this post was submitted on 05 Dec 2024
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A Valve engineer fixed 3D lighting so hard he had to tell all the graphics card manufacturers their math was wrong, and the reaction was: 'I hate you' (www.pcgamer.com)
submitted 2 weeks ago by alessandro@lemmy.ca to c/pcgaming@lemmy.ca
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[โ€“] gazter@aussie.zone 21 points 2 weeks ago (1 children)

Made harder by brightness being perceived non - linearly. We can detect a change in brightness much easier in a dark area than a light- if the RGB value is 10%, and shifts to 15%, we'll notice it. But if it's 80% and shifts to 85%, we probably won't.

[โ€“] kyle@lemm.ee 9 points 2 weeks ago

Reminds me of a video I watched where they tested human perception of 60/90/120 FPS. They had an all white screen and flashed a single frame of black at various frame rates, and participants would press a button if they saw the change. Then repeated for an all black screen and a single frame of white would flash.

At 60 and 90 FPS, most participants saw the flash. At 120 FPS, they only saw the change going from black to white.