var<private> m = mat4x4(vec4(0.0, 1.0, 2.0, 3.0),
                        vec4(4.0, 5.0, 6.0, 7.0),
                        vec4(8.0, 9.0, 10.0, 11.0),
                        vec4(12.0, 13.0, 14.0, 15.0));