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1. Lumen, volumetric fog and flashlights.

   

   Topic by GlowingPotato · Dec 2022 · Home› Unreal Engine

   Hi! My scene consists of a dark environment, a flashlight and fog. pretty clichê. I’m using lumen for lightning. My issue is, when the flashlight is on, is has a nice effect on the fog, but it has a light trail when I move it around, I guess this is because of lumen update speed. I know I can up the lumen update speed in…

2. Re: Lumen, volumetric fog and flashlights.

   

   Reply by GlowingPotato · Jan 2023 · Home› Unreal Engine

   Well. turns out this is a limitation of Unreal. They use a heavy temporal filter to smooth out the fog. but its really bad with moving lights. WE can turn this filter off, but other stuff will break. I managed to do what I want by tweaking the volumetric gain of the light and its intensity. So, kinda solved.