Indicates whether this detail prototype uses the Mesh object from the GameObject specified by prototype.
If renderMode is DetailRenderMode.Grass, you can set this value to either true or false. However, if renderMode is DetailRenderMode.GrassBillboard, you must set this value to false. And if renderMode is DetailRenderMode.VertexLit, you must set this value to true. Otherwise, this detail prototype won't render.