WPF - cannot redraw page on Intel 11th Core Iris Xe Integration graphic card

[LMing123]

• What version of the product are you using?

  • Nuget v85.3.130

• What architecture x86 or x64?
  x64

• On what operating system?
  Win10 20H2

• Are you using WinForms, WPF or OffScreen?
  WPF

• What steps will reproduce the problem?

  1. use MinimalExample complied CefSharp.MinimalExample.Wpf
  2. open WPF example on 11th Intel Core cpu whit Iris Xe graphics.
  3. the web page don't auto redraw unless manual resize window.

• What is the expected output? What do you see instead?
  it's not any expected output, just this page doesn't redraw.

• Please provide any additional information below.
  CefSharp.WinForm dosen't have this problem. just WPF have.
  use this code disable WPF hardware acceleration, everything seem normal.

protected override void OnSourceInitialized(EventArgs e)
        {
            base.OnSourceInitialized(e);
            HwndSource source = PresentationSource.FromVisual(this) as HwndSource;
            if (source != null)
                source.CompositionTarget.RenderMode = RenderMode.SoftwareOnly;
        }

• Does this problem also occur in the CEF Sample Application
  NO, only occur in CefSharp.WPF.

[amaitland]

Thanks for the workaround 👍 Have you reported the issue with the WPF team?

Making this as known-issue.

As this doesn't appear to be anything actionable from a CefSharp point of view I'm going to close this.

[LMing123]

Thanks for the workaround 👍 Have you reported the issue with the WPF team?

Making this as known-issue.

As this doesn't appear to be anything actionable from a CefSharp point of view I'm going to close this.

okay, thanks for you reply.

I haven't reported this to the WPF Team, now that I'll report the issue to WPF team.

[amaitland]

Intel reportedly have an updated driver available for download
https://www.intel.com/content/www/us/en/support/articles/000058136/graphics/graphics-for-11th-generation-intel-processors.html