Corner issue on thin objects

[harumscarum]

there is room modeled as one object (walls+floor+ceiling). single-sided geometry (normals look inside of room)
room is perfectly modeled - everything is welded and no light leak occurs

but thin objects surfaces produce weird white noise on the corners - need to add Shell modifier to fix it

does Corona support single sided geometry?



Corona 1.52 (default settings) and 3ds Max 2014

[Christa Noel]

when your environment produce very bright light then your wall should has thickness, check this out
https://coronarenderer.freshdesk.com/support/solutions/articles/5000516209-i-can-see-noise-in-the-corners-of-my-scene-