The graphics source code for Xbox Series X has leaked online
https://www.developer-tech.com/news/2020/mar/26/graphics-source-code-xbox-series-x-leaked-online/
Microsoft has been quite forthcoming with information about its upcoming console, but it probably wasn’t ready for its graphics source code to be leaked.
The Series X uses a custom GPU by AMD which supports ray-tracing. AMD’s current RDNA flagship, the Radeon RX 5700 XT, features 2,560 Stream Processors across 40 compute units. For comparison, the Series X has 3,328 Stream Processors spread across 52 compute units.