third_party/skia/resources/sksl/metal/CastMat2x3ToMat4x4.sksl

void main() {
    float4x4 a = float4x4(6);
    float4x4 b = float4x4(float2x3(7));
    sk_FragColor.x = (a[1] == b[1]) ? 0 : 1;
}