Silverlight: Bug with RadialGradientBrush OpacityMask
.NET,
Silverlight,
Technical stuff
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Update: Just posted this at http://silverlight.net/forums/t/6486.aspx
I stumbled upon a bug in Silverlight today related to the way it handles OpacityMasks with a RadialGradientBrush.
Try the following code:
<Canvas Background="Red"
Canvas.Top="0" Canvas.Left="0"
Width="320" Height="240">
<Canvas.OpacityMask>
<RadialGradientBrush>
<GradientStop Offset="0" Color="#FF000000"/>
<GradientStop Offset="1" Color="#00000000"/>
</RadialGradientBrush>
</Canvas.OpacityMask>
</Canvas>
<Rectangle Fill="Red"
Canvas.Top="0" Canvas.Left="320"
Width="320" Height="240">
<Rectangle.OpacityMask>
<RadialGradientBrush>
<GradientStop Offset="0" Color="#FF000000"/>
<GradientStop Offset="1" Color="#00000000"/>
</RadialGradientBrush>
</Rectangle.OpacityMask>
</Rectangle>
This code uses the same RadialGradientBrush as OpacityMask in a Rectangle and in a Canvas. However, when you run that code into Silverlight (I have the latest version installed, V1.1.20926.0), you get the following picture:
Note that running the exact code in a WPF window creates the following scene, which is correct:
