Multimattes and gradients in blend materials

[DPS]

It appears that multimattes don't respect gradient ramps when used as part of a mask in blend materials.

Would it be hard to implement? I can work around it in this case but this was already my work around for vraydirt causing artifacts when using the bias on turbosmoothed objects.

[vlado]

You mean when using material IDs?

Best regards,
Vlado

[DPS]

Hi

Yes with matIDs, I noticed a black square on some of my multimatte renders and traced it back to my brecon gradient. I then tried it with a falloff map which gave the same result - no transition just a sharp edge.

I like how you can get your RGB for blend materials. I have reused a paint shader in several blend materials, I've also reused metals, and dirts and the only thing preventing good multimattes for these are the gradients that I've used.

Thanks

[vlado]

Yes with matIDs

Then no, unfortunately. But, in V-Ray 3.0, the material select element generates an alpha channel which is the mask for the specified material.

Best regards,
Vlado