function orthographic(left, right, bottom, top, near, far, out) {
  out = out ?? create();
  const lr = 1 / (left - right),
    bt = 1 / (bottom - top),
    nf = 1 / (near - far);
  out[0] = -2 * lr;
  out[1] = 0;
  out[2] = 0;
  out[3] = 0;
  out[4] = 0;
  out[5] = -2 * bt;
  out[6] = 0;
  out[7] = 0;
  out[8] = 0;
  out[9] = 0;
  out[10] = 2 * nf;
  out[11] = 0;
  out[12] = (left + right) * lr;
  out[13] = (top + bottom) * bt;
  out[14] = (far + near) * nf;
  out[15] = 1;
  return out;
}
Generates a orthogonal projection matrix with the given bounds

@param {number} left Left bound of the frustum
@param {number} right Right bound of the frustum
@param {number} bottom Bottom bound of the frustum
@param {number} top Top bound of the frustum
@param {number} near Near bound of the frustum
@param {number} far Far bound of the frustum
@param {Mat4} [out] mat4 frustum matrix will be written into
@return {Mat4} out