clipka <ano### [at] anonymousorg> wrote:
> Am 05.12.2016 um 17:14 schrieb omniverse:
>
> > A test of 2 spheres, rgb 1 and rgb 0 both with emission -1, caused only a
> > darkened area for the white (now black) sphere on a white plane.
> > Black sphere with emission -1 made no change to the white plane below it.
> >
> > I take from this that color > 0 is required for emission to do anything. This in
> > turn makes me think there should be some way to get a black or dark object to
> > enhance the darkness around it.
>
> Try positive emission with a negative pigment ;)

Except that wouldn't allow for a dark, yet positive value, color to likewise
darken its surroundings.

Of course, the more I think it over I don't know how much this would be
deviating from real world. Something I haven't checked into.

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