Optimize QuadF's IsCounterClockwise function
IsCounterClockwise is a busy function,See performance and discussion:
https://groups.google.com/a/chromium.org/forum/#!topic/graphics-dev/aSvAbzcgbos
This patch reduce IsCounterClockwise() from 8mul+3add+4sub to 4mul+2add+2sub,
and performance doubled in real micro-bench.
R=danakj@chromium.org
Review URL: https://codereview.chromium.org/458113002
Cr-Commit-Position: refs/heads/master@{#289138}
git-svn-id: svn://svn.chromium.org/chrome/trunk/src@289138 0039d316-1c4b-4281-b951-d872f2087c98
CrOS-Libchrome-Original-Commit: f92aa3f31fbee2d5905a39a1ab100e82ade69dde
1 file changed