glxclient.h revision f972115d33e391499e049b83a1559959f2ca9f72 
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   __GLXscreenConfigs *(*createScreen)(int screen, __GLXdisplayPrivate * priv);
125};
126
127struct __GLXDRIscreenRec {
128
129   void (*destroyScreen)(__GLXscreenConfigs *psc);
130
131   __GLXDRIcontext *(*createContext)(__GLXscreenConfigs *psc,
132				     const __GLcontextModes *mode,
133				     GLXContext gc,
134				     GLXContext shareList, int renderType);
135
136   __GLXDRIdrawable *(*createDrawable)(__GLXscreenConfigs *psc,
137				       XID drawable,
138				       GLXDrawable glxDrawable,
139				       const __GLcontextModes *modes);
140
141   int64_t (*swapBuffers)(__GLXDRIdrawable *pdraw, int64_t target_msc,
142			  int64_t divisor, int64_t remainder);
143   void (*copySubBuffer)(__GLXDRIdrawable *pdraw,
144			 int x, int y, int width, int height);
145   void (*waitX)(__GLXDRIdrawable *pdraw);
146   void (*waitGL)(__GLXDRIdrawable *pdraw);
147   int (*getDrawableMSC)(__GLXscreenConfigs *psc, __GLXDRIdrawable *pdraw,
148			 int64_t *ust, int64_t *msc, int64_t *sbc);
149   int (*waitForMSC)(__GLXDRIdrawable *pdraw, int64_t target_msc,
150		     int64_t divisor, int64_t remainder, int64_t *ust,
151		     int64_t *msc, int64_t *sbc);
152   int (*waitForSBC)(__GLXDRIdrawable *pdraw, int64_t target_sbc, int64_t *ust,
153		     int64_t *msc, int64_t *sbc);
154   void (*setSwapInterval)(__GLXDRIdrawable *pdraw, int interval);
155   int (*getSwapInterval)(__GLXDRIdrawable *pdraw);
156};
157
158struct __GLXDRIcontextRec
159{
160   void (*destroyContext) (__GLXDRIcontext * context,
161                           __GLXscreenConfigs * psc, Display * dpy);
162     Bool(*bindContext) (__GLXDRIcontext * context, __GLXDRIdrawable * pdraw,
163                         __GLXDRIdrawable * pread);
164
165   void (*unbindContext) (__GLXDRIcontext * context);
166};
167
168struct __GLXDRIdrawableRec
169{
170   void (*destroyDrawable) (__GLXDRIdrawable * drawable);
171
172   XID xDrawable;
173   XID drawable;
174   __GLXscreenConfigs *psc;
175   GLenum textureTarget;
176   __DRIdrawable *driDrawable;
177   GLenum textureFormat;        /* EXT_texture_from_pixmap support */
178   unsigned long eventMask;
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   __glxHashTable *drawHash;
533   Display *dpy;
534   int scr;
535
536   __GLXDRIscreen *driScreen;
537
538   const __DRIconfig **driver_configs;
539
540#ifdef __DRI_COPY_SUB_BUFFER
541   const __DRIcopySubBufferExtension *driCopySubBuffer;
542#endif
543
544#ifdef __DRI_SWAP_CONTROL
545   const __DRIswapControlExtension *swapControl;
546#endif
547
548#ifdef __DRI_ALLOCATE
549   const __DRIallocateExtension *allocate;
550#endif
551
552#ifdef __DRI_FRAME_TRACKING
553   const __DRIframeTrackingExtension *frameTracking;
554#endif
555
556#ifdef __DRI_MEDIA_STREAM_COUNTER
557   const __DRImediaStreamCounterExtension *msc;
558#endif
559
560#ifdef __DRI_TEX_BUFFER
561   const __DRItexBufferExtension *texBuffer;
562#endif
563
564#ifdef __DRI2_FLUSH
565   const __DRI2flushExtension *f;
566#endif
567
568#ifdef __DRI2_CONFIG_QUERY
569   const __DRI2configQueryExtension *config;
570#endif
571
572#endif
573
574    /**
575     * Linked list of glx visuals and  fbconfigs for this screen.
576     */
577   __GLcontextModes *visuals, *configs;
578
579    /**
580     * Per-screen dynamic GLX extension tracking.  The \c direct_support
581     * field only contains enough bits for 64 extensions.  Should libGL
582     * ever need to track more than 64 GLX extensions, we can safely grow
583     * this field.  The \c __GLXscreenConfigs structure is not used outside
584     * libGL.
585     */
586   /*@{ */
587   unsigned char direct_support[8];
588   GLboolean ext_list_first_time;
589   /*@} */
590
591};
592
593/**
594 * Per display private data.  One of these records exists for each display
595 * that is using the OpenGL (GLX) extension.
596 */
597struct __GLXdisplayPrivateRec
598{
599    /**
600     * Back pointer to the display
601     */
602   Display *dpy;
603
604    /**
605     * The \c majorOpcode is common to all connections to the same server.
606     * It is also copied into the context structure.
607     */
608   int majorOpcode;
609
610    /**
611     * \name Server Version
612     *
613     * Major and minor version returned by the server during initialization.
614     */
615   /*@{ */
616   int majorVersion, minorVersion;
617   /*@} */
618
619    /**
620     * \name Storage for the servers GLX vendor and versions strings.
621     *
622     * These are the same for all screens on this display. These fields will
623     * be filled in on demand.
624     */
625   /*@{ */
626   const char *serverGLXvendor;
627   const char *serverGLXversion;
628   /*@} */
629
630    /**
631     * Configurations of visuals for all screens on this display.
632     * Also, per screen data which now includes the server \c GLX_EXTENSION
633     * string.
634     */
635   __GLXscreenConfigs **screenConfigs;
636
637#if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
638    /**
639     * Per display direct rendering interface functions and data.
640     */
641   __GLXDRIdisplay *driswDisplay;
642   __GLXDRIdisplay *driDisplay;
643   __GLXDRIdisplay *dri2Display;
644#endif
645};
646
647extern int
648glx_screen_init(__GLXscreenConfigs *psc,
649		int screen, __GLXdisplayPrivate * priv);
650
651extern __GLXDRIdrawable *
652dri2GetGlxDrawableFromXDrawableId(Display *dpy, XID id);
653
654extern GLubyte *__glXFlushRenderBuffer(__GLXcontext *, GLubyte *);
655
656extern void __glXSendLargeChunk(__GLXcontext * gc, GLint requestNumber,
657                                GLint totalRequests,
658                                const GLvoid * data, GLint dataLen);
659
660extern void __glXSendLargeCommand(__GLXcontext *, const GLvoid *, GLint,
661                                  const GLvoid *, GLint);
662
663/* Initialize the GLX extension for dpy */
664extern __GLXdisplayPrivate *__glXInitialize(Display *);
665
666extern void __glXPreferEGL(int state);
667
668/************************************************************************/
669
670extern int __glXDebug;
671
672/* This is per-thread storage in an MT environment */
673#if defined( PTHREADS )
674
675extern void __glXSetCurrentContext(__GLXcontext * c);
676
677# if defined( GLX_USE_TLS )
678
679extern __thread void *__glX_tls_Context
680   __attribute__ ((tls_model("initial-exec")));
681
682#  define __glXGetCurrentContext() __glX_tls_Context
683
684# else
685
686extern __GLXcontext *__glXGetCurrentContext(void);
687
688# endif /* defined( GLX_USE_TLS ) */
689
690#else
691
692extern __GLXcontext *__glXcurrentContext;
693#define __glXGetCurrentContext() __glXcurrentContext
694#define __glXSetCurrentContext(gc) __glXcurrentContext = gc
695
696#endif /* defined( PTHREADS ) */
697
698extern void __glXSetCurrentContextNull(void);
699
700extern void __glXFreeContext(__GLXcontext *);
701
702
703/*
704** Global lock for all threads in this address space using the GLX
705** extension
706*/
707#if defined( PTHREADS )
708extern pthread_mutex_t __glXmutex;
709#define __glXLock()    pthread_mutex_lock(&__glXmutex)
710#define __glXUnlock()  pthread_mutex_unlock(&__glXmutex)
711#else
712#define __glXLock()
713#define __glXUnlock()
714#endif
715
716/*
717** Setup for a command.  Initialize the extension for dpy if necessary.
718*/
719extern CARD8 __glXSetupForCommand(Display * dpy);
720
721/************************************************************************/
722
723/*
724** Data conversion and packing support.
725*/
726
727extern const GLuint __glXDefaultPixelStore[9];
728
729/* Send an image to the server using RenderLarge. */
730extern void __glXSendLargeImage(__GLXcontext * gc, GLint compsize, GLint dim,
731                                GLint width, GLint height, GLint depth,
732                                GLenum format, GLenum type,
733                                const GLvoid * src, GLubyte * pc,
734                                GLubyte * modes);
735
736/* Return the size, in bytes, of some pixel data */
737extern GLint __glImageSize(GLint, GLint, GLint, GLenum, GLenum, GLenum);
738
739/* Return the number of elements per group of a specified format*/
740extern GLint __glElementsPerGroup(GLenum format, GLenum type);
741
742/* Return the number of bytes per element, based on the element type (other
743** than GL_BITMAP).
744*/
745extern GLint __glBytesPerElement(GLenum type);
746
747/*
748** Fill the transport buffer with the data from the users buffer,
749** applying some of the pixel store modes (unpack modes) to the data
750** first.  As a side effect of this call, the "modes" field is
751** updated to contain the modes needed by the server to decode the
752** sent data.
753*/
754extern void __glFillImage(__GLXcontext *, GLint, GLint, GLint, GLint, GLenum,
755                          GLenum, const GLvoid *, GLubyte *, GLubyte *);
756
757/* Copy map data with a stride into a packed buffer */
758extern void __glFillMap1f(GLint, GLint, GLint, const GLfloat *, GLubyte *);
759extern void __glFillMap1d(GLint, GLint, GLint, const GLdouble *, GLubyte *);
760extern void __glFillMap2f(GLint, GLint, GLint, GLint, GLint,
761                          const GLfloat *, GLfloat *);
762extern void __glFillMap2d(GLint, GLint, GLint, GLint, GLint,
763                          const GLdouble *, GLdouble *);
764
765/*
766** Empty an image out of the reply buffer into the clients memory applying
767** the pack modes to pack back into the clients requested format.
768*/
769extern void __glEmptyImage(__GLXcontext *, GLint, GLint, GLint, GLint, GLenum,
770                           GLenum, const GLubyte *, GLvoid *);
771
772
773/*
774** Allocate and Initialize Vertex Array client state, and free.
775*/
776extern void __glXInitVertexArrayState(__GLXcontext *);
777extern void __glXFreeVertexArrayState(__GLXcontext *);
778
779/*
780** Inform the Server of the major and minor numbers and of the client
781** libraries extension string.
782*/
783extern void __glXClientInfo(Display * dpy, int opcode);
784
785/************************************************************************/
786
787/*
788** Declarations that should be in Xlib
789*/
790#ifdef __GL_USE_OUR_PROTOTYPES
791extern void _XFlush(Display *);
792extern Status _XReply(Display *, xReply *, int, Bool);
793extern void _XRead(Display *, void *, long);
794extern void _XSend(Display *, const void *, long);
795#endif
796
797
798extern void __glXInitializeVisualConfigFromTags(__GLcontextModes * config,
799                                                int count, const INT32 * bp,
800                                                Bool tagged_only,
801                                                Bool fbconfig_style_tags);
802
803extern char *__glXQueryServerString(Display * dpy, int opcode,
804                                    CARD32 screen, CARD32 name);
805extern char *__glXGetString(Display * dpy, int opcode,
806                            CARD32 screen, CARD32 name);
807
808extern char *__glXstrdup(const char *str);
809
810
811extern const char __glXGLClientVersion[];
812extern const char __glXGLClientExtensions[];
813
814/* Get the unadjusted system time */
815extern int __glXGetUST(int64_t * ust);
816
817extern GLboolean __glXGetMscRateOML(Display * dpy, GLXDrawable drawable,
818                                    int32_t * numerator,
819                                    int32_t * denominator);
820
821#if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
822GLboolean
823__driGetMscRateOML(__DRIdrawable * draw,
824                   int32_t * numerator, int32_t * denominator, void *private);
825
826/* So that dri2.c:DRI2WireToEvent() can access
827 * glx_info->codes->first_event */
828XExtDisplayInfo *__glXFindDisplay (Display *dpy);
829
830extern __GLXDRIdrawable *
831GetGLXDRIDrawable(Display *dpy, GLXDrawable drawable, int *const scrn_num);
832
833#endif
834
835#endif /* !__GLX_client_h__ */
836