ZDoom

I expect this will be answered with a pretty quick "no" but, as per the title, I was wondering if a camera texture can be given an effect like the enhanced GZDoom night vision effect (green colour with inverted palette enemies).

I had an idea of being able to have infra-red cameras that can "see" in a dark room and display the result on a monitor (camera texture).

Can it be done?

I don't know about that specific nightvision effect (probably not since the inverted monsters are a hardcoded effect) but I know you can generally apply shaders to camera textures and/or use camera textures as inputs for shaders. So in theory you could use something like my realistic nightvision shader as a texture shader for a camera texture. I played around with this once and made it work for Hideous Destructor, but unfortunately didn't save the proof of concept.
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Thanks, that would do the job nicely actually. I'll check it out.