[Bf-committers] Proxy Removal for Blender 3.0

[Bastien Montagne]

Hmmm, assigning a local copy of the material to an overridde object is 
same issue basically (being complicated to get working), you either have 
to override also the obdata, since by default materials are assigned to 
obdata (meshes and the like), or change that later setting to assign 
materials to objects (in your library file)... But this is tricky to get 
working, order in which things get evaluated in RNA code also matters 
etc. Mine field.

The drivers on material properties should work though, since a few weeks?

Cheers,
Bastien

On 9/22/21 7:20 PM, Hadrien Brissaud wrote:
> Alright, good to see this is known already. For clarity's sake, by 
> "overriding material" I didn't mean changing individual node 
> properties and connections and such, but linking a completely 
> different material on the object (usually a copy of the linked one). I 
> didn't actually expect overrides to the node tree topology/properties 
> to be supported, that sounds awfully complex. It is probably simpler 
> to approach "material variations on linked assets" through drivers 
> between the object's custom properties and its material, which so far 
> doesn't work either -this is something that I tried during production 
> and eventually resorted to local materials because those drivers would 
> fail upon linking the character.
>
> Thanks for your reply, have a good evening
>
> Hadrien
>
>
> On Wed, 22 Sept 2021 at 10:43, Bastien Montagne via Bf-committers 
> <bf-committers at blender.org <mailto:bf-committers at blender.org>> wrote:
>
>     Hi Hadrien,
>
>     Thanks for the feedback. Yes overrides of materials are still very
>     unreliable, this is due to how materials are weirdly related to both
>     Object and ObData IDs... not to mention that there is currently
>     almost
>     nothing overridable in materials anyway, so you would need to rely on
>     tricks (drivers and custom properties) to get some properties
>     editable etc.
>
>     Time was lacking to address this issue for 3.0, it is a known TODO
>     for
>     the near future, together with some other annoying limitations.
>
>     All development on liboverrides happens in master currently, no
>     branch
>     to try out.
>
>     Cheers,
>     Bastien
>
>     On 9/21/21 7:15 PM, Hadrien Brissaud wrote:
>     > Hi Bastien,
>     >
>     > as a user I am generally happy with overrides (thanks!!), except
>     when
>     > I need to override a material. Last I tested the behaviour was
>     rather
>     > unpredictable : an override was -seemingly- created, but on file
>     > reload it would revert to the linked material instead, and the
>     > override button was inoperative (greyed out). I will give this a
>     round
>     > of testing with latest master tonight, unless there is a specific
>     > branch I should check out ? I'm a bit out of the loop.
>     >
>     > Cheers,
>     >
>     > Hadrien
>     >
>     > On Tue, 21 Sept 2021 at 16:32, Bastien Montagne via Bf-committers
>     > <bf-committers at blender.org <mailto:bf-committers at blender.org>
>     <mailto:bf-committers at blender.org
>     <mailto:bf-committers at blender.org>>> wrote:
>     >
>     >     Hi fellow users & developers
>     >
>     >     Now that library overrides gained maturity and are production
>     >     ready in
>     >     the 'character animation' case (where they replace the old
>     'proxy'
>     >     system), it is time to think about removing those proxies.
>     >
>     >     Plan is to commit in the coming days the following changes:
>     >       - Add auto-conversion of proxies into library overrides on
>     file
>     >     load;
>     >       - Remove the 'make proxy' operator.
>     >
>     >     For the time being, an option (OFF by default) will be added
>     to the
>     >     'Experimental' part of the User Preferences to skip converting
>     >     existing
>     >     proxies on file load. That way it is still possible to force
>     keeping
>     >     proxies if absolutely necessary, and/or for test purposes.
>     >
>     >     If everything goes well this option will be removed towards the
>     >     end of
>     >     BCon2 (end of October 2021). Full cleanup of internal proxy
>     >     evaluation
>     >     and management code can then happen during BCon1 of Blender 3.1.
>     >
>     >     Cheers,
>     >     Bastien
>     >
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