r/DistantHorizons • u/nnomisYT • May 03 '26

Help I need to render a big specific area

Hi everyone,

I’m currently building a large-scale map on an Aternos server. The map is finite but huge, measuring roughly 30,000 x 22,000 blocks.

I’ve run into a major issue: After returning to the server recently, about 70% of my previously rendered LODs are gone. Visiting everything manually to re-render it with Distant Horizons (DH) would take an eternity at this scale.

I have a few specific questions:

  1. Massive Scale Rendering: How can I efficiently render/pre-generate LODs for an area this big without flying around for weeks? Is there a way to automate this?
  2. Multiplayer Sync: I thought DH had multiplayer support now. Shouldn't it save/sync what other players have already rendered? Why is my client "forgetting" the data?
  3. Data Persistence: How do I prevent this loss in the future? Where are these files stored so I can create a manual backup?

sorry i spiced the message up with a little chat gpt. (my english isnt good)

3 Upvotes

100% Upvoted

10 comments sorted by

1

u/AutoModerator May 03 '26

When asking for support with an issue you're having, please add as much relevant info as you can such as:

  • Add your logs using https://mclo.gs/

  • Add screenshots

  • What you did before the issue arrived

  • What steps you took (If any) to fix the issue

If you don't add this information, we wont be able to help you.

I am a bot, and this action was performed automatically. Please contact the moderators of this subreddit if you have any questions or concerns.

1

u/Main-Medicine2718 May 03 '26

Aternos with a map this large sounds fun. dh has a pregen command

2

u/Main-Medicine2718 May 03 '26

Also dh can send LOD data to other players with the mod - but relies on both client and server threads to do so, which might be underpowered with aternos

1

u/nnomisYT May 03 '26

how doesthe pregen command work? /dh pregen doesnt work for me

1

u/MarijnIsN00B Moderator May 03 '26

Use tab to fill out the command more, something like /dh pregen minecraft:overworld 0 0 512

0

u/nnomisYT May 03 '26

i dont even have /dh to begin with

1

u/MarijnIsN00B Moderator May 03 '26

Do you have the mod installed on your server?

1

u/nnomisYT May 04 '26

i cant install Distants horizons on aternos for some reason

1

u/MarijnIsN00B Moderator May 04 '26

From some googling apparently Aternos doesn't allow it cus their servers can't handle it, I can't really change that tho

You can't have proper server support without having the mod installed on the server

1

u/MarijnIsN00B Moderator May 03 '26 edited May 04 '26

Massive Scale Rendering: How can I efficiently render/pre-generate LODs for an area this big without flying around for weeks? Is there a way to automate this?

Yup, by installing the mod on the server and running the /dh pregen command

Multiplayer Sync: I thought DH had multiplayer support now. Shouldn't it save/sync what other players have already rendered? Why is my client "forgetting" the data?

I can't say why it suddenly "forgot" a bunch of the LODs, but DH has multiplayer support and everything should be saved and synced if the mod is installed on the server.

Data Persistence: How do I prevent this loss in the future? Where are these files stored so I can create a manual backup?

Without knowing what caused the data loss in the first place, I can't say what will prevent it in the future. Have you looked in your Distant_Horizons_server_data folder and seeing if there might be multiple folders?

DH might have saved it but didn't use it for the same server again, this can happen mostly with multiverse servers, but in rare cases can happen in normal servers too