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 #include "util/macros.h"
  60
  61 #include "glxextensions.h"
  62
  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    int (*getBufferAge)(__GLXDRIdrawable *pdraw);
 129 };
 130
 131 struct __GLXDRIdrawableRec
 132 {
 133    void (*destroyDrawable) (__GLXDRIdrawable * drawable);
 134
 135    XID xDrawable;
 136    XID drawable;
 137    struct glx_screen *psc;
 138    GLenum textureTarget;
 139    GLenum textureFormat;        /* EXT_texture_from_pixmap support */
 140    unsigned long eventMask;
 141    int refcount;
 142 };
 143
 144 /*
 145 ** Function to create and DRI display data and initialize the display
 146 ** dependent methods.
 147 */
 148 extern __GLXDRIdisplay *driswCreateDisplay(Display * dpy);
 149 extern __GLXDRIdisplay *driCreateDisplay(Display * dpy);
 150 extern __GLXDRIdisplay *dri2CreateDisplay(Display * dpy);
 151 extern void dri2InvalidateBuffers(Display *dpy, XID drawable);
 152 extern unsigned dri2GetSwapEventType(Display *dpy, XID drawable);
 153
 154 extern __GLXDRIdisplay *dri3_create_display(Display * dpy);
 155
 156 /*
 157 ** Functions to obtain driver configuration information from a direct
 158 ** rendering client application
 159 */
 160 extern const char *glXGetScreenDriver(Display * dpy, int scrNum);
 161
 162 extern const char *glXGetDriverConfig(const char *driverName);
 163
 164 #endif
 165
 166 /************************************************************************/
 167
 168 #define __GL_CLIENT_ATTRIB_STACK_DEPTH 16
 169
 170 typedef struct __GLXpixelStoreModeRec
 171 {
 172    GLboolean swapEndian;
 173    GLboolean lsbFirst;
 174    GLuint rowLength;
 175    GLuint imageHeight;
 176    GLuint imageDepth;
 177    GLuint skipRows;
 178    GLuint skipPixels;
 179    GLuint skipImages;
 180    GLuint alignment;
 181 } __GLXpixelStoreMode;
 182
 183
 184 typedef struct __GLXattributeRec
 185 {
 186    GLuint mask;
 187
 188     /**
 189      * Pixel storage state.  Most of the pixel store mode state is kept
 190      * here and used by the client code to manage the packing and
 191      * unpacking of data sent to/received from the server.
 192      */
 193    __GLXpixelStoreMode storePack, storeUnpack;
 194
 195     /**
 196      * Is EXT_vertex_array / GL 1.1 DrawArrays protocol specifically
 197      * disabled?
 198      */
 199    GLboolean NoDrawArraysProtocol;
 200
 201     /**
 202      * Vertex Array storage state.  The vertex array component
 203      * state is stored here and is used to manage the packing of
 204      * DrawArrays data sent to the server.
 205      */
 206    struct array_state_vector *array_state;
 207 } __GLXattribute;
 208
 209 typedef struct __GLXattributeMachineRec
 210 {
 211    __GLXattribute *stack[__GL_CLIENT_ATTRIB_STACK_DEPTH];
 212    __GLXattribute **stackPointer;
 213 } __GLXattributeMachine;
 214
 215 struct glx_context_vtable {
 216    void (*destroy)(struct glx_context *ctx);
 217    int (*bind)(struct glx_context *context, struct glx_context *old,
 218                GLXDrawable draw, GLXDrawable read);
 219    void (*unbind)(struct glx_context *context, struct glx_context *new_ctx);
 220    void (*wait_gl)(struct glx_context *ctx);
 221    void (*wait_x)(struct glx_context *ctx);
 222    void (*use_x_font)(struct glx_context *ctx,
 223                       Font font, int first, int count, int listBase);
 224    void (*bind_tex_image)(Display * dpy,
 225                           GLXDrawable drawable,
 226                           int buffer, const int *attrib_list);
 227    void (*release_tex_image)(Display * dpy, GLXDrawable drawable, int buffer);
 228    void * (*get_proc_address)(const char *symbol);
 229 };
 230
 231 /**
 232  * GLX state that needs to be kept on the client.  One of these records
 233  * exist for each context that has been made current by this client.
 234  */
 235 struct glx_context
 236 {
 237     /**
 238      * \name Drawing command buffer.
 239      *
 240      * Drawing commands are packed into this buffer before being sent as a
 241      * single GLX protocol request.  The buffer is sent when it overflows or
 242      * is flushed by \c __glXFlushRenderBuffer.  \c pc is the next location
 243      * in the buffer to be filled.  \c limit is described above in the buffer
 244      * slop discussion.
 245      *
 246      * Commands that require large amounts of data to be transfered will
 247      * also use this buffer to hold a header that describes the large
 248      * command.
 249      *
 250      * These must be the first 6 fields since they are static initialized
 251      * in the dummy context in glxext.c
 252      */
 253    /*@{ */
 254    GLubyte *buf;
 255    GLubyte *pc;
 256    GLubyte *limit;
 257    GLubyte *bufEnd;
 258    GLint bufSize;
 259    /*@} */
 260
 261    const struct glx_context_vtable *vtable;
 262
 263     /**
 264      * The XID of this rendering context.  When the context is created a
 265      * new XID is allocated.  This is set to None when the context is
 266      * destroyed but is still current to some thread. In this case the
 267      * context will be freed on next MakeCurrent.
 268      */
 269    XID xid;
 270
 271     /**
 272      * The XID of the \c shareList context.
 273      */
 274    XID share_xid;
 275
 276     /**
 277      * Screen number.
 278      */
 279    GLint screen;
 280    struct glx_screen *psc;
 281
 282     /**
 283      * \c GL_TRUE if the context was created with ImportContext, which
 284      * means the server-side context was created by another X client.
 285      */
 286    GLboolean imported;
 287
 288     /**
 289      * The context tag returned by MakeCurrent when this context is made
 290      * current. This tag is used to identify the context that a thread has
 291      * current so that proper server context management can be done.  It is
 292      * used for all context specific commands (i.e., \c Render, \c RenderLarge,
 293      * \c WaitX, \c WaitGL, \c UseXFont, and \c MakeCurrent (for the old
 294      * context)).
 295      */
 296    GLXContextTag currentContextTag;
 297
 298     /**
 299      * \name Rendering mode
 300      *
 301      * The rendering mode is kept on the client as well as the server.
 302      * When \c glRenderMode is called, the buffer associated with the
 303      * previous rendering mode (feedback or select) is filled.
 304      */
 305    /*@{ */
 306    GLenum renderMode;
 307    GLfloat *feedbackBuf;
 308    GLuint *selectBuf;
 309    /*@} */
 310
 311     /**
 312      * Fill newImage with the unpacked form of \c oldImage getting it
 313      * ready for transport to the server.
 314      */
 315    void (*fillImage) (struct glx_context *, GLint, GLint, GLint, GLint, GLenum,
 316                       GLenum, const GLvoid *, GLubyte *, GLubyte *);
 317
 318     /**
 319      * Client side attribs.
 320      */
 321    __GLXattributeMachine attributes;
 322
 323     /**
 324      * Client side error code.  This is set when client side gl API
 325      * routines need to set an error because of a bad enumerant or
 326      * running out of memory, etc.
 327      */
 328    GLenum error;
 329
 330     /**
 331      * Whether this context does direct rendering.
 332      */
 333    Bool isDirect;
 334
 335 #if defined(GLX_DIRECT_RENDERING) && defined(GLX_USE_APPLEGL)
 336    void *driContext;
 337 #endif
 338
 339     /**
 340      * \c dpy of current display for this context.  Will be \c NULL if not
 341      * current to any display, or if this is the "dummy context".
 342      */
 343    Display *currentDpy;
 344
 345     /**
 346      * The current drawable for this context.  Will be None if this
 347      * context is not current to any drawable.  currentReadable is below.
 348      */
 349    GLXDrawable currentDrawable;
 350
 351     /**
 352      * \name GL Constant Strings
 353      *
 354      * Constant strings that describe the server implementation
 355      * These pertain to GL attributes, not to be confused with
 356      * GLX versioning attributes.
 357      */
 358    /*@{ */
 359    GLubyte *vendor;
 360    GLubyte *renderer;
 361    GLubyte *version;
 362    GLubyte *extensions;
 363    /*@} */
 364
 365     /**
 366      * Maximum small render command size.  This is the smaller of 64k and
 367      * the size of the above buffer.
 368      */
 369    GLint maxSmallRenderCommandSize;
 370
 371     /**
 372      * Major opcode for the extension.  Copied here so a lookup isn't
 373      * needed.
 374      */
 375    GLint majorOpcode;
 376
 377     /**
 378      * Pointer to the config used to create this context.
 379      */
 380    struct glx_config *config;
 381
 382     /**
 383      * The current read-drawable for this context.  Will be None if this
 384      * context is not current to any drawable.
 385      *
 386      * \since Internal API version 20030606.
 387      */
 388    GLXDrawable currentReadable;
 389
 390    /**
 391     * Pointer to client-state data that is private to libGL.  This is only
 392     * used for indirect rendering contexts.
 393     *
 394     * No internal API version change was made for this change.  Client-side
 395     * drivers should NEVER use this data or even care that it exists.
 396     */
 397    void *client_state_private;
 398
 399    /**
 400     * Stored value for \c glXQueryContext attribute \c GLX_RENDER_TYPE.
 401     */
 402    int renderType;
 403
 404    /**
 405     * \name Raw server GL version
 406     *
 407     * True core GL version supported by the server.  This is the raw value
 408     * returned by the server, and it may not reflect what is actually
 409     * supported (or reported) by the client-side library.
 410     */
 411    /*@{ */
 412    int server_major;        /**< Major version number. */
 413    int server_minor;        /**< Minor version number. */
 414    /*@} */
 415
 416    /**
 417     * Number of threads we're currently current in.
 418     */
 419    unsigned long thread_refcount;
 420
 421    char gl_extension_bits[__GL_EXT_BYTES];
 422 };
 423
 424 extern Bool
 425 glx_context_init(struct glx_context *gc,
 426                  struct glx_screen *psc, struct glx_config *fbconfig);
 427
 428 #define __glXSetError(gc,code)  \
 429    if (!(gc)->error) {          \
 430       (gc)->error = code;       \
 431    }
 432
 433 extern void __glFreeAttributeState(struct glx_context *);
 434
 435 /************************************************************************/
 436
 437 /**
 438  * The size of the largest drawing command known to the implementation
 439  * that will use the GLXRender GLX command.  In this case it is
 440  * \c glPolygonStipple.
 441  */
 442 #define __GLX_MAX_SMALL_RENDER_CMD_SIZE 156
 443
 444 /**
 445  * To keep the implementation fast, the code uses a "limit" pointer
 446  * to determine when the drawing command buffer is too full to hold
 447  * another fixed size command.  This constant defines the amount of
 448  * space that must always be available in the drawing command buffer
 449  * at all times for the implementation to work.  It is important that
 450  * the number be just large enough, but not so large as to reduce the
 451  * efficacy of the buffer.  The "+32" is just to keep the code working
 452  * in case somebody counts wrong.
 453  */
 454 #define __GLX_BUFFER_LIMIT_SIZE (__GLX_MAX_SMALL_RENDER_CMD_SIZE + 32)
 455
 456 /**
 457  * This implementation uses a smaller threshold for switching
 458  * to the RenderLarge protocol than the protcol requires so that
 459  * large copies don't occur.
 460  */
 461 #define __GLX_RENDER_CMD_SIZE_LIMIT 4096
 462
 463 /**
 464  * One of these records exists per screen of the display.  It contains
 465  * a pointer to the config data for that screen (if the screen supports GL).
 466  */
 467 struct glx_screen_vtable {
 468    struct glx_context *(*create_context)(struct glx_screen *psc,
 469                                          struct glx_config *config,
 470                                          struct glx_context *shareList,
 471                                          int renderType);
 472
 473    struct glx_context *(*create_context_attribs)(struct glx_screen *psc,
 474                                                  struct glx_config *config,
 475                                                  struct glx_context *shareList,
 476                                                  unsigned num_attrib,
 477                                                  const uint32_t *attribs,
 478                                                  unsigned *error);
 479    int (*query_renderer_integer)(struct glx_screen *psc,
 480                                  int attribute,
 481                                  unsigned int *value);
 482    int (*query_renderer_string)(struct glx_screen *psc,
 483                                 int attribute,
 484                                 const char **value);
 485 };
 486
 487 struct glx_screen
 488 {
 489    const struct glx_screen_vtable *vtable;
 490
 491     /**
 492      * GLX extension string reported by the X-server.
 493      */
 494    const char *serverGLXexts;
 495
 496     /**
 497      * GLX extension string to be reported to applications.  This is the
 498      * set of extensions that the application can actually use.
 499      */
 500    char *effectiveGLXexts;
 501
 502    struct glx_display *display;
 503
 504    Display *dpy;
 505    int scr;
 506
 507 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
 508     /**
 509      * Per screen direct rendering interface functions and data.
 510      */
 511    __GLXDRIscreen *driScreen;
 512 #endif
 513
 514     /**
 515      * Linked list of glx visuals and  fbconfigs for this screen.
 516      */
 517    struct glx_config *visuals, *configs;
 518
 519     /**
 520      * Per-screen dynamic GLX extension tracking.  The \c direct_support
 521      * field only contains enough bits for 64 extensions.  Should libGL
 522      * ever need to track more than 64 GLX extensions, we can safely grow
 523      * this field.  The \c struct glx_screen structure is not used outside
 524      * libGL.
 525      */
 526    /*@{ */
 527    unsigned char direct_support[8];
 528    GLboolean ext_list_first_time;
 529    /*@} */
 530
 531 };
 532
 533 /**
 534  * Per display private data.  One of these records exists for each display
 535  * that is using the OpenGL (GLX) extension.
 536  */
 537 struct glx_display
 538 {
 539    /* The extension protocol codes */
 540    XExtCodes *codes;
 541    struct glx_display *next;
 542
 543     /**
 544      * Back pointer to the display
 545      */
 546    Display *dpy;
 547
 548     /**
 549      * The \c majorOpcode is common to all connections to the same server.
 550      * It is also copied into the context structure.
 551      */
 552    int majorOpcode;
 553
 554     /**
 555      * \name Server Version
 556      *
 557      * Major and minor version returned by the server during initialization.
 558      */
 559    /*@{ */
 560    int majorVersion, minorVersion;
 561    /*@} */
 562
 563     /**
 564      * \name Storage for the servers GLX vendor and versions strings.
 565      *
 566      * These are the same for all screens on this display. These fields will
 567      * be filled in on demand.
 568      */
 569    /*@{ */
 570    const char *serverGLXvendor;
 571    const char *serverGLXversion;
 572    /*@} */
 573
 574     /**
 575      * Configurations of visuals for all screens on this display.
 576      * Also, per screen data which now includes the server \c GLX_EXTENSION
 577      * string.
 578      */
 579    struct glx_screen **screens;
 580
 581    __glxHashTable *glXDrawHash;
 582
 583 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
 584    __glxHashTable *drawHash;
 585
 586     /**
 587      * Per display direct rendering interface functions and data.
 588      */
 589    __GLXDRIdisplay *driswDisplay;
 590    __GLXDRIdisplay *driDisplay;
 591    __GLXDRIdisplay *dri2Display;
 592    __GLXDRIdisplay *dri3Display;
 593 #endif
 594 };
 595
 596 struct glx_drawable {
 597    XID xDrawable;
 598    XID drawable;
 599
 600    uint32_t lastEventSbc;
 601    int64_t eventSbcWrap;
 602 };
 603
 604 extern int
 605 glx_screen_init(struct glx_screen *psc,
 606                 int screen, struct glx_display * priv);
 607 extern void
 608 glx_screen_cleanup(struct glx_screen *psc);
 609
 610 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
 611 extern __GLXDRIdrawable *
 612 dri2GetGlxDrawableFromXDrawableId(Display *dpy, XID id);
 613 #endif
 614
 615 extern GLubyte *__glXFlushRenderBuffer(struct glx_context *, GLubyte *);
 616
 617 extern void __glXSendLargeChunk(struct glx_context * gc, GLint requestNumber,
 618                                 GLint totalRequests,
 619                                 const GLvoid * data, GLint dataLen);
 620
 621 extern void __glXSendLargeCommand(struct glx_context *, const GLvoid *, GLint,
 622                                   const GLvoid *, GLint);
 623
 624 /* Initialize the GLX extension for dpy */
 625 extern struct glx_display *__glXInitialize(Display *);
 626
 627 extern void __glXPreferEGL(int state);
 628
 629 /************************************************************************/
 630
 631 extern int __glXDebug;
 632
 633 /* This is per-thread storage in an MT environment */
 634 #if defined( HAVE_PTHREAD )
 635
 636 extern void __glXSetCurrentContext(struct glx_context * c);
 637
 638 # if defined( GLX_USE_TLS )
 639
 640 extern __thread void *__glX_tls_Context
 641    __attribute__ ((tls_model("initial-exec")));
 642
 643 #  define __glXGetCurrentContext() __glX_tls_Context
 644
 645 # else
 646
 647 extern struct glx_context *__glXGetCurrentContext(void);
 648
 649 # endif /* defined( GLX_USE_TLS ) */
 650
 651 #else
 652
 653 extern struct glx_context *__glXcurrentContext;
 654 #define __glXGetCurrentContext() __glXcurrentContext
 655 #define __glXSetCurrentContext(gc) __glXcurrentContext = gc
 656
 657 #endif /* defined( HAVE_PTHREAD ) */
 658
 659 extern void __glXSetCurrentContextNull(void);
 660
 661
 662 /*
 663 ** Global lock for all threads in this address space using the GLX
 664 ** extension
 665 */
 666 #if defined( HAVE_PTHREAD )
 667 extern pthread_mutex_t __glXmutex;
 668 #define __glXLock()    pthread_mutex_lock(&__glXmutex)
 669 #define __glXUnlock()  pthread_mutex_unlock(&__glXmutex)
 670 #else
 671 #define __glXLock()
 672 #define __glXUnlock()
 673 #endif
 674
 675 /*
 676 ** Setup for a command.  Initialize the extension for dpy if necessary.
 677 */
 678 extern CARD8 __glXSetupForCommand(Display * dpy);
 679
 680 /************************************************************************/
 681
 682 /*
 683 ** Data conversion and packing support.
 684 */
 685
 686 extern const GLuint __glXDefaultPixelStore[9];
 687
 688 /* Send an image to the server using RenderLarge. */
 689 extern void __glXSendLargeImage(struct glx_context * gc, GLint compsize, GLint dim,
 690                                 GLint width, GLint height, GLint depth,
 691                                 GLenum format, GLenum type,
 692                                 const GLvoid * src, GLubyte * pc,
 693                                 GLubyte * modes);
 694
 695 /* Return the size, in bytes, of some pixel data */
 696 extern GLint __glImageSize(GLint, GLint, GLint, GLenum, GLenum, GLenum);
 697
 698 /* Return the number of elements per group of a specified format*/
 699 extern GLint __glElementsPerGroup(GLenum format, GLenum type);
 700
 701 /* Return the number of bytes per element, based on the element type (other
 702 ** than GL_BITMAP).
 703 */
 704 extern GLint __glBytesPerElement(GLenum type);
 705
 706 /*
 707 ** Fill the transport buffer with the data from the users buffer,
 708 ** applying some of the pixel store modes (unpack modes) to the data
 709 ** first.  As a side effect of this call, the "modes" field is
 710 ** updated to contain the modes needed by the server to decode the
 711 ** sent data.
 712 */
 713 extern void __glFillImage(struct glx_context *, GLint, GLint, GLint, GLint, GLenum,
 714                           GLenum, const GLvoid *, GLubyte *, GLubyte *);
 715
 716 /* Copy map data with a stride into a packed buffer */
 717 extern void __glFillMap1f(GLint, GLint, GLint, const GLfloat *, GLubyte *);
 718 extern void __glFillMap1d(GLint, GLint, GLint, const GLdouble *, GLubyte *);
 719 extern void __glFillMap2f(GLint, GLint, GLint, GLint, GLint,
 720                           const GLfloat *, GLfloat *);
 721 extern void __glFillMap2d(GLint, GLint, GLint, GLint, GLint,
 722                           const GLdouble *, GLdouble *);
 723
 724 /*
 725 ** Empty an image out of the reply buffer into the clients memory applying
 726 ** the pack modes to pack back into the clients requested format.
 727 */
 728 extern void __glEmptyImage(struct glx_context *, GLint, GLint, GLint, GLint, GLenum,
 729                            GLenum, const GLubyte *, GLvoid *);
 730
 731
 732 /*
 733 ** Allocate and Initialize Vertex Array client state, and free.
 734 */
 735 extern void __glXInitVertexArrayState(struct glx_context *);
 736 extern void __glXFreeVertexArrayState(struct glx_context *);
 737
 738 /*
 739 ** Inform the Server of the major and minor numbers and of the client
 740 ** libraries extension string.
 741 */
 742 extern void __glXClientInfo(Display * dpy, int opcode);
 743
 744 _X_HIDDEN void
 745 __glX_send_client_info(struct glx_display *glx_dpy);
 746
 747 /************************************************************************/
 748
 749 /*
 750 ** Declarations that should be in Xlib
 751 */
 752 #ifdef __GL_USE_OUR_PROTOTYPES
 753 extern void _XFlush(Display *);
 754 extern Status _XReply(Display *, xReply *, int, Bool);
 755 extern void _XRead(Display *, void *, long);
 756 extern void _XSend(Display *, const void *, long);
 757 #endif
 758
 759
 760 extern void __glXInitializeVisualConfigFromTags(struct glx_config * config,
 761                                                 int count, const INT32 * bp,
 762                                                 Bool tagged_only,
 763                                                 Bool fbconfig_style_tags);
 764
 765 extern char *__glXQueryServerString(Display * dpy, int opcode,
 766                                     CARD32 screen, CARD32 name);
 767 extern char *__glXGetString(Display * dpy, int opcode,
 768                             CARD32 screen, CARD32 name);
 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(struct glx_screen *psc,
 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__ */