No bilinear filtering in ShaderEffect

 
import QtQuick 2.0

Row {
    Image {
        id: img
        source: "img.jpg"
    }

    ShaderEffect {
        property variant source: img
        width: img.width * 2
        height: img.height * 2
    }

    Image {
        source: img.source
        width: img.width * 2
        height: img.height * 2
    }
}