829712 - slow scrolling on littlebigplanet.com

Status: RESOLVED WONTFIX

(Core :: Graphics: Layers, defect)

Description

[marco_pal]

The scrolling on littlebigplanet.com lags very bad. The problem resides on the box-shadow property applied on the body I think. If with the developer I disable the property, firefox stops lagging. It lags on the current Firefox 18 and the nightly, smooth scrolling on/off and with D2D accell on/off. On chrome,IE9 and opera it works very smoothly. Maybe firefox render continously the shadow...

Comment 1

[Alice0775 White]

Confirmed the problem in Firefox3.5-Nightly21.0a1.

And also confirmed the following xss helps:

body {
box-shadow: none !important;
-moz-box-shadow: none !important;
}

Comment 2

[Alice0775 White]

Regression window:
Good:
http://hg.mozilla.org/mozilla-central/rev/5f349409c9d5
Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US; rv:1.9.2a1pre) Gecko/20090209 Firefox/3.2a1pre ID:20090209105101
Bad:
http://hg.mozilla.org/mozilla-central/rev/2681688f4cdf
Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US; rv:1.9.2a1pre) Gecko/20090210 Firefox/3.2a1pre ID:20090210050102
Pushlog:
http://hg.mozilla.org/mozilla-central/pushloghtml?fromchange=5f349409c9d5&tochange=2681688f4cdf


Suspected : Bug 476738