diff --git a/interface/resources/qml/hifi/Pal.qml b/interface/resources/qml/hifi/Pal.qml
index 549598dd2e..7260cd1c14 100644
--- a/interface/resources/qml/hifi/Pal.qml
+++ b/interface/resources/qml/hifi/Pal.qml
@@ -476,8 +476,6 @@ Rectangle {
                     // Set the userName appropriately
                     userModel.setProperty(userIndex, "userName", userName);
                     userModelData[userIndex].userName = userName; // Defensive programming
-                } else {
-                    console.log("updateUsername() called with unknown UUID: ", userId);
                 }
             }
             break;
@@ -493,8 +491,6 @@ Rectangle {
                     if (userIndex != -1) {
                         userModel.setProperty(userIndex, "audioLevel", audioLevel);
                         userModelData[userIndex].audioLevel = audioLevel; // Defensive programming
-                    } else {
-                        console.log("updateUsername() called with unknown UUID: ", userId);
                     }
                 }
             }
diff --git a/interface/src/Application.cpp b/interface/src/Application.cpp
index 4f35b10a1b..8abf63f9f2 100644
--- a/interface/src/Application.cpp
+++ b/interface/src/Application.cpp
@@ -3398,6 +3398,8 @@ void Application::idle(float nsecsElapsed) {
     PROFILE_COUNTER(app, "cpuSystem", { { "system", kernelUserAndSystem.z } });
 #endif
 
+
+
     auto displayPlugin = getActiveDisplayPlugin();
     if (displayPlugin) {
         PROFILE_COUNTER_IF_CHANGED(app, "present", float, displayPlugin->presentRate());
@@ -3407,9 +3409,15 @@ void Application::idle(float nsecsElapsed) {
     PROFILE_COUNTER_IF_CHANGED(app, "pendingDownloads", int, ResourceCache::getPendingRequestCount());
     PROFILE_COUNTER_IF_CHANGED(app, "currentProcessing", int, DependencyManager::get<StatTracker>()->getStat("Processing").toInt());
     PROFILE_COUNTER_IF_CHANGED(app, "pendingProcessing", int, DependencyManager::get<StatTracker>()->getStat("PendingProcessing").toInt());
-
-
-
+    auto renderConfig = _renderEngine->getConfiguration();
+    PROFILE_COUNTER_IF_CHANGED(render, "gpuTime", float, (float)_gpuContext->getFrameTimerGPUAverage());
+    PROFILE_COUNTER(render_detail, "gpuTimes", {
+        { "OpaqueRangeTimer", renderConfig->getConfig("OpaqueRangeTimer")->property("gpuRunTime") },
+        { "LinearDepth", renderConfig->getConfig("LinearDepth")->property("gpuRunTime") },
+        { "SurfaceGeometry", renderConfig->getConfig("SurfaceGeometry")->property("gpuRunTime") },
+        { "RenderDeferred", renderConfig->getConfig("RenderDeferred")->property("gpuRunTime") },
+        { "ToneAndPostRangeTimer", renderConfig->getConfig("ToneAndPostRangeTimer")->property("gpuRunTime") }
+    });
 
     PROFILE_RANGE(app, __FUNCTION__);
 
diff --git a/interface/src/avatar/Avatar.cpp b/interface/src/avatar/Avatar.cpp
index 81eee6b3a7..ab4ae02a8e 100644
--- a/interface/src/avatar/Avatar.cpp
+++ b/interface/src/avatar/Avatar.cpp
@@ -62,7 +62,7 @@ const glm::vec3 HAND_TO_PALM_OFFSET(0.0f, 0.12f, 0.08f);
 
 namespace render {
     template <> const ItemKey payloadGetKey(const AvatarSharedPointer& avatar) {
-        return ItemKey::Builder::opaqueShape();
+        return ItemKey::Builder::opaqueShape().withTypeMeta();
     }
     template <> const Item::Bound payloadGetBound(const AvatarSharedPointer& avatar) {
         return static_pointer_cast<Avatar>(avatar)->getBounds();
@@ -74,6 +74,15 @@ namespace render {
             avatarPtr->render(args, qApp->getCamera()->getPosition());
         }
     }
+    template <> uint32_t metaFetchMetaSubItems(const AvatarSharedPointer& avatar, ItemIDs& subItems) {
+        auto avatarPtr = static_pointer_cast<Avatar>(avatar);
+        if (avatarPtr->getSkeletonModel()) {
+            auto metaSubItems = avatarPtr->getSkeletonModel()->fetchRenderItemIDs();
+            subItems.insert(subItems.end(), metaSubItems.begin(), metaSubItems.end());
+            return (uint32_t) metaSubItems.size();
+        }
+        return 0;
+    }
 }
 
 static uint64_t timeProcessingJoints = 0;
diff --git a/interface/src/avatar/Avatar.h b/interface/src/avatar/Avatar.h
index d03a8e9a54..d370402865 100644
--- a/interface/src/avatar/Avatar.h
+++ b/interface/src/avatar/Avatar.h
@@ -32,6 +32,7 @@ namespace render {
     template <> const ItemKey payloadGetKey(const AvatarSharedPointer& avatar);
     template <> const Item::Bound payloadGetBound(const AvatarSharedPointer& avatar);
     template <> void payloadRender(const AvatarSharedPointer& avatar, RenderArgs* args);
+    template <> uint32_t metaFetchMetaSubItems(const AvatarSharedPointer& avatar, ItemIDs& subItems);
 }
 
 static const float SCALING_RATIO = .05f;
diff --git a/libraries/display-plugins/src/display-plugins/OpenGLDisplayPlugin.cpp b/libraries/display-plugins/src/display-plugins/OpenGLDisplayPlugin.cpp
index e57c2b1d52..574c574f66 100644
--- a/libraries/display-plugins/src/display-plugins/OpenGLDisplayPlugin.cpp
+++ b/libraries/display-plugins/src/display-plugins/OpenGLDisplayPlugin.cpp
@@ -482,6 +482,7 @@ void OpenGLDisplayPlugin::submitFrame(const gpu::FramePointer& newFrame) {
 }
 
 void OpenGLDisplayPlugin::updateFrameData() {
+    PROFILE_RANGE(render, __FUNCTION__)
     if (_lockCurrentTexture) {
         return;
     }
@@ -596,12 +597,16 @@ void OpenGLDisplayPlugin::internalPresent() {
 }
 
 void OpenGLDisplayPlugin::present() {
-    PROFILE_RANGE_EX(render, __FUNCTION__, 0xffffff00, (uint64_t)presentCount())
-    updateFrameData();
+    auto frameId = (uint64_t)presentCount();
+    PROFILE_RANGE_EX(render, __FUNCTION__, 0xffffff00, frameId)
+    {
+        PROFILE_RANGE_EX(render, "updateFrameData", 0xff00ff00, frameId)
+        updateFrameData();
+    }
     incrementPresentCount();
 
     {
-        PROFILE_RANGE_EX(render, "recycle", 0xff00ff00, (uint64_t)presentCount())
+        PROFILE_RANGE_EX(render, "recycle", 0xff00ff00, frameId)
         _gpuContext->recycle();
     }
 
@@ -615,19 +620,19 @@ void OpenGLDisplayPlugin::present() {
                 _lastFrame = _currentFrame.get();
             });
             // Execute the frame rendering commands
-            PROFILE_RANGE_EX(render, "execute", 0xff00ff00, (uint64_t)presentCount())
+            PROFILE_RANGE_EX(render, "execute", 0xff00ff00, frameId)
             _gpuContext->executeFrame(_currentFrame);
         }
 
         // Write all layers to a local framebuffer
         {
-            PROFILE_RANGE_EX(render, "composite", 0xff00ffff, (uint64_t)presentCount())
+            PROFILE_RANGE_EX(render, "composite", 0xff00ffff, frameId)
             compositeLayers();
         }
 
         // Take the composite framebuffer and send it to the output device
         {
-            PROFILE_RANGE_EX(render, "internalPresent", 0xff00ffff, (uint64_t)presentCount())
+            PROFILE_RANGE_EX(render, "internalPresent", 0xff00ffff, frameId)
             internalPresent();
         }
 
diff --git a/libraries/entities-renderer/src/RenderableEntityItem.cpp b/libraries/entities-renderer/src/RenderableEntityItem.cpp
index 359b050803..be9ef08c0b 100644
--- a/libraries/entities-renderer/src/RenderableEntityItem.cpp
+++ b/libraries/entities-renderer/src/RenderableEntityItem.cpp
@@ -15,21 +15,21 @@
 
 namespace render {
     template <> const ItemKey payloadGetKey(const RenderableEntityItemProxy::Pointer& payload) { 
-        if (payload && payload->entity) {
-            if (payload->entity->getType() == EntityTypes::Light) {
-                return ItemKey::Builder::light();
+        if (payload && payload->_entity) {
+            if (payload->_entity->getType() == EntityTypes::Light) {
+                return ItemKey::Builder::light().withTypeMeta();
             }
-            if (payload && payload->entity->isTransparent()) {
-                return ItemKey::Builder::transparentShape();
+            if (payload && payload->_entity->isTransparent()) {
+                return ItemKey::Builder::transparentShape().withTypeMeta();
             }
         }
-        return ItemKey::Builder::opaqueShape();
+        return ItemKey::Builder::opaqueShape().withTypeMeta();
     }
     
     template <> const Item::Bound payloadGetBound(const RenderableEntityItemProxy::Pointer& payload) { 
-        if (payload && payload->entity) {
+        if (payload && payload->_entity) {
             bool success;
-            auto result = payload->entity->getAABox(success);
+            auto result = payload->_entity->getAABox(success);
             if (!success) {
                 return render::Item::Bound();
             }
@@ -39,11 +39,19 @@ namespace render {
     }
     template <> void payloadRender(const RenderableEntityItemProxy::Pointer& payload, RenderArgs* args) {
         if (args) {
-            if (payload && payload->entity && payload->entity->getVisible()) {
-                payload->entity->render(args);
+            if (payload && payload->_entity && payload->_entity->getVisible()) {
+                payload->_entity->render(args);
             }
         }
     }
+    template <> uint32_t metaFetchMetaSubItems(const RenderableEntityItemProxy::Pointer& payload, ItemIDs& subItems) {
+        auto metaID = payload->_metaID;
+        if (Item::isValidID(metaID)) {
+            subItems.emplace_back(metaID);
+            return 1;
+        }
+        return 0;
+    }
 }
 
 void makeEntityItemStatusGetters(EntityItemPointer entity, render::Item::Status::Getters& statusGetters) {
diff --git a/libraries/entities-renderer/src/RenderableEntityItem.h b/libraries/entities-renderer/src/RenderableEntityItem.h
index ec65bab1c8..98271ddbbb 100644
--- a/libraries/entities-renderer/src/RenderableEntityItem.h
+++ b/libraries/entities-renderer/src/RenderableEntityItem.h
@@ -36,17 +36,19 @@ void makeEntityItemStatusGetters(EntityItemPointer entity, render::Item::Status:
 
 class RenderableEntityItemProxy {
 public:
-    RenderableEntityItemProxy(EntityItemPointer entity) : entity(entity) { }
+    RenderableEntityItemProxy(EntityItemPointer entity, render::ItemID metaID) : _entity(entity), _metaID(metaID) { }
     typedef render::Payload<RenderableEntityItemProxy> Payload;
     typedef Payload::DataPointer Pointer;
 
-    EntityItemPointer entity;
+    EntityItemPointer _entity;
+    render::ItemID _metaID;
 };
 
 namespace render {
    template <> const ItemKey payloadGetKey(const RenderableEntityItemProxy::Pointer& payload);
    template <> const Item::Bound payloadGetBound(const RenderableEntityItemProxy::Pointer& payload);
    template <> void payloadRender(const RenderableEntityItemProxy::Pointer& payload, RenderArgs* args);
+   template <> uint32_t metaFetchMetaSubItems(const RenderableEntityItemProxy::Pointer& payload, ItemIDs& subItems);
 }
 
 // Mixin class for implementing basic single item rendering
@@ -55,7 +57,7 @@ public:
     bool addToScene(EntityItemPointer self, std::shared_ptr<render::Scene> scene, render::PendingChanges& pendingChanges) {
         _myItem = scene->allocateID();
 
-        auto renderData = std::make_shared<RenderableEntityItemProxy>(self);
+        auto renderData = std::make_shared<RenderableEntityItemProxy>(self, _myItem);
         auto renderPayload = std::make_shared<RenderableEntityItemProxy::Payload>(renderData);
 
         render::Item::Status::Getters statusGetters;
diff --git a/libraries/entities-renderer/src/RenderableModelEntityItem.cpp b/libraries/entities-renderer/src/RenderableModelEntityItem.cpp
index 55c766c267..945726255c 100644
--- a/libraries/entities-renderer/src/RenderableModelEntityItem.cpp
+++ b/libraries/entities-renderer/src/RenderableModelEntityItem.cpp
@@ -194,7 +194,7 @@ public:
 
 namespace render {
     template <> const ItemKey payloadGetKey(const RenderableModelEntityItemMeta::Pointer& payload) { 
-        return ItemKey::Builder::opaqueShape();
+        return ItemKey::Builder::opaqueShape().withTypeMeta();
     }
     
     template <> const Item::Bound payloadGetBound(const RenderableModelEntityItemMeta::Pointer& payload) { 
@@ -216,6 +216,15 @@ namespace render {
             }
         }
     }
+    template <> uint32_t metaFetchMetaSubItems(const RenderableModelEntityItemMeta::Pointer& payload, ItemIDs& subItems) {
+        auto modelEntity = std::static_pointer_cast<RenderableModelEntityItem>(payload->entity);
+        if (modelEntity->hasModel()) {
+            auto metaSubItems = modelEntity->getModelNotSafe()->fetchRenderItemIDs();
+            subItems.insert(subItems.end(), metaSubItems.begin(), metaSubItems.end());
+            return (uint32_t) metaSubItems.size();
+        }
+        return 0;
+    }
 }
 
 bool RenderableModelEntityItem::addToScene(EntityItemPointer self, std::shared_ptr<render::Scene> scene, 
@@ -473,6 +482,10 @@ void RenderableModelEntityItem::render(RenderArgs* args) {
     }
 }
 
+ModelPointer RenderableModelEntityItem::getModelNotSafe() {
+    return _model;
+}
+
 ModelPointer RenderableModelEntityItem::getModel(QSharedPointer<EntityTreeRenderer> renderer) {
     if (!renderer) {
         return nullptr;
diff --git a/libraries/entities-renderer/src/RenderableModelEntityItem.h b/libraries/entities-renderer/src/RenderableModelEntityItem.h
index 93d48c6085..bac2118326 100644
--- a/libraries/entities-renderer/src/RenderableModelEntityItem.h
+++ b/libraries/entities-renderer/src/RenderableModelEntityItem.h
@@ -52,6 +52,7 @@ public:
                         BoxFace& face, glm::vec3& surfaceNormal,
                         void** intersectedObject, bool precisionPicking) const override;
     ModelPointer getModel(QSharedPointer<EntityTreeRenderer> renderer);
+    ModelPointer getModelNotSafe();
 
     virtual bool needsToCallUpdate() const override;
     virtual void update(const quint64& now) override;
diff --git a/libraries/render-utils/src/Model.cpp b/libraries/render-utils/src/Model.cpp
index 3a3095458c..14391b9f16 100644
--- a/libraries/render-utils/src/Model.cpp
+++ b/libraries/render-utils/src/Model.cpp
@@ -673,6 +673,7 @@ bool Model::addToScene(std::shared_ptr<render::Scene> scene,
                 hasTransparent = hasTransparent || renderItem.get()->getShapeKey().isTranslucent();
                 verticesCount += renderItem.get()->getVerticesCount();
                 _modelMeshRenderItems.insert(item, renderPayload);
+                _modelMeshRenderItemIDs.emplace_back(item);
             }
             somethingAdded = !_modelMeshRenderItems.empty();
 
@@ -695,6 +696,7 @@ void Model::removeFromScene(std::shared_ptr<render::Scene> scene, render::Pendin
     foreach (auto item, _modelMeshRenderItems.keys()) {
         pendingChanges.removeItem(item);
     }
+    _modelMeshRenderItemIDs.clear();
     _modelMeshRenderItems.clear();
     _modelMeshRenderItemsSet.clear();
 
@@ -1301,6 +1303,10 @@ AABox Model::getRenderableMeshBound() const {
     }
 }
 
+const render::ItemIDs& Model::fetchRenderItemIDs() const {
+    return _modelMeshRenderItemIDs;
+}
+
 void Model::createRenderItemSet() {
     if (_collisionGeometry) {
         if (_collisionRenderItemsSet.empty()) {
@@ -1479,6 +1485,7 @@ void ModelBlender::noteRequiresBlend(ModelPointer model) {
 
     {
         Lock lock(_mutex);
+
         _modelsRequiringBlends.insert(model);
     }
 }
diff --git a/libraries/render-utils/src/Model.h b/libraries/render-utils/src/Model.h
index 55806b27e1..a11d6d511e 100644
--- a/libraries/render-utils/src/Model.h
+++ b/libraries/render-utils/src/Model.h
@@ -105,6 +105,7 @@ public:
     void setRenderItemsNeedUpdate() { _renderItemsNeedUpdate = true; }
     bool getRenderItemsNeedUpdate() { return _renderItemsNeedUpdate; }
     AABox getRenderableMeshBound() const;
+    const render::ItemIDs& fetchRenderItemIDs() const;
 
     bool maybeStartBlender();
 
@@ -389,6 +390,8 @@ protected:
     QSet<std::shared_ptr<ModelMeshPartPayload>> _modelMeshRenderItemsSet;
     QMap<render::ItemID, render::PayloadPointer> _modelMeshRenderItems;
 
+    render::ItemIDs _modelMeshRenderItemIDs;
+
     bool _addedToScene { false }; // has been added to scene
     bool _needsFixupInScene { true }; // needs to be removed/re-added to scene
     bool _needsReload { true };
diff --git a/libraries/render-utils/src/RenderDeferredTask.cpp b/libraries/render-utils/src/RenderDeferredTask.cpp
index f8cd112007..e0192b5f85 100644
--- a/libraries/render-utils/src/RenderDeferredTask.cpp
+++ b/libraries/render-utils/src/RenderDeferredTask.cpp
@@ -53,14 +53,15 @@ RenderDeferredTask::RenderDeferredTask(RenderFetchCullSortTask::Output items) {
     ShapePlumberPointer shapePlumber = std::make_shared<ShapePlumber>();
     initDeferredPipelines(*shapePlumber);
 
-    // Extract opaques / transparents / lights / overlays
-    const auto opaques = items[0];
-    const auto transparents = items[1];
-    const auto lights = items[2];
-    const auto overlayOpaques = items[3];
-    const auto overlayTransparents = items[4];
-    const auto background = items[5];
-    const auto spatialSelection = items[6];
+    // Extract opaques / transparents / lights / metas / overlays / background
+    const auto opaques = items[RenderFetchCullSortTask::OPAQUE_SHAPE];
+    const auto transparents = items[RenderFetchCullSortTask::TRANSPARENT_SHAPE];
+    const auto lights = items[RenderFetchCullSortTask::LIGHT];
+    const auto metas = items[RenderFetchCullSortTask::META];
+    const auto overlayOpaques = items[RenderFetchCullSortTask::OVERLAY_OPAQUE_SHAPE];
+    const auto overlayTransparents = items[RenderFetchCullSortTask::OVERLAY_TRANSPARENT_SHAPE];
+    const auto background = items[RenderFetchCullSortTask::BACKGROUND];
+    const auto spatialSelection = items[RenderFetchCullSortTask::SPATIAL_SELECTION];
 
     // Prepare deferred, generate the shared Deferred Frame Transform
     const auto deferredFrameTransform = addJob<GenerateDeferredFrameTransform>("DeferredFrameTransform");
@@ -158,6 +159,11 @@ RenderDeferredTask::RenderDeferredTask(RenderFetchCullSortTask::Output items) {
     
     // Debugging stages
     {
+
+
+        // Bounds do not draw on stencil buffer, so they must come last
+        addJob<DrawBounds>("DrawMetaBounds", metas);
+
         // Debugging Deferred buffer job
         const auto debugFramebuffers = render::Varying(DebugDeferredBuffer::Inputs(deferredFramebuffer, linearDepthTarget, surfaceGeometryFramebuffer, ambientOcclusionFramebuffer));
         addJob<DebugDeferredBuffer>("DebugDeferredBuffer", debugFramebuffers);
diff --git a/libraries/render-utils/src/RenderForwardTask.cpp b/libraries/render-utils/src/RenderForwardTask.cpp
index c7a3433c96..45a32c1aaf 100755
--- a/libraries/render-utils/src/RenderForwardTask.cpp
+++ b/libraries/render-utils/src/RenderForwardTask.cpp
@@ -24,8 +24,6 @@
 
 #include <gpu/StandardShaderLib.h>
 
-#include <render/drawItemBounds_vert.h>
-#include <render/drawItemBounds_frag.h>
 #include "nop_frag.h"
 
 using namespace render;
@@ -36,13 +34,15 @@ RenderForwardTask::RenderForwardTask(RenderFetchCullSortTask::Output items) {
     ShapePlumberPointer shapePlumber = std::make_shared<ShapePlumber>();
     initForwardPipelines(*shapePlumber);
 
-    // Extract opaques / transparents / lights / overlays
-    const auto opaques = items[0];
-    const auto transparents = items[1];
-    const auto lights = items[2];
-    const auto overlayOpaques = items[3];
-    const auto overlayTransparents = items[4];
-    const auto background = items[5];
+    // Extract opaques / transparents / lights / metas / overlays / background
+    const auto opaques = items[RenderFetchCullSortTask::OPAQUE_SHAPE];
+    const auto transparents = items[RenderFetchCullSortTask::TRANSPARENT_SHAPE];
+    const auto lights = items[RenderFetchCullSortTask::LIGHT];
+    const auto metas = items[RenderFetchCullSortTask::META];
+    const auto overlayOpaques = items[RenderFetchCullSortTask::OVERLAY_OPAQUE_SHAPE];
+    const auto overlayTransparents = items[RenderFetchCullSortTask::OVERLAY_TRANSPARENT_SHAPE];
+    const auto background = items[RenderFetchCullSortTask::BACKGROUND];
+    const auto spatialSelection = items[RenderFetchCullSortTask::SPATIAL_SELECTION];
 
     const auto framebuffer = addJob<PrepareFramebuffer>("PrepareFramebuffer");
 
@@ -180,57 +180,4 @@ void DrawBackground::run(const SceneContextPointer& sceneContext, const RenderCo
     args->_batch = nullptr;
 }
 
-const gpu::PipelinePointer DrawBounds::getPipeline() {
-    if (!_boundsPipeline) {
-        auto vs = gpu::Shader::createVertex(std::string(drawItemBounds_vert));
-        auto ps = gpu::Shader::createPixel(std::string(drawItemBounds_frag));
-        gpu::ShaderPointer program = gpu::Shader::createProgram(vs, ps);
 
-        gpu::Shader::BindingSet slotBindings;
-        gpu::Shader::makeProgram(*program, slotBindings);
-
-        _cornerLocation = program->getUniforms().findLocation("inBoundPos");
-        _scaleLocation = program->getUniforms().findLocation("inBoundDim");
-
-        auto state = std::make_shared<gpu::State>();
-        state->setDepthTest(true, false, gpu::LESS_EQUAL);
-        state->setBlendFunction(true,
-            gpu::State::SRC_ALPHA, gpu::State::BLEND_OP_ADD, gpu::State::INV_SRC_ALPHA,
-            gpu::State::DEST_ALPHA, gpu::State::BLEND_OP_ADD, gpu::State::ZERO);
-
-        _boundsPipeline = gpu::Pipeline::create(program, state);
-    }
-    return _boundsPipeline;
-}
-
-void DrawBounds::run(const SceneContextPointer& sceneContext, const RenderContextPointer& renderContext,
-        const Inputs& items) {
-    RenderArgs* args = renderContext->args;
-
-    gpu::doInBatch(args->_context, [&](gpu::Batch& batch) {
-        args->_batch = &batch;
-
-        // Setup projection
-        glm::mat4 projMat;
-        Transform viewMat;
-        args->getViewFrustum().evalProjectionMatrix(projMat);
-        args->getViewFrustum().evalViewTransform(viewMat);
-        batch.setProjectionTransform(projMat);
-        batch.setViewTransform(viewMat);
-        batch.setModelTransform(Transform());
-
-        // Bind program
-        batch.setPipeline(getPipeline());
-        assert(_cornerLocation >= 0);
-        assert(_scaleLocation >= 0);
-
-        // Render bounds
-        for (const auto& item : items) {
-            batch._glUniform3fv(_cornerLocation, 1, (const float*)(&item.bound.getCorner()));
-            batch._glUniform3fv(_scaleLocation, 1, (const float*)(&item.bound.getScale()));
-
-            static const int NUM_VERTICES_PER_CUBE = 24;
-            batch.draw(gpu::LINES, NUM_VERTICES_PER_CUBE, 0);
-        }
-    });
-}
diff --git a/libraries/render-utils/src/RenderForwardTask.h b/libraries/render-utils/src/RenderForwardTask.h
index a957f7493e..62cbca4382 100755
--- a/libraries/render-utils/src/RenderForwardTask.h
+++ b/libraries/render-utils/src/RenderForwardTask.h
@@ -68,25 +68,4 @@ public:
             const Inputs& background);
 };
 
-class DrawBounds {
-public:
-    class Config : public render::JobConfig {
-    public:
-        Config() : JobConfig(false) {}
-    };
-
-    using Inputs = render::ItemBounds;
-    using JobModel = render::Job::ModelI<DrawBounds, Inputs, Config>;
-
-    void configure(const Config& configuration) {}
-    void run(const render::SceneContextPointer& sceneContext, const render::RenderContextPointer& renderContext,
-            const Inputs& items);
-
-private:
-    const gpu::PipelinePointer getPipeline();
-    gpu::PipelinePointer _boundsPipeline;
-    int _cornerLocation { -1 };
-    int _scaleLocation { -1 };
-};
-
 #endif // hifi_RenderForwardTask_h
diff --git a/libraries/render-utils/src/RenderPipelines.cpp b/libraries/render-utils/src/RenderPipelines.cpp
index b0d676ef78..c5a6c4b6ca 100644
--- a/libraries/render-utils/src/RenderPipelines.cpp
+++ b/libraries/render-utils/src/RenderPipelines.cpp
@@ -34,6 +34,13 @@
 #include "model_normal_map_frag.h"
 #include "model_normal_specular_map_frag.h"
 #include "model_specular_map_frag.h"
+
+#include "forward_model_frag.h"
+#include "forward_model_unlit_frag.h"
+#include "forward_model_normal_map_frag.h"
+#include "forward_model_normal_specular_map_frag.h"
+#include "forward_model_specular_map_frag.h"
+
 #include "model_lightmap_frag.h"
 #include "model_lightmap_normal_map_frag.h"
 #include "model_lightmap_normal_specular_map_frag.h"
@@ -227,11 +234,11 @@ void initForwardPipelines(render::ShapePlumber& plumber) {
     auto skinModelNormalMapVertex = gpu::Shader::createVertex(std::string(skin_model_normal_map_vert));
 
     // Pixel shaders
-    auto modelPixel = gpu::Shader::createPixel(std::string(model_frag));
-    auto modelUnlitPixel = gpu::Shader::createPixel(std::string(model_unlit_frag));
-    auto modelNormalMapPixel = gpu::Shader::createPixel(std::string(model_normal_map_frag));
-    auto modelSpecularMapPixel = gpu::Shader::createPixel(std::string(model_specular_map_frag));
-    auto modelNormalSpecularMapPixel = gpu::Shader::createPixel(std::string(model_normal_specular_map_frag));
+    auto modelPixel = gpu::Shader::createPixel(std::string(forward_model_frag));
+    auto modelUnlitPixel = gpu::Shader::createPixel(std::string(forward_model_unlit_frag));
+    auto modelNormalMapPixel = gpu::Shader::createPixel(std::string(forward_model_normal_map_frag));
+    auto modelSpecularMapPixel = gpu::Shader::createPixel(std::string(forward_model_specular_map_frag));
+    auto modelNormalSpecularMapPixel = gpu::Shader::createPixel(std::string(forward_model_normal_specular_map_frag));
 
     using Key = render::ShapeKey;
     auto addPipeline = std::bind(&addPlumberPipeline, std::ref(plumber), _1, _2, _3);
diff --git a/libraries/render-utils/src/forward_model.slf b/libraries/render-utils/src/forward_model.slf
new file mode 100644
index 0000000000..daeead65ec
--- /dev/null
+++ b/libraries/render-utils/src/forward_model.slf
@@ -0,0 +1,59 @@
+<@include gpu/Config.slh@>
+<$VERSION_HEADER$>
+//  Generated on <$_SCRIBE_DATE$>
+//  model.frag
+//  fragment shader
+//
+//  Created by Andrzej Kapolka on 10/14/13.
+//  Copyright 2013 High Fidelity, Inc.
+//
+//  Distributed under the Apache License, Version 2.0.
+//  See the accompanying file LICENSE or http://www.apache.org/licenses/LICENSE-2.0.html
+//
+
+<@include DeferredBufferWrite.slh@>
+
+<@include model/Material.slh@>
+
+<@include MaterialTextures.slh@>
+<$declareMaterialTextures(ALBEDO, ROUGHNESS, _SCRIBE_NULL, _SCRIBE_NULL, EMISSIVE, OCCLUSION)$>
+
+in vec4 _position;
+in vec3 _normal;
+in vec3 _color;
+in vec2 _texCoord0;
+in vec2 _texCoord1;
+
+
+void main(void) {
+    Material mat = getMaterial();
+    int matKey = getMaterialKey(mat);
+    <$fetchMaterialTexturesCoord0(matKey, _texCoord0, albedoTex, roughnessTex, _SCRIBE_NULL, _SCRIBE_NULL, emissiveTex)$>
+    <$fetchMaterialTexturesCoord1(matKey, _texCoord1, occlusionTex)$>
+
+    float opacity = 1.0;
+    <$evalMaterialOpacity(albedoTex.a, opacity, matKey, opacity)$>;
+    <$discardTransparent(opacity)$>;
+
+    vec3 albedo = getMaterialAlbedo(mat);
+    <$evalMaterialAlbedo(albedoTex, albedo, matKey, albedo)$>;
+    albedo *= _color;
+
+    float roughness = getMaterialRoughness(mat);
+    <$evalMaterialRoughness(roughnessTex, roughness, matKey, roughness)$>;
+
+    vec3 emissive = getMaterialEmissive(mat);
+    <$evalMaterialEmissive(emissiveTex, emissive, matKey, emissive)$>;
+
+    float scattering = getMaterialScattering(mat);
+
+    packDeferredFragment(
+        normalize(_normal.xyz), 
+        opacity,
+        albedo,
+        roughness,
+        getMaterialMetallic(mat),
+        emissive,
+        occlusionTex,
+        scattering);
+}
diff --git a/libraries/render-utils/src/forward_model_normal_map.slf b/libraries/render-utils/src/forward_model_normal_map.slf
new file mode 100644
index 0000000000..3acdedab2a
--- /dev/null
+++ b/libraries/render-utils/src/forward_model_normal_map.slf
@@ -0,0 +1,64 @@
+<@include gpu/Config.slh@>
+<$VERSION_HEADER$>
+//  Generated on <$_SCRIBE_DATE$>
+//
+//  model_normal_map.frag
+//  fragment shader
+//
+//  Created by Andrzej Kapolka on 10/29/13.
+//  Copyright 2013 High Fidelity, Inc.
+//
+//  Distributed under the Apache License, Version 2.0.
+//  See the accompanying file LICENSE or http://www.apache.org/licenses/LICENSE-2.0.html
+//
+
+<@include DeferredBufferWrite.slh@>
+
+<@include model/Material.slh@>
+
+<@include MaterialTextures.slh@>
+<$declareMaterialTextures(ALBEDO, ROUGHNESS, NORMAL, _SCRIBE_NULL, EMISSIVE, OCCLUSION, SCATTERING)$>
+
+in vec4 _position;
+in vec2 _texCoord0;
+in vec2 _texCoord1;
+in vec3 _normal;
+in vec3 _tangent;
+in vec3 _color;
+
+void main(void) {
+    Material mat = getMaterial();
+    int matKey = getMaterialKey(mat);
+    <$fetchMaterialTexturesCoord0(matKey, _texCoord0, albedoTex, roughnessTex, normalTex, _SCRIBE_NULL, emissiveTex, scatteringTex)$>
+    <$fetchMaterialTexturesCoord1(matKey, _texCoord1, occlusionTex)$>
+
+    float opacity = 1.0;
+    <$evalMaterialOpacity(albedoTex.a, opacity, matKey, opacity)$>;
+    <$discardTransparent(opacity)$>;
+
+    vec3 albedo = getMaterialAlbedo(mat);
+    <$evalMaterialAlbedo(albedoTex, albedo, matKey, albedo)$>;
+    albedo *= _color;
+
+    float roughness = getMaterialRoughness(mat);
+    <$evalMaterialRoughness(roughnessTex, roughness, matKey, roughness)$>;
+
+    vec3 emissive = getMaterialEmissive(mat);
+    <$evalMaterialEmissive(emissiveTex, emissive, matKey, emissive)$>;
+
+    vec3 viewNormal;
+    <$tangentToViewSpace(normalTex, _normal, _tangent, viewNormal)$>
+
+    float scattering = getMaterialScattering(mat);
+    <$evalMaterialScattering(scatteringTex, scattering, matKey, scattering)$>;
+
+    packDeferredFragment(
+        viewNormal, 
+        opacity,
+        albedo,
+        roughness,
+        getMaterialMetallic(mat),
+        emissive,
+        occlusionTex,
+        scattering);
+}
diff --git a/libraries/render-utils/src/forward_model_normal_specular_map.slf b/libraries/render-utils/src/forward_model_normal_specular_map.slf
new file mode 100644
index 0000000000..d5dd607b8f
--- /dev/null
+++ b/libraries/render-utils/src/forward_model_normal_specular_map.slf
@@ -0,0 +1,66 @@
+<@include gpu/Config.slh@>
+<$VERSION_HEADER$>
+//  Generated on <$_SCRIBE_DATE$>
+//
+//  model_normal_specular_map.frag
+//  fragment shader
+//
+//  Created by Andrzej Kapolka on 5/6/14.
+//  Copyright 2014 High Fidelity, Inc.
+//
+//  Distributed under the Apache License, Version 2.0.
+//  See the accompanying file LICENSE or http://www.apache.org/licenses/LICENSE-2.0.html
+//
+
+<@include DeferredBufferWrite.slh@>
+
+<@include model/Material.slh@>
+
+<@include MaterialTextures.slh@>
+<$declareMaterialTextures(ALBEDO, ROUGHNESS, NORMAL, METALLIC, EMISSIVE, OCCLUSION)$>
+
+in vec4 _position;
+in vec2 _texCoord0;
+in vec2 _texCoord1;
+in vec3 _normal;
+in vec3 _tangent;
+in vec3 _color;
+
+void main(void) {
+    Material mat = getMaterial();
+    int matKey = getMaterialKey(mat);
+    <$fetchMaterialTexturesCoord0(matKey, _texCoord0, albedoTex, roughnessTex, normalTex, metallicTex, emissiveTex)$>
+    <$fetchMaterialTexturesCoord1(matKey, _texCoord1, occlusionTex)$>
+
+    float opacity = 1.0;
+    <$evalMaterialOpacity(albedoTex.a, opacity, matKey, opacity)&>;
+    <$discardTransparent(opacity)$>;
+
+    vec3 albedo = getMaterialAlbedo(mat);
+    <$evalMaterialAlbedo(albedoTex, albedo, matKey, albedo)$>;
+    albedo *= _color;
+
+    float roughness = getMaterialRoughness(mat);
+    <$evalMaterialRoughness(roughnessTex, roughness, matKey, roughness)$>;
+
+    vec3 emissive = getMaterialEmissive(mat);
+    <$evalMaterialEmissive(emissiveTex, emissive, matKey, emissive)$>;
+
+    vec3 viewNormal;
+    <$tangentToViewSpace(normalTex, _normal, _tangent, viewNormal)$>
+
+    float metallic = getMaterialMetallic(mat);
+    <$evalMaterialMetallic(metallicTex, metallic, matKey, metallic)$>;
+
+    float scattering = getMaterialScattering(mat);
+
+    packDeferredFragment(
+        normalize(viewNormal.xyz), 
+        opacity,
+        albedo,
+        roughness,
+        metallic,
+        emissive,
+        occlusionTex,
+        scattering);
+}
diff --git a/libraries/render-utils/src/forward_model_specular_map.slf b/libraries/render-utils/src/forward_model_specular_map.slf
new file mode 100644
index 0000000000..47b5e3389d
--- /dev/null
+++ b/libraries/render-utils/src/forward_model_specular_map.slf
@@ -0,0 +1,63 @@
+<@include gpu/Config.slh@>
+<$VERSION_HEADER$>
+//  Generated on <$_SCRIBE_DATE$>
+//
+//  model_specular_map.frag
+//  fragment shader
+//
+//  Created by Andrzej Kapolka on 5/6/14.
+//  Copyright 2014 High Fidelity, Inc.
+//
+//  Distributed under the Apache License, Version 2.0.
+//  See the accompanying file LICENSE or http://www.apache.org/licenses/LICENSE-2.0.html
+//
+
+<@include DeferredBufferWrite.slh@>
+
+<@include model/Material.slh@>
+
+<@include MaterialTextures.slh@>
+<$declareMaterialTextures(ALBEDO, ROUGHNESS, _SCRIBE_NULL, METALLIC, EMISSIVE, OCCLUSION)$>
+
+in vec4 _position;
+in vec2 _texCoord0;
+in vec2 _texCoord1;
+in vec3 _normal;
+in vec3 _color;
+
+
+void main(void) {
+    Material mat = getMaterial();
+    int matKey = getMaterialKey(mat);
+    <$fetchMaterialTexturesCoord0(matKey, _texCoord0, albedoTex, roughnessTex, _SCRIBE_NULL, metallicTex, emissiveTex)$>
+    <$fetchMaterialTexturesCoord1(matKey, _texCoord1, occlusionTex)$>
+
+    float opacity = 1.0;
+    <$evalMaterialOpacity(albedoTex.a, opacity, matKey, opacity)$>;
+    <$discardTransparent(opacity)$>;
+
+    vec3 albedo = getMaterialAlbedo(mat);
+    <$evalMaterialAlbedo(albedoTex, albedo, matKey, albedo)$>;
+    albedo *= _color;
+
+    float roughness = getMaterialRoughness(mat);
+    <$evalMaterialRoughness(roughnessTex, roughness, matKey, roughness)$>;
+
+    vec3 emissive = getMaterialEmissive(mat);
+    <$evalMaterialEmissive(emissiveTex, emissive, matKey, emissive)$>;
+
+    float metallic = getMaterialMetallic(mat);
+    <$evalMaterialMetallic(metallicTex, metallic, matKey, metallic)$>;
+
+    float scattering = getMaterialScattering(mat);
+
+    packDeferredFragment(
+        normalize(_normal), 
+        opacity,
+        albedo,
+        roughness,
+        metallic,
+        emissive,
+        occlusionTex,
+        scattering);
+}
diff --git a/libraries/render-utils/src/forward_model_unlit.slf b/libraries/render-utils/src/forward_model_unlit.slf
new file mode 100644
index 0000000000..750b51fe8c
--- /dev/null
+++ b/libraries/render-utils/src/forward_model_unlit.slf
@@ -0,0 +1,45 @@
+<@include gpu/Config.slh@>
+<$VERSION_HEADER$>
+//  Generated on <$_SCRIBE_DATE$>
+//
+//  material_opaque_unlit.frag
+//  fragment shader
+//
+//  Created by Sam Gateau on 5/5/2016.
+//  Copyright 2016 High Fidelity, Inc.
+//
+//  Distributed under the Apache License, Version 2.0.
+//  See the accompanying file LICENSE or http://www.apache.org/licenses/LICENSE-2.0.html
+//
+
+<@include DeferredBufferWrite.slh@>
+<@include LightingModel.slh@>
+<@include model/Material.slh@>
+
+<@include MaterialTextures.slh@>
+<$declareMaterialTextures(ALBEDO)$>
+
+in vec2 _texCoord0;
+in vec3 _normal;
+in vec3 _color;
+in float _alpha;
+
+void main(void) {
+
+    Material mat = getMaterial();
+    int matKey = getMaterialKey(mat);
+    <$fetchMaterialTexturesCoord0(matKey, _texCoord0, albedoTex)$>
+
+    float opacity = 1.0;
+    <$evalMaterialOpacity(albedoTex.a, opacity, matKey, opacity)$>;
+    <$discardTransparent(opacity)$>;
+
+    vec3 albedo = getMaterialAlbedo(mat);
+    <$evalMaterialAlbedo(albedoTex, albedo, matKey, albedo)$>;
+    albedo *= _color;
+
+    packDeferredFragmentUnlit(
+        normalize(_normal), 
+        opacity,
+        albedo * isUnlitEnabled());
+}
diff --git a/libraries/render/src/render/CullTask.h b/libraries/render/src/render/CullTask.h
index 56729083dd..1a709ed102 100644
--- a/libraries/render/src/render/CullTask.h
+++ b/libraries/render/src/render/CullTask.h
@@ -170,7 +170,6 @@ namespace render {
                 for (size_t i = 0; i < NUM_FILTERS; i++) {
                     if (_filters[i].test(itemKey)) {
                         outItems[i].template edit<ItemBounds>().emplace_back(itemBound);
-                        break;
                     }
                 }
             }
diff --git a/libraries/render/src/render/DrawTask.cpp b/libraries/render/src/render/DrawTask.cpp
index 1c9a92c511..2829c6f8e7 100755
--- a/libraries/render/src/render/DrawTask.cpp
+++ b/libraries/render/src/render/DrawTask.cpp
@@ -19,6 +19,10 @@
 #include <ViewFrustum.h>
 #include <gpu/Context.h>
 
+
+#include <drawItemBounds_vert.h>
+#include <drawItemBounds_frag.h>
+
 using namespace render;
 
 void render::renderItems(const SceneContextPointer& sceneContext, const RenderContextPointer& renderContext, const ItemBounds& inItems, int maxDrawnItems) {
@@ -134,3 +138,59 @@ void DrawLight::run(const SceneContextPointer& sceneContext, const RenderContext
     auto config = std::static_pointer_cast<Config>(renderContext->jobConfig);
     config->setNumDrawn((int)inLights.size());
 }
+
+const gpu::PipelinePointer DrawBounds::getPipeline() {
+    if (!_boundsPipeline) {
+        auto vs = gpu::Shader::createVertex(std::string(drawItemBounds_vert));
+        auto ps = gpu::Shader::createPixel(std::string(drawItemBounds_frag));
+        gpu::ShaderPointer program = gpu::Shader::createProgram(vs, ps);
+
+        gpu::Shader::BindingSet slotBindings;
+        gpu::Shader::makeProgram(*program, slotBindings);
+
+        _cornerLocation = program->getUniforms().findLocation("inBoundPos");
+        _scaleLocation = program->getUniforms().findLocation("inBoundDim");
+
+        auto state = std::make_shared<gpu::State>();
+        state->setDepthTest(true, false, gpu::LESS_EQUAL);
+        state->setBlendFunction(true,
+            gpu::State::SRC_ALPHA, gpu::State::BLEND_OP_ADD, gpu::State::INV_SRC_ALPHA,
+            gpu::State::DEST_ALPHA, gpu::State::BLEND_OP_ADD, gpu::State::ZERO);
+
+        _boundsPipeline = gpu::Pipeline::create(program, state);
+    }
+    return _boundsPipeline;
+}
+
+void DrawBounds::run(const SceneContextPointer& sceneContext, const RenderContextPointer& renderContext,
+    const Inputs& items) {
+    RenderArgs* args = renderContext->args;
+
+    gpu::doInBatch(args->_context, [&](gpu::Batch& batch) {
+        args->_batch = &batch;
+
+        // Setup projection
+        glm::mat4 projMat;
+        Transform viewMat;
+        args->getViewFrustum().evalProjectionMatrix(projMat);
+        args->getViewFrustum().evalViewTransform(viewMat);
+        batch.setProjectionTransform(projMat);
+        batch.setViewTransform(viewMat);
+        batch.setModelTransform(Transform());
+
+        // Bind program
+        batch.setPipeline(getPipeline());
+        assert(_cornerLocation >= 0);
+        assert(_scaleLocation >= 0);
+
+        // Render bounds
+        for (const auto& item : items) {
+            batch._glUniform3fv(_cornerLocation, 1, (const float*)(&item.bound.getCorner()));
+            batch._glUniform3fv(_scaleLocation, 1, (const float*)(&item.bound.getScale()));
+
+            static const int NUM_VERTICES_PER_CUBE = 24;
+            batch.draw(gpu::LINES, NUM_VERTICES_PER_CUBE, 0);
+        }
+    });
+}
+
diff --git a/libraries/render/src/render/DrawTask.h b/libraries/render/src/render/DrawTask.h
index aa564980c4..27f07921c3 100755
--- a/libraries/render/src/render/DrawTask.h
+++ b/libraries/render/src/render/DrawTask.h
@@ -50,6 +50,27 @@ protected:
     int _maxDrawn; // initialized by Config
 };
 
+class DrawBounds {
+public:
+    class Config : public render::JobConfig {
+    public:
+        Config() : JobConfig(false) {}
+    };
+
+    using Inputs = render::ItemBounds;
+    using JobModel = render::Job::ModelI<DrawBounds, Inputs, Config>;
+
+    void configure(const Config& configuration) {}
+    void run(const render::SceneContextPointer& sceneContext, const render::RenderContextPointer& renderContext,
+        const Inputs& items);
+
+private:
+    const gpu::PipelinePointer getPipeline();
+    gpu::PipelinePointer _boundsPipeline;
+    int _cornerLocation { -1 };
+    int _scaleLocation { -1 };
+};
+
 }
 
 #endif // hifi_render_DrawTask_h
diff --git a/libraries/render/src/render/Item.h b/libraries/render/src/render/Item.h
index 9a65b48021..551b48fd7d 100644
--- a/libraries/render/src/render/Item.h
+++ b/libraries/render/src/render/Item.h
@@ -38,6 +38,7 @@ public:
     enum FlagBit {
         TYPE_SHAPE = 0,   // Item is a Shape
         TYPE_LIGHT,       // Item is a Light
+        TYPE_META,        // Item is a Meta: meanning it s used to represent a higher level object, potentially represented by other render items
         TRANSLUCENT,      // Transparent and not opaque, for some odd reason TRANSPARENCY doesn't work...
         VIEW_SPACE,       // Transformed in view space, and not in world space
         DYNAMIC,          // Dynamic and bound will change unlike static item
@@ -72,6 +73,7 @@ public:
 
         Builder& withTypeShape() { _flags.set(TYPE_SHAPE); return (*this); }
         Builder& withTypeLight() { _flags.set(TYPE_LIGHT); return (*this); }
+        Builder& withTypeMeta() { _flags.set(TYPE_META); return (*this); }
         Builder& withTransparent() { _flags.set(TRANSLUCENT); return (*this); }
         Builder& withViewSpace() { _flags.set(VIEW_SPACE); return (*this); }
         Builder& withDynamic() { _flags.set(DYNAMIC); return (*this); }
@@ -91,6 +93,7 @@ public:
 
     bool isShape() const { return _flags[TYPE_SHAPE]; }
     bool isLight() const { return _flags[TYPE_LIGHT]; }
+    bool isMeta() const { return _flags[TYPE_META]; }
 
     bool isOpaque() const { return !_flags[TRANSLUCENT]; }
     bool isTransparent() const { return _flags[TRANSLUCENT]; }
@@ -150,6 +153,7 @@ public:
 
         Builder& withTypeShape()        { _value.set(ItemKey::TYPE_SHAPE); _mask.set(ItemKey::TYPE_SHAPE); return (*this); }
         Builder& withTypeLight()        { _value.set(ItemKey::TYPE_LIGHT); _mask.set(ItemKey::TYPE_LIGHT); return (*this); }
+        Builder& withTypeMeta()         { _value.set(ItemKey::TYPE_META); _mask.set(ItemKey::TYPE_META); return (*this); }
 
         Builder& withOpaque()           { _value.reset(ItemKey::TRANSLUCENT); _mask.set(ItemKey::TRANSLUCENT); return (*this); }
         Builder& withTransparent()      { _value.set(ItemKey::TRANSLUCENT); _mask.set(ItemKey::TRANSLUCENT); return (*this); }
@@ -179,6 +183,7 @@ public:
         static Builder opaqueShape() { return Builder().withTypeShape().withOpaque().withWorldSpace(); }
         static Builder transparentShape() { return Builder().withTypeShape().withTransparent().withWorldSpace(); }
         static Builder light() { return Builder().withTypeLight(); }
+        static Builder meta() { return Builder().withTypeMeta(); }
         static Builder background() { return Builder().withViewSpace().withLayered(); }
         static Builder opaqueShapeLayered() { return Builder().withTypeShape().withOpaque().withWorldSpace().withLayered(); }
         static Builder transparentShapeLayered() { return Builder().withTypeShape().withTransparent().withWorldSpace().withLayered(); }
@@ -210,6 +215,25 @@ inline QDebug operator<<(QDebug debug, const ItemFilter& me) {
 using ItemID = uint32_t;
 using ItemCell = int32_t;
 
+// A few typedefs for standard containers of ItemIDs
+using ItemIDs = std::vector<ItemID>;
+using ItemIDSet = std::set<ItemID>;
+
+// Handy type to just pass the ID and the bound of an item
+class ItemBound {
+    public:
+        ItemBound(ItemID id) : id(id) { }
+        ItemBound(ItemID id, const AABox& bound) : id(id), bound(bound) { }
+
+        ItemID id;
+        AABox bound;
+};
+
+// many Item Bounds in a vector
+using ItemBounds = std::vector<ItemBound>;
+
+// Item is the proxy to a bounded "object" in the scene
+// An item is described by its Key
 class Item {
 public:
     typedef std::vector<Item> Vector;
@@ -295,6 +319,8 @@ public:
 
         virtual const ShapeKey getShapeKey() const = 0;
 
+        virtual uint32_t fetchMetaSubItems(ItemIDs& subItems) const = 0;
+
         ~PayloadInterface() {}
 
         // Status interface is local to the base class
@@ -313,6 +339,9 @@ public:
     Item() {}
     ~Item() {}
 
+    // Item exists if it has a valid payload
+    bool exist() const { return (bool)(_payload); }
+
     // Main scene / item managment interface reset/update/kill
     void resetPayload(const PayloadPointer& payload);
     void resetCell(ItemCell cell = INVALID_CELL, bool _small = false) { _cell = cell; _key.setSmaller(_small); }
@@ -339,6 +368,9 @@ public:
     // Shape Type Interface
     const ShapeKey getShapeKey() const { return _payload->getShapeKey(); }
 
+    // Meta Type Interface
+    uint32_t fetchMetaSubItems(ItemIDs& subItems) const { return _payload->fetchMetaSubItems(subItems); }
+
     // Access the status
     const StatusPointer& getStatus() const { return _payload->getStatus(); }
 
@@ -370,10 +402,7 @@ inline QDebug operator<<(QDebug debug, const Item& item) {
     return debug;
 }
 
-// THe Payload class is the real Payload to be used
-// THis allow anything to be turned into a Payload as long as the required interface functions are available
-// When creating a new kind of payload from a new "stuff" class then you need to create specialized version for "stuff"
-// of the Payload interface
+// Item shared interface supported by the payload
 template <class T> const ItemKey payloadGetKey(const std::shared_ptr<T>& payloadData) { return ItemKey(); }
 template <class T> const Item::Bound payloadGetBound(const std::shared_ptr<T>& payloadData) { return Item::Bound(); }
 template <class T> int payloadGetLayer(const std::shared_ptr<T>& payloadData) { return 0; }
@@ -385,6 +414,14 @@ template <class T> void payloadRender(const std::shared_ptr<T>& payloadData, Ren
 // implying that the shape will setup its own pipeline without the use of the ShapeKey.
 template <class T> const ShapeKey shapeGetShapeKey(const std::shared_ptr<T>& payloadData) { return ShapeKey::Builder::ownPipeline(); }
 
+// Meta Type Interface
+// Meta items act as the grouping object for several sub items (typically shapes).
+template <class T> uint32_t metaFetchMetaSubItems(const std::shared_ptr<T>& payloadData, ItemIDs& subItems) { return 0; }
+
+// THe Payload class is the real Payload to be used
+// THis allow anything to be turned into a Payload as long as the required interface functions are available
+// When creating a new kind of payload from a new "stuff" class then you need to create specialized version for "stuff"
+// of the Payload interface
 template <class T> class Payload : public Item::PayloadInterface {
 public:
     typedef std::shared_ptr<T> DataPointer;
@@ -403,6 +440,9 @@ public:
     // Shape Type interface
     virtual const ShapeKey getShapeKey() const override { return shapeGetShapeKey<T>(_data); }
 
+    // Meta Type Interface
+    virtual uint32_t fetchMetaSubItems(ItemIDs& subItems) const override { return metaFetchMetaSubItems<T>(_data, subItems); }
+
 protected:
     DataPointer _data;
 
@@ -450,22 +490,6 @@ template <> const Item::Bound payloadGetBound(const FooPointer& foo) {
 typedef Item::PayloadPointer PayloadPointer;
 typedef std::vector< PayloadPointer > Payloads;
 
-// A few typedefs for standard containers of ItemIDs
-using ItemIDs = std::vector<ItemID>;
-using ItemIDSet = std::set<ItemID>;
-
-// Handy type to just pass the ID and the bound of an item
-class ItemBound {
-public:
-    ItemBound(ItemID id) : id(id) { }
-    ItemBound(ItemID id, const AABox& bound) : id(id), bound(bound) { }
-
-    ItemID id;
-    AABox bound;
-};
-// many Item Bounds in a vector
-using ItemBounds = std::vector<ItemBound>;
-
 // A map of items by ShapeKey to optimize rendering pipeline assignments
 using ShapeBounds = std::unordered_map<ShapeKey, ItemBounds, ShapeKey::Hash, ShapeKey::KeyEqual>;
 
diff --git a/libraries/render/src/render/RenderFetchCullSortTask.cpp b/libraries/render/src/render/RenderFetchCullSortTask.cpp
index 3195d8c5f8..69c415dffd 100644
--- a/libraries/render/src/render/RenderFetchCullSortTask.cpp
+++ b/libraries/render/src/render/RenderFetchCullSortTask.cpp
@@ -29,33 +29,41 @@ RenderFetchCullSortTask::RenderFetchCullSortTask(CullFunctor cullFunctor) {
     const auto nonspatialSelection = addJob<FetchNonspatialItems>("FetchOverlaySelection");
 
     // Multi filter visible items into different buckets
-    const int NUM_FILTERS = 3;
+    const int NUM_SPATIAL_FILTERS = 4; 
+    const int NUM_NON_SPATIAL_FILTERS = 3;
     const int OPAQUE_SHAPE_BUCKET = 0;
     const int TRANSPARENT_SHAPE_BUCKET = 1;
     const int LIGHT_BUCKET = 2;
+    const int META_BUCKET = 3;
     const int BACKGROUND_BUCKET = 2;
-    MultiFilterItem<NUM_FILTERS>::ItemFilterArray spatialFilters = { {
+    MultiFilterItem<NUM_SPATIAL_FILTERS>::ItemFilterArray spatialFilters = { {
             ItemFilter::Builder::opaqueShape(),
             ItemFilter::Builder::transparentShape(),
-            ItemFilter::Builder::light()
+            ItemFilter::Builder::light(),
+            ItemFilter::Builder::meta()
         } };
-    MultiFilterItem<NUM_FILTERS>::ItemFilterArray nonspatialFilters = { {
+    MultiFilterItem<NUM_NON_SPATIAL_FILTERS>::ItemFilterArray nonspatialFilters = { {
             ItemFilter::Builder::opaqueShape(),
             ItemFilter::Builder::transparentShape(),
             ItemFilter::Builder::background()
         } };
-    const auto filteredSpatialBuckets = addJob<MultiFilterItem<NUM_FILTERS>>("FilterSceneSelection", culledSpatialSelection, spatialFilters).get<MultiFilterItem<NUM_FILTERS>::ItemBoundsArray>();
-    const auto filteredNonspatialBuckets = addJob<MultiFilterItem<NUM_FILTERS>>("FilterOverlaySelection", nonspatialSelection, nonspatialFilters).get<MultiFilterItem<NUM_FILTERS>::ItemBoundsArray>();
+    const auto filteredSpatialBuckets = 
+        addJob<MultiFilterItem<NUM_SPATIAL_FILTERS>>("FilterSceneSelection", culledSpatialSelection, spatialFilters)
+            .get<MultiFilterItem<NUM_SPATIAL_FILTERS>::ItemBoundsArray>();
+    const auto filteredNonspatialBuckets = 
+        addJob<MultiFilterItem<NUM_NON_SPATIAL_FILTERS>>("FilterOverlaySelection", nonspatialSelection, nonspatialFilters)
+            .get<MultiFilterItem<NUM_NON_SPATIAL_FILTERS>::ItemBoundsArray>();
 
     // Extract opaques / transparents / lights / overlays
     const auto opaques = addJob<DepthSortItems>("DepthSortOpaque", filteredSpatialBuckets[OPAQUE_SHAPE_BUCKET]);
     const auto transparents = addJob<DepthSortItems>("DepthSortTransparent", filteredSpatialBuckets[TRANSPARENT_SHAPE_BUCKET], DepthSortItems(false));
     const auto lights = filteredSpatialBuckets[LIGHT_BUCKET];
+    const auto metas = filteredSpatialBuckets[META_BUCKET];
 
     const auto overlayOpaques = addJob<DepthSortItems>("DepthSortOverlayOpaque", filteredNonspatialBuckets[OPAQUE_SHAPE_BUCKET]);
     const auto overlayTransparents = addJob<DepthSortItems>("DepthSortOverlayTransparent", filteredNonspatialBuckets[TRANSPARENT_SHAPE_BUCKET], DepthSortItems(false));
     const auto background = filteredNonspatialBuckets[BACKGROUND_BUCKET];
 
     setOutput(Output{{
-            opaques, transparents, lights, overlayOpaques, overlayTransparents, background, spatialSelection }});
+            opaques, transparents, lights, metas, overlayOpaques, overlayTransparents, background, spatialSelection }});
 }
diff --git a/libraries/render/src/render/RenderFetchCullSortTask.h b/libraries/render/src/render/RenderFetchCullSortTask.h
index bea45247b0..1af74939c9 100644
--- a/libraries/render/src/render/RenderFetchCullSortTask.h
+++ b/libraries/render/src/render/RenderFetchCullSortTask.h
@@ -19,7 +19,21 @@
 
 class RenderFetchCullSortTask : public render::Task {
 public:
-    using Output = std::array<render::Varying, 7>;
+
+    enum Buckets {
+        OPAQUE_SHAPE = 0,
+        TRANSPARENT_SHAPE,
+        LIGHT,
+        META,
+        OVERLAY_OPAQUE_SHAPE,
+        OVERLAY_TRANSPARENT_SHAPE,
+        BACKGROUND,
+        SPATIAL_SELECTION,
+
+        NUM_BUCKETS
+    };
+
+    using Output = std::array<render::Varying, Buckets::NUM_BUCKETS>;
     using JobModel = ModelO<RenderFetchCullSortTask>;
 
     RenderFetchCullSortTask(render::CullFunctor cullFunctor);
diff --git a/libraries/render/src/render/Scene.cpp b/libraries/render/src/render/Scene.cpp
index 95fef3e9f0..076879ae25 100644
--- a/libraries/render/src/render/Scene.cpp
+++ b/libraries/render/src/render/Scene.cpp
@@ -58,7 +58,7 @@ ItemID Scene::allocateID() {
     return _IDAllocator.fetch_add(1);
 }
 
-bool Scene::isAllocatedID(const ItemID& id) {
+bool Scene::isAllocatedID(const ItemID& id) const {
     return Item::isValidID(id) && (id < _numAllocatedItems.load());
 }
 
diff --git a/libraries/render/src/render/Scene.h b/libraries/render/src/render/Scene.h
index 13475d0556..f2f8403dc9 100644
--- a/libraries/render/src/render/Scene.h
+++ b/libraries/render/src/render/Scene.h
@@ -61,7 +61,7 @@ public:
     ItemID allocateID();
 
     // Check that the ID is valid and allocated for this scene, this a threadsafe call
-    bool isAllocatedID(const ItemID& id);
+    bool isAllocatedID(const ItemID& id) const;
 
     // THis is the total number of allocated items, this a threadsafe call
     size_t getNumItems() const { return _numAllocatedItems.load(); }
@@ -78,6 +78,9 @@ public:
     // WARNING, There is No check on the validity of the ID, so this could return a bad Item
     const Item& getItem(const ItemID& id) const { return _items[id]; }
 
+    // Same as getItem, checking if the id is valid
+    const Item getItemSafe(const ItemID& id) const { if (isAllocatedID(id)) { return _items[id]; } else { return Item(); } }
+
     // Access the spatialized items
     const ItemSpatialTree& getSpatialTree() const { return _masterSpatialTree; }
 
diff --git a/scripts/developer/tests/ambientSoundTest.js b/scripts/developer/tests/ambientSoundTest.js
new file mode 100644
index 0000000000..5b373715c0
--- /dev/null
+++ b/scripts/developer/tests/ambientSoundTest.js
@@ -0,0 +1,19 @@
+var WAVE = 'http://cdn.rawgit.com/ambisonictoolkit/atk-sounds/aa31005c/stereo/Aurora_Surgit-Lux_Aeterna.wav';
+var uuid = Entities.addEntity({
+    type: "Shape",
+    shape: "Icosahedron",
+    dimensions: Vec3.HALF,
+    script: Script.resolvePath('../../tutorials/entity_scripts/ambientSound.js'),
+    position: Vec3.sum(Vec3.multiply(5, Quat.getFront(MyAvatar.orientation)), MyAvatar.position),
+    userData: JSON.stringify({
+        soundURL: WAVE,
+        maxVolume: 0.1,
+        range: 25,
+        disabled: true,
+        grabbableKey: { wantsTrigger: true },
+    }),
+    lifetime: 600,
+});
+Script.scriptEnding.connect(function() {
+    Entities.deleteEntity(uuid);
+});
diff --git a/scripts/developer/utilities/render/debugDeferredLighting.js b/scripts/developer/utilities/render/debugDeferredLighting.js
index b32a924c10..625f71f8a4 100644
--- a/scripts/developer/utilities/render/debugDeferredLighting.js
+++ b/scripts/developer/utilities/render/debugDeferredLighting.js
@@ -13,7 +13,7 @@ var qml = Script.resolvePath('deferredLighting.qml');
 var window = new OverlayWindow({
     title: 'Lighting',
     source: qml,
-    width: 400, height:220,
+    width: 400, height:280,
 });
 window.setPosition(Window.innerWidth - 420, 50);
 window.closed.connect(function() { Script.stop(); });
diff --git a/scripts/developer/utilities/render/deferredLighting.qml b/scripts/developer/utilities/render/deferredLighting.qml
index 4901be8e03..26dbc1f2bc 100644
--- a/scripts/developer/utilities/render/deferredLighting.qml
+++ b/scripts/developer/utilities/render/deferredLighting.qml
@@ -74,7 +74,7 @@ Column {
     Column {
         spacing: 10 
         Repeater {
-            model: [ "Tone Mapping exposure:ToneMapping:exposure:5.0:-5.0"
+            model: [ "Tone Mapping Exposure:ToneMapping:exposure:5.0:-5.0"
                           ]
             ConfigSlider {
                     label: qsTr(modelData.split(":")[0])
@@ -88,7 +88,7 @@ Column {
 
         Row {
             Label {
-                text: "Debug Framebuffer"
+                text: "Tone Mapping Curve"
                 anchors.left: root.left           
             }
 
@@ -109,6 +109,7 @@ Column {
     }
     Row {
         id: framebuffer
+        spacing: 10 
 
         Label {
             text: "Debug Framebuffer"
@@ -156,5 +157,14 @@ Column {
             onCurrentIndexChanged: { framebuffer.setDebugMode(currentIndex) }
         }
     }
+
+    Row {
+        id: metas
+        CheckBox {
+            text: "Draw Meta Bounds"
+            checked: Render.getConfig("DrawMetaBounds")["enabled"]
+            onCheckedChanged: { Render.getConfig("DrawMetaBounds")["enabled"] = checked }
+        }
+    }
 }
 
diff --git a/scripts/system/html/js/marketplacesInject.js b/scripts/system/html/js/marketplacesInject.js
index 0944c4113e..d5f0f4cb06 100644
--- a/scripts/system/html/js/marketplacesInject.js
+++ b/scripts/system/html/js/marketplacesInject.js
@@ -148,7 +148,6 @@
                 if (!canWriteAssets) {
                     console.log("ERROR: Clara.io FBX: File download cancelled because no permissions to write to Asset Server");
                     EventBridge.emitWebEvent(WARN_USER_NO_PERMISSIONS);
-                    event.stopPropagation();
                     return;
                 }
 
diff --git a/scripts/system/pal.js b/scripts/system/pal.js
index 2430ce6e87..c61dbba872 100644
--- a/scripts/system/pal.js
+++ b/scripts/system/pal.js
@@ -498,7 +498,6 @@ function getAudioLevel(id) {
     var audioLevel = 0.0;
     var data = id ? ExtendedOverlay.get(id) : myData;
     if (!data) {
-        print('no data for', id);
         return audioLevel;
     }
 
diff --git a/scripts/tutorials/entity_scripts/ambientSound.js b/scripts/tutorials/entity_scripts/ambientSound.js
index 620b371400..e0a7d0a3cf 100644
--- a/scripts/tutorials/entity_scripts/ambientSound.js
+++ b/scripts/tutorials/entity_scripts/ambientSound.js
@@ -1,34 +1,48 @@
 //  ambientSound.js
 //
 //  This entity script will allow you to create an ambient sound that loops when a person is within a given
-//  range of this entity.  Great way to add one or more ambisonic soundfields to your environment.  
+//  range of this entity.  Great way to add one or more ambisonic soundfields to your environment.
 //
-//  In the userData section for the entity, add/edit three values:  
-//      userData.soundURL should be a string giving the URL to the sound file.  Defaults to 100 meters if not set.  
+//  In the userData section for the entity, add/edit three values:
+//      userData.soundURL should be a string giving the URL to the sound file.  Defaults to 100 meters if not set.
 //      userData.range should be an integer for the max distance away from the entity where the sound will be audible.
-//      userData.volume is the max volume at which the clip should play.  Defaults to 1.0 full volume)
+//      userData.maxVolume is the max volume at which the clip should play.  Defaults to 1.0 full volume.
+//      userData.disabled is an optionanl boolean flag which can be used to disable the ambient sound. Defaults to false.
+//
+//  The rotation of the entity is copied to the ambisonic field, so by rotating the entity you will rotate the
+//  direction in-which a certain sound comes from.
 //
-//  The rotation of the entity is copied to the ambisonic field, so by rotating the entity you will rotate the 
-//  direction in-which a certain sound comes from.  
-//  
 //  Remember that the entity has to be visible to the user for the sound to play at all, so make sure the entity is
-//  large enough to be loaded at the range you set, particularly for large ranges.  
-//   
+//  large enough to be loaded at the range you set, particularly for large ranges.
+//
 //  Copyright 2016 High Fidelity, Inc.
 //
 //  Distributed under the Apache License, Version 2.0.
 //  See the accompanying file LICENSE or http://www.apache.org/licenses/LICENSE-2.0.html
 //
 
-(function(){ 
+(function(){
     //  This sample clip and range will be used if you don't add userData to the entity (see above)
     var DEFAULT_RANGE = 100;
     var DEFAULT_URL = "http://hifi-content.s3.amazonaws.com/ken/samples/forest_ambiX.wav";
     var DEFAULT_VOLUME = 1.0;
 
+    var DEFAULT_USERDATA = {
+        soundURL: DEFAULT_URL,
+        range: DEFAULT_RANGE,
+        maxVolume: DEFAULT_VOLUME,
+        disabled: true,
+        grabbableKey: { wantsTrigger: true },
+    };
+
     var soundURL = "";
+    var soundOptions = {
+        loop: true,
+        localOnly: true,
+    };
     var range = DEFAULT_RANGE;
     var maxVolume = DEFAULT_VOLUME;
+    var disabled = false;
     var UPDATE_INTERVAL_MSECS = 100;
     var rotation;
 
@@ -39,14 +53,13 @@
     var checkTimer = false;
     var _this;
 
-    var WANT_COLOR_CHANGE = false;
     var COLOR_OFF = { red: 128, green: 128, blue: 128 };
     var COLOR_ON = { red: 255, green: 0, blue: 0 };
 
     var WANT_DEBUG = false;
     function debugPrint(string) {
         if (WANT_DEBUG) {
-            print(string);
+            print("ambientSound | " + string);
         }
     }
 
@@ -55,84 +68,201 @@
         var oldSoundURL = soundURL;
         var props = Entities.getEntityProperties(entity, [ "userData" ]);
         if (props.userData) {
-            var data = JSON.parse(props.userData);
+            try {
+                var data = JSON.parse(props.userData);
+            } catch(e) {
+                debugPrint("unable to parse userData JSON string: " + props.userData);
+                this.cleanup();
+                return;
+            }
             if (data.soundURL && !(soundURL === data.soundURL)) {
                 soundURL = data.soundURL;
-                debugPrint("Read ambient sound URL: " + soundURL);    
-            } else if (!data.soundURL) {
-                soundURL = DEFAULT_URL;
+                debugPrint("Read ambient sound URL: " + soundURL);
             }
             if (data.range && !(range === data.range)) {
                 range = data.range;
                 debugPrint("Read ambient sound range: " + range);
             }
-            if (data.volume && !(maxVolume === data.volume)) {
-                maxVolume = data.volume;
+            // Check known aliases for the "volume" setting (which allows for inplace upgrade of existing marketplace entities)
+            data.maxVolume = data.maxVolume || data.soundVolume || data.volume;
+            if (data.maxVolume && !(maxVolume === data.maxVolume)) {
+                maxVolume = data.maxVolume;
                 debugPrint("Read ambient sound volume: " + maxVolume);
             }
+            if ("disabled" in data && !(disabled === data.disabled)) {
+                disabled = data.disabled;
+                debugPrint("Read ambient disabled state: " + disabled);
+                this._updateColor(disabled);
+            }
+        }
+        if (disabled) {
+            this.cleanup();
+            soundURL = "";
+            return;
+        } else if (!checkTimer) {
+            checkTimer = Script.setInterval(_this.maybeUpdate, UPDATE_INTERVAL_MSECS);
         }
         if (!(soundURL === oldSoundURL) || (soundURL === "")) {
-            debugPrint("Loading ambient sound into cache");
-            ambientSound = SoundCache.getSound(soundURL);
+            if (soundURL) {
+                debugPrint("Loading ambient sound into cache");
+                // Use prefetch to detect URL loading errors
+                var resource = SoundCache.prefetch(soundURL);
+                function onStateChanged() {
+                    if (resource.state === Resource.State.FINISHED) {
+                        resource.stateChanged.disconnect(onStateChanged);
+                        ambientSound = SoundCache.getSound(soundURL);
+                    } else if (resource.state === Resource.State.FAILED) {
+                        resource.stateChanged.disconnect(onStateChanged);
+                        debugPrint("Failed to download ambient sound: " + soundURL);
+                    }
+                }
+                resource.stateChanged.connect(onStateChanged);
+                onStateChanged(resource.state);
+            }
             if (soundPlaying && soundPlaying.playing) {
+                debugPrint("URL changed, stopping current ambient sound");
                 soundPlaying.stop();
                 soundPlaying = false;
-                if (WANT_COLOR_CHANGE) {
-                    Entities.editEntity(entity, { color: COLOR_OFF });
-                }
-                debugPrint("Restarting ambient sound");
             }
-        }   
+        }
     }
 
-    this.preload = function(entityID) { 
+    this.clickDownOnEntity = function(entityID, mouseEvent) {
+        if (mouseEvent.isPrimaryButton) {
+            this._toggle("primary click");
+        }
+    };
+
+    this.startFarTrigger = function() {
+        this._toggle("far click");
+    };
+
+    this._toggle = function(hint) {
+        // Toggle between ON/OFF state, but only if not in edit mode
+        if (Settings.getValue("io.highfidelity.isEditting")) {
+            return;
+        }
+        var props = Entities.getEntityProperties(entity, [ "userData" ]);
+        if (!props.userData) {
+            debugPrint("userData is empty; ignoring " + hint);
+            this.cleanup();
+            return;
+        }
+        var data = JSON.parse(props.userData);
+        data.disabled = !data.disabled;
+
+        debugPrint(hint + " -- triggering ambient sound " + (data.disabled ? "OFF" : "ON") + " (" + data.soundURL + ")");
+
+        this.cleanup();
+
+        // Save the userData and notify nearby listeners of the change
+        Entities.editEntity(entity, {
+            userData: JSON.stringify(data)
+        });
+        Messages.sendMessage(entity, "toggled");
+    };
+
+    this._updateColor = function(disabled) {
+        // Update Shape or Text Entity color based on ON/OFF status
+        var props = Entities.getEntityProperties(entity, [ "color", "textColor" ]);
+        var targetColor = disabled ? COLOR_OFF : COLOR_ON;
+        var currentColor = props.textColor || props.color;
+        var newProps = props.textColor ? { textColor: targetColor } : { color: targetColor };
+
+        if (currentColor.red !== targetColor.red ||
+            currentColor.green !== targetColor.green ||
+            currentColor.blue !== targetColor.blue) {
+            Entities.editEntity(entity, newProps);
+        }
+    };
+
+    this.preload = function(entityID) {
         //  Load the sound and range from the entity userData fields, and note the position of the entity.
-        debugPrint("Ambient sound preload");
+        debugPrint("Ambient sound preload " + entityID);
         entity = entityID;
         _this = this;
-        checkTimer = Script.setInterval(this.maybeUpdate, UPDATE_INTERVAL_MSECS);
-    }; 
+
+        var props = Entities.getEntityProperties(entity, [ "userData" ]);
+        var data = {};
+        if (props.userData) {
+            data = JSON.parse(props.userData);
+        }
+        var changed = false;
+        for(var p in DEFAULT_USERDATA) {
+            if (!(p in data)) {
+                data[p] = DEFAULT_USERDATA[p];
+                changed = true;
+            }
+        }
+        if (!data.grabbableKey.wantsTrigger) {
+            data.grabbableKey.wantsTrigger = true;
+            changed = true;
+        }
+        if (changed) {
+            debugPrint("applying default values to userData");
+            Entities.editEntity(entity, { userData: JSON.stringify(data) });
+        }
+        this._updateColor(data.disabled);
+        this.updateSettings();
+
+        // Subscribe to toggle notifications using entity ID as a channel name
+        Messages.subscribe(entity);
+        Messages.messageReceived.connect(this, "_onMessageReceived");
+    };
+
+    this._onMessageReceived = function(channel, message, sender, local) {
+        // Handle incoming toggle notifications
+        if (channel === entity && message === "toggled") {
+            debugPrint("received " + message + " from " + sender);
+            this.updateSettings();
+        }
+    };
 
     this.maybeUpdate = function() {
         // Every UPDATE_INTERVAL_MSECS, update the volume of the ambient sound based on distance from my avatar
         _this.updateSettings();
         var HYSTERESIS_FRACTION = 0.1;
         var props = Entities.getEntityProperties(entity, [ "position", "rotation" ]);
+        if (disabled || !props.position) {
+            _this.cleanup();
+            return;
+        }
         center = props.position;
         rotation = props.rotation;
         var distance = Vec3.length(Vec3.subtract(MyAvatar.position, center));
         if (distance <= range) {
             var volume = (1.0 - distance / range) * maxVolume;
-            if (!soundPlaying && ambientSound.downloaded) {
-                soundPlaying = Audio.playSound(ambientSound,  { loop: true, 
-                                                                localOnly: true, 
-                                                                orientation: rotation,
-                                                                volume: volume });
-                debugPrint("Starting ambient sound, volume: " + volume);
-                if (WANT_COLOR_CHANGE) {
-                    Entities.editEntity(entity, { color: COLOR_ON });
-                }
-                
+            soundOptions.orientation = rotation;
+            soundOptions.volume = volume;
+            if (!soundPlaying && ambientSound && ambientSound.downloaded) {
+                debugPrint("Starting ambient sound: " + soundURL + " (duration: " + ambientSound.duration + ")");
+                soundPlaying = Audio.playSound(ambientSound, soundOptions);
             } else if (soundPlaying && soundPlaying.playing) {
-                soundPlaying.setOptions( { volume: volume, orientation: rotation } );
+                soundPlaying.setOptions(soundOptions);
             }
-
         } else if (soundPlaying && soundPlaying.playing && (distance > range * HYSTERESIS_FRACTION)) {
             soundPlaying.stop();
             soundPlaying = false;
-            Entities.editEntity(entity, { color: { red: 128, green: 128, blue: 128 }});
-            debugPrint("Out of range, stopping ambient sound");
+            debugPrint("Out of range, stopping ambient sound: " + soundURL);
         }
-    }
+    };
 
-    this.unload = function(entityID) { 
+    this.unload = function(entityID) {
         debugPrint("Ambient sound unload");
+        this.cleanup();
+        Messages.unsubscribe(entity);
+        Messages.messageReceived.disconnect(this, "_onMessageReceived");
+    };
+
+    this.cleanup = function() {
         if (checkTimer) {
             Script.clearInterval(checkTimer);
+            checkTimer = false;
         }
         if (soundPlaying && soundPlaying.playing) {
             soundPlaying.stop();
+            soundPlaying = false;
         }
-    }; 
+    };
 
-}) 
+})