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authorwolfbeast <mcwerewolf@gmail.com>2018-07-14 05:11:39 +0200
committerwolfbeast <mcwerewolf@gmail.com>2018-07-14 07:43:25 +0200
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Switch to Lanczos scaling from Hamming to get acceptable fast downscaling.
In visual tests we see that Hamming-1 is not as good as Lanczos-2, however it is about 40% faster, and Lanczos-2 itself is about 30% faster than Lanczos-3. The use of Hamming-1 has been deemed an unacceptable trade-off between quality and speed due to the limited pixel space it operates in, so we pick Lanczos-2 here. On modern hardware, Lanczos-2 doesn't have any noticeable impact in normal use.
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