Nightly Build Hairshader #3

[t.petrov]

create from vray-plugin->Shader->Hair
create mayaHair and add vray attribute HairShader to the hairSystemShape
connect the created BRDFHair to the HairShader Attribute
play with it =)

There is an even easier way:
1. Select the hairSystemShape node in the Attribute editor
2. Attributes -> V-Ray -> Hair shader
3. Goto the Extra V-Ray Attributes and click the checker icon
4. Then select the V-Ray Mtl Hair 3

[flat]

In order to accelerate self shadowing of Hair, VRayShadowMap is recommended,
but is VRayShadowMap implemented in VRayMaya?

[vlado]

In order to accelerate self shadowing of Hair, VRayShadowMap is recommended,
but is VRayShadowMap implemented in VRayMaya?

For the moment - no.

Best regards,
Vlado

[bazuka]

vlado, btw did u maybe got my email? about the falloff think i asked?

cheers

[leow]

Thank you for the new hair shaders!

Apart from the shadowmap are there any recommended work flows for rendering hair?

I have read that some people have had success using photon mapping, but I wonder if there is any specific optimizations made in the hair shader that we can use to reduce flicker and rendering time.

Best,
Leo

[vlado]

vlado, btw did u maybe got my email? about the falloff think i asked?

Yes, but I did not quite follow how to wire the nodes together? Can you maybe send me a scene?

Best regards,
Vlado

[vlado]

I have read that some people have had success using photon mapping, but I wonder if there is any specific optimizations made in the hair shader that we can use to reduce flicker and rendering time.

Unfortunately interpolated GI solutions tend not to work too well because the fine details in the hair add a lot of flickering. It might be better to use brute force + light cache + light cache retrace. It was not that slow in my tests.

Best regards,
Vlado

[leow]

Thank you for the quick answer Vlado.

Regards,
Leo

[bernhard]

"
create mayaHair and add vray attribute HairShader to the hairSystemShape
connect the created BRDFHair to the HairShader Attribute"


How do you connect the nodes in order to add vrayHair to the hair system ?

[vlado]

There is just the VRayHair3 material, which you can connect to an existing Maya Hair shape.

Best regards,
Vlado