Vertex blend material using a height map

VonKoz

Hey everyone UE4 noob question here. How do I set up a vertex blend material to use a height map to blend between the two textures?

I've searched all over the UE4 wiki, you tube, and just google search in general and can't seem to find a straight answer.

This is what my current material set up looks like



and the height map I want to use so my moss blends between the brick cracks.



Thanks in advance!

m4dcow

if you want between the cracks you would invert the height map, multiply it over the vertex color (best to use a single channel you have the combined RGB plugged into your lerps now) and then use a power node to harden the edges, and clamp (I think) and use that as your lerp.

VonKoz

Hmm I'm not sure I follow what you mean by "multiply it over the vertex color"

Like I said I'm pretty new to Unreal Engine 4

m4dcow

By that I mean use a multiply node, ie: the darker parts would be occluded and then a power node would be used like a levels adjustment in photoshop so the lerp mask won't be blurry.

This video demonstrates the concept in UDK
http://eat3d.com/free/vertex_painting

VonKoz

Ah ok! I think I get it now! Thank you!