From
http://www.anandtech.com/show/7818/low-level-graphics-api-developments-gdc-2014
“You asked us to do more,” the DirectX session reads. “You asked us to bring you even closer to the metal and to do so on an unparalleled assortment of hardware. You also asked us for better tools so that you can squeeze every last drop of performance out of your PC, tablet, phone and console.”
Notice the word
console with DirectX12 and MS's latest game console is Xbox One and it's powered by AMD GCN.
From
http://blogs.windows.com/windows/b/appbuilder/archive/2013/10/14/raising-the-bar-with-direct3d.aspx
"The Xbox One graphics API is “Direct3D 11.x” and the Xbox One hardware provides a superset of Direct3D 11.2 functionality".
An example of Xbox One's DirectX 11.X superiority over PC's DirectX 11.2
From
http://www.eurogamer.net/articles/d...unlock-more-gpu-power-for-xbox-one-developers
"In addition to asynchronous compute queues, the Xbox One hardware supports two concurrent render pipes,"
Xbox One's APIs supports AMD GCN's multiple ACE units.
From
http://www.tomshardware.com/news/amd-mantle-opengl-directx-gdc-2014,26188.html
"AMD Supports Possible Lower Level DirectX" - tomshardware
“AMD would like you to know that it supports and celebrates a direction for game development that is aligned with AMD’s vision of lower-level, ‘closer to the metal’ graphics APIs for PC gaming,” reports an AMD rep. “While industry experts expect this to take some time, developers can immediately leverage efficient API design using Mantle, and AMD is very excited to share the future of our own API with developers at this year’s Game Developers Conference.” - AMD's response to DirectX 11.2