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diff --git a/indra/llprimitive/llphysicsextensions/LLConvexDecompositionStubImpl.h b/indra/llprimitive/llphysicsextensions/LLConvexDecompositionStubImpl.h
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+/**
+* @file   LLConvexDecompositionStubImpl.h
+* @author falcon@lindenlab.com
+* @brief  A stub implementation of LLConvexDecomposition
+*
+* $LicenseInfo:firstyear=2011&license=viewerlgpl$
+* Second Life Viewer Source Code
+* Copyright (C) 20112010, Linden Research, Inc.
+* 
+* This library is free software; you can redistribute it and/or
+* modify it under the terms of the GNU Lesser General Public
+* License as published by the Free Software Foundation;
+* version 2.1 of the License only.
+* 
+* This library is distributed in the hope that it will be useful,
+* but WITHOUT ANY WARRANTY; without even the implied warranty of
+* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+* Lesser General Public License for more details.
+* 
+* You should have received a copy of the GNU Lesser General Public
+* License along with this library; if not, write to the Free Software
+* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+* 
+* Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+* $/LicenseInfo$
+*/
+
+#ifndef LL_CONVEX_DECOMP_UTIL_H
+#define LL_CONVEX_DECOMP_UTIL_H
+
+#include "llconvexdecomposition.h"
+
+class LLConvexDecompositionImpl : public LLConvexDecomposition
+{
+	public:
+
+		virtual ~LLConvexDecompositionImpl() {}
+
+		static LLConvexDecomposition* getInstance();
+		static LLCDResult initSystem();
+		static LLCDResult initThread();
+		static LLCDResult quitThread();
+		static LLCDResult quitSystem();
+
+		void genDecomposition(int& decomp);
+		void deleteDecomposition(int decomp);
+		void bindDecomposition(int decomp);
+
+		// Sets *paramsOut to the address of the LLCDParam array and returns
+		// the length of the array
+		int getParameters(const LLCDParam** paramsOut)
+		{
+			*paramsOut = NULL;
+			return 0;
+		}
+
+		int getStages(const LLCDStageData** stagesOut)
+		{
+			*stagesOut = NULL;
+			return 0;
+		}
+
+		// Set a parameter by name. Returns false if out of bounds or unsupported parameter
+		LLCDResult	setParam(const char* name, float val);
+		LLCDResult	setParam(const char* name, int val);
+		LLCDResult	setParam(const char* name, bool val);
+		LLCDResult	setMeshData( const LLCDMeshData* data, bool vertex_based );
+		LLCDResult	registerCallback(int stage, llcdCallbackFunc callback );
+
+		LLCDResult	executeStage(int stage);
+
+		int getNumHullsFromStage(int stage);
+
+		LLCDResult	getHullFromStage( int stage, int hull, LLCDHull* hullOut );
+		LLCDResult  getSingleHull( LLCDHull* hullOut ) ;
+
+		// TODO: Implement lock of some kind to disallow this call if data not yet ready
+		LLCDResult	getMeshFromStage( int stage, int hull, LLCDMeshData* meshDataOut);
+		LLCDResult	getMeshFromHull( LLCDHull* hullIn, LLCDMeshData* meshOut );
+
+		// For visualizing convex hull shapes in the viewer physics shape display
+		LLCDResult generateSingleHullMeshFromMesh( LLCDMeshData* meshIn, LLCDMeshData* meshOut);
+
+		/// Debug
+		void loadMeshData(const char* fileIn, LLCDMeshData** meshDataOut);
+
+	private:
+		LLConvexDecompositionImpl() {}
+};
+
+#endif //LL_CONVEX_DECOMP_UTIL_H
+