UE4, how to add varied roughness effects.

Donkey_Kong

I am currently making a car. I was wondering how do you add different roughness effects for ie windows, wheels, metal etc Thanks in advance.

Nightingale

Are detail normal maps what you are looking for?

EDIT: whoops, didn't see the UE4 tag when I wrote that post. I don't know anything about UE4. Disregard.

illo

a black and white texture map would do it for you, if you are unsure as to creating texture maps, check out the link at the top to the polycount wiki.

modsoft

Familiarize yourself with the PBR workflow, and how the shader interprets each map. (alb,spec,roughness,transparency,etc)

http://www.marmoset.co/toolbag/learn/pbr-practice

http://seblagarde.wordpress.com/2012/04/30/dontnod-specular-and-glossiness-chart/