Is documentation for AMD Mantle available somewhere ? I can't find anything on http://developer.amd.com/ Comparision of OpenGL,DirectX and Mantle would be nice, if Mantle is at the same lev...

With the rise of lower-level graphics APIs such as DirectX 12, Mantle and Vulkan, I'm wondering how these interact (if at all) with a Heterogeneous System Architecture (HSA)? As I understand it, s...