Breaking changes for 4.0 #105523
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Reference: blender/blender#105523
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Overview of all planned and ongoing breaking changes (feature removal and replacements, compatibility breakage...) for Blender 4.0.
Once these changes are commited and done, remove them from the list and document them in the wiki release notes instead.
Breeaking changes for 4.0to Breaking changes for 4.0Just a question/suggestion for an item. I had started a patch that converted all node UI and python references from "fac" to "factor" to be much more user-friendly. I was directed to shelve that patch until 4.0, and am certainly keen to make those changes at that time. Is it possible to reference archived patches or would a new issue/milestone need to be opened? Or would this get added to item #102607?
The "fac" rename is part of the already listed #96219.
There's almost 200 instances of
DNA_DEPRECATEDacross many DNA types. Removing those deprecated fields would be really nice to do for 4.0. Will there be a task to detail what's required to safely do so wrt back-compat etc?@deadpin these are often needed to open old files on newer Blender versions (although undoubtedly some are unused and can be removed).
Somewhat related, I think it would be good to use a legacy suffix in the case they are not longer used.
@ideasman42 For highly impacted DNA types like
Object, which has 164 bytes worth of deprecation (11% of its size) and for which there can be thousands in a file, would it make sense to do something like what was done for some of the Mesh types in recent months where the deprecated items are, I think, only available for blend file IO and theversioning_*files?