Qt Quick 3D - Stencil Outline Extension Example
// Copyright (C) 2023 The Qt Company Ltd. // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause #ifndef OUTLINERENDEREXTENSION_H #define OUTLINERENDEREXTENSION_H #include <QtQuick3D/qquick3drenderextensions.h> #include <QtQmlIntegration> class OutlineRenderExtension : public QQuick3DRenderExtension { Q_OBJECT Q_PROPERTY(QQuick3DObject * target READ target WRITE setTarget NOTIFY targetChanged) Q_PROPERTY(QQuick3DObject * outlineMaterial READ outlineMaterial WRITE setOutlineMaterial NOTIFY outlineMaterialChanged) Q_PROPERTY(float outlineScale READ outlineScale WRITE setOutlineScale NOTIFY outlineScaleChanged) QML_ELEMENT public: OutlineRenderExtension() = default; ~OutlineRenderExtension() override; float outlineScale() const; void setOutlineScale(float newOutlineScale); QQuick3DObject *target() const; void setTarget(QQuick3DObject *newTarget); QQuick3DObject *outlineMaterial() const; void setOutlineMaterial(QQuick3DObject *newOutlineMaterial); signals: void outlineColorChanged(); void outlineScaleChanged(); void targetChanged(); void outlineMaterialChanged(); protected: QSSGRenderGraphObject *updateSpatialNode(QSSGRenderGraphObject *node) override; private: enum Dirty : quint8 { Target = 1 << 0, OutlineMaterial = 1 << 1, OutlineScale = 1 << 2 }; using DirtyT = std::underlying_type_t<Dirty>; void markDirty(Dirty v); QPointer<QQuick3DObject> m_target; QPointer<QQuick3DObject> m_outlineMaterial; float m_outlineScale = 1.05f; DirtyT m_dirtyFlag {}; }; #endif // OUTLINERENDEREXTENSION_H