You can easily hide it by hijacking Function.prototype.toString to see if `this ...

Matheus28 on April 17, 2021 | parent | context | favorite | on: Are top websites using WebGL for fingerprinting?

You can easily hide it by hijacking Function.prototype.toString to see if `this == fake gl.getParemeter or this == fake toString`. Then the js code needs to find a real Function.prototype.toString by creating an iframe, but then you can detect that. Then I'm out of ideas on how to rescue the original toString