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This feature is well established and works across many devices and browser versions. It’s been available across browsers since 2015年7月.
映射置换滤镜，该滤镜用来自图像中从in2到空间的像素值置换图像从in到空间的像素值。
in2
in
<animate>
<discard>
<set>
class
style
scale
xChannelSelector
yChannelSelector
该元素实现了 SVGFEDisplacementMapElement 接口。
SVGFEDisplacementMapElement
<filter>
<feBlend>
<feColorMatrix>
<feComponentTransfer>
<feComposite>
<feConvolveMatrix>
<feDiffuseLighting>
<feFlood>
<feGaussianBlur>
<feImage>
<feMerge>
<feMorphology>
<feOffset>
<feSpecularLighting>
<feTile>
<feTurbulence>