glutSwapBuffers  - swaps the buffers of the current window
       if double buffered.

SYNTAX

       void glutSwapBuffers(void);

DESCRIPTION

       Performs a buffer swap on the layer in use for the current
       window.   Specifically,  glutSwapBuffers promotes the con-
       tents of the back buffer of the layer in use of  the  cur-
       rent  window  to  become the contents of the front buffer.
       The contents of the back buffer then become undefined. The
       update  typically  takes place during the vertical retrace
       of the monitor, rather than  immediately  after  glutSwap-
       Buffers is called.

       An  implicit  glFlush is done by glutSwapBuffers before it
       returns.  Subsequent OpenGL commands can be issued immedi-
       ately  after calling glutSwapBuffers, but are not executed
       until the buffer exchange is completed.

       If the layer in use  is  not  double  buffered,  glutSwap-
       Buffers has no effect.

SEE ALSO

       glutPostRedisplay, glutDisplayFunc

AUTHOR

       Mark J. Kilgard (mjk@nvidia.com)