How to tell whether an existing site is using WebGL?

Question

I'm trying to work out whether a certain website is using WebGL. I'm comfortable using Chrome's developer tools, but I'm not quite sure what I'm looking for. I see various variables and classes with "webgl" in the name, but no call to initWebGL() for instance.

Is there a reliable, perhaps simpler, way to tell?

Answer 1

First, there should be a <canvas> element in the body. If not, it can't be WebGL.

Second, open the chrome debugger and press Ctrl+Shift+F (Command+Option+F for MacOS). At the very bottom, expand the search pane if necessary. Search for "bindBuffer". You absolutely must bind buffers to do anything with WebGL. It will be used.