glxclient.h revision c39bf5e273a4995a279ae2af59fc29e06ab47e29
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#ifdef GLX_BUILT_IN_XMESA 69#include "realglx.h" /* just silences prototype warnings */ 70#endif 71 72#define GLX_MAJOR_VERSION 1 /* current version numbers */ 73#define GLX_MINOR_VERSION 4 74 75#define __GLX_MAX_TEXTURE_UNITS 32 76 77typedef struct __GLXcontextRec __GLXcontext; 78typedef struct __GLXdisplayPrivateRec __GLXdisplayPrivate; 79typedef struct _glapi_table __GLapi; 80 81/************************************************************************/ 82 83#ifdef GLX_DIRECT_RENDERING 84 85#include <GL/internal/dri_interface.h> 86 87typedef void *(*CreateScreenFunc)(Display *dpy, int scrn, __DRIscreen *psc, 88 int numConfigs, __GLXvisualConfig *config); 89 90typedef void *(*CreateNewScreenFunc)(Display *dpy, int scrn, __DRIscreen *psc, 91 const __GLcontextModes * modes, const __DRIversion * ddx_version, 92 const __DRIversion * dri_version, const __DRIversion * drm_version, 93 const __DRIframebuffer * frame_buffer, void * pSAREA, 94 int fd, int internal_api_version, __GLcontextModes ** driver_modes); 95 96 97/** 98 * Display dependent methods. This structure is initialized during the 99 * \c driCreateDisplay call. 100 */ 101struct __DRIdisplayRec { 102 /** 103 * Method to destroy the private DRI display data. 104 */ 105 void (*destroyDisplay)(Display *dpy, void *displayPrivate); 106 107 /** 108 * Opaque pointer to private per display direct rendering data. 109 * \c NULL if direct rendering is not supported on this display. 110 */ 111 struct __DRIdisplayPrivateRec *private; 112 113 /** 114 * Array of pointers to methods to create and initialize the private DRI 115 * screen data. 116 */ 117 CreateNewScreenFunc * createNewScreen; 118}; 119 120 121/* 122** We keep a linked list of these structures, one per DRI device driver. 123*/ 124struct __DRIdriverRec { 125 const char *name; 126 void *handle; 127 CreateNewScreenFunc createNewScreenFunc; 128 struct __DRIdriverRec *next; 129}; 130 131/* 132** Function to create and DRI display data and initialize the display 133** dependent methods. 134*/ 135extern void *driCreateDisplay(Display *dpy, __DRIdisplay *pdisp); 136 137extern __DRIdriver *driGetDriver(Display *dpy, int scrNum); 138 139extern void DRI_glXUseXFont( Font font, int first, int count, int listbase ); 140 141/* 142** Functions to obtain driver configuration information from a direct 143** rendering client application 144*/ 145extern const char *glXGetScreenDriver (Display *dpy, int scrNum); 146 147extern const char *glXGetDriverConfig (const char *driverName); 148 149#endif 150 151/************************************************************************/ 152 153#define __GL_CLIENT_ATTRIB_STACK_DEPTH 16 154 155typedef struct __GLXpixelStoreModeRec { 156 GLboolean swapEndian; 157 GLboolean lsbFirst; 158 GLuint rowLength; 159 GLuint imageHeight; 160 GLuint imageDepth; 161 GLuint skipRows; 162 GLuint skipPixels; 163 GLuint skipImages; 164 GLuint alignment; 165} __GLXpixelStoreMode; 166 167/* The next 3 structures are deprecated. Client state is no longer tracked 168 * using them. They only remain to maintain the layout / structure offset of 169 * __GLXcontextRec. In XFree86 5.0 they will be removed altogether. 170 */ 171 172typedef struct __GLXvertexArrayPointerStateRecDEPRECATED { 173 GLboolean enable; 174 void (*proc)(const void *); 175 const GLubyte *ptr; 176 GLsizei skip; 177 GLint size; 178 GLenum type; 179 GLsizei stride; 180} __GLXvertexArrayPointerStateDEPRECATED; 181 182typedef struct __GLXvertArrayStateRecDEPRECATED { 183 __GLXvertexArrayPointerStateDEPRECATED vertex; 184 __GLXvertexArrayPointerStateDEPRECATED normal; 185 __GLXvertexArrayPointerStateDEPRECATED color; 186 __GLXvertexArrayPointerStateDEPRECATED index; 187 __GLXvertexArrayPointerStateDEPRECATED texCoord[__GLX_MAX_TEXTURE_UNITS]; 188 __GLXvertexArrayPointerStateDEPRECATED edgeFlag; 189 GLint maxElementsVertices; 190 GLint maxElementsIndices; 191 GLint activeTexture; 192} __GLXvertArrayStateDEPRECATED; 193 194typedef struct __GLXattributeRecDEPRECATED { 195 GLuint mask; 196 197 /* 198 ** Pixel storage state. Most of the pixel store mode state is kept 199 ** here and used by the client code to manage the packing and 200 ** unpacking of data sent to/received from the server. 201 */ 202 __GLXpixelStoreMode storePack, storeUnpack; 203 204 /* 205 ** Vertex Array storage state. The vertex array component 206 ** state is stored here and is used to manage the packing of 207 ** DrawArrays data sent to the server. 208 */ 209 __GLXvertArrayStateDEPRECATED vertArray; 210} __GLXattributeDEPRECATED; 211 212 213typedef struct __GLXattributeRec { 214 GLuint mask; 215 216 /** 217 * Pixel storage state. Most of the pixel store mode state is kept 218 * here and used by the client code to manage the packing and 219 * unpacking of data sent to/received from the server. 220 */ 221 __GLXpixelStoreMode storePack, storeUnpack; 222 223 /** 224 * Is EXT_vertex_array / GL 1.1 DrawArrays protocol specifically 225 * disabled? 226 */ 227 GLboolean NoDrawArraysProtocol; 228 229 /** 230 * Vertex Array storage state. The vertex array component 231 * state is stored here and is used to manage the packing of 232 * DrawArrays data sent to the server. 233 */ 234 struct array_state_vector * array_state; 235} __GLXattribute; 236 237typedef struct __GLXattributeMachineRec { 238 __GLXattribute *stack[__GL_CLIENT_ATTRIB_STACK_DEPTH]; 239 __GLXattribute **stackPointer; 240} __GLXattributeMachine; 241 242/** 243 * GLX state that needs to be kept on the client. One of these records 244 * exist for each context that has been made current by this client. 245 */ 246struct __GLXcontextRec { 247 /** 248 * \name Drawing command buffer. 249 * 250 * Drawing commands are packed into this buffer before being sent as a 251 * single GLX protocol request. The buffer is sent when it overflows or 252 * is flushed by \c __glXFlushRenderBuffer. \c pc is the next location 253 * in the buffer to be filled. \c limit is described above in the buffer 254 * slop discussion. 255 * 256 * Commands that require large amounts of data to be transfered will 257 * also use this buffer to hold a header that describes the large 258 * command. 259 * 260 * These must be the first 6 fields since they are static initialized 261 * in the dummy context in glxext.c 262 */ 263 /*@{*/ 264 GLubyte *buf; 265 GLubyte *pc; 266 GLubyte *limit; 267 GLubyte *bufEnd; 268 GLint bufSize; 269 /*@}*/ 270 271 /** 272 * The XID of this rendering context. When the context is created a 273 * new XID is allocated. This is set to None when the context is 274 * destroyed but is still current to some thread. In this case the 275 * context will be freed on next MakeCurrent. 276 */ 277 XID xid; 278 279 /** 280 * The XID of the \c shareList context. 281 */ 282 XID share_xid; 283 284 /** 285 * Visual id. 286 * 287 * \deprecated 288 * This filed has been largely been replaced by the \c mode field, but 289 * the work is not quite done. 290 */ 291 VisualID vid; 292 293 /** 294 * Screen number. 295 */ 296 GLint screen; 297 298 /** 299 * \c GL_TRUE if the context was created with ImportContext, which 300 * means the server-side context was created by another X client. 301 */ 302 GLboolean imported; 303 304 /** 305 * The context tag returned by MakeCurrent when this context is made 306 * current. This tag is used to identify the context that a thread has 307 * current so that proper server context management can be done. It is 308 * used for all context specific commands (i.e., \c Render, \c RenderLarge, 309 * \c WaitX, \c WaitGL, \c UseXFont, and \c MakeCurrent (for the old 310 * context)). 311 */ 312 GLXContextTag currentContextTag; 313 314 /** 315 * \name Rendering mode 316 * 317 * The rendering mode is kept on the client as well as the server. 318 * When \c glRenderMode is called, the buffer associated with the 319 * previous rendering mode (feedback or select) is filled. 320 */ 321 /*@{*/ 322 GLenum renderMode; 323 GLfloat *feedbackBuf; 324 GLuint *selectBuf; 325 /*@}*/ 326 327 /** 328 * This is \c GL_TRUE if the pixel unpack modes are such that an image 329 * can be unpacked from the clients memory by just copying. It may 330 * still be true that the server will have to do some work. This 331 * just promises that a straight copy will fetch the correct bytes. 332 */ 333 GLboolean fastImageUnpack; 334 335 /** 336 * Fill newImage with the unpacked form of \c oldImage getting it 337 * ready for transport to the server. 338 */ 339 void (*fillImage)(__GLXcontext*, GLint, GLint, GLint, GLint, GLenum, 340 GLenum, const GLvoid*, GLubyte*, GLubyte*); 341 342 /** 343 * \name Client side attribs. 344 */ 345 /*@{*/ 346 __GLXattributeDEPRECATED stateDEPRECATED; 347 __GLXattributeMachine attributes; 348 /*@}*/ 349 350 /** 351 * Client side error code. This is set when client side gl API 352 * routines need to set an error because of a bad enumerant or 353 * running out of memory, etc. 354 */ 355 GLenum error; 356 357 /** 358 * Whether this context does direct rendering. 359 */ 360 Bool isDirect; 361 362 /** 363 * \c dpy of current display for this context. Will be \c NULL if not 364 * current to any display, or if this is the "dummy context". 365 */ 366 Display *currentDpy; 367 368 /** 369 * The current drawable for this context. Will be None if this 370 * context is not current to any drawable. currentReadable is below. 371 */ 372 GLXDrawable currentDrawable; 373 374 /** 375 * \name GL Constant Strings 376 * 377 * Constant strings that describe the server implementation 378 * These pertain to GL attributes, not to be confused with 379 * GLX versioning attributes. 380 */ 381 /*@{*/ 382 GLubyte *vendor; 383 GLubyte *renderer; 384 GLubyte *version; 385 GLubyte *extensions; 386 /*@}*/ 387 388 /** 389 * Record the dpy this context was created on for later freeing 390 */ 391 Display *createDpy; 392 393 /** 394 * Maximum small render command size. This is the smaller of 64k and 395 * the size of the above buffer. 396 */ 397 GLint maxSmallRenderCommandSize; 398 399 /** 400 * Major opcode for the extension. Copied here so a lookup isn't 401 * needed. 402 */ 403 GLint majorOpcode; 404 405#ifdef GLX_DIRECT_RENDERING 406 /** 407 * Per context direct rendering interface functions and data. 408 */ 409 __DRIcontext driContext; 410#endif 411 412 /** 413 * \c GLXFBConfigID used to create this context. May be \c None. This 414 * field has been replaced by the \c mode field. 415 * 416 * \since Internal API version 20030317. 417 * 418 * \deprecated 419 * This filed has been largely been replaced by the \c mode field, but 420 * the work is not quite done. 421 */ 422 GLXFBConfigID fbconfigID; 423 424 /** 425 * The current read-drawable for this context. Will be None if this 426 * context is not current to any drawable. 427 * 428 * \since Internal API version 20030606. 429 */ 430 GLXDrawable currentReadable; 431 432 /** 433 * Pointer to client-state data that is private to libGL. This is only 434 * used for indirect rendering contexts. 435 * 436 * No internal API version change was made for this change. Client-side 437 * drivers should NEVER use this data or even care that it exists. 438 */ 439 void * client_state_private; 440 441 /** 442 * Stored value for \c glXQueryContext attribute \c GLX_RENDER_TYPE. 443 */ 444 int renderType; 445 446 /** 447 * \name Raw server GL version 448 * 449 * True core GL version supported by the server. This is the raw value 450 * returned by the server, and it may not reflect what is actually 451 * supported (or reported) by the client-side library. 452 */ 453 /*@{*/ 454 int server_major; /**< Major version number. */ 455 int server_minor; /**< Minor version number. */ 456 /*@}*/ 457 458 char gl_extension_bits[ __GL_EXT_BYTES ]; 459}; 460 461#define __glXSetError(gc,code) \ 462 if (!(gc)->error) { \ 463 (gc)->error = code; \ 464 } 465 466extern void __glFreeAttributeState(__GLXcontext *); 467 468/************************************************************************/ 469 470/** 471 * The size of the largest drawing command known to the implementation 472 * that will use the GLXRender GLX command. In this case it is 473 * \c glPolygonStipple. 474 */ 475#define __GLX_MAX_SMALL_RENDER_CMD_SIZE 156 476 477/** 478 * To keep the implementation fast, the code uses a "limit" pointer 479 * to determine when the drawing command buffer is too full to hold 480 * another fixed size command. This constant defines the amount of 481 * space that must always be available in the drawing command buffer 482 * at all times for the implementation to work. It is important that 483 * the number be just large enough, but not so large as to reduce the 484 * efficacy of the buffer. The "+32" is just to keep the code working 485 * in case somebody counts wrong. 486 */ 487#define __GLX_BUFFER_LIMIT_SIZE (__GLX_MAX_SMALL_RENDER_CMD_SIZE + 32) 488 489/** 490 * This implementation uses a smaller threshold for switching 491 * to the RenderLarge protocol than the protcol requires so that 492 * large copies don't occur. 493 */ 494#define __GLX_RENDER_CMD_SIZE_LIMIT 4096 495 496/** 497 * One of these records exists per screen of the display. It contains 498 * a pointer to the config data for that screen (if the screen supports GL). 499 */ 500typedef struct __GLXscreenConfigsRec { 501 /** 502 * GLX extension string reported by the X-server. 503 */ 504 const char *serverGLXexts; 505 506 /** 507 * GLX extension string to be reported to applications. This is the 508 * set of extensions that the application can actually use. 509 */ 510 char *effectiveGLXexts; 511 512#ifdef GLX_DIRECT_RENDERING 513 /** 514 * Per screen direct rendering interface functions and data. 515 */ 516 __DRIscreen driScreen; 517#endif 518 519 /** 520 * Linked list of configurations for this screen. 521 */ 522 __GLcontextModes *configs; 523 524 /** 525 * Per-screen dynamic GLX extension tracking. The \c direct_support 526 * field only contains enough bits for 64 extensions. Should libGL 527 * ever need to track more than 64 GLX extensions, we can safely grow 528 * this field. The \c __GLXscreenConfigs structure is not used outside 529 * libGL. 530 */ 531 /*@{*/ 532 unsigned char direct_support[8]; 533 GLboolean ext_list_first_time; 534 /*@}*/ 535 536} __GLXscreenConfigs; 537 538/** 539 * Per display private data. One of these records exists for each display 540 * that is using the OpenGL (GLX) extension. 541 */ 542struct __GLXdisplayPrivateRec { 543 /** 544 * Back pointer to the display 545 */ 546 Display *dpy; 547 548 /** 549 * The \c majorOpcode is common to all connections to the same server. 550 * It is also copied into the context structure. 551 */ 552 int majorOpcode; 553 554 /** 555 * \name Server Version 556 * 557 * Major and minor version returned by the server during initialization. 558 */ 559 /*@{*/ 560 int majorVersion, minorVersion; 561 /*@}*/ 562 563 /** 564 * \name Storage for the servers GLX vendor and versions strings. 565 * 566 * These are the same for all screens on this display. These fields will 567 * be filled in on demand. 568 */ 569 /*@{*/ 570 const char *serverGLXvendor; 571 const char *serverGLXversion; 572 /*@}*/ 573 574 /** 575 * Configurations of visuals for all screens on this display. 576 * Also, per screen data which now includes the server \c GLX_EXTENSION 577 * string. 578 */ 579 __GLXscreenConfigs *screenConfigs; 580 581#ifdef GLX_DIRECT_RENDERING 582 /** 583 * Per display direct rendering interface functions and data. 584 */ 585 __DRIdisplay driDisplay; 586#endif 587}; 588 589void __glXFreeContext(__GLXcontext*); 590 591extern GLubyte *__glXFlushRenderBuffer(__GLXcontext*, GLubyte*); 592 593extern void __glXSendLargeChunk(__GLXcontext *gc, GLint requestNumber, 594 GLint totalRequests, 595 const GLvoid * data, GLint dataLen); 596 597extern void __glXSendLargeCommand(__GLXcontext *, const GLvoid *, GLint, 598 const GLvoid *, GLint); 599 600/* Initialize the GLX extension for dpy */ 601extern __GLXdisplayPrivate *__glXInitialize(Display*); 602 603/************************************************************************/ 604 605extern int __glXDebug; 606 607/* This is per-thread storage in an MT environment */ 608#if defined( XTHREADS ) || defined( PTHREADS ) 609 610extern void __glXSetCurrentContext(__GLXcontext *c); 611 612# if defined( GLX_USE_TLS ) 613 614extern __thread void * __glX_tls_Context 615 __attribute__((tls_model("initial-exec"))); 616 617# define __glXGetCurrentContext() __glX_tls_Context 618 619# else 620 621extern __GLXcontext *__glXGetCurrentContext(void); 622 623# endif /* defined( GLX_USE_TLS ) */ 624 625#else 626 627extern __GLXcontext *__glXcurrentContext; 628#define __glXGetCurrentContext() __glXcurrentContext 629#define __glXSetCurrentContext(gc) __glXcurrentContext = gc 630 631#endif /* defined( XTHREADS ) || defined( PTHREADS ) */ 632 633 634/* 635** Global lock for all threads in this address space using the GLX 636** extension 637*/ 638#if defined( XTHREADS ) 639extern xmutex_rec __glXmutex; 640#define __glXLock() xmutex_lock(&__glXmutex) 641#define __glXUnlock() xmutex_unlock(&__glXmutex) 642#elif defined( PTHREADS ) 643extern pthread_mutex_t __glXmutex; 644#define __glXLock() pthread_mutex_lock(&__glXmutex) 645#define __glXUnlock() pthread_mutex_unlock(&__glXmutex) 646#else 647#define __glXLock() 648#define __glXUnlock() 649#endif 650 651/* 652** Setup for a command. Initialize the extension for dpy if necessary. 653*/ 654extern CARD8 __glXSetupForCommand(Display *dpy); 655 656/************************************************************************/ 657 658/* 659** Data conversion and packing support. 660*/ 661 662extern const GLuint __glXDefaultPixelStore[9]; 663 664/* Send an image to the server using RenderLarge. */ 665extern void __glXSendLargeImage(__GLXcontext *gc, GLint compsize, GLint dim, 666 GLint width, GLint height, GLint depth, GLenum format, GLenum type, 667 const GLvoid *src, GLubyte *pc, GLubyte *modes); 668 669/* Return the size, in bytes, of some pixel data */ 670extern GLint __glImageSize(GLint, GLint, GLint, GLenum, GLenum, GLenum); 671 672/* Return the number of elements per group of a specified format*/ 673extern GLint __glElementsPerGroup(GLenum format, GLenum type); 674 675/* Return the number of bytes per element, based on the element type (other 676** than GL_BITMAP). 677*/ 678extern GLint __glBytesPerElement(GLenum type); 679 680/* 681** Fill the transport buffer with the data from the users buffer, 682** applying some of the pixel store modes (unpack modes) to the data 683** first. As a side effect of this call, the "modes" field is 684** updated to contain the modes needed by the server to decode the 685** sent data. 686*/ 687extern void __glFillImage(__GLXcontext*, GLint, GLint, GLint, GLint, GLenum, 688 GLenum, const GLvoid*, GLubyte*, GLubyte*); 689 690/* Copy map data with a stride into a packed buffer */ 691extern void __glFillMap1f(GLint, GLint, GLint, const GLfloat *, GLubyte *); 692extern void __glFillMap1d(GLint, GLint, GLint, const GLdouble *, GLubyte *); 693extern void __glFillMap2f(GLint, GLint, GLint, GLint, GLint, 694 const GLfloat *, GLfloat *); 695extern void __glFillMap2d(GLint, GLint, GLint, GLint, GLint, 696 const GLdouble *, GLdouble *); 697 698/* 699** Empty an image out of the reply buffer into the clients memory applying 700** the pack modes to pack back into the clients requested format. 701*/ 702extern void __glEmptyImage(__GLXcontext*, GLint, GLint, GLint, GLint, GLenum, 703 GLenum, const GLubyte *, GLvoid *); 704 705 706/* 707** Allocate and Initialize Vertex Array client state 708*/ 709extern void __glXInitVertexArrayState(__GLXcontext*); 710 711/* 712** Inform the Server of the major and minor numbers and of the client 713** libraries extension string. 714*/ 715extern void __glXClientInfo ( Display *dpy, int opcode ); 716 717/************************************************************************/ 718 719/* 720** Declarations that should be in Xlib 721*/ 722#ifdef __GL_USE_OUR_PROTOTYPES 723extern void _XFlush(Display*); 724extern Status _XReply(Display*, xReply*, int, Bool); 725extern void _XRead(Display*, void*, long); 726extern void _XSend(Display*, const void*, long); 727#endif 728 729 730/* 731** GLX_BUILT_IN_XMESA controls whether libGL has a built-in verions of 732** Mesa that can render to non-GLX displays. 733*/ 734#ifdef GLX_BUILT_IN_XMESA 735#define GLX_PREFIX(function) _real_##function 736#else 737#define GLX_PREFIX(function) function 738#endif 739 740 741extern void __glXInitializeVisualConfigFromTags( __GLcontextModes *config, 742 int count, const INT32 *bp, Bool tagged_only, Bool fbconfig_style_tags ); 743 744extern char * __glXGetStringFromServer( Display * dpy, int opcode, 745 CARD32 glxCode, CARD32 for_whom, CARD32 name ); 746 747extern char *__glXstrdup(const char *str); 748 749 750extern const char __glXGLClientVersion[]; 751extern const char __glXGLClientExtensions[]; 752 753/* Determine the internal API version */ 754extern int __glXGetInternalVersion(void); 755 756/* Get the unadjusted system time */ 757extern int __glXGetUST( int64_t * ust ); 758 759#endif /* !__GLX_client_h__ */ 760