private static Vertex[] CreateVertices()
{
var top = new Vertex { Position = new Vector3(0f, 1f, 0f), Color = new Color4(01f, 0f, 0f) };
var left = new Vertex { Position = new Vector3(-1f, -1f, 0f), Color = new Color4(0f, 1f, 0f) };
var right = new Vertex { Position = new Vector3(1f, -1f, 0f), Color = new Color4(0f, 0f, 1f) };
return new[] { top, right, left };
}