public override void Dispose()
{
if ( Root.Instance != null && Root.Instance.RenderSystem != null )
{
GLESRenderSystem rendersystem = (GLESRenderSystem)Root.Instance.RenderSystem;
//Javax.Microedition.Khronos.Egl.EGLContext.EGL11.EglDestroyContext( _eglDisplay, _context );
rendersystem.UnregisterContext( this );
}
}