67fa1a1b0b
The rotated quads on the title screen come from the keyframe block after all. The earlier negative -- "every GP_TITLE build 4 element has all three angle words at zero" -- read the right bytes over too small a region: it walked the top-level declaration table, and the rotated elements are the nested leaf records ptloop01.rat / ptloop02.rat. Confirmed against the framebuffer rather than against our own renderer. The two records declare +12 = 30 and -45; the GPU capture submits their quads at +30.26 and -45.28 degrees -- magnitude and sign, two different values. Corroborated by shape in GP_BUNK 117ca14f, where +12 ramps 0 -> 360 with position, scale and alpha constant: a spin in place. Identifying which draw it was needed edge lengths, not bounding boxes: 400x1076 and 400x1444 against pteff03/pteff03a 399x180 at the elements' two different declared scales, 600% (1080) and 800% (1440). The same test names three known-positives in the capture (ptlogo1, ptcopyright, ptbtn00), so it passes its own control. Keyframe gains rotation_deg plus unknown_4/unknown_8, carried rather than dropped. NOT rendered -- ui_layout::blit is axis-aligned only, so the reference renderer and the port will both draw these upright until a rotating blit exists. The census tool ships with the trap that broke its first version: nested RATC blobs are not 4-byte aligned, so an aligned scan found 0/3 of its own control blocks and missed 16 341 blocks. Disc-wide +12 is non-zero in 14.50 % of 83 862 blocks. sylpheed-formats tests, SYLPHEED_DISC set: 131 passed, 0 failed across the 6 suites finished at commit time; the run had not yet completed.
52 lines
1.6 KiB
Plaintext
52 lines
1.6 KiB
Plaintext
# tools/re-capture/kf_rotation_census.py over dat/GP_*.pak — 2026-08-28
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# CONTROL must read 3/3; see the tool docstring for why.
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CONTROL ptloop01: 3/3 blocks found, +12 = {30} (want 30)
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CONTROL ptloop02: 3/3 blocks found, +12 = {-45} (want -45)
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blocks scanned disc-wide: 83862
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+4: non-zero in 3990 ( 4.76 %)
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+8: non-zero in 3878 ( 4.62 %)
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+12: non-zero in 12164 (14.50 %)
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value histogram (non-zero), top 25:
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+4 = 180 x3880
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+8 = 180 x3102
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+12 = 90 x1824
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+12 = -90 x1176
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+12 = 360 x1173
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+12 = 120 x492
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+12 = 180 x474
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+12 = -58 x402
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+12 = 53 x396
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+12 = -125 x378
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+12 = -120 x366
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+12 = -66 x294
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+12 = 114 x240
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+8 = 90 x201
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+12 = 129 x200
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+12 = -43 x199
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+12 = 115 x186
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+12 = -360 x180
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+8 = -180 x156
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+12 = 58 x156
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+8 = 178 x144
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+12 = -33 x138
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+12 = 124 x138
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+12 = -133 x126
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+12 = 130 x126
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examples:
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+12 ('GP_BUNK', '117ca14f', '0x73961b', 360)
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+12 ('GP_BUNK', '117ca14f', '0x7398ac', 360)
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+12 ('GP_BUNK', '117ca14f', '0x739a93', 360)
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+12 ('GP_BUNK', '117ca14f', '0x739d24', 360)
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+4 ('GP_BUNK', '117ca14f', '0x73ae5d', -180)
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+4 ('GP_BUNK', '117ca14f', '0x73ae85', -180)
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+4 ('GP_BUNK', '1ff0bcb0', '0x733d68', -180)
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+4 ('GP_BUNK', '1ff0bcb0', '0x733d90', -180)
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+8 ('GP_DEBRIEFING_PILOTLOG', '18ab1d66', '0x6f8', 90)
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+8 ('GP_DEBRIEFING_PILOTLOG', '18ab1d66', '0x770', 90)
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+8 ('GP_DEBRIEFING_PILOTLOG', '1c8a0129', '0x6f8', 90)
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+8 ('GP_DEBRIEFING_PILOTLOG', '1c8a0129', '0x770', 90)
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