Не удается отобразить треугольник, SharpGL

Я пытаюсь отобразить треугольник, используя SharpGL. Результат - черный экран. Что я делаю не так?

XAML:

<Window x:Class="OpenGL_VAO_VBO.MainWindow"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
    xmlns:local="clr-namespace:OpenGL_VAO_VBO"
    xmlns:openGL="clr-namespace:SharpGL.WPF;assembly=SharpGL.WPF"
    mc:Ignorable="d"
    Title="MainWindow" Height="450" Width="800">
<Grid>
    <openGL:OpenGLControl x:Name="Scene" OpenGLInitialized="OpenGLControl_OpenGLInitialized" Resized="OpenGLControl_Resized" OpenGLDraw="Scene_OpenGLDraw" RenderContextType="FBO" DrawFPS="True"/>
</Grid>

Code Behind

    public MainWindow()
    {
        InitializeComponent();

        Verticies = new float [9]
        {
            -1.0f, -1.0f, 0.0f,
             1.0f, -1.0f, 0.0f,
             0.0f,  1.0f, 0.0f,
        };
    }
    private void OpenGLControl_OpenGLInitialized(object sender, SharpGL.SceneGraph.OpenGLEventArgs args)
    {
        OpenGL gl = args.OpenGL;

        gl.Enable(OpenGL.GL_DEPTH_TEST);

        gl.GenBuffers(1, vId);
        gl.BindBuffer(OpenGL.GL_ARRAY_BUFFER, vId[0]);
        gl.BufferData(OpenGL.GL_ARRAY_BUFFER, Verticies, OpenGL.GL_STATIC_DRAW);
        gl.BindBuffer(OpenGL.GL_ARRAY_BUFFER, 0);
    }

    private void OpenGLControl_Resized(object sender, SharpGL.SceneGraph.OpenGLEventArgs args)
    {
        // Get the OpenGL instance.
        OpenGL gl = args.OpenGL;

        // Load and clear the projection matrix.
        gl.MatrixMode(OpenGL.GL_PROJECTION);
        gl.LoadIdentity();

        // Perform a perspective transformation
        gl.Perspective(45.0f, (float)gl.RenderContextProvider.Width /
            (float)gl.RenderContextProvider.Height,
            0.1f, 100.0f);

        // Load the modelview.
        gl.MatrixMode(OpenGL.GL_MODELVIEW);
    }

    private void Button_Click(object sender, RoutedEventArgs e)
    {
        throw new NotImplementedException();
    }

    private void Scene_OpenGLDraw(object sender, SharpGL.SceneGraph.OpenGLEventArgs args)
    {
        OpenGL gl = args.OpenGL;

        gl.Clear(OpenGL.GL_COLOR_BUFFER_BIT | OpenGL.GL_DEPTH_BUFFER_BIT);

        gl.LoadIdentity();

        gl.EnableClientState(OpenGL.GL_VERTEX_ARRAY);
        gl.BindBuffer(OpenGL.GL_ARRAY_BUFFER, vId[0]);
        gl.VertexPointer(3, OpenGL.GL_FLOAT, 0, IntPtr.Zero);
        gl.DrawArrays(OpenGL.GL_TRIANGLES, 0, Verticies.Length);
        gl.DisableClientState(OpenGL.GL_VERTEX_ARRAY);
    }
}

}