/* * 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 #include #include #include "xf86dri.h" #endif #if defined(USE_XCB) #include #include #include #endif static const char __glXGLXClientVendorName[] = "SGI"; static const char __glXGLXClientVersion[] = "1.4"; /****************************************************************************/ #ifdef GLX_DIRECT_RENDERING static Bool windowExistsFlag; static int windowExistsErrorHandler(Display *dpy, XErrorEvent *xerr) { 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); } extern __GLXDRIdrawable * GetGLXDRIDrawable(Display *dpy, GLXDrawable drawable, int * const scrn_num); /** * 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->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; 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, XVisualInfo *vis, const __GLcontextModes * const fbconfig, GLXContext shareList, Bool allowDirect, GLXContextID contextID, Bool use_glx_1_3, int renderType) { GLXContext gc; #ifdef GLX_DIRECT_RENDERING int screen = (fbconfig == NULL) ? vis->screen : fbconfig->screen; __GLXscreenConfigs * const psc = GetGLXScreenConfigs(dpy, screen); #endif if ( dpy == NULL ) return NULL; gc = AllocateGLXContext(dpy); if (!gc) return NULL; if (None == contextID) { if ( (vis == NULL) && (fbconfig == NULL) ) return NULL; #ifdef GLX_DIRECT_RENDERING if (allowDirect && psc->driScreen) { const __GLcontextModes * mode; if (fbconfig == NULL) { 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 = gc->majorOpcode; error.minorCode = X_GLXCreateContext; _XError(dpy, &error); return None; } } else { mode = fbconfig; } gc->driContext = psc->driScreen->createContext(psc, mode, gc, shareList, renderType); if (gc->driContext != NULL) { gc->screen = mode->screen; gc->psc = psc; gc->mode = mode; gc->isDirect = GL_TRUE; } } #endif LockDisplay(dpy); if ( fbconfig == NULL ) { 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 = vis->visualid; req->screen = vis->screen; req->shareList = shareList ? shareList->xid : None; #ifdef GLX_DIRECT_RENDERING req->isDirect = gc->driContext != NULL; #else req->isDirect = 0; #endif } else if ( use_glx_1_3 ) { 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 = fbconfig->fbconfigID; req->screen = fbconfig->screen; req->renderType = renderType; req->shareList = shareList ? shareList->xid : None; #ifdef GLX_DIRECT_RENDERING req->isDirect = gc->driContext != NULL; #else req->isDirect = 0; #endif } else { 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 = fbconfig->fbconfigID; req->screen = fbconfig->screen; req->renderType = renderType; req->shareList = shareList ? shareList->xid : None; #ifdef GLX_DIRECT_RENDERING req->isDirect = gc->driContext != NULL; #else req->isDirect = 0; #endif } UnlockDisplay(dpy); SyncHandle(); gc->imported = GL_FALSE; } else { gc->xid = contextID; gc->imported = GL_TRUE; } return gc; } PUBLIC GLXContext glXCreateContext(Display *dpy, XVisualInfo *vis, GLXContext shareList, Bool allowDirect) { return CreateContext(dpy, vis, NULL, shareList, allowDirect, None, False, 0); } _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) { 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; #ifdef GLX_DIRECT_RENDERING /* 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); if (gc->currentDpy) { /* Have to free later cuz it's in use now */ __glXUnlock(); } else { /* Destroy the handle if not current to anybody */ __glXUnlock(); __glXFreeContext(gc); } 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(); } } 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) { xGLXWaitGLReq *req; GLXContext gc = __glXGetCurrentContext(); Display *dpy = gc->currentDpy; if (!dpy) return; /* Flush any pending commands out */ __glXFlushRenderBuffer(gc, gc->pc); #ifdef GLX_DIRECT_RENDERING if (gc->driContext) { /* This bit of ugliness unwraps the glFinish function */ #ifdef glFinish #undef glFinish #endif glFinish(); 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(); } /* ** Put a barrier in the token stream that forces X to finish its ** work before GL can proceed. */ PUBLIC void glXWaitX(void) { xGLXWaitXReq *req; GLXContext gc = __glXGetCurrentContext(); Display *dpy = gc->currentDpy; if (!dpy) return; /* Flush any pending commands out */ __glXFlushRenderBuffer(gc, gc->pc); #ifdef GLX_DIRECT_RENDERING if (gc->driContext) { 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(); } PUBLIC void glXUseXFont(Font font, int first, int count, int listBase) { xGLXUseXFontReq *req; GLXContext gc = __glXGetCurrentContext(); Display *dpy = gc->currentDpy; if (!dpy) return; /* Flush any pending commands out */ (void) __glXFlushRenderBuffer(gc, gc->pc); #ifdef GLX_DIRECT_RENDERING 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(); } /************************************************************************/ /* ** Copy the source context to the destination context using the ** attribute "mask". */ PUBLIC void glXCopyContext(Display *dpy, GLXContext source, GLXContext dest, unsigned long mask) { xGLXCopyContextReq *req; GLXContext gc = __glXGetCurrentContext(); GLXContextTag tag; CARD8 opcode; opcode = __glXSetupForCommand(dpy); if (!opcode) { return; } #ifdef GLX_DIRECT_RENDERING 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(); } /** * 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; #ifdef GLX_DIRECT_RENDERING } else if (gc->driContext) { return GL_TRUE; #endif } return __glXIsDirect(dpy, gc->xid); } PUBLIC GLXPixmap glXCreateGLXPixmap(Display *dpy, XVisualInfo *vis, Pixmap pixmap) { 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(); return xid; } /* ** Destroy the named pixmap */ PUBLIC void glXDestroyGLXPixmap(Display *dpy, GLXPixmap glxpixmap) { 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(); } PUBLIC void glXSwapBuffers(Display *dpy, GLXDrawable drawable) { GLXContext gc; GLXContextTag tag; CARD8 opcode; #ifdef USE_XCB xcb_connection_t *c; #else xGLXSwapBuffersReq *req; #endif #ifdef GLX_DIRECT_RENDERING __GLXDRIdrawable *pdraw = GetGLXDRIDrawable(dpy, drawable, NULL); if (pdraw != NULL) { glFlush(); (*pdraw->psc->driScreen->swapBuffers)(pdraw); 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 */ } /* ** 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 ( (a-> param != GLX_DONT_CARE) \ && (a-> param != b-> param) ) { \ return False; \ } \ } while ( 0 ) #define MATCH_MINIMUM( param ) \ do { \ if ( (a-> param != 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 ) /** * 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 ); if ( ((a->drawableType & b->drawableType) == 0) || ((a->renderType & b->renderType) == 0) ) { return False; } /* 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 != 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 */ 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)) ) { best_config = modes; } } /* ** If no visual is acceptable, return None ** Otherwise, create an XVisualInfo list with just the selected X visual ** and return this. */ if (best_config != NULL) { XVisualInfo visualTemplate; int i; visualTemplate.screen = screen; visualTemplate.visualid = best_config->visualID; visualList = XGetVisualInfo( dpy, VisualScreenMask|VisualIDMask, &visualTemplate, &i ); } 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, #ifdef GLX_DIRECT_RENDERING (psc->driScreen != NULL), #else GL_FALSE, #endif priv->minorVersion); } return psc->effectiveGLXexts; } PUBLIC const char *glXGetClientString( Display *dpy, int name ) { 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, (const uint8_t *)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) /** * 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; int i; nPropListBytes = numValues << 3; propList = (int *) Xmalloc(nPropListBytes); if (NULL == propList) { retval = 0; } else { _XRead(dpy, (char *)propList, nPropListBytes); 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_SCREEN: ctx->screen = *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; default: pProp++; continue; } } Xfree((char *)propList); retval = Success; } } UnlockDisplay(dpy); SyncHandle(); return retval; } PUBLIC int glXQueryContext(Display *dpy, GLXContext ctx, int attribute, int *value) { int retVal; /* get the information from the server if we don't have it already */ #ifdef GLX_DIRECT_RENDERING if (!ctx->driContext && (ctx->mode == NULL)) { #else if (ctx->mode == NULL) { #endif retVal = __glXQueryContextInfo(dpy, ctx); if (Success != retVal) return retVal; } switch (attribute) { case GLX_SHARE_CONTEXT_EXT: *value = (int)(ctx->share_xid); break; case GLX_VISUAL_ID_EXT: *value = ctx->mode ? ctx->mode->visualID : None; break; 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) { GLXContext ctx; if (contextID == None) { return NULL; } if (__glXIsDirect(dpy, contextID)) { return NULL; } ctx = CreateContext(dpy, NULL, NULL, NULL, False, contextID, False, 0); if (NULL != ctx) { if (Success != __glXQueryContextInfo(dpy, ctx)) { return NULL; } } return ctx; } 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) { return CreateContext( dpy, NULL, (__GLcontextModes *) config, shareList, allowDirect, None, True, renderType ); } 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->screenConfigs != NULL) && (screen >= 0) && (screen <= ScreenCount(dpy)) && (priv->screenConfigs[screen].configs != NULL) && (priv->screenConfigs[screen].configs->fbconfigID != GLX_DONT_CARE) ) { unsigned num_configs = 0; __GLcontextModes * modes; for ( modes = priv->screenConfigs[screen].configs ; modes != NULL ; modes = modes->next ) { if ( modes->fbconfigID != 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 != 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); } /* ** GLX_SGI_swap_control */ static int __glXSwapIntervalSGI(int interval) { xGLXVendorPrivateReq *req; GLXContext gc = __glXGetCurrentContext(); 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 { return GLX_BAD_CONTEXT; } } #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) { #ifdef __DRI_SWAP_CONTROL GLXContext gc = __glXGetCurrentContext(); if ( interval < 0 ) { return GLX_BAD_VALUE; } 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; } } } #else (void) interval; #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 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; __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; __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; __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; __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) { /* 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 GLXContext gc = __glXGetCurrentContext(); if (gc != NULL && gc->driContext) { __GLXscreenConfigs * const psc = GetGLXScreenConfigs( gc->currentDpy, gc->screen ); if ( psc->msc && psc->driScreen ) { __GLXDRIdrawable *pdraw = GetGLXDRIDrawable(gc->currentDpy, gc->currentDrawable, NULL); int64_t temp; int ret; ret = (*psc->msc->getDrawableMSC)(psc->__driScreen, pdraw->driDrawable, &temp); *count = (unsigned) temp; return (ret == 0) ? 0 : GLX_BAD_CONTEXT; } } #else (void) count; #endif return GLX_BAD_CONTEXT; } static int __glXWaitVideoSyncSGI(int divisor, int remainder, unsigned int *count) { #ifdef __DRI_MEDIA_STREAM_COUNTER GLXContext gc = __glXGetCurrentContext(); if ( divisor <= 0 || remainder < 0 ) return GLX_BAD_VALUE; if (gc != NULL && gc->driContext) { __GLXscreenConfigs * const psc = GetGLXScreenConfigs( gc->currentDpy, gc->screen ); if (psc->msc != NULL && psc->driScreen ) { __GLXDRIdrawable *pdraw = GetGLXDRIDrawable(gc->currentDpy, gc->currentDrawable, NULL); int ret; int64_t msc; int64_t sbc; ret = (*psc->msc->waitForMSC)(pdraw->driDrawable, 0, divisor, remainder, &msc, &sbc); *count = (unsigned) msc; return (ret == 0) ? 0 : GLX_BAD_CONTEXT; } } #else (void) count; #endif return GLX_BAD_CONTEXT; } /* ** 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) { xGLXVendorPrivateWithReplyReq *vpreq; xGLXCreateGLXPixmapWithConfigSGIXReq *req; GLXPixmap xid = None; CARD8 opcode; 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 ) ) { 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; } 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, NULL, (__GLcontextModes *) config, shareList, allowDirect, None, False, renderType ); } return gc; } PUBLIC GLXFBConfigSGIX glXGetFBConfigFromVisualSGIX(Display *dpy, XVisualInfo *vis) { __GLXdisplayPrivate *priv; __GLXscreenConfigs *psc; if ( (GetGLXPrivScreenConfig( dpy, vis->screen, & priv, & psc ) != Success) && __glXExtensionBitIsEnabled( psc, SGIX_fbconfig_bit ) && (psc->configs->fbconfigID != GLX_DONT_CARE) ) { return (GLXFBConfigSGIX) _gl_context_modes_find_visual( psc->configs, vis->visualid ); } return NULL; } /* ** 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) { #if defined(__DRI_SWAP_BUFFER_COUNTER) && defined(__DRI_MEDIA_STREAM_COUNTER) __GLXdisplayPrivate * const priv = __glXInitialize(dpy); if ( priv != NULL ) { int i; __GLXDRIdrawable *pdraw = GetGLXDRIDrawable(dpy, drawable, &i); __GLXscreenConfigs * const psc = &priv->screenConfigs[i]; assert( (pdraw == NULL) || (i != -1) ); return ( (pdraw && psc->sbc && psc->msc) && ((*psc->msc->getMSC)(psc->driScreen, msc) == 0) && ((*psc->sbc->getSBC)(pdraw->driDrawable, sbc) == 0) && (__glXGetUST(ust) == 0) ); } #else (void) dpy; (void) drawable; (void) ust; (void) msc; (void) sbc; #endif return False; } #ifdef GLX_DIRECT_RENDERING _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; 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 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) { #ifdef __DRI_SWAP_BUFFER_COUNTER int screen; __GLXDRIdrawable *pdraw = GetGLXDRIDrawable(dpy, drawable, &screen); __GLXscreenConfigs * const psc = GetGLXScreenConfigs( dpy, screen ); /* 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 (pdraw != NULL && psc->counters != NULL) return (*psc->sbc->swapBuffersMSC)(pdraw->driDrawable, target_msc, divisor, remainder); #else (void) dpy; (void) drawable; (void) target_msc; (void) divisor; (void) remainder; #endif return 0; } 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) { #ifdef __DRI_MEDIA_STREAM_COUNTER int screen; __GLXDRIdrawable *pdraw = GetGLXDRIDrawable(dpy, drawable, &screen); __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; 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) ); } #else (void) dpy; (void) drawable; (void) target_msc; (void) divisor; (void) remainder; (void) ust; (void) msc; (void) sbc; #endif return False; } static Bool __glXWaitForSbcOML(Display * dpy, GLXDrawable drawable, int64_t target_sbc, int64_t *ust, int64_t *msc, int64_t *sbc ) { #ifdef __DRI_SWAP_BUFFER_COUNTER int screen; __GLXDRIdrawable *pdraw = GetGLXDRIDrawable(dpy, drawable, &screen); __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; 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) ); } #else (void) dpy; (void) drawable; (void) target_sbc; (void) ust; (void) msc; (void) sbc; #endif return False; } /** * GLX_MESA_allocate_memory */ /*@{*/ PUBLIC void *glXAllocateMemoryMESA(Display *dpy, int scrn, size_t size, float readFreq, float writeFreq, float priority) { #ifdef __DRI_ALLOCATE __GLXscreenConfigs * const psc = GetGLXScreenConfigs( dpy, scrn ); if (psc && psc->allocate) return (*psc->allocate->allocateMemory)(psc->__driScreen, size, readFreq, writeFreq, priority); #else (void) dpy; (void) scrn; (void) size; (void) readFreq; (void) writeFreq; (void) priority; #endif /* GLX_DIRECT_RENDERING */ return NULL; } PUBLIC void glXFreeMemoryMESA(Display *dpy, int scrn, void *pointer) { #ifdef __DRI_ALLOCATE __GLXscreenConfigs * const psc = GetGLXScreenConfigs( dpy, scrn ); if (psc && psc->allocate) (*psc->allocate->freeMemory)(psc->__driScreen, pointer); #else (void) dpy; (void) scrn; (void) pointer; #endif /* GLX_DIRECT_RENDERING */ } PUBLIC GLuint glXGetMemoryOffsetMESA( Display *dpy, int scrn, const void *pointer ) { #ifdef __DRI_ALLOCATE __GLXscreenConfigs * const psc = GetGLXScreenConfigs( dpy, scrn ); if (psc && psc->allocate) return (*psc->allocate->memoryOffset)(psc->__driScreen, pointer); #else (void) dpy; (void) scrn; (void) pointer; #endif /* GLX_DIRECT_RENDERING */ return ~0L; } /*@}*/ /** * 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 __glXBindTexImageEXT(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; if (gc == NULL) return; i = 0; if (attrib_list) { while (attrib_list[i * 2] != None) i++; } #ifdef GLX_DIRECT_RENDERING if (gc->driContext) { __GLXDRIdrawable *pdraw = GetGLXDRIDrawable(dpy, drawable, NULL); if (pdraw != NULL) (*pdraw->psc->texBuffer->setTexBuffer)(gc->__driContext, pdraw->textureTarget, pdraw->driDrawable); return; } #endif 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 __glXReleaseTexImageEXT(Display *dpy, GLXDrawable drawable, int buffer) { xGLXVendorPrivateReq *req; GLXContext gc = __glXGetCurrentContext(); CARD32 *drawable_ptr; INT32 *buffer_ptr; CARD8 opcode; if (gc == NULL) return; #ifdef GLX_DIRECT_RENDERING if (gc->driContext) return; #endif 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(); } /*@}*/ /** * \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 ), /*** 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 ), /*** GLX_SGIX_fbconfig ***/ GLX_FUNCTION2( glXGetFBConfigAttribSGIX, glXGetFBConfigAttrib ), GLX_FUNCTION2( glXChooseFBConfigSGIX, glXChooseFBConfig ), GLX_FUNCTION( glXCreateGLXPixmapWithConfigSGIX ), GLX_FUNCTION( glXCreateContextWithConfigSGIX ), GLX_FUNCTION2( glXGetVisualFromFBConfigSGIX, glXGetVisualFromFBConfig ), GLX_FUNCTION( glXGetFBConfigFromVisualSGIX ), /*** 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_allocate_memory ***/ GLX_FUNCTION( glXAllocateMemoryMESA ), GLX_FUNCTION( glXFreeMemoryMESA ), GLX_FUNCTION( glXGetMemoryOffsetMESA ), /*** 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 ), /*** GLX_ARB_get_proc_address ***/ GLX_FUNCTION( glXGetProcAddressARB ), /*** GLX 1.4 ***/ GLX_FUNCTION2( glXGetProcAddress, glXGetProcAddressARB ), /*** 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 ), #ifdef GLX_DIRECT_RENDERING /*** DRI configuration ***/ GLX_FUNCTION( glXGetScreenDriver ), GLX_FUNCTION( glXGetDriverConfig ), #endif { NULL, NULL } /* end of list */ }; 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; } /** * 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. */ 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); } 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__ */ #ifdef GLX_DIRECT_RENDERING /** * 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 */