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 110      * \deprecated  This array of function pointers has been replaced by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