Question

I want to draw a triangle as a border background. One way of doing this is by using a DrawingBrush, but at smaller sizes anti-aliasing is distorting the triangle and making it blurry. How can I disable anti-aliasing?

<Border>
    <Border.Background>
        <DrawingBrush>
            <DrawingBrush.Drawing>
                <GeometryDrawing Brush="Red">
                    <GeometryDrawing.Geometry>
                        <PathGeometry>
                            <PathGeometry.Figures>
                                <PathFigureCollection>
                                    <PathFigure IsClosed="True" StartPoint="0,3" IsFilled="True">
                                        <PathFigure.Segments>
                                            <LineSegment Point="3,0" />
                                            <LineSegment Point="6,3" />
                                        </PathFigure.Segments>
                                    </PathFigure>
                                </PathFigureCollection>
                            </PathGeometry.Figures>
                        </PathGeometry>
                    </GeometryDrawing.Geometry>
                </GeometryDrawing>
            </DrawingBrush.Drawing>
        </DrawingBrush>
    </Border.Background>
</Border>

I’ve tried setting RenderOptions.EdgeMode=”Aliased” and SnapsToDevicePixels=”true” on all possible elements, but that hasn’t worked…

Edit:
This is what the drawn triangle looks like at Width=17; Height=12 (zoomed to 800%):

As you can see the edges are anti-aliased. All the usual options for disabling anti-aliasing don’t seem to be working…

Answer 1

Considering there haven’t been any more replies, then it seems that the answer is – it’s impossible.