I’ve found two things thus far.
- Babylon appears to process the hdr to a lower resolution
- As per the reply to the post linked below, I tried to set hardware scaling for a local development test and I think it may have helped just the slightest. Things still don’t quite match though.
scene.getEngine().setHardwareScalingLevel(1 / window.devicePixelRatio);
I’m a new user so I don’t appear to be able to upload files. Here’s a link to the hdr and glb if you care to play with them.