Banding artifacts

[jsantell]

Description

I think this started occurring with #227, possibly due to the change of EquirectangularToCubeGenerator. It's observable for brief moments in the fuzzer when changing out resources quickly.

Of course the fuzzer isn't a realistic test case, so not sure how big of a deal this is in practice, but it is peculiar and unexpected.

@mrdoob had a hunch that it could be from setting a normal map -- although the sphere pictured does not have one, other models previously loaded (DamagedHelmet) certainly has a normal map. "These artifacts look like what you see when you zoom too much in a derivatives-based normal mapping."

Browser Affected

• Chrome
• Edge
• Firefox
• Helios
• IE
• Safari

OS

• Android
• iOS
• Linux
• MacOS
• Windows

[elalish]

@cdata Do you know how to reproduce this? I've made enough rendering changes I wonder if it hasn't been fixed accidentally by now.

[mrdoob]

I think this can be closed now.

[cdata]

I have never reproduced this issue myself. I think it's safe to close and we can re-open if we manage to reproduce it.