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diff --git a/sdk/extensions/physx/source/physics/NvBlastExtPxCollisionBuilderImpl.h b/sdk/extensions/physx/source/physics/NvBlastExtPxCollisionBuilderImpl.h
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+// This code contains NVIDIA Confidential Information and is disclosed to you
+// under a form of NVIDIA software license agreement provided separately to you.
+//
+// Notice
+// NVIDIA Corporation and its licensors retain all intellectual property and
+// proprietary rights in and to this software and related documentation and
+// any modifications thereto. Any use, reproduction, disclosure, or
+// distribution of this software and related documentation without an express
+// license agreement from NVIDIA Corporation is strictly prohibited.
+//
+// ALL NVIDIA DESIGN SPECIFICATIONS, CODE ARE PROVIDED "AS IS.". NVIDIA MAKES
+// NO WARRANTIES, EXPRESSED, IMPLIED, STATUTORY, OR OTHERWISE WITH RESPECT TO
+// THE MATERIALS, AND EXPRESSLY DISCLAIMS ALL IMPLIED WARRANTIES OF NONINFRINGEMENT,
+// MERCHANTABILITY, AND FITNESS FOR A PARTICULAR PURPOSE.
+//
+// Information and code furnished is believed to be accurate and reliable.
+// However, NVIDIA Corporation assumes no responsibility for the consequences of use of such
+// information or for any infringement of patents or other rights of third parties that may
+// result from its use. No license is granted by implication or otherwise under any patent
+// or patent rights of NVIDIA Corporation. Details are subject to change without notice.
+// This code supersedes and replaces all information previously supplied.
+// NVIDIA Corporation products are not authorized for use as critical
+// components in life support devices or systems without express written approval of
+// NVIDIA Corporation.
+//
+// Copyright (c) 2016-2018 NVIDIA Corporation. All rights reserved.
+
+
+#ifndef NVBLASTEXTPXCOLLISIONBUILDERIMPL_H
+#define NVBLASTEXTPXCOLLISIONBUILDERIMPL_H
+
+#include "NvBlastExtPxCollisionBuilder.h"
+#include "NvBlastExtAuthoringTypes.h"
+
+namespace physx
+{
+	class PxCooking;
+	class PxPhysicsInsertionCallback;
+}
+namespace Nv
+{
+	namespace Blast
+	{
+
+		struct CollisionHullImpl : public CollisionHull
+		{
+			CollisionHullImpl() {};
+			CollisionHullImpl(const CollisionHull& hullToCopy);
+			~CollisionHullImpl();
+		};
+
+		class ExtPxCollisionBuilderImpl : public ExtPxCollisionBuilder
+		{
+		public:
+			ExtPxCollisionBuilderImpl(physx::PxCooking* cooking,
+				physx::PxPhysicsInsertionCallback* insertionCallback) : mCooking(cooking), mInsertionCallback(insertionCallback) {}
+	        virtual ~ExtPxCollisionBuilderImpl() {};
+			void release() override;
+			CollisionHull* buildCollisionGeometry(uint32_t verticesCount, const NvcVec3* vertexData) override;
+			void releaseCollisionHull(CollisionHull* hull) const override;
+
+			physx::PxConvexMesh* buildConvexMesh(const CollisionHull& hull) override;
+			void buildPhysicsChunks(uint32_t chunkCount, uint32_t* hullOffsets, CollisionHull** hulls,
+				ExtPxChunk* physicsChunks, ExtPxSubchunk* physicsSubchunks) override;
+		private:
+			physx::PxCooking* mCooking;
+			physx::PxPhysicsInsertionCallback* mInsertionCallback;
+		};
+
+	}  // namespace Blast
+}  // namespace Nv
+
+
+#endif  // ifndef NVBLASTEXTPXCOLLISIONBUILDERIMPL_H