urho3d/SourceAssets/GLSLShaders/Unlit.xml

<shaders>
    <shader name="Unlit" type="vs">
        <option name="VCol" define="VERTEXCOLOR" />
        <variation name="" />
        <variation name="Skinned" define="SKINNED" />
        <variation name="Billboard" define="BILLBOARD" />
    </shader>
    <shader name="Unlit" type="ps">
        <option name="Diff" define="DIFFMAP" />
        <option name="VCol" define="VERTEXCOLOR" />
    </shader>
</shaders>