/*! \mainpage OpenGL ES Simple Cube Pbuffer Example
 *
 * \ref intro_sec
 * \n\ref Pre_sec
 * \n\ref Desing_sec
 *
 * <HR>
 *
 * \section intro_sec 1. About this Example
 *
 *  This example is based on SimpleCube example but instead of onscreen window rendering the Pbuffer surface
 *  is used. To create a Pbuffer surface, a config that supports Pbuffers must be chosen.
 *
 *  This example can be extended to any kind of OpenGL ES application, but you might
 *  want to look at the other example applications as well for how to use other,
 *  different kinds of, OpenGL ES features.
 *
 *  Only classes used by this example are the basic UI framework baseclasses. Open GL ES itself is pure C
 *  method call API and doesn't use classes.
 *
 * <HR>
 *
 * \section Pre_sec 2. Prerequisites
 *   To build and run this example you need to have the S60 SDK installed and working correctly on your computer.
 *   You also need basic understanding on how to build S60 applications.
 *
 *   To work with this example application you need basic understanding on how to build S60 applications and
 *   basic undestanding of how Symbian (or COE) UI and application framework works. Also basic knowledge on
 *   OpenGL or OpenGL ES is required if you wish to modify the example.
 *
 *	<HR>
 *
 *  \section Desing_sec 3. Desing and Implemention
 *
 *  A bitmap must be created where content of the Pbuffer surface is copied for displaying.
 *  The surface and the bitmap should be same size. To display the content of the Pbuffer surface the content
 *  is first copied to bitmap in the Draw() method and then rendered to the screen similarly as in
 *  Simple Cube Pixmap example.
 *
 *  \subsection Sub31 3.1 Capabilities
 *
 *  The application has only NONE capability as it only needs the rights to execute and access to the screen.
 *
 *  \subsection Sub32 3.2 ScalabaleUI
 *
 *  All Open GL ES examples support various screen modes. The examples also support changing the screen size while the
 *  application is running.
 *
 */