dawn-cmake/test/matrix/constructor/elements/mat4x4.wgsl

let m = mat4x4<f32>(0.0, 1.0, 2.0, 3.0,
                    4.0, 5.0, 6.0, 7.0,
                    8.0, 9.0, 10.0, 11.0,
                    12.0, 13.0, 14.0, 15.0);