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wpf 加阴影效果导致内容模糊的问题解决

这个和GPU有关，参考地址

https://www.cplotts.com/2009/02/25/gpu-effects-blurry-text/

产生问题的代码如下：

 1 <Window
 2     x:Class="EffectsAndBlurryText.Window1"
 3     xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
 4     xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
 5     Title="Effects and Blurry Text (Bad)"
 6     Height="300"
 7     Width="500"
 8 >
 9     <Grid>
10         <Border
11             Margin="20"
12             Background="White"
13             BorderBrush="DarkBlue"
14             BorderThickness="3"
15             CornerRadius="25"
16         >
17             <Border.Effect>
18                 <DropShadowEffect Color="DarkGray"/>
19             </Border.Effect>
20             <TextBlock
21                 Text="Why, oh, why is this text blurry?"
22                 FontSize="24"
23                 TextWrapping="Wrap"
24                 Foreground="DarkBlue"
25                 HorizontalAlignment="Center"
26                 VerticalAlignment="Center"
27             />
28         </Border>
29     </Grid>
30 </Window>

解决问题的代码如下：

 1 <Window
 2     x:Class="EffectsAndBlurryText.Window1"
 3     xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
 4     xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
 5     Title="Effects and Blurry Text (Fixed)"
 6     Height="300"
 7     Width="500"
 8 >
 9     <Grid>
10         <Border
11             Margin="20"
12             BorderThickness="3"
13             CornerRadius="25"
14             Background="White"
15             BorderBrush="DarkBlue"
16         >
17             <Border.Effect>
18                 <DropShadowEffect Color="DarkGray"/>
19             </Border.Effect>
20         </Border>
21         <Border
22             Margin="20"
23             BorderThickness="3"
24             CornerRadius="25"
25         >
26             <TextBlock
27                 Text="Ah, now, the text is not blurry."
28                 FontSize="24"
29                 TextWrapping="Wrap"
30                 Foreground="DarkBlue"
31                 HorizontalAlignment="Center"
32                 VerticalAlignment="Center"
33             />
34         </Border>
35     </Grid>
36 </Window>

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原文地址：https://www.cnblogs.com/zsx-blog/p/10671924.html