RtColorPicker snaps to pixels

[ro0mquy]

With Luftanhalten mode it should be able to select colors more precise than the pixel width

[phistep]

As discussed I think is already the case

[ro0mquy]

No, it is not. During colorgrading this can be clearly seen. When I try to change the luminance for the lift uniform the changes are only occuring stepwise. Looking at the waveform scope makes this obvious.