Details
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Bug
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Resolution: Incomplete
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P2: Important
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None
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5.1.1, 5.2.0
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Debian Sid
Qt packages (5.2.0) from Debian Experimental
Qt 5.1.1 from Sid gives the same result
Description
I don't have hardcoded subpixel order neither in fontconfig or xresources.
All KDE4 apps, Gimp, Inkscape, Chromium and LibreOffice detect subpixel order correctly.
However, Qt5 apps (for example, Transmission-Qt) use grayscale antialiasing, unless I explicitly specify subpixel order with fontconfig. Note that Transmission-Qt uses Qt Widgets, not Qt Quick.
In Qt4 there was a call to XRenderQuerySubpixelOrder in src/gui/kernel/qapplication_x11.cpp. I can't find any similar calls in Qt 5 (except src/3rdparty/xcb).
This causes these problems:
- I have to manually specify subpixel order, while it can be autodetected
- Possibly wrong subpixel order on rotated screen (can't test right now)
- I can't specify subpixel order using fontconfig for two displays with different subpixel order