Blur/Refraction of 3D Scene underneath UMG widget?

I’m curious if is it possible to achieve blurred 3D scene under certain UMG element? Something similar to this?

Bez tytułu.png

Of course I’m not talking about static blurred image, but realtime 3D scene blurring.

Yeah, but it’s fairly tricky. You need to have a post process setup to blur a bunch of regions and have the widgets send it the rects to blur.