I'm getting some odd results using the trans33 brush property and I wondered if these are expected results or something we might consider working on in the future.
I'm using a grey texture, roughly even between white and black, because I noticed that very white transparent windows tend to brighten everything that is viewed behind them. However, while it does neutralize the adjustment in some cases, it still seems to be brightening certain spectrums.
Also, I've found that if a shadow is cast on a window pane, everything you view behind it will be darker. If you view the same thing through a window pane that isn't in shadow, it will appear brighter. A bright object behind a window pane, even if the surface of the pane is itself in shadow, ought to be bright.
Here are some screenshots showing what I'm talking about. I doubt this is a huge problem, but it can be a bit off-putting to see walls go light and dark as the camera moves around.
