For 1.8.9 players (common in PvP communities), these shaders are often used with to maximize FPS while keeping the game looking "modern". Customization:

: Known for being one of the fastest shaders available for "potato" computers.

out vec4 frag_color;

Since the exact file likely doesn't exist, here are three real shader packs that achieve the goal of "Potato Shaders 189 Extra Quality."

Dynamic movement for grass, leaves, and crops.