/* * SGI FREE SOFTWARE LICENSE B (Version 2.0, Sept. 18, 2008) * Copyright (C) 1991-2000 Silicon Graphics, Inc. All Rights Reserved. * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the "Software"), * to deal in the Software without restriction, including without limitation * the rights to use, copy, modify, merge, publish, distribute, sublicense, * and/or sell copies of the Software, and to permit persons to whom the * Software is furnished to do so, subject to the following conditions: * * The above copyright notice including the dates of first publication and * either this permission notice or a reference to * http://oss.sgi.com/projects/FreeB/ * shall be included in all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL * SILICON GRAPHICS, INC. BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE * SOFTWARE. * * Except as contained in this notice, the name of Silicon Graphics, Inc. * shall not be used in advertising or otherwise to promote the sale, use or * other dealings in this Software without prior written authorization from * Silicon Graphics, Inc. */ /** * \file glxcmds.c * Client-side GLX interface. */ #include "glxclient.h" #include "glapi.h" #include "glxextensions.h" #include "glcontextmodes.h" #ifdef GLX_DIRECT_RENDERING #ifdef GLX_USE_APPLEGL #include "apple_glx_context.h" #include "apple_glx.h" #include "glx_error.h" #define GC_IS_DIRECT(gc) ((gc)->isDirect) #else #include #include #include "xf86dri.h" #define GC_IS_DIRECT(gc) ((gc)->driContext != NULL) #endif #else #define GC_IS_DIRECT(gc) (0) #endif #if defined(USE_XCB) #include #include #include #endif static const char __glXGLXClientVendorName[] = "Mesa Project and SGI"; static const char __glXGLXClientVersion[] = "1.4"; static const struct glx_context_vtable glx_indirect_context_vtable; #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL) static Bool windowExistsFlag; static int windowExistsErrorHandler(Display * dpy, XErrorEvent * xerr) { (void) dpy; if (xerr->error_code == BadWindow) { windowExistsFlag = GL_FALSE; } return 0; } /** * Find drawables in the local hash that have been destroyed on the * server. * * \param dpy Display to destroy drawables for * \param screen Screen number to destroy drawables for */ static void GarbageCollectDRIDrawables(Display * dpy, __GLXscreenConfigs * sc) { XID draw; __GLXDRIdrawable *pdraw; XWindowAttributes xwa; int (*oldXErrorHandler) (Display *, XErrorEvent *); /* Set no-op error handler so Xlib doesn't bail out if the windows * has alreay been destroyed on the server. */ XSync(dpy, GL_FALSE); oldXErrorHandler = XSetErrorHandler(windowExistsErrorHandler); if (__glxHashFirst(sc->drawHash, &draw, (void *) &pdraw) == 1) { do { windowExistsFlag = GL_TRUE; XGetWindowAttributes(dpy, draw, &xwa); /* dummy request */ if (!windowExistsFlag) { /* Destroy the local drawable data, if the drawable no longer exists in the Xserver */ (*pdraw->destroyDrawable) (pdraw); __glxHashDelete(sc->drawHash, draw); } } while (__glxHashNext(sc->drawHash, &draw, (void *) &pdraw) == 1); } XSync(dpy, GL_FALSE); XSetErrorHandler(oldXErrorHandler); } /** * Get the __DRIdrawable for the drawable associated with a GLXContext * * \param dpy The display associated with \c drawable. * \param drawable GLXDrawable whose __DRIdrawable part is to be retrieved. * \param scrn_num If non-NULL, the drawables screen is stored there * \returns A pointer to the context's __DRIdrawable on success, or NULL if * the drawable is not associated with a direct-rendering context. */ _X_HIDDEN __GLXDRIdrawable * GetGLXDRIDrawable(Display * dpy, GLXDrawable drawable, int *const scrn_num) { __GLXdisplayPrivate *priv = __glXInitialize(dpy); __GLXDRIdrawable *pdraw; const unsigned screen_count = ScreenCount(dpy); unsigned i; __GLXscreenConfigs *psc; if (priv == NULL) return NULL; for (i = 0; i < screen_count; i++) { psc = priv->screenConfigs[i]; if (psc->drawHash == NULL) continue; if (__glxHashLookup(psc->drawHash, drawable, (void *) &pdraw) == 0) { if (scrn_num != NULL) *scrn_num = i; return pdraw; } } return NULL; } #endif /** * Get the GLX per-screen data structure associated with a GLX context. * * \param dpy Display for which the GLX per-screen information is to be * retrieved. * \param scrn Screen on \c dpy for which the GLX per-screen information is * to be retrieved. * \returns A pointer to the GLX per-screen data if \c dpy and \c scrn * specify a valid GLX screen, or NULL otherwise. * * \todo Should this function validate that \c scrn is within the screen * number range for \c dpy? */ static __GLXscreenConfigs * GetGLXScreenConfigs(Display * dpy, int scrn) { __GLXdisplayPrivate *const priv = __glXInitialize(dpy); return (priv && priv->screenConfigs != NULL) ? priv->screenConfigs[scrn] : NULL; } static int GetGLXPrivScreenConfig(Display * dpy, int scrn, __GLXdisplayPrivate ** ppriv, __GLXscreenConfigs ** ppsc) { /* Initialize the extension, if needed . This has the added value * of initializing/allocating the display private */ if (dpy == NULL) { return GLX_NO_EXTENSION; } *ppriv = __glXInitialize(dpy); if (*ppriv == NULL) { return GLX_NO_EXTENSION; } /* Check screen number to see if its valid */ if ((scrn < 0) || (scrn >= ScreenCount(dpy))) { return GLX_BAD_SCREEN; } /* Check to see if the GL is supported on this screen */ *ppsc = (*ppriv)->screenConfigs[scrn]; if ((*ppsc)->configs == NULL) { /* No support for GL on this screen regardless of visual */ return GLX_BAD_VISUAL; } return Success; } /** * Determine if a \c GLXFBConfig supplied by the application is valid. * * \param dpy Application supplied \c Display pointer. * \param config Application supplied \c GLXFBConfig. * * \returns If the \c GLXFBConfig is valid, the a pointer to the matching * \c __GLcontextModes structure is returned. Otherwise, \c NULL * is returned. */ static __GLcontextModes * ValidateGLXFBConfig(Display * dpy, GLXFBConfig config) { __GLXdisplayPrivate *const priv = __glXInitialize(dpy); const unsigned num_screens = ScreenCount(dpy); unsigned i; const __GLcontextModes *modes; if (priv != NULL) { for (i = 0; i < num_screens; i++) { for (modes = priv->screenConfigs[i]->configs; modes != NULL; modes = modes->next) { if (modes == (__GLcontextModes *) config) { return (__GLcontextModes *) config; } } } } return NULL; } /** * \todo It should be possible to move the allocate of \c client_state_private * later in the function for direct-rendering contexts. Direct-rendering * contexts don't need to track client state, so they don't need that memory * at all. * * \todo Eliminate \c __glXInitVertexArrayState. Replace it with a new * function called \c __glXAllocateClientState that allocates the memory and * does all the initialization (including the pixel pack / unpack). */ static GLXContext AllocateGLXContext(Display * dpy) { GLXContext gc; int bufSize; CARD8 opcode; __GLXattribute *state; if (!dpy) return NULL; opcode = __glXSetupForCommand(dpy); if (!opcode) { return NULL; } /* Allocate our context record */ gc = (GLXContext) Xmalloc(sizeof(struct __GLXcontextRec)); if (!gc) { /* Out of memory */ return NULL; } memset(gc, 0, sizeof(struct __GLXcontextRec)); state = Xmalloc(sizeof(struct __GLXattributeRec)); if (state == NULL) { /* Out of memory */ Xfree(gc); return NULL; } gc->client_state_private = state; memset(gc->client_state_private, 0, sizeof(struct __GLXattributeRec)); state->NoDrawArraysProtocol = (getenv("LIBGL_NO_DRAWARRAYS") != NULL); /* ** Create a temporary buffer to hold GLX rendering commands. The size ** of the buffer is selected so that the maximum number of GLX rendering ** commands can fit in a single X packet and still have room in the X ** packet for the GLXRenderReq header. */ bufSize = (XMaxRequestSize(dpy) * 4) - sz_xGLXRenderReq; gc->buf = (GLubyte *) Xmalloc(bufSize); if (!gc->buf) { Xfree(gc->client_state_private); Xfree(gc); return NULL; } gc->bufSize = bufSize; /* Fill in the new context */ gc->renderMode = GL_RENDER; state->storePack.alignment = 4; state->storeUnpack.alignment = 4; gc->attributes.stackPointer = &gc->attributes.stack[0]; /* ** PERFORMANCE NOTE: A mode dependent fill image can speed things up. ** Other code uses the fastImageUnpack bit, but it is never set ** to GL_TRUE. */ gc->fastImageUnpack = GL_FALSE; gc->fillImage = __glFillImage; gc->pc = gc->buf; gc->bufEnd = gc->buf + bufSize; gc->isDirect = GL_FALSE; if (__glXDebug) { /* ** Set limit register so that there will be one command per packet */ gc->limit = gc->buf; } else { gc->limit = gc->buf + bufSize - __GLX_BUFFER_LIMIT_SIZE; } gc->createDpy = dpy; gc->majorOpcode = opcode; /* ** Constrain the maximum drawing command size allowed to be ** transfered using the X_GLXRender protocol request. First ** constrain by a software limit, then constrain by the protocl ** limit. */ if (bufSize > __GLX_RENDER_CMD_SIZE_LIMIT) { bufSize = __GLX_RENDER_CMD_SIZE_LIMIT; } if (bufSize > __GLX_MAX_RENDER_CMD_SIZE) { bufSize = __GLX_MAX_RENDER_CMD_SIZE; } gc->maxSmallRenderCommandSize = bufSize; #ifdef GLX_USE_APPLEGL gc->driContext = NULL; gc->do_destroy = False; #endif return gc; } /** * Create a new context. Exactly one of \c vis and \c fbconfig should be * non-NULL. * * \param use_glx_1_3 For FBConfigs, should GLX 1.3 protocol or * SGIX_fbconfig protocol be used? * \param renderType For FBConfigs, what is the rendering type? */ static GLXContext CreateContext(Display * dpy, int generic_id, const __GLcontextModes * const fbconfig, GLXContext shareList, Bool allowDirect, unsigned code, int renderType, int screen) { GLXContext gc; __GLXscreenConfigs *const psc = GetGLXScreenConfigs(dpy, screen); #if defined(GLX_DIRECT_RENDERING) && defined(GLX_USE_APPLEGL) int errorcode; bool x11error; #endif if (dpy == NULL) return NULL; if (generic_id == None) return NULL; gc = AllocateGLXContext(dpy); if (!gc) return NULL; #ifndef GLX_USE_APPLEGL /* TODO: darwin indirect */ #ifdef GLX_DIRECT_RENDERING if (allowDirect && psc->driScreen) { gc->driContext = psc->driScreen->createContext(psc, fbconfig, gc, shareList, renderType); if (gc->driContext != NULL) { gc->screen = screen; gc->psc = psc; gc->mode = fbconfig; gc->isDirect = GL_TRUE; } } #endif if (gc->driContext != NULL) gc->vtable = psc->direct_context_vtable; else gc->vtable = &glx_indirect_context_vtable; LockDisplay(dpy); switch (code) { case X_GLXCreateContext: { xGLXCreateContextReq *req; /* Send the glXCreateContext request */ GetReq(GLXCreateContext, req); req->reqType = gc->majorOpcode; req->glxCode = X_GLXCreateContext; req->context = gc->xid = XAllocID(dpy); req->visual = generic_id; req->screen = screen; req->shareList = shareList ? shareList->xid : None; req->isDirect = GC_IS_DIRECT(gc); break; } case X_GLXCreateNewContext: { xGLXCreateNewContextReq *req; /* Send the glXCreateNewContext request */ GetReq(GLXCreateNewContext, req); req->reqType = gc->majorOpcode; req->glxCode = X_GLXCreateNewContext; req->context = gc->xid = XAllocID(dpy); req->fbconfig = generic_id; req->screen = screen; req->renderType = renderType; req->shareList = shareList ? shareList->xid : None; req->isDirect = GC_IS_DIRECT(gc); break; } case X_GLXvop_CreateContextWithConfigSGIX: { xGLXVendorPrivateWithReplyReq *vpreq; xGLXCreateContextWithConfigSGIXReq *req; /* Send the glXCreateNewContext request */ GetReqExtra(GLXVendorPrivateWithReply, sz_xGLXCreateContextWithConfigSGIXReq - sz_xGLXVendorPrivateWithReplyReq, vpreq); req = (xGLXCreateContextWithConfigSGIXReq *) vpreq; req->reqType = gc->majorOpcode; req->glxCode = X_GLXVendorPrivateWithReply; req->vendorCode = X_GLXvop_CreateContextWithConfigSGIX; req->context = gc->xid = XAllocID(dpy); req->fbconfig = generic_id; req->screen = screen; req->renderType = renderType; req->shareList = shareList ? shareList->xid : None; req->isDirect = GC_IS_DIRECT(gc); break; } default: /* What to do here? This case is the sign of an internal error. It * should never be reachable. */ break; } UnlockDisplay(dpy); SyncHandle(); #endif gc->imported = GL_FALSE; gc->renderType = renderType; /* TODO: darwin: Integrate with above to do indirect */ #ifdef GLX_USE_APPLEGL if(apple_glx_create_context(&gc->driContext, dpy, screen, fbconfig, shareList ? shareList->driContext : NULL, &errorcode, &x11error)) { __glXSendError(dpy, errorcode, 0, X_GLXCreateContext, x11error); __glXFreeContext(gc); return NULL; } gc->currentContextTag = -1; gc->mode = fbconfig; gc->isDirect = allowDirect; #endif return gc; } PUBLIC GLXContext glXCreateContext(Display * dpy, XVisualInfo * vis, GLXContext shareList, Bool allowDirect) { const __GLcontextModes *mode = NULL; int renderType = 0; #if defined(GLX_DIRECT_RENDERING) || defined(GLX_USE_APPLEGL) __GLXscreenConfigs *const psc = GetGLXScreenConfigs(dpy, vis->screen); mode = _gl_context_modes_find_visual(psc->visuals, vis->visualid); if (mode == NULL) { xError error; error.errorCode = BadValue; error.resourceID = vis->visualid; error.sequenceNumber = dpy->request; error.type = X_Error; error.majorCode = __glXSetupForCommand(dpy); error.minorCode = X_GLXCreateContext; _XError(dpy, &error); return None; } renderType = mode->rgbMode ? GLX_RGBA_TYPE : GLX_COLOR_INDEX_TYPE; #endif return CreateContext(dpy, vis->visualid, mode, shareList, allowDirect, X_GLXCreateContext, renderType, vis->screen); } _X_HIDDEN void __glXFreeContext(__GLXcontext * gc) { if (gc->vendor) XFree((char *) gc->vendor); if (gc->renderer) XFree((char *) gc->renderer); if (gc->version) XFree((char *) gc->version); if (gc->extensions) XFree((char *) gc->extensions); __glFreeAttributeState(gc); XFree((char *) gc->buf); Xfree((char *) gc->client_state_private); XFree((char *) gc); } /* ** Destroy the named context */ static void DestroyContext(Display * dpy, GLXContext gc) { #ifndef GLX_USE_APPLEGL /* TODO: darwin: indirect */ xGLXDestroyContextReq *req; GLXContextID xid; CARD8 opcode; GLboolean imported; opcode = __glXSetupForCommand(dpy); if (!opcode || !gc) { return; } __glXLock(); xid = gc->xid; imported = gc->imported; gc->xid = None; if (gc->currentDpy) { /* This context is bound to some thread. According to the man page, * we should not actually delete the context until it's unbound. * Note that we set gc->xid = None above. In MakeContextCurrent() * we check for that and delete the context there. */ __glXUnlock(); return; } #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL) /* Destroy the direct rendering context */ if (gc->driContext) { (*gc->driContext->destroyContext) (gc->driContext, gc->psc, dpy); gc->driContext = NULL; GarbageCollectDRIDrawables(dpy, gc->psc); } #endif __glXFreeVertexArrayState(gc); #else __glXLock(); #endif /* GLX_USE_APPLEGL */ if (gc->currentDpy) { #ifdef GLX_USE_APPLEGL /* * Set the Bool that indicates that we should destroy this GLX context * when the context is no longer current. */ gc->do_destroy = True; #endif /* Have to free later cuz it's in use now */ __glXUnlock(); } else { /* Destroy the handle if not current to anybody */ __glXUnlock(); #ifdef GLX_USE_APPLEGL if(gc->driContext) apple_glx_destroy_context(&gc->driContext, dpy); #endif __glXFreeContext(gc); } #ifndef GLX_USE_APPLEGL if (!imported) { /* ** This dpy also created the server side part of the context. ** Send the glXDestroyContext request. */ LockDisplay(dpy); GetReq(GLXDestroyContext, req); req->reqType = opcode; req->glxCode = X_GLXDestroyContext; req->context = xid; UnlockDisplay(dpy); SyncHandle(); } #endif } PUBLIC void glXDestroyContext(Display * dpy, GLXContext gc) { DestroyContext(dpy, gc); } /* ** Return the major and minor version #s for the GLX extension */ PUBLIC Bool glXQueryVersion(Display * dpy, int *major, int *minor) { __GLXdisplayPrivate *priv; /* Init the extension. This fetches the major and minor version. */ priv = __glXInitialize(dpy); if (!priv) return GL_FALSE; if (major) *major = priv->majorVersion; if (minor) *minor = priv->minorVersion; return GL_TRUE; } /* ** Query the existance of the GLX extension */ PUBLIC Bool glXQueryExtension(Display * dpy, int *errorBase, int *eventBase) { int major_op, erb, evb; Bool rv; rv = XQueryExtension(dpy, GLX_EXTENSION_NAME, &major_op, &evb, &erb); if (rv) { if (errorBase) *errorBase = erb; if (eventBase) *eventBase = evb; } return rv; } /* ** Put a barrier in the token stream that forces the GL to finish its ** work before X can proceed. */ PUBLIC void glXWaitGL(void) { #ifndef GLX_USE_APPLEGL xGLXWaitGLReq *req; #endif GLXContext gc = __glXGetCurrentContext(); Display *dpy = gc->currentDpy; if (!dpy) return; /* Flush any pending commands out */ __glXFlushRenderBuffer(gc, gc->pc); #ifdef GLX_USE_APPLEGL glFinish(); #else #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL) if (gc->driContext) { int screen; __GLXDRIdrawable *pdraw = GetGLXDRIDrawable(dpy, gc->currentDrawable, &screen); if (pdraw != NULL) { __GLXscreenConfigs *const psc = GetGLXScreenConfigs(dpy, screen); glFlush(); if (psc->driScreen->waitGL != NULL) (*psc->driScreen->waitGL) (pdraw); } return; } #endif /* Send the glXWaitGL request */ LockDisplay(dpy); GetReq(GLXWaitGL, req); req->reqType = gc->majorOpcode; req->glxCode = X_GLXWaitGL; req->contextTag = gc->currentContextTag; UnlockDisplay(dpy); SyncHandle(); #endif /* GLX_USE_APPLEGL */ } /* ** Put a barrier in the token stream that forces X to finish its ** work before GL can proceed. */ PUBLIC void glXWaitX(void) { #ifndef GLX_USE_APPLEGL xGLXWaitXReq *req; #endif GLXContext gc = __glXGetCurrentContext(); Display *dpy = gc->currentDpy; if (!dpy) return; /* Flush any pending commands out */ __glXFlushRenderBuffer(gc, gc->pc); #ifdef GLX_USE_APPLEGL apple_glx_waitx(dpy, gc->driContext); #else #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL) if (gc->driContext) { int screen; __GLXDRIdrawable *pdraw = GetGLXDRIDrawable(dpy, gc->currentDrawable, &screen); if (pdraw != NULL) { __GLXscreenConfigs *const psc = GetGLXScreenConfigs(dpy, screen); if (psc->driScreen->waitX != NULL) (*psc->driScreen->waitX) (pdraw); } else XSync(dpy, False); return; } #endif /* ** Send the glXWaitX request. */ LockDisplay(dpy); GetReq(GLXWaitX, req); req->reqType = gc->majorOpcode; req->glxCode = X_GLXWaitX; req->contextTag = gc->currentContextTag; UnlockDisplay(dpy); SyncHandle(); #endif /* GLX_USE_APPLEGL */ } PUBLIC void glXUseXFont(Font font, int first, int count, int listBase) { #ifndef GLX_USE_APPLEGL xGLXUseXFontReq *req; #endif GLXContext gc = __glXGetCurrentContext(); Display *dpy = gc->currentDpy; if (!dpy) return; /* Flush any pending commands out */ (void) __glXFlushRenderBuffer(gc, gc->pc); #ifdef GLX_USE_APPLEGL DRI_glXUseXFont(font, first, count, listBase); #else #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL) if (gc->driContext) { DRI_glXUseXFont(font, first, count, listBase); return; } #endif /* Send the glXUseFont request */ LockDisplay(dpy); GetReq(GLXUseXFont, req); req->reqType = gc->majorOpcode; req->glxCode = X_GLXUseXFont; req->contextTag = gc->currentContextTag; req->font = font; req->first = first; req->count = count; req->listBase = listBase; UnlockDisplay(dpy); SyncHandle(); #endif /* GLX_USE_APPLEGL */ } /************************************************************************/ /* ** Copy the source context to the destination context using the ** attribute "mask". */ PUBLIC void glXCopyContext(Display * dpy, GLXContext source, GLXContext dest, unsigned long mask) { #ifdef GLX_USE_APPLEGL GLXContext gc = __glXGetCurrentContext(); int errorcode; bool x11error; if(apple_glx_copy_context(gc->driContext, source->driContext, dest->driContext, mask, &errorcode, &x11error)) { __glXSendError(dpy, errorcode, 0, X_GLXCopyContext, x11error); } #else xGLXCopyContextReq *req; GLXContext gc = __glXGetCurrentContext(); GLXContextTag tag; CARD8 opcode; opcode = __glXSetupForCommand(dpy); if (!opcode) { return; } #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL) if (gc->driContext) { /* NOT_DONE: This does not work yet */ } #endif /* ** If the source is the current context, send its tag so that the context ** can be flushed before the copy. */ if (source == gc && dpy == gc->currentDpy) { tag = gc->currentContextTag; } else { tag = 0; } /* Send the glXCopyContext request */ LockDisplay(dpy); GetReq(GLXCopyContext, req); req->reqType = opcode; req->glxCode = X_GLXCopyContext; req->source = source ? source->xid : None; req->dest = dest ? dest->xid : None; req->mask = mask; req->contextTag = tag; UnlockDisplay(dpy); SyncHandle(); #endif /* GLX_USE_APPLEGL */ } /** * Determine if a context uses direct rendering. * * \param dpy Display where the context was created. * \param contextID ID of the context to be tested. * * \returns \c GL_TRUE if the context is direct rendering or not. */ static Bool __glXIsDirect(Display * dpy, GLXContextID contextID) { #if !defined(USE_XCB) xGLXIsDirectReq *req; xGLXIsDirectReply reply; #endif CARD8 opcode; opcode = __glXSetupForCommand(dpy); if (!opcode) { return GL_FALSE; } #ifdef USE_XCB xcb_connection_t *c = XGetXCBConnection(dpy); xcb_glx_is_direct_reply_t *reply = xcb_glx_is_direct_reply(c, xcb_glx_is_direct (c, contextID), NULL); const Bool is_direct = reply->is_direct ? True : False; free(reply); return is_direct; #else /* Send the glXIsDirect request */ LockDisplay(dpy); GetReq(GLXIsDirect, req); req->reqType = opcode; req->glxCode = X_GLXIsDirect; req->context = contextID; _XReply(dpy, (xReply *) & reply, 0, False); UnlockDisplay(dpy); SyncHandle(); return reply.isDirect; #endif /* USE_XCB */ } /** * \todo * Shouldn't this function \b always return \c GL_FALSE when * \c GLX_DIRECT_RENDERING is not defined? Do we really need to bother with * the GLX protocol here at all? */ PUBLIC Bool glXIsDirect(Display * dpy, GLXContext gc) { if (!gc) { return GL_FALSE; } else if (GC_IS_DIRECT(gc)) { return GL_TRUE; } #ifdef GLX_USE_APPLEGL /* TODO: indirect on darwin */ return GL_FALSE; #else return __glXIsDirect(dpy, gc->xid); #endif } PUBLIC GLXPixmap glXCreateGLXPixmap(Display * dpy, XVisualInfo * vis, Pixmap pixmap) { #ifdef GLX_USE_APPLEGL int screen = vis->screen; __GLXscreenConfigs *const psc = GetGLXScreenConfigs(dpy, screen); const __GLcontextModes *modes; modes = _gl_context_modes_find_visual(psc->visuals, vis->visualid); if(apple_glx_pixmap_create(dpy, vis->screen, pixmap, modes)) return None; return pixmap; #else xGLXCreateGLXPixmapReq *req; GLXPixmap xid; CARD8 opcode; opcode = __glXSetupForCommand(dpy); if (!opcode) { return None; } /* Send the glXCreateGLXPixmap request */ LockDisplay(dpy); GetReq(GLXCreateGLXPixmap, req); req->reqType = opcode; req->glxCode = X_GLXCreateGLXPixmap; req->screen = vis->screen; req->visual = vis->visualid; req->pixmap = pixmap; req->glxpixmap = xid = XAllocID(dpy); UnlockDisplay(dpy); SyncHandle(); #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL) do { /* FIXME: Maybe delay __DRIdrawable creation until the drawable * is actually bound to a context... */ __GLXdisplayPrivate *const priv = __glXInitialize(dpy); __GLXDRIdrawable *pdraw; __GLXscreenConfigs *psc; __GLcontextModes *modes; psc = priv->screenConfigs[vis->screen]; if (psc->driScreen == NULL) break; modes = _gl_context_modes_find_visual(psc->visuals, vis->visualid); pdraw = psc->driScreen->createDrawable(psc, pixmap, req->glxpixmap, modes); if (pdraw == NULL) { fprintf(stderr, "failed to create pixmap\n"); break; } if (__glxHashInsert(psc->drawHash, req->glxpixmap, pdraw)) { (*pdraw->destroyDrawable) (pdraw); return None; /* FIXME: Check what we're supposed to do here... */ } } while (0); #endif return xid; #endif } /* ** Destroy the named pixmap */ PUBLIC void glXDestroyGLXPixmap(Display * dpy, GLXPixmap glxpixmap) { #ifdef GLX_USE_APPLEGL if(apple_glx_pixmap_destroy(dpy, glxpixmap)) __glXSendError(dpy, GLXBadPixmap, glxpixmap, X_GLXDestroyPixmap, false); #else xGLXDestroyGLXPixmapReq *req; CARD8 opcode; opcode = __glXSetupForCommand(dpy); if (!opcode) { return; } /* Send the glXDestroyGLXPixmap request */ LockDisplay(dpy); GetReq(GLXDestroyGLXPixmap, req); req->reqType = opcode; req->glxCode = X_GLXDestroyGLXPixmap; req->glxpixmap = glxpixmap; UnlockDisplay(dpy); SyncHandle(); #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL) { int screen; __GLXdisplayPrivate *const priv = __glXInitialize(dpy); __GLXDRIdrawable *pdraw = GetGLXDRIDrawable(dpy, glxpixmap, &screen); __GLXscreenConfigs *psc = priv->screenConfigs[screen]; if (pdraw != NULL) { (*pdraw->destroyDrawable) (pdraw); __glxHashDelete(psc->drawHash, glxpixmap); } } #endif #endif /* GLX_USE_APPLEGL */ } PUBLIC void glXSwapBuffers(Display * dpy, GLXDrawable drawable) { #ifdef GLX_USE_APPLEGL GLXContext gc = glXGetCurrentContext(); if(gc && apple_glx_is_current_drawable(dpy, gc->driContext, drawable)) { apple_glx_swap_buffers(gc->driContext); } else { __glXSendError(dpy, GLXBadCurrentWindow, 0, X_GLXSwapBuffers, false); } #else GLXContext gc; GLXContextTag tag; CARD8 opcode; #ifdef USE_XCB xcb_connection_t *c; #else xGLXSwapBuffersReq *req; #endif #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL) __GLXDRIdrawable *pdraw = GetGLXDRIDrawable(dpy, drawable, NULL); if (pdraw != NULL) { glFlush(); (*pdraw->psc->driScreen->swapBuffers)(pdraw, 0, 0, 0); return; } #endif opcode = __glXSetupForCommand(dpy); if (!opcode) { return; } /* ** The calling thread may or may not have a current context. If it ** does, send the context tag so the server can do a flush. */ gc = __glXGetCurrentContext(); if ((gc != NULL) && (dpy == gc->currentDpy) && ((drawable == gc->currentDrawable) || (drawable == gc->currentReadable))) { tag = gc->currentContextTag; } else { tag = 0; } #ifdef USE_XCB c = XGetXCBConnection(dpy); xcb_glx_swap_buffers(c, tag, drawable); xcb_flush(c); #else /* Send the glXSwapBuffers request */ LockDisplay(dpy); GetReq(GLXSwapBuffers, req); req->reqType = opcode; req->glxCode = X_GLXSwapBuffers; req->drawable = drawable; req->contextTag = tag; UnlockDisplay(dpy); SyncHandle(); XFlush(dpy); #endif /* USE_XCB */ #endif /* GLX_USE_APPLEGL */ } /* ** Return configuration information for the given display, screen and ** visual combination. */ PUBLIC int glXGetConfig(Display * dpy, XVisualInfo * vis, int attribute, int *value_return) { __GLXdisplayPrivate *priv; __GLXscreenConfigs *psc; __GLcontextModes *modes; int status; status = GetGLXPrivScreenConfig(dpy, vis->screen, &priv, &psc); if (status == Success) { modes = _gl_context_modes_find_visual(psc->visuals, vis->visualid); /* Lookup attribute after first finding a match on the visual */ if (modes != NULL) { return _gl_get_context_mode_data(modes, attribute, value_return); } status = GLX_BAD_VISUAL; } /* ** If we can't find the config for this visual, this visual is not ** supported by the OpenGL implementation on the server. */ if ((status == GLX_BAD_VISUAL) && (attribute == GLX_USE_GL)) { *value_return = GL_FALSE; status = Success; } return status; } /************************************************************************/ static void init_fbconfig_for_chooser(__GLcontextModes * config, GLboolean fbconfig_style_tags) { memset(config, 0, sizeof(__GLcontextModes)); config->visualID = (XID) GLX_DONT_CARE; config->visualType = GLX_DONT_CARE; /* glXChooseFBConfig specifies different defaults for these two than * glXChooseVisual. */ if (fbconfig_style_tags) { config->rgbMode = GL_TRUE; config->doubleBufferMode = GLX_DONT_CARE; } config->visualRating = GLX_DONT_CARE; config->transparentPixel = GLX_NONE; config->transparentRed = GLX_DONT_CARE; config->transparentGreen = GLX_DONT_CARE; config->transparentBlue = GLX_DONT_CARE; config->transparentAlpha = GLX_DONT_CARE; config->transparentIndex = GLX_DONT_CARE; config->drawableType = GLX_WINDOW_BIT; config->renderType = (config->rgbMode) ? GLX_RGBA_BIT : GLX_COLOR_INDEX_BIT; config->xRenderable = GLX_DONT_CARE; config->fbconfigID = (GLXFBConfigID) (GLX_DONT_CARE); config->swapMethod = GLX_DONT_CARE; } #define MATCH_DONT_CARE( param ) \ do { \ if ( ((int) a-> param != (int) GLX_DONT_CARE) \ && (a-> param != b-> param) ) { \ return False; \ } \ } while ( 0 ) #define MATCH_MINIMUM( param ) \ do { \ if ( ((int) a-> param != (int) GLX_DONT_CARE) \ && (a-> param > b-> param) ) { \ return False; \ } \ } while ( 0 ) #define MATCH_EXACT( param ) \ do { \ if ( a-> param != b-> param) { \ return False; \ } \ } while ( 0 ) /* Test that all bits from a are contained in b */ #define MATCH_MASK(param) \ do { \ if ((a->param & ~b->param) != 0) \ return False; \ } while (0); /** * Determine if two GLXFBConfigs are compatible. * * \param a Application specified config to test. * \param b Server specified config to test against \c a. */ static Bool fbconfigs_compatible(const __GLcontextModes * const a, const __GLcontextModes * const b) { MATCH_DONT_CARE(doubleBufferMode); MATCH_DONT_CARE(visualType); MATCH_DONT_CARE(visualRating); MATCH_DONT_CARE(xRenderable); MATCH_DONT_CARE(fbconfigID); MATCH_DONT_CARE(swapMethod); MATCH_MINIMUM(rgbBits); MATCH_MINIMUM(numAuxBuffers); MATCH_MINIMUM(redBits); MATCH_MINIMUM(greenBits); MATCH_MINIMUM(blueBits); MATCH_MINIMUM(alphaBits); MATCH_MINIMUM(depthBits); MATCH_MINIMUM(stencilBits); MATCH_MINIMUM(accumRedBits); MATCH_MINIMUM(accumGreenBits); MATCH_MINIMUM(accumBlueBits); MATCH_MINIMUM(accumAlphaBits); MATCH_MINIMUM(sampleBuffers); MATCH_MINIMUM(maxPbufferWidth); MATCH_MINIMUM(maxPbufferHeight); MATCH_MINIMUM(maxPbufferPixels); MATCH_MINIMUM(samples); MATCH_DONT_CARE(stereoMode); MATCH_EXACT(level); MATCH_MASK(drawableType); MATCH_MASK(renderType); /* There is a bug in a few of the XFree86 DDX drivers. They contain * visuals with a "transparent type" of 0 when they really mean GLX_NONE. * Technically speaking, it is a bug in the DDX driver, but there is * enough of an installed base to work around the problem here. In any * case, 0 is not a valid value of the transparent type, so we'll treat 0 * from the app as GLX_DONT_CARE. We'll consider GLX_NONE from the app and * 0 from the server to be a match to maintain backward compatibility with * the (broken) drivers. */ if (a->transparentPixel != (int) GLX_DONT_CARE && a->transparentPixel != 0) { if (a->transparentPixel == GLX_NONE) { if (b->transparentPixel != GLX_NONE && b->transparentPixel != 0) return False; } else { MATCH_EXACT(transparentPixel); } switch (a->transparentPixel) { case GLX_TRANSPARENT_RGB: MATCH_DONT_CARE(transparentRed); MATCH_DONT_CARE(transparentGreen); MATCH_DONT_CARE(transparentBlue); MATCH_DONT_CARE(transparentAlpha); break; case GLX_TRANSPARENT_INDEX: MATCH_DONT_CARE(transparentIndex); break; default: break; } } return True; } /* There's some trickly language in the GLX spec about how this is supposed * to work. Basically, if a given component size is either not specified * or the requested size is zero, it is supposed to act like PERFER_SMALLER. * Well, that's really hard to do with the code as-is. This behavior is * closer to correct, but still not technically right. */ #define PREFER_LARGER_OR_ZERO(comp) \ do { \ if ( ((*a)-> comp) != ((*b)-> comp) ) { \ if ( ((*a)-> comp) == 0 ) { \ return -1; \ } \ else if ( ((*b)-> comp) == 0 ) { \ return 1; \ } \ else { \ return ((*b)-> comp) - ((*a)-> comp) ; \ } \ } \ } while( 0 ) #define PREFER_LARGER(comp) \ do { \ if ( ((*a)-> comp) != ((*b)-> comp) ) { \ return ((*b)-> comp) - ((*a)-> comp) ; \ } \ } while( 0 ) #define PREFER_SMALLER(comp) \ do { \ if ( ((*a)-> comp) != ((*b)-> comp) ) { \ return ((*a)-> comp) - ((*b)-> comp) ; \ } \ } while( 0 ) /** * Compare two GLXFBConfigs. This function is intended to be used as the * compare function passed in to qsort. * * \returns If \c a is a "better" config, according to the specification of * SGIX_fbconfig, a number less than zero is returned. If \c b is * better, then a number greater than zero is return. If both are * equal, zero is returned. * \sa qsort, glXChooseVisual, glXChooseFBConfig, glXChooseFBConfigSGIX */ static int fbconfig_compare(const __GLcontextModes * const *const a, const __GLcontextModes * const *const b) { /* The order of these comparisons must NOT change. It is defined by * the GLX 1.3 spec and ARB_multisample. */ PREFER_SMALLER(visualSelectGroup); /* The sort order for the visualRating is GLX_NONE, GLX_SLOW, and * GLX_NON_CONFORMANT_CONFIG. It just so happens that this is the * numerical sort order of the enums (0x8000, 0x8001, and 0x800D). */ PREFER_SMALLER(visualRating); /* This isn't quite right. It is supposed to compare the sum of the * components the user specifically set minimums for. */ PREFER_LARGER_OR_ZERO(redBits); PREFER_LARGER_OR_ZERO(greenBits); PREFER_LARGER_OR_ZERO(blueBits); PREFER_LARGER_OR_ZERO(alphaBits); PREFER_SMALLER(rgbBits); if (((*a)->doubleBufferMode != (*b)->doubleBufferMode)) { /* Prefer single-buffer. */ return (!(*a)->doubleBufferMode) ? -1 : 1; } PREFER_SMALLER(numAuxBuffers); PREFER_LARGER_OR_ZERO(depthBits); PREFER_SMALLER(stencilBits); /* This isn't quite right. It is supposed to compare the sum of the * components the user specifically set minimums for. */ PREFER_LARGER_OR_ZERO(accumRedBits); PREFER_LARGER_OR_ZERO(accumGreenBits); PREFER_LARGER_OR_ZERO(accumBlueBits); PREFER_LARGER_OR_ZERO(accumAlphaBits); PREFER_SMALLER(visualType); /* None of the multisample specs say where this comparison should happen, * so I put it near the end. */ PREFER_SMALLER(sampleBuffers); PREFER_SMALLER(samples); /* None of the pbuffer or fbconfig specs say that this comparison needs * to happen at all, but it seems like it should. */ PREFER_LARGER(maxPbufferWidth); PREFER_LARGER(maxPbufferHeight); PREFER_LARGER(maxPbufferPixels); return 0; } /** * Selects and sorts a subset of the supplied configs based on the attributes. * This function forms to basis of \c glXChooseVisual, \c glXChooseFBConfig, * and \c glXChooseFBConfigSGIX. * * \param configs Array of pointers to possible configs. The elements of * this array that do not meet the criteria will be set to * NULL. The remaining elements will be sorted according to * the various visual / FBConfig selection rules. * \param num_configs Number of elements in the \c configs array. * \param attribList Attributes used select from \c configs. This array is * terminated by a \c None tag. The array can either take * the form expected by \c glXChooseVisual (where boolean * tags do not have a value) or by \c glXChooseFBConfig * (where every tag has a value). * \param fbconfig_style_tags Selects whether \c attribList is in * \c glXChooseVisual style or * \c glXChooseFBConfig style. * \returns The number of valid elements left in \c configs. * * \sa glXChooseVisual, glXChooseFBConfig, glXChooseFBConfigSGIX */ static int choose_visual(__GLcontextModes ** configs, int num_configs, const int *attribList, GLboolean fbconfig_style_tags) { __GLcontextModes test_config; int base; int i; /* This is a fairly direct implementation of the selection method * described by GLX_SGIX_fbconfig. Start by culling out all the * configs that are not compatible with the selected parameter * list. */ init_fbconfig_for_chooser(&test_config, fbconfig_style_tags); __glXInitializeVisualConfigFromTags(&test_config, 512, (const INT32 *) attribList, GL_TRUE, fbconfig_style_tags); base = 0; for (i = 0; i < num_configs; i++) { if (fbconfigs_compatible(&test_config, configs[i])) { configs[base] = configs[i]; base++; } } if (base == 0) { return 0; } if (base < num_configs) { (void) memset(&configs[base], 0, sizeof(void *) * (num_configs - base)); } /* After the incompatible configs are removed, the resulting * list is sorted according to the rules set out in the various * specifications. */ qsort(configs, base, sizeof(__GLcontextModes *), (int (*)(const void *, const void *)) fbconfig_compare); return base; } /* ** Return the visual that best matches the template. Return None if no ** visual matches the template. */ PUBLIC XVisualInfo * glXChooseVisual(Display * dpy, int screen, int *attribList) { XVisualInfo *visualList = NULL; __GLXdisplayPrivate *priv; __GLXscreenConfigs *psc; __GLcontextModes test_config; __GLcontextModes *modes; const __GLcontextModes *best_config = NULL; /* ** Get a list of all visuals, return if list is empty */ if (GetGLXPrivScreenConfig(dpy, screen, &priv, &psc) != Success) { return None; } /* ** Build a template from the defaults and the attribute list ** Free visual list and return if an unexpected token is encountered */ init_fbconfig_for_chooser(&test_config, GL_FALSE); __glXInitializeVisualConfigFromTags(&test_config, 512, (const INT32 *) attribList, GL_TRUE, GL_FALSE); /* ** Eliminate visuals that don't meet minimum requirements ** Compute a score for those that do ** Remember which visual, if any, got the highest score ** If no visual is acceptable, return None ** Otherwise, create an XVisualInfo list with just the selected X visual ** and return this. */ for (modes = psc->visuals; modes != NULL; modes = modes->next) { if (fbconfigs_compatible(&test_config, modes) && ((best_config == NULL) || (fbconfig_compare ((const __GLcontextModes * const *const) &modes, &best_config) < 0))) { XVisualInfo visualTemplate; XVisualInfo *newList; int i; visualTemplate.screen = screen; visualTemplate.visualid = modes->visualID; newList = XGetVisualInfo(dpy, VisualScreenMask | VisualIDMask, &visualTemplate, &i); if (newList) { Xfree(visualList); visualList = newList; best_config = modes; } } } #ifdef GLX_USE_APPLEGL if(visualList && getenv("LIBGL_DUMP_VISUALID")) { printf("visualid 0x%lx\n", visualList[0].visualid); } #endif return visualList; } PUBLIC const char * glXQueryExtensionsString(Display * dpy, int screen) { __GLXscreenConfigs *psc; __GLXdisplayPrivate *priv; if (GetGLXPrivScreenConfig(dpy, screen, &priv, &psc) != Success) { return NULL; } if (!psc->effectiveGLXexts) { if (!psc->serverGLXexts) { psc->serverGLXexts = __glXQueryServerString(dpy, priv->majorOpcode, screen, GLX_EXTENSIONS); } __glXCalculateUsableExtensions(psc, #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL) (psc->driScreen != NULL), #else GL_FALSE, #endif priv->minorVersion); } return psc->effectiveGLXexts; } PUBLIC const char * glXGetClientString(Display * dpy, int name) { (void) dpy; switch (name) { case GLX_VENDOR: return (__glXGLXClientVendorName); case GLX_VERSION: return (__glXGLXClientVersion); case GLX_EXTENSIONS: return (__glXGetClientExtensions()); default: return NULL; } } PUBLIC const char * glXQueryServerString(Display * dpy, int screen, int name) { __GLXscreenConfigs *psc; __GLXdisplayPrivate *priv; const char **str; if (GetGLXPrivScreenConfig(dpy, screen, &priv, &psc) != Success) { return NULL; } switch (name) { case GLX_VENDOR: str = &priv->serverGLXvendor; break; case GLX_VERSION: str = &priv->serverGLXversion; break; case GLX_EXTENSIONS: str = &psc->serverGLXexts; break; default: return NULL; } if (*str == NULL) { *str = __glXQueryServerString(dpy, priv->majorOpcode, screen, name); } return *str; } void __glXClientInfo(Display * dpy, int opcode) { char *ext_str = __glXGetClientGLExtensionString(); int size = strlen(ext_str) + 1; #ifdef USE_XCB xcb_connection_t *c = XGetXCBConnection(dpy); xcb_glx_client_info(c, GLX_MAJOR_VERSION, GLX_MINOR_VERSION, size, ext_str); #else xGLXClientInfoReq *req; /* Send the glXClientInfo request */ LockDisplay(dpy); GetReq(GLXClientInfo, req); req->reqType = opcode; req->glxCode = X_GLXClientInfo; req->major = GLX_MAJOR_VERSION; req->minor = GLX_MINOR_VERSION; req->length += (size + 3) >> 2; req->numbytes = size; Data(dpy, ext_str, size); UnlockDisplay(dpy); SyncHandle(); #endif /* USE_XCB */ Xfree(ext_str); } /* ** EXT_import_context */ PUBLIC Display * glXGetCurrentDisplay(void) { GLXContext gc = __glXGetCurrentContext(); if (NULL == gc) return NULL; return gc->currentDpy; } PUBLIC GLX_ALIAS(Display *, glXGetCurrentDisplayEXT, (void), (), glXGetCurrentDisplay) #ifndef GLX_USE_APPLEGL /** * Used internally by libGL to send \c xGLXQueryContextinfoExtReq requests * to the X-server. * * \param dpy Display where \c ctx was created. * \param ctx Context to query. * \returns \c Success on success. \c GLX_BAD_CONTEXT if \c ctx is invalid, * or zero if the request failed due to internal problems (i.e., * unable to allocate temporary memory, etc.) * * \note * This function dynamically determines whether to use the EXT_import_context * version of the protocol or the GLX 1.3 version of the protocol. */ static int __glXQueryContextInfo(Display * dpy, GLXContext ctx) { __GLXdisplayPrivate *priv = __glXInitialize(dpy); xGLXQueryContextReply reply; CARD8 opcode; GLuint numValues; int retval; if (ctx == NULL) { return GLX_BAD_CONTEXT; } opcode = __glXSetupForCommand(dpy); if (!opcode) { return 0; } /* Send the glXQueryContextInfoEXT request */ LockDisplay(dpy); if ((priv->majorVersion > 1) || (priv->minorVersion >= 3)) { xGLXQueryContextReq *req; GetReq(GLXQueryContext, req); req->reqType = opcode; req->glxCode = X_GLXQueryContext; req->context = (unsigned int) (ctx->xid); } else { xGLXVendorPrivateReq *vpreq; xGLXQueryContextInfoEXTReq *req; GetReqExtra(GLXVendorPrivate, sz_xGLXQueryContextInfoEXTReq - sz_xGLXVendorPrivateReq, vpreq); req = (xGLXQueryContextInfoEXTReq *) vpreq; req->reqType = opcode; req->glxCode = X_GLXVendorPrivateWithReply; req->vendorCode = X_GLXvop_QueryContextInfoEXT; req->context = (unsigned int) (ctx->xid); } _XReply(dpy, (xReply *) & reply, 0, False); numValues = reply.n; if (numValues == 0) retval = Success; else if (numValues > __GLX_MAX_CONTEXT_PROPS) retval = 0; else { int *propList, *pProp; int nPropListBytes; nPropListBytes = numValues << 3; propList = (int *) Xmalloc(nPropListBytes); if (NULL == propList) { retval = 0; } else { unsigned i; _XRead(dpy, (char *) propList, nPropListBytes); /* Look up screen first so we can look up visuals/fbconfigs later */ pProp = propList; for (i = 0; i < numValues; i++, pProp += 2) if (pProp[0] == GLX_SCREEN) { ctx->screen = pProp[1]; ctx->psc = GetGLXScreenConfigs(dpy, ctx->screen); } pProp = propList; for (i = 0; i < numValues; i++) { switch (*pProp++) { case GLX_SHARE_CONTEXT_EXT: ctx->share_xid = *pProp++; break; case GLX_VISUAL_ID_EXT: ctx->mode = _gl_context_modes_find_visual(ctx->psc->visuals, *pProp++); break; case GLX_FBCONFIG_ID: ctx->mode = _gl_context_modes_find_fbconfig(ctx->psc->configs, *pProp++); break; case GLX_RENDER_TYPE: ctx->renderType = *pProp++; break; case GLX_SCREEN: default: pProp++; continue; } } Xfree((char *) propList); retval = Success; } } UnlockDisplay(dpy); SyncHandle(); return retval; } #endif PUBLIC int glXQueryContext(Display * dpy, GLXContext ctx, int attribute, int *value) { #ifndef GLX_USE_APPLEGL int retVal; /* get the information from the server if we don't have it already */ #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL) if (!ctx->driContext && (ctx->mode == NULL)) { #else if (ctx->mode == NULL) { #endif retVal = __glXQueryContextInfo(dpy, ctx); if (Success != retVal) return retVal; } #endif switch (attribute) { #ifndef GLX_USE_APPLEGL case GLX_SHARE_CONTEXT_EXT: *value = (int) (ctx->share_xid); break; case GLX_VISUAL_ID_EXT: *value = ctx->mode ? ctx->mode->visualID : None; break; #endif case GLX_SCREEN: *value = (int) (ctx->screen); break; case GLX_FBCONFIG_ID: *value = ctx->mode ? ctx->mode->fbconfigID : None; break; case GLX_RENDER_TYPE: *value = (int) (ctx->renderType); break; default: return GLX_BAD_ATTRIBUTE; } return Success; } PUBLIC GLX_ALIAS(int, glXQueryContextInfoEXT, (Display * dpy, GLXContext ctx, int attribute, int *value), (dpy, ctx, attribute, value), glXQueryContext) PUBLIC GLXContextID glXGetContextIDEXT(const GLXContext ctx) { return ctx->xid; } PUBLIC GLXContext glXImportContextEXT(Display * dpy, GLXContextID contextID) { #ifdef GLX_USE_APPLEGL return NULL; #else GLXContext ctx; if (contextID == None) { return NULL; } if (__glXIsDirect(dpy, contextID)) { return NULL; } ctx = AllocateGLXContext(dpy); if (NULL != ctx) { ctx->xid = contextID; ctx->imported = GL_TRUE; if (Success != __glXQueryContextInfo(dpy, ctx)) { __glXFreeContext(ctx); ctx = NULL; } } return ctx; #endif } PUBLIC void glXFreeContextEXT(Display * dpy, GLXContext ctx) { DestroyContext(dpy, ctx); } /* * GLX 1.3 functions - these are just stubs for now! */ PUBLIC GLXFBConfig * glXChooseFBConfig(Display * dpy, int screen, const int *attribList, int *nitems) { __GLcontextModes **config_list; int list_size; config_list = (__GLcontextModes **) glXGetFBConfigs(dpy, screen, &list_size); if ((config_list != NULL) && (list_size > 0) && (attribList != NULL)) { list_size = choose_visual(config_list, list_size, attribList, GL_TRUE); if (list_size == 0) { XFree(config_list); config_list = NULL; } } *nitems = list_size; return (GLXFBConfig *) config_list; } PUBLIC GLXContext glXCreateNewContext(Display * dpy, GLXFBConfig config, int renderType, GLXContext shareList, Bool allowDirect) { const __GLcontextModes *const fbconfig = (const __GLcontextModes *const) config; return CreateContext(dpy, fbconfig->fbconfigID, fbconfig, shareList, allowDirect, X_GLXCreateNewContext, renderType, fbconfig->screen); } PUBLIC GLXDrawable glXGetCurrentReadDrawable(void) { GLXContext gc = __glXGetCurrentContext(); return gc->currentReadable; } PUBLIC GLXFBConfig * glXGetFBConfigs(Display * dpy, int screen, int *nelements) { __GLXdisplayPrivate *priv = __glXInitialize(dpy); __GLcontextModes **config = NULL; int i; *nelements = 0; if (priv && (priv->screenConfigs != NULL) && (screen >= 0) && (screen <= ScreenCount(dpy)) && (priv->screenConfigs[screen]->configs != NULL) && (priv->screenConfigs[screen]->configs->fbconfigID != (int) GLX_DONT_CARE)) { unsigned num_configs = 0; __GLcontextModes *modes; for (modes = priv->screenConfigs[screen]->configs; modes != NULL; modes = modes->next) { if (modes->fbconfigID != (int) GLX_DONT_CARE) { num_configs++; } } config = (__GLcontextModes **) Xmalloc(sizeof(__GLcontextModes *) * num_configs); if (config != NULL) { *nelements = num_configs; i = 0; for (modes = priv->screenConfigs[screen]->configs; modes != NULL; modes = modes->next) { if (modes->fbconfigID != (int) GLX_DONT_CARE) { config[i] = modes; i++; } } } } return (GLXFBConfig *) config; } PUBLIC int glXGetFBConfigAttrib(Display * dpy, GLXFBConfig config, int attribute, int *value) { __GLcontextModes *const modes = ValidateGLXFBConfig(dpy, config); return (modes != NULL) ? _gl_get_context_mode_data(modes, attribute, value) : GLXBadFBConfig; } PUBLIC XVisualInfo * glXGetVisualFromFBConfig(Display * dpy, GLXFBConfig config) { XVisualInfo visualTemplate; __GLcontextModes *fbconfig = (__GLcontextModes *) config; int count; /* ** Get a list of all visuals, return if list is empty */ visualTemplate.visualid = fbconfig->visualID; return XGetVisualInfo(dpy, VisualIDMask, &visualTemplate, &count); } #ifndef GLX_USE_APPLEGL /* ** GLX_SGI_swap_control */ static int __glXSwapIntervalSGI(int interval) { xGLXVendorPrivateReq *req; GLXContext gc = __glXGetCurrentContext(); __GLXscreenConfigs *psc; Display *dpy; CARD32 *interval_ptr; CARD8 opcode; if (gc == NULL) { return GLX_BAD_CONTEXT; } if (interval <= 0) { return GLX_BAD_VALUE; } #ifdef __DRI_SWAP_CONTROL if (gc->driContext) { __GLXscreenConfigs * const psc = GetGLXScreenConfigs( gc->currentDpy, gc->screen ); __GLXDRIdrawable *pdraw = GetGLXDRIDrawable(gc->currentDpy, gc->currentDrawable, NULL); if (psc->swapControl != NULL && pdraw != NULL) { psc->swapControl->setSwapInterval(pdraw->driDrawable, interval); return 0; } else if (pdraw == NULL) { return GLX_BAD_CONTEXT; } } #endif psc = GetGLXScreenConfigs( gc->currentDpy, gc->screen); #ifdef GLX_DIRECT_RENDERING if (gc->driContext && psc->driScreen && psc->driScreen->setSwapInterval) { __GLXDRIdrawable *pdraw = GetGLXDRIDrawable(gc->currentDpy, gc->currentDrawable, NULL); psc->driScreen->setSwapInterval(pdraw, interval); return 0; } #endif dpy = gc->currentDpy; opcode = __glXSetupForCommand(dpy); if (!opcode) { return 0; } /* Send the glXSwapIntervalSGI request */ LockDisplay(dpy); GetReqExtra(GLXVendorPrivate, sizeof(CARD32), req); req->reqType = opcode; req->glxCode = X_GLXVendorPrivate; req->vendorCode = X_GLXvop_SwapIntervalSGI; req->contextTag = gc->currentContextTag; interval_ptr = (CARD32 *) (req + 1); *interval_ptr = interval; UnlockDisplay(dpy); SyncHandle(); XFlush(dpy); return 0; } /* ** GLX_MESA_swap_control */ static int __glXSwapIntervalMESA(unsigned int interval) { GLXContext gc = __glXGetCurrentContext(); #ifdef __DRI_SWAP_CONTROL if (gc != NULL && gc->driContext) { __GLXscreenConfigs *const psc = GetGLXScreenConfigs(gc->currentDpy, gc->screen); if ((psc != NULL) && (psc->driScreen != NULL)) { __GLXDRIdrawable *pdraw = GetGLXDRIDrawable(gc->currentDpy, gc->currentDrawable, NULL); if (psc->swapControl != NULL && pdraw != NULL) { psc->swapControl->setSwapInterval(pdraw->driDrawable, interval); return 0; } } } #endif #ifdef GLX_DIRECT_RENDERING if (gc != NULL && gc->driContext) { __GLXscreenConfigs *psc; psc = GetGLXScreenConfigs( gc->currentDpy, gc->screen); if (psc->driScreen && psc->driScreen->setSwapInterval) { __GLXDRIdrawable *pdraw = GetGLXDRIDrawable(gc->currentDpy, gc->currentDrawable, NULL); psc->driScreen->setSwapInterval(pdraw, interval); return 0; } } #endif return GLX_BAD_CONTEXT; } static int __glXGetSwapIntervalMESA(void) { #ifdef __DRI_SWAP_CONTROL GLXContext gc = __glXGetCurrentContext(); if (gc != NULL && gc->driContext) { __GLXscreenConfigs *const psc = GetGLXScreenConfigs(gc->currentDpy, gc->screen); if ((psc != NULL) && (psc->driScreen != NULL)) { __GLXDRIdrawable *pdraw = GetGLXDRIDrawable(gc->currentDpy, gc->currentDrawable, NULL); if (psc->swapControl != NULL && pdraw != NULL) { return psc->swapControl->getSwapInterval(pdraw->driDrawable); } } } #endif #ifdef GLX_DIRECT_RENDERING if (gc != NULL && gc->driContext) { __GLXscreenConfigs *psc; psc = GetGLXScreenConfigs( gc->currentDpy, gc->screen); if (psc->driScreen && psc->driScreen->getSwapInterval) { __GLXDRIdrawable *pdraw = GetGLXDRIDrawable(gc->currentDpy, gc->currentDrawable, NULL); return psc->driScreen->getSwapInterval(pdraw); } } #endif return 0; } /* ** GLX_MESA_swap_frame_usage */ static GLint __glXBeginFrameTrackingMESA(Display * dpy, GLXDrawable drawable) { int status = GLX_BAD_CONTEXT; #ifdef __DRI_FRAME_TRACKING int screen = 0; __GLXDRIdrawable *pdraw = GetGLXDRIDrawable(dpy, drawable, &screen); __GLXscreenConfigs *const psc = GetGLXScreenConfigs(dpy, screen); if (pdraw != NULL && psc->frameTracking != NULL) status = psc->frameTracking->frameTracking(pdraw->driDrawable, GL_TRUE); #else (void) dpy; (void) drawable; #endif return status; } static GLint __glXEndFrameTrackingMESA(Display * dpy, GLXDrawable drawable) { int status = GLX_BAD_CONTEXT; #ifdef __DRI_FRAME_TRACKING int screen = 0; __GLXDRIdrawable *pdraw = GetGLXDRIDrawable(dpy, drawable, &screen); __GLXscreenConfigs *psc = GetGLXScreenConfigs(dpy, screen); if (pdraw != NULL && psc->frameTracking != NULL) status = psc->frameTracking->frameTracking(pdraw->driDrawable, GL_FALSE); #else (void) dpy; (void) drawable; #endif return status; } static GLint __glXGetFrameUsageMESA(Display * dpy, GLXDrawable drawable, GLfloat * usage) { int status = GLX_BAD_CONTEXT; #ifdef __DRI_FRAME_TRACKING int screen = 0; __GLXDRIdrawable *const pdraw = GetGLXDRIDrawable(dpy, drawable, &screen); __GLXscreenConfigs *const psc = GetGLXScreenConfigs(dpy, screen); if (pdraw != NULL && psc->frameTracking != NULL) { int64_t sbc, missedFrames; float lastMissedUsage; status = psc->frameTracking->queryFrameTracking(pdraw->driDrawable, &sbc, &missedFrames, &lastMissedUsage, usage); } #else (void) dpy; (void) drawable; (void) usage; #endif return status; } static GLint __glXQueryFrameTrackingMESA(Display * dpy, GLXDrawable drawable, int64_t * sbc, int64_t * missedFrames, GLfloat * lastMissedUsage) { int status = GLX_BAD_CONTEXT; #ifdef __DRI_FRAME_TRACKING int screen = 0; __GLXDRIdrawable *pdraw = GetGLXDRIDrawable(dpy, drawable, &screen); __GLXscreenConfigs *const psc = GetGLXScreenConfigs(dpy, screen); if (pdraw != NULL && psc->frameTracking != NULL) { float usage; status = psc->frameTracking->queryFrameTracking(pdraw->driDrawable, sbc, missedFrames, lastMissedUsage, &usage); } #else (void) dpy; (void) drawable; (void) sbc; (void) missedFrames; (void) lastMissedUsage; #endif return status; } /* ** GLX_SGI_video_sync */ static int __glXGetVideoSyncSGI(unsigned int *count) { int64_t ust, msc, sbc; int ret; GLXContext gc = __glXGetCurrentContext(); __GLXscreenConfigs *psc; #ifdef GLX_DIRECT_RENDERING __GLXDRIdrawable *pdraw; #endif if (!gc) return GLX_BAD_CONTEXT; #ifdef GLX_DIRECT_RENDERING if (!gc->driContext) return GLX_BAD_CONTEXT; #endif psc = GetGLXScreenConfigs(gc->currentDpy, gc->screen); #ifdef GLX_DIRECT_RENDERING pdraw = GetGLXDRIDrawable(gc->currentDpy, gc->currentDrawable, NULL); #endif /* FIXME: Looking at the GLX_SGI_video_sync spec in the extension registry, * FIXME: there should be a GLX encoding for this call. I can find no * FIXME: documentation for the GLX encoding. */ #ifdef __DRI_MEDIA_STREAM_COUNTER if ( psc->msc && psc->driScreen ) { ret = (*psc->msc->getDrawableMSC)(psc->__driScreen, pdraw->driDrawable, &msc); *count = (unsigned) msc; return (ret == 0) ? 0 : GLX_BAD_CONTEXT; } #endif #ifdef GLX_DIRECT_RENDERING if (psc->driScreen && psc->driScreen->getDrawableMSC) { ret = psc->driScreen->getDrawableMSC(psc, pdraw, &ust, &msc, &sbc); *count = (unsigned) msc; return (ret == True) ? 0 : GLX_BAD_CONTEXT; } #endif return GLX_BAD_CONTEXT; } static int __glXWaitVideoSyncSGI(int divisor, int remainder, unsigned int *count) { GLXContext gc = __glXGetCurrentContext(); __GLXscreenConfigs *psc; #ifdef GLX_DIRECT_RENDERING __GLXDRIdrawable *pdraw; #endif int64_t ust, msc, sbc; int ret; if (divisor <= 0 || remainder < 0) return GLX_BAD_VALUE; if (!gc) return GLX_BAD_CONTEXT; #ifdef GLX_DIRECT_RENDERING if (!gc->driContext) return GLX_BAD_CONTEXT; #endif psc = GetGLXScreenConfigs( gc->currentDpy, gc->screen); #ifdef GLX_DIRECT_RENDERING pdraw = GetGLXDRIDrawable(gc->currentDpy, gc->currentDrawable, NULL); #endif #ifdef __DRI_MEDIA_STREAM_COUNTER if (psc->msc != NULL && psc->driScreen ) { ret = (*psc->msc->waitForMSC)(pdraw->driDrawable, 0, divisor, remainder, &msc, &sbc); *count = (unsigned) msc; return (ret == 0) ? 0 : GLX_BAD_CONTEXT; } #endif #ifdef GLX_DIRECT_RENDERING if (psc->driScreen && psc->driScreen->waitForMSC) { ret = psc->driScreen->waitForMSC(pdraw, 0, divisor, remainder, &ust, &msc, &sbc); *count = (unsigned) msc; return (ret == True) ? 0 : GLX_BAD_CONTEXT; } #endif return GLX_BAD_CONTEXT; } #endif /* GLX_USE_APPLEGL */ /* ** GLX_SGIX_fbconfig ** Many of these functions are aliased to GLX 1.3 entry points in the ** GLX_functions table. */ PUBLIC GLX_ALIAS(int, glXGetFBConfigAttribSGIX, (Display * dpy, GLXFBConfigSGIX config, int attribute, int *value), (dpy, config, attribute, value), glXGetFBConfigAttrib) PUBLIC GLX_ALIAS(GLXFBConfigSGIX *, glXChooseFBConfigSGIX, (Display * dpy, int screen, int *attrib_list, int *nelements), (dpy, screen, attrib_list, nelements), glXChooseFBConfig) PUBLIC GLX_ALIAS(XVisualInfo *, glXGetVisualFromFBConfigSGIX, (Display * dpy, GLXFBConfigSGIX config), (dpy, config), glXGetVisualFromFBConfig) PUBLIC GLXPixmap glXCreateGLXPixmapWithConfigSGIX(Display * dpy, GLXFBConfigSGIX config, Pixmap pixmap) { #ifndef GLX_USE_APPLEGL xGLXVendorPrivateWithReplyReq *vpreq; xGLXCreateGLXPixmapWithConfigSGIXReq *req; GLXPixmap xid = None; CARD8 opcode; __GLXscreenConfigs *psc; #endif const __GLcontextModes *const fbconfig = (__GLcontextModes *) config; if ((dpy == NULL) || (config == NULL)) { return None; } #ifdef GLX_USE_APPLEGL if(apple_glx_pixmap_create(dpy, fbconfig->screen, pixmap, fbconfig)) return None; return pixmap; #else psc = GetGLXScreenConfigs(dpy, fbconfig->screen); if ((psc != NULL) && __glXExtensionBitIsEnabled(psc, SGIX_fbconfig_bit)) { opcode = __glXSetupForCommand(dpy); if (!opcode) { return None; } /* Send the glXCreateGLXPixmapWithConfigSGIX request */ LockDisplay(dpy); GetReqExtra(GLXVendorPrivateWithReply, sz_xGLXCreateGLXPixmapWithConfigSGIXReq - sz_xGLXVendorPrivateWithReplyReq, vpreq); req = (xGLXCreateGLXPixmapWithConfigSGIXReq *) vpreq; req->reqType = opcode; req->glxCode = X_GLXVendorPrivateWithReply; req->vendorCode = X_GLXvop_CreateGLXPixmapWithConfigSGIX; req->screen = fbconfig->screen; req->fbconfig = fbconfig->fbconfigID; req->pixmap = pixmap; req->glxpixmap = xid = XAllocID(dpy); UnlockDisplay(dpy); SyncHandle(); } return xid; #endif } PUBLIC GLXContext glXCreateContextWithConfigSGIX(Display * dpy, GLXFBConfigSGIX config, int renderType, GLXContext shareList, Bool allowDirect) { GLXContext gc = NULL; const __GLcontextModes *const fbconfig = (__GLcontextModes *) config; __GLXscreenConfigs *psc; if ((dpy == NULL) || (config == NULL)) { return None; } psc = GetGLXScreenConfigs(dpy, fbconfig->screen); if ((psc != NULL) && __glXExtensionBitIsEnabled(psc, SGIX_fbconfig_bit)) { gc = CreateContext(dpy, fbconfig->fbconfigID, fbconfig, shareList, allowDirect, X_GLXvop_CreateContextWithConfigSGIX, renderType, fbconfig->screen); } return gc; } PUBLIC GLXFBConfigSGIX glXGetFBConfigFromVisualSGIX(Display * dpy, XVisualInfo * vis) { __GLXdisplayPrivate *priv; __GLXscreenConfigs *psc = NULL; if ((GetGLXPrivScreenConfig(dpy, vis->screen, &priv, &psc) != Success) && __glXExtensionBitIsEnabled(psc, SGIX_fbconfig_bit) && (psc->configs->fbconfigID != (int) GLX_DONT_CARE)) { return (GLXFBConfigSGIX) _gl_context_modes_find_visual(psc->configs, vis->visualid); } return NULL; } #ifndef GLX_USE_APPLEGL /* ** GLX_SGIX_swap_group */ static void __glXJoinSwapGroupSGIX(Display * dpy, GLXDrawable drawable, GLXDrawable member) { (void) dpy; (void) drawable; (void) member; } /* ** GLX_SGIX_swap_barrier */ static void __glXBindSwapBarrierSGIX(Display * dpy, GLXDrawable drawable, int barrier) { (void) dpy; (void) drawable; (void) barrier; } static Bool __glXQueryMaxSwapBarriersSGIX(Display * dpy, int screen, int *max) { (void) dpy; (void) screen; (void) max; return False; } /* ** GLX_OML_sync_control */ static Bool __glXGetSyncValuesOML(Display * dpy, GLXDrawable drawable, int64_t * ust, int64_t * msc, int64_t * sbc) { __GLXdisplayPrivate * const priv = __glXInitialize(dpy); int i, ret; #ifdef GLX_DIRECT_RENDERING __GLXDRIdrawable *pdraw; #endif __GLXscreenConfigs *psc; if (!priv) return False; #ifdef GLX_DIRECT_RENDERING pdraw = GetGLXDRIDrawable(dpy, drawable, &i); #endif psc = priv->screenConfigs[i]; #if defined(__DRI_SWAP_BUFFER_COUNTER) && defined(__DRI_MEDIA_STREAM_COUNTER) if (pdraw && psc->sbc && psc->msc) return ( (pdraw && psc->sbc && psc->msc) && ((*psc->msc->getMSC)(psc->driScreen, msc) == 0) && ((*psc->sbc->getSBC)(pdraw->driDrawable, sbc) == 0) && (__glXGetUST(ust) == 0) ); #endif #ifdef GLX_DIRECT_RENDERING if (pdraw && psc && psc->driScreen && psc->driScreen->getDrawableMSC) { ret = psc->driScreen->getDrawableMSC(psc, pdraw, ust, msc, sbc); return ret; } #endif return False; } #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL) _X_HIDDEN GLboolean __driGetMscRateOML(__DRIdrawable * draw, int32_t * numerator, int32_t * denominator, void *private) { #ifdef XF86VIDMODE __GLXscreenConfigs *psc; XF86VidModeModeLine mode_line; int dot_clock; int i; __GLXDRIdrawable *glxDraw = private; (void) draw; psc = glxDraw->psc; if (XF86VidModeQueryVersion(psc->dpy, &i, &i) && XF86VidModeGetModeLine(psc->dpy, psc->scr, &dot_clock, &mode_line)) { unsigned n = dot_clock * 1000; unsigned d = mode_line.vtotal * mode_line.htotal; # define V_INTERLACE 0x010 # define V_DBLSCAN 0x020 if (mode_line.flags & V_INTERLACE) n *= 2; else if (mode_line.flags & V_DBLSCAN) d *= 2; /* The OML_sync_control spec requires that if the refresh rate is a * whole number, that the returned numerator be equal to the refresh * rate and the denominator be 1. */ if (n % d == 0) { n /= d; d = 1; } else { static const unsigned f[] = { 13, 11, 7, 5, 3, 2, 0 }; /* This is a poor man's way to reduce a fraction. It's far from * perfect, but it will work well enough for this situation. */ for (i = 0; f[i] != 0; i++) { while (n % f[i] == 0 && d % f[i] == 0) { d /= f[i]; n /= f[i]; } } } *numerator = n; *denominator = d; return True; } else return False; #else (void) draw; (void) numerator; (void) denominator; (void) private; return False; #endif } #endif /** * Determine the refresh rate of the specified drawable and display. * * \param dpy Display whose refresh rate is to be determined. * \param drawable Drawable whose refresh rate is to be determined. * \param numerator Numerator of the refresh rate. * \param demoninator Denominator of the refresh rate. * \return If the refresh rate for the specified display and drawable could * be calculated, True is returned. Otherwise False is returned. * * \note This function is implemented entirely client-side. A lot of other * functionality is required to export GLX_OML_sync_control, so on * XFree86 this function can be called for direct-rendering contexts * when GLX_OML_sync_control appears in the client extension string. */ _X_HIDDEN GLboolean __glXGetMscRateOML(Display * dpy, GLXDrawable drawable, int32_t * numerator, int32_t * denominator) { #if defined( GLX_DIRECT_RENDERING ) && defined( XF86VIDMODE ) __GLXDRIdrawable *draw = GetGLXDRIDrawable(dpy, drawable, NULL); if (draw == NULL) return False; return __driGetMscRateOML(draw->driDrawable, numerator, denominator, draw); #else (void) dpy; (void) drawable; (void) numerator; (void) denominator; #endif return False; } static int64_t __glXSwapBuffersMscOML(Display * dpy, GLXDrawable drawable, int64_t target_msc, int64_t divisor, int64_t remainder) { GLXContext gc = __glXGetCurrentContext(); int screen; #ifdef GLX_DIRECT_RENDERING __GLXDRIdrawable *pdraw = GetGLXDRIDrawable(dpy, drawable, &screen); #endif __GLXscreenConfigs *const psc = GetGLXScreenConfigs(dpy, screen); if (!gc) /* no GLX for this */ return -1; #ifdef GLX_DIRECT_RENDERING if (!pdraw || !gc->driContext) return -1; #endif /* The OML_sync_control spec says these should "generate a GLX_BAD_VALUE * error", but it also says "It [glXSwapBuffersMscOML] will return a value * of -1 if the function failed because of errors detected in the input * parameters" */ if (divisor < 0 || remainder < 0 || target_msc < 0) return -1; if (divisor > 0 && remainder >= divisor) return -1; if (target_msc == 0 && divisor == 0 && remainder == 0) remainder = 1; #ifdef __DRI_SWAP_BUFFER_COUNTER if (psc->counters != NULL) return (*psc->sbc->swapBuffersMSC)(pdraw->driDrawable, target_msc, divisor, remainder); #endif #ifdef GLX_DIRECT_RENDERING if (psc->driScreen && psc->driScreen->swapBuffers) return (*psc->driScreen->swapBuffers)(pdraw, target_msc, divisor, remainder); #endif return -1; } static Bool __glXWaitForMscOML(Display * dpy, GLXDrawable drawable, int64_t target_msc, int64_t divisor, int64_t remainder, int64_t * ust, int64_t * msc, int64_t * sbc) { int screen; #ifdef GLX_DIRECT_RENDERING __GLXDRIdrawable *pdraw = GetGLXDRIDrawable(dpy, drawable, &screen); #endif __GLXscreenConfigs * const psc = GetGLXScreenConfigs( dpy, screen ); int ret; /* The OML_sync_control spec says these should "generate a GLX_BAD_VALUE * error", but the return type in the spec is Bool. */ if (divisor < 0 || remainder < 0 || target_msc < 0) return False; if (divisor > 0 && remainder >= divisor) return False; #ifdef __DRI_MEDIA_STREAM_COUNTER if (pdraw != NULL && psc->msc != NULL) { ret = (*psc->msc->waitForMSC) (pdraw->driDrawable, target_msc, divisor, remainder, msc, sbc); /* __glXGetUST returns zero on success and non-zero on failure. * This function returns True on success and False on failure. */ return ((ret == 0) && (__glXGetUST(ust) == 0)); } #endif #ifdef GLX_DIRECT_RENDERING if (pdraw && psc->driScreen && psc->driScreen->waitForMSC) { ret = psc->driScreen->waitForMSC(pdraw, target_msc, divisor, remainder, ust, msc, sbc); return ret; } #endif return False; } static Bool __glXWaitForSbcOML(Display * dpy, GLXDrawable drawable, int64_t target_sbc, int64_t * ust, int64_t * msc, int64_t * sbc) { int screen; #ifdef GLX_DIRECT_RENDERING __GLXDRIdrawable *pdraw = GetGLXDRIDrawable(dpy, drawable, &screen); #endif __GLXscreenConfigs *const psc = GetGLXScreenConfigs(dpy, screen); int ret; /* The OML_sync_control spec says this should "generate a GLX_BAD_VALUE * error", but the return type in the spec is Bool. */ if (target_sbc < 0) return False; #ifdef __DRI_SWAP_BUFFER_COUNTER if (pdraw != NULL && psc->sbc != NULL) { ret = (*psc->sbc->waitForSBC) (pdraw->driDrawable, target_sbc, msc, sbc); /* __glXGetUST returns zero on success and non-zero on failure. * This function returns True on success and False on failure. */ return ((ret == 0) && (__glXGetUST(ust) == 0)); } #endif #ifdef GLX_DIRECT_RENDERING if (pdraw && psc->driScreen && psc->driScreen->waitForSBC) { ret = psc->driScreen->waitForSBC(pdraw, target_sbc, ust, msc, sbc); return ret; } #endif return False; } /*@}*/ /** * Mesa extension stubs. These will help reduce portability problems. */ /*@{*/ /** * Release all buffers associated with the specified GLX drawable. * * \todo * This function was intended for stand-alone Mesa. The issue there is that * the library doesn't get any notification when a window is closed. In * DRI there is a similar but slightly different issue. When GLX 1.3 is * supported, there are 3 different functions to destroy a drawable. It * should be possible to create GLX protocol (or have it determine which * protocol to use based on the type of the drawable) to have one function * do the work of 3. For the direct-rendering case, this function could * just call the driver's \c __DRIdrawableRec::destroyDrawable function. * This would reduce the frequency with which \c __driGarbageCollectDrawables * would need to be used. This really should be done as part of the new DRI * interface work. * * \sa http://oss.sgi.com/projects/ogl-sample/registry/MESA/release_buffers.txt * __driGarbageCollectDrawables * glXDestroyGLXPixmap * glXDestroyPbuffer glXDestroyPixmap glXDestroyWindow * glXDestroyGLXPbufferSGIX glXDestroyGLXVideoSourceSGIX */ static Bool __glXReleaseBuffersMESA(Display * dpy, GLXDrawable d) { (void) dpy; (void) d; return False; } PUBLIC GLXPixmap glXCreateGLXPixmapMESA(Display * dpy, XVisualInfo * visual, Pixmap pixmap, Colormap cmap) { (void) dpy; (void) visual; (void) pixmap; (void) cmap; return 0; } /*@}*/ /** * GLX_MESA_copy_sub_buffer */ #define X_GLXvop_CopySubBufferMESA 5154 /* temporary */ static void __glXCopySubBufferMESA(Display * dpy, GLXDrawable drawable, int x, int y, int width, int height) { xGLXVendorPrivateReq *req; GLXContext gc; GLXContextTag tag; CARD32 *drawable_ptr; INT32 *x_ptr, *y_ptr, *w_ptr, *h_ptr; CARD8 opcode; #ifdef __DRI_COPY_SUB_BUFFER int screen; __GLXDRIdrawable *pdraw = GetGLXDRIDrawable(dpy, drawable, &screen); if (pdraw != NULL) { __GLXscreenConfigs *const psc = GetGLXScreenConfigs(dpy, screen); if (psc->driScreen->copySubBuffer != NULL) { glFlush(); (*psc->driScreen->copySubBuffer) (pdraw, x, y, width, height); } return; } #endif opcode = __glXSetupForCommand(dpy); if (!opcode) return; /* ** The calling thread may or may not have a current context. If it ** does, send the context tag so the server can do a flush. */ gc = __glXGetCurrentContext(); if ((gc != NULL) && (dpy == gc->currentDpy) && ((drawable == gc->currentDrawable) || (drawable == gc->currentReadable))) { tag = gc->currentContextTag; } else { tag = 0; } LockDisplay(dpy); GetReqExtra(GLXVendorPrivate, sizeof(CARD32) + sizeof(INT32) * 4, req); req->reqType = opcode; req->glxCode = X_GLXVendorPrivate; req->vendorCode = X_GLXvop_CopySubBufferMESA; req->contextTag = tag; drawable_ptr = (CARD32 *) (req + 1); x_ptr = (INT32 *) (drawable_ptr + 1); y_ptr = (INT32 *) (drawable_ptr + 2); w_ptr = (INT32 *) (drawable_ptr + 3); h_ptr = (INT32 *) (drawable_ptr + 4); *drawable_ptr = drawable; *x_ptr = x; *y_ptr = y; *w_ptr = width; *h_ptr = height; UnlockDisplay(dpy); SyncHandle(); } /** * GLX_EXT_texture_from_pixmap */ static void glx_indirect_bind_tex_image(Display * dpy, GLXDrawable drawable, int buffer, const int *attrib_list) { xGLXVendorPrivateReq *req; GLXContext gc = __glXGetCurrentContext(); CARD32 *drawable_ptr; INT32 *buffer_ptr; CARD32 *num_attrib_ptr; CARD32 *attrib_ptr; CARD8 opcode; unsigned int i; i = 0; if (attrib_list) { while (attrib_list[i * 2] != None) i++; } opcode = __glXSetupForCommand(dpy); if (!opcode) return; LockDisplay(dpy); GetReqExtra(GLXVendorPrivate, 12 + 8 * i, req); req->reqType = opcode; req->glxCode = X_GLXVendorPrivate; req->vendorCode = X_GLXvop_BindTexImageEXT; req->contextTag = gc->currentContextTag; drawable_ptr = (CARD32 *) (req + 1); buffer_ptr = (INT32 *) (drawable_ptr + 1); num_attrib_ptr = (CARD32 *) (buffer_ptr + 1); attrib_ptr = (CARD32 *) (num_attrib_ptr + 1); *drawable_ptr = drawable; *buffer_ptr = buffer; *num_attrib_ptr = (CARD32) i; i = 0; if (attrib_list) { while (attrib_list[i * 2] != None) { *attrib_ptr++ = (CARD32) attrib_list[i * 2 + 0]; *attrib_ptr++ = (CARD32) attrib_list[i * 2 + 1]; i++; } } UnlockDisplay(dpy); SyncHandle(); } static void glx_indirect_release_tex_image(Display * dpy, GLXDrawable drawable, int buffer) { xGLXVendorPrivateReq *req; GLXContext gc = __glXGetCurrentContext(); CARD32 *drawable_ptr; INT32 *buffer_ptr; CARD8 opcode; opcode = __glXSetupForCommand(dpy); if (!opcode) return; LockDisplay(dpy); GetReqExtra(GLXVendorPrivate, sizeof(CARD32) + sizeof(INT32), req); req->reqType = opcode; req->glxCode = X_GLXVendorPrivate; req->vendorCode = X_GLXvop_ReleaseTexImageEXT; req->contextTag = gc->currentContextTag; drawable_ptr = (CARD32 *) (req + 1); buffer_ptr = (INT32 *) (drawable_ptr + 1); *drawable_ptr = drawable; *buffer_ptr = buffer; UnlockDisplay(dpy); SyncHandle(); } static const struct glx_context_vtable glx_indirect_context_vtable = { glx_indirect_bind_tex_image, glx_indirect_release_tex_image, }; /*@{*/ static void __glXBindTexImageEXT(Display * dpy, GLXDrawable drawable, int buffer, const int *attrib_list) { GLXContext gc = __glXGetCurrentContext(); if (gc == NULL || gc->vtable->bind_tex_image == NULL) return; gc->vtable->bind_tex_image(dpy, drawable, buffer, attrib_list); } static void __glXReleaseTexImageEXT(Display * dpy, GLXDrawable drawable, int buffer) { GLXContext gc = __glXGetCurrentContext(); if (gc == NULL || gc->vtable->release_tex_image == NULL) return; gc->vtable->release_tex_image(dpy, drawable, buffer); } /*@}*/ #endif /* GLX_USE_APPLEGL */ /** * \c strdup is actually not a standard ANSI C or POSIX routine. * Irix will not define it if ANSI mode is in effect. * * \sa strdup */ _X_HIDDEN char * __glXstrdup(const char *str) { char *copy; copy = (char *) Xmalloc(strlen(str) + 1); if (!copy) return NULL; strcpy(copy, str); return copy; } /* ** glXGetProcAddress support */ struct name_address_pair { const char *Name; GLvoid *Address; }; #define GLX_FUNCTION(f) { # f, (GLvoid *) f } #define GLX_FUNCTION2(n,f) { # n, (GLvoid *) f } static const struct name_address_pair GLX_functions[] = { /*** GLX_VERSION_1_0 ***/ GLX_FUNCTION(glXChooseVisual), GLX_FUNCTION(glXCopyContext), GLX_FUNCTION(glXCreateContext), GLX_FUNCTION(glXCreateGLXPixmap), GLX_FUNCTION(glXDestroyContext), GLX_FUNCTION(glXDestroyGLXPixmap), GLX_FUNCTION(glXGetConfig), GLX_FUNCTION(glXGetCurrentContext), GLX_FUNCTION(glXGetCurrentDrawable), GLX_FUNCTION(glXIsDirect), GLX_FUNCTION(glXMakeCurrent), GLX_FUNCTION(glXQueryExtension), GLX_FUNCTION(glXQueryVersion), GLX_FUNCTION(glXSwapBuffers), GLX_FUNCTION(glXUseXFont), GLX_FUNCTION(glXWaitGL), GLX_FUNCTION(glXWaitX), /*** GLX_VERSION_1_1 ***/ GLX_FUNCTION(glXGetClientString), GLX_FUNCTION(glXQueryExtensionsString), GLX_FUNCTION(glXQueryServerString), /*** GLX_VERSION_1_2 ***/ GLX_FUNCTION(glXGetCurrentDisplay), /*** GLX_VERSION_1_3 ***/ GLX_FUNCTION(glXChooseFBConfig), GLX_FUNCTION(glXCreateNewContext), GLX_FUNCTION(glXCreatePbuffer), GLX_FUNCTION(glXCreatePixmap), GLX_FUNCTION(glXCreateWindow), GLX_FUNCTION(glXDestroyPbuffer), GLX_FUNCTION(glXDestroyPixmap), GLX_FUNCTION(glXDestroyWindow), GLX_FUNCTION(glXGetCurrentReadDrawable), GLX_FUNCTION(glXGetFBConfigAttrib), GLX_FUNCTION(glXGetFBConfigs), GLX_FUNCTION(glXGetSelectedEvent), GLX_FUNCTION(glXGetVisualFromFBConfig), GLX_FUNCTION(glXMakeContextCurrent), GLX_FUNCTION(glXQueryContext), GLX_FUNCTION(glXQueryDrawable), GLX_FUNCTION(glXSelectEvent), #ifndef GLX_USE_APPLEGL /*** GLX_SGI_swap_control ***/ GLX_FUNCTION2(glXSwapIntervalSGI, __glXSwapIntervalSGI), /*** GLX_SGI_video_sync ***/ GLX_FUNCTION2(glXGetVideoSyncSGI, __glXGetVideoSyncSGI), GLX_FUNCTION2(glXWaitVideoSyncSGI, __glXWaitVideoSyncSGI), /*** GLX_SGI_make_current_read ***/ GLX_FUNCTION2(glXMakeCurrentReadSGI, glXMakeContextCurrent), GLX_FUNCTION2(glXGetCurrentReadDrawableSGI, glXGetCurrentReadDrawable), /*** GLX_EXT_import_context ***/ GLX_FUNCTION(glXFreeContextEXT), GLX_FUNCTION(glXGetContextIDEXT), GLX_FUNCTION2(glXGetCurrentDisplayEXT, glXGetCurrentDisplay), GLX_FUNCTION(glXImportContextEXT), GLX_FUNCTION2(glXQueryContextInfoEXT, glXQueryContext), #endif /*** GLX_SGIX_fbconfig ***/ GLX_FUNCTION2(glXGetFBConfigAttribSGIX, glXGetFBConfigAttrib), GLX_FUNCTION2(glXChooseFBConfigSGIX, glXChooseFBConfig), GLX_FUNCTION(glXCreateGLXPixmapWithConfigSGIX), GLX_FUNCTION(glXCreateContextWithConfigSGIX), GLX_FUNCTION2(glXGetVisualFromFBConfigSGIX, glXGetVisualFromFBConfig), GLX_FUNCTION(glXGetFBConfigFromVisualSGIX), #ifndef GLX_USE_APPLEGL /*** GLX_SGIX_pbuffer ***/ GLX_FUNCTION(glXCreateGLXPbufferSGIX), GLX_FUNCTION(glXDestroyGLXPbufferSGIX), GLX_FUNCTION(glXQueryGLXPbufferSGIX), GLX_FUNCTION(glXSelectEventSGIX), GLX_FUNCTION(glXGetSelectedEventSGIX), /*** GLX_SGIX_swap_group ***/ GLX_FUNCTION2(glXJoinSwapGroupSGIX, __glXJoinSwapGroupSGIX), /*** GLX_SGIX_swap_barrier ***/ GLX_FUNCTION2(glXBindSwapBarrierSGIX, __glXBindSwapBarrierSGIX), GLX_FUNCTION2(glXQueryMaxSwapBarriersSGIX, __glXQueryMaxSwapBarriersSGIX), /*** GLX_MESA_copy_sub_buffer ***/ GLX_FUNCTION2(glXCopySubBufferMESA, __glXCopySubBufferMESA), /*** GLX_MESA_pixmap_colormap ***/ GLX_FUNCTION(glXCreateGLXPixmapMESA), /*** GLX_MESA_release_buffers ***/ GLX_FUNCTION2(glXReleaseBuffersMESA, __glXReleaseBuffersMESA), /*** GLX_MESA_swap_control ***/ GLX_FUNCTION2(glXSwapIntervalMESA, __glXSwapIntervalMESA), GLX_FUNCTION2(glXGetSwapIntervalMESA, __glXGetSwapIntervalMESA), /*** GLX_MESA_swap_frame_usage ***/ GLX_FUNCTION2(glXBeginFrameTrackingMESA, __glXBeginFrameTrackingMESA), GLX_FUNCTION2(glXEndFrameTrackingMESA, __glXEndFrameTrackingMESA), GLX_FUNCTION2(glXGetFrameUsageMESA, __glXGetFrameUsageMESA), GLX_FUNCTION2(glXQueryFrameTrackingMESA, __glXQueryFrameTrackingMESA), #endif /*** GLX_ARB_get_proc_address ***/ GLX_FUNCTION(glXGetProcAddressARB), /*** GLX 1.4 ***/ GLX_FUNCTION2(glXGetProcAddress, glXGetProcAddressARB), #ifndef GLX_USE_APPLEGL /*** GLX_OML_sync_control ***/ GLX_FUNCTION2(glXWaitForSbcOML, __glXWaitForSbcOML), GLX_FUNCTION2(glXWaitForMscOML, __glXWaitForMscOML), GLX_FUNCTION2(glXSwapBuffersMscOML, __glXSwapBuffersMscOML), GLX_FUNCTION2(glXGetMscRateOML, __glXGetMscRateOML), GLX_FUNCTION2(glXGetSyncValuesOML, __glXGetSyncValuesOML), /*** GLX_EXT_texture_from_pixmap ***/ GLX_FUNCTION2(glXBindTexImageEXT, __glXBindTexImageEXT), GLX_FUNCTION2(glXReleaseTexImageEXT, __glXReleaseTexImageEXT), #endif #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL) /*** DRI configuration ***/ GLX_FUNCTION(glXGetScreenDriver), GLX_FUNCTION(glXGetDriverConfig), #endif {NULL, NULL} /* end of list */ }; #ifndef GLX_USE_APPLEGL static const GLvoid * get_glx_proc_address(const char *funcName) { GLuint i; /* try static functions */ for (i = 0; GLX_functions[i].Name; i++) { if (strcmp(GLX_functions[i].Name, funcName) == 0) return GLX_functions[i].Address; } return NULL; } #endif /** * Get the address of a named GL function. This is the pre-GLX 1.4 name for * \c glXGetProcAddress. * * \param procName Name of a GL or GLX function. * \returns A pointer to the named function * * \sa glXGetProcAddress */ PUBLIC void (*glXGetProcAddressARB(const GLubyte * procName)) (void) { typedef void (*gl_function) (void); gl_function f; /* Search the table of GLX and internal functions first. If that * fails and the supplied name could be a valid core GL name, try * searching the core GL function table. This check is done to prevent * DRI based drivers from searching the core GL function table for * internal API functions. */ #ifdef GLX_USE_APPLEGL f = (gl_function) apple_glx_get_proc_address(procName); #else f = (gl_function) get_glx_proc_address((const char *) procName); if ((f == NULL) && (procName[0] == 'g') && (procName[1] == 'l') && (procName[2] != 'X')) { f = (gl_function) _glapi_get_proc_address((const char *) procName); } #endif return f; } /** * Get the address of a named GL function. This is the GLX 1.4 name for * \c glXGetProcAddressARB. * * \param procName Name of a GL or GLX function. * \returns A pointer to the named function * * \sa glXGetProcAddressARB */ PUBLIC void (*glXGetProcAddress(const GLubyte * procName)) (void) #if defined(__GNUC__) && !defined(GLX_ALIAS_UNSUPPORTED) __attribute__ ((alias("glXGetProcAddressARB"))); #else { return glXGetProcAddressARB(procName); } #endif /* __GNUC__ */ #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL) /** * Get the unadjusted system time (UST). Currently, the UST is measured in * microseconds since Epoc. The actual resolution of the UST may vary from * system to system, and the units may vary from release to release. * Drivers should not call this function directly. They should instead use * \c glXGetProcAddress to obtain a pointer to the function. * * \param ust Location to store the 64-bit UST * \returns Zero on success or a negative errno value on failure. * * \sa glXGetProcAddress, PFNGLXGETUSTPROC * * \since Internal API version 20030317. */ _X_HIDDEN int __glXGetUST(int64_t * ust) { struct timeval tv; if (ust == NULL) { return -EFAULT; } if (gettimeofday(&tv, NULL) == 0) { ust[0] = (tv.tv_sec * 1000000) + tv.tv_usec; return 0; } else { return -errno; } } #endif /* GLX_DIRECT_RENDERING */