sylpheed-port found the fifth member of our error family on their own side: their
"visible" test counted any element with alpha > 0, which includes palogo_eff0.
Verified from the disc rather than accepted --
entry 10 [0] palogo_eff0.prm 1 kf t=0 fade=0xff000000 scale=100x100 pos=(0,0)
entry 11 same
Alpha 255 over RGB 000000: full-screen opaque black, drawn from t=0 and showing
nothing. So "any element drawn" reports these screens visible from t=0 while the
frame is black -- "visible" read as "drawn".
Worth having on its own: this verifies from the disc the premise behind
`screen render --black`, which its own help states as "what the game composites
over on a screen carrying its own background". On the splash builds that
background is DECLARED, not assumed.
METHOD gains their amendment, which is the sharpest formulation either of us
reached this week: all five instances are a failure of a NOUN, not of a number.
Extent, bounding box, duration, span, visible. The number was always correct FOR
SOMETHING; what went missing was which thing. Every other check in that file
tests whether a number is right, and not one tests whether it is a number of the
thing you think.
Also teaches fade_quads.py to address a PAK ENTRY directly (`e10`) rather than
only a build ordinal. The splashes are entries 10/11 and are not screen builds,
so no ordinal addresses them -- and writing `e10` states which index space is
meant, which is the standing lesson of build-ordinal-vs-entry.md.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Wuu56cE8vJGTBtn1ppsk8v
screen-transitions.md carried a 14-unit "black hold" that the page itself
flagged as arithmetic rather than measurement. Measured it against the running
game; the guess was wrong, and finding the instrument to measure it turned up a
second, larger error in the same page.
1. fade_quads.py was STALE. It read each pose's time from blk+36 -- the next
record's time word -- the association the keyframe record-layout fix retired in
the crate. sylpheed-cli was rebuilt at the time; the Python helper was never
swept with it. Signature: it cannot time a group's last pose, so it printed a
trailing `t=-`. Fixed, controlled against the rebuilt `screen info` ([0 12 70
80] for build 5's pteff00.prm).
2. Through it, the page labelled the quad's CLEAR-hold as its fade-in and
published 0.87 s / 0.97 s / 4.08 s for a ramp that is 0.20 s / 0.20 s / 0.27 s.
A port pacing its menu fade-in off that would run it 5x too slow.
3. The measurement. fade_decompose.sh boots to the main menu, arms the UI draw
capture there, then presses (B), so one 260-frame window holds the whole screen
change. The fade quad is identified rather than guessed: a .prm carries no
tex[base=] and paints last, so it is the last full-screen untextured quad of a
frame. Control first -- the quad's ramp is decoded at 10 units = 5 frames, and
measures 4 submitted-frame steps with one unlogged frame in the span.
Result: content elements begin fading at frame 34; the black quad first appears
at 40 and is opaque by 43; the menu's last frame is 45; frame 46 has 6 draws
against 12. So the ~14 extra units are the content's own fade-outs OVERLAPPING
the quad's ramp, not a hold after it, and the inter-screen black is one frame.
Refutation attempted: sylpheed-port's entries 13/14 twins. Re-derived off the
disc -- 3.06 / 4.33 / 47.91, identical to two decimals. Recorded as confirming
their addressing and arithmetic, NOT as independent support: same renderer,
same disc, which is their own rule.
Reach: one transition, one run; the frame axis has gaps (232 headers over frames
3..260), so every span is +-1 frame.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Wuu56cE8vJGTBtn1ppsk8v
`screen-transitions.md` cites `fade_quads.py` as the command behind its decoded
fade ramp, and the command had been dead since the monorepo migration: it read
regn_decode.py from /work/Syplheed-Reborn and defaulted its pak to
/work/sylph_extract, neither of which exists. Resolve the helper beside the
script and default the pak under $SYLPHEED_DISC, the way run-canary and
sylpheed-cli already do.
A cited command that no longer runs is a citation nobody can check.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_014voBspJ6kFncNErZJuZcLw
its timing is on the disc
Q7. Every title-side screen carries a full-screen black .prm quad that
paints last, and its keyframe group IS the transition: black at T0, clear
by T1, clear until T2, then back to black on exit. Read with the corpus's
start-of-a-ramp rule and Q1's time unit that gives 0.87s for EXTRAS,
0.97s for the main menu, 4.08s for the title -- from the file, not from a
stopwatch.
The disc-wide check is per-pak all-or-nothing rather than the 41% the
headline count suggests, and GP_TITLE's 6 of 12 is the useful row: the
six builds carrying a fade quad are exactly the six SCREENS, and the six
without are exactly the six overlays. GP_DIALOG is 0 of 133. That is
independent corroboration of the overlay finding from two iterations ago.
One piece is NOT on the disc and says so: the fade-OUT length. The fourth
keyframe has no time slot, because a group's last block stops four bytes
short. Measured instead, at 30fps, ~0.4s and the same both directions.
And a warning I earned: the luminance rise after a transition is NOT the
quad's ramp. The incoming screen's own elements animate in after the quad
has cleared -- 1.47s observed against a declared 0.97s. Time the fade
from where the frame is pure black.
Rig: screenshot samples at 0.5 Hz and cannot see a 0.4s fade at all,
which is why an earlier burst called this an instant cut. ffmpeg x11grab
at 30fps instead; both go in METHOD.
