[electricsun]

hi can u mask by cavity in mari like u can in zbrush?
I saw in a forum in Mari, Objects menu, select Ambient Occlusion, wait for the calculation to complete. When it has, go to your Projection pallette, turn on Mask Preview Enabled, and turn on Ambient Occlusion Mask, by default it will mask off the occlusion, although you can alo invert it.

In effect you can generally use it to similar effect to the dry brush in Mudbox, which I think it purely topoligical height based.

or even faster, bake your cavity/AO into a texture and use this as a channel mask.

is this the same as mask by cavity?