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">
    <ContentControl
        HorizontalAlignment="Stretch"
        HorizontalContentAlignment="Stretch"
        VerticalAlignment="Stretch"
        VerticalContentAlignment="Stretch"
        Name="View"
        />
</UserControl>