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Resolved I cannot enable Raytracing although I have capable HW/OS

Discussion in 'High Definition Render Pipeline' started by tr_lineas, Oct 12, 2021.

  1. tr_lineas

    tr_lineas

    Joined:
    Feb 27, 2018
    Posts:
    14
    Hi,

    I'm not able to activate DXR support in HDRP. After switching to DirectX 12 and restarting the editor the Render Pipline Wizard writes "Your hardware and/or OS don't support DXR!" to the console. I debugged the code and it's
    Code (CSharp):
    1. SystemInfo.supportsRayTracing
    that returns false. Which is odd because I have a NVIDIA GeForce RTX 2080 Ti installed. And Windows 10 and NVIDIA drivers are up to date too.

    Tested with Unity 2020.3.18f (HDRP 10.6.0 and 10.7.0) and Unity 2021.2.0b21 (HDRP 12.0.0).

    Any ideas?
     
  2. HIBIKI_entertainment

    HIBIKI_entertainment

    Joined:
    Dec 4, 2018
    Posts:
    566

    Are you able to complete the Raytracing setup in the HDRP wizard under the DXR tab?
    Or is it all grated out because of that error.

    Raytracing is supported from the GTX cards ( software simulation, minimum 1660) and obviously any card with RT cores so totally no reasons to be throwing you an error.
    Pretty sure there's not a huge motherboard limit either.

    I wonder if this has anything to do with the studio Vs game based drivers?

    Regardless
    It's worth going through Pierre's video and seeing how far you can get before you're blocked as there are a few steps to take.
     
  3. tr_lineas

    tr_lineas

    Joined:
    Feb 27, 2018
    Posts:
    14
    I cannot finish the ray tracing setup. After the editor restart only the "DXR resources" fix button is left. Clicking it will print the error to the console.

    I'm using the Game Ready drivers.

    I watched the video can't get past the wizard.
     
  4. HIBIKI_entertainment

    HIBIKI_entertainment

    Joined:
    Dec 4, 2018
    Posts:
    566
    That is bizarre.
    are there any other errors for the DXR resources, like drive full?

    You could also double-check the card status with GPU-Z
    all the technologies with your particular card should have ticks to show they have been enabled/supported system-wide.(see attached)

    i can't honestly see why it wouldn't be, but it at least eliminates any system issue possibilities.
     

    Attached Files:

  5. chap-unity

    chap-unity

    Unity Technologies

    Joined:
    Nov 4, 2019
    Posts:
    718
    One thing that is taken into account in "SystemInfo.supportsRayTracing" that hasn't been mentionned yet is operating system version.
    To return true (and be supported), Windows 10 version needs to be at least 1809. Maybe it's that ?
     
    fuzzy3d and pierred_unity like this.
  6. tr_lineas

    tr_lineas

    Joined:
    Feb 27, 2018
    Posts:
    14
    It seems to be the Windows 10 version! I have 1803 and GenZ says ray tracing not supported. So I will look into this.

    Thanks guys!
     
  7. tr_lineas

    tr_lineas

    Joined:
    Feb 27, 2018
    Posts:
    14
    It's now working! Thanks!