Page MenuHome

Eevee SSRefraction noisy at low roughness
Confirmed, NormalPublic

Description

System Information
Operating system: Windows 10 Pro
Graphics card: GTX 1050TI

Blender Version
Blender 2.93 and 3.0

Screen space refraction has a weird noisy ball on the center of it, with a kind of low quality pixelated look, only ways to get rid of it partially is by either increasing the IOR, increasing the Refraction Depth, or changing the roughness of the material to something that isn't between 0.01 - 0.3.
This applies to both the roughness and trasmission roughness

Side note : i tried changing all the settings in the render properties, nothing worked, speaking of which, Half Res Trace does NOT apply to Refraction, only Reflections.

Exact steps for others to reproduce the error
Just do a basic setup of SSRefractions, nothing more than that

More extreme example:

Event Timeline

Richard Antalik (ISS) changed the task status from Needs Triage to Needs Information from User.Aug 6 2021, 2:16 AM

I can't reproduce the issue. Please provide sample .blend file.

here it is

Pratik Borhade (PratikPB2123) changed the task status from Needs Information from User to Needs Triage.Aug 30 2021, 2:06 PM
Pratik Borhade (PratikPB2123) updated the task description. (Show Details)

Checking now with new GPU, but still don't see anything out of ordinary.

here is a better image of the problem, it happens when the roughness value is really low but not 0


When the IOR is set to 1.0 you get that issue but everywhere

Setting the IOR to something other than 1.0 and increasing the refraction depth helps handle this issue, but it is still very noticeable

Richard Antalik (ISS) changed the task status from Needs Triage to Confirmed.Sep 2 2021, 6:53 AM
Richard Antalik (ISS) updated the task description. (Show Details)