The faithful fix for the spotty dungeon/house/outdoor lighting is retail's per-vertex
static-light bake (D3DPolyRender::SetStaticLightingVertexColors 0x0059cfe0), NOT a
per-pixel ramp. This lands the GL-free Core: LightBake.PointContribution /
ComputeVertexColor port calc_point_light (0x0059c8b0) VERBATIM — verified against a
clean Ghidra decompile (the BN pseudo-C is x87-mangled): half-Lambert wrap with
LIGHT_POINT_RANGE=0.75 (0x007e5430), the distsq>1 norm branch, the per-channel
min-to-color clamp, and the final [0,1] clamp. static_light_factor=1.3 (0x00820e24)
is already folded into LightSource.Range by LightInfoLoader.
7 conformance tests (hand-derived golden values) green. NOT wired yet — the
integration (a per-vertex colour attribute on the cell mesh + the bake driver keyed
on envCellId + the shader consumption) is the remaining A7 work; see ISSUES.md A7.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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