PhotonDust particles sometimes do not respect transparency

[Baplar]

Summary

While many particles do use transparency properly, some others don’t.
So far, I haven’t been able to pinpoint exactly what the condition is. I will add comments here if I find out more.

Reproduction Steps

1. Visit Shadowed Cove.
2. In the side room with the cauldron, look at the particles floating under the ceiling: they are white squares.

Expected / actual

Expected: Particles should use proper alpha channels and/or transparency masks.

Actual: Some particles don’t respect their transparency settings.

Logs / attachments

2026-05-26_02-08-19.log

[Baplar]

Fixed by #617