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(GLXContext CC,
  99                             Font font, int first, int count, int listbase);
 100
 101 #endif
 102
 103 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
 104
 105 /**
 106  * Display dependent methods.  This structure is initialized during the
 107  * \c driCreateDisplay call.
 108  */
 109 typedef struct __GLXDRIdisplayRec __GLXDRIdisplay;
 110 typedef struct __GLXDRIscreenRec __GLXDRIscreen;
 111 typedef struct __GLXDRIdrawableRec __GLXDRIdrawable;
 112 typedef struct __GLXDRIcontextRec __GLXDRIcontext;
 113
 114 #include "glxextensions.h"
 115
 116 struct __GLXDRIdisplayRec
 117 {
 118     /**
 119      * Method to destroy the private DRI display data.
 120      */
 121    void (*destroyDisplay) (__GLXDRIdisplay * display);
 122
 123    __GLXscreenConfigs *(*createScreen)(int screen, __GLXdisplayPrivate * priv);
 124 };
 125
 126 struct __GLXDRIscreenRec {
 127
 128    void (*destroyScreen)(__GLXscreenConfigs *psc);
 129
 130    __GLXcontext *(*createContext)(__GLXscreenConfigs *psc,
 131                                   const __GLcontextModes *mode,
 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    int (*getDrawableMSC)(__GLXscreenConfigs *psc, __GLXDRIdrawable *pdraw,
 144                          int64_t *ust, int64_t *msc, int64_t *sbc);
 145    int (*waitForMSC)(__GLXDRIdrawable *pdraw, int64_t target_msc,
 146                      int64_t divisor, int64_t remainder, int64_t *ust,
 147                      int64_t *msc, int64_t *sbc);
 148    int (*waitForSBC)(__GLXDRIdrawable *pdraw, int64_t target_sbc, int64_t *ust,
 149                      int64_t *msc, int64_t *sbc);
 150    int (*setSwapInterval)(__GLXDRIdrawable *pdraw, int interval);
 151    int (*getSwapInterval)(__GLXDRIdrawable *pdraw);
 152 };
 153
 154 struct __GLXDRIcontextRec
 155 {
 156    Bool(*bindContext) (__GLXcontext *context, __GLXDRIdrawable *pdraw,
 157                        __GLXDRIdrawable *pread);
 158    void (*unbindContext) (__GLXcontext *context);
 159 };
 160
 161 struct __GLXDRIdrawableRec
 162 {
 163    void (*destroyDrawable) (__GLXDRIdrawable * drawable);
 164
 165    XID xDrawable;
 166    XID drawable;
 167    __GLXscreenConfigs *psc;
 168    GLenum textureTarget;
 169    GLenum textureFormat;        /* EXT_texture_from_pixmap support */
 170    unsigned long eventMask;
 171 };
 172
 173 /*
 174 ** Function to create and DRI display data and initialize the display
 175 ** dependent methods.
 176 */
 177 extern __GLXDRIdisplay *driswCreateDisplay(Display * dpy);
 178 extern __GLXDRIdisplay *driCreateDisplay(Display * dpy);
 179 extern __GLXDRIdisplay *dri2CreateDisplay(Display * dpy);
 180 extern void dri2InvalidateBuffers(Display *dpy, XID drawable);
 181
 182
 183 /*
 184 ** Functions to obtain driver configuration information from a direct
 185 ** rendering client application
 186 */
 187 extern const char *glXGetScreenDriver(Display * dpy, int scrNum);
 188
 189 extern const char *glXGetDriverConfig(const char *driverName);
 190
 191 #endif
 192
 193 /************************************************************************/
 194
 195 #define __GL_CLIENT_ATTRIB_STACK_DEPTH 16
 196
 197 typedef struct __GLXpixelStoreModeRec
 198 {
 199    GLboolean swapEndian;
 200    GLboolean lsbFirst;
 201    GLuint rowLength;
 202    GLuint imageHeight;
 203    GLuint imageDepth;
 204    GLuint skipRows;
 205    GLuint skipPixels;
 206    GLuint skipImages;
 207    GLuint alignment;
 208 } __GLXpixelStoreMode;
 209
 210
 211 typedef struct __GLXattributeRec
 212 {
 213    GLuint mask;
 214
 215     /**
 216      * Pixel storage state.  Most of the pixel store mode state is kept
 217      * here and used by the client code to manage the packing and
 218      * unpacking of data sent to/received from the server.
 219      */
 220    __GLXpixelStoreMode storePack, storeUnpack;
 221
 222     /**
 223      * Is EXT_vertex_array / GL 1.1 DrawArrays protocol specifically
 224      * disabled?
 225      */
 226    GLboolean NoDrawArraysProtocol;
 227
 228     /**
 229      * Vertex Array storage state.  The vertex array component
 230      * state is stored here and is used to manage the packing of
 231      * DrawArrays data sent to the server.
 232      */
 233    struct array_state_vector *array_state;
 234 } __GLXattribute;
 235
 236 typedef struct __GLXattributeMachineRec
 237 {
 238    __GLXattribute *stack[__GL_CLIENT_ATTRIB_STACK_DEPTH];
 239    __GLXattribute **stackPointer;
 240 } __GLXattributeMachine;
 241
 242 struct glx_context_vtable {
 243    void (*destroy)(__GLXcontext *ctx);
 244    void (*wait_gl)(__GLXcontext *ctx);
 245    void (*wait_x)(__GLXcontext *ctx);
 246    void (*use_x_font)(__GLXcontext *ctx,
 247                       Font font, int first, int count, int listBase);
 248    void (*bind_tex_image)(Display * dpy,
 249                           GLXDrawable drawable,
 250                           int buffer, const int *attrib_list);
 251    void (*release_tex_image)(Display * dpy, GLXDrawable drawable, int buffer);
 252
 253 };
 254
 255 extern void
 256 glx_send_destroy_context(Display *dpy, XID xid);
 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      * Maximum small render command size.  This is the smaller of 64k and
 396      * the size of the above buffer.
 397      */
 398    GLint maxSmallRenderCommandSize;
 399
 400     /**
 401      * Major opcode for the extension.  Copied here so a lookup isn't
 402      * needed.
 403      */
 404    GLint majorOpcode;
 405
 406     /**
 407      * Pointer to the mode used to create this context.
 408      */
 409    const __GLcontextModes *mode;
 410
 411 #ifdef GLX_DIRECT_RENDERING
 412 #ifdef GLX_USE_APPLEGL
 413    void *driContext;
 414    Bool do_destroy;
 415 #else
 416    __GLXDRIcontext *driContext;
 417 #endif
 418 #endif
 419
 420     /**
 421      * The current read-drawable for this context.  Will be None if this
 422      * context is not current to any drawable.
 423      *
 424      * \since Internal API version 20030606.
 425      */
 426    GLXDrawable currentReadable;
 427
 428    /**
 429     * Pointer to client-state data that is private to libGL.  This is only
 430     * used for indirect rendering contexts.
 431     *
 432     * No internal API version change was made for this change.  Client-side
 433     * drivers should NEVER use this data or even care that it exists.
 434     */
 435    void *client_state_private;
 436
 437    /**
 438     * Stored value for \c glXQueryContext attribute \c GLX_RENDER_TYPE.
 439     */
 440    int renderType;
 441
 442    /**
 443     * \name Raw server GL version
 444     *
 445     * True core GL version supported by the server.  This is the raw value
 446     * returned by the server, and it may not reflect what is actually
 447     * supported (or reported) by the client-side library.
 448     */
 449    /*@{ */
 450    int server_major;        /**< Major version number. */
 451    int server_minor;        /**< Minor version number. */
 452    /*@} */
 453
 454    /**
 455     * Thread ID we're currently current in. Zero if none.
 456     */
 457    unsigned long thread_id;
 458
 459    char gl_extension_bits[__GL_EXT_BYTES];
 460
 461    const struct glx_context_vtable *vtable;
 462 };
 463
 464 extern Bool
 465 glx_context_init(__GLXcontext *gc,
 466                  __GLXscreenConfigs *psc, const __GLcontextModes *fbconfig);
 467
 468 #define __glXSetError(gc,code)  \
 469    if (!(gc)->error) {          \
 470       (gc)->error = code;       \
 471    }
 472
 473 extern void __glFreeAttributeState(__GLXcontext *);
 474
 475 /************************************************************************/
 476
 477 /**
 478  * The size of the largest drawing command known to the implementation
 479  * that will use the GLXRender GLX command.  In this case it is
 480  * \c glPolygonStipple.
 481  */
 482 #define __GLX_MAX_SMALL_RENDER_CMD_SIZE 156
 483
 484 /**
 485  * To keep the implementation fast, the code uses a "limit" pointer
 486  * to determine when the drawing command buffer is too full to hold
 487  * another fixed size command.  This constant defines the amount of
 488  * space that must always be available in the drawing command buffer
 489  * at all times for the implementation to work.  It is important that
 490  * the number be just large enough, but not so large as to reduce the
 491  * efficacy of the buffer.  The "+32" is just to keep the code working
 492  * in case somebody counts wrong.
 493  */
 494 #define __GLX_BUFFER_LIMIT_SIZE (__GLX_MAX_SMALL_RENDER_CMD_SIZE + 32)
 495
 496 /**
 497  * This implementation uses a smaller threshold for switching
 498  * to the RenderLarge protocol than the protcol requires so that
 499  * large copies don't occur.
 500  */
 501 #define __GLX_RENDER_CMD_SIZE_LIMIT 4096
 502
 503 /**
 504  * One of these records exists per screen of the display.  It contains
 505  * a pointer to the config data for that screen (if the screen supports GL).
 506  */
 507 struct glx_screen_vtable {
 508    __GLXcontext *(*create_context)(__GLXscreenConfigs *psc,
 509                                    const __GLcontextModes *mode,
 510                                    GLXContext shareList, int renderType);
 511 };
 512
 513 struct __GLXscreenConfigsRec
 514 {
 515    const struct glx_screen_vtable *vtable;
 516
 517     /**
 518      * GLX extension string reported by the X-server.
 519      */
 520    const char *serverGLXexts;
 521
 522     /**
 523      * GLX extension string to be reported to applications.  This is the
 524      * set of extensions that the application can actually use.
 525      */
 526    char *effectiveGLXexts;
 527
 528    __GLXdisplayPrivate *display;
 529
 530 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
 531     /**
 532      * Per screen direct rendering interface functions and data.
 533      */
 534    Display *dpy;
 535    int scr;
 536
 537    __GLXDRIscreen *driScreen;
 538 #endif
 539
 540     /**
 541      * Linked list of glx visuals and  fbconfigs for this screen.
 542      */
 543    __GLcontextModes *visuals, *configs;
 544
 545     /**
 546      * Per-screen dynamic GLX extension tracking.  The \c direct_support
 547      * field only contains enough bits for 64 extensions.  Should libGL
 548      * ever need to track more than 64 GLX extensions, we can safely grow
 549      * this field.  The \c __GLXscreenConfigs structure is not used outside
 550      * libGL.
 551      */
 552    /*@{ */
 553    unsigned char direct_support[8];
 554    GLboolean ext_list_first_time;
 555    /*@} */
 556
 557 };
 558
 559 /**
 560  * Per display private data.  One of these records exists for each display
 561  * that is using the OpenGL (GLX) extension.
 562  */
 563 struct __GLXdisplayPrivateRec
 564 {
 565    /* The extension protocol codes */
 566    XExtCodes *codes;
 567    struct __GLXdisplayPrivateRec *next;
 568
 569     /**
 570      * Back pointer to the display
 571      */
 572    Display *dpy;
 573
 574     /**
 575      * The \c majorOpcode is common to all connections to the same server.
 576      * It is also copied into the context structure.
 577      */
 578    int majorOpcode;
 579
 580     /**
 581      * \name Server Version
 582      *
 583      * Major and minor version returned by the server during initialization.
 584      */
 585    /*@{ */
 586    int majorVersion, minorVersion;
 587    /*@} */
 588
 589     /**
 590      * \name Storage for the servers GLX vendor and versions strings.
 591      *
 592      * These are the same for all screens on this display. These fields will
 593      * be filled in on demand.
 594      */
 595    /*@{ */
 596    const char *serverGLXvendor;
 597    const char *serverGLXversion;
 598    /*@} */
 599
 600     /**
 601      * Configurations of visuals for all screens on this display.
 602      * Also, per screen data which now includes the server \c GLX_EXTENSION
 603      * string.
 604      */
 605    __GLXscreenConfigs **screenConfigs;
 606
 607 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
 608    __glxHashTable *drawHash;
 609
 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 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
 624 extern __GLXDRIdrawable *
 625 dri2GetGlxDrawableFromXDrawableId(Display *dpy, XID id);
 626 #endif
 627
 628 extern GLubyte *__glXFlushRenderBuffer(__GLXcontext *, GLubyte *);
 629
 630 extern void __glXSendLargeChunk(__GLXcontext * gc, GLint requestNumber,
 631                                 GLint totalRequests,
 632                                 const GLvoid * data, GLint dataLen);
 633
 634 extern void __glXSendLargeCommand(__GLXcontext *, const GLvoid *, GLint,
 635                                   const GLvoid *, GLint);
 636
 637 /* Initialize the GLX extension for dpy */
 638 extern __GLXdisplayPrivate *__glXInitialize(Display *);
 639
 640 extern void __glXPreferEGL(int state);
 641
 642 /************************************************************************/
 643
 644 extern int __glXDebug;
 645
 646 /* This is per-thread storage in an MT environment */
 647 #if defined( PTHREADS )
 648
 649 extern void __glXSetCurrentContext(__GLXcontext * c);
 650
 651 # if defined( GLX_USE_TLS )
 652
 653 extern __thread void *__glX_tls_Context
 654    __attribute__ ((tls_model("initial-exec")));
 655
 656 #  define __glXGetCurrentContext() __glX_tls_Context
 657
 658 # else
 659
 660 extern __GLXcontext *__glXGetCurrentContext(void);
 661
 662 # endif /* defined( GLX_USE_TLS ) */
 663
 664 #else
 665
 666 extern __GLXcontext *__glXcurrentContext;
 667 #define __glXGetCurrentContext() __glXcurrentContext
 668 #define __glXSetCurrentContext(gc) __glXcurrentContext = gc
 669
 670 #endif /* defined( PTHREADS ) */
 671
 672 extern void __glXSetCurrentContextNull(void);
 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 extern GLboolean
 795 __glxGetMscRate(__GLXDRIdrawable *glxDraw,
 796                 int32_t * numerator, int32_t * denominator);
 797
 798 /* So that dri2.c:DRI2WireToEvent() can access
 799  * glx_info->codes->first_event */
 800 XExtDisplayInfo *__glXFindDisplay (Display *dpy);
 801
 802 extern void
 803 GarbageCollectDRIDrawables(__GLXscreenConfigs *psc);
 804
 805 extern __GLXDRIdrawable *
 806 GetGLXDRIDrawable(Display *dpy, GLXDrawable drawable);
 807
 808 #endif
 809
 810 extern __GLXscreenConfigs *
 811 indirect_create_screen(int screen, __GLXdisplayPrivate * priv);
 812
 813 #endif /* !__GLX_client_h__ */