VrayMtlWrapper not working in VrayBlendMtl!!

[gagui]

Hello.
I'm trying to get a material with a masked alpha. To do that I put the material in the primary slot of a vrayBlendMtl and in the coat layer I put the same material but with a VrayMtlWrapper aplied with alpha contribution set to -1. I put my mask bitmap in the "blend amount" slot of the coat layer.

Well,when I render the object I get the full object with alpha -1 so it's not working.

If I try the same procedure with a standar blend material, the thing works as it's expected. So I think we have a little bug with the VrayBlendMtl.

[vlado]

This cannot be made to work with the VRayBlendMtl material, since it uses one-pass lighting; would be best to stick to the standard "Blend" in this case.

Best regards,
Vlado

[gagui]

Ok, thank you Vlado.