Adam Jackson 35f21c5bc0 cogl: Stop using glAlphaFunc in big-GL
We're always running through the GLSL pipeline so the fixed-function
alpha test is never invoked. This change does not yet remove the
alpha-test feture bit from the context because this bit of uniform
handling is going to be simplified in a future commit.

https://gitlab.gnome.org/GNOME/mutter/merge_requests/995
2020-01-16 18:38:20 +00:00
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