glxclient.h revision d2fe97a209134ff5267e8aa065865c3398bfb280 
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#include <GL/internal/dri_interface.h>
105
106/**
107 * Display dependent methods.  This structure is initialized during the
108 * \c driCreateDisplay call.
109 */
110typedef struct __GLXDRIdisplayRec __GLXDRIdisplay;
111typedef struct __GLXDRIscreenRec __GLXDRIscreen;
112typedef struct __GLXDRIdrawableRec __GLXDRIdrawable;
113typedef struct __GLXDRIcontextRec __GLXDRIcontext;
114
115#include "glxextensions.h"
116
117struct __GLXDRIdisplayRec
118{
119    /**
120     * Method to destroy the private DRI display data.
121     */
122   void (*destroyDisplay) (__GLXDRIdisplay * display);
123
124   __GLXDRIscreen *(*createScreen) (__GLXscreenConfigs * psc, int screen,
125                                    __GLXdisplayPrivate * priv);
126};
127
128struct __GLXDRIscreenRec {
129
130   void (*destroyScreen)(__GLXscreenConfigs *psc);
131
132   __GLXDRIcontext *(*createContext)(__GLXscreenConfigs *psc,
133				     const __GLcontextModes *mode,
134				     GLXContext gc,
135				     GLXContext shareList, int renderType);
136
137   __GLXDRIdrawable *(*createDrawable)(__GLXscreenConfigs *psc,
138				       XID drawable,
139				       GLXDrawable glxDrawable,
140				       const __GLcontextModes *modes);
141
142   int64_t (*swapBuffers)(__GLXDRIdrawable *pdraw, int64_t target_msc,
143			  int64_t divisor, int64_t remainder);
144   void (*copySubBuffer)(__GLXDRIdrawable *pdraw,
145			 int x, int y, int width, int height);
146   void (*waitX)(__GLXDRIdrawable *pdraw);
147   void (*waitGL)(__GLXDRIdrawable *pdraw);
148   int (*getDrawableMSC)(__GLXscreenConfigs *psc, __GLXDRIdrawable *pdraw,
149			 int64_t *ust, int64_t *msc, int64_t *sbc);
150   int (*waitForMSC)(__GLXDRIdrawable *pdraw, int64_t target_msc,
151		     int64_t divisor, int64_t remainder, int64_t *ust,
152		     int64_t *msc, int64_t *sbc);
153   int (*waitForSBC)(__GLXDRIdrawable *pdraw, int64_t target_sbc, int64_t *ust,
154		     int64_t *msc, int64_t *sbc);
155   void (*setSwapInterval)(__GLXDRIdrawable *pdraw, int interval);
156   int (*getSwapInterval)(__GLXDRIdrawable *pdraw);
157};
158
159struct __GLXDRIcontextRec
160{
161   void (*destroyContext) (__GLXDRIcontext * context,
162                           __GLXscreenConfigs * psc, Display * dpy);
163     Bool(*bindContext) (__GLXDRIcontext * context, __GLXDRIdrawable * pdraw,
164                         __GLXDRIdrawable * pread);
165
166   void (*unbindContext) (__GLXDRIcontext * context);
167};
168
169struct __GLXDRIdrawableRec
170{
171   void (*destroyDrawable) (__GLXDRIdrawable * drawable);
172
173   XID xDrawable;
174   XID drawable;
175   __GLXscreenConfigs *psc;
176   GLenum textureTarget;
177   __DRIdrawable *driDrawable;
178   GLenum textureFormat;        /* EXT_texture_from_pixmap support */
179};
180
181/*
182** Function to create and DRI display data and initialize the display
183** dependent methods.
184*/
185extern __GLXDRIdisplay *driswCreateDisplay(Display * dpy);
186extern __GLXDRIdisplay *driCreateDisplay(Display * dpy);
187extern __GLXDRIdisplay *dri2CreateDisplay(Display * dpy);
188extern void dri2InvalidateBuffers(Display *dpy, XID drawable);
189
190
191/*
192** Functions to obtain driver configuration information from a direct
193** rendering client application
194*/
195extern const char *glXGetScreenDriver(Display * dpy, int scrNum);
196
197extern const char *glXGetDriverConfig(const char *driverName);
198
199#endif
200
201/************************************************************************/
202
203#define __GL_CLIENT_ATTRIB_STACK_DEPTH 16
204
205typedef struct __GLXpixelStoreModeRec
206{
207   GLboolean swapEndian;
208   GLboolean lsbFirst;
209   GLuint rowLength;
210   GLuint imageHeight;
211   GLuint imageDepth;
212   GLuint skipRows;
213   GLuint skipPixels;
214   GLuint skipImages;
215   GLuint alignment;
216} __GLXpixelStoreMode;
217
218
219typedef struct __GLXattributeRec
220{
221   GLuint mask;
222
223    /**
224     * Pixel storage state.  Most of the pixel store mode state is kept
225     * here and used by the client code to manage the packing and
226     * unpacking of data sent to/received from the server.
227     */
228   __GLXpixelStoreMode storePack, storeUnpack;
229
230    /**
231     * Is EXT_vertex_array / GL 1.1 DrawArrays protocol specifically
232     * disabled?
233     */
234   GLboolean NoDrawArraysProtocol;
235
236    /**
237     * Vertex Array storage state.  The vertex array component
238     * state is stored here and is used to manage the packing of
239     * DrawArrays data sent to the server.
240     */
241   struct array_state_vector *array_state;
242} __GLXattribute;
243
244typedef struct __GLXattributeMachineRec
245{
246   __GLXattribute *stack[__GL_CLIENT_ATTRIB_STACK_DEPTH];
247   __GLXattribute **stackPointer;
248} __GLXattributeMachine;
249
250struct glx_context_vtable {
251   void (*bind_tex_image)(Display * dpy,
252			  GLXDrawable drawable,
253			  int buffer, const int *attrib_list);
254   void (*release_tex_image)(Display * dpy, GLXDrawable drawable, int buffer);
255
256};
257
258/**
259 * GLX state that needs to be kept on the client.  One of these records
260 * exist for each context that has been made current by this client.
261 */
262struct __GLXcontextRec
263{
264    /**
265     * \name Drawing command buffer.
266     *
267     * Drawing commands are packed into this buffer before being sent as a
268     * single GLX protocol request.  The buffer is sent when it overflows or
269     * is flushed by \c __glXFlushRenderBuffer.  \c pc is the next location
270     * in the buffer to be filled.  \c limit is described above in the buffer
271     * slop discussion.
272     *
273     * Commands that require large amounts of data to be transfered will
274     * also use this buffer to hold a header that describes the large
275     * command.
276     *
277     * These must be the first 6 fields since they are static initialized
278     * in the dummy context in glxext.c
279     */
280   /*@{ */
281   GLubyte *buf;
282   GLubyte *pc;
283   GLubyte *limit;
284   GLubyte *bufEnd;
285   GLint bufSize;
286   /*@} */
287
288    /**
289     * The XID of this rendering context.  When the context is created a
290     * new XID is allocated.  This is set to None when the context is
291     * destroyed but is still current to some thread. In this case the
292     * context will be freed on next MakeCurrent.
293     */
294   XID xid;
295
296    /**
297     * The XID of the \c shareList context.
298     */
299   XID share_xid;
300
301    /**
302     * Screen number.
303     */
304   GLint screen;
305   __GLXscreenConfigs *psc;
306
307    /**
308     * \c GL_TRUE if the context was created with ImportContext, which
309     * means the server-side context was created by another X client.
310     */
311   GLboolean imported;
312
313    /**
314     * The context tag returned by MakeCurrent when this context is made
315     * current. This tag is used to identify the context that a thread has
316     * current so that proper server context management can be done.  It is
317     * used for all context specific commands (i.e., \c Render, \c RenderLarge,
318     * \c WaitX, \c WaitGL, \c UseXFont, and \c MakeCurrent (for the old
319     * context)).
320     */
321   GLXContextTag currentContextTag;
322
323    /**
324     * \name Rendering mode
325     *
326     * The rendering mode is kept on the client as well as the server.
327     * When \c glRenderMode is called, the buffer associated with the
328     * previous rendering mode (feedback or select) is filled.
329     */
330   /*@{ */
331   GLenum renderMode;
332   GLfloat *feedbackBuf;
333   GLuint *selectBuf;
334   /*@} */
335
336    /**
337     * This is \c GL_TRUE if the pixel unpack modes are such that an image
338     * can be unpacked from the clients memory by just copying.  It may
339     * still be true that the server will have to do some work.  This
340     * just promises that a straight copy will fetch the correct bytes.
341     */
342   GLboolean fastImageUnpack;
343
344    /**
345     * Fill newImage with the unpacked form of \c oldImage getting it
346     * ready for transport to the server.
347     */
348   void (*fillImage) (__GLXcontext *, GLint, GLint, GLint, GLint, GLenum,
349                      GLenum, const GLvoid *, GLubyte *, GLubyte *);
350
351    /**
352     * Client side attribs.
353     */
354   __GLXattributeMachine attributes;
355
356    /**
357     * Client side error code.  This is set when client side gl API
358     * routines need to set an error because of a bad enumerant or
359     * running out of memory, etc.
360     */
361   GLenum error;
362
363    /**
364     * Whether this context does direct rendering.
365     */
366   Bool isDirect;
367
368    /**
369     * \c dpy of current display for this context.  Will be \c NULL if not
370     * current to any display, or if this is the "dummy context".
371     */
372   Display *currentDpy;
373
374    /**
375     * The current drawable for this context.  Will be None if this
376     * context is not current to any drawable.  currentReadable is below.
377     */
378   GLXDrawable currentDrawable;
379
380    /**
381     * \name GL Constant Strings
382     *
383     * Constant strings that describe the server implementation
384     * These pertain to GL attributes, not to be confused with
385     * GLX versioning attributes.
386     */
387   /*@{ */
388   GLubyte *vendor;
389   GLubyte *renderer;
390   GLubyte *version;
391   GLubyte *extensions;
392   /*@} */
393
394    /**
395     * Record the dpy this context was created on for later freeing
396     */
397   Display *createDpy;
398
399    /**
400     * Maximum small render command size.  This is the smaller of 64k and
401     * the size of the above buffer.
402     */
403   GLint maxSmallRenderCommandSize;
404
405    /**
406     * Major opcode for the extension.  Copied here so a lookup isn't
407     * needed.
408     */
409   GLint majorOpcode;
410
411    /**
412     * Pointer to the mode used to create this context.
413     */
414   const __GLcontextModes *mode;
415
416#ifdef GLX_DIRECT_RENDERING
417#ifdef GLX_USE_APPLEGL
418   void *driContext;
419   Bool do_destroy;
420#else
421   __GLXDRIcontext *driContext;
422   __DRIcontext *__driContext;
423#endif
424#endif
425
426    /**
427     * The current read-drawable for this context.  Will be None if this
428     * context is not current to any drawable.
429     *
430     * \since Internal API version 20030606.
431     */
432   GLXDrawable currentReadable;
433
434   /**
435    * Pointer to client-state data that is private to libGL.  This is only
436    * used for indirect rendering contexts.
437    *
438    * No internal API version change was made for this change.  Client-side
439    * drivers should NEVER use this data or even care that it exists.
440    */
441   void *client_state_private;
442
443   /**
444    * Stored value for \c glXQueryContext attribute \c GLX_RENDER_TYPE.
445    */
446   int renderType;
447
448   /**
449    * \name Raw server GL version
450    *
451    * True core GL version supported by the server.  This is the raw value
452    * returned by the server, and it may not reflect what is actually
453    * supported (or reported) by the client-side library.
454    */
455   /*@{ */
456   int server_major;        /**< Major version number. */
457   int server_minor;        /**< Minor version number. */
458   /*@} */
459
460   /**
461    * Thread ID we're currently current in. Zero if none.
462    */
463   unsigned long thread_id;
464
465   char gl_extension_bits[__GL_EXT_BYTES];
466
467   const struct glx_context_vtable *vtable;
468};
469
470#define __glXSetError(gc,code)  \
471   if (!(gc)->error) {          \
472      (gc)->error = code;       \
473   }
474
475extern void __glFreeAttributeState(__GLXcontext *);
476
477/************************************************************************/
478
479/**
480 * The size of the largest drawing command known to the implementation
481 * that will use the GLXRender GLX command.  In this case it is
482 * \c glPolygonStipple.
483 */
484#define __GLX_MAX_SMALL_RENDER_CMD_SIZE 156
485
486/**
487 * To keep the implementation fast, the code uses a "limit" pointer
488 * to determine when the drawing command buffer is too full to hold
489 * another fixed size command.  This constant defines the amount of
490 * space that must always be available in the drawing command buffer
491 * at all times for the implementation to work.  It is important that
492 * the number be just large enough, but not so large as to reduce the
493 * efficacy of the buffer.  The "+32" is just to keep the code working
494 * in case somebody counts wrong.
495 */
496#define __GLX_BUFFER_LIMIT_SIZE (__GLX_MAX_SMALL_RENDER_CMD_SIZE + 32)
497
498/**
499 * This implementation uses a smaller threshold for switching
500 * to the RenderLarge protocol than the protcol requires so that
501 * large copies don't occur.
502 */
503#define __GLX_RENDER_CMD_SIZE_LIMIT 4096
504
505/**
506 * One of these records exists per screen of the display.  It contains
507 * a pointer to the config data for that screen (if the screen supports GL).
508 */
509struct __GLXscreenConfigsRec
510{
511    /**
512     * GLX extension string reported by the X-server.
513     */
514   const char *serverGLXexts;
515
516    /**
517     * GLX extension string to be reported to applications.  This is the
518     * set of extensions that the application can actually use.
519     */
520   char *effectiveGLXexts;
521
522   /**
523    * Context vtable to use for direct contexts on this screen
524    */
525   const struct glx_context_vtable *direct_context_vtable;
526
527#if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
528    /**
529     * Per screen direct rendering interface functions and data.
530     */
531   __DRIscreen *__driScreen;
532   const __DRIcoreExtension *core;
533   const __DRIlegacyExtension *legacy;
534   const __DRIswrastExtension *swrast;
535   const __DRIdri2Extension *dri2;
536   __glxHashTable *drawHash;
537   Display *dpy;
538   int scr, fd;
539   void *driver;
540
541   __GLXDRIscreen *driScreen;
542
543   const __DRIconfig **driver_configs;
544
545#ifdef __DRI_COPY_SUB_BUFFER
546   const __DRIcopySubBufferExtension *driCopySubBuffer;
547#endif
548
549#ifdef __DRI_SWAP_CONTROL
550   const __DRIswapControlExtension *swapControl;
551#endif
552
553#ifdef __DRI_ALLOCATE
554   const __DRIallocateExtension *allocate;
555#endif
556
557#ifdef __DRI_FRAME_TRACKING
558   const __DRIframeTrackingExtension *frameTracking;
559#endif
560
561#ifdef __DRI_MEDIA_STREAM_COUNTER
562   const __DRImediaStreamCounterExtension *msc;
563#endif
564
565#ifdef __DRI_TEX_BUFFER
566   const __DRItexBufferExtension *texBuffer;
567#endif
568
569#ifdef __DRI2_FLUSH
570   const __DRI2flushExtension *f;
571#endif
572
573#ifdef __DRI2_CONFIG_QUERY
574   const __DRI2configQueryExtension *config;
575#endif
576
577#endif
578
579    /**
580     * Linked list of glx visuals and  fbconfigs for this screen.
581     */
582   __GLcontextModes *visuals, *configs;
583
584    /**
585     * Per-screen dynamic GLX extension tracking.  The \c direct_support
586     * field only contains enough bits for 64 extensions.  Should libGL
587     * ever need to track more than 64 GLX extensions, we can safely grow
588     * this field.  The \c __GLXscreenConfigs structure is not used outside
589     * libGL.
590     */
591   /*@{ */
592   unsigned char direct_support[8];
593   GLboolean ext_list_first_time;
594   /*@} */
595
596};
597
598/**
599 * Per display private data.  One of these records exists for each display
600 * that is using the OpenGL (GLX) extension.
601 */
602struct __GLXdisplayPrivateRec
603{
604    /**
605     * Back pointer to the display
606     */
607   Display *dpy;
608
609    /**
610     * The \c majorOpcode is common to all connections to the same server.
611     * It is also copied into the context structure.
612     */
613   int majorOpcode;
614
615    /**
616     * \name Server Version
617     *
618     * Major and minor version returned by the server during initialization.
619     */
620   /*@{ */
621   int majorVersion, minorVersion;
622   /*@} */
623
624    /**
625     * \name Storage for the servers GLX vendor and versions strings.
626     *
627     * These are the same for all screens on this display. These fields will
628     * be filled in on demand.
629     */
630   /*@{ */
631   const char *serverGLXvendor;
632   const char *serverGLXversion;
633   /*@} */
634
635    /**
636     * Configurations of visuals for all screens on this display.
637     * Also, per screen data which now includes the server \c GLX_EXTENSION
638     * string.
639     */
640   __GLXscreenConfigs *screenConfigs;
641
642#if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
643    /**
644     * Per display direct rendering interface functions and data.
645     */
646   __GLXDRIdisplay *driswDisplay;
647   __GLXDRIdisplay *driDisplay;
648   __GLXDRIdisplay *dri2Display;
649#endif
650};
651
652
653extern GLubyte *__glXFlushRenderBuffer(__GLXcontext *, GLubyte *);
654
655extern void __glXSendLargeChunk(__GLXcontext * gc, GLint requestNumber,
656                                GLint totalRequests,
657                                const GLvoid * data, GLint dataLen);
658
659extern void __glXSendLargeCommand(__GLXcontext *, const GLvoid *, GLint,
660                                  const GLvoid *, GLint);
661
662/* Initialize the GLX extension for dpy */
663extern __GLXdisplayPrivate *__glXInitialize(Display *);
664
665extern void __glXPreferEGL(int state);
666
667/************************************************************************/
668
669extern int __glXDebug;
670
671/* This is per-thread storage in an MT environment */
672#if defined( PTHREADS )
673
674extern void __glXSetCurrentContext(__GLXcontext * c);
675
676# if defined( GLX_USE_TLS )
677
678extern __thread void *__glX_tls_Context
679   __attribute__ ((tls_model("initial-exec")));
680
681#  define __glXGetCurrentContext() __glX_tls_Context
682
683# else
684
685extern __GLXcontext *__glXGetCurrentContext(void);
686
687# endif /* defined( GLX_USE_TLS ) */
688
689#else
690
691extern __GLXcontext *__glXcurrentContext;
692#define __glXGetCurrentContext() __glXcurrentContext
693#define __glXSetCurrentContext(gc) __glXcurrentContext = gc
694
695#endif /* defined( PTHREADS ) */
696
697extern void __glXSetCurrentContextNull(void);
698
699extern void __glXFreeContext(__GLXcontext *);
700
701
702/*
703** Global lock for all threads in this address space using the GLX
704** extension
705*/
706#if defined( PTHREADS )
707extern pthread_mutex_t __glXmutex;
708#define __glXLock()    pthread_mutex_lock(&__glXmutex)
709#define __glXUnlock()  pthread_mutex_unlock(&__glXmutex)
710#else
711#define __glXLock()
712#define __glXUnlock()
713#endif
714
715/*
716** Setup for a command.  Initialize the extension for dpy if necessary.
717*/
718extern CARD8 __glXSetupForCommand(Display * dpy);
719
720/************************************************************************/
721
722/*
723** Data conversion and packing support.
724*/
725
726extern const GLuint __glXDefaultPixelStore[9];
727
728/* Send an image to the server using RenderLarge. */
729extern void __glXSendLargeImage(__GLXcontext * gc, GLint compsize, GLint dim,
730                                GLint width, GLint height, GLint depth,
731                                GLenum format, GLenum type,
732                                const GLvoid * src, GLubyte * pc,
733                                GLubyte * modes);
734
735/* Return the size, in bytes, of some pixel data */
736extern GLint __glImageSize(GLint, GLint, GLint, GLenum, GLenum, GLenum);
737
738/* Return the number of elements per group of a specified format*/
739extern GLint __glElementsPerGroup(GLenum format, GLenum type);
740
741/* Return the number of bytes per element, based on the element type (other
742** than GL_BITMAP).
743*/
744extern GLint __glBytesPerElement(GLenum type);
745
746/*
747** Fill the transport buffer with the data from the users buffer,
748** applying some of the pixel store modes (unpack modes) to the data
749** first.  As a side effect of this call, the "modes" field is
750** updated to contain the modes needed by the server to decode the
751** sent data.
752*/
753extern void __glFillImage(__GLXcontext *, GLint, GLint, GLint, GLint, GLenum,
754                          GLenum, const GLvoid *, GLubyte *, GLubyte *);
755
756/* Copy map data with a stride into a packed buffer */
757extern void __glFillMap1f(GLint, GLint, GLint, const GLfloat *, GLubyte *);
758extern void __glFillMap1d(GLint, GLint, GLint, const GLdouble *, GLubyte *);
759extern void __glFillMap2f(GLint, GLint, GLint, GLint, GLint,
760                          const GLfloat *, GLfloat *);
761extern void __glFillMap2d(GLint, GLint, GLint, GLint, GLint,
762                          const GLdouble *, GLdouble *);
763
764/*
765** Empty an image out of the reply buffer into the clients memory applying
766** the pack modes to pack back into the clients requested format.
767*/
768extern void __glEmptyImage(__GLXcontext *, GLint, GLint, GLint, GLint, GLenum,
769                           GLenum, const GLubyte *, GLvoid *);
770
771
772/*
773** Allocate and Initialize Vertex Array client state, and free.
774*/
775extern void __glXInitVertexArrayState(__GLXcontext *);
776extern void __glXFreeVertexArrayState(__GLXcontext *);
777
778/*
779** Inform the Server of the major and minor numbers and of the client
780** libraries extension string.
781*/
782extern void __glXClientInfo(Display * dpy, int opcode);
783
784/************************************************************************/
785
786/*
787** Declarations that should be in Xlib
788*/
789#ifdef __GL_USE_OUR_PROTOTYPES
790extern void _XFlush(Display *);
791extern Status _XReply(Display *, xReply *, int, Bool);
792extern void _XRead(Display *, void *, long);
793extern void _XSend(Display *, const void *, long);
794#endif
795
796
797extern void __glXInitializeVisualConfigFromTags(__GLcontextModes * config,
798                                                int count, const INT32 * bp,
799                                                Bool tagged_only,
800                                                Bool fbconfig_style_tags);
801
802extern char *__glXQueryServerString(Display * dpy, int opcode,
803                                    CARD32 screen, CARD32 name);
804extern char *__glXGetString(Display * dpy, int opcode,
805                            CARD32 screen, CARD32 name);
806
807extern char *__glXstrdup(const char *str);
808
809
810extern const char __glXGLClientVersion[];
811extern const char __glXGLClientExtensions[];
812
813/* Get the unadjusted system time */
814extern int __glXGetUST(int64_t * ust);
815
816extern GLboolean __glXGetMscRateOML(Display * dpy, GLXDrawable drawable,
817                                    int32_t * numerator,
818                                    int32_t * denominator);
819
820#if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
821GLboolean
822__driGetMscRateOML(__DRIdrawable * draw,
823                   int32_t * numerator, int32_t * denominator, void *private);
824
825/* So that dri2.c:DRI2WireToEvent() can access
826 * glx_info->codes->first_event */
827XExtDisplayInfo *__glXFindDisplay (Display *dpy);
828
829extern __GLXDRIdrawable *
830GetGLXDRIDrawable(Display *dpy, GLXDrawable drawable, int *const scrn_num);
831
832#endif
833
834#endif /* !__GLX_client_h__ */
835