So, yesterday we were discussing various lighting approaches at local IRC chat, and someone said that it was impossible to make a ps.2.0 single-pass lighting shader for 8 lights with diffuse, specular and attenuation, of course with normal map. Well, I told him he was actually wrong, and that I can prove it. Proving it turned out to be a very fun and challenging task. I am going to share the resulting shader and the lessons learned with you.
