| 2008-04-15 20:53:00 |
Christian Göbel |
bug |
|
|
added bug |
| 2008-04-15 20:53:00 |
Christian Göbel |
bug |
|
|
added attachment 'Screenshot-SPIEGEL ONLINE - Nachrichten - Mozilla Firefox 3 Beta 5.png' (Firefox with blurred images) |
| 2008-04-16 20:30:43 |
Christian Göbel |
title |
Images in Firefox are blurred |
Images in Firefox are extremely pixeled when zoomed |
|
| 2008-04-17 15:33:43 |
John Vivirito |
firefox-3.0: status |
New |
Incomplete |
|
| 2008-04-17 15:33:43 |
John Vivirito |
firefox-3.0: assignee |
|
mozilla-bugs |
|
| 2008-05-28 12:48:45 |
Christian Göbel |
firefox-3.0: status |
Incomplete |
Confirmed |
|
| 2008-06-07 07:32:27 |
ubuntu_demon |
bug |
|
|
assigned to firefox |
| 2008-06-07 07:40:40 |
Bug Watch Updater |
firefox: status |
Unknown |
Invalid |
|
| 2008-06-07 07:41:36 |
ubuntu_demon |
bug |
|
|
added attachment 'lspci-nn.txt' (lspci -nn) |
| 2008-07-10 15:08:38 |
Bug Watch Updater |
firefox: status |
Unknown |
Confirmed |
|
| 2008-07-10 16:32:14 |
Sancho Panza |
bug |
|
|
assigned to opera-browser |
| 2008-07-10 16:35:07 |
Sancho Panza |
title |
Images in Firefox are extremely pixeled when zoomed |
Images in Firefox and Opera are extremely pixeled when zoomed |
|
| 2008-07-11 00:54:06 |
Sancho Panza |
bug |
|
|
assigned to libpixman |
| 2008-07-11 01:40:55 |
Sancho Panza |
libpixman: status |
New |
Fix Committed |
|
| 2008-07-11 01:41:35 |
Sancho Panza |
libpixman: status |
Fix Committed |
Confirmed |
|
| 2008-07-11 14:35:24 |
Sancho Panza |
bug |
|
|
assigned to xorg-server |
| 2008-07-11 14:35:49 |
Sancho Panza |
xorg-server: status |
New |
Confirmed |
|
| 2008-07-11 14:48:54 |
Sancho Panza |
bug |
|
|
assigned to xorg-server (Ubuntu) |
| 2008-07-11 14:49:27 |
Sancho Panza |
libpixman: status |
Confirmed |
Invalid |
|
| 2008-07-11 14:52:39 |
Sancho Panza |
bug |
|
|
assigned to pixman (Ubuntu) |
| 2008-07-11 14:55:36 |
Sancho Panza |
xorg-server: status |
New |
Confirmed |
|
| 2008-07-11 14:56:04 |
Sancho Panza |
pixman: status |
New |
Confirmed |
|
| 2008-07-11 14:56:46 |
Sancho Panza |
xorg-server: status |
Confirmed |
New |
|
| 2008-07-13 15:15:22 |
Sancho Panza |
libpixman: status |
Invalid |
New |
|
| 2008-07-21 15:08:15 |
Tran Anh Tuan |
firefox-3.0: assignee |
mozilla-bugs |
lusiads |
|
| 2008-07-22 13:00:38 |
Alexander Sack |
bug |
|
|
assigned to firefox (Ubuntu) |
| 2008-07-23 13:11:38 |
Tran Anh Tuan |
firefox-3.0: assignee |
lusiads |
|
|
| 2008-10-03 15:48:45 |
Sancho Panza |
libpixman: status |
New |
Confirmed |
|
| 2008-10-03 15:49:14 |
Sancho Panza |
xorg-server: status |
New |
Confirmed |
|
| 2008-10-11 15:41:43 |
Sancho Panza |
bug |
|
|
added attachment 'Xorg.0.log' (Xorg log file.) |
| 2008-11-24 01:51:10 |
Alexander Sack |
firefox-3.0: status |
Confirmed |
Triaged |
|
| 2008-11-24 01:51:10 |
Alexander Sack |
firefox-3.0: importance |
Undecided |
Wishlist |
|
| 2009-01-20 03:36:34 |
Tom Jaeger |
bug |
|
|
added attachment 'repeat-test_i686' (repeat-test_i686) |
| 2009-01-21 20:18:40 |
Tom Jaeger |
xorg-server: status |
Confirmed |
Invalid |
|
| 2009-01-21 20:19:06 |
Tom Jaeger |
pixman: status |
Confirmed |
Fix Released |
|
| 2009-01-21 20:19:51 |
Tom Jaeger |
firefox-3.0: status |
Triaged |
Invalid |
|
| 2009-01-21 20:20:17 |
Tom Jaeger |
xorg-server: status |
Confirmed |
Invalid |
|
| 2009-01-21 20:20:38 |
Tom Jaeger |
libpixman: status |
Confirmed |
Fix Released |
|
| 2009-01-21 20:25:56 |
Tom Jaeger |
bug |
|
|
assigned to xulrunner |
| 2009-01-21 20:28:52 |
Tom Jaeger |
bug |
|
|
assigned to xulrunner-1.9 (Ubuntu) |
| 2009-01-21 20:29:21 |
Tom Jaeger |
bug |
|
|
assigned to xulrunner-1.9.1 (Ubuntu) |
| 2009-01-21 20:29:57 |
Tom Jaeger |
bug |
|
|
assigned to xserver-xorg-video-ati (Ubuntu) |
| 2009-01-21 20:30:22 |
Tom Jaeger |
bug |
|
|
assigned to xserver-xorg-video-mga (Ubuntu) |
| 2009-01-21 20:30:55 |
Tom Jaeger |
bug |
|
|
assigned to xserver-xorg-video-i128 (Ubuntu) |
| 2009-01-21 20:31:29 |
Tom Jaeger |
bug |
|
|
assigned to xserver-xorg-video-openchrome (Ubuntu) |
| 2009-01-21 20:32:05 |
Tom Jaeger |
bug |
|
|
assigned to cairo (Ubuntu) |
| 2009-01-21 22:35:53 |
Bug Watch Updater |
xulrunner: status |
Unknown |
In Progress |
|
| 2009-01-22 20:54:21 |
Michał Gołębiowski-Owczarek |
bug |
|
|
added attachment 'repeat-test-reflect-out.png' (repeat-test-reflect-out.png) |
| 2009-01-22 20:54:44 |
Michał Gołębiowski-Owczarek |
bug |
|
|
added attachment 'repeat-test-reflect-expected.png' (repeat-test-reflect-expected.png) |
| 2009-01-22 21:19:48 |
Bryce Harrington |
xserver-xorg-video-ati: status |
New |
Confirmed |
|
| 2009-01-22 21:20:21 |
Bryce Harrington |
xserver-xorg-video-i128: status |
New |
Confirmed |
|
| 2009-01-22 21:21:55 |
Bryce Harrington |
xserver-xorg-video-mga: status |
New |
Confirmed |
|
| 2009-01-22 21:22:32 |
Bryce Harrington |
xserver-xorg-video-openchrome: status |
New |
Confirmed |
|
| 2009-01-24 00:30:41 |
Tom Jaeger |
bug |
|
|
assigned to xserver-xorg-video-radeonhd (Ubuntu) |
| 2009-01-24 01:11:34 |
Tom Jaeger |
bug |
|
|
assigned to xf86-video-ati |
| 2009-01-24 01:17:53 |
Bug Watch Updater |
xf86-video-ati: status |
Unknown |
Confirmed |
|
| 2009-01-24 01:24:23 |
Tom Jaeger |
bug |
|
|
assigned to openchrome |
| 2009-01-24 01:25:57 |
Bug Watch Updater |
openchrome: status |
Unknown |
New |
|
| 2009-01-24 18:19:46 |
Tom Jaeger |
bug |
|
|
added attachment 'xserver-xorg-video-ati.debdiff' (xserver-xorg-video-ati.debdiff) |
| 2009-01-24 18:43:22 |
Tom Jaeger |
bug |
|
|
assigned to xf86-video-radeonhd |
| 2009-01-24 21:29:02 |
Bug Watch Updater |
xf86-video-radeonhd: status |
Unknown |
Confirmed |
|
| 2009-01-25 00:35:54 |
Bug Watch Updater |
xf86-video-ati: status |
Confirmed |
Fix Released |
|
| 2009-01-27 21:50:31 |
Bryce Harrington |
description |
Binary package hint: firefox-3.0
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. |
[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. |
|
| 2009-01-27 21:50:31 |
Bryce Harrington |
title |
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 |
|
| 2009-01-27 21:58:13 |
Bryce Harrington |
xserver-xorg-video-radeonhd: status |
New |
Confirmed |
|
| 2009-01-27 21:58:13 |
Bryce Harrington |
xserver-xorg-video-radeonhd: statusexplanation |
|
|
|
| 2009-01-27 21:58:39 |
Bryce Harrington |
xserver-xorg-video-ati: status |
Confirmed |
In Progress |
|
| 2009-01-27 21:58:39 |
Bryce Harrington |
xserver-xorg-video-ati: importance |
Undecided |
Medium |
|
| 2009-01-27 21:58:39 |
Bryce Harrington |
xserver-xorg-video-ati: statusexplanation |
|
|
|
| 2009-01-27 22:00:28 |
Bryce Harrington |
xserver-xorg-video-radeonhd: status |
Confirmed |
Triaged |
|
| 2009-01-27 22:00:28 |
Bryce Harrington |
xserver-xorg-video-radeonhd: importance |
Undecided |
Medium |
|
| 2009-01-27 22:01:37 |
Bryce Harrington |
cairo: status |
New |
Triaged |
|
| 2009-01-27 22:01:37 |
Bryce Harrington |
cairo: importance |
Undecided |
High |
|
| 2009-01-27 22:01:37 |
Bryce Harrington |
cairo: statusexplanation |
|
|
|
| 2009-01-27 22:32:10 |
Tom Jaeger |
description |
[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. |
[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 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.
[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. |
|
| 2009-01-30 17:39:58 |
Tom Jaeger |
bug |
|
|
added attachment 'xserver-xorg-video-openchrome.debdiff' (xserver-xorg-video-openchrome.debdiff) |
| 2009-01-30 18:12:12 |
Tom Jaeger |
description |
[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 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.
[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. |
[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 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 intrepid and jaunty) in the firefox-smooth-scaling PPA:
https://launchpad.net/~firefox-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. |
|
| 2009-01-30 21:46:54 |
Tom Jaeger |
bug |
|
|
assigned to xf86-video-mga |
| 2009-01-30 21:47:33 |
Bug Watch Updater |
xf86-video-mga: status |
Unknown |
Confirmed |
|
| 2009-01-31 00:42:56 |
Bryce Harrington |
xserver-xorg-video-openchrome: status |
Confirmed |
Triaged |
|
| 2009-01-31 00:42:56 |
Bryce Harrington |
xserver-xorg-video-openchrome: importance |
Undecided |
Medium |
|
| 2009-01-31 00:42:56 |
Bryce Harrington |
xserver-xorg-video-openchrome: statusexplanation |
|
|
|
| 2009-01-31 00:43:23 |
Bryce Harrington |
xserver-xorg-video-i128: status |
Confirmed |
Triaged |
|
| 2009-01-31 00:43:23 |
Bryce Harrington |
xserver-xorg-video-i128: importance |
Undecided |
Medium |
|
| 2009-01-31 00:43:23 |
Bryce Harrington |
xserver-xorg-video-i128: statusexplanation |
|
|
|
| 2009-01-31 00:43:46 |
Bryce Harrington |
xserver-xorg-video-mga: status |
Confirmed |
Triaged |
|
| 2009-01-31 00:43:46 |
Bryce Harrington |
xserver-xorg-video-mga: importance |
Undecided |
Medium |
|
| 2009-01-31 00:43:46 |
Bryce Harrington |
xserver-xorg-video-mga: statusexplanation |
|
|
|
| 2009-01-31 18:07:57 |
Bug Watch Updater |
openchrome: status |
New |
Fix Released |
|
| 2009-02-11 22:59:44 |
Bryce Harrington |
xserver-xorg-video-ati: status |
In Progress |
Fix Released |
|
| 2009-02-11 22:59:44 |
Bryce Harrington |
xserver-xorg-video-ati: statusexplanation |
|
Sounds good, I just uploaded 6.10.99.0 today so guess the -ati target one can be marked fixed now. |
|
| 2009-02-12 08:33:11 |
Tom Jaeger |
bug |
|
|
added attachment 'cairo.debdiff' (cairo.debdiff) |
| 2009-02-12 08:33:11 |
Tom Jaeger |
bug |
|
|
added attachment 'xserver-xorg-video-i128.debdiff' (xserver-xorg-video-i128.debdiff) |
| 2009-02-12 08:33:11 |
Tom Jaeger |
bug |
|
|
added attachment 'xserver-xorg-video-mga.debdiff' (xserver-xorg-video-mga.debdiff) |
| 2009-02-12 08:33:11 |
Tom Jaeger |
bug |
|
|
added attachment 'xserver-xorg-video-radeonhd.debdiff' (xserver-xorg-video-radeonhd.debdiff) |
| 2009-02-12 08:33:11 |
Tom Jaeger |
bug |
|
|
added attachment 'xulrunner-1.9.1.debdiff' (xulrunner-1.9.1.debdiff) |
| 2009-02-12 08:33:11 |
Tom Jaeger |
bug |
|
|
added attachment 'xulrunner-1.9.debdiff' (xulrunner-1.9.debdiff) |
| 2009-02-13 08:30:07 |
Launchpad Janitor |
xserver-xorg-video-openchrome: status |
Triaged |
Fix Released |
|
| 2009-02-13 15:56:43 |
Tom Jaeger |
bug |
|
|
assigned to opensuse |
| 2009-02-13 15:57:39 |
Bug Watch Updater |
None: status |
Unknown |
Confirmed |
|
| 2009-02-13 22:09:57 |
Tom Jaeger |
bug |
|
|
added attachment 'debdiffs.tar.gz' (debdiffs.tar.gz) |
| 2009-02-14 00:10:06 |
Launchpad Janitor |
xserver-xorg-video-i128: status |
Triaged |
Fix Released |
|
| 2009-02-14 00:10:16 |
Launchpad Janitor |
xserver-xorg-video-mga: status |
Triaged |
Fix Released |
|
| 2009-02-14 00:10:24 |
Launchpad Janitor |
cairo: status |
Triaged |
Fix Released |
|
| 2009-02-14 00:10:35 |
Launchpad Janitor |
xserver-xorg-video-radeonhd: status |
Triaged |
Fix Released |
|
| 2009-02-17 02:24:53 |
Tom Jaeger |
cairo: status |
Fix Released |
New |
|
| 2009-02-17 02:46:07 |
Tom Jaeger |
bug |
|
|
added attachment 'cairo.debdiff' (cairo.debdiff) |
| 2009-02-17 03:12:47 |
Tom Jaeger |
bug |
|
|
added attachment 'cairo.debdiff' (cairo.debdiff) |
| 2009-02-23 16:58:11 |
Tom Jaeger |
bug |
|
|
added attachment 'cairo.debdiff' (cairo.debdiff) |
| 2009-03-07 15:53:04 |
Bug Watch Updater |
xf86-video-mga: status |
Confirmed |
Fix Released |
|
| 2009-04-07 14:24:01 |
Oibaf |
bug watch added |
|
https://bugzilla.mozilla.org/show_bug.cgi?id=406646 |
|
| 2009-04-15 16:06:13 |
Alexander Sack |
xulrunner-1.9.1 (Ubuntu): importance |
Undecided |
Medium |
|
| 2009-04-15 16:06:13 |
Alexander Sack |
xulrunner-1.9.1 (Ubuntu): status |
New |
Triaged |
|
| 2009-04-15 16:06:40 |
Alexander Sack |
xulrunner-1.9 (Ubuntu): importance |
Undecided |
Medium |
|
| 2009-04-15 16:06:40 |
Alexander Sack |
xulrunner-1.9 (Ubuntu): status |
New |
Triaged |
|
| 2009-06-16 03:35:16 |
Launchpad Janitor |
branch linked |
|
lp:ubuntu/karmic/cairo |
|
| 2009-06-24 19:50:07 |
Launchpad Janitor |
cairo (Ubuntu): status |
New |
Fix Released |
|
| 2009-06-29 17:28:06 |
Bug Watch Updater |
xf86-video-radeonhd: status |
Confirmed |
Fix Released |
|
| 2009-07-05 15:41:02 |
Tom Jaeger |
description |
[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 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 intrepid and jaunty) in the firefox-smooth-scaling PPA:
https://launchpad.net/~firefox-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. |
[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 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
[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. |
|
| 2009-07-11 11:01:05 |
Tom Jaeger |
description |
[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 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
[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. |
[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
[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. |
|
| 2009-07-18 04:06:19 |
Launchpad Janitor |
branch linked |
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lp:ubuntu/karmic/xserver-xorg-video-openchrome |
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| 2009-07-18 18:35:27 |
Launchpad Janitor |
branch linked |
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lp:ubuntu/karmic/xserver-xorg-video-i128 |
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| 2009-07-25 22:15:17 |
Launchpad Janitor |
branch linked |
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lp:ubuntu/karmic/xserver-xorg-video-mga |
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| 2009-07-26 06:00:05 |
Ritesh |
xf86-video-radeonhd: status |
Fix Released |
Fix Committed |
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| 2009-07-27 03:16:16 |
Bug Watch Updater |
xf86-video-radeonhd: status |
Fix Committed |
Fix Released |
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| 2009-08-16 10:08:27 |
Launchpad Janitor |
branch linked |
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lp:ubuntu/karmic/xserver-xorg-video-radeonhd |
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| 2009-09-28 02:47:54 |
Սահակ |
nominated for series |
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Ubuntu Karmic |
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| 2009-10-03 10:55:23 |
kenjo |
attachment added |
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scale_error.tar.gz http://launchpadlibrarian.net/32930153/scale_error.tar.gz |
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| 2009-10-05 09:25:10 |
Oibaf |
summary |
Pixellated Images in Firefox/Opera due to incorrect EXTEND_PAD implementation in several video drivers |
FFe: Pixellated Images in Firefox/Opera due to incorrect EXTEND_PAD implementation in several video drivers |
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| 2009-10-25 17:35:43 |
Scott Kitterman |
removed subscriber MOTU Release Team |
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| 2009-11-02 10:57:09 |
Matthijs De Smedt |
removed subscriber Matthijs De Smedt |
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| 2009-11-02 18:07:42 |
Սահակ |
removed subscriber Սահակ |
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| 2009-11-22 18:04:53 |
G,G |
removed subscriber G,G |
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| 2009-11-30 20:24:01 |
Bug Watch Updater |
bug watch added |
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https://bugzilla.mozilla.org/show_bug.cgi?id=395260 |
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| 2010-01-07 21:27:39 |
Tom Jaeger |
attachment added |
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extend-pad.patch http://launchpadlibrarian.net/37586395/extend-pad.patch |
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| 2010-02-16 14:37:41 |
Սահակ |
nominated for series |
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Ubuntu Lucid |
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| 2010-02-22 01:30:41 |
Brian Murray |
tags |
firefox3 mt-eval mt-upstream opera |
firefox3 mt-eval mt-upstream opera patch |
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| 2010-02-22 11:57:17 |
Launchpad Janitor |
branch linked |
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lp:ubuntu/karmic-proposed/cairo |
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| 2010-03-19 16:08:28 |
Dimitri John Ledkov |
removed subscriber Ubuntu Review Team |
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| 2010-04-20 10:53:26 |
Bug Watch Updater |
xulrunner: status |
In Progress |
Confirmed |
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| 2010-04-25 19:38:24 |
Tom Jaeger |
xulrunner: importance |
Unknown |
Undecided |
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| 2010-04-25 19:38:24 |
Tom Jaeger |
xulrunner: status |
Confirmed |
New |
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| 2010-04-25 19:38:24 |
Tom Jaeger |
xulrunner: remote watch |
Mozilla Bugzilla #468496 |
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|
| 2010-04-25 19:39:16 |
Tom Jaeger |
xulrunner: status |
New |
Invalid |
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| 2010-04-25 19:41:06 |
Tom Jaeger |
firefox (Ubuntu): status |
Invalid |
Confirmed |
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| 2010-06-03 20:19:37 |
Rogi |
attachment added |
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Bildschirmfoto2.png http://launchpadlibrarian.net/49627778/Bildschirmfoto2.png |
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| 2010-07-15 13:00:42 |
Miroslav Hadzhiev |
bug |
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added subscriber Miro Hadzhiev (Хаджиев) |
| 2010-08-29 18:54:27 |
Micah Gersten |
firefox (Ubuntu): importance |
Undecided |
Medium |
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| 2010-08-29 18:54:27 |
Micah Gersten |
firefox (Ubuntu): status |
Confirmed |
Triaged |
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| 2010-08-29 18:56:05 |
Micah Gersten |
xulrunner-1.9 (Ubuntu): status |
Triaged |
Won't Fix |
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| 2010-09-09 14:44:44 |
Bug Watch Updater |
firefox: importance |
Unknown |
Medium |
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| 2010-09-10 15:03:37 |
Bug Watch Updater |
firefox: status |
Confirmed |
Fix Released |
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| 2010-09-13 17:14:38 |
Bug Watch Updater |
xf86-video-ati: importance |
Unknown |
Medium |
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| 2010-09-13 17:14:47 |
Bug Watch Updater |
bug watch added |
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http://bugs.freedesktop.org/show_bug.cgi?id=19704 |
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| 2010-09-14 01:54:22 |
Bug Watch Updater |
xf86-video-mga: importance |
Unknown |
Medium |
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| 2010-09-14 10:55:51 |
Bug Watch Updater |
xf86-video-radeonhd: importance |
Unknown |
Medium |
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| 2010-10-24 10:55:30 |
Miroslav Hadzhiev |
nominated for series |
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Ubuntu Maverick |
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| 2010-10-24 10:55:30 |
Miroslav Hadzhiev |
nominated for series |
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Ubuntu Natty |
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| 2011-01-25 15:13:41 |
Bug Watch Updater |
xf86-video-ati: importance |
Medium |
Unknown |
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| 2011-01-25 15:13:48 |
Bug Watch Updater |
xf86-video-radeonhd: importance |
Medium |
Unknown |
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| 2011-01-25 16:13:55 |
Bug Watch Updater |
xf86-video-mga: importance |
Medium |
Unknown |
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| 2011-01-25 16:23:17 |
Ex Qwztis |
removed subscriber Ex Qwztis |
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| 2011-01-25 16:25:35 |
Ex Qwztis |
removed subscriber Ex Qwztis |
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| 2011-02-03 17:01:56 |
Bug Watch Updater |
xf86-video-ati: importance |
Unknown |
Medium |
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| 2011-02-03 17:02:20 |
Bug Watch Updater |
xf86-video-radeonhd: importance |
Unknown |
Medium |
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| 2011-02-03 17:03:00 |
Bug Watch Updater |
xf86-video-mga: importance |
Unknown |
Medium |
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| 2011-03-11 20:43:18 |
Bug Watch Updater |
opensuse: status |
Confirmed |
Fix Released |
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| 2011-03-11 20:43:18 |
Bug Watch Updater |
opensuse: importance |
Unknown |
Critical |
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| 2011-05-06 12:13:45 |
Oibaf |
xulrunner-1.9.1 (Ubuntu): status |
Triaged |
Fix Released |
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| 2011-05-06 12:14:08 |
Oibaf |
firefox (Ubuntu): status |
Triaged |
Fix Released |
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| 2011-06-04 02:43:14 |
David |
removed subscriber David |
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