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diff --git a/src/shaderdebugger.h b/src/shaderdebugger.h
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+/***************************************************************************
+ *   Copyright (C) 2012 by Walter Roth                                     *
+ *                                                                         *
+ *   This program is free software; you can redistribute it and/or modify  *
+ *   it under the terms of the GNU General Public License as published by  *
+ *   the Free Software Foundation; either version 2 of the License, or     *
+ *   (at your option) any later version.                                   *
+ *                                                                         *
+ *   This program 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 General Public License for more details.                          *
+ *                                                                         *
+ *   You should have received a copy of the GNU General Public License     *
+ *   along with this program; if not, write to the                         *
+ *   Free Software Foundation, Inc.,                                       *
+ *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
+ ***************************************************************************/
+#ifndef SHADERDEBUGGER_H
+#define SHADERDEBUGGER_H
+
+#include <QtOpenGL/QGLWidget>
+#include <QMatrix3x3>
+#include <QMatrix4x4>
+
+/** \brief A simple debugging tool for uniforms passed to a shader.
+  *
+  * There is no way to get the values of variables inside a shader, therefore you have to look
+  * at the variables, before they are passed to the shader.
+  */
+class ShaderDebugger
+{
+public:
+    ShaderDebugger();
+    static void setEnabled(bool newVal){enabled = newVal;}
+    /**
+      * Works on GLES platforms only.
+      */
+    static void debugUniforms(int programId);
+    /**
+     * @brief debugMatrix4x4 Send debug output to stderr.
+     * @param m The matrix
+     * @param caption
+     */
+    static void debugMatrix4x4(const QMatrix4x4 & m, const QString & caption = "QMatrix4x4");
+    /**
+     * @brief debugMatrix3x3 Send debug output to stderr.
+     * @param m The matrix
+     * @param caption
+     */
+    static void debugMatrix3x3(const QMatrix3x3 & m, const QString & caption = "QMatrix3x3");
+    /**
+     * @brief debugVector4D Send debug output to stderr.
+     * @param m The vector
+     * @param caption
+     */
+    static void debugVector4D(const QVector4D & v, const QString & caption = "QVector4D");
+    /**
+     * @brief debugVector4D Send debug output to stderr.
+     * @param m The vector
+     * @param caption
+     */
+    static void debugVector3D(const QVector3D & v, const QString & caption = "QVector3D");
+private:
+   static bool enabled;
+};
+
+#endif // SHADERDEBUGGER_H