skia2/tests/sksl/metal/CastHalf4ToMat2x2.metal

#include <metal_stdlib>
#include <simd/simd.h>
using namespace metal;
struct Inputs {
};
struct Outputs {
    half4 sk_FragColor [[color(0)]];
};
fragment Outputs fragmentMain(Inputs _in [[stage_in]], bool _frontFacing [[front_facing]], float4 _fragCoord [[position]]) {
    Outputs _out;
    (void)_out;
    half2x2 m1 = half2x2(half2(1.0h, 2.0h), half2(3.0h, 4.0h));
    _out.sk_FragColor = m1[0].xyxy;
    return _out;
}