问题
This is a follow up question to this one: Exceeded 16 live WebGL contexts for this principal, losing the least recently used one.
In that question, it was found that this error happens when you refresh a webGL tab more than 16 times (or collect 16+ contexts across multiple tabs).
However it is not clear how to dispose a WebGL context so that the browser can free up one of the 16 slots for another WebGL context to be able to go there?
回答1:
If that's still happening it's a browser bug and you should file a bug. Refreshing a webpage should free all resources. There is no official way to dispose of a WebGL context just like there's no official way to dispose an Image or a <video> or pretty much anything else in JavaScript.
See: How to free and garbage collect a WebGL context?
Note the WebGL Conformance Tests create thousands of contexts
https://www.khronos.org/registry/webgl/sdk/tests/webgl-conformance-tests.html
On top of all the contexts created in the 1000s of tests there's a few tests specifically about lots of contexts including this one, this one, this one, and this one
So whatever issue you're seeing you probably need to post a repo.
来源：https://stackoverflow.com/questions/54913836/how-to-properly-dispose-of-my-webgl-context-in-order-to-avoid-the-16-webgl-conte