use log2(scale) to compute mip level
authorreed <reed@google.com>
Fri, 16 Jan 2015 15:18:10 +0000 (07:18 -0800)
committerCommit bot <commit-bot@chromium.org>
Fri, 16 Jan 2015 15:18:10 +0000 (07:18 -0800)
commit15fd47f8a07615a7f5d78581aee4c80ff9f17fd9
tree705f38c1a3f53b5a6d0e6e02defdac7df9246978
parent45fa447460f70ec21d22cf4e1531490acfd3c578
use log2(scale) to compute mip level

BUG=skia:

Review URL: https://codereview.chromium.org/849333002
expectations/gm/ignored-tests.txt
include/core/SkFloatingPoint.h
include/core/SkScalar.h
src/core/SkMipMap.cpp