var<private> m = mat4x2(0.0f, 1.0f,
                        2.0f, 3.0f,
                        4.0f, 5.0f,
                        6.0f, 7.0f);

@group(0) @binding(0)
var<storage, read_write> out : mat4x2<f32>;

@compute @workgroup_size(1)
fn f() {
  out = m;
}