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  1. Qt
  2. QTBUG-83421

WebEngine 5.13/5.14 rendering issues on Intel Iris Graphics card

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    Details

    • Type: Bug
    • Status: Reported
    • Priority: P2: Important
    • Resolution: Unresolved
    • Affects Version/s: 5.14.1
    • Fix Version/s: None
    • Component/s: WebEngine, WebView
    • Labels:
      None
    • Environment:
      Operating System: Windows 10 Pro 64-bit (10.0, Build 18362) (18362.19h1_release.190318-1202)
      Card name: Intel(R) Iris(R) Plus Graphics

      Attached complete details from dxdiag.
    • Platform/s:
      Windows

      Description

      Running an Angular 9 SPA web application in Qt (static pages loaded in WebEngine/WebView) does result in inconsistent rendering.

      Attached examples (correct / wrong) with inconsistent rendering. These occur when clicking around the application but also when using ALT-TAB to switch between the application and for example windows explorer.

      By default, GPU raster is set to off (can be noticed in Example 2/3).
      Also, tested with both Qt 5.13.0 and Qt 5.14.1 and same issues appear,

      Note also the 4K resolution that can also be a factor for the rendering issues (attached complete dxdiag for further investigations).

      For debugging, we've used:

      • Enabled Developer tools (no errors reported)
      • QTWEBENGINE_CHROMIUM_FLAGS to enable-gpu-rasterization ( slight improvements - Example 4/5)
      • disable-gpu Command-Line for Qt (did show significant improvements, issue seems solved)

       

      As a workaround, is there any way we can detect graphic card capabilities so we can disable GPU in certain configurations (like the one presented).

       

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            Assignee:
            qt_webengine_team Qt WebEngine Team
            Reporter:
            gudrunb Gudrun Bonte
            Votes:
            1 Vote for this issue
            Watchers:
            4 Start watching this issue

              Dates

              Created:
              Updated:

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