osg qt多线程渲染代码
时间: 2023-08-31 17:09:25 浏览: 163
以下是一个简单的osg和Qt多线程渲染的代码示例:
```cpp
class OSGWidget : public QWidget, public osgViewer::Viewer
{
public:
OSGWidget(QWidget* parent = nullptr)
: QWidget(parent)
{
// 配置OSG Viewer
this->setThreadingModel(osgViewer::Viewer::SingleThreaded);
this->setCameraManipulator(new osgGA::TrackballManipulator);
this->setSceneData(osgDB::readNodeFile("cow.osg"));
this->realize();
// 配置Qt线程
m_thread = new QThread(this);
Worker* worker = new Worker(this);
worker->moveToThread(m_thread);
connect(m_thread, &QThread::started, worker, &Worker::process);
connect(worker, &Worker::finished, m_thread, &QThread::quit);
connect(worker, &Worker::finished, worker, &Worker::deleteLater);
connect(m_thread, &QThread::finished, m_thread, &QThread::deleteLater);
connect(worker, &Worker::render, this, &OSGWidget::update);
m_thread->start();
}
private:
QThread* m_thread;
class Worker : public QObject
{
public:
Worker(OSGWidget* widget)
: m_widget(widget)
{}
public slots:
void process()
{
while (true)
{
// 渲染场景
m_widget->frame();
emit render();
// 等待一段时间,模拟工作负载
QThread::msleep(50);
}
emit finished();
}
signals:
void finished();
void render();
private:
OSGWidget* m_widget;
};
};
```
在这个例子中,`OSGWidget` 继承自 `QWidget` 和 `osgViewer::Viewer`,并在构造函数中配置了一个简单的OSG场景。`Worker` 类是一个简单的工作线程,它会循环渲染OSG场景并发出一个信号,告诉主线程更新窗口。在 `OSGWidget` 的构造函数中,我们将 `Worker` 放在一个单独的Qt线程中,并将主线程的 `update` 槽连接到 `Worker` 的 `render` 信号,以便在渲染完成后更新窗口。
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