A few days ago, the Rainway beta became available on Xbox One. Unfortunately, it was pulled yesterday at the request of Microsoft. Luckily, the team is working with Microsoft to bring the beta back to Xbox One. We don't know anything about that at the moment.
Towards the beginning of this year, a service called Rainway made headlines by announcing that it would allow PC game to stream to Xbox One. There are ways to stream PC games to Xbox One — like through Miracast — but it's very laggy.