LuxCoreRender Forums

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

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.

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


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

Thank you!

Velvet or glossy shader with multi bounce enable can give great result for that purpose.

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

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.

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?

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

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

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

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 :