If WebGL is disabled in Firefox it may be because your video drivers need updating. Choose your computer’s video card and view current version. Check to see if your video drivers need updating first, before following steps below. (Note: Clicking on the links below will take you to an external page on the video driver website.)
First, Enable WebGL.
1. Open a Firefox web browser page. Type about:config into the URL bar
2. Search for webgl.disabled
3. Ensure that its value is false (any changes take effect immediately without relaunching Firefox). If the value is true, you can change it to false by clicking it.
Then, inspect the status of WebGL.
1. Go to about:support
2. Scroll down to the Graphics section.
Inspect the WebGL Renderer row in the Graphics table: