QSvgGenerator doesn't export QPixmap (brush with Qt::TexturePattern)

    QSvgGenerator generator;                              
    generator.setSize(QSize(100, 100));
    generator.setViewBox(QRect(0, 0, 100, 100));
    generator.setFileName("test.svg");

    QPixmap picture("picture.png");
    QBrush brush(Qt::blue, picture);

    QPainter painter;
    painter.begin(&generator);
    painter.fillRect(QRect(0, 0, 100, 100), brush);
    painter.end();