glxcmds.c revision e157f381f21a1d5307f64b6ec3cc1b26d4ddf576
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 94/** 95 * Get the GLX per-screen data structure associated with a GLX context. 96 * 97 * \param dpy Display for which the GLX per-screen information is to be 98 * retrieved. 99 * \param scrn Screen on \c dpy for which the GLX per-screen information is 100 * to be retrieved. 101 * \returns A pointer to the GLX per-screen data if \c dpy and \c scrn 102 * specify a valid GLX screen, or NULL otherwise. 103 * 104 * \todo Should this function validate that \c scrn is within the screen 105 * number range for \c dpy? 106 */ 107 108static struct glx_screen * 109GetGLXScreenConfigs(Display * dpy, int scrn) 110{ 111 struct glx_display *const priv = __glXInitialize(dpy); 112 113 return (priv 114 && priv->screens != 115 NULL) ? priv->screens[scrn] : NULL; 116} 117 118 119static int 120GetGLXPrivScreenConfig(Display * dpy, int scrn, struct glx_display ** ppriv, 121 struct glx_screen ** ppsc) 122{ 123 /* Initialize the extension, if needed . This has the added value 124 * of initializing/allocating the display private 125 */ 126 127 if (dpy == NULL) { 128 return GLX_NO_EXTENSION; 129 } 130 131 *ppriv = __glXInitialize(dpy); 132 if (*ppriv == NULL) { 133 return GLX_NO_EXTENSION; 134 } 135 136 /* Check screen number to see if its valid */ 137 if ((scrn < 0) || (scrn >= ScreenCount(dpy))) { 138 return GLX_BAD_SCREEN; 139 } 140 141 /* Check to see if the GL is supported on this screen */ 142 *ppsc = (*ppriv)->screens[scrn]; 143 if ((*ppsc)->configs == NULL) { 144 /* No support for GL on this screen regardless of visual */ 145 return GLX_BAD_VISUAL; 146 } 147 148 return Success; 149} 150 151 152/** 153 * Determine if a \c GLXFBConfig supplied by the application is valid. 154 * 155 * \param dpy Application supplied \c Display pointer. 156 * \param config Application supplied \c GLXFBConfig. 157 * 158 * \returns If the \c GLXFBConfig is valid, the a pointer to the matching 159 * \c struct glx_config structure is returned. Otherwise, \c NULL 160 * is returned. 161 */ 162static struct glx_config * 163ValidateGLXFBConfig(Display * dpy, GLXFBConfig fbconfig) 164{ 165 struct glx_display *const priv = __glXInitialize(dpy); 166 int num_screens = ScreenCount(dpy); 167 unsigned i; 168 struct glx_config *config; 169 170 if (priv != NULL) { 171 for (i = 0; i < num_screens; i++) { 172 for (config = priv->screens[i]->configs; config != NULL; 173 config = config->next) { 174 if (config == (struct glx_config *) fbconfig) { 175 return config; 176 } 177 } 178 } 179 } 180 181 return NULL; 182} 183 184_X_HIDDEN Bool 185glx_context_init(struct glx_context *gc, 186 struct glx_screen *psc, struct glx_config *config) 187{ 188 gc->majorOpcode = __glXSetupForCommand(psc->display->dpy); 189 if (!gc->majorOpcode) 190 return GL_FALSE; 191 192 gc->screen = psc->scr; 193 gc->psc = psc; 194 gc->config = config; 195 gc->isDirect = GL_TRUE; 196 gc->currentContextTag = -1; 197 198 return GL_TRUE; 199} 200 201 202/** 203 * Create a new context. 204 * 205 * \param renderType For FBConfigs, what is the rendering type? 206 */ 207 208static GLXContext 209CreateContext(Display *dpy, int generic_id, struct glx_config *config, 210 GLXContext shareList_user, Bool allowDirect, 211 unsigned code, int renderType, int screen) 212{ 213 struct glx_context *gc; 214 struct glx_screen *psc; 215 struct glx_context *shareList = (struct glx_context *) shareList_user; 216 if (dpy == NULL) 217 return NULL; 218 219 psc = GetGLXScreenConfigs(dpy, screen); 220 if (psc == NULL) 221 return NULL; 222 223 if (generic_id == None) 224 return NULL; 225 226 gc = NULL; 227#ifdef GLX_USE_APPLEGL 228 gc = applegl_create_context(psc, config, shareList, renderType); 229#else 230 if (allowDirect && psc->vtable->create_context) 231 gc = psc->vtable->create_context(psc, config, shareList, renderType); 232 if (!gc) 233 gc = indirect_create_context(psc, config, shareList, renderType); 234#endif 235 if (!gc) 236 return NULL; 237 238 LockDisplay(dpy); 239 switch (code) { 240 case X_GLXCreateContext: { 241 xGLXCreateContextReq *req; 242 243 /* Send the glXCreateContext request */ 244 GetReq(GLXCreateContext, req); 245 req->reqType = gc->majorOpcode; 246 req->glxCode = X_GLXCreateContext; 247 req->context = gc->xid = XAllocID(dpy); 248 req->visual = generic_id; 249 req->screen = screen; 250 req->shareList = shareList ? shareList->xid : None; 251 req->isDirect = gc->isDirect; 252 break; 253 } 254 255 case X_GLXCreateNewContext: { 256 xGLXCreateNewContextReq *req; 257 258 /* Send the glXCreateNewContext request */ 259 GetReq(GLXCreateNewContext, req); 260 req->reqType = gc->majorOpcode; 261 req->glxCode = X_GLXCreateNewContext; 262 req->context = gc->xid = XAllocID(dpy); 263 req->fbconfig = generic_id; 264 req->screen = screen; 265 req->renderType = renderType; 266 req->shareList = shareList ? shareList->xid : None; 267 req->isDirect = gc->isDirect; 268 break; 269 } 270 271 case X_GLXvop_CreateContextWithConfigSGIX: { 272 xGLXVendorPrivateWithReplyReq *vpreq; 273 xGLXCreateContextWithConfigSGIXReq *req; 274 275 /* Send the glXCreateNewContext request */ 276 GetReqExtra(GLXVendorPrivateWithReply, 277 sz_xGLXCreateContextWithConfigSGIXReq - 278 sz_xGLXVendorPrivateWithReplyReq, vpreq); 279 req = (xGLXCreateContextWithConfigSGIXReq *) vpreq; 280 req->reqType = gc->majorOpcode; 281 req->glxCode = X_GLXVendorPrivateWithReply; 282 req->vendorCode = X_GLXvop_CreateContextWithConfigSGIX; 283 req->context = gc->xid = XAllocID(dpy); 284 req->fbconfig = generic_id; 285 req->screen = screen; 286 req->renderType = renderType; 287 req->shareList = shareList ? shareList->xid : None; 288 req->isDirect = gc->isDirect; 289 break; 290 } 291 292 default: 293 /* What to do here? This case is the sign of an internal error. It 294 * should never be reachable. 295 */ 296 break; 297 } 298 299 UnlockDisplay(dpy); 300 SyncHandle(); 301 302 gc->imported = GL_FALSE; 303 gc->renderType = renderType; 304 305 return (GLXContext) gc; 306} 307 308_X_EXPORT GLXContext 309glXCreateContext(Display * dpy, XVisualInfo * vis, 310 GLXContext shareList, Bool allowDirect) 311{ 312 struct glx_config *config = NULL; 313 int renderType = 0; 314 315#if defined(GLX_DIRECT_RENDERING) || defined(GLX_USE_APPLEGL) 316 struct glx_screen *const psc = GetGLXScreenConfigs(dpy, vis->screen); 317 318 config = glx_config_find_visual(psc->visuals, vis->visualid); 319 if (config == NULL) { 320 xError error; 321 322 error.errorCode = BadValue; 323 error.resourceID = vis->visualid; 324 error.sequenceNumber = dpy->request; 325 error.type = X_Error; 326 error.majorCode = __glXSetupForCommand(dpy); 327 error.minorCode = X_GLXCreateContext; 328 _XError(dpy, &error); 329 return None; 330 } 331 332 renderType = config->rgbMode ? GLX_RGBA_TYPE : GLX_COLOR_INDEX_TYPE; 333#endif 334 335 return CreateContext(dpy, vis->visualid, config, shareList, allowDirect, 336 X_GLXCreateContext, renderType, vis->screen); 337} 338 339_X_HIDDEN void 340glx_send_destroy_context(Display *dpy, XID xid) 341{ 342 CARD8 opcode = __glXSetupForCommand(dpy); 343 xGLXDestroyContextReq *req; 344 345 LockDisplay(dpy); 346 GetReq(GLXDestroyContext, req); 347 req->reqType = opcode; 348 req->glxCode = X_GLXDestroyContext; 349 req->context = xid; 350 UnlockDisplay(dpy); 351 SyncHandle(); 352} 353 354/* 355** Destroy the named context 356*/ 357static void 358DestroyContext(Display * dpy, GLXContext ctx) 359{ 360 struct glx_context *gc = (struct glx_context *) ctx; 361 362 if (!gc) 363 return; 364 365 __glXLock(); 366 if (gc->currentDpy) { 367 /* This context is bound to some thread. According to the man page, 368 * we should not actually delete the context until it's unbound. 369 * Note that we set gc->xid = None above. In MakeContextCurrent() 370 * we check for that and delete the context there. 371 */ 372 if (!gc->imported) 373 glx_send_destroy_context(dpy, gc->xid); 374 gc->xid = None; 375 __glXUnlock(); 376 return; 377 } 378 __glXUnlock(); 379 380 if (gc->vtable->destroy) 381 gc->vtable->destroy(gc); 382} 383 384_X_EXPORT void 385glXDestroyContext(Display * dpy, GLXContext gc) 386{ 387 DestroyContext(dpy, gc); 388} 389 390/* 391** Return the major and minor version #s for the GLX extension 392*/ 393_X_EXPORT Bool 394glXQueryVersion(Display * dpy, int *major, int *minor) 395{ 396 struct glx_display *priv; 397 398 /* Init the extension. This fetches the major and minor version. */ 399 priv = __glXInitialize(dpy); 400 if (!priv) 401 return GL_FALSE; 402 403 if (major) 404 *major = priv->majorVersion; 405 if (minor) 406 *minor = priv->minorVersion; 407 return GL_TRUE; 408} 409 410/* 411** Query the existance of the GLX extension 412*/ 413_X_EXPORT Bool 414glXQueryExtension(Display * dpy, int *errorBase, int *eventBase) 415{ 416 int major_op, erb, evb; 417 Bool rv; 418 419 rv = XQueryExtension(dpy, GLX_EXTENSION_NAME, &major_op, &evb, &erb); 420 if (rv) { 421 if (errorBase) 422 *errorBase = erb; 423 if (eventBase) 424 *eventBase = evb; 425 } 426 return rv; 427} 428 429/* 430** Put a barrier in the token stream that forces the GL to finish its 431** work before X can proceed. 432*/ 433_X_EXPORT void 434glXWaitGL(void) 435{ 436 struct glx_context *gc = __glXGetCurrentContext(); 437 438 if (gc && gc->vtable->wait_gl) 439 gc->vtable->wait_gl(gc); 440} 441 442/* 443** Put a barrier in the token stream that forces X to finish its 444** work before GL can proceed. 445*/ 446_X_EXPORT void 447glXWaitX(void) 448{ 449 struct glx_context *gc = __glXGetCurrentContext(); 450 451 if (gc && gc->vtable->wait_x) 452 gc->vtable->wait_x(gc); 453} 454 455_X_EXPORT void 456glXUseXFont(Font font, int first, int count, int listBase) 457{ 458 struct glx_context *gc = __glXGetCurrentContext(); 459 460 if (gc && gc->vtable->use_x_font) 461 gc->vtable->use_x_font(gc, font, first, count, listBase); 462} 463 464/************************************************************************/ 465 466/* 467** Copy the source context to the destination context using the 468** attribute "mask". 469*/ 470_X_EXPORT void 471glXCopyContext(Display * dpy, GLXContext source_user, 472 GLXContext dest_user, unsigned long mask) 473{ 474 struct glx_context *source = (struct glx_context *) source_user; 475 struct glx_context *dest = (struct glx_context *) dest_user; 476#ifdef GLX_USE_APPLEGL 477 struct glx_context *gc = __glXGetCurrentContext(); 478 int errorcode; 479 bool x11error; 480 481 if(apple_glx_copy_context(gc->driContext, source->driContext, dest->driContext, 482 mask, &errorcode, &x11error)) { 483 __glXSendError(dpy, errorcode, 0, X_GLXCopyContext, x11error); 484 } 485 486#else 487 xGLXCopyContextReq *req; 488 struct glx_context *gc = __glXGetCurrentContext(); 489 GLXContextTag tag; 490 CARD8 opcode; 491 492 opcode = __glXSetupForCommand(dpy); 493 if (!opcode) { 494 return; 495 } 496 497#if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL) 498 if (gc->isDirect) { 499 /* NOT_DONE: This does not work yet */ 500 } 501#endif 502 503 /* 504 ** If the source is the current context, send its tag so that the context 505 ** can be flushed before the copy. 506 */ 507 if (source == gc && dpy == gc->currentDpy) { 508 tag = gc->currentContextTag; 509 } 510 else { 511 tag = 0; 512 } 513 514 /* Send the glXCopyContext request */ 515 LockDisplay(dpy); 516 GetReq(GLXCopyContext, req); 517 req->reqType = opcode; 518 req->glxCode = X_GLXCopyContext; 519 req->source = source ? source->xid : None; 520 req->dest = dest ? dest->xid : None; 521 req->mask = mask; 522 req->contextTag = tag; 523 UnlockDisplay(dpy); 524 SyncHandle(); 525#endif /* GLX_USE_APPLEGL */ 526} 527 528 529/** 530 * Determine if a context uses direct rendering. 531 * 532 * \param dpy Display where the context was created. 533 * \param contextID ID of the context to be tested. 534 * 535 * \returns \c GL_TRUE if the context is direct rendering or not. 536 */ 537static Bool 538__glXIsDirect(Display * dpy, GLXContextID contextID) 539{ 540#if !defined(USE_XCB) 541 xGLXIsDirectReq *req; 542 xGLXIsDirectReply reply; 543#endif 544 CARD8 opcode; 545 546 opcode = __glXSetupForCommand(dpy); 547 if (!opcode) { 548 return GL_FALSE; 549 } 550 551#ifdef USE_XCB 552 xcb_connection_t *c = XGetXCBConnection(dpy); 553 xcb_glx_is_direct_reply_t *reply = xcb_glx_is_direct_reply(c, 554 xcb_glx_is_direct 555 (c, contextID), 556 NULL); 557 558 const Bool is_direct = reply->is_direct ? True : False; 559 free(reply); 560 561 return is_direct; 562#else 563 /* Send the glXIsDirect request */ 564 LockDisplay(dpy); 565 GetReq(GLXIsDirect, req); 566 req->reqType = opcode; 567 req->glxCode = X_GLXIsDirect; 568 req->context = contextID; 569 _XReply(dpy, (xReply *) & reply, 0, False); 570 UnlockDisplay(dpy); 571 SyncHandle(); 572 573 return reply.isDirect; 574#endif /* USE_XCB */ 575} 576 577/** 578 * \todo 579 * Shouldn't this function \b always return \c GL_FALSE when 580 * \c GLX_DIRECT_RENDERING is not defined? Do we really need to bother with 581 * the GLX protocol here at all? 582 */ 583_X_EXPORT Bool 584glXIsDirect(Display * dpy, GLXContext gc_user) 585{ 586 struct glx_context *gc = (struct glx_context *) gc_user; 587 588 if (!gc) { 589 return GL_FALSE; 590 } 591 else if (gc->isDirect) { 592 return GL_TRUE; 593 } 594#ifdef GLX_USE_APPLEGL /* TODO: indirect on darwin */ 595 return GL_FALSE; 596#else 597 return __glXIsDirect(dpy, gc->xid); 598#endif 599} 600 601_X_EXPORT GLXPixmap 602glXCreateGLXPixmap(Display * dpy, XVisualInfo * vis, Pixmap pixmap) 603{ 604#ifdef GLX_USE_APPLEGL 605 int screen = vis->screen; 606 struct glx_screen *const psc = GetGLXScreenConfigs(dpy, screen); 607 const struct glx_config *config; 608 609 config = glx_config_find_visual(psc->visuals, vis->visualid); 610 611 if(apple_glx_pixmap_create(dpy, vis->screen, pixmap, config)) 612 return None; 613 614 return pixmap; 615#else 616 xGLXCreateGLXPixmapReq *req; 617 GLXPixmap xid; 618 CARD8 opcode; 619 620 opcode = __glXSetupForCommand(dpy); 621 if (!opcode) { 622 return None; 623 } 624 625 /* Send the glXCreateGLXPixmap request */ 626 LockDisplay(dpy); 627 GetReq(GLXCreateGLXPixmap, req); 628 req->reqType = opcode; 629 req->glxCode = X_GLXCreateGLXPixmap; 630 req->screen = vis->screen; 631 req->visual = vis->visualid; 632 req->pixmap = pixmap; 633 req->glxpixmap = xid = XAllocID(dpy); 634 UnlockDisplay(dpy); 635 SyncHandle(); 636 637#if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL) 638 do { 639 /* FIXME: Maybe delay __DRIdrawable creation until the drawable 640 * is actually bound to a context... */ 641 642 struct glx_display *const priv = __glXInitialize(dpy); 643 __GLXDRIdrawable *pdraw; 644 struct glx_screen *psc; 645 struct glx_config *config; 646 647 psc = priv->screens[vis->screen]; 648 if (psc->driScreen == NULL) 649 break; 650 config = glx_config_find_visual(psc->visuals, vis->visualid); 651 pdraw = psc->driScreen->createDrawable(psc, pixmap, xid, config); 652 if (pdraw == NULL) { 653 fprintf(stderr, "failed to create pixmap\n"); 654 break; 655 } 656 657 if (__glxHashInsert(priv->drawHash, xid, pdraw)) { 658 (*pdraw->destroyDrawable) (pdraw); 659 return None; /* FIXME: Check what we're supposed to do here... */ 660 } 661 } while (0); 662#endif 663 664 return xid; 665#endif 666} 667 668/* 669** Destroy the named pixmap 670*/ 671_X_EXPORT void 672glXDestroyGLXPixmap(Display * dpy, GLXPixmap glxpixmap) 673{ 674#ifdef GLX_USE_APPLEGL 675 if(apple_glx_pixmap_destroy(dpy, glxpixmap)) 676 __glXSendError(dpy, GLXBadPixmap, glxpixmap, X_GLXDestroyPixmap, false); 677#else 678 xGLXDestroyGLXPixmapReq *req; 679 CARD8 opcode; 680 681 opcode = __glXSetupForCommand(dpy); 682 if (!opcode) { 683 return; 684 } 685 686 /* Send the glXDestroyGLXPixmap request */ 687 LockDisplay(dpy); 688 GetReq(GLXDestroyGLXPixmap, req); 689 req->reqType = opcode; 690 req->glxCode = X_GLXDestroyGLXPixmap; 691 req->glxpixmap = glxpixmap; 692 UnlockDisplay(dpy); 693 SyncHandle(); 694 695#if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL) 696 { 697 struct glx_display *const priv = __glXInitialize(dpy); 698 __GLXDRIdrawable *pdraw = GetGLXDRIDrawable(dpy, glxpixmap); 699 700 if (pdraw != NULL) { 701 (*pdraw->destroyDrawable) (pdraw); 702 __glxHashDelete(priv->drawHash, glxpixmap); 703 } 704 } 705#endif 706#endif /* GLX_USE_APPLEGL */ 707} 708 709_X_EXPORT void 710glXSwapBuffers(Display * dpy, GLXDrawable drawable) 711{ 712#ifdef GLX_USE_APPLEGL 713 struct glx_context * gc = __glXGetCurrentContext(); 714 if(gc && apple_glx_is_current_drawable(dpy, gc->driContext, drawable)) { 715 apple_glx_swap_buffers(gc->driContext); 716 } else { 717 __glXSendError(dpy, GLXBadCurrentWindow, 0, X_GLXSwapBuffers, false); 718 } 719#else 720 struct glx_context *gc; 721 GLXContextTag tag; 722 CARD8 opcode; 723#ifdef USE_XCB 724 xcb_connection_t *c; 725#else 726 xGLXSwapBuffersReq *req; 727#endif 728 729 gc = __glXGetCurrentContext(); 730 731#if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL) 732 __GLXDRIdrawable *pdraw = GetGLXDRIDrawable(dpy, drawable); 733 734 if (pdraw != NULL) { 735 if (gc && drawable == gc->currentDrawable) { 736 glFlush(); 737 } 738 739 (*pdraw->psc->driScreen->swapBuffers)(pdraw, 0, 0, 0); 740 return; 741 } 742#endif 743 744 opcode = __glXSetupForCommand(dpy); 745 if (!opcode) { 746 return; 747 } 748 749 /* 750 ** The calling thread may or may not have a current context. If it 751 ** does, send the context tag so the server can do a flush. 752 */ 753 if ((gc != NULL) && (dpy == gc->currentDpy) && 754 ((drawable == gc->currentDrawable) 755 || (drawable == gc->currentReadable))) { 756 tag = gc->currentContextTag; 757 } 758 else { 759 tag = 0; 760 } 761 762#ifdef USE_XCB 763 c = XGetXCBConnection(dpy); 764 xcb_glx_swap_buffers(c, tag, drawable); 765 xcb_flush(c); 766#else 767 /* Send the glXSwapBuffers request */ 768 LockDisplay(dpy); 769 GetReq(GLXSwapBuffers, req); 770 req->reqType = opcode; 771 req->glxCode = X_GLXSwapBuffers; 772 req->drawable = drawable; 773 req->contextTag = tag; 774 UnlockDisplay(dpy); 775 SyncHandle(); 776 XFlush(dpy); 777#endif /* USE_XCB */ 778#endif /* GLX_USE_APPLEGL */ 779} 780 781 782/* 783** Return configuration information for the given display, screen and 784** visual combination. 785*/ 786_X_EXPORT int 787glXGetConfig(Display * dpy, XVisualInfo * vis, int attribute, 788 int *value_return) 789{ 790 struct glx_display *priv; 791 struct glx_screen *psc; 792 struct glx_config *config; 793 int status; 794 795 status = GetGLXPrivScreenConfig(dpy, vis->screen, &priv, &psc); 796 if (status == Success) { 797 config = glx_config_find_visual(psc->visuals, vis->visualid); 798 799 /* Lookup attribute after first finding a match on the visual */ 800 if (config != NULL) { 801 return glx_config_get(config, attribute, value_return); 802 } 803 804 status = GLX_BAD_VISUAL; 805 } 806 807 /* 808 ** If we can't find the config for this visual, this visual is not 809 ** supported by the OpenGL implementation on the server. 810 */ 811 if ((status == GLX_BAD_VISUAL) && (attribute == GLX_USE_GL)) { 812 *value_return = GL_FALSE; 813 status = Success; 814 } 815 816 return status; 817} 818 819/************************************************************************/ 820 821static void 822init_fbconfig_for_chooser(struct glx_config * config, 823 GLboolean fbconfig_style_tags) 824{ 825 memset(config, 0, sizeof(struct glx_config)); 826 config->visualID = (XID) GLX_DONT_CARE; 827 config->visualType = GLX_DONT_CARE; 828 829 /* glXChooseFBConfig specifies different defaults for these two than 830 * glXChooseVisual. 831 */ 832 if (fbconfig_style_tags) { 833 config->rgbMode = GL_TRUE; 834 config->doubleBufferMode = GLX_DONT_CARE; 835 } 836 837 config->visualRating = GLX_DONT_CARE; 838 config->transparentPixel = GLX_NONE; 839 config->transparentRed = GLX_DONT_CARE; 840 config->transparentGreen = GLX_DONT_CARE; 841 config->transparentBlue = GLX_DONT_CARE; 842 config->transparentAlpha = GLX_DONT_CARE; 843 config->transparentIndex = GLX_DONT_CARE; 844 845 config->drawableType = GLX_WINDOW_BIT; 846 config->renderType = 847 (config->rgbMode) ? GLX_RGBA_BIT : GLX_COLOR_INDEX_BIT; 848 config->xRenderable = GLX_DONT_CARE; 849 config->fbconfigID = (GLXFBConfigID) (GLX_DONT_CARE); 850 851 config->swapMethod = GLX_DONT_CARE; 852} 853 854#define MATCH_DONT_CARE( param ) \ 855 do { \ 856 if ( ((int) a-> param != (int) GLX_DONT_CARE) \ 857 && (a-> param != b-> param) ) { \ 858 return False; \ 859 } \ 860 } while ( 0 ) 861 862#define MATCH_MINIMUM( param ) \ 863 do { \ 864 if ( ((int) a-> param != (int) GLX_DONT_CARE) \ 865 && (a-> param > b-> param) ) { \ 866 return False; \ 867 } \ 868 } while ( 0 ) 869 870#define MATCH_EXACT( param ) \ 871 do { \ 872 if ( a-> param != b-> param) { \ 873 return False; \ 874 } \ 875 } while ( 0 ) 876 877/* Test that all bits from a are contained in b */ 878#define MATCH_MASK(param) \ 879 do { \ 880 if ((a->param & ~b->param) != 0) \ 881 return False; \ 882 } while (0); 883 884/** 885 * Determine if two GLXFBConfigs are compatible. 886 * 887 * \param a Application specified config to test. 888 * \param b Server specified config to test against \c a. 889 */ 890static Bool 891fbconfigs_compatible(const struct glx_config * const a, 892 const struct glx_config * const b) 893{ 894 MATCH_DONT_CARE(doubleBufferMode); 895 MATCH_DONT_CARE(visualType); 896 MATCH_DONT_CARE(visualRating); 897 MATCH_DONT_CARE(xRenderable); 898 MATCH_DONT_CARE(fbconfigID); 899 MATCH_DONT_CARE(swapMethod); 900 901 MATCH_MINIMUM(rgbBits); 902 MATCH_MINIMUM(numAuxBuffers); 903 MATCH_MINIMUM(redBits); 904 MATCH_MINIMUM(greenBits); 905 MATCH_MINIMUM(blueBits); 906 MATCH_MINIMUM(alphaBits); 907 MATCH_MINIMUM(depthBits); 908 MATCH_MINIMUM(stencilBits); 909 MATCH_MINIMUM(accumRedBits); 910 MATCH_MINIMUM(accumGreenBits); 911 MATCH_MINIMUM(accumBlueBits); 912 MATCH_MINIMUM(accumAlphaBits); 913 MATCH_MINIMUM(sampleBuffers); 914 MATCH_MINIMUM(maxPbufferWidth); 915 MATCH_MINIMUM(maxPbufferHeight); 916 MATCH_MINIMUM(maxPbufferPixels); 917 MATCH_MINIMUM(samples); 918 919 MATCH_DONT_CARE(stereoMode); 920 MATCH_EXACT(level); 921 922 MATCH_MASK(drawableType); 923 MATCH_MASK(renderType); 924 925 /* There is a bug in a few of the XFree86 DDX drivers. They contain 926 * visuals with a "transparent type" of 0 when they really mean GLX_NONE. 927 * Technically speaking, it is a bug in the DDX driver, but there is 928 * enough of an installed base to work around the problem here. In any 929 * case, 0 is not a valid value of the transparent type, so we'll treat 0 930 * from the app as GLX_DONT_CARE. We'll consider GLX_NONE from the app and 931 * 0 from the server to be a match to maintain backward compatibility with 932 * the (broken) drivers. 933 */ 934 935 if (a->transparentPixel != (int) GLX_DONT_CARE && a->transparentPixel != 0) { 936 if (a->transparentPixel == GLX_NONE) { 937 if (b->transparentPixel != GLX_NONE && b->transparentPixel != 0) 938 return False; 939 } 940 else { 941 MATCH_EXACT(transparentPixel); 942 } 943 944 switch (a->transparentPixel) { 945 case GLX_TRANSPARENT_RGB: 946 MATCH_DONT_CARE(transparentRed); 947 MATCH_DONT_CARE(transparentGreen); 948 MATCH_DONT_CARE(transparentBlue); 949 MATCH_DONT_CARE(transparentAlpha); 950 break; 951 952 case GLX_TRANSPARENT_INDEX: 953 MATCH_DONT_CARE(transparentIndex); 954 break; 955 956 default: 957 break; 958 } 959 } 960 961 return True; 962} 963 964 965/* There's some trickly language in the GLX spec about how this is supposed 966 * to work. Basically, if a given component size is either not specified 967 * or the requested size is zero, it is supposed to act like PERFER_SMALLER. 968 * Well, that's really hard to do with the code as-is. This behavior is 969 * closer to correct, but still not technically right. 970 */ 971#define PREFER_LARGER_OR_ZERO(comp) \ 972 do { \ 973 if ( ((*a)-> comp) != ((*b)-> comp) ) { \ 974 if ( ((*a)-> comp) == 0 ) { \ 975 return -1; \ 976 } \ 977 else if ( ((*b)-> comp) == 0 ) { \ 978 return 1; \ 979 } \ 980 else { \ 981 return ((*b)-> comp) - ((*a)-> comp) ; \ 982 } \ 983 } \ 984 } while( 0 ) 985 986#define PREFER_LARGER(comp) \ 987 do { \ 988 if ( ((*a)-> comp) != ((*b)-> comp) ) { \ 989 return ((*b)-> comp) - ((*a)-> comp) ; \ 990 } \ 991 } while( 0 ) 992 993#define PREFER_SMALLER(comp) \ 994 do { \ 995 if ( ((*a)-> comp) != ((*b)-> comp) ) { \ 996 return ((*a)-> comp) - ((*b)-> comp) ; \ 997 } \ 998 } while( 0 ) 999 1000/** 1001 * Compare two GLXFBConfigs. This function is intended to be used as the 1002 * compare function passed in to qsort. 1003 * 1004 * \returns If \c a is a "better" config, according to the specification of 1005 * SGIX_fbconfig, a number less than zero is returned. If \c b is 1006 * better, then a number greater than zero is return. If both are 1007 * equal, zero is returned. 1008 * \sa qsort, glXChooseVisual, glXChooseFBConfig, glXChooseFBConfigSGIX 1009 */ 1010static int 1011fbconfig_compare(struct glx_config **a, struct glx_config **b) 1012{ 1013 /* The order of these comparisons must NOT change. It is defined by 1014 * the GLX 1.3 spec and ARB_multisample. 1015 */ 1016 1017 PREFER_SMALLER(visualSelectGroup); 1018 1019 /* The sort order for the visualRating is GLX_NONE, GLX_SLOW, and 1020 * GLX_NON_CONFORMANT_CONFIG. It just so happens that this is the 1021 * numerical sort order of the enums (0x8000, 0x8001, and 0x800D). 1022 */ 1023 PREFER_SMALLER(visualRating); 1024 1025 /* This isn't quite right. It is supposed to compare the sum of the 1026 * components the user specifically set minimums for. 1027 */ 1028 PREFER_LARGER_OR_ZERO(redBits); 1029 PREFER_LARGER_OR_ZERO(greenBits); 1030 PREFER_LARGER_OR_ZERO(blueBits); 1031 PREFER_LARGER_OR_ZERO(alphaBits); 1032 1033 PREFER_SMALLER(rgbBits); 1034 1035 if (((*a)->doubleBufferMode != (*b)->doubleBufferMode)) { 1036 /* Prefer single-buffer. 1037 */ 1038 return (!(*a)->doubleBufferMode) ? -1 : 1; 1039 } 1040 1041 PREFER_SMALLER(numAuxBuffers); 1042 1043 PREFER_LARGER_OR_ZERO(depthBits); 1044 PREFER_SMALLER(stencilBits); 1045 1046 /* This isn't quite right. It is supposed to compare the sum of the 1047 * components the user specifically set minimums for. 1048 */ 1049 PREFER_LARGER_OR_ZERO(accumRedBits); 1050 PREFER_LARGER_OR_ZERO(accumGreenBits); 1051 PREFER_LARGER_OR_ZERO(accumBlueBits); 1052 PREFER_LARGER_OR_ZERO(accumAlphaBits); 1053 1054 PREFER_SMALLER(visualType); 1055 1056 /* None of the multisample specs say where this comparison should happen, 1057 * so I put it near the end. 1058 */ 1059 PREFER_SMALLER(sampleBuffers); 1060 PREFER_SMALLER(samples); 1061 1062 /* None of the pbuffer or fbconfig specs say that this comparison needs 1063 * to happen at all, but it seems like it should. 1064 */ 1065 PREFER_LARGER(maxPbufferWidth); 1066 PREFER_LARGER(maxPbufferHeight); 1067 PREFER_LARGER(maxPbufferPixels); 1068 1069 return 0; 1070} 1071 1072 1073/** 1074 * Selects and sorts a subset of the supplied configs based on the attributes. 1075 * This function forms to basis of \c glXChooseVisual, \c glXChooseFBConfig, 1076 * and \c glXChooseFBConfigSGIX. 1077 * 1078 * \param configs Array of pointers to possible configs. The elements of 1079 * this array that do not meet the criteria will be set to 1080 * NULL. The remaining elements will be sorted according to 1081 * the various visual / FBConfig selection rules. 1082 * \param num_configs Number of elements in the \c configs array. 1083 * \param attribList Attributes used select from \c configs. This array is 1084 * terminated by a \c None tag. The array can either take 1085 * the form expected by \c glXChooseVisual (where boolean 1086 * tags do not have a value) or by \c glXChooseFBConfig 1087 * (where every tag has a value). 1088 * \param fbconfig_style_tags Selects whether \c attribList is in 1089 * \c glXChooseVisual style or 1090 * \c glXChooseFBConfig style. 1091 * \returns The number of valid elements left in \c configs. 1092 * 1093 * \sa glXChooseVisual, glXChooseFBConfig, glXChooseFBConfigSGIX 1094 */ 1095static int 1096choose_visual(struct glx_config ** configs, int num_configs, 1097 const int *attribList, GLboolean fbconfig_style_tags) 1098{ 1099 struct glx_config test_config; 1100 int base; 1101 int i; 1102 1103 /* This is a fairly direct implementation of the selection method 1104 * described by GLX_SGIX_fbconfig. Start by culling out all the 1105 * configs that are not compatible with the selected parameter 1106 * list. 1107 */ 1108 1109 init_fbconfig_for_chooser(&test_config, fbconfig_style_tags); 1110 __glXInitializeVisualConfigFromTags(&test_config, 512, 1111 (const INT32 *) attribList, 1112 GL_TRUE, fbconfig_style_tags); 1113 1114 base = 0; 1115 for (i = 0; i < num_configs; i++) { 1116 if (fbconfigs_compatible(&test_config, configs[i])) { 1117 configs[base] = configs[i]; 1118 base++; 1119 } 1120 } 1121 1122 if (base == 0) { 1123 return 0; 1124 } 1125 1126 if (base < num_configs) { 1127 (void) memset(&configs[base], 0, sizeof(void *) * (num_configs - base)); 1128 } 1129 1130 /* After the incompatible configs are removed, the resulting 1131 * list is sorted according to the rules set out in the various 1132 * specifications. 1133 */ 1134 1135 qsort(configs, base, sizeof(struct glx_config *), 1136 (int (*)(const void *, const void *)) fbconfig_compare); 1137 return base; 1138} 1139 1140 1141 1142 1143/* 1144** Return the visual that best matches the template. Return None if no 1145** visual matches the template. 1146*/ 1147_X_EXPORT XVisualInfo * 1148glXChooseVisual(Display * dpy, int screen, int *attribList) 1149{ 1150 XVisualInfo *visualList = NULL; 1151 struct glx_display *priv; 1152 struct glx_screen *psc; 1153 struct glx_config test_config; 1154 struct glx_config *config; 1155 struct glx_config *best_config = NULL; 1156 1157 /* 1158 ** Get a list of all visuals, return if list is empty 1159 */ 1160 if (GetGLXPrivScreenConfig(dpy, screen, &priv, &psc) != Success) { 1161 return None; 1162 } 1163 1164 1165 /* 1166 ** Build a template from the defaults and the attribute list 1167 ** Free visual list and return if an unexpected token is encountered 1168 */ 1169 init_fbconfig_for_chooser(&test_config, GL_FALSE); 1170 __glXInitializeVisualConfigFromTags(&test_config, 512, 1171 (const INT32 *) attribList, 1172 GL_TRUE, GL_FALSE); 1173 1174 /* 1175 ** Eliminate visuals that don't meet minimum requirements 1176 ** Compute a score for those that do 1177 ** Remember which visual, if any, got the highest score 1178 ** If no visual is acceptable, return None 1179 ** Otherwise, create an XVisualInfo list with just the selected X visual 1180 ** and return this. 1181 */ 1182 for (config = psc->visuals; config != NULL; config = config->next) { 1183 if (fbconfigs_compatible(&test_config, config) 1184 && ((best_config == NULL) || 1185 (fbconfig_compare (&config, &best_config) < 0))) { 1186 XVisualInfo visualTemplate; 1187 XVisualInfo *newList; 1188 int i; 1189 1190 visualTemplate.screen = screen; 1191 visualTemplate.visualid = config->visualID; 1192 newList = XGetVisualInfo(dpy, VisualScreenMask | VisualIDMask, 1193 &visualTemplate, &i); 1194 1195 if (newList) { 1196 Xfree(visualList); 1197 visualList = newList; 1198 best_config = config; 1199 } 1200 } 1201 } 1202 1203#ifdef GLX_USE_APPLEGL 1204 if(visualList && getenv("LIBGL_DUMP_VISUALID")) { 1205 printf("visualid 0x%lx\n", visualList[0].visualid); 1206 } 1207#endif 1208 1209 return visualList; 1210} 1211 1212 1213_X_EXPORT const char * 1214glXQueryExtensionsString(Display * dpy, int screen) 1215{ 1216 struct glx_screen *psc; 1217 struct glx_display *priv; 1218 1219 if (GetGLXPrivScreenConfig(dpy, screen, &priv, &psc) != Success) { 1220 return NULL; 1221 } 1222 1223 if (!psc->effectiveGLXexts) { 1224 if (!psc->serverGLXexts) { 1225 psc->serverGLXexts = 1226 __glXQueryServerString(dpy, priv->majorOpcode, screen, 1227 GLX_EXTENSIONS); 1228 } 1229 1230 __glXCalculateUsableExtensions(psc, 1231#if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL) 1232 (psc->driScreen != NULL), 1233#else 1234 GL_FALSE, 1235#endif 1236 priv->minorVersion); 1237 } 1238 1239 return psc->effectiveGLXexts; 1240} 1241 1242_X_EXPORT const char * 1243glXGetClientString(Display * dpy, int name) 1244{ 1245 (void) dpy; 1246 1247 switch (name) { 1248 case GLX_VENDOR: 1249 return (__glXGLXClientVendorName); 1250 case GLX_VERSION: 1251 return (__glXGLXClientVersion); 1252 case GLX_EXTENSIONS: 1253 return (__glXGetClientExtensions()); 1254 default: 1255 return NULL; 1256 } 1257} 1258 1259_X_EXPORT const char * 1260glXQueryServerString(Display * dpy, int screen, int name) 1261{ 1262 struct glx_screen *psc; 1263 struct glx_display *priv; 1264 const char **str; 1265 1266 1267 if (GetGLXPrivScreenConfig(dpy, screen, &priv, &psc) != Success) { 1268 return NULL; 1269 } 1270 1271 switch (name) { 1272 case GLX_VENDOR: 1273 str = &priv->serverGLXvendor; 1274 break; 1275 case GLX_VERSION: 1276 str = &priv->serverGLXversion; 1277 break; 1278 case GLX_EXTENSIONS: 1279 str = &psc->serverGLXexts; 1280 break; 1281 default: 1282 return NULL; 1283 } 1284 1285 if (*str == NULL) { 1286 *str = __glXQueryServerString(dpy, priv->majorOpcode, screen, name); 1287 } 1288 1289 return *str; 1290} 1291 1292void 1293__glXClientInfo(Display * dpy, int opcode) 1294{ 1295 char *ext_str = __glXGetClientGLExtensionString(); 1296 int size = strlen(ext_str) + 1; 1297 1298#ifdef USE_XCB 1299 xcb_connection_t *c = XGetXCBConnection(dpy); 1300 xcb_glx_client_info(c, 1301 GLX_MAJOR_VERSION, GLX_MINOR_VERSION, size, ext_str); 1302#else 1303 xGLXClientInfoReq *req; 1304 1305 /* Send the glXClientInfo request */ 1306 LockDisplay(dpy); 1307 GetReq(GLXClientInfo, req); 1308 req->reqType = opcode; 1309 req->glxCode = X_GLXClientInfo; 1310 req->major = GLX_MAJOR_VERSION; 1311 req->minor = GLX_MINOR_VERSION; 1312 1313 req->length += (size + 3) >> 2; 1314 req->numbytes = size; 1315 Data(dpy, ext_str, size); 1316 1317 UnlockDisplay(dpy); 1318 SyncHandle(); 1319#endif /* USE_XCB */ 1320 1321 Xfree(ext_str); 1322} 1323 1324 1325/* 1326** EXT_import_context 1327*/ 1328 1329_X_EXPORT Display * 1330glXGetCurrentDisplay(void) 1331{ 1332 struct glx_context *gc = __glXGetCurrentContext(); 1333 if (NULL == gc) 1334 return NULL; 1335 return gc->currentDpy; 1336} 1337 1338_X_EXPORT 1339GLX_ALIAS(Display *, glXGetCurrentDisplayEXT, (void), (), 1340 glXGetCurrentDisplay) 1341 1342#ifndef GLX_USE_APPLEGL 1343_X_EXPORT GLXContext 1344glXImportContextEXT(Display *dpy, GLXContextID contextID) 1345{ 1346 struct glx_display *priv = __glXInitialize(dpy); 1347 struct glx_screen *psc; 1348 xGLXQueryContextReply reply; 1349 CARD8 opcode; 1350 struct glx_context *ctx; 1351 int propList[__GLX_MAX_CONTEXT_PROPS * 2], *pProp, nPropListBytes; 1352 int i, renderType; 1353 XID share; 1354 struct glx_config *mode; 1355 1356 if (contextID == None || __glXIsDirect(dpy, contextID)) 1357 return NULL; 1358 1359 opcode = __glXSetupForCommand(dpy); 1360 if (!opcode) 1361 return 0; 1362 1363 /* Send the glXQueryContextInfoEXT request */ 1364 LockDisplay(dpy); 1365 1366 if (priv->majorVersion > 1 || priv->minorVersion >= 3) { 1367 xGLXQueryContextReq *req; 1368 1369 GetReq(GLXQueryContext, req); 1370 1371 req->reqType = opcode; 1372 req->glxCode = X_GLXQueryContext; 1373 req->context = contextID; 1374 } 1375 else { 1376 xGLXVendorPrivateReq *vpreq; 1377 xGLXQueryContextInfoEXTReq *req; 1378 1379 GetReqExtra(GLXVendorPrivate, 1380 sz_xGLXQueryContextInfoEXTReq - sz_xGLXVendorPrivateReq, 1381 vpreq); 1382 req = (xGLXQueryContextInfoEXTReq *) vpreq; 1383 req->reqType = opcode; 1384 req->glxCode = X_GLXVendorPrivateWithReply; 1385 req->vendorCode = X_GLXvop_QueryContextInfoEXT; 1386 req->context = contextID; 1387 } 1388 1389 _XReply(dpy, (xReply *) & reply, 0, False); 1390 1391 if (reply.n <= __GLX_MAX_CONTEXT_PROPS) 1392 nPropListBytes = reply.n * 2 * sizeof propList[0]; 1393 else 1394 nPropListBytes = 0; 1395 _XRead(dpy, (char *) propList, nPropListBytes); 1396 UnlockDisplay(dpy); 1397 SyncHandle(); 1398 1399 /* Look up screen first so we can look up visuals/fbconfigs later */ 1400 psc = NULL; 1401 for (i = 0, pProp = propList; i < reply.n; i++, pProp += 2) 1402 if (pProp[0] == GLX_SCREEN) 1403 psc = GetGLXScreenConfigs(dpy, pProp[1]); 1404 if (psc == NULL) 1405 return NULL; 1406 1407 share = None; 1408 mode = NULL; 1409 renderType = 0; 1410 pProp = propList; 1411 1412 for (i = 0, pProp = propList; i < reply.n; i++, pProp += 2) 1413 switch (pProp[0]) { 1414 case GLX_SHARE_CONTEXT_EXT: 1415 share = pProp[1]; 1416 break; 1417 case GLX_VISUAL_ID_EXT: 1418 mode = glx_config_find_visual(psc->visuals, pProp[1]); 1419 break; 1420 case GLX_FBCONFIG_ID: 1421 mode = glx_config_find_fbconfig(psc->configs, pProp[1]); 1422 break; 1423 case GLX_RENDER_TYPE: 1424 renderType = pProp[1]; 1425 break; 1426 } 1427 1428 if (mode == NULL) 1429 return NULL; 1430 1431 ctx = indirect_create_context(psc, mode, NULL, renderType); 1432 if (ctx == NULL) 1433 return NULL; 1434 1435 ctx->xid = contextID; 1436 ctx->imported = GL_TRUE; 1437 ctx->share_xid = share; 1438 1439 return (GLXContext) ctx; 1440} 1441 1442#endif 1443 1444_X_EXPORT int 1445glXQueryContext(Display * dpy, GLXContext ctx_user, int attribute, int *value) 1446{ 1447 struct glx_context *ctx = (struct glx_context *) ctx_user; 1448 1449 switch (attribute) { 1450 case GLX_SHARE_CONTEXT_EXT: 1451 *value = ctx->share_xid; 1452 break; 1453 case GLX_VISUAL_ID_EXT: 1454 *value = ctx->config ? ctx->config->visualID : None; 1455 break; 1456 case GLX_SCREEN: 1457 *value = ctx->screen; 1458 break; 1459 case GLX_FBCONFIG_ID: 1460 *value = ctx->config ? ctx->config->fbconfigID : None; 1461 break; 1462 case GLX_RENDER_TYPE: 1463 *value = ctx->renderType; 1464 break; 1465 default: 1466 return GLX_BAD_ATTRIBUTE; 1467 } 1468 return Success; 1469} 1470 1471_X_EXPORT 1472GLX_ALIAS(int, glXQueryContextInfoEXT, 1473 (Display * dpy, GLXContext ctx, int attribute, int *value), 1474 (dpy, ctx, attribute, value), glXQueryContext) 1475 1476_X_EXPORT GLXContextID glXGetContextIDEXT(const GLXContext ctx_user) 1477{ 1478 struct glx_context *ctx = (struct glx_context *) ctx_user; 1479 1480 return ctx->xid; 1481} 1482 1483_X_EXPORT void 1484glXFreeContextEXT(Display * dpy, GLXContext ctx) 1485{ 1486 DestroyContext(dpy, ctx); 1487} 1488 1489 1490_X_EXPORT GLXFBConfig * 1491glXChooseFBConfig(Display * dpy, int screen, 1492 const int *attribList, int *nitems) 1493{ 1494 struct glx_config **config_list; 1495 int list_size; 1496 1497 1498 config_list = (struct glx_config **) 1499 glXGetFBConfigs(dpy, screen, &list_size); 1500 1501 if ((config_list != NULL) && (list_size > 0) && (attribList != NULL)) { 1502 list_size = choose_visual(config_list, list_size, attribList, GL_TRUE); 1503 if (list_size == 0) { 1504 XFree(config_list); 1505 config_list = NULL; 1506 } 1507 } 1508 1509 *nitems = list_size; 1510 return (GLXFBConfig *) config_list; 1511} 1512 1513 1514_X_EXPORT GLXContext 1515glXCreateNewContext(Display * dpy, GLXFBConfig fbconfig, 1516 int renderType, GLXContext shareList, Bool allowDirect) 1517{ 1518 struct glx_config *config = (struct glx_config *) fbconfig; 1519 1520 return CreateContext(dpy, config->fbconfigID, config, shareList, 1521 allowDirect, X_GLXCreateNewContext, renderType, 1522 config->screen); 1523} 1524 1525 1526_X_EXPORT GLXDrawable 1527glXGetCurrentReadDrawable(void) 1528{ 1529 struct glx_context *gc = __glXGetCurrentContext(); 1530 1531 return gc->currentReadable; 1532} 1533 1534 1535_X_EXPORT GLXFBConfig * 1536glXGetFBConfigs(Display * dpy, int screen, int *nelements) 1537{ 1538 struct glx_display *priv = __glXInitialize(dpy); 1539 struct glx_config **config_list = NULL; 1540 struct glx_config *config; 1541 unsigned num_configs = 0; 1542 int i; 1543 1544 *nelements = 0; 1545 if (priv && (priv->screens != NULL) 1546 && (screen >= 0) && (screen <= ScreenCount(dpy)) 1547 && (priv->screens[screen]->configs != NULL) 1548 && (priv->screens[screen]->configs->fbconfigID 1549 != (int) GLX_DONT_CARE)) { 1550 1551 for (config = priv->screens[screen]->configs; config != NULL; 1552 config = config->next) { 1553 if (config->fbconfigID != (int) GLX_DONT_CARE) { 1554 num_configs++; 1555 } 1556 } 1557 1558 config_list = Xmalloc(num_configs * sizeof *config_list); 1559 if (config_list != NULL) { 1560 *nelements = num_configs; 1561 i = 0; 1562 for (config = priv->screens[screen]->configs; config != NULL; 1563 config = config->next) { 1564 if (config->fbconfigID != (int) GLX_DONT_CARE) { 1565 config_list[i] = config; 1566 i++; 1567 } 1568 } 1569 } 1570 } 1571 1572 return (GLXFBConfig *) config_list; 1573} 1574 1575 1576_X_EXPORT int 1577glXGetFBConfigAttrib(Display * dpy, GLXFBConfig fbconfig, 1578 int attribute, int *value) 1579{ 1580 struct glx_config *config = ValidateGLXFBConfig(dpy, fbconfig); 1581 1582 if (config == NULL) 1583 return GLXBadFBConfig; 1584 1585 return glx_config_get(config, attribute, value); 1586} 1587 1588 1589_X_EXPORT XVisualInfo * 1590glXGetVisualFromFBConfig(Display * dpy, GLXFBConfig fbconfig) 1591{ 1592 XVisualInfo visualTemplate; 1593 struct glx_config *config = (struct glx_config *) fbconfig; 1594 int count; 1595 1596 /* 1597 ** Get a list of all visuals, return if list is empty 1598 */ 1599 visualTemplate.visualid = config->visualID; 1600 return XGetVisualInfo(dpy, VisualIDMask, &visualTemplate, &count); 1601} 1602 1603#ifndef GLX_USE_APPLEGL 1604/* 1605** GLX_SGI_swap_control 1606*/ 1607static int 1608__glXSwapIntervalSGI(int interval) 1609{ 1610 xGLXVendorPrivateReq *req; 1611 struct glx_context *gc = __glXGetCurrentContext(); 1612 struct glx_screen *psc; 1613 Display *dpy; 1614 CARD32 *interval_ptr; 1615 CARD8 opcode; 1616 1617 if (gc == NULL) { 1618 return GLX_BAD_CONTEXT; 1619 } 1620 1621 if (interval <= 0) { 1622 return GLX_BAD_VALUE; 1623 } 1624 1625 psc = GetGLXScreenConfigs( gc->currentDpy, gc->screen); 1626 1627#ifdef GLX_DIRECT_RENDERING 1628 if (gc->isDirect && psc->driScreen && psc->driScreen->setSwapInterval) { 1629 __GLXDRIdrawable *pdraw = 1630 GetGLXDRIDrawable(gc->currentDpy, gc->currentDrawable); 1631 psc->driScreen->setSwapInterval(pdraw, interval); 1632 return 0; 1633 } 1634#endif 1635 1636 dpy = gc->currentDpy; 1637 opcode = __glXSetupForCommand(dpy); 1638 if (!opcode) { 1639 return 0; 1640 } 1641 1642 /* Send the glXSwapIntervalSGI request */ 1643 LockDisplay(dpy); 1644 GetReqExtra(GLXVendorPrivate, sizeof(CARD32), req); 1645 req->reqType = opcode; 1646 req->glxCode = X_GLXVendorPrivate; 1647 req->vendorCode = X_GLXvop_SwapIntervalSGI; 1648 req->contextTag = gc->currentContextTag; 1649 1650 interval_ptr = (CARD32 *) (req + 1); 1651 *interval_ptr = interval; 1652 1653 UnlockDisplay(dpy); 1654 SyncHandle(); 1655 XFlush(dpy); 1656 1657 return 0; 1658} 1659 1660 1661/* 1662** GLX_MESA_swap_control 1663*/ 1664static int 1665__glXSwapIntervalMESA(unsigned int interval) 1666{ 1667#ifdef GLX_DIRECT_RENDERING 1668 struct glx_context *gc = __glXGetCurrentContext(); 1669 1670 if (gc != NULL && gc->isDirect) { 1671 struct glx_screen *psc; 1672 1673 psc = GetGLXScreenConfigs( gc->currentDpy, gc->screen); 1674 if (psc->driScreen && psc->driScreen->setSwapInterval) { 1675 __GLXDRIdrawable *pdraw = 1676 GetGLXDRIDrawable(gc->currentDpy, gc->currentDrawable); 1677 return psc->driScreen->setSwapInterval(pdraw, interval); 1678 } 1679 } 1680#endif 1681 1682 return GLX_BAD_CONTEXT; 1683} 1684 1685 1686static int 1687__glXGetSwapIntervalMESA(void) 1688{ 1689#ifdef GLX_DIRECT_RENDERING 1690 struct glx_context *gc = __glXGetCurrentContext(); 1691 1692 if (gc != NULL && gc->isDirect) { 1693 struct glx_screen *psc; 1694 1695 psc = GetGLXScreenConfigs( gc->currentDpy, gc->screen); 1696 if (psc->driScreen && psc->driScreen->getSwapInterval) { 1697 __GLXDRIdrawable *pdraw = 1698 GetGLXDRIDrawable(gc->currentDpy, gc->currentDrawable); 1699 return psc->driScreen->getSwapInterval(pdraw); 1700 } 1701 } 1702#endif 1703 1704 return 0; 1705} 1706 1707 1708/* 1709** GLX_SGI_video_sync 1710*/ 1711static int 1712__glXGetVideoSyncSGI(unsigned int *count) 1713{ 1714 int64_t ust, msc, sbc; 1715 int ret; 1716 struct glx_context *gc = __glXGetCurrentContext(); 1717 struct glx_screen *psc; 1718#ifdef GLX_DIRECT_RENDERING 1719 __GLXDRIdrawable *pdraw; 1720#endif 1721 1722 if (!gc) 1723 return GLX_BAD_CONTEXT; 1724 1725#ifdef GLX_DIRECT_RENDERING 1726 if (!gc->isDirect) 1727 return GLX_BAD_CONTEXT; 1728#endif 1729 1730 psc = GetGLXScreenConfigs(gc->currentDpy, gc->screen); 1731#ifdef GLX_DIRECT_RENDERING 1732 pdraw = GetGLXDRIDrawable(gc->currentDpy, gc->currentDrawable); 1733#endif 1734 1735 /* FIXME: Looking at the GLX_SGI_video_sync spec in the extension registry, 1736 * FIXME: there should be a GLX encoding for this call. I can find no 1737 * FIXME: documentation for the GLX encoding. 1738 */ 1739#ifdef GLX_DIRECT_RENDERING 1740 if (psc->driScreen && psc->driScreen->getDrawableMSC) { 1741 ret = psc->driScreen->getDrawableMSC(psc, pdraw, &ust, &msc, &sbc); 1742 *count = (unsigned) msc; 1743 return (ret == True) ? 0 : GLX_BAD_CONTEXT; 1744 } 1745#endif 1746 1747 return GLX_BAD_CONTEXT; 1748} 1749 1750static int 1751__glXWaitVideoSyncSGI(int divisor, int remainder, unsigned int *count) 1752{ 1753 struct glx_context *gc = __glXGetCurrentContext(); 1754 struct glx_screen *psc; 1755#ifdef GLX_DIRECT_RENDERING 1756 __GLXDRIdrawable *pdraw; 1757#endif 1758 int64_t ust, msc, sbc; 1759 int ret; 1760 1761 if (divisor <= 0 || remainder < 0) 1762 return GLX_BAD_VALUE; 1763 1764 if (!gc) 1765 return GLX_BAD_CONTEXT; 1766 1767#ifdef GLX_DIRECT_RENDERING 1768 if (!gc->isDirect) 1769 return GLX_BAD_CONTEXT; 1770#endif 1771 1772 psc = GetGLXScreenConfigs( gc->currentDpy, gc->screen); 1773#ifdef GLX_DIRECT_RENDERING 1774 pdraw = GetGLXDRIDrawable(gc->currentDpy, gc->currentDrawable); 1775#endif 1776 1777#ifdef GLX_DIRECT_RENDERING 1778 if (psc->driScreen && psc->driScreen->waitForMSC) { 1779 ret = psc->driScreen->waitForMSC(pdraw, 0, divisor, remainder, &ust, &msc, 1780 &sbc); 1781 *count = (unsigned) msc; 1782 return (ret == True) ? 0 : GLX_BAD_CONTEXT; 1783 } 1784#endif 1785 1786 return GLX_BAD_CONTEXT; 1787} 1788 1789#endif /* GLX_USE_APPLEGL */ 1790 1791/* 1792** GLX_SGIX_fbconfig 1793** Many of these functions are aliased to GLX 1.3 entry points in the 1794** GLX_functions table. 1795*/ 1796 1797_X_EXPORT 1798GLX_ALIAS(int, glXGetFBConfigAttribSGIX, 1799 (Display * dpy, GLXFBConfigSGIX config, int attribute, int *value), 1800 (dpy, config, attribute, value), glXGetFBConfigAttrib) 1801 1802_X_EXPORT GLX_ALIAS(GLXFBConfigSGIX *, glXChooseFBConfigSGIX, 1803 (Display * dpy, int screen, int *attrib_list, 1804 int *nelements), (dpy, screen, attrib_list, nelements), 1805 glXChooseFBConfig) 1806 1807_X_EXPORT GLX_ALIAS(XVisualInfo *, glXGetVisualFromFBConfigSGIX, 1808 (Display * dpy, GLXFBConfigSGIX config), 1809 (dpy, config), glXGetVisualFromFBConfig) 1810 1811_X_EXPORT GLXPixmap 1812glXCreateGLXPixmapWithConfigSGIX(Display * dpy, 1813 GLXFBConfigSGIX fbconfig, 1814 Pixmap pixmap) 1815{ 1816#ifndef GLX_USE_APPLEGL 1817 xGLXVendorPrivateWithReplyReq *vpreq; 1818 xGLXCreateGLXPixmapWithConfigSGIXReq *req; 1819 GLXPixmap xid = None; 1820 CARD8 opcode; 1821 struct glx_screen *psc; 1822#endif 1823 struct glx_config *config = (struct glx_config *) fbconfig; 1824 1825 1826 if ((dpy == NULL) || (config == NULL)) { 1827 return None; 1828 } 1829#ifdef GLX_USE_APPLEGL 1830 if(apple_glx_pixmap_create(dpy, config->screen, pixmap, config)) 1831 return None; 1832 return pixmap; 1833#else 1834 1835 psc = GetGLXScreenConfigs(dpy, config->screen); 1836 if ((psc != NULL) 1837 && __glXExtensionBitIsEnabled(psc, SGIX_fbconfig_bit)) { 1838 opcode = __glXSetupForCommand(dpy); 1839 if (!opcode) { 1840 return None; 1841 } 1842 1843 /* Send the glXCreateGLXPixmapWithConfigSGIX request */ 1844 LockDisplay(dpy); 1845 GetReqExtra(GLXVendorPrivateWithReply, 1846 sz_xGLXCreateGLXPixmapWithConfigSGIXReq - 1847 sz_xGLXVendorPrivateWithReplyReq, vpreq); 1848 req = (xGLXCreateGLXPixmapWithConfigSGIXReq *) vpreq; 1849 req->reqType = opcode; 1850 req->glxCode = X_GLXVendorPrivateWithReply; 1851 req->vendorCode = X_GLXvop_CreateGLXPixmapWithConfigSGIX; 1852 req->screen = config->screen; 1853 req->fbconfig = config->fbconfigID; 1854 req->pixmap = pixmap; 1855 req->glxpixmap = xid = XAllocID(dpy); 1856 UnlockDisplay(dpy); 1857 SyncHandle(); 1858 } 1859 1860 return xid; 1861#endif 1862} 1863 1864_X_EXPORT GLXContext 1865glXCreateContextWithConfigSGIX(Display * dpy, 1866 GLXFBConfigSGIX fbconfig, int renderType, 1867 GLXContext shareList, Bool allowDirect) 1868{ 1869 GLXContext gc = NULL; 1870 struct glx_config *config = (struct glx_config *) fbconfig; 1871 struct glx_screen *psc; 1872 1873 1874 if ((dpy == NULL) || (config == NULL)) { 1875 return None; 1876 } 1877 1878 psc = GetGLXScreenConfigs(dpy, config->screen); 1879 if ((psc != NULL) 1880 && __glXExtensionBitIsEnabled(psc, SGIX_fbconfig_bit)) { 1881 gc = CreateContext(dpy, config->fbconfigID, config, shareList, 1882 allowDirect, 1883 X_GLXvop_CreateContextWithConfigSGIX, renderType, 1884 config->screen); 1885 } 1886 1887 return gc; 1888} 1889 1890 1891_X_EXPORT GLXFBConfigSGIX 1892glXGetFBConfigFromVisualSGIX(Display * dpy, XVisualInfo * vis) 1893{ 1894 struct glx_display *priv; 1895 struct glx_screen *psc = NULL; 1896 1897 if ((GetGLXPrivScreenConfig(dpy, vis->screen, &priv, &psc) == Success) 1898 && __glXExtensionBitIsEnabled(psc, SGIX_fbconfig_bit) 1899 && (psc->configs->fbconfigID != (int) GLX_DONT_CARE)) { 1900 return (GLXFBConfigSGIX) glx_config_find_visual(psc->configs, 1901 vis->visualid); 1902 } 1903 1904 return NULL; 1905} 1906 1907#ifndef GLX_USE_APPLEGL 1908/* 1909** GLX_SGIX_swap_group 1910*/ 1911static void 1912__glXJoinSwapGroupSGIX(Display * dpy, GLXDrawable drawable, 1913 GLXDrawable member) 1914{ 1915 (void) dpy; 1916 (void) drawable; 1917 (void) member; 1918} 1919 1920 1921/* 1922** GLX_SGIX_swap_barrier 1923*/ 1924static void 1925__glXBindSwapBarrierSGIX(Display * dpy, GLXDrawable drawable, int barrier) 1926{ 1927 (void) dpy; 1928 (void) drawable; 1929 (void) barrier; 1930} 1931 1932static Bool 1933__glXQueryMaxSwapBarriersSGIX(Display * dpy, int screen, int *max) 1934{ 1935 (void) dpy; 1936 (void) screen; 1937 (void) max; 1938 return False; 1939} 1940 1941 1942/* 1943** GLX_OML_sync_control 1944*/ 1945static Bool 1946__glXGetSyncValuesOML(Display * dpy, GLXDrawable drawable, 1947 int64_t * ust, int64_t * msc, int64_t * sbc) 1948{ 1949 struct glx_display * const priv = __glXInitialize(dpy); 1950 int ret; 1951#ifdef GLX_DIRECT_RENDERING 1952 __GLXDRIdrawable *pdraw; 1953#endif 1954 struct glx_screen *psc; 1955 1956 if (!priv) 1957 return False; 1958 1959#ifdef GLX_DIRECT_RENDERING 1960 pdraw = GetGLXDRIDrawable(dpy, drawable); 1961 psc = pdraw ? pdraw->psc : NULL; 1962 if (pdraw && psc->driScreen->getDrawableMSC) { 1963 ret = psc->driScreen->getDrawableMSC(psc, pdraw, ust, msc, sbc); 1964 return ret; 1965 } 1966#endif 1967 1968 return False; 1969} 1970 1971#if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL) 1972_X_HIDDEN GLboolean 1973__glxGetMscRate(__GLXDRIdrawable *glxDraw, 1974 int32_t * numerator, int32_t * denominator) 1975{ 1976#ifdef XF86VIDMODE 1977 struct glx_screen *psc; 1978 XF86VidModeModeLine mode_line; 1979 int dot_clock; 1980 int i; 1981 1982 psc = glxDraw->psc; 1983 if (XF86VidModeQueryVersion(psc->dpy, &i, &i) && 1984 XF86VidModeGetModeLine(psc->dpy, psc->scr, &dot_clock, &mode_line)) { 1985 unsigned n = dot_clock * 1000; 1986 unsigned d = mode_line.vtotal * mode_line.htotal; 1987 1988# define V_INTERLACE 0x010 1989# define V_DBLSCAN 0x020 1990 1991 if (mode_line.flags & V_INTERLACE) 1992 n *= 2; 1993 else if (mode_line.flags & V_DBLSCAN) 1994 d *= 2; 1995 1996 /* The OML_sync_control spec requires that if the refresh rate is a 1997 * whole number, that the returned numerator be equal to the refresh 1998 * rate and the denominator be 1. 1999 */ 2000 2001 if (n % d == 0) { 2002 n /= d; 2003 d = 1; 2004 } 2005 else { 2006 static const unsigned f[] = { 13, 11, 7, 5, 3, 2, 0 }; 2007 2008 /* This is a poor man's way to reduce a fraction. It's far from 2009 * perfect, but it will work well enough for this situation. 2010 */ 2011 2012 for (i = 0; f[i] != 0; i++) { 2013 while (n % f[i] == 0 && d % f[i] == 0) { 2014 d /= f[i]; 2015 n /= f[i]; 2016 } 2017 } 2018 } 2019 2020 *numerator = n; 2021 *denominator = d; 2022 2023 return True; 2024 } 2025 else 2026#endif 2027 2028 return False; 2029} 2030#endif 2031 2032/** 2033 * Determine the refresh rate of the specified drawable and display. 2034 * 2035 * \param dpy Display whose refresh rate is to be determined. 2036 * \param drawable Drawable whose refresh rate is to be determined. 2037 * \param numerator Numerator of the refresh rate. 2038 * \param demoninator Denominator of the refresh rate. 2039 * \return If the refresh rate for the specified display and drawable could 2040 * be calculated, True is returned. Otherwise False is returned. 2041 * 2042 * \note This function is implemented entirely client-side. A lot of other 2043 * functionality is required to export GLX_OML_sync_control, so on 2044 * XFree86 this function can be called for direct-rendering contexts 2045 * when GLX_OML_sync_control appears in the client extension string. 2046 */ 2047 2048_X_HIDDEN GLboolean 2049__glXGetMscRateOML(Display * dpy, GLXDrawable drawable, 2050 int32_t * numerator, int32_t * denominator) 2051{ 2052#if defined( GLX_DIRECT_RENDERING ) && defined( XF86VIDMODE ) 2053 __GLXDRIdrawable *draw = GetGLXDRIDrawable(dpy, drawable); 2054 2055 if (draw == NULL) 2056 return False; 2057 2058 return __glxGetMscRate(draw, numerator, denominator); 2059#else 2060 (void) dpy; 2061 (void) drawable; 2062 (void) numerator; 2063 (void) denominator; 2064#endif 2065 return False; 2066} 2067 2068 2069static int64_t 2070__glXSwapBuffersMscOML(Display * dpy, GLXDrawable drawable, 2071 int64_t target_msc, int64_t divisor, int64_t remainder) 2072{ 2073 struct glx_context *gc = __glXGetCurrentContext(); 2074#ifdef GLX_DIRECT_RENDERING 2075 __GLXDRIdrawable *pdraw = GetGLXDRIDrawable(dpy, drawable); 2076 struct glx_screen *psc = pdraw ? pdraw->psc : NULL; 2077#endif 2078 2079 if (!gc) /* no GLX for this */ 2080 return -1; 2081 2082#ifdef GLX_DIRECT_RENDERING 2083 if (!pdraw || !gc->isDirect) 2084 return -1; 2085#endif 2086 2087 /* The OML_sync_control spec says these should "generate a GLX_BAD_VALUE 2088 * error", but it also says "It [glXSwapBuffersMscOML] will return a value 2089 * of -1 if the function failed because of errors detected in the input 2090 * parameters" 2091 */ 2092 if (divisor < 0 || remainder < 0 || target_msc < 0) 2093 return -1; 2094 if (divisor > 0 && remainder >= divisor) 2095 return -1; 2096 2097 if (target_msc == 0 && divisor == 0 && remainder == 0) 2098 remainder = 1; 2099 2100#ifdef GLX_DIRECT_RENDERING 2101 if (psc->driScreen && psc->driScreen->swapBuffers) 2102 return (*psc->driScreen->swapBuffers)(pdraw, target_msc, divisor, 2103 remainder); 2104#endif 2105 2106 return -1; 2107} 2108 2109 2110static Bool 2111__glXWaitForMscOML(Display * dpy, GLXDrawable drawable, 2112 int64_t target_msc, int64_t divisor, 2113 int64_t remainder, int64_t * ust, 2114 int64_t * msc, int64_t * sbc) 2115{ 2116#ifdef GLX_DIRECT_RENDERING 2117 __GLXDRIdrawable *pdraw = GetGLXDRIDrawable(dpy, drawable); 2118 struct glx_screen *psc = pdraw ? pdraw->psc : NULL; 2119 int ret; 2120#endif 2121 2122 2123 /* The OML_sync_control spec says these should "generate a GLX_BAD_VALUE 2124 * error", but the return type in the spec is Bool. 2125 */ 2126 if (divisor < 0 || remainder < 0 || target_msc < 0) 2127 return False; 2128 if (divisor > 0 && remainder >= divisor) 2129 return False; 2130 2131#ifdef GLX_DIRECT_RENDERING 2132 if (pdraw && psc->driScreen && psc->driScreen->waitForMSC) { 2133 ret = psc->driScreen->waitForMSC(pdraw, target_msc, divisor, remainder, 2134 ust, msc, sbc); 2135 return ret; 2136 } 2137#endif 2138 2139 return False; 2140} 2141 2142 2143static Bool 2144__glXWaitForSbcOML(Display * dpy, GLXDrawable drawable, 2145 int64_t target_sbc, int64_t * ust, 2146 int64_t * msc, int64_t * sbc) 2147{ 2148#ifdef GLX_DIRECT_RENDERING 2149 __GLXDRIdrawable *pdraw = GetGLXDRIDrawable(dpy, drawable); 2150 struct glx_screen *psc = pdraw ? pdraw->psc : NULL; 2151 int ret; 2152#endif 2153 2154 /* The OML_sync_control spec says this should "generate a GLX_BAD_VALUE 2155 * error", but the return type in the spec is Bool. 2156 */ 2157 if (target_sbc < 0) 2158 return False; 2159 2160#ifdef GLX_DIRECT_RENDERING 2161 if (pdraw && psc->driScreen && psc->driScreen->waitForSBC) { 2162 ret = psc->driScreen->waitForSBC(pdraw, target_sbc, ust, msc, sbc); 2163 return ret; 2164 } 2165#endif 2166 2167 return False; 2168} 2169 2170/*@}*/ 2171 2172 2173/** 2174 * Mesa extension stubs. These will help reduce portability problems. 2175 */ 2176/*@{*/ 2177 2178/** 2179 * Release all buffers associated with the specified GLX drawable. 2180 * 2181 * \todo 2182 * This function was intended for stand-alone Mesa. The issue there is that 2183 * the library doesn't get any notification when a window is closed. In 2184 * DRI there is a similar but slightly different issue. When GLX 1.3 is 2185 * supported, there are 3 different functions to destroy a drawable. It 2186 * should be possible to create GLX protocol (or have it determine which 2187 * protocol to use based on the type of the drawable) to have one function 2188 * do the work of 3. For the direct-rendering case, this function could 2189 * just call the driver's \c __DRIdrawableRec::destroyDrawable function. 2190 * This would reduce the frequency with which \c __driGarbageCollectDrawables 2191 * would need to be used. This really should be done as part of the new DRI 2192 * interface work. 2193 * 2194 * \sa http://oss.sgi.com/projects/ogl-sample/registry/MESA/release_buffers.txt 2195 * __driGarbageCollectDrawables 2196 * glXDestroyGLXPixmap 2197 * glXDestroyPbuffer glXDestroyPixmap glXDestroyWindow 2198 * glXDestroyGLXPbufferSGIX glXDestroyGLXVideoSourceSGIX 2199 */ 2200static Bool 2201__glXReleaseBuffersMESA(Display * dpy, GLXDrawable d) 2202{ 2203 (void) dpy; 2204 (void) d; 2205 return False; 2206} 2207 2208 2209_X_EXPORT GLXPixmap 2210glXCreateGLXPixmapMESA(Display * dpy, XVisualInfo * visual, 2211 Pixmap pixmap, Colormap cmap) 2212{ 2213 (void) dpy; 2214 (void) visual; 2215 (void) pixmap; 2216 (void) cmap; 2217 return 0; 2218} 2219 2220/*@}*/ 2221 2222 2223/** 2224 * GLX_MESA_copy_sub_buffer 2225 */ 2226#define X_GLXvop_CopySubBufferMESA 5154 /* temporary */ 2227static void 2228__glXCopySubBufferMESA(Display * dpy, GLXDrawable drawable, 2229 int x, int y, int width, int height) 2230{ 2231 xGLXVendorPrivateReq *req; 2232 struct glx_context *gc; 2233 GLXContextTag tag; 2234 CARD32 *drawable_ptr; 2235 INT32 *x_ptr, *y_ptr, *w_ptr, *h_ptr; 2236 CARD8 opcode; 2237 2238#if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL) 2239 __GLXDRIdrawable *pdraw = GetGLXDRIDrawable(dpy, drawable); 2240 if (pdraw != NULL) { 2241 struct glx_screen *psc = pdraw->psc; 2242 if (psc->driScreen->copySubBuffer != NULL) { 2243 glFlush(); 2244 (*psc->driScreen->copySubBuffer) (pdraw, x, y, width, height); 2245 } 2246 2247 return; 2248 } 2249#endif 2250 2251 opcode = __glXSetupForCommand(dpy); 2252 if (!opcode) 2253 return; 2254 2255 /* 2256 ** The calling thread may or may not have a current context. If it 2257 ** does, send the context tag so the server can do a flush. 2258 */ 2259 gc = __glXGetCurrentContext(); 2260 if ((gc != NULL) && (dpy == gc->currentDpy) && 2261 ((drawable == gc->currentDrawable) || 2262 (drawable == gc->currentReadable))) { 2263 tag = gc->currentContextTag; 2264 } 2265 else { 2266 tag = 0; 2267 } 2268 2269 LockDisplay(dpy); 2270 GetReqExtra(GLXVendorPrivate, sizeof(CARD32) + sizeof(INT32) * 4, req); 2271 req->reqType = opcode; 2272 req->glxCode = X_GLXVendorPrivate; 2273 req->vendorCode = X_GLXvop_CopySubBufferMESA; 2274 req->contextTag = tag; 2275 2276 drawable_ptr = (CARD32 *) (req + 1); 2277 x_ptr = (INT32 *) (drawable_ptr + 1); 2278 y_ptr = (INT32 *) (drawable_ptr + 2); 2279 w_ptr = (INT32 *) (drawable_ptr + 3); 2280 h_ptr = (INT32 *) (drawable_ptr + 4); 2281 2282 *drawable_ptr = drawable; 2283 *x_ptr = x; 2284 *y_ptr = y; 2285 *w_ptr = width; 2286 *h_ptr = height; 2287 2288 UnlockDisplay(dpy); 2289 SyncHandle(); 2290} 2291 2292/*@{*/ 2293static void 2294__glXBindTexImageEXT(Display * dpy, 2295 GLXDrawable drawable, int buffer, const int *attrib_list) 2296{ 2297 struct glx_context *gc = __glXGetCurrentContext(); 2298 2299 if (gc == NULL || gc->vtable->bind_tex_image == NULL) 2300 return; 2301 2302 gc->vtable->bind_tex_image(dpy, drawable, buffer, attrib_list); 2303} 2304 2305static void 2306__glXReleaseTexImageEXT(Display * dpy, GLXDrawable drawable, int buffer) 2307{ 2308 struct glx_context *gc = __glXGetCurrentContext(); 2309 2310 if (gc == NULL || gc->vtable->release_tex_image == NULL) 2311 return; 2312 2313 gc->vtable->release_tex_image(dpy, drawable, buffer); 2314} 2315 2316/*@}*/ 2317 2318#endif /* GLX_USE_APPLEGL */ 2319 2320/** 2321 * \c strdup is actually not a standard ANSI C or POSIX routine. 2322 * Irix will not define it if ANSI mode is in effect. 2323 * 2324 * \sa strdup 2325 */ 2326_X_HIDDEN char * 2327__glXstrdup(const char *str) 2328{ 2329 char *copy; 2330 copy = (char *) Xmalloc(strlen(str) + 1); 2331 if (!copy) 2332 return NULL; 2333 strcpy(copy, str); 2334 return copy; 2335} 2336 2337/* 2338** glXGetProcAddress support 2339*/ 2340 2341struct name_address_pair 2342{ 2343 const char *Name; 2344 GLvoid *Address; 2345}; 2346 2347#define GLX_FUNCTION(f) { # f, (GLvoid *) f } 2348#define GLX_FUNCTION2(n,f) { # n, (GLvoid *) f } 2349 2350static const struct name_address_pair GLX_functions[] = { 2351 /*** GLX_VERSION_1_0 ***/ 2352 GLX_FUNCTION(glXChooseVisual), 2353 GLX_FUNCTION(glXCopyContext), 2354 GLX_FUNCTION(glXCreateContext), 2355 GLX_FUNCTION(glXCreateGLXPixmap), 2356 GLX_FUNCTION(glXDestroyContext), 2357 GLX_FUNCTION(glXDestroyGLXPixmap), 2358 GLX_FUNCTION(glXGetConfig), 2359 GLX_FUNCTION(glXGetCurrentContext), 2360 GLX_FUNCTION(glXGetCurrentDrawable), 2361 GLX_FUNCTION(glXIsDirect), 2362 GLX_FUNCTION(glXMakeCurrent), 2363 GLX_FUNCTION(glXQueryExtension), 2364 GLX_FUNCTION(glXQueryVersion), 2365 GLX_FUNCTION(glXSwapBuffers), 2366 GLX_FUNCTION(glXUseXFont), 2367 GLX_FUNCTION(glXWaitGL), 2368 GLX_FUNCTION(glXWaitX), 2369 2370 /*** GLX_VERSION_1_1 ***/ 2371 GLX_FUNCTION(glXGetClientString), 2372 GLX_FUNCTION(glXQueryExtensionsString), 2373 GLX_FUNCTION(glXQueryServerString), 2374 2375 /*** GLX_VERSION_1_2 ***/ 2376 GLX_FUNCTION(glXGetCurrentDisplay), 2377 2378 /*** GLX_VERSION_1_3 ***/ 2379 GLX_FUNCTION(glXChooseFBConfig), 2380 GLX_FUNCTION(glXCreateNewContext), 2381 GLX_FUNCTION(glXCreatePbuffer), 2382 GLX_FUNCTION(glXCreatePixmap), 2383 GLX_FUNCTION(glXCreateWindow), 2384 GLX_FUNCTION(glXDestroyPbuffer), 2385 GLX_FUNCTION(glXDestroyPixmap), 2386 GLX_FUNCTION(glXDestroyWindow), 2387 GLX_FUNCTION(glXGetCurrentReadDrawable), 2388 GLX_FUNCTION(glXGetFBConfigAttrib), 2389 GLX_FUNCTION(glXGetFBConfigs), 2390 GLX_FUNCTION(glXGetSelectedEvent), 2391 GLX_FUNCTION(glXGetVisualFromFBConfig), 2392 GLX_FUNCTION(glXMakeContextCurrent), 2393 GLX_FUNCTION(glXQueryContext), 2394 GLX_FUNCTION(glXQueryDrawable), 2395 GLX_FUNCTION(glXSelectEvent), 2396 2397#ifndef GLX_USE_APPLEGL 2398 /*** GLX_SGI_swap_control ***/ 2399 GLX_FUNCTION2(glXSwapIntervalSGI, __glXSwapIntervalSGI), 2400 2401 /*** GLX_SGI_video_sync ***/ 2402 GLX_FUNCTION2(glXGetVideoSyncSGI, __glXGetVideoSyncSGI), 2403 GLX_FUNCTION2(glXWaitVideoSyncSGI, __glXWaitVideoSyncSGI), 2404 2405 /*** GLX_SGI_make_current_read ***/ 2406 GLX_FUNCTION2(glXMakeCurrentReadSGI, glXMakeContextCurrent), 2407 GLX_FUNCTION2(glXGetCurrentReadDrawableSGI, glXGetCurrentReadDrawable), 2408 2409 /*** GLX_EXT_import_context ***/ 2410 GLX_FUNCTION(glXFreeContextEXT), 2411 GLX_FUNCTION(glXGetContextIDEXT), 2412 GLX_FUNCTION2(glXGetCurrentDisplayEXT, glXGetCurrentDisplay), 2413 GLX_FUNCTION(glXImportContextEXT), 2414 GLX_FUNCTION2(glXQueryContextInfoEXT, glXQueryContext), 2415#endif 2416 2417 /*** GLX_SGIX_fbconfig ***/ 2418 GLX_FUNCTION2(glXGetFBConfigAttribSGIX, glXGetFBConfigAttrib), 2419 GLX_FUNCTION2(glXChooseFBConfigSGIX, glXChooseFBConfig), 2420 GLX_FUNCTION(glXCreateGLXPixmapWithConfigSGIX), 2421 GLX_FUNCTION(glXCreateContextWithConfigSGIX), 2422 GLX_FUNCTION2(glXGetVisualFromFBConfigSGIX, glXGetVisualFromFBConfig), 2423 GLX_FUNCTION(glXGetFBConfigFromVisualSGIX), 2424 2425#ifndef GLX_USE_APPLEGL 2426 /*** GLX_SGIX_pbuffer ***/ 2427 GLX_FUNCTION(glXCreateGLXPbufferSGIX), 2428 GLX_FUNCTION(glXDestroyGLXPbufferSGIX), 2429 GLX_FUNCTION(glXQueryGLXPbufferSGIX), 2430 GLX_FUNCTION(glXSelectEventSGIX), 2431 GLX_FUNCTION(glXGetSelectedEventSGIX), 2432 2433 /*** GLX_SGIX_swap_group ***/ 2434 GLX_FUNCTION2(glXJoinSwapGroupSGIX, __glXJoinSwapGroupSGIX), 2435 2436 /*** GLX_SGIX_swap_barrier ***/ 2437 GLX_FUNCTION2(glXBindSwapBarrierSGIX, __glXBindSwapBarrierSGIX), 2438 GLX_FUNCTION2(glXQueryMaxSwapBarriersSGIX, __glXQueryMaxSwapBarriersSGIX), 2439 2440 /*** GLX_MESA_copy_sub_buffer ***/ 2441 GLX_FUNCTION2(glXCopySubBufferMESA, __glXCopySubBufferMESA), 2442 2443 /*** GLX_MESA_pixmap_colormap ***/ 2444 GLX_FUNCTION(glXCreateGLXPixmapMESA), 2445 2446 /*** GLX_MESA_release_buffers ***/ 2447 GLX_FUNCTION2(glXReleaseBuffersMESA, __glXReleaseBuffersMESA), 2448 2449 /*** GLX_MESA_swap_control ***/ 2450 GLX_FUNCTION2(glXSwapIntervalMESA, __glXSwapIntervalMESA), 2451 GLX_FUNCTION2(glXGetSwapIntervalMESA, __glXGetSwapIntervalMESA), 2452#endif 2453 2454 /*** GLX_ARB_get_proc_address ***/ 2455 GLX_FUNCTION(glXGetProcAddressARB), 2456 2457 /*** GLX 1.4 ***/ 2458 GLX_FUNCTION2(glXGetProcAddress, glXGetProcAddressARB), 2459 2460#ifndef GLX_USE_APPLEGL 2461 /*** GLX_OML_sync_control ***/ 2462 GLX_FUNCTION2(glXWaitForSbcOML, __glXWaitForSbcOML), 2463 GLX_FUNCTION2(glXWaitForMscOML, __glXWaitForMscOML), 2464 GLX_FUNCTION2(glXSwapBuffersMscOML, __glXSwapBuffersMscOML), 2465 GLX_FUNCTION2(glXGetMscRateOML, __glXGetMscRateOML), 2466 GLX_FUNCTION2(glXGetSyncValuesOML, __glXGetSyncValuesOML), 2467 2468 /*** GLX_EXT_texture_from_pixmap ***/ 2469 GLX_FUNCTION2(glXBindTexImageEXT, __glXBindTexImageEXT), 2470 GLX_FUNCTION2(glXReleaseTexImageEXT, __glXReleaseTexImageEXT), 2471#endif 2472 2473#if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL) 2474 /*** DRI configuration ***/ 2475 GLX_FUNCTION(glXGetScreenDriver), 2476 GLX_FUNCTION(glXGetDriverConfig), 2477#endif 2478 2479 {NULL, NULL} /* end of list */ 2480}; 2481 2482static const GLvoid * 2483get_glx_proc_address(const char *funcName) 2484{ 2485 GLuint i; 2486 2487 /* try static functions */ 2488 for (i = 0; GLX_functions[i].Name; i++) { 2489 if (strcmp(GLX_functions[i].Name, funcName) == 0) 2490 return GLX_functions[i].Address; 2491 } 2492 2493 return NULL; 2494} 2495 2496/** 2497 * Get the address of a named GL function. This is the pre-GLX 1.4 name for 2498 * \c glXGetProcAddress. 2499 * 2500 * \param procName Name of a GL or GLX function. 2501 * \returns A pointer to the named function 2502 * 2503 * \sa glXGetProcAddress 2504 */ 2505_X_EXPORT void (*glXGetProcAddressARB(const GLubyte * procName)) (void) 2506{ 2507 typedef void (*gl_function) (void); 2508 gl_function f; 2509 2510 2511 /* Search the table of GLX and internal functions first. If that 2512 * fails and the supplied name could be a valid core GL name, try 2513 * searching the core GL function table. This check is done to prevent 2514 * DRI based drivers from searching the core GL function table for 2515 * internal API functions. 2516 */ 2517 f = (gl_function) get_glx_proc_address((const char *) procName); 2518 if ((f == NULL) && (procName[0] == 'g') && (procName[1] == 'l') 2519 && (procName[2] != 'X')) { 2520#ifdef GLX_SHARED_GLAPI 2521 f = (gl_function) __indirect_get_proc_address((const char *) procName); 2522#endif 2523 if (!f) 2524 f = (gl_function) _glapi_get_proc_address((const char *) procName); 2525 } 2526 return f; 2527} 2528 2529/** 2530 * Get the address of a named GL function. This is the GLX 1.4 name for 2531 * \c glXGetProcAddressARB. 2532 * 2533 * \param procName Name of a GL or GLX function. 2534 * \returns A pointer to the named function 2535 * 2536 * \sa glXGetProcAddressARB 2537 */ 2538_X_EXPORT void (*glXGetProcAddress(const GLubyte * procName)) (void) 2539#if defined(__GNUC__) && !defined(GLX_ALIAS_UNSUPPORTED) 2540 __attribute__ ((alias("glXGetProcAddressARB"))); 2541#else 2542{ 2543 return glXGetProcAddressARB(procName); 2544} 2545#endif /* __GNUC__ */ 2546 2547 2548#if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL) 2549/** 2550 * Get the unadjusted system time (UST). Currently, the UST is measured in 2551 * microseconds since Epoc. The actual resolution of the UST may vary from 2552 * system to system, and the units may vary from release to release. 2553 * Drivers should not call this function directly. They should instead use 2554 * \c glXGetProcAddress to obtain a pointer to the function. 2555 * 2556 * \param ust Location to store the 64-bit UST 2557 * \returns Zero on success or a negative errno value on failure. 2558 * 2559 * \sa glXGetProcAddress, PFNGLXGETUSTPROC 2560 * 2561 * \since Internal API version 20030317. 2562 */ 2563_X_HIDDEN int 2564__glXGetUST(int64_t * ust) 2565{ 2566 struct timeval tv; 2567 2568 if (ust == NULL) { 2569 return -EFAULT; 2570 } 2571 2572 if (gettimeofday(&tv, NULL) == 0) { 2573 ust[0] = (tv.tv_sec * 1000000) + tv.tv_usec; 2574 return 0; 2575 } 2576 else { 2577 return -errno; 2578 } 2579} 2580#endif /* GLX_DIRECT_RENDERING */ 2581