This probably has a really obvious answer, so I will post it in the beginners forum.
Picture a nightime simulation, with some 3D trees, not billboards. There is nearly 0 ambient light, but the user has a flashlight.
When he shines his light on the tree, and hits the leaves, some reflect back nicely. Others are very black, because they are turned over and they are facing the wrong way.
Is there a way to have the directional lighting not care about the sign of the normal?
I do care about the differences between straight on, and angled, so I don’t want everything to return as fully lit.
Thanks!
TriangleMan.