Bug#593844: iceweasel: Microsoft Psychedelic Browsing test doesn't work

Mike Hommey mh at glandium.org
Tue Aug 24 13:18:16 UTC 2010


On Tue, Aug 24, 2010 at 02:57:01PM +0200, Mike Hommey wrote:
> On Sun, Aug 22, 2010 at 01:13:52PM +0200, Mike Hommey wrote:
> > On Sat, Aug 21, 2010 at 04:31:49PM +0200, Vincent Lefevre wrote:
> > > Package: iceweasel
> > > Version: 3.5.11-1
> > > Severity: normal
> > > 
> > > The test
> > > 
> > >   http://ie.microsoft.com/testdrive/Performance/PsychedelicBrowsing/
> > > 
> > > doesn't work: when I click on "Find Out", the text disappears, but
> > > then the window remains blank (with only "Return to Test Drive Demos"
> > > at the top right). The wheel should appear, but it doesn't.
> > > 
> > > I have no such problem with
> > >   _ Chromium browser (Debian's chromium-browser package) on the same
> > >     machine,
> > >   _ Firefox 3.6.8 under Mac OS X.
> > > 
> > > I don't really want to test the experimental version.
> > 
> > It works if I rebuild xulrunner with the embedded cairo version.
> > Interestingly, it doesn't if I upgrade cairo to the version in
> > experimental. Either compiling vs. cairo 1.9.x changes something or one
> > of the patches applied by mozilla fixes something.
> 
> I found which patch in the mozilla codebase makes it work[1].
> 
> According to the corresponding bug[2], there are various other cases
> that this patch fixes.
> 
> This is a shared issue between cairo and the mozilla codebase. It looks
> like the mozilla codebase shouldn't be using 0x0 matrices, but does.
> OTOH, it looks like the fix is much easier on cairo's end.

And looking more thoroughly, actually pretty sensible...

Mike





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