diff --git a/indra/llrender/llgltexture.h b/indra/llrender/llgltexture.h
index 03e540f49..122ae7772 100644
--- a/indra/llrender/llgltexture.h
+++ b/indra/llrender/llgltexture.h
@@ -49,6 +49,7 @@ public:
 	enum EBoostLevel
 	{
 		BOOST_NONE 			= 0,
+		BOOST_ALM			, //acts like NONE when ALM is on, max discard when ALM is off
 		BOOST_AVATAR_BAKED	,
 		BOOST_AVATAR		,
 		BOOST_CLOUDS		,
diff --git a/indra/newview/CMakeLists.txt b/indra/newview/CMakeLists.txt
index d745fd1bf..d768993c4 100644
--- a/indra/newview/CMakeLists.txt
+++ b/indra/newview/CMakeLists.txt
@@ -440,6 +440,7 @@ set(viewer_SOURCE_FILES
     llsavedsettingsglue.cpp
     llscrollingpanelparam.cpp
     llscrollingpanelparambase.cpp
+    llsculptidsize.cpp
     llselectmgr.cpp
     llshareavatarhandler.cpp
     llskinningutil.cpp
@@ -976,6 +977,7 @@ set(viewer_HEADER_FILES
     llsavedsettingsglue.h
     llscrollingpanelparam.h
     llscrollingpanelparambase.h
+    llsculptidsize.h
     llselectmgr.h
     llsimplestat.h
     llskinningutil.h
diff --git a/indra/newview/llagent.cpp b/indra/newview/llagent.cpp
index 64a51ac3a..29934eabd 100644
--- a/indra/newview/llagent.cpp
+++ b/indra/newview/llagent.cpp
@@ -934,6 +934,16 @@ void LLAgent::setRegion(LLViewerRegion *regionp)
 			{
 				gSky.mVOGroundp->setRegion(regionp);
 			}
+
+			if (regionp->capabilitiesReceived())
+			{
+				regionp->requestSimulatorFeatures();
+			}
+			else
+			{
+				regionp->setCapabilitiesReceivedCallback(boost::bind(&LLViewerRegion::requestSimulatorFeatures, regionp));
+			}
+
 		}
 		else
 		{
diff --git a/indra/newview/lldrawable.cpp b/indra/newview/lldrawable.cpp
index 1b107c406..d38baddcc 100644
--- a/indra/newview/lldrawable.cpp
+++ b/indra/newview/lldrawable.cpp
@@ -32,6 +32,7 @@
 #include "material_codes.h"
 
 // viewer includes
+#include "llagent.h"
 #include "llcriticaldamp.h"
 #include "llface.h"
 #include "lllightconstants.h"
@@ -49,6 +50,7 @@
 #include "llspatialpartition.h"
 #include "llviewerobjectlist.h"
 #include "llviewerwindow.h"
+#include "lldrawpoolavatar.h"
 
 const F32 MIN_INTERPOLATE_DISTANCE_SQUARED = 0.001f * 0.001f;
 const F32 MAX_INTERPOLATE_DISTANCE_SQUARED = 10.f * 10.f;
@@ -113,6 +115,28 @@ void LLDrawable::init()
 	initVisible(sCurVisible - 2);//invisible for the current frame and the last frame.
 }
 
+void LLDrawable::unload()
+{
+	LLVOVolume *pVVol = getVOVolume();
+	pVVol->setNoLOD();
+
+	for (S32 i = 0; i < getNumFaces(); i++)
+	{
+		LLFace* facep = getFace(i);
+		if (facep->isState(LLFace::RIGGED))
+		{
+			LLDrawPoolAvatar* pool = (LLDrawPoolAvatar*)facep->getPool();
+			if (pool) {
+				pool->removeRiggedFace(facep);
+			}
+			facep->setVertexBuffer(NULL);
+		}
+		facep->clearState(LLFace::RIGGED);
+	}
+
+	pVVol->markForUpdate(TRUE);
+}
+
 // static
 void LLDrawable::initClass()
 {
diff --git a/indra/newview/lldrawable.h b/indra/newview/lldrawable.h
index 2eb683290..1da98e315 100644
--- a/indra/newview/lldrawable.h
+++ b/indra/newview/lldrawable.h
@@ -98,7 +98,7 @@ public:
 	void markDead();			// Mark this drawable as dead
 	BOOL isDead() const			{ return isState(DEAD); }
 	BOOL isNew() const			{ return !isState(BUILT); }
-
+	BOOL isUnload() const		{ return isState(FOR_UNLOAD); }
 	BOOL isLight() const;
 
 	virtual void setVisible(LLCamera& camera_in, std::vector<LLDrawable*>* results = NULL, BOOL for_select = FALSE);
@@ -155,6 +155,7 @@ public:
 	void				mergeFaces(LLDrawable* src);
 
 	void init();
+	void unload();
 	void destroy();
 
 	void update();
@@ -296,6 +297,7 @@ public:
 		PARTITION_MOVE	= 0x10000000,
 		ANIMATED_CHILD  = 0x20000000,
 		ACTIVE_CHILD	= 0x40000000,
+		FOR_UNLOAD		= 0x80000000, //should be unload from memory
 	} EDrawableFlags;
 	
 public:
diff --git a/indra/newview/lldrawpoolavatar.cpp b/indra/newview/lldrawpoolavatar.cpp
index c3afcdbd6..b81820d62 100644
--- a/indra/newview/lldrawpoolavatar.cpp
+++ b/indra/newview/lldrawpoolavatar.cpp
@@ -460,7 +460,7 @@ void LLDrawPoolAvatar::renderShadow(S32 pass)
 	}
 	LLVOAvatar *avatarp = (LLVOAvatar *)facep->getDrawable()->getVObj().get();
 
-	if (avatarp->isDead() || avatarp->mIsDummy || avatarp->mDrawable.isNull())
+	if (avatarp->isDead() || avatarp->isUIAvatar() || avatarp->mDrawable.isNull())
 	{
 		return;
 	}
diff --git a/indra/newview/llface.cpp b/indra/newview/llface.cpp
index b89053fa3..d82b3c974 100644
--- a/indra/newview/llface.cpp
+++ b/indra/newview/llface.cpp
@@ -59,6 +59,7 @@
 #include "llviewershadermgr.h"
 #include "llviewertexture.h"
 #include "llvoavatar.h"
+#include "llsculptidsize.h"
 
 #define LL_MAX_INDICES_COUNT 1000000
 
@@ -851,12 +852,6 @@ BOOL LLFace::genVolumeBBoxes(const LLVolume &volume, S32 f,
 	//get bounding box
 	if (mDrawablep->isState(LLDrawable::REBUILD_VOLUME | LLDrawable::REBUILD_POSITION | LLDrawable::REBUILD_RIGGED))
 	{
-		//VECTORIZE THIS
-		const LLMatrix4a& mat_vert = mat_vert_in;
-		//mat_vert.loadu(mat_vert_in);
-
-		LLVector4a min,max;
-	
 		if (f >= volume.getNumVolumeFaces())
 		{
 			LL_WARNS() << "Generating bounding box for invalid face index!" << LL_ENDL;
@@ -864,77 +859,42 @@ BOOL LLFace::genVolumeBBoxes(const LLVolume &volume, S32 f,
 		}
 
 		const LLVolumeFace &face = volume.getVolumeFace(f);
-		min = face.mExtents[0];
-		max = face.mExtents[1];
 		
-		llassert(less_than_max_mag(min));
-		llassert(less_than_max_mag(max));
 
-		//min, max are in volume space, convert to drawable render space
-
-		//get 8 corners of bounding box
-		LLVector4Logical mask[6];
-
-		for (U32 i = 0; i < 6; ++i)
+		// MAINT-8264 - stray vertices, especially in low LODs, cause bounding box errors.
+		if (face.mNumVertices < 3) 
 		{
-			mask[i].clear();
+			LL_DEBUGS("RiggedBox") << "skipping face " << f << ", bad num vertices " 
+									<< face.mNumVertices << " " << face.mNumIndices << " " << face.mWeights << LL_ENDL;
+		return FALSE;
 		}
 
-		mask[0].setElement<2>(); //001
-		mask[1].setElement<1>(); //010
-		mask[2].setElement<1>(); //011
-		mask[2].setElement<2>();
-		mask[3].setElement<0>(); //100
-		mask[4].setElement<0>(); //101
-		mask[4].setElement<2>();
-		mask[5].setElement<0>(); //110
-		mask[5].setElement<1>();
-		
-		LLVector4a v[8];
+		//VECTORIZE THIS
+		LLMatrix4a mat_vert = mat_vert_in;
+		LLVector4a new_extents[2];
 
-		v[6] = min;
-		v[7] = max;
+		llassert(less_than_max_mag(face.mExtents[0]));
+		llassert(less_than_max_mag(face.mExtents[1]));
 
-		for (U32 i = 0; i < 6; ++i)
-		{
-			v[i].setSelectWithMask(mask[i], min, max);
-		}
-
-		LLVector4a tv[8];
-
-		//transform bounding box into drawable space
-		for (U32 i = 0; i < 8; ++i)
-		{
-			mat_vert.affineTransform(v[i], tv[i]);
-		}
-	
-		//find bounding box
-		LLVector4a& newMin = mExtents[0];
-		LLVector4a& newMax = mExtents[1];
-
-		newMin = newMax = tv[0];
-
-		for (U32 i = 1; i < 8; ++i)
-		{
-			newMin.setMin(newMin, tv[i]);
-			newMax.setMax(newMax, tv[i]);
-		}
+		matMulBoundBox(mat_vert, face.mExtents, mExtents);
 
 		if (!mDrawablep->isActive())
 		{	// Shift position for region
 			LLVector4a offset;
 			offset.load3(mDrawablep->getRegion()->getOriginAgent().mV);
-			newMin.add(offset);
-			newMax.add(offset);
+			mExtents[0].add(offset);
+			mExtents[1].add(offset);
+			LL_DEBUGS("RiggedBox") << "updating extents for face " << f 
+									<< " not active, added offset " << offset << LL_ENDL;
 		}
 
 		LLVector4a t;
-		t.setAdd(newMin,newMax);
+		t.setAdd(mExtents[0],mExtents[1]);
 		t.mul(0.5f);
 
 		mCenterLocal.set(t.getF32ptr());
 
-		t.setSub(newMax,newMin);
+		t.setSub(mExtents[1],mExtents[0]);
 		mBoundingSphereRadius = t.getLength3().getF32()*0.5f;
 
 		updateCenterAgent();
@@ -2521,12 +2481,25 @@ LLViewerTexture* LLFace::getTexture(U32 ch) const
 
 void LLFace::setVertexBuffer(LLVertexBuffer* buffer)
 {
+	if (buffer)
+	{
+		LLSculptIDSize::instance().inc(mDrawablep, buffer->getSize() + buffer->getIndicesSize());
+	}
+
+	if (mVertexBuffer)
+	{
+		LLSculptIDSize::instance().dec(mDrawablep);
+	}
 	mVertexBuffer = buffer;
 	llassert(verify());
 }
 
 void LLFace::clearVertexBuffer()
 {
+	if (mVertexBuffer)
+	{
+		LLSculptIDSize::instance().dec(mDrawablep);
+	}
 	mVertexBuffer = NULL;
 }
 
diff --git a/indra/newview/llfloaterbvhpreview.cpp b/indra/newview/llfloaterbvhpreview.cpp
index c16c5739f..43ebdf14e 100644
--- a/indra/newview/llfloaterbvhpreview.cpp
+++ b/indra/newview/llfloaterbvhpreview.cpp
@@ -1308,17 +1308,10 @@ LLPreviewAnimation::LLPreviewAnimation(S32 width, S32 height) : LLViewerDynamicT
 	mCameraPitch = 0.f;
 	mCameraZoom = 1.f;
 
-	mDummyAvatar = (LLVOAvatar*)gObjectList.createObjectViewer(LL_PCODE_LEGACY_AVATAR, gAgent.getRegion());
-	mDummyAvatar->createDrawable(&gPipeline);
-	mDummyAvatar->mIsDummy = TRUE;
+	mDummyAvatar = (LLVOAvatar*)gObjectList.createObjectViewer(LL_PCODE_LEGACY_AVATAR, gAgent.getRegion(), LLViewerObject::CO_FLAG_UI_AVATAR);
 	mDummyAvatar->mSpecialRenderMode = 1;
-	mDummyAvatar->setPositionAgent(LLVector3::zero);
-	mDummyAvatar->slamPosition();
-	mDummyAvatar->updateJointLODs();
-	mDummyAvatar->updateGeometry(mDummyAvatar->mDrawable);
 	mDummyAvatar->startMotion(ANIM_AGENT_STAND, BASE_ANIM_TIME_OFFSET);
 	mDummyAvatar->hideSkirt();
-	//gPipeline.markVisible(mDummyAvatar->mDrawable, *LLViewerCamera::getInstance());
 
 	// stop extraneous animations
 	mDummyAvatar->stopMotion( ANIM_AGENT_HEAD_ROT, TRUE );
diff --git a/indra/newview/llfloaterimagepreview.cpp b/indra/newview/llfloaterimagepreview.cpp
index 283ecb157..d44333f04 100644
--- a/indra/newview/llfloaterimagepreview.cpp
+++ b/indra/newview/llfloaterimagepreview.cpp
@@ -621,15 +621,8 @@ LLImagePreviewAvatar::LLImagePreviewAvatar(S32 width, S32 height) : LLViewerDyna
 	mCameraPitch = 0.f;
 	mCameraZoom = 1.f;
 
-	mDummyAvatar = (LLVOAvatar*)gObjectList.createObjectViewer(LL_PCODE_LEGACY_AVATAR, gAgent.getRegion());
-	mDummyAvatar->createDrawable(&gPipeline);
-	mDummyAvatar->mIsDummy = TRUE;
+	mDummyAvatar = (LLVOAvatar*)gObjectList.createObjectViewer(LL_PCODE_LEGACY_AVATAR, gAgent.getRegion(), LLViewerObject::CO_FLAG_UI_AVATAR);
 	mDummyAvatar->mSpecialRenderMode = 2;
-	mDummyAvatar->setPositionAgent(LLVector3::zero);
-	mDummyAvatar->slamPosition();
-	mDummyAvatar->updateJointLODs();
-	mDummyAvatar->updateGeometry(mDummyAvatar->mDrawable);
-	// gPipeline.markVisible(mDummyAvatar->mDrawable, *LLViewerCamera::getInstance());
 
 	mTextureName = 0;
 }
diff --git a/indra/newview/llmeshrepository.cpp b/indra/newview/llmeshrepository.cpp
index b338d978e..e85e9e8f3 100644
--- a/indra/newview/llmeshrepository.cpp
+++ b/indra/newview/llmeshrepository.cpp
@@ -2918,7 +2918,7 @@ LLSD& LLMeshRepoThread::getMeshHeader(const LLUUID& mesh_id)
 	{
 		LLMutexLock lock(mHeaderMutex);
 		mesh_header_map::iterator iter = mMeshHeader.find(mesh_id);
-		if (iter != mMeshHeader.end())
+		if (iter != mMeshHeader.end() && mMeshHeaderSize[mesh_id] > 0)
 		{
 			return iter->second;
 		}
@@ -2944,10 +2944,11 @@ void LLMeshRepository::uploadModel(std::vector<LLModelInstance>& data, LLVector3
 
 S32 LLMeshRepository::getMeshSize(const LLUUID& mesh_id, S32 lod)
 {
-	if (mThread)
+	if (mThread && mesh_id.notNull() && LLPrimitive::NO_LOD != lod)
 	{
+		LLMutexLock lock(mThread->mHeaderMutex);
 		LLMeshRepoThread::mesh_header_map::iterator iter = mThread->mMeshHeader.find(mesh_id);
-		if (iter != mThread->mMeshHeader.end())
+		if (iter != mThread->mMeshHeader.end() && mThread->mMeshHeaderSize[mesh_id] > 0)
 		{
 			LLSD& header = iter->second;
 
@@ -3087,7 +3088,7 @@ F32 LLMeshRepository::getStreamingCost(LLSD& header, F32 radius, S32* bytes, S32
 		}
 	}
 
-	F32 max_area = 102932.f; //area of circle that encompasses region
+	F32 max_area = 102944.f; //area of circle that encompasses region (see MAINT-6559)
 	F32 min_area = 1.f;
 
 	F32 high_area = llmin(F_PI*dmid*dmid, max_area);
diff --git a/indra/newview/llsculptidsize.cpp b/indra/newview/llsculptidsize.cpp
new file mode 100644
index 000000000..9edd78bff
--- /dev/null
+++ b/indra/newview/llsculptidsize.cpp
@@ -0,0 +1,154 @@
+/**
+* @file llsculptidsize.cpp
+* @brief LLSculptIDSize class implementation
+*
+* $LicenseInfo:firstyear=2002&license=viewerlgpl$
+* Second Life Viewer Source Code
+* Copyright (C) 2010, Linden Research, Inc.
+*
+* This library is free software; you can redistribute it and/or
+* modify it under the terms of the GNU Lesser General Public
+* License as published by the Free Software Foundation;
+* version 2.1 of the License only.
+*
+* This library is distributed in the hope that it will be useful,
+* but WITHOUT ANY WARRANTY; without even the implied warranty of
+* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+* Lesser General Public License for more details.
+*
+* You should have received a copy of the GNU Lesser General Public
+* License along with this library; if not, write to the Free Software
+* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+*
+* Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+* $/LicenseInfo$
+*/
+
+#include "llviewerprecompiledheaders.h"
+#include "llsculptidsize.h"
+#include "llvovolume.h"
+#include "lldrawable.h"
+#include "llvoavatar.h"
+//boost
+#include "boost/make_shared.hpp"
+
+//...........
+
+extern LLControlGroup gSavedSettings;
+
+//...........
+
+typedef std::pair<LLSculptIDSize::container_BY_SCULPT_ID_view::iterator, LLSculptIDSize::container_BY_SCULPT_ID_view::iterator> pair_iter_iter_BY_SCULPT_ID_t;
+
+//...........
+
+void _nothing_to_do_func(int) { /*nothing todo here because of the size it's a shared member*/ }
+
+void LLSculptIDSize::inc(const LLDrawable *pdrawable, int sz)
+{
+	llassert(sz >= 0);
+
+	if (!pdrawable) return;
+	LLVOVolume* vvol = pdrawable->getVOVolume();
+	if (!vvol) return;
+	if (!vvol->isAttachment()) return;
+	if (!vvol->getAvatar()) return;
+	if (vvol->getAvatar()->isSelf()) return;
+	LLVolume *vol = vvol->getVolume();
+	if (!vol) return;
+
+	const LLUUID &sculptId = vol->getParams().getSculptID();
+	if (sculptId.isNull()) return;
+
+	unsigned int total_size = 0;
+
+	pair_iter_iter_BY_SCULPT_ID_t itLU = mSizeInfo.get<tag_BY_SCULPT_ID>().equal_range(sculptId);
+	if (itLU.first == itLU.second)
+	{ //register
+		llassert(mSizeInfo.get<tag_BY_DRAWABLE>().end() == mSizeInfo.get<tag_BY_DRAWABLE>().find(pdrawable));
+		mSizeInfo.get<tag_BY_DRAWABLE>().insert(Info(pdrawable, sz, boost::make_shared<SizeSum>(sz), sculptId));
+		total_size = sz;
+	}
+	else
+	{ //update + register
+		Info &nfo = const_cast<Info &>(*itLU.first);
+		//calc new size
+		total_size = nfo.getSizeSum() + sz;
+		nfo.mSharedSizeSum->mSizeSum = total_size;
+		nfo.mSize = sz;
+		//update size for all LLDrwable in range of sculptId
+		for (pair_iter_iter_BY_SCULPT_ID_t::first_type it = itLU.first; it != itLU.second; ++it)
+		{
+			mSizeInfo.get<tag_BY_SIZE>().modify_key(mSizeInfo.project<tag_BY_SIZE>(it), boost::bind(&_nothing_to_do_func, _1));
+		}
+
+		//trying insert the LLDrawable
+		mSizeInfo.get<tag_BY_DRAWABLE>().insert(Info(pdrawable, sz, nfo.mSharedSizeSum, sculptId));
+	}
+
+	static LLCachedControl<U32> render_auto_mute_byte_limit(gSavedSettings, "RenderAutoMuteByteLimit", 0U);
+
+	if (0 != render_auto_mute_byte_limit && total_size > render_auto_mute_byte_limit)
+	{
+		pair_iter_iter_BY_SCULPT_ID_t it_eqr = mSizeInfo.get<tag_BY_SCULPT_ID>().equal_range(sculptId);
+		for (; it_eqr.first != it_eqr.second; ++it_eqr.first)
+		{
+			const Info &i = *it_eqr.first;
+			LLVOVolume *pVVol = i.mDrawable->getVOVolume();
+			if (pVVol
+				&& !pVVol->isDead()
+				&& pVVol->isAttachment()
+				&& !pVVol->getAvatar()->isSelf()
+				&& LLVOVolume::NO_LOD != pVVol->getLOD()
+				)
+			{
+				addToUnloaded(sculptId);
+				//immediately
+				const_cast<LLDrawable*>(i.mDrawable)->unload();
+			}
+		}
+	}
+}
+
+void LLSculptIDSize::dec(const LLDrawable *pdrawable)
+{
+	container_BY_DRAWABLE_view::iterator it = mSizeInfo.get<tag_BY_DRAWABLE>().find(pdrawable);
+	if (mSizeInfo.get<tag_BY_DRAWABLE>().end() == it) return;
+
+	unsigned int size = it->getSizeSum() - it->getSize();
+
+	if (0 == size)
+	{
+		mSizeInfo.get<tag_BY_SCULPT_ID>().erase(it->getSculptId());
+	}
+	else
+	{
+		Info &nfo = const_cast<Info &>(*it);
+		nfo.mSize = 0;
+		pair_iter_iter_BY_SCULPT_ID_t itLU = mSizeInfo.get<tag_BY_SCULPT_ID>().equal_range(it->getSculptId());
+		it->mSharedSizeSum->mSizeSum = size;
+		for (pair_iter_iter_BY_SCULPT_ID_t::first_type it = itLU.first; it != itLU.second; ++it)
+		{
+			mSizeInfo.get<tag_BY_SIZE>().modify_key(mSizeInfo.project<tag_BY_SIZE>(it), boost::bind(&_nothing_to_do_func, _1));
+		}
+	}
+}
+
+void LLSculptIDSize::rem(const LLUUID &sculptId)
+{
+	mSizeInfo.get<tag_BY_SCULPT_ID>().erase(sculptId);
+}
+
+void LLSculptIDSize::resetSizeSum(const LLUUID &sculptId)
+{
+	const pair_iter_iter_BY_SCULPT_ID_t itLU = mSizeInfo.get<tag_BY_SCULPT_ID>().equal_range(sculptId);
+
+	if (itLU.first != itLU.second) {
+		itLU.first->mSharedSizeSum->mSizeSum = 0;
+	}
+
+	for (pair_iter_iter_BY_SCULPT_ID_t::first_type it = itLU.first, itE = itLU.second; it != itE; ++it)
+	{
+		mSizeInfo.get<tag_BY_SIZE>().modify_key(mSizeInfo.project<tag_BY_SIZE>(it), boost::bind(&_nothing_to_do_func, _1));
+	}
+}
diff --git a/indra/newview/llsculptidsize.h b/indra/newview/llsculptidsize.h
new file mode 100644
index 000000000..87ee417b8
--- /dev/null
+++ b/indra/newview/llsculptidsize.h
@@ -0,0 +1,134 @@
+/**
+* @file llsculptidsize.h
+* @brief LLSculptIDSize class definition
+*
+* $LicenseInfo:firstyear=2009&license=viewerlgpl$
+* Second Life Viewer Source Code
+* Copyright (C) 2010, Linden Research, Inc.
+*
+* This library is free software; you can redistribute it and/or
+* modify it under the terms of the GNU Lesser General Public
+* License as published by the Free Software Foundation;
+* version 2.1 of the License only.
+*
+* This library is distributed in the hope that it will be useful,
+* but WITHOUT ANY WARRANTY; without even the implied warranty of
+* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+* Lesser General Public License for more details.
+*
+* You should have received a copy of the GNU Lesser General Public
+* License along with this library; if not, write to the Free Software
+* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+*
+* Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+* $/LicenseInfo$
+*/
+
+#ifndef LL_LLSCULPTIDSIZE_H
+#define LL_LLSCULPTIDSIZE_H
+
+#include "lluuid.h"
+
+//std
+#include <set>
+//boost
+#include "boost/multi_index_container.hpp"
+#include "boost/multi_index/ordered_index.hpp"
+#include "boost/multi_index/mem_fun.hpp"
+
+class LLDrawable;
+
+
+class LLSculptIDSize
+{
+public:
+	struct SizeSum
+	{
+		SizeSum(int size) 
+			: mSizeSum(size)
+		{}
+		unsigned int mSizeSum;
+	};
+
+	struct Info
+	{
+		typedef boost::shared_ptr<SizeSum> PtrSizeSum;
+
+		Info(const LLDrawable *drawable, int size, PtrSizeSum sizeInfo, LLUUID sculptId)
+			: mDrawable(drawable)
+			, mSize(size)
+			, mSharedSizeSum(sizeInfo)
+			, mSculptId(sculptId)
+		{}
+
+		const LLDrawable *mDrawable;
+		unsigned int mSize;
+		PtrSizeSum	mSharedSizeSum;
+		LLUUID mSculptId;
+
+		inline const LLDrawable*	getPtrLLDrawable() const { return mDrawable; }
+		inline unsigned int			getSize() const { return mSize; }
+		inline unsigned int			getSizeSum() const { return mSharedSizeSum->mSizeSum; }
+		inline LLUUID				getSculptId() const { return mSculptId; }
+		PtrSizeSum					getSizeInfo() { return mSharedSizeSum; }
+	};
+
+public:
+	//tags
+	struct tag_BY_DRAWABLE {};
+	struct tag_BY_SCULPT_ID {};
+	struct tag_BY_SIZE {};
+
+	//container
+	typedef boost::multi_index_container <
+		Info,
+		boost::multi_index::indexed_by <
+		boost::multi_index::ordered_unique< boost::multi_index::tag<tag_BY_DRAWABLE>
+		, boost::multi_index::const_mem_fun<Info, const LLDrawable*, &Info::getPtrLLDrawable>
+		>
+		, boost::multi_index::ordered_non_unique<boost::multi_index::tag<tag_BY_SCULPT_ID>
+		, boost::multi_index::const_mem_fun<Info, LLUUID, &Info::getSculptId>
+		>
+		, boost::multi_index::ordered_non_unique < boost::multi_index::tag<tag_BY_SIZE>
+		, boost::multi_index::const_mem_fun < Info, unsigned int, &Info::getSizeSum >
+		>
+		>
+	> container;
+
+	//views
+	typedef container::index<tag_BY_DRAWABLE>::type			container_BY_DRAWABLE_view;
+	typedef container::index<tag_BY_SCULPT_ID>::type		container_BY_SCULPT_ID_view;
+	typedef container::index<tag_BY_SIZE>::type				container_BY_SIZE_view;
+
+private:
+	LLSculptIDSize()
+	{}
+
+public:
+	static LLSculptIDSize & instance() 
+	{
+		static LLSculptIDSize inst;
+		return inst;
+	}
+
+public:
+	void inc(const LLDrawable *pdrawable, int sz);
+	void dec(const LLDrawable *pdrawable);
+	void rem(const LLUUID &sculptId);
+
+	inline void addToUnloaded(const LLUUID &sculptId) { mMarkAsUnloaded.insert(sculptId); }
+	inline void remFromUnloaded(const LLUUID &sculptId) { mMarkAsUnloaded.erase(sculptId); }
+	inline bool isUnloaded(const LLUUID &sculptId) const { return mMarkAsUnloaded.end() != mMarkAsUnloaded.find(sculptId); }
+	inline void clearUnloaded() { mMarkAsUnloaded.clear(); }
+	
+	void resetSizeSum(const LLUUID &sculptId);
+
+	inline const container & getSizeInfo() const { return mSizeInfo; }
+
+private:
+	container mSizeInfo;
+	typedef std::set<LLUUID> std_LLUUID;
+	std_LLUUID mMarkAsUnloaded;
+};
+
+#endif
diff --git a/indra/newview/llselectmgr.cpp b/indra/newview/llselectmgr.cpp
index 99c4a5a1c..7ec273c76 100644
--- a/indra/newview/llselectmgr.cpp
+++ b/indra/newview/llselectmgr.cpp
@@ -369,7 +369,7 @@ LLObjectSelectionHandle LLSelectMgr::selectObjectOnly(LLViewerObject* object, S3
 //-----------------------------------------------------------------------------
 // Select the object, parents and children.
 //-----------------------------------------------------------------------------
-LLObjectSelectionHandle LLSelectMgr::selectObjectAndFamily(LLViewerObject* obj, BOOL add_to_end)
+LLObjectSelectionHandle LLSelectMgr::selectObjectAndFamily(LLViewerObject* obj, BOOL add_to_end, BOOL ignore_select_owned)
 {
 	llassert( obj );
 
@@ -386,7 +386,7 @@ LLObjectSelectionHandle LLSelectMgr::selectObjectAndFamily(LLViewerObject* obj,
 		return NULL;
 	}
 
-	if (!canSelectObject(obj))
+	if (!canSelectObject(obj,ignore_select_owned))
 	{
 		//make_ui_sound("UISndInvalidOp");
 		return NULL;
@@ -1211,7 +1211,7 @@ void LLSelectMgr::setGridMode(EGridMode mode)
 	updateSelectionCenter();
 }
 
-void LLSelectMgr::getGrid(LLVector3& origin, LLQuaternion &rotation, LLVector3 &scale)
+void LLSelectMgr::getGrid(LLVector3& origin, LLQuaternion &rotation, LLVector3 &scale, bool for_snap_guides)
 {
 	mGridObjects.cleanupNodes();
 	
@@ -1236,7 +1236,15 @@ void LLSelectMgr::getGrid(LLVector3& origin, LLQuaternion &rotation, LLVector3 &
 	}
 	else if (mGridMode == GRID_MODE_REF_OBJECT && first_grid_object && first_grid_object->mDrawable.notNull())
 	{
-		mGridRotation = first_grid_object->getRenderRotation();
+		LLSelectNode *node = mSelectedObjects->findNode(first_grid_object);
+		if (!for_snap_guides && node)
+		{
+			mGridRotation = node->mSavedRotation;
+		}
+		else
+		{
+			mGridRotation = first_grid_object->getRenderRotation();
+		}
 
 		LLVector4a min_extents(F32_MAX);
 		LLVector4a max_extents(-F32_MAX);
@@ -6823,7 +6831,7 @@ void LLSelectMgr::validateSelection()
 	getSelection()->applyToObjects(&func);	
 }
 
-BOOL LLSelectMgr::canSelectObject(LLViewerObject* object)
+BOOL LLSelectMgr::canSelectObject(LLViewerObject* object, BOOL ignore_select_owned)
 {
 	// Never select dead objects
 	if (!object || object->isDead())
@@ -6836,11 +6844,14 @@ BOOL LLSelectMgr::canSelectObject(LLViewerObject* object)
 		return TRUE;
 	}
 
-	if ((gSavedSettings.getBOOL("SelectOwnedOnly") && !object->permYouOwner()) ||
-		(gSavedSettings.getBOOL("SelectMovableOnly") && (!object->permMove() ||  object->isPermanentEnforced())))
+	if(!ignore_select_owned)
 	{
-		// only select my own objects
-		return FALSE;
+		if ((gSavedSettings.getBOOL("SelectOwnedOnly") && !object->permYouOwner()) ||
+				(gSavedSettings.getBOOL("SelectMovableOnly") && (!object->permMove() ||  object->isPermanentEnforced())))
+		{
+			// only select my own objects
+			return FALSE;
+		}
 	}
 
 	// Can't select orphans
@@ -7039,7 +7050,7 @@ F32 LLObjectSelection::getSelectedLinksetCost()
 		LLSelectNode* node = *iter;
 		LLViewerObject* object = node->getObject();
 		
-		if (object)
+		if (object && !object->isAttachment())
 		{
 			LLViewerObject* root = static_cast<LLViewerObject*>(object->getRoot());
 			if (root)
diff --git a/indra/newview/llselectmgr.h b/indra/newview/llselectmgr.h
index 145c25005..416e79425 100644
--- a/indra/newview/llselectmgr.h
+++ b/indra/newview/llselectmgr.h
@@ -419,7 +419,7 @@ public:
 	//
 	// *NOTE: You must hold on to the object selection handle, otherwise
 	// the objects will be automatically deselected in 1 frame.
-	LLObjectSelectionHandle selectObjectAndFamily(LLViewerObject* object, BOOL add_to_end = FALSE);
+	LLObjectSelectionHandle selectObjectAndFamily(LLViewerObject* object, BOOL add_to_end = FALSE, BOOL ignore_select_owned = FALSE);
 
 	// For when you want just a child object.
 	LLObjectSelectionHandle selectObjectOnly(LLViewerObject* object, S32 face = SELECT_ALL_TES);
@@ -491,7 +491,7 @@ public:
 	void			clearGridObjects();
 	void			setGridMode(EGridMode mode);
 	EGridMode		getGridMode() { return mGridMode; }
-	void			getGrid(LLVector3& origin, LLQuaternion& rotation, LLVector3 &scale);
+	void			getGrid(LLVector3& origin, LLQuaternion& rotation, LLVector3 &scale, bool for_snap_guides = false);
 
 	BOOL getTEMode()		{ return mTEMode; }
 	void setTEMode(BOOL b)	{ mTEMode = b; }
@@ -573,7 +573,7 @@ public:
 	void validateSelection();
 
 	// returns TRUE if it is possible to select this object
-	BOOL canSelectObject(LLViewerObject* object);
+	BOOL canSelectObject(LLViewerObject* object, BOOL ignore_select_owned = FALSE);
 
 	// Returns TRUE if the viewer has information on all selected objects
 	BOOL selectGetAllRootsValid();
diff --git a/indra/newview/llskinningutil.cpp b/indra/newview/llskinningutil.cpp
index 842d5a137..e70ba59c7 100644
--- a/indra/newview/llskinningutil.cpp
+++ b/indra/newview/llskinningutil.cpp
@@ -78,22 +78,24 @@ void LLSkinningUtil::initSkinningMatrixPalette(
     LLVOAvatar *avatar,
     bool relative_to_avatar)
 {
+	LLVector4a pos = LLVector4a::getZero();
+	if (relative_to_avatar)
+	{
+		pos.load3(avatar->getPosition().mV);
+		pos.mul(-1.f);
+	}
+
     initJointNums(const_cast<LLMeshSkinInfo*>(skin), avatar);
     for (U32 j = 0; j < (U32)count; ++j)
     {
         LLJoint *joint = avatar->getJoint(skin->mJointNums[j]);
         if (joint)
         {
-            LLMatrix4a bind;
-            bind.loadu((F32*)skin->mInvBindMatrix[j].mMatrix);
-            if (relative_to_avatar)
-            {
-            	LLMatrix4a trans = joint->getWorldMatrix();
-            	trans.translate_affine(avatar->getPosition() * -1.f);
-            	mat[j].setMul(trans, bind);
-            }
-            else
-                mat[j].setMul(joint->getWorldMatrix(), bind);
+			LLMatrix4a bind;
+			bind.loadu((F32*)skin->mInvBindMatrix[j].mMatrix);
+			LLMatrix4a world = joint->getWorldMatrix();
+			world.getRow<3>().add(pos); // Append pos into world matrix.
+			mat[j].setMul(world, bind);	
         }
         else
         {
diff --git a/indra/newview/llspatialpartition.cpp b/indra/newview/llspatialpartition.cpp
index b10192ca9..3cdd9d9ef 100644
--- a/indra/newview/llspatialpartition.cpp
+++ b/indra/newview/llspatialpartition.cpp
@@ -76,6 +76,8 @@ BOOL LLSpatialGroup::sNoDelete = FALSE;
 static F32 sLastMaxTexPriority = 1.f;
 static F32 sCurMaxTexPriority = 1.f;
 
+BOOL LLSpatialPartition::sTeleportRequested = FALSE;
+
 //BOOL LLSpatialPartition::sFreezeState = FALSE;
 
 //static counter for frame to switch LOD on
@@ -1309,7 +1311,7 @@ void LLSpatialPartition::restoreGL()
 
 void LLSpatialPartition::resetVertexBuffers()
 {
-	LLOctreeDirty dirty;
+	LLOctreeDirty dirty(sTeleportRequested);
 	dirty.traverse(mOctree);
 }
 
diff --git a/indra/newview/llspatialpartition.h b/indra/newview/llspatialpartition.h
index cd150d017..64821192e 100644
--- a/indra/newview/llspatialpartition.h
+++ b/indra/newview/llspatialpartition.h
@@ -438,6 +438,8 @@ public:
 	U32 mVertexDataMask;
 	F32 mSlopRatio; //percentage distance must change before drawables receive LOD update (default is 0.25);
 	BOOL mDepthMask; //if TRUE, objects in this partition will be written to depth during alpha rendering
+
+	static BOOL sTeleportRequested; //started to issue a teleport request
 };
 
 // class for creating bridges between spatial partitions
diff --git a/indra/newview/lltextureview.cpp b/indra/newview/lltextureview.cpp
index 19d74fcba..47e473643 100644
--- a/indra/newview/lltextureview.cpp
+++ b/indra/newview/lltextureview.cpp
@@ -182,7 +182,7 @@ void LLTextureBar::draw()
 	{
 		color = LLColor4::green4;
 	}
-	else if (mImagep->getBoostLevel() > LLGLTexture::BOOST_NONE)
+	else if (mImagep->getBoostLevel() > LLGLTexture::BOOST_ALM)
 	{
 		color = LLColor4::magenta;
 	}
diff --git a/indra/newview/llviewercontrol.cpp b/indra/newview/llviewercontrol.cpp
index c13e2d9c1..153c3d9d5 100644
--- a/indra/newview/llviewercontrol.cpp
+++ b/indra/newview/llviewercontrol.cpp
@@ -138,6 +138,16 @@ bool handleStateMachineMaxTimeChanged(const LLSD& newvalue)
 	return true;
 }
 
+extern bool sInwlfPanelUpdate;
+static bool handleAvatarHoverOffsetChanged(const LLSD& newvalue)
+{
+	if (!sInwlfPanelUpdate && isAgentAvatarValid())
+	{
+		gAgentAvatarp->setHoverIfRegionEnabled();
+	}
+	return true;
+}
+
 static bool handleSetShaderChanged(const LLSD& newvalue)
 {
 	// changing shader level may invalidate existing cached bump maps, as the shader type determines the format of the bump map it expects - clear and repopulate the bump cache
@@ -836,6 +846,7 @@ void settings_setup_listeners()
 	gSavedSettings.getControl("RenderTransparentWater")->getSignal()->connect(boost::bind(&handleRenderTransparentWaterChanged, _2));
 	gSavedSettings.getControl("AlchemyWLCloudTexture")->getSignal()->connect(boost::bind(&handleWindlightCloudChanged, _2));
 	
+	gSavedPerAccountSettings.getControl("AvatarHoverOffsetZ")->getCommitSignal()->connect(boost::bind(&handleAvatarHoverOffsetChanged, _2));
 	gSavedSettings.getControl("AscentAvatarXModifier")->getSignal()->connect(boost::bind(&handleAscentAvatarModifier, _2));
 	gSavedSettings.getControl("AscentAvatarYModifier")->getSignal()->connect(boost::bind(&handleAscentAvatarModifier, _2));
 	gSavedSettings.getControl("AscentAvatarZModifier")->getSignal()->connect(boost::bind(&handleAscentAvatarModifier, _2));
diff --git a/indra/newview/llviewerobject.cpp b/indra/newview/llviewerobject.cpp
index 9892b7987..f4aad9bf0 100644
--- a/indra/newview/llviewerobject.cpp
+++ b/indra/newview/llviewerobject.cpp
@@ -68,6 +68,7 @@
 #include "llselectmgr.h"
 #include "llrendersphere.h"
 #include "lltooldraganddrop.h"
+#include "lluiavatar.h"
 #include "llviewercamera.h"
 #include "llviewertexturelist.h"
 #include "llviewerinventory.h"
@@ -98,7 +99,7 @@
 #include "llvowlsky.h"
 #include "llmanip.h"
 #include "llmediaentry.h"
-
+#include "llmeshrepository.h"
 // [RLVa:KB]
 #include "rlvhandler.h"
 #include "rlvlocks.h"
@@ -137,11 +138,11 @@ const S32 MAX_OBJECT_BINARY_DATA_SIZE = 60 + 16;
 static LLTrace::BlockTimerStatHandle FTM_CREATE_OBJECT("Create Object");
 
 // static
-LLViewerObject *LLViewerObject::createObject(const LLUUID &id, const LLPCode pcode, LLViewerRegion *regionp)
+LLViewerObject *LLViewerObject::createObject(const LLUUID &id, const LLPCode pcode, LLViewerRegion *regionp, S32 flags)
 {
 	LLViewerObject *res = NULL;
 	LL_RECORD_BLOCK_TIME(FTM_CREATE_OBJECT);
-	
+
 	switch (pcode)
 	{
 	case LL_PCODE_VOLUME:
@@ -156,7 +157,7 @@ LLViewerObject *LLViewerObject::createObject(const LLUUID &id, const LLPCode pco
 				gAgentAvatarp->initInstance();
 				gAgentWearables.setAvatarObject(gAgentAvatarp);
 			}
-			else 
+			else
 			{
 				if (isAgentAvatarValid())
 				{
@@ -165,9 +166,15 @@ LLViewerObject *LLViewerObject::createObject(const LLUUID &id, const LLPCode pco
 			}
 			res = gAgentAvatarp;
 		}
+		else if (flags & CO_FLAG_UI_AVATAR)
+		{
+			LLUIAvatar *ui_avatar = new LLUIAvatar(id, pcode, regionp);
+			ui_avatar->initInstance();
+			res = ui_avatar;
+		}
 		else
 		{
-			LLVOAvatar *avatar = new LLVOAvatar(id, pcode, regionp); 
+			LLVOAvatar *avatar = new LLVOAvatar(id, pcode, regionp);
 			avatar->initInstance();
 			res = avatar;
 		}
@@ -2780,6 +2787,9 @@ struct LLFilenameAndTask
 {
 	LLUUID mTaskID;
 	std::string mFilename;
+
+	// for sequencing in case of multiple updates
+	S16 mSerial;
 #ifdef _DEBUG
 	static S32 sCount;
 	LLFilenameAndTask()
@@ -2815,14 +2825,22 @@ void LLViewerObject::processTaskInv(LLMessageSystem* msg, void** user_data)
 		return;
 	}
 
-	msg->getS16Fast(_PREHASH_InventoryData, _PREHASH_Serial, object->mInventorySerialNum);
 	LLFilenameAndTask* ft = new LLFilenameAndTask;
 	ft->mTaskID = task_id;
+	// we can receive multiple task updates simultaneously, make sure we will not rewrite newer with older update
+	msg->getS16Fast(_PREHASH_InventoryData, _PREHASH_Serial, ft->mSerial);
+
+	if (ft->mSerial < object->mInventorySerialNum)
+	{
+		// viewer did some changes to inventory that were not saved yet.
+		LL_DEBUGS() << "Task inventory serial might be out of sync, server serial: " << ft->mSerial << " client serial: " << object->mInventorySerialNum << LL_ENDL;
+		object->mInventorySerialNum = ft->mSerial;
+	}
 
 	std::string unclean_filename;
 	msg->getStringFast(_PREHASH_InventoryData, _PREHASH_Filename, unclean_filename);
 	ft->mFilename = LLDir::getScrubbedFileName(unclean_filename);
-	
+
 	if(ft->mFilename.empty())
 	{
 		LL_DEBUGS() << "Task has no inventory" << LL_ENDL;
@@ -2871,9 +2889,13 @@ void LLViewerObject::processTaskInvFile(void** user_data, S32 error_code, LLExtS
 {
 	LLFilenameAndTask* ft = (LLFilenameAndTask*)user_data;
 	LLViewerObject* object = NULL;
-	if(ft && (0 == error_code) &&
-	   (object = gObjectList.findObject(ft->mTaskID)))
+
+	if (ft
+		&& (0 == error_code)
+		&& (object = gObjectList.findObject(ft->mTaskID))
+		&& ft->mSerial >= object->mInventorySerialNum)
 	{
+		object->mInventorySerialNum = ft->mSerial;
 		if (object->loadTaskInvFile(ft->mFilename))
 		{
 
@@ -4264,14 +4286,14 @@ void LLViewerObject::setTE(const U8 te, const LLTextureEntry &texture_entry)
 
 	const LLUUID& image_id = getTE(te)->getID();
 		mTEImages[te] = LLViewerTextureManager::getFetchedTexture(image_id, FTT_DEFAULT, TRUE, LLGLTexture::BOOST_NONE, LLViewerTexture::LOD_TEXTURE);
-	
+
 	if (getTE(te)->getMaterialParams().notNull())
 	{
 		const LLUUID& norm_id = getTE(te)->getMaterialParams()->getNormalID();
-		mTENormalMaps[te] = LLViewerTextureManager::getFetchedTexture(norm_id, FTT_DEFAULT, TRUE, LLGLTexture::BOOST_NONE, LLViewerTexture::LOD_TEXTURE);
-		
+		mTENormalMaps[te] = LLViewerTextureManager::getFetchedTexture(norm_id, FTT_DEFAULT, TRUE, LLGLTexture::BOOST_ALM, LLViewerTexture::LOD_TEXTURE);
+
 		const LLUUID& spec_id = getTE(te)->getMaterialParams()->getSpecularID();
-		mTESpecularMaps[te] = LLViewerTextureManager::getFetchedTexture(spec_id, FTT_DEFAULT, TRUE, LLGLTexture::BOOST_NONE, LLViewerTexture::LOD_TEXTURE);
+		mTESpecularMaps[te] = LLViewerTextureManager::getFetchedTexture(spec_id, FTT_DEFAULT, TRUE, LLGLTexture::BOOST_ALM, LLViewerTexture::LOD_TEXTURE);
 	}
 }
 
@@ -4393,14 +4415,14 @@ S32 LLViewerObject::setTETexture(const U8 te, const LLUUID& uuid)
 S32 LLViewerObject::setTENormalMap(const U8 te, const LLUUID& uuid)
 {
 	LLViewerFetchedTexture *image = (uuid == LLUUID::null) ? NULL : LLViewerTextureManager::getFetchedTexture(
-		uuid, FTT_DEFAULT, TRUE, LLGLTexture::BOOST_NONE, LLViewerTexture::LOD_TEXTURE, 0, 0, LLHost::invalid);
+		uuid, FTT_DEFAULT, TRUE, LLGLTexture::BOOST_ALM, LLViewerTexture::LOD_TEXTURE, 0, 0, LLHost::invalid);
 	return setTENormalMapCore(te, image);
 }
 
 S32 LLViewerObject::setTESpecularMap(const U8 te, const LLUUID& uuid)
 {
 	LLViewerFetchedTexture *image = (uuid == LLUUID::null) ? NULL : LLViewerTextureManager::getFetchedTexture(
-		uuid, FTT_DEFAULT, TRUE, LLGLTexture::BOOST_NONE, LLViewerTexture::LOD_TEXTURE, 0, 0, LLHost::invalid);
+		uuid, FTT_DEFAULT, TRUE, LLGLTexture::BOOST_ALM, LLViewerTexture::LOD_TEXTURE, 0, 0, LLHost::invalid);
 	return setTESpecularMapCore(te, image);
 }
 
@@ -5759,6 +5781,15 @@ void LLViewerObject::markForUpdate(BOOL priority)
 	}
 }
 
+
+void LLViewerObject::markForUnload(BOOL priority)
+{
+	if (mDrawable.notNull())
+	{
+		gPipeline.markRebuild(mDrawable, LLDrawable::FOR_UNLOAD, priority);
+	}
+}
+
 bool LLViewerObject::isPermanentEnforced() const
 {
 	return flagObjectPermanent() && (mRegionp != gAgent.getRegion()) && !gAgent.isGodlike();
@@ -6246,7 +6277,7 @@ public:
 	{
 		LLSD object_data = input["body"]["ObjectData"];
 		S32 num_entries = object_data.size();
-		
+
 		for ( S32 i = 0; i < num_entries; i++ )
 		{
 			LLSD& curr_object_data = object_data[i];
@@ -6279,9 +6310,9 @@ public:
 				node->getObject()->setPhysicsFriction(friction);
 				node->getObject()->setPhysicsDensity(density);
 				node->getObject()->setPhysicsRestitution(restitution);
-			}	
+			}
 		}
-		
+
 		dialog_refresh_all();
 	};
 };
diff --git a/indra/newview/llviewerobject.h b/indra/newview/llviewerobject.h
index d031f3de4..9f6d0a817 100644
--- a/indra/newview/llviewerobject.h
+++ b/indra/newview/llviewerobject.h
@@ -428,6 +428,7 @@ public:
 
     void recursiveMarkForUpdate(BOOL priority);
 	virtual void markForUpdate(BOOL priority);
+	void markForUnload(BOOL priority);
 	void updateVolume(const LLVolumeParams& volume_params);
 	virtual	void updateSpatialExtents(LLVector4a& min, LLVector4a& max);
 	virtual F32 getBinRadius();
@@ -696,6 +697,10 @@ public:
 public:
 
     virtual bool isAnimatedObject() const;
+
+    // Flags for createObject
+    static const S32 CO_FLAG_UI_AVATAR = 1 << 1;
+
 protected:
 	// delete an item in the inventory, but don't tell the
 	// server. This is used internally by remove, update, and
@@ -706,8 +711,7 @@ protected:
 	// updateInventory.
 	void doUpdateInventory(LLPointer<LLViewerInventoryItem>& item, U8 key, bool is_new);
 
-
-	static LLViewerObject *createObject(const LLUUID &id, LLPCode pcode, LLViewerRegion *regionp);
+	static LLViewerObject *createObject(const LLUUID &id, LLPCode pcode, LLViewerRegion *regionp, S32 flags = 0);
 
 	BOOL setData(const U8 *datap, const U32 data_size);
 
diff --git a/indra/newview/llviewerobjectlist.cpp b/indra/newview/llviewerobjectlist.cpp
index f84bb5ea6..c99724e26 100644
--- a/indra/newview/llviewerobjectlist.cpp
+++ b/indra/newview/llviewerobjectlist.cpp
@@ -1990,12 +1990,12 @@ void LLViewerObjectList::resetObjectBeacons()
 	mDebugBeacons.clear();
 }
 
-LLViewerObject *LLViewerObjectList::createObjectViewer(const LLPCode pcode, LLViewerRegion *regionp)
+LLViewerObject *LLViewerObjectList::createObjectViewer(const LLPCode pcode, LLViewerRegion *regionp, S32 flags)
 {
 	LLUUID fullid;
 	fullid.generate();
 
-	LLViewerObject *objectp = LLViewerObject::createObject(fullid, pcode, regionp);
+	LLViewerObject *objectp = LLViewerObject::createObject(fullid, pcode, regionp, flags);
 	if (!objectp)
 	{
 // 		LL_WARNS() << "Couldn't create object of type " << LLPrimitive::pCodeToString(pcode) << LL_ENDL;
diff --git a/indra/newview/llviewerobjectlist.h b/indra/newview/llviewerobjectlist.h
index bb6480f81..3f96c11bf 100644
--- a/indra/newview/llviewerobjectlist.h
+++ b/indra/newview/llviewerobjectlist.h
@@ -74,7 +74,7 @@ public:
 	
 	inline LLViewerObject *findObject(const LLUUID &id) const;
 	inline LLVOAvatar *findAvatar(const LLUUID &id) const;
-	LLViewerObject *createObjectViewer(const LLPCode pcode, LLViewerRegion *regionp); // Create a viewer-side object
+	LLViewerObject *createObjectViewer(const LLPCode pcode, LLViewerRegion *regionp, S32 flags = 0); // Create a viewer-side object
 	LLViewerObject *createObject(const LLPCode pcode, LLViewerRegion *regionp,
 								 const LLUUID &uuid, const U32 local_id, const LLHost &sender);
 
diff --git a/indra/newview/llviewertexture.cpp b/indra/newview/llviewertexture.cpp
index 0df6af561..73827e7d6 100644
--- a/indra/newview/llviewertexture.cpp
+++ b/indra/newview/llviewertexture.cpp
@@ -99,6 +99,7 @@ S32 LLViewerTexture::sMaxSculptRez = 128; //max sculpt image size
 const S32 MAX_CACHED_RAW_IMAGE_AREA = 64 * 64;
 const S32 MAX_CACHED_RAW_SCULPT_IMAGE_AREA = LLViewerTexture::sMaxSculptRez * LLViewerTexture::sMaxSculptRez;
 const S32 MAX_CACHED_RAW_TERRAIN_IMAGE_AREA = 128 * 128;
+const S32 DEFAULT_ICON_DIMENTIONS = 32;
 S32 LLViewerTexture::sMinLargeImageSize = 65536; //256 * 256.
 S32 LLViewerTexture::sMaxSmallImageSize = MAX_CACHED_RAW_IMAGE_AREA;
 BOOL LLViewerTexture::sFreezeImageScalingDown = FALSE;
@@ -112,6 +113,8 @@ const F32 desired_discard_bias_min = -2.0f; // -max number of levels to improve
 const F32 desired_discard_bias_max = (F32)MAX_DISCARD_LEVEL; // max number of levels to reduce image quality by
 const F64 log_2 = log(2.0);
 
+const U32 DESIRED_NORMAL_TEXTURE_SIZE = (U32)LLViewerFetchedTexture::MAX_IMAGE_SIZE_DEFAULT;
+
 //----------------------------------------------------------------------------------------------
 //namespace: LLViewerTextureAccess
 //----------------------------------------------------------------------------------------------
@@ -459,7 +462,7 @@ bool LLViewerTexture::isMemoryForTextureLow()
 
 	LL_RECORD_BLOCK_TIME(FTM_TEXTURE_MEMORY_CHECK);
 
-	static const S32Megabytes MIN_FREE_TEXTURE_MEMORY(5); //MB
+	static const S32Megabytes MIN_FREE_TEXTURE_MEMORY(20); //MB
 	static const S32Megabytes MIN_FREE_MAIN_MEMORY(100); //MB	
 
 	bool low_mem = false;
@@ -690,9 +693,11 @@ void LLViewerTexture::setBoostLevel(S32 level)
 	{
 		mBoostLevel = level;
 		if(mBoostLevel != LLViewerTexture::BOOST_NONE && 
-			mBoostLevel != LLViewerTexture::BOOST_SELECTED)
+			mBoostLevel != LLViewerTexture::BOOST_ALM && 
+			mBoostLevel != LLViewerTexture::BOOST_SELECTED && 
+			mBoostLevel != LLViewerTexture::BOOST_ICON)
 		{
-			setNoDelete();		
+			setNoDelete();
 		}
 	}
 
@@ -1524,15 +1529,31 @@ void LLViewerFetchedTexture::processTextureStats()
 		{
 			mDesiredDiscardLevel = 0;
 		}
+		else if (!LLPipeline::sRenderDeferred && mBoostLevel == LLGLTexture::BOOST_ALM)
+		{
+			mDesiredDiscardLevel = MAX_DISCARD_LEVEL + 1;
+		}
+		else if (mDontDiscard && mBoostLevel == LLGLTexture::BOOST_ICON)
+		{
+			if (mFullWidth > MAX_IMAGE_SIZE_DEFAULT || mFullHeight > MAX_IMAGE_SIZE_DEFAULT)
+			{
+				mDesiredDiscardLevel = 1; // MAX_IMAGE_SIZE_DEFAULT = 1024 and max size ever is 2048
+			}
+			else
+			{
+				mDesiredDiscardLevel = 0;
+			}
+		}
 		else if(!mFullWidth || !mFullHeight)
 		{
 			mDesiredDiscardLevel = 	llmin(getMaxDiscardLevel(), (S32)mLoadedCallbackDesiredDiscardLevel);
 		}
 		else
 		{	
+			S32 desired_size = MAX_IMAGE_SIZE_DEFAULT; // MAX_IMAGE_SIZE_DEFAULT = 1024 and max size ever is 2048
 			if(!mKnownDrawWidth || !mKnownDrawHeight || mFullWidth <= mKnownDrawWidth || mFullHeight <= mKnownDrawHeight)
 			{
-				if (mFullWidth > MAX_IMAGE_SIZE_DEFAULT || mFullHeight > MAX_IMAGE_SIZE_DEFAULT)
+				if (mFullWidth > desired_size || mFullHeight > desired_size)
 				{
 					mDesiredDiscardLevel = 1; // MAX_IMAGE_SIZE_DEFAULT = 1024 and max size ever is 2048
 				}
@@ -1782,10 +1803,11 @@ void LLViewerFetchedTexture::updateVirtualSize()
 				{
 					if(drawable->isRecentlyVisible())
 					{
-						if (getBoostLevel() == LLViewerTexture::BOOST_NONE && 
-							drawable->getVObj() && drawable->getVObj()->isSelected())
-						{
-							setBoostLevel(LLViewerTexture::BOOST_SELECTED);
+					if ((getBoostLevel() == LLViewerTexture::BOOST_NONE || getBoostLevel() == LLViewerTexture::BOOST_ALM)
+						&& drawable->getVObj()
+						&& drawable->getVObj()->isSelected())
+					{
+						setBoostLevel(LLViewerTexture::BOOST_SELECTED);
 						}
 						addTextureStats(facep->getVirtualSize());
 						setAdditionalDecodePriority(facep->getImportanceToCamera());
@@ -1953,6 +1975,17 @@ bool LLViewerFetchedTexture::updateFetch()
 					addToCreateTexture();
 				}
 
+				if (mBoostLevel == LLGLTexture::BOOST_ICON)
+				{
+					S32 expected_width = mKnownDrawWidth > 0 ? mKnownDrawWidth : DEFAULT_ICON_DIMENTIONS;
+					S32 expected_height = mKnownDrawHeight > 0 ? mKnownDrawHeight : DEFAULT_ICON_DIMENTIONS;
+					if (mRawImage && (mRawImage->getWidth() > expected_width || mRawImage->getHeight() > expected_height))
+					{
+						// scale oversized icon, no need to give more work to gl
+						mRawImage->scale(expected_width, expected_height);
+					}
+				}
+
 				return TRUE;
 			}
 			else
@@ -2057,7 +2090,7 @@ bool LLViewerFetchedTexture::updateFetch()
 		// Load the texture progressively: we try not to rush to the desired discard too fast.
 		// If the camera is not moving, we do not tweak the discard level notch by notch but go to the desired discard with larger boosted steps
 		// This mitigates the "textures stay blurry" problem when loading while not killing the texture memory while moving around
-		S32 delta_level = (mBoostLevel > LLGLTexture::BOOST_NONE) ? 2 : 1; 
+		S32 delta_level = (mBoostLevel > LLGLTexture::BOOST_ALM) ? 2 : 1; 
 		if (current_discard < 0)
 		{
 			desired_discard = llmax(desired_discard, getMaxDiscardLevel() - delta_level);
@@ -2688,7 +2721,7 @@ LLImageRaw* LLViewerFetchedTexture::reloadRawImage(S8 discard_level)
 
 	if(mSavedRawDiscardLevel >= 0 && mSavedRawDiscardLevel <= discard_level)
 	{
-		if(mSavedRawDiscardLevel != discard_level)
+		if (mSavedRawDiscardLevel != discard_level && mBoostLevel != BOOST_ICON)
 		{
 			mRawImage = new LLImageRaw(getWidth(discard_level), getHeight(discard_level), getComponents());
 			mRawImage->copy(getSavedRawImage());
@@ -2792,7 +2825,24 @@ void LLViewerFetchedTexture::setCachedRawImage(S32 discard_level, LLImageRaw* im
 	{
 		if(mCachedRawImage.notNull())
 			mCachedRawImage->setInCache(false);
-		mCachedRawImage = imageraw;
+		if (mBoostLevel == LLGLTexture::BOOST_ICON)
+		{
+			S32 expected_width = mKnownDrawWidth > 0 ? mKnownDrawWidth : DEFAULT_ICON_DIMENTIONS;
+			S32 expected_height = mKnownDrawHeight > 0 ? mKnownDrawHeight : DEFAULT_ICON_DIMENTIONS;
+			if (mRawImage->getWidth() > expected_width || mRawImage->getHeight() > expected_height)
+			{
+				mCachedRawImage = new LLImageRaw(expected_width, expected_height, imageraw->getComponents());
+				mCachedRawImage->copyScaled(imageraw);
+			}
+			else
+			{
+				mCachedRawImage = imageraw;
+			}
+		}
+		else
+		{
+			mCachedRawImage = imageraw;
+		}
 		if(mCachedRawImage.notNull())
 			mCachedRawImage->setInCache(true);
 		mCachedRawDiscardLevel = discard_level;
@@ -2900,7 +2950,24 @@ void LLViewerFetchedTexture::saveRawImage()
 	}
 
 	mSavedRawDiscardLevel = mRawDiscardLevel;
-	mSavedRawImage = new LLImageRaw(mRawImage->getData(), mRawImage->getWidth(), mRawImage->getHeight(), mRawImage->getComponents());
+	if (mBoostLevel == LLGLTexture::BOOST_ICON)
+	{
+		S32 expected_width = mKnownDrawWidth > 0 ? mKnownDrawWidth : DEFAULT_ICON_DIMENTIONS;
+		S32 expected_height = mKnownDrawHeight > 0 ? mKnownDrawHeight : DEFAULT_ICON_DIMENTIONS;
+		if (mRawImage->getWidth() > expected_width || mRawImage->getHeight() > expected_height)
+		{
+			mSavedRawImage = new LLImageRaw(expected_width, expected_height, mRawImage->getComponents());
+			mSavedRawImage->copyScaled(mRawImage);
+		}
+		else
+		{
+			mSavedRawImage = new LLImageRaw(mRawImage->getData(), mRawImage->getWidth(), mRawImage->getHeight(), mRawImage->getComponents());
+		}
+	}
+	else
+	{
+		mSavedRawImage = new LLImageRaw(mRawImage->getData(), mRawImage->getWidth(), mRawImage->getHeight(), mRawImage->getComponents());
+	}
 
 	if(mForceToSaveRawImage && mSavedRawDiscardLevel <= mDesiredSavedRawDiscardLevel)
 	{
@@ -3079,6 +3146,10 @@ void LLViewerLODTexture::processTextureStats()
 		if (mFullWidth > MAX_IMAGE_SIZE_DEFAULT || mFullHeight > MAX_IMAGE_SIZE_DEFAULT)
 			mDesiredDiscardLevel = 1; // MAX_IMAGE_SIZE_DEFAULT = 1024 and max size ever is 2048
 	}
+	else if (!LLPipeline::sRenderDeferred && mBoostLevel == LLGLTexture::BOOST_ALM)
+	{
+		mDesiredDiscardLevel = MAX_DISCARD_LEVEL + 1;
+	}
 	else if (mBoostLevel < LLGLTexture::BOOST_HIGH && mMaxVirtualSize <= 10.f)
 	{
 		// If the image has not been significantly visible in a while, we don't want it
@@ -3101,6 +3172,7 @@ void LLViewerLODTexture::processTextureStats()
 		if (mKnownDrawWidth && mKnownDrawHeight)
 		{
 			S32 draw_texels = mKnownDrawWidth * mKnownDrawHeight;
+			draw_texels = llclamp(draw_texels, MIN_IMAGE_AREA, MAX_IMAGE_AREA);
 
 			// Use log_4 because we're in square-pixel space, so an image
 			// with twice the width and twice the height will have mTexelsPerImage
@@ -3138,8 +3210,13 @@ void LLViewerLODTexture::processTextureStats()
 		discard_level = floorf(discard_level);
 
 		F32 min_discard = 0.f;
-		if (mFullWidth > MAX_IMAGE_SIZE_DEFAULT || mFullHeight > MAX_IMAGE_SIZE_DEFAULT)
-			min_discard = 1.f; // MAX_IMAGE_SIZE_DEFAULT = 1024 and max size ever is 2048
+		S32 desired_size = MAX_IMAGE_SIZE_DEFAULT; // MAX_IMAGE_SIZE_DEFAULT = 1024 and max size ever is 2048
+		if (mBoostLevel <= LLGLTexture::BOOST_SCULPTED)
+		{
+			desired_size = DESIRED_NORMAL_TEXTURE_SIZE;
+		}
+		if (mFullWidth > desired_size || mFullHeight > desired_size)
+			min_discard = 1.f;
 
 		discard_level = llclamp(discard_level, min_discard, (F32)MAX_DISCARD_LEVEL);
 		
diff --git a/indra/newview/llvoavatar.cpp b/indra/newview/llvoavatar.cpp
index 9c0c56efc..d70df9892 100644
--- a/indra/newview/llvoavatar.cpp
+++ b/indra/newview/llvoavatar.cpp
@@ -1114,6 +1114,7 @@ LLVOAvatar::LLVOAvatar(const LLUUID& id,
 	mLastUpdateRequestCOFVersion(-1),
 	mLastUpdateReceivedCOFVersion(-1),
 	mIsUIAvatar(false),
+	mEnableDefaultMotions(true),
 	// <edit>
 	mHasPhysicsParameters( false ),
 	mIdleMinute(0),
@@ -1233,9 +1234,6 @@ LLVOAvatar::~LLVOAvatar()
 	LL_DEBUGS("Avatar") << "LLVOAvatar Destructor (0x" << this << ") id:" << mID << LL_ENDL;
 
 	std::for_each(mAttachmentPoints.begin(), mAttachmentPoints.end(), DeletePairedPointer());
-#if USE_LL_APPEARANCE_CODE
-	mAttachmentPoints.clear();
-#endif
 	
 	mDead = TRUE;
 	
@@ -1566,7 +1564,7 @@ void LLVOAvatar::cleanupClass()
 }
 
 // virtual
-void LLVOAvatar::initInstance(void)
+void LLVOAvatar::initInstance()
 {
 	//-------------------------------------------------------------------------
 	// register motions
@@ -1709,6 +1707,11 @@ void LLVOAvatar::onShift(const LLVector4a& shift_vector)
 
 void LLVOAvatar::updateSpatialExtents(LLVector4a& newMin, LLVector4a &newMax)
 {
+	if (mDrawable.isNull())
+	{
+		return;
+	}
+
 	if (isImpostor() && !needsImpostorUpdate())
 	{
 		LLVector3 delta = getRenderPosition() -
@@ -1889,13 +1892,23 @@ void LLVOAvatar::renderCollisionVolumes()
 		static F32 sphere_scale = 1.0f;
 		static F32 center_dot_scale = 0.05f;
 
-		static LLVector3 CV_COLOR_OCCLUDED(0.0f, 0.0f, 1.0f);
-		static LLVector3 CV_COLOR_VISIBLE(0.5f, 0.5f, 1.0f);
-		static LLVector3 DOT_COLOR_OCCLUDED(1.0f, 1.0f, 1.0f);
-		static LLVector3 DOT_COLOR_VISIBLE(1.0f, 1.0f, 1.0f);
+        static LLVector3 BLUE(0.0f, 0.0f, 1.0f);
+        static LLVector3 PASTEL_BLUE(0.5f, 0.5f, 1.0f);
+        static LLVector3 RED(1.0f, 0.0f, 0.0f);
+        static LLVector3 PASTEL_RED(1.0f, 0.5f, 0.5f);
+        static LLVector3 WHITE(1.0f, 1.0f, 1.0f);
 
-		render_sphere_and_line(begin_pos, end_pos, sphere_scale, CV_COLOR_OCCLUDED, CV_COLOR_VISIBLE);
-		render_sphere_and_line(begin_pos, end_pos, center_dot_scale, DOT_COLOR_OCCLUDED, DOT_COLOR_VISIBLE);
+
+        LLVector3 cv_color_occluded;
+        LLVector3 cv_color_visible;
+        LLVector3 dot_color_occluded(WHITE);
+        LLVector3 dot_color_visible(WHITE);
+        {
+            cv_color_occluded = BLUE;
+            cv_color_visible = PASTEL_BLUE;
+        }
+        render_sphere_and_line(begin_pos, end_pos, sphere_scale, cv_color_occluded, cv_color_visible);
+        render_sphere_and_line(begin_pos, end_pos, center_dot_scale, dot_color_occluded, dot_color_visible);
 
 		gGL.popMatrix();
 	}
@@ -2123,6 +2136,7 @@ BOOL LLVOAvatar::lineSegmentIntersect(const LLVector4a& start, const LLVector4a&
 
 		if (isSelf())
 		{
+#if SLOW_ATTACHMENT_LIST
 			for (attachment_map_t::iterator iter = mAttachmentPoints.begin(); 
 			 iter != mAttachmentPoints.end();
 			 ++iter)
@@ -2134,6 +2148,12 @@ BOOL LLVOAvatar::lineSegmentIntersect(const LLVector4a& start, const LLVector4a&
 					 ++attachment_iter)
 				{
 					LLViewerObject* attached_object = (*attachment_iter);
+#else
+			for(auto& iter : mAttachedObjectsVector)
+			{{
+					const LLViewerJointAttachment* attachment = iter.second;
+					const LLViewerObject* attached_object = iter.first;
+#endif
 					
 					if (attached_object && !attached_object->isDead() && attachment->getValid())
 					{
@@ -2187,6 +2207,7 @@ LLViewerObject* LLVOAvatar::lineSegmentIntersectRiggedAttachments(const LLVector
 		LLVector4a local_end = end;
 		LLVector4a local_intersection;
 
+#if SLOW_ATTACHMENT_LIST
 		for (attachment_map_t::iterator iter = mAttachmentPoints.begin(); 
 			iter != mAttachmentPoints.end();
 			++iter)
@@ -2198,7 +2219,12 @@ LLViewerObject* LLVOAvatar::lineSegmentIntersectRiggedAttachments(const LLVector
 					++attachment_iter)
 			{
 				LLViewerObject* attached_object = (*attachment_iter);
-					
+#else
+		for(auto& iter : mAttachedObjectsVector)
+		{{
+				LLViewerObject* attached_object = iter.first;
+#endif
+
 				if (attached_object->lineSegmentIntersect(start, local_end, face, pick_transparent, face_hit, &local_intersection, tex_coord, normal, tangent))
 				{
 					local_end = local_intersection;
@@ -2280,6 +2306,11 @@ void LLVOAvatar::buildCharacter()
 		mAahMorph = getVisualParam( "Express_Open_Mouth" );
 	}
 
+    // Currently disabled for control avatars (animated objects), enabled for all others.
+    if (mEnableDefaultMotions)
+    {
+        startDefaultMotions();
+    }
 	startDefaultMotions();
 
 	//-------------------------------------------------------------------------
@@ -2394,8 +2425,11 @@ void LLVOAvatar::resetSkeleton(bool reset_animations)
     }
 
     // Reset tweakable params to preserved state
-    bool slam_params = true;
-    applyParsedAppearanceMessage(*mLastProcessedAppearance, slam_params);
+    if (mLastProcessedAppearance)
+    {
+        bool slam_params = true;
+        applyParsedAppearanceMessage(*mLastProcessedAppearance, slam_params);
+    }
     updateVisualParams();
 
     // Restore attachment pos overrides
@@ -7353,7 +7387,7 @@ void LLVOAvatar::lazyAttach()
 
 void LLVOAvatar::resetHUDAttachments()
 {
-
+#if SLOW_ATTACHMENT_LIST
 	for (attachment_map_t::iterator iter = mAttachmentPoints.begin(); 
 		 iter != mAttachmentPoints.end();
 		 ++iter)
@@ -7366,6 +7400,14 @@ void LLVOAvatar::resetHUDAttachments()
 				 ++attachment_iter)
 			{
 				const LLViewerObject* attached_object = (*attachment_iter);
+#else
+	for(auto& iter : mAttachedObjectsVector)
+	{{{
+				const LLViewerJointAttachment* attachment = iter.second;
+				if (!attachment->getIsHUDAttachment())
+					continue;
+				const LLViewerObject* attached_object = iter.first;
+#endif
 				if (attached_object && attached_object->mDrawable.notNull())
 				{
 					gPipeline.markMoved(attached_object->mDrawable);
@@ -7377,6 +7419,7 @@ void LLVOAvatar::resetHUDAttachments()
 
 void LLVOAvatar::rebuildRiggedAttachments( void )
 {
+#if SLOW_ATTACHMENT_LIST
 	for ( attachment_map_t::iterator iter = mAttachmentPoints.begin(); iter != mAttachmentPoints.end(); ++iter )
 	{
 		LLViewerJointAttachment* pAttachment = iter->second;
@@ -7386,6 +7429,12 @@ void LLVOAvatar::rebuildRiggedAttachments( void )
 			 attachmentIter != attachmentIterEnd; ++attachmentIter)
 		{
 			const LLViewerObject* pAttachedObject =  *attachmentIter;
+#else
+	for(auto& iter : mAttachedObjectsVector)
+	{{
+			const LLViewerObject* pAttachedObject = iter.first;
+			const LLViewerJointAttachment* pAttachment = iter.second;
+#endif
 			if ( pAttachment && pAttachedObject->mDrawable.notNull() )
 			{
 				gPipeline.markRebuild(pAttachedObject->mDrawable);
@@ -7568,7 +7617,10 @@ void LLVOAvatar::getOffObject()
 	mRoot->setRotation(cur_rotation_world);
 	mRoot->getXform()->update();
 
+	if (mEnableDefaultMotions)
+	{
 	startMotion(ANIM_AGENT_BODY_NOISE);
+	}
 
 	if (isSelf())
 	{
@@ -7703,6 +7755,7 @@ LLViewerObject* LLVOAvatar::getWornAttachment( const LLUUID& inv_item_id )
 
 LLViewerObject *	LLVOAvatar::findAttachmentByID( const LLUUID & target_id ) const
 {
+#if SLOW_ATTACHMENT_LIST
 	for(attachment_map_t::const_iterator attachment_points_iter = mAttachmentPoints.begin();
 		attachment_points_iter != gAgentAvatarp->mAttachmentPoints.end();
 		++attachment_points_iter)
@@ -7713,6 +7766,11 @@ LLViewerObject *	LLVOAvatar::findAttachmentByID( const LLUUID & target_id ) cons
 			 ++attachment_iter)
 		{
 			LLViewerObject *attached_object = (*attachment_iter);
+#else
+	for(auto& iter : mAttachedObjectsVector)
+	{{
+			LLViewerObject* attached_object =  iter.first;
+#endif
 			if (attached_object &&
 				attached_object->getID() == target_id)
 			{
@@ -8563,6 +8621,7 @@ BOOL LLVOAvatar::hasHUDAttachment() const
 LLBBox LLVOAvatar::getHUDBBox() const
 {
 	LLBBox bbox;
+#if SLOW_ATTACHMENT_LIST
 	for (attachment_map_t::const_iterator iter = mAttachmentPoints.begin(); 
 		 iter != mAttachmentPoints.end();
 		 ++iter)
@@ -8575,6 +8634,14 @@ LLBBox LLVOAvatar::getHUDBBox() const
 				 ++attachment_iter)
 			{
 				const LLViewerObject* attached_object = (*attachment_iter);
+#else
+	for(auto& iter : mAttachedObjectsVector)
+	{{{
+				const LLViewerJointAttachment* attachment = iter.second;
+				if (!attachment || !attachment->getIsHUDAttachment())
+					continue;
+				const LLViewerObject* attached_object =  iter.first;
+#endif
 				if (attached_object == NULL)
 				{
 					LL_WARNS() << "HUD attached object is NULL!" << LL_ENDL;
diff --git a/indra/newview/llvoavatar.h b/indra/newview/llvoavatar.h
index 5fdd4126f..0593f0fc2 100644
--- a/indra/newview/llvoavatar.h
+++ b/indra/newview/llvoavatar.h
@@ -51,7 +51,7 @@
 #include "llviewertexlayer.h"
 #include "material_codes.h"		// LL_MCODE_END
 #include "llviewerstats.h"
-
+#include "llvovolume.h"
 #include "llavatarname.h"
 
 //<singu>
@@ -477,6 +477,7 @@ private:
 
 public:
     bool mIsUIAvatar;
+    bool mEnableDefaultMotions;
 	//--------------------------------------------------------------------
 	// Morph masks
 	//--------------------------------------------------------------------
diff --git a/indra/newview/llvovolume.cpp b/indra/newview/llvovolume.cpp
index 385a9e5bf..54705270d 100644
--- a/indra/newview/llvovolume.cpp
+++ b/indra/newview/llvovolume.cpp
@@ -85,6 +85,7 @@
 #include "llvoavatar.h"
 #include "llvocache.h"
 #include "llmaterialmgr.h"
+#include "llsculptidsize.h"
 
 // [RLVa:KB] - Checked: 2010-04-04 (RLVa-1.2.0d)
 #include "rlvhandler.h"
@@ -262,6 +263,7 @@ void LLVOVolume::markDead()
 {
 	if (!mDead)
 	{
+		LLSculptIDSize::instance().rem(getVolume()->getParams().getSculptID());
 		if(getMDCImplCount() > 0)
 		{
 			LLMediaDataClientObject::ptr_t obj = new LLMediaDataClientObjectImpl(const_cast<LLVOVolume*>(this), false);
@@ -1078,8 +1080,10 @@ BOOL LLVOVolume::setVolume(const LLVolumeParams &params_in, const S32 detail, bo
 
 		return TRUE;
 	}
-
-
+	else if (NO_LOD == lod) 
+	{
+		LLSculptIDSize::instance().resetSizeSum(volume_params.getSculptID());
+	}
 
 	return FALSE;
 }
@@ -1304,7 +1308,16 @@ BOOL LLVOVolume::updateLOD()
 		return FALSE;
 	}
 	
-	BOOL lod_changed = calcLOD();
+	BOOL lod_changed = FALSE;
+
+	if (!LLSculptIDSize::instance().isUnloaded(getVolume()->getParams().getSculptID())) 
+	{
+		lod_changed = calcLOD();
+	}
+	else
+	{
+		return FALSE;
+	}
 
 	if (lod_changed)
 	{
@@ -3346,6 +3359,7 @@ U32 LLVOVolume::getRenderCost(texture_cost_t &textures) const
 	static const F32 ARC_BUMP_MULT = 1.25f; // tested based on performance
 	static const F32 ARC_FLEXI_MULT = 5; // tested based on performance
 	static const F32 ARC_SHINY_MULT = 1.6f; // tested based on performance
+	static const F32 ARC_INVISI_COST = 1.2f; // tested based on performance
 	static const F32 ARC_WEIGHTED_MESH = 1.2f; // tested based on performance
 
 	static const F32 ARC_PLANAR_COST = 1.0f; // tested based on performance to have negligible impact
@@ -3354,6 +3368,7 @@ U32 LLVOVolume::getRenderCost(texture_cost_t &textures) const
 
 	F32 shame = 0;
 
+	U32 invisi = 0;
 	U32 shiny = 0;
 	U32 glow = 0;
 	U32 alpha = 0;
@@ -3384,7 +3399,7 @@ U32 LLVOVolume::getRenderCost(texture_cost_t &textures) const
 		}
 	}
 
-	if (num_triangles == 0)
+	if (num_triangles <= 0)
 	{
 		num_triangles = 4;
 	}
@@ -3395,10 +3410,10 @@ U32 LLVOVolume::getRenderCost(texture_cost_t &textures) const
 		{
 			// base cost is dependent on mesh complexity
 			// note that 3 is the highest LOD as of the time of this coding.
-			S32 size = gMeshRepo.getMeshSize(volume_params.getSculptID(),3);
+			S32 size = gMeshRepo.getMeshSize(volume_params.getSculptID(), getLOD());
 			if ( size > 0)
 			{
-				if (gMeshRepo.getSkinInfo(volume_params.getSculptID(), this))
+				if (isRiggedMesh())
 				{
 					// weighted attachment - 1 point for every 3 bytes
 					weighted_mesh = 1;
@@ -3461,6 +3476,10 @@ U32 LLVOVolume::getRenderCost(texture_cost_t &textures) const
 		{
 			alpha = 1;
 		}
+		else if (img && img->getPrimaryFormat() == GL_ALPHA)
+		{
+			invisi = 1;
+		}
 		if (face->hasMedia())
 		{
 			media_faces++;
@@ -3514,6 +3533,11 @@ U32 LLVOVolume::getRenderCost(texture_cost_t &textures) const
 		shame *= alpha * ARC_ALPHA_COST;
 	}
 
+	if(invisi)
+	{
+		shame *= invisi * ARC_INVISI_COST;
+	}
+
 	if (glow)
 	{
 		shame *= glow * ARC_GLOW_MULT;
diff --git a/indra/newview/pipeline.cpp b/indra/newview/pipeline.cpp
index 3a34dd8f5..608c4c872 100644
--- a/indra/newview/pipeline.cpp
+++ b/indra/newview/pipeline.cpp
@@ -2514,7 +2514,7 @@ void LLPipeline::doOcclusion(LLCamera& camera, LLRenderTarget& source, LLRenderT
 
 void LLPipeline::doOcclusion(LLCamera& camera)
 {
-	if (LLGLSLShader::sNoFixedFunction && LLPipeline::sUseOcclusion > 1 && sCull->hasOcclusionGroups())
+	if (LLGLSLShader::sNoFixedFunction && LLPipeline::sUseOcclusion > 1 && !LLSpatialPartition::sTeleportRequested && sCull->hasOcclusionGroups())
 	{
 		LLVertexBuffer::unbind();
 
@@ -2668,6 +2668,52 @@ void LLPipeline::clearRebuildGroups()
 	mGroupQ2Locked = false;
 }
 
+void LLPipeline::clearRebuildDrawables()
+{
+	// Clear all drawables on the priority build queue,
+	for (LLDrawable::drawable_list_t::iterator iter = mBuildQ1.begin();
+		 iter != mBuildQ1.end(); ++iter)
+	{
+		LLDrawable* drawablep = *iter;
+		if (drawablep && !drawablep->isDead())
+		{
+			drawablep->clearState(LLDrawable::IN_REBUILD_Q2);
+			drawablep->clearState(LLDrawable::IN_REBUILD_Q1);
+		}
+	}
+	mBuildQ1.clear();
+
+	// clear drawables on the non-priority build queue
+	for (LLDrawable::drawable_list_t::iterator iter = mBuildQ2.begin();
+		 iter != mBuildQ2.end(); ++iter)
+	{
+		LLDrawable* drawablep = *iter;
+		if (!drawablep->isDead())
+		{
+			drawablep->clearState(LLDrawable::IN_REBUILD_Q2);
+		}
+	}	
+	mBuildQ2.clear();
+	
+	//clear all moving bridges
+	for (LLDrawable::drawable_vector_t::iterator iter = mMovedBridge.begin();
+		 iter != mMovedBridge.end(); ++iter)
+	{
+		LLDrawable *drawablep = *iter;
+		drawablep->clearState(LLDrawable::EARLY_MOVE | LLDrawable::MOVE_UNDAMPED | LLDrawable::ON_MOVE_LIST | LLDrawable::ANIMATED_CHILD);
+	}
+	mMovedBridge.clear();
+
+	//clear all moving drawables
+	for (LLDrawable::drawable_vector_t::iterator iter = mMovedList.begin();
+		 iter != mMovedList.end(); ++iter)
+	{
+		LLDrawable *drawablep = *iter;
+		drawablep->clearState(LLDrawable::EARLY_MOVE | LLDrawable::MOVE_UNDAMPED | LLDrawable::ON_MOVE_LIST | LLDrawable::ANIMATED_CHILD);
+	}
+	mMovedList.clear();
+}
+
 static LLTrace::BlockTimerStatHandle FTM_REBUILD_PRIORITY_GROUPS("Rebuild Priority Groups");
 
 void LLPipeline::rebuildPriorityGroups()
@@ -2783,6 +2829,11 @@ void LLPipeline::updateGeom(F32 max_dtime, LLCamera& camera)
 				}
 			}
 
+			if (drawablep->isUnload())
+			{
+				drawablep->unload();
+				drawablep->clearState(LLDrawable::FOR_UNLOAD);
+			}
 			if (updateDrawableGeom(drawablep, TRUE))
 			{
 				drawablep->clearState(LLDrawable::IN_REBUILD_Q1);
@@ -6591,16 +6642,37 @@ void LLPipeline::resetVertexBuffers()
 
 static LLTrace::BlockTimerStatHandle FTM_RESET_VB("Reset VB");
 
-void LLPipeline::doResetVertexBuffers()
+void LLPipeline::doResetVertexBuffers(bool forced)
 {
 	if ( !mResetVertexBuffers)
 	{
 		return;
 	}
-	mResetVertexBuffers = false;
+	if(!forced && LLSpatialPartition::sTeleportRequested)
+	{
+		if(gAgent.getTeleportState() != LLAgent::TELEPORT_NONE)
+		{
+			return; //wait for teleporting to finish
+		}
+		else
+		{
+			//teleporting aborted
+			LLSpatialPartition::sTeleportRequested = FALSE;
+			mResetVertexBuffers = false;
+			return;
+		}
+	}
 
 	LL_RECORD_BLOCK_TIME(FTM_RESET_VB);
+	mResetVertexBuffers = false;
 	releaseVertexBuffers();
+	if(LLSpatialPartition::sTeleportRequested)
+	{
+		LLSpatialPartition::sTeleportRequested = FALSE;
+
+		LLWorld::getInstance()->clearAllVisibleObjects();
+		clearRebuildDrawables();
+	}
 
 	refreshCachedSettings();
 
diff --git a/indra/newview/pipeline.h b/indra/newview/pipeline.h
index bbe736d8c..4094fbc8b 100644
--- a/indra/newview/pipeline.h
+++ b/indra/newview/pipeline.h
@@ -115,7 +115,7 @@ public:
 	void destroyGL();
 	void restoreGL();
 	void resetVertexBuffers();
-	void doResetVertexBuffers();
+	void doResetVertexBuffers(bool forced = false);
 	void resizeScreenTexture();
 	void releaseVertexBuffers();
 	void releaseGLBuffers();
@@ -254,6 +254,7 @@ public:
 	void rebuildPriorityGroups();
 	void rebuildGroups();
 	void clearRebuildGroups();
+	void clearRebuildDrawables();
 
 	//calculate pixel area of given box from vantage point of given camera
 	static F32 calcPixelArea(LLVector3 center, LLVector3 size, LLCamera& camera);
diff --git a/indra/newview/wlfPanel_AdvSettings.cpp b/indra/newview/wlfPanel_AdvSettings.cpp
index b105d22a2..472847a12 100644
--- a/indra/newview/wlfPanel_AdvSettings.cpp
+++ b/indra/newview/wlfPanel_AdvSettings.cpp
@@ -467,7 +467,7 @@ void syncFromPreferenceSetting(LLSliderCtrl* sldrCtrl)
 	{
 		LLVector3 offset(0.0, 0.0, llclamp(value,MIN_HOVER_Z,MAX_HOVER_Z));
 		LL_INFOS("Avatar") << "setting hover from preference setting " << offset[2] << LL_ENDL;
-		gAgentAvatarp->setHoverOffset(offset);
+		gAgentAvatarp->setHoverIfRegionEnabled();
 	}
 }
 
@@ -476,19 +476,22 @@ void onHoverSliderMoved(const LLSD& val)
 	F32 value = val.asFloat();
 	LLVector3 offset(0.0, 0.0, llclamp(value,MIN_HOVER_Z,MAX_HOVER_Z));
 	LL_INFOS("Avatar") << "setting hover from slider moved" << offset[2] << LL_ENDL;
-	gAgentAvatarp->setHoverOffset(offset, false);
 }
 
+bool sInwlfPanelUpdate = false;
+
 // Do send-to-the-server work when slider drag completes, or new
 // value entered as text.
 void onHoverSliderFinalCommit(const LLSD& val)
 {
+	sInwlfPanelUpdate = true;
 	F32 value = val.asFloat();
 	gSavedPerAccountSettings.setF32("AvatarHoverOffsetZ", value);
 
 	LLVector3 offset(0.0, 0.0, llclamp(value,MIN_HOVER_Z,MAX_HOVER_Z));
 	LL_INFOS("Avatar") << "setting hover from slider final commit " << offset[2] << LL_ENDL;
-	gAgentAvatarp->setHoverOffset(offset, true); // will send update this time.
+	gAgentAvatarp->setHoverIfRegionEnabled(); // will send update this time.
+	sInwlfPanelUpdate = false;
 }
 
 void wlfPanel_AdvSettings::onRegionChanged()