Xbox One: DirectX 11.1+ AMD GPU , PS4: DirectX 11.2+ AMD GPU what's the difference?

But I'm sure they meant the "CIK"/GCN1.1 version of IP. The mentioned features match.

Tiled Resources tier 2, a feature of DX11.2, which comes in two slightly different versions. Tier 2 is the more exhaustive support, but it's not completely clear why the original GCN can't support it too, as it should be capable of at least the main features of Tier 2. Must be some detail in the implementation (or the GCN ISA documentation is not entirely correct).

 

But what are the features? Or should I say, what are the features of tier 2 relevant to the consoles?

 

HD 8000 series is an OEM product stack that primarily leverages HD 7000 series products.

 

well isnt the 8000 series simply the 7000 series for oem?

 

What does that mean "primarily leverages" ?

 

I thought the 7790 uses Bonaire?

 

D3D11_TILED_RESOURCES_TIER enumeration

 

Thanks, so basically tier 2 is support for multiple tile sizes?

 

No. Tile size is always 64kB. The dimensions in texel space are always variable and depend on the texture format.

 

http://blogs.windows.com/windows/b/appbuilder/archive/2013/10/14/raising-the-bar-with-direct3d.aspx

 

We now have confirmation that Dx11.x is actually DX 11.2+

 

Cranky, all GCN cards support D3D11.2. It is a question of Tier 1 vs Tier 2 support.

 

You missed my point. DX11.x is a higher, more comprehensive, more advanced DX than DX11.2 which is in GCN. Forget the tier 1 or tier 2 business, the question is if 11.x is tier 3 (if such a thing exists).

 

I doubt there is a tier 3, but its good point that GCN goes beyond the DX spec.

 

The x in DX11.x actually stands for xbox. MS explained it this week that it's not a numerical x.
It's a DX11.2+ part, like every amd gcn part is.
The plus just means their exposing parts that aren't exposed in pc dx11.

 

In addition to what Jay said, its also extremely likely that whatever functionality beyond DX11.2 is exposed by DX11.x will also be exposed by Mantle for PC based GCN chips so its basically a wash (unless your an nvidia gamer).

 

Actually there is no data to support that assumption. We don't know how much customization that MS has placed into the SOC. What you described is worst case scenario which is no MS customization. That could be the case, or the superset of features could include things that even the 290 doesn't have. To me most likely scenario is the only 260 and 290 have same features as the xbone and not the older cards.

 

I would say there's a lot more supporting evidence than your original post:

You made it sound like its beyond GCN 1.1 or even 2. Do we even know what GCN the 290 is for sure? Has it been confirmed it's GCN 2.0 and not GCN1.1?

Regarding the bit I bolded: There all GCN including XB1, they said it was sea islands based.
All MS has talked about is tiled resources and that DX11.x is a superset of DX11.2 which can easily be covered by having lower level access to the GCN architecture.

I'm not saying they have not made any modifications, but we have no reason to believe that they aren't optimisation for the the XB1 architecture, which is far from a worst case scenario. That's not a bad thing, just not what you was saying.

http://blogs.windows.com/windows/b/appbuilder/archive/2013/10/14/raising-the-bar-with-direct3d.aspx