uniform half4 colorGreen, colorRed;

half4 main(float2 coords) {
    bool4 inputVal = bool4(colorGreen.rrgb); // FFTF
    bool4 expected = bool4(colorGreen.rgga); // FTTT

    const bool4 constVal = bool4(false, false, true, false);
    return (any(inputVal.xy)   == expected.x &&
            any(inputVal.xyz)  == expected.y &&
            any(inputVal.xyzw) == expected.z &&
            any(constVal.xy)   == expected.x &&
            any(constVal.xyz)  == expected.y &&
            any(constVal.xyzw) == expected.z) ? colorGreen : colorRed;
}