From 74a2211f952b4eda13e8bd2bafd8259cd6bf8efd Mon Sep 17 00:00:00 2001
From: Hans Goudey <hans@blender.org>
Date: Sun, 3 Aug 2025 11:18:59 -0400
Subject: [PATCH] Geometry Nodes: Increase parallelism in Geometry Proximity
 node

The default grain size of 10000 for multi function execution was much
too large for the fairly expensive BVH traversal. In the file from
#143455, reducing te grain size to 512 increase the playback FPS from
8 to 20.
---
 source/blender/nodes/geometry/nodes/node_geo_proximity.cc | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/source/blender/nodes/geometry/nodes/node_geo_proximity.cc b/source/blender/nodes/geometry/nodes/node_geo_proximity.cc
index 6a6052a1d34..864a85f2849 100644
--- a/source/blender/nodes/geometry/nodes/node_geo_proximity.cc
+++ b/source/blender/nodes/geometry/nodes/node_geo_proximity.cc
@@ -247,6 +247,13 @@ class ProximityFunction : public mf::MultiFunction {
       }
     });
   }
+
+  ExecutionHints get_execution_hints() const override
+  {
+    ExecutionHints hints;
+    hints.min_grain_size = 512;
+    return hints;
+  }
 };
 
 static void node_geo_exec(GeoNodeExecParams params)