Is it possible to create a rendered 3d view with a transparent toposurface? I am trying to create an image that shows a building on a hill side that shows the topo/grade and the retaining walls, grade beams and drilled piers under the surface? I can export to an Image and get transparency of the toposurface, but it is not rendered. Should this be in General rendering forum? Also, I am have some crashes with High quality renders, should I post that in some other forum, like hardware?