Hakan SevenandClaude Opus 4.8 70702d063f perf(hash): swap std HashMap/HashSet for rustc-hash FxHash ...

Phase 4.1. Handle / u64 keys dominate the hot maps (block_defn,
hatch / image / mesh caches, draw-depth map, viewport wire caches);
the default SipHash is wasted work on integer keys. Alias the std
types to rustc_hash::FxHashMap / FxHashSet crate-wide so every map and
set — including the cross-module draw-depth map shared between scene
and the GPU pipelines — uses the faster hasher consistently.

Mechanical: no behavioural change. Constructors moved from ::new() to
::default() (Fx variants carry no RandomState). Build + 13 tests green.

Co-Authored-By: Claude Opus 4.8 <[email protected]>

2026-06-05 00:35:53 +03:00

..

mod.rs

perf(hash): swap std HashMap/HashSet for rustc-hash FxHash

2026-06-05 00:35:53 +03:00