/****************************************************************************
**
** Copyright (C) 2013 Klaralvdalens Datakonsult AB (KDAB).
** Contact: http://www.qt.io/licensing/
**
** This file is part of the QtQuick module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL21$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
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** information use the contact form at http://www.qt.io/contact-us.
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** 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 or version 3 as published by the Free
** Software Foundation and appearing in the file LICENSE.LGPLv21 and
** LICENSE.LGPLv3 included in the packaging of this file. Please review the
** following information to ensure the GNU Lesser General Public License
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**
** As a special exception, The Qt Company gives you certain additional
** rights. These rights are described in The Qt Company LGPL Exception
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** $QT_END_LICENSE$
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****************************************************************************/

#ifndef QSGSHADERSOURCEBUILDER_P_H
#define QSGSHADERSOURCEBUILDER_P_H

//
//  W A R N I N G
//  -------------
//
// This file is not part of the Qt API.  It exists purely as an
// implementation detail.  This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
//

#include <private/qtquickglobal_p.h>

#include <QtGui/qsurfaceformat.h>
#include <QtCore/qbytearray.h>

QT_BEGIN_NAMESPACE

class QOpenGLShaderProgram;

class Q_QUICK_PRIVATE_EXPORT QSGShaderSourceBuilder
{
public:
    QSGShaderSourceBuilder();

    static void initializeProgramFromFiles(QOpenGLShaderProgram *program,
                                           const QString &vertexShader,
                                           const QString &fragmentShader);

    QByteArray source() const;
    void clear();

    void appendSource(const QByteArray &source);
    void appendSourceFile(const QString &fileName);
    void addDefinition(const QByteArray &definition);
    void removeVersion();

protected:
    virtual QString resolveShaderPath(const QString &path) const;

private:
    QSurfaceFormat::OpenGLContextProfile contextProfile() const;

    QByteArray m_source;
};

QT_END_NAMESPACE

#endif // QSGSHADERSOURCEBUILDER_P_H