summaryrefslogtreecommitdiff
path: root/src/glx/glxclient.h
blob: 0d29e5635e97e4e72680b6f412bc7aaa71d9708f (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
/*
 * SGI FREE SOFTWARE LICENSE B (Version 2.0, Sept. 18, 2008)
 * Copyright (C) 1991-2000 Silicon Graphics, Inc. All Rights Reserved.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice including the dates of first publication and
 * either this permission notice or a reference to
 * http://oss.sgi.com/projects/FreeB/
 * shall be included in all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
 * SILICON GRAPHICS, INC. BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
 * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
 * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 *
 * Except as contained in this notice, the name of Silicon Graphics, Inc.
 * shall not be used in advertising or otherwise to promote the sale, use or
 * other dealings in this Software without prior written authorization from
 * Silicon Graphics, Inc.
 */

/**
 * \file glxclient.h
 * Direct rendering support added by Precision Insight, Inc.
 *
 * \author Kevin E. Martin <kevin@precisioninsight.com>
 */

#ifndef _GLX_client_h_
#define _GLX_client_h_
#include <X11/Xproto.h>
#include <X11/Xlibint.h>
#include <X11/Xfuncproto.h>
#include <X11/extensions/extutil.h>
#define GLX_GLXEXT_PROTOTYPES
#include <GL/glx.h>
#include <GL/glxext.h>
#include <string.h>
#include <stdlib.h>
#include <stdio.h>
#include <stdint.h>
#include <pthread.h>
#include "GL/glxproto.h"
#include "glxconfig.h"
#include "glxhash.h"
#include "util/macros.h"

#include "glxextensions.h"

#if defined(USE_LIBGLVND)
#define _GLX_PUBLIC _X_HIDDEN
#else
#define _GLX_PUBLIC _X_EXPORT
#endif

#ifdef __cplusplus
extern "C" {
#endif


#define GLX_MAJOR_VERSION 1       /* current version numbers */
#define GLX_MINOR_VERSION 4

#define __GLX_MAX_TEXTURE_UNITS 32

struct glx_display;
struct glx_context;

/************************************************************************/

#ifdef GLX_DIRECT_RENDERING

extern void DRI_glXUseXFont(struct glx_context *ctx,
			    Font font, int first, int count, int listbase);

#endif

#if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)

/**
 * Display dependent methods.  This structure is initialized during the
 * \c driCreateDisplay call.
 */
typedef struct __GLXDRIdisplayRec __GLXDRIdisplay;
typedef struct __GLXDRIscreenRec __GLXDRIscreen;
typedef struct __GLXDRIdrawableRec __GLXDRIdrawable;

struct __GLXDRIdisplayRec
{
    /**
     * Method to destroy the private DRI display data.
     */
   void (*destroyDisplay) (__GLXDRIdisplay * display);

   struct glx_screen *(*createScreen)(int screen, struct glx_display * priv);
};

struct __GLXDRIscreenRec {

   void (*destroyScreen)(struct glx_screen *psc);

   struct glx_context *(*createContext)(struct glx_screen *psc,
					struct glx_config *config,
					struct glx_context *shareList,
					int renderType);

   __GLXDRIdrawable *(*createDrawable)(struct glx_screen *psc,
				       XID drawable,
				       GLXDrawable glxDrawable,
				       struct glx_config *config);

   int64_t (*swapBuffers)(__GLXDRIdrawable *pdraw, int64_t target_msc,
			  int64_t divisor, int64_t remainder, Bool flush);
   void (*copySubBuffer)(__GLXDRIdrawable *pdraw,
			 int x, int y, int width, int height, Bool flush);
   int (*getDrawableMSC)(struct glx_screen *psc, __GLXDRIdrawable *pdraw,
			 int64_t *ust, int64_t *msc, int64_t *sbc);
   int (*waitForMSC)(__GLXDRIdrawable *pdraw, int64_t target_msc,
		     int64_t divisor, int64_t remainder, int64_t *ust,
		     int64_t *msc, int64_t *sbc);
   int (*waitForSBC)(__GLXDRIdrawable *pdraw, int64_t target_sbc, int64_t *ust,
		     int64_t *msc, int64_t *sbc);
   int (*setSwapInterval)(__GLXDRIdrawable *pdraw, int interval);
   int (*getSwapInterval)(__GLXDRIdrawable *pdraw);
   int (*getBufferAge)(__GLXDRIdrawable *pdraw);
};

struct __GLXDRIdrawableRec
{
   void (*destroyDrawable) (__GLXDRIdrawable * drawable);

   XID xDrawable;
   XID drawable;
   struct glx_screen *psc;
   GLenum textureTarget;
   GLenum textureFormat;        /* EXT_texture_from_pixmap support */
   unsigned long eventMask;
   int refcount;
};

/*
** Function to create and DRI display data and initialize the display
** dependent methods.
*/
extern __GLXDRIdisplay *driswCreateDisplay(Display * dpy);
extern __GLXDRIdisplay *driCreateDisplay(Display * dpy);
extern __GLXDRIdisplay *dri2CreateDisplay(Display * dpy);
extern __GLXDRIdisplay *dri3_create_display(Display * dpy);
extern __GLXDRIdisplay *driwindowsCreateDisplay(Display * dpy);

/*
**
*/
extern void dri2InvalidateBuffers(Display *dpy, XID drawable);
extern unsigned dri2GetSwapEventType(Display *dpy, XID drawable);

/*
** Functions to obtain driver configuration information from a direct
** rendering client application
*/
extern const char *glXGetScreenDriver(Display * dpy, int scrNum);

extern const char *glXGetDriverConfig(const char *driverName);

#endif

/************************************************************************/

#define __GL_CLIENT_ATTRIB_STACK_DEPTH 16

typedef struct __GLXpixelStoreModeRec
{
   GLboolean swapEndian;
   GLboolean lsbFirst;
   GLuint rowLength;
   GLuint imageHeight;
   GLuint imageDepth;
   GLuint skipRows;
   GLuint skipPixels;
   GLuint skipImages;
   GLuint alignment;
} __GLXpixelStoreMode;


typedef struct __GLXattributeRec
{
   GLuint mask;

    /**
     * Pixel storage state.  Most of the pixel store mode state is kept
     * here and used by the client code to manage the packing and
     * unpacking of data sent to/received from the server.
     */
   __GLXpixelStoreMode storePack, storeUnpack;

    /**
     * Is EXT_vertex_array / GL 1.1 DrawArrays protocol specifically
     * disabled?
     */
   GLboolean NoDrawArraysProtocol;

    /**
     * Vertex Array storage state.  The vertex array component
     * state is stored here and is used to manage the packing of
     * DrawArrays data sent to the server.
     */
   struct array_state_vector *array_state;
} __GLXattribute;

typedef struct __GLXattributeMachineRec
{
   __GLXattribute *stack[__GL_CLIENT_ATTRIB_STACK_DEPTH];
   __GLXattribute **stackPointer;
} __GLXattributeMachine;

struct mesa_glinterop_device_info;
struct mesa_glinterop_export_in;
struct mesa_glinterop_export_out;

struct glx_context_vtable {
   void (*destroy)(struct glx_context *ctx);
   int (*bind)(struct glx_context *context, struct glx_context *old,
	       GLXDrawable draw, GLXDrawable read);
   void (*unbind)(struct glx_context *context, struct glx_context *new_ctx);
   void (*wait_gl)(struct glx_context *ctx);
   void (*wait_x)(struct glx_context *ctx);
   void (*use_x_font)(struct glx_context *ctx,
		      Font font, int first, int count, int listBase);
   void (*bind_tex_image)(Display * dpy,
			  GLXDrawable drawable,
			  int buffer, const int *attrib_list);
   void (*release_tex_image)(Display * dpy, GLXDrawable drawable, int buffer);
   void * (*get_proc_address)(const char *symbol);
   int (*interop_query_device_info)(struct glx_context *ctx,
                                    struct mesa_glinterop_device_info *out);
   int (*interop_export_object)(struct glx_context *ctx,
                                struct mesa_glinterop_export_in *in,
                                struct mesa_glinterop_export_out *out);
};

/**
 * GLX state that needs to be kept on the client.  One of these records
 * exist for each context that has been made current by this client.
 */
struct glx_context
{
    /**
     * \name Drawing command buffer.
     *
     * Drawing commands are packed into this buffer before being sent as a
     * single GLX protocol request.  The buffer is sent when it overflows or
     * is flushed by \c __glXFlushRenderBuffer.  \c pc is the next location
     * in the buffer to be filled.  \c limit is described above in the buffer
     * slop discussion.
     *
     * Commands that require large amounts of data to be transfered will
     * also use this buffer to hold a header that describes the large
     * command.
     *
     * These must be the first 6 fields since they are static initialized
     * in the dummy context in glxext.c
     */
   /*@{ */
   GLubyte *buf;
   GLubyte *pc;
   GLubyte *limit;
   GLubyte *bufEnd;
   GLint bufSize;
   /*@} */

   const struct glx_context_vtable *vtable;

    /**
     * The XID of this rendering context.  When the context is created a
     * new XID is allocated.  This is set to None when the context is
     * destroyed but is still current to some thread. In this case the
     * context will be freed on next MakeCurrent.
     */
   XID xid;

    /**
     * The XID of the \c shareList context.
     */
   XID share_xid;

    /**
     * Screen number.
     */
   GLint screen;
   struct glx_screen *psc;

    /**
     * \c GL_TRUE if the context was created with ImportContext, which
     * means the server-side context was created by another X client.
     */
   GLboolean imported;

    /**
     * The context tag returned by MakeCurrent when this context is made
     * current. This tag is used to identify the context that a thread has
     * current so that proper server context management can be done.  It is
     * used for all context specific commands (i.e., \c Render, \c RenderLarge,
     * \c WaitX, \c WaitGL, \c UseXFont, and \c MakeCurrent (for the old
     * context)).
     */
   GLXContextTag currentContextTag;

    /**
     * \name Rendering mode
     *
     * The rendering mode is kept on the client as well as the server.
     * When \c glRenderMode is called, the buffer associated with the
     * previous rendering mode (feedback or select) is filled.
     */
   /*@{ */
   GLenum renderMode;
   GLfloat *feedbackBuf;
   GLuint *selectBuf;
   /*@} */

    /**
     * Fill newImage with the unpacked form of \c oldImage getting it
     * ready for transport to the server.
     */
   void (*fillImage) (struct glx_context *, GLint, GLint, GLint, GLint, GLenum,
                      GLenum, const GLvoid *, GLubyte *, GLubyte *);

    /**
     * Client side attribs.
     */
   __GLXattributeMachine attributes;

    /**
     * Client side error code.  This is set when client side gl API
     * routines need to set an error because of a bad enumerant or
     * running out of memory, etc.
     */
   GLenum error;

    /**
     * Whether this context does direct rendering.
     */
   Bool isDirect;

#if defined(GLX_DIRECT_RENDERING) && defined(GLX_USE_APPLEGL)
   void *driContext;
#endif

    /**
     * \c dpy of current display for this context.  Will be \c NULL if not
     * current to any display, or if this is the "dummy context".
     */
   Display *currentDpy;

    /**
     * The current drawable for this context.  Will be None if this
     * context is not current to any drawable.  currentReadable is below.
     */
   GLXDrawable currentDrawable;

    /**
     * \name GL Constant Strings
     *
     * Constant strings that describe the server implementation
     * These pertain to GL attributes, not to be confused with
     * GLX versioning attributes.
     */
   /*@{ */
   GLubyte *vendor;
   GLubyte *renderer;
   GLubyte *version;
   GLubyte *extensions;
   /*@} */

    /**
     * Maximum small render command size.  This is the smaller of 64k and
     * the size of the above buffer.
     */
   GLint maxSmallRenderCommandSize;

    /**
     * Major opcode for the extension.  Copied here so a lookup isn't
     * needed.
     */
   GLint majorOpcode;

    /**
     * Pointer to the config used to create this context.
     */
   struct glx_config *config;

    /**
     * The current read-drawable for this context.  Will be None if this
     * context is not current to any drawable.
     *
     * \since Internal API version 20030606.
     */
   GLXDrawable currentReadable;

   /**
    * Pointer to client-state data that is private to libGL.  This is only
    * used for indirect rendering contexts.
    *
    * No internal API version change was made for this change.  Client-side
    * drivers should NEVER use this data or even care that it exists.
    */
   void *client_state_private;

   /**
    * Stored value for \c glXQueryContext attribute \c GLX_RENDER_TYPE.
    */
   int renderType;

   /**
    * \name Raw server GL version
    *
    * True core GL version supported by the server.  This is the raw value
    * returned by the server, and it may not reflect what is actually
    * supported (or reported) by the client-side library.
    */
   /*@{ */
   int server_major;        /**< Major version number. */
   int server_minor;        /**< Minor version number. */
   /*@} */

   /**
    * Number of threads we're currently current in.
    */
   unsigned long thread_refcount;

   char gl_extension_bits[__GL_EXT_BYTES];
};

extern Bool
glx_context_init(struct glx_context *gc,
		 struct glx_screen *psc, struct glx_config *fbconfig);

#define __glXSetError(gc,code)  \
   if (!(gc)->error) {          \
      (gc)->error = code;       \
   }

extern void __glFreeAttributeState(struct glx_context *);

/************************************************************************/

/**
 * The size of the largest drawing command known to the implementation
 * that will use the GLXRender GLX command.  In this case it is
 * \c glPolygonStipple.
 */
#define __GLX_MAX_SMALL_RENDER_CMD_SIZE 156

/**
 * To keep the implementation fast, the code uses a "limit" pointer
 * to determine when the drawing command buffer is too full to hold
 * another fixed size command.  This constant defines the amount of
 * space that must always be available in the drawing command buffer
 * at all times for the implementation to work.  It is important that
 * the number be just large enough, but not so large as to reduce the
 * efficacy of the buffer.  The "+32" is just to keep the code working
 * in case somebody counts wrong.
 */
#define __GLX_BUFFER_LIMIT_SIZE (__GLX_MAX_SMALL_RENDER_CMD_SIZE + 32)

/**
 * This implementation uses a smaller threshold for switching
 * to the RenderLarge protocol than the protcol requires so that
 * large copies don't occur.
 */
#define __GLX_RENDER_CMD_SIZE_LIMIT 4096

/**
 * One of these records exists per screen of the display.  It contains
 * a pointer to the config data for that screen (if the screen supports GL).
 */
struct glx_screen_vtable {
   struct glx_context *(*create_context)(struct glx_screen *psc,
					 struct glx_config *config,
					 struct glx_context *shareList,
					 int renderType);

   struct glx_context *(*create_context_attribs)(struct glx_screen *psc,
						 struct glx_config *config,
						 struct glx_context *shareList,
						 unsigned num_attrib,
						 const uint32_t *attribs,
						 unsigned *error);
   int (*query_renderer_integer)(struct glx_screen *psc,
                                 int attribute,
                                 unsigned int *value);
   int (*query_renderer_string)(struct glx_screen *psc,
                                int attribute,
                                const char **value);
};

struct glx_screen
{
   const struct glx_screen_vtable *vtable;

    /**
     * GLX extension string reported by the X-server.
     */
   const char *serverGLXexts;

    /**
     * GLX extension string to be reported to applications.  This is the
     * set of extensions that the application can actually use.
     */
   char *effectiveGLXexts;

   struct glx_display *display;

   Display *dpy;
   int scr;

#if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
    /**
     * Per screen direct rendering interface functions and data.
     */
   __GLXDRIscreen *driScreen;
#endif

    /**
     * Linked list of glx visuals and  fbconfigs for this screen.
     */
   struct glx_config *visuals, *configs;

    /**
     * Per-screen dynamic GLX extension tracking.  The \c direct_support
     * field only contains enough bits for 64 extensions.  Should libGL
     * ever need to track more than 64 GLX extensions, we can safely grow
     * this field.  The \c struct glx_screen structure is not used outside
     * libGL.
     */
   /*@{ */
   unsigned char direct_support[8];
   GLboolean ext_list_first_time;
   /*@} */

};

/**
 * Per display private data.  One of these records exists for each display
 * that is using the OpenGL (GLX) extension.
 */
struct glx_display
{
   /* The extension protocol codes */
   XExtCodes *codes;
   struct glx_display *next;

    /**
     * Back pointer to the display
     */
   Display *dpy;

    /**
     * The \c majorOpcode is common to all connections to the same server.
     * It is also copied into the context structure.
     */
   int majorOpcode;

    /**
     * \name Server Version
     *
     * Major and minor version returned by the server during initialization.
     */
   /*@{ */
   int majorVersion, minorVersion;
   /*@} */

    /**
     * \name Storage for the servers GLX vendor and versions strings.
     *
     * These are the same for all screens on this display. These fields will
     * be filled in on demand.
     */
   /*@{ */
   const char *serverGLXvendor;
   const char *serverGLXversion;
   /*@} */

    /**
     * Configurations of visuals for all screens on this display.
     * Also, per screen data which now includes the server \c GLX_EXTENSION
     * string.
     */
   struct glx_screen **screens;

   __glxHashTable *glXDrawHash;

#if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
   __glxHashTable *drawHash;

    /**
     * Per display direct rendering interface functions and data.
     */
   __GLXDRIdisplay *driswDisplay;
   __GLXDRIdisplay *driDisplay;
   __GLXDRIdisplay *dri2Display;
   __GLXDRIdisplay *dri3Display;
#endif
#ifdef GLX_USE_WINDOWSGL
   __GLXDRIdisplay *windowsdriDisplay;
#endif
};

struct glx_drawable {
   XID xDrawable;
   XID drawable;

   uint32_t lastEventSbc;
   int64_t eventSbcWrap;
};

extern int
glx_screen_init(struct glx_screen *psc,
		int screen, struct glx_display * priv);
extern void
glx_screen_cleanup(struct glx_screen *psc);

#if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
extern __GLXDRIdrawable *
dri2GetGlxDrawableFromXDrawableId(Display *dpy, XID id);
#endif

extern GLubyte *__glXFlushRenderBuffer(struct glx_context *, GLubyte *);

extern void __glXSendLargeChunk(struct glx_context * gc, GLint requestNumber,
                                GLint totalRequests,
                                const GLvoid * data, GLint dataLen);

extern void __glXSendLargeCommand(struct glx_context *, const GLvoid *, GLint,
                                  const GLvoid *, GLint);

/* Initialize the GLX extension for dpy */
extern struct glx_display *__glXInitialize(Display *);

extern void __glXPreferEGL(int state);

/************************************************************************/

extern int __glXDebug;

/* This is per-thread storage in an MT environment */

extern void __glXSetCurrentContext(struct glx_context * c);

# if defined( GLX_USE_TLS )

extern __thread void *__glX_tls_Context
   __attribute__ ((tls_model("initial-exec")));

#  define __glXGetCurrentContext() __glX_tls_Context

# else

extern struct glx_context *__glXGetCurrentContext(void);

# endif /* defined( GLX_USE_TLS ) */

extern void __glXSetCurrentContextNull(void);


/*
** Global lock for all threads in this address space using the GLX
** extension
*/
extern pthread_mutex_t __glXmutex;
#define __glXLock()    pthread_mutex_lock(&__glXmutex)
#define __glXUnlock()  pthread_mutex_unlock(&__glXmutex)

/*
** Setup for a command.  Initialize the extension for dpy if necessary.
*/
extern CARD8 __glXSetupForCommand(Display * dpy);

/************************************************************************/

/*
** Data conversion and packing support.
*/

extern const GLuint __glXDefaultPixelStore[9];

/* Send an image to the server using RenderLarge. */
extern void __glXSendLargeImage(struct glx_context * gc, GLint compsize, GLint dim,
                                GLint width, GLint height, GLint depth,
                                GLenum format, GLenum type,
                                const GLvoid * src, GLubyte * pc,
                                GLubyte * modes);

/* Return the size, in bytes, of some pixel data */
extern GLint __glImageSize(GLint, GLint, GLint, GLenum, GLenum, GLenum);

/* Return the number of elements per group of a specified format*/
extern GLint __glElementsPerGroup(GLenum format, GLenum type);

/* Return the number of bytes per element, based on the element type (other
** than GL_BITMAP).
*/
extern GLint __glBytesPerElement(GLenum type);

/*
** Fill the transport buffer with the data from the users buffer,
** applying some of the pixel store modes (unpack modes) to the data
** first.  As a side effect of this call, the "modes" field is
** updated to contain the modes needed by the server to decode the
** sent data.
*/
extern void __glFillImage(struct glx_context *, GLint, GLint, GLint, GLint, GLenum,
                          GLenum, const GLvoid *, GLubyte *, GLubyte *);

/* Copy map data with a stride into a packed buffer */
extern void __glFillMap1f(GLint, GLint, GLint, const GLfloat *, GLubyte *);
extern void __glFillMap1d(GLint, GLint, GLint, const GLdouble *, GLubyte *);
extern void __glFillMap2f(GLint, GLint, GLint, GLint, GLint,
                          const GLfloat *, GLfloat *);
extern void __glFillMap2d(GLint, GLint, GLint, GLint, GLint,
                          const GLdouble *, GLdouble *);

/*
** Empty an image out of the reply buffer into the clients memory applying
** the pack modes to pack back into the clients requested format.
*/
extern void __glEmptyImage(struct glx_context *, GLint, GLint, GLint, GLint, GLenum,
                           GLenum, const GLubyte *, GLvoid *);


/*
** Allocate and Initialize Vertex Array client state, and free.
*/
extern void __glXInitVertexArrayState(struct glx_context *);
extern void __glXFreeVertexArrayState(struct glx_context *);

/*
** Inform the Server of the major and minor numbers and of the client
** libraries extension string.
*/
extern void __glXClientInfo(Display * dpy, int opcode);

_X_HIDDEN void
__glX_send_client_info(struct glx_display *glx_dpy);

/************************************************************************/

/*
** Declarations that should be in Xlib
*/
#ifdef __GL_USE_OUR_PROTOTYPES
extern void _XFlush(Display *);
extern Status _XReply(Display *, xReply *, int, Bool);
extern void _XRead(Display *, void *, long);
extern void _XSend(Display *, const void *, long);
#endif


extern void __glXInitializeVisualConfigFromTags(struct glx_config * config,
                                                int count, const INT32 * bp,
                                                Bool tagged_only,
                                                Bool fbconfig_style_tags);

extern char *__glXQueryServerString(Display * dpy, int opcode,
                                    CARD32 screen, CARD32 name);
extern char *__glXGetString(Display * dpy, int opcode,
                            CARD32 screen, CARD32 name);

extern const char __glXGLClientVersion[];
extern const char __glXGLClientExtensions[];

/* Get the unadjusted system time */
extern int __glXGetUST(int64_t * ust);

extern GLboolean __glXGetMscRateOML(Display * dpy, GLXDrawable drawable,
                                    int32_t * numerator,
                                    int32_t * denominator);

#if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
extern GLboolean
__glxGetMscRate(struct glx_screen *psc,
		int32_t * numerator, int32_t * denominator);

/* So that dri2.c:DRI2WireToEvent() can access
 * glx_info->codes->first_event */
XExtDisplayInfo *__glXFindDisplay (Display *dpy);

extern void
GarbageCollectDRIDrawables(struct glx_screen *psc);

extern __GLXDRIdrawable *
GetGLXDRIDrawable(Display *dpy, GLXDrawable drawable);
#endif

extern struct glx_screen *GetGLXScreenConfigs(Display * dpy, int scrn);

#ifdef GLX_USE_APPLEGL
extern struct glx_screen *
applegl_create_screen(int screen, struct glx_display * priv);

extern struct glx_context *
applegl_create_context(struct glx_screen *psc,
			struct glx_config *mode,
			struct glx_context *shareList, int renderType);

extern int
applegl_create_display(struct glx_display *display);
#endif

extern Bool validate_renderType_against_config(const struct glx_config *config,
                                               int renderType);


extern struct glx_drawable *GetGLXDrawable(Display *dpy, GLXDrawable drawable);
extern int InitGLXDrawable(Display *dpy, struct glx_drawable *glxDraw,
			   XID xDrawable, GLXDrawable drawable);
extern void DestroyGLXDrawable(Display *dpy, GLXDrawable drawable);

extern struct glx_context dummyContext;

extern struct glx_screen *
indirect_create_screen(int screen, struct glx_display * priv);
extern struct glx_context *
indirect_create_context(struct glx_screen *psc,
			struct glx_config *mode,
			struct glx_context *shareList, int renderType);
extern struct glx_context *
indirect_create_context_attribs(struct glx_screen *base,
                                struct glx_config *config_base,
                                struct glx_context *shareList,
                                unsigned num_attribs,
                                const uint32_t *attribs,
                                unsigned *error);

#ifdef __cplusplus
}
#endif

#endif /* !__GLX_client_h__ */