[Max & VRay SDK] Custom shader in VRayMtl

[lechoo]

Hi,
I'm writing custom shader (derived from Shader class). Is it possible to use it in VRayMtl? Right now it is visible only in Standard material in "Shader Basic Properties".

[pixelstudio]

Hmm dunno if this is helpfull but look at the vraySDK help file for the MaterialInterface. maybe that will help you out.

[dimo]

No,
you have to use the VRay SDK and write a custom BRDF instead.

The math is the same though. Start with the samples.

Best regards,
Dieter

[vlado]

You cannot add a BRDF to VRayMtl itself; you have to code a new material (which you can combine with other materials using VRayBlendMtl). In the SDK for newer builds there is a sample code for a simple Blinn material.

Best regards,
Vlado

[lechoo]

Thanks for Your help.

Vlado: I have 1.5RC3 which is latest build AFAIK and I don't see any sample for Blinn material.

[pixelstudio]

maybe he means newer then rc3? seems people are working with it but it's nowhere to be found thing some soft of beta or sumthing.

edit : have you looked into the Chaosgroup directory when in your program files? there are a couple of samples you could have a look at.

[lechoo]

You cannot add a BRDF to VRayMtl itself; you have to code a new material

It's like hunting a fly with a cannon. Some simple support for custom shaders would be nice feature in next releases of SDK.

[vlado]

You cannot add a BRDF to VRayMtl itself; you have to code a new material

It's like hunting a fly with a cannon. Some simple support for custom shaders would be nice feature in next releases of SDK.

As far as V-Ray is concerned, there isn't much difference between coding a material, and a shader (a material IS a shader, after all). Being a 3ds Max plugin, your shader must still contain lots of code related to 3ds Max; the V-Ray portion of a material is typically 5 to 10% of all the code V-Ray at least provides you with an automatic UI generation for your plugins.

Best regards,
Vlado

[lechoo]

edit : have you looked into the Chaosgroup directory when in your program files? there are a couple of samples you could have a look at.

Yes, I have, but I haven't found example for blinn material.

[Tog]

It's for newer builds not the RC3.

If I understand correctly, we will able to adapt this exemple to create custom shaders ? It's like a skeleton.