Xbox One graphics are based on a custom-built Direct X 11.1 or Direct X 12 GPU.
Graphics Overviews
Xbox One graphics are based on customized versions of DirectX 11.1 and 12 and a high-performance GPU.
Graphics White Papers
Describes available graphics white papers for Xbox One developers.
Graphics Tools
Xbox One-specific components and tools help with performance and debugging. There are pre-compiled shader tools, and the Xbox Hang Investigation Tool (XHIT). For the ADK, there is Visual Studio Graphics Diagnostics, to analyse the Direct3D pipeline. The Xbox One XDK also includes PIX for Xbox One, which is a tool to aid in CPU and GPU performance and debugging.
Graphics Samples
Describes available graphics samples for developers.