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Aras Pranckevicius 7f8d05131a IDManagement: Speedup ID unique name assignment by tracking used names/basenames/suffixes ...

An implementation of T73412, roughly as outlined there:

Track the names that are in use, as well as base names (before
numeric suffix) plus a bit map for each base name, indicating which
numeric suffixes are already used. This is done per-Main/Library,
per-object-type.

Timings (Windows, VS2022 Release build, AMD Ryzen 5950X):

- Scene with 10k cubes, Shift+D to duplicate them all: 8.7s -> 1.9s.
  Name map memory usage for resulting 20k objects: 4.3MB.
- Importing a 2.5GB .obj file of exported Blender 3.0 splash scene
  (24k objects), using the new C++ importer: 34.2s-> 22.0s. Name map
  memory usage for resulting scene: 8.6MB.
- Importing Disney Moana USD scene (almost half a million objects):
  56min -> 10min. Name map usage: ~100MB. Blender crashes later on
  when trying to render it, in the same place in both cases, but
  that's for another day.

Reviewed By: Bastien Montagne
Differential Revision: https://developer.blender.org/D14162

2022-07-20 14:27:14 +03:00

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