src/glx/x11/glxclient.h

   1 /*
   2 ** License Applicability. Except to the extent portions of this file are
   3 ** made subject to an alternative license as permitted in the SGI Free
   4 ** Software License B, Version 1.1 (the "License"), the contents of this
   5 ** file are subject only to the provisions of the License. You may not use
   6 ** this file except in compliance with the License. You may obtain a copy
   7 ** of the License at Silicon Graphics, Inc., attn: Legal Services, 1600
   8 ** Amphitheatre Parkway, Mountain View, CA 94043-1351, or at:
   9 **
  10 ** http://oss.sgi.com/projects/FreeB
  11 **
  12 ** Note that, as provided in the License, the Software is distributed on an
  13 ** "AS IS" basis, with ALL EXPRESS AND IMPLIED WARRANTIES AND CONDITIONS
  14 ** DISCLAIMED, INCLUDING, WITHOUT LIMITATION, ANY IMPLIED WARRANTIES AND
  15 ** CONDITIONS OF MERCHANTABILITY, SATISFACTORY QUALITY, FITNESS FOR A
  16 ** PARTICULAR PURPOSE, AND NON-INFRINGEMENT.
  17 **
  18 ** Original Code. The Original Code is: OpenGL Sample Implementation,
  19 ** Version 1.2.1, released January 26, 2000, developed by Silicon Graphics,
  20 ** Inc. The Original Code is Copyright (c) 1991-2000 Silicon Graphics, Inc.
  21 ** Copyright in any portions created by third parties is as indicated
  22 ** elsewhere herein. All Rights Reserved.
  23 **
  24 ** Additional Notice Provisions: The application programming interfaces
  25 ** established by SGI in conjunction with the Original Code are The
  26 ** OpenGL(R) Graphics System: A Specification (Version 1.2.1), released
  27 ** April 1, 1999; The OpenGL(R) Graphics System Utility Library (Version
  28 ** 1.3), released November 4, 1998; and OpenGL(R) Graphics with the X
  29 ** Window System(R) (Version 1.3), released October 19, 1998. This software
  30 ** was created using the OpenGL(R) version 1.2.1 Sample Implementation
  31 ** published by SGI, but has not been independently verified as being
  32 ** compliant with the OpenGL(R) version 1.2.1 Specification.
  33 */
  34 /* $XFree86: xc/lib/GL/glx/glxclient.h,v 1.21 2004/02/09 23:46:31 alanh Exp $ */
  35
  36 /**
  37  * \file glxclient.h
  38  * Direct rendering support added by Precision Insight, Inc.
  39  *
  40  * \author Kevin E. Martin <kevin@precisioninsight.com>
  41  */
  42
  43 #ifndef _GLX_client_h_
  44 #define _GLX_client_h_
  45 #define NEED_REPLIES
  46 #define NEED_EVENTS
  47 #include <X11/Xproto.h>
  48 #include <X11/Xlibint.h>
  49 #define GLX_GLXEXT_PROTOTYPES
  50 #include <GL/glx.h>
  51 #include <GL/glxext.h>
  52 #include <string.h>
  53 #include <stdlib.h>
  54 #include <stdio.h>
  55 #ifdef WIN32
  56 #include <stdint.h>
  57 #endif
  58 #include "GL/glxint.h"
  59 #include "GL/glxproto.h"
  60 #include "GL/internal/glcore.h"
  61 #include "glapitable.h"
  62 #include "glxextensions.h"
  63 #include "glxhash.h"
  64 #if defined( USE_XTHREADS )
  65 # include <X11/Xthreads.h>
  66 #elif defined( PTHREADS )
  67 # include <pthread.h>
  68 #endif
  69
  70 #define GLX_MAJOR_VERSION       1       /* current version numbers */
  71 #define GLX_MINOR_VERSION       4
  72
  73 #define __GLX_MAX_TEXTURE_UNITS 32
  74
  75 typedef struct __GLXscreenConfigsRec __GLXscreenConfigs;
  76 typedef struct __GLXcontextRec __GLXcontext;
  77 typedef struct __GLXdrawableRec __GLXdrawable;
  78 typedef struct __GLXdisplayPrivateRec __GLXdisplayPrivate;
  79 typedef struct _glapi_table __GLapi;
  80
  81 /************************************************************************/
  82
  83 #ifdef GLX_DIRECT_RENDERING
  84
  85 #define containerOf(ptr, type, member)                  \
  86     (type *)( (char *)ptr - offsetof(type,member) )
  87
  88 #include <GL/internal/dri_interface.h>
  89
  90
  91 /**
  92  * Display dependent methods.  This structure is initialized during the
  93  * \c driCreateDisplay call.
  94  */
  95 struct __DRIdisplayRec {
  96     /**
  97      * Method to destroy the private DRI display data.
  98      */
  99     void (*destroyDisplay)(Display *dpy, void *displayPrivate);
 100
 101     /**
 102      * Opaque pointer to private per display direct rendering data.
 103      * \c NULL if direct rendering is not supported on this display.
 104      */
 105     struct __DRIdisplayPrivateRec *private;
 106
 107     /**
 108      * Array of pointers to methods to create and initialize the private DRI
 109      * screen data.
 110      */
 111     PFNCREATENEWSCREENFUNC * createNewScreen;
 112 };
 113
 114
 115 /*
 116 ** We keep a linked list of these structures, one per DRI device driver.
 117 */
 118 struct __DRIdriverRec {
 119    const char *name;
 120    void *handle;
 121    PFNCREATENEWSCREENFUNC createNewScreenFunc;
 122    struct __DRIdriverRec *next;
 123 };
 124
 125 /*
 126 ** Function to create and DRI display data and initialize the display
 127 ** dependent methods.
 128 */
 129 extern void *driCreateDisplay(Display *dpy, __DRIdisplay *pdisp);
 130
 131 extern  __DRIdriver *driGetDriver(Display *dpy, int scrNum);
 132
 133 extern void DRI_glXUseXFont( Font font, int first, int count, int listbase );
 134
 135 /*
 136 ** Functions to obtain driver configuration information from a direct
 137 ** rendering client application
 138 */
 139 extern const char *glXGetScreenDriver (Display *dpy, int scrNum);
 140
 141 extern const char *glXGetDriverConfig (const char *driverName);
 142
 143 extern Bool __glXWindowExists(Display *dpy, GLXDrawable draw);
 144
 145 #endif
 146
 147 /************************************************************************/
 148
 149 #define __GL_CLIENT_ATTRIB_STACK_DEPTH 16
 150
 151 typedef struct __GLXpixelStoreModeRec {
 152     GLboolean swapEndian;
 153     GLboolean lsbFirst;
 154     GLuint rowLength;
 155     GLuint imageHeight;
 156     GLuint imageDepth;
 157     GLuint skipRows;
 158     GLuint skipPixels;
 159     GLuint skipImages;
 160     GLuint alignment;
 161 } __GLXpixelStoreMode;
 162
 163
 164 typedef struct __GLXattributeRec {
 165     GLuint mask;
 166
 167     /**
 168      * Pixel storage state.  Most of the pixel store mode state is kept
 169      * here and used by the client code to manage the packing and
 170      * unpacking of data sent to/received from the server.
 171      */
 172     __GLXpixelStoreMode storePack, storeUnpack;
 173
 174     /**
 175      * Is EXT_vertex_array / GL 1.1 DrawArrays protocol specifically
 176      * disabled?
 177      */
 178     GLboolean NoDrawArraysProtocol;
 179
 180     /**
 181      * Vertex Array storage state.  The vertex array component
 182      * state is stored here and is used to manage the packing of
 183      * DrawArrays data sent to the server.
 184      */
 185     struct array_state_vector * array_state;
 186 } __GLXattribute;
 187
 188 typedef struct __GLXattributeMachineRec {
 189         __GLXattribute *stack[__GL_CLIENT_ATTRIB_STACK_DEPTH];
 190         __GLXattribute **stackPointer;
 191 } __GLXattributeMachine;
 192
 193 /**
 194  * GLX state that needs to be kept on the client.  One of these records
 195  * exist for each context that has been made current by this client.
 196  */
 197 struct __GLXcontextRec {
 198     /**
 199      * \name Drawing command buffer.
 200      *
 201      * Drawing commands are packed into this buffer before being sent as a
 202      * single GLX protocol request.  The buffer is sent when it overflows or
 203      * is flushed by \c __glXFlushRenderBuffer.  \c pc is the next location
 204      * in the buffer to be filled.  \c limit is described above in the buffer
 205      * slop discussion.
 206      *
 207      * Commands that require large amounts of data to be transfered will
 208      * also use this buffer to hold a header that describes the large
 209      * command.
 210      *
 211      * These must be the first 6 fields since they are static initialized
 212      * in the dummy context in glxext.c
 213      */
 214     /*@{*/
 215     GLubyte *buf;
 216     GLubyte *pc;
 217     GLubyte *limit;
 218     GLubyte *bufEnd;
 219     GLint bufSize;
 220     /*@}*/
 221
 222     /**
 223      * The XID of this rendering context.  When the context is created a
 224      * new XID is allocated.  This is set to None when the context is
 225      * destroyed but is still current to some thread. In this case the
 226      * context will be freed on next MakeCurrent.
 227      */
 228     XID xid;
 229
 230     /**
 231      * The XID of the \c shareList context.
 232      */
 233     XID share_xid;
 234
 235     /**
 236      * Visual id.
 237      *
 238      * \deprecated
 239      * This filed has been largely been replaced by the \c mode field, but
 240      * the work is not quite done.
 241      */
 242     VisualID vid;
 243
 244     /**
 245      * Screen number.
 246      */
 247     GLint screen;
 248     __GLXscreenConfigs *psc;
 249
 250     /**
 251      * \c GL_TRUE if the context was created with ImportContext, which
 252      * means the server-side context was created by another X client.
 253      */
 254     GLboolean imported;
 255
 256     /**
 257      * The context tag returned by MakeCurrent when this context is made
 258      * current. This tag is used to identify the context that a thread has
 259      * current so that proper server context management can be done.  It is
 260      * used for all context specific commands (i.e., \c Render, \c RenderLarge,
 261      * \c WaitX, \c WaitGL, \c UseXFont, and \c MakeCurrent (for the old
 262      * context)).
 263      */
 264     GLXContextTag currentContextTag;
 265
 266     /**
 267      * \name Rendering mode
 268      *
 269      * The rendering mode is kept on the client as well as the server.
 270      * When \c glRenderMode is called, the buffer associated with the
 271      * previous rendering mode (feedback or select) is filled.
 272      */
 273     /*@{*/
 274     GLenum renderMode;
 275     GLfloat *feedbackBuf;
 276     GLuint *selectBuf;
 277     /*@}*/
 278
 279     /**
 280      * This is \c GL_TRUE if the pixel unpack modes are such that an image
 281      * can be unpacked from the clients memory by just copying.  It may
 282      * still be true that the server will have to do some work.  This
 283      * just promises that a straight copy will fetch the correct bytes.
 284      */
 285     GLboolean fastImageUnpack;
 286
 287     /**
 288      * Fill newImage with the unpacked form of \c oldImage getting it
 289      * ready for transport to the server.
 290      */
 291     void (*fillImage)(__GLXcontext*, GLint, GLint, GLint, GLint, GLenum,
 292                       GLenum, const GLvoid*, GLubyte*, GLubyte*);
 293
 294     /**
 295      * Client side attribs.
 296      */
 297     __GLXattributeMachine attributes;
 298
 299     /**
 300      * Client side error code.  This is set when client side gl API
 301      * routines need to set an error because of a bad enumerant or
 302      * running out of memory, etc.
 303      */
 304     GLenum error;
 305
 306     /**
 307      * Whether this context does direct rendering.
 308      */
 309     Bool isDirect;
 310
 311     /**
 312      * \c dpy of current display for this context.  Will be \c NULL if not
 313      * current to any display, or if this is the "dummy context".
 314      */
 315     Display *currentDpy;
 316
 317     /**
 318      * The current drawable for this context.  Will be None if this
 319      * context is not current to any drawable.  currentReadable is below.
 320      */
 321     GLXDrawable currentDrawable;
 322
 323     /**
 324      * \name GL Constant Strings
 325      *
 326      * Constant strings that describe the server implementation
 327      * These pertain to GL attributes, not to be confused with
 328      * GLX versioning attributes.
 329      */
 330     /*@{*/
 331     GLubyte *vendor;
 332     GLubyte *renderer;
 333     GLubyte *version;
 334     GLubyte *extensions;
 335     /*@}*/
 336
 337     /**
 338      * Record the dpy this context was created on for later freeing
 339      */
 340     Display *createDpy;
 341
 342     /**
 343      * Maximum small render command size.  This is the smaller of 64k and
 344      * the size of the above buffer.
 345      */
 346     GLint maxSmallRenderCommandSize;
 347
 348     /**
 349      * Major opcode for the extension.  Copied here so a lookup isn't
 350      * needed.
 351      */
 352     GLint majorOpcode;
 353
 354 #ifdef GLX_DIRECT_RENDERING
 355     /**
 356      * Per context direct rendering interface functions and data.
 357      */
 358     __DRIcontext driContext;
 359
 360     /**
 361      * Pointer to the mode used to create this context.
 362      */
 363     const __GLcontextModes * mode;
 364
 365     /**
 366      * XID for the server side drm_context_t
 367      */
 368     XID hwContextID;
 369 #endif
 370
 371     /**
 372      * \c GLXFBConfigID used to create this context.  May be \c None.  This
 373      * field has been replaced by the \c mode field.
 374      *
 375      * \since Internal API version 20030317.
 376      *
 377      * \deprecated
 378      * This filed has been largely been replaced by the \c mode field, but
 379      * the work is not quite done.
 380      */
 381     GLXFBConfigID  fbconfigID;
 382
 383     /**
 384      * The current read-drawable for this context.  Will be None if this
 385      * context is not current to any drawable.
 386      *
 387      * \since Internal API version 20030606.
 388      */
 389     GLXDrawable currentReadable;
 390
 391    /**
 392     * Pointer to client-state data that is private to libGL.  This is only
 393     * used for indirect rendering contexts.
 394     *
 395     * No internal API version change was made for this change.  Client-side
 396     * drivers should NEVER use this data or even care that it exists.
 397     */
 398    void * client_state_private;
 399
 400    /**
 401     * Stored value for \c glXQueryContext attribute \c GLX_RENDER_TYPE.
 402     */
 403    int renderType;
 404
 405    /**
 406     * \name Raw server GL version
 407     *
 408     * True core GL version supported by the server.  This is the raw value
 409     * returned by the server, and it may not reflect what is actually
 410     * supported (or reported) by the client-side library.
 411     */
 412     /*@{*/
 413    int server_major;        /**< Major version number. */
 414    int server_minor;        /**< Minor version number. */
 415     /*@}*/
 416
 417     char gl_extension_bits[ __GL_EXT_BYTES ];
 418 };
 419
 420 #define __glXSetError(gc,code) \
 421     if (!(gc)->error) {        \
 422         (gc)->error = code;    \
 423     }
 424
 425 extern void __glFreeAttributeState(__GLXcontext *);
 426
 427 /************************************************************************/
 428
 429 /**
 430  * The size of the largest drawing command known to the implementation
 431  * that will use the GLXRender GLX command.  In this case it is
 432  * \c glPolygonStipple.
 433  */
 434 #define __GLX_MAX_SMALL_RENDER_CMD_SIZE 156
 435
 436 /**
 437  * To keep the implementation fast, the code uses a "limit" pointer
 438  * to determine when the drawing command buffer is too full to hold
 439  * another fixed size command.  This constant defines the amount of
 440  * space that must always be available in the drawing command buffer
 441  * at all times for the implementation to work.  It is important that
 442  * the number be just large enough, but not so large as to reduce the
 443  * efficacy of the buffer.  The "+32" is just to keep the code working
 444  * in case somebody counts wrong.
 445  */
 446 #define __GLX_BUFFER_LIMIT_SIZE (__GLX_MAX_SMALL_RENDER_CMD_SIZE + 32)
 447
 448 /**
 449  * This implementation uses a smaller threshold for switching
 450  * to the RenderLarge protocol than the protcol requires so that
 451  * large copies don't occur.
 452  */
 453 #define __GLX_RENDER_CMD_SIZE_LIMIT     4096
 454
 455 /**
 456  * One of these records exists per screen of the display.  It contains
 457  * a pointer to the config data for that screen (if the screen supports GL).
 458  */
 459 struct __GLXscreenConfigsRec {
 460     /**
 461      * GLX extension string reported by the X-server.
 462      */
 463     const char *serverGLXexts;
 464
 465     /**
 466      * GLX extension string to be reported to applications.  This is the
 467      * set of extensions that the application can actually use.
 468      */
 469     char *effectiveGLXexts;
 470
 471 #ifdef GLX_DIRECT_RENDERING
 472     /**
 473      * Per screen direct rendering interface functions and data.
 474      */
 475     __DRIscreen driScreen;
 476     __glxHashTable *drawHash;
 477     Display *dpy;
 478     int scr;
 479
 480 #ifdef __DRI_COPY_SUB_BUFFER
 481     __DRIcopySubBufferExtension *copySubBuffer;
 482 #endif
 483
 484 #ifdef __DRI_SWAP_CONTROL
 485     __DRIswapControlExtension *swapControl;
 486 #endif
 487
 488 #ifdef __DRI_ALLOCATE
 489     __DRIallocateExtension *allocate;
 490 #endif
 491
 492 #ifdef __DRI_FRAME_TRACKING
 493     __DRIframeTrackingExtension *frameTracking;
 494 #endif
 495
 496 #ifdef __DRI_MEDIA_STREAM_COUNTER
 497     __DRImediaStreamCounterExtension *msc;
 498 #endif
 499
 500 #endif
 501
 502     /**
 503      * Linked list of configurations for this screen.
 504      */
 505     __GLcontextModes *configs;
 506
 507     /**
 508      * Per-screen dynamic GLX extension tracking.  The \c direct_support
 509      * field only contains enough bits for 64 extensions.  Should libGL
 510      * ever need to track more than 64 GLX extensions, we can safely grow
 511      * this field.  The \c __GLXscreenConfigs structure is not used outside
 512      * libGL.
 513      */
 514     /*@{*/
 515     unsigned char direct_support[8];
 516     GLboolean ext_list_first_time;
 517     /*@}*/
 518
 519 };
 520
 521 /**
 522  * Per display private data.  One of these records exists for each display
 523  * that is using the OpenGL (GLX) extension.
 524  */
 525 struct __GLXdisplayPrivateRec {
 526     /**
 527      * Back pointer to the display
 528      */
 529     Display *dpy;
 530
 531     /**
 532      * The \c majorOpcode is common to all connections to the same server.
 533      * It is also copied into the context structure.
 534      */
 535     int majorOpcode;
 536
 537     /**
 538      * \name Server Version
 539      *
 540      * Major and minor version returned by the server during initialization.
 541      */
 542     /*@{*/
 543     int majorVersion, minorVersion;
 544     /*@}*/
 545
 546     /**
 547      * \name Storage for the servers GLX vendor and versions strings.
 548      *
 549      * These are the same for all screens on this display. These fields will
 550      * be filled in on demand.
 551      */
 552     /*@{*/
 553     const char *serverGLXvendor;
 554     const char *serverGLXversion;
 555     /*@}*/
 556
 557     /**
 558      * Configurations of visuals for all screens on this display.
 559      * Also, per screen data which now includes the server \c GLX_EXTENSION
 560      * string.
 561      */
 562     __GLXscreenConfigs *screenConfigs;
 563
 564 #ifdef GLX_DIRECT_RENDERING
 565     /**
 566      * Per display direct rendering interface functions and data.
 567      */
 568     __DRIdisplay driDisplay;
 569 #endif
 570 };
 571
 572 #ifdef GLX_DIRECT_RENDERING
 573
 574 struct __GLXdrawableRec {
 575     XID drawable;
 576     __GLXscreenConfigs *psc;
 577     __DRIdrawable driDrawable;
 578 };
 579
 580 #endif
 581
 582
 583
 584 void __glXFreeContext(__GLXcontext*);
 585
 586 extern GLubyte *__glXFlushRenderBuffer(__GLXcontext*, GLubyte*);
 587
 588 extern void __glXSendLargeChunk(__GLXcontext *gc, GLint requestNumber,
 589                                 GLint totalRequests,
 590                                 const GLvoid * data, GLint dataLen);
 591
 592 extern void __glXSendLargeCommand(__GLXcontext *, const GLvoid *, GLint,
 593                                   const GLvoid *, GLint);
 594
 595 /* Initialize the GLX extension for dpy */
 596 extern __GLXdisplayPrivate *__glXInitialize(Display*);
 597
 598 /************************************************************************/
 599
 600 extern int __glXDebug;
 601
 602 /* This is per-thread storage in an MT environment */
 603 #if defined( USE_XTHREADS ) || defined( PTHREADS )
 604
 605 extern void __glXSetCurrentContext(__GLXcontext *c);
 606
 607 # if defined( GLX_USE_TLS )
 608
 609 extern __thread void * __glX_tls_Context
 610     __attribute__((tls_model("initial-exec")));
 611
 612 #  define __glXGetCurrentContext()      __glX_tls_Context
 613
 614 # else
 615
 616 extern __GLXcontext *__glXGetCurrentContext(void);
 617
 618 # endif /* defined( GLX_USE_TLS ) */
 619
 620 #else
 621
 622 extern __GLXcontext *__glXcurrentContext;
 623 #define __glXGetCurrentContext()        __glXcurrentContext
 624 #define __glXSetCurrentContext(gc)      __glXcurrentContext = gc
 625
 626 #endif /* defined( USE_XTHREADS ) || defined( PTHREADS ) */
 627
 628
 629 /*
 630 ** Global lock for all threads in this address space using the GLX
 631 ** extension
 632 */
 633 #if defined( USE_XTHREADS )
 634 extern xmutex_rec __glXmutex;
 635 #define __glXLock()    xmutex_lock(&__glXmutex)
 636 #define __glXUnlock()  xmutex_unlock(&__glXmutex)
 637 #elif defined( PTHREADS )
 638 extern pthread_mutex_t __glXmutex;
 639 #define __glXLock()    pthread_mutex_lock(&__glXmutex)
 640 #define __glXUnlock()  pthread_mutex_unlock(&__glXmutex)
 641 #else
 642 #define __glXLock()
 643 #define __glXUnlock()
 644 #endif
 645
 646 /*
 647 ** Setup for a command.  Initialize the extension for dpy if necessary.
 648 */
 649 extern CARD8 __glXSetupForCommand(Display *dpy);
 650
 651 /************************************************************************/
 652
 653 /*
 654 ** Data conversion and packing support.
 655 */
 656
 657 extern const GLuint __glXDefaultPixelStore[9];
 658
 659 /* Send an image to the server using RenderLarge. */
 660 extern void __glXSendLargeImage(__GLXcontext *gc, GLint compsize, GLint dim,
 661     GLint width, GLint height, GLint depth, GLenum format, GLenum type,
 662     const GLvoid *src, GLubyte *pc, GLubyte *modes);
 663
 664 /* Return the size, in bytes, of some pixel data */
 665 extern GLint __glImageSize(GLint, GLint, GLint, GLenum, GLenum, GLenum);
 666
 667 /* Return the number of elements per group of a specified format*/
 668 extern GLint __glElementsPerGroup(GLenum format, GLenum type);
 669
 670 /* Return the number of bytes per element, based on the element type (other
 671 ** than GL_BITMAP).
 672 */
 673 extern GLint __glBytesPerElement(GLenum type);
 674
 675 /*
 676 ** Fill the transport buffer with the data from the users buffer,
 677 ** applying some of the pixel store modes (unpack modes) to the data
 678 ** first.  As a side effect of this call, the "modes" field is
 679 ** updated to contain the modes needed by the server to decode the
 680 ** sent data.
 681 */
 682 extern void __glFillImage(__GLXcontext*, GLint, GLint, GLint, GLint, GLenum,
 683                           GLenum, const GLvoid*, GLubyte*, GLubyte*);
 684
 685 /* Copy map data with a stride into a packed buffer */
 686 extern void __glFillMap1f(GLint, GLint, GLint, const GLfloat *, GLubyte *);
 687 extern void __glFillMap1d(GLint, GLint, GLint, const GLdouble *, GLubyte *);
 688 extern void __glFillMap2f(GLint, GLint, GLint, GLint, GLint,
 689                           const GLfloat *, GLfloat *);
 690 extern void __glFillMap2d(GLint, GLint, GLint, GLint, GLint,
 691                           const GLdouble *, GLdouble *);
 692
 693 /*
 694 ** Empty an image out of the reply buffer into the clients memory applying
 695 ** the pack modes to pack back into the clients requested format.
 696 */
 697 extern void __glEmptyImage(__GLXcontext*, GLint, GLint, GLint, GLint, GLenum,
 698                            GLenum, const GLubyte *, GLvoid *);
 699
 700
 701 /*
 702 ** Allocate and Initialize Vertex Array client state
 703 */
 704 extern void __glXInitVertexArrayState(__GLXcontext*);
 705
 706 /*
 707 ** Inform the Server of the major and minor numbers and of the client
 708 ** libraries extension string.
 709 */
 710 extern void __glXClientInfo (  Display *dpy, int opcode );
 711
 712 /************************************************************************/
 713
 714 /*
 715 ** Declarations that should be in Xlib
 716 */
 717 #ifdef __GL_USE_OUR_PROTOTYPES
 718 extern void _XFlush(Display*);
 719 extern Status _XReply(Display*, xReply*, int, Bool);
 720 extern void _XRead(Display*, void*, long);
 721 extern void _XSend(Display*, const void*, long);
 722 #endif
 723
 724
 725 extern void __glXInitializeVisualConfigFromTags( __GLcontextModes *config,
 726     int count, const INT32 *bp, Bool tagged_only, Bool fbconfig_style_tags );
 727
 728 extern char * __glXGetStringFromServer( Display * dpy, int opcode,
 729     CARD32 glxCode, CARD32 for_whom, CARD32 name );
 730
 731 extern char *__glXstrdup(const char *str);
 732
 733
 734 extern const char __glXGLClientVersion[];
 735 extern const char __glXGLClientExtensions[];
 736
 737 /* Determine the internal API version */
 738 extern int __glXGetInternalVersion(void);
 739
 740 /* Get the unadjusted system time */
 741 extern int __glXGetUST( int64_t * ust );
 742
 743 extern GLboolean __glXGetMscRateOML(__DRIdrawable *draw,
 744                                     int32_t * numerator, int32_t * denominator);
 745
 746 #endif /* !__GLX_client_h__ */