osg qt多线程渲染代码
时间: 2023-08-31 16:09:07 浏览: 83
以下是使用OpenSceneGraph和Qt实现多线程渲染的示例代码:
```cpp
#include <QApplication>
#include <QThread>
#include <osgViewer/Viewer>
#include <osgViewer/ViewerEventHandlers>
#include <osgGA/TrackballManipulator>
#include <osgQt/GraphicsWindowQt>
#include <osg/Geode>
#include <osg/ShapeDrawable>
class RenderThread : public QThread
{
public:
RenderThread(osgQt::GraphicsWindowQt* gw) : _gw(gw) {}
protected:
virtual void run()
{
osgViewer::Viewer viewer;
viewer.addEventHandler(new osgViewer::StatsHandler);
viewer.setCameraManipulator(new osgGA::TrackballManipulator);
viewer.setSceneData(createScene());
viewer.setUpViewInWindow(50, 50, 800, 600);
viewer.realize();
while (!_gw->getQuit())
{
_gw->makeCurrent();
viewer.frame();
_gw->swapBuffers();
}
}
private:
osg::Node* createScene()
{
osg::Geode* geode = new osg::Geode;
geode->addDrawable(new osg::ShapeDrawable(new osg::Box(osg::Vec3(), 1.0)));
return geode;
}
osgQt::GraphicsWindowQt* _gw;
};
int main(int argc, char** argv)
{
QApplication app(argc, argv);
osg::ref_ptr<osgQt::GraphicsWindowQt> gw = new osgQt::GraphicsWindowQt;
RenderThread renderThread(gw.get());
renderThread.start();
gw->show();
return app.exec();
}
```
该代码创建了两个线程:主线程和渲染线程。主线程负责创建Qt窗口和渲染窗口,渲染线程负责使用OpenSceneGraph渲染场景。渲染线程中的循环不断调用osgViewer::Viewer::frame()方法渲染场景,然后将结果显示在Qt窗口中。主线程和渲染线程之间的通信通过osgQt::GraphicsWindowQt对象进行。
注意:在使用多线程渲染时,需要在渲染线程中使用makeCurrent()函数设置OpenGL上下文。如果不这样做,将会出现渲染错误。
相关推荐
![zip](https://img-home.csdnimg.cn/images/20210720083736.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![zip](https://img-home.csdnimg.cn/images/20210720083736.png)
![doc](https://img-home.csdnimg.cn/images/20210720083327.png)
![xlsx](https://img-home.csdnimg.cn/images/20210720083732.png)
![pdf](https://img-home.csdnimg.cn/images/20210720083512.png)