kivy/kivy — pull request #2661 by inclement (2014-11-09 20:54:32+00:00)
Title: Sdl2 screenshot implemented with glReadPixels

Not for merging!

I implemented this a while ago, and made the pr for easy reference. This code doesn't quite work, because the flipVert function doesn't flip the texture properly - there's an offest or something, and you get a slant instead. It's probably a small fix, and it works otherwise.