From e6639f1e2960faa3ddabd065ed19bbbf4fdf139f Mon Sep 17 00:00:00 2001
From: Alessio Quaglino <quaglino@google.com>
Date: Fri, 6 Feb 2026 10:31:35 -0800
Subject: [PATCH] Apply prefix/suffix to flex material names.

PiperOrigin-RevId: 866518766
Change-Id: I5f042f52a27d2a6c66fe9642bccc73328fe14603
---
 src/user/user_mesh.cc | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/user/user_mesh.cc b/src/user/user_mesh.cc
index 825f8901..5d060117 100644
--- a/src/user/user_mesh.cc
+++ b/src/user/user_mesh.cc
@@ -4036,6 +4036,9 @@ void mjCFlex::NameSpace(const mjCModel* m) {
   for (auto& name : spec_nodebody_) {
     name = m->prefix + name + m->suffix;
   }
+  if (!spec_material_.empty() && model != m) {
+    spec_material_ = m->prefix + spec_material_ + m->suffix;
+  }
 }