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Sylpheed/docs/re/captures/title-builds/title-draw-capture-vertex-colours.log
Sylpheed RE agent 65a4fe0b32 re: the swoosh is solved -- the game draws it as rotated quads and our 
blit cannot

Ran the route I corrected last iteration, and it answered the question I
had classified as undecodable.

First the ninth candidate died: every vertex colour in the whole capture
is <alpha>FFFFFF, white RGB with only alpha varying. The game passes no
colour, so that hypothesis is refuted from the running game rather than
from the file.

Then the geometry gave it away. Draw 2 submits TWO PARALLELOGRAMS,
neither axis-aligned -- edges (0.54,-0.56) and (0.44,0.79), roughly 45
and 61 degrees, both extending to y=+/-1.81 in NDC, well off screen.
That is the diagonal Z stroke. And ui_layout::blit walks rows and columns
of an axis-aligned rectangle; it has no rotation at all. So we blit the
sprite upright where the game draws it skewed, which is exactly the
signature I measured: right on average at +1.83, right in position with
the correlation peaking at zero shift, wrong in structure at 0.70.

Nine candidates, and the answer was never going to be a field, because
the difference is not in the sprite -- it is in how the quad is built.

Two things left open and written as such. The decoded keyframe carries
fade, scale, tint, x, y and time and NO rotation, so where the rotation
comes from is not decoded. And the pink-versus-white reading I have been
carrying was a visual comparison of two differently-shaped renderings; it
should be re-checked after geometry rather than treated as a separate
defect.
2026-08-28 22:13:50 +00:00

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# every draw in SUBMISSION ORDER, undeduplicated, frames 1..3
# tex dimensions identify the sprite; base is the guest address
0 prim=8 indices=3 vs=0x0A6D1DD7767FDF27 ps=0x2E372EA28CC404B7
vb=0x15036638 stride=28 attrs=[57@0 38@12 ] fmt0=57 v: [-0.50,-0.50,z=0.00000] [1279.50,-0.50,z=0.00000] [1279.50,719.50,z=0.00000]
1 prim=13 indices=4 vs=0xE0BAFB4F520FE441 ps=0xE59B2B3DA4AA9008 tex[base=0x0BA60000 1280x768 fmt=6]
vb=0x15036690 stride=24 attrs=[57@0 6@12 37@16 ] fmt0=57 v: [-1.00,1.00,z=0.00000,col=FFFFFFFF] [1.00,1.00,z=0.00000,col=FFFFFFFF] [1.00,-1.00,z=0.00000,col=FFFFFFFF] [-1.00,-1.00,z=0.00000,col=FFFFFFFF]
2 prim=13 indices=8 vs=0xE0BAFB4F520FE441 ps=0xE59B2B3DA4AA9008 tex[base=0x11C80000 1280x768 fmt=6]
vb=0x150366F0 stride=24 attrs=[57@0 6@12 37@16 ] fmt0=57 v: [0.70,1.58,z=0.00000,col=C3FFFFFF] [1.24,1.02,z=0.00000,col=C3FFFFFF] [0.40,-1.57,z=0.00000,col=C3FFFFFF] [-0.14,-1.02,z=0.00000,col=C3FFFFFF] [-1.29,1.02,z=0.00000,col=B6FFFFFF] [-0.85,1.81,z=0.00000,col=B6FFFFFF] [0.75,-1.02,z=0.00000,col=B6FFFFFF] [0.31,-1.81,z=0.00000,col=B6FFFFFF]
3 prim=13 indices=4 vs=0xE0BAFB4F520FE441 ps=0xE59B2B3DA4AA9008 tex[base=0x0B690000 1280x768 fmt=6]
vb=0x150367B0 stride=24 attrs=[57@0 6@12 37@16 ] fmt0=57 v: [-1.00,1.00,z=0.00000,col=FFFFFFFF] [1.00,1.00,z=0.00000,col=FFFFFFFF] [1.00,-1.00,z=0.00000,col=FFFFFFFF] [-1.00,-1.00,z=0.00000,col=FFFFFFFF]
4 prim=13 indices=8 vs=0xE0BAFB4F520FE441 ps=0xE59B2B3DA4AA9008 tex[base=0x0B2C0000 1280x768 fmt=6]
vb=0x15036810 stride=24 attrs=[57@0 6@12 37@16 ] fmt0=57 v: [-0.90,0.68,z=0.00000,col=FFFFFFFF] [0.87,0.68,z=0.00000,col=FFFFFFFF] [0.87,-0.10,z=0.00000,col=FFFFFFFF] [-0.90,-0.10,z=0.00000,col=FFFFFFFF] [-0.89,0.65,z=0.00000,col=FFFFFFFF] [0.86,0.65,z=0.00000,col=FFFFFFFF] [0.86,-0.08,z=0.00000,col=FFFFFFFF] [-0.89,-0.08,z=0.00000,col=FFFFFFFF]
5 prim=13 indices=8 vs=0xE0BAFB4F520FE441 ps=0xE59B2B3DA4AA9008 tex[base=0x11C80000 1280x768 fmt=6]
vb=0x150368D0 stride=24 attrs=[57@0 6@12 37@16 ] fmt0=57 v: [-0.71,0.47,z=0.00000,col=FFFFFFFF] [0.72,0.47,z=0.00000,col=FFFFFFFF] [0.72,0.15,z=0.00000,col=FFFFFFFF] [-0.71,0.15,z=0.00000,col=FFFFFFFF] [0.76,-0.05,z=0.00000,col=FFFFFFFF] [0.82,-0.05,z=0.00000,col=FFFFFFFF] [0.82,-0.10,z=0.00000,col=FFFFFFFF] [0.76,-0.10,z=0.00000,col=FFFFFFFF]
6 prim=13 indices=4 vs=0xE0BAFB4F520FE441 ps=0xE59B2B3DA4AA9008 tex[base=0x0BE30000 1280x768 fmt=6]
vb=0x15036990 stride=24 attrs=[57@0 6@12 37@16 ] fmt0=57 v: [-0.79,0.15,z=0.00000,col=FFFFFFFF] [0.76,0.15,z=0.00000,col=FFFFFFFF] [0.76,-0.14,z=0.00000,col=FFFFFFFF] [-0.79,-0.14,z=0.00000,col=FFFFFFFF]
7 prim=13 indices=8 vs=0xE0BAFB4F520FE441 ps=0xE59B2B3DA4AA9008 tex[base=0x11C80000 1280x768 fmt=6]
vb=0x150369F0 stride=24 attrs=[57@0 6@12 37@16 ] fmt0=57 v: [-0.54,-0.82,z=0.00000,col=FFFFFFFF] [0.54,-0.82,z=0.00000,col=FFFFFFFF] [0.54,-0.87,z=0.00000,col=FFFFFFFF] [-0.54,-0.87,z=0.00000,col=FFFFFFFF] [-0.40,-0.53,z=0.00000,col=FFFFFFFF] [0.40,-0.53,z=0.00000,col=FFFFFFFF] [0.40,-0.67,z=0.00000,col=FFFFFFFF] [-0.40,-0.67,z=0.00000,col=FFFFFFFF]
8 prim=13 indices=4 vs=0xE0BAFB4F520FE441 ps=0xE59B2B3DA4AA9008 tex[base=0x0B2C0000 1280x768 fmt=6]
vb=0x15036AB0 stride=24 attrs=[57@0 6@12 37@16 ] fmt0=57 v: [-0.42,-0.49,z=0.00000,col=31FFFFFF] [0.42,-0.49,z=0.00000,col=31FFFFFF] [0.42,-0.70,z=0.00000,col=31FFFFFF] [-0.42,-0.70,z=0.00000,col=31FFFFFF]
9 prim=8 indices=3 vs=0x72CBCAA6A7984111 ps=0xE59B2B3DA4AA9008 tex[base=0x10000000 1x1 fmt=26]
10 prim=8 indices=3 vs=0x72CBCAA6A7984111 ps=0xE59B2B3DA4AA9008 tex[base=0x10000000 1x1 fmt=26]
--- frame 3 ---
11 prim=8 indices=3 vs=0x0A6D1DD7767FDF27 ps=0x2E372EA28CC404B7
vb=0x15076C38 stride=28 attrs=[57@0 38@12 ] fmt0=57 v: [-0.50,-0.50,z=0.00000] [1279.50,-0.50,z=0.00000] [1279.50,719.50,z=0.00000]
12 prim=13 indices=4 vs=0xE0BAFB4F520FE441 ps=0xE59B2B3DA4AA9008 tex[base=0x0BA60000 1280x768 fmt=6]
vb=0x15076C90 stride=24 attrs=[57@0 6@12 37@16 ] fmt0=57 v: [-1.00,1.00,z=0.00000,col=FFFFFFFF] [1.00,1.00,z=0.00000,col=FFFFFFFF] [1.00,-1.00,z=0.00000,col=FFFFFFFF] [-1.00,-1.00,z=0.00000,col=FFFFFFFF]
13 prim=13 indices=8 vs=0xE0BAFB4F520FE441 ps=0xE59B2B3DA4AA9008 tex[base=0x11C80000 1280x768 fmt=6]
vb=0x15076CF0 stride=24 attrs=[57@0 6@12 37@16 ] fmt0=57 v: [0.73,1.58,z=0.00000,col=C5FFFFFF] [1.27,1.02,z=0.00000,col=C5FFFFFF] [0.43,-1.57,z=0.00000,col=C5FFFFFF] [-0.11,-1.02,z=0.00000,col=C5FFFFFF] [-1.32,1.02,z=0.00000,col=B8FFFFFF] [-0.88,1.81,z=0.00000,col=B8FFFFFF] [0.71,-1.02,z=0.00000,col=B8FFFFFF] [0.27,-1.81,z=0.00000,col=B8FFFFFF]
14 prim=13 indices=4 vs=0xE0BAFB4F520FE441 ps=0xE59B2B3DA4AA9008 tex[base=0x0B690000 1280x768 fmt=6]
vb=0x15076DB0 stride=24 attrs=[57@0 6@12 37@16 ] fmt0=57 v: [-1.00,1.00,z=0.00000,col=FFFFFFFF] [1.00,1.00,z=0.00000,col=FFFFFFFF] [1.00,-1.00,z=0.00000,col=FFFFFFFF] [-1.00,-1.00,z=0.00000,col=FFFFFFFF]
15 prim=13 indices=8 vs=0xE0BAFB4F520FE441 ps=0xE59B2B3DA4AA9008 tex[base=0x0B2C0000 1280x768 fmt=6]
vb=0x15076E10 stride=24 attrs=[57@0 6@12 37@16 ] fmt0=57 v: [-0.90,0.68,z=0.00000,col=FFFFFFFF] [0.87,0.68,z=0.00000,col=FFFFFFFF] [0.87,-0.10,z=0.00000,col=FFFFFFFF] [-0.90,-0.10,z=0.00000,col=FFFFFFFF] [-0.89,0.65,z=0.00000,col=FFFFFFFF] [0.86,0.65,z=0.00000,col=FFFFFFFF] [0.86,-0.08,z=0.00000,col=FFFFFFFF] [-0.89,-0.08,z=0.00000,col=FFFFFFFF]
16 prim=13 indices=8 vs=0xE0BAFB4F520FE441 ps=0xE59B2B3DA4AA9008 tex[base=0x11C80000 1280x768 fmt=6]
vb=0x15076ED0 stride=24 attrs=[57@0 6@12 37@16 ] fmt0=57 v: [-0.71,0.47,z=0.00000,col=FFFFFFFF] [0.72,0.47,z=0.00000,col=FFFFFFFF] [0.72,0.15,z=0.00000,col=FFFFFFFF] [-0.71,0.15,z=0.00000,col=FFFFFFFF] [0.76,-0.05,z=0.00000,col=FFFFFFFF] [0.82,-0.05,z=0.00000,col=FFFFFFFF] [0.82,-0.10,z=0.00000,col=FFFFFFFF] [0.76,-0.10,z=0.00000,col=FFFFFFFF]
17 prim=13 indices=4 vs=0xE0BAFB4F520FE441 ps=0xE59B2B3DA4AA9008 tex[base=0x0BE30000 1280x768 fmt=6]
vb=0x15076F90 stride=24 attrs=[57@0 6@12 37@16 ] fmt0=57 v: [-0.79,0.15,z=0.00000,col=FFFFFFFF] [0.76,0.15,z=0.00000,col=FFFFFFFF] [0.76,-0.14,z=0.00000,col=FFFFFFFF] [-0.79,-0.14,z=0.00000,col=FFFFFFFF]
18 prim=13 indices=8 vs=0xE0BAFB4F520FE441 ps=0xE59B2B3DA4AA9008 tex[base=0x11C80000 1280x768 fmt=6]
vb=0x15076FF0 stride=24 attrs=[57@0 6@12 37@16 ] fmt0=57 v: [-0.54,-0.82,z=0.00000,col=FFFFFFFF] [0.54,-0.82,z=0.00000,col=FFFFFFFF] [0.54,-0.87,z=0.00000,col=FFFFFFFF] [-0.54,-0.87,z=0.00000,col=FFFFFFFF] [-0.40,-0.53,z=0.00000,col=FFFFFFFF] [0.40,-0.53,z=0.00000,col=FFFFFFFF] [0.40,-0.67,z=0.00000,col=FFFFFFFF] [-0.40,-0.67,z=0.00000,col=FFFFFFFF]
19 prim=13 indices=4 vs=0xE0BAFB4F520FE441 ps=0xE59B2B3DA4AA9008 tex[base=0x0B2C0000 1280x768 fmt=6]
vb=0x150770B0 stride=24 attrs=[57@0 6@12 37@16 ] fmt0=57 v: [-0.42,-0.49,z=0.00000,col=1EFFFFFF] [0.42,-0.49,z=0.00000,col=1EFFFFFF] [0.42,-0.70,z=0.00000,col=1EFFFFFF] [-0.42,-0.70,z=0.00000,col=1EFFFFFF]
20 prim=8 indices=3 vs=0x72CBCAA6A7984111 ps=0xE59B2B3DA4AA9008 tex[base=0x10000000 1x1 fmt=26]
21 prim=8 indices=3 vs=0x72CBCAA6A7984111 ps=0xE59B2B3DA4AA9008 tex[base=0x10000000 1x1 fmt=26]
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