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EyeAdaptation material node

In material editor is a node called EyeAdaptation with one output and no input. What actually is this output?

Product Version: UE 4.13
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asked Jan 05 '17 at 11:55 PM in Rendering

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PanDenat
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Its related to https://docs.unrealengine.com/latest/INT/Engine/Rendering/PostProcessEffects/AutomaticExposure/ the ue4 eye adaptation. with this node you can make materials react to the auto exposure.

I havent used it myself though, so I dont know what value's it outputs.

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answered Jan 06 '17 at 01:10 PM

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Luos
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avatar image Luos Jan 17 '17 at 11:27 PM

apparently it outputs whatever value eyeadaptation is outputting. so if the eye adaptation makes thigns darker, it outputs close to 0, but if it makes stuff EXTREMELY bright, it can hit 64+

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