FYI what you are asking for is not really possible so I have closed this request. You cannot disable select post process effects for select pixels on the screen nicely. Post Process affects the entire screen. Our plan is to allow 3D widgets to render after post process because it is unlikely you want any of the post effects to be applied to widgets. Please keep in mind that 3D widget drawing is experimental because we do not feel it is up to quality bar yet. This post processing issue is one of those reasons.