这些扩展提供了诸如位图操作，画笔，抗锯齿和越来越复杂的Primitive渲染中不同像素深度格式，Alpha Blend的支持。
Some of these extensions included different pixel depth formats, alpha blending support in bitmap operations and brushes, anti-aliased primitive rendering and more complex primitive rendering.
为了解决此问题，WPF 提供了一种将可视化树中的对象边缘与设备像素“对齐”的方法，从而消除了抗锯齿产生的软边缘。
To address this issue, WPF provides a way for object edges in a visual tree to "snap" to device pixels, eliminating the soft edges produced by anti-aliasing.
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