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diff --git a/src/Runtime/Source/render/backends/gl/Qt3DSRenderBackendShaderProgramGL.h b/src/Runtime/Source/render/backends/gl/Qt3DSRenderBackendShaderProgramGL.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_BACKEND_SHADER_PROGRAM_GL_H
+#define QT3DS_RENDER_BACKEND_SHADER_PROGRAM_GL_H
+
+#include "foundation/Qt3DSFoundation.h"
+#include "foundation/Utils.h"
+#include "render/Qt3DSRenderBaseTypes.h"
+
+namespace qt3ds {
+namespace render {
+
+    struct NVRenderBackendShaderInputEntryGL
+    {
+        CRegisteredString m_AttribName; ///< must be the same name as used in the vertex shader
+        QT3DSU32 m_AttribLocation; ///< attribute index
+        QT3DSU32 m_Type; ///< GL vertex format type @sa GL_FLOAT, GL_INT
+        QT3DSU32 m_NumComponents; ///< component count. max 4
+    };
+
+    ///< this class handles the shader input variables
+    class NVRenderBackendShaderInputGL
+    {
+    public:
+        ///< constructor
+        NVRenderBackendShaderInputGL(NVDataRef<NVRenderBackendShaderInputEntryGL> entries)
+            : m_ShaderInputEntries(entries)
+        {
+        }
+        ///< destructor
+        ~NVRenderBackendShaderInputGL(){}
+
+        NVRenderBackendShaderInputEntryGL *getEntryByName(CRegisteredString entryName) const
+        {
+            QT3DS_FOREACH(idx, m_ShaderInputEntries.size())
+            {
+                if (m_ShaderInputEntries[idx].m_AttribName == entryName)
+                    return &m_ShaderInputEntries.mData[idx];
+            }
+            return NULL;
+        }
+
+        Option<NVRenderBackendShaderInputEntryGL>
+        getEntryByAttribLocation(QT3DSU32 attribLocation) const
+        {
+            QT3DS_FOREACH(idx, m_ShaderInputEntries.size())
+            {
+                if (m_ShaderInputEntries[idx].m_AttribLocation == attribLocation)
+                    return m_ShaderInputEntries[idx];
+            }
+            return Empty();
+        }
+
+        NVDataRef<NVRenderBackendShaderInputEntryGL> m_ShaderInputEntries; ///< shader input entries
+    };
+
+    ///< this class represents the internals of a GL program
+    class NVRenderBackendShaderProgramGL
+    {
+    public:
+        ///< constructor
+        NVRenderBackendShaderProgramGL(QT3DSU32 programID)
+            : m_ProgramID(programID)
+            , m_shaderInput(NULL)
+        {
+        }
+
+        ///< destructor
+        ~NVRenderBackendShaderProgramGL(){}
+
+        QT3DSU32 m_ProgramID; ///< this is the OpenGL object ID
+        NVRenderBackendShaderInputGL *m_shaderInput; ///< pointer to shader input object
+    };
+}
+}
+
+#endif