code: function create() {
    var out = new Float32Array(9)
    out[0] = 1
    out[1] = 0
    out[2] = 0
    out[3] = 0
    out[4] = 1
    out[5] = 0
    out[6] = 0
    out[7] = 0
    out[8] = 1
    return out
  }
docs: Creates a new identity mat3
  
  @alias mat3.create
  @returns {mat3} a new 3x3 matrix