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40 
41 #ifndef QT3DRENDER_RENDER_TECHNIQUE_H
42 #define QT3DRENDER_RENDER_TECHNIQUE_H
43 
44 //
45 //  W A R N I N G
46 //  -------------
47 //
48 // This file is not part of the Qt API.  It exists for the convenience
49 // of other Qt classes.  This header file may change from version to
50 // version without notice, or even be removed.
51 //
52 // We mean it.
53 //
54 
55 #include <Qt3DRender/private/backendnode_p.h>
56 #include <Qt3DRender/private/parameterpack_p.h>
57 #include <Qt3DRender/private/qgraphicsapifilter_p.h>
58 #include <Qt3DRender/qfilterkey.h>
59 #include <QVector>
60 #include <QStringList>
61 
62 QT_BEGIN_NAMESPACE
63 
64 namespace Qt3DRender {
65 
66 class QTechnique;
67 class QParameter;
68 class QGraphicsApiFilter;
69 class QFilterKey;
70 class QRenderPass;
71 
72 namespace Render {
73 
74 class TechniqueManager;
75 
76 class Q_3DRENDERSHARED_PRIVATE_EXPORT Technique : public BackendNode
77 {
78 public:
79     Technique();
80     ~Technique();
81     void cleanup();
82 
83     void syncFromFrontEnd(const Qt3DCore::QNode *frontEnd, bool firstTime) override;
84 
85     QVector<Qt3DCore::QNodeId> parameters() const;
86 
87     void appendRenderPass(Qt3DCore::QNodeId renderPassId);
88     void removeRenderPass(Qt3DCore::QNodeId renderPassId);
89 
90     void appendFilterKey(Qt3DCore::QNodeId criterionId);
91     void removeFilterKey(Qt3DCore::QNodeId criterionId);
92 
93     QVector<Qt3DCore::QNodeId> filterKeys() const;
94     QVector<Qt3DCore::QNodeId> renderPasses() const;
95     const GraphicsApiFilterData *graphicsApiFilter() const;
96 
97     bool isCompatibleWithRenderer() const;
98     void setCompatibleWithRenderer(bool compatible);
99 
100     bool isCompatibleWithFilters(const Qt3DCore::QNodeIdVector &filterKeyIds);
101 
102     void setNodeManager(NodeManagers *nodeManager);
103     NodeManagers *nodeManager() const;
104 
105 private:
106 
107     GraphicsApiFilterData m_graphicsApiFilterData;
108     ParameterPack m_parameterPack;
109     QVector<Qt3DCore::QNodeId> m_filterKeyList;
110     QVector<Qt3DCore::QNodeId> m_renderPasses;
111     bool m_isCompatibleWithRenderer;
112     NodeManagers *m_nodeManager;
113 };
114 
115 class TechniqueFunctor : public Qt3DCore::QBackendNodeMapper
116 {
117 public:
118     explicit TechniqueFunctor(AbstractRenderer *renderer, NodeManagers *manager);
119     Qt3DCore::QBackendNode *create(const Qt3DCore::QNodeCreatedChangeBasePtr &change) const override;
120     Qt3DCore::QBackendNode *get(Qt3DCore::QNodeId id) const override;
121     void destroy(Qt3DCore::QNodeId id) const override;
122 private:
123     NodeManagers *m_manager;
124     AbstractRenderer *m_renderer;
125 };
126 
127 } // namespace Render
128 } // namespace Qt3DRender
129 
130 QT_END_NAMESPACE
131 
132 #endif // QT3DRENDER_RENDER_TECHNIQUE_H
133