> comp) ; \
1091 } \
1092 } while( 0 )
1093
1094 /**
1095 * Compare two GLXFBConfigs. This function is intended to be used as the
1096 * compare function passed in to qsort.
1097 *
1098 * \returns If \c a is a "better" config, according to the specification of
1099 * SGIX_fbconfig, a number less than zero is returned. If \c b is
1100 * better, then a number greater than zero is return. If both are
1101 * equal, zero is returned.
1102 * \sa qsort, glXChooseVisual, glXChooseFBConfig, glXChooseFBConfigSGIX
1103 */
1104 static int
fbconfig_compare(struct glx_config ** a,struct glx_config ** b)1105 fbconfig_compare(struct glx_config **a, struct glx_config **b)
1106 {
1107 /* The order of these comparisons must NOT change. It is defined by
1108 * the GLX 1.4 specification.
1109 */
1110
1111 PREFER_SMALLER(visualSelectGroup);
1112
1113 /* The sort order for the visualRating is GLX_NONE, GLX_SLOW, and
1114 * GLX_NON_CONFORMANT_CONFIG. It just so happens that this is the
1115 * numerical sort order of the enums (0x8000, 0x8001, and 0x800D).
1116 */
1117 PREFER_SMALLER(visualRating);
1118
1119 /* This isn't quite right. It is supposed to compare the sum of the
1120 * components the user specifically set minimums for.
1121 */
1122 PREFER_LARGER_OR_ZERO(redBits);
1123 PREFER_LARGER_OR_ZERO(greenBits);
1124 PREFER_LARGER_OR_ZERO(blueBits);
1125 PREFER_LARGER_OR_ZERO(alphaBits);
1126
1127 PREFER_SMALLER(rgbBits);
1128
1129 if (((*a)->doubleBufferMode != (*b)->doubleBufferMode)) {
1130 /* Prefer single-buffer.
1131 */
1132 return (!(*a)->doubleBufferMode) ? -1 : 1;
1133 }
1134
1135 PREFER_SMALLER(numAuxBuffers);
1136
1137 PREFER_SMALLER(sampleBuffers);
1138 PREFER_SMALLER(samples);
1139
1140 PREFER_LARGER_OR_ZERO(depthBits);
1141 PREFER_SMALLER(stencilBits);
1142
1143 /* This isn't quite right. It is supposed to compare the sum of the
1144 * components the user specifically set minimums for.
1145 */
1146 PREFER_LARGER_OR_ZERO(accumRedBits);
1147 PREFER_LARGER_OR_ZERO(accumGreenBits);
1148 PREFER_LARGER_OR_ZERO(accumBlueBits);
1149 PREFER_LARGER_OR_ZERO(accumAlphaBits);
1150
1151 PREFER_SMALLER(visualType);
1152
1153 /* None of the pbuffer or fbconfig specs say that this comparison needs
1154 * to happen at all, but it seems like it should.
1155 */
1156 PREFER_LARGER(maxPbufferWidth);
1157 PREFER_LARGER(maxPbufferHeight);
1158 PREFER_LARGER(maxPbufferPixels);
1159
1160 return 0;
1161 }
1162
1163
1164 /**
1165 * Selects and sorts a subset of the supplied configs based on the attributes.
1166 * This function forms to basis of \c glXChooseFBConfig and
1167 * \c glXChooseFBConfigSGIX.
1168 *
1169 * \param configs Array of pointers to possible configs. The elements of
1170 * this array that do not meet the criteria will be set to
1171 * NULL. The remaining elements will be sorted according to
1172 * the various visual / FBConfig selection rules.
1173 * \param num_configs Number of elements in the \c configs array.
1174 * \param attribList Attributes used select from \c configs. This array is
1175 * terminated by a \c None tag. The array is of the form
1176 * expected by \c glXChooseFBConfig (where every tag has a
1177 * value).
1178 * \returns The number of valid elements left in \c configs.
1179 *
1180 * \sa glXChooseFBConfig, glXChooseFBConfigSGIX
1181 */
1182 static int
choose_fbconfig(struct glx_config ** configs,int num_configs,const int * attribList)1183 choose_fbconfig(struct glx_config ** configs, int num_configs,
1184 const int *attribList)
1185 {
1186 struct glx_config test_config;
1187 int base;
1188 int i;
1189
1190 /* This is a fairly direct implementation of the selection method
1191 * described by GLX_SGIX_fbconfig. Start by culling out all the
1192 * configs that are not compatible with the selected parameter
1193 * list.
1194 */
1195
1196 init_fbconfig_for_chooser(&test_config, GL_TRUE);
1197 __glXInitializeVisualConfigFromTags(&test_config, 512,
1198 (const INT32 *) attribList,
1199 GL_TRUE, GL_TRUE);
1200
1201 base = 0;
1202 for (i = 0; i < num_configs; i++) {
1203 if (fbconfigs_compatible(&test_config, configs[i])) {
1204 configs[base] = configs[i];
1205 base++;
1206 }
1207 }
1208
1209 if (base == 0) {
1210 return 0;
1211 }
1212
1213 if (base < num_configs) {
1214 (void) memset(&configs[base], 0, sizeof(void *) * (num_configs - base));
1215 }
1216
1217 /* After the incompatible configs are removed, the resulting
1218 * list is sorted according to the rules set out in the various
1219 * specifications.
1220 */
1221
1222 qsort(configs, base, sizeof(struct glx_config *),
1223 (int (*)(const void *, const void *)) fbconfig_compare);
1224 return base;
1225 }
1226
1227
1228
1229
1230 /*
1231 ** Return the visual that best matches the template. Return None if no
1232 ** visual matches the template.
1233 */
1234 _GLX_PUBLIC XVisualInfo *
glXChooseVisual(Display * dpy,int screen,int * attribList)1235 glXChooseVisual(Display * dpy, int screen, int *attribList)
1236 {
1237 XVisualInfo *visualList = NULL;
1238 struct glx_display *priv;
1239 struct glx_screen *psc;
1240 struct glx_config test_config;
1241 struct glx_config *config;
1242 struct glx_config *best_config = NULL;
1243
1244 /*
1245 ** Get a list of all visuals, return if list is empty
1246 */
1247 if (GetGLXPrivScreenConfig(dpy, screen, &priv, &psc) != Success) {
1248 return None;
1249 }
1250
1251
1252 /*
1253 ** Build a template from the defaults and the attribute list
1254 ** Free visual list and return if an unexpected token is encountered
1255 */
1256 init_fbconfig_for_chooser(&test_config, GL_FALSE);
1257 __glXInitializeVisualConfigFromTags(&test_config, 512,
1258 (const INT32 *) attribList,
1259 GL_TRUE, GL_FALSE);
1260
1261 /*
1262 ** Eliminate visuals that don't meet minimum requirements
1263 ** Compute a score for those that do
1264 ** Remember which visual, if any, got the highest score
1265 ** If no visual is acceptable, return None
1266 ** Otherwise, create an XVisualInfo list with just the selected X visual
1267 ** and return this.
1268 */
1269 for (config = psc->visuals; config != NULL; config = config->next) {
1270 if (fbconfigs_compatible(&test_config, config)
1271 && ((best_config == NULL) ||
1272 (fbconfig_compare (&config, &best_config) < 0))) {
1273 XVisualInfo visualTemplate;
1274 XVisualInfo *newList;
1275 int i;
1276
1277 visualTemplate.screen = screen;
1278 visualTemplate.visualid = config->visualID;
1279 newList = XGetVisualInfo(dpy, VisualScreenMask | VisualIDMask,
1280 &visualTemplate, &i);
1281
1282 if (newList) {
1283 free(visualList);
1284 visualList = newList;
1285 best_config = config;
1286 }
1287 }
1288 }
1289
1290 #ifdef GLX_USE_APPLEGL
1291 if(visualList && env_var_as_boolean("LIBGL_DUMP_VISUALID", false)) {
1292 printf("visualid 0x%lx\n", visualList[0].visualid);
1293 }
1294 #endif
1295
1296 return visualList;
1297 }
1298
1299
1300 _GLX_PUBLIC const char *
glXQueryExtensionsString(Display * dpy,int screen)1301 glXQueryExtensionsString(Display * dpy, int screen)
1302 {
1303 struct glx_screen *psc;
1304 struct glx_display *priv;
1305
1306 if (GetGLXPrivScreenConfig(dpy, screen, &priv, &psc) != Success) {
1307 return NULL;
1308 }
1309
1310 if (!psc->effectiveGLXexts) {
1311 if (!psc->serverGLXexts) {
1312 psc->serverGLXexts =
1313 __glXQueryServerString(dpy, priv->majorOpcode, screen,
1314 GLX_EXTENSIONS);
1315 }
1316
1317 __glXCalculateUsableExtensions(psc,
1318 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
1319 (psc->driScreen != NULL),
1320 #else
1321 GL_FALSE,
1322 #endif
1323 priv->minorVersion);
1324 }
1325
1326 return psc->effectiveGLXexts;
1327 }
1328
1329 _GLX_PUBLIC const char *
glXGetClientString(Display * dpy,int name)1330 glXGetClientString(Display * dpy, int name)
1331 {
1332 (void) dpy;
1333
1334 switch (name) {
1335 case GLX_VENDOR:
1336 return (__glXGLXClientVendorName);
1337 case GLX_VERSION:
1338 return (__glXGLXClientVersion);
1339 case GLX_EXTENSIONS:
1340 return (__glXGetClientExtensions());
1341 default:
1342 return NULL;
1343 }
1344 }
1345
1346 _GLX_PUBLIC const char *
glXQueryServerString(Display * dpy,int screen,int name)1347 glXQueryServerString(Display * dpy, int screen, int name)
1348 {
1349 struct glx_screen *psc;
1350 struct glx_display *priv;
1351 const char **str;
1352
1353
1354 if (GetGLXPrivScreenConfig(dpy, screen, &priv, &psc) != Success) {
1355 return NULL;
1356 }
1357
1358 switch (name) {
1359 case GLX_VENDOR:
1360 str = &priv->serverGLXvendor;
1361 break;
1362 case GLX_VERSION:
1363 str = &priv->serverGLXversion;
1364 break;
1365 case GLX_EXTENSIONS:
1366 str = &psc->serverGLXexts;
1367 break;
1368 default:
1369 return NULL;
1370 }
1371
1372 if (*str == NULL) {
1373 *str = __glXQueryServerString(dpy, priv->majorOpcode, screen, name);
1374 }
1375
1376 return *str;
1377 }
1378
1379
1380 /*
1381 ** EXT_import_context
1382 */
1383
1384 _GLX_PUBLIC Display *
glXGetCurrentDisplay(void)1385 glXGetCurrentDisplay(void)
1386 {
1387 struct glx_context *gc = __glXGetCurrentContext();
1388 if (gc == &dummyContext)
1389 return NULL;
1390 return gc->currentDpy;
1391 }
1392
1393 _GLX_PUBLIC
1394 GLX_ALIAS(Display *, glXGetCurrentDisplayEXT, (void), (),
1395 glXGetCurrentDisplay)
1396
1397 #ifndef GLX_USE_APPLEGL
1398 _GLX_PUBLIC GLXContext
glXImportContextEXT(Display * dpy,GLXContextID contextID)1399 glXImportContextEXT(Display *dpy, GLXContextID contextID)
1400 {
1401 struct glx_display *priv = __glXInitialize(dpy);
1402 struct glx_screen *psc = NULL;
1403 xGLXQueryContextReply reply;
1404 CARD8 opcode;
1405 struct glx_context *ctx;
1406 int i, renderType = GLX_RGBA_TYPE; /* By default, assume RGBA context */
1407 XID share = None;
1408 struct glx_config *mode = NULL;
1409 uint32_t fbconfigID = 0;
1410 uint32_t visualID = 0;
1411 uint32_t screen = 0;
1412 Bool got_screen = False;
1413
1414 if (priv == NULL)
1415 return NULL;
1416
1417 /* The GLX_EXT_import_context spec says:
1418 *
1419 * "If <contextID> does not refer to a valid context, then a BadContext
1420 * error is generated; if <contextID> refers to direct rendering
1421 * context then no error is generated but glXImportContextEXT returns
1422 * NULL."
1423 *
1424 * If contextID is None, generate BadContext on the client-side. Other
1425 * sorts of invalid contexts will be detected by the server in the
1426 * __glXIsDirect call.
1427 */
1428 if (contextID == None) {
1429 __glXSendError(dpy, GLXBadContext, contextID, X_GLXIsDirect, false);
1430 return NULL;
1431 }
1432
1433 if (__glXIsDirect(dpy, contextID, NULL))
1434 return NULL;
1435
1436 opcode = __glXSetupForCommand(dpy);
1437 if (!opcode)
1438 return 0;
1439
1440 /* Send the glXQueryContextInfoEXT request */
1441 LockDisplay(dpy);
1442
1443 if (priv->majorVersion > 1 || priv->minorVersion >= 3) {
1444 xGLXQueryContextReq *req;
1445
1446 GetReq(GLXQueryContext, req);
1447
1448 req->reqType = opcode;
1449 req->glxCode = X_GLXQueryContext;
1450 req->context = contextID;
1451 }
1452 else {
1453 xGLXVendorPrivateReq *vpreq;
1454 xGLXQueryContextInfoEXTReq *req;
1455
1456 GetReqExtra(GLXVendorPrivate,
1457 sz_xGLXQueryContextInfoEXTReq - sz_xGLXVendorPrivateReq,
1458 vpreq);
1459 req = (xGLXQueryContextInfoEXTReq *) vpreq;
1460 req->reqType = opcode;
1461 req->glxCode = X_GLXVendorPrivateWithReply;
1462 req->vendorCode = X_GLXvop_QueryContextInfoEXT;
1463 req->context = contextID;
1464 }
1465
1466 if (_XReply(dpy, (xReply *) & reply, 0, False) &&
1467 reply.n < (INT32_MAX / 2)) {
1468
1469 for (i = 0; i < reply.n; i++) {
1470 int prop[2];
1471
1472 _XRead(dpy, (char *)prop, sizeof(prop));
1473 switch (prop[0]) {
1474 case GLX_SCREEN:
1475 screen = prop[1];
1476 got_screen = True;
1477 break;
1478 case GLX_SHARE_CONTEXT_EXT:
1479 share = prop[1];
1480 break;
1481 case GLX_VISUAL_ID_EXT:
1482 visualID = prop[1];
1483 break;
1484 case GLX_FBCONFIG_ID:
1485 fbconfigID = prop[1];
1486 break;
1487 case GLX_RENDER_TYPE:
1488 renderType = prop[1];
1489 break;
1490 }
1491 }
1492 }
1493 UnlockDisplay(dpy);
1494 SyncHandle();
1495
1496 if (!got_screen)
1497 return NULL;
1498
1499 psc = GetGLXScreenConfigs(dpy, screen);
1500 if (psc == NULL)
1501 return NULL;
1502
1503 if (fbconfigID != 0) {
1504 mode = glx_config_find_fbconfig(psc->configs, fbconfigID);
1505 } else if (visualID != 0) {
1506 mode = glx_config_find_visual(psc->visuals, visualID);
1507 }
1508
1509 if (mode == NULL)
1510 return NULL;
1511
1512 ctx = indirect_create_context(psc, mode, NULL, renderType);
1513 if (ctx == NULL)
1514 return NULL;
1515
1516 ctx->xid = contextID;
1517 ctx->imported = GL_TRUE;
1518 ctx->share_xid = share;
1519
1520 return (GLXContext) ctx;
1521 }
1522
1523 #endif
1524
1525 _GLX_PUBLIC int
glXQueryContext(Display * dpy,GLXContext ctx_user,int attribute,int * value)1526 glXQueryContext(Display * dpy, GLXContext ctx_user, int attribute, int *value)
1527 {
1528 struct glx_context *ctx = (struct glx_context *) ctx_user;
1529
1530 switch (attribute) {
1531 case GLX_SHARE_CONTEXT_EXT:
1532 *value = ctx->share_xid;
1533 break;
1534 case GLX_VISUAL_ID_EXT:
1535 *value = ctx->config ? ctx->config->visualID : None;
1536 break;
1537 case GLX_SCREEN:
1538 *value = ctx->screen;
1539 break;
1540 case GLX_FBCONFIG_ID:
1541 *value = ctx->config ? ctx->config->fbconfigID : None;
1542 break;
1543 case GLX_RENDER_TYPE:
1544 *value = ctx->renderType;
1545 break;
1546 default:
1547 return GLX_BAD_ATTRIBUTE;
1548 }
1549 return Success;
1550 }
1551
1552 _GLX_PUBLIC
1553 GLX_ALIAS(int, glXQueryContextInfoEXT,
1554 (Display * dpy, GLXContext ctx, int attribute, int *value),
1555 (dpy, ctx, attribute, value), glXQueryContext)
1556
glXGetContextIDEXT(const GLXContext ctx_user)1557 _GLX_PUBLIC GLXContextID glXGetContextIDEXT(const GLXContext ctx_user)
1558 {
1559 struct glx_context *ctx = (struct glx_context *) ctx_user;
1560
1561 return (ctx == NULL) ? None : ctx->xid;
1562 }
1563
1564 _GLX_PUBLIC void
glXFreeContextEXT(Display * dpy,GLXContext ctx)1565 glXFreeContextEXT(Display *dpy, GLXContext ctx)
1566 {
1567 struct glx_context *gc = (struct glx_context *) ctx;
1568
1569 if (gc == NULL || gc->xid == None)
1570 return;
1571
1572 /* The GLX_EXT_import_context spec says:
1573 *
1574 * "glXFreeContext does not free the server-side context information or
1575 * the XID associated with the server-side context."
1576 *
1577 * Don't send any protocol. Just destroy the client-side tracking of the
1578 * context. Also, only release the context structure if it's not current.
1579 */
1580 __glXLock();
1581 if (gc->currentDpy) {
1582 gc->xid = None;
1583 } else {
1584 gc->vtable->destroy(gc);
1585 }
1586 __glXUnlock();
1587 }
1588
1589 _GLX_PUBLIC GLXFBConfig *
glXChooseFBConfig(Display * dpy,int screen,const int * attribList,int * nitems)1590 glXChooseFBConfig(Display * dpy, int screen,
1591 const int *attribList, int *nitems)
1592 {
1593 struct glx_config **config_list;
1594 int list_size;
1595
1596
1597 config_list = (struct glx_config **)
1598 glXGetFBConfigs(dpy, screen, &list_size);
1599
1600 if ((config_list != NULL) && (list_size > 0) && (attribList != NULL)) {
1601 list_size = choose_fbconfig(config_list, list_size, attribList);
1602 if (list_size == 0) {
1603 free(config_list);
1604 config_list = NULL;
1605 }
1606 }
1607
1608 *nitems = list_size;
1609 return (GLXFBConfig *) config_list;
1610 }
1611
1612
1613 _GLX_PUBLIC GLXContext
glXCreateNewContext(Display * dpy,GLXFBConfig fbconfig,int renderType,GLXContext shareList,Bool allowDirect)1614 glXCreateNewContext(Display * dpy, GLXFBConfig fbconfig,
1615 int renderType, GLXContext shareList, Bool allowDirect)
1616 {
1617 struct glx_config *config = (struct glx_config *) fbconfig;
1618 struct glx_config **config_list;
1619 int list_size;
1620 unsigned i;
1621
1622 if (!config) {
1623 __glXSendError(dpy, GLXBadFBConfig, 0, X_GLXCreateNewContext, false);
1624 return NULL;
1625 }
1626
1627 config_list = (struct glx_config **)
1628 glXGetFBConfigs(dpy, config->screen, &list_size);
1629
1630 for (i = 0; i < list_size; i++) {
1631 if (config_list[i] == config)
1632 break;
1633 }
1634 free(config_list);
1635
1636 if (i == list_size) {
1637 __glXSendError(dpy, GLXBadFBConfig, 0, X_GLXCreateNewContext, false);
1638 return NULL;
1639 }
1640
1641 return CreateContext(dpy, config->fbconfigID, config, shareList,
1642 allowDirect, X_GLXCreateNewContext, renderType,
1643 config->screen);
1644 }
1645
1646
1647 _GLX_PUBLIC GLXDrawable
glXGetCurrentReadDrawable(void)1648 glXGetCurrentReadDrawable(void)
1649 {
1650 struct glx_context *gc = __glXGetCurrentContext();
1651
1652 return gc->currentReadable;
1653 }
1654
1655
1656 _GLX_PUBLIC GLXFBConfig *
glXGetFBConfigs(Display * dpy,int screen,int * nelements)1657 glXGetFBConfigs(Display * dpy, int screen, int *nelements)
1658 {
1659 struct glx_display *priv = __glXInitialize(dpy);
1660 struct glx_config **config_list = NULL;
1661 struct glx_config *config;
1662 unsigned num_configs = 0;
1663 int i;
1664
1665 *nelements = 0;
1666 if (priv && (priv->screens != NULL)
1667 && (screen >= 0) && (screen < ScreenCount(dpy))
1668 && (priv->screens[screen]->configs != NULL)
1669 && (priv->screens[screen]->configs->fbconfigID
1670 != (int) GLX_DONT_CARE)) {
1671
1672 for (config = priv->screens[screen]->configs; config != NULL;
1673 config = config->next) {
1674 if (config->fbconfigID != (int) GLX_DONT_CARE) {
1675 num_configs++;
1676 }
1677 }
1678
1679 config_list = malloc(num_configs * sizeof *config_list);
1680 if (config_list != NULL) {
1681 *nelements = num_configs;
1682 i = 0;
1683 for (config = priv->screens[screen]->configs; config != NULL;
1684 config = config->next) {
1685 if (config->fbconfigID != (int) GLX_DONT_CARE) {
1686 config_list[i] = config;
1687 i++;
1688 }
1689 }
1690 }
1691 }
1692
1693 return (GLXFBConfig *) config_list;
1694 }
1695
1696
1697 _GLX_PUBLIC int
glXGetFBConfigAttrib(Display * dpy,GLXFBConfig fbconfig,int attribute,int * value)1698 glXGetFBConfigAttrib(Display * dpy, GLXFBConfig fbconfig,
1699 int attribute, int *value)
1700 {
1701 struct glx_config *config = ValidateGLXFBConfig(dpy, fbconfig);
1702
1703 if (config == NULL)
1704 return GLXBadFBConfig;
1705
1706 return glx_config_get(config, attribute, value);
1707 }
1708
1709
1710 _GLX_PUBLIC XVisualInfo *
glXGetVisualFromFBConfig(Display * dpy,GLXFBConfig fbconfig)1711 glXGetVisualFromFBConfig(Display * dpy, GLXFBConfig fbconfig)
1712 {
1713 XVisualInfo visualTemplate;
1714 struct glx_config *config = (struct glx_config *) fbconfig;
1715 int count;
1716
1717 /*
1718 ** Get a list of all visuals, return if list is empty
1719 */
1720 visualTemplate.visualid = config->visualID;
1721 return XGetVisualInfo(dpy, VisualIDMask, &visualTemplate, &count);
1722 }
1723
1724 #ifndef GLX_USE_APPLEGL
1725 /*
1726 ** GLX_SGI_swap_control
1727 */
1728 _X_HIDDEN int
glXSwapIntervalSGI(int interval)1729 glXSwapIntervalSGI(int interval)
1730 {
1731 xGLXVendorPrivateReq *req;
1732 struct glx_context *gc = __glXGetCurrentContext();
1733 #ifdef GLX_DIRECT_RENDERING
1734 struct glx_screen *psc;
1735 #endif
1736 Display *dpy;
1737 CARD32 *interval_ptr;
1738 CARD8 opcode;
1739
1740 if (gc == &dummyContext) {
1741 return GLX_BAD_CONTEXT;
1742 }
1743
1744 if (interval <= 0) {
1745 return GLX_BAD_VALUE;
1746 }
1747
1748 #ifdef GLX_DIRECT_RENDERING
1749 psc = GetGLXScreenConfigs( gc->currentDpy, gc->screen);
1750
1751 if (gc->isDirect && psc && psc->driScreen &&
1752 psc->driScreen->setSwapInterval) {
1753 __GLXDRIdrawable *pdraw =
1754 GetGLXDRIDrawable(gc->currentDpy, gc->currentDrawable);
1755 /* Simply ignore the command if the GLX drawable has been destroyed but
1756 * the context is still bound.
1757 */
1758 if (pdraw)
1759 psc->driScreen->setSwapInterval(pdraw, interval);
1760 return 0;
1761 }
1762 #endif
1763
1764 dpy = gc->currentDpy;
1765 opcode = __glXSetupForCommand(dpy);
1766 if (!opcode) {
1767 return 0;
1768 }
1769
1770 /* Send the glXSwapIntervalSGI request */
1771 LockDisplay(dpy);
1772 GetReqExtra(GLXVendorPrivate, sizeof(CARD32), req);
1773 req->reqType = opcode;
1774 req->glxCode = X_GLXVendorPrivate;
1775 req->vendorCode = X_GLXvop_SwapIntervalSGI;
1776 req->contextTag = gc->currentContextTag;
1777
1778 interval_ptr = (CARD32 *) (req + 1);
1779 *interval_ptr = interval;
1780
1781 UnlockDisplay(dpy);
1782 SyncHandle();
1783 XFlush(dpy);
1784
1785 return 0;
1786 }
1787
1788
1789 /*
1790 ** GLX_MESA_swap_control
1791 */
1792 _X_HIDDEN int
glXSwapIntervalMESA(unsigned int interval)1793 glXSwapIntervalMESA(unsigned int interval)
1794 {
1795 #ifdef GLX_DIRECT_RENDERING
1796 struct glx_context *gc = __glXGetCurrentContext();
1797
1798 if (interval > INT_MAX)
1799 return GLX_BAD_VALUE;
1800
1801 if (gc != &dummyContext && gc->isDirect) {
1802 struct glx_screen *psc;
1803
1804 psc = GetGLXScreenConfigs( gc->currentDpy, gc->screen);
1805 if (psc && psc->driScreen && psc->driScreen->setSwapInterval) {
1806 __GLXDRIdrawable *pdraw =
1807 GetGLXDRIDrawable(gc->currentDpy, gc->currentDrawable);
1808
1809 /* Simply ignore the command if the GLX drawable has been destroyed but
1810 * the context is still bound.
1811 */
1812 if (!pdraw)
1813 return 0;
1814
1815 return psc->driScreen->setSwapInterval(pdraw, interval);
1816 }
1817 }
1818 #endif
1819
1820 return GLX_BAD_CONTEXT;
1821 }
1822
1823
1824 _X_HIDDEN int
glXGetSwapIntervalMESA(void)1825 glXGetSwapIntervalMESA(void)
1826 {
1827 #ifdef GLX_DIRECT_RENDERING
1828 struct glx_context *gc = __glXGetCurrentContext();
1829
1830 if (gc != &dummyContext && gc->isDirect) {
1831 struct glx_screen *psc;
1832
1833 psc = GetGLXScreenConfigs( gc->currentDpy, gc->screen);
1834 if (psc && psc->driScreen && psc->driScreen->getSwapInterval) {
1835 __GLXDRIdrawable *pdraw =
1836 GetGLXDRIDrawable(gc->currentDpy, gc->currentDrawable);
1837 if (pdraw)
1838 return psc->driScreen->getSwapInterval(pdraw);
1839 }
1840 }
1841 #endif
1842
1843 return 0;
1844 }
1845
1846
1847 /*
1848 ** GLX_EXT_swap_control
1849 */
1850 _X_HIDDEN void
glXSwapIntervalEXT(Display * dpy,GLXDrawable drawable,int interval)1851 glXSwapIntervalEXT(Display *dpy, GLXDrawable drawable, int interval)
1852 {
1853 #ifdef GLX_DIRECT_RENDERING
1854 __GLXDRIdrawable *pdraw = GetGLXDRIDrawable(dpy, drawable);
1855
1856 /*
1857 * Strictly, this should throw an error if drawable is not a Window or
1858 * GLXWindow. We don't actually track that, so, oh well.
1859 */
1860 if (!pdraw) {
1861 __glXSendError(dpy, BadWindow, drawable, 0, True);
1862 return;
1863 }
1864
1865 if (interval < 0 &&
1866 !__glXExtensionBitIsEnabled(pdraw->psc, EXT_swap_control_tear_bit)) {
1867 __glXSendError(dpy, BadValue, interval, 0, True);
1868 return;
1869 }
1870
1871 pdraw->psc->driScreen->setSwapInterval(pdraw, interval);
1872 #endif
1873 }
1874
1875
1876 /*
1877 ** GLX_SGI_video_sync
1878 */
1879 _X_HIDDEN int
glXGetVideoSyncSGI(unsigned int * count)1880 glXGetVideoSyncSGI(unsigned int *count)
1881 {
1882 #ifdef GLX_DIRECT_RENDERING
1883 int64_t ust, msc, sbc;
1884 int ret;
1885 struct glx_context *gc = __glXGetCurrentContext();
1886 struct glx_screen *psc;
1887 __GLXDRIdrawable *pdraw;
1888
1889 if (gc == &dummyContext)
1890 return GLX_BAD_CONTEXT;
1891
1892 if (!gc->isDirect)
1893 return GLX_BAD_CONTEXT;
1894
1895 psc = GetGLXScreenConfigs(gc->currentDpy, gc->screen);
1896 pdraw = GetGLXDRIDrawable(gc->currentDpy, gc->currentDrawable);
1897
1898 /* FIXME: Looking at the GLX_SGI_video_sync spec in the extension registry,
1899 * FIXME: there should be a GLX encoding for this call. I can find no
1900 * FIXME: documentation for the GLX encoding.
1901 */
1902 if (psc && psc->driScreen && psc->driScreen->getDrawableMSC) {
1903 ret = psc->driScreen->getDrawableMSC(psc, pdraw, &ust, &msc, &sbc);
1904 *count = (unsigned) msc;
1905 return (ret == True) ? 0 : GLX_BAD_CONTEXT;
1906 }
1907 #endif
1908
1909 return GLX_BAD_CONTEXT;
1910 }
1911
1912 _X_HIDDEN int
glXWaitVideoSyncSGI(int divisor,int remainder,unsigned int * count)1913 glXWaitVideoSyncSGI(int divisor, int remainder, unsigned int *count)
1914 {
1915 struct glx_context *gc = __glXGetCurrentContext();
1916 #ifdef GLX_DIRECT_RENDERING
1917 struct glx_screen *psc;
1918 __GLXDRIdrawable *pdraw;
1919 int64_t ust, msc, sbc;
1920 int ret;
1921 #endif
1922
1923 if (divisor <= 0 || remainder < 0)
1924 return GLX_BAD_VALUE;
1925
1926 if (gc == &dummyContext)
1927 return GLX_BAD_CONTEXT;
1928
1929 #ifdef GLX_DIRECT_RENDERING
1930 if (!gc->isDirect)
1931 return GLX_BAD_CONTEXT;
1932
1933 psc = GetGLXScreenConfigs( gc->currentDpy, gc->screen);
1934 pdraw = GetGLXDRIDrawable(gc->currentDpy, gc->currentDrawable);
1935
1936 if (psc && psc->driScreen && psc->driScreen->waitForMSC) {
1937 ret = psc->driScreen->waitForMSC(pdraw, 0, divisor, remainder, &ust, &msc,
1938 &sbc);
1939 *count = (unsigned) msc;
1940 return (ret == True) ? 0 : GLX_BAD_CONTEXT;
1941 }
1942 #endif
1943
1944 return GLX_BAD_CONTEXT;
1945 }
1946
1947 #endif /* GLX_USE_APPLEGL */
1948
1949 /*
1950 ** GLX_SGIX_fbconfig
1951 ** Many of these functions are aliased to GLX 1.3 entry points in the
1952 ** GLX_functions table.
1953 */
1954
1955 _GLX_PUBLIC
1956 GLX_ALIAS(int, glXGetFBConfigAttribSGIX,
1957 (Display * dpy, GLXFBConfigSGIX config, int attribute, int *value),
1958 (dpy, config, attribute, value), glXGetFBConfigAttrib)
1959
1960 _GLX_PUBLIC GLX_ALIAS(GLXFBConfigSGIX *, glXChooseFBConfigSGIX,
1961 (Display * dpy, int screen, int *attrib_list,
1962 int *nelements), (dpy, screen, attrib_list, nelements),
1963 glXChooseFBConfig)
1964
1965 _GLX_PUBLIC GLX_ALIAS(XVisualInfo *, glXGetVisualFromFBConfigSGIX,
1966 (Display * dpy, GLXFBConfigSGIX config),
1967 (dpy, config), glXGetVisualFromFBConfig)
1968
1969 _GLX_PUBLIC GLXPixmap
glXCreateGLXPixmapWithConfigSGIX(Display * dpy,GLXFBConfigSGIX fbconfig,Pixmap pixmap)1970 glXCreateGLXPixmapWithConfigSGIX(Display * dpy,
1971 GLXFBConfigSGIX fbconfig,
1972 Pixmap pixmap)
1973 {
1974 #ifndef GLX_USE_APPLEGL
1975 xGLXVendorPrivateWithReplyReq *vpreq;
1976 xGLXCreateGLXPixmapWithConfigSGIXReq *req;
1977 GLXPixmap xid = None;
1978 CARD8 opcode;
1979 struct glx_screen *psc;
1980 #endif
1981 struct glx_config *config = (struct glx_config *) fbconfig;
1982
1983
1984 if ((dpy == NULL) || (config == NULL)) {
1985 return None;
1986 }
1987 #ifdef GLX_USE_APPLEGL
1988 if(apple_glx_pixmap_create(dpy, config->screen, pixmap, config))
1989 return None;
1990 return pixmap;
1991 #else
1992
1993 psc = GetGLXScreenConfigs(dpy, config->screen);
1994 if ((psc != NULL)
1995 && __glXExtensionBitIsEnabled(psc, SGIX_fbconfig_bit)) {
1996 opcode = __glXSetupForCommand(dpy);
1997 if (!opcode) {
1998 return None;
1999 }
2000
2001 /* Send the glXCreateGLXPixmapWithConfigSGIX request */
2002 LockDisplay(dpy);
2003 GetReqExtra(GLXVendorPrivateWithReply,
2004 sz_xGLXCreateGLXPixmapWithConfigSGIXReq -
2005 sz_xGLXVendorPrivateWithReplyReq, vpreq);
2006 req = (xGLXCreateGLXPixmapWithConfigSGIXReq *) vpreq;
2007 req->reqType = opcode;
2008 req->glxCode = X_GLXVendorPrivateWithReply;
2009 req->vendorCode = X_GLXvop_CreateGLXPixmapWithConfigSGIX;
2010 req->screen = config->screen;
2011 req->fbconfig = config->fbconfigID;
2012 req->pixmap = pixmap;
2013 req->glxpixmap = xid = XAllocID(dpy);
2014 UnlockDisplay(dpy);
2015 SyncHandle();
2016 }
2017
2018 return xid;
2019 #endif
2020 }
2021
2022 _GLX_PUBLIC GLXContext
glXCreateContextWithConfigSGIX(Display * dpy,GLXFBConfigSGIX fbconfig,int renderType,GLXContext shareList,Bool allowDirect)2023 glXCreateContextWithConfigSGIX(Display * dpy,
2024 GLXFBConfigSGIX fbconfig, int renderType,
2025 GLXContext shareList, Bool allowDirect)
2026 {
2027 GLXContext gc = NULL;
2028 struct glx_config *config = (struct glx_config *) fbconfig;
2029 struct glx_screen *psc;
2030
2031
2032 if ((dpy == NULL) || (config == NULL)) {
2033 return None;
2034 }
2035
2036 psc = GetGLXScreenConfigs(dpy, config->screen);
2037 if ((psc != NULL)
2038 && __glXExtensionBitIsEnabled(psc, SGIX_fbconfig_bit)) {
2039 gc = CreateContext(dpy, config->fbconfigID, config, shareList,
2040 allowDirect,
2041 X_GLXvop_CreateContextWithConfigSGIX, renderType,
2042 config->screen);
2043 }
2044
2045 return gc;
2046 }
2047
2048
2049 _GLX_PUBLIC GLXFBConfigSGIX
glXGetFBConfigFromVisualSGIX(Display * dpy,XVisualInfo * vis)2050 glXGetFBConfigFromVisualSGIX(Display * dpy, XVisualInfo * vis)
2051 {
2052 struct glx_display *priv;
2053 struct glx_screen *psc = NULL;
2054
2055 if ((GetGLXPrivScreenConfig(dpy, vis->screen, &priv, &psc) == Success)
2056 && __glXExtensionBitIsEnabled(psc, SGIX_fbconfig_bit)
2057 && (psc->configs->fbconfigID != (int) GLX_DONT_CARE)) {
2058 return (GLXFBConfigSGIX) glx_config_find_visual(psc->configs,
2059 vis->visualid);
2060 }
2061
2062 return NULL;
2063 }
2064
2065 #ifndef GLX_USE_APPLEGL
2066 /*
2067 ** GLX_OML_sync_control
2068 */
2069 _X_HIDDEN Bool
glXGetSyncValuesOML(Display * dpy,GLXDrawable drawable,int64_t * ust,int64_t * msc,int64_t * sbc)2070 glXGetSyncValuesOML(Display *dpy, GLXDrawable drawable,
2071 int64_t *ust, int64_t *msc, int64_t *sbc)
2072 {
2073 struct glx_display * const priv = __glXInitialize(dpy);
2074 #ifdef GLX_DIRECT_RENDERING
2075 int ret;
2076 __GLXDRIdrawable *pdraw;
2077 struct glx_screen *psc;
2078 #endif
2079
2080 if (!priv)
2081 return False;
2082
2083 #ifdef GLX_DIRECT_RENDERING
2084 pdraw = GetGLXDRIDrawable(dpy, drawable);
2085 psc = pdraw ? pdraw->psc : NULL;
2086 if (pdraw && psc->driScreen->getDrawableMSC) {
2087 ret = psc->driScreen->getDrawableMSC(psc, pdraw, ust, msc, sbc);
2088 return ret;
2089 }
2090 #endif
2091
2092 return False;
2093 }
2094
2095 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
2096 _X_HIDDEN GLboolean
__glxGetMscRate(struct glx_screen * psc,int32_t * numerator,int32_t * denominator)2097 __glxGetMscRate(struct glx_screen *psc,
2098 int32_t * numerator, int32_t * denominator)
2099 {
2100 #if !defined(GLX_USE_WINDOWSGL)
2101 XF86VidModeModeLine mode_line;
2102 int dot_clock;
2103 int i;
2104
2105 if (XF86VidModeQueryVersion(psc->dpy, &i, &i) &&
2106 XF86VidModeGetModeLine(psc->dpy, psc->scr, &dot_clock, &mode_line)) {
2107 unsigned n = dot_clock * 1000;
2108 unsigned d = mode_line.vtotal * mode_line.htotal;
2109
2110 # define V_INTERLACE 0x010
2111 # define V_DBLSCAN 0x020
2112
2113 if (mode_line.flags & V_INTERLACE)
2114 n *= 2;
2115 else if (mode_line.flags & V_DBLSCAN)
2116 d *= 2;
2117
2118 /* The OML_sync_control spec requires that if the refresh rate is a
2119 * whole number, that the returned numerator be equal to the refresh
2120 * rate and the denominator be 1.
2121 */
2122
2123 if (n % d == 0) {
2124 n /= d;
2125 d = 1;
2126 }
2127 else {
2128 static const unsigned f[] = { 13, 11, 7, 5, 3, 2, 0 };
2129
2130 /* This is a poor man's way to reduce a fraction. It's far from
2131 * perfect, but it will work well enough for this situation.
2132 */
2133
2134 for (i = 0; f[i] != 0; i++) {
2135 while (n % f[i] == 0 && d % f[i] == 0) {
2136 d /= f[i];
2137 n /= f[i];
2138 }
2139 }
2140 }
2141
2142 *numerator = n;
2143 *denominator = d;
2144
2145 return True;
2146 }
2147 #endif
2148
2149 return False;
2150 }
2151 #endif
2152
2153 /**
2154 * Determine the refresh rate of the specified drawable and display.
2155 *
2156 * \param dpy Display whose refresh rate is to be determined.
2157 * \param drawable Drawable whose refresh rate is to be determined.
2158 * \param numerator Numerator of the refresh rate.
2159 * \param demoninator Denominator of the refresh rate.
2160 * \return If the refresh rate for the specified display and drawable could
2161 * be calculated, True is returned. Otherwise False is returned.
2162 *
2163 * \note This function is implemented entirely client-side. A lot of other
2164 * functionality is required to export GLX_OML_sync_control, so on
2165 * XFree86 this function can be called for direct-rendering contexts
2166 * when GLX_OML_sync_control appears in the client extension string.
2167 */
2168
2169 _X_HIDDEN Bool
glXGetMscRateOML(Display * dpy,GLXDrawable drawable,int32_t * numerator,int32_t * denominator)2170 glXGetMscRateOML(Display * dpy, GLXDrawable drawable,
2171 int32_t * numerator, int32_t * denominator)
2172 {
2173 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL) && !defined(GLX_USE_WINDOWSGL)
2174 __GLXDRIdrawable *draw = GetGLXDRIDrawable(dpy, drawable);
2175
2176 if (draw == NULL)
2177 return False;
2178
2179 return __glxGetMscRate(draw->psc, numerator, denominator);
2180 #else
2181 (void) dpy;
2182 (void) drawable;
2183 (void) numerator;
2184 (void) denominator;
2185 #endif
2186 return False;
2187 }
2188
2189
2190 _X_HIDDEN int64_t
glXSwapBuffersMscOML(Display * dpy,GLXDrawable drawable,int64_t target_msc,int64_t divisor,int64_t remainder)2191 glXSwapBuffersMscOML(Display *dpy, GLXDrawable drawable,
2192 int64_t target_msc, int64_t divisor, int64_t remainder)
2193 {
2194 struct glx_context *gc = __glXGetCurrentContext();
2195 #ifdef GLX_DIRECT_RENDERING
2196 __GLXDRIdrawable *pdraw = GetGLXDRIDrawable(dpy, drawable);
2197 struct glx_screen *psc = pdraw ? pdraw->psc : NULL;
2198 #endif
2199
2200 if (gc == &dummyContext) /* no GLX for this */
2201 return -1;
2202
2203 #ifdef GLX_DIRECT_RENDERING
2204 if (!pdraw || !gc->isDirect)
2205 return -1;
2206 #endif
2207
2208 /* The OML_sync_control spec says these should "generate a GLX_BAD_VALUE
2209 * error", but it also says "It [glXSwapBuffersMscOML] will return a value
2210 * of -1 if the function failed because of errors detected in the input
2211 * parameters"
2212 */
2213 if (divisor < 0 || remainder < 0 || target_msc < 0)
2214 return -1;
2215 if (divisor > 0 && remainder >= divisor)
2216 return -1;
2217
2218 if (target_msc == 0 && divisor == 0 && remainder == 0)
2219 remainder = 1;
2220
2221 #ifdef GLX_DIRECT_RENDERING
2222 if (psc->driScreen && psc->driScreen->swapBuffers)
2223 return (*psc->driScreen->swapBuffers)(pdraw, target_msc, divisor,
2224 remainder, False);
2225 #endif
2226
2227 return -1;
2228 }
2229
2230
2231 _X_HIDDEN Bool
glXWaitForMscOML(Display * dpy,GLXDrawable drawable,int64_t target_msc,int64_t divisor,int64_t remainder,int64_t * ust,int64_t * msc,int64_t * sbc)2232 glXWaitForMscOML(Display *dpy, GLXDrawable drawable, int64_t target_msc,
2233 int64_t divisor, int64_t remainder, int64_t *ust,
2234 int64_t *msc, int64_t *sbc)
2235 {
2236 #ifdef GLX_DIRECT_RENDERING
2237 __GLXDRIdrawable *pdraw = GetGLXDRIDrawable(dpy, drawable);
2238 struct glx_screen *psc = pdraw ? pdraw->psc : NULL;
2239 int ret;
2240 #endif
2241
2242
2243 /* The OML_sync_control spec says these should "generate a GLX_BAD_VALUE
2244 * error", but the return type in the spec is Bool.
2245 */
2246 if (divisor < 0 || remainder < 0 || target_msc < 0)
2247 return False;
2248 if (divisor > 0 && remainder >= divisor)
2249 return False;
2250
2251 #ifdef GLX_DIRECT_RENDERING
2252 if (pdraw && psc->driScreen && psc->driScreen->waitForMSC) {
2253 ret = psc->driScreen->waitForMSC(pdraw, target_msc, divisor, remainder,
2254 ust, msc, sbc);
2255 return ret;
2256 }
2257 #endif
2258
2259 return False;
2260 }
2261
2262
2263 _X_HIDDEN Bool
glXWaitForSbcOML(Display * dpy,GLXDrawable drawable,int64_t target_sbc,int64_t * ust,int64_t * msc,int64_t * sbc)2264 glXWaitForSbcOML(Display *dpy, GLXDrawable drawable, int64_t target_sbc,
2265 int64_t *ust, int64_t *msc, int64_t *sbc)
2266 {
2267 #ifdef GLX_DIRECT_RENDERING
2268 __GLXDRIdrawable *pdraw = GetGLXDRIDrawable(dpy, drawable);
2269 struct glx_screen *psc = pdraw ? pdraw->psc : NULL;
2270 int ret;
2271 #endif
2272
2273 /* The OML_sync_control spec says this should "generate a GLX_BAD_VALUE
2274 * error", but the return type in the spec is Bool.
2275 */
2276 if (target_sbc < 0)
2277 return False;
2278
2279 #ifdef GLX_DIRECT_RENDERING
2280 if (pdraw && psc->driScreen && psc->driScreen->waitForSBC) {
2281 ret = psc->driScreen->waitForSBC(pdraw, target_sbc, ust, msc, sbc);
2282 return ret;
2283 }
2284 #endif
2285
2286 return False;
2287 }
2288
2289 /*@}*/
2290
2291
2292 /**
2293 * Mesa extension stubs. These will help reduce portability problems.
2294 */
2295 /*@{*/
2296
2297 /**
2298 * Release all buffers associated with the specified GLX drawable.
2299 *
2300 * \todo
2301 * This function was intended for stand-alone Mesa. The issue there is that
2302 * the library doesn't get any notification when a window is closed. In
2303 * DRI there is a similar but slightly different issue. When GLX 1.3 is
2304 * supported, there are 3 different functions to destroy a drawable. It
2305 * should be possible to create GLX protocol (or have it determine which
2306 * protocol to use based on the type of the drawable) to have one function
2307 * do the work of 3. For the direct-rendering case, this function could
2308 * just call the driver's \c __DRIdrawableRec::destroyDrawable function.
2309 * This would reduce the frequency with which \c __driGarbageCollectDrawables
2310 * would need to be used. This really should be done as part of the new DRI
2311 * interface work.
2312 *
2313 * \sa http://oss.sgi.com/projects/ogl-sample/registry/MESA/release_buffers.txt
2314 * __driGarbageCollectDrawables
2315 * glXDestroyGLXPixmap
2316 * glXDestroyPbuffer glXDestroyPixmap glXDestroyWindow
2317 * glXDestroyGLXPbufferSGIX glXDestroyGLXVideoSourceSGIX
2318 */
2319 _X_HIDDEN Bool
glXReleaseBuffersMESA(Display * dpy,GLXDrawable d)2320 glXReleaseBuffersMESA(Display * dpy, GLXDrawable d)
2321 {
2322 (void) dpy;
2323 (void) d;
2324 return False;
2325 }
2326
2327
2328 _GLX_PUBLIC GLXPixmap
glXCreateGLXPixmapMESA(Display * dpy,XVisualInfo * visual,Pixmap pixmap,Colormap cmap)2329 glXCreateGLXPixmapMESA(Display * dpy, XVisualInfo * visual,
2330 Pixmap pixmap, Colormap cmap)
2331 {
2332 (void) dpy;
2333 (void) visual;
2334 (void) pixmap;
2335 (void) cmap;
2336 return 0;
2337 }
2338
2339 /*@}*/
2340
2341
2342 /**
2343 * GLX_MESA_copy_sub_buffer
2344 */
2345 #define X_GLXvop_CopySubBufferMESA 5154 /* temporary */
2346 _X_HIDDEN void
glXCopySubBufferMESA(Display * dpy,GLXDrawable drawable,int x,int y,int width,int height)2347 glXCopySubBufferMESA(Display * dpy, GLXDrawable drawable,
2348 int x, int y, int width, int height)
2349 {
2350 xGLXVendorPrivateReq *req;
2351 struct glx_context *gc;
2352 GLXContextTag tag;
2353 CARD32 *drawable_ptr;
2354 INT32 *x_ptr, *y_ptr, *w_ptr, *h_ptr;
2355 CARD8 opcode;
2356
2357 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
2358 __GLXDRIdrawable *pdraw = GetGLXDRIDrawable(dpy, drawable);
2359 if (pdraw != NULL) {
2360 struct glx_screen *psc = pdraw->psc;
2361 if (psc->driScreen->copySubBuffer != NULL) {
2362 (*psc->driScreen->copySubBuffer) (pdraw, x, y, width, height, True);
2363 }
2364
2365 return;
2366 }
2367 #endif
2368
2369 opcode = __glXSetupForCommand(dpy);
2370 if (!opcode)
2371 return;
2372
2373 /*
2374 ** The calling thread may or may not have a current context. If it
2375 ** does, send the context tag so the server can do a flush.
2376 */
2377 gc = __glXGetCurrentContext();
2378 if ((gc != &dummyContext) && (dpy == gc->currentDpy) &&
2379 ((drawable == gc->currentDrawable) ||
2380 (drawable == gc->currentReadable))) {
2381 tag = gc->currentContextTag;
2382 }
2383 else {
2384 tag = 0;
2385 }
2386
2387 LockDisplay(dpy);
2388 GetReqExtra(GLXVendorPrivate, sizeof(CARD32) + sizeof(INT32) * 4, req);
2389 req->reqType = opcode;
2390 req->glxCode = X_GLXVendorPrivate;
2391 req->vendorCode = X_GLXvop_CopySubBufferMESA;
2392 req->contextTag = tag;
2393
2394 drawable_ptr = (CARD32 *) (req + 1);
2395 x_ptr = (INT32 *) (drawable_ptr + 1);
2396 y_ptr = (INT32 *) (drawable_ptr + 2);
2397 w_ptr = (INT32 *) (drawable_ptr + 3);
2398 h_ptr = (INT32 *) (drawable_ptr + 4);
2399
2400 *drawable_ptr = drawable;
2401 *x_ptr = x;
2402 *y_ptr = y;
2403 *w_ptr = width;
2404 *h_ptr = height;
2405
2406 UnlockDisplay(dpy);
2407 SyncHandle();
2408 }
2409
2410 /*@{*/
2411 _X_HIDDEN void
glXBindTexImageEXT(Display * dpy,GLXDrawable drawable,int buffer,const int * attrib_list)2412 glXBindTexImageEXT(Display *dpy, GLXDrawable drawable, int buffer,
2413 const int *attrib_list)
2414 {
2415 struct glx_context *gc = __glXGetCurrentContext();
2416
2417 if (gc->vtable->bind_tex_image == NULL)
2418 return;
2419
2420 gc->vtable->bind_tex_image(dpy, drawable, buffer, attrib_list);
2421 }
2422
2423 _X_HIDDEN void
glXReleaseTexImageEXT(Display * dpy,GLXDrawable drawable,int buffer)2424 glXReleaseTexImageEXT(Display * dpy, GLXDrawable drawable, int buffer)
2425 {
2426 struct glx_context *gc = __glXGetCurrentContext();
2427
2428 if (gc->vtable->release_tex_image == NULL)
2429 return;
2430
2431 gc->vtable->release_tex_image(dpy, drawable, buffer);
2432 }
2433
2434 /*@}*/
2435
2436 #endif /* GLX_USE_APPLEGL */
2437
2438 /*
2439 ** glXGetProcAddress support
2440 */
2441
2442 struct name_address_pair
2443 {
2444 const char *Name;
2445 GLvoid *Address;
2446 };
2447
2448 #define GLX_FUNCTION(f) { # f, (GLvoid *) f }
2449 #define GLX_FUNCTION2(n,f) { # n, (GLvoid *) f }
2450
2451 static const struct name_address_pair GLX_functions[] = {
2452 /*** GLX_VERSION_1_0 ***/
2453 GLX_FUNCTION(glXChooseVisual),
2454 GLX_FUNCTION(glXCopyContext),
2455 GLX_FUNCTION(glXCreateContext),
2456 GLX_FUNCTION(glXCreateGLXPixmap),
2457 GLX_FUNCTION(glXDestroyContext),
2458 GLX_FUNCTION(glXDestroyGLXPixmap),
2459 GLX_FUNCTION(glXGetConfig),
2460 GLX_FUNCTION(glXGetCurrentContext),
2461 GLX_FUNCTION(glXGetCurrentDrawable),
2462 GLX_FUNCTION(glXIsDirect),
2463 GLX_FUNCTION(glXMakeCurrent),
2464 GLX_FUNCTION(glXQueryExtension),
2465 GLX_FUNCTION(glXQueryVersion),
2466 GLX_FUNCTION(glXSwapBuffers),
2467 GLX_FUNCTION(glXUseXFont),
2468 GLX_FUNCTION(glXWaitGL),
2469 GLX_FUNCTION(glXWaitX),
2470
2471 /*** GLX_VERSION_1_1 ***/
2472 GLX_FUNCTION(glXGetClientString),
2473 GLX_FUNCTION(glXQueryExtensionsString),
2474 GLX_FUNCTION(glXQueryServerString),
2475
2476 /*** GLX_VERSION_1_2 ***/
2477 GLX_FUNCTION(glXGetCurrentDisplay),
2478
2479 /*** GLX_VERSION_1_3 ***/
2480 GLX_FUNCTION(glXChooseFBConfig),
2481 GLX_FUNCTION(glXCreateNewContext),
2482 GLX_FUNCTION(glXCreatePbuffer),
2483 GLX_FUNCTION(glXCreatePixmap),
2484 GLX_FUNCTION(glXCreateWindow),
2485 GLX_FUNCTION(glXDestroyPbuffer),
2486 GLX_FUNCTION(glXDestroyPixmap),
2487 GLX_FUNCTION(glXDestroyWindow),
2488 GLX_FUNCTION(glXGetCurrentReadDrawable),
2489 GLX_FUNCTION(glXGetFBConfigAttrib),
2490 GLX_FUNCTION(glXGetFBConfigs),
2491 GLX_FUNCTION(glXGetSelectedEvent),
2492 GLX_FUNCTION(glXGetVisualFromFBConfig),
2493 GLX_FUNCTION(glXMakeContextCurrent),
2494 GLX_FUNCTION(glXQueryContext),
2495 GLX_FUNCTION(glXQueryDrawable),
2496 GLX_FUNCTION(glXSelectEvent),
2497
2498 /*** GLX_SGIX_fbconfig ***/
2499 GLX_FUNCTION2(glXGetFBConfigAttribSGIX, glXGetFBConfigAttrib),
2500 GLX_FUNCTION2(glXChooseFBConfigSGIX, glXChooseFBConfig),
2501 GLX_FUNCTION(glXCreateGLXPixmapWithConfigSGIX),
2502 GLX_FUNCTION(glXCreateContextWithConfigSGIX),
2503 GLX_FUNCTION2(glXGetVisualFromFBConfigSGIX, glXGetVisualFromFBConfig),
2504 GLX_FUNCTION(glXGetFBConfigFromVisualSGIX),
2505
2506 /*** GLX_ARB_get_proc_address ***/
2507 GLX_FUNCTION(glXGetProcAddressARB),
2508
2509 /*** GLX 1.4 ***/
2510 GLX_FUNCTION2(glXGetProcAddress, glXGetProcAddressARB),
2511
2512 #ifndef GLX_USE_APPLEGL
2513 /*** GLX_SGI_swap_control ***/
2514 GLX_FUNCTION(glXSwapIntervalSGI),
2515
2516 /*** GLX_SGI_video_sync ***/
2517 GLX_FUNCTION(glXGetVideoSyncSGI),
2518 GLX_FUNCTION(glXWaitVideoSyncSGI),
2519
2520 /*** GLX_SGI_make_current_read ***/
2521 GLX_FUNCTION2(glXMakeCurrentReadSGI, glXMakeContextCurrent),
2522 GLX_FUNCTION2(glXGetCurrentReadDrawableSGI, glXGetCurrentReadDrawable),
2523
2524 /*** GLX_EXT_import_context ***/
2525 GLX_FUNCTION(glXFreeContextEXT),
2526 GLX_FUNCTION(glXGetContextIDEXT),
2527 GLX_FUNCTION2(glXGetCurrentDisplayEXT, glXGetCurrentDisplay),
2528 GLX_FUNCTION(glXImportContextEXT),
2529 GLX_FUNCTION2(glXQueryContextInfoEXT, glXQueryContext),
2530
2531 /*** GLX_SGIX_pbuffer ***/
2532 GLX_FUNCTION(glXCreateGLXPbufferSGIX),
2533 GLX_FUNCTION(glXDestroyGLXPbufferSGIX),
2534 GLX_FUNCTION(glXQueryGLXPbufferSGIX),
2535 GLX_FUNCTION(glXSelectEventSGIX),
2536 GLX_FUNCTION(glXGetSelectedEventSGIX),
2537
2538 /*** GLX_MESA_copy_sub_buffer ***/
2539 GLX_FUNCTION(glXCopySubBufferMESA),
2540
2541 /*** GLX_MESA_pixmap_colormap ***/
2542 GLX_FUNCTION(glXCreateGLXPixmapMESA),
2543
2544 /*** GLX_MESA_release_buffers ***/
2545 GLX_FUNCTION(glXReleaseBuffersMESA),
2546
2547 /*** GLX_MESA_swap_control ***/
2548 GLX_FUNCTION(glXSwapIntervalMESA),
2549 GLX_FUNCTION(glXGetSwapIntervalMESA),
2550
2551 /*** GLX_OML_sync_control ***/
2552 GLX_FUNCTION(glXWaitForSbcOML),
2553 GLX_FUNCTION(glXWaitForMscOML),
2554 GLX_FUNCTION(glXSwapBuffersMscOML),
2555 GLX_FUNCTION(glXGetMscRateOML),
2556 GLX_FUNCTION(glXGetSyncValuesOML),
2557
2558 /*** GLX_EXT_texture_from_pixmap ***/
2559 GLX_FUNCTION(glXBindTexImageEXT),
2560 GLX_FUNCTION(glXReleaseTexImageEXT),
2561
2562 /*** GLX_EXT_swap_control ***/
2563 GLX_FUNCTION(glXSwapIntervalEXT),
2564 #endif
2565
2566 #if defined(GLX_DIRECT_RENDERING) && defined(GLX_USE_DRM)
2567 /*** DRI configuration ***/
2568 GLX_FUNCTION(glXGetScreenDriver),
2569 GLX_FUNCTION(glXGetDriverConfig),
2570 #endif
2571
2572 /*** GLX_ARB_create_context and GLX_ARB_create_context_profile ***/
2573 GLX_FUNCTION(glXCreateContextAttribsARB),
2574
2575 /*** GLX_MESA_query_renderer ***/
2576 GLX_FUNCTION(glXQueryRendererIntegerMESA),
2577 GLX_FUNCTION(glXQueryRendererStringMESA),
2578 GLX_FUNCTION(glXQueryCurrentRendererIntegerMESA),
2579 GLX_FUNCTION(glXQueryCurrentRendererStringMESA),
2580
2581 {NULL, NULL} /* end of list */
2582 };
2583
2584 static const GLvoid *
get_glx_proc_address(const char * funcName)2585 get_glx_proc_address(const char *funcName)
2586 {
2587 GLuint i;
2588
2589 /* try static functions */
2590 for (i = 0; GLX_functions[i].Name; i++) {
2591 if (strcmp(GLX_functions[i].Name, funcName) == 0)
2592 return GLX_functions[i].Address;
2593 }
2594
2595 return NULL;
2596 }
2597
2598 /**
2599 * Get the address of a named GL function. This is the pre-GLX 1.4 name for
2600 * \c glXGetProcAddress.
2601 *
2602 * \param procName Name of a GL or GLX function.
2603 * \returns A pointer to the named function
2604 *
2605 * \sa glXGetProcAddress
2606 */
glXGetProcAddressARB(const GLubyte * procName)2607 _GLX_PUBLIC void (*glXGetProcAddressARB(const GLubyte * procName)) (void)
2608 {
2609 typedef void (*gl_function) (void);
2610 gl_function f;
2611
2612
2613 /* Search the table of GLX and internal functions first. If that
2614 * fails and the supplied name could be a valid core GL name, try
2615 * searching the core GL function table. This check is done to prevent
2616 * DRI based drivers from searching the core GL function table for
2617 * internal API functions.
2618 */
2619 f = (gl_function) get_glx_proc_address((const char *) procName);
2620 if ((f == NULL) && (procName[0] == 'g') && (procName[1] == 'l')
2621 && (procName[2] != 'X')) {
2622 #ifdef GLX_INDIRECT_RENDERING
2623 f = (gl_function) __indirect_get_proc_address((const char *) procName);
2624 #endif
2625 if (!f)
2626 f = (gl_function) _glapi_get_proc_address((const char *) procName);
2627 if (!f) {
2628 struct glx_context *gc = __glXGetCurrentContext();
2629
2630 if (gc != NULL && gc->vtable->get_proc_address != NULL)
2631 f = gc->vtable->get_proc_address((const char *) procName);
2632 }
2633 }
2634 return f;
2635 }
2636
2637 /**
2638 * Get the address of a named GL function. This is the GLX 1.4 name for
2639 * \c glXGetProcAddressARB.
2640 *
2641 * \param procName Name of a GL or GLX function.
2642 * \returns A pointer to the named function
2643 *
2644 * \sa glXGetProcAddressARB
2645 */
2646 _GLX_PUBLIC
2647 GLX_ALIAS(__GLXextFuncPtr, glXGetProcAddress,
2648 (const GLubyte * procName),
2649 (procName), glXGetProcAddressARB)
2650
2651 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
2652
2653 PUBLIC int
MesaGLInteropGLXQueryDeviceInfo(Display * dpy,GLXContext context,struct mesa_glinterop_device_info * out)2654 MesaGLInteropGLXQueryDeviceInfo(Display *dpy, GLXContext context,
2655 struct mesa_glinterop_device_info *out)
2656 {
2657 struct glx_context *gc = (struct glx_context*)context;
2658 int ret;
2659
2660 __glXLock();
2661
2662 if (!gc || gc->xid == None || !gc->isDirect) {
2663 __glXUnlock();
2664 return MESA_GLINTEROP_INVALID_CONTEXT;
2665 }
2666
2667 if (!gc->vtable->interop_query_device_info) {
2668 __glXUnlock();
2669 return MESA_GLINTEROP_UNSUPPORTED;
2670 }
2671
2672 ret = gc->vtable->interop_query_device_info(gc, out);
2673 __glXUnlock();
2674 return ret;
2675 }
2676
2677 PUBLIC int
MesaGLInteropGLXExportObject(Display * dpy,GLXContext context,struct mesa_glinterop_export_in * in,struct mesa_glinterop_export_out * out)2678 MesaGLInteropGLXExportObject(Display *dpy, GLXContext context,
2679 struct mesa_glinterop_export_in *in,
2680 struct mesa_glinterop_export_out *out)
2681 {
2682 struct glx_context *gc = (struct glx_context*)context;
2683 int ret;
2684
2685 __glXLock();
2686
2687 if (!gc || gc->xid == None || !gc->isDirect) {
2688 __glXUnlock();
2689 return MESA_GLINTEROP_INVALID_CONTEXT;
2690 }
2691
2692 if (!gc->vtable->interop_export_object) {
2693 __glXUnlock();
2694 return MESA_GLINTEROP_UNSUPPORTED;
2695 }
2696
2697 ret = gc->vtable->interop_export_object(gc, in, out);
2698 __glXUnlock();
2699 return ret;
2700 }
2701
2702 #endif /* defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL) */
2703