Iris Extension

An extension for the Minecraft shader loader Iris with some useful features for shader developers.

45.1K Downloads

fabricneoforgedecorationoptimization

Rent Server with this Mod

About this Mod

An extension for the Minecraft shader loader Iris.

This mod needs a shader that utilizes its features, otherwise it will do nothing!

Currently the mod provides shader developers the ability to use up to 10 custom keybinds for the shader. Additionally it allows shader devs to create more custom effects by giving access to more player and world information to the shader.

Current shaderpacks utilizing features of the mod:

Eclipse (Bliss Edit)

For detailed information about the mod's features please visit the wiki: https://github.com/Merlin1809/IrisExtension/wiki

Available Versions

Iris Extension 1.0.2release

MC 1.21.1fabric, neoforge

July 9, 2026

Iris Extension 1.0.2release

MC 26.2fabric

July 9, 2026

Iris Extension 1.0.2release

MC 26.1, 26.1.1, 26.1.2fabric

March 29, 2026

Iris Extension 1.0.2release

MC 1.21.11fabric

March 29, 2026

Iris Extension 1.0.1release

MC 1.21.11fabric

March 16, 2026

How to Install Iris Extension on Your Server

Order Server

Order a Minecraft Java server with at least 3 GB RAM (4 GB recommended).

Set fabric Loader

In the panel under "Egg", select the fabric loader and matching Minecraft version (26.2).

Install Mod

Open the mod browser in the dashboard and search for "Iris Extension". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.

Compatibility

Mod Loaders

fabricneoforge

Minecraft Versions

26.2, 26.1.2, 26.1.1 (+3 more)

Server-side

~ Optional

Recommended RAM

4 GB(min. 3 GB)

Frequently Asked Questions

Iris Extension server crashes on startup – what to do?

Most common cause: wrong fabric version or insufficient RAM. Check the server log (latest.log) for "OutOfMemoryError" or "Mixin" errors. With Mado Hosting: ensure at least 3 GB RAM is allocated and the loader matches the mod version (26.2). You can switch loaders with one click in the panel.

Is Iris Extension compatible with fabric and neoforge?

Iris Extension officially supports fabric, neoforge for Minecraft 26.2, 26.1.2, 26.1.1. The Mado dashboard automatically detects incompatible loader combinations.

Server lagging with Iris Extension – how to optimize performance?

Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if Iris Extension consumes the most tick time. Common fixes: reduce server view-distance to 8-10, install "performant" or "starlight" as supplementary mods on Forge. With Mado Hosting, your server runs on NVMe SSDs with dedicated CPU cores for minimal latency.