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50
51#ifndef FBITEM_H
52#define FBITEM_H
53
54#include <QQuickFramebufferObject>
55#include <QOpenGLVertexArrayObject>
56#include <QOpenGLBuffer>
57#include <QOpenGLShaderProgram>
58#include <QVector3D>
59#include "logo.h"
60
61struct StateBinder;
62
63class FbItemRenderer : public QQuickFramebufferObject::Renderer
64{
65public:
66 FbItemRenderer(bool multisample);
67 void synchronize(QQuickFramebufferObject *item) override;
68 void render() override;
69 QOpenGLFramebufferObject *createFramebufferObject(const QSize &size) override;
70
71private:
72 void ensureInit();
73 void initBuf();
74 void setupVertexAttribs();
75 void initProgram();
76 void updateDirtyUniforms();
77
78 bool m_inited;
79 bool m_multisample;
80 QMatrix4x4 m_proj;
81 QMatrix4x4 m_camera;
82 QMatrix4x4 m_baseWorld;
83 QMatrix4x4 m_world;
84 QOpenGLVertexArrayObject m_vao;
85 QOpenGLBuffer m_logoVbo;
86 Logo ;
87 QScopedPointer<QOpenGLShaderProgram> m_program;
88 int m_projMatrixLoc;
89 int m_camMatrixLoc;
90 int m_worldMatrixLoc;
91 int m_normalMatrixLoc;
92 int m_lightPosLoc;
93 QVector3D m_rotation;
94
95 enum Dirty {
96 DirtyProjection = 0x01,
97 DirtyCamera = 0x02,
98 DirtyWorld = 0x04,
99 DirtyLight = 0x08,
100 DirtyAll = 0xFF
101 };
102 int m_dirty;
103
104 friend struct StateBinder;
105};
106
107class FbItem : public QQuickFramebufferObject
108{
109 Q_OBJECT
110 Q_PROPERTY(QVector3D eye READ eye WRITE setEye)
111 Q_PROPERTY(QVector3D target READ target WRITE setTarget)
112 Q_PROPERTY(QVector3D rotation READ rotation WRITE setRotation)
113 Q_PROPERTY(bool multisample READ multisample WRITE setMultisample)
114 QML_ELEMENT
115
116public:
117 explicit FbItem(QQuickItem *parent = 0);
118
119 QQuickFramebufferObject::Renderer *createRenderer() const override;
120
121 QVector3D eye() const { return m_eye; }
122 void setEye(const QVector3D &v);
123 QVector3D target() const { return m_target; }
124 void setTarget(const QVector3D &v);
125
126 QVector3D rotation() const { return m_rotation; }
127 void setRotation(const QVector3D &v);
128
129 enum SyncState {
130 CameraNeedsSync = 0x01,
131 RotationNeedsSync = 0x02,
132 AllNeedsSync = 0xFF
133 };
134 int swapSyncState();
135
136 bool multisample() const { return m_multisample; }
137 void setMultisample(bool m) { m_multisample = m; }
138
139private:
140 QVector3D m_eye;
141 QVector3D m_target;
142 QVector3D m_rotation;
143 int m_syncState;
144 bool m_multisample;
145};
146
147#endif // FBITEM_H
148

source code of qtdeclarative/examples/quick/quickwidgets/qquickviewcomparison/fbitem.h