If you post a photo of what you want this to look like it will be easier to advise.
here’s a test of glass with some slight ripple:
i’m trying to mimic this effect:
but it’s too uniform, because i’m just tiling the bump map so it’s the same on each piece of glass. if you really want to do it right you’d have to create a non-tiled map where the bump is different on each pane. i didn’t use noise, just an image. here’s the vismat with images:
clear_glass panes refl back.zip (4.44 MB)