ref: d3e9409bb07e6411ff867935883bd5d56d2f9041
parent: 0cdfef1e227206dc0f6ec3cf2a529dd63e271121
parent: 0822a62f4051289fb3853c997b797ae3b6a006f5
author: Yunqing Wang <yunqingwang@google.com>
date: Fri Jan 21 06:07:17 EST 2011
Merge "Modify sub-pixel filters to eliminate unnecessary calculations"