ryujinx/Ryujinx.Ava/UI/Controls/RendererHost.axaml

<UserControl 
    xmlns="https://github.com/avaloniaui"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
    mc:Ignorable="d" 
    d:DesignWidth="800" 
    d:DesignHeight="450"
    x:Class="Ryujinx.Ava.UI.Controls.RendererHost"
    Focusable="True">
</UserControl>