15 files changed, 380 insertions, 23 deletions

diff --git a/indra/newview/lltoolpie.cpp b/indra/newview/lltoolpie.cpp
index a0c12df834..33bdc8ddcd 100644
--- a/indra/newview/lltoolpie.cpp
+++ b/indra/newview/lltoolpie.cpp
@@ -121,7 +121,7 @@ BOOL LLToolPie::handleMouseDown(S32 x, S32 y, MASK mask)
 BOOL LLToolPie::handleRightMouseDown(S32 x, S32 y, MASK mask)
 {
 	// don't pick transparent so users can't "pay" transparent objects
-	mPick = gViewerWindow->pickImmediate(x, y, FALSE);
+	mPick = gViewerWindow->pickImmediate(x, y, FALSE, TRUE);
 	mPick.mKeyMask = mask;
 
 	// claim not handled so UI focus stays same
@@ -1711,6 +1711,13 @@ BOOL LLToolPie::handleRightClickPick()
 			showVisualContextMenuEffect();
 		}
 	}
+	else if (mPick.mParticleOwnerID.notNull())
+	{
+		if (gMenuMuteParticle && mPick.mParticleOwnerID != gAgent.getID())
+		{
+			gMenuMuteParticle->show(x,y);
+		}
+	}
 
 	LLTool::handleRightMouseDown(x, y, mask);
 	// We handled the event.
diff --git a/indra/newview/llviewermenu.cpp b/indra/newview/llviewermenu.cpp
index 93e4f4428a..0a0d084183 100644
--- a/indra/newview/llviewermenu.cpp
+++ b/indra/newview/llviewermenu.cpp
@@ -165,6 +165,7 @@ LLContextMenu	*gMenuObject = NULL;
 LLContextMenu	*gMenuAttachmentSelf = NULL;
 LLContextMenu	*gMenuAttachmentOther = NULL;
 LLContextMenu	*gMenuLand	= NULL;
+LLContextMenu	*gMenuMuteParticle = NULL;
 
 const std::string SAVE_INTO_TASK_INVENTORY("Save Object Back to Object Contents");
 
@@ -423,6 +424,9 @@ void init_menus()
 	gMenuLand = LLUICtrlFactory::createFromFile<LLContextMenu>(
 		"menu_land.xml", gMenuHolder, registry);
 
+	gMenuMuteParticle = LLUICtrlFactory::createFromFile<LLContextMenu>(
+		"menu_mute_particle.xml", gMenuHolder, registry);
+
 	///
 	/// set up the colors
 	///
@@ -2457,6 +2461,9 @@ void cleanup_menus()
 	delete gMenuLand;
 	gMenuLand = NULL;
 
+	delete gMenuMuteParticle;
+	gMenuMuteParticle = NULL;
+
 	delete gMenuBarView;
 	gMenuBarView = NULL;
 
@@ -2810,6 +2817,13 @@ bool enable_object_edit()
 	return enable;
 }
 
+bool enable_mute_particle()
+{
+	const LLPickInfo& pick = LLToolPie::getInstance()->getPick();
+
+	return pick.mParticleOwnerID != LLUUID::null && pick.mParticleOwnerID != gAgent.getID();
+}
+
 // mutually exclusive - show either edit option or build in menu
 bool enable_object_build()
 {
@@ -6245,6 +6259,33 @@ class LLLandEdit : public view_listener_t
 	}
 };
 
+class LLMuteParticle : public view_listener_t
+{
+	bool handleEvent(const LLSD& userdata)
+	{
+		LLUUID id = LLToolPie::getInstance()->getPick().mParticleOwnerID;
+		
+		if (id.notNull())
+		{
+			std::string name;
+			gCacheName->getFullName(id, name);
+
+			LLMute mute(id, name, LLMute::AGENT);
+			if (LLMuteList::getInstance()->isMuted(mute.mID))
+			{
+				LLMuteList::getInstance()->remove(mute);
+			}
+			else
+			{
+				LLMuteList::getInstance()->add(mute);
+				LLPanelBlockedList::showPanelAndSelect(mute.mID);
+			}
+		}
+
+		return true;
+	}
+};
+
 class LLWorldEnableBuyLand : public view_listener_t
 {
 	bool handleEvent(const LLSD& userdata)
@@ -8657,6 +8698,9 @@ void initialize_menus()
 	view_listener_t::addMenu(new LLLandBuyPass(), "Land.BuyPass");
 	view_listener_t::addMenu(new LLLandEdit(), "Land.Edit");
 
+	// Particle muting
+	view_listener_t::addMenu(new LLMuteParticle(), "Particle.Mute");
+
 	view_listener_t::addMenu(new LLLandEnableBuyPass(), "Land.EnableBuyPass");
 	commit.add("Land.Buy", boost::bind(&handle_buy_land));
 
@@ -8679,6 +8723,7 @@ void initialize_menus()
 	enable.add("EnablePayObject", boost::bind(&enable_pay_object));
 	enable.add("EnablePayAvatar", boost::bind(&enable_pay_avatar));
 	enable.add("EnableEdit", boost::bind(&enable_object_edit));
+	enable.add("EnableMuteParticle", boost::bind(&enable_mute_particle));
 	enable.add("VisibleBuild", boost::bind(&enable_object_build));
 	commit.add("Pathfinding.Linksets.Select", boost::bind(&LLFloaterPathfindingLinksets::openLinksetsWithSelectedObjects));
 	enable.add("EnableSelectInPathfindingLinksets", boost::bind(&enable_object_select_in_pathfinding_linksets));
diff --git a/indra/newview/llviewermenu.h b/indra/newview/llviewermenu.h
index 2eb458fa02..87d679f54f 100644
--- a/indra/newview/llviewermenu.h
+++ b/indra/newview/llviewermenu.h
@@ -172,6 +172,7 @@ extern LLContextMenu		*gMenuObject;
 extern LLContextMenu		*gMenuAttachmentSelf;
 extern LLContextMenu		*gMenuAttachmentOther;
 extern LLContextMenu		*gMenuLand;
+extern LLContextMenu		*gMenuMuteParticle;
 
 // Needed to build menus when attachment site list available
 extern LLMenuGL* gAttachSubMenu;
diff --git a/indra/newview/llviewerwindow.cpp b/indra/newview/llviewerwindow.cpp
index b9243f3fdb..7ab98d6633 100755
--- a/indra/newview/llviewerwindow.cpp
+++ b/indra/newview/llviewerwindow.cpp
@@ -225,6 +225,8 @@ LLFrameTimer	gAwayTriggerTimer;
 BOOL			gShowOverlayTitle = FALSE;
 
 LLViewerObject*  gDebugRaycastObject = NULL;
+LLVOPartGroup* gDebugRaycastParticle = NULL;
+LLVector3		gDebugRaycastParticleIntersection;
 LLVector3       gDebugRaycastIntersection;
 LLVector2       gDebugRaycastTexCoord;
 LLVector3       gDebugRaycastNormal;
@@ -2811,6 +2813,8 @@ void LLViewerWindow::updateUI()
 											  &gDebugRaycastBinormal,
 											  &gDebugRaycastStart,
 											  &gDebugRaycastEnd);
+
+		gDebugRaycastParticle = gPipeline.lineSegmentIntersectParticle(gDebugRaycastStart, gDebugRaycastEnd, &gDebugRaycastParticleIntersection, NULL);
 	}
 
 	updateMouseDelta();
@@ -3633,7 +3637,7 @@ void LLViewerWindow::pickAsync(S32 x, S32 y_from_bot, MASK mask, void (*callback
 		pick_transparent = TRUE;
 	}
 
-	LLPickInfo pick_info(LLCoordGL(x, y_from_bot), mask, pick_transparent, TRUE, callback);
+	LLPickInfo pick_info(LLCoordGL(x, y_from_bot), mask, pick_transparent, FALSE, TRUE, callback);
 	schedulePick(pick_info);
 }
 
@@ -3689,7 +3693,7 @@ void LLViewerWindow::returnEmptyPicks()
 }
 
 // Performs the GL object/land pick.
-LLPickInfo LLViewerWindow::pickImmediate(S32 x, S32 y_from_bot,  BOOL pick_transparent)
+LLPickInfo LLViewerWindow::pickImmediate(S32 x, S32 y_from_bot,  BOOL pick_transparent, BOOL pick_particle)
 {
 	BOOL in_build_mode = LLFloaterReg::instanceVisible("build");
 	if (in_build_mode || LLDrawPoolAlpha::sShowDebugAlpha)
@@ -3698,10 +3702,10 @@ LLPickInfo LLViewerWindow::pickImmediate(S32 x, S32 y_from_bot,  BOOL pick_trans
 		// "Show Debug Alpha" means no object actually transparent
 		pick_transparent = TRUE;
 	}
-
+	
 	// shortcut queueing in mPicks and just update mLastPick in place
 	MASK	key_mask = gKeyboard->currentMask(TRUE);
-	mLastPick = LLPickInfo(LLCoordGL(x, y_from_bot), key_mask, pick_transparent, TRUE, NULL);
+	mLastPick = LLPickInfo(LLCoordGL(x, y_from_bot), key_mask, pick_transparent, pick_particle, TRUE, NULL);
 	mLastPick.fetchResults();
 
 	return mLastPick;
@@ -5107,13 +5111,15 @@ LLPickInfo::LLPickInfo()
 	  mNormal(),
 	  mBinormal(),
 	  mHUDIcon(NULL),
-	  mPickTransparent(FALSE)
+	  mPickTransparent(FALSE),
+	  mPickParticle(FALSE)
 {
 }
 
 LLPickInfo::LLPickInfo(const LLCoordGL& mouse_pos, 
 		       MASK keyboard_mask, 
 		       BOOL pick_transparent,
+			   BOOL pick_particle,
 		       BOOL pick_uv_coords,
 		       void (*pick_callback)(const LLPickInfo& pick_info))
 	: mMousePt(mouse_pos),
@@ -5128,7 +5134,8 @@ LLPickInfo::LLPickInfo(const LLCoordGL& mouse_pos,
 	  mNormal(),
 	  mBinormal(),
 	  mHUDIcon(NULL),
-	  mPickTransparent(pick_transparent)
+	  mPickTransparent(pick_transparent),
+	  mPickParticle(pick_particle)
 {
 }
 
@@ -5142,20 +5149,34 @@ void LLPickInfo::fetchResults()
 	LLHUDIcon* hit_icon = gViewerWindow->cursorIntersectIcon(mMousePt.mX, mMousePt.mY, 512.f, &intersection);
 	
 	F32 icon_dist = 0.f;
+	LLVector3 start;
+	LLVector3 end;
+	LLVector3 particle_end;
+
 	if (hit_icon)
 	{
 		icon_dist = (LLViewerCamera::getInstance()->getOrigin()-intersection).magVec();
 	}
 	LLViewerObject* hit_object = gViewerWindow->cursorIntersect(mMousePt.mX, mMousePt.mY, 512.f,
 									NULL, -1, mPickTransparent, &face_hit,
-									&intersection, &uv, &normal, &binormal);
+									&intersection, &uv, &normal, &binormal, &start, &end);
 	
 	mPickPt = mMousePt;
 
 	U32 te_offset = face_hit > -1 ? face_hit : 0;
 
-	//unproject relative clicked coordinate from window coordinate using GL
-	
+	if (mPickParticle)
+	{ //get the end point of line segement to use for particle raycast
+		if (hit_object)
+		{
+			particle_end = intersection;
+		}
+		else
+		{
+			particle_end = end;
+		}
+	}
+
 	LLViewerObject* objectp = hit_object;
 
 	if (hit_icon && 
@@ -5166,6 +5187,7 @@ void LLPickInfo::fetchResults()
 		mHUDIcon = hit_icon;
 		mPickType = PICK_ICON;
 		mPosGlobal = mHUDIcon->getPositionGlobal();
+
 	}
 	else if (objectp)
 	{
@@ -5210,6 +5232,18 @@ void LLPickInfo::fetchResults()
 		}
 	}
 	
+	if (mPickParticle)
+	{ //search for closest particle to click origin out to intersection point
+		S32 part_face = -1;
+
+		LLVOPartGroup* group = gPipeline.lineSegmentIntersectParticle(start, particle_end, NULL, &part_face);
+		if (group)
+		{
+			mParticleOwnerID = group->getPartOwner(part_face);
+			mParticleSourceID = group->getPartSource(part_face);
+		}
+	}
+
 	if (mPickCallback)
 	{
 		mPickCallback(*this);
diff --git a/indra/newview/llviewerwindow.h b/indra/newview/llviewerwindow.h
index 5f475fe145..35ed25ba9c 100644
--- a/indra/newview/llviewerwindow.h
+++ b/indra/newview/llviewerwindow.h
@@ -64,6 +64,7 @@ class LLWindow;
 class LLRootView;
 class LLWindowListener;
 class LLViewerWindowListener;
+class LLVOPartGroup;
 class LLPopupView;
 
 #define PICK_HALF_WIDTH 5
@@ -86,7 +87,8 @@ public:
 	LLPickInfo();
 	LLPickInfo(const LLCoordGL& mouse_pos, 
 		MASK keyboard_mask, 
-		BOOL pick_transparent, 
+		BOOL pick_transparent,
+		BOOL pick_particle,
 		BOOL pick_surface_info,
 		void (*pick_callback)(const LLPickInfo& pick_info));
 
@@ -107,6 +109,8 @@ public:
 	LLVector3d		mPosGlobal;
 	LLVector3		mObjectOffset;
 	LLUUID			mObjectID;
+	LLUUID			mParticleOwnerID;
+	LLUUID			mParticleSourceID;
 	S32				mObjectFace;
 	LLHUDIcon*		mHUDIcon;
 	LLVector3       mIntersection;
@@ -116,6 +120,7 @@ public:
 	LLVector3		mNormal;
 	LLVector3		mBinormal;
 	BOOL			mPickTransparent;
+	BOOL			mPickParticle;
 	void		    getSurfaceInfo();
 
 private:
@@ -354,7 +359,7 @@ public:
 	void			returnEmptyPicks();
 
 	void			pickAsync(S32 x, S32 y_from_bot, MASK mask, void (*callback)(const LLPickInfo& pick_info), BOOL pick_transparent = FALSE);
-	LLPickInfo		pickImmediate(S32 x, S32 y, BOOL pick_transparent);
+	LLPickInfo		pickImmediate(S32 x, S32 y, BOOL pick_transparent, BOOL pick_particle = FALSE);
 	LLHUDIcon* cursorIntersectIcon(S32 mouse_x, S32 mouse_y, F32 depth,
 										   LLVector3* intersection);
 
@@ -494,6 +499,8 @@ extern LLFrameTimer		gAwayTimer;				// tracks time before setting the avatar awa
 extern LLFrameTimer		gAwayTriggerTimer;		// how long the avatar has been away
 
 extern LLViewerObject*  gDebugRaycastObject;
+extern LLVOPartGroup*	gDebugRaycastParticle;
+extern LLVector3		gDebugRaycastParticleIntersection;
 extern LLVector3        gDebugRaycastIntersection;
 extern LLVector2        gDebugRaycastTexCoord;
 extern LLVector3        gDebugRaycastNormal;
diff --git a/indra/newview/llvopartgroup.cpp b/indra/newview/llvopartgroup.cpp
index fa34a6f1f5..1a9769f09d 100644
--- a/indra/newview/llvopartgroup.cpp
+++ b/indra/newview/llvopartgroup.cpp
@@ -232,6 +232,37 @@ LLDrawable* LLVOPartGroup::createDrawable(LLPipeline *pipeline)
 
  const F32 MAX_PARTICLE_AREA_SCALE = 0.02f; // some tuned constant, limits on how much particle area to draw
 
+ LLUUID LLVOPartGroup::getPartOwner(S32 idx)
+ {
+	 LLUUID ret = LLUUID::null;
+
+	 if (idx < (S32) mViewerPartGroupp->mParticles.size())
+	 {
+		 ret = mViewerPartGroupp->mParticles[idx]->mPartSourcep->getOwnerUUID();
+	 }
+
+	 return ret;
+ }
+
+ LLUUID LLVOPartGroup::getPartSource(S32 idx)
+ {
+	 LLUUID ret = LLUUID::null;
+
+	 if (idx < (S32) mViewerPartGroupp->mParticles.size())
+	 {
+		 LLViewerPart* part = mViewerPartGroupp->mParticles[idx];
+		 if (part && part->mPartSourcep.notNull() &&
+			 part->mPartSourcep->mSourceObjectp.notNull())
+		 {
+			 LLViewerObject* source = part->mPartSourcep->mSourceObjectp;
+			 ret = source->getID();
+		 }
+	 }
+
+	 return ret;
+ }
+
+
 F32 LLVOPartGroup::getPartSize(S32 idx)
 {
 	if (idx < (S32) mViewerPartGroupp->mParticles.size())
@@ -385,20 +416,68 @@ BOOL LLVOPartGroup::updateGeometry(LLDrawable *drawable)
 	return TRUE;
 }
 
-void LLVOPartGroup::getGeometry(S32 idx,
-								LLStrider<LLVector4a>& verticesp,
-								LLStrider<LLVector3>& normalsp, 
-								LLStrider<LLVector2>& texcoordsp,
-								LLStrider<LLColor4U>& colorsp, 
-								LLStrider<U16>& indicesp)
+
+BOOL LLVOPartGroup::lineSegmentIntersect(const LLVector3& start, const LLVector3& end,
+										  S32 face,
+										  BOOL pick_transparent,
+										  S32* face_hit,
+										  LLVector3* intersection,
+										  LLVector2* tex_coord,
+										  LLVector3* normal,
+										  LLVector3* bi_normal)
 {
-	if (idx >= (S32) mViewerPartGroupp->mParticles.size())
+	LLVector4a starta, enda;
+	starta.load3(start.mV);
+	enda.load3(end.mV);
+
+	LLVector4a dir;
+	dir.setSub(enda, starta);
+
+	F32 closest_t = 2.f;
+	BOOL ret = FALSE;
+	
+	for (U32 idx = 0; idx < mViewerPartGroupp->mParticles.size(); ++idx)
 	{
-		return;
+		const LLViewerPart &part = *((LLViewerPart*) (mViewerPartGroupp->mParticles[idx]));
+
+		LLVector4a v[4];
+		LLStrider<LLVector4a> verticesp;
+		verticesp = v;
+		
+		getGeometry(part, verticesp);
+
+		F32 a,b,t;
+		if (LLTriangleRayIntersect(v[0], v[1], v[2], starta, dir, a,b,t) ||
+			LLTriangleRayIntersect(v[1], v[3], v[2], starta, dir, a,b,t))
+		{
+			if (t >= 0.f &&
+				t <= 1.f &&
+				t < closest_t)
+			{
+				ret = TRUE;
+				closest_t = t;
+				if (face_hit)
+				{
+					*face_hit = idx;
+				}
+
+				if (intersection)
+				{
+					LLVector4a intersect = dir;
+					intersect.mul(closest_t);
+					intersect.add(starta);
+					intersection->set(intersect.getF32ptr());
+				}
+			}
+		}
 	}
 
-	const LLViewerPart &part = *((LLViewerPart*) (mViewerPartGroupp->mParticles[idx]));
+	return ret;
+}
 
+void LLVOPartGroup::getGeometry(const LLViewerPart& part,
+								LLStrider<LLVector4a>& verticesp)
+{
 	LLVector4a part_pos_agent;
 	part_pos_agent.load3(part.mPosAgent.mV);
 	LLVector4a camera_agent;
@@ -449,8 +528,6 @@ void LLVOPartGroup::getGeometry(S32 idx,
 	up.mul(0.5f*part.mScale.mV[1]);
 
 
-	LLVector3 normal = -LLViewerCamera::getInstance()->getXAxis();
-
 	//HACK -- the verticesp->mV[3] = 0.f here are to set the texture index to 0 (particles don't use texture batching, maybe they should)
 	// this works because there is actually a 4th float stored after the vertex position which is used as a texture index
 	// also, somebody please VECTORIZE THIS
@@ -469,6 +546,25 @@ void LLVOPartGroup::getGeometry(S32 idx,
 	(*verticesp++).getF32ptr()[3] = 0.f;
 	verticesp->setAdd(ppamu, right);
 	(*verticesp++).getF32ptr()[3] = 0.f;
+}
+
+
+								
+void LLVOPartGroup::getGeometry(S32 idx,
+								LLStrider<LLVector4a>& verticesp,
+								LLStrider<LLVector3>& normalsp, 
+								LLStrider<LLVector2>& texcoordsp,
+								LLStrider<LLColor4U>& colorsp, 
+								LLStrider<U16>& indicesp)
+{
+	if (idx >= (S32) mViewerPartGroupp->mParticles.size())
+	{
+		return;
+	}
+	
+	const LLViewerPart &part = *((LLViewerPart*) (mViewerPartGroupp->mParticles[idx]));
+
+	getGeometry(part, verticesp);
 
 	*colorsp++ = part.mColor;
 	*colorsp++ = part.mColor;
@@ -477,6 +573,7 @@ void LLVOPartGroup::getGeometry(S32 idx,
 
 	if (!(part.mFlags & LLPartData::LL_PART_EMISSIVE_MASK))
 	{ //not fullbright, needs normal
+		LLVector3 normal = -LLViewerCamera::getInstance()->getXAxis();
 		*normalsp++   = normal;
 		*normalsp++   = normal;
 		*normalsp++   = normal;
diff --git a/indra/newview/llvopartgroup.h b/indra/newview/llvopartgroup.h
index 42c1252d01..ce05a0282e 100644
--- a/indra/newview/llvopartgroup.h
+++ b/indra/newview/llvopartgroup.h
@@ -69,11 +69,23 @@ public:
 	virtual void updateSpatialExtents(LLVector4a& newMin, LLVector4a& newMax);
 	virtual U32 getPartitionType() const;
 	
+	/*virtual*/ BOOL lineSegmentIntersect(const LLVector3& start, const LLVector3& end,
+										  S32 face,
+										  BOOL pick_transparent,
+										  S32* face_hit,
+										  LLVector3* intersection,
+										  LLVector2* tex_coord,
+										  LLVector3* normal,
+										  LLVector3* bi_normal);
+
 	/*virtual*/ void setPixelAreaAndAngle(LLAgent &agent);
 	/*virtual*/ void updateTextures();
 
 	/*virtual*/ LLDrawable* createDrawable(LLPipeline *pipeline);
 	/*virtual*/ BOOL        updateGeometry(LLDrawable *drawable);
+	void		getGeometry(const LLViewerPart& part,							
+								LLStrider<LLVector4a>& verticesp);
+				
 				void		getGeometry(S32 idx,
 								LLStrider<LLVector4a>& verticesp,
 								LLStrider<LLVector3>& normalsp, 
@@ -83,6 +95,9 @@ public:
 
 	void updateFaceSize(S32 idx) { }
 	F32 getPartSize(S32 idx);
+	LLUUID getPartOwner(S32 idx);
+	LLUUID getPartSource(S32 idx);
+
 	void setViewerPartGroup(LLViewerPartGroup *part_groupp)		{ mViewerPartGroupp = part_groupp; }
 	LLViewerPartGroup* getViewerPartGroup()	{ return mViewerPartGroupp; }
 
diff --git a/indra/newview/pipeline.cpp b/indra/newview/pipeline.cpp
index 75f5e16452..a7e8fdc43c 100644
--- a/indra/newview/pipeline.cpp
+++ b/indra/newview/pipeline.cpp
@@ -5023,6 +5023,42 @@ void LLPipeline::renderDebug()
 		gUIProgram.bind();
 	}
 
+	if (hasRenderDebugMask(LLPipeline::RENDER_DEBUG_RAYCAST) && !hud_only)
+	{ //draw crosshairs on particle intersection
+		if (gDebugRaycastParticle)
+		{
+			if (LLGLSLShader::sNoFixedFunction)
+			{ //this debug display requires shaders
+				gDebugProgram.bind();
+
+				gGL.getTexUnit(0)->unbind(LLTexUnit::TT_TEXTURE);
+
+				LLVector3 center = gDebugRaycastParticleIntersection;
+				LLVector3 size(0.1f, 0.1f, 0.1f);
+
+				LLVector3 p[6];
+
+				p[0] = center + size.scaledVec(LLVector3(1,0,0));
+				p[1] = center + size.scaledVec(LLVector3(-1,0,0));
+				p[2] = center + size.scaledVec(LLVector3(0,1,0));
+				p[3] = center + size.scaledVec(LLVector3(0,-1,0));
+				p[4] = center + size.scaledVec(LLVector3(0,0,1));
+				p[5] = center + size.scaledVec(LLVector3(0,0,-1));
+				
+				gGL.begin(LLRender::LINES);
+				gGL.diffuseColor3f(1.f, 1.f, 0.f);
+				for (U32 i = 0; i < 6; i++)
+				{
+					gGL.vertex3fv(p[i].mV);
+				}
+				gGL.end();
+				gGL.flush();
+
+				gDebugProgram.unbind();
+			}
+		}
+	}
+
 	if (hasRenderDebugMask(LLPipeline::RENDER_DEBUG_SHADOW_FRUSTA))
 	{
 		LLVertexBuffer::unbind();
@@ -6600,6 +6636,48 @@ BOOL LLPipeline::getRenderHighlights(void*)
 	return sRenderHighlight;
 }
 
+LLVOPartGroup* LLPipeline::lineSegmentIntersectParticle(const LLVector3& start, const LLVector3& end, LLVector3* intersection,
+														S32* face_hit)
+{
+	LLVector3 local_end = end;
+
+	LLVector3 position;
+
+	LLDrawable* drawable = NULL;
+
+	for (LLWorld::region_list_t::const_iterator iter = LLWorld::getInstance()->getRegionList().begin(); 
+			iter != LLWorld::getInstance()->getRegionList().end(); ++iter)
+	{
+		LLViewerRegion* region = *iter;
+
+		LLSpatialPartition* part = region->getSpatialPartition(LLViewerRegion::PARTITION_PARTICLE);
+		if (part && hasRenderType(part->mDrawableType))
+		{
+			LLDrawable* hit = part->lineSegmentIntersect(start, local_end, TRUE, face_hit, &position, NULL, NULL, NULL);
+			if (hit)
+			{
+				drawable = hit;
+				local_end = position;						
+			}
+		}
+	}
+
+	LLVOPartGroup* ret = NULL;
+	if (drawable)
+	{
+		//make sure we're returning an LLVOPartGroup
+		llassert(drawable->getVObj()->getPCode() == LLViewerObject::LL_VO_PART_GROUP);
+		ret = (LLVOPartGroup*) drawable->getVObj().get();
+	}
+		
+	if (intersection)
+	{
+		*intersection = position;
+	}
+
+	return ret;
+}
+
 LLViewerObject* LLPipeline::lineSegmentIntersectInWorld(const LLVector3& start, const LLVector3& end,
 														BOOL pick_transparent,												
 														S32* face_hit,
diff --git a/indra/newview/pipeline.h b/indra/newview/pipeline.h
index 9e113289fc..4d32e47433 100644
--- a/indra/newview/pipeline.h
+++ b/indra/newview/pipeline.h
@@ -57,6 +57,7 @@ class LLRenderFunc;
 class LLCubeMap;
 class LLCullResult;
 class LLVOAvatar;
+class LLVOPartGroup;
 class LLGLSLShader;
 class LLCurlRequest;
 
@@ -193,6 +194,12 @@ public:
 												LLVector3* normal = NULL,               // return the surface normal at the intersection point
 												LLVector3* bi_normal = NULL             // return the surface bi-normal at the intersection point  
 		);
+
+	//get the closest particle to start between start and end, returns the LLVOPartGroup and particle index
+	LLVOPartGroup* lineSegmentIntersectParticle(const LLVector3& start, const LLVector3& end, LLVector3* intersection,
+														S32* face_hit);
+
+
 	LLViewerObject* lineSegmentIntersectInHUD(const LLVector3& start, const LLVector3& end,
 											  BOOL pick_transparent,
 											  S32* face_hit,                          // return the face hit
diff --git a/indra/newview/skins/default/xui/en/menu_attachment_other.xml b/indra/newview/skins/default/xui/en/menu_attachment_other.xml
index b46b62ec4d..00d4b1dab1 100644
--- a/indra/newview/skins/default/xui/en/menu_attachment_other.xml
+++ b/indra/newview/skins/default/xui/en/menu_attachment_other.xml
@@ -104,4 +104,15 @@
          <menu_item_call.on_enable
           function="Object.EnableInspect" />
    </menu_item_call>
+  <menu_item_separator
+       layout="topleft" />
+  <menu_item_call
+     enabled="false"
+     label="Mute Particle Owner"
+     name="Mute Particle">
+    <menu_item_call.on_click
+     function="Particle.Mute" />
+    <menu_item_call.on_enable
+     function="EnableMuteParticle" />
+  </menu_item_call>
 </context_menu>
diff --git a/indra/newview/skins/default/xui/en/menu_attachment_self.xml b/indra/newview/skins/default/xui/en/menu_attachment_self.xml
index b8128da358..73c9e8a9d8 100644
--- a/indra/newview/skins/default/xui/en/menu_attachment_self.xml
+++ b/indra/newview/skins/default/xui/en/menu_attachment_self.xml
@@ -135,4 +135,15 @@ name="Edit Outfit">
     <menu_item_call.on_enable
      function="Attachment.EnableDrop" />
   </menu_item_call>
+  <menu_item_separator
+       layout="topleft" />
+  <menu_item_call
+     enabled="false"
+     label="Mute Particle Owner"
+     name="Mute Particle">
+    <menu_item_call.on_click
+     function="Particle.Mute" />
+    <menu_item_call.on_enable
+     function="EnableMuteParticle" />
+  </menu_item_call>
 </context_menu>
diff --git a/indra/newview/skins/default/xui/en/menu_avatar_other.xml b/indra/newview/skins/default/xui/en/menu_avatar_other.xml
index 276b5f106f..73fa086f28 100644
--- a/indra/newview/skins/default/xui/en/menu_avatar_other.xml
+++ b/indra/newview/skins/default/xui/en/menu_avatar_other.xml
@@ -95,4 +95,15 @@
         <menu_item_call.on_enable
          function="EnablePayAvatar" />
     </menu_item_call>
+  <menu_item_separator
+       layout="topleft" />
+  <menu_item_call
+     enabled="false"
+     label="Mute Particle Owner"
+     name="Mute Particle">
+    <menu_item_call.on_click
+     function="Particle.Mute" />
+    <menu_item_call.on_enable
+     function="EnableMuteParticle" />
+  </menu_item_call>
 </context_menu>
diff --git a/indra/newview/skins/default/xui/en/menu_avatar_self.xml b/indra/newview/skins/default/xui/en/menu_avatar_self.xml
index d9bdfece38..ed35e5e771 100644
--- a/indra/newview/skins/default/xui/en/menu_avatar_self.xml
+++ b/indra/newview/skins/default/xui/en/menu_avatar_self.xml
@@ -261,4 +261,15 @@
             <menu_item_call.on_visible
              function="IsGodCustomerService"/>
     </menu_item_call>
+  <menu_item_separator
+       layout="topleft" />
+  <menu_item_call
+     enabled="false"
+     label="Mute Particle Owner"
+     name="Mute Particle">
+    <menu_item_call.on_click
+     function="Particle.Mute" />
+    <menu_item_call.on_enable
+     function="EnableMuteParticle" />
+  </menu_item_call>
 </context_menu>
diff --git a/indra/newview/skins/default/xui/en/menu_land.xml b/indra/newview/skins/default/xui/en/menu_land.xml
index cc6d8ad9c1..7b40e89535 100644
--- a/indra/newview/skins/default/xui/en/menu_land.xml
+++ b/indra/newview/skins/default/xui/en/menu_land.xml
@@ -61,4 +61,15 @@
         <menu_item_call.on_enable
          function="EnableEdit" />
     </menu_item_call>
+   <menu_item_separator
+       layout="topleft" />
+  <menu_item_call
+     enabled="false"
+     label="Mute Particle Owner"
+     name="Mute Particle">
+    <menu_item_call.on_click
+     function="Particle.Mute" />
+    <menu_item_call.on_enable
+     function="EnableMuteParticle" />
+  </menu_item_call>
 </context_menu>
diff --git a/indra/newview/skins/default/xui/en/menu_object.xml b/indra/newview/skins/default/xui/en/menu_object.xml
index f6004621a6..97b24d2aba 100644
--- a/indra/newview/skins/default/xui/en/menu_object.xml
+++ b/indra/newview/skins/default/xui/en/menu_object.xml
@@ -196,4 +196,15 @@
     <menu_item_call.on_enable
         function="Object.EnableDelete" />
   </menu_item_call>
+  <menu_item_separator
+       layout="topleft" />
+  <menu_item_call
+     enabled="false"
+     label="Mute Particle Owner"
+     name="Mute Particle">
+    <menu_item_call.on_click
+     function="Particle.Mute" />
+    <menu_item_call.on_enable
+     function="EnableMuteParticle" />
+  </menu_item_call>
 </context_menu>