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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
60QT_BEGIN_NAMESPACE
61
62class Q_QUICK_PRIVATE_EXPORT QQuickGenericShaderEffect : public QObject
63{
64 Q_OBJECT
65
66public:
67 QQuickGenericShaderEffect(QQuickShaderEffect *item, QObject *parent = nullptr);
68 ~QQuickGenericShaderEffect();
69
70 QByteArray fragmentShader() const { return m_fragShader; }
71 void setFragmentShader(const QByteArray &src);
72
73 QByteArray vertexShader() const { return m_vertShader; }
74 void setVertexShader(const QByteArray &src);
75
76 bool blending() const { return m_blending; }
77 void setBlending(bool enable);
78
79 QVariant mesh() const;
80 void setMesh(const QVariant &mesh);
81
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
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
100private 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
108private:
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 {
142 SignalMapper() : mapper(nullptr), active(false) { }
143 QObject *mapper;
144 bool active;
145 };
146 QVector<SignalMapper> m_signalMappers[NShader];
147};
148
149QT_END_NAMESPACE
150
151#endif // QQUICKGENERICSHADEREFFECT_P_H
152

source code of qtdeclarative/src/quick/items/qquickgenericshadereffect_p.h