valves papers at the time mentioned using a view dependent term for the lightwarp texture too (Barla06), as well as hue-shifting the lightwarp based on the albedo. i made a 3d lightwarp texture that does both of these and holy moly #godot #tf2
krokodyl.github.io/post/2025/02...
krokodyl.github.io/post/2025/02...