How to implement the black hole effect using QML?

Question

Qt

The task is this. It is necessary to generate a black screen and place white dots (stars) on it. Then you need to implement a moving black hole with a lensing effect. Those. when approaching the hole, the stars should stretch, turning into arcs - the closer to the boundary of the hole, the larger the arc. At the very border, the star turns into a circle. If with a static hole I can still draw everything using C ++ and throw the finished picture into QML, then how to implement the same effect with a moving hole is not entirely clear (I think it will be resource-intensive to redraw each frame). Any ideas?

Answer 1

doc.qt.io/qt-5/qml-qtquick-shadereffect.html
www.geeks3d.com/20110428/shader-library-swirl-post...