Modscraper Modscraper Minecraft
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Catalyst

Mod

Lightweight client-side optimizations & tweakz that stack with Sodium

Type

Mod

Modrinth Downloads

2,938

Modrinth ID

DtYVGFet

Last Updated

Apr 27, 2026

Description

Fabric performance mod for Minecraft. Speeds up rendering, resource loading, and block entities. Works with Sodium.

Features (may change over time)

Rendering

  • Modern GL Context: forces Minecraft to use OpenGL 4.6 and applies core profile instead of the default outdated OpenGL 3.2
  • Async Meshing: chunk meshes get built off thread, prioritized by distance to camera
  • Mesh Cache: only rebuilds chunk meshes when something actually changed
  • Render Batch: groups draw calls with matching render state together
  • Render Cull: skips sign text and beacon beams at distance, turns off beacon beam rotation

Resources

  • Async Reload: resource packs reload in the background, no freeze

General

  • Enable Catalyst: turn the whole mod on or off
  • Debug Mode: spits debug logs into the console

Everything is toggleable from the config screen. Get to it through Mod Menu, Sodium's config, or the Catalyst button on the title screen.

📋 Compatibility

Minecraft 1.21.11 Loader Fabric Java 21+ Sodium works fine, has config integration Mod Menu works fine, has config screen License MIT

⚠️ Incompatible Mods

No known incompatibilities at this time. If you find one, please report it at the issue tracker.

🙏 Credits

  • Sign and beacon render optimizations heavily inspired by FeyTweaks by feytox
  • GL context hint approach from ThreatenGL by richy

Compatibility

Mod Loaders

Fabric

Game Versions

1.21-pre1 1.21-pre2 1.21-pre3 1.21-pre4 1.21-rc1 1.21 1.21.1-rc1 1.21.1 1.21.2-pre1 1.21.2-pre2 +55 more

Screenshots

Similar Mods

Included in Modpacks

External Resources