I can't see an option that allows to change image parameters (brightness / contrast) in "Full Screen 3D" mode.
It's present in previous driver versions, for example in Catalyst v14.4 for Windows XP.
Please see attached screenshot.
New driver versions for Windows 7 / 8 / 10 don't have this option.
I have some questions:
1. Is there a program that allows to change brightness / contrast level of an image in Full Screen 3D mode?
2. Probably there are some undocumented features that may change these parameters via Windows registry editing?