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使用 CSS 的类似着色器实现的全息效果

熟悉 PS 的都了解,两张图片有多种合并模式,这里使用纯 CSS 实现

使用 CSS 的类似着色器实现的全息效果

.mask {
  mix-blend-mode: multiply;
  background-image: url(/tower_spec.jpg);
}

.specular {
  background-attachment: fixed;
  background-image: linear-gradient(180deg, black 20%, #3c5e6d 35%, #f4310e, #f58308 80%, black);
}

示例

<div class="shader">
  <img src="tower.jpg" alt="Asakusa at dusk">
    <div class="shader__layer specular">
      <div class="shader__layer mask"></div>
    </div>
  </div>
</div>

<style>
  .shader {
    position: relative;
    overflow: hidden;
    backface-visibility: hidden; /* to force GPU performance */
  }

  .shader__layer {
    background: black;
    position: absolute;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-size: 100%;
    background-position: center;
  }

  .specular {
    mix-blend-mode: color-dodge;
    background-attachment: fixed;
    background-image: linear-gradient(180deg, black 20%, #3c5e6d 35%, #f4310e, #f58308 80%, black);
  }

  .mask {
    mix-blend-mode: multiply;
    background-image: url(/tower_spec.jpg);
  }
</style>

具体方法参考 https://robbowen.digital/wrote-about/css-blend-mode-shaders/

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