glxclient.h revision ad919c30df71bc191be6f107385638b456da6a0f
1ef8225444452a1486bd721f3285301fe84643b00Stephen Hines/* 2ef8225444452a1486bd721f3285301fe84643b00Stephen Hines** License Applicability. Except to the extent portions of this file are 3ef8225444452a1486bd721f3285301fe84643b00Stephen Hines** made subject to an alternative license as permitted in the SGI Free 4ef8225444452a1486bd721f3285301fe84643b00Stephen Hines** Software License B, Version 1.1 (the "License"), the contents of this 5ef8225444452a1486bd721f3285301fe84643b00Stephen Hines** file are subject only to the provisions of the License. You may not use 6ef8225444452a1486bd721f3285301fe84643b00Stephen Hines** this file except in compliance with the License. You may obtain a copy 7ef8225444452a1486bd721f3285301fe84643b00Stephen Hines** of the License at Silicon Graphics, Inc., attn: Legal Services, 1600 8ef8225444452a1486bd721f3285301fe84643b00Stephen Hines** Amphitheatre Parkway, Mountain View, CA 94043-1351, or at: 9ef8225444452a1486bd721f3285301fe84643b00Stephen Hines** 10ef8225444452a1486bd721f3285301fe84643b00Stephen Hines** http://oss.sgi.com/projects/FreeB 11ef8225444452a1486bd721f3285301fe84643b00Stephen Hines** 12ef8225444452a1486bd721f3285301fe84643b00Stephen Hines** Note that, as provided in the License, the Software is distributed on an 13ef8225444452a1486bd721f3285301fe84643b00Stephen Hines** "AS IS" basis, with ALL EXPRESS AND IMPLIED WARRANTIES AND CONDITIONS 14ef8225444452a1486bd721f3285301fe84643b00Stephen Hines** DISCLAIMED, INCLUDING, WITHOUT LIMITATION, ANY IMPLIED WARRANTIES AND 15ef8225444452a1486bd721f3285301fe84643b00Stephen Hines** CONDITIONS OF MERCHANTABILITY, SATISFACTORY QUALITY, FITNESS FOR A 16ef8225444452a1486bd721f3285301fe84643b00Stephen Hines** PARTICULAR PURPOSE, AND NON-INFRINGEMENT. 17ef8225444452a1486bd721f3285301fe84643b00Stephen Hines** 18ef8225444452a1486bd721f3285301fe84643b00Stephen Hines** Original Code. The Original Code is: OpenGL Sample Implementation, 19ef8225444452a1486bd721f3285301fe84643b00Stephen Hines** Version 1.2.1, released January 26, 2000, developed by Silicon Graphics, 20ef8225444452a1486bd721f3285301fe84643b00Stephen Hines** Inc. The Original Code is Copyright (c) 1991-2000 Silicon Graphics, Inc. 21ef8225444452a1486bd721f3285301fe84643b00Stephen Hines** Copyright in any portions created by third parties is as indicated 22ef8225444452a1486bd721f3285301fe84643b00Stephen Hines** elsewhere herein. All Rights Reserved. 23ef8225444452a1486bd721f3285301fe84643b00Stephen Hines** 24ef8225444452a1486bd721f3285301fe84643b00Stephen Hines** Additional Notice Provisions: The application programming interfaces 25ef8225444452a1486bd721f3285301fe84643b00Stephen Hines** established by SGI in conjunction with the Original Code are The 26ef8225444452a1486bd721f3285301fe84643b00Stephen Hines** OpenGL(R) Graphics System: A Specification (Version 1.2.1), released 27** April 1, 1999; The OpenGL(R) Graphics System Utility Library (Version 28** 1.3), released November 4, 1998; and OpenGL(R) Graphics with the X 29** Window System(R) (Version 1.3), released October 19, 1998. This software 30** was created using the OpenGL(R) version 1.2.1 Sample Implementation 31** published by SGI, but has not been independently verified as being 32** compliant with the OpenGL(R) version 1.2.1 Specification. 33*/ 34/* $XFree86: xc/lib/GL/glx/glxclient.h,v 1.21 2004/02/09 23:46:31 alanh Exp $ */ 35 36/** 37 * \file glxclient.h 38 * Direct rendering support added by Precision Insight, Inc. 39 * 40 * \author Kevin E. Martin <kevin@precisioninsight.com> 41 */ 42 43#ifndef _GLX_client_h_ 44#define _GLX_client_h_ 45#define NEED_REPLIES 46#define NEED_EVENTS 47#include <X11/Xproto.h> 48#include <X11/Xlibint.h> 49#define GLX_GLXEXT_PROTOTYPES 50#include <GL/glx.h> 51#include <GL/glxext.h> 52#include <string.h> 53#include <stdlib.h> 54#include <stdio.h> 55#ifdef WIN32 56#include <stdint.h> 57#endif 58#include "GL/glxint.h" 59#include "GL/glxproto.h" 60#include "GL/internal/glcore.h" 61#include "glapitable.h" 62#ifdef NEED_GL_FUNCS_WRAPPED 63#include "indirect.h" 64#endif 65#ifdef XTHREADS 66#include "Xthreads.h" 67#endif 68#ifdef GLX_BUILT_IN_XMESA 69#include "realglx.h" /* just silences prototype warnings */ 70#endif 71 72#define GLX_MAJOR_VERSION 1 /* current version numbers */ 73#define GLX_MINOR_VERSION 4 74 75#define __GLX_MAX_TEXTURE_UNITS 32 76 77typedef struct __GLXcontextRec __GLXcontext; 78typedef struct __GLXdisplayPrivateRec __GLXdisplayPrivate; 79typedef struct _glapi_table __GLapi; 80 81/************************************************************************/ 82 83#ifdef GLX_DIRECT_RENDERING 84 85#include <GL/internal/dri_interface.h> 86 87typedef void *(*CreateScreenFunc)(Display *dpy, int scrn, __DRIscreen *psc, 88 int numConfigs, __GLXvisualConfig *config); 89 90typedef void *(*CreateNewScreenFunc)(Display *dpy, int scrn, __DRIscreen *psc, 91 const __GLcontextModes * modes, const __DRIversion * ddx_version, 92 const __DRIversion * dri_version, const __DRIversion * drm_version, 93 const __DRIframebuffer * frame_buffer, void * pSAREA, 94 int fd, int internal_api_version, __GLcontextModes ** driver_modes); 95 96 97/** 98 * Display dependent methods. This structure is initialized during the 99 * \c driCreateDisplay call. 100 */ 101struct __DRIdisplayRec { 102 /** 103 * Method to destroy the private DRI display data. 104 */ 105 void (*destroyDisplay)(Display *dpy, void *displayPrivate); 106 107 /** 108 * Methods to create the private DRI screen data and initialize the 109 * screen dependent methods. 110 * This is an array [indexed by screen number] of function pointers. 111 * 112 * \deprecated This array of function pointers has been replaced by 113 * \c __DRIdisplayRec::createNewScreen. 114 * \sa __DRIdisplayRec::createNewScreen 115 */ 116 CreateScreenFunc * createScreen; 117 118 /** 119 * Opaque pointer to private per display direct rendering data. 120 * \c NULL if direct rendering is not supported on this display. 121 */ 122 struct __DRIdisplayPrivateRec *private; 123 124 /** 125 * Array of pointers to methods to create and initialize the private DRI 126 * screen data. 127 * 128 * \sa __DRIdisplayRec::createScreen 129 */ 130 CreateNewScreenFunc * createNewScreen; 131}; 132 133 134/* 135** We keep a linked list of these structures, one per DRI device driver. 136*/ 137struct __DRIdriverRec { 138 const char *name; 139 void *handle; 140 CreateScreenFunc createScreenFunc; 141 CreateNewScreenFunc createNewScreenFunc; 142 struct __DRIdriverRec *next; 143}; 144 145/* 146** Function to create and DRI display data and initialize the display 147** dependent methods. 148*/ 149extern void *driCreateDisplay(Display *dpy, __DRIdisplay *pdisp); 150 151extern __DRIdriver *driGetDriver(Display *dpy, int scrNum); 152 153extern void DRI_glXUseXFont( Font font, int first, int count, int listbase ); 154 155/* 156** Functions to obtain driver configuration information from a direct 157** rendering client application 158*/ 159extern const char *glXGetScreenDriver (Display *dpy, int scrNum); 160 161extern const char *glXGetDriverConfig (const char *driverName); 162 163#endif 164 165/************************************************************************/ 166 167#define __GL_CLIENT_ATTRIB_STACK_DEPTH 16 168 169typedef struct __GLXpixelStoreModeRec { 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/* The next 3 structures are deprecated. Client state is no longer tracked 182 * using them. They only remain to maintain the layout / structure offset of 183 * __GLXcontextRec. In XFree86 5.0 they will be removed altogether. 184 */ 185 186typedef struct __GLXvertexArrayPointerStateRecDEPRECATED { 187 GLboolean enable; 188 void (*proc)(const void *); 189 const GLubyte *ptr; 190 GLsizei skip; 191 GLint size; 192 GLenum type; 193 GLsizei stride; 194} __GLXvertexArrayPointerStateDEPRECATED; 195 196typedef struct __GLXvertArrayStateRecDEPRECATED { 197 __GLXvertexArrayPointerStateDEPRECATED vertex; 198 __GLXvertexArrayPointerStateDEPRECATED normal; 199 __GLXvertexArrayPointerStateDEPRECATED color; 200 __GLXvertexArrayPointerStateDEPRECATED index; 201 __GLXvertexArrayPointerStateDEPRECATED texCoord[__GLX_MAX_TEXTURE_UNITS]; 202 __GLXvertexArrayPointerStateDEPRECATED edgeFlag; 203 GLint maxElementsVertices; 204 GLint maxElementsIndices; 205 GLint activeTexture; 206} __GLXvertArrayStateDEPRECATED; 207 208typedef struct __GLXattributeRecDEPRECATED { 209 GLuint mask; 210 211 /* 212 ** Pixel storage state. Most of the pixel store mode state is kept 213 ** here and used by the client code to manage the packing and 214 ** unpacking of data sent to/received from the server. 215 */ 216 __GLXpixelStoreMode storePack, storeUnpack; 217 218 /* 219 ** Vertex Array storage state. The vertex array component 220 ** state is stored here and is used to manage the packing of 221 ** DrawArrays data sent to the server. 222 */ 223 __GLXvertArrayStateDEPRECATED vertArray; 224} __GLXattributeDEPRECATED; 225 226typedef struct __GLXvertexArrayPointerStateRec { 227 void (*proc)(const void *); 228 void (*mtex_proc)(GLenum, const void *); 229 const GLubyte *ptr; 230 GLsizei skip; 231 GLint size; 232 GLenum type; 233 GLsizei stride; 234} __GLXvertexArrayPointerState; 235 236/** 237 * Define which entries of \c __GLXvertArrayState::arrays match which 238 * vertex arrays in the client-state vector. These are only the one-of 239 * arrays. See the \c __GLXvertArrayState::arrays documentation for more 240 * details. 241 * 242 * \sa __GLXvertArrayState 243 */ 244enum { 245 edgeFlag_ARRAY, /**< \c GL_EDGE_FLAG_ARRAY */ 246 index_ARRAY, /**< \c GL_INDEX_ARRAY */ 247 fogCoord_ARRAY, /**< \c GL_FOG_COORD_ARRAY */ 248 secondaryColor_ARRAY, /**< \c GL_SECONDARY_COLOR_ARRAY */ 249 color_ARRAY, /**< \c GL_COLOR_ARRAY */ 250 normal_ARRAY, /**< \c GL_NORMAL_ARRAY */ 251 252 /** 253 * \c GL_VERTEX_ARRAY \b must be last! All of the code for emitting arrays 254 * and array elements is written based on the assumption that the vertex 255 * array is last. 256 */ 257 vertex_ARRAY, 258 259 __GLX_MAX_ARRAYS /**< Place holder entry. */ 260}; 261 262#define ENABLE_ARRAY(state,a) \ 263 do { (state)->vertArray.enables |= (1U << (a ## _ARRAY)); } while( 0 ) 264#define DISABLE_ARRAY(state,a) \ 265 do { (state)->vertArray.enables &= ~(1U << (a ## _ARRAY)); } while( 0 ) 266#define IS_ARRAY_ENABLED_BY_INDEX(state, i) \ 267 (((state)->vertArray.enables & (1U << (i))) != 0) 268#define IS_ARRAY_ENABLED(state, a) \ 269 IS_ARRAY_ENABLED_BY_INDEX(state, a ## _ARRAY) 270 271#define ENABLE_TEXARRAY(state,a) \ 272 do { (state)->vertArray.texture_enables |= (1U << a); } while( 0 ) 273#define DISABLE_TEXARRAY(state,a) \ 274 do { (state)->vertArray.texture_enables &= ~(1U << a); } while( 0 ) 275#define IS_TEXARRAY_ENABLED(state, a) \ 276 (((state)->vertArray.texture_enables & (1U << a)) != 0) 277 278/** 279 * Client-side vertex array state. 280 */ 281typedef struct __GLXvertArrayStateRec { 282 /** 283 * Which client-side arrays are enabled? These are the flag bits for 284 * all of the non-texture coordinate arrays. 285 */ 286 GLuint enables; 287 288 /** 289 * Which of the texture coordinate arrays are enabled? 290 */ 291 GLuint texture_enables; 292 293 /** 294 * State for "one-of" arrays. These are the arrays, such as 295 * GL_COLOR_ARRAY or GL_FOG_COORD_ARRAY for which there is only one 296 * array. There are also "many-of" arrays, such as 297 * GL_TEXTURE_COORD_ARRAY. 298 */ 299 __GLXvertexArrayPointerState arrays[__GLX_MAX_ARRAYS]; 300 301 __GLXvertexArrayPointerState texCoord[__GLX_MAX_TEXTURE_UNITS]; 302 303 GLint maxElementsVertices; 304 GLint maxElementsIndices; 305 GLint activeTexture; 306} __GLXvertArrayState; 307 308typedef struct __GLXattributeRec { 309 GLuint mask; 310 311 /* 312 ** Pixel storage state. Most of the pixel store mode state is kept 313 ** here and used by the client code to manage the packing and 314 ** unpacking of data sent to/received from the server. 315 */ 316 __GLXpixelStoreMode storePack, storeUnpack; 317 318 /* 319 ** Vertex Array storage state. The vertex array component 320 ** state is stored here and is used to manage the packing of 321 ** DrawArrays data sent to the server. 322 */ 323 __GLXvertArrayState vertArray; 324 325 /** 326 * Is EXT_vertex_array / GL 1.1 DrawArrays protocol specifically 327 * disabled? 328 */ 329 GLboolean NoDrawArraysProtocol; 330} __GLXattribute; 331 332typedef struct __GLXattributeMachineRec { 333 __GLXattribute *stack[__GL_CLIENT_ATTRIB_STACK_DEPTH]; 334 __GLXattribute **stackPointer; 335} __GLXattributeMachine; 336 337/** 338 * GLX state that needs to be kept on the client. One of these records 339 * exist for each context that has been made current by this client. 340 */ 341struct __GLXcontextRec { 342 /** 343 * \name Drawing command buffer. 344 * 345 * Drawing commands are packed into this buffer before being sent as a 346 * single GLX protocol request. The buffer is sent when it overflows or 347 * is flushed by \c __glXFlushRenderBuffer. \c pc is the next location 348 * in the buffer to be filled. \c limit is described above in the buffer 349 * slop discussion. 350 * 351 * Commands that require large amounts of data to be transfered will 352 * also use this buffer to hold a header that describes the large 353 * command. 354 * 355 * These must be the first 6 fields since they are static initialized 356 * in the dummy context in glxext.c 357 */ 358 /*@{*/ 359 GLubyte *buf; 360 GLubyte *pc; 361 GLubyte *limit; 362 GLubyte *bufEnd; 363 GLint bufSize; 364 /*@}*/ 365 366 /** 367 * The XID of this rendering context. When the context is created a 368 * new XID is allocated. This is set to None when the context is 369 * destroyed but is still current to some thread. In this case the 370 * context will be freed on next MakeCurrent. 371 */ 372 XID xid; 373 374 /** 375 * The XID of the \c shareList context. 376 */ 377 XID share_xid; 378 379 /** 380 * Visual id. 381 * 382 * \deprecated 383 * This filed has been largely been replaced by the \c mode field, but 384 * the work is not quite done. 385 */ 386 VisualID vid; 387 388 /** 389 * Screen number. 390 */ 391 GLint screen; 392 393 /** 394 * \c GL_TRUE if the context was created with ImportContext, which 395 * means the server-side context was created by another X client. 396 */ 397 GLboolean imported; 398 399 /** 400 * The context tag returned by MakeCurrent when this context is made 401 * current. This tag is used to identify the context that a thread has 402 * current so that proper server context management can be done. It is 403 * used for all context specific commands (i.e., \c Render, \c RenderLarge, 404 * \c WaitX, \c WaitGL, \c UseXFont, and \c MakeCurrent (for the old 405 * context)). 406 */ 407 GLXContextTag currentContextTag; 408 409 /** 410 * \name Rendering mode 411 * 412 * The rendering mode is kept on the client as well as the server. 413 * When \c glRenderMode is called, the buffer associated with the 414 * previous rendering mode (feedback or select) is filled. 415 */ 416 /*@{*/ 417 GLenum renderMode; 418 GLfloat *feedbackBuf; 419 GLuint *selectBuf; 420 /*@}*/ 421 422 /** 423 * This is \c GL_TRUE if the pixel unpack modes are such that an image 424 * can be unpacked from the clients memory by just copying. It may 425 * still be true that the server will have to do some work. This 426 * just promises that a straight copy will fetch the correct bytes. 427 */ 428 GLboolean fastImageUnpack; 429 430 /** 431 * Fill newImage with the unpacked form of \c oldImage getting it 432 * ready for transport to the server. 433 */ 434 void (*fillImage)(__GLXcontext*, GLint, GLint, GLint, GLint, GLenum, 435 GLenum, const GLvoid*, GLubyte*, GLubyte*); 436 437 /** 438 * \name Client side attribs. 439 */ 440 /*@{*/ 441 __GLXattributeDEPRECATED stateDEPRECATED; 442 __GLXattributeMachine attributes; 443 /*@}*/ 444 445 /** 446 * Client side error code. This is set when client side gl API 447 * routines need to set an error because of a bad enumerant or 448 * running out of memory, etc. 449 */ 450 GLenum error; 451 452 /** 453 * Whether this context does direct rendering. 454 */ 455 Bool isDirect; 456 457 /** 458 * \c dpy of current display for this context. Will be \c NULL if not 459 * current to any display, or if this is the "dummy context". 460 */ 461 Display *currentDpy; 462 463 /** 464 * The current drawable for this context. Will be None if this 465 * context is not current to any drawable. currentReadable is below. 466 */ 467 GLXDrawable currentDrawable; 468 469 /** 470 * \name GL Constant Strings 471 * 472 * Constant strings that describe the server implementation 473 * These pertain to GL attributes, not to be confused with 474 * GLX versioning attributes. 475 */ 476 /*@{*/ 477 GLubyte *vendor; 478 GLubyte *renderer; 479 GLubyte *version; 480 GLubyte *extensions; 481 /*@}*/ 482 483 /** 484 * Record the dpy this context was created on for later freeing 485 */ 486 Display *createDpy; 487 488 /** 489 * Maximum small render command size. This is the smaller of 64k and 490 * the size of the above buffer. 491 */ 492 GLint maxSmallRenderCommandSize; 493 494 /** 495 * Major opcode for the extension. Copied here so a lookup isn't 496 * needed. 497 */ 498 GLint majorOpcode; 499 500#ifdef GLX_DIRECT_RENDERING 501 /** 502 * Per context direct rendering interface functions and data. 503 */ 504 __DRIcontext driContext; 505#endif 506 507 /** 508 * \c GLXFBConfigID used to create this context. May be \c None. This 509 * field has been replaced by the \c mode field. 510 * 511 * \since Internal API version 20030317. 512 * 513 * \deprecated 514 * This filed has been largely been replaced by the \c mode field, but 515 * the work is not quite done. 516 */ 517 GLXFBConfigID fbconfigID; 518 519 /** 520 * The current read-drawable for this context. Will be None if this 521 * context is not current to any drawable. 522 * 523 * \since Internal API version 20030606. 524 */ 525 GLXDrawable currentReadable; 526 527 /** 528 * Pointer to client-state data that is private to libGL. This is only 529 * used for indirect rendering contexts. 530 * 531 * No internal API version change was made for this change. Client-side 532 * drivers should NEVER use this data or even care that it exists. 533 */ 534 void * client_state_private; 535 536 /** 537 * Stored value for \c glXQueryContext attribute \c GLX_RENDER_TYPE. 538 */ 539 int renderType; 540 541 /** 542 * \name Raw server GL version 543 * 544 * True core GL version supported by the server. This is the raw value 545 * returned by the server, and it may not reflect what is actually 546 * supported (or reported) by the client-side library. 547 */ 548 /*@{*/ 549 int server_major; /**< Major version number. */ 550 int server_minor; /**< Minor version number. */ 551 /*@}*/ 552}; 553 554#define __glXSetError(gc,code) \ 555 if (!(gc)->error) { \ 556 (gc)->error = code; \ 557 } 558 559extern void __glFreeAttributeState(__GLXcontext *); 560 561/************************************************************************/ 562 563/** 564 * The size of the largest drawing command known to the implementation 565 * that will use the GLXRender GLX command. In this case it is 566 * \c glPolygonStipple. 567 */ 568#define __GLX_MAX_SMALL_RENDER_CMD_SIZE 156 569 570/** 571 * To keep the implementation fast, the code uses a "limit" pointer 572 * to determine when the drawing command buffer is too full to hold 573 * another fixed size command. This constant defines the amount of 574 * space that must always be available in the drawing command buffer 575 * at all times for the implementation to work. It is important that 576 * the number be just large enough, but not so large as to reduce the 577 * efficacy of the buffer. The "+32" is just to keep the code working 578 * in case somebody counts wrong. 579 */ 580#define __GLX_BUFFER_LIMIT_SIZE (__GLX_MAX_SMALL_RENDER_CMD_SIZE + 32) 581 582/** 583 * This implementation uses a smaller threshold for switching 584 * to the RenderLarge protocol than the protcol requires so that 585 * large copies don't occur. 586 */ 587#define __GLX_RENDER_CMD_SIZE_LIMIT 4096 588 589/** 590 * One of these records exists per screen of the display. It contains 591 * a pointer to the config data for that screen (if the screen supports GL). 592 */ 593typedef struct __GLXscreenConfigsRec { 594 /** 595 * GLX visuals formated as \c __GLXvisualConfig structures. 596 */ 597 /*@{*/ 598 __GLXvisualConfig * old_configs; 599 int numOldConfigs; 600 /*@}*/ 601 602 /** 603 * GLX extension string reported by the X-server. 604 */ 605 const char *serverGLXexts; 606 607 /** 608 * GLX extension string to be reported to applications. This is the 609 * set of extensions that the application can actually use. 610 */ 611 char *effectiveGLXexts; 612 613#ifdef GLX_DIRECT_RENDERING 614 /** 615 * Per screen direct rendering interface functions and data. 616 */ 617 __DRIscreen driScreen; 618#endif 619 620 /** 621 * Linked list of configurations for this screen. This is intended to 622 * be a superset of \c old_configs. 623 */ 624 __GLcontextModes *configs; 625 /** 626 * Per-screen dynamic GLX extension tracking. The \c direct_support 627 * field only contains enough bits for 64 extensions. Should libGL 628 * ever need to track more than 64 GLX extensions, we can safely grow 629 * this field. The \c __GLXscreenConfigs structure is not used outside 630 * libGL. 631 */ 632 /*@{*/ 633 unsigned char direct_support[8]; 634 GLboolean ext_list_first_time; 635 /*@}*/ 636 637} __GLXscreenConfigs; 638 639/** 640 * Per display private data. One of these records exists for each display 641 * that is using the OpenGL (GLX) extension. 642 */ 643struct __GLXdisplayPrivateRec { 644 /** 645 * Back pointer to the display 646 */ 647 Display *dpy; 648 649 /** 650 * The \c majorOpcode is common to all connections to the same server. 651 * It is also copied into the context structure. 652 */ 653 int majorOpcode; 654 655 /** 656 * \name Server Version 657 * 658 * Major and minor version returned by the server during initialization. 659 */ 660 /*@{*/ 661 int majorVersion, minorVersion; 662 /*@}*/ 663 664 /** 665 * \name Storage for the servers GLX vendor and versions strings. 666 * 667 * These are the same for all screens on this display. These fields will 668 * be filled in on demand. 669 */ 670 /*@{*/ 671 const char *serverGLXvendor; 672 const char *serverGLXversion; 673 /*@}*/ 674 675 /** 676 * Configurations of visuals for all screens on this display. 677 * Also, per screen data which now includes the server \c GLX_EXTENSION 678 * string. 679 */ 680 __GLXscreenConfigs *screenConfigs; 681 682#ifdef GLX_DIRECT_RENDERING 683 /** 684 * Per display direct rendering interface functions and data. 685 */ 686 __DRIdisplay driDisplay; 687#endif 688}; 689 690void __glXFreeContext(__GLXcontext*); 691 692extern GLubyte *__glXFlushRenderBuffer(__GLXcontext*, GLubyte*); 693 694extern void __glXSendLargeChunk(__GLXcontext *gc, GLint requestNumber, 695 GLint totalRequests, 696 const GLvoid * data, GLint dataLen); 697 698extern void __glXSendLargeCommand(__GLXcontext *, const GLvoid *, GLint, 699 const GLvoid *, GLint); 700 701/* Initialize the GLX extension for dpy */ 702extern __GLXdisplayPrivate *__glXInitialize(Display*); 703 704/************************************************************************/ 705 706extern int __glXDebug; 707 708/* This is per-thread storage in an MT environment */ 709#if defined(GLX_DIRECT_RENDERING) && defined(XTHREADS) 710extern __GLXcontext *__glXGetCurrentContext(void); 711extern void __glXSetCurrentContext(__GLXcontext *c); 712#else 713extern __GLXcontext *__glXcurrentContext; 714#define __glXGetCurrentContext() __glXcurrentContext 715#define __glXSetCurrentContext(gc) __glXcurrentContext = gc 716#endif 717 718 719/* 720** Global lock for all threads in this address space using the GLX 721** extension 722*/ 723#if defined(GLX_DIRECT_RENDERING) && defined(XTHREADS) 724extern xmutex_rec __glXmutex; 725#define __glXLock() xmutex_lock(&__glXmutex) 726#define __glXUnlock() xmutex_unlock(&__glXmutex) 727#else 728#define __glXLock() 729#define __glXUnlock() 730#endif 731 732/* 733** Setup for a command. Initialize the extension for dpy if necessary. 734*/ 735extern CARD8 __glXSetupForCommand(Display *dpy); 736 737/************************************************************************/ 738 739/* 740** Data conversion and packing support. 741*/ 742 743/* Return the size, in bytes, of some pixel data */ 744extern GLint __glImageSize(GLint, GLint, GLint, GLenum, GLenum); 745 746/* Return the number of elements per group of a specified format*/ 747extern GLint __glElementsPerGroup(GLenum format, GLenum type); 748 749/* Return the number of bytes per element, based on the element type (other 750** than GL_BITMAP). 751*/ 752extern GLint __glBytesPerElement(GLenum type); 753 754/* Return the k value for a given map target */ 755extern GLint __glEvalComputeK(GLenum); 756 757/* 758** Fill the transport buffer with the data from the users buffer, 759** applying some of the pixel store modes (unpack modes) to the data 760** first. As a side effect of this call, the "modes" field is 761** updated to contain the modes needed by the server to decode the 762** sent data. 763*/ 764extern void __glFillImage(__GLXcontext*, GLint, GLint, GLint, GLint, GLenum, 765 GLenum, const GLvoid*, GLubyte*, GLubyte*); 766 767/* Copy map data with a stride into a packed buffer */ 768extern void __glFillMap1f(GLint, GLint, GLint, const GLfloat *, GLubyte *); 769extern void __glFillMap1d(GLint, GLint, GLint, const GLdouble *, GLubyte *); 770extern void __glFillMap2f(GLint, GLint, GLint, GLint, GLint, 771 const GLfloat *, GLfloat *); 772extern void __glFillMap2d(GLint, GLint, GLint, GLint, GLint, 773 const GLdouble *, GLdouble *); 774 775/* 776** Empty an image out of the reply buffer into the clients memory applying 777** the pack modes to pack back into the clients requested format. 778*/ 779extern void __glEmptyImage(__GLXcontext*, GLint, GLint, GLint, GLint, GLenum, 780 GLenum, const GLubyte *, GLvoid *); 781 782 783/* 784** Allocate and Initialize Vertex Array client state 785*/ 786extern void __glXInitVertexArrayState(__GLXcontext*); 787 788/* 789** Inform the Server of the major and minor numbers and of the client 790** libraries extension string. 791*/ 792extern void __glXClientInfo ( Display *dpy, int opcode ); 793 794/************************************************************************/ 795 796/* 797** Declarations that should be in Xlib 798*/ 799#ifdef __GL_USE_OUR_PROTOTYPES 800extern void _XFlush(Display*); 801extern Status _XReply(Display*, xReply*, int, Bool); 802extern void _XRead(Display*, void*, long); 803extern void _XSend(Display*, const void*, long); 804#endif 805 806 807/* 808** GLX_BUILT_IN_XMESA controls whether libGL has a built-in verions of 809** Mesa that can render to non-GLX displays. 810*/ 811#ifdef GLX_BUILT_IN_XMESA 812#define GLX_PREFIX(function) _real_##function 813#else 814#define GLX_PREFIX(function) function 815#endif 816 817 818extern void __glXInitializeVisualConfigFromTags( __GLcontextModes *config, 819 int count, const INT32 *bp, Bool tagged_only, Bool fbconfig_style_tags ); 820 821extern char * __glXGetStringFromServer( Display * dpy, int opcode, 822 CARD32 glxCode, CARD32 for_whom, CARD32 name ); 823 824extern char *__glXstrdup(const char *str); 825 826 827extern const char __glXGLClientVersion[]; 828extern const char __glXGLClientExtensions[]; 829 830/* Determine the internal API version */ 831extern int __glXGetInternalVersion(void); 832 833/* Get the unadjusted system time */ 834extern int __glXGetUST( int64_t * ust ); 835 836#endif /* !__GLX_client_h__ */ 837