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/glxproto.h"
  53 #include "glapi/glapitable.h"
  54 #include "glcontextmodes.h"
  55 #include "glxhash.h"
  56 #if defined( PTHREADS )
  57 # include <pthread.h>
  58 #endif
  59
  60 #include "glxextensions.h"
  61
  62
  63 /* If we build the library with gcc's -fvisibility=hidden flag, we'll
  64  * use the PUBLIC macro to mark functions that are to be exported.
  65  *
  66  * We also need to define a USED attribute, so the optimizer doesn't
  67  * inline a static function that we later use in an alias. - ajax
  68  */
  69 #if defined(__GNUC__)
  70 #  define PUBLIC __attribute__((visibility("default")))
  71 #  define USED __attribute__((used))
  72 #else
  73 #  define PUBLIC
  74 #  define USED
  75 #endif
  76
  77
  78
  79 #define GLX_MAJOR_VERSION 1       /* current version numbers */
  80 #define GLX_MINOR_VERSION 4
  81
  82 #define __GLX_MAX_TEXTURE_UNITS 32
  83
  84 typedef struct __GLXscreenConfigsRec __GLXscreenConfigs;
  85 typedef struct __GLXcontextRec __GLXcontext;
  86 typedef struct __GLXdrawableRec __GLXdrawable;
  87 typedef struct __GLXdisplayPrivateRec __GLXdisplayPrivate;
  88 typedef struct _glapi_table __GLapi;
  89
  90 /************************************************************************/
  91
  92 #ifdef GLX_DIRECT_RENDERING
  93
  94 #define containerOf(ptr, type, member)              \
  95     (type *)( (char *)ptr - offsetof(type,member) )
  96
  97 extern void DRI_glXUseXFont(GLXContext CC,
  98                             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    int (*getDrawableMSC)(__GLXscreenConfigs *psc, __GLXDRIdrawable *pdraw,
 143                          int64_t *ust, int64_t *msc, int64_t *sbc);
 144    int (*waitForMSC)(__GLXDRIdrawable *pdraw, int64_t target_msc,
 145                      int64_t divisor, int64_t remainder, int64_t *ust,
 146                      int64_t *msc, int64_t *sbc);
 147    int (*waitForSBC)(__GLXDRIdrawable *pdraw, int64_t target_sbc, int64_t *ust,
 148                      int64_t *msc, int64_t *sbc);
 149    int (*setSwapInterval)(__GLXDRIdrawable *pdraw, int interval);
 150    int (*getSwapInterval)(__GLXDRIdrawable *pdraw);
 151 };
 152
 153 struct __GLXDRIcontextRec
 154 {
 155    Bool(*bindContext) (__GLXcontext *context, __GLXDRIdrawable *pdraw,
 156                        __GLXDRIdrawable *pread);
 157    void (*unbindContext) (__GLXcontext *context);
 158 };
 159
 160 struct __GLXDRIdrawableRec
 161 {
 162    void (*destroyDrawable) (__GLXDRIdrawable * drawable);
 163
 164    XID xDrawable;
 165    XID drawable;
 166    __GLXscreenConfigs *psc;
 167    GLenum textureTarget;
 168    GLenum textureFormat;        /* EXT_texture_from_pixmap support */
 169    unsigned long eventMask;
 170 };
 171
 172 /*
 173 ** Function to create and DRI display data and initialize the display
 174 ** dependent methods.
 175 */
 176 extern __GLXDRIdisplay *driswCreateDisplay(Display * dpy);
 177 extern __GLXDRIdisplay *driCreateDisplay(Display * dpy);
 178 extern __GLXDRIdisplay *dri2CreateDisplay(Display * dpy);
 179 extern void dri2InvalidateBuffers(Display *dpy, XID drawable);
 180
 181
 182 /*
 183 ** Functions to obtain driver configuration information from a direct
 184 ** rendering client application
 185 */
 186 extern const char *glXGetScreenDriver(Display * dpy, int scrNum);
 187
 188 extern const char *glXGetDriverConfig(const char *driverName);
 189
 190 #endif
 191
 192 /************************************************************************/
 193
 194 #define __GL_CLIENT_ATTRIB_STACK_DEPTH 16
 195
 196 typedef struct __GLXpixelStoreModeRec
 197 {
 198    GLboolean swapEndian;
 199    GLboolean lsbFirst;
 200    GLuint rowLength;
 201    GLuint imageHeight;
 202    GLuint imageDepth;
 203    GLuint skipRows;
 204    GLuint skipPixels;
 205    GLuint skipImages;
 206    GLuint alignment;
 207 } __GLXpixelStoreMode;
 208
 209
 210 typedef struct __GLXattributeRec
 211 {
 212    GLuint mask;
 213
 214     /**
 215      * Pixel storage state.  Most of the pixel store mode state is kept
 216      * here and used by the client code to manage the packing and
 217      * unpacking of data sent to/received from the server.
 218      */
 219    __GLXpixelStoreMode storePack, storeUnpack;
 220
 221     /**
 222      * Is EXT_vertex_array / GL 1.1 DrawArrays protocol specifically
 223      * disabled?
 224      */
 225    GLboolean NoDrawArraysProtocol;
 226
 227     /**
 228      * Vertex Array storage state.  The vertex array component
 229      * state is stored here and is used to manage the packing of
 230      * DrawArrays data sent to the server.
 231      */
 232    struct array_state_vector *array_state;
 233 } __GLXattribute;
 234
 235 typedef struct __GLXattributeMachineRec
 236 {
 237    __GLXattribute *stack[__GL_CLIENT_ATTRIB_STACK_DEPTH];
 238    __GLXattribute **stackPointer;
 239 } __GLXattributeMachine;
 240
 241 struct glx_context_vtable {
 242    void (*destroy)(__GLXcontext *ctx);
 243    void (*wait_gl)(__GLXcontext *ctx);
 244    void (*wait_x)(__GLXcontext *ctx);
 245    void (*use_x_font)(__GLXcontext *ctx,
 246                       Font font, int first, int count, int listBase);
 247    void (*bind_tex_image)(Display * dpy,
 248                           GLXDrawable drawable,
 249                           int buffer, const int *attrib_list);
 250    void (*release_tex_image)(Display * dpy, GLXDrawable drawable, int buffer);
 251
 252 };
 253
 254 extern void
 255 glx_send_destroy_context(Display *dpy, XID xid);
 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      * Maximum small render command size.  This is the smaller of 64k and
 395      * the size of the above buffer.
 396      */
 397    GLint maxSmallRenderCommandSize;
 398
 399     /**
 400      * Major opcode for the extension.  Copied here so a lookup isn't
 401      * needed.
 402      */
 403    GLint majorOpcode;
 404
 405     /**
 406      * Pointer to the mode used to create this context.
 407      */
 408    const __GLcontextModes *mode;
 409
 410 #ifdef GLX_DIRECT_RENDERING
 411 #ifdef GLX_USE_APPLEGL
 412    void *driContext;
 413    Bool do_destroy;
 414 #else
 415    __GLXDRIcontext *driContext;
 416 #endif
 417 #endif
 418
 419     /**
 420      * The current read-drawable for this context.  Will be None if this
 421      * context is not current to any drawable.
 422      *
 423      * \since Internal API version 20030606.
 424      */
 425    GLXDrawable currentReadable;
 426
 427    /**
 428     * Pointer to client-state data that is private to libGL.  This is only
 429     * used for indirect rendering contexts.
 430     *
 431     * No internal API version change was made for this change.  Client-side
 432     * drivers should NEVER use this data or even care that it exists.
 433     */
 434    void *client_state_private;
 435
 436    /**
 437     * Stored value for \c glXQueryContext attribute \c GLX_RENDER_TYPE.
 438     */
 439    int renderType;
 440
 441    /**
 442     * \name Raw server GL version
 443     *
 444     * True core GL version supported by the server.  This is the raw value
 445     * returned by the server, and it may not reflect what is actually
 446     * supported (or reported) by the client-side library.
 447     */
 448    /*@{ */
 449    int server_major;        /**< Major version number. */
 450    int server_minor;        /**< Minor version number. */
 451    /*@} */
 452
 453    /**
 454     * Thread ID we're currently current in. Zero if none.
 455     */
 456    unsigned long thread_id;
 457
 458    char gl_extension_bits[__GL_EXT_BYTES];
 459
 460    const struct glx_context_vtable *vtable;
 461 };
 462
 463 extern Bool
 464 glx_context_init(__GLXcontext *gc,
 465                  __GLXscreenConfigs *psc, const __GLcontextModes *fbconfig);
 466
 467 #define __glXSetError(gc,code)  \
 468    if (!(gc)->error) {          \
 469       (gc)->error = code;       \
 470    }
 471
 472 extern void __glFreeAttributeState(__GLXcontext *);
 473
 474 /************************************************************************/
 475
 476 /**
 477  * The size of the largest drawing command known to the implementation
 478  * that will use the GLXRender GLX command.  In this case it is
 479  * \c glPolygonStipple.
 480  */
 481 #define __GLX_MAX_SMALL_RENDER_CMD_SIZE 156
 482
 483 /**
 484  * To keep the implementation fast, the code uses a "limit" pointer
 485  * to determine when the drawing command buffer is too full to hold
 486  * another fixed size command.  This constant defines the amount of
 487  * space that must always be available in the drawing command buffer
 488  * at all times for the implementation to work.  It is important that
 489  * the number be just large enough, but not so large as to reduce the
 490  * efficacy of the buffer.  The "+32" is just to keep the code working
 491  * in case somebody counts wrong.
 492  */
 493 #define __GLX_BUFFER_LIMIT_SIZE (__GLX_MAX_SMALL_RENDER_CMD_SIZE + 32)
 494
 495 /**
 496  * This implementation uses a smaller threshold for switching
 497  * to the RenderLarge protocol than the protcol requires so that
 498  * large copies don't occur.
 499  */
 500 #define __GLX_RENDER_CMD_SIZE_LIMIT 4096
 501
 502 /**
 503  * One of these records exists per screen of the display.  It contains
 504  * a pointer to the config data for that screen (if the screen supports GL).
 505  */
 506 struct glx_screen_vtable {
 507    __GLXcontext *(*create_context)(__GLXscreenConfigs *psc,
 508                                    const __GLcontextModes *mode,
 509                                    GLXContext shareList, int renderType);
 510 };
 511
 512 struct __GLXscreenConfigsRec
 513 {
 514    const struct glx_screen_vtable *vtable;
 515
 516     /**
 517      * GLX extension string reported by the X-server.
 518      */
 519    const char *serverGLXexts;
 520
 521     /**
 522      * GLX extension string to be reported to applications.  This is the
 523      * set of extensions that the application can actually use.
 524      */
 525    char *effectiveGLXexts;
 526
 527    __GLXdisplayPrivate *display;
 528
 529 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
 530     /**
 531      * Per screen direct rendering interface functions and data.
 532      */
 533    Display *dpy;
 534    int scr;
 535
 536    __GLXDRIscreen *driScreen;
 537 #endif
 538
 539     /**
 540      * Linked list of glx visuals and  fbconfigs for this screen.
 541      */
 542    __GLcontextModes *visuals, *configs;
 543
 544     /**
 545      * Per-screen dynamic GLX extension tracking.  The \c direct_support
 546      * field only contains enough bits for 64 extensions.  Should libGL
 547      * ever need to track more than 64 GLX extensions, we can safely grow
 548      * this field.  The \c __GLXscreenConfigs structure is not used outside
 549      * libGL.
 550      */
 551    /*@{ */
 552    unsigned char direct_support[8];
 553    GLboolean ext_list_first_time;
 554    /*@} */
 555
 556 };
 557
 558 /**
 559  * Per display private data.  One of these records exists for each display
 560  * that is using the OpenGL (GLX) extension.
 561  */
 562 struct __GLXdisplayPrivateRec
 563 {
 564    /* The extension protocol codes */
 565    XExtCodes *codes;
 566    struct __GLXdisplayPrivateRec *next;
 567
 568     /**
 569      * Back pointer to the display
 570      */
 571    Display *dpy;
 572
 573     /**
 574      * The \c majorOpcode is common to all connections to the same server.
 575      * It is also copied into the context structure.
 576      */
 577    int majorOpcode;
 578
 579     /**
 580      * \name Server Version
 581      *
 582      * Major and minor version returned by the server during initialization.
 583      */
 584    /*@{ */
 585    int majorVersion, minorVersion;
 586    /*@} */
 587
 588     /**
 589      * \name Storage for the servers GLX vendor and versions strings.
 590      *
 591      * These are the same for all screens on this display. These fields will
 592      * be filled in on demand.
 593      */
 594    /*@{ */
 595    const char *serverGLXvendor;
 596    const char *serverGLXversion;
 597    /*@} */
 598
 599     /**
 600      * Configurations of visuals for all screens on this display.
 601      * Also, per screen data which now includes the server \c GLX_EXTENSION
 602      * string.
 603      */
 604    __GLXscreenConfigs **screenConfigs;
 605
 606 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
 607    __glxHashTable *drawHash;
 608
 609     /**
 610      * Per display direct rendering interface functions and data.
 611      */
 612    __GLXDRIdisplay *driswDisplay;
 613    __GLXDRIdisplay *driDisplay;
 614    __GLXDRIdisplay *dri2Display;
 615 #endif
 616 };
 617
 618 extern int
 619 glx_screen_init(__GLXscreenConfigs *psc,
 620                 int screen, __GLXdisplayPrivate * priv);
 621
 622 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
 623 extern __GLXDRIdrawable *
 624 dri2GetGlxDrawableFromXDrawableId(Display *dpy, XID id);
 625 #endif
 626
 627 extern GLubyte *__glXFlushRenderBuffer(__GLXcontext *, GLubyte *);
 628
 629 extern void __glXSendLargeChunk(__GLXcontext * gc, GLint requestNumber,
 630                                 GLint totalRequests,
 631                                 const GLvoid * data, GLint dataLen);
 632
 633 extern void __glXSendLargeCommand(__GLXcontext *, const GLvoid *, GLint,
 634                                   const GLvoid *, GLint);
 635
 636 /* Initialize the GLX extension for dpy */
 637 extern __GLXdisplayPrivate *__glXInitialize(Display *);
 638
 639 extern void __glXPreferEGL(int state);
 640
 641 /************************************************************************/
 642
 643 extern int __glXDebug;
 644
 645 /* This is per-thread storage in an MT environment */
 646 #if defined( PTHREADS )
 647
 648 extern void __glXSetCurrentContext(__GLXcontext * c);
 649
 650 # if defined( GLX_USE_TLS )
 651
 652 extern __thread void *__glX_tls_Context
 653    __attribute__ ((tls_model("initial-exec")));
 654
 655 #  define __glXGetCurrentContext() __glX_tls_Context
 656
 657 # else
 658
 659 extern __GLXcontext *__glXGetCurrentContext(void);
 660
 661 # endif /* defined( GLX_USE_TLS ) */
 662
 663 #else
 664
 665 extern __GLXcontext *__glXcurrentContext;
 666 #define __glXGetCurrentContext() __glXcurrentContext
 667 #define __glXSetCurrentContext(gc) __glXcurrentContext = gc
 668
 669 #endif /* defined( PTHREADS ) */
 670
 671 extern void __glXSetCurrentContextNull(void);
 672
 673
 674 /*
 675 ** Global lock for all threads in this address space using the GLX
 676 ** extension
 677 */
 678 #if defined( PTHREADS )
 679 extern pthread_mutex_t __glXmutex;
 680 #define __glXLock()    pthread_mutex_lock(&__glXmutex)
 681 #define __glXUnlock()  pthread_mutex_unlock(&__glXmutex)
 682 #else
 683 #define __glXLock()
 684 #define __glXUnlock()
 685 #endif
 686
 687 /*
 688 ** Setup for a command.  Initialize the extension for dpy if necessary.
 689 */
 690 extern CARD8 __glXSetupForCommand(Display * dpy);
 691
 692 /************************************************************************/
 693
 694 /*
 695 ** Data conversion and packing support.
 696 */
 697
 698 extern const GLuint __glXDefaultPixelStore[9];
 699
 700 /* Send an image to the server using RenderLarge. */
 701 extern void __glXSendLargeImage(__GLXcontext * gc, GLint compsize, GLint dim,
 702                                 GLint width, GLint height, GLint depth,
 703                                 GLenum format, GLenum type,
 704                                 const GLvoid * src, GLubyte * pc,
 705                                 GLubyte * modes);
 706
 707 /* Return the size, in bytes, of some pixel data */
 708 extern GLint __glImageSize(GLint, GLint, GLint, GLenum, GLenum, GLenum);
 709
 710 /* Return the number of elements per group of a specified format*/
 711 extern GLint __glElementsPerGroup(GLenum format, GLenum type);
 712
 713 /* Return the number of bytes per element, based on the element type (other
 714 ** than GL_BITMAP).
 715 */
 716 extern GLint __glBytesPerElement(GLenum type);
 717
 718 /*
 719 ** Fill the transport buffer with the data from the users buffer,
 720 ** applying some of the pixel store modes (unpack modes) to the data
 721 ** first.  As a side effect of this call, the "modes" field is
 722 ** updated to contain the modes needed by the server to decode the
 723 ** sent data.
 724 */
 725 extern void __glFillImage(__GLXcontext *, GLint, GLint, GLint, GLint, GLenum,
 726                           GLenum, const GLvoid *, GLubyte *, GLubyte *);
 727
 728 /* Copy map data with a stride into a packed buffer */
 729 extern void __glFillMap1f(GLint, GLint, GLint, const GLfloat *, GLubyte *);
 730 extern void __glFillMap1d(GLint, GLint, GLint, const GLdouble *, GLubyte *);
 731 extern void __glFillMap2f(GLint, GLint, GLint, GLint, GLint,
 732                           const GLfloat *, GLfloat *);
 733 extern void __glFillMap2d(GLint, GLint, GLint, GLint, GLint,
 734                           const GLdouble *, GLdouble *);
 735
 736 /*
 737 ** Empty an image out of the reply buffer into the clients memory applying
 738 ** the pack modes to pack back into the clients requested format.
 739 */
 740 extern void __glEmptyImage(__GLXcontext *, GLint, GLint, GLint, GLint, GLenum,
 741                            GLenum, const GLubyte *, GLvoid *);
 742
 743
 744 /*
 745 ** Allocate and Initialize Vertex Array client state, and free.
 746 */
 747 extern void __glXInitVertexArrayState(__GLXcontext *);
 748 extern void __glXFreeVertexArrayState(__GLXcontext *);
 749
 750 /*
 751 ** Inform the Server of the major and minor numbers and of the client
 752 ** libraries extension string.
 753 */
 754 extern void __glXClientInfo(Display * dpy, int opcode);
 755
 756 /************************************************************************/
 757
 758 /*
 759 ** Declarations that should be in Xlib
 760 */
 761 #ifdef __GL_USE_OUR_PROTOTYPES
 762 extern void _XFlush(Display *);
 763 extern Status _XReply(Display *, xReply *, int, Bool);
 764 extern void _XRead(Display *, void *, long);
 765 extern void _XSend(Display *, const void *, long);
 766 #endif
 767
 768
 769 extern void __glXInitializeVisualConfigFromTags(__GLcontextModes * config,
 770                                                 int count, const INT32 * bp,
 771                                                 Bool tagged_only,
 772                                                 Bool fbconfig_style_tags);
 773
 774 extern char *__glXQueryServerString(Display * dpy, int opcode,
 775                                     CARD32 screen, CARD32 name);
 776 extern char *__glXGetString(Display * dpy, int opcode,
 777                             CARD32 screen, CARD32 name);
 778
 779 extern char *__glXstrdup(const char *str);
 780
 781
 782 extern const char __glXGLClientVersion[];
 783 extern const char __glXGLClientExtensions[];
 784
 785 /* Get the unadjusted system time */
 786 extern int __glXGetUST(int64_t * ust);
 787
 788 extern GLboolean __glXGetMscRateOML(Display * dpy, GLXDrawable drawable,
 789                                     int32_t * numerator,
 790                                     int32_t * denominator);
 791
 792 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
 793 extern GLboolean
 794 __glxGetMscRate(__GLXDRIdrawable *glxDraw,
 795                 int32_t * numerator, int32_t * denominator);
 796
 797 /* So that dri2.c:DRI2WireToEvent() can access
 798  * glx_info->codes->first_event */
 799 XExtDisplayInfo *__glXFindDisplay (Display *dpy);
 800
 801 extern void
 802 GarbageCollectDRIDrawables(__GLXscreenConfigs *psc);
 803
 804 extern __GLXDRIdrawable *
 805 GetGLXDRIDrawable(Display *dpy, GLXDrawable drawable);
 806
 807 #endif
 808
 809 extern __GLXscreenConfigs *
 810 indirect_create_screen(int screen, __GLXdisplayPrivate * priv);
 811
 812 #endif /* !__GLX_client_h__ */