Any way to get a matte for VrayFlakesMtl?

[Raven]

I have a setup that requires a clear plastic to be coated with the VrayFlakesMtl.
I am using affect shadows in my clear material, but when I add the FlakesMtl on top I loose the transparent shadows.
It there any way to get the flakes material to affect shadows, or even just get a matte out of it so I can just mask the non flake areas in the blend material?

Any ideas.

Thanks

[Svetlozar Draganov]

The shadows from the VRayFlakesMtl are completely opaque that's why the result looks unexpected. This is an area that might be improved in the future V-Ray versions.
As for now what could be done is to replace the shadows from the FlakesMtl with the help of the VRayOverrideMtl, just plug the FlakesMtl as a base and a fully transparent shader as a shadow mtl.
Then use this OverrideMtl as a coat material of your original shader and the shadows should remain transparent.



scene: http://ftp.chaosgroup.com/support/sc...no_shadows.max

[Svetlozar Draganov]

Another option would be to bake the FlakesMap and then use that map as a Opacity Map - with this setup you will get a proper shadows from the FlakesMtl.


scene: http://ftp.chaosgroup.com/support/sc...Flakes_Mtl.zip

[Raven]

Thanks Svetlozar

Will give those a test.