Nothing here changes what a tool computes; it changes where tools look.
- tools/re-capture: 33 censuses globbed /work/sylph_extract, a path that has
existed nowhere since /work became a clone, so they matched nothing and
printed empty results. They now resolve the disc through a new disc.py
from $SYLPHEED_DISC and exit loudly without it (the #44 fix, generalised).
Nine scripts that imported siblings from the retired Reborn checkout or an
old session scratchpad now import from their own directory. unitgroup.py
only needs the variable when --pak is not given.
- sylpheed-xex: the loader only ever uses the XEX2 retail key. The dead
devkit key and a doc comment claiming a devkit fallback that does not
exist are gone; Project Sylpheed is a retail XEX2, so no XEX1 key either.
- sylpheed-viewer: real_font_rasterizes looked for /tmp/sylph_extract and so
always skipped. It reads $SYLPHEED_DISC now, and passes against the disc.
- Comments and docs that named xenia-rs, the Reborn repository or /work/*.pe
as places to look now name sylpheed.db, Canary's ppc_context.h and the
flat .pe; docs/re/README.md no longer says the native Canary build does not
run.
Historical records keep their original paths: findings that were measured
against /work/xenia-rs/sylpheed.db still say so.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
A per-sprite premultiplied-vs-straight-alpha flag would matter a lot to a
port and has a sharp static signature: premultiplied means RGB <= A
everywhere. Over the 170 decoded GP_TITLE textures that pair to a flag
word:
bit SET n= 61 mean %(RGB>A) 55.52 median 52.52
bit clear n=109 mean %(RGB>A) 33.66 median 30.17
Premultiplied requires ~0% for the flagged group. Both groups are far
from it and the flagged group violates MORE -- the opposite of the
hypothesis. Refuted.
What remains is a weak association: flagged sprites carry more
bright-RGB/low-alpha pixels, which is what glow art looks like. But the
best single threshold classifies 76.5% against a 64.1% base rate -- a
12-point lift with badly overlapping distributions. A tendency, not a
rule, and reported with its base rate so it cannot read as more.
Noted for whoever returns: "0x02 selects an additive blend" was refuted
by blending those sprites additively and finding every measure worse
against the capture -- but that ran through a title render since fixed
twice (rest_plateau, and the 8AX background the composer drops). The
refutation may well stand; it was measured through a renderer with known
other errors, so it is worth one re-run if blit ever gains additive
blending.
Parking the field. Four candidate meanings are dead -- additive blend,
eff name in both directions, transient element, premultiplied alpha --
none produced a positive account, and the bit blocks nothing: the port's
screens composite at 0.947 correlation against a capture without it. The
negative space and the sound attribution method (child order, not size)
are written down so a later attempt starts here.
METHOD: report a classifier's lift over its base rate; and park a field
after N failed hypotheses, saying what was eliminated.
