The full set of event.LifecycleStages are now plumbed through.
More user control over the window, in particular it:
- takes focus correctly on start
- can now be closed and minimized
- can be hidden (allowing testing of LifecycleStageAlive)
Flickering during resize has been eliminated by triggering draws from
a second thread. This encouraged the introduction of a dedicated draw
loop in Go, which makes responsibility for GL calls a little more
like android/x11.
Change-Id: I63982f20bd4859601e2a27915f60f6c8083a176f
Reviewed-on: https://go-review.googlesource.com/11733
Reviewed-by: Nigel Tao <nigeltao@golang.org>
ddd9618c5b