microroughness control

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lacilaci
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microroughness control

Post by lacilaci »

can we add microroughness controls for materials? Maybe as a part of upcoming principled shader?
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Egert_Kanep
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Re: microroughness control

Post by Egert_Kanep »

What is the purpose of micro roughness? How is it different from current roughness
kintuX
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Re: microroughness control

Post by kintuX »

Yes microroughness is present.
But if you know of a better solution please, suggest, advise...

I'm still looking for best shader model, one that would be worth of implementing successfully (for starters, more efficient with specularity - producing less noise & less energy loss).
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lacilaci
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Re: microroughness control

Post by lacilaci »

So, for example in fstorm you have this "angle affect" parameter in material that allows to controll roughness at grazing angles. There is similar feature in thea render and it can be somewhat emulates with nodes for cycles.
stefdln
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Re: microroughness control

Post by stefdln »

Isn't it called "sheen" in Disney's principled shader? Otherwise I don't get what you're after
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Mango3
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Re: microroughness control

Post by Mango3 »

A surface with micro-roughness has several reflection contributions, sheen is an additional specular component at grazing angles to model e.g. light interacting with cloth fibers. Retro-reflection and diffuse components are the other ones. Disney's Principled Shader implements them.
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lacilaci
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Re: microroughness control

Post by lacilaci »

here's basicaly what I'm looking for: https://blenderartists.org/t/micro-angl ... 691900/340

I know this feature is present in fstorm material. It's a nice fancy effect that helps boost realism in some materials.
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