Turn on anti-aliasing, and update screenshot. The example is still not great and under-documented, but at least it doesn't look horrible anymore. Pick-to: 6.6 Task-number: QTBUG-120291 Change-Id: Ie709cb51d64c535d7cd0aa1451b3c5bb901324cb Reviewed-by: Axel Spoerl <axel.spoerl@qt.io> (cherry picked from commit 2b9d021ba5487f7f5f67b958a17160c4cf468561) Reviewed-by: Qt Cherry-pick Bot <cherrypick_bot@qt-project.org>