Resolve the Fix D contradiction with decomp (workflow wf_f660eb88 + adversarial
verify) + 4 live cdb captures. The D3D-FF model was the WRONG oracle: retail has
TWO light systems — STATIC torches BAKE into wall vertices (calc_point_light,
triple-clamped: range gate + per-channel min(scale*color,color) + per-vertex
[0,1] from black), DYNAMIC lights go D3D hardware. The captured intensity=100 is
the purple PORTAL (magenta, dynamic), not a wall torch. Ground truth: 38 static
warm torches (orange (1,0.588,0.314)/cream, intensity=100, falloff 3-5) + 2 dynamic.
acdream over-brightness = two confirmed bugs: D-1 mesh_modern.vert folds
ambient+sun+torches into one UNCLAMPED accumulator (single frag clamp) -> warm
blowout; D-2 EnvCellRenderer never binds SSBO 4/5 so the cell shell reads a leaked
light set. Spec: D-1 in-shader clamp-split (clamp the torch sum on its own before
ambient/sun); D-2 bind the shell's own per-cell light set (mirror WbDrawDispatcher);
LightBake.cs is the C# conformance oracle. Adds the 4 reusable cdb capture scripts.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Session handoff: live-cdb grounding shipped Fix A (point-light shape), Fix B
(per-object selection), Fix C (sun-vector magnitude / ~32% over-bright). Fix D
(outdoor objects too bright near torches) is fully grounded but BLOCKED on one
capture (the building's render path) — the D3D-FF math says it'd make objects
brighter, so not ported. Full cdb cheat-sheet + the contradiction + the next
capture in the doc.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
