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, true, false, true);
8    return (all(input.xy)      == expected.x &&
9            all(input.xyz)     == expected.y &&
10            all(input.xyzw)    == expected.z &&
11            all(constVal.xy)   == expected.x &&
12            all(constVal.xyz)  == expected.y &&
13            all(constVal.xyzw) == expected.z) ? colorGreen : colorRed;
14}
15