I am manually importing a material with PBR metallic and roughness channels and it comes out to the maximum setting. I don’t know how to create a slider to control the amount of roughness or metal. Redshift has something called a ramp node that basically gives you slide controls. Is there anything in Unreal I can use to give me a roughness slider or changable number value. And please know, I’m a film maker not a game dev very new to graphs and nodes in unreal.
Hi AndyKarta,
What you’ll be wanting is called a “Material Instance”. It’s basically a wrapper for the Material that gives you the ability to change values.
There is this document on it below, it actually has an example of make the roughness changable:
Okay, I’m 90 percent there. Thanks. Can I bother you with one more thing. I’m only seeing parameters that plug right into the roughness channel. I have a roughness texture and I don’t know how to add both a param node AND the texture plugged into the Main Material Node.
You’re welcome. To do that, probably the simplest thing would be to use that parameter as a value to multiply with the roughness texture.
If you click in the roughness texture output pin and drag out, a menu will open, type ‘*’ for multiply and select the multiply node. Then you can drag the parameter output pin into the second value for the multiply. The output of the multiply can then be dragged into the roughness:
I can’t believe you made me a graph. Thank you very much.
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