CommonFilter applied to children of aspect2d


I have been trying to apply a filter to my entire screen (UI, 2D, 3D) and to get all HUD stuff filtered I have to use base.cam2d for anything in render2d to be affected.

If I understand this correctly, I am doing 2 extra fullscreen passes (one for, one for base.cam2d) to filter the final image, is there another way of doing this in a single pass?


ps. the filter is to simulate colour blind vision (useful for games, but in my case for perceptual studies)