GLSL Shaders Mod 1.7.1 For Minecraft 1.7.1/1.7.2 Download and install the Minecraft Forge mod and the Optifine mod for Minecraft 1.7.1/1.7.2 Download the GLSL Shaders mod zip file of your choice, for Minecraft 1.7.1/1.7.2 Browse to %appdata%/roaming/.minecraft/bin and open your Minecraft.jar. Drag the files from the downloaded “shadermod” folder into your Minecraft.jar. Finished. Download GLSL