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 struct glx_display;
  71 struct glx_context;
  72
  73 /************************************************************************/
  74
  75 #ifdef GLX_DIRECT_RENDERING
  76
  77 extern void DRI_glXUseXFont(struct glx_context *ctx,
  78                             Font font, int first, int count, int listbase);
  79
  80 #endif
  81
  82 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
  83
  84 /**
  85  * Display dependent methods.  This structure is initialized during the
  86  * \c driCreateDisplay call.
  87  */
  88 typedef struct __GLXDRIdisplayRec __GLXDRIdisplay;
  89 typedef struct __GLXDRIscreenRec __GLXDRIscreen;
  90 typedef struct __GLXDRIdrawableRec __GLXDRIdrawable;
  91
  92 struct __GLXDRIdisplayRec
  93 {
  94     /**
  95      * Method to destroy the private DRI display data.
  96      */
  97    void (*destroyDisplay) (__GLXDRIdisplay * display);
  98
  99    struct glx_screen *(*createScreen)(int screen, struct glx_display * priv);
 100 };
 101
 102 struct __GLXDRIscreenRec {
 103
 104    void (*destroyScreen)(struct glx_screen *psc);
 105
 106    struct glx_context *(*createContext)(struct glx_screen *psc,
 107                                         struct glx_config *config,
 108                                         struct glx_context *shareList,
 109                                         int renderType);
 110
 111    __GLXDRIdrawable *(*createDrawable)(struct glx_screen *psc,
 112                                        XID drawable,
 113                                        GLXDrawable glxDrawable,
 114                                        struct glx_config *config);
 115
 116    int64_t (*swapBuffers)(__GLXDRIdrawable *pdraw, int64_t target_msc,
 117                           int64_t divisor, int64_t remainder);
 118    void (*copySubBuffer)(__GLXDRIdrawable *pdraw,
 119                          int x, int y, int width, int height);
 120    int (*getDrawableMSC)(struct glx_screen *psc, __GLXDRIdrawable *pdraw,
 121                          int64_t *ust, int64_t *msc, int64_t *sbc);
 122    int (*waitForMSC)(__GLXDRIdrawable *pdraw, int64_t target_msc,
 123                      int64_t divisor, int64_t remainder, int64_t *ust,
 124                      int64_t *msc, int64_t *sbc);
 125    int (*waitForSBC)(__GLXDRIdrawable *pdraw, int64_t target_sbc, int64_t *ust,
 126                      int64_t *msc, int64_t *sbc);
 127    int (*setSwapInterval)(__GLXDRIdrawable *pdraw, int interval);
 128    int (*getSwapInterval)(__GLXDRIdrawable *pdraw);
 129 };
 130
 131 struct __GLXDRIdrawableRec
 132 {
 133    void (*destroyDrawable) (__GLXDRIdrawable * drawable);
 134
 135    XID xDrawable;
 136    XID drawable;
 137    struct glx_screen *psc;
 138    GLenum textureTarget;
 139    GLenum textureFormat;        /* EXT_texture_from_pixmap support */
 140    unsigned long eventMask;
 141    int refcount;
 142 };
 143
 144 /*
 145 ** Function to create and DRI display data and initialize the display
 146 ** dependent methods.
 147 */
 148 extern __GLXDRIdisplay *driswCreateDisplay(Display * dpy);
 149 extern __GLXDRIdisplay *driCreateDisplay(Display * dpy);
 150 extern __GLXDRIdisplay *dri2CreateDisplay(Display * dpy);
 151 extern void dri2InvalidateBuffers(Display *dpy, XID drawable);
 152 extern unsigned dri2GetSwapEventType(Display *dpy, XID drawable);
 153
 154
 155 /*
 156 ** Functions to obtain driver configuration information from a direct
 157 ** rendering client application
 158 */
 159 extern const char *glXGetScreenDriver(Display * dpy, int scrNum);
 160
 161 extern const char *glXGetDriverConfig(const char *driverName);
 162
 163 #endif
 164
 165 /************************************************************************/
 166
 167 #define __GL_CLIENT_ATTRIB_STACK_DEPTH 16
 168
 169 typedef struct __GLXpixelStoreModeRec
 170 {
 171    GLboolean swapEndian;
 172    GLboolean lsbFirst;
 173    GLuint rowLength;
 174    GLuint imageHeight;
 175    GLuint imageDepth;
 176    GLuint skipRows;
 177    GLuint skipPixels;
 178    GLuint skipImages;
 179    GLuint alignment;
 180 } __GLXpixelStoreMode;
 181
 182
 183 typedef struct __GLXattributeRec
 184 {
 185    GLuint mask;
 186
 187     /**
 188      * Pixel storage state.  Most of the pixel store mode state is kept
 189      * here and used by the client code to manage the packing and
 190      * unpacking of data sent to/received from the server.
 191      */
 192    __GLXpixelStoreMode storePack, storeUnpack;
 193
 194     /**
 195      * Is EXT_vertex_array / GL 1.1 DrawArrays protocol specifically
 196      * disabled?
 197      */
 198    GLboolean NoDrawArraysProtocol;
 199
 200     /**
 201      * Vertex Array storage state.  The vertex array component
 202      * state is stored here and is used to manage the packing of
 203      * DrawArrays data sent to the server.
 204      */
 205    struct array_state_vector *array_state;
 206 } __GLXattribute;
 207
 208 typedef struct __GLXattributeMachineRec
 209 {
 210    __GLXattribute *stack[__GL_CLIENT_ATTRIB_STACK_DEPTH];
 211    __GLXattribute **stackPointer;
 212 } __GLXattributeMachine;
 213
 214 struct glx_context_vtable {
 215    void (*destroy)(struct glx_context *ctx);
 216    int (*bind)(struct glx_context *context, struct glx_context *old,
 217                GLXDrawable draw, GLXDrawable read);
 218    void (*unbind)(struct glx_context *context, struct glx_context *new);
 219    void (*wait_gl)(struct glx_context *ctx);
 220    void (*wait_x)(struct glx_context *ctx);
 221    void (*use_x_font)(struct glx_context *ctx,
 222                       Font font, int first, int count, int listBase);
 223    void (*bind_tex_image)(Display * dpy,
 224                           GLXDrawable drawable,
 225                           int buffer, const int *attrib_list);
 226    void (*release_tex_image)(Display * dpy, GLXDrawable drawable, int buffer);
 227    void * (*get_proc_address)(const char *symbol);
 228 };
 229
 230 extern void
 231 glx_send_destroy_context(Display *dpy, XID xid);
 232
 233 /**
 234  * GLX state that needs to be kept on the client.  One of these records
 235  * exist for each context that has been made current by this client.
 236  */
 237 struct glx_context
 238 {
 239     /**
 240      * \name Drawing command buffer.
 241      *
 242      * Drawing commands are packed into this buffer before being sent as a
 243      * single GLX protocol request.  The buffer is sent when it overflows or
 244      * is flushed by \c __glXFlushRenderBuffer.  \c pc is the next location
 245      * in the buffer to be filled.  \c limit is described above in the buffer
 246      * slop discussion.
 247      *
 248      * Commands that require large amounts of data to be transfered will
 249      * also use this buffer to hold a header that describes the large
 250      * command.
 251      *
 252      * These must be the first 6 fields since they are static initialized
 253      * in the dummy context in glxext.c
 254      */
 255    /*@{ */
 256    GLubyte *buf;
 257    GLubyte *pc;
 258    GLubyte *limit;
 259    GLubyte *bufEnd;
 260    GLint bufSize;
 261    /*@} */
 262
 263    const struct glx_context_vtable *vtable;
 264
 265     /**
 266      * The XID of this rendering context.  When the context is created a
 267      * new XID is allocated.  This is set to None when the context is
 268      * destroyed but is still current to some thread. In this case the
 269      * context will be freed on next MakeCurrent.
 270      */
 271    XID xid;
 272
 273     /**
 274      * The XID of the \c shareList context.
 275      */
 276    XID share_xid;
 277
 278     /**
 279      * Screen number.
 280      */
 281    GLint screen;
 282    struct glx_screen *psc;
 283
 284     /**
 285      * \c GL_TRUE if the context was created with ImportContext, which
 286      * means the server-side context was created by another X client.
 287      */
 288    GLboolean imported;
 289
 290     /**
 291      * The context tag returned by MakeCurrent when this context is made
 292      * current. This tag is used to identify the context that a thread has
 293      * current so that proper server context management can be done.  It is
 294      * used for all context specific commands (i.e., \c Render, \c RenderLarge,
 295      * \c WaitX, \c WaitGL, \c UseXFont, and \c MakeCurrent (for the old
 296      * context)).
 297      */
 298    GLXContextTag currentContextTag;
 299
 300     /**
 301      * \name Rendering mode
 302      *
 303      * The rendering mode is kept on the client as well as the server.
 304      * When \c glRenderMode is called, the buffer associated with the
 305      * previous rendering mode (feedback or select) is filled.
 306      */
 307    /*@{ */
 308    GLenum renderMode;
 309    GLfloat *feedbackBuf;
 310    GLuint *selectBuf;
 311    /*@} */
 312
 313     /**
 314      * Fill newImage with the unpacked form of \c oldImage getting it
 315      * ready for transport to the server.
 316      */
 317    void (*fillImage) (struct glx_context *, GLint, GLint, GLint, GLint, GLenum,
 318                       GLenum, const GLvoid *, GLubyte *, GLubyte *);
 319
 320     /**
 321      * Client side attribs.
 322      */
 323    __GLXattributeMachine attributes;
 324
 325     /**
 326      * Client side error code.  This is set when client side gl API
 327      * routines need to set an error because of a bad enumerant or
 328      * running out of memory, etc.
 329      */
 330    GLenum error;
 331
 332     /**
 333      * Whether this context does direct rendering.
 334      */
 335    Bool isDirect;
 336
 337 #if defined(GLX_DIRECT_RENDERING) && defined(GLX_USE_APPLEGL)
 338    void *driContext;
 339 #endif
 340
 341     /**
 342      * \c dpy of current display for this context.  Will be \c NULL if not
 343      * current to any display, or if this is the "dummy context".
 344      */
 345    Display *currentDpy;
 346
 347     /**
 348      * The current drawable for this context.  Will be None if this
 349      * context is not current to any drawable.  currentReadable is below.
 350      */
 351    GLXDrawable currentDrawable;
 352
 353     /**
 354      * \name GL Constant Strings
 355      *
 356      * Constant strings that describe the server implementation
 357      * These pertain to GL attributes, not to be confused with
 358      * GLX versioning attributes.
 359      */
 360    /*@{ */
 361    GLubyte *vendor;
 362    GLubyte *renderer;
 363    GLubyte *version;
 364    GLubyte *extensions;
 365    /*@} */
 366
 367     /**
 368      * Maximum small render command size.  This is the smaller of 64k and
 369      * the size of the above buffer.
 370      */
 371    GLint maxSmallRenderCommandSize;
 372
 373     /**
 374      * Major opcode for the extension.  Copied here so a lookup isn't
 375      * needed.
 376      */
 377    GLint majorOpcode;
 378
 379     /**
 380      * Pointer to the config used to create this context.
 381      */
 382    struct glx_config *config;
 383
 384     /**
 385      * The current read-drawable for this context.  Will be None if this
 386      * context is not current to any drawable.
 387      *
 388      * \since Internal API version 20030606.
 389      */
 390    GLXDrawable currentReadable;
 391
 392    /**
 393     * Pointer to client-state data that is private to libGL.  This is only
 394     * used for indirect rendering contexts.
 395     *
 396     * No internal API version change was made for this change.  Client-side
 397     * drivers should NEVER use this data or even care that it exists.
 398     */
 399    void *client_state_private;
 400
 401    /**
 402     * Stored value for \c glXQueryContext attribute \c GLX_RENDER_TYPE.
 403     */
 404    int renderType;
 405
 406    /**
 407     * \name Raw server GL version
 408     *
 409     * True core GL version supported by the server.  This is the raw value
 410     * returned by the server, and it may not reflect what is actually
 411     * supported (or reported) by the client-side library.
 412     */
 413    /*@{ */
 414    int server_major;        /**< Major version number. */
 415    int server_minor;        /**< Minor version number. */
 416    /*@} */
 417
 418    /**
 419     * Number of threads we're currently current in.
 420     */
 421    unsigned long thread_refcount;
 422
 423    char gl_extension_bits[__GL_EXT_BYTES];
 424 };
 425
 426 extern Bool
 427 glx_context_init(struct glx_context *gc,
 428                  struct glx_screen *psc, struct glx_config *fbconfig);
 429
 430 #define __glXSetError(gc,code)  \
 431    if (!(gc)->error) {          \
 432       (gc)->error = code;       \
 433    }
 434
 435 extern void __glFreeAttributeState(struct glx_context *);
 436
 437 /************************************************************************/
 438
 439 /**
 440  * The size of the largest drawing command known to the implementation
 441  * that will use the GLXRender GLX command.  In this case it is
 442  * \c glPolygonStipple.
 443  */
 444 #define __GLX_MAX_SMALL_RENDER_CMD_SIZE 156
 445
 446 /**
 447  * To keep the implementation fast, the code uses a "limit" pointer
 448  * to determine when the drawing command buffer is too full to hold
 449  * another fixed size command.  This constant defines the amount of
 450  * space that must always be available in the drawing command buffer
 451  * at all times for the implementation to work.  It is important that
 452  * the number be just large enough, but not so large as to reduce the
 453  * efficacy of the buffer.  The "+32" is just to keep the code working
 454  * in case somebody counts wrong.
 455  */
 456 #define __GLX_BUFFER_LIMIT_SIZE (__GLX_MAX_SMALL_RENDER_CMD_SIZE + 32)
 457
 458 /**
 459  * This implementation uses a smaller threshold for switching
 460  * to the RenderLarge protocol than the protcol requires so that
 461  * large copies don't occur.
 462  */
 463 #define __GLX_RENDER_CMD_SIZE_LIMIT 4096
 464
 465 /**
 466  * One of these records exists per screen of the display.  It contains
 467  * a pointer to the config data for that screen (if the screen supports GL).
 468  */
 469 struct glx_screen_vtable {
 470    struct glx_context *(*create_context)(struct glx_screen *psc,
 471                                          struct glx_config *config,
 472                                          struct glx_context *shareList,
 473                                          int renderType);
 474 };
 475
 476 struct glx_screen
 477 {
 478    const struct glx_screen_vtable *vtable;
 479
 480     /**
 481      * GLX extension string reported by the X-server.
 482      */
 483    const char *serverGLXexts;
 484
 485     /**
 486      * GLX extension string to be reported to applications.  This is the
 487      * set of extensions that the application can actually use.
 488      */
 489    char *effectiveGLXexts;
 490
 491    struct glx_display *display;
 492
 493    Display *dpy;
 494    int scr;
 495
 496 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
 497     /**
 498      * Per screen direct rendering interface functions and data.
 499      */
 500    __GLXDRIscreen *driScreen;
 501 #endif
 502
 503     /**
 504      * Linked list of glx visuals and  fbconfigs for this screen.
 505      */
 506    struct glx_config *visuals, *configs;
 507
 508     /**
 509      * Per-screen dynamic GLX extension tracking.  The \c direct_support
 510      * field only contains enough bits for 64 extensions.  Should libGL
 511      * ever need to track more than 64 GLX extensions, we can safely grow
 512      * this field.  The \c struct glx_screen structure is not used outside
 513      * libGL.
 514      */
 515    /*@{ */
 516    unsigned char direct_support[8];
 517    GLboolean ext_list_first_time;
 518    /*@} */
 519
 520 };
 521
 522 /**
 523  * Per display private data.  One of these records exists for each display
 524  * that is using the OpenGL (GLX) extension.
 525  */
 526 struct glx_display
 527 {
 528    /* The extension protocol codes */
 529    XExtCodes *codes;
 530    struct glx_display *next;
 531
 532     /**
 533      * Back pointer to the display
 534      */
 535    Display *dpy;
 536
 537     /**
 538      * The \c majorOpcode is common to all connections to the same server.
 539      * It is also copied into the context structure.
 540      */
 541    int majorOpcode;
 542
 543     /**
 544      * \name Server Version
 545      *
 546      * Major and minor version returned by the server during initialization.
 547      */
 548    /*@{ */
 549    int majorVersion, minorVersion;
 550    /*@} */
 551
 552     /**
 553      * \name Storage for the servers GLX vendor and versions strings.
 554      *
 555      * These are the same for all screens on this display. These fields will
 556      * be filled in on demand.
 557      */
 558    /*@{ */
 559    const char *serverGLXvendor;
 560    const char *serverGLXversion;
 561    /*@} */
 562
 563     /**
 564      * Configurations of visuals for all screens on this display.
 565      * Also, per screen data which now includes the server \c GLX_EXTENSION
 566      * string.
 567      */
 568    struct glx_screen **screens;
 569
 570    __glxHashTable *glXDrawHash;
 571
 572 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
 573    __glxHashTable *drawHash;
 574
 575     /**
 576      * Per display direct rendering interface functions and data.
 577      */
 578    __GLXDRIdisplay *driswDisplay;
 579    __GLXDRIdisplay *driDisplay;
 580    __GLXDRIdisplay *dri2Display;
 581 #endif
 582 };
 583
 584 struct glx_drawable {
 585    XID xDrawable;
 586    XID drawable;
 587
 588    uint32_t lastEventSbc;
 589    int64_t eventSbcWrap;
 590 };
 591
 592 extern int
 593 glx_screen_init(struct glx_screen *psc,
 594                 int screen, struct glx_display * priv);
 595 extern void
 596 glx_screen_cleanup(struct glx_screen *psc);
 597
 598 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
 599 extern __GLXDRIdrawable *
 600 dri2GetGlxDrawableFromXDrawableId(Display *dpy, XID id);
 601 #endif
 602
 603 extern GLubyte *__glXFlushRenderBuffer(struct glx_context *, GLubyte *);
 604
 605 extern void __glXSendLargeChunk(struct glx_context * gc, GLint requestNumber,
 606                                 GLint totalRequests,
 607                                 const GLvoid * data, GLint dataLen);
 608
 609 extern void __glXSendLargeCommand(struct glx_context *, const GLvoid *, GLint,
 610                                   const GLvoid *, GLint);
 611
 612 /* Initialize the GLX extension for dpy */
 613 extern struct glx_display *__glXInitialize(Display *);
 614
 615 extern void __glXPreferEGL(int state);
 616
 617 /************************************************************************/
 618
 619 extern int __glXDebug;
 620
 621 /* This is per-thread storage in an MT environment */
 622 #if defined( PTHREADS )
 623
 624 extern void __glXSetCurrentContext(struct glx_context * c);
 625
 626 # if defined( GLX_USE_TLS )
 627
 628 extern __thread void *__glX_tls_Context
 629    __attribute__ ((tls_model("initial-exec")));
 630
 631 #  define __glXGetCurrentContext() __glX_tls_Context
 632
 633 # else
 634
 635 extern struct glx_context *__glXGetCurrentContext(void);
 636
 637 # endif /* defined( GLX_USE_TLS ) */
 638
 639 #else
 640
 641 extern struct glx_context *__glXcurrentContext;
 642 #define __glXGetCurrentContext() __glXcurrentContext
 643 #define __glXSetCurrentContext(gc) __glXcurrentContext = gc
 644
 645 #endif /* defined( PTHREADS ) */
 646
 647 extern void __glXSetCurrentContextNull(void);
 648
 649
 650 /*
 651 ** Global lock for all threads in this address space using the GLX
 652 ** extension
 653 */
 654 #if defined( PTHREADS )
 655 extern pthread_mutex_t __glXmutex;
 656 #define __glXLock()    pthread_mutex_lock(&__glXmutex)
 657 #define __glXUnlock()  pthread_mutex_unlock(&__glXmutex)
 658 #else
 659 #define __glXLock()
 660 #define __glXUnlock()
 661 #endif
 662
 663 /*
 664 ** Setup for a command.  Initialize the extension for dpy if necessary.
 665 */
 666 extern CARD8 __glXSetupForCommand(Display * dpy);
 667
 668 /************************************************************************/
 669
 670 /*
 671 ** Data conversion and packing support.
 672 */
 673
 674 extern const GLuint __glXDefaultPixelStore[9];
 675
 676 /* Send an image to the server using RenderLarge. */
 677 extern void __glXSendLargeImage(struct glx_context * gc, GLint compsize, GLint dim,
 678                                 GLint width, GLint height, GLint depth,
 679                                 GLenum format, GLenum type,
 680                                 const GLvoid * src, GLubyte * pc,
 681                                 GLubyte * modes);
 682
 683 /* Return the size, in bytes, of some pixel data */
 684 extern GLint __glImageSize(GLint, GLint, GLint, GLenum, GLenum, GLenum);
 685
 686 /* Return the number of elements per group of a specified format*/
 687 extern GLint __glElementsPerGroup(GLenum format, GLenum type);
 688
 689 /* Return the number of bytes per element, based on the element type (other
 690 ** than GL_BITMAP).
 691 */
 692 extern GLint __glBytesPerElement(GLenum type);
 693
 694 /*
 695 ** Fill the transport buffer with the data from the users buffer,
 696 ** applying some of the pixel store modes (unpack modes) to the data
 697 ** first.  As a side effect of this call, the "modes" field is
 698 ** updated to contain the modes needed by the server to decode the
 699 ** sent data.
 700 */
 701 extern void __glFillImage(struct glx_context *, GLint, GLint, GLint, GLint, GLenum,
 702                           GLenum, const GLvoid *, GLubyte *, GLubyte *);
 703
 704 /* Copy map data with a stride into a packed buffer */
 705 extern void __glFillMap1f(GLint, GLint, GLint, const GLfloat *, GLubyte *);
 706 extern void __glFillMap1d(GLint, GLint, GLint, const GLdouble *, GLubyte *);
 707 extern void __glFillMap2f(GLint, GLint, GLint, GLint, GLint,
 708                           const GLfloat *, GLfloat *);
 709 extern void __glFillMap2d(GLint, GLint, GLint, GLint, GLint,
 710                           const GLdouble *, GLdouble *);
 711
 712 /*
 713 ** Empty an image out of the reply buffer into the clients memory applying
 714 ** the pack modes to pack back into the clients requested format.
 715 */
 716 extern void __glEmptyImage(struct glx_context *, GLint, GLint, GLint, GLint, GLenum,
 717                            GLenum, const GLubyte *, GLvoid *);
 718
 719
 720 /*
 721 ** Allocate and Initialize Vertex Array client state, and free.
 722 */
 723 extern void __glXInitVertexArrayState(struct glx_context *);
 724 extern void __glXFreeVertexArrayState(struct glx_context *);
 725
 726 /*
 727 ** Inform the Server of the major and minor numbers and of the client
 728 ** libraries extension string.
 729 */
 730 extern void __glXClientInfo(Display * dpy, int opcode);
 731
 732 /************************************************************************/
 733
 734 /*
 735 ** Declarations that should be in Xlib
 736 */
 737 #ifdef __GL_USE_OUR_PROTOTYPES
 738 extern void _XFlush(Display *);
 739 extern Status _XReply(Display *, xReply *, int, Bool);
 740 extern void _XRead(Display *, void *, long);
 741 extern void _XSend(Display *, const void *, long);
 742 #endif
 743
 744
 745 extern void __glXInitializeVisualConfigFromTags(struct glx_config * config,
 746                                                 int count, const INT32 * bp,
 747                                                 Bool tagged_only,
 748                                                 Bool fbconfig_style_tags);
 749
 750 extern char *__glXQueryServerString(Display * dpy, int opcode,
 751                                     CARD32 screen, CARD32 name);
 752 extern char *__glXGetString(Display * dpy, int opcode,
 753                             CARD32 screen, CARD32 name);
 754
 755 extern char *__glXstrdup(const char *str);
 756
 757
 758 extern const char __glXGLClientVersion[];
 759 extern const char __glXGLClientExtensions[];
 760
 761 /* Get the unadjusted system time */
 762 extern int __glXGetUST(int64_t * ust);
 763
 764 extern GLboolean __glXGetMscRateOML(Display * dpy, GLXDrawable drawable,
 765                                     int32_t * numerator,
 766                                     int32_t * denominator);
 767
 768 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
 769 extern GLboolean
 770 __glxGetMscRate(__GLXDRIdrawable *glxDraw,
 771                 int32_t * numerator, int32_t * denominator);
 772
 773 /* So that dri2.c:DRI2WireToEvent() can access
 774  * glx_info->codes->first_event */
 775 XExtDisplayInfo *__glXFindDisplay (Display *dpy);
 776
 777 extern void
 778 GarbageCollectDRIDrawables(struct glx_screen *psc);
 779
 780 extern __GLXDRIdrawable *
 781 GetGLXDRIDrawable(Display *dpy, GLXDrawable drawable);
 782 #endif
 783
 784 #ifdef GLX_USE_APPLEGL
 785 extern struct glx_screen *
 786 applegl_create_screen(int screen, struct glx_display * priv);
 787
 788 extern struct glx_context *
 789 applegl_create_context(struct glx_screen *psc,
 790                         struct glx_config *mode,
 791                         struct glx_context *shareList, int renderType);
 792
 793 extern int
 794 applegl_create_display(struct glx_display *display);
 795 #endif
 796
 797
 798 extern struct glx_drawable *GetGLXDrawable(Display *dpy, GLXDrawable drawable);
 799 extern int InitGLXDrawable(Display *dpy, struct glx_drawable *glxDraw,
 800                            XID xDrawable, GLXDrawable drawable);
 801 extern void DestroyGLXDrawable(Display *dpy, GLXDrawable drawable);
 802
 803 extern struct glx_context dummyContext;
 804
 805 extern struct glx_screen *
 806 indirect_create_screen(int screen, struct glx_display * priv);
 807 extern struct glx_context *
 808 indirect_create_context(struct glx_screen *psc,
 809                         struct glx_config *mode,
 810                         struct glx_context *shareList, int renderType);
 811
 812 #endif /* !__GLX_client_h__ */