
Modrinth · Minecraft mod
ScalableLux
A Fabric mod based on Starlight that improves the performance of light updates in Minecraft.
Quick answer
Which ScalableLux release should I use?
ScalableLux 0.3.0-alpha.0.6+1.21.1 targets 1.21.1 with NeoForge. Installation on the client is optional. Installation on the dedicated server is optional. No extra mods listed for this file.
Where it goes
Is ScalableLux required on the client, server, or both?
Installation on the client is optional. Installation on the dedicated server is optional.
The source marks this as usable on both the client and server.
What else does ScalableLux 0.3.0-alpha.0.6+1.21.1 need?
0.3.0-alpha.0.6+1.21.1. Change the file and its required mods may change too.
This file does not list any required mods. Do not add a library just because a different file uses it.
This file does not list any required or optional mods.
Before you install it
Add ScalableLux without breaking your instance.
Built for ScalableLux 0.3.0-alpha.0.6+1.21.1. Pick another file and the loader, install side or required mods may change.
- 01
Stick to this file
Use 0.3.0-alpha.0.6+1.21.1. It targets 1.21.1 with NeoForge; another release may have different loader, side or dependency requirements.
- 02
Bring the mods it needs
This file does not list any required mods. Do not add a library just because a different file uses it.
- 03
Put it on the correct side
Installation on the client is optional. Installation on the dedicated server is optional.
- 04
Pick the file you checked
Use the “Get this file” button beside 0.3.0-alpha.0.6+1.21.1. It opens that exact file at the source.
About this project
What does ScalableLux add?
ScalableLux
A Fabric mod based on Starlight that improves the performance of light updates in Minecraft.
Why does this fork exist?
- Starlight is no longer maintained as a mod since Mar 8, 2024.
- The performance of vanilla lighting engine is still a bottleneck for high-performance chunk generation.
- The base Starlight is still 100% faster than vanilla,
allowing the chunk system to scale beyond 24 threads. - Starlight's "stateless" design allows for parallel light updates, further widening the performance gap.
It is still rather important for dedicated servers with more players to stress chunk generation.
Therefore, it is still important for Fabric or other modded servers with plenty of players.
What does this fork do?
- Contains all the performance improvements from Starlight with additional bug fixes.
- Optionally allows for parallel light updates, bringing significant performance improvement in high-speed
world generation and heavy light updates scenarios.
Project description from Modrinth.
Pick your setup
ScalableLux by Minecraft version and loader
Choose the version and loader you play, then open the matching release.
26.1.2
2 loader builds1.21.11
1 loader build1.21.1
2 loader buildsCheck the dependencies, then try the file in a copied instance before changing a world you care about.
Recent files
ScalableLux versions and loaders
0.3.0-alpha.0.6+1.21.1
ScalableLux-neoforge-0.3.0-alpha.0.6-all.jar
12 Jul 2026
0.3.0-alpha.0.5+1.21.1
ScalableLux-fabric-0.3.0-alpha.0.5-all.jar
12 Jul 2026
0.3.0-alpha.0.18+26.1.2
ScalableLux-neoforge-0.3.0-alpha.0.18-all.jar
10 Jul 2026
0.3.0-alpha.0.3+1.21.11
ScalableLux-fabric-0.3.0-alpha.0.3-all.jar
9 Jul 2026
0.3.0-alpha.0.17+26.1.2
ScalableLux-neoforge-0.3.0-alpha.0.17-all.jar
9 Jul 2026
0.3.0-alpha.0.2+26.1.2
ScalableLux-fabric-0.3.0-alpha.0.2-all.jar
9 Jul 2026
0.3.0-alpha.0.16+26.2
ScalableLux-neoforge-0.3.0-alpha.0.16-all.jar
9 Jul 2026
0.3.0-alpha.0.3+26.2
ScalableLux-fabric-0.3.0-alpha.0.3-all.jar
9 Jul 2026
0.3.0-alpha.0.16+26.1.2
ScalableLux-neoforge-0.3.0-alpha.0.16-all.jar
5 Jul 2026
Looking for an older file? The official Modrinth project page is in Resources.