Change values in Materials?

So at the moment I add a bump, or spec map and it’s one static value. I know you can change it within the material editor I just don’t know how.

Any help would be appreciated, thanks. (To expand, I mean that Instead of roughness being at 1 and being extremely reflective, i’d like to reduce it to like 0.2)

Just use a constant node to reduce the roughness.

lower value at roughness = more reflective :wink:

Make it a Parameter and give it a name. Then you can create Material Instances and change them in realtime. :cool: