qssgrenderroot_p.h

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// Copyright (C) 2025 The Qt Company Ltd.

// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only

// Qt-Security score:significant reason:default

#ifndef QSSGRENDERROOT_P_H

#define QSSGRENDERROOT_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 <QtQuick3DRuntimeRender/private/qssgrendernode_p.h>

#include <QtGui/qmatrix4x4.h>

#include <memory>

QT_BEGIN_NAMESPACE

class QSSGGlobalRenderNodeData;

class Q_QUICK3DRUNTIMERENDER_EXPORT QSSGRenderRoot final : public QSSGRenderNode

public:

    QSSGRenderRoot();

    ~QSSGRenderRoot();

    using VersionType = QSSGRenderNodeVersionType;

    enum class DirtyFlag : quint8

        TreeDirty = 0x1

};

    using FlagT = std::underlying_type_t<DirtyFlag>;

    static constexpr DirtyFlag DirtyMask { std::numeric_limits<FlagT>::max() };

    [[nodiscard]] bool isDirty(DirtyFlag dirtyFlag = DirtyMask) const

        return ((m_rootDirtyFlags & FlagT(dirtyFlag)) != 0)

        || ((dirtyFlag == DirtyMask) && QSSGRenderNode::isDirty());

    void markDirty(DirtyFlag dirtyFlag);

    void clearDirty(DirtyFlag dirtyFlag);

    [[nodiscard]] const std::shared_ptr<QSSGGlobalRenderNodeData> &globalNodeData() const

        return m_gnd;

    // This is the starting point when indexing the nodes.

    // By default it is 0, which means the first version when

    // indexing will be 1. The start version can be set to a

    // different value when needed. For example we'll set this

    // to the last version of the layer node when the window

    // changes, as that avoids accidentally re-using the same

    // version when re-indexing the layer node, as that can cause

    // issues.

    void setStartVersion(VersionType startVersion)

        m_startVersion = startVersion;

    [[nodiscard]] VersionType startVersion() const

        return m_startVersion;

    [[nodiscard]] static QSSGRenderRoot *get(QSSGRenderRoot **ref)

        return (ref && *ref) ? *ref : nullptr;

    void reindex();

private:

    QSSGRenderRoot *self = this;

    VersionType m_startVersion = 0;

    std::shared_ptr<QSSGGlobalRenderNodeData> m_gnd;

    FlagT m_rootDirtyFlags = FlagT(DirtyFlag::TreeDirty);

};

QT_END_NAMESPACE

#endif // QSSGRENDERROOT_P_H