/// <summary>
/// 给场景中增加光照
/// </summary>
public void AddLightToScene()
{
Light light = new Light(new Vector3D(2, 0, 0), new SampleCommon.Color(0.0f, 0.9f, 0.2f));
mRenderer.AddLight(light);
Material mat = new Material(0.9f, new SampleCommon.Color(0.8f, 0.8f, 0.8f));
mCube.Material = mat;
}