Ok, so i have been out of the loop for quite a while about JKA's source code release, so you will have to bear with me. I am guessing this is a kind of post processing shader system, similar to the GLSL shaders for Minecraft? In which case, would setting one of these shaders in your shaders file (presumably) for a map then render that map unplayable in Base JKA? Or are these parameters simply an addition to the default shader which causes these new shaders to override the default ones when this shader system is installed in JKA? Again, i'm really not up to speed on all this so forgive me!