Support for nodal shading?

[1funk]

I noticed that shading using nodes doesnt seem to work well right now. eg. If you add a vray material diffuse color channel to schematic, then plug an image into it (image node texture color to vray mat diffuse color), it renders black.

In other cases it works. eg. I can plug a "color HSV" into the vray diffuse color and it works fine

[vlado]

The nodes appeared a bit too late when we had already done a lot of work on V-Ray for Modo, so there was no time to look into supporting them. It will happen for sure, just a bit later.

Best regards,
Vlado

[vladimir.nedev]

It seems to work when the nodal network is not doing any per-sample calculations.
In this case V-Ray will get a constant value for the whole surface at the end of the nodal network. This value is computed by modo.
Yes, support is planned for proper export.

Greetings,
Vladimir Nedev

[vladimir.nedev]

Hi,

the latest nightly build for V-Ray for MODO(the one from 2014.10.28 ) has some initial support for nodal shading. These changes will be in the next official Beta build - 3.00.03.
Here is an excerpt from the change-log :

(*) Nodal Shading: Initial support. Only MODO's standard material, V-Ray materials and V-Ray textures can be used in the nodal networks.
When a V-Ray material or texture is added to the Schematic, all texturable channels are automatically added to the Schematic as well.
All other channels cannot be textured;
(*) Nodal Shading: Support for Channel Modifier -> Color -> Color Blend;
(*) Nodal Shading: Support for Channel Modifier -> Color -> Color Correct;
(*) Nodal Shading: Support for Channel Modifier -> Color -> Color Gamma;
(*) Nodal Shading: Support for Channel Modifier -> Color -> Color HSV;
(*) Nodal Shading: Support for Channel Modifier -> Color -> Color Invert;
(*) Nodal Shading: Support for Channel Modifier -> Color -> Color Kelvin;
(*) Nodal Shading: Support for Channel Modifier -> Conditional -> All types;
(*) Nodal Shading: Support for Channel Modifier -> Math -> Basic Math: Add, Average, Divide, Maximum, Minimum, Modulo, Multiply, Subtract;
(*) Nodal Shading: Support for Channel Modifier -> Math -> Math: Absolute, Ceiling, Constant, Exp, Floor, Log, Log10, Power, Square Root;
(*) Nodal Shading: Support for Channel Modifier -> Math -> Trigonometry: Cos, Sin, Tan;
(*) Nodal Shading: Support for Shader Inputs -> Ray Type -> Camera Ray, Shadow Ray, Reflection Ray, Refraction Ray, Indirect Ray, Caustic Ray, Number of Bounces;

There are still a lot of things to implement, let me know if you need something in particular so I can implement it first.

Greetings,
Vladimir Nedev

[1funk]

Great to hear Vladimir. I didnt expect you guys to start work on nodes so soon. I don't have access to nightly builds though.

[vladimir.nedev]

The nightly builds require a dongle for their licensing. If you already have a dongle for other versions of V-Ray, it will be easy to give you access I think.

Greetings,
Vladimir Nedev

[1funk]

Yeah that's what I meant. I don't have a dongle Hopefully you guys will start releasing more frequent public betas