Glass rendering issue

[daxter33]

Rendering issue with glass material creating a distorted glass-like outline of whatever is in front of your camera. The first picture is one of my games and the second picture is a blank baseplate with a classic sword. The only connection is they were taken on the same machine in studio. To be clear, I am standing totally in front of the glass so there should be no refracting and it doesn’t look like a reflection.

REPRO: Stand in front of a piece of glass and look around. It’s easier to see if something is in your hand or being held in front of your camera, e.g. with the gun in the first picture. The distortion appears depending on your camera angle relative to the glass. This doesn’t seem like an intended feature and makes glass virtually unusable in my game because of the distortion. I can make a video if that helps to visualize.

[XAXA]

This is a known issue. Here’s an official poll about it: https://devforum.roblox.com/t/poll-glass-material-limitations/76369

@Homeomorph

Artifacts appear around the edges of objects near or in front of glass.

image.jpg1339x746 358 KB

Here, the tearing on the sidewalk happens because the glass is trying to refract an area covered by the window column. Because of how we’re computing refraction, we don’t have information on areas that are covered on the screen. The current system just disables refraction on pixels where we don’t have the information we need. You see the tear because a group of pixels with refraction enabled are right next to a group of pixels where refraction has been disabled.