What I would like to do: Take an image with a transparent background and use it as a material  so that on a mesh you only see the foreground on a face and so when you look through a face you also see the foreground image on a back face. You can see the sort of effect I wish for below. At the moment not concerned about orientation just transparency.   When I try it in  a playground  http://www.babylonjs-playground.com/#YDO1F#4 the transparency is lost. Is there a way I should