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 renderType == GLX_DONT_CARE;
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 if (!config)
272 gc->renderType = GLX_DONT_CARE;
273
274 return True;
275 }
276
277 /**
278 * Determine if a context uses direct rendering.
279 *
280 * \param dpy Display where the context was created.
281 * \param contextID ID of the context to be tested.
282 * \param error Out parameter, set to True on error if not NULL,
283 * otherwise raise the error to the application.
284 *
285 * \returns \c True if the context is direct rendering or not.
286 */
287 static Bool
__glXIsDirect(Display * dpy,GLXContextID contextID,Bool * error)288 __glXIsDirect(Display * dpy, GLXContextID contextID, Bool *error)
289 {
290 CARD8 opcode;
291 xcb_connection_t *c;
292 xcb_generic_error_t *err;
293 xcb_glx_is_direct_reply_t *reply;
294 Bool is_direct;
295
296 opcode = __glXSetupForCommand(dpy);
297 if (!opcode) {
298 return False;
299 }
300
301 c = XGetXCBConnection(dpy);
302 reply = xcb_glx_is_direct_reply(c, xcb_glx_is_direct(c, contextID), &err);
303 is_direct = (reply != NULL && reply->is_direct) ? True : False;
304
305 if (err != NULL) {
306 if (error)
307 *error = True;
308 else
309 __glXSendErrorForXcb(dpy, err);
310 free(err);
311 }
312
313 free(reply);
314
315 return is_direct;
316 }
317
318 /**
319 * Create a new context.
320 *
321 * \param renderType For FBConfigs, what is the rendering type?
322 */
323
324 static GLXContext
CreateContext(Display * dpy,int generic_id,struct glx_config * config,GLXContext shareList_user,Bool allowDirect,unsigned code,int renderType,int screen)325 CreateContext(Display *dpy, int generic_id, struct glx_config *config,
326 GLXContext shareList_user, Bool allowDirect,
327 unsigned code, int renderType, int screen)
328 {
329 struct glx_context *gc;
330 struct glx_screen *psc;
331 struct glx_context *shareList = (struct glx_context *) shareList_user;
332 if (dpy == NULL)
333 return NULL;
334
335 psc = GetGLXScreenConfigs(dpy, screen);
336 if (psc == NULL)
337 return NULL;
338
339 if (generic_id == None)
340 return NULL;
341
342 gc = NULL;
343 #ifdef GLX_USE_APPLEGL
344 gc = applegl_create_context(psc, config, shareList, renderType);
345 #else
346 if (allowDirect && psc->vtable->create_context)
347 gc = psc->vtable->create_context(psc, config, shareList, renderType);
348 if (!gc)
349 gc = indirect_create_context(psc, config, shareList, renderType);
350 #endif
351 if (!gc)
352 return NULL;
353
354 LockDisplay(dpy);
355 switch (code) {
356 case X_GLXCreateContext: {
357 xGLXCreateContextReq *req;
358
359 /* Send the glXCreateContext request */
360 GetReq(GLXCreateContext, req);
361 req->reqType = gc->majorOpcode;
362 req->glxCode = X_GLXCreateContext;
363 req->context = gc->xid = XAllocID(dpy);
364 req->visual = generic_id;
365 req->screen = screen;
366 req->shareList = shareList ? shareList->xid : None;
367 req->isDirect = gc->isDirect;
368 break;
369 }
370
371 case X_GLXCreateNewContext: {
372 xGLXCreateNewContextReq *req;
373
374 /* Send the glXCreateNewContext request */
375 GetReq(GLXCreateNewContext, req);
376 req->reqType = gc->majorOpcode;
377 req->glxCode = X_GLXCreateNewContext;
378 req->context = gc->xid = XAllocID(dpy);
379 req->fbconfig = generic_id;
380 req->screen = screen;
381 req->renderType = renderType;
382 req->shareList = shareList ? shareList->xid : None;
383 req->isDirect = gc->isDirect;
384 break;
385 }
386
387 case X_GLXvop_CreateContextWithConfigSGIX: {
388 xGLXVendorPrivateWithReplyReq *vpreq;
389 xGLXCreateContextWithConfigSGIXReq *req;
390
391 /* Send the glXCreateNewContext request */
392 GetReqExtra(GLXVendorPrivateWithReply,
393 sz_xGLXCreateContextWithConfigSGIXReq -
394 sz_xGLXVendorPrivateWithReplyReq, vpreq);
395 req = (xGLXCreateContextWithConfigSGIXReq *) vpreq;
396 req->reqType = gc->majorOpcode;
397 req->glxCode = X_GLXVendorPrivateWithReply;
398 req->vendorCode = X_GLXvop_CreateContextWithConfigSGIX;
399 req->context = gc->xid = XAllocID(dpy);
400 req->fbconfig = generic_id;
401 req->screen = screen;
402 req->renderType = renderType;
403 req->shareList = shareList ? shareList->xid : None;
404 req->isDirect = gc->isDirect;
405 break;
406 }
407
408 default:
409 /* What to do here? This case is the sign of an internal error. It
410 * should never be reachable.
411 */
412 break;
413 }
414
415 UnlockDisplay(dpy);
416 SyncHandle();
417
418 gc->share_xid = shareList ? shareList->xid : None;
419 gc->imported = GL_FALSE;
420
421 /* Unlike most X resource creation requests, we're about to return a handle
422 * with client-side state, not just an XID. To simplify error handling
423 * elsewhere in libGL, force a round-trip here to ensure the CreateContext
424 * request above succeeded.
425 */
426 {
427 Bool error = False;
428 int isDirect = __glXIsDirect(dpy, gc->xid, &error);
429
430 if (error != False || isDirect != gc->isDirect) {
431 gc->vtable->destroy(gc);
432 gc = NULL;
433 }
434 }
435
436 return (GLXContext) gc;
437 }
438
439 _GLX_PUBLIC GLXContext
glXCreateContext(Display * dpy,XVisualInfo * vis,GLXContext shareList,Bool allowDirect)440 glXCreateContext(Display * dpy, XVisualInfo * vis,
441 GLXContext shareList, Bool allowDirect)
442 {
443 struct glx_config *config = NULL;
444 int renderType = GLX_RGBA_TYPE;
445
446 #if defined(GLX_DIRECT_RENDERING) || defined(GLX_USE_APPLEGL)
447 struct glx_screen *const psc = GetGLXScreenConfigs(dpy, vis->screen);
448
449 if (psc)
450 config = glx_config_find_visual(psc->visuals, vis->visualid);
451
452 if (config == NULL) {
453 __glXSendError(dpy, BadValue, vis->visualid, X_GLXCreateContext, True);
454 return None;
455 }
456
457 /* Choose the context render type based on DRI config values. It is
458 * unusual to set this type from config, but we have no other choice, as
459 * this old API does not provide renderType parameter.
460 */
461 if (config->renderType & GLX_RGBA_FLOAT_BIT_ARB) {
462 renderType = GLX_RGBA_FLOAT_TYPE_ARB;
463 } else if (config->renderType & GLX_RGBA_UNSIGNED_FLOAT_BIT_EXT) {
464 renderType = GLX_RGBA_UNSIGNED_FLOAT_TYPE_EXT;
465 } else if (config->renderType & GLX_RGBA_BIT) {
466 renderType = GLX_RGBA_TYPE;
467 } else if (config->renderType & GLX_COLOR_INDEX_BIT) {
468 renderType = GLX_COLOR_INDEX_TYPE;
469 }
470 #endif
471
472 return CreateContext(dpy, vis->visualid, config, shareList, allowDirect,
473 X_GLXCreateContext, renderType, vis->screen);
474 }
475
476 static void
glx_send_destroy_context(Display * dpy,XID xid)477 glx_send_destroy_context(Display *dpy, XID xid)
478 {
479 CARD8 opcode = __glXSetupForCommand(dpy);
480 xGLXDestroyContextReq *req;
481
482 LockDisplay(dpy);
483 GetReq(GLXDestroyContext, req);
484 req->reqType = opcode;
485 req->glxCode = X_GLXDestroyContext;
486 req->context = xid;
487 UnlockDisplay(dpy);
488 SyncHandle();
489 }
490
491 /*
492 ** Destroy the named context
493 */
494
495 _GLX_PUBLIC void
glXDestroyContext(Display * dpy,GLXContext ctx)496 glXDestroyContext(Display * dpy, GLXContext ctx)
497 {
498 struct glx_context *gc = (struct glx_context *) ctx;
499
500 if (gc == NULL || gc->xid == None)
501 return;
502
503 __glXLock();
504 if (!gc->imported)
505 glx_send_destroy_context(dpy, gc->xid);
506
507 if (gc->currentDpy) {
508 /* This context is bound to some thread. According to the man page,
509 * we should not actually delete the context until it's unbound.
510 * Note that we set gc->xid = None above. In MakeContextCurrent()
511 * we check for that and delete the context there.
512 */
513 gc->xid = None;
514 } else {
515 gc->vtable->destroy(gc);
516 }
517 __glXUnlock();
518 }
519
520 /*
521 ** Return the major and minor version #s for the GLX extension
522 */
523 _GLX_PUBLIC Bool
glXQueryVersion(Display * dpy,int * major,int * minor)524 glXQueryVersion(Display * dpy, int *major, int *minor)
525 {
526 struct glx_display *priv;
527
528 /* Init the extension. This fetches the major and minor version. */
529 priv = __glXInitialize(dpy);
530 if (!priv)
531 return False;
532
533 if (major)
534 *major = GLX_MAJOR_VERSION;
535 if (minor)
536 *minor = priv->minorVersion;
537 return True;
538 }
539
540 /*
541 ** Query the existence of the GLX extension
542 */
543 _GLX_PUBLIC Bool
glXQueryExtension(Display * dpy,int * errorBase,int * eventBase)544 glXQueryExtension(Display * dpy, int *errorBase, int *eventBase)
545 {
546 int major_op, erb, evb;
547 Bool rv;
548
549 rv = XQueryExtension(dpy, GLX_EXTENSION_NAME, &major_op, &evb, &erb);
550 if (rv) {
551 if (errorBase)
552 *errorBase = erb;
553 if (eventBase)
554 *eventBase = evb;
555 }
556 return rv;
557 }
558
559 /*
560 ** Put a barrier in the token stream that forces the GL to finish its
561 ** work before X can proceed.
562 */
563 _GLX_PUBLIC void
glXWaitGL(void)564 glXWaitGL(void)
565 {
566 struct glx_context *gc = __glXGetCurrentContext();
567
568 if (gc->vtable->wait_gl)
569 gc->vtable->wait_gl(gc);
570 }
571
572 /*
573 ** Put a barrier in the token stream that forces X to finish its
574 ** work before GL can proceed.
575 */
576 _GLX_PUBLIC void
glXWaitX(void)577 glXWaitX(void)
578 {
579 struct glx_context *gc = __glXGetCurrentContext();
580
581 if (gc->vtable->wait_x)
582 gc->vtable->wait_x(gc);
583 }
584
585 _GLX_PUBLIC void
glXUseXFont(Font font,int first,int count,int listBase)586 glXUseXFont(Font font, int first, int count, int listBase)
587 {
588 struct glx_context *gc = __glXGetCurrentContext();
589 xGLXUseXFontReq *req;
590 Display *dpy = gc->currentDpy;
591
592 #ifdef GLX_DIRECT_RENDERING
593 if (gc->isDirect) {
594 DRI_glXUseXFont(gc, font, first, count, listBase);
595 return;
596 }
597 #endif
598
599 /* Flush any pending commands out */
600 __glXFlushRenderBuffer(gc, gc->pc);
601
602 /* Send the glXUseFont request */
603 LockDisplay(dpy);
604 GetReq(GLXUseXFont, req);
605 req->reqType = gc->majorOpcode;
606 req->glxCode = X_GLXUseXFont;
607 req->contextTag = gc->currentContextTag;
608 req->font = font;
609 req->first = first;
610 req->count = count;
611 req->listBase = listBase;
612 UnlockDisplay(dpy);
613 SyncHandle();
614 }
615
616 /************************************************************************/
617
618 /*
619 ** Copy the source context to the destination context using the
620 ** attribute "mask".
621 */
622 _GLX_PUBLIC void
glXCopyContext(Display * dpy,GLXContext source_user,GLXContext dest_user,unsigned long mask)623 glXCopyContext(Display * dpy, GLXContext source_user,
624 GLXContext dest_user, unsigned long mask)
625 {
626 struct glx_context *source = (struct glx_context *) source_user;
627 struct glx_context *dest = (struct glx_context *) dest_user;
628 #ifdef GLX_USE_APPLEGL
629 struct glx_context *gc = __glXGetCurrentContext();
630 int errorcode;
631 bool x11error;
632
633 if(apple_glx_copy_context(gc->driContext, source->driContext, dest->driContext,
634 mask, &errorcode, &x11error)) {
635 __glXSendError(dpy, errorcode, 0, X_GLXCopyContext, x11error);
636 }
637
638 #else
639 xGLXCopyContextReq *req;
640 struct glx_context *gc = __glXGetCurrentContext();
641 GLXContextTag tag;
642 CARD8 opcode;
643
644 opcode = __glXSetupForCommand(dpy);
645 if (!opcode) {
646 return;
647 }
648
649 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
650 if (gc->isDirect) {
651 /* NOT_DONE: This does not work yet */
652 }
653 #endif
654
655 /*
656 ** If the source is the current context, send its tag so that the context
657 ** can be flushed before the copy.
658 */
659 if (source == gc && dpy == gc->currentDpy) {
660 tag = gc->currentContextTag;
661 }
662 else {
663 tag = 0;
664 }
665
666 /* Send the glXCopyContext request */
667 LockDisplay(dpy);
668 GetReq(GLXCopyContext, req);
669 req->reqType = opcode;
670 req->glxCode = X_GLXCopyContext;
671 req->source = source ? source->xid : None;
672 req->dest = dest ? dest->xid : None;
673 req->mask = mask;
674 req->contextTag = tag;
675 UnlockDisplay(dpy);
676 SyncHandle();
677 #endif /* GLX_USE_APPLEGL */
678 }
679
680
681 _GLX_PUBLIC Bool
glXIsDirect(Display * dpy,GLXContext gc_user)682 glXIsDirect(Display * dpy, GLXContext gc_user)
683 {
684 struct glx_context *gc = (struct glx_context *) gc_user;
685
686 /* This is set for us at context creation */
687 return gc ? gc->isDirect : False;
688 }
689
690 _GLX_PUBLIC GLXPixmap
glXCreateGLXPixmap(Display * dpy,XVisualInfo * vis,Pixmap pixmap)691 glXCreateGLXPixmap(Display * dpy, XVisualInfo * vis, Pixmap pixmap)
692 {
693 #ifdef GLX_USE_APPLEGL
694 int screen = vis->screen;
695 struct glx_screen *const psc = GetGLXScreenConfigs(dpy, screen);
696 const struct glx_config *config;
697
698 config = glx_config_find_visual(psc->visuals, vis->visualid);
699
700 if(apple_glx_pixmap_create(dpy, vis->screen, pixmap, config))
701 return None;
702
703 return pixmap;
704 #else
705 xGLXCreateGLXPixmapReq *req;
706 struct glx_drawable *glxDraw;
707 GLXPixmap xid;
708 CARD8 opcode;
709
710 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
711 struct glx_display *const priv = __glXInitialize(dpy);
712
713 if (priv == NULL)
714 return None;
715 #endif
716
717 opcode = __glXSetupForCommand(dpy);
718 if (!opcode) {
719 return None;
720 }
721
722 glxDraw = malloc(sizeof(*glxDraw));
723 if (!glxDraw)
724 return None;
725
726 /* Send the glXCreateGLXPixmap request */
727 LockDisplay(dpy);
728 GetReq(GLXCreateGLXPixmap, req);
729 req->reqType = opcode;
730 req->glxCode = X_GLXCreateGLXPixmap;
731 req->screen = vis->screen;
732 req->visual = vis->visualid;
733 req->pixmap = pixmap;
734 req->glxpixmap = xid = XAllocID(dpy);
735 UnlockDisplay(dpy);
736 SyncHandle();
737
738 if (InitGLXDrawable(dpy, glxDraw, pixmap, req->glxpixmap)) {
739 free(glxDraw);
740 return None;
741 }
742
743 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
744 do {
745 /* FIXME: Maybe delay __DRIdrawable creation until the drawable
746 * is actually bound to a context... */
747
748 __GLXDRIdrawable *pdraw;
749 struct glx_screen *psc;
750 struct glx_config *config;
751
752 psc = priv->screens[vis->screen];
753 if (psc->driScreen == NULL)
754 return xid;
755
756 config = glx_config_find_visual(psc->visuals, vis->visualid);
757 pdraw = psc->driScreen->createDrawable(psc, pixmap, xid, config);
758 if (pdraw == NULL) {
759 fprintf(stderr, "failed to create pixmap\n");
760 xid = None;
761 break;
762 }
763
764 if (__glxHashInsert(priv->drawHash, xid, pdraw)) {
765 (*pdraw->destroyDrawable) (pdraw);
766 xid = None;
767 break;
768 }
769 } while (0);
770
771 if (xid == None) {
772 xGLXDestroyGLXPixmapReq *dreq;
773 LockDisplay(dpy);
774 GetReq(GLXDestroyGLXPixmap, dreq);
775 dreq->reqType = opcode;
776 dreq->glxCode = X_GLXDestroyGLXPixmap;
777 dreq->glxpixmap = xid;
778 UnlockDisplay(dpy);
779 SyncHandle();
780 }
781 #endif
782
783 return xid;
784 #endif
785 }
786
787 /*
788 ** Destroy the named pixmap
789 */
790 _GLX_PUBLIC void
glXDestroyGLXPixmap(Display * dpy,GLXPixmap glxpixmap)791 glXDestroyGLXPixmap(Display * dpy, GLXPixmap glxpixmap)
792 {
793 #ifdef GLX_USE_APPLEGL
794 if(apple_glx_pixmap_destroy(dpy, glxpixmap))
795 __glXSendError(dpy, GLXBadPixmap, glxpixmap, X_GLXDestroyPixmap, false);
796 #else
797 xGLXDestroyGLXPixmapReq *req;
798 CARD8 opcode;
799
800 opcode = __glXSetupForCommand(dpy);
801 if (!opcode) {
802 return;
803 }
804
805 /* Send the glXDestroyGLXPixmap request */
806 LockDisplay(dpy);
807 GetReq(GLXDestroyGLXPixmap, req);
808 req->reqType = opcode;
809 req->glxCode = X_GLXDestroyGLXPixmap;
810 req->glxpixmap = glxpixmap;
811 UnlockDisplay(dpy);
812 SyncHandle();
813
814 DestroyGLXDrawable(dpy, glxpixmap);
815
816 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
817 {
818 struct glx_display *const priv = __glXInitialize(dpy);
819 __GLXDRIdrawable *pdraw = GetGLXDRIDrawable(dpy, glxpixmap);
820
821 if (priv != NULL && pdraw != NULL) {
822 (*pdraw->destroyDrawable) (pdraw);
823 __glxHashDelete(priv->drawHash, glxpixmap);
824 }
825 }
826 #endif
827 #endif /* GLX_USE_APPLEGL */
828 }
829
830 _GLX_PUBLIC void
glXSwapBuffers(Display * dpy,GLXDrawable drawable)831 glXSwapBuffers(Display * dpy, GLXDrawable drawable)
832 {
833 #ifdef GLX_USE_APPLEGL
834 struct glx_context * gc = __glXGetCurrentContext();
835 if(gc != &dummyContext && apple_glx_is_current_drawable(dpy, gc->driContext, drawable)) {
836 apple_glx_swap_buffers(gc->driContext);
837 } else {
838 __glXSendError(dpy, GLXBadCurrentWindow, 0, X_GLXSwapBuffers, false);
839 }
840 #else
841 struct glx_context *gc;
842 GLXContextTag tag;
843 CARD8 opcode;
844 xcb_connection_t *c;
845
846 gc = __glXGetCurrentContext();
847
848 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
849 {
850 __GLXDRIdrawable *pdraw = GetGLXDRIDrawable(dpy, drawable);
851
852 if (pdraw != NULL) {
853 Bool flush = gc != &dummyContext && drawable == gc->currentDrawable;
854
855 pdraw->psc->driScreen->swapBuffers(pdraw, 0, 0, 0, flush);
856 return;
857 }
858 }
859 #endif
860
861 opcode = __glXSetupForCommand(dpy);
862 if (!opcode) {
863 return;
864 }
865
866 /*
867 ** The calling thread may or may not have a current context. If it
868 ** does, send the context tag so the server can do a flush.
869 */
870 if ((gc != &dummyContext) && (dpy == gc->currentDpy) &&
871 ((drawable == gc->currentDrawable)
872 || (drawable == gc->currentReadable))) {
873 tag = gc->currentContextTag;
874 }
875 else {
876 tag = 0;
877 }
878
879 c = XGetXCBConnection(dpy);
880 xcb_glx_swap_buffers(c, tag, drawable);
881 xcb_flush(c);
882 #endif /* GLX_USE_APPLEGL */
883 }
884
885
886 /*
887 ** Return configuration information for the given display, screen and
888 ** visual combination.
889 */
890 _GLX_PUBLIC int
glXGetConfig(Display * dpy,XVisualInfo * vis,int attribute,int * value_return)891 glXGetConfig(Display * dpy, XVisualInfo * vis, int attribute,
892 int *value_return)
893 {
894 struct glx_display *priv;
895 struct glx_screen *psc;
896 struct glx_config *config;
897 int status;
898
899 status = GetGLXPrivScreenConfig(dpy, vis->screen, &priv, &psc);
900 if (status == Success) {
901 config = glx_config_find_visual(psc->visuals, vis->visualid);
902
903 /* Lookup attribute after first finding a match on the visual */
904 if (config != NULL) {
905 return glx_config_get(config, attribute, value_return);
906 }
907
908 status = GLX_BAD_VISUAL;
909 }
910
911 /*
912 ** If we can't find the config for this visual, this visual is not
913 ** supported by the OpenGL implementation on the server.
914 */
915 if ((status == GLX_BAD_VISUAL) && (attribute == GLX_USE_GL)) {
916 *value_return = False;
917 status = Success;
918 }
919
920 return status;
921 }
922
923 /************************************************************************/
924
925 static void
init_fbconfig_for_chooser(struct glx_config * config,GLboolean fbconfig_style_tags)926 init_fbconfig_for_chooser(struct glx_config * config,
927 GLboolean fbconfig_style_tags)
928 {
929 memset(config, 0, sizeof(struct glx_config));
930 config->visualID = (XID) GLX_DONT_CARE;
931 config->visualType = GLX_DONT_CARE;
932
933 /* glXChooseFBConfig specifies different defaults for these properties than
934 * glXChooseVisual.
935 */
936 if (fbconfig_style_tags) {
937 config->doubleBufferMode = GLX_DONT_CARE;
938 config->renderType = GLX_RGBA_BIT;
939 }
940
941 config->drawableType = GLX_WINDOW_BIT;
942 config->visualRating = GLX_DONT_CARE;
943 config->transparentPixel = GLX_NONE;
944 config->transparentRed = GLX_DONT_CARE;
945 config->transparentGreen = GLX_DONT_CARE;
946 config->transparentBlue = GLX_DONT_CARE;
947 config->transparentAlpha = GLX_DONT_CARE;
948 config->transparentIndex = GLX_DONT_CARE;
949
950 config->xRenderable = GLX_DONT_CARE;
951 config->fbconfigID = (GLXFBConfigID) (GLX_DONT_CARE);
952
953 config->swapMethod = GLX_DONT_CARE;
954 config->sRGBCapable = GLX_DONT_CARE;
955 }
956
957 #define MATCH_DONT_CARE( param ) \
958 do { \
959 if ( ((int) a-> param != (int) GLX_DONT_CARE) \
960 && (a-> param != b-> param) ) { \
961 return False; \
962 } \
963 } while ( 0 )
964
965 #define MATCH_MINIMUM( param ) \
966 do { \
967 if ( ((int) a-> param != (int) GLX_DONT_CARE) \
968 && (a-> param > b-> param) ) { \
969 return False; \
970 } \
971 } while ( 0 )
972
973 #define MATCH_EXACT( param ) \
974 do { \
975 if ( a-> param != b-> param) { \
976 return False; \
977 } \
978 } while ( 0 )
979
980 /* Test that all bits from a are contained in b */
981 #define MATCH_MASK(param) \
982 do { \
983 if ( ((int) a-> param != (int) GLX_DONT_CARE) \
984 && ((a->param & ~b->param) != 0) ) { \
985 return False; \
986 } \
987 } while (0);
988
989 /**
990 * Determine if two GLXFBConfigs are compatible.
991 *
992 * \param a Application specified config to test.
993 * \param b Server specified config to test against \c a.
994 */
995 static Bool
fbconfigs_compatible(const struct glx_config * const a,const struct glx_config * const b)996 fbconfigs_compatible(const struct glx_config * const a,
997 const struct glx_config * const b)
998 {
999 MATCH_DONT_CARE(doubleBufferMode);
1000 MATCH_DONT_CARE(visualType);
1001 MATCH_DONT_CARE(visualRating);
1002 MATCH_DONT_CARE(xRenderable);
1003 MATCH_DONT_CARE(fbconfigID);
1004 MATCH_DONT_CARE(swapMethod);
1005
1006 MATCH_MINIMUM(rgbBits);
1007 MATCH_MINIMUM(numAuxBuffers);
1008 MATCH_MINIMUM(redBits);
1009 MATCH_MINIMUM(greenBits);
1010 MATCH_MINIMUM(blueBits);
1011 MATCH_MINIMUM(alphaBits);
1012 MATCH_MINIMUM(depthBits);
1013 MATCH_MINIMUM(stencilBits);
1014 MATCH_MINIMUM(accumRedBits);
1015 MATCH_MINIMUM(accumGreenBits);
1016 MATCH_MINIMUM(accumBlueBits);
1017 MATCH_MINIMUM(accumAlphaBits);
1018 MATCH_MINIMUM(sampleBuffers);
1019 MATCH_MINIMUM(maxPbufferWidth);
1020 MATCH_MINIMUM(maxPbufferHeight);
1021 MATCH_MINIMUM(maxPbufferPixels);
1022 MATCH_MINIMUM(samples);
1023
1024 MATCH_DONT_CARE(stereoMode);
1025 MATCH_EXACT(level);
1026
1027 MATCH_MASK(drawableType);
1028 MATCH_MASK(renderType);
1029 MATCH_DONT_CARE(sRGBCapable);
1030
1031 /* There is a bug in a few of the XFree86 DDX drivers. They contain
1032 * visuals with a "transparent type" of 0 when they really mean GLX_NONE.
1033 * Technically speaking, it is a bug in the DDX driver, but there is
1034 * enough of an installed base to work around the problem here. In any
1035 * case, 0 is not a valid value of the transparent type, so we'll treat 0
1036 * from the app as GLX_DONT_CARE. We'll consider GLX_NONE from the app and
1037 * 0 from the server to be a match to maintain backward compatibility with
1038 * the (broken) drivers.
1039 */
1040
1041 if (a->transparentPixel != (int) GLX_DONT_CARE && a->transparentPixel != 0) {
1042 if (a->transparentPixel == GLX_NONE) {
1043 if (b->transparentPixel != GLX_NONE && b->transparentPixel != 0)
1044 return False;
1045 }
1046 else {
1047 MATCH_EXACT(transparentPixel);
1048 }
1049
1050 switch (a->transparentPixel) {
1051 case GLX_TRANSPARENT_RGB:
1052 MATCH_DONT_CARE(transparentRed);
1053 MATCH_DONT_CARE(transparentGreen);
1054 MATCH_DONT_CARE(transparentBlue);
1055 MATCH_DONT_CARE(transparentAlpha);
1056 break;
1057
1058 case GLX_TRANSPARENT_INDEX:
1059 MATCH_DONT_CARE(transparentIndex);
1060 break;
1061
1062 default:
1063 break;
1064 }
1065 }
1066
1067 return True;
1068 }
1069
1070
1071 /* There's some trickly language in the GLX spec about how this is supposed
1072 * to work. Basically, if a given component size is either not specified
1073 * or the requested size is zero, it is supposed to act like PERFER_SMALLER.
1074 * Well, that's really hard to do with the code as-is. This behavior is
1075 * closer to correct, but still not technically right.
1076 */
1077 #define PREFER_LARGER_OR_ZERO(comp) \
1078 do { \
1079 if ( ((*a)-> comp) != ((*b)-> comp) ) { \
1080 if ( ((*a)-> comp) == 0 ) { \
1081 return -1; \
1082 } \
1083 else if ( ((*b)-> comp) == 0 ) { \
1084 return 1; \
1085 } \
1086 else { \
1087 return ((*b)-> comp) - ((*a)-> comp) ; \
1088 } \
1089 } \
1090 } while( 0 )
1091
1092 #define PREFER_LARGER(comp) \
1093 do { \
1094 if ( ((*a)-> comp) != ((*b)-> comp) ) { \
1095 return ((*b)-> comp) - ((*a)-> comp) ; \
1096 } \
1097 } while( 0 )
1098
1099 #define PREFER_SMALLER(comp) \
1100 do { \
1101 if ( ((*a)-> comp) != ((*b)-> comp) ) { \
1102 return ((*a)-> comp) - ((*b)-> comp) ; \
1103 } \
1104 } while( 0 )
1105
1106 /**
1107 * Compare two GLXFBConfigs. This function is intended to be used as the
1108 * compare function passed in to qsort.
1109 *
1110 * \returns If \c a is a "better" config, according to the specification of
1111 * SGIX_fbconfig, a number less than zero is returned. If \c b is
1112 * better, then a number greater than zero is return. If both are
1113 * equal, zero is returned.
1114 * \sa qsort, glXChooseVisual, glXChooseFBConfig, glXChooseFBConfigSGIX
1115 */
1116 static int
fbconfig_compare(struct glx_config ** a,struct glx_config ** b)1117 fbconfig_compare(struct glx_config **a, struct glx_config **b)
1118 {
1119 /* The order of these comparisons must NOT change. It is defined by
1120 * the GLX 1.4 specification.
1121 */
1122
1123 PREFER_SMALLER(visualSelectGroup);
1124
1125 /* The sort order for the visualRating is GLX_NONE, GLX_SLOW, and
1126 * GLX_NON_CONFORMANT_CONFIG. It just so happens that this is the
1127 * numerical sort order of the enums (0x8000, 0x8001, and 0x800D).
1128 */
1129 PREFER_SMALLER(visualRating);
1130
1131 /* This isn't quite right. It is supposed to compare the sum of the
1132 * components the user specifically set minimums for.
1133 */
1134 PREFER_LARGER_OR_ZERO(redBits);
1135 PREFER_LARGER_OR_ZERO(greenBits);
1136 PREFER_LARGER_OR_ZERO(blueBits);
1137 PREFER_LARGER_OR_ZERO(alphaBits);
1138
1139 PREFER_SMALLER(rgbBits);
1140
1141 if (((*a)->doubleBufferMode != (*b)->doubleBufferMode)) {
1142 /* Prefer single-buffer.
1143 */
1144 return (!(*a)->doubleBufferMode) ? -1 : 1;
1145 }
1146
1147 PREFER_SMALLER(numAuxBuffers);
1148
1149 PREFER_SMALLER(sampleBuffers);
1150 PREFER_SMALLER(samples);
1151
1152 PREFER_LARGER_OR_ZERO(depthBits);
1153 PREFER_SMALLER(stencilBits);
1154
1155 /* This isn't quite right. It is supposed to compare the sum of the
1156 * components the user specifically set minimums for.
1157 */
1158 PREFER_LARGER_OR_ZERO(accumRedBits);
1159 PREFER_LARGER_OR_ZERO(accumGreenBits);
1160 PREFER_LARGER_OR_ZERO(accumBlueBits);
1161 PREFER_LARGER_OR_ZERO(accumAlphaBits);
1162
1163 PREFER_SMALLER(visualType);
1164
1165 /* None of the pbuffer or fbconfig specs say that this comparison needs
1166 * to happen at all, but it seems like it should.
1167 */
1168 PREFER_LARGER(maxPbufferWidth);
1169 PREFER_LARGER(maxPbufferHeight);
1170 PREFER_LARGER(maxPbufferPixels);
1171
1172 return 0;
1173 }
1174
1175
1176 /**
1177 * Selects and sorts a subset of the supplied configs based on the attributes.
1178 * This function forms to basis of \c glXChooseFBConfig and
1179 * \c glXChooseFBConfigSGIX.
1180 *
1181 * \param configs Array of pointers to possible configs. The elements of
1182 * this array that do not meet the criteria will be set to
1183 * NULL. The remaining elements will be sorted according to
1184 * the various visual / FBConfig selection rules.
1185 * \param num_configs Number of elements in the \c configs array.
1186 * \param attribList Attributes used select from \c configs. This array is
1187 * terminated by a \c None tag. The array is of the form
1188 * expected by \c glXChooseFBConfig (where every tag has a
1189 * value).
1190 * \returns The number of valid elements left in \c configs.
1191 *
1192 * \sa glXChooseFBConfig, glXChooseFBConfigSGIX
1193 */
1194 static int
choose_fbconfig(struct glx_config ** configs,int num_configs,const int * attribList)1195 choose_fbconfig(struct glx_config ** configs, int num_configs,
1196 const int *attribList)
1197 {
1198 struct glx_config test_config;
1199 int base;
1200 int i;
1201
1202 /* This is a fairly direct implementation of the selection method
1203 * described by GLX_SGIX_fbconfig. Start by culling out all the
1204 * configs that are not compatible with the selected parameter
1205 * list.
1206 */
1207
1208 init_fbconfig_for_chooser(&test_config, GL_TRUE);
1209 __glXInitializeVisualConfigFromTags(&test_config, 512,
1210 (const INT32 *) attribList,
1211 GL_TRUE, GL_TRUE);
1212
1213 base = 0;
1214 for (i = 0; i < num_configs; i++) {
1215 if (fbconfigs_compatible(&test_config, configs[i])) {
1216 configs[base] = configs[i];
1217 base++;
1218 }
1219 }
1220
1221 if (base == 0) {
1222 return 0;
1223 }
1224
1225 if (base < num_configs) {
1226 (void) memset(&configs[base], 0, sizeof(void *) * (num_configs - base));
1227 }
1228
1229 /* After the incompatible configs are removed, the resulting
1230 * list is sorted according to the rules set out in the various
1231 * specifications.
1232 */
1233
1234 qsort(configs, base, sizeof(struct glx_config *),
1235 (int (*)(const void *, const void *)) fbconfig_compare);
1236 return base;
1237 }
1238
1239
1240
1241
1242 /*
1243 ** Return the visual that best matches the template. Return None if no
1244 ** visual matches the template.
1245 */
1246 _GLX_PUBLIC XVisualInfo *
glXChooseVisual(Display * dpy,int screen,int * attribList)1247 glXChooseVisual(Display * dpy, int screen, int *attribList)
1248 {
1249 XVisualInfo *visualList = NULL;
1250 struct glx_display *priv;
1251 struct glx_screen *psc;
1252 struct glx_config test_config;
1253 struct glx_config *config;
1254 struct glx_config *best_config = NULL;
1255
1256 /*
1257 ** Get a list of all visuals, return if list is empty
1258 */
1259 if (GetGLXPrivScreenConfig(dpy, screen, &priv, &psc) != Success) {
1260 return None;
1261 }
1262
1263
1264 /*
1265 ** Build a template from the defaults and the attribute list
1266 ** Free visual list and return if an unexpected token is encountered
1267 */
1268 init_fbconfig_for_chooser(&test_config, GL_FALSE);
1269 __glXInitializeVisualConfigFromTags(&test_config, 512,
1270 (const INT32 *) attribList,
1271 GL_TRUE, GL_FALSE);
1272
1273 /*
1274 ** Eliminate visuals that don't meet minimum requirements
1275 ** Compute a score for those that do
1276 ** Remember which visual, if any, got the highest score
1277 ** If no visual is acceptable, return None
1278 ** Otherwise, create an XVisualInfo list with just the selected X visual
1279 ** and return this.
1280 */
1281 for (config = psc->visuals; config != NULL; config = config->next) {
1282 if (fbconfigs_compatible(&test_config, config)
1283 && ((best_config == NULL) ||
1284 (fbconfig_compare (&config, &best_config) < 0))) {
1285 XVisualInfo visualTemplate;
1286 XVisualInfo *newList;
1287 int i;
1288
1289 visualTemplate.screen = screen;
1290 visualTemplate.visualid = config->visualID;
1291 newList = XGetVisualInfo(dpy, VisualScreenMask | VisualIDMask,
1292 &visualTemplate, &i);
1293
1294 if (newList) {
1295 free(visualList);
1296 visualList = newList;
1297 best_config = config;
1298 }
1299 }
1300 }
1301
1302 #ifdef GLX_USE_APPLEGL
1303 if(visualList && env_var_as_boolean("LIBGL_DUMP_VISUALID", false)) {
1304 printf("visualid 0x%lx\n", visualList[0].visualid);
1305 }
1306 #endif
1307
1308 return visualList;
1309 }
1310
1311
1312 _GLX_PUBLIC const char *
glXQueryExtensionsString(Display * dpy,int screen)1313 glXQueryExtensionsString(Display * dpy, int screen)
1314 {
1315 struct glx_screen *psc;
1316 struct glx_display *priv;
1317 int is_direct_capable = GL_FALSE;
1318
1319 if (GetGLXPrivScreenConfig(dpy, screen, &priv, &psc) != Success) {
1320 return NULL;
1321 }
1322
1323 if (!psc->effectiveGLXexts) {
1324 if (!psc->serverGLXexts) {
1325 psc->serverGLXexts =
1326 __glXQueryServerString(dpy, screen, GLX_EXTENSIONS);
1327 }
1328
1329 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
1330 is_direct_capable = (psc->driScreen != NULL);
1331 #endif
1332 __glXCalculateUsableExtensions(psc, is_direct_capable);
1333 }
1334
1335 return psc->effectiveGLXexts;
1336 }
1337
1338 _GLX_PUBLIC const char *
glXGetClientString(Display * dpy,int name)1339 glXGetClientString(Display * dpy, int name)
1340 {
1341 (void) dpy;
1342
1343 switch (name) {
1344 case GLX_VENDOR:
1345 return (__glXGLXClientVendorName);
1346 case GLX_VERSION:
1347 return (__glXGLXClientVersion);
1348 case GLX_EXTENSIONS:
1349 return (__glXGetClientExtensions(dpy));
1350 default:
1351 return NULL;
1352 }
1353 }
1354
1355 _GLX_PUBLIC const char *
glXQueryServerString(Display * dpy,int screen,int name)1356 glXQueryServerString(Display * dpy, int screen, int name)
1357 {
1358 struct glx_screen *psc;
1359 struct glx_display *priv;
1360 const char **str;
1361
1362 if (GetGLXPrivScreenConfig(dpy, screen, &priv, &psc) != Success) {
1363 return NULL;
1364 }
1365
1366 switch (name) {
1367 case GLX_VENDOR:
1368 str = &psc->serverGLXvendor;
1369 break;
1370 case GLX_VERSION:
1371 str = &psc->serverGLXversion;
1372 break;
1373 case GLX_EXTENSIONS:
1374 str = &psc->serverGLXexts;
1375 break;
1376 default:
1377 return NULL;
1378 }
1379
1380 if (*str == NULL) {
1381 *str = __glXQueryServerString(dpy, screen, name);
1382 }
1383
1384 return *str;
1385 }
1386
1387
1388 /*
1389 ** EXT_import_context
1390 */
1391
1392 _GLX_PUBLIC Display *
glXGetCurrentDisplay(void)1393 glXGetCurrentDisplay(void)
1394 {
1395 struct glx_context *gc = __glXGetCurrentContext();
1396 if (gc == &dummyContext)
1397 return NULL;
1398 return gc->currentDpy;
1399 }
1400
1401 _GLX_PUBLIC
1402 GLX_ALIAS(Display *, glXGetCurrentDisplayEXT, (void), (),
1403 glXGetCurrentDisplay)
1404
1405 #ifndef GLX_USE_APPLEGL
1406 _GLX_PUBLIC GLXContext
glXImportContextEXT(Display * dpy,GLXContextID contextID)1407 glXImportContextEXT(Display *dpy, GLXContextID contextID)
1408 {
1409 struct glx_display *priv = __glXInitialize(dpy);
1410 struct glx_screen *psc = NULL;
1411 xGLXQueryContextReply reply;
1412 CARD8 opcode;
1413 struct glx_context *ctx;
1414 int i, renderType = GLX_RGBA_TYPE; /* By default, assume RGBA context */
1415 XID share = None;
1416 struct glx_config *mode = NULL;
1417 uint32_t fbconfigID = 0;
1418 uint32_t visualID = 0;
1419 uint32_t screen = 0;
1420 Bool got_screen = False;
1421
1422 if (priv == NULL)
1423 return NULL;
1424
1425 /* The GLX_EXT_import_context spec says:
1426 *
1427 * "If <contextID> does not refer to a valid context, then a BadContext
1428 * error is generated; if <contextID> refers to direct rendering
1429 * context then no error is generated but glXImportContextEXT returns
1430 * NULL."
1431 *
1432 * We can handle both conditions with the __glXIsDirect call, because
1433 * passing None to a GLXIsDirect request will throw GLXBadContext.
1434 */
1435 if (__glXIsDirect(dpy, contextID, NULL))
1436 return NULL;
1437
1438 opcode = __glXSetupForCommand(dpy);
1439 if (!opcode)
1440 return 0;
1441
1442 /* Send the glXQueryContextInfoEXT request */
1443 LockDisplay(dpy);
1444
1445 if (priv->minorVersion >= 3) {
1446 xGLXQueryContextReq *req;
1447
1448 GetReq(GLXQueryContext, req);
1449
1450 req->reqType = opcode;
1451 req->glxCode = X_GLXQueryContext;
1452 req->context = contextID;
1453 }
1454 else {
1455 xGLXVendorPrivateReq *vpreq;
1456 xGLXQueryContextInfoEXTReq *req;
1457
1458 GetReqExtra(GLXVendorPrivate,
1459 sz_xGLXQueryContextInfoEXTReq - sz_xGLXVendorPrivateReq,
1460 vpreq);
1461 req = (xGLXQueryContextInfoEXTReq *) vpreq;
1462 req->reqType = opcode;
1463 req->glxCode = X_GLXVendorPrivateWithReply;
1464 req->vendorCode = X_GLXvop_QueryContextInfoEXT;
1465 req->context = contextID;
1466 }
1467
1468 if (_XReply(dpy, (xReply *) & reply, 0, False) &&
1469 reply.n < (INT32_MAX / 2)) {
1470
1471 for (i = 0; i < reply.n; i++) {
1472 int prop[2];
1473
1474 _XRead(dpy, (char *)prop, sizeof(prop));
1475 switch (prop[0]) {
1476 case GLX_SCREEN:
1477 screen = prop[1];
1478 got_screen = True;
1479 break;
1480 case GLX_SHARE_CONTEXT_EXT:
1481 share = prop[1];
1482 break;
1483 case GLX_VISUAL_ID_EXT:
1484 visualID = prop[1];
1485 break;
1486 case GLX_FBCONFIG_ID:
1487 fbconfigID = prop[1];
1488 break;
1489 case GLX_RENDER_TYPE:
1490 renderType = prop[1];
1491 break;
1492 }
1493 }
1494 }
1495 UnlockDisplay(dpy);
1496 SyncHandle();
1497
1498 if (!got_screen)
1499 return NULL;
1500
1501 psc = GetGLXScreenConfigs(dpy, screen);
1502 if (psc == NULL)
1503 return NULL;
1504
1505 if (fbconfigID != 0) {
1506 mode = glx_config_find_fbconfig(psc->configs, fbconfigID);
1507 } else if (visualID != 0) {
1508 mode = glx_config_find_visual(psc->visuals, visualID);
1509 }
1510
1511 if (mode == NULL)
1512 return NULL;
1513
1514 ctx = indirect_create_context(psc, mode, NULL, renderType);
1515 if (ctx == NULL)
1516 return NULL;
1517
1518 ctx->xid = contextID;
1519 ctx->imported = GL_TRUE;
1520 ctx->share_xid = share;
1521
1522 return (GLXContext) ctx;
1523 }
1524
1525 #endif
1526
1527 _GLX_PUBLIC int
glXQueryContext(Display * dpy,GLXContext ctx_user,int attribute,int * value)1528 glXQueryContext(Display * dpy, GLXContext ctx_user, int attribute, int *value)
1529 {
1530 struct glx_context *ctx = (struct glx_context *) ctx_user;
1531
1532 switch (attribute) {
1533 case GLX_SHARE_CONTEXT_EXT:
1534 *value = ctx->share_xid;
1535 break;
1536 case GLX_VISUAL_ID_EXT:
1537 *value = ctx->config ? ctx->config->visualID : None;
1538 break;
1539 case GLX_SCREEN:
1540 *value = ctx->screen;
1541 break;
1542 case GLX_FBCONFIG_ID:
1543 *value = ctx->config ? ctx->config->fbconfigID : None;
1544 break;
1545 case GLX_RENDER_TYPE:
1546 *value = ctx->renderType;
1547 break;
1548 default:
1549 return GLX_BAD_ATTRIBUTE;
1550 }
1551 return Success;
1552 }
1553
1554 _GLX_PUBLIC
1555 GLX_ALIAS(int, glXQueryContextInfoEXT,
1556 (Display * dpy, GLXContext ctx, int attribute, int *value),
1557 (dpy, ctx, attribute, value), glXQueryContext)
1558
glXGetContextIDEXT(const GLXContext ctx_user)1559 _GLX_PUBLIC GLXContextID glXGetContextIDEXT(const GLXContext ctx_user)
1560 {
1561 struct glx_context *ctx = (struct glx_context *) ctx_user;
1562
1563 return (ctx == NULL) ? None : ctx->xid;
1564 }
1565
1566 _GLX_PUBLIC void
glXFreeContextEXT(Display * dpy,GLXContext ctx)1567 glXFreeContextEXT(Display *dpy, GLXContext ctx)
1568 {
1569 struct glx_context *gc = (struct glx_context *) ctx;
1570
1571 if (gc == NULL || gc->xid == None)
1572 return;
1573
1574 /* The GLX_EXT_import_context spec says:
1575 *
1576 * "glXFreeContext does not free the server-side context information or
1577 * the XID associated with the server-side context."
1578 *
1579 * Don't send any protocol. Just destroy the client-side tracking of the
1580 * context. Also, only release the context structure if it's not current.
1581 */
1582 __glXLock();
1583 if (gc->currentDpy) {
1584 gc->xid = None;
1585 } else {
1586 gc->vtable->destroy(gc);
1587 }
1588 __glXUnlock();
1589 }
1590
1591 _GLX_PUBLIC GLXFBConfig *
glXChooseFBConfig(Display * dpy,int screen,const int * attribList,int * nitems)1592 glXChooseFBConfig(Display * dpy, int screen,
1593 const int *attribList, int *nitems)
1594 {
1595 struct glx_config **config_list;
1596 int list_size;
1597
1598
1599 config_list = (struct glx_config **)
1600 glXGetFBConfigs(dpy, screen, &list_size);
1601
1602 if ((config_list != NULL) && (list_size > 0) && (attribList != NULL)) {
1603 list_size = choose_fbconfig(config_list, list_size, attribList);
1604 if (list_size == 0) {
1605 free(config_list);
1606 config_list = NULL;
1607 }
1608 }
1609
1610 *nitems = list_size;
1611 return (GLXFBConfig *) config_list;
1612 }
1613
1614
1615 _GLX_PUBLIC GLXContext
glXCreateNewContext(Display * dpy,GLXFBConfig fbconfig,int renderType,GLXContext shareList,Bool allowDirect)1616 glXCreateNewContext(Display * dpy, GLXFBConfig fbconfig,
1617 int renderType, GLXContext shareList, Bool allowDirect)
1618 {
1619 struct glx_config *config = (struct glx_config *) fbconfig;
1620 struct glx_config **config_list;
1621 int list_size;
1622 unsigned i;
1623
1624 if (!config) {
1625 __glXSendError(dpy, GLXBadFBConfig, 0, X_GLXCreateNewContext, false);
1626 return NULL;
1627 }
1628
1629 config_list = (struct glx_config **)
1630 glXGetFBConfigs(dpy, config->screen, &list_size);
1631
1632 for (i = 0; i < list_size; i++) {
1633 if (config_list[i] == config)
1634 break;
1635 }
1636 free(config_list);
1637
1638 if (i == list_size) {
1639 __glXSendError(dpy, GLXBadFBConfig, 0, X_GLXCreateNewContext, false);
1640 return NULL;
1641 }
1642
1643 return CreateContext(dpy, config->fbconfigID, config, shareList,
1644 allowDirect, X_GLXCreateNewContext, renderType,
1645 config->screen);
1646 }
1647
1648
1649 _GLX_PUBLIC GLXDrawable
glXGetCurrentReadDrawable(void)1650 glXGetCurrentReadDrawable(void)
1651 {
1652 struct glx_context *gc = __glXGetCurrentContext();
1653
1654 return gc->currentReadable;
1655 }
1656
1657
1658 _GLX_PUBLIC GLXFBConfig *
glXGetFBConfigs(Display * dpy,int screen,int * nelements)1659 glXGetFBConfigs(Display * dpy, int screen, int *nelements)
1660 {
1661 struct glx_display *priv = __glXInitialize(dpy);
1662 struct glx_config **config_list = NULL;
1663 struct glx_config *config;
1664 unsigned num_configs = 0;
1665 int i;
1666
1667 *nelements = 0;
1668 if (priv && (priv->screens != NULL)
1669 && (screen >= 0) && (screen < ScreenCount(dpy))
1670 && (priv->screens[screen]->configs != NULL)
1671 && (priv->screens[screen]->configs->fbconfigID
1672 != (int) GLX_DONT_CARE)) {
1673
1674 for (config = priv->screens[screen]->configs; config != NULL;
1675 config = config->next) {
1676 if (config->fbconfigID != (int) GLX_DONT_CARE) {
1677 num_configs++;
1678 }
1679 }
1680
1681 config_list = malloc(num_configs * sizeof *config_list);
1682 if (config_list != NULL) {
1683 *nelements = num_configs;
1684 i = 0;
1685 for (config = priv->screens[screen]->configs; config != NULL;
1686 config = config->next) {
1687 if (config->fbconfigID != (int) GLX_DONT_CARE) {
1688 config_list[i] = config;
1689 i++;
1690 }
1691 }
1692 }
1693 }
1694
1695 return (GLXFBConfig *) config_list;
1696 }
1697
1698
1699 _GLX_PUBLIC int
glXGetFBConfigAttrib(Display * dpy,GLXFBConfig fbconfig,int attribute,int * value)1700 glXGetFBConfigAttrib(Display * dpy, GLXFBConfig fbconfig,
1701 int attribute, int *value)
1702 {
1703 struct glx_config *config = ValidateGLXFBConfig(dpy, fbconfig);
1704
1705 if (config == NULL)
1706 return GLXBadFBConfig;
1707
1708 return glx_config_get(config, attribute, value);
1709 }
1710
1711
1712 _GLX_PUBLIC XVisualInfo *
glXGetVisualFromFBConfig(Display * dpy,GLXFBConfig fbconfig)1713 glXGetVisualFromFBConfig(Display * dpy, GLXFBConfig fbconfig)
1714 {
1715 XVisualInfo visualTemplate;
1716 struct glx_config *config = (struct glx_config *) fbconfig;
1717 int count;
1718
1719 if (!config)
1720 return NULL;
1721
1722 /*
1723 ** Get a list of all visuals, return if list is empty
1724 */
1725 visualTemplate.visualid = config->visualID;
1726 return XGetVisualInfo(dpy, VisualIDMask, &visualTemplate, &count);
1727 }
1728
1729 #ifndef GLX_USE_APPLEGL
1730 /*
1731 ** GLX_SGI_swap_control
1732 */
1733 _X_HIDDEN int
glXSwapIntervalSGI(int interval)1734 glXSwapIntervalSGI(int interval)
1735 {
1736 xGLXVendorPrivateReq *req;
1737 struct glx_context *gc = __glXGetCurrentContext();
1738 #ifdef GLX_DIRECT_RENDERING
1739 struct glx_screen *psc = gc->psc;
1740 #endif
1741 Display *dpy;
1742 CARD32 *interval_ptr;
1743 CARD8 opcode;
1744
1745 if (gc == &dummyContext) {
1746 return GLX_BAD_CONTEXT;
1747 }
1748
1749 if (interval <= 0) {
1750 return GLX_BAD_VALUE;
1751 }
1752
1753 #ifdef GLX_DIRECT_RENDERING
1754 if (gc->isDirect && psc && psc->driScreen &&
1755 psc->driScreen->setSwapInterval) {
1756 __GLXDRIdrawable *pdraw =
1757 GetGLXDRIDrawable(gc->currentDpy, gc->currentDrawable);
1758 /* Simply ignore the command if the GLX drawable has been destroyed but
1759 * the context is still bound.
1760 */
1761 if (pdraw)
1762 psc->driScreen->setSwapInterval(pdraw, interval);
1763 return 0;
1764 }
1765 #endif
1766
1767 dpy = gc->currentDpy;
1768 opcode = __glXSetupForCommand(dpy);
1769 if (!opcode) {
1770 return 0;
1771 }
1772
1773 /* Send the glXSwapIntervalSGI request */
1774 LockDisplay(dpy);
1775 GetReqExtra(GLXVendorPrivate, sizeof(CARD32), req);
1776 req->reqType = opcode;
1777 req->glxCode = X_GLXVendorPrivate;
1778 req->vendorCode = X_GLXvop_SwapIntervalSGI;
1779 req->contextTag = gc->currentContextTag;
1780
1781 interval_ptr = (CARD32 *) (req + 1);
1782 *interval_ptr = interval;
1783
1784 UnlockDisplay(dpy);
1785 SyncHandle();
1786 XFlush(dpy);
1787
1788 return 0;
1789 }
1790
1791
1792 /*
1793 ** GLX_MESA_swap_control
1794 */
1795 _X_HIDDEN int
glXSwapIntervalMESA(unsigned int interval)1796 glXSwapIntervalMESA(unsigned int interval)
1797 {
1798 #ifdef GLX_DIRECT_RENDERING
1799 struct glx_context *gc = __glXGetCurrentContext();
1800
1801 if (interval > INT_MAX)
1802 return GLX_BAD_VALUE;
1803
1804 if (gc != &dummyContext && gc->isDirect) {
1805 struct glx_screen *psc = gc->psc;
1806 if (psc && psc->driScreen && psc->driScreen->setSwapInterval) {
1807 __GLXDRIdrawable *pdraw =
1808 GetGLXDRIDrawable(gc->currentDpy, gc->currentDrawable);
1809
1810 /* Simply ignore the command if the GLX drawable has been destroyed but
1811 * the context is still bound.
1812 */
1813 if (!pdraw)
1814 return 0;
1815
1816 return psc->driScreen->setSwapInterval(pdraw, interval);
1817 }
1818 }
1819 #endif
1820
1821 return GLX_BAD_CONTEXT;
1822 }
1823
1824
1825 _X_HIDDEN int
glXGetSwapIntervalMESA(void)1826 glXGetSwapIntervalMESA(void)
1827 {
1828 #ifdef GLX_DIRECT_RENDERING
1829 struct glx_context *gc = __glXGetCurrentContext();
1830
1831 if (gc != &dummyContext && gc->isDirect) {
1832 struct glx_screen *psc = gc->psc;
1833 if (psc && psc->driScreen && psc->driScreen->getSwapInterval) {
1834 __GLXDRIdrawable *pdraw =
1835 GetGLXDRIDrawable(gc->currentDpy, gc->currentDrawable);
1836 if (pdraw)
1837 return psc->driScreen->getSwapInterval(pdraw);
1838 }
1839 }
1840 #endif
1841
1842 return 0;
1843 }
1844
1845
1846 /*
1847 ** GLX_EXT_swap_control
1848 */
1849 _X_HIDDEN void
glXSwapIntervalEXT(Display * dpy,GLXDrawable drawable,int interval)1850 glXSwapIntervalEXT(Display *dpy, GLXDrawable drawable, int interval)
1851 {
1852 #ifdef GLX_DIRECT_RENDERING
1853 __GLXDRIdrawable *pdraw = GetGLXDRIDrawable(dpy, drawable);
1854
1855 /*
1856 * Strictly, this should throw an error if drawable is not a Window or
1857 * GLXWindow. We don't actually track that, so, oh well.
1858 */
1859 if (!pdraw) {
1860 __glXSendError(dpy, BadWindow, drawable, 0, True);
1861 return;
1862 }
1863
1864 if (interval < 0 &&
1865 !__glXExtensionBitIsEnabled(pdraw->psc, EXT_swap_control_tear_bit)) {
1866 __glXSendError(dpy, BadValue, interval, 0, True);
1867 return;
1868 }
1869 if (pdraw->psc->driScreen->setSwapInterval)
1870 pdraw->psc->driScreen->setSwapInterval(pdraw, interval);
1871 #endif
1872 }
1873
1874
1875 /*
1876 ** GLX_SGI_video_sync
1877 */
1878 _X_HIDDEN int
glXGetVideoSyncSGI(unsigned int * count)1879 glXGetVideoSyncSGI(unsigned int *count)
1880 {
1881 #ifdef GLX_DIRECT_RENDERING
1882 int64_t ust, msc, sbc;
1883 int ret;
1884 struct glx_context *gc = __glXGetCurrentContext();
1885 struct glx_screen *psc = gc->psc;
1886 __GLXDRIdrawable *pdraw;
1887
1888 if (gc == &dummyContext)
1889 return GLX_BAD_CONTEXT;
1890
1891 if (!gc->isDirect)
1892 return GLX_BAD_CONTEXT;
1893
1894 if (!gc->currentDrawable)
1895 return GLX_BAD_CONTEXT;
1896
1897 pdraw = GetGLXDRIDrawable(gc->currentDpy, gc->currentDrawable);
1898
1899 /* FIXME: Looking at the GLX_SGI_video_sync spec in the extension registry,
1900 * FIXME: there should be a GLX encoding for this call. I can find no
1901 * FIXME: documentation for the GLX encoding.
1902 */
1903 if (psc && psc->driScreen && psc->driScreen->getDrawableMSC) {
1904 ret = psc->driScreen->getDrawableMSC(psc, pdraw, &ust, &msc, &sbc);
1905 *count = (unsigned) msc;
1906 return (ret == True) ? 0 : GLX_BAD_CONTEXT;
1907 }
1908 #endif
1909
1910 return GLX_BAD_CONTEXT;
1911 }
1912
1913 _X_HIDDEN int
glXWaitVideoSyncSGI(int divisor,int remainder,unsigned int * count)1914 glXWaitVideoSyncSGI(int divisor, int remainder, unsigned int *count)
1915 {
1916 struct glx_context *gc = __glXGetCurrentContext();
1917 #ifdef GLX_DIRECT_RENDERING
1918 struct glx_screen *psc = gc->psc;
1919 __GLXDRIdrawable *pdraw;
1920 int64_t ust, msc, sbc;
1921 int ret;
1922 #endif
1923
1924 if (divisor <= 0 || remainder < 0)
1925 return GLX_BAD_VALUE;
1926
1927 if (gc == &dummyContext)
1928 return GLX_BAD_CONTEXT;
1929
1930 #ifdef GLX_DIRECT_RENDERING
1931 if (!gc->isDirect)
1932 return GLX_BAD_CONTEXT;
1933
1934 if (!gc->currentDrawable)
1935 return GLX_BAD_CONTEXT;
1936
1937 pdraw = GetGLXDRIDrawable(gc->currentDpy, gc->currentDrawable);
1938
1939 if (psc && psc->driScreen && psc->driScreen->waitForMSC) {
1940 ret = psc->driScreen->waitForMSC(pdraw, 0, divisor, remainder, &ust, &msc,
1941 &sbc);
1942 *count = (unsigned) msc;
1943 return (ret == True) ? 0 : GLX_BAD_CONTEXT;
1944 }
1945 #endif
1946
1947 return GLX_BAD_CONTEXT;
1948 }
1949
1950 #endif /* GLX_USE_APPLEGL */
1951
1952 /*
1953 ** GLX_SGIX_fbconfig
1954 ** Many of these functions are aliased to GLX 1.3 entry points in the
1955 ** GLX_functions table.
1956 */
1957
1958 _GLX_PUBLIC
1959 GLX_ALIAS(int, glXGetFBConfigAttribSGIX,
1960 (Display * dpy, GLXFBConfigSGIX config, int attribute, int *value),
1961 (dpy, config, attribute, value), glXGetFBConfigAttrib)
1962
1963 _GLX_PUBLIC GLX_ALIAS(GLXFBConfigSGIX *, glXChooseFBConfigSGIX,
1964 (Display * dpy, int screen, int *attrib_list,
1965 int *nelements), (dpy, screen, attrib_list, nelements),
1966 glXChooseFBConfig)
1967
1968 _GLX_PUBLIC GLX_ALIAS(XVisualInfo *, glXGetVisualFromFBConfigSGIX,
1969 (Display * dpy, GLXFBConfigSGIX config),
1970 (dpy, config), glXGetVisualFromFBConfig)
1971
1972 _GLX_PUBLIC GLXPixmap
glXCreateGLXPixmapWithConfigSGIX(Display * dpy,GLXFBConfigSGIX fbconfig,Pixmap pixmap)1973 glXCreateGLXPixmapWithConfigSGIX(Display * dpy,
1974 GLXFBConfigSGIX fbconfig,
1975 Pixmap pixmap)
1976 {
1977 #ifndef GLX_USE_APPLEGL
1978 xGLXVendorPrivateWithReplyReq *vpreq;
1979 xGLXCreateGLXPixmapWithConfigSGIXReq *req;
1980 GLXPixmap xid = None;
1981 CARD8 opcode;
1982 struct glx_screen *psc;
1983 #endif
1984 struct glx_config *config = (struct glx_config *) fbconfig;
1985
1986
1987 if ((dpy == NULL) || (config == NULL)) {
1988 return None;
1989 }
1990 #ifdef GLX_USE_APPLEGL
1991 if(apple_glx_pixmap_create(dpy, config->screen, pixmap, config))
1992 return None;
1993 return pixmap;
1994 #else
1995
1996 psc = GetGLXScreenConfigs(dpy, config->screen);
1997 if ((psc != NULL)
1998 && __glXExtensionBitIsEnabled(psc, SGIX_fbconfig_bit)) {
1999 opcode = __glXSetupForCommand(dpy);
2000 if (!opcode) {
2001 return None;
2002 }
2003
2004 /* Send the glXCreateGLXPixmapWithConfigSGIX request */
2005 LockDisplay(dpy);
2006 GetReqExtra(GLXVendorPrivateWithReply,
2007 sz_xGLXCreateGLXPixmapWithConfigSGIXReq -
2008 sz_xGLXVendorPrivateWithReplyReq, vpreq);
2009 req = (xGLXCreateGLXPixmapWithConfigSGIXReq *) vpreq;
2010 req->reqType = opcode;
2011 req->glxCode = X_GLXVendorPrivateWithReply;
2012 req->vendorCode = X_GLXvop_CreateGLXPixmapWithConfigSGIX;
2013 req->screen = config->screen;
2014 req->fbconfig = config->fbconfigID;
2015 req->pixmap = pixmap;
2016 req->glxpixmap = xid = XAllocID(dpy);
2017 UnlockDisplay(dpy);
2018 SyncHandle();
2019 }
2020
2021 return xid;
2022 #endif
2023 }
2024
2025 _GLX_PUBLIC GLXContext
glXCreateContextWithConfigSGIX(Display * dpy,GLXFBConfigSGIX fbconfig,int renderType,GLXContext shareList,Bool allowDirect)2026 glXCreateContextWithConfigSGIX(Display * dpy,
2027 GLXFBConfigSGIX fbconfig, int renderType,
2028 GLXContext shareList, Bool allowDirect)
2029 {
2030 GLXContext gc = NULL;
2031 struct glx_config *config = (struct glx_config *) fbconfig;
2032 struct glx_screen *psc;
2033
2034
2035 if ((dpy == NULL) || (config == NULL)) {
2036 return None;
2037 }
2038
2039 psc = GetGLXScreenConfigs(dpy, config->screen);
2040 if ((psc != NULL)
2041 && __glXExtensionBitIsEnabled(psc, SGIX_fbconfig_bit)) {
2042 gc = CreateContext(dpy, config->fbconfigID, config, shareList,
2043 allowDirect,
2044 X_GLXvop_CreateContextWithConfigSGIX, renderType,
2045 config->screen);
2046 }
2047
2048 return gc;
2049 }
2050
2051
2052 _GLX_PUBLIC GLXFBConfigSGIX
glXGetFBConfigFromVisualSGIX(Display * dpy,XVisualInfo * vis)2053 glXGetFBConfigFromVisualSGIX(Display * dpy, XVisualInfo * vis)
2054 {
2055 struct glx_display *priv;
2056 struct glx_screen *psc = NULL;
2057
2058 if ((GetGLXPrivScreenConfig(dpy, vis->screen, &priv, &psc) == Success)
2059 && __glXExtensionBitIsEnabled(psc, SGIX_fbconfig_bit)
2060 && (psc->configs->fbconfigID != (int) GLX_DONT_CARE)) {
2061 return (GLXFBConfigSGIX) glx_config_find_visual(psc->configs,
2062 vis->visualid);
2063 }
2064
2065 return NULL;
2066 }
2067
2068 #ifndef GLX_USE_APPLEGL
2069 /*
2070 ** GLX_OML_sync_control
2071 */
2072 _X_HIDDEN Bool
glXGetSyncValuesOML(Display * dpy,GLXDrawable drawable,int64_t * ust,int64_t * msc,int64_t * sbc)2073 glXGetSyncValuesOML(Display *dpy, GLXDrawable drawable,
2074 int64_t *ust, int64_t *msc, int64_t *sbc)
2075 {
2076 struct glx_display * const priv = __glXInitialize(dpy);
2077 #ifdef GLX_DIRECT_RENDERING
2078 int ret;
2079 __GLXDRIdrawable *pdraw;
2080 struct glx_screen *psc;
2081 #endif
2082
2083 if (!priv)
2084 return False;
2085
2086 #ifdef GLX_DIRECT_RENDERING
2087 pdraw = GetGLXDRIDrawable(dpy, drawable);
2088 psc = pdraw ? pdraw->psc : NULL;
2089 if (pdraw && psc->driScreen->getDrawableMSC) {
2090 ret = psc->driScreen->getDrawableMSC(psc, pdraw, ust, msc, sbc);
2091 return ret;
2092 }
2093 #endif
2094
2095 return False;
2096 }
2097
2098 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
2099 _X_HIDDEN GLboolean
__glxGetMscRate(struct glx_screen * psc,int32_t * numerator,int32_t * denominator)2100 __glxGetMscRate(struct glx_screen *psc,
2101 int32_t * numerator, int32_t * denominator)
2102 {
2103 #if !defined(GLX_USE_WINDOWSGL)
2104 XF86VidModeModeLine mode_line;
2105 int dot_clock;
2106 int i;
2107
2108 if (XF86VidModeQueryVersion(psc->dpy, &i, &i) &&
2109 XF86VidModeGetModeLine(psc->dpy, psc->scr, &dot_clock, &mode_line)) {
2110 unsigned n = dot_clock * 1000;
2111 unsigned d = mode_line.vtotal * mode_line.htotal;
2112
2113 # define V_INTERLACE 0x010
2114 # define V_DBLSCAN 0x020
2115
2116 if (mode_line.flags & V_INTERLACE)
2117 n *= 2;
2118 else if (mode_line.flags & V_DBLSCAN)
2119 d *= 2;
2120
2121 /* The OML_sync_control spec requires that if the refresh rate is a
2122 * whole number, that the returned numerator be equal to the refresh
2123 * rate and the denominator be 1.
2124 */
2125
2126 if (n % d == 0) {
2127 n /= d;
2128 d = 1;
2129 }
2130 else {
2131 static const unsigned f[] = { 13, 11, 7, 5, 3, 2, 0 };
2132
2133 /* This is a poor man's way to reduce a fraction. It's far from
2134 * perfect, but it will work well enough for this situation.
2135 */
2136
2137 for (i = 0; f[i] != 0; i++) {
2138 while (n % f[i] == 0 && d % f[i] == 0) {
2139 d /= f[i];
2140 n /= f[i];
2141 }
2142 }
2143 }
2144
2145 *numerator = n;
2146 *denominator = d;
2147
2148 return True;
2149 }
2150 #endif
2151
2152 return False;
2153 }
2154 #endif
2155
2156 /**
2157 * Determine the refresh rate of the specified drawable and display.
2158 *
2159 * \param dpy Display whose refresh rate is to be determined.
2160 * \param drawable Drawable whose refresh rate is to be determined.
2161 * \param numerator Numerator of the refresh rate.
2162 * \param demoninator Denominator of the refresh rate.
2163 * \return If the refresh rate for the specified display and drawable could
2164 * be calculated, True is returned. Otherwise False is returned.
2165 *
2166 * \note This function is implemented entirely client-side. A lot of other
2167 * functionality is required to export GLX_OML_sync_control, so on
2168 * XFree86 this function can be called for direct-rendering contexts
2169 * when GLX_OML_sync_control appears in the client extension string.
2170 */
2171
2172 _X_HIDDEN Bool
glXGetMscRateOML(Display * dpy,GLXDrawable drawable,int32_t * numerator,int32_t * denominator)2173 glXGetMscRateOML(Display * dpy, GLXDrawable drawable,
2174 int32_t * numerator, int32_t * denominator)
2175 {
2176 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL) && !defined(GLX_USE_WINDOWSGL)
2177 __GLXDRIdrawable *draw = GetGLXDRIDrawable(dpy, drawable);
2178
2179 if (draw == NULL)
2180 return False;
2181
2182 return __glxGetMscRate(draw->psc, numerator, denominator);
2183 #else
2184 (void) dpy;
2185 (void) drawable;
2186 (void) numerator;
2187 (void) denominator;
2188 #endif
2189 return False;
2190 }
2191
2192
2193 _X_HIDDEN int64_t
glXSwapBuffersMscOML(Display * dpy,GLXDrawable drawable,int64_t target_msc,int64_t divisor,int64_t remainder)2194 glXSwapBuffersMscOML(Display *dpy, GLXDrawable drawable,
2195 int64_t target_msc, int64_t divisor, int64_t remainder)
2196 {
2197 struct glx_context *gc = __glXGetCurrentContext();
2198 #ifdef GLX_DIRECT_RENDERING
2199 __GLXDRIdrawable *pdraw = GetGLXDRIDrawable(dpy, drawable);
2200 struct glx_screen *psc = pdraw ? pdraw->psc : NULL;
2201 #endif
2202
2203 if (gc == &dummyContext) /* no GLX for this */
2204 return -1;
2205
2206 #ifdef GLX_DIRECT_RENDERING
2207 if (!pdraw || !gc->isDirect)
2208 return -1;
2209 #endif
2210
2211 /* The OML_sync_control spec says these should "generate a GLX_BAD_VALUE
2212 * error", but it also says "It [glXSwapBuffersMscOML] will return a value
2213 * of -1 if the function failed because of errors detected in the input
2214 * parameters"
2215 */
2216 if (divisor < 0 || remainder < 0 || target_msc < 0)
2217 return -1;
2218 if (divisor > 0 && remainder >= divisor)
2219 return -1;
2220
2221 if (target_msc == 0 && divisor == 0 && remainder == 0)
2222 remainder = 1;
2223
2224 #ifdef GLX_DIRECT_RENDERING
2225 if (psc->driScreen && psc->driScreen->swapBuffers)
2226 return (*psc->driScreen->swapBuffers)(pdraw, target_msc, divisor,
2227 remainder, False);
2228 #endif
2229
2230 return -1;
2231 }
2232
2233
2234 _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)2235 glXWaitForMscOML(Display *dpy, GLXDrawable drawable, int64_t target_msc,
2236 int64_t divisor, int64_t remainder, int64_t *ust,
2237 int64_t *msc, int64_t *sbc)
2238 {
2239 #ifdef GLX_DIRECT_RENDERING
2240 __GLXDRIdrawable *pdraw = GetGLXDRIDrawable(dpy, drawable);
2241 struct glx_screen *psc = pdraw ? pdraw->psc : NULL;
2242 int ret;
2243 #endif
2244
2245
2246 /* The OML_sync_control spec says these should "generate a GLX_BAD_VALUE
2247 * error", but the return type in the spec is Bool.
2248 */
2249 if (divisor < 0 || remainder < 0 || target_msc < 0)
2250 return False;
2251 if (divisor > 0 && remainder >= divisor)
2252 return False;
2253
2254 #ifdef GLX_DIRECT_RENDERING
2255 if (pdraw && psc->driScreen && psc->driScreen->waitForMSC) {
2256 ret = psc->driScreen->waitForMSC(pdraw, target_msc, divisor, remainder,
2257 ust, msc, sbc);
2258 return ret;
2259 }
2260 #endif
2261
2262 return False;
2263 }
2264
2265
2266 _X_HIDDEN Bool
glXWaitForSbcOML(Display * dpy,GLXDrawable drawable,int64_t target_sbc,int64_t * ust,int64_t * msc,int64_t * sbc)2267 glXWaitForSbcOML(Display *dpy, GLXDrawable drawable, int64_t target_sbc,
2268 int64_t *ust, int64_t *msc, int64_t *sbc)
2269 {
2270 #ifdef GLX_DIRECT_RENDERING
2271 __GLXDRIdrawable *pdraw = GetGLXDRIDrawable(dpy, drawable);
2272 struct glx_screen *psc = pdraw ? pdraw->psc : NULL;
2273 int ret;
2274 #endif
2275
2276 /* The OML_sync_control spec says this should "generate a GLX_BAD_VALUE
2277 * error", but the return type in the spec is Bool.
2278 */
2279 if (target_sbc < 0)
2280 return False;
2281
2282 #ifdef GLX_DIRECT_RENDERING
2283 if (pdraw && psc->driScreen && psc->driScreen->waitForSBC) {
2284 ret = psc->driScreen->waitForSBC(pdraw, target_sbc, ust, msc, sbc);
2285 return ret;
2286 }
2287 #endif
2288
2289 return False;
2290 }
2291
2292 /*@}*/
2293
2294
2295 /**
2296 * Mesa extension stubs. These will help reduce portability problems.
2297 */
2298 /*@{*/
2299
2300 /**
2301 * Release all buffers associated with the specified GLX drawable.
2302 *
2303 * \todo
2304 * This function was intended for stand-alone Mesa. The issue there is that
2305 * the library doesn't get any notification when a window is closed. In
2306 * DRI there is a similar but slightly different issue. When GLX 1.3 is
2307 * supported, there are 3 different functions to destroy a drawable. It
2308 * should be possible to create GLX protocol (or have it determine which
2309 * protocol to use based on the type of the drawable) to have one function
2310 * do the work of 3. For the direct-rendering case, this function could
2311 * just call the driver's \c __DRIdrawableRec::destroyDrawable function.
2312 * This would reduce the frequency with which \c __driGarbageCollectDrawables
2313 * would need to be used. This really should be done as part of the new DRI
2314 * interface work.
2315 *
2316 * \sa http://oss.sgi.com/projects/ogl-sample/registry/MESA/release_buffers.txt
2317 * __driGarbageCollectDrawables
2318 * glXDestroyGLXPixmap
2319 * glXDestroyPbuffer glXDestroyPixmap glXDestroyWindow
2320 * glXDestroyGLXPbufferSGIX glXDestroyGLXVideoSourceSGIX
2321 */
2322 _X_HIDDEN Bool
glXReleaseBuffersMESA(Display * dpy,GLXDrawable d)2323 glXReleaseBuffersMESA(Display * dpy, GLXDrawable d)
2324 {
2325 (void) dpy;
2326 (void) d;
2327 return False;
2328 }
2329
2330
2331 _GLX_PUBLIC GLXPixmap
glXCreateGLXPixmapMESA(Display * dpy,XVisualInfo * visual,Pixmap pixmap,Colormap cmap)2332 glXCreateGLXPixmapMESA(Display * dpy, XVisualInfo * visual,
2333 Pixmap pixmap, Colormap cmap)
2334 {
2335 (void) dpy;
2336 (void) visual;
2337 (void) pixmap;
2338 (void) cmap;
2339 return 0;
2340 }
2341
2342 /*@}*/
2343
2344
2345 /**
2346 * GLX_MESA_copy_sub_buffer
2347 */
2348 #define X_GLXvop_CopySubBufferMESA 5154 /* temporary */
2349 _X_HIDDEN void
glXCopySubBufferMESA(Display * dpy,GLXDrawable drawable,int x,int y,int width,int height)2350 glXCopySubBufferMESA(Display * dpy, GLXDrawable drawable,
2351 int x, int y, int width, int height)
2352 {
2353 xGLXVendorPrivateReq *req;
2354 struct glx_context *gc;
2355 GLXContextTag tag;
2356 CARD32 *drawable_ptr;
2357 INT32 *x_ptr, *y_ptr, *w_ptr, *h_ptr;
2358 CARD8 opcode;
2359
2360 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
2361 __GLXDRIdrawable *pdraw = GetGLXDRIDrawable(dpy, drawable);
2362 if (pdraw != NULL) {
2363 struct glx_screen *psc = pdraw->psc;
2364 if (psc->driScreen->copySubBuffer != NULL) {
2365 (*psc->driScreen->copySubBuffer) (pdraw, x, y, width, height, True);
2366 }
2367
2368 return;
2369 }
2370 #endif
2371
2372 opcode = __glXSetupForCommand(dpy);
2373 if (!opcode)
2374 return;
2375
2376 /*
2377 ** The calling thread may or may not have a current context. If it
2378 ** does, send the context tag so the server can do a flush.
2379 */
2380 gc = __glXGetCurrentContext();
2381 if ((gc != &dummyContext) && (dpy == gc->currentDpy) &&
2382 ((drawable == gc->currentDrawable) ||
2383 (drawable == gc->currentReadable))) {
2384 tag = gc->currentContextTag;
2385 }
2386 else {
2387 tag = 0;
2388 }
2389
2390 LockDisplay(dpy);
2391 GetReqExtra(GLXVendorPrivate, sizeof(CARD32) + sizeof(INT32) * 4, req);
2392 req->reqType = opcode;
2393 req->glxCode = X_GLXVendorPrivate;
2394 req->vendorCode = X_GLXvop_CopySubBufferMESA;
2395 req->contextTag = tag;
2396
2397 drawable_ptr = (CARD32 *) (req + 1);
2398 x_ptr = (INT32 *) (drawable_ptr + 1);
2399 y_ptr = (INT32 *) (drawable_ptr + 2);
2400 w_ptr = (INT32 *) (drawable_ptr + 3);
2401 h_ptr = (INT32 *) (drawable_ptr + 4);
2402
2403 *drawable_ptr = drawable;
2404 *x_ptr = x;
2405 *y_ptr = y;
2406 *w_ptr = width;
2407 *h_ptr = height;
2408
2409 UnlockDisplay(dpy);
2410 SyncHandle();
2411 }
2412
2413 /*@{*/
2414 _X_HIDDEN void
glXBindTexImageEXT(Display * dpy,GLXDrawable drawable,int buffer,const int * attrib_list)2415 glXBindTexImageEXT(Display *dpy, GLXDrawable drawable, int buffer,
2416 const int *attrib_list)
2417 {
2418 xGLXVendorPrivateReq *req;
2419 struct glx_context *gc = __glXGetCurrentContext();
2420 CARD32 *drawable_ptr;
2421 INT32 *buffer_ptr;
2422 CARD32 *num_attrib_ptr;
2423 CARD32 *attrib_ptr;
2424 CARD8 opcode;
2425 unsigned int i = 0;
2426
2427 #ifdef GLX_DIRECT_RENDERING
2428 __GLXDRIdrawable *pdraw = GetGLXDRIDrawable(dpy, drawable);
2429 if (pdraw != NULL) {
2430 struct glx_screen *psc = pdraw->psc;
2431 if (psc->driScreen->bindTexImage != NULL)
2432 (*psc->driScreen->bindTexImage) (pdraw, buffer, attrib_list);
2433
2434 return;
2435 }
2436 #endif
2437
2438 if (attrib_list) {
2439 while (attrib_list[i * 2] != None)
2440 i++;
2441 }
2442
2443 opcode = __glXSetupForCommand(dpy);
2444 if (!opcode)
2445 return;
2446
2447 LockDisplay(dpy);
2448 GetReqExtra(GLXVendorPrivate, 12 + 8 * i, req);
2449 req->reqType = opcode;
2450 req->glxCode = X_GLXVendorPrivate;
2451 req->vendorCode = X_GLXvop_BindTexImageEXT;
2452 req->contextTag = gc->currentContextTag;
2453
2454 drawable_ptr = (CARD32 *) (req + 1);
2455 buffer_ptr = (INT32 *) (drawable_ptr + 1);
2456 num_attrib_ptr = (CARD32 *) (buffer_ptr + 1);
2457 attrib_ptr = (CARD32 *) (num_attrib_ptr + 1);
2458
2459 *drawable_ptr = drawable;
2460 *buffer_ptr = buffer;
2461 *num_attrib_ptr = (CARD32) i;
2462
2463 i = 0;
2464 if (attrib_list) {
2465 while (attrib_list[i * 2] != None) {
2466 *attrib_ptr++ = (CARD32) attrib_list[i * 2 + 0];
2467 *attrib_ptr++ = (CARD32) attrib_list[i * 2 + 1];
2468 i++;
2469 }
2470 }
2471
2472 UnlockDisplay(dpy);
2473 SyncHandle();
2474 }
2475
2476 _X_HIDDEN void
glXReleaseTexImageEXT(Display * dpy,GLXDrawable drawable,int buffer)2477 glXReleaseTexImageEXT(Display * dpy, GLXDrawable drawable, int buffer)
2478 {
2479 xGLXVendorPrivateReq *req;
2480 struct glx_context *gc = __glXGetCurrentContext();
2481 CARD32 *drawable_ptr;
2482 INT32 *buffer_ptr;
2483 CARD8 opcode;
2484
2485 #ifdef GLX_DIRECT_RENDERING
2486 __GLXDRIdrawable *pdraw = GetGLXDRIDrawable(dpy, drawable);
2487 if (pdraw != NULL) {
2488 struct glx_screen *psc = pdraw->psc;
2489 if (psc->driScreen->releaseTexImage != NULL)
2490 (*psc->driScreen->releaseTexImage) (pdraw, buffer);
2491
2492 return;
2493 }
2494 #endif
2495
2496 opcode = __glXSetupForCommand(dpy);
2497 if (!opcode)
2498 return;
2499
2500 LockDisplay(dpy);
2501 GetReqExtra(GLXVendorPrivate, sizeof(CARD32) + sizeof(INT32), req);
2502 req->reqType = opcode;
2503 req->glxCode = X_GLXVendorPrivate;
2504 req->vendorCode = X_GLXvop_ReleaseTexImageEXT;
2505 req->contextTag = gc->currentContextTag;
2506
2507 drawable_ptr = (CARD32 *) (req + 1);
2508 buffer_ptr = (INT32 *) (drawable_ptr + 1);
2509
2510 *drawable_ptr = drawable;
2511 *buffer_ptr = buffer;
2512
2513 UnlockDisplay(dpy);
2514 SyncHandle();
2515 }
2516
2517 /*@}*/
2518
2519 #endif /* GLX_USE_APPLEGL */
2520
2521 /*
2522 ** glXGetProcAddress support
2523 */
2524
2525 struct name_address_pair
2526 {
2527 const char *Name;
2528 GLvoid *Address;
2529 };
2530
2531 #define GLX_FUNCTION(f) { # f, (GLvoid *) f }
2532 #define GLX_FUNCTION2(n,f) { # n, (GLvoid *) f }
2533
2534 static const struct name_address_pair GLX_functions[] = {
2535 /*** GLX_VERSION_1_0 ***/
2536 GLX_FUNCTION(glXChooseVisual),
2537 GLX_FUNCTION(glXCopyContext),
2538 GLX_FUNCTION(glXCreateContext),
2539 GLX_FUNCTION(glXCreateGLXPixmap),
2540 GLX_FUNCTION(glXDestroyContext),
2541 GLX_FUNCTION(glXDestroyGLXPixmap),
2542 GLX_FUNCTION(glXGetConfig),
2543 GLX_FUNCTION(glXGetCurrentContext),
2544 GLX_FUNCTION(glXGetCurrentDrawable),
2545 GLX_FUNCTION(glXIsDirect),
2546 GLX_FUNCTION(glXMakeCurrent),
2547 GLX_FUNCTION(glXQueryExtension),
2548 GLX_FUNCTION(glXQueryVersion),
2549 GLX_FUNCTION(glXSwapBuffers),
2550 GLX_FUNCTION(glXUseXFont),
2551 GLX_FUNCTION(glXWaitGL),
2552 GLX_FUNCTION(glXWaitX),
2553
2554 /*** GLX_VERSION_1_1 ***/
2555 GLX_FUNCTION(glXGetClientString),
2556 GLX_FUNCTION(glXQueryExtensionsString),
2557 GLX_FUNCTION(glXQueryServerString),
2558
2559 /*** GLX_VERSION_1_2 ***/
2560 GLX_FUNCTION(glXGetCurrentDisplay),
2561
2562 /*** GLX_VERSION_1_3 ***/
2563 GLX_FUNCTION(glXChooseFBConfig),
2564 GLX_FUNCTION(glXCreateNewContext),
2565 GLX_FUNCTION(glXCreatePbuffer),
2566 GLX_FUNCTION(glXCreatePixmap),
2567 GLX_FUNCTION(glXCreateWindow),
2568 GLX_FUNCTION(glXDestroyPbuffer),
2569 GLX_FUNCTION(glXDestroyPixmap),
2570 GLX_FUNCTION(glXDestroyWindow),
2571 GLX_FUNCTION(glXGetCurrentReadDrawable),
2572 GLX_FUNCTION(glXGetFBConfigAttrib),
2573 GLX_FUNCTION(glXGetFBConfigs),
2574 GLX_FUNCTION(glXGetSelectedEvent),
2575 GLX_FUNCTION(glXGetVisualFromFBConfig),
2576 GLX_FUNCTION(glXMakeContextCurrent),
2577 GLX_FUNCTION(glXQueryContext),
2578 GLX_FUNCTION(glXQueryDrawable),
2579 GLX_FUNCTION(glXSelectEvent),
2580
2581 /*** GLX_SGIX_fbconfig ***/
2582 GLX_FUNCTION2(glXGetFBConfigAttribSGIX, glXGetFBConfigAttrib),
2583 GLX_FUNCTION2(glXChooseFBConfigSGIX, glXChooseFBConfig),
2584 GLX_FUNCTION(glXCreateGLXPixmapWithConfigSGIX),
2585 GLX_FUNCTION(glXCreateContextWithConfigSGIX),
2586 GLX_FUNCTION2(glXGetVisualFromFBConfigSGIX, glXGetVisualFromFBConfig),
2587 GLX_FUNCTION(glXGetFBConfigFromVisualSGIX),
2588
2589 /*** GLX_ARB_get_proc_address ***/
2590 GLX_FUNCTION(glXGetProcAddressARB),
2591
2592 /*** GLX 1.4 ***/
2593 GLX_FUNCTION2(glXGetProcAddress, glXGetProcAddressARB),
2594
2595 #ifndef GLX_USE_APPLEGL
2596 /*** GLX_SGI_swap_control ***/
2597 GLX_FUNCTION(glXSwapIntervalSGI),
2598
2599 /*** GLX_SGI_video_sync ***/
2600 GLX_FUNCTION(glXGetVideoSyncSGI),
2601 GLX_FUNCTION(glXWaitVideoSyncSGI),
2602
2603 /*** GLX_SGI_make_current_read ***/
2604 GLX_FUNCTION2(glXMakeCurrentReadSGI, glXMakeContextCurrent),
2605 GLX_FUNCTION2(glXGetCurrentReadDrawableSGI, glXGetCurrentReadDrawable),
2606
2607 /*** GLX_EXT_import_context ***/
2608 GLX_FUNCTION(glXFreeContextEXT),
2609 GLX_FUNCTION(glXGetContextIDEXT),
2610 GLX_FUNCTION2(glXGetCurrentDisplayEXT, glXGetCurrentDisplay),
2611 GLX_FUNCTION(glXImportContextEXT),
2612 GLX_FUNCTION2(glXQueryContextInfoEXT, glXQueryContext),
2613
2614 /*** GLX_SGIX_pbuffer ***/
2615 GLX_FUNCTION(glXCreateGLXPbufferSGIX),
2616 GLX_FUNCTION(glXDestroyGLXPbufferSGIX),
2617 GLX_FUNCTION(glXQueryGLXPbufferSGIX),
2618 GLX_FUNCTION(glXSelectEventSGIX),
2619 GLX_FUNCTION(glXGetSelectedEventSGIX),
2620
2621 /*** GLX_MESA_copy_sub_buffer ***/
2622 GLX_FUNCTION(glXCopySubBufferMESA),
2623
2624 /*** GLX_MESA_pixmap_colormap ***/
2625 GLX_FUNCTION(glXCreateGLXPixmapMESA),
2626
2627 /*** GLX_MESA_release_buffers ***/
2628 GLX_FUNCTION(glXReleaseBuffersMESA),
2629
2630 /*** GLX_MESA_swap_control ***/
2631 GLX_FUNCTION(glXSwapIntervalMESA),
2632 GLX_FUNCTION(glXGetSwapIntervalMESA),
2633
2634 /*** GLX_OML_sync_control ***/
2635 GLX_FUNCTION(glXWaitForSbcOML),
2636 GLX_FUNCTION(glXWaitForMscOML),
2637 GLX_FUNCTION(glXSwapBuffersMscOML),
2638 GLX_FUNCTION(glXGetMscRateOML),
2639 GLX_FUNCTION(glXGetSyncValuesOML),
2640
2641 /*** GLX_EXT_texture_from_pixmap ***/
2642 GLX_FUNCTION(glXBindTexImageEXT),
2643 GLX_FUNCTION(glXReleaseTexImageEXT),
2644
2645 /*** GLX_EXT_swap_control ***/
2646 GLX_FUNCTION(glXSwapIntervalEXT),
2647 #endif
2648
2649 #if defined(GLX_DIRECT_RENDERING) && defined(GLX_USE_DRM)
2650 /*** DRI configuration ***/
2651 GLX_FUNCTION(glXGetScreenDriver),
2652 GLX_FUNCTION(glXGetDriverConfig),
2653 #endif
2654
2655 /*** GLX_ARB_create_context and GLX_ARB_create_context_profile ***/
2656 GLX_FUNCTION(glXCreateContextAttribsARB),
2657
2658 /*** GLX_MESA_query_renderer ***/
2659 GLX_FUNCTION(glXQueryRendererIntegerMESA),
2660 GLX_FUNCTION(glXQueryRendererStringMESA),
2661 GLX_FUNCTION(glXQueryCurrentRendererIntegerMESA),
2662 GLX_FUNCTION(glXQueryCurrentRendererStringMESA),
2663
2664 {NULL, NULL} /* end of list */
2665 };
2666
2667 static const GLvoid *
get_glx_proc_address(const char * funcName)2668 get_glx_proc_address(const char *funcName)
2669 {
2670 GLuint i;
2671
2672 /* try static functions */
2673 for (i = 0; GLX_functions[i].Name; i++) {
2674 if (strcmp(GLX_functions[i].Name, funcName) == 0)
2675 return GLX_functions[i].Address;
2676 }
2677
2678 return NULL;
2679 }
2680
2681 /**
2682 * Get the address of a named GL function. This is the pre-GLX 1.4 name for
2683 * \c glXGetProcAddress.
2684 *
2685 * \param procName Name of a GL or GLX function.
2686 * \returns A pointer to the named function
2687 *
2688 * \sa glXGetProcAddress
2689 */
glXGetProcAddressARB(const GLubyte * procName)2690 _GLX_PUBLIC void (*glXGetProcAddressARB(const GLubyte * procName)) (void)
2691 {
2692 typedef void (*gl_function) (void);
2693 gl_function f;
2694
2695
2696 /* Search the table of GLX and internal functions first. If that
2697 * fails and the supplied name could be a valid core GL name, try
2698 * searching the core GL function table. This check is done to prevent
2699 * DRI based drivers from searching the core GL function table for
2700 * internal API functions.
2701 */
2702 f = (gl_function) get_glx_proc_address((const char *) procName);
2703 if ((f == NULL) && (procName[0] == 'g') && (procName[1] == 'l')
2704 && (procName[2] != 'X')) {
2705 #ifdef GLX_INDIRECT_RENDERING
2706 f = (gl_function) __indirect_get_proc_address((const char *) procName);
2707 #endif
2708 if (!f)
2709 f = (gl_function) _glapi_get_proc_address((const char *) procName);
2710 #ifdef GLX_USE_APPLEGL
2711 if (!f)
2712 f = applegl_get_proc_address((const char *) procName);
2713 #endif
2714 }
2715 return f;
2716 }
2717
2718 /**
2719 * Get the address of a named GL function. This is the GLX 1.4 name for
2720 * \c glXGetProcAddressARB.
2721 *
2722 * \param procName Name of a GL or GLX function.
2723 * \returns A pointer to the named function
2724 *
2725 * \sa glXGetProcAddressARB
2726 */
2727 _GLX_PUBLIC
2728 GLX_ALIAS(__GLXextFuncPtr, glXGetProcAddress,
2729 (const GLubyte * procName),
2730 (procName), glXGetProcAddressARB)
2731
2732 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
2733
2734 PUBLIC int
MesaGLInteropGLXQueryDeviceInfo(Display * dpy,GLXContext context,struct mesa_glinterop_device_info * out)2735 MesaGLInteropGLXQueryDeviceInfo(Display *dpy, GLXContext context,
2736 struct mesa_glinterop_device_info *out)
2737 {
2738 struct glx_context *gc = (struct glx_context*)context;
2739 int ret;
2740
2741 __glXLock();
2742
2743 if (!gc || gc->xid == None || !gc->isDirect) {
2744 __glXUnlock();
2745 return MESA_GLINTEROP_INVALID_CONTEXT;
2746 }
2747
2748 if (!gc->vtable->interop_query_device_info) {
2749 __glXUnlock();
2750 return MESA_GLINTEROP_UNSUPPORTED;
2751 }
2752
2753 ret = gc->vtable->interop_query_device_info(gc, out);
2754 __glXUnlock();
2755 return ret;
2756 }
2757
2758 PUBLIC int
MesaGLInteropGLXExportObject(Display * dpy,GLXContext context,struct mesa_glinterop_export_in * in,struct mesa_glinterop_export_out * out)2759 MesaGLInteropGLXExportObject(Display *dpy, GLXContext context,
2760 struct mesa_glinterop_export_in *in,
2761 struct mesa_glinterop_export_out *out)
2762 {
2763 struct glx_context *gc = (struct glx_context*)context;
2764 int ret;
2765
2766 __glXLock();
2767
2768 if (!gc || gc->xid == None || !gc->isDirect) {
2769 __glXUnlock();
2770 return MESA_GLINTEROP_INVALID_CONTEXT;
2771 }
2772
2773 if (!gc->vtable->interop_export_object) {
2774 __glXUnlock();
2775 return MESA_GLINTEROP_UNSUPPORTED;
2776 }
2777
2778 ret = gc->vtable->interop_export_object(gc, in, out);
2779 __glXUnlock();
2780 return ret;
2781 }
2782
2783 #endif /* defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL) */
2784