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diff --git a/src/core/render/backend/drawable.h b/src/core/render/backend/drawable.h
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+/****************************************************************************
+**
+** Copyright (C) 2014 Klaralvdalens Datakonsult AB (KDAB).
+** Contact: http://www.qt-project.org/legal
+**
+** This file is part of the Qt3D module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** 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 Digia.  For licensing terms and
+** conditions see http://qt.digia.com/licensing.  For further information
+** use the contact form at http://qt.digia.com/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Digia gives you certain additional
+** rights.  These rights are described in the Digia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QT3D_DRAWABLE_H
+#define QT3D_DRAWABLE_H
+
+#include <QObject>
+
+#include <axisalignedboundingbox.h>
+
+namespace Qt3D {
+
+class QGraphicsContext;
+class RenderShader;
+class DrawStateSet;
+
+class Drawable
+{
+public:
+    Drawable();
+
+    virtual ~Drawable();
+
+   // RenderNode* node() const;
+
+    /**
+    * @brief make OpenGL drawing commands for this drawable.
+    *
+    * The correct context and shader will already be defined,
+    * along with the transformation state. This method will
+    * be run from the rendering thread, and hence should take
+    * care if using mutable buffer data.
+    *
+    */
+    virtual void sendDrawingCommands( QGraphicsContext* gc ) = 0;
+
+    /**
+     * @brief shader
+     * @return
+     */
+    virtual RenderShader* shader() = 0;
+
+
+    virtual DrawStateSet* stateSet();
+
+    /**
+     * @brief Called by render thread to initialize resources
+     *
+     * This will be called in the context of the renderer thread
+     * once it has a fully created OpenGL context. The shader program for
+     * this drawable will be active (so attribute data can be bound)
+     */
+    virtual void initializeGL(QGraphicsContext* dc);
+
+    virtual void releaseGL();
+
+    virtual AxisAlignedBoundingBox boundingBox() const = 0;
+
+protected:
+
+};
+
+}
+
+#endif // of QT3D_DRAWABLE_H