var<private> m = mat2x3(0.0f, 1.0f, 2.0f,
                        3.0f, 4.0f, 5.0f);

@group(0) @binding(0)
var<storage, read_write> out : mat2x3<f32>;

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