1/* 2 * Mesa 3-D graphics library 3 * 4 * Copyright (C) 1999-2007 Brian Paul All Rights Reserved. 5 * Copyright (C) 2009 VMware, Inc. All Rights Reserved. 6 * 7 * Permission is hereby granted, free of charge, to any person obtaining a 8 * copy of this software and associated documentation files (the "Software"), 9 * to deal in the Software without restriction, including without limitation 10 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 11 * and/or sell copies of the Software, and to permit persons to whom the 12 * Software is furnished to do so, subject to the following conditions: 13 * 14 * The above copyright notice and this permission notice shall be included 15 * 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 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR 21 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 22 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 23 * OTHER DEALINGS IN THE SOFTWARE. 24 */ 25 26 27/** 28 * "Fake" GLX API implemented in terms of the XMesa*() functions. 29 */ 30 31 32 33#define GLX_GLXEXT_PROTOTYPES 34#include "GL/glx.h" 35 36#include <stdio.h> 37#include <string.h> 38#include <X11/Xmd.h> 39#include <GL/glxproto.h> 40 41#include "xm_api.h" 42#include "main/imports.h" 43#include "main/errors.h" 44#include "util/u_math.h" 45 46/* An "Atrribs/Attribs" typo was fixed in glxproto.h in Nov 2014. 47 * This is in case we don't have the updated header. 48 */ 49#if !defined(X_GLXCreateContextAttribsARB) && \ 50 defined(X_GLXCreateContextAtrribsARB) 51#define X_GLXCreateContextAttribsARB X_GLXCreateContextAtrribsARB 52#endif 53 54/* This indicates the client-side GLX API and GLX encoder version. */ 55#define CLIENT_MAJOR_VERSION 1 56#define CLIENT_MINOR_VERSION 4 /* but don't have 1.3's pbuffers, etc yet */ 57 58/* This indicates the server-side GLX decoder version. 59 * GLX 1.4 indicates OpenGL 1.3 support 60 */ 61#define SERVER_MAJOR_VERSION 1 62#define SERVER_MINOR_VERSION 4 63 64/* Who implemented this GLX? */ 65#define VENDOR "Brian Paul" 66 67#define EXTENSIONS \ 68 "GLX_MESA_copy_sub_buffer " \ 69 "GLX_MESA_pixmap_colormap " \ 70 "GLX_MESA_release_buffers " \ 71 "GLX_ARB_create_context " \ 72 "GLX_ARB_create_context_profile " \ 73 "GLX_ARB_get_proc_address " \ 74 "GLX_EXT_create_context_es_profile " \ 75 "GLX_EXT_create_context_es2_profile " \ 76 "GLX_EXT_texture_from_pixmap " \ 77 "GLX_EXT_visual_info " \ 78 "GLX_EXT_visual_rating " \ 79 /*"GLX_SGI_video_sync "*/ \ 80 "GLX_SGIX_fbconfig " \ 81 "GLX_SGIX_pbuffer " 82 83#define DEFAULT_DIRECT GL_TRUE 84 85 86/** XXX this could be based on gallium's max texture size */ 87#define PBUFFER_MAX_SIZE 16384 88 89 90/** 91 * The GLXContext typedef is defined as a pointer to this structure. 92 */ 93struct __GLXcontextRec 94{ 95 Display *currentDpy; 96 GLboolean isDirect; 97 GLXDrawable currentDrawable; 98 GLXDrawable currentReadable; 99 XID xid; 100 101 XMesaContext xmesaContext; 102}; 103 104 105 106static pipe_tsd ContextTSD; 107 108/** Set current context for calling thread */ 109static void 110SetCurrentContext(GLXContext c) 111{ 112 pipe_tsd_set(&ContextTSD, c); 113} 114 115/** Get current context for calling thread */ 116static GLXContext 117GetCurrentContext(void) 118{ 119 return pipe_tsd_get(&ContextTSD); 120} 121 122 123 124/**********************************************************************/ 125/*** GLX Visual Code ***/ 126/**********************************************************************/ 127 128#define DONT_CARE -1 129 130 131static XMesaVisual *VisualTable = NULL; 132static int NumVisuals = 0; 133 134 135 136/* Macro to handle c_class vs class field name in XVisualInfo struct */ 137#if defined(__cplusplus) || defined(c_plusplus) 138#define CLASS c_class 139#else 140#define CLASS class 141#endif 142 143 144 145/* 146 * Test if the given XVisualInfo is usable for Mesa rendering. 147 */ 148static GLboolean 149is_usable_visual( XVisualInfo *vinfo ) 150{ 151 switch (vinfo->CLASS) { 152 case StaticGray: 153 case GrayScale: 154 /* Any StaticGray/GrayScale visual works in RGB or CI mode */ 155 return GL_TRUE; 156 case StaticColor: 157 case PseudoColor: 158 /* Any StaticColor/PseudoColor visual of at least 4 bits */ 159 if (vinfo->depth>=4) { 160 return GL_TRUE; 161 } 162 else { 163 return GL_FALSE; 164 } 165 case TrueColor: 166 case DirectColor: 167 /* Any depth of TrueColor or DirectColor works in RGB mode */ 168 return GL_TRUE; 169 default: 170 /* This should never happen */ 171 return GL_FALSE; 172 } 173} 174 175 176/* 177 * Given an XVisualInfo and RGB, Double, and Depth buffer flags, save the 178 * configuration in our list of GLX visuals. 179 */ 180static XMesaVisual 181save_glx_visual( Display *dpy, XVisualInfo *vinfo, 182 GLboolean rgbFlag, GLboolean alphaFlag, GLboolean dbFlag, 183 GLboolean stereoFlag, 184 GLint depth_size, GLint stencil_size, 185 GLint accumRedSize, GLint accumGreenSize, 186 GLint accumBlueSize, GLint accumAlphaSize, 187 GLint level, GLint numAuxBuffers, GLuint num_samples ) 188{ 189 GLboolean ximageFlag = GL_TRUE; 190 XMesaVisual xmvis; 191 GLint i; 192 GLboolean comparePointers; 193 194 if (dbFlag) { 195 /* Check if the MESA_BACK_BUFFER env var is set */ 196 char *backbuffer = getenv("MESA_BACK_BUFFER"); 197 if (backbuffer) { 198 if (backbuffer[0]=='p' || backbuffer[0]=='P') { 199 ximageFlag = GL_FALSE; 200 } 201 else if (backbuffer[0]=='x' || backbuffer[0]=='X') { 202 ximageFlag = GL_TRUE; 203 } 204 else { 205 _mesa_warning(NULL, "Mesa: invalid value for MESA_BACK_BUFFER environment variable, using an XImage."); 206 } 207 } 208 } 209 210 if (stereoFlag) { 211 /* stereo not supported */ 212 return NULL; 213 } 214 215 if (stencil_size > 0 && depth_size > 0) 216 depth_size = 24; 217 218 /* Comparing IDs uses less memory but sometimes fails. */ 219 /* XXX revisit this after 3.0 is finished. */ 220 if (getenv("MESA_GLX_VISUAL_HACK")) 221 comparePointers = GL_TRUE; 222 else 223 comparePointers = GL_FALSE; 224 225 /* Force the visual to have an alpha channel */ 226 if (rgbFlag && getenv("MESA_GLX_FORCE_ALPHA")) 227 alphaFlag = GL_TRUE; 228 229 /* First check if a matching visual is already in the list */ 230 for (i=0; i<NumVisuals; i++) { 231 XMesaVisual v = VisualTable[i]; 232 if (v->display == dpy 233 && v->mesa_visual.level == level 234 && v->mesa_visual.numAuxBuffers == numAuxBuffers 235 && v->mesa_visual.samples == num_samples 236 && v->ximage_flag == ximageFlag 237 && v->mesa_visual.rgbMode == rgbFlag 238 && v->mesa_visual.doubleBufferMode == dbFlag 239 && v->mesa_visual.stereoMode == stereoFlag 240 && (v->mesa_visual.alphaBits > 0) == alphaFlag 241 && (v->mesa_visual.depthBits >= depth_size || depth_size == 0) 242 && (v->mesa_visual.stencilBits >= stencil_size || stencil_size == 0) 243 && (v->mesa_visual.accumRedBits >= accumRedSize || accumRedSize == 0) 244 && (v->mesa_visual.accumGreenBits >= accumGreenSize || accumGreenSize == 0) 245 && (v->mesa_visual.accumBlueBits >= accumBlueSize || accumBlueSize == 0) 246 && (v->mesa_visual.accumAlphaBits >= accumAlphaSize || accumAlphaSize == 0)) { 247 /* now either compare XVisualInfo pointers or visual IDs */ 248 if ((!comparePointers && v->visinfo->visualid == vinfo->visualid) 249 || (comparePointers && v->vishandle == vinfo)) { 250 return v; 251 } 252 } 253 } 254 255 /* Create a new visual and add it to the list. */ 256 257 xmvis = XMesaCreateVisual( dpy, vinfo, rgbFlag, alphaFlag, dbFlag, 258 stereoFlag, ximageFlag, 259 depth_size, stencil_size, 260 accumRedSize, accumBlueSize, 261 accumBlueSize, accumAlphaSize, num_samples, level, 262 GLX_NONE_EXT ); 263 if (xmvis) { 264 /* Save a copy of the pointer now so we can find this visual again 265 * if we need to search for it in find_glx_visual(). 266 */ 267 xmvis->vishandle = vinfo; 268 /* Allocate more space for additional visual */ 269 VisualTable = realloc(VisualTable, sizeof(XMesaVisual) * (NumVisuals + 1)); 270 /* add xmvis to the list */ 271 VisualTable[NumVisuals] = xmvis; 272 NumVisuals++; 273 /* XXX minor hack, because XMesaCreateVisual doesn't support an 274 * aux buffers parameter. 275 */ 276 xmvis->mesa_visual.numAuxBuffers = numAuxBuffers; 277 } 278 return xmvis; 279} 280 281 282/** 283 * Return the default number of bits for the Z buffer. 284 * If defined, use the MESA_GLX_DEPTH_BITS env var value. 285 * Otherwise, use the DEFAULT_SOFTWARE_DEPTH_BITS constant. 286 * XXX probably do the same thing for stencil, accum, etc. 287 */ 288static GLint 289default_depth_bits(void) 290{ 291 int zBits; 292 const char *zEnv = getenv("MESA_GLX_DEPTH_BITS"); 293 if (zEnv) 294 zBits = atoi(zEnv); 295 else 296 zBits = 24; 297 return zBits; 298} 299 300static GLint 301default_alpha_bits(void) 302{ 303 int aBits; 304 const char *aEnv = getenv("MESA_GLX_ALPHA_BITS"); 305 if (aEnv) 306 aBits = atoi(aEnv); 307 else 308 aBits = 0; 309 return aBits; 310} 311 312static GLint 313default_accum_bits(void) 314{ 315 return 16; 316} 317 318 319 320/* 321 * Create a GLX visual from a regular XVisualInfo. 322 * This is called when Fake GLX is given an XVisualInfo which wasn't 323 * returned by glXChooseVisual. Since this is the first time we're 324 * considering this visual we'll take a guess at reasonable values 325 * for depth buffer size, stencil size, accum size, etc. 326 * This is the best we can do with a client-side emulation of GLX. 327 */ 328static XMesaVisual 329create_glx_visual( Display *dpy, XVisualInfo *visinfo ) 330{ 331 GLint zBits = default_depth_bits(); 332 GLint accBits = default_accum_bits(); 333 GLboolean alphaFlag = default_alpha_bits() > 0; 334 335 if (is_usable_visual( visinfo )) { 336 /* Configure this visual as RGB, double-buffered, depth-buffered. */ 337 /* This is surely wrong for some people's needs but what else */ 338 /* can be done? They should use glXChooseVisual(). */ 339 return save_glx_visual( dpy, visinfo, 340 GL_TRUE, /* rgb */ 341 alphaFlag, /* alpha */ 342 GL_TRUE, /* double */ 343 GL_FALSE, /* stereo */ 344 zBits, 345 8, /* stencil bits */ 346 accBits, /* r */ 347 accBits, /* g */ 348 accBits, /* b */ 349 accBits, /* a */ 350 0, /* level */ 351 0, /* numAux */ 352 0 /* numSamples */ 353 ); 354 } 355 else { 356 _mesa_warning(NULL, "Mesa: error in glXCreateContext: bad visual\n"); 357 return NULL; 358 } 359} 360 361 362 363/* 364 * Find the GLX visual associated with an XVisualInfo. 365 */ 366static XMesaVisual 367find_glx_visual( Display *dpy, XVisualInfo *vinfo ) 368{ 369 int i; 370 371 /* try to match visual id */ 372 for (i=0;i<NumVisuals;i++) { 373 if (VisualTable[i]->display==dpy 374 && VisualTable[i]->visinfo->visualid == vinfo->visualid) { 375 return VisualTable[i]; 376 } 377 } 378 379 /* if that fails, try to match pointers */ 380 for (i=0;i<NumVisuals;i++) { 381 if (VisualTable[i]->display==dpy && VisualTable[i]->vishandle==vinfo) { 382 return VisualTable[i]; 383 } 384 } 385 386 return NULL; 387} 388 389 390/** 391 * Try to get an X visual which matches the given arguments. 392 */ 393static XVisualInfo * 394get_visual( Display *dpy, int scr, unsigned int depth, int xclass ) 395{ 396 XVisualInfo temp, *vis; 397 long mask; 398 int n; 399 unsigned int default_depth; 400 int default_class; 401 402 mask = VisualScreenMask | VisualDepthMask | VisualClassMask; 403 temp.screen = scr; 404 temp.depth = depth; 405 temp.CLASS = xclass; 406 407 default_depth = DefaultDepth(dpy,scr); 408 default_class = DefaultVisual(dpy,scr)->CLASS; 409 410 if (depth==default_depth && xclass==default_class) { 411 /* try to get root window's visual */ 412 temp.visualid = DefaultVisual(dpy,scr)->visualid; 413 mask |= VisualIDMask; 414 } 415 416 vis = XGetVisualInfo( dpy, mask, &temp, &n ); 417 418 /* In case bits/pixel > 24, make sure color channels are still <=8 bits. 419 * An SGI Infinite Reality system, for example, can have 30bpp pixels: 420 * 10 bits per color channel. Mesa's limited to a max of 8 bits/channel. 421 */ 422 if (vis && depth > 24 && (xclass==TrueColor || xclass==DirectColor)) { 423 if (util_bitcount((GLuint) vis->red_mask ) <= 8 && 424 util_bitcount((GLuint) vis->green_mask) <= 8 && 425 util_bitcount((GLuint) vis->blue_mask ) <= 8) { 426 return vis; 427 } 428 else { 429 free((void *) vis); 430 return NULL; 431 } 432 } 433 434 return vis; 435} 436 437 438/* 439 * Retrieve the value of the given environment variable and find 440 * the X visual which matches it. 441 * Input: dpy - the display 442 * screen - the screen number 443 * varname - the name of the environment variable 444 * Return: an XVisualInfo pointer to NULL if error. 445 */ 446static XVisualInfo * 447get_env_visual(Display *dpy, int scr, const char *varname) 448{ 449 char value[100], type[100]; 450 int depth, xclass = -1; 451 XVisualInfo *vis; 452 453 if (!getenv( varname )) { 454 return NULL; 455 } 456 457 strncpy( value, getenv(varname), 100 ); 458 value[99] = 0; 459 460 sscanf( value, "%s %d", type, &depth ); 461 462 if (strcmp(type,"TrueColor")==0) xclass = TrueColor; 463 else if (strcmp(type,"DirectColor")==0) xclass = DirectColor; 464 else if (strcmp(type,"PseudoColor")==0) xclass = PseudoColor; 465 else if (strcmp(type,"StaticColor")==0) xclass = StaticColor; 466 else if (strcmp(type,"GrayScale")==0) xclass = GrayScale; 467 else if (strcmp(type,"StaticGray")==0) xclass = StaticGray; 468 469 if (xclass>-1 && depth>0) { 470 vis = get_visual( dpy, scr, depth, xclass ); 471 if (vis) { 472 return vis; 473 } 474 } 475 476 _mesa_warning(NULL, "GLX unable to find visual class=%s, depth=%d.", 477 type, depth); 478 479 return NULL; 480} 481 482 483 484/* 485 * Select an X visual which satisfies the RGBA flag and minimum depth. 486 * Input: dpy, 487 * screen - X display and screen number 488 * min_depth - minimum visual depth 489 * preferred_class - preferred GLX visual class or DONT_CARE 490 * Return: pointer to an XVisualInfo or NULL. 491 */ 492static XVisualInfo * 493choose_x_visual( Display *dpy, int screen, int min_depth, 494 int preferred_class ) 495{ 496 XVisualInfo *vis; 497 int xclass, visclass = 0; 498 int depth; 499 500 /* First see if the MESA_RGB_VISUAL env var is defined */ 501 vis = get_env_visual( dpy, screen, "MESA_RGB_VISUAL" ); 502 if (vis) { 503 return vis; 504 } 505 /* Otherwise, search for a suitable visual */ 506 if (preferred_class==DONT_CARE) { 507 for (xclass=0;xclass<6;xclass++) { 508 switch (xclass) { 509 case 0: visclass = TrueColor; break; 510 case 1: visclass = DirectColor; break; 511 case 2: visclass = PseudoColor; break; 512 case 3: visclass = StaticColor; break; 513 case 4: visclass = GrayScale; break; 514 case 5: visclass = StaticGray; break; 515 } 516 if (min_depth==0) { 517 /* start with shallowest */ 518 for (depth=0;depth<=32;depth++) { 519 if (visclass==TrueColor && depth==8) { 520 /* Special case: try to get 8-bit PseudoColor before */ 521 /* 8-bit TrueColor */ 522 vis = get_visual( dpy, screen, 8, PseudoColor ); 523 if (vis) { 524 return vis; 525 } 526 } 527 vis = get_visual( dpy, screen, depth, visclass ); 528 if (vis) { 529 return vis; 530 } 531 } 532 } 533 else { 534 /* start with deepest */ 535 for (depth=32;depth>=min_depth;depth--) { 536 if (visclass==TrueColor && depth==8) { 537 /* Special case: try to get 8-bit PseudoColor before */ 538 /* 8-bit TrueColor */ 539 vis = get_visual( dpy, screen, 8, PseudoColor ); 540 if (vis) { 541 return vis; 542 } 543 } 544 vis = get_visual( dpy, screen, depth, visclass ); 545 if (vis) { 546 return vis; 547 } 548 } 549 } 550 } 551 } 552 else { 553 /* search for a specific visual class */ 554 switch (preferred_class) { 555 case GLX_TRUE_COLOR_EXT: visclass = TrueColor; break; 556 case GLX_DIRECT_COLOR_EXT: visclass = DirectColor; break; 557 case GLX_PSEUDO_COLOR_EXT: visclass = PseudoColor; break; 558 case GLX_STATIC_COLOR_EXT: visclass = StaticColor; break; 559 case GLX_GRAY_SCALE_EXT: visclass = GrayScale; break; 560 case GLX_STATIC_GRAY_EXT: visclass = StaticGray; break; 561 default: return NULL; 562 } 563 if (min_depth==0) { 564 /* start with shallowest */ 565 for (depth=0;depth<=32;depth++) { 566 vis = get_visual( dpy, screen, depth, visclass ); 567 if (vis) { 568 return vis; 569 } 570 } 571 } 572 else { 573 /* start with deepest */ 574 for (depth=32;depth>=min_depth;depth--) { 575 vis = get_visual( dpy, screen, depth, visclass ); 576 if (vis) { 577 return vis; 578 } 579 } 580 } 581 } 582 583 /* didn't find a visual */ 584 return NULL; 585} 586 587 588 589 590/**********************************************************************/ 591/*** Display-related functions ***/ 592/**********************************************************************/ 593 594 595/** 596 * Free all XMesaVisuals which are associated with the given display. 597 */ 598static void 599destroy_visuals_on_display(Display *dpy) 600{ 601 int i; 602 for (i = 0; i < NumVisuals; i++) { 603 if (VisualTable[i]->display == dpy) { 604 /* remove this visual */ 605 int j; 606 free(VisualTable[i]); 607 for (j = i; j < NumVisuals - 1; j++) 608 VisualTable[j] = VisualTable[j + 1]; 609 NumVisuals--; 610 } 611 } 612} 613 614 615/** 616 * Called from XCloseDisplay() to let us free our display-related data. 617 */ 618static int 619close_display_callback(Display *dpy, XExtCodes *codes) 620{ 621 xmesa_destroy_buffers_on_display(dpy); 622 destroy_visuals_on_display(dpy); 623 xmesa_close_display(dpy); 624 return 0; 625} 626 627 628/** 629 * Look for the named extension on given display and return a pointer 630 * to the _XExtension data, or NULL if extension not found. 631 */ 632static _XExtension * 633lookup_extension(Display *dpy, const char *extName) 634{ 635 _XExtension *ext; 636 for (ext = dpy->ext_procs; ext; ext = ext->next) { 637 if (ext->name && strcmp(ext->name, extName) == 0) { 638 return ext; 639 } 640 } 641 return NULL; 642} 643 644 645/** 646 * Whenever we're given a new Display pointer, call this function to 647 * register our close_display_callback function. 648 */ 649static void 650register_with_display(Display *dpy) 651{ 652 const char *extName = "MesaGLX"; 653 _XExtension *ext; 654 655 ext = lookup_extension(dpy, extName); 656 if (!ext) { 657 XExtCodes *c = XAddExtension(dpy); 658 ext = dpy->ext_procs; /* new extension is at head of list */ 659 assert(c->extension == ext->codes.extension); 660 (void) c; 661 ext->name = strdup(extName); 662 ext->close_display = close_display_callback; 663 } 664} 665 666 667/** 668 * Fake an error. 669 */ 670static int 671generate_error(Display *dpy, 672 unsigned char error_code, 673 XID resourceid, 674 unsigned char minor_code, 675 Bool core) 676{ 677 XErrorHandler handler; 678 int major_opcode; 679 int first_event; 680 int first_error; 681 XEvent event; 682 683 handler = XSetErrorHandler(NULL); 684 XSetErrorHandler(handler); 685 if (!handler) { 686 return 0; 687 } 688 689 if (!XQueryExtension(dpy, GLX_EXTENSION_NAME, &major_opcode, &first_event, &first_error)) { 690 major_opcode = 0; 691 first_event = 0; 692 first_error = 0; 693 } 694 695 if (!core) { 696 error_code += first_error; 697 } 698 699 memset(&event, 0, sizeof event); 700 701 event.xerror.type = X_Error; 702 event.xerror.display = dpy; 703 event.xerror.resourceid = resourceid; 704 event.xerror.serial = NextRequest(dpy) - 1; 705 event.xerror.error_code = error_code; 706 event.xerror.request_code = major_opcode; 707 event.xerror.minor_code = minor_code; 708 709 return handler(dpy, &event.xerror); 710} 711 712 713/**********************************************************************/ 714/*** Begin Fake GLX API Functions ***/ 715/**********************************************************************/ 716 717 718/** 719 * Helper used by glXChooseVisual and glXChooseFBConfig. 720 * The fbConfig parameter must be GL_FALSE for the former and GL_TRUE for 721 * the later. 722 * In either case, the attribute list is terminated with the value 'None'. 723 */ 724static XMesaVisual 725choose_visual( Display *dpy, int screen, const int *list, GLboolean fbConfig ) 726{ 727 const GLboolean rgbModeDefault = fbConfig; 728 const int *parselist; 729 XVisualInfo *vis; 730 int min_red=0, min_green=0, min_blue=0; 731 GLboolean rgb_flag = rgbModeDefault; 732 GLboolean alpha_flag = GL_FALSE; 733 GLboolean double_flag = GL_FALSE; 734 GLboolean stereo_flag = GL_FALSE; 735 GLint depth_size = 0; 736 GLint stencil_size = 0; 737 GLint accumRedSize = 0; 738 GLint accumGreenSize = 0; 739 GLint accumBlueSize = 0; 740 GLint accumAlphaSize = 0; 741 int level = 0; 742 int visual_type = DONT_CARE; 743 GLint caveat = DONT_CARE; 744 XMesaVisual xmvis = NULL; 745 int desiredVisualID = -1; 746 int numAux = 0; 747 GLint num_samples = 0; 748 749 if (xmesa_init( dpy ) != 0) { 750 _mesa_warning(NULL, "Failed to initialize display"); 751 return NULL; 752 } 753 754 parselist = list; 755 756 while (*parselist) { 757 758 if (fbConfig && 759 parselist[1] == GLX_DONT_CARE && 760 parselist[0] != GLX_LEVEL) { 761 /* For glXChooseFBConfig(), skip attributes whose value is 762 * GLX_DONT_CARE, unless it's GLX_LEVEL (which can legitimately be 763 * a negative value). 764 * 765 * From page 17 (23 of the pdf) of the GLX 1.4 spec: 766 * GLX DONT CARE may be specified for all attributes except GLX LEVEL. 767 */ 768 parselist += 2; 769 continue; 770 } 771 772 switch (*parselist) { 773 case GLX_USE_GL: 774 if (fbConfig) { 775 /* invalid token */ 776 return NULL; 777 } 778 else { 779 /* skip */ 780 parselist++; 781 } 782 break; 783 case GLX_BUFFER_SIZE: 784 parselist++; 785 parselist++; 786 break; 787 case GLX_LEVEL: 788 parselist++; 789 level = *parselist++; 790 break; 791 case GLX_RGBA: 792 if (fbConfig) { 793 /* invalid token */ 794 return NULL; 795 } 796 else { 797 rgb_flag = GL_TRUE; 798 parselist++; 799 } 800 break; 801 case GLX_DOUBLEBUFFER: 802 parselist++; 803 if (fbConfig) { 804 double_flag = *parselist++; 805 } 806 else { 807 double_flag = GL_TRUE; 808 } 809 break; 810 case GLX_STEREO: 811 parselist++; 812 if (fbConfig) { 813 stereo_flag = *parselist++; 814 } 815 else { 816 stereo_flag = GL_TRUE; 817 } 818 break; 819 case GLX_AUX_BUFFERS: 820 parselist++; 821 numAux = *parselist++; 822 if (numAux > MAX_AUX_BUFFERS) 823 return NULL; 824 break; 825 case GLX_RED_SIZE: 826 parselist++; 827 min_red = *parselist++; 828 break; 829 case GLX_GREEN_SIZE: 830 parselist++; 831 min_green = *parselist++; 832 break; 833 case GLX_BLUE_SIZE: 834 parselist++; 835 min_blue = *parselist++; 836 break; 837 case GLX_ALPHA_SIZE: 838 parselist++; 839 { 840 GLint size = *parselist++; 841 alpha_flag = size ? GL_TRUE : GL_FALSE; 842 } 843 break; 844 case GLX_DEPTH_SIZE: 845 parselist++; 846 depth_size = *parselist++; 847 break; 848 case GLX_STENCIL_SIZE: 849 parselist++; 850 stencil_size = *parselist++; 851 break; 852 case GLX_ACCUM_RED_SIZE: 853 parselist++; 854 { 855 GLint size = *parselist++; 856 accumRedSize = MAX2( accumRedSize, size ); 857 } 858 break; 859 case GLX_ACCUM_GREEN_SIZE: 860 parselist++; 861 { 862 GLint size = *parselist++; 863 accumGreenSize = MAX2( accumGreenSize, size ); 864 } 865 break; 866 case GLX_ACCUM_BLUE_SIZE: 867 parselist++; 868 { 869 GLint size = *parselist++; 870 accumBlueSize = MAX2( accumBlueSize, size ); 871 } 872 break; 873 case GLX_ACCUM_ALPHA_SIZE: 874 parselist++; 875 { 876 GLint size = *parselist++; 877 accumAlphaSize = MAX2( accumAlphaSize, size ); 878 } 879 break; 880 881 /* 882 * GLX_EXT_visual_info extension 883 */ 884 case GLX_X_VISUAL_TYPE_EXT: 885 parselist++; 886 visual_type = *parselist++; 887 break; 888 case GLX_TRANSPARENT_TYPE_EXT: 889 parselist++; 890 parselist++; 891 break; 892 case GLX_TRANSPARENT_INDEX_VALUE_EXT: 893 parselist++; 894 parselist++; 895 break; 896 case GLX_TRANSPARENT_RED_VALUE_EXT: 897 case GLX_TRANSPARENT_GREEN_VALUE_EXT: 898 case GLX_TRANSPARENT_BLUE_VALUE_EXT: 899 case GLX_TRANSPARENT_ALPHA_VALUE_EXT: 900 /* ignore */ 901 parselist++; 902 parselist++; 903 break; 904 905 /* 906 * GLX_EXT_visual_info extension 907 */ 908 case GLX_VISUAL_CAVEAT_EXT: 909 parselist++; 910 caveat = *parselist++; /* ignored for now */ 911 break; 912 913 /* 914 * GLX_ARB_multisample 915 */ 916 case GLX_SAMPLE_BUFFERS_ARB: 917 /* ignore */ 918 parselist++; 919 parselist++; 920 break; 921 case GLX_SAMPLES_ARB: 922 parselist++; 923 num_samples = *parselist++; 924 break; 925 926 /* 927 * FBConfig attribs. 928 */ 929 case GLX_RENDER_TYPE: 930 if (!fbConfig) 931 return NULL; 932 parselist++; 933 if (*parselist & GLX_RGBA_BIT) { 934 rgb_flag = GL_TRUE; 935 } 936 else if (*parselist & GLX_COLOR_INDEX_BIT) { 937 rgb_flag = GL_FALSE; 938 } 939 else if (*parselist == 0) { 940 rgb_flag = GL_TRUE; 941 } 942 parselist++; 943 break; 944 case GLX_DRAWABLE_TYPE: 945 if (!fbConfig) 946 return NULL; 947 parselist++; 948 if (*parselist & ~(GLX_WINDOW_BIT | GLX_PIXMAP_BIT | GLX_PBUFFER_BIT)) { 949 return NULL; /* bad bit */ 950 } 951 parselist++; 952 break; 953 case GLX_FBCONFIG_ID: 954 case GLX_VISUAL_ID: 955 if (!fbConfig) 956 return NULL; 957 parselist++; 958 desiredVisualID = *parselist++; 959 break; 960 case GLX_X_RENDERABLE: 961 case GLX_MAX_PBUFFER_WIDTH: 962 case GLX_MAX_PBUFFER_HEIGHT: 963 case GLX_MAX_PBUFFER_PIXELS: 964 if (!fbConfig) 965 return NULL; /* invalid config option */ 966 parselist += 2; /* ignore the parameter */ 967 break; 968 969 case GLX_BIND_TO_TEXTURE_RGB_EXT: 970 parselist++; /*skip*/ 971 break; 972 case GLX_BIND_TO_TEXTURE_RGBA_EXT: 973 parselist++; /*skip*/ 974 break; 975 case GLX_BIND_TO_MIPMAP_TEXTURE_EXT: 976 parselist++; /*skip*/ 977 break; 978 case GLX_BIND_TO_TEXTURE_TARGETS_EXT: 979 parselist++; 980 if (*parselist & ~(GLX_TEXTURE_1D_BIT_EXT | 981 GLX_TEXTURE_2D_BIT_EXT | 982 GLX_TEXTURE_RECTANGLE_BIT_EXT)) { 983 /* invalid bit */ 984 return NULL; 985 } 986 break; 987 case GLX_Y_INVERTED_EXT: 988 parselist++; /*skip*/ 989 break; 990 991 case None: 992 /* end of list */ 993 break; 994 995 default: 996 /* undefined attribute */ 997 _mesa_warning(NULL, "unexpected attrib 0x%x in choose_visual()", 998 *parselist); 999 return NULL; 1000 } 1001 } 1002 1003 (void) caveat; 1004 1005 if (num_samples < 0) { 1006 _mesa_warning(NULL, "GLX_SAMPLES_ARB: number of samples must not be negative"); 1007 return NULL; 1008 } 1009 1010 /* 1011 * Since we're only simulating the GLX extension this function will never 1012 * find any real GL visuals. Instead, all we can do is try to find an RGB 1013 * or CI visual of appropriate depth. Other requested attributes such as 1014 * double buffering, depth buffer, etc. will be associated with the X 1015 * visual and stored in the VisualTable[]. 1016 */ 1017 if (desiredVisualID != -1) { 1018 /* try to get a specific visual, by visualID */ 1019 XVisualInfo temp; 1020 int n; 1021 temp.visualid = desiredVisualID; 1022 temp.screen = screen; 1023 vis = XGetVisualInfo(dpy, VisualIDMask | VisualScreenMask, &temp, &n); 1024 if (vis) { 1025 /* give the visual some useful GLX attributes */ 1026 double_flag = GL_TRUE; 1027 rgb_flag = GL_TRUE; 1028 } 1029 } 1030 else if (level==0) { 1031 /* normal color planes */ 1032 /* Get an RGB visual */ 1033 int min_rgb = min_red + min_green + min_blue; 1034 if (min_rgb>1 && min_rgb<8) { 1035 /* a special case to be sure we can get a monochrome visual */ 1036 min_rgb = 1; 1037 } 1038 vis = choose_x_visual( dpy, screen, min_rgb, visual_type ); 1039 } 1040 else { 1041 _mesa_warning(NULL, "overlay not supported"); 1042 return NULL; 1043 } 1044 1045 if (vis) { 1046 /* Note: we're not exactly obeying the glXChooseVisual rules here. 1047 * When GLX_DEPTH_SIZE = 1 is specified we're supposed to choose the 1048 * largest depth buffer size, which is 32bits/value. Instead, we 1049 * return 16 to maintain performance with earlier versions of Mesa. 1050 */ 1051 if (stencil_size > 0) 1052 depth_size = 24; /* if Z and stencil, always use 24+8 format */ 1053 else if (depth_size > 24) 1054 depth_size = 32; 1055 else if (depth_size > 16) 1056 depth_size = 24; 1057 else if (depth_size > 0) { 1058 depth_size = default_depth_bits(); 1059 } 1060 1061 if (!alpha_flag) { 1062 alpha_flag = default_alpha_bits() > 0; 1063 } 1064 1065 /* we only support one size of stencil and accum buffers. */ 1066 if (stencil_size > 0) 1067 stencil_size = 8; 1068 1069 if (accumRedSize > 0 || 1070 accumGreenSize > 0 || 1071 accumBlueSize > 0 || 1072 accumAlphaSize > 0) { 1073 1074 accumRedSize = 1075 accumGreenSize = 1076 accumBlueSize = default_accum_bits(); 1077 1078 accumAlphaSize = alpha_flag ? accumRedSize : 0; 1079 } 1080 1081 xmvis = save_glx_visual( dpy, vis, rgb_flag, alpha_flag, double_flag, 1082 stereo_flag, depth_size, stencil_size, 1083 accumRedSize, accumGreenSize, 1084 accumBlueSize, accumAlphaSize, level, numAux, 1085 num_samples ); 1086 } 1087 1088 return xmvis; 1089} 1090 1091 1092PUBLIC XVisualInfo * 1093glXChooseVisual( Display *dpy, int screen, int *list ) 1094{ 1095 XMesaVisual xmvis; 1096 1097 /* register ourselves as an extension on this display */ 1098 register_with_display(dpy); 1099 1100 xmvis = choose_visual(dpy, screen, list, GL_FALSE); 1101 if (xmvis) { 1102 /* create a new vishandle - the cached one may be stale */ 1103 xmvis->vishandle = malloc(sizeof(XVisualInfo)); 1104 if (xmvis->vishandle) { 1105 memcpy(xmvis->vishandle, xmvis->visinfo, sizeof(XVisualInfo)); 1106 } 1107 return xmvis->vishandle; 1108 } 1109 else 1110 return NULL; 1111} 1112 1113 1114/** 1115 * Helper function used by other glXCreateContext functions. 1116 */ 1117static GLXContext 1118create_context(Display *dpy, XMesaVisual xmvis, 1119 XMesaContext shareCtx, Bool direct, 1120 unsigned major, unsigned minor, 1121 unsigned profileMask, unsigned contextFlags) 1122{ 1123 GLXContext glxCtx; 1124 1125 if (!dpy || !xmvis) 1126 return 0; 1127 1128 glxCtx = CALLOC_STRUCT(__GLXcontextRec); 1129 if (!glxCtx) 1130 return 0; 1131 1132 /* deallocate unused windows/buffers */ 1133#if 0 1134 XMesaGarbageCollect(); 1135#endif 1136 1137 glxCtx->xmesaContext = XMesaCreateContext(xmvis, shareCtx, major, minor, 1138 profileMask, contextFlags); 1139 if (!glxCtx->xmesaContext) { 1140 free(glxCtx); 1141 return NULL; 1142 } 1143 1144 glxCtx->isDirect = DEFAULT_DIRECT; 1145 glxCtx->currentDpy = dpy; 1146 glxCtx->xid = (XID) glxCtx; /* self pointer */ 1147 1148 return glxCtx; 1149} 1150 1151 1152PUBLIC GLXContext 1153glXCreateContext( Display *dpy, XVisualInfo *visinfo, 1154 GLXContext shareCtx, Bool direct ) 1155{ 1156 XMesaVisual xmvis; 1157 1158 xmvis = find_glx_visual( dpy, visinfo ); 1159 if (!xmvis) { 1160 /* This visual wasn't found with glXChooseVisual() */ 1161 xmvis = create_glx_visual( dpy, visinfo ); 1162 if (!xmvis) { 1163 /* unusable visual */ 1164 return NULL; 1165 } 1166 } 1167 1168 return create_context(dpy, xmvis, 1169 shareCtx ? shareCtx->xmesaContext : NULL, 1170 direct, 1171 1, 0, GLX_CONTEXT_COMPATIBILITY_PROFILE_BIT_ARB, 0x0); 1172} 1173 1174 1175/* XXX these may have to be removed due to thread-safety issues. */ 1176static GLXContext MakeCurrent_PrevContext = 0; 1177static GLXDrawable MakeCurrent_PrevDrawable = 0; 1178static GLXDrawable MakeCurrent_PrevReadable = 0; 1179static XMesaBuffer MakeCurrent_PrevDrawBuffer = 0; 1180static XMesaBuffer MakeCurrent_PrevReadBuffer = 0; 1181 1182 1183/* GLX 1.3 and later */ 1184PUBLIC Bool 1185glXMakeContextCurrent( Display *dpy, GLXDrawable draw, 1186 GLXDrawable read, GLXContext ctx ) 1187{ 1188 GLXContext glxCtx = ctx; 1189 static boolean firsttime = 1, no_rast = 0; 1190 1191 if (firsttime) { 1192 no_rast = getenv("SP_NO_RAST") != NULL; 1193 firsttime = 0; 1194 } 1195 1196 if (ctx && draw && read) { 1197 XMesaBuffer drawBuffer, readBuffer; 1198 XMesaContext xmctx = glxCtx->xmesaContext; 1199 1200 /* Find the XMesaBuffer which corresponds to the GLXDrawable 'draw' */ 1201 if (ctx == MakeCurrent_PrevContext 1202 && draw == MakeCurrent_PrevDrawable) { 1203 drawBuffer = MakeCurrent_PrevDrawBuffer; 1204 } 1205 else { 1206 drawBuffer = XMesaFindBuffer( dpy, draw ); 1207 } 1208 if (!drawBuffer) { 1209 /* drawable must be a new window! */ 1210 drawBuffer = XMesaCreateWindowBuffer( xmctx->xm_visual, draw ); 1211 if (!drawBuffer) { 1212 /* Out of memory, or context/drawable depth mismatch */ 1213 return False; 1214 } 1215 } 1216 1217 /* Find the XMesaBuffer which corresponds to the GLXDrawable 'read' */ 1218 if (ctx == MakeCurrent_PrevContext 1219 && read == MakeCurrent_PrevReadable) { 1220 readBuffer = MakeCurrent_PrevReadBuffer; 1221 } 1222 else { 1223 readBuffer = XMesaFindBuffer( dpy, read ); 1224 } 1225 if (!readBuffer) { 1226 /* drawable must be a new window! */ 1227 readBuffer = XMesaCreateWindowBuffer( xmctx->xm_visual, read ); 1228 if (!readBuffer) { 1229 /* Out of memory, or context/drawable depth mismatch */ 1230 return False; 1231 } 1232 } 1233 1234 if (no_rast && 1235 MakeCurrent_PrevContext == ctx && 1236 MakeCurrent_PrevDrawable == draw && 1237 MakeCurrent_PrevReadable == read && 1238 MakeCurrent_PrevDrawBuffer == drawBuffer && 1239 MakeCurrent_PrevReadBuffer == readBuffer) 1240 return True; 1241 1242 MakeCurrent_PrevContext = ctx; 1243 MakeCurrent_PrevDrawable = draw; 1244 MakeCurrent_PrevReadable = read; 1245 MakeCurrent_PrevDrawBuffer = drawBuffer; 1246 MakeCurrent_PrevReadBuffer = readBuffer; 1247 1248 /* Now make current! */ 1249 if (XMesaMakeCurrent2(xmctx, drawBuffer, readBuffer)) { 1250 ctx->currentDpy = dpy; 1251 ctx->currentDrawable = draw; 1252 ctx->currentReadable = read; 1253 SetCurrentContext(ctx); 1254 return True; 1255 } 1256 else { 1257 return False; 1258 } 1259 } 1260 else if (!ctx && !draw && !read) { 1261 /* release current context w/out assigning new one. */ 1262 XMesaMakeCurrent2( NULL, NULL, NULL ); 1263 MakeCurrent_PrevContext = 0; 1264 MakeCurrent_PrevDrawable = 0; 1265 MakeCurrent_PrevReadable = 0; 1266 MakeCurrent_PrevDrawBuffer = 0; 1267 MakeCurrent_PrevReadBuffer = 0; 1268 SetCurrentContext(NULL); 1269 return True; 1270 } 1271 else { 1272 /* The args must either all be non-zero or all zero. 1273 * This is an error. 1274 */ 1275 return False; 1276 } 1277} 1278 1279 1280PUBLIC Bool 1281glXMakeCurrent( Display *dpy, GLXDrawable drawable, GLXContext ctx ) 1282{ 1283 return glXMakeContextCurrent( dpy, drawable, drawable, ctx ); 1284} 1285 1286 1287PUBLIC GLXContext 1288glXGetCurrentContext(void) 1289{ 1290 return GetCurrentContext(); 1291} 1292 1293 1294PUBLIC Display * 1295glXGetCurrentDisplay(void) 1296{ 1297 GLXContext glxCtx = glXGetCurrentContext(); 1298 1299 return glxCtx ? glxCtx->currentDpy : NULL; 1300} 1301 1302 1303PUBLIC Display * 1304glXGetCurrentDisplayEXT(void) 1305{ 1306 return glXGetCurrentDisplay(); 1307} 1308 1309 1310PUBLIC GLXDrawable 1311glXGetCurrentDrawable(void) 1312{ 1313 GLXContext gc = glXGetCurrentContext(); 1314 return gc ? gc->currentDrawable : 0; 1315} 1316 1317 1318PUBLIC GLXDrawable 1319glXGetCurrentReadDrawable(void) 1320{ 1321 GLXContext gc = glXGetCurrentContext(); 1322 return gc ? gc->currentReadable : 0; 1323} 1324 1325 1326PUBLIC GLXDrawable 1327glXGetCurrentReadDrawableSGI(void) 1328{ 1329 return glXGetCurrentReadDrawable(); 1330} 1331 1332 1333PUBLIC GLXPixmap 1334glXCreateGLXPixmap( Display *dpy, XVisualInfo *visinfo, Pixmap pixmap ) 1335{ 1336 XMesaVisual v; 1337 XMesaBuffer b; 1338 1339 v = find_glx_visual( dpy, visinfo ); 1340 if (!v) { 1341 v = create_glx_visual( dpy, visinfo ); 1342 if (!v) { 1343 /* unusable visual */ 1344 return 0; 1345 } 1346 } 1347 1348 b = XMesaCreatePixmapBuffer( v, pixmap, 0 ); 1349 if (!b) { 1350 return 0; 1351 } 1352 return b->ws.drawable; 1353} 1354 1355 1356/*** GLX_MESA_pixmap_colormap ***/ 1357 1358PUBLIC GLXPixmap 1359glXCreateGLXPixmapMESA( Display *dpy, XVisualInfo *visinfo, 1360 Pixmap pixmap, Colormap cmap ) 1361{ 1362 XMesaVisual v; 1363 XMesaBuffer b; 1364 1365 v = find_glx_visual( dpy, visinfo ); 1366 if (!v) { 1367 v = create_glx_visual( dpy, visinfo ); 1368 if (!v) { 1369 /* unusable visual */ 1370 return 0; 1371 } 1372 } 1373 1374 b = XMesaCreatePixmapBuffer( v, pixmap, cmap ); 1375 if (!b) { 1376 return 0; 1377 } 1378 return b->ws.drawable; 1379} 1380 1381 1382PUBLIC void 1383glXDestroyGLXPixmap( Display *dpy, GLXPixmap pixmap ) 1384{ 1385 XMesaBuffer b = XMesaFindBuffer(dpy, pixmap); 1386 if (b) { 1387 XMesaDestroyBuffer(b); 1388 } 1389 else if (getenv("MESA_DEBUG")) { 1390 _mesa_warning(NULL, "Mesa: glXDestroyGLXPixmap: invalid pixmap\n"); 1391 } 1392} 1393 1394 1395PUBLIC void 1396glXCopyContext( Display *dpy, GLXContext src, GLXContext dst, 1397 unsigned long mask ) 1398{ 1399 XMesaContext xm_src = src->xmesaContext; 1400 XMesaContext xm_dst = dst->xmesaContext; 1401 (void) dpy; 1402 if (MakeCurrent_PrevContext == src) { 1403 glFlush(); 1404 } 1405 XMesaCopyContext(xm_src, xm_dst, mask); 1406} 1407 1408 1409PUBLIC Bool 1410glXQueryExtension( Display *dpy, int *errorBase, int *eventBase ) 1411{ 1412 int op, ev, err; 1413 /* Mesa's GLX isn't really an X extension but we try to act like one. */ 1414 if (!XQueryExtension(dpy, GLX_EXTENSION_NAME, &op, &ev, &err)) 1415 ev = err = 0; 1416 if (errorBase) 1417 *errorBase = err; 1418 if (eventBase) 1419 *eventBase = ev; 1420 return True; /* we're faking GLX so always return success */ 1421} 1422 1423 1424PUBLIC void 1425glXDestroyContext( Display *dpy, GLXContext ctx ) 1426{ 1427 if (ctx) { 1428 GLXContext glxCtx = ctx; 1429 (void) dpy; 1430 MakeCurrent_PrevContext = 0; 1431 MakeCurrent_PrevDrawable = 0; 1432 MakeCurrent_PrevReadable = 0; 1433 MakeCurrent_PrevDrawBuffer = 0; 1434 MakeCurrent_PrevReadBuffer = 0; 1435 XMesaDestroyContext( glxCtx->xmesaContext ); 1436 XMesaGarbageCollect(); 1437 free(glxCtx); 1438 } 1439} 1440 1441 1442PUBLIC Bool 1443glXIsDirect( Display *dpy, GLXContext ctx ) 1444{ 1445 return ctx ? ctx->isDirect : False; 1446} 1447 1448 1449 1450PUBLIC void 1451glXSwapBuffers( Display *dpy, GLXDrawable drawable ) 1452{ 1453 XMesaBuffer buffer = XMesaFindBuffer( dpy, drawable ); 1454 static boolean firsttime = 1, no_rast = 0; 1455 1456 if (firsttime) { 1457 no_rast = getenv("SP_NO_RAST") != NULL; 1458 firsttime = 0; 1459 } 1460 1461 if (no_rast) 1462 return; 1463 1464 if (buffer) { 1465 XMesaSwapBuffers(buffer); 1466 } 1467 else if (getenv("MESA_DEBUG")) { 1468 _mesa_warning(NULL, "glXSwapBuffers: invalid drawable 0x%x\n", 1469 (int) drawable); 1470 } 1471} 1472 1473 1474 1475/*** GLX_MESA_copy_sub_buffer ***/ 1476 1477PUBLIC void 1478glXCopySubBufferMESA(Display *dpy, GLXDrawable drawable, 1479 int x, int y, int width, int height) 1480{ 1481 XMesaBuffer buffer = XMesaFindBuffer( dpy, drawable ); 1482 if (buffer) { 1483 XMesaCopySubBuffer(buffer, x, y, width, height); 1484 } 1485 else if (getenv("MESA_DEBUG")) { 1486 _mesa_warning(NULL, "Mesa: glXCopySubBufferMESA: invalid drawable\n"); 1487 } 1488} 1489 1490 1491PUBLIC Bool 1492glXQueryVersion( Display *dpy, int *maj, int *min ) 1493{ 1494 (void) dpy; 1495 /* Return GLX version, not Mesa version */ 1496 assert(CLIENT_MAJOR_VERSION == SERVER_MAJOR_VERSION); 1497 *maj = CLIENT_MAJOR_VERSION; 1498 *min = MIN2( CLIENT_MINOR_VERSION, SERVER_MINOR_VERSION ); 1499 return True; 1500} 1501 1502 1503/* 1504 * Query the GLX attributes of the given XVisualInfo. 1505 */ 1506static int 1507get_config( XMesaVisual xmvis, int attrib, int *value, GLboolean fbconfig ) 1508{ 1509 assert(xmvis); 1510 switch(attrib) { 1511 case GLX_USE_GL: 1512 if (fbconfig) 1513 return GLX_BAD_ATTRIBUTE; 1514 *value = (int) True; 1515 return 0; 1516 case GLX_BUFFER_SIZE: 1517 *value = xmvis->visinfo->depth; 1518 return 0; 1519 case GLX_LEVEL: 1520 *value = xmvis->mesa_visual.level; 1521 return 0; 1522 case GLX_RGBA: 1523 if (fbconfig) 1524 return GLX_BAD_ATTRIBUTE; 1525 if (xmvis->mesa_visual.rgbMode) { 1526 *value = True; 1527 } 1528 else { 1529 *value = False; 1530 } 1531 return 0; 1532 case GLX_DOUBLEBUFFER: 1533 *value = (int) xmvis->mesa_visual.doubleBufferMode; 1534 return 0; 1535 case GLX_STEREO: 1536 *value = (int) xmvis->mesa_visual.stereoMode; 1537 return 0; 1538 case GLX_AUX_BUFFERS: 1539 *value = xmvis->mesa_visual.numAuxBuffers; 1540 return 0; 1541 case GLX_RED_SIZE: 1542 *value = xmvis->mesa_visual.redBits; 1543 return 0; 1544 case GLX_GREEN_SIZE: 1545 *value = xmvis->mesa_visual.greenBits; 1546 return 0; 1547 case GLX_BLUE_SIZE: 1548 *value = xmvis->mesa_visual.blueBits; 1549 return 0; 1550 case GLX_ALPHA_SIZE: 1551 *value = xmvis->mesa_visual.alphaBits; 1552 return 0; 1553 case GLX_DEPTH_SIZE: 1554 *value = xmvis->mesa_visual.depthBits; 1555 return 0; 1556 case GLX_STENCIL_SIZE: 1557 *value = xmvis->mesa_visual.stencilBits; 1558 return 0; 1559 case GLX_ACCUM_RED_SIZE: 1560 *value = xmvis->mesa_visual.accumRedBits; 1561 return 0; 1562 case GLX_ACCUM_GREEN_SIZE: 1563 *value = xmvis->mesa_visual.accumGreenBits; 1564 return 0; 1565 case GLX_ACCUM_BLUE_SIZE: 1566 *value = xmvis->mesa_visual.accumBlueBits; 1567 return 0; 1568 case GLX_ACCUM_ALPHA_SIZE: 1569 *value = xmvis->mesa_visual.accumAlphaBits; 1570 return 0; 1571 1572 /* 1573 * GLX_EXT_visual_info extension 1574 */ 1575 case GLX_X_VISUAL_TYPE_EXT: 1576 switch (xmvis->visinfo->CLASS) { 1577 case StaticGray: *value = GLX_STATIC_GRAY_EXT; return 0; 1578 case GrayScale: *value = GLX_GRAY_SCALE_EXT; return 0; 1579 case StaticColor: *value = GLX_STATIC_GRAY_EXT; return 0; 1580 case PseudoColor: *value = GLX_PSEUDO_COLOR_EXT; return 0; 1581 case TrueColor: *value = GLX_TRUE_COLOR_EXT; return 0; 1582 case DirectColor: *value = GLX_DIRECT_COLOR_EXT; return 0; 1583 } 1584 return 0; 1585 case GLX_TRANSPARENT_TYPE_EXT: 1586 /* normal planes */ 1587 *value = GLX_NONE_EXT; 1588 return 0; 1589 case GLX_TRANSPARENT_INDEX_VALUE_EXT: 1590 /* undefined */ 1591 return 0; 1592 case GLX_TRANSPARENT_RED_VALUE_EXT: 1593 /* undefined */ 1594 return 0; 1595 case GLX_TRANSPARENT_GREEN_VALUE_EXT: 1596 /* undefined */ 1597 return 0; 1598 case GLX_TRANSPARENT_BLUE_VALUE_EXT: 1599 /* undefined */ 1600 return 0; 1601 case GLX_TRANSPARENT_ALPHA_VALUE_EXT: 1602 /* undefined */ 1603 return 0; 1604 1605 /* 1606 * GLX_EXT_visual_info extension 1607 */ 1608 case GLX_VISUAL_CAVEAT_EXT: 1609 /* test for zero, just in case */ 1610 if (xmvis->mesa_visual.visualRating > 0) 1611 *value = xmvis->mesa_visual.visualRating; 1612 else 1613 *value = GLX_NONE_EXT; 1614 return 0; 1615 1616 /* 1617 * GLX_ARB_multisample 1618 */ 1619 case GLX_SAMPLE_BUFFERS_ARB: 1620 *value = xmvis->mesa_visual.sampleBuffers; 1621 return 0; 1622 case GLX_SAMPLES_ARB: 1623 *value = xmvis->mesa_visual.samples; 1624 return 0; 1625 1626 /* 1627 * For FBConfigs: 1628 */ 1629 case GLX_SCREEN_EXT: 1630 if (!fbconfig) 1631 return GLX_BAD_ATTRIBUTE; 1632 *value = xmvis->visinfo->screen; 1633 break; 1634 case GLX_DRAWABLE_TYPE: /*SGIX too */ 1635 if (!fbconfig) 1636 return GLX_BAD_ATTRIBUTE; 1637 *value = GLX_WINDOW_BIT | GLX_PIXMAP_BIT | GLX_PBUFFER_BIT; 1638 break; 1639 case GLX_RENDER_TYPE_SGIX: 1640 if (!fbconfig) 1641 return GLX_BAD_ATTRIBUTE; 1642 if (xmvis->mesa_visual.rgbMode) 1643 *value = GLX_RGBA_BIT; 1644 else 1645 *value = GLX_COLOR_INDEX_BIT; 1646 break; 1647 case GLX_X_RENDERABLE_SGIX: 1648 if (!fbconfig) 1649 return GLX_BAD_ATTRIBUTE; 1650 *value = True; /* XXX really? */ 1651 break; 1652 case GLX_FBCONFIG_ID_SGIX: 1653 if (!fbconfig) 1654 return GLX_BAD_ATTRIBUTE; 1655 *value = xmvis->visinfo->visualid; 1656 break; 1657 case GLX_MAX_PBUFFER_WIDTH: 1658 if (!fbconfig) 1659 return GLX_BAD_ATTRIBUTE; 1660 /* XXX should be same as ctx->Const.MaxRenderbufferSize */ 1661 *value = DisplayWidth(xmvis->display, xmvis->visinfo->screen); 1662 break; 1663 case GLX_MAX_PBUFFER_HEIGHT: 1664 if (!fbconfig) 1665 return GLX_BAD_ATTRIBUTE; 1666 *value = DisplayHeight(xmvis->display, xmvis->visinfo->screen); 1667 break; 1668 case GLX_MAX_PBUFFER_PIXELS: 1669 if (!fbconfig) 1670 return GLX_BAD_ATTRIBUTE; 1671 *value = DisplayWidth(xmvis->display, xmvis->visinfo->screen) * 1672 DisplayHeight(xmvis->display, xmvis->visinfo->screen); 1673 break; 1674 case GLX_VISUAL_ID: 1675 if (!fbconfig) 1676 return GLX_BAD_ATTRIBUTE; 1677 *value = xmvis->visinfo->visualid; 1678 break; 1679 1680 case GLX_BIND_TO_TEXTURE_RGB_EXT: 1681 *value = True; /*XXX*/ 1682 break; 1683 case GLX_BIND_TO_TEXTURE_RGBA_EXT: 1684 /* XXX review */ 1685 *value = xmvis->mesa_visual.alphaBits > 0 ? True : False; 1686 break; 1687 case GLX_BIND_TO_MIPMAP_TEXTURE_EXT: 1688 *value = True; /*XXX*/ 1689 break; 1690 case GLX_BIND_TO_TEXTURE_TARGETS_EXT: 1691 *value = (GLX_TEXTURE_1D_BIT_EXT | 1692 GLX_TEXTURE_2D_BIT_EXT | 1693 GLX_TEXTURE_RECTANGLE_BIT_EXT); /*XXX*/ 1694 break; 1695 case GLX_Y_INVERTED_EXT: 1696 *value = True; /*XXX*/ 1697 break; 1698 1699 default: 1700 return GLX_BAD_ATTRIBUTE; 1701 } 1702 return Success; 1703} 1704 1705 1706PUBLIC int 1707glXGetConfig( Display *dpy, XVisualInfo *visinfo, 1708 int attrib, int *value ) 1709{ 1710 XMesaVisual xmvis; 1711 int k; 1712 if (!dpy || !visinfo) 1713 return GLX_BAD_ATTRIBUTE; 1714 1715 xmvis = find_glx_visual( dpy, visinfo ); 1716 if (!xmvis) { 1717 /* this visual wasn't obtained with glXChooseVisual */ 1718 xmvis = create_glx_visual( dpy, visinfo ); 1719 if (!xmvis) { 1720 /* this visual can't be used for GL rendering */ 1721 if (attrib==GLX_USE_GL) { 1722 *value = (int) False; 1723 return 0; 1724 } 1725 else { 1726 return GLX_BAD_VISUAL; 1727 } 1728 } 1729 } 1730 1731 k = get_config(xmvis, attrib, value, GL_FALSE); 1732 return k; 1733} 1734 1735 1736PUBLIC void 1737glXWaitGL( void ) 1738{ 1739 XMesaContext xmesa = XMesaGetCurrentContext(); 1740 XMesaFlush( xmesa ); 1741} 1742 1743 1744 1745PUBLIC void 1746glXWaitX( void ) 1747{ 1748 XMesaContext xmesa = XMesaGetCurrentContext(); 1749 XMesaFlush( xmesa ); 1750} 1751 1752 1753static const char * 1754get_extensions( void ) 1755{ 1756 return EXTENSIONS; 1757} 1758 1759 1760 1761/* GLX 1.1 and later */ 1762PUBLIC const char * 1763glXQueryExtensionsString( Display *dpy, int screen ) 1764{ 1765 (void) dpy; 1766 (void) screen; 1767 return get_extensions(); 1768} 1769 1770 1771 1772/* GLX 1.1 and later */ 1773PUBLIC const char * 1774glXQueryServerString( Display *dpy, int screen, int name ) 1775{ 1776 static char version[1000]; 1777 sprintf(version, "%d.%d %s", 1778 SERVER_MAJOR_VERSION, SERVER_MINOR_VERSION, xmesa_get_name()); 1779 1780 (void) dpy; 1781 (void) screen; 1782 1783 switch (name) { 1784 case GLX_EXTENSIONS: 1785 return get_extensions(); 1786 case GLX_VENDOR: 1787 return VENDOR; 1788 case GLX_VERSION: 1789 return version; 1790 default: 1791 return NULL; 1792 } 1793} 1794 1795 1796 1797/* GLX 1.1 and later */ 1798PUBLIC const char * 1799glXGetClientString( Display *dpy, int name ) 1800{ 1801 static char version[1000]; 1802 sprintf(version, "%d.%d %s", CLIENT_MAJOR_VERSION, 1803 CLIENT_MINOR_VERSION, xmesa_get_name()); 1804 1805 (void) dpy; 1806 1807 switch (name) { 1808 case GLX_EXTENSIONS: 1809 return get_extensions(); 1810 case GLX_VENDOR: 1811 return VENDOR; 1812 case GLX_VERSION: 1813 return version; 1814 default: 1815 return NULL; 1816 } 1817} 1818 1819 1820 1821/* 1822 * GLX 1.3 and later 1823 */ 1824 1825 1826PUBLIC int 1827glXGetFBConfigAttrib(Display *dpy, GLXFBConfig config, 1828 int attribute, int *value) 1829{ 1830 XMesaVisual v = (XMesaVisual) config; 1831 (void) dpy; 1832 (void) config; 1833 1834 if (!dpy || !config || !value) 1835 return -1; 1836 1837 return get_config(v, attribute, value, GL_TRUE); 1838} 1839 1840 1841PUBLIC GLXFBConfig * 1842glXGetFBConfigs( Display *dpy, int screen, int *nelements ) 1843{ 1844 XVisualInfo *visuals, visTemplate; 1845 const long visMask = VisualScreenMask; 1846 int i; 1847 1848 /* Get list of all X visuals */ 1849 visTemplate.screen = screen; 1850 visuals = XGetVisualInfo(dpy, visMask, &visTemplate, nelements); 1851 if (*nelements > 0) { 1852 XMesaVisual *results = malloc(*nelements * sizeof(XMesaVisual)); 1853 if (!results) { 1854 *nelements = 0; 1855 return NULL; 1856 } 1857 for (i = 0; i < *nelements; i++) { 1858 results[i] = create_glx_visual(dpy, visuals + i); 1859 if (!results[i]) { 1860 *nelements = i; 1861 break; 1862 } 1863 } 1864 return (GLXFBConfig *) results; 1865 } 1866 return NULL; 1867} 1868 1869 1870PUBLIC GLXFBConfig * 1871glXChooseFBConfig(Display *dpy, int screen, 1872 const int *attribList, int *nitems) 1873{ 1874 XMesaVisual xmvis; 1875 1876 /* register ourselves as an extension on this display */ 1877 register_with_display(dpy); 1878 1879 if (!attribList || !attribList[0]) { 1880 /* return list of all configs (per GLX_SGIX_fbconfig spec) */ 1881 return glXGetFBConfigs(dpy, screen, nitems); 1882 } 1883 1884 xmvis = choose_visual(dpy, screen, attribList, GL_TRUE); 1885 if (xmvis) { 1886 GLXFBConfig *config = malloc(sizeof(XMesaVisual)); 1887 if (!config) { 1888 *nitems = 0; 1889 return NULL; 1890 } 1891 *nitems = 1; 1892 config[0] = (GLXFBConfig) xmvis; 1893 return (GLXFBConfig *) config; 1894 } 1895 else { 1896 *nitems = 0; 1897 return NULL; 1898 } 1899} 1900 1901 1902PUBLIC XVisualInfo * 1903glXGetVisualFromFBConfig( Display *dpy, GLXFBConfig config ) 1904{ 1905 if (dpy && config) { 1906 XMesaVisual xmvis = (XMesaVisual) config; 1907#if 0 1908 return xmvis->vishandle; 1909#else 1910 /* create a new vishandle - the cached one may be stale */ 1911 xmvis->vishandle = malloc(sizeof(XVisualInfo)); 1912 if (xmvis->vishandle) { 1913 memcpy(xmvis->vishandle, xmvis->visinfo, sizeof(XVisualInfo)); 1914 } 1915 return xmvis->vishandle; 1916#endif 1917 } 1918 else { 1919 return NULL; 1920 } 1921} 1922 1923 1924PUBLIC GLXWindow 1925glXCreateWindow(Display *dpy, GLXFBConfig config, Window win, 1926 const int *attribList) 1927{ 1928 XMesaVisual xmvis = (XMesaVisual) config; 1929 XMesaBuffer xmbuf; 1930 if (!xmvis) 1931 return 0; 1932 1933 xmbuf = XMesaCreateWindowBuffer(xmvis, win); 1934 if (!xmbuf) 1935 return 0; 1936 1937 (void) dpy; 1938 (void) attribList; /* Ignored in GLX 1.3 */ 1939 1940 return win; /* A hack for now */ 1941} 1942 1943 1944PUBLIC void 1945glXDestroyWindow( Display *dpy, GLXWindow window ) 1946{ 1947 XMesaBuffer b = XMesaFindBuffer(dpy, (Drawable) window); 1948 if (b) 1949 XMesaDestroyBuffer(b); 1950 /* don't destroy X window */ 1951} 1952 1953 1954/* XXX untested */ 1955PUBLIC GLXPixmap 1956glXCreatePixmap(Display *dpy, GLXFBConfig config, Pixmap pixmap, 1957 const int *attribList) 1958{ 1959 XMesaVisual v = (XMesaVisual) config; 1960 XMesaBuffer b; 1961 const int *attr; 1962 int target = 0, format = 0, mipmap = 0; 1963 int value; 1964 1965 if (!dpy || !config || !pixmap) 1966 return 0; 1967 1968 for (attr = attribList; attr && *attr; attr++) { 1969 switch (*attr) { 1970 case GLX_TEXTURE_FORMAT_EXT: 1971 attr++; 1972 switch (*attr) { 1973 case GLX_TEXTURE_FORMAT_NONE_EXT: 1974 case GLX_TEXTURE_FORMAT_RGB_EXT: 1975 case GLX_TEXTURE_FORMAT_RGBA_EXT: 1976 format = *attr; 1977 break; 1978 default: 1979 /* error */ 1980 return 0; 1981 } 1982 break; 1983 case GLX_TEXTURE_TARGET_EXT: 1984 attr++; 1985 switch (*attr) { 1986 case GLX_TEXTURE_1D_EXT: 1987 case GLX_TEXTURE_2D_EXT: 1988 case GLX_TEXTURE_RECTANGLE_EXT: 1989 target = *attr; 1990 break; 1991 default: 1992 /* error */ 1993 return 0; 1994 } 1995 break; 1996 case GLX_MIPMAP_TEXTURE_EXT: 1997 attr++; 1998 if (*attr) 1999 mipmap = 1; 2000 break; 2001 default: 2002 /* error */ 2003 return 0; 2004 } 2005 } 2006 2007 if (format == GLX_TEXTURE_FORMAT_RGB_EXT) { 2008 if (get_config(v, GLX_BIND_TO_TEXTURE_RGB_EXT, 2009 &value, GL_TRUE) != Success 2010 || !value) { 2011 return 0; /* error! */ 2012 } 2013 } 2014 else if (format == GLX_TEXTURE_FORMAT_RGBA_EXT) { 2015 if (get_config(v, GLX_BIND_TO_TEXTURE_RGBA_EXT, 2016 &value, GL_TRUE) != Success 2017 || !value) { 2018 return 0; /* error! */ 2019 } 2020 } 2021 if (mipmap) { 2022 if (get_config(v, GLX_BIND_TO_MIPMAP_TEXTURE_EXT, 2023 &value, GL_TRUE) != Success 2024 || !value) { 2025 return 0; /* error! */ 2026 } 2027 } 2028 if (target == GLX_TEXTURE_1D_EXT) { 2029 if (get_config(v, GLX_BIND_TO_TEXTURE_TARGETS_EXT, 2030 &value, GL_TRUE) != Success 2031 || (value & GLX_TEXTURE_1D_BIT_EXT) == 0) { 2032 return 0; /* error! */ 2033 } 2034 } 2035 else if (target == GLX_TEXTURE_2D_EXT) { 2036 if (get_config(v, GLX_BIND_TO_TEXTURE_TARGETS_EXT, 2037 &value, GL_TRUE) != Success 2038 || (value & GLX_TEXTURE_2D_BIT_EXT) == 0) { 2039 return 0; /* error! */ 2040 } 2041 } 2042 if (target == GLX_TEXTURE_RECTANGLE_EXT) { 2043 if (get_config(v, GLX_BIND_TO_TEXTURE_TARGETS_EXT, 2044 &value, GL_TRUE) != Success 2045 || (value & GLX_TEXTURE_RECTANGLE_BIT_EXT) == 0) { 2046 return 0; /* error! */ 2047 } 2048 } 2049 2050 if (format || target || mipmap) { 2051 /* texture from pixmap */ 2052 b = XMesaCreatePixmapTextureBuffer(v, pixmap, 0, format, target, mipmap); 2053 } 2054 else { 2055 b = XMesaCreatePixmapBuffer( v, pixmap, 0 ); 2056 } 2057 if (!b) { 2058 return 0; 2059 } 2060 2061 return pixmap; 2062} 2063 2064 2065PUBLIC void 2066glXDestroyPixmap( Display *dpy, GLXPixmap pixmap ) 2067{ 2068 XMesaBuffer b = XMesaFindBuffer(dpy, (Drawable)pixmap); 2069 if (b) 2070 XMesaDestroyBuffer(b); 2071 /* don't destroy X pixmap */ 2072} 2073 2074 2075PUBLIC GLXPbuffer 2076glXCreatePbuffer(Display *dpy, GLXFBConfig config, const int *attribList) 2077{ 2078 XMesaVisual xmvis = (XMesaVisual) config; 2079 XMesaBuffer xmbuf; 2080 const int *attrib; 2081 int width = 0, height = 0; 2082 GLboolean useLargest = GL_FALSE, preserveContents = GL_FALSE; 2083 2084 (void) dpy; 2085 2086 for (attrib = attribList; *attrib; attrib++) { 2087 switch (*attrib) { 2088 case GLX_PBUFFER_WIDTH: 2089 attrib++; 2090 width = *attrib; 2091 break; 2092 case GLX_PBUFFER_HEIGHT: 2093 attrib++; 2094 height = *attrib; 2095 break; 2096 case GLX_PRESERVED_CONTENTS: 2097 attrib++; 2098 preserveContents = *attrib; 2099 break; 2100 case GLX_LARGEST_PBUFFER: 2101 attrib++; 2102 useLargest = *attrib; 2103 break; 2104 default: 2105 return 0; 2106 } 2107 } 2108 2109 if (width == 0 || height == 0) 2110 return 0; 2111 2112 if (width > PBUFFER_MAX_SIZE || height > PBUFFER_MAX_SIZE) { 2113 /* If allocation would have failed and GLX_LARGEST_PBUFFER is set, 2114 * allocate the largest possible buffer. 2115 */ 2116 if (useLargest) { 2117 width = PBUFFER_MAX_SIZE; 2118 height = PBUFFER_MAX_SIZE; 2119 } 2120 } 2121 2122 xmbuf = XMesaCreatePBuffer( xmvis, 0, width, height); 2123 /* A GLXPbuffer handle must be an X Drawable because that's what 2124 * glXMakeCurrent takes. 2125 */ 2126 if (xmbuf) { 2127 xmbuf->largestPbuffer = useLargest; 2128 xmbuf->preservedContents = preserveContents; 2129 return (GLXPbuffer) xmbuf->ws.drawable; 2130 } 2131 else { 2132 return 0; 2133 } 2134} 2135 2136 2137PUBLIC void 2138glXDestroyPbuffer( Display *dpy, GLXPbuffer pbuf ) 2139{ 2140 XMesaBuffer b = XMesaFindBuffer(dpy, pbuf); 2141 if (b) { 2142 XMesaDestroyBuffer(b); 2143 } 2144} 2145 2146 2147PUBLIC void 2148glXQueryDrawable(Display *dpy, GLXDrawable draw, int attribute, 2149 unsigned int *value) 2150{ 2151 GLuint width, height; 2152 XMesaBuffer xmbuf = XMesaFindBuffer(dpy, draw); 2153 if (!xmbuf) { 2154 generate_error(dpy, GLXBadDrawable, draw, X_GLXGetDrawableAttributes, False); 2155 return; 2156 } 2157 2158 /* make sure buffer's dimensions are up to date */ 2159 xmesa_get_window_size(dpy, xmbuf, &width, &height); 2160 2161 switch (attribute) { 2162 case GLX_WIDTH: 2163 *value = width; 2164 break; 2165 case GLX_HEIGHT: 2166 *value = height; 2167 break; 2168 case GLX_PRESERVED_CONTENTS: 2169 *value = xmbuf->preservedContents; 2170 break; 2171 case GLX_LARGEST_PBUFFER: 2172 *value = xmbuf->largestPbuffer; 2173 break; 2174 case GLX_FBCONFIG_ID: 2175 *value = xmbuf->xm_visual->visinfo->visualid; 2176 return; 2177 case GLX_TEXTURE_FORMAT_EXT: 2178 *value = xmbuf->TextureFormat; 2179 break; 2180 case GLX_TEXTURE_TARGET_EXT: 2181 *value = xmbuf->TextureTarget; 2182 break; 2183 case GLX_MIPMAP_TEXTURE_EXT: 2184 *value = xmbuf->TextureMipmap; 2185 break; 2186 2187 default: 2188 generate_error(dpy, BadValue, 0, X_GLXCreateContextAttribsARB, true); 2189 return; 2190 } 2191} 2192 2193 2194PUBLIC GLXContext 2195glXCreateNewContext( Display *dpy, GLXFBConfig config, 2196 int renderType, GLXContext shareCtx, Bool direct ) 2197{ 2198 XMesaVisual xmvis = (XMesaVisual) config; 2199 2200 if (!dpy || !config || 2201 (renderType != GLX_RGBA_TYPE && renderType != GLX_COLOR_INDEX_TYPE)) 2202 return 0; 2203 2204 return create_context(dpy, xmvis, 2205 shareCtx ? shareCtx->xmesaContext : NULL, 2206 direct, 2207 1, 0, GLX_CONTEXT_COMPATIBILITY_PROFILE_BIT_ARB, 0x0); 2208} 2209 2210 2211PUBLIC int 2212glXQueryContext( Display *dpy, GLXContext ctx, int attribute, int *value ) 2213{ 2214 GLXContext glxCtx = ctx; 2215 XMesaContext xmctx = glxCtx->xmesaContext; 2216 2217 (void) dpy; 2218 (void) ctx; 2219 2220 switch (attribute) { 2221 case GLX_FBCONFIG_ID: 2222 *value = xmctx->xm_visual->visinfo->visualid; 2223 break; 2224 case GLX_RENDER_TYPE: 2225 if (xmctx->xm_visual->mesa_visual.rgbMode) 2226 *value = GLX_RGBA_TYPE; 2227 else 2228 *value = GLX_COLOR_INDEX_TYPE; 2229 break; 2230 case GLX_SCREEN: 2231 *value = 0; 2232 return Success; 2233 default: 2234 return GLX_BAD_ATTRIBUTE; 2235 } 2236 return 0; 2237} 2238 2239 2240PUBLIC void 2241glXSelectEvent( Display *dpy, GLXDrawable drawable, unsigned long mask ) 2242{ 2243 XMesaBuffer xmbuf = XMesaFindBuffer(dpy, drawable); 2244 if (xmbuf) 2245 xmbuf->selectedEvents = mask; 2246} 2247 2248 2249PUBLIC void 2250glXGetSelectedEvent(Display *dpy, GLXDrawable drawable, unsigned long *mask) 2251{ 2252 XMesaBuffer xmbuf = XMesaFindBuffer(dpy, drawable); 2253 if (xmbuf) 2254 *mask = xmbuf->selectedEvents; 2255 else 2256 *mask = 0; 2257} 2258 2259 2260 2261/*** GLX_SGI_swap_control ***/ 2262 2263PUBLIC int 2264glXSwapIntervalSGI(int interval) 2265{ 2266 (void) interval; 2267 return 0; 2268} 2269 2270 2271 2272/*** GLX_SGI_video_sync ***/ 2273 2274static unsigned int FrameCounter = 0; 2275 2276PUBLIC int 2277glXGetVideoSyncSGI(unsigned int *count) 2278{ 2279 /* this is a bogus implementation */ 2280 *count = FrameCounter++; 2281 return 0; 2282} 2283 2284PUBLIC int 2285glXWaitVideoSyncSGI(int divisor, int remainder, unsigned int *count) 2286{ 2287 if (divisor <= 0 || remainder < 0) 2288 return GLX_BAD_VALUE; 2289 /* this is a bogus implementation */ 2290 FrameCounter++; 2291 while (FrameCounter % divisor != remainder) 2292 FrameCounter++; 2293 *count = FrameCounter; 2294 return 0; 2295} 2296 2297 2298 2299/*** GLX_SGI_make_current_read ***/ 2300 2301PUBLIC Bool 2302glXMakeCurrentReadSGI(Display *dpy, GLXDrawable draw, GLXDrawable read, 2303 GLXContext ctx) 2304{ 2305 return glXMakeContextCurrent( dpy, draw, read, ctx ); 2306} 2307 2308/* not used 2309static GLXDrawable 2310glXGetCurrentReadDrawableSGI(void) 2311{ 2312 return 0; 2313} 2314*/ 2315 2316 2317/*** GLX_SGIX_video_source ***/ 2318#if defined(_VL_H) 2319 2320PUBLIC GLXVideoSourceSGIX 2321glXCreateGLXVideoSourceSGIX(Display *dpy, int screen, VLServer server, 2322 VLPath path, int nodeClass, VLNode drainNode) 2323{ 2324 (void) dpy; 2325 (void) screen; 2326 (void) server; 2327 (void) path; 2328 (void) nodeClass; 2329 (void) drainNode; 2330 return 0; 2331} 2332 2333PUBLIC void 2334glXDestroyGLXVideoSourceSGIX(Display *dpy, GLXVideoSourceSGIX src) 2335{ 2336 (void) dpy; 2337 (void) src; 2338} 2339 2340#endif 2341 2342 2343/*** GLX_EXT_import_context ***/ 2344 2345PUBLIC void 2346glXFreeContextEXT(Display *dpy, GLXContext context) 2347{ 2348 (void) dpy; 2349 (void) context; 2350} 2351 2352PUBLIC GLXContextID 2353glXGetContextIDEXT(const GLXContext context) 2354{ 2355 (void) context; 2356 return 0; 2357} 2358 2359PUBLIC GLXContext 2360glXImportContextEXT(Display *dpy, GLXContextID contextID) 2361{ 2362 (void) dpy; 2363 (void) contextID; 2364 return 0; 2365} 2366 2367PUBLIC int 2368glXQueryContextInfoEXT(Display *dpy, GLXContext context, int attribute, 2369 int *value) 2370{ 2371 (void) dpy; 2372 (void) context; 2373 (void) attribute; 2374 (void) value; 2375 return 0; 2376} 2377 2378 2379 2380/*** GLX_SGIX_fbconfig ***/ 2381 2382PUBLIC int 2383glXGetFBConfigAttribSGIX(Display *dpy, GLXFBConfigSGIX config, 2384 int attribute, int *value) 2385{ 2386 return glXGetFBConfigAttrib(dpy, config, attribute, value); 2387} 2388 2389PUBLIC GLXFBConfigSGIX * 2390glXChooseFBConfigSGIX(Display *dpy, int screen, int *attrib_list, 2391 int *nelements) 2392{ 2393 return (GLXFBConfig *) glXChooseFBConfig(dpy, screen, 2394 attrib_list, nelements); 2395} 2396 2397 2398PUBLIC GLXPixmap 2399glXCreateGLXPixmapWithConfigSGIX(Display *dpy, GLXFBConfigSGIX config, 2400 Pixmap pixmap) 2401{ 2402 XMesaVisual xmvis = (XMesaVisual) config; 2403 XMesaBuffer xmbuf = XMesaCreatePixmapBuffer(xmvis, pixmap, 0); 2404 return xmbuf->ws.drawable; /* need to return an X ID */ 2405} 2406 2407 2408PUBLIC GLXContext 2409glXCreateContextWithConfigSGIX(Display *dpy, GLXFBConfigSGIX config, 2410 int renderType, GLXContext shareCtx, 2411 Bool direct) 2412{ 2413 XMesaVisual xmvis = (XMesaVisual) config; 2414 2415 if (!dpy || !config || 2416 (renderType != GLX_RGBA_TYPE && renderType != GLX_COLOR_INDEX_TYPE)) 2417 return 0; 2418 2419 return create_context(dpy, xmvis, 2420 shareCtx ? shareCtx->xmesaContext : NULL, 2421 direct, 2422 1, 0, GLX_CONTEXT_COMPATIBILITY_PROFILE_BIT_ARB, 0x0); 2423} 2424 2425 2426PUBLIC XVisualInfo * 2427glXGetVisualFromFBConfigSGIX(Display *dpy, GLXFBConfigSGIX config) 2428{ 2429 return glXGetVisualFromFBConfig(dpy, config); 2430} 2431 2432 2433PUBLIC GLXFBConfigSGIX 2434glXGetFBConfigFromVisualSGIX(Display *dpy, XVisualInfo *vis) 2435{ 2436 XMesaVisual xmvis = find_glx_visual(dpy, vis); 2437 if (!xmvis) { 2438 /* This visual wasn't found with glXChooseVisual() */ 2439 xmvis = create_glx_visual(dpy, vis); 2440 } 2441 2442 return (GLXFBConfigSGIX) xmvis; 2443} 2444 2445 2446 2447/*** GLX_SGIX_pbuffer ***/ 2448 2449PUBLIC GLXPbufferSGIX 2450glXCreateGLXPbufferSGIX(Display *dpy, GLXFBConfigSGIX config, 2451 unsigned int width, unsigned int height, 2452 int *attribList) 2453{ 2454 XMesaVisual xmvis = (XMesaVisual) config; 2455 XMesaBuffer xmbuf; 2456 const int *attrib; 2457 GLboolean useLargest = GL_FALSE, preserveContents = GL_FALSE; 2458 2459 (void) dpy; 2460 2461 for (attrib = attribList; attrib && *attrib; attrib++) { 2462 switch (*attrib) { 2463 case GLX_PRESERVED_CONTENTS_SGIX: 2464 attrib++; 2465 preserveContents = *attrib; /* ignored */ 2466 break; 2467 case GLX_LARGEST_PBUFFER_SGIX: 2468 attrib++; 2469 useLargest = *attrib; /* ignored */ 2470 break; 2471 default: 2472 return 0; 2473 } 2474 } 2475 2476 /* not used at this time */ 2477 (void) useLargest; 2478 (void) preserveContents; 2479 2480 xmbuf = XMesaCreatePBuffer( xmvis, 0, width, height); 2481 /* A GLXPbuffer handle must be an X Drawable because that's what 2482 * glXMakeCurrent takes. 2483 */ 2484 return (GLXPbuffer) xmbuf->ws.drawable; 2485} 2486 2487 2488PUBLIC void 2489glXDestroyGLXPbufferSGIX(Display *dpy, GLXPbufferSGIX pbuf) 2490{ 2491 XMesaBuffer xmbuf = XMesaFindBuffer(dpy, pbuf); 2492 if (xmbuf) { 2493 XMesaDestroyBuffer(xmbuf); 2494 } 2495} 2496 2497 2498PUBLIC int 2499glXQueryGLXPbufferSGIX(Display *dpy, GLXPbufferSGIX pbuf, int attribute, 2500 unsigned int *value) 2501{ 2502 const XMesaBuffer xmbuf = XMesaFindBuffer(dpy, pbuf); 2503 2504 if (!xmbuf) { 2505 /* Generate GLXBadPbufferSGIX for bad pbuffer */ 2506 return 0; 2507 } 2508 2509 switch (attribute) { 2510 case GLX_PRESERVED_CONTENTS_SGIX: 2511 *value = True; 2512 break; 2513 case GLX_LARGEST_PBUFFER_SGIX: 2514 *value = xmesa_buffer_width(xmbuf) * xmesa_buffer_height(xmbuf); 2515 break; 2516 case GLX_WIDTH_SGIX: 2517 *value = xmesa_buffer_width(xmbuf); 2518 break; 2519 case GLX_HEIGHT_SGIX: 2520 *value = xmesa_buffer_height(xmbuf); 2521 break; 2522 case GLX_EVENT_MASK_SGIX: 2523 *value = 0; /* XXX might be wrong */ 2524 break; 2525 default: 2526 *value = 0; 2527 } 2528 return 0; 2529} 2530 2531 2532PUBLIC void 2533glXSelectEventSGIX(Display *dpy, GLXDrawable drawable, unsigned long mask) 2534{ 2535 XMesaBuffer xmbuf = XMesaFindBuffer(dpy, drawable); 2536 if (xmbuf) { 2537 /* Note: we'll never generate clobber events */ 2538 xmbuf->selectedEvents = mask; 2539 } 2540} 2541 2542 2543PUBLIC void 2544glXGetSelectedEventSGIX(Display *dpy, GLXDrawable drawable, 2545 unsigned long *mask) 2546{ 2547 XMesaBuffer xmbuf = XMesaFindBuffer(dpy, drawable); 2548 if (xmbuf) { 2549 *mask = xmbuf->selectedEvents; 2550 } 2551 else { 2552 *mask = 0; 2553 } 2554} 2555 2556 2557 2558/*** GLX_SGI_cushion ***/ 2559 2560PUBLIC void 2561glXCushionSGI(Display *dpy, Window win, float cushion) 2562{ 2563 (void) dpy; 2564 (void) win; 2565 (void) cushion; 2566} 2567 2568 2569 2570/*** GLX_SGIX_video_resize ***/ 2571 2572PUBLIC int 2573glXBindChannelToWindowSGIX(Display *dpy, int screen, int channel, 2574 Window window) 2575{ 2576 (void) dpy; 2577 (void) screen; 2578 (void) channel; 2579 (void) window; 2580 return 0; 2581} 2582 2583PUBLIC int 2584glXChannelRectSGIX(Display *dpy, int screen, int channel, 2585 int x, int y, int w, int h) 2586{ 2587 (void) dpy; 2588 (void) screen; 2589 (void) channel; 2590 (void) x; 2591 (void) y; 2592 (void) w; 2593 (void) h; 2594 return 0; 2595} 2596 2597PUBLIC int 2598glXQueryChannelRectSGIX(Display *dpy, int screen, int channel, 2599 int *x, int *y, int *w, int *h) 2600{ 2601 (void) dpy; 2602 (void) screen; 2603 (void) channel; 2604 (void) x; 2605 (void) y; 2606 (void) w; 2607 (void) h; 2608 return 0; 2609} 2610 2611PUBLIC int 2612glXQueryChannelDeltasSGIX(Display *dpy, int screen, int channel, 2613 int *dx, int *dy, int *dw, int *dh) 2614{ 2615 (void) dpy; 2616 (void) screen; 2617 (void) channel; 2618 (void) dx; 2619 (void) dy; 2620 (void) dw; 2621 (void) dh; 2622 return 0; 2623} 2624 2625PUBLIC int 2626glXChannelRectSyncSGIX(Display *dpy, int screen, int channel, GLenum synctype) 2627{ 2628 (void) dpy; 2629 (void) screen; 2630 (void) channel; 2631 (void) synctype; 2632 return 0; 2633} 2634 2635 2636 2637/*** GLX_SGIX_dmbuffer **/ 2638 2639#if defined(_DM_BUFFER_H_) 2640PUBLIC Bool 2641glXAssociateDMPbufferSGIX(Display *dpy, GLXPbufferSGIX pbuffer, 2642 DMparams *params, DMbuffer dmbuffer) 2643{ 2644 (void) dpy; 2645 (void) pbuffer; 2646 (void) params; 2647 (void) dmbuffer; 2648 return False; 2649} 2650#endif 2651 2652 2653/*** GLX_SUN_get_transparent_index ***/ 2654 2655PUBLIC Status 2656glXGetTransparentIndexSUN(Display *dpy, Window overlay, Window underlay, 2657 long *pTransparent) 2658{ 2659 (void) dpy; 2660 (void) overlay; 2661 (void) underlay; 2662 (void) pTransparent; 2663 return 0; 2664} 2665 2666 2667 2668/*** GLX_MESA_release_buffers ***/ 2669 2670/* 2671 * Release the depth, stencil, accum buffers attached to a GLXDrawable 2672 * (a window or pixmap) prior to destroying the GLXDrawable. 2673 */ 2674PUBLIC Bool 2675glXReleaseBuffersMESA( Display *dpy, GLXDrawable d ) 2676{ 2677 XMesaBuffer b = XMesaFindBuffer(dpy, d); 2678 if (b) { 2679 XMesaDestroyBuffer(b); 2680 return True; 2681 } 2682 return False; 2683} 2684 2685/*** GLX_EXT_texture_from_pixmap ***/ 2686 2687PUBLIC void 2688glXBindTexImageEXT(Display *dpy, GLXDrawable drawable, int buffer, 2689 const int *attrib_list) 2690{ 2691 XMesaBuffer b = XMesaFindBuffer(dpy, drawable); 2692 if (b) 2693 XMesaBindTexImage(dpy, b, buffer, attrib_list); 2694} 2695 2696PUBLIC void 2697glXReleaseTexImageEXT(Display *dpy, GLXDrawable drawable, int buffer) 2698{ 2699 XMesaBuffer b = XMesaFindBuffer(dpy, drawable); 2700 if (b) 2701 XMesaReleaseTexImage(dpy, b, buffer); 2702} 2703 2704 2705 2706/*** GLX_ARB_create_context ***/ 2707 2708 2709GLXContext 2710glXCreateContextAttribsARB(Display *dpy, GLXFBConfig config, 2711 GLXContext shareCtx, Bool direct, 2712 const int *attrib_list) 2713{ 2714 XMesaVisual xmvis = (XMesaVisual) config; 2715 int majorVersion = 1, minorVersion = 0; 2716 int contextFlags = 0x0; 2717 int profileMask = GLX_CONTEXT_CORE_PROFILE_BIT_ARB; 2718 int renderType = GLX_RGBA_TYPE; 2719 unsigned i; 2720 Bool done = False; 2721 const int contextFlagsAll = (GLX_CONTEXT_DEBUG_BIT_ARB | 2722 GLX_CONTEXT_FORWARD_COMPATIBLE_BIT_ARB); 2723 GLXContext ctx; 2724 2725 /* parse attrib_list */ 2726 for (i = 0; !done && attrib_list && attrib_list[i]; i++) { 2727 switch (attrib_list[i]) { 2728 case GLX_CONTEXT_MAJOR_VERSION_ARB: 2729 majorVersion = attrib_list[++i]; 2730 break; 2731 case GLX_CONTEXT_MINOR_VERSION_ARB: 2732 minorVersion = attrib_list[++i]; 2733 break; 2734 case GLX_CONTEXT_FLAGS_ARB: 2735 contextFlags = attrib_list[++i]; 2736 break; 2737 case GLX_CONTEXT_PROFILE_MASK_ARB: 2738 profileMask = attrib_list[++i]; 2739 break; 2740 case GLX_RENDER_TYPE: 2741 renderType = attrib_list[++i]; 2742 break; 2743 case 0: 2744 /* end of list */ 2745 done = True; 2746 break; 2747 default: 2748 /* bad attribute */ 2749 generate_error(dpy, BadValue, 0, X_GLXCreateContextAttribsARB, True); 2750 return NULL; 2751 } 2752 } 2753 2754 /* check contextFlags */ 2755 if (contextFlags & ~contextFlagsAll) { 2756 generate_error(dpy, BadValue, 0, X_GLXCreateContextAttribsARB, True); 2757 return NULL; 2758 } 2759 2760 /* check profileMask */ 2761 if (profileMask != GLX_CONTEXT_CORE_PROFILE_BIT_ARB && 2762 profileMask != GLX_CONTEXT_COMPATIBILITY_PROFILE_BIT_ARB && 2763 profileMask != GLX_CONTEXT_ES_PROFILE_BIT_EXT) { 2764 generate_error(dpy, GLXBadProfileARB, 0, X_GLXCreateContextAttribsARB, False); 2765 return NULL; 2766 } 2767 2768 /* check renderType */ 2769 if (renderType != GLX_RGBA_TYPE && 2770 renderType != GLX_COLOR_INDEX_TYPE) { 2771 generate_error(dpy, BadValue, 0, X_GLXCreateContextAttribsARB, True); 2772 return NULL; 2773 } 2774 2775 /* check version */ 2776 if (majorVersion <= 0 || 2777 minorVersion < 0 || 2778 (profileMask != GLX_CONTEXT_ES_PROFILE_BIT_EXT && 2779 ((majorVersion == 1 && minorVersion > 5) || 2780 (majorVersion == 2 && minorVersion > 1) || 2781 (majorVersion == 3 && minorVersion > 3) || 2782 (majorVersion == 4 && minorVersion > 5) || 2783 majorVersion > 4))) { 2784 generate_error(dpy, BadMatch, 0, X_GLXCreateContextAttribsARB, True); 2785 return NULL; 2786 } 2787 if (profileMask == GLX_CONTEXT_ES_PROFILE_BIT_EXT && 2788 ((majorVersion == 1 && minorVersion > 1) || 2789 (majorVersion == 2 && minorVersion > 0) || 2790 (majorVersion == 3 && minorVersion > 1) || 2791 majorVersion > 3)) { 2792 /* GLX_EXT_create_context_es2_profile says nothing to justifying a 2793 * different error code for invalid ES versions, but this is what NVIDIA 2794 * does and piglit expects. 2795 */ 2796 generate_error(dpy, GLXBadProfileARB, 0, X_GLXCreateContextAttribsARB, False); 2797 return NULL; 2798 } 2799 2800 if ((contextFlags & GLX_CONTEXT_FORWARD_COMPATIBLE_BIT_ARB) && 2801 majorVersion < 3) { 2802 generate_error(dpy, BadMatch, 0, X_GLXCreateContextAttribsARB, True); 2803 return NULL; 2804 } 2805 2806 if (renderType == GLX_COLOR_INDEX_TYPE && majorVersion >= 3) { 2807 generate_error(dpy, BadMatch, 0, X_GLXCreateContextAttribsARB, True); 2808 return NULL; 2809 } 2810 2811 ctx = create_context(dpy, xmvis, 2812 shareCtx ? shareCtx->xmesaContext : NULL, 2813 direct, 2814 majorVersion, minorVersion, 2815 profileMask, contextFlags); 2816 if (!ctx) { 2817 generate_error(dpy, GLXBadFBConfig, 0, X_GLXCreateContextAttribsARB, False); 2818 } 2819 2820 return ctx; 2821} 2822