[StrangePan][2.0.39] fulgora lightning visual artifact

[dbt0]

Just updated to 2.0.39 and noticed a visual artifact on lightning on Fulgora.

This is on a aarch64/M2 Macbook.

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[tinker9]

I can confirm the same issue, also on 2.0.39 on a MacBook Pro M1 Max.

What did you do?

Go to Fulgora remotely and wait for lightning. Zoom to a level where you can still see objects.

What happened?

The whole chunk lights up weirdly when there is a lightning strike.

What did you expect to happen instead? It might be obvious to you, but do it anyway!

I expect that the whole chunk isn't lit up like that. Just maybe some local glow.

Does it happen always, once, or sometimes?

Always unless zoomed out to the point where objects become coloured squares.

[StrangePan]

This seems to be related to the recent increase in minimum atlas texture size in 2.0.39 from 2048 to 4096. I'm not sure why it's only affecting Apple Silicon Macs with OpenGL , but there was a spot not updated with the new minimum Atlas size that seemed to be causing the issue.

[Madragas]

I came here specifically to report the same bug... although the artifacts on my computer are a little different (MacBook Air M3, latest OS up to date, Factorio 2.0.39). The square shape appears with the lightning, wobbles a little (for lack of a better term) before fading out, all within a little under a second.

Strangely, this only happens when zoomed out to max. When closing up on the character, the bug seems to disappear.

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