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diff --git a/nx-X11/programs/Xserver/hw/nxagent/X/NXglxext.c.NX.original b/nx-X11/programs/Xserver/hw/nxagent/X/NXglxext.c.NX.original
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+/**************************************************************************/
+/* */
+/* Copyright (c) 2001, 2007 NoMachine, http://www.nomachine.com/. */
+/* */
+/* NXAGENT, NX protocol compression and NX extensions to this software */
+/* are copyright of NoMachine. Redistribution and use of the present */
+/* software is allowed according to terms specified in the file LICENSE */
+/* which comes in the source distribution. */
+/* */
+/* Check http://www.nomachine.com/licensing.html for applicability. */
+/* */
+/* NX and NoMachine are trademarks of NoMachine S.r.l. */
+/* */
+/* All rights reserved. */
+/* */
+/**************************************************************************/
+
+/* $XFree86: xc/programs/Xserver/GL/glx/glxext.c,v 1.9 2003/09/28 20:15:43 alanh Exp $
+** The contents of this file are subject to the GLX Public License Version 1.0
+** (the "License"). You may not use this file except in compliance with the
+** License. You may obtain a copy of the License at Silicon Graphics, Inc.,
+** attn: Legal Services, 2011 N. Shoreline Blvd., Mountain View, CA 94043
+** or at http://www.sgi.com/software/opensource/glx/license.html.
+**
+** Software distributed under the License is distributed on an "AS IS"
+** basis. ALL WARRANTIES ARE DISCLAIMED, INCLUDING, WITHOUT LIMITATION, ANY
+** IMPLIED WARRANTIES OF MERCHANTABILITY, OF FITNESS FOR A PARTICULAR
+** PURPOSE OR OF NON- INFRINGEMENT. See the License for the specific
+** language governing rights and limitations under the License.
+**
+** The Original Software is GLX version 1.2 source code, released February,
+** 1999. The developer of the Original Software is Silicon Graphics, Inc.
+** Those portions of the Subject Software created by Silicon Graphics, Inc.
+** are Copyright (c) 1991-9 Silicon Graphics, Inc. All Rights Reserved.
+**
+*/
+
+#define NEED_REPLIES
+#ifdef HAVE_DIX_CONFIG_H
+#include <dix-config.h>
+#endif
+
+#include "glxserver.h"
+#include <windowstr.h>
+#include <propertyst.h>
+#include <os.h>
+#include "g_disptab.h"
+#include "unpack.h"
+#include "glxutil.h"
+#include "glxext.h"
+#include "micmap.h"
+
+#include "Trap.h"
+
+#define PANIC
+#define WARNING
+#undef TEST
+#undef DEBUG
+
+void GlxWrapInitVisuals(miInitVisualsProcPtr *);
+void GlxSetVisualConfigs(int nconfigs,
+ __GLXvisualConfig *configs, void **privates);
+
+static __GLXextensionInfo *__glXExt /* = &__glDDXExtensionInfo */;
+
+/*
+** Forward declarations.
+*/
+static int __glXSwapDispatch(ClientPtr);
+static int __glXDispatch(ClientPtr);
+
+/*
+** Called when the extension is reset.
+*/
+static void ResetExtension(ExtensionEntry* extEntry)
+{
+ __glXFlushContextCache();
+ (*__glXExt->resetExtension)();
+ __glXScreenReset();
+}
+
+/*
+** Initialize the per-client context storage.
+*/
+static void ResetClientState(int clientIndex)
+{
+ __GLXclientState *cl = __glXClients[clientIndex];
+
+ if (cl->returnBuf) __glXFree(cl->returnBuf);
+ if (cl->largeCmdBuf) __glXFree(cl->largeCmdBuf);
+ if (cl->currentContexts) __glXFree(cl->currentContexts);
+ __glXMemset(cl, 0, sizeof(__GLXclientState));
+ /*
+ ** By default, assume that the client supports
+ ** GLX major version 1 minor version 0 protocol.
+ */
+ cl->GLClientmajorVersion = 1;
+ cl->GLClientminorVersion = 0;
+ if (cl->GLClientextensions) __glXFree(cl->GLClientextensions);
+
+}
+
+/*
+** Reset state used to keep track of large (multi-request) commands.
+*/
+void __glXResetLargeCommandStatus(__GLXclientState *cl)
+{
+ cl->largeCmdBytesSoFar = 0;
+ cl->largeCmdBytesTotal = 0;
+ cl->largeCmdRequestsSoFar = 0;
+ cl->largeCmdRequestsTotal = 0;
+}
+
+/*
+** This procedure is called when the client who created the context goes
+** away OR when glXDestroyContext is called. In either case, all we do is
+** flag that the ID is no longer valid, and (maybe) free the context.
+** use.
+*/
+static int ContextGone(__GLXcontext* cx, XID id)
+{
+ cx->idExists = GL_FALSE;
+ if (!cx->isCurrent) {
+ __glXFreeContext(cx);
+ }
+
+ return True;
+}
+
+/*
+** Free a client's state.
+*/
+static int ClientGone(int clientIndex, XID id)
+{
+ __GLXcontext *cx;
+ __GLXclientState *cl = __glXClients[clientIndex];
+ int i;
+
+ if (cl) {
+ /*
+ ** Free all the contexts that are current for this client.
+ */
+ for (i=0; i < cl->numCurrentContexts; i++) {
+ cx = cl->currentContexts[i];
+ if (cx) {
+ __glXDeassociateContext(cx);
+ cx->isCurrent = GL_FALSE;
+ if (!cx->idExists) {
+ __glXFreeContext(cx);
+ }
+ }
+ }
+ /*
+ ** Re-initialize the client state structure. Don't free it because
+ ** we'll probably get another client with this index and use the struct
+ ** again. There is a maximum of MAXCLIENTS of these structures.
+ */
+ ResetClientState(clientIndex);
+ }
+
+ return True;
+}
+
+/*
+** Free a GLX Pixmap.
+*/
+static int PixmapGone(__GLXpixmap *pGlxPixmap, XID id)
+{
+ PixmapPtr pPixmap = (PixmapPtr) pGlxPixmap->pDraw;
+
+ pGlxPixmap->idExists = False;
+ if (!pGlxPixmap->refcnt) {
+ /*
+ ** The DestroyPixmap routine should decrement the refcount and free
+ ** only if it's zero.
+ */
+ (*pGlxPixmap->pScreen->DestroyPixmap)(pPixmap);
+ __glXFree(pGlxPixmap);
+ }
+
+ return True;
+}
+
+/*
+** Free a context.
+*/
+GLboolean __glXFreeContext(__GLXcontext *cx)
+{
+ if (cx->idExists || cx->isCurrent) return GL_FALSE;
+
+ if (!cx->isDirect) {
+ if ((*cx->gc->exports.destroyContext)((__GLcontext *)cx->gc) == GL_FALSE) {
+ return GL_FALSE;
+ }
+ }
+ if (cx->feedbackBuf) __glXFree(cx->feedbackBuf);
+ if (cx->selectBuf) __glXFree(cx->selectBuf);
+ __glXFree(cx);
+ if (cx == __glXLastContext) {
+ __glXFlushContextCache();
+ }
+
+ return GL_TRUE;
+}
+
+extern RESTYPE __glXSwapBarrierRes;
+
+static int SwapBarrierGone(int screen, XID drawable)
+{
+ if (__glXSwapBarrierFuncs &&
+ __glXSwapBarrierFuncs[screen].bindSwapBarrierFunc != NULL) {
+ __glXSwapBarrierFuncs[screen].bindSwapBarrierFunc(screen, drawable, 0);
+ }
+ FreeResourceByType(drawable, __glXSwapBarrierRes, FALSE);
+ return True;
+}
+
+/************************************************************************/
+
+/*
+** These routines can be used to check whether a particular GL command
+** has caused an error. Specifically, we use them to check whether a
+** given query has caused an error, in which case a zero-length data
+** reply is sent to the client.
+*/
+
+static GLboolean errorOccured = GL_FALSE;
+
+/*
+** The GL was will call this routine if an error occurs.
+*/
+void __glXErrorCallBack(__GLinterface *gc, GLenum code)
+{
+ errorOccured = GL_TRUE;
+}
+
+/*
+** Clear the error flag before calling the GL command.
+*/
+void __glXClearErrorOccured(void)
+{
+ errorOccured = GL_FALSE;
+}
+
+/*
+** Check if the GL command caused an error.
+*/
+GLboolean __glXErrorOccured(void)
+{
+ return errorOccured;
+}
+
+/************************************************************************/
+
+/*
+** Initialize the GLX extension.
+*/
+void GlxExtensionInit(void)
+{
+ ExtensionEntry *extEntry;
+ int i;
+
+ __glXContextRes = CreateNewResourceType((DeleteType)ContextGone);
+ __glXClientRes = CreateNewResourceType((DeleteType)ClientGone);
+ __glXPixmapRes = CreateNewResourceType((DeleteType)PixmapGone);
+
+ /*
+ ** Add extension to server extensions.
+ */
+ extEntry = AddExtension(GLX_EXTENSION_NAME, __GLX_NUMBER_EVENTS,
+ __GLX_NUMBER_ERRORS, __glXDispatch,
+ __glXSwapDispatch, ResetExtension,
+ StandardMinorOpcode);
+ if (!extEntry) {
+ FatalError("__glXExtensionInit: AddExtensions failed\n");
+ return;
+ }
+ if (!AddExtensionAlias(GLX_EXTENSION_ALIAS, extEntry)) {
+ ErrorF("__glXExtensionInit: AddExtensionAlias failed\n");
+ return;
+ }
+
+ __glXBadContext = extEntry->errorBase + GLXBadContext;
+ __glXBadContextState = extEntry->errorBase + GLXBadContextState;
+ __glXBadDrawable = extEntry->errorBase + GLXBadDrawable;
+ __glXBadPixmap = extEntry->errorBase + GLXBadPixmap;
+ __glXBadContextTag = extEntry->errorBase + GLXBadContextTag;
+ __glXBadCurrentWindow = extEntry->errorBase + GLXBadCurrentWindow;
+ __glXBadRenderRequest = extEntry->errorBase + GLXBadRenderRequest;
+ __glXBadLargeRequest = extEntry->errorBase + GLXBadLargeRequest;
+ __glXUnsupportedPrivateRequest = extEntry->errorBase +
+ GLXUnsupportedPrivateRequest;
+
+ __glXSwapBarrierRes = CreateNewResourceType((DeleteType)SwapBarrierGone);
+
+ /*
+ ** Initialize table of client state. There is never a client 0.
+ */
+ for (i=1; i <= MAXCLIENTS; i++) {
+ __glXClients[i] = 0;
+ }
+
+ /*
+ ** Initialize screen specific data.
+ */
+ __glXScreenInit(screenInfo.numScreens);
+}
+
+/************************************************************************/
+
+Bool __glXCoreType(void)
+{
+ return __glXExt->type;
+}
+
+/************************************************************************/
+
+void GlxSetVisualConfigs(int nconfigs,
+ __GLXvisualConfig *configs, void **privates)
+{
+ (*__glXExt->setVisualConfigs)(nconfigs, configs, privates);
+}
+
+static miInitVisualsProcPtr saveInitVisualsProc;
+
+Bool GlxInitVisuals(VisualPtr *visualp, DepthPtr *depthp,
+ int *nvisualp, int *ndepthp,
+ int *rootDepthp, VisualID *defaultVisp,
+ unsigned long sizes, int bitsPerRGB,
+ int preferredVis)
+{
+ Bool ret;
+
+ if (saveInitVisualsProc) {
+ ret = saveInitVisualsProc(visualp, depthp, nvisualp, ndepthp,
+ rootDepthp, defaultVisp, sizes, bitsPerRGB,
+ preferredVis);
+ if (!ret)
+ return False;
+ }
+ (*__glXExt->initVisuals)(visualp, depthp, nvisualp, ndepthp, rootDepthp,
+ defaultVisp, sizes, bitsPerRGB);
+ return True;
+}
+
+void
+GlxWrapInitVisuals(miInitVisualsProcPtr *initVisProc)
+{
+ saveInitVisualsProc = *initVisProc;
+ *initVisProc = GlxInitVisuals;
+ /* HACK: this shouldn't be done here but it's the earliest time */
+ __glXExt = __glXglDDXExtensionInfo(); /* from GLcore */
+}
+
+/************************************************************************/
+
+void __glXFlushContextCache(void)
+{
+ __glXLastContext = 0;
+}
+
+/*
+** Make a context the current one for the GL (in this implementation, there
+** is only one instance of the GL, and we use it to serve all GL clients by
+** switching it between different contexts). While we are at it, look up
+** a context by its tag and return its (__GLXcontext *).
+*/
+__GLXcontext *__glXForceCurrent(__GLXclientState *cl, GLXContextTag tag,
+ int *error)
+{
+ __GLXcontext *cx;
+
+ /*
+ ** See if the context tag is legal; it is managed by the extension,
+ ** so if it's invalid, we have an implementation error.
+ */
+ cx = (__GLXcontext *) __glXLookupContextByTag(cl, tag);
+ if (!cx) {
+ cl->client->errorValue = tag;
+ *error = __glXBadContextTag;
+ return 0;
+ }
+
+ if (!cx->isDirect) {
+ if (cx->drawPriv == NULL) {
+ /*
+ ** The drawable has vanished. It must be a window, because only
+ ** windows can be destroyed from under us; GLX pixmaps are
+ ** refcounted and don't go away until no one is using them.
+ */
+ *error = __glXBadCurrentWindow;
+ return 0;
+ }
+ }
+
+ if (cx == __glXLastContext) {
+ /* No need to re-bind */
+ return cx;
+ }
+
+ /* Make this context the current one for the GL. */
+ if (!cx->isDirect) {
+ if (!(*cx->gc->exports.forceCurrent)((__GLcontext *)cx->gc)) {
+ /* Bind failed, and set the error code. Bummer */
+ cl->client->errorValue = cx->id;
+ *error = __glXBadContextState;
+ return 0;
+ }
+ }
+ __glXLastContext = cx;
+ return cx;
+}
+
+/************************************************************************/
+
+/*
+** Top level dispatcher; all commands are executed from here down.
+*/
+static int __glXDispatch(ClientPtr client)
+{
+ int result;
+
+ REQUEST(xGLXSingleReq);
+ CARD8 opcode;
+ int (*proc)(__GLXclientState *cl, GLbyte *pc);
+ __GLXclientState *cl;
+
+ opcode = stuff->glxCode;
+ cl = __glXClients[client->index];
+ if (!cl) {
+ cl = (__GLXclientState *) __glXMalloc(sizeof(__GLXclientState));
+ __glXClients[client->index] = cl;
+ if (!cl) {
+ return BadAlloc;
+ }
+ __glXMemset(cl, 0, sizeof(__GLXclientState));
+ }
+
+ if (!cl->inUse) {
+ /*
+ ** This is first request from this client. Associate a resource
+ ** with the client so we will be notified when the client dies.
+ */
+ XID xid = FakeClientID(client->index);
+ if (!AddResource( xid, __glXClientRes, (pointer)(long)client->index)) {
+ return BadAlloc;
+ }
+ ResetClientState(client->index);
+ cl->inUse = GL_TRUE;
+ cl->client = client;
+ }
+
+ /*
+ ** Check for valid opcode.
+ */
+ if (opcode >= __GLX_SINGLE_TABLE_SIZE) {
+ return BadRequest;
+ }
+
+ /*
+ ** If we're expecting a glXRenderLarge request, this better be one.
+ */
+ if ((cl->largeCmdRequestsSoFar != 0) && (opcode != X_GLXRenderLarge)) {
+ client->errorValue = stuff->glxCode;
+ return __glXBadLargeRequest;
+ }
+
+ /*
+ ** Use the opcode to index into the procedure table.
+ */
+ proc = __glXSingleTable[opcode];
+
+ /*
+ * Report upstream that we are
+ * dispatching a GLX operation.
+ */
+
+ nxagentGlxTrap = 1;
+
+ #ifdef TEST
+ fprintf(stderr, "__glXDispatch: Going to dispatch GLX operation [%d] for client [%d].\n",
+ opcode, client -> index);
+ #endif
+
+ result = (*proc)(cl, (GLbyte *) stuff);
+
+ nxagentGlxTrap = 0;
+
+ #ifdef TEST
+ fprintf(stderr, "__glXDispatch: Dispatched GLX operation [%d] for client [%d].\n",
+ opcode, client -> index);
+ #endif
+
+ return result;
+}
+
+static int __glXSwapDispatch(ClientPtr client)
+{
+ int result;
+
+ REQUEST(xGLXSingleReq);
+ CARD8 opcode;
+ int (*proc)(__GLXclientState *cl, GLbyte *pc);
+ __GLXclientState *cl;
+
+ opcode = stuff->glxCode;
+ cl = __glXClients[client->index];
+ if (!cl) {
+ cl = (__GLXclientState *) __glXMalloc(sizeof(__GLXclientState));
+ __glXClients[client->index] = cl;
+ if (!cl) {
+ return BadAlloc;
+ }
+ __glXMemset(cl, 0, sizeof(__GLXclientState));
+ }
+
+ if (!cl->inUse) {
+ /*
+ ** This is first request from this client. Associate a resource
+ ** with the client so we will be notified when the client dies.
+ */
+ XID xid = FakeClientID(client->index);
+ if (!AddResource( xid, __glXClientRes, (pointer)(long)client->index)) {
+ return BadAlloc;
+ }
+ ResetClientState(client->index);
+ cl->inUse = GL_TRUE;
+ cl->client = client;
+ }
+
+ /*
+ ** Check for valid opcode.
+ */
+ if (opcode >= __GLX_SINGLE_TABLE_SIZE) {
+ return BadRequest;
+ }
+
+ /*
+ ** Use the opcode to index into the procedure table.
+ */
+ proc = __glXSwapSingleTable[opcode];
+
+ /*
+ * Report upstream that we are
+ * dispatching a GLX operation.
+ */
+
+ nxagentGlxTrap = 1;
+
+ #ifdef TEST
+ fprintf(stderr, "__glXDispatch: Going to dispatch GLX operation [%d] for client [%d].\n",
+ opcode, client -> index);
+ #endif
+
+ result = (*proc)(cl, (GLbyte *) stuff);
+
+ nxagentGlxTrap = 0;
+
+ #ifdef TEST
+ fprintf(stderr, "__glXDispatch: Dispatched GLX operation [%d] for client [%d].\n",
+ opcode, client -> index);
+ #endif
+
+ return result;
+}
+
+int __glXNoSuchSingleOpcode(__GLXclientState *cl, GLbyte *pc)
+{
+ return BadRequest;
+}
+
+void __glXNoSuchRenderOpcode(GLbyte *pc)
+{
+ return;
+}
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