Ubuntu
firefox-3.0 package

  1. Bug #217908
  2. Comment #100

Comment 100 for bug 217908

Revision history for this message
Tom Jaeger (thjaeger) wrote : Re: Images in Firefox and Opera are extremely pixeled when zoomed

Okay, so it turns out that the reason for these fallbacks is that some drivers implement certain Xrender operations incorrectly (see this thread for details: http://lists.cairographics.org/archives/cairo/2009-January/016320.html). One such case is the opensource radeon driver, the intel driver is apparently find (at least on i965). It's trivial to patch broken drivers to use a server-side software fallback instead, which doesn't cause nearly as much of performance hit as the client-side fallback that we would have right now. It'd be nice to get a few more data-points (especially from users of the closed-source ati and nvidia drivers, as we can't patch those).

A test that would be helpful to run is attached to the following mailing list post:
http://lists.freedesktop.org/archives/xorg/2008-February/032973.html
For your convenience, I'm also attaching an i686 binary. Use 'chmod +x repeat-test_i686 && ./repeat-test_i686' to run it.