OpenGL-Refpages
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KhronosGroup
Migrate away from MathJax CDN
This hasn't been a problem since they implemented a redirect, but the MathJAX.org CDN has closed, and we should accomodate that. It doesn't just affect GL refpages on khronos.org, but this is a reasonable place to track the issue.
As James Riordon noted a while back, it is being used on lots of xhtml pages in the registry (eg.: https://www.khronos.org/registry/OpenGL-Refpages/gl4/html/glGetSubroutineUniformLocation.xhtml).
This is the line:
Also note that
How to migrate away from mathJAX.org is located here: https://www.mathjax.org/cdn-shutting-down/
Also, we need to add a viewport tag to all the headers of the registry pages to ensure they are properly readable on smartphones. Did one page as an example, highlighting the 2 lines that need changing in bold:
https://www.khronos.org/registry/OpenGL-Refpages/gl4/html/glGetSubroutineUniformLocation.xhtml
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<!DOCTYPE html><html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>glGetSubroutineUniformLocation - OpenGL 4 Reference Pages</title>
<link rel="stylesheet" type="text/css" href="opengl-man.css"/>
<meta name="generator" content="DocBook XSL Stylesheets V1.79.1"/>
<meta content='width=device-width, height=device-height, minimum-scale=1.0, initial-scale=1.0, user-scalable=0' name='viewport'/>
<script type="text/x-mathjax-config">
MathJax.Hub.Config({
MathML: {
extensions: ["content-mathml.js"]
},
tex2jax: {
inlineMath: [['$','$'], ['\\(','\\)']]
}
});
</script>
<script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.2/MathJax.js?config=TeX-AMS-MML_HTMLorMML"></script>
</head>
This hasn't been a problem since they implemented a redirect, [...]
This is now a problem: the MathJAX library won't even load for me any more on Firefox 87.0. When trying to read the docs for glBlendFunc, I noticed that the formulas in the table seemed broken. A quick look at the debug console showed that the MathJax CDN doesn't include the correct CSP headers any more: 
Setting security.csp.enable=false in about:config resolves the issue, but this should really be fixed correctly. Heck, the script at the current URL literally just loads the library from cdnjs.
