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feat(render) Campaign FW1: the degrade-level BSP gate kills the wrong punches

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The offline degrade probe proved the mechanism: every Holtburg building
carries PORT nodes ONLY in its level-0 GfxObj (out to ~24-48 m); every
degraded level has zero. Retail walks the CURRENT degrade level BSP
(part->gfxobj[deg_level]) - that is what limits look-in punches to the
nearest buildings. WalkBuilding gains the degrade ladder +
SelectDrawingBsp (band pick; UpdateViewerDistance hysteresis is a port
TODO), the walk selects per viewer distance, the adapter builds
per-level BSPs, and the stab-list load rule (CLandBlock::init_buildings
@0052fd80: a full-res block loads exactly its buildings portal stab
cells) replaces load-everything in the landscape builder. The sweep now
shows clean rosters with all far-building punches gone; remaining
deltas: the near buildings 001a/0022 (50 m/28 m center distance vs the
48 m band edge - sphere-adjusted distance/hysteresis to port) and the
one ring-1 frustum boundary pair (aab50002/a9b3003c).

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
This commit is contained in:
Erik 2026-08-30 10:51:05 +02:00
parent e5cdd2364e
commit b3ac5872e9
8 changed files with 90 additions and 12 deletions
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9
src/AcDream.App/Rendering/Walk/RetailFrameWalk.cs
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@ -136,6 +136,11 @@ public sealed class RetailFrameWalk
{
sink.Emit(WalkEvent.Building(building.PositionCellId));
if (!building.HasGeometry) return;
// Retail walks the CURRENT degrade level's drawing BSP
// (part->gfxobj[deg_level]); a degraded-out slot skips everything
// after publishing the portal list.
WalkBspNode? bsp = building.SelectDrawingBsp(ctx.ViewerDistanceTo(building));
if (bsp is null) return;
int viewCount = Math.Max(activeViews.ViewCount, 0);
var passSink = new PortalPassSink(sink);
@ -144,11 +149,11 @@ public sealed class RetailFrameWalk
{
ctx.SetActiveView(activeViews, v);
WalkBuildingPortals.BuildDrawPortalsOnly(
building.DrawingBsp, 1, viewpoint,
bsp, 1, viewpoint,
(portalRef, pass) => WalkBuildingPortals.DrawPortal(
_outdoorPView, building, portalRef, pass, ctx, passSink));
WalkBuildingPortals.BuildDrawPortalsOnly(
building.DrawingBsp, 2, viewpoint,
bsp, 2, viewpoint,
(portalRef, pass) => WalkBuildingPortals.DrawPortal(
_outdoorPView, building, portalRef, pass, ctx, passSink));
}