glxclient.h revision 31819830b66a49f1b62e09090cc65aefc657aeb8 
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 glxclient.h
33 * Direct rendering support added by Precision Insight, Inc.
34 *
35 * \author Kevin E. Martin <kevin@precisioninsight.com>
36 */
37
38#ifndef _GLX_client_h_
39#define _GLX_client_h_
40#include <X11/Xproto.h>
41#include <X11/Xlibint.h>
42#include <X11/extensions/extutil.h>
43#define GLX_GLXEXT_PROTOTYPES
44#include <GL/glx.h>
45#include <GL/glxext.h>
46#include <string.h>
47#include <stdlib.h>
48#include <stdio.h>
49#ifdef WIN32
50#include <stdint.h>
51#endif
52#include "GL/glxint.h"
53#include "GL/glxproto.h"
54#include "GL/internal/glcore.h"
55#include "glapi/glapitable.h"
56#include "glxhash.h"
57#if defined( PTHREADS )
58# include <pthread.h>
59#endif
60
61#include "glxextensions.h"
62
63
64/* If we build the library with gcc's -fvisibility=hidden flag, we'll
65 * use the PUBLIC macro to mark functions that are to be exported.
66 *
67 * We also need to define a USED attribute, so the optimizer doesn't
68 * inline a static function that we later use in an alias. - ajax
69 */
70#if defined(__GNUC__)
71#  define PUBLIC __attribute__((visibility("default")))
72#  define USED __attribute__((used))
73#else
74#  define PUBLIC
75#  define USED
76#endif
77
78
79
80#define GLX_MAJOR_VERSION 1       /* current version numbers */
81#define GLX_MINOR_VERSION 4
82
83#define __GLX_MAX_TEXTURE_UNITS 32
84
85typedef struct __GLXscreenConfigsRec __GLXscreenConfigs;
86typedef struct __GLXcontextRec __GLXcontext;
87typedef struct __GLXdrawableRec __GLXdrawable;
88typedef struct __GLXdisplayPrivateRec __GLXdisplayPrivate;
89typedef struct _glapi_table __GLapi;
90
91/************************************************************************/
92
93#ifdef GLX_DIRECT_RENDERING
94
95#define containerOf(ptr, type, member)              \
96    (type *)( (char *)ptr - offsetof(type,member) )
97
98extern void DRI_glXUseXFont(Font font, int first, int count, int listbase);
99
100#endif
101
102#if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
103
104/**
105 * Display dependent methods.  This structure is initialized during the
106 * \c driCreateDisplay call.
107 */
108typedef struct __GLXDRIdisplayRec __GLXDRIdisplay;
109typedef struct __GLXDRIscreenRec __GLXDRIscreen;
110typedef struct __GLXDRIdrawableRec __GLXDRIdrawable;
111typedef struct __GLXDRIcontextRec __GLXDRIcontext;
112
113#include "glxextensions.h"
114
115struct __GLXDRIdisplayRec
116{
117    /**
118     * Method to destroy the private DRI display data.
119     */
120   void (*destroyDisplay) (__GLXDRIdisplay * display);
121
122   __GLXscreenConfigs *(*createScreen)(int screen, __GLXdisplayPrivate * priv);
123};
124
125struct __GLXDRIscreenRec {
126
127   void (*destroyScreen)(__GLXscreenConfigs *psc);
128
129   __GLXcontext *(*createContext)(__GLXscreenConfigs *psc,
130				  const __GLcontextModes *mode,
131				  GLXContext shareList, int renderType);
132
133   __GLXDRIdrawable *(*createDrawable)(__GLXscreenConfigs *psc,
134				       XID drawable,
135				       GLXDrawable glxDrawable,
136				       const __GLcontextModes *modes);
137
138   int64_t (*swapBuffers)(__GLXDRIdrawable *pdraw, int64_t target_msc,
139			  int64_t divisor, int64_t remainder);
140   void (*copySubBuffer)(__GLXDRIdrawable *pdraw,
141			 int x, int y, int width, int height);
142   void (*waitX)(__GLXDRIdrawable *pdraw);
143   void (*waitGL)(__GLXDRIdrawable *pdraw);
144   int (*getDrawableMSC)(__GLXscreenConfigs *psc, __GLXDRIdrawable *pdraw,
145			 int64_t *ust, int64_t *msc, int64_t *sbc);
146   int (*waitForMSC)(__GLXDRIdrawable *pdraw, int64_t target_msc,
147		     int64_t divisor, int64_t remainder, int64_t *ust,
148		     int64_t *msc, int64_t *sbc);
149   int (*waitForSBC)(__GLXDRIdrawable *pdraw, int64_t target_sbc, int64_t *ust,
150		     int64_t *msc, int64_t *sbc);
151   int (*setSwapInterval)(__GLXDRIdrawable *pdraw, int interval);
152   int (*getSwapInterval)(__GLXDRIdrawable *pdraw);
153};
154
155struct __GLXDRIcontextRec
156{
157   void (*destroyContext) (__GLXcontext *context);
158   Bool(*bindContext) (__GLXcontext *context, __GLXDRIdrawable *pdraw,
159		       __GLXDRIdrawable *pread);
160   void (*unbindContext) (__GLXcontext *context);
161};
162
163struct __GLXDRIdrawableRec
164{
165   void (*destroyDrawable) (__GLXDRIdrawable * drawable);
166
167   XID xDrawable;
168   XID drawable;
169   __GLXscreenConfigs *psc;
170   GLenum textureTarget;
171   GLenum textureFormat;        /* EXT_texture_from_pixmap support */
172   unsigned long eventMask;
173};
174
175/*
176** Function to create and DRI display data and initialize the display
177** dependent methods.
178*/
179extern __GLXDRIdisplay *driswCreateDisplay(Display * dpy);
180extern __GLXDRIdisplay *driCreateDisplay(Display * dpy);
181extern __GLXDRIdisplay *dri2CreateDisplay(Display * dpy);
182extern void dri2InvalidateBuffers(Display *dpy, XID drawable);
183
184
185/*
186** Functions to obtain driver configuration information from a direct
187** rendering client application
188*/
189extern const char *glXGetScreenDriver(Display * dpy, int scrNum);
190
191extern const char *glXGetDriverConfig(const char *driverName);
192
193#endif
194
195/************************************************************************/
196
197#define __GL_CLIENT_ATTRIB_STACK_DEPTH 16
198
199typedef struct __GLXpixelStoreModeRec
200{
201   GLboolean swapEndian;
202   GLboolean lsbFirst;
203   GLuint rowLength;
204   GLuint imageHeight;
205   GLuint imageDepth;
206   GLuint skipRows;
207   GLuint skipPixels;
208   GLuint skipImages;
209   GLuint alignment;
210} __GLXpixelStoreMode;
211
212
213typedef struct __GLXattributeRec
214{
215   GLuint mask;
216
217    /**
218     * Pixel storage state.  Most of the pixel store mode state is kept
219     * here and used by the client code to manage the packing and
220     * unpacking of data sent to/received from the server.
221     */
222   __GLXpixelStoreMode storePack, storeUnpack;
223
224    /**
225     * Is EXT_vertex_array / GL 1.1 DrawArrays protocol specifically
226     * disabled?
227     */
228   GLboolean NoDrawArraysProtocol;
229
230    /**
231     * Vertex Array storage state.  The vertex array component
232     * state is stored here and is used to manage the packing of
233     * DrawArrays data sent to the server.
234     */
235   struct array_state_vector *array_state;
236} __GLXattribute;
237
238typedef struct __GLXattributeMachineRec
239{
240   __GLXattribute *stack[__GL_CLIENT_ATTRIB_STACK_DEPTH];
241   __GLXattribute **stackPointer;
242} __GLXattributeMachine;
243
244struct glx_context_vtable {
245   void (*bind_tex_image)(Display * dpy,
246			  GLXDrawable drawable,
247			  int buffer, const int *attrib_list);
248   void (*release_tex_image)(Display * dpy, GLXDrawable drawable, int buffer);
249
250};
251
252/**
253 * GLX state that needs to be kept on the client.  One of these records
254 * exist for each context that has been made current by this client.
255 */
256struct __GLXcontextRec
257{
258    /**
259     * \name Drawing command buffer.
260     *
261     * Drawing commands are packed into this buffer before being sent as a
262     * single GLX protocol request.  The buffer is sent when it overflows or
263     * is flushed by \c __glXFlushRenderBuffer.  \c pc is the next location
264     * in the buffer to be filled.  \c limit is described above in the buffer
265     * slop discussion.
266     *
267     * Commands that require large amounts of data to be transfered will
268     * also use this buffer to hold a header that describes the large
269     * command.
270     *
271     * These must be the first 6 fields since they are static initialized
272     * in the dummy context in glxext.c
273     */
274   /*@{ */
275   GLubyte *buf;
276   GLubyte *pc;
277   GLubyte *limit;
278   GLubyte *bufEnd;
279   GLint bufSize;
280   /*@} */
281
282    /**
283     * The XID of this rendering context.  When the context is created a
284     * new XID is allocated.  This is set to None when the context is
285     * destroyed but is still current to some thread. In this case the
286     * context will be freed on next MakeCurrent.
287     */
288   XID xid;
289
290    /**
291     * The XID of the \c shareList context.
292     */
293   XID share_xid;
294
295    /**
296     * Screen number.
297     */
298   GLint screen;
299   __GLXscreenConfigs *psc;
300
301    /**
302     * \c GL_TRUE if the context was created with ImportContext, which
303     * means the server-side context was created by another X client.
304     */
305   GLboolean imported;
306
307    /**
308     * The context tag returned by MakeCurrent when this context is made
309     * current. This tag is used to identify the context that a thread has
310     * current so that proper server context management can be done.  It is
311     * used for all context specific commands (i.e., \c Render, \c RenderLarge,
312     * \c WaitX, \c WaitGL, \c UseXFont, and \c MakeCurrent (for the old
313     * context)).
314     */
315   GLXContextTag currentContextTag;
316
317    /**
318     * \name Rendering mode
319     *
320     * The rendering mode is kept on the client as well as the server.
321     * When \c glRenderMode is called, the buffer associated with the
322     * previous rendering mode (feedback or select) is filled.
323     */
324   /*@{ */
325   GLenum renderMode;
326   GLfloat *feedbackBuf;
327   GLuint *selectBuf;
328   /*@} */
329
330    /**
331     * This is \c GL_TRUE if the pixel unpack modes are such that an image
332     * can be unpacked from the clients memory by just copying.  It may
333     * still be true that the server will have to do some work.  This
334     * just promises that a straight copy will fetch the correct bytes.
335     */
336   GLboolean fastImageUnpack;
337
338    /**
339     * Fill newImage with the unpacked form of \c oldImage getting it
340     * ready for transport to the server.
341     */
342   void (*fillImage) (__GLXcontext *, GLint, GLint, GLint, GLint, GLenum,
343                      GLenum, const GLvoid *, GLubyte *, GLubyte *);
344
345    /**
346     * Client side attribs.
347     */
348   __GLXattributeMachine attributes;
349
350    /**
351     * Client side error code.  This is set when client side gl API
352     * routines need to set an error because of a bad enumerant or
353     * running out of memory, etc.
354     */
355   GLenum error;
356
357    /**
358     * Whether this context does direct rendering.
359     */
360   Bool isDirect;
361
362    /**
363     * \c dpy of current display for this context.  Will be \c NULL if not
364     * current to any display, or if this is the "dummy context".
365     */
366   Display *currentDpy;
367
368    /**
369     * The current drawable for this context.  Will be None if this
370     * context is not current to any drawable.  currentReadable is below.
371     */
372   GLXDrawable currentDrawable;
373
374    /**
375     * \name GL Constant Strings
376     *
377     * Constant strings that describe the server implementation
378     * These pertain to GL attributes, not to be confused with
379     * GLX versioning attributes.
380     */
381   /*@{ */
382   GLubyte *vendor;
383   GLubyte *renderer;
384   GLubyte *version;
385   GLubyte *extensions;
386   /*@} */
387
388    /**
389     * Maximum small render command size.  This is the smaller of 64k and
390     * the size of the above buffer.
391     */
392   GLint maxSmallRenderCommandSize;
393
394    /**
395     * Major opcode for the extension.  Copied here so a lookup isn't
396     * needed.
397     */
398   GLint majorOpcode;
399
400    /**
401     * Pointer to the mode used to create this context.
402     */
403   const __GLcontextModes *mode;
404
405#ifdef GLX_DIRECT_RENDERING
406#ifdef GLX_USE_APPLEGL
407   void *driContext;
408   Bool do_destroy;
409#else
410   __GLXDRIcontext *driContext;
411#endif
412#endif
413
414    /**
415     * The current read-drawable for this context.  Will be None if this
416     * context is not current to any drawable.
417     *
418     * \since Internal API version 20030606.
419     */
420   GLXDrawable currentReadable;
421
422   /**
423    * Pointer to client-state data that is private to libGL.  This is only
424    * used for indirect rendering contexts.
425    *
426    * No internal API version change was made for this change.  Client-side
427    * drivers should NEVER use this data or even care that it exists.
428    */
429   void *client_state_private;
430
431   /**
432    * Stored value for \c glXQueryContext attribute \c GLX_RENDER_TYPE.
433    */
434   int renderType;
435
436   /**
437    * \name Raw server GL version
438    *
439    * True core GL version supported by the server.  This is the raw value
440    * returned by the server, and it may not reflect what is actually
441    * supported (or reported) by the client-side library.
442    */
443   /*@{ */
444   int server_major;        /**< Major version number. */
445   int server_minor;        /**< Minor version number. */
446   /*@} */
447
448   /**
449    * Thread ID we're currently current in. Zero if none.
450    */
451   unsigned long thread_id;
452
453   char gl_extension_bits[__GL_EXT_BYTES];
454
455   const struct glx_context_vtable *vtable;
456};
457
458extern Bool
459glx_context_init(__GLXcontext *gc,
460		 __GLXscreenConfigs *psc, const __GLcontextModes *fbconfig);
461
462#define __glXSetError(gc,code)  \
463   if (!(gc)->error) {          \
464      (gc)->error = code;       \
465   }
466
467extern void __glFreeAttributeState(__GLXcontext *);
468
469/************************************************************************/
470
471/**
472 * The size of the largest drawing command known to the implementation
473 * that will use the GLXRender GLX command.  In this case it is
474 * \c glPolygonStipple.
475 */
476#define __GLX_MAX_SMALL_RENDER_CMD_SIZE 156
477
478/**
479 * To keep the implementation fast, the code uses a "limit" pointer
480 * to determine when the drawing command buffer is too full to hold
481 * another fixed size command.  This constant defines the amount of
482 * space that must always be available in the drawing command buffer
483 * at all times for the implementation to work.  It is important that
484 * the number be just large enough, but not so large as to reduce the
485 * efficacy of the buffer.  The "+32" is just to keep the code working
486 * in case somebody counts wrong.
487 */
488#define __GLX_BUFFER_LIMIT_SIZE (__GLX_MAX_SMALL_RENDER_CMD_SIZE + 32)
489
490/**
491 * This implementation uses a smaller threshold for switching
492 * to the RenderLarge protocol than the protcol requires so that
493 * large copies don't occur.
494 */
495#define __GLX_RENDER_CMD_SIZE_LIMIT 4096
496
497/**
498 * One of these records exists per screen of the display.  It contains
499 * a pointer to the config data for that screen (if the screen supports GL).
500 */
501struct __GLXscreenConfigsRec
502{
503    /**
504     * GLX extension string reported by the X-server.
505     */
506   const char *serverGLXexts;
507
508    /**
509     * GLX extension string to be reported to applications.  This is the
510     * set of extensions that the application can actually use.
511     */
512   char *effectiveGLXexts;
513
514   __GLXdisplayPrivate *display;
515
516#if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
517    /**
518     * Per screen direct rendering interface functions and data.
519     */
520   Display *dpy;
521   int scr;
522
523   __GLXDRIscreen *driScreen;
524#endif
525
526    /**
527     * Linked list of glx visuals and  fbconfigs for this screen.
528     */
529   __GLcontextModes *visuals, *configs;
530
531    /**
532     * Per-screen dynamic GLX extension tracking.  The \c direct_support
533     * field only contains enough bits for 64 extensions.  Should libGL
534     * ever need to track more than 64 GLX extensions, we can safely grow
535     * this field.  The \c __GLXscreenConfigs structure is not used outside
536     * libGL.
537     */
538   /*@{ */
539   unsigned char direct_support[8];
540   GLboolean ext_list_first_time;
541   /*@} */
542
543};
544
545/**
546 * Per display private data.  One of these records exists for each display
547 * that is using the OpenGL (GLX) extension.
548 */
549struct __GLXdisplayPrivateRec
550{
551   /* The extension protocol codes */
552   XExtCodes *codes;
553   struct __GLXdisplayPrivateRec *next;
554
555    /**
556     * Back pointer to the display
557     */
558   Display *dpy;
559
560    /**
561     * The \c majorOpcode is common to all connections to the same server.
562     * It is also copied into the context structure.
563     */
564   int majorOpcode;
565
566    /**
567     * \name Server Version
568     *
569     * Major and minor version returned by the server during initialization.
570     */
571   /*@{ */
572   int majorVersion, minorVersion;
573   /*@} */
574
575    /**
576     * \name Storage for the servers GLX vendor and versions strings.
577     *
578     * These are the same for all screens on this display. These fields will
579     * be filled in on demand.
580     */
581   /*@{ */
582   const char *serverGLXvendor;
583   const char *serverGLXversion;
584   /*@} */
585
586    /**
587     * Configurations of visuals for all screens on this display.
588     * Also, per screen data which now includes the server \c GLX_EXTENSION
589     * string.
590     */
591   __GLXscreenConfigs **screenConfigs;
592
593#if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
594   __glxHashTable *drawHash;
595
596    /**
597     * Per display direct rendering interface functions and data.
598     */
599   __GLXDRIdisplay *driswDisplay;
600   __GLXDRIdisplay *driDisplay;
601   __GLXDRIdisplay *dri2Display;
602#endif
603};
604
605extern int
606glx_screen_init(__GLXscreenConfigs *psc,
607		int screen, __GLXdisplayPrivate * priv);
608
609#if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
610extern __GLXDRIdrawable *
611dri2GetGlxDrawableFromXDrawableId(Display *dpy, XID id);
612#endif
613
614extern GLubyte *__glXFlushRenderBuffer(__GLXcontext *, GLubyte *);
615
616extern void __glXSendLargeChunk(__GLXcontext * gc, GLint requestNumber,
617                                GLint totalRequests,
618                                const GLvoid * data, GLint dataLen);
619
620extern void __glXSendLargeCommand(__GLXcontext *, const GLvoid *, GLint,
621                                  const GLvoid *, GLint);
622
623/* Initialize the GLX extension for dpy */
624extern __GLXdisplayPrivate *__glXInitialize(Display *);
625
626extern void __glXPreferEGL(int state);
627
628/************************************************************************/
629
630extern int __glXDebug;
631
632/* This is per-thread storage in an MT environment */
633#if defined( PTHREADS )
634
635extern void __glXSetCurrentContext(__GLXcontext * c);
636
637# if defined( GLX_USE_TLS )
638
639extern __thread void *__glX_tls_Context
640   __attribute__ ((tls_model("initial-exec")));
641
642#  define __glXGetCurrentContext() __glX_tls_Context
643
644# else
645
646extern __GLXcontext *__glXGetCurrentContext(void);
647
648# endif /* defined( GLX_USE_TLS ) */
649
650#else
651
652extern __GLXcontext *__glXcurrentContext;
653#define __glXGetCurrentContext() __glXcurrentContext
654#define __glXSetCurrentContext(gc) __glXcurrentContext = gc
655
656#endif /* defined( PTHREADS ) */
657
658extern void __glXSetCurrentContextNull(void);
659
660extern void __glXFreeContext(__GLXcontext *);
661
662
663/*
664** Global lock for all threads in this address space using the GLX
665** extension
666*/
667#if defined( PTHREADS )
668extern pthread_mutex_t __glXmutex;
669#define __glXLock()    pthread_mutex_lock(&__glXmutex)
670#define __glXUnlock()  pthread_mutex_unlock(&__glXmutex)
671#else
672#define __glXLock()
673#define __glXUnlock()
674#endif
675
676/*
677** Setup for a command.  Initialize the extension for dpy if necessary.
678*/
679extern CARD8 __glXSetupForCommand(Display * dpy);
680
681/************************************************************************/
682
683/*
684** Data conversion and packing support.
685*/
686
687extern const GLuint __glXDefaultPixelStore[9];
688
689/* Send an image to the server using RenderLarge. */
690extern void __glXSendLargeImage(__GLXcontext * gc, GLint compsize, GLint dim,
691                                GLint width, GLint height, GLint depth,
692                                GLenum format, GLenum type,
693                                const GLvoid * src, GLubyte * pc,
694                                GLubyte * modes);
695
696/* Return the size, in bytes, of some pixel data */
697extern GLint __glImageSize(GLint, GLint, GLint, GLenum, GLenum, GLenum);
698
699/* Return the number of elements per group of a specified format*/
700extern GLint __glElementsPerGroup(GLenum format, GLenum type);
701
702/* Return the number of bytes per element, based on the element type (other
703** than GL_BITMAP).
704*/
705extern GLint __glBytesPerElement(GLenum type);
706
707/*
708** Fill the transport buffer with the data from the users buffer,
709** applying some of the pixel store modes (unpack modes) to the data
710** first.  As a side effect of this call, the "modes" field is
711** updated to contain the modes needed by the server to decode the
712** sent data.
713*/
714extern void __glFillImage(__GLXcontext *, GLint, GLint, GLint, GLint, GLenum,
715                          GLenum, const GLvoid *, GLubyte *, GLubyte *);
716
717/* Copy map data with a stride into a packed buffer */
718extern void __glFillMap1f(GLint, GLint, GLint, const GLfloat *, GLubyte *);
719extern void __glFillMap1d(GLint, GLint, GLint, const GLdouble *, GLubyte *);
720extern void __glFillMap2f(GLint, GLint, GLint, GLint, GLint,
721                          const GLfloat *, GLfloat *);
722extern void __glFillMap2d(GLint, GLint, GLint, GLint, GLint,
723                          const GLdouble *, GLdouble *);
724
725/*
726** Empty an image out of the reply buffer into the clients memory applying
727** the pack modes to pack back into the clients requested format.
728*/
729extern void __glEmptyImage(__GLXcontext *, GLint, GLint, GLint, GLint, GLenum,
730                           GLenum, const GLubyte *, GLvoid *);
731
732
733/*
734** Allocate and Initialize Vertex Array client state, and free.
735*/
736extern void __glXInitVertexArrayState(__GLXcontext *);
737extern void __glXFreeVertexArrayState(__GLXcontext *);
738
739/*
740** Inform the Server of the major and minor numbers and of the client
741** libraries extension string.
742*/
743extern void __glXClientInfo(Display * dpy, int opcode);
744
745/************************************************************************/
746
747/*
748** Declarations that should be in Xlib
749*/
750#ifdef __GL_USE_OUR_PROTOTYPES
751extern void _XFlush(Display *);
752extern Status _XReply(Display *, xReply *, int, Bool);
753extern void _XRead(Display *, void *, long);
754extern void _XSend(Display *, const void *, long);
755#endif
756
757
758extern void __glXInitializeVisualConfigFromTags(__GLcontextModes * config,
759                                                int count, const INT32 * bp,
760                                                Bool tagged_only,
761                                                Bool fbconfig_style_tags);
762
763extern char *__glXQueryServerString(Display * dpy, int opcode,
764                                    CARD32 screen, CARD32 name);
765extern char *__glXGetString(Display * dpy, int opcode,
766                            CARD32 screen, CARD32 name);
767
768extern char *__glXstrdup(const char *str);
769
770
771extern const char __glXGLClientVersion[];
772extern const char __glXGLClientExtensions[];
773
774/* Get the unadjusted system time */
775extern int __glXGetUST(int64_t * ust);
776
777extern GLboolean __glXGetMscRateOML(Display * dpy, GLXDrawable drawable,
778                                    int32_t * numerator,
779                                    int32_t * denominator);
780
781#if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
782extern GLboolean
783__glxGetMscRate(__GLXDRIdrawable *glxDraw,
784		int32_t * numerator, int32_t * denominator);
785
786/* So that dri2.c:DRI2WireToEvent() can access
787 * glx_info->codes->first_event */
788XExtDisplayInfo *__glXFindDisplay (Display *dpy);
789
790extern __GLXDRIdrawable *
791GetGLXDRIDrawable(Display *dpy, GLXDrawable drawable, int *const scrn_num);
792
793#endif
794
795#endif /* !__GLX_client_h__ */
796