src/glx/x11/glxclient.h

   1 /* -*- mode: c; tab-width: 3; indent-tabs-mode: nil; c-basic-offset: 3; coding: utf-8-unix -*- */
   2 /*
   3  * SGI FREE SOFTWARE LICENSE B (Version 2.0, Sept. 18, 2008)
   4  * Copyright (C) 1991-2000 Silicon Graphics, Inc. All Rights Reserved.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the "Software"),
   8  * to deal in the Software without restriction, including without limitation
   9  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  10  * and/or sell copies of the Software, and to permit persons to whom the
  11  * Software is furnished to do so, subject to the following conditions:
  12  *
  13  * The above copyright notice including the dates of first publication and
  14  * either this permission notice or a reference to
  15  * http://oss.sgi.com/projects/FreeB/
  16  * shall be included in all copies or substantial portions of the Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  19  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  20  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
  21  * SILICON GRAPHICS, INC. BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
  22  * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
  23  * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  24  * SOFTWARE.
  25  *
  26  * Except as contained in this notice, the name of Silicon Graphics, Inc.
  27  * shall not be used in advertising or otherwise to promote the sale, use or
  28  * other dealings in this Software without prior written authorization from
  29  * Silicon Graphics, Inc.
  30  */
  31
  32 /**
  33  * \file glxclient.h
  34  * Direct rendering support added by Precision Insight, Inc.
  35  *
  36  * \author Kevin E. Martin <kevin@precisioninsight.com>
  37  */
  38
  39 #ifndef _GLX_client_h_
  40 #define _GLX_client_h_
  41 #define NEED_REPLIES
  42 #define NEED_EVENTS
  43 #include <X11/Xproto.h>
  44 #include <X11/Xlibint.h>
  45 #define GLX_GLXEXT_PROTOTYPES
  46 #include <GL/glx.h>
  47 #include <GL/glxext.h>
  48 #include <string.h>
  49 #include <stdlib.h>
  50 #include <stdio.h>
  51 #ifdef WIN32
  52 #include <stdint.h>
  53 #endif
  54 #include "GL/glxint.h"
  55 #include "GL/glxproto.h"
  56 #include "GL/internal/glcore.h"
  57 #include "glapi/glapitable.h"
  58 #include "glxhash.h"
  59 #if defined( USE_XTHREADS )
  60 # include <X11/Xthreads.h>
  61 #elif defined( PTHREADS )
  62 # include <pthread.h>
  63 #endif
  64
  65 #include "glxextensions.h"
  66
  67
  68 /* If we build the library with gcc's -fvisibility=hidden flag, we'll
  69  * use the PUBLIC macro to mark functions that are to be exported.
  70  *
  71  * We also need to define a USED attribute, so the optimizer doesn't
  72  * inline a static function that we later use in an alias. - ajax
  73  */
  74 #if defined(__GNUC__) && (__GNUC__ * 100 + __GNUC_MINOR__) >= 303
  75 #  define PUBLIC __attribute__((visibility("default")))
  76 #  define USED __attribute__((used))
  77 #else
  78 #  define PUBLIC
  79 #  define USED
  80 #endif
  81
  82
  83
  84 #define GLX_MAJOR_VERSION       1       /* current version numbers */
  85 #define GLX_MINOR_VERSION       4
  86
  87 #define __GLX_MAX_TEXTURE_UNITS 32
  88
  89 typedef struct __GLXscreenConfigsRec __GLXscreenConfigs;
  90 typedef struct __GLXcontextRec __GLXcontext;
  91 typedef struct __GLXdrawableRec __GLXdrawable;
  92 typedef struct __GLXdisplayPrivateRec __GLXdisplayPrivate;
  93 typedef struct _glapi_table __GLapi;
  94
  95 /************************************************************************/
  96
  97 #ifdef GLX_DIRECT_RENDERING
  98
  99 #define containerOf(ptr, type, member)                  \
 100     (type *)( (char *)ptr - offsetof(type,member) )
 101
 102 #include <GL/internal/dri_interface.h>
 103
 104
 105 /**
 106  * Display dependent methods.  This structure is initialized during the
 107  * \c driCreateDisplay call.
 108  */
 109 typedef struct __GLXDRIdisplayRec __GLXDRIdisplay;
 110 typedef struct __GLXDRIscreenRec __GLXDRIscreen;
 111 typedef struct __GLXDRIdrawableRec __GLXDRIdrawable;
 112 typedef struct __GLXDRIcontextRec __GLXDRIcontext;
 113
 114 #include "glxextensions.h"
 115
 116 struct __GLXDRIdisplayRec {
 117     /**
 118      * Method to destroy the private DRI display data.
 119      */
 120     void (*destroyDisplay)(__GLXDRIdisplay *display);
 121
 122     __GLXDRIscreen *(*createScreen)(__GLXscreenConfigs *psc, int screen,
 123                                     __GLXdisplayPrivate *priv);
 124 };
 125
 126 struct __GLXDRIscreenRec {
 127
 128     void (*destroyScreen)(__GLXscreenConfigs *psc);
 129
 130     __GLXDRIcontext *(*createContext)(__GLXscreenConfigs *psc,
 131                                       const __GLcontextModes *mode,
 132                                       GLXContext gc,
 133                                       GLXContext shareList, int renderType);
 134
 135     __GLXDRIdrawable *(*createDrawable)(__GLXscreenConfigs *psc,
 136                                         XID drawable,
 137                                         GLXDrawable glxDrawable,
 138                                         const __GLcontextModes *modes);
 139
 140     void (*swapBuffers)(__GLXDRIdrawable *pdraw);
 141     void (*copySubBuffer)(__GLXDRIdrawable *pdraw,
 142                           int x, int y, int width, int height);
 143 };
 144
 145 struct __GLXDRIcontextRec {
 146     void (*destroyContext)(__GLXDRIcontext *context, __GLXscreenConfigs *psc,
 147                            Display *dpy);
 148     Bool (*bindContext)(__GLXDRIcontext *context,
 149                         __GLXDRIdrawable *pdraw,
 150                         __GLXDRIdrawable *pread);
 151
 152     void (*unbindContext)(__GLXDRIcontext *context);
 153 };
 154
 155 struct __GLXDRIdrawableRec {
 156     void (*destroyDrawable)(__GLXDRIdrawable *drawable);
 157
 158     XID xDrawable;
 159     XID drawable;
 160     __GLXscreenConfigs *psc;
 161     GLenum textureTarget;
 162     __DRIdrawable *driDrawable;
 163 };
 164
 165 /*
 166 ** Function to create and DRI display data and initialize the display
 167 ** dependent methods.
 168 */
 169 extern __GLXDRIdisplay *driswCreateDisplay(Display *dpy);
 170 extern __GLXDRIdisplay *driCreateDisplay(Display *dpy);
 171 extern __GLXDRIdisplay *dri2CreateDisplay(Display *dpy);
 172
 173 extern void DRI_glXUseXFont( Font font, int first, int count, int listbase );
 174
 175 /*
 176 ** Functions to obtain driver configuration information from a direct
 177 ** rendering client application
 178 */
 179 extern const char *glXGetScreenDriver (Display *dpy, int scrNum);
 180
 181 extern const char *glXGetDriverConfig (const char *driverName);
 182
 183 #endif
 184
 185 /************************************************************************/
 186
 187 #define __GL_CLIENT_ATTRIB_STACK_DEPTH 16
 188
 189 typedef struct __GLXpixelStoreModeRec {
 190     GLboolean swapEndian;
 191     GLboolean lsbFirst;
 192     GLuint rowLength;
 193     GLuint imageHeight;
 194     GLuint imageDepth;
 195     GLuint skipRows;
 196     GLuint skipPixels;
 197     GLuint skipImages;
 198     GLuint alignment;
 199 } __GLXpixelStoreMode;
 200
 201
 202 typedef struct __GLXattributeRec {
 203     GLuint mask;
 204
 205     /**
 206      * Pixel storage state.  Most of the pixel store mode state is kept
 207      * here and used by the client code to manage the packing and
 208      * unpacking of data sent to/received from the server.
 209      */
 210     __GLXpixelStoreMode storePack, storeUnpack;
 211
 212     /**
 213      * Is EXT_vertex_array / GL 1.1 DrawArrays protocol specifically
 214      * disabled?
 215      */
 216     GLboolean NoDrawArraysProtocol;
 217
 218     /**
 219      * Vertex Array storage state.  The vertex array component
 220      * state is stored here and is used to manage the packing of
 221      * DrawArrays data sent to the server.
 222      */
 223     struct array_state_vector * array_state;
 224 } __GLXattribute;
 225
 226 typedef struct __GLXattributeMachineRec {
 227         __GLXattribute *stack[__GL_CLIENT_ATTRIB_STACK_DEPTH];
 228         __GLXattribute **stackPointer;
 229 } __GLXattributeMachine;
 230
 231 /**
 232  * GLX state that needs to be kept on the client.  One of these records
 233  * exist for each context that has been made current by this client.
 234  */
 235 struct __GLXcontextRec {
 236     /**
 237      * \name Drawing command buffer.
 238      *
 239      * Drawing commands are packed into this buffer before being sent as a
 240      * single GLX protocol request.  The buffer is sent when it overflows or
 241      * is flushed by \c __glXFlushRenderBuffer.  \c pc is the next location
 242      * in the buffer to be filled.  \c limit is described above in the buffer
 243      * slop discussion.
 244      *
 245      * Commands that require large amounts of data to be transfered will
 246      * also use this buffer to hold a header that describes the large
 247      * command.
 248      *
 249      * These must be the first 6 fields since they are static initialized
 250      * in the dummy context in glxext.c
 251      */
 252     /*@{*/
 253     GLubyte *buf;
 254     GLubyte *pc;
 255     GLubyte *limit;
 256     GLubyte *bufEnd;
 257     GLint bufSize;
 258     /*@}*/
 259
 260     /**
 261      * The XID of this rendering context.  When the context is created a
 262      * new XID is allocated.  This is set to None when the context is
 263      * destroyed but is still current to some thread. In this case the
 264      * context will be freed on next MakeCurrent.
 265      */
 266     XID xid;
 267
 268     /**
 269      * The XID of the \c shareList context.
 270      */
 271     XID share_xid;
 272
 273     /**
 274      * Screen number.
 275      */
 276     GLint screen;
 277     __GLXscreenConfigs *psc;
 278
 279     /**
 280      * \c GL_TRUE if the context was created with ImportContext, which
 281      * means the server-side context was created by another X client.
 282      */
 283     GLboolean imported;
 284
 285     /**
 286      * The context tag returned by MakeCurrent when this context is made
 287      * current. This tag is used to identify the context that a thread has
 288      * current so that proper server context management can be done.  It is
 289      * used for all context specific commands (i.e., \c Render, \c RenderLarge,
 290      * \c WaitX, \c WaitGL, \c UseXFont, and \c MakeCurrent (for the old
 291      * context)).
 292      */
 293     GLXContextTag currentContextTag;
 294
 295     /**
 296      * \name Rendering mode
 297      *
 298      * The rendering mode is kept on the client as well as the server.
 299      * When \c glRenderMode is called, the buffer associated with the
 300      * previous rendering mode (feedback or select) is filled.
 301      */
 302     /*@{*/
 303     GLenum renderMode;
 304     GLfloat *feedbackBuf;
 305     GLuint *selectBuf;
 306     /*@}*/
 307
 308     /**
 309      * This is \c GL_TRUE if the pixel unpack modes are such that an image
 310      * can be unpacked from the clients memory by just copying.  It may
 311      * still be true that the server will have to do some work.  This
 312      * just promises that a straight copy will fetch the correct bytes.
 313      */
 314     GLboolean fastImageUnpack;
 315
 316     /**
 317      * Fill newImage with the unpacked form of \c oldImage getting it
 318      * ready for transport to the server.
 319      */
 320     void (*fillImage)(__GLXcontext*, GLint, GLint, GLint, GLint, GLenum,
 321                       GLenum, const GLvoid*, GLubyte*, GLubyte*);
 322
 323     /**
 324      * Client side attribs.
 325      */
 326     __GLXattributeMachine attributes;
 327
 328     /**
 329      * Client side error code.  This is set when client side gl API
 330      * routines need to set an error because of a bad enumerant or
 331      * running out of memory, etc.
 332      */
 333     GLenum error;
 334
 335     /**
 336      * Whether this context does direct rendering.
 337      */
 338     Bool isDirect;
 339
 340     /**
 341      * \c dpy of current display for this context.  Will be \c NULL if not
 342      * current to any display, or if this is the "dummy context".
 343      */
 344     Display *currentDpy;
 345
 346     /**
 347      * The current drawable for this context.  Will be None if this
 348      * context is not current to any drawable.  currentReadable is below.
 349      */
 350     GLXDrawable currentDrawable;
 351
 352     /**
 353      * \name GL Constant Strings
 354      *
 355      * Constant strings that describe the server implementation
 356      * These pertain to GL attributes, not to be confused with
 357      * GLX versioning attributes.
 358      */
 359     /*@{*/
 360     GLubyte *vendor;
 361     GLubyte *renderer;
 362     GLubyte *version;
 363     GLubyte *extensions;
 364     /*@}*/
 365
 366     /**
 367      * Record the dpy this context was created on for later freeing
 368      */
 369     Display *createDpy;
 370
 371     /**
 372      * Maximum small render command size.  This is the smaller of 64k and
 373      * the size of the above buffer.
 374      */
 375     GLint maxSmallRenderCommandSize;
 376
 377     /**
 378      * Major opcode for the extension.  Copied here so a lookup isn't
 379      * needed.
 380      */
 381     GLint majorOpcode;
 382
 383     /**
 384      * Pointer to the mode used to create this context.
 385      */
 386     const __GLcontextModes * mode;
 387
 388 #ifdef GLX_DIRECT_RENDERING
 389     __GLXDRIcontext *driContext;
 390     __DRIcontext *__driContext;
 391 #endif
 392
 393     /**
 394      * The current read-drawable for this context.  Will be None if this
 395      * context is not current to any drawable.
 396      *
 397      * \since Internal API version 20030606.
 398      */
 399     GLXDrawable currentReadable;
 400
 401    /**
 402     * Pointer to client-state data that is private to libGL.  This is only
 403     * used for indirect rendering contexts.
 404     *
 405     * No internal API version change was made for this change.  Client-side
 406     * drivers should NEVER use this data or even care that it exists.
 407     */
 408    void * client_state_private;
 409
 410    /**
 411     * Stored value for \c glXQueryContext attribute \c GLX_RENDER_TYPE.
 412     */
 413    int renderType;
 414
 415    /**
 416     * \name Raw server GL version
 417     *
 418     * True core GL version supported by the server.  This is the raw value
 419     * returned by the server, and it may not reflect what is actually
 420     * supported (or reported) by the client-side library.
 421     */
 422     /*@{*/
 423    int server_major;        /**< Major version number. */
 424    int server_minor;        /**< Minor version number. */
 425     /*@}*/
 426
 427     char gl_extension_bits[ __GL_EXT_BYTES ];
 428 };
 429
 430 #define __glXSetError(gc,code) \
 431     if (!(gc)->error) {        \
 432         (gc)->error = code;    \
 433     }
 434
 435 extern void __glFreeAttributeState(__GLXcontext *);
 436
 437 /************************************************************************/
 438
 439 /**
 440  * The size of the largest drawing command known to the implementation
 441  * that will use the GLXRender GLX command.  In this case it is
 442  * \c glPolygonStipple.
 443  */
 444 #define __GLX_MAX_SMALL_RENDER_CMD_SIZE 156
 445
 446 /**
 447  * To keep the implementation fast, the code uses a "limit" pointer
 448  * to determine when the drawing command buffer is too full to hold
 449  * another fixed size command.  This constant defines the amount of
 450  * space that must always be available in the drawing command buffer
 451  * at all times for the implementation to work.  It is important that
 452  * the number be just large enough, but not so large as to reduce the
 453  * efficacy of the buffer.  The "+32" is just to keep the code working
 454  * in case somebody counts wrong.
 455  */
 456 #define __GLX_BUFFER_LIMIT_SIZE (__GLX_MAX_SMALL_RENDER_CMD_SIZE + 32)
 457
 458 /**
 459  * This implementation uses a smaller threshold for switching
 460  * to the RenderLarge protocol than the protcol requires so that
 461  * large copies don't occur.
 462  */
 463 #define __GLX_RENDER_CMD_SIZE_LIMIT     4096
 464
 465 /**
 466  * One of these records exists per screen of the display.  It contains
 467  * a pointer to the config data for that screen (if the screen supports GL).
 468  */
 469 struct __GLXscreenConfigsRec {
 470     /**
 471      * GLX extension string reported by the X-server.
 472      */
 473     const char *serverGLXexts;
 474
 475     /**
 476      * GLX extension string to be reported to applications.  This is the
 477      * set of extensions that the application can actually use.
 478      */
 479     char *effectiveGLXexts;
 480
 481 #ifdef GLX_DIRECT_RENDERING
 482     /**
 483      * Per screen direct rendering interface functions and data.
 484      */
 485     __DRIscreen *__driScreen;
 486     const __DRIcoreExtension *core;
 487     const __DRIlegacyExtension *legacy;
 488     const __DRIswrastExtension *swrast;
 489     const __DRIdri2Extension *dri2;
 490     __glxHashTable *drawHash;
 491     Display *dpy;
 492     int scr, fd;
 493     void *driver;
 494
 495     __GLXDRIscreen *driScreen;
 496
 497 #ifdef __DRI_COPY_SUB_BUFFER
 498     const __DRIcopySubBufferExtension *driCopySubBuffer;
 499 #endif
 500
 501 #ifdef __DRI_SWAP_CONTROL
 502     const __DRIswapControlExtension *swapControl;
 503 #endif
 504
 505 #ifdef __DRI_ALLOCATE
 506     const __DRIallocateExtension *allocate;
 507 #endif
 508
 509 #ifdef __DRI_FRAME_TRACKING
 510     const __DRIframeTrackingExtension *frameTracking;
 511 #endif
 512
 513 #ifdef __DRI_MEDIA_STREAM_COUNTER
 514     const __DRImediaStreamCounterExtension *msc;
 515 #endif
 516
 517 #ifdef __DRI_TEX_BUFFER
 518     const __DRItexBufferExtension *texBuffer;
 519 #endif
 520
 521 #endif
 522
 523     /**
 524      * Linked list of glx visuals and  fbconfigs for this screen.
 525      */
 526     __GLcontextModes *visuals, *configs;
 527
 528     /**
 529      * Per-screen dynamic GLX extension tracking.  The \c direct_support
 530      * field only contains enough bits for 64 extensions.  Should libGL
 531      * ever need to track more than 64 GLX extensions, we can safely grow
 532      * this field.  The \c __GLXscreenConfigs structure is not used outside
 533      * libGL.
 534      */
 535     /*@{*/
 536     unsigned char direct_support[8];
 537     GLboolean ext_list_first_time;
 538     /*@}*/
 539
 540 };
 541
 542 /**
 543  * Per display private data.  One of these records exists for each display
 544  * that is using the OpenGL (GLX) extension.
 545  */
 546 struct __GLXdisplayPrivateRec {
 547     /**
 548      * Back pointer to the display
 549      */
 550     Display *dpy;
 551
 552     /**
 553      * The \c majorOpcode is common to all connections to the same server.
 554      * It is also copied into the context structure.
 555      */
 556     int majorOpcode;
 557
 558     /**
 559      * \name Server Version
 560      *
 561      * Major and minor version returned by the server during initialization.
 562      */
 563     /*@{*/
 564     int majorVersion, minorVersion;
 565     /*@}*/
 566
 567     /**
 568      * \name Storage for the servers GLX vendor and versions strings.
 569      *
 570      * These are the same for all screens on this display. These fields will
 571      * be filled in on demand.
 572      */
 573     /*@{*/
 574     const char *serverGLXvendor;
 575     const char *serverGLXversion;
 576     /*@}*/
 577
 578     /**
 579      * Configurations of visuals for all screens on this display.
 580      * Also, per screen data which now includes the server \c GLX_EXTENSION
 581      * string.
 582      */
 583     __GLXscreenConfigs *screenConfigs;
 584
 585 #ifdef GLX_DIRECT_RENDERING
 586     /**
 587      * Per display direct rendering interface functions and data.
 588      */
 589     __GLXDRIdisplay *driswDisplay;
 590     __GLXDRIdisplay *driDisplay;
 591     __GLXDRIdisplay *dri2Display;
 592 #endif
 593 };
 594
 595
 596 extern GLubyte *__glXFlushRenderBuffer(__GLXcontext*, GLubyte*);
 597
 598 extern void __glXSendLargeChunk(__GLXcontext *gc, GLint requestNumber,
 599                                 GLint totalRequests,
 600                                 const GLvoid * data, GLint dataLen);
 601
 602 extern void __glXSendLargeCommand(__GLXcontext *, const GLvoid *, GLint,
 603                                   const GLvoid *, GLint);
 604
 605 /* Initialize the GLX extension for dpy */
 606 extern __GLXdisplayPrivate *__glXInitialize(Display*);
 607
 608 extern void __glXPreferEGL(int state);
 609
 610 /************************************************************************/
 611
 612 extern int __glXDebug;
 613
 614 /* This is per-thread storage in an MT environment */
 615 #if defined( USE_XTHREADS ) || defined( PTHREADS )
 616
 617 extern void __glXSetCurrentContext(__GLXcontext *c);
 618
 619 # if defined( GLX_USE_TLS )
 620
 621 extern __thread void * __glX_tls_Context
 622     __attribute__((tls_model("initial-exec")));
 623
 624 #  define __glXGetCurrentContext()      __glX_tls_Context
 625
 626 # else
 627
 628 extern __GLXcontext *__glXGetCurrentContext(void);
 629
 630 # endif /* defined( GLX_USE_TLS ) */
 631
 632 #else
 633
 634 extern __GLXcontext *__glXcurrentContext;
 635 #define __glXGetCurrentContext()        __glXcurrentContext
 636 #define __glXSetCurrentContext(gc)      __glXcurrentContext = gc
 637
 638 #endif /* defined( USE_XTHREADS ) || defined( PTHREADS ) */
 639
 640 extern void __glXSetCurrentContextNull(void);
 641
 642 extern void __glXFreeContext(__GLXcontext*);
 643
 644
 645 /*
 646 ** Global lock for all threads in this address space using the GLX
 647 ** extension
 648 */
 649 #if defined( USE_XTHREADS )
 650 extern xmutex_rec __glXmutex;
 651 #define __glXLock()    xmutex_lock(&__glXmutex)
 652 #define __glXUnlock()  xmutex_unlock(&__glXmutex)
 653 #elif defined( PTHREADS )
 654 extern pthread_mutex_t __glXmutex;
 655 #define __glXLock()    pthread_mutex_lock(&__glXmutex)
 656 #define __glXUnlock()  pthread_mutex_unlock(&__glXmutex)
 657 #else
 658 #define __glXLock()
 659 #define __glXUnlock()
 660 #endif
 661
 662 /*
 663 ** Setup for a command.  Initialize the extension for dpy if necessary.
 664 */
 665 extern CARD8 __glXSetupForCommand(Display *dpy);
 666
 667 /************************************************************************/
 668
 669 /*
 670 ** Data conversion and packing support.
 671 */
 672
 673 extern const GLuint __glXDefaultPixelStore[9];
 674
 675 /* Send an image to the server using RenderLarge. */
 676 extern void __glXSendLargeImage(__GLXcontext *gc, GLint compsize, GLint dim,
 677     GLint width, GLint height, GLint depth, GLenum format, GLenum type,
 678     const GLvoid *src, GLubyte *pc, GLubyte *modes);
 679
 680 /* Return the size, in bytes, of some pixel data */
 681 extern GLint __glImageSize(GLint, GLint, GLint, GLenum, GLenum, GLenum);
 682
 683 /* Return the number of elements per group of a specified format*/
 684 extern GLint __glElementsPerGroup(GLenum format, GLenum type);
 685
 686 /* Return the number of bytes per element, based on the element type (other
 687 ** than GL_BITMAP).
 688 */
 689 extern GLint __glBytesPerElement(GLenum type);
 690
 691 /*
 692 ** Fill the transport buffer with the data from the users buffer,
 693 ** applying some of the pixel store modes (unpack modes) to the data
 694 ** first.  As a side effect of this call, the "modes" field is
 695 ** updated to contain the modes needed by the server to decode the
 696 ** sent data.
 697 */
 698 extern void __glFillImage(__GLXcontext*, GLint, GLint, GLint, GLint, GLenum,
 699                           GLenum, const GLvoid*, GLubyte*, GLubyte*);
 700
 701 /* Copy map data with a stride into a packed buffer */
 702 extern void __glFillMap1f(GLint, GLint, GLint, const GLfloat *, GLubyte *);
 703 extern void __glFillMap1d(GLint, GLint, GLint, const GLdouble *, GLubyte *);
 704 extern void __glFillMap2f(GLint, GLint, GLint, GLint, GLint,
 705                           const GLfloat *, GLfloat *);
 706 extern void __glFillMap2d(GLint, GLint, GLint, GLint, GLint,
 707                           const GLdouble *, GLdouble *);
 708
 709 /*
 710 ** Empty an image out of the reply buffer into the clients memory applying
 711 ** the pack modes to pack back into the clients requested format.
 712 */
 713 extern void __glEmptyImage(__GLXcontext*, GLint, GLint, GLint, GLint, GLenum,
 714                            GLenum, const GLubyte *, GLvoid *);
 715
 716
 717 /*
 718 ** Allocate and Initialize Vertex Array client state, and free.
 719 */
 720 extern void __glXInitVertexArrayState(__GLXcontext *);
 721 extern void __glXFreeVertexArrayState(__GLXcontext *);
 722
 723 /*
 724 ** Inform the Server of the major and minor numbers and of the client
 725 ** libraries extension string.
 726 */
 727 extern void __glXClientInfo (  Display *dpy, int opcode );
 728
 729 /************************************************************************/
 730
 731 /*
 732 ** Declarations that should be in Xlib
 733 */
 734 #ifdef __GL_USE_OUR_PROTOTYPES
 735 extern void _XFlush(Display*);
 736 extern Status _XReply(Display*, xReply*, int, Bool);
 737 extern void _XRead(Display*, void*, long);
 738 extern void _XSend(Display*, const void*, long);
 739 #endif
 740
 741
 742 extern void __glXInitializeVisualConfigFromTags( __GLcontextModes *config,
 743     int count, const INT32 *bp, Bool tagged_only, Bool fbconfig_style_tags );
 744
 745 extern char * __glXGetStringFromServer( Display * dpy, int opcode,
 746     CARD32 glxCode, CARD32 for_whom, CARD32 name );
 747
 748 extern char *__glXstrdup(const char *str);
 749
 750
 751 extern const char __glXGLClientVersion[];
 752 extern const char __glXGLClientExtensions[];
 753
 754 /* Get the unadjusted system time */
 755 extern int __glXGetUST( int64_t * ust );
 756
 757 extern GLboolean __glXGetMscRateOML(Display * dpy, GLXDrawable drawable,
 758                                     int32_t * numerator, int32_t * denominator);
 759
 760 #ifdef GLX_DIRECT_RENDERING
 761 GLboolean
 762 __driGetMscRateOML(__DRIdrawable *draw,
 763                    int32_t *numerator, int32_t *denominator, void *private);
 764 #endif
 765
 766 #endif /* !__GLX_client_h__ */