View source for BetaEvolutions/MultiMC-LWJGL3-Patch

[[Category:Guides]]
== Using Beta Evolutions 2.0.7+ with MultiMC or Prism Launcher ==

Starting with '''Beta Evolutions 2.0.7''', Beta Evolutions migrated from '''LWJGL 2''' to '''LWJGL 3'''. This migration provides performance improvements, bug fixes, improved compatibility with modern systems, and enables new features such as '''controller input'''.

By default, '''MultiMC''' and '''Prism Launcher''' configure Minecraft Beta 1.7.3 to use LWJGL 2 as that was the version of LWJGL originally used by Minecraft in 2011. Beta Evolutions 2.0.7 and later require LWJGL 3 and therefore require an additional configuration change when using these launchers.

Follow the instructions below to configure your instance.

=== Instructions ===

{{Warning|You must replace the '''entire''' contents of the existing LWJGL JSON file. Leaving portions of the old configuration in the file, or failing to copy the complete replacement configuration, may prevent the instance from launching correctly.}}

# Create a Minecraft Beta 1.7.3 instance in '''MultiMC''' or '''Prism Launcher''' and install the Beta Evolutions JAR mod as normal.
# Right-click the instance and select '''Edit Instance'''.
[[File:LWJGL3-1.png]]
# Select '''Version''' from the left-hand menu.
[[File:LWJGL3-2.png]]
# Select the '''LWJGL''' component from the version list.
[[File:LWJGL3-3.png]]
# Select '''Customize''' from the menu on the right, then select '''Edit'''. The LWJGL configuration JSON should open in your default text editor.
# Open the [https://gist.githubusercontent.com/RhysB/fad38289f9c62ea333eb64b6e7b7e1de/raw/63101e6f6e5e775201a0c0bc3d1c6189965aafad/gistfile1.txt Beta Evolutions LWJGL 3 Override JSON].
# Replace '''the entire contents''' of the existing LWJGL configuration file with the contents of the override JSON.
# Save the file and close your text editor.
# Return to the '''Version''' menu in MultiMC or Prism Launcher.
# The LWJGL component should now be displayed as '''LWJGL 3 (RMC V1)''' instead of '''LWJGL'''. You may need to close and reopen the instance settings before the updated name appears.
[[File:LWJGL3-4.png]]
# Close the instance settings and launch the game.

=== Troubleshooting ===

If the game fails to launch after making the change:

* Confirm that the LWJGL component is displayed as '''LWJGL 3 (RMC V1)'''.
* Reopen the LWJGL configuration and ensure that the entire override JSON was copied correctly.
* Ensure that no sections of the original LWJGL 2 configuration remain in the file.
* Check the MultiMC or Prism Launcher log for errors relating to LWJGL libraries or native libraries.
* If necessary, remove the customized LWJGL component and repeat the instructions above using a fresh copy of the override JSON.

These instructions only apply to '''Beta Evolutions 2.0.7 and later'''. Earlier versions of Beta Evolutions use LWJGL 2 and do not require this override.