Bug 176775 - [GTK][Wayland] Flickering when entering accelerating compositing mode
Summary: [GTK][Wayland] Flickering when entering accelerating compositing mode
Status: NEW
Alias: None
Product: WebKit
Classification: Unclassified
Component: WebKitGTK (show other bugs)
Version: WebKit Nightly Build
Hardware: Unspecified Unspecified
: P2 Normal
Assignee: Nobody
URL:
Keywords: Gtk
Depends on:
Blocks:
 
Reported: 2017-09-12 03:05 PDT by Carlos Garcia Campos
Modified: 2017-09-12 03:05 PDT (History)
3 users (show)

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Description Carlos Garcia Campos 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.