From c0bcc3740ea4c6662f9707d49ab5c7132bb2a0a8 Mon Sep 17 00:00:00 2001
From: Cosmic Linden <cosmic@lindenlab.com>
Date: Wed, 6 Sep 2023 11:47:34 -0700
Subject: SL-20167: Don't block clipboard if GLTF material is null

---
 indra/newview/llmaterialeditor.cpp | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/indra/newview/llmaterialeditor.cpp b/indra/newview/llmaterialeditor.cpp
index 8f4e0658f6..d4ea725af7 100644
--- a/indra/newview/llmaterialeditor.cpp
+++ b/indra/newview/llmaterialeditor.cpp
@@ -1949,6 +1949,24 @@ bool LLMaterialEditor::canSaveObjectsMaterial()
 
 bool LLMaterialEditor::canClipboardObjectsMaterial()
 {
+    if (LLSelectMgr::getInstance()->getSelection()->getObjectCount() != 1)
+    {
+        return false;
+    }
+
+    struct LLSelectedTEGetNullMat : public LLSelectedTEFunctor
+    {
+        bool apply(LLViewerObject* objectp, S32 te_index)
+        {
+            return objectp->getRenderMaterialID(te_index).isNull();
+        }
+    } null_func;
+
+    if (LLSelectMgr::getInstance()->getSelection()->applyToTEs(&null_func))
+    {
+        return true;
+    }
+
     LLSelectedTEGetMatData func(true);
     LLPermissions permissions;
     LLViewerInventoryItem* item_out;
-- 
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