windows hdpi support & opengl

[Dmitry Kazakov]

Last time I tried, it worked somewhat ok with master + Qt 5.6 RC, not beta.
With Qt 5.5 it didn't work at all.

On Thu, Apr 14, 2016 at 4:52 PM, Boudewijn Rempt <boud at valdyas.org> wrote:

> I'm trying to make Krita work correctly on hi-dpi windows screens like the
> Surface Pro 3 and 4. On OSX with Retina support, I haven't
> had complaints, but for Windows there's this bug:
>
> https://bugs.kde.org/show_bug.cgi?id=360541
>
> If I enable
>
>  QCoreApplication::setAttribute(Qt::AA_EnableHighDpiScaling);
>
> as is done in
>
>  http://files.kde.org/krita/3/windows/krita3-prealpha3-de0d43d.zip
>
> Users complain that if they enable 150% or 200% display scaling both
> the opengl-based and the cpu, qpainter-based canvas are wrong: the
> image is also displayed at 150% or 200%.
>
> This is the same image at 100% zoom with scaling:
>
> http://imgur.com/shQ8iyw
>
> when the option is disabled as in
>
>  http://files.kde.org/krita/3/windows/krita-2.99.89.zip
>
> All the ui elements are wrong and sometimes even the svg icons
> aren't scaled correctly.
>
> http://imgur.com/VqoSg59
>
> Is there a way I can enable the hidpi scaling for the ui elements,
> but handle the opengl and qpainter canvas widget on my own? I'm
> looking at http://doc.qt.io/qt-5/highdpi.html which explains why
> there's no problem on OSX, with the OpenGL canvas enabled, but not
> how I can correctly render images on Windows.
>
> --
> Boudewijn Rempt | http://www.krita.org, http://www.valdyas.org
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>



-- 
Dmitry Kazakov
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