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diff --git a/src/render/Qt3DSRenderOcclusionQuery.h b/src/render/Qt3DSRenderOcclusionQuery.h
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+++ b/src/render/Qt3DSRenderOcclusionQuery.h
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+/****************************************************************************
+**
+** Copyright (C) 2008-2012 NVIDIA Corporation.
+** Copyright (C) 2017 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of Qt 3D Studio.
+**
+** $QT_BEGIN_LICENSE:GPL$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3 or (at your option) any later version
+** approved by the KDE Free Qt Foundation. The licenses are as published by
+** the Free Software Foundation and appearing in the file LICENSE.GPL3
+** included in the packaging of this file. Please review the following
+** information to ensure the GNU General Public License requirements will
+** be met: https://www.gnu.org/licenses/gpl-3.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+#pragma once
+#ifndef QT3DS_RENDER_OCCLUSION_QUERY_H
+#define QT3DS_RENDER_OCCLUSION_QUERY_H
+
+#include "render/Qt3DSRenderQueryBase.h"
+
+namespace qt3ds {
+class NVFoundationBase;
+}
+
+namespace qt3ds {
+namespace render {
+
+    // forward declaration
+    class NVRenderContextImpl;
+
+    class NVRenderOcclusionQuery : public NVRenderQueryBase
+    {
+    public:
+        /**
+         * @brief constructor
+         *
+         * @param[in] context		Pointer to context
+         * @param[in] fnd			Pointer to foundation
+         *
+         * @return No return.
+         */
+        NVRenderOcclusionQuery(NVRenderContextImpl &context, NVFoundationBase &fnd);
+
+        ///< destructor
+        ~NVRenderOcclusionQuery();
+
+        /**
+         * @brief Get query type
+         *
+         * @return Return query type
+         */
+        NVRenderQueryType::Enum GetQueryType() const override
+        {
+            return NVRenderQueryType::Samples;
+        }
+
+        /**
+         * @brief Get a pointer to the foundation
+         *
+         * @return pointer to foundation
+         */
+        NVFoundationBase &GetFoundation() { return m_Foundation; }
+
+        /**
+         * @brief begin a query
+         *
+         * @return no return.
+         */
+        void Begin() override;
+
+        /**
+         * @brief end a query
+         *
+         * @return no return.
+         */
+        void End() override;
+
+        /**
+         * @brief Get the result of a query
+         *
+         * @param[out] params	Contains result of query regarding query type
+         *
+         * @return no return.
+         */
+        void GetResult(QT3DSU32 *params) override;
+
+        /**
+         * @brief query if a result is available
+         *
+         *
+         * @return true if available.
+         */
+        virtual bool GetResultAvailable();
+
+        /*
+         * @brief static creation function
+         *
+         * * @return a occlusion query object on success
+         */
+        static NVRenderOcclusionQuery *Create(NVRenderContextImpl &context);
+    };
+}
+}
+
+#endif