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How to use multiple texture in material based on custom data

Hello

I generate a custom random world with RuntimeMeshComponent. This part work great. Now, i need to apply a material on that world, but my knowledge of material is limited.

I need, if possible, to handle multiple texture (represent differents biomes) in a material, and, apply texture based on custom data, passed to material (maybe via Vertex channel color). For now, i just get a random value stored in vertex green channel, but i dont know how to use that in material.

With VertexColor node,i take my green channel value, and i can lerp between two texture, but nothing more... So, by the way, Lerp Alpha is only 0-1 parameter. So, i guess it's wrong way for my need. Maybe use other parameter node...

I just need to apply the texture once (the world is static after generation). I want to handle something 6 or 7 differents textures if it's possible.

Can you, pleasen give me the way to accomplish that, or explain the logic ? Maybe with little example ?

Thank you by advance

Product Version: UE 4.21
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asked Feb 08 '19 at 07:13 PM in Rendering

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BigBadWouf
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avatar image BigBadWouf Feb 12 '19 at 03:26 AM

Nobody can tell me the way to do that ?

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