qt-everywhere-src-5.15.1/qtquick3d/src/runtimerender/graphobjects/qssgrendermaterialdirty_p.h

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#ifndef QSSG_RENDER_MATERIAL_DIRTY_H
#define QSSG_RENDER_MATERIAL_DIRTY_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/qtquick3druntimerenderglobal_p.h>

QT_BEGIN_NAMESPACE

class QSSGMaterialDirty
{
private:
    enum Flag : quint8
    {
        Dirty = 1 << 0,
        DirtyWithinFrame = 1 << 1,
        AllDirty = Dirty | DirtyWithinFrame
    };
    Flag m_dirtyFlag = AllDirty;

public:
    QSSGMaterialDirty() = default;

    void setDirty() { m_dirtyFlag = AllDirty; }
    bool isDirty() const { return (m_dirtyFlag != 0); }
    void clearDirty() { m_dirtyFlag = Flag(0); }
    void updateDirtyForFrame()
    {
        m_dirtyFlag = DirtyWithinFrame;
        clearDirty();
    }
};

QT_END_NAMESPACE

#endif // QSSG_RENDER_MATERIAL_DIRTY_H