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VR ACC

Discussion in 'ACC General Discussions' started by ledinguelevrai, Feb 22, 2018.

  1. Hello,
    Do you already have tested VR with ACC ?
    If yes, is it possible to say if it is/will be more or less ressource demanding than AC1 ?

    Thank
     
    seb 6th gear and Phil64 like this.

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  3. ears1991

    ears1991 Alien

    Would be cool if they can use nvidia SMP, but sounds like its a bit of a compromise so don't know if they would have done it

    quote from some game dev:
    https://www.reddit.com/r/Vive/comme...hats_stopping_you_from_using_nvidias/dazgvz2/

    edit, seems single pass stereo is the branding name for the tech now, under vrworks: https://developer.nvidia.com/nvidia-vrworks-and-ue4
     
    Blamer likes this.
  4. Tberg

    Tberg Alien

    Since ACC has multiple ligthsources, my guess is it'll be more demanding for sure. Though, UE4 could be handling gfx much better in terms of f.i. post processing, and after Stefano said that physics will go full 64bit and be "limitless", that might balance out some performance issues when cpu is working on physics while trying to keep up with the gpu rendering in VR.

    I expect that 970 is still functional for a VR experience in ACC, but probably forced to lower/lowest settings, which is acceptable. This summer it's been more than 2 years with AC1 in VR with my 970, it has to end somewhere when GFX takes a notch up :)
     
    Pulley and aotto1977 like this.
  5. aotto1977

    aotto1977 Simracer

    As a 1060 VR user, I approve this message. ;-)
     
    Typer likes this.
  6. Rudski

    Rudski Alien

    Question. On the Nvidia site they say the Unreal engine now supports VRWorks and therefore it has SLI support.

    Can someone confirm that's the case because I am in the middle of purchasing video cards and I'm not sure which path to take. If the engine supports SLI I don't have to go spend a bucket load on one video card.
     
    alex bonner and Micii1 like this.
  7. Loren Thomas

    Loren Thomas Rookie

    Another big VR-related question... will it have proper mirrors? The rear-facing camera things AC has are barely acceptable on a monitor, but a massive immersion-breaker in VR.
     
    alex bonner, Turk, Mogster and 3 others like this.
  8. martcerv

    martcerv Alien

    SLI VR I think still needs to be enabled in game by the devs, I don't know how exactly it would work but you also would either want 1 very good car or better still 2 of them assuming VR SLI will be a thing. 2 lower end cards will likely perform worse then 1 high end car the advantage of VR SLI is that currently even at the relatively low resolution of VR the top end cards are unable to get max visual quality and maintain the needed min frame rate so getting 2 high end cards will be more likely to have no issues with current VR headsets and also be useable for new higher res headsets like the Pimax 8K+ that will have no hope with a single 1080ti to give usable frame rates at 2x full 4k which isn't actually 8K or even 8k plus lol but that's another topic.
     
  9. ShredatorFIN

    ShredatorFIN Alien

    Actually this affects also people who use trackIR. I hope too for 3D side mirrors, also fully adjustable (angle) ones
     
  10. BrunUK

    BrunUK Hardcore Simmer

    Edit - replied to wrong post
     
  11. BrunUK

    BrunUK Hardcore Simmer

    I'd assume it's a similar situation to single pass stereo. These features are in a specific VRWorks branch of UE4 so are unlikely to be used by ACC.
     
  12. Rudski

    Rudski Alien


    Thanks for the replies.... Marty you still running those Titans?
     
  13. martcerv

    martcerv Alien

    Nah but have 1080 sli with no vr.
     
  14. bporion

    bporion Rookie

    so is there going to be VR or not ? it not in the description anymore .
     
  15. whereSTheFUhd

    whereSTheFUhd Rookie

    This is, at least, the second time I've seen this notion that running the physics in double-precision 64-bit floating-point arithmetic will somehow improve CPU performance. The switch to 64-bit is nothing more than improving precision; it allows a closer representation of real numbers in the hopes of improving accuracy of the final result. In other words, increasing the significant digits will not somehow increase or make your processing power more efficient.

    If anything, double-precision floating-point calculations should take longer than those with single-precision, however, that's a generalization and, in reality, it depends on the hardware / architecture / cache block size / memory bandwidth and the operations / code / instruction sets utilized - only way to know is to run benchmarks.

    And, no, it was never stated that physics will be 'limitless' full-stop. That was specifically in reference to map size (limitless, at least, in the context of driving simulations), since double-precision increases the significand bits (higher precision) and the exponent bits (greater range between smallest and largest numbers), allowing for the retention of greater accuracy at increased distances from the origin (supposing that they're not using multiple origins like I'd assume in most, if not all, open world games).
     
    Epistolarius, Lord Kunos and mms like this.
  16. Lord Kunos

    Lord Kunos His master's voice. Staff Member KS Dev Team

    that is very correct. It takes slightly longer actually, but not enough to create problems.. for sure it's not a performance win.
     
    Cote Dazur likes this.
  17. Daniel Costa

    Daniel Costa Racer

    The current cpu bottleneck is very intrusive in the VR experience.
    I assume UE4 is cpu multithreaded in nature. But its up to the devs.
    If so, we might start seeing our gpus hitting 100% in VR.

    Actually, seeing teasers that are being release, we will see gpu's hitting 100%, but for entirely other reasons.
     
  18. Psit

    Psit Alien

    My GPU is constantly at 100% in AC...
     
    nate likes this.
  19. Daniel Costa

    Daniel Costa Racer

    1 - Load msi afterburner, detach the log window and maximize it.
    2- Enter any online server with 24 cars and drive the entire first lap. Pit and exit the game.
    3- Post here a screenshot of the entire log showing cpu % gpu % and framerate.
     
  20. MABlosfeld

    MABlosfeld Rookie

    if this is causing problems for you then check vsync, if it is turned off, turn it on.
     
  21. Psit

    Psit Alien

    I don't need to do any of those, i am running a rift and the debug tool says is hitting 0 headroom all the time unless i stop using the pp filters...
     

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