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