glxclient.h revision 1fa7789e828d1005e2473fc7cd364bd45eb30843 
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#define NEED_REPLIES
41#define NEED_EVENTS
42#include <X11/Xproto.h>
43#include <X11/Xlibint.h>
44#include <X11/extensions/extutil.h>
45#define GLX_GLXEXT_PROTOTYPES
46#include <GL/glx.h>
47#include <GL/glxext.h>
48#include <string.h>
49#include <stdlib.h>
50#include <stdio.h>
51#ifdef WIN32
52#include <stdint.h>
53#endif
54#include "GL/glxint.h"
55#include "GL/glxproto.h"
56#include "GL/internal/glcore.h"
57#include "glapi/glapitable.h"
58#include "glxhash.h"
59#if defined( PTHREADS )
60# include <pthread.h>
61#endif
62
63#include "glxextensions.h"
64
65
66/* If we build the library with gcc's -fvisibility=hidden flag, we'll
67 * use the PUBLIC macro to mark functions that are to be exported.
68 *
69 * We also need to define a USED attribute, so the optimizer doesn't
70 * inline a static function that we later use in an alias. - ajax
71 */
72#if defined(__GNUC__)
73#  define PUBLIC __attribute__((visibility("default")))
74#  define USED __attribute__((used))
75#else
76#  define PUBLIC
77#  define USED
78#endif
79
80
81
82#define GLX_MAJOR_VERSION 1       /* current version numbers */
83#define GLX_MINOR_VERSION 4
84
85#define __GLX_MAX_TEXTURE_UNITS 32
86
87typedef struct __GLXscreenConfigsRec __GLXscreenConfigs;
88typedef struct __GLXcontextRec __GLXcontext;
89typedef struct __GLXdrawableRec __GLXdrawable;
90typedef struct __GLXdisplayPrivateRec __GLXdisplayPrivate;
91typedef struct _glapi_table __GLapi;
92
93/************************************************************************/
94
95#ifdef GLX_DIRECT_RENDERING
96
97#define containerOf(ptr, type, member)              \
98    (type *)( (char *)ptr - offsetof(type,member) )
99
100extern void DRI_glXUseXFont(Font font, int first, int count, int listbase);
101
102#endif
103
104#if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
105
106#include <GL/internal/dri_interface.h>
107
108/**
109 * Display dependent methods.  This structure is initialized during the
110 * \c driCreateDisplay call.
111 */
112typedef struct __GLXDRIdisplayRec __GLXDRIdisplay;
113typedef struct __GLXDRIscreenRec __GLXDRIscreen;
114typedef struct __GLXDRIdrawableRec __GLXDRIdrawable;
115typedef struct __GLXDRIcontextRec __GLXDRIcontext;
116
117#include "glxextensions.h"
118
119struct __GLXDRIdisplayRec
120{
121    /**
122     * Method to destroy the private DRI display data.
123     */
124   void (*destroyDisplay) (__GLXDRIdisplay * display);
125
126   __GLXDRIscreen *(*createScreen) (__GLXscreenConfigs * psc, int screen,
127                                    __GLXdisplayPrivate * priv);
128};
129
130struct __GLXDRIscreenRec {
131
132   void (*destroyScreen)(__GLXscreenConfigs *psc);
133
134   __GLXDRIcontext *(*createContext)(__GLXscreenConfigs *psc,
135				     const __GLcontextModes *mode,
136				     GLXContext gc,
137				     GLXContext shareList, int renderType);
138
139   __GLXDRIdrawable *(*createDrawable)(__GLXscreenConfigs *psc,
140				       XID drawable,
141				       GLXDrawable glxDrawable,
142				       const __GLcontextModes *modes);
143
144   int64_t (*swapBuffers)(__GLXDRIdrawable *pdraw, int64_t target_msc,
145			  int64_t divisor, int64_t remainder);
146   void (*copySubBuffer)(__GLXDRIdrawable *pdraw,
147			 int x, int y, int width, int height);
148   void (*waitX)(__GLXDRIdrawable *pdraw);
149   void (*waitGL)(__GLXDRIdrawable *pdraw);
150   int (*getDrawableMSC)(__GLXscreenConfigs *psc, __GLXDRIdrawable *pdraw,
151			 int64_t *ust, int64_t *msc, int64_t *sbc);
152   int (*waitForMSC)(__GLXDRIdrawable *pdraw, int64_t target_msc,
153		     int64_t divisor, int64_t remainder, int64_t *ust,
154		     int64_t *msc, int64_t *sbc);
155   int (*waitForSBC)(__GLXDRIdrawable *pdraw, int64_t target_sbc, int64_t *ust,
156		     int64_t *msc, int64_t *sbc);
157   void (*setSwapInterval)(__GLXDRIdrawable *pdraw, int interval);
158   int (*getSwapInterval)(__GLXDRIdrawable *pdraw);
159};
160
161struct __GLXDRIcontextRec
162{
163   void (*destroyContext) (__GLXDRIcontext * context,
164                           __GLXscreenConfigs * psc, Display * dpy);
165     Bool(*bindContext) (__GLXDRIcontext * context, __GLXDRIdrawable * pdraw,
166                         __GLXDRIdrawable * pread);
167
168   void (*unbindContext) (__GLXDRIcontext * context);
169};
170
171struct __GLXDRIdrawableRec
172{
173   void (*destroyDrawable) (__GLXDRIdrawable * drawable);
174
175   XID xDrawable;
176   XID drawable;
177   __GLXscreenConfigs *psc;
178   GLenum textureTarget;
179   __DRIdrawable *driDrawable;
180   GLenum textureFormat;        /* EXT_texture_from_pixmap support */
181};
182
183/*
184** Function to create and DRI display data and initialize the display
185** dependent methods.
186*/
187extern __GLXDRIdisplay *driswCreateDisplay(Display * dpy);
188extern __GLXDRIdisplay *driCreateDisplay(Display * dpy);
189extern __GLXDRIdisplay *dri2CreateDisplay(Display * dpy);
190extern void dri2InvalidateBuffers(Display *dpy, XID drawable);
191
192
193/*
194** Functions to obtain driver configuration information from a direct
195** rendering client application
196*/
197extern const char *glXGetScreenDriver(Display * dpy, int scrNum);
198
199extern const char *glXGetDriverConfig(const char *driverName);
200
201#endif
202
203/************************************************************************/
204
205#define __GL_CLIENT_ATTRIB_STACK_DEPTH 16
206
207typedef struct __GLXpixelStoreModeRec
208{
209   GLboolean swapEndian;
210   GLboolean lsbFirst;
211   GLuint rowLength;
212   GLuint imageHeight;
213   GLuint imageDepth;
214   GLuint skipRows;
215   GLuint skipPixels;
216   GLuint skipImages;
217   GLuint alignment;
218} __GLXpixelStoreMode;
219
220
221typedef struct __GLXattributeRec
222{
223   GLuint mask;
224
225    /**
226     * Pixel storage state.  Most of the pixel store mode state is kept
227     * here and used by the client code to manage the packing and
228     * unpacking of data sent to/received from the server.
229     */
230   __GLXpixelStoreMode storePack, storeUnpack;
231
232    /**
233     * Is EXT_vertex_array / GL 1.1 DrawArrays protocol specifically
234     * disabled?
235     */
236   GLboolean NoDrawArraysProtocol;
237
238    /**
239     * Vertex Array storage state.  The vertex array component
240     * state is stored here and is used to manage the packing of
241     * DrawArrays data sent to the server.
242     */
243   struct array_state_vector *array_state;
244} __GLXattribute;
245
246typedef struct __GLXattributeMachineRec
247{
248   __GLXattribute *stack[__GL_CLIENT_ATTRIB_STACK_DEPTH];
249   __GLXattribute **stackPointer;
250} __GLXattributeMachine;
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     * Record the dpy this context was created on for later freeing
390     */
391   Display *createDpy;
392
393    /**
394     * Maximum small render command size.  This is the smaller of 64k and
395     * the size of the above buffer.
396     */
397   GLint maxSmallRenderCommandSize;
398
399    /**
400     * Major opcode for the extension.  Copied here so a lookup isn't
401     * needed.
402     */
403   GLint majorOpcode;
404
405    /**
406     * Pointer to the mode used to create this context.
407     */
408   const __GLcontextModes *mode;
409
410#ifdef GLX_DIRECT_RENDERING
411#ifdef GLX_USE_APPLEGL
412   void *driContext;
413   Bool do_destroy;
414#else
415   __GLXDRIcontext *driContext;
416   __DRIcontext *__driContext;
417#endif
418#endif
419
420    /**
421     * The current read-drawable for this context.  Will be None if this
422     * context is not current to any drawable.
423     *
424     * \since Internal API version 20030606.
425     */
426   GLXDrawable currentReadable;
427
428   /**
429    * Pointer to client-state data that is private to libGL.  This is only
430    * used for indirect rendering contexts.
431    *
432    * No internal API version change was made for this change.  Client-side
433    * drivers should NEVER use this data or even care that it exists.
434    */
435   void *client_state_private;
436
437   /**
438    * Stored value for \c glXQueryContext attribute \c GLX_RENDER_TYPE.
439    */
440   int renderType;
441
442   /**
443    * \name Raw server GL version
444    *
445    * True core GL version supported by the server.  This is the raw value
446    * returned by the server, and it may not reflect what is actually
447    * supported (or reported) by the client-side library.
448    */
449   /*@{ */
450   int server_major;        /**< Major version number. */
451   int server_minor;        /**< Minor version number. */
452   /*@} */
453
454   /**
455    * Thread ID we're currently current in. Zero if none.
456    */
457   unsigned long thread_id;
458
459   char gl_extension_bits[__GL_EXT_BYTES];
460};
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#if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
515    /**
516     * Per screen direct rendering interface functions and data.
517     */
518   __DRIscreen *__driScreen;
519   const __DRIcoreExtension *core;
520   const __DRIlegacyExtension *legacy;
521   const __DRIswrastExtension *swrast;
522   const __DRIdri2Extension *dri2;
523   __glxHashTable *drawHash;
524   Display *dpy;
525   int scr, fd;
526   void *driver;
527
528   __GLXDRIscreen *driScreen;
529
530   const __DRIconfig **driver_configs;
531
532#ifdef __DRI_COPY_SUB_BUFFER
533   const __DRIcopySubBufferExtension *driCopySubBuffer;
534#endif
535
536#ifdef __DRI_SWAP_CONTROL
537   const __DRIswapControlExtension *swapControl;
538#endif
539
540#ifdef __DRI_ALLOCATE
541   const __DRIallocateExtension *allocate;
542#endif
543
544#ifdef __DRI_FRAME_TRACKING
545   const __DRIframeTrackingExtension *frameTracking;
546#endif
547
548#ifdef __DRI_MEDIA_STREAM_COUNTER
549   const __DRImediaStreamCounterExtension *msc;
550#endif
551
552#ifdef __DRI_TEX_BUFFER
553   const __DRItexBufferExtension *texBuffer;
554#endif
555
556#ifdef __DRI2_FLUSH
557   const __DRI2flushExtension *f;
558#endif
559
560#ifdef __DRI2_CONFIG_QUERY
561   const __DRI2configQueryExtension *config;
562#endif
563
564#endif
565
566    /**
567     * Linked list of glx visuals and  fbconfigs for this screen.
568     */
569   __GLcontextModes *visuals, *configs;
570
571    /**
572     * Per-screen dynamic GLX extension tracking.  The \c direct_support
573     * field only contains enough bits for 64 extensions.  Should libGL
574     * ever need to track more than 64 GLX extensions, we can safely grow
575     * this field.  The \c __GLXscreenConfigs structure is not used outside
576     * libGL.
577     */
578   /*@{ */
579   unsigned char direct_support[8];
580   GLboolean ext_list_first_time;
581   /*@} */
582
583};
584
585/**
586 * Per display private data.  One of these records exists for each display
587 * that is using the OpenGL (GLX) extension.
588 */
589struct __GLXdisplayPrivateRec
590{
591    /**
592     * Back pointer to the display
593     */
594   Display *dpy;
595
596    /**
597     * The \c majorOpcode is common to all connections to the same server.
598     * It is also copied into the context structure.
599     */
600   int majorOpcode;
601
602    /**
603     * \name Server Version
604     *
605     * Major and minor version returned by the server during initialization.
606     */
607   /*@{ */
608   int majorVersion, minorVersion;
609   /*@} */
610
611    /**
612     * \name Storage for the servers GLX vendor and versions strings.
613     *
614     * These are the same for all screens on this display. These fields will
615     * be filled in on demand.
616     */
617   /*@{ */
618   const char *serverGLXvendor;
619   const char *serverGLXversion;
620   /*@} */
621
622    /**
623     * Configurations of visuals for all screens on this display.
624     * Also, per screen data which now includes the server \c GLX_EXTENSION
625     * string.
626     */
627   __GLXscreenConfigs *screenConfigs;
628
629#if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
630    /**
631     * Per display direct rendering interface functions and data.
632     */
633   __GLXDRIdisplay *driswDisplay;
634   __GLXDRIdisplay *driDisplay;
635   __GLXDRIdisplay *dri2Display;
636#endif
637};
638
639
640extern GLubyte *__glXFlushRenderBuffer(__GLXcontext *, GLubyte *);
641
642extern void __glXSendLargeChunk(__GLXcontext * gc, GLint requestNumber,
643                                GLint totalRequests,
644                                const GLvoid * data, GLint dataLen);
645
646extern void __glXSendLargeCommand(__GLXcontext *, const GLvoid *, GLint,
647                                  const GLvoid *, GLint);
648
649/* Initialize the GLX extension for dpy */
650extern __GLXdisplayPrivate *__glXInitialize(Display *);
651
652extern void __glXPreferEGL(int state);
653
654/************************************************************************/
655
656extern int __glXDebug;
657
658/* This is per-thread storage in an MT environment */
659#if defined( PTHREADS )
660
661extern void __glXSetCurrentContext(__GLXcontext * c);
662
663# if defined( GLX_USE_TLS )
664
665extern __thread void *__glX_tls_Context
666   __attribute__ ((tls_model("initial-exec")));
667
668#  define __glXGetCurrentContext() __glX_tls_Context
669
670# else
671
672extern __GLXcontext *__glXGetCurrentContext(void);
673
674# endif /* defined( GLX_USE_TLS ) */
675
676#else
677
678extern __GLXcontext *__glXcurrentContext;
679#define __glXGetCurrentContext() __glXcurrentContext
680#define __glXSetCurrentContext(gc) __glXcurrentContext = gc
681
682#endif /* defined( PTHREADS ) */
683
684extern void __glXSetCurrentContextNull(void);
685
686extern void __glXFreeContext(__GLXcontext *);
687
688
689/*
690** Global lock for all threads in this address space using the GLX
691** extension
692*/
693#if defined( PTHREADS )
694extern pthread_mutex_t __glXmutex;
695#define __glXLock()    pthread_mutex_lock(&__glXmutex)
696#define __glXUnlock()  pthread_mutex_unlock(&__glXmutex)
697#else
698#define __glXLock()
699#define __glXUnlock()
700#endif
701
702/*
703** Setup for a command.  Initialize the extension for dpy if necessary.
704*/
705extern CARD8 __glXSetupForCommand(Display * dpy);
706
707/************************************************************************/
708
709/*
710** Data conversion and packing support.
711*/
712
713extern const GLuint __glXDefaultPixelStore[9];
714
715/* Send an image to the server using RenderLarge. */
716extern void __glXSendLargeImage(__GLXcontext * gc, GLint compsize, GLint dim,
717                                GLint width, GLint height, GLint depth,
718                                GLenum format, GLenum type,
719                                const GLvoid * src, GLubyte * pc,
720                                GLubyte * modes);
721
722/* Return the size, in bytes, of some pixel data */
723extern GLint __glImageSize(GLint, GLint, GLint, GLenum, GLenum, GLenum);
724
725/* Return the number of elements per group of a specified format*/
726extern GLint __glElementsPerGroup(GLenum format, GLenum type);
727
728/* Return the number of bytes per element, based on the element type (other
729** than GL_BITMAP).
730*/
731extern GLint __glBytesPerElement(GLenum type);
732
733/*
734** Fill the transport buffer with the data from the users buffer,
735** applying some of the pixel store modes (unpack modes) to the data
736** first.  As a side effect of this call, the "modes" field is
737** updated to contain the modes needed by the server to decode the
738** sent data.
739*/
740extern void __glFillImage(__GLXcontext *, GLint, GLint, GLint, GLint, GLenum,
741                          GLenum, const GLvoid *, GLubyte *, GLubyte *);
742
743/* Copy map data with a stride into a packed buffer */
744extern void __glFillMap1f(GLint, GLint, GLint, const GLfloat *, GLubyte *);
745extern void __glFillMap1d(GLint, GLint, GLint, const GLdouble *, GLubyte *);
746extern void __glFillMap2f(GLint, GLint, GLint, GLint, GLint,
747                          const GLfloat *, GLfloat *);
748extern void __glFillMap2d(GLint, GLint, GLint, GLint, GLint,
749                          const GLdouble *, GLdouble *);
750
751/*
752** Empty an image out of the reply buffer into the clients memory applying
753** the pack modes to pack back into the clients requested format.
754*/
755extern void __glEmptyImage(__GLXcontext *, GLint, GLint, GLint, GLint, GLenum,
756                           GLenum, const GLubyte *, GLvoid *);
757
758
759/*
760** Allocate and Initialize Vertex Array client state, and free.
761*/
762extern void __glXInitVertexArrayState(__GLXcontext *);
763extern void __glXFreeVertexArrayState(__GLXcontext *);
764
765/*
766** Inform the Server of the major and minor numbers and of the client
767** libraries extension string.
768*/
769extern void __glXClientInfo(Display * dpy, int opcode);
770
771/************************************************************************/
772
773/*
774** Declarations that should be in Xlib
775*/
776#ifdef __GL_USE_OUR_PROTOTYPES
777extern void _XFlush(Display *);
778extern Status _XReply(Display *, xReply *, int, Bool);
779extern void _XRead(Display *, void *, long);
780extern void _XSend(Display *, const void *, long);
781#endif
782
783
784extern void __glXInitializeVisualConfigFromTags(__GLcontextModes * config,
785                                                int count, const INT32 * bp,
786                                                Bool tagged_only,
787                                                Bool fbconfig_style_tags);
788
789extern char *__glXQueryServerString(Display * dpy, int opcode,
790                                    CARD32 screen, CARD32 name);
791extern char *__glXGetString(Display * dpy, int opcode,
792                            CARD32 screen, CARD32 name);
793
794extern char *__glXstrdup(const char *str);
795
796
797extern const char __glXGLClientVersion[];
798extern const char __glXGLClientExtensions[];
799
800/* Get the unadjusted system time */
801extern int __glXGetUST(int64_t * ust);
802
803extern GLboolean __glXGetMscRateOML(Display * dpy, GLXDrawable drawable,
804                                    int32_t * numerator,
805                                    int32_t * denominator);
806
807#if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
808GLboolean
809__driGetMscRateOML(__DRIdrawable * draw,
810                   int32_t * numerator, int32_t * denominator, void *private);
811
812/* So that dri2.c:DRI2WireToEvent() can access
813 * glx_info->codes->first_event */
814XExtDisplayInfo *__glXFindDisplay (Display *dpy);
815
816extern __GLXDRIdrawable *
817GetGLXDRIDrawable(Display *dpy, GLXDrawable drawable, int *const scrn_num);
818
819#endif
820
821#endif /* !__GLX_client_h__ */
822