barrl

Barrl is a fabric rendering specialized in 3D for minecraft 1.21.x

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fabriclibrary
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About this Mod

barrl

Barrl is a fabric rendering library targeted towards minecraft 1.21.x

API

How to use it as an api for your own mod.

First we'll need to add the JitPack repository so we can actually pull from

build.gradle

repositories {
    mavenCentral()
	maven "https://jitpack.io"
}

Now we head over to the JitPack Builds where you can go into Branches and get the one you need, once you have located the correct one for you, you need to click on the Get It button.

What now?

Below you can scroll in the page, it'll show you how to "import" it, basically we need to edit the build.gradle file once more

dependencies {
	// To change the versions see the gradle.properties file
	minecraft "com.mojang:minecraft:${project.minecraft_version}"
	mappings "net.fabricmc:yarn:${project.yarn_mappings}:v2"
	modImplementation "net.fabricmc:fabric-loader:${project.loader_version}"

	// Fabric API. This is technically optional, but you probably want it anyway.
	modImplementation "net.fabricmc.fabric-api:fabric-api:${project.fabric_version}"
	modImplementation "net.fabricmc:fabric-language-kotlin:${project.fabric_kotlin_version}"

	// Adding Barrl library
	modImplementation "com.github.Synnerz:barrl:1.21.5-SNAPSHOT"
}

You need to add it here, you get the link ("com.github.Synnerz:barrl:1.21.5-SNAPSHOT") in the same page that was linked above.

How To Use

Barrl implements its own Events and Context, this Context class is the most important one since everything is basically in there.

Context

This class holds reference to a few things that are required for rendering, as well as providing some helpful helper methods for you to render in the world.

Context.Immediate

Immediate is a static field that will basically act as the "global" Context instance in order for you to be able to use it inside other contexts (even if they don't come from Barrl)

NOTE: This mode requires you to use it at the almost end of a rendering, for example:

WorldRenderEvents.LAST.register {
    Context.Immediate?.renderWaypoint(-5.0, -61.0, -3.0, phase = true, color = Color.CYAN)
}

If you use START instead it will throw error/not work

Context dot

These are the helper methods that are added inside of Context

  • renderFilledShape
  • renderFilledBox
  • renderBoxShape
  • renderBox
  • renderString
  • renderBeam
  • renderWaypoint

WorldRenderEvent

We also add our own events since it's easier to handle a library like this that way

These events are used as regular Fabric events are used.

Types

  • START
  • LAST

License

Barrl is licensed under the AGPL 3.0 License

Available Versions

1.6.0-1.21.10release
MC 1.21.9, 1.21.10fabric
December 14, 2025
1.5.0-1.21.10release
MC 1.21.9, 1.21.10fabric
December 1, 2025
1.5.0-1.21.8release
MC 1.21.6, 1.21.7, 1.21.8fabric
November 26, 2025
1.5.0-1.21.5release
MC 1.21.5fabric
November 19, 2025
1.4.0-1.21.5release
MC 1.21.5fabric
November 19, 2025

How to Install barrl on Your Server

1

Order Server

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

2

Set fabric Loader

In the panel under "Egg", select the fabric loader and matching Minecraft version (1.21.10).

3

Install Mod

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

Compatibility

Mod Loaders

fabric

Minecraft Versions

1.21.10, 1.21.9, 1.21.8 (+3 more)

Server-side

Unsupported

Recommended RAM

4 GB(min. 3 GB)

Frequently Asked Questions

barrl 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 (1.21.10). You can switch loaders with one click in the panel.

Is barrl compatible with fabric?

barrl officially supports fabric for Minecraft 1.21.10, 1.21.9, 1.21.8. The Mado dashboard automatically detects incompatible loader combinations.

Server lagging with barrl – how to optimize performance?

Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if barrl 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.

Rent Modded Server

Install barrl with just one click on your server.

Recommended RAM
4 GBab €8/mo
Min. 3 GB | +1 GB pro 8 Spieler
Create Server Now
1-Click Mod Install
NVMe SSD Storage
DDoS Protection included

Details

License
GNU Affero General Public License v3.0 only
Server-side
Unsupported

Supported Versions

1.21.101.21.91.21.81.21.71.21.61.21.5