Georges Basile Stavracas Neto 925809ea75 clutter/blur: Pass direction as vec2
Yet another way to reduce the instruction count of the fragment
shader. Passing a pair of floats once is virtually free, compared
to computing horizontal and vertical on each fragment run.

Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1646>
2020-12-17 13:21:50 +00:00
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