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39 
40 #ifndef QQUICKGENERICSHADEREFFECT_P_H
41 #define QQUICKGENERICSHADEREFFECT_P_H
42 
43 //
44 //  W A R N I N G
45 //  -------------
46 //
47 // This file is not part of the Qt API.  It exists purely as an
48 // implementation detail.  This header file may change from version to
49 // version without notice, or even be removed.
50 //
51 // We mean it.
52 //
53 
54 #include <QtQuick/qquickitem.h>
55 #include <private/qtquickglobal_p.h>
56 #include <private/qsgadaptationlayer_p.h>
57 #include "qquickshadereffect_p.h"
58 #include "qquickshadereffectmesh_p.h"
59 
60 QT_BEGIN_NAMESPACE
61 
62 class Q_QUICK_PRIVATE_EXPORT QQuickGenericShaderEffect : public QObject
63 {
64     Q_OBJECT
65 
66 public:
67     QQuickGenericShaderEffect(QQuickShaderEffect *item, QObject *parent = nullptr);
68     ~QQuickGenericShaderEffect();
69 
fragmentShader()70     QByteArray fragmentShader() const { return m_fragShader; }
71     void setFragmentShader(const QByteArray &src);
72 
vertexShader()73     QByteArray vertexShader() const { return m_vertShader; }
74     void setVertexShader(const QByteArray &src);
75 
blending()76     bool blending() const { return m_blending; }
77     void setBlending(bool enable);
78 
79     QVariant mesh() const;
80     void setMesh(const QVariant &mesh);
81 
cullMode()82     QQuickShaderEffect::CullMode cullMode() const { return m_cullMode; }
83     void setCullMode(QQuickShaderEffect::CullMode face);
84 
85     QString log() const;
86     QQuickShaderEffect::Status status() const;
87 
supportsAtlasTextures()88     bool supportsAtlasTextures() const { return m_supportsAtlasTextures; }
89     void setSupportsAtlasTextures(bool supports);
90 
91     QString parseLog();
92 
93     void handleEvent(QEvent *);
94     void handleGeometryChanged(const QRectF &newGeometry, const QRectF &oldGeometry);
95     QSGNode *handleUpdatePaintNode(QSGNode *, QQuickItem::UpdatePaintNodeData *);
96     void handleComponentComplete();
97     void handleItemChange(QQuickItem::ItemChange change, const QQuickItem::ItemChangeData &value);
98     void maybeUpdateShaders();
99 
100 private slots:
101     void propertyChanged(int mappedId);
102     void sourceDestroyed(QObject *object);
103     void markGeometryDirtyAndUpdate();
104     void markGeometryDirtyAndUpdateIfSupportsAtlas();
105     void shaderCodePrepared(bool ok, QSGGuiThreadShaderEffectManager::ShaderInfo::Type typeHint,
106                             const QByteArray &src, QSGGuiThreadShaderEffectManager::ShaderInfo *result);
107 
108 private:
109     QSGGuiThreadShaderEffectManager *shaderEffectManager() const;
110 
111     enum Shader {
112         Vertex,
113         Fragment,
114 
115         NShader
116     };
117     bool updateShader(Shader shaderType, const QByteArray &src);
118     void updateShaderVars(Shader shaderType);
119     void disconnectSignals(Shader shaderType);
120     bool sourceIsUnique(QQuickItem *source, Shader typeToSkip, int indexToSkip) const;
121 
122     QQuickShaderEffect *m_item;
123     QSize m_meshResolution;
124     QQuickShaderEffectMesh *m_mesh;
125     QQuickGridMesh m_defaultMesh;
126     QQuickShaderEffect::CullMode m_cullMode;
127     bool m_blending;
128     bool m_supportsAtlasTextures;
129     mutable QSGGuiThreadShaderEffectManager *m_mgr;
130     QByteArray m_fragShader;
131     bool m_fragNeedsUpdate;
132     QByteArray m_vertShader;
133     bool m_vertNeedsUpdate;
134 
135     QSGShaderEffectNode::ShaderData m_shaders[NShader];
136     QSGShaderEffectNode::DirtyShaderFlags m_dirty;
137     QSet<int> m_dirtyConstants[NShader];
138     QSet<int> m_dirtyTextures[NShader];
139     QSGGuiThreadShaderEffectManager::ShaderInfo *m_inProgress[NShader];
140 
141     struct SignalMapper {
SignalMapperSignalMapper142         SignalMapper() : mapper(nullptr), active(false) { }
143         QObject *mapper;
144         bool active;
145     };
146     QVector<SignalMapper> m_signalMappers[NShader];
147 };
148 
149 QT_END_NAMESPACE
150 
151 #endif // QQUICKGENERICSHADEREFFECT_P_H
152