[GTNH 2.5.1] ArrayIndexOutOfBoundsException in specific chunks about angelica

[MisterNorwood]

I narrowed it to extra utilities colored lamps, they are themselves transparent and make other things around them transparent.

[mitchej123]

Can you narrow down which block(s) are causing this, and try reproducing it?

[MisterNorwood]

Can you narrow down which block(s) are causing this, and try reproducing it?

Specifically, it is a cyan-stained clay slab, in a vertical position. I will attempt to recreate it.

[MisterNorwood]

I got it! here is a schematic that if placed, causes the out of bounds exepction on any world:
debug.zip
Though, I am not sure what causes it now, maybe lanterns? Check it out for yourself

[MisterNorwood]

@mitchej123 Hey, could you confirm if the information provided is detailed enough for the issue? Should I open an issue with a proper title, and close this one?
https://mclo.gs/QWtEWVy here is an extra log from client.

[mitchej123]

We've already identified the issue, and we've got a potential fix.

The renderer for exu is accessing a TE at y=256, and the same X/Y in each chunk. We're rendering subchunks (16x16x16) + 2 extra blocks on each side, so it's getting an OOB when trying to find y=256. It's a ISBRH which we render on the main thread, unless whitelisted, so we can pass it the full client world instead of a world slice....

[embeddedt]

In theory, this should be fixed as of alpha 6 or 7.