NEW 176775
[GTK][Wayland] Flickering when entering accelerating compositing mode 
https://bugs.webkit.org/show_bug.cgi?id=176775
Summary [GTK][Wayland] Flickering when entering accelerating compositing mode
Carlos Garcia Campos
Reported 2017-09-12 03:05:53 PDT
This only happens in Wayland or at least it's only noticeable in Wayland. It can be reproduced easily by showing the overlay resources on a page without AC (because the overlay requires AC). In X11 you just see the overlay appear on top of the current page. In Wayland you see a black page for a while and then the whole page again with the overlay on top. It's even easier to reproduce if you run MB under valgrind just to make things slower. It seems that when entering AC we render one or two frames as full-black, then sometimes another one only with the overlay, and then we render the one with the current page contents.
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