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Cockpit: punch patches ARE the windows -- all 8 mechs authentic (task #55)

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Resolved the non-Madcat blocked views. Rendering every *_COP shell offline
from its mech's AUTHORED eye (SKL [jointeye] translation -- incl. the Thor's
+1.13 offset cockpit) with faces coloured by punch flag showed the answer
plainly: the PUNCH-tagged patches sit exactly over the window apertures in
all 8 mechs. On these texture-less black-diffuse shells dpl_Punchize renders
the tagged geogroup as holes -- the punch patches are the transparent
WINDSHIELDS, and the visible frame is only the non-punch geometry.

The loader now drops the punch batches of _cop meshes (bgfload finish();
BT_COP_KEEPPUNCH=1 keeps them for diagnosis). In-game sweep on pure defaults:
- madcat: the dark dome frame (matches gameplay footage)
- thor / owens / sunder: authentic brace/dash/pillar remnants
- bhk1 / loki / vulture / avatar: authentically FRAMELESS (all-punch
  canopies -- the pod showed no frame for those mechs)

(An early-session test that "disproved" drop-punch ran with the broken
pre-inverse eye; its conclusion was wrong and is corrected in the KB.)

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
This commit is contained in:
arcattack
2026-07-11 07:49:33 -05:00
co-authored by Claude Fable 5
parent 946323b696
commit 8057c37e5b
3 changed files with 43 additions and 13 deletions
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engine/MUNGA_L4/bgfload.cpp
+27 -3
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@@ -1075,6 +1075,32 @@ struct Builder {
}
void finish() {
// COCKPIT WINDSHIELD = THE PUNCH PATCHES (task #55, resolved 2026-07-11): on the
// texture-less black-diffuse canopy shells, dpl_Punchize renders the tagged
// geogroup as HOLES -- the punch patches are the transparent WINDOWS, and the
// visible frame is ONLY the non-punch geometry. Verified by rendering every
// shell from its mech's AUTHORED eye (SKL [jointeye] translation, incl. the
// Thor's +1.13 offset cockpit): the punch panes sit exactly over the window
// apertures in all 8 mechs; dropping them yields the Madcat's dome frame
// (non-punch) and the authentically FRAMELESS views of the all-punch shells
// (bhk1/loki/vulture/avatar -- the pod showed no canopy for those). (An
// early-session in-game test that "disproved" drop-punch ran with the broken
// pre-inverse eye; its conclusion was wrong.) BT_COP_KEEPPUNCH=1 keeps the
// punch panes (diagnostic).
if (meshIsCop) {
static int s_keepPunch = -1;
if (s_keepPunch < 0) { const char* e = getenv("BT_COP_KEEPPUNCH"); s_keepPunch = (e && e[0] != '0') ? 1 : 0; }
if (!s_keepPunch) {
std::vector<BgfDrawBatch> kept;
kept.reserve(mesh->batches.size());
for (const BgfDrawBatch& b : mesh->batches) {
if (b.punch && b.hasRamp && b.texPath.empty())
continue; // window pane -> transparent
kept.push_back(b);
}
mesh->batches.swap(kept);
}
}
// COCKPIT CANOPY WINDING ORIENTATION (task #55): the *_cop shells are OPEN strut
// lattices (38-59% boundary edges, all 12 mechs) drawn SINGLE-SIDED (emitTri) so
// the openings show the world. But the authored winding is NOT globally
@@ -1083,9 +1109,7 @@ struct Builder {
// struts and the other half's BACKS (the solid-box look on BLX/OWX/VUX...).
// Data-driven fix: orient every canopy face INWARD, toward the mesh interior
// where the pilot's eye sits, so the whole shell reads correctly from inside
// regardless of per-patch mirroring. (An earlier pass DROPPED the PUNCH-tagged
// batches believing them the windshield glass -- verified wrong in-game: the
// punch patch IS the visible frame.) BT_COP_FLIP=1 flips the final orientation
// regardless of per-patch mirroring. BT_COP_FLIP=1 flips the final orientation
// (diagnostic); BT_COP_DOUBLE=1 disables single-siding entirely (emitTri).
if (meshIsCop) {
static int s_flip = -1, s_dbl = -1;