DarkEdge opened this issue on Aug 09, 2009 · 37 posts
pjz99 posted Mon, 10 August 2009 at 2:36 PM
They may do very similar things, but they aren't exactly the same in this context. Ambient light emitted by some environment sphere will be occluded (create a shadow) by intervening surfaces, while IBL with shadows off will not - the IBL light will pass right through AND be bounced by indirect lighting (which is always going to be wrong).