skia2/resources/sksl/intrinsics/Fract.sksl

uniform half4 testInputs;
uniform half4 colorGreen, colorRed;

half4 main() {
    half4 expected = half4(0.75, 0, 0.75, 0.25);
    return (fract(testInputs.x)    == expected.x     &&
            fract(testInputs.xy)   == expected.xy    &&
            fract(testInputs.xyz)  == expected.xyz   &&
            fract(testInputs.xyzw) == expected.xyzw) ? colorGreen : colorRed;
}