2 commits

Author	SHA1	Message	Date
Dane Springmeyer	ce948e20e7	improve png comparison tests	2014-06-11 22:43:36 -07:00
Dane Springmeyer	3a9dd7724f	add tests and reference images (created at 211b102ec5) for ensuring consistent output of png encoding - refs #1557	2012-11-08 18:51:34 -05:00