OpenTK.Platform.X11.Glx.GetConfig C# (CSharp) Method

        public static extern int GetConfig(IntPtr dpy, ref XVisualInfo vis, GLXAttribute attrib, out int value);
        #region glXChooseVisual

        private static GraphicsMode CreateGraphicsMode(IntPtr display, ref XVisualInfo info)
        {
            // See what we *really* got:
            int r, g, b, a;

            Glx.GetConfig(display, ref info, GLXAttribute.ALPHA_SIZE, out a);
            Glx.GetConfig(display, ref info, GLXAttribute.RED_SIZE, out r);
            Glx.GetConfig(display, ref info, GLXAttribute.GREEN_SIZE, out g);
            Glx.GetConfig(display, ref info, GLXAttribute.BLUE_SIZE, out b);
            int ar, ag, ab, aa;

            Glx.GetConfig(display, ref info, GLXAttribute.ACCUM_ALPHA_SIZE, out aa);
            Glx.GetConfig(display, ref info, GLXAttribute.ACCUM_RED_SIZE, out ar);
            Glx.GetConfig(display, ref info, GLXAttribute.ACCUM_GREEN_SIZE, out ag);
            Glx.GetConfig(display, ref info, GLXAttribute.ACCUM_BLUE_SIZE, out ab);
            int depth, stencil, samples, buffers;

            Glx.GetConfig(display, ref info, GLXAttribute.DEPTH_SIZE, out depth);
            Glx.GetConfig(display, ref info, GLXAttribute.STENCIL_SIZE, out stencil);
            Glx.GetConfig(display, ref info, GLXAttribute.SAMPLES, out samples);
            Glx.GetConfig(display, ref info, GLXAttribute.DOUBLEBUFFER, out buffers);
            int st;

            Glx.GetConfig(display, ref info, GLXAttribute.STEREO, out st);

            // Note: Glx.GetConfig return buffers = 0 (false) or 1 (true).
            // OpenTK expects buffers = 1 (single-) or 2 (double-buffering),
            // so increase the GLX value by one.
            return(new GraphicsMode(info.VisualID, new ColorFormat(r, g, b, a), depth, stencil, samples,
                                    new ColorFormat(ar, ag, ab, aa), buffers + 1, st != 0));
        }