[Searching] Realtime Glass Shader

Hey guys!
I tried to make some nice glass effects with the built-in shaders, but the only thing I found was environmental glass shaders, which isnt a real good thing.
I'd like to see something like "normal" transoarent (realtime) glass bumpmapping, but since Im a noob in shaders idk how to achieve this.
Could someone make/transform a good shader please?
Thanks in advance!

EDIT: Something like this

Those are raytracing effects, not doable with any acceptable performance in games. consider using projective mapping of precomputed glass lighting effects

Thanks, but I dont want the light effects, just the glass itself (refraxtions etc)
I doesnt have to have that awesome quality, just something similar
This should be doable with 3DGS