skia2/resources/sksl/intrinsics/ClampInt.sksl

uniform half4 testInputs;
uniform half4 colorGreen, colorRed;

half4 main() {
    int4 expectedA = int4(-100,    0,   75, 100);

    int4 intValues = int4(testInputs * 100);
    //                   (-125,    0,   75, 225)

    int4 clampLow  = int4(-100, -200, -200, 100);
    int4 expectedB = int4(-100,    0,   50, 225);
    int4 clampHigh = int4( 100,  200,   50, 300);

    return (clamp(intValues.x,    -100, 100)                     == expectedA.x     &&
            clamp(intValues.xy,   -100, 100)                     == expectedA.xy    &&
            clamp(intValues.xyz,  -100, 100)                     == expectedA.xyz   &&
            clamp(intValues.xyzw, -100, 100)                     == expectedA.xyzw  &&
            clamp(intValues.x,    clampLow.x,    clampHigh.x   ) == expectedB.x     &&
            clamp(intValues.xy,   clampLow.xy,   clampHigh.xy  ) == expectedB.xy    &&
            clamp(intValues.xyz,  clampLow.xyz,  clampHigh.xyz ) == expectedB.xyz   &&
            clamp(intValues.xyzw, clampLow.xyzw, clampHigh.xyzw) == expectedB.xyzw) ? colorGreen
                                                                                    : colorRed;
}