src/glx/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 #include <X11/extensions/extutil.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( PTHREADS )
  60 # include <pthread.h>
  61 #endif
  62
  63 #include "glxextensions.h"
  64
  65
  66 /* If we build the library with gcc's -fvisibility=hidden flag, we'll
  67  * use the PUBLIC macro to mark functions that are to be exported.
  68  *
  69  * We also need to define a USED attribute, so the optimizer doesn't
  70  * inline a static function that we later use in an alias. - ajax
  71  */
  72 #if defined(__GNUC__)
  73 #  define PUBLIC __attribute__((visibility("default")))
  74 #  define USED __attribute__((used))
  75 #else
  76 #  define PUBLIC
  77 #  define USED
  78 #endif
  79
  80
  81
  82 #define GLX_MAJOR_VERSION 1       /* current version numbers */
  83 #define GLX_MINOR_VERSION 4
  84
  85 #define __GLX_MAX_TEXTURE_UNITS 32
  86
  87 typedef struct __GLXscreenConfigsRec __GLXscreenConfigs;
  88 typedef struct __GLXcontextRec __GLXcontext;
  89 typedef struct __GLXdrawableRec __GLXdrawable;
  90 typedef struct __GLXdisplayPrivateRec __GLXdisplayPrivate;
  91 typedef struct _glapi_table __GLapi;
  92
  93 /************************************************************************/
  94
  95 #ifdef GLX_DIRECT_RENDERING
  96
  97 #define containerOf(ptr, type, member)              \
  98     (type *)( (char *)ptr - offsetof(type,member) )
  99
 100 #include <GL/internal/dri_interface.h>
 101
 102
 103 /**
 104  * Display dependent methods.  This structure is initialized during the
 105  * \c driCreateDisplay call.
 106  */
 107 typedef struct __GLXDRIdisplayRec __GLXDRIdisplay;
 108 typedef struct __GLXDRIscreenRec __GLXDRIscreen;
 109 typedef struct __GLXDRIdrawableRec __GLXDRIdrawable;
 110 typedef struct __GLXDRIcontextRec __GLXDRIcontext;
 111
 112 #include "glxextensions.h"
 113
 114 struct __GLXDRIdisplayRec
 115 {
 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    int64_t (*swapBuffers)(__GLXDRIdrawable *pdraw, int64_t target_msc,
 140                           int64_t divisor, int64_t remainder);
 141    void (*copySubBuffer)(__GLXDRIdrawable *pdraw,
 142                          int x, int y, int width, int height);
 143    void (*waitX)(__GLXDRIdrawable *pdraw);
 144    void (*waitGL)(__GLXDRIdrawable *pdraw);
 145    int (*getDrawableMSC)(__GLXscreenConfigs *psc, __GLXDRIdrawable *pdraw,
 146                          int64_t *ust, int64_t *msc, int64_t *sbc);
 147    int (*waitForMSC)(__GLXDRIdrawable *pdraw, int64_t target_msc,
 148                      int64_t divisor, int64_t remainder, int64_t *ust,
 149                      int64_t *msc, int64_t *sbc);
 150    int (*waitForSBC)(__GLXDRIdrawable *pdraw, int64_t target_sbc, int64_t *ust,
 151                      int64_t *msc, int64_t *sbc);
 152    void (*setSwapInterval)(__GLXDRIdrawable *pdraw, int interval);
 153    int (*getSwapInterval)(__GLXDRIdrawable *pdraw);
 154 };
 155
 156 struct __GLXDRIcontextRec
 157 {
 158    void (*destroyContext) (__GLXDRIcontext * context,
 159                            __GLXscreenConfigs * psc, Display * dpy);
 160      Bool(*bindContext) (__GLXDRIcontext * context, __GLXDRIdrawable * pdraw,
 161                          __GLXDRIdrawable * pread);
 162
 163    void (*unbindContext) (__GLXDRIcontext * context);
 164 };
 165
 166 struct __GLXDRIdrawableRec
 167 {
 168    void (*destroyDrawable) (__GLXDRIdrawable * drawable);
 169
 170    XID xDrawable;
 171    XID drawable;
 172    __GLXscreenConfigs *psc;
 173    GLenum textureTarget;
 174    __DRIdrawable *driDrawable;
 175    GLenum textureFormat;        /* EXT_texture_from_pixmap support */
 176 };
 177
 178 /*
 179 ** Function to create and DRI display data and initialize the display
 180 ** dependent methods.
 181 */
 182 extern __GLXDRIdisplay *driswCreateDisplay(Display * dpy);
 183 extern __GLXDRIdisplay *driCreateDisplay(Display * dpy);
 184 extern __GLXDRIdisplay *dri2CreateDisplay(Display * dpy);
 185 extern void dri2InvalidateBuffers(Display *dpy, XID drawable);
 186
 187
 188 extern void DRI_glXUseXFont(Font font, int first, int count, int listbase);
 189
 190 /*
 191 ** Functions to obtain driver configuration information from a direct
 192 ** rendering client application
 193 */
 194 extern const char *glXGetScreenDriver(Display * dpy, int scrNum);
 195
 196 extern const char *glXGetDriverConfig(const char *driverName);
 197
 198 #endif
 199
 200 /************************************************************************/
 201
 202 #define __GL_CLIENT_ATTRIB_STACK_DEPTH 16
 203
 204 typedef struct __GLXpixelStoreModeRec
 205 {
 206    GLboolean swapEndian;
 207    GLboolean lsbFirst;
 208    GLuint rowLength;
 209    GLuint imageHeight;
 210    GLuint imageDepth;
 211    GLuint skipRows;
 212    GLuint skipPixels;
 213    GLuint skipImages;
 214    GLuint alignment;
 215 } __GLXpixelStoreMode;
 216
 217
 218 typedef struct __GLXattributeRec
 219 {
 220    GLuint mask;
 221
 222     /**
 223      * Pixel storage state.  Most of the pixel store mode state is kept
 224      * here and used by the client code to manage the packing and
 225      * unpacking of data sent to/received from the server.
 226      */
 227    __GLXpixelStoreMode storePack, storeUnpack;
 228
 229     /**
 230      * Is EXT_vertex_array / GL 1.1 DrawArrays protocol specifically
 231      * disabled?
 232      */
 233    GLboolean NoDrawArraysProtocol;
 234
 235     /**
 236      * Vertex Array storage state.  The vertex array component
 237      * state is stored here and is used to manage the packing of
 238      * DrawArrays data sent to the server.
 239      */
 240    struct array_state_vector *array_state;
 241 } __GLXattribute;
 242
 243 typedef struct __GLXattributeMachineRec
 244 {
 245    __GLXattribute *stack[__GL_CLIENT_ATTRIB_STACK_DEPTH];
 246    __GLXattribute **stackPointer;
 247 } __GLXattributeMachine;
 248
 249 /**
 250  * GLX state that needs to be kept on the client.  One of these records
 251  * exist for each context that has been made current by this client.
 252  */
 253 struct __GLXcontextRec
 254 {
 255     /**
 256      * \name Drawing command buffer.
 257      *
 258      * Drawing commands are packed into this buffer before being sent as a
 259      * single GLX protocol request.  The buffer is sent when it overflows or
 260      * is flushed by \c __glXFlushRenderBuffer.  \c pc is the next location
 261      * in the buffer to be filled.  \c limit is described above in the buffer
 262      * slop discussion.
 263      *
 264      * Commands that require large amounts of data to be transfered will
 265      * also use this buffer to hold a header that describes the large
 266      * command.
 267      *
 268      * These must be the first 6 fields since they are static initialized
 269      * in the dummy context in glxext.c
 270      */
 271    /*@{ */
 272    GLubyte *buf;
 273    GLubyte *pc;
 274    GLubyte *limit;
 275    GLubyte *bufEnd;
 276    GLint bufSize;
 277    /*@} */
 278
 279     /**
 280      * The XID of this rendering context.  When the context is created a
 281      * new XID is allocated.  This is set to None when the context is
 282      * destroyed but is still current to some thread. In this case the
 283      * context will be freed on next MakeCurrent.
 284      */
 285    XID xid;
 286
 287     /**
 288      * The XID of the \c shareList context.
 289      */
 290    XID share_xid;
 291
 292     /**
 293      * Screen number.
 294      */
 295    GLint screen;
 296    __GLXscreenConfigs *psc;
 297
 298     /**
 299      * \c GL_TRUE if the context was created with ImportContext, which
 300      * means the server-side context was created by another X client.
 301      */
 302    GLboolean imported;
 303
 304     /**
 305      * The context tag returned by MakeCurrent when this context is made
 306      * current. This tag is used to identify the context that a thread has
 307      * current so that proper server context management can be done.  It is
 308      * used for all context specific commands (i.e., \c Render, \c RenderLarge,
 309      * \c WaitX, \c WaitGL, \c UseXFont, and \c MakeCurrent (for the old
 310      * context)).
 311      */
 312    GLXContextTag currentContextTag;
 313
 314     /**
 315      * \name Rendering mode
 316      *
 317      * The rendering mode is kept on the client as well as the server.
 318      * When \c glRenderMode is called, the buffer associated with the
 319      * previous rendering mode (feedback or select) is filled.
 320      */
 321    /*@{ */
 322    GLenum renderMode;
 323    GLfloat *feedbackBuf;
 324    GLuint *selectBuf;
 325    /*@} */
 326
 327     /**
 328      * This is \c GL_TRUE if the pixel unpack modes are such that an image
 329      * can be unpacked from the clients memory by just copying.  It may
 330      * still be true that the server will have to do some work.  This
 331      * just promises that a straight copy will fetch the correct bytes.
 332      */
 333    GLboolean fastImageUnpack;
 334
 335     /**
 336      * Fill newImage with the unpacked form of \c oldImage getting it
 337      * ready for transport to the server.
 338      */
 339    void (*fillImage) (__GLXcontext *, GLint, GLint, GLint, GLint, GLenum,
 340                       GLenum, const GLvoid *, GLubyte *, GLubyte *);
 341
 342     /**
 343      * Client side attribs.
 344      */
 345    __GLXattributeMachine attributes;
 346
 347     /**
 348      * Client side error code.  This is set when client side gl API
 349      * routines need to set an error because of a bad enumerant or
 350      * running out of memory, etc.
 351      */
 352    GLenum error;
 353
 354     /**
 355      * Whether this context does direct rendering.
 356      */
 357    Bool isDirect;
 358
 359     /**
 360      * \c dpy of current display for this context.  Will be \c NULL if not
 361      * current to any display, or if this is the "dummy context".
 362      */
 363    Display *currentDpy;
 364
 365     /**
 366      * The current drawable for this context.  Will be None if this
 367      * context is not current to any drawable.  currentReadable is below.
 368      */
 369    GLXDrawable currentDrawable;
 370
 371     /**
 372      * \name GL Constant Strings
 373      *
 374      * Constant strings that describe the server implementation
 375      * These pertain to GL attributes, not to be confused with
 376      * GLX versioning attributes.
 377      */
 378    /*@{ */
 379    GLubyte *vendor;
 380    GLubyte *renderer;
 381    GLubyte *version;
 382    GLubyte *extensions;
 383    /*@} */
 384
 385     /**
 386      * Record the dpy this context was created on for later freeing
 387      */
 388    Display *createDpy;
 389
 390     /**
 391      * Maximum small render command size.  This is the smaller of 64k and
 392      * the size of the above buffer.
 393      */
 394    GLint maxSmallRenderCommandSize;
 395
 396     /**
 397      * Major opcode for the extension.  Copied here so a lookup isn't
 398      * needed.
 399      */
 400    GLint majorOpcode;
 401
 402     /**
 403      * Pointer to the mode used to create this context.
 404      */
 405    const __GLcontextModes *mode;
 406
 407 #ifdef GLX_DIRECT_RENDERING
 408    __GLXDRIcontext *driContext;
 409    __DRIcontext *__driContext;
 410 #endif
 411
 412     /**
 413      * The current read-drawable for this context.  Will be None if this
 414      * context is not current to any drawable.
 415      *
 416      * \since Internal API version 20030606.
 417      */
 418    GLXDrawable currentReadable;
 419
 420    /**
 421     * Pointer to client-state data that is private to libGL.  This is only
 422     * used for indirect rendering contexts.
 423     *
 424     * No internal API version change was made for this change.  Client-side
 425     * drivers should NEVER use this data or even care that it exists.
 426     */
 427    void *client_state_private;
 428
 429    /**
 430     * Stored value for \c glXQueryContext attribute \c GLX_RENDER_TYPE.
 431     */
 432    int renderType;
 433
 434    /**
 435     * \name Raw server GL version
 436     *
 437     * True core GL version supported by the server.  This is the raw value
 438     * returned by the server, and it may not reflect what is actually
 439     * supported (or reported) by the client-side library.
 440     */
 441    /*@{ */
 442    int server_major;        /**< Major version number. */
 443    int server_minor;        /**< Minor version number. */
 444    /*@} */
 445
 446    /**
 447     * Thread ID we're currently current in. Zero if none.
 448     */
 449    unsigned long thread_id;
 450
 451    char gl_extension_bits[__GL_EXT_BYTES];
 452 };
 453
 454 #define __glXSetError(gc,code)  \
 455    if (!(gc)->error) {          \
 456       (gc)->error = code;       \
 457    }
 458
 459 extern void __glFreeAttributeState(__GLXcontext *);
 460
 461 /************************************************************************/
 462
 463 /**
 464  * The size of the largest drawing command known to the implementation
 465  * that will use the GLXRender GLX command.  In this case it is
 466  * \c glPolygonStipple.
 467  */
 468 #define __GLX_MAX_SMALL_RENDER_CMD_SIZE 156
 469
 470 /**
 471  * To keep the implementation fast, the code uses a "limit" pointer
 472  * to determine when the drawing command buffer is too full to hold
 473  * another fixed size command.  This constant defines the amount of
 474  * space that must always be available in the drawing command buffer
 475  * at all times for the implementation to work.  It is important that
 476  * the number be just large enough, but not so large as to reduce the
 477  * efficacy of the buffer.  The "+32" is just to keep the code working
 478  * in case somebody counts wrong.
 479  */
 480 #define __GLX_BUFFER_LIMIT_SIZE (__GLX_MAX_SMALL_RENDER_CMD_SIZE + 32)
 481
 482 /**
 483  * This implementation uses a smaller threshold for switching
 484  * to the RenderLarge protocol than the protcol requires so that
 485  * large copies don't occur.
 486  */
 487 #define __GLX_RENDER_CMD_SIZE_LIMIT 4096
 488
 489 /**
 490  * One of these records exists per screen of the display.  It contains
 491  * a pointer to the config data for that screen (if the screen supports GL).
 492  */
 493 struct __GLXscreenConfigsRec
 494 {
 495     /**
 496      * GLX extension string reported by the X-server.
 497      */
 498    const char *serverGLXexts;
 499
 500     /**
 501      * GLX extension string to be reported to applications.  This is the
 502      * set of extensions that the application can actually use.
 503      */
 504    char *effectiveGLXexts;
 505
 506 #ifdef GLX_DIRECT_RENDERING
 507     /**
 508      * Per screen direct rendering interface functions and data.
 509      */
 510    __DRIscreen *__driScreen;
 511    const __DRIcoreExtension *core;
 512    const __DRIlegacyExtension *legacy;
 513    const __DRIswrastExtension *swrast;
 514    const __DRIdri2Extension *dri2;
 515    __glxHashTable *drawHash;
 516    Display *dpy;
 517    int scr, fd;
 518    void *driver;
 519
 520    __GLXDRIscreen *driScreen;
 521
 522    const __DRIconfig **driver_configs;
 523
 524 #ifdef __DRI_COPY_SUB_BUFFER
 525    const __DRIcopySubBufferExtension *driCopySubBuffer;
 526 #endif
 527
 528 #ifdef __DRI_SWAP_CONTROL
 529    const __DRIswapControlExtension *swapControl;
 530 #endif
 531
 532 #ifdef __DRI_ALLOCATE
 533    const __DRIallocateExtension *allocate;
 534 #endif
 535
 536 #ifdef __DRI_FRAME_TRACKING
 537    const __DRIframeTrackingExtension *frameTracking;
 538 #endif
 539
 540 #ifdef __DRI_MEDIA_STREAM_COUNTER
 541    const __DRImediaStreamCounterExtension *msc;
 542 #endif
 543
 544 #ifdef __DRI_TEX_BUFFER
 545    const __DRItexBufferExtension *texBuffer;
 546 #endif
 547
 548 #ifdef __DRI2_FLUSH
 549    const __DRI2flushExtension *f;
 550 #endif
 551
 552 #endif
 553
 554     /**
 555      * Linked list of glx visuals and  fbconfigs for this screen.
 556      */
 557    __GLcontextModes *visuals, *configs;
 558
 559     /**
 560      * Per-screen dynamic GLX extension tracking.  The \c direct_support
 561      * field only contains enough bits for 64 extensions.  Should libGL
 562      * ever need to track more than 64 GLX extensions, we can safely grow
 563      * this field.  The \c __GLXscreenConfigs structure is not used outside
 564      * libGL.
 565      */
 566    /*@{ */
 567    unsigned char direct_support[8];
 568    GLboolean ext_list_first_time;
 569    /*@} */
 570
 571 };
 572
 573 /**
 574  * Per display private data.  One of these records exists for each display
 575  * that is using the OpenGL (GLX) extension.
 576  */
 577 struct __GLXdisplayPrivateRec
 578 {
 579     /**
 580      * Back pointer to the display
 581      */
 582    Display *dpy;
 583
 584     /**
 585      * The \c majorOpcode is common to all connections to the same server.
 586      * It is also copied into the context structure.
 587      */
 588    int majorOpcode;
 589
 590     /**
 591      * \name Server Version
 592      *
 593      * Major and minor version returned by the server during initialization.
 594      */
 595    /*@{ */
 596    int majorVersion, minorVersion;
 597    /*@} */
 598
 599     /**
 600      * \name Storage for the servers GLX vendor and versions strings.
 601      *
 602      * These are the same for all screens on this display. These fields will
 603      * be filled in on demand.
 604      */
 605    /*@{ */
 606    const char *serverGLXvendor;
 607    const char *serverGLXversion;
 608    /*@} */
 609
 610     /**
 611      * Configurations of visuals for all screens on this display.
 612      * Also, per screen data which now includes the server \c GLX_EXTENSION
 613      * string.
 614      */
 615    __GLXscreenConfigs *screenConfigs;
 616
 617 #ifdef GLX_DIRECT_RENDERING
 618     /**
 619      * Per display direct rendering interface functions and data.
 620      */
 621    __GLXDRIdisplay *driswDisplay;
 622    __GLXDRIdisplay *driDisplay;
 623    __GLXDRIdisplay *dri2Display;
 624 #endif
 625 };
 626
 627
 628 extern GLubyte *__glXFlushRenderBuffer(__GLXcontext *, GLubyte *);
 629
 630 extern void __glXSendLargeChunk(__GLXcontext * gc, GLint requestNumber,
 631                                 GLint totalRequests,
 632                                 const GLvoid * data, GLint dataLen);
 633
 634 extern void __glXSendLargeCommand(__GLXcontext *, const GLvoid *, GLint,
 635                                   const GLvoid *, GLint);
 636
 637 /* Initialize the GLX extension for dpy */
 638 extern __GLXdisplayPrivate *__glXInitialize(Display *);
 639
 640 extern void __glXPreferEGL(int state);
 641
 642 /************************************************************************/
 643
 644 extern int __glXDebug;
 645
 646 /* This is per-thread storage in an MT environment */
 647 #if defined( PTHREADS )
 648
 649 extern void __glXSetCurrentContext(__GLXcontext * c);
 650
 651 # if defined( GLX_USE_TLS )
 652
 653 extern __thread void *__glX_tls_Context
 654    __attribute__ ((tls_model("initial-exec")));
 655
 656 #  define __glXGetCurrentContext() __glX_tls_Context
 657
 658 # else
 659
 660 extern __GLXcontext *__glXGetCurrentContext(void);
 661
 662 # endif /* defined( GLX_USE_TLS ) */
 663
 664 #else
 665
 666 extern __GLXcontext *__glXcurrentContext;
 667 #define __glXGetCurrentContext() __glXcurrentContext
 668 #define __glXSetCurrentContext(gc) __glXcurrentContext = gc
 669
 670 #endif /* defined( PTHREADS ) */
 671
 672 extern void __glXSetCurrentContextNull(void);
 673
 674 extern void __glXFreeContext(__GLXcontext *);
 675
 676
 677 /*
 678 ** Global lock for all threads in this address space using the GLX
 679 ** extension
 680 */
 681 #if defined( PTHREADS )
 682 extern pthread_mutex_t __glXmutex;
 683 #define __glXLock()    pthread_mutex_lock(&__glXmutex)
 684 #define __glXUnlock()  pthread_mutex_unlock(&__glXmutex)
 685 #else
 686 #define __glXLock()
 687 #define __glXUnlock()
 688 #endif
 689
 690 /*
 691 ** Setup for a command.  Initialize the extension for dpy if necessary.
 692 */
 693 extern CARD8 __glXSetupForCommand(Display * dpy);
 694
 695 /************************************************************************/
 696
 697 /*
 698 ** Data conversion and packing support.
 699 */
 700
 701 extern const GLuint __glXDefaultPixelStore[9];
 702
 703 /* Send an image to the server using RenderLarge. */
 704 extern void __glXSendLargeImage(__GLXcontext * gc, GLint compsize, GLint dim,
 705                                 GLint width, GLint height, GLint depth,
 706                                 GLenum format, GLenum type,
 707                                 const GLvoid * src, GLubyte * pc,
 708                                 GLubyte * modes);
 709
 710 /* Return the size, in bytes, of some pixel data */
 711 extern GLint __glImageSize(GLint, GLint, GLint, GLenum, GLenum, GLenum);
 712
 713 /* Return the number of elements per group of a specified format*/
 714 extern GLint __glElementsPerGroup(GLenum format, GLenum type);
 715
 716 /* Return the number of bytes per element, based on the element type (other
 717 ** than GL_BITMAP).
 718 */
 719 extern GLint __glBytesPerElement(GLenum type);
 720
 721 /*
 722 ** Fill the transport buffer with the data from the users buffer,
 723 ** applying some of the pixel store modes (unpack modes) to the data
 724 ** first.  As a side effect of this call, the "modes" field is
 725 ** updated to contain the modes needed by the server to decode the
 726 ** sent data.
 727 */
 728 extern void __glFillImage(__GLXcontext *, GLint, GLint, GLint, GLint, GLenum,
 729                           GLenum, const GLvoid *, GLubyte *, GLubyte *);
 730
 731 /* Copy map data with a stride into a packed buffer */
 732 extern void __glFillMap1f(GLint, GLint, GLint, const GLfloat *, GLubyte *);
 733 extern void __glFillMap1d(GLint, GLint, GLint, const GLdouble *, GLubyte *);
 734 extern void __glFillMap2f(GLint, GLint, GLint, GLint, GLint,
 735                           const GLfloat *, GLfloat *);
 736 extern void __glFillMap2d(GLint, GLint, GLint, GLint, GLint,
 737                           const GLdouble *, GLdouble *);
 738
 739 /*
 740 ** Empty an image out of the reply buffer into the clients memory applying
 741 ** the pack modes to pack back into the clients requested format.
 742 */
 743 extern void __glEmptyImage(__GLXcontext *, GLint, GLint, GLint, GLint, GLenum,
 744                            GLenum, const GLubyte *, GLvoid *);
 745
 746
 747 /*
 748 ** Allocate and Initialize Vertex Array client state, and free.
 749 */
 750 extern void __glXInitVertexArrayState(__GLXcontext *);
 751 extern void __glXFreeVertexArrayState(__GLXcontext *);
 752
 753 /*
 754 ** Inform the Server of the major and minor numbers and of the client
 755 ** libraries extension string.
 756 */
 757 extern void __glXClientInfo(Display * dpy, int opcode);
 758
 759 /************************************************************************/
 760
 761 /*
 762 ** Declarations that should be in Xlib
 763 */
 764 #ifdef __GL_USE_OUR_PROTOTYPES
 765 extern void _XFlush(Display *);
 766 extern Status _XReply(Display *, xReply *, int, Bool);
 767 extern void _XRead(Display *, void *, long);
 768 extern void _XSend(Display *, const void *, long);
 769 #endif
 770
 771
 772 extern void __glXInitializeVisualConfigFromTags(__GLcontextModes * config,
 773                                                 int count, const INT32 * bp,
 774                                                 Bool tagged_only,
 775                                                 Bool fbconfig_style_tags);
 776
 777 extern char *__glXQueryServerString(Display * dpy, int opcode,
 778                                     CARD32 screen, CARD32 name);
 779 extern char *__glXGetString(Display * dpy, int opcode,
 780                             CARD32 screen, CARD32 name);
 781
 782 extern char *__glXstrdup(const char *str);
 783
 784
 785 extern const char __glXGLClientVersion[];
 786 extern const char __glXGLClientExtensions[];
 787
 788 /* Get the unadjusted system time */
 789 extern int __glXGetUST(int64_t * ust);
 790
 791 extern GLboolean __glXGetMscRateOML(Display * dpy, GLXDrawable drawable,
 792                                     int32_t * numerator,
 793                                     int32_t * denominator);
 794
 795 #ifdef GLX_DIRECT_RENDERING
 796 GLboolean
 797 __driGetMscRateOML(__DRIdrawable * draw,
 798                    int32_t * numerator, int32_t * denominator, void *private);
 799
 800 /* So that dri2.c:DRI2WireToEvent() can access
 801  * glx_info->codes->first_event */
 802 XExtDisplayInfo *__glXFindDisplay (Display *dpy);
 803
 804 extern __GLXDRIdrawable *
 805 GetGLXDRIDrawable(Display *dpy, GLXDrawable drawable, int *const scrn_num);
 806
 807 #endif
 808
 809 #endif /* !__GLX_client_h__ */