Download Complementary Shaders Zip -

Navigate to → Video Settings → Shader Packs (or "Shaders" in OptiFine). Click the Open Shader Pack Folder button.

: A long-standing alternative. Download the version matching your game from optifine.net . Download Complementary Shaders zip

: Often offers better performance and mod compatibility. Download the installer from the Iris Shaders website. Navigate to → Video Settings → Shader Packs

using the new loader profile (Iris or OptiFine) in your launcher. Download Complementary Shaders zip