| Summary: | "display scaling" on hidpi screen results in poor font quality | ||
|---|---|---|---|
| Product: | [Plasma] plasmashell | Reporter: | Lukas Schneiderbauer <lukas.schneiderbauer> |
| Component: | general | Assignee: | David Edmundson <kde> |
| Status: | RESOLVED FIXED | ||
| Severity: | normal | CC: | adonai, bhush94, bo, e.ekmecic, fabian, james, nate, nw9165-jjnfov5mav, plasma-bugs, simonandric5, subdiff |
| Priority: | NOR | ||
| Version: | 5.7.3 | ||
| Target Milestone: | 1.0 | ||
| Platform: | Gentoo Packages | ||
| OS: | Linux | ||
| Latest Commit: | https://commits.kde.org/kwin/22d898399b38cadfd72474a2b50f1d41db7bd28e | Version Fixed In: | |
| Attachments: |
"desktop effects" dialog screenshot
screenshot of "systemsettings" "desktop effects" dialog screenshot screenshot of "systemsettings" logout overlay; scaling=1.5 |
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Description
Lukas Schneiderbauer
2016-08-05 16:03:52 UTC
Created attachment 100465 [details]
"desktop effects" dialog screenshot
Note that on this picture the left bar also has ugly fonts, but this seems to be an artifact of the screenshot.
Created attachment 100466 [details]
screenshot of "systemsettings"
This screenshot is actually not really representive.
Only the hovered icon has an ugly underlying font in reality. The rest is an artifact of the bad screenshot quality.
Created attachment 100467 [details]
"desktop effects" dialog screenshot
sorry, picked wrong screenshot
Created attachment 100468 [details]
screenshot of "systemsettings"
sorry, picked wrong screenshot
Still relevant in 5.8.x? How does your shutdown overlay look? How Discover? Yes, still relevant. The fonts in the shutdown overlay and in discover look crappy as well (like in my screenshots). Non integer numbers such as 2 or 3, will produce artifacts. Yes, you're right. But it's more: Certain elements (I assume everything directly connected to the plasmashell or the theme) will not scale at all. Try it out by setting the scale factor first to '2' -> Everything works fine. Then set it to '1.9' -> artifacts + taskbar, window decorations and launcher and icons in applications not scaled. Git commit c203e366c400bab750e0b0f3d640f7fa85c35065 by David Edmundson. Committed on 25/10/2016 at 20:55. Pushed by davidedmundson into branch 'master'. Support non integer scale factors in kiconengine REVIEW: 129253 M +5 -1 src/kiconengine.cpp http://commits.kde.org/kiconthemes/c203e366c400bab750e0b0f3d640f7fa85c35065 Git commit 9f6b69237c299cabff1427da54768624545e1943 by David Edmundson. Committed on 25/10/2016 at 20:58. Pushed by davidedmundson into branch 'master'. Support non integer scale factors in KFileDelegate REVIEW: 129252 M +7 -1 src/widgets/kfileitemdelegate.cpp http://commits.kde.org/kio/9f6b69237c299cabff1427da54768624545e1943 The infocenter seems also to be affected by this bug: https://bugzilla.opensuse.org/show_bug.cgi?id=1006651 Git commit 4b2abc581c6b3e7a4c2f1f893d47fad5d3806aca by David Edmundson. Committed on 22/11/2016 at 10:32. Pushed by davidedmundson into branch 'Plasma/5.8'. Disable Qt's high DPI scaling on shutdown/switch user dialogs Summary: They use Plasma's scaling, so in theory it should have absolutely no effect. In practice it has an effect of hitting a Qt bug with font rendering. Test Plan: None done Reviewers: #plasma, mart Reviewed By: mart Subscribers: plasma-devel Tags: #plasma Differential Revision: https://phabricator.kde.org/D3158 M +1 -0 ksmserver/main.cpp http://commits.kde.org/plasma-workspace/4b2abc581c6b3e7a4c2f1f893d47fad5d3806aca Any update on this one? Things like the shutdown overlay for example still look messed up with display scaling in KDE Neon 5.9.0. For me only scaling factors 1.5 and 2 work without problems. Did you try one of these? Yes, I've tried 1.5, same issue. I've found that setting XServer DPI manually fixes these fractional scaling problems. On my 2560x1440 display I use a DPI of 144 (i.e. a scaling factor of 1.5x), which caused problems in regular Qt programs, the lockscreen, shutdown/logout/suspend dialog, Okular etc. To fix this, added "-dpi 144" to ServerArguments in my sddm.conf and set display scaling back to 1.0x. This makes KDE and all Qt programs scale flawlessly but GTK programs (i.e. Firefox) remain unscaled which is an acceptable tradeoff for me. I apologize if I'm spamming the mailing lists as I've been reposting this on all of the bugs I've been tracking related to this issue. Created attachment 105535 [details]
logout overlay; scaling=1.5
Fractional scaling on QtQuick views has been improved for Qt 5.10. Please report if you have any issues after that. This is only partly resolved. The labels are blurry because In QtQuick/Controls/Label.qml (qtquick controls 1): renderType: Settings.isMobile ? Text.QtRendering : Text.NativeRendering Needs to be: renderType: Settings.isMobile || Screen.devicePixelRatio % 1 !== 0 ? Text.QtRendering : Text.NativeRendering Following: https://cgit.kde.org/plasma-framework.git/commit/?id=a21bc11fe11651f6d211489ebfc8435cef877194 This probably means all KDE components should use PlasmaComponents.Label (import org.kde.plasma.components 2.0 as PlasmaComponents) That's a workaround. It is fixed in Qt 5.11 with native rendering Worth porting code from Qqc1 to qqc2 as we're doing it anyway. But that only fixes the issue by chance Git commit 22d898399b38cadfd72474a2b50f1d41db7bd28e by Vlad Zagorodniy, on behalf of Bo Simonsen. Committed on 15/08/2018 at 08:31. Pushed by vladz into branch 'Plasma/5.12'. [kcmkwin] Use QtQuick.Controls 2.0 for Label and TextField Summary: Using QtQuick.Controls for Label and TextField can result in blurry font rendering for a fractional scaling (e.g. 1,5). There is a work around for QtQuick.Controls 2.x therefore using QtQuick.Controls 2.0 for Label and TextField resolves the problem Reviewers: #kwin, davidedmundson Reviewed By: #kwin, davidedmundson Subscribers: ngraham, zzag, davidedmundson, kwin Tags: #kwin Differential Revision: https://phabricator.kde.org/D14495 M +6 -5 kcmkwin/kwincompositing/qml/Effect.qml M +5 -4 kcmkwin/kwincompositing/qml/EffectView.qml M +5 -4 kcmkwin/kwindecoration/qml/Buttons.qml https://commits.kde.org/kwin/22d898399b38cadfd72474a2b50f1d41db7bd28e Git commit fde8d23beeae5d83af3b4384c96e1da8e27a701e by Nathaniel Graham, on behalf of Bo Simonsen. Committed on 21/09/2018 at 15:12. Pushed by ngraham into branch 'Plasma/5.14'. Use QtQuick.Controls 2.0 Label in energy and fileindexmonitor KCM Summary: The QtQuick.Controls 1.0 does not handle Label well on screens that uses a fractional scaling. The fonts become blurry, this has been fixed in QtQuick.Controls 2.0 and org.kde.plasma.components, however we prefer to use QtQuick.Controls 2.0 since the modules will anyway transition to 2.x at some time. Test Plan: * Use scaling 1,5 and fonts will appear correctly in kcm_energyinfo and kcm_fileindexmonitor Reviewers: davidedmundson Reviewed By: davidedmundson Subscribers: zzag, davidedmundson, ngraham, broulik, plasma-devel Tags: #plasma Differential Revision: https://phabricator.kde.org/D14011 M +5 -4 Modules/energy/package/contents/ui/main.qml M +5 -4 Modules/fileindexermonitor/package/contents/ui/main.qml https://commits.kde.org/kinfocenter/fde8d23beeae5d83af3b4384c96e1da8e27a701e |