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 #include <stdint.h>
  51 #include <pthread.h>
  52 #include "GL/glxproto.h"
  53 #include "glxconfig.h"
  54 #include "glxhash.h"
  55 #include "util/macros.h"
  56
  57 #include "glxextensions.h"
  58
  59
  60 #define GLX_MAJOR_VERSION 1       /* current version numbers */
  61 #define GLX_MINOR_VERSION 4
  62
  63 #define __GLX_MAX_TEXTURE_UNITS 32
  64
  65 struct glx_display;
  66 struct glx_context;
  67
  68 /************************************************************************/
  69
  70 #ifdef GLX_DIRECT_RENDERING
  71
  72 extern void DRI_glXUseXFont(struct glx_context *ctx,
  73                             Font font, int first, int count, int listbase);
  74
  75 #endif
  76
  77 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
  78
  79 /**
  80  * Display dependent methods.  This structure is initialized during the
  81  * \c driCreateDisplay call.
  82  */
  83 typedef struct __GLXDRIdisplayRec __GLXDRIdisplay;
  84 typedef struct __GLXDRIscreenRec __GLXDRIscreen;
  85 typedef struct __GLXDRIdrawableRec __GLXDRIdrawable;
  86
  87 struct __GLXDRIdisplayRec
  88 {
  89     /**
  90      * Method to destroy the private DRI display data.
  91      */
  92    void (*destroyDisplay) (__GLXDRIdisplay * display);
  93
  94    struct glx_screen *(*createScreen)(int screen, struct glx_display * priv);
  95 };
  96
  97 struct __GLXDRIscreenRec {
  98
  99    void (*destroyScreen)(struct glx_screen *psc);
 100
 101    struct glx_context *(*createContext)(struct glx_screen *psc,
 102                                         struct glx_config *config,
 103                                         struct glx_context *shareList,
 104                                         int renderType);
 105
 106    __GLXDRIdrawable *(*createDrawable)(struct glx_screen *psc,
 107                                        XID drawable,
 108                                        GLXDrawable glxDrawable,
 109                                        struct glx_config *config);
 110
 111    int64_t (*swapBuffers)(__GLXDRIdrawable *pdraw, int64_t target_msc,
 112                           int64_t divisor, int64_t remainder, Bool flush);
 113    void (*copySubBuffer)(__GLXDRIdrawable *pdraw,
 114                          int x, int y, int width, int height, Bool flush);
 115    int (*getDrawableMSC)(struct glx_screen *psc, __GLXDRIdrawable *pdraw,
 116                          int64_t *ust, int64_t *msc, int64_t *sbc);
 117    int (*waitForMSC)(__GLXDRIdrawable *pdraw, int64_t target_msc,
 118                      int64_t divisor, int64_t remainder, int64_t *ust,
 119                      int64_t *msc, int64_t *sbc);
 120    int (*waitForSBC)(__GLXDRIdrawable *pdraw, int64_t target_sbc, int64_t *ust,
 121                      int64_t *msc, int64_t *sbc);
 122    int (*setSwapInterval)(__GLXDRIdrawable *pdraw, int interval);
 123    int (*getSwapInterval)(__GLXDRIdrawable *pdraw);
 124    int (*getBufferAge)(__GLXDRIdrawable *pdraw);
 125 };
 126
 127 struct __GLXDRIdrawableRec
 128 {
 129    void (*destroyDrawable) (__GLXDRIdrawable * drawable);
 130
 131    XID xDrawable;
 132    XID drawable;
 133    struct glx_screen *psc;
 134    GLenum textureTarget;
 135    GLenum textureFormat;        /* EXT_texture_from_pixmap support */
 136    unsigned long eventMask;
 137    int refcount;
 138 };
 139
 140 /*
 141 ** Function to create and DRI display data and initialize the display
 142 ** dependent methods.
 143 */
 144 extern __GLXDRIdisplay *driswCreateDisplay(Display * dpy);
 145 extern __GLXDRIdisplay *driCreateDisplay(Display * dpy);
 146 extern __GLXDRIdisplay *dri2CreateDisplay(Display * dpy);
 147 extern void dri2InvalidateBuffers(Display *dpy, XID drawable);
 148 extern unsigned dri2GetSwapEventType(Display *dpy, XID drawable);
 149
 150 extern __GLXDRIdisplay *dri3_create_display(Display * dpy);
 151
 152 /*
 153 ** Functions to obtain driver configuration information from a direct
 154 ** rendering client application
 155 */
 156 extern const char *glXGetScreenDriver(Display * dpy, int scrNum);
 157
 158 extern const char *glXGetDriverConfig(const char *driverName);
 159
 160 #endif
 161
 162 /************************************************************************/
 163
 164 #define __GL_CLIENT_ATTRIB_STACK_DEPTH 16
 165
 166 typedef struct __GLXpixelStoreModeRec
 167 {
 168    GLboolean swapEndian;
 169    GLboolean lsbFirst;
 170    GLuint rowLength;
 171    GLuint imageHeight;
 172    GLuint imageDepth;
 173    GLuint skipRows;
 174    GLuint skipPixels;
 175    GLuint skipImages;
 176    GLuint alignment;
 177 } __GLXpixelStoreMode;
 178
 179
 180 typedef struct __GLXattributeRec
 181 {
 182    GLuint mask;
 183
 184     /**
 185      * Pixel storage state.  Most of the pixel store mode state is kept
 186      * here and used by the client code to manage the packing and
 187      * unpacking of data sent to/received from the server.
 188      */
 189    __GLXpixelStoreMode storePack, storeUnpack;
 190
 191     /**
 192      * Is EXT_vertex_array / GL 1.1 DrawArrays protocol specifically
 193      * disabled?
 194      */
 195    GLboolean NoDrawArraysProtocol;
 196
 197     /**
 198      * Vertex Array storage state.  The vertex array component
 199      * state is stored here and is used to manage the packing of
 200      * DrawArrays data sent to the server.
 201      */
 202    struct array_state_vector *array_state;
 203 } __GLXattribute;
 204
 205 typedef struct __GLXattributeMachineRec
 206 {
 207    __GLXattribute *stack[__GL_CLIENT_ATTRIB_STACK_DEPTH];
 208    __GLXattribute **stackPointer;
 209 } __GLXattributeMachine;
 210
 211 typedef struct _mesa_glinterop_device_info mesa_glinterop_device_info;
 212 typedef struct _mesa_glinterop_export_in mesa_glinterop_export_in;
 213 typedef struct _mesa_glinterop_export_out mesa_glinterop_export_out;
 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    int (*interop_query_device_info)(struct glx_context *ctx,
 230                                     mesa_glinterop_device_info *out);
 231    int (*interop_export_object)(struct glx_context *ctx,
 232                                 const mesa_glinterop_export_in *in,
 233                                 mesa_glinterop_export_out *out);
 234 };
 235
 236 /**
 237  * GLX state that needs to be kept on the client.  One of these records
 238  * exist for each context that has been made current by this client.
 239  */
 240 struct glx_context
 241 {
 242     /**
 243      * \name Drawing command buffer.
 244      *
 245      * Drawing commands are packed into this buffer before being sent as a
 246      * single GLX protocol request.  The buffer is sent when it overflows or
 247      * is flushed by \c __glXFlushRenderBuffer.  \c pc is the next location
 248      * in the buffer to be filled.  \c limit is described above in the buffer
 249      * slop discussion.
 250      *
 251      * Commands that require large amounts of data to be transfered will
 252      * also use this buffer to hold a header that describes the large
 253      * command.
 254      *
 255      * These must be the first 6 fields since they are static initialized
 256      * in the dummy context in glxext.c
 257      */
 258    /*@{ */
 259    GLubyte *buf;
 260    GLubyte *pc;
 261    GLubyte *limit;
 262    GLubyte *bufEnd;
 263    GLint bufSize;
 264    /*@} */
 265
 266    const struct glx_context_vtable *vtable;
 267
 268     /**
 269      * The XID of this rendering context.  When the context is created a
 270      * new XID is allocated.  This is set to None when the context is
 271      * destroyed but is still current to some thread. In this case the
 272      * context will be freed on next MakeCurrent.
 273      */
 274    XID xid;
 275
 276     /**
 277      * The XID of the \c shareList context.
 278      */
 279    XID share_xid;
 280
 281     /**
 282      * Screen number.
 283      */
 284    GLint screen;
 285    struct glx_screen *psc;
 286
 287     /**
 288      * \c GL_TRUE if the context was created with ImportContext, which
 289      * means the server-side context was created by another X client.
 290      */
 291    GLboolean imported;
 292
 293     /**
 294      * The context tag returned by MakeCurrent when this context is made
 295      * current. This tag is used to identify the context that a thread has
 296      * current so that proper server context management can be done.  It is
 297      * used for all context specific commands (i.e., \c Render, \c RenderLarge,
 298      * \c WaitX, \c WaitGL, \c UseXFont, and \c MakeCurrent (for the old
 299      * context)).
 300      */
 301    GLXContextTag currentContextTag;
 302
 303     /**
 304      * \name Rendering mode
 305      *
 306      * The rendering mode is kept on the client as well as the server.
 307      * When \c glRenderMode is called, the buffer associated with the
 308      * previous rendering mode (feedback or select) is filled.
 309      */
 310    /*@{ */
 311    GLenum renderMode;
 312    GLfloat *feedbackBuf;
 313    GLuint *selectBuf;
 314    /*@} */
 315
 316     /**
 317      * Fill newImage with the unpacked form of \c oldImage getting it
 318      * ready for transport to the server.
 319      */
 320    void (*fillImage) (struct glx_context *, GLint, GLint, GLint, GLint, GLenum,
 321                       GLenum, const GLvoid *, GLubyte *, GLubyte *);
 322
 323     /**
 324      * Client side attribs.
 325      */
 326    __GLXattributeMachine attributes;
 327
 328     /**
 329      * Client side error code.  This is set when client side gl API
 330      * routines need to set an error because of a bad enumerant or
 331      * running out of memory, etc.
 332      */
 333    GLenum error;
 334
 335     /**
 336      * Whether this context does direct rendering.
 337      */
 338    Bool isDirect;
 339
 340 #if defined(GLX_DIRECT_RENDERING) && defined(GLX_USE_APPLEGL)
 341    void *driContext;
 342 #endif
 343
 344     /**
 345      * \c dpy of current display for this context.  Will be \c NULL if not
 346      * current to any display, or if this is the "dummy context".
 347      */
 348    Display *currentDpy;
 349
 350     /**
 351      * The current drawable for this context.  Will be None if this
 352      * context is not current to any drawable.  currentReadable is below.
 353      */
 354    GLXDrawable currentDrawable;
 355
 356     /**
 357      * \name GL Constant Strings
 358      *
 359      * Constant strings that describe the server implementation
 360      * These pertain to GL attributes, not to be confused with
 361      * GLX versioning attributes.
 362      */
 363    /*@{ */
 364    GLubyte *vendor;
 365    GLubyte *renderer;
 366    GLubyte *version;
 367    GLubyte *extensions;
 368    /*@} */
 369
 370     /**
 371      * Maximum small render command size.  This is the smaller of 64k and
 372      * the size of the above buffer.
 373      */
 374    GLint maxSmallRenderCommandSize;
 375
 376     /**
 377      * Major opcode for the extension.  Copied here so a lookup isn't
 378      * needed.
 379      */
 380    GLint majorOpcode;
 381
 382     /**
 383      * Pointer to the config used to create this context.
 384      */
 385    struct glx_config *config;
 386
 387     /**
 388      * The current read-drawable for this context.  Will be None if this
 389      * context is not current to any drawable.
 390      *
 391      * \since Internal API version 20030606.
 392      */
 393    GLXDrawable currentReadable;
 394
 395    /**
 396     * Pointer to client-state data that is private to libGL.  This is only
 397     * used for indirect rendering contexts.
 398     *
 399     * No internal API version change was made for this change.  Client-side
 400     * drivers should NEVER use this data or even care that it exists.
 401     */
 402    void *client_state_private;
 403
 404    /**
 405     * Stored value for \c glXQueryContext attribute \c GLX_RENDER_TYPE.
 406     */
 407    int renderType;
 408
 409    /**
 410     * \name Raw server GL version
 411     *
 412     * True core GL version supported by the server.  This is the raw value
 413     * returned by the server, and it may not reflect what is actually
 414     * supported (or reported) by the client-side library.
 415     */
 416    /*@{ */
 417    int server_major;        /**< Major version number. */
 418    int server_minor;        /**< Minor version number. */
 419    /*@} */
 420
 421    /**
 422     * Number of threads we're currently current in.
 423     */
 424    unsigned long thread_refcount;
 425
 426    char gl_extension_bits[__GL_EXT_BYTES];
 427 };
 428
 429 extern Bool
 430 glx_context_init(struct glx_context *gc,
 431                  struct glx_screen *psc, struct glx_config *fbconfig);
 432
 433 #define __glXSetError(gc,code)  \
 434    if (!(gc)->error) {          \
 435       (gc)->error = code;       \
 436    }
 437
 438 extern void __glFreeAttributeState(struct glx_context *);
 439
 440 /************************************************************************/
 441
 442 /**
 443  * The size of the largest drawing command known to the implementation
 444  * that will use the GLXRender GLX command.  In this case it is
 445  * \c glPolygonStipple.
 446  */
 447 #define __GLX_MAX_SMALL_RENDER_CMD_SIZE 156
 448
 449 /**
 450  * To keep the implementation fast, the code uses a "limit" pointer
 451  * to determine when the drawing command buffer is too full to hold
 452  * another fixed size command.  This constant defines the amount of
 453  * space that must always be available in the drawing command buffer
 454  * at all times for the implementation to work.  It is important that
 455  * the number be just large enough, but not so large as to reduce the
 456  * efficacy of the buffer.  The "+32" is just to keep the code working
 457  * in case somebody counts wrong.
 458  */
 459 #define __GLX_BUFFER_LIMIT_SIZE (__GLX_MAX_SMALL_RENDER_CMD_SIZE + 32)
 460
 461 /**
 462  * This implementation uses a smaller threshold for switching
 463  * to the RenderLarge protocol than the protcol requires so that
 464  * large copies don't occur.
 465  */
 466 #define __GLX_RENDER_CMD_SIZE_LIMIT 4096
 467
 468 /**
 469  * One of these records exists per screen of the display.  It contains
 470  * a pointer to the config data for that screen (if the screen supports GL).
 471  */
 472 struct glx_screen_vtable {
 473    struct glx_context *(*create_context)(struct glx_screen *psc,
 474                                          struct glx_config *config,
 475                                          struct glx_context *shareList,
 476                                          int renderType);
 477
 478    struct glx_context *(*create_context_attribs)(struct glx_screen *psc,
 479                                                  struct glx_config *config,
 480                                                  struct glx_context *shareList,
 481                                                  unsigned num_attrib,
 482                                                  const uint32_t *attribs,
 483                                                  unsigned *error);
 484    int (*query_renderer_integer)(struct glx_screen *psc,
 485                                  int attribute,
 486                                  unsigned int *value);
 487    int (*query_renderer_string)(struct glx_screen *psc,
 488                                 int attribute,
 489                                 const char **value);
 490 };
 491
 492 struct glx_screen
 493 {
 494    const struct glx_screen_vtable *vtable;
 495
 496     /**
 497      * GLX extension string reported by the X-server.
 498      */
 499    const char *serverGLXexts;
 500
 501     /**
 502      * GLX extension string to be reported to applications.  This is the
 503      * set of extensions that the application can actually use.
 504      */
 505    char *effectiveGLXexts;
 506
 507    struct glx_display *display;
 508
 509    Display *dpy;
 510    int scr;
 511
 512 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
 513     /**
 514      * Per screen direct rendering interface functions and data.
 515      */
 516    __GLXDRIscreen *driScreen;
 517 #endif
 518
 519     /**
 520      * Linked list of glx visuals and  fbconfigs for this screen.
 521      */
 522    struct glx_config *visuals, *configs;
 523
 524     /**
 525      * Per-screen dynamic GLX extension tracking.  The \c direct_support
 526      * field only contains enough bits for 64 extensions.  Should libGL
 527      * ever need to track more than 64 GLX extensions, we can safely grow
 528      * this field.  The \c struct glx_screen structure is not used outside
 529      * libGL.
 530      */
 531    /*@{ */
 532    unsigned char direct_support[8];
 533    GLboolean ext_list_first_time;
 534    /*@} */
 535
 536 };
 537
 538 /**
 539  * Per display private data.  One of these records exists for each display
 540  * that is using the OpenGL (GLX) extension.
 541  */
 542 struct glx_display
 543 {
 544    /* The extension protocol codes */
 545    XExtCodes *codes;
 546    struct glx_display *next;
 547
 548     /**
 549      * Back pointer to the display
 550      */
 551    Display *dpy;
 552
 553     /**
 554      * The \c majorOpcode is common to all connections to the same server.
 555      * It is also copied into the context structure.
 556      */
 557    int majorOpcode;
 558
 559     /**
 560      * \name Server Version
 561      *
 562      * Major and minor version returned by the server during initialization.
 563      */
 564    /*@{ */
 565    int majorVersion, minorVersion;
 566    /*@} */
 567
 568     /**
 569      * \name Storage for the servers GLX vendor and versions strings.
 570      *
 571      * These are the same for all screens on this display. These fields will
 572      * be filled in on demand.
 573      */
 574    /*@{ */
 575    const char *serverGLXvendor;
 576    const char *serverGLXversion;
 577    /*@} */
 578
 579     /**
 580      * Configurations of visuals for all screens on this display.
 581      * Also, per screen data which now includes the server \c GLX_EXTENSION
 582      * string.
 583      */
 584    struct glx_screen **screens;
 585
 586    __glxHashTable *glXDrawHash;
 587
 588 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
 589    __glxHashTable *drawHash;
 590
 591     /**
 592      * Per display direct rendering interface functions and data.
 593      */
 594    __GLXDRIdisplay *driswDisplay;
 595    __GLXDRIdisplay *driDisplay;
 596    __GLXDRIdisplay *dri2Display;
 597    __GLXDRIdisplay *dri3Display;
 598 #endif
 599 };
 600
 601 struct glx_drawable {
 602    XID xDrawable;
 603    XID drawable;
 604
 605    uint32_t lastEventSbc;
 606    int64_t eventSbcWrap;
 607 };
 608
 609 extern int
 610 glx_screen_init(struct glx_screen *psc,
 611                 int screen, struct glx_display * priv);
 612 extern void
 613 glx_screen_cleanup(struct glx_screen *psc);
 614
 615 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
 616 extern __GLXDRIdrawable *
 617 dri2GetGlxDrawableFromXDrawableId(Display *dpy, XID id);
 618 #endif
 619
 620 extern GLubyte *__glXFlushRenderBuffer(struct glx_context *, GLubyte *);
 621
 622 extern void __glXSendLargeChunk(struct glx_context * gc, GLint requestNumber,
 623                                 GLint totalRequests,
 624                                 const GLvoid * data, GLint dataLen);
 625
 626 extern void __glXSendLargeCommand(struct glx_context *, const GLvoid *, GLint,
 627                                   const GLvoid *, GLint);
 628
 629 /* Initialize the GLX extension for dpy */
 630 extern struct glx_display *__glXInitialize(Display *);
 631
 632 extern void __glXPreferEGL(int state);
 633
 634 /************************************************************************/
 635
 636 extern int __glXDebug;
 637
 638 /* This is per-thread storage in an MT environment */
 639
 640 extern void __glXSetCurrentContext(struct glx_context * c);
 641
 642 # if defined( GLX_USE_TLS )
 643
 644 extern __thread void *__glX_tls_Context
 645    __attribute__ ((tls_model("initial-exec")));
 646
 647 #  define __glXGetCurrentContext() __glX_tls_Context
 648
 649 # else
 650
 651 extern struct glx_context *__glXGetCurrentContext(void);
 652
 653 # endif /* defined( GLX_USE_TLS ) */
 654
 655 extern void __glXSetCurrentContextNull(void);
 656
 657
 658 /*
 659 ** Global lock for all threads in this address space using the GLX
 660 ** extension
 661 */
 662 extern pthread_mutex_t __glXmutex;
 663 #define __glXLock()    pthread_mutex_lock(&__glXmutex)
 664 #define __glXUnlock()  pthread_mutex_unlock(&__glXmutex)
 665
 666 /*
 667 ** Setup for a command.  Initialize the extension for dpy if necessary.
 668 */
 669 extern CARD8 __glXSetupForCommand(Display * dpy);
 670
 671 /************************************************************************/
 672
 673 /*
 674 ** Data conversion and packing support.
 675 */
 676
 677 extern const GLuint __glXDefaultPixelStore[9];
 678
 679 /* Send an image to the server using RenderLarge. */
 680 extern void __glXSendLargeImage(struct glx_context * gc, GLint compsize, GLint dim,
 681                                 GLint width, GLint height, GLint depth,
 682                                 GLenum format, GLenum type,
 683                                 const GLvoid * src, GLubyte * pc,
 684                                 GLubyte * modes);
 685
 686 /* Return the size, in bytes, of some pixel data */
 687 extern GLint __glImageSize(GLint, GLint, GLint, GLenum, GLenum, GLenum);
 688
 689 /* Return the number of elements per group of a specified format*/
 690 extern GLint __glElementsPerGroup(GLenum format, GLenum type);
 691
 692 /* Return the number of bytes per element, based on the element type (other
 693 ** than GL_BITMAP).
 694 */
 695 extern GLint __glBytesPerElement(GLenum type);
 696
 697 /*
 698 ** Fill the transport buffer with the data from the users buffer,
 699 ** applying some of the pixel store modes (unpack modes) to the data
 700 ** first.  As a side effect of this call, the "modes" field is
 701 ** updated to contain the modes needed by the server to decode the
 702 ** sent data.
 703 */
 704 extern void __glFillImage(struct glx_context *, GLint, GLint, GLint, GLint, GLenum,
 705                           GLenum, const GLvoid *, GLubyte *, GLubyte *);
 706
 707 /* Copy map data with a stride into a packed buffer */
 708 extern void __glFillMap1f(GLint, GLint, GLint, const GLfloat *, GLubyte *);
 709 extern void __glFillMap1d(GLint, GLint, GLint, const GLdouble *, GLubyte *);
 710 extern void __glFillMap2f(GLint, GLint, GLint, GLint, GLint,
 711                           const GLfloat *, GLfloat *);
 712 extern void __glFillMap2d(GLint, GLint, GLint, GLint, GLint,
 713                           const GLdouble *, GLdouble *);
 714
 715 /*
 716 ** Empty an image out of the reply buffer into the clients memory applying
 717 ** the pack modes to pack back into the clients requested format.
 718 */
 719 extern void __glEmptyImage(struct glx_context *, GLint, GLint, GLint, GLint, GLenum,
 720                            GLenum, const GLubyte *, GLvoid *);
 721
 722
 723 /*
 724 ** Allocate and Initialize Vertex Array client state, and free.
 725 */
 726 extern void __glXInitVertexArrayState(struct glx_context *);
 727 extern void __glXFreeVertexArrayState(struct glx_context *);
 728
 729 /*
 730 ** Inform the Server of the major and minor numbers and of the client
 731 ** libraries extension string.
 732 */
 733 extern void __glXClientInfo(Display * dpy, int opcode);
 734
 735 _X_HIDDEN void
 736 __glX_send_client_info(struct glx_display *glx_dpy);
 737
 738 /************************************************************************/
 739
 740 /*
 741 ** Declarations that should be in Xlib
 742 */
 743 #ifdef __GL_USE_OUR_PROTOTYPES
 744 extern void _XFlush(Display *);
 745 extern Status _XReply(Display *, xReply *, int, Bool);
 746 extern void _XRead(Display *, void *, long);
 747 extern void _XSend(Display *, const void *, long);
 748 #endif
 749
 750
 751 extern void __glXInitializeVisualConfigFromTags(struct glx_config * config,
 752                                                 int count, const INT32 * bp,
 753                                                 Bool tagged_only,
 754                                                 Bool fbconfig_style_tags);
 755
 756 extern char *__glXQueryServerString(Display * dpy, int opcode,
 757                                     CARD32 screen, CARD32 name);
 758 extern char *__glXGetString(Display * dpy, int opcode,
 759                             CARD32 screen, CARD32 name);
 760
 761 extern const char __glXGLClientVersion[];
 762 extern const char __glXGLClientExtensions[];
 763
 764 /* Get the unadjusted system time */
 765 extern int __glXGetUST(int64_t * ust);
 766
 767 extern GLboolean __glXGetMscRateOML(Display * dpy, GLXDrawable drawable,
 768                                     int32_t * numerator,
 769                                     int32_t * denominator);
 770
 771 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
 772 extern GLboolean
 773 __glxGetMscRate(struct glx_screen *psc,
 774                 int32_t * numerator, int32_t * denominator);
 775
 776 /* So that dri2.c:DRI2WireToEvent() can access
 777  * glx_info->codes->first_event */
 778 XExtDisplayInfo *__glXFindDisplay (Display *dpy);
 779
 780 extern void
 781 GarbageCollectDRIDrawables(struct glx_screen *psc);
 782
 783 extern __GLXDRIdrawable *
 784 GetGLXDRIDrawable(Display *dpy, GLXDrawable drawable);
 785 #endif
 786
 787 extern struct glx_screen *GetGLXScreenConfigs(Display * dpy, int scrn);
 788
 789 #ifdef GLX_USE_APPLEGL
 790 extern struct glx_screen *
 791 applegl_create_screen(int screen, struct glx_display * priv);
 792
 793 extern struct glx_context *
 794 applegl_create_context(struct glx_screen *psc,
 795                         struct glx_config *mode,
 796                         struct glx_context *shareList, int renderType);
 797
 798 extern int
 799 applegl_create_display(struct glx_display *display);
 800 #endif
 801
 802 extern Bool validate_renderType_against_config(const struct glx_config *config,
 803                                                int renderType);
 804
 805
 806 extern struct glx_drawable *GetGLXDrawable(Display *dpy, GLXDrawable drawable);
 807 extern int InitGLXDrawable(Display *dpy, struct glx_drawable *glxDraw,
 808                            XID xDrawable, GLXDrawable drawable);
 809 extern void DestroyGLXDrawable(Display *dpy, GLXDrawable drawable);
 810
 811 extern struct glx_context dummyContext;
 812
 813 extern struct glx_screen *
 814 indirect_create_screen(int screen, struct glx_display * priv);
 815 extern struct glx_context *
 816 indirect_create_context(struct glx_screen *psc,
 817                         struct glx_config *mode,
 818                         struct glx_context *shareList, int renderType);
 819 extern struct glx_context *
 820 indirect_create_context_attribs(struct glx_screen *base,
 821                                 struct glx_config *config_base,
 822                                 struct glx_context *shareList,
 823                                 unsigned num_attribs,
 824                                 const uint32_t *attribs,
 825                                 unsigned *error);
 826
 827 #endif /* !__GLX_client_h__ */