displacement only on part of an object - problem

[Jiri.Matys]

Hi,

I am trying to achieve displacement on part of an object with vray blend. One material in vrayblend has displacement and one hasnt. And I use mask for blend. In vraydisplacementmod I checked Use object mtl, but it didnt work. Am I doing something wrong?
Thank you.

[ben_hamburg]

I remember a problem with Vrayblendmatzerial and material displacement. instead of using the material displacement, try blending the displacement in a composite map and don´t use object material.

[Jiri.Matys]

I tried that, but it doesnt work with vraydirt as mask.

[ben_hamburg]

If its possible, I´d try to bak the vraydirt mask and use the baked map to blend them instead.