Blank spots, streaks and squares on rendered map about bluemap

[pschichtel]

yeah I'll give chunky a shot in the next days and report back.

[Faithcaio]

We had quite a lot (but not all) of cases where the single black chunks were located on a village. Maybe it has smth. to do with structures.

Perhaps the black spaghetti just shiften positions a bit? Like, the loaded chunks got fixed, but now the chunks around that got borked, while they were initially still a valid

Thats exactly what happened.

[pschichtel]

Triggering generation on all existing chunks cleared it up. @TechnicJelle your guide seems helpful, but Chunky will also generate new chunks (which we didn't want) and Light Cleaner is Spigot only, so we've quickly built a small command to walk over only the existing chunks.

[pschichtel]

@Faithcaio did I miss anything?

[TechnicJelle]

While BlueMap GitHub Issues aren't really a place for support (the Discord is more suitable for that), I can still link you to this guide that I have written that should hopefully help you fix this issue: https://bluemap.bluecolored.de/community/FixLighting.html

This is probably due to those chunks being the border between different Minecraft versions of chunks.

If you have more questions, I implore you to ask them in the Discord, because helping people is much easier and quicker over there than here.
Good luck!

[pschichtel]

@TechnicJelle thanks for the link, I'll give that a shot. But it seems it should have helped to walk around the chunks, but it didn't always help.

[TechnicJelle]

Yes, loading the chunks in-game forces the server to upgrade and fix them.
They should indeed show up on the map with the next update, then.
It's odd if it didn't.
Perhaps the black spaghetti just shifted positions a bit?
Like, the loaded chunks got fixed, but now the chunks around that got borked, while they were initially still a valid, if older, MC version chunk.

[TBlueF]

Adding what has already been said:
BlueMap 5.x has a command /bluemap debug map <map> [x z] which will give some debug-info about the chunk and map-tile at the given position..
Interesting for this might be the tile-state in one of the dark regions which should show one of:

tile-state	description
bluemap:unknown	bluemap never attempted to render this map-tile
bluemap:rendered	bluemap thinks it rendered this map-tile and there was no problem
bluemap:not-generated	one of the chunks needed to render this map-tile does not exist in the region-file
bluemap:missing-light	one of the chunks needed to render this map-tile does not have its Status field set to minecraft:full
bluemap:chunk-error	bluemap failed to load/parse one of the chunks needed to render this map-tile (error while loading chunk)
bluemap:render-error	some error occurred while rendering this map-tile

I would expect tile-state: bluemap:missing-light here and loading the chunks either ingame or with chunky should cause minecraft to upgrade them to Status: minecrtaft:full again and fix the issue :)

The long "streaks" at the border between old-version and new-version chunks are a known problem when switching minecraft-versions, but i am a little surprised about the "many small black splits".. not quite sure what might cause them 🤔

[TechnicJelle]

If you follow my guide properly, Chunky will not generate more chunks.
It will only go over the chunks that already have been generated in some capacity, and make the server fix them.
That's what the "pattern world" is for.

But I'm glad to hear you've found a solution :)

[pschichtel]

Oh true, we ended up reading the chunky documentation instead of you guide and didn't find that command apparently. Sorry for the confusion :D It's only a few lines of code in sponge, so no big deal.

[TechnicJelle]

It's a pretty new feature of Chunky

Although it is certainly documented: https://github.com/pop4959/Chunky/wiki/Patterns#world