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/Xfuncproto.h>
  43 #include <X11/extensions/extutil.h>
  44 #define GLX_GLXEXT_PROTOTYPES
  45 #include <GL/glx.h>
  46 #include <GL/glxext.h>
  47 #include <string.h>
  48 #include <stdlib.h>
  49 #include <stdio.h>
  50 #ifdef _WIN32
  51 #include <stdint.h>
  52 #endif
  53 #include "GL/glxproto.h"
  54 #include "glxconfig.h"
  55 #include "glxhash.h"
  56 #if defined( HAVE_PTHREAD )
  57 # include <pthread.h>
  58 #endif
  59
  60 #include "glxextensions.h"
  61
  62 #define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0]))
  63
  64 #define GLX_MAJOR_VERSION 1       /* current version numbers */
  65 #define GLX_MINOR_VERSION 4
  66
  67 #define __GLX_MAX_TEXTURE_UNITS 32
  68
  69 struct glx_display;
  70 struct glx_context;
  71
  72 /************************************************************************/
  73
  74 #ifdef GLX_DIRECT_RENDERING
  75
  76 extern void DRI_glXUseXFont(struct glx_context *ctx,
  77                             Font font, int first, int count, int listbase);
  78
  79 #endif
  80
  81 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
  82
  83 /**
  84  * Display dependent methods.  This structure is initialized during the
  85  * \c driCreateDisplay call.
  86  */
  87 typedef struct __GLXDRIdisplayRec __GLXDRIdisplay;
  88 typedef struct __GLXDRIscreenRec __GLXDRIscreen;
  89 typedef struct __GLXDRIdrawableRec __GLXDRIdrawable;
  90
  91 struct __GLXDRIdisplayRec
  92 {
  93     /**
  94      * Method to destroy the private DRI display data.
  95      */
  96    void (*destroyDisplay) (__GLXDRIdisplay * display);
  97
  98    struct glx_screen *(*createScreen)(int screen, struct glx_display * priv);
  99 };
 100
 101 struct __GLXDRIscreenRec {
 102
 103    void (*destroyScreen)(struct glx_screen *psc);
 104
 105    struct glx_context *(*createContext)(struct glx_screen *psc,
 106                                         struct glx_config *config,
 107                                         struct glx_context *shareList,
 108                                         int renderType);
 109
 110    __GLXDRIdrawable *(*createDrawable)(struct glx_screen *psc,
 111                                        XID drawable,
 112                                        GLXDrawable glxDrawable,
 113                                        struct glx_config *config);
 114
 115    int64_t (*swapBuffers)(__GLXDRIdrawable *pdraw, int64_t target_msc,
 116                           int64_t divisor, int64_t remainder, Bool flush);
 117    void (*copySubBuffer)(__GLXDRIdrawable *pdraw,
 118                          int x, int y, int width, int height, Bool flush);
 119    int (*getDrawableMSC)(struct glx_screen *psc, __GLXDRIdrawable *pdraw,
 120                          int64_t *ust, int64_t *msc, int64_t *sbc);
 121    int (*waitForMSC)(__GLXDRIdrawable *pdraw, int64_t target_msc,
 122                      int64_t divisor, int64_t remainder, int64_t *ust,
 123                      int64_t *msc, int64_t *sbc);
 124    int (*waitForSBC)(__GLXDRIdrawable *pdraw, int64_t target_sbc, int64_t *ust,
 125                      int64_t *msc, int64_t *sbc);
 126    int (*setSwapInterval)(__GLXDRIdrawable *pdraw, int interval);
 127    int (*getSwapInterval)(__GLXDRIdrawable *pdraw);
 128 };
 129
 130 struct __GLXDRIdrawableRec
 131 {
 132    void (*destroyDrawable) (__GLXDRIdrawable * drawable);
 133
 134    XID xDrawable;
 135    XID drawable;
 136    struct glx_screen *psc;
 137    GLenum textureTarget;
 138    GLenum textureFormat;        /* EXT_texture_from_pixmap support */
 139    unsigned long eventMask;
 140    int refcount;
 141 };
 142
 143 /*
 144 ** Function to create and DRI display data and initialize the display
 145 ** dependent methods.
 146 */
 147 extern __GLXDRIdisplay *driswCreateDisplay(Display * dpy);
 148 extern __GLXDRIdisplay *driCreateDisplay(Display * dpy);
 149 extern __GLXDRIdisplay *dri2CreateDisplay(Display * dpy);
 150 extern void dri2InvalidateBuffers(Display *dpy, XID drawable);
 151 extern unsigned dri2GetSwapEventType(Display *dpy, XID drawable);
 152
 153
 154 /*
 155 ** Functions to obtain driver configuration information from a direct
 156 ** rendering client application
 157 */
 158 extern const char *glXGetScreenDriver(Display * dpy, int scrNum);
 159
 160 extern const char *glXGetDriverConfig(const char *driverName);
 161
 162 #endif
 163
 164 /************************************************************************/
 165
 166 #define __GL_CLIENT_ATTRIB_STACK_DEPTH 16
 167
 168 typedef struct __GLXpixelStoreModeRec
 169 {
 170    GLboolean swapEndian;
 171    GLboolean lsbFirst;
 172    GLuint rowLength;
 173    GLuint imageHeight;
 174    GLuint imageDepth;
 175    GLuint skipRows;
 176    GLuint skipPixels;
 177    GLuint skipImages;
 178    GLuint alignment;
 179 } __GLXpixelStoreMode;
 180
 181
 182 typedef struct __GLXattributeRec
 183 {
 184    GLuint mask;
 185
 186     /**
 187      * Pixel storage state.  Most of the pixel store mode state is kept
 188      * here and used by the client code to manage the packing and
 189      * unpacking of data sent to/received from the server.
 190      */
 191    __GLXpixelStoreMode storePack, storeUnpack;
 192
 193     /**
 194      * Is EXT_vertex_array / GL 1.1 DrawArrays protocol specifically
 195      * disabled?
 196      */
 197    GLboolean NoDrawArraysProtocol;
 198
 199     /**
 200      * Vertex Array storage state.  The vertex array component
 201      * state is stored here and is used to manage the packing of
 202      * DrawArrays data sent to the server.
 203      */
 204    struct array_state_vector *array_state;
 205 } __GLXattribute;
 206
 207 typedef struct __GLXattributeMachineRec
 208 {
 209    __GLXattribute *stack[__GL_CLIENT_ATTRIB_STACK_DEPTH];
 210    __GLXattribute **stackPointer;
 211 } __GLXattributeMachine;
 212
 213 struct glx_context_vtable {
 214    void (*destroy)(struct glx_context *ctx);
 215    int (*bind)(struct glx_context *context, struct glx_context *old,
 216                GLXDrawable draw, GLXDrawable read);
 217    void (*unbind)(struct glx_context *context, struct glx_context *new_ctx);
 218    void (*wait_gl)(struct glx_context *ctx);
 219    void (*wait_x)(struct glx_context *ctx);
 220    void (*use_x_font)(struct glx_context *ctx,
 221                       Font font, int first, int count, int listBase);
 222    void (*bind_tex_image)(Display * dpy,
 223                           GLXDrawable drawable,
 224                           int buffer, const int *attrib_list);
 225    void (*release_tex_image)(Display * dpy, GLXDrawable drawable, int buffer);
 226    void * (*get_proc_address)(const char *symbol);
 227 };
 228
 229 /**
 230  * GLX state that needs to be kept on the client.  One of these records
 231  * exist for each context that has been made current by this client.
 232  */
 233 struct glx_context
 234 {
 235     /**
 236      * \name Drawing command buffer.
 237      *
 238      * Drawing commands are packed into this buffer before being sent as a
 239      * single GLX protocol request.  The buffer is sent when it overflows or
 240      * is flushed by \c __glXFlushRenderBuffer.  \c pc is the next location
 241      * in the buffer to be filled.  \c limit is described above in the buffer
 242      * slop discussion.
 243      *
 244      * Commands that require large amounts of data to be transfered will
 245      * also use this buffer to hold a header that describes the large
 246      * command.
 247      *
 248      * These must be the first 6 fields since they are static initialized
 249      * in the dummy context in glxext.c
 250      */
 251    /*@{ */
 252    GLubyte *buf;
 253    GLubyte *pc;
 254    GLubyte *limit;
 255    GLubyte *bufEnd;
 256    GLint bufSize;
 257    /*@} */
 258
 259    const struct glx_context_vtable *vtable;
 260
 261     /**
 262      * The XID of this rendering context.  When the context is created a
 263      * new XID is allocated.  This is set to None when the context is
 264      * destroyed but is still current to some thread. In this case the
 265      * context will be freed on next MakeCurrent.
 266      */
 267    XID xid;
 268
 269     /**
 270      * The XID of the \c shareList context.
 271      */
 272    XID share_xid;
 273
 274     /**
 275      * Screen number.
 276      */
 277    GLint screen;
 278    struct glx_screen *psc;
 279
 280     /**
 281      * \c GL_TRUE if the context was created with ImportContext, which
 282      * means the server-side context was created by another X client.
 283      */
 284    GLboolean imported;
 285
 286     /**
 287      * The context tag returned by MakeCurrent when this context is made
 288      * current. This tag is used to identify the context that a thread has
 289      * current so that proper server context management can be done.  It is
 290      * used for all context specific commands (i.e., \c Render, \c RenderLarge,
 291      * \c WaitX, \c WaitGL, \c UseXFont, and \c MakeCurrent (for the old
 292      * context)).
 293      */
 294    GLXContextTag currentContextTag;
 295
 296     /**
 297      * \name Rendering mode
 298      *
 299      * The rendering mode is kept on the client as well as the server.
 300      * When \c glRenderMode is called, the buffer associated with the
 301      * previous rendering mode (feedback or select) is filled.
 302      */
 303    /*@{ */
 304    GLenum renderMode;
 305    GLfloat *feedbackBuf;
 306    GLuint *selectBuf;
 307    /*@} */
 308
 309     /**
 310      * Fill newImage with the unpacked form of \c oldImage getting it
 311      * ready for transport to the server.
 312      */
 313    void (*fillImage) (struct glx_context *, GLint, GLint, GLint, GLint, GLenum,
 314                       GLenum, const GLvoid *, GLubyte *, GLubyte *);
 315
 316     /**
 317      * Client side attribs.
 318      */
 319    __GLXattributeMachine attributes;
 320
 321     /**
 322      * Client side error code.  This is set when client side gl API
 323      * routines need to set an error because of a bad enumerant or
 324      * running out of memory, etc.
 325      */
 326    GLenum error;
 327
 328     /**
 329      * Whether this context does direct rendering.
 330      */
 331    Bool isDirect;
 332
 333 #if defined(GLX_DIRECT_RENDERING) && defined(GLX_USE_APPLEGL)
 334    void *driContext;
 335 #endif
 336
 337     /**
 338      * \c dpy of current display for this context.  Will be \c NULL if not
 339      * current to any display, or if this is the "dummy context".
 340      */
 341    Display *currentDpy;
 342
 343     /**
 344      * The current drawable for this context.  Will be None if this
 345      * context is not current to any drawable.  currentReadable is below.
 346      */
 347    GLXDrawable currentDrawable;
 348
 349     /**
 350      * \name GL Constant Strings
 351      *
 352      * Constant strings that describe the server implementation
 353      * These pertain to GL attributes, not to be confused with
 354      * GLX versioning attributes.
 355      */
 356    /*@{ */
 357    GLubyte *vendor;
 358    GLubyte *renderer;
 359    GLubyte *version;
 360    GLubyte *extensions;
 361    /*@} */
 362
 363     /**
 364      * Maximum small render command size.  This is the smaller of 64k and
 365      * the size of the above buffer.
 366      */
 367    GLint maxSmallRenderCommandSize;
 368
 369     /**
 370      * Major opcode for the extension.  Copied here so a lookup isn't
 371      * needed.
 372      */
 373    GLint majorOpcode;
 374
 375     /**
 376      * Pointer to the config used to create this context.
 377      */
 378    struct glx_config *config;
 379
 380     /**
 381      * The current read-drawable for this context.  Will be None if this
 382      * context is not current to any drawable.
 383      *
 384      * \since Internal API version 20030606.
 385      */
 386    GLXDrawable currentReadable;
 387
 388    /**
 389     * Pointer to client-state data that is private to libGL.  This is only
 390     * used for indirect rendering contexts.
 391     *
 392     * No internal API version change was made for this change.  Client-side
 393     * drivers should NEVER use this data or even care that it exists.
 394     */
 395    void *client_state_private;
 396
 397    /**
 398     * Stored value for \c glXQueryContext attribute \c GLX_RENDER_TYPE.
 399     */
 400    int renderType;
 401
 402    /**
 403     * \name Raw server GL version
 404     *
 405     * True core GL version supported by the server.  This is the raw value
 406     * returned by the server, and it may not reflect what is actually
 407     * supported (or reported) by the client-side library.
 408     */
 409    /*@{ */
 410    int server_major;        /**< Major version number. */
 411    int server_minor;        /**< Minor version number. */
 412    /*@} */
 413
 414    /**
 415     * Number of threads we're currently current in.
 416     */
 417    unsigned long thread_refcount;
 418
 419    char gl_extension_bits[__GL_EXT_BYTES];
 420 };
 421
 422 extern Bool
 423 glx_context_init(struct glx_context *gc,
 424                  struct glx_screen *psc, struct glx_config *fbconfig);
 425
 426 #define __glXSetError(gc,code)  \
 427    if (!(gc)->error) {          \
 428       (gc)->error = code;       \
 429    }
 430
 431 extern void __glFreeAttributeState(struct glx_context *);
 432
 433 /************************************************************************/
 434
 435 /**
 436  * The size of the largest drawing command known to the implementation
 437  * that will use the GLXRender GLX command.  In this case it is
 438  * \c glPolygonStipple.
 439  */
 440 #define __GLX_MAX_SMALL_RENDER_CMD_SIZE 156
 441
 442 /**
 443  * To keep the implementation fast, the code uses a "limit" pointer
 444  * to determine when the drawing command buffer is too full to hold
 445  * another fixed size command.  This constant defines the amount of
 446  * space that must always be available in the drawing command buffer
 447  * at all times for the implementation to work.  It is important that
 448  * the number be just large enough, but not so large as to reduce the
 449  * efficacy of the buffer.  The "+32" is just to keep the code working
 450  * in case somebody counts wrong.
 451  */
 452 #define __GLX_BUFFER_LIMIT_SIZE (__GLX_MAX_SMALL_RENDER_CMD_SIZE + 32)
 453
 454 /**
 455  * This implementation uses a smaller threshold for switching
 456  * to the RenderLarge protocol than the protcol requires so that
 457  * large copies don't occur.
 458  */
 459 #define __GLX_RENDER_CMD_SIZE_LIMIT 4096
 460
 461 /**
 462  * One of these records exists per screen of the display.  It contains
 463  * a pointer to the config data for that screen (if the screen supports GL).
 464  */
 465 struct glx_screen_vtable {
 466    struct glx_context *(*create_context)(struct glx_screen *psc,
 467                                          struct glx_config *config,
 468                                          struct glx_context *shareList,
 469                                          int renderType);
 470
 471    struct glx_context *(*create_context_attribs)(struct glx_screen *psc,
 472                                                  struct glx_config *config,
 473                                                  struct glx_context *shareList,
 474                                                  unsigned num_attrib,
 475                                                  const uint32_t *attribs,
 476                                                  unsigned *error);
 477    int (*query_renderer_integer)(struct glx_screen *psc,
 478                                  int attribute,
 479                                  int *value);
 480    int (*query_renderer_string)(struct glx_screen *psc,
 481                                 int attribute,
 482                                 const char **value);
 483 };
 484
 485 struct glx_screen
 486 {
 487    const struct glx_screen_vtable *vtable;
 488
 489     /**
 490      * GLX extension string reported by the X-server.
 491      */
 492    const char *serverGLXexts;
 493
 494     /**
 495      * GLX extension string to be reported to applications.  This is the
 496      * set of extensions that the application can actually use.
 497      */
 498    char *effectiveGLXexts;
 499
 500    struct glx_display *display;
 501
 502    Display *dpy;
 503    int scr;
 504
 505 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
 506     /**
 507      * Per screen direct rendering interface functions and data.
 508      */
 509    __GLXDRIscreen *driScreen;
 510 #endif
 511
 512     /**
 513      * Linked list of glx visuals and  fbconfigs for this screen.
 514      */
 515    struct glx_config *visuals, *configs;
 516
 517     /**
 518      * Per-screen dynamic GLX extension tracking.  The \c direct_support
 519      * field only contains enough bits for 64 extensions.  Should libGL
 520      * ever need to track more than 64 GLX extensions, we can safely grow
 521      * this field.  The \c struct glx_screen structure is not used outside
 522      * libGL.
 523      */
 524    /*@{ */
 525    unsigned char direct_support[8];
 526    GLboolean ext_list_first_time;
 527    /*@} */
 528
 529 };
 530
 531 /**
 532  * Per display private data.  One of these records exists for each display
 533  * that is using the OpenGL (GLX) extension.
 534  */
 535 struct glx_display
 536 {
 537    /* The extension protocol codes */
 538    XExtCodes *codes;
 539    struct glx_display *next;
 540
 541     /**
 542      * Back pointer to the display
 543      */
 544    Display *dpy;
 545
 546     /**
 547      * The \c majorOpcode is common to all connections to the same server.
 548      * It is also copied into the context structure.
 549      */
 550    int majorOpcode;
 551
 552     /**
 553      * \name Server Version
 554      *
 555      * Major and minor version returned by the server during initialization.
 556      */
 557    /*@{ */
 558    int majorVersion, minorVersion;
 559    /*@} */
 560
 561     /**
 562      * \name Storage for the servers GLX vendor and versions strings.
 563      *
 564      * These are the same for all screens on this display. These fields will
 565      * be filled in on demand.
 566      */
 567    /*@{ */
 568    const char *serverGLXvendor;
 569    const char *serverGLXversion;
 570    /*@} */
 571
 572     /**
 573      * Configurations of visuals for all screens on this display.
 574      * Also, per screen data which now includes the server \c GLX_EXTENSION
 575      * string.
 576      */
 577    struct glx_screen **screens;
 578
 579    __glxHashTable *glXDrawHash;
 580
 581 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
 582    __glxHashTable *drawHash;
 583
 584     /**
 585      * Per display direct rendering interface functions and data.
 586      */
 587    __GLXDRIdisplay *driswDisplay;
 588    __GLXDRIdisplay *driDisplay;
 589    __GLXDRIdisplay *dri2Display;
 590 #endif
 591 };
 592
 593 struct glx_drawable {
 594    XID xDrawable;
 595    XID drawable;
 596
 597    uint32_t lastEventSbc;
 598    int64_t eventSbcWrap;
 599 };
 600
 601 extern int
 602 glx_screen_init(struct glx_screen *psc,
 603                 int screen, struct glx_display * priv);
 604 extern void
 605 glx_screen_cleanup(struct glx_screen *psc);
 606
 607 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
 608 extern __GLXDRIdrawable *
 609 dri2GetGlxDrawableFromXDrawableId(Display *dpy, XID id);
 610 #endif
 611
 612 extern GLubyte *__glXFlushRenderBuffer(struct glx_context *, GLubyte *);
 613
 614 extern void __glXSendLargeChunk(struct glx_context * gc, GLint requestNumber,
 615                                 GLint totalRequests,
 616                                 const GLvoid * data, GLint dataLen);
 617
 618 extern void __glXSendLargeCommand(struct glx_context *, const GLvoid *, GLint,
 619                                   const GLvoid *, GLint);
 620
 621 /* Initialize the GLX extension for dpy */
 622 extern struct glx_display *__glXInitialize(Display *);
 623
 624 extern void __glXPreferEGL(int state);
 625
 626 /************************************************************************/
 627
 628 extern int __glXDebug;
 629
 630 /* This is per-thread storage in an MT environment */
 631 #if defined( HAVE_PTHREAD )
 632
 633 extern void __glXSetCurrentContext(struct glx_context * c);
 634
 635 # if defined( GLX_USE_TLS )
 636
 637 extern __thread void *__glX_tls_Context
 638    __attribute__ ((tls_model("initial-exec")));
 639
 640 #  define __glXGetCurrentContext() __glX_tls_Context
 641
 642 # else
 643
 644 extern struct glx_context *__glXGetCurrentContext(void);
 645
 646 # endif /* defined( GLX_USE_TLS ) */
 647
 648 #else
 649
 650 extern struct glx_context *__glXcurrentContext;
 651 #define __glXGetCurrentContext() __glXcurrentContext
 652 #define __glXSetCurrentContext(gc) __glXcurrentContext = gc
 653
 654 #endif /* defined( HAVE_PTHREAD ) */
 655
 656 extern void __glXSetCurrentContextNull(void);
 657
 658
 659 /*
 660 ** Global lock for all threads in this address space using the GLX
 661 ** extension
 662 */
 663 #if defined( HAVE_PTHREAD )
 664 extern pthread_mutex_t __glXmutex;
 665 #define __glXLock()    pthread_mutex_lock(&__glXmutex)
 666 #define __glXUnlock()  pthread_mutex_unlock(&__glXmutex)
 667 #else
 668 #define __glXLock()
 669 #define __glXUnlock()
 670 #endif
 671
 672 /*
 673 ** Setup for a command.  Initialize the extension for dpy if necessary.
 674 */
 675 extern CARD8 __glXSetupForCommand(Display * dpy);
 676
 677 /************************************************************************/
 678
 679 /*
 680 ** Data conversion and packing support.
 681 */
 682
 683 extern const GLuint __glXDefaultPixelStore[9];
 684
 685 /* Send an image to the server using RenderLarge. */
 686 extern void __glXSendLargeImage(struct glx_context * gc, GLint compsize, GLint dim,
 687                                 GLint width, GLint height, GLint depth,
 688                                 GLenum format, GLenum type,
 689                                 const GLvoid * src, GLubyte * pc,
 690                                 GLubyte * modes);
 691
 692 /* Return the size, in bytes, of some pixel data */
 693 extern GLint __glImageSize(GLint, GLint, GLint, GLenum, GLenum, GLenum);
 694
 695 /* Return the number of elements per group of a specified format*/
 696 extern GLint __glElementsPerGroup(GLenum format, GLenum type);
 697
 698 /* Return the number of bytes per element, based on the element type (other
 699 ** than GL_BITMAP).
 700 */
 701 extern GLint __glBytesPerElement(GLenum type);
 702
 703 /*
 704 ** Fill the transport buffer with the data from the users buffer,
 705 ** applying some of the pixel store modes (unpack modes) to the data
 706 ** first.  As a side effect of this call, the "modes" field is
 707 ** updated to contain the modes needed by the server to decode the
 708 ** sent data.
 709 */
 710 extern void __glFillImage(struct glx_context *, GLint, GLint, GLint, GLint, GLenum,
 711                           GLenum, const GLvoid *, GLubyte *, GLubyte *);
 712
 713 /* Copy map data with a stride into a packed buffer */
 714 extern void __glFillMap1f(GLint, GLint, GLint, const GLfloat *, GLubyte *);
 715 extern void __glFillMap1d(GLint, GLint, GLint, const GLdouble *, GLubyte *);
 716 extern void __glFillMap2f(GLint, GLint, GLint, GLint, GLint,
 717                           const GLfloat *, GLfloat *);
 718 extern void __glFillMap2d(GLint, GLint, GLint, GLint, GLint,
 719                           const GLdouble *, GLdouble *);
 720
 721 /*
 722 ** Empty an image out of the reply buffer into the clients memory applying
 723 ** the pack modes to pack back into the clients requested format.
 724 */
 725 extern void __glEmptyImage(struct glx_context *, GLint, GLint, GLint, GLint, GLenum,
 726                            GLenum, const GLubyte *, GLvoid *);
 727
 728
 729 /*
 730 ** Allocate and Initialize Vertex Array client state, and free.
 731 */
 732 extern void __glXInitVertexArrayState(struct glx_context *);
 733 extern void __glXFreeVertexArrayState(struct glx_context *);
 734
 735 /*
 736 ** Inform the Server of the major and minor numbers and of the client
 737 ** libraries extension string.
 738 */
 739 extern void __glXClientInfo(Display * dpy, int opcode);
 740
 741 _X_HIDDEN void
 742 __glX_send_client_info(struct glx_display *glx_dpy);
 743
 744 /************************************************************************/
 745
 746 /*
 747 ** Declarations that should be in Xlib
 748 */
 749 #ifdef __GL_USE_OUR_PROTOTYPES
 750 extern void _XFlush(Display *);
 751 extern Status _XReply(Display *, xReply *, int, Bool);
 752 extern void _XRead(Display *, void *, long);
 753 extern void _XSend(Display *, const void *, long);
 754 #endif
 755
 756
 757 extern void __glXInitializeVisualConfigFromTags(struct glx_config * config,
 758                                                 int count, const INT32 * bp,
 759                                                 Bool tagged_only,
 760                                                 Bool fbconfig_style_tags);
 761
 762 extern char *__glXQueryServerString(Display * dpy, int opcode,
 763                                     CARD32 screen, CARD32 name);
 764 extern char *__glXGetString(Display * dpy, int opcode,
 765                             CARD32 screen, CARD32 name);
 766
 767 extern char *__glXstrdup(const char *str);
 768
 769
 770 extern const char __glXGLClientVersion[];
 771 extern const char __glXGLClientExtensions[];
 772
 773 /* Get the unadjusted system time */
 774 extern int __glXGetUST(int64_t * ust);
 775
 776 extern GLboolean __glXGetMscRateOML(Display * dpy, GLXDrawable drawable,
 777                                     int32_t * numerator,
 778                                     int32_t * denominator);
 779
 780 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
 781 extern GLboolean
 782 __glxGetMscRate(__GLXDRIdrawable *glxDraw,
 783                 int32_t * numerator, int32_t * denominator);
 784
 785 /* So that dri2.c:DRI2WireToEvent() can access
 786  * glx_info->codes->first_event */
 787 XExtDisplayInfo *__glXFindDisplay (Display *dpy);
 788
 789 extern void
 790 GarbageCollectDRIDrawables(struct glx_screen *psc);
 791
 792 extern __GLXDRIdrawable *
 793 GetGLXDRIDrawable(Display *dpy, GLXDrawable drawable);
 794 #endif
 795
 796 extern struct glx_screen *GetGLXScreenConfigs(Display * dpy, int scrn);
 797
 798 #ifdef GLX_USE_APPLEGL
 799 extern struct glx_screen *
 800 applegl_create_screen(int screen, struct glx_display * priv);
 801
 802 extern struct glx_context *
 803 applegl_create_context(struct glx_screen *psc,
 804                         struct glx_config *mode,
 805                         struct glx_context *shareList, int renderType);
 806
 807 extern int
 808 applegl_create_display(struct glx_display *display);
 809 #endif
 810
 811 extern Bool validate_renderType_against_config(const struct glx_config *config,
 812                                                int renderType);
 813
 814
 815 extern struct glx_drawable *GetGLXDrawable(Display *dpy, GLXDrawable drawable);
 816 extern int InitGLXDrawable(Display *dpy, struct glx_drawable *glxDraw,
 817                            XID xDrawable, GLXDrawable drawable);
 818 extern void DestroyGLXDrawable(Display *dpy, GLXDrawable drawable);
 819
 820 extern struct glx_context dummyContext;
 821
 822 extern struct glx_screen *
 823 indirect_create_screen(int screen, struct glx_display * priv);
 824 extern struct glx_context *
 825 indirect_create_context(struct glx_screen *psc,
 826                         struct glx_config *mode,
 827                         struct glx_context *shareList, int renderType);
 828 extern struct glx_context *
 829 indirect_create_context_attribs(struct glx_screen *base,
 830                                 struct glx_config *config_base,
 831                                 struct glx_context *shareList,
 832                                 unsigned num_attribs,
 833                                 const uint32_t *attribs,
 834                                 unsigned *error);
 835
 836 #endif /* !__GLX_client_h__ */