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diag(render): [portal-churn] probe — per-Build re-enqueue + reciprocal pre/post

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Step 4 summary-emit adapted from the plan: the plan's Invariant($"a" + $"b" + sb) form

passes a string to FormattableString.Invariant (which requires a FormattableString) and

does not compile; merged the two interpolated fragments into one literal and appended the

already-invariant-formatted reciprocal detail outside the Invariant call. Same output.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
This commit is contained in:
Erik 2026-06-08 12:51:48 +02:00
parent 687040ba52
commit e6fe4c611a
1 changed files with 22 additions and 0 deletions
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22
src/AcDream.App/Rendering/PortalVisibilityBuilder.cs
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@ -112,6 +112,12 @@ public static class PortalVisibilityBuilder
var popCounts = new Dictionary<uint, int>(); // per-cell pop count for the MaxReprocessPerCell cap
var trace = PortalBuildTrace.Start(cameraCell, cameraPos);
// [portal-churn] apparatus (2026-06-08): when ProbePortalChurnEnabled, accumulate re-enqueue churn
// + reciprocal pre/post region counts, emitted as one summary line at end of Build. Inert when off.
bool churnProbe = AcDream.Core.Rendering.RenderingDiagnostics.ProbePortalChurnEnabled;
int churnReenqueues = 0;
var churnReciprocal = churnProbe ? new System.Text.StringBuilder(256) : null;
bool pvDump = false;
if (s_pvDump)
{
@ -295,6 +301,9 @@ public static class PortalVisibilityBuilder
var preReciprocalClip = eyeInsideOpening ? CloneViewPolygons(clippedRegion) : null;
int preReciprocalCount = clippedRegion.Count;
ApplyReciprocalClip(clippedRegion, portal.OtherPortalId, neighbour, viewProj);
if (churnProbe)
churnReciprocal!.Append(System.FormattableString.Invariant(
$" recip[0x{neighbourId:X8} {preReciprocalCount}->{clippedRegion.Count}]"));
if (clippedRegion.Count == 0)
{
if (preReciprocalClip is null)
@ -324,6 +333,7 @@ public static class PortalVisibilityBuilder
dist = NearestPortalVertexDistance(poly, cell.WorldTransform, cameraPos);
todo.Insert(neighbour, dist);
inserted = true;
if (churnProbe) churnReenqueues++;
}
trace?.Add($"portal cell=0x{cell.CellId:X8} p{i}->0x{neighbourId:X8} addCell polys={clippedRegion.Count} clipVerts={clipVerts} recip={preReciprocalCount}->{clippedRegion.Count} grew={grew} queued={inserted} dist={(float.IsNaN(dist) ? "na" : dist.ToString("F2"))}");
}
@ -338,6 +348,18 @@ public static class PortalVisibilityBuilder
EmitFlapProbe(cameraCell, cameraPos, viewProj, frame);
trace?.Emit(frame);
if (churnProbe)
{
int maxPop = 0; uint maxCell = 0; int rePopped = 0;
foreach (var kv in popCounts)
{
if (kv.Value > maxPop) { maxPop = kv.Value; maxCell = kv.Key; }
if (kv.Value > 1) rePopped++;
}
Console.WriteLine(System.FormattableString.Invariant(
$"[portal-churn] root=0x{cameraCell.CellId:X8} cells={frame.OrderedVisibleCells.Count} reEnqueues={churnReenqueues} rePoppedCells={rePopped} maxPop=0x{maxCell:X8}:{maxPop}") + churnReciprocal);
}
return frame;
}