title: OpenGL Smooth Polygon
body: <p>I am trying to make this a smooth polygon using OpenGL, but it is not doing anything.  Can someone please explain what I am doing wrong?</p>
  
  <pre><code>glColor4ub(r, g, b, a);
  
  glEnable(GL_POLYGON_SMOOTH);
  glHint(GL_POLYGON_SMOOTH_HINT, GL_NICEST);
  
  glBegin(GL_QUADS);
          glVertex2i(x, y);
          glVertex2i(x1, y1);
          glVertex2i(x2, y2);
          glVertex2i(x3, y3);
  glEnd();
  
  glDisable(GL_POLYGON_SMOOTH);
  glHint(GL_POLYGON_SMOOTH_HINT, GL_DONT_CARE);
  </code></pre>
  
  <p>Thanks in advance!</p>