[require]
shader model >= 4.0
shader model < 6.0

[effect]
float4 main() : sv_position { return 0; }

VertexShader vs = CompileShader(vs_4_0, main());
GeometryShader gs = ConstructGSWithSO(vs, "foo");

technique11
{
    pass p1
    {
        SetGeometryShader(gs);
    }

    pass p2
    {
        SetGeometryShader(ConstructGSWithSO(gs, "mew"));
    }
}

[effect]
float4 main() : sv_position { return 0; }
GeometryShader chain = ConstructGSWithSO(CompileShader(vs_4_0, main()), "foo");
GeometryShader chained = ConstructGSWithSO(ConstructGSWithSO(chain, "nya"), "mew");

technique11
{
    pass p1
    {
        SetGeometryShader(chain);
    }

    pass p2
    {
        SetGeometryShader(chained);
    }
}