How to use Roughness map with layerblend ?

Lookia_Ursiana
Sun, 31 May 2020 13:21:57 +0000
Rendering

Hi everyone, I’m not totally new to UE4 but I’m not familiar with the forums and the answer hub yet. Tried to find answer but I couldn’t so I apologise if this problem have an answer somewhere.

Here’s my problem :

I’m creating a terrain material in order to paint with it on a landscape using a layerblend and 5 different textures. What I did is that i plugged all albedos into a layerblend with 1 layer for each texture and plugged it in the base color and did the same for the normal map. My materials have been created with Quixel Mixer using the megascans and so when I exported them into UE4, I had more than just albedos and normal but also have AO Maps, Roughness, Metalness, Specular and so on.

The thing is, when I apply one of my material which as puddles in it directly on a mesh I can see the roughness of the water puddles. But when I apply the layer coming from the same material from my terrain material, the roughness doesn’t show up the same way. So I tried to use a layerblend to plug all the roughness maps i got with my material to get more info from it just like i would apply the material itself but when i try to do so my texture layers go black or just a few of them compile…

My question is : Can you use the same system as layer blend for albedos and normal (which works perfectly fine) to get all the rest of the info such as Roughness, Metalness, AO and specular and how ?

Thank you very much !

10 posts - 1 participant