In `imstkVTKMeshReader`, in `convertVtkPolyDataToSurfaceMesh(vtkPolyData* mesh)`, the number of triangles read is incorrect. Also, the normals appear to be incorrect in the resulting Surface Mesh. I tried the third shrub here (others didn't work as well): http://opengameart.org/content/tropical-shrubs If you go into that convert function, you'll see that the number of triangles is way off from the number in the file. @alexis-girault