Search Unity

  1. Unity support for visionOS is now available. Learn more in our blog post.
    Dismiss Notice

Question Most CPU intense HDRP features?

Discussion in 'Graphics Dev Blitz Day 2023 - Q&A' started by KamilVDono, May 24, 2023.

  1. KamilVDono

    KamilVDono

    Joined:
    Jun 2, 2016
    Posts:
    11
    Hey,

    Could you list/rate most CPU intense HDRP features?
    In our project most CPU time is spend on rendering and it's hard to find, which HDRP features makes it so slow. It would be awesome to hear from Unity devs, which features and why are expensive on CPU side.

    Thanks for response
     
  2. SebLagarde

    SebLagarde

    Unity Technologies

    Joined:
    Dec 30, 2015
    Posts:
    932
    Hi, most of the time there is not a single feature that is the root cause but plenty of differents elements.
    I will suggest you open the unity profiler to identify what is slow, or you can use the FrameSettings in the Rendering Debugger to enable/disable any features and see the influences it have on your performance.
     
  3. KamilVDono

    KamilVDono

    Joined:
    Jun 2, 2016
    Posts:
    11
    Hey @SebLagarde

    I was thinking about some list like:

    First to look at:
    * X
    * Y
    Then it would be good to check:
    * Z
    * W
    If nothing helped then do slow whole settings wide checks
    Profiling of HDRP is not clear where the issue is:
    upload_2023-5-26_16-51-10.png
    upload_2023-5-26_16-51-47.png

    But I need to say that, going thru Rendering Debugger could be a easier way, which I never tried.

    Thanks