Originally posted by

**NilsonLima**View PostDeferredLightUniforms.SpotAngles.x is cos(OuterCone).

So equation is:

cos(OuterCone) / sqrt(1.0 - cos(OuterCone)^2) which simplifies to cot(x) when x is positive. Cot(x) is 1 / Tan(X) which is standard perspective correction scale term. I don't see any reason why 0.5 is there.

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