How to create white fur using hairmtl next

[Paul Oblomov]

I'm totally lost here. It always look all shade of grey, no matter what light is used etc.
Can somebody share example scene ? I find it is just impossible at all.

[Svetlozar Draganov]

What material settings you are using and also what's the color behind the hair and the color being reflected by hair?
Here is a sample scene with White Shiny preset with a bit of tweaks and Domelight:

Scene: https://drive.google.com/a/chaosgrou...ew?usp=sharing

[Paul Oblomov]

And the hair is looking white, right ?

[Svetlozar Draganov]

Much whiter than in your examples actually

[Paul Oblomov]

Well, we figured out, that thers not much we can do. Only 50bounces and enabled caustics

[Svetlozar Draganov]

It seems you are correct, I can't make the material fully white. Higher values I could get are around 0.9, changing lighting or exposure helps to some extend but doesn't affect the entire hair, some areas are affected too much while others doesn't change much.

[Svetlozar Draganov]

It's a bit outdated thread but today I was lucky to catch our HairMtl developer and to play a bit with the two hair-materials in V-Ray, the regular VRayHairMtl and its successor VRayHairNextMtl.
It turns out there is a way to make both them whiter than the examples above. VRayHairMtl has multiplier parameter which can force the material to become even more brighter and for VRayHairNextMtl it's necessary to set the Melanin to 0 and to increase the bounces in the scene. Here is a sample render and the scene:


https://drive.google.com/a/chaosgrou...ew?usp=sharing

Let me know if you have any questions.

[Paul Oblomov]

But hair new material starts to look very refractive, no ?

P.S. VFB OCIO acescg->rec709 = not working, but rec709simD60 works The only profile me is using stopped working. Amazing

[dgruwier]

It does look very refractive, just like the real thing

[fixeighted]

Wow...great image - never considered it would be like this. And 10 minutes of research reveals an index of 1.55. I am enlightened

[dgruwier]

The transparency is less obvious on darker hair, that image is of grey/white hairs. White hair is literally just hair that more transparent than darker hairs because of the lack of melanin. If you want to learn more, you can read this paper which the VRayHairNextMtl is based on

[Paul Oblomov]

Well, the only problem was that you have to enable reflective caustics as well and play with glossy.