OptiFine is a mod that gives total graphical access to the players, and in our case, allows them to use shaders in the game. You can only use shaders after you install OptiFine in Minecraft 1.18.2. How to Install Shaders in Minecraft 1.18.2 Acid – Best Effect-Based Shaders for Minecraft 1.18.2.YoFPS – Best Low-end Shaders for Minecraft 1.18.2.List of Best Shaders for Minecraft 1.18.2.How to Enable Shaders in Minecraft 1.18.2.How to Install Shaders in Minecraft 1.18.2.