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 /* Some application may request an indirect context but we may want to force a direct
343 * one because Xorg only allows indirect contexts if they were enabled.
344 */
345 if (!allowDirect &&
346 psc->force_direct_context) {
347 allowDirect = 1;
348 }
349
350 gc = NULL;
351 #ifdef GLX_USE_APPLEGL
352 gc = applegl_create_context(psc, config, shareList, renderType);
353 #else
354 if (allowDirect && psc->vtable->create_context)
355 gc = psc->vtable->create_context(psc, config, shareList, renderType);
356 if (!gc)
357 gc = indirect_create_context(psc, config, shareList, renderType);
358 #endif
359 if (!gc)
360 return NULL;
361
362 LockDisplay(dpy);
363 switch (code) {
364 case X_GLXCreateContext: {
365 xGLXCreateContextReq *req;
366
367 /* Send the glXCreateContext request */
368 GetReq(GLXCreateContext, req);
369 req->reqType = gc->majorOpcode;
370 req->glxCode = X_GLXCreateContext;
371 req->context = gc->xid = XAllocID(dpy);
372 req->visual = generic_id;
373 req->screen = screen;
374 req->shareList = shareList ? shareList->xid : None;
375 req->isDirect = gc->isDirect;
376 break;
377 }
378
379 case X_GLXCreateNewContext: {
380 xGLXCreateNewContextReq *req;
381
382 /* Send the glXCreateNewContext request */
383 GetReq(GLXCreateNewContext, req);
384 req->reqType = gc->majorOpcode;
385 req->glxCode = X_GLXCreateNewContext;
386 req->context = gc->xid = XAllocID(dpy);
387 req->fbconfig = generic_id;
388 req->screen = screen;
389 req->renderType = renderType;
390 req->shareList = shareList ? shareList->xid : None;
391 req->isDirect = gc->isDirect;
392 break;
393 }
394
395 case X_GLXvop_CreateContextWithConfigSGIX: {
396 xGLXVendorPrivateWithReplyReq *vpreq;
397 xGLXCreateContextWithConfigSGIXReq *req;
398
399 /* Send the glXCreateNewContext request */
400 GetReqExtra(GLXVendorPrivateWithReply,
401 sz_xGLXCreateContextWithConfigSGIXReq -
402 sz_xGLXVendorPrivateWithReplyReq, vpreq);
403 req = (xGLXCreateContextWithConfigSGIXReq *) vpreq;
404 req->reqType = gc->majorOpcode;
405 req->glxCode = X_GLXVendorPrivateWithReply;
406 req->vendorCode = X_GLXvop_CreateContextWithConfigSGIX;
407 req->context = gc->xid = XAllocID(dpy);
408 req->fbconfig = generic_id;
409 req->screen = screen;
410 req->renderType = renderType;
411 req->shareList = shareList ? shareList->xid : None;
412 req->isDirect = gc->isDirect;
413 break;
414 }
415
416 default:
417 /* What to do here? This case is the sign of an internal error. It
418 * should never be reachable.
419 */
420 break;
421 }
422
423 UnlockDisplay(dpy);
424 SyncHandle();
425
426 gc->share_xid = shareList ? shareList->xid : None;
427 gc->imported = GL_FALSE;
428
429 /* Unlike most X resource creation requests, we're about to return a handle
430 * with client-side state, not just an XID. To simplify error handling
431 * elsewhere in libGL, force a round-trip here to ensure the CreateContext
432 * request above succeeded.
433 */
434 {
435 Bool error = False;
436 int isDirect = __glXIsDirect(dpy, gc->xid, &error);
437
438 if (error != False || isDirect != gc->isDirect) {
439 gc->vtable->destroy(gc);
440 gc = NULL;
441 }
442 }
443
444 return (GLXContext) gc;
445 }
446
447 _GLX_PUBLIC GLXContext
glXCreateContext(Display * dpy,XVisualInfo * vis,GLXContext shareList,Bool allowDirect)448 glXCreateContext(Display * dpy, XVisualInfo * vis,
449 GLXContext shareList, Bool allowDirect)
450 {
451 struct glx_config *config = NULL;
452 int renderType = GLX_RGBA_TYPE;
453
454 #if defined(GLX_DIRECT_RENDERING) || defined(GLX_USE_APPLEGL)
455 struct glx_screen *const psc = GetGLXScreenConfigs(dpy, vis->screen);
456
457 if (psc)
458 config = glx_config_find_visual(psc->visuals, vis->visualid);
459
460 if (config == NULL) {
461 __glXSendError(dpy, BadValue, vis->visualid, X_GLXCreateContext, True);
462 return None;
463 }
464
465 /* Choose the context render type based on DRI config values. It is
466 * unusual to set this type from config, but we have no other choice, as
467 * this old API does not provide renderType parameter.
468 */
469 if (config->renderType & GLX_RGBA_FLOAT_BIT_ARB) {
470 renderType = GLX_RGBA_FLOAT_TYPE_ARB;
471 } else if (config->renderType & GLX_RGBA_UNSIGNED_FLOAT_BIT_EXT) {
472 renderType = GLX_RGBA_UNSIGNED_FLOAT_TYPE_EXT;
473 } else if (config->renderType & GLX_RGBA_BIT) {
474 renderType = GLX_RGBA_TYPE;
475 } else if (config->renderType & GLX_COLOR_INDEX_BIT) {
476 renderType = GLX_COLOR_INDEX_TYPE;
477 }
478 #endif
479
480 return CreateContext(dpy, vis->visualid, config, shareList, allowDirect,
481 X_GLXCreateContext, renderType, vis->screen);
482 }
483
484 static void
glx_send_destroy_context(Display * dpy,XID xid)485 glx_send_destroy_context(Display *dpy, XID xid)
486 {
487 CARD8 opcode = __glXSetupForCommand(dpy);
488 xGLXDestroyContextReq *req;
489
490 LockDisplay(dpy);
491 GetReq(GLXDestroyContext, req);
492 req->reqType = opcode;
493 req->glxCode = X_GLXDestroyContext;
494 req->context = xid;
495 UnlockDisplay(dpy);
496 SyncHandle();
497 }
498
499 /*
500 ** Destroy the named context
501 */
502
503 _GLX_PUBLIC void
glXDestroyContext(Display * dpy,GLXContext ctx)504 glXDestroyContext(Display * dpy, GLXContext ctx)
505 {
506 struct glx_context *gc = (struct glx_context *) ctx;
507
508 if (gc == NULL || gc->xid == None)
509 return;
510
511 __glXLock();
512 if (!gc->imported)
513 glx_send_destroy_context(dpy, gc->xid);
514
515 if (gc->currentDpy) {
516 /* This context is bound to some thread. According to the man page,
517 * we should not actually delete the context until it's unbound.
518 * Note that we set gc->xid = None above. In MakeContextCurrent()
519 * we check for that and delete the context there.
520 */
521 gc->xid = None;
522 } else {
523 gc->vtable->destroy(gc);
524 }
525 __glXUnlock();
526 }
527
528 /*
529 ** Return the major and minor version #s for the GLX extension
530 */
531 _GLX_PUBLIC Bool
glXQueryVersion(Display * dpy,int * major,int * minor)532 glXQueryVersion(Display * dpy, int *major, int *minor)
533 {
534 struct glx_display *priv;
535
536 /* Init the extension. This fetches the major and minor version. */
537 priv = __glXInitialize(dpy);
538 if (!priv)
539 return False;
540
541 if (major)
542 *major = GLX_MAJOR_VERSION;
543 if (minor)
544 *minor = priv->minorVersion;
545 return True;
546 }
547
548 /*
549 ** Query the existence of the GLX extension
550 */
551 _GLX_PUBLIC Bool
glXQueryExtension(Display * dpy,int * errorBase,int * eventBase)552 glXQueryExtension(Display * dpy, int *errorBase, int *eventBase)
553 {
554 int major_op, erb, evb;
555 Bool rv;
556
557 rv = XQueryExtension(dpy, GLX_EXTENSION_NAME, &major_op, &evb, &erb);
558 if (rv) {
559 if (errorBase)
560 *errorBase = erb;
561 if (eventBase)
562 *eventBase = evb;
563 }
564 return rv;
565 }
566
567 /*
568 ** Put a barrier in the token stream that forces the GL to finish its
569 ** work before X can proceed.
570 */
571 _GLX_PUBLIC void
glXWaitGL(void)572 glXWaitGL(void)
573 {
574 struct glx_context *gc = __glXGetCurrentContext();
575
576 if (gc->vtable->wait_gl)
577 gc->vtable->wait_gl(gc);
578 }
579
580 /*
581 ** Put a barrier in the token stream that forces X to finish its
582 ** work before GL can proceed.
583 */
584 _GLX_PUBLIC void
glXWaitX(void)585 glXWaitX(void)
586 {
587 struct glx_context *gc = __glXGetCurrentContext();
588
589 if (gc->vtable->wait_x)
590 gc->vtable->wait_x(gc);
591 }
592
593 _GLX_PUBLIC void
glXUseXFont(Font font,int first,int count,int listBase)594 glXUseXFont(Font font, int first, int count, int listBase)
595 {
596 struct glx_context *gc = __glXGetCurrentContext();
597 xGLXUseXFontReq *req;
598 Display *dpy = gc->currentDpy;
599
600 #ifdef GLX_DIRECT_RENDERING
601 if (gc->isDirect) {
602 DRI_glXUseXFont(gc, font, first, count, listBase);
603 return;
604 }
605 #endif
606
607 /* Flush any pending commands out */
608 __glXFlushRenderBuffer(gc, gc->pc);
609
610 /* Send the glXUseFont request */
611 LockDisplay(dpy);
612 GetReq(GLXUseXFont, req);
613 req->reqType = gc->majorOpcode;
614 req->glxCode = X_GLXUseXFont;
615 req->contextTag = gc->currentContextTag;
616 req->font = font;
617 req->first = first;
618 req->count = count;
619 req->listBase = listBase;
620 UnlockDisplay(dpy);
621 SyncHandle();
622 }
623
624 /************************************************************************/
625
626 /*
627 ** Copy the source context to the destination context using the
628 ** attribute "mask".
629 */
630 _GLX_PUBLIC void
glXCopyContext(Display * dpy,GLXContext source_user,GLXContext dest_user,unsigned long mask)631 glXCopyContext(Display * dpy, GLXContext source_user,
632 GLXContext dest_user, unsigned long mask)
633 {
634 struct glx_context *source = (struct glx_context *) source_user;
635 struct glx_context *dest = (struct glx_context *) dest_user;
636 #ifdef GLX_USE_APPLEGL
637 struct glx_context *gc = __glXGetCurrentContext();
638 int errorcode;
639 bool x11error;
640
641 if(apple_glx_copy_context(gc->driContext, source->driContext, dest->driContext,
642 mask, &errorcode, &x11error)) {
643 __glXSendError(dpy, errorcode, 0, X_GLXCopyContext, x11error);
644 }
645
646 #else
647 xGLXCopyContextReq *req;
648 struct glx_context *gc = __glXGetCurrentContext();
649 GLXContextTag tag;
650 CARD8 opcode;
651
652 opcode = __glXSetupForCommand(dpy);
653 if (!opcode) {
654 return;
655 }
656
657 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
658 if (gc->isDirect) {
659 /* NOT_DONE: This does not work yet */
660 }
661 #endif
662
663 /*
664 ** If the source is the current context, send its tag so that the context
665 ** can be flushed before the copy.
666 */
667 if (source == gc && dpy == gc->currentDpy) {
668 tag = gc->currentContextTag;
669 }
670 else {
671 tag = 0;
672 }
673
674 /* Send the glXCopyContext request */
675 LockDisplay(dpy);
676 GetReq(GLXCopyContext, req);
677 req->reqType = opcode;
678 req->glxCode = X_GLXCopyContext;
679 req->source = source ? source->xid : None;
680 req->dest = dest ? dest->xid : None;
681 req->mask = mask;
682 req->contextTag = tag;
683 UnlockDisplay(dpy);
684 SyncHandle();
685 #endif /* GLX_USE_APPLEGL */
686 }
687
688
689 _GLX_PUBLIC Bool
glXIsDirect(Display * dpy,GLXContext gc_user)690 glXIsDirect(Display * dpy, GLXContext gc_user)
691 {
692 struct glx_context *gc = (struct glx_context *) gc_user;
693
694 /* This is set for us at context creation */
695 return gc ? gc->isDirect : False;
696 }
697
698 _GLX_PUBLIC GLXPixmap
glXCreateGLXPixmap(Display * dpy,XVisualInfo * vis,Pixmap pixmap)699 glXCreateGLXPixmap(Display * dpy, XVisualInfo * vis, Pixmap pixmap)
700 {
701 #ifdef GLX_USE_APPLEGL
702 int screen = vis->screen;
703 struct glx_screen *const psc = GetGLXScreenConfigs(dpy, screen);
704 const struct glx_config *config;
705
706 config = glx_config_find_visual(psc->visuals, vis->visualid);
707
708 if(apple_glx_pixmap_create(dpy, vis->screen, pixmap, config))
709 return None;
710
711 return pixmap;
712 #else
713 xGLXCreateGLXPixmapReq *req;
714 struct glx_drawable *glxDraw;
715 GLXPixmap xid;
716 CARD8 opcode;
717
718 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
719 struct glx_display *const priv = __glXInitialize(dpy);
720
721 if (priv == NULL)
722 return None;
723 #endif
724
725 opcode = __glXSetupForCommand(dpy);
726 if (!opcode) {
727 return None;
728 }
729
730 glxDraw = malloc(sizeof(*glxDraw));
731 if (!glxDraw)
732 return None;
733
734 /* Send the glXCreateGLXPixmap request */
735 LockDisplay(dpy);
736 GetReq(GLXCreateGLXPixmap, req);
737 req->reqType = opcode;
738 req->glxCode = X_GLXCreateGLXPixmap;
739 req->screen = vis->screen;
740 req->visual = vis->visualid;
741 req->pixmap = pixmap;
742 req->glxpixmap = xid = XAllocID(dpy);
743 UnlockDisplay(dpy);
744 SyncHandle();
745
746 if (InitGLXDrawable(dpy, glxDraw, pixmap, req->glxpixmap)) {
747 free(glxDraw);
748 return None;
749 }
750
751 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
752 do {
753 /* FIXME: Maybe delay __DRIdrawable creation until the drawable
754 * is actually bound to a context... */
755
756 __GLXDRIdrawable *pdraw;
757 struct glx_screen *psc;
758 struct glx_config *config;
759
760 psc = priv->screens[vis->screen];
761 if (psc->driScreen == NULL)
762 return xid;
763
764 config = glx_config_find_visual(psc->visuals, vis->visualid);
765 pdraw = psc->driScreen->createDrawable(psc, pixmap, xid, GLX_PIXMAP_BIT, config);
766 if (pdraw == NULL) {
767 fprintf(stderr, "failed to create pixmap\n");
768 xid = None;
769 break;
770 }
771
772 if (__glxHashInsert(priv->drawHash, xid, pdraw)) {
773 (*pdraw->destroyDrawable) (pdraw);
774 xid = None;
775 break;
776 }
777 } while (0);
778
779 if (xid == None) {
780 xGLXDestroyGLXPixmapReq *dreq;
781 LockDisplay(dpy);
782 GetReq(GLXDestroyGLXPixmap, dreq);
783 dreq->reqType = opcode;
784 dreq->glxCode = X_GLXDestroyGLXPixmap;
785 dreq->glxpixmap = xid;
786 UnlockDisplay(dpy);
787 SyncHandle();
788 }
789 #endif
790
791 return xid;
792 #endif
793 }
794
795 /*
796 ** Destroy the named pixmap
797 */
798 _GLX_PUBLIC void
glXDestroyGLXPixmap(Display * dpy,GLXPixmap glxpixmap)799 glXDestroyGLXPixmap(Display * dpy, GLXPixmap glxpixmap)
800 {
801 #ifdef GLX_USE_APPLEGL
802 if(apple_glx_pixmap_destroy(dpy, glxpixmap))
803 __glXSendError(dpy, GLXBadPixmap, glxpixmap, X_GLXDestroyPixmap, false);
804 #else
805 xGLXDestroyGLXPixmapReq *req;
806 CARD8 opcode;
807
808 opcode = __glXSetupForCommand(dpy);
809 if (!opcode) {
810 return;
811 }
812
813 /* Send the glXDestroyGLXPixmap request */
814 LockDisplay(dpy);
815 GetReq(GLXDestroyGLXPixmap, req);
816 req->reqType = opcode;
817 req->glxCode = X_GLXDestroyGLXPixmap;
818 req->glxpixmap = glxpixmap;
819 UnlockDisplay(dpy);
820 SyncHandle();
821
822 DestroyGLXDrawable(dpy, glxpixmap);
823
824 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
825 {
826 struct glx_display *const priv = __glXInitialize(dpy);
827 __GLXDRIdrawable *pdraw = GetGLXDRIDrawable(dpy, glxpixmap);
828
829 if (priv != NULL && pdraw != NULL) {
830 (*pdraw->destroyDrawable) (pdraw);
831 __glxHashDelete(priv->drawHash, glxpixmap);
832 }
833 }
834 #endif
835 #endif /* GLX_USE_APPLEGL */
836 }
837
838 _GLX_PUBLIC void
glXSwapBuffers(Display * dpy,GLXDrawable drawable)839 glXSwapBuffers(Display * dpy, GLXDrawable drawable)
840 {
841 #ifdef GLX_USE_APPLEGL
842 struct glx_context * gc = __glXGetCurrentContext();
843 if(gc != &dummyContext && apple_glx_is_current_drawable(dpy, gc->driContext, drawable)) {
844 apple_glx_swap_buffers(gc->driContext);
845 } else {
846 __glXSendError(dpy, GLXBadCurrentWindow, 0, X_GLXSwapBuffers, false);
847 }
848 #else
849 struct glx_context *gc;
850 GLXContextTag tag;
851 CARD8 opcode;
852 xcb_connection_t *c;
853
854 gc = __glXGetCurrentContext();
855
856 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
857 {
858 __GLXDRIdrawable *pdraw = GetGLXDRIDrawable(dpy, drawable);
859
860 if (pdraw != NULL) {
861 Bool flush = gc != &dummyContext && drawable == gc->currentDrawable;
862
863 pdraw->psc->driScreen->swapBuffers(pdraw, 0, 0, 0, flush);
864 return;
865 }
866 }
867 #endif
868
869 opcode = __glXSetupForCommand(dpy);
870 if (!opcode) {
871 return;
872 }
873
874 /*
875 ** The calling thread may or may not have a current context. If it
876 ** does, send the context tag so the server can do a flush.
877 */
878 if ((gc != &dummyContext) && (dpy == gc->currentDpy) &&
879 ((drawable == gc->currentDrawable)
880 || (drawable == gc->currentReadable))) {
881 tag = gc->currentContextTag;
882 }
883 else {
884 tag = 0;
885 }
886
887 c = XGetXCBConnection(dpy);
888 xcb_glx_swap_buffers(c, tag, drawable);
889 xcb_flush(c);
890 #endif /* GLX_USE_APPLEGL */
891 }
892
893
894 /*
895 ** Return configuration information for the given display, screen and
896 ** visual combination.
897 */
898 _GLX_PUBLIC int
glXGetConfig(Display * dpy,XVisualInfo * vis,int attribute,int * value_return)899 glXGetConfig(Display * dpy, XVisualInfo * vis, int attribute,
900 int *value_return)
901 {
902 struct glx_display *priv;
903 struct glx_screen *psc;
904 struct glx_config *config;
905 int status;
906
907 status = GetGLXPrivScreenConfig(dpy, vis->screen, &priv, &psc);
908 if (status == Success) {
909 config = glx_config_find_visual(psc->visuals, vis->visualid);
910
911 /* Lookup attribute after first finding a match on the visual */
912 if (config != NULL) {
913 return glx_config_get(config, attribute, value_return);
914 }
915
916 status = GLX_BAD_VISUAL;
917 }
918
919 /*
920 ** If we can't find the config for this visual, this visual is not
921 ** supported by the OpenGL implementation on the server.
922 */
923 if ((status == GLX_BAD_VISUAL) && (attribute == GLX_USE_GL)) {
924 *value_return = False;
925 status = Success;
926 }
927
928 return status;
929 }
930
931 /************************************************************************/
932
933 static void
init_fbconfig_for_chooser(struct glx_config * config,GLboolean fbconfig_style_tags)934 init_fbconfig_for_chooser(struct glx_config * config,
935 GLboolean fbconfig_style_tags)
936 {
937 memset(config, 0, sizeof(struct glx_config));
938 config->visualID = (XID) GLX_DONT_CARE;
939 config->visualType = GLX_DONT_CARE;
940
941 /* glXChooseFBConfig specifies different defaults for these properties than
942 * glXChooseVisual.
943 */
944 if (fbconfig_style_tags) {
945 config->doubleBufferMode = GLX_DONT_CARE;
946 config->renderType = GLX_RGBA_BIT;
947 }
948
949 config->drawableType = GLX_WINDOW_BIT;
950 config->visualRating = GLX_DONT_CARE;
951 config->transparentPixel = GLX_NONE;
952 config->transparentRed = GLX_DONT_CARE;
953 config->transparentGreen = GLX_DONT_CARE;
954 config->transparentBlue = GLX_DONT_CARE;
955 config->transparentAlpha = GLX_DONT_CARE;
956 config->transparentIndex = GLX_DONT_CARE;
957
958 config->xRenderable = GLX_DONT_CARE;
959 config->fbconfigID = (GLXFBConfigID) (GLX_DONT_CARE);
960
961 config->swapMethod = GLX_DONT_CARE;
962 config->sRGBCapable = GLX_DONT_CARE;
963 }
964
965 #define MATCH_DONT_CARE( 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_MINIMUM( param ) \
974 do { \
975 if ( ((int) a-> param != (int) GLX_DONT_CARE) \
976 && (a-> param > b-> param) ) { \
977 return False; \
978 } \
979 } while ( 0 )
980
981 #define MATCH_EXACT( param ) \
982 do { \
983 if ( a-> param != b-> param) { \
984 return False; \
985 } \
986 } while ( 0 )
987
988 /* Test that all bits from a are contained in b */
989 #define MATCH_MASK(param) \
990 do { \
991 if ( ((int) a-> param != (int) GLX_DONT_CARE) \
992 && ((a->param & ~b->param) != 0) ) { \
993 return False; \
994 } \
995 } while (0);
996
997 /**
998 * Determine if two GLXFBConfigs are compatible.
999 *
1000 * \param a Application specified config to test.
1001 * \param b Server specified config to test against \c a.
1002 */
1003 static Bool
fbconfigs_compatible(const struct glx_config * const a,const struct glx_config * const b)1004 fbconfigs_compatible(const struct glx_config * const a,
1005 const struct glx_config * const b)
1006 {
1007 MATCH_DONT_CARE(doubleBufferMode);
1008 MATCH_DONT_CARE(visualType);
1009 MATCH_DONT_CARE(visualRating);
1010 MATCH_DONT_CARE(xRenderable);
1011 MATCH_DONT_CARE(fbconfigID);
1012 MATCH_DONT_CARE(swapMethod);
1013
1014 MATCH_MINIMUM(rgbBits);
1015 MATCH_MINIMUM(numAuxBuffers);
1016 MATCH_MINIMUM(redBits);
1017 MATCH_MINIMUM(greenBits);
1018 MATCH_MINIMUM(blueBits);
1019 MATCH_MINIMUM(alphaBits);
1020 MATCH_MINIMUM(depthBits);
1021 MATCH_MINIMUM(stencilBits);
1022 MATCH_MINIMUM(accumRedBits);
1023 MATCH_MINIMUM(accumGreenBits);
1024 MATCH_MINIMUM(accumBlueBits);
1025 MATCH_MINIMUM(accumAlphaBits);
1026 MATCH_MINIMUM(sampleBuffers);
1027 MATCH_MINIMUM(maxPbufferWidth);
1028 MATCH_MINIMUM(maxPbufferHeight);
1029 MATCH_MINIMUM(maxPbufferPixels);
1030 MATCH_MINIMUM(samples);
1031
1032 MATCH_DONT_CARE(stereoMode);
1033 MATCH_EXACT(level);
1034
1035 MATCH_MASK(drawableType);
1036 MATCH_MASK(renderType);
1037 MATCH_DONT_CARE(sRGBCapable);
1038 MATCH_DONT_CARE(floatComponentsNV);
1039
1040 /* There is a bug in a few of the XFree86 DDX drivers. They contain
1041 * visuals with a "transparent type" of 0 when they really mean GLX_NONE.
1042 * Technically speaking, it is a bug in the DDX driver, but there is
1043 * enough of an installed base to work around the problem here. In any
1044 * case, 0 is not a valid value of the transparent type, so we'll treat 0
1045 * from the app as GLX_DONT_CARE. We'll consider GLX_NONE from the app and
1046 * 0 from the server to be a match to maintain backward compatibility with
1047 * the (broken) drivers.
1048 */
1049
1050 if (a->transparentPixel != (int) GLX_DONT_CARE && a->transparentPixel != 0) {
1051 if (a->transparentPixel == GLX_NONE) {
1052 if (b->transparentPixel != GLX_NONE && b->transparentPixel != 0)
1053 return False;
1054 }
1055 else {
1056 MATCH_EXACT(transparentPixel);
1057 }
1058
1059 switch (a->transparentPixel) {
1060 case GLX_TRANSPARENT_RGB:
1061 MATCH_DONT_CARE(transparentRed);
1062 MATCH_DONT_CARE(transparentGreen);
1063 MATCH_DONT_CARE(transparentBlue);
1064 MATCH_DONT_CARE(transparentAlpha);
1065 break;
1066
1067 case GLX_TRANSPARENT_INDEX:
1068 MATCH_DONT_CARE(transparentIndex);
1069 break;
1070
1071 default:
1072 break;
1073 }
1074 }
1075
1076 return True;
1077 }
1078
1079
1080 /* There's some trickly language in the GLX spec about how this is supposed
1081 * to work. Basically, if a given component size is either not specified
1082 * or the requested size is zero, it is supposed to act like PERFER_SMALLER.
1083 * Well, that's really hard to do with the code as-is. This behavior is
1084 * closer to correct, but still not technically right.
1085 */
1086 #define PREFER_LARGER_OR_ZERO(comp) \
1087 do { \
1088 if ( ((*a)-> comp) != ((*b)-> comp) ) { \
1089 if ( ((*a)-> comp) == 0 ) { \
1090 return -1; \
1091 } \
1092 else if ( ((*b)-> comp) == 0 ) { \
1093 return 1; \
1094 } \
1095 else { \
1096 return ((*b)-> comp) - ((*a)-> comp) ; \
1097 } \
1098 } \
1099 } while( 0 )
1100
1101 #define PREFER_LARGER(comp) \
1102 do { \
1103 if ( ((*a)-> comp) != ((*b)-> comp) ) { \
1104 return ((*b)-> comp) - ((*a)-> comp) ; \
1105 } \
1106 } while( 0 )
1107
1108 #define PREFER_SMALLER(comp) \
1109 do { \
1110 if ( ((*a)-> comp) != ((*b)-> comp) ) { \
1111 return ((*a)-> comp) - ((*b)-> comp) ; \
1112 } \
1113 } while( 0 )
1114
1115 /**
1116 * Compare two GLXFBConfigs. This function is intended to be used as the
1117 * compare function passed in to qsort.
1118 *
1119 * \returns If \c a is a "better" config, according to the specification of
1120 * SGIX_fbconfig, a number less than zero is returned. If \c b is
1121 * better, then a number greater than zero is return. If both are
1122 * equal, zero is returned.
1123 * \sa qsort, glXChooseVisual, glXChooseFBConfig, glXChooseFBConfigSGIX
1124 */
1125 static int
fbconfig_compare(struct glx_config ** a,struct glx_config ** b)1126 fbconfig_compare(struct glx_config **a, struct glx_config **b)
1127 {
1128 /* The order of these comparisons must NOT change. It is defined by
1129 * the GLX 1.4 specification.
1130 */
1131
1132 PREFER_SMALLER(visualSelectGroup);
1133
1134 /* The sort order for the visualRating is GLX_NONE, GLX_SLOW, and
1135 * GLX_NON_CONFORMANT_CONFIG. It just so happens that this is the
1136 * numerical sort order of the enums (0x8000, 0x8001, and 0x800D).
1137 */
1138 PREFER_SMALLER(visualRating);
1139
1140 /* This isn't quite right. It is supposed to compare the sum of the
1141 * components the user specifically set minimums for.
1142 */
1143 PREFER_LARGER_OR_ZERO(redBits);
1144 PREFER_LARGER_OR_ZERO(greenBits);
1145 PREFER_LARGER_OR_ZERO(blueBits);
1146 PREFER_LARGER_OR_ZERO(alphaBits);
1147
1148 PREFER_SMALLER(rgbBits);
1149
1150 if (((*a)->doubleBufferMode != (*b)->doubleBufferMode)) {
1151 /* Prefer single-buffer.
1152 */
1153 return (!(*a)->doubleBufferMode) ? -1 : 1;
1154 }
1155
1156 PREFER_SMALLER(numAuxBuffers);
1157
1158 PREFER_SMALLER(sampleBuffers);
1159 PREFER_SMALLER(samples);
1160
1161 PREFER_LARGER_OR_ZERO(depthBits);
1162 PREFER_SMALLER(stencilBits);
1163
1164 /* This isn't quite right. It is supposed to compare the sum of the
1165 * components the user specifically set minimums for.
1166 */
1167 PREFER_LARGER_OR_ZERO(accumRedBits);
1168 PREFER_LARGER_OR_ZERO(accumGreenBits);
1169 PREFER_LARGER_OR_ZERO(accumBlueBits);
1170 PREFER_LARGER_OR_ZERO(accumAlphaBits);
1171
1172 PREFER_SMALLER(visualType);
1173
1174 /* None of the pbuffer or fbconfig specs say that this comparison needs
1175 * to happen at all, but it seems like it should.
1176 */
1177 PREFER_LARGER(maxPbufferWidth);
1178 PREFER_LARGER(maxPbufferHeight);
1179 PREFER_LARGER(maxPbufferPixels);
1180
1181 return 0;
1182 }
1183
1184
1185 /**
1186 * Selects and sorts a subset of the supplied configs based on the attributes.
1187 * This function forms to basis of \c glXChooseFBConfig and
1188 * \c glXChooseFBConfigSGIX.
1189 *
1190 * \param configs Array of pointers to possible configs. The elements of
1191 * this array that do not meet the criteria will be set to
1192 * NULL. The remaining elements will be sorted according to
1193 * the various visual / FBConfig selection rules.
1194 * \param num_configs Number of elements in the \c configs array.
1195 * \param attribList Attributes used select from \c configs. This array is
1196 * terminated by a \c None tag. The array is of the form
1197 * expected by \c glXChooseFBConfig (where every tag has a
1198 * value).
1199 * \returns The number of valid elements left in \c configs.
1200 *
1201 * \sa glXChooseFBConfig, glXChooseFBConfigSGIX
1202 */
1203 static int
choose_fbconfig(struct glx_config ** configs,int num_configs,const int * attribList)1204 choose_fbconfig(struct glx_config ** configs, int num_configs,
1205 const int *attribList)
1206 {
1207 struct glx_config test_config;
1208 int base;
1209 int i;
1210
1211 /* This is a fairly direct implementation of the selection method
1212 * described by GLX_SGIX_fbconfig. Start by culling out all the
1213 * configs that are not compatible with the selected parameter
1214 * list.
1215 */
1216
1217 init_fbconfig_for_chooser(&test_config, GL_TRUE);
1218 __glXInitializeVisualConfigFromTags(&test_config, 512,
1219 (const INT32 *) attribList,
1220 GL_TRUE, GL_TRUE);
1221
1222 base = 0;
1223 for (i = 0; i < num_configs; i++) {
1224 if (fbconfigs_compatible(&test_config, configs[i])) {
1225 configs[base] = configs[i];
1226 base++;
1227 }
1228 }
1229
1230 if (base == 0) {
1231 return 0;
1232 }
1233
1234 if (base < num_configs) {
1235 (void) memset(&configs[base], 0, sizeof(void *) * (num_configs - base));
1236 }
1237
1238 /* After the incompatible configs are removed, the resulting
1239 * list is sorted according to the rules set out in the various
1240 * specifications.
1241 */
1242
1243 qsort(configs, base, sizeof(struct glx_config *),
1244 (int (*)(const void *, const void *)) fbconfig_compare);
1245 return base;
1246 }
1247
1248
1249
1250
1251 /*
1252 ** Return the visual that best matches the template. Return None if no
1253 ** visual matches the template.
1254 */
1255 _GLX_PUBLIC XVisualInfo *
glXChooseVisual(Display * dpy,int screen,int * attribList)1256 glXChooseVisual(Display * dpy, int screen, int *attribList)
1257 {
1258 XVisualInfo *visualList = NULL;
1259 struct glx_display *priv;
1260 struct glx_screen *psc;
1261 struct glx_config test_config;
1262 struct glx_config *config;
1263 struct glx_config *best_config = NULL;
1264
1265 /*
1266 ** Get a list of all visuals, return if list is empty
1267 */
1268 if (GetGLXPrivScreenConfig(dpy, screen, &priv, &psc) != Success) {
1269 return None;
1270 }
1271
1272
1273 /*
1274 ** Build a template from the defaults and the attribute list
1275 ** Free visual list and return if an unexpected token is encountered
1276 */
1277 init_fbconfig_for_chooser(&test_config, GL_FALSE);
1278 __glXInitializeVisualConfigFromTags(&test_config, 512,
1279 (const INT32 *) attribList,
1280 GL_TRUE, GL_FALSE);
1281
1282 /*
1283 ** Eliminate visuals that don't meet minimum requirements
1284 ** Compute a score for those that do
1285 ** Remember which visual, if any, got the highest score
1286 ** If no visual is acceptable, return None
1287 ** Otherwise, create an XVisualInfo list with just the selected X visual
1288 ** and return this.
1289 */
1290 for (config = psc->visuals; config != NULL; config = config->next) {
1291 if (fbconfigs_compatible(&test_config, config)
1292 && ((best_config == NULL) ||
1293 (fbconfig_compare (&config, &best_config) < 0))) {
1294 XVisualInfo visualTemplate;
1295 XVisualInfo *newList;
1296 int i;
1297
1298 visualTemplate.screen = screen;
1299 visualTemplate.visualid = config->visualID;
1300 newList = XGetVisualInfo(dpy, VisualScreenMask | VisualIDMask,
1301 &visualTemplate, &i);
1302
1303 if (newList) {
1304 free(visualList);
1305 visualList = newList;
1306 best_config = config;
1307 }
1308 }
1309 }
1310
1311 #ifdef GLX_USE_APPLEGL
1312 if(visualList && env_var_as_boolean("LIBGL_DUMP_VISUALID", false)) {
1313 printf("visualid 0x%lx\n", visualList[0].visualid);
1314 }
1315 #endif
1316
1317 return visualList;
1318 }
1319
1320
1321 _GLX_PUBLIC const char *
glXQueryExtensionsString(Display * dpy,int screen)1322 glXQueryExtensionsString(Display * dpy, int screen)
1323 {
1324 struct glx_screen *psc;
1325 struct glx_display *priv;
1326 int is_direct_capable = GL_FALSE;
1327
1328 if (GetGLXPrivScreenConfig(dpy, screen, &priv, &psc) != Success) {
1329 return NULL;
1330 }
1331
1332 if (!psc->effectiveGLXexts) {
1333 if (!psc->serverGLXexts) {
1334 psc->serverGLXexts =
1335 __glXQueryServerString(dpy, screen, GLX_EXTENSIONS);
1336 }
1337
1338 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
1339 is_direct_capable = (psc->driScreen != NULL);
1340 #endif
1341 __glXCalculateUsableExtensions(psc, is_direct_capable);
1342 }
1343
1344 return psc->effectiveGLXexts;
1345 }
1346
1347 _GLX_PUBLIC const char *
glXGetClientString(Display * dpy,int name)1348 glXGetClientString(Display * dpy, int name)
1349 {
1350 (void) dpy;
1351
1352 switch (name) {
1353 case GLX_VENDOR:
1354 return (__glXGLXClientVendorName);
1355 case GLX_VERSION:
1356 return (__glXGLXClientVersion);
1357 case GLX_EXTENSIONS:
1358 return (__glXGetClientExtensions(dpy));
1359 default:
1360 return NULL;
1361 }
1362 }
1363
1364 _GLX_PUBLIC const char *
glXQueryServerString(Display * dpy,int screen,int name)1365 glXQueryServerString(Display * dpy, int screen, int name)
1366 {
1367 struct glx_screen *psc;
1368 struct glx_display *priv;
1369 const char **str;
1370
1371 if (GetGLXPrivScreenConfig(dpy, screen, &priv, &psc) != Success) {
1372 return NULL;
1373 }
1374
1375 switch (name) {
1376 case GLX_VENDOR:
1377 str = &psc->serverGLXvendor;
1378 break;
1379 case GLX_VERSION:
1380 str = &psc->serverGLXversion;
1381 break;
1382 case GLX_EXTENSIONS:
1383 str = &psc->serverGLXexts;
1384 break;
1385 default:
1386 return NULL;
1387 }
1388
1389 if (*str == NULL) {
1390 *str = __glXQueryServerString(dpy, screen, name);
1391 }
1392
1393 return *str;
1394 }
1395
1396
1397 /*
1398 ** EXT_import_context
1399 */
1400
1401 _GLX_PUBLIC Display *
glXGetCurrentDisplay(void)1402 glXGetCurrentDisplay(void)
1403 {
1404 struct glx_context *gc = __glXGetCurrentContext();
1405 if (gc == &dummyContext)
1406 return NULL;
1407 return gc->currentDpy;
1408 }
1409
1410 _GLX_PUBLIC
1411 GLX_ALIAS(Display *, glXGetCurrentDisplayEXT, (void), (),
1412 glXGetCurrentDisplay)
1413
1414 #ifndef GLX_USE_APPLEGL
1415 _GLX_PUBLIC GLXContext
glXImportContextEXT(Display * dpy,GLXContextID contextID)1416 glXImportContextEXT(Display *dpy, GLXContextID contextID)
1417 {
1418 struct glx_display *priv = __glXInitialize(dpy);
1419 struct glx_screen *psc = NULL;
1420 xGLXQueryContextReply reply;
1421 CARD8 opcode;
1422 struct glx_context *ctx;
1423 int i, renderType = GLX_RGBA_TYPE; /* By default, assume RGBA context */
1424 XID share = None;
1425 struct glx_config *mode = NULL;
1426 uint32_t fbconfigID = 0;
1427 uint32_t visualID = 0;
1428 uint32_t screen = 0;
1429 Bool got_screen = False;
1430
1431 if (priv == NULL)
1432 return NULL;
1433
1434 /* The GLX_EXT_import_context spec says:
1435 *
1436 * "If <contextID> does not refer to a valid context, then a BadContext
1437 * error is generated; if <contextID> refers to direct rendering
1438 * context then no error is generated but glXImportContextEXT returns
1439 * NULL."
1440 *
1441 * We can handle both conditions with the __glXIsDirect call, because
1442 * passing None to a GLXIsDirect request will throw GLXBadContext.
1443 */
1444 if (__glXIsDirect(dpy, contextID, NULL))
1445 return NULL;
1446
1447 opcode = __glXSetupForCommand(dpy);
1448 if (!opcode)
1449 return 0;
1450
1451 /* Send the glXQueryContextInfoEXT request */
1452 LockDisplay(dpy);
1453
1454 if (priv->minorVersion >= 3) {
1455 xGLXQueryContextReq *req;
1456
1457 GetReq(GLXQueryContext, req);
1458
1459 req->reqType = opcode;
1460 req->glxCode = X_GLXQueryContext;
1461 req->context = contextID;
1462 }
1463 else {
1464 xGLXVendorPrivateReq *vpreq;
1465 xGLXQueryContextInfoEXTReq *req;
1466
1467 GetReqExtra(GLXVendorPrivate,
1468 sz_xGLXQueryContextInfoEXTReq - sz_xGLXVendorPrivateReq,
1469 vpreq);
1470 req = (xGLXQueryContextInfoEXTReq *) vpreq;
1471 req->reqType = opcode;
1472 req->glxCode = X_GLXVendorPrivateWithReply;
1473 req->vendorCode = X_GLXvop_QueryContextInfoEXT;
1474 req->context = contextID;
1475 }
1476
1477 if (_XReply(dpy, (xReply *) & reply, 0, False) &&
1478 reply.n < (INT32_MAX / 2)) {
1479
1480 for (i = 0; i < reply.n; i++) {
1481 int prop[2];
1482
1483 _XRead(dpy, (char *)prop, sizeof(prop));
1484 switch (prop[0]) {
1485 case GLX_SCREEN:
1486 screen = prop[1];
1487 got_screen = True;
1488 break;
1489 case GLX_SHARE_CONTEXT_EXT:
1490 share = prop[1];
1491 break;
1492 case GLX_VISUAL_ID_EXT:
1493 visualID = prop[1];
1494 break;
1495 case GLX_FBCONFIG_ID:
1496 fbconfigID = prop[1];
1497 break;
1498 case GLX_RENDER_TYPE:
1499 renderType = prop[1];
1500 break;
1501 }
1502 }
1503 }
1504 UnlockDisplay(dpy);
1505 SyncHandle();
1506
1507 if (!got_screen)
1508 return NULL;
1509
1510 psc = GetGLXScreenConfigs(dpy, screen);
1511 if (psc == NULL)
1512 return NULL;
1513
1514 if (fbconfigID != 0) {
1515 mode = glx_config_find_fbconfig(psc->configs, fbconfigID);
1516 } else if (visualID != 0) {
1517 mode = glx_config_find_visual(psc->visuals, visualID);
1518 }
1519
1520 if (mode == NULL)
1521 return NULL;
1522
1523 ctx = indirect_create_context(psc, mode, NULL, renderType);
1524 if (ctx == NULL)
1525 return NULL;
1526
1527 ctx->xid = contextID;
1528 ctx->imported = GL_TRUE;
1529 ctx->share_xid = share;
1530
1531 return (GLXContext) ctx;
1532 }
1533
1534 #endif
1535
1536 _GLX_PUBLIC int
glXQueryContext(Display * dpy,GLXContext ctx_user,int attribute,int * value)1537 glXQueryContext(Display * dpy, GLXContext ctx_user, int attribute, int *value)
1538 {
1539 struct glx_context *ctx = (struct glx_context *) ctx_user;
1540
1541 switch (attribute) {
1542 case GLX_SHARE_CONTEXT_EXT:
1543 *value = ctx->share_xid;
1544 break;
1545 case GLX_VISUAL_ID_EXT:
1546 *value = ctx->config ? ctx->config->visualID : None;
1547 break;
1548 case GLX_SCREEN:
1549 *value = ctx->screen;
1550 break;
1551 case GLX_FBCONFIG_ID:
1552 *value = ctx->config ? ctx->config->fbconfigID : None;
1553 break;
1554 case GLX_RENDER_TYPE:
1555 *value = ctx->renderType;
1556 break;
1557 default:
1558 return GLX_BAD_ATTRIBUTE;
1559 }
1560 return Success;
1561 }
1562
1563 _GLX_PUBLIC
1564 GLX_ALIAS(int, glXQueryContextInfoEXT,
1565 (Display * dpy, GLXContext ctx, int attribute, int *value),
1566 (dpy, ctx, attribute, value), glXQueryContext)
1567
glXGetContextIDEXT(const GLXContext ctx_user)1568 _GLX_PUBLIC GLXContextID glXGetContextIDEXT(const GLXContext ctx_user)
1569 {
1570 struct glx_context *ctx = (struct glx_context *) ctx_user;
1571
1572 return (ctx == NULL) ? None : ctx->xid;
1573 }
1574
1575 _GLX_PUBLIC void
glXFreeContextEXT(Display * dpy,GLXContext ctx)1576 glXFreeContextEXT(Display *dpy, GLXContext ctx)
1577 {
1578 struct glx_context *gc = (struct glx_context *) ctx;
1579
1580 if (gc == NULL || gc->xid == None)
1581 return;
1582
1583 /* The GLX_EXT_import_context spec says:
1584 *
1585 * "glXFreeContext does not free the server-side context information or
1586 * the XID associated with the server-side context."
1587 *
1588 * Don't send any protocol. Just destroy the client-side tracking of the
1589 * context. Also, only release the context structure if it's not current.
1590 */
1591 __glXLock();
1592 if (gc->currentDpy) {
1593 gc->xid = None;
1594 } else {
1595 gc->vtable->destroy(gc);
1596 }
1597 __glXUnlock();
1598 }
1599
1600 _GLX_PUBLIC GLXFBConfig *
glXChooseFBConfig(Display * dpy,int screen,const int * attribList,int * nitems)1601 glXChooseFBConfig(Display * dpy, int screen,
1602 const int *attribList, int *nitems)
1603 {
1604 struct glx_config **config_list;
1605 int list_size;
1606
1607
1608 config_list = (struct glx_config **)
1609 glXGetFBConfigs(dpy, screen, &list_size);
1610
1611 if ((config_list != NULL) && (list_size > 0) && (attribList != NULL)) {
1612 list_size = choose_fbconfig(config_list, list_size, attribList);
1613 if (list_size == 0) {
1614 free(config_list);
1615 config_list = NULL;
1616 }
1617 }
1618
1619 *nitems = list_size;
1620 return (GLXFBConfig *) config_list;
1621 }
1622
1623
1624 _GLX_PUBLIC GLXContext
glXCreateNewContext(Display * dpy,GLXFBConfig fbconfig,int renderType,GLXContext shareList,Bool allowDirect)1625 glXCreateNewContext(Display * dpy, GLXFBConfig fbconfig,
1626 int renderType, GLXContext shareList, Bool allowDirect)
1627 {
1628 struct glx_config *config = (struct glx_config *) fbconfig;
1629 struct glx_config **config_list;
1630 int list_size;
1631 unsigned i;
1632
1633 if (!config) {
1634 __glXSendError(dpy, GLXBadFBConfig, 0, X_GLXCreateNewContext, false);
1635 return NULL;
1636 }
1637
1638 config_list = (struct glx_config **)
1639 glXGetFBConfigs(dpy, config->screen, &list_size);
1640
1641 for (i = 0; i < list_size; i++) {
1642 if (config_list[i] == config)
1643 break;
1644 }
1645 free(config_list);
1646
1647 if (i == list_size) {
1648 __glXSendError(dpy, GLXBadFBConfig, 0, X_GLXCreateNewContext, false);
1649 return NULL;
1650 }
1651
1652 return CreateContext(dpy, config->fbconfigID, config, shareList,
1653 allowDirect, X_GLXCreateNewContext, renderType,
1654 config->screen);
1655 }
1656
1657
1658 _GLX_PUBLIC GLXDrawable
glXGetCurrentReadDrawable(void)1659 glXGetCurrentReadDrawable(void)
1660 {
1661 struct glx_context *gc = __glXGetCurrentContext();
1662
1663 return gc->currentReadable;
1664 }
1665
1666
1667 _GLX_PUBLIC GLXFBConfig *
glXGetFBConfigs(Display * dpy,int screen,int * nelements)1668 glXGetFBConfigs(Display * dpy, int screen, int *nelements)
1669 {
1670 struct glx_display *priv = __glXInitialize(dpy);
1671 struct glx_config **config_list = NULL;
1672 struct glx_config *config;
1673 unsigned num_configs = 0;
1674 int i;
1675
1676 *nelements = 0;
1677 if (priv && (priv->screens != NULL)
1678 && (screen >= 0) && (screen < ScreenCount(dpy))
1679 && (priv->screens[screen]->configs != NULL)
1680 && (priv->screens[screen]->configs->fbconfigID
1681 != (int) GLX_DONT_CARE)) {
1682
1683 for (config = priv->screens[screen]->configs; config != NULL;
1684 config = config->next) {
1685 if (config->fbconfigID != (int) GLX_DONT_CARE) {
1686 num_configs++;
1687 }
1688 }
1689
1690 config_list = malloc(num_configs * sizeof *config_list);
1691 if (config_list != NULL) {
1692 *nelements = num_configs;
1693 i = 0;
1694 for (config = priv->screens[screen]->configs; config != NULL;
1695 config = config->next) {
1696 if (config->fbconfigID != (int) GLX_DONT_CARE) {
1697 config_list[i] = config;
1698 i++;
1699 }
1700 }
1701 }
1702 }
1703
1704 return (GLXFBConfig *) config_list;
1705 }
1706
1707
1708 _GLX_PUBLIC int
glXGetFBConfigAttrib(Display * dpy,GLXFBConfig fbconfig,int attribute,int * value)1709 glXGetFBConfigAttrib(Display * dpy, GLXFBConfig fbconfig,
1710 int attribute, int *value)
1711 {
1712 struct glx_config *config = ValidateGLXFBConfig(dpy, fbconfig);
1713
1714 if (config == NULL)
1715 return GLXBadFBConfig;
1716
1717 return glx_config_get(config, attribute, value);
1718 }
1719
1720
1721 _GLX_PUBLIC XVisualInfo *
glXGetVisualFromFBConfig(Display * dpy,GLXFBConfig fbconfig)1722 glXGetVisualFromFBConfig(Display * dpy, GLXFBConfig fbconfig)
1723 {
1724 XVisualInfo visualTemplate;
1725 struct glx_config *config = (struct glx_config *) fbconfig;
1726 int count;
1727
1728 if (!config)
1729 return NULL;
1730
1731 /*
1732 ** Get a list of all visuals, return if list is empty
1733 */
1734 visualTemplate.visualid = config->visualID;
1735 return XGetVisualInfo(dpy, VisualIDMask, &visualTemplate, &count);
1736 }
1737
1738 #ifndef GLX_USE_APPLEGL
1739 /*
1740 ** GLX_SGI_swap_control
1741 */
1742 _X_HIDDEN int
glXSwapIntervalSGI(int interval)1743 glXSwapIntervalSGI(int interval)
1744 {
1745 xGLXVendorPrivateReq *req;
1746 struct glx_context *gc = __glXGetCurrentContext();
1747 #ifdef GLX_DIRECT_RENDERING
1748 struct glx_screen *psc = gc->psc;
1749 #endif
1750 Display *dpy;
1751 CARD32 *interval_ptr;
1752 CARD8 opcode;
1753
1754 if (gc == &dummyContext) {
1755 return GLX_BAD_CONTEXT;
1756 }
1757
1758 if (interval <= 0) {
1759 return GLX_BAD_VALUE;
1760 }
1761
1762 #ifdef GLX_DIRECT_RENDERING
1763 if (gc->isDirect && psc && psc->driScreen &&
1764 psc->driScreen->setSwapInterval) {
1765 __GLXDRIdrawable *pdraw =
1766 GetGLXDRIDrawable(gc->currentDpy, gc->currentDrawable);
1767 /* Simply ignore the command if the GLX drawable has been destroyed but
1768 * the context is still bound.
1769 */
1770 if (pdraw)
1771 psc->driScreen->setSwapInterval(pdraw, interval);
1772 return 0;
1773 }
1774 #endif
1775
1776 dpy = gc->currentDpy;
1777 opcode = __glXSetupForCommand(dpy);
1778 if (!opcode) {
1779 return 0;
1780 }
1781
1782 /* Send the glXSwapIntervalSGI request */
1783 LockDisplay(dpy);
1784 GetReqExtra(GLXVendorPrivate, sizeof(CARD32), req);
1785 req->reqType = opcode;
1786 req->glxCode = X_GLXVendorPrivate;
1787 req->vendorCode = X_GLXvop_SwapIntervalSGI;
1788 req->contextTag = gc->currentContextTag;
1789
1790 interval_ptr = (CARD32 *) (req + 1);
1791 *interval_ptr = interval;
1792
1793 UnlockDisplay(dpy);
1794 SyncHandle();
1795 XFlush(dpy);
1796
1797 return 0;
1798 }
1799
1800
1801 /*
1802 ** GLX_MESA_swap_control
1803 */
1804 _X_HIDDEN int
glXSwapIntervalMESA(unsigned int interval)1805 glXSwapIntervalMESA(unsigned int interval)
1806 {
1807 #ifdef GLX_DIRECT_RENDERING
1808 struct glx_context *gc = __glXGetCurrentContext();
1809
1810 if (interval > INT_MAX)
1811 return GLX_BAD_VALUE;
1812
1813 if (gc != &dummyContext && gc->isDirect) {
1814 struct glx_screen *psc = gc->psc;
1815 if (psc && psc->driScreen && psc->driScreen->setSwapInterval) {
1816 __GLXDRIdrawable *pdraw =
1817 GetGLXDRIDrawable(gc->currentDpy, gc->currentDrawable);
1818
1819 /* Simply ignore the command if the GLX drawable has been destroyed but
1820 * the context is still bound.
1821 */
1822 if (!pdraw)
1823 return 0;
1824
1825 return psc->driScreen->setSwapInterval(pdraw, interval);
1826 }
1827 }
1828 #endif
1829
1830 return GLX_BAD_CONTEXT;
1831 }
1832
1833
1834 _X_HIDDEN int
glXGetSwapIntervalMESA(void)1835 glXGetSwapIntervalMESA(void)
1836 {
1837 #ifdef GLX_DIRECT_RENDERING
1838 struct glx_context *gc = __glXGetCurrentContext();
1839
1840 if (gc != &dummyContext && gc->isDirect) {
1841 struct glx_screen *psc = gc->psc;
1842 if (psc && psc->driScreen && psc->driScreen->getSwapInterval) {
1843 __GLXDRIdrawable *pdraw =
1844 GetGLXDRIDrawable(gc->currentDpy, gc->currentDrawable);
1845 if (pdraw)
1846 return psc->driScreen->getSwapInterval(pdraw);
1847 }
1848 }
1849 #endif
1850
1851 return 0;
1852 }
1853
1854
1855 /*
1856 ** GLX_EXT_swap_control
1857 */
1858 _X_HIDDEN void
glXSwapIntervalEXT(Display * dpy,GLXDrawable drawable,int interval)1859 glXSwapIntervalEXT(Display *dpy, GLXDrawable drawable, int interval)
1860 {
1861 #ifdef GLX_DIRECT_RENDERING
1862 __GLXDRIdrawable *pdraw = GetGLXDRIDrawable(dpy, drawable);
1863
1864 /*
1865 * Strictly, this should throw an error if drawable is not a Window or
1866 * GLXWindow. We don't actually track that, so, oh well.
1867 */
1868 if (!pdraw) {
1869 __glXSendError(dpy, BadWindow, drawable, 0, True);
1870 return;
1871 }
1872
1873 if (interval < 0 &&
1874 !__glXExtensionBitIsEnabled(pdraw->psc, EXT_swap_control_tear_bit)) {
1875 __glXSendError(dpy, BadValue, interval, 0, True);
1876 return;
1877 }
1878 if (pdraw->psc->driScreen->setSwapInterval)
1879 pdraw->psc->driScreen->setSwapInterval(pdraw, interval);
1880 #endif
1881 }
1882
1883
1884 /*
1885 ** GLX_SGI_video_sync
1886 */
1887 _X_HIDDEN int
glXGetVideoSyncSGI(unsigned int * count)1888 glXGetVideoSyncSGI(unsigned int *count)
1889 {
1890 #ifdef GLX_DIRECT_RENDERING
1891 int64_t ust, msc, sbc;
1892 int ret;
1893 struct glx_context *gc = __glXGetCurrentContext();
1894 struct glx_screen *psc = gc->psc;
1895 __GLXDRIdrawable *pdraw;
1896
1897 if (gc == &dummyContext)
1898 return GLX_BAD_CONTEXT;
1899
1900 if (!gc->isDirect)
1901 return GLX_BAD_CONTEXT;
1902
1903 if (!gc->currentDrawable)
1904 return GLX_BAD_CONTEXT;
1905
1906 pdraw = GetGLXDRIDrawable(gc->currentDpy, gc->currentDrawable);
1907
1908 /* FIXME: Looking at the GLX_SGI_video_sync spec in the extension registry,
1909 * FIXME: there should be a GLX encoding for this call. I can find no
1910 * FIXME: documentation for the GLX encoding.
1911 */
1912 if (psc && psc->driScreen && psc->driScreen->getDrawableMSC) {
1913 ret = psc->driScreen->getDrawableMSC(psc, pdraw, &ust, &msc, &sbc);
1914 *count = (unsigned) msc;
1915 return (ret == True) ? 0 : GLX_BAD_CONTEXT;
1916 }
1917 #endif
1918
1919 return GLX_BAD_CONTEXT;
1920 }
1921
1922 _X_HIDDEN int
glXWaitVideoSyncSGI(int divisor,int remainder,unsigned int * count)1923 glXWaitVideoSyncSGI(int divisor, int remainder, unsigned int *count)
1924 {
1925 struct glx_context *gc = __glXGetCurrentContext();
1926 #ifdef GLX_DIRECT_RENDERING
1927 struct glx_screen *psc = gc->psc;
1928 __GLXDRIdrawable *pdraw;
1929 int64_t ust, msc, sbc;
1930 int ret;
1931 #endif
1932
1933 if (divisor <= 0 || remainder < 0)
1934 return GLX_BAD_VALUE;
1935
1936 if (gc == &dummyContext)
1937 return GLX_BAD_CONTEXT;
1938
1939 #ifdef GLX_DIRECT_RENDERING
1940 if (!gc->isDirect)
1941 return GLX_BAD_CONTEXT;
1942
1943 if (!gc->currentDrawable)
1944 return GLX_BAD_CONTEXT;
1945
1946 pdraw = GetGLXDRIDrawable(gc->currentDpy, gc->currentDrawable);
1947
1948 if (psc && psc->driScreen && psc->driScreen->waitForMSC) {
1949 ret = psc->driScreen->waitForMSC(pdraw, 0, divisor, remainder, &ust, &msc,
1950 &sbc);
1951 *count = (unsigned) msc;
1952 return (ret == True) ? 0 : GLX_BAD_CONTEXT;
1953 }
1954 #endif
1955
1956 return GLX_BAD_CONTEXT;
1957 }
1958
1959 #endif /* GLX_USE_APPLEGL */
1960
1961 /*
1962 ** GLX_SGIX_fbconfig
1963 ** Many of these functions are aliased to GLX 1.3 entry points in the
1964 ** GLX_functions table.
1965 */
1966
1967 _GLX_PUBLIC
1968 GLX_ALIAS(int, glXGetFBConfigAttribSGIX,
1969 (Display * dpy, GLXFBConfigSGIX config, int attribute, int *value),
1970 (dpy, config, attribute, value), glXGetFBConfigAttrib)
1971
1972 _GLX_PUBLIC GLX_ALIAS(GLXFBConfigSGIX *, glXChooseFBConfigSGIX,
1973 (Display * dpy, int screen, int *attrib_list,
1974 int *nelements), (dpy, screen, attrib_list, nelements),
1975 glXChooseFBConfig)
1976
1977 _GLX_PUBLIC GLX_ALIAS(XVisualInfo *, glXGetVisualFromFBConfigSGIX,
1978 (Display * dpy, GLXFBConfigSGIX config),
1979 (dpy, config), glXGetVisualFromFBConfig)
1980
1981 _GLX_PUBLIC GLXPixmap
glXCreateGLXPixmapWithConfigSGIX(Display * dpy,GLXFBConfigSGIX fbconfig,Pixmap pixmap)1982 glXCreateGLXPixmapWithConfigSGIX(Display * dpy,
1983 GLXFBConfigSGIX fbconfig,
1984 Pixmap pixmap)
1985 {
1986 #ifndef GLX_USE_APPLEGL
1987 xGLXVendorPrivateWithReplyReq *vpreq;
1988 xGLXCreateGLXPixmapWithConfigSGIXReq *req;
1989 GLXPixmap xid = None;
1990 CARD8 opcode;
1991 struct glx_screen *psc;
1992 #endif
1993 struct glx_config *config = (struct glx_config *) fbconfig;
1994
1995
1996 if ((dpy == NULL) || (config == NULL)) {
1997 return None;
1998 }
1999 #ifdef GLX_USE_APPLEGL
2000 if(apple_glx_pixmap_create(dpy, config->screen, pixmap, config))
2001 return None;
2002 return pixmap;
2003 #else
2004
2005 psc = GetGLXScreenConfigs(dpy, config->screen);
2006 if ((psc != NULL)
2007 && __glXExtensionBitIsEnabled(psc, SGIX_fbconfig_bit)) {
2008 opcode = __glXSetupForCommand(dpy);
2009 if (!opcode) {
2010 return None;
2011 }
2012
2013 /* Send the glXCreateGLXPixmapWithConfigSGIX request */
2014 LockDisplay(dpy);
2015 GetReqExtra(GLXVendorPrivateWithReply,
2016 sz_xGLXCreateGLXPixmapWithConfigSGIXReq -
2017 sz_xGLXVendorPrivateWithReplyReq, vpreq);
2018 req = (xGLXCreateGLXPixmapWithConfigSGIXReq *) vpreq;
2019 req->reqType = opcode;
2020 req->glxCode = X_GLXVendorPrivateWithReply;
2021 req->vendorCode = X_GLXvop_CreateGLXPixmapWithConfigSGIX;
2022 req->screen = config->screen;
2023 req->fbconfig = config->fbconfigID;
2024 req->pixmap = pixmap;
2025 req->glxpixmap = xid = XAllocID(dpy);
2026 UnlockDisplay(dpy);
2027 SyncHandle();
2028 }
2029
2030 return xid;
2031 #endif
2032 }
2033
2034 _GLX_PUBLIC GLXContext
glXCreateContextWithConfigSGIX(Display * dpy,GLXFBConfigSGIX fbconfig,int renderType,GLXContext shareList,Bool allowDirect)2035 glXCreateContextWithConfigSGIX(Display * dpy,
2036 GLXFBConfigSGIX fbconfig, int renderType,
2037 GLXContext shareList, Bool allowDirect)
2038 {
2039 GLXContext gc = NULL;
2040 struct glx_config *config = (struct glx_config *) fbconfig;
2041 struct glx_screen *psc;
2042
2043
2044 if ((dpy == NULL) || (config == NULL)) {
2045 return None;
2046 }
2047
2048 psc = GetGLXScreenConfigs(dpy, config->screen);
2049 if ((psc != NULL)
2050 && __glXExtensionBitIsEnabled(psc, SGIX_fbconfig_bit)) {
2051 gc = CreateContext(dpy, config->fbconfigID, config, shareList,
2052 allowDirect,
2053 X_GLXvop_CreateContextWithConfigSGIX, renderType,
2054 config->screen);
2055 }
2056
2057 return gc;
2058 }
2059
2060
2061 _GLX_PUBLIC GLXFBConfigSGIX
glXGetFBConfigFromVisualSGIX(Display * dpy,XVisualInfo * vis)2062 glXGetFBConfigFromVisualSGIX(Display * dpy, XVisualInfo * vis)
2063 {
2064 struct glx_display *priv;
2065 struct glx_screen *psc = NULL;
2066
2067 if ((GetGLXPrivScreenConfig(dpy, vis->screen, &priv, &psc) == Success)
2068 && __glXExtensionBitIsEnabled(psc, SGIX_fbconfig_bit)
2069 && (psc->configs->fbconfigID != (int) GLX_DONT_CARE)) {
2070 return (GLXFBConfigSGIX) glx_config_find_visual(psc->configs,
2071 vis->visualid);
2072 }
2073
2074 return NULL;
2075 }
2076
2077 #ifndef GLX_USE_APPLEGL
2078 /*
2079 ** GLX_OML_sync_control
2080 */
2081 _X_HIDDEN Bool
glXGetSyncValuesOML(Display * dpy,GLXDrawable drawable,int64_t * ust,int64_t * msc,int64_t * sbc)2082 glXGetSyncValuesOML(Display *dpy, GLXDrawable drawable,
2083 int64_t *ust, int64_t *msc, int64_t *sbc)
2084 {
2085 struct glx_display * const priv = __glXInitialize(dpy);
2086 #ifdef GLX_DIRECT_RENDERING
2087 int ret;
2088 __GLXDRIdrawable *pdraw;
2089 struct glx_screen *psc;
2090 #endif
2091
2092 if (!priv)
2093 return False;
2094
2095 #ifdef GLX_DIRECT_RENDERING
2096 pdraw = GetGLXDRIDrawable(dpy, drawable);
2097 psc = pdraw ? pdraw->psc : NULL;
2098 if (pdraw && psc->driScreen->getDrawableMSC) {
2099 ret = psc->driScreen->getDrawableMSC(psc, pdraw, ust, msc, sbc);
2100 return ret;
2101 }
2102 #endif
2103
2104 return False;
2105 }
2106
2107 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
2108 _X_HIDDEN GLboolean
__glxGetMscRate(struct glx_screen * psc,int32_t * numerator,int32_t * denominator)2109 __glxGetMscRate(struct glx_screen *psc,
2110 int32_t * numerator, int32_t * denominator)
2111 {
2112 #if !defined(GLX_USE_WINDOWSGL)
2113 XF86VidModeModeLine mode_line;
2114 int dot_clock;
2115 int i;
2116
2117 if (XF86VidModeQueryVersion(psc->dpy, &i, &i) &&
2118 XF86VidModeGetModeLine(psc->dpy, psc->scr, &dot_clock, &mode_line)) {
2119 unsigned n = dot_clock * 1000;
2120 unsigned d = mode_line.vtotal * mode_line.htotal;
2121
2122 # define V_INTERLACE 0x010
2123 # define V_DBLSCAN 0x020
2124
2125 if (mode_line.flags & V_INTERLACE)
2126 n *= 2;
2127 else if (mode_line.flags & V_DBLSCAN)
2128 d *= 2;
2129
2130 /* The OML_sync_control spec requires that if the refresh rate is a
2131 * whole number, that the returned numerator be equal to the refresh
2132 * rate and the denominator be 1.
2133 */
2134
2135 if (n % d == 0) {
2136 n /= d;
2137 d = 1;
2138 }
2139 else {
2140 static const unsigned f[] = { 13, 11, 7, 5, 3, 2, 0 };
2141
2142 /* This is a poor man's way to reduce a fraction. It's far from
2143 * perfect, but it will work well enough for this situation.
2144 */
2145
2146 for (i = 0; f[i] != 0; i++) {
2147 while (n % f[i] == 0 && d % f[i] == 0) {
2148 d /= f[i];
2149 n /= f[i];
2150 }
2151 }
2152 }
2153
2154 *numerator = n;
2155 *denominator = d;
2156
2157 return True;
2158 }
2159 #endif
2160
2161 return False;
2162 }
2163 #endif
2164
2165 /**
2166 * Determine the refresh rate of the specified drawable and display.
2167 *
2168 * \param dpy Display whose refresh rate is to be determined.
2169 * \param drawable Drawable whose refresh rate is to be determined.
2170 * \param numerator Numerator of the refresh rate.
2171 * \param demoninator Denominator of the refresh rate.
2172 * \return If the refresh rate for the specified display and drawable could
2173 * be calculated, True is returned. Otherwise False is returned.
2174 *
2175 * \note This function is implemented entirely client-side. A lot of other
2176 * functionality is required to export GLX_OML_sync_control, so on
2177 * XFree86 this function can be called for direct-rendering contexts
2178 * when GLX_OML_sync_control appears in the client extension string.
2179 */
2180
2181 _X_HIDDEN Bool
glXGetMscRateOML(Display * dpy,GLXDrawable drawable,int32_t * numerator,int32_t * denominator)2182 glXGetMscRateOML(Display * dpy, GLXDrawable drawable,
2183 int32_t * numerator, int32_t * denominator)
2184 {
2185 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL) && !defined(GLX_USE_WINDOWSGL)
2186 __GLXDRIdrawable *draw = GetGLXDRIDrawable(dpy, drawable);
2187
2188 if (draw == NULL)
2189 return False;
2190
2191 return __glxGetMscRate(draw->psc, numerator, denominator);
2192 #else
2193 (void) dpy;
2194 (void) drawable;
2195 (void) numerator;
2196 (void) denominator;
2197 #endif
2198 return False;
2199 }
2200
2201
2202 _X_HIDDEN int64_t
glXSwapBuffersMscOML(Display * dpy,GLXDrawable drawable,int64_t target_msc,int64_t divisor,int64_t remainder)2203 glXSwapBuffersMscOML(Display *dpy, GLXDrawable drawable,
2204 int64_t target_msc, int64_t divisor, int64_t remainder)
2205 {
2206 struct glx_context *gc = __glXGetCurrentContext();
2207 #ifdef GLX_DIRECT_RENDERING
2208 __GLXDRIdrawable *pdraw = GetGLXDRIDrawable(dpy, drawable);
2209 struct glx_screen *psc = pdraw ? pdraw->psc : NULL;
2210 #endif
2211
2212 if (gc == &dummyContext) /* no GLX for this */
2213 return -1;
2214
2215 #ifdef GLX_DIRECT_RENDERING
2216 if (!pdraw || !gc->isDirect)
2217 return -1;
2218 #endif
2219
2220 /* The OML_sync_control spec says these should "generate a GLX_BAD_VALUE
2221 * error", but it also says "It [glXSwapBuffersMscOML] will return a value
2222 * of -1 if the function failed because of errors detected in the input
2223 * parameters"
2224 */
2225 if (divisor < 0 || remainder < 0 || target_msc < 0)
2226 return -1;
2227 if (divisor > 0 && remainder >= divisor)
2228 return -1;
2229
2230 if (target_msc == 0 && divisor == 0 && remainder == 0)
2231 remainder = 1;
2232
2233 #ifdef GLX_DIRECT_RENDERING
2234 if (psc->driScreen && psc->driScreen->swapBuffers)
2235 return (*psc->driScreen->swapBuffers)(pdraw, target_msc, divisor,
2236 remainder, False);
2237 #endif
2238
2239 return -1;
2240 }
2241
2242
2243 _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)2244 glXWaitForMscOML(Display *dpy, GLXDrawable drawable, int64_t target_msc,
2245 int64_t divisor, int64_t remainder, int64_t *ust,
2246 int64_t *msc, int64_t *sbc)
2247 {
2248 #ifdef GLX_DIRECT_RENDERING
2249 __GLXDRIdrawable *pdraw = GetGLXDRIDrawable(dpy, drawable);
2250 struct glx_screen *psc = pdraw ? pdraw->psc : NULL;
2251 int ret;
2252 #endif
2253
2254
2255 /* The OML_sync_control spec says these should "generate a GLX_BAD_VALUE
2256 * error", but the return type in the spec is Bool.
2257 */
2258 if (divisor < 0 || remainder < 0 || target_msc < 0)
2259 return False;
2260 if (divisor > 0 && remainder >= divisor)
2261 return False;
2262
2263 #ifdef GLX_DIRECT_RENDERING
2264 if (pdraw && psc->driScreen && psc->driScreen->waitForMSC) {
2265 ret = psc->driScreen->waitForMSC(pdraw, target_msc, divisor, remainder,
2266 ust, msc, sbc);
2267 return ret;
2268 }
2269 #endif
2270
2271 return False;
2272 }
2273
2274
2275 _X_HIDDEN Bool
glXWaitForSbcOML(Display * dpy,GLXDrawable drawable,int64_t target_sbc,int64_t * ust,int64_t * msc,int64_t * sbc)2276 glXWaitForSbcOML(Display *dpy, GLXDrawable drawable, int64_t target_sbc,
2277 int64_t *ust, int64_t *msc, int64_t *sbc)
2278 {
2279 #ifdef GLX_DIRECT_RENDERING
2280 __GLXDRIdrawable *pdraw = GetGLXDRIDrawable(dpy, drawable);
2281 struct glx_screen *psc = pdraw ? pdraw->psc : NULL;
2282 int ret;
2283 #endif
2284
2285 /* The OML_sync_control spec says this should "generate a GLX_BAD_VALUE
2286 * error", but the return type in the spec is Bool.
2287 */
2288 if (target_sbc < 0)
2289 return False;
2290
2291 #ifdef GLX_DIRECT_RENDERING
2292 if (pdraw && psc->driScreen && psc->driScreen->waitForSBC) {
2293 ret = psc->driScreen->waitForSBC(pdraw, target_sbc, ust, msc, sbc);
2294 return ret;
2295 }
2296 #endif
2297
2298 return False;
2299 }
2300
2301 /*@}*/
2302
2303
2304 /**
2305 * Mesa extension stubs. These will help reduce portability problems.
2306 */
2307 /*@{*/
2308
2309 /**
2310 * Release all buffers associated with the specified GLX drawable.
2311 *
2312 * \todo
2313 * This function was intended for stand-alone Mesa. The issue there is that
2314 * the library doesn't get any notification when a window is closed. In
2315 * DRI there is a similar but slightly different issue. When GLX 1.3 is
2316 * supported, there are 3 different functions to destroy a drawable. It
2317 * should be possible to create GLX protocol (or have it determine which
2318 * protocol to use based on the type of the drawable) to have one function
2319 * do the work of 3. For the direct-rendering case, this function could
2320 * just call the driver's \c __DRIdrawableRec::destroyDrawable function.
2321 * This would reduce the frequency with which \c __driGarbageCollectDrawables
2322 * would need to be used. This really should be done as part of the new DRI
2323 * interface work.
2324 *
2325 * \sa http://oss.sgi.com/projects/ogl-sample/registry/MESA/release_buffers.txt
2326 * __driGarbageCollectDrawables
2327 * glXDestroyGLXPixmap
2328 * glXDestroyPbuffer glXDestroyPixmap glXDestroyWindow
2329 * glXDestroyGLXPbufferSGIX glXDestroyGLXVideoSourceSGIX
2330 */
2331 _X_HIDDEN Bool
glXReleaseBuffersMESA(Display * dpy,GLXDrawable d)2332 glXReleaseBuffersMESA(Display * dpy, GLXDrawable d)
2333 {
2334 (void) dpy;
2335 (void) d;
2336 return False;
2337 }
2338
2339
2340 _GLX_PUBLIC GLXPixmap
glXCreateGLXPixmapMESA(Display * dpy,XVisualInfo * visual,Pixmap pixmap,Colormap cmap)2341 glXCreateGLXPixmapMESA(Display * dpy, XVisualInfo * visual,
2342 Pixmap pixmap, Colormap cmap)
2343 {
2344 (void) dpy;
2345 (void) visual;
2346 (void) pixmap;
2347 (void) cmap;
2348 return 0;
2349 }
2350
2351 /*@}*/
2352
2353
2354 /**
2355 * GLX_MESA_copy_sub_buffer
2356 */
2357 #define X_GLXvop_CopySubBufferMESA 5154 /* temporary */
2358 _X_HIDDEN void
glXCopySubBufferMESA(Display * dpy,GLXDrawable drawable,int x,int y,int width,int height)2359 glXCopySubBufferMESA(Display * dpy, GLXDrawable drawable,
2360 int x, int y, int width, int height)
2361 {
2362 xGLXVendorPrivateReq *req;
2363 struct glx_context *gc;
2364 GLXContextTag tag;
2365 CARD32 *drawable_ptr;
2366 INT32 *x_ptr, *y_ptr, *w_ptr, *h_ptr;
2367 CARD8 opcode;
2368
2369 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
2370 __GLXDRIdrawable *pdraw = GetGLXDRIDrawable(dpy, drawable);
2371 if (pdraw != NULL) {
2372 struct glx_screen *psc = pdraw->psc;
2373 if (psc->driScreen->copySubBuffer != NULL) {
2374 (*psc->driScreen->copySubBuffer) (pdraw, x, y, width, height, True);
2375 }
2376
2377 return;
2378 }
2379 #endif
2380
2381 opcode = __glXSetupForCommand(dpy);
2382 if (!opcode)
2383 return;
2384
2385 /*
2386 ** The calling thread may or may not have a current context. If it
2387 ** does, send the context tag so the server can do a flush.
2388 */
2389 gc = __glXGetCurrentContext();
2390 if ((gc != &dummyContext) && (dpy == gc->currentDpy) &&
2391 ((drawable == gc->currentDrawable) ||
2392 (drawable == gc->currentReadable))) {
2393 tag = gc->currentContextTag;
2394 }
2395 else {
2396 tag = 0;
2397 }
2398
2399 LockDisplay(dpy);
2400 GetReqExtra(GLXVendorPrivate, sizeof(CARD32) + sizeof(INT32) * 4, req);
2401 req->reqType = opcode;
2402 req->glxCode = X_GLXVendorPrivate;
2403 req->vendorCode = X_GLXvop_CopySubBufferMESA;
2404 req->contextTag = tag;
2405
2406 drawable_ptr = (CARD32 *) (req + 1);
2407 x_ptr = (INT32 *) (drawable_ptr + 1);
2408 y_ptr = (INT32 *) (drawable_ptr + 2);
2409 w_ptr = (INT32 *) (drawable_ptr + 3);
2410 h_ptr = (INT32 *) (drawable_ptr + 4);
2411
2412 *drawable_ptr = drawable;
2413 *x_ptr = x;
2414 *y_ptr = y;
2415 *w_ptr = width;
2416 *h_ptr = height;
2417
2418 UnlockDisplay(dpy);
2419 SyncHandle();
2420 }
2421
2422 /*@{*/
2423 _X_HIDDEN void
glXBindTexImageEXT(Display * dpy,GLXDrawable drawable,int buffer,const int * attrib_list)2424 glXBindTexImageEXT(Display *dpy, GLXDrawable drawable, int buffer,
2425 const int *attrib_list)
2426 {
2427 xGLXVendorPrivateReq *req;
2428 struct glx_context *gc = __glXGetCurrentContext();
2429 CARD32 *drawable_ptr;
2430 INT32 *buffer_ptr;
2431 CARD32 *num_attrib_ptr;
2432 CARD32 *attrib_ptr;
2433 CARD8 opcode;
2434 unsigned int i = 0;
2435
2436 #ifdef GLX_DIRECT_RENDERING
2437 __GLXDRIdrawable *pdraw = GetGLXDRIDrawable(dpy, drawable);
2438 if (pdraw != NULL) {
2439 struct glx_screen *psc = pdraw->psc;
2440 if (psc->driScreen->bindTexImage != NULL)
2441 (*psc->driScreen->bindTexImage) (pdraw, buffer, attrib_list);
2442
2443 return;
2444 }
2445 #endif
2446
2447 if (attrib_list) {
2448 while (attrib_list[i * 2] != None)
2449 i++;
2450 }
2451
2452 opcode = __glXSetupForCommand(dpy);
2453 if (!opcode)
2454 return;
2455
2456 LockDisplay(dpy);
2457 GetReqExtra(GLXVendorPrivate, 12 + 8 * i, req);
2458 req->reqType = opcode;
2459 req->glxCode = X_GLXVendorPrivate;
2460 req->vendorCode = X_GLXvop_BindTexImageEXT;
2461 req->contextTag = gc->currentContextTag;
2462
2463 drawable_ptr = (CARD32 *) (req + 1);
2464 buffer_ptr = (INT32 *) (drawable_ptr + 1);
2465 num_attrib_ptr = (CARD32 *) (buffer_ptr + 1);
2466 attrib_ptr = (CARD32 *) (num_attrib_ptr + 1);
2467
2468 *drawable_ptr = drawable;
2469 *buffer_ptr = buffer;
2470 *num_attrib_ptr = (CARD32) i;
2471
2472 i = 0;
2473 if (attrib_list) {
2474 while (attrib_list[i * 2] != None) {
2475 *attrib_ptr++ = (CARD32) attrib_list[i * 2 + 0];
2476 *attrib_ptr++ = (CARD32) attrib_list[i * 2 + 1];
2477 i++;
2478 }
2479 }
2480
2481 UnlockDisplay(dpy);
2482 SyncHandle();
2483 }
2484
2485 _X_HIDDEN void
glXReleaseTexImageEXT(Display * dpy,GLXDrawable drawable,int buffer)2486 glXReleaseTexImageEXT(Display * dpy, GLXDrawable drawable, int buffer)
2487 {
2488 xGLXVendorPrivateReq *req;
2489 struct glx_context *gc = __glXGetCurrentContext();
2490 CARD32 *drawable_ptr;
2491 INT32 *buffer_ptr;
2492 CARD8 opcode;
2493
2494 #ifdef GLX_DIRECT_RENDERING
2495 __GLXDRIdrawable *pdraw = GetGLXDRIDrawable(dpy, drawable);
2496 if (pdraw != NULL) {
2497 struct glx_screen *psc = pdraw->psc;
2498 if (psc->driScreen->releaseTexImage != NULL)
2499 (*psc->driScreen->releaseTexImage) (pdraw, buffer);
2500
2501 return;
2502 }
2503 #endif
2504
2505 opcode = __glXSetupForCommand(dpy);
2506 if (!opcode)
2507 return;
2508
2509 LockDisplay(dpy);
2510 GetReqExtra(GLXVendorPrivate, sizeof(CARD32) + sizeof(INT32), req);
2511 req->reqType = opcode;
2512 req->glxCode = X_GLXVendorPrivate;
2513 req->vendorCode = X_GLXvop_ReleaseTexImageEXT;
2514 req->contextTag = gc->currentContextTag;
2515
2516 drawable_ptr = (CARD32 *) (req + 1);
2517 buffer_ptr = (INT32 *) (drawable_ptr + 1);
2518
2519 *drawable_ptr = drawable;
2520 *buffer_ptr = buffer;
2521
2522 UnlockDisplay(dpy);
2523 SyncHandle();
2524 }
2525
2526 /*@}*/
2527
2528 #endif /* GLX_USE_APPLEGL */
2529
2530 /*
2531 ** glXGetProcAddress support
2532 */
2533
2534 struct name_address_pair
2535 {
2536 const char *Name;
2537 GLvoid *Address;
2538 };
2539
2540 #define GLX_FUNCTION(f) { # f, (GLvoid *) f }
2541 #define GLX_FUNCTION2(n,f) { # n, (GLvoid *) f }
2542
2543 static const struct name_address_pair GLX_functions[] = {
2544 /*** GLX_VERSION_1_0 ***/
2545 GLX_FUNCTION(glXChooseVisual),
2546 GLX_FUNCTION(glXCopyContext),
2547 GLX_FUNCTION(glXCreateContext),
2548 GLX_FUNCTION(glXCreateGLXPixmap),
2549 GLX_FUNCTION(glXDestroyContext),
2550 GLX_FUNCTION(glXDestroyGLXPixmap),
2551 GLX_FUNCTION(glXGetConfig),
2552 GLX_FUNCTION(glXGetCurrentContext),
2553 GLX_FUNCTION(glXGetCurrentDrawable),
2554 GLX_FUNCTION(glXIsDirect),
2555 GLX_FUNCTION(glXMakeCurrent),
2556 GLX_FUNCTION(glXQueryExtension),
2557 GLX_FUNCTION(glXQueryVersion),
2558 GLX_FUNCTION(glXSwapBuffers),
2559 GLX_FUNCTION(glXUseXFont),
2560 GLX_FUNCTION(glXWaitGL),
2561 GLX_FUNCTION(glXWaitX),
2562
2563 /*** GLX_VERSION_1_1 ***/
2564 GLX_FUNCTION(glXGetClientString),
2565 GLX_FUNCTION(glXQueryExtensionsString),
2566 GLX_FUNCTION(glXQueryServerString),
2567
2568 /*** GLX_VERSION_1_2 ***/
2569 GLX_FUNCTION(glXGetCurrentDisplay),
2570
2571 /*** GLX_VERSION_1_3 ***/
2572 GLX_FUNCTION(glXChooseFBConfig),
2573 GLX_FUNCTION(glXCreateNewContext),
2574 GLX_FUNCTION(glXCreatePbuffer),
2575 GLX_FUNCTION(glXCreatePixmap),
2576 GLX_FUNCTION(glXCreateWindow),
2577 GLX_FUNCTION(glXDestroyPbuffer),
2578 GLX_FUNCTION(glXDestroyPixmap),
2579 GLX_FUNCTION(glXDestroyWindow),
2580 GLX_FUNCTION(glXGetCurrentReadDrawable),
2581 GLX_FUNCTION(glXGetFBConfigAttrib),
2582 GLX_FUNCTION(glXGetFBConfigs),
2583 GLX_FUNCTION(glXGetSelectedEvent),
2584 GLX_FUNCTION(glXGetVisualFromFBConfig),
2585 GLX_FUNCTION(glXMakeContextCurrent),
2586 GLX_FUNCTION(glXQueryContext),
2587 GLX_FUNCTION(glXQueryDrawable),
2588 GLX_FUNCTION(glXSelectEvent),
2589
2590 /*** GLX_SGIX_fbconfig ***/
2591 GLX_FUNCTION2(glXGetFBConfigAttribSGIX, glXGetFBConfigAttrib),
2592 GLX_FUNCTION2(glXChooseFBConfigSGIX, glXChooseFBConfig),
2593 GLX_FUNCTION(glXCreateGLXPixmapWithConfigSGIX),
2594 GLX_FUNCTION(glXCreateContextWithConfigSGIX),
2595 GLX_FUNCTION2(glXGetVisualFromFBConfigSGIX, glXGetVisualFromFBConfig),
2596 GLX_FUNCTION(glXGetFBConfigFromVisualSGIX),
2597
2598 /*** GLX_ARB_get_proc_address ***/
2599 GLX_FUNCTION(glXGetProcAddressARB),
2600
2601 /*** GLX 1.4 ***/
2602 GLX_FUNCTION2(glXGetProcAddress, glXGetProcAddressARB),
2603
2604 #ifndef GLX_USE_APPLEGL
2605 /*** GLX_SGI_swap_control ***/
2606 GLX_FUNCTION(glXSwapIntervalSGI),
2607
2608 /*** GLX_SGI_video_sync ***/
2609 GLX_FUNCTION(glXGetVideoSyncSGI),
2610 GLX_FUNCTION(glXWaitVideoSyncSGI),
2611
2612 /*** GLX_SGI_make_current_read ***/
2613 GLX_FUNCTION2(glXMakeCurrentReadSGI, glXMakeContextCurrent),
2614 GLX_FUNCTION2(glXGetCurrentReadDrawableSGI, glXGetCurrentReadDrawable),
2615
2616 /*** GLX_EXT_import_context ***/
2617 GLX_FUNCTION(glXFreeContextEXT),
2618 GLX_FUNCTION(glXGetContextIDEXT),
2619 GLX_FUNCTION2(glXGetCurrentDisplayEXT, glXGetCurrentDisplay),
2620 GLX_FUNCTION(glXImportContextEXT),
2621 GLX_FUNCTION2(glXQueryContextInfoEXT, glXQueryContext),
2622
2623 /*** GLX_SGIX_pbuffer ***/
2624 GLX_FUNCTION(glXCreateGLXPbufferSGIX),
2625 GLX_FUNCTION(glXDestroyGLXPbufferSGIX),
2626 GLX_FUNCTION(glXQueryGLXPbufferSGIX),
2627 GLX_FUNCTION(glXSelectEventSGIX),
2628 GLX_FUNCTION(glXGetSelectedEventSGIX),
2629
2630 /*** GLX_MESA_copy_sub_buffer ***/
2631 GLX_FUNCTION(glXCopySubBufferMESA),
2632
2633 /*** GLX_MESA_pixmap_colormap ***/
2634 GLX_FUNCTION(glXCreateGLXPixmapMESA),
2635
2636 /*** GLX_MESA_release_buffers ***/
2637 GLX_FUNCTION(glXReleaseBuffersMESA),
2638
2639 /*** GLX_MESA_swap_control ***/
2640 GLX_FUNCTION(glXSwapIntervalMESA),
2641 GLX_FUNCTION(glXGetSwapIntervalMESA),
2642
2643 /*** GLX_OML_sync_control ***/
2644 GLX_FUNCTION(glXWaitForSbcOML),
2645 GLX_FUNCTION(glXWaitForMscOML),
2646 GLX_FUNCTION(glXSwapBuffersMscOML),
2647 GLX_FUNCTION(glXGetMscRateOML),
2648 GLX_FUNCTION(glXGetSyncValuesOML),
2649
2650 /*** GLX_EXT_texture_from_pixmap ***/
2651 GLX_FUNCTION(glXBindTexImageEXT),
2652 GLX_FUNCTION(glXReleaseTexImageEXT),
2653
2654 /*** GLX_EXT_swap_control ***/
2655 GLX_FUNCTION(glXSwapIntervalEXT),
2656 #endif
2657
2658 #if defined(GLX_DIRECT_RENDERING) && defined(GLX_USE_DRM)
2659 /*** DRI configuration ***/
2660 GLX_FUNCTION(glXGetScreenDriver),
2661 GLX_FUNCTION(glXGetDriverConfig),
2662 #endif
2663
2664 /*** GLX_ARB_create_context and GLX_ARB_create_context_profile ***/
2665 GLX_FUNCTION(glXCreateContextAttribsARB),
2666
2667 /*** GLX_MESA_query_renderer ***/
2668 GLX_FUNCTION(glXQueryRendererIntegerMESA),
2669 GLX_FUNCTION(glXQueryRendererStringMESA),
2670 GLX_FUNCTION(glXQueryCurrentRendererIntegerMESA),
2671 GLX_FUNCTION(glXQueryCurrentRendererStringMESA),
2672
2673 {NULL, NULL} /* end of list */
2674 };
2675
2676 static const GLvoid *
get_glx_proc_address(const char * funcName)2677 get_glx_proc_address(const char *funcName)
2678 {
2679 GLuint i;
2680
2681 /* try static functions */
2682 for (i = 0; GLX_functions[i].Name; i++) {
2683 if (strcmp(GLX_functions[i].Name, funcName) == 0)
2684 return GLX_functions[i].Address;
2685 }
2686
2687 return NULL;
2688 }
2689
2690 /**
2691 * Get the address of a named GL function. This is the pre-GLX 1.4 name for
2692 * \c glXGetProcAddress.
2693 *
2694 * \param procName Name of a GL or GLX function.
2695 * \returns A pointer to the named function
2696 *
2697 * \sa glXGetProcAddress
2698 */
glXGetProcAddressARB(const GLubyte * procName)2699 _GLX_PUBLIC void (*glXGetProcAddressARB(const GLubyte * procName)) (void)
2700 {
2701 typedef void (*gl_function) (void);
2702 gl_function f;
2703
2704
2705 /* Search the table of GLX and internal functions first. If that
2706 * fails and the supplied name could be a valid core GL name, try
2707 * searching the core GL function table. This check is done to prevent
2708 * DRI based drivers from searching the core GL function table for
2709 * internal API functions.
2710 */
2711 f = (gl_function) get_glx_proc_address((const char *) procName);
2712 if ((f == NULL) && (procName[0] == 'g') && (procName[1] == 'l')
2713 && (procName[2] != 'X')) {
2714 #ifdef GLX_INDIRECT_RENDERING
2715 f = (gl_function) __indirect_get_proc_address((const char *) procName);
2716 #endif
2717 if (!f)
2718 f = (gl_function) _glapi_get_proc_address((const char *) procName);
2719 #ifdef GLX_USE_APPLEGL
2720 if (!f)
2721 f = applegl_get_proc_address((const char *) procName);
2722 #endif
2723 }
2724 return f;
2725 }
2726
2727 /**
2728 * Get the address of a named GL function. This is the GLX 1.4 name for
2729 * \c glXGetProcAddressARB.
2730 *
2731 * \param procName Name of a GL or GLX function.
2732 * \returns A pointer to the named function
2733 *
2734 * \sa glXGetProcAddressARB
2735 */
2736 _GLX_PUBLIC
2737 GLX_ALIAS(__GLXextFuncPtr, glXGetProcAddress,
2738 (const GLubyte * procName),
2739 (procName), glXGetProcAddressARB)
2740
2741 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
2742
2743 PUBLIC int
MesaGLInteropGLXQueryDeviceInfo(Display * dpy,GLXContext context,struct mesa_glinterop_device_info * out)2744 MesaGLInteropGLXQueryDeviceInfo(Display *dpy, GLXContext context,
2745 struct mesa_glinterop_device_info *out)
2746 {
2747 struct glx_context *gc = (struct glx_context*)context;
2748 int ret;
2749
2750 __glXLock();
2751
2752 if (!gc || gc->xid == None || !gc->isDirect) {
2753 __glXUnlock();
2754 return MESA_GLINTEROP_INVALID_CONTEXT;
2755 }
2756
2757 if (!gc->vtable->interop_query_device_info) {
2758 __glXUnlock();
2759 return MESA_GLINTEROP_UNSUPPORTED;
2760 }
2761
2762 ret = gc->vtable->interop_query_device_info(gc, out);
2763 __glXUnlock();
2764 return ret;
2765 }
2766
2767 PUBLIC int
MesaGLInteropGLXExportObject(Display * dpy,GLXContext context,struct mesa_glinterop_export_in * in,struct mesa_glinterop_export_out * out)2768 MesaGLInteropGLXExportObject(Display *dpy, GLXContext context,
2769 struct mesa_glinterop_export_in *in,
2770 struct mesa_glinterop_export_out *out)
2771 {
2772 struct glx_context *gc = (struct glx_context*)context;
2773 int ret;
2774
2775 __glXLock();
2776
2777 if (!gc || gc->xid == None || !gc->isDirect) {
2778 __glXUnlock();
2779 return MESA_GLINTEROP_INVALID_CONTEXT;
2780 }
2781
2782 if (!gc->vtable->interop_export_object) {
2783 __glXUnlock();
2784 return MESA_GLINTEROP_UNSUPPORTED;
2785 }
2786
2787 ret = gc->vtable->interop_export_object(gc, in, out);
2788 __glXUnlock();
2789 return ret;
2790 }
2791
2792 #endif /* defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL) */
2793