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