glxcmds.c revision 4dbd13cb3f5aeff6ddc85fd091b4677369c19778
1/* 2 * SGI FREE SOFTWARE LICENSE B (Version 2.0, Sept. 18, 2008) 3 * Copyright (C) 1991-2000 Silicon Graphics, Inc. All Rights Reserved. 4 * 5 * Permission is hereby granted, free of charge, to any person obtaining a 6 * copy of this software and associated documentation files (the "Software"), 7 * to deal in the Software without restriction, including without limitation 8 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 9 * and/or sell copies of the Software, and to permit persons to whom the 10 * Software is furnished to do so, subject to the following conditions: 11 * 12 * The above copyright notice including the dates of first publication and 13 * either this permission notice or a reference to 14 * http://oss.sgi.com/projects/FreeB/ 15 * shall be included in all copies or substantial portions of the Software. 16 * 17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS 18 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 20 * SILICON GRAPHICS, INC. BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, 21 * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF 22 * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 23 * SOFTWARE. 24 * 25 * Except as contained in this notice, the name of Silicon Graphics, Inc. 26 * shall not be used in advertising or otherwise to promote the sale, use or 27 * other dealings in this Software without prior written authorization from 28 * Silicon Graphics, Inc. 29 */ 30 31/** 32 * \file glxcmds.c 33 * Client-side GLX interface. 34 */ 35 36#include "glxclient.h" 37#include "glapi.h" 38#include "glxextensions.h" 39#include "indirect.h" 40 41#ifdef GLX_DIRECT_RENDERING 42#ifdef GLX_USE_APPLEGL 43#include "apple_glx_context.h" 44#include "apple_glx.h" 45#include "glx_error.h" 46#else 47#include <sys/time.h> 48#ifdef XF86VIDMODE 49#include <X11/extensions/xf86vmode.h> 50#endif 51#include "xf86dri.h" 52#endif 53#else 54#endif 55 56#if defined(USE_XCB) 57#include <X11/Xlib-xcb.h> 58#include <xcb/xcb.h> 59#include <xcb/glx.h> 60#endif 61 62static const char __glXGLXClientVendorName[] = "Mesa Project and SGI"; 63static const char __glXGLXClientVersion[] = "1.4"; 64 65#if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL) 66 67/** 68 * Get the __DRIdrawable for the drawable associated with a GLXContext 69 * 70 * \param dpy The display associated with \c drawable. 71 * \param drawable GLXDrawable whose __DRIdrawable part is to be retrieved. 72 * \param scrn_num If non-NULL, the drawables screen is stored there 73 * \returns A pointer to the context's __DRIdrawable on success, or NULL if 74 * the drawable is not associated with a direct-rendering context. 75 */ 76_X_HIDDEN __GLXDRIdrawable * 77GetGLXDRIDrawable(Display * dpy, GLXDrawable drawable) 78{ 79 struct glx_display *priv = __glXInitialize(dpy); 80 __GLXDRIdrawable *pdraw; 81 82 if (priv == NULL) 83 return NULL; 84 85 if (__glxHashLookup(priv->drawHash, drawable, (void *) &pdraw) == 0) 86 return pdraw; 87 88 return NULL; 89} 90 91#endif 92 93_X_HIDDEN struct glx_drawable * 94GetGLXDrawable(Display *dpy, GLXDrawable drawable) 95{ 96 struct glx_display *priv = __glXInitialize(dpy); 97 struct glx_drawable *glxDraw; 98 99 if (priv == NULL) 100 return NULL; 101 102 if (__glxHashLookup(priv->glXDrawHash, drawable, (void *) &glxDraw) == 0) 103 return glxDraw; 104 105 return NULL; 106} 107 108_X_HIDDEN int 109InitGLXDrawable(Display *dpy, struct glx_drawable *glxDraw, XID xDrawable, 110 GLXDrawable drawable) 111{ 112 struct glx_display *priv = __glXInitialize(dpy); 113 114 if (!priv) 115 return -1; 116 117 glxDraw->xDrawable = xDrawable; 118 glxDraw->drawable = drawable; 119 glxDraw->lastEventSbc = 0; 120 glxDraw->eventSbcWrap = 0; 121 122 return __glxHashInsert(priv->glXDrawHash, drawable, glxDraw); 123} 124 125_X_HIDDEN void 126DestroyGLXDrawable(Display *dpy, GLXDrawable drawable) 127{ 128 struct glx_display *priv = __glXInitialize(dpy); 129 struct glx_drawable *glxDraw; 130 131 if (!priv) 132 return; 133 134 glxDraw = GetGLXDrawable(dpy, drawable); 135 __glxHashDelete(priv->glXDrawHash, drawable); 136 free(glxDraw); 137} 138 139/** 140 * Get the GLX per-screen data structure associated with a GLX context. 141 * 142 * \param dpy Display for which the GLX per-screen information is to be 143 * retrieved. 144 * \param scrn Screen on \c dpy for which the GLX per-screen information is 145 * to be retrieved. 146 * \returns A pointer to the GLX per-screen data if \c dpy and \c scrn 147 * specify a valid GLX screen, or NULL otherwise. 148 * 149 * \todo Should this function validate that \c scrn is within the screen 150 * number range for \c dpy? 151 */ 152 153static struct glx_screen * 154GetGLXScreenConfigs(Display * dpy, int scrn) 155{ 156 struct glx_display *const priv = __glXInitialize(dpy); 157 158 return (priv 159 && priv->screens != 160 NULL) ? priv->screens[scrn] : NULL; 161} 162 163 164static int 165GetGLXPrivScreenConfig(Display * dpy, int scrn, struct glx_display ** ppriv, 166 struct glx_screen ** ppsc) 167{ 168 /* Initialize the extension, if needed . This has the added value 169 * of initializing/allocating the display private 170 */ 171 172 if (dpy == NULL) { 173 return GLX_NO_EXTENSION; 174 } 175 176 *ppriv = __glXInitialize(dpy); 177 if (*ppriv == NULL) { 178 return GLX_NO_EXTENSION; 179 } 180 181 /* Check screen number to see if its valid */ 182 if ((scrn < 0) || (scrn >= ScreenCount(dpy))) { 183 return GLX_BAD_SCREEN; 184 } 185 186 /* Check to see if the GL is supported on this screen */ 187 *ppsc = (*ppriv)->screens[scrn]; 188 if ((*ppsc)->configs == NULL) { 189 /* No support for GL on this screen regardless of visual */ 190 return GLX_BAD_VISUAL; 191 } 192 193 return Success; 194} 195 196 197/** 198 * Determine if a \c GLXFBConfig supplied by the application is valid. 199 * 200 * \param dpy Application supplied \c Display pointer. 201 * \param config Application supplied \c GLXFBConfig. 202 * 203 * \returns If the \c GLXFBConfig is valid, the a pointer to the matching 204 * \c struct glx_config structure is returned. Otherwise, \c NULL 205 * is returned. 206 */ 207static struct glx_config * 208ValidateGLXFBConfig(Display * dpy, GLXFBConfig fbconfig) 209{ 210 struct glx_display *const priv = __glXInitialize(dpy); 211 int num_screens = ScreenCount(dpy); 212 unsigned i; 213 struct glx_config *config; 214 215 if (priv != NULL) { 216 for (i = 0; i < num_screens; i++) { 217 for (config = priv->screens[i]->configs; config != NULL; 218 config = config->next) { 219 if (config == (struct glx_config *) fbconfig) { 220 return config; 221 } 222 } 223 } 224 } 225 226 return NULL; 227} 228 229_X_HIDDEN Bool 230glx_context_init(struct glx_context *gc, 231 struct glx_screen *psc, struct glx_config *config) 232{ 233 gc->majorOpcode = __glXSetupForCommand(psc->display->dpy); 234 if (!gc->majorOpcode) 235 return GL_FALSE; 236 237 gc->screen = psc->scr; 238 gc->psc = psc; 239 gc->config = config; 240 gc->isDirect = GL_TRUE; 241 gc->currentContextTag = -1; 242 243 return GL_TRUE; 244} 245 246 247/** 248 * Create a new context. 249 * 250 * \param renderType For FBConfigs, what is the rendering type? 251 */ 252 253static GLXContext 254CreateContext(Display *dpy, int generic_id, struct glx_config *config, 255 GLXContext shareList_user, Bool allowDirect, 256 unsigned code, int renderType, int screen) 257{ 258 struct glx_context *gc; 259 struct glx_screen *psc; 260 struct glx_context *shareList = (struct glx_context *) shareList_user; 261 if (dpy == NULL) 262 return NULL; 263 264 psc = GetGLXScreenConfigs(dpy, screen); 265 if (psc == NULL) 266 return NULL; 267 268 if (generic_id == None) 269 return NULL; 270 271 gc = NULL; 272#ifdef GLX_USE_APPLEGL 273 gc = applegl_create_context(psc, config, shareList, renderType); 274#else 275 if (allowDirect && psc->vtable->create_context) 276 gc = psc->vtable->create_context(psc, config, shareList, renderType); 277 if (!gc) 278 gc = indirect_create_context(psc, config, shareList, renderType); 279#endif 280 if (!gc) 281 return NULL; 282 283 LockDisplay(dpy); 284 switch (code) { 285 case X_GLXCreateContext: { 286 xGLXCreateContextReq *req; 287 288 /* Send the glXCreateContext request */ 289 GetReq(GLXCreateContext, req); 290 req->reqType = gc->majorOpcode; 291 req->glxCode = X_GLXCreateContext; 292 req->context = gc->xid = XAllocID(dpy); 293 req->visual = generic_id; 294 req->screen = screen; 295 req->shareList = shareList ? shareList->xid : None; 296 req->isDirect = gc->isDirect; 297 break; 298 } 299 300 case X_GLXCreateNewContext: { 301 xGLXCreateNewContextReq *req; 302 303 /* Send the glXCreateNewContext request */ 304 GetReq(GLXCreateNewContext, req); 305 req->reqType = gc->majorOpcode; 306 req->glxCode = X_GLXCreateNewContext; 307 req->context = gc->xid = XAllocID(dpy); 308 req->fbconfig = generic_id; 309 req->screen = screen; 310 req->renderType = renderType; 311 req->shareList = shareList ? shareList->xid : None; 312 req->isDirect = gc->isDirect; 313 break; 314 } 315 316 case X_GLXvop_CreateContextWithConfigSGIX: { 317 xGLXVendorPrivateWithReplyReq *vpreq; 318 xGLXCreateContextWithConfigSGIXReq *req; 319 320 /* Send the glXCreateNewContext request */ 321 GetReqExtra(GLXVendorPrivateWithReply, 322 sz_xGLXCreateContextWithConfigSGIXReq - 323 sz_xGLXVendorPrivateWithReplyReq, vpreq); 324 req = (xGLXCreateContextWithConfigSGIXReq *) vpreq; 325 req->reqType = gc->majorOpcode; 326 req->glxCode = X_GLXVendorPrivateWithReply; 327 req->vendorCode = X_GLXvop_CreateContextWithConfigSGIX; 328 req->context = gc->xid = XAllocID(dpy); 329 req->fbconfig = generic_id; 330 req->screen = screen; 331 req->renderType = renderType; 332 req->shareList = shareList ? shareList->xid : None; 333 req->isDirect = gc->isDirect; 334 break; 335 } 336 337 default: 338 /* What to do here? This case is the sign of an internal error. It 339 * should never be reachable. 340 */ 341 break; 342 } 343 344 UnlockDisplay(dpy); 345 SyncHandle(); 346 347 gc->imported = GL_FALSE; 348 gc->renderType = renderType; 349 350 return (GLXContext) gc; 351} 352 353_X_EXPORT GLXContext 354glXCreateContext(Display * dpy, XVisualInfo * vis, 355 GLXContext shareList, Bool allowDirect) 356{ 357 struct glx_config *config = NULL; 358 int renderType = 0; 359 360#if defined(GLX_DIRECT_RENDERING) || defined(GLX_USE_APPLEGL) 361 struct glx_screen *const psc = GetGLXScreenConfigs(dpy, vis->screen); 362 363 config = glx_config_find_visual(psc->visuals, vis->visualid); 364 if (config == NULL) { 365 xError error; 366 367 error.errorCode = BadValue; 368 error.resourceID = vis->visualid; 369 error.sequenceNumber = dpy->request; 370 error.type = X_Error; 371 error.majorCode = __glXSetupForCommand(dpy); 372 error.minorCode = X_GLXCreateContext; 373 _XError(dpy, &error); 374 return None; 375 } 376 377 renderType = config->rgbMode ? GLX_RGBA_TYPE : GLX_COLOR_INDEX_TYPE; 378#endif 379 380 return CreateContext(dpy, vis->visualid, config, shareList, allowDirect, 381 X_GLXCreateContext, renderType, vis->screen); 382} 383 384static void 385glx_send_destroy_context(Display *dpy, XID xid) 386{ 387 CARD8 opcode = __glXSetupForCommand(dpy); 388 xGLXDestroyContextReq *req; 389 390 LockDisplay(dpy); 391 GetReq(GLXDestroyContext, req); 392 req->reqType = opcode; 393 req->glxCode = X_GLXDestroyContext; 394 req->context = xid; 395 UnlockDisplay(dpy); 396 SyncHandle(); 397} 398 399/* 400** Destroy the named context 401*/ 402 403_X_EXPORT void 404glXDestroyContext(Display * dpy, GLXContext ctx) 405{ 406 struct glx_context *gc = (struct glx_context *) ctx; 407 408 if (gc == NULL || gc->xid == None) 409 return; 410 411 __glXLock(); 412 if (!gc->imported) 413 glx_send_destroy_context(dpy, gc->xid); 414 415 if (gc->currentDpy) { 416 /* This context is bound to some thread. According to the man page, 417 * we should not actually delete the context until it's unbound. 418 * Note that we set gc->xid = None above. In MakeContextCurrent() 419 * we check for that and delete the context there. 420 */ 421 gc->xid = None; 422 } else { 423 gc->vtable->destroy(gc); 424 } 425 __glXUnlock(); 426} 427 428/* 429** Return the major and minor version #s for the GLX extension 430*/ 431_X_EXPORT Bool 432glXQueryVersion(Display * dpy, int *major, int *minor) 433{ 434 struct glx_display *priv; 435 436 /* Init the extension. This fetches the major and minor version. */ 437 priv = __glXInitialize(dpy); 438 if (!priv) 439 return GL_FALSE; 440 441 if (major) 442 *major = priv->majorVersion; 443 if (minor) 444 *minor = priv->minorVersion; 445 return GL_TRUE; 446} 447 448/* 449** Query the existance of the GLX extension 450*/ 451_X_EXPORT Bool 452glXQueryExtension(Display * dpy, int *errorBase, int *eventBase) 453{ 454 int major_op, erb, evb; 455 Bool rv; 456 457 rv = XQueryExtension(dpy, GLX_EXTENSION_NAME, &major_op, &evb, &erb); 458 if (rv) { 459 if (errorBase) 460 *errorBase = erb; 461 if (eventBase) 462 *eventBase = evb; 463 } 464 return rv; 465} 466 467/* 468** Put a barrier in the token stream that forces the GL to finish its 469** work before X can proceed. 470*/ 471_X_EXPORT void 472glXWaitGL(void) 473{ 474 struct glx_context *gc = __glXGetCurrentContext(); 475 476 if (gc && gc->vtable->wait_gl) 477 gc->vtable->wait_gl(gc); 478} 479 480/* 481** Put a barrier in the token stream that forces X to finish its 482** work before GL can proceed. 483*/ 484_X_EXPORT void 485glXWaitX(void) 486{ 487 struct glx_context *gc = __glXGetCurrentContext(); 488 489 if (gc && gc->vtable->wait_x) 490 gc->vtable->wait_x(gc); 491} 492 493_X_EXPORT void 494glXUseXFont(Font font, int first, int count, int listBase) 495{ 496 struct glx_context *gc = __glXGetCurrentContext(); 497 498 if (gc && gc->vtable->use_x_font) 499 gc->vtable->use_x_font(gc, font, first, count, listBase); 500} 501 502/************************************************************************/ 503 504/* 505** Copy the source context to the destination context using the 506** attribute "mask". 507*/ 508_X_EXPORT void 509glXCopyContext(Display * dpy, GLXContext source_user, 510 GLXContext dest_user, unsigned long mask) 511{ 512 struct glx_context *source = (struct glx_context *) source_user; 513 struct glx_context *dest = (struct glx_context *) dest_user; 514#ifdef GLX_USE_APPLEGL 515 struct glx_context *gc = __glXGetCurrentContext(); 516 int errorcode; 517 bool x11error; 518 519 if(apple_glx_copy_context(gc->driContext, source->driContext, dest->driContext, 520 mask, &errorcode, &x11error)) { 521 __glXSendError(dpy, errorcode, 0, X_GLXCopyContext, x11error); 522 } 523 524#else 525 xGLXCopyContextReq *req; 526 struct glx_context *gc = __glXGetCurrentContext(); 527 GLXContextTag tag; 528 CARD8 opcode; 529 530 opcode = __glXSetupForCommand(dpy); 531 if (!opcode) { 532 return; 533 } 534 535#if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL) 536 if (gc->isDirect) { 537 /* NOT_DONE: This does not work yet */ 538 } 539#endif 540 541 /* 542 ** If the source is the current context, send its tag so that the context 543 ** can be flushed before the copy. 544 */ 545 if (source == gc && dpy == gc->currentDpy) { 546 tag = gc->currentContextTag; 547 } 548 else { 549 tag = 0; 550 } 551 552 /* Send the glXCopyContext request */ 553 LockDisplay(dpy); 554 GetReq(GLXCopyContext, req); 555 req->reqType = opcode; 556 req->glxCode = X_GLXCopyContext; 557 req->source = source ? source->xid : None; 558 req->dest = dest ? dest->xid : None; 559 req->mask = mask; 560 req->contextTag = tag; 561 UnlockDisplay(dpy); 562 SyncHandle(); 563#endif /* GLX_USE_APPLEGL */ 564} 565 566 567/** 568 * Determine if a context uses direct rendering. 569 * 570 * \param dpy Display where the context was created. 571 * \param contextID ID of the context to be tested. 572 * 573 * \returns \c GL_TRUE if the context is direct rendering or not. 574 */ 575static Bool 576__glXIsDirect(Display * dpy, GLXContextID contextID) 577{ 578#if !defined(USE_XCB) 579 xGLXIsDirectReq *req; 580 xGLXIsDirectReply reply; 581#endif 582 CARD8 opcode; 583 584 opcode = __glXSetupForCommand(dpy); 585 if (!opcode) { 586 return GL_FALSE; 587 } 588 589#ifdef USE_XCB 590 xcb_connection_t *c = XGetXCBConnection(dpy); 591 xcb_glx_is_direct_reply_t *reply = xcb_glx_is_direct_reply(c, 592 xcb_glx_is_direct 593 (c, contextID), 594 NULL); 595 596 const Bool is_direct = (reply != NULL && reply->is_direct) ? True : False; 597 free(reply); 598 599 return is_direct; 600#else 601 /* Send the glXIsDirect request */ 602 LockDisplay(dpy); 603 GetReq(GLXIsDirect, req); 604 req->reqType = opcode; 605 req->glxCode = X_GLXIsDirect; 606 req->context = contextID; 607 _XReply(dpy, (xReply *) & reply, 0, False); 608 UnlockDisplay(dpy); 609 SyncHandle(); 610 611 return reply.isDirect; 612#endif /* USE_XCB */ 613} 614 615/** 616 * \todo 617 * Shouldn't this function \b always return \c GL_FALSE when 618 * \c GLX_DIRECT_RENDERING is not defined? Do we really need to bother with 619 * the GLX protocol here at all? 620 */ 621_X_EXPORT Bool 622glXIsDirect(Display * dpy, GLXContext gc_user) 623{ 624 struct glx_context *gc = (struct glx_context *) gc_user; 625 626 if (!gc) { 627 return GL_FALSE; 628 } 629 else if (gc->isDirect) { 630 return GL_TRUE; 631 } 632#ifdef GLX_USE_APPLEGL /* TODO: indirect on darwin */ 633 return GL_FALSE; 634#else 635 return __glXIsDirect(dpy, gc->xid); 636#endif 637} 638 639_X_EXPORT GLXPixmap 640glXCreateGLXPixmap(Display * dpy, XVisualInfo * vis, Pixmap pixmap) 641{ 642#ifdef GLX_USE_APPLEGL 643 int screen = vis->screen; 644 struct glx_screen *const psc = GetGLXScreenConfigs(dpy, screen); 645 const struct glx_config *config; 646 647 config = glx_config_find_visual(psc->visuals, vis->visualid); 648 649 if(apple_glx_pixmap_create(dpy, vis->screen, pixmap, config)) 650 return None; 651 652 return pixmap; 653#else 654 xGLXCreateGLXPixmapReq *req; 655 struct glx_drawable *glxDraw; 656 GLXPixmap xid; 657 CARD8 opcode; 658 659 opcode = __glXSetupForCommand(dpy); 660 if (!opcode) { 661 return None; 662 } 663 664 glxDraw = Xmalloc(sizeof(*glxDraw)); 665 if (!glxDraw) 666 return None; 667 668 /* Send the glXCreateGLXPixmap request */ 669 LockDisplay(dpy); 670 GetReq(GLXCreateGLXPixmap, req); 671 req->reqType = opcode; 672 req->glxCode = X_GLXCreateGLXPixmap; 673 req->screen = vis->screen; 674 req->visual = vis->visualid; 675 req->pixmap = pixmap; 676 req->glxpixmap = xid = XAllocID(dpy); 677 UnlockDisplay(dpy); 678 SyncHandle(); 679 680 if (InitGLXDrawable(dpy, glxDraw, pixmap, req->glxpixmap)) { 681 free(glxDraw); 682 return None; 683 } 684 685#if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL) 686 do { 687 /* FIXME: Maybe delay __DRIdrawable creation until the drawable 688 * is actually bound to a context... */ 689 690 struct glx_display *const priv = __glXInitialize(dpy); 691 __GLXDRIdrawable *pdraw; 692 struct glx_screen *psc; 693 struct glx_config *config; 694 695 psc = priv->screens[vis->screen]; 696 if (psc->driScreen == NULL) 697 return xid; 698 699 config = glx_config_find_visual(psc->visuals, vis->visualid); 700 pdraw = psc->driScreen->createDrawable(psc, pixmap, xid, config); 701 if (pdraw == NULL) { 702 fprintf(stderr, "failed to create pixmap\n"); 703 xid = None; 704 break; 705 } 706 707 if (__glxHashInsert(priv->drawHash, xid, pdraw)) { 708 (*pdraw->destroyDrawable) (pdraw); 709 xid = None; 710 break; 711 } 712 } while (0); 713 714 if (xid == None) { 715 xGLXDestroyGLXPixmapReq *dreq; 716 LockDisplay(dpy); 717 GetReq(GLXDestroyGLXPixmap, dreq); 718 dreq->reqType = opcode; 719 dreq->glxCode = X_GLXDestroyGLXPixmap; 720 dreq->glxpixmap = xid; 721 UnlockDisplay(dpy); 722 SyncHandle(); 723 } 724#endif 725 726 return xid; 727#endif 728} 729 730/* 731** Destroy the named pixmap 732*/ 733_X_EXPORT void 734glXDestroyGLXPixmap(Display * dpy, GLXPixmap glxpixmap) 735{ 736#ifdef GLX_USE_APPLEGL 737 if(apple_glx_pixmap_destroy(dpy, glxpixmap)) 738 __glXSendError(dpy, GLXBadPixmap, glxpixmap, X_GLXDestroyPixmap, false); 739#else 740 xGLXDestroyGLXPixmapReq *req; 741 CARD8 opcode; 742 743 opcode = __glXSetupForCommand(dpy); 744 if (!opcode) { 745 return; 746 } 747 748 /* Send the glXDestroyGLXPixmap request */ 749 LockDisplay(dpy); 750 GetReq(GLXDestroyGLXPixmap, req); 751 req->reqType = opcode; 752 req->glxCode = X_GLXDestroyGLXPixmap; 753 req->glxpixmap = glxpixmap; 754 UnlockDisplay(dpy); 755 SyncHandle(); 756 757 DestroyGLXDrawable(dpy, glxpixmap); 758 759#if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL) 760 { 761 struct glx_display *const priv = __glXInitialize(dpy); 762 __GLXDRIdrawable *pdraw = GetGLXDRIDrawable(dpy, glxpixmap); 763 764 if (pdraw != NULL) { 765 (*pdraw->destroyDrawable) (pdraw); 766 __glxHashDelete(priv->drawHash, glxpixmap); 767 } 768 } 769#endif 770#endif /* GLX_USE_APPLEGL */ 771} 772 773_X_EXPORT void 774glXSwapBuffers(Display * dpy, GLXDrawable drawable) 775{ 776#ifdef GLX_USE_APPLEGL 777 struct glx_context * gc = __glXGetCurrentContext(); 778 if(gc && apple_glx_is_current_drawable(dpy, gc->driContext, drawable)) { 779 apple_glx_swap_buffers(gc->driContext); 780 } else { 781 __glXSendError(dpy, GLXBadCurrentWindow, 0, X_GLXSwapBuffers, false); 782 } 783#else 784 struct glx_context *gc; 785 GLXContextTag tag; 786 CARD8 opcode; 787#ifdef USE_XCB 788 xcb_connection_t *c; 789#else 790 xGLXSwapBuffersReq *req; 791#endif 792 793 gc = __glXGetCurrentContext(); 794 795#if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL) 796 { 797 __GLXDRIdrawable *pdraw = GetGLXDRIDrawable(dpy, drawable); 798 799 if (pdraw != NULL) { 800 if (gc && drawable == gc->currentDrawable) { 801 glFlush(); 802 } 803 804 (*pdraw->psc->driScreen->swapBuffers)(pdraw, 0, 0, 0); 805 return; 806 } 807 } 808#endif 809 810 opcode = __glXSetupForCommand(dpy); 811 if (!opcode) { 812 return; 813 } 814 815 /* 816 ** The calling thread may or may not have a current context. If it 817 ** does, send the context tag so the server can do a flush. 818 */ 819 if ((gc != NULL) && (dpy == gc->currentDpy) && 820 ((drawable == gc->currentDrawable) 821 || (drawable == gc->currentReadable))) { 822 tag = gc->currentContextTag; 823 } 824 else { 825 tag = 0; 826 } 827 828#ifdef USE_XCB 829 c = XGetXCBConnection(dpy); 830 xcb_glx_swap_buffers(c, tag, drawable); 831 xcb_flush(c); 832#else 833 /* Send the glXSwapBuffers request */ 834 LockDisplay(dpy); 835 GetReq(GLXSwapBuffers, req); 836 req->reqType = opcode; 837 req->glxCode = X_GLXSwapBuffers; 838 req->drawable = drawable; 839 req->contextTag = tag; 840 UnlockDisplay(dpy); 841 SyncHandle(); 842 XFlush(dpy); 843#endif /* USE_XCB */ 844#endif /* GLX_USE_APPLEGL */ 845} 846 847 848/* 849** Return configuration information for the given display, screen and 850** visual combination. 851*/ 852_X_EXPORT int 853glXGetConfig(Display * dpy, XVisualInfo * vis, int attribute, 854 int *value_return) 855{ 856 struct glx_display *priv; 857 struct glx_screen *psc; 858 struct glx_config *config; 859 int status; 860 861 status = GetGLXPrivScreenConfig(dpy, vis->screen, &priv, &psc); 862 if (status == Success) { 863 config = glx_config_find_visual(psc->visuals, vis->visualid); 864 865 /* Lookup attribute after first finding a match on the visual */ 866 if (config != NULL) { 867 return glx_config_get(config, attribute, value_return); 868 } 869 870 status = GLX_BAD_VISUAL; 871 } 872 873 /* 874 ** If we can't find the config for this visual, this visual is not 875 ** supported by the OpenGL implementation on the server. 876 */ 877 if ((status == GLX_BAD_VISUAL) && (attribute == GLX_USE_GL)) { 878 *value_return = GL_FALSE; 879 status = Success; 880 } 881 882 return status; 883} 884 885/************************************************************************/ 886 887static void 888init_fbconfig_for_chooser(struct glx_config * config, 889 GLboolean fbconfig_style_tags) 890{ 891 memset(config, 0, sizeof(struct glx_config)); 892 config->visualID = (XID) GLX_DONT_CARE; 893 config->visualType = GLX_DONT_CARE; 894 895 /* glXChooseFBConfig specifies different defaults for these two than 896 * glXChooseVisual. 897 */ 898 if (fbconfig_style_tags) { 899 config->rgbMode = GL_TRUE; 900 config->doubleBufferMode = GLX_DONT_CARE; 901 } 902 903 config->visualRating = GLX_DONT_CARE; 904 config->transparentPixel = GLX_NONE; 905 config->transparentRed = GLX_DONT_CARE; 906 config->transparentGreen = GLX_DONT_CARE; 907 config->transparentBlue = GLX_DONT_CARE; 908 config->transparentAlpha = GLX_DONT_CARE; 909 config->transparentIndex = GLX_DONT_CARE; 910 911 config->drawableType = GLX_WINDOW_BIT; 912 config->renderType = 913 (config->rgbMode) ? GLX_RGBA_BIT : GLX_COLOR_INDEX_BIT; 914 config->xRenderable = GLX_DONT_CARE; 915 config->fbconfigID = (GLXFBConfigID) (GLX_DONT_CARE); 916 917 config->swapMethod = GLX_DONT_CARE; 918} 919 920#define MATCH_DONT_CARE( param ) \ 921 do { \ 922 if ( ((int) a-> param != (int) GLX_DONT_CARE) \ 923 && (a-> param != b-> param) ) { \ 924 return False; \ 925 } \ 926 } while ( 0 ) 927 928#define MATCH_MINIMUM( param ) \ 929 do { \ 930 if ( ((int) a-> param != (int) GLX_DONT_CARE) \ 931 && (a-> param > b-> param) ) { \ 932 return False; \ 933 } \ 934 } while ( 0 ) 935 936#define MATCH_EXACT( param ) \ 937 do { \ 938 if ( a-> param != b-> param) { \ 939 return False; \ 940 } \ 941 } while ( 0 ) 942 943/* Test that all bits from a are contained in b */ 944#define MATCH_MASK(param) \ 945 do { \ 946 if ((a->param & ~b->param) != 0) \ 947 return False; \ 948 } while (0); 949 950/** 951 * Determine if two GLXFBConfigs are compatible. 952 * 953 * \param a Application specified config to test. 954 * \param b Server specified config to test against \c a. 955 */ 956static Bool 957fbconfigs_compatible(const struct glx_config * const a, 958 const struct glx_config * const b) 959{ 960 MATCH_DONT_CARE(doubleBufferMode); 961 MATCH_DONT_CARE(visualType); 962 MATCH_DONT_CARE(visualRating); 963 MATCH_DONT_CARE(xRenderable); 964 MATCH_DONT_CARE(fbconfigID); 965 MATCH_DONT_CARE(swapMethod); 966 967 MATCH_MINIMUM(rgbBits); 968 MATCH_MINIMUM(numAuxBuffers); 969 MATCH_MINIMUM(redBits); 970 MATCH_MINIMUM(greenBits); 971 MATCH_MINIMUM(blueBits); 972 MATCH_MINIMUM(alphaBits); 973 MATCH_MINIMUM(depthBits); 974 MATCH_MINIMUM(stencilBits); 975 MATCH_MINIMUM(accumRedBits); 976 MATCH_MINIMUM(accumGreenBits); 977 MATCH_MINIMUM(accumBlueBits); 978 MATCH_MINIMUM(accumAlphaBits); 979 MATCH_MINIMUM(sampleBuffers); 980 MATCH_MINIMUM(maxPbufferWidth); 981 MATCH_MINIMUM(maxPbufferHeight); 982 MATCH_MINIMUM(maxPbufferPixels); 983 MATCH_MINIMUM(samples); 984 985 MATCH_DONT_CARE(stereoMode); 986 MATCH_EXACT(level); 987 988 MATCH_MASK(drawableType); 989 MATCH_MASK(renderType); 990 991 /* There is a bug in a few of the XFree86 DDX drivers. They contain 992 * visuals with a "transparent type" of 0 when they really mean GLX_NONE. 993 * Technically speaking, it is a bug in the DDX driver, but there is 994 * enough of an installed base to work around the problem here. In any 995 * case, 0 is not a valid value of the transparent type, so we'll treat 0 996 * from the app as GLX_DONT_CARE. We'll consider GLX_NONE from the app and 997 * 0 from the server to be a match to maintain backward compatibility with 998 * the (broken) drivers. 999 */ 1000 1001 if (a->transparentPixel != (int) GLX_DONT_CARE && a->transparentPixel != 0) { 1002 if (a->transparentPixel == GLX_NONE) { 1003 if (b->transparentPixel != GLX_NONE && b->transparentPixel != 0) 1004 return False; 1005 } 1006 else { 1007 MATCH_EXACT(transparentPixel); 1008 } 1009 1010 switch (a->transparentPixel) { 1011 case GLX_TRANSPARENT_RGB: 1012 MATCH_DONT_CARE(transparentRed); 1013 MATCH_DONT_CARE(transparentGreen); 1014 MATCH_DONT_CARE(transparentBlue); 1015 MATCH_DONT_CARE(transparentAlpha); 1016 break; 1017 1018 case GLX_TRANSPARENT_INDEX: 1019 MATCH_DONT_CARE(transparentIndex); 1020 break; 1021 1022 default: 1023 break; 1024 } 1025 } 1026 1027 return True; 1028} 1029 1030 1031/* There's some trickly language in the GLX spec about how this is supposed 1032 * to work. Basically, if a given component size is either not specified 1033 * or the requested size is zero, it is supposed to act like PERFER_SMALLER. 1034 * Well, that's really hard to do with the code as-is. This behavior is 1035 * closer to correct, but still not technically right. 1036 */ 1037#define PREFER_LARGER_OR_ZERO(comp) \ 1038 do { \ 1039 if ( ((*a)-> comp) != ((*b)-> comp) ) { \ 1040 if ( ((*a)-> comp) == 0 ) { \ 1041 return -1; \ 1042 } \ 1043 else if ( ((*b)-> comp) == 0 ) { \ 1044 return 1; \ 1045 } \ 1046 else { \ 1047 return ((*b)-> comp) - ((*a)-> comp) ; \ 1048 } \ 1049 } \ 1050 } while( 0 ) 1051 1052#define PREFER_LARGER(comp) \ 1053 do { \ 1054 if ( ((*a)-> comp) != ((*b)-> comp) ) { \ 1055 return ((*b)-> comp) - ((*a)-> comp) ; \ 1056 } \ 1057 } while( 0 ) 1058 1059#define PREFER_SMALLER(comp) \ 1060 do { \ 1061 if ( ((*a)-> comp) != ((*b)-> comp) ) { \ 1062 return ((*a)-> comp) - ((*b)-> comp) ; \ 1063 } \ 1064 } while( 0 ) 1065 1066/** 1067 * Compare two GLXFBConfigs. This function is intended to be used as the 1068 * compare function passed in to qsort. 1069 * 1070 * \returns If \c a is a "better" config, according to the specification of 1071 * SGIX_fbconfig, a number less than zero is returned. If \c b is 1072 * better, then a number greater than zero is return. If both are 1073 * equal, zero is returned. 1074 * \sa qsort, glXChooseVisual, glXChooseFBConfig, glXChooseFBConfigSGIX 1075 */ 1076static int 1077fbconfig_compare(struct glx_config **a, struct glx_config **b) 1078{ 1079 /* The order of these comparisons must NOT change. It is defined by 1080 * the GLX 1.3 spec and ARB_multisample. 1081 */ 1082 1083 PREFER_SMALLER(visualSelectGroup); 1084 1085 /* The sort order for the visualRating is GLX_NONE, GLX_SLOW, and 1086 * GLX_NON_CONFORMANT_CONFIG. It just so happens that this is the 1087 * numerical sort order of the enums (0x8000, 0x8001, and 0x800D). 1088 */ 1089 PREFER_SMALLER(visualRating); 1090 1091 /* This isn't quite right. It is supposed to compare the sum of the 1092 * components the user specifically set minimums for. 1093 */ 1094 PREFER_LARGER_OR_ZERO(redBits); 1095 PREFER_LARGER_OR_ZERO(greenBits); 1096 PREFER_LARGER_OR_ZERO(blueBits); 1097 PREFER_LARGER_OR_ZERO(alphaBits); 1098 1099 PREFER_SMALLER(rgbBits); 1100 1101 if (((*a)->doubleBufferMode != (*b)->doubleBufferMode)) { 1102 /* Prefer single-buffer. 1103 */ 1104 return (!(*a)->doubleBufferMode) ? -1 : 1; 1105 } 1106 1107 PREFER_SMALLER(numAuxBuffers); 1108 1109 PREFER_LARGER_OR_ZERO(depthBits); 1110 PREFER_SMALLER(stencilBits); 1111 1112 /* This isn't quite right. It is supposed to compare the sum of the 1113 * components the user specifically set minimums for. 1114 */ 1115 PREFER_LARGER_OR_ZERO(accumRedBits); 1116 PREFER_LARGER_OR_ZERO(accumGreenBits); 1117 PREFER_LARGER_OR_ZERO(accumBlueBits); 1118 PREFER_LARGER_OR_ZERO(accumAlphaBits); 1119 1120 PREFER_SMALLER(visualType); 1121 1122 /* None of the multisample specs say where this comparison should happen, 1123 * so I put it near the end. 1124 */ 1125 PREFER_SMALLER(sampleBuffers); 1126 PREFER_SMALLER(samples); 1127 1128 /* None of the pbuffer or fbconfig specs say that this comparison needs 1129 * to happen at all, but it seems like it should. 1130 */ 1131 PREFER_LARGER(maxPbufferWidth); 1132 PREFER_LARGER(maxPbufferHeight); 1133 PREFER_LARGER(maxPbufferPixels); 1134 1135 return 0; 1136} 1137 1138 1139/** 1140 * Selects and sorts a subset of the supplied configs based on the attributes. 1141 * This function forms to basis of \c glXChooseVisual, \c glXChooseFBConfig, 1142 * and \c glXChooseFBConfigSGIX. 1143 * 1144 * \param configs Array of pointers to possible configs. The elements of 1145 * this array that do not meet the criteria will be set to 1146 * NULL. The remaining elements will be sorted according to 1147 * the various visual / FBConfig selection rules. 1148 * \param num_configs Number of elements in the \c configs array. 1149 * \param attribList Attributes used select from \c configs. This array is 1150 * terminated by a \c None tag. The array can either take 1151 * the form expected by \c glXChooseVisual (where boolean 1152 * tags do not have a value) or by \c glXChooseFBConfig 1153 * (where every tag has a value). 1154 * \param fbconfig_style_tags Selects whether \c attribList is in 1155 * \c glXChooseVisual style or 1156 * \c glXChooseFBConfig style. 1157 * \returns The number of valid elements left in \c configs. 1158 * 1159 * \sa glXChooseVisual, glXChooseFBConfig, glXChooseFBConfigSGIX 1160 */ 1161static int 1162choose_visual(struct glx_config ** configs, int num_configs, 1163 const int *attribList, GLboolean fbconfig_style_tags) 1164{ 1165 struct glx_config test_config; 1166 int base; 1167 int i; 1168 1169 /* This is a fairly direct implementation of the selection method 1170 * described by GLX_SGIX_fbconfig. Start by culling out all the 1171 * configs that are not compatible with the selected parameter 1172 * list. 1173 */ 1174 1175 init_fbconfig_for_chooser(&test_config, fbconfig_style_tags); 1176 __glXInitializeVisualConfigFromTags(&test_config, 512, 1177 (const INT32 *) attribList, 1178 GL_TRUE, fbconfig_style_tags); 1179 1180 base = 0; 1181 for (i = 0; i < num_configs; i++) { 1182 if (fbconfigs_compatible(&test_config, configs[i])) { 1183 configs[base] = configs[i]; 1184 base++; 1185 } 1186 } 1187 1188 if (base == 0) { 1189 return 0; 1190 } 1191 1192 if (base < num_configs) { 1193 (void) memset(&configs[base], 0, sizeof(void *) * (num_configs - base)); 1194 } 1195 1196 /* After the incompatible configs are removed, the resulting 1197 * list is sorted according to the rules set out in the various 1198 * specifications. 1199 */ 1200 1201 qsort(configs, base, sizeof(struct glx_config *), 1202 (int (*)(const void *, const void *)) fbconfig_compare); 1203 return base; 1204} 1205 1206 1207 1208 1209/* 1210** Return the visual that best matches the template. Return None if no 1211** visual matches the template. 1212*/ 1213_X_EXPORT XVisualInfo * 1214glXChooseVisual(Display * dpy, int screen, int *attribList) 1215{ 1216 XVisualInfo *visualList = NULL; 1217 struct glx_display *priv; 1218 struct glx_screen *psc; 1219 struct glx_config test_config; 1220 struct glx_config *config; 1221 struct glx_config *best_config = NULL; 1222 1223 /* 1224 ** Get a list of all visuals, return if list is empty 1225 */ 1226 if (GetGLXPrivScreenConfig(dpy, screen, &priv, &psc) != Success) { 1227 return None; 1228 } 1229 1230 1231 /* 1232 ** Build a template from the defaults and the attribute list 1233 ** Free visual list and return if an unexpected token is encountered 1234 */ 1235 init_fbconfig_for_chooser(&test_config, GL_FALSE); 1236 __glXInitializeVisualConfigFromTags(&test_config, 512, 1237 (const INT32 *) attribList, 1238 GL_TRUE, GL_FALSE); 1239 1240 /* 1241 ** Eliminate visuals that don't meet minimum requirements 1242 ** Compute a score for those that do 1243 ** Remember which visual, if any, got the highest score 1244 ** If no visual is acceptable, return None 1245 ** Otherwise, create an XVisualInfo list with just the selected X visual 1246 ** and return this. 1247 */ 1248 for (config = psc->visuals; config != NULL; config = config->next) { 1249 if (fbconfigs_compatible(&test_config, config) 1250 && ((best_config == NULL) || 1251 (fbconfig_compare (&config, &best_config) < 0))) { 1252 XVisualInfo visualTemplate; 1253 XVisualInfo *newList; 1254 int i; 1255 1256 visualTemplate.screen = screen; 1257 visualTemplate.visualid = config->visualID; 1258 newList = XGetVisualInfo(dpy, VisualScreenMask | VisualIDMask, 1259 &visualTemplate, &i); 1260 1261 if (newList) { 1262 Xfree(visualList); 1263 visualList = newList; 1264 best_config = config; 1265 } 1266 } 1267 } 1268 1269#ifdef GLX_USE_APPLEGL 1270 if(visualList && getenv("LIBGL_DUMP_VISUALID")) { 1271 printf("visualid 0x%lx\n", visualList[0].visualid); 1272 } 1273#endif 1274 1275 return visualList; 1276} 1277 1278 1279_X_EXPORT const char * 1280glXQueryExtensionsString(Display * dpy, int screen) 1281{ 1282 struct glx_screen *psc; 1283 struct glx_display *priv; 1284 1285 if (GetGLXPrivScreenConfig(dpy, screen, &priv, &psc) != Success) { 1286 return NULL; 1287 } 1288 1289 if (!psc->effectiveGLXexts) { 1290 if (!psc->serverGLXexts) { 1291 psc->serverGLXexts = 1292 __glXQueryServerString(dpy, priv->majorOpcode, screen, 1293 GLX_EXTENSIONS); 1294 } 1295 1296 __glXCalculateUsableExtensions(psc, 1297#if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL) 1298 (psc->driScreen != NULL), 1299#else 1300 GL_FALSE, 1301#endif 1302 priv->minorVersion); 1303 } 1304 1305 return psc->effectiveGLXexts; 1306} 1307 1308_X_EXPORT const char * 1309glXGetClientString(Display * dpy, int name) 1310{ 1311 (void) dpy; 1312 1313 switch (name) { 1314 case GLX_VENDOR: 1315 return (__glXGLXClientVendorName); 1316 case GLX_VERSION: 1317 return (__glXGLXClientVersion); 1318 case GLX_EXTENSIONS: 1319 return (__glXGetClientExtensions()); 1320 default: 1321 return NULL; 1322 } 1323} 1324 1325_X_EXPORT const char * 1326glXQueryServerString(Display * dpy, int screen, int name) 1327{ 1328 struct glx_screen *psc; 1329 struct glx_display *priv; 1330 const char **str; 1331 1332 1333 if (GetGLXPrivScreenConfig(dpy, screen, &priv, &psc) != Success) { 1334 return NULL; 1335 } 1336 1337 switch (name) { 1338 case GLX_VENDOR: 1339 str = &priv->serverGLXvendor; 1340 break; 1341 case GLX_VERSION: 1342 str = &priv->serverGLXversion; 1343 break; 1344 case GLX_EXTENSIONS: 1345 str = &psc->serverGLXexts; 1346 break; 1347 default: 1348 return NULL; 1349 } 1350 1351 if (*str == NULL) { 1352 *str = __glXQueryServerString(dpy, priv->majorOpcode, screen, name); 1353 } 1354 1355 return *str; 1356} 1357 1358void 1359__glXClientInfo(Display * dpy, int opcode) 1360{ 1361 char *ext_str = __glXGetClientGLExtensionString(); 1362 int size = strlen(ext_str) + 1; 1363 1364#ifdef USE_XCB 1365 xcb_connection_t *c = XGetXCBConnection(dpy); 1366 xcb_glx_client_info(c, 1367 GLX_MAJOR_VERSION, GLX_MINOR_VERSION, size, ext_str); 1368#else 1369 xGLXClientInfoReq *req; 1370 1371 /* Send the glXClientInfo request */ 1372 LockDisplay(dpy); 1373 GetReq(GLXClientInfo, req); 1374 req->reqType = opcode; 1375 req->glxCode = X_GLXClientInfo; 1376 req->major = GLX_MAJOR_VERSION; 1377 req->minor = GLX_MINOR_VERSION; 1378 1379 req->length += (size + 3) >> 2; 1380 req->numbytes = size; 1381 Data(dpy, ext_str, size); 1382 1383 UnlockDisplay(dpy); 1384 SyncHandle(); 1385#endif /* USE_XCB */ 1386 1387 Xfree(ext_str); 1388} 1389 1390 1391/* 1392** EXT_import_context 1393*/ 1394 1395_X_EXPORT Display * 1396glXGetCurrentDisplay(void) 1397{ 1398 struct glx_context *gc = __glXGetCurrentContext(); 1399 if (NULL == gc) 1400 return NULL; 1401 return gc->currentDpy; 1402} 1403 1404_X_EXPORT 1405GLX_ALIAS(Display *, glXGetCurrentDisplayEXT, (void), (), 1406 glXGetCurrentDisplay) 1407 1408#ifndef GLX_USE_APPLEGL 1409_X_EXPORT GLXContext 1410glXImportContextEXT(Display *dpy, GLXContextID contextID) 1411{ 1412 struct glx_display *priv = __glXInitialize(dpy); 1413 struct glx_screen *psc = NULL; 1414 xGLXQueryContextReply reply; 1415 CARD8 opcode; 1416 struct glx_context *ctx; 1417 1418 /* This GLX implementation knows about 5 different properties, so 1419 * allow the server to send us one of each. 1420 */ 1421 int propList[5 * 2], *pProp, nPropListBytes; 1422 int numProps; 1423 int i, renderType; 1424 XID share; 1425 struct glx_config *mode; 1426 uint32_t fbconfigID = 0; 1427 uint32_t visualID = 0; 1428 uint32_t screen; 1429 Bool got_screen = False; 1430 1431 if (contextID == None || __glXIsDirect(dpy, contextID)) 1432 return NULL; 1433 1434 opcode = __glXSetupForCommand(dpy); 1435 if (!opcode) 1436 return 0; 1437 1438 /* Send the glXQueryContextInfoEXT request */ 1439 LockDisplay(dpy); 1440 1441 if (priv->majorVersion > 1 || priv->minorVersion >= 3) { 1442 xGLXQueryContextReq *req; 1443 1444 GetReq(GLXQueryContext, req); 1445 1446 req->reqType = opcode; 1447 req->glxCode = X_GLXQueryContext; 1448 req->context = contextID; 1449 } 1450 else { 1451 xGLXVendorPrivateReq *vpreq; 1452 xGLXQueryContextInfoEXTReq *req; 1453 1454 GetReqExtra(GLXVendorPrivate, 1455 sz_xGLXQueryContextInfoEXTReq - sz_xGLXVendorPrivateReq, 1456 vpreq); 1457 req = (xGLXQueryContextInfoEXTReq *) vpreq; 1458 req->reqType = opcode; 1459 req->glxCode = X_GLXVendorPrivateWithReply; 1460 req->vendorCode = X_GLXvop_QueryContextInfoEXT; 1461 req->context = contextID; 1462 } 1463 1464 _XReply(dpy, (xReply *) & reply, 0, False); 1465 1466 if (reply.n <= __GLX_MAX_CONTEXT_PROPS) 1467 nPropListBytes = reply.n * 2 * sizeof propList[0]; 1468 else 1469 nPropListBytes = 0; 1470 _XRead(dpy, (char *) propList, nPropListBytes); 1471 UnlockDisplay(dpy); 1472 SyncHandle(); 1473 1474 numProps = nPropListBytes / (2 * sizeof(propList[0])); 1475 share = None; 1476 mode = NULL; 1477 renderType = 0; 1478 pProp = propList; 1479 1480 for (i = 0, pProp = propList; i < numProps; i++, pProp += 2) 1481 switch (pProp[0]) { 1482 case GLX_SCREEN: 1483 screen = pProp[1]; 1484 got_screen = True; 1485 break; 1486 case GLX_SHARE_CONTEXT_EXT: 1487 share = pProp[1]; 1488 break; 1489 case GLX_VISUAL_ID_EXT: 1490 visualID = pProp[1]; 1491 break; 1492 case GLX_FBCONFIG_ID: 1493 fbconfigID = pProp[1]; 1494 break; 1495 case GLX_RENDER_TYPE: 1496 renderType = pProp[1]; 1497 break; 1498 } 1499 1500 if (!got_screen) 1501 return NULL; 1502 1503 psc = GetGLXScreenConfigs(dpy, screen); 1504 if (psc == NULL) 1505 return NULL; 1506 1507 if (fbconfigID != 0) { 1508 mode = glx_config_find_fbconfig(psc->configs, fbconfigID); 1509 } else if (visualID != 0) { 1510 mode = glx_config_find_visual(psc->visuals, visualID); 1511 } 1512 1513 if (mode == NULL) 1514 return NULL; 1515 1516 ctx = indirect_create_context(psc, mode, NULL, renderType); 1517 if (ctx == NULL) 1518 return NULL; 1519 1520 ctx->xid = contextID; 1521 ctx->imported = GL_TRUE; 1522 ctx->share_xid = share; 1523 1524 return (GLXContext) ctx; 1525} 1526 1527#endif 1528 1529_X_EXPORT int 1530glXQueryContext(Display * dpy, GLXContext ctx_user, int attribute, int *value) 1531{ 1532 struct glx_context *ctx = (struct glx_context *) ctx_user; 1533 1534 switch (attribute) { 1535 case GLX_SHARE_CONTEXT_EXT: 1536 *value = ctx->share_xid; 1537 break; 1538 case GLX_VISUAL_ID_EXT: 1539 *value = ctx->config ? ctx->config->visualID : None; 1540 break; 1541 case GLX_SCREEN: 1542 *value = ctx->screen; 1543 break; 1544 case GLX_FBCONFIG_ID: 1545 *value = ctx->config ? ctx->config->fbconfigID : None; 1546 break; 1547 case GLX_RENDER_TYPE: 1548 *value = ctx->renderType; 1549 break; 1550 default: 1551 return GLX_BAD_ATTRIBUTE; 1552 } 1553 return Success; 1554} 1555 1556_X_EXPORT 1557GLX_ALIAS(int, glXQueryContextInfoEXT, 1558 (Display * dpy, GLXContext ctx, int attribute, int *value), 1559 (dpy, ctx, attribute, value), glXQueryContext) 1560 1561_X_EXPORT GLXContextID glXGetContextIDEXT(const GLXContext ctx_user) 1562{ 1563 struct glx_context *ctx = (struct glx_context *) ctx_user; 1564 1565 return (ctx == NULL) ? None : ctx->xid; 1566} 1567 1568_X_EXPORT void 1569glXFreeContextEXT(Display *dpy, GLXContext ctx) 1570{ 1571 struct glx_context *gc = (struct glx_context *) ctx; 1572 1573 if (gc == NULL || gc->xid == None) 1574 return; 1575 1576 /* The GLX_EXT_import_context spec says: 1577 * 1578 * "glXFreeContext does not free the server-side context information or 1579 * the XID associated with the server-side context." 1580 * 1581 * Don't send any protocol. Just destroy the client-side tracking of the 1582 * context. Also, only release the context structure if it's not current. 1583 */ 1584 __glXLock(); 1585 if (gc->currentDpy) { 1586 gc->xid = None; 1587 } else { 1588 gc->vtable->destroy(gc); 1589 } 1590 __glXUnlock(); 1591} 1592 1593_X_EXPORT GLXFBConfig * 1594glXChooseFBConfig(Display * dpy, int screen, 1595 const int *attribList, int *nitems) 1596{ 1597 struct glx_config **config_list; 1598 int list_size; 1599 1600 1601 config_list = (struct glx_config **) 1602 glXGetFBConfigs(dpy, screen, &list_size); 1603 1604 if ((config_list != NULL) && (list_size > 0) && (attribList != NULL)) { 1605 list_size = choose_visual(config_list, list_size, attribList, GL_TRUE); 1606 if (list_size == 0) { 1607 XFree(config_list); 1608 config_list = NULL; 1609 } 1610 } 1611 1612 *nitems = list_size; 1613 return (GLXFBConfig *) config_list; 1614} 1615 1616 1617_X_EXPORT GLXContext 1618glXCreateNewContext(Display * dpy, GLXFBConfig fbconfig, 1619 int renderType, GLXContext shareList, Bool allowDirect) 1620{ 1621 struct glx_config *config = (struct glx_config *) fbconfig; 1622 1623 return CreateContext(dpy, config->fbconfigID, config, shareList, 1624 allowDirect, X_GLXCreateNewContext, renderType, 1625 config->screen); 1626} 1627 1628 1629_X_EXPORT GLXDrawable 1630glXGetCurrentReadDrawable(void) 1631{ 1632 struct glx_context *gc = __glXGetCurrentContext(); 1633 1634 return gc->currentReadable; 1635} 1636 1637 1638_X_EXPORT GLXFBConfig * 1639glXGetFBConfigs(Display * dpy, int screen, int *nelements) 1640{ 1641 struct glx_display *priv = __glXInitialize(dpy); 1642 struct glx_config **config_list = NULL; 1643 struct glx_config *config; 1644 unsigned num_configs = 0; 1645 int i; 1646 1647 *nelements = 0; 1648 if (priv && (priv->screens != NULL) 1649 && (screen >= 0) && (screen <= ScreenCount(dpy)) 1650 && (priv->screens[screen]->configs != NULL) 1651 && (priv->screens[screen]->configs->fbconfigID 1652 != (int) GLX_DONT_CARE)) { 1653 1654 for (config = priv->screens[screen]->configs; config != NULL; 1655 config = config->next) { 1656 if (config->fbconfigID != (int) GLX_DONT_CARE) { 1657 num_configs++; 1658 } 1659 } 1660 1661 config_list = Xmalloc(num_configs * sizeof *config_list); 1662 if (config_list != NULL) { 1663 *nelements = num_configs; 1664 i = 0; 1665 for (config = priv->screens[screen]->configs; config != NULL; 1666 config = config->next) { 1667 if (config->fbconfigID != (int) GLX_DONT_CARE) { 1668 config_list[i] = config; 1669 i++; 1670 } 1671 } 1672 } 1673 } 1674 1675 return (GLXFBConfig *) config_list; 1676} 1677 1678 1679_X_EXPORT int 1680glXGetFBConfigAttrib(Display * dpy, GLXFBConfig fbconfig, 1681 int attribute, int *value) 1682{ 1683 struct glx_config *config = ValidateGLXFBConfig(dpy, fbconfig); 1684 1685 if (config == NULL) 1686 return GLXBadFBConfig; 1687 1688 return glx_config_get(config, attribute, value); 1689} 1690 1691 1692_X_EXPORT XVisualInfo * 1693glXGetVisualFromFBConfig(Display * dpy, GLXFBConfig fbconfig) 1694{ 1695 XVisualInfo visualTemplate; 1696 struct glx_config *config = (struct glx_config *) fbconfig; 1697 int count; 1698 1699 /* 1700 ** Get a list of all visuals, return if list is empty 1701 */ 1702 visualTemplate.visualid = config->visualID; 1703 return XGetVisualInfo(dpy, VisualIDMask, &visualTemplate, &count); 1704} 1705 1706#ifndef GLX_USE_APPLEGL 1707/* 1708** GLX_SGI_swap_control 1709*/ 1710static int 1711__glXSwapIntervalSGI(int interval) 1712{ 1713 xGLXVendorPrivateReq *req; 1714 struct glx_context *gc = __glXGetCurrentContext(); 1715 struct glx_screen *psc; 1716 Display *dpy; 1717 CARD32 *interval_ptr; 1718 CARD8 opcode; 1719 1720 if (gc == NULL) { 1721 return GLX_BAD_CONTEXT; 1722 } 1723 1724 if (interval <= 0) { 1725 return GLX_BAD_VALUE; 1726 } 1727 1728 psc = GetGLXScreenConfigs( gc->currentDpy, gc->screen); 1729 1730#ifdef GLX_DIRECT_RENDERING 1731 if (gc->isDirect && psc->driScreen && psc->driScreen->setSwapInterval) { 1732 __GLXDRIdrawable *pdraw = 1733 GetGLXDRIDrawable(gc->currentDpy, gc->currentDrawable); 1734 psc->driScreen->setSwapInterval(pdraw, interval); 1735 return 0; 1736 } 1737#endif 1738 1739 dpy = gc->currentDpy; 1740 opcode = __glXSetupForCommand(dpy); 1741 if (!opcode) { 1742 return 0; 1743 } 1744 1745 /* Send the glXSwapIntervalSGI request */ 1746 LockDisplay(dpy); 1747 GetReqExtra(GLXVendorPrivate, sizeof(CARD32), req); 1748 req->reqType = opcode; 1749 req->glxCode = X_GLXVendorPrivate; 1750 req->vendorCode = X_GLXvop_SwapIntervalSGI; 1751 req->contextTag = gc->currentContextTag; 1752 1753 interval_ptr = (CARD32 *) (req + 1); 1754 *interval_ptr = interval; 1755 1756 UnlockDisplay(dpy); 1757 SyncHandle(); 1758 XFlush(dpy); 1759 1760 return 0; 1761} 1762 1763 1764/* 1765** GLX_MESA_swap_control 1766*/ 1767static int 1768__glXSwapIntervalMESA(unsigned int interval) 1769{ 1770#ifdef GLX_DIRECT_RENDERING 1771 struct glx_context *gc = __glXGetCurrentContext(); 1772 1773 if (gc != NULL && gc->isDirect) { 1774 struct glx_screen *psc; 1775 1776 psc = GetGLXScreenConfigs( gc->currentDpy, gc->screen); 1777 if (psc->driScreen && psc->driScreen->setSwapInterval) { 1778 __GLXDRIdrawable *pdraw = 1779 GetGLXDRIDrawable(gc->currentDpy, gc->currentDrawable); 1780 return psc->driScreen->setSwapInterval(pdraw, interval); 1781 } 1782 } 1783#endif 1784 1785 return GLX_BAD_CONTEXT; 1786} 1787 1788 1789static int 1790__glXGetSwapIntervalMESA(void) 1791{ 1792#ifdef GLX_DIRECT_RENDERING 1793 struct glx_context *gc = __glXGetCurrentContext(); 1794 1795 if (gc != NULL && gc->isDirect) { 1796 struct glx_screen *psc; 1797 1798 psc = GetGLXScreenConfigs( gc->currentDpy, gc->screen); 1799 if (psc->driScreen && psc->driScreen->getSwapInterval) { 1800 __GLXDRIdrawable *pdraw = 1801 GetGLXDRIDrawable(gc->currentDpy, gc->currentDrawable); 1802 return psc->driScreen->getSwapInterval(pdraw); 1803 } 1804 } 1805#endif 1806 1807 return 0; 1808} 1809 1810 1811/* 1812** GLX_SGI_video_sync 1813*/ 1814static int 1815__glXGetVideoSyncSGI(unsigned int *count) 1816{ 1817 int64_t ust, msc, sbc; 1818 int ret; 1819 struct glx_context *gc = __glXGetCurrentContext(); 1820 struct glx_screen *psc; 1821#ifdef GLX_DIRECT_RENDERING 1822 __GLXDRIdrawable *pdraw; 1823#endif 1824 1825 if (!gc) 1826 return GLX_BAD_CONTEXT; 1827 1828#ifdef GLX_DIRECT_RENDERING 1829 if (!gc->isDirect) 1830 return GLX_BAD_CONTEXT; 1831#endif 1832 1833 psc = GetGLXScreenConfigs(gc->currentDpy, gc->screen); 1834#ifdef GLX_DIRECT_RENDERING 1835 pdraw = GetGLXDRIDrawable(gc->currentDpy, gc->currentDrawable); 1836#endif 1837 1838 /* FIXME: Looking at the GLX_SGI_video_sync spec in the extension registry, 1839 * FIXME: there should be a GLX encoding for this call. I can find no 1840 * FIXME: documentation for the GLX encoding. 1841 */ 1842#ifdef GLX_DIRECT_RENDERING 1843 if (psc->driScreen && psc->driScreen->getDrawableMSC) { 1844 ret = psc->driScreen->getDrawableMSC(psc, pdraw, &ust, &msc, &sbc); 1845 *count = (unsigned) msc; 1846 return (ret == True) ? 0 : GLX_BAD_CONTEXT; 1847 } 1848#endif 1849 1850 return GLX_BAD_CONTEXT; 1851} 1852 1853static int 1854__glXWaitVideoSyncSGI(int divisor, int remainder, unsigned int *count) 1855{ 1856 struct glx_context *gc = __glXGetCurrentContext(); 1857 struct glx_screen *psc; 1858#ifdef GLX_DIRECT_RENDERING 1859 __GLXDRIdrawable *pdraw; 1860#endif 1861 int64_t ust, msc, sbc; 1862 int ret; 1863 1864 if (divisor <= 0 || remainder < 0) 1865 return GLX_BAD_VALUE; 1866 1867 if (!gc) 1868 return GLX_BAD_CONTEXT; 1869 1870#ifdef GLX_DIRECT_RENDERING 1871 if (!gc->isDirect) 1872 return GLX_BAD_CONTEXT; 1873#endif 1874 1875 psc = GetGLXScreenConfigs( gc->currentDpy, gc->screen); 1876#ifdef GLX_DIRECT_RENDERING 1877 pdraw = GetGLXDRIDrawable(gc->currentDpy, gc->currentDrawable); 1878#endif 1879 1880#ifdef GLX_DIRECT_RENDERING 1881 if (psc->driScreen && psc->driScreen->waitForMSC) { 1882 ret = psc->driScreen->waitForMSC(pdraw, 0, divisor, remainder, &ust, &msc, 1883 &sbc); 1884 *count = (unsigned) msc; 1885 return (ret == True) ? 0 : GLX_BAD_CONTEXT; 1886 } 1887#endif 1888 1889 return GLX_BAD_CONTEXT; 1890} 1891 1892#endif /* GLX_USE_APPLEGL */ 1893 1894/* 1895** GLX_SGIX_fbconfig 1896** Many of these functions are aliased to GLX 1.3 entry points in the 1897** GLX_functions table. 1898*/ 1899 1900_X_EXPORT 1901GLX_ALIAS(int, glXGetFBConfigAttribSGIX, 1902 (Display * dpy, GLXFBConfigSGIX config, int attribute, int *value), 1903 (dpy, config, attribute, value), glXGetFBConfigAttrib) 1904 1905_X_EXPORT GLX_ALIAS(GLXFBConfigSGIX *, glXChooseFBConfigSGIX, 1906 (Display * dpy, int screen, int *attrib_list, 1907 int *nelements), (dpy, screen, attrib_list, nelements), 1908 glXChooseFBConfig) 1909 1910_X_EXPORT GLX_ALIAS(XVisualInfo *, glXGetVisualFromFBConfigSGIX, 1911 (Display * dpy, GLXFBConfigSGIX config), 1912 (dpy, config), glXGetVisualFromFBConfig) 1913 1914_X_EXPORT GLXPixmap 1915glXCreateGLXPixmapWithConfigSGIX(Display * dpy, 1916 GLXFBConfigSGIX fbconfig, 1917 Pixmap pixmap) 1918{ 1919#ifndef GLX_USE_APPLEGL 1920 xGLXVendorPrivateWithReplyReq *vpreq; 1921 xGLXCreateGLXPixmapWithConfigSGIXReq *req; 1922 GLXPixmap xid = None; 1923 CARD8 opcode; 1924 struct glx_screen *psc; 1925#endif 1926 struct glx_config *config = (struct glx_config *) fbconfig; 1927 1928 1929 if ((dpy == NULL) || (config == NULL)) { 1930 return None; 1931 } 1932#ifdef GLX_USE_APPLEGL 1933 if(apple_glx_pixmap_create(dpy, config->screen, pixmap, config)) 1934 return None; 1935 return pixmap; 1936#else 1937 1938 psc = GetGLXScreenConfigs(dpy, config->screen); 1939 if ((psc != NULL) 1940 && __glXExtensionBitIsEnabled(psc, SGIX_fbconfig_bit)) { 1941 opcode = __glXSetupForCommand(dpy); 1942 if (!opcode) { 1943 return None; 1944 } 1945 1946 /* Send the glXCreateGLXPixmapWithConfigSGIX request */ 1947 LockDisplay(dpy); 1948 GetReqExtra(GLXVendorPrivateWithReply, 1949 sz_xGLXCreateGLXPixmapWithConfigSGIXReq - 1950 sz_xGLXVendorPrivateWithReplyReq, vpreq); 1951 req = (xGLXCreateGLXPixmapWithConfigSGIXReq *) vpreq; 1952 req->reqType = opcode; 1953 req->glxCode = X_GLXVendorPrivateWithReply; 1954 req->vendorCode = X_GLXvop_CreateGLXPixmapWithConfigSGIX; 1955 req->screen = config->screen; 1956 req->fbconfig = config->fbconfigID; 1957 req->pixmap = pixmap; 1958 req->glxpixmap = xid = XAllocID(dpy); 1959 UnlockDisplay(dpy); 1960 SyncHandle(); 1961 } 1962 1963 return xid; 1964#endif 1965} 1966 1967_X_EXPORT GLXContext 1968glXCreateContextWithConfigSGIX(Display * dpy, 1969 GLXFBConfigSGIX fbconfig, int renderType, 1970 GLXContext shareList, Bool allowDirect) 1971{ 1972 GLXContext gc = NULL; 1973 struct glx_config *config = (struct glx_config *) fbconfig; 1974 struct glx_screen *psc; 1975 1976 1977 if ((dpy == NULL) || (config == NULL)) { 1978 return None; 1979 } 1980 1981 psc = GetGLXScreenConfigs(dpy, config->screen); 1982 if ((psc != NULL) 1983 && __glXExtensionBitIsEnabled(psc, SGIX_fbconfig_bit)) { 1984 gc = CreateContext(dpy, config->fbconfigID, config, shareList, 1985 allowDirect, 1986 X_GLXvop_CreateContextWithConfigSGIX, renderType, 1987 config->screen); 1988 } 1989 1990 return gc; 1991} 1992 1993 1994_X_EXPORT GLXFBConfigSGIX 1995glXGetFBConfigFromVisualSGIX(Display * dpy, XVisualInfo * vis) 1996{ 1997 struct glx_display *priv; 1998 struct glx_screen *psc = NULL; 1999 2000 if ((GetGLXPrivScreenConfig(dpy, vis->screen, &priv, &psc) == Success) 2001 && __glXExtensionBitIsEnabled(psc, SGIX_fbconfig_bit) 2002 && (psc->configs->fbconfigID != (int) GLX_DONT_CARE)) { 2003 return (GLXFBConfigSGIX) glx_config_find_visual(psc->configs, 2004 vis->visualid); 2005 } 2006 2007 return NULL; 2008} 2009 2010#ifndef GLX_USE_APPLEGL 2011/* 2012** GLX_SGIX_swap_group 2013*/ 2014static void 2015__glXJoinSwapGroupSGIX(Display * dpy, GLXDrawable drawable, 2016 GLXDrawable member) 2017{ 2018 (void) dpy; 2019 (void) drawable; 2020 (void) member; 2021} 2022 2023 2024/* 2025** GLX_SGIX_swap_barrier 2026*/ 2027static void 2028__glXBindSwapBarrierSGIX(Display * dpy, GLXDrawable drawable, int barrier) 2029{ 2030 (void) dpy; 2031 (void) drawable; 2032 (void) barrier; 2033} 2034 2035static Bool 2036__glXQueryMaxSwapBarriersSGIX(Display * dpy, int screen, int *max) 2037{ 2038 (void) dpy; 2039 (void) screen; 2040 (void) max; 2041 return False; 2042} 2043 2044 2045/* 2046** GLX_OML_sync_control 2047*/ 2048static Bool 2049__glXGetSyncValuesOML(Display * dpy, GLXDrawable drawable, 2050 int64_t * ust, int64_t * msc, int64_t * sbc) 2051{ 2052 struct glx_display * const priv = __glXInitialize(dpy); 2053 int ret; 2054#ifdef GLX_DIRECT_RENDERING 2055 __GLXDRIdrawable *pdraw; 2056#endif 2057 struct glx_screen *psc; 2058 2059 if (!priv) 2060 return False; 2061 2062#ifdef GLX_DIRECT_RENDERING 2063 pdraw = GetGLXDRIDrawable(dpy, drawable); 2064 psc = pdraw ? pdraw->psc : NULL; 2065 if (pdraw && psc->driScreen->getDrawableMSC) { 2066 ret = psc->driScreen->getDrawableMSC(psc, pdraw, ust, msc, sbc); 2067 return ret; 2068 } 2069#endif 2070 2071 return False; 2072} 2073 2074#if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL) 2075_X_HIDDEN GLboolean 2076__glxGetMscRate(__GLXDRIdrawable *glxDraw, 2077 int32_t * numerator, int32_t * denominator) 2078{ 2079#ifdef XF86VIDMODE 2080 struct glx_screen *psc; 2081 XF86VidModeModeLine mode_line; 2082 int dot_clock; 2083 int i; 2084 2085 psc = glxDraw->psc; 2086 if (XF86VidModeQueryVersion(psc->dpy, &i, &i) && 2087 XF86VidModeGetModeLine(psc->dpy, psc->scr, &dot_clock, &mode_line)) { 2088 unsigned n = dot_clock * 1000; 2089 unsigned d = mode_line.vtotal * mode_line.htotal; 2090 2091# define V_INTERLACE 0x010 2092# define V_DBLSCAN 0x020 2093 2094 if (mode_line.flags & V_INTERLACE) 2095 n *= 2; 2096 else if (mode_line.flags & V_DBLSCAN) 2097 d *= 2; 2098 2099 /* The OML_sync_control spec requires that if the refresh rate is a 2100 * whole number, that the returned numerator be equal to the refresh 2101 * rate and the denominator be 1. 2102 */ 2103 2104 if (n % d == 0) { 2105 n /= d; 2106 d = 1; 2107 } 2108 else { 2109 static const unsigned f[] = { 13, 11, 7, 5, 3, 2, 0 }; 2110 2111 /* This is a poor man's way to reduce a fraction. It's far from 2112 * perfect, but it will work well enough for this situation. 2113 */ 2114 2115 for (i = 0; f[i] != 0; i++) { 2116 while (n % f[i] == 0 && d % f[i] == 0) { 2117 d /= f[i]; 2118 n /= f[i]; 2119 } 2120 } 2121 } 2122 2123 *numerator = n; 2124 *denominator = d; 2125 2126 return True; 2127 } 2128 else 2129#endif 2130 2131 return False; 2132} 2133#endif 2134 2135/** 2136 * Determine the refresh rate of the specified drawable and display. 2137 * 2138 * \param dpy Display whose refresh rate is to be determined. 2139 * \param drawable Drawable whose refresh rate is to be determined. 2140 * \param numerator Numerator of the refresh rate. 2141 * \param demoninator Denominator of the refresh rate. 2142 * \return If the refresh rate for the specified display and drawable could 2143 * be calculated, True is returned. Otherwise False is returned. 2144 * 2145 * \note This function is implemented entirely client-side. A lot of other 2146 * functionality is required to export GLX_OML_sync_control, so on 2147 * XFree86 this function can be called for direct-rendering contexts 2148 * when GLX_OML_sync_control appears in the client extension string. 2149 */ 2150 2151_X_HIDDEN GLboolean 2152__glXGetMscRateOML(Display * dpy, GLXDrawable drawable, 2153 int32_t * numerator, int32_t * denominator) 2154{ 2155#if defined( GLX_DIRECT_RENDERING ) && defined( XF86VIDMODE ) 2156 __GLXDRIdrawable *draw = GetGLXDRIDrawable(dpy, drawable); 2157 2158 if (draw == NULL) 2159 return False; 2160 2161 return __glxGetMscRate(draw, numerator, denominator); 2162#else 2163 (void) dpy; 2164 (void) drawable; 2165 (void) numerator; 2166 (void) denominator; 2167#endif 2168 return False; 2169} 2170 2171 2172static int64_t 2173__glXSwapBuffersMscOML(Display * dpy, GLXDrawable drawable, 2174 int64_t target_msc, int64_t divisor, int64_t remainder) 2175{ 2176 struct glx_context *gc = __glXGetCurrentContext(); 2177#ifdef GLX_DIRECT_RENDERING 2178 __GLXDRIdrawable *pdraw = GetGLXDRIDrawable(dpy, drawable); 2179 struct glx_screen *psc = pdraw ? pdraw->psc : NULL; 2180#endif 2181 2182 if (!gc) /* no GLX for this */ 2183 return -1; 2184 2185#ifdef GLX_DIRECT_RENDERING 2186 if (!pdraw || !gc->isDirect) 2187 return -1; 2188#endif 2189 2190 /* The OML_sync_control spec says these should "generate a GLX_BAD_VALUE 2191 * error", but it also says "It [glXSwapBuffersMscOML] will return a value 2192 * of -1 if the function failed because of errors detected in the input 2193 * parameters" 2194 */ 2195 if (divisor < 0 || remainder < 0 || target_msc < 0) 2196 return -1; 2197 if (divisor > 0 && remainder >= divisor) 2198 return -1; 2199 2200 if (target_msc == 0 && divisor == 0 && remainder == 0) 2201 remainder = 1; 2202 2203#ifdef GLX_DIRECT_RENDERING 2204 if (psc->driScreen && psc->driScreen->swapBuffers) 2205 return (*psc->driScreen->swapBuffers)(pdraw, target_msc, divisor, 2206 remainder); 2207#endif 2208 2209 return -1; 2210} 2211 2212 2213static Bool 2214__glXWaitForMscOML(Display * dpy, GLXDrawable drawable, 2215 int64_t target_msc, int64_t divisor, 2216 int64_t remainder, int64_t * ust, 2217 int64_t * msc, int64_t * sbc) 2218{ 2219#ifdef GLX_DIRECT_RENDERING 2220 __GLXDRIdrawable *pdraw = GetGLXDRIDrawable(dpy, drawable); 2221 struct glx_screen *psc = pdraw ? pdraw->psc : NULL; 2222 int ret; 2223#endif 2224 2225 2226 /* The OML_sync_control spec says these should "generate a GLX_BAD_VALUE 2227 * error", but the return type in the spec is Bool. 2228 */ 2229 if (divisor < 0 || remainder < 0 || target_msc < 0) 2230 return False; 2231 if (divisor > 0 && remainder >= divisor) 2232 return False; 2233 2234#ifdef GLX_DIRECT_RENDERING 2235 if (pdraw && psc->driScreen && psc->driScreen->waitForMSC) { 2236 ret = psc->driScreen->waitForMSC(pdraw, target_msc, divisor, remainder, 2237 ust, msc, sbc); 2238 return ret; 2239 } 2240#endif 2241 2242 return False; 2243} 2244 2245 2246static Bool 2247__glXWaitForSbcOML(Display * dpy, GLXDrawable drawable, 2248 int64_t target_sbc, int64_t * ust, 2249 int64_t * msc, int64_t * sbc) 2250{ 2251#ifdef GLX_DIRECT_RENDERING 2252 __GLXDRIdrawable *pdraw = GetGLXDRIDrawable(dpy, drawable); 2253 struct glx_screen *psc = pdraw ? pdraw->psc : NULL; 2254 int ret; 2255#endif 2256 2257 /* The OML_sync_control spec says this should "generate a GLX_BAD_VALUE 2258 * error", but the return type in the spec is Bool. 2259 */ 2260 if (target_sbc < 0) 2261 return False; 2262 2263#ifdef GLX_DIRECT_RENDERING 2264 if (pdraw && psc->driScreen && psc->driScreen->waitForSBC) { 2265 ret = psc->driScreen->waitForSBC(pdraw, target_sbc, ust, msc, sbc); 2266 return ret; 2267 } 2268#endif 2269 2270 return False; 2271} 2272 2273/*@}*/ 2274 2275 2276/** 2277 * Mesa extension stubs. These will help reduce portability problems. 2278 */ 2279/*@{*/ 2280 2281/** 2282 * Release all buffers associated with the specified GLX drawable. 2283 * 2284 * \todo 2285 * This function was intended for stand-alone Mesa. The issue there is that 2286 * the library doesn't get any notification when a window is closed. In 2287 * DRI there is a similar but slightly different issue. When GLX 1.3 is 2288 * supported, there are 3 different functions to destroy a drawable. It 2289 * should be possible to create GLX protocol (or have it determine which 2290 * protocol to use based on the type of the drawable) to have one function 2291 * do the work of 3. For the direct-rendering case, this function could 2292 * just call the driver's \c __DRIdrawableRec::destroyDrawable function. 2293 * This would reduce the frequency with which \c __driGarbageCollectDrawables 2294 * would need to be used. This really should be done as part of the new DRI 2295 * interface work. 2296 * 2297 * \sa http://oss.sgi.com/projects/ogl-sample/registry/MESA/release_buffers.txt 2298 * __driGarbageCollectDrawables 2299 * glXDestroyGLXPixmap 2300 * glXDestroyPbuffer glXDestroyPixmap glXDestroyWindow 2301 * glXDestroyGLXPbufferSGIX glXDestroyGLXVideoSourceSGIX 2302 */ 2303static Bool 2304__glXReleaseBuffersMESA(Display * dpy, GLXDrawable d) 2305{ 2306 (void) dpy; 2307 (void) d; 2308 return False; 2309} 2310 2311 2312_X_EXPORT GLXPixmap 2313glXCreateGLXPixmapMESA(Display * dpy, XVisualInfo * visual, 2314 Pixmap pixmap, Colormap cmap) 2315{ 2316 (void) dpy; 2317 (void) visual; 2318 (void) pixmap; 2319 (void) cmap; 2320 return 0; 2321} 2322 2323/*@}*/ 2324 2325 2326/** 2327 * GLX_MESA_copy_sub_buffer 2328 */ 2329#define X_GLXvop_CopySubBufferMESA 5154 /* temporary */ 2330static void 2331__glXCopySubBufferMESA(Display * dpy, GLXDrawable drawable, 2332 int x, int y, int width, int height) 2333{ 2334 xGLXVendorPrivateReq *req; 2335 struct glx_context *gc; 2336 GLXContextTag tag; 2337 CARD32 *drawable_ptr; 2338 INT32 *x_ptr, *y_ptr, *w_ptr, *h_ptr; 2339 CARD8 opcode; 2340 2341#if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL) 2342 __GLXDRIdrawable *pdraw = GetGLXDRIDrawable(dpy, drawable); 2343 if (pdraw != NULL) { 2344 struct glx_screen *psc = pdraw->psc; 2345 if (psc->driScreen->copySubBuffer != NULL) { 2346 glFlush(); 2347 (*psc->driScreen->copySubBuffer) (pdraw, x, y, width, height); 2348 } 2349 2350 return; 2351 } 2352#endif 2353 2354 opcode = __glXSetupForCommand(dpy); 2355 if (!opcode) 2356 return; 2357 2358 /* 2359 ** The calling thread may or may not have a current context. If it 2360 ** does, send the context tag so the server can do a flush. 2361 */ 2362 gc = __glXGetCurrentContext(); 2363 if ((gc != NULL) && (dpy == gc->currentDpy) && 2364 ((drawable == gc->currentDrawable) || 2365 (drawable == gc->currentReadable))) { 2366 tag = gc->currentContextTag; 2367 } 2368 else { 2369 tag = 0; 2370 } 2371 2372 LockDisplay(dpy); 2373 GetReqExtra(GLXVendorPrivate, sizeof(CARD32) + sizeof(INT32) * 4, req); 2374 req->reqType = opcode; 2375 req->glxCode = X_GLXVendorPrivate; 2376 req->vendorCode = X_GLXvop_CopySubBufferMESA; 2377 req->contextTag = tag; 2378 2379 drawable_ptr = (CARD32 *) (req + 1); 2380 x_ptr = (INT32 *) (drawable_ptr + 1); 2381 y_ptr = (INT32 *) (drawable_ptr + 2); 2382 w_ptr = (INT32 *) (drawable_ptr + 3); 2383 h_ptr = (INT32 *) (drawable_ptr + 4); 2384 2385 *drawable_ptr = drawable; 2386 *x_ptr = x; 2387 *y_ptr = y; 2388 *w_ptr = width; 2389 *h_ptr = height; 2390 2391 UnlockDisplay(dpy); 2392 SyncHandle(); 2393} 2394 2395/*@{*/ 2396static void 2397__glXBindTexImageEXT(Display * dpy, 2398 GLXDrawable drawable, int buffer, const int *attrib_list) 2399{ 2400 struct glx_context *gc = __glXGetCurrentContext(); 2401 2402 if (gc == NULL || gc->vtable->bind_tex_image == NULL) 2403 return; 2404 2405 gc->vtable->bind_tex_image(dpy, drawable, buffer, attrib_list); 2406} 2407 2408static void 2409__glXReleaseTexImageEXT(Display * dpy, GLXDrawable drawable, int buffer) 2410{ 2411 struct glx_context *gc = __glXGetCurrentContext(); 2412 2413 if (gc == NULL || gc->vtable->release_tex_image == NULL) 2414 return; 2415 2416 gc->vtable->release_tex_image(dpy, drawable, buffer); 2417} 2418 2419/*@}*/ 2420 2421#endif /* GLX_USE_APPLEGL */ 2422 2423/** 2424 * \c strdup is actually not a standard ANSI C or POSIX routine. 2425 * Irix will not define it if ANSI mode is in effect. 2426 * 2427 * \sa strdup 2428 */ 2429_X_HIDDEN char * 2430__glXstrdup(const char *str) 2431{ 2432 char *copy; 2433 copy = (char *) Xmalloc(strlen(str) + 1); 2434 if (!copy) 2435 return NULL; 2436 strcpy(copy, str); 2437 return copy; 2438} 2439 2440/* 2441** glXGetProcAddress support 2442*/ 2443 2444struct name_address_pair 2445{ 2446 const char *Name; 2447 GLvoid *Address; 2448}; 2449 2450#define GLX_FUNCTION(f) { # f, (GLvoid *) f } 2451#define GLX_FUNCTION2(n,f) { # n, (GLvoid *) f } 2452 2453static const struct name_address_pair GLX_functions[] = { 2454 /*** GLX_VERSION_1_0 ***/ 2455 GLX_FUNCTION(glXChooseVisual), 2456 GLX_FUNCTION(glXCopyContext), 2457 GLX_FUNCTION(glXCreateContext), 2458 GLX_FUNCTION(glXCreateGLXPixmap), 2459 GLX_FUNCTION(glXDestroyContext), 2460 GLX_FUNCTION(glXDestroyGLXPixmap), 2461 GLX_FUNCTION(glXGetConfig), 2462 GLX_FUNCTION(glXGetCurrentContext), 2463 GLX_FUNCTION(glXGetCurrentDrawable), 2464 GLX_FUNCTION(glXIsDirect), 2465 GLX_FUNCTION(glXMakeCurrent), 2466 GLX_FUNCTION(glXQueryExtension), 2467 GLX_FUNCTION(glXQueryVersion), 2468 GLX_FUNCTION(glXSwapBuffers), 2469 GLX_FUNCTION(glXUseXFont), 2470 GLX_FUNCTION(glXWaitGL), 2471 GLX_FUNCTION(glXWaitX), 2472 2473 /*** GLX_VERSION_1_1 ***/ 2474 GLX_FUNCTION(glXGetClientString), 2475 GLX_FUNCTION(glXQueryExtensionsString), 2476 GLX_FUNCTION(glXQueryServerString), 2477 2478 /*** GLX_VERSION_1_2 ***/ 2479 GLX_FUNCTION(glXGetCurrentDisplay), 2480 2481 /*** GLX_VERSION_1_3 ***/ 2482 GLX_FUNCTION(glXChooseFBConfig), 2483 GLX_FUNCTION(glXCreateNewContext), 2484 GLX_FUNCTION(glXCreatePbuffer), 2485 GLX_FUNCTION(glXCreatePixmap), 2486 GLX_FUNCTION(glXCreateWindow), 2487 GLX_FUNCTION(glXDestroyPbuffer), 2488 GLX_FUNCTION(glXDestroyPixmap), 2489 GLX_FUNCTION(glXDestroyWindow), 2490 GLX_FUNCTION(glXGetCurrentReadDrawable), 2491 GLX_FUNCTION(glXGetFBConfigAttrib), 2492 GLX_FUNCTION(glXGetFBConfigs), 2493 GLX_FUNCTION(glXGetSelectedEvent), 2494 GLX_FUNCTION(glXGetVisualFromFBConfig), 2495 GLX_FUNCTION(glXMakeContextCurrent), 2496 GLX_FUNCTION(glXQueryContext), 2497 GLX_FUNCTION(glXQueryDrawable), 2498 GLX_FUNCTION(glXSelectEvent), 2499 2500#ifndef GLX_USE_APPLEGL 2501 /*** GLX_SGI_swap_control ***/ 2502 GLX_FUNCTION2(glXSwapIntervalSGI, __glXSwapIntervalSGI), 2503 2504 /*** GLX_SGI_video_sync ***/ 2505 GLX_FUNCTION2(glXGetVideoSyncSGI, __glXGetVideoSyncSGI), 2506 GLX_FUNCTION2(glXWaitVideoSyncSGI, __glXWaitVideoSyncSGI), 2507 2508 /*** GLX_SGI_make_current_read ***/ 2509 GLX_FUNCTION2(glXMakeCurrentReadSGI, glXMakeContextCurrent), 2510 GLX_FUNCTION2(glXGetCurrentReadDrawableSGI, glXGetCurrentReadDrawable), 2511 2512 /*** GLX_EXT_import_context ***/ 2513 GLX_FUNCTION(glXFreeContextEXT), 2514 GLX_FUNCTION(glXGetContextIDEXT), 2515 GLX_FUNCTION2(glXGetCurrentDisplayEXT, glXGetCurrentDisplay), 2516 GLX_FUNCTION(glXImportContextEXT), 2517 GLX_FUNCTION2(glXQueryContextInfoEXT, glXQueryContext), 2518#endif 2519 2520 /*** GLX_SGIX_fbconfig ***/ 2521 GLX_FUNCTION2(glXGetFBConfigAttribSGIX, glXGetFBConfigAttrib), 2522 GLX_FUNCTION2(glXChooseFBConfigSGIX, glXChooseFBConfig), 2523 GLX_FUNCTION(glXCreateGLXPixmapWithConfigSGIX), 2524 GLX_FUNCTION(glXCreateContextWithConfigSGIX), 2525 GLX_FUNCTION2(glXGetVisualFromFBConfigSGIX, glXGetVisualFromFBConfig), 2526 GLX_FUNCTION(glXGetFBConfigFromVisualSGIX), 2527 2528#ifndef GLX_USE_APPLEGL 2529 /*** GLX_SGIX_pbuffer ***/ 2530 GLX_FUNCTION(glXCreateGLXPbufferSGIX), 2531 GLX_FUNCTION(glXDestroyGLXPbufferSGIX), 2532 GLX_FUNCTION(glXQueryGLXPbufferSGIX), 2533 GLX_FUNCTION(glXSelectEventSGIX), 2534 GLX_FUNCTION(glXGetSelectedEventSGIX), 2535 2536 /*** GLX_SGIX_swap_group ***/ 2537 GLX_FUNCTION2(glXJoinSwapGroupSGIX, __glXJoinSwapGroupSGIX), 2538 2539 /*** GLX_SGIX_swap_barrier ***/ 2540 GLX_FUNCTION2(glXBindSwapBarrierSGIX, __glXBindSwapBarrierSGIX), 2541 GLX_FUNCTION2(glXQueryMaxSwapBarriersSGIX, __glXQueryMaxSwapBarriersSGIX), 2542 2543 /*** GLX_MESA_copy_sub_buffer ***/ 2544 GLX_FUNCTION2(glXCopySubBufferMESA, __glXCopySubBufferMESA), 2545 2546 /*** GLX_MESA_pixmap_colormap ***/ 2547 GLX_FUNCTION(glXCreateGLXPixmapMESA), 2548 2549 /*** GLX_MESA_release_buffers ***/ 2550 GLX_FUNCTION2(glXReleaseBuffersMESA, __glXReleaseBuffersMESA), 2551 2552 /*** GLX_MESA_swap_control ***/ 2553 GLX_FUNCTION2(glXSwapIntervalMESA, __glXSwapIntervalMESA), 2554 GLX_FUNCTION2(glXGetSwapIntervalMESA, __glXGetSwapIntervalMESA), 2555#endif 2556 2557 /*** GLX_ARB_get_proc_address ***/ 2558 GLX_FUNCTION(glXGetProcAddressARB), 2559 2560 /*** GLX 1.4 ***/ 2561 GLX_FUNCTION2(glXGetProcAddress, glXGetProcAddressARB), 2562 2563#ifndef GLX_USE_APPLEGL 2564 /*** GLX_OML_sync_control ***/ 2565 GLX_FUNCTION2(glXWaitForSbcOML, __glXWaitForSbcOML), 2566 GLX_FUNCTION2(glXWaitForMscOML, __glXWaitForMscOML), 2567 GLX_FUNCTION2(glXSwapBuffersMscOML, __glXSwapBuffersMscOML), 2568 GLX_FUNCTION2(glXGetMscRateOML, __glXGetMscRateOML), 2569 GLX_FUNCTION2(glXGetSyncValuesOML, __glXGetSyncValuesOML), 2570 2571 /*** GLX_EXT_texture_from_pixmap ***/ 2572 GLX_FUNCTION2(glXBindTexImageEXT, __glXBindTexImageEXT), 2573 GLX_FUNCTION2(glXReleaseTexImageEXT, __glXReleaseTexImageEXT), 2574#endif 2575 2576#if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL) 2577 /*** DRI configuration ***/ 2578 GLX_FUNCTION(glXGetScreenDriver), 2579 GLX_FUNCTION(glXGetDriverConfig), 2580#endif 2581 2582 {NULL, NULL} /* end of list */ 2583}; 2584 2585static const GLvoid * 2586get_glx_proc_address(const char *funcName) 2587{ 2588 GLuint i; 2589 2590 /* try static functions */ 2591 for (i = 0; GLX_functions[i].Name; i++) { 2592 if (strcmp(GLX_functions[i].Name, funcName) == 0) 2593 return GLX_functions[i].Address; 2594 } 2595 2596 return NULL; 2597} 2598 2599/** 2600 * Get the address of a named GL function. This is the pre-GLX 1.4 name for 2601 * \c glXGetProcAddress. 2602 * 2603 * \param procName Name of a GL or GLX function. 2604 * \returns A pointer to the named function 2605 * 2606 * \sa glXGetProcAddress 2607 */ 2608_X_EXPORT void (*glXGetProcAddressARB(const GLubyte * procName)) (void) 2609{ 2610 typedef void (*gl_function) (void); 2611 gl_function f; 2612 2613 2614 /* Search the table of GLX and internal functions first. If that 2615 * fails and the supplied name could be a valid core GL name, try 2616 * searching the core GL function table. This check is done to prevent 2617 * DRI based drivers from searching the core GL function table for 2618 * internal API functions. 2619 */ 2620 f = (gl_function) get_glx_proc_address((const char *) procName); 2621 if ((f == NULL) && (procName[0] == 'g') && (procName[1] == 'l') 2622 && (procName[2] != 'X')) { 2623#ifdef GLX_SHARED_GLAPI 2624 f = (gl_function) __indirect_get_proc_address((const char *) procName); 2625#endif 2626 if (!f) 2627 f = (gl_function) _glapi_get_proc_address((const char *) procName); 2628 if (!f) { 2629 struct glx_context *gc = __glXGetCurrentContext(); 2630 2631 if (gc != NULL && gc->vtable->get_proc_address != NULL) 2632 f = gc->vtable->get_proc_address((const char *) procName); 2633 } 2634 } 2635 return f; 2636} 2637 2638/** 2639 * Get the address of a named GL function. This is the GLX 1.4 name for 2640 * \c glXGetProcAddressARB. 2641 * 2642 * \param procName Name of a GL or GLX function. 2643 * \returns A pointer to the named function 2644 * 2645 * \sa glXGetProcAddressARB 2646 */ 2647_X_EXPORT void (*glXGetProcAddress(const GLubyte * procName)) (void) 2648#if defined(__GNUC__) && !defined(GLX_ALIAS_UNSUPPORTED) 2649 __attribute__ ((alias("glXGetProcAddressARB"))); 2650#else 2651{ 2652 return glXGetProcAddressARB(procName); 2653} 2654#endif /* __GNUC__ */ 2655 2656 2657#if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL) 2658/** 2659 * Get the unadjusted system time (UST). Currently, the UST is measured in 2660 * microseconds since Epoc. The actual resolution of the UST may vary from 2661 * system to system, and the units may vary from release to release. 2662 * Drivers should not call this function directly. They should instead use 2663 * \c glXGetProcAddress to obtain a pointer to the function. 2664 * 2665 * \param ust Location to store the 64-bit UST 2666 * \returns Zero on success or a negative errno value on failure. 2667 * 2668 * \sa glXGetProcAddress, PFNGLXGETUSTPROC 2669 * 2670 * \since Internal API version 20030317. 2671 */ 2672_X_HIDDEN int 2673__glXGetUST(int64_t * ust) 2674{ 2675 struct timeval tv; 2676 2677 if (ust == NULL) { 2678 return -EFAULT; 2679 } 2680 2681 if (gettimeofday(&tv, NULL) == 0) { 2682 ust[0] = (tv.tv_sec * 1000000) + tv.tv_usec; 2683 return 0; 2684 } 2685 else { 2686 return -errno; 2687 } 2688} 2689#endif /* GLX_DIRECT_RENDERING */ 2690