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
