depth bias.....? anyway to make the lower part of meshes dirty.

Development Rendering
1

Hey,

Is there a way in the materials to make a dirt layer fade in near where 2 meshes intersect?
I know in UDK there was a depth bias node that possibly did something similar.
I can’t think of any examples I’ve seen of this in UE4.
anyone know of any? or if there id a way of achieving this?

any help will be greatly appreciated.

cheers

2

I agree, this would be very useful. I wonder if it could somehow be accomplished with distance fields?

3

There is a way in 4.9 to do this, using as mentioned above, the new Distance to Nearest Surface node.

I will post an example soon.

4

The depth bias node is still in UE4 so you could set this type of behavior up if you wanted to.

5

Depth bias is called DepthFade in UE4 but it can only be used with translucent materials. Other than Distance to Nearest Surface node in 4.9 there is a new feature, PrecomputedAOMask, that enables you to use lightmass AO as a mask. More info here: Engine Features Preview 7/16/2015 - Announcements and Releases - Unreal Engine Forums