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2 commits

Author SHA1 Message Date
Matthew Waters
6f04c3ac87 glalpha: fix compilation with msvc
It doesn't define M_PI
2018-06-07 14:23:55 +10:00
Matthew Waters
af5b0ee7d0 gl: add glalpha element that is similar to the alpha element
It performs similarly to the existing alpha element however performs
calculations in floating point rather than with small (guint8) integers
so some differences are to be expected.

https://bugzilla.gnome.org/show_bug.cgi?id=794070
2018-05-05 21:24:25 +10:00