From 5064a7a5fe881b4b6b2e4174ecdb667a2aada65b Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=C3=96mercan=20Yazici?= <yazici@cg.uni-saarland.de>
Date: Mon, 27 Jul 2026 11:36:47 +0200
Subject: [PATCH] expose the merge accel build timer to subclasses for
 per-iteration stage timing

---
 SeeSharp/Integrators/Bidir/VertexConnectionAndMerging.cs | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/SeeSharp/Integrators/Bidir/VertexConnectionAndMerging.cs b/SeeSharp/Integrators/Bidir/VertexConnectionAndMerging.cs
index d403f09..dbee096 100644
--- a/SeeSharp/Integrators/Bidir/VertexConnectionAndMerging.cs
+++ b/SeeSharp/Integrators/Bidir/VertexConnectionAndMerging.cs
@@ -267,7 +267,8 @@ public override void Render(Scene scene)
         }
     }
 
-    Stopwatch mergeBuildTimer;
+    /// <summary>Accumulates the photon-map build time across iterations; reported as MergeAccelBuildTime.</summary>
+    protected Stopwatch mergeBuildTimer;
 
     /// <summary>
     /// Generates the acceleration structure for merging