Do we have a callback to identify when fallback to mainThread rendering happens ?

[NitishGadangi]

Which Version of Lottie are you using?

Lottie 4.0.1

Question

With new RenderingEngineOption.automatic set to default. At a few cases the operation falls back to mainThread. Which as suggested when explicitly set with LottieConfiguration(renderingEngine: .mainThread) has been reducing some over head on CPU.

But for lotties which are being fetched at runtime from cloud, whats the best practice. Do we have some call back which gives that the given lottie is being fall back to RenderingEngineOption.mainThread. So that we can explicitly set engine to mainThread at runtime.

[calda]

I'd say the best-practice is to rely on RenderingEngineOption.automatic to automatically handle displaying the remote animation using the best rendering engine for that specific animation. .automatic comes with some initial setup overhead but not enough to worry about imo unless you have a very performance-sensitive use case. Otherwise you would have to do something like store a mapping between asset URLs and the rendering engine you'd like to use when displaying that animation.

[NitishGadangi]

Thanks for the response.