The Iris API isn't distributed separately yet, but it has a much better stability guarantee than reflecting into internal Iris classes. In the future we plan to do reorganization and repackaging which might break things in your mod.

The following two methods should be sufficient: https://github.com/IrisShaders/Iris/blob/41721a53dde15698bf03c6763475c62978105e7c/src/main/java/net/irisshaders/iris/api/v0/IrisApi.java#L64-L90

Ideally, this change could be backported to 1.16.5 and 1.17.1, but I understand if you do not wish to do that.

Thank you, I will use the new API and also backport it to previous versions.

Great, thanks! I'll make sure to tag future versions of Iris to run with the latest versions of this mod for each MC version to avoid any potential issues with versions mismatches once we do choose to do any internal refactoring / repackaging.

I have released 1.3.0 with the new Iris API changes. I've also included a break clause to prevent users from loading versions prior to Iris 1.1.4. Thanks for providing an API to avoid any issues in the future.