enable f16;
var<private> u : mat3x4<f32> = mat3x4<f32>(mat3x4<f16>(1.0h, 2.0h, 3.0h, 4.0h,
                                                       5.0h, 6.0h, 7.0h, 8.0h,
                                                       9.0h, 10.0h, 11.0h, 12.0h));