Sodium

Sodium

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Desynchronization between light data and baked lighting factory

Closed this issue ยท 2 comments

commented

Bug Description

The rendering engine occasionally produces lighting quirks preferably on chunk borders. Calling Debug Reload Chunk temporally fixes the issue.
Which is problem is this, Vanilla or Sodium, i don't know, because i simply do not care.

vid.mp4

Reproduction Steps

Install C2ME at it increases chance to bugout the
Disable NoTickVD in c2me.toml as it causes many light desyncs between the server and the client (LMAO)
Spin up a singleplayer world with spectator mode enabled.
Fly trough underground and find the light quirks.

Log File

a

Crash Report

crash-2025-08-04_12.57.33-client.txt

commented

This appears to be a bug with Minecraft itself and is not related to Sodium. We've taken special care to make sure that chunk rendering is properly synchronized with world state when render tasks are created. Although it may seem easier to reproduce with Sodium and C2ME (w/ NoTickVD enabled), this ultimately is just the result of a synchronization bug in the game itself, and there is no easy way for us to fix that.

See https://bugs.mojang.com/browse/MC-300691.

commented

This doesn't feel right. Could you connect persistent light quirk, desync and this lighting bug more reliably?