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 extern void DRI_glXUseXFont(Font font, int first, int count, int listbase);
 101
 102 #endif
 103
 104 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
 105
 106 #include <GL/internal/dri_interface.h>
 107
 108 /**
 109  * Display dependent methods.  This structure is initialized during the
 110  * \c driCreateDisplay call.
 111  */
 112 typedef struct __GLXDRIdisplayRec __GLXDRIdisplay;
 113 typedef struct __GLXDRIscreenRec __GLXDRIscreen;
 114 typedef struct __GLXDRIdrawableRec __GLXDRIdrawable;
 115 typedef struct __GLXDRIcontextRec __GLXDRIcontext;
 116
 117 #include "glxextensions.h"
 118
 119 struct __GLXDRIdisplayRec
 120 {
 121     /**
 122      * Method to destroy the private DRI display data.
 123      */
 124    void (*destroyDisplay) (__GLXDRIdisplay * display);
 125
 126    __GLXDRIscreen *(*createScreen) (__GLXscreenConfigs * psc, int screen,
 127                                     __GLXdisplayPrivate * priv);
 128 };
 129
 130 struct __GLXDRIscreenRec {
 131
 132    void (*destroyScreen)(__GLXscreenConfigs *psc);
 133
 134    __GLXDRIcontext *(*createContext)(__GLXscreenConfigs *psc,
 135                                      const __GLcontextModes *mode,
 136                                      GLXContext gc,
 137                                      GLXContext shareList, int renderType);
 138
 139    __GLXDRIdrawable *(*createDrawable)(__GLXscreenConfigs *psc,
 140                                        XID drawable,
 141                                        GLXDrawable glxDrawable,
 142                                        const __GLcontextModes *modes);
 143
 144    int64_t (*swapBuffers)(__GLXDRIdrawable *pdraw, int64_t target_msc,
 145                           int64_t divisor, int64_t remainder);
 146    void (*copySubBuffer)(__GLXDRIdrawable *pdraw,
 147                          int x, int y, int width, int height);
 148    void (*waitX)(__GLXDRIdrawable *pdraw);
 149    void (*waitGL)(__GLXDRIdrawable *pdraw);
 150    int (*getDrawableMSC)(__GLXscreenConfigs *psc, __GLXDRIdrawable *pdraw,
 151                          int64_t *ust, int64_t *msc, int64_t *sbc);
 152    int (*waitForMSC)(__GLXDRIdrawable *pdraw, int64_t target_msc,
 153                      int64_t divisor, int64_t remainder, int64_t *ust,
 154                      int64_t *msc, int64_t *sbc);
 155    int (*waitForSBC)(__GLXDRIdrawable *pdraw, int64_t target_sbc, int64_t *ust,
 156                      int64_t *msc, int64_t *sbc);
 157    void (*setSwapInterval)(__GLXDRIdrawable *pdraw, int interval);
 158    int (*getSwapInterval)(__GLXDRIdrawable *pdraw);
 159 };
 160
 161 struct __GLXDRIcontextRec
 162 {
 163    void (*destroyContext) (__GLXDRIcontext * context,
 164                            __GLXscreenConfigs * psc, Display * dpy);
 165      Bool(*bindContext) (__GLXDRIcontext * context, __GLXDRIdrawable * pdraw,
 166                          __GLXDRIdrawable * pread);
 167
 168    void (*unbindContext) (__GLXDRIcontext * context);
 169 };
 170
 171 struct __GLXDRIdrawableRec
 172 {
 173    void (*destroyDrawable) (__GLXDRIdrawable * drawable);
 174
 175    XID xDrawable;
 176    XID drawable;
 177    __GLXscreenConfigs *psc;
 178    GLenum textureTarget;
 179    __DRIdrawable *driDrawable;
 180    GLenum textureFormat;        /* EXT_texture_from_pixmap support */
 181 };
 182
 183 /*
 184 ** Function to create and DRI display data and initialize the display
 185 ** dependent methods.
 186 */
 187 extern __GLXDRIdisplay *driswCreateDisplay(Display * dpy);
 188 extern __GLXDRIdisplay *driCreateDisplay(Display * dpy);
 189 extern __GLXDRIdisplay *dri2CreateDisplay(Display * dpy);
 190 extern void dri2InvalidateBuffers(Display *dpy, XID drawable);
 191
 192
 193 /*
 194 ** Functions to obtain driver configuration information from a direct
 195 ** rendering client application
 196 */
 197 extern const char *glXGetScreenDriver(Display * dpy, int scrNum);
 198
 199 extern const char *glXGetDriverConfig(const char *driverName);
 200
 201 #endif
 202
 203 /************************************************************************/
 204
 205 #define __GL_CLIENT_ATTRIB_STACK_DEPTH 16
 206
 207 typedef struct __GLXpixelStoreModeRec
 208 {
 209    GLboolean swapEndian;
 210    GLboolean lsbFirst;
 211    GLuint rowLength;
 212    GLuint imageHeight;
 213    GLuint imageDepth;
 214    GLuint skipRows;
 215    GLuint skipPixels;
 216    GLuint skipImages;
 217    GLuint alignment;
 218 } __GLXpixelStoreMode;
 219
 220
 221 typedef struct __GLXattributeRec
 222 {
 223    GLuint mask;
 224
 225     /**
 226      * Pixel storage state.  Most of the pixel store mode state is kept
 227      * here and used by the client code to manage the packing and
 228      * unpacking of data sent to/received from the server.
 229      */
 230    __GLXpixelStoreMode storePack, storeUnpack;
 231
 232     /**
 233      * Is EXT_vertex_array / GL 1.1 DrawArrays protocol specifically
 234      * disabled?
 235      */
 236    GLboolean NoDrawArraysProtocol;
 237
 238     /**
 239      * Vertex Array storage state.  The vertex array component
 240      * state is stored here and is used to manage the packing of
 241      * DrawArrays data sent to the server.
 242      */
 243    struct array_state_vector *array_state;
 244 } __GLXattribute;
 245
 246 typedef struct __GLXattributeMachineRec
 247 {
 248    __GLXattribute *stack[__GL_CLIENT_ATTRIB_STACK_DEPTH];
 249    __GLXattribute **stackPointer;
 250 } __GLXattributeMachine;
 251
 252 /**
 253  * GLX state that needs to be kept on the client.  One of these records
 254  * exist for each context that has been made current by this client.
 255  */
 256 struct __GLXcontextRec
 257 {
 258     /**
 259      * \name Drawing command buffer.
 260      *
 261      * Drawing commands are packed into this buffer before being sent as a
 262      * single GLX protocol request.  The buffer is sent when it overflows or
 263      * is flushed by \c __glXFlushRenderBuffer.  \c pc is the next location
 264      * in the buffer to be filled.  \c limit is described above in the buffer
 265      * slop discussion.
 266      *
 267      * Commands that require large amounts of data to be transfered will
 268      * also use this buffer to hold a header that describes the large
 269      * command.
 270      *
 271      * These must be the first 6 fields since they are static initialized
 272      * in the dummy context in glxext.c
 273      */
 274    /*@{ */
 275    GLubyte *buf;
 276    GLubyte *pc;
 277    GLubyte *limit;
 278    GLubyte *bufEnd;
 279    GLint bufSize;
 280    /*@} */
 281
 282     /**
 283      * The XID of this rendering context.  When the context is created a
 284      * new XID is allocated.  This is set to None when the context is
 285      * destroyed but is still current to some thread. In this case the
 286      * context will be freed on next MakeCurrent.
 287      */
 288    XID xid;
 289
 290     /**
 291      * The XID of the \c shareList context.
 292      */
 293    XID share_xid;
 294
 295     /**
 296      * Screen number.
 297      */
 298    GLint screen;
 299    __GLXscreenConfigs *psc;
 300
 301     /**
 302      * \c GL_TRUE if the context was created with ImportContext, which
 303      * means the server-side context was created by another X client.
 304      */
 305    GLboolean imported;
 306
 307     /**
 308      * The context tag returned by MakeCurrent when this context is made
 309      * current. This tag is used to identify the context that a thread has
 310      * current so that proper server context management can be done.  It is
 311      * used for all context specific commands (i.e., \c Render, \c RenderLarge,
 312      * \c WaitX, \c WaitGL, \c UseXFont, and \c MakeCurrent (for the old
 313      * context)).
 314      */
 315    GLXContextTag currentContextTag;
 316
 317     /**
 318      * \name Rendering mode
 319      *
 320      * The rendering mode is kept on the client as well as the server.
 321      * When \c glRenderMode is called, the buffer associated with the
 322      * previous rendering mode (feedback or select) is filled.
 323      */
 324    /*@{ */
 325    GLenum renderMode;
 326    GLfloat *feedbackBuf;
 327    GLuint *selectBuf;
 328    /*@} */
 329
 330     /**
 331      * This is \c GL_TRUE if the pixel unpack modes are such that an image
 332      * can be unpacked from the clients memory by just copying.  It may
 333      * still be true that the server will have to do some work.  This
 334      * just promises that a straight copy will fetch the correct bytes.
 335      */
 336    GLboolean fastImageUnpack;
 337
 338     /**
 339      * Fill newImage with the unpacked form of \c oldImage getting it
 340      * ready for transport to the server.
 341      */
 342    void (*fillImage) (__GLXcontext *, GLint, GLint, GLint, GLint, GLenum,
 343                       GLenum, const GLvoid *, GLubyte *, GLubyte *);
 344
 345     /**
 346      * Client side attribs.
 347      */
 348    __GLXattributeMachine attributes;
 349
 350     /**
 351      * Client side error code.  This is set when client side gl API
 352      * routines need to set an error because of a bad enumerant or
 353      * running out of memory, etc.
 354      */
 355    GLenum error;
 356
 357     /**
 358      * Whether this context does direct rendering.
 359      */
 360    Bool isDirect;
 361
 362     /**
 363      * \c dpy of current display for this context.  Will be \c NULL if not
 364      * current to any display, or if this is the "dummy context".
 365      */
 366    Display *currentDpy;
 367
 368     /**
 369      * The current drawable for this context.  Will be None if this
 370      * context is not current to any drawable.  currentReadable is below.
 371      */
 372    GLXDrawable currentDrawable;
 373
 374     /**
 375      * \name GL Constant Strings
 376      *
 377      * Constant strings that describe the server implementation
 378      * These pertain to GL attributes, not to be confused with
 379      * GLX versioning attributes.
 380      */
 381    /*@{ */
 382    GLubyte *vendor;
 383    GLubyte *renderer;
 384    GLubyte *version;
 385    GLubyte *extensions;
 386    /*@} */
 387
 388     /**
 389      * Record the dpy this context was created on for later freeing
 390      */
 391    Display *createDpy;
 392
 393     /**
 394      * Maximum small render command size.  This is the smaller of 64k and
 395      * the size of the above buffer.
 396      */
 397    GLint maxSmallRenderCommandSize;
 398
 399     /**
 400      * Major opcode for the extension.  Copied here so a lookup isn't
 401      * needed.
 402      */
 403    GLint majorOpcode;
 404
 405     /**
 406      * Pointer to the mode used to create this context.
 407      */
 408    const __GLcontextModes *mode;
 409
 410 #ifdef GLX_DIRECT_RENDERING
 411 #ifdef GLX_USE_APPLEGL
 412    void *driContext;
 413    Bool do_destroy;
 414 #else
 415    __GLXDRIcontext *driContext;
 416    __DRIcontext *__driContext;
 417 #endif
 418 #endif
 419
 420     /**
 421      * The current read-drawable for this context.  Will be None if this
 422      * context is not current to any drawable.
 423      *
 424      * \since Internal API version 20030606.
 425      */
 426    GLXDrawable currentReadable;
 427
 428    /**
 429     * Pointer to client-state data that is private to libGL.  This is only
 430     * used for indirect rendering contexts.
 431     *
 432     * No internal API version change was made for this change.  Client-side
 433     * drivers should NEVER use this data or even care that it exists.
 434     */
 435    void *client_state_private;
 436
 437    /**
 438     * Stored value for \c glXQueryContext attribute \c GLX_RENDER_TYPE.
 439     */
 440    int renderType;
 441
 442    /**
 443     * \name Raw server GL version
 444     *
 445     * True core GL version supported by the server.  This is the raw value
 446     * returned by the server, and it may not reflect what is actually
 447     * supported (or reported) by the client-side library.
 448     */
 449    /*@{ */
 450    int server_major;        /**< Major version number. */
 451    int server_minor;        /**< Minor version number. */
 452    /*@} */
 453
 454    /**
 455     * Thread ID we're currently current in. Zero if none.
 456     */
 457    unsigned long thread_id;
 458
 459    char gl_extension_bits[__GL_EXT_BYTES];
 460 };
 461
 462 #define __glXSetError(gc,code)  \
 463    if (!(gc)->error) {          \
 464       (gc)->error = code;       \
 465    }
 466
 467 extern void __glFreeAttributeState(__GLXcontext *);
 468
 469 /************************************************************************/
 470
 471 /**
 472  * The size of the largest drawing command known to the implementation
 473  * that will use the GLXRender GLX command.  In this case it is
 474  * \c glPolygonStipple.
 475  */
 476 #define __GLX_MAX_SMALL_RENDER_CMD_SIZE 156
 477
 478 /**
 479  * To keep the implementation fast, the code uses a "limit" pointer
 480  * to determine when the drawing command buffer is too full to hold
 481  * another fixed size command.  This constant defines the amount of
 482  * space that must always be available in the drawing command buffer
 483  * at all times for the implementation to work.  It is important that
 484  * the number be just large enough, but not so large as to reduce the
 485  * efficacy of the buffer.  The "+32" is just to keep the code working
 486  * in case somebody counts wrong.
 487  */
 488 #define __GLX_BUFFER_LIMIT_SIZE (__GLX_MAX_SMALL_RENDER_CMD_SIZE + 32)
 489
 490 /**
 491  * This implementation uses a smaller threshold for switching
 492  * to the RenderLarge protocol than the protcol requires so that
 493  * large copies don't occur.
 494  */
 495 #define __GLX_RENDER_CMD_SIZE_LIMIT 4096
 496
 497 /**
 498  * One of these records exists per screen of the display.  It contains
 499  * a pointer to the config data for that screen (if the screen supports GL).
 500  */
 501 struct __GLXscreenConfigsRec
 502 {
 503     /**
 504      * GLX extension string reported by the X-server.
 505      */
 506    const char *serverGLXexts;
 507
 508     /**
 509      * GLX extension string to be reported to applications.  This is the
 510      * set of extensions that the application can actually use.
 511      */
 512    char *effectiveGLXexts;
 513
 514 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
 515     /**
 516      * Per screen direct rendering interface functions and data.
 517      */
 518    __DRIscreen *__driScreen;
 519    const __DRIcoreExtension *core;
 520    const __DRIlegacyExtension *legacy;
 521    const __DRIswrastExtension *swrast;
 522    const __DRIdri2Extension *dri2;
 523    __glxHashTable *drawHash;
 524    Display *dpy;
 525    int scr, fd;
 526    void *driver;
 527
 528    __GLXDRIscreen *driScreen;
 529
 530    const __DRIconfig **driver_configs;
 531
 532 #ifdef __DRI_COPY_SUB_BUFFER
 533    const __DRIcopySubBufferExtension *driCopySubBuffer;
 534 #endif
 535
 536 #ifdef __DRI_SWAP_CONTROL
 537    const __DRIswapControlExtension *swapControl;
 538 #endif
 539
 540 #ifdef __DRI_ALLOCATE
 541    const __DRIallocateExtension *allocate;
 542 #endif
 543
 544 #ifdef __DRI_FRAME_TRACKING
 545    const __DRIframeTrackingExtension *frameTracking;
 546 #endif
 547
 548 #ifdef __DRI_MEDIA_STREAM_COUNTER
 549    const __DRImediaStreamCounterExtension *msc;
 550 #endif
 551
 552 #ifdef __DRI_TEX_BUFFER
 553    const __DRItexBufferExtension *texBuffer;
 554 #endif
 555
 556 #ifdef __DRI2_FLUSH
 557    const __DRI2flushExtension *f;
 558 #endif
 559
 560 #endif
 561
 562     /**
 563      * Linked list of glx visuals and  fbconfigs for this screen.
 564      */
 565    __GLcontextModes *visuals, *configs;
 566
 567     /**
 568      * Per-screen dynamic GLX extension tracking.  The \c direct_support
 569      * field only contains enough bits for 64 extensions.  Should libGL
 570      * ever need to track more than 64 GLX extensions, we can safely grow
 571      * this field.  The \c __GLXscreenConfigs structure is not used outside
 572      * libGL.
 573      */
 574    /*@{ */
 575    unsigned char direct_support[8];
 576    GLboolean ext_list_first_time;
 577    /*@} */
 578
 579 };
 580
 581 /**
 582  * Per display private data.  One of these records exists for each display
 583  * that is using the OpenGL (GLX) extension.
 584  */
 585 struct __GLXdisplayPrivateRec
 586 {
 587     /**
 588      * Back pointer to the display
 589      */
 590    Display *dpy;
 591
 592     /**
 593      * The \c majorOpcode is common to all connections to the same server.
 594      * It is also copied into the context structure.
 595      */
 596    int majorOpcode;
 597
 598     /**
 599      * \name Server Version
 600      *
 601      * Major and minor version returned by the server during initialization.
 602      */
 603    /*@{ */
 604    int majorVersion, minorVersion;
 605    /*@} */
 606
 607     /**
 608      * \name Storage for the servers GLX vendor and versions strings.
 609      *
 610      * These are the same for all screens on this display. These fields will
 611      * be filled in on demand.
 612      */
 613    /*@{ */
 614    const char *serverGLXvendor;
 615    const char *serverGLXversion;
 616    /*@} */
 617
 618     /**
 619      * Configurations of visuals for all screens on this display.
 620      * Also, per screen data which now includes the server \c GLX_EXTENSION
 621      * string.
 622      */
 623    __GLXscreenConfigs *screenConfigs;
 624
 625 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
 626     /**
 627      * Per display direct rendering interface functions and data.
 628      */
 629    __GLXDRIdisplay *driswDisplay;
 630    __GLXDRIdisplay *driDisplay;
 631    __GLXDRIdisplay *dri2Display;
 632 #endif
 633 };
 634
 635
 636 extern GLubyte *__glXFlushRenderBuffer(__GLXcontext *, GLubyte *);
 637
 638 extern void __glXSendLargeChunk(__GLXcontext * gc, GLint requestNumber,
 639                                 GLint totalRequests,
 640                                 const GLvoid * data, GLint dataLen);
 641
 642 extern void __glXSendLargeCommand(__GLXcontext *, const GLvoid *, GLint,
 643                                   const GLvoid *, GLint);
 644
 645 /* Initialize the GLX extension for dpy */
 646 extern __GLXdisplayPrivate *__glXInitialize(Display *);
 647
 648 extern void __glXPreferEGL(int state);
 649
 650 /************************************************************************/
 651
 652 extern int __glXDebug;
 653
 654 /* This is per-thread storage in an MT environment */
 655 #if defined( PTHREADS )
 656
 657 extern void __glXSetCurrentContext(__GLXcontext * c);
 658
 659 # if defined( GLX_USE_TLS )
 660
 661 extern __thread void *__glX_tls_Context
 662    __attribute__ ((tls_model("initial-exec")));
 663
 664 #  define __glXGetCurrentContext() __glX_tls_Context
 665
 666 # else
 667
 668 extern __GLXcontext *__glXGetCurrentContext(void);
 669
 670 # endif /* defined( GLX_USE_TLS ) */
 671
 672 #else
 673
 674 extern __GLXcontext *__glXcurrentContext;
 675 #define __glXGetCurrentContext() __glXcurrentContext
 676 #define __glXSetCurrentContext(gc) __glXcurrentContext = gc
 677
 678 #endif /* defined( PTHREADS ) */
 679
 680 extern void __glXSetCurrentContextNull(void);
 681
 682 extern void __glXFreeContext(__GLXcontext *);
 683
 684
 685 /*
 686 ** Global lock for all threads in this address space using the GLX
 687 ** extension
 688 */
 689 #if defined( PTHREADS )
 690 extern pthread_mutex_t __glXmutex;
 691 #define __glXLock()    pthread_mutex_lock(&__glXmutex)
 692 #define __glXUnlock()  pthread_mutex_unlock(&__glXmutex)
 693 #else
 694 #define __glXLock()
 695 #define __glXUnlock()
 696 #endif
 697
 698 /*
 699 ** Setup for a command.  Initialize the extension for dpy if necessary.
 700 */
 701 extern CARD8 __glXSetupForCommand(Display * dpy);
 702
 703 /************************************************************************/
 704
 705 /*
 706 ** Data conversion and packing support.
 707 */
 708
 709 extern const GLuint __glXDefaultPixelStore[9];
 710
 711 /* Send an image to the server using RenderLarge. */
 712 extern void __glXSendLargeImage(__GLXcontext * gc, GLint compsize, GLint dim,
 713                                 GLint width, GLint height, GLint depth,
 714                                 GLenum format, GLenum type,
 715                                 const GLvoid * src, GLubyte * pc,
 716                                 GLubyte * modes);
 717
 718 /* Return the size, in bytes, of some pixel data */
 719 extern GLint __glImageSize(GLint, GLint, GLint, GLenum, GLenum, GLenum);
 720
 721 /* Return the number of elements per group of a specified format*/
 722 extern GLint __glElementsPerGroup(GLenum format, GLenum type);
 723
 724 /* Return the number of bytes per element, based on the element type (other
 725 ** than GL_BITMAP).
 726 */
 727 extern GLint __glBytesPerElement(GLenum type);
 728
 729 /*
 730 ** Fill the transport buffer with the data from the users buffer,
 731 ** applying some of the pixel store modes (unpack modes) to the data
 732 ** first.  As a side effect of this call, the "modes" field is
 733 ** updated to contain the modes needed by the server to decode the
 734 ** sent data.
 735 */
 736 extern void __glFillImage(__GLXcontext *, GLint, GLint, GLint, GLint, GLenum,
 737                           GLenum, const GLvoid *, GLubyte *, GLubyte *);
 738
 739 /* Copy map data with a stride into a packed buffer */
 740 extern void __glFillMap1f(GLint, GLint, GLint, const GLfloat *, GLubyte *);
 741 extern void __glFillMap1d(GLint, GLint, GLint, const GLdouble *, GLubyte *);
 742 extern void __glFillMap2f(GLint, GLint, GLint, GLint, GLint,
 743                           const GLfloat *, GLfloat *);
 744 extern void __glFillMap2d(GLint, GLint, GLint, GLint, GLint,
 745                           const GLdouble *, GLdouble *);
 746
 747 /*
 748 ** Empty an image out of the reply buffer into the clients memory applying
 749 ** the pack modes to pack back into the clients requested format.
 750 */
 751 extern void __glEmptyImage(__GLXcontext *, GLint, GLint, GLint, GLint, GLenum,
 752                            GLenum, const GLubyte *, GLvoid *);
 753
 754
 755 /*
 756 ** Allocate and Initialize Vertex Array client state, and free.
 757 */
 758 extern void __glXInitVertexArrayState(__GLXcontext *);
 759 extern void __glXFreeVertexArrayState(__GLXcontext *);
 760
 761 /*
 762 ** Inform the Server of the major and minor numbers and of the client
 763 ** libraries extension string.
 764 */
 765 extern void __glXClientInfo(Display * dpy, int opcode);
 766
 767 /************************************************************************/
 768
 769 /*
 770 ** Declarations that should be in Xlib
 771 */
 772 #ifdef __GL_USE_OUR_PROTOTYPES
 773 extern void _XFlush(Display *);
 774 extern Status _XReply(Display *, xReply *, int, Bool);
 775 extern void _XRead(Display *, void *, long);
 776 extern void _XSend(Display *, const void *, long);
 777 #endif
 778
 779
 780 extern void __glXInitializeVisualConfigFromTags(__GLcontextModes * config,
 781                                                 int count, const INT32 * bp,
 782                                                 Bool tagged_only,
 783                                                 Bool fbconfig_style_tags);
 784
 785 extern char *__glXQueryServerString(Display * dpy, int opcode,
 786                                     CARD32 screen, CARD32 name);
 787 extern char *__glXGetString(Display * dpy, int opcode,
 788                             CARD32 screen, CARD32 name);
 789
 790 extern char *__glXstrdup(const char *str);
 791
 792
 793 extern const char __glXGLClientVersion[];
 794 extern const char __glXGLClientExtensions[];
 795
 796 /* Get the unadjusted system time */
 797 extern int __glXGetUST(int64_t * ust);
 798
 799 extern GLboolean __glXGetMscRateOML(Display * dpy, GLXDrawable drawable,
 800                                     int32_t * numerator,
 801                                     int32_t * denominator);
 802
 803 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
 804 GLboolean
 805 __driGetMscRateOML(__DRIdrawable * draw,
 806                    int32_t * numerator, int32_t * denominator, void *private);
 807
 808 /* So that dri2.c:DRI2WireToEvent() can access
 809  * glx_info->codes->first_event */
 810 XExtDisplayInfo *__glXFindDisplay (Display *dpy);
 811
 812 extern __GLXDRIdrawable *
 813 GetGLXDRIDrawable(Display *dpy, GLXDrawable drawable, int *const scrn_num);
 814
 815 #endif
 816
 817 #endif /* !__GLX_client_h__ */