glx_pbuffer.c revision 4833104718677caad0027d5e7539ca9bba389392 
1/*
2 * (C) Copyright IBM Corporation 2004
3 * 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 * on the rights to use, copy, modify, merge, publish, distribute, sub
9 * license, and/or sell copies of the Software, and to permit persons to whom
10 * the Software is furnished to do so, subject to the following conditions:
11 *
12 * The above copyright notice and this permission notice (including the next
13 * paragraph) shall be included in all copies or substantial portions of the
14 * Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.  IN NO EVENT SHALL
19 * IBM AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
21 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
22 * DEALINGS IN THE SOFTWARE.
23 */
24
25/**
26 * \file glx_pbuffer.c
27 * Implementation of pbuffer related functions.
28 *
29 * \author Ian Romanick <idr@us.ibm.com>
30 */
31
32#include <inttypes.h>
33#include "glxclient.h"
34#include <X11/extensions/extutil.h>
35#include <X11/extensions/Xext.h>
36#include <assert.h>
37#include <string.h>
38#include "glxextensions.h"
39
40#ifdef GLX_USE_APPLEGL
41#include <pthread.h>
42#include "apple_glx_drawable.h"
43#include "glx_error.h"
44#endif
45
46#define WARN_ONCE_GLX_1_3(a, b) {		\
47		static int warned=1;		\
48		if(warned) {			\
49			warn_GLX_1_3((a), b );	\
50			warned=0;		\
51		}				\
52	}
53
54/**
55 * Emit a warning when clients use GLX 1.3 functions on pre-1.3 systems.
56 */
57static void
58warn_GLX_1_3(Display * dpy, const char *function_name)
59{
60   struct glx_display *priv = __glXInitialize(dpy);
61
62   if (priv->minorVersion < 3) {
63      fprintf(stderr,
64              "WARNING: Application calling GLX 1.3 function \"%s\" "
65              "when GLX 1.3 is not supported!  This is an application bug!\n",
66              function_name);
67   }
68}
69
70#ifndef GLX_USE_APPLEGL
71/**
72 * Change a drawable's attribute.
73 *
74 * This function is used to implement \c glXSelectEvent and
75 * \c glXSelectEventSGIX.
76 *
77 * \note
78 * This function dynamically determines whether to use the SGIX_pbuffer
79 * version of the protocol or the GLX 1.3 version of the protocol.
80 */
81static void
82ChangeDrawableAttribute(Display * dpy, GLXDrawable drawable,
83                        const CARD32 * attribs, size_t num_attribs)
84{
85   struct glx_display *priv = __glXInitialize(dpy);
86#ifdef GLX_DIRECT_RENDERING
87   __GLXDRIdrawable *pdraw;
88#endif
89   CARD32 *output;
90   CARD8 opcode;
91   int i;
92
93   if ((dpy == NULL) || (drawable == 0)) {
94      return;
95   }
96
97   opcode = __glXSetupForCommand(dpy);
98   if (!opcode)
99      return;
100
101   LockDisplay(dpy);
102
103   if ((priv->majorVersion > 1) || (priv->minorVersion >= 3)) {
104      xGLXChangeDrawableAttributesReq *req;
105
106      GetReqExtra(GLXChangeDrawableAttributes, 8 * num_attribs, req);
107      output = (CARD32 *) (req + 1);
108
109      req->reqType = opcode;
110      req->glxCode = X_GLXChangeDrawableAttributes;
111      req->drawable = drawable;
112      req->numAttribs = (CARD32) num_attribs;
113   }
114   else {
115      xGLXVendorPrivateWithReplyReq *vpreq;
116
117      GetReqExtra(GLXVendorPrivateWithReply, 8 + (8 * num_attribs), vpreq);
118      output = (CARD32 *) (vpreq + 1);
119
120      vpreq->reqType = opcode;
121      vpreq->glxCode = X_GLXVendorPrivateWithReply;
122      vpreq->vendorCode = X_GLXvop_ChangeDrawableAttributesSGIX;
123
124      output[0] = (CARD32) drawable;
125      output[1] = num_attribs;
126      output += 2;
127   }
128
129   (void) memcpy(output, attribs, sizeof(CARD32) * 2 * num_attribs);
130
131   UnlockDisplay(dpy);
132   SyncHandle();
133
134#ifdef GLX_DIRECT_RENDERING
135   pdraw = GetGLXDRIDrawable(dpy, drawable);
136
137   if (!pdraw)
138      return;
139
140   for (i = 0; i < num_attribs; i++) {
141      switch(attribs[i * 2]) {
142      case GLX_EVENT_MASK:
143	 /* Keep a local copy for masking out DRI2 proto events as needed */
144	 pdraw->eventMask = attribs[i * 2 + 1];
145	 break;
146      }
147   }
148#endif
149
150   return;
151}
152
153
154#ifdef GLX_DIRECT_RENDERING
155static GLenum
156determineTextureTarget(const int *attribs, int numAttribs)
157{
158   GLenum target = 0;
159   int i;
160
161   for (i = 0; i < numAttribs; i++) {
162      if (attribs[2 * i] == GLX_TEXTURE_TARGET_EXT) {
163         switch (attribs[2 * i + 1]) {
164         case GLX_TEXTURE_2D_EXT:
165            target = GL_TEXTURE_2D;
166            break;
167         case GLX_TEXTURE_RECTANGLE_EXT:
168            target = GL_TEXTURE_RECTANGLE_ARB;
169            break;
170         }
171      }
172   }
173
174   return target;
175}
176
177static GLenum
178determineTextureFormat(const int *attribs, int numAttribs)
179{
180   int i;
181
182   for (i = 0; i < numAttribs; i++) {
183      if (attribs[2 * i] == GLX_TEXTURE_FORMAT_EXT)
184         return attribs[2 * i + 1];
185   }
186
187   return 0;
188}
189
190static GLboolean
191CreateDRIDrawable(Display *dpy, struct glx_config *config,
192		  XID drawable, XID glxdrawable,
193		  const int *attrib_list, size_t num_attribs)
194{
195   struct glx_display *const priv = __glXInitialize(dpy);
196   __GLXDRIdrawable *pdraw;
197   struct glx_screen *psc;
198
199   psc = priv->screens[config->screen];
200   if (psc->driScreen == NULL)
201      return GL_TRUE;
202
203   pdraw = psc->driScreen->createDrawable(psc, drawable,
204					  glxdrawable, config);
205   if (pdraw == NULL) {
206      fprintf(stderr, "failed to create drawable\n");
207      return GL_FALSE;
208   }
209
210   if (__glxHashInsert(priv->drawHash, glxdrawable, pdraw)) {
211      (*pdraw->destroyDrawable) (pdraw);
212      return GL_FALSE;
213   }
214
215   pdraw->textureTarget = determineTextureTarget(attrib_list, num_attribs);
216   pdraw->textureFormat = determineTextureFormat(attrib_list, num_attribs);
217
218   return GL_TRUE;
219}
220
221static void
222DestroyDRIDrawable(Display *dpy, GLXDrawable drawable, int destroy_xdrawable)
223{
224   struct glx_display *const priv = __glXInitialize(dpy);
225   __GLXDRIdrawable *pdraw = GetGLXDRIDrawable(dpy, drawable);
226   XID xid;
227
228   if (pdraw != NULL) {
229      xid = pdraw->xDrawable;
230      (*pdraw->destroyDrawable) (pdraw);
231      __glxHashDelete(priv->drawHash, drawable);
232      if (destroy_xdrawable)
233         XFreePixmap(priv->dpy, xid);
234   }
235}
236
237#else
238
239static GLboolean
240CreateDRIDrawable(Display *dpy, const struct glx_config * fbconfig,
241		  XID drawable, XID glxdrawable,
242		  const int *attrib_list, size_t num_attribs)
243{
244    return GL_FALSE;
245}
246
247static void
248DestroyDRIDrawable(Display *dpy, GLXDrawable drawable, int destroy_xdrawable)
249{
250}
251
252#endif
253
254/**
255 * Get a drawable's attribute.
256 *
257 * This function is used to implement \c glXGetSelectedEvent and
258 * \c glXGetSelectedEventSGIX.
259 *
260 * \note
261 * This function dynamically determines whether to use the SGIX_pbuffer
262 * version of the protocol or the GLX 1.3 version of the protocol.
263 *
264 * \todo
265 * The number of attributes returned is likely to be small, probably less than
266 * 10.  Given that, this routine should try to use an array on the stack to
267 * capture the reply rather than always calling Xmalloc.
268 */
269static int
270GetDrawableAttribute(Display * dpy, GLXDrawable drawable,
271                     int attribute, unsigned int *value)
272{
273   struct glx_display *priv;
274   xGLXGetDrawableAttributesReply reply;
275   CARD32 *data;
276   CARD8 opcode;
277   unsigned int length;
278   unsigned int i;
279   unsigned int num_attributes;
280   GLboolean use_glx_1_3;
281
282   if ((dpy == NULL) || (drawable == 0)) {
283      return 0;
284   }
285
286   priv = __glXInitialize(dpy);
287   use_glx_1_3 = ((priv->majorVersion > 1) || (priv->minorVersion >= 3));
288
289   *value = 0;
290
291
292   opcode = __glXSetupForCommand(dpy);
293   if (!opcode)
294      return 0;
295
296   LockDisplay(dpy);
297
298   if (use_glx_1_3) {
299      xGLXGetDrawableAttributesReq *req;
300
301      GetReq(GLXGetDrawableAttributes, req);
302      req->reqType = opcode;
303      req->glxCode = X_GLXGetDrawableAttributes;
304      req->drawable = drawable;
305   }
306   else {
307      xGLXVendorPrivateWithReplyReq *vpreq;
308
309      GetReqExtra(GLXVendorPrivateWithReply, 4, vpreq);
310      data = (CARD32 *) (vpreq + 1);
311      data[0] = (CARD32) drawable;
312
313      vpreq->reqType = opcode;
314      vpreq->glxCode = X_GLXVendorPrivateWithReply;
315      vpreq->vendorCode = X_GLXvop_GetDrawableAttributesSGIX;
316   }
317
318   _XReply(dpy, (xReply *) & reply, 0, False);
319
320   if (reply.type == X_Error) {
321      UnlockDisplay(dpy);
322      SyncHandle();
323      return 0;
324   }
325
326   length = reply.length;
327   if (length) {
328      num_attributes = (use_glx_1_3) ? reply.numAttribs : length / 2;
329      data = (CARD32 *) Xmalloc(length * sizeof(CARD32));
330      if (data == NULL) {
331         /* Throw data on the floor */
332         _XEatData(dpy, length);
333      }
334      else {
335         _XRead(dpy, (char *) data, length * sizeof(CARD32));
336
337         /* Search the set of returned attributes for the attribute requested by
338          * the caller.
339          */
340         for (i = 0; i < num_attributes; i++) {
341            if (data[i * 2] == attribute) {
342               *value = data[(i * 2) + 1];
343               break;
344            }
345         }
346
347#if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
348         {
349            __GLXDRIdrawable *pdraw = GetGLXDRIDrawable(dpy, drawable);
350
351            if (pdraw != NULL && !pdraw->textureTarget)
352               pdraw->textureTarget =
353                  determineTextureTarget((const int *) data, num_attributes);
354            if (pdraw != NULL && !pdraw->textureFormat)
355               pdraw->textureFormat =
356                  determineTextureFormat((const int *) data, num_attributes);
357         }
358#endif
359
360         Xfree(data);
361      }
362   }
363
364   UnlockDisplay(dpy);
365   SyncHandle();
366
367   return 0;
368}
369
370static void
371protocolDestroyDrawable(Display *dpy, GLXDrawable drawable, CARD32 glxCode)
372{
373   xGLXDestroyPbufferReq *req;
374   CARD8 opcode;
375
376   opcode = __glXSetupForCommand(dpy);
377   if (!opcode)
378      return;
379
380   LockDisplay(dpy);
381
382   GetReq(GLXDestroyPbuffer, req);
383   req->reqType = opcode;
384   req->glxCode = glxCode;
385   req->pbuffer = (GLXPbuffer) drawable;
386
387   UnlockDisplay(dpy);
388   SyncHandle();
389}
390
391/**
392 * Create a non-pbuffer GLX drawable.
393 */
394static GLXDrawable
395CreateDrawable(Display *dpy, struct glx_config *config,
396               Drawable drawable, const int *attrib_list, CARD8 glxCode)
397{
398   xGLXCreateWindowReq *req;
399   CARD32 *data;
400   unsigned int i;
401   CARD8 opcode;
402   GLXDrawable xid;
403
404   i = 0;
405   if (attrib_list) {
406      while (attrib_list[i * 2] != None)
407         i++;
408   }
409
410   opcode = __glXSetupForCommand(dpy);
411   if (!opcode)
412      return None;
413
414   LockDisplay(dpy);
415   GetReqExtra(GLXCreateWindow, 8 * i, req);
416   data = (CARD32 *) (req + 1);
417
418   req->reqType = opcode;
419   req->glxCode = glxCode;
420   req->screen = config->screen;
421   req->fbconfig = config->fbconfigID;
422   req->window = drawable;
423   req->glxwindow = xid = XAllocID(dpy);
424   req->numAttribs = i;
425
426   if (attrib_list)
427      memcpy(data, attrib_list, 8 * i);
428
429   UnlockDisplay(dpy);
430   SyncHandle();
431
432   if (!CreateDRIDrawable(dpy, config, drawable, xid, attrib_list, i)) {
433      if (glxCode == X_GLXCreatePixmap)
434         glxCode = X_GLXDestroyPixmap;
435      else
436         glxCode = X_GLXDestroyWindow;
437      protocolDestroyDrawable(dpy, xid, glxCode);
438      xid = None;
439   }
440
441   return xid;
442}
443
444
445/**
446 * Destroy a non-pbuffer GLX drawable.
447 */
448static void
449DestroyDrawable(Display * dpy, GLXDrawable drawable, CARD32 glxCode)
450{
451   if ((dpy == NULL) || (drawable == 0)) {
452      return;
453   }
454
455   protocolDestroyDrawable(dpy, drawable, glxCode);
456
457   DestroyDRIDrawable(dpy, drawable, GL_FALSE);
458
459   return;
460}
461
462
463/**
464 * Create a pbuffer.
465 *
466 * This function is used to implement \c glXCreatePbuffer and
467 * \c glXCreateGLXPbufferSGIX.
468 *
469 * \note
470 * This function dynamically determines whether to use the SGIX_pbuffer
471 * version of the protocol or the GLX 1.3 version of the protocol.
472 */
473static GLXDrawable
474CreatePbuffer(Display * dpy, struct glx_config *config,
475              unsigned int width, unsigned int height,
476              const int *attrib_list, GLboolean size_in_attribs)
477{
478   struct glx_display *priv = __glXInitialize(dpy);
479   GLXDrawable id = 0;
480   CARD32 *data;
481   CARD8 opcode;
482   unsigned int i;
483   Pixmap pixmap;
484   GLboolean glx_1_3 = GL_FALSE;
485
486   i = 0;
487   if (attrib_list) {
488      while (attrib_list[i * 2])
489         i++;
490   }
491
492   opcode = __glXSetupForCommand(dpy);
493   if (!opcode)
494      return None;
495
496   LockDisplay(dpy);
497   id = XAllocID(dpy);
498
499   if ((priv->majorVersion > 1) || (priv->minorVersion >= 3)) {
500      xGLXCreatePbufferReq *req;
501      unsigned int extra = (size_in_attribs) ? 0 : 2;
502
503      glx_1_3 = GL_TRUE;
504
505      GetReqExtra(GLXCreatePbuffer, (8 * (i + extra)), req);
506      data = (CARD32 *) (req + 1);
507
508      req->reqType = opcode;
509      req->glxCode = X_GLXCreatePbuffer;
510      req->screen = config->screen;
511      req->fbconfig = config->fbconfigID;
512      req->pbuffer = id;
513      req->numAttribs = i + extra;
514
515      if (!size_in_attribs) {
516         data[(2 * i) + 0] = GLX_PBUFFER_WIDTH;
517         data[(2 * i) + 1] = width;
518         data[(2 * i) + 2] = GLX_PBUFFER_HEIGHT;
519         data[(2 * i) + 3] = height;
520         data += 4;
521      }
522   }
523   else {
524      xGLXVendorPrivateReq *vpreq;
525
526      GetReqExtra(GLXVendorPrivate, 20 + (8 * i), vpreq);
527      data = (CARD32 *) (vpreq + 1);
528
529      vpreq->reqType = opcode;
530      vpreq->glxCode = X_GLXVendorPrivate;
531      vpreq->vendorCode = X_GLXvop_CreateGLXPbufferSGIX;
532
533      data[0] = config->screen;
534      data[1] = config->fbconfigID;
535      data[2] = id;
536      data[3] = width;
537      data[4] = height;
538      data += 5;
539   }
540
541   (void) memcpy(data, attrib_list, sizeof(CARD32) * 2 * i);
542
543   UnlockDisplay(dpy);
544   SyncHandle();
545
546   pixmap = XCreatePixmap(dpy, RootWindow(dpy, config->screen),
547			  width, height, config->rgbBits);
548
549   if (!CreateDRIDrawable(dpy, config, pixmap, id, attrib_list, i)) {
550      CARD32 o = glx_1_3 ? X_GLXDestroyPbuffer : X_GLXvop_DestroyGLXPbufferSGIX;
551      XFreePixmap(dpy, pixmap);
552      protocolDestroyDrawable(dpy, id, o);
553      id = None;
554   }
555
556   return id;
557}
558
559/**
560 * Destroy a pbuffer.
561 *
562 * This function is used to implement \c glXDestroyPbuffer and
563 * \c glXDestroyGLXPbufferSGIX.
564 *
565 * \note
566 * This function dynamically determines whether to use the SGIX_pbuffer
567 * version of the protocol or the GLX 1.3 version of the protocol.
568 */
569static void
570DestroyPbuffer(Display * dpy, GLXDrawable drawable)
571{
572   struct glx_display *priv = __glXInitialize(dpy);
573   CARD8 opcode;
574
575   if ((dpy == NULL) || (drawable == 0)) {
576      return;
577   }
578
579   opcode = __glXSetupForCommand(dpy);
580   if (!opcode)
581      return;
582
583   LockDisplay(dpy);
584
585   if ((priv->majorVersion > 1) || (priv->minorVersion >= 3)) {
586      xGLXDestroyPbufferReq *req;
587
588      GetReq(GLXDestroyPbuffer, req);
589      req->reqType = opcode;
590      req->glxCode = X_GLXDestroyPbuffer;
591      req->pbuffer = (GLXPbuffer) drawable;
592   }
593   else {
594      xGLXVendorPrivateWithReplyReq *vpreq;
595      CARD32 *data;
596
597      GetReqExtra(GLXVendorPrivateWithReply, 4, vpreq);
598      data = (CARD32 *) (vpreq + 1);
599
600      data[0] = (CARD32) drawable;
601
602      vpreq->reqType = opcode;
603      vpreq->glxCode = X_GLXVendorPrivateWithReply;
604      vpreq->vendorCode = X_GLXvop_DestroyGLXPbufferSGIX;
605   }
606
607   UnlockDisplay(dpy);
608   SyncHandle();
609
610   DestroyDRIDrawable(dpy, drawable, GL_TRUE);
611
612   return;
613}
614
615/**
616 * Create a new pbuffer.
617 */
618_X_EXPORT GLXPbufferSGIX
619glXCreateGLXPbufferSGIX(Display * dpy, GLXFBConfigSGIX config,
620                        unsigned int width, unsigned int height,
621                        int *attrib_list)
622{
623   return (GLXPbufferSGIX) CreatePbuffer(dpy, (struct glx_config *) config,
624                                         width, height,
625                                         attrib_list, GL_FALSE);
626}
627
628#endif /* GLX_USE_APPLEGL */
629
630/**
631 * Create a new pbuffer.
632 */
633_X_EXPORT GLXPbuffer
634glXCreatePbuffer(Display * dpy, GLXFBConfig config, const int *attrib_list)
635{
636   int i, width, height;
637#ifdef GLX_USE_APPLEGL
638   GLXPbuffer result;
639   int errorcode;
640#endif
641
642   width = 0;
643   height = 0;
644
645   WARN_ONCE_GLX_1_3(dpy, __func__);
646
647#ifdef GLX_USE_APPLEGL
648   for (i = 0; attrib_list[i]; ++i) {
649      switch (attrib_list[i]) {
650      case GLX_PBUFFER_WIDTH:
651         width = attrib_list[i + 1];
652         ++i;
653         break;
654
655      case GLX_PBUFFER_HEIGHT:
656         height = attrib_list[i + 1];
657         ++i;
658         break;
659
660      case GLX_LARGEST_PBUFFER:
661         /* This is a hint we should probably handle, but how? */
662         ++i;
663         break;
664
665      case GLX_PRESERVED_CONTENTS:
666         /* The contents are always preserved with AppleSGLX with CGL. */
667         ++i;
668         break;
669
670      default:
671         return None;
672      }
673   }
674
675   if (apple_glx_pbuffer_create(dpy, config, width, height, &errorcode,
676                                &result)) {
677      /*
678       * apple_glx_pbuffer_create only sets the errorcode to core X11
679       * errors.
680       */
681      __glXSendError(dpy, errorcode, 0, X_GLXCreatePbuffer, true);
682
683      return None;
684   }
685
686   return result;
687#else
688   for (i = 0; attrib_list[i * 2]; i++) {
689      switch (attrib_list[i * 2]) {
690      case GLX_PBUFFER_WIDTH:
691         width = attrib_list[i * 2 + 1];
692         break;
693      case GLX_PBUFFER_HEIGHT:
694         height = attrib_list[i * 2 + 1];
695         break;
696      }
697   }
698
699   return (GLXPbuffer) CreatePbuffer(dpy, (struct glx_config *) config,
700                                     width, height, attrib_list, GL_TRUE);
701#endif
702}
703
704
705/**
706 * Destroy an existing pbuffer.
707 */
708_X_EXPORT void
709glXDestroyPbuffer(Display * dpy, GLXPbuffer pbuf)
710{
711#ifdef GLX_USE_APPLEGL
712   if (apple_glx_pbuffer_destroy(dpy, pbuf)) {
713      __glXSendError(dpy, GLXBadPbuffer, pbuf, X_GLXDestroyPbuffer, false);
714   }
715#else
716   DestroyPbuffer(dpy, pbuf);
717#endif
718}
719
720
721/**
722 * Query an attribute of a drawable.
723 */
724_X_EXPORT void
725glXQueryDrawable(Display * dpy, GLXDrawable drawable,
726                 int attribute, unsigned int *value)
727{
728   WARN_ONCE_GLX_1_3(dpy, __func__);
729#ifdef GLX_USE_APPLEGL
730   Window root;
731   int x, y;
732   unsigned int width, height, bd, depth;
733
734   if (apple_glx_pixmap_query(drawable, attribute, value))
735      return;                   /*done */
736
737   if (apple_glx_pbuffer_query(drawable, attribute, value))
738      return;                   /*done */
739
740   /*
741    * The OpenGL spec states that we should report GLXBadDrawable if
742    * the drawable is invalid, however doing so would require that we
743    * use XSetErrorHandler(), which is known to not be thread safe.
744    * If we use a round-trip call to validate the drawable, there could
745    * be a race, so instead we just opt in favor of letting the
746    * XGetGeometry request fail with a GetGeometry request X error
747    * rather than GLXBadDrawable, in what is hoped to be a rare
748    * case of an invalid drawable.  In practice most and possibly all
749    * X11 apps using GLX shouldn't notice a difference.
750    */
751   if (XGetGeometry
752       (dpy, drawable, &root, &x, &y, &width, &height, &bd, &depth)) {
753      switch (attribute) {
754      case GLX_WIDTH:
755         *value = width;
756         break;
757
758      case GLX_HEIGHT:
759         *value = height;
760         break;
761      }
762   }
763#else
764   GetDrawableAttribute(dpy, drawable, attribute, value);
765#endif
766}
767
768
769#ifndef GLX_USE_APPLEGL
770/**
771 * Query an attribute of a pbuffer.
772 */
773_X_EXPORT int
774glXQueryGLXPbufferSGIX(Display * dpy, GLXPbufferSGIX drawable,
775                       int attribute, unsigned int *value)
776{
777   return GetDrawableAttribute(dpy, drawable, attribute, value);
778}
779#endif
780
781/**
782 * Select the event mask for a drawable.
783 */
784_X_EXPORT void
785glXSelectEvent(Display * dpy, GLXDrawable drawable, unsigned long mask)
786{
787#ifdef GLX_USE_APPLEGL
788   XWindowAttributes xwattr;
789
790   if (apple_glx_pbuffer_set_event_mask(drawable, mask))
791      return;                   /*done */
792
793   /*
794    * The spec allows a window, but currently there are no valid
795    * events for a window, so do nothing.
796    */
797   if (XGetWindowAttributes(dpy, drawable, &xwattr))
798      return;                   /*done */
799   /* The drawable seems to be invalid.  Report an error. */
800
801   __glXSendError(dpy, GLXBadDrawable, drawable,
802                  X_GLXChangeDrawableAttributes, false);
803#else
804   CARD32 attribs[2];
805
806   attribs[0] = (CARD32) GLX_EVENT_MASK;
807   attribs[1] = (CARD32) mask;
808
809   ChangeDrawableAttribute(dpy, drawable, attribs, 1);
810#endif
811}
812
813
814/**
815 * Get the selected event mask for a drawable.
816 */
817_X_EXPORT void
818glXGetSelectedEvent(Display * dpy, GLXDrawable drawable, unsigned long *mask)
819{
820#ifdef GLX_USE_APPLEGL
821   XWindowAttributes xwattr;
822
823   if (apple_glx_pbuffer_get_event_mask(drawable, mask))
824      return;                   /*done */
825
826   /*
827    * The spec allows a window, but currently there are no valid
828    * events for a window, so do nothing, but set the mask to 0.
829    */
830   if (XGetWindowAttributes(dpy, drawable, &xwattr)) {
831      /* The window is valid, so set the mask to 0. */
832      *mask = 0;
833      return;                   /*done */
834   }
835   /* The drawable seems to be invalid.  Report an error. */
836
837   __glXSendError(dpy, GLXBadDrawable, drawable, X_GLXGetDrawableAttributes,
838                  true);
839#else
840   unsigned int value;
841
842
843   /* The non-sense with value is required because on LP64 platforms
844    * sizeof(unsigned int) != sizeof(unsigned long).  On little-endian
845    * we could just type-cast the pointer, but why?
846    */
847
848   GetDrawableAttribute(dpy, drawable, GLX_EVENT_MASK_SGIX, &value);
849   *mask = value;
850#endif
851}
852
853
854_X_EXPORT GLXPixmap
855glXCreatePixmap(Display * dpy, GLXFBConfig config, Pixmap pixmap,
856                const int *attrib_list)
857{
858   WARN_ONCE_GLX_1_3(dpy, __func__);
859
860#ifdef GLX_USE_APPLEGL
861   const struct glx_config *modes = (const struct glx_config *) config;
862
863   if (apple_glx_pixmap_create(dpy, modes->screen, pixmap, modes))
864      return None;
865
866   return pixmap;
867#else
868   return CreateDrawable(dpy, (struct glx_config *) config,
869                         (Drawable) pixmap, attrib_list, X_GLXCreatePixmap);
870#endif
871}
872
873
874_X_EXPORT GLXWindow
875glXCreateWindow(Display * dpy, GLXFBConfig config, Window win,
876                const int *attrib_list)
877{
878   WARN_ONCE_GLX_1_3(dpy, __func__);
879#ifdef GLX_USE_APPLEGL
880   XWindowAttributes xwattr;
881   XVisualInfo *visinfo;
882
883   (void) attrib_list;          /*unused according to GLX 1.4 */
884
885   XGetWindowAttributes(dpy, win, &xwattr);
886
887   visinfo = glXGetVisualFromFBConfig(dpy, config);
888
889   if (NULL == visinfo) {
890      __glXSendError(dpy, GLXBadFBConfig, 0, X_GLXCreateWindow, false);
891      return None;
892   }
893
894   if (visinfo->visualid != XVisualIDFromVisual(xwattr.visual)) {
895      __glXSendError(dpy, BadMatch, 0, X_GLXCreateWindow, true);
896      return None;
897   }
898
899   XFree(visinfo);
900
901   return win;
902#else
903   return CreateDrawable(dpy, (struct glx_config *) config,
904                         (Drawable) win, attrib_list, X_GLXCreateWindow);
905#endif
906}
907
908
909_X_EXPORT void
910glXDestroyPixmap(Display * dpy, GLXPixmap pixmap)
911{
912   WARN_ONCE_GLX_1_3(dpy, __func__);
913#ifdef GLX_USE_APPLEGL
914   if (apple_glx_pixmap_destroy(dpy, pixmap))
915      __glXSendError(dpy, GLXBadPixmap, pixmap, X_GLXDestroyPixmap, false);
916#else
917   DestroyDrawable(dpy, (GLXDrawable) pixmap, X_GLXDestroyPixmap);
918#endif
919}
920
921
922_X_EXPORT void
923glXDestroyWindow(Display * dpy, GLXWindow win)
924{
925   WARN_ONCE_GLX_1_3(dpy, __func__);
926#ifndef GLX_USE_APPLEGL
927   DestroyDrawable(dpy, (GLXDrawable) win, X_GLXDestroyWindow);
928#endif
929}
930
931#ifndef GLX_USE_APPLEGL
932_X_EXPORT
933GLX_ALIAS_VOID(glXDestroyGLXPbufferSGIX,
934               (Display * dpy, GLXPbufferSGIX pbuf),
935               (dpy, pbuf), glXDestroyPbuffer)
936
937_X_EXPORT
938GLX_ALIAS_VOID(glXSelectEventSGIX,
939               (Display * dpy, GLXDrawable drawable,
940                unsigned long mask), (dpy, drawable, mask), glXSelectEvent)
941
942_X_EXPORT
943GLX_ALIAS_VOID(glXGetSelectedEventSGIX,
944               (Display * dpy, GLXDrawable drawable,
945                unsigned long *mask), (dpy, drawable, mask),
946               glXGetSelectedEvent)
947#endif
948