pioneerspacesim/pioneer — pull request #1300 by Luomu (2012-06-22 21:32:04+00:00)
Title: Fade stars at daytime

Fades the space background according to the atmospheric density and light angle. It doesn't try to be scientifically accurate or anything, just something that looks good enough. GL2 only, although it wouldn't be impossible to implement with the legacy renderer (fade the ambient light color or something).