GGX Shader

[Fredrik Averpil]

Hi, I recently read about the GGX shader:
http://lesterbanks.com/2014/01/v-ray...linn-or-phong/

Are there any plans to bundle this type of shader with V-Ray?
It would be very interesting to have this type of shader built-in.

[AndresAhumada]

YHeaaa its fantastic!

[vlado]

Yes, we'll get to that...

Best regards,
Vlado

[stevesideas]

Funnily enough, after listening to GW's 2nd tutorial I did a search for this too. Looks fantastic! Vlado, do you think this will be implemented fairly early on for Vray 3 ?

[AndresAhumada]

Yeeeiiiii , Iplement PLZ!

[vlado]

Funnily enough, after listening to GW's 2nd tutorial I did a search for this too. Looks fantastic! Vlado, do you think this will be implemented fairly early on for Vray 3 ?

Yes, it's toward the top of the list...

Best regards,
Vlado

[Fredrik Averpil]

That indeed is great news!

I really, really appreciate the complexity of this, but it would be so useful to have this as an Brdf option in the VRayMtl shader (alongside Blinn, Phong, Ward) rather than a V-Ray plug-in, meaning complete support for all the usual suspects in the VRayMtl shader so that we won't end up with a "crippled" shader which does not support the same attributes found in the VRayMtl or a "hidden" shader with very hard-to-understand attributes.

I don't know if this is at all achievable, but I figured I'd just throw it in there.

I also must say, midst all these feature/enhancement requests, that you and your developers are doing such an unmatched feat with developing V-Ray and turning around user feedback into usable features. Keep up the amazing work you do!

[vlado]

I really, really appreciate the complexity of this, but it would be so useful to have this as an Brdf option in the VRayMtl shader (alongside Blinn, Phong, Ward) rather than a V-Ray plug-in

Exactly what I'm planning to do, yes.

Thank you for the kind words!

Best regards,
Vlado

[Fredrik Averpil]

Wonderful!

[Fredrik Averpil]

I noticed that you can create a GGX shader with Maya/V-Ray 3 if you go through this route: create -> vray -> create from vray plugin -> BRDF material

So... may I ask why this isn't available in the regular VrayMtl node?

[vlado]

So... may I ask why this isn't available in the regular VrayMtl node?

It is, in the latest nightlies and the upcoming beta.

Best regards,
Vlado

[Fredrik Averpil]

Oh, that's absolutely awesome!

[snivlem]

We're usually told that Ward = best for metals while basically everything else should be really blinn.

Is this GGX method a one size fits all?

[Fredrik Averpil]

I'm no expert in this area but I would say ggx works really well for metals and sometimes other highly reflective materials.

Some examples: http://www.shlyaev.com/rnd/37-cpp-category/54-ggx

[vlado]

Is this GGX method a one size fits all?

It's a bit unlikely. It is good for metals, but you wouldn't use it for skin, for example.

Best regards,
Vlado