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Supersample the static background once per resize - #14
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# Conflicts: # src/canvas.ts # wallpapers/beach.ts # wallpapers/city.ts # wallpapers/desert.ts # wallpapers/farm.ts # wallpapers/jungle.ts # wallpapers/prehistoric.ts # wallpapers/space.ts # wallpapers/template.ts # wallpapers/tundra.ts # wallpapers/zen.ts
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Summary
The static background (sky, mountains, ground, still props) is now drawn once per resize at 2× resolution (capped at 600k pixels) and box-filtered down into a Canvas-owned
background, thenlayout()runs again at 1× only for the state scenes need. Static edges are anti-aliased instead of stair-stepped; the per-frame cost doesn't change.Refinement: lines that the 2× filter thinned out now use
thick()so they read as before on cells: the tundra lake cracks and igloo seams, and zen's bridge posts and rail.Evidence
Measured against origin/main back to back (every wallpaper and time, teeming, 320×180): scene 2.32 → 2.19 ms per frame;
layout()per resize 25 → 56 ms.Verified: typecheck, build,
dev/check.ts --max-ms=60in octant and quadrant mode (0 failed); screenshots regenerated.Merge Danger
Door: two-way
Blast Radius: every wallpaper's
layout(); resizes cost about 30 ms more.