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