Masks (c_mask) ... affected by reflection/refraction

[JG_monomiru]

I guess it was asked before - but didn't really made it into feature request.

would be great to implement reflection/refraction working on mask-channels ... like Cmasking_mask - similiar so Vrays Material-roll-out in reflection / refraction - Affect Channels "color, color+alpha , all channels"

[Ondra]

duplicate: https://forum.corona-renderer.com/index.php/topic,9077.0.html