Shaders Mod 1.8.1 -

For Minecraft version 1.8.1, there is no official, stable release of the standalone Shaders Mod. To use shaders in this version, you should use the of the GLSL Shaders Mod or, ideally, use OptiFine , which eventually integrated shader support directly. Installation Guide for Minecraft 1.8.1

The mod itself only provides the "engine"; you need a "pack" for the actual visuals. How To Install Minecraft Shaders For 1.8 (Step by Step) Shaders Mod 1.8.1

: Download OptiFine HD for 1.8. Place the .jar file into your .minecraft/mods folder. This provides the necessary "Shaders" button in your video settings. For Minecraft version 1

Since 1.8.1 was a transitional version, the most reliable way to get shaders working is through a Forge-based setup: For Minecraft version 1.8.1