Description
Starlight
Forge mod for rewriting the light engine to fix lighting performance and lighting errors.
Future updates past 1.20
Please see: https://gist.github.com/Spottedleaf/6cc1acdd03a9b7ac34699bf5e8f1b85c
This project is available as a part of Moonrise
Compatibility
Starlight can be installed either on the dedicated server or client. It is not required to be installed on both sides.
If you have Starlight on the server, clients can use Vanilla/Phosphor/Starlight to connect. Likewise, if you have Starlight on
the client, you can connect to Vanilla/Phosphor/Starlight servers.
Starlight cannot be installed with Phosphor, they are completely incompatible.
Browsing through Starlight's Issue Tracker will show
further mod incompatibilities. Starlight is a rather destructive light engine rewrite, so it should be
expected to break mods more often.
Purpose
Starlight was developed for higher scale dedicated servers, as they suffered performance problems due to how ungodly slow the
light engine was. The only solution was to create an extremely invasive mod which rewrote the entire light engine.
I ported the mod to fabric so that I can update it during snapshots, and decided that publishing it for
all users, especially client users, would be beneficial. However, it does have the downside of being an invasive mod:
Being invasive didn't affect higher scale servers because they run on Bukkit.
Further reading on the technical details of how Starlight achieves its performance
can be read here: TECHNICAL_DETAILS.md
Performance for 1.20:
Here are a few graphs showing performance in 2 areas on: Block editing at high y-levels, and normal block light updates:
Light engine time chunk generation Graph has been removed as a benchmark as it is invalid for 1.20. Starlight and Vanilla are close enough on 1.20 that
this test is also useless.

Performance for 1.19.4 and below:
Here are a few graphs showing performance in 3 critical areas: Chunk generation, Block editing at high y-levels, and normal block light updates:

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What means Verified?
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Compatibility: The mod should be compatible with the latest version of Minecraft and be clearly labeled with its supported versions.
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Functionality: The mod should work as advertised and not cause any game-breaking bugs or crashes.
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Security: The mod should not contain any malicious code or attempts to steal personal information.
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Performance: The mod should not cause a significant decrease in the game's performance, such as by causing lag or reducing frame rates.
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Originality: The mod should be original and not a copy of someone else's work.
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Up-to-date: The mod should be regularly updated to fix bugs, improve performance, and maintain compatibility with the latest version of Minecraft.
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Support: The mod should have an active developer who provides support and troubleshooting assistance to users.
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License: The mod should be released under a clear and open source license that allows others to use, modify, and redistribute the code.
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Documentation: The mod should come with clear and detailed documentation on how to install and use it.
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How to Install
Download Forge & Java
Download Forge from the offical Site or here. If you dont have Java installed then install it now from here. After Downloading Forge you can run the file with Java.
Prepare
Lounch Minecraft and select your Forge istallation as Version this will create a Folder called Mods.
Add Mods
Type Win+R and type %appdata% and open the .minecraft Folder. There will you find your Folder called Mods. Place all Mods you want to play in this Folder
Enjoy
You are now Ready. Re-start your Game and start Playing.