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    const char *libpath;
 121    void *handle;
 122    PFNCREATENEWSCREENFUNC createNewScreenFunc;
 123    struct __DRIdriverRec *next;
 124 };
 125
 126 /*
 127 ** Function to create and DRI display data and initialize the display
 128 ** dependent methods.
 129 */
 130 extern void *driCreateDisplay(Display *dpy, __DRIdisplay *pdisp);
 131 extern void driCreateScreen(__GLXscreenConfigs *psc, int screen,
 132                             __GLXdisplayPrivate *priv);
 133
 134 extern  __DRIdriver *driGetDriver(Display *dpy, int scrNum);
 135
 136 extern void DRI_glXUseXFont( Font font, int first, int count, int listbase );
 137
 138 /*
 139 ** Functions to obtain driver configuration information from a direct
 140 ** rendering client application
 141 */
 142 extern const char *glXGetScreenDriver (Display *dpy, int scrNum);
 143
 144 extern const char *glXGetDriverConfig (const char *driverName);
 145
 146 extern Bool __glXWindowExists(Display *dpy, GLXDrawable draw);
 147
 148 #endif
 149
 150 /************************************************************************/
 151
 152 #define __GL_CLIENT_ATTRIB_STACK_DEPTH 16
 153
 154 typedef struct __GLXpixelStoreModeRec {
 155     GLboolean swapEndian;
 156     GLboolean lsbFirst;
 157     GLuint rowLength;
 158     GLuint imageHeight;
 159     GLuint imageDepth;
 160     GLuint skipRows;
 161     GLuint skipPixels;
 162     GLuint skipImages;
 163     GLuint alignment;
 164 } __GLXpixelStoreMode;
 165
 166
 167 typedef struct __GLXattributeRec {
 168     GLuint mask;
 169
 170     /**
 171      * Pixel storage state.  Most of the pixel store mode state is kept
 172      * here and used by the client code to manage the packing and
 173      * unpacking of data sent to/received from the server.
 174      */
 175     __GLXpixelStoreMode storePack, storeUnpack;
 176
 177     /**
 178      * Is EXT_vertex_array / GL 1.1 DrawArrays protocol specifically
 179      * disabled?
 180      */
 181     GLboolean NoDrawArraysProtocol;
 182
 183     /**
 184      * Vertex Array storage state.  The vertex array component
 185      * state is stored here and is used to manage the packing of
 186      * DrawArrays data sent to the server.
 187      */
 188     struct array_state_vector * array_state;
 189 } __GLXattribute;
 190
 191 typedef struct __GLXattributeMachineRec {
 192         __GLXattribute *stack[__GL_CLIENT_ATTRIB_STACK_DEPTH];
 193         __GLXattribute **stackPointer;
 194 } __GLXattributeMachine;
 195
 196 /**
 197  * GLX state that needs to be kept on the client.  One of these records
 198  * exist for each context that has been made current by this client.
 199  */
 200 struct __GLXcontextRec {
 201     /**
 202      * \name Drawing command buffer.
 203      *
 204      * Drawing commands are packed into this buffer before being sent as a
 205      * single GLX protocol request.  The buffer is sent when it overflows or
 206      * is flushed by \c __glXFlushRenderBuffer.  \c pc is the next location
 207      * in the buffer to be filled.  \c limit is described above in the buffer
 208      * slop discussion.
 209      *
 210      * Commands that require large amounts of data to be transfered will
 211      * also use this buffer to hold a header that describes the large
 212      * command.
 213      *
 214      * These must be the first 6 fields since they are static initialized
 215      * in the dummy context in glxext.c
 216      */
 217     /*@{*/
 218     GLubyte *buf;
 219     GLubyte *pc;
 220     GLubyte *limit;
 221     GLubyte *bufEnd;
 222     GLint bufSize;
 223     /*@}*/
 224
 225     /**
 226      * The XID of this rendering context.  When the context is created a
 227      * new XID is allocated.  This is set to None when the context is
 228      * destroyed but is still current to some thread. In this case the
 229      * context will be freed on next MakeCurrent.
 230      */
 231     XID xid;
 232
 233     /**
 234      * The XID of the \c shareList context.
 235      */
 236     XID share_xid;
 237
 238     /**
 239      * Screen number.
 240      */
 241     GLint screen;
 242     __GLXscreenConfigs *psc;
 243
 244     /**
 245      * \c GL_TRUE if the context was created with ImportContext, which
 246      * means the server-side context was created by another X client.
 247      */
 248     GLboolean imported;
 249
 250     /**
 251      * The context tag returned by MakeCurrent when this context is made
 252      * current. This tag is used to identify the context that a thread has
 253      * current so that proper server context management can be done.  It is
 254      * used for all context specific commands (i.e., \c Render, \c RenderLarge,
 255      * \c WaitX, \c WaitGL, \c UseXFont, and \c MakeCurrent (for the old
 256      * context)).
 257      */
 258     GLXContextTag currentContextTag;
 259
 260     /**
 261      * \name Rendering mode
 262      *
 263      * The rendering mode is kept on the client as well as the server.
 264      * When \c glRenderMode is called, the buffer associated with the
 265      * previous rendering mode (feedback or select) is filled.
 266      */
 267     /*@{*/
 268     GLenum renderMode;
 269     GLfloat *feedbackBuf;
 270     GLuint *selectBuf;
 271     /*@}*/
 272
 273     /**
 274      * This is \c GL_TRUE if the pixel unpack modes are such that an image
 275      * can be unpacked from the clients memory by just copying.  It may
 276      * still be true that the server will have to do some work.  This
 277      * just promises that a straight copy will fetch the correct bytes.
 278      */
 279     GLboolean fastImageUnpack;
 280
 281     /**
 282      * Fill newImage with the unpacked form of \c oldImage getting it
 283      * ready for transport to the server.
 284      */
 285     void (*fillImage)(__GLXcontext*, GLint, GLint, GLint, GLint, GLenum,
 286                       GLenum, const GLvoid*, GLubyte*, GLubyte*);
 287
 288     /**
 289      * Client side attribs.
 290      */
 291     __GLXattributeMachine attributes;
 292
 293     /**
 294      * Client side error code.  This is set when client side gl API
 295      * routines need to set an error because of a bad enumerant or
 296      * running out of memory, etc.
 297      */
 298     GLenum error;
 299
 300     /**
 301      * Whether this context does direct rendering.
 302      */
 303     Bool isDirect;
 304
 305     /**
 306      * \c dpy of current display for this context.  Will be \c NULL if not
 307      * current to any display, or if this is the "dummy context".
 308      */
 309     Display *currentDpy;
 310
 311     /**
 312      * The current drawable for this context.  Will be None if this
 313      * context is not current to any drawable.  currentReadable is below.
 314      */
 315     GLXDrawable currentDrawable;
 316
 317     /**
 318      * \name GL Constant Strings
 319      *
 320      * Constant strings that describe the server implementation
 321      * These pertain to GL attributes, not to be confused with
 322      * GLX versioning attributes.
 323      */
 324     /*@{*/
 325     GLubyte *vendor;
 326     GLubyte *renderer;
 327     GLubyte *version;
 328     GLubyte *extensions;
 329     /*@}*/
 330
 331     /**
 332      * Record the dpy this context was created on for later freeing
 333      */
 334     Display *createDpy;
 335
 336     /**
 337      * Maximum small render command size.  This is the smaller of 64k and
 338      * the size of the above buffer.
 339      */
 340     GLint maxSmallRenderCommandSize;
 341
 342     /**
 343      * Major opcode for the extension.  Copied here so a lookup isn't
 344      * needed.
 345      */
 346     GLint majorOpcode;
 347
 348     /**
 349      * Pointer to the mode used to create this context.
 350      */
 351     const __GLcontextModes * mode;
 352
 353 #ifdef GLX_DIRECT_RENDERING
 354     /**
 355      * Per context direct rendering interface functions and data.
 356      */
 357     __DRIcontext driContext;
 358
 359     /**
 360      * XID for the server side drm_context_t
 361      */
 362     XID hwContextID;
 363 #endif
 364
 365     /**
 366      * The current read-drawable for this context.  Will be None if this
 367      * context is not current to any drawable.
 368      *
 369      * \since Internal API version 20030606.
 370      */
 371     GLXDrawable currentReadable;
 372
 373    /**
 374     * Pointer to client-state data that is private to libGL.  This is only
 375     * used for indirect rendering contexts.
 376     *
 377     * No internal API version change was made for this change.  Client-side
 378     * drivers should NEVER use this data or even care that it exists.
 379     */
 380    void * client_state_private;
 381
 382    /**
 383     * Stored value for \c glXQueryContext attribute \c GLX_RENDER_TYPE.
 384     */
 385    int renderType;
 386
 387    /**
 388     * \name Raw server GL version
 389     *
 390     * True core GL version supported by the server.  This is the raw value
 391     * returned by the server, and it may not reflect what is actually
 392     * supported (or reported) by the client-side library.
 393     */
 394     /*@{*/
 395    int server_major;        /**< Major version number. */
 396    int server_minor;        /**< Minor version number. */
 397     /*@}*/
 398
 399     char gl_extension_bits[ __GL_EXT_BYTES ];
 400 };
 401
 402 #define __glXSetError(gc,code) \
 403     if (!(gc)->error) {        \
 404         (gc)->error = code;    \
 405     }
 406
 407 extern void __glFreeAttributeState(__GLXcontext *);
 408
 409 /************************************************************************/
 410
 411 /**
 412  * The size of the largest drawing command known to the implementation
 413  * that will use the GLXRender GLX command.  In this case it is
 414  * \c glPolygonStipple.
 415  */
 416 #define __GLX_MAX_SMALL_RENDER_CMD_SIZE 156
 417
 418 /**
 419  * To keep the implementation fast, the code uses a "limit" pointer
 420  * to determine when the drawing command buffer is too full to hold
 421  * another fixed size command.  This constant defines the amount of
 422  * space that must always be available in the drawing command buffer
 423  * at all times for the implementation to work.  It is important that
 424  * the number be just large enough, but not so large as to reduce the
 425  * efficacy of the buffer.  The "+32" is just to keep the code working
 426  * in case somebody counts wrong.
 427  */
 428 #define __GLX_BUFFER_LIMIT_SIZE (__GLX_MAX_SMALL_RENDER_CMD_SIZE + 32)
 429
 430 /**
 431  * This implementation uses a smaller threshold for switching
 432  * to the RenderLarge protocol than the protcol requires so that
 433  * large copies don't occur.
 434  */
 435 #define __GLX_RENDER_CMD_SIZE_LIMIT     4096
 436
 437 /**
 438  * One of these records exists per screen of the display.  It contains
 439  * a pointer to the config data for that screen (if the screen supports GL).
 440  */
 441 struct __GLXscreenConfigsRec {
 442     /**
 443      * GLX extension string reported by the X-server.
 444      */
 445     const char *serverGLXexts;
 446
 447     /**
 448      * GLX extension string to be reported to applications.  This is the
 449      * set of extensions that the application can actually use.
 450      */
 451     char *effectiveGLXexts;
 452
 453 #ifdef GLX_DIRECT_RENDERING
 454     /**
 455      * Per screen direct rendering interface functions and data.
 456      */
 457     __DRIscreen driScreen;
 458     __glxHashTable *drawHash;
 459     Display *dpy;
 460     int scr;
 461
 462 #ifdef __DRI_COPY_SUB_BUFFER
 463     __DRIcopySubBufferExtension *copySubBuffer;
 464 #endif
 465
 466 #ifdef __DRI_SWAP_CONTROL
 467     __DRIswapControlExtension *swapControl;
 468 #endif
 469
 470 #ifdef __DRI_ALLOCATE
 471     __DRIallocateExtension *allocate;
 472 #endif
 473
 474 #ifdef __DRI_FRAME_TRACKING
 475     __DRIframeTrackingExtension *frameTracking;
 476 #endif
 477
 478 #ifdef __DRI_MEDIA_STREAM_COUNTER
 479     __DRImediaStreamCounterExtension *msc;
 480 #endif
 481
 482 #endif
 483
 484     /**
 485      * Linked list of glx visuals and  fbconfigs for this screen.
 486      */
 487     __GLcontextModes *visuals, *configs;
 488
 489     /**
 490      * Per-screen dynamic GLX extension tracking.  The \c direct_support
 491      * field only contains enough bits for 64 extensions.  Should libGL
 492      * ever need to track more than 64 GLX extensions, we can safely grow
 493      * this field.  The \c __GLXscreenConfigs structure is not used outside
 494      * libGL.
 495      */
 496     /*@{*/
 497     unsigned char direct_support[8];
 498     GLboolean ext_list_first_time;
 499     /*@}*/
 500
 501 };
 502
 503 /**
 504  * Per display private data.  One of these records exists for each display
 505  * that is using the OpenGL (GLX) extension.
 506  */
 507 struct __GLXdisplayPrivateRec {
 508     /**
 509      * Back pointer to the display
 510      */
 511     Display *dpy;
 512
 513     /**
 514      * The \c majorOpcode is common to all connections to the same server.
 515      * It is also copied into the context structure.
 516      */
 517     int majorOpcode;
 518
 519     /**
 520      * \name Server Version
 521      *
 522      * Major and minor version returned by the server during initialization.
 523      */
 524     /*@{*/
 525     int majorVersion, minorVersion;
 526     /*@}*/
 527
 528     /**
 529      * \name Storage for the servers GLX vendor and versions strings.
 530      *
 531      * These are the same for all screens on this display. These fields will
 532      * be filled in on demand.
 533      */
 534     /*@{*/
 535     const char *serverGLXvendor;
 536     const char *serverGLXversion;
 537     /*@}*/
 538
 539     /**
 540      * Configurations of visuals for all screens on this display.
 541      * Also, per screen data which now includes the server \c GLX_EXTENSION
 542      * string.
 543      */
 544     __GLXscreenConfigs *screenConfigs;
 545
 546 #ifdef GLX_DIRECT_RENDERING
 547     /**
 548      * Per display direct rendering interface functions and data.
 549      */
 550     __DRIdisplay driDisplay;
 551 #endif
 552 };
 553
 554 #ifdef GLX_DIRECT_RENDERING
 555
 556 struct __GLXdrawableRec {
 557     XID drawable;
 558     __GLXscreenConfigs *psc;
 559     __DRIdrawable driDrawable;
 560 };
 561
 562 #endif
 563
 564
 565
 566 void __glXFreeContext(__GLXcontext*);
 567
 568 extern GLubyte *__glXFlushRenderBuffer(__GLXcontext*, GLubyte*);
 569
 570 extern void __glXSendLargeChunk(__GLXcontext *gc, GLint requestNumber,
 571                                 GLint totalRequests,
 572                                 const GLvoid * data, GLint dataLen);
 573
 574 extern void __glXSendLargeCommand(__GLXcontext *, const GLvoid *, GLint,
 575                                   const GLvoid *, GLint);
 576
 577 /* Initialize the GLX extension for dpy */
 578 extern __GLXdisplayPrivate *__glXInitialize(Display*);
 579
 580 /************************************************************************/
 581
 582 extern int __glXDebug;
 583
 584 /* This is per-thread storage in an MT environment */
 585 #if defined( USE_XTHREADS ) || defined( PTHREADS )
 586
 587 extern void __glXSetCurrentContext(__GLXcontext *c);
 588
 589 # if defined( GLX_USE_TLS )
 590
 591 extern __thread void * __glX_tls_Context
 592     __attribute__((tls_model("initial-exec")));
 593
 594 #  define __glXGetCurrentContext()      __glX_tls_Context
 595
 596 # else
 597
 598 extern __GLXcontext *__glXGetCurrentContext(void);
 599
 600 # endif /* defined( GLX_USE_TLS ) */
 601
 602 #else
 603
 604 extern __GLXcontext *__glXcurrentContext;
 605 #define __glXGetCurrentContext()        __glXcurrentContext
 606 #define __glXSetCurrentContext(gc)      __glXcurrentContext = gc
 607
 608 #endif /* defined( USE_XTHREADS ) || defined( PTHREADS ) */
 609
 610
 611 /*
 612 ** Global lock for all threads in this address space using the GLX
 613 ** extension
 614 */
 615 #if defined( USE_XTHREADS )
 616 extern xmutex_rec __glXmutex;
 617 #define __glXLock()    xmutex_lock(&__glXmutex)
 618 #define __glXUnlock()  xmutex_unlock(&__glXmutex)
 619 #elif defined( PTHREADS )
 620 extern pthread_mutex_t __glXmutex;
 621 #define __glXLock()    pthread_mutex_lock(&__glXmutex)
 622 #define __glXUnlock()  pthread_mutex_unlock(&__glXmutex)
 623 #else
 624 #define __glXLock()
 625 #define __glXUnlock()
 626 #endif
 627
 628 /*
 629 ** Setup for a command.  Initialize the extension for dpy if necessary.
 630 */
 631 extern CARD8 __glXSetupForCommand(Display *dpy);
 632
 633 /************************************************************************/
 634
 635 /*
 636 ** Data conversion and packing support.
 637 */
 638
 639 extern const GLuint __glXDefaultPixelStore[9];
 640
 641 /* Send an image to the server using RenderLarge. */
 642 extern void __glXSendLargeImage(__GLXcontext *gc, GLint compsize, GLint dim,
 643     GLint width, GLint height, GLint depth, GLenum format, GLenum type,
 644     const GLvoid *src, GLubyte *pc, GLubyte *modes);
 645
 646 /* Return the size, in bytes, of some pixel data */
 647 extern GLint __glImageSize(GLint, GLint, GLint, GLenum, GLenum, GLenum);
 648
 649 /* Return the number of elements per group of a specified format*/
 650 extern GLint __glElementsPerGroup(GLenum format, GLenum type);
 651
 652 /* Return the number of bytes per element, based on the element type (other
 653 ** than GL_BITMAP).
 654 */
 655 extern GLint __glBytesPerElement(GLenum type);
 656
 657 /*
 658 ** Fill the transport buffer with the data from the users buffer,
 659 ** applying some of the pixel store modes (unpack modes) to the data
 660 ** first.  As a side effect of this call, the "modes" field is
 661 ** updated to contain the modes needed by the server to decode the
 662 ** sent data.
 663 */
 664 extern void __glFillImage(__GLXcontext*, GLint, GLint, GLint, GLint, GLenum,
 665                           GLenum, const GLvoid*, GLubyte*, GLubyte*);
 666
 667 /* Copy map data with a stride into a packed buffer */
 668 extern void __glFillMap1f(GLint, GLint, GLint, const GLfloat *, GLubyte *);
 669 extern void __glFillMap1d(GLint, GLint, GLint, const GLdouble *, GLubyte *);
 670 extern void __glFillMap2f(GLint, GLint, GLint, GLint, GLint,
 671                           const GLfloat *, GLfloat *);
 672 extern void __glFillMap2d(GLint, GLint, GLint, GLint, GLint,
 673                           const GLdouble *, GLdouble *);
 674
 675 /*
 676 ** Empty an image out of the reply buffer into the clients memory applying
 677 ** the pack modes to pack back into the clients requested format.
 678 */
 679 extern void __glEmptyImage(__GLXcontext*, GLint, GLint, GLint, GLint, GLenum,
 680                            GLenum, const GLubyte *, GLvoid *);
 681
 682
 683 /*
 684 ** Allocate and Initialize Vertex Array client state
 685 */
 686 extern void __glXInitVertexArrayState(__GLXcontext*);
 687
 688 /*
 689 ** Inform the Server of the major and minor numbers and of the client
 690 ** libraries extension string.
 691 */
 692 extern void __glXClientInfo (  Display *dpy, int opcode );
 693
 694 /************************************************************************/
 695
 696 /*
 697 ** Declarations that should be in Xlib
 698 */
 699 #ifdef __GL_USE_OUR_PROTOTYPES
 700 extern void _XFlush(Display*);
 701 extern Status _XReply(Display*, xReply*, int, Bool);
 702 extern void _XRead(Display*, void*, long);
 703 extern void _XSend(Display*, const void*, long);
 704 #endif
 705
 706
 707 extern void __glXInitializeVisualConfigFromTags( __GLcontextModes *config,
 708     int count, const INT32 *bp, Bool tagged_only, Bool fbconfig_style_tags );
 709
 710 extern char * __glXGetStringFromServer( Display * dpy, int opcode,
 711     CARD32 glxCode, CARD32 for_whom, CARD32 name );
 712
 713 extern char *__glXstrdup(const char *str);
 714
 715
 716 extern const char __glXGLClientVersion[];
 717 extern const char __glXGLClientExtensions[];
 718
 719 /* Get the unadjusted system time */
 720 extern int __glXGetUST( int64_t * ust );
 721
 722 extern GLboolean __glXGetMscRateOML(Display * dpy, GLXDrawable drawable,
 723                                     int32_t * numerator, int32_t * denominator);
 724
 725 #ifdef GLX_DIRECT_RENDERING
 726 GLboolean
 727 __driGetMscRateOML(__DRIdrawable *draw, int32_t *numerator, int32_t *denominator);
 728 #endif
 729
 730 #endif /* !__GLX_client_h__ */