Shaders will not work on standard Minecraft. You need a mod that handles the lighting engine.
: Light beams that filter through trees and water (godrays). shildurs shaders
: These revamp the entire lighting system, adding heavy effects like godrays, lens flares, and realistic shadows. Shaders will not work on standard Minecraft
(Note: If you meant by Capt Tatsu, you can find those here: BSL Shaders Download ) adding heavy effects like godrays