Remove foot shadows from llvoavatar and add terse update to LLViewerJointMesh::updateFaceData.

(transplanted from 14545d24820e032279c81cb386dd043eeee625f7)

6 files changed, 110 insertions, 255 deletions

diff --git a/indra/newview/llviewerjoint.cpp b/indra/newview/llviewerjoint.cpp
index 95f05b5f5f..8f2006b431 100644
--- a/indra/newview/llviewerjoint.cpp
+++ b/indra/newview/llviewerjoint.cpp
@@ -440,13 +440,13 @@ void LLViewerJoint::updateFaceSizes(U32 &num_vertices, U32& num_indices, F32 pix
 	}
 }
 
-void LLViewerJoint::updateFaceData(LLFace *face, F32 pixel_area, BOOL damp_wind)
+void LLViewerJoint::updateFaceData(LLFace *face, F32 pixel_area, BOOL damp_wind, bool terse_update)
 {
 	for (child_list_t::iterator iter = mChildren.begin();
 		 iter != mChildren.end(); ++iter)
 	{
 		LLViewerJoint* joint = (LLViewerJoint*)(*iter);
-		joint->updateFaceData(face, pixel_area, damp_wind);
+		joint->updateFaceData(face, pixel_area, damp_wind, terse_update);
 	}
 }
 
diff --git a/indra/newview/llviewerjoint.h b/indra/newview/llviewerjoint.h
index 0d3092a044..67bd7786c3 100644
--- a/indra/newview/llviewerjoint.h
+++ b/indra/newview/llviewerjoint.h
@@ -126,7 +126,7 @@ public:
 	PickName getPickName() { return mPickName; }
 
 	virtual void updateFaceSizes(U32 &num_vertices, U32& num_indices, F32 pixel_area);
-	virtual void updateFaceData(LLFace *face, F32 pixel_area, BOOL damp_wind = FALSE);
+	virtual void updateFaceData(LLFace *face, F32 pixel_area, BOOL damp_wind = FALSE, bool terse_update = false);
 	virtual BOOL updateLOD(F32 pixel_area, BOOL activate);
 	virtual void updateJointGeometry();
 	virtual void dump();
diff --git a/indra/newview/llviewerjointmesh.cpp b/indra/newview/llviewerjointmesh.cpp
index c65946a574..6be7c442ef 100644
--- a/indra/newview/llviewerjointmesh.cpp
+++ b/indra/newview/llviewerjointmesh.cpp
@@ -669,7 +669,7 @@ void LLViewerJointMesh::updateFaceSizes(U32 &num_vertices, U32& num_indices, F32
 //-----------------------------------------------------------------------------
 static LLFastTimer::DeclareTimer FTM_AVATAR_FACE("Avatar Face");
 
-void LLViewerJointMesh::updateFaceData(LLFace *face, F32 pixel_area, BOOL damp_wind)
+void LLViewerJointMesh::updateFaceData(LLFace *face, F32 pixel_area, BOOL damp_wind, bool terse_update)
 {
 	mFace = face;
 
@@ -704,22 +704,6 @@ void LLViewerJointMesh::updateFaceData(LLFace *face, F32 pixel_area, BOOL damp_w
 			vertex_weightsp += mMesh->mFaceVertexOffset;
 			clothing_weightsp += mMesh->mFaceVertexOffset;
 
-			U32* __restrict v = (U32*) verticesp.get();
-			const U32 vert_skip = verticesp.getSkip()/sizeof(U32);
-
-			U32* __restrict tc = (U32*) tex_coordsp.get();
-			const U32 tc_skip = tex_coordsp.getSkip()/sizeof(U32);
-
-			U32* __restrict n = (U32*) normalsp.get();
-			const U32 n_skip = normalsp.getSkip()/sizeof(U32);
-			
-			U32* __restrict vw = (U32*) vertex_weightsp.get();
-			const U32 vw_skip = vertex_weightsp.getSkip()/sizeof(U32);
-
-
-			U32* __restrict cw = (U32*) clothing_weightsp.get();
-			const U32 cw_skip = vertex_weightsp.getSkip()/sizeof(U32);
-
 			const U32* __restrict coords = (U32*) mMesh->getCoords();
 			const U32* __restrict tex_coords = (U32*) mMesh->getTexCoords();
 			const U32* __restrict normals = (U32*) mMesh->getNormals();
@@ -729,49 +713,84 @@ void LLViewerJointMesh::updateFaceData(LLFace *face, F32 pixel_area, BOOL damp_w
 			const U32 num_verts = mMesh->getNumVertices();
 
 			U32 i = 0;
-			do
+
+			const U32 skip = verticesp.getSkip()/sizeof(U32);
+
+			U32* __restrict v = (U32*) verticesp.get();
+			U32* __restrict n = (U32*) normalsp.get();
+			
+			if (terse_update)
 			{
-				v[0] = *(coords++); 
-				v[1] = *(coords++); 
-				v[2] = *(coords++);
-				v += vert_skip;
-
-				tc[0] = *(tex_coords++); 
-				tc[1] = *(tex_coords++);
-				tc += tc_skip;
-
-				n[0] = *(normals++); 
-				n[1] = *(normals++);
-				n[2] = *(normals++);
-				n += n_skip;
-
-				vw[0] = *(weights++);
-				vw += vw_skip;
-
-				cw[0] = *(cloth_weights++);
-				cw[1] = *(cloth_weights++);
-				cw[2] = *(cloth_weights++);
-				cw[3] = *(cloth_weights++);
-				cw += cw_skip;
+				for (S32 i = num_verts; i > 0; --i)
+				{
+					//morph target application only, only update positions and normals
+					v[0] = coords[0]; 
+					v[1] = coords[1]; 
+					v[2] = coords[2];		
+					coords += 3;
+					v += skip;
+				}
+
+				for (S32 i = num_verts; i > 0; --i)
+				{
+					n[0] = normals[0]; 
+					n[1] = normals[1];
+					n[2] = normals[2];
+					normals += 3;
+					n += skip;
+				}
 			}
-			while (++i < num_verts);
+			else
+				{
 
-			const U32 idx_count = mMesh->getNumFaces()*3;
+				U32* __restrict tc = (U32*) tex_coordsp.get();
+				U32* __restrict vw = (U32*) vertex_weightsp.get();
+				U32* __restrict cw = (U32*) clothing_weightsp.get();
+				
+				do
+				{
+					v[0] = *(coords++); 
+					v[1] = *(coords++); 
+					v[2] = *(coords++);
+					v += skip;
+
+					tc[0] = *(tex_coords++); 
+					tc[1] = *(tex_coords++);
+					tc += skip;
+
+					n[0] = *(normals++); 
+					n[1] = *(normals++);
+					n[2] = *(normals++);
+					n += skip;
+
+					vw[0] = *(weights++);
+					vw += skip;
+
+					cw[0] = *(cloth_weights++);
+					cw[1] = *(cloth_weights++);
+					cw[2] = *(cloth_weights++);
+					cw[3] = *(cloth_weights++);
+					cw += skip;
+				}
+				while (++i < num_verts);
 
-			indicesp += mMesh->mFaceIndexOffset;
+				const U32 idx_count = mMesh->getNumFaces()*3;
 
-			U16* __restrict idx = indicesp.get();
-			S32* __restrict src_idx = (S32*) mMesh->getFaces();
+				indicesp += mMesh->mFaceIndexOffset;
 
-			i = 0;
+				U16* __restrict idx = indicesp.get();
+				S32* __restrict src_idx = (S32*) mMesh->getFaces();
 
-			const S32 offset = (S32) mMesh->mFaceVertexOffset;
+				i = 0;
 
-			do
-			{
-				*(idx++) = *(src_idx++)+offset;
+				const S32 offset = (S32) mMesh->mFaceVertexOffset;
+
+				do
+				{
+					*(idx++) = *(src_idx++)+offset;
+				}
+				while (++i < idx_count);
 			}
-			while (++i < idx_count);
 		}
 	}
 }
diff --git a/indra/newview/llviewerjointmesh.h b/indra/newview/llviewerjointmesh.h
index d62b0ada85..3b8d9c82b8 100644
--- a/indra/newview/llviewerjointmesh.h
+++ b/indra/newview/llviewerjointmesh.h
@@ -140,7 +140,7 @@ public:
 	/*virtual*/ U32 drawShape( F32 pixelArea, BOOL first_pass, BOOL is_dummy );
 
 	/*virtual*/ void updateFaceSizes(U32 &num_vertices, U32& num_indices, F32 pixel_area);
-	/*virtual*/ void updateFaceData(LLFace *face, F32 pixel_area, BOOL damp_wind = FALSE);
+	/*virtual*/ void updateFaceData(LLFace *face, F32 pixel_area, BOOL damp_wind = FALSE, bool terse_update = false);
 	/*virtual*/ BOOL updateLOD(F32 pixel_area, BOOL activate);
 	/*virtual*/ void updateJointGeometry();
 	/*virtual*/ void dump();
diff --git a/indra/newview/llvoavatar.cpp b/indra/newview/llvoavatar.cpp
index 5100f4e59a..f89139dcd8 100644
--- a/indra/newview/llvoavatar.cpp
+++ b/indra/newview/llvoavatar.cpp
@@ -694,10 +694,8 @@ LLVOAvatar::LLVOAvatar(const LLUUID& id,
 		mBakedTextureDatas[i].mTextureIndex = LLVOAvatarDictionary::bakedToLocalTextureIndex((EBakedTextureIndex)i);
 	}
 
-	mDirtyMesh = TRUE;	// Dirty geometry, need to regenerate.
+	mDirtyMesh = 2;	// Dirty geometry, need to regenerate.
 	mMeshTexturesDirty = FALSE;
-	mShadow0Facep = NULL;
-	mShadow1Facep = NULL;
 	mHeadp = NULL;
 
 	mIsBuilt = FALSE;
@@ -733,12 +731,6 @@ LLVOAvatar::LLVOAvatar(const LLUUID& id,
 
 	mRippleTimeLast = 0.f;
 
-	mShadowImagep = LLViewerTextureManager::getFetchedTextureFromFile("foot_shadow.j2c");
-	
-	// GL NOT ACTIVE HERE
-	//gGL.getTexUnit(0)->bind(mShadowImagep.get());
-	//mShadowImagep->setAddressMode(LLTexUnit::TAM_CLAMP);
-	
 	mInAir = FALSE;
 
 	mStepOnLand = TRUE;
@@ -1924,7 +1916,7 @@ void LLVOAvatar::updateMeshData()
 			}
 			if(num_vertices < 1)//skip empty meshes
 			{
-				break ;
+				continue ;
 			}
 			if(last_v_num > 0)//put the last inserted part into next vertex buffer.
 			{
@@ -1946,6 +1938,8 @@ void LLVOAvatar::updateMeshData()
 			// resize immediately
 			facep->setSize(num_vertices, num_indices);
 
+			bool terse_update = false;
+
 			if(facep->mVertexBuffer.isNull())
 			{
 				facep->mVertexBuffer = new LLVertexBufferAvatar();
@@ -1953,7 +1947,15 @@ void LLVOAvatar::updateMeshData()
 			}
 			else
 			{
-				facep->mVertexBuffer->resizeBuffer(num_vertices, num_indices) ;
+				if (facep->mVertexBuffer->getRequestedIndices() == num_indices &&
+					facep->mVertexBuffer->getRequestedVerts() == num_vertices)
+				{
+					terse_update = true;
+				}
+				else
+				{
+					facep->mVertexBuffer->resizeBuffer(num_vertices, num_indices) ;
+				}
 			}
 		
 			facep->setGeomIndex(0);
@@ -1968,7 +1970,7 @@ void LLVOAvatar::updateMeshData()
 
 			for(S32 k = j ; k < part_index ; k++)
 			{
-				mMeshLOD[k]->updateFaceData(facep, mAdjustedPixelArea, k == MESH_ID_HAIR);
+				mMeshLOD[k]->updateFaceData(facep, mAdjustedPixelArea, k == MESH_ID_HAIR, terse_update);
 			}
 
 			stop_glerror();
@@ -2321,12 +2323,6 @@ void LLVOAvatar::idleUpdateMisc(bool detailed_update)
 	LLJoint::sNumUpdates = 0;
 	LLJoint::sNumTouches = 0;
 
-	// *NOTE: this is necessary for the floating name text above your head.
-	if (mDrawable.notNull())
-	{
-		gPipeline.markRebuild(mDrawable, LLDrawable::REBUILD_SHADOW, TRUE);
-	}
-
 	BOOL visible = isVisible() || mNeedsAnimUpdate;
 
 	// update attachments positions
@@ -3654,12 +3650,19 @@ U32 LLVOAvatar::renderSkinned(EAvatarRenderPass pass)
 		return num_indices;
 	}
 
-	if (mDirtyMesh || mDrawable->isState(LLDrawable::REBUILD_GEOMETRY))
+	LLFace* face = mDrawable->getFace(0);
+
+	bool needs_rebuild = !face || face->mVertexBuffer.isNull();
+
+	if (needs_rebuild || mDirtyMesh || mDrawable->isState(LLDrawable::REBUILD_GEOMETRY))
 	{	//LOD changed or new mesh created, allocate new vertex buffer if needed
-		updateMeshData();
-		mDirtyMesh = FALSE;
-		mNeedsSkin = TRUE;
-		mDrawable->clearState(LLDrawable::REBUILD_GEOMETRY);
+		if (needs_rebuild || mDirtyMesh >= 2 || mVisibilityRank <= 4)
+		{
+			updateMeshData();
+			mDirtyMesh = 0;
+			mNeedsSkin = TRUE;
+			mDrawable->clearState(LLDrawable::REBUILD_GEOMETRY);
+		}
 	}
 
 	if (LLViewerShaderMgr::instance()->getVertexShaderLevel(LLViewerShaderMgr::SHADER_AVATAR) <= 0)
@@ -3907,54 +3910,6 @@ U32 LLVOAvatar::renderRigid()
 	return num_indices;
 }
 
-U32 LLVOAvatar::renderFootShadows()
-{
-	U32 num_indices = 0;
-
-	if (!mIsBuilt)
-	{
-		return 0;
-	}
-
-	if (isSelf() && (!gAgent.needsRenderAvatar() || !gAgent.needsRenderHead()))
-	{
-		return 0;
-	}
-	
-	if (!mIsBuilt)
-	{
-		return 0;
-	}
-	
-	// Don't render foot shadows if your lower body is completely invisible.
-	// (non-humanoid avatars rule!)
-	if (!isTextureVisible(TEX_LOWER_BAKED))
-	{
-		return 0;
-	}
-
-	// Update the shadow, tractor, and text label geometry.
-	if (mDrawable->isState(LLDrawable::REBUILD_SHADOW) && !isImpostor())
-	{
-		updateShadowFaces();
-		mDrawable->clearState(LLDrawable::REBUILD_SHADOW);
-	}
-
-	U32 foot_mask = LLVertexBuffer::MAP_VERTEX |
-					LLVertexBuffer::MAP_TEXCOORD0;
-
-	LLGLDepthTest test(GL_TRUE, GL_FALSE);
-	//render foot shadows
-	LLGLEnable blend(GL_BLEND);
-	gGL.getTexUnit(0)->bind(mShadowImagep, TRUE);
-	glColor4fv(mShadow0Facep->getRenderColor().mV);
-	mShadow0Facep->renderIndexed(foot_mask);
-	glColor4fv(mShadow1Facep->getRenderColor().mV);
-	mShadow1Facep->renderIndexed(foot_mask);
-	
-	return num_indices;
-}
-
 U32 LLVOAvatar::renderImpostor(LLColor4U color, S32 diffuse_channel)
 {
 	if (!mImpostor.isComplete())
@@ -4075,11 +4030,6 @@ void LLVOAvatar::updateTextures()
 	{
 		setDebugText(llformat("%4.0f:%4.0f", fsqrtf(mMinPixelArea),fsqrtf(mMaxPixelArea)));
 	}	
-	
-	if( render_avatar )
-	{
-		mShadowImagep->addTextureStats(mPixelArea);
-	}
 }
 
 
@@ -5223,7 +5173,7 @@ BOOL LLVOAvatar::updateJointLODs()
  		if (res)
 		{
 			sNumLODChangesThisFrame++;
-			dirtyMesh();
+			dirtyMesh(2);
 			return TRUE;
 		}
 	}
@@ -5247,18 +5197,9 @@ LLDrawable *LLVOAvatar::createDrawable(LLPipeline *pipeline)
 	mDrawable->addFace(poolp, NULL);
 	mDrawable->setRenderType(LLPipeline::RENDER_TYPE_AVATAR);
 	
-	LLFace *facep;
-
-	// Add faces for the foot shadows
-	facep = mDrawable->addFace((LLFacePool*) NULL, mShadowImagep);
-	mShadow0Facep = facep;
-
-	facep = mDrawable->addFace((LLFacePool*) NULL, mShadowImagep);
-	mShadow1Facep = facep;
-
 	mNumInitFaces = mDrawable->getNumFaces() ;
 
-	dirtyMesh();
+	dirtyMesh(2);
 	return mDrawable;
 }
 
@@ -5298,107 +5239,6 @@ BOOL LLVOAvatar::updateGeometry(LLDrawable *drawable)
 }
 
 //-----------------------------------------------------------------------------
-// updateShadowFaces()
-//-----------------------------------------------------------------------------
-void LLVOAvatar::updateShadowFaces()
-{
-	LLFace *face0p = mShadow0Facep;
-	LLFace *face1p = mShadow1Facep;
-
-	//
-	// render avatar shadows
-	//
-	if (mInAir || mUpdatePeriod >= IMPOSTOR_PERIOD)
-	{
-		face0p->setSize(0, 0);
-		face1p->setSize(0, 0);
-		return;
-	}
-
-	LLSprite sprite(mShadowImagep.notNull() ? mShadowImagep->getID() : LLUUID::null);
-	sprite.setFollow(FALSE);
-	const F32 cos_angle = gSky.getSunDirection().mV[2];
-	F32 cos_elev = sqrt(1 - cos_angle * cos_angle);
-	if (cos_angle < 0) cos_elev = -cos_elev;
-	sprite.setSize(0.4f + cos_elev * 0.8f, 0.3f);
-	LLVector3 sun_vec = gSky.mVOSkyp ? gSky.mVOSkyp->getToSun() : LLVector3(0.f, 0.f, 0.f);
-
-	if (mShadowImagep->hasGLTexture())
-	{
-		LLVector3 normal;
-		LLVector3d shadow_pos;
-		LLVector3 shadow_pos_agent;
-		F32 foot_height;
-
-		if (mFootLeftp)
-		{
-			LLVector3 joint_world_pos = mFootLeftp->getWorldPosition();
-			// this only does a ray straight down from the foot, as our client-side ray-tracing is very limited now
-			// but we make an explicit ray trace call in expectation of future improvements
-			resolveRayCollisionAgent(gAgent.getPosGlobalFromAgent(joint_world_pos), 
-									 gAgent.getPosGlobalFromAgent(gSky.getSunDirection() + joint_world_pos), shadow_pos, normal);
-			shadow_pos_agent = gAgent.getPosAgentFromGlobal(shadow_pos);
-			foot_height = joint_world_pos.mV[VZ] - shadow_pos_agent.mV[VZ];
-
-			// Pull sprite in direction of surface normal
-			shadow_pos_agent += normal * SHADOW_OFFSET_AMT;
-
-			// Render sprite
-			sprite.setNormal(normal);
-			if (isSelf() && gAgentCamera.getCameraMode() == CAMERA_MODE_MOUSELOOK)
-			{
-				sprite.setColor(0.f, 0.f, 0.f, 0.f);
-			}
-			else
-			{
-				sprite.setColor(0.f, 0.f, 0.f, clamp_rescale(foot_height, MIN_SHADOW_HEIGHT, MAX_SHADOW_HEIGHT, 0.5f, 0.f));
-			}
-			sprite.setPosition(shadow_pos_agent);
-
-			LLVector3 foot_to_knee = mKneeLeftp->getWorldPosition() - joint_world_pos;
-			//foot_to_knee.normalize();
-			foot_to_knee -= projected_vec(foot_to_knee, sun_vec);
-			sprite.setYaw(azimuth(sun_vec - foot_to_knee));
-		
-			sprite.updateFace(*face0p);
-		}
-
-		if (mFootRightp)
-		{
-			LLVector3 joint_world_pos = mFootRightp->getWorldPosition();
-			// this only does a ray straight down from the foot, as our client-side ray-tracing is very limited now
-			// but we make an explicit ray trace call in expectation of future improvements
-			resolveRayCollisionAgent(gAgent.getPosGlobalFromAgent(joint_world_pos), 
-									 gAgent.getPosGlobalFromAgent(gSky.getSunDirection() + joint_world_pos), shadow_pos, normal);
-			shadow_pos_agent = gAgent.getPosAgentFromGlobal(shadow_pos);
-			foot_height = joint_world_pos.mV[VZ] - shadow_pos_agent.mV[VZ];
-
-			// Pull sprite in direction of surface normal
-			shadow_pos_agent += normal * SHADOW_OFFSET_AMT;
-
-			// Render sprite
-			sprite.setNormal(normal);
-			if (isSelf() && gAgentCamera.getCameraMode() == CAMERA_MODE_MOUSELOOK)
-			{
-				sprite.setColor(0.f, 0.f, 0.f, 0.f);
-			}
-			else
-			{
-				sprite.setColor(0.f, 0.f, 0.f, clamp_rescale(foot_height, MIN_SHADOW_HEIGHT, MAX_SHADOW_HEIGHT, 0.5f, 0.f));
-			}
-			sprite.setPosition(shadow_pos_agent);
-
-			LLVector3 foot_to_knee = mKneeRightp->getWorldPosition() - joint_world_pos;
-			//foot_to_knee.normalize();
-			foot_to_knee -= projected_vec(foot_to_knee, sun_vec);
-			sprite.setYaw(azimuth(sun_vec - foot_to_knee));
-	
-			sprite.updateFace(*face1p);
-		}
-	}
-}
-
-//-----------------------------------------------------------------------------
 // updateSexDependentLayerSets()
 //-----------------------------------------------------------------------------
 void LLVOAvatar::updateSexDependentLayerSets( BOOL upload_bake )
@@ -5411,9 +5251,9 @@ void LLVOAvatar::updateSexDependentLayerSets( BOOL upload_bake )
 //-----------------------------------------------------------------------------
 // dirtyMesh()
 //-----------------------------------------------------------------------------
-void LLVOAvatar::dirtyMesh()
+void LLVOAvatar::dirtyMesh(S32 priority)
 {
-	mDirtyMesh = TRUE;
+	mDirtyMesh = llmax(mDirtyMesh, priority);
 }
 
 //-----------------------------------------------------------------------------
@@ -7584,18 +7424,15 @@ BOOL LLVOAvatar::updateLOD()
 	BOOL res = updateJointLODs();
 
 	LLFace* facep = mDrawable->getFace(0);
-	if (facep->mVertexBuffer.isNull() ||
-		(LLVertexBuffer::sEnableVBOs &&
-		((facep->mVertexBuffer->getUsage() == GL_STATIC_DRAW ? TRUE : FALSE) !=
-		 (facep->getPool()->getVertexShaderLevel() > 0 ? TRUE : FALSE))))
+	if (facep->mVertexBuffer.isNull())
 	{
-		mDirtyMesh = TRUE;
+		dirtyMesh(2);
 	}
 
-	if (mDirtyMesh || mDrawable->isState(LLDrawable::REBUILD_GEOMETRY))
+	if (mDirtyMesh >= 2 || mDrawable->isState(LLDrawable::REBUILD_GEOMETRY))
 	{	//LOD changed or new mesh created, allocate new vertex buffer if needed
 		updateMeshData();
-		mDirtyMesh = FALSE;
+		mDirtyMesh = 0;
 		mNeedsSkin = TRUE;
 		mDrawable->clearState(LLDrawable::REBUILD_GEOMETRY);
 	}
diff --git a/indra/newview/llvoavatar.h b/indra/newview/llvoavatar.h
index 8da4c226ed..445bb03274 100644
--- a/indra/newview/llvoavatar.h
+++ b/indra/newview/llvoavatar.h
@@ -337,7 +337,6 @@ private:
  **/
 
 public:
-	U32 		renderFootShadows();
 	U32 		renderImpostor(LLColor4U color = LLColor4U(255,255,255,255), S32 diffuse_channel = 0);
 	U32 		renderRigid();
 	U32 		renderSkinned(EAvatarRenderPass pass);
@@ -565,13 +564,13 @@ private:
 public:
 	void 			updateMeshTextures();
 	void 			updateSexDependentLayerSets(BOOL upload_bake);
-	void 			dirtyMesh(); // Dirty the avatar mesh
+	void 			dirtyMesh(S32 priority = 1); // Dirty the avatar mesh
 	void 			updateMeshData();
 protected:
 	void 			releaseMeshData();
 	virtual void restoreMeshData();
 private:
-	BOOL 			mDirtyMesh;
+	S32 			mDirtyMesh; // 0 -- not dirty, 1 -- morphed, 2 -- LOD
 	BOOL			mMeshTexturesDirty;
 
 	typedef std::multimap<std::string, LLPolyMesh*> polymesh_map_t;