在SVG路径中屏蔽Css动画

我试图重现这种效果

在我的网站中，使用作为掩码的不是文本，而是我自己的SVG，这是我得到的：

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我怎样才能解决这个问题？非常感谢您的回复。

同样的技术可能不适用于SVG。如果你换个方向，你可能会更成功。与其尝试将动画背景遮罩应用于SVG，不如尝试将动画背景应用于SVG，然后使用magritte SVG将其遮罩。感谢您的评论！但是我如何使用SVG作为掩码呢？我必须编辑SVG代码吗？我已经用illustrator自己做了，所以我可以按照我的意愿编辑它，但是一个建议将非常有用！这就是我删除-webkit背景剪辑时的工作原理：text；从CSS文件

@mixin foggy-background($x, $y) {
background:
  radial-gradient(ellipse at center, rgba(255,255,255,1) 0%,rgba(255,255,255,0) 40%) 400px+$x*3 300px+$y*2 no-repeat,
  radial-gradient(ellipse at center, rgba(255,255,255,.5) 0%,rgba(255,255,255,0) 40%) 0px+$x*3 0px+$y*2 no-repeat,
  radial-gradient(ellipse at center, rgba(255,255,255,.6) 0%,rgba(255,255,255,0) 50%) 50px+$x*2 300px+$y no-repeat,
  radial-gradient(ellipse at center, rgba(255,255,255,.4) 0%,rgba(255,255,255,0) 40%) -200px+$x -150px+$y no-repeat,
  #000;
}

@keyframes animate {
   // with a bit more love you can get better results :)
 0% {
    @include foggy-background(-400, -300);
 }

 100% {
    @include foggy-background(200, 500);
 }
}

<svg version="1.1" id="magritte" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" x="0px" y="0px"
         viewBox="-461 463 100 100"xml:space="preserve">

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