public void DefaultDepthStencilStateIsValid()
{
// Arrange.
var device = new Device();
var depthStencilState = new DepthStencilState(device, DepthStencilStateDescription.Default);
// Act / Assert.
Assert.That(depthStencilState.DepthTestPasses(0.3f, 0.5f), Is.True);
Assert.That(depthStencilState.DepthTestPasses(0.5f, 0.5f), Is.False);
Assert.That(depthStencilState.DepthTestPasses(0.7f, 0.5f), Is.False);
}