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     /**
 119      * Method to destroy the private DRI display data.
 120      */
 121    void (*destroyDisplay) (__GLXDRIdisplay * display);
 122
 123    __GLXDRIscreen *(*createScreen) (__GLXscreenConfigs * psc, int screen,
 124                                     __GLXdisplayPrivate * priv);
 125 };
 126
 127 struct __GLXDRIscreenRec
 128 {
 129
 130    void (*destroyScreen) (__GLXscreenConfigs * psc);
 131
 132    __GLXDRIcontext *(*createContext) (__GLXscreenConfigs * psc,
 133                                       const __GLcontextModes * mode,
 134                                       GLXContext gc,
 135                                       GLXContext shareList, int renderType);
 136
 137    __GLXDRIdrawable *(*createDrawable) (__GLXscreenConfigs * psc,
 138                                         XID drawable,
 139                                         GLXDrawable glxDrawable,
 140                                         const __GLcontextModes * modes);
 141
 142    void (*swapBuffers) (__GLXDRIdrawable * pdraw);
 143 };
 144
 145 struct __GLXDRIcontextRec
 146 {
 147    void (*destroyContext) (__GLXDRIcontext * context,
 148                            __GLXscreenConfigs * psc, Display * dpy);
 149      Bool(*bindContext) (__GLXDRIcontext * context, __GLXDRIdrawable * pdraw,
 150                          __GLXDRIdrawable * pread);
 151
 152    void (*unbindContext) (__GLXDRIcontext * context);
 153 };
 154
 155 struct __GLXDRIdrawableRec
 156 {
 157    void (*destroyDrawable) (__GLXDRIdrawable * drawable);
 158
 159    XID xDrawable;
 160    XID drawable;
 161    __GLXscreenConfigs *psc;
 162    GLenum textureTarget;
 163    __DRIdrawable *driDrawable;
 164 };
 165
 166 /*
 167 ** Function to create and DRI display data and initialize the display
 168 ** dependent methods.
 169 */
 170 extern __GLXDRIdisplay *driswCreateDisplay(Display * dpy);
 171 extern __GLXDRIdisplay *driCreateDisplay(Display * dpy);
 172 extern __GLXDRIdisplay *dri2CreateDisplay(Display * dpy);
 173
 174 extern void DRI_glXUseXFont(Font font, int first, int count, int listbase);
 175
 176 /*
 177 ** Functions to obtain driver configuration information from a direct
 178 ** rendering client application
 179 */
 180 extern const char *glXGetScreenDriver(Display * dpy, int scrNum);
 181
 182 extern const char *glXGetDriverConfig(const char *driverName);
 183
 184 #endif
 185
 186 /************************************************************************/
 187
 188 #define __GL_CLIENT_ATTRIB_STACK_DEPTH 16
 189
 190 typedef struct __GLXpixelStoreModeRec
 191 {
 192    GLboolean swapEndian;
 193    GLboolean lsbFirst;
 194    GLuint rowLength;
 195    GLuint imageHeight;
 196    GLuint imageDepth;
 197    GLuint skipRows;
 198    GLuint skipPixels;
 199    GLuint skipImages;
 200    GLuint alignment;
 201 } __GLXpixelStoreMode;
 202
 203
 204 typedef struct __GLXattributeRec
 205 {
 206    GLuint mask;
 207
 208     /**
 209      * Pixel storage state.  Most of the pixel store mode state is kept
 210      * here and used by the client code to manage the packing and
 211      * unpacking of data sent to/received from the server.
 212      */
 213    __GLXpixelStoreMode storePack, storeUnpack;
 214
 215     /**
 216      * Is EXT_vertex_array / GL 1.1 DrawArrays protocol specifically
 217      * disabled?
 218      */
 219    GLboolean NoDrawArraysProtocol;
 220
 221     /**
 222      * Vertex Array storage state.  The vertex array component
 223      * state is stored here and is used to manage the packing of
 224      * DrawArrays data sent to the server.
 225      */
 226    struct array_state_vector *array_state;
 227 } __GLXattribute;
 228
 229 typedef struct __GLXattributeMachineRec
 230 {
 231    __GLXattribute *stack[__GL_CLIENT_ATTRIB_STACK_DEPTH];
 232    __GLXattribute **stackPointer;
 233 } __GLXattributeMachine;
 234
 235 /**
 236  * GLX state that needs to be kept on the client.  One of these records
 237  * exist for each context that has been made current by this client.
 238  */
 239 struct __GLXcontextRec
 240 {
 241     /**
 242      * \name Drawing command buffer.
 243      *
 244      * Drawing commands are packed into this buffer before being sent as a
 245      * single GLX protocol request.  The buffer is sent when it overflows or
 246      * is flushed by \c __glXFlushRenderBuffer.  \c pc is the next location
 247      * in the buffer to be filled.  \c limit is described above in the buffer
 248      * slop discussion.
 249      *
 250      * Commands that require large amounts of data to be transfered will
 251      * also use this buffer to hold a header that describes the large
 252      * command.
 253      *
 254      * These must be the first 6 fields since they are static initialized
 255      * in the dummy context in glxext.c
 256      */
 257    /*@{ */
 258    GLubyte *buf;
 259    GLubyte *pc;
 260    GLubyte *limit;
 261    GLubyte *bufEnd;
 262    GLint bufSize;
 263    /*@} */
 264
 265     /**
 266      * The XID of this rendering context.  When the context is created a
 267      * new XID is allocated.  This is set to None when the context is
 268      * destroyed but is still current to some thread. In this case the
 269      * context will be freed on next MakeCurrent.
 270      */
 271    XID xid;
 272
 273     /**
 274      * The XID of the \c shareList context.
 275      */
 276    XID share_xid;
 277
 278     /**
 279      * Screen number.
 280      */
 281    GLint screen;
 282    __GLXscreenConfigs *psc;
 283
 284     /**
 285      * \c GL_TRUE if the context was created with ImportContext, which
 286      * means the server-side context was created by another X client.
 287      */
 288    GLboolean imported;
 289
 290     /**
 291      * The context tag returned by MakeCurrent when this context is made
 292      * current. This tag is used to identify the context that a thread has
 293      * current so that proper server context management can be done.  It is
 294      * used for all context specific commands (i.e., \c Render, \c RenderLarge,
 295      * \c WaitX, \c WaitGL, \c UseXFont, and \c MakeCurrent (for the old
 296      * context)).
 297      */
 298    GLXContextTag currentContextTag;
 299
 300     /**
 301      * \name Rendering mode
 302      *
 303      * The rendering mode is kept on the client as well as the server.
 304      * When \c glRenderMode is called, the buffer associated with the
 305      * previous rendering mode (feedback or select) is filled.
 306      */
 307    /*@{ */
 308    GLenum renderMode;
 309    GLfloat *feedbackBuf;
 310    GLuint *selectBuf;
 311    /*@} */
 312
 313     /**
 314      * This is \c GL_TRUE if the pixel unpack modes are such that an image
 315      * can be unpacked from the clients memory by just copying.  It may
 316      * still be true that the server will have to do some work.  This
 317      * just promises that a straight copy will fetch the correct bytes.
 318      */
 319    GLboolean fastImageUnpack;
 320
 321     /**
 322      * Fill newImage with the unpacked form of \c oldImage getting it
 323      * ready for transport to the server.
 324      */
 325    void (*fillImage) (__GLXcontext *, GLint, GLint, GLint, GLint, GLenum,
 326                       GLenum, const GLvoid *, GLubyte *, GLubyte *);
 327
 328     /**
 329      * Client side attribs.
 330      */
 331    __GLXattributeMachine attributes;
 332
 333     /**
 334      * Client side error code.  This is set when client side gl API
 335      * routines need to set an error because of a bad enumerant or
 336      * running out of memory, etc.
 337      */
 338    GLenum error;
 339
 340     /**
 341      * Whether this context does direct rendering.
 342      */
 343    Bool isDirect;
 344
 345     /**
 346      * \c dpy of current display for this context.  Will be \c NULL if not
 347      * current to any display, or if this is the "dummy context".
 348      */
 349    Display *currentDpy;
 350
 351     /**
 352      * The current drawable for this context.  Will be None if this
 353      * context is not current to any drawable.  currentReadable is below.
 354      */
 355    GLXDrawable currentDrawable;
 356
 357     /**
 358      * \name GL Constant Strings
 359      *
 360      * Constant strings that describe the server implementation
 361      * These pertain to GL attributes, not to be confused with
 362      * GLX versioning attributes.
 363      */
 364    /*@{ */
 365    GLubyte *vendor;
 366    GLubyte *renderer;
 367    GLubyte *version;
 368    GLubyte *extensions;
 369    /*@} */
 370
 371     /**
 372      * Record the dpy this context was created on for later freeing
 373      */
 374    Display *createDpy;
 375
 376     /**
 377      * Maximum small render command size.  This is the smaller of 64k and
 378      * the size of the above buffer.
 379      */
 380    GLint maxSmallRenderCommandSize;
 381
 382     /**
 383      * Major opcode for the extension.  Copied here so a lookup isn't
 384      * needed.
 385      */
 386    GLint majorOpcode;
 387
 388     /**
 389      * Pointer to the mode used to create this context.
 390      */
 391    const __GLcontextModes *mode;
 392
 393 #ifdef GLX_DIRECT_RENDERING
 394    __GLXDRIcontext *driContext;
 395    __DRIcontext *__driContext;
 396 #endif
 397
 398     /**
 399      * The current read-drawable for this context.  Will be None if this
 400      * context is not current to any drawable.
 401      *
 402      * \since Internal API version 20030606.
 403      */
 404    GLXDrawable currentReadable;
 405
 406    /**
 407     * Pointer to client-state data that is private to libGL.  This is only
 408     * used for indirect rendering contexts.
 409     *
 410     * No internal API version change was made for this change.  Client-side
 411     * drivers should NEVER use this data or even care that it exists.
 412     */
 413    void *client_state_private;
 414
 415    /**
 416     * Stored value for \c glXQueryContext attribute \c GLX_RENDER_TYPE.
 417     */
 418    int renderType;
 419
 420    /**
 421     * \name Raw server GL version
 422     *
 423     * True core GL version supported by the server.  This is the raw value
 424     * returned by the server, and it may not reflect what is actually
 425     * supported (or reported) by the client-side library.
 426     */
 427    /*@{ */
 428    int server_major;        /**< Major version number. */
 429    int server_minor;        /**< Minor version number. */
 430    /*@} */
 431
 432    char gl_extension_bits[__GL_EXT_BYTES];
 433 };
 434
 435 #define __glXSetError(gc,code) \
 436     if (!(gc)->error) {        \
 437         (gc)->error = code;    \
 438     }
 439
 440 extern void __glFreeAttributeState(__GLXcontext *);
 441
 442 /************************************************************************/
 443
 444 /**
 445  * The size of the largest drawing command known to the implementation
 446  * that will use the GLXRender GLX command.  In this case it is
 447  * \c glPolygonStipple.
 448  */
 449 #define __GLX_MAX_SMALL_RENDER_CMD_SIZE 156
 450
 451 /**
 452  * To keep the implementation fast, the code uses a "limit" pointer
 453  * to determine when the drawing command buffer is too full to hold
 454  * another fixed size command.  This constant defines the amount of
 455  * space that must always be available in the drawing command buffer
 456  * at all times for the implementation to work.  It is important that
 457  * the number be just large enough, but not so large as to reduce the
 458  * efficacy of the buffer.  The "+32" is just to keep the code working
 459  * in case somebody counts wrong.
 460  */
 461 #define __GLX_BUFFER_LIMIT_SIZE (__GLX_MAX_SMALL_RENDER_CMD_SIZE + 32)
 462
 463 /**
 464  * This implementation uses a smaller threshold for switching
 465  * to the RenderLarge protocol than the protcol requires so that
 466  * large copies don't occur.
 467  */
 468 #define __GLX_RENDER_CMD_SIZE_LIMIT     4096
 469
 470 /**
 471  * One of these records exists per screen of the display.  It contains
 472  * a pointer to the config data for that screen (if the screen supports GL).
 473  */
 474 struct __GLXscreenConfigsRec
 475 {
 476     /**
 477      * GLX extension string reported by the X-server.
 478      */
 479    const char *serverGLXexts;
 480
 481     /**
 482      * GLX extension string to be reported to applications.  This is the
 483      * set of extensions that the application can actually use.
 484      */
 485    char *effectiveGLXexts;
 486
 487 #ifdef GLX_DIRECT_RENDERING
 488     /**
 489      * Per screen direct rendering interface functions and data.
 490      */
 491    __DRIscreen *__driScreen;
 492    const __DRIcoreExtension *core;
 493    const __DRIlegacyExtension *legacy;
 494    const __DRIswrastExtension *swrast;
 495    const __DRIdri2Extension *dri2;
 496    __glxHashTable *drawHash;
 497    Display *dpy;
 498    int scr, fd;
 499    void *driver;
 500
 501    __GLXDRIscreen *driScreen;
 502
 503 #ifdef __DRI_COPY_SUB_BUFFER
 504    const __DRIcopySubBufferExtension *copySubBuffer;
 505 #endif
 506
 507 #ifdef __DRI_SWAP_CONTROL
 508    const __DRIswapControlExtension *swapControl;
 509 #endif
 510
 511 #ifdef __DRI_ALLOCATE
 512    const __DRIallocateExtension *allocate;
 513 #endif
 514
 515 #ifdef __DRI_FRAME_TRACKING
 516    const __DRIframeTrackingExtension *frameTracking;
 517 #endif
 518
 519 #ifdef __DRI_MEDIA_STREAM_COUNTER
 520    const __DRImediaStreamCounterExtension *msc;
 521 #endif
 522
 523 #ifdef __DRI_TEX_BUFFER
 524    const __DRItexBufferExtension *texBuffer;
 525 #endif
 526
 527 #endif
 528
 529     /**
 530      * Linked list of glx visuals and  fbconfigs for this screen.
 531      */
 532    __GLcontextModes *visuals, *configs;
 533
 534     /**
 535      * Per-screen dynamic GLX extension tracking.  The \c direct_support
 536      * field only contains enough bits for 64 extensions.  Should libGL
 537      * ever need to track more than 64 GLX extensions, we can safely grow
 538      * this field.  The \c __GLXscreenConfigs structure is not used outside
 539      * libGL.
 540      */
 541    /*@{ */
 542    unsigned char direct_support[8];
 543    GLboolean ext_list_first_time;
 544    /*@} */
 545
 546 };
 547
 548 /**
 549  * Per display private data.  One of these records exists for each display
 550  * that is using the OpenGL (GLX) extension.
 551  */
 552 struct __GLXdisplayPrivateRec
 553 {
 554     /**
 555      * Back pointer to the display
 556      */
 557    Display *dpy;
 558
 559     /**
 560      * The \c majorOpcode is common to all connections to the same server.
 561      * It is also copied into the context structure.
 562      */
 563    int majorOpcode;
 564
 565     /**
 566      * \name Server Version
 567      *
 568      * Major and minor version returned by the server during initialization.
 569      */
 570    /*@{ */
 571    int majorVersion, minorVersion;
 572    /*@} */
 573
 574     /**
 575      * \name Storage for the servers GLX vendor and versions strings.
 576      *
 577      * These are the same for all screens on this display. These fields will
 578      * be filled in on demand.
 579      */
 580    /*@{ */
 581    const char *serverGLXvendor;
 582    const char *serverGLXversion;
 583    /*@} */
 584
 585     /**
 586      * Configurations of visuals for all screens on this display.
 587      * Also, per screen data which now includes the server \c GLX_EXTENSION
 588      * string.
 589      */
 590    __GLXscreenConfigs *screenConfigs;
 591
 592 #ifdef GLX_DIRECT_RENDERING
 593     /**
 594      * Per display direct rendering interface functions and data.
 595      */
 596    __GLXDRIdisplay *driswDisplay;
 597    __GLXDRIdisplay *driDisplay;
 598    __GLXDRIdisplay *dri2Display;
 599 #endif
 600 };
 601
 602
 603 extern GLubyte *__glXFlushRenderBuffer(__GLXcontext *, GLubyte *);
 604
 605 extern void __glXSendLargeChunk(__GLXcontext * gc, GLint requestNumber,
 606                                 GLint totalRequests,
 607                                 const GLvoid * data, GLint dataLen);
 608
 609 extern void __glXSendLargeCommand(__GLXcontext *, const GLvoid *, GLint,
 610                                   const GLvoid *, GLint);
 611
 612 /* Initialize the GLX extension for dpy */
 613 extern __GLXdisplayPrivate *__glXInitialize(Display *);
 614
 615 extern void __glXPreferEGL(int state);
 616
 617 /************************************************************************/
 618
 619 extern int __glXDebug;
 620
 621 /* This is per-thread storage in an MT environment */
 622 #if defined( USE_XTHREADS ) || defined( PTHREADS )
 623
 624 extern void __glXSetCurrentContext(__GLXcontext * c);
 625
 626 # if defined( GLX_USE_TLS )
 627
 628 extern __thread void *__glX_tls_Context
 629    __attribute__ ((tls_model("initial-exec")));
 630
 631 #  define __glXGetCurrentContext()      __glX_tls_Context
 632
 633 # else
 634
 635 extern __GLXcontext *__glXGetCurrentContext(void);
 636
 637 # endif /* defined( GLX_USE_TLS ) */
 638
 639 #else
 640
 641 extern __GLXcontext *__glXcurrentContext;
 642 #define __glXGetCurrentContext()        __glXcurrentContext
 643 #define __glXSetCurrentContext(gc)      __glXcurrentContext = gc
 644
 645 #endif /* defined( USE_XTHREADS ) || defined( PTHREADS ) */
 646
 647 extern void __glXSetCurrentContextNull(void);
 648
 649 extern void __glXFreeContext(__GLXcontext *);
 650
 651
 652 /*
 653 ** Global lock for all threads in this address space using the GLX
 654 ** extension
 655 */
 656 #if defined( USE_XTHREADS )
 657 extern xmutex_rec __glXmutex;
 658 #define __glXLock()    xmutex_lock(&__glXmutex)
 659 #define __glXUnlock()  xmutex_unlock(&__glXmutex)
 660 #elif defined( PTHREADS )
 661 extern pthread_mutex_t __glXmutex;
 662 #define __glXLock()    pthread_mutex_lock(&__glXmutex)
 663 #define __glXUnlock()  pthread_mutex_unlock(&__glXmutex)
 664 #else
 665 #define __glXLock()
 666 #define __glXUnlock()
 667 #endif
 668
 669 /*
 670 ** Setup for a command.  Initialize the extension for dpy if necessary.
 671 */
 672 extern CARD8 __glXSetupForCommand(Display * dpy);
 673
 674 /************************************************************************/
 675
 676 /*
 677 ** Data conversion and packing support.
 678 */
 679
 680 extern const GLuint __glXDefaultPixelStore[9];
 681
 682 /* Send an image to the server using RenderLarge. */
 683 extern void __glXSendLargeImage(__GLXcontext * gc, GLint compsize, GLint dim,
 684                                 GLint width, GLint height, GLint depth,
 685                                 GLenum format, GLenum type,
 686                                 const GLvoid * src, GLubyte * pc,
 687                                 GLubyte * modes);
 688
 689 /* Return the size, in bytes, of some pixel data */
 690 extern GLint __glImageSize(GLint, GLint, GLint, GLenum, GLenum, GLenum);
 691
 692 /* Return the number of elements per group of a specified format*/
 693 extern GLint __glElementsPerGroup(GLenum format, GLenum type);
 694
 695 /* Return the number of bytes per element, based on the element type (other
 696 ** than GL_BITMAP).
 697 */
 698 extern GLint __glBytesPerElement(GLenum type);
 699
 700 /*
 701 ** Fill the transport buffer with the data from the users buffer,
 702 ** applying some of the pixel store modes (unpack modes) to the data
 703 ** first.  As a side effect of this call, the "modes" field is
 704 ** updated to contain the modes needed by the server to decode the
 705 ** sent data.
 706 */
 707 extern void __glFillImage(__GLXcontext *, GLint, GLint, GLint, GLint, GLenum,
 708                           GLenum, const GLvoid *, GLubyte *, GLubyte *);
 709
 710 /* Copy map data with a stride into a packed buffer */
 711 extern void __glFillMap1f(GLint, GLint, GLint, const GLfloat *, GLubyte *);
 712 extern void __glFillMap1d(GLint, GLint, GLint, const GLdouble *, GLubyte *);
 713 extern void __glFillMap2f(GLint, GLint, GLint, GLint, GLint,
 714                           const GLfloat *, GLfloat *);
 715 extern void __glFillMap2d(GLint, GLint, GLint, GLint, GLint,
 716                           const GLdouble *, GLdouble *);
 717
 718 /*
 719 ** Empty an image out of the reply buffer into the clients memory applying
 720 ** the pack modes to pack back into the clients requested format.
 721 */
 722 extern void __glEmptyImage(__GLXcontext *, GLint, GLint, GLint, GLint, GLenum,
 723                            GLenum, const GLubyte *, GLvoid *);
 724
 725
 726 /*
 727 ** Allocate and Initialize Vertex Array client state, and free.
 728 */
 729 extern void __glXInitVertexArrayState(__GLXcontext *);
 730 extern void __glXFreeVertexArrayState(__GLXcontext *);
 731
 732 /*
 733 ** Inform the Server of the major and minor numbers and of the client
 734 ** libraries extension string.
 735 */
 736 extern void __glXClientInfo(Display * dpy, int opcode);
 737
 738 /************************************************************************/
 739
 740 /*
 741 ** Declarations that should be in Xlib
 742 */
 743 #ifdef __GL_USE_OUR_PROTOTYPES
 744 extern void _XFlush(Display *);
 745 extern Status _XReply(Display *, xReply *, int, Bool);
 746 extern void _XRead(Display *, void *, long);
 747 extern void _XSend(Display *, const void *, long);
 748 #endif
 749
 750
 751 extern void __glXInitializeVisualConfigFromTags(__GLcontextModes * config,
 752                                                 int count, const INT32 * bp,
 753                                                 Bool tagged_only,
 754                                                 Bool fbconfig_style_tags);
 755
 756 extern char *__glXGetStringFromServer(Display * dpy, int opcode,
 757                                       CARD32 glxCode, CARD32 for_whom,
 758                                       CARD32 name);
 759
 760 extern char *__glXstrdup(const char *str);
 761
 762
 763 extern const char __glXGLClientVersion[];
 764 extern const char __glXGLClientExtensions[];
 765
 766 /* Get the unadjusted system time */
 767 extern int __glXGetUST(int64_t * ust);
 768
 769 extern GLboolean __glXGetMscRateOML(Display * dpy, GLXDrawable drawable,
 770                                     int32_t * numerator,
 771                                     int32_t * denominator);
 772
 773 #ifdef GLX_DIRECT_RENDERING
 774 GLboolean
 775 __driGetMscRateOML(__DRIdrawable * draw,
 776                    int32_t * numerator, int32_t * denominator, void *private);
 777 #endif
 778
 779 #endif /* !__GLX_client_h__ */