1 files changed, 505 insertions, 0 deletions
diff --git a/nx-X11/programs/Xserver/hw/nxagent/X/NXglxext.c.X.original b/nx-X11/programs/Xserver/hw/nxagent/X/NXglxext.c.X.original
new file mode 100644
index 000000000..fa1382983
--- /dev/null
+++ b/nx-X11/programs/Xserver/hw/nxagent/X/NXglxext.c.X.original
@@ -0,0 +1,505 @@
+/* $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"
+
+
+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)
+{
+    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];
+    return (*proc)(cl, (GLbyte *) stuff);
+}
+
+static int __glXSwapDispatch(ClientPtr client)
+{
+    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];
+    return (*proc)(cl, (GLbyte *) stuff);
+}
+
+int __glXNoSuchSingleOpcode(__GLXclientState *cl, GLbyte *pc)
+{
+    return BadRequest;
+}
+
+void __glXNoSuchRenderOpcode(GLbyte *pc)
+{
+    return;
+}
+