Did you mean something like this




Well thats what me and my friend think you mean, but we are not doing this approach. Our purpose is to use only the render of the models, so we just added different textures to the parts of the building.

We are not sure the textures is the primary issue because this line issue that shows only occurs when we add a lighting source.

With a lighting source the faint lines appear around the edges, and apparently its a pre-multiply issue or we keep getting told but have had no success with pre-multiply being switched off.

The lighting being used is phisycal sun and sky as light tough.