Portability between Windows 10 and Xbox One is certainly a great benefit, but as others have pointed out, Windows 10's adoption rate and the willingness/ability of developers to utilize DX12 features will have an impact on how many "DirectX12-ready" games we will see.
My question is how the PS4 plays into this and how easy it is to port from DirectX11 to DirectX12. With 20 million+ boxes out there, it's difficult for devs to ignore it.
Perhaps someone with more knowledge in the development of multiplatform releases could look into these questions:
- The PS4 allows the use of DirectX 11.2, so I imagine that there are cases where devs targeting multiplatform releases might use it as the common denominator; wouldn't this discourage developers from jumping to DX12 in the first place, along with the previously mentioned concerns?
- Does it make more sense to make the PS4 the lead platform and then port to DX12?
- Perhaps there are benefits to porting from the PS4 if its devkit already reaps the CPU-bound benefits of DX12?