skia2/resources/sksl/shared/SwizzleScalar.sksl

uniform half unknownInput; // 1

half4 main(float2 coords) {
    half x = unknownInput;

    half4 v = x.xx01;
    v = unknownInput.xx01;
    v = unknownInput.0x10;
    v = unknownInput.0x0x;

    return v;
}