CSharpGL.Ground.GetVertexAttributeBuffer C# (CSharp) Method

        public VertexBuffer GetVertexAttributeBuffer(string bufferName, string varNameInShader)
        {
            if (bufferName == strPosition)
            {
                if (this.positionBuffer == null)
                {
                    //int length = positions.Length;
                    //VertexBuffer buffer = VertexBuffer.Create(typeof(vec3), length, VBOConfig.Vec3, varNameInShader, BufferUsage.StaticDraw);
                    //unsafe
                    //{
                    //    IntPtr pointer = buffer.MapBuffer(MapBufferAccess.WriteOnly);
                    //    var array = (vec3*)pointer;
                    //    for (int i = 0; i < positions.Length; i++)
                    //    {
                    //        array[i] = positions[i];
                    //    }
                    //    buffer.UnmapBuffer();
                    //}
                    //this.positionBuffer = buffer;
                    this.positionBuffer = positions.GenVertexBuffer(VBOConfig.Vec3, varNameInShader, BufferUsage.StaticDraw);
                }
                return this.positionBuffer;
            }
            else if (bufferName == strColor)
            {
                if (this.colorBuffer == null)
                {
                    //int length = colors.Length;
                    //VertexBuffer buffer = VertexBuffer.Create(typeof(vec3), length, VBOConfig.Vec3, varNameInShader, BufferUsage.StaticDraw);
                    //unsafe
                    //{
                    //    IntPtr pointer = buffer.MapBuffer(MapBufferAccess.WriteOnly);
                    //    var array = (vec3*)pointer;
                    //    for (int i = 0; i < colors.Length; i++)
                    //    {
                    //        array[i] = colors[i];
                    //    }
                    //    buffer.UnmapBuffer();
                    //}
                    //this.colorBuffer = buffer;
                    this.colorBuffer = colors.GenVertexBuffer(VBOConfig.Vec3, varNameInShader, BufferUsage.StaticDraw);
                }
                return this.colorBuffer;
            }
            else
            {
                throw new ArgumentException();
            }
        }