typo in computing shadow accumulation

Hi guys,

Going over the code we assume that intention was to compute: #fibers = distance / (strand radius + spacing between strands) but due to a typo used multiplication instead of addition.

Was that indeed a typo or intentional?

TressFX/src/Shaders/TressFXLighting.hlsl

Line 196 in ba0bdac

    
           float numFibers = fDepthDistanceWS / (fFiberSpacing * fFiberRadius);	// fiberSpacing + fiberRadius is total distance from 1 fiber to another