glxclient.h revision 4dbd13cb3f5aeff6ddc85fd091b4677369c19778 
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/Xfuncproto.h>
43#include <X11/extensions/extutil.h>
44#define GLX_GLXEXT_PROTOTYPES
45#include <GL/glx.h>
46#include <GL/glxext.h>
47#include <string.h>
48#include <stdlib.h>
49#include <stdio.h>
50#ifdef WIN32
51#include <stdint.h>
52#endif
53#include "GL/glxproto.h"
54#include "glapi/glapitable.h"
55#include "glxconfig.h"
56#include "glxhash.h"
57#if defined( PTHREADS )
58# include <pthread.h>
59#endif
60
61#include "glxextensions.h"
62
63#define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0]))
64
65#define GLX_MAJOR_VERSION 1       /* current version numbers */
66#define GLX_MINOR_VERSION 4
67
68#define __GLX_MAX_TEXTURE_UNITS 32
69
70struct glx_display;
71struct glx_context;
72
73/************************************************************************/
74
75#ifdef GLX_DIRECT_RENDERING
76
77extern void DRI_glXUseXFont(struct glx_context *ctx,
78			    Font font, int first, int count, int listbase);
79
80#endif
81
82#if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
83
84/**
85 * Display dependent methods.  This structure is initialized during the
86 * \c driCreateDisplay call.
87 */
88typedef struct __GLXDRIdisplayRec __GLXDRIdisplay;
89typedef struct __GLXDRIscreenRec __GLXDRIscreen;
90typedef struct __GLXDRIdrawableRec __GLXDRIdrawable;
91
92struct __GLXDRIdisplayRec
93{
94    /**
95     * Method to destroy the private DRI display data.
96     */
97   void (*destroyDisplay) (__GLXDRIdisplay * display);
98
99   struct glx_screen *(*createScreen)(int screen, struct glx_display * priv);
100};
101
102struct __GLXDRIscreenRec {
103
104   void (*destroyScreen)(struct glx_screen *psc);
105
106   struct glx_context *(*createContext)(struct glx_screen *psc,
107					struct glx_config *config,
108					struct glx_context *shareList,
109					int renderType);
110
111   __GLXDRIdrawable *(*createDrawable)(struct glx_screen *psc,
112				       XID drawable,
113				       GLXDrawable glxDrawable,
114				       struct glx_config *config);
115
116   int64_t (*swapBuffers)(__GLXDRIdrawable *pdraw, int64_t target_msc,
117			  int64_t divisor, int64_t remainder);
118   void (*copySubBuffer)(__GLXDRIdrawable *pdraw,
119			 int x, int y, int width, int height);
120   int (*getDrawableMSC)(struct glx_screen *psc, __GLXDRIdrawable *pdraw,
121			 int64_t *ust, int64_t *msc, int64_t *sbc);
122   int (*waitForMSC)(__GLXDRIdrawable *pdraw, int64_t target_msc,
123		     int64_t divisor, int64_t remainder, int64_t *ust,
124		     int64_t *msc, int64_t *sbc);
125   int (*waitForSBC)(__GLXDRIdrawable *pdraw, int64_t target_sbc, int64_t *ust,
126		     int64_t *msc, int64_t *sbc);
127   int (*setSwapInterval)(__GLXDRIdrawable *pdraw, int interval);
128   int (*getSwapInterval)(__GLXDRIdrawable *pdraw);
129};
130
131struct __GLXDRIdrawableRec
132{
133   void (*destroyDrawable) (__GLXDRIdrawable * drawable);
134
135   XID xDrawable;
136   XID drawable;
137   struct glx_screen *psc;
138   GLenum textureTarget;
139   GLenum textureFormat;        /* EXT_texture_from_pixmap support */
140   unsigned long eventMask;
141   int refcount;
142};
143
144/*
145** Function to create and DRI display data and initialize the display
146** dependent methods.
147*/
148extern __GLXDRIdisplay *driswCreateDisplay(Display * dpy);
149extern __GLXDRIdisplay *driCreateDisplay(Display * dpy);
150extern __GLXDRIdisplay *dri2CreateDisplay(Display * dpy);
151extern void dri2InvalidateBuffers(Display *dpy, XID drawable);
152extern unsigned dri2GetSwapEventType(Display *dpy, XID drawable);
153
154
155/*
156** Functions to obtain driver configuration information from a direct
157** rendering client application
158*/
159extern const char *glXGetScreenDriver(Display * dpy, int scrNum);
160
161extern const char *glXGetDriverConfig(const char *driverName);
162
163#endif
164
165/************************************************************************/
166
167#define __GL_CLIENT_ATTRIB_STACK_DEPTH 16
168
169typedef struct __GLXpixelStoreModeRec
170{
171   GLboolean swapEndian;
172   GLboolean lsbFirst;
173   GLuint rowLength;
174   GLuint imageHeight;
175   GLuint imageDepth;
176   GLuint skipRows;
177   GLuint skipPixels;
178   GLuint skipImages;
179   GLuint alignment;
180} __GLXpixelStoreMode;
181
182
183typedef struct __GLXattributeRec
184{
185   GLuint mask;
186
187    /**
188     * Pixel storage state.  Most of the pixel store mode state is kept
189     * here and used by the client code to manage the packing and
190     * unpacking of data sent to/received from the server.
191     */
192   __GLXpixelStoreMode storePack, storeUnpack;
193
194    /**
195     * Is EXT_vertex_array / GL 1.1 DrawArrays protocol specifically
196     * disabled?
197     */
198   GLboolean NoDrawArraysProtocol;
199
200    /**
201     * Vertex Array storage state.  The vertex array component
202     * state is stored here and is used to manage the packing of
203     * DrawArrays data sent to the server.
204     */
205   struct array_state_vector *array_state;
206} __GLXattribute;
207
208typedef struct __GLXattributeMachineRec
209{
210   __GLXattribute *stack[__GL_CLIENT_ATTRIB_STACK_DEPTH];
211   __GLXattribute **stackPointer;
212} __GLXattributeMachine;
213
214struct glx_context_vtable {
215   void (*destroy)(struct glx_context *ctx);
216   int (*bind)(struct glx_context *context, struct glx_context *old,
217	       GLXDrawable draw, GLXDrawable read);
218   void (*unbind)(struct glx_context *context, struct glx_context *new);
219   void (*wait_gl)(struct glx_context *ctx);
220   void (*wait_x)(struct glx_context *ctx);
221   void (*use_x_font)(struct glx_context *ctx,
222		      Font font, int first, int count, int listBase);
223   void (*bind_tex_image)(Display * dpy,
224			  GLXDrawable drawable,
225			  int buffer, const int *attrib_list);
226   void (*release_tex_image)(Display * dpy, GLXDrawable drawable, int buffer);
227   void * (*get_proc_address)(const char *symbol);
228};
229
230/**
231 * GLX state that needs to be kept on the client.  One of these records
232 * exist for each context that has been made current by this client.
233 */
234struct glx_context
235{
236    /**
237     * \name Drawing command buffer.
238     *
239     * Drawing commands are packed into this buffer before being sent as a
240     * single GLX protocol request.  The buffer is sent when it overflows or
241     * is flushed by \c __glXFlushRenderBuffer.  \c pc is the next location
242     * in the buffer to be filled.  \c limit is described above in the buffer
243     * slop discussion.
244     *
245     * Commands that require large amounts of data to be transfered will
246     * also use this buffer to hold a header that describes the large
247     * command.
248     *
249     * These must be the first 6 fields since they are static initialized
250     * in the dummy context in glxext.c
251     */
252   /*@{ */
253   GLubyte *buf;
254   GLubyte *pc;
255   GLubyte *limit;
256   GLubyte *bufEnd;
257   GLint bufSize;
258   /*@} */
259
260   const struct glx_context_vtable *vtable;
261
262    /**
263     * The XID of this rendering context.  When the context is created a
264     * new XID is allocated.  This is set to None when the context is
265     * destroyed but is still current to some thread. In this case the
266     * context will be freed on next MakeCurrent.
267     */
268   XID xid;
269
270    /**
271     * The XID of the \c shareList context.
272     */
273   XID share_xid;
274
275    /**
276     * Screen number.
277     */
278   GLint screen;
279   struct glx_screen *psc;
280
281    /**
282     * \c GL_TRUE if the context was created with ImportContext, which
283     * means the server-side context was created by another X client.
284     */
285   GLboolean imported;
286
287    /**
288     * The context tag returned by MakeCurrent when this context is made
289     * current. This tag is used to identify the context that a thread has
290     * current so that proper server context management can be done.  It is
291     * used for all context specific commands (i.e., \c Render, \c RenderLarge,
292     * \c WaitX, \c WaitGL, \c UseXFont, and \c MakeCurrent (for the old
293     * context)).
294     */
295   GLXContextTag currentContextTag;
296
297    /**
298     * \name Rendering mode
299     *
300     * The rendering mode is kept on the client as well as the server.
301     * When \c glRenderMode is called, the buffer associated with the
302     * previous rendering mode (feedback or select) is filled.
303     */
304   /*@{ */
305   GLenum renderMode;
306   GLfloat *feedbackBuf;
307   GLuint *selectBuf;
308   /*@} */
309
310    /**
311     * Fill newImage with the unpacked form of \c oldImage getting it
312     * ready for transport to the server.
313     */
314   void (*fillImage) (struct glx_context *, GLint, GLint, GLint, GLint, GLenum,
315                      GLenum, const GLvoid *, GLubyte *, GLubyte *);
316
317    /**
318     * Client side attribs.
319     */
320   __GLXattributeMachine attributes;
321
322    /**
323     * Client side error code.  This is set when client side gl API
324     * routines need to set an error because of a bad enumerant or
325     * running out of memory, etc.
326     */
327   GLenum error;
328
329    /**
330     * Whether this context does direct rendering.
331     */
332   Bool isDirect;
333
334#if defined(GLX_DIRECT_RENDERING) && defined(GLX_USE_APPLEGL)
335   void *driContext;
336#endif
337
338    /**
339     * \c dpy of current display for this context.  Will be \c NULL if not
340     * current to any display, or if this is the "dummy context".
341     */
342   Display *currentDpy;
343
344    /**
345     * The current drawable for this context.  Will be None if this
346     * context is not current to any drawable.  currentReadable is below.
347     */
348   GLXDrawable currentDrawable;
349
350    /**
351     * \name GL Constant Strings
352     *
353     * Constant strings that describe the server implementation
354     * These pertain to GL attributes, not to be confused with
355     * GLX versioning attributes.
356     */
357   /*@{ */
358   GLubyte *vendor;
359   GLubyte *renderer;
360   GLubyte *version;
361   GLubyte *extensions;
362   /*@} */
363
364    /**
365     * Maximum small render command size.  This is the smaller of 64k and
366     * the size of the above buffer.
367     */
368   GLint maxSmallRenderCommandSize;
369
370    /**
371     * Major opcode for the extension.  Copied here so a lookup isn't
372     * needed.
373     */
374   GLint majorOpcode;
375
376    /**
377     * Pointer to the config used to create this context.
378     */
379   struct glx_config *config;
380
381    /**
382     * The current read-drawable for this context.  Will be None if this
383     * context is not current to any drawable.
384     *
385     * \since Internal API version 20030606.
386     */
387   GLXDrawable currentReadable;
388
389   /**
390    * Pointer to client-state data that is private to libGL.  This is only
391    * used for indirect rendering contexts.
392    *
393    * No internal API version change was made for this change.  Client-side
394    * drivers should NEVER use this data or even care that it exists.
395    */
396   void *client_state_private;
397
398   /**
399    * Stored value for \c glXQueryContext attribute \c GLX_RENDER_TYPE.
400    */
401   int renderType;
402
403   /**
404    * \name Raw server GL version
405    *
406    * True core GL version supported by the server.  This is the raw value
407    * returned by the server, and it may not reflect what is actually
408    * supported (or reported) by the client-side library.
409    */
410   /*@{ */
411   int server_major;        /**< Major version number. */
412   int server_minor;        /**< Minor version number. */
413   /*@} */
414
415   /**
416    * Number of threads we're currently current in.
417    */
418   unsigned long thread_refcount;
419
420   char gl_extension_bits[__GL_EXT_BYTES];
421};
422
423extern Bool
424glx_context_init(struct glx_context *gc,
425		 struct glx_screen *psc, struct glx_config *fbconfig);
426
427#define __glXSetError(gc,code)  \
428   if (!(gc)->error) {          \
429      (gc)->error = code;       \
430   }
431
432extern void __glFreeAttributeState(struct glx_context *);
433
434/************************************************************************/
435
436/**
437 * The size of the largest drawing command known to the implementation
438 * that will use the GLXRender GLX command.  In this case it is
439 * \c glPolygonStipple.
440 */
441#define __GLX_MAX_SMALL_RENDER_CMD_SIZE 156
442
443/**
444 * To keep the implementation fast, the code uses a "limit" pointer
445 * to determine when the drawing command buffer is too full to hold
446 * another fixed size command.  This constant defines the amount of
447 * space that must always be available in the drawing command buffer
448 * at all times for the implementation to work.  It is important that
449 * the number be just large enough, but not so large as to reduce the
450 * efficacy of the buffer.  The "+32" is just to keep the code working
451 * in case somebody counts wrong.
452 */
453#define __GLX_BUFFER_LIMIT_SIZE (__GLX_MAX_SMALL_RENDER_CMD_SIZE + 32)
454
455/**
456 * This implementation uses a smaller threshold for switching
457 * to the RenderLarge protocol than the protcol requires so that
458 * large copies don't occur.
459 */
460#define __GLX_RENDER_CMD_SIZE_LIMIT 4096
461
462/**
463 * One of these records exists per screen of the display.  It contains
464 * a pointer to the config data for that screen (if the screen supports GL).
465 */
466struct glx_screen_vtable {
467   struct glx_context *(*create_context)(struct glx_screen *psc,
468					 struct glx_config *config,
469					 struct glx_context *shareList,
470					 int renderType);
471};
472
473struct glx_screen
474{
475   const struct glx_screen_vtable *vtable;
476
477    /**
478     * GLX extension string reported by the X-server.
479     */
480   const char *serverGLXexts;
481
482    /**
483     * GLX extension string to be reported to applications.  This is the
484     * set of extensions that the application can actually use.
485     */
486   char *effectiveGLXexts;
487
488   struct glx_display *display;
489
490   Display *dpy;
491   int scr;
492
493#if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
494    /**
495     * Per screen direct rendering interface functions and data.
496     */
497   __GLXDRIscreen *driScreen;
498#endif
499
500    /**
501     * Linked list of glx visuals and  fbconfigs for this screen.
502     */
503   struct glx_config *visuals, *configs;
504
505    /**
506     * Per-screen dynamic GLX extension tracking.  The \c direct_support
507     * field only contains enough bits for 64 extensions.  Should libGL
508     * ever need to track more than 64 GLX extensions, we can safely grow
509     * this field.  The \c struct glx_screen structure is not used outside
510     * libGL.
511     */
512   /*@{ */
513   unsigned char direct_support[8];
514   GLboolean ext_list_first_time;
515   /*@} */
516
517};
518
519/**
520 * Per display private data.  One of these records exists for each display
521 * that is using the OpenGL (GLX) extension.
522 */
523struct glx_display
524{
525   /* The extension protocol codes */
526   XExtCodes *codes;
527   struct glx_display *next;
528
529    /**
530     * Back pointer to the display
531     */
532   Display *dpy;
533
534    /**
535     * The \c majorOpcode is common to all connections to the same server.
536     * It is also copied into the context structure.
537     */
538   int majorOpcode;
539
540    /**
541     * \name Server Version
542     *
543     * Major and minor version returned by the server during initialization.
544     */
545   /*@{ */
546   int majorVersion, minorVersion;
547   /*@} */
548
549    /**
550     * \name Storage for the servers GLX vendor and versions strings.
551     *
552     * These are the same for all screens on this display. These fields will
553     * be filled in on demand.
554     */
555   /*@{ */
556   const char *serverGLXvendor;
557   const char *serverGLXversion;
558   /*@} */
559
560    /**
561     * Configurations of visuals for all screens on this display.
562     * Also, per screen data which now includes the server \c GLX_EXTENSION
563     * string.
564     */
565   struct glx_screen **screens;
566
567   __glxHashTable *glXDrawHash;
568
569#if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
570   __glxHashTable *drawHash;
571
572    /**
573     * Per display direct rendering interface functions and data.
574     */
575   __GLXDRIdisplay *driswDisplay;
576   __GLXDRIdisplay *driDisplay;
577   __GLXDRIdisplay *dri2Display;
578#endif
579};
580
581struct glx_drawable {
582   XID xDrawable;
583   XID drawable;
584
585   uint32_t lastEventSbc;
586   int64_t eventSbcWrap;
587};
588
589extern int
590glx_screen_init(struct glx_screen *psc,
591		int screen, struct glx_display * priv);
592extern void
593glx_screen_cleanup(struct glx_screen *psc);
594
595#if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
596extern __GLXDRIdrawable *
597dri2GetGlxDrawableFromXDrawableId(Display *dpy, XID id);
598#endif
599
600extern GLubyte *__glXFlushRenderBuffer(struct glx_context *, GLubyte *);
601
602extern void __glXSendLargeChunk(struct glx_context * gc, GLint requestNumber,
603                                GLint totalRequests,
604                                const GLvoid * data, GLint dataLen);
605
606extern void __glXSendLargeCommand(struct glx_context *, const GLvoid *, GLint,
607                                  const GLvoid *, GLint);
608
609/* Initialize the GLX extension for dpy */
610extern struct glx_display *__glXInitialize(Display *);
611
612extern void __glXPreferEGL(int state);
613
614/************************************************************************/
615
616extern int __glXDebug;
617
618/* This is per-thread storage in an MT environment */
619#if defined( PTHREADS )
620
621extern void __glXSetCurrentContext(struct glx_context * c);
622
623# if defined( GLX_USE_TLS )
624
625extern __thread void *__glX_tls_Context
626   __attribute__ ((tls_model("initial-exec")));
627
628#  define __glXGetCurrentContext() __glX_tls_Context
629
630# else
631
632extern struct glx_context *__glXGetCurrentContext(void);
633
634# endif /* defined( GLX_USE_TLS ) */
635
636#else
637
638extern struct glx_context *__glXcurrentContext;
639#define __glXGetCurrentContext() __glXcurrentContext
640#define __glXSetCurrentContext(gc) __glXcurrentContext = gc
641
642#endif /* defined( PTHREADS ) */
643
644extern void __glXSetCurrentContextNull(void);
645
646
647/*
648** Global lock for all threads in this address space using the GLX
649** extension
650*/
651#if defined( PTHREADS )
652extern pthread_mutex_t __glXmutex;
653#define __glXLock()    pthread_mutex_lock(&__glXmutex)
654#define __glXUnlock()  pthread_mutex_unlock(&__glXmutex)
655#else
656#define __glXLock()
657#define __glXUnlock()
658#endif
659
660/*
661** Setup for a command.  Initialize the extension for dpy if necessary.
662*/
663extern CARD8 __glXSetupForCommand(Display * dpy);
664
665/************************************************************************/
666
667/*
668** Data conversion and packing support.
669*/
670
671extern const GLuint __glXDefaultPixelStore[9];
672
673/* Send an image to the server using RenderLarge. */
674extern void __glXSendLargeImage(struct glx_context * gc, GLint compsize, GLint dim,
675                                GLint width, GLint height, GLint depth,
676                                GLenum format, GLenum type,
677                                const GLvoid * src, GLubyte * pc,
678                                GLubyte * modes);
679
680/* Return the size, in bytes, of some pixel data */
681extern GLint __glImageSize(GLint, GLint, GLint, GLenum, GLenum, GLenum);
682
683/* Return the number of elements per group of a specified format*/
684extern GLint __glElementsPerGroup(GLenum format, GLenum type);
685
686/* Return the number of bytes per element, based on the element type (other
687** than GL_BITMAP).
688*/
689extern GLint __glBytesPerElement(GLenum type);
690
691/*
692** Fill the transport buffer with the data from the users buffer,
693** applying some of the pixel store modes (unpack modes) to the data
694** first.  As a side effect of this call, the "modes" field is
695** updated to contain the modes needed by the server to decode the
696** sent data.
697*/
698extern void __glFillImage(struct glx_context *, GLint, GLint, GLint, GLint, GLenum,
699                          GLenum, const GLvoid *, GLubyte *, GLubyte *);
700
701/* Copy map data with a stride into a packed buffer */
702extern void __glFillMap1f(GLint, GLint, GLint, const GLfloat *, GLubyte *);
703extern void __glFillMap1d(GLint, GLint, GLint, const GLdouble *, GLubyte *);
704extern void __glFillMap2f(GLint, GLint, GLint, GLint, GLint,
705                          const GLfloat *, GLfloat *);
706extern void __glFillMap2d(GLint, GLint, GLint, GLint, GLint,
707                          const GLdouble *, GLdouble *);
708
709/*
710** Empty an image out of the reply buffer into the clients memory applying
711** the pack modes to pack back into the clients requested format.
712*/
713extern void __glEmptyImage(struct glx_context *, GLint, GLint, GLint, GLint, GLenum,
714                           GLenum, const GLubyte *, GLvoid *);
715
716
717/*
718** Allocate and Initialize Vertex Array client state, and free.
719*/
720extern void __glXInitVertexArrayState(struct glx_context *);
721extern void __glXFreeVertexArrayState(struct glx_context *);
722
723/*
724** Inform the Server of the major and minor numbers and of the client
725** libraries extension string.
726*/
727extern void __glXClientInfo(Display * dpy, int opcode);
728
729/************************************************************************/
730
731/*
732** Declarations that should be in Xlib
733*/
734#ifdef __GL_USE_OUR_PROTOTYPES
735extern void _XFlush(Display *);
736extern Status _XReply(Display *, xReply *, int, Bool);
737extern void _XRead(Display *, void *, long);
738extern void _XSend(Display *, const void *, long);
739#endif
740
741
742extern void __glXInitializeVisualConfigFromTags(struct glx_config * config,
743                                                int count, const INT32 * bp,
744                                                Bool tagged_only,
745                                                Bool fbconfig_style_tags);
746
747extern char *__glXQueryServerString(Display * dpy, int opcode,
748                                    CARD32 screen, CARD32 name);
749extern char *__glXGetString(Display * dpy, int opcode,
750                            CARD32 screen, CARD32 name);
751
752extern char *__glXstrdup(const char *str);
753
754
755extern const char __glXGLClientVersion[];
756extern const char __glXGLClientExtensions[];
757
758/* Get the unadjusted system time */
759extern int __glXGetUST(int64_t * ust);
760
761extern GLboolean __glXGetMscRateOML(Display * dpy, GLXDrawable drawable,
762                                    int32_t * numerator,
763                                    int32_t * denominator);
764
765#if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
766extern GLboolean
767__glxGetMscRate(__GLXDRIdrawable *glxDraw,
768		int32_t * numerator, int32_t * denominator);
769
770/* So that dri2.c:DRI2WireToEvent() can access
771 * glx_info->codes->first_event */
772XExtDisplayInfo *__glXFindDisplay (Display *dpy);
773
774extern void
775GarbageCollectDRIDrawables(struct glx_screen *psc);
776
777extern __GLXDRIdrawable *
778GetGLXDRIDrawable(Display *dpy, GLXDrawable drawable);
779#endif
780
781#ifdef GLX_USE_APPLEGL
782extern struct glx_screen *
783applegl_create_screen(int screen, struct glx_display * priv);
784
785extern struct glx_context *
786applegl_create_context(struct glx_screen *psc,
787			struct glx_config *mode,
788			struct glx_context *shareList, int renderType);
789
790extern int
791applegl_create_display(struct glx_display *display);
792#endif
793
794
795extern struct glx_drawable *GetGLXDrawable(Display *dpy, GLXDrawable drawable);
796extern int InitGLXDrawable(Display *dpy, struct glx_drawable *glxDraw,
797			   XID xDrawable, GLXDrawable drawable);
798extern void DestroyGLXDrawable(Display *dpy, GLXDrawable drawable);
799
800extern struct glx_context dummyContext;
801
802extern struct glx_screen *
803indirect_create_screen(int screen, struct glx_display * priv);
804extern struct glx_context *
805indirect_create_context(struct glx_screen *psc,
806			struct glx_config *mode,
807			struct glx_context *shareList, int renderType);
808
809#endif /* !__GLX_client_h__ */
810