Sylpheed RE agent 4e9600ddeb formats: check the derived paint order against the screens already verified ...

The layer-key order was adopted from two measured screens and then applied to
every build on the disc, so it owed a regression check against the screens the
corpus had already validated against the running game.

Rendered the tutorial PAUSE menu and the title main menu both ways and diffed:
3.8 % and 1.1 % of pixels differ, max delta 45/255 and 34/255, and the two
renders are indistinguishable in layout — the change is confined to blends where
translucent sprites overlap. No regression, but which order is more faithful on
those two screens is unsettled and recorded as such.

Adds a corpus-wide test asserting every composite's draw list is strictly
increasing in (layer key, declaration index), streaming one pak at a time so it
does not OOM alongside the other whole-disc tests. It reports the rule's reach:
341 of 965 builds are reordered, and it fails if that share collapses.

2026-08-19 05:43:08 +00:00

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