tests/sksl/shared/SwizzleScalar.metal

#include <metal_stdlib>
#include <simd/simd.h>
using namespace metal;
struct Uniforms {
    float unknownInput;
};
struct Inputs {
};
struct Outputs {
    float4 sk_FragColor [[color(0)]];
};

fragment Outputs fragmentMain(Inputs _in [[stage_in]], constant Uniforms& _uniforms [[buffer(0)]], bool _frontFacing [[front_facing]], float4 _fragCoord [[position]]) {
    Outputs _out;
    (void)_out;
    float x = _uniforms.unknownInput;
    float4 v = float4(float2(x), 0.0, 1.0);
    v = float4(float2(_uniforms.unknownInput), 0.0, 1.0);
    v = float4(0.0, _uniforms.unknownInput, 1.0, 0.0);
    v = float4(0.0, _uniforms.unknownInput, 0.0, _uniforms.unknownInput);
    _out.sk_FragColor = v;
    return _out;
}