Added a counter for the ms complete of reify loop

hexagon_launcher/src/main.rs

@@ -19,9 +19,12 @@ use stardust_xr_fusion::{
 };
 use std::f32::consts::{FRAC_PI_2, PI};
 use std::sync::atomic::{AtomicUsize, Ordering};
+use std::sync::atomic::AtomicU64;
 use tokio::time::Duration;
 
 static REIFY_COUNT: AtomicUsize = AtomicUsize::new(0);
+static REIFY_TOTAL_NS: AtomicU64 = AtomicU64::new(0);
+static APP_REIFY_COUNT: AtomicUsize = AtomicUsize::new(0);
 
 use tracing_subscriber::{EnvFilter, Layer, layer::SubscriberExt, util::SubscriberInitExt};
 
@@ -34,7 +37,15 @@ async fn main() {
 		loop {
 			tokio::time::sleep(Duration::from_secs(1)).await;
 			let v = REIFY_COUNT.swap(0, Ordering::Relaxed);
-			tracing::info!(reify_per_sec = v, "hexagon reify rate");
+			let total_ns = REIFY_TOTAL_NS.swap(0, Ordering::Relaxed);
+			let app_hits = APP_REIFY_COUNT.swap(0, Ordering::Relaxed);
+			let avg_ns = if v > 0 { total_ns / (v as u64) } else { 0 };
+			tracing::info!(
+				reify_per_sec = v,
+				avg_reify_ms = (avg_ns as f64) / 1_000_000.0,
+				app_reify_hits = app_hits,
+				"hexagon reify stats"
+			);
 		}
 	});
 
@@ -103,11 +114,11 @@ impl ClientState for HexagonLauncher {
 impl Reify for HexagonLauncher {
 	#[tracing::instrument(skip_all)]
 	fn reify(&self) -> impl Element<Self> {
-		// increment counter so we can observe how often reify is called
-		REIFY_COUNT.fetch_add(1, Ordering::Relaxed);
+		// measure reify latency and count
+		let start = std::time::Instant::now();
 
 		// Build UI based on current state
-		Grabbable::new(
+		let elem = Grabbable::new(
              Shape::Cylinder(CylinderShape {
                  radius: APP_SIZE / 2.0,
                  length: 0.01,
@@ -115,7 +126,15 @@ impl Reify for HexagonLauncher {
              self.pos,
              self.rot,
              |state: &mut Self, pos, rot| {
+                 // only update if changed enough to avoid constant reify
+                 let dx = (state.pos.x - pos.x).abs();
+                 let dy = (state.pos.y - pos.y).abs();
+                 let dz = (state.pos.z - pos.z).abs();
+                 if dx > 0.0005 || dy > 0.0005 || dz > 0.0005 {
+                     tracing::trace!(?pos, "updating grab position");
                      state.pos = pos;
+                 }
+                 // rotation updates can also be debounced if noisy
                  state.rot = rot;
              },
          )
@@ -126,6 +145,7 @@ impl Reify for HexagonLauncher {
          .child(
              Button::new(|state: &mut HexagonLauncher| {
                  state.open = !state.open;
+                 tracing::debug!(open = state.open, "toggled hexagon open");
              })
              .pos([0.0, 0.0, 0.005])
              .size([APP_SIZE / 2.0; 2])
@@ -155,6 +175,9 @@ impl Reify for HexagonLauncher {
                              .pos(Hex::spiral(i + 1).get_coords())
                              .build()
                              .child(app.reify_substate(move |state: &mut HexagonLauncher| {
+                                 // log & count access to per-app substate
+                                 APP_REIFY_COUNT.fetch_add(1, Ordering::Relaxed);
+                                 tracing::trace!(index = i, "accessing app substate");
                                  state.apps.get_mut(i)
                              }))
                      })
@@ -162,5 +185,11 @@ impl Reify for HexagonLauncher {
                  .into_iter()
                  .flatten(),
          )
+		;
+
+         let elapsed = start.elapsed().as_nanos() as u64;
+         REIFY_TOTAL_NS.fetch_add(elapsed, Ordering::Relaxed);
+         REIFY_COUNT.fetch_add(1, Ordering::Relaxed);
+		elem
 	}
 }