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authorPřemysl Eric Janouch <p@janouch.name>2021-06-15 04:35:41 +0200
committerPřemysl Eric Janouch <p@janouch.name>2021-06-15 07:09:23 +0200
commitb4dd0052ffc60fbd642729a3e05bcadbd6edd6e1 (patch)
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parente3c47c33fa3a1fb9412198413962ac35f4483240 (diff)
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degesch: pick colours based on relative luminance
Replaces the inaccurate Rec. 709 luma we used to use before. This is the first feature here that requires libm, which doesn't seem to be a particularly great sacrifice. Moreover, I've rectified that the input isn't linear in sRGB, and then was even normalized wrong for the luma formula.
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