Gb.cs

    [StructLayout(LayoutKind.Sequential)]
    public struct GbColor
    {
        public byte R;
        public byte G;
        public byte B;
    }
    
    private readonly GbColor[] _framebuffer = new GbColor[160 * 144];

    // ... rendering 
    GL.Clear(ClearBufferMask.ColorBufferBit);
    GL.RasterPos2(-1, 1);
    GL.PixelZoom(1, -1);
    GL.DrawPixels(160, 144, PixelFormat.Rgb, PixelType.UnsignedByte, _framebuffer);