urho3d/Bin/Data/PostProcess/Blur.xml

<renderpath>
    <rendertarget name="blurh" tag="Blur" sizedivisor="2 2" format="rgba" filter="true" />
    <rendertarget name="blurv" tag="Blur" sizedivisor="2 2" format="rgba" filter="true" />
    <command type="quad" tag="Blur" vs="Blur" ps="Blur" psdefines="BLUR3" output="blurh">
        <parameter name="BlurDir" value="1.0 0.0" />
        <parameter name="BlurRadius" value="2.0" />
        <parameter name="BlurSigma" value="2.0" />
        <texture unit="diffuse" name="viewport" />
    </command>
    <command type="quad" tag="Blur" vs="Blur" ps="Blur" psdefines="BLUR3" output="blurv">
        <parameter name="BlurDir" value="0.0 1.0" />
        <parameter name="BlurRadius" value="2.0" />
        <parameter name="BlurSigma" value="2.0" />
        <texture unit="diffuse" name="blurh" />
    </command>
    <command type="quad" tag="Blur" vs="Blur" ps="Blur" psdefines="BLUR3" output="blurh">
        <parameter name="BlurDir" value="1.0 0.0" />
        <parameter name="BlurRadius" value="1.0" />
        <parameter name="BlurSigma" value="2.0" />
        <texture unit="diffuse" name="blurv" />
    </command>
    <command type="quad" tag="Blur" vs="Blur" ps="Blur" psdefines="BLUR3" output="blurv">
        <parameter name="BlurDir" value="0.0 1.0" />
        <parameter name="BlurRadius" value="1.0" />
        <parameter name="BlurSigma" value="2.0" />
        <texture unit="diffuse" name="blurh" />
    </command>
    <command type="quad" tag="Blur" vs="CopyFramebuffer" ps="CopyFramebuffer" output="viewport">
        <texture unit="diffuse" name="blurv" />
    </command>
</renderpath>