glxclient.h revision 3750ebd540510324ef5ada769537ae05309adadb 
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   unsigned long eventMask;
180};
181
182/*
183** Function to create and DRI display data and initialize the display
184** dependent methods.
185*/
186extern __GLXDRIdisplay *driswCreateDisplay(Display * dpy);
187extern __GLXDRIdisplay *driCreateDisplay(Display * dpy);
188extern __GLXDRIdisplay *dri2CreateDisplay(Display * dpy);
189extern void dri2InvalidateBuffers(Display *dpy, XID drawable);
190
191
192/*
193** Functions to obtain driver configuration information from a direct
194** rendering client application
195*/
196extern const char *glXGetScreenDriver(Display * dpy, int scrNum);
197
198extern const char *glXGetDriverConfig(const char *driverName);
199
200#endif
201
202/************************************************************************/
203
204#define __GL_CLIENT_ATTRIB_STACK_DEPTH 16
205
206typedef struct __GLXpixelStoreModeRec
207{
208   GLboolean swapEndian;
209   GLboolean lsbFirst;
210   GLuint rowLength;
211   GLuint imageHeight;
212   GLuint imageDepth;
213   GLuint skipRows;
214   GLuint skipPixels;
215   GLuint skipImages;
216   GLuint alignment;
217} __GLXpixelStoreMode;
218
219
220typedef struct __GLXattributeRec
221{
222   GLuint mask;
223
224    /**
225     * Pixel storage state.  Most of the pixel store mode state is kept
226     * here and used by the client code to manage the packing and
227     * unpacking of data sent to/received from the server.
228     */
229   __GLXpixelStoreMode storePack, storeUnpack;
230
231    /**
232     * Is EXT_vertex_array / GL 1.1 DrawArrays protocol specifically
233     * disabled?
234     */
235   GLboolean NoDrawArraysProtocol;
236
237    /**
238     * Vertex Array storage state.  The vertex array component
239     * state is stored here and is used to manage the packing of
240     * DrawArrays data sent to the server.
241     */
242   struct array_state_vector *array_state;
243} __GLXattribute;
244
245typedef struct __GLXattributeMachineRec
246{
247   __GLXattribute *stack[__GL_CLIENT_ATTRIB_STACK_DEPTH];
248   __GLXattribute **stackPointer;
249} __GLXattributeMachine;
250
251struct glx_context_vtable {
252   void (*bind_tex_image)(Display * dpy,
253			  GLXDrawable drawable,
254			  int buffer, const int *attrib_list);
255   void (*release_tex_image)(Display * dpy, GLXDrawable drawable, int buffer);
256
257};
258
259/**
260 * GLX state that needs to be kept on the client.  One of these records
261 * exist for each context that has been made current by this client.
262 */
263struct __GLXcontextRec
264{
265    /**
266     * \name Drawing command buffer.
267     *
268     * Drawing commands are packed into this buffer before being sent as a
269     * single GLX protocol request.  The buffer is sent when it overflows or
270     * is flushed by \c __glXFlushRenderBuffer.  \c pc is the next location
271     * in the buffer to be filled.  \c limit is described above in the buffer
272     * slop discussion.
273     *
274     * Commands that require large amounts of data to be transfered will
275     * also use this buffer to hold a header that describes the large
276     * command.
277     *
278     * These must be the first 6 fields since they are static initialized
279     * in the dummy context in glxext.c
280     */
281   /*@{ */
282   GLubyte *buf;
283   GLubyte *pc;
284   GLubyte *limit;
285   GLubyte *bufEnd;
286   GLint bufSize;
287   /*@} */
288
289    /**
290     * The XID of this rendering context.  When the context is created a
291     * new XID is allocated.  This is set to None when the context is
292     * destroyed but is still current to some thread. In this case the
293     * context will be freed on next MakeCurrent.
294     */
295   XID xid;
296
297    /**
298     * The XID of the \c shareList context.
299     */
300   XID share_xid;
301
302    /**
303     * Screen number.
304     */
305   GLint screen;
306   __GLXscreenConfigs *psc;
307
308    /**
309     * \c GL_TRUE if the context was created with ImportContext, which
310     * means the server-side context was created by another X client.
311     */
312   GLboolean imported;
313
314    /**
315     * The context tag returned by MakeCurrent when this context is made
316     * current. This tag is used to identify the context that a thread has
317     * current so that proper server context management can be done.  It is
318     * used for all context specific commands (i.e., \c Render, \c RenderLarge,
319     * \c WaitX, \c WaitGL, \c UseXFont, and \c MakeCurrent (for the old
320     * context)).
321     */
322   GLXContextTag currentContextTag;
323
324    /**
325     * \name Rendering mode
326     *
327     * The rendering mode is kept on the client as well as the server.
328     * When \c glRenderMode is called, the buffer associated with the
329     * previous rendering mode (feedback or select) is filled.
330     */
331   /*@{ */
332   GLenum renderMode;
333   GLfloat *feedbackBuf;
334   GLuint *selectBuf;
335   /*@} */
336
337    /**
338     * This is \c GL_TRUE if the pixel unpack modes are such that an image
339     * can be unpacked from the clients memory by just copying.  It may
340     * still be true that the server will have to do some work.  This
341     * just promises that a straight copy will fetch the correct bytes.
342     */
343   GLboolean fastImageUnpack;
344
345    /**
346     * Fill newImage with the unpacked form of \c oldImage getting it
347     * ready for transport to the server.
348     */
349   void (*fillImage) (__GLXcontext *, GLint, GLint, GLint, GLint, GLenum,
350                      GLenum, const GLvoid *, GLubyte *, GLubyte *);
351
352    /**
353     * Client side attribs.
354     */
355   __GLXattributeMachine attributes;
356
357    /**
358     * Client side error code.  This is set when client side gl API
359     * routines need to set an error because of a bad enumerant or
360     * running out of memory, etc.
361     */
362   GLenum error;
363
364    /**
365     * Whether this context does direct rendering.
366     */
367   Bool isDirect;
368
369    /**
370     * \c dpy of current display for this context.  Will be \c NULL if not
371     * current to any display, or if this is the "dummy context".
372     */
373   Display *currentDpy;
374
375    /**
376     * The current drawable for this context.  Will be None if this
377     * context is not current to any drawable.  currentReadable is below.
378     */
379   GLXDrawable currentDrawable;
380
381    /**
382     * \name GL Constant Strings
383     *
384     * Constant strings that describe the server implementation
385     * These pertain to GL attributes, not to be confused with
386     * GLX versioning attributes.
387     */
388   /*@{ */
389   GLubyte *vendor;
390   GLubyte *renderer;
391   GLubyte *version;
392   GLubyte *extensions;
393   /*@} */
394
395    /**
396     * Record the dpy this context was created on for later freeing
397     */
398   Display *createDpy;
399
400    /**
401     * Maximum small render command size.  This is the smaller of 64k and
402     * the size of the above buffer.
403     */
404   GLint maxSmallRenderCommandSize;
405
406    /**
407     * Major opcode for the extension.  Copied here so a lookup isn't
408     * needed.
409     */
410   GLint majorOpcode;
411
412    /**
413     * Pointer to the mode used to create this context.
414     */
415   const __GLcontextModes *mode;
416
417#ifdef GLX_DIRECT_RENDERING
418#ifdef GLX_USE_APPLEGL
419   void *driContext;
420   Bool do_destroy;
421#else
422   __GLXDRIcontext *driContext;
423   __DRIcontext *__driContext;
424#endif
425#endif
426
427    /**
428     * The current read-drawable for this context.  Will be None if this
429     * context is not current to any drawable.
430     *
431     * \since Internal API version 20030606.
432     */
433   GLXDrawable currentReadable;
434
435   /**
436    * Pointer to client-state data that is private to libGL.  This is only
437    * used for indirect rendering contexts.
438    *
439    * No internal API version change was made for this change.  Client-side
440    * drivers should NEVER use this data or even care that it exists.
441    */
442   void *client_state_private;
443
444   /**
445    * Stored value for \c glXQueryContext attribute \c GLX_RENDER_TYPE.
446    */
447   int renderType;
448
449   /**
450    * \name Raw server GL version
451    *
452    * True core GL version supported by the server.  This is the raw value
453    * returned by the server, and it may not reflect what is actually
454    * supported (or reported) by the client-side library.
455    */
456   /*@{ */
457   int server_major;        /**< Major version number. */
458   int server_minor;        /**< Minor version number. */
459   /*@} */
460
461   /**
462    * Thread ID we're currently current in. Zero if none.
463    */
464   unsigned long thread_id;
465
466   char gl_extension_bits[__GL_EXT_BYTES];
467
468   const struct glx_context_vtable *vtable;
469};
470
471#define __glXSetError(gc,code)  \
472   if (!(gc)->error) {          \
473      (gc)->error = code;       \
474   }
475
476extern void __glFreeAttributeState(__GLXcontext *);
477
478/************************************************************************/
479
480/**
481 * The size of the largest drawing command known to the implementation
482 * that will use the GLXRender GLX command.  In this case it is
483 * \c glPolygonStipple.
484 */
485#define __GLX_MAX_SMALL_RENDER_CMD_SIZE 156
486
487/**
488 * To keep the implementation fast, the code uses a "limit" pointer
489 * to determine when the drawing command buffer is too full to hold
490 * another fixed size command.  This constant defines the amount of
491 * space that must always be available in the drawing command buffer
492 * at all times for the implementation to work.  It is important that
493 * the number be just large enough, but not so large as to reduce the
494 * efficacy of the buffer.  The "+32" is just to keep the code working
495 * in case somebody counts wrong.
496 */
497#define __GLX_BUFFER_LIMIT_SIZE (__GLX_MAX_SMALL_RENDER_CMD_SIZE + 32)
498
499/**
500 * This implementation uses a smaller threshold for switching
501 * to the RenderLarge protocol than the protcol requires so that
502 * large copies don't occur.
503 */
504#define __GLX_RENDER_CMD_SIZE_LIMIT 4096
505
506/**
507 * One of these records exists per screen of the display.  It contains
508 * a pointer to the config data for that screen (if the screen supports GL).
509 */
510struct __GLXscreenConfigsRec
511{
512    /**
513     * GLX extension string reported by the X-server.
514     */
515   const char *serverGLXexts;
516
517    /**
518     * GLX extension string to be reported to applications.  This is the
519     * set of extensions that the application can actually use.
520     */
521   char *effectiveGLXexts;
522
523   /**
524    * Context vtable to use for direct contexts on this screen
525    */
526   const struct glx_context_vtable *direct_context_vtable;
527
528#if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
529    /**
530     * Per screen direct rendering interface functions and data.
531     */
532   __DRIscreen *__driScreen;
533   const __DRIcoreExtension *core;
534   const __DRIlegacyExtension *legacy;
535   const __DRIswrastExtension *swrast;
536   const __DRIdri2Extension *dri2;
537   __glxHashTable *drawHash;
538   Display *dpy;
539   int scr, fd;
540   void *driver;
541
542   __GLXDRIscreen *driScreen;
543
544   const __DRIconfig **driver_configs;
545
546#ifdef __DRI_COPY_SUB_BUFFER
547   const __DRIcopySubBufferExtension *driCopySubBuffer;
548#endif
549
550#ifdef __DRI_SWAP_CONTROL
551   const __DRIswapControlExtension *swapControl;
552#endif
553
554#ifdef __DRI_ALLOCATE
555   const __DRIallocateExtension *allocate;
556#endif
557
558#ifdef __DRI_FRAME_TRACKING
559   const __DRIframeTrackingExtension *frameTracking;
560#endif
561
562#ifdef __DRI_MEDIA_STREAM_COUNTER
563   const __DRImediaStreamCounterExtension *msc;
564#endif
565
566#ifdef __DRI_TEX_BUFFER
567   const __DRItexBufferExtension *texBuffer;
568#endif
569
570#ifdef __DRI2_FLUSH
571   const __DRI2flushExtension *f;
572#endif
573
574#ifdef __DRI2_CONFIG_QUERY
575   const __DRI2configQueryExtension *config;
576#endif
577
578#endif
579
580    /**
581     * Linked list of glx visuals and  fbconfigs for this screen.
582     */
583   __GLcontextModes *visuals, *configs;
584
585    /**
586     * Per-screen dynamic GLX extension tracking.  The \c direct_support
587     * field only contains enough bits for 64 extensions.  Should libGL
588     * ever need to track more than 64 GLX extensions, we can safely grow
589     * this field.  The \c __GLXscreenConfigs structure is not used outside
590     * libGL.
591     */
592   /*@{ */
593   unsigned char direct_support[8];
594   GLboolean ext_list_first_time;
595   /*@} */
596
597};
598
599/**
600 * Per display private data.  One of these records exists for each display
601 * that is using the OpenGL (GLX) extension.
602 */
603struct __GLXdisplayPrivateRec
604{
605    /**
606     * Back pointer to the display
607     */
608   Display *dpy;
609
610    /**
611     * The \c majorOpcode is common to all connections to the same server.
612     * It is also copied into the context structure.
613     */
614   int majorOpcode;
615
616    /**
617     * \name Server Version
618     *
619     * Major and minor version returned by the server during initialization.
620     */
621   /*@{ */
622   int majorVersion, minorVersion;
623   /*@} */
624
625    /**
626     * \name Storage for the servers GLX vendor and versions strings.
627     *
628     * These are the same for all screens on this display. These fields will
629     * be filled in on demand.
630     */
631   /*@{ */
632   const char *serverGLXvendor;
633   const char *serverGLXversion;
634   /*@} */
635
636    /**
637     * Configurations of visuals for all screens on this display.
638     * Also, per screen data which now includes the server \c GLX_EXTENSION
639     * string.
640     */
641   __GLXscreenConfigs *screenConfigs;
642
643#if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
644    /**
645     * Per display direct rendering interface functions and data.
646     */
647   __GLXDRIdisplay *driswDisplay;
648   __GLXDRIdisplay *driDisplay;
649   __GLXDRIdisplay *dri2Display;
650#endif
651};
652
653extern __GLXDRIdrawable *
654dri2GetGlxDrawableFromXDrawableId(Display *dpy, XID id);
655
656extern GLubyte *__glXFlushRenderBuffer(__GLXcontext *, GLubyte *);
657
658extern void __glXSendLargeChunk(__GLXcontext * gc, GLint requestNumber,
659                                GLint totalRequests,
660                                const GLvoid * data, GLint dataLen);
661
662extern void __glXSendLargeCommand(__GLXcontext *, const GLvoid *, GLint,
663                                  const GLvoid *, GLint);
664
665/* Initialize the GLX extension for dpy */
666extern __GLXdisplayPrivate *__glXInitialize(Display *);
667
668extern void __glXPreferEGL(int state);
669
670/************************************************************************/
671
672extern int __glXDebug;
673
674/* This is per-thread storage in an MT environment */
675#if defined( PTHREADS )
676
677extern void __glXSetCurrentContext(__GLXcontext * c);
678
679# if defined( GLX_USE_TLS )
680
681extern __thread void *__glX_tls_Context
682   __attribute__ ((tls_model("initial-exec")));
683
684#  define __glXGetCurrentContext() __glX_tls_Context
685
686# else
687
688extern __GLXcontext *__glXGetCurrentContext(void);
689
690# endif /* defined( GLX_USE_TLS ) */
691
692#else
693
694extern __GLXcontext *__glXcurrentContext;
695#define __glXGetCurrentContext() __glXcurrentContext
696#define __glXSetCurrentContext(gc) __glXcurrentContext = gc
697
698#endif /* defined( PTHREADS ) */
699
700extern void __glXSetCurrentContextNull(void);
701
702extern void __glXFreeContext(__GLXcontext *);
703
704
705/*
706** Global lock for all threads in this address space using the GLX
707** extension
708*/
709#if defined( PTHREADS )
710extern pthread_mutex_t __glXmutex;
711#define __glXLock()    pthread_mutex_lock(&__glXmutex)
712#define __glXUnlock()  pthread_mutex_unlock(&__glXmutex)
713#else
714#define __glXLock()
715#define __glXUnlock()
716#endif
717
718/*
719** Setup for a command.  Initialize the extension for dpy if necessary.
720*/
721extern CARD8 __glXSetupForCommand(Display * dpy);
722
723/************************************************************************/
724
725/*
726** Data conversion and packing support.
727*/
728
729extern const GLuint __glXDefaultPixelStore[9];
730
731/* Send an image to the server using RenderLarge. */
732extern void __glXSendLargeImage(__GLXcontext * gc, GLint compsize, GLint dim,
733                                GLint width, GLint height, GLint depth,
734                                GLenum format, GLenum type,
735                                const GLvoid * src, GLubyte * pc,
736                                GLubyte * modes);
737
738/* Return the size, in bytes, of some pixel data */
739extern GLint __glImageSize(GLint, GLint, GLint, GLenum, GLenum, GLenum);
740
741/* Return the number of elements per group of a specified format*/
742extern GLint __glElementsPerGroup(GLenum format, GLenum type);
743
744/* Return the number of bytes per element, based on the element type (other
745** than GL_BITMAP).
746*/
747extern GLint __glBytesPerElement(GLenum type);
748
749/*
750** Fill the transport buffer with the data from the users buffer,
751** applying some of the pixel store modes (unpack modes) to the data
752** first.  As a side effect of this call, the "modes" field is
753** updated to contain the modes needed by the server to decode the
754** sent data.
755*/
756extern void __glFillImage(__GLXcontext *, GLint, GLint, GLint, GLint, GLenum,
757                          GLenum, const GLvoid *, GLubyte *, GLubyte *);
758
759/* Copy map data with a stride into a packed buffer */
760extern void __glFillMap1f(GLint, GLint, GLint, const GLfloat *, GLubyte *);
761extern void __glFillMap1d(GLint, GLint, GLint, const GLdouble *, GLubyte *);
762extern void __glFillMap2f(GLint, GLint, GLint, GLint, GLint,
763                          const GLfloat *, GLfloat *);
764extern void __glFillMap2d(GLint, GLint, GLint, GLint, GLint,
765                          const GLdouble *, GLdouble *);
766
767/*
768** Empty an image out of the reply buffer into the clients memory applying
769** the pack modes to pack back into the clients requested format.
770*/
771extern void __glEmptyImage(__GLXcontext *, GLint, GLint, GLint, GLint, GLenum,
772                           GLenum, const GLubyte *, GLvoid *);
773
774
775/*
776** Allocate and Initialize Vertex Array client state, and free.
777*/
778extern void __glXInitVertexArrayState(__GLXcontext *);
779extern void __glXFreeVertexArrayState(__GLXcontext *);
780
781/*
782** Inform the Server of the major and minor numbers and of the client
783** libraries extension string.
784*/
785extern void __glXClientInfo(Display * dpy, int opcode);
786
787/************************************************************************/
788
789/*
790** Declarations that should be in Xlib
791*/
792#ifdef __GL_USE_OUR_PROTOTYPES
793extern void _XFlush(Display *);
794extern Status _XReply(Display *, xReply *, int, Bool);
795extern void _XRead(Display *, void *, long);
796extern void _XSend(Display *, const void *, long);
797#endif
798
799
800extern void __glXInitializeVisualConfigFromTags(__GLcontextModes * config,
801                                                int count, const INT32 * bp,
802                                                Bool tagged_only,
803                                                Bool fbconfig_style_tags);
804
805extern char *__glXQueryServerString(Display * dpy, int opcode,
806                                    CARD32 screen, CARD32 name);
807extern char *__glXGetString(Display * dpy, int opcode,
808                            CARD32 screen, CARD32 name);
809
810extern char *__glXstrdup(const char *str);
811
812
813extern const char __glXGLClientVersion[];
814extern const char __glXGLClientExtensions[];
815
816/* Get the unadjusted system time */
817extern int __glXGetUST(int64_t * ust);
818
819extern GLboolean __glXGetMscRateOML(Display * dpy, GLXDrawable drawable,
820                                    int32_t * numerator,
821                                    int32_t * denominator);
822
823#if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
824GLboolean
825__driGetMscRateOML(__DRIdrawable * draw,
826                   int32_t * numerator, int32_t * denominator, void *private);
827
828/* So that dri2.c:DRI2WireToEvent() can access
829 * glx_info->codes->first_event */
830XExtDisplayInfo *__glXFindDisplay (Display *dpy);
831
832extern __GLXDRIdrawable *
833GetGLXDRIDrawable(Display *dpy, GLXDrawable drawable, int *const scrn_num);
834
835#endif
836
837#endif /* !__GLX_client_h__ */
838