Bug#723067: Vertical gradient on element with height >64k pixels causes page to stop scrolling/rerendering

[Dirk Griesbach]

Am Do, 19. Sep 2013 um 18:38:37 +0200 schrieb Dirk Griesbach:
> I tested Iceweasel 24.0-2, 23.0.1-1 and 17.0.8esr-2, all show this
> behaviour (Debian/sid). However, stock Firefox 24.0 is not affected. It
> scrolls and shows the page without problem.

... which is only partly correct. Stock Firefox 24 and 25 both show the
gradient and scroll temp.html but also show the solid colors and
mis-rendering Josh mentioned.

Now, Iceweasel 25 doesn't show any gradient or color at all. However, it
scrolls the whole page without a problem.  

This all happens with a Intel GMA950 with SNA acceleration enabled. If I
disable SNA so the default UXA is used, Iceweasel 25 will draw a
gradient with about a tenth of the size the gradient in stock Firefox.
At least it scrolls the page correctly and does not produce additional
solid lines and other mis-rendering like stock Firefox does. Changing
acceleration methods does not seem to have an impact on stock Firefox in
this regard.

Dirk