diff --git a/indra/newview/app_settings/settings.xml b/indra/newview/app_settings/settings.xml
old mode 100644
new mode 100755
index c4af9e2ab6..75bd29ecd4
--- a/indra/newview/app_settings/settings.xml
+++ b/indra/newview/app_settings/settings.xml
@@ -5545,6 +5545,17 @@
     <key>Value</key>
     <real>0</real>
   </map>
+  <key>MeshUseWholeModelUpload</key>
+  <map>
+    <key>Comment</key>
+    <string>Upload model in its entirety instead of mesh-by-mesh (new caps)</string>
+    <key>Persist</key>
+    <integer>1</integer>
+    <key>Type</key>
+    <string>Boolean</string>
+    <key>Value</key>
+    <real>0</real>
+  </map>
   <key>MigrateCacheDirectory</key>
     <map>
       <key>Comment</key>
diff --git a/indra/newview/llmeshrepository.cpp b/indra/newview/llmeshrepository.cpp
old mode 100644
new mode 100755
index dd2ffdf7f1..4c04b0ea35
--- a/indra/newview/llmeshrepository.cpp
+++ b/indra/newview/llmeshrepository.cpp
@@ -1239,6 +1239,7 @@ LLMeshUploadThread::LLMeshUploadThread(LLMeshUploadThread::instance_list& data,
 	
 	mUploadObjectAssetCapability = gAgent.getRegion()->getCapability("UploadObjectAsset");
 	mNewInventoryCapability = gAgent.getRegion()->getCapability("NewFileAgentInventoryVariablePrice");
+	mWholeModelUploadCapability = gAgent.getRegion()->getCapability("NewFileAgentInventory");
 
 	mOrigin += gAgent.getAtAxis() * scale.magVec();
 }
@@ -1329,6 +1330,70 @@ BOOL LLMeshUploadThread::isDiscarded()
 }
 
 void LLMeshUploadThread::run()
+{
+	if (gSavedSettings.getBOOL("MeshUseWholeModelUpload"))
+	{
+		doWholeModelUpload();
+	}
+	else
+	{
+		doIterativeUpload();
+	}
+}
+
+void LLMeshUploadThread::doWholeModelUpload()
+{
+	// Queue up models for hull generation (viewer-side)
+	for (instance_map::iterator iter = mInstance.begin(); iter != mInstance.end(); ++iter)
+	{
+		LLMeshUploadData data;
+		data.mBaseModel = iter->first;
+
+		LLModelInstance& instance = *(iter->second.begin());
+
+		for (S32 i = 0; i < 5; i++)
+		{
+			data.mModel[i] = instance.mLOD[i];
+		}
+
+		//queue up models for hull generation
+		LLModel* physics = NULL;
+
+		if (data.mModel[LLModel::LOD_PHYSICS].notNull())
+		{
+			physics = data.mModel[LLModel::LOD_PHYSICS];
+		}
+		else if (data.mModel[LLModel::LOD_MEDIUM].notNull())
+		{
+			physics = data.mModel[LLModel::LOD_MEDIUM];
+		}
+		else
+		{
+			physics = data.mModel[LLModel::LOD_HIGH];
+		}
+
+		if (!physics)
+		{
+			llerrs << "WTF?" << llendl;
+		}
+
+		DecompRequest* request = new DecompRequest(physics, data.mBaseModel, this);
+		gMeshRepo.mDecompThread->submitRequest(request);
+	}
+
+	while (!mPhysicsComplete)
+	{
+		apr_sleep(100);
+	}
+
+	bool do_include_textures = false; // not needed for initial cost/validation check.
+	LLSD model_data = wholeModelToLLSD(do_include_textures);
+	
+	// Currently a no-op.
+	mFinished = true;
+}
+
+void LLMeshUploadThread::doIterativeUpload()
 {
 	if(isDiscarded())
 	{
diff --git a/indra/newview/llmeshrepository.h b/indra/newview/llmeshrepository.h
old mode 100644
new mode 100755
index 5983a282a2..e2faed52cf
--- a/indra/newview/llmeshrepository.h
+++ b/indra/newview/llmeshrepository.h
@@ -387,6 +387,7 @@ public:
 	LLHost			mHost;
 	std::string		mUploadObjectAssetCapability;
 	std::string		mNewInventoryCapability;
+	std::string		mWholeModelUploadCapability;
 
 	std::queue<LLMeshUploadData> mUploadQ;
 	std::queue<LLMeshUploadData> mConfirmedQ;
@@ -420,6 +421,9 @@ public:
 	void preStart();
 	void discard() ;
 	BOOL isDiscarded();
+
+	void doWholeModelUpload();
+	void doIterativeUpload();
 };
 
 class LLMeshRepository