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The two sweeps are batched into ONE additive indices=8 draw, two quads, and my parser took the first v: match per line and discarded the rest. Every analysis saw quad A and never quad B. No new capture was needed -- the same logs units 5 and 6 used already contained it. Both strips measured: opposite directions matching the declared -639->1521 and 1721->-839, and a size ratio of 1.301 against the declared sy ratio 800/600 = 1.333. Unit 5 recorded that the PORT's renderer draws pteff03a and treated that as the port being wrong. The port was right. Third instance of this class in the corpus (palogo_anima and the six-quad dump are the others): a truncating reader yields a clean, complete-looking negative. Reading one raw draw line in full would have caught it -- indices=8 was printed on every line and says two quads outright. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01Jc4pciRArGHfxGGhEbwp5t
76 lines
3.5 KiB
Markdown
76 lines
3.5 KiB
Markdown
# F6 unit 5 — `pteff03a` is **never drawn**: the game shows ONE sweep, not two
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> 🔴 **REFUTED 2026-09-02 by [`f6-unit11-pteff03a-IS-drawn.md`](f6-unit11-pteff03a-IS-drawn.md).**
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> `pteff03a` **is** drawn. It is batched with `pteff03` into one additive
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> `indices=8` draw, and the parser behind this page read only the first
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> vertex of each draw line. The negative below is an artefact of the reader.
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**Status: ✅ measured ⟨capture⟩ ×1.** 2026-09-02.
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**Question:** does `pteff03a` appear anywhere in the capture?
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**Look at:** any quad travelling right-to-left at the larger scale. Pass = found;
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fail = absent throughout.
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**Not covered:** why the disc declares it if it is absent; other screens.
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---
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## The measurement
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Every quad taller than 1.2 NDC in the whole capture — frames 1…2499, the title's
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build-in and settle:
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```
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h=3.15 n=1754 frames 746..2499 x drift +2.19 LEFT->RIGHT <- pteff03
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h=2.00 n= 54 frames 729.. 782 x drift 0.00 static <- not a sweep
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quads in pteff03a's expected height band (>3.4): NONE
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```
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`pteff03a` declares **800 % scale** against `pteff03`'s 600 %, so its AABB is
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≈ 1303 px ≈ **3.62 NDC**, and it travels **right-to-left**. There is no quad of
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that height anywhere, and only **one** travelling quad in the capture at all.
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> **The game draws one sweep during the title. The second is declared and not
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> submitted.**
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📌 **Not a windowing artefact.** `ptloop02`'s leaf reaches α = 128 at its `t = 150`;
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at the leaf rate measured in unit 3 that is ≈ 324 frames after its start, well
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inside the 1 754 frames captured. If it shared `pteff03`'s clock it had ample room
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to appear.
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## What it hands to the port
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Their renderer **draws** `pteff03a` — confirmed on their side at three instants.
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**An extra light streak the game never shows, appearing partway through the
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build-in, looks exactly like "the sweep starts too early."** That is a better
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candidate for the human's report than any clock offset, and it does not depend on
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unit 2's unresolved alpha question at all.
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⚠️ **One capture, one boot, one window.** Absence here is strong — the scan was
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over every tall quad in the whole stream, not a filtered subset — but it is still
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absence in one observation. The five-second human check the port is asking for
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(*one streak or two?*) would settle it faster than another capture, and I would
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wait for that before anyone deletes an element.
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## 🔴 The disc declares it, so the question moves to my side
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`GP_TITLE` build 4 declares `ptloop02.rat` as element 12, beside `ptloop01.rat` as
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element 11 — identical pivots, identical keyframe times. **Why the game submits one
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and not the other is not answered here.** Candidates, none tested: its leaf alpha
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starts at 0 where `pteff03`'s starts at 255, so a zero-alpha skip would suppress
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its first frames but not the whole run; or a focus/variant link means only one of
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the pair is ever active.
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## Refutation attempt
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**Target:** the port's refutation of my by-size identification — *"both sweep
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sprites are byte-identical in size, so size cannot separate them"*.
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**Result: they refuted it themselves first, and correctly.** The two *sprites* are
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399×180, but the two *leaves* declare different scales, so the drawn quads differ
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in height by a third. Size separates them fine. Recorded because it is the second
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time in this exchange that a challenge was right to be raised and wrong in its
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stated reason — and both times the check still found something real. **The value
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was in asking, not in the diagnosis.**
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