Grayscale Lightmap - Version 1.0.2 is a release file of the Minecraft shader Grayscale Lightmap, made for Minecraft 1.21.2-Snapshot, 1.21.6-snapshot, 1.21.8, 1.21.5, 1.21.4, 1.21.5-Snapshot, 1.21.6, 1.21.3, 1.21.7, 1.21.4-Snapshot, 1.21.2, 1.21.9-snapshot and more. It was published on June 27, 2026 and is 0.1 MB in size. For the full description, screenshots and every other version, visit the Grayscale Lightmap 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.