I don't understand what's happening here. If I use the default "Glass Clear RT" texture it renders with a milky-white cast.   Upping the transmission value in the 'transparency' shader from the default 95% to 99% seems to make it more white and less transparent.   Reducing that value seems to make it more transparent, as in you can see more of what's behind, but it's darkened.   I just want some glass that is nearly completely transparent!   What's going on? I've attached the VW file.   transparency.vwx