Three testers reported a black rectangle swaying with the footsteps in the
thor cockpit (Summoner = the thr1 label, same THX canopy -- no isolation).
Decode: the inside view is a PER-MECH AUTHORED type-A set, not the cop
alone (no fallback in EntitySegment::GetVideoObjectName -- authored data):
madcat/vulture/bhk1 = cop; sunder/loki/avatar = +tor; thor = +tor +MSL
(the shoulder pod, the reported rectangle); owens = +both legs +tshd.
The pod/leg pilot-facing surfaces use the SAME "<pfx>skin:blakskn_dz_*"
interior-structure material as the canopy frame, but the unlit frame
constant was keyed on the _cop FILENAME -- identical material rendered
(0.13,0.12,0.15) on the canopy and pure (0,0,0) on the pod/legs
([matlog]: owx_cop blakskn vcol=FF211F26 vs owx_lule vcol=FF000000).
Fix (bgfload.cpp): the frame-constant treatment keys on meshIsCop OR
material contains "skin:blakskn_dz_". mechfx:blakskn_mtl (tshd shadow
quads) deliberately excluded. Verified: zero pure-black px in the lower
view band across walk captures, the pod plate renders frame-toned and
blends with the bar at rest (the reported anomaly dissolves), owens legs
read as coherent structure, canopy/terrain un-regressed.
Diags added: BT_MAT_LOG=<stem> per-batch material routing dump (bgfload),
BT_HIDE_INSIDE_SEG=<substr> inside-mesh hide (btl4vid), [view] per-segment
inside-roster names. KB: cockpit-view.md exactly-one claim corrected +
the #91 section; bench scratchpad/night11/thorrect.sh.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
