In my project, I am aiming to utilize the mix-blend-mode property to give certain SVG paths the appearance of an erasing path by blending them with a background image on the stroke. However, I have encountered a challenge where the mix-blend property affects all paths instead of selectively targeting specific groups of elements. Here is the code snippet I have come up with:
g.erasing image{
mix-blend-mode: lighten;
}<html>
<body>
<svg height="400" width="450">
<!-- this is the background image -->
<image id="background" xlink:href="https://s3-us-west-2.amazonaws.com/s.cdpn.io/3/Harry-Potter-1-.jpg" width="400" height="450"></image>
<g class="drawing">
<!-- these are the drawing paths -->
<path d="M 100 350 l 150 -300" stroke="red" stroke-width="8" fill="none" />
<path d="M 250 50 l 150 300" stroke="red" stroke-width="8" fill="none" />
<path d="M 175 200 l 150 0" stroke="green" stroke-width="8" fill="none" />
<path d="M 100 350 q 150 -300 300 0" stroke="blue" stroke-width="8" fill="none" />
</g>
<g class="erasing">
<!-- these are the erasing paths -->
<path d="M 0 0 L 400 450" stroke="black" stroke-width="20" />
<path d="M 0 0 L 200 300" stroke="black" stroke-width="20" />
<image xlink:href="https://s3-us-west-2.amazonaws.com/s.cdpn.io/3/Harry-Potter-1-.jpg" width="400" height="450"></image>
</g>
</svg>
</body>
</html>I am looking for a solution that will allow me to apply the mix-blend-mode property only to specific groups of elements while keeping other elements unaffected as illustrated in the following image: https://i.sstatic.net/JcuTK.png
Note: Although masking is a potential solution, it tends to be slow in some browsers.