If your scene has fog, don't expect the material settings "Direct illumination multiplier" and "indirect illumination multiplier" to work.
My test-scene as rendered below, has the default material with Direct + Indirect multiplier set to ZERO. So we should expect a completely unlit material = black
Regardless of fog being enabled or not shouldn't the material always render as pitch black?
The scene has linear fog. Start-end set to 500-1200m, so it is somewhere out in the distance. Fog color is set to bright red, so it is easy to see that it is not visible in the scene.
Whats up with this?