Digital Foundry Article Technical Discussion Archive [2014]

Discussion in 'Console Technology' started by DieH@rd, Jan 11, 2014.

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  1. Shortbread

    Shortbread Island Hopper
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    Digital Foundry: Hands on with the Destiny PS4 beta

     
  2. zed

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  3. djskribbles

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    I noticed the juddery framerate in the alpha and was hoping Bungie would fix that for the beta, but I still noticed it. Hopefully DF can reach out to Bungie and they can fix it.
     
  4. HTupolev

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    Bungie is at least aware of it. Urk responded on the first page of the gaf thread for this article, saying they might even fix it during the beta.
     
  5. djskribbles

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    Thanks. Great news.

    It's not horrible, but it's not as smooth as it should be.
     
  6. London-boy

    London-boy Shifty's daddy
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    I do wonder why a lot of games on PS4 (don't know about X1) seem to be released with this very strange frame ordering bug, or whatever they call it, which creates the judder even though the game is running at a stable framerate. So very odd.
     
  7. TheAlSpark

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    It's been an issue for Bungie games for a long while now, actually - engine issue. Same thing happened with NFS at launch, but it was fixed.
     
  8. Globalisateur

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    I wonder if it's not a way to hide framerate drops: instead of a regular framerate drop (or screen tearing on a double buffer) they do this instead because on the video this frame pacing issue is not constant or even periodic, it's apparently mainly occuring during the most action packed scenes.
     
  9. Shortbread

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    AMD GPU's always (well not always, but you get my drift), had/has some type of weird frame pacing issues. Not saying it's completely hardware related dealing with Destiny, but the driver/API could be effecting Destiny engine slightly. Just a guess...
     
  10. London-boy

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    If that's true, that's teally not ideal. How can that happen, if it's a known issue?
     
  11. Shortbread

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    Hopefully I'm wrong about the situation, it's just a guess. AMD's multi-GPU setups tend to exhibit the issue more than anything… however, its single GPU’s aren’t totally without frame pacing issues as well. There's a sh** load of articles about AMD’s situation… but it has gotten better over time.

    http://www.anandtech.com/show/7195/amd-frame-pacing-explorer-cat138
     
  12. 3dilettante

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    The pacing concerns in that article are related to the PC driver and DX runtime model.
    The console versions should leave more discretion--and blame--to the software.
     
  13. imaxx

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    yeah, I dont really understand wtf the GPU has to do with these software issues.
    Sony has its own GPU driver - the gnc(x) or such, dont remember atm- which is much thinner than AMD counterpart for windows - likely MB thinner.
     
  14. Shortbread

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    True.

    And excuse my ignorance on the subject… but, doesn’t AMD still provide technical support (drivers/updates) dealing with its GPU’s within the XB1/PS4? I’m not talking in the framework model of the PC… but more so any improvements that directly addresses any broad issue(s) specifically affecting their IPs.

    Edit: Not that I'm saying its hardware related, could be strictly software related.
     
    #1654 Shortbread, Jul 19, 2014
    Last edited by a moderator: Jul 20, 2014
  15. 3dilettante

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    Various stories about driver updates and SDK changes seem to put the console makers in the driver seat for much of it, although AMD could still be involved.
     
  16. imaxx

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    Why? Both has custom drivers. AMD is not involved it those. Updates are likely to refer to the AMD portion's of code they might still use, which is likely to be limited.
    For sure, it's not a driver, given each of them has its own custom driver model.
     
  17. ERP

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    The ICE team wrote the "driver" on PS4, ATI was not involved. I'd imagine the same was true on the MS side of things.
     
  18. Pixel

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    An Anandtech article writes that AMD author the drivers for these consoles.

    ?

    http://www.anandtech.com/show/7371/understanding-amds-mantle-a-lowlevel-graphics-api-for-gcn
     
    #1658 Pixel, Jul 20, 2014
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  19. ERP

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    Then anandtech is incorrect.
    Though I believe the shader compiler is based on AMD code, libgcm etc. were written by the ICE team.
    Obviously AMD provided technical support.
     
  20. Brad Grenz

    Brad Grenz Philosopher & Poet
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    I thought the whole "mono driver" thing implied MS was adapting the Xbox One's driver from the existing AMD GPU DX11 driver code-base. According to them the whole point of the mono driver was that it had been stripped of all the support for other products and configurations.
     
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