From 5d1255454873c80354764e940da902dc23e55a49 Mon Sep 17 00:00:00 2001
From: Wojtek Figat <wojtek@figat.pl>
Date: Mon, 6 Dec 2021 19:43:17 +0100
Subject: [PATCH] Fix material function usage regression

---
 .../Tools/MaterialGenerator/MaterialGenerator.Material.cpp      | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Source/Engine/Tools/MaterialGenerator/MaterialGenerator.Material.cpp b/Source/Engine/Tools/MaterialGenerator/MaterialGenerator.Material.cpp
index ad3026764..cd610153b 100644
--- a/Source/Engine/Tools/MaterialGenerator/MaterialGenerator.Material.cpp
+++ b/Source/Engine/Tools/MaterialGenerator/MaterialGenerator.Material.cpp
@@ -329,7 +329,7 @@ void MaterialGenerator::ProcessGroupMaterial(Box* box, Node* node, Value& value)
 
         // Evaluate the function output
         _graphStack.Push(graph);
-        value = tryGetValue(functionOutputBox, Value::Zero);
+        value = functionOutputBox && functionOutputBox->HasConnection() ? eatBox(node, functionOutputBox->FirstConnection()) : Value::Zero;
         _graphStack.Pop();
         break;
     }