uffers are written.
                        If there are no right color buffers,
                        only the front left and back left color buffers are written.
                        If there are no right or back color buffers,
                        only the front left color buffer is written.
                    </p></dd></dl></div><p>
            If more than one color buffer is selected for drawing,
            then blending or logical operations are computed and applied independently
          