QPainter cannot anti-alias circles etc. when using OpenGL, so instead use native OpenGL anti-aliasing.
Maybe we should enable anti-aliasing for all decorations though?
e76120f krita: Enable anti-aliasing of the mirror axis handles.
krita/ui/kis_mirror_axis.cpp | 17 +++++++++++++++++
1 file changed, 17 insertions(+)
Upstream: quickgit.kde.org