NAN (black flickering pixels) render artifacts on Automotive Material?

msimons
Wed, 23 Sep 2020 17:24:43 +0000
Rendering

Hi,

just wanted to report potential NAN (flickering black pixel) rendering artifacts on the automotive material pack car paint when using multiple, overlapping point lights (moveable) with source length and radius set.

I was able to isolate it to the material’s normal channel (i.e. disconnecting the normal, the artifact went away), but identifying the root cause is beyond my material expertise

I was able to reproduce it by adding the Automotive Material pack added to a default photoStudio project with ray tracing enabled in the launcher version of UE4.25.3. Windows 10, Nvidia Quadro RTX5000 (vR450 U3(452.06)).

Attached two screenshots to illustrate.

thank you

Marcel

3 posts - 3 participants