qssglightmapio_p.h

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// Copyright (C) 2025 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only
 
#ifndef QSSGLIGHTMAPIO_H
#define QSSGLIGHTMAPIO_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 "qtquick3druntimerenderexports.h"
 
#include <QByteArray>
#include <QMap>
#include <QSharedPointer>
#include <QIODevice>
#include <QVariantMap>
 
QT_BEGIN_NAMESPACE
 
struct QSSGLoadedTexture;
struct QSSGRenderTextureFormat;
 
enum class QSSGLightmapIODataTag : quint32 {
    Unset = 0,
    Mask,
    Texture_Final,
    Texture_Direct,
    Texture_Indirect,
    Metadata,
    Mesh,
    SceneMetadata,
    // ...
    Count
};
 
struct Q_QUICK3DRUNTIMERENDER_EXPORT QSSGLightmapLoader
{
    ~QSSGLightmapLoader();
 
    static QSharedPointer<QSSGLightmapLoader> open(const QSharedPointer<QIODevice> &stream);
    static QSharedPointer<QSSGLightmapLoader> open(const QString &path);
 
    QByteArray readF32Image(const QString &key, QSSGLightmapIODataTag tag) const;
    QByteArray readU32Image(const QString &key, QSSGLightmapIODataTag tag) const;
    QByteArray readData(const QString &key, QSSGLightmapIODataTag tag) const;
    QVariantMap readMap(const QString &key, QSSGLightmapIODataTag tag) const;
 
    QList<std::pair<QString, QSSGLightmapIODataTag>> getKeys() const;
    static QSSGLoadedTexture *createTexture(QSharedPointer<QIODevice> stream, const QSSGRenderTextureFormat &format, const QString &key);
 
private:
    QSSGLightmapLoader();
    Q_DISABLE_COPY(QSSGLightmapLoader)
 
    struct QSSGLightmapIOPrivate *d = nullptr;
};
 
struct Q_QUICK3DRUNTIMERENDER_EXPORT QSSGLightmapWriter
{
    ~QSSGLightmapWriter();
 
    static QSharedPointer<QSSGLightmapWriter> open(const QSharedPointer<QIODevice> &stream);
    static QSharedPointer<QSSGLightmapWriter> open(const QString &path);
 
    bool writeF32Image(const QString &key, QSSGLightmapIODataTag tag, const QByteArray &imageFP32);
    bool writeU32Image(const QString &key, QSSGLightmapIODataTag tag, const QByteArray &imageU32);
    bool writeData(const QString &key, QSSGLightmapIODataTag tag, const QByteArray &buffer);
    bool writeMap(const QString &key, QSSGLightmapIODataTag tag, const QVariantMap &data);
 
    bool close() const;
 
private:
    Q_DISABLE_COPY(QSSGLightmapWriter)
    QSSGLightmapWriter();
 
    struct QSSGLightmapIOPrivate *d = nullptr;
};
 
QT_END_NAMESPACE
 
#endif // QSSGLIGHTMAPIO_H