hex_to_rgba put sRGB fractions straight into Blender's LINEAR Base Color
socket, so baseColorFactor shipped linear-encoded-as-sRGB and three's
linear->sRGB display step made every surface one gamma step too light
and desaturated, on every asset, since Sprint 1. Measured: leaf_gum
#7C8F5E displayed #B9C5A3, bark_gum #BFB8A8 displayed #E0DDD4 (the
near-white gum trunk THREADS blamed on Blender's view transform).
Fixed at source with the exact IEC curve (alpha untouched — coverage,
not colour) and the whole factory rebuilt: ALL ASSETS PASS. e.test now
pins mat.color.getHexString(SRGBColorSpace) against the authored PAL hex
— factory intent vs what the runtime draws, the one comparison neither
end can fake. Mutation-checked red-then-green against the pre-fix GLB.
523/0/0, verified by eye in the running game before and after.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Textures (SPRINT2 §Lane E-2). sail_weave.png is a seamless 512² knitted
shade-cloth weave with the stripe banding real cloth has; the script proves the
wrap by evaluating a second tile and requiring an exact match, because Lane B is
being told to set RepeatWrapping and a bad wrap would seam across the whole
sail. Luminance rides in a narrow band so it multiplies the base colour instead
of replacing it — high contrast reads as burlap, not HDPE. Dropped the per-pixel
noise: invisible at ±0.012 and incompressible, it cost 305 KB of the 323.
sail_tears.png is a strip of 4 escalating rips. Each is a lens, not a slit —
fabric under tension parts widest in the middle and tapers to a point, and a
constant-width gap reads as a drawn line. Threads bridge the gap, scaled to the
local width; without them a dark lens is a hole rather than a tear.
Dressing (§Lane E-3): wheelie_bin_01 (240 L, 12 kg, `lid` on its own node so it
flaps before the bin goes over), washing_line_01 (a Hills Hoist — the `head`
freewheels, giving a second wind tell at head height), garden_gnome_01
(collateral bait: a smashed gnome reads where a damage number doesn't).
Bin and tramp land in models/debris/ for Lane C to glob. All 19 assets pass, 28
output files byte-identical across two runs, selftest 129/0/0.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
