glxcmds.c revision 9e2bc5d4b0385e374e06c0b26db266067a723bf3
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*/ 357 358_X_EXPORT void 359glXDestroyContext(Display * dpy, GLXContext ctx) 360{ 361 struct glx_context *gc = (struct glx_context *) ctx; 362 363 if (!gc) 364 return; 365 366 __glXLock(); 367 if (gc->currentDpy) { 368 /* This context is bound to some thread. According to the man page, 369 * we should not actually delete the context until it's unbound. 370 * Note that we set gc->xid = None above. In MakeContextCurrent() 371 * we check for that and delete the context there. 372 */ 373 if (!gc->imported) 374 glx_send_destroy_context(dpy, gc->xid); 375 gc->xid = None; 376 __glXUnlock(); 377 return; 378 } 379 __glXUnlock(); 380 381 gc->vtable->destroy(gc); 382} 383 384/* 385** Return the major and minor version #s for the GLX extension 386*/ 387_X_EXPORT Bool 388glXQueryVersion(Display * dpy, int *major, int *minor) 389{ 390 struct glx_display *priv; 391 392 /* Init the extension. This fetches the major and minor version. */ 393 priv = __glXInitialize(dpy); 394 if (!priv) 395 return GL_FALSE; 396 397 if (major) 398 *major = priv->majorVersion; 399 if (minor) 400 *minor = priv->minorVersion; 401 return GL_TRUE; 402} 403 404/* 405** Query the existance of the GLX extension 406*/ 407_X_EXPORT Bool 408glXQueryExtension(Display * dpy, int *errorBase, int *eventBase) 409{ 410 int major_op, erb, evb; 411 Bool rv; 412 413 rv = XQueryExtension(dpy, GLX_EXTENSION_NAME, &major_op, &evb, &erb); 414 if (rv) { 415 if (errorBase) 416 *errorBase = erb; 417 if (eventBase) 418 *eventBase = evb; 419 } 420 return rv; 421} 422 423/* 424** Put a barrier in the token stream that forces the GL to finish its 425** work before X can proceed. 426*/ 427_X_EXPORT void 428glXWaitGL(void) 429{ 430 struct glx_context *gc = __glXGetCurrentContext(); 431 432 if (gc && gc->vtable->wait_gl) 433 gc->vtable->wait_gl(gc); 434} 435 436/* 437** Put a barrier in the token stream that forces X to finish its 438** work before GL can proceed. 439*/ 440_X_EXPORT void 441glXWaitX(void) 442{ 443 struct glx_context *gc = __glXGetCurrentContext(); 444 445 if (gc && gc->vtable->wait_x) 446 gc->vtable->wait_x(gc); 447} 448 449_X_EXPORT void 450glXUseXFont(Font font, int first, int count, int listBase) 451{ 452 struct glx_context *gc = __glXGetCurrentContext(); 453 454 if (gc && gc->vtable->use_x_font) 455 gc->vtable->use_x_font(gc, font, first, count, listBase); 456} 457 458/************************************************************************/ 459 460/* 461** Copy the source context to the destination context using the 462** attribute "mask". 463*/ 464_X_EXPORT void 465glXCopyContext(Display * dpy, GLXContext source_user, 466 GLXContext dest_user, unsigned long mask) 467{ 468 struct glx_context *source = (struct glx_context *) source_user; 469 struct glx_context *dest = (struct glx_context *) dest_user; 470#ifdef GLX_USE_APPLEGL 471 struct glx_context *gc = __glXGetCurrentContext(); 472 int errorcode; 473 bool x11error; 474 475 if(apple_glx_copy_context(gc->driContext, source->driContext, dest->driContext, 476 mask, &errorcode, &x11error)) { 477 __glXSendError(dpy, errorcode, 0, X_GLXCopyContext, x11error); 478 } 479 480#else 481 xGLXCopyContextReq *req; 482 struct glx_context *gc = __glXGetCurrentContext(); 483 GLXContextTag tag; 484 CARD8 opcode; 485 486 opcode = __glXSetupForCommand(dpy); 487 if (!opcode) { 488 return; 489 } 490 491#if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL) 492 if (gc->isDirect) { 493 /* NOT_DONE: This does not work yet */ 494 } 495#endif 496 497 /* 498 ** If the source is the current context, send its tag so that the context 499 ** can be flushed before the copy. 500 */ 501 if (source == gc && dpy == gc->currentDpy) { 502 tag = gc->currentContextTag; 503 } 504 else { 505 tag = 0; 506 } 507 508 /* Send the glXCopyContext request */ 509 LockDisplay(dpy); 510 GetReq(GLXCopyContext, req); 511 req->reqType = opcode; 512 req->glxCode = X_GLXCopyContext; 513 req->source = source ? source->xid : None; 514 req->dest = dest ? dest->xid : None; 515 req->mask = mask; 516 req->contextTag = tag; 517 UnlockDisplay(dpy); 518 SyncHandle(); 519#endif /* GLX_USE_APPLEGL */ 520} 521 522 523/** 524 * Determine if a context uses direct rendering. 525 * 526 * \param dpy Display where the context was created. 527 * \param contextID ID of the context to be tested. 528 * 529 * \returns \c GL_TRUE if the context is direct rendering or not. 530 */ 531static Bool 532__glXIsDirect(Display * dpy, GLXContextID contextID) 533{ 534#if !defined(USE_XCB) 535 xGLXIsDirectReq *req; 536 xGLXIsDirectReply reply; 537#endif 538 CARD8 opcode; 539 540 opcode = __glXSetupForCommand(dpy); 541 if (!opcode) { 542 return GL_FALSE; 543 } 544 545#ifdef USE_XCB 546 xcb_connection_t *c = XGetXCBConnection(dpy); 547 xcb_glx_is_direct_reply_t *reply = xcb_glx_is_direct_reply(c, 548 xcb_glx_is_direct 549 (c, contextID), 550 NULL); 551 552 const Bool is_direct = reply->is_direct ? True : False; 553 free(reply); 554 555 return is_direct; 556#else 557 /* Send the glXIsDirect request */ 558 LockDisplay(dpy); 559 GetReq(GLXIsDirect, req); 560 req->reqType = opcode; 561 req->glxCode = X_GLXIsDirect; 562 req->context = contextID; 563 _XReply(dpy, (xReply *) & reply, 0, False); 564 UnlockDisplay(dpy); 565 SyncHandle(); 566 567 return reply.isDirect; 568#endif /* USE_XCB */ 569} 570 571/** 572 * \todo 573 * Shouldn't this function \b always return \c GL_FALSE when 574 * \c GLX_DIRECT_RENDERING is not defined? Do we really need to bother with 575 * the GLX protocol here at all? 576 */ 577_X_EXPORT Bool 578glXIsDirect(Display * dpy, GLXContext gc_user) 579{ 580 struct glx_context *gc = (struct glx_context *) gc_user; 581 582 if (!gc) { 583 return GL_FALSE; 584 } 585 else if (gc->isDirect) { 586 return GL_TRUE; 587 } 588#ifdef GLX_USE_APPLEGL /* TODO: indirect on darwin */ 589 return GL_FALSE; 590#else 591 return __glXIsDirect(dpy, gc->xid); 592#endif 593} 594 595_X_EXPORT GLXPixmap 596glXCreateGLXPixmap(Display * dpy, XVisualInfo * vis, Pixmap pixmap) 597{ 598#ifdef GLX_USE_APPLEGL 599 int screen = vis->screen; 600 struct glx_screen *const psc = GetGLXScreenConfigs(dpy, screen); 601 const struct glx_config *config; 602 603 config = glx_config_find_visual(psc->visuals, vis->visualid); 604 605 if(apple_glx_pixmap_create(dpy, vis->screen, pixmap, config)) 606 return None; 607 608 return pixmap; 609#else 610 xGLXCreateGLXPixmapReq *req; 611 GLXPixmap xid; 612 CARD8 opcode; 613 614 opcode = __glXSetupForCommand(dpy); 615 if (!opcode) { 616 return None; 617 } 618 619 /* Send the glXCreateGLXPixmap request */ 620 LockDisplay(dpy); 621 GetReq(GLXCreateGLXPixmap, req); 622 req->reqType = opcode; 623 req->glxCode = X_GLXCreateGLXPixmap; 624 req->screen = vis->screen; 625 req->visual = vis->visualid; 626 req->pixmap = pixmap; 627 req->glxpixmap = xid = XAllocID(dpy); 628 UnlockDisplay(dpy); 629 SyncHandle(); 630 631#if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL) 632 do { 633 /* FIXME: Maybe delay __DRIdrawable creation until the drawable 634 * is actually bound to a context... */ 635 636 struct glx_display *const priv = __glXInitialize(dpy); 637 __GLXDRIdrawable *pdraw; 638 struct glx_screen *psc; 639 struct glx_config *config; 640 641 psc = priv->screens[vis->screen]; 642 if (psc->driScreen == NULL) 643 break; 644 config = glx_config_find_visual(psc->visuals, vis->visualid); 645 pdraw = psc->driScreen->createDrawable(psc, pixmap, xid, config); 646 if (pdraw == NULL) { 647 fprintf(stderr, "failed to create pixmap\n"); 648 break; 649 } 650 651 if (__glxHashInsert(priv->drawHash, xid, pdraw)) { 652 (*pdraw->destroyDrawable) (pdraw); 653 return None; /* FIXME: Check what we're supposed to do here... */ 654 } 655 } while (0); 656#endif 657 658 return xid; 659#endif 660} 661 662/* 663** Destroy the named pixmap 664*/ 665_X_EXPORT void 666glXDestroyGLXPixmap(Display * dpy, GLXPixmap glxpixmap) 667{ 668#ifdef GLX_USE_APPLEGL 669 if(apple_glx_pixmap_destroy(dpy, glxpixmap)) 670 __glXSendError(dpy, GLXBadPixmap, glxpixmap, X_GLXDestroyPixmap, false); 671#else 672 xGLXDestroyGLXPixmapReq *req; 673 CARD8 opcode; 674 675 opcode = __glXSetupForCommand(dpy); 676 if (!opcode) { 677 return; 678 } 679 680 /* Send the glXDestroyGLXPixmap request */ 681 LockDisplay(dpy); 682 GetReq(GLXDestroyGLXPixmap, req); 683 req->reqType = opcode; 684 req->glxCode = X_GLXDestroyGLXPixmap; 685 req->glxpixmap = glxpixmap; 686 UnlockDisplay(dpy); 687 SyncHandle(); 688 689#if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL) 690 { 691 struct glx_display *const priv = __glXInitialize(dpy); 692 __GLXDRIdrawable *pdraw = GetGLXDRIDrawable(dpy, glxpixmap); 693 694 if (pdraw != NULL) { 695 (*pdraw->destroyDrawable) (pdraw); 696 __glxHashDelete(priv->drawHash, glxpixmap); 697 } 698 } 699#endif 700#endif /* GLX_USE_APPLEGL */ 701} 702 703_X_EXPORT void 704glXSwapBuffers(Display * dpy, GLXDrawable drawable) 705{ 706#ifdef GLX_USE_APPLEGL 707 struct glx_context * gc = __glXGetCurrentContext(); 708 if(gc && apple_glx_is_current_drawable(dpy, gc->driContext, drawable)) { 709 apple_glx_swap_buffers(gc->driContext); 710 } else { 711 __glXSendError(dpy, GLXBadCurrentWindow, 0, X_GLXSwapBuffers, false); 712 } 713#else 714 struct glx_context *gc; 715 GLXContextTag tag; 716 CARD8 opcode; 717#ifdef USE_XCB 718 xcb_connection_t *c; 719#else 720 xGLXSwapBuffersReq *req; 721#endif 722 723 gc = __glXGetCurrentContext(); 724 725#if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL) 726 __GLXDRIdrawable *pdraw = GetGLXDRIDrawable(dpy, drawable); 727 728 if (pdraw != NULL) { 729 if (gc && drawable == gc->currentDrawable) { 730 glFlush(); 731 } 732 733 (*pdraw->psc->driScreen->swapBuffers)(pdraw, 0, 0, 0); 734 return; 735 } 736#endif 737 738 opcode = __glXSetupForCommand(dpy); 739 if (!opcode) { 740 return; 741 } 742 743 /* 744 ** The calling thread may or may not have a current context. If it 745 ** does, send the context tag so the server can do a flush. 746 */ 747 if ((gc != NULL) && (dpy == gc->currentDpy) && 748 ((drawable == gc->currentDrawable) 749 || (drawable == gc->currentReadable))) { 750 tag = gc->currentContextTag; 751 } 752 else { 753 tag = 0; 754 } 755 756#ifdef USE_XCB 757 c = XGetXCBConnection(dpy); 758 xcb_glx_swap_buffers(c, tag, drawable); 759 xcb_flush(c); 760#else 761 /* Send the glXSwapBuffers request */ 762 LockDisplay(dpy); 763 GetReq(GLXSwapBuffers, req); 764 req->reqType = opcode; 765 req->glxCode = X_GLXSwapBuffers; 766 req->drawable = drawable; 767 req->contextTag = tag; 768 UnlockDisplay(dpy); 769 SyncHandle(); 770 XFlush(dpy); 771#endif /* USE_XCB */ 772#endif /* GLX_USE_APPLEGL */ 773} 774 775 776/* 777** Return configuration information for the given display, screen and 778** visual combination. 779*/ 780_X_EXPORT int 781glXGetConfig(Display * dpy, XVisualInfo * vis, int attribute, 782 int *value_return) 783{ 784 struct glx_display *priv; 785 struct glx_screen *psc; 786 struct glx_config *config; 787 int status; 788 789 status = GetGLXPrivScreenConfig(dpy, vis->screen, &priv, &psc); 790 if (status == Success) { 791 config = glx_config_find_visual(psc->visuals, vis->visualid); 792 793 /* Lookup attribute after first finding a match on the visual */ 794 if (config != NULL) { 795 return glx_config_get(config, attribute, value_return); 796 } 797 798 status = GLX_BAD_VISUAL; 799 } 800 801 /* 802 ** If we can't find the config for this visual, this visual is not 803 ** supported by the OpenGL implementation on the server. 804 */ 805 if ((status == GLX_BAD_VISUAL) && (attribute == GLX_USE_GL)) { 806 *value_return = GL_FALSE; 807 status = Success; 808 } 809 810 return status; 811} 812 813/************************************************************************/ 814 815static void 816init_fbconfig_for_chooser(struct glx_config * config, 817 GLboolean fbconfig_style_tags) 818{ 819 memset(config, 0, sizeof(struct glx_config)); 820 config->visualID = (XID) GLX_DONT_CARE; 821 config->visualType = GLX_DONT_CARE; 822 823 /* glXChooseFBConfig specifies different defaults for these two than 824 * glXChooseVisual. 825 */ 826 if (fbconfig_style_tags) { 827 config->rgbMode = GL_TRUE; 828 config->doubleBufferMode = GLX_DONT_CARE; 829 } 830 831 config->visualRating = GLX_DONT_CARE; 832 config->transparentPixel = GLX_NONE; 833 config->transparentRed = GLX_DONT_CARE; 834 config->transparentGreen = GLX_DONT_CARE; 835 config->transparentBlue = GLX_DONT_CARE; 836 config->transparentAlpha = GLX_DONT_CARE; 837 config->transparentIndex = GLX_DONT_CARE; 838 839 config->drawableType = GLX_WINDOW_BIT; 840 config->renderType = 841 (config->rgbMode) ? GLX_RGBA_BIT : GLX_COLOR_INDEX_BIT; 842 config->xRenderable = GLX_DONT_CARE; 843 config->fbconfigID = (GLXFBConfigID) (GLX_DONT_CARE); 844 845 config->swapMethod = GLX_DONT_CARE; 846} 847 848#define MATCH_DONT_CARE( param ) \ 849 do { \ 850 if ( ((int) a-> param != (int) GLX_DONT_CARE) \ 851 && (a-> param != b-> param) ) { \ 852 return False; \ 853 } \ 854 } while ( 0 ) 855 856#define MATCH_MINIMUM( param ) \ 857 do { \ 858 if ( ((int) a-> param != (int) GLX_DONT_CARE) \ 859 && (a-> param > b-> param) ) { \ 860 return False; \ 861 } \ 862 } while ( 0 ) 863 864#define MATCH_EXACT( param ) \ 865 do { \ 866 if ( a-> param != b-> param) { \ 867 return False; \ 868 } \ 869 } while ( 0 ) 870 871/* Test that all bits from a are contained in b */ 872#define MATCH_MASK(param) \ 873 do { \ 874 if ((a->param & ~b->param) != 0) \ 875 return False; \ 876 } while (0); 877 878/** 879 * Determine if two GLXFBConfigs are compatible. 880 * 881 * \param a Application specified config to test. 882 * \param b Server specified config to test against \c a. 883 */ 884static Bool 885fbconfigs_compatible(const struct glx_config * const a, 886 const struct glx_config * const b) 887{ 888 MATCH_DONT_CARE(doubleBufferMode); 889 MATCH_DONT_CARE(visualType); 890 MATCH_DONT_CARE(visualRating); 891 MATCH_DONT_CARE(xRenderable); 892 MATCH_DONT_CARE(fbconfigID); 893 MATCH_DONT_CARE(swapMethod); 894 895 MATCH_MINIMUM(rgbBits); 896 MATCH_MINIMUM(numAuxBuffers); 897 MATCH_MINIMUM(redBits); 898 MATCH_MINIMUM(greenBits); 899 MATCH_MINIMUM(blueBits); 900 MATCH_MINIMUM(alphaBits); 901 MATCH_MINIMUM(depthBits); 902 MATCH_MINIMUM(stencilBits); 903 MATCH_MINIMUM(accumRedBits); 904 MATCH_MINIMUM(accumGreenBits); 905 MATCH_MINIMUM(accumBlueBits); 906 MATCH_MINIMUM(accumAlphaBits); 907 MATCH_MINIMUM(sampleBuffers); 908 MATCH_MINIMUM(maxPbufferWidth); 909 MATCH_MINIMUM(maxPbufferHeight); 910 MATCH_MINIMUM(maxPbufferPixels); 911 MATCH_MINIMUM(samples); 912 913 MATCH_DONT_CARE(stereoMode); 914 MATCH_EXACT(level); 915 916 MATCH_MASK(drawableType); 917 MATCH_MASK(renderType); 918 919 /* There is a bug in a few of the XFree86 DDX drivers. They contain 920 * visuals with a "transparent type" of 0 when they really mean GLX_NONE. 921 * Technically speaking, it is a bug in the DDX driver, but there is 922 * enough of an installed base to work around the problem here. In any 923 * case, 0 is not a valid value of the transparent type, so we'll treat 0 924 * from the app as GLX_DONT_CARE. We'll consider GLX_NONE from the app and 925 * 0 from the server to be a match to maintain backward compatibility with 926 * the (broken) drivers. 927 */ 928 929 if (a->transparentPixel != (int) GLX_DONT_CARE && a->transparentPixel != 0) { 930 if (a->transparentPixel == GLX_NONE) { 931 if (b->transparentPixel != GLX_NONE && b->transparentPixel != 0) 932 return False; 933 } 934 else { 935 MATCH_EXACT(transparentPixel); 936 } 937 938 switch (a->transparentPixel) { 939 case GLX_TRANSPARENT_RGB: 940 MATCH_DONT_CARE(transparentRed); 941 MATCH_DONT_CARE(transparentGreen); 942 MATCH_DONT_CARE(transparentBlue); 943 MATCH_DONT_CARE(transparentAlpha); 944 break; 945 946 case GLX_TRANSPARENT_INDEX: 947 MATCH_DONT_CARE(transparentIndex); 948 break; 949 950 default: 951 break; 952 } 953 } 954 955 return True; 956} 957 958 959/* There's some trickly language in the GLX spec about how this is supposed 960 * to work. Basically, if a given component size is either not specified 961 * or the requested size is zero, it is supposed to act like PERFER_SMALLER. 962 * Well, that's really hard to do with the code as-is. This behavior is 963 * closer to correct, but still not technically right. 964 */ 965#define PREFER_LARGER_OR_ZERO(comp) \ 966 do { \ 967 if ( ((*a)-> comp) != ((*b)-> comp) ) { \ 968 if ( ((*a)-> comp) == 0 ) { \ 969 return -1; \ 970 } \ 971 else if ( ((*b)-> comp) == 0 ) { \ 972 return 1; \ 973 } \ 974 else { \ 975 return ((*b)-> comp) - ((*a)-> comp) ; \ 976 } \ 977 } \ 978 } while( 0 ) 979 980#define PREFER_LARGER(comp) \ 981 do { \ 982 if ( ((*a)-> comp) != ((*b)-> comp) ) { \ 983 return ((*b)-> comp) - ((*a)-> comp) ; \ 984 } \ 985 } while( 0 ) 986 987#define PREFER_SMALLER(comp) \ 988 do { \ 989 if ( ((*a)-> comp) != ((*b)-> comp) ) { \ 990 return ((*a)-> comp) - ((*b)-> comp) ; \ 991 } \ 992 } while( 0 ) 993 994/** 995 * Compare two GLXFBConfigs. This function is intended to be used as the 996 * compare function passed in to qsort. 997 * 998 * \returns If \c a is a "better" config, according to the specification of 999 * SGIX_fbconfig, a number less than zero is returned. If \c b is 1000 * better, then a number greater than zero is return. If both are 1001 * equal, zero is returned. 1002 * \sa qsort, glXChooseVisual, glXChooseFBConfig, glXChooseFBConfigSGIX 1003 */ 1004static int 1005fbconfig_compare(struct glx_config **a, struct glx_config **b) 1006{ 1007 /* The order of these comparisons must NOT change. It is defined by 1008 * the GLX 1.3 spec and ARB_multisample. 1009 */ 1010 1011 PREFER_SMALLER(visualSelectGroup); 1012 1013 /* The sort order for the visualRating is GLX_NONE, GLX_SLOW, and 1014 * GLX_NON_CONFORMANT_CONFIG. It just so happens that this is the 1015 * numerical sort order of the enums (0x8000, 0x8001, and 0x800D). 1016 */ 1017 PREFER_SMALLER(visualRating); 1018 1019 /* This isn't quite right. It is supposed to compare the sum of the 1020 * components the user specifically set minimums for. 1021 */ 1022 PREFER_LARGER_OR_ZERO(redBits); 1023 PREFER_LARGER_OR_ZERO(greenBits); 1024 PREFER_LARGER_OR_ZERO(blueBits); 1025 PREFER_LARGER_OR_ZERO(alphaBits); 1026 1027 PREFER_SMALLER(rgbBits); 1028 1029 if (((*a)->doubleBufferMode != (*b)->doubleBufferMode)) { 1030 /* Prefer single-buffer. 1031 */ 1032 return (!(*a)->doubleBufferMode) ? -1 : 1; 1033 } 1034 1035 PREFER_SMALLER(numAuxBuffers); 1036 1037 PREFER_LARGER_OR_ZERO(depthBits); 1038 PREFER_SMALLER(stencilBits); 1039 1040 /* This isn't quite right. It is supposed to compare the sum of the 1041 * components the user specifically set minimums for. 1042 */ 1043 PREFER_LARGER_OR_ZERO(accumRedBits); 1044 PREFER_LARGER_OR_ZERO(accumGreenBits); 1045 PREFER_LARGER_OR_ZERO(accumBlueBits); 1046 PREFER_LARGER_OR_ZERO(accumAlphaBits); 1047 1048 PREFER_SMALLER(visualType); 1049 1050 /* None of the multisample specs say where this comparison should happen, 1051 * so I put it near the end. 1052 */ 1053 PREFER_SMALLER(sampleBuffers); 1054 PREFER_SMALLER(samples); 1055 1056 /* None of the pbuffer or fbconfig specs say that this comparison needs 1057 * to happen at all, but it seems like it should. 1058 */ 1059 PREFER_LARGER(maxPbufferWidth); 1060 PREFER_LARGER(maxPbufferHeight); 1061 PREFER_LARGER(maxPbufferPixels); 1062 1063 return 0; 1064} 1065 1066 1067/** 1068 * Selects and sorts a subset of the supplied configs based on the attributes. 1069 * This function forms to basis of \c glXChooseVisual, \c glXChooseFBConfig, 1070 * and \c glXChooseFBConfigSGIX. 1071 * 1072 * \param configs Array of pointers to possible configs. The elements of 1073 * this array that do not meet the criteria will be set to 1074 * NULL. The remaining elements will be sorted according to 1075 * the various visual / FBConfig selection rules. 1076 * \param num_configs Number of elements in the \c configs array. 1077 * \param attribList Attributes used select from \c configs. This array is 1078 * terminated by a \c None tag. The array can either take 1079 * the form expected by \c glXChooseVisual (where boolean 1080 * tags do not have a value) or by \c glXChooseFBConfig 1081 * (where every tag has a value). 1082 * \param fbconfig_style_tags Selects whether \c attribList is in 1083 * \c glXChooseVisual style or 1084 * \c glXChooseFBConfig style. 1085 * \returns The number of valid elements left in \c configs. 1086 * 1087 * \sa glXChooseVisual, glXChooseFBConfig, glXChooseFBConfigSGIX 1088 */ 1089static int 1090choose_visual(struct glx_config ** configs, int num_configs, 1091 const int *attribList, GLboolean fbconfig_style_tags) 1092{ 1093 struct glx_config test_config; 1094 int base; 1095 int i; 1096 1097 /* This is a fairly direct implementation of the selection method 1098 * described by GLX_SGIX_fbconfig. Start by culling out all the 1099 * configs that are not compatible with the selected parameter 1100 * list. 1101 */ 1102 1103 init_fbconfig_for_chooser(&test_config, fbconfig_style_tags); 1104 __glXInitializeVisualConfigFromTags(&test_config, 512, 1105 (const INT32 *) attribList, 1106 GL_TRUE, fbconfig_style_tags); 1107 1108 base = 0; 1109 for (i = 0; i < num_configs; i++) { 1110 if (fbconfigs_compatible(&test_config, configs[i])) { 1111 configs[base] = configs[i]; 1112 base++; 1113 } 1114 } 1115 1116 if (base == 0) { 1117 return 0; 1118 } 1119 1120 if (base < num_configs) { 1121 (void) memset(&configs[base], 0, sizeof(void *) * (num_configs - base)); 1122 } 1123 1124 /* After the incompatible configs are removed, the resulting 1125 * list is sorted according to the rules set out in the various 1126 * specifications. 1127 */ 1128 1129 qsort(configs, base, sizeof(struct glx_config *), 1130 (int (*)(const void *, const void *)) fbconfig_compare); 1131 return base; 1132} 1133 1134 1135 1136 1137/* 1138** Return the visual that best matches the template. Return None if no 1139** visual matches the template. 1140*/ 1141_X_EXPORT XVisualInfo * 1142glXChooseVisual(Display * dpy, int screen, int *attribList) 1143{ 1144 XVisualInfo *visualList = NULL; 1145 struct glx_display *priv; 1146 struct glx_screen *psc; 1147 struct glx_config test_config; 1148 struct glx_config *config; 1149 struct glx_config *best_config = NULL; 1150 1151 /* 1152 ** Get a list of all visuals, return if list is empty 1153 */ 1154 if (GetGLXPrivScreenConfig(dpy, screen, &priv, &psc) != Success) { 1155 return None; 1156 } 1157 1158 1159 /* 1160 ** Build a template from the defaults and the attribute list 1161 ** Free visual list and return if an unexpected token is encountered 1162 */ 1163 init_fbconfig_for_chooser(&test_config, GL_FALSE); 1164 __glXInitializeVisualConfigFromTags(&test_config, 512, 1165 (const INT32 *) attribList, 1166 GL_TRUE, GL_FALSE); 1167 1168 /* 1169 ** Eliminate visuals that don't meet minimum requirements 1170 ** Compute a score for those that do 1171 ** Remember which visual, if any, got the highest score 1172 ** If no visual is acceptable, return None 1173 ** Otherwise, create an XVisualInfo list with just the selected X visual 1174 ** and return this. 1175 */ 1176 for (config = psc->visuals; config != NULL; config = config->next) { 1177 if (fbconfigs_compatible(&test_config, config) 1178 && ((best_config == NULL) || 1179 (fbconfig_compare (&config, &best_config) < 0))) { 1180 XVisualInfo visualTemplate; 1181 XVisualInfo *newList; 1182 int i; 1183 1184 visualTemplate.screen = screen; 1185 visualTemplate.visualid = config->visualID; 1186 newList = XGetVisualInfo(dpy, VisualScreenMask | VisualIDMask, 1187 &visualTemplate, &i); 1188 1189 if (newList) { 1190 Xfree(visualList); 1191 visualList = newList; 1192 best_config = config; 1193 } 1194 } 1195 } 1196 1197#ifdef GLX_USE_APPLEGL 1198 if(visualList && getenv("LIBGL_DUMP_VISUALID")) { 1199 printf("visualid 0x%lx\n", visualList[0].visualid); 1200 } 1201#endif 1202 1203 return visualList; 1204} 1205 1206 1207_X_EXPORT const char * 1208glXQueryExtensionsString(Display * dpy, int screen) 1209{ 1210 struct glx_screen *psc; 1211 struct glx_display *priv; 1212 1213 if (GetGLXPrivScreenConfig(dpy, screen, &priv, &psc) != Success) { 1214 return NULL; 1215 } 1216 1217 if (!psc->effectiveGLXexts) { 1218 if (!psc->serverGLXexts) { 1219 psc->serverGLXexts = 1220 __glXQueryServerString(dpy, priv->majorOpcode, screen, 1221 GLX_EXTENSIONS); 1222 } 1223 1224 __glXCalculateUsableExtensions(psc, 1225#if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL) 1226 (psc->driScreen != NULL), 1227#else 1228 GL_FALSE, 1229#endif 1230 priv->minorVersion); 1231 } 1232 1233 return psc->effectiveGLXexts; 1234} 1235 1236_X_EXPORT const char * 1237glXGetClientString(Display * dpy, int name) 1238{ 1239 (void) dpy; 1240 1241 switch (name) { 1242 case GLX_VENDOR: 1243 return (__glXGLXClientVendorName); 1244 case GLX_VERSION: 1245 return (__glXGLXClientVersion); 1246 case GLX_EXTENSIONS: 1247 return (__glXGetClientExtensions()); 1248 default: 1249 return NULL; 1250 } 1251} 1252 1253_X_EXPORT const char * 1254glXQueryServerString(Display * dpy, int screen, int name) 1255{ 1256 struct glx_screen *psc; 1257 struct glx_display *priv; 1258 const char **str; 1259 1260 1261 if (GetGLXPrivScreenConfig(dpy, screen, &priv, &psc) != Success) { 1262 return NULL; 1263 } 1264 1265 switch (name) { 1266 case GLX_VENDOR: 1267 str = &priv->serverGLXvendor; 1268 break; 1269 case GLX_VERSION: 1270 str = &priv->serverGLXversion; 1271 break; 1272 case GLX_EXTENSIONS: 1273 str = &psc->serverGLXexts; 1274 break; 1275 default: 1276 return NULL; 1277 } 1278 1279 if (*str == NULL) { 1280 *str = __glXQueryServerString(dpy, priv->majorOpcode, screen, name); 1281 } 1282 1283 return *str; 1284} 1285 1286void 1287__glXClientInfo(Display * dpy, int opcode) 1288{ 1289 char *ext_str = __glXGetClientGLExtensionString(); 1290 int size = strlen(ext_str) + 1; 1291 1292#ifdef USE_XCB 1293 xcb_connection_t *c = XGetXCBConnection(dpy); 1294 xcb_glx_client_info(c, 1295 GLX_MAJOR_VERSION, GLX_MINOR_VERSION, size, ext_str); 1296#else 1297 xGLXClientInfoReq *req; 1298 1299 /* Send the glXClientInfo request */ 1300 LockDisplay(dpy); 1301 GetReq(GLXClientInfo, req); 1302 req->reqType = opcode; 1303 req->glxCode = X_GLXClientInfo; 1304 req->major = GLX_MAJOR_VERSION; 1305 req->minor = GLX_MINOR_VERSION; 1306 1307 req->length += (size + 3) >> 2; 1308 req->numbytes = size; 1309 Data(dpy, ext_str, size); 1310 1311 UnlockDisplay(dpy); 1312 SyncHandle(); 1313#endif /* USE_XCB */ 1314 1315 Xfree(ext_str); 1316} 1317 1318 1319/* 1320** EXT_import_context 1321*/ 1322 1323_X_EXPORT Display * 1324glXGetCurrentDisplay(void) 1325{ 1326 struct glx_context *gc = __glXGetCurrentContext(); 1327 if (NULL == gc) 1328 return NULL; 1329 return gc->currentDpy; 1330} 1331 1332_X_EXPORT 1333GLX_ALIAS(Display *, glXGetCurrentDisplayEXT, (void), (), 1334 glXGetCurrentDisplay) 1335 1336#ifndef GLX_USE_APPLEGL 1337_X_EXPORT GLXContext 1338glXImportContextEXT(Display *dpy, GLXContextID contextID) 1339{ 1340 struct glx_display *priv = __glXInitialize(dpy); 1341 struct glx_screen *psc; 1342 xGLXQueryContextReply reply; 1343 CARD8 opcode; 1344 struct glx_context *ctx; 1345 int propList[__GLX_MAX_CONTEXT_PROPS * 2], *pProp, nPropListBytes; 1346 int i, renderType; 1347 XID share; 1348 struct glx_config *mode; 1349 1350 if (contextID == None || __glXIsDirect(dpy, contextID)) 1351 return NULL; 1352 1353 opcode = __glXSetupForCommand(dpy); 1354 if (!opcode) 1355 return 0; 1356 1357 /* Send the glXQueryContextInfoEXT request */ 1358 LockDisplay(dpy); 1359 1360 if (priv->majorVersion > 1 || priv->minorVersion >= 3) { 1361 xGLXQueryContextReq *req; 1362 1363 GetReq(GLXQueryContext, req); 1364 1365 req->reqType = opcode; 1366 req->glxCode = X_GLXQueryContext; 1367 req->context = contextID; 1368 } 1369 else { 1370 xGLXVendorPrivateReq *vpreq; 1371 xGLXQueryContextInfoEXTReq *req; 1372 1373 GetReqExtra(GLXVendorPrivate, 1374 sz_xGLXQueryContextInfoEXTReq - sz_xGLXVendorPrivateReq, 1375 vpreq); 1376 req = (xGLXQueryContextInfoEXTReq *) vpreq; 1377 req->reqType = opcode; 1378 req->glxCode = X_GLXVendorPrivateWithReply; 1379 req->vendorCode = X_GLXvop_QueryContextInfoEXT; 1380 req->context = contextID; 1381 } 1382 1383 _XReply(dpy, (xReply *) & reply, 0, False); 1384 1385 if (reply.n <= __GLX_MAX_CONTEXT_PROPS) 1386 nPropListBytes = reply.n * 2 * sizeof propList[0]; 1387 else 1388 nPropListBytes = 0; 1389 _XRead(dpy, (char *) propList, nPropListBytes); 1390 UnlockDisplay(dpy); 1391 SyncHandle(); 1392 1393 /* Look up screen first so we can look up visuals/fbconfigs later */ 1394 psc = NULL; 1395 for (i = 0, pProp = propList; i < reply.n; i++, pProp += 2) 1396 if (pProp[0] == GLX_SCREEN) 1397 psc = GetGLXScreenConfigs(dpy, pProp[1]); 1398 if (psc == NULL) 1399 return NULL; 1400 1401 share = None; 1402 mode = NULL; 1403 renderType = 0; 1404 pProp = propList; 1405 1406 for (i = 0, pProp = propList; i < reply.n; i++, pProp += 2) 1407 switch (pProp[0]) { 1408 case GLX_SHARE_CONTEXT_EXT: 1409 share = pProp[1]; 1410 break; 1411 case GLX_VISUAL_ID_EXT: 1412 mode = glx_config_find_visual(psc->visuals, pProp[1]); 1413 break; 1414 case GLX_FBCONFIG_ID: 1415 mode = glx_config_find_fbconfig(psc->configs, pProp[1]); 1416 break; 1417 case GLX_RENDER_TYPE: 1418 renderType = pProp[1]; 1419 break; 1420 } 1421 1422 if (mode == NULL) 1423 return NULL; 1424 1425 ctx = indirect_create_context(psc, mode, NULL, renderType); 1426 if (ctx == NULL) 1427 return NULL; 1428 1429 ctx->xid = contextID; 1430 ctx->imported = GL_TRUE; 1431 ctx->share_xid = share; 1432 1433 return (GLXContext) ctx; 1434} 1435 1436#endif 1437 1438_X_EXPORT int 1439glXQueryContext(Display * dpy, GLXContext ctx_user, int attribute, int *value) 1440{ 1441 struct glx_context *ctx = (struct glx_context *) ctx_user; 1442 1443 switch (attribute) { 1444 case GLX_SHARE_CONTEXT_EXT: 1445 *value = ctx->share_xid; 1446 break; 1447 case GLX_VISUAL_ID_EXT: 1448 *value = ctx->config ? ctx->config->visualID : None; 1449 break; 1450 case GLX_SCREEN: 1451 *value = ctx->screen; 1452 break; 1453 case GLX_FBCONFIG_ID: 1454 *value = ctx->config ? ctx->config->fbconfigID : None; 1455 break; 1456 case GLX_RENDER_TYPE: 1457 *value = ctx->renderType; 1458 break; 1459 default: 1460 return GLX_BAD_ATTRIBUTE; 1461 } 1462 return Success; 1463} 1464 1465_X_EXPORT 1466GLX_ALIAS(int, glXQueryContextInfoEXT, 1467 (Display * dpy, GLXContext ctx, int attribute, int *value), 1468 (dpy, ctx, attribute, value), glXQueryContext) 1469 1470_X_EXPORT GLXContextID glXGetContextIDEXT(const GLXContext ctx_user) 1471{ 1472 struct glx_context *ctx = (struct glx_context *) ctx_user; 1473 1474 return ctx->xid; 1475} 1476 1477_X_EXPORT 1478GLX_ALIAS_VOID(glXFreeContextEXT, (Display *dpy, GLXContext ctx), (dpy, ctx), 1479 glXDestroyContext); 1480 1481_X_EXPORT GLXFBConfig * 1482glXChooseFBConfig(Display * dpy, int screen, 1483 const int *attribList, int *nitems) 1484{ 1485 struct glx_config **config_list; 1486 int list_size; 1487 1488 1489 config_list = (struct glx_config **) 1490 glXGetFBConfigs(dpy, screen, &list_size); 1491 1492 if ((config_list != NULL) && (list_size > 0) && (attribList != NULL)) { 1493 list_size = choose_visual(config_list, list_size, attribList, GL_TRUE); 1494 if (list_size == 0) { 1495 XFree(config_list); 1496 config_list = NULL; 1497 } 1498 } 1499 1500 *nitems = list_size; 1501 return (GLXFBConfig *) config_list; 1502} 1503 1504 1505_X_EXPORT GLXContext 1506glXCreateNewContext(Display * dpy, GLXFBConfig fbconfig, 1507 int renderType, GLXContext shareList, Bool allowDirect) 1508{ 1509 struct glx_config *config = (struct glx_config *) fbconfig; 1510 1511 return CreateContext(dpy, config->fbconfigID, config, shareList, 1512 allowDirect, X_GLXCreateNewContext, renderType, 1513 config->screen); 1514} 1515 1516 1517_X_EXPORT GLXDrawable 1518glXGetCurrentReadDrawable(void) 1519{ 1520 struct glx_context *gc = __glXGetCurrentContext(); 1521 1522 return gc->currentReadable; 1523} 1524 1525 1526_X_EXPORT GLXFBConfig * 1527glXGetFBConfigs(Display * dpy, int screen, int *nelements) 1528{ 1529 struct glx_display *priv = __glXInitialize(dpy); 1530 struct glx_config **config_list = NULL; 1531 struct glx_config *config; 1532 unsigned num_configs = 0; 1533 int i; 1534 1535 *nelements = 0; 1536 if (priv && (priv->screens != NULL) 1537 && (screen >= 0) && (screen <= ScreenCount(dpy)) 1538 && (priv->screens[screen]->configs != NULL) 1539 && (priv->screens[screen]->configs->fbconfigID 1540 != (int) GLX_DONT_CARE)) { 1541 1542 for (config = priv->screens[screen]->configs; config != NULL; 1543 config = config->next) { 1544 if (config->fbconfigID != (int) GLX_DONT_CARE) { 1545 num_configs++; 1546 } 1547 } 1548 1549 config_list = Xmalloc(num_configs * sizeof *config_list); 1550 if (config_list != NULL) { 1551 *nelements = num_configs; 1552 i = 0; 1553 for (config = priv->screens[screen]->configs; config != NULL; 1554 config = config->next) { 1555 if (config->fbconfigID != (int) GLX_DONT_CARE) { 1556 config_list[i] = config; 1557 i++; 1558 } 1559 } 1560 } 1561 } 1562 1563 return (GLXFBConfig *) config_list; 1564} 1565 1566 1567_X_EXPORT int 1568glXGetFBConfigAttrib(Display * dpy, GLXFBConfig fbconfig, 1569 int attribute, int *value) 1570{ 1571 struct glx_config *config = ValidateGLXFBConfig(dpy, fbconfig); 1572 1573 if (config == NULL) 1574 return GLXBadFBConfig; 1575 1576 return glx_config_get(config, attribute, value); 1577} 1578 1579 1580_X_EXPORT XVisualInfo * 1581glXGetVisualFromFBConfig(Display * dpy, GLXFBConfig fbconfig) 1582{ 1583 XVisualInfo visualTemplate; 1584 struct glx_config *config = (struct glx_config *) fbconfig; 1585 int count; 1586 1587 /* 1588 ** Get a list of all visuals, return if list is empty 1589 */ 1590 visualTemplate.visualid = config->visualID; 1591 return XGetVisualInfo(dpy, VisualIDMask, &visualTemplate, &count); 1592} 1593 1594#ifndef GLX_USE_APPLEGL 1595/* 1596** GLX_SGI_swap_control 1597*/ 1598static int 1599__glXSwapIntervalSGI(int interval) 1600{ 1601 xGLXVendorPrivateReq *req; 1602 struct glx_context *gc = __glXGetCurrentContext(); 1603 struct glx_screen *psc; 1604 Display *dpy; 1605 CARD32 *interval_ptr; 1606 CARD8 opcode; 1607 1608 if (gc == NULL) { 1609 return GLX_BAD_CONTEXT; 1610 } 1611 1612 if (interval <= 0) { 1613 return GLX_BAD_VALUE; 1614 } 1615 1616 psc = GetGLXScreenConfigs( gc->currentDpy, gc->screen); 1617 1618#ifdef GLX_DIRECT_RENDERING 1619 if (gc->isDirect && psc->driScreen && psc->driScreen->setSwapInterval) { 1620 __GLXDRIdrawable *pdraw = 1621 GetGLXDRIDrawable(gc->currentDpy, gc->currentDrawable); 1622 psc->driScreen->setSwapInterval(pdraw, interval); 1623 return 0; 1624 } 1625#endif 1626 1627 dpy = gc->currentDpy; 1628 opcode = __glXSetupForCommand(dpy); 1629 if (!opcode) { 1630 return 0; 1631 } 1632 1633 /* Send the glXSwapIntervalSGI request */ 1634 LockDisplay(dpy); 1635 GetReqExtra(GLXVendorPrivate, sizeof(CARD32), req); 1636 req->reqType = opcode; 1637 req->glxCode = X_GLXVendorPrivate; 1638 req->vendorCode = X_GLXvop_SwapIntervalSGI; 1639 req->contextTag = gc->currentContextTag; 1640 1641 interval_ptr = (CARD32 *) (req + 1); 1642 *interval_ptr = interval; 1643 1644 UnlockDisplay(dpy); 1645 SyncHandle(); 1646 XFlush(dpy); 1647 1648 return 0; 1649} 1650 1651 1652/* 1653** GLX_MESA_swap_control 1654*/ 1655static int 1656__glXSwapIntervalMESA(unsigned int interval) 1657{ 1658#ifdef GLX_DIRECT_RENDERING 1659 struct glx_context *gc = __glXGetCurrentContext(); 1660 1661 if (gc != NULL && gc->isDirect) { 1662 struct glx_screen *psc; 1663 1664 psc = GetGLXScreenConfigs( gc->currentDpy, gc->screen); 1665 if (psc->driScreen && psc->driScreen->setSwapInterval) { 1666 __GLXDRIdrawable *pdraw = 1667 GetGLXDRIDrawable(gc->currentDpy, gc->currentDrawable); 1668 return psc->driScreen->setSwapInterval(pdraw, interval); 1669 } 1670 } 1671#endif 1672 1673 return GLX_BAD_CONTEXT; 1674} 1675 1676 1677static int 1678__glXGetSwapIntervalMESA(void) 1679{ 1680#ifdef GLX_DIRECT_RENDERING 1681 struct glx_context *gc = __glXGetCurrentContext(); 1682 1683 if (gc != NULL && gc->isDirect) { 1684 struct glx_screen *psc; 1685 1686 psc = GetGLXScreenConfigs( gc->currentDpy, gc->screen); 1687 if (psc->driScreen && psc->driScreen->getSwapInterval) { 1688 __GLXDRIdrawable *pdraw = 1689 GetGLXDRIDrawable(gc->currentDpy, gc->currentDrawable); 1690 return psc->driScreen->getSwapInterval(pdraw); 1691 } 1692 } 1693#endif 1694 1695 return 0; 1696} 1697 1698 1699/* 1700** GLX_SGI_video_sync 1701*/ 1702static int 1703__glXGetVideoSyncSGI(unsigned int *count) 1704{ 1705 int64_t ust, msc, sbc; 1706 int ret; 1707 struct glx_context *gc = __glXGetCurrentContext(); 1708 struct glx_screen *psc; 1709#ifdef GLX_DIRECT_RENDERING 1710 __GLXDRIdrawable *pdraw; 1711#endif 1712 1713 if (!gc) 1714 return GLX_BAD_CONTEXT; 1715 1716#ifdef GLX_DIRECT_RENDERING 1717 if (!gc->isDirect) 1718 return GLX_BAD_CONTEXT; 1719#endif 1720 1721 psc = GetGLXScreenConfigs(gc->currentDpy, gc->screen); 1722#ifdef GLX_DIRECT_RENDERING 1723 pdraw = GetGLXDRIDrawable(gc->currentDpy, gc->currentDrawable); 1724#endif 1725 1726 /* FIXME: Looking at the GLX_SGI_video_sync spec in the extension registry, 1727 * FIXME: there should be a GLX encoding for this call. I can find no 1728 * FIXME: documentation for the GLX encoding. 1729 */ 1730#ifdef GLX_DIRECT_RENDERING 1731 if (psc->driScreen && psc->driScreen->getDrawableMSC) { 1732 ret = psc->driScreen->getDrawableMSC(psc, pdraw, &ust, &msc, &sbc); 1733 *count = (unsigned) msc; 1734 return (ret == True) ? 0 : GLX_BAD_CONTEXT; 1735 } 1736#endif 1737 1738 return GLX_BAD_CONTEXT; 1739} 1740 1741static int 1742__glXWaitVideoSyncSGI(int divisor, int remainder, unsigned int *count) 1743{ 1744 struct glx_context *gc = __glXGetCurrentContext(); 1745 struct glx_screen *psc; 1746#ifdef GLX_DIRECT_RENDERING 1747 __GLXDRIdrawable *pdraw; 1748#endif 1749 int64_t ust, msc, sbc; 1750 int ret; 1751 1752 if (divisor <= 0 || remainder < 0) 1753 return GLX_BAD_VALUE; 1754 1755 if (!gc) 1756 return GLX_BAD_CONTEXT; 1757 1758#ifdef GLX_DIRECT_RENDERING 1759 if (!gc->isDirect) 1760 return GLX_BAD_CONTEXT; 1761#endif 1762 1763 psc = GetGLXScreenConfigs( gc->currentDpy, gc->screen); 1764#ifdef GLX_DIRECT_RENDERING 1765 pdraw = GetGLXDRIDrawable(gc->currentDpy, gc->currentDrawable); 1766#endif 1767 1768#ifdef GLX_DIRECT_RENDERING 1769 if (psc->driScreen && psc->driScreen->waitForMSC) { 1770 ret = psc->driScreen->waitForMSC(pdraw, 0, divisor, remainder, &ust, &msc, 1771 &sbc); 1772 *count = (unsigned) msc; 1773 return (ret == True) ? 0 : GLX_BAD_CONTEXT; 1774 } 1775#endif 1776 1777 return GLX_BAD_CONTEXT; 1778} 1779 1780#endif /* GLX_USE_APPLEGL */ 1781 1782/* 1783** GLX_SGIX_fbconfig 1784** Many of these functions are aliased to GLX 1.3 entry points in the 1785** GLX_functions table. 1786*/ 1787 1788_X_EXPORT 1789GLX_ALIAS(int, glXGetFBConfigAttribSGIX, 1790 (Display * dpy, GLXFBConfigSGIX config, int attribute, int *value), 1791 (dpy, config, attribute, value), glXGetFBConfigAttrib) 1792 1793_X_EXPORT GLX_ALIAS(GLXFBConfigSGIX *, glXChooseFBConfigSGIX, 1794 (Display * dpy, int screen, int *attrib_list, 1795 int *nelements), (dpy, screen, attrib_list, nelements), 1796 glXChooseFBConfig) 1797 1798_X_EXPORT GLX_ALIAS(XVisualInfo *, glXGetVisualFromFBConfigSGIX, 1799 (Display * dpy, GLXFBConfigSGIX config), 1800 (dpy, config), glXGetVisualFromFBConfig) 1801 1802_X_EXPORT GLXPixmap 1803glXCreateGLXPixmapWithConfigSGIX(Display * dpy, 1804 GLXFBConfigSGIX fbconfig, 1805 Pixmap pixmap) 1806{ 1807#ifndef GLX_USE_APPLEGL 1808 xGLXVendorPrivateWithReplyReq *vpreq; 1809 xGLXCreateGLXPixmapWithConfigSGIXReq *req; 1810 GLXPixmap xid = None; 1811 CARD8 opcode; 1812 struct glx_screen *psc; 1813#endif 1814 struct glx_config *config = (struct glx_config *) fbconfig; 1815 1816 1817 if ((dpy == NULL) || (config == NULL)) { 1818 return None; 1819 } 1820#ifdef GLX_USE_APPLEGL 1821 if(apple_glx_pixmap_create(dpy, config->screen, pixmap, config)) 1822 return None; 1823 return pixmap; 1824#else 1825 1826 psc = GetGLXScreenConfigs(dpy, config->screen); 1827 if ((psc != NULL) 1828 && __glXExtensionBitIsEnabled(psc, SGIX_fbconfig_bit)) { 1829 opcode = __glXSetupForCommand(dpy); 1830 if (!opcode) { 1831 return None; 1832 } 1833 1834 /* Send the glXCreateGLXPixmapWithConfigSGIX request */ 1835 LockDisplay(dpy); 1836 GetReqExtra(GLXVendorPrivateWithReply, 1837 sz_xGLXCreateGLXPixmapWithConfigSGIXReq - 1838 sz_xGLXVendorPrivateWithReplyReq, vpreq); 1839 req = (xGLXCreateGLXPixmapWithConfigSGIXReq *) vpreq; 1840 req->reqType = opcode; 1841 req->glxCode = X_GLXVendorPrivateWithReply; 1842 req->vendorCode = X_GLXvop_CreateGLXPixmapWithConfigSGIX; 1843 req->screen = config->screen; 1844 req->fbconfig = config->fbconfigID; 1845 req->pixmap = pixmap; 1846 req->glxpixmap = xid = XAllocID(dpy); 1847 UnlockDisplay(dpy); 1848 SyncHandle(); 1849 } 1850 1851 return xid; 1852#endif 1853} 1854 1855_X_EXPORT GLXContext 1856glXCreateContextWithConfigSGIX(Display * dpy, 1857 GLXFBConfigSGIX fbconfig, int renderType, 1858 GLXContext shareList, Bool allowDirect) 1859{ 1860 GLXContext gc = NULL; 1861 struct glx_config *config = (struct glx_config *) fbconfig; 1862 struct glx_screen *psc; 1863 1864 1865 if ((dpy == NULL) || (config == NULL)) { 1866 return None; 1867 } 1868 1869 psc = GetGLXScreenConfigs(dpy, config->screen); 1870 if ((psc != NULL) 1871 && __glXExtensionBitIsEnabled(psc, SGIX_fbconfig_bit)) { 1872 gc = CreateContext(dpy, config->fbconfigID, config, shareList, 1873 allowDirect, 1874 X_GLXvop_CreateContextWithConfigSGIX, renderType, 1875 config->screen); 1876 } 1877 1878 return gc; 1879} 1880 1881 1882_X_EXPORT GLXFBConfigSGIX 1883glXGetFBConfigFromVisualSGIX(Display * dpy, XVisualInfo * vis) 1884{ 1885 struct glx_display *priv; 1886 struct glx_screen *psc = NULL; 1887 1888 if ((GetGLXPrivScreenConfig(dpy, vis->screen, &priv, &psc) == Success) 1889 && __glXExtensionBitIsEnabled(psc, SGIX_fbconfig_bit) 1890 && (psc->configs->fbconfigID != (int) GLX_DONT_CARE)) { 1891 return (GLXFBConfigSGIX) glx_config_find_visual(psc->configs, 1892 vis->visualid); 1893 } 1894 1895 return NULL; 1896} 1897 1898#ifndef GLX_USE_APPLEGL 1899/* 1900** GLX_SGIX_swap_group 1901*/ 1902static void 1903__glXJoinSwapGroupSGIX(Display * dpy, GLXDrawable drawable, 1904 GLXDrawable member) 1905{ 1906 (void) dpy; 1907 (void) drawable; 1908 (void) member; 1909} 1910 1911 1912/* 1913** GLX_SGIX_swap_barrier 1914*/ 1915static void 1916__glXBindSwapBarrierSGIX(Display * dpy, GLXDrawable drawable, int barrier) 1917{ 1918 (void) dpy; 1919 (void) drawable; 1920 (void) barrier; 1921} 1922 1923static Bool 1924__glXQueryMaxSwapBarriersSGIX(Display * dpy, int screen, int *max) 1925{ 1926 (void) dpy; 1927 (void) screen; 1928 (void) max; 1929 return False; 1930} 1931 1932 1933/* 1934** GLX_OML_sync_control 1935*/ 1936static Bool 1937__glXGetSyncValuesOML(Display * dpy, GLXDrawable drawable, 1938 int64_t * ust, int64_t * msc, int64_t * sbc) 1939{ 1940 struct glx_display * const priv = __glXInitialize(dpy); 1941 int ret; 1942#ifdef GLX_DIRECT_RENDERING 1943 __GLXDRIdrawable *pdraw; 1944#endif 1945 struct glx_screen *psc; 1946 1947 if (!priv) 1948 return False; 1949 1950#ifdef GLX_DIRECT_RENDERING 1951 pdraw = GetGLXDRIDrawable(dpy, drawable); 1952 psc = pdraw ? pdraw->psc : NULL; 1953 if (pdraw && psc->driScreen->getDrawableMSC) { 1954 ret = psc->driScreen->getDrawableMSC(psc, pdraw, ust, msc, sbc); 1955 return ret; 1956 } 1957#endif 1958 1959 return False; 1960} 1961 1962#if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL) 1963_X_HIDDEN GLboolean 1964__glxGetMscRate(__GLXDRIdrawable *glxDraw, 1965 int32_t * numerator, int32_t * denominator) 1966{ 1967#ifdef XF86VIDMODE 1968 struct glx_screen *psc; 1969 XF86VidModeModeLine mode_line; 1970 int dot_clock; 1971 int i; 1972 1973 psc = glxDraw->psc; 1974 if (XF86VidModeQueryVersion(psc->dpy, &i, &i) && 1975 XF86VidModeGetModeLine(psc->dpy, psc->scr, &dot_clock, &mode_line)) { 1976 unsigned n = dot_clock * 1000; 1977 unsigned d = mode_line.vtotal * mode_line.htotal; 1978 1979# define V_INTERLACE 0x010 1980# define V_DBLSCAN 0x020 1981 1982 if (mode_line.flags & V_INTERLACE) 1983 n *= 2; 1984 else if (mode_line.flags & V_DBLSCAN) 1985 d *= 2; 1986 1987 /* The OML_sync_control spec requires that if the refresh rate is a 1988 * whole number, that the returned numerator be equal to the refresh 1989 * rate and the denominator be 1. 1990 */ 1991 1992 if (n % d == 0) { 1993 n /= d; 1994 d = 1; 1995 } 1996 else { 1997 static const unsigned f[] = { 13, 11, 7, 5, 3, 2, 0 }; 1998 1999 /* This is a poor man's way to reduce a fraction. It's far from 2000 * perfect, but it will work well enough for this situation. 2001 */ 2002 2003 for (i = 0; f[i] != 0; i++) { 2004 while (n % f[i] == 0 && d % f[i] == 0) { 2005 d /= f[i]; 2006 n /= f[i]; 2007 } 2008 } 2009 } 2010 2011 *numerator = n; 2012 *denominator = d; 2013 2014 return True; 2015 } 2016 else 2017#endif 2018 2019 return False; 2020} 2021#endif 2022 2023/** 2024 * Determine the refresh rate of the specified drawable and display. 2025 * 2026 * \param dpy Display whose refresh rate is to be determined. 2027 * \param drawable Drawable whose refresh rate is to be determined. 2028 * \param numerator Numerator of the refresh rate. 2029 * \param demoninator Denominator of the refresh rate. 2030 * \return If the refresh rate for the specified display and drawable could 2031 * be calculated, True is returned. Otherwise False is returned. 2032 * 2033 * \note This function is implemented entirely client-side. A lot of other 2034 * functionality is required to export GLX_OML_sync_control, so on 2035 * XFree86 this function can be called for direct-rendering contexts 2036 * when GLX_OML_sync_control appears in the client extension string. 2037 */ 2038 2039_X_HIDDEN GLboolean 2040__glXGetMscRateOML(Display * dpy, GLXDrawable drawable, 2041 int32_t * numerator, int32_t * denominator) 2042{ 2043#if defined( GLX_DIRECT_RENDERING ) && defined( XF86VIDMODE ) 2044 __GLXDRIdrawable *draw = GetGLXDRIDrawable(dpy, drawable); 2045 2046 if (draw == NULL) 2047 return False; 2048 2049 return __glxGetMscRate(draw, numerator, denominator); 2050#else 2051 (void) dpy; 2052 (void) drawable; 2053 (void) numerator; 2054 (void) denominator; 2055#endif 2056 return False; 2057} 2058 2059 2060static int64_t 2061__glXSwapBuffersMscOML(Display * dpy, GLXDrawable drawable, 2062 int64_t target_msc, int64_t divisor, int64_t remainder) 2063{ 2064 struct glx_context *gc = __glXGetCurrentContext(); 2065#ifdef GLX_DIRECT_RENDERING 2066 __GLXDRIdrawable *pdraw = GetGLXDRIDrawable(dpy, drawable); 2067 struct glx_screen *psc = pdraw ? pdraw->psc : NULL; 2068#endif 2069 2070 if (!gc) /* no GLX for this */ 2071 return -1; 2072 2073#ifdef GLX_DIRECT_RENDERING 2074 if (!pdraw || !gc->isDirect) 2075 return -1; 2076#endif 2077 2078 /* The OML_sync_control spec says these should "generate a GLX_BAD_VALUE 2079 * error", but it also says "It [glXSwapBuffersMscOML] will return a value 2080 * of -1 if the function failed because of errors detected in the input 2081 * parameters" 2082 */ 2083 if (divisor < 0 || remainder < 0 || target_msc < 0) 2084 return -1; 2085 if (divisor > 0 && remainder >= divisor) 2086 return -1; 2087 2088 if (target_msc == 0 && divisor == 0 && remainder == 0) 2089 remainder = 1; 2090 2091#ifdef GLX_DIRECT_RENDERING 2092 if (psc->driScreen && psc->driScreen->swapBuffers) 2093 return (*psc->driScreen->swapBuffers)(pdraw, target_msc, divisor, 2094 remainder); 2095#endif 2096 2097 return -1; 2098} 2099 2100 2101static Bool 2102__glXWaitForMscOML(Display * dpy, GLXDrawable drawable, 2103 int64_t target_msc, int64_t divisor, 2104 int64_t remainder, int64_t * ust, 2105 int64_t * msc, int64_t * sbc) 2106{ 2107#ifdef GLX_DIRECT_RENDERING 2108 __GLXDRIdrawable *pdraw = GetGLXDRIDrawable(dpy, drawable); 2109 struct glx_screen *psc = pdraw ? pdraw->psc : NULL; 2110 int ret; 2111#endif 2112 2113 2114 /* The OML_sync_control spec says these should "generate a GLX_BAD_VALUE 2115 * error", but the return type in the spec is Bool. 2116 */ 2117 if (divisor < 0 || remainder < 0 || target_msc < 0) 2118 return False; 2119 if (divisor > 0 && remainder >= divisor) 2120 return False; 2121 2122#ifdef GLX_DIRECT_RENDERING 2123 if (pdraw && psc->driScreen && psc->driScreen->waitForMSC) { 2124 ret = psc->driScreen->waitForMSC(pdraw, target_msc, divisor, remainder, 2125 ust, msc, sbc); 2126 return ret; 2127 } 2128#endif 2129 2130 return False; 2131} 2132 2133 2134static Bool 2135__glXWaitForSbcOML(Display * dpy, GLXDrawable drawable, 2136 int64_t target_sbc, int64_t * ust, 2137 int64_t * msc, int64_t * sbc) 2138{ 2139#ifdef GLX_DIRECT_RENDERING 2140 __GLXDRIdrawable *pdraw = GetGLXDRIDrawable(dpy, drawable); 2141 struct glx_screen *psc = pdraw ? pdraw->psc : NULL; 2142 int ret; 2143#endif 2144 2145 /* The OML_sync_control spec says this should "generate a GLX_BAD_VALUE 2146 * error", but the return type in the spec is Bool. 2147 */ 2148 if (target_sbc < 0) 2149 return False; 2150 2151#ifdef GLX_DIRECT_RENDERING 2152 if (pdraw && psc->driScreen && psc->driScreen->waitForSBC) { 2153 ret = psc->driScreen->waitForSBC(pdraw, target_sbc, ust, msc, sbc); 2154 return ret; 2155 } 2156#endif 2157 2158 return False; 2159} 2160 2161/*@}*/ 2162 2163 2164/** 2165 * Mesa extension stubs. These will help reduce portability problems. 2166 */ 2167/*@{*/ 2168 2169/** 2170 * Release all buffers associated with the specified GLX drawable. 2171 * 2172 * \todo 2173 * This function was intended for stand-alone Mesa. The issue there is that 2174 * the library doesn't get any notification when a window is closed. In 2175 * DRI there is a similar but slightly different issue. When GLX 1.3 is 2176 * supported, there are 3 different functions to destroy a drawable. It 2177 * should be possible to create GLX protocol (or have it determine which 2178 * protocol to use based on the type of the drawable) to have one function 2179 * do the work of 3. For the direct-rendering case, this function could 2180 * just call the driver's \c __DRIdrawableRec::destroyDrawable function. 2181 * This would reduce the frequency with which \c __driGarbageCollectDrawables 2182 * would need to be used. This really should be done as part of the new DRI 2183 * interface work. 2184 * 2185 * \sa http://oss.sgi.com/projects/ogl-sample/registry/MESA/release_buffers.txt 2186 * __driGarbageCollectDrawables 2187 * glXDestroyGLXPixmap 2188 * glXDestroyPbuffer glXDestroyPixmap glXDestroyWindow 2189 * glXDestroyGLXPbufferSGIX glXDestroyGLXVideoSourceSGIX 2190 */ 2191static Bool 2192__glXReleaseBuffersMESA(Display * dpy, GLXDrawable d) 2193{ 2194 (void) dpy; 2195 (void) d; 2196 return False; 2197} 2198 2199 2200_X_EXPORT GLXPixmap 2201glXCreateGLXPixmapMESA(Display * dpy, XVisualInfo * visual, 2202 Pixmap pixmap, Colormap cmap) 2203{ 2204 (void) dpy; 2205 (void) visual; 2206 (void) pixmap; 2207 (void) cmap; 2208 return 0; 2209} 2210 2211/*@}*/ 2212 2213 2214/** 2215 * GLX_MESA_copy_sub_buffer 2216 */ 2217#define X_GLXvop_CopySubBufferMESA 5154 /* temporary */ 2218static void 2219__glXCopySubBufferMESA(Display * dpy, GLXDrawable drawable, 2220 int x, int y, int width, int height) 2221{ 2222 xGLXVendorPrivateReq *req; 2223 struct glx_context *gc; 2224 GLXContextTag tag; 2225 CARD32 *drawable_ptr; 2226 INT32 *x_ptr, *y_ptr, *w_ptr, *h_ptr; 2227 CARD8 opcode; 2228 2229#if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL) 2230 __GLXDRIdrawable *pdraw = GetGLXDRIDrawable(dpy, drawable); 2231 if (pdraw != NULL) { 2232 struct glx_screen *psc = pdraw->psc; 2233 if (psc->driScreen->copySubBuffer != NULL) { 2234 glFlush(); 2235 (*psc->driScreen->copySubBuffer) (pdraw, x, y, width, height); 2236 } 2237 2238 return; 2239 } 2240#endif 2241 2242 opcode = __glXSetupForCommand(dpy); 2243 if (!opcode) 2244 return; 2245 2246 /* 2247 ** The calling thread may or may not have a current context. If it 2248 ** does, send the context tag so the server can do a flush. 2249 */ 2250 gc = __glXGetCurrentContext(); 2251 if ((gc != NULL) && (dpy == gc->currentDpy) && 2252 ((drawable == gc->currentDrawable) || 2253 (drawable == gc->currentReadable))) { 2254 tag = gc->currentContextTag; 2255 } 2256 else { 2257 tag = 0; 2258 } 2259 2260 LockDisplay(dpy); 2261 GetReqExtra(GLXVendorPrivate, sizeof(CARD32) + sizeof(INT32) * 4, req); 2262 req->reqType = opcode; 2263 req->glxCode = X_GLXVendorPrivate; 2264 req->vendorCode = X_GLXvop_CopySubBufferMESA; 2265 req->contextTag = tag; 2266 2267 drawable_ptr = (CARD32 *) (req + 1); 2268 x_ptr = (INT32 *) (drawable_ptr + 1); 2269 y_ptr = (INT32 *) (drawable_ptr + 2); 2270 w_ptr = (INT32 *) (drawable_ptr + 3); 2271 h_ptr = (INT32 *) (drawable_ptr + 4); 2272 2273 *drawable_ptr = drawable; 2274 *x_ptr = x; 2275 *y_ptr = y; 2276 *w_ptr = width; 2277 *h_ptr = height; 2278 2279 UnlockDisplay(dpy); 2280 SyncHandle(); 2281} 2282 2283/*@{*/ 2284static void 2285__glXBindTexImageEXT(Display * dpy, 2286 GLXDrawable drawable, int buffer, const int *attrib_list) 2287{ 2288 struct glx_context *gc = __glXGetCurrentContext(); 2289 2290 if (gc == NULL || gc->vtable->bind_tex_image == NULL) 2291 return; 2292 2293 gc->vtable->bind_tex_image(dpy, drawable, buffer, attrib_list); 2294} 2295 2296static void 2297__glXReleaseTexImageEXT(Display * dpy, GLXDrawable drawable, int buffer) 2298{ 2299 struct glx_context *gc = __glXGetCurrentContext(); 2300 2301 if (gc == NULL || gc->vtable->release_tex_image == NULL) 2302 return; 2303 2304 gc->vtable->release_tex_image(dpy, drawable, buffer); 2305} 2306 2307/*@}*/ 2308 2309#endif /* GLX_USE_APPLEGL */ 2310 2311/** 2312 * \c strdup is actually not a standard ANSI C or POSIX routine. 2313 * Irix will not define it if ANSI mode is in effect. 2314 * 2315 * \sa strdup 2316 */ 2317_X_HIDDEN char * 2318__glXstrdup(const char *str) 2319{ 2320 char *copy; 2321 copy = (char *) Xmalloc(strlen(str) + 1); 2322 if (!copy) 2323 return NULL; 2324 strcpy(copy, str); 2325 return copy; 2326} 2327 2328/* 2329** glXGetProcAddress support 2330*/ 2331 2332struct name_address_pair 2333{ 2334 const char *Name; 2335 GLvoid *Address; 2336}; 2337 2338#define GLX_FUNCTION(f) { # f, (GLvoid *) f } 2339#define GLX_FUNCTION2(n,f) { # n, (GLvoid *) f } 2340 2341static const struct name_address_pair GLX_functions[] = { 2342 /*** GLX_VERSION_1_0 ***/ 2343 GLX_FUNCTION(glXChooseVisual), 2344 GLX_FUNCTION(glXCopyContext), 2345 GLX_FUNCTION(glXCreateContext), 2346 GLX_FUNCTION(glXCreateGLXPixmap), 2347 GLX_FUNCTION(glXDestroyContext), 2348 GLX_FUNCTION(glXDestroyGLXPixmap), 2349 GLX_FUNCTION(glXGetConfig), 2350 GLX_FUNCTION(glXGetCurrentContext), 2351 GLX_FUNCTION(glXGetCurrentDrawable), 2352 GLX_FUNCTION(glXIsDirect), 2353 GLX_FUNCTION(glXMakeCurrent), 2354 GLX_FUNCTION(glXQueryExtension), 2355 GLX_FUNCTION(glXQueryVersion), 2356 GLX_FUNCTION(glXSwapBuffers), 2357 GLX_FUNCTION(glXUseXFont), 2358 GLX_FUNCTION(glXWaitGL), 2359 GLX_FUNCTION(glXWaitX), 2360 2361 /*** GLX_VERSION_1_1 ***/ 2362 GLX_FUNCTION(glXGetClientString), 2363 GLX_FUNCTION(glXQueryExtensionsString), 2364 GLX_FUNCTION(glXQueryServerString), 2365 2366 /*** GLX_VERSION_1_2 ***/ 2367 GLX_FUNCTION(glXGetCurrentDisplay), 2368 2369 /*** GLX_VERSION_1_3 ***/ 2370 GLX_FUNCTION(glXChooseFBConfig), 2371 GLX_FUNCTION(glXCreateNewContext), 2372 GLX_FUNCTION(glXCreatePbuffer), 2373 GLX_FUNCTION(glXCreatePixmap), 2374 GLX_FUNCTION(glXCreateWindow), 2375 GLX_FUNCTION(glXDestroyPbuffer), 2376 GLX_FUNCTION(glXDestroyPixmap), 2377 GLX_FUNCTION(glXDestroyWindow), 2378 GLX_FUNCTION(glXGetCurrentReadDrawable), 2379 GLX_FUNCTION(glXGetFBConfigAttrib), 2380 GLX_FUNCTION(glXGetFBConfigs), 2381 GLX_FUNCTION(glXGetSelectedEvent), 2382 GLX_FUNCTION(glXGetVisualFromFBConfig), 2383 GLX_FUNCTION(glXMakeContextCurrent), 2384 GLX_FUNCTION(glXQueryContext), 2385 GLX_FUNCTION(glXQueryDrawable), 2386 GLX_FUNCTION(glXSelectEvent), 2387 2388#ifndef GLX_USE_APPLEGL 2389 /*** GLX_SGI_swap_control ***/ 2390 GLX_FUNCTION2(glXSwapIntervalSGI, __glXSwapIntervalSGI), 2391 2392 /*** GLX_SGI_video_sync ***/ 2393 GLX_FUNCTION2(glXGetVideoSyncSGI, __glXGetVideoSyncSGI), 2394 GLX_FUNCTION2(glXWaitVideoSyncSGI, __glXWaitVideoSyncSGI), 2395 2396 /*** GLX_SGI_make_current_read ***/ 2397 GLX_FUNCTION2(glXMakeCurrentReadSGI, glXMakeContextCurrent), 2398 GLX_FUNCTION2(glXGetCurrentReadDrawableSGI, glXGetCurrentReadDrawable), 2399 2400 /*** GLX_EXT_import_context ***/ 2401 GLX_FUNCTION(glXFreeContextEXT), 2402 GLX_FUNCTION(glXGetContextIDEXT), 2403 GLX_FUNCTION2(glXGetCurrentDisplayEXT, glXGetCurrentDisplay), 2404 GLX_FUNCTION(glXImportContextEXT), 2405 GLX_FUNCTION2(glXQueryContextInfoEXT, glXQueryContext), 2406#endif 2407 2408 /*** GLX_SGIX_fbconfig ***/ 2409 GLX_FUNCTION2(glXGetFBConfigAttribSGIX, glXGetFBConfigAttrib), 2410 GLX_FUNCTION2(glXChooseFBConfigSGIX, glXChooseFBConfig), 2411 GLX_FUNCTION(glXCreateGLXPixmapWithConfigSGIX), 2412 GLX_FUNCTION(glXCreateContextWithConfigSGIX), 2413 GLX_FUNCTION2(glXGetVisualFromFBConfigSGIX, glXGetVisualFromFBConfig), 2414 GLX_FUNCTION(glXGetFBConfigFromVisualSGIX), 2415 2416#ifndef GLX_USE_APPLEGL 2417 /*** GLX_SGIX_pbuffer ***/ 2418 GLX_FUNCTION(glXCreateGLXPbufferSGIX), 2419 GLX_FUNCTION(glXDestroyGLXPbufferSGIX), 2420 GLX_FUNCTION(glXQueryGLXPbufferSGIX), 2421 GLX_FUNCTION(glXSelectEventSGIX), 2422 GLX_FUNCTION(glXGetSelectedEventSGIX), 2423 2424 /*** GLX_SGIX_swap_group ***/ 2425 GLX_FUNCTION2(glXJoinSwapGroupSGIX, __glXJoinSwapGroupSGIX), 2426 2427 /*** GLX_SGIX_swap_barrier ***/ 2428 GLX_FUNCTION2(glXBindSwapBarrierSGIX, __glXBindSwapBarrierSGIX), 2429 GLX_FUNCTION2(glXQueryMaxSwapBarriersSGIX, __glXQueryMaxSwapBarriersSGIX), 2430 2431 /*** GLX_MESA_copy_sub_buffer ***/ 2432 GLX_FUNCTION2(glXCopySubBufferMESA, __glXCopySubBufferMESA), 2433 2434 /*** GLX_MESA_pixmap_colormap ***/ 2435 GLX_FUNCTION(glXCreateGLXPixmapMESA), 2436 2437 /*** GLX_MESA_release_buffers ***/ 2438 GLX_FUNCTION2(glXReleaseBuffersMESA, __glXReleaseBuffersMESA), 2439 2440 /*** GLX_MESA_swap_control ***/ 2441 GLX_FUNCTION2(glXSwapIntervalMESA, __glXSwapIntervalMESA), 2442 GLX_FUNCTION2(glXGetSwapIntervalMESA, __glXGetSwapIntervalMESA), 2443#endif 2444 2445 /*** GLX_ARB_get_proc_address ***/ 2446 GLX_FUNCTION(glXGetProcAddressARB), 2447 2448 /*** GLX 1.4 ***/ 2449 GLX_FUNCTION2(glXGetProcAddress, glXGetProcAddressARB), 2450 2451#ifndef GLX_USE_APPLEGL 2452 /*** GLX_OML_sync_control ***/ 2453 GLX_FUNCTION2(glXWaitForSbcOML, __glXWaitForSbcOML), 2454 GLX_FUNCTION2(glXWaitForMscOML, __glXWaitForMscOML), 2455 GLX_FUNCTION2(glXSwapBuffersMscOML, __glXSwapBuffersMscOML), 2456 GLX_FUNCTION2(glXGetMscRateOML, __glXGetMscRateOML), 2457 GLX_FUNCTION2(glXGetSyncValuesOML, __glXGetSyncValuesOML), 2458 2459 /*** GLX_EXT_texture_from_pixmap ***/ 2460 GLX_FUNCTION2(glXBindTexImageEXT, __glXBindTexImageEXT), 2461 GLX_FUNCTION2(glXReleaseTexImageEXT, __glXReleaseTexImageEXT), 2462#endif 2463 2464#if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL) 2465 /*** DRI configuration ***/ 2466 GLX_FUNCTION(glXGetScreenDriver), 2467 GLX_FUNCTION(glXGetDriverConfig), 2468#endif 2469 2470 {NULL, NULL} /* end of list */ 2471}; 2472 2473static const GLvoid * 2474get_glx_proc_address(const char *funcName) 2475{ 2476 GLuint i; 2477 2478 /* try static functions */ 2479 for (i = 0; GLX_functions[i].Name; i++) { 2480 if (strcmp(GLX_functions[i].Name, funcName) == 0) 2481 return GLX_functions[i].Address; 2482 } 2483 2484 return NULL; 2485} 2486 2487/** 2488 * Get the address of a named GL function. This is the pre-GLX 1.4 name for 2489 * \c glXGetProcAddress. 2490 * 2491 * \param procName Name of a GL or GLX function. 2492 * \returns A pointer to the named function 2493 * 2494 * \sa glXGetProcAddress 2495 */ 2496_X_EXPORT void (*glXGetProcAddressARB(const GLubyte * procName)) (void) 2497{ 2498 typedef void (*gl_function) (void); 2499 gl_function f; 2500 2501 2502 /* Search the table of GLX and internal functions first. If that 2503 * fails and the supplied name could be a valid core GL name, try 2504 * searching the core GL function table. This check is done to prevent 2505 * DRI based drivers from searching the core GL function table for 2506 * internal API functions. 2507 */ 2508 f = (gl_function) get_glx_proc_address((const char *) procName); 2509 if ((f == NULL) && (procName[0] == 'g') && (procName[1] == 'l') 2510 && (procName[2] != 'X')) { 2511#ifdef GLX_SHARED_GLAPI 2512 f = (gl_function) __indirect_get_proc_address((const char *) procName); 2513#endif 2514 if (!f) 2515 f = (gl_function) _glapi_get_proc_address((const char *) procName); 2516 if (!f) { 2517 struct glx_context *gc = __glXGetCurrentContext(); 2518 2519 if (gc != NULL && gc->vtable->get_proc_address != NULL) 2520 f = gc->vtable->get_proc_address((const char *) procName); 2521 } 2522 } 2523 return f; 2524} 2525 2526/** 2527 * Get the address of a named GL function. This is the GLX 1.4 name for 2528 * \c glXGetProcAddressARB. 2529 * 2530 * \param procName Name of a GL or GLX function. 2531 * \returns A pointer to the named function 2532 * 2533 * \sa glXGetProcAddressARB 2534 */ 2535_X_EXPORT void (*glXGetProcAddress(const GLubyte * procName)) (void) 2536#if defined(__GNUC__) && !defined(GLX_ALIAS_UNSUPPORTED) 2537 __attribute__ ((alias("glXGetProcAddressARB"))); 2538#else 2539{ 2540 return glXGetProcAddressARB(procName); 2541} 2542#endif /* __GNUC__ */ 2543 2544 2545#if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL) 2546/** 2547 * Get the unadjusted system time (UST). Currently, the UST is measured in 2548 * microseconds since Epoc. The actual resolution of the UST may vary from 2549 * system to system, and the units may vary from release to release. 2550 * Drivers should not call this function directly. They should instead use 2551 * \c glXGetProcAddress to obtain a pointer to the function. 2552 * 2553 * \param ust Location to store the 64-bit UST 2554 * \returns Zero on success or a negative errno value on failure. 2555 * 2556 * \sa glXGetProcAddress, PFNGLXGETUSTPROC 2557 * 2558 * \since Internal API version 20030317. 2559 */ 2560_X_HIDDEN int 2561__glXGetUST(int64_t * ust) 2562{ 2563 struct timeval tv; 2564 2565 if (ust == NULL) { 2566 return -EFAULT; 2567 } 2568 2569 if (gettimeofday(&tv, NULL) == 0) { 2570 ust[0] = (tv.tv_sec * 1000000) + tv.tv_usec; 2571 return 0; 2572 } 2573 else { 2574 return -errno; 2575 } 2576} 2577#endif /* GLX_DIRECT_RENDERING */ 2578