Lumen Java 1.0.0-beta.3 for Minecraft 26.2

Lumen Java 1.0.0-beta.3-mc26.2 is the separate Fabric build for Minecraft 26.2.

It includes the current Lumen features: ore and chest Xray filters, shader-compatible through-wall outlines, hold-to-zoom, Fullbright, the Insert menu, and toggleable No Attack Cooldown for private singleplayer worlds.

Install in Prism Launcher

1. Close the Minecraft instance.
2. Use a Minecraft 26.2 instance with Fabric Loader 0.19.5+, Java 25, and Fabric API 0.161.0+26.2.
3. Replace the old Lumen JAR in that instance's minecraft/mods folder with lumen-java-1.0.0-beta.3-mc26.2.jar. Keep only one Lumen JAR in the instance.
4. Start the game and press Insert.

Controls: X toggles Xray, hold C to zoom, B toggles Fullbright. No Attack Cooldown is available under Insert → Features, defaults OFF, and affects full melee recharge strength only in your private singleplayer world. Target damage immunity still applies.

Validation

• All 11 unit tests passed.
• Full automated tests in an actual Minecraft 26.2 client passed, covering marker rendering, filtering, menus/mouse controls, zoom and brightness restoration, settings persistence, and leaving/reopening the test world.
• Actual integrated-server attack damage was verified: full-strength attacks with the combat toggle ON and normal recharge restored with it OFF.
• The full game test also passed with Iris 1.11.4, Sodium 0.9.2, and Complementary Reimagined r5.9.3, including shaders OFF/ON during play.

This remains a beta. Tests used Windows/OpenGL; Vulkan, other shader packs and complete modpacks require separate testing. A shader pack's own lighting can override the Fullbright effect. Personal Minecraft profiles and worlds were not changed during testing.

The Minecraft 26.3 beta 3 remains a separate download. The 26.2 source is maintained on support/mc-26.2. See TESTING.md for details.

Assets include the installable JAR, complete buildable source ZIP, and SHA-256 checksums. The source ZIP is for developers; do not install it as a mod.