# File rdoc-sources/FXGLVisual.rb, line 70
    def initialize(app, flags) # :yields: theGLVisual

    #
    # Test if OpenGL is possible, and what level is supported.
    # Because of remote display capability, the display server may
    # support a different level of OpenGL than the client; it may
    # even support no OpenGL at all!  This function returns the lesser
    # of the client support level and the display server support level.
    #
    def FXGLVisual.supported?(app); end

    # Return +true+ if double-buffered
    def doubleBuffered?; end

    # Return +true+ if stereo
    def stereo?; end
    
    # Return +true+ if hardware-accelerated
    def accelerated?; end
    
    # Return +true+ if this visual "swaps" by copying instead of flipping buffers.
    def bufferSwapCopy?; end
  end