urho3d/Bin/CoreData/Shaders/GLSL/Blur.xml

<shaders>
    <shader type="vs" />
    <shader type="ps">
    	<variation name="Blur3" define="BLUR3" />
        <variation name="Blur5" define="BLUR5" />
        <variation name="Blur7" define="BLUR7" />
        <variation name="Blur9" define="BLUR9" />
    </shader>
</shaders>