Description

I'm having an issue with the lighting on certain PBR models that have a lot of small details in the normal map. The way the details in the normal map are reflecting light seems to be off and the model comes across a bit too shiny and wet.

Below are images in various viewers. They use the same environment map from here: #521 (comment).

Model Viewer

Sketchfab

Substance

AR Quick Look

(Doesn't use the same environment map)

We created the material in substance painter, and Sketchfab & AR Quick Look render it as designed. Model-viewer makes it look like the normal map roughness is really low and reflective.

Live Demo

https://ninth-paste.glitch.me/

Download the model here

Browser Affected

• Chrome (74.0.3729.157)
• Firefox (66.0.5)
• Safari (12.0.3)

OS

• Android (not tested)
• iOS (12.3.1)
• MacOS (10.14.3)

Versions

• model-viewer: v0.3.1 and latest master #f5b3b55
• three.js: 105