Avalonia/samples/RenderDemo/Pages/DrawingPage.xaml

<UserControl
    xmlns="https://github.com/avaloniaui"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    x:Class="RenderDemo.Pages.DrawingPage">
  <UserControl.Styles>
    <Style>
      <Style.Resources>
        <DrawingGroup x:Key="Bulb">
          <DrawingGroup.Transform>
            <MatrixTransform Matrix="1,0,0,1,0,-1028.4" />
          </DrawingGroup.Transform>
          <DrawingGroup>
            <DrawingGroup.Transform>
              <MatrixTransform Matrix="1,0,0,1.25,-10,1031.4" />
            </DrawingGroup.Transform>
            <GeometryDrawing Brush="#FF7F8C8D"
                             Geometry="F1 M24,14 A2,2,0,1,1,20,14 A2,2,0,1,1,24,14 z" />
          </DrawingGroup>
          <GeometryDrawing Brush="#FFF39C12"
                           Geometry="F1 M12,1030.4 C8.134,1030.4 5,1033.6 5,1037.6 5,1040.7 8.125,1043.5 9,1045.4 9.875,1047.2 9,1050.4 9,1050.4 L12,1049.9 15,1050.4 C15,1050.4 14.125,1047.2 15,1045.4 15.875,1043.5 19,1040.7 19,1037.6 19,1033.6 15.866,1030.4 12,1030.4 z" />
          <GeometryDrawing Brush="#FFF1C40F"
                           Geometry="F1 M12,1030.4 C15.866,1030.4 19,1033.6 19,1037.6 19,1040.7 15.875,1043.5 15,1045.4 14.125,1047.2 15,1050.4 15,1050.4 L12,1049.9 12,1030.4 z" />
          <GeometryDrawing Brush="#FFE67E22"
                           Geometry="F1 M9,1036.4 L8,1037.4 12,1049.4 16,1037.4 15,1036.4 14,1037.4 13,1036.4 12,1037.4 11,1036.4 10,1037.4 9,1036.4 z M9,1037.4 L10,1038.4 10.5,1037.9 11,1037.4 11.5,1037.9 12,1038.4 12.5,1037.9 13,1037.4 13.5,1037.9 14,1038.4 15,1037.4 15.438,1037.8 12,1048.1 8.5625,1037.8 9,1037.4 z" />
          <DrawingGroup>
            <DrawingGroup.Transform>
              <MatrixTransform Matrix="1,0,0,1,9,1045.4" />
            </DrawingGroup.Transform>
            <GeometryDrawing Brush="#FFBDC3C7">
              <GeometryDrawing.Geometry>
                <RectangleGeometry Rect="0,0,6,5" />
              </GeometryDrawing.Geometry>
            </GeometryDrawing>
          </DrawingGroup>
          <GeometryDrawing Brush="#FF95A5A6"
                           Geometry="F1 M9,1045.4 L9,1050.4 12,1050.4 12,1049.4 15,1049.4 15,1048.4 12,1048.4 12,1047.4 15,1047.4 15,1046.4 12,1046.4 12,1045.4 9,1045.4 z" />
          <GeometryDrawing Brush="#FF7F8C8D"
                           Geometry="F1 M9,1046.4 L9,1047.4 12,1047.4 12,1046.4 9,1046.4 z M9,1048.4 L9,1049.4 12,1049.4 12,1048.4 9,1048.4 z" />
        </DrawingGroup>
      </Style.Resources>
    </Style>
  </UserControl.Styles>
  <Grid RowDefinitions="Auto,Auto,Auto"
        ColumnDefinitions="Auto,Auto,Auto,Auto">
    <TextBlock Text="None"
               Margin="3" />
    <Border Grid.Column="0"
            Grid.Row="1"
            VerticalAlignment="Top"
            HorizontalAlignment="Left"
            BorderThickness="1"
            BorderBrush="Gray"
            Margin="5">
      <Image>
        <Image.Source>
          <DrawingImage Drawing="{DynamicResource Bulb}" />
        </Image.Source>
      </Image>
    </Border>
    <TextBlock Text="Fill"
               Margin="3"
               Grid.Column="1" />
    <Border Grid.Column="1"
            Grid.Row="1"
            VerticalAlignment="Top"
            HorizontalAlignment="Left"
            BorderThickness="1"
            BorderBrush="Gray"
            Margin="5">
      <Image Width="100" Height="50" Stretch="Fill">
        <Image.Source>
          <DrawingImage Drawing="{DynamicResource Bulb}" />
        </Image.Source>
      </Image>
    </Border>
    <TextBlock Text="Uniform"
               Margin="3"
               Grid.Column="2" />
    <Border Grid.Column="2"
            Grid.Row="1"
            VerticalAlignment="Top"
            HorizontalAlignment="Left"
            BorderThickness="1"
            BorderBrush="Gray"
            Margin="5">
      <Image Width="100" Height="50" Stretch="Uniform">
        <Image.Source>
          <DrawingImage Drawing="{DynamicResource Bulb}" />
        </Image.Source>
      </Image>
    </Border>
    <TextBlock Text="UniformToFill"
               Margin="3"
               Grid.Column="3" />
    <Border Grid.Column="3"
            Grid.Row="1"
            VerticalAlignment="Top"
            HorizontalAlignment="Left"
            BorderThickness="1"
            BorderBrush="Gray"
            Margin="5">
      <Image Width="100" Height="50" Stretch="UniformToFill">
        <Image.Source>
          <DrawingImage Drawing="{DynamicResource Bulb}" />
        </Image.Source>
      </Image>
    </Border>

    <!-- For comparison -->

    <Ellipse Grid.Row="2"
             Grid.Column="0"
             Width="100"
             Height="50"
             Stretch="None"
             Fill="Blue"
             Margin="5"/>
    <Ellipse Grid.Row="2"
             Grid.Column="1"
             Width="100"
             Height="50"
             Stretch="Fill"
             Fill="Blue"
             Margin="5" />
    <Ellipse Grid.Row="2"
             Grid.Column="2"
             Width="100"
             Height="50"
             Stretch="Uniform"
             Fill="Blue"
             Margin="5" />
    <Ellipse Grid.Row="2"
             Grid.Column="3"
             Width="100"
             Height="50"
             Stretch="UniformToFill"
             Fill="Blue"
             Margin="5" />

  </Grid>
</UserControl>