Summary
Enabling Nanite seems to break the tangent space.
Please select what you are reporting on:
Creative
What Type of Bug are you experiencing?
Assets
Steps to Reproduce
- bake a tangent space normal map from a high poly to a low poly mesh (ask me I’ll send you the test mesh) using a software compatible with Mikk (Subtance Painter/Designer/Marmoset Toolbag
- import the low poly mesh in Unreal, uncheck recompute normal, check recompute tangent/Mikk
- import the normal map
- setup a simple material using the normal map, basecolor to 1, metallic to 1, roughness to 0
- assign the material to the low poly mesh
Expected Result
Reflections on the flat sides should be flat.
Observed Result
Reflections are distorted.
But if you disable the Nanite support, then the result is perfect. (see a attached screenshots).
Platform(s)
Windows
