I wonder if taking the square root of the color inverts the original color. I al... | Hacker News

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duncan-donuts on Feb 3, 2017 | parent | context | favorite | on: Breakdown of a Simple Ray Tracer

I wonder if taking the square root of the color inverts the original color. I also wonder why he is taking the square root and don't know why.

Keyframe on Feb 3, 2017 | [–]

Nah, you'd subtract your color from white in order to get negative. This would diminish original. Sqrt is there for poorman's gamma.

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