perf: Reduce allocations on the hot path - Githubissues

excaliburjs / Excalibur

🎮 Your friendly TypeScript 2D game engine for the web 🗡️

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perf: Reduce allocations on the hot path #3111

Closed eonarheim closed 4 months ago

eonarheim commented 4 months ago

===:clipboard: PR Checklist :clipboard:===

[ ] :pushpin: issue exists in github for these changes
[x] :microscope: existing tests still pass
[x] :see_no_evil: code conforms to the style guide
[x] :triangular_ruler: new tests written and passing / old tests updated with new scenario(s)
[x] :page_facing_up: changelog entry added (or not needed)

==================

This PR takes a stab at a lot of the hot path allocations in excalibur improving performance significantly (numbers will be forthcoming with the new broadphase updates)

New RentalPool type for sparse object pooling
Perf improvements: Hot path allocations
- Reduce State/Transform stack hot path allocations in graphics context
- Reduce Transform allocations
- Reduce AffineMatrix allocations

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