> 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) 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 On Sat, Oct 7, 2017 at 10:09 AM, Christian Gagneraud <chg...@gmail.com> wrote: > On 7 October 2017 at 16:11, Patrick Stinson <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 > > http://lists.qt-project.org/mailman/listinfo/interest > > > _______________________________________________ > Interest mailing list > Interest@qt-project.org > http://lists.qt-project.org/mailman/listinfo/interest >
_______________________________________________ Interest mailing list Interest@qt-project.org http://lists.qt-project.org/mailman/listinfo/interest
