Very cool. This worked well for the OpenGL viewport. Thank you Jean-Michaël and Christian for your two solutions for this problem.
> On Oct 7, 2017, at 4:20 PM, Jean-Michaël Celerier > <jeanmichael.celer...@gmail.com> wrote: > > > Can you suggest a sample size, > > 8 or 16 maybe ? I find 4 to be a bit pixelated. > > > or perhaps give a code example? > > QOpenGLWidget* w = new QOpenGLWidget;; > > auto fmt = QSurfaceFormat::getDefaultFormat(); > fmt.setSamples(16); > > w->setFormat(fmt); > view.setViewport(w); > > > > ------- > Jean-Michaël Celerier > http://www.jcelerier.name <http://www.jcelerier.name/> > On Sat, Oct 7, 2017 at 7:36 PM, Patrick Stinson <patrickk...@gmail.com > <mailto:patrickk...@gmail.com>> wrote: > Interesting. Can you suggest a sample size, or perhaps give a code example? > I’m sure how this works. Thanks! > > On Oct 7, 2017, at 10:01 AM, Jean-Michaël Celerier > <jeanmichael.celer...@gmail.com <mailto:jeanmichael.celer...@gmail.com>> > wrote: > >> > Don't do that and the anti-aliasing will work. >> >> Or alternatively enable GL antialiasing for instance by using >> QSurfaceFormat::setSamples >> (http://doc.qt.io/qt-5/qsurfaceformat.html#setSamples >> <http://doc.qt.io/qt-5/qsurfaceformat.html#setSamples>) and passing the >> format to your GL viewport. However this ends up being quite slow on retina >> display in my experience. >> >> >> >> ------- >> Jean-Michaël Celerier >> http://www.jcelerier.name <http://www.jcelerier.name/> >> On Sat, Oct 7, 2017 at 10:09 AM, Christian Gagneraud <chg...@gmail.com >> <mailto:chg...@gmail.com>> wrote: >> On 7 October 2017 at 16:11, Patrick Stinson <patrickk...@gmail.com >> <mailto:patrickk...@gmail.com>> wrote: >> > >> > Hello! >> > >> > I am seeing the antialiasing is still quite grainy using a QGraphicsView >> > on mac. Is it possible to increase the device pixel ratio, or something >> > similar? >> > >> > See attached screenshots, expanding to full rez before viewing. Note >> > smoothness of retina button pixmaps at left VS jagged lines in middle. >> > >> > I am using a QOpenGLWidget for the viewport (though this doesn’t seem to >> > matter): >> >> I vaguely remember that anti-aliasing doesn't work with an OpenGL view >> (that was on a Linux machine). >> >> > view.setViewport(QOpenGLWidget()) >> >> Don't do that and the anti-aliasing will work. >> >> Chris >> >> >> >> > >> > I am painting QPainterPaths like this: >> > >> > def paint(self, painter, option, widget): >> > painter.save() >> > painter.setPen(self.pen) >> > painter.setBrush(self.brush) >> > painter.drawPath(self.path) >> > painter.restore() >> > >> > with the following render hints: >> > >> > view.setRenderHints(QPainter.Antialiasing|QPainter.HighQualityAntialiasing|QPainter.SmoothPixmapTransform|QPainter.TextAntialiasing) >> > >> > and the following attribute set on the QApplication: >> > >> > app.setAttribute(Qt.AA_UseHighDpiPixmaps, True) >> > >> > Thanks! >> > -P >> > >> > >> > >> > >> > >> > _______________________________________________ >> > Interest mailing list >> > Interest@qt-project.org <mailto:Interest@qt-project.org> >> > http://lists.qt-project.org/mailman/listinfo/interest >> > <http://lists.qt-project.org/mailman/listinfo/interest> >> > >> _______________________________________________ >> Interest mailing list >> Interest@qt-project.org <mailto:Interest@qt-project.org> >> http://lists.qt-project.org/mailman/listinfo/interest >> <http://lists.qt-project.org/mailman/listinfo/interest> >> >
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