Just to make sure with the experts:
There can’t be any obscure workaround to use the stats panel with an offscreen canvas, right?
If you mean used directly - nope, because it depends on DOM, which is not accessible within a worker.
If you mean just measuring the performance of rendering for offscreen canvas - can, performance.now() before and after .render() should still be working just fine in the thread. You can send the resulting measurements to the main thread and then put it in a DOM element.
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There is also the renderer.info structure that can give you some additional information about rendering, like triangle counts, geometry counts, etc.
https://threejs.org/docs/#api/en/renderers/WebGLRenderer.info
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