sheen and sheen tint

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Dade
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Re: sheen and sheen tint

Post by Dade » Tue Jan 07, 2020 11:09 am

lacilaci wrote:
Tue Jan 07, 2020 10:09 am
By the way, this has to be updated in blender, right now to go beyond 1 for sheen you have to use another node (constant value, math etc...)
Since this doesn't break anything I think it's safe to have it "unlocked" for higher values straight in the disney.
@B.Y.O.B., @Neo :?:
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B.Y.O.B.
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Re: sheen and sheen tint

Post by B.Y.O.B. » Tue Jan 07, 2020 12:32 pm

I'll take care of it.

edit: Done, however you'll have to replace old Disney nodes to be able to use the extended range.

zooropa
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Re: sheen and sheen tint

Post by zooropa » Thu Sep 10, 2020 10:33 pm

Hi. I am trying to recreate the carpet in this render:
Image

Would you mind to share the node setups you used for the chair or the towels posted here?

Thank you!

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Sharlybg
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Re: sheen and sheen tint

Post by Sharlybg » Fri Sep 11, 2020 7:38 am

Velvet or glossy shader with multi bounce enable can give great result for that purpose. :idea:
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Re: sheen and sheen tint

Post by zooropa » Fri Sep 11, 2020 7:48 am

Thank you I am at work waiting to return home and try that.
Do you think in the reference I posted there is some kind of fur also? like a subtle bump or displacement...I am not sure if its kind of a short hair or not.

Also I would like to ask you about people try the disney shader to do velvet.

Thanks again

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Re: sheen and sheen tint

Post by Sharlybg » Fri Sep 11, 2020 7:53 am

zooropa wrote:
Fri Sep 11, 2020 7:48 am
Thank you I am at work waiting to return home and try that.
Do you think in the reference I posted there is some kind of fur also? like a subtle bump or displacement...I am not sure if its kind of a short hair or not.

Also I would like to ask you about people try the disney shader to do velvet.

Thanks again
No hair fur. just shading effect + small displacement to create the large bump on the carpet.
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Re: sheen and sheen tint

Post by zooropa » Fri Sep 11, 2020 1:00 pm

Thanks ! What do you mean with the " large bump "

Do you think if I add a small noise in the displacement I could fake like a really short hair?

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Sharlybg
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Re: sheen and sheen tint

Post by Sharlybg » Fri Sep 11, 2020 2:59 pm

Thanks ! What do you mean with the " large bump "
The ground isn't Flat (look like small wave on it).

Do you think if I add a small noise in the displacement I could fake like a really short hair?
You don't need that at all :mrgreen:
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TStrolia
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Re: sheen and sheen tint

Post by TStrolia » Fri Sep 11, 2020 3:19 pm

Sharlybg wrote:
Fri Sep 11, 2020 2:59 pm
Thanks ! What do you mean with the " large bump "
The ground isn't Flat (look like small wave on it).

Do you think if I add a small noise in the displacement I could fake like a really short hair?
You don't need that at all :mrgreen:
I beg to differ. I don't see a wave at all besides at a micro level. Sure maybe a mm or 2 for the base boards but based on the density and size of the carpet hairs this looks pretty thin, more like a floor covering and less like a carpet. I think what you are probably seeing is the anisotropic rotation of hairs brushed in different directions, like suede leather or velvet. This is why I am constantly asking about anisotropic rotation and how badly we need it in lux because honestly, a bump will not accurately emulate this and even in lux I have run into terminator problems driving an 8k bump map or normal map hard enough to get the anisotropy necessary for this effect that I could get almost entirely with just an anisotropic rotation input. In light of no anisotropic rotation input yet, I think the best bet here is to use a normal map of suede leather brushed in different directions, or just do it practically with a particle sim, but that will ramp up render times a lot... like... a LOT

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Re: sheen and sheen tint

Post by Sharlybg » Fri Sep 11, 2020 3:50 pm

I'm talking about bump at micro level but large scale irregularity. But you say a close look at it doesn't look like displacement or bump at all. It is more like textured surface :
carpet.jpeg
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