struct vs_in {
    float3 position : POS;
    float3 color    : COL;
};

struct vs_out {
    float4 position : SV_POSITION;
    float3 color    : COL;
};

vs_out vs_main(vs_in input) {

    vs_out output;

    output.position = float4(input.position, 1.0);
    output.color    = input.color;

    return output;
}

float4 ps_main(vs_out input) : SV_TARGET {
    return float4(input.color, 1.0);
}