From 3e807dbc29371218e48691a5c1cfd2384bd74030 Mon Sep 17 00:00:00 2001
From: Cosmic Linden <cosmic@lindenlab.com>
Date: Mon, 19 Sep 2022 14:20:00 -0700
Subject: SL-18001: Update GLTF material when receiving LLRenderMaterialParams
 on updated object

---
 indra/newview/llviewerobject.cpp | 31 +++++++++++++++++++++++++++++++
 indra/newview/llviewerobject.h   |  1 +
 2 files changed, 32 insertions(+)

diff --git a/indra/newview/llviewerobject.cpp b/indra/newview/llviewerobject.cpp
index bdc47e0c50..5829ccb6d8 100644
--- a/indra/newview/llviewerobject.cpp
+++ b/indra/newview/llviewerobject.cpp
@@ -6221,6 +6221,14 @@ void LLViewerObject::parameterChanged(U16 param_type, LLNetworkData* data, BOOL
 			LL_WARNS() << "Failed to send object extra parameters: " << param_type << LL_ENDL;
 		}
 	}
+    else
+    {
+        if (param_type == LLNetworkData::PARAMS_RENDER_MATERIAL)
+        {
+            const LLRenderMaterialParams* params = in_use ? (LLRenderMaterialParams*)getParameterEntry(LLNetworkData::PARAMS_RENDER_MATERIAL) : nullptr;
+            setRenderMaterialIDs(params, local_origin);
+        }
+    }
 }
 
 void LLViewerObject::setDrawableState(U32 state, BOOL recursive)
@@ -7083,6 +7091,29 @@ void LLViewerObject::setRenderMaterialID(U8 te, const LLUUID& id)
     }
 }
 
+void LLViewerObject::setRenderMaterialIDs(const LLRenderMaterialParams* material_params, bool local_origin)
+{
+    if (!local_origin)
+    {
+        const S32 num_tes = llmin((S32)getNumTEs(), (S32)getNumFaces()); // avatars have TEs but no faces
+        for (S32 te = 0; te < num_tes; ++te)
+        {
+            const LLUUID& id = material_params ? material_params->getMaterial(te) : LLUUID::null;
+            if (id.notNull())
+            {
+                getTE(te)->setGLTFMaterial(gGLTFMaterialList.getMaterial(id));
+                setHasRenderMaterialParams(true);
+            }
+            else
+            {
+                getTE(te)->setGLTFMaterial(nullptr);
+            }
+        }
+        faceMappingChanged();
+        gPipeline.markTextured(mDrawable);
+    }
+}
+
 class ObjectPhysicsProperties : public LLHTTPNode
 {
 public:
diff --git a/indra/newview/llviewerobject.h b/indra/newview/llviewerobject.h
index 109c96dc9c..680cfb9639 100644
--- a/indra/newview/llviewerobject.h
+++ b/indra/newview/llviewerobject.h
@@ -185,6 +185,7 @@ public:
 
     const LLUUID& getRenderMaterialID(U8 te) const;
     void setRenderMaterialID(U8 te, const LLUUID& id);
+    void setRenderMaterialIDs(const LLRenderMaterialParams* material_params, bool local_origin);
 
 	virtual BOOL	isHUDAttachment() const { return FALSE; }
 	virtual BOOL	isTempAttachment() const;
-- 
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