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/****************************************************************************
**
** Copyright (C) 2015 Klaralvdalens Datakonsult AB (KDAB).
** Copyright (C) 2017 The Qt Company Ltd.
** Contact: http://www.qt.io/licensing/
**
** This file is part of Qt 3D Studio.
**
** $QT_BEGIN_LICENSE:GPL$
** 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 The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3 or (at your option) any later version
** approved by the KDE Free Qt Foundation. The licenses are as published by
** the Free Software Foundation and appearing in the file LICENSE.GPL3
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-3.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/

#ifndef DRAGONTEXTUREIMAGE_P_H
#define DRAGONTEXTUREIMAGE_P_H

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

#include "dragonbackendnode_p.h"

#include <private/dragonimmutable_p.h>

#include <Qt3DRender/QAbstractTexture>
#include <Qt3DRender/QTextureImageDataGenerator>
#include <Qt3DRender/QTextureWrapMode>

#include <QFuture>

QT_BEGIN_NAMESPACE
namespace Qt3DRender {
namespace Dragon {

class TextureImage : public BackendNode
{
public:
    void sceneChangeEvent(const Qt3DCore::QSceneChangePtr &e) override;
    void initializeFromPeer(const Qt3DCore::QNodeCreatedChangeBasePtr &change) final;

    Qt3DCore::QNodeId parentId;
    int layer = 0;
    int mipLevel = 0;
    bool loadWithinFrame = true;
    QAbstractTexture::CubeMapFace face;
    QTextureImageDataGeneratorPtr generator;
};

inline bool operator<(const TextureImage &a, const TextureImage &b)
{
    return a.peerId() < b.peerId();
}

using TextureImageDna = int;

struct LoadedTextureImage
{
    enum Status
    {
        Loading,
        Loaded,
        Cleared
    };
    Status status = Loading;
    Immutable<TextureImage> image;
    QTextureImageDataGeneratorPtr generator;
    QFuture<QTextureImageDataPtr> future;
    QTextureImageDataPtr data;
};

bool operator ==(const LoadedTextureImage &a, const LoadedTextureImage &b);

} // namespace Dragon
} // namespace Qt3DRender
QT_END_NAMESPACE

#endif // DRAGONTEXTUREIMAGE_P_H