Minecraft 1.12 2 Shaders Fix Here
If using the CurseForge App , you can manage these profiles directly through their interface. Common Issues
For Minecraft version 1.12.2, . OptiFine has taken over shader support for Minecraft, making it the most reliable and compatible tool for the job. You don't need any other mods like GLSL Shaders Mod for this version. minecraft 1.12 2 shaders