merge

10 files changed, 320 insertions, 287 deletions

diff --git a/indra/llprimitive/llmodel.cpp b/indra/llprimitive/llmodel.cpp
index 81420fadb7..595f9aa307 100755
--- a/indra/llprimitive/llmodel.cpp
+++ b/indra/llprimitive/llmodel.cpp
@@ -1881,24 +1881,29 @@ LLModel::weight_list& LLModel::getJointInfluences(const LLVector3& pos)
 void LLModel::setConvexHullDecomposition(
 	const LLModel::convex_hull_decomposition& decomp)
 {
-	mConvexHullDecomp = decomp;
+	mPhysics.mHull = decomp;
+	mPhysics.mMesh.clear();
+	updateHullCenters();
+}
 
-	mHullCenter.resize(mConvexHullDecomp.size());
+void LLModel::updateHullCenters()
+{
+	mHullCenter.resize(mPhysics.mHull.size());
 	mHullPoints = 0;
 	mCenterOfHullCenters.clear();
 
-	for (U32 i = 0; i < decomp.size(); ++i)
+	for (U32 i = 0; i < mPhysics.mHull.size(); ++i)
 	{
 		LLVector3 cur_center;
 
-		for (U32 j = 0; j < decomp[i].size(); ++j)
+		for (U32 j = 0; j < mPhysics.mHull[i].size(); ++j)
 		{
-			cur_center += decomp[i][j];
+			cur_center += mPhysics.mHull[i][j];
 		}
 		mCenterOfHullCenters += cur_center;
-		cur_center *= 1.f/decomp[i].size();
+		cur_center *= 1.f/mPhysics.mHull[i].size();
 		mHullCenter[i] = cur_center;
-		mHullPoints += decomp[i].size();
+		mHullPoints += mPhysics.mHull[i].size();
 	}
 
 	mCenterOfHullCenters *= 1.f / mHullPoints;
@@ -1944,12 +1949,15 @@ bool LLModel::loadModel(std::istream& is)
 		std::ios::pos_type cur_pos = is.tellg();

 		loadSkinInfo(header, is);

 		is.seekg(cur_pos);

+	}

+

+	if (lod == LLModel::LOD_PHYSICS)

+	{

+		std::ios::pos_type cur_pos = is.tellg();

 		loadDecomposition(header, is);

 		is.seekg(cur_pos);

 	}

 

-	

-

 	is.seekg(header[nm[lod]]["offset"].asInteger(), std::ios_base::cur);

 

 	if (unpackVolumeFaces(is, header[nm[lod]]["size"].asInteger()))

@@ -2019,6 +2027,22 @@ bool LLModel::loadSkinInfo(LLSD& header, std::istream &is)
 
 bool LLModel::loadDecomposition(LLSD& header, std::istream& is)
 {
+	S32 offset = header["decomposition"]["offset"].asInteger();
+	S32 size = header["decomposition"]["size"].asInteger();
+
+	if (offset >= 0 && size > 0)
+	{
+		is.seekg(offset, std::ios_base::cur);
+
+		LLSD data;
+
+		if (unzip_llsd(data, is, size))
+		{
+			mPhysics.fromLLSD(data);
+			updateHullCenters();
+		}
+	}
+
 	return true;
 }
 
@@ -2133,3 +2157,104 @@ LLSD LLMeshSkinInfo::asLLSD(bool include_joints) const
 	return ret;
 }
 
+LLModel::Decomposition::Decomposition(LLSD& data)
+{
+	fromLLSD(data);
+}
+
+void LLModel::Decomposition::fromLLSD(LLSD& decomp)
+{
+	if (decomp.has("HullList"))
+	{
+		// updated for const-correctness. gcc is picky about this type of thing - Nyx
+		const LLSD::Binary& hulls = decomp["HullList"].asBinary();
+		const LLSD::Binary& position = decomp["Position"].asBinary();
+
+		U16* p = (U16*) &position[0];
+
+		mHull.resize(hulls.size());
+
+		LLVector3 min;
+		LLVector3 max;
+		LLVector3 range;
+
+		min.setValue(decomp["Min"]);
+		max.setValue(decomp["Max"]);
+		range = max-min;
+
+		for (U32 i = 0; i < hulls.size(); ++i)
+		{
+			U16 count = (hulls[i] == 0) ? 256 : hulls[i];
+			
+			for (U32 j = 0; j < count; ++j)
+			{
+				mHull[i].push_back(LLVector3(
+					(F32) p[0]/65535.f*range.mV[0]+min.mV[0],
+					(F32) p[1]/65535.f*range.mV[1]+min.mV[1],
+					(F32) p[2]/65535.f*range.mV[2]+min.mV[2]));
+				p += 3;
+			}		 
+
+		}
+	}
+
+	if (decomp.has("Hull"))
+	{
+		const LLSD::Binary& position = decomp["Hull"].asBinary();
+
+		U16* p = (U16*) &position[0];
+
+		LLVector3 min;
+		LLVector3 max;
+		LLVector3 range;
+
+		min.setValue(decomp["Min"]);
+		max.setValue(decomp["Max"]);
+		range = max-min;
+
+		U16 count = position.size()/6;
+		
+		for (U32 j = 0; j < count; ++j)
+		{
+			mBaseHull.push_back(LLVector3(
+				(F32) p[0]/65535.f*range.mV[0]+min.mV[0],
+				(F32) p[1]/65535.f*range.mV[1]+min.mV[1],
+				(F32) p[2]/65535.f*range.mV[2]+min.mV[2]));
+			p += 3;
+		}		 
+	}
+	else
+	{
+		//empty base hull mesh to indicate decomposition has been loaded
+		//but contains no base hull
+		mBaseHullMesh.clear();;
+	}
+
+}
+
+void LLModel::Decomposition::merge(const LLModel::Decomposition* rhs)
+{
+	if (!rhs)
+	{
+		return;
+	}
+
+	if (mMeshID != rhs->mMeshID)
+	{
+		llerrs << "Attempted to merge with decomposition of some other mesh." << llendl;
+	}
+
+	if (mBaseHull.empty())
+	{ //take base hull and decomposition from rhs
+		mHull = rhs->mHull;
+		mBaseHull = rhs->mBaseHull;
+		mMesh = rhs->mMesh;
+		mBaseHullMesh = rhs->mBaseHullMesh;
+	}
+
+	if (mPhysicsShapeMesh.empty())
+	{ //take physics shape mesh from rhs
+		mPhysicsShapeMesh = rhs->mPhysicsShapeMesh;
+	}
+}
+
diff --git a/indra/llprimitive/llmodel.h b/indra/llprimitive/llmodel.h
index 81be9d1835..e9450d2967 100755
--- a/indra/llprimitive/llmodel.h
+++ b/indra/llprimitive/llmodel.h
@@ -27,6 +27,7 @@
 #ifndef LL_LLMODEL_H
 #define LL_LLMODEL_H
 
+#include "llpointer.h"
 #include "llvolume.h"
 #include "v4math.h"
 #include "m4math.h"
@@ -54,7 +55,6 @@ public:
 	float mPelvisOffset;
 };
 
-
 class LLModel : public LLVolume
 {
 public:
@@ -208,9 +208,10 @@ public:
 	float	mPelvisOffset;
 	// convex hull decomposition
 	S32 mDecompID;
-	convex_hull_decomposition mConvexHullDecomp;
+	
 	void setConvexHullDecomposition(
 		const convex_hull_decomposition& decomp);
+	void updateHullCenters();
 
 	LLVector3 mCenterOfHullCenters;
 	std::vector<LLVector3> mHullCenter;
@@ -219,6 +220,44 @@ public:
 	//ID for storing this model in a .slm file
 	S32 mLocalID;
 
+	class PhysicsMesh
+	{
+	public:
+		std::vector<LLVector3> mPositions;
+		std::vector<LLVector3> mNormals;
+
+		void clear()
+		{
+			mPositions.clear();
+			mNormals.clear();
+		}
+
+		bool empty() const
+		{
+			return mPositions.empty();
+		}
+	};
+
+	class Decomposition
+	{
+	public:
+		Decomposition() { }
+		Decomposition(LLSD& data);
+		void fromLLSD(LLSD& data);
+		
+		void merge(const Decomposition* rhs);
+
+		LLUUID mMeshID;
+		LLModel::convex_hull_decomposition mHull;
+		LLModel::hull mBaseHull;
+
+		std::vector<LLModel::PhysicsMesh> mMesh;
+		LLModel::PhysicsMesh mBaseHullMesh;
+		LLModel::PhysicsMesh mPhysicsShapeMesh;
+	};
+
+	Decomposition mPhysics;
+
 protected:
 	void addVolumeFacesFromDomMesh(domMesh* mesh);
 	virtual BOOL createVolumeFacesFromDomMesh(domMesh *mesh);
diff --git a/indra/llrender/llvertexbuffer.cpp b/indra/llrender/llvertexbuffer.cpp
index 0d3f5b81bc..73efbfc999 100644
--- a/indra/llrender/llvertexbuffer.cpp
+++ b/indra/llrender/llvertexbuffer.cpp
@@ -236,6 +236,22 @@ void LLVertexBuffer::setupClientArrays(U32 data_mask)
 	}
 }
 
+//static
+void LLVertexBuffer::drawArrays(U32 mode, const std::vector<LLVector3>& pos, const std::vector<LLVector3>& norm)
+{
+	U32 count = pos.size();
+	llassert(norm.size() >= pos.size());
+
+	unbind();
+	
+	setupClientArrays(MAP_VERTEX | MAP_NORMAL);
+
+	glVertexPointer(3, GL_FLOAT, 0, pos[0].mV);
+	glNormalPointer(GL_FLOAT, 0, norm[0].mV);
+
+	glDrawArrays(sGLMode[mode], 0, count);
+}
+
 void LLVertexBuffer::validateRange(U32 start, U32 end, U32 count, U32 indices_offset) const
 {
 	if (start >= (U32) mRequestedNumVerts ||
diff --git a/indra/llrender/llvertexbuffer.h b/indra/llrender/llvertexbuffer.h
index 2bbc17fb12..6c0895512e 100644
--- a/indra/llrender/llvertexbuffer.h
+++ b/indra/llrender/llvertexbuffer.h
@@ -97,6 +97,8 @@ public:
 	static void initClass(bool use_vbo, bool no_vbo_mapping);
 	static void cleanupClass();
 	static void setupClientArrays(U32 data_mask);
+	static void drawArrays(U32 mode, const std::vector<LLVector3>& pos, const std::vector<LLVector3>& norm);
+
  	static void clientCopy(F64 max_time = 0.005); //copy data from client to GL
 	static void unbind(); //unbind any bound vertex buffer
 
diff --git a/indra/newview/llfloatermodelpreview.cpp b/indra/newview/llfloatermodelpreview.cpp
index d8088e2f51..541511e448 100755
--- a/indra/newview/llfloatermodelpreview.cpp
+++ b/indra/newview/llfloatermodelpreview.cpp
@@ -2520,8 +2520,8 @@ U32 LLModelPreview::calcResourceCost()
 

 			LLModel::convex_hull_decomposition& decomp =

 			instance.mLOD[LLModel::LOD_PHYSICS] ?

-			instance.mLOD[LLModel::LOD_PHYSICS]->mConvexHullDecomp :

-			instance.mModel->mConvexHullDecomp;

+			instance.mLOD[LLModel::LOD_PHYSICS]->mPhysics.mHull :

+			instance.mModel->mPhysics.mHull;

 

 			LLSD ret = LLModel::writeModel(

 										   "",

@@ -2739,8 +2739,8 @@ void LLModelPreview::saveUploadData(const std::string& filename, bool save_skinw
 

 			LLModel::convex_hull_decomposition& decomp =

 				instance.mLOD[LLModel::LOD_PHYSICS].notNull() ? 

-				instance.mLOD[LLModel::LOD_PHYSICS]->mConvexHullDecomp : 

-				instance.mModel->mConvexHullDecomp;

+				instance.mLOD[LLModel::LOD_PHYSICS]->mPhysics.mHull : 

+				instance.mModel->mPhysics.mHull;

 

 			LLModel::writeModel(str, 

 				instance.mLOD[LLModel::LOD_PHYSICS], 

@@ -2993,14 +2993,8 @@ void LLModelPreview::loadModelCallback(S32 lod)
 		mScene[lod] = mModelLoader->mScene;

 		mVertexBuffer[lod].clear();

 

-		if (lod == LLModel::LOD_PHYSICS)

-		{

-			mPhysicsMesh.clear();

-		}

-

 		setPreviewLOD(lod);

 

-

 		if (lod == LLModel::LOD_HIGH)

 		{ //save a copy of the highest LOD for automatic LOD manipulation

 			if (mBaseModel.empty())

@@ -3123,11 +3117,6 @@ void LLModelPreview::genLODs(S32 which_lod, U32 decimation, bool enforce_tri_lim
 		return;

 	}

 

-	if (which_lod == LLModel::LOD_PHYSICS)

-	{ //clear physics mesh map

-		mPhysicsMesh.clear();

-	}

-

 	LLVertexBuffer::unbind();

 

 	stop_gloderror();

@@ -3676,7 +3665,7 @@ void LLModelPreview::updateStatusMessages()
 		LLModel* model = mModel[LLModel::LOD_PHYSICS][i];

 		S32 cur_submeshes = model->getNumVolumeFaces();

 

-		LLModel::convex_hull_decomposition& decomp = model->mConvexHullDecomp;

+		LLModel::convex_hull_decomposition& decomp = model->mPhysics.mHull;

 

 		if (!decomp.empty())

 		{

@@ -4313,12 +4302,17 @@ BOOL LLModelPreview::render()
 					{

 						LLMutexLock(decomp->mMutex);

 

-						std::map<LLPointer<LLModel>, std::vector<LLPointer<LLVertexBuffer> > >::iterator iter =

-							mPhysicsMesh.find(model);

-						if (iter != mPhysicsMesh.end())

+						LLModel::Decomposition& physics = model->mPhysics;

+

+						if (physics.mMesh.empty())

+						{ //build vertex buffer for physics mesh

+							gMeshRepo.buildPhysicsMesh(physics);

+						}

+							

+						if (!physics.mMesh.empty())

 						{ //render hull instead of mesh

 							render_mesh = false;

-							for (U32 i = 0; i < iter->second.size(); ++i)

+							for (U32 i = 0; i < physics.mMesh.size(); ++i)

 							{

 								if (explode > 0.f)

 								{

@@ -4337,15 +4331,9 @@ BOOL LLModelPreview::render()
 									hull_colors.push_back(LLColor4U(rand()%128+127, rand()%128+127, rand()%128+127, 255));

 								}

 

-								LLVertexBuffer* buff = iter->second[i];

-								if (buff)

-								{

-									buff->setBuffer(LLVertexBuffer::MAP_VERTEX | LLVertexBuffer::MAP_NORMAL);

-

-									glColor4ubv(hull_colors[i].mV);

-									buff->drawArrays(LLRender::TRIANGLES, 0, buff->getNumVerts());

-								}

-

+								glColor4ubv(hull_colors[i].mV);

+								LLVertexBuffer::drawArrays(LLRender::TRIANGLES, physics.mMesh[i].mPositions, physics.mMesh[i].mNormals);

+								

 								if (explode > 0.f)

 								{

 									gGL.popMatrix();

@@ -4724,7 +4712,6 @@ void LLFloaterModelPreview::DecompRequest::completed()
 			{

 				if (sInstance->mModelPreview)

 				{

-					sInstance->mModelPreview->mPhysicsMesh[mModel] = mHullMesh;

 					sInstance->mModelPreview->mDirty = true;

 					LLFloaterModelPreview::sInstance->mModelPreview->refresh();

 				}

diff --git a/indra/newview/llfloatermodelpreview.h b/indra/newview/llfloatermodelpreview.h
index 68fa0fa4c1..6542ed4fbe 100644
--- a/indra/newview/llfloatermodelpreview.h
+++ b/indra/newview/llfloatermodelpreview.h
@@ -358,8 +358,7 @@ public:
 	U32 mGroup;
 	std::map<LLPointer<LLModel>, U32> mObject;
 	U32 mMaxTriangleLimit;
-	std::map<LLPointer<LLModel>, std::vector<LLPointer<LLVertexBuffer> > > mPhysicsMesh;
-
+	
 	LLMeshUploadThread::instance_list mUploadData;
 	std::set<LLViewerFetchedTexture* > mTextureSet;
 
diff --git a/indra/newview/llfloatermodelwizard.cpp b/indra/newview/llfloatermodelwizard.cpp
index ad6e4ebe9c..8428ddb255 100644
--- a/indra/newview/llfloatermodelwizard.cpp
+++ b/indra/newview/llfloatermodelwizard.cpp
@@ -485,7 +485,6 @@ void LLFloaterModelWizard::DecompRequest::completed()
 	{
 		if (sInstance->mModelPreview)
 		{
-			sInstance->mModelPreview->mPhysicsMesh[mModel] = mHullMesh;
 			sInstance->mModelPreview->mDirty = true;
 			LLFloaterModelWizard::sInstance->mModelPreview->refresh();
 		}
diff --git a/indra/newview/llmeshrepository.cpp b/indra/newview/llmeshrepository.cpp
index f5fc0de0d3..752e4c8744 100755
--- a/indra/newview/llmeshrepository.cpp
+++ b/indra/newview/llmeshrepository.cpp
@@ -108,19 +108,13 @@ U32 get_volume_memory_size(const LLVolume* volume)
 	return indices*2+vertices*11+sizeof(LLVolume)+sizeof(LLVolumeFace)*volume->getNumVolumeFaces();
 }
 
-LLVertexBuffer* get_vertex_buffer_from_mesh(LLCDMeshData& mesh, F32 scale = 1.f)
+void get_vertex_buffer_from_mesh(LLCDMeshData& mesh, LLModel::PhysicsMesh& res, F32 scale = 1.f)
 {
-	LLVertexBuffer* buff = new LLVertexBuffer(LLVertexBuffer::MAP_VERTEX | LLVertexBuffer::MAP_NORMAL, 0);
-	buff->allocateBuffer(mesh.mNumTriangles*3, 0, true);
-
-	LLStrider<LLVector3> pos;
-	LLStrider<LLVector3> norm;
+	res.mPositions.clear();
+	res.mNormals.clear();
 	
-	buff->getVertexStrider(pos);
-	buff->getNormalStrider(norm);
-
 	const F32* v = mesh.mVertexBase;
-	
+
 	if (mesh.mIndexType == LLCDMeshData::INT_16)
 	{
 		U16* idx = (U16*) mesh.mIndexBase;
@@ -139,13 +133,13 @@ LLVertexBuffer* get_vertex_buffer_from_mesh(LLCDMeshData& mesh, F32 scale = 1.f)
 			LLVector3 n = (v1-v0)%(v2-v0);
 			n.normalize();
 
-			*pos++ = v0*scale;
-			*pos++ = v1*scale;
-			*pos++ = v2*scale;
+			res.mPositions.push_back(v0*scale);
+			res.mPositions.push_back(v1*scale);
+			res.mPositions.push_back(v2*scale);
 
-			*norm++ = n;
-			*norm++ = n;
-			*norm++ = n;			
+			res.mNormals.push_back(n);
+			res.mNormals.push_back(n);
+			res.mNormals.push_back(n);			
 		}
 	}
 	else
@@ -166,17 +160,15 @@ LLVertexBuffer* get_vertex_buffer_from_mesh(LLCDMeshData& mesh, F32 scale = 1.f)
 			LLVector3 n = (v1-v0)%(v2-v0);
 			n.normalize();
 
-			*(pos++) = v0*scale;
-			*(pos++) = v1*scale;
-			*(pos++) = v2*scale;
+			res.mPositions.push_back(v0*scale);
+			res.mPositions.push_back(v1*scale);
+			res.mPositions.push_back(v2*scale);
 
-			*(norm++) = n;
-			*(norm++) = n;
-			*(norm++) = n;			
+			res.mNormals.push_back(n);
+			res.mNormals.push_back(n);
+			res.mNormals.push_back(n);			
 		}
 	}
-
-	return buff;
 }
 
 S32 LLMeshRepoThread::sActiveHeaderRequests = 0;
@@ -1139,119 +1131,8 @@ bool LLMeshRepoThread::decompositionReceived(const LLUUID& mesh_id, U8* data, S3
 	}
 	
 	{
-		LLMeshDecomposition* d = new LLMeshDecomposition();
+		LLModel::Decomposition* d = new LLModel::Decomposition(decomp);
 		d->mMeshID = mesh_id;
-
-		if (decomp.has("HullList"))
-		{
-			// updated for const-correctness. gcc is picky about this type of thing - Nyx
-			const LLSD::Binary& hulls = decomp["HullList"].asBinary();
-			const LLSD::Binary& position = decomp["Position"].asBinary();
-
-			U16* p = (U16*) &position[0];
-
-			d->mHull.resize(hulls.size());
-
-			LLVector3 min;
-			LLVector3 max;
-			LLVector3 range;
-
-			min.setValue(decomp["Min"]);
-			max.setValue(decomp["Max"]);
-			range = max-min;
-
-			for (U32 i = 0; i < hulls.size(); ++i)
-			{
-				U16 count = (hulls[i] == 0) ? 256 : hulls[i];
-				
-				for (U32 j = 0; j < count; ++j)
-				{
-					d->mHull[i].push_back(LLVector3(
-						(F32) p[0]/65535.f*range.mV[0]+min.mV[0],
-						(F32) p[1]/65535.f*range.mV[1]+min.mV[1],
-						(F32) p[2]/65535.f*range.mV[2]+min.mV[2]));
-					p += 3;
-				}		 
-
-			}
-				
-			//get mesh for decomposition
-			for (U32 i = 0; i < d->mHull.size(); ++i)
-			{
-				LLCDHull hull;
-				hull.mNumVertices = d->mHull[i].size();
-				hull.mVertexBase = d->mHull[i][0].mV;
-				hull.mVertexStrideBytes = 12;
-
-				LLCDMeshData mesh;
-				LLCDResult res = LLCD_OK;
-				if (LLConvexDecomposition::getInstance() != NULL)
-				{
-					res = LLConvexDecomposition::getInstance()->getMeshFromHull(&hull, &mesh);
-				}
-				if (res != LLCD_OK)
-				{
-					llwarns << "could not get mesh from hull from convex decomposition lib." << llendl;
-					return false;
-				}
-
-
-				d->mMesh.push_back(get_vertex_buffer_from_mesh(mesh));
-			}	
-		}
-
-		if (decomp.has("Hull"))
-		{
-			const LLSD::Binary& position = decomp["Hull"].asBinary();
-
-			U16* p = (U16*) &position[0];
-
-			LLVector3 min;
-			LLVector3 max;
-			LLVector3 range;
-
-			min.setValue(decomp["Min"]);
-			max.setValue(decomp["Max"]);
-			range = max-min;
-
-			U16 count = position.size()/6;
-			
-			for (U32 j = 0; j < count; ++j)
-			{
-				d->mBaseHull.push_back(LLVector3(
-					(F32) p[0]/65535.f*range.mV[0]+min.mV[0],
-					(F32) p[1]/65535.f*range.mV[1]+min.mV[1],
-					(F32) p[2]/65535.f*range.mV[2]+min.mV[2]));
-				p += 3;
-			}		 
-				
-			//get mesh for decomposition
-			LLCDHull hull;
-			hull.mNumVertices = d->mBaseHull.size();
-			hull.mVertexBase = d->mBaseHull[0].mV;
-			hull.mVertexStrideBytes = 12;
-
-			LLCDMeshData mesh;
-			LLCDResult res = LLCD_OK;
-			if (LLConvexDecomposition::getInstance() != NULL)
-			{
-				res = LLConvexDecomposition::getInstance()->getMeshFromHull(&hull, &mesh);
-			}
-			if (res != LLCD_OK)
-			{
-				llwarns << "could not get mesh from hull from convex decomposition lib." << llendl;
-				return false;
-			}
-
-			d->mBaseHullMesh = get_vertex_buffer_from_mesh(mesh);
-		}
-		else
-		{
-			//empty vertex buffer to indicate decomposition has been fetched
-			//but contains no base hull
-			d->mBaseHullMesh = new LLVertexBuffer(0, 0);
-		}
-
 		mDecompositionQ.push(d);
 	}
 
@@ -1262,12 +1143,12 @@ bool LLMeshRepoThread::physicsShapeReceived(const LLUUID& mesh_id, U8* data, S32
 {
 	LLSD physics_shape;
 
-	LLMeshDecomposition* d = new LLMeshDecomposition();
+	LLModel::Decomposition* d = new LLModel::Decomposition();
 	d->mMeshID = mesh_id;
 
 	if (data == NULL)
 	{ //no data, no physics shape exists
-		d->mPhysicsShapeMesh = new LLVertexBuffer(0,0);
+		d->mPhysicsShapeMesh.clear();
 	}
 	else
 	{
@@ -1291,33 +1172,22 @@ bool LLMeshRepoThread::physicsShapeReceived(const LLUUID& mesh_id, U8* data, S32
 				index_count += face.mNumIndices;
 			}
 
-			d->mPhysicsShapeMesh = new LLVertexBuffer(LLVertexBuffer::MAP_VERTEX, 0);
-
-			d->mPhysicsShapeMesh->allocateBuffer(vertex_count, index_count, true);
+			d->mPhysicsShapeMesh.clear();
 
-			LLStrider<LLVector3> pos;
-			LLStrider<U16> idx;
+			std::vector<LLVector3>& pos = d->mPhysicsShapeMesh.mPositions;
+			std::vector<LLVector3>& norm = d->mPhysicsShapeMesh.mNormals;
 
-			d->mPhysicsShapeMesh->getVertexStrider(pos);
-			d->mPhysicsShapeMesh->getIndexStrider(idx);
-
-			S32 idx_offset = 0;
 			for (S32 i = 0; i < volume->getNumVolumeFaces(); ++i)
 			{
 				const LLVolumeFace& face = volume->getVolumeFace(i);
-				if (idx_offset + face.mNumIndices > 65535)
-				{ //avoid 16-bit index overflow
-					continue;
-				}
-
-				LLVector4a::memcpyNonAliased16(pos[idx_offset].mV, face.mPositions[0].getF32ptr(), face.mNumVertices*sizeof(LLVector4a));
 			
 				for (S32 i = 0; i < face.mNumIndices; ++i)
 				{
-					*idx++ = face.mIndices[i] + idx_offset;
-				}
+					U16 idx = face.mIndices[i];
 
-				idx_offset += face.mNumVertices;
+					pos.push_back(LLVector3(face.mPositions[idx].getF32ptr()));
+					norm.push_back(LLVector3(face.mNormals[idx].getF32ptr()));				
+				}			
 			}
 		}
 	}
@@ -2428,33 +2298,7 @@ void LLMeshRepository::notifySkinInfoReceived(LLMeshSkinInfo& info)
 	mLoadingSkins.erase(info.mMeshID);
 }
 
-void LLMeshDecomposition::merge(const LLMeshDecomposition* rhs)
-{
-	if (!rhs)
-	{
-		return;
-	}
-
-	if (mMeshID != rhs->mMeshID)
-	{
-		llerrs << "Attempted to merge with decomposition of some other mesh." << llendl;
-	}
-
-	if (mBaseHull.empty())
-	{ //take base hull and decomposition from rhs
-		mHull = rhs->mHull;
-		mBaseHull = rhs->mBaseHull;
-		mMesh = rhs->mMesh;
-		mBaseHullMesh = rhs->mBaseHullMesh;
-	}
-
-	if (mPhysicsShapeMesh.isNull())
-	{ //take physics shape mesh from rhs
-		mPhysicsShapeMesh = rhs->mPhysicsShapeMesh;
-	}
-}
-
-void LLMeshRepository::notifyDecompositionReceived(LLMeshDecomposition* decomp)
+void LLMeshRepository::notifyDecompositionReceived(LLModel::Decomposition* decomp)
 {
 	decomposition_map::iterator iter = mDecompositionMap.find(decomp->mMeshID);
 	if (iter == mDecompositionMap.end())
@@ -2596,7 +2440,7 @@ void LLMeshRepository::fetchPhysicsShape(const LLUUID& mesh_id)
 {
 	if (mesh_id.notNull())
 	{
-		LLMeshDecomposition* decomp = NULL;
+		LLModel::Decomposition* decomp = NULL;
 		decomposition_map::iterator iter = mDecompositionMap.find(mesh_id);
 		if (iter != mDecompositionMap.end())
 		{
@@ -2604,7 +2448,7 @@ void LLMeshRepository::fetchPhysicsShape(const LLUUID& mesh_id)
 		}
 		
 		//decomposition block hasn't been fetched yet
-		if (!decomp || decomp->mPhysicsShapeMesh.isNull())
+		if (!decomp || decomp->mPhysicsShapeMesh.empty())
 		{
 			LLMutexLock lock(mMeshMutex);
 			//add volume to list of loading meshes
@@ -2619,9 +2463,9 @@ void LLMeshRepository::fetchPhysicsShape(const LLUUID& mesh_id)
 
 }
 
-const LLMeshDecomposition* LLMeshRepository::getDecomposition(const LLUUID& mesh_id)
+LLModel::Decomposition* LLMeshRepository::getDecomposition(const LLUUID& mesh_id)
 {
-	LLMeshDecomposition* ret = NULL;
+	LLModel::Decomposition* ret = NULL;
 
 	if (mesh_id.notNull())
 	{
@@ -2632,7 +2476,7 @@ const LLMeshDecomposition* LLMeshRepository::getDecomposition(const LLUUID& mesh
 		}
 		
 		//decomposition block hasn't been fetched yet
-		if (!ret || ret->mBaseHullMesh.isNull())
+		if (!ret || ret->mBaseHullMesh.empty())
 		{
 			LLMutexLock lock(mMeshMutex);
 			//add volume to list of loading meshes
@@ -2735,8 +2579,8 @@ void LLMeshUploadThread::sendCostRequest(LLMeshUploadData& data)
 
 	LLModel::convex_hull_decomposition& decomp =
 		data.mModel[LLModel::LOD_PHYSICS].notNull() ? 
-		data.mModel[LLModel::LOD_PHYSICS]->mConvexHullDecomp : 
-		data.mBaseModel->mConvexHullDecomp;
+		data.mModel[LLModel::LOD_PHYSICS]->mPhysics.mHull : 
+		data.mBaseModel->mPhysics.mHull;
 
 	LLModel::hull dummy_hull;
 
@@ -2836,8 +2680,8 @@ void LLMeshUploadThread::doUploadModel(LLMeshUploadData& data)
 
 		LLModel::convex_hull_decomposition& decomp =
 			data.mModel[LLModel::LOD_PHYSICS].notNull() ? 
-			data.mModel[LLModel::LOD_PHYSICS]->mConvexHullDecomp : 
-			data.mBaseModel->mConvexHullDecomp;
+			data.mModel[LLModel::LOD_PHYSICS]->mPhysics.mHull : 
+			data.mBaseModel->mPhysics.mHull;
 
 		LLModel::writeModel(
 			ostr,  
@@ -3355,7 +3199,7 @@ void LLPhysicsDecomp::doDecomposition()
 			// if LLConvexDecomposition is a stub, num_hulls should have been set to 0 above, and we should not reach this code
 			LLConvexDecomposition::getInstance()->getMeshFromStage(stage, i, &mesh);
 
-			mCurRequest->mHullMesh[i] = get_vertex_buffer_from_mesh(mesh);
+			get_vertex_buffer_from_mesh(mesh, mCurRequest->mHullMesh[i]);
 			
 			mMutex->lock();
 			mCurRequest->mHull[i] = p;
@@ -3628,3 +3472,46 @@ LLSD LLImportMaterial::asLLSD()
 	
 	return ret;
 }
+
+void LLMeshRepository::buildPhysicsMesh(LLModel::Decomposition& decomp)
+{
+	decomp.mMesh.resize(decomp.mHull.size());

+

+	for (U32 i = 0; i < decomp.mHull.size(); ++i)

+	{

+		LLCDHull hull;
+		hull.mNumVertices = decomp.mHull[i].size();
+		hull.mVertexBase = decomp.mHull[i][0].mV;
+		hull.mVertexStrideBytes = 12;
+
+		LLCDMeshData mesh;
+		LLCDResult res = LLCD_OK;
+		if (LLConvexDecomposition::getInstance() != NULL)
+		{
+			res = LLConvexDecomposition::getInstance()->getMeshFromHull(&hull, &mesh);
+		}
+		if (res == LLCD_OK)
+		{
+			get_vertex_buffer_from_mesh(mesh, decomp.mMesh[i]);

+		}

+	}
+
+	if (!decomp.mBaseHull.empty() && decomp.mBaseHullMesh.empty())
+	{ //get mesh for base hull
+		LLCDHull hull;
+		hull.mNumVertices = decomp.mBaseHull.size();
+		hull.mVertexBase = decomp.mBaseHull[0].mV;
+		hull.mVertexStrideBytes = 12;
+
+		LLCDMeshData mesh;
+		LLCDResult res = LLCD_OK;
+		if (LLConvexDecomposition::getInstance() != NULL)
+		{
+			res = LLConvexDecomposition::getInstance()->getMeshFromHull(&hull, &mesh);
+		}
+		if (res == LLCD_OK)
+		{
+			get_vertex_buffer_from_mesh(mesh, decomp.mBaseHullMesh);
+		}
+	}
+}
diff --git a/indra/newview/llmeshrepository.h b/indra/newview/llmeshrepository.h
index 5960fe2949..31c2049c32 100644
--- a/indra/newview/llmeshrepository.h
+++ b/indra/newview/llmeshrepository.h
@@ -132,22 +132,6 @@ public:
 	LLSD asLLSD();
 };
 
-class LLMeshDecomposition
-{
-public:
-	LLMeshDecomposition() { }
-
-	void merge(const LLMeshDecomposition* rhs);
-
-	LLUUID mMeshID;
-	LLModel::convex_hull_decomposition mHull;
-	LLModel::hull mBaseHull;
-
-	std::vector<LLPointer<LLVertexBuffer> > mMesh;
-	LLPointer<LLVertexBuffer> mBaseHullMesh;
-	LLPointer<LLVertexBuffer> mPhysicsShapeMesh;
-};
-
 class LLPhysicsDecomp : public LLThread
 {
 public:
@@ -166,7 +150,7 @@ public:
 				
 		//output state
 		std::string mStatusMessage;
-		std::vector<LLPointer<LLVertexBuffer> > mHullMesh;
+		std::vector<LLModel::PhysicsMesh> mHullMesh;
 		LLModel::convex_hull_decomposition mHull;
 		
 		//status message callback, called from decomposition thread
@@ -301,7 +285,7 @@ public:
 	std::set<LLUUID> mPhysicsShapeRequests;
 
 	//queue of completed Decomposition info requests
-	std::queue<LLMeshDecomposition*> mDecompositionQ;
+	std::queue<LLModel::Decomposition*> mDecompositionQ;
 
 	//queue of requested headers
 	std::queue<HeaderRequest> mHeaderReqQ;
@@ -465,17 +449,19 @@ public:
 	void notifyMeshLoaded(const LLVolumeParams& mesh_params, LLVolume* volume);
 	void notifyMeshUnavailable(const LLVolumeParams& mesh_params, S32 lod);
 	void notifySkinInfoReceived(LLMeshSkinInfo& info);
-	void notifyDecompositionReceived(LLMeshDecomposition* info);
+	void notifyDecompositionReceived(LLModel::Decomposition* info);
 
 	S32 getActualMeshLOD(const LLVolumeParams& mesh_params, S32 lod);
 	U32 calcResourceCost(LLSD& header);
 	U32 getResourceCost(const LLUUID& mesh_params);
 	const LLMeshSkinInfo* getSkinInfo(const LLUUID& mesh_id);
-	const LLMeshDecomposition* getDecomposition(const LLUUID& mesh_id);
+	LLModel::Decomposition* getDecomposition(const LLUUID& mesh_id);
 	void fetchPhysicsShape(const LLUUID& mesh_id);
 	bool hasPhysicsShape(const LLUUID& mesh_id);
 	
 	void buildHull(const LLVolumeParams& params, S32 detail);
+	void buildPhysicsMesh(LLModel::Decomposition& decomp);
+
 	const LLSD& getMeshHeader(const LLUUID& mesh_id);
 
 	void uploadModel(std::vector<LLModelInstance>& data, LLVector3& scale, bool upload_textures,
@@ -489,7 +475,7 @@ public:
 	typedef std::map<LLUUID, LLMeshSkinInfo> skin_map;
 	skin_map mSkinMap;
 
-	typedef std::map<LLUUID, LLMeshDecomposition*> decomposition_map;
+	typedef std::map<LLUUID, LLModel::Decomposition*> decomposition_map;
 	decomposition_map mDecompositionMap;
 
 	LLMutex*					mMeshMutex;
diff --git a/indra/newview/llspatialpartition.cpp b/indra/newview/llspatialpartition.cpp
index 5e7af6bbb3..65f7d299bc 100644
--- a/indra/newview/llspatialpartition.cpp
+++ b/indra/newview/llspatialpartition.cpp
@@ -2961,31 +2961,21 @@ S32 get_physics_detail(const LLVolumeParams& volume_params, const LLVector3& sca
 void renderMeshBaseHull(LLVOVolume* volume, U32 data_mask, LLColor4& color, LLColor4& line_color)
 {
 	LLUUID mesh_id = volume->getVolume()->getParams().getSculptID();
-	const LLMeshDecomposition* decomp = gMeshRepo.getDecomposition(mesh_id);
+	LLModel::Decomposition* decomp = gMeshRepo.getDecomposition(mesh_id);
 
 	const LLVector3 center(0,0,0);
 	const LLVector3 size(0.25f,0.25f,0.25f);
 
 	if (decomp)
 	{		
-		LLVertexBuffer* buff = decomp->mBaseHullMesh;
-
-		if (buff && buff->getNumVerts() > 0)
+		if (!decomp->mBaseHullMesh.empty())
 		{
-			buff->setBuffer(data_mask);
-
-		/*	glPolygonMode(GL_FRONT_AND_BACK, GL_LINE);
-			glColor4fv(line_color.mV);
-			buff->drawArrays(LLRender::TRIANGLES, 0, buff->getNumVerts());
-			glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);*/
-
-			{
-				glColor4fv(color.mV);
-				buff->drawArrays(LLRender::TRIANGLES, 0, buff->getNumVerts());
-			}
+			glColor4fv(color.mV);
+			LLVertexBuffer::drawArrays(LLRender::TRIANGLES, decomp->mBaseHullMesh.mPositions, decomp->mBaseHullMesh.mNormals);
 		}
 		else
 		{
+			gMeshRepo.buildPhysicsMesh(*decomp);
 			gGL.color3f(0,1,1);
 			drawBoxOutline(center, size);
 		}
@@ -2998,19 +2988,16 @@ void renderMeshBaseHull(LLVOVolume* volume, U32 data_mask, LLColor4& color, LLCo
 	}
 }
 
-void render_hull(LLVertexBuffer* buff, U32 data_mask, const LLColor4& color, const LLColor4& line_color)
+void render_hull(LLModel::PhysicsMesh& mesh, const LLColor4& color, const LLColor4& line_color)
 {
-	buff->setBuffer(data_mask);
-
 	glColor4fv(color.mV);
-	buff->drawArrays(LLRender::TRIANGLES, 0, buff->getNumVerts());
-
+	LLVertexBuffer::drawArrays(LLRender::TRIANGLES, mesh.mPositions, mesh.mNormals);
 	LLGLEnable offset(GL_POLYGON_OFFSET_LINE);
 	glPolygonMode(GL_FRONT_AND_BACK, GL_LINE);
 	glPolygonOffset(3.f, 3.f);
 	glLineWidth(3.f);
 	glColor4fv(line_color.mV);
-	buff->drawArrays(LLRender::TRIANGLES, 0, buff->getNumVerts());
+	LLVertexBuffer::drawArrays(LLRender::TRIANGLES, mesh.mPositions, mesh.mNormals);
 	glLineWidth(1.f);
 	glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
 }
@@ -3075,7 +3062,7 @@ void renderPhysicsShape(LLDrawable* drawable, LLVOVolume* volume)
 	if (type == LLPhysicsShapeBuilderUtil::PhysicsShapeSpecification::USER_MESH)
 	{
 		LLUUID mesh_id = volume->getVolume()->getParams().getSculptID();
-		const LLMeshDecomposition* decomp = gMeshRepo.getDecomposition(mesh_id);
+		LLModel::Decomposition* decomp = gMeshRepo.getDecomposition(mesh_id);
 			
 		if (decomp)
 		{ //render a physics based mesh
@@ -3084,27 +3071,33 @@ void renderPhysicsShape(LLDrawable* drawable, LLVOVolume* volume)
 
 			if (!decomp->mHull.empty())
 			{ //decomposition exists, use that
-				for (U32 i = 0; i < decomp->mHull.size(); ++i)
+
+				if (decomp->mMesh.empty())
+				{
+					gMeshRepo.buildPhysicsMesh(*decomp);
+				}
+
+				for (U32 i = 0; i < decomp->mMesh.size(); ++i)
 				{		
-					render_hull(decomp->mMesh[i], data_mask, color, line_color);
+					render_hull(decomp->mMesh[i], color, line_color);
 				}
 			}
-			else if (decomp->mPhysicsShapeMesh.notNull() && decomp->mPhysicsShapeMesh->getNumVerts() > 0)
+			else if (!decomp->mPhysicsShapeMesh.empty())
 			{ 
 				//decomp has physics mesh, render that mesh
 				glColor4fv(color.mV);
-				pushBufferVerts(decomp->mPhysicsShapeMesh, data_mask);
-				
+				LLVertexBuffer::drawArrays(LLRender::TRIANGLES, decomp->mPhysicsShapeMesh.mPositions, decomp->mPhysicsShapeMesh.mNormals);
+								
 				glPolygonMode(GL_FRONT_AND_BACK, GL_LINE);
 				glColor4fv(line_color.mV);
-				pushBufferVerts(decomp->mPhysicsShapeMesh, data_mask);
+				LLVertexBuffer::drawArrays(LLRender::TRIANGLES, decomp->mPhysicsShapeMesh.mPositions, decomp->mPhysicsShapeMesh.mNormals);
 				glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
 			}
 			else
 			{ //no mesh or decomposition, render base hull
 				renderMeshBaseHull(volume, data_mask, color, line_color);
 
-				if (decomp->mPhysicsShapeMesh.isNull())
+				if (decomp->mPhysicsShapeMesh.empty())
 				{
 					//attempt to fetch physics shape mesh if available
 					gMeshRepo.fetchPhysicsShape(mesh_id);