Hi Guys,
is there a possibility in corona to mask objects behind a refractive material like glas ?
Hey! This could be a quick solution for ya - https://coronarenderer.freshdesk.com/support/solutions/articles/5000529357-how-to-make-an-object-invisible-in-masks-render-elements- 
Yeah, i saw that. But then i don´t have the glas itself in a mask !