Using SKSwapChainPanel nuget package V3-Preview 2.1 in WinUI3 Throws an Exception: AccessViolationException

[AmitParmar2005]

Description

Hi Friends,

First of all thank you so much for porting SKSwapChainPanel to WinUI3. I have been waiting for it for very long time.

To test new functionalities, I created a simple program which uses SKSwapChainPanel. I have installed Skiasharp.Views.WinUI (3.0.0-preview 2.1) nuget package. But, when I run the application, I get System.AccessViolationException: 'Attempted to read or write protected memory.

Seems, I have installed all required packages.

I have also build and install angle with vcpkg. Without any luck.

Can somebody please help me what I am missing here? Please let me know if you want me to upload project.

Thanks and Regards, Amit

Code

The best way to share code for larger projects is a link to a GitHub repository: https://github.com/user/repo/tree/bug-123

But, you can also share a short block of code here:

// some C# code here

You can also share some XAML:

<!-- xaml code here -->

<Window x:Class="WINUI_SkiaSharp_SKSwap_Test.MainWindow" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:local="using:WINUI_SkiaSharp_SKSwap_Test" xmlns:d="http://schemas.microsoft.com/expression/blend/2008" xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" xmlns:skia="using:SkiaSharp.Views.Windows" mc:Ignorable="d">

<Grid Name="mygrid">
    <StackPanel>
        <skia:SKSwapChainPanel Name="canvas" Height="200" Width="200"/>
    </StackPanel>
    <StackPanel Orientation="Horizontal" HorizontalAlignment="Center" VerticalAlignment="Center">
        <Button x:Name="myButton" Click="myButton_Click">Click Me</Button>
    </StackPanel>
</Grid>

Expected Behavior

I should not throw an expception

Actual Behavior

Throws an exception

Version of SkiaSharp

3.x (Alpha)

Last Known Good Version of SkiaSharp

2.88.2 (Previous)

IDE / Editor

Visual Studio (Windows)

Platform / Operating System

Windows

Platform / Operating System Version

Windows 10

Devices

Windows 10 Laptop

Relevant Screenshots

No response

Relevant Log Output

No response

Code of Conduct

• [X] I agree to follow this project's Code of Conduct

[mattleibow]

You should not install any other ANGLE library - it is included in the package.

Let me know if removing ANGLE and rebuilding after deleting the bin/obj fixes this.

[TopperDEL]

I'm running into the same problem. All I did was: create a new WinUI-project (in this case a Uno-App), add the SkiaSharp.Views.Uno.WinUI-package and the following code:

xmlns:skia="using:SkiaSharp.Views.Windows"
<skia:SKSwapChainPanel PaintSurface="SKSwapChainPanel_PaintSurface" Height="200" Width="200"/>

Then I get the exact same error as mentioned above.

[AmitParmar2005]

I was able to make it running. Dont install Uno package. Install WinUI Package. Here's the screenshot. Please let me know if you want me to upload entire project.

[TopperDEL]

Thanks @AmitParmar2005 - but that does not seem to help in my case. I don't get the SKSwapChainPanel to work on Uno. I tried adding SkiaSharp itself, switchting to preview 2.1 (like you have above) - but none works. I always get the error above as soon as I add an SKSwapChainPanel-Control to my page.

[AmitParmar2005]

Try the attached zip file. Its very simple working sample. Let me know if you still have any issues.

WinUI3_SKSwap_Test.zip

[TopperDEL]

That works here, too. But I don't get it to work together with Uno-platform.

[AmitParmar2005]

I am not sure about Uno-Platform. I never worked on it. I will check it out and get back to you.

[TopperDEL]

Awesome, thanks!