glNext session: @thekhronosgroup needed a starting point, and AMD came to us with Mantel spec, said do what you want, no strings attached.
— Scott Wasson (@scottwasson) March 5, 2015
AMD's Mantle initiative will be pretty short-lived as it has served its purpose, the firm told developers earlier this week that they now need to focus on DirectX 12 and Vulkan instead.