Improvements to curve renderer

This contains numerous updates/improvements to the curve renderer
and the manual test.

Most notably, it replaces the Delaunay triangulator with a more robust
algorithm which uses qTriangulate() for the internal hull (like the basic
code path) and a separate triangulation for curves which adds triangles
on the outside and calculates texture coordinates accordingly. This
gives antialiasing on straight lines as well.

It also has multiple improvements to the cubic-to-quad algorithm, for
instance circles now look as they should.

Currently, the QTriangulatingStroker is used for solid strokes (causing
jagged edges there) and the QPainterPath stroker is used for dash strokes
(causing some issues with antialiasing).

Pick-to: 6.6
Task-number: QTBUG-104122
Change-Id: Ic195aa874dc73c62359a93764ef38a09efb012e3
Reviewed-by: Paul Olav Tvete <paul.tvete@qt.io>
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Reviewed-by: Eirik Aavitsland <eirik.aavitsland@qt.io>
Reviewed-by: Eskil Abrahamsen Blomfeldt <eskil.abrahamsen-blomfeldt@qt.io>

0 files changed, 0 insertions, 0 deletions