How to pick vtkLODProp3D?

Support
1

After changing from vtkActor to vtkLODProp3D,

vtkNew<vtkPropPicker> picker;
		picker->Pick(upPos[0], upPos[1], 0, this->GetCurrentRenderer());
		if (picker->GetProp3D() == nullptr && picker->GetActor() == nullptr && picker->GetViewProp() == nullptr && picker->GetAssembly() == nullptr) {
			Logger::Info("Neither Prop3D nor assembly clicked!!!");
			return;
		}

As above code,all of following methods:

GetProp3D() 
GetActor() 
GetViewProp()
GetAssembly()

will return nullptr.

Question is how to pick up a vtkLODProp3D?

2

It seems like those code:

//enable light shadow showing
vtkNew shadows;
vtkNew seq;
vtkNew passes;
passes->AddItem(shadows->GetShadowMapBakerPass());
passes->AddItem(shadows);
seq->SetPasses(passes);
vtkNew cameraP;
cameraP->SetDelegatePass(seq);
// tell the renderer to use our render pass pipeline
vtkOpenGLRenderer glrenderer = dynamic_cast<vtkOpenGLRenderer>(renderer.GetPointer());
glrenderer->SetPass(cameraP);

Caused this problem