1uniform half4 inputH4, expectedH4;
2uniform half4 colorGreen, colorRed;
3
4half4 main(float2 coords) {
5    bool4 input = bool4(inputH4);
6    bool4 expected = bool4(expectedH4);
7    const bool4 constVal = bool4(true, false, true, false);
8    return (not(input.xy)      == expected.xy    &&
9            not(input.xyz)     == expected.xyz   &&
10            not(input.xyzw)    == expected.xyzw  &&
11            not(constVal.xy)   == expected.xy    &&
12            not(constVal.xyz)  == expected.xyz   &&
13            not(constVal.xyzw) == expected.xyzw) ? colorGreen : colorRed;
14}
15