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 #ifndef GLX_USE_APPLEGL
  58 #include "glapi/glapitable.h"
  59 #endif
  60 #include "glxhash.h"
  61 #if 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__)
  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    void (*destroyScreen)(__GLXscreenConfigs *psc);
 130
 131    __GLXDRIcontext *(*createContext)(__GLXscreenConfigs *psc,
 132                                      const __GLcontextModes *mode,
 133                                      GLXContext gc,
 134                                      GLXContext shareList, int renderType);
 135
 136    __GLXDRIdrawable *(*createDrawable)(__GLXscreenConfigs *psc,
 137                                        XID drawable,
 138                                        GLXDrawable glxDrawable,
 139                                        const __GLcontextModes *modes);
 140
 141    int64_t (*swapBuffers)(__GLXDRIdrawable *pdraw, int64_t target_msc,
 142                           int64_t divisor, int64_t remainder);
 143    void (*copySubBuffer)(__GLXDRIdrawable *pdraw,
 144                          int x, int y, int width, int height);
 145    void (*waitX)(__GLXDRIdrawable *pdraw);
 146    void (*waitGL)(__GLXDRIdrawable *pdraw);
 147    int (*getDrawableMSC)(__GLXscreenConfigs *psc, __GLXDRIdrawable *pdraw,
 148                          int64_t *ust, int64_t *msc, int64_t *sbc);
 149    int (*waitForMSC)(__GLXDRIdrawable *pdraw, int64_t target_msc,
 150                      int64_t divisor, int64_t remainder, int64_t *ust,
 151                      int64_t *msc, int64_t *sbc);
 152    int (*waitForSBC)(__GLXDRIdrawable *pdraw, int64_t target_sbc, int64_t *ust,
 153                      int64_t *msc, int64_t *sbc);
 154    void (*setSwapInterval)(__GLXDRIdrawable *pdraw, int interval);
 155    int (*getSwapInterval)(__GLXDRIdrawable *pdraw);
 156 };
 157
 158 struct __GLXDRIcontextRec
 159 {
 160    void (*destroyContext) (__GLXDRIcontext * context,
 161                            __GLXscreenConfigs * psc, Display * dpy);
 162      Bool(*bindContext) (__GLXDRIcontext * context, __GLXDRIdrawable * pdraw,
 163                          __GLXDRIdrawable * pread);
 164
 165    void (*unbindContext) (__GLXDRIcontext * context);
 166 };
 167
 168 struct __GLXDRIdrawableRec
 169 {
 170    void (*destroyDrawable) (__GLXDRIdrawable * drawable);
 171
 172    XID xDrawable;
 173    XID drawable;
 174    __GLXscreenConfigs *psc;
 175    GLenum textureTarget;
 176    __DRIdrawable *driDrawable;
 177    GLenum textureFormat;        /* EXT_texture_from_pixmap support */
 178 };
 179
 180 /*
 181 ** Function to create and DRI display data and initialize the display
 182 ** dependent methods.
 183 */
 184 extern __GLXDRIdisplay *driswCreateDisplay(Display * dpy);
 185 extern __GLXDRIdisplay *driCreateDisplay(Display * dpy);
 186 extern __GLXDRIdisplay *dri2CreateDisplay(Display * dpy);
 187 extern void dri2InvalidateBuffers(Display *dpy, XID drawable);
 188
 189
 190 extern void DRI_glXUseXFont(Font font, int first, int count, int listbase);
 191
 192 /*
 193 ** Functions to obtain driver configuration information from a direct
 194 ** rendering client application
 195 */
 196 extern const char *glXGetScreenDriver(Display * dpy, int scrNum);
 197
 198 extern const char *glXGetDriverConfig(const char *driverName);
 199
 200 #endif
 201
 202 #ifdef GLX_USE_APPLEGL
 203 extern void DRI_glXUseXFont( Font font, int first, int count, int listbase );
 204 #endif
 205
 206 /************************************************************************/
 207
 208 #define __GL_CLIENT_ATTRIB_STACK_DEPTH 16
 209
 210 typedef struct __GLXpixelStoreModeRec
 211 {
 212    GLboolean swapEndian;
 213    GLboolean lsbFirst;
 214    GLuint rowLength;
 215    GLuint imageHeight;
 216    GLuint imageDepth;
 217    GLuint skipRows;
 218    GLuint skipPixels;
 219    GLuint skipImages;
 220    GLuint alignment;
 221 } __GLXpixelStoreMode;
 222
 223
 224 typedef struct __GLXattributeRec
 225 {
 226    GLuint mask;
 227
 228     /**
 229      * Pixel storage state.  Most of the pixel store mode state is kept
 230      * here and used by the client code to manage the packing and
 231      * unpacking of data sent to/received from the server.
 232      */
 233    __GLXpixelStoreMode storePack, storeUnpack;
 234
 235     /**
 236      * Is EXT_vertex_array / GL 1.1 DrawArrays protocol specifically
 237      * disabled?
 238      */
 239    GLboolean NoDrawArraysProtocol;
 240
 241     /**
 242      * Vertex Array storage state.  The vertex array component
 243      * state is stored here and is used to manage the packing of
 244      * DrawArrays data sent to the server.
 245      */
 246    struct array_state_vector *array_state;
 247 } __GLXattribute;
 248
 249 typedef struct __GLXattributeMachineRec
 250 {
 251    __GLXattribute *stack[__GL_CLIENT_ATTRIB_STACK_DEPTH];
 252    __GLXattribute **stackPointer;
 253 } __GLXattributeMachine;
 254
 255 /**
 256  * GLX state that needs to be kept on the client.  One of these records
 257  * exist for each context that has been made current by this client.
 258  */
 259 struct __GLXcontextRec
 260 {
 261     /**
 262      * \name Drawing command buffer.
 263      *
 264      * Drawing commands are packed into this buffer before being sent as a
 265      * single GLX protocol request.  The buffer is sent when it overflows or
 266      * is flushed by \c __glXFlushRenderBuffer.  \c pc is the next location
 267      * in the buffer to be filled.  \c limit is described above in the buffer
 268      * slop discussion.
 269      *
 270      * Commands that require large amounts of data to be transfered will
 271      * also use this buffer to hold a header that describes the large
 272      * command.
 273      *
 274      * These must be the first 6 fields since they are static initialized
 275      * in the dummy context in glxext.c
 276      */
 277    /*@{ */
 278    GLubyte *buf;
 279    GLubyte *pc;
 280    GLubyte *limit;
 281    GLubyte *bufEnd;
 282    GLint bufSize;
 283    /*@} */
 284
 285     /**
 286      * The XID of this rendering context.  When the context is created a
 287      * new XID is allocated.  This is set to None when the context is
 288      * destroyed but is still current to some thread. In this case the
 289      * context will be freed on next MakeCurrent.
 290      */
 291    XID xid;
 292
 293     /**
 294      * The XID of the \c shareList context.
 295      */
 296    XID share_xid;
 297
 298     /**
 299      * Screen number.
 300      */
 301    GLint screen;
 302    __GLXscreenConfigs *psc;
 303
 304     /**
 305      * \c GL_TRUE if the context was created with ImportContext, which
 306      * means the server-side context was created by another X client.
 307      */
 308    GLboolean imported;
 309
 310     /**
 311      * The context tag returned by MakeCurrent when this context is made
 312      * current. This tag is used to identify the context that a thread has
 313      * current so that proper server context management can be done.  It is
 314      * used for all context specific commands (i.e., \c Render, \c RenderLarge,
 315      * \c WaitX, \c WaitGL, \c UseXFont, and \c MakeCurrent (for the old
 316      * context)).
 317      */
 318    GLXContextTag currentContextTag;
 319
 320     /**
 321      * \name Rendering mode
 322      *
 323      * The rendering mode is kept on the client as well as the server.
 324      * When \c glRenderMode is called, the buffer associated with the
 325      * previous rendering mode (feedback or select) is filled.
 326      */
 327    /*@{ */
 328    GLenum renderMode;
 329    GLfloat *feedbackBuf;
 330    GLuint *selectBuf;
 331    /*@} */
 332
 333     /**
 334      * This is \c GL_TRUE if the pixel unpack modes are such that an image
 335      * can be unpacked from the clients memory by just copying.  It may
 336      * still be true that the server will have to do some work.  This
 337      * just promises that a straight copy will fetch the correct bytes.
 338      */
 339    GLboolean fastImageUnpack;
 340
 341     /**
 342      * Fill newImage with the unpacked form of \c oldImage getting it
 343      * ready for transport to the server.
 344      */
 345    void (*fillImage) (__GLXcontext *, GLint, GLint, GLint, GLint, GLenum,
 346                       GLenum, const GLvoid *, GLubyte *, GLubyte *);
 347
 348     /**
 349      * Client side attribs.
 350      */
 351    __GLXattributeMachine attributes;
 352
 353     /**
 354      * Client side error code.  This is set when client side gl API
 355      * routines need to set an error because of a bad enumerant or
 356      * running out of memory, etc.
 357      */
 358    GLenum error;
 359
 360     /**
 361      * Whether this context does direct rendering.
 362      */
 363    Bool isDirect;
 364
 365     /**
 366      * \c dpy of current display for this context.  Will be \c NULL if not
 367      * current to any display, or if this is the "dummy context".
 368      */
 369    Display *currentDpy;
 370
 371     /**
 372      * The current drawable for this context.  Will be None if this
 373      * context is not current to any drawable.  currentReadable is below.
 374      */
 375    GLXDrawable currentDrawable;
 376
 377     /**
 378      * \name GL Constant Strings
 379      *
 380      * Constant strings that describe the server implementation
 381      * These pertain to GL attributes, not to be confused with
 382      * GLX versioning attributes.
 383      */
 384    /*@{ */
 385    GLubyte *vendor;
 386    GLubyte *renderer;
 387    GLubyte *version;
 388    GLubyte *extensions;
 389    /*@} */
 390
 391     /**
 392      * Record the dpy this context was created on for later freeing
 393      */
 394    Display *createDpy;
 395
 396     /**
 397      * Maximum small render command size.  This is the smaller of 64k and
 398      * the size of the above buffer.
 399      */
 400    GLint maxSmallRenderCommandSize;
 401
 402     /**
 403      * Major opcode for the extension.  Copied here so a lookup isn't
 404      * needed.
 405      */
 406    GLint majorOpcode;
 407
 408     /**
 409      * Pointer to the mode used to create this context.
 410      */
 411    const __GLcontextModes *mode;
 412
 413 #ifdef GLX_DIRECT_RENDERING
 414    __GLXDRIcontext *driContext;
 415    __DRIcontext *__driContext;
 416 #endif
 417
 418     /**
 419      * The current read-drawable for this context.  Will be None if this
 420      * context is not current to any drawable.
 421      *
 422      * \since Internal API version 20030606.
 423      */
 424    GLXDrawable currentReadable;
 425
 426    /**
 427     * Pointer to client-state data that is private to libGL.  This is only
 428     * used for indirect rendering contexts.
 429     *
 430     * No internal API version change was made for this change.  Client-side
 431     * drivers should NEVER use this data or even care that it exists.
 432     */
 433    void *client_state_private;
 434
 435    /**
 436     * Stored value for \c glXQueryContext attribute \c GLX_RENDER_TYPE.
 437     */
 438    int renderType;
 439
 440    /**
 441     * \name Raw server GL version
 442     *
 443     * True core GL version supported by the server.  This is the raw value
 444     * returned by the server, and it may not reflect what is actually
 445     * supported (or reported) by the client-side library.
 446     */
 447    /*@{ */
 448    int server_major;        /**< Major version number. */
 449    int server_minor;        /**< Minor version number. */
 450    /*@} */
 451
 452    /**
 453     * Thread ID we're currently current in. Zero if none.
 454     */
 455    unsigned long thread_id;
 456
 457    char gl_extension_bits[__GL_EXT_BYTES];
 458
 459 #ifdef GLX_USE_APPLEGL
 460    void *apple;
 461    Bool do_destroy;
 462 #endif
 463 };
 464
 465 #define __glXSetError(gc,code)  \
 466    if (!(gc)->error) {          \
 467       (gc)->error = code;       \
 468    }
 469
 470 extern void __glFreeAttributeState(__GLXcontext *);
 471
 472 /************************************************************************/
 473
 474 /**
 475  * The size of the largest drawing command known to the implementation
 476  * that will use the GLXRender GLX command.  In this case it is
 477  * \c glPolygonStipple.
 478  */
 479 #define __GLX_MAX_SMALL_RENDER_CMD_SIZE 156
 480
 481 /**
 482  * To keep the implementation fast, the code uses a "limit" pointer
 483  * to determine when the drawing command buffer is too full to hold
 484  * another fixed size command.  This constant defines the amount of
 485  * space that must always be available in the drawing command buffer
 486  * at all times for the implementation to work.  It is important that
 487  * the number be just large enough, but not so large as to reduce the
 488  * efficacy of the buffer.  The "+32" is just to keep the code working
 489  * in case somebody counts wrong.
 490  */
 491 #define __GLX_BUFFER_LIMIT_SIZE (__GLX_MAX_SMALL_RENDER_CMD_SIZE + 32)
 492
 493 /**
 494  * This implementation uses a smaller threshold for switching
 495  * to the RenderLarge protocol than the protcol requires so that
 496  * large copies don't occur.
 497  */
 498 #define __GLX_RENDER_CMD_SIZE_LIMIT 4096
 499
 500 /**
 501  * One of these records exists per screen of the display.  It contains
 502  * a pointer to the config data for that screen (if the screen supports GL).
 503  */
 504 struct __GLXscreenConfigsRec
 505 {
 506     /**
 507      * GLX extension string reported by the X-server.
 508      */
 509    const char *serverGLXexts;
 510
 511     /**
 512      * GLX extension string to be reported to applications.  This is the
 513      * set of extensions that the application can actually use.
 514      */
 515    char *effectiveGLXexts;
 516
 517 #ifdef GLX_DIRECT_RENDERING
 518     /**
 519      * Per screen direct rendering interface functions and data.
 520      */
 521    __DRIscreen *__driScreen;
 522    const __DRIcoreExtension *core;
 523    const __DRIlegacyExtension *legacy;
 524    const __DRIswrastExtension *swrast;
 525    const __DRIdri2Extension *dri2;
 526    __glxHashTable *drawHash;
 527    Display *dpy;
 528    int scr, fd;
 529    void *driver;
 530
 531    __GLXDRIscreen *driScreen;
 532
 533    const __DRIconfig **driver_configs;
 534
 535 #ifdef __DRI_COPY_SUB_BUFFER
 536    const __DRIcopySubBufferExtension *driCopySubBuffer;
 537 #endif
 538
 539 #ifdef __DRI_SWAP_CONTROL
 540    const __DRIswapControlExtension *swapControl;
 541 #endif
 542
 543 #ifdef __DRI_ALLOCATE
 544    const __DRIallocateExtension *allocate;
 545 #endif
 546
 547 #ifdef __DRI_FRAME_TRACKING
 548    const __DRIframeTrackingExtension *frameTracking;
 549 #endif
 550
 551 #ifdef __DRI_MEDIA_STREAM_COUNTER
 552    const __DRImediaStreamCounterExtension *msc;
 553 #endif
 554
 555 #ifdef __DRI_TEX_BUFFER
 556    const __DRItexBufferExtension *texBuffer;
 557 #endif
 558
 559 #ifdef __DRI2_FLUSH
 560    const __DRI2flushExtension *f;
 561 #endif
 562
 563 #endif
 564
 565     /**
 566      * Linked list of glx visuals and  fbconfigs for this screen.
 567      */
 568    __GLcontextModes *visuals, *configs;
 569
 570     /**
 571      * Per-screen dynamic GLX extension tracking.  The \c direct_support
 572      * field only contains enough bits for 64 extensions.  Should libGL
 573      * ever need to track more than 64 GLX extensions, we can safely grow
 574      * this field.  The \c __GLXscreenConfigs structure is not used outside
 575      * libGL.
 576      */
 577    /*@{ */
 578    unsigned char direct_support[8];
 579    GLboolean ext_list_first_time;
 580    /*@} */
 581
 582 };
 583
 584 /**
 585  * Per display private data.  One of these records exists for each display
 586  * that is using the OpenGL (GLX) extension.
 587  */
 588 struct __GLXdisplayPrivateRec
 589 {
 590     /**
 591      * Back pointer to the display
 592      */
 593    Display *dpy;
 594
 595     /**
 596      * The \c majorOpcode is common to all connections to the same server.
 597      * It is also copied into the context structure.
 598      */
 599    int majorOpcode;
 600
 601     /**
 602      * \name Server Version
 603      *
 604      * Major and minor version returned by the server during initialization.
 605      */
 606    /*@{ */
 607    int majorVersion, minorVersion;
 608    /*@} */
 609
 610     /**
 611      * \name Storage for the servers GLX vendor and versions strings.
 612      *
 613      * These are the same for all screens on this display. These fields will
 614      * be filled in on demand.
 615      */
 616    /*@{ */
 617    const char *serverGLXvendor;
 618    const char *serverGLXversion;
 619    /*@} */
 620
 621     /**
 622      * Configurations of visuals for all screens on this display.
 623      * Also, per screen data which now includes the server \c GLX_EXTENSION
 624      * string.
 625      */
 626    __GLXscreenConfigs *screenConfigs;
 627
 628 #ifdef GLX_DIRECT_RENDERING
 629     /**
 630      * Per display direct rendering interface functions and data.
 631      */
 632    __GLXDRIdisplay *driswDisplay;
 633    __GLXDRIdisplay *driDisplay;
 634    __GLXDRIdisplay *dri2Display;
 635 #endif
 636 };
 637
 638
 639 extern GLubyte *__glXFlushRenderBuffer(__GLXcontext *, GLubyte *);
 640
 641 #ifndef GLX_USE_APPLEGL
 642 extern void __glXSendLargeChunk(__GLXcontext * gc, GLint requestNumber,
 643                                 GLint totalRequests,
 644                                 const GLvoid * data, GLint dataLen);
 645
 646 extern void __glXSendLargeCommand(__GLXcontext *, const GLvoid *, GLint,
 647                                   const GLvoid *, GLint);
 648 #endif
 649
 650 /* Initialize the GLX extension for dpy */
 651 extern __GLXdisplayPrivate *__glXInitialize(Display *);
 652
 653 extern void __glXPreferEGL(int state);
 654
 655 /************************************************************************/
 656
 657 extern int __glXDebug;
 658
 659 /* This is per-thread storage in an MT environment */
 660 #if defined( PTHREADS )
 661
 662 extern void __glXSetCurrentContext(__GLXcontext * c);
 663
 664 # if defined( GLX_USE_TLS )
 665
 666 extern __thread void *__glX_tls_Context
 667    __attribute__ ((tls_model("initial-exec")));
 668
 669 #  define __glXGetCurrentContext() __glX_tls_Context
 670
 671 # else
 672
 673 extern __GLXcontext *__glXGetCurrentContext(void);
 674
 675 # endif /* defined( GLX_USE_TLS ) */
 676
 677 #else
 678
 679 extern __GLXcontext *__glXcurrentContext;
 680 #define __glXGetCurrentContext() __glXcurrentContext
 681 #define __glXSetCurrentContext(gc) __glXcurrentContext = gc
 682
 683 #endif /* defined( PTHREADS ) */
 684
 685 extern void __glXSetCurrentContextNull(void);
 686
 687 extern void __glXFreeContext(__GLXcontext *);
 688
 689
 690 /*
 691 ** Global lock for all threads in this address space using the GLX
 692 ** extension
 693 */
 694 #if defined( PTHREADS )
 695 extern pthread_mutex_t __glXmutex;
 696 #define __glXLock()    pthread_mutex_lock(&__glXmutex)
 697 #define __glXUnlock()  pthread_mutex_unlock(&__glXmutex)
 698 #else
 699 #define __glXLock()
 700 #define __glXUnlock()
 701 #endif
 702
 703 /*
 704 ** Setup for a command.  Initialize the extension for dpy if necessary.
 705 */
 706 extern CARD8 __glXSetupForCommand(Display * dpy);
 707
 708 /************************************************************************/
 709
 710 /*
 711 ** Data conversion and packing support.
 712 */
 713
 714 extern const GLuint __glXDefaultPixelStore[9];
 715
 716 /* Send an image to the server using RenderLarge. */
 717 extern void __glXSendLargeImage(__GLXcontext * gc, GLint compsize, GLint dim,
 718                                 GLint width, GLint height, GLint depth,
 719                                 GLenum format, GLenum type,
 720                                 const GLvoid * src, GLubyte * pc,
 721                                 GLubyte * modes);
 722
 723 /* Return the size, in bytes, of some pixel data */
 724 extern GLint __glImageSize(GLint, GLint, GLint, GLenum, GLenum, GLenum);
 725
 726 /* Return the number of elements per group of a specified format*/
 727 extern GLint __glElementsPerGroup(GLenum format, GLenum type);
 728
 729 /* Return the number of bytes per element, based on the element type (other
 730 ** than GL_BITMAP).
 731 */
 732 extern GLint __glBytesPerElement(GLenum type);
 733
 734 /*
 735 ** Fill the transport buffer with the data from the users buffer,
 736 ** applying some of the pixel store modes (unpack modes) to the data
 737 ** first.  As a side effect of this call, the "modes" field is
 738 ** updated to contain the modes needed by the server to decode the
 739 ** sent data.
 740 */
 741 extern void __glFillImage(__GLXcontext *, GLint, GLint, GLint, GLint, GLenum,
 742                           GLenum, const GLvoid *, GLubyte *, GLubyte *);
 743
 744 /* Copy map data with a stride into a packed buffer */
 745 extern void __glFillMap1f(GLint, GLint, GLint, const GLfloat *, GLubyte *);
 746 extern void __glFillMap1d(GLint, GLint, GLint, const GLdouble *, GLubyte *);
 747 extern void __glFillMap2f(GLint, GLint, GLint, GLint, GLint,
 748                           const GLfloat *, GLfloat *);
 749 extern void __glFillMap2d(GLint, GLint, GLint, GLint, GLint,
 750                           const GLdouble *, GLdouble *);
 751
 752 /*
 753 ** Empty an image out of the reply buffer into the clients memory applying
 754 ** the pack modes to pack back into the clients requested format.
 755 */
 756 extern void __glEmptyImage(__GLXcontext *, GLint, GLint, GLint, GLint, GLenum,
 757                            GLenum, const GLubyte *, GLvoid *);
 758
 759
 760 /*
 761 ** Allocate and Initialize Vertex Array client state, and free.
 762 */
 763 extern void __glXInitVertexArrayState(__GLXcontext *);
 764 extern void __glXFreeVertexArrayState(__GLXcontext *);
 765
 766 /*
 767 ** Inform the Server of the major and minor numbers and of the client
 768 ** libraries extension string.
 769 */
 770 extern void __glXClientInfo(Display * dpy, int opcode);
 771
 772 /************************************************************************/
 773
 774 /*
 775 ** Declarations that should be in Xlib
 776 */
 777 #ifdef __GL_USE_OUR_PROTOTYPES
 778 extern void _XFlush(Display *);
 779 extern Status _XReply(Display *, xReply *, int, Bool);
 780 extern void _XRead(Display *, void *, long);
 781 extern void _XSend(Display *, const void *, long);
 782 #endif
 783
 784
 785 extern void __glXInitializeVisualConfigFromTags(__GLcontextModes * config,
 786                                                 int count, const INT32 * bp,
 787                                                 Bool tagged_only,
 788                                                 Bool fbconfig_style_tags);
 789
 790 extern char *__glXQueryServerString(Display * dpy, int opcode,
 791                                     CARD32 screen, CARD32 name);
 792 extern char *__glXGetString(Display * dpy, int opcode,
 793                             CARD32 screen, CARD32 name);
 794
 795 extern char *__glXstrdup(const char *str);
 796
 797
 798 extern const char __glXGLClientVersion[];
 799 extern const char __glXGLClientExtensions[];
 800
 801 /* Get the unadjusted system time */
 802 extern int __glXGetUST(int64_t * ust);
 803
 804 extern GLboolean __glXGetMscRateOML(Display * dpy, GLXDrawable drawable,
 805                                     int32_t * numerator,
 806                                     int32_t * denominator);
 807
 808 #ifdef GLX_DIRECT_RENDERING
 809 GLboolean
 810 __driGetMscRateOML(__DRIdrawable * draw,
 811                    int32_t * numerator, int32_t * denominator, void *private);
 812
 813 /* So that dri2.c:DRI2WireToEvent() can access
 814  * glx_info->codes->first_event */
 815 XExtDisplayInfo *__glXFindDisplay (Display *dpy);
 816
 817 extern __GLXDRIdrawable *
 818 GetGLXDRIDrawable(Display *dpy, GLXDrawable drawable, int *const scrn_num);
 819
 820 #endif
 821
 822 #endif /* !__GLX_client_h__ */