LightFX 1.0 beta for neoforge 1.21.1 is a beta file of the Minecraft shader LightFX, made for Minecraft 1.21.1. It was published on August 25, 2026 and is 0 MB in size. Pre-release builds can contain bugs — back up your world before installing. For the full description, screenshots and every other version, visit the LightFX shader page.
How to install: Put the .zip into .minecraft/shaderpacks (do not extract it) and select it under Options → Video Settings → Shader Packs. Needs Iris or OptiFine.
