Texture Defined Specular Reflection in Unreal

[zhugel_007]

Hi,

Can some one explain a bit how the "Texture Defined Specular Reflection" works in Unreal? Looks like a nice trick.

here is the link:
http://udn.epicgames.com/Three/TextureDefinedSpecularReflection.html

Thanks a lot!

 

[Humus]

I don't know exactly how this works, but from the looks of it it seems to look up in a texture instead doing the regular specular math. Probably just projecting the input vectors in some way and use that as texture coordinates.

 

[zhugel_007]

Thanks Humus for the reply. I think i know how to do it