Sergey Sharybin
a3c13fa9e8
BSDF sampler function shouldn't give labels it's not intended to do. That said reflection shouldn't give transmission ray and transmission give reflection ray. Added an assert in the transmission sampling but reflection still needs some investigation because even after recent fixes the check for projection onto the reflected ray could give both positive and negative values. It shouldn't have any affect on renders just makes internal logic consistent and unleashes an issue to be investigate further.