title: GLPaint in OpenGL ES 2.0
body: <p>Do anyone tried GLPaint sample application with OpenGl ES 2.0 ? I had a try an got errors with  <code>glMatrixMode(), glPointSize(), glOrthof(), glTexEnvf()</code> methods .</p>
  
  <p><img src="https://i.stack.imgur.com/cJNZz.png" alt="enter image description here"></p>