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