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How do you control individual layer's roughness/specular/metallic amount in a landscape material?

I have a landscape material with grass, rock, dirt, mud, etc. Each of these should technically have separate roughness and specular values. How do you control these for each individual layer?

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asked May 16 '14 at 08:29 PM in Rendering

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same as with diffuse or normalmaps: add a copy of your layerblend node and connect a constant node to it.

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answered Jun 06 '14 at 01:36 PM

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