src/glx/x11/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 #define NEED_REPLIES
  41 #define NEED_EVENTS
  42 #include <X11/Xproto.h>
  43 #include <X11/Xlibint.h>
  44 #include <X11/extensions/extutil.h>
  45 #define GLX_GLXEXT_PROTOTYPES
  46 #include <GL/glx.h>
  47 #include <GL/glxext.h>
  48 #include <string.h>
  49 #include <stdlib.h>
  50 #include <stdio.h>
  51 #ifdef WIN32
  52 #include <stdint.h>
  53 #endif
  54 #include "GL/glxint.h"
  55 #include "GL/glxproto.h"
  56 #include "GL/internal/glcore.h"
  57 #include "glapi/glapitable.h"
  58 #include "glxhash.h"
  59 #if defined( PTHREADS )
  60 # include <pthread.h>
  61 #endif
  62
  63 #include "glxextensions.h"
  64
  65
  66 /* If we build the library with gcc's -fvisibility=hidden flag, we'll
  67  * use the PUBLIC macro to mark functions that are to be exported.
  68  *
  69  * We also need to define a USED attribute, so the optimizer doesn't
  70  * inline a static function that we later use in an alias. - ajax
  71  */
  72 #if defined(__GNUC__) && (__GNUC__ * 100 + __GNUC_MINOR__) >= 303
  73 #  define PUBLIC __attribute__((visibility("default")))
  74 #  define USED __attribute__((used))
  75 #else
  76 #  define PUBLIC
  77 #  define USED
  78 #endif
  79
  80
  81
  82 #define GLX_MAJOR_VERSION 1       /* current version numbers */
  83 #define GLX_MINOR_VERSION 4
  84
  85 #define __GLX_MAX_TEXTURE_UNITS 32
  86
  87 typedef struct __GLXscreenConfigsRec __GLXscreenConfigs;
  88 typedef struct __GLXcontextRec __GLXcontext;
  89 typedef struct __GLXdrawableRec __GLXdrawable;
  90 typedef struct __GLXdisplayPrivateRec __GLXdisplayPrivate;
  91 typedef struct _glapi_table __GLapi;
  92
  93 /************************************************************************/
  94
  95 #ifdef GLX_DIRECT_RENDERING
  96
  97 #define containerOf(ptr, type, member)              \
  98     (type *)( (char *)ptr - offsetof(type,member) )
  99
 100 #include <GL/internal/dri_interface.h>
 101
 102
 103 /**
 104  * Display dependent methods.  This structure is initialized during the
 105  * \c driCreateDisplay call.
 106  */
 107 typedef struct __GLXDRIdisplayRec __GLXDRIdisplay;
 108 typedef struct __GLXDRIscreenRec __GLXDRIscreen;
 109 typedef struct __GLXDRIdrawableRec __GLXDRIdrawable;
 110 typedef struct __GLXDRIcontextRec __GLXDRIcontext;
 111
 112 #include "glxextensions.h"
 113
 114 struct __GLXDRIdisplayRec
 115 {
 116     /**
 117      * Method to destroy the private DRI display data.
 118      */
 119    void (*destroyDisplay) (__GLXDRIdisplay * display);
 120
 121    __GLXDRIscreen *(*createScreen) (__GLXscreenConfigs * psc, int screen,
 122                                     __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    void (*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    __DRIdrawable *driDrawable;
 175    GLenum textureFormat;        /* EXT_texture_from_pixmap support */
 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
 186 extern void DRI_glXUseXFont(Font font, int first, int count, int listbase);
 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 /**
 248  * GLX state that needs to be kept on the client.  One of these records
 249  * exist for each context that has been made current by this client.
 250  */
 251 struct __GLXcontextRec
 252 {
 253     /**
 254      * \name Drawing command buffer.
 255      *
 256      * Drawing commands are packed into this buffer before being sent as a
 257      * single GLX protocol request.  The buffer is sent when it overflows or
 258      * is flushed by \c __glXFlushRenderBuffer.  \c pc is the next location
 259      * in the buffer to be filled.  \c limit is described above in the buffer
 260      * slop discussion.
 261      *
 262      * Commands that require large amounts of data to be transfered will
 263      * also use this buffer to hold a header that describes the large
 264      * command.
 265      *
 266      * These must be the first 6 fields since they are static initialized
 267      * in the dummy context in glxext.c
 268      */
 269    /*@{ */
 270    GLubyte *buf;
 271    GLubyte *pc;
 272    GLubyte *limit;
 273    GLubyte *bufEnd;
 274    GLint bufSize;
 275    /*@} */
 276
 277     /**
 278      * The XID of this rendering context.  When the context is created a
 279      * new XID is allocated.  This is set to None when the context is
 280      * destroyed but is still current to some thread. In this case the
 281      * context will be freed on next MakeCurrent.
 282      */
 283    XID xid;
 284
 285     /**
 286      * The XID of the \c shareList context.
 287      */
 288    XID share_xid;
 289
 290     /**
 291      * Screen number.
 292      */
 293    GLint screen;
 294    __GLXscreenConfigs *psc;
 295
 296     /**
 297      * \c GL_TRUE if the context was created with ImportContext, which
 298      * means the server-side context was created by another X client.
 299      */
 300    GLboolean imported;
 301
 302     /**
 303      * The context tag returned by MakeCurrent when this context is made
 304      * current. This tag is used to identify the context that a thread has
 305      * current so that proper server context management can be done.  It is
 306      * used for all context specific commands (i.e., \c Render, \c RenderLarge,
 307      * \c WaitX, \c WaitGL, \c UseXFont, and \c MakeCurrent (for the old
 308      * context)).
 309      */
 310    GLXContextTag currentContextTag;
 311
 312     /**
 313      * \name Rendering mode
 314      *
 315      * The rendering mode is kept on the client as well as the server.
 316      * When \c glRenderMode is called, the buffer associated with the
 317      * previous rendering mode (feedback or select) is filled.
 318      */
 319    /*@{ */
 320    GLenum renderMode;
 321    GLfloat *feedbackBuf;
 322    GLuint *selectBuf;
 323    /*@} */
 324
 325     /**
 326      * This is \c GL_TRUE if the pixel unpack modes are such that an image
 327      * can be unpacked from the clients memory by just copying.  It may
 328      * still be true that the server will have to do some work.  This
 329      * just promises that a straight copy will fetch the correct bytes.
 330      */
 331    GLboolean fastImageUnpack;
 332
 333     /**
 334      * Fill newImage with the unpacked form of \c oldImage getting it
 335      * ready for transport to the server.
 336      */
 337    void (*fillImage) (__GLXcontext *, GLint, GLint, GLint, GLint, GLenum,
 338                       GLenum, const GLvoid *, GLubyte *, GLubyte *);
 339
 340     /**
 341      * Client side attribs.
 342      */
 343    __GLXattributeMachine attributes;
 344
 345     /**
 346      * Client side error code.  This is set when client side gl API
 347      * routines need to set an error because of a bad enumerant or
 348      * running out of memory, etc.
 349      */
 350    GLenum error;
 351
 352     /**
 353      * Whether this context does direct rendering.
 354      */
 355    Bool isDirect;
 356
 357     /**
 358      * \c dpy of current display for this context.  Will be \c NULL if not
 359      * current to any display, or if this is the "dummy context".
 360      */
 361    Display *currentDpy;
 362
 363     /**
 364      * The current drawable for this context.  Will be None if this
 365      * context is not current to any drawable.  currentReadable is below.
 366      */
 367    GLXDrawable currentDrawable;
 368
 369     /**
 370      * \name GL Constant Strings
 371      *
 372      * Constant strings that describe the server implementation
 373      * These pertain to GL attributes, not to be confused with
 374      * GLX versioning attributes.
 375      */
 376    /*@{ */
 377    GLubyte *vendor;
 378    GLubyte *renderer;
 379    GLubyte *version;
 380    GLubyte *extensions;
 381    /*@} */
 382
 383     /**
 384      * Record the dpy this context was created on for later freeing
 385      */
 386    Display *createDpy;
 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    __GLXDRIcontext *driContext;
 407    __DRIcontext *__driContext;
 408 #endif
 409
 410     /**
 411      * The current read-drawable for this context.  Will be None if this
 412      * context is not current to any drawable.
 413      *
 414      * \since Internal API version 20030606.
 415      */
 416    GLXDrawable currentReadable;
 417
 418    /**
 419     * Pointer to client-state data that is private to libGL.  This is only
 420     * used for indirect rendering contexts.
 421     *
 422     * No internal API version change was made for this change.  Client-side
 423     * drivers should NEVER use this data or even care that it exists.
 424     */
 425    void *client_state_private;
 426
 427    /**
 428     * Stored value for \c glXQueryContext attribute \c GLX_RENDER_TYPE.
 429     */
 430    int renderType;
 431
 432    /**
 433     * \name Raw server GL version
 434     *
 435     * True core GL version supported by the server.  This is the raw value
 436     * returned by the server, and it may not reflect what is actually
 437     * supported (or reported) by the client-side library.
 438     */
 439    /*@{ */
 440    int server_major;        /**< Major version number. */
 441    int server_minor;        /**< Minor version number. */
 442    /*@} */
 443
 444    /**
 445     * Thread ID we're currently current in. Zero if none.
 446     */
 447    unsigned long thread_id;
 448
 449    char gl_extension_bits[__GL_EXT_BYTES];
 450 };
 451
 452 #define __glXSetError(gc,code)  \
 453    if (!(gc)->error) {          \
 454       (gc)->error = code;       \
 455    }
 456
 457 extern void __glFreeAttributeState(__GLXcontext *);
 458
 459 /************************************************************************/
 460
 461 /**
 462  * The size of the largest drawing command known to the implementation
 463  * that will use the GLXRender GLX command.  In this case it is
 464  * \c glPolygonStipple.
 465  */
 466 #define __GLX_MAX_SMALL_RENDER_CMD_SIZE 156
 467
 468 /**
 469  * To keep the implementation fast, the code uses a "limit" pointer
 470  * to determine when the drawing command buffer is too full to hold
 471  * another fixed size command.  This constant defines the amount of
 472  * space that must always be available in the drawing command buffer
 473  * at all times for the implementation to work.  It is important that
 474  * the number be just large enough, but not so large as to reduce the
 475  * efficacy of the buffer.  The "+32" is just to keep the code working
 476  * in case somebody counts wrong.
 477  */
 478 #define __GLX_BUFFER_LIMIT_SIZE (__GLX_MAX_SMALL_RENDER_CMD_SIZE + 32)
 479
 480 /**
 481  * This implementation uses a smaller threshold for switching
 482  * to the RenderLarge protocol than the protcol requires so that
 483  * large copies don't occur.
 484  */
 485 #define __GLX_RENDER_CMD_SIZE_LIMIT 4096
 486
 487 /**
 488  * One of these records exists per screen of the display.  It contains
 489  * a pointer to the config data for that screen (if the screen supports GL).
 490  */
 491 struct __GLXscreenConfigsRec
 492 {
 493     /**
 494      * GLX extension string reported by the X-server.
 495      */
 496    const char *serverGLXexts;
 497
 498     /**
 499      * GLX extension string to be reported to applications.  This is the
 500      * set of extensions that the application can actually use.
 501      */
 502    char *effectiveGLXexts;
 503
 504 #ifdef GLX_DIRECT_RENDERING
 505     /**
 506      * Per screen direct rendering interface functions and data.
 507      */
 508    __DRIscreen *__driScreen;
 509    const __DRIcoreExtension *core;
 510    const __DRIlegacyExtension *legacy;
 511    const __DRIswrastExtension *swrast;
 512    const __DRIdri2Extension *dri2;
 513    __glxHashTable *drawHash;
 514    Display *dpy;
 515    int scr, fd;
 516    void *driver;
 517
 518    __GLXDRIscreen *driScreen;
 519
 520    const __DRIconfig **driver_configs;
 521
 522 #ifdef __DRI_COPY_SUB_BUFFER
 523    const __DRIcopySubBufferExtension *driCopySubBuffer;
 524 #endif
 525
 526 #ifdef __DRI_SWAP_CONTROL
 527    const __DRIswapControlExtension *swapControl;
 528 #endif
 529
 530 #ifdef __DRI_ALLOCATE
 531    const __DRIallocateExtension *allocate;
 532 #endif
 533
 534 #ifdef __DRI_FRAME_TRACKING
 535    const __DRIframeTrackingExtension *frameTracking;
 536 #endif
 537
 538 #ifdef __DRI_MEDIA_STREAM_COUNTER
 539    const __DRImediaStreamCounterExtension *msc;
 540 #endif
 541
 542 #ifdef __DRI_TEX_BUFFER
 543    const __DRItexBufferExtension *texBuffer;
 544 #endif
 545
 546 #ifdef __DRI2_FLUSH
 547    const __DRI2flushExtension *f;
 548 #endif
 549
 550 #endif
 551
 552     /**
 553      * Linked list of glx visuals and  fbconfigs for this screen.
 554      */
 555    __GLcontextModes *visuals, *configs;
 556
 557     /**
 558      * Per-screen dynamic GLX extension tracking.  The \c direct_support
 559      * field only contains enough bits for 64 extensions.  Should libGL
 560      * ever need to track more than 64 GLX extensions, we can safely grow
 561      * this field.  The \c __GLXscreenConfigs structure is not used outside
 562      * libGL.
 563      */
 564    /*@{ */
 565    unsigned char direct_support[8];
 566    GLboolean ext_list_first_time;
 567    /*@} */
 568
 569 };
 570
 571 /**
 572  * Per display private data.  One of these records exists for each display
 573  * that is using the OpenGL (GLX) extension.
 574  */
 575 struct __GLXdisplayPrivateRec
 576 {
 577     /**
 578      * Back pointer to the display
 579      */
 580    Display *dpy;
 581
 582     /**
 583      * The \c majorOpcode is common to all connections to the same server.
 584      * It is also copied into the context structure.
 585      */
 586    int majorOpcode;
 587
 588     /**
 589      * \name Server Version
 590      *
 591      * Major and minor version returned by the server during initialization.
 592      */
 593    /*@{ */
 594    int majorVersion, minorVersion;
 595    /*@} */
 596
 597     /**
 598      * \name Storage for the servers GLX vendor and versions strings.
 599      *
 600      * These are the same for all screens on this display. These fields will
 601      * be filled in on demand.
 602      */
 603    /*@{ */
 604    const char *serverGLXvendor;
 605    const char *serverGLXversion;
 606    /*@} */
 607
 608     /**
 609      * Configurations of visuals for all screens on this display.
 610      * Also, per screen data which now includes the server \c GLX_EXTENSION
 611      * string.
 612      */
 613    __GLXscreenConfigs *screenConfigs;
 614
 615 #ifdef GLX_DIRECT_RENDERING
 616     /**
 617      * Per display direct rendering interface functions and data.
 618      */
 619    __GLXDRIdisplay *driswDisplay;
 620    __GLXDRIdisplay *driDisplay;
 621    __GLXDRIdisplay *dri2Display;
 622 #endif
 623 };
 624
 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 #ifdef GLX_DIRECT_RENDERING
 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 #endif
 802
 803 #endif /* !__GLX_client_h__ */