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39
40#ifndef CUSTOM_PARTICLE_H
41#define CUSTOM_PARTICLE_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#include "qquickparticlepainter_p.h"
54#include <private/qquickopenglshadereffectnode_p.h>
55#include <private/qquickopenglshadereffect_p.h>
56
57QT_BEGIN_NAMESPACE
58
59class QSGNode;
60struct PlainVertices;
61
62class QQuickShaderEffectMaterialObject;
63
64//Genealogy: Hybrid of UltraParticle and ShaderEffect
65class QQuickCustomParticle : public QQuickParticlePainter
66{
67 Q_OBJECT
68 Q_PROPERTY(QByteArray fragmentShader READ fragmentShader WRITE setFragmentShader NOTIFY fragmentShaderChanged)
69 Q_PROPERTY(QByteArray vertexShader READ vertexShader WRITE setVertexShader NOTIFY vertexShaderChanged)
70 QML_NAMED_ELEMENT(CustomParticle)
71
72public:
73 explicit QQuickCustomParticle(QQuickItem* parent=0);
74 ~QQuickCustomParticle();
75
76 QByteArray fragmentShader() const { return m_common.source.sourceCode[Key::FragmentShader]; }
77 void setFragmentShader(const QByteArray &code);
78
79 QByteArray vertexShader() const { return m_common.source.sourceCode[Key::VertexShader]; }
80 void setVertexShader(const QByteArray &code);
81
82Q_SIGNALS:
83 void fragmentShaderChanged();
84 void vertexShaderChanged();
85
86protected:
87 void initialize(int gIdx, int pIdx) override;
88 void commit(int gIdx, int pIdx) override;
89
90 QSGNode *updatePaintNode(QSGNode *, UpdatePaintNodeData *) override;
91 QQuickOpenGLShaderEffectNode *prepareNextFrame(QQuickOpenGLShaderEffectNode *rootNode);
92 void reset() override;
93 void resize(int oldCount, int newCount);
94 void componentComplete() override;
95 QQuickOpenGLShaderEffectNode *buildCustomNodes();
96
97 void sceneGraphInvalidated() override;
98 void itemChange(ItemChange change, const ItemChangeData &value) override;
99
100private Q_SLOTS:
101 void sourceDestroyed(QObject *object);
102
103private:
104 void propertyChanged(int mappedId);
105
106 typedef QQuickOpenGLShaderEffectMaterialKey Key;
107 typedef QQuickOpenGLShaderEffectMaterial::UniformData UniformData;
108
109 void buildData(QQuickOpenGLShaderEffectNode *rootNode);
110 void updateVertexShader();
111
112 QQuickOpenGLShaderEffectCommon m_common;
113 const QMetaObject *m_myMetaObject;
114
115 QHash<int, QQuickOpenGLShaderEffectNode*> m_nodes;
116 qreal m_lastTime;
117
118 uint m_dirtyUniforms : 1;
119 uint m_dirtyUniformValues : 1;
120 uint m_dirtyTextureProviders : 1;
121 uint m_dirtyProgram : 1;
122};
123
124QT_END_NAMESPACE
125
126#endif //HEADER_GUARD
127

source code of qtdeclarative/src/particles/qquickcustomparticle_p.h