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 #include <X11/Xproto.h>
  41 #include <X11/Xlibint.h>
  42 #include <X11/extensions/extutil.h>
  43 #define GLX_GLXEXT_PROTOTYPES
  44 #include <GL/glx.h>
  45 #include <GL/glxext.h>
  46 #include <string.h>
  47 #include <stdlib.h>
  48 #include <stdio.h>
  49 #ifdef WIN32
  50 #include <stdint.h>
  51 #endif
  52 #include "GL/glxint.h"
  53 #include "GL/glxproto.h"
  54 #include "GL/internal/glcore.h"
  55 #include "glapi/glapitable.h"
  56 #include "glxhash.h"
  57 #if defined( PTHREADS )
  58 # include <pthread.h>
  59 #endif
  60
  61 #include "glxextensions.h"
  62
  63
  64 /* If we build the library with gcc's -fvisibility=hidden flag, we'll
  65  * use the PUBLIC macro to mark functions that are to be exported.
  66  *
  67  * We also need to define a USED attribute, so the optimizer doesn't
  68  * inline a static function that we later use in an alias. - ajax
  69  */
  70 #if defined(__GNUC__)
  71 #  define PUBLIC __attribute__((visibility("default")))
  72 #  define USED __attribute__((used))
  73 #else
  74 #  define PUBLIC
  75 #  define USED
  76 #endif
  77
  78
  79
  80 #define GLX_MAJOR_VERSION 1       /* current version numbers */
  81 #define GLX_MINOR_VERSION 4
  82
  83 #define __GLX_MAX_TEXTURE_UNITS 32
  84
  85 typedef struct __GLXscreenConfigsRec __GLXscreenConfigs;
  86 typedef struct __GLXcontextRec __GLXcontext;
  87 typedef struct __GLXdrawableRec __GLXdrawable;
  88 typedef struct __GLXdisplayPrivateRec __GLXdisplayPrivate;
  89 typedef struct _glapi_table __GLapi;
  90
  91 /************************************************************************/
  92
  93 #ifdef GLX_DIRECT_RENDERING
  94
  95 #define containerOf(ptr, type, member)              \
  96     (type *)( (char *)ptr - offsetof(type,member) )
  97
  98 extern void DRI_glXUseXFont(GLXContext CC,
  99                             Font font, int first, int count, int listbase);
 100
 101 #endif
 102
 103 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
 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    __GLXscreenConfigs *(*createScreen)(int screen, __GLXdisplayPrivate * priv);
 124 };
 125
 126 struct __GLXDRIscreenRec {
 127
 128    void (*destroyScreen)(__GLXscreenConfigs *psc);
 129
 130    __GLXcontext *(*createContext)(__GLXscreenConfigs *psc,
 131                                   const __GLcontextModes *mode,
 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    int (*getDrawableMSC)(__GLXscreenConfigs *psc, __GLXDRIdrawable *pdraw,
 144                          int64_t *ust, int64_t *msc, int64_t *sbc);
 145    int (*waitForMSC)(__GLXDRIdrawable *pdraw, int64_t target_msc,
 146                      int64_t divisor, int64_t remainder, int64_t *ust,
 147                      int64_t *msc, int64_t *sbc);
 148    int (*waitForSBC)(__GLXDRIdrawable *pdraw, int64_t target_sbc, int64_t *ust,
 149                      int64_t *msc, int64_t *sbc);
 150    int (*setSwapInterval)(__GLXDRIdrawable *pdraw, int interval);
 151    int (*getSwapInterval)(__GLXDRIdrawable *pdraw);
 152 };
 153
 154 struct __GLXDRIcontextRec
 155 {
 156    void (*destroyContext) (__GLXcontext *context);
 157    Bool(*bindContext) (__GLXcontext *context, __GLXDRIdrawable *pdraw,
 158                        __GLXDRIdrawable *pread);
 159    void (*unbindContext) (__GLXcontext *context);
 160 };
 161
 162 struct __GLXDRIdrawableRec
 163 {
 164    void (*destroyDrawable) (__GLXDRIdrawable * drawable);
 165
 166    XID xDrawable;
 167    XID drawable;
 168    __GLXscreenConfigs *psc;
 169    GLenum textureTarget;
 170    GLenum textureFormat;        /* EXT_texture_from_pixmap support */
 171    unsigned long eventMask;
 172 };
 173
 174 /*
 175 ** Function to create and DRI display data and initialize the display
 176 ** dependent methods.
 177 */
 178 extern __GLXDRIdisplay *driswCreateDisplay(Display * dpy);
 179 extern __GLXDRIdisplay *driCreateDisplay(Display * dpy);
 180 extern __GLXDRIdisplay *dri2CreateDisplay(Display * dpy);
 181 extern void dri2InvalidateBuffers(Display *dpy, XID drawable);
 182
 183
 184 /*
 185 ** Functions to obtain driver configuration information from a direct
 186 ** rendering client application
 187 */
 188 extern const char *glXGetScreenDriver(Display * dpy, int scrNum);
 189
 190 extern const char *glXGetDriverConfig(const char *driverName);
 191
 192 #endif
 193
 194 /************************************************************************/
 195
 196 #define __GL_CLIENT_ATTRIB_STACK_DEPTH 16
 197
 198 typedef struct __GLXpixelStoreModeRec
 199 {
 200    GLboolean swapEndian;
 201    GLboolean lsbFirst;
 202    GLuint rowLength;
 203    GLuint imageHeight;
 204    GLuint imageDepth;
 205    GLuint skipRows;
 206    GLuint skipPixels;
 207    GLuint skipImages;
 208    GLuint alignment;
 209 } __GLXpixelStoreMode;
 210
 211
 212 typedef struct __GLXattributeRec
 213 {
 214    GLuint mask;
 215
 216     /**
 217      * Pixel storage state.  Most of the pixel store mode state is kept
 218      * here and used by the client code to manage the packing and
 219      * unpacking of data sent to/received from the server.
 220      */
 221    __GLXpixelStoreMode storePack, storeUnpack;
 222
 223     /**
 224      * Is EXT_vertex_array / GL 1.1 DrawArrays protocol specifically
 225      * disabled?
 226      */
 227    GLboolean NoDrawArraysProtocol;
 228
 229     /**
 230      * Vertex Array storage state.  The vertex array component
 231      * state is stored here and is used to manage the packing of
 232      * DrawArrays data sent to the server.
 233      */
 234    struct array_state_vector *array_state;
 235 } __GLXattribute;
 236
 237 typedef struct __GLXattributeMachineRec
 238 {
 239    __GLXattribute *stack[__GL_CLIENT_ATTRIB_STACK_DEPTH];
 240    __GLXattribute **stackPointer;
 241 } __GLXattributeMachine;
 242
 243 struct glx_context_vtable {
 244    void (*wait_gl)(__GLXcontext *ctx);
 245    void (*wait_x)(__GLXcontext *ctx);
 246    void (*use_x_font)(__GLXcontext *ctx,
 247                       Font font, int first, int count, int listBase);
 248    void (*bind_tex_image)(Display * dpy,
 249                           GLXDrawable drawable,
 250                           int buffer, const int *attrib_list);
 251    void (*release_tex_image)(Display * dpy, GLXDrawable drawable, int buffer);
 252
 253 };
 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      * Maximum small render command size.  This is the smaller of 64k and
 393      * the size of the above buffer.
 394      */
 395    GLint maxSmallRenderCommandSize;
 396
 397     /**
 398      * Major opcode for the extension.  Copied here so a lookup isn't
 399      * needed.
 400      */
 401    GLint majorOpcode;
 402
 403     /**
 404      * Pointer to the mode used to create this context.
 405      */
 406    const __GLcontextModes *mode;
 407
 408 #ifdef GLX_DIRECT_RENDERING
 409 #ifdef GLX_USE_APPLEGL
 410    void *driContext;
 411    Bool do_destroy;
 412 #else
 413    __GLXDRIcontext *driContext;
 414 #endif
 415 #endif
 416
 417     /**
 418      * The current read-drawable for this context.  Will be None if this
 419      * context is not current to any drawable.
 420      *
 421      * \since Internal API version 20030606.
 422      */
 423    GLXDrawable currentReadable;
 424
 425    /**
 426     * Pointer to client-state data that is private to libGL.  This is only
 427     * used for indirect rendering contexts.
 428     *
 429     * No internal API version change was made for this change.  Client-side
 430     * drivers should NEVER use this data or even care that it exists.
 431     */
 432    void *client_state_private;
 433
 434    /**
 435     * Stored value for \c glXQueryContext attribute \c GLX_RENDER_TYPE.
 436     */
 437    int renderType;
 438
 439    /**
 440     * \name Raw server GL version
 441     *
 442     * True core GL version supported by the server.  This is the raw value
 443     * returned by the server, and it may not reflect what is actually
 444     * supported (or reported) by the client-side library.
 445     */
 446    /*@{ */
 447    int server_major;        /**< Major version number. */
 448    int server_minor;        /**< Minor version number. */
 449    /*@} */
 450
 451    /**
 452     * Thread ID we're currently current in. Zero if none.
 453     */
 454    unsigned long thread_id;
 455
 456    char gl_extension_bits[__GL_EXT_BYTES];
 457
 458    const struct glx_context_vtable *vtable;
 459 };
 460
 461 extern Bool
 462 glx_context_init(__GLXcontext *gc,
 463                  __GLXscreenConfigs *psc, const __GLcontextModes *fbconfig);
 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    __GLXdisplayPrivate *display;
 518
 519 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
 520     /**
 521      * Per screen direct rendering interface functions and data.
 522      */
 523    Display *dpy;
 524    int scr;
 525
 526    __GLXDRIscreen *driScreen;
 527 #endif
 528
 529     /**
 530      * Linked list of glx visuals and  fbconfigs for this screen.
 531      */
 532    __GLcontextModes *visuals, *configs;
 533
 534     /**
 535      * Per-screen dynamic GLX extension tracking.  The \c direct_support
 536      * field only contains enough bits for 64 extensions.  Should libGL
 537      * ever need to track more than 64 GLX extensions, we can safely grow
 538      * this field.  The \c __GLXscreenConfigs structure is not used outside
 539      * libGL.
 540      */
 541    /*@{ */
 542    unsigned char direct_support[8];
 543    GLboolean ext_list_first_time;
 544    /*@} */
 545
 546 };
 547
 548 /**
 549  * Per display private data.  One of these records exists for each display
 550  * that is using the OpenGL (GLX) extension.
 551  */
 552 struct __GLXdisplayPrivateRec
 553 {
 554    /* The extension protocol codes */
 555    XExtCodes *codes;
 556    struct __GLXdisplayPrivateRec *next;
 557
 558     /**
 559      * Back pointer to the display
 560      */
 561    Display *dpy;
 562
 563     /**
 564      * The \c majorOpcode is common to all connections to the same server.
 565      * It is also copied into the context structure.
 566      */
 567    int majorOpcode;
 568
 569     /**
 570      * \name Server Version
 571      *
 572      * Major and minor version returned by the server during initialization.
 573      */
 574    /*@{ */
 575    int majorVersion, minorVersion;
 576    /*@} */
 577
 578     /**
 579      * \name Storage for the servers GLX vendor and versions strings.
 580      *
 581      * These are the same for all screens on this display. These fields will
 582      * be filled in on demand.
 583      */
 584    /*@{ */
 585    const char *serverGLXvendor;
 586    const char *serverGLXversion;
 587    /*@} */
 588
 589     /**
 590      * Configurations of visuals for all screens on this display.
 591      * Also, per screen data which now includes the server \c GLX_EXTENSION
 592      * string.
 593      */
 594    __GLXscreenConfigs **screenConfigs;
 595
 596 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
 597    __glxHashTable *drawHash;
 598
 599     /**
 600      * Per display direct rendering interface functions and data.
 601      */
 602    __GLXDRIdisplay *driswDisplay;
 603    __GLXDRIdisplay *driDisplay;
 604    __GLXDRIdisplay *dri2Display;
 605 #endif
 606 };
 607
 608 extern int
 609 glx_screen_init(__GLXscreenConfigs *psc,
 610                 int screen, __GLXdisplayPrivate * priv);
 611
 612 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
 613 extern __GLXDRIdrawable *
 614 dri2GetGlxDrawableFromXDrawableId(Display *dpy, XID id);
 615 #endif
 616
 617 extern GLubyte *__glXFlushRenderBuffer(__GLXcontext *, GLubyte *);
 618
 619 extern void __glXSendLargeChunk(__GLXcontext * gc, GLint requestNumber,
 620                                 GLint totalRequests,
 621                                 const GLvoid * data, GLint dataLen);
 622
 623 extern void __glXSendLargeCommand(__GLXcontext *, const GLvoid *, GLint,
 624                                   const GLvoid *, GLint);
 625
 626 /* Initialize the GLX extension for dpy */
 627 extern __GLXdisplayPrivate *__glXInitialize(Display *);
 628
 629 extern void __glXPreferEGL(int state);
 630
 631 /************************************************************************/
 632
 633 extern int __glXDebug;
 634
 635 /* This is per-thread storage in an MT environment */
 636 #if defined( PTHREADS )
 637
 638 extern void __glXSetCurrentContext(__GLXcontext * c);
 639
 640 # if defined( GLX_USE_TLS )
 641
 642 extern __thread void *__glX_tls_Context
 643    __attribute__ ((tls_model("initial-exec")));
 644
 645 #  define __glXGetCurrentContext() __glX_tls_Context
 646
 647 # else
 648
 649 extern __GLXcontext *__glXGetCurrentContext(void);
 650
 651 # endif /* defined( GLX_USE_TLS ) */
 652
 653 #else
 654
 655 extern __GLXcontext *__glXcurrentContext;
 656 #define __glXGetCurrentContext() __glXcurrentContext
 657 #define __glXSetCurrentContext(gc) __glXcurrentContext = gc
 658
 659 #endif /* defined( PTHREADS ) */
 660
 661 extern void __glXSetCurrentContextNull(void);
 662
 663 extern void __glXFreeContext(__GLXcontext *);
 664
 665
 666 /*
 667 ** Global lock for all threads in this address space using the GLX
 668 ** extension
 669 */
 670 #if defined( PTHREADS )
 671 extern pthread_mutex_t __glXmutex;
 672 #define __glXLock()    pthread_mutex_lock(&__glXmutex)
 673 #define __glXUnlock()  pthread_mutex_unlock(&__glXmutex)
 674 #else
 675 #define __glXLock()
 676 #define __glXUnlock()
 677 #endif
 678
 679 /*
 680 ** Setup for a command.  Initialize the extension for dpy if necessary.
 681 */
 682 extern CARD8 __glXSetupForCommand(Display * dpy);
 683
 684 /************************************************************************/
 685
 686 /*
 687 ** Data conversion and packing support.
 688 */
 689
 690 extern const GLuint __glXDefaultPixelStore[9];
 691
 692 /* Send an image to the server using RenderLarge. */
 693 extern void __glXSendLargeImage(__GLXcontext * gc, GLint compsize, GLint dim,
 694                                 GLint width, GLint height, GLint depth,
 695                                 GLenum format, GLenum type,
 696                                 const GLvoid * src, GLubyte * pc,
 697                                 GLubyte * modes);
 698
 699 /* Return the size, in bytes, of some pixel data */
 700 extern GLint __glImageSize(GLint, GLint, GLint, GLenum, GLenum, GLenum);
 701
 702 /* Return the number of elements per group of a specified format*/
 703 extern GLint __glElementsPerGroup(GLenum format, GLenum type);
 704
 705 /* Return the number of bytes per element, based on the element type (other
 706 ** than GL_BITMAP).
 707 */
 708 extern GLint __glBytesPerElement(GLenum type);
 709
 710 /*
 711 ** Fill the transport buffer with the data from the users buffer,
 712 ** applying some of the pixel store modes (unpack modes) to the data
 713 ** first.  As a side effect of this call, the "modes" field is
 714 ** updated to contain the modes needed by the server to decode the
 715 ** sent data.
 716 */
 717 extern void __glFillImage(__GLXcontext *, GLint, GLint, GLint, GLint, GLenum,
 718                           GLenum, const GLvoid *, GLubyte *, GLubyte *);
 719
 720 /* Copy map data with a stride into a packed buffer */
 721 extern void __glFillMap1f(GLint, GLint, GLint, const GLfloat *, GLubyte *);
 722 extern void __glFillMap1d(GLint, GLint, GLint, const GLdouble *, GLubyte *);
 723 extern void __glFillMap2f(GLint, GLint, GLint, GLint, GLint,
 724                           const GLfloat *, GLfloat *);
 725 extern void __glFillMap2d(GLint, GLint, GLint, GLint, GLint,
 726                           const GLdouble *, GLdouble *);
 727
 728 /*
 729 ** Empty an image out of the reply buffer into the clients memory applying
 730 ** the pack modes to pack back into the clients requested format.
 731 */
 732 extern void __glEmptyImage(__GLXcontext *, GLint, GLint, GLint, GLint, GLenum,
 733                            GLenum, const GLubyte *, GLvoid *);
 734
 735
 736 /*
 737 ** Allocate and Initialize Vertex Array client state, and free.
 738 */
 739 extern void __glXInitVertexArrayState(__GLXcontext *);
 740 extern void __glXFreeVertexArrayState(__GLXcontext *);
 741
 742 /*
 743 ** Inform the Server of the major and minor numbers and of the client
 744 ** libraries extension string.
 745 */
 746 extern void __glXClientInfo(Display * dpy, int opcode);
 747
 748 /************************************************************************/
 749
 750 /*
 751 ** Declarations that should be in Xlib
 752 */
 753 #ifdef __GL_USE_OUR_PROTOTYPES
 754 extern void _XFlush(Display *);
 755 extern Status _XReply(Display *, xReply *, int, Bool);
 756 extern void _XRead(Display *, void *, long);
 757 extern void _XSend(Display *, const void *, long);
 758 #endif
 759
 760
 761 extern void __glXInitializeVisualConfigFromTags(__GLcontextModes * config,
 762                                                 int count, const INT32 * bp,
 763                                                 Bool tagged_only,
 764                                                 Bool fbconfig_style_tags);
 765
 766 extern char *__glXQueryServerString(Display * dpy, int opcode,
 767                                     CARD32 screen, CARD32 name);
 768 extern char *__glXGetString(Display * dpy, int opcode,
 769                             CARD32 screen, CARD32 name);
 770
 771 extern char *__glXstrdup(const char *str);
 772
 773
 774 extern const char __glXGLClientVersion[];
 775 extern const char __glXGLClientExtensions[];
 776
 777 /* Get the unadjusted system time */
 778 extern int __glXGetUST(int64_t * ust);
 779
 780 extern GLboolean __glXGetMscRateOML(Display * dpy, GLXDrawable drawable,
 781                                     int32_t * numerator,
 782                                     int32_t * denominator);
 783
 784 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
 785 extern GLboolean
 786 __glxGetMscRate(__GLXDRIdrawable *glxDraw,
 787                 int32_t * numerator, int32_t * denominator);
 788
 789 /* So that dri2.c:DRI2WireToEvent() can access
 790  * glx_info->codes->first_event */
 791 XExtDisplayInfo *__glXFindDisplay (Display *dpy);
 792
 793 extern __GLXDRIdrawable *
 794 GetGLXDRIDrawable(Display *dpy, GLXDrawable drawable, int *const scrn_num);
 795
 796 #endif
 797
 798 #endif /* !__GLX_client_h__ */