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Simplify the ID allocation in IdentityValues #5229

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merged 5 commits into from
Feb 15, 2024

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nical
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@nical nical commented Feb 9, 2024

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Addresses part of #5196

Description

Our Id allocation logic keeps track of all used IDs, grouped by epoch. There are two issues with that:

  • It's slow when there are many IDs (which can happen because of some unfortunate ID leaks)
  • It doesn't quite match the mental model of a number of the maintainers including myself.

This PR switches to a very simple and fast logic for allocating IDs, which works under the assumption that we either always allocate IDs, or always provide them externally.

~Unfortunately right now this assumption breaks in one place in the tests, so we have to fix that.` Edit: False alert, it seems to work.

Checklist

  • Run cargo fmt.
  • Run cargo clippy.
  • Run cargo xtask test to run tests.
  • Add change to CHANGELOG.md. See simple instructions inside file.

wgpu-core/src/identity.rs Outdated Show resolved Hide resolved
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@cwfitzgerald cwfitzgerald enabled auto-merge (squash) February 15, 2024 20:37
@cwfitzgerald cwfitzgerald merged commit 004e3ef into gfx-rs:trunk Feb 15, 2024
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@cwfitzgerald cwfitzgerald added the PR: needs back-porting PR with a fix that needs to land on crates label Feb 29, 2024
cwfitzgerald added a commit to cwfitzgerald/wgpu that referenced this pull request Feb 29, 2024
@cwfitzgerald cwfitzgerald removed the PR: needs back-porting PR with a fix that needs to land on crates label Mar 1, 2024
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2 participants