glxclient.h revision 65d98e25770487456eb3d7eb8ec3ec8272f170b1 
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/glxproto.h"
53#include "glapi/glapitable.h"
54#include "glxconfig.h"
55#include "glxhash.h"
56#if defined( PTHREADS )
57# include <pthread.h>
58#endif
59
60#include "glxextensions.h"
61
62
63/* If we build the library with gcc's -fvisibility=hidden flag, we'll
64 * use the PUBLIC macro to mark functions that are to be exported.
65 *
66 * We also need to define a USED attribute, so the optimizer doesn't
67 * inline a static function that we later use in an alias. - ajax
68 */
69#if defined(__GNUC__)
70#  define PUBLIC __attribute__((visibility("default")))
71#  define USED __attribute__((used))
72#else
73#  define PUBLIC
74#  define USED
75#endif
76
77#define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0]))
78
79#define GLX_MAJOR_VERSION 1       /* current version numbers */
80#define GLX_MINOR_VERSION 4
81
82#define __GLX_MAX_TEXTURE_UNITS 32
83
84typedef struct __GLXscreenConfigsRec __GLXscreenConfigs;
85typedef struct __GLXcontextRec __GLXcontext;
86typedef struct __GLXdrawableRec __GLXdrawable;
87typedef struct __GLXdisplayPrivateRec __GLXdisplayPrivate;
88typedef struct _glapi_table __GLapi;
89
90/************************************************************************/
91
92#ifdef GLX_DIRECT_RENDERING
93
94#define containerOf(ptr, type, member)              \
95    (type *)( (char *)ptr - offsetof(type,member) )
96
97extern void DRI_glXUseXFont(GLXContext CC,
98			    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				  struct glx_config *config,
131				  GLXContext shareList, int renderType);
132
133   __GLXDRIdrawable *(*createDrawable)(__GLXscreenConfigs *psc,
134				       XID drawable,
135				       GLXDrawable glxDrawable,
136				       struct glx_config *config);
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   int (*getDrawableMSC)(__GLXscreenConfigs *psc, __GLXDRIdrawable *pdraw,
143			 int64_t *ust, int64_t *msc, int64_t *sbc);
144   int (*waitForMSC)(__GLXDRIdrawable *pdraw, int64_t target_msc,
145		     int64_t divisor, int64_t remainder, int64_t *ust,
146		     int64_t *msc, int64_t *sbc);
147   int (*waitForSBC)(__GLXDRIdrawable *pdraw, int64_t target_sbc, int64_t *ust,
148		     int64_t *msc, int64_t *sbc);
149   int (*setSwapInterval)(__GLXDRIdrawable *pdraw, int interval);
150   int (*getSwapInterval)(__GLXDRIdrawable *pdraw);
151};
152
153struct __GLXDRIcontextRec
154{
155   Bool(*bindContext) (__GLXcontext *context, __GLXDRIdrawable *pdraw,
156		       __GLXDRIdrawable *pread);
157   void (*unbindContext) (__GLXcontext *context);
158};
159
160struct __GLXDRIdrawableRec
161{
162   void (*destroyDrawable) (__GLXDRIdrawable * drawable);
163
164   XID xDrawable;
165   XID drawable;
166   __GLXscreenConfigs *psc;
167   GLenum textureTarget;
168   GLenum textureFormat;        /* EXT_texture_from_pixmap support */
169   unsigned long eventMask;
170};
171
172/*
173** Function to create and DRI display data and initialize the display
174** dependent methods.
175*/
176extern __GLXDRIdisplay *driswCreateDisplay(Display * dpy);
177extern __GLXDRIdisplay *driCreateDisplay(Display * dpy);
178extern __GLXDRIdisplay *dri2CreateDisplay(Display * dpy);
179extern void dri2InvalidateBuffers(Display *dpy, XID drawable);
180
181
182/*
183** Functions to obtain driver configuration information from a direct
184** rendering client application
185*/
186extern const char *glXGetScreenDriver(Display * dpy, int scrNum);
187
188extern const char *glXGetDriverConfig(const char *driverName);
189
190#endif
191
192/************************************************************************/
193
194#define __GL_CLIENT_ATTRIB_STACK_DEPTH 16
195
196typedef struct __GLXpixelStoreModeRec
197{
198   GLboolean swapEndian;
199   GLboolean lsbFirst;
200   GLuint rowLength;
201   GLuint imageHeight;
202   GLuint imageDepth;
203   GLuint skipRows;
204   GLuint skipPixels;
205   GLuint skipImages;
206   GLuint alignment;
207} __GLXpixelStoreMode;
208
209
210typedef struct __GLXattributeRec
211{
212   GLuint mask;
213
214    /**
215     * Pixel storage state.  Most of the pixel store mode state is kept
216     * here and used by the client code to manage the packing and
217     * unpacking of data sent to/received from the server.
218     */
219   __GLXpixelStoreMode storePack, storeUnpack;
220
221    /**
222     * Is EXT_vertex_array / GL 1.1 DrawArrays protocol specifically
223     * disabled?
224     */
225   GLboolean NoDrawArraysProtocol;
226
227    /**
228     * Vertex Array storage state.  The vertex array component
229     * state is stored here and is used to manage the packing of
230     * DrawArrays data sent to the server.
231     */
232   struct array_state_vector *array_state;
233} __GLXattribute;
234
235typedef struct __GLXattributeMachineRec
236{
237   __GLXattribute *stack[__GL_CLIENT_ATTRIB_STACK_DEPTH];
238   __GLXattribute **stackPointer;
239} __GLXattributeMachine;
240
241struct glx_context_vtable {
242   void (*destroy)(__GLXcontext *ctx);
243   void (*wait_gl)(__GLXcontext *ctx);
244   void (*wait_x)(__GLXcontext *ctx);
245   void (*use_x_font)(__GLXcontext *ctx,
246		      Font font, int first, int count, int listBase);
247   void (*bind_tex_image)(Display * dpy,
248			  GLXDrawable drawable,
249			  int buffer, const int *attrib_list);
250   void (*release_tex_image)(Display * dpy, GLXDrawable drawable, int buffer);
251
252};
253
254extern void
255glx_send_destroy_context(Display *dpy, XID xid);
256
257/**
258 * GLX state that needs to be kept on the client.  One of these records
259 * exist for each context that has been made current by this client.
260 */
261struct __GLXcontextRec
262{
263    /**
264     * \name Drawing command buffer.
265     *
266     * Drawing commands are packed into this buffer before being sent as a
267     * single GLX protocol request.  The buffer is sent when it overflows or
268     * is flushed by \c __glXFlushRenderBuffer.  \c pc is the next location
269     * in the buffer to be filled.  \c limit is described above in the buffer
270     * slop discussion.
271     *
272     * Commands that require large amounts of data to be transfered will
273     * also use this buffer to hold a header that describes the large
274     * command.
275     *
276     * These must be the first 6 fields since they are static initialized
277     * in the dummy context in glxext.c
278     */
279   /*@{ */
280   GLubyte *buf;
281   GLubyte *pc;
282   GLubyte *limit;
283   GLubyte *bufEnd;
284   GLint bufSize;
285   /*@} */
286
287    /**
288     * The XID of this rendering context.  When the context is created a
289     * new XID is allocated.  This is set to None when the context is
290     * destroyed but is still current to some thread. In this case the
291     * context will be freed on next MakeCurrent.
292     */
293   XID xid;
294
295    /**
296     * The XID of the \c shareList context.
297     */
298   XID share_xid;
299
300    /**
301     * Screen number.
302     */
303   GLint screen;
304   __GLXscreenConfigs *psc;
305
306    /**
307     * \c GL_TRUE if the context was created with ImportContext, which
308     * means the server-side context was created by another X client.
309     */
310   GLboolean imported;
311
312    /**
313     * The context tag returned by MakeCurrent when this context is made
314     * current. This tag is used to identify the context that a thread has
315     * current so that proper server context management can be done.  It is
316     * used for all context specific commands (i.e., \c Render, \c RenderLarge,
317     * \c WaitX, \c WaitGL, \c UseXFont, and \c MakeCurrent (for the old
318     * context)).
319     */
320   GLXContextTag currentContextTag;
321
322    /**
323     * \name Rendering mode
324     *
325     * The rendering mode is kept on the client as well as the server.
326     * When \c glRenderMode is called, the buffer associated with the
327     * previous rendering mode (feedback or select) is filled.
328     */
329   /*@{ */
330   GLenum renderMode;
331   GLfloat *feedbackBuf;
332   GLuint *selectBuf;
333   /*@} */
334
335    /**
336     * This is \c GL_TRUE if the pixel unpack modes are such that an image
337     * can be unpacked from the clients memory by just copying.  It may
338     * still be true that the server will have to do some work.  This
339     * just promises that a straight copy will fetch the correct bytes.
340     */
341   GLboolean fastImageUnpack;
342
343    /**
344     * Fill newImage with the unpacked form of \c oldImage getting it
345     * ready for transport to the server.
346     */
347   void (*fillImage) (__GLXcontext *, GLint, GLint, GLint, GLint, GLenum,
348                      GLenum, const GLvoid *, GLubyte *, GLubyte *);
349
350    /**
351     * Client side attribs.
352     */
353   __GLXattributeMachine attributes;
354
355    /**
356     * Client side error code.  This is set when client side gl API
357     * routines need to set an error because of a bad enumerant or
358     * running out of memory, etc.
359     */
360   GLenum error;
361
362    /**
363     * Whether this context does direct rendering.
364     */
365   Bool isDirect;
366
367    /**
368     * \c dpy of current display for this context.  Will be \c NULL if not
369     * current to any display, or if this is the "dummy context".
370     */
371   Display *currentDpy;
372
373    /**
374     * The current drawable for this context.  Will be None if this
375     * context is not current to any drawable.  currentReadable is below.
376     */
377   GLXDrawable currentDrawable;
378
379    /**
380     * \name GL Constant Strings
381     *
382     * Constant strings that describe the server implementation
383     * These pertain to GL attributes, not to be confused with
384     * GLX versioning attributes.
385     */
386   /*@{ */
387   GLubyte *vendor;
388   GLubyte *renderer;
389   GLubyte *version;
390   GLubyte *extensions;
391   /*@} */
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 config used to create this context.
407     */
408   struct glx_config *config;
409
410#ifdef GLX_DIRECT_RENDERING
411#ifdef GLX_USE_APPLEGL
412   void *driContext;
413   Bool do_destroy;
414#else
415   __GLXDRIcontext *driContext;
416#endif
417#endif
418
419    /**
420     * The current read-drawable for this context.  Will be None if this
421     * context is not current to any drawable.
422     *
423     * \since Internal API version 20030606.
424     */
425   GLXDrawable currentReadable;
426
427   /**
428    * Pointer to client-state data that is private to libGL.  This is only
429    * used for indirect rendering contexts.
430    *
431    * No internal API version change was made for this change.  Client-side
432    * drivers should NEVER use this data or even care that it exists.
433    */
434   void *client_state_private;
435
436   /**
437    * Stored value for \c glXQueryContext attribute \c GLX_RENDER_TYPE.
438    */
439   int renderType;
440
441   /**
442    * \name Raw server GL version
443    *
444    * True core GL version supported by the server.  This is the raw value
445    * returned by the server, and it may not reflect what is actually
446    * supported (or reported) by the client-side library.
447    */
448   /*@{ */
449   int server_major;        /**< Major version number. */
450   int server_minor;        /**< Minor version number. */
451   /*@} */
452
453   /**
454    * Thread ID we're currently current in. Zero if none.
455    */
456   unsigned long thread_id;
457
458   char gl_extension_bits[__GL_EXT_BYTES];
459
460   const struct glx_context_vtable *vtable;
461};
462
463extern Bool
464glx_context_init(__GLXcontext *gc,
465		 __GLXscreenConfigs *psc, struct glx_config *fbconfig);
466
467#define __glXSetError(gc,code)  \
468   if (!(gc)->error) {          \
469      (gc)->error = code;       \
470   }
471
472extern void __glFreeAttributeState(__GLXcontext *);
473
474/************************************************************************/
475
476/**
477 * The size of the largest drawing command known to the implementation
478 * that will use the GLXRender GLX command.  In this case it is
479 * \c glPolygonStipple.
480 */
481#define __GLX_MAX_SMALL_RENDER_CMD_SIZE 156
482
483/**
484 * To keep the implementation fast, the code uses a "limit" pointer
485 * to determine when the drawing command buffer is too full to hold
486 * another fixed size command.  This constant defines the amount of
487 * space that must always be available in the drawing command buffer
488 * at all times for the implementation to work.  It is important that
489 * the number be just large enough, but not so large as to reduce the
490 * efficacy of the buffer.  The "+32" is just to keep the code working
491 * in case somebody counts wrong.
492 */
493#define __GLX_BUFFER_LIMIT_SIZE (__GLX_MAX_SMALL_RENDER_CMD_SIZE + 32)
494
495/**
496 * This implementation uses a smaller threshold for switching
497 * to the RenderLarge protocol than the protcol requires so that
498 * large copies don't occur.
499 */
500#define __GLX_RENDER_CMD_SIZE_LIMIT 4096
501
502/**
503 * One of these records exists per screen of the display.  It contains
504 * a pointer to the config data for that screen (if the screen supports GL).
505 */
506struct glx_screen_vtable {
507   __GLXcontext *(*create_context)(__GLXscreenConfigs *psc,
508				   struct glx_config *config,
509				   GLXContext shareList, int renderType);
510};
511
512struct __GLXscreenConfigsRec
513{
514   const struct glx_screen_vtable *vtable;
515
516    /**
517     * GLX extension string reported by the X-server.
518     */
519   const char *serverGLXexts;
520
521    /**
522     * GLX extension string to be reported to applications.  This is the
523     * set of extensions that the application can actually use.
524     */
525   char *effectiveGLXexts;
526
527   __GLXdisplayPrivate *display;
528
529#if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
530    /**
531     * Per screen direct rendering interface functions and data.
532     */
533   Display *dpy;
534   int scr;
535
536   __GLXDRIscreen *driScreen;
537#endif
538
539    /**
540     * Linked list of glx visuals and  fbconfigs for this screen.
541     */
542   struct glx_config *visuals, *configs;
543
544    /**
545     * Per-screen dynamic GLX extension tracking.  The \c direct_support
546     * field only contains enough bits for 64 extensions.  Should libGL
547     * ever need to track more than 64 GLX extensions, we can safely grow
548     * this field.  The \c __GLXscreenConfigs structure is not used outside
549     * libGL.
550     */
551   /*@{ */
552   unsigned char direct_support[8];
553   GLboolean ext_list_first_time;
554   /*@} */
555
556};
557
558/**
559 * Per display private data.  One of these records exists for each display
560 * that is using the OpenGL (GLX) extension.
561 */
562struct __GLXdisplayPrivateRec
563{
564   /* The extension protocol codes */
565   XExtCodes *codes;
566   struct __GLXdisplayPrivateRec *next;
567
568    /**
569     * Back pointer to the display
570     */
571   Display *dpy;
572
573    /**
574     * The \c majorOpcode is common to all connections to the same server.
575     * It is also copied into the context structure.
576     */
577   int majorOpcode;
578
579    /**
580     * \name Server Version
581     *
582     * Major and minor version returned by the server during initialization.
583     */
584   /*@{ */
585   int majorVersion, minorVersion;
586   /*@} */
587
588    /**
589     * \name Storage for the servers GLX vendor and versions strings.
590     *
591     * These are the same for all screens on this display. These fields will
592     * be filled in on demand.
593     */
594   /*@{ */
595   const char *serverGLXvendor;
596   const char *serverGLXversion;
597   /*@} */
598
599    /**
600     * Configurations of visuals for all screens on this display.
601     * Also, per screen data which now includes the server \c GLX_EXTENSION
602     * string.
603     */
604   __GLXscreenConfigs **screenConfigs;
605
606#if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
607   __glxHashTable *drawHash;
608
609    /**
610     * Per display direct rendering interface functions and data.
611     */
612   __GLXDRIdisplay *driswDisplay;
613   __GLXDRIdisplay *driDisplay;
614   __GLXDRIdisplay *dri2Display;
615#endif
616};
617
618extern int
619glx_screen_init(__GLXscreenConfigs *psc,
620		int screen, __GLXdisplayPrivate * priv);
621
622#if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
623extern __GLXDRIdrawable *
624dri2GetGlxDrawableFromXDrawableId(Display *dpy, XID id);
625#endif
626
627extern GLubyte *__glXFlushRenderBuffer(__GLXcontext *, GLubyte *);
628
629extern void __glXSendLargeChunk(__GLXcontext * gc, GLint requestNumber,
630                                GLint totalRequests,
631                                const GLvoid * data, GLint dataLen);
632
633extern void __glXSendLargeCommand(__GLXcontext *, const GLvoid *, GLint,
634                                  const GLvoid *, GLint);
635
636/* Initialize the GLX extension for dpy */
637extern __GLXdisplayPrivate *__glXInitialize(Display *);
638
639extern void __glXPreferEGL(int state);
640
641/************************************************************************/
642
643extern int __glXDebug;
644
645/* This is per-thread storage in an MT environment */
646#if defined( PTHREADS )
647
648extern void __glXSetCurrentContext(__GLXcontext * c);
649
650# if defined( GLX_USE_TLS )
651
652extern __thread void *__glX_tls_Context
653   __attribute__ ((tls_model("initial-exec")));
654
655#  define __glXGetCurrentContext() __glX_tls_Context
656
657# else
658
659extern __GLXcontext *__glXGetCurrentContext(void);
660
661# endif /* defined( GLX_USE_TLS ) */
662
663#else
664
665extern __GLXcontext *__glXcurrentContext;
666#define __glXGetCurrentContext() __glXcurrentContext
667#define __glXSetCurrentContext(gc) __glXcurrentContext = gc
668
669#endif /* defined( PTHREADS ) */
670
671extern void __glXSetCurrentContextNull(void);
672
673
674/*
675** Global lock for all threads in this address space using the GLX
676** extension
677*/
678#if defined( PTHREADS )
679extern pthread_mutex_t __glXmutex;
680#define __glXLock()    pthread_mutex_lock(&__glXmutex)
681#define __glXUnlock()  pthread_mutex_unlock(&__glXmutex)
682#else
683#define __glXLock()
684#define __glXUnlock()
685#endif
686
687/*
688** Setup for a command.  Initialize the extension for dpy if necessary.
689*/
690extern CARD8 __glXSetupForCommand(Display * dpy);
691
692/************************************************************************/
693
694/*
695** Data conversion and packing support.
696*/
697
698extern const GLuint __glXDefaultPixelStore[9];
699
700/* Send an image to the server using RenderLarge. */
701extern void __glXSendLargeImage(__GLXcontext * gc, GLint compsize, GLint dim,
702                                GLint width, GLint height, GLint depth,
703                                GLenum format, GLenum type,
704                                const GLvoid * src, GLubyte * pc,
705                                GLubyte * modes);
706
707/* Return the size, in bytes, of some pixel data */
708extern GLint __glImageSize(GLint, GLint, GLint, GLenum, GLenum, GLenum);
709
710/* Return the number of elements per group of a specified format*/
711extern GLint __glElementsPerGroup(GLenum format, GLenum type);
712
713/* Return the number of bytes per element, based on the element type (other
714** than GL_BITMAP).
715*/
716extern GLint __glBytesPerElement(GLenum type);
717
718/*
719** Fill the transport buffer with the data from the users buffer,
720** applying some of the pixel store modes (unpack modes) to the data
721** first.  As a side effect of this call, the "modes" field is
722** updated to contain the modes needed by the server to decode the
723** sent data.
724*/
725extern void __glFillImage(__GLXcontext *, GLint, GLint, GLint, GLint, GLenum,
726                          GLenum, const GLvoid *, GLubyte *, GLubyte *);
727
728/* Copy map data with a stride into a packed buffer */
729extern void __glFillMap1f(GLint, GLint, GLint, const GLfloat *, GLubyte *);
730extern void __glFillMap1d(GLint, GLint, GLint, const GLdouble *, GLubyte *);
731extern void __glFillMap2f(GLint, GLint, GLint, GLint, GLint,
732                          const GLfloat *, GLfloat *);
733extern void __glFillMap2d(GLint, GLint, GLint, GLint, GLint,
734                          const GLdouble *, GLdouble *);
735
736/*
737** Empty an image out of the reply buffer into the clients memory applying
738** the pack modes to pack back into the clients requested format.
739*/
740extern void __glEmptyImage(__GLXcontext *, GLint, GLint, GLint, GLint, GLenum,
741                           GLenum, const GLubyte *, GLvoid *);
742
743
744/*
745** Allocate and Initialize Vertex Array client state, and free.
746*/
747extern void __glXInitVertexArrayState(__GLXcontext *);
748extern void __glXFreeVertexArrayState(__GLXcontext *);
749
750/*
751** Inform the Server of the major and minor numbers and of the client
752** libraries extension string.
753*/
754extern void __glXClientInfo(Display * dpy, int opcode);
755
756/************************************************************************/
757
758/*
759** Declarations that should be in Xlib
760*/
761#ifdef __GL_USE_OUR_PROTOTYPES
762extern void _XFlush(Display *);
763extern Status _XReply(Display *, xReply *, int, Bool);
764extern void _XRead(Display *, void *, long);
765extern void _XSend(Display *, const void *, long);
766#endif
767
768
769extern void __glXInitializeVisualConfigFromTags(struct glx_config * config,
770                                                int count, const INT32 * bp,
771                                                Bool tagged_only,
772                                                Bool fbconfig_style_tags);
773
774extern char *__glXQueryServerString(Display * dpy, int opcode,
775                                    CARD32 screen, CARD32 name);
776extern char *__glXGetString(Display * dpy, int opcode,
777                            CARD32 screen, CARD32 name);
778
779extern char *__glXstrdup(const char *str);
780
781
782extern const char __glXGLClientVersion[];
783extern const char __glXGLClientExtensions[];
784
785/* Get the unadjusted system time */
786extern int __glXGetUST(int64_t * ust);
787
788extern GLboolean __glXGetMscRateOML(Display * dpy, GLXDrawable drawable,
789                                    int32_t * numerator,
790                                    int32_t * denominator);
791
792#if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
793extern GLboolean
794__glxGetMscRate(__GLXDRIdrawable *glxDraw,
795		int32_t * numerator, int32_t * denominator);
796
797/* So that dri2.c:DRI2WireToEvent() can access
798 * glx_info->codes->first_event */
799XExtDisplayInfo *__glXFindDisplay (Display *dpy);
800
801extern void
802GarbageCollectDRIDrawables(__GLXscreenConfigs *psc);
803
804extern __GLXDRIdrawable *
805GetGLXDRIDrawable(Display *dpy, GLXDrawable drawable);
806
807#endif
808
809extern __GLXscreenConfigs *
810indirect_create_screen(int screen, __GLXdisplayPrivate * priv);
811
812#endif /* !__GLX_client_h__ */
813