glxcmds.c revision 816b8acfe81d5e2d666eb926f669d6015df0bbac
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 gc->vtable->destroy(gc); 381} 382 383_X_EXPORT void 384glXDestroyContext(Display * dpy, GLXContext gc) 385{ 386 DestroyContext(dpy, gc); 387} 388 389/* 390** Return the major and minor version #s for the GLX extension 391*/ 392_X_EXPORT Bool 393glXQueryVersion(Display * dpy, int *major, int *minor) 394{ 395 struct glx_display *priv; 396 397 /* Init the extension. This fetches the major and minor version. */ 398 priv = __glXInitialize(dpy); 399 if (!priv) 400 return GL_FALSE; 401 402 if (major) 403 *major = priv->majorVersion; 404 if (minor) 405 *minor = priv->minorVersion; 406 return GL_TRUE; 407} 408 409/* 410** Query the existance of the GLX extension 411*/ 412_X_EXPORT Bool 413glXQueryExtension(Display * dpy, int *errorBase, int *eventBase) 414{ 415 int major_op, erb, evb; 416 Bool rv; 417 418 rv = XQueryExtension(dpy, GLX_EXTENSION_NAME, &major_op, &evb, &erb); 419 if (rv) { 420 if (errorBase) 421 *errorBase = erb; 422 if (eventBase) 423 *eventBase = evb; 424 } 425 return rv; 426} 427 428/* 429** Put a barrier in the token stream that forces the GL to finish its 430** work before X can proceed. 431*/ 432_X_EXPORT void 433glXWaitGL(void) 434{ 435 struct glx_context *gc = __glXGetCurrentContext(); 436 437 if (gc && gc->vtable->wait_gl) 438 gc->vtable->wait_gl(gc); 439} 440 441/* 442** Put a barrier in the token stream that forces X to finish its 443** work before GL can proceed. 444*/ 445_X_EXPORT void 446glXWaitX(void) 447{ 448 struct glx_context *gc = __glXGetCurrentContext(); 449 450 if (gc && gc->vtable->wait_x) 451 gc->vtable->wait_x(gc); 452} 453 454_X_EXPORT void 455glXUseXFont(Font font, int first, int count, int listBase) 456{ 457 struct glx_context *gc = __glXGetCurrentContext(); 458 459 if (gc && gc->vtable->use_x_font) 460 gc->vtable->use_x_font(gc, font, first, count, listBase); 461} 462 463/************************************************************************/ 464 465/* 466** Copy the source context to the destination context using the 467** attribute "mask". 468*/ 469_X_EXPORT void 470glXCopyContext(Display * dpy, GLXContext source_user, 471 GLXContext dest_user, unsigned long mask) 472{ 473 struct glx_context *source = (struct glx_context *) source_user; 474 struct glx_context *dest = (struct glx_context *) dest_user; 475#ifdef GLX_USE_APPLEGL 476 struct glx_context *gc = __glXGetCurrentContext(); 477 int errorcode; 478 bool x11error; 479 480 if(apple_glx_copy_context(gc->driContext, source->driContext, dest->driContext, 481 mask, &errorcode, &x11error)) { 482 __glXSendError(dpy, errorcode, 0, X_GLXCopyContext, x11error); 483 } 484 485#else 486 xGLXCopyContextReq *req; 487 struct glx_context *gc = __glXGetCurrentContext(); 488 GLXContextTag tag; 489 CARD8 opcode; 490 491 opcode = __glXSetupForCommand(dpy); 492 if (!opcode) { 493 return; 494 } 495 496#if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL) 497 if (gc->isDirect) { 498 /* NOT_DONE: This does not work yet */ 499 } 500#endif 501 502 /* 503 ** If the source is the current context, send its tag so that the context 504 ** can be flushed before the copy. 505 */ 506 if (source == gc && dpy == gc->currentDpy) { 507 tag = gc->currentContextTag; 508 } 509 else { 510 tag = 0; 511 } 512 513 /* Send the glXCopyContext request */ 514 LockDisplay(dpy); 515 GetReq(GLXCopyContext, req); 516 req->reqType = opcode; 517 req->glxCode = X_GLXCopyContext; 518 req->source = source ? source->xid : None; 519 req->dest = dest ? dest->xid : None; 520 req->mask = mask; 521 req->contextTag = tag; 522 UnlockDisplay(dpy); 523 SyncHandle(); 524#endif /* GLX_USE_APPLEGL */ 525} 526 527 528/** 529 * Determine if a context uses direct rendering. 530 * 531 * \param dpy Display where the context was created. 532 * \param contextID ID of the context to be tested. 533 * 534 * \returns \c GL_TRUE if the context is direct rendering or not. 535 */ 536static Bool 537__glXIsDirect(Display * dpy, GLXContextID contextID) 538{ 539#if !defined(USE_XCB) 540 xGLXIsDirectReq *req; 541 xGLXIsDirectReply reply; 542#endif 543 CARD8 opcode; 544 545 opcode = __glXSetupForCommand(dpy); 546 if (!opcode) { 547 return GL_FALSE; 548 } 549 550#ifdef USE_XCB 551 xcb_connection_t *c = XGetXCBConnection(dpy); 552 xcb_glx_is_direct_reply_t *reply = xcb_glx_is_direct_reply(c, 553 xcb_glx_is_direct 554 (c, contextID), 555 NULL); 556 557 const Bool is_direct = reply->is_direct ? True : False; 558 free(reply); 559 560 return is_direct; 561#else 562 /* Send the glXIsDirect request */ 563 LockDisplay(dpy); 564 GetReq(GLXIsDirect, req); 565 req->reqType = opcode; 566 req->glxCode = X_GLXIsDirect; 567 req->context = contextID; 568 _XReply(dpy, (xReply *) & reply, 0, False); 569 UnlockDisplay(dpy); 570 SyncHandle(); 571 572 return reply.isDirect; 573#endif /* USE_XCB */ 574} 575 576/** 577 * \todo 578 * Shouldn't this function \b always return \c GL_FALSE when 579 * \c GLX_DIRECT_RENDERING is not defined? Do we really need to bother with 580 * the GLX protocol here at all? 581 */ 582_X_EXPORT Bool 583glXIsDirect(Display * dpy, GLXContext gc_user) 584{ 585 struct glx_context *gc = (struct glx_context *) gc_user; 586 587 if (!gc) { 588 return GL_FALSE; 589 } 590 else if (gc->isDirect) { 591 return GL_TRUE; 592 } 593#ifdef GLX_USE_APPLEGL /* TODO: indirect on darwin */ 594 return GL_FALSE; 595#else 596 return __glXIsDirect(dpy, gc->xid); 597#endif 598} 599 600_X_EXPORT GLXPixmap 601glXCreateGLXPixmap(Display * dpy, XVisualInfo * vis, Pixmap pixmap) 602{ 603#ifdef GLX_USE_APPLEGL 604 int screen = vis->screen; 605 struct glx_screen *const psc = GetGLXScreenConfigs(dpy, screen); 606 const struct glx_config *config; 607 608 config = glx_config_find_visual(psc->visuals, vis->visualid); 609 610 if(apple_glx_pixmap_create(dpy, vis->screen, pixmap, config)) 611 return None; 612 613 return pixmap; 614#else 615 xGLXCreateGLXPixmapReq *req; 616 GLXPixmap xid; 617 CARD8 opcode; 618 619 opcode = __glXSetupForCommand(dpy); 620 if (!opcode) { 621 return None; 622 } 623 624 /* Send the glXCreateGLXPixmap request */ 625 LockDisplay(dpy); 626 GetReq(GLXCreateGLXPixmap, req); 627 req->reqType = opcode; 628 req->glxCode = X_GLXCreateGLXPixmap; 629 req->screen = vis->screen; 630 req->visual = vis->visualid; 631 req->pixmap = pixmap; 632 req->glxpixmap = xid = XAllocID(dpy); 633 UnlockDisplay(dpy); 634 SyncHandle(); 635 636#if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL) 637 do { 638 /* FIXME: Maybe delay __DRIdrawable creation until the drawable 639 * is actually bound to a context... */ 640 641 struct glx_display *const priv = __glXInitialize(dpy); 642 __GLXDRIdrawable *pdraw; 643 struct glx_screen *psc; 644 struct glx_config *config; 645 646 psc = priv->screens[vis->screen]; 647 if (psc->driScreen == NULL) 648 break; 649 config = glx_config_find_visual(psc->visuals, vis->visualid); 650 pdraw = psc->driScreen->createDrawable(psc, pixmap, xid, config); 651 if (pdraw == NULL) { 652 fprintf(stderr, "failed to create pixmap\n"); 653 break; 654 } 655 656 if (__glxHashInsert(priv->drawHash, xid, pdraw)) { 657 (*pdraw->destroyDrawable) (pdraw); 658 return None; /* FIXME: Check what we're supposed to do here... */ 659 } 660 } while (0); 661#endif 662 663 return xid; 664#endif 665} 666 667/* 668** Destroy the named pixmap 669*/ 670_X_EXPORT void 671glXDestroyGLXPixmap(Display * dpy, GLXPixmap glxpixmap) 672{ 673#ifdef GLX_USE_APPLEGL 674 if(apple_glx_pixmap_destroy(dpy, glxpixmap)) 675 __glXSendError(dpy, GLXBadPixmap, glxpixmap, X_GLXDestroyPixmap, false); 676#else 677 xGLXDestroyGLXPixmapReq *req; 678 CARD8 opcode; 679 680 opcode = __glXSetupForCommand(dpy); 681 if (!opcode) { 682 return; 683 } 684 685 /* Send the glXDestroyGLXPixmap request */ 686 LockDisplay(dpy); 687 GetReq(GLXDestroyGLXPixmap, req); 688 req->reqType = opcode; 689 req->glxCode = X_GLXDestroyGLXPixmap; 690 req->glxpixmap = glxpixmap; 691 UnlockDisplay(dpy); 692 SyncHandle(); 693 694#if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL) 695 { 696 struct glx_display *const priv = __glXInitialize(dpy); 697 __GLXDRIdrawable *pdraw = GetGLXDRIDrawable(dpy, glxpixmap); 698 699 if (pdraw != NULL) { 700 (*pdraw->destroyDrawable) (pdraw); 701 __glxHashDelete(priv->drawHash, glxpixmap); 702 } 703 } 704#endif 705#endif /* GLX_USE_APPLEGL */ 706} 707 708_X_EXPORT void 709glXSwapBuffers(Display * dpy, GLXDrawable drawable) 710{ 711#ifdef GLX_USE_APPLEGL 712 struct glx_context * gc = __glXGetCurrentContext(); 713 if(gc && apple_glx_is_current_drawable(dpy, gc->driContext, drawable)) { 714 apple_glx_swap_buffers(gc->driContext); 715 } else { 716 __glXSendError(dpy, GLXBadCurrentWindow, 0, X_GLXSwapBuffers, false); 717 } 718#else 719 struct glx_context *gc; 720 GLXContextTag tag; 721 CARD8 opcode; 722#ifdef USE_XCB 723 xcb_connection_t *c; 724#else 725 xGLXSwapBuffersReq *req; 726#endif 727 728 gc = __glXGetCurrentContext(); 729 730#if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL) 731 __GLXDRIdrawable *pdraw = GetGLXDRIDrawable(dpy, drawable); 732 733 if (pdraw != NULL) { 734 if (gc && drawable == gc->currentDrawable) { 735 glFlush(); 736 } 737 738 (*pdraw->psc->driScreen->swapBuffers)(pdraw, 0, 0, 0); 739 return; 740 } 741#endif 742 743 opcode = __glXSetupForCommand(dpy); 744 if (!opcode) { 745 return; 746 } 747 748 /* 749 ** The calling thread may or may not have a current context. If it 750 ** does, send the context tag so the server can do a flush. 751 */ 752 if ((gc != NULL) && (dpy == gc->currentDpy) && 753 ((drawable == gc->currentDrawable) 754 || (drawable == gc->currentReadable))) { 755 tag = gc->currentContextTag; 756 } 757 else { 758 tag = 0; 759 } 760 761#ifdef USE_XCB 762 c = XGetXCBConnection(dpy); 763 xcb_glx_swap_buffers(c, tag, drawable); 764 xcb_flush(c); 765#else 766 /* Send the glXSwapBuffers request */ 767 LockDisplay(dpy); 768 GetReq(GLXSwapBuffers, req); 769 req->reqType = opcode; 770 req->glxCode = X_GLXSwapBuffers; 771 req->drawable = drawable; 772 req->contextTag = tag; 773 UnlockDisplay(dpy); 774 SyncHandle(); 775 XFlush(dpy); 776#endif /* USE_XCB */ 777#endif /* GLX_USE_APPLEGL */ 778} 779 780 781/* 782** Return configuration information for the given display, screen and 783** visual combination. 784*/ 785_X_EXPORT int 786glXGetConfig(Display * dpy, XVisualInfo * vis, int attribute, 787 int *value_return) 788{ 789 struct glx_display *priv; 790 struct glx_screen *psc; 791 struct glx_config *config; 792 int status; 793 794 status = GetGLXPrivScreenConfig(dpy, vis->screen, &priv, &psc); 795 if (status == Success) { 796 config = glx_config_find_visual(psc->visuals, vis->visualid); 797 798 /* Lookup attribute after first finding a match on the visual */ 799 if (config != NULL) { 800 return glx_config_get(config, attribute, value_return); 801 } 802 803 status = GLX_BAD_VISUAL; 804 } 805 806 /* 807 ** If we can't find the config for this visual, this visual is not 808 ** supported by the OpenGL implementation on the server. 809 */ 810 if ((status == GLX_BAD_VISUAL) && (attribute == GLX_USE_GL)) { 811 *value_return = GL_FALSE; 812 status = Success; 813 } 814 815 return status; 816} 817 818/************************************************************************/ 819 820static void 821init_fbconfig_for_chooser(struct glx_config * config, 822 GLboolean fbconfig_style_tags) 823{ 824 memset(config, 0, sizeof(struct glx_config)); 825 config->visualID = (XID) GLX_DONT_CARE; 826 config->visualType = GLX_DONT_CARE; 827 828 /* glXChooseFBConfig specifies different defaults for these two than 829 * glXChooseVisual. 830 */ 831 if (fbconfig_style_tags) { 832 config->rgbMode = GL_TRUE; 833 config->doubleBufferMode = GLX_DONT_CARE; 834 } 835 836 config->visualRating = GLX_DONT_CARE; 837 config->transparentPixel = GLX_NONE; 838 config->transparentRed = GLX_DONT_CARE; 839 config->transparentGreen = GLX_DONT_CARE; 840 config->transparentBlue = GLX_DONT_CARE; 841 config->transparentAlpha = GLX_DONT_CARE; 842 config->transparentIndex = GLX_DONT_CARE; 843 844 config->drawableType = GLX_WINDOW_BIT; 845 config->renderType = 846 (config->rgbMode) ? GLX_RGBA_BIT : GLX_COLOR_INDEX_BIT; 847 config->xRenderable = GLX_DONT_CARE; 848 config->fbconfigID = (GLXFBConfigID) (GLX_DONT_CARE); 849 850 config->swapMethod = GLX_DONT_CARE; 851} 852 853#define MATCH_DONT_CARE( param ) \ 854 do { \ 855 if ( ((int) a-> param != (int) GLX_DONT_CARE) \ 856 && (a-> param != b-> param) ) { \ 857 return False; \ 858 } \ 859 } while ( 0 ) 860 861#define MATCH_MINIMUM( param ) \ 862 do { \ 863 if ( ((int) a-> param != (int) GLX_DONT_CARE) \ 864 && (a-> param > b-> param) ) { \ 865 return False; \ 866 } \ 867 } while ( 0 ) 868 869#define MATCH_EXACT( param ) \ 870 do { \ 871 if ( a-> param != b-> param) { \ 872 return False; \ 873 } \ 874 } while ( 0 ) 875 876/* Test that all bits from a are contained in b */ 877#define MATCH_MASK(param) \ 878 do { \ 879 if ((a->param & ~b->param) != 0) \ 880 return False; \ 881 } while (0); 882 883/** 884 * Determine if two GLXFBConfigs are compatible. 885 * 886 * \param a Application specified config to test. 887 * \param b Server specified config to test against \c a. 888 */ 889static Bool 890fbconfigs_compatible(const struct glx_config * const a, 891 const struct glx_config * const b) 892{ 893 MATCH_DONT_CARE(doubleBufferMode); 894 MATCH_DONT_CARE(visualType); 895 MATCH_DONT_CARE(visualRating); 896 MATCH_DONT_CARE(xRenderable); 897 MATCH_DONT_CARE(fbconfigID); 898 MATCH_DONT_CARE(swapMethod); 899 900 MATCH_MINIMUM(rgbBits); 901 MATCH_MINIMUM(numAuxBuffers); 902 MATCH_MINIMUM(redBits); 903 MATCH_MINIMUM(greenBits); 904 MATCH_MINIMUM(blueBits); 905 MATCH_MINIMUM(alphaBits); 906 MATCH_MINIMUM(depthBits); 907 MATCH_MINIMUM(stencilBits); 908 MATCH_MINIMUM(accumRedBits); 909 MATCH_MINIMUM(accumGreenBits); 910 MATCH_MINIMUM(accumBlueBits); 911 MATCH_MINIMUM(accumAlphaBits); 912 MATCH_MINIMUM(sampleBuffers); 913 MATCH_MINIMUM(maxPbufferWidth); 914 MATCH_MINIMUM(maxPbufferHeight); 915 MATCH_MINIMUM(maxPbufferPixels); 916 MATCH_MINIMUM(samples); 917 918 MATCH_DONT_CARE(stereoMode); 919 MATCH_EXACT(level); 920 921 MATCH_MASK(drawableType); 922 MATCH_MASK(renderType); 923 924 /* There is a bug in a few of the XFree86 DDX drivers. They contain 925 * visuals with a "transparent type" of 0 when they really mean GLX_NONE. 926 * Technically speaking, it is a bug in the DDX driver, but there is 927 * enough of an installed base to work around the problem here. In any 928 * case, 0 is not a valid value of the transparent type, so we'll treat 0 929 * from the app as GLX_DONT_CARE. We'll consider GLX_NONE from the app and 930 * 0 from the server to be a match to maintain backward compatibility with 931 * the (broken) drivers. 932 */ 933 934 if (a->transparentPixel != (int) GLX_DONT_CARE && a->transparentPixel != 0) { 935 if (a->transparentPixel == GLX_NONE) { 936 if (b->transparentPixel != GLX_NONE && b->transparentPixel != 0) 937 return False; 938 } 939 else { 940 MATCH_EXACT(transparentPixel); 941 } 942 943 switch (a->transparentPixel) { 944 case GLX_TRANSPARENT_RGB: 945 MATCH_DONT_CARE(transparentRed); 946 MATCH_DONT_CARE(transparentGreen); 947 MATCH_DONT_CARE(transparentBlue); 948 MATCH_DONT_CARE(transparentAlpha); 949 break; 950 951 case GLX_TRANSPARENT_INDEX: 952 MATCH_DONT_CARE(transparentIndex); 953 break; 954 955 default: 956 break; 957 } 958 } 959 960 return True; 961} 962 963 964/* There's some trickly language in the GLX spec about how this is supposed 965 * to work. Basically, if a given component size is either not specified 966 * or the requested size is zero, it is supposed to act like PERFER_SMALLER. 967 * Well, that's really hard to do with the code as-is. This behavior is 968 * closer to correct, but still not technically right. 969 */ 970#define PREFER_LARGER_OR_ZERO(comp) \ 971 do { \ 972 if ( ((*a)-> comp) != ((*b)-> comp) ) { \ 973 if ( ((*a)-> comp) == 0 ) { \ 974 return -1; \ 975 } \ 976 else if ( ((*b)-> comp) == 0 ) { \ 977 return 1; \ 978 } \ 979 else { \ 980 return ((*b)-> comp) - ((*a)-> comp) ; \ 981 } \ 982 } \ 983 } while( 0 ) 984 985#define PREFER_LARGER(comp) \ 986 do { \ 987 if ( ((*a)-> comp) != ((*b)-> comp) ) { \ 988 return ((*b)-> comp) - ((*a)-> comp) ; \ 989 } \ 990 } while( 0 ) 991 992#define PREFER_SMALLER(comp) \ 993 do { \ 994 if ( ((*a)-> comp) != ((*b)-> comp) ) { \ 995 return ((*a)-> comp) - ((*b)-> comp) ; \ 996 } \ 997 } while( 0 ) 998 999/** 1000 * Compare two GLXFBConfigs. This function is intended to be used as the 1001 * compare function passed in to qsort. 1002 * 1003 * \returns If \c a is a "better" config, according to the specification of 1004 * SGIX_fbconfig, a number less than zero is returned. If \c b is 1005 * better, then a number greater than zero is return. If both are 1006 * equal, zero is returned. 1007 * \sa qsort, glXChooseVisual, glXChooseFBConfig, glXChooseFBConfigSGIX 1008 */ 1009static int 1010fbconfig_compare(struct glx_config **a, struct glx_config **b) 1011{ 1012 /* The order of these comparisons must NOT change. It is defined by 1013 * the GLX 1.3 spec and ARB_multisample. 1014 */ 1015 1016 PREFER_SMALLER(visualSelectGroup); 1017 1018 /* The sort order for the visualRating is GLX_NONE, GLX_SLOW, and 1019 * GLX_NON_CONFORMANT_CONFIG. It just so happens that this is the 1020 * numerical sort order of the enums (0x8000, 0x8001, and 0x800D). 1021 */ 1022 PREFER_SMALLER(visualRating); 1023 1024 /* This isn't quite right. It is supposed to compare the sum of the 1025 * components the user specifically set minimums for. 1026 */ 1027 PREFER_LARGER_OR_ZERO(redBits); 1028 PREFER_LARGER_OR_ZERO(greenBits); 1029 PREFER_LARGER_OR_ZERO(blueBits); 1030 PREFER_LARGER_OR_ZERO(alphaBits); 1031 1032 PREFER_SMALLER(rgbBits); 1033 1034 if (((*a)->doubleBufferMode != (*b)->doubleBufferMode)) { 1035 /* Prefer single-buffer. 1036 */ 1037 return (!(*a)->doubleBufferMode) ? -1 : 1; 1038 } 1039 1040 PREFER_SMALLER(numAuxBuffers); 1041 1042 PREFER_LARGER_OR_ZERO(depthBits); 1043 PREFER_SMALLER(stencilBits); 1044 1045 /* This isn't quite right. It is supposed to compare the sum of the 1046 * components the user specifically set minimums for. 1047 */ 1048 PREFER_LARGER_OR_ZERO(accumRedBits); 1049 PREFER_LARGER_OR_ZERO(accumGreenBits); 1050 PREFER_LARGER_OR_ZERO(accumBlueBits); 1051 PREFER_LARGER_OR_ZERO(accumAlphaBits); 1052 1053 PREFER_SMALLER(visualType); 1054 1055 /* None of the multisample specs say where this comparison should happen, 1056 * so I put it near the end. 1057 */ 1058 PREFER_SMALLER(sampleBuffers); 1059 PREFER_SMALLER(samples); 1060 1061 /* None of the pbuffer or fbconfig specs say that this comparison needs 1062 * to happen at all, but it seems like it should. 1063 */ 1064 PREFER_LARGER(maxPbufferWidth); 1065 PREFER_LARGER(maxPbufferHeight); 1066 PREFER_LARGER(maxPbufferPixels); 1067 1068 return 0; 1069} 1070 1071 1072/** 1073 * Selects and sorts a subset of the supplied configs based on the attributes. 1074 * This function forms to basis of \c glXChooseVisual, \c glXChooseFBConfig, 1075 * and \c glXChooseFBConfigSGIX. 1076 * 1077 * \param configs Array of pointers to possible configs. The elements of 1078 * this array that do not meet the criteria will be set to 1079 * NULL. The remaining elements will be sorted according to 1080 * the various visual / FBConfig selection rules. 1081 * \param num_configs Number of elements in the \c configs array. 1082 * \param attribList Attributes used select from \c configs. This array is 1083 * terminated by a \c None tag. The array can either take 1084 * the form expected by \c glXChooseVisual (where boolean 1085 * tags do not have a value) or by \c glXChooseFBConfig 1086 * (where every tag has a value). 1087 * \param fbconfig_style_tags Selects whether \c attribList is in 1088 * \c glXChooseVisual style or 1089 * \c glXChooseFBConfig style. 1090 * \returns The number of valid elements left in \c configs. 1091 * 1092 * \sa glXChooseVisual, glXChooseFBConfig, glXChooseFBConfigSGIX 1093 */ 1094static int 1095choose_visual(struct glx_config ** configs, int num_configs, 1096 const int *attribList, GLboolean fbconfig_style_tags) 1097{ 1098 struct glx_config test_config; 1099 int base; 1100 int i; 1101 1102 /* This is a fairly direct implementation of the selection method 1103 * described by GLX_SGIX_fbconfig. Start by culling out all the 1104 * configs that are not compatible with the selected parameter 1105 * list. 1106 */ 1107 1108 init_fbconfig_for_chooser(&test_config, fbconfig_style_tags); 1109 __glXInitializeVisualConfigFromTags(&test_config, 512, 1110 (const INT32 *) attribList, 1111 GL_TRUE, fbconfig_style_tags); 1112 1113 base = 0; 1114 for (i = 0; i < num_configs; i++) { 1115 if (fbconfigs_compatible(&test_config, configs[i])) { 1116 configs[base] = configs[i]; 1117 base++; 1118 } 1119 } 1120 1121 if (base == 0) { 1122 return 0; 1123 } 1124 1125 if (base < num_configs) { 1126 (void) memset(&configs[base], 0, sizeof(void *) * (num_configs - base)); 1127 } 1128 1129 /* After the incompatible configs are removed, the resulting 1130 * list is sorted according to the rules set out in the various 1131 * specifications. 1132 */ 1133 1134 qsort(configs, base, sizeof(struct glx_config *), 1135 (int (*)(const void *, const void *)) fbconfig_compare); 1136 return base; 1137} 1138 1139 1140 1141 1142/* 1143** Return the visual that best matches the template. Return None if no 1144** visual matches the template. 1145*/ 1146_X_EXPORT XVisualInfo * 1147glXChooseVisual(Display * dpy, int screen, int *attribList) 1148{ 1149 XVisualInfo *visualList = NULL; 1150 struct glx_display *priv; 1151 struct glx_screen *psc; 1152 struct glx_config test_config; 1153 struct glx_config *config; 1154 struct glx_config *best_config = NULL; 1155 1156 /* 1157 ** Get a list of all visuals, return if list is empty 1158 */ 1159 if (GetGLXPrivScreenConfig(dpy, screen, &priv, &psc) != Success) { 1160 return None; 1161 } 1162 1163 1164 /* 1165 ** Build a template from the defaults and the attribute list 1166 ** Free visual list and return if an unexpected token is encountered 1167 */ 1168 init_fbconfig_for_chooser(&test_config, GL_FALSE); 1169 __glXInitializeVisualConfigFromTags(&test_config, 512, 1170 (const INT32 *) attribList, 1171 GL_TRUE, GL_FALSE); 1172 1173 /* 1174 ** Eliminate visuals that don't meet minimum requirements 1175 ** Compute a score for those that do 1176 ** Remember which visual, if any, got the highest score 1177 ** If no visual is acceptable, return None 1178 ** Otherwise, create an XVisualInfo list with just the selected X visual 1179 ** and return this. 1180 */ 1181 for (config = psc->visuals; config != NULL; config = config->next) { 1182 if (fbconfigs_compatible(&test_config, config) 1183 && ((best_config == NULL) || 1184 (fbconfig_compare (&config, &best_config) < 0))) { 1185 XVisualInfo visualTemplate; 1186 XVisualInfo *newList; 1187 int i; 1188 1189 visualTemplate.screen = screen; 1190 visualTemplate.visualid = config->visualID; 1191 newList = XGetVisualInfo(dpy, VisualScreenMask | VisualIDMask, 1192 &visualTemplate, &i); 1193 1194 if (newList) { 1195 Xfree(visualList); 1196 visualList = newList; 1197 best_config = config; 1198 } 1199 } 1200 } 1201 1202#ifdef GLX_USE_APPLEGL 1203 if(visualList && getenv("LIBGL_DUMP_VISUALID")) { 1204 printf("visualid 0x%lx\n", visualList[0].visualid); 1205 } 1206#endif 1207 1208 return visualList; 1209} 1210 1211 1212_X_EXPORT const char * 1213glXQueryExtensionsString(Display * dpy, int screen) 1214{ 1215 struct glx_screen *psc; 1216 struct glx_display *priv; 1217 1218 if (GetGLXPrivScreenConfig(dpy, screen, &priv, &psc) != Success) { 1219 return NULL; 1220 } 1221 1222 if (!psc->effectiveGLXexts) { 1223 if (!psc->serverGLXexts) { 1224 psc->serverGLXexts = 1225 __glXQueryServerString(dpy, priv->majorOpcode, screen, 1226 GLX_EXTENSIONS); 1227 } 1228 1229 __glXCalculateUsableExtensions(psc, 1230#if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL) 1231 (psc->driScreen != NULL), 1232#else 1233 GL_FALSE, 1234#endif 1235 priv->minorVersion); 1236 } 1237 1238 return psc->effectiveGLXexts; 1239} 1240 1241_X_EXPORT const char * 1242glXGetClientString(Display * dpy, int name) 1243{ 1244 (void) dpy; 1245 1246 switch (name) { 1247 case GLX_VENDOR: 1248 return (__glXGLXClientVendorName); 1249 case GLX_VERSION: 1250 return (__glXGLXClientVersion); 1251 case GLX_EXTENSIONS: 1252 return (__glXGetClientExtensions()); 1253 default: 1254 return NULL; 1255 } 1256} 1257 1258_X_EXPORT const char * 1259glXQueryServerString(Display * dpy, int screen, int name) 1260{ 1261 struct glx_screen *psc; 1262 struct glx_display *priv; 1263 const char **str; 1264 1265 1266 if (GetGLXPrivScreenConfig(dpy, screen, &priv, &psc) != Success) { 1267 return NULL; 1268 } 1269 1270 switch (name) { 1271 case GLX_VENDOR: 1272 str = &priv->serverGLXvendor; 1273 break; 1274 case GLX_VERSION: 1275 str = &priv->serverGLXversion; 1276 break; 1277 case GLX_EXTENSIONS: 1278 str = &psc->serverGLXexts; 1279 break; 1280 default: 1281 return NULL; 1282 } 1283 1284 if (*str == NULL) { 1285 *str = __glXQueryServerString(dpy, priv->majorOpcode, screen, name); 1286 } 1287 1288 return *str; 1289} 1290 1291void 1292__glXClientInfo(Display * dpy, int opcode) 1293{ 1294 char *ext_str = __glXGetClientGLExtensionString(); 1295 int size = strlen(ext_str) + 1; 1296 1297#ifdef USE_XCB 1298 xcb_connection_t *c = XGetXCBConnection(dpy); 1299 xcb_glx_client_info(c, 1300 GLX_MAJOR_VERSION, GLX_MINOR_VERSION, size, ext_str); 1301#else 1302 xGLXClientInfoReq *req; 1303 1304 /* Send the glXClientInfo request */ 1305 LockDisplay(dpy); 1306 GetReq(GLXClientInfo, req); 1307 req->reqType = opcode; 1308 req->glxCode = X_GLXClientInfo; 1309 req->major = GLX_MAJOR_VERSION; 1310 req->minor = GLX_MINOR_VERSION; 1311 1312 req->length += (size + 3) >> 2; 1313 req->numbytes = size; 1314 Data(dpy, ext_str, size); 1315 1316 UnlockDisplay(dpy); 1317 SyncHandle(); 1318#endif /* USE_XCB */ 1319 1320 Xfree(ext_str); 1321} 1322 1323 1324/* 1325** EXT_import_context 1326*/ 1327 1328_X_EXPORT Display * 1329glXGetCurrentDisplay(void) 1330{ 1331 struct glx_context *gc = __glXGetCurrentContext(); 1332 if (NULL == gc) 1333 return NULL; 1334 return gc->currentDpy; 1335} 1336 1337_X_EXPORT 1338GLX_ALIAS(Display *, glXGetCurrentDisplayEXT, (void), (), 1339 glXGetCurrentDisplay) 1340 1341#ifndef GLX_USE_APPLEGL 1342_X_EXPORT GLXContext 1343glXImportContextEXT(Display *dpy, GLXContextID contextID) 1344{ 1345 struct glx_display *priv = __glXInitialize(dpy); 1346 struct glx_screen *psc; 1347 xGLXQueryContextReply reply; 1348 CARD8 opcode; 1349 struct glx_context *ctx; 1350 int propList[__GLX_MAX_CONTEXT_PROPS * 2], *pProp, nPropListBytes; 1351 int i, renderType; 1352 XID share; 1353 struct glx_config *mode; 1354 1355 if (contextID == None || __glXIsDirect(dpy, contextID)) 1356 return NULL; 1357 1358 opcode = __glXSetupForCommand(dpy); 1359 if (!opcode) 1360 return 0; 1361 1362 /* Send the glXQueryContextInfoEXT request */ 1363 LockDisplay(dpy); 1364 1365 if (priv->majorVersion > 1 || priv->minorVersion >= 3) { 1366 xGLXQueryContextReq *req; 1367 1368 GetReq(GLXQueryContext, req); 1369 1370 req->reqType = opcode; 1371 req->glxCode = X_GLXQueryContext; 1372 req->context = contextID; 1373 } 1374 else { 1375 xGLXVendorPrivateReq *vpreq; 1376 xGLXQueryContextInfoEXTReq *req; 1377 1378 GetReqExtra(GLXVendorPrivate, 1379 sz_xGLXQueryContextInfoEXTReq - sz_xGLXVendorPrivateReq, 1380 vpreq); 1381 req = (xGLXQueryContextInfoEXTReq *) vpreq; 1382 req->reqType = opcode; 1383 req->glxCode = X_GLXVendorPrivateWithReply; 1384 req->vendorCode = X_GLXvop_QueryContextInfoEXT; 1385 req->context = contextID; 1386 } 1387 1388 _XReply(dpy, (xReply *) & reply, 0, False); 1389 1390 if (reply.n <= __GLX_MAX_CONTEXT_PROPS) 1391 nPropListBytes = reply.n * 2 * sizeof propList[0]; 1392 else 1393 nPropListBytes = 0; 1394 _XRead(dpy, (char *) propList, nPropListBytes); 1395 UnlockDisplay(dpy); 1396 SyncHandle(); 1397 1398 /* Look up screen first so we can look up visuals/fbconfigs later */ 1399 psc = NULL; 1400 for (i = 0, pProp = propList; i < reply.n; i++, pProp += 2) 1401 if (pProp[0] == GLX_SCREEN) 1402 psc = GetGLXScreenConfigs(dpy, pProp[1]); 1403 if (psc == NULL) 1404 return NULL; 1405 1406 share = None; 1407 mode = NULL; 1408 renderType = 0; 1409 pProp = propList; 1410 1411 for (i = 0, pProp = propList; i < reply.n; i++, pProp += 2) 1412 switch (pProp[0]) { 1413 case GLX_SHARE_CONTEXT_EXT: 1414 share = pProp[1]; 1415 break; 1416 case GLX_VISUAL_ID_EXT: 1417 mode = glx_config_find_visual(psc->visuals, pProp[1]); 1418 break; 1419 case GLX_FBCONFIG_ID: 1420 mode = glx_config_find_fbconfig(psc->configs, pProp[1]); 1421 break; 1422 case GLX_RENDER_TYPE: 1423 renderType = pProp[1]; 1424 break; 1425 } 1426 1427 if (mode == NULL) 1428 return NULL; 1429 1430 ctx = indirect_create_context(psc, mode, NULL, renderType); 1431 if (ctx == NULL) 1432 return NULL; 1433 1434 ctx->xid = contextID; 1435 ctx->imported = GL_TRUE; 1436 ctx->share_xid = share; 1437 1438 return (GLXContext) ctx; 1439} 1440 1441#endif 1442 1443_X_EXPORT int 1444glXQueryContext(Display * dpy, GLXContext ctx_user, int attribute, int *value) 1445{ 1446 struct glx_context *ctx = (struct glx_context *) ctx_user; 1447 1448 switch (attribute) { 1449 case GLX_SHARE_CONTEXT_EXT: 1450 *value = ctx->share_xid; 1451 break; 1452 case GLX_VISUAL_ID_EXT: 1453 *value = ctx->config ? ctx->config->visualID : None; 1454 break; 1455 case GLX_SCREEN: 1456 *value = ctx->screen; 1457 break; 1458 case GLX_FBCONFIG_ID: 1459 *value = ctx->config ? ctx->config->fbconfigID : None; 1460 break; 1461 case GLX_RENDER_TYPE: 1462 *value = ctx->renderType; 1463 break; 1464 default: 1465 return GLX_BAD_ATTRIBUTE; 1466 } 1467 return Success; 1468} 1469 1470_X_EXPORT 1471GLX_ALIAS(int, glXQueryContextInfoEXT, 1472 (Display * dpy, GLXContext ctx, int attribute, int *value), 1473 (dpy, ctx, attribute, value), glXQueryContext) 1474 1475_X_EXPORT GLXContextID glXGetContextIDEXT(const GLXContext ctx_user) 1476{ 1477 struct glx_context *ctx = (struct glx_context *) ctx_user; 1478 1479 return ctx->xid; 1480} 1481 1482_X_EXPORT void 1483glXFreeContextEXT(Display * dpy, GLXContext ctx) 1484{ 1485 DestroyContext(dpy, ctx); 1486} 1487 1488 1489_X_EXPORT GLXFBConfig * 1490glXChooseFBConfig(Display * dpy, int screen, 1491 const int *attribList, int *nitems) 1492{ 1493 struct glx_config **config_list; 1494 int list_size; 1495 1496 1497 config_list = (struct glx_config **) 1498 glXGetFBConfigs(dpy, screen, &list_size); 1499 1500 if ((config_list != NULL) && (list_size > 0) && (attribList != NULL)) { 1501 list_size = choose_visual(config_list, list_size, attribList, GL_TRUE); 1502 if (list_size == 0) { 1503 XFree(config_list); 1504 config_list = NULL; 1505 } 1506 } 1507 1508 *nitems = list_size; 1509 return (GLXFBConfig *) config_list; 1510} 1511 1512 1513_X_EXPORT GLXContext 1514glXCreateNewContext(Display * dpy, GLXFBConfig fbconfig, 1515 int renderType, GLXContext shareList, Bool allowDirect) 1516{ 1517 struct glx_config *config = (struct glx_config *) fbconfig; 1518 1519 return CreateContext(dpy, config->fbconfigID, config, shareList, 1520 allowDirect, X_GLXCreateNewContext, renderType, 1521 config->screen); 1522} 1523 1524 1525_X_EXPORT GLXDrawable 1526glXGetCurrentReadDrawable(void) 1527{ 1528 struct glx_context *gc = __glXGetCurrentContext(); 1529 1530 return gc->currentReadable; 1531} 1532 1533 1534_X_EXPORT GLXFBConfig * 1535glXGetFBConfigs(Display * dpy, int screen, int *nelements) 1536{ 1537 struct glx_display *priv = __glXInitialize(dpy); 1538 struct glx_config **config_list = NULL; 1539 struct glx_config *config; 1540 unsigned num_configs = 0; 1541 int i; 1542 1543 *nelements = 0; 1544 if (priv && (priv->screens != NULL) 1545 && (screen >= 0) && (screen <= ScreenCount(dpy)) 1546 && (priv->screens[screen]->configs != NULL) 1547 && (priv->screens[screen]->configs->fbconfigID 1548 != (int) GLX_DONT_CARE)) { 1549 1550 for (config = priv->screens[screen]->configs; config != NULL; 1551 config = config->next) { 1552 if (config->fbconfigID != (int) GLX_DONT_CARE) { 1553 num_configs++; 1554 } 1555 } 1556 1557 config_list = Xmalloc(num_configs * sizeof *config_list); 1558 if (config_list != NULL) { 1559 *nelements = num_configs; 1560 i = 0; 1561 for (config = priv->screens[screen]->configs; config != NULL; 1562 config = config->next) { 1563 if (config->fbconfigID != (int) GLX_DONT_CARE) { 1564 config_list[i] = config; 1565 i++; 1566 } 1567 } 1568 } 1569 } 1570 1571 return (GLXFBConfig *) config_list; 1572} 1573 1574 1575_X_EXPORT int 1576glXGetFBConfigAttrib(Display * dpy, GLXFBConfig fbconfig, 1577 int attribute, int *value) 1578{ 1579 struct glx_config *config = ValidateGLXFBConfig(dpy, fbconfig); 1580 1581 if (config == NULL) 1582 return GLXBadFBConfig; 1583 1584 return glx_config_get(config, attribute, value); 1585} 1586 1587 1588_X_EXPORT XVisualInfo * 1589glXGetVisualFromFBConfig(Display * dpy, GLXFBConfig fbconfig) 1590{ 1591 XVisualInfo visualTemplate; 1592 struct glx_config *config = (struct glx_config *) fbconfig; 1593 int count; 1594 1595 /* 1596 ** Get a list of all visuals, return if list is empty 1597 */ 1598 visualTemplate.visualid = config->visualID; 1599 return XGetVisualInfo(dpy, VisualIDMask, &visualTemplate, &count); 1600} 1601 1602#ifndef GLX_USE_APPLEGL 1603/* 1604** GLX_SGI_swap_control 1605*/ 1606static int 1607__glXSwapIntervalSGI(int interval) 1608{ 1609 xGLXVendorPrivateReq *req; 1610 struct glx_context *gc = __glXGetCurrentContext(); 1611 struct glx_screen *psc; 1612 Display *dpy; 1613 CARD32 *interval_ptr; 1614 CARD8 opcode; 1615 1616 if (gc == NULL) { 1617 return GLX_BAD_CONTEXT; 1618 } 1619 1620 if (interval <= 0) { 1621 return GLX_BAD_VALUE; 1622 } 1623 1624 psc = GetGLXScreenConfigs( gc->currentDpy, gc->screen); 1625 1626#ifdef GLX_DIRECT_RENDERING 1627 if (gc->isDirect && psc->driScreen && psc->driScreen->setSwapInterval) { 1628 __GLXDRIdrawable *pdraw = 1629 GetGLXDRIDrawable(gc->currentDpy, gc->currentDrawable); 1630 psc->driScreen->setSwapInterval(pdraw, interval); 1631 return 0; 1632 } 1633#endif 1634 1635 dpy = gc->currentDpy; 1636 opcode = __glXSetupForCommand(dpy); 1637 if (!opcode) { 1638 return 0; 1639 } 1640 1641 /* Send the glXSwapIntervalSGI request */ 1642 LockDisplay(dpy); 1643 GetReqExtra(GLXVendorPrivate, sizeof(CARD32), req); 1644 req->reqType = opcode; 1645 req->glxCode = X_GLXVendorPrivate; 1646 req->vendorCode = X_GLXvop_SwapIntervalSGI; 1647 req->contextTag = gc->currentContextTag; 1648 1649 interval_ptr = (CARD32 *) (req + 1); 1650 *interval_ptr = interval; 1651 1652 UnlockDisplay(dpy); 1653 SyncHandle(); 1654 XFlush(dpy); 1655 1656 return 0; 1657} 1658 1659 1660/* 1661** GLX_MESA_swap_control 1662*/ 1663static int 1664__glXSwapIntervalMESA(unsigned int interval) 1665{ 1666#ifdef GLX_DIRECT_RENDERING 1667 struct glx_context *gc = __glXGetCurrentContext(); 1668 1669 if (gc != NULL && gc->isDirect) { 1670 struct glx_screen *psc; 1671 1672 psc = GetGLXScreenConfigs( gc->currentDpy, gc->screen); 1673 if (psc->driScreen && psc->driScreen->setSwapInterval) { 1674 __GLXDRIdrawable *pdraw = 1675 GetGLXDRIDrawable(gc->currentDpy, gc->currentDrawable); 1676 return psc->driScreen->setSwapInterval(pdraw, interval); 1677 } 1678 } 1679#endif 1680 1681 return GLX_BAD_CONTEXT; 1682} 1683 1684 1685static int 1686__glXGetSwapIntervalMESA(void) 1687{ 1688#ifdef GLX_DIRECT_RENDERING 1689 struct glx_context *gc = __glXGetCurrentContext(); 1690 1691 if (gc != NULL && gc->isDirect) { 1692 struct glx_screen *psc; 1693 1694 psc = GetGLXScreenConfigs( gc->currentDpy, gc->screen); 1695 if (psc->driScreen && psc->driScreen->getSwapInterval) { 1696 __GLXDRIdrawable *pdraw = 1697 GetGLXDRIDrawable(gc->currentDpy, gc->currentDrawable); 1698 return psc->driScreen->getSwapInterval(pdraw); 1699 } 1700 } 1701#endif 1702 1703 return 0; 1704} 1705 1706 1707/* 1708** GLX_SGI_video_sync 1709*/ 1710static int 1711__glXGetVideoSyncSGI(unsigned int *count) 1712{ 1713 int64_t ust, msc, sbc; 1714 int ret; 1715 struct glx_context *gc = __glXGetCurrentContext(); 1716 struct glx_screen *psc; 1717#ifdef GLX_DIRECT_RENDERING 1718 __GLXDRIdrawable *pdraw; 1719#endif 1720 1721 if (!gc) 1722 return GLX_BAD_CONTEXT; 1723 1724#ifdef GLX_DIRECT_RENDERING 1725 if (!gc->isDirect) 1726 return GLX_BAD_CONTEXT; 1727#endif 1728 1729 psc = GetGLXScreenConfigs(gc->currentDpy, gc->screen); 1730#ifdef GLX_DIRECT_RENDERING 1731 pdraw = GetGLXDRIDrawable(gc->currentDpy, gc->currentDrawable); 1732#endif 1733 1734 /* FIXME: Looking at the GLX_SGI_video_sync spec in the extension registry, 1735 * FIXME: there should be a GLX encoding for this call. I can find no 1736 * FIXME: documentation for the GLX encoding. 1737 */ 1738#ifdef GLX_DIRECT_RENDERING 1739 if (psc->driScreen && psc->driScreen->getDrawableMSC) { 1740 ret = psc->driScreen->getDrawableMSC(psc, pdraw, &ust, &msc, &sbc); 1741 *count = (unsigned) msc; 1742 return (ret == True) ? 0 : GLX_BAD_CONTEXT; 1743 } 1744#endif 1745 1746 return GLX_BAD_CONTEXT; 1747} 1748 1749static int 1750__glXWaitVideoSyncSGI(int divisor, int remainder, unsigned int *count) 1751{ 1752 struct glx_context *gc = __glXGetCurrentContext(); 1753 struct glx_screen *psc; 1754#ifdef GLX_DIRECT_RENDERING 1755 __GLXDRIdrawable *pdraw; 1756#endif 1757 int64_t ust, msc, sbc; 1758 int ret; 1759 1760 if (divisor <= 0 || remainder < 0) 1761 return GLX_BAD_VALUE; 1762 1763 if (!gc) 1764 return GLX_BAD_CONTEXT; 1765 1766#ifdef GLX_DIRECT_RENDERING 1767 if (!gc->isDirect) 1768 return GLX_BAD_CONTEXT; 1769#endif 1770 1771 psc = GetGLXScreenConfigs( gc->currentDpy, gc->screen); 1772#ifdef GLX_DIRECT_RENDERING 1773 pdraw = GetGLXDRIDrawable(gc->currentDpy, gc->currentDrawable); 1774#endif 1775 1776#ifdef GLX_DIRECT_RENDERING 1777 if (psc->driScreen && psc->driScreen->waitForMSC) { 1778 ret = psc->driScreen->waitForMSC(pdraw, 0, divisor, remainder, &ust, &msc, 1779 &sbc); 1780 *count = (unsigned) msc; 1781 return (ret == True) ? 0 : GLX_BAD_CONTEXT; 1782 } 1783#endif 1784 1785 return GLX_BAD_CONTEXT; 1786} 1787 1788#endif /* GLX_USE_APPLEGL */ 1789 1790/* 1791** GLX_SGIX_fbconfig 1792** Many of these functions are aliased to GLX 1.3 entry points in the 1793** GLX_functions table. 1794*/ 1795 1796_X_EXPORT 1797GLX_ALIAS(int, glXGetFBConfigAttribSGIX, 1798 (Display * dpy, GLXFBConfigSGIX config, int attribute, int *value), 1799 (dpy, config, attribute, value), glXGetFBConfigAttrib) 1800 1801_X_EXPORT GLX_ALIAS(GLXFBConfigSGIX *, glXChooseFBConfigSGIX, 1802 (Display * dpy, int screen, int *attrib_list, 1803 int *nelements), (dpy, screen, attrib_list, nelements), 1804 glXChooseFBConfig) 1805 1806_X_EXPORT GLX_ALIAS(XVisualInfo *, glXGetVisualFromFBConfigSGIX, 1807 (Display * dpy, GLXFBConfigSGIX config), 1808 (dpy, config), glXGetVisualFromFBConfig) 1809 1810_X_EXPORT GLXPixmap 1811glXCreateGLXPixmapWithConfigSGIX(Display * dpy, 1812 GLXFBConfigSGIX fbconfig, 1813 Pixmap pixmap) 1814{ 1815#ifndef GLX_USE_APPLEGL 1816 xGLXVendorPrivateWithReplyReq *vpreq; 1817 xGLXCreateGLXPixmapWithConfigSGIXReq *req; 1818 GLXPixmap xid = None; 1819 CARD8 opcode; 1820 struct glx_screen *psc; 1821#endif 1822 struct glx_config *config = (struct glx_config *) fbconfig; 1823 1824 1825 if ((dpy == NULL) || (config == NULL)) { 1826 return None; 1827 } 1828#ifdef GLX_USE_APPLEGL 1829 if(apple_glx_pixmap_create(dpy, config->screen, pixmap, config)) 1830 return None; 1831 return pixmap; 1832#else 1833 1834 psc = GetGLXScreenConfigs(dpy, config->screen); 1835 if ((psc != NULL) 1836 && __glXExtensionBitIsEnabled(psc, SGIX_fbconfig_bit)) { 1837 opcode = __glXSetupForCommand(dpy); 1838 if (!opcode) { 1839 return None; 1840 } 1841 1842 /* Send the glXCreateGLXPixmapWithConfigSGIX request */ 1843 LockDisplay(dpy); 1844 GetReqExtra(GLXVendorPrivateWithReply, 1845 sz_xGLXCreateGLXPixmapWithConfigSGIXReq - 1846 sz_xGLXVendorPrivateWithReplyReq, vpreq); 1847 req = (xGLXCreateGLXPixmapWithConfigSGIXReq *) vpreq; 1848 req->reqType = opcode; 1849 req->glxCode = X_GLXVendorPrivateWithReply; 1850 req->vendorCode = X_GLXvop_CreateGLXPixmapWithConfigSGIX; 1851 req->screen = config->screen; 1852 req->fbconfig = config->fbconfigID; 1853 req->pixmap = pixmap; 1854 req->glxpixmap = xid = XAllocID(dpy); 1855 UnlockDisplay(dpy); 1856 SyncHandle(); 1857 } 1858 1859 return xid; 1860#endif 1861} 1862 1863_X_EXPORT GLXContext 1864glXCreateContextWithConfigSGIX(Display * dpy, 1865 GLXFBConfigSGIX fbconfig, int renderType, 1866 GLXContext shareList, Bool allowDirect) 1867{ 1868 GLXContext gc = NULL; 1869 struct glx_config *config = (struct glx_config *) fbconfig; 1870 struct glx_screen *psc; 1871 1872 1873 if ((dpy == NULL) || (config == NULL)) { 1874 return None; 1875 } 1876 1877 psc = GetGLXScreenConfigs(dpy, config->screen); 1878 if ((psc != NULL) 1879 && __glXExtensionBitIsEnabled(psc, SGIX_fbconfig_bit)) { 1880 gc = CreateContext(dpy, config->fbconfigID, config, shareList, 1881 allowDirect, 1882 X_GLXvop_CreateContextWithConfigSGIX, renderType, 1883 config->screen); 1884 } 1885 1886 return gc; 1887} 1888 1889 1890_X_EXPORT GLXFBConfigSGIX 1891glXGetFBConfigFromVisualSGIX(Display * dpy, XVisualInfo * vis) 1892{ 1893 struct glx_display *priv; 1894 struct glx_screen *psc = NULL; 1895 1896 if ((GetGLXPrivScreenConfig(dpy, vis->screen, &priv, &psc) == Success) 1897 && __glXExtensionBitIsEnabled(psc, SGIX_fbconfig_bit) 1898 && (psc->configs->fbconfigID != (int) GLX_DONT_CARE)) { 1899 return (GLXFBConfigSGIX) glx_config_find_visual(psc->configs, 1900 vis->visualid); 1901 } 1902 1903 return NULL; 1904} 1905 1906#ifndef GLX_USE_APPLEGL 1907/* 1908** GLX_SGIX_swap_group 1909*/ 1910static void 1911__glXJoinSwapGroupSGIX(Display * dpy, GLXDrawable drawable, 1912 GLXDrawable member) 1913{ 1914 (void) dpy; 1915 (void) drawable; 1916 (void) member; 1917} 1918 1919 1920/* 1921** GLX_SGIX_swap_barrier 1922*/ 1923static void 1924__glXBindSwapBarrierSGIX(Display * dpy, GLXDrawable drawable, int barrier) 1925{ 1926 (void) dpy; 1927 (void) drawable; 1928 (void) barrier; 1929} 1930 1931static Bool 1932__glXQueryMaxSwapBarriersSGIX(Display * dpy, int screen, int *max) 1933{ 1934 (void) dpy; 1935 (void) screen; 1936 (void) max; 1937 return False; 1938} 1939 1940 1941/* 1942** GLX_OML_sync_control 1943*/ 1944static Bool 1945__glXGetSyncValuesOML(Display * dpy, GLXDrawable drawable, 1946 int64_t * ust, int64_t * msc, int64_t * sbc) 1947{ 1948 struct glx_display * const priv = __glXInitialize(dpy); 1949 int ret; 1950#ifdef GLX_DIRECT_RENDERING 1951 __GLXDRIdrawable *pdraw; 1952#endif 1953 struct glx_screen *psc; 1954 1955 if (!priv) 1956 return False; 1957 1958#ifdef GLX_DIRECT_RENDERING 1959 pdraw = GetGLXDRIDrawable(dpy, drawable); 1960 psc = pdraw ? pdraw->psc : NULL; 1961 if (pdraw && psc->driScreen->getDrawableMSC) { 1962 ret = psc->driScreen->getDrawableMSC(psc, pdraw, ust, msc, sbc); 1963 return ret; 1964 } 1965#endif 1966 1967 return False; 1968} 1969 1970#if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL) 1971_X_HIDDEN GLboolean 1972__glxGetMscRate(__GLXDRIdrawable *glxDraw, 1973 int32_t * numerator, int32_t * denominator) 1974{ 1975#ifdef XF86VIDMODE 1976 struct glx_screen *psc; 1977 XF86VidModeModeLine mode_line; 1978 int dot_clock; 1979 int i; 1980 1981 psc = glxDraw->psc; 1982 if (XF86VidModeQueryVersion(psc->dpy, &i, &i) && 1983 XF86VidModeGetModeLine(psc->dpy, psc->scr, &dot_clock, &mode_line)) { 1984 unsigned n = dot_clock * 1000; 1985 unsigned d = mode_line.vtotal * mode_line.htotal; 1986 1987# define V_INTERLACE 0x010 1988# define V_DBLSCAN 0x020 1989 1990 if (mode_line.flags & V_INTERLACE) 1991 n *= 2; 1992 else if (mode_line.flags & V_DBLSCAN) 1993 d *= 2; 1994 1995 /* The OML_sync_control spec requires that if the refresh rate is a 1996 * whole number, that the returned numerator be equal to the refresh 1997 * rate and the denominator be 1. 1998 */ 1999 2000 if (n % d == 0) { 2001 n /= d; 2002 d = 1; 2003 } 2004 else { 2005 static const unsigned f[] = { 13, 11, 7, 5, 3, 2, 0 }; 2006 2007 /* This is a poor man's way to reduce a fraction. It's far from 2008 * perfect, but it will work well enough for this situation. 2009 */ 2010 2011 for (i = 0; f[i] != 0; i++) { 2012 while (n % f[i] == 0 && d % f[i] == 0) { 2013 d /= f[i]; 2014 n /= f[i]; 2015 } 2016 } 2017 } 2018 2019 *numerator = n; 2020 *denominator = d; 2021 2022 return True; 2023 } 2024 else 2025#endif 2026 2027 return False; 2028} 2029#endif 2030 2031/** 2032 * Determine the refresh rate of the specified drawable and display. 2033 * 2034 * \param dpy Display whose refresh rate is to be determined. 2035 * \param drawable Drawable whose refresh rate is to be determined. 2036 * \param numerator Numerator of the refresh rate. 2037 * \param demoninator Denominator of the refresh rate. 2038 * \return If the refresh rate for the specified display and drawable could 2039 * be calculated, True is returned. Otherwise False is returned. 2040 * 2041 * \note This function is implemented entirely client-side. A lot of other 2042 * functionality is required to export GLX_OML_sync_control, so on 2043 * XFree86 this function can be called for direct-rendering contexts 2044 * when GLX_OML_sync_control appears in the client extension string. 2045 */ 2046 2047_X_HIDDEN GLboolean 2048__glXGetMscRateOML(Display * dpy, GLXDrawable drawable, 2049 int32_t * numerator, int32_t * denominator) 2050{ 2051#if defined( GLX_DIRECT_RENDERING ) && defined( XF86VIDMODE ) 2052 __GLXDRIdrawable *draw = GetGLXDRIDrawable(dpy, drawable); 2053 2054 if (draw == NULL) 2055 return False; 2056 2057 return __glxGetMscRate(draw, numerator, denominator); 2058#else 2059 (void) dpy; 2060 (void) drawable; 2061 (void) numerator; 2062 (void) denominator; 2063#endif 2064 return False; 2065} 2066 2067 2068static int64_t 2069__glXSwapBuffersMscOML(Display * dpy, GLXDrawable drawable, 2070 int64_t target_msc, int64_t divisor, int64_t remainder) 2071{ 2072 struct glx_context *gc = __glXGetCurrentContext(); 2073#ifdef GLX_DIRECT_RENDERING 2074 __GLXDRIdrawable *pdraw = GetGLXDRIDrawable(dpy, drawable); 2075 struct glx_screen *psc = pdraw ? pdraw->psc : NULL; 2076#endif 2077 2078 if (!gc) /* no GLX for this */ 2079 return -1; 2080 2081#ifdef GLX_DIRECT_RENDERING 2082 if (!pdraw || !gc->isDirect) 2083 return -1; 2084#endif 2085 2086 /* The OML_sync_control spec says these should "generate a GLX_BAD_VALUE 2087 * error", but it also says "It [glXSwapBuffersMscOML] will return a value 2088 * of -1 if the function failed because of errors detected in the input 2089 * parameters" 2090 */ 2091 if (divisor < 0 || remainder < 0 || target_msc < 0) 2092 return -1; 2093 if (divisor > 0 && remainder >= divisor) 2094 return -1; 2095 2096 if (target_msc == 0 && divisor == 0 && remainder == 0) 2097 remainder = 1; 2098 2099#ifdef GLX_DIRECT_RENDERING 2100 if (psc->driScreen && psc->driScreen->swapBuffers) 2101 return (*psc->driScreen->swapBuffers)(pdraw, target_msc, divisor, 2102 remainder); 2103#endif 2104 2105 return -1; 2106} 2107 2108 2109static Bool 2110__glXWaitForMscOML(Display * dpy, GLXDrawable drawable, 2111 int64_t target_msc, int64_t divisor, 2112 int64_t remainder, int64_t * ust, 2113 int64_t * msc, int64_t * sbc) 2114{ 2115#ifdef GLX_DIRECT_RENDERING 2116 __GLXDRIdrawable *pdraw = GetGLXDRIDrawable(dpy, drawable); 2117 struct glx_screen *psc = pdraw ? pdraw->psc : NULL; 2118 int ret; 2119#endif 2120 2121 2122 /* The OML_sync_control spec says these should "generate a GLX_BAD_VALUE 2123 * error", but the return type in the spec is Bool. 2124 */ 2125 if (divisor < 0 || remainder < 0 || target_msc < 0) 2126 return False; 2127 if (divisor > 0 && remainder >= divisor) 2128 return False; 2129 2130#ifdef GLX_DIRECT_RENDERING 2131 if (pdraw && psc->driScreen && psc->driScreen->waitForMSC) { 2132 ret = psc->driScreen->waitForMSC(pdraw, target_msc, divisor, remainder, 2133 ust, msc, sbc); 2134 return ret; 2135 } 2136#endif 2137 2138 return False; 2139} 2140 2141 2142static Bool 2143__glXWaitForSbcOML(Display * dpy, GLXDrawable drawable, 2144 int64_t target_sbc, int64_t * ust, 2145 int64_t * msc, int64_t * sbc) 2146{ 2147#ifdef GLX_DIRECT_RENDERING 2148 __GLXDRIdrawable *pdraw = GetGLXDRIDrawable(dpy, drawable); 2149 struct glx_screen *psc = pdraw ? pdraw->psc : NULL; 2150 int ret; 2151#endif 2152 2153 /* The OML_sync_control spec says this should "generate a GLX_BAD_VALUE 2154 * error", but the return type in the spec is Bool. 2155 */ 2156 if (target_sbc < 0) 2157 return False; 2158 2159#ifdef GLX_DIRECT_RENDERING 2160 if (pdraw && psc->driScreen && psc->driScreen->waitForSBC) { 2161 ret = psc->driScreen->waitForSBC(pdraw, target_sbc, ust, msc, sbc); 2162 return ret; 2163 } 2164#endif 2165 2166 return False; 2167} 2168 2169/*@}*/ 2170 2171 2172/** 2173 * Mesa extension stubs. These will help reduce portability problems. 2174 */ 2175/*@{*/ 2176 2177/** 2178 * Release all buffers associated with the specified GLX drawable. 2179 * 2180 * \todo 2181 * This function was intended for stand-alone Mesa. The issue there is that 2182 * the library doesn't get any notification when a window is closed. In 2183 * DRI there is a similar but slightly different issue. When GLX 1.3 is 2184 * supported, there are 3 different functions to destroy a drawable. It 2185 * should be possible to create GLX protocol (or have it determine which 2186 * protocol to use based on the type of the drawable) to have one function 2187 * do the work of 3. For the direct-rendering case, this function could 2188 * just call the driver's \c __DRIdrawableRec::destroyDrawable function. 2189 * This would reduce the frequency with which \c __driGarbageCollectDrawables 2190 * would need to be used. This really should be done as part of the new DRI 2191 * interface work. 2192 * 2193 * \sa http://oss.sgi.com/projects/ogl-sample/registry/MESA/release_buffers.txt 2194 * __driGarbageCollectDrawables 2195 * glXDestroyGLXPixmap 2196 * glXDestroyPbuffer glXDestroyPixmap glXDestroyWindow 2197 * glXDestroyGLXPbufferSGIX glXDestroyGLXVideoSourceSGIX 2198 */ 2199static Bool 2200__glXReleaseBuffersMESA(Display * dpy, GLXDrawable d) 2201{ 2202 (void) dpy; 2203 (void) d; 2204 return False; 2205} 2206 2207 2208_X_EXPORT GLXPixmap 2209glXCreateGLXPixmapMESA(Display * dpy, XVisualInfo * visual, 2210 Pixmap pixmap, Colormap cmap) 2211{ 2212 (void) dpy; 2213 (void) visual; 2214 (void) pixmap; 2215 (void) cmap; 2216 return 0; 2217} 2218 2219/*@}*/ 2220 2221 2222/** 2223 * GLX_MESA_copy_sub_buffer 2224 */ 2225#define X_GLXvop_CopySubBufferMESA 5154 /* temporary */ 2226static void 2227__glXCopySubBufferMESA(Display * dpy, GLXDrawable drawable, 2228 int x, int y, int width, int height) 2229{ 2230 xGLXVendorPrivateReq *req; 2231 struct glx_context *gc; 2232 GLXContextTag tag; 2233 CARD32 *drawable_ptr; 2234 INT32 *x_ptr, *y_ptr, *w_ptr, *h_ptr; 2235 CARD8 opcode; 2236 2237#if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL) 2238 __GLXDRIdrawable *pdraw = GetGLXDRIDrawable(dpy, drawable); 2239 if (pdraw != NULL) { 2240 struct glx_screen *psc = pdraw->psc; 2241 if (psc->driScreen->copySubBuffer != NULL) { 2242 glFlush(); 2243 (*psc->driScreen->copySubBuffer) (pdraw, x, y, width, height); 2244 } 2245 2246 return; 2247 } 2248#endif 2249 2250 opcode = __glXSetupForCommand(dpy); 2251 if (!opcode) 2252 return; 2253 2254 /* 2255 ** The calling thread may or may not have a current context. If it 2256 ** does, send the context tag so the server can do a flush. 2257 */ 2258 gc = __glXGetCurrentContext(); 2259 if ((gc != NULL) && (dpy == gc->currentDpy) && 2260 ((drawable == gc->currentDrawable) || 2261 (drawable == gc->currentReadable))) { 2262 tag = gc->currentContextTag; 2263 } 2264 else { 2265 tag = 0; 2266 } 2267 2268 LockDisplay(dpy); 2269 GetReqExtra(GLXVendorPrivate, sizeof(CARD32) + sizeof(INT32) * 4, req); 2270 req->reqType = opcode; 2271 req->glxCode = X_GLXVendorPrivate; 2272 req->vendorCode = X_GLXvop_CopySubBufferMESA; 2273 req->contextTag = tag; 2274 2275 drawable_ptr = (CARD32 *) (req + 1); 2276 x_ptr = (INT32 *) (drawable_ptr + 1); 2277 y_ptr = (INT32 *) (drawable_ptr + 2); 2278 w_ptr = (INT32 *) (drawable_ptr + 3); 2279 h_ptr = (INT32 *) (drawable_ptr + 4); 2280 2281 *drawable_ptr = drawable; 2282 *x_ptr = x; 2283 *y_ptr = y; 2284 *w_ptr = width; 2285 *h_ptr = height; 2286 2287 UnlockDisplay(dpy); 2288 SyncHandle(); 2289} 2290 2291/*@{*/ 2292static void 2293__glXBindTexImageEXT(Display * dpy, 2294 GLXDrawable drawable, int buffer, const int *attrib_list) 2295{ 2296 struct glx_context *gc = __glXGetCurrentContext(); 2297 2298 if (gc == NULL || gc->vtable->bind_tex_image == NULL) 2299 return; 2300 2301 gc->vtable->bind_tex_image(dpy, drawable, buffer, attrib_list); 2302} 2303 2304static void 2305__glXReleaseTexImageEXT(Display * dpy, GLXDrawable drawable, int buffer) 2306{ 2307 struct glx_context *gc = __glXGetCurrentContext(); 2308 2309 if (gc == NULL || gc->vtable->release_tex_image == NULL) 2310 return; 2311 2312 gc->vtable->release_tex_image(dpy, drawable, buffer); 2313} 2314 2315/*@}*/ 2316 2317#endif /* GLX_USE_APPLEGL */ 2318 2319/** 2320 * \c strdup is actually not a standard ANSI C or POSIX routine. 2321 * Irix will not define it if ANSI mode is in effect. 2322 * 2323 * \sa strdup 2324 */ 2325_X_HIDDEN char * 2326__glXstrdup(const char *str) 2327{ 2328 char *copy; 2329 copy = (char *) Xmalloc(strlen(str) + 1); 2330 if (!copy) 2331 return NULL; 2332 strcpy(copy, str); 2333 return copy; 2334} 2335 2336/* 2337** glXGetProcAddress support 2338*/ 2339 2340struct name_address_pair 2341{ 2342 const char *Name; 2343 GLvoid *Address; 2344}; 2345 2346#define GLX_FUNCTION(f) { # f, (GLvoid *) f } 2347#define GLX_FUNCTION2(n,f) { # n, (GLvoid *) f } 2348 2349static const struct name_address_pair GLX_functions[] = { 2350 /*** GLX_VERSION_1_0 ***/ 2351 GLX_FUNCTION(glXChooseVisual), 2352 GLX_FUNCTION(glXCopyContext), 2353 GLX_FUNCTION(glXCreateContext), 2354 GLX_FUNCTION(glXCreateGLXPixmap), 2355 GLX_FUNCTION(glXDestroyContext), 2356 GLX_FUNCTION(glXDestroyGLXPixmap), 2357 GLX_FUNCTION(glXGetConfig), 2358 GLX_FUNCTION(glXGetCurrentContext), 2359 GLX_FUNCTION(glXGetCurrentDrawable), 2360 GLX_FUNCTION(glXIsDirect), 2361 GLX_FUNCTION(glXMakeCurrent), 2362 GLX_FUNCTION(glXQueryExtension), 2363 GLX_FUNCTION(glXQueryVersion), 2364 GLX_FUNCTION(glXSwapBuffers), 2365 GLX_FUNCTION(glXUseXFont), 2366 GLX_FUNCTION(glXWaitGL), 2367 GLX_FUNCTION(glXWaitX), 2368 2369 /*** GLX_VERSION_1_1 ***/ 2370 GLX_FUNCTION(glXGetClientString), 2371 GLX_FUNCTION(glXQueryExtensionsString), 2372 GLX_FUNCTION(glXQueryServerString), 2373 2374 /*** GLX_VERSION_1_2 ***/ 2375 GLX_FUNCTION(glXGetCurrentDisplay), 2376 2377 /*** GLX_VERSION_1_3 ***/ 2378 GLX_FUNCTION(glXChooseFBConfig), 2379 GLX_FUNCTION(glXCreateNewContext), 2380 GLX_FUNCTION(glXCreatePbuffer), 2381 GLX_FUNCTION(glXCreatePixmap), 2382 GLX_FUNCTION(glXCreateWindow), 2383 GLX_FUNCTION(glXDestroyPbuffer), 2384 GLX_FUNCTION(glXDestroyPixmap), 2385 GLX_FUNCTION(glXDestroyWindow), 2386 GLX_FUNCTION(glXGetCurrentReadDrawable), 2387 GLX_FUNCTION(glXGetFBConfigAttrib), 2388 GLX_FUNCTION(glXGetFBConfigs), 2389 GLX_FUNCTION(glXGetSelectedEvent), 2390 GLX_FUNCTION(glXGetVisualFromFBConfig), 2391 GLX_FUNCTION(glXMakeContextCurrent), 2392 GLX_FUNCTION(glXQueryContext), 2393 GLX_FUNCTION(glXQueryDrawable), 2394 GLX_FUNCTION(glXSelectEvent), 2395 2396#ifndef GLX_USE_APPLEGL 2397 /*** GLX_SGI_swap_control ***/ 2398 GLX_FUNCTION2(glXSwapIntervalSGI, __glXSwapIntervalSGI), 2399 2400 /*** GLX_SGI_video_sync ***/ 2401 GLX_FUNCTION2(glXGetVideoSyncSGI, __glXGetVideoSyncSGI), 2402 GLX_FUNCTION2(glXWaitVideoSyncSGI, __glXWaitVideoSyncSGI), 2403 2404 /*** GLX_SGI_make_current_read ***/ 2405 GLX_FUNCTION2(glXMakeCurrentReadSGI, glXMakeContextCurrent), 2406 GLX_FUNCTION2(glXGetCurrentReadDrawableSGI, glXGetCurrentReadDrawable), 2407 2408 /*** GLX_EXT_import_context ***/ 2409 GLX_FUNCTION(glXFreeContextEXT), 2410 GLX_FUNCTION(glXGetContextIDEXT), 2411 GLX_FUNCTION2(glXGetCurrentDisplayEXT, glXGetCurrentDisplay), 2412 GLX_FUNCTION(glXImportContextEXT), 2413 GLX_FUNCTION2(glXQueryContextInfoEXT, glXQueryContext), 2414#endif 2415 2416 /*** GLX_SGIX_fbconfig ***/ 2417 GLX_FUNCTION2(glXGetFBConfigAttribSGIX, glXGetFBConfigAttrib), 2418 GLX_FUNCTION2(glXChooseFBConfigSGIX, glXChooseFBConfig), 2419 GLX_FUNCTION(glXCreateGLXPixmapWithConfigSGIX), 2420 GLX_FUNCTION(glXCreateContextWithConfigSGIX), 2421 GLX_FUNCTION2(glXGetVisualFromFBConfigSGIX, glXGetVisualFromFBConfig), 2422 GLX_FUNCTION(glXGetFBConfigFromVisualSGIX), 2423 2424#ifndef GLX_USE_APPLEGL 2425 /*** GLX_SGIX_pbuffer ***/ 2426 GLX_FUNCTION(glXCreateGLXPbufferSGIX), 2427 GLX_FUNCTION(glXDestroyGLXPbufferSGIX), 2428 GLX_FUNCTION(glXQueryGLXPbufferSGIX), 2429 GLX_FUNCTION(glXSelectEventSGIX), 2430 GLX_FUNCTION(glXGetSelectedEventSGIX), 2431 2432 /*** GLX_SGIX_swap_group ***/ 2433 GLX_FUNCTION2(glXJoinSwapGroupSGIX, __glXJoinSwapGroupSGIX), 2434 2435 /*** GLX_SGIX_swap_barrier ***/ 2436 GLX_FUNCTION2(glXBindSwapBarrierSGIX, __glXBindSwapBarrierSGIX), 2437 GLX_FUNCTION2(glXQueryMaxSwapBarriersSGIX, __glXQueryMaxSwapBarriersSGIX), 2438 2439 /*** GLX_MESA_copy_sub_buffer ***/ 2440 GLX_FUNCTION2(glXCopySubBufferMESA, __glXCopySubBufferMESA), 2441 2442 /*** GLX_MESA_pixmap_colormap ***/ 2443 GLX_FUNCTION(glXCreateGLXPixmapMESA), 2444 2445 /*** GLX_MESA_release_buffers ***/ 2446 GLX_FUNCTION2(glXReleaseBuffersMESA, __glXReleaseBuffersMESA), 2447 2448 /*** GLX_MESA_swap_control ***/ 2449 GLX_FUNCTION2(glXSwapIntervalMESA, __glXSwapIntervalMESA), 2450 GLX_FUNCTION2(glXGetSwapIntervalMESA, __glXGetSwapIntervalMESA), 2451#endif 2452 2453 /*** GLX_ARB_get_proc_address ***/ 2454 GLX_FUNCTION(glXGetProcAddressARB), 2455 2456 /*** GLX 1.4 ***/ 2457 GLX_FUNCTION2(glXGetProcAddress, glXGetProcAddressARB), 2458 2459#ifndef GLX_USE_APPLEGL 2460 /*** GLX_OML_sync_control ***/ 2461 GLX_FUNCTION2(glXWaitForSbcOML, __glXWaitForSbcOML), 2462 GLX_FUNCTION2(glXWaitForMscOML, __glXWaitForMscOML), 2463 GLX_FUNCTION2(glXSwapBuffersMscOML, __glXSwapBuffersMscOML), 2464 GLX_FUNCTION2(glXGetMscRateOML, __glXGetMscRateOML), 2465 GLX_FUNCTION2(glXGetSyncValuesOML, __glXGetSyncValuesOML), 2466 2467 /*** GLX_EXT_texture_from_pixmap ***/ 2468 GLX_FUNCTION2(glXBindTexImageEXT, __glXBindTexImageEXT), 2469 GLX_FUNCTION2(glXReleaseTexImageEXT, __glXReleaseTexImageEXT), 2470#endif 2471 2472#if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL) 2473 /*** DRI configuration ***/ 2474 GLX_FUNCTION(glXGetScreenDriver), 2475 GLX_FUNCTION(glXGetDriverConfig), 2476#endif 2477 2478 {NULL, NULL} /* end of list */ 2479}; 2480 2481static const GLvoid * 2482get_glx_proc_address(const char *funcName) 2483{ 2484 GLuint i; 2485 2486 /* try static functions */ 2487 for (i = 0; GLX_functions[i].Name; i++) { 2488 if (strcmp(GLX_functions[i].Name, funcName) == 0) 2489 return GLX_functions[i].Address; 2490 } 2491 2492 return NULL; 2493} 2494 2495/** 2496 * Get the address of a named GL function. This is the pre-GLX 1.4 name for 2497 * \c glXGetProcAddress. 2498 * 2499 * \param procName Name of a GL or GLX function. 2500 * \returns A pointer to the named function 2501 * 2502 * \sa glXGetProcAddress 2503 */ 2504_X_EXPORT void (*glXGetProcAddressARB(const GLubyte * procName)) (void) 2505{ 2506 typedef void (*gl_function) (void); 2507 gl_function f; 2508 2509 2510 /* Search the table of GLX and internal functions first. If that 2511 * fails and the supplied name could be a valid core GL name, try 2512 * searching the core GL function table. This check is done to prevent 2513 * DRI based drivers from searching the core GL function table for 2514 * internal API functions. 2515 */ 2516 f = (gl_function) get_glx_proc_address((const char *) procName); 2517 if ((f == NULL) && (procName[0] == 'g') && (procName[1] == 'l') 2518 && (procName[2] != 'X')) { 2519#ifdef GLX_SHARED_GLAPI 2520 f = (gl_function) __indirect_get_proc_address((const char *) procName); 2521#endif 2522 if (!f) 2523 f = (gl_function) _glapi_get_proc_address((const char *) procName); 2524 } 2525 return f; 2526} 2527 2528/** 2529 * Get the address of a named GL function. This is the GLX 1.4 name for 2530 * \c glXGetProcAddressARB. 2531 * 2532 * \param procName Name of a GL or GLX function. 2533 * \returns A pointer to the named function 2534 * 2535 * \sa glXGetProcAddressARB 2536 */ 2537_X_EXPORT void (*glXGetProcAddress(const GLubyte * procName)) (void) 2538#if defined(__GNUC__) && !defined(GLX_ALIAS_UNSUPPORTED) 2539 __attribute__ ((alias("glXGetProcAddressARB"))); 2540#else 2541{ 2542 return glXGetProcAddressARB(procName); 2543} 2544#endif /* __GNUC__ */ 2545 2546 2547#if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL) 2548/** 2549 * Get the unadjusted system time (UST). Currently, the UST is measured in 2550 * microseconds since Epoc. The actual resolution of the UST may vary from 2551 * system to system, and the units may vary from release to release. 2552 * Drivers should not call this function directly. They should instead use 2553 * \c glXGetProcAddress to obtain a pointer to the function. 2554 * 2555 * \param ust Location to store the 64-bit UST 2556 * \returns Zero on success or a negative errno value on failure. 2557 * 2558 * \sa glXGetProcAddress, PFNGLXGETUSTPROC 2559 * 2560 * \since Internal API version 20030317. 2561 */ 2562_X_HIDDEN int 2563__glXGetUST(int64_t * ust) 2564{ 2565 struct timeval tv; 2566 2567 if (ust == NULL) { 2568 return -EFAULT; 2569 } 2570 2571 if (gettimeofday(&tv, NULL) == 0) { 2572 ust[0] = (tv.tv_sec * 1000000) + tv.tv_usec; 2573 return 0; 2574 } 2575 else { 2576 return -errno; 2577 } 2578} 2579#endif /* GLX_DIRECT_RENDERING */ 2580