As a test, I rendered
the image with
QMC GI instead of
irradiance map for
first bounce. QMC
GI is not an ap-
proximate method like IR map with
its undersampling
algorithm. QMC GI
calculates the GI
without compromise,
every light sample
gets equal attention.
So it’s a good test to
compare how well
the GI with IR map is
computed.