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perf(av-live-body): lag + popin interp fixes

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alpha 0.5 -> 0.25 : lerp s'etale sur la frame Python
au lieu de converger en 100 ms puis figer. Persistance
entite 500 ms : une frame Multi-HMR ratee n'efface plus
le mesh. Skip recompute normales pendant interp ticks
(stale ~150 ms invisible vs 24 ms/tick economises).
This commit is contained in:
L'électron rare
2026-05-13 18:53:29 +02:00
parent 278ed55f02
commit dc7de90b18
1 changed files with 24 additions and 9 deletions
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launcher/AV-Live-Body/Sources/AVLiveBody/MeshRenderer.swift
+24 -9
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@@ -20,13 +20,18 @@ final class MeshRenderer: ObservableObject {
var target: [SIMD3<Float>]
}
private var interpStates: [Int: InterpState] = [:]
private var lastSeenAt: [Int: TimeInterval] = [:]
private var sceneSub: (any Cancellable)?
private var interpTickCounter: Int = 0
// SceneEvents.Update fires ~60 fps ; on lerp 1 tick sur 2 = 30 fps.
// Alpha re-ajuste pour atteindre ~90% du gap en ~115 ms a 30 Hz
// (au lieu de 60 Hz precedemment) -> alpha plus eleve.
private static let interpAlpha: Float = 0.5
// alpha=0.25 : 94% du gap parcouru en ~330 ms (~1 frame Python a
// 3 fps), donc le mesh bouge en continu plutot que de figer 200 ms
// entre deux frames Python.
private static let interpAlpha: Float = 0.25
private static let interpStride: Int = 2
// Persistance des entites : ne pas retirer un pid manquant pendant
// 500 ms (Multi-HMR peut sauter une frame de detection).
private static let entityRetainSec: TimeInterval = 0.5
init() {
loadFaces()
@@ -109,13 +114,23 @@ final class MeshRenderer: ObservableObject {
}
func updatePersons(_ persons: [SMPLXPersonData]) {
let now = CACurrentMediaTime()
let receivedPids = Set(persons.map { $0.pid })
for (pid, _) in personEntities where !receivedPids.contains(pid) {
personEntities.removeValue(forKey: pid)
lowLevelMeshes.removeValue(forKey: pid)
wireframeMeshes.removeValue(forKey: pid)
wireframeEntities.removeValue(forKey: pid)
interpStates.removeValue(forKey: pid)
for pid in receivedPids { lastSeenAt[pid] = now }
let cutoff = now - Self.entityRetainSec
// Retirer seulement les pids non vus depuis plus de retainSec.
// Une absence transitoire (1 frame Multi-HMR ratee) n'efface
// donc plus le mesh.
for (pid, _) in personEntities {
let seen = lastSeenAt[pid] ?? 0
if seen < cutoff {
personEntities.removeValue(forKey: pid)
lowLevelMeshes.removeValue(forKey: pid)
wireframeMeshes.removeValue(forKey: pid)
wireframeEntities.removeValue(forKey: pid)
interpStates.removeValue(forKey: pid)
lastSeenAt.removeValue(forKey: pid)
}
}
for p in persons {
let entity: ModelEntity