lwjgl3ify (1.12.2)
Run Minecraft 1.12.2 using LWJGL3 and modern Java (17 and newer)
About this Mod
LWJGL3ify
Brings LWJGL3 and modern Java versions to Minecraft 1.12.2.
Bundles RetroFuturaBootstrap as a flexible early load plugin system. This is a 1.12.2 port of the 1.7.10 version of lwjgl3ify.
Lwjgl3ify depends on MixinBooter.
Compatibility
Though lwjgl3ify tries to be compatible, there will inevitably be mods that don't work with it. If you encounter a mod that doesn't work with lwjgl3ify, please report it on the issue tracker if someone hasn't already!
Configs
If you want to tweak your default window size, OpenGL context properties or other more advanced settings, check out the config file in config/lwjgl3ify.cfg after the first startup.
Server installation
First, install a working 1.12.2 Forge server, from a modpack zip or using forge's installer.
Then, install the mod jar (and mixinbooter) in mods/, and download the forgePatches jar. Put the forgePatches jar in the same folder as your forge-universal and minecraft server jars.
Thermos/Crucible/Hybrid servers are not supported!.
Lwjgl3ify also depends on MixinBooter.
Rename the forgePatches jar to just lwjgl3ify-forgePatches.jar. Create a file named java9args.txt with the contents of the file in this mod's sources.
You can now launch the server with a command like the following, assuming the first java executable on your PATH is java 11, 17, or newer:
java -Xmx6G -Xms6G @java9args.txt -jar lwjgl3ify-forgePatches.jar nogui
Available Versions
How to Install lwjgl3ify (1.12.2) on Your Server
Order Server
Order a Minecraft Java server with at least 3 GB RAM (4 GB recommended).
Set forge Loader
In the panel under "Egg", select the forge loader and matching Minecraft version (1.12.2).
Install Mod
Open the mod browser in the dashboard and search for "lwjgl3ify (1.12.2)". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.
Compatibility
Mod Loaders
Minecraft Versions
1.12.2
Server-side
~ OptionalRecommended RAM
4 GB(min. 3 GB)Frequently Asked Questions
lwjgl3ify (1.12.2) server crashes on startup – what to do?
Most common cause: wrong forge 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 (1.12.2). You can switch loaders with one click in the panel.
Is lwjgl3ify (1.12.2) compatible with forge?
lwjgl3ify (1.12.2) officially supports forge for Minecraft 1.12.2. The Mado dashboard automatically detects incompatible loader combinations.
Server lagging with lwjgl3ify (1.12.2) – how to optimize performance?
Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if lwjgl3ify (1.12.2) 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 lwjgl3ify (1.12.2) with just one click on your server.