From: Mikko Rasa <tdb@tdb.fi>
Date: Fri, 8 Oct 2021 06:16:41 +0000 (+0300)
Subject: Add a shadowing term from the planet to atmospheric transmittance
X-Git-Url: http://git.tdb.fi/?a=commitdiff_plain;h=a5f76ec38d682108e8c655a25b32b88e19bd8783;hp=a5f76ec38d682108e8c655a25b32b88e19bd8783;p=libs%2Fgl.git

Add a shadowing term from the planet to atmospheric transmittance

This makes the sky properly dark if the sun is below the horizon.
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