public void VertexBuffer_OverWrite_Test() { var vb = new VertexBuffer<TransformedColoredVertex>(Device); vb.Write(new[] { new TransformedColoredVertex() { Position = Vector4.Zero }, new TransformedColoredVertex() { Position = new Vector4(0, 1, 2, 1) } }); vb.OverWrite(new[] { new TransformedColoredVertex() { Position = Vector4.Zero } }); Assert.AreEqual(1, vb.Count); }