@Override
    public void read(JmeImporter importer) throws IOException {
        super.read(importer);
        InputCapsule capsule = importer.getCapsule(this);

        this.reduceMul = capsule.readFloat("reduceMul", 0.125f);
        this.spanMax = capsule.readFloat("spanMax", 8f);
        this.subPixelShift = capsule.readFloat("subPixelShift", 0.25f);
        this.vxOffset = capsule.readFloat("vxOffset", 0f);
    }
Load properties when the filter is de-serialized, for example when
loading from a J3O file.

@param importer the importer to use (not null)
@throws IOException from the importer
jme3-effects/src/main/java/com/jme3/post/filters/FXAAFilter.java