code: function fromScaling(out, v) {
    out[0] = v[0];
    out[1] = 0;
    out[2] = 0;
  
    out[3] = 0;
    out[4] = v[1];
    out[5] = 0;
  
    out[6] = 0;
    out[7] = 0;
    out[8] = 1;
    return out;
  }
docs: Creates a matrix from a vector scaling
  This is equivalent to (but much faster than):
  
  mat3.identity(dest);
  mat3.scale(dest, dest, vec);
  
  @param {mat3} out mat3 receiving operation result
  @param {vec2} v Scaling vector
  @returns {mat3} out