add sin

enough to try out

    color.rgb = color.rgb + a*(sin(6.28*color.rgb)*0.159);

Change-Id: I45dbabb7f2a58aeebac4a651ed45b28ea90f9dd6
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/286059
Commit-Queue: Mike Klein <mtklein@google.com>
Commit-Queue: Mike Reed <reed@google.com>
Commit-Queue: Florin Malita <fmalita@chromium.org>
Auto-Submit: Mike Klein <mtklein@google.com>
Reviewed-by: Mike Reed <reed@google.com>
Reviewed-by: Florin Malita <fmalita@chromium.org>
1 file changed