Reply To: cycles indirect lighting question / issue

Forum Archive cycles indirect lighting question / issue Reply To: cycles indirect lighting question / issue

#44910
Joe Franks
Participant

    @indigowarrior9 Thanks for the reply. 

    Experimented a little more with turning off light sources and closing the gaps and was still seeing brighter than expected internal areas. It scales directly with the number of indirect light bounces. 

    It actually looks like it’s more related to the behavior of the principled shader.  Switching to a diffuse shader fixes it. 

    The base color of the principled material in the screenshot is a orangeish/tan but the red channel was set to a full 1.0 value, turning that even slightly down greatly improved the issue. So my guess is the full color channel is bouncing more color off the material than you would normally expect or that it isn’t reducing the intensity as it the bounces progress creating the glow effect. 

    Screen shot attached shows the difference, not a big change in the base color but a dramatic change in the bounce light behavior, kind of interesting.

    Thanks for taking a look!