How to measure luminance or brightness?

[kAzAAkAs]

@mittense;716745

You can create a post-process material where you sample luminosity per-pixel to determine brightness of the overall scene; I have a few varying methods of doing that through material functions in our repo: https://github.com/joymachinegames/joymachine-public/tree/master/ue4/materials/functions

I’ve tried fiddling around with the luminance uassets that you references, but I’m still not quite sure how to capture incoming light (very inexperienced with materials, unfortunately). How would I apply the material function that you posted in this case?