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#16 NoClipMode

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Posted 28 February 2014 - 13:09

Given that DirectX12 is most likely already a long time into development; isn't it possible they created the custom GPU in the Xbox One so that it also supports DX12?

Seems like a huge fail if they didn't.

Xbox One uses a GPU based on AMD's 7xxx series which are all 11.1, it's not custom and you can't do that anyway, it takes a long time to design a GPU to support the newest version of DX let alone a future version that isn't even anywhere near finished. When the Xbox was in development Microsoft would have been working on DX 11.2 for Win 8.1 anyway. DX 12 would have been in the planning stages. It's not a fail, it's just not a possibility, you just cant do that.

Any future version of DX that has "closer to the metal" developer access would only be something that would benefit PC's anyway. Because developers can already get closer to the metal on the consoles, this has always been the case. AMD created the Mantle graphics API for the PC because DX on PC is a high level API that does not offer low level access right now (not to the same extent as a console anyway) so you always get overhead impacting the performance on PC which makes games run slower. If any future version of DX offers what Mantle does then Mantle will be obsolete and pointless. Of course DX 12 or whatever can offer more features, some of which may or may not work on the DX 11.1 GPU in the X1. But it will always remain a DX 11.1 GPU.




#17 HawkMan

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Posted 28 February 2014 - 13:16

Xbox One uses a GPU based on AMD's 7xxx series which are all 11.1, it's not custom and you can't do that anyway, it takes a long time to design a GPU to support the newest version of DX let alone a future version that isn't even anywhere near finished. When the Xbox was in development Microsoft would have been working on DX 11.2 for Win 8.1 anyway. DX 12 would have been in the planning stages. It's not a fail, it's just not a possibility.
 

 

sigh.



#18 Luc2k

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Posted 28 February 2014 - 15:20

DX10 was not the issue it was the GPU makers not having good drivers ready to take advantage of it.  They dropped the ball with WDDM 1.0 drivers in Vista and so on. DX11 isn't any different from 10 really, it added some minor features but nothing radical for overhead.  The same with 11.1 and 11.2, little changes, what has changed is WDDM and the quality of the GPU drivers.

Excuse my ignorance, but if that is the case, can you name some games that had better performance with DX10 while looking similarly or better than DX9.

 

sigh.

He's probably referring to the underlying technology, not its implementation.



#19 NoClipMode

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Posted 28 February 2014 - 15:36

sigh.

Don't know why you're sighing when you obviously don't know anything.

It's not custom. It's a DX 11.1 part based on AMD's 7xxx series Graphics Core Next architecture. Just like PS4. It's only "custom" in the sense that it's on the same die as the CPU with access to eSRAM. The architecture and DirectX support are exactly the same as a AMD PC GPU from 2 years ago.



#20 JonnyLH

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Posted 28 February 2014 - 16:55

Don't know why you're sighing when you obviously don't know anything.

It's not custom. It's a DX 11.1 part based on AMD's 7xxx series Graphics Core Next architecture. Just like PS4. It's only "custom" in the sense that it's on the same die as the CPU with access to eSRAM. The architecture and DirectX support are exactly the same as a AMD PC GPU from 2 years ago.

The silicon is custom, therefore its a custom chip. If it's not off the shelf, its custom. It doesn't matter what similarities it has to other APUs.

 

EDIT: Are the 15 co-processors on silicon? If so, you've also got an 8 core custom MS in-house DSP processor on there.



#21 HawkMan

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Posted 28 February 2014 - 21:12

The silicon is custom, therefore its a custom chip. If it's not off the shelf, its custom. It doesn't matter what similarities it has to other APUs.

 

EDIT: Are the 15 co-processors on silicon? If so, you've also got an 8 core custom MS in-house DSP processor on there.

 

It's all on the same silicon, and works as part of a single unit, it's based off another architecture, but it's custom in every sense of the word. with features and functions that you won't find on the card it's "based" off of.