BackBuffer
virtual RenderingBuffer* BackBuffer() const;
return BackBuffer();
RenderingBuffer* backBuffer = BackBuffer();
RenderingBuffer* backBuffer = BackBuffer();
virtual RenderingBuffer* BackBuffer() const = 0;
virtual RenderingBuffer* BackBuffer() const;
virtual RenderingBuffer* BackBuffer() const;
virtual RenderingBuffer* BackBuffer() const;
virtual RenderingBuffer* BackBuffer() const;