Cubic, not spherical light map in IBL tutorial

Hi there
I've just realised that the picture in the IBL tutorial of the rendering with
the beach_probe.hdr is done using a cubic light map

!genbox light_probe ibl_environment 500 500 500 -i | xform -t -250 -18 -250
this is the same line as in Rendering with Natural Light

and therefore it's not done with the spherical map as stated in the tutorial

light_probe source ibl_environment
4 0 1 0 360
as I get arendering which is all fuzzy and incorrect

Relating to my last message, still wonder where the 0.159154943 value comes from



Tarik Rahman
PhD student, Institute of Perception, Action and Behaviour
School of Informatics
University of Edinburgh