Reduce allocations in variable fonts code
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- Dominant language
- Rust
- Stars
- 4.1k
- Forks
- 348
- Avg merge
- 1d 14h
- Merged PRs (30d)
- 3
Description
The new variable fonts code in the Fontations PR allocates Vecs for variations more than is strictly necessary. We should reduce allocations by using SmallVec and/or reusing buffers as appropriate.
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First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Locate the variable fonts code introduced in the Fontations PR and inspect where variation-related Vec allocations occur. Compare SmallVec and buffer reuse approaches, then verify that variable-font behavior is unchanged while unnecessary allocations are reduced.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- rust
- Domain
- performance
- Issue type
- Refactor
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Quiet
- Clarity
- Mostly clear
- Newbie friendliness
- 48/100