Basic setup: A subdivided ground plane intersects
a half sphere 'skydome'
Dome object attributes have shadowcasting off.
Inside the dome and above the plane is a camera, and
a cube named 'Francis.'
That's it. No 'normal' lights or other objects present.
GI enabled, environment lighting only.
Here, GI and skydome surface share the same image:
So... what do you think?
Does the GI 'ignore' the non-shadowcasting skydome or
not?
Download the scene file and try it out here. (3.9 mb tS 7.6 format scene file)