922228 - 3d transformed + z-indexed "full screen" div with animated GIF as background sometimes fails to render

Status: RESOLVED FIXED

(Core :: Layout, defect)

Description

[Soledad Penades [:sole] [:spenades]]

Each time the image is tapped we should get a new "cute" image, but sometimes it fails to load (?) although the network seems to have completed its duty, and the entire screen goes blank until the image is clicked again.

online test case:
http://people.mozilla.org/~spenades/test_cases/gif_white/

It seems to happen more often when using file:/// urls, so I uploaded the whole test as a zip file: http://people.mozilla.org/~spenades/test_cases/gif_white/gif_white.zip

If I disable the z-index or the transform properties the problem goes away.

(This is extracted from a way more complex example)

Comment 1

[(mostly gone) XtC4UaLL [:xtc4uall]]

Confirmed with Mozilla/5.0 (Windows NT 6.1; WOW64; rv:28.0) Gecko/20100101 Firefox/28.0 ID:20131207030203 CSet: 42b2a2adda8f.

If I move the cursor a bit the GIF gets displayed properly with a slight delay.

Does not happen with Mozilla/5.0 (Windows NT 6.1; WOW64; rv:17.0) Gecko/20100101 Firefox/17.0 ID:20131113153432 CSet: 04f4b34ae3ae

Does happen with Mozilla/5.0 (Windows NT 6.1; WOW64; rv:24.0) Gecko/20100101 Firefox/24.0 ID:20131112155850 CSet: 3ae70b747d85

=> Regression within Firefox 17 <-> 24.

Comment 2

[Alice0775 White]

Regression window(m-c)
Good:
http://hg.mozilla.org/mozilla-central/rev/2902b3e73b92
Mozilla/5.0 (Windows NT 6.1; WOW64; rv:21.0) Gecko/20130214 Firefox/21.0 ID:20130214141230
Bad:
http://hg.mozilla.org/mozilla-central/rev/a373379d43cf
Mozilla/5.0 (Windows NT 6.1; WOW64; rv:21.0) Gecko/20130214 Firefox/21.0 ID:20130214141732

http://hg.mozilla.org/mozilla-central/pushloghtml?fromchange=2902b3e73b92&tochange=a373379d43cf



Regression window(m-i)
Good:
http://hg.mozilla.org/integration/mozilla-inbound/rev/a0928943de65
Mozilla/5.0 (Windows NT 6.1; WOW64; rv:21.0) Gecko/20130214 Firefox/21.0 ID:20130214025826
Bad:
http://hg.mozilla.org/integration/mozilla-inbound/rev/6b975147c015
Mozilla/5.0 (Windows NT 6.1; WOW64; rv:21.0) Gecko/20130214 Firefox/21.0 ID:20130214031033
Pushlog:
http://hg.mozilla.org/integration/mozilla-inbound/pushloghtml?fromchange=a0928943de65&tochange=6b975147c015

Suspected :
e941e0df729c	Robert O'Callahan — Bug 815591. Don't build nsDisplayBackgroundColor if there is no background color and we're not going to do hit-testing. r=mattwoodrow


It seems to work fine if specify the background-color css:

#cute {
background-color: black; /*any of color may ok*/
}

Comment 3

[Soledad Penades [:sole] [:spenades]]

Works today on Nightly 47 :-P