Search Unity

  1. Welcome to the Unity Forums! Please take the time to read our Code of Conduct to familiarize yourself with the forum rules and how to post constructively.
  2. Unite 2023 Registrations are now LIVE! We are thrilled to announce that Unite 2023 Registration is now live and open for all!
    Dismiss Notice
New Forum User Notice Unite 2023 Registrations are now LIVE!

Why does SendWillRenderCanvases take up so much frame time?

Discussion in 'UGUI & TextMesh Pro' started by quitebuttery, Nov 21, 2014.

  1. quitebuttery

    quitebuttery

    Joined:
    Mar 12, 2011
    Posts:
    323
    Is it me, or is the new GUI kind of a performance hog--at least on Android? I noticed SendWillRenderCanvases is taking up like 14% of my frame time in the profiler. I've got a few simple control panels in a cockpit which are rendered using Canvases. Is there any way to cut this function's execution time down via the design of my UI?
     
    quitebuttery, Nov 21, 2014
    #1

  2. quitebuttery

    quitebuttery

    Joined:
    Mar 12, 2011
    Posts:
    323
    To answer my own question--I was activating/deactivating a lot of GUI objects unnecessarily in that frame. I guess it creates a lot of setup overhead. Fixed it and now it doesn't show up in my profiler.
     
    quitebuttery, Nov 21, 2014
    #2

  3. mushdevstudio

    mushdevstudio

    Joined:
    May 9, 2014
    Posts:
    37
    When I disabled Pixel Perfect on the canvas the frame rate drop went away.
     
    mushdevstudio, Jan 10, 2019
    #3

  4. clintonb

    clintonb

    Joined:
    Dec 14, 2013
    Posts:
    15
    The second half of this talk goes into depth on fixing UI performance problems:
    . I know it talks about activating/deactivating things. It also talks about having separate subcanvasses that update independently. It's well worth a watch.
     
    clintonb, Jan 10, 2019
    #4
    Baste likes this.