** Summary changed: - Images in Firefox and Opera are extremely pixeled when zoomed + Pixellated Images in Firefox/Opera due to incorrect EXTEND_PAD implementation in several video drivers
** Description changed: - Binary package hint: firefox-3.0 + [Problem] + Scaled images in Firefox, Opera, etc. look blurred or pixelated when zoomed. + [Discussion] + This is because firefox is using nearest-neighbor interpolation for upscaling. It would look better if bilinear filtering were used by Cairo, which requires EXTEND_PAD. However, EXTEND_PAD is not implemented very well in several video drivers, and Cairo is unable to distinguish drivers that have good implementations from ones with bad ones, so it is currently falling back to defaulting to not use it at all. + + Solving this requires updating each video driver to either implement + EXTEND_PAD correctly or at least stop advertising it can do it when it + really can't. + + [Original Report] With Ubuntu Hardy beta + latest updates (15th April 2008) I suffer from bad image rendering quality in Firefox. To see the type of problem just open the attached screenshot and scale to 100%. The images that are blurred are razor sharp if I do a right click -> view image so it is perhaps a problem related to image scaling. The problem appears only with my laptop - so perhaps it is not a bug in Firefox but elsewhere (X-windows??/intel-driver??). The laptop has a 3-year old Centrino-Platform uses 915 intel driver and has a lcd monitor with 1400x1050 resolution. The rendering problem appears independent of the Desktop-Effects are on/off. So it does not seem to be a problem with compiz. p.s. Also the text in the Gnome-terminal is somewhat blurred (compared with e.g. text in Gedit) p.s. The same homepage renders nicely on my desktop computer with a 1280x1045 and the ati-driver. Don't hesitate to ask for more information. -- Pixellated Images in Firefox/Opera due to incorrect EXTEND_PAD implementation in several video drivers https://bugs.launchpad.net/bugs/217908 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs