resources/sksl/intrinsics/SignInt.sksl

uniform half4 minus1234;
uniform half4 colorGreen, colorRed;

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