Pass Shader over whole HTML (or use HTML-GL)

I’ve come across HTML-GL. It has an unreleased v2 version that also supports Retina.

I was wondering if anyone knows about the current state of this or any other workflows to pass a shader over html content. I’d really like to build a website that has some distortion effect. Has anyone built it themselves or used html-gl?

Are there some concerns using it?

Thank you!