src/glx/x11/glxclient.h

   1 /*
   2  * SGI FREE SOFTWARE LICENSE B (Version 2.0, Sept. 18, 2008)
   3  * Copyright (C) 1991-2000 Silicon Graphics, Inc. All Rights Reserved.
   4  *
   5  * Permission is hereby granted, free of charge, to any person obtaining a
   6  * copy of this software and associated documentation files (the "Software"),
   7  * to deal in the Software without restriction, including without limitation
   8  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   9  * and/or sell copies of the Software, and to permit persons to whom the
  10  * Software is furnished to do so, subject to the following conditions:
  11  *
  12  * The above copyright notice including the dates of first publication and
  13  * either this permission notice or a reference to
  14  * http://oss.sgi.com/projects/FreeB/
  15  * shall be included in all copies or substantial portions of the Software.
  16  *
  17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  18  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  19  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
  20  * SILICON GRAPHICS, INC. BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
  21  * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
  22  * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  23  * SOFTWARE.
  24  *
  25  * Except as contained in this notice, the name of Silicon Graphics, Inc.
  26  * shall not be used in advertising or otherwise to promote the sale, use or
  27  * other dealings in this Software without prior written authorization from
  28  * Silicon Graphics, Inc.
  29  */
  30
  31 /**
  32  * \file glxclient.h
  33  * Direct rendering support added by Precision Insight, Inc.
  34  *
  35  * \author Kevin E. Martin <kevin@precisioninsight.com>
  36  */
  37
  38 #ifndef _GLX_client_h_
  39 #define _GLX_client_h_
  40 #define NEED_REPLIES
  41 #define NEED_EVENTS
  42 #include <X11/Xproto.h>
  43 #include <X11/Xlibint.h>
  44 #define GLX_GLXEXT_PROTOTYPES
  45 #include <GL/glx.h>
  46 #include <GL/glxext.h>
  47 #include <string.h>
  48 #include <stdlib.h>
  49 #include <stdio.h>
  50 #ifdef WIN32
  51 #include <stdint.h>
  52 #endif
  53 #include "GL/glxint.h"
  54 #include "GL/glxproto.h"
  55 #include "GL/internal/glcore.h"
  56 #include "glapi/glapitable.h"
  57 #include "glxhash.h"
  58 #if defined( USE_XTHREADS )
  59 # include <X11/Xthreads.h>
  60 #elif defined( PTHREADS )
  61 # include <pthread.h>
  62 #endif
  63
  64 #include "glxextensions.h"
  65
  66
  67 /* If we build the library with gcc's -fvisibility=hidden flag, we'll
  68  * use the PUBLIC macro to mark functions that are to be exported.
  69  *
  70  * We also need to define a USED attribute, so the optimizer doesn't
  71  * inline a static function that we later use in an alias. - ajax
  72  */
  73 #if defined(__GNUC__) && (__GNUC__ * 100 + __GNUC_MINOR__) >= 303
  74 #  define PUBLIC __attribute__((visibility("default")))
  75 #  define USED __attribute__((used))
  76 #else
  77 #  define PUBLIC
  78 #  define USED
  79 #endif
  80
  81
  82
  83 #define GLX_MAJOR_VERSION       1       /* current version numbers */
  84 #define GLX_MINOR_VERSION       4
  85
  86 #define __GLX_MAX_TEXTURE_UNITS 32
  87
  88 typedef struct __GLXscreenConfigsRec __GLXscreenConfigs;
  89 typedef struct __GLXcontextRec __GLXcontext;
  90 typedef struct __GLXdrawableRec __GLXdrawable;
  91 typedef struct __GLXdisplayPrivateRec __GLXdisplayPrivate;
  92 typedef struct _glapi_table __GLapi;
  93
  94 /************************************************************************/
  95
  96 #ifdef GLX_DIRECT_RENDERING
  97
  98 #define containerOf(ptr, type, member)                  \
  99     (type *)( (char *)ptr - offsetof(type,member) )
 100
 101 #include <GL/internal/dri_interface.h>
 102
 103
 104 /**
 105  * Display dependent methods.  This structure is initialized during the
 106  * \c driCreateDisplay call.
 107  */
 108 typedef struct __GLXDRIdisplayRec __GLXDRIdisplay;
 109 typedef struct __GLXDRIscreenRec __GLXDRIscreen;
 110 typedef struct __GLXDRIdrawableRec __GLXDRIdrawable;
 111 typedef struct __GLXDRIcontextRec __GLXDRIcontext;
 112
 113 #include "glxextensions.h"
 114
 115 struct __GLXDRIdisplayRec {
 116     /**
 117      * Method to destroy the private DRI display data.
 118      */
 119     void (*destroyDisplay)(__GLXDRIdisplay *display);
 120
 121     __GLXDRIscreen *(*createScreen)(__GLXscreenConfigs *psc, int screen,
 122                                     __GLXdisplayPrivate *priv);
 123 };
 124
 125 struct __GLXDRIscreenRec {
 126
 127     void (*destroyScreen)(__GLXscreenConfigs *psc);
 128
 129     __GLXDRIcontext *(*createContext)(__GLXscreenConfigs *psc,
 130                                       const __GLcontextModes *mode,
 131                                       GLXContext gc,
 132                                       GLXContext shareList, int renderType);
 133
 134     __GLXDRIdrawable *(*createDrawable)(__GLXscreenConfigs *psc,
 135                                         XID drawable,
 136                                         GLXDrawable glxDrawable,
 137                                         const __GLcontextModes *modes);
 138
 139     void (*swapBuffers)(__GLXDRIdrawable *pdraw);
 140     void (*copySubBuffer)(__GLXDRIdrawable *pdraw,
 141                           int x, int y, int width, int height);
 142 };
 143
 144 struct __GLXDRIcontextRec {
 145     void (*destroyContext)(__GLXDRIcontext *context, __GLXscreenConfigs *psc,
 146                            Display *dpy);
 147     Bool (*bindContext)(__GLXDRIcontext *context,
 148                         __GLXDRIdrawable *pdraw,
 149                         __GLXDRIdrawable *pread);
 150
 151     void (*unbindContext)(__GLXDRIcontext *context);
 152 };
 153
 154 struct __GLXDRIdrawableRec {
 155     void (*destroyDrawable)(__GLXDRIdrawable *drawable);
 156
 157     XID xDrawable;
 158     XID drawable;
 159     __GLXscreenConfigs *psc;
 160     GLenum textureTarget;
 161     __DRIdrawable *driDrawable;
 162 };
 163
 164 /*
 165 ** Function to create and DRI display data and initialize the display
 166 ** dependent methods.
 167 */
 168 extern __GLXDRIdisplay *driswCreateDisplay(Display *dpy);
 169 extern __GLXDRIdisplay *driCreateDisplay(Display *dpy);
 170 extern __GLXDRIdisplay *dri2CreateDisplay(Display *dpy);
 171
 172 extern void DRI_glXUseXFont( Font font, int first, int count, int listbase );
 173
 174 /*
 175 ** Functions to obtain driver configuration information from a direct
 176 ** rendering client application
 177 */
 178 extern const char *glXGetScreenDriver (Display *dpy, int scrNum);
 179
 180 extern const char *glXGetDriverConfig (const char *driverName);
 181
 182 #endif
 183
 184 /************************************************************************/
 185
 186 #define __GL_CLIENT_ATTRIB_STACK_DEPTH 16
 187
 188 typedef struct __GLXpixelStoreModeRec {
 189     GLboolean swapEndian;
 190     GLboolean lsbFirst;
 191     GLuint rowLength;
 192     GLuint imageHeight;
 193     GLuint imageDepth;
 194     GLuint skipRows;
 195     GLuint skipPixels;
 196     GLuint skipImages;
 197     GLuint alignment;
 198 } __GLXpixelStoreMode;
 199
 200
 201 typedef struct __GLXattributeRec {
 202     GLuint mask;
 203
 204     /**
 205      * Pixel storage state.  Most of the pixel store mode state is kept
 206      * here and used by the client code to manage the packing and
 207      * unpacking of data sent to/received from the server.
 208      */
 209     __GLXpixelStoreMode storePack, storeUnpack;
 210
 211     /**
 212      * Is EXT_vertex_array / GL 1.1 DrawArrays protocol specifically
 213      * disabled?
 214      */
 215     GLboolean NoDrawArraysProtocol;
 216
 217     /**
 218      * Vertex Array storage state.  The vertex array component
 219      * state is stored here and is used to manage the packing of
 220      * DrawArrays data sent to the server.
 221      */
 222     struct array_state_vector * array_state;
 223 } __GLXattribute;
 224
 225 typedef struct __GLXattributeMachineRec {
 226         __GLXattribute *stack[__GL_CLIENT_ATTRIB_STACK_DEPTH];
 227         __GLXattribute **stackPointer;
 228 } __GLXattributeMachine;
 229
 230 /**
 231  * GLX state that needs to be kept on the client.  One of these records
 232  * exist for each context that has been made current by this client.
 233  */
 234 struct __GLXcontextRec {
 235     /**
 236      * \name Drawing command buffer.
 237      *
 238      * Drawing commands are packed into this buffer before being sent as a
 239      * single GLX protocol request.  The buffer is sent when it overflows or
 240      * is flushed by \c __glXFlushRenderBuffer.  \c pc is the next location
 241      * in the buffer to be filled.  \c limit is described above in the buffer
 242      * slop discussion.
 243      *
 244      * Commands that require large amounts of data to be transfered will
 245      * also use this buffer to hold a header that describes the large
 246      * command.
 247      *
 248      * These must be the first 6 fields since they are static initialized
 249      * in the dummy context in glxext.c
 250      */
 251     /*@{*/
 252     GLubyte *buf;
 253     GLubyte *pc;
 254     GLubyte *limit;
 255     GLubyte *bufEnd;
 256     GLint bufSize;
 257     /*@}*/
 258
 259     /**
 260      * The XID of this rendering context.  When the context is created a
 261      * new XID is allocated.  This is set to None when the context is
 262      * destroyed but is still current to some thread. In this case the
 263      * context will be freed on next MakeCurrent.
 264      */
 265     XID xid;
 266
 267     /**
 268      * The XID of the \c shareList context.
 269      */
 270     XID share_xid;
 271
 272     /**
 273      * Screen number.
 274      */
 275     GLint screen;
 276     __GLXscreenConfigs *psc;
 277
 278     /**
 279      * \c GL_TRUE if the context was created with ImportContext, which
 280      * means the server-side context was created by another X client.
 281      */
 282     GLboolean imported;
 283
 284     /**
 285      * The context tag returned by MakeCurrent when this context is made
 286      * current. This tag is used to identify the context that a thread has
 287      * current so that proper server context management can be done.  It is
 288      * used for all context specific commands (i.e., \c Render, \c RenderLarge,
 289      * \c WaitX, \c WaitGL, \c UseXFont, and \c MakeCurrent (for the old
 290      * context)).
 291      */
 292     GLXContextTag currentContextTag;
 293
 294     /**
 295      * \name Rendering mode
 296      *
 297      * The rendering mode is kept on the client as well as the server.
 298      * When \c glRenderMode is called, the buffer associated with the
 299      * previous rendering mode (feedback or select) is filled.
 300      */
 301     /*@{*/
 302     GLenum renderMode;
 303     GLfloat *feedbackBuf;
 304     GLuint *selectBuf;
 305     /*@}*/
 306
 307     /**
 308      * This is \c GL_TRUE if the pixel unpack modes are such that an image
 309      * can be unpacked from the clients memory by just copying.  It may
 310      * still be true that the server will have to do some work.  This
 311      * just promises that a straight copy will fetch the correct bytes.
 312      */
 313     GLboolean fastImageUnpack;
 314
 315     /**
 316      * Fill newImage with the unpacked form of \c oldImage getting it
 317      * ready for transport to the server.
 318      */
 319     void (*fillImage)(__GLXcontext*, GLint, GLint, GLint, GLint, GLenum,
 320                       GLenum, const GLvoid*, GLubyte*, GLubyte*);
 321
 322     /**
 323      * Client side attribs.
 324      */
 325     __GLXattributeMachine attributes;
 326
 327     /**
 328      * Client side error code.  This is set when client side gl API
 329      * routines need to set an error because of a bad enumerant or
 330      * running out of memory, etc.
 331      */
 332     GLenum error;
 333
 334     /**
 335      * Whether this context does direct rendering.
 336      */
 337     Bool isDirect;
 338
 339     /**
 340      * \c dpy of current display for this context.  Will be \c NULL if not
 341      * current to any display, or if this is the "dummy context".
 342      */
 343     Display *currentDpy;
 344
 345     /**
 346      * The current drawable for this context.  Will be None if this
 347      * context is not current to any drawable.  currentReadable is below.
 348      */
 349     GLXDrawable currentDrawable;
 350
 351     /**
 352      * \name GL Constant Strings
 353      *
 354      * Constant strings that describe the server implementation
 355      * These pertain to GL attributes, not to be confused with
 356      * GLX versioning attributes.
 357      */
 358     /*@{*/
 359     GLubyte *vendor;
 360     GLubyte *renderer;
 361     GLubyte *version;
 362     GLubyte *extensions;
 363     /*@}*/
 364
 365     /**
 366      * Record the dpy this context was created on for later freeing
 367      */
 368     Display *createDpy;
 369
 370     /**
 371      * Maximum small render command size.  This is the smaller of 64k and
 372      * the size of the above buffer.
 373      */
 374     GLint maxSmallRenderCommandSize;
 375
 376     /**
 377      * Major opcode for the extension.  Copied here so a lookup isn't
 378      * needed.
 379      */
 380     GLint majorOpcode;
 381
 382     /**
 383      * Pointer to the mode used to create this context.
 384      */
 385     const __GLcontextModes * mode;
 386
 387 #ifdef GLX_DIRECT_RENDERING
 388     __GLXDRIcontext *driContext;
 389     __DRIcontext *__driContext;
 390 #endif
 391
 392     /**
 393      * The current read-drawable for this context.  Will be None if this
 394      * context is not current to any drawable.
 395      *
 396      * \since Internal API version 20030606.
 397      */
 398     GLXDrawable currentReadable;
 399
 400    /**
 401     * Pointer to client-state data that is private to libGL.  This is only
 402     * used for indirect rendering contexts.
 403     *
 404     * No internal API version change was made for this change.  Client-side
 405     * drivers should NEVER use this data or even care that it exists.
 406     */
 407    void * client_state_private;
 408
 409    /**
 410     * Stored value for \c glXQueryContext attribute \c GLX_RENDER_TYPE.
 411     */
 412    int renderType;
 413
 414    /**
 415     * \name Raw server GL version
 416     *
 417     * True core GL version supported by the server.  This is the raw value
 418     * returned by the server, and it may not reflect what is actually
 419     * supported (or reported) by the client-side library.
 420     */
 421     /*@{*/
 422    int server_major;        /**< Major version number. */
 423    int server_minor;        /**< Minor version number. */
 424     /*@}*/
 425
 426     char gl_extension_bits[ __GL_EXT_BYTES ];
 427 };
 428
 429 #define __glXSetError(gc,code) \
 430     if (!(gc)->error) {        \
 431         (gc)->error = code;    \
 432     }
 433
 434 extern void __glFreeAttributeState(__GLXcontext *);
 435
 436 /************************************************************************/
 437
 438 /**
 439  * The size of the largest drawing command known to the implementation
 440  * that will use the GLXRender GLX command.  In this case it is
 441  * \c glPolygonStipple.
 442  */
 443 #define __GLX_MAX_SMALL_RENDER_CMD_SIZE 156
 444
 445 /**
 446  * To keep the implementation fast, the code uses a "limit" pointer
 447  * to determine when the drawing command buffer is too full to hold
 448  * another fixed size command.  This constant defines the amount of
 449  * space that must always be available in the drawing command buffer
 450  * at all times for the implementation to work.  It is important that
 451  * the number be just large enough, but not so large as to reduce the
 452  * efficacy of the buffer.  The "+32" is just to keep the code working
 453  * in case somebody counts wrong.
 454  */
 455 #define __GLX_BUFFER_LIMIT_SIZE (__GLX_MAX_SMALL_RENDER_CMD_SIZE + 32)
 456
 457 /**
 458  * This implementation uses a smaller threshold for switching
 459  * to the RenderLarge protocol than the protcol requires so that
 460  * large copies don't occur.
 461  */
 462 #define __GLX_RENDER_CMD_SIZE_LIMIT     4096
 463
 464 /**
 465  * One of these records exists per screen of the display.  It contains
 466  * a pointer to the config data for that screen (if the screen supports GL).
 467  */
 468 struct __GLXscreenConfigsRec {
 469     /**
 470      * GLX extension string reported by the X-server.
 471      */
 472     const char *serverGLXexts;
 473
 474     /**
 475      * GLX extension string to be reported to applications.  This is the
 476      * set of extensions that the application can actually use.
 477      */
 478     char *effectiveGLXexts;
 479
 480 #ifdef GLX_DIRECT_RENDERING
 481     /**
 482      * Per screen direct rendering interface functions and data.
 483      */
 484     __DRIscreen *__driScreen;
 485     const __DRIcoreExtension *core;
 486     const __DRIlegacyExtension *legacy;
 487     const __DRIswrastExtension *swrast;
 488     const __DRIdri2Extension *dri2;
 489     __glxHashTable *drawHash;
 490     Display *dpy;
 491     int scr, fd;
 492     void *driver;
 493
 494     __GLXDRIscreen *driScreen;
 495
 496 #ifdef __DRI_COPY_SUB_BUFFER
 497     const __DRIcopySubBufferExtension *driCopySubBuffer;
 498 #endif
 499
 500 #ifdef __DRI_SWAP_CONTROL
 501     const __DRIswapControlExtension *swapControl;
 502 #endif
 503
 504 #ifdef __DRI_ALLOCATE
 505     const __DRIallocateExtension *allocate;
 506 #endif
 507
 508 #ifdef __DRI_FRAME_TRACKING
 509     const __DRIframeTrackingExtension *frameTracking;
 510 #endif
 511
 512 #ifdef __DRI_MEDIA_STREAM_COUNTER
 513     const __DRImediaStreamCounterExtension *msc;
 514 #endif
 515
 516 #ifdef __DRI_TEX_BUFFER
 517     const __DRItexBufferExtension *texBuffer;
 518 #endif
 519
 520 #endif
 521
 522     /**
 523      * Linked list of glx visuals and  fbconfigs for this screen.
 524      */
 525     __GLcontextModes *visuals, *configs;
 526
 527     /**
 528      * Per-screen dynamic GLX extension tracking.  The \c direct_support
 529      * field only contains enough bits for 64 extensions.  Should libGL
 530      * ever need to track more than 64 GLX extensions, we can safely grow
 531      * this field.  The \c __GLXscreenConfigs structure is not used outside
 532      * libGL.
 533      */
 534     /*@{*/
 535     unsigned char direct_support[8];
 536     GLboolean ext_list_first_time;
 537     /*@}*/
 538
 539 };
 540
 541 /**
 542  * Per display private data.  One of these records exists for each display
 543  * that is using the OpenGL (GLX) extension.
 544  */
 545 struct __GLXdisplayPrivateRec {
 546     /**
 547      * Back pointer to the display
 548      */
 549     Display *dpy;
 550
 551     /**
 552      * The \c majorOpcode is common to all connections to the same server.
 553      * It is also copied into the context structure.
 554      */
 555     int majorOpcode;
 556
 557     /**
 558      * \name Server Version
 559      *
 560      * Major and minor version returned by the server during initialization.
 561      */
 562     /*@{*/
 563     int majorVersion, minorVersion;
 564     /*@}*/
 565
 566     /**
 567      * \name Storage for the servers GLX vendor and versions strings.
 568      *
 569      * These are the same for all screens on this display. These fields will
 570      * be filled in on demand.
 571      */
 572     /*@{*/
 573     const char *serverGLXvendor;
 574     const char *serverGLXversion;
 575     /*@}*/
 576
 577     /**
 578      * Configurations of visuals for all screens on this display.
 579      * Also, per screen data which now includes the server \c GLX_EXTENSION
 580      * string.
 581      */
 582     __GLXscreenConfigs *screenConfigs;
 583
 584 #ifdef GLX_DIRECT_RENDERING
 585     /**
 586      * Per display direct rendering interface functions and data.
 587      */
 588     __GLXDRIdisplay *driswDisplay;
 589     __GLXDRIdisplay *driDisplay;
 590     __GLXDRIdisplay *dri2Display;
 591 #endif
 592 };
 593
 594
 595 extern GLubyte *__glXFlushRenderBuffer(__GLXcontext*, GLubyte*);
 596
 597 extern void __glXSendLargeChunk(__GLXcontext *gc, GLint requestNumber,
 598                                 GLint totalRequests,
 599                                 const GLvoid * data, GLint dataLen);
 600
 601 extern void __glXSendLargeCommand(__GLXcontext *, const GLvoid *, GLint,
 602                                   const GLvoid *, GLint);
 603
 604 /* Initialize the GLX extension for dpy */
 605 extern __GLXdisplayPrivate * __glXGetPrivateFromDisplay(Display *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 * __glXQueryServerString(Display* dpy, int opcode,
 746                                      CARD32 screen, CARD32 name);
 747 extern char * __glXGetString(Display* dpy, int opcode,
 748                              CARD32 screen, CARD32 name);
 749
 750 extern char *__glXstrdup(const char *str);
 751
 752
 753 extern const char __glXGLClientVersion[];
 754 extern const char __glXGLClientExtensions[];
 755
 756 /* Get the unadjusted system time */
 757 extern int __glXGetUST( int64_t * ust );
 758
 759 extern GLboolean __glXGetMscRateOML(Display * dpy, GLXDrawable drawable,
 760                                     int32_t * numerator, int32_t * denominator);
 761
 762 #ifdef GLX_DIRECT_RENDERING
 763 GLboolean
 764 __driGetMscRateOML(__DRIdrawable *draw,
 765                    int32_t *numerator, int32_t *denominator, void *private);
 766 #endif
 767
 768 #endif /* !__GLX_client_h__ */