Persistant Lighting Errors (Inconsistant Lighting)

[kvverti]

Affects 0.3.1b

This is not nearly as common in 0.3.1b as it was previously, but the current manifestation is similar enough that I think it is the same issue. I can consistently reproduce this by generating new chunks upward from underground.

This always happens along chunk borders (vertical and horizontal). The bug manifests itself when you travel near an underground area and the lighting is "updated" from level zero to level 15. Bugged chunks will appear in groups. Placing a light source does not fix the issue. Note that lighting is initially correct (light level zero), but it incorrectly updates when the player approaches.

The lighting errors are dependent on the order in which chunks are loaded. For a very long shaft, only some of the shaft will update to darkness when the top is covered. If the world is reloaded when the player is at the bottom, the shaft will be dark.

A shaft that is covered. The lit sections are the boundary between loaded and previously unloaded chunks^^
The left has correct lighting; the right has bugged lighting^^
A region of bugged caves deep underground^^
More bugged caves^^
Bugged lighting underwater. The lighting does not fix itself despite the surface being loaded^^
Bugged lighting under an overhang^^

[ajthemacboy]

It's like... the opposite of those stupid vanilla lighting errors!

[kvverti]

In summary, lighting is inconsistent, being dependent on chunk load order.

[cuchaz]

Lighting got a major overhaul recently. There's a good chance these problems are fixed in the upcoming version.

[kvverti]

Never mind. I just found some more. I'll see if I can get this in another world as well.

I was able to get the bug in a new world by travelling along the bottom of the ocean and the ascending, generating new chunks as I did so.

[kvverti]

False alarm again...found some more that wouldn't go away. But it seems that at least some of these glitches can be fixed with relog/proximity.

[pedroff1]

Found many glitches related to lightning, after a certain depth everything becomes dark, torches just light adjacent blocks, but not any other

[kvverti]

Block lighting is a different issue; namely it is easily reproducible while this issue is more sporadic and seemingly stems from load order.

[aBitterMelon]

(0.3b M3L, 0.3.1b TWM)
I can confirm that this also happens above Y=256 (in this case about Y=1,000).
Backround: I like to build up to Y=1,000 before I build my cities since I dont like having to flatten the terrain.