Thanks for your help! This worked for me.
2009/7/11 Tom Jaeger <thjae...@gmail.com> > ** Description changed: > > [Problem] > - Scaled images in Firefox, Opera, etc. look blurred or pixelated when > zoomed. > + Upscaled images in Firefox (and Opera) look pixelated when zoomed, edges > appear jagged. > > [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 using > a client-side fall back which is deemed too slow by the firefox developers. > > 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. Once this is done, cairo's client-side workaround can be > removed and firefox can be updated to use EXTEND_PAD. > > The proposed fixes are available (for jaunty and karmic) in the > firefox-smooth-scaling PPA: > > https://launchpad.net/~firefox-smooth-scaling/+archive/ppa<https://launchpad.net/%7Efirefox-smooth-scaling/+archive/ppa> > > [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 direct subscriber > of a duplicate bug. > > Status in The Mozilla Firefox Browser: Confirmed > Status in Libpixman: Fix Released > Status in openchrome: Fix Released > Status in Opera Browser: New > Status in xf86-video-ati: Fix Released > Status in xf86-video-mga: Fix Released > Status in xf86-video-radeonhd: Fix Released > Status in X.Org X server: Invalid > Status in XUL + XPCOM application runner: In Progress > Status in “cairo” package in Ubuntu: Fix Released > Status in “firefox” package in Ubuntu: Invalid > Status in “firefox-3.0” package in Ubuntu: Invalid > Status in “pixman” package in Ubuntu: Fix Released > Status in “xorg-server” package in Ubuntu: Invalid > Status in “xserver-xorg-video-ati” package in Ubuntu: Fix Released > Status in “xserver-xorg-video-i128” package in Ubuntu: Fix Released > Status in “xserver-xorg-video-mga” package in Ubuntu: Fix Released > Status in “xserver-xorg-video-openchrome” package in Ubuntu: Fix Released > Status in “xserver-xorg-video-radeonhd” package in Ubuntu: Fix Released > Status in “xulrunner-1.9” package in Ubuntu: Triaged > Status in “xulrunner-1.9.1” package in Ubuntu: Triaged > Status in openSUSE: Confirmed > > Bug description: > [Problem] > Upscaled images in Firefox (and Opera) look pixelated when zoomed, edges > appear jagged. > > [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 using > a client-side fall back which is deemed too slow by the firefox developers. > > 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. Once this is done, cairo's client-side workaround can be > removed and firefox can be updated to use EXTEND_PAD. > > The proposed fixes are available (for jaunty and karmic) in the > firefox-smooth-scaling PPA: > https://launchpad.net/~firefox-smooth-scaling/+archive/ppa<https://launchpad.net/%7Efirefox-smooth-scaling/+archive/ppa> > > [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. > -- The Tao has no agenda. So at the end of the day, everything is done. The man that lives in this lives in a peaceful and harmonious home. -- 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-X, which is subscribed to xserver-xorg-video-mga in ubuntu. _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
