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 #if defined( XTHREADS )
  64 # include "Xthreads.h"
  65 #elif defined( PTHREADS )
  66 # include <pthread.h>
  67 #endif
  68
  69 #define GLX_MAJOR_VERSION       1       /* current version numbers */
  70 #define GLX_MINOR_VERSION       4
  71
  72 #define __GLX_MAX_TEXTURE_UNITS 32
  73
  74 typedef struct __GLXcontextRec __GLXcontext;
  75 typedef struct __GLXdisplayPrivateRec __GLXdisplayPrivate;
  76 typedef struct _glapi_table __GLapi;
  77
  78 /************************************************************************/
  79
  80 #ifdef GLX_DIRECT_RENDERING
  81
  82 #include <GL/internal/dri_interface.h>
  83
  84
  85 /**
  86  * Display dependent methods.  This structure is initialized during the
  87  * \c driCreateDisplay call.
  88  */
  89 struct __DRIdisplayRec {
  90     /**
  91      * Method to destroy the private DRI display data.
  92      */
  93     void (*destroyDisplay)(Display *dpy, void *displayPrivate);
  94
  95     /**
  96      * Opaque pointer to private per display direct rendering data.
  97      * \c NULL if direct rendering is not supported on this display.
  98      */
  99     struct __DRIdisplayPrivateRec *private;
 100
 101     /**
 102      * Array of pointers to methods to create and initialize the private DRI
 103      * screen data.
 104      */
 105     PFNCREATENEWSCREENFUNC * createNewScreen;
 106 };
 107
 108
 109 /*
 110 ** We keep a linked list of these structures, one per DRI device driver.
 111 */
 112 struct __DRIdriverRec {
 113    const char *name;
 114    void *handle;
 115    PFNCREATENEWSCREENFUNC createNewScreenFunc;
 116    struct __DRIdriverRec *next;
 117 };
 118
 119 /*
 120 ** Function to create and DRI display data and initialize the display
 121 ** dependent methods.
 122 */
 123 extern void *driCreateDisplay(Display *dpy, __DRIdisplay *pdisp);
 124
 125 extern  __DRIdriver *driGetDriver(Display *dpy, int scrNum);
 126
 127 extern void DRI_glXUseXFont( Font font, int first, int count, int listbase );
 128
 129 /*
 130 ** Functions to obtain driver configuration information from a direct
 131 ** rendering client application
 132 */
 133 extern const char *glXGetScreenDriver (Display *dpy, int scrNum);
 134
 135 extern const char *glXGetDriverConfig (const char *driverName);
 136
 137 extern Bool __glXWindowExists(Display *dpy, GLXDrawable draw);
 138
 139 #endif
 140
 141 /************************************************************************/
 142
 143 #define __GL_CLIENT_ATTRIB_STACK_DEPTH 16
 144
 145 typedef struct __GLXpixelStoreModeRec {
 146     GLboolean swapEndian;
 147     GLboolean lsbFirst;
 148     GLuint rowLength;
 149     GLuint imageHeight;
 150     GLuint imageDepth;
 151     GLuint skipRows;
 152     GLuint skipPixels;
 153     GLuint skipImages;
 154     GLuint alignment;
 155 } __GLXpixelStoreMode;
 156
 157 /* The next 3 structures are deprecated.  Client state is no longer tracked
 158  * using them.  They only remain to maintain the layout / structure offset of
 159  * __GLXcontextRec.  In XFree86 5.0 they will be removed altogether.
 160  */
 161
 162 typedef struct __GLXvertexArrayPointerStateRecDEPRECATED {
 163     GLboolean enable;
 164     void (*proc)(const void *);
 165     const GLubyte *ptr;
 166     GLsizei skip;
 167     GLint size;
 168     GLenum type;
 169     GLsizei stride;
 170 } __GLXvertexArrayPointerStateDEPRECATED;
 171
 172 typedef struct __GLXvertArrayStateRecDEPRECATED {
 173     __GLXvertexArrayPointerStateDEPRECATED vertex;
 174     __GLXvertexArrayPointerStateDEPRECATED normal;
 175     __GLXvertexArrayPointerStateDEPRECATED color;
 176     __GLXvertexArrayPointerStateDEPRECATED index;
 177     __GLXvertexArrayPointerStateDEPRECATED texCoord[__GLX_MAX_TEXTURE_UNITS];
 178     __GLXvertexArrayPointerStateDEPRECATED edgeFlag;
 179     GLint maxElementsVertices;
 180     GLint maxElementsIndices;
 181     GLint activeTexture;
 182 } __GLXvertArrayStateDEPRECATED;
 183
 184 typedef struct __GLXattributeRecDEPRECATED {
 185         GLuint mask;
 186
 187         /*
 188         ** Pixel storage state.  Most of the pixel store mode state is kept
 189         ** here and used by the client code to manage the packing and
 190         ** unpacking of data sent to/received from the server.
 191         */
 192         __GLXpixelStoreMode storePack, storeUnpack;
 193
 194         /*
 195         ** Vertex Array storage state.  The vertex array component
 196         ** state is stored here and is used to manage the packing of
 197         ** DrawArrays data sent to the server.
 198         */
 199         __GLXvertArrayStateDEPRECATED vertArray;
 200 } __GLXattributeDEPRECATED;
 201
 202
 203 typedef struct __GLXattributeRec {
 204     GLuint mask;
 205
 206     /**
 207      * Pixel storage state.  Most of the pixel store mode state is kept
 208      * here and used by the client code to manage the packing and
 209      * unpacking of data sent to/received from the server.
 210      */
 211     __GLXpixelStoreMode storePack, storeUnpack;
 212
 213     /**
 214      * Is EXT_vertex_array / GL 1.1 DrawArrays protocol specifically
 215      * disabled?
 216      */
 217     GLboolean NoDrawArraysProtocol;
 218
 219     /**
 220      * Vertex Array storage state.  The vertex array component
 221      * state is stored here and is used to manage the packing of
 222      * DrawArrays data sent to the server.
 223      */
 224     struct array_state_vector * array_state;
 225 } __GLXattribute;
 226
 227 typedef struct __GLXattributeMachineRec {
 228         __GLXattribute *stack[__GL_CLIENT_ATTRIB_STACK_DEPTH];
 229         __GLXattribute **stackPointer;
 230 } __GLXattributeMachine;
 231
 232 /**
 233  * GLX state that needs to be kept on the client.  One of these records
 234  * exist for each context that has been made current by this client.
 235  */
 236 struct __GLXcontextRec {
 237     /**
 238      * \name Drawing command buffer.
 239      *
 240      * Drawing commands are packed into this buffer before being sent as a
 241      * single GLX protocol request.  The buffer is sent when it overflows or
 242      * is flushed by \c __glXFlushRenderBuffer.  \c pc is the next location
 243      * in the buffer to be filled.  \c limit is described above in the buffer
 244      * slop discussion.
 245      *
 246      * Commands that require large amounts of data to be transfered will
 247      * also use this buffer to hold a header that describes the large
 248      * command.
 249      *
 250      * These must be the first 6 fields since they are static initialized
 251      * in the dummy context in glxext.c
 252      */
 253     /*@{*/
 254     GLubyte *buf;
 255     GLubyte *pc;
 256     GLubyte *limit;
 257     GLubyte *bufEnd;
 258     GLint bufSize;
 259     /*@}*/
 260
 261     /**
 262      * The XID of this rendering context.  When the context is created a
 263      * new XID is allocated.  This is set to None when the context is
 264      * destroyed but is still current to some thread. In this case the
 265      * context will be freed on next MakeCurrent.
 266      */
 267     XID xid;
 268
 269     /**
 270      * The XID of the \c shareList context.
 271      */
 272     XID share_xid;
 273
 274     /**
 275      * Visual id.
 276      *
 277      * \deprecated
 278      * This filed has been largely been replaced by the \c mode field, but
 279      * the work is not quite done.
 280      */
 281     VisualID vid;
 282
 283     /**
 284      * Screen number.
 285      */
 286     GLint screen;
 287
 288     /**
 289      * \c GL_TRUE if the context was created with ImportContext, which
 290      * means the server-side context was created by another X client.
 291      */
 292     GLboolean imported;
 293
 294     /**
 295      * The context tag returned by MakeCurrent when this context is made
 296      * current. This tag is used to identify the context that a thread has
 297      * current so that proper server context management can be done.  It is
 298      * used for all context specific commands (i.e., \c Render, \c RenderLarge,
 299      * \c WaitX, \c WaitGL, \c UseXFont, and \c MakeCurrent (for the old
 300      * context)).
 301      */
 302     GLXContextTag currentContextTag;
 303
 304     /**
 305      * \name Rendering mode
 306      *
 307      * The rendering mode is kept on the client as well as the server.
 308      * When \c glRenderMode is called, the buffer associated with the
 309      * previous rendering mode (feedback or select) is filled.
 310      */
 311     /*@{*/
 312     GLenum renderMode;
 313     GLfloat *feedbackBuf;
 314     GLuint *selectBuf;
 315     /*@}*/
 316
 317     /**
 318      * This is \c GL_TRUE if the pixel unpack modes are such that an image
 319      * can be unpacked from the clients memory by just copying.  It may
 320      * still be true that the server will have to do some work.  This
 321      * just promises that a straight copy will fetch the correct bytes.
 322      */
 323     GLboolean fastImageUnpack;
 324
 325     /**
 326      * Fill newImage with the unpacked form of \c oldImage getting it
 327      * ready for transport to the server.
 328      */
 329     void (*fillImage)(__GLXcontext*, GLint, GLint, GLint, GLint, GLenum,
 330                       GLenum, const GLvoid*, GLubyte*, GLubyte*);
 331
 332     /**
 333      * \name Client side attribs.
 334      */
 335     /*@{*/
 336     __GLXattributeDEPRECATED stateDEPRECATED;
 337     __GLXattributeMachine attributes;
 338     /*@}*/
 339
 340     /**
 341      * Client side error code.  This is set when client side gl API
 342      * routines need to set an error because of a bad enumerant or
 343      * running out of memory, etc.
 344      */
 345     GLenum error;
 346
 347     /**
 348      * Whether this context does direct rendering.
 349      */
 350     Bool isDirect;
 351
 352     /**
 353      * \c dpy of current display for this context.  Will be \c NULL if not
 354      * current to any display, or if this is the "dummy context".
 355      */
 356     Display *currentDpy;
 357
 358     /**
 359      * The current drawable for this context.  Will be None if this
 360      * context is not current to any drawable.  currentReadable is below.
 361      */
 362     GLXDrawable currentDrawable;
 363
 364     /**
 365      * \name GL Constant Strings
 366      *
 367      * Constant strings that describe the server implementation
 368      * These pertain to GL attributes, not to be confused with
 369      * GLX versioning attributes.
 370      */
 371     /*@{*/
 372     GLubyte *vendor;
 373     GLubyte *renderer;
 374     GLubyte *version;
 375     GLubyte *extensions;
 376     /*@}*/
 377
 378     /**
 379      * Record the dpy this context was created on for later freeing
 380      */
 381     Display *createDpy;
 382
 383     /**
 384      * Maximum small render command size.  This is the smaller of 64k and
 385      * the size of the above buffer.
 386      */
 387     GLint maxSmallRenderCommandSize;
 388
 389     /**
 390      * Major opcode for the extension.  Copied here so a lookup isn't
 391      * needed.
 392      */
 393     GLint majorOpcode;
 394
 395 #ifdef GLX_DIRECT_RENDERING
 396     /**
 397      * Per context direct rendering interface functions and data.
 398      */
 399     __DRIcontext driContext;
 400 #endif
 401
 402     /**
 403      * \c GLXFBConfigID used to create this context.  May be \c None.  This
 404      * field has been replaced by the \c mode field.
 405      *
 406      * \since Internal API version 20030317.
 407      *
 408      * \deprecated
 409      * This filed has been largely been replaced by the \c mode field, but
 410      * the work is not quite done.
 411      */
 412     GLXFBConfigID  fbconfigID;
 413
 414     /**
 415      * The current read-drawable for this context.  Will be None if this
 416      * context is not current to any drawable.
 417      *
 418      * \since Internal API version 20030606.
 419      */
 420     GLXDrawable currentReadable;
 421
 422    /**
 423     * Pointer to client-state data that is private to libGL.  This is only
 424     * used for indirect rendering contexts.
 425     *
 426     * No internal API version change was made for this change.  Client-side
 427     * drivers should NEVER use this data or even care that it exists.
 428     */
 429    void * client_state_private;
 430
 431    /**
 432     * Stored value for \c glXQueryContext attribute \c GLX_RENDER_TYPE.
 433     */
 434    int renderType;
 435
 436    /**
 437     * \name Raw server GL version
 438     *
 439     * True core GL version supported by the server.  This is the raw value
 440     * returned by the server, and it may not reflect what is actually
 441     * supported (or reported) by the client-side library.
 442     */
 443     /*@{*/
 444    int server_major;        /**< Major version number. */
 445    int server_minor;        /**< Minor version number. */
 446     /*@}*/
 447
 448     char gl_extension_bits[ __GL_EXT_BYTES ];
 449 };
 450
 451 #define __glXSetError(gc,code) \
 452     if (!(gc)->error) {        \
 453         (gc)->error = code;    \
 454     }
 455
 456 extern void __glFreeAttributeState(__GLXcontext *);
 457
 458 /************************************************************************/
 459
 460 /**
 461  * The size of the largest drawing command known to the implementation
 462  * that will use the GLXRender GLX command.  In this case it is
 463  * \c glPolygonStipple.
 464  */
 465 #define __GLX_MAX_SMALL_RENDER_CMD_SIZE 156
 466
 467 /**
 468  * To keep the implementation fast, the code uses a "limit" pointer
 469  * to determine when the drawing command buffer is too full to hold
 470  * another fixed size command.  This constant defines the amount of
 471  * space that must always be available in the drawing command buffer
 472  * at all times for the implementation to work.  It is important that
 473  * the number be just large enough, but not so large as to reduce the
 474  * efficacy of the buffer.  The "+32" is just to keep the code working
 475  * in case somebody counts wrong.
 476  */
 477 #define __GLX_BUFFER_LIMIT_SIZE (__GLX_MAX_SMALL_RENDER_CMD_SIZE + 32)
 478
 479 /**
 480  * This implementation uses a smaller threshold for switching
 481  * to the RenderLarge protocol than the protcol requires so that
 482  * large copies don't occur.
 483  */
 484 #define __GLX_RENDER_CMD_SIZE_LIMIT     4096
 485
 486 /**
 487  * One of these records exists per screen of the display.  It contains
 488  * a pointer to the config data for that screen (if the screen supports GL).
 489  */
 490 typedef struct __GLXscreenConfigsRec {
 491     /**
 492      * GLX extension string reported by the X-server.
 493      */
 494     const char *serverGLXexts;
 495
 496     /**
 497      * GLX extension string to be reported to applications.  This is the
 498      * set of extensions that the application can actually use.
 499      */
 500     char *effectiveGLXexts;
 501
 502 #ifdef GLX_DIRECT_RENDERING
 503     /**
 504      * Per screen direct rendering interface functions and data.
 505      */
 506     __DRIscreen driScreen;
 507 #endif
 508
 509     /**
 510      * Linked list of configurations for this screen.
 511      */
 512     __GLcontextModes *configs;
 513
 514     /**
 515      * Per-screen dynamic GLX extension tracking.  The \c direct_support
 516      * field only contains enough bits for 64 extensions.  Should libGL
 517      * ever need to track more than 64 GLX extensions, we can safely grow
 518      * this field.  The \c __GLXscreenConfigs structure is not used outside
 519      * libGL.
 520      */
 521     /*@{*/
 522     unsigned char direct_support[8];
 523     GLboolean ext_list_first_time;
 524     /*@}*/
 525
 526 } __GLXscreenConfigs;
 527
 528 /**
 529  * Per display private data.  One of these records exists for each display
 530  * that is using the OpenGL (GLX) extension.
 531  */
 532 struct __GLXdisplayPrivateRec {
 533     /**
 534      * Back pointer to the display
 535      */
 536     Display *dpy;
 537
 538     /**
 539      * The \c majorOpcode is common to all connections to the same server.
 540      * It is also copied into the context structure.
 541      */
 542     int majorOpcode;
 543
 544     /**
 545      * \name Server Version
 546      *
 547      * Major and minor version returned by the server during initialization.
 548      */
 549     /*@{*/
 550     int majorVersion, minorVersion;
 551     /*@}*/
 552
 553     /**
 554      * \name Storage for the servers GLX vendor and versions strings.
 555      *
 556      * These are the same for all screens on this display. These fields will
 557      * be filled in on demand.
 558      */
 559     /*@{*/
 560     const char *serverGLXvendor;
 561     const char *serverGLXversion;
 562     /*@}*/
 563
 564     /**
 565      * Configurations of visuals for all screens on this display.
 566      * Also, per screen data which now includes the server \c GLX_EXTENSION
 567      * string.
 568      */
 569     __GLXscreenConfigs *screenConfigs;
 570
 571 #ifdef GLX_DIRECT_RENDERING
 572     /**
 573      * Per display direct rendering interface functions and data.
 574      */
 575     __DRIdisplay driDisplay;
 576 #endif
 577 };
 578
 579 void __glXFreeContext(__GLXcontext*);
 580
 581 extern GLubyte *__glXFlushRenderBuffer(__GLXcontext*, GLubyte*);
 582
 583 extern void __glXSendLargeChunk(__GLXcontext *gc, GLint requestNumber,
 584                                 GLint totalRequests,
 585                                 const GLvoid * data, GLint dataLen);
 586
 587 extern void __glXSendLargeCommand(__GLXcontext *, const GLvoid *, GLint,
 588                                   const GLvoid *, GLint);
 589
 590 /* Initialize the GLX extension for dpy */
 591 extern __GLXdisplayPrivate *__glXInitialize(Display*);
 592
 593 /************************************************************************/
 594
 595 extern int __glXDebug;
 596
 597 /* This is per-thread storage in an MT environment */
 598 #if defined( XTHREADS ) || defined( PTHREADS )
 599
 600 extern void __glXSetCurrentContext(__GLXcontext *c);
 601
 602 # if defined( GLX_USE_TLS )
 603
 604 extern __thread void * __glX_tls_Context
 605     __attribute__((tls_model("initial-exec")));
 606
 607 #  define __glXGetCurrentContext()      __glX_tls_Context
 608
 609 # else
 610
 611 extern __GLXcontext *__glXGetCurrentContext(void);
 612
 613 # endif /* defined( GLX_USE_TLS ) */
 614
 615 #else
 616
 617 extern __GLXcontext *__glXcurrentContext;
 618 #define __glXGetCurrentContext()        __glXcurrentContext
 619 #define __glXSetCurrentContext(gc)      __glXcurrentContext = gc
 620
 621 #endif /* defined( XTHREADS ) || defined( PTHREADS ) */
 622
 623
 624 /*
 625 ** Global lock for all threads in this address space using the GLX
 626 ** extension
 627 */
 628 #if defined( XTHREADS )
 629 extern xmutex_rec __glXmutex;
 630 #define __glXLock()    xmutex_lock(&__glXmutex)
 631 #define __glXUnlock()  xmutex_unlock(&__glXmutex)
 632 #elif defined( PTHREADS )
 633 extern pthread_mutex_t __glXmutex;
 634 #define __glXLock()    pthread_mutex_lock(&__glXmutex)
 635 #define __glXUnlock()  pthread_mutex_unlock(&__glXmutex)
 636 #else
 637 #define __glXLock()
 638 #define __glXUnlock()
 639 #endif
 640
 641 /*
 642 ** Setup for a command.  Initialize the extension for dpy if necessary.
 643 */
 644 extern CARD8 __glXSetupForCommand(Display *dpy);
 645
 646 /************************************************************************/
 647
 648 /*
 649 ** Data conversion and packing support.
 650 */
 651
 652 extern const GLuint __glXDefaultPixelStore[9];
 653
 654 /* Send an image to the server using RenderLarge. */
 655 extern void __glXSendLargeImage(__GLXcontext *gc, GLint compsize, GLint dim,
 656     GLint width, GLint height, GLint depth, GLenum format, GLenum type,
 657     const GLvoid *src, GLubyte *pc, GLubyte *modes);
 658
 659 /* Return the size, in bytes, of some pixel data */
 660 extern GLint __glImageSize(GLint, GLint, GLint, GLenum, GLenum, GLenum);
 661
 662 /* Return the number of elements per group of a specified format*/
 663 extern GLint __glElementsPerGroup(GLenum format, GLenum type);
 664
 665 /* Return the number of bytes per element, based on the element type (other
 666 ** than GL_BITMAP).
 667 */
 668 extern GLint __glBytesPerElement(GLenum type);
 669
 670 /*
 671 ** Fill the transport buffer with the data from the users buffer,
 672 ** applying some of the pixel store modes (unpack modes) to the data
 673 ** first.  As a side effect of this call, the "modes" field is
 674 ** updated to contain the modes needed by the server to decode the
 675 ** sent data.
 676 */
 677 extern void __glFillImage(__GLXcontext*, GLint, GLint, GLint, GLint, GLenum,
 678                           GLenum, const GLvoid*, GLubyte*, GLubyte*);
 679
 680 /* Copy map data with a stride into a packed buffer */
 681 extern void __glFillMap1f(GLint, GLint, GLint, const GLfloat *, GLubyte *);
 682 extern void __glFillMap1d(GLint, GLint, GLint, const GLdouble *, GLubyte *);
 683 extern void __glFillMap2f(GLint, GLint, GLint, GLint, GLint,
 684                           const GLfloat *, GLfloat *);
 685 extern void __glFillMap2d(GLint, GLint, GLint, GLint, GLint,
 686                           const GLdouble *, GLdouble *);
 687
 688 /*
 689 ** Empty an image out of the reply buffer into the clients memory applying
 690 ** the pack modes to pack back into the clients requested format.
 691 */
 692 extern void __glEmptyImage(__GLXcontext*, GLint, GLint, GLint, GLint, GLenum,
 693                            GLenum, const GLubyte *, GLvoid *);
 694
 695
 696 /*
 697 ** Allocate and Initialize Vertex Array client state
 698 */
 699 extern void __glXInitVertexArrayState(__GLXcontext*);
 700
 701 /*
 702 ** Inform the Server of the major and minor numbers and of the client
 703 ** libraries extension string.
 704 */
 705 extern void __glXClientInfo (  Display *dpy, int opcode );
 706
 707 /************************************************************************/
 708
 709 /*
 710 ** Declarations that should be in Xlib
 711 */
 712 #ifdef __GL_USE_OUR_PROTOTYPES
 713 extern void _XFlush(Display*);
 714 extern Status _XReply(Display*, xReply*, int, Bool);
 715 extern void _XRead(Display*, void*, long);
 716 extern void _XSend(Display*, const void*, long);
 717 #endif
 718
 719
 720 extern void __glXInitializeVisualConfigFromTags( __GLcontextModes *config,
 721     int count, const INT32 *bp, Bool tagged_only, Bool fbconfig_style_tags );
 722
 723 extern char * __glXGetStringFromServer( Display * dpy, int opcode,
 724     CARD32 glxCode, CARD32 for_whom, CARD32 name );
 725
 726 extern char *__glXstrdup(const char *str);
 727
 728
 729 extern const char __glXGLClientVersion[];
 730 extern const char __glXGLClientExtensions[];
 731
 732 /* Determine the internal API version */
 733 extern int __glXGetInternalVersion(void);
 734
 735 /* Get the unadjusted system time */
 736 extern int __glXGetUST( int64_t * ust );
 737
 738 #endif /* !__GLX_client_h__ */