glxcmds.c revision ae9487c29984addc96a6d617292370fbc3f8ff9a
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 40#ifdef GLX_DIRECT_RENDERING 41#ifdef GLX_USE_APPLEGL 42#include "apple_glx_context.h" 43#include "apple_glx.h" 44#include "glx_error.h" 45#else 46#include <sys/time.h> 47#include <X11/extensions/xf86vmode.h> 48#include "xf86dri.h" 49#endif 50#else 51#endif 52 53#if defined(USE_XCB) 54#include <X11/Xlib-xcb.h> 55#include <xcb/xcb.h> 56#include <xcb/glx.h> 57#endif 58 59static const char __glXGLXClientVendorName[] = "Mesa Project and SGI"; 60static const char __glXGLXClientVersion[] = "1.4"; 61 62#if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL) 63 64static Bool windowExistsFlag; 65static int 66windowExistsErrorHandler(Display * dpy, XErrorEvent * xerr) 67{ 68 (void) dpy; 69 70 if (xerr->error_code == BadWindow) { 71 windowExistsFlag = GL_FALSE; 72 } 73 return 0; 74} 75 76/** 77 * Find drawables in the local hash that have been destroyed on the 78 * server. 79 * 80 * \param dpy Display to destroy drawables for 81 * \param screen Screen number to destroy drawables for 82 */ 83_X_HIDDEN void 84GarbageCollectDRIDrawables(struct glx_screen * sc) 85{ 86 XID draw; 87 __GLXDRIdrawable *pdraw; 88 struct glx_display *priv = sc->display; 89 XWindowAttributes xwa; 90 int (*oldXErrorHandler) (Display *, XErrorEvent *); 91 92 /* Set no-op error handler so Xlib doesn't bail out if the windows 93 * has alreay been destroyed on the server. */ 94 XSync(priv->dpy, GL_FALSE); 95 oldXErrorHandler = XSetErrorHandler(windowExistsErrorHandler); 96 97 if (__glxHashFirst(priv->drawHash, &draw, (void *) &pdraw) == 1) { 98 do { 99 windowExistsFlag = GL_TRUE; 100 XGetWindowAttributes(priv->dpy, draw, &xwa); /* dummy request */ 101 if (!windowExistsFlag) { 102 /* Destroy the local drawable data, if the drawable no 103 longer exists in the Xserver */ 104 (*pdraw->destroyDrawable) (pdraw); 105 __glxHashDelete(priv->drawHash, draw); 106 } 107 } while (__glxHashNext(priv->drawHash, &draw, (void *) &pdraw) == 1); 108 } 109 110 XSync(priv->dpy, GL_FALSE); 111 XSetErrorHandler(oldXErrorHandler); 112} 113 114/** 115 * Get the __DRIdrawable for the drawable associated with a GLXContext 116 * 117 * \param dpy The display associated with \c drawable. 118 * \param drawable GLXDrawable whose __DRIdrawable part is to be retrieved. 119 * \param scrn_num If non-NULL, the drawables screen is stored there 120 * \returns A pointer to the context's __DRIdrawable on success, or NULL if 121 * the drawable is not associated with a direct-rendering context. 122 */ 123_X_HIDDEN __GLXDRIdrawable * 124GetGLXDRIDrawable(Display * dpy, GLXDrawable drawable) 125{ 126 struct glx_display *priv = __glXInitialize(dpy); 127 __GLXDRIdrawable *pdraw; 128 129 if (priv == NULL) 130 return NULL; 131 132 if (__glxHashLookup(priv->drawHash, drawable, (void *) &pdraw) == 0) 133 return pdraw; 134 135 return NULL; 136} 137 138#endif 139 140 141/** 142 * Get the GLX per-screen data structure associated with a GLX context. 143 * 144 * \param dpy Display for which the GLX per-screen information is to be 145 * retrieved. 146 * \param scrn Screen on \c dpy for which the GLX per-screen information is 147 * to be retrieved. 148 * \returns A pointer to the GLX per-screen data if \c dpy and \c scrn 149 * specify a valid GLX screen, or NULL otherwise. 150 * 151 * \todo Should this function validate that \c scrn is within the screen 152 * number range for \c dpy? 153 */ 154 155static struct glx_screen * 156GetGLXScreenConfigs(Display * dpy, int scrn) 157{ 158 struct glx_display *const priv = __glXInitialize(dpy); 159 160 return (priv 161 && priv->screens != 162 NULL) ? priv->screens[scrn] : NULL; 163} 164 165 166static int 167GetGLXPrivScreenConfig(Display * dpy, int scrn, struct glx_display ** ppriv, 168 struct glx_screen ** ppsc) 169{ 170 /* Initialize the extension, if needed . This has the added value 171 * of initializing/allocating the display private 172 */ 173 174 if (dpy == NULL) { 175 return GLX_NO_EXTENSION; 176 } 177 178 *ppriv = __glXInitialize(dpy); 179 if (*ppriv == NULL) { 180 return GLX_NO_EXTENSION; 181 } 182 183 /* Check screen number to see if its valid */ 184 if ((scrn < 0) || (scrn >= ScreenCount(dpy))) { 185 return GLX_BAD_SCREEN; 186 } 187 188 /* Check to see if the GL is supported on this screen */ 189 *ppsc = (*ppriv)->screens[scrn]; 190 if ((*ppsc)->configs == NULL) { 191 /* No support for GL on this screen regardless of visual */ 192 return GLX_BAD_VISUAL; 193 } 194 195 return Success; 196} 197 198 199/** 200 * Determine if a \c GLXFBConfig supplied by the application is valid. 201 * 202 * \param dpy Application supplied \c Display pointer. 203 * \param config Application supplied \c GLXFBConfig. 204 * 205 * \returns If the \c GLXFBConfig is valid, the a pointer to the matching 206 * \c struct glx_config structure is returned. Otherwise, \c NULL 207 * is returned. 208 */ 209static struct glx_config * 210ValidateGLXFBConfig(Display * dpy, GLXFBConfig fbconfig) 211{ 212 struct glx_display *const priv = __glXInitialize(dpy); 213 int num_screens = ScreenCount(dpy); 214 unsigned i; 215 struct glx_config *config; 216 217 if (priv != NULL) { 218 for (i = 0; i < num_screens; i++) { 219 for (config = priv->screens[i]->configs; config != NULL; 220 config = config->next) { 221 if (config == (struct glx_config *) fbconfig) { 222 return config; 223 } 224 } 225 } 226 } 227 228 return NULL; 229} 230 231_X_HIDDEN Bool 232glx_context_init(struct glx_context *gc, 233 struct glx_screen *psc, struct glx_config *config) 234{ 235 gc->majorOpcode = __glXSetupForCommand(psc->display->dpy); 236 if (!gc->majorOpcode) 237 return GL_FALSE; 238 239 gc->screen = psc->scr; 240 gc->psc = psc; 241 gc->config = config; 242 gc->isDirect = GL_TRUE; 243 gc->currentContextTag = -1; 244 245 return GL_TRUE; 246} 247 248 249/** 250 * Create a new context. Exactly one of \c vis and \c fbconfig should be 251 * non-NULL. 252 * 253 * \param use_glx_1_3 For FBConfigs, should GLX 1.3 protocol or 254 * SGIX_fbconfig protocol be used? 255 * \param renderType For FBConfigs, what is the rendering type? 256 */ 257 258static GLXContext 259CreateContext(Display * dpy, int generic_id, 260 struct glx_config *config, 261 GLXContext shareList_user, 262 Bool allowDirect, 263 unsigned code, int renderType, int screen) 264{ 265 struct glx_context *gc = NULL; 266 struct glx_screen *const psc = GetGLXScreenConfigs(dpy, screen); 267 struct glx_context *shareList = (struct glx_context *) shareList_user; 268 if (dpy == NULL) 269 return NULL; 270 271 if (generic_id == None) 272 return NULL; 273 274 gc = NULL; 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 if (!gc) 280 return NULL; 281 282 LockDisplay(dpy); 283 switch (code) { 284 case X_GLXCreateContext: { 285 xGLXCreateContextReq *req; 286 287 /* Send the glXCreateContext request */ 288 GetReq(GLXCreateContext, req); 289 req->reqType = gc->majorOpcode; 290 req->glxCode = X_GLXCreateContext; 291 req->context = gc->xid = XAllocID(dpy); 292 req->visual = generic_id; 293 req->screen = screen; 294 req->shareList = shareList ? shareList->xid : None; 295 req->isDirect = gc->isDirect; 296 break; 297 } 298 299 case X_GLXCreateNewContext: { 300 xGLXCreateNewContextReq *req; 301 302 /* Send the glXCreateNewContext request */ 303 GetReq(GLXCreateNewContext, req); 304 req->reqType = gc->majorOpcode; 305 req->glxCode = X_GLXCreateNewContext; 306 req->context = gc->xid = XAllocID(dpy); 307 req->fbconfig = generic_id; 308 req->screen = screen; 309 req->renderType = renderType; 310 req->shareList = shareList ? shareList->xid : None; 311 req->isDirect = gc->isDirect; 312 break; 313 } 314 315 case X_GLXvop_CreateContextWithConfigSGIX: { 316 xGLXVendorPrivateWithReplyReq *vpreq; 317 xGLXCreateContextWithConfigSGIXReq *req; 318 319 /* Send the glXCreateNewContext request */ 320 GetReqExtra(GLXVendorPrivateWithReply, 321 sz_xGLXCreateContextWithConfigSGIXReq - 322 sz_xGLXVendorPrivateWithReplyReq, vpreq); 323 req = (xGLXCreateContextWithConfigSGIXReq *) vpreq; 324 req->reqType = gc->majorOpcode; 325 req->glxCode = X_GLXVendorPrivateWithReply; 326 req->vendorCode = X_GLXvop_CreateContextWithConfigSGIX; 327 req->context = gc->xid = XAllocID(dpy); 328 req->fbconfig = generic_id; 329 req->screen = screen; 330 req->renderType = renderType; 331 req->shareList = shareList ? shareList->xid : None; 332 req->isDirect = gc->isDirect; 333 break; 334 } 335 336 default: 337 /* What to do here? This case is the sign of an internal error. It 338 * should never be reachable. 339 */ 340 break; 341 } 342 343 UnlockDisplay(dpy); 344 SyncHandle(); 345 346 gc->imported = GL_FALSE; 347 gc->renderType = renderType; 348 349 return (GLXContext) gc; 350} 351 352_X_EXPORT GLXContext 353glXCreateContext(Display * dpy, XVisualInfo * vis, 354 GLXContext shareList, Bool allowDirect) 355{ 356 struct glx_config *config = NULL; 357 int renderType = 0; 358 359#if defined(GLX_DIRECT_RENDERING) || defined(GLX_USE_APPLEGL) 360 struct glx_screen *const psc = GetGLXScreenConfigs(dpy, vis->screen); 361 362 config = glx_config_find_visual(psc->visuals, vis->visualid); 363 if (config == NULL) { 364 xError error; 365 366 error.errorCode = BadValue; 367 error.resourceID = vis->visualid; 368 error.sequenceNumber = dpy->request; 369 error.type = X_Error; 370 error.majorCode = __glXSetupForCommand(dpy); 371 error.minorCode = X_GLXCreateContext; 372 _XError(dpy, &error); 373 return None; 374 } 375 376 renderType = config->rgbMode ? GLX_RGBA_TYPE : GLX_COLOR_INDEX_TYPE; 377#endif 378 379 return CreateContext(dpy, vis->visualid, config, shareList, allowDirect, 380 X_GLXCreateContext, renderType, vis->screen); 381} 382 383_X_HIDDEN void 384glx_send_destroy_context(Display *dpy, XID xid) 385{ 386 CARD8 opcode = __glXSetupForCommand(dpy); 387 xGLXDestroyContextReq *req; 388 389 LockDisplay(dpy); 390 GetReq(GLXDestroyContext, req); 391 req->reqType = opcode; 392 req->glxCode = X_GLXDestroyContext; 393 req->context = xid; 394 UnlockDisplay(dpy); 395 SyncHandle(); 396} 397 398/* 399** Destroy the named context 400*/ 401static void 402DestroyContext(Display * dpy, GLXContext ctx) 403{ 404 struct glx_context *gc = (struct glx_context *) ctx; 405 406 if (!gc) 407 return; 408 409 __glXLock(); 410 if (gc->currentDpy) { 411 /* This context is bound to some thread. According to the man page, 412 * we should not actually delete the context until it's unbound. 413 * Note that we set gc->xid = None above. In MakeContextCurrent() 414 * we check for that and delete the context there. 415 */ 416 if (!gc->imported) 417 glx_send_destroy_context(dpy, gc->xid); 418 gc->xid = None; 419 __glXUnlock(); 420 return; 421 } 422 __glXUnlock(); 423 424 if (gc->vtable->destroy) 425 gc->vtable->destroy(gc); 426} 427 428_X_EXPORT void 429glXDestroyContext(Display * dpy, GLXContext gc) 430{ 431 DestroyContext(dpy, gc); 432} 433 434/* 435** Return the major and minor version #s for the GLX extension 436*/ 437_X_EXPORT Bool 438glXQueryVersion(Display * dpy, int *major, int *minor) 439{ 440 struct glx_display *priv; 441 442 /* Init the extension. This fetches the major and minor version. */ 443 priv = __glXInitialize(dpy); 444 if (!priv) 445 return GL_FALSE; 446 447 if (major) 448 *major = priv->majorVersion; 449 if (minor) 450 *minor = priv->minorVersion; 451 return GL_TRUE; 452} 453 454/* 455** Query the existance of the GLX extension 456*/ 457_X_EXPORT Bool 458glXQueryExtension(Display * dpy, int *errorBase, int *eventBase) 459{ 460 int major_op, erb, evb; 461 Bool rv; 462 463 rv = XQueryExtension(dpy, GLX_EXTENSION_NAME, &major_op, &evb, &erb); 464 if (rv) { 465 if (errorBase) 466 *errorBase = erb; 467 if (eventBase) 468 *eventBase = evb; 469 } 470 return rv; 471} 472 473/* 474** Put a barrier in the token stream that forces the GL to finish its 475** work before X can proceed. 476*/ 477_X_EXPORT void 478glXWaitGL(void) 479{ 480 struct glx_context *gc = __glXGetCurrentContext(); 481 482 if (gc && gc->vtable->wait_gl) 483 gc->vtable->wait_gl(gc); 484} 485 486/* 487** Put a barrier in the token stream that forces X to finish its 488** work before GL can proceed. 489*/ 490_X_EXPORT void 491glXWaitX(void) 492{ 493 struct glx_context *gc = __glXGetCurrentContext(); 494 495 if (gc && gc->vtable->wait_x) 496 gc->vtable->wait_x(gc); 497} 498 499_X_EXPORT void 500glXUseXFont(Font font, int first, int count, int listBase) 501{ 502 struct glx_context *gc = __glXGetCurrentContext(); 503 504 if (gc && gc->vtable->use_x_font) 505 gc->vtable->use_x_font(gc, font, first, count, listBase); 506} 507 508/************************************************************************/ 509 510/* 511** Copy the source context to the destination context using the 512** attribute "mask". 513*/ 514_X_EXPORT void 515glXCopyContext(Display * dpy, GLXContext source_user, 516 GLXContext dest_user, unsigned long mask) 517{ 518 struct glx_context *source = (struct glx_context *) source_user; 519 struct glx_context *dest = (struct glx_context *) dest_user; 520#ifdef GLX_USE_APPLEGL 521 struct glx_context *gc = __glXGetCurrentContext(); 522 int errorcode; 523 bool x11error; 524 525 if(apple_glx_copy_context(gc->driContext, source->driContext, dest->driContext, 526 mask, &errorcode, &x11error)) { 527 __glXSendError(dpy, errorcode, 0, X_GLXCopyContext, x11error); 528 } 529 530#else 531 xGLXCopyContextReq *req; 532 struct glx_context *gc = __glXGetCurrentContext(); 533 GLXContextTag tag; 534 CARD8 opcode; 535 536 opcode = __glXSetupForCommand(dpy); 537 if (!opcode) { 538 return; 539 } 540 541#if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL) 542 if (gc->isDirect) { 543 /* NOT_DONE: This does not work yet */ 544 } 545#endif 546 547 /* 548 ** If the source is the current context, send its tag so that the context 549 ** can be flushed before the copy. 550 */ 551 if (source == gc && dpy == gc->currentDpy) { 552 tag = gc->currentContextTag; 553 } 554 else { 555 tag = 0; 556 } 557 558 /* Send the glXCopyContext request */ 559 LockDisplay(dpy); 560 GetReq(GLXCopyContext, req); 561 req->reqType = opcode; 562 req->glxCode = X_GLXCopyContext; 563 req->source = source ? source->xid : None; 564 req->dest = dest ? dest->xid : None; 565 req->mask = mask; 566 req->contextTag = tag; 567 UnlockDisplay(dpy); 568 SyncHandle(); 569#endif /* GLX_USE_APPLEGL */ 570} 571 572 573/** 574 * Determine if a context uses direct rendering. 575 * 576 * \param dpy Display where the context was created. 577 * \param contextID ID of the context to be tested. 578 * 579 * \returns \c GL_TRUE if the context is direct rendering or not. 580 */ 581static Bool 582__glXIsDirect(Display * dpy, GLXContextID contextID) 583{ 584#if !defined(USE_XCB) 585 xGLXIsDirectReq *req; 586 xGLXIsDirectReply reply; 587#endif 588 CARD8 opcode; 589 590 opcode = __glXSetupForCommand(dpy); 591 if (!opcode) { 592 return GL_FALSE; 593 } 594 595#ifdef USE_XCB 596 xcb_connection_t *c = XGetXCBConnection(dpy); 597 xcb_glx_is_direct_reply_t *reply = xcb_glx_is_direct_reply(c, 598 xcb_glx_is_direct 599 (c, contextID), 600 NULL); 601 602 const Bool is_direct = reply->is_direct ? True : False; 603 free(reply); 604 605 return is_direct; 606#else 607 /* Send the glXIsDirect request */ 608 LockDisplay(dpy); 609 GetReq(GLXIsDirect, req); 610 req->reqType = opcode; 611 req->glxCode = X_GLXIsDirect; 612 req->context = contextID; 613 _XReply(dpy, (xReply *) & reply, 0, False); 614 UnlockDisplay(dpy); 615 SyncHandle(); 616 617 return reply.isDirect; 618#endif /* USE_XCB */ 619} 620 621/** 622 * \todo 623 * Shouldn't this function \b always return \c GL_FALSE when 624 * \c GLX_DIRECT_RENDERING is not defined? Do we really need to bother with 625 * the GLX protocol here at all? 626 */ 627_X_EXPORT Bool 628glXIsDirect(Display * dpy, GLXContext gc_user) 629{ 630 struct glx_context *gc = (struct glx_context *) gc_user; 631 632 if (!gc) { 633 return GL_FALSE; 634 } 635 else if (gc->isDirect) { 636 return GL_TRUE; 637 } 638#ifdef GLX_USE_APPLEGL /* TODO: indirect on darwin */ 639 return GL_FALSE; 640#else 641 return __glXIsDirect(dpy, gc->xid); 642#endif 643} 644 645_X_EXPORT GLXPixmap 646glXCreateGLXPixmap(Display * dpy, XVisualInfo * vis, Pixmap pixmap) 647{ 648#ifdef GLX_USE_APPLEGL 649 int screen = vis->screen; 650 struct glx_screen *const psc = GetGLXScreenConfigs(dpy, screen); 651 const struct glx_config *config; 652 653 config = _gl_context_modes_find_visual(psc->visuals, vis->visualid); 654 655 if(apple_glx_pixmap_create(dpy, vis->screen, pixmap, config)) 656 return None; 657 658 return pixmap; 659#else 660 xGLXCreateGLXPixmapReq *req; 661 GLXPixmap xid; 662 CARD8 opcode; 663 664 opcode = __glXSetupForCommand(dpy); 665 if (!opcode) { 666 return None; 667 } 668 669 /* Send the glXCreateGLXPixmap request */ 670 LockDisplay(dpy); 671 GetReq(GLXCreateGLXPixmap, req); 672 req->reqType = opcode; 673 req->glxCode = X_GLXCreateGLXPixmap; 674 req->screen = vis->screen; 675 req->visual = vis->visualid; 676 req->pixmap = pixmap; 677 req->glxpixmap = xid = XAllocID(dpy); 678 UnlockDisplay(dpy); 679 SyncHandle(); 680 681#if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL) 682 do { 683 /* FIXME: Maybe delay __DRIdrawable creation until the drawable 684 * is actually bound to a context... */ 685 686 struct glx_display *const priv = __glXInitialize(dpy); 687 __GLXDRIdrawable *pdraw; 688 struct glx_screen *psc; 689 struct glx_config *config; 690 691 psc = priv->screens[vis->screen]; 692 if (psc->driScreen == NULL) 693 break; 694 config = glx_config_find_visual(psc->visuals, vis->visualid); 695 pdraw = psc->driScreen->createDrawable(psc, pixmap, req->glxpixmap, config); 696 if (pdraw == NULL) { 697 fprintf(stderr, "failed to create pixmap\n"); 698 break; 699 } 700 701 if (__glxHashInsert(priv->drawHash, req->glxpixmap, pdraw)) { 702 (*pdraw->destroyDrawable) (pdraw); 703 return None; /* FIXME: Check what we're supposed to do here... */ 704 } 705 } while (0); 706#endif 707 708 return xid; 709#endif 710} 711 712/* 713** Destroy the named pixmap 714*/ 715_X_EXPORT void 716glXDestroyGLXPixmap(Display * dpy, GLXPixmap glxpixmap) 717{ 718#ifdef GLX_USE_APPLEGL 719 if(apple_glx_pixmap_destroy(dpy, glxpixmap)) 720 __glXSendError(dpy, GLXBadPixmap, glxpixmap, X_GLXDestroyPixmap, false); 721#else 722 xGLXDestroyGLXPixmapReq *req; 723 CARD8 opcode; 724 725 opcode = __glXSetupForCommand(dpy); 726 if (!opcode) { 727 return; 728 } 729 730 /* Send the glXDestroyGLXPixmap request */ 731 LockDisplay(dpy); 732 GetReq(GLXDestroyGLXPixmap, req); 733 req->reqType = opcode; 734 req->glxCode = X_GLXDestroyGLXPixmap; 735 req->glxpixmap = glxpixmap; 736 UnlockDisplay(dpy); 737 SyncHandle(); 738 739#if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL) 740 { 741 struct glx_display *const priv = __glXInitialize(dpy); 742 __GLXDRIdrawable *pdraw = GetGLXDRIDrawable(dpy, glxpixmap); 743 744 if (pdraw != NULL) { 745 (*pdraw->destroyDrawable) (pdraw); 746 __glxHashDelete(priv->drawHash, glxpixmap); 747 } 748 } 749#endif 750#endif /* GLX_USE_APPLEGL */ 751} 752 753_X_EXPORT void 754glXSwapBuffers(Display * dpy, GLXDrawable drawable) 755{ 756#ifdef GLX_USE_APPLEGL 757 GLXContext gc = glXGetCurrentContext(); 758 if(gc && apple_glx_is_current_drawable(dpy, gc->driContext, drawable)) { 759 apple_glx_swap_buffers(gc->driContext); 760 } else { 761 __glXSendError(dpy, GLXBadCurrentWindow, 0, X_GLXSwapBuffers, false); 762 } 763#else 764 struct glx_context *gc; 765 GLXContextTag tag; 766 CARD8 opcode; 767#ifdef USE_XCB 768 xcb_connection_t *c; 769#else 770 xGLXSwapBuffersReq *req; 771#endif 772 773#if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL) 774 __GLXDRIdrawable *pdraw = GetGLXDRIDrawable(dpy, drawable); 775 776 if (pdraw != NULL) { 777 glFlush(); 778 (*pdraw->psc->driScreen->swapBuffers)(pdraw, 0, 0, 0); 779 return; 780 } 781#endif 782 783 opcode = __glXSetupForCommand(dpy); 784 if (!opcode) { 785 return; 786 } 787 788 /* 789 ** The calling thread may or may not have a current context. If it 790 ** does, send the context tag so the server can do a flush. 791 */ 792 gc = __glXGetCurrentContext(); 793 if ((gc != NULL) && (dpy == gc->currentDpy) && 794 ((drawable == gc->currentDrawable) 795 || (drawable == gc->currentReadable))) { 796 tag = gc->currentContextTag; 797 } 798 else { 799 tag = 0; 800 } 801 802#ifdef USE_XCB 803 c = XGetXCBConnection(dpy); 804 xcb_glx_swap_buffers(c, tag, drawable); 805 xcb_flush(c); 806#else 807 /* Send the glXSwapBuffers request */ 808 LockDisplay(dpy); 809 GetReq(GLXSwapBuffers, req); 810 req->reqType = opcode; 811 req->glxCode = X_GLXSwapBuffers; 812 req->drawable = drawable; 813 req->contextTag = tag; 814 UnlockDisplay(dpy); 815 SyncHandle(); 816 XFlush(dpy); 817#endif /* USE_XCB */ 818#endif /* GLX_USE_APPLEGL */ 819} 820 821 822/* 823** Return configuration information for the given display, screen and 824** visual combination. 825*/ 826_X_EXPORT int 827glXGetConfig(Display * dpy, XVisualInfo * vis, int attribute, 828 int *value_return) 829{ 830 struct glx_display *priv; 831 struct glx_screen *psc; 832 struct glx_config *config; 833 int status; 834 835 status = GetGLXPrivScreenConfig(dpy, vis->screen, &priv, &psc); 836 if (status == Success) { 837 config = glx_config_find_visual(psc->visuals, vis->visualid); 838 839 /* Lookup attribute after first finding a match on the visual */ 840 if (config != NULL) { 841 return glx_config_get(config, attribute, value_return); 842 } 843 844 status = GLX_BAD_VISUAL; 845 } 846 847 /* 848 ** If we can't find the config for this visual, this visual is not 849 ** supported by the OpenGL implementation on the server. 850 */ 851 if ((status == GLX_BAD_VISUAL) && (attribute == GLX_USE_GL)) { 852 *value_return = GL_FALSE; 853 status = Success; 854 } 855 856 return status; 857} 858 859/************************************************************************/ 860 861static void 862init_fbconfig_for_chooser(struct glx_config * config, 863 GLboolean fbconfig_style_tags) 864{ 865 memset(config, 0, sizeof(struct glx_config)); 866 config->visualID = (XID) GLX_DONT_CARE; 867 config->visualType = GLX_DONT_CARE; 868 869 /* glXChooseFBConfig specifies different defaults for these two than 870 * glXChooseVisual. 871 */ 872 if (fbconfig_style_tags) { 873 config->rgbMode = GL_TRUE; 874 config->doubleBufferMode = GLX_DONT_CARE; 875 } 876 877 config->visualRating = GLX_DONT_CARE; 878 config->transparentPixel = GLX_NONE; 879 config->transparentRed = GLX_DONT_CARE; 880 config->transparentGreen = GLX_DONT_CARE; 881 config->transparentBlue = GLX_DONT_CARE; 882 config->transparentAlpha = GLX_DONT_CARE; 883 config->transparentIndex = GLX_DONT_CARE; 884 885 config->drawableType = GLX_WINDOW_BIT; 886 config->renderType = 887 (config->rgbMode) ? GLX_RGBA_BIT : GLX_COLOR_INDEX_BIT; 888 config->xRenderable = GLX_DONT_CARE; 889 config->fbconfigID = (GLXFBConfigID) (GLX_DONT_CARE); 890 891 config->swapMethod = GLX_DONT_CARE; 892} 893 894#define MATCH_DONT_CARE( param ) \ 895 do { \ 896 if ( ((int) a-> param != (int) GLX_DONT_CARE) \ 897 && (a-> param != b-> param) ) { \ 898 return False; \ 899 } \ 900 } while ( 0 ) 901 902#define MATCH_MINIMUM( param ) \ 903 do { \ 904 if ( ((int) a-> param != (int) GLX_DONT_CARE) \ 905 && (a-> param > b-> param) ) { \ 906 return False; \ 907 } \ 908 } while ( 0 ) 909 910#define MATCH_EXACT( param ) \ 911 do { \ 912 if ( a-> param != b-> param) { \ 913 return False; \ 914 } \ 915 } while ( 0 ) 916 917/* Test that all bits from a are contained in b */ 918#define MATCH_MASK(param) \ 919 do { \ 920 if ((a->param & ~b->param) != 0) \ 921 return False; \ 922 } while (0); 923 924/** 925 * Determine if two GLXFBConfigs are compatible. 926 * 927 * \param a Application specified config to test. 928 * \param b Server specified config to test against \c a. 929 */ 930static Bool 931fbconfigs_compatible(const struct glx_config * const a, 932 const struct glx_config * const b) 933{ 934 MATCH_DONT_CARE(doubleBufferMode); 935 MATCH_DONT_CARE(visualType); 936 MATCH_DONT_CARE(visualRating); 937 MATCH_DONT_CARE(xRenderable); 938 MATCH_DONT_CARE(fbconfigID); 939 MATCH_DONT_CARE(swapMethod); 940 941 MATCH_MINIMUM(rgbBits); 942 MATCH_MINIMUM(numAuxBuffers); 943 MATCH_MINIMUM(redBits); 944 MATCH_MINIMUM(greenBits); 945 MATCH_MINIMUM(blueBits); 946 MATCH_MINIMUM(alphaBits); 947 MATCH_MINIMUM(depthBits); 948 MATCH_MINIMUM(stencilBits); 949 MATCH_MINIMUM(accumRedBits); 950 MATCH_MINIMUM(accumGreenBits); 951 MATCH_MINIMUM(accumBlueBits); 952 MATCH_MINIMUM(accumAlphaBits); 953 MATCH_MINIMUM(sampleBuffers); 954 MATCH_MINIMUM(maxPbufferWidth); 955 MATCH_MINIMUM(maxPbufferHeight); 956 MATCH_MINIMUM(maxPbufferPixels); 957 MATCH_MINIMUM(samples); 958 959 MATCH_DONT_CARE(stereoMode); 960 MATCH_EXACT(level); 961 962 MATCH_MASK(drawableType); 963 MATCH_MASK(renderType); 964 965 /* There is a bug in a few of the XFree86 DDX drivers. They contain 966 * visuals with a "transparent type" of 0 when they really mean GLX_NONE. 967 * Technically speaking, it is a bug in the DDX driver, but there is 968 * enough of an installed base to work around the problem here. In any 969 * case, 0 is not a valid value of the transparent type, so we'll treat 0 970 * from the app as GLX_DONT_CARE. We'll consider GLX_NONE from the app and 971 * 0 from the server to be a match to maintain backward compatibility with 972 * the (broken) drivers. 973 */ 974 975 if (a->transparentPixel != (int) GLX_DONT_CARE && a->transparentPixel != 0) { 976 if (a->transparentPixel == GLX_NONE) { 977 if (b->transparentPixel != GLX_NONE && b->transparentPixel != 0) 978 return False; 979 } 980 else { 981 MATCH_EXACT(transparentPixel); 982 } 983 984 switch (a->transparentPixel) { 985 case GLX_TRANSPARENT_RGB: 986 MATCH_DONT_CARE(transparentRed); 987 MATCH_DONT_CARE(transparentGreen); 988 MATCH_DONT_CARE(transparentBlue); 989 MATCH_DONT_CARE(transparentAlpha); 990 break; 991 992 case GLX_TRANSPARENT_INDEX: 993 MATCH_DONT_CARE(transparentIndex); 994 break; 995 996 default: 997 break; 998 } 999 } 1000 1001 return True; 1002} 1003 1004 1005/* There's some trickly language in the GLX spec about how this is supposed 1006 * to work. Basically, if a given component size is either not specified 1007 * or the requested size is zero, it is supposed to act like PERFER_SMALLER. 1008 * Well, that's really hard to do with the code as-is. This behavior is 1009 * closer to correct, but still not technically right. 1010 */ 1011#define PREFER_LARGER_OR_ZERO(comp) \ 1012 do { \ 1013 if ( ((*a)-> comp) != ((*b)-> comp) ) { \ 1014 if ( ((*a)-> comp) == 0 ) { \ 1015 return -1; \ 1016 } \ 1017 else if ( ((*b)-> comp) == 0 ) { \ 1018 return 1; \ 1019 } \ 1020 else { \ 1021 return ((*b)-> comp) - ((*a)-> comp) ; \ 1022 } \ 1023 } \ 1024 } while( 0 ) 1025 1026#define PREFER_LARGER(comp) \ 1027 do { \ 1028 if ( ((*a)-> comp) != ((*b)-> comp) ) { \ 1029 return ((*b)-> comp) - ((*a)-> comp) ; \ 1030 } \ 1031 } while( 0 ) 1032 1033#define PREFER_SMALLER(comp) \ 1034 do { \ 1035 if ( ((*a)-> comp) != ((*b)-> comp) ) { \ 1036 return ((*a)-> comp) - ((*b)-> comp) ; \ 1037 } \ 1038 } while( 0 ) 1039 1040/** 1041 * Compare two GLXFBConfigs. This function is intended to be used as the 1042 * compare function passed in to qsort. 1043 * 1044 * \returns If \c a is a "better" config, according to the specification of 1045 * SGIX_fbconfig, a number less than zero is returned. If \c b is 1046 * better, then a number greater than zero is return. If both are 1047 * equal, zero is returned. 1048 * \sa qsort, glXChooseVisual, glXChooseFBConfig, glXChooseFBConfigSGIX 1049 */ 1050static int 1051fbconfig_compare(struct glx_config **a, struct glx_config **b) 1052{ 1053 /* The order of these comparisons must NOT change. It is defined by 1054 * the GLX 1.3 spec and ARB_multisample. 1055 */ 1056 1057 PREFER_SMALLER(visualSelectGroup); 1058 1059 /* The sort order for the visualRating is GLX_NONE, GLX_SLOW, and 1060 * GLX_NON_CONFORMANT_CONFIG. It just so happens that this is the 1061 * numerical sort order of the enums (0x8000, 0x8001, and 0x800D). 1062 */ 1063 PREFER_SMALLER(visualRating); 1064 1065 /* This isn't quite right. It is supposed to compare the sum of the 1066 * components the user specifically set minimums for. 1067 */ 1068 PREFER_LARGER_OR_ZERO(redBits); 1069 PREFER_LARGER_OR_ZERO(greenBits); 1070 PREFER_LARGER_OR_ZERO(blueBits); 1071 PREFER_LARGER_OR_ZERO(alphaBits); 1072 1073 PREFER_SMALLER(rgbBits); 1074 1075 if (((*a)->doubleBufferMode != (*b)->doubleBufferMode)) { 1076 /* Prefer single-buffer. 1077 */ 1078 return (!(*a)->doubleBufferMode) ? -1 : 1; 1079 } 1080 1081 PREFER_SMALLER(numAuxBuffers); 1082 1083 PREFER_LARGER_OR_ZERO(depthBits); 1084 PREFER_SMALLER(stencilBits); 1085 1086 /* This isn't quite right. It is supposed to compare the sum of the 1087 * components the user specifically set minimums for. 1088 */ 1089 PREFER_LARGER_OR_ZERO(accumRedBits); 1090 PREFER_LARGER_OR_ZERO(accumGreenBits); 1091 PREFER_LARGER_OR_ZERO(accumBlueBits); 1092 PREFER_LARGER_OR_ZERO(accumAlphaBits); 1093 1094 PREFER_SMALLER(visualType); 1095 1096 /* None of the multisample specs say where this comparison should happen, 1097 * so I put it near the end. 1098 */ 1099 PREFER_SMALLER(sampleBuffers); 1100 PREFER_SMALLER(samples); 1101 1102 /* None of the pbuffer or fbconfig specs say that this comparison needs 1103 * to happen at all, but it seems like it should. 1104 */ 1105 PREFER_LARGER(maxPbufferWidth); 1106 PREFER_LARGER(maxPbufferHeight); 1107 PREFER_LARGER(maxPbufferPixels); 1108 1109 return 0; 1110} 1111 1112 1113/** 1114 * Selects and sorts a subset of the supplied configs based on the attributes. 1115 * This function forms to basis of \c glXChooseVisual, \c glXChooseFBConfig, 1116 * and \c glXChooseFBConfigSGIX. 1117 * 1118 * \param configs Array of pointers to possible configs. The elements of 1119 * this array that do not meet the criteria will be set to 1120 * NULL. The remaining elements will be sorted according to 1121 * the various visual / FBConfig selection rules. 1122 * \param num_configs Number of elements in the \c configs array. 1123 * \param attribList Attributes used select from \c configs. This array is 1124 * terminated by a \c None tag. The array can either take 1125 * the form expected by \c glXChooseVisual (where boolean 1126 * tags do not have a value) or by \c glXChooseFBConfig 1127 * (where every tag has a value). 1128 * \param fbconfig_style_tags Selects whether \c attribList is in 1129 * \c glXChooseVisual style or 1130 * \c glXChooseFBConfig style. 1131 * \returns The number of valid elements left in \c configs. 1132 * 1133 * \sa glXChooseVisual, glXChooseFBConfig, glXChooseFBConfigSGIX 1134 */ 1135static int 1136choose_visual(struct glx_config ** configs, int num_configs, 1137 const int *attribList, GLboolean fbconfig_style_tags) 1138{ 1139 struct glx_config test_config; 1140 int base; 1141 int i; 1142 1143 /* This is a fairly direct implementation of the selection method 1144 * described by GLX_SGIX_fbconfig. Start by culling out all the 1145 * configs that are not compatible with the selected parameter 1146 * list. 1147 */ 1148 1149 init_fbconfig_for_chooser(&test_config, fbconfig_style_tags); 1150 __glXInitializeVisualConfigFromTags(&test_config, 512, 1151 (const INT32 *) attribList, 1152 GL_TRUE, fbconfig_style_tags); 1153 1154 base = 0; 1155 for (i = 0; i < num_configs; i++) { 1156 if (fbconfigs_compatible(&test_config, configs[i])) { 1157 configs[base] = configs[i]; 1158 base++; 1159 } 1160 } 1161 1162 if (base == 0) { 1163 return 0; 1164 } 1165 1166 if (base < num_configs) { 1167 (void) memset(&configs[base], 0, sizeof(void *) * (num_configs - base)); 1168 } 1169 1170 /* After the incompatible configs are removed, the resulting 1171 * list is sorted according to the rules set out in the various 1172 * specifications. 1173 */ 1174 1175 qsort(configs, base, sizeof(struct glx_config *), 1176 (int (*)(const void *, const void *)) fbconfig_compare); 1177 return base; 1178} 1179 1180 1181 1182 1183/* 1184** Return the visual that best matches the template. Return None if no 1185** visual matches the template. 1186*/ 1187_X_EXPORT XVisualInfo * 1188glXChooseVisual(Display * dpy, int screen, int *attribList) 1189{ 1190 XVisualInfo *visualList = NULL; 1191 struct glx_display *priv; 1192 struct glx_screen *psc; 1193 struct glx_config test_config; 1194 struct glx_config *config; 1195 struct glx_config *best_config = NULL; 1196 1197 /* 1198 ** Get a list of all visuals, return if list is empty 1199 */ 1200 if (GetGLXPrivScreenConfig(dpy, screen, &priv, &psc) != Success) { 1201 return None; 1202 } 1203 1204 1205 /* 1206 ** Build a template from the defaults and the attribute list 1207 ** Free visual list and return if an unexpected token is encountered 1208 */ 1209 init_fbconfig_for_chooser(&test_config, GL_FALSE); 1210 __glXInitializeVisualConfigFromTags(&test_config, 512, 1211 (const INT32 *) attribList, 1212 GL_TRUE, GL_FALSE); 1213 1214 /* 1215 ** Eliminate visuals that don't meet minimum requirements 1216 ** Compute a score for those that do 1217 ** Remember which visual, if any, got the highest score 1218 ** If no visual is acceptable, return None 1219 ** Otherwise, create an XVisualInfo list with just the selected X visual 1220 ** and return this. 1221 */ 1222 for (config = psc->visuals; config != NULL; config = config->next) { 1223 if (fbconfigs_compatible(&test_config, config) 1224 && ((best_config == NULL) || 1225 (fbconfig_compare (&config, &best_config) < 0))) { 1226 XVisualInfo visualTemplate; 1227 XVisualInfo *newList; 1228 int i; 1229 1230 visualTemplate.screen = screen; 1231 visualTemplate.visualid = config->visualID; 1232 newList = XGetVisualInfo(dpy, VisualScreenMask | VisualIDMask, 1233 &visualTemplate, &i); 1234 1235 if (newList) { 1236 Xfree(visualList); 1237 visualList = newList; 1238 best_config = config; 1239 } 1240 } 1241 } 1242 1243#ifdef GLX_USE_APPLEGL 1244 if(visualList && getenv("LIBGL_DUMP_VISUALID")) { 1245 printf("visualid 0x%lx\n", visualList[0].visualid); 1246 } 1247#endif 1248 1249 return visualList; 1250} 1251 1252 1253_X_EXPORT const char * 1254glXQueryExtensionsString(Display * dpy, int screen) 1255{ 1256 struct glx_screen *psc; 1257 struct glx_display *priv; 1258 1259 if (GetGLXPrivScreenConfig(dpy, screen, &priv, &psc) != Success) { 1260 return NULL; 1261 } 1262 1263 if (!psc->effectiveGLXexts) { 1264 if (!psc->serverGLXexts) { 1265 psc->serverGLXexts = 1266 __glXQueryServerString(dpy, priv->majorOpcode, screen, 1267 GLX_EXTENSIONS); 1268 } 1269 1270 __glXCalculateUsableExtensions(psc, 1271#if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL) 1272 (psc->driScreen != NULL), 1273#else 1274 GL_FALSE, 1275#endif 1276 priv->minorVersion); 1277 } 1278 1279 return psc->effectiveGLXexts; 1280} 1281 1282_X_EXPORT const char * 1283glXGetClientString(Display * dpy, int name) 1284{ 1285 (void) dpy; 1286 1287 switch (name) { 1288 case GLX_VENDOR: 1289 return (__glXGLXClientVendorName); 1290 case GLX_VERSION: 1291 return (__glXGLXClientVersion); 1292 case GLX_EXTENSIONS: 1293 return (__glXGetClientExtensions()); 1294 default: 1295 return NULL; 1296 } 1297} 1298 1299_X_EXPORT const char * 1300glXQueryServerString(Display * dpy, int screen, int name) 1301{ 1302 struct glx_screen *psc; 1303 struct glx_display *priv; 1304 const char **str; 1305 1306 1307 if (GetGLXPrivScreenConfig(dpy, screen, &priv, &psc) != Success) { 1308 return NULL; 1309 } 1310 1311 switch (name) { 1312 case GLX_VENDOR: 1313 str = &priv->serverGLXvendor; 1314 break; 1315 case GLX_VERSION: 1316 str = &priv->serverGLXversion; 1317 break; 1318 case GLX_EXTENSIONS: 1319 str = &psc->serverGLXexts; 1320 break; 1321 default: 1322 return NULL; 1323 } 1324 1325 if (*str == NULL) { 1326 *str = __glXQueryServerString(dpy, priv->majorOpcode, screen, name); 1327 } 1328 1329 return *str; 1330} 1331 1332void 1333__glXClientInfo(Display * dpy, int opcode) 1334{ 1335 char *ext_str = __glXGetClientGLExtensionString(); 1336 int size = strlen(ext_str) + 1; 1337 1338#ifdef USE_XCB 1339 xcb_connection_t *c = XGetXCBConnection(dpy); 1340 xcb_glx_client_info(c, 1341 GLX_MAJOR_VERSION, GLX_MINOR_VERSION, size, ext_str); 1342#else 1343 xGLXClientInfoReq *req; 1344 1345 /* Send the glXClientInfo request */ 1346 LockDisplay(dpy); 1347 GetReq(GLXClientInfo, req); 1348 req->reqType = opcode; 1349 req->glxCode = X_GLXClientInfo; 1350 req->major = GLX_MAJOR_VERSION; 1351 req->minor = GLX_MINOR_VERSION; 1352 1353 req->length += (size + 3) >> 2; 1354 req->numbytes = size; 1355 Data(dpy, ext_str, size); 1356 1357 UnlockDisplay(dpy); 1358 SyncHandle(); 1359#endif /* USE_XCB */ 1360 1361 Xfree(ext_str); 1362} 1363 1364 1365/* 1366** EXT_import_context 1367*/ 1368 1369_X_EXPORT Display * 1370glXGetCurrentDisplay(void) 1371{ 1372 struct glx_context *gc = __glXGetCurrentContext(); 1373 if (NULL == gc) 1374 return NULL; 1375 return gc->currentDpy; 1376} 1377 1378_X_EXPORT 1379GLX_ALIAS(Display *, glXGetCurrentDisplayEXT, (void), (), 1380 glXGetCurrentDisplay) 1381 1382#ifndef GLX_USE_APPLEGL 1383_X_EXPORT GLXContext 1384glXImportContextEXT(Display *dpy, GLXContextID contextID) 1385{ 1386 struct glx_display *priv = __glXInitialize(dpy); 1387 struct glx_screen *psc; 1388 xGLXQueryContextReply reply; 1389 CARD8 opcode; 1390 struct glx_context *ctx; 1391 int propList[__GLX_MAX_CONTEXT_PROPS * 2], *pProp, nPropListBytes; 1392 int i, renderType; 1393 XID share; 1394 struct glx_config *mode; 1395 1396 if (contextID == None || __glXIsDirect(dpy, contextID)) 1397 return NULL; 1398 1399 opcode = __glXSetupForCommand(dpy); 1400 if (!opcode) 1401 return 0; 1402 1403 /* Send the glXQueryContextInfoEXT request */ 1404 LockDisplay(dpy); 1405 1406 if (priv->majorVersion > 1 || priv->minorVersion >= 3) { 1407 xGLXQueryContextReq *req; 1408 1409 GetReq(GLXQueryContext, req); 1410 1411 req->reqType = opcode; 1412 req->glxCode = X_GLXQueryContext; 1413 req->context = contextID; 1414 } 1415 else { 1416 xGLXVendorPrivateReq *vpreq; 1417 xGLXQueryContextInfoEXTReq *req; 1418 1419 GetReqExtra(GLXVendorPrivate, 1420 sz_xGLXQueryContextInfoEXTReq - sz_xGLXVendorPrivateReq, 1421 vpreq); 1422 req = (xGLXQueryContextInfoEXTReq *) vpreq; 1423 req->reqType = opcode; 1424 req->glxCode = X_GLXVendorPrivateWithReply; 1425 req->vendorCode = X_GLXvop_QueryContextInfoEXT; 1426 req->context = contextID; 1427 } 1428 1429 _XReply(dpy, (xReply *) & reply, 0, False); 1430 1431 if (reply.n <= __GLX_MAX_CONTEXT_PROPS) 1432 nPropListBytes = reply.n * 2 * sizeof propList[0]; 1433 else 1434 nPropListBytes = 0; 1435 _XRead(dpy, (char *) propList, nPropListBytes); 1436 UnlockDisplay(dpy); 1437 SyncHandle(); 1438 1439 /* Look up screen first so we can look up visuals/fbconfigs later */ 1440 psc = NULL; 1441 for (i = 0, pProp = propList; i < reply.n; i++, pProp += 2) 1442 if (pProp[0] == GLX_SCREEN) 1443 psc = GetGLXScreenConfigs(dpy, pProp[1]); 1444 if (psc == NULL) 1445 return NULL; 1446 1447 share = None; 1448 mode = NULL; 1449 renderType = 0; 1450 pProp = propList; 1451 1452 for (i = 0, pProp = propList; i < reply.n; i++, pProp += 2) 1453 switch (pProp[0]) { 1454 case GLX_SHARE_CONTEXT_EXT: 1455 share = pProp[1]; 1456 break; 1457 case GLX_VISUAL_ID_EXT: 1458 mode = glx_config_find_visual(psc->visuals, pProp[1]); 1459 break; 1460 case GLX_FBCONFIG_ID: 1461 mode = glx_config_find_fbconfig(psc->configs, pProp[1]); 1462 break; 1463 case GLX_RENDER_TYPE: 1464 renderType = pProp[1]; 1465 break; 1466 } 1467 1468 if (mode == NULL) 1469 return NULL; 1470 1471 ctx = indirect_create_context(psc, mode, NULL, renderType); 1472 if (ctx == NULL) 1473 return NULL; 1474 1475 ctx->xid = contextID; 1476 ctx->imported = GL_TRUE; 1477 ctx->share_xid = share; 1478 1479 return (GLXContext) ctx; 1480} 1481 1482#endif 1483 1484_X_EXPORT int 1485glXQueryContext(Display * dpy, GLXContext ctx_user, int attribute, int *value) 1486{ 1487 struct glx_context *ctx = (struct glx_context *) ctx_user; 1488 1489 switch (attribute) { 1490 case GLX_SHARE_CONTEXT_EXT: 1491 *value = ctx->share_xid; 1492 break; 1493 case GLX_VISUAL_ID_EXT: 1494 *value = ctx->config ? ctx->config->visualID : None; 1495 break; 1496 case GLX_SCREEN: 1497 *value = ctx->screen; 1498 break; 1499 case GLX_FBCONFIG_ID: 1500 *value = ctx->config ? ctx->config->fbconfigID : None; 1501 break; 1502 case GLX_RENDER_TYPE: 1503 *value = ctx->renderType; 1504 break; 1505 default: 1506 return GLX_BAD_ATTRIBUTE; 1507 } 1508 return Success; 1509} 1510 1511_X_EXPORT 1512GLX_ALIAS(int, glXQueryContextInfoEXT, 1513 (Display * dpy, GLXContext ctx, int attribute, int *value), 1514 (dpy, ctx, attribute, value), glXQueryContext) 1515 1516_X_EXPORT GLXContextID glXGetContextIDEXT(const GLXContext ctx_user) 1517{ 1518 struct glx_context *ctx = (struct glx_context *) ctx_user; 1519 1520 return ctx->xid; 1521} 1522 1523_X_EXPORT void 1524glXFreeContextEXT(Display * dpy, GLXContext ctx) 1525{ 1526 DestroyContext(dpy, ctx); 1527} 1528 1529 1530_X_EXPORT GLXFBConfig * 1531glXChooseFBConfig(Display * dpy, int screen, 1532 const int *attribList, int *nitems) 1533{ 1534 struct glx_config **config_list; 1535 int list_size; 1536 1537 1538 config_list = (struct glx_config **) 1539 glXGetFBConfigs(dpy, screen, &list_size); 1540 1541 if ((config_list != NULL) && (list_size > 0) && (attribList != NULL)) { 1542 list_size = choose_visual(config_list, list_size, attribList, GL_TRUE); 1543 if (list_size == 0) { 1544 XFree(config_list); 1545 config_list = NULL; 1546 } 1547 } 1548 1549 *nitems = list_size; 1550 return (GLXFBConfig *) config_list; 1551} 1552 1553 1554_X_EXPORT GLXContext 1555glXCreateNewContext(Display * dpy, GLXFBConfig fbconfig, 1556 int renderType, GLXContext shareList, Bool allowDirect) 1557{ 1558 struct glx_config *config = (struct glx_config *) fbconfig; 1559 1560 return CreateContext(dpy, config->fbconfigID, config, shareList, 1561 allowDirect, X_GLXCreateNewContext, renderType, 1562 config->screen); 1563} 1564 1565 1566_X_EXPORT GLXDrawable 1567glXGetCurrentReadDrawable(void) 1568{ 1569 struct glx_context *gc = __glXGetCurrentContext(); 1570 1571 return gc->currentReadable; 1572} 1573 1574 1575_X_EXPORT GLXFBConfig * 1576glXGetFBConfigs(Display * dpy, int screen, int *nelements) 1577{ 1578 struct glx_display *priv = __glXInitialize(dpy); 1579 struct glx_config **config_list = NULL; 1580 struct glx_config *config; 1581 unsigned num_configs = 0; 1582 int i; 1583 1584 *nelements = 0; 1585 if (priv && (priv->screens != NULL) 1586 && (screen >= 0) && (screen <= ScreenCount(dpy)) 1587 && (priv->screens[screen]->configs != NULL) 1588 && (priv->screens[screen]->configs->fbconfigID 1589 != (int) GLX_DONT_CARE)) { 1590 1591 for (config = priv->screens[screen]->configs; config != NULL; 1592 config = config->next) { 1593 if (config->fbconfigID != (int) GLX_DONT_CARE) { 1594 num_configs++; 1595 } 1596 } 1597 1598 config_list = Xmalloc(num_configs * sizeof *config_list); 1599 if (config_list != NULL) { 1600 *nelements = num_configs; 1601 i = 0; 1602 for (config = priv->screens[screen]->configs; config != NULL; 1603 config = config->next) { 1604 if (config->fbconfigID != (int) GLX_DONT_CARE) { 1605 config_list[i] = config; 1606 i++; 1607 } 1608 } 1609 } 1610 } 1611 1612 return (GLXFBConfig *) config_list; 1613} 1614 1615 1616_X_EXPORT int 1617glXGetFBConfigAttrib(Display * dpy, GLXFBConfig fbconfig, 1618 int attribute, int *value) 1619{ 1620 struct glx_config *config = ValidateGLXFBConfig(dpy, fbconfig); 1621 1622 if (config == NULL) 1623 return GLXBadFBConfig; 1624 1625 return glx_config_get(config, attribute, value); 1626} 1627 1628 1629_X_EXPORT XVisualInfo * 1630glXGetVisualFromFBConfig(Display * dpy, GLXFBConfig fbconfig) 1631{ 1632 XVisualInfo visualTemplate; 1633 struct glx_config *config = (struct glx_config *) fbconfig; 1634 int count; 1635 1636 /* 1637 ** Get a list of all visuals, return if list is empty 1638 */ 1639 visualTemplate.visualid = config->visualID; 1640 return XGetVisualInfo(dpy, VisualIDMask, &visualTemplate, &count); 1641} 1642 1643#ifndef GLX_USE_APPLEGL 1644/* 1645** GLX_SGI_swap_control 1646*/ 1647static int 1648__glXSwapIntervalSGI(int interval) 1649{ 1650 xGLXVendorPrivateReq *req; 1651 struct glx_context *gc = __glXGetCurrentContext(); 1652 struct glx_screen *psc; 1653 Display *dpy; 1654 CARD32 *interval_ptr; 1655 CARD8 opcode; 1656 1657 if (gc == NULL) { 1658 return GLX_BAD_CONTEXT; 1659 } 1660 1661 if (interval <= 0) { 1662 return GLX_BAD_VALUE; 1663 } 1664 1665 psc = GetGLXScreenConfigs( gc->currentDpy, gc->screen); 1666 1667#ifdef GLX_DIRECT_RENDERING 1668 if (gc->isDirect && psc->driScreen && psc->driScreen->setSwapInterval) { 1669 __GLXDRIdrawable *pdraw = 1670 GetGLXDRIDrawable(gc->currentDpy, gc->currentDrawable); 1671 psc->driScreen->setSwapInterval(pdraw, interval); 1672 return 0; 1673 } 1674#endif 1675 1676 dpy = gc->currentDpy; 1677 opcode = __glXSetupForCommand(dpy); 1678 if (!opcode) { 1679 return 0; 1680 } 1681 1682 /* Send the glXSwapIntervalSGI request */ 1683 LockDisplay(dpy); 1684 GetReqExtra(GLXVendorPrivate, sizeof(CARD32), req); 1685 req->reqType = opcode; 1686 req->glxCode = X_GLXVendorPrivate; 1687 req->vendorCode = X_GLXvop_SwapIntervalSGI; 1688 req->contextTag = gc->currentContextTag; 1689 1690 interval_ptr = (CARD32 *) (req + 1); 1691 *interval_ptr = interval; 1692 1693 UnlockDisplay(dpy); 1694 SyncHandle(); 1695 XFlush(dpy); 1696 1697 return 0; 1698} 1699 1700 1701/* 1702** GLX_MESA_swap_control 1703*/ 1704static int 1705__glXSwapIntervalMESA(unsigned int interval) 1706{ 1707#ifdef GLX_DIRECT_RENDERING 1708 struct glx_context *gc = __glXGetCurrentContext(); 1709 1710 if (gc != NULL && gc->isDirect) { 1711 struct glx_screen *psc; 1712 1713 psc = GetGLXScreenConfigs( gc->currentDpy, gc->screen); 1714 if (psc->driScreen && psc->driScreen->setSwapInterval) { 1715 __GLXDRIdrawable *pdraw = 1716 GetGLXDRIDrawable(gc->currentDpy, gc->currentDrawable); 1717 return psc->driScreen->setSwapInterval(pdraw, interval); 1718 } 1719 } 1720#endif 1721 1722 return GLX_BAD_CONTEXT; 1723} 1724 1725 1726static int 1727__glXGetSwapIntervalMESA(void) 1728{ 1729#ifdef GLX_DIRECT_RENDERING 1730 struct glx_context *gc = __glXGetCurrentContext(); 1731 1732 if (gc != NULL && gc->isDirect) { 1733 struct glx_screen *psc; 1734 1735 psc = GetGLXScreenConfigs( gc->currentDpy, gc->screen); 1736 if (psc->driScreen && psc->driScreen->getSwapInterval) { 1737 __GLXDRIdrawable *pdraw = 1738 GetGLXDRIDrawable(gc->currentDpy, gc->currentDrawable); 1739 return psc->driScreen->getSwapInterval(pdraw); 1740 } 1741 } 1742#endif 1743 1744 return 0; 1745} 1746 1747 1748/* 1749** GLX_SGI_video_sync 1750*/ 1751static int 1752__glXGetVideoSyncSGI(unsigned int *count) 1753{ 1754 int64_t ust, msc, sbc; 1755 int ret; 1756 struct glx_context *gc = __glXGetCurrentContext(); 1757 struct glx_screen *psc; 1758#ifdef GLX_DIRECT_RENDERING 1759 __GLXDRIdrawable *pdraw; 1760#endif 1761 1762 if (!gc) 1763 return GLX_BAD_CONTEXT; 1764 1765#ifdef GLX_DIRECT_RENDERING 1766 if (!gc->isDirect) 1767 return GLX_BAD_CONTEXT; 1768#endif 1769 1770 psc = GetGLXScreenConfigs(gc->currentDpy, gc->screen); 1771#ifdef GLX_DIRECT_RENDERING 1772 pdraw = GetGLXDRIDrawable(gc->currentDpy, gc->currentDrawable); 1773#endif 1774 1775 /* FIXME: Looking at the GLX_SGI_video_sync spec in the extension registry, 1776 * FIXME: there should be a GLX encoding for this call. I can find no 1777 * FIXME: documentation for the GLX encoding. 1778 */ 1779#ifdef GLX_DIRECT_RENDERING 1780 if (psc->driScreen && psc->driScreen->getDrawableMSC) { 1781 ret = psc->driScreen->getDrawableMSC(psc, pdraw, &ust, &msc, &sbc); 1782 *count = (unsigned) msc; 1783 return (ret == True) ? 0 : GLX_BAD_CONTEXT; 1784 } 1785#endif 1786 1787 return GLX_BAD_CONTEXT; 1788} 1789 1790static int 1791__glXWaitVideoSyncSGI(int divisor, int remainder, unsigned int *count) 1792{ 1793 struct glx_context *gc = __glXGetCurrentContext(); 1794 struct glx_screen *psc; 1795#ifdef GLX_DIRECT_RENDERING 1796 __GLXDRIdrawable *pdraw; 1797#endif 1798 int64_t ust, msc, sbc; 1799 int ret; 1800 1801 if (divisor <= 0 || remainder < 0) 1802 return GLX_BAD_VALUE; 1803 1804 if (!gc) 1805 return GLX_BAD_CONTEXT; 1806 1807#ifdef GLX_DIRECT_RENDERING 1808 if (!gc->isDirect) 1809 return GLX_BAD_CONTEXT; 1810#endif 1811 1812 psc = GetGLXScreenConfigs( gc->currentDpy, gc->screen); 1813#ifdef GLX_DIRECT_RENDERING 1814 pdraw = GetGLXDRIDrawable(gc->currentDpy, gc->currentDrawable); 1815#endif 1816 1817#ifdef GLX_DIRECT_RENDERING 1818 if (psc->driScreen && psc->driScreen->waitForMSC) { 1819 ret = psc->driScreen->waitForMSC(pdraw, 0, divisor, remainder, &ust, &msc, 1820 &sbc); 1821 *count = (unsigned) msc; 1822 return (ret == True) ? 0 : GLX_BAD_CONTEXT; 1823 } 1824#endif 1825 1826 return GLX_BAD_CONTEXT; 1827} 1828 1829#endif /* GLX_USE_APPLEGL */ 1830 1831/* 1832** GLX_SGIX_fbconfig 1833** Many of these functions are aliased to GLX 1.3 entry points in the 1834** GLX_functions table. 1835*/ 1836 1837_X_EXPORT 1838GLX_ALIAS(int, glXGetFBConfigAttribSGIX, 1839 (Display * dpy, GLXFBConfigSGIX config, int attribute, int *value), 1840 (dpy, config, attribute, value), glXGetFBConfigAttrib) 1841 1842_X_EXPORT GLX_ALIAS(GLXFBConfigSGIX *, glXChooseFBConfigSGIX, 1843 (Display * dpy, int screen, int *attrib_list, 1844 int *nelements), (dpy, screen, attrib_list, nelements), 1845 glXChooseFBConfig) 1846 1847_X_EXPORT GLX_ALIAS(XVisualInfo *, glXGetVisualFromFBConfigSGIX, 1848 (Display * dpy, GLXFBConfigSGIX config), 1849 (dpy, config), glXGetVisualFromFBConfig) 1850 1851_X_EXPORT GLXPixmap 1852glXCreateGLXPixmapWithConfigSGIX(Display * dpy, 1853 GLXFBConfigSGIX fbconfig, 1854 Pixmap pixmap) 1855{ 1856#ifndef GLX_USE_APPLEGL 1857 xGLXVendorPrivateWithReplyReq *vpreq; 1858 xGLXCreateGLXPixmapWithConfigSGIXReq *req; 1859 GLXPixmap xid = None; 1860 CARD8 opcode; 1861 struct glx_screen *psc; 1862#endif 1863 struct glx_config *config = (struct glx_config *) fbconfig; 1864 1865 1866 if ((dpy == NULL) || (config == NULL)) { 1867 return None; 1868 } 1869#ifdef GLX_USE_APPLEGL 1870 if(apple_glx_pixmap_create(dpy, config->screen, pixmap, config)) 1871 return None; 1872 return pixmap; 1873#else 1874 1875 psc = GetGLXScreenConfigs(dpy, config->screen); 1876 if ((psc != NULL) 1877 && __glXExtensionBitIsEnabled(psc, SGIX_fbconfig_bit)) { 1878 opcode = __glXSetupForCommand(dpy); 1879 if (!opcode) { 1880 return None; 1881 } 1882 1883 /* Send the glXCreateGLXPixmapWithConfigSGIX request */ 1884 LockDisplay(dpy); 1885 GetReqExtra(GLXVendorPrivateWithReply, 1886 sz_xGLXCreateGLXPixmapWithConfigSGIXReq - 1887 sz_xGLXVendorPrivateWithReplyReq, vpreq); 1888 req = (xGLXCreateGLXPixmapWithConfigSGIXReq *) vpreq; 1889 req->reqType = opcode; 1890 req->glxCode = X_GLXVendorPrivateWithReply; 1891 req->vendorCode = X_GLXvop_CreateGLXPixmapWithConfigSGIX; 1892 req->screen = config->screen; 1893 req->fbconfig = config->fbconfigID; 1894 req->pixmap = pixmap; 1895 req->glxpixmap = xid = XAllocID(dpy); 1896 UnlockDisplay(dpy); 1897 SyncHandle(); 1898 } 1899 1900 return xid; 1901#endif 1902} 1903 1904_X_EXPORT GLXContext 1905glXCreateContextWithConfigSGIX(Display * dpy, 1906 GLXFBConfigSGIX fbconfig, int renderType, 1907 GLXContext shareList, Bool allowDirect) 1908{ 1909 GLXContext gc = NULL; 1910 struct glx_config *config = (struct glx_config *) fbconfig; 1911 struct glx_screen *psc; 1912 1913 1914 if ((dpy == NULL) || (config == NULL)) { 1915 return None; 1916 } 1917 1918 psc = GetGLXScreenConfigs(dpy, config->screen); 1919 if ((psc != NULL) 1920 && __glXExtensionBitIsEnabled(psc, SGIX_fbconfig_bit)) { 1921 gc = CreateContext(dpy, config->fbconfigID, config, shareList, 1922 allowDirect, 1923 X_GLXvop_CreateContextWithConfigSGIX, renderType, 1924 config->screen); 1925 } 1926 1927 return gc; 1928} 1929 1930 1931_X_EXPORT GLXFBConfigSGIX 1932glXGetFBConfigFromVisualSGIX(Display * dpy, XVisualInfo * vis) 1933{ 1934 struct glx_display *priv; 1935 struct glx_screen *psc = NULL; 1936 1937 if ((GetGLXPrivScreenConfig(dpy, vis->screen, &priv, &psc) != Success) 1938 && __glXExtensionBitIsEnabled(psc, SGIX_fbconfig_bit) 1939 && (psc->configs->fbconfigID != (int) GLX_DONT_CARE)) { 1940 return (GLXFBConfigSGIX) glx_config_find_visual(psc->configs, 1941 vis->visualid); 1942 } 1943 1944 return NULL; 1945} 1946 1947#ifndef GLX_USE_APPLEGL 1948/* 1949** GLX_SGIX_swap_group 1950*/ 1951static void 1952__glXJoinSwapGroupSGIX(Display * dpy, GLXDrawable drawable, 1953 GLXDrawable member) 1954{ 1955 (void) dpy; 1956 (void) drawable; 1957 (void) member; 1958} 1959 1960 1961/* 1962** GLX_SGIX_swap_barrier 1963*/ 1964static void 1965__glXBindSwapBarrierSGIX(Display * dpy, GLXDrawable drawable, int barrier) 1966{ 1967 (void) dpy; 1968 (void) drawable; 1969 (void) barrier; 1970} 1971 1972static Bool 1973__glXQueryMaxSwapBarriersSGIX(Display * dpy, int screen, int *max) 1974{ 1975 (void) dpy; 1976 (void) screen; 1977 (void) max; 1978 return False; 1979} 1980 1981 1982/* 1983** GLX_OML_sync_control 1984*/ 1985static Bool 1986__glXGetSyncValuesOML(Display * dpy, GLXDrawable drawable, 1987 int64_t * ust, int64_t * msc, int64_t * sbc) 1988{ 1989 struct glx_display * const priv = __glXInitialize(dpy); 1990 int ret; 1991#ifdef GLX_DIRECT_RENDERING 1992 __GLXDRIdrawable *pdraw; 1993#endif 1994 struct glx_screen *psc; 1995 1996 if (!priv) 1997 return False; 1998 1999#ifdef GLX_DIRECT_RENDERING 2000 pdraw = GetGLXDRIDrawable(dpy, drawable); 2001 psc = pdraw ? pdraw->psc : NULL; 2002 if (pdraw && psc->driScreen->getDrawableMSC) { 2003 ret = psc->driScreen->getDrawableMSC(psc, pdraw, ust, msc, sbc); 2004 return ret; 2005 } 2006#endif 2007 2008 return False; 2009} 2010 2011#if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL) 2012_X_HIDDEN GLboolean 2013__glxGetMscRate(__GLXDRIdrawable *glxDraw, 2014 int32_t * numerator, int32_t * denominator) 2015{ 2016#ifdef XF86VIDMODE 2017 struct glx_screen *psc; 2018 XF86VidModeModeLine mode_line; 2019 int dot_clock; 2020 int i; 2021 2022 psc = glxDraw->psc; 2023 if (XF86VidModeQueryVersion(psc->dpy, &i, &i) && 2024 XF86VidModeGetModeLine(psc->dpy, psc->scr, &dot_clock, &mode_line)) { 2025 unsigned n = dot_clock * 1000; 2026 unsigned d = mode_line.vtotal * mode_line.htotal; 2027 2028# define V_INTERLACE 0x010 2029# define V_DBLSCAN 0x020 2030 2031 if (mode_line.flags & V_INTERLACE) 2032 n *= 2; 2033 else if (mode_line.flags & V_DBLSCAN) 2034 d *= 2; 2035 2036 /* The OML_sync_control spec requires that if the refresh rate is a 2037 * whole number, that the returned numerator be equal to the refresh 2038 * rate and the denominator be 1. 2039 */ 2040 2041 if (n % d == 0) { 2042 n /= d; 2043 d = 1; 2044 } 2045 else { 2046 static const unsigned f[] = { 13, 11, 7, 5, 3, 2, 0 }; 2047 2048 /* This is a poor man's way to reduce a fraction. It's far from 2049 * perfect, but it will work well enough for this situation. 2050 */ 2051 2052 for (i = 0; f[i] != 0; i++) { 2053 while (n % f[i] == 0 && d % f[i] == 0) { 2054 d /= f[i]; 2055 n /= f[i]; 2056 } 2057 } 2058 } 2059 2060 *numerator = n; 2061 *denominator = d; 2062 2063 return True; 2064 } 2065 else 2066 return False; 2067#else 2068 (void) draw; 2069 (void) numerator; 2070 (void) denominator; 2071 (void) private; 2072 2073 return False; 2074#endif 2075} 2076#endif 2077 2078/** 2079 * Determine the refresh rate of the specified drawable and display. 2080 * 2081 * \param dpy Display whose refresh rate is to be determined. 2082 * \param drawable Drawable whose refresh rate is to be determined. 2083 * \param numerator Numerator of the refresh rate. 2084 * \param demoninator Denominator of the refresh rate. 2085 * \return If the refresh rate for the specified display and drawable could 2086 * be calculated, True is returned. Otherwise False is returned. 2087 * 2088 * \note This function is implemented entirely client-side. A lot of other 2089 * functionality is required to export GLX_OML_sync_control, so on 2090 * XFree86 this function can be called for direct-rendering contexts 2091 * when GLX_OML_sync_control appears in the client extension string. 2092 */ 2093 2094_X_HIDDEN GLboolean 2095__glXGetMscRateOML(Display * dpy, GLXDrawable drawable, 2096 int32_t * numerator, int32_t * denominator) 2097{ 2098#if defined( GLX_DIRECT_RENDERING ) && defined( XF86VIDMODE ) 2099 __GLXDRIdrawable *draw = GetGLXDRIDrawable(dpy, drawable); 2100 2101 if (draw == NULL) 2102 return False; 2103 2104 return __glxGetMscRate(draw, numerator, denominator); 2105#else 2106 (void) dpy; 2107 (void) drawable; 2108 (void) numerator; 2109 (void) denominator; 2110#endif 2111 return False; 2112} 2113 2114 2115static int64_t 2116__glXSwapBuffersMscOML(Display * dpy, GLXDrawable drawable, 2117 int64_t target_msc, int64_t divisor, int64_t remainder) 2118{ 2119 struct glx_context *gc = __glXGetCurrentContext(); 2120#ifdef GLX_DIRECT_RENDERING 2121 __GLXDRIdrawable *pdraw = GetGLXDRIDrawable(dpy, drawable); 2122 struct glx_screen *psc = pdraw ? pdraw->psc : NULL; 2123#endif 2124 2125 if (!gc) /* no GLX for this */ 2126 return -1; 2127 2128#ifdef GLX_DIRECT_RENDERING 2129 if (!pdraw || !gc->isDirect) 2130 return -1; 2131#endif 2132 2133 /* The OML_sync_control spec says these should "generate a GLX_BAD_VALUE 2134 * error", but it also says "It [glXSwapBuffersMscOML] will return a value 2135 * of -1 if the function failed because of errors detected in the input 2136 * parameters" 2137 */ 2138 if (divisor < 0 || remainder < 0 || target_msc < 0) 2139 return -1; 2140 if (divisor > 0 && remainder >= divisor) 2141 return -1; 2142 2143 if (target_msc == 0 && divisor == 0 && remainder == 0) 2144 remainder = 1; 2145 2146#ifdef GLX_DIRECT_RENDERING 2147 if (psc->driScreen && psc->driScreen->swapBuffers) 2148 return (*psc->driScreen->swapBuffers)(pdraw, target_msc, divisor, 2149 remainder); 2150#endif 2151 2152 return -1; 2153} 2154 2155 2156static Bool 2157__glXWaitForMscOML(Display * dpy, GLXDrawable drawable, 2158 int64_t target_msc, int64_t divisor, 2159 int64_t remainder, int64_t * ust, 2160 int64_t * msc, int64_t * sbc) 2161{ 2162#ifdef GLX_DIRECT_RENDERING 2163 __GLXDRIdrawable *pdraw = GetGLXDRIDrawable(dpy, drawable); 2164 struct glx_screen *psc = pdraw ? pdraw->psc : NULL; 2165 int ret; 2166#endif 2167 2168 2169 /* The OML_sync_control spec says these should "generate a GLX_BAD_VALUE 2170 * error", but the return type in the spec is Bool. 2171 */ 2172 if (divisor < 0 || remainder < 0 || target_msc < 0) 2173 return False; 2174 if (divisor > 0 && remainder >= divisor) 2175 return False; 2176 2177#ifdef GLX_DIRECT_RENDERING 2178 if (pdraw && psc->driScreen && psc->driScreen->waitForMSC) { 2179 ret = psc->driScreen->waitForMSC(pdraw, target_msc, divisor, remainder, 2180 ust, msc, sbc); 2181 return ret; 2182 } 2183#endif 2184 2185 return False; 2186} 2187 2188 2189static Bool 2190__glXWaitForSbcOML(Display * dpy, GLXDrawable drawable, 2191 int64_t target_sbc, int64_t * ust, 2192 int64_t * msc, int64_t * sbc) 2193{ 2194#ifdef GLX_DIRECT_RENDERING 2195 __GLXDRIdrawable *pdraw = GetGLXDRIDrawable(dpy, drawable); 2196 struct glx_screen *psc = pdraw ? pdraw->psc : NULL; 2197 int ret; 2198#endif 2199 2200 /* The OML_sync_control spec says this should "generate a GLX_BAD_VALUE 2201 * error", but the return type in the spec is Bool. 2202 */ 2203 if (target_sbc < 0) 2204 return False; 2205 2206#ifdef GLX_DIRECT_RENDERING 2207 if (pdraw && psc->driScreen && psc->driScreen->waitForSBC) { 2208 ret = psc->driScreen->waitForSBC(pdraw, target_sbc, ust, msc, sbc); 2209 return ret; 2210 } 2211#endif 2212 2213 return False; 2214} 2215 2216/*@}*/ 2217 2218 2219/** 2220 * Mesa extension stubs. These will help reduce portability problems. 2221 */ 2222/*@{*/ 2223 2224/** 2225 * Release all buffers associated with the specified GLX drawable. 2226 * 2227 * \todo 2228 * This function was intended for stand-alone Mesa. The issue there is that 2229 * the library doesn't get any notification when a window is closed. In 2230 * DRI there is a similar but slightly different issue. When GLX 1.3 is 2231 * supported, there are 3 different functions to destroy a drawable. It 2232 * should be possible to create GLX protocol (or have it determine which 2233 * protocol to use based on the type of the drawable) to have one function 2234 * do the work of 3. For the direct-rendering case, this function could 2235 * just call the driver's \c __DRIdrawableRec::destroyDrawable function. 2236 * This would reduce the frequency with which \c __driGarbageCollectDrawables 2237 * would need to be used. This really should be done as part of the new DRI 2238 * interface work. 2239 * 2240 * \sa http://oss.sgi.com/projects/ogl-sample/registry/MESA/release_buffers.txt 2241 * __driGarbageCollectDrawables 2242 * glXDestroyGLXPixmap 2243 * glXDestroyPbuffer glXDestroyPixmap glXDestroyWindow 2244 * glXDestroyGLXPbufferSGIX glXDestroyGLXVideoSourceSGIX 2245 */ 2246static Bool 2247__glXReleaseBuffersMESA(Display * dpy, GLXDrawable d) 2248{ 2249 (void) dpy; 2250 (void) d; 2251 return False; 2252} 2253 2254 2255_X_EXPORT GLXPixmap 2256glXCreateGLXPixmapMESA(Display * dpy, XVisualInfo * visual, 2257 Pixmap pixmap, Colormap cmap) 2258{ 2259 (void) dpy; 2260 (void) visual; 2261 (void) pixmap; 2262 (void) cmap; 2263 return 0; 2264} 2265 2266/*@}*/ 2267 2268 2269/** 2270 * GLX_MESA_copy_sub_buffer 2271 */ 2272#define X_GLXvop_CopySubBufferMESA 5154 /* temporary */ 2273static void 2274__glXCopySubBufferMESA(Display * dpy, GLXDrawable drawable, 2275 int x, int y, int width, int height) 2276{ 2277 xGLXVendorPrivateReq *req; 2278 struct glx_context *gc; 2279 GLXContextTag tag; 2280 CARD32 *drawable_ptr; 2281 INT32 *x_ptr, *y_ptr, *w_ptr, *h_ptr; 2282 CARD8 opcode; 2283 2284#if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL) 2285 __GLXDRIdrawable *pdraw = GetGLXDRIDrawable(dpy, drawable); 2286 if (pdraw != NULL) { 2287 struct glx_screen *psc = pdraw->psc; 2288 if (psc->driScreen->copySubBuffer != NULL) { 2289 glFlush(); 2290 (*psc->driScreen->copySubBuffer) (pdraw, x, y, width, height); 2291 } 2292 2293 return; 2294 } 2295#endif 2296 2297 opcode = __glXSetupForCommand(dpy); 2298 if (!opcode) 2299 return; 2300 2301 /* 2302 ** The calling thread may or may not have a current context. If it 2303 ** does, send the context tag so the server can do a flush. 2304 */ 2305 gc = __glXGetCurrentContext(); 2306 if ((gc != NULL) && (dpy == gc->currentDpy) && 2307 ((drawable == gc->currentDrawable) || 2308 (drawable == gc->currentReadable))) { 2309 tag = gc->currentContextTag; 2310 } 2311 else { 2312 tag = 0; 2313 } 2314 2315 LockDisplay(dpy); 2316 GetReqExtra(GLXVendorPrivate, sizeof(CARD32) + sizeof(INT32) * 4, req); 2317 req->reqType = opcode; 2318 req->glxCode = X_GLXVendorPrivate; 2319 req->vendorCode = X_GLXvop_CopySubBufferMESA; 2320 req->contextTag = tag; 2321 2322 drawable_ptr = (CARD32 *) (req + 1); 2323 x_ptr = (INT32 *) (drawable_ptr + 1); 2324 y_ptr = (INT32 *) (drawable_ptr + 2); 2325 w_ptr = (INT32 *) (drawable_ptr + 3); 2326 h_ptr = (INT32 *) (drawable_ptr + 4); 2327 2328 *drawable_ptr = drawable; 2329 *x_ptr = x; 2330 *y_ptr = y; 2331 *w_ptr = width; 2332 *h_ptr = height; 2333 2334 UnlockDisplay(dpy); 2335 SyncHandle(); 2336} 2337 2338/*@{*/ 2339static void 2340__glXBindTexImageEXT(Display * dpy, 2341 GLXDrawable drawable, int buffer, const int *attrib_list) 2342{ 2343 struct glx_context *gc = __glXGetCurrentContext(); 2344 2345 if (gc == NULL || gc->vtable->bind_tex_image == NULL) 2346 return; 2347 2348 gc->vtable->bind_tex_image(dpy, drawable, buffer, attrib_list); 2349} 2350 2351static void 2352__glXReleaseTexImageEXT(Display * dpy, GLXDrawable drawable, int buffer) 2353{ 2354 struct glx_context *gc = __glXGetCurrentContext(); 2355 2356 if (gc == NULL || gc->vtable->release_tex_image == NULL) 2357 return; 2358 2359 gc->vtable->release_tex_image(dpy, drawable, buffer); 2360} 2361 2362/*@}*/ 2363 2364#endif /* GLX_USE_APPLEGL */ 2365 2366/** 2367 * \c strdup is actually not a standard ANSI C or POSIX routine. 2368 * Irix will not define it if ANSI mode is in effect. 2369 * 2370 * \sa strdup 2371 */ 2372_X_HIDDEN char * 2373__glXstrdup(const char *str) 2374{ 2375 char *copy; 2376 copy = (char *) Xmalloc(strlen(str) + 1); 2377 if (!copy) 2378 return NULL; 2379 strcpy(copy, str); 2380 return copy; 2381} 2382 2383/* 2384** glXGetProcAddress support 2385*/ 2386 2387struct name_address_pair 2388{ 2389 const char *Name; 2390 GLvoid *Address; 2391}; 2392 2393#define GLX_FUNCTION(f) { # f, (GLvoid *) f } 2394#define GLX_FUNCTION2(n,f) { # n, (GLvoid *) f } 2395 2396static const struct name_address_pair GLX_functions[] = { 2397 /*** GLX_VERSION_1_0 ***/ 2398 GLX_FUNCTION(glXChooseVisual), 2399 GLX_FUNCTION(glXCopyContext), 2400 GLX_FUNCTION(glXCreateContext), 2401 GLX_FUNCTION(glXCreateGLXPixmap), 2402 GLX_FUNCTION(glXDestroyContext), 2403 GLX_FUNCTION(glXDestroyGLXPixmap), 2404 GLX_FUNCTION(glXGetConfig), 2405 GLX_FUNCTION(glXGetCurrentContext), 2406 GLX_FUNCTION(glXGetCurrentDrawable), 2407 GLX_FUNCTION(glXIsDirect), 2408 GLX_FUNCTION(glXMakeCurrent), 2409 GLX_FUNCTION(glXQueryExtension), 2410 GLX_FUNCTION(glXQueryVersion), 2411 GLX_FUNCTION(glXSwapBuffers), 2412 GLX_FUNCTION(glXUseXFont), 2413 GLX_FUNCTION(glXWaitGL), 2414 GLX_FUNCTION(glXWaitX), 2415 2416 /*** GLX_VERSION_1_1 ***/ 2417 GLX_FUNCTION(glXGetClientString), 2418 GLX_FUNCTION(glXQueryExtensionsString), 2419 GLX_FUNCTION(glXQueryServerString), 2420 2421 /*** GLX_VERSION_1_2 ***/ 2422 GLX_FUNCTION(glXGetCurrentDisplay), 2423 2424 /*** GLX_VERSION_1_3 ***/ 2425 GLX_FUNCTION(glXChooseFBConfig), 2426 GLX_FUNCTION(glXCreateNewContext), 2427 GLX_FUNCTION(glXCreatePbuffer), 2428 GLX_FUNCTION(glXCreatePixmap), 2429 GLX_FUNCTION(glXCreateWindow), 2430 GLX_FUNCTION(glXDestroyPbuffer), 2431 GLX_FUNCTION(glXDestroyPixmap), 2432 GLX_FUNCTION(glXDestroyWindow), 2433 GLX_FUNCTION(glXGetCurrentReadDrawable), 2434 GLX_FUNCTION(glXGetFBConfigAttrib), 2435 GLX_FUNCTION(glXGetFBConfigs), 2436 GLX_FUNCTION(glXGetSelectedEvent), 2437 GLX_FUNCTION(glXGetVisualFromFBConfig), 2438 GLX_FUNCTION(glXMakeContextCurrent), 2439 GLX_FUNCTION(glXQueryContext), 2440 GLX_FUNCTION(glXQueryDrawable), 2441 GLX_FUNCTION(glXSelectEvent), 2442 2443#ifndef GLX_USE_APPLEGL 2444 /*** GLX_SGI_swap_control ***/ 2445 GLX_FUNCTION2(glXSwapIntervalSGI, __glXSwapIntervalSGI), 2446 2447 /*** GLX_SGI_video_sync ***/ 2448 GLX_FUNCTION2(glXGetVideoSyncSGI, __glXGetVideoSyncSGI), 2449 GLX_FUNCTION2(glXWaitVideoSyncSGI, __glXWaitVideoSyncSGI), 2450 2451 /*** GLX_SGI_make_current_read ***/ 2452 GLX_FUNCTION2(glXMakeCurrentReadSGI, glXMakeContextCurrent), 2453 GLX_FUNCTION2(glXGetCurrentReadDrawableSGI, glXGetCurrentReadDrawable), 2454 2455 /*** GLX_EXT_import_context ***/ 2456 GLX_FUNCTION(glXFreeContextEXT), 2457 GLX_FUNCTION(glXGetContextIDEXT), 2458 GLX_FUNCTION2(glXGetCurrentDisplayEXT, glXGetCurrentDisplay), 2459 GLX_FUNCTION(glXImportContextEXT), 2460 GLX_FUNCTION2(glXQueryContextInfoEXT, glXQueryContext), 2461#endif 2462 2463 /*** GLX_SGIX_fbconfig ***/ 2464 GLX_FUNCTION2(glXGetFBConfigAttribSGIX, glXGetFBConfigAttrib), 2465 GLX_FUNCTION2(glXChooseFBConfigSGIX, glXChooseFBConfig), 2466 GLX_FUNCTION(glXCreateGLXPixmapWithConfigSGIX), 2467 GLX_FUNCTION(glXCreateContextWithConfigSGIX), 2468 GLX_FUNCTION2(glXGetVisualFromFBConfigSGIX, glXGetVisualFromFBConfig), 2469 GLX_FUNCTION(glXGetFBConfigFromVisualSGIX), 2470 2471#ifndef GLX_USE_APPLEGL 2472 /*** GLX_SGIX_pbuffer ***/ 2473 GLX_FUNCTION(glXCreateGLXPbufferSGIX), 2474 GLX_FUNCTION(glXDestroyGLXPbufferSGIX), 2475 GLX_FUNCTION(glXQueryGLXPbufferSGIX), 2476 GLX_FUNCTION(glXSelectEventSGIX), 2477 GLX_FUNCTION(glXGetSelectedEventSGIX), 2478 2479 /*** GLX_SGIX_swap_group ***/ 2480 GLX_FUNCTION2(glXJoinSwapGroupSGIX, __glXJoinSwapGroupSGIX), 2481 2482 /*** GLX_SGIX_swap_barrier ***/ 2483 GLX_FUNCTION2(glXBindSwapBarrierSGIX, __glXBindSwapBarrierSGIX), 2484 GLX_FUNCTION2(glXQueryMaxSwapBarriersSGIX, __glXQueryMaxSwapBarriersSGIX), 2485 2486 /*** GLX_MESA_copy_sub_buffer ***/ 2487 GLX_FUNCTION2(glXCopySubBufferMESA, __glXCopySubBufferMESA), 2488 2489 /*** GLX_MESA_pixmap_colormap ***/ 2490 GLX_FUNCTION(glXCreateGLXPixmapMESA), 2491 2492 /*** GLX_MESA_release_buffers ***/ 2493 GLX_FUNCTION2(glXReleaseBuffersMESA, __glXReleaseBuffersMESA), 2494 2495 /*** GLX_MESA_swap_control ***/ 2496 GLX_FUNCTION2(glXSwapIntervalMESA, __glXSwapIntervalMESA), 2497 GLX_FUNCTION2(glXGetSwapIntervalMESA, __glXGetSwapIntervalMESA), 2498#endif 2499 2500 /*** GLX_ARB_get_proc_address ***/ 2501 GLX_FUNCTION(glXGetProcAddressARB), 2502 2503 /*** GLX 1.4 ***/ 2504 GLX_FUNCTION2(glXGetProcAddress, glXGetProcAddressARB), 2505 2506#ifndef GLX_USE_APPLEGL 2507 /*** GLX_OML_sync_control ***/ 2508 GLX_FUNCTION2(glXWaitForSbcOML, __glXWaitForSbcOML), 2509 GLX_FUNCTION2(glXWaitForMscOML, __glXWaitForMscOML), 2510 GLX_FUNCTION2(glXSwapBuffersMscOML, __glXSwapBuffersMscOML), 2511 GLX_FUNCTION2(glXGetMscRateOML, __glXGetMscRateOML), 2512 GLX_FUNCTION2(glXGetSyncValuesOML, __glXGetSyncValuesOML), 2513 2514 /*** GLX_EXT_texture_from_pixmap ***/ 2515 GLX_FUNCTION2(glXBindTexImageEXT, __glXBindTexImageEXT), 2516 GLX_FUNCTION2(glXReleaseTexImageEXT, __glXReleaseTexImageEXT), 2517#endif 2518 2519#if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL) 2520 /*** DRI configuration ***/ 2521 GLX_FUNCTION(glXGetScreenDriver), 2522 GLX_FUNCTION(glXGetDriverConfig), 2523#endif 2524 2525 {NULL, NULL} /* end of list */ 2526}; 2527 2528#ifndef GLX_USE_APPLEGL 2529static const GLvoid * 2530get_glx_proc_address(const char *funcName) 2531{ 2532 GLuint i; 2533 2534 /* try static functions */ 2535 for (i = 0; GLX_functions[i].Name; i++) { 2536 if (strcmp(GLX_functions[i].Name, funcName) == 0) 2537 return GLX_functions[i].Address; 2538 } 2539 2540 return NULL; 2541} 2542#endif 2543 2544/** 2545 * Get the address of a named GL function. This is the pre-GLX 1.4 name for 2546 * \c glXGetProcAddress. 2547 * 2548 * \param procName Name of a GL or GLX function. 2549 * \returns A pointer to the named function 2550 * 2551 * \sa glXGetProcAddress 2552 */ 2553_X_EXPORT void (*glXGetProcAddressARB(const GLubyte * procName)) (void) 2554{ 2555 typedef void (*gl_function) (void); 2556 gl_function f; 2557 2558 2559 /* Search the table of GLX and internal functions first. If that 2560 * fails and the supplied name could be a valid core GL name, try 2561 * searching the core GL function table. This check is done to prevent 2562 * DRI based drivers from searching the core GL function table for 2563 * internal API functions. 2564 */ 2565#ifdef GLX_USE_APPLEGL 2566 f = (gl_function) apple_glx_get_proc_address(procName); 2567#else 2568 f = (gl_function) get_glx_proc_address((const char *) procName); 2569 if ((f == NULL) && (procName[0] == 'g') && (procName[1] == 'l') 2570 && (procName[2] != 'X')) { 2571 f = (gl_function) _glapi_get_proc_address((const char *) procName); 2572 } 2573#endif 2574 return f; 2575} 2576 2577/** 2578 * Get the address of a named GL function. This is the GLX 1.4 name for 2579 * \c glXGetProcAddressARB. 2580 * 2581 * \param procName Name of a GL or GLX function. 2582 * \returns A pointer to the named function 2583 * 2584 * \sa glXGetProcAddressARB 2585 */ 2586_X_EXPORT void (*glXGetProcAddress(const GLubyte * procName)) (void) 2587#if defined(__GNUC__) && !defined(GLX_ALIAS_UNSUPPORTED) 2588 __attribute__ ((alias("glXGetProcAddressARB"))); 2589#else 2590{ 2591 return glXGetProcAddressARB(procName); 2592} 2593#endif /* __GNUC__ */ 2594 2595 2596#if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL) 2597/** 2598 * Get the unadjusted system time (UST). Currently, the UST is measured in 2599 * microseconds since Epoc. The actual resolution of the UST may vary from 2600 * system to system, and the units may vary from release to release. 2601 * Drivers should not call this function directly. They should instead use 2602 * \c glXGetProcAddress to obtain a pointer to the function. 2603 * 2604 * \param ust Location to store the 64-bit UST 2605 * \returns Zero on success or a negative errno value on failure. 2606 * 2607 * \sa glXGetProcAddress, PFNGLXGETUSTPROC 2608 * 2609 * \since Internal API version 20030317. 2610 */ 2611_X_HIDDEN int 2612__glXGetUST(int64_t * ust) 2613{ 2614 struct timeval tv; 2615 2616 if (ust == NULL) { 2617 return -EFAULT; 2618 } 2619 2620 if (gettimeofday(&tv, NULL) == 0) { 2621 ust[0] = (tv.tv_sec * 1000000) + tv.tv_usec; 2622 return 0; 2623 } 2624 else { 2625 return -errno; 2626 } 2627} 2628#endif /* GLX_DIRECT_RENDERING */ 2629