skia2/resources/sksl/intrinsics/AbsInt.sksl

uniform half4 testInputs;
uniform half4 colorGreen, colorRed;

half4 main() {
    int4 expected = int4(1, 0, 0, 2);
    return (abs(int4(testInputs).x)    == expected.x     &&
            abs(int4(testInputs).xy)   == expected.xy    &&
            abs(int4(testInputs).xyz)  == expected.xyz   &&
            abs(int4(testInputs).xyzw) == expected.xyzw) ? colorGreen : colorRed;
}