[Samples App] Open GL control arent visible.

[Darsh0307]

Current behavior

Whenever running Uno Samples app from 5.5 dev , i am not able to see the Open GL components (GLCanvasElement_Cube and GLCanvasElement_Simple ). This problem is coming with Skia Desktop on Windows. The Artifact was downloaded from the given below link.

https://dev.azure.com/uno-platform/Uno%20Platform/_build/results?buildId=138842&view=artifacts&pathAsName=false&type=publishedArtifacts

I have also shared given below the logs message coming when running Skia desktop on Windows.

Windows PowerShell
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PS C:\Users\DarshPatel\Downloads\skia-generic-samples-app-WinUI\skia-generic-samples-app-WinUI> dotnet SamplesApp.Skia.Generic.dll
dbug: Uno.UI.Runtime.Skia.SkiaHostBuilder[0]
      Host builder Uno.UI.Runtime.Skia.X11HostBuilder is not supported
dbug: Uno.UI.Runtime.Skia.SkiaHostBuilder[0]
      Host builder Uno.UI.Runtime.Skia.FramebufferHostBuilder is not supported
dbug: Uno.UI.Runtime.Skia.SkiaHostBuilder[0]
      Using host builder Uno.UI.Runtime.Skia.WpfHostBuilder
info: Uno.UI.Runtime.Skia.Wpf.UI.Controls.UnoWpfWindow[0]
      Loading icon file [C:\Users\DarshPatel\Downloads\skia-generic-samples-app-WinUI\skia-generic-samples-app-WinUI\Assets\StoreLogo.png] from Package.appxmanifest file
warn: Microsoft.UI.Xaml.FrameworkTemplatePool[0]
      Template pooling is disabled in this build of Uno Platform. See https://github.com/unoplatform/uno/issues/13969
info: SampleControl.Presentation.SampleChooserViewModel[0]
      Found 1277 sample(s) in 117 categories.
fail: Uno.UI.DataBinding.BindingPropertyHelper[0]
      The [ControlName] property getter does not exist on type [SampleControl.Presentation.SampleChooserViewModel]
fail: Uno.UI.DataBinding.BindingPropertyHelper[0]
      The [ControlName] property getter does not exist on type [SampleControl.Presentation.SampleChooserViewModel]
fail: Uno.UI.DataBinding.BindingPropertyHelper[0]
      The [CategoriesString] property getter does not exist on type [SampleControl.Presentation.SampleChooserViewModel]
fail: Uno.UI.DataBinding.BindingPropertyHelper[0]
      The [CategoriesString] property getter does not exist on type [SampleControl.Presentation.SampleChooserViewModel]
fail: Uno.UI.DataBinding.BindingPropertyHelper[0]
      The [Description] property getter does not exist on type [SampleControl.Presentation.SampleChooserViewModel]
fail: Uno.UI.DataBinding.BindingPropertyHelper[0]
      The [Description] property getter does not exist on type [SampleControl.Presentation.SampleChooserViewModel]
fail: Uno.UI.DataBinding.BindingPropertyHelper[0]
      The [ControlType] property getter does not exist on type [SampleControl.Presentation.SampleChooserViewModel]
fail: Uno.UI.DataBinding.BindingPropertyHelper[0]
      The [ControlType] property getter does not exist on type [SampleControl.Presentation.SampleChooserViewModel]
fail: Uno.UI.DataBinding.BindingPropertyHelper[0]
      The [QueryString] property getter does not exist on type [SampleControl.Presentation.SampleChooserViewModel]
fail: Uno.UI.DataBinding.BindingPropertyHelper[0]
      The [QueryString] property getter does not exist on type [SampleControl.Presentation.SampleChooserViewModel]
dbug: Uno.UI.Runtime.Skia.Wpf.Rendering.WpfRendererProvider[0]
      Validating  rendering
warn: Uno.UI.Runtime.Skia.Wpf.Rendering.WpfRendererProvider[0]
      OpenGL failed to initialize, using software rendering
HandleLaunchArguments:
Screenshots path:
Total groups: 1
Current group index: 0
Automated runtime tests output file:
Section changed: SamplesContent
Done loading 00:00:00.3718932

Expected behavior

We should be able to see GLCanvasElement_Cube and GLCanvasElement_Simple both component s in the samples app.

How to reproduce it (as minimally and precisely as possible)

1. Dowload the skia-generic-samples-app-WinUI zip file from the Azure Devops artifacts
2. After downloading Extract the zip file.
3. Open terminal and go the directory where the skia-generic-samples-app-WinUI file is present.
4. In terminal type the given comamnd dotnet SamplesApp.Skia.Generic.dll
5. This will open the samples app
6. Open GLCanvasElement_Cube and GLCanvasElement_Simple both the controls.

Workaround

No response

Works on UWP/WinUI

None

Environment

No response

NuGet package version(s)

No response

Affected platforms

No response

IDE

No response

IDE version

No response

Relevant plugins

No response

Anything else we need to know?

No response

[jeromelaban]

@ramezgerges I think we should be reporting those errors either through events, or with an error message that shows in place in the control itself.

[ramezgerges]

Fixed by #18385. You should see an image with the text "OpenGL error".

[Darsh0307]

Hey @ramezgerges

Still its not showing the text as OpenGL error , I did tried to create the Uno app using 5.5.29 as the Uno UI CLI
https://dev.azure.com/uno-platform/Uno%20Platform/_build/results?buildId=144747&view=results

[agneszitte]

@jeromelaban, @ramezgerges should we re-open this issue then based on what @Darsh0307 shared above ?

[agneszitte]

After talking with @ramezgerges, we will keep the issue open until we understand why @Darsh0307 is still able to reproduce the issue on his side

[jeromelaban]

@ramezgerges Looking at my environment, the following exception happens:

fail: Microsoft.UI.Xaml.UIElement[0]
      OnElementLoaded failed in FrameworkElement
      System.InvalidOperationException: No function was found with the name glGenBuffers.
         at Uno.UI.Runtime.Skia.Wpf.Extensions.WpfNativeOpenGLWrapper.GetProcAddress(String proc) in C:\a\1\s\src\Uno.UI.Runtime.Skia.Wpf\Extensions\WpfNativeOpenGLWrapper.cs:line 138
         at Uno.WinUI.Graphics3DGL.GLCanvasElement.Silk.NET.Core.Contexts.INativeContext.GetProcAddress(String proc, Nullable`1 slot) in C:\a\1\s\src\AddIns\Uno.WinUI.Graphics3DGL\GLCanvasElement.cs:line 327
         at Silk.NET.OpenGL.GL._B.get__AFB()
         at Silk.NET.OpenGL.GL.GenBuffers(UInt32 n, UInt32* buffers)
         at Silk.NET.OpenGL.GL.GenBuffer()
         at Uno.WinUI.Graphics3DGL.GLCanvasElement.FrameBufferDetails..ctor(GL gl, Size renderSize) in C:\a\1\s\src\AddIns\Uno.WinUI.Graphics3DGL\GLCanvasElement.FrameBufferDetails.cs:line 21
         at Uno.WinUI.Graphics3DGL.GLCanvasElement.UpdateFramebuffer() in C:\a\1\s\src\AddIns\Uno.WinUI.Graphics3DGL\GLCanvasElement.cs:line 274
         at Uno.WinUI.Graphics3DGL.GLCanvasElement.OnLoaded(Object sender, RoutedEventArgs routedEventArgs) in C:\a\1\s\src\AddIns\Uno.WinUI.Graphics3DGL\GLCanvasElement.cs:line 185
         at Microsoft.UI.Xaml.FrameworkElement.<OnFwEltLoaded>g__InvokeLoadedWithTry|333_1() in C:\a\1\s\src\Uno.UI\UI\Xaml\FrameworkElement.Layout.crossruntime.cs:line 111

We should be able to handle this properly, and probably provide a way to customize the content that shows up when OpenGL is not supported properly. We could provide an ErrorTemplate property or similar that the control would show in case of an error.