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    __DRIdrawable *driDrawable;
 177    GLenum textureFormat;        /* EXT_texture_from_pixmap support */
 178    unsigned long eventMask;
 179 };
 180
 181 /*
 182 ** Function to create and DRI display data and initialize the display
 183 ** dependent methods.
 184 */
 185 extern __GLXDRIdisplay *driswCreateDisplay(Display * dpy);
 186 extern __GLXDRIdisplay *driCreateDisplay(Display * dpy);
 187 extern __GLXDRIdisplay *dri2CreateDisplay(Display * dpy);
 188 extern void dri2InvalidateBuffers(Display *dpy, XID drawable);
 189
 190
 191 /*
 192 ** Functions to obtain driver configuration information from a direct
 193 ** rendering client application
 194 */
 195 extern const char *glXGetScreenDriver(Display * dpy, int scrNum);
 196
 197 extern const char *glXGetDriverConfig(const char *driverName);
 198
 199 #endif
 200
 201 /************************************************************************/
 202
 203 #define __GL_CLIENT_ATTRIB_STACK_DEPTH 16
 204
 205 typedef struct __GLXpixelStoreModeRec
 206 {
 207    GLboolean swapEndian;
 208    GLboolean lsbFirst;
 209    GLuint rowLength;
 210    GLuint imageHeight;
 211    GLuint imageDepth;
 212    GLuint skipRows;
 213    GLuint skipPixels;
 214    GLuint skipImages;
 215    GLuint alignment;
 216 } __GLXpixelStoreMode;
 217
 218
 219 typedef struct __GLXattributeRec
 220 {
 221    GLuint mask;
 222
 223     /**
 224      * Pixel storage state.  Most of the pixel store mode state is kept
 225      * here and used by the client code to manage the packing and
 226      * unpacking of data sent to/received from the server.
 227      */
 228    __GLXpixelStoreMode storePack, storeUnpack;
 229
 230     /**
 231      * Is EXT_vertex_array / GL 1.1 DrawArrays protocol specifically
 232      * disabled?
 233      */
 234    GLboolean NoDrawArraysProtocol;
 235
 236     /**
 237      * Vertex Array storage state.  The vertex array component
 238      * state is stored here and is used to manage the packing of
 239      * DrawArrays data sent to the server.
 240      */
 241    struct array_state_vector *array_state;
 242 } __GLXattribute;
 243
 244 typedef struct __GLXattributeMachineRec
 245 {
 246    __GLXattribute *stack[__GL_CLIENT_ATTRIB_STACK_DEPTH];
 247    __GLXattribute **stackPointer;
 248 } __GLXattributeMachine;
 249
 250 struct glx_context_vtable {
 251    void (*bind_tex_image)(Display * dpy,
 252                           GLXDrawable drawable,
 253                           int buffer, const int *attrib_list);
 254    void (*release_tex_image)(Display * dpy, GLXDrawable drawable, int buffer);
 255
 256 };
 257
 258 /**
 259  * GLX state that needs to be kept on the client.  One of these records
 260  * exist for each context that has been made current by this client.
 261  */
 262 struct __GLXcontextRec
 263 {
 264     /**
 265      * \name Drawing command buffer.
 266      *
 267      * Drawing commands are packed into this buffer before being sent as a
 268      * single GLX protocol request.  The buffer is sent when it overflows or
 269      * is flushed by \c __glXFlushRenderBuffer.  \c pc is the next location
 270      * in the buffer to be filled.  \c limit is described above in the buffer
 271      * slop discussion.
 272      *
 273      * Commands that require large amounts of data to be transfered will
 274      * also use this buffer to hold a header that describes the large
 275      * command.
 276      *
 277      * These must be the first 6 fields since they are static initialized
 278      * in the dummy context in glxext.c
 279      */
 280    /*@{ */
 281    GLubyte *buf;
 282    GLubyte *pc;
 283    GLubyte *limit;
 284    GLubyte *bufEnd;
 285    GLint bufSize;
 286    /*@} */
 287
 288     /**
 289      * The XID of this rendering context.  When the context is created a
 290      * new XID is allocated.  This is set to None when the context is
 291      * destroyed but is still current to some thread. In this case the
 292      * context will be freed on next MakeCurrent.
 293      */
 294    XID xid;
 295
 296     /**
 297      * The XID of the \c shareList context.
 298      */
 299    XID share_xid;
 300
 301     /**
 302      * Screen number.
 303      */
 304    GLint screen;
 305    __GLXscreenConfigs *psc;
 306
 307     /**
 308      * \c GL_TRUE if the context was created with ImportContext, which
 309      * means the server-side context was created by another X client.
 310      */
 311    GLboolean imported;
 312
 313     /**
 314      * The context tag returned by MakeCurrent when this context is made
 315      * current. This tag is used to identify the context that a thread has
 316      * current so that proper server context management can be done.  It is
 317      * used for all context specific commands (i.e., \c Render, \c RenderLarge,
 318      * \c WaitX, \c WaitGL, \c UseXFont, and \c MakeCurrent (for the old
 319      * context)).
 320      */
 321    GLXContextTag currentContextTag;
 322
 323     /**
 324      * \name Rendering mode
 325      *
 326      * The rendering mode is kept on the client as well as the server.
 327      * When \c glRenderMode is called, the buffer associated with the
 328      * previous rendering mode (feedback or select) is filled.
 329      */
 330    /*@{ */
 331    GLenum renderMode;
 332    GLfloat *feedbackBuf;
 333    GLuint *selectBuf;
 334    /*@} */
 335
 336     /**
 337      * This is \c GL_TRUE if the pixel unpack modes are such that an image
 338      * can be unpacked from the clients memory by just copying.  It may
 339      * still be true that the server will have to do some work.  This
 340      * just promises that a straight copy will fetch the correct bytes.
 341      */
 342    GLboolean fastImageUnpack;
 343
 344     /**
 345      * Fill newImage with the unpacked form of \c oldImage getting it
 346      * ready for transport to the server.
 347      */
 348    void (*fillImage) (__GLXcontext *, GLint, GLint, GLint, GLint, GLenum,
 349                       GLenum, const GLvoid *, GLubyte *, GLubyte *);
 350
 351     /**
 352      * Client side attribs.
 353      */
 354    __GLXattributeMachine attributes;
 355
 356     /**
 357      * Client side error code.  This is set when client side gl API
 358      * routines need to set an error because of a bad enumerant or
 359      * running out of memory, etc.
 360      */
 361    GLenum error;
 362
 363     /**
 364      * Whether this context does direct rendering.
 365      */
 366    Bool isDirect;
 367
 368     /**
 369      * \c dpy of current display for this context.  Will be \c NULL if not
 370      * current to any display, or if this is the "dummy context".
 371      */
 372    Display *currentDpy;
 373
 374     /**
 375      * The current drawable for this context.  Will be None if this
 376      * context is not current to any drawable.  currentReadable is below.
 377      */
 378    GLXDrawable currentDrawable;
 379
 380     /**
 381      * \name GL Constant Strings
 382      *
 383      * Constant strings that describe the server implementation
 384      * These pertain to GL attributes, not to be confused with
 385      * GLX versioning attributes.
 386      */
 387    /*@{ */
 388    GLubyte *vendor;
 389    GLubyte *renderer;
 390    GLubyte *version;
 391    GLubyte *extensions;
 392    /*@} */
 393
 394     /**
 395      * Record the dpy this context was created on for later freeing
 396      */
 397    Display *createDpy;
 398
 399     /**
 400      * Maximum small render command size.  This is the smaller of 64k and
 401      * the size of the above buffer.
 402      */
 403    GLint maxSmallRenderCommandSize;
 404
 405     /**
 406      * Major opcode for the extension.  Copied here so a lookup isn't
 407      * needed.
 408      */
 409    GLint majorOpcode;
 410
 411     /**
 412      * Pointer to the mode used to create this context.
 413      */
 414    const __GLcontextModes *mode;
 415
 416 #ifdef GLX_DIRECT_RENDERING
 417 #ifdef GLX_USE_APPLEGL
 418    void *driContext;
 419    Bool do_destroy;
 420 #else
 421    __GLXDRIcontext *driContext;
 422    __DRIcontext *__driContext;
 423 #endif
 424 #endif
 425
 426     /**
 427      * The current read-drawable for this context.  Will be None if this
 428      * context is not current to any drawable.
 429      *
 430      * \since Internal API version 20030606.
 431      */
 432    GLXDrawable currentReadable;
 433
 434    /**
 435     * Pointer to client-state data that is private to libGL.  This is only
 436     * used for indirect rendering contexts.
 437     *
 438     * No internal API version change was made for this change.  Client-side
 439     * drivers should NEVER use this data or even care that it exists.
 440     */
 441    void *client_state_private;
 442
 443    /**
 444     * Stored value for \c glXQueryContext attribute \c GLX_RENDER_TYPE.
 445     */
 446    int renderType;
 447
 448    /**
 449     * \name Raw server GL version
 450     *
 451     * True core GL version supported by the server.  This is the raw value
 452     * returned by the server, and it may not reflect what is actually
 453     * supported (or reported) by the client-side library.
 454     */
 455    /*@{ */
 456    int server_major;        /**< Major version number. */
 457    int server_minor;        /**< Minor version number. */
 458    /*@} */
 459
 460    /**
 461     * Thread ID we're currently current in. Zero if none.
 462     */
 463    unsigned long thread_id;
 464
 465    char gl_extension_bits[__GL_EXT_BYTES];
 466
 467    const struct glx_context_vtable *vtable;
 468 };
 469
 470 #define __glXSetError(gc,code)  \
 471    if (!(gc)->error) {          \
 472       (gc)->error = code;       \
 473    }
 474
 475 extern void __glFreeAttributeState(__GLXcontext *);
 476
 477 /************************************************************************/
 478
 479 /**
 480  * The size of the largest drawing command known to the implementation
 481  * that will use the GLXRender GLX command.  In this case it is
 482  * \c glPolygonStipple.
 483  */
 484 #define __GLX_MAX_SMALL_RENDER_CMD_SIZE 156
 485
 486 /**
 487  * To keep the implementation fast, the code uses a "limit" pointer
 488  * to determine when the drawing command buffer is too full to hold
 489  * another fixed size command.  This constant defines the amount of
 490  * space that must always be available in the drawing command buffer
 491  * at all times for the implementation to work.  It is important that
 492  * the number be just large enough, but not so large as to reduce the
 493  * efficacy of the buffer.  The "+32" is just to keep the code working
 494  * in case somebody counts wrong.
 495  */
 496 #define __GLX_BUFFER_LIMIT_SIZE (__GLX_MAX_SMALL_RENDER_CMD_SIZE + 32)
 497
 498 /**
 499  * This implementation uses a smaller threshold for switching
 500  * to the RenderLarge protocol than the protcol requires so that
 501  * large copies don't occur.
 502  */
 503 #define __GLX_RENDER_CMD_SIZE_LIMIT 4096
 504
 505 /**
 506  * One of these records exists per screen of the display.  It contains
 507  * a pointer to the config data for that screen (if the screen supports GL).
 508  */
 509 struct __GLXscreenConfigsRec
 510 {
 511     /**
 512      * GLX extension string reported by the X-server.
 513      */
 514    const char *serverGLXexts;
 515
 516     /**
 517      * GLX extension string to be reported to applications.  This is the
 518      * set of extensions that the application can actually use.
 519      */
 520    char *effectiveGLXexts;
 521
 522    /**
 523     * Context vtable to use for direct contexts on this screen
 524     */
 525    const struct glx_context_vtable *direct_context_vtable;
 526
 527 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
 528     /**
 529      * Per screen direct rendering interface functions and data.
 530      */
 531    __glxHashTable *drawHash;
 532    Display *dpy;
 533    int scr;
 534
 535    __GLXDRIscreen *driScreen;
 536
 537    const __DRIconfig **driver_configs;
 538
 539 #ifdef __DRI_COPY_SUB_BUFFER
 540    const __DRIcopySubBufferExtension *driCopySubBuffer;
 541 #endif
 542
 543 #endif
 544
 545     /**
 546      * Linked list of glx visuals and  fbconfigs for this screen.
 547      */
 548    __GLcontextModes *visuals, *configs;
 549
 550     /**
 551      * Per-screen dynamic GLX extension tracking.  The \c direct_support
 552      * field only contains enough bits for 64 extensions.  Should libGL
 553      * ever need to track more than 64 GLX extensions, we can safely grow
 554      * this field.  The \c __GLXscreenConfigs structure is not used outside
 555      * libGL.
 556      */
 557    /*@{ */
 558    unsigned char direct_support[8];
 559    GLboolean ext_list_first_time;
 560    /*@} */
 561
 562 };
 563
 564 /**
 565  * Per display private data.  One of these records exists for each display
 566  * that is using the OpenGL (GLX) extension.
 567  */
 568 struct __GLXdisplayPrivateRec
 569 {
 570     /**
 571      * Back pointer to the display
 572      */
 573    Display *dpy;
 574
 575     /**
 576      * The \c majorOpcode is common to all connections to the same server.
 577      * It is also copied into the context structure.
 578      */
 579    int majorOpcode;
 580
 581     /**
 582      * \name Server Version
 583      *
 584      * Major and minor version returned by the server during initialization.
 585      */
 586    /*@{ */
 587    int majorVersion, minorVersion;
 588    /*@} */
 589
 590     /**
 591      * \name Storage for the servers GLX vendor and versions strings.
 592      *
 593      * These are the same for all screens on this display. These fields will
 594      * be filled in on demand.
 595      */
 596    /*@{ */
 597    const char *serverGLXvendor;
 598    const char *serverGLXversion;
 599    /*@} */
 600
 601     /**
 602      * Configurations of visuals for all screens on this display.
 603      * Also, per screen data which now includes the server \c GLX_EXTENSION
 604      * string.
 605      */
 606    __GLXscreenConfigs **screenConfigs;
 607
 608 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
 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 extern __GLXDRIdrawable *
 623 dri2GetGlxDrawableFromXDrawableId(Display *dpy, XID id);
 624
 625 extern GLubyte *__glXFlushRenderBuffer(__GLXcontext *, GLubyte *);
 626
 627 extern void __glXSendLargeChunk(__GLXcontext * gc, GLint requestNumber,
 628                                 GLint totalRequests,
 629                                 const GLvoid * data, GLint dataLen);
 630
 631 extern void __glXSendLargeCommand(__GLXcontext *, const GLvoid *, GLint,
 632                                   const GLvoid *, GLint);
 633
 634 /* Initialize the GLX extension for dpy */
 635 extern __GLXdisplayPrivate *__glXInitialize(Display *);
 636
 637 extern void __glXPreferEGL(int state);
 638
 639 /************************************************************************/
 640
 641 extern int __glXDebug;
 642
 643 /* This is per-thread storage in an MT environment */
 644 #if defined( PTHREADS )
 645
 646 extern void __glXSetCurrentContext(__GLXcontext * c);
 647
 648 # if defined( GLX_USE_TLS )
 649
 650 extern __thread void *__glX_tls_Context
 651    __attribute__ ((tls_model("initial-exec")));
 652
 653 #  define __glXGetCurrentContext() __glX_tls_Context
 654
 655 # else
 656
 657 extern __GLXcontext *__glXGetCurrentContext(void);
 658
 659 # endif /* defined( GLX_USE_TLS ) */
 660
 661 #else
 662
 663 extern __GLXcontext *__glXcurrentContext;
 664 #define __glXGetCurrentContext() __glXcurrentContext
 665 #define __glXSetCurrentContext(gc) __glXcurrentContext = gc
 666
 667 #endif /* defined( PTHREADS ) */
 668
 669 extern void __glXSetCurrentContextNull(void);
 670
 671 extern void __glXFreeContext(__GLXcontext *);
 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 GLboolean
 794 __driGetMscRateOML(__DRIdrawable * draw,
 795                    int32_t * numerator, int32_t * denominator, void *private);
 796
 797 /* So that dri2.c:DRI2WireToEvent() can access
 798  * glx_info->codes->first_event */
 799 XExtDisplayInfo *__glXFindDisplay (Display *dpy);
 800
 801 extern __GLXDRIdrawable *
 802 GetGLXDRIDrawable(Display *dpy, GLXDrawable drawable, int *const scrn_num);
 803
 804 #endif
 805
 806 #endif /* !__GLX_client_h__ */