title: Integrating OpenCV in a OpenGL application
body: <p>i'm working on an OpenGL project, now i've the need to show an OpenCV window in the same application.
  After calling   </p>
  
  <p><code>cvNamedWindow("OPEN_CV");</code>   </p>
  
  <p>before the <code>glutMainLoop</code> i got this error   </p>
  
  <p><code>GLUT Warning: glutInit being called a second time.</code>   </p>
  
  <p>and only the OpenCV windows been showed.</p>
  
  <p>How is possibile to have this? (maybe without using the OpenCV processed data as texture for another GLUT window) </p>