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/Xfuncproto.h>
  43 #include <X11/extensions/extutil.h>
  44 #define GLX_GLXEXT_PROTOTYPES
  45 #include <GL/glx.h>
  46 #include <GL/glxext.h>
  47 #include <string.h>
  48 #include <stdlib.h>
  49 #include <stdio.h>
  50 #ifdef WIN32
  51 #include <stdint.h>
  52 #endif
  53 #include "GL/glxproto.h"
  54 #include "glapi/glapitable.h"
  55 #include "glxconfig.h"
  56 #include "glxhash.h"
  57 #if defined( PTHREADS )
  58 # include <pthread.h>
  59 #endif
  60
  61 #include "glxextensions.h"
  62
  63 #define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0]))
  64
  65 #define GLX_MAJOR_VERSION 1       /* current version numbers */
  66 #define GLX_MINOR_VERSION 4
  67
  68 #define __GLX_MAX_TEXTURE_UNITS 32
  69
  70 typedef struct __GLXcontextRec __GLXcontext;
  71 typedef struct __GLXdrawableRec __GLXdrawable;
  72 typedef struct __GLXdisplayPrivateRec __GLXdisplayPrivate;
  73 typedef struct _glapi_table __GLapi;
  74
  75 /************************************************************************/
  76
  77 #ifdef GLX_DIRECT_RENDERING
  78
  79 extern void DRI_glXUseXFont(GLXContext CC,
  80                             Font font, int first, int count, int listbase);
  81
  82 #endif
  83
  84 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
  85
  86 /**
  87  * Display dependent methods.  This structure is initialized during the
  88  * \c driCreateDisplay call.
  89  */
  90 typedef struct __GLXDRIdisplayRec __GLXDRIdisplay;
  91 typedef struct __GLXDRIscreenRec __GLXDRIscreen;
  92 typedef struct __GLXDRIdrawableRec __GLXDRIdrawable;
  93 typedef struct __GLXDRIcontextRec __GLXDRIcontext;
  94
  95 #include "glxextensions.h"
  96
  97 struct __GLXDRIdisplayRec
  98 {
  99     /**
 100      * Method to destroy the private DRI display data.
 101      */
 102    void (*destroyDisplay) (__GLXDRIdisplay * display);
 103
 104    struct glx_screen *(*createScreen)(int screen, __GLXdisplayPrivate * priv);
 105 };
 106
 107 struct __GLXDRIscreenRec {
 108
 109    void (*destroyScreen)(struct glx_screen *psc);
 110
 111    __GLXcontext *(*createContext)(struct glx_screen *psc,
 112                                   struct glx_config *config,
 113                                   GLXContext shareList, int renderType);
 114
 115    __GLXDRIdrawable *(*createDrawable)(struct glx_screen *psc,
 116                                        XID drawable,
 117                                        GLXDrawable glxDrawable,
 118                                        struct glx_config *config);
 119
 120    int64_t (*swapBuffers)(__GLXDRIdrawable *pdraw, int64_t target_msc,
 121                           int64_t divisor, int64_t remainder);
 122    void (*copySubBuffer)(__GLXDRIdrawable *pdraw,
 123                          int x, int y, int width, int height);
 124    int (*getDrawableMSC)(struct glx_screen *psc, __GLXDRIdrawable *pdraw,
 125                          int64_t *ust, int64_t *msc, int64_t *sbc);
 126    int (*waitForMSC)(__GLXDRIdrawable *pdraw, int64_t target_msc,
 127                      int64_t divisor, int64_t remainder, int64_t *ust,
 128                      int64_t *msc, int64_t *sbc);
 129    int (*waitForSBC)(__GLXDRIdrawable *pdraw, int64_t target_sbc, int64_t *ust,
 130                      int64_t *msc, int64_t *sbc);
 131    int (*setSwapInterval)(__GLXDRIdrawable *pdraw, int interval);
 132    int (*getSwapInterval)(__GLXDRIdrawable *pdraw);
 133 };
 134
 135 struct __GLXDRIcontextRec
 136 {
 137    Bool(*bindContext) (__GLXcontext *context, __GLXDRIdrawable *pdraw,
 138                        __GLXDRIdrawable *pread);
 139    void (*unbindContext) (__GLXcontext *context);
 140 };
 141
 142 struct __GLXDRIdrawableRec
 143 {
 144    void (*destroyDrawable) (__GLXDRIdrawable * drawable);
 145
 146    XID xDrawable;
 147    XID drawable;
 148    struct glx_screen *psc;
 149    GLenum textureTarget;
 150    GLenum textureFormat;        /* EXT_texture_from_pixmap support */
 151    unsigned long eventMask;
 152 };
 153
 154 /*
 155 ** Function to create and DRI display data and initialize the display
 156 ** dependent methods.
 157 */
 158 extern __GLXDRIdisplay *driswCreateDisplay(Display * dpy);
 159 extern __GLXDRIdisplay *driCreateDisplay(Display * dpy);
 160 extern __GLXDRIdisplay *dri2CreateDisplay(Display * dpy);
 161 extern void dri2InvalidateBuffers(Display *dpy, XID drawable);
 162
 163
 164 /*
 165 ** Functions to obtain driver configuration information from a direct
 166 ** rendering client application
 167 */
 168 extern const char *glXGetScreenDriver(Display * dpy, int scrNum);
 169
 170 extern const char *glXGetDriverConfig(const char *driverName);
 171
 172 #endif
 173
 174 /************************************************************************/
 175
 176 #define __GL_CLIENT_ATTRIB_STACK_DEPTH 16
 177
 178 typedef struct __GLXpixelStoreModeRec
 179 {
 180    GLboolean swapEndian;
 181    GLboolean lsbFirst;
 182    GLuint rowLength;
 183    GLuint imageHeight;
 184    GLuint imageDepth;
 185    GLuint skipRows;
 186    GLuint skipPixels;
 187    GLuint skipImages;
 188    GLuint alignment;
 189 } __GLXpixelStoreMode;
 190
 191
 192 typedef struct __GLXattributeRec
 193 {
 194    GLuint mask;
 195
 196     /**
 197      * Pixel storage state.  Most of the pixel store mode state is kept
 198      * here and used by the client code to manage the packing and
 199      * unpacking of data sent to/received from the server.
 200      */
 201    __GLXpixelStoreMode storePack, storeUnpack;
 202
 203     /**
 204      * Is EXT_vertex_array / GL 1.1 DrawArrays protocol specifically
 205      * disabled?
 206      */
 207    GLboolean NoDrawArraysProtocol;
 208
 209     /**
 210      * Vertex Array storage state.  The vertex array component
 211      * state is stored here and is used to manage the packing of
 212      * DrawArrays data sent to the server.
 213      */
 214    struct array_state_vector *array_state;
 215 } __GLXattribute;
 216
 217 typedef struct __GLXattributeMachineRec
 218 {
 219    __GLXattribute *stack[__GL_CLIENT_ATTRIB_STACK_DEPTH];
 220    __GLXattribute **stackPointer;
 221 } __GLXattributeMachine;
 222
 223 struct glx_context_vtable {
 224    void (*destroy)(__GLXcontext *ctx);
 225    void (*wait_gl)(__GLXcontext *ctx);
 226    void (*wait_x)(__GLXcontext *ctx);
 227    void (*use_x_font)(__GLXcontext *ctx,
 228                       Font font, int first, int count, int listBase);
 229    void (*bind_tex_image)(Display * dpy,
 230                           GLXDrawable drawable,
 231                           int buffer, const int *attrib_list);
 232    void (*release_tex_image)(Display * dpy, GLXDrawable drawable, int buffer);
 233
 234 };
 235
 236 extern void
 237 glx_send_destroy_context(Display *dpy, XID xid);
 238
 239 /**
 240  * GLX state that needs to be kept on the client.  One of these records
 241  * exist for each context that has been made current by this client.
 242  */
 243 struct __GLXcontextRec
 244 {
 245     /**
 246      * \name Drawing command buffer.
 247      *
 248      * Drawing commands are packed into this buffer before being sent as a
 249      * single GLX protocol request.  The buffer is sent when it overflows or
 250      * is flushed by \c __glXFlushRenderBuffer.  \c pc is the next location
 251      * in the buffer to be filled.  \c limit is described above in the buffer
 252      * slop discussion.
 253      *
 254      * Commands that require large amounts of data to be transfered will
 255      * also use this buffer to hold a header that describes the large
 256      * command.
 257      *
 258      * These must be the first 6 fields since they are static initialized
 259      * in the dummy context in glxext.c
 260      */
 261    /*@{ */
 262    GLubyte *buf;
 263    GLubyte *pc;
 264    GLubyte *limit;
 265    GLubyte *bufEnd;
 266    GLint bufSize;
 267    /*@} */
 268
 269     /**
 270      * The XID of this rendering context.  When the context is created a
 271      * new XID is allocated.  This is set to None when the context is
 272      * destroyed but is still current to some thread. In this case the
 273      * context will be freed on next MakeCurrent.
 274      */
 275    XID xid;
 276
 277     /**
 278      * The XID of the \c shareList context.
 279      */
 280    XID share_xid;
 281
 282     /**
 283      * Screen number.
 284      */
 285    GLint screen;
 286    struct glx_screen *psc;
 287
 288     /**
 289      * \c GL_TRUE if the context was created with ImportContext, which
 290      * means the server-side context was created by another X client.
 291      */
 292    GLboolean imported;
 293
 294     /**
 295      * The context tag returned by MakeCurrent when this context is made
 296      * current. This tag is used to identify the context that a thread has
 297      * current so that proper server context management can be done.  It is
 298      * used for all context specific commands (i.e., \c Render, \c RenderLarge,
 299      * \c WaitX, \c WaitGL, \c UseXFont, and \c MakeCurrent (for the old
 300      * context)).
 301      */
 302    GLXContextTag currentContextTag;
 303
 304     /**
 305      * \name Rendering mode
 306      *
 307      * The rendering mode is kept on the client as well as the server.
 308      * When \c glRenderMode is called, the buffer associated with the
 309      * previous rendering mode (feedback or select) is filled.
 310      */
 311    /*@{ */
 312    GLenum renderMode;
 313    GLfloat *feedbackBuf;
 314    GLuint *selectBuf;
 315    /*@} */
 316
 317     /**
 318      * This is \c GL_TRUE if the pixel unpack modes are such that an image
 319      * can be unpacked from the clients memory by just copying.  It may
 320      * still be true that the server will have to do some work.  This
 321      * just promises that a straight copy will fetch the correct bytes.
 322      */
 323    GLboolean fastImageUnpack;
 324
 325     /**
 326      * Fill newImage with the unpacked form of \c oldImage getting it
 327      * ready for transport to the server.
 328      */
 329    void (*fillImage) (__GLXcontext *, GLint, GLint, GLint, GLint, GLenum,
 330                       GLenum, const GLvoid *, GLubyte *, GLubyte *);
 331
 332     /**
 333      * Client side attribs.
 334      */
 335    __GLXattributeMachine attributes;
 336
 337     /**
 338      * Client side error code.  This is set when client side gl API
 339      * routines need to set an error because of a bad enumerant or
 340      * running out of memory, etc.
 341      */
 342    GLenum error;
 343
 344     /**
 345      * Whether this context does direct rendering.
 346      */
 347    Bool isDirect;
 348
 349     /**
 350      * \c dpy of current display for this context.  Will be \c NULL if not
 351      * current to any display, or if this is the "dummy context".
 352      */
 353    Display *currentDpy;
 354
 355     /**
 356      * The current drawable for this context.  Will be None if this
 357      * context is not current to any drawable.  currentReadable is below.
 358      */
 359    GLXDrawable currentDrawable;
 360
 361     /**
 362      * \name GL Constant Strings
 363      *
 364      * Constant strings that describe the server implementation
 365      * These pertain to GL attributes, not to be confused with
 366      * GLX versioning attributes.
 367      */
 368    /*@{ */
 369    GLubyte *vendor;
 370    GLubyte *renderer;
 371    GLubyte *version;
 372    GLubyte *extensions;
 373    /*@} */
 374
 375     /**
 376      * Maximum small render command size.  This is the smaller of 64k and
 377      * the size of the above buffer.
 378      */
 379    GLint maxSmallRenderCommandSize;
 380
 381     /**
 382      * Major opcode for the extension.  Copied here so a lookup isn't
 383      * needed.
 384      */
 385    GLint majorOpcode;
 386
 387     /**
 388      * Pointer to the config used to create this context.
 389      */
 390    struct glx_config *config;
 391
 392 #ifdef GLX_DIRECT_RENDERING
 393 #ifdef GLX_USE_APPLEGL
 394    void *driContext;
 395    Bool do_destroy;
 396 #else
 397    __GLXDRIcontext *driContext;
 398 #endif
 399 #endif
 400
 401     /**
 402      * The current read-drawable for this context.  Will be None if this
 403      * context is not current to any drawable.
 404      *
 405      * \since Internal API version 20030606.
 406      */
 407    GLXDrawable currentReadable;
 408
 409    /**
 410     * Pointer to client-state data that is private to libGL.  This is only
 411     * used for indirect rendering contexts.
 412     *
 413     * No internal API version change was made for this change.  Client-side
 414     * drivers should NEVER use this data or even care that it exists.
 415     */
 416    void *client_state_private;
 417
 418    /**
 419     * Stored value for \c glXQueryContext attribute \c GLX_RENDER_TYPE.
 420     */
 421    int renderType;
 422
 423    /**
 424     * \name Raw server GL version
 425     *
 426     * True core GL version supported by the server.  This is the raw value
 427     * returned by the server, and it may not reflect what is actually
 428     * supported (or reported) by the client-side library.
 429     */
 430    /*@{ */
 431    int server_major;        /**< Major version number. */
 432    int server_minor;        /**< Minor version number. */
 433    /*@} */
 434
 435    /**
 436     * Thread ID we're currently current in. Zero if none.
 437     */
 438    unsigned long thread_id;
 439
 440    char gl_extension_bits[__GL_EXT_BYTES];
 441
 442    const struct glx_context_vtable *vtable;
 443 };
 444
 445 extern Bool
 446 glx_context_init(__GLXcontext *gc,
 447                  struct glx_screen *psc, struct glx_config *fbconfig);
 448
 449 #define __glXSetError(gc,code)  \
 450    if (!(gc)->error) {          \
 451       (gc)->error = code;       \
 452    }
 453
 454 extern void __glFreeAttributeState(__GLXcontext *);
 455
 456 /************************************************************************/
 457
 458 /**
 459  * The size of the largest drawing command known to the implementation
 460  * that will use the GLXRender GLX command.  In this case it is
 461  * \c glPolygonStipple.
 462  */
 463 #define __GLX_MAX_SMALL_RENDER_CMD_SIZE 156
 464
 465 /**
 466  * To keep the implementation fast, the code uses a "limit" pointer
 467  * to determine when the drawing command buffer is too full to hold
 468  * another fixed size command.  This constant defines the amount of
 469  * space that must always be available in the drawing command buffer
 470  * at all times for the implementation to work.  It is important that
 471  * the number be just large enough, but not so large as to reduce the
 472  * efficacy of the buffer.  The "+32" is just to keep the code working
 473  * in case somebody counts wrong.
 474  */
 475 #define __GLX_BUFFER_LIMIT_SIZE (__GLX_MAX_SMALL_RENDER_CMD_SIZE + 32)
 476
 477 /**
 478  * This implementation uses a smaller threshold for switching
 479  * to the RenderLarge protocol than the protcol requires so that
 480  * large copies don't occur.
 481  */
 482 #define __GLX_RENDER_CMD_SIZE_LIMIT 4096
 483
 484 /**
 485  * One of these records exists per screen of the display.  It contains
 486  * a pointer to the config data for that screen (if the screen supports GL).
 487  */
 488 struct glx_screen_vtable {
 489    __GLXcontext *(*create_context)(struct glx_screen *psc,
 490                                    struct glx_config *config,
 491                                    GLXContext shareList, int renderType);
 492 };
 493
 494 struct glx_screen
 495 {
 496    const struct glx_screen_vtable *vtable;
 497
 498     /**
 499      * GLX extension string reported by the X-server.
 500      */
 501    const char *serverGLXexts;
 502
 503     /**
 504      * GLX extension string to be reported to applications.  This is the
 505      * set of extensions that the application can actually use.
 506      */
 507    char *effectiveGLXexts;
 508
 509    __GLXdisplayPrivate *display;
 510
 511 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
 512     /**
 513      * Per screen direct rendering interface functions and data.
 514      */
 515    Display *dpy;
 516    int scr;
 517
 518    __GLXDRIscreen *driScreen;
 519 #endif
 520
 521     /**
 522      * Linked list of glx visuals and  fbconfigs for this screen.
 523      */
 524    struct glx_config *visuals, *configs;
 525
 526     /**
 527      * Per-screen dynamic GLX extension tracking.  The \c direct_support
 528      * field only contains enough bits for 64 extensions.  Should libGL
 529      * ever need to track more than 64 GLX extensions, we can safely grow
 530      * this field.  The \c struct glx_screen structure is not used outside
 531      * libGL.
 532      */
 533    /*@{ */
 534    unsigned char direct_support[8];
 535    GLboolean ext_list_first_time;
 536    /*@} */
 537
 538 };
 539
 540 /**
 541  * Per display private data.  One of these records exists for each display
 542  * that is using the OpenGL (GLX) extension.
 543  */
 544 struct __GLXdisplayPrivateRec
 545 {
 546    /* The extension protocol codes */
 547    XExtCodes *codes;
 548    struct __GLXdisplayPrivateRec *next;
 549
 550     /**
 551      * Back pointer to the display
 552      */
 553    Display *dpy;
 554
 555     /**
 556      * The \c majorOpcode is common to all connections to the same server.
 557      * It is also copied into the context structure.
 558      */
 559    int majorOpcode;
 560
 561     /**
 562      * \name Server Version
 563      *
 564      * Major and minor version returned by the server during initialization.
 565      */
 566    /*@{ */
 567    int majorVersion, minorVersion;
 568    /*@} */
 569
 570     /**
 571      * \name Storage for the servers GLX vendor and versions strings.
 572      *
 573      * These are the same for all screens on this display. These fields will
 574      * be filled in on demand.
 575      */
 576    /*@{ */
 577    const char *serverGLXvendor;
 578    const char *serverGLXversion;
 579    /*@} */
 580
 581     /**
 582      * Configurations of visuals for all screens on this display.
 583      * Also, per screen data which now includes the server \c GLX_EXTENSION
 584      * string.
 585      */
 586    struct glx_screen **screens;
 587
 588 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
 589    __glxHashTable *drawHash;
 590
 591     /**
 592      * Per display direct rendering interface functions and data.
 593      */
 594    __GLXDRIdisplay *driswDisplay;
 595    __GLXDRIdisplay *driDisplay;
 596    __GLXDRIdisplay *dri2Display;
 597 #endif
 598 };
 599
 600 extern int
 601 glx_screen_init(struct glx_screen *psc,
 602                 int screen, __GLXdisplayPrivate * priv);
 603
 604 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
 605 extern __GLXDRIdrawable *
 606 dri2GetGlxDrawableFromXDrawableId(Display *dpy, XID id);
 607 #endif
 608
 609 extern GLubyte *__glXFlushRenderBuffer(__GLXcontext *, GLubyte *);
 610
 611 extern void __glXSendLargeChunk(__GLXcontext * gc, GLint requestNumber,
 612                                 GLint totalRequests,
 613                                 const GLvoid * data, GLint dataLen);
 614
 615 extern void __glXSendLargeCommand(__GLXcontext *, const GLvoid *, GLint,
 616                                   const GLvoid *, GLint);
 617
 618 /* Initialize the GLX extension for dpy */
 619 extern __GLXdisplayPrivate *__glXInitialize(Display *);
 620
 621 extern void __glXPreferEGL(int state);
 622
 623 /************************************************************************/
 624
 625 extern int __glXDebug;
 626
 627 /* This is per-thread storage in an MT environment */
 628 #if defined( PTHREADS )
 629
 630 extern void __glXSetCurrentContext(__GLXcontext * c);
 631
 632 # if defined( GLX_USE_TLS )
 633
 634 extern __thread void *__glX_tls_Context
 635    __attribute__ ((tls_model("initial-exec")));
 636
 637 #  define __glXGetCurrentContext() __glX_tls_Context
 638
 639 # else
 640
 641 extern __GLXcontext *__glXGetCurrentContext(void);
 642
 643 # endif /* defined( GLX_USE_TLS ) */
 644
 645 #else
 646
 647 extern __GLXcontext *__glXcurrentContext;
 648 #define __glXGetCurrentContext() __glXcurrentContext
 649 #define __glXSetCurrentContext(gc) __glXcurrentContext = gc
 650
 651 #endif /* defined( PTHREADS ) */
 652
 653 extern void __glXSetCurrentContextNull(void);
 654
 655
 656 /*
 657 ** Global lock for all threads in this address space using the GLX
 658 ** extension
 659 */
 660 #if defined( PTHREADS )
 661 extern pthread_mutex_t __glXmutex;
 662 #define __glXLock()    pthread_mutex_lock(&__glXmutex)
 663 #define __glXUnlock()  pthread_mutex_unlock(&__glXmutex)
 664 #else
 665 #define __glXLock()
 666 #define __glXUnlock()
 667 #endif
 668
 669 /*
 670 ** Setup for a command.  Initialize the extension for dpy if necessary.
 671 */
 672 extern CARD8 __glXSetupForCommand(Display * dpy);
 673
 674 /************************************************************************/
 675
 676 /*
 677 ** Data conversion and packing support.
 678 */
 679
 680 extern const GLuint __glXDefaultPixelStore[9];
 681
 682 /* Send an image to the server using RenderLarge. */
 683 extern void __glXSendLargeImage(__GLXcontext * gc, GLint compsize, GLint dim,
 684                                 GLint width, GLint height, GLint depth,
 685                                 GLenum format, GLenum type,
 686                                 const GLvoid * src, GLubyte * pc,
 687                                 GLubyte * modes);
 688
 689 /* Return the size, in bytes, of some pixel data */
 690 extern GLint __glImageSize(GLint, GLint, GLint, GLenum, GLenum, GLenum);
 691
 692 /* Return the number of elements per group of a specified format*/
 693 extern GLint __glElementsPerGroup(GLenum format, GLenum type);
 694
 695 /* Return the number of bytes per element, based on the element type (other
 696 ** than GL_BITMAP).
 697 */
 698 extern GLint __glBytesPerElement(GLenum type);
 699
 700 /*
 701 ** Fill the transport buffer with the data from the users buffer,
 702 ** applying some of the pixel store modes (unpack modes) to the data
 703 ** first.  As a side effect of this call, the "modes" field is
 704 ** updated to contain the modes needed by the server to decode the
 705 ** sent data.
 706 */
 707 extern void __glFillImage(__GLXcontext *, GLint, GLint, GLint, GLint, GLenum,
 708                           GLenum, const GLvoid *, GLubyte *, GLubyte *);
 709
 710 /* Copy map data with a stride into a packed buffer */
 711 extern void __glFillMap1f(GLint, GLint, GLint, const GLfloat *, GLubyte *);
 712 extern void __glFillMap1d(GLint, GLint, GLint, const GLdouble *, GLubyte *);
 713 extern void __glFillMap2f(GLint, GLint, GLint, GLint, GLint,
 714                           const GLfloat *, GLfloat *);
 715 extern void __glFillMap2d(GLint, GLint, GLint, GLint, GLint,
 716                           const GLdouble *, GLdouble *);
 717
 718 /*
 719 ** Empty an image out of the reply buffer into the clients memory applying
 720 ** the pack modes to pack back into the clients requested format.
 721 */
 722 extern void __glEmptyImage(__GLXcontext *, GLint, GLint, GLint, GLint, GLenum,
 723                            GLenum, const GLubyte *, GLvoid *);
 724
 725
 726 /*
 727 ** Allocate and Initialize Vertex Array client state, and free.
 728 */
 729 extern void __glXInitVertexArrayState(__GLXcontext *);
 730 extern void __glXFreeVertexArrayState(__GLXcontext *);
 731
 732 /*
 733 ** Inform the Server of the major and minor numbers and of the client
 734 ** libraries extension string.
 735 */
 736 extern void __glXClientInfo(Display * dpy, int opcode);
 737
 738 /************************************************************************/
 739
 740 /*
 741 ** Declarations that should be in Xlib
 742 */
 743 #ifdef __GL_USE_OUR_PROTOTYPES
 744 extern void _XFlush(Display *);
 745 extern Status _XReply(Display *, xReply *, int, Bool);
 746 extern void _XRead(Display *, void *, long);
 747 extern void _XSend(Display *, const void *, long);
 748 #endif
 749
 750
 751 extern void __glXInitializeVisualConfigFromTags(struct glx_config * config,
 752                                                 int count, const INT32 * bp,
 753                                                 Bool tagged_only,
 754                                                 Bool fbconfig_style_tags);
 755
 756 extern char *__glXQueryServerString(Display * dpy, int opcode,
 757                                     CARD32 screen, CARD32 name);
 758 extern char *__glXGetString(Display * dpy, int opcode,
 759                             CARD32 screen, CARD32 name);
 760
 761 extern char *__glXstrdup(const char *str);
 762
 763
 764 extern const char __glXGLClientVersion[];
 765 extern const char __glXGLClientExtensions[];
 766
 767 /* Get the unadjusted system time */
 768 extern int __glXGetUST(int64_t * ust);
 769
 770 extern GLboolean __glXGetMscRateOML(Display * dpy, GLXDrawable drawable,
 771                                     int32_t * numerator,
 772                                     int32_t * denominator);
 773
 774 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
 775 extern GLboolean
 776 __glxGetMscRate(__GLXDRIdrawable *glxDraw,
 777                 int32_t * numerator, int32_t * denominator);
 778
 779 /* So that dri2.c:DRI2WireToEvent() can access
 780  * glx_info->codes->first_event */
 781 XExtDisplayInfo *__glXFindDisplay (Display *dpy);
 782
 783 extern void
 784 GarbageCollectDRIDrawables(struct glx_screen *psc);
 785
 786 extern __GLXDRIdrawable *
 787 GetGLXDRIDrawable(Display *dpy, GLXDrawable drawable);
 788
 789 #endif
 790
 791 extern struct glx_screen *
 792 indirect_create_screen(int screen, __GLXdisplayPrivate * priv);
 793
 794 #endif /* !__GLX_client_h__ */