529cf13f2a
Two more emulator runs close two of the three reach limits on the blend page. THE TITLE (entries 4 + 2 composited). Everything alpha-over except the two rotated sweep strips and -- the finding -- ptbtn00f, the PRESS (A) plate's focused variant, which is ADDITIVE while its own base ptbtn00 is not. That is what the documented plate pulse is made of, and a port drawing both alpha-over cannot reach the pulse's peak by any pacing. And ptlogo_back2 / ptlogo_back2eff are ALPHA-OVER. They are frame-shaped, large, dark and 94 %/87 % transparent -- every surface property the menu's ptframe* have -- so 'frame-shaped and mostly transparent implies additive' is refuted on the one screen that could test it. THE MENU replicates draw for draw in two further sessions; the one-session caveat is retired. THE VERTEX CAP was 8 = two quads, so a batched draw reported its first two elements and dropped the rest. Raised to 64. This is why ptframe4, pteff21, pteff22 and pteff23 looked like elements the game never draws: EXTRAS' 24-index additive draw holds six quads and the log printed two. THE SWEEPS are on screen on the main menu in every captured frame, stepping ~0.03 NDC per frame in opposite directions with their vertex alpha ramping, at different phases in two sessions. The leaf group runs on the menu. What that does not say is how much they contribute. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01Wuu56cE8vJGTBtn1ppsk8v
69 lines
4.4 KiB
Plaintext
69 lines
4.4 KiB
Plaintext
# Are the rotated sweep strips ON SCREEN on the MAIN MENU, or parked? 2026-08-31.
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#
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# tools/re-capture/sweep_positions.py <draw log>
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#
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# The question is sylpheed-port's, and it is a good one: the blend map reports a
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# quad's SIZE, which names an element and says nothing about visibility. A quad
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# parked off screen is still a draw call, and their authored/rendering.json
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# scopes the leaf loop to the TITLE only, on the evidence that a menu render with
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# the sweeps visible matches the capture worse.
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#
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# NDC x and y are in [-1,+1] across the surface, so a quad overlaps the screen
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# iff its x range crosses that box and its y range does too.
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#
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# ANSWER: on the main menu both strips are ON SCREEN in every captured frame, and
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# they MOVE between frames -- x steps by about 0.03 NDC (~19 px) per frame in
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# OPPOSITE directions, and the per-vertex alpha ramps with it (EF->F0->F2 and
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# 9A->9C->9D). Two independent sessions, at different phases, so they free-run.
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# The leaf group runs on the menu; it is not parked there.
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#
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# ⚠️ What this does NOT say: that the strips CONTRIBUTE much. They are additive
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# with vertex alpha 0.60-0.95 over a texture that is overwhelmingly low-alpha.
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# "Submitted, on screen and moving" is what is measured here. How much light they
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# add is not.
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=== main menu, session 1 ===
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=== /sylph-home/re/blendcap/xenia_re_ui_draws_01.log ===
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frame draw quad NDC x range NDC y range col on screen?
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0 2 0 0.69 .. 2.08 -1.57 .. 1.58 EFFFFFFF ON SCREEN
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0 2 1 -0.61 .. 1.42 -1.81 .. 1.81 9AFFFFFF ON SCREEN
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0 5 0 -0.64 .. 0.64 -1.00 .. 1.00 C0FFFFFF ON SCREEN
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0 6 0 -0.54 .. 0.54 -1.00 .. 1.00 FFFFFFFF ON SCREEN
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0 7 0 -0.31 .. 0.07 -0.08 .. 0.70 FFFFFFFF ON SCREEN
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0 7 1 -0.09 .. 0.31 -0.60 .. 0.26 FFFFFFFF ON SCREEN
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4 14 0 0.72 .. 2.11 -1.57 .. 1.58 F0FFFFFF ON SCREEN
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4 14 1 -0.64 .. 1.39 -1.81 .. 1.81 9CFFFFFF ON SCREEN
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4 17 0 -0.64 .. 0.64 -1.00 .. 1.00 C0FFFFFF ON SCREEN
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4 18 0 -0.54 .. 0.54 -1.00 .. 1.00 FFFFFFFF ON SCREEN
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4 19 0 -0.31 .. 0.07 -0.08 .. 0.70 FFFFFFFF ON SCREEN
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4 19 1 -0.09 .. 0.31 -0.60 .. 0.26 FFFFFFFF ON SCREEN
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5 26 0 0.76 .. 2.15 -1.57 .. 1.58 F2FFFFFF ON SCREEN
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5 26 1 -0.68 .. 1.35 -1.81 .. 1.81 9DFFFFFF ON SCREEN
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5 29 0 -0.64 .. 0.64 -1.00 .. 1.00 C0FFFFFF ON SCREEN
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5 30 0 -0.54 .. 0.54 -1.00 .. 1.00 FFFFFFFF ON SCREEN
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5 31 0 -0.31 .. 0.07 -0.08 .. 0.70 FFFFFFFF ON SCREEN
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5 31 1 -0.09 .. 0.31 -0.60 .. 0.26 FFFFFFFF ON SCREEN
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=== main menu, session 2 (a different boot, hours later) ===
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=== /sylph-home/re/titleblend/xenia_re_ui_draws_02.log ===
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frame draw quad NDC x range NDC y range col on screen?
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0 2 0 0.24 .. 1.62 -1.57 .. 1.58 D7FFFFFF ON SCREEN
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0 2 1 -1.67 .. 0.36 -1.81 .. 1.81 C7FFFFFF ON SCREEN
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0 5 0 -0.64 .. 0.64 -1.00 .. 1.00 C0FFFFFF ON SCREEN
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0 6 0 -0.54 .. 0.54 -1.00 .. 1.00 FFFFFFFF ON SCREEN
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0 7 0 -0.31 .. 0.07 -0.08 .. 0.70 FFFFFFFF ON SCREEN
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0 7 1 -0.09 .. 0.31 -0.60 .. 0.26 FFFFFFFF ON SCREEN
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4 14 0 0.27 .. 1.65 -1.57 .. 1.58 D9FFFFFF ON SCREEN
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4 14 1 -1.71 .. 0.32 -1.81 .. 1.81 C8FFFFFF ON SCREEN
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4 17 0 -0.64 .. 0.64 -1.00 .. 1.00 C0FFFFFF ON SCREEN
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4 18 0 -0.54 .. 0.54 -1.00 .. 1.00 FFFFFFFF ON SCREEN
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4 19 0 -0.31 .. 0.07 -0.08 .. 0.70 FFFFFFFF ON SCREEN
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4 19 1 -0.09 .. 0.31 -0.60 .. 0.26 FFFFFFFF ON SCREEN
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5 26 0 0.30 .. 1.68 -1.57 .. 1.58 DAFFFFFF ON SCREEN
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5 26 1 -1.73 .. 0.30 -1.81 .. 1.81 C9FFFFFF ON SCREEN
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5 29 0 -0.64 .. 0.64 -1.00 .. 1.00 C0FFFFFF ON SCREEN
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5 30 0 -0.54 .. 0.54 -1.00 .. 1.00 FFFFFFFF ON SCREEN
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5 31 0 -0.31 .. 0.07 -0.08 .. 0.70 FFFFFFFF ON SCREEN
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5 31 1 -0.09 .. 0.31 -0.60 .. 0.26 FFFFFFFF ON SCREEN
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