Thorsten,
Here is what I see for optics.pov :
41.4% ==> gatherPhotonsRec
21.1% ==> sqrt
17.9% ==> counting routine for profiling
5.6% ==> fixDown
2.6% ==> fixUp
2.2% ==> more profiling overhead
2.1% ==> scattering_attenuation
1.5% ==> photonRgbe2colour
1.1% ==> PQDelMax
The rest is all below 1%
Bill P.
