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  1. Qt
  2. QTBUG-111949

WASM, (input)lag on higher resolutions (~4k)

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Details

    • Bug
    • Resolution: Cannot Reproduce
    • P3: Somewhat important
    • None
    • 6.4.2
    • GUI: Graphics Performance
    • None
    • Version 111.0.5563.65 (Offizieller Build) (64-Bit)
      emsdk 3.1.14
      AMD Ryzen 9 3900x / 64GB RAM / NVidia GTX 950
      Windows 11 22H2 (Build 22621.1265)
    • WebAssembly

    Description

      The attached example react´s bad to input(typing in the textfield) on a 4k display. If I reduce the size of the browser it improves. This becomes worse for an actual application but this is the simplest example where I could reproduce the issue.

      If I change the code in the example and remove the background rectangle the performance improves as well.

      Is this a bug, my system or does this meet expected performance right now?

      Attachments

        1. Example.zip
          1 kB
        2. Profile-20230317T093556.zip
          772 kB
        3. Trace-20230901T150504.zip
          532 kB
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          People

            sorvig Morten Sørvig
            Marscho Marscho
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            1 Vote for this issue
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            Dates

              Created:
              Updated:
              Resolved:

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