独立渲染到多重采样缓冲区和已解析的帧缓冲区

So im doing some graph drawing using GL_LINE_STRIP's and i am using a multisampled buffer so the lines dont look so jagged. the problem is i have some lines in the background of the graph that act as a legend. The multisampling kind of screws the lines up cause they are meant to be exactly 1 pixel thick, but because of the multisampling, it will sometimes put the line spread over 2 pixels that are slightly dimmer than the original colour, making the lines look different to each other.So im doing some graph drawing using GL_LINE_ST