i'm need to use glsl effect
Of course you want
. But what kind of effect do you want to implement? Do you want to add a new implementation for one of the existing effects? Or do you want a completely new type of effect.
oh, and question, how about use cg shaders, the jogl uses Cg...is this possible?, to include it into effect
Well, Jogl may have support for Cg shaders. But it doesn't "use" them. Xith3D doesn't currently have an integratin for Cg. But GLSL should perfectly suit your needs. If you still want Cg, you may want to implement an integration for it and Xith.