vtkm::cont::testing::MakeTestDataSet maker;
    vtkm::cont::DataSet ds = maker.Make3DUniformDataSet0();

    vtkm::rendering::Color bg(0.2f, 0.2f, 0.2f, 1.0f);
    vtkm::rendering::CanvasGL canvas;
    vtkm::rendering::MapperGL mapper;

    vtkm::rendering::Scene scene;
    scene.AddActor(vtkm::rendering::Actor(ds.GetCellSet(),
                                          ds.GetCoordinateSystem(),
                                          ds.GetField("pointvar")));

    //Create vtkm rendering stuff.
    view = new vtkm::rendering::View3D(scene, mapper, canvas, bg);
    view->Initialize();