Windows with D3D or Vulkan: stretch effect is not ideal when resizing QQuickWindow

#include <QGuiApplication>
#include <QQuickPaintedItem>
#include <QQuickWindow>
#include <QPainter>


class Paintable final : public QQuickPaintedItem
{
public:
    explicit Paintable(QQuickItem* parent = nullptr)
    : QQuickPaintedItem(parent)
    {
        setOpaquePainting(true);
    }

    void paint(QPainter* painter) override
    {
        QColor highlight{255, 0, 0, 50};

        painter->fillRect(QRect{QPoint{10, 0},    QSize{100, 100}}, highlight);
        painter->fillRect(QRect{QPoint{20, 20},   QSize{100, 100}}, highlight);
        painter->fillRect(QRect{QPoint{100, 100}, QSize{100, 100}}, highlight);
    }
};

int main(int argc, char* argv[])
{
    QGuiApplication app(argc, argv);

    // QQuickWindow::setGraphicsApi(QSGRendererInterface::OpenGL);
    auto* qquickWindow = new QQuickWindow();

    auto* paintable = new Paintable(qquickWindow->contentItem());
    paintable->setSize(QSize{1000, 1000});
    paintable->setVisible(true);
    qquickWindow->show();


    return app.exec();
}