@Override
    protected void initFilter(AssetManager manager, RenderManager renderManager, ViewPort vp, int w, int h) {
        this.viewPort = vp;
        material = new Material(manager, "Common/MatDefs/Post/LightScattering.j3md");
    }
Creates a lightScatteringFilter

@param lightPosition the desired location (in world coordinates, alias
created)
jme3-effects/src/main/java/com/jme3/post/filters/LightScatteringFilter.java