Romain Guy mentions that Android 4.4 / 5.0 introduced automatic redundancy elimination (see http://www.curious-creature.com/2015/03/25/android-performance-case-study-follow-up/comment- page-1 / # comment-52600 ), but I could not find the documentation or negotiations with a link to it. Does anyone know any details?
I found the code that does this and tested it with Romain Guy: http://www.curious-creature.com/2015/03/25/android-performance-case-study-follow-up/comment-page-1 / # comment-52608
Basically, it is just good at removing a full-screen background. See the related code to see how it works.