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+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the demonstration applications of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** 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, Nokia gives you certain
+** additional rights. These rights are described in the Nokia Qt LGPL
+** Exception version 1.0, 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.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef GLSHADERS_H
+#define GLSHADERS_H
+
+//#include <GL/glew.h>
+#include "glextensions.h"
+
+#include <QtGui>
+#include <QtOpenGL>
+
+#include "vector.h"
+
+class GLShader
+{
+public:
+    friend class GLProgram;
+    virtual ~GLShader();
+    bool failed() const {return m_failed;}
+    QString log();
+protected:
+    GLShader(const char *data, int size, GLenum shaderType);
+    GLShader(const QString& fileName, GLenum shaderType);
+
+    GLhandleARB m_shader;
+    bool m_compileError;
+    bool m_failed;
+};
+
+class GLVertexShader : public GLShader
+{
+public:
+    GLVertexShader(const char *data, int size);
+    GLVertexShader(const QString& fileName);
+};
+
+class GLFragmentShader : public GLShader
+{
+public:
+    GLFragmentShader(const char *data, int size);
+    GLFragmentShader(const QString& fileName);
+};
+
+class GLProgram
+{
+public:
+    GLProgram();
+    ~GLProgram();
+    void attach(const GLShader &shader);
+    void detach(const GLShader &shader);
+    void bind();
+    void unbind();
+    bool failed();
+    QString log();
+    bool hasParameter(const QString& name);
+    // use program before setting values
+    void setInt(const QString& name, int value);
+    void setFloat(const QString& name, float value);
+    void setColor(const QString& name, QRgb value);
+    void setMatrix(const QString& name, const gfx::Matrix4x4f &mat);
+    // TODO: add a bunch of set-functions for different types.
+private:
+    GLhandleARB m_program;
+    bool m_linked;
+    bool m_linkError;
+    bool m_failed;
+};
+
+#endif