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(Font font, int first, int count, int listbase);
  99
 100 #endif
 101
 102 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
 103
 104 /**
 105  * Display dependent methods.  This structure is initialized during the
 106  * \c driCreateDisplay call.
 107  */
 108 typedef struct __GLXDRIdisplayRec __GLXDRIdisplay;
 109 typedef struct __GLXDRIscreenRec __GLXDRIscreen;
 110 typedef struct __GLXDRIdrawableRec __GLXDRIdrawable;
 111 typedef struct __GLXDRIcontextRec __GLXDRIcontext;
 112
 113 #include "glxextensions.h"
 114
 115 struct __GLXDRIdisplayRec
 116 {
 117     /**
 118      * Method to destroy the private DRI display data.
 119      */
 120    void (*destroyDisplay) (__GLXDRIdisplay * display);
 121
 122    __GLXscreenConfigs *(*createScreen)(int screen, __GLXdisplayPrivate * priv);
 123 };
 124
 125 struct __GLXDRIscreenRec {
 126
 127    void (*destroyScreen)(__GLXscreenConfigs *psc);
 128
 129    __GLXDRIcontext *(*createContext)(__GLXscreenConfigs *psc,
 130                                      const __GLcontextModes *mode,
 131                                      GLXContext gc,
 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    void (*waitX)(__GLXDRIdrawable *pdraw);
 144    void (*waitGL)(__GLXDRIdrawable *pdraw);
 145    int (*getDrawableMSC)(__GLXscreenConfigs *psc, __GLXDRIdrawable *pdraw,
 146                          int64_t *ust, int64_t *msc, int64_t *sbc);
 147    int (*waitForMSC)(__GLXDRIdrawable *pdraw, int64_t target_msc,
 148                      int64_t divisor, int64_t remainder, int64_t *ust,
 149                      int64_t *msc, int64_t *sbc);
 150    int (*waitForSBC)(__GLXDRIdrawable *pdraw, int64_t target_sbc, int64_t *ust,
 151                      int64_t *msc, int64_t *sbc);
 152    int (*setSwapInterval)(__GLXDRIdrawable *pdraw, int interval);
 153    int (*getSwapInterval)(__GLXDRIdrawable *pdraw);
 154 };
 155
 156 struct __GLXDRIcontextRec
 157 {
 158    void (*destroyContext) (__GLXDRIcontext * context,
 159                            __GLXscreenConfigs * psc, Display * dpy);
 160      Bool(*bindContext) (__GLXDRIcontext * context, __GLXDRIdrawable * pdraw,
 161                          __GLXDRIdrawable * pread);
 162
 163    void (*unbindContext) (__GLXDRIcontext * context);
 164 };
 165
 166 struct __GLXDRIdrawableRec
 167 {
 168    void (*destroyDrawable) (__GLXDRIdrawable * drawable);
 169
 170    XID xDrawable;
 171    XID drawable;
 172    __GLXscreenConfigs *psc;
 173    GLenum textureTarget;
 174    GLenum textureFormat;        /* EXT_texture_from_pixmap support */
 175    unsigned long eventMask;
 176 };
 177
 178 /*
 179 ** Function to create and DRI display data and initialize the display
 180 ** dependent methods.
 181 */
 182 extern __GLXDRIdisplay *driswCreateDisplay(Display * dpy);
 183 extern __GLXDRIdisplay *driCreateDisplay(Display * dpy);
 184 extern __GLXDRIdisplay *dri2CreateDisplay(Display * dpy);
 185 extern void dri2InvalidateBuffers(Display *dpy, XID drawable);
 186
 187
 188 /*
 189 ** Functions to obtain driver configuration information from a direct
 190 ** rendering client application
 191 */
 192 extern const char *glXGetScreenDriver(Display * dpy, int scrNum);
 193
 194 extern const char *glXGetDriverConfig(const char *driverName);
 195
 196 #endif
 197
 198 /************************************************************************/
 199
 200 #define __GL_CLIENT_ATTRIB_STACK_DEPTH 16
 201
 202 typedef struct __GLXpixelStoreModeRec
 203 {
 204    GLboolean swapEndian;
 205    GLboolean lsbFirst;
 206    GLuint rowLength;
 207    GLuint imageHeight;
 208    GLuint imageDepth;
 209    GLuint skipRows;
 210    GLuint skipPixels;
 211    GLuint skipImages;
 212    GLuint alignment;
 213 } __GLXpixelStoreMode;
 214
 215
 216 typedef struct __GLXattributeRec
 217 {
 218    GLuint mask;
 219
 220     /**
 221      * Pixel storage state.  Most of the pixel store mode state is kept
 222      * here and used by the client code to manage the packing and
 223      * unpacking of data sent to/received from the server.
 224      */
 225    __GLXpixelStoreMode storePack, storeUnpack;
 226
 227     /**
 228      * Is EXT_vertex_array / GL 1.1 DrawArrays protocol specifically
 229      * disabled?
 230      */
 231    GLboolean NoDrawArraysProtocol;
 232
 233     /**
 234      * Vertex Array storage state.  The vertex array component
 235      * state is stored here and is used to manage the packing of
 236      * DrawArrays data sent to the server.
 237      */
 238    struct array_state_vector *array_state;
 239 } __GLXattribute;
 240
 241 typedef struct __GLXattributeMachineRec
 242 {
 243    __GLXattribute *stack[__GL_CLIENT_ATTRIB_STACK_DEPTH];
 244    __GLXattribute **stackPointer;
 245 } __GLXattributeMachine;
 246
 247 struct glx_context_vtable {
 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      * 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 #ifdef GLX_USE_APPLEGL
 415    void *driContext;
 416    Bool do_destroy;
 417 #else
 418    __GLXDRIcontext *driContext;
 419 #endif
 420 #endif
 421
 422     /**
 423      * The current read-drawable for this context.  Will be None if this
 424      * context is not current to any drawable.
 425      *
 426      * \since Internal API version 20030606.
 427      */
 428    GLXDrawable currentReadable;
 429
 430    /**
 431     * Pointer to client-state data that is private to libGL.  This is only
 432     * used for indirect rendering contexts.
 433     *
 434     * No internal API version change was made for this change.  Client-side
 435     * drivers should NEVER use this data or even care that it exists.
 436     */
 437    void *client_state_private;
 438
 439    /**
 440     * Stored value for \c glXQueryContext attribute \c GLX_RENDER_TYPE.
 441     */
 442    int renderType;
 443
 444    /**
 445     * \name Raw server GL version
 446     *
 447     * True core GL version supported by the server.  This is the raw value
 448     * returned by the server, and it may not reflect what is actually
 449     * supported (or reported) by the client-side library.
 450     */
 451    /*@{ */
 452    int server_major;        /**< Major version number. */
 453    int server_minor;        /**< Minor version number. */
 454    /*@} */
 455
 456    /**
 457     * Thread ID we're currently current in. Zero if none.
 458     */
 459    unsigned long thread_id;
 460
 461    char gl_extension_bits[__GL_EXT_BYTES];
 462
 463    const struct glx_context_vtable *vtable;
 464 };
 465
 466 #define __glXSetError(gc,code)  \
 467    if (!(gc)->error) {          \
 468       (gc)->error = code;       \
 469    }
 470
 471 extern void __glFreeAttributeState(__GLXcontext *);
 472
 473 /************************************************************************/
 474
 475 /**
 476  * The size of the largest drawing command known to the implementation
 477  * that will use the GLXRender GLX command.  In this case it is
 478  * \c glPolygonStipple.
 479  */
 480 #define __GLX_MAX_SMALL_RENDER_CMD_SIZE 156
 481
 482 /**
 483  * To keep the implementation fast, the code uses a "limit" pointer
 484  * to determine when the drawing command buffer is too full to hold
 485  * another fixed size command.  This constant defines the amount of
 486  * space that must always be available in the drawing command buffer
 487  * at all times for the implementation to work.  It is important that
 488  * the number be just large enough, but not so large as to reduce the
 489  * efficacy of the buffer.  The "+32" is just to keep the code working
 490  * in case somebody counts wrong.
 491  */
 492 #define __GLX_BUFFER_LIMIT_SIZE (__GLX_MAX_SMALL_RENDER_CMD_SIZE + 32)
 493
 494 /**
 495  * This implementation uses a smaller threshold for switching
 496  * to the RenderLarge protocol than the protcol requires so that
 497  * large copies don't occur.
 498  */
 499 #define __GLX_RENDER_CMD_SIZE_LIMIT 4096
 500
 501 /**
 502  * One of these records exists per screen of the display.  It contains
 503  * a pointer to the config data for that screen (if the screen supports GL).
 504  */
 505 struct __GLXscreenConfigsRec
 506 {
 507     /**
 508      * GLX extension string reported by the X-server.
 509      */
 510    const char *serverGLXexts;
 511
 512     /**
 513      * GLX extension string to be reported to applications.  This is the
 514      * set of extensions that the application can actually use.
 515      */
 516    char *effectiveGLXexts;
 517
 518    /**
 519     * Context vtable to use for direct contexts on this screen
 520     */
 521    const struct glx_context_vtable *direct_context_vtable;
 522
 523    __GLXdisplayPrivate *display;
 524
 525 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
 526     /**
 527      * Per screen direct rendering interface functions and data.
 528      */
 529    Display *dpy;
 530    int scr;
 531
 532    __GLXDRIscreen *driScreen;
 533 #endif
 534
 535     /**
 536      * Linked list of glx visuals and  fbconfigs for this screen.
 537      */
 538    __GLcontextModes *visuals, *configs;
 539
 540     /**
 541      * Per-screen dynamic GLX extension tracking.  The \c direct_support
 542      * field only contains enough bits for 64 extensions.  Should libGL
 543      * ever need to track more than 64 GLX extensions, we can safely grow
 544      * this field.  The \c __GLXscreenConfigs structure is not used outside
 545      * libGL.
 546      */
 547    /*@{ */
 548    unsigned char direct_support[8];
 549    GLboolean ext_list_first_time;
 550    /*@} */
 551
 552 };
 553
 554 /**
 555  * Per display private data.  One of these records exists for each display
 556  * that is using the OpenGL (GLX) extension.
 557  */
 558 struct __GLXdisplayPrivateRec
 559 {
 560    /* The extension protocol codes */
 561    XExtCodes *codes;
 562    struct __GLXdisplayPrivateRec *next;
 563
 564     /**
 565      * Back pointer to the display
 566      */
 567    Display *dpy;
 568
 569     /**
 570      * The \c majorOpcode is common to all connections to the same server.
 571      * It is also copied into the context structure.
 572      */
 573    int majorOpcode;
 574
 575     /**
 576      * \name Server Version
 577      *
 578      * Major and minor version returned by the server during initialization.
 579      */
 580    /*@{ */
 581    int majorVersion, minorVersion;
 582    /*@} */
 583
 584     /**
 585      * \name Storage for the servers GLX vendor and versions strings.
 586      *
 587      * These are the same for all screens on this display. These fields will
 588      * be filled in on demand.
 589      */
 590    /*@{ */
 591    const char *serverGLXvendor;
 592    const char *serverGLXversion;
 593    /*@} */
 594
 595     /**
 596      * Configurations of visuals for all screens on this display.
 597      * Also, per screen data which now includes the server \c GLX_EXTENSION
 598      * string.
 599      */
 600    __GLXscreenConfigs **screenConfigs;
 601
 602 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
 603    __glxHashTable *drawHash;
 604
 605     /**
 606      * Per display direct rendering interface functions and data.
 607      */
 608    __GLXDRIdisplay *driswDisplay;
 609    __GLXDRIdisplay *driDisplay;
 610    __GLXDRIdisplay *dri2Display;
 611 #endif
 612 };
 613
 614 extern int
 615 glx_screen_init(__GLXscreenConfigs *psc,
 616                 int screen, __GLXdisplayPrivate * priv);
 617
 618 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
 619 extern __GLXDRIdrawable *
 620 dri2GetGlxDrawableFromXDrawableId(Display *dpy, XID id);
 621 #endif
 622
 623 extern GLubyte *__glXFlushRenderBuffer(__GLXcontext *, GLubyte *);
 624
 625 extern void __glXSendLargeChunk(__GLXcontext * gc, GLint requestNumber,
 626                                 GLint totalRequests,
 627                                 const GLvoid * data, GLint dataLen);
 628
 629 extern void __glXSendLargeCommand(__GLXcontext *, const GLvoid *, GLint,
 630                                   const GLvoid *, GLint);
 631
 632 /* Initialize the GLX extension for dpy */
 633 extern __GLXdisplayPrivate *__glXInitialize(Display *);
 634
 635 extern void __glXPreferEGL(int state);
 636
 637 /************************************************************************/
 638
 639 extern int __glXDebug;
 640
 641 /* This is per-thread storage in an MT environment */
 642 #if defined( PTHREADS )
 643
 644 extern void __glXSetCurrentContext(__GLXcontext * c);
 645
 646 # if defined( GLX_USE_TLS )
 647
 648 extern __thread void *__glX_tls_Context
 649    __attribute__ ((tls_model("initial-exec")));
 650
 651 #  define __glXGetCurrentContext() __glX_tls_Context
 652
 653 # else
 654
 655 extern __GLXcontext *__glXGetCurrentContext(void);
 656
 657 # endif /* defined( GLX_USE_TLS ) */
 658
 659 #else
 660
 661 extern __GLXcontext *__glXcurrentContext;
 662 #define __glXGetCurrentContext() __glXcurrentContext
 663 #define __glXSetCurrentContext(gc) __glXcurrentContext = gc
 664
 665 #endif /* defined( PTHREADS ) */
 666
 667 extern void __glXSetCurrentContextNull(void);
 668
 669 extern void __glXFreeContext(__GLXcontext *);
 670
 671
 672 /*
 673 ** Global lock for all threads in this address space using the GLX
 674 ** extension
 675 */
 676 #if defined( PTHREADS )
 677 extern pthread_mutex_t __glXmutex;
 678 #define __glXLock()    pthread_mutex_lock(&__glXmutex)
 679 #define __glXUnlock()  pthread_mutex_unlock(&__glXmutex)
 680 #else
 681 #define __glXLock()
 682 #define __glXUnlock()
 683 #endif
 684
 685 /*
 686 ** Setup for a command.  Initialize the extension for dpy if necessary.
 687 */
 688 extern CARD8 __glXSetupForCommand(Display * dpy);
 689
 690 /************************************************************************/
 691
 692 /*
 693 ** Data conversion and packing support.
 694 */
 695
 696 extern const GLuint __glXDefaultPixelStore[9];
 697
 698 /* Send an image to the server using RenderLarge. */
 699 extern void __glXSendLargeImage(__GLXcontext * gc, GLint compsize, GLint dim,
 700                                 GLint width, GLint height, GLint depth,
 701                                 GLenum format, GLenum type,
 702                                 const GLvoid * src, GLubyte * pc,
 703                                 GLubyte * modes);
 704
 705 /* Return the size, in bytes, of some pixel data */
 706 extern GLint __glImageSize(GLint, GLint, GLint, GLenum, GLenum, GLenum);
 707
 708 /* Return the number of elements per group of a specified format*/
 709 extern GLint __glElementsPerGroup(GLenum format, GLenum type);
 710
 711 /* Return the number of bytes per element, based on the element type (other
 712 ** than GL_BITMAP).
 713 */
 714 extern GLint __glBytesPerElement(GLenum type);
 715
 716 /*
 717 ** Fill the transport buffer with the data from the users buffer,
 718 ** applying some of the pixel store modes (unpack modes) to the data
 719 ** first.  As a side effect of this call, the "modes" field is
 720 ** updated to contain the modes needed by the server to decode the
 721 ** sent data.
 722 */
 723 extern void __glFillImage(__GLXcontext *, GLint, GLint, GLint, GLint, GLenum,
 724                           GLenum, const GLvoid *, GLubyte *, GLubyte *);
 725
 726 /* Copy map data with a stride into a packed buffer */
 727 extern void __glFillMap1f(GLint, GLint, GLint, const GLfloat *, GLubyte *);
 728 extern void __glFillMap1d(GLint, GLint, GLint, const GLdouble *, GLubyte *);
 729 extern void __glFillMap2f(GLint, GLint, GLint, GLint, GLint,
 730                           const GLfloat *, GLfloat *);
 731 extern void __glFillMap2d(GLint, GLint, GLint, GLint, GLint,
 732                           const GLdouble *, GLdouble *);
 733
 734 /*
 735 ** Empty an image out of the reply buffer into the clients memory applying
 736 ** the pack modes to pack back into the clients requested format.
 737 */
 738 extern void __glEmptyImage(__GLXcontext *, GLint, GLint, GLint, GLint, GLenum,
 739                            GLenum, const GLubyte *, GLvoid *);
 740
 741
 742 /*
 743 ** Allocate and Initialize Vertex Array client state, and free.
 744 */
 745 extern void __glXInitVertexArrayState(__GLXcontext *);
 746 extern void __glXFreeVertexArrayState(__GLXcontext *);
 747
 748 /*
 749 ** Inform the Server of the major and minor numbers and of the client
 750 ** libraries extension string.
 751 */
 752 extern void __glXClientInfo(Display * dpy, int opcode);
 753
 754 /************************************************************************/
 755
 756 /*
 757 ** Declarations that should be in Xlib
 758 */
 759 #ifdef __GL_USE_OUR_PROTOTYPES
 760 extern void _XFlush(Display *);
 761 extern Status _XReply(Display *, xReply *, int, Bool);
 762 extern void _XRead(Display *, void *, long);
 763 extern void _XSend(Display *, const void *, long);
 764 #endif
 765
 766
 767 extern void __glXInitializeVisualConfigFromTags(__GLcontextModes * config,
 768                                                 int count, const INT32 * bp,
 769                                                 Bool tagged_only,
 770                                                 Bool fbconfig_style_tags);
 771
 772 extern char *__glXQueryServerString(Display * dpy, int opcode,
 773                                     CARD32 screen, CARD32 name);
 774 extern char *__glXGetString(Display * dpy, int opcode,
 775                             CARD32 screen, CARD32 name);
 776
 777 extern char *__glXstrdup(const char *str);
 778
 779
 780 extern const char __glXGLClientVersion[];
 781 extern const char __glXGLClientExtensions[];
 782
 783 /* Get the unadjusted system time */
 784 extern int __glXGetUST(int64_t * ust);
 785
 786 extern GLboolean __glXGetMscRateOML(Display * dpy, GLXDrawable drawable,
 787                                     int32_t * numerator,
 788                                     int32_t * denominator);
 789
 790 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
 791 extern GLboolean
 792 __glxGetMscRate(__GLXDRIdrawable *glxDraw,
 793                 int32_t * numerator, int32_t * denominator);
 794
 795 /* So that dri2.c:DRI2WireToEvent() can access
 796  * glx_info->codes->first_event */
 797 XExtDisplayInfo *__glXFindDisplay (Display *dpy);
 798
 799 extern __GLXDRIdrawable *
 800 GetGLXDRIDrawable(Display *dpy, GLXDrawable drawable, int *const scrn_num);
 801
 802 #endif
 803
 804 #endif /* !__GLX_client_h__ */