resources/sksl/intrinsics/Inversesqrt.sksl

uniform half4 inputVal, expected;
uniform half4 colorGreen, colorRed;

half4 main(float2 coords) {
    const half4 constVal = half4(1, 4, 16, 64);
    const half4 negativeVal = half4(-1, -4, -16, -64);  // should not optimize away
    return (inversesqrt(inputVal.x)       == expected.x     &&
            inversesqrt(inputVal.xy)      == expected.xy    &&
            inversesqrt(inputVal.xyz)     == expected.xyz   &&
            inversesqrt(inputVal.xyzw)    == expected.xyzw  &&
            inversesqrt(constVal.x)       == expected.x     &&
            inversesqrt(constVal.xy)      == expected.xy    &&
            inversesqrt(constVal.xyz)     == expected.xyz   &&
            inversesqrt(constVal.xyzw)    == expected.xyzw  &&
            inversesqrt(negativeVal.x)    == expected.x     &&
            inversesqrt(negativeVal.xy)   == expected.xy    &&
            inversesqrt(negativeVal.xyz)  == expected.xyz   &&
            inversesqrt(negativeVal.xyzw) == expected.xyzw) ? colorGreen : colorRed;
}