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Finish Asset System Refactor #122439

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opened 2024-05-29 15:13:26 +02:00 by Julian Eisel · 0 comments
Julian Eisel commented 2024-05-29 15:13:26 +02:00
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Finish transition away from the file browser as basis for asset functionality, towards asset system.

Motivation

When the asset browser was introduced in 3.0, it was entirely based on the File Browser. Since then it became clear that we don’t just want an asset browser, but a whole asset system that makes asset functionality available throughout Blender. Plus, the file browser showed a number issues that are hard to fix, especially with its preview image and caching system.

A lot of work was done to transition to an asset system that is independent of the file browser. However, this transition remains unfinished, some important functionality is still based on the File Browser backend, bringing along its issues & limitations.

User Visible Problems:

  • Drastic flickering of asset previews on common actions, most notably editing options in the Adjust Last Operation panel - #93726, #100716, #112038, #119289
  • Displaying asset previews outside the asset browser loads previews of all assets, adding potentially 100s of megabytes to memory that stay until Blender is closed - #111614
  • Blender freezing continuously for long periods when displaying huge asset libraries in the asset browser
  • Files don't appear in File Browser while Asset Browser loads assets - #89783 (fixed with e02e78d840)
  • Seemingly slow loading of previews outside of Asset Browser
  • Odd BPY design choices and properties documented as "temporary design"

It seems like a good time to finish this refactor, now that designs have evolved but before technical debt gets too big and the system too complex to refactor. Should also help with future projects, like online asset repositories.

Tasks

  • Rewrite preview handling - fixes previews flickering on undo/redo & improves loading performance in the asset shelf.
    • Use general UI preview system for async loading and display in asset UIs and the File Browser - rather than relying on the file browser with its own implementation.
    • Garbage collector for unused previews
    • Query asset previews via asset system
  • Port remaining functionality to the asset system
    • Loading assets from current file
    • Loading assets from disk
    • Loading assets from asset index
    • Sorting assets (in order: By catalog, by name, by date, …)
  • Garbage collector for assets/libraries that are not being displayed?
  • Remove legacy AssetHandle type (except where needed for BPY compatibility). This is a wrapper around a file of the file browser backend. Once the asset system handles previews, this is unnecessary finally.
Finish transition away from the file browser as basis for asset functionality, towards asset system. ## Motivation When the asset browser was introduced in 3.0, it was entirely based on the File Browser. Since then it became clear that we don’t just want an asset browser, but a whole asset system that makes asset functionality available throughout Blender. Plus, the file browser showed a number issues that are hard to fix, especially with its preview image and caching system. A lot of work was done to transition to an asset system that is independent of the file browser. However, this transition remains unfinished, some important functionality is still based on the File Browser backend, bringing along its issues & limitations. **User Visible Problems:** - Drastic flickering of asset previews on common actions, most notably editing options in the _Adjust Last Operation_ panel - #93726, #100716, #112038, #119289 - Displaying asset previews outside the asset browser loads previews of _all_ assets, adding potentially 100s of megabytes to memory that stay until Blender is closed - #111614 - Blender freezing continuously for long periods when displaying huge asset libraries in the asset browser - ~~Files don't appear in File Browser while Asset Browser loads assets - #89783~~ (fixed with e02e78d840b0) - Seemingly slow loading of previews outside of Asset Browser - Odd BPY design choices and properties documented as "temporary design" It seems like a good time to finish this refactor, now that designs have evolved but before technical debt gets too big and the system too complex to refactor. Should also help with future projects, like online asset repositories. ## Tasks - [ ] Rewrite preview handling - fixes previews flickering on undo/redo & improves loading performance in the asset shelf. - [ ] Use general UI preview system for async loading and display in asset UIs and the File Browser - rather than relying on the file browser with its own implementation. - [ ] Garbage collector for unused previews - [ ] Query asset previews via asset system - [ ] Port remaining functionality to the asset system - [ ] Loading assets from current file - [ ] Loading assets from disk - [ ] Loading assets from asset index - [ ] Sorting assets (in order: By catalog, by name, by date, …) - [ ] Garbage collector for assets/libraries that are not being displayed? - [ ] Remove legacy AssetHandle type (except where needed for BPY compatibility). This is a wrapper around a file of the file browser backend. Once the asset system handles previews, this is unnecessary finally.
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