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 #ifdef __cplusplus
  61 extern "C" {
  62 #endif
  63
  64
  65 #define GLX_MAJOR_VERSION 1       /* current version numbers */
  66 #define GLX_MINOR_VERSION 4
  67
  68 #define __GLX_MAX_TEXTURE_UNITS 32
  69
  70 struct glx_display;
  71 struct glx_context;
  72
  73 /************************************************************************/
  74
  75 #ifdef GLX_DIRECT_RENDERING
  76
  77 extern void DRI_glXUseXFont(struct glx_context *ctx,
  78                             Font font, int first, int count, int listbase);
  79
  80 #endif
  81
  82 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
  83
  84 /**
  85  * Display dependent methods.  This structure is initialized during the
  86  * \c driCreateDisplay call.
  87  */
  88 typedef struct __GLXDRIdisplayRec __GLXDRIdisplay;
  89 typedef struct __GLXDRIscreenRec __GLXDRIscreen;
  90 typedef struct __GLXDRIdrawableRec __GLXDRIdrawable;
  91
  92 struct __GLXDRIdisplayRec
  93 {
  94     /**
  95      * Method to destroy the private DRI display data.
  96      */
  97    void (*destroyDisplay) (__GLXDRIdisplay * display);
  98
  99    struct glx_screen *(*createScreen)(int screen, struct glx_display * priv);
 100 };
 101
 102 struct __GLXDRIscreenRec {
 103
 104    void (*destroyScreen)(struct glx_screen *psc);
 105
 106    struct glx_context *(*createContext)(struct glx_screen *psc,
 107                                         struct glx_config *config,
 108                                         struct glx_context *shareList,
 109                                         int renderType);
 110
 111    __GLXDRIdrawable *(*createDrawable)(struct glx_screen *psc,
 112                                        XID drawable,
 113                                        GLXDrawable glxDrawable,
 114                                        struct glx_config *config);
 115
 116    int64_t (*swapBuffers)(__GLXDRIdrawable *pdraw, int64_t target_msc,
 117                           int64_t divisor, int64_t remainder, Bool flush);
 118    void (*copySubBuffer)(__GLXDRIdrawable *pdraw,
 119                          int x, int y, int width, int height, Bool flush);
 120    int (*getDrawableMSC)(struct glx_screen *psc, __GLXDRIdrawable *pdraw,
 121                          int64_t *ust, int64_t *msc, int64_t *sbc);
 122    int (*waitForMSC)(__GLXDRIdrawable *pdraw, int64_t target_msc,
 123                      int64_t divisor, int64_t remainder, int64_t *ust,
 124                      int64_t *msc, int64_t *sbc);
 125    int (*waitForSBC)(__GLXDRIdrawable *pdraw, int64_t target_sbc, int64_t *ust,
 126                      int64_t *msc, int64_t *sbc);
 127    int (*setSwapInterval)(__GLXDRIdrawable *pdraw, int interval);
 128    int (*getSwapInterval)(__GLXDRIdrawable *pdraw);
 129    int (*getBufferAge)(__GLXDRIdrawable *pdraw);
 130 };
 131
 132 struct __GLXDRIdrawableRec
 133 {
 134    void (*destroyDrawable) (__GLXDRIdrawable * drawable);
 135
 136    XID xDrawable;
 137    XID drawable;
 138    struct glx_screen *psc;
 139    GLenum textureTarget;
 140    GLenum textureFormat;        /* EXT_texture_from_pixmap support */
 141    unsigned long eventMask;
 142    int refcount;
 143 };
 144
 145 /*
 146 ** Function to create and DRI display data and initialize the display
 147 ** dependent methods.
 148 */
 149 extern __GLXDRIdisplay *driswCreateDisplay(Display * dpy);
 150 extern __GLXDRIdisplay *driCreateDisplay(Display * dpy);
 151 extern __GLXDRIdisplay *dri2CreateDisplay(Display * dpy);
 152 extern void dri2InvalidateBuffers(Display *dpy, XID drawable);
 153 extern unsigned dri2GetSwapEventType(Display *dpy, XID drawable);
 154
 155 extern __GLXDRIdisplay *dri3_create_display(Display * dpy);
 156
 157 /*
 158 ** Functions to obtain driver configuration information from a direct
 159 ** rendering client application
 160 */
 161 extern const char *glXGetScreenDriver(Display * dpy, int scrNum);
 162
 163 extern const char *glXGetDriverConfig(const char *driverName);
 164
 165 #endif
 166
 167 /************************************************************************/
 168
 169 #define __GL_CLIENT_ATTRIB_STACK_DEPTH 16
 170
 171 typedef struct __GLXpixelStoreModeRec
 172 {
 173    GLboolean swapEndian;
 174    GLboolean lsbFirst;
 175    GLuint rowLength;
 176    GLuint imageHeight;
 177    GLuint imageDepth;
 178    GLuint skipRows;
 179    GLuint skipPixels;
 180    GLuint skipImages;
 181    GLuint alignment;
 182 } __GLXpixelStoreMode;
 183
 184
 185 typedef struct __GLXattributeRec
 186 {
 187    GLuint mask;
 188
 189     /**
 190      * Pixel storage state.  Most of the pixel store mode state is kept
 191      * here and used by the client code to manage the packing and
 192      * unpacking of data sent to/received from the server.
 193      */
 194    __GLXpixelStoreMode storePack, storeUnpack;
 195
 196     /**
 197      * Is EXT_vertex_array / GL 1.1 DrawArrays protocol specifically
 198      * disabled?
 199      */
 200    GLboolean NoDrawArraysProtocol;
 201
 202     /**
 203      * Vertex Array storage state.  The vertex array component
 204      * state is stored here and is used to manage the packing of
 205      * DrawArrays data sent to the server.
 206      */
 207    struct array_state_vector *array_state;
 208 } __GLXattribute;
 209
 210 typedef struct __GLXattributeMachineRec
 211 {
 212    __GLXattribute *stack[__GL_CLIENT_ATTRIB_STACK_DEPTH];
 213    __GLXattribute **stackPointer;
 214 } __GLXattributeMachine;
 215
 216 typedef struct _mesa_glinterop_device_info mesa_glinterop_device_info;
 217 typedef struct _mesa_glinterop_export_in mesa_glinterop_export_in;
 218 typedef struct _mesa_glinterop_export_out mesa_glinterop_export_out;
 219
 220 struct glx_context_vtable {
 221    void (*destroy)(struct glx_context *ctx);
 222    int (*bind)(struct glx_context *context, struct glx_context *old,
 223                GLXDrawable draw, GLXDrawable read);
 224    void (*unbind)(struct glx_context *context, struct glx_context *new_ctx);
 225    void (*wait_gl)(struct glx_context *ctx);
 226    void (*wait_x)(struct glx_context *ctx);
 227    void (*use_x_font)(struct glx_context *ctx,
 228                       Font font, int first, int count, int listBase);
 229    void (*bind_tex_image)(Display * dpy,
 230                           GLXDrawable drawable,
 231                           int buffer, const int *attrib_list);
 232    void (*release_tex_image)(Display * dpy, GLXDrawable drawable, int buffer);
 233    void * (*get_proc_address)(const char *symbol);
 234    int (*interop_query_device_info)(struct glx_context *ctx,
 235                                     mesa_glinterop_device_info *out);
 236    int (*interop_export_object)(struct glx_context *ctx,
 237                                 mesa_glinterop_export_in *in,
 238                                 mesa_glinterop_export_out *out);
 239 };
 240
 241 /**
 242  * GLX state that needs to be kept on the client.  One of these records
 243  * exist for each context that has been made current by this client.
 244  */
 245 struct glx_context
 246 {
 247     /**
 248      * \name Drawing command buffer.
 249      *
 250      * Drawing commands are packed into this buffer before being sent as a
 251      * single GLX protocol request.  The buffer is sent when it overflows or
 252      * is flushed by \c __glXFlushRenderBuffer.  \c pc is the next location
 253      * in the buffer to be filled.  \c limit is described above in the buffer
 254      * slop discussion.
 255      *
 256      * Commands that require large amounts of data to be transfered will
 257      * also use this buffer to hold a header that describes the large
 258      * command.
 259      *
 260      * These must be the first 6 fields since they are static initialized
 261      * in the dummy context in glxext.c
 262      */
 263    /*@{ */
 264    GLubyte *buf;
 265    GLubyte *pc;
 266    GLubyte *limit;
 267    GLubyte *bufEnd;
 268    GLint bufSize;
 269    /*@} */
 270
 271    const struct glx_context_vtable *vtable;
 272
 273     /**
 274      * The XID of this rendering context.  When the context is created a
 275      * new XID is allocated.  This is set to None when the context is
 276      * destroyed but is still current to some thread. In this case the
 277      * context will be freed on next MakeCurrent.
 278      */
 279    XID xid;
 280
 281     /**
 282      * The XID of the \c shareList context.
 283      */
 284    XID share_xid;
 285
 286     /**
 287      * Screen number.
 288      */
 289    GLint screen;
 290    struct glx_screen *psc;
 291
 292     /**
 293      * \c GL_TRUE if the context was created with ImportContext, which
 294      * means the server-side context was created by another X client.
 295      */
 296    GLboolean imported;
 297
 298     /**
 299      * The context tag returned by MakeCurrent when this context is made
 300      * current. This tag is used to identify the context that a thread has
 301      * current so that proper server context management can be done.  It is
 302      * used for all context specific commands (i.e., \c Render, \c RenderLarge,
 303      * \c WaitX, \c WaitGL, \c UseXFont, and \c MakeCurrent (for the old
 304      * context)).
 305      */
 306    GLXContextTag currentContextTag;
 307
 308     /**
 309      * \name Rendering mode
 310      *
 311      * The rendering mode is kept on the client as well as the server.
 312      * When \c glRenderMode is called, the buffer associated with the
 313      * previous rendering mode (feedback or select) is filled.
 314      */
 315    /*@{ */
 316    GLenum renderMode;
 317    GLfloat *feedbackBuf;
 318    GLuint *selectBuf;
 319    /*@} */
 320
 321     /**
 322      * Fill newImage with the unpacked form of \c oldImage getting it
 323      * ready for transport to the server.
 324      */
 325    void (*fillImage) (struct glx_context *, GLint, GLint, GLint, GLint, GLenum,
 326                       GLenum, const GLvoid *, GLubyte *, GLubyte *);
 327
 328     /**
 329      * Client side attribs.
 330      */
 331    __GLXattributeMachine attributes;
 332
 333     /**
 334      * Client side error code.  This is set when client side gl API
 335      * routines need to set an error because of a bad enumerant or
 336      * running out of memory, etc.
 337      */
 338    GLenum error;
 339
 340     /**
 341      * Whether this context does direct rendering.
 342      */
 343    Bool isDirect;
 344
 345 #if defined(GLX_DIRECT_RENDERING) && defined(GLX_USE_APPLEGL)
 346    void *driContext;
 347 #endif
 348
 349     /**
 350      * \c dpy of current display for this context.  Will be \c NULL if not
 351      * current to any display, or if this is the "dummy context".
 352      */
 353    Display *currentDpy;
 354
 355     /**
 356      * The current drawable for this context.  Will be None if this
 357      * context is not current to any drawable.  currentReadable is below.
 358      */
 359    GLXDrawable currentDrawable;
 360
 361     /**
 362      * \name GL Constant Strings
 363      *
 364      * Constant strings that describe the server implementation
 365      * These pertain to GL attributes, not to be confused with
 366      * GLX versioning attributes.
 367      */
 368    /*@{ */
 369    GLubyte *vendor;
 370    GLubyte *renderer;
 371    GLubyte *version;
 372    GLubyte *extensions;
 373    /*@} */
 374
 375     /**
 376      * Maximum small render command size.  This is the smaller of 64k and
 377      * the size of the above buffer.
 378      */
 379    GLint maxSmallRenderCommandSize;
 380
 381     /**
 382      * Major opcode for the extension.  Copied here so a lookup isn't
 383      * needed.
 384      */
 385    GLint majorOpcode;
 386
 387     /**
 388      * Pointer to the config used to create this context.
 389      */
 390    struct glx_config *config;
 391
 392     /**
 393      * The current read-drawable for this context.  Will be None if this
 394      * context is not current to any drawable.
 395      *
 396      * \since Internal API version 20030606.
 397      */
 398    GLXDrawable currentReadable;
 399
 400    /**
 401     * Pointer to client-state data that is private to libGL.  This is only
 402     * used for indirect rendering contexts.
 403     *
 404     * No internal API version change was made for this change.  Client-side
 405     * drivers should NEVER use this data or even care that it exists.
 406     */
 407    void *client_state_private;
 408
 409    /**
 410     * Stored value for \c glXQueryContext attribute \c GLX_RENDER_TYPE.
 411     */
 412    int renderType;
 413
 414    /**
 415     * \name Raw server GL version
 416     *
 417     * True core GL version supported by the server.  This is the raw value
 418     * returned by the server, and it may not reflect what is actually
 419     * supported (or reported) by the client-side library.
 420     */
 421    /*@{ */
 422    int server_major;        /**< Major version number. */
 423    int server_minor;        /**< Minor version number. */
 424    /*@} */
 425
 426    /**
 427     * Number of threads we're currently current in.
 428     */
 429    unsigned long thread_refcount;
 430
 431    char gl_extension_bits[__GL_EXT_BYTES];
 432 };
 433
 434 extern Bool
 435 glx_context_init(struct glx_context *gc,
 436                  struct glx_screen *psc, struct glx_config *fbconfig);
 437
 438 #define __glXSetError(gc,code)  \
 439    if (!(gc)->error) {          \
 440       (gc)->error = code;       \
 441    }
 442
 443 extern void __glFreeAttributeState(struct glx_context *);
 444
 445 /************************************************************************/
 446
 447 /**
 448  * The size of the largest drawing command known to the implementation
 449  * that will use the GLXRender GLX command.  In this case it is
 450  * \c glPolygonStipple.
 451  */
 452 #define __GLX_MAX_SMALL_RENDER_CMD_SIZE 156
 453
 454 /**
 455  * To keep the implementation fast, the code uses a "limit" pointer
 456  * to determine when the drawing command buffer is too full to hold
 457  * another fixed size command.  This constant defines the amount of
 458  * space that must always be available in the drawing command buffer
 459  * at all times for the implementation to work.  It is important that
 460  * the number be just large enough, but not so large as to reduce the
 461  * efficacy of the buffer.  The "+32" is just to keep the code working
 462  * in case somebody counts wrong.
 463  */
 464 #define __GLX_BUFFER_LIMIT_SIZE (__GLX_MAX_SMALL_RENDER_CMD_SIZE + 32)
 465
 466 /**
 467  * This implementation uses a smaller threshold for switching
 468  * to the RenderLarge protocol than the protcol requires so that
 469  * large copies don't occur.
 470  */
 471 #define __GLX_RENDER_CMD_SIZE_LIMIT 4096
 472
 473 /**
 474  * One of these records exists per screen of the display.  It contains
 475  * a pointer to the config data for that screen (if the screen supports GL).
 476  */
 477 struct glx_screen_vtable {
 478    struct glx_context *(*create_context)(struct glx_screen *psc,
 479                                          struct glx_config *config,
 480                                          struct glx_context *shareList,
 481                                          int renderType);
 482
 483    struct glx_context *(*create_context_attribs)(struct glx_screen *psc,
 484                                                  struct glx_config *config,
 485                                                  struct glx_context *shareList,
 486                                                  unsigned num_attrib,
 487                                                  const uint32_t *attribs,
 488                                                  unsigned *error);
 489    int (*query_renderer_integer)(struct glx_screen *psc,
 490                                  int attribute,
 491                                  unsigned int *value);
 492    int (*query_renderer_string)(struct glx_screen *psc,
 493                                 int attribute,
 494                                 const char **value);
 495 };
 496
 497 struct glx_screen
 498 {
 499    const struct glx_screen_vtable *vtable;
 500
 501     /**
 502      * GLX extension string reported by the X-server.
 503      */
 504    const char *serverGLXexts;
 505
 506     /**
 507      * GLX extension string to be reported to applications.  This is the
 508      * set of extensions that the application can actually use.
 509      */
 510    char *effectiveGLXexts;
 511
 512    struct glx_display *display;
 513
 514    Display *dpy;
 515    int scr;
 516
 517 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
 518     /**
 519      * Per screen direct rendering interface functions and data.
 520      */
 521    __GLXDRIscreen *driScreen;
 522 #endif
 523
 524     /**
 525      * Linked list of glx visuals and  fbconfigs for this screen.
 526      */
 527    struct glx_config *visuals, *configs;
 528
 529     /**
 530      * Per-screen dynamic GLX extension tracking.  The \c direct_support
 531      * field only contains enough bits for 64 extensions.  Should libGL
 532      * ever need to track more than 64 GLX extensions, we can safely grow
 533      * this field.  The \c struct glx_screen structure is not used outside
 534      * libGL.
 535      */
 536    /*@{ */
 537    unsigned char direct_support[8];
 538    GLboolean ext_list_first_time;
 539    /*@} */
 540
 541 };
 542
 543 /**
 544  * Per display private data.  One of these records exists for each display
 545  * that is using the OpenGL (GLX) extension.
 546  */
 547 struct glx_display
 548 {
 549    /* The extension protocol codes */
 550    XExtCodes *codes;
 551    struct glx_display *next;
 552
 553     /**
 554      * Back pointer to the display
 555      */
 556    Display *dpy;
 557
 558     /**
 559      * The \c majorOpcode is common to all connections to the same server.
 560      * It is also copied into the context structure.
 561      */
 562    int majorOpcode;
 563
 564     /**
 565      * \name Server Version
 566      *
 567      * Major and minor version returned by the server during initialization.
 568      */
 569    /*@{ */
 570    int majorVersion, minorVersion;
 571    /*@} */
 572
 573     /**
 574      * \name Storage for the servers GLX vendor and versions strings.
 575      *
 576      * These are the same for all screens on this display. These fields will
 577      * be filled in on demand.
 578      */
 579    /*@{ */
 580    const char *serverGLXvendor;
 581    const char *serverGLXversion;
 582    /*@} */
 583
 584     /**
 585      * Configurations of visuals for all screens on this display.
 586      * Also, per screen data which now includes the server \c GLX_EXTENSION
 587      * string.
 588      */
 589    struct glx_screen **screens;
 590
 591    __glxHashTable *glXDrawHash;
 592
 593 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
 594    __glxHashTable *drawHash;
 595
 596     /**
 597      * Per display direct rendering interface functions and data.
 598      */
 599    __GLXDRIdisplay *driswDisplay;
 600    __GLXDRIdisplay *driDisplay;
 601    __GLXDRIdisplay *dri2Display;
 602    __GLXDRIdisplay *dri3Display;
 603 #endif
 604 };
 605
 606 struct glx_drawable {
 607    XID xDrawable;
 608    XID drawable;
 609
 610    uint32_t lastEventSbc;
 611    int64_t eventSbcWrap;
 612 };
 613
 614 extern int
 615 glx_screen_init(struct glx_screen *psc,
 616                 int screen, struct glx_display * priv);
 617 extern void
 618 glx_screen_cleanup(struct glx_screen *psc);
 619
 620 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
 621 extern __GLXDRIdrawable *
 622 dri2GetGlxDrawableFromXDrawableId(Display *dpy, XID id);
 623 #endif
 624
 625 extern GLubyte *__glXFlushRenderBuffer(struct glx_context *, GLubyte *);
 626
 627 extern void __glXSendLargeChunk(struct glx_context * gc, GLint requestNumber,
 628                                 GLint totalRequests,
 629                                 const GLvoid * data, GLint dataLen);
 630
 631 extern void __glXSendLargeCommand(struct glx_context *, const GLvoid *, GLint,
 632                                   const GLvoid *, GLint);
 633
 634 /* Initialize the GLX extension for dpy */
 635 extern struct glx_display *__glXInitialize(Display *);
 636
 637 extern void __glXPreferEGL(int state);
 638
 639 /************************************************************************/
 640
 641 extern int __glXDebug;
 642
 643 /* This is per-thread storage in an MT environment */
 644
 645 extern void __glXSetCurrentContext(struct glx_context * c);
 646
 647 # if defined( GLX_USE_TLS )
 648
 649 extern __thread void *__glX_tls_Context
 650    __attribute__ ((tls_model("initial-exec")));
 651
 652 #  define __glXGetCurrentContext() __glX_tls_Context
 653
 654 # else
 655
 656 extern struct glx_context *__glXGetCurrentContext(void);
 657
 658 # endif /* defined( GLX_USE_TLS ) */
 659
 660 extern void __glXSetCurrentContextNull(void);
 661
 662
 663 /*
 664 ** Global lock for all threads in this address space using the GLX
 665 ** extension
 666 */
 667 extern pthread_mutex_t __glXmutex;
 668 #define __glXLock()    pthread_mutex_lock(&__glXmutex)
 669 #define __glXUnlock()  pthread_mutex_unlock(&__glXmutex)
 670
 671 /*
 672 ** Setup for a command.  Initialize the extension for dpy if necessary.
 673 */
 674 extern CARD8 __glXSetupForCommand(Display * dpy);
 675
 676 /************************************************************************/
 677
 678 /*
 679 ** Data conversion and packing support.
 680 */
 681
 682 extern const GLuint __glXDefaultPixelStore[9];
 683
 684 /* Send an image to the server using RenderLarge. */
 685 extern void __glXSendLargeImage(struct glx_context * gc, GLint compsize, GLint dim,
 686                                 GLint width, GLint height, GLint depth,
 687                                 GLenum format, GLenum type,
 688                                 const GLvoid * src, GLubyte * pc,
 689                                 GLubyte * modes);
 690
 691 /* Return the size, in bytes, of some pixel data */
 692 extern GLint __glImageSize(GLint, GLint, GLint, GLenum, GLenum, GLenum);
 693
 694 /* Return the number of elements per group of a specified format*/
 695 extern GLint __glElementsPerGroup(GLenum format, GLenum type);
 696
 697 /* Return the number of bytes per element, based on the element type (other
 698 ** than GL_BITMAP).
 699 */
 700 extern GLint __glBytesPerElement(GLenum type);
 701
 702 /*
 703 ** Fill the transport buffer with the data from the users buffer,
 704 ** applying some of the pixel store modes (unpack modes) to the data
 705 ** first.  As a side effect of this call, the "modes" field is
 706 ** updated to contain the modes needed by the server to decode the
 707 ** sent data.
 708 */
 709 extern void __glFillImage(struct glx_context *, GLint, GLint, GLint, GLint, GLenum,
 710                           GLenum, const GLvoid *, GLubyte *, GLubyte *);
 711
 712 /* Copy map data with a stride into a packed buffer */
 713 extern void __glFillMap1f(GLint, GLint, GLint, const GLfloat *, GLubyte *);
 714 extern void __glFillMap1d(GLint, GLint, GLint, const GLdouble *, GLubyte *);
 715 extern void __glFillMap2f(GLint, GLint, GLint, GLint, GLint,
 716                           const GLfloat *, GLfloat *);
 717 extern void __glFillMap2d(GLint, GLint, GLint, GLint, GLint,
 718                           const GLdouble *, GLdouble *);
 719
 720 /*
 721 ** Empty an image out of the reply buffer into the clients memory applying
 722 ** the pack modes to pack back into the clients requested format.
 723 */
 724 extern void __glEmptyImage(struct glx_context *, GLint, GLint, GLint, GLint, GLenum,
 725                            GLenum, const GLubyte *, GLvoid *);
 726
 727
 728 /*
 729 ** Allocate and Initialize Vertex Array client state, and free.
 730 */
 731 extern void __glXInitVertexArrayState(struct glx_context *);
 732 extern void __glXFreeVertexArrayState(struct glx_context *);
 733
 734 /*
 735 ** Inform the Server of the major and minor numbers and of the client
 736 ** libraries extension string.
 737 */
 738 extern void __glXClientInfo(Display * dpy, int opcode);
 739
 740 _X_HIDDEN void
 741 __glX_send_client_info(struct glx_display *glx_dpy);
 742
 743 /************************************************************************/
 744
 745 /*
 746 ** Declarations that should be in Xlib
 747 */
 748 #ifdef __GL_USE_OUR_PROTOTYPES
 749 extern void _XFlush(Display *);
 750 extern Status _XReply(Display *, xReply *, int, Bool);
 751 extern void _XRead(Display *, void *, long);
 752 extern void _XSend(Display *, const void *, long);
 753 #endif
 754
 755
 756 extern void __glXInitializeVisualConfigFromTags(struct glx_config * config,
 757                                                 int count, const INT32 * bp,
 758                                                 Bool tagged_only,
 759                                                 Bool fbconfig_style_tags);
 760
 761 extern char *__glXQueryServerString(Display * dpy, int opcode,
 762                                     CARD32 screen, CARD32 name);
 763 extern char *__glXGetString(Display * dpy, int opcode,
 764                             CARD32 screen, CARD32 name);
 765
 766 extern const char __glXGLClientVersion[];
 767 extern const char __glXGLClientExtensions[];
 768
 769 /* Get the unadjusted system time */
 770 extern int __glXGetUST(int64_t * ust);
 771
 772 extern GLboolean __glXGetMscRateOML(Display * dpy, GLXDrawable drawable,
 773                                     int32_t * numerator,
 774                                     int32_t * denominator);
 775
 776 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
 777 extern GLboolean
 778 __glxGetMscRate(struct glx_screen *psc,
 779                 int32_t * numerator, int32_t * denominator);
 780
 781 /* So that dri2.c:DRI2WireToEvent() can access
 782  * glx_info->codes->first_event */
 783 XExtDisplayInfo *__glXFindDisplay (Display *dpy);
 784
 785 extern void
 786 GarbageCollectDRIDrawables(struct glx_screen *psc);
 787
 788 extern __GLXDRIdrawable *
 789 GetGLXDRIDrawable(Display *dpy, GLXDrawable drawable);
 790 #endif
 791
 792 extern struct glx_screen *GetGLXScreenConfigs(Display * dpy, int scrn);
 793
 794 #ifdef GLX_USE_APPLEGL
 795 extern struct glx_screen *
 796 applegl_create_screen(int screen, struct glx_display * priv);
 797
 798 extern struct glx_context *
 799 applegl_create_context(struct glx_screen *psc,
 800                         struct glx_config *mode,
 801                         struct glx_context *shareList, int renderType);
 802
 803 extern int
 804 applegl_create_display(struct glx_display *display);
 805 #endif
 806
 807 extern Bool validate_renderType_against_config(const struct glx_config *config,
 808                                                int renderType);
 809
 810
 811 extern struct glx_drawable *GetGLXDrawable(Display *dpy, GLXDrawable drawable);
 812 extern int InitGLXDrawable(Display *dpy, struct glx_drawable *glxDraw,
 813                            XID xDrawable, GLXDrawable drawable);
 814 extern void DestroyGLXDrawable(Display *dpy, GLXDrawable drawable);
 815
 816 extern struct glx_context dummyContext;
 817
 818 extern struct glx_screen *
 819 indirect_create_screen(int screen, struct glx_display * priv);
 820 extern struct glx_context *
 821 indirect_create_context(struct glx_screen *psc,
 822                         struct glx_config *mode,
 823                         struct glx_context *shareList, int renderType);
 824 extern struct glx_context *
 825 indirect_create_context_attribs(struct glx_screen *base,
 826                                 struct glx_config *config_base,
 827                                 struct glx_context *shareList,
 828                                 unsigned num_attribs,
 829                                 const uint32_t *attribs,
 830                                 unsigned *error);
 831
 832 #ifdef __cplusplus
 833 }
 834 #endif
 835
 836 #endif /* !__GLX_client_h__ */