/****************************************************************************
**
** Copyright (C) 2015 The Qt Company Ltd.
** 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
** Software or, alternatively, in accordance with the terms contained in
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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
** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
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** As a special exception, The Qt Company gives you certain additional
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** $QT_END_LICENSE$
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****************************************************************************/

#ifndef QSGENGINE_H
#define QSGENGINE_H

#include <QtCore/QObject>
#include <QtQuick/qtquickglobal.h>

QT_BEGIN_NAMESPACE

class QOpenGLContext;
class QSGAbstractRenderer;
class QSGEnginePrivate;
class QSGTexture;

class Q_QUICK_EXPORT QSGEngine : public QObject
{
    Q_OBJECT
    Q_DECLARE_PRIVATE(QSGEngine)
public:
    enum CreateTextureOption {
        TextureHasAlphaChannel  = 0x0001,
        TextureOwnsGLTexture    = 0x0004,
        TextureCanUseAtlas      = 0x0008,
        TextureIsOpaque         = 0x0010
    };
    Q_DECLARE_FLAGS(CreateTextureOptions, CreateTextureOption)

    QSGEngine(QObject *parent = 0);
    ~QSGEngine();

    void initialize(QOpenGLContext *context);
    void invalidate();

    QSGAbstractRenderer *createRenderer() const;
    QSGTexture *createTextureFromImage(const QImage &image, CreateTextureOptions options = CreateTextureOption(0)) const;
    QSGTexture *createTextureFromId(uint id, const QSize &size, CreateTextureOptions options = CreateTextureOption(0)) const;
};

QT_END_NAMESPACE

#endif // QSGENGINE_H
