tree a3eedb1801e401fac76f852e3e9b4ed7d926c251
parent 08fa28cd31c96b4ebd9cb532539c3a8c88803d90
author pavel <pavel@cs.unc.edu> 1414095530 -0700
committer Commit bot <commit-bot@chromium.org> 1414095530 -0700

Add utils to better quantize grayscale values to three bit indices while
compressing coverage masks.

Signed-off-by: Pavel Krajcevski <pavel@cs.unc.edu>

BUG=skia:

Review URL: https://codereview.chromium.org/669243003