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Lower sin and cos using Nick's fast sin/cos approximation from https://web.archive.org/web/20180105155939/http://forum.devmaster.net/t/fast-and-accurate-sine-cosine/9648 It's suitable for GLES2, but it throws warnings in dEQP GLES3 precision tests. Reviewed-by: Connor Abbott <cwabbott0@gmail.com> Reviewed-by: Qiang Yu <yuq825@gmail.com> Tested-by: Qiang Yu <yuq825@gmail.com> Reviewed-by: Christian Gmeiner <christian.gmeiner@gmail.com> Signed-off-by: Vasily Khoruzhick <anarsoul@gmail.com>
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