@Override
    protected Material getMaterial() {
        material.setVector3("LightPosition", screenLightPos);
        material.setInt("NbSamples", nbSamples);
        material.setFloat("BlurStart", blurStart);
        material.setFloat("BlurWidth", blurWidth);
        material.setFloat("LightDensity", innerLightDensity);
        material.setBoolean("Display", display);
        return material;
    }
Creates a lightScatteringFilter

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