Merge branch 'main' into Spawnable/ProductDependency

Code/Framework/AtomCore/AtomCore/Serialization/Json/JsonUtils.cpp

@@ -189,7 +189,7 @@ namespace AZ
                 if (!WasLoadSuccess(result.GetOutcome()))
                 {
                     // This if is a hack around fault in the JSON serialization system
-                    // Jira: https://jira.agscollab.com/browse/LY-106587
+                    // Jira: LY-106587
                     if (message != "No part of the string could be interpreted as a uuid.")
                     {
                         deserializeError.append(message);

Code/Framework/AzCore/AzCore/Asset/AssetCommon.h

@@ -18,6 +18,7 @@
 #include <AzCore/RTTI/RTTI.h>
 #include <AzCore/Memory/SystemAllocator.h>
 #include <AzCore/Math/Uuid.h>
+#include <AzCore/Preprocessor/Enum.h>
 #include <AzCore/std/containers/bitset.h>
 #include <AzCore/std/string/string.h>
 #include <AzCore/std/string/string_view.h>
@@ -216,16 +217,14 @@ namespace AZ
         /**
          * Setting for each reference (Asset<T>) to control loading of referenced assets during serialization.
          */
-        enum class AssetLoadBehavior : u8
-        {
-            PreLoad     = 0,        ///< Serializer will "Pre load" dependencies, asset containers may load in parallel but will not signal AssetReady
-            QueueLoad   = 1,        ///< Serializer will queue an asynchronous load of the referenced asset and return the object to the user. User code should use the \ref AZ::Data::AssetBus to monitor for when it's ready.
-            NoLoad      = 2,        ///< Serializer will load reference information, but asset loading will be left to the user. User code should call Asset<T>::QueueLoad and use the \ref AZ::Data::AssetBus to monitor for when it's ready.
-                                    ///< AssetContainers will skip NoLoad dependencies
-            
+        AZ_ENUM_WITH_UNDERLYING_TYPE(AssetLoadBehavior, u8,
+            (PreLoad, 0),          ///< Serializer will "Pre load" dependencies, asset containers may load in parallel but will not signal AssetReady
+            (QueueLoad, 1),        ///< Serializer will queue an asynchronous load of the referenced asset and return the object to the user. User code should use the \ref AZ::Data::AssetBus to monitor for when it's ready.
+            (NoLoad, 2),           ///< Serializer will load reference information, but asset loading will be left to the user. User code should call Asset<T>::QueueLoad and use the \ref AZ::Data::AssetBus to monitor for when it's ready.
+                                   ///< AssetContainers will skip NoLoad dependencies
             Count,
-            Default = QueueLoad,
-        };
+            (Default, QueueLoad)
+        );
 
         struct AssetFilterInfo
         {
@@ -1222,6 +1221,7 @@ namespace AZ
         } // namespace ProductDependencyInfo
     }  // namespace Data
 
+    AZ_TYPE_INFO_SPECIALIZE(Data::AssetLoadBehavior, "{DAF9ECED-FEF3-4D7A-A220-8CFD6A5E6DA1}");
     AZ_TYPE_INFO_TEMPLATE_WITH_NAME(AZ::Data::Asset, "Asset", "{C891BF19-B60C-45E2-BFD0-027D15DDC939}", AZ_TYPE_INFO_CLASS);
 
 }   // namespace AZ

Code/Framework/AzCore/AzCore/Asset/AssetContainer.cpp

@@ -239,8 +239,13 @@ namespace AZ
                 return;
             }
 
-            CheckReady();
             m_initComplete = true;
+
+            // *After* setting initComplete to true, check to see if the assets are already ready.
+            // This check needs to wait until after setting initComplete because if they *are* ready, we want the final call to
+            // RemoveWaitingAsset to trigger the OnAssetContainerReady/Canceled event.  If we call CheckReady() *before* setting
+            // initComplete, if all the assets are ready, the event will never get triggered.
+            CheckReady();
         }
 
         bool AssetContainer::IsReady() const

Code/Framework/AzCore/AzCore/Asset/AssetJsonSerializer.cpp

@@ -70,6 +70,17 @@ namespace AZ
                 }
             }
 
+            {
+                const AZ::Data::AssetLoadBehavior autoLoadBehavior = instance->GetAutoLoadBehavior();
+                const AZ::Data::AssetLoadBehavior defaultAutoLoadBehavior = defaultInstance ?
+                    defaultInstance->GetAutoLoadBehavior() : AZ::Data::AssetLoadBehavior::Default;
+
+                result.Combine(
+                    ContinueStoringToJsonObjectField(outputValue, "loadBehavior",
+                        &autoLoadBehavior, &defaultAutoLoadBehavior,
+                        azrtti_typeid<Data::AssetLoadBehavior>(), context));
+            }
+
             {
                 ScopedContextPath subPathHint(context, "m_assetHint");
                 const AZStd::string* hint = &instance->GetHint();
@@ -100,14 +111,28 @@ namespace AZ
             AssetId id;
             JSR::ResultCode result(JSR::Tasks::ReadField);
 
+            SerializedAssetTracker* assetTracker =
+                context.GetMetadata().Find<SerializedAssetTracker>();
+
+            {
+                Data::AssetLoadBehavior loadBehavior = instance->GetAutoLoadBehavior();
+
+                result =
+                    ContinueLoadingFromJsonObjectField(&loadBehavior,
+                        azrtti_typeid<Data::AssetLoadBehavior>(),
+                        inputValue, "loadBehavior", context);
+
+                instance->SetAutoLoadBehavior(loadBehavior);
+            }
+
             auto it = inputValue.FindMember("assetId");
             if (it != inputValue.MemberEnd())
             {
                 ScopedContextPath subPath(context, "assetId");
-                result = ContinueLoading(&id, azrtti_typeid<AssetId>(), it->value, context);
+                result.Combine(ContinueLoading(&id, azrtti_typeid<AssetId>(), it->value, context));
                 if (!id.m_guid.IsNull())
                 {
-                    *instance = AssetManager::Instance().FindOrCreateAsset(id, instance->GetType(), AssetLoadBehavior::NoLoad);
+                    *instance = AssetManager::Instance().FindOrCreateAsset(id, instance->GetType(), instance->GetAutoLoadBehavior());
 
 
                     result.Combine(context.Report(result, "Successfully created Asset<T> with id."));
@@ -142,6 +167,11 @@ namespace AZ
                     "The asset hint is missing for Asset<T>, so it will be left empty."));
             }
 
+            if (assetTracker)
+            {
+                assetTracker->AddAsset(*instance);
+            }
+
             bool success = result.GetOutcome() <= JSR::Outcomes::PartialSkip;
             bool defaulted = result.GetOutcome() == JSR::Outcomes::DefaultsUsed || result.GetOutcome() == JSR::Outcomes::PartialDefaults;
             AZStd::string_view message =
@@ -150,5 +180,20 @@ namespace AZ
                 "Not enough information was available to create an instance of Asset<T> or data was corrupted.";
             return context.Report(result, message);
         }
+
+        void SerializedAssetTracker::AddAsset(Asset<AssetData>& asset)
+        {
+            m_serializedAssets.emplace_back(asset);
+        }
+
+        const AZStd::vector<Asset<AssetData>>& SerializedAssetTracker::GetTrackedAssets() const
+        {
+            return m_serializedAssets;
+        }
+
+        AZStd::vector<Asset<AssetData>>& SerializedAssetTracker::GetTrackedAssets()
+        {
+            return m_serializedAssets;
+        }
     } // namespace Data
 } // namespace AZ

Code/Framework/AzCore/AzCore/Asset/AssetJsonSerializer.h

@@ -13,6 +13,7 @@
 #pragma once
 
 #include <AzCore/Memory/Memory.h>
+#include <AzCore/Asset/AssetCommon.h>
 #include <AzCore/Serialization/Json/BaseJsonSerializer.h>
 
 namespace AZ
@@ -37,5 +38,18 @@ namespace AZ
         private:
             JsonSerializationResult::Result LoadAsset(void* outputValue, const rapidjson::Value& inputValue, JsonDeserializerContext& context);
         };
+
+        class SerializedAssetTracker final
+        {
+        public:
+            AZ_RTTI(SerializedAssetTracker, "{1E067091-8C0A-44B1-A455-6E97663F6963}");
+
+            void AddAsset(Asset<AssetData>& asset);
+            AZStd::vector<Asset<AssetData>>& GetTrackedAssets();
+            const AZStd::vector<Asset<AssetData>>& GetTrackedAssets() const;
+
+        private:
+            AZStd::vector<Asset<AssetData>> m_serializedAssets;
+        };
     } // namespace Data
 } // namespace AZ

Code/Framework/AzCore/AzCore/Asset/AssetManager.cpp

@@ -1454,32 +1454,48 @@ namespace AZ
         //=========================================================================
         void AssetManager::ReloadAssetFromData(const Asset<AssetData>& asset)
         {
-            AZ_Assert(asset.Get(), "Asset data for reload is missing.");
-            AZStd::scoped_lock<AZStd::recursive_mutex> assetLock(m_assetMutex);
-            AZ_Assert(m_assets.find(asset.GetId()) != m_assets.end(), "Unable to reload asset %s because its not in the AssetManager's asset list.", asset.ToString<AZStd::string>().c_str());
-            AZ_Assert(m_assets.find(asset.GetId()) == m_assets.end() || asset->RTTI_GetType() == m_assets.find(asset.GetId())->second->RTTI_GetType(),
-                "New and old data types are mismatched!");
+            bool shouldAssignAssetData = false;
 
-            auto found = m_assets.find(asset.GetId());
-            if ((found == m_assets.end()) || (asset->RTTI_GetType() != found->second->RTTI_GetType()))
             {
-                return; // this will just lead to crashes down the line and the above asserts cover this.
-            }
+                AZ_Assert(asset.Get(), "Asset data for reload is missing.");
+                AZStd::scoped_lock<AZStd::recursive_mutex> assetLock(m_assetMutex);
+                AZ_Assert(
+                    m_assets.find(asset.GetId()) != m_assets.end(),
+                    "Unable to reload asset %s because it's not in the AssetManager's asset list.", asset.ToString<AZStd::string>().c_str());
+                AZ_Assert(
+                    m_assets.find(asset.GetId()) == m_assets.end() ||
+                        asset->RTTI_GetType() == m_assets.find(asset.GetId())->second->RTTI_GetType(),
+                    "New and old data types are mismatched!");
 
-            AssetData* newData = asset.Get();
-
-            if (found->second != newData)
-            {
-                // Notify users that we are about to change asset
-                AssetBus::Event(asset.GetId(), &AssetBus::Events::OnAssetPreReload, asset);
-
-                // Resolve the asset handler and account for the new asset instance.
+                auto found = m_assets.find(asset.GetId());
+                if ((found == m_assets.end()) || (asset->RTTI_GetType() != found->second->RTTI_GetType()))
                 {
-                    AssetHandlerMap::iterator handlerIt = m_handlers.find(newData->GetType());
-                    AZ_Assert(handlerIt != m_handlers.end(), "No handler was registered for this asset [type:%s id:%s]!",
-                        newData->GetType().ToString<AZ::OSString>().c_str(), newData->GetId().ToString<AZ::OSString>().c_str());
+                    return; // this will just lead to crashes down the line and the above asserts cover this.
                 }
 
+                AssetData* newData = asset.Get();
+
+                if (found->second != newData)
+                {
+                    // Notify users that we are about to change asset
+                    AssetBus::Event(asset.GetId(), &AssetBus::Events::OnAssetPreReload, asset);
+
+                    // Resolve the asset handler and account for the new asset instance.
+                    {
+                        AssetHandlerMap::iterator handlerIt = m_handlers.find(newData->GetType());
+                        AZ_Assert(
+                            handlerIt != m_handlers.end(), "No handler was registered for this asset [type:%s id:%s]!",
+                            newData->GetType().ToString<AZ::OSString>().c_str(), newData->GetId().ToString<AZ::OSString>().c_str());
+                    }
+
+                    shouldAssignAssetData = true;
+                }
+            }
+
+            // We specifically perform this outside of the m_assetMutex lock so that the lock isn't held at the point that
+            // OnAssetReload is triggered inside of AssignAssetData.  Otherwise, we open up a high potential for deadlocks.
+            if (shouldAssignAssetData)
+            {
                 AssignAssetData(asset);
             }
         }

Code/Framework/AzCore/AzCore/Asset/AssetManagerComponent.cpp

@@ -13,7 +13,7 @@
 #include <AzCore/Asset/AssetJsonSerializer.h>
 #include <AzCore/Asset/AssetManagerComponent.h>
 #include <AzCore/Asset/AssetManagerBus.h>
-#include <AzCore/Serialization/SerializeContext.h>
+#include <AzCore/Preprocessor/EnumReflectUtils.h>
 #include <AzCore/Serialization/EditContext.h>
 #include <AzCore/RTTI/BehaviorContext.h>
 #include <AzCore/Asset/AssetManager.h>
@@ -24,6 +24,11 @@
 
 namespace AZ
 {
+    namespace Data
+    {
+        AZ_ENUM_DEFINE_REFLECT_UTILITIES(AssetLoadBehavior);
+    }
+
     //=========================================================================
     // AssetDatabaseComponent
     // [6/25/2012]
@@ -99,6 +104,8 @@ namespace AZ
 
         if (SerializeContext* serializeContext = azrtti_cast<SerializeContext*>(context))
         {
+            AZ::Data::AssetLoadBehaviorReflect(*serializeContext);
+
             serializeContext->RegisterGenericType<Data::Asset<Data::AssetData>>();
 
             serializeContext->Class<AssetManagerComponent, AZ::Component>()

Code/Framework/AzCore/AzCore/Component/Component.cpp

@@ -14,6 +14,7 @@
 #include <AzCore/Component/Entity.h>
 #include <AzCore/Component/ComponentApplicationBus.h>
 #include <AzCore/Serialization/SerializeContext.h>
+#include <AzCore/Interface/Interface.h>
 #include <AzCore/Math/Sfmt.h>
 #include <AzCore/Math/Crc.h>
 
@@ -173,7 +174,11 @@ namespace AZ
     //=========================================================================
     void ComponentDescriptor::ReleaseDescriptor()
     {
-        EBUS_EVENT(ComponentApplicationBus, UnregisterComponentDescriptor, this);
+        AZ::ComponentApplicationRequests* componentApplication = AZ::Interface<AZ::ComponentApplicationRequests>::Get();
+        if (componentApplication != nullptr)
+        {
+            componentApplication->UnregisterComponentDescriptor(this);
+        }
         delete this;
     }
 } // namespace AZ

Code/Framework/AzCore/AzCore/Component/ComponentApplication.cpp

@@ -526,6 +526,11 @@ namespace AZ
         // are destroyed
         m_commandLine = {};
 
+        m_entityAddedEvent.DisconnectAllHandlers();
+        m_entityRemovedEvent.DisconnectAllHandlers();
+        m_entityActivatedEvent.DisconnectAllHandlers();
+        m_entityDeactivatedEvent.DisconnectAllHandlers();
+
         DestroyAllocator();
     }
 
@@ -980,6 +985,26 @@ namespace AZ
         handler.Connect(m_entityRemovedEvent);
     }
 
+    void ComponentApplication::RegisterEntityActivatedEventHandler(EntityActivatedEvent::Handler& handler)
+    {
+        handler.Connect(m_entityActivatedEvent);
+    }
+
+    void ComponentApplication::RegisterEntityDeactivatedEventHandler(EntityDeactivatedEvent::Handler& handler)
+    {
+        handler.Connect(m_entityDeactivatedEvent);
+    }
+
+    void ComponentApplication::SignalEntityActivated(AZ::Entity* entity)
+    {
+        m_entityActivatedEvent.Signal(entity);
+    }
+
+    void ComponentApplication::SignalEntityDeactivated(AZ::Entity* entity)
+    {
+        m_entityDeactivatedEvent.Signal(entity);
+    }
+
     //=========================================================================
     // AddEntity
     // [5/30/2012]

Code/Framework/AzCore/AzCore/Component/ComponentApplication.h

@@ -204,6 +204,10 @@ namespace AZ
         void UnregisterComponentDescriptor(const ComponentDescriptor* descriptor) override final;
         void RegisterEntityAddedEventHandler(EntityAddedEvent::Handler& handler) override final;
         void RegisterEntityRemovedEventHandler(EntityRemovedEvent::Handler& handler) override final;
+        void RegisterEntityActivatedEventHandler(EntityActivatedEvent::Handler& handler) override final;
+        void RegisterEntityDeactivatedEventHandler(EntityDeactivatedEvent::Handler& handler) override final;
+        void SignalEntityActivated(Entity* entity) override final;
+        void SignalEntityDeactivated(Entity* entity) override final;
         bool AddEntity(Entity* entity) override;
         bool RemoveEntity(Entity* entity) override;
         bool DeleteEntity(const EntityId& id) override;
@@ -382,6 +386,8 @@ namespace AZ
         AZStd::unique_ptr<SettingsRegistryInterface> m_settingsRegistry;
         EntityAddedEvent                            m_entityAddedEvent;
         EntityRemovedEvent                          m_entityRemovedEvent;
+        EntityAddedEvent                            m_entityActivatedEvent;
+        EntityRemovedEvent                          m_entityDeactivatedEvent;
         AZ::IConsole*                               m_console{};
         Descriptor                                  m_descriptor;
         bool                                        m_isStarted{ false };

Code/Framework/AzCore/AzCore/Component/ComponentApplicationBus.h

@@ -72,6 +72,8 @@ namespace AZ
 
     using EntityAddedEvent = AZ::Event<AZ::Entity*>;
     using EntityRemovedEvent = AZ::Event<AZ::Entity*>;
+    using EntityActivatedEvent = AZ::Event<AZ::Entity*>;
+    using EntityDeactivatedEvent = AZ::Event<AZ::Entity*>;
 
     //! Interface that components can use to make requests of the main application.
     class ComponentApplicationRequests
@@ -102,6 +104,22 @@ namespace AZ
         //! @param handler the event handler to signal.
         virtual void RegisterEntityRemovedEventHandler(EntityRemovedEvent::Handler& handler) = 0;
 
+        //! Registers an event handler that will be signalled whenever an entity is added.
+        //! @param handler the event handler to signal.
+        virtual void RegisterEntityActivatedEventHandler(EntityActivatedEvent::Handler& handler) = 0;
+
+        //! Registers an event handler that will be signalled whenever an entity is removed.
+        //! @param handler the event handler to signal.
+        virtual void RegisterEntityDeactivatedEventHandler(EntityDeactivatedEvent::Handler& handler) = 0;
+
+        //! Signals that the provided entity has been activated.
+        //! @param entity the entity being activated.
+        virtual void SignalEntityActivated(AZ::Entity* entity) = 0;
+
+        //! Signals that the provided entity has been deactivated.
+        //! @param entity the entity being deactivated.
+        virtual void SignalEntityDeactivated(AZ::Entity* entity) = 0;
+
         //! Adds an entity to the application's registry.
         //! Calling Init() on an entity automatically performs this operation.
         //! @param entity A pointer to the entity to add to the application's registry.

Code/Framework/AzCore/AzCore/Component/Entity.cpp

@@ -112,7 +112,11 @@ namespace AZ
         {
             EBUS_EVENT(EntitySystemBus, OnEntityDestruction, m_id);
             EBUS_EVENT_ID(m_id, EntityBus, OnEntityDestruction, m_id);
-            EBUS_EVENT(ComponentApplicationBus, RemoveEntity, this);
+            AZ::ComponentApplicationRequests* componentApplication = AZ::Interface<AZ::ComponentApplicationRequests>::Get();
+            if (componentApplication != nullptr)
+            {
+                componentApplication->RemoveEntity(this);
+            }
             m_stateEvent.Signal(State::Init, State::Destroying);
         }
 
@@ -216,12 +220,22 @@ namespace AZ
 
         EBUS_EVENT_ID(m_id, EntityBus, OnEntityActivated, m_id);
         EBUS_EVENT(EntitySystemBus, OnEntityActivated, m_id);
+        AZ::ComponentApplicationRequests* componentApplication = AZ::Interface<AZ::ComponentApplicationRequests>::Get();
+        if (componentApplication != nullptr)
+        {
+            componentApplication->SignalEntityActivated(this);
+        }
     }
 
     void Entity::Deactivate()
     {
         AZ_PROFILE_FUNCTION(AZ::Debug::ProfileCategory::AzCore);
 
+        AZ::ComponentApplicationRequests* componentApplication = AZ::Interface<AZ::ComponentApplicationRequests>::Get();
+        if (componentApplication != nullptr)
+        {
+            componentApplication->SignalEntityDeactivated(this);
+        }
         EBUS_EVENT_ID(m_id, EntityBus, OnEntityDeactivated, m_id);
         EBUS_EVENT(EntitySystemBus, OnEntityDeactivated, m_id);
 

Code/Framework/AzCore/AzCore/Console/LoggerSystemComponent.cpp

@@ -126,9 +126,11 @@ namespace AZ
         char buffer[MaxLogBufferSize];
 
         const AZStd::size_t length = azvsnprintf(buffer, MaxLogBufferSize, format, args);
-        buffer[AZStd::min<AZStd::size_t>(length, MaxLogBufferSize - 2)] = '\n';
         buffer[AZStd::min<AZStd::size_t>(length + 1, MaxLogBufferSize - 1)] = '\0';
+        m_logEvent.Signal(level, buffer, file, function, line);
 
+        // Force a new-line before calling the AZ::Debug::Trace functions, as they assume a newline is present
+        buffer[AZStd::min<AZStd::size_t>(length + 1, MaxLogBufferSize - 2)] = '\n';
         switch (level)
         {
         case LogLevel::Warn:
@@ -142,8 +144,6 @@ namespace AZ
             AZ::Debug::Trace::Output("Logger", buffer);
             break;
         }
-
-        m_logEvent.Signal(level, buffer, file, function, line);
     }
 
     void LoggerSystemComponent::SetLevel(const AZ::ConsoleCommandContainer& arguments)

Code/Framework/AzCore/AzCore/EBus/Event.inl

@@ -233,6 +233,14 @@ namespace AZ
             AZ_Assert(handler->m_event == this, "Entry event does not match");
             handler->Disconnect();
         }
+
+        // Free up any owned memory
+        AZStd::vector<Handler*> freeHandlers;
+        m_handlers.swap(freeHandlers);
+        AZStd::vector<Handler*> freeAdds;
+        m_addList.swap(freeAdds);
+        AZStd::stack<size_t> freeFree;
+        m_freeList.swap(freeFree);
     }
 
 

Code/Framework/AzCore/AzCore/Math/MathMatrixSerializer.cpp

@@ -0,0 +1,485 @@
+/*
+* All or portions of this file Copyright (c) Amazon.com, Inc. or its affiliates or
+* its licensors.
+*
+* For complete copyright and license terms please see the LICENSE at the root of this
+* distribution (the "License"). All use of this software is governed by the License,
+* or, if provided, by the license below or the license accompanying this file. Do not
+* remove or modify any license notices. This file is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+*
+*/
+
+#include <AzCore/Math/MathMatrixSerializer.h>
+#include <AzCore/Math/Matrix3x3.h>
+#include <AzCore/Math/Matrix3x4.h>
+#include <AzCore/Math/Matrix4x4.h>
+#include <AzCore/Serialization/Json/JsonSerialization.h>
+#include <AzCore/Serialization/Json/RegistrationContext.h>
+#include <AzCore/Serialization/Json/StackedString.h>
+#include <AzCore/std/algorithm.h>
+#include <AzCore/std/string/osstring.h>
+#include <AzCore/Casting/numeric_cast.h>
+
+namespace AZ::JsonMathMatrixSerializerInternal
+{
+    template<typename MatrixType, size_t RowCount, size_t ColumnCount>
+    JsonSerializationResult::Result LoadArray(MatrixType& output, const rapidjson::Value& inputValue, JsonDeserializerContext& context)
+    {
+        namespace JSR = JsonSerializationResult; // Used remove name conflicts in AzCore in uber builds.
+
+        constexpr size_t ElementCount = RowCount * ColumnCount;
+        static_assert(ElementCount == 9 || ElementCount == 12 || ElementCount == 16,
+            "MathMatrixSerializer only support Matrix3x3, Matrix3x4 and Matrix4x4.");
+
+        rapidjson::SizeType arraySize = inputValue.Size();
+        if (arraySize < ElementCount)
+        {
+            return context.Report(JSR::Tasks::ReadField, JSR::Outcomes::Unsupported,
+                "Not enough numbers in JSON array to load math matrix from.");
+        }
+
+        AZ::BaseJsonSerializer* floatSerializer = context.GetRegistrationContext()->GetSerializerForType(azrtti_typeid<float>());
+        if (!floatSerializer)
+        {
+            return context.Report(JSR::Tasks::ReadField, JSR::Outcomes::Catastrophic, "Failed to find the JSON float serializer.");
+        }
+
+        constexpr const char* names[] = {"0", "1", "2", "3", "4", "5", "6", "7", "8", "9", "10", "11", "12", "13", "14", "15"};
+        float values[ElementCount];
+        for (int i = 0; i < ElementCount; ++i)
+        {
+            ScopedContextPath subPath(context, names[i]);
+            JSR::Result intermediate = floatSerializer->Load(values + i, azrtti_typeid<float>(), inputValue[i], context);
+            if (intermediate.GetResultCode().GetProcessing() != JSR::Processing::Completed)
+            {
+                return intermediate;
+            }
+        }
+
+        size_t valueIndex = 0;
+        for (size_t r = 0; r < RowCount; ++r)
+        {
+            for (size_t c = 0; c < ColumnCount; ++c)
+            {
+                output.SetElement(aznumeric_caster(r), aznumeric_caster(c), values[valueIndex++]);
+            }
+        }
+
+        return context.Report(JSR::Tasks::ReadField, JSR::Outcomes::Success, "Successfully read math matrix.");
+    }
+
+    JsonSerializationResult::Result LoadFloatFromObject(
+        float& output,
+        const rapidjson::Value& inputValue,
+        JsonDeserializerContext& context,
+        const char* name,
+        const char* altName)
+    {
+        namespace JSR = JsonSerializationResult; // Used remove name conflicts in AzCore in uber builds.
+
+        AZ::BaseJsonSerializer* floatSerializer = context.GetRegistrationContext()->GetSerializerForType(azrtti_typeid<float>());
+        if (!floatSerializer)
+        {
+            return context.Report(JSR::Tasks::ReadField, JSR::Outcomes::Catastrophic, "Failed to find the json float serializer.");
+        }
+
+        const char* nameUsed = name;
+        JSR::ResultCode result(JSR::Tasks::ReadField);
+        auto iterator = inputValue.FindMember(rapidjson::StringRef(name));
+        if (iterator == inputValue.MemberEnd())
+        {
+            nameUsed = altName;
+            iterator = inputValue.FindMember(rapidjson::StringRef(altName));
+            if (iterator == inputValue.MemberEnd())
+            {
+                // field not found so leave default value
+                result.Combine(JSR::ResultCode(JSR::Tasks::ReadField, JSR::Outcomes::DefaultsUsed));
+                nameUsed = nullptr;
+            }
+        }
+
+        if (nameUsed)
+        {
+            ScopedContextPath subPath(context, nameUsed);
+            JSR::Result intermediate = floatSerializer->Load(&output, azrtti_typeid<float>(), iterator->value, context);
+            if (intermediate.GetResultCode().GetProcessing() != JSR::Processing::Completed)
+            {
+                return intermediate;
+            }
+            else
+            {
+                result.Combine(JSR::ResultCode(JSR::Tasks::ReadField, JSR::Outcomes::Success));
+            }
+        }
+
+        return context.Report(result, "Successfully read float.");
+    }
+
+    JsonSerializationResult::Result LoadVector3FromObject(
+        Vector3& output,
+        const rapidjson::Value& inputValue,
+        JsonDeserializerContext& context,
+        AZStd::fixed_vector<AZStd::string_view, 6> names)
+    {
+        namespace JSR = JsonSerializationResult; // Used remove name conflicts in AzCore in uber builds.
+        constexpr size_t ElementCount = 3; // Vector3
+
+        JSR::ResultCode result(JSR::Tasks::ReadField);
+        float values[ElementCount];
+        for (int i = 0; i < ElementCount; ++i)
+        {
+            values[i] = output.GetElement(i);
+            auto name = names[i * 2];
+            auto altName = names[(i * 2) + 1];
+
+            JSR::Result intermediate = LoadFloatFromObject(values[i], inputValue, context, name.data(), altName.data());
+            if (intermediate.GetResultCode().GetProcessing() != JSR::Processing::Completed)
+            {
+                return intermediate;
+            }
+            else
+            {
+                result.Combine(JSR::ResultCode(JSR::Tasks::ReadField, JSR::Outcomes::Success));
+            }
+        }
+
+        for (int i = 0; i < ElementCount; ++i)
+        {
+            output.SetElement(i, values[i]);
+        }
+
+        return context.Report(result, "Successfully read math matrix.");
+    }
+
+    JsonSerializationResult::Result LoadQuaternionAndScale(
+        AZ::Quaternion& quaternion,
+        float& scale,
+        const rapidjson::Value& inputValue,
+        JsonDeserializerContext& context)
+    {
+        namespace JSR = JsonSerializationResult; // Used remove name conflicts in AzCore in uber builds.
+
+        JSR::ResultCode result(JSR::Tasks::ReadField);
+        scale = 1.0f;
+        JSR::Result intermediateScale = LoadFloatFromObject(scale, inputValue, context, "scale", "Scale");
+        if (intermediateScale.GetResultCode().GetProcessing() != JSR::Processing::Completed)
+        {
+            return intermediateScale;
+        }
+        result.Combine(intermediateScale);
+
+        if (AZ::IsClose(scale, 0.0f))
+        {
+            result.Combine({ JSR::Tasks::ReadField, JSR::Outcomes::Unsupported });
+            return context.Report(result, "Scale can not be zero.");
+        }
+
+        AZ::Vector3 degreesRollPitchYaw = AZ::Vector3::CreateZero();
+        JSR::Result intermediateDegrees = LoadVector3FromObject(degreesRollPitchYaw, inputValue, context, { "roll", "Roll", "pitch", "Pitch", "yaw", "Yaw" });
+        if (intermediateDegrees.GetResultCode().GetProcessing() != JSR::Processing::Completed)
+        {
+            return intermediateDegrees;
+        }
+        result.Combine(intermediateDegrees);
+
+        // the quaternion should be equivalent to a series of rotations in the order z, then y, then x
+        const AZ::Vector3 eulerRadians = AZ::Vector3DegToRad(degreesRollPitchYaw);
+        quaternion = AZ::Quaternion::CreateRotationX(eulerRadians.GetX()) *
+                     AZ::Quaternion::CreateRotationY(eulerRadians.GetY()) *
+                     AZ::Quaternion::CreateRotationZ(eulerRadians.GetZ());
+
+        return context.Report(result, "Successfully read math yaw, pitch, roll, and scale.");
+    }
+
+    template<typename MatrixType>
+    JsonSerializationResult::Result LoadObject(MatrixType& output, const rapidjson::Value& inputValue, JsonDeserializerContext& context)
+    {
+        namespace JSR = JsonSerializationResult; // Used remove name conflicts in AzCore in uber builds.
+        output = MatrixType::CreateIdentity();
+
+        JSR::ResultCode result(JSR::Tasks::ReadField);
+        float scale;
+        AZ::Quaternion rotation;
+
+        JSR::Result intermediate = LoadQuaternionAndScale(rotation, scale, inputValue, context);
+        if (intermediate.GetResultCode().GetProcessing() != JSR::Processing::Completed)
+        {
+            return intermediate;
+        }
+        result.Combine(intermediate);
+
+        AZ::Vector3 translation = AZ::Vector3::CreateZero();
+        JSR::Result intermediateTranslation = LoadVector3FromObject(translation, inputValue, context, { "x", "X", "y", "Y", "z", "Z" });
+        if (intermediateTranslation.GetResultCode().GetProcessing() != JSR::Processing::Completed)
+        {
+            return intermediateTranslation;
+        }
+        result.Combine(intermediateTranslation);
+
+        // composed a matrix by rotation, then scale, then translation
+        auto matrix = MatrixType::CreateFromQuaternion(rotation);
+        matrix.MultiplyByScale(Vector3{ scale });
+        matrix.SetTranslation(translation);
+
+        if (matrix == MatrixType::CreateIdentity())
+        {
+            return context.Report(JSR::Tasks::ReadField, JSR::Outcomes::DefaultsUsed, "Using identity matrix for empty object.");
+        }
+
+        output = matrix;
+        return context.Report(result, "Successfully read math matrix.");
+    }
+
+    template<>
+    JsonSerializationResult::Result LoadObject<Matrix3x3>(Matrix3x3& output, const rapidjson::Value& inputValue, JsonDeserializerContext& context)
+    {
+        namespace JSR = JsonSerializationResult; // Used remove name conflicts in AzCore in uber builds.
+        output = Matrix3x3::CreateIdentity();
+
+        JSR::ResultCode result(JSR::Tasks::ReadField);
+        float scale;
+        AZ::Quaternion rotation;
+
+        JSR::Result intermediate = LoadQuaternionAndScale(rotation, scale, inputValue, context);
+        if (intermediate.GetResultCode().GetProcessing() != JSR::Processing::Completed)
+        {
+            return intermediate;
+        }
+        result.Combine(intermediate);
+
+        // composed a matrix by rotation then scale
+        auto matrix = Matrix3x3::CreateFromQuaternion(rotation);
+        matrix.MultiplyByScale(Vector3{ scale });
+
+        if (matrix == Matrix3x3::CreateIdentity())
+        {
+            return context.Report(JSR::Tasks::ReadField, JSR::Outcomes::DefaultsUsed, "Using identity matrix for empty object.");
+        }
+
+        output = matrix;
+        return context.Report(result, "Successfully read math matrix.");
+    }
+
+    template<typename MatrixType, size_t RowCount, size_t ColumnCount>
+    JsonSerializationResult::Result Load(void* outputValue, const Uuid& outputValueTypeId,
+        const rapidjson::Value& inputValue, JsonDeserializerContext& context)
+    {
+        namespace JSR = JsonSerializationResult; // Used remove name conflicts in AzCore in uber builds.
+
+        constexpr size_t ElementCount = RowCount * ColumnCount;
+        static_assert(ElementCount == 9 || ElementCount == 12 || ElementCount == 16,
+            "MathMatrixSerializer only support Matrix3x3, Matrix3x4 and Matrix4x4.");
+
+        AZ_Assert(azrtti_typeid<MatrixType>() == outputValueTypeId,
+            "Unable to deserialize Matrix%zux%zu to json because the provided type is %s",
+            RowCount, ColumnCount, outputValueTypeId.ToString<OSString>().c_str());
+        AZ_UNUSED(outputValueTypeId);
+
+        MatrixType* matrix = reinterpret_cast<MatrixType*>(outputValue);
+        AZ_Assert(matrix, "Output value for JsonMatrix%zux%zuSerializer can't be null.", RowCount, ColumnCount);
+
+        switch (inputValue.GetType())
+        {
+        case rapidjson::kArrayType:
+            return LoadArray<MatrixType, RowCount, ColumnCount>(*matrix, inputValue, context);
+        case rapidjson::kObjectType:
+            return LoadObject<MatrixType>(*matrix, inputValue, context);
+
+        case rapidjson::kStringType:
+            [[fallthrough]];
+        case rapidjson::kNumberType:
+            [[fallthrough]];
+        case rapidjson::kNullType:
+            [[fallthrough]];
+        case rapidjson::kFalseType:
+            [[fallthrough]];
+        case rapidjson::kTrueType:
+            return context.Report(JSR::Tasks::ReadField, JSR::Outcomes::Unsupported,
+                "Unsupported type. Math matrix can only be read from arrays or objects.");
+
+        default:
+            return context.Report(JSR::Tasks::ReadField, JSR::Outcomes::Unknown,
+                "Unknown json type encountered in math matrix.");
+        }
+    }
+
+    template<typename MatrixType>
+    AZ::Quaternion CreateQuaternion(const MatrixType& matrix);
+
+    template<>
+    AZ::Quaternion CreateQuaternion<AZ::Matrix3x3>(const AZ::Matrix3x3& matrix)
+    {
+        return Quaternion::CreateFromMatrix3x3(matrix);
+    }
+
+    template<>
+    AZ::Quaternion CreateQuaternion<AZ::Matrix3x4>(const AZ::Matrix3x4& matrix)
+    {
+        return Quaternion::CreateFromMatrix3x4(matrix);
+    }
+
+    template<>
+    AZ::Quaternion CreateQuaternion<AZ::Matrix4x4>(const AZ::Matrix4x4& matrix)
+    {
+        return Quaternion::CreateFromMatrix4x4(matrix);
+    }
+
+    template<typename MatrixType>
+    JsonSerializationResult::Result StoreRotationAndScale(rapidjson::Value& outputValue, const void* inputValue, const void* defaultValue,
+        const Uuid& valueTypeId, JsonSerializerContext& context)
+    {
+        namespace JSR = JsonSerializationResult; // Used remove name conflicts in AzCore in uber builds.
+        AZ_UNUSED(valueTypeId);
+
+        const MatrixType* matrix = reinterpret_cast<const MatrixType*>(inputValue);
+        AZ_Assert(matrix, "Input value for JsonMatrixSerializer can't be null.");
+        const MatrixType* defaultMatrix = reinterpret_cast<const MatrixType*>(defaultValue);
+
+        if (!context.ShouldKeepDefaults() && defaultMatrix && *matrix == *defaultMatrix)
+        {
+            return context.Report(JSR::Tasks::WriteValue, JSR::Outcomes::DefaultsUsed, "Default math Matrix used.");
+        }
+
+        MatrixType matrixToExport = *matrix;
+        AZ::Vector3 scale = matrixToExport.ExtractScale();
+
+        AZ::Quaternion rotation = CreateQuaternion(matrixToExport);
+        auto degrees = rotation.GetEulerDegrees();
+        outputValue.AddMember(rapidjson::StringRef("roll"), degrees.GetX(), context.GetJsonAllocator());
+        outputValue.AddMember(rapidjson::StringRef("pitch"), degrees.GetY(), context.GetJsonAllocator());
+        outputValue.AddMember(rapidjson::StringRef("yaw"), degrees.GetZ(), context.GetJsonAllocator());
+        outputValue.AddMember(rapidjson::StringRef("scale"), scale.GetX(), context.GetJsonAllocator());
+
+        return context.Report(JSR::Tasks::WriteValue, JSR::Outcomes::Success, "Math Matrix successfully stored.");
+    }
+
+    template<typename MatrixType>
+    JsonSerializationResult::Result StoreTranslation(rapidjson::Value& outputValue, const void* inputValue,
+        const void* defaultValue, const Uuid& valueTypeId, JsonSerializerContext& context)
+    {
+        namespace JSR = JsonSerializationResult; // Used remove name conflicts in AzCore in uber builds.
+        AZ_UNUSED(valueTypeId);
+
+        const MatrixType* matrix = reinterpret_cast<const MatrixType*>(inputValue);
+        AZ_Assert(matrix, "Input value for JsonMatrixSerializer can't be null.");
+        const MatrixType* defaultMatrix = reinterpret_cast<const MatrixType*>(defaultValue);
+
+        if (!context.ShouldKeepDefaults() && defaultMatrix && *matrix == *defaultMatrix)
+        {
+            return context.Report(JSR::Tasks::WriteValue, JSR::Outcomes::DefaultsUsed, "Default math Matrix used.");
+        }
+
+        auto translation = matrix->GetTranslation();
+        outputValue.AddMember(rapidjson::StringRef("x"), translation.GetX(), context.GetJsonAllocator());
+        outputValue.AddMember(rapidjson::StringRef("y"), translation.GetY(), context.GetJsonAllocator());
+        outputValue.AddMember(rapidjson::StringRef("z"), translation.GetZ(), context.GetJsonAllocator());
+
+        return context.Report(JSR::Tasks::WriteValue, JSR::Outcomes::Success, "Math Matrix successfully stored.");
+    }
+}
+
+namespace AZ
+{
+    // Matrix3x3
+
+    AZ_CLASS_ALLOCATOR_IMPL(JsonMatrix3x3Serializer, SystemAllocator, 0);
+
+    JsonSerializationResult::Result JsonMatrix3x3Serializer::Load(void* outputValue, const Uuid& outputValueTypeId,
+        const rapidjson::Value& inputValue, JsonDeserializerContext& context)
+    {
+        return JsonMathMatrixSerializerInternal::Load<Matrix3x3, 3, 3>(
+            outputValue,
+            outputValueTypeId,
+            inputValue,
+            context);
+    }
+
+    JsonSerializationResult::Result JsonMatrix3x3Serializer::Store(rapidjson::Value& outputValue, const void* inputValue,
+        const void* defaultValue, const Uuid& valueTypeId, JsonSerializerContext& context)
+    {
+        outputValue.SetObject();
+
+        return JsonMathMatrixSerializerInternal::StoreRotationAndScale<Matrix3x3>(
+            outputValue,
+            inputValue,
+            defaultValue,
+            valueTypeId,
+            context);
+    }
+
+
+    // Matrix3x4
+
+    AZ_CLASS_ALLOCATOR_IMPL(JsonMatrix3x4Serializer, SystemAllocator, 0);
+
+    JsonSerializationResult::Result JsonMatrix3x4Serializer::Load(void* outputValue, const Uuid& outputValueTypeId,
+        const rapidjson::Value& inputValue, JsonDeserializerContext& context)
+    {
+        return JsonMathMatrixSerializerInternal::Load<Matrix3x4, 3, 4>(
+            outputValue,
+            outputValueTypeId,
+            inputValue,
+            context);
+    }
+
+    JsonSerializationResult::Result JsonMatrix3x4Serializer::Store(rapidjson::Value& outputValue, const void* inputValue,
+        const void* defaultValue, const Uuid& valueTypeId, JsonSerializerContext& context)
+    {
+        outputValue.SetObject();
+
+        auto result = JsonMathMatrixSerializerInternal::StoreRotationAndScale<Matrix3x4>(
+            outputValue,
+            inputValue,
+            defaultValue,
+            valueTypeId,
+            context);
+
+        auto resultTranslation = JsonMathMatrixSerializerInternal::StoreTranslation<Matrix3x4>(
+            outputValue,
+            inputValue,
+            defaultValue,
+            valueTypeId,
+            context);
+
+        result.GetResultCode().Combine(resultTranslation);
+        return result;
+    }
+
+    // Matrix4x4
+
+    AZ_CLASS_ALLOCATOR_IMPL(JsonMatrix4x4Serializer, SystemAllocator, 0);
+
+    JsonSerializationResult::Result JsonMatrix4x4Serializer::Load(void* outputValue, const Uuid& outputValueTypeId,
+        const rapidjson::Value& inputValue, JsonDeserializerContext& context)
+    {
+        return JsonMathMatrixSerializerInternal::Load<Matrix4x4, 4, 4>(
+            outputValue,
+            outputValueTypeId,
+            inputValue,
+            context);
+    }
+
+    JsonSerializationResult::Result JsonMatrix4x4Serializer::Store(rapidjson::Value& outputValue, const void* inputValue,
+        const void* defaultValue, const Uuid& valueTypeId, JsonSerializerContext& context)
+    {
+        outputValue.SetObject();
+
+        auto result = JsonMathMatrixSerializerInternal::StoreRotationAndScale<Matrix4x4>(
+            outputValue,
+            inputValue,
+            defaultValue,
+            valueTypeId,
+            context);
+
+        auto resultTranslation = JsonMathMatrixSerializerInternal::StoreTranslation<Matrix4x4>(
+            outputValue,
+            inputValue,
+            defaultValue,
+            valueTypeId,
+            context);
+
+        result.GetResultCode().Combine(resultTranslation);
+        return result;
+    }
+}

Code/Framework/AzCore/AzCore/Math/MathMatrixSerializer.h

@@ -0,0 +1,54 @@
+/*
+* All or portions of this file Copyright (c) Amazon.com, Inc. or its affiliates or
+* its licensors.
+*
+* For complete copyright and license terms please see the LICENSE at the root of this
+* distribution (the "License"). All use of this software is governed by the License,
+* or, if provided, by the license below or the license accompanying this file. Do not
+* remove or modify any license notices. This file is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+*
+*/
+
+#pragma once
+
+#include <AzCore/Serialization/Json/BaseJsonSerializer.h>
+
+namespace AZ
+{
+    class JsonMatrix3x3Serializer
+        : public BaseJsonSerializer
+    {
+    public:
+        AZ_RTTI(JsonMatrix3x3Serializer, "{8C76CD6A-8576-4604-A746-CF7A7F20F366}", BaseJsonSerializer);
+        AZ_CLASS_ALLOCATOR_DECL;
+        JsonSerializationResult::Result Load(void* outputValue, const Uuid& outputValueTypeId, const rapidjson::Value& inputValue,
+            JsonDeserializerContext& context) override;
+        JsonSerializationResult::Result Store(rapidjson::Value& outputValue, const void* inputValue, const void* defaultValue,
+            const Uuid& valueTypeId, JsonSerializerContext& context) override;
+    };
+
+    class JsonMatrix3x4Serializer
+        : public BaseJsonSerializer
+    {
+    public:
+        AZ_RTTI(JsonMatrix3x4Serializer, "{E801333B-4AF1-4F43-976C-579670B02DC5}", BaseJsonSerializer);
+        AZ_CLASS_ALLOCATOR_DECL;
+        JsonSerializationResult::Result Load(void* outputValue, const Uuid& outputValueTypeId, const rapidjson::Value& inputValue,
+            JsonDeserializerContext& context) override;
+        JsonSerializationResult::Result Store(rapidjson::Value& outputValue, const void* inputValue, const void* defaultValue,
+            const Uuid& valueTypeId, JsonSerializerContext& context) override;
+    };
+
+    class JsonMatrix4x4Serializer
+        : public BaseJsonSerializer
+    {
+    public:
+        AZ_RTTI(JsonMatrix4x4Serializer, "{46E888FC-248A-4910-9221-4E101A10AEA1}", BaseJsonSerializer);
+        AZ_CLASS_ALLOCATOR_DECL;
+        JsonSerializationResult::Result Load(void* outputValue, const Uuid& outputValueTypeId, const rapidjson::Value& inputValue,
+            JsonDeserializerContext& context) override;
+        JsonSerializationResult::Result Store(rapidjson::Value& outputValue, const void* inputValue, const void* defaultValue,
+            const Uuid& valueTypeId, JsonSerializerContext& context) override;
+    };
+}

Code/Framework/AzCore/AzCore/Math/MathReflection.cpp

@@ -24,6 +24,7 @@
 #include <AzCore/Math/Vector2.h>
 #include <AzCore/Math/Vector3.h>
 #include <AzCore/Math/Vector4.h>
+#include <AzCore/Math/MathMatrixSerializer.h>
 #include <AzCore/Math/MathVectorSerializer.h>
 #include <AzCore/Math/Color.h>
 #include <AzCore/Math/ColorSerializer.h>
@@ -366,6 +367,9 @@ namespace AZ
     {
         context.Serializer<JsonColorSerializer>()->HandlesType<Color>();
         context.Serializer<JsonUuidSerializer>()->HandlesType<Uuid>();
+        context.Serializer<JsonMatrix3x3Serializer>()->HandlesType<Matrix3x3>();
+        context.Serializer<JsonMatrix3x4Serializer>()->HandlesType<Matrix3x4>();
+        context.Serializer<JsonMatrix4x4Serializer>()->HandlesType<Matrix4x4>();
         context.Serializer<JsonVector2Serializer>()->HandlesType<Vector2>();
         context.Serializer<JsonVector3Serializer>()->HandlesType<Vector3>();
         context.Serializer<JsonVector4Serializer>()->HandlesType<Vector4>();

Code/Framework/AzCore/AzCore/Math/MathUtils.h

@@ -13,16 +13,17 @@
 #pragma once
 
 #include <AzCore/base.h>
+#include <AzCore/std/math.h>
+#include <AzCore/std/typetraits/conditional.h>
+#include <AzCore/std/typetraits/is_integral.h>
 #include <AzCore/std/typetraits/is_signed.h>
 #include <AzCore/std/typetraits/is_unsigned.h>
 #include <AzCore/std/utils.h>
-#include <math.h>
+
 #include <float.h>
 #include <limits>
-#include <cmath>
+#include <math.h>
 #include <utility>
-#include <AzCore/std/typetraits/conditional.h>
-#include <AzCore/std/typetraits/is_integral.h>
 
 // We have a separate inline define for math functions.
 // The performance of these functions is very sensitive to inlining, and some compilers don't deal well with this.
@@ -308,12 +309,12 @@ namespace AZ
 
     AZ_MATH_INLINE bool IsClose(float a, float b, float tolerance = Constants::Tolerance)
     {
-        return (fabsf(a - b) <= tolerance);
+        return (AZStd::abs(a - b) <= tolerance);
     }
 
     AZ_MATH_INLINE bool IsClose(double a, double b, double tolerance = Constants::Tolerance)
     {
-        return (fabs(a - b) <= tolerance);
+        return (AZStd::abs(a - b) <= tolerance);
     }
 
     //! Returns x >= 0.0f ? 1.0f : -1.0f.
@@ -402,12 +403,12 @@ namespace AZ
 
     AZ_MATH_INLINE float GetAbs(float a)
     {
-        return fabsf(a);
+        return AZStd::abs(a);
     }
 
     AZ_MATH_INLINE double GetAbs(double a)
     {
-        return std::abs(a);
+        return AZStd::abs(a);
     }
 
     AZ_MATH_INLINE float GetMod(float a, float b)
@@ -441,7 +442,7 @@ namespace AZ
     template<typename T>
     AZ_MATH_INLINE bool IsCloseMag(T x, T y, T epsilonValue = std::numeric_limits<T>::epsilon())
     {
-        return (std::fabs(x - y) <= epsilonValue * GetMax<T>(GetMax<T>(T(1.0), std::fabs(x)), std::fabs(y)));
+        return (AZStd::abs(x - y) <= epsilonValue * GetMax<T>(GetMax<T>(T(1.0), AZStd::abs(x)), AZStd::abs(y)));
     }
 
     //! ClampIfCloseMag(x, y, epsilon) returns y when x and y are within epsilon of each other (taking magnitude into account).  Otherwise returns x.

Code/Framework/AzCore/AzCore/Math/Matrix3x3.h

@@ -142,27 +142,44 @@ namespace AZ
         void SetBasis(const Vector3& basisX, const Vector3& basisY, const Vector3& basisZ);
         //! @}
 
-        Matrix3x3 operator*(const Matrix3x3& rhs) const;
-
         //! Calculates (this->GetTranspose() * rhs).
         Matrix3x3 TransposedMultiply(const Matrix3x3& rhs) const;
 
         //! Post-multiplies the matrix by a vector.
         Vector3 operator*(const Vector3& rhs) const;
 
-        Matrix3x3 operator+(const Matrix3x3& rhs) const;
-        Matrix3x3 operator-(const Matrix3x3& rhs) const;
-
-        Matrix3x3 operator*(float multiplier) const;
-        Matrix3x3 operator/(float divisor) const;
-
-        Matrix3x3 operator-() const;
-
-        Matrix3x3& operator*=(const Matrix3x3& rhs);
+        //! Operator for matrix-matrix addition.
+        //! @{
+        [[nodiscard]] Matrix3x3 operator+(const Matrix3x3& rhs) const;
         Matrix3x3& operator+=(const Matrix3x3& rhs);
+        //! @}
+
+        //! Operator for matrix-matrix substraction.
+        //! @{
+        [[nodiscard]] Matrix3x3 operator-(const Matrix3x3& rhs) const;
         Matrix3x3& operator-=(const Matrix3x3& rhs);
+        //! @}
+
+        //! Operator for matrix-matrix multiplication.
+        //! @{
+        [[nodiscard]] Matrix3x3 operator*(const Matrix3x3& rhs) const;
+        Matrix3x3& operator*=(const Matrix3x3& rhs);
+        //! @}
+
+        //! Operator for multiplying all matrix's elements with a scalar
+        //! @{
+        [[nodiscard]] Matrix3x3 operator*(float multiplier) const;
         Matrix3x3& operator*=(float multiplier);
+        //! @}
+
+        //! Operator for dividing all matrix's elements with a scalar
+        //! @{
+        [[nodiscard]] Matrix3x3 operator/(float divisor) const;
         Matrix3x3& operator/=(float divisor);
+        //! @}
+
+        //! Operator for negating all matrix's elements
+        [[nodiscard]] Matrix3x3 operator-() const;
 
         bool operator==(const Matrix3x3& rhs) const;
         bool operator!=(const Matrix3x3& rhs) const;
@@ -187,7 +204,10 @@ namespace AZ
         //! @}
 
         //! Gets the scale part of the transformation, i.e. the length of the scale components.
-        Vector3 RetrieveScale() const;
+        [[nodiscard]] Vector3 RetrieveScale() const;
+
+        //! Gets the squared scale part of the transformation (the squared length of the basis vectors).
+        [[nodiscard]] Vector3 RetrieveScaleSq() const;
 
         //! Gets the scale part of the transformation as in RetrieveScale, and also removes this scaling from the matrix.
         Vector3 ExtractScale();
@@ -195,6 +215,9 @@ namespace AZ
         //! Quick multiplication by a scale matrix, equivalent to m*=Matrix3x3::CreateScale(scale).
         void MultiplyByScale(const Vector3& scale);
 
+        //! Returns a matrix with the reciprocal scale, keeping the same rotation and translation.
+        [[nodiscard]] Matrix3x3 GetReciprocalScaled() const;
+
         //! Polar decomposition, M=U*H, U is orthogonal (unitary) and H is symmetric (hermitian).
         //! This function returns the orthogonal part only
         Matrix3x3 GetPolarDecomposition() const;
@@ -241,7 +264,9 @@ namespace AZ
     //! Note that this is not the usual multiplication order for transformations.
     Vector3& operator*=(Vector3& lhs, const Matrix3x3& rhs);
 
+    //! Pre-multiplies the matrix by a scalar.
     Matrix3x3 operator*(float lhs, const Matrix3x3& rhs);
-}
+
+} // namespace AZ
 
 #include <AzCore/Math/Matrix3x3.inl>

Code/Framework/AzCore/AzCore/Math/Matrix3x3.inl

@@ -392,14 +392,6 @@ namespace AZ
     }
 
 
-    AZ_MATH_INLINE Matrix3x3 Matrix3x3::operator*(const Matrix3x3& rhs) const
-    {
-        Matrix3x3 result;
-        Simd::Vec3::Mat3x3Multiply(GetSimdValues(), rhs.GetSimdValues(), result.GetSimdValues());
-        return result;
-    }
-
-
     AZ_MATH_INLINE Matrix3x3 Matrix3x3::TransposedMultiply(const Matrix3x3& rhs) const
     {
         Matrix3x3 result;
@@ -416,51 +408,12 @@ namespace AZ
 
     AZ_MATH_INLINE Matrix3x3 Matrix3x3::operator+(const Matrix3x3& rhs) const
     {
-        return Matrix3x3(Simd::Vec3::Add(m_rows[0].GetSimdValue(), rhs.m_rows[0].GetSimdValue())
-                       , Simd::Vec3::Add(m_rows[1].GetSimdValue(), rhs.m_rows[1].GetSimdValue())
-                       , Simd::Vec3::Add(m_rows[2].GetSimdValue(), rhs.m_rows[2].GetSimdValue()));
-    }
-
-
-    AZ_MATH_INLINE Matrix3x3 Matrix3x3::operator-(const Matrix3x3& rhs) const
-    {
-        return Matrix3x3(Simd::Vec3::Sub(m_rows[0].GetSimdValue(), rhs.m_rows[0].GetSimdValue())
-                       , Simd::Vec3::Sub(m_rows[1].GetSimdValue(), rhs.m_rows[1].GetSimdValue())
-                       , Simd::Vec3::Sub(m_rows[2].GetSimdValue(), rhs.m_rows[2].GetSimdValue()));
-    }
-
-
-    AZ_MATH_INLINE Matrix3x3 Matrix3x3::operator*(float multiplier) const
-    {
-        const Simd::Vec3::FloatType mulVec = Simd::Vec3::Splat(multiplier);
-        return Matrix3x3(Simd::Vec3::Mul(m_rows[0].GetSimdValue(), mulVec)
-                       , Simd::Vec3::Mul(m_rows[1].GetSimdValue(), mulVec)
-                       , Simd::Vec3::Mul(m_rows[2].GetSimdValue(), mulVec));
-    }
-
-
-    AZ_MATH_INLINE Matrix3x3 Matrix3x3::operator/(float divisor) const
-    {
-        const Simd::Vec3::FloatType divVec = Simd::Vec3::Splat(divisor);
-        return Matrix3x3(Simd::Vec3::Div(m_rows[0].GetSimdValue(), divVec)
-                       , Simd::Vec3::Div(m_rows[1].GetSimdValue(), divVec)
-                       , Simd::Vec3::Div(m_rows[2].GetSimdValue(), divVec));
-    }
-
-
-    AZ_MATH_INLINE Matrix3x3 Matrix3x3::operator-() const
-    {
-        const Simd::Vec3::FloatType zeroVec = Simd::Vec3::ZeroFloat();
-        return Matrix3x3(Simd::Vec3::Sub(zeroVec, m_rows[0].GetSimdValue())
-                       , Simd::Vec3::Sub(zeroVec, m_rows[1].GetSimdValue())
-                       , Simd::Vec3::Sub(zeroVec, m_rows[2].GetSimdValue()));
-    }
-
-
-    AZ_MATH_INLINE Matrix3x3& Matrix3x3::operator*=(const Matrix3x3& rhs)
-    {
-        *this = *this * rhs;
-        return *this;
+        return Matrix3x3
+        (
+            Simd::Vec3::Add(m_rows[0].GetSimdValue(), rhs.m_rows[0].GetSimdValue()),
+            Simd::Vec3::Add(m_rows[1].GetSimdValue(), rhs.m_rows[1].GetSimdValue()),
+            Simd::Vec3::Add(m_rows[2].GetSimdValue(), rhs.m_rows[2].GetSimdValue())
+        );
     }
 
 
@@ -471,6 +424,17 @@ namespace AZ
     }
 
 
+    AZ_MATH_INLINE Matrix3x3 Matrix3x3::operator-(const Matrix3x3& rhs) const
+    {
+        return Matrix3x3
+        (
+            Simd::Vec3::Sub(m_rows[0].GetSimdValue(), rhs.m_rows[0].GetSimdValue()),
+            Simd::Vec3::Sub(m_rows[1].GetSimdValue(), rhs.m_rows[1].GetSimdValue()),
+            Simd::Vec3::Sub(m_rows[2].GetSimdValue(), rhs.m_rows[2].GetSimdValue())
+        );
+    }
+
+
     AZ_MATH_INLINE Matrix3x3& Matrix3x3::operator-=(const Matrix3x3& rhs)
     {
         *this = *this - rhs;
@@ -478,6 +442,33 @@ namespace AZ
     }
 
 
+    AZ_MATH_INLINE Matrix3x3 Matrix3x3::operator*(const Matrix3x3& rhs) const
+    {
+        Matrix3x3 result;
+        Simd::Vec3::Mat3x3Multiply(GetSimdValues(), rhs.GetSimdValues(), result.GetSimdValues());
+        return result;
+    }
+
+
+    AZ_MATH_INLINE Matrix3x3& Matrix3x3::operator*=(const Matrix3x3& rhs)
+    {
+        *this = *this * rhs;
+        return *this;
+    }
+
+
+    AZ_MATH_INLINE Matrix3x3 Matrix3x3::operator*(float multiplier) const
+    {
+        const Simd::Vec3::FloatType mulVec = Simd::Vec3::Splat(multiplier);
+        return Matrix3x3
+        (
+            Simd::Vec3::Mul(m_rows[0].GetSimdValue(), mulVec),
+            Simd::Vec3::Mul(m_rows[1].GetSimdValue(), mulVec),
+            Simd::Vec3::Mul(m_rows[2].GetSimdValue(), mulVec)
+        );
+    }
+
+
     AZ_MATH_INLINE Matrix3x3& Matrix3x3::operator*=(float multiplier)
     {
         *this = *this * multiplier;
@@ -485,6 +476,18 @@ namespace AZ
     }
 
 
+    AZ_MATH_INLINE Matrix3x3 Matrix3x3::operator/(float divisor) const
+    {
+        const Simd::Vec3::FloatType divVec = Simd::Vec3::Splat(divisor);
+        return Matrix3x3
+        (
+            Simd::Vec3::Div(m_rows[0].GetSimdValue(), divVec),
+            Simd::Vec3::Div(m_rows[1].GetSimdValue(), divVec),
+            Simd::Vec3::Div(m_rows[2].GetSimdValue(), divVec)
+        );
+    }
+
+
     AZ_MATH_INLINE Matrix3x3& Matrix3x3::operator/=(float divisor)
     {
         *this = *this / divisor;
@@ -492,6 +495,18 @@ namespace AZ
     }
 
 
+    AZ_MATH_INLINE Matrix3x3 Matrix3x3::operator-() const
+    {
+        const Simd::Vec3::FloatType zeroVec = Simd::Vec3::ZeroFloat();
+        return Matrix3x3
+        (
+            Simd::Vec3::Sub(zeroVec, m_rows[0].GetSimdValue()),
+            Simd::Vec3::Sub(zeroVec, m_rows[1].GetSimdValue()),
+            Simd::Vec3::Sub(zeroVec, m_rows[2].GetSimdValue())
+        );
+    }
+
+
     AZ_MATH_INLINE bool Matrix3x3::operator==(const Matrix3x3& rhs) const
     {
         return (Simd::Vec3::CmpAllEq(m_rows[0].GetSimdValue(), rhs.m_rows[0].GetSimdValue())
@@ -552,6 +567,12 @@ namespace AZ
     }
 
 
+    AZ_MATH_INLINE Vector3 Matrix3x3::RetrieveScaleSq() const
+    {
+        return Vector3(GetBasisX().GetLengthSq(), GetBasisY().GetLengthSq(), GetBasisZ().GetLengthSq());
+    }
+
+
     AZ_MATH_INLINE Vector3 Matrix3x3::ExtractScale()
     {
         const Vector3 x = GetBasisX();
@@ -584,6 +605,14 @@ namespace AZ
     }
 
 
+    AZ_MATH_INLINE Matrix3x3 Matrix3x3::GetReciprocalScaled() const
+    {
+        Matrix3x3 result = *this;
+        result.MultiplyByScale(RetrieveScaleSq().GetReciprocal());
+        return result;
+    }
+
+
     AZ_MATH_INLINE void Matrix3x3::GetPolarDecomposition(Matrix3x3* orthogonalOut, Matrix3x3* symmetricOut) const
     {
         *orthogonalOut = GetPolarDecomposition();
@@ -679,8 +708,6 @@ namespace AZ
 
     AZ_MATH_INLINE Matrix3x3 operator*(float lhs, const Matrix3x3& rhs)
     {
-        const Simd::Vec3::FloatType lhsVec = Simd::Vec3::Splat(lhs);
-        const Simd::Vec3::FloatType* rows = rhs.GetSimdValues();
-        return Matrix3x3(Simd::Vec3::Mul(lhsVec, rows[0]), Simd::Vec3::Mul(lhsVec, rows[1]), Simd::Vec3::Mul(lhsVec, rows[2]));
+        return rhs * lhs;
     }
-}
+} // namespace AZ

Code/Framework/AzCore/AzCore/Math/Matrix3x4.h

@@ -225,11 +225,38 @@ namespace AZ
         //! Sets the three basis vectors and the translation.
         void SetBasisAndTranslation(const Vector3& basisX, const Vector3& basisY, const Vector3& basisZ, const Vector3& translation);
 
-        //! Operator for matrix-matrix multiplication.
-        [[nodiscard]] Matrix3x4 operator*(const Matrix3x4& rhs) const;
+        //! Operator for matrix-matrix addition.
+        //! @{
+        [[nodiscard]] Matrix3x4 operator+(const Matrix3x4& rhs) const;
+        Matrix3x4& operator+=(const Matrix3x4& rhs);
+        //! @}
 
-        //! Compound assignment operator for matrix-matrix multiplication.
+        //! Operator for matrix-matrix substraction.
+        //! @{
+        [[nodiscard]] Matrix3x4 operator-(const Matrix3x4& rhs) const;
+        Matrix3x4& operator-=(const Matrix3x4& rhs);
+        //! @}
+
+        //! Operator for matrix-matrix multiplication.
+        //! @{
+        [[nodiscard]] Matrix3x4 operator*(const Matrix3x4& rhs) const;
         Matrix3x4& operator*=(const Matrix3x4& rhs);
+        //! @}
+
+        //! Operator for multiplying all matrix's elements with a scalar
+        //! @{
+        [[nodiscard]] Matrix3x4 operator*(float multiplier) const;
+        Matrix3x4& operator*=(float multiplier);
+        //! @}
+
+        //! Operator for dividing all matrix's elements with a scalar
+        //! @{
+        [[nodiscard]] Matrix3x4 operator/(float divisor) const;
+        Matrix3x4& operator/=(float divisor);
+        //! @}
+
+        //! Operator for negating all matrix's elements
+        [[nodiscard]] Matrix3x4 operator-() const;
 
         //! Operator for transforming a Vector3.
         [[nodiscard]] Vector3 operator*(const Vector3& rhs) const;
@@ -274,12 +301,18 @@ namespace AZ
         //! Gets the scale part of the transformation (the length of the basis vectors).
         [[nodiscard]] Vector3 RetrieveScale() const;
 
+        //! Gets the squared scale part of the transformation (the squared length of the basis vectors).
+        [[nodiscard]] Vector3 RetrieveScaleSq() const;
+
         //! Gets the scale part of the transformation as in RetrieveScale, and also removes this scaling from the matrix.
         Vector3 ExtractScale();
 
         //! Multiplies the basis vectors of the matrix by the elements of the scale specified.
         void MultiplyByScale(const Vector3& scale);
 
+        //! Returns a matrix with the reciprocal scale, keeping the same rotation and translation.
+        [[nodiscard]] Matrix3x4 GetReciprocalScaled() const;
+
         //! Tests if the 3x3 part of the matrix is orthogonal.
         bool IsOrthogonal(float tolerance = Constants::Tolerance) const;
 
@@ -335,6 +368,10 @@ namespace AZ
 
         Vector4 m_rows[RowCount];
     };
+
+    //! Pre-multiplies the matrix by a scalar.
+    Matrix3x4 operator*(float lhs, const Matrix3x4& rhs);
+
 } // namespace AZ
 
 #include <AzCore/Math/Matrix3x4.inl>

Code/Framework/AzCore/AzCore/Math/Matrix3x4.inl

@@ -472,6 +472,42 @@ namespace AZ
     }
 
 
+    AZ_MATH_INLINE Matrix3x4 Matrix3x4::operator+(const Matrix3x4& rhs) const
+    {
+        return Matrix3x4
+        (
+            Simd::Vec4::Add(m_rows[0].GetSimdValue(), rhs.m_rows[0].GetSimdValue()),
+            Simd::Vec4::Add(m_rows[1].GetSimdValue(), rhs.m_rows[1].GetSimdValue()),
+            Simd::Vec4::Add(m_rows[2].GetSimdValue(), rhs.m_rows[2].GetSimdValue())
+        );
+    }
+
+
+    AZ_MATH_INLINE Matrix3x4& Matrix3x4::operator+=(const Matrix3x4& rhs)
+    {
+        *this = *this + rhs;
+        return *this;
+    }
+
+
+    AZ_MATH_INLINE Matrix3x4 Matrix3x4::operator-(const Matrix3x4& rhs) const
+    {
+        return Matrix3x4
+        (
+            Simd::Vec4::Sub(m_rows[0].GetSimdValue(), rhs.m_rows[0].GetSimdValue()),
+            Simd::Vec4::Sub(m_rows[1].GetSimdValue(), rhs.m_rows[1].GetSimdValue()),
+            Simd::Vec4::Sub(m_rows[2].GetSimdValue(), rhs.m_rows[2].GetSimdValue())
+        );
+    }
+
+
+    AZ_MATH_INLINE Matrix3x4& Matrix3x4::operator-=(const Matrix3x4& rhs)
+    {
+        *this = *this - rhs;
+        return *this;
+    }
+
+
     AZ_MATH_INLINE Matrix3x4 Matrix3x4::operator*(const Matrix3x4& rhs) const
     {
         Matrix3x4 result;
@@ -487,6 +523,56 @@ namespace AZ
     }
 
 
+    AZ_MATH_INLINE Matrix3x4 Matrix3x4::operator*(float multiplier) const
+    {
+        const Simd::Vec4::FloatType mulVec = Simd::Vec4::Splat(multiplier);
+        return Matrix3x4
+        (
+            Simd::Vec4::Mul(m_rows[0].GetSimdValue(), mulVec),
+            Simd::Vec4::Mul(m_rows[1].GetSimdValue(), mulVec),
+            Simd::Vec4::Mul(m_rows[2].GetSimdValue(), mulVec)
+        );
+    }
+
+
+    AZ_MATH_INLINE Matrix3x4& Matrix3x4::operator*=(float multiplier)
+    {
+        *this = *this * multiplier;
+        return *this;
+    }
+
+
+    AZ_MATH_INLINE Matrix3x4 Matrix3x4::operator/(float divisor) const
+    {
+        const Simd::Vec4::FloatType divVec = Simd::Vec4::Splat(divisor);
+        return Matrix3x4
+        (
+            Simd::Vec4::Div(m_rows[0].GetSimdValue(), divVec),
+            Simd::Vec4::Div(m_rows[1].GetSimdValue(), divVec),
+            Simd::Vec4::Div(m_rows[2].GetSimdValue(), divVec)
+        );
+    }
+
+
+    AZ_MATH_INLINE Matrix3x4& Matrix3x4::operator/=(float divisor)
+    {
+        *this = *this / divisor;
+        return *this;
+    }
+
+
+    AZ_MATH_INLINE Matrix3x4 Matrix3x4::operator-() const
+    {
+        const Simd::Vec4::FloatType zeroVec = Simd::Vec4::ZeroFloat();
+        return Matrix3x4
+        (
+            Simd::Vec4::Sub(zeroVec, m_rows[0].GetSimdValue()),
+            Simd::Vec4::Sub(zeroVec, m_rows[1].GetSimdValue()),
+            Simd::Vec4::Sub(zeroVec, m_rows[2].GetSimdValue())
+        );
+    }
+
+
     AZ_MATH_INLINE Vector3 Matrix3x4::operator*(const Vector3& rhs) const
     {
         return Vector3
@@ -583,6 +669,12 @@ namespace AZ
     }
 
 
+    AZ_MATH_INLINE Vector3 Matrix3x4::RetrieveScaleSq() const
+    {
+        return Vector3(GetColumn(0).GetLengthSq(), GetColumn(1).GetLengthSq(), GetColumn(2).GetLengthSq());
+    }
+
+
     AZ_MATH_INLINE Vector3 Matrix3x4::ExtractScale()
     {
         const Vector3 scale = RetrieveScale();
@@ -600,6 +692,14 @@ namespace AZ
     }
 
 
+    AZ_MATH_INLINE Matrix3x4 Matrix3x4::GetReciprocalScaled() const
+    {
+        Matrix3x4 result = *this;
+        result.MultiplyByScale(RetrieveScaleSq().GetReciprocal());
+        return result;
+    }
+
+
     AZ_MATH_INLINE void Matrix3x4::Orthogonalize()
     {
         *this = GetOrthogonalized();
@@ -660,4 +760,10 @@ namespace AZ
     {
         return reinterpret_cast<Simd::Vec4::FloatType*>(m_rows);
     }
+
+
+    AZ_MATH_INLINE Matrix3x4 operator*(float lhs, const Matrix3x4& rhs)
+    {
+        return rhs * lhs;
+    }
 } // namespace AZ

Code/Framework/AzCore/AzCore/Math/Matrix4x4.h

@@ -171,14 +171,38 @@ namespace AZ
         void SetTranslation(const Vector3& v);
         //! @}
 
-        Matrix4x4 operator+(const Matrix4x4& rhs) const;
+        //! Operator for matrix-matrix addition.
+        //! @{
+        [[nodiscard]] Matrix4x4 operator+(const Matrix4x4& rhs) const;
         Matrix4x4& operator+=(const Matrix4x4& rhs);
+        //! @}
 
-        Matrix4x4 operator-(const Matrix4x4& rhs) const;
+        //! Operator for matrix-matrix substraction.
+        //! @{
+        [[nodiscard]] Matrix4x4 operator-(const Matrix4x4& rhs) const;
         Matrix4x4& operator-=(const Matrix4x4& rhs);
+        //! @}
 
-        Matrix4x4 operator*(const Matrix4x4& rhs) const;
+        //! Operator for matrix-matrix multiplication.
+        //! @{
+        [[nodiscard]] Matrix4x4 operator*(const Matrix4x4& rhs) const;
         Matrix4x4& operator*=(const Matrix4x4& rhs);
+        //! @}
+
+        //! Operator for multiplying all matrix's elements with a scalar
+        //! @{
+        [[nodiscard]] Matrix4x4 operator*(float multiplier) const;
+        Matrix4x4& operator*=(float multiplier);
+        //! @}
+
+        //! Operator for dividing all matrix's elements with a scalar
+        //! @{
+        [[nodiscard]] Matrix4x4 operator/(float divisor) const;
+        Matrix4x4& operator/=(float divisor);
+        //! @}
+
+        //! Operator for negating all matrix's elements
+        [[nodiscard]] Matrix4x4 operator-() const;
 
         //! Post-multiplies the matrix by a vector.
         //! Assumes that the w-component of the Vector3 is 1.0.
@@ -222,7 +246,10 @@ namespace AZ
         //! @}
 
         //! Gets the scale part of the transformation, i.e. the length of the scale components.
-        Vector3 RetrieveScale() const;
+        [[nodiscard]] Vector3 RetrieveScale() const;
+
+        //! Gets the squared scale part of the transformation (the squared length of the basis vectors).
+        [[nodiscard]] Vector3 RetrieveScaleSq() const;
 
         //! Gets the scale part of the transformation as in RetrieveScale, and also removes this scaling from the matrix.
         Vector3 ExtractScale();
@@ -230,6 +257,9 @@ namespace AZ
         //! Quick multiplication by a scale matrix, equivalent to m*=Matrix4x4::CreateScale(scale).
         void MultiplyByScale(const Vector3& scale);
 
+        //! Returns a matrix with the reciprocal scale, keeping the same rotation and translation.
+        [[nodiscard]] Matrix4x4 GetReciprocalScaled() const;
+
         bool IsClose(const Matrix4x4& rhs, float tolerance = Constants::Tolerance) const;
 
         bool operator==(const Matrix4x4& rhs) const;
@@ -270,6 +300,10 @@ namespace AZ
     //! Pre-multiplies the matrix by a vector in-place.
     //! Note that this is not the usual multiplication order for transformations.
     Vector4& operator*=(Vector4& lhs, const Matrix4x4& rhs);
-}
+
+    //! Pre-multiplies the matrix by a scalar.
+    Matrix4x4 operator*(float lhs, const Matrix4x4& rhs);
+
+} // namespace AZ
 
 #include <AzCore/Math/Matrix4x4.inl>

Code/Framework/AzCore/AzCore/Math/Matrix4x4.inl

@@ -480,20 +480,12 @@ namespace AZ
     AZ_MATH_INLINE Matrix4x4 Matrix4x4::operator+(const Matrix4x4& rhs) const
     {
         return Matrix4x4
-            ( Simd::Vec4::Add(m_rows[0].GetSimdValue(), rhs.m_rows[0].GetSimdValue())
-            , Simd::Vec4::Add(m_rows[1].GetSimdValue(), rhs.m_rows[1].GetSimdValue())
-            , Simd::Vec4::Add(m_rows[2].GetSimdValue(), rhs.m_rows[2].GetSimdValue())
-            , Simd::Vec4::Add(m_rows[3].GetSimdValue(), rhs.m_rows[3].GetSimdValue()));
-    }
-
-
-    AZ_MATH_INLINE Matrix4x4 Matrix4x4::operator-(const Matrix4x4& rhs) const
-    {
-        return Matrix4x4
-            ( Simd::Vec4::Sub(m_rows[0].GetSimdValue(), rhs.m_rows[0].GetSimdValue())
-            , Simd::Vec4::Sub(m_rows[1].GetSimdValue(), rhs.m_rows[1].GetSimdValue())
-            , Simd::Vec4::Sub(m_rows[2].GetSimdValue(), rhs.m_rows[2].GetSimdValue())
-            , Simd::Vec4::Sub(m_rows[3].GetSimdValue(), rhs.m_rows[3].GetSimdValue()));
+        (
+            Simd::Vec4::Add(m_rows[0].GetSimdValue(), rhs.m_rows[0].GetSimdValue()),
+            Simd::Vec4::Add(m_rows[1].GetSimdValue(), rhs.m_rows[1].GetSimdValue()),
+            Simd::Vec4::Add(m_rows[2].GetSimdValue(), rhs.m_rows[2].GetSimdValue()),
+            Simd::Vec4::Add(m_rows[3].GetSimdValue(), rhs.m_rows[3].GetSimdValue())
+        );
     }
 
     AZ_MATH_INLINE Matrix4x4& Matrix4x4::operator+=(const Matrix4x4& rhs)
@@ -502,6 +494,18 @@ namespace AZ
         return *this;
     }
 
+
+    AZ_MATH_INLINE Matrix4x4 Matrix4x4::operator-(const Matrix4x4& rhs) const
+    {
+        return Matrix4x4
+        (
+            Simd::Vec4::Sub(m_rows[0].GetSimdValue(), rhs.m_rows[0].GetSimdValue()),
+            Simd::Vec4::Sub(m_rows[1].GetSimdValue(), rhs.m_rows[1].GetSimdValue()),
+            Simd::Vec4::Sub(m_rows[2].GetSimdValue(), rhs.m_rows[2].GetSimdValue()),
+            Simd::Vec4::Sub(m_rows[3].GetSimdValue(), rhs.m_rows[3].GetSimdValue())
+        );
+    }
+
     AZ_MATH_INLINE Matrix4x4& Matrix4x4::operator-=(const Matrix4x4& rhs)
     {
         *this = *this - rhs;
@@ -523,6 +527,59 @@ namespace AZ
     }
 
 
+    AZ_MATH_INLINE Matrix4x4 Matrix4x4::operator*(float multiplier) const
+    {
+        const Simd::Vec4::FloatType mulVec = Simd::Vec4::Splat(multiplier);
+        return Matrix4x4
+        (
+            Simd::Vec4::Mul(m_rows[0].GetSimdValue(), mulVec),
+            Simd::Vec4::Mul(m_rows[1].GetSimdValue(), mulVec),
+            Simd::Vec4::Mul(m_rows[2].GetSimdValue(), mulVec),
+            Simd::Vec4::Mul(m_rows[3].GetSimdValue(), mulVec)
+        );
+    }
+
+
+    AZ_MATH_INLINE Matrix4x4& Matrix4x4::operator*=(float multiplier)
+    {
+        *this = *this * multiplier;
+        return *this;
+    }
+
+
+    AZ_MATH_INLINE Matrix4x4 Matrix4x4::operator/(float divisor) const
+    {
+        const Simd::Vec4::FloatType divVec = Simd::Vec4::Splat(divisor);
+        return Matrix4x4
+        (
+            Simd::Vec4::Div(m_rows[0].GetSimdValue(), divVec),
+            Simd::Vec4::Div(m_rows[1].GetSimdValue(), divVec),
+            Simd::Vec4::Div(m_rows[2].GetSimdValue(), divVec),
+            Simd::Vec4::Div(m_rows[3].GetSimdValue(), divVec)
+        );
+    }
+
+
+    AZ_MATH_INLINE Matrix4x4& Matrix4x4::operator/=(float divisor)
+    {
+        *this = *this / divisor;
+        return *this;
+    }
+
+
+    AZ_MATH_INLINE Matrix4x4 Matrix4x4::operator-() const
+    {
+        const Simd::Vec4::FloatType zeroVec = Simd::Vec4::ZeroFloat();
+        return Matrix4x4
+        (
+            Simd::Vec4::Sub(zeroVec, m_rows[0].GetSimdValue()),
+            Simd::Vec4::Sub(zeroVec, m_rows[1].GetSimdValue()),
+            Simd::Vec4::Sub(zeroVec, m_rows[2].GetSimdValue()),
+            Simd::Vec4::Sub(zeroVec, m_rows[3].GetSimdValue())
+        );
+    }
+
+
     AZ_MATH_INLINE Vector3 Matrix4x4::operator*(const Vector3& rhs) const
     {
         return Vector3(Simd::Vec4::Mat4x4TransformPoint3(GetSimdValues(), rhs.GetSimdValue()));
@@ -595,6 +652,12 @@ namespace AZ
     }
 
 
+    AZ_MATH_INLINE Vector3 Matrix4x4::RetrieveScaleSq() const
+    {
+        return Vector3(GetBasisX().GetLengthSq(), GetBasisY().GetLengthSq(), GetBasisZ().GetLengthSq());
+    }
+
+
     AZ_MATH_INLINE Vector3 Matrix4x4::ExtractScale()
     {
         Vector4 x = GetBasisX();
@@ -619,6 +682,14 @@ namespace AZ
     }
 
 
+    AZ_MATH_INLINE Matrix4x4 Matrix4x4::GetReciprocalScaled() const
+    {
+        Matrix4x4 result = *this;
+        result.MultiplyByScale(RetrieveScaleSq().GetReciprocal());
+        return result;
+    }
+
+
     AZ_MATH_INLINE bool Matrix4x4::IsClose(const Matrix4x4& rhs, float tolerance) const
     {
         const Simd::Vec4::FloatType vecTolerance = Simd::Vec4::Splat(tolerance);
@@ -702,4 +773,10 @@ namespace AZ
         lhs = lhs * rhs;
         return lhs;
     }
-}
+
+
+    AZ_MATH_INLINE Matrix4x4 operator*(float lhs, const Matrix4x4& rhs)
+    {
+        return rhs * lhs;
+    }
+} // namespace AZ

Code/Framework/AzCore/AzCore/RTTI/AzStdOnDemandReflection.inl

@@ -816,7 +816,7 @@ namespace AZ
         template<size_t Index>
         static void ReflectUnpackMethodFold(BehaviorContext::ClassBuilder<ContainerType>& builder)
         {
-            AZStd::string methodName = AZStd::string::format("Get%ld", Index);
+            const AZStd::string methodName = AZStd::string::format("Get%zu", Index);
             builder->Method(methodName.data(), [](ContainerType& value) { return AZStd::get<Index>(value); })
                 ->Attribute(AZ::Script::Attributes::ExcludeFrom, AZ::Script::Attributes::ExcludeFlags::All)
                 ->Attribute(AZ::ScriptCanvasAttributes::TupleGetFunctionIndex, Index)

Code/Framework/AzCore/AzCore/Serialization/EditContextConstants.inl

@@ -53,6 +53,10 @@ namespace AZ
             //! RemoveableByUser : A bool which determines if the component can be removed by the user.
             //! Setting this to false prevents the user from removing this component. Default behavior is removeable by user.
             const static AZ::Crc32 RemoveableByUser = AZ_CRC("RemoveableByUser", 0x32c7fd50);
+            //! An int which, if specified, causes a component to be forced to a particular position in the sorted list of
+            //! components on an entity, and prevents dragging or moving operations which would affect that position.
+            const static AZ::Crc32 FixedComponentListIndex = AZ_CRC_CE("FixedComponentListIndex");
+
             const static AZ::Crc32 AppearsInAddComponentMenu = AZ_CRC("AppearsInAddComponentMenu", 0x53790e31);
             const static AZ::Crc32 ForceAutoExpand = AZ_CRC("ForceAutoExpand", 0x1a5c79d2); // Ignores expansion state set by user, enforces expansion.
             const static AZ::Crc32 AutoExpand = AZ_CRC("AutoExpand", 0x306ff5c0); // Expands automatically unless user changes expansion state.

Code/Framework/AzCore/AzCore/Serialization/Json/ArraySerializer.cpp

@@ -74,7 +74,7 @@ namespace AZ
                 "Unable to retrieve the correct container information for AZStd::array instance.");
         }
 
-        Flags flags = Flags::None;
+        ContinuationFlags flags = ContinuationFlags::None;
         Uuid elementTypeId = Uuid::CreateNull();
         auto typeEnumCallback = [&elementTypeId, &flags](const Uuid&, const SerializeContext::ClassElement* genericClassElement)
         {
@@ -82,7 +82,7 @@ namespace AZ
             elementTypeId = genericClassElement->m_typeId;
             if (genericClassElement->m_flags & SerializeContext::ClassElement::Flags::FLG_POINTER)
             {
-                flags = Flags::ResolvePointer;
+                flags = ContinuationFlags::ResolvePointer;
             }
             return false;
         };
@@ -161,7 +161,7 @@ namespace AZ
                 "Not enough entries in JSON array to load an AZStd::array from.");
         }
 
-        Flags flags = Flags::None;
+        ContinuationFlags flags = ContinuationFlags::None;
         Uuid elementTypeId = Uuid::CreateNull();
         auto typeEnumCallback = [&elementTypeId, &flags](const Uuid&, const SerializeContext::ClassElement* genericClassElement)
         {
@@ -169,7 +169,7 @@ namespace AZ
             elementTypeId = genericClassElement->m_typeId;
             if (genericClassElement->m_flags & SerializeContext::ClassElement::Flags::FLG_POINTER)
             {
-                flags = Flags::ResolvePointer;
+                flags = ContinuationFlags::ResolvePointer;
             }
             return false;
         };

Code/Framework/AzCore/AzCore/Serialization/Json/BaseJsonSerializer.cpp

@@ -208,22 +208,28 @@ namespace AZ
     // BaseJsonSerializer
     //
 
-    JsonSerializationResult::ResultCode BaseJsonSerializer::ContinueLoading(void* object, const Uuid& typeId, const rapidjson::Value& value,
-        JsonDeserializerContext& context, Flags flags)
+    BaseJsonSerializer::OperationFlags BaseJsonSerializer::GetOperationsFlags() const
     {
-        return flags & Flags::ResolvePointer ?
-            JsonDeserializer::LoadToPointer(object, typeId, value, context) :
-            JsonDeserializer::Load(object, typeId, value, context);
+        return OperationFlags::None;
     }
 
-    JsonSerializationResult::ResultCode BaseJsonSerializer::ContinueStoring(rapidjson::Value& output, const void* object,
-        const void* defaultObject, const Uuid& typeId, JsonSerializerContext& context, Flags flags)
+    JsonSerializationResult::ResultCode BaseJsonSerializer::ContinueLoading(
+        void* object, const Uuid& typeId, const rapidjson::Value& value, JsonDeserializerContext& context, ContinuationFlags flags)
+    {
+        return (flags & ContinuationFlags::ResolvePointer) == ContinuationFlags::ResolvePointer
+            ? JsonDeserializer::LoadToPointer(object, typeId, value, context)
+            : JsonDeserializer::Load(object, typeId, value, context);
+    }
+
+    JsonSerializationResult::ResultCode BaseJsonSerializer::ContinueStoring(
+        rapidjson::Value& output, const void* object, const void* defaultObject, const Uuid& typeId, JsonSerializerContext& context,
+        ContinuationFlags flags)
     {
         using namespace JsonSerializationResult;
 
-        if (flags & Flags::ReplaceDefault && !context.ShouldKeepDefaults())
+        if ((flags & ContinuationFlags::ReplaceDefault) == ContinuationFlags::ReplaceDefault && !context.ShouldKeepDefaults())
         {
-            if (flags & Flags::ResolvePointer)
+            if ((flags & ContinuationFlags::ResolvePointer) == ContinuationFlags::ResolvePointer)
             {
                 return JsonSerializer::StoreFromPointer(output, object, nullptr, typeId, context);
             }
@@ -248,7 +254,7 @@ namespace AZ
             }
         }
         
-        return flags & Flags::ResolvePointer ?
+        return (flags & ContinuationFlags::ResolvePointer) == ContinuationFlags::ResolvePointer ?
             JsonSerializer::StoreFromPointer(output, object, defaultObject, typeId, context) :
             JsonSerializer::Store(output, object, defaultObject, typeId, context);
     }
@@ -265,8 +271,9 @@ namespace AZ
         return JsonSerializer::StoreTypeName(output, typeId, context);
     }
 
-    JsonSerializationResult::ResultCode BaseJsonSerializer::ContinueLoadingFromJsonObjectField(void* object, const Uuid& typeId, const rapidjson::Value& value,
-        rapidjson::Value::StringRefType memberName, JsonDeserializerContext& context, Flags flags)
+    JsonSerializationResult::ResultCode BaseJsonSerializer::ContinueLoadingFromJsonObjectField(
+        void* object, const Uuid& typeId, const rapidjson::Value& value, rapidjson::Value::StringRefType memberName,
+        JsonDeserializerContext& context, ContinuationFlags flags)
     {
         using namespace JsonSerializationResult;
 
@@ -291,7 +298,7 @@ namespace AZ
 
     JsonSerializationResult::ResultCode BaseJsonSerializer::ContinueStoringToJsonObjectField(rapidjson::Value& output,
         rapidjson::Value::StringRefType newMemberName, const void* object, const void* defaultObject,
-        const Uuid& typeId, JsonSerializerContext& context, Flags flags)
+        const Uuid& typeId, JsonSerializerContext& context, ContinuationFlags flags)
     {
         using namespace JsonSerializationResult;
 

Code/Framework/AzCore/AzCore/Serialization/Json/BaseJsonSerializer.h

@@ -161,13 +161,19 @@ namespace AZ
     public:
         AZ_RTTI(BaseJsonSerializer, "{7291FFDC-D339-40B5-BB26-EA067A327B21}");
         
-        enum Flags
+        enum class ContinuationFlags
         {
-            None = 0, //! No extra flags.
+            None = 0,                //! No extra flags.
             ResolvePointer = 1 << 0, //! The pointer passed in contains a pointer. The (de)serializer will attempt to resolve to an instance.
             ReplaceDefault = 1 << 1  //! The default value provided for storing will be replaced with a newly created one.
         };
 
+        enum class OperationFlags
+        {
+            None = 0,               //! No flags that control how the custom json serializer is used.
+            ManualDefault = 1 << 0  //! Even if an (explicit) default is found the custom json serializer will still be called.
+        };
+
         virtual ~BaseJsonSerializer() = default;
 
         //! Transforms the data from the rapidjson Value to outputValue, if the conversion is possible and supported.
@@ -180,6 +186,9 @@ namespace AZ
         virtual JsonSerializationResult::Result Store(rapidjson::Value& outputValue, const void* inputValue, const void* defaultValue,
             const Uuid& valueTypeId, JsonSerializerContext& context) = 0;
 
+        //! Returns the operation flags which tells the Json Serialization how this custom json serializer can be used.
+        virtual OperationFlags GetOperationsFlags() const;
+
     protected:
         //! Continues loading of a (sub)value. Use this function to load member variables for instance. This is more optimal than 
         //! directly calling the json serialization.
@@ -187,8 +196,9 @@ namespace AZ
         //! @param typeId Type id of the object passed in.
         //! @param value The value in the JSON document where the deserializer will start reading data from.
         //! @param context The context used during deserialization. Use the value passed in from Load.
-        JsonSerializationResult::ResultCode ContinueLoading(void* object, const Uuid& typeId, const rapidjson::Value& value,
-            JsonDeserializerContext& context, Flags flags = Flags::None);
+        JsonSerializationResult::ResultCode ContinueLoading(
+            void* object, const Uuid& typeId, const rapidjson::Value& value, JsonDeserializerContext& context,
+            ContinuationFlags flags = ContinuationFlags::None);
 
         //! Continues storing of a (sub)value. Use this function to store member variables for instance. This is more optimal than 
         //! directly calling the json serialization.
@@ -200,8 +210,9 @@ namespace AZ
         //!     the settings.
         //! @param typeId The type id of the object and default object.
         //! @param context The context used during serialization. Use the value passed in from Store.
-        JsonSerializationResult::ResultCode ContinueStoring(rapidjson::Value& output, const void* object, const void* defaultObject, 
-            const Uuid& typeId, JsonSerializerContext& context, Flags flags = Flags::None);
+        JsonSerializationResult::ResultCode ContinueStoring(
+            rapidjson::Value& output, const void* object, const void* defaultObject, const Uuid& typeId, JsonSerializerContext& context,
+            ContinuationFlags flags = ContinuationFlags::None);
 
         //! Retrieves the type id from a json object or json string.
         //! @param typeId The retrieved type id.
@@ -222,12 +233,14 @@ namespace AZ
             const Uuid& typeId, JsonSerializerContext& context);
 
         //! Helper function similar to ContinueLoading, but loads the data as a member of 'value' rather than 'value' itself, if it exists.
-        JsonSerializationResult::ResultCode ContinueLoadingFromJsonObjectField(void* object, const Uuid& typeId, const rapidjson::Value& value,
-            rapidjson::Value::StringRefType memberName, JsonDeserializerContext& context, Flags flags = Flags::None);
+        JsonSerializationResult::ResultCode ContinueLoadingFromJsonObjectField(
+            void* object, const Uuid& typeId, const rapidjson::Value& value, rapidjson::Value::StringRefType memberName,
+            JsonDeserializerContext& context, ContinuationFlags flags = ContinuationFlags::None);
 
         //! Helper function similar to ContinueStoring, but stores the data as a member of 'output' rather than overwriting 'output'.
-        JsonSerializationResult::ResultCode ContinueStoringToJsonObjectField(rapidjson::Value& output, rapidjson::Value::StringRefType newMemberName,
-            const void* object, const void* defaultObject, const Uuid& typeId, JsonSerializerContext& context, Flags flags = Flags::None);
+        JsonSerializationResult::ResultCode ContinueStoringToJsonObjectField(
+            rapidjson::Value& output, rapidjson::Value::StringRefType newMemberName, const void* object, const void* defaultObject,
+            const Uuid& typeId, JsonSerializerContext& context, ContinuationFlags flags = ContinuationFlags::None);
 
         //! Checks if a value is an explicit default. This useful for containers where not storing anything as a default would mean
         //! a slot wouldn't be used so something has to be added to represent the fully default target.
@@ -238,6 +251,7 @@ namespace AZ
         rapidjson::Value GetExplicitDefault();
     };
 
-    AZ_DEFINE_ENUM_BITWISE_OPERATORS(AZ::BaseJsonSerializer::Flags)
+    AZ_DEFINE_ENUM_BITWISE_OPERATORS(AZ::BaseJsonSerializer::ContinuationFlags)
+    AZ_DEFINE_ENUM_BITWISE_OPERATORS(AZ::BaseJsonSerializer::OperationFlags)
 
 } // namespace AZ

Code/Framework/AzCore/AzCore/Serialization/Json/BasicContainerSerializer.cpp

@@ -75,9 +75,10 @@ namespace AZ
         auto elementCallback = [this, &array, &retVal, &index, &context]
             (void* elementPtr, const Uuid& elementId, const SerializeContext::ClassData*, const SerializeContext::ClassElement* classElement)
         {
-            Flags flags = classElement->m_flags & SerializeContext::ClassElement::Flags::FLG_POINTER ?
-                Flags::ResolvePointer : Flags::None;
-            flags |= Flags::ReplaceDefault;
+            ContinuationFlags flags = classElement->m_flags & SerializeContext::ClassElement::Flags::FLG_POINTER
+                ? ContinuationFlags::ResolvePointer
+                : ContinuationFlags::None;
+            flags |= ContinuationFlags::ReplaceDefault;
             
             ScopedContextPath subPath(context, index);
             index++;
@@ -161,8 +162,9 @@ namespace AZ
         container->EnumTypes(typeEnumCallback);
         AZ_Assert(classElement, "No class element found for the type in the basic container.");
 
-        Flags flags = classElement->m_flags & SerializeContext::ClassElement::Flags::FLG_POINTER ?
-            Flags::ResolvePointer : Flags::None;
+        ContinuationFlags flags = classElement->m_flags & SerializeContext::ClassElement::Flags::FLG_POINTER
+            ? ContinuationFlags::ResolvePointer
+            : ContinuationFlags::None;
 
         const size_t capacity = container->IsFixedCapacity() ? container->Capacity(outputValue) : std::numeric_limits<size_t>::max();
 

Code/Framework/AzCore/AzCore/Serialization/Json/JsonDeserializer.cpp

@@ -22,6 +22,19 @@
 
 namespace AZ
 {
+    JsonSerializationResult::ResultCode JsonDeserializer::DeserializerDefaultCheck(BaseJsonSerializer* serializer, void* object,
+        const Uuid& typeId, const rapidjson::Value& value, JsonDeserializerContext& context)
+    {
+        using namespace AZ::JsonSerializationResult;
+
+        bool isExplicitDefault = IsExplicitDefault(value);
+        bool manuallyDefaults = (serializer->GetOperationsFlags() & BaseJsonSerializer::OperationFlags::ManualDefault) ==
+            BaseJsonSerializer::OperationFlags::ManualDefault;
+        return !isExplicitDefault || (isExplicitDefault && manuallyDefaults)
+            ? serializer->Load(object, typeId, value, context)
+            : context.Report(Tasks::ReadField, Outcomes::DefaultsUsed, "Value has an explicit default.");
+    }
+
     JsonSerializationResult::ResultCode JsonDeserializer::Load(void* object, const Uuid& typeId, const rapidjson::Value& value,
         JsonDeserializerContext& context)
     {
@@ -33,17 +46,12 @@ namespace AZ
                 "Target object for Json Serialization is pointing to nothing during loading.");
         }
 
-        if (IsExplicitDefault(value))
-        {
-            return context.Report(Tasks::ReadField, Outcomes::DefaultsUsed, "Value has an explicit default.");
-        }
-
         BaseJsonSerializer* serializer = context.GetRegistrationContext()->GetSerializerForType(typeId);
         if (serializer)
         {
-            return serializer->Load(object, typeId, value, context);
+            return DeserializerDefaultCheck(serializer, object, typeId, value, context);
         }
-        
+
         const SerializeContext::ClassData* classData = context.GetSerializeContext()->FindClassData(typeId);
         if (!classData)
         {
@@ -56,9 +64,14 @@ namespace AZ
             serializer = context.GetRegistrationContext()->GetSerializerForType(classData->m_azRtti->GetGenericTypeId());
             if (serializer)
             {
-                return serializer->Load(object, typeId, value, context);
+                return DeserializerDefaultCheck(serializer, object, typeId, value, context);
             }
         }
+
+        if (IsExplicitDefault(value))
+        {
+            return context.Report(Tasks::ReadField, Outcomes::DefaultsUsed, "Value has an explicit default.");
+        }
         
         if (classData->m_azRtti && (classData->m_azRtti->GetTypeTraits() & AZ::TypeTraits::is_enum) == AZ::TypeTraits::is_enum)
         {
@@ -97,7 +110,8 @@ namespace AZ
             return context.Report(Tasks::RetrieveInfo, Outcomes::Unknown,
                 AZStd::string::format("Failed to retrieve rtti information for %s.", classData->m_name));
         }
-        AZ_Assert(classData->m_azRtti->GetTypeId() == typeId, "Type id mismatch during deserialization of a json file. (%s vs %s)");
+        AZ_Assert(classData->m_azRtti->GetTypeId() == typeId, "Type id mismatch during deserialization of a json file. (%s vs %s)",
+            classData->m_azRtti->GetTypeId().ToString<AZStd::string>().c_str(), typeId.ToString<AZStd::string>().c_str());
 
         void** objectPtr = reinterpret_cast<void**>(object);
         bool isNull = *objectPtr == nullptr;
@@ -512,27 +526,24 @@ namespace AZ
             if (*object)
             {
                 const AZ::Uuid& actualClassId = rtti.GetActualUuid(*object);
-                if (actualClassId != objectType)
+                const SerializeContext::ClassData* actualClassData = context.GetSerializeContext()->FindClassData(actualClassId);
+                if (!actualClassData)
                 {
-                    const SerializeContext::ClassData* actualClassData = context.GetSerializeContext()->FindClassData(actualClassId);
-                    if (!actualClassData)
-                    {
-                        status = context.Report(Tasks::RetrieveInfo, Outcomes::Unknown,
-                            AZStd::string::format("Unable to find serialization information for type %s.", actualClassId.ToString<AZStd::string>().c_str()));
-                        return ResolvePointerResult::FullyProcessed;
-                    }
+                    status = context.Report(Tasks::RetrieveInfo, Outcomes::Unknown,
+                        AZStd::string::format("Unable to find serialization information for type %s.", actualClassId.ToString<AZStd::string>().c_str()));
+                    return ResolvePointerResult::FullyProcessed;
+                }
 
-                    if (actualClassData->m_factory)
-                    {
-                        actualClassData->m_factory->Destroy(*object);
-                        *object = nullptr;
-                    }
-                    else
-                    {
-                        status = context.Report(Tasks::RetrieveInfo, Outcomes::Catastrophic,
-                            "Unable to find the factory needed to clear out the default value.");
-                        return ResolvePointerResult::FullyProcessed;
-                    }
+                if (actualClassData->m_factory)
+                {
+                    actualClassData->m_factory->Destroy(*object);
+                    *object = nullptr;
+                }
+                else
+                {
+                    status = context.Report(Tasks::RetrieveInfo, Outcomes::Catastrophic,
+                        "Unable to find the factory needed to clear out the default value.");
+                    return ResolvePointerResult::FullyProcessed;
                 }
             }
             status = ResultCode(Tasks::ReadField, Outcomes::Success);

Code/Framework/AzCore/AzCore/Serialization/Json/JsonDeserializer.h

@@ -113,5 +113,13 @@ namespace AZ
 
         //! Checks if a value is an explicit default. This means the value is an object with no members.
         static bool IsExplicitDefault(const rapidjson::Value& value);
+
+    private:
+        static JsonSerializationResult::ResultCode DeserializerDefaultCheck(
+            BaseJsonSerializer* serializer,
+            void* object,
+            const Uuid& typeId,
+            const rapidjson::Value& value,
+            JsonDeserializerContext& context);
     };
 } // namespace AZ

Code/Framework/AzCore/AzCore/Serialization/Json/JsonSerialization.h

@@ -38,6 +38,20 @@ namespace AZ
     };
     
     //! Core class to handle serialization to and from json documents.
+    //! The Json Serialization works by taking a default constructed object and then apply the information found in the JSON document
+    //! on top of that object. This allows the Json Serialization to avoid storing default values and helps guarantee that the final
+    //! object is in a valid state even if non-fatal issues are encountered.
+    //! Note on containers: Containers such as vector or map are always considered to be empty even if there's entries in the provided
+    //!     default object. During deserialization entries will be appended to any existing values. A flag is provided to automatically
+    //!     clear containers during deserialization.
+    //! Note on maps: If the key for map containers such as unordered_map can be interpret as a string the Json Serialization will use
+    //!     a JSON Object to store the data in instead of an array with key/value objects.
+    //! Note on pointers: The Json Serialization assumes that are always constructed, so a default JSON value of "{}" is interpret as
+    //!     creating a new default instance even if the default value is a null pointer. A JSON Null needs to be explicitly stored in
+    //!     the JSON Document in order to default or explicitly set a pointer to null.
+    //! Note on pointer memory: Objects created/destroyed by the Json Serialization for pointers require that the AZ_CLASS_ALLOCATOR is
+    //!     declared and the object is created using aznew or memory is allocated using azmalloc. Without these the application may
+    //!     crash if the Json Serialization tries to create or destroy an object pointed to by a pointer.
     class JsonSerialization final
     {
     public:

Code/Framework/AzCore/AzCore/Serialization/Json/MapSerializer.cpp

@@ -215,10 +215,10 @@ namespace AZ
         // Load key
         void* keyAddress = pairContainer->GetElementByIndex(address, pairElement, 0);
         AZ_Assert(keyAddress, "Element reserved for associative container, but unable to retrieve address of the key.");
-        Flags keyLoadFlags = Flags::None;
+        ContinuationFlags keyLoadFlags = ContinuationFlags::None;
         if (keyElement->m_flags & SerializeContext::ClassElement::Flags::FLG_POINTER)
         {
-            keyLoadFlags = Flags::ResolvePointer;
+            keyLoadFlags = ContinuationFlags::ResolvePointer;
             *reinterpret_cast<void**>(keyAddress) = nullptr;
         }
         JSR::ResultCode keyResult = ContinueLoading(keyAddress, keyElement->m_typeId, key, context, keyLoadFlags);
@@ -231,10 +231,10 @@ namespace AZ
         // Load value
         void* valueAddress = pairContainer->GetElementByIndex(address, pairElement, 1);
         AZ_Assert(valueAddress, "Element reserved for associative container, but unable to retrieve address of the value.");
-        Flags valueLoadFlags = Flags::None; 
+        ContinuationFlags valueLoadFlags = ContinuationFlags::None; 
         if (valueElement->m_flags & SerializeContext::ClassElement::Flags::FLG_POINTER)
         {
-            valueLoadFlags = Flags::ResolvePointer;
+            valueLoadFlags = ContinuationFlags::ResolvePointer;
             *reinterpret_cast<void**>(valueAddress) = nullptr;
         }
         JSR::ResultCode valueResult = ContinueLoading(valueAddress, valueElement->m_typeId, value, context, valueLoadFlags);

Code/Framework/AzCore/AzCore/Serialization/Json/SmartPointerSerializer.cpp

@@ -23,13 +23,6 @@ namespace AZ
     {
         namespace JSR = JsonSerializationResult;
 
-        if (IsExplicitDefault(inputValue))
-        {
-            // Do nothing if the input is an explicit default.
-            return context.Report(JSR::Tasks::ReadField, JSR::Outcomes::DefaultsUsed,
-                "Default value for smart pointer requested so no change was made.");
-        }
-
         const SerializeContext::ClassData* containerClass = context.GetSerializeContext()->FindClassData(outputValueTypeId);
         if (!containerClass)
         {
@@ -89,7 +82,7 @@ namespace AZ
                 {
                     // If the target type is the same as the type already stored in the smart pointer than no new
                     // instance is created and the existing instance will be updated with the data in the json document.
-                    result = ContinueLoading(instance, elementClassId, inputValue, context, Flags::ResolvePointer);
+                    result = ContinueLoading(instance, elementClassId, inputValue, context, ContinuationFlags::ResolvePointer);
                     return false;
                 }
             }
@@ -100,7 +93,7 @@ namespace AZ
             // the wrong address. In these cases explicitly reset the smart pointer. This will erase the existing
             // data but that's fine as it's not being used.
             void* element = nullptr;
-            result = ContinueLoading(&element, elementClassId, inputValue, context, Flags::ResolvePointer);
+            result = ContinueLoading(&element, elementClassId, inputValue, context, ContinuationFlags::ResolvePointer);
             if (result.GetProcessing() != JSR::Processing::Halted && result.GetProcessing() != JSR::Processing::Altered)
             {
                 void* elementPtr = container->ReserveElement(instance, nullptr);
@@ -153,8 +146,7 @@ namespace AZ
 
         if (defaultValue)
         {
-            bool typesMatch = false;
-            auto defaultInputCallback = [&defaultValue, &inputPtrType, &typesMatch]
+            auto defaultInputCallback = [&defaultValue]
                 (void* elementPtr, const Uuid&, const SerializeContext::ClassData*, const SerializeContext::ClassElement*)
                 {
                     defaultValue = elementPtr;
@@ -163,13 +155,14 @@ namespace AZ
             container->EnumElements(const_cast<void*>(defaultValue), defaultInputCallback);
         }
 
-        JSR::ResultCode result = ContinueStoring(outputValue, inputValue, defaultValue, inputPtrType, context, Flags::ResolvePointer);
-        if (result.GetOutcome() == JSR::Outcomes::DefaultsUsed)
-        {
-            outputValue = GetExplicitDefault();
-            return context.Report(result, "Smart pointer used all defaults.");
-        }
+        JSR::ResultCode result =
+            ContinueStoring(outputValue, inputValue, defaultValue, inputPtrType, context, ContinuationFlags::ResolvePointer);
         return context.Report(result, result.GetProcessing() != JSR::Processing::Halted ?
             "Successfully processed smart pointer." : "A problem occurred while processing a smart pointer.");
     }
+
+    BaseJsonSerializer::OperationFlags JsonSmartPointerSerializer::GetOperationsFlags() const
+    {
+        return OperationFlags::ManualDefault;
+    }
 } // namespace AZ

Code/Framework/AzCore/AzCore/Serialization/Json/SmartPointerSerializer.h

@@ -28,5 +28,7 @@ namespace AZ
             JsonDeserializerContext& context) override;
         JsonSerializationResult::Result Store(rapidjson::Value& outputValue, const void* inputValue, const void* defaultValue,
             const Uuid& valueTypeId, JsonSerializerContext& context) override;
+
+        OperationFlags GetOperationsFlags() const override;
     };
 } // namespace AZ

Code/Framework/AzCore/AzCore/Serialization/Json/TupleSerializer.cpp

@@ -99,8 +99,9 @@ namespace AZ
 
             ScopedContextPath subPath(context, i);
 
-            Flags flags = classElements[i]->m_flags & SerializeContext::ClassElement::Flags::FLG_POINTER ?
-                Flags::ResolvePointer : Flags::None;
+            ContinuationFlags flags = classElements[i]->m_flags & SerializeContext::ClassElement::Flags::FLG_POINTER
+                ? ContinuationFlags::ResolvePointer
+                : ContinuationFlags::None;
 
             JSR::ResultCode result = ContinueStoring(elementValues[i], elementAddress, defaultElementAddress,
                 classElements[i]->m_typeId, context, flags);
@@ -179,8 +180,9 @@ namespace AZ
             void* elementAddress = container->GetElementByIndex(outputValue, nullptr, i);
             AZ_Assert(elementAddress, "Address of AZStd::pair or AZStd::tuple element %zu could not be retrieved.", i);
 
-            Flags flags = classElements[i]->m_flags & SerializeContext::ClassElement::Flags::FLG_POINTER ?
-                Flags::ResolvePointer : Flags::None;
+            ContinuationFlags flags = classElements[i]->m_flags & SerializeContext::ClassElement::Flags::FLG_POINTER
+                ? ContinuationFlags::ResolvePointer
+                : ContinuationFlags::None;
 
             while (arrayIndex < inputValue.Size())
             {

Code/Framework/AzCore/AzCore/Serialization/SerializeContext.h

@@ -14,8 +14,6 @@
 
 #include <limits>
 
-#include <AzCore/Asset/AssetCommon.h>
-
 #include <AzCore/Memory/OSAllocator.h>
 #include <AzCore/Memory/SystemAllocator.h>
 

Code/Framework/AzCore/AzCore/UnitTest/MockComponentApplication.h

@@ -33,6 +33,10 @@ namespace UnitTest
         MOCK_METHOD1(UnregisterComponentDescriptor, void (const AZ::ComponentDescriptor*));
         MOCK_METHOD1(RegisterEntityAddedEventHandler, void(AZ::EntityAddedEvent::Handler&));
         MOCK_METHOD1(RegisterEntityRemovedEventHandler, void(AZ::EntityRemovedEvent::Handler&));
+        MOCK_METHOD1(RegisterEntityActivatedEventHandler, void(AZ::EntityActivatedEvent::Handler&));
+        MOCK_METHOD1(RegisterEntityDeactivatedEventHandler, void(AZ::EntityDeactivatedEvent::Handler&));
+        MOCK_METHOD1(SignalEntityActivated, void(AZ::Entity*));
+        MOCK_METHOD1(SignalEntityDeactivated, void(AZ::Entity*));
         MOCK_METHOD1(RemoveEntity, bool (AZ::Entity*));
         MOCK_METHOD1(DeleteEntity, bool (const AZ::EntityId&));
         MOCK_METHOD1(GetEntityName, AZStd::string (const AZ::EntityId&));

Code/Framework/AzCore/AzCore/Utils/Utils.cpp

@@ -169,5 +169,10 @@ namespace AZ::Utils
     template AZ::Outcome<AZStd::vector<int8_t>, AZStd::string> ReadFile(AZStd::string_view filePath, size_t maxFileSize);
     template AZ::Outcome<AZStd::vector<uint8_t>, AZStd::string> ReadFile(AZStd::string_view filePath, size_t maxFileSize);
 
-
+    AZ::IO::FixedMaxPathString GetO3deManifestDirectory()
+    {
+        AZ::IO::FixedMaxPath path = GetHomeDirectory();
+        path /= ".o3de";
+        return path.Native();
+    }
 }

Code/Framework/AzCore/AzCore/Utils/Utils.h

@@ -88,6 +88,9 @@ namespace AZ
         //! Retrieves the project name from the settings registry
         AZ::SettingsRegistryInterface::FixedValueString GetProjectName();
 
+        //! Retrieves the full directory to the Home directory, i.e. "<userhome> or overrideHomeDirectory"
+        AZ::IO::FixedMaxPathString GetHomeDirectory();
+
         //! Retrieves the full directory to the O3DE manifest directory, i.e. "<userhome>/.o3de"
         AZ::IO::FixedMaxPathString GetO3deManifestDirectory();
 

Code/Framework/AzCore/AzCore/azcore_files.cmake

@@ -290,6 +290,8 @@ set(FILES
     Math/MathScriptHelpers.h
     Math/MathUtils.cpp
     Math/MathUtils.h
+    Math/MathMatrixSerializer.h
+    Math/MathMatrixSerializer.cpp
     Math/MathVectorSerializer.h
     Math/MathVectorSerializer.cpp
     Math/Matrix3x3.cpp

Code/Framework/AzCore/AzCore/std/azstd_files.cmake

@@ -31,6 +31,7 @@ set(FILES
     iterator.h
     limits.h
     numeric.h
+    math.h
     optional.h
     ratio.h
     reference_wrapper.h

Code/Framework/AzCore/AzCore/std/math.h

@@ -1,26 +1,31 @@
-/*
- * All or portions of this file Copyright (c) Amazon.com, Inc. or its affiliates or
- * its licensors.
- *
- * For complete copyright and license terms please see the LICENSE at the root of this
- * distribution (the "License"). All use of this software is governed by the License,
- * or, if provided, by the license below or the license accompanying this file. Do not
- * remove or modify any license notices. This file is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *
- */
-#pragma once
-
-#include <AzCore/RTTI/RTTI.h>
-
-namespace AzFramework
-{
-    class AtomActiveInterface
-    {
-    public:
-        AZ_RTTI(AtomActiveInterface, "{4BB59C86-0848-485D-AB28-700540470B2B}");
-
-        AtomActiveInterface() = default;
-        virtual ~AtomActiveInterface() = default;
-    };
-} // namespace AzFramework
+/*
+ * All or portions of this file Copyright (c) Amazon.com, Inc. or its affiliates or
+ * its licensors.
+ *
+ * For complete copyright and license terms please see the LICENSE at the root of this
+ * distribution (the "License"). All use of this software is governed by the License,
+ * or, if provided, by the license below or the license accompanying this file. Do not
+ * remove or modify any license notices. This file is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *
+ */
+
+#pragma once
+
+#include <cmath>
+
+namespace AZStd
+{
+    using std::abs;
+    using std::acos;
+    using std::asin;
+    using std::atan;
+    using std::atan2;
+    using std::cos;
+    using std::exp2;
+    using std::fmod;
+    using std::round;
+    using std::sin;
+    using std::sqrt;
+    using std::tan;
+} // namespace AZStd

Code/Framework/AzCore/Platform/Common/Unimplemented/AzCore/Utils/Utils_Unimplemented.cpp

@@ -14,7 +14,7 @@
 
 namespace AZ::Utils
 {
-    AZ::IO::FixedMaxPathString GetO3deManifestDirectory()
+    AZ::IO::FixedMaxPathString GetHomeDirectory()
     {
         return {};
     }

Code/Framework/AzCore/Platform/Common/UnixLike/AzCore/Utils/Utils_UnixLike.cpp

@@ -25,8 +25,19 @@ namespace AZ
 
         void NativeErrorMessageBox(const char*, const char*) {}
 
-        AZ::IO::FixedMaxPathString GetO3deManifestDirectory()
+        AZ::IO::FixedMaxPathString GetHomeDirectory()
         {
+            constexpr AZStd::string_view overrideHomeDirKey = "/Amazon/Settings/override_home_dir";
+            AZ::IO::FixedMaxPathString overrideHomeDir;
+            if (auto settingsRegistry = AZ::SettingsRegistry::Get(); settingsRegistry != nullptr)
+            {
+                if (settingsRegistry->Get(overrideHomeDir, overrideHomeDirKey))
+                {
+                    AZ::IO::FixedMaxPath path{overrideHomeDir};
+                    return path.Native();
+                }
+            }
+
             if (const char* homePath = std::getenv("HOME"); homePath != nullptr)
             {
                 AZ::IO::FixedMaxPath path{homePath};

Code/Framework/AzCore/Platform/Windows/AzCore/Utils/Utils_Windows.cpp

@@ -22,15 +22,25 @@ namespace AZ::Utils
         ::MessageBox(0, message, title, MB_OK | MB_ICONERROR);
     }
 
-    AZ::IO::FixedMaxPathString GetO3deManifestDirectory()
+    AZ::IO::FixedMaxPathString GetHomeDirectory()
     {
+        constexpr AZStd::string_view overrideHomeDirKey = "/Amazon/Settings/override_home_dir";
+        AZ::IO::FixedMaxPathString overrideHomeDir;
+        if (auto settingsRegistry = AZ::SettingsRegistry::Get(); settingsRegistry != nullptr)
+        {
+            if (settingsRegistry->Get(overrideHomeDir, overrideHomeDirKey))
+            {
+                AZ::IO::FixedMaxPath path{overrideHomeDir};
+                return path.Native();
+            }
+        }
+
         char userProfileBuffer[AZ::IO::MaxPathLength]{};
         size_t variableSize = 0;
         auto err = getenv_s(&variableSize, userProfileBuffer, AZ::IO::MaxPathLength, "USERPROFILE");
         if (!err)
         {
             AZ::IO::FixedMaxPath path{ userProfileBuffer };
-            path /= ".o3de";
             return path.Native();
         }
 

Code/Framework/AzCore/Tests/Asset/AssetManagerStreamingTests.cpp

@@ -330,4 +330,163 @@ namespace UnitTest
         }
     }
 
-}
+    // The AssetManagerStreamerImmediateCompletionTests class adjusts the asset loading to force it to complete immediately,
+    // while still within the callstack for GetAsset().  This can be used to test various conditions in which the load thread
+    // completes more rapidly than expected, and can expose subtle race conditions.
+    // There are a few key things that this class does to make this work:
+    // - The file I/O streamer is mocked
+    // - The asset stream data is mocked to a 0-byte length for the asset so that the stream load will bypass the I/O streamer and
+    //   just immediately return completion.
+    // - The number of JobManager threads is set to 0, forcing jobs to execute synchronously inline when they are started.
+    // With these changes, GetAssetInternal() will queue the stream, which will immediately call the callback that creates LoadAssetJob,
+    // which immediately executes in-place to process the asset due to the synchronous JobManager.
+    // Note that if we just created the asset in a Ready state, most of the asset loading code is completely bypassed, and so we
+    // wouldn't be able to test for race conditions in the AssetContainer.
+    // 
+    // This class also unregisters the catalog and asset handler before shutting down the asset manager.  This is done to catch
+    // any outstanding asset references that exist due to loads not completing and cleaning up successfully.
+    struct AssetManagerStreamerImmediateCompletionTests : public BaseAssetManagerTest,
+                                                          public AZ::Data::AssetCatalogRequestBus::Handler,
+                                                          public AZ::Data::AssetHandler,
+                                                          public AZ::Data::AssetCatalog
+    {
+        static inline const AZ::Uuid TestAssetId{"{E970B177-5F45-44EB-A2C4-9F29D9A0B2A2}"};
+        static inline constexpr AZStd::string_view TestAssetPath = "test";
+
+        void SetUp() override
+        {
+            BaseAssetManagerTest::SetUp();
+            AssetManager::Descriptor desc;
+            AssetManager::Create(desc);
+
+            // Register the handler and catalog after creation, because we intend to destroy them before AssetManager destruction.
+            // The specific asset we load is irrelevant, so register EmptyAsset.
+            AZ::Data::AssetManager::Instance().RegisterHandler(this, AZ::AzTypeInfo<EmptyAsset>::Uuid());
+            AZ::Data::AssetManager::Instance().RegisterCatalog(this, AZ::AzTypeInfo<EmptyAsset>::Uuid());
+
+            // Intercept messages for finding assets by name so that we can mock out the asset we're loading.
+            AZ::Data::AssetCatalogRequestBus::Handler::BusConnect();
+        }
+
+        void TearDown() override
+        {
+            // Unregister before destroying AssetManager.
+            // This will catch any assets that got stuck in a loading state without getting cleaned up.
+            AZ::Data::AssetManager::Instance().UnregisterCatalog(this);
+            AZ::Data::AssetManager::Instance().UnregisterHandler(this);
+
+            AZ::Data::AssetCatalogRequestBus::Handler::BusDisconnect();
+
+            AssetManager::Destroy();
+            BaseAssetManagerTest::TearDown();
+        }
+
+        size_t GetNumJobManagerThreads() const override
+        {
+            // Return 0 threads so that the Job Manager executes jobs synchronously inline.  This lets us finish a load while still
+            // in the callstack that initiates the load.
+            return 0;
+        }
+
+        // Create a mock streamer instead of a real one, since we don't really want to load an asset.
+        IO::IStreamer* CreateStreamer() override
+        {
+            m_mockStreamer = AZStd::make_unique<StreamerWrapper>();
+            return &(m_mockStreamer->m_mockStreamer);
+        }
+
+        void DestroyStreamer([[maybe_unused]] IO::IStreamer* streamer) override
+        {
+            m_mockStreamer = nullptr;
+        }
+
+        // AssetHandler implementation
+
+        // Minimalist mock to create a new EmptyAsset with the desired asset ID.
+        AZ::Data::AssetPtr CreateAsset(const AZ::Data::AssetId& id, [[maybe_unused]] const AZ::Data::AssetType& type) override
+        {
+            return new EmptyAsset(id);
+        }
+
+        void DestroyAsset(AZ::Data::AssetPtr ptr) override
+        {
+            delete ptr;
+        }
+
+        // The mocked-out Asset Catalog handles EmptyAsset types.
+        void GetHandledAssetTypes(AZStd::vector<AZ::Data::AssetType>& assetTypes) override
+        {
+            assetTypes.push_back(AZ::AzTypeInfo<EmptyAsset>::Uuid());
+        }
+
+        // This is a mocked-out load, so just immediately return completion without doing anything.
+        AZ::Data::AssetHandler::LoadResult LoadAssetData(
+            [[maybe_unused]] const AZ::Data::Asset<AZ::Data::AssetData>& asset,
+            [[maybe_unused]] AZStd::shared_ptr<AZ::Data::AssetDataStream> stream,
+            [[maybe_unused]] const AZ::Data::AssetFilterCB& assetLoadFilterCB)
+        {
+            return AZ::Data::AssetHandler::LoadResult::LoadComplete;
+        }
+
+        // AssetCatalogRequestBus implementation
+        
+        // Minimalist mocks to provide our desired asset path or asset id
+        AZStd::string GetAssetPathById([[maybe_unused]] const AZ::Data::AssetId& id) override
+        {
+            return TestAssetPath;
+        }
+        AZ::Data::AssetId GetAssetIdByPath(
+            [[maybe_unused]] const char* path, [[maybe_unused]] const AZ::Data::AssetType& typeToRegister,
+            [[maybe_unused]] bool autoRegisterIfNotFound) override
+        {
+            return TestAssetId;
+        }
+
+        // Return the mocked-out information for our test asset
+        AZ::Data::AssetInfo GetAssetInfoById([[maybe_unused]] const AZ::Data::AssetId& id) override
+        {
+            AZ::Data::AssetInfo assetInfo;
+            assetInfo.m_assetId = TestAssetId;
+            assetInfo.m_assetType = AZ::AzTypeInfo<EmptyAsset>::Uuid();
+            assetInfo.m_relativePath = TestAssetPath;
+            return assetInfo;
+        }
+
+        // AssetCatalog implementation
+        
+        // Set the mocked-out asset load to have a 0-byte length so that the load skips I/O and immediately returns success
+        AZ::Data::AssetStreamInfo GetStreamInfoForLoad(
+            [[maybe_unused]] const AZ::Data::AssetId& id, const AZ::Data::AssetType& type) override
+        {
+            EXPECT_TRUE(type == AZ::AzTypeInfo<EmptyAsset>::Uuid());
+            AZ::Data::AssetStreamInfo info;
+            info.m_dataOffset = 0;
+            info.m_streamName = TestAssetPath;
+            info.m_dataLen = 0;
+            info.m_streamFlags = AZ::IO::OpenMode::ModeRead;
+
+            return info;
+        }
+
+        AZStd::unique_ptr<StreamerWrapper> m_mockStreamer;
+    };
+
+    // This test will verify that even if the asset loading stream/job returns immediately, all of the loading
+    // code works successfully.  The test here is fairly simple - it just loads the asset and verifies that it
+    // loaded successfully.  The bulk of the test is really in the setup class above, where the load is forced
+    // to complete immediately.  Also, the true failure condition is caught in the setup class too, which is
+    // the presence of any assets at the point that the asset handler is unregistered.  If they're present, then
+    // the immediate load wasn't truly successful, as it left around extra references to the asset that haven't
+    // been cleaned up.
+    TEST_F(AssetManagerStreamerImmediateCompletionTests, LoadAssetWithImmediateJobCompletion_WorksSuccessfully)
+    {
+        AZ::Data::AssetLoadParameters loadParams;
+
+        auto testAsset =
+            AssetManager::Instance().GetAsset<EmptyAsset>(TestAssetId, AZ::Data::AssetLoadBehavior::Default, loadParams);
+
+        AZ::Data::AssetManager::Instance().DispatchEvents();
+        EXPECT_TRUE(testAsset.IsReady());
+    }
+
+} // namespace UnitTest

Code/Framework/AzCore/Tests/Asset/TestAssetTypes.h

@@ -24,6 +24,13 @@ namespace UnitTest
     public:
         AZ_CLASS_ALLOCATOR(EmptyAsset, AZ::SystemAllocator, 0);
         AZ_RTTI(EmptyAsset, "{098E3F7F-13AC-414B-9B4E-49B5AD1BD7FE}", AZ::Data::AssetData);
+
+        EmptyAsset(
+            const AZ::Data::AssetId& assetId = AZ::Data::AssetId(),
+            AZ::Data::AssetData::AssetStatus status = AZ::Data::AssetData::AssetStatus::NotLoaded)
+            : AZ::Data::AssetData(assetId, status)
+        {
+        }
     };
 
     // EmptyAssetWithNoHandler:  no data contained within, and no AssetHandler registered for this type

Code/Framework/AzCore/Tests/AssetJsonSerializerTests.cpp

@@ -104,6 +104,11 @@ namespace JsonSerializationTests
             AZ::AllocatorInstance<AZ::PoolAllocator>::Destroy();
         }
 
+        void Reflect(AZStd::unique_ptr<AZ::SerializeContext>& context) override
+        {
+            context->RegisterGenericType<Asset>();
+        }
+
         AZStd::shared_ptr<AZ::BaseJsonSerializer> CreateSerializer() override
         {
             return AZStd::make_shared<AZ::Data::AssetJsonSerializer>();
@@ -130,6 +135,7 @@ namespace JsonSerializationTests
             auto instance = AZStd::make_shared<Asset>();
             instance->Create(id, false);
             instance->SetHint("TestFile");
+            instance->SetAutoLoadBehavior(AZ::Data::AssetLoadBehavior::PreLoad);
             return instance;
         }
 
@@ -153,6 +159,7 @@ namespace JsonSerializationTests
                         "guid": "{BBEAC89F-8BAD-4A9D-BF6E-D0DF84A8DFD6}",
                         "subId": 1
                     },
+                    "loadBehavior": "PreLoad",
                     "assetHint": "TestFile"
                 })";
         }

Code/Framework/AzCore/Tests/BehaviorContextFixture.h

@@ -49,9 +49,13 @@ namespace UnitTest
         // ComponentApplicationBus
         AZ::ComponentApplication* GetApplication() override { return nullptr; }
         void RegisterComponentDescriptor(const AZ::ComponentDescriptor*) override {}
+        void UnregisterComponentDescriptor(const AZ::ComponentDescriptor*) override {}
         void RegisterEntityAddedEventHandler(AZ::EntityAddedEvent::Handler&) override {}
         void RegisterEntityRemovedEventHandler(AZ::EntityRemovedEvent::Handler&) override {}
-        void UnregisterComponentDescriptor(const AZ::ComponentDescriptor*) override {}
+        void RegisterEntityActivatedEventHandler(AZ::EntityActivatedEvent::Handler&) override {}
+        void RegisterEntityDeactivatedEventHandler(AZ::EntityDeactivatedEvent::Handler&) override {}
+        void SignalEntityActivated(AZ::Entity*) override {}
+        void SignalEntityDeactivated(AZ::Entity*) override {}
         bool AddEntity(AZ::Entity*) override { return true; }
         bool RemoveEntity(AZ::Entity*) override { return true; }
         bool DeleteEntity(const AZ::EntityId&) override { return true; }

Code/Framework/AzCore/Tests/Math/Matrix3x3Tests.cpp

@@ -14,6 +14,7 @@
 #include <AzCore/Math/Transform.h>
 #include <AzCore/Math/Quaternion.h>
 #include <AzCore/UnitTest/TestTypes.h>
+#include <AZTestShared/Math/MathTestHelpers.h>
 
 using namespace AZ;
 
@@ -251,19 +252,19 @@ namespace UnitTest
         m2.SetRow(2, 13.0f, 14.0f, 15.0f);
 
         Matrix3x3 m3 = m1 * m2;
-        AZ_TEST_ASSERT(m3.GetRow(0).IsClose(Vector3(66.0f, 72.0f, 78.0f)));
-        AZ_TEST_ASSERT(m3.GetRow(1).IsClose(Vector3(156.0f, 171.0f, 186.0f)));
-        AZ_TEST_ASSERT(m3.GetRow(2).IsClose(Vector3(246.0f, 270.0f, 294.0f)));
+        EXPECT_THAT(m3.GetRow(0), IsClose(Vector3(66.0f, 72.0f, 78.0f)));
+        EXPECT_THAT(m3.GetRow(1), IsClose(Vector3(156.0f, 171.0f, 186.0f)));
+        EXPECT_THAT(m3.GetRow(2), IsClose(Vector3(246.0f, 270.0f, 294.0f)));
 
         Matrix3x3 m4 = m1;
         m4 *= m2;
-        AZ_TEST_ASSERT(m4.GetRow(0).IsClose(Vector3(66.0f, 72.0f, 78.0f)));
-        AZ_TEST_ASSERT(m4.GetRow(1).IsClose(Vector3(156.0f, 171.0f, 186.0f)));
-        AZ_TEST_ASSERT(m4.GetRow(2).IsClose(Vector3(246.0f, 270.0f, 294.0f)));
+        EXPECT_THAT(m4.GetRow(0), IsClose(Vector3(66.0f, 72.0f, 78.0f)));
+        EXPECT_THAT(m4.GetRow(1), IsClose(Vector3(156.0f, 171.0f, 186.0f)));
+        EXPECT_THAT(m4.GetRow(2), IsClose(Vector3(246.0f, 270.0f, 294.0f)));
         m3 = m1.TransposedMultiply(m2);
-        AZ_TEST_ASSERT(m3.GetRow(0).IsClose(Vector3(138.0f, 150.0f, 162.0f)));
-        AZ_TEST_ASSERT(m3.GetRow(1).IsClose(Vector3(168.0f, 183.0f, 198.0f)));
-        AZ_TEST_ASSERT(m3.GetRow(2).IsClose(Vector3(198.0f, 216.0f, 234.0f)));
+        EXPECT_THAT(m3.GetRow(0), IsClose(Vector3(138.0f, 150.0f, 162.0f)));
+        EXPECT_THAT(m3.GetRow(1), IsClose(Vector3(168.0f, 183.0f, 198.0f)));
+        EXPECT_THAT(m3.GetRow(2), IsClose(Vector3(198.0f, 216.0f, 234.0f)));
     }
 
     TEST(MATH_Matrix3x3, TestVectorMultiplication)
@@ -277,11 +278,11 @@ namespace UnitTest
         m2.SetRow(1, 10.0f, 11.0f, 12.0f);
         m2.SetRow(2, 13.0f, 14.0f, 15.0f);
 
-        AZ_TEST_ASSERT((m1 * Vector3(1.0f, 2.0f, 3.0f)).IsClose(Vector3(14.0f, 32.0f, 50.0f)));
+        EXPECT_THAT((m1 * Vector3(1.0f, 2.0f, 3.0f)), IsClose(Vector3(14.0f, 32.0f, 50.0f)));
         Vector3 v1(1.0f, 2.0f, 3.0f);
-        AZ_TEST_ASSERT((v1 * m1).IsClose(Vector3(30.0f, 36.0f, 42.0f)));
+        EXPECT_THAT((v1 * m1), IsClose(Vector3(30.0f, 36.0f, 42.0f)));
         v1 *= m1;
-        AZ_TEST_ASSERT(v1.IsClose(Vector3(30.0f, 36.0f, 42.0f)));
+        EXPECT_THAT(v1, IsClose(Vector3(30.0f, 36.0f, 42.0f)));
     }
 
     TEST(MATH_Matrix3x3, TestSum)
@@ -296,15 +297,15 @@ namespace UnitTest
         m2.SetRow(2, 13.0f, 14.0f, 15.0f);
 
         Matrix3x3 m3 = m1 + m2;
-        AZ_TEST_ASSERT(m3.GetRow(0).IsClose(Vector3(8.0f, 10.0f, 12.0f)));
-        AZ_TEST_ASSERT(m3.GetRow(1).IsClose(Vector3(14.0f, 16.0f, 18.0f)));
-        AZ_TEST_ASSERT(m3.GetRow(2).IsClose(Vector3(20.0f, 22.0f, 24.0f)));
+        EXPECT_THAT(m3.GetRow(0), IsClose(Vector3(8.0f, 10.0f, 12.0f)));
+        EXPECT_THAT(m3.GetRow(1), IsClose(Vector3(14.0f, 16.0f, 18.0f)));
+        EXPECT_THAT(m3.GetRow(2), IsClose(Vector3(20.0f, 22.0f, 24.0f)));
 
         m3 = m1;
         m3 += m2;
-        AZ_TEST_ASSERT(m3.GetRow(0).IsClose(Vector3(8.0f, 10.0f, 12.0f)));
-        AZ_TEST_ASSERT(m3.GetRow(1).IsClose(Vector3(14.0f, 16.0f, 18.0f)));
-        AZ_TEST_ASSERT(m3.GetRow(2).IsClose(Vector3(20.0f, 22.0f, 24.0f)));
+        EXPECT_THAT(m3.GetRow(0), IsClose(Vector3(8.0f, 10.0f, 12.0f)));
+        EXPECT_THAT(m3.GetRow(1), IsClose(Vector3(14.0f, 16.0f, 18.0f)));
+        EXPECT_THAT(m3.GetRow(2), IsClose(Vector3(20.0f, 22.0f, 24.0f)));
     }
 
     TEST(MATH_Matrix3x3, TestDifference)
@@ -319,14 +320,14 @@ namespace UnitTest
         m2.SetRow(2, 13.0f, 14.0f, 15.0f);
 
         Matrix3x3 m3 = m1 - m2;
-        AZ_TEST_ASSERT(m3.GetRow(0).IsClose(Vector3(-6.0f, -6.0f, -6.0f)));
-        AZ_TEST_ASSERT(m3.GetRow(1).IsClose(Vector3(-6.0f, -6.0f, -6.0f)));
-        AZ_TEST_ASSERT(m3.GetRow(2).IsClose(Vector3(-6.0f, -6.0f, -6.0f)));
+        EXPECT_THAT(m3.GetRow(0), IsClose(Vector3(-6.0f, -6.0f, -6.0f)));
+        EXPECT_THAT(m3.GetRow(1), IsClose(Vector3(-6.0f, -6.0f, -6.0f)));
+        EXPECT_THAT(m3.GetRow(2), IsClose(Vector3(-6.0f, -6.0f, -6.0f)));
         m3 = m1;
         m3 -= m2;
-        AZ_TEST_ASSERT(m3.GetRow(0).IsClose(Vector3(-6.0f, -6.0f, -6.0f)));
-        AZ_TEST_ASSERT(m3.GetRow(1).IsClose(Vector3(-6.0f, -6.0f, -6.0f)));
-        AZ_TEST_ASSERT(m3.GetRow(2).IsClose(Vector3(-6.0f, -6.0f, -6.0f)));
+        EXPECT_THAT(m3.GetRow(0), IsClose(Vector3(-6.0f, -6.0f, -6.0f)));
+        EXPECT_THAT(m3.GetRow(1), IsClose(Vector3(-6.0f, -6.0f, -6.0f)));
+        EXPECT_THAT(m3.GetRow(2), IsClose(Vector3(-6.0f, -6.0f, -6.0f)));
     }
 
     TEST(MATH_Matrix3x3, TestScalarMultiplication)
@@ -341,18 +342,18 @@ namespace UnitTest
         m2.SetRow(2, 13.0f, 14.0f, 15.0f);
 
         Matrix3x3 m3 = m1 * 2.0f;
-        AZ_TEST_ASSERT(m3.GetRow(0).IsClose(Vector3(2.0f, 4.0f, 6.0f)));
-        AZ_TEST_ASSERT(m3.GetRow(1).IsClose(Vector3(8.0f, 10.0f, 12.0f)));
-        AZ_TEST_ASSERT(m3.GetRow(2).IsClose(Vector3(14.0f, 16.0f, 18.0f)));
+        EXPECT_THAT(m3.GetRow(0), IsClose(Vector3(2.0f, 4.0f, 6.0f)));
+        EXPECT_THAT(m3.GetRow(1), IsClose(Vector3(8.0f, 10.0f, 12.0f)));
+        EXPECT_THAT(m3.GetRow(2), IsClose(Vector3(14.0f, 16.0f, 18.0f)));
         m3 = m1;
         m3 *= 2.0f;
-        AZ_TEST_ASSERT(m3.GetRow(0).IsClose(Vector3(2.0f, 4.0f, 6.0f)));
-        AZ_TEST_ASSERT(m3.GetRow(1).IsClose(Vector3(8.0f, 10.0f, 12.0f)));
-        AZ_TEST_ASSERT(m3.GetRow(2).IsClose(Vector3(14.0f, 16.0f, 18.0f)));
+        EXPECT_THAT(m3.GetRow(0), IsClose(Vector3(2.0f, 4.0f, 6.0f)));
+        EXPECT_THAT(m3.GetRow(1), IsClose(Vector3(8.0f, 10.0f, 12.0f)));
+        EXPECT_THAT(m3.GetRow(2), IsClose(Vector3(14.0f, 16.0f, 18.0f)));
         m3 = 2.0f * m1;
-        AZ_TEST_ASSERT(m3.GetRow(0).IsClose(Vector3(2.0f, 4.0f, 6.0f)));
-        AZ_TEST_ASSERT(m3.GetRow(1).IsClose(Vector3(8.0f, 10.0f, 12.0f)));
-        AZ_TEST_ASSERT(m3.GetRow(2).IsClose(Vector3(14.0f, 16.0f, 18.0f)));
+        EXPECT_THAT(m3.GetRow(0), IsClose(Vector3(2.0f, 4.0f, 6.0f)));
+        EXPECT_THAT(m3.GetRow(1), IsClose(Vector3(8.0f, 10.0f, 12.0f)));
+        EXPECT_THAT(m3.GetRow(2), IsClose(Vector3(14.0f, 16.0f, 18.0f)));
     }
 
     TEST(MATH_Matrix3x3, TestScalarDivision)
@@ -367,18 +368,32 @@ namespace UnitTest
         m2.SetRow(2, 13.0f, 14.0f, 15.0f);
 
         Matrix3x3 m3 = m1 / 0.5f;
-        AZ_TEST_ASSERT(m3.GetRow(0).IsClose(Vector3(2.0f, 4.0f, 6.0f)));
-        AZ_TEST_ASSERT(m3.GetRow(1).IsClose(Vector3(8.0f, 10.0f, 12.0f)));
-        AZ_TEST_ASSERT(m3.GetRow(2).IsClose(Vector3(14.0f, 16.0f, 18.0f)));
+        EXPECT_THAT(m3.GetRow(0), IsClose(Vector3(2.0f, 4.0f, 6.0f)));
+        EXPECT_THAT(m3.GetRow(1), IsClose(Vector3(8.0f, 10.0f, 12.0f)));
+        EXPECT_THAT(m3.GetRow(2), IsClose(Vector3(14.0f, 16.0f, 18.0f)));
         m3 = m1;
         m3 /= 0.5f;
-        AZ_TEST_ASSERT(m3.GetRow(0).IsClose(Vector3(2.0f, 4.0f, 6.0f)));
-        AZ_TEST_ASSERT(m3.GetRow(1).IsClose(Vector3(8.0f, 10.0f, 12.0f)));
-        AZ_TEST_ASSERT(m3.GetRow(2).IsClose(Vector3(14.0f, 16.0f, 18.0f)));
-        m3 = -m1;
-        AZ_TEST_ASSERT(m3.GetRow(0).IsClose(Vector3(-1.0f, -2.0f, -3.0f)));
-        AZ_TEST_ASSERT(m3.GetRow(1).IsClose(Vector3(-4.0f, -5.0f, -6.0f)));
-        AZ_TEST_ASSERT(m3.GetRow(2).IsClose(Vector3(-7.0f, -8.0f, -9.0f)));
+        EXPECT_THAT(m3.GetRow(0), IsClose(Vector3(2.0f, 4.0f, 6.0f)));
+        EXPECT_THAT(m3.GetRow(1), IsClose(Vector3(8.0f, 10.0f, 12.0f)));
+        EXPECT_THAT(m3.GetRow(2), IsClose(Vector3(14.0f, 16.0f, 18.0f)));
+    }
+
+    TEST(MATH_Matrix3x3, TestNegation)
+    {
+        Matrix3x3 m1;
+        m1.SetRow(0, 1.0f, 2.0f, 3.0f);
+        m1.SetRow(1, 4.0f, 5.0f, 6.0f);
+        m1.SetRow(2, 7.0f, 8.0f, 9.0f);
+        EXPECT_THAT(-(-m1), IsClose(m1));
+        EXPECT_THAT(-Matrix3x3::CreateZero(), IsClose(Matrix3x3::CreateZero()));
+
+        Matrix3x3 m2 = -m1;
+        EXPECT_THAT(m2.GetRow(0), IsClose(Vector3(-1.0f, -2.0f, -3.0f)));
+        EXPECT_THAT(m2.GetRow(1), IsClose(Vector3(-4.0f, -5.0f, -6.0f)));
+        EXPECT_THAT(m2.GetRow(2), IsClose(Vector3(-7.0f, -8.0f, -9.0f)));
+
+        Matrix3x3 m3 = m1 + (-m1);
+        EXPECT_THAT(m3, IsClose(Matrix3x3::CreateZero()));
     }
 
     TEST(MATH_Matrix3x3, TestTranspose)
@@ -425,11 +440,33 @@ namespace UnitTest
     TEST(MATH_Matrix3x3, TestScaleAccess)
     {
         Matrix3x3 m1 = Matrix3x3::CreateRotationX(DegToRad(40.0f)) * Matrix3x3::CreateScale(Vector3(2.0f, 3.0f, 4.0f));
-        AZ_TEST_ASSERT(m1.RetrieveScale().IsClose(Vector3(2.0f, 3.0f, 4.0f)));
-        AZ_TEST_ASSERT(m1.ExtractScale().IsClose(Vector3(2.0f, 3.0f, 4.0f)));
-        AZ_TEST_ASSERT(m1.RetrieveScale().IsClose(Vector3::CreateOne()));
+        EXPECT_THAT(m1.RetrieveScale(), IsClose(Vector3(2.0f, 3.0f, 4.0f)));
+        EXPECT_THAT(m1.ExtractScale(), IsClose(Vector3(2.0f, 3.0f, 4.0f)));
+        EXPECT_THAT(m1.RetrieveScale(), IsClose(Vector3::CreateOne()));
         m1.MultiplyByScale(Vector3(3.0f, 4.0f, 5.0f));
-        AZ_TEST_ASSERT(m1.RetrieveScale().IsClose(Vector3(3.0f, 4.0f, 5.0f)));
+        EXPECT_THAT(m1.RetrieveScale(), IsClose(Vector3(3.0f, 4.0f, 5.0f)));
+    }
+
+    TEST(MATH_Matrix3x3, TestScaleSqAccess)
+    {
+        Matrix3x3 m1 = Matrix3x3::CreateRotationX(DegToRad(40.0f)) * Matrix3x3::CreateScale(Vector3(2.0f, 3.0f, 4.0f));
+        EXPECT_THAT(m1.RetrieveScaleSq(), IsClose(Vector3(4.0f, 9.0f, 16.0f)));
+        m1.ExtractScale();
+        EXPECT_THAT(m1.RetrieveScaleSq(), IsClose(Vector3::CreateOne()));
+        m1.MultiplyByScale(Vector3(3.0f, 4.0f, 5.0f));
+        EXPECT_THAT(m1.RetrieveScaleSq(), IsClose(Vector3(9.0f, 16.0f, 25.0f)));
+    }
+
+    TEST(MATH_Matrix3x3, TestReciprocalScaled)
+    {
+        Matrix3x3 orthogonalMatrix = Matrix3x3::CreateRotationX(DegToRad(40.0f));
+        EXPECT_THAT(orthogonalMatrix.GetReciprocalScaled(), IsClose(orthogonalMatrix));
+        const AZ::Vector3 scale(2.8f, 0.7f, 1.3f);
+        AZ::Matrix3x3 scaledMatrix = orthogonalMatrix;
+        scaledMatrix.MultiplyByScale(scale);
+        AZ::Matrix3x3 reciprocalScaledMatrix = orthogonalMatrix;
+        reciprocalScaledMatrix.MultiplyByScale(scale.GetReciprocal());
+        EXPECT_THAT(scaledMatrix.GetReciprocalScaled(), IsClose(reciprocalScaledMatrix));
     }
 
     TEST(MATH_Matrix3x3, TestPolarDecomposition)

Code/Framework/AzCore/Tests/Math/Matrix3x4Tests.cpp

@@ -467,21 +467,136 @@ namespace UnitTest
         EXPECT_THAT(matrix.Multiply3x3(axisDirection), IsClose(forwardDirection));
     }
 
-    TEST(MATH_Matrix3x4, MultiplyByMatrix3x4)
+    TEST(MATH_Matrix3x4, TestMatrixMultiplication)
     {
-        const AZ::Matrix3x4 matrix1 = AZ::Matrix3x4::CreateFromValue(1.2f);
-        const AZ::Matrix3x4 matrix2 = AZ::Matrix3x4::CreateDiagonal(AZ::Vector3(1.3f, 1.5f, 0.4f));
-        const AZ::Matrix3x4 matrix3 = AZ::Matrix3x4::CreateFromQuaternionAndTranslation(
-            AZ::Quaternion(0.42f, 0.46f, -0.66f, 0.42f), AZ::Vector3(2.8f, -3.7f, 1.6f));
-        const AZ::Matrix3x4 matrix4 = AZ::Matrix3x4::CreateRotationX(-0.7f) * AZ::Matrix3x4::CreateScale(AZ::Vector3(0.6f, 1.3f, 0.7f));
-        AZ::Matrix3x4 matrix5 = matrix1;
-        matrix5 *= matrix4;
-        const AZ::Vector3 vector(1.9f, 2.3f, 0.2f);
-        EXPECT_TRUE((matrix1 * (matrix2 * matrix3)).IsClose((matrix1 * matrix2) * matrix3));
-        EXPECT_THAT((matrix3 * matrix4) * vector, IsClose(matrix3 * (matrix4 * vector)));
-        EXPECT_TRUE((matrix2 * AZ::Matrix3x4::Identity()).IsClose(matrix2));
-        EXPECT_TRUE((matrix3 * AZ::Matrix3x4::Identity()).IsClose(AZ::Matrix3x4::Identity() * matrix3));
-        EXPECT_TRUE(matrix5.IsClose(matrix1 * matrix4));
+        AZ::Matrix3x4 m1;
+        m1.SetRow(0, 1.0f, 2.0f, 3.0f, 4.0f);
+        m1.SetRow(1, 5.0f, 6.0f, 7.0f, 8.0f);
+        m1.SetRow(2, 9.0f, 10.0f, 11.0f, 12.0f);
+        AZ::Matrix3x4 m2;
+        m2.SetRow(0, 7.0f, 8.0f, 9.0f, 10.0f);
+        m2.SetRow(1, 11.0f, 12.0f, 13.0f, 14.0f);
+        m2.SetRow(2, 15.0f, 16.0f, 17.0f, 18.0f);
+        AZ::Matrix3x4 m3 = m1 * m2;
+        EXPECT_THAT(m3.GetRow(0), IsClose(AZ::Vector4(74.0f, 80.0f, 86.0f, 96.0f)));
+        EXPECT_THAT(m3.GetRow(1), IsClose(AZ::Vector4(206.0f, 224.0f, 242.0f, 268.0f)));
+        EXPECT_THAT(m3.GetRow(2), IsClose(AZ::Vector4(338.0f, 368.0f, 398.0f, 440.0f)));
+        AZ::Matrix3x4 m4 = m1;
+        m4 *= m2;
+        EXPECT_THAT(m4.GetRow(0), IsClose(AZ::Vector4(74.0f, 80.0f, 86.0f, 96.0f)));
+        EXPECT_THAT(m4.GetRow(1), IsClose(AZ::Vector4(206.0f, 224.0f, 242.0f, 268.0f)));
+        EXPECT_THAT(m4.GetRow(2), IsClose(AZ::Vector4(338.0f, 368.0f, 398.0f, 440.0f)));
+    }
+
+    TEST(MATH_Matrix3x4, TestSum)
+    {
+        AZ::Matrix3x4 m1;
+        m1.SetRow(0, 1.0f, 2.0f, 3.0f, 4.0f);
+        m1.SetRow(1, 5.0f, 6.0f, 7.0f, 8.0f);
+        m1.SetRow(2, 9.0f, 10.0f, 11.0f, 12.0f);
+        AZ::Matrix3x4 m2;
+        m2.SetRow(0, 7.0f, 8.0f, 9.0f, 10.0f);
+        m2.SetRow(1, 11.0f, 12.0f, 13.0f, 14.0f);
+        m2.SetRow(2, 15.0f, 16.0f, 17.0f, 18.0f);
+
+        AZ::Matrix3x4 m3 = m1 + m2;
+        EXPECT_THAT(m3.GetRow(0), IsClose(AZ::Vector4(8.0f, 10.0f, 12.0f, 14.0f)));
+        EXPECT_THAT(m3.GetRow(1), IsClose(AZ::Vector4(16.0f, 18.0f, 20.0f, 22.0f)));
+        EXPECT_THAT(m3.GetRow(2), IsClose(AZ::Vector4(24.0f, 26.0f, 28.0f, 30.0f)));
+
+        m3 = m1;
+        m3 += m2;
+        EXPECT_THAT(m3.GetRow(0), IsClose(AZ::Vector4(8.0f, 10.0f, 12.0f, 14.0f)));
+        EXPECT_THAT(m3.GetRow(1), IsClose(AZ::Vector4(16.0f, 18.0f, 20.0f, 22.0f)));
+        EXPECT_THAT(m3.GetRow(2), IsClose(AZ::Vector4(24.0f, 26.0f, 28.0f, 30.0f)));
+    }
+
+    TEST(MATH_Matrix3x4, TestDifference)
+    {
+        AZ::Matrix3x4 m1;
+        m1.SetRow(0, 1.0f, 2.0f, 3.0f, 4.0f);
+        m1.SetRow(1, 5.0f, 6.0f, 7.0f, 8.0f);
+        m1.SetRow(2, 9.0f, 10.0f, 11.0f, 12.0f);
+        AZ::Matrix3x4 m2;
+        m2.SetRow(0, 7.0f, 8.0f, 9.0f, 10.0f);
+        m2.SetRow(1, 11.0f, 12.0f, 13.0f, 14.0f);
+        m2.SetRow(2, 15.0f, 16.0f, 17.0f, 18.0f);
+
+        AZ::Matrix3x4 m3 = m1 - m2;
+        EXPECT_THAT(m3.GetRow(0), IsClose(AZ::Vector4(-6.0f, -6.0f, -6.0f, -6.0f)));
+        EXPECT_THAT(m3.GetRow(1), IsClose(AZ::Vector4(-6.0f, -6.0f, -6.0f, -6.0f)));
+        EXPECT_THAT(m3.GetRow(2), IsClose(AZ::Vector4(-6.0f, -6.0f, -6.0f, -6.0f)));
+        m3 = m1;
+        m3 -= m2;
+        EXPECT_THAT(m3.GetRow(0), IsClose(AZ::Vector4(-6.0f, -6.0f, -6.0f, -6.0f)));
+        EXPECT_THAT(m3.GetRow(1), IsClose(AZ::Vector4(-6.0f, -6.0f, -6.0f, -6.0f)));
+        EXPECT_THAT(m3.GetRow(2), IsClose(AZ::Vector4(-6.0f, -6.0f, -6.0f, -6.0f)));
+    }
+
+    TEST(MATH_Matrix3x4, TestScalarMultiplication)
+    {
+        AZ::Matrix3x4 m1;
+        m1.SetRow(0, 1.0f, 2.0f, 3.0f, 4.0f);
+        m1.SetRow(1, 5.0f, 6.0f, 7.0f, 8.0f);
+        m1.SetRow(2, 9.0f, 10.0f, 11.0f, 12.0f);
+        AZ::Matrix3x4 m2;
+        m2.SetRow(0, 7.0f, 8.0f, 9.0f, 10.0f);
+        m2.SetRow(1, 11.0f, 12.0f, 13.0f, 14.0f);
+        m2.SetRow(2, 15.0f, 16.0f, 17.0f, 18.0f);
+
+        AZ::Matrix3x4 m3 = m1 * 2.0f;
+        EXPECT_THAT(m3.GetRow(0), IsClose(AZ::Vector4(2.0f, 4.0f, 6.0f, 8.0f)));
+        EXPECT_THAT(m3.GetRow(1), IsClose(AZ::Vector4(10.0f, 12.0f, 14.0f, 16.0f)));
+        EXPECT_THAT(m3.GetRow(2), IsClose(AZ::Vector4(18.0f, 20.0f, 22.0f, 24.0f)));
+        m3 = m1;
+        m3 *= 2.0f;
+        EXPECT_THAT(m3.GetRow(0), IsClose(AZ::Vector4(2.0f, 4.0f, 6.0f, 8.0f)));
+        EXPECT_THAT(m3.GetRow(1), IsClose(AZ::Vector4(10.0f, 12.0f, 14.0f, 16.0f)));
+        EXPECT_THAT(m3.GetRow(2), IsClose(AZ::Vector4(18.0f, 20.0f, 22.0f, 24.0f)));
+        m3 = 2.0f * m1;
+        EXPECT_THAT(m3.GetRow(0), IsClose(AZ::Vector4(2.0f, 4.0f, 6.0f, 8.0f)));
+        EXPECT_THAT(m3.GetRow(1), IsClose(AZ::Vector4(10.0f, 12.0f, 14.0f, 16.0f)));
+        EXPECT_THAT(m3.GetRow(2), IsClose(AZ::Vector4(18.0f, 20.0f, 22.0f, 24.0f)));
+    }
+
+    TEST(MATH_Matrix3x4, TestScalarDivision)
+    {
+        AZ::Matrix3x4 m1;
+        m1.SetRow(0, 1.0f, 2.0f, 3.0f, 4.0f);
+        m1.SetRow(1, 5.0f, 6.0f, 7.0f, 8.0f);
+        m1.SetRow(2, 9.0f, 10.0f, 11.0f, 12.0f);
+        AZ::Matrix3x4 m2;
+        m2.SetRow(0, 7.0f, 8.0f, 9.0f, 10.0f);
+        m2.SetRow(1, 11.0f, 12.0f, 13.0f, 14.0f);
+        m2.SetRow(2, 15.0f, 16.0f, 17.0f, 18.0f);
+
+        AZ::Matrix3x4 m3 = m1 / 0.5f;
+        EXPECT_THAT(m3.GetRow(0), IsClose(AZ::Vector4(2.0f, 4.0f, 6.0f, 8.0f)));
+        EXPECT_THAT(m3.GetRow(1), IsClose(AZ::Vector4(10.0f, 12.0f, 14.0f, 16.0f)));
+        EXPECT_THAT(m3.GetRow(2), IsClose(AZ::Vector4(18.0f, 20.0f, 22.0f, 24.0f)));
+        m3 = m1;
+        m3 /= 0.5f;
+        EXPECT_THAT(m3.GetRow(0), IsClose(AZ::Vector4(2.0f, 4.0f, 6.0f, 8.0f)));
+        EXPECT_THAT(m3.GetRow(1), IsClose(AZ::Vector4(10.0f, 12.0f, 14.0f, 16.0f)));
+        EXPECT_THAT(m3.GetRow(2), IsClose(AZ::Vector4(18.0f, 20.0f, 22.0f, 24.0f)));
+    }
+
+    TEST(MATH_Matrix3x4, TestNegation)
+    {
+        AZ::Matrix3x4 m1;
+        m1.SetRow(0, 1.0f, 2.0f, 3.0f, 4.0f);
+        m1.SetRow(1, 5.0f, 6.0f, 7.0f, 8.0f);
+        m1.SetRow(2, 9.0f, 10.0f, 11.0f, 12.0f);
+        EXPECT_THAT(-(-m1), IsClose(m1));
+        EXPECT_THAT(-AZ::Matrix3x4::CreateZero(), IsClose(AZ::Matrix3x4::CreateZero()));
+
+        AZ::Matrix3x4 m2 = -m1;
+        EXPECT_THAT(m2.GetRow(0), IsClose(AZ::Vector4(-1.0f, -2.0f, -3.0f, -4.0f)));
+        EXPECT_THAT(m2.GetRow(1), IsClose(AZ::Vector4(-5.0f, -6.0f, -7.0f, -8.0f)));
+        EXPECT_THAT(m2.GetRow(2), IsClose(AZ::Vector4(-9.0f, -10.0f, -11.0f, -12.0f)));
+
+        AZ::Matrix3x4 m3 = m1 + (-m1);
+        EXPECT_THAT(m3, IsClose(AZ::Matrix3x4::CreateZero()));
     }
 
     TEST(MATH_Matrix3x4, MultiplyByVector3)
@@ -652,6 +767,34 @@ namespace UnitTest
         EXPECT_THAT(scaledMatrix.RetrieveScale(), IsClose(AZ::Vector3::CreateOne()));
     }
 
+    TEST_P(Matrix3x4ScaleFixture, ScaleSq)
+    {
+        const AZ::Matrix3x4 orthogonalMatrix = GetParam();
+        EXPECT_THAT(orthogonalMatrix.RetrieveScaleSq(), IsClose(AZ::Vector3::CreateOne()));
+        AZ::Matrix3x4 unscaledMatrix = orthogonalMatrix;
+        unscaledMatrix.ExtractScale();
+        EXPECT_THAT(unscaledMatrix.RetrieveScaleSq(), IsClose(AZ::Vector3::CreateOne()));
+        const AZ::Vector3 scale(2.8f, 0.7f, 1.3f);
+        AZ::Matrix3x4 scaledMatrix = orthogonalMatrix;
+        scaledMatrix.MultiplyByScale(scale);
+        EXPECT_THAT(scaledMatrix.RetrieveScaleSq(), IsClose(scale * scale));
+        EXPECT_THAT(scaledMatrix.RetrieveScaleSq(), IsClose(scaledMatrix.RetrieveScale() * scaledMatrix.RetrieveScale()));
+        scaledMatrix.ExtractScale();
+        EXPECT_THAT(scaledMatrix.RetrieveScaleSq(), IsClose(AZ::Vector3::CreateOne()));
+    }
+
+    TEST_P(Matrix3x4ScaleFixture, GetReciprocalScaled)
+    {
+        const AZ::Matrix3x4 orthogonalMatrix = GetParam();
+        EXPECT_THAT(orthogonalMatrix.GetReciprocalScaled(), IsClose(orthogonalMatrix));
+        const AZ::Vector3 scale(2.8f, 0.7f, 1.3f);
+        AZ::Matrix3x4 scaledMatrix = orthogonalMatrix;
+        scaledMatrix.MultiplyByScale(scale);
+        AZ::Matrix3x4 reciprocalScaledMatrix = orthogonalMatrix;
+        reciprocalScaledMatrix.MultiplyByScale(scale.GetReciprocal());
+        EXPECT_THAT(scaledMatrix.GetReciprocalScaled(), IsClose(reciprocalScaledMatrix));
+    }
+
     INSTANTIATE_TEST_CASE_P(MATH_Matrix3x4, Matrix3x4ScaleFixture, ::testing::ValuesIn(MathTestData::OrthogonalMatrix3x4s));
 
     TEST(MATH_Matrix3x4, IsOrthogonal)

Code/Framework/AzCore/Tests/Math/Matrix4x4Tests.cpp

@@ -246,16 +246,16 @@ namespace UnitTest
         m2.SetRow(2, 15.0f, 16.0f, 17.0f, 18.0f);
         m2.SetRow(3, 19.0f, 20.0f, 21.0f, 22.0f);
         Matrix4x4 m3 = m1 * m2;
-        AZ_TEST_ASSERT(m3.GetRow(0).IsClose(Vector4(150.0f, 160.0f, 170.0f, 180.0f)));
-        AZ_TEST_ASSERT(m3.GetRow(1).IsClose(Vector4(358.0f, 384.0f, 410.0f, 436.0f)));
-        AZ_TEST_ASSERT(m3.GetRow(2).IsClose(Vector4(566.0f, 608.0f, 650.0f, 692.0f)));
-        AZ_TEST_ASSERT(m3.GetRow(3).IsClose(Vector4(774.0f, 832.0f, 890.0f, 948.0f)));
+        EXPECT_THAT(m3.GetRow(0), IsClose(Vector4(150.0f, 160.0f, 170.0f, 180.0f)));
+        EXPECT_THAT(m3.GetRow(1), IsClose(Vector4(358.0f, 384.0f, 410.0f, 436.0f)));
+        EXPECT_THAT(m3.GetRow(2), IsClose(Vector4(566.0f, 608.0f, 650.0f, 692.0f)));
+        EXPECT_THAT(m3.GetRow(3), IsClose(Vector4(774.0f, 832.0f, 890.0f, 948.0f)));
         Matrix4x4 m4 = m1;
         m4 *= m2;
-        AZ_TEST_ASSERT(m4.GetRow(0).IsClose(Vector4(150.0f, 160.0f, 170.0f, 180.0f)));
-        AZ_TEST_ASSERT(m4.GetRow(1).IsClose(Vector4(358.0f, 384.0f, 410.0f, 436.0f)));
-        AZ_TEST_ASSERT(m4.GetRow(2).IsClose(Vector4(566.0f, 608.0f, 650.0f, 692.0f)));
-        AZ_TEST_ASSERT(m4.GetRow(3).IsClose(Vector4(774.0f, 832.0f, 890.0f, 948.0f)));
+        EXPECT_THAT(m4.GetRow(0), IsClose(Vector4(150.0f, 160.0f, 170.0f, 180.0f)));
+        EXPECT_THAT(m4.GetRow(1), IsClose(Vector4(358.0f, 384.0f, 410.0f, 436.0f)));
+        EXPECT_THAT(m4.GetRow(2), IsClose(Vector4(566.0f, 608.0f, 650.0f, 692.0f)));
+        EXPECT_THAT(m4.GetRow(3), IsClose(Vector4(774.0f, 832.0f, 890.0f, 948.0f)));
     }
 
     TEST(MATH_Matrix4x4, TestVectorMultiplication)
@@ -265,18 +265,148 @@ namespace UnitTest
         m1.SetRow(1, 5.0f, 6.0f, 7.0f, 8.0f);
         m1.SetRow(2, 9.0f, 10.0f, 11.0f, 12.0f);
         m1.SetRow(3, 13.0f, 14.0f, 15.0f, 16.0f);
-        AZ_TEST_ASSERT((m1 * Vector3(1.0f, 2.0f, 3.0f)).IsClose(Vector3(18.0f, 46.0f, 74.0f)));
-        AZ_TEST_ASSERT((m1 * Vector4(1.0f, 2.0f, 3.0f, 4.0f)).IsClose(Vector4(30.0f, 70.0f, 110.0f, 150.0f)));
-        AZ_TEST_ASSERT(m1.TransposedMultiply3x3(Vector3(1.0f, 2.0f, 3.0f)).IsClose(Vector3(38.0f, 44.0f, 50.0f)));
-        AZ_TEST_ASSERT(m1.Multiply3x3(Vector3(1.0f, 2.0f, 3.0f)).IsClose(Vector3(14.0f, 38.0f, 62.0f)));
+        EXPECT_THAT((m1 * Vector3(1.0f, 2.0f, 3.0f)), IsClose(Vector3(18.0f, 46.0f, 74.0f)));
+        EXPECT_THAT((m1 * Vector4(1.0f, 2.0f, 3.0f, 4.0f)), IsClose(Vector4(30.0f, 70.0f, 110.0f, 150.0f)));
+        EXPECT_THAT(m1.TransposedMultiply3x3(Vector3(1.0f, 2.0f, 3.0f)), IsClose(Vector3(38.0f, 44.0f, 50.0f)));
+        EXPECT_THAT(m1.Multiply3x3(Vector3(1.0f, 2.0f, 3.0f)), IsClose(Vector3(14.0f, 38.0f, 62.0f)));
         Vector3 v1(1.0f, 2.0f, 3.0f);
-        AZ_TEST_ASSERT((v1 * m1).IsClose(Vector3(51.0f, 58.0f, 65.0f)));
+        EXPECT_THAT((v1 * m1), IsClose(Vector3(51.0f, 58.0f, 65.0f)));
         v1 *= m1;
-        AZ_TEST_ASSERT(v1.IsClose(Vector3(51.0f, 58.0f, 65.0f)));
+        EXPECT_THAT(v1, IsClose(Vector3(51.0f, 58.0f, 65.0f)));
         Vector4 v2(1.0f, 2.0f, 3.0f, 4.0f);
-        AZ_TEST_ASSERT((v2 * m1).IsClose(Vector4(90.0f, 100.0f, 110.0f, 120.0f)));
+        EXPECT_THAT((v2 * m1), IsClose(Vector4(90.0f, 100.0f, 110.0f, 120.0f)));
         v2 *= m1;
-        AZ_TEST_ASSERT(v2.IsClose(Vector4(90.0f, 100.0f, 110.0f, 120.0f)));
+        EXPECT_THAT(v2, IsClose(Vector4(90.0f, 100.0f, 110.0f, 120.0f)));
+    }
+
+    TEST(MATH_Matrix4x4, TestSum)
+    {
+        Matrix4x4 m1;
+        m1.SetRow(0, 1.0f, 2.0f, 3.0f, 4.0f);
+        m1.SetRow(1, 5.0f, 6.0f, 7.0f, 8.0f);
+        m1.SetRow(2, 9.0f, 10.0f, 11.0f, 12.0f);
+        m1.SetRow(3, 13.0f, 14.0f, 15.0f, 16.0f);
+        Matrix4x4 m2;
+        m2.SetRow(0, 7.0f, 8.0f, 9.0f, 10.0f);
+        m2.SetRow(1, 11.0f, 12.0f, 13.0f, 14.0f);
+        m2.SetRow(2, 15.0f, 16.0f, 17.0f, 18.0f);
+        m2.SetRow(3, 19.0f, 20.0f, 21.0f, 22.0f);
+
+        Matrix4x4 m3 = m1 + m2;
+        EXPECT_THAT(m3.GetRow(0), IsClose(Vector4(8.0f, 10.0f, 12.0f, 14.0f)));
+        EXPECT_THAT(m3.GetRow(1), IsClose(Vector4(16.0f, 18.0f, 20.0f, 22.0f)));
+        EXPECT_THAT(m3.GetRow(2), IsClose(Vector4(24.0f, 26.0f, 28.0f, 30.0f)));
+        EXPECT_THAT(m3.GetRow(3), IsClose(Vector4(32.0f, 34.0f, 36.0f, 38.0f)));
+
+        m3 = m1;
+        m3 += m2;
+        EXPECT_THAT(m3.GetRow(0), IsClose(Vector4(8.0f, 10.0f, 12.0f, 14.0f)));
+        EXPECT_THAT(m3.GetRow(1), IsClose(Vector4(16.0f, 18.0f, 20.0f, 22.0f)));
+        EXPECT_THAT(m3.GetRow(2), IsClose(Vector4(24.0f, 26.0f, 28.0f, 30.0f)));
+        EXPECT_THAT(m3.GetRow(3), IsClose(Vector4(32.0f, 34.0f, 36.0f, 38.0f)));
+    }
+
+    TEST(MATH_Matrix4x4, TestDifference)
+    {
+        Matrix4x4 m1;
+        m1.SetRow(0, 1.0f, 2.0f, 3.0f, 4.0f);
+        m1.SetRow(1, 5.0f, 6.0f, 7.0f, 8.0f);
+        m1.SetRow(2, 9.0f, 10.0f, 11.0f, 12.0f);
+        m1.SetRow(3, 13.0f, 14.0f, 15.0f, 16.0f);
+        Matrix4x4 m2;
+        m2.SetRow(0, 7.0f, 8.0f, 9.0f, 10.0f);
+        m2.SetRow(1, 11.0f, 12.0f, 13.0f, 14.0f);
+        m2.SetRow(2, 15.0f, 16.0f, 17.0f, 18.0f);
+        m2.SetRow(3, 19.0f, 20.0f, 21.0f, 22.0f);
+
+        Matrix4x4 m3 = m1 - m2;
+        EXPECT_THAT(m3.GetRow(0), IsClose(Vector4(-6.0f, -6.0f, -6.0f, -6.0f)));
+        EXPECT_THAT(m3.GetRow(1), IsClose(Vector4(-6.0f, -6.0f, -6.0f, -6.0f)));
+        EXPECT_THAT(m3.GetRow(2), IsClose(Vector4(-6.0f, -6.0f, -6.0f, -6.0f)));
+        EXPECT_THAT(m3.GetRow(3), IsClose(Vector4(-6.0f, -6.0f, -6.0f, -6.0f)));
+        m3 = m1;
+        m3 -= m2;
+        EXPECT_THAT(m3.GetRow(0), IsClose(Vector4(-6.0f, -6.0f, -6.0f, -6.0f)));
+        EXPECT_THAT(m3.GetRow(1), IsClose(Vector4(-6.0f, -6.0f, -6.0f, -6.0f)));
+        EXPECT_THAT(m3.GetRow(2), IsClose(Vector4(-6.0f, -6.0f, -6.0f, -6.0f)));
+        EXPECT_THAT(m3.GetRow(3), IsClose(Vector4(-6.0f, -6.0f, -6.0f, -6.0f)));
+    }
+
+    TEST(MATH_Matrix4x4, TestScalarMultiplication)
+    {
+        Matrix4x4 m1;
+        m1.SetRow(0, 1.0f, 2.0f, 3.0f, 4.0f);
+        m1.SetRow(1, 5.0f, 6.0f, 7.0f, 8.0f);
+        m1.SetRow(2, 9.0f, 10.0f, 11.0f, 12.0f);
+        m1.SetRow(3, 13.0f, 14.0f, 15.0f, 16.0f);
+        Matrix4x4 m2;
+        m2.SetRow(0, 7.0f, 8.0f, 9.0f, 10.0f);
+        m2.SetRow(1, 11.0f, 12.0f, 13.0f, 14.0f);
+        m2.SetRow(2, 15.0f, 16.0f, 17.0f, 18.0f);
+        m2.SetRow(3, 19.0f, 20.0f, 21.0f, 22.0f);
+
+        Matrix4x4 m3 = m1 * 2.0f;
+        EXPECT_THAT(m3.GetRow(0), IsClose(Vector4(2.0f, 4.0f, 6.0f, 8.0f)));
+        EXPECT_THAT(m3.GetRow(1), IsClose(Vector4(10.0f, 12.0f, 14.0f, 16.0f)));
+        EXPECT_THAT(m3.GetRow(2), IsClose(Vector4(18.0f, 20.0f, 22.0f, 24.0f)));
+        EXPECT_THAT(m3.GetRow(3), IsClose(Vector4(26.0f, 28.0f, 30.0f, 32.0f)));
+        m3 = m1;
+        m3 *= 2.0f;
+        EXPECT_THAT(m3.GetRow(0), IsClose(Vector4(2.0f, 4.0f, 6.0f, 8.0f)));
+        EXPECT_THAT(m3.GetRow(1), IsClose(Vector4(10.0f, 12.0f, 14.0f, 16.0f)));
+        EXPECT_THAT(m3.GetRow(2), IsClose(Vector4(18.0f, 20.0f, 22.0f, 24.0f)));
+        EXPECT_THAT(m3.GetRow(3), IsClose(Vector4(26.0f, 28.0f, 30.0f, 32.0f)));
+        m3 = 2.0f * m1;
+        EXPECT_THAT(m3.GetRow(0), IsClose(Vector4(2.0f, 4.0f, 6.0f, 8.0f)));
+        EXPECT_THAT(m3.GetRow(1), IsClose(Vector4(10.0f, 12.0f, 14.0f, 16.0f)));
+        EXPECT_THAT(m3.GetRow(2), IsClose(Vector4(18.0f, 20.0f, 22.0f, 24.0f)));
+        EXPECT_THAT(m3.GetRow(3), IsClose(Vector4(26.0f, 28.0f, 30.0f, 32.0f)));
+    }
+
+    TEST(MATH_Matrix4x4, TestScalarDivision)
+    {
+        Matrix4x4 m1;
+        m1.SetRow(0, 1.0f, 2.0f, 3.0f, 4.0f);
+        m1.SetRow(1, 5.0f, 6.0f, 7.0f, 8.0f);
+        m1.SetRow(2, 9.0f, 10.0f, 11.0f, 12.0f);
+        m1.SetRow(3, 13.0f, 14.0f, 15.0f, 16.0f);
+        Matrix4x4 m2;
+        m2.SetRow(0, 7.0f, 8.0f, 9.0f, 10.0f);
+        m2.SetRow(1, 11.0f, 12.0f, 13.0f, 14.0f);
+        m2.SetRow(2, 15.0f, 16.0f, 17.0f, 18.0f);
+        m2.SetRow(3, 19.0f, 20.0f, 21.0f, 22.0f);
+
+        Matrix4x4 m3 = m1 / 0.5f;
+        EXPECT_THAT(m3.GetRow(0), IsClose(Vector4(2.0f, 4.0f, 6.0f, 8.0f)));
+        EXPECT_THAT(m3.GetRow(1), IsClose(Vector4(10.0f, 12.0f, 14.0f, 16.0f)));
+        EXPECT_THAT(m3.GetRow(2), IsClose(Vector4(18.0f, 20.0f, 22.0f, 24.0f)));
+        EXPECT_THAT(m3.GetRow(3), IsClose(Vector4(26.0f, 28.0f, 30.0f, 32.0f)));
+        m3 = m1;
+        m3 /= 0.5f;
+        EXPECT_THAT(m3.GetRow(0), IsClose(Vector4(2.0f, 4.0f, 6.0f, 8.0f)));
+        EXPECT_THAT(m3.GetRow(1), IsClose(Vector4(10.0f, 12.0f, 14.0f, 16.0f)));
+        EXPECT_THAT(m3.GetRow(2), IsClose(Vector4(18.0f, 20.0f, 22.0f, 24.0f)));
+        EXPECT_THAT(m3.GetRow(3), IsClose(Vector4(26.0f, 28.0f, 30.0f, 32.0f)));
+    }
+
+    TEST(MATH_Matrix4x4, TestNegation)
+    {
+        Matrix4x4 m1;
+        m1.SetRow(0, 1.0f, 2.0f, 3.0f, 4.0f);
+        m1.SetRow(1, 5.0f, 6.0f, 7.0f, 8.0f);
+        m1.SetRow(2, 9.0f, 10.0f, 11.0f, 12.0f);
+        m1.SetRow(3, 13.0f, 14.0f, 15.0f, 16.0f);
+        EXPECT_THAT(-(-m1), IsClose(m1));
+        EXPECT_THAT(-Matrix4x4::CreateZero(), IsClose(Matrix4x4::CreateZero()));
+
+        Matrix4x4 m2 = -m1;
+        EXPECT_THAT(m2.GetRow(0), IsClose(Vector4(-1.0f, -2.0f, -3.0f, -4.0f)));
+        EXPECT_THAT(m2.GetRow(1), IsClose(Vector4(-5.0f, -6.0f, -7.0f, -8.0f)));
+        EXPECT_THAT(m2.GetRow(2), IsClose(Vector4(-9.0f, -10.0f, -11.0f, -12.0f)));
+        EXPECT_THAT(m2.GetRow(3), IsClose(Vector4(-13.0f, -14.0f, -15.0f, -16.0f)));
+
+        Matrix4x4 m3 = m1 + (-m1);
+        EXPECT_THAT(m3, IsClose(Matrix4x4::CreateZero()));
     }
 
     TEST(MATH_Matrix4x4, TestTranspose)
@@ -368,4 +498,36 @@ namespace UnitTest
         m1.SetRow(3, 13.0f, 14.0f, 15.0f, 16.0f);
         AZ_TEST_ASSERT(m1.GetDiagonal() == Vector4(1.0f, 6.0f, 11.0f, 16.0f));
     }
+
+    TEST(MATH_Matrix4x4, TestScaleAccess)
+    {
+        Matrix4x4 m1 = Matrix4x4::CreateRotationX(DegToRad(40.0f)) * Matrix4x4::CreateScale(Vector3(2.0f, 3.0f, 4.0f));
+        EXPECT_THAT(m1.RetrieveScale(), IsClose(Vector3(2.0f, 3.0f, 4.0f)));
+        EXPECT_THAT(m1.ExtractScale(), IsClose(Vector3(2.0f, 3.0f, 4.0f)));
+        EXPECT_THAT(m1.RetrieveScale(), IsClose(Vector3::CreateOne()));
+        m1.MultiplyByScale(Vector3(3.0f, 4.0f, 5.0f));
+        EXPECT_THAT(m1.RetrieveScale(), IsClose(Vector3(3.0f, 4.0f, 5.0f)));
+    }
+
+    TEST(MATH_Matrix4x4, TestScaleSqAccess)
+    {
+        Matrix4x4 m1 = Matrix4x4::CreateRotationX(DegToRad(40.0f)) * Matrix4x4::CreateScale(Vector3(2.0f, 3.0f, 4.0f));
+        EXPECT_THAT(m1.RetrieveScaleSq(), IsClose(Vector3(4.0f, 9.0f, 16.0f)));
+        m1.ExtractScale();
+        EXPECT_THAT(m1.RetrieveScaleSq(), IsClose(Vector3::CreateOne()));
+        m1.MultiplyByScale(Vector3(3.0f, 4.0f, 5.0f));
+        EXPECT_THAT(m1.RetrieveScaleSq(), IsClose(Vector3(9.0f, 16.0f, 25.0f)));
+    }
+
+    TEST(MATH_Matrix4x4, TestReciprocalScaled)
+    {
+        Matrix4x4 orthogonalMatrix = Matrix4x4::CreateRotationX(DegToRad(40.0f));
+        EXPECT_THAT(orthogonalMatrix.GetReciprocalScaled(), IsClose(orthogonalMatrix));
+        const AZ::Vector3 scale(2.8f, 0.7f, 1.3f);
+        AZ::Matrix4x4 scaledMatrix = orthogonalMatrix;
+        scaledMatrix.MultiplyByScale(scale);
+        AZ::Matrix4x4 reciprocalScaledMatrix = orthogonalMatrix;
+        reciprocalScaledMatrix.MultiplyByScale(scale.GetReciprocal());
+        EXPECT_THAT(scaledMatrix.GetReciprocalScaled(), IsClose(reciprocalScaledMatrix));
+    }
 }

Code/Framework/AzCore/Tests/Serialization.cpp

@@ -1232,6 +1232,10 @@ namespace UnitTest
         void UnregisterComponentDescriptor(const ComponentDescriptor*) override { }
         void RegisterEntityAddedEventHandler(EntityAddedEvent::Handler&) override { }
         void RegisterEntityRemovedEventHandler(EntityRemovedEvent::Handler&) override { }
+        void RegisterEntityActivatedEventHandler(EntityActivatedEvent::Handler&) override { }
+        void RegisterEntityDeactivatedEventHandler(EntityDeactivatedEvent::Handler&) override { }
+        void SignalEntityActivated(Entity*) override { }
+        void SignalEntityDeactivated(Entity*) override { }
         bool AddEntity(Entity*) override { return false; }
         bool RemoveEntity(Entity*) override { return false; }
         bool DeleteEntity(const EntityId&) override { return false; }
@@ -1252,6 +1256,7 @@ namespace UnitTest
             m_serializeContext.reset(aznew AZ::SerializeContext());
 
             ComponentApplicationBus::Handler::BusConnect();
+            AZ::Interface<AZ::ComponentApplicationRequests>::Register(this);
 
             AZ::AllocatorInstance<AZ::PoolAllocator>::Create();
             AZ::AllocatorInstance<AZ::ThreadPoolAllocator>::Create();
@@ -1270,6 +1275,7 @@ namespace UnitTest
             AZ::AllocatorInstance<AZ::ThreadPoolAllocator>::Destroy();
             AZ::AllocatorInstance<AZ::PoolAllocator>::Destroy();
 
+            AZ::Interface<AZ::ComponentApplicationRequests>::Unregister(this);
             ComponentApplicationBus::Handler::BusDisconnect();
         }
 

Code/Framework/AzCore/Tests/Serialization/Json/BaseJsonSerializerTests.cpp

@@ -110,7 +110,7 @@ namespace JsonSerializationTests
         EXPECT_EQ(42, value);
     }
 
-    TEST_F(BaseJsonSerializerTests, ContinueLoading_PointerInstance_ValueLoadedCorrectly)
+    TEST_F(BaseJsonSerializerTests, ContinueLoading_ToPointerInstance_ValueLoadedCorrectly)
     {
         using namespace AZ::JsonSerializationResult;
 
@@ -119,13 +119,62 @@ namespace JsonSerializationTests
         int value = 0;
         int* ptrValue = &value;
 
-        ResultCode result = ContinueLoading(&ptrValue, azrtti_typeid<int>(), json, *m_jsonDeserializationContext, Flags::ResolvePointer);
+        ResultCode result =
+            ContinueLoading(&ptrValue, azrtti_typeid<int>(), json, *m_jsonDeserializationContext, ContinuationFlags::ResolvePointer);
 
         EXPECT_EQ(Processing::Completed, result.GetProcessing());
         ASSERT_NE(nullptr, ptrValue);
         EXPECT_EQ(42, value);
     }
 
+    TEST_F(BaseJsonSerializerTests, ContinueLoading_ToNullPointer_ValueLoadedCorrectly)
+    {
+        using namespace AZ::JsonSerializationResult;
+
+        rapidjson::Value json;
+        json.Set(42);
+        int* ptrValue = nullptr;
+
+        ResultCode result =
+            ContinueLoading(&ptrValue, azrtti_typeid<int>(), json, *m_jsonDeserializationContext, ContinuationFlags::ResolvePointer);
+
+        EXPECT_EQ(Processing::Completed, result.GetProcessing());
+        ASSERT_NE(nullptr, ptrValue);
+        EXPECT_EQ(42, *ptrValue);
+
+        azfree(ptrValue, AZ::SystemAllocator, sizeof(int), alignof(int));
+    }
+
+    TEST_F(BaseJsonSerializerTests, ContinueLoading_DefaultToNullPointer_ValueLoadedCorrectly)
+    {
+        using namespace AZ::JsonSerializationResult;
+
+        rapidjson::Value json(rapidjson::kObjectType);
+        int* ptrValue = nullptr;
+
+        ResultCode result =
+            ContinueLoading(&ptrValue, azrtti_typeid<int>(), json, *m_jsonDeserializationContext, ContinuationFlags::ResolvePointer);
+
+        EXPECT_EQ(Processing::Completed, result.GetProcessing());
+        ASSERT_NE(nullptr, ptrValue);
+        
+        azfree(ptrValue, AZ::SystemAllocator, sizeof(int), alignof(int));
+    }
+
+    TEST_F(BaseJsonSerializerTests, ContinueLoading_NullDeletesObject_ValueLoadedCorrectly)
+    {
+        using namespace AZ::JsonSerializationResult;
+
+        rapidjson::Value json(rapidjson::kNullType);
+        int* ptrValue = reinterpret_cast<int*>(azmalloc(sizeof(int), alignof(int), AZ::SystemAllocator));
+
+        ResultCode result =
+            ContinueLoading(&ptrValue, azrtti_typeid<int>(), json, *m_jsonDeserializationContext, ContinuationFlags::ResolvePointer);
+
+        EXPECT_EQ(Processing::Completed, result.GetProcessing());
+        ASSERT_EQ(nullptr, ptrValue);
+    }
+
     //
     // ContinueStoring
     //
@@ -149,21 +198,82 @@ namespace JsonSerializationTests
         int value = 42;
         int* ptrValue = &value;
 
-        ResultCode result = ContinueStoring(*m_jsonDocument, &ptrValue, nullptr, azrtti_typeid<int>(), *m_jsonSerializationContext,
-            Flags::ResolvePointer);
+        ResultCode result = ContinueStoring(
+            *m_jsonDocument, &ptrValue, nullptr, azrtti_typeid<int>(), *m_jsonSerializationContext, ContinuationFlags::ResolvePointer);
 
         EXPECT_EQ(Processing::Completed, result.GetProcessing());
         Expect_DocStrEq("42");
     }
 
+    TEST_F(BaseJsonSerializerTests, ContinueStoring_StorePointerToFullDefaultedInstance_ValueStoredCorrectly)
+    {
+        using namespace AZ::JsonSerializationResult;
+
+        int value = 42;
+        int* ptrValue = &value;
+        int value2 = 42;
+        int* defaultPtrValue = &value2;
+
+        ResultCode result = ContinueStoring(
+            *m_jsonDocument, &ptrValue, &defaultPtrValue, azrtti_typeid<int>(), *m_jsonSerializationContext,
+            ContinuationFlags::ResolvePointer);
+
+        EXPECT_EQ(Processing::Completed, result.GetProcessing());
+        Expect_DocStrEq("{}");
+    }
+
+    TEST_F(BaseJsonSerializerTests, ContinueStoring_StorePointerToNullptr_ValueStoredCorrectly)
+    {
+        using namespace AZ::JsonSerializationResult;
+
+        int* ptrValue = nullptr;
+        
+        ResultCode result = ContinueStoring(
+            *m_jsonDocument, &ptrValue, nullptr, azrtti_typeid<int>(), *m_jsonSerializationContext, ContinuationFlags::ResolvePointer);
+
+        EXPECT_EQ(Processing::Completed, result.GetProcessing());
+        Expect_DocStrEq("null");
+    }
+
+    TEST_F(BaseJsonSerializerTests, ContinueStoring_StorePointerToNullptrWithValueDefault_ValueStoredCorrectly)
+    {
+        using namespace AZ::JsonSerializationResult;
+
+        int* ptrValue = nullptr;
+        int value2 = 42;
+        int* defaultPtrValue = &value2;
+
+        ResultCode result = ContinueStoring(
+            *m_jsonDocument, &ptrValue, &defaultPtrValue, azrtti_typeid<int>(), *m_jsonSerializationContext,
+            ContinuationFlags::ResolvePointer);
+
+        EXPECT_EQ(Processing::Completed, result.GetProcessing());
+        Expect_DocStrEq("null");
+    }
+
+    TEST_F(BaseJsonSerializerTests, ContinueStoring_StorePointerToNullptrWithNullPtrDefault_NullPtrIsStored)
+    {
+        using namespace AZ::JsonSerializationResult;
+
+        int* ptrValue = nullptr;
+        int* defaultPtrValue = nullptr;
+
+        ResultCode result = ContinueStoring(
+            *m_jsonDocument, &ptrValue, &defaultPtrValue, azrtti_typeid<int>(), *m_jsonSerializationContext,
+            ContinuationFlags::ResolvePointer);
+
+        EXPECT_EQ(Processing::Completed, result.GetProcessing());
+        Expect_DocStrEq("null");
+    }
+
     TEST_F(BaseJsonSerializerTests, ContinueStoring_ReplaceDefault_ValueStoredCorrectly)
     {
         using namespace AZ::JsonSerializationResult;
 
         int value = 42;
         
-        ResultCode result = ContinueStoring(*m_jsonDocument, &value, nullptr, azrtti_typeid<int>(), *m_jsonSerializationContext,
-            Flags::ReplaceDefault);
+        ResultCode result = ContinueStoring(
+            *m_jsonDocument, &value, nullptr, azrtti_typeid<int>(), *m_jsonSerializationContext, ContinuationFlags::ReplaceDefault);
 
         EXPECT_EQ(Processing::Completed, result.GetProcessing());
         Expect_DocStrEq("42");
@@ -177,7 +287,7 @@ namespace JsonSerializationTests
         int* ptrValue = &value;
 
         ResultCode result = ContinueStoring(*m_jsonDocument, &ptrValue, nullptr, azrtti_typeid<int>(), *m_jsonSerializationContext,
-            Flags::ResolvePointer | Flags::ReplaceDefault);
+            ContinuationFlags::ResolvePointer | ContinuationFlags::ReplaceDefault);
 
         EXPECT_EQ(Processing::Completed, result.GetProcessing());
         Expect_DocStrEq("42");
@@ -190,8 +300,8 @@ namespace JsonSerializationTests
         int value = 42;
         AZ::Uuid unknownType("{09AE3CEC-EBFC-41EC-A7F6-949721521716}");
 
-        ResultCode result = ContinueStoring(*m_jsonDocument, &value, nullptr, unknownType, *m_jsonSerializationContext,
-            Flags::ReplaceDefault);
+        ResultCode result =
+            ContinueStoring(*m_jsonDocument, &value, nullptr, unknownType, *m_jsonSerializationContext, ContinuationFlags::ReplaceDefault);
 
         EXPECT_EQ(Processing::Halted, result.GetProcessing());
     }

Code/Framework/AzCore/Tests/Serialization/Json/JsonSerializerConformityTests.h

@@ -90,9 +90,14 @@ namespace JsonSerializationTests
         virtual ~JsonSerializerConformityTestDescriptor() = default;
 
         virtual AZStd::shared_ptr<AZ::BaseJsonSerializer> CreateSerializer() = 0;
-        
+
         //! Create an instance of the target type with all values set to default.
         virtual AZStd::shared_ptr<T> CreateDefaultInstance() = 0;
+        //! Create an instance of the target type that constructed with default constructor.
+        //! This will be the same instance that Json Serialization creates for dynamic types. Typically it's the same
+        //! as from CreateDefaultInstance(), except of types, such as pointers, that need to do minimal (de)serialization
+        //! to initialize an object.
+        virtual AZStd::shared_ptr<T> CreateDefaultConstructedInstance() { return CreateDefaultInstance(); }
         //! Create an instance of the target type with some values set and some kept on defaults.
         //! If the target type doesn't support partial specialization this can be ignored and
         //! tests for partial support will be skipped.
@@ -316,10 +321,10 @@ namespace JsonSerializationTests
             ASSERT_FALSE(this->m_jsonDocument->HasParseError());
 
             auto serializer = this->m_description.CreateSerializer();
-            auto instance = this->m_description.CreateDefaultInstance();
+            auto instance = this->m_description.CreateDefaultConstructedInstance();
             auto original = this->m_description.CreateDefaultInstance();
 
-            ResultCode result = serializer->Load(instance.get(), azrtti_typeid(*original),
+            ResultCode result = serializer->Load(instance.get(), azrtti_typeid(*instance),
                 *this->m_jsonDocument, *this->m_jsonDeserializationContext);
 
             if (this->m_features.m_mandatoryFields.empty())
@@ -339,6 +344,42 @@ namespace JsonSerializationTests
         }
     }
 
+    TYPED_TEST_P(JsonSerializerConformityTests, Load_DeserializeEmptyObjectThroughMainLoad_SucceedsAndObjectMatchesDefaults)
+    {
+        using namespace AZ::JsonSerializationResult;
+
+        if (this->m_features.SupportsJsonType(rapidjson::kObjectType))
+        {
+            this->m_jsonDocument->Parse("{}");
+            ASSERT_FALSE(this->m_jsonDocument->HasParseError());
+
+            auto serializer = this->m_description.CreateSerializer();
+            auto instance = this->m_description.CreateDefaultConstructedInstance();
+            auto original = this->m_description.CreateDefaultInstance();
+
+            AZ::JsonDeserializerSettings settings;
+            settings.m_serializeContext = this->m_jsonDeserializationContext->GetSerializeContext();
+            settings.m_registrationContext = this->m_jsonDeserializationContext->GetRegistrationContext();
+            ResultCode result = AZ::JsonSerialization::Load(
+                instance.get(), azrtti_typeid(*instance), *this->m_jsonDocument, settings);
+            
+            if (this->m_features.m_mandatoryFields.empty())
+            {
+                EXPECT_EQ(Outcomes::DefaultsUsed, result.GetOutcome());
+                EXPECT_EQ(Processing::Completed, result.GetProcessing());
+            }
+            else
+            {
+                EXPECT_EQ(Outcomes::Unsupported, result.GetOutcome());
+                bool validProcessing =
+                    result.GetProcessing() == Processing::Altered ||
+                    result.GetProcessing() == Processing::PartialAlter;
+                EXPECT_TRUE(validProcessing);
+            }
+            EXPECT_TRUE(this->m_description.AreEqual(*original, *instance));
+        }
+    }
+
     TYPED_TEST_P(JsonSerializerConformityTests, Load_DeserializeEmptyArray_SucceedsAndObjectMatchesDefaults)
     {
         using namespace AZ::JsonSerializationResult;
@@ -349,7 +390,7 @@ namespace JsonSerializationTests
             ASSERT_FALSE(this->m_jsonDocument->HasParseError());
 
             auto serializer = this->m_description.CreateSerializer();
-            auto instance = this->m_description.CreateDefaultInstance();
+            auto instance = this->m_description.CreateDefaultConstructedInstance();
             auto original = this->m_description.CreateDefaultInstance();
 
             this->m_deserializationSettings->m_clearContainers = false;
@@ -384,7 +425,7 @@ namespace JsonSerializationTests
             ASSERT_FALSE(this->m_jsonDocument->HasParseError());
 
             auto serializer = this->m_description.CreateSerializer();
-            auto instance = this->m_description.CreateDefaultInstance();
+            auto instance = this->m_description.CreateDefaultConstructedInstance();
             auto original = this->m_description.CreateDefaultInstance();
 
             this->m_deserializationSettings->m_clearContainers = true;
@@ -488,7 +529,7 @@ namespace JsonSerializationTests
         ASSERT_FALSE(this->m_jsonDocument->HasParseError());
 
         auto serializer = this->m_description.CreateSerializer();
-        auto instance = this->m_description.CreateDefaultInstance();
+        auto instance = this->m_description.CreateDefaultConstructedInstance();
         auto compare = this->m_description.CreateFullySetInstance();
         
         ResultCode result = serializer->Load(instance.get(), azrtti_typeid(*instance),
@@ -499,6 +540,28 @@ namespace JsonSerializationTests
         EXPECT_TRUE(this->m_description.AreEqual(*instance, *compare));
     }
 
+    TYPED_TEST_P(JsonSerializerConformityTests, Load_DeserializeFullySetInstanceThroughMainLoad_SucceedsAndObjectMatchesFullySetInstance)
+    {
+        using namespace AZ::JsonSerializationResult;
+
+        AZStd::string_view json = this->m_description.GetJsonFor_Load_DeserializeFullySetInstance();
+        this->m_jsonDocument->Parse(json.data());
+        ASSERT_FALSE(this->m_jsonDocument->HasParseError());
+
+        auto serializer = this->m_description.CreateSerializer();
+        auto instance = this->m_description.CreateDefaultConstructedInstance();
+        auto compare = this->m_description.CreateFullySetInstance();
+
+        AZ::JsonDeserializerSettings settings;
+        settings.m_serializeContext = this->m_jsonDeserializationContext->GetSerializeContext();
+        settings.m_registrationContext = this->m_jsonDeserializationContext->GetRegistrationContext();
+        ResultCode result = AZ::JsonSerialization::Load(instance.get(), azrtti_typeid(*instance), *this->m_jsonDocument, settings);
+
+        EXPECT_EQ(Outcomes::Success, result.GetOutcome());
+        EXPECT_EQ(Processing::Completed, result.GetProcessing());
+        EXPECT_TRUE(this->m_description.AreEqual(*instance, *compare));
+    }
+
     TYPED_TEST_P(JsonSerializerConformityTests, Load_DeserializeWithMissingMandatoryField_LoadFailedAndUnsupportedReported)
     {
         using namespace AZ::JsonSerializationResult;
@@ -518,7 +581,7 @@ namespace JsonSerializationTests
                 ASSERT_NE(this->m_jsonDocument->MemberEnd(), memberToErase);
                 this->m_jsonDocument->RemoveMember(memberToErase);
 
-                auto instance = this->m_description.CreateDefaultInstance();
+                auto instance = this->m_description.CreateDefaultConstructedInstance();
                 
                 ResultCode result = serializer->Load(instance.get(), azrtti_typeid(*instance),
                     *this->m_jsonDocument, *this->m_jsonDeserializationContext);
@@ -546,7 +609,7 @@ namespace JsonSerializationTests
             ASSERT_FALSE(this->m_jsonDocument->HasParseError());
 
             auto serializer = this->m_description.CreateSerializer();
-            auto instance = this->m_description.CreateDefaultInstance();
+            auto instance = this->m_description.CreateDefaultConstructedInstance();
             auto compare = this->m_description.CreatePartialDefaultInstance();
             ASSERT_NE(nullptr, compare);
 
@@ -567,7 +630,7 @@ namespace JsonSerializationTests
         ASSERT_FALSE(this->m_jsonDocument->HasParseError());
 
         auto serializer = this->m_description.CreateSerializer();
-        auto instance = this->m_description.CreateDefaultInstance();
+        auto instance = this->m_description.CreateDefaultConstructedInstance();
         
         AZ::ScopedContextReporter reporter(*this->m_jsonDeserializationContext,
             [](AZStd::string_view message, ResultCode result, AZStd::string_view path) -> ResultCode
@@ -604,7 +667,7 @@ namespace JsonSerializationTests
             }
 
             auto serializer = this->m_description.CreateSerializer();
-            auto instance = this->m_description.CreateDefaultInstance();
+            auto instance = this->m_description.CreateDefaultConstructedInstance();
             auto compare = this->m_description.CreateFullySetInstance();
 
             ResultCode result = serializer->Load(instance.get(), azrtti_typeid(*instance),
@@ -635,7 +698,7 @@ namespace JsonSerializationTests
             }
 
             auto serializer = this->m_description.CreateSerializer();
-            auto instance = this->m_description.CreateDefaultInstance();
+            auto instance = this->m_description.CreateDefaultConstructedInstance();
             
             ResultCode result = serializer->Load(instance.get(), azrtti_typeid(*instance),
                 *this->m_jsonDocument, *this->m_jsonDeserializationContext);
@@ -693,6 +756,36 @@ namespace JsonSerializationTests
         }
     }
 
+    TYPED_TEST_P(JsonSerializerConformityTests, Store_SerializeDefaultInstanceThroughMainStore_EmptyJsonReturned)
+    {
+        using namespace AZ::JsonSerializationResult;
+
+        auto serializer = this->m_description.CreateSerializer();
+        auto instance = this->m_description.CreateDefaultInstance();
+        rapidjson::Value convertedValue = this->CreateExplicitDefault();
+
+        AZ::JsonSerializerSettings settings;
+        settings.m_serializeContext = this->m_jsonDeserializationContext->GetSerializeContext();
+        settings.m_registrationContext = this->m_jsonDeserializationContext->GetRegistrationContext();
+        ResultCode result = AZ::JsonSerialization::Store(
+            convertedValue, this->m_jsonDocument->GetAllocator(), instance.get(), instance.get(), azrtti_typeid(*instance), settings);
+        
+        EXPECT_EQ(Processing::Completed, result.GetProcessing());
+        if (convertedValue.IsObject() && !this->m_features.m_mandatoryFields.empty())
+        {
+            ASSERT_EQ(convertedValue.MemberCount(), this->m_features.m_mandatoryFields.size());
+            for (const AZStd::string& mandatoryField : this->m_features.m_mandatoryFields)
+            {
+                EXPECT_NE(convertedValue.MemberEnd(), convertedValue.FindMember(mandatoryField.c_str()));
+            }
+        }
+        else
+        {
+            EXPECT_EQ(Outcomes::DefaultsUsed, result.GetOutcome());
+            this->Expect_ExplicitDefault(convertedValue);
+        }
+    }
+
     TYPED_TEST_P(JsonSerializerConformityTests, Store_SerializeWithDefaultsKept_FullyWrittenJson)
     {
         using namespace AZ::JsonSerializationResult;
@@ -924,6 +1017,20 @@ namespace JsonSerializationTests
         }
     }
 
+    TYPED_TEST_P(JsonSerializerConformityTests, GetOperationsFlags_ManualDefaultSetIfNeeded_ManualDefaultOperationSetIfMandatoryFieldsAreDeclared)
+    {
+        if (this->m_features.SupportsJsonType(rapidjson::kObjectType))
+        {
+            if (!this->m_features.m_mandatoryFields.empty())
+            {
+                auto serializer = this->m_description.CreateSerializer();
+                bool manuallyHandlesDefaults = (serializer->GetOperationsFlags() & AZ::BaseJsonSerializer::OperationFlags::ManualDefault) ==
+                    AZ::BaseJsonSerializer::OperationFlags::ManualDefault;
+                EXPECT_TRUE(manuallyHandlesDefaults);
+            }
+        }
+    }
+
     REGISTER_TYPED_TEST_CASE_P(JsonSerializerConformityTests,
         Registration_SerializerIsRegisteredWithContext_SerializerFound,
 
@@ -934,14 +1041,16 @@ namespace JsonSerializationTests
         Load_InvalidTypeOfArrayType_ReturnsUnsupported,
         Load_InvalidTypeOfStringType_ReturnsUnsupported,
         Load_InvalidTypeOfNumberType_ReturnsUnsupported,
-        
+
         Load_DeserializeUnreflectedType_ReturnsUnsupported,
         Load_DeserializeEmptyObject_SucceedsAndObjectMatchesDefaults,
+        Load_DeserializeEmptyObjectThroughMainLoad_SucceedsAndObjectMatchesDefaults,
         Load_DeserializeEmptyArray_SucceedsAndObjectMatchesDefaults,
         Load_DeserializeEmptyArrayWithClearEnabled_SucceedsAndObjectMatchesDefaults,
         Load_DeserializeEmptyArrayWithClearedTarget_SucceedsAndObjectMatchesDefaults,
         Load_InterruptClearingTarget_ContainerIsNotCleared,
         Load_DeserializeFullySetInstance_SucceedsAndObjectMatchesFullySetInstance,
+        Load_DeserializeFullySetInstanceThroughMainLoad_SucceedsAndObjectMatchesFullySetInstance,
         Load_DeserializePartialInstance_SucceedsAndObjectMatchesParialInstance,
         Load_DeserializeWithMissingMandatoryField_LoadFailedAndUnsupportedReported,
         Load_InsertAdditionalData_SucceedsAndObjectMatchesFullySetInstance,
@@ -950,6 +1059,7 @@ namespace JsonSerializationTests
 
         Store_SerializeUnreflectedType_ReturnsUnsupported,
         Store_SerializeDefaultInstance_EmptyJsonReturned,
+        Store_SerializeDefaultInstanceThroughMainStore_EmptyJsonReturned,
         Store_SerializeWithDefaultsKept_FullyWrittenJson,
         Store_SerializeFullySetInstance_StoredSuccessfullyAndJsonMatches,
         Store_SerializeWithoutDefault_StoredSuccessfullyAndJsonMatches,
@@ -957,10 +1067,12 @@ namespace JsonSerializationTests
         Store_SerializePartialInstance_StoredSuccessfullyAndJsonMatches,
         Store_SerializeEmptyArray_StoredSuccessfullyAndJsonMatches,
         Store_HaltedThroughCallback_StoreFailsAndHaltReported,
-        
+
         StoreLoad_RoundTripWithPartialDefault_IdenticalInstances,
         StoreLoad_RoundTripWithFullSet_IdenticalInstances,
-        StoreLoad_RoundTripWithDefaultsKept_IdenticalInstances);
+        StoreLoad_RoundTripWithDefaultsKept_IdenticalInstances,
+
+        GetOperationsFlags_ManualDefaultSetIfNeeded_ManualDefaultOperationSetIfMandatoryFieldsAreDeclared);
 } // namespace JsonSerializationTests
 
 namespace AZ

Code/Framework/AzCore/Tests/Serialization/Json/MathMatrixSerializerTests.cpp

@@ -0,0 +1,562 @@
+/*
+* All or portions of this file Copyright (c) Amazon.com, Inc. or its affiliates or
+* its licensors.
+*
+* For complete copyright and license terms please see the LICENSE at the root of this
+* distribution (the "License"). All use of this software is governed by the License,
+* or, if provided, by the license below or the license accompanying this file. Do not
+* remove or modify any license notices. This file is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+*
+*/
+
+#include <AzCore/Casting/numeric_cast.h>
+#include <AzCore/Math/MathMatrixSerializer.h>
+#include <AzCore/Math/Matrix3x3.h>
+#include <AzCore/Math/Matrix3x4.h>
+#include <AzCore/Math/Matrix4x4.h>
+#include <AzCore/Math/Random.h>
+#include <AzCore/Math/MathUtils.h>
+#include <AzCore/Serialization/Json/DoubleSerializer.h>
+#include <AzCore/Serialization/Json/RegistrationContext.h>
+#include <Tests/Serialization/Json/BaseJsonSerializerFixture.h>
+#include <Tests/Serialization/Json/JsonSerializerConformityTests.h>
+
+namespace JsonSerializationTests
+{
+    namespace DataHelper
+    {
+        // Build Matrix
+
+        template <typename MatrixType>
+        MatrixType BuildMatrixRotationWithSale(const AZ::Vector3& angles, float scale)
+        {
+            // start a matrix with angle degrees
+            const AZ::Vector3 eulerRadians = AZ::Vector3DegToRad(angles);
+            const auto rotX = MatrixType::CreateRotationX(eulerRadians.GetX());
+            const auto rotY = MatrixType::CreateRotationY(eulerRadians.GetY());
+            const auto rotZ = MatrixType::CreateRotationZ(eulerRadians.GetZ());
+            auto matrix = rotX * rotY * rotZ;
+
+            // apply a scale
+            matrix.MultiplyByScale(AZ::Vector3{ scale });
+            return matrix;
+        }
+
+        template <typename MatrixType>
+        MatrixType BuildMatrix(const AZ::Vector3& angles, float scale, const AZ::Vector3& translation)
+        {
+            auto matrix = BuildMatrixRotationWithSale<MatrixType>(angles, scale);
+            matrix.SetTranslation(translation);
+            return matrix;
+        }
+
+        template <>
+        AZ::Matrix3x3 BuildMatrix(const AZ::Vector3& angles, float scale, const AZ::Vector3&)
+        {
+            return BuildMatrixRotationWithSale<AZ::Matrix3x3>(angles, scale);
+        }
+
+        // Arbitrary Matrix
+
+        template <typename MatrixType>
+        MatrixType CreateArbitraryMatrixRotationAndSale(AZ::SimpleLcgRandom& random)
+        {
+            // start a matrix with arbitrary degrees
+            float roll = random.GetRandomFloat() * 360.0f;
+            float pitch = random.GetRandomFloat() * 360.0f;
+            float yaw = random.GetRandomFloat() * 360.0f;
+            const AZ::Vector3 eulerRadians = AZ::Vector3DegToRad(AZ::Vector3{ roll, pitch, yaw });
+            const auto rotX = MatrixType::CreateRotationX(eulerRadians.GetX());
+            const auto rotY = MatrixType::CreateRotationY(eulerRadians.GetY());
+            const auto rotZ = MatrixType::CreateRotationZ(eulerRadians.GetZ());
+            auto matrix = rotX * rotY * rotZ;
+
+            // apply a scale
+            matrix.MultiplyByScale(AZ::Vector3{ random.GetRandomFloat() });
+            return matrix;
+        }
+
+        template <typename MatrixType>
+        void AssignArbitrarySetTranslation(MatrixType& matrix, AZ::SimpleLcgRandom& random)
+        {
+            float x = random.GetRandomFloat() * 10000.0f;
+            float y = random.GetRandomFloat() * 10000.0f;
+            float z = random.GetRandomFloat() * 10000.0f;
+            matrix.SetTranslation(AZ::Vector3{ x, y, z });
+        }
+
+        template <typename MatrixType>
+        MatrixType CreateArbitraryMatrix(size_t seed);
+
+        template <>
+        AZ::Matrix3x3 CreateArbitraryMatrix(size_t seed)
+        {
+            AZ::SimpleLcgRandom random(seed);
+            return CreateArbitraryMatrixRotationAndSale<AZ::Matrix3x3>(random);
+        }
+
+        template <>
+        AZ::Matrix3x4 CreateArbitraryMatrix(size_t seed)
+        {
+            AZ::SimpleLcgRandom random(seed);
+            auto matrix = CreateArbitraryMatrixRotationAndSale<AZ::Matrix3x4>(random);
+            AssignArbitrarySetTranslation<AZ::Matrix3x4>(matrix, random);
+            return matrix;
+        }
+
+        template <>
+        AZ::Matrix4x4 CreateArbitraryMatrix(size_t seed)
+        {
+            AZ::SimpleLcgRandom random(seed);
+            auto matrix = CreateArbitraryMatrixRotationAndSale<AZ::Matrix4x4>(random);
+            AssignArbitrarySetTranslation<AZ::Matrix4x4>(matrix, random);
+            return matrix;
+        }
+
+        // CreateQuaternion   
+
+        template<typename MatrixType>
+        AZ::Quaternion CreateQuaternion(const MatrixType& matrix);
+
+        template<>
+        AZ::Quaternion CreateQuaternion<AZ::Matrix3x3>(const AZ::Matrix3x3& matrix)
+        {
+            return AZ::Quaternion::CreateFromMatrix3x3(matrix);
+        }
+
+        template<>
+        AZ::Quaternion CreateQuaternion<AZ::Matrix3x4>(const AZ::Matrix3x4& matrix)
+        {
+            return AZ::Quaternion::CreateFromMatrix3x4(matrix);
+        }
+
+        template<>
+        AZ::Quaternion CreateQuaternion<AZ::Matrix4x4>(const AZ::Matrix4x4& matrix)
+        {
+            return AZ::Quaternion::CreateFromMatrix4x4(matrix);
+        }
+
+        template<typename MatrixType>
+        void AddRotation(rapidjson::Value& value, const MatrixType& matrix, rapidjson::Document::AllocatorType& allocator)
+        {
+            AZ::Quaternion rotation = CreateQuaternion<MatrixType>(matrix);
+            const auto degrees = rotation.GetEulerDegrees();
+            value.AddMember("yaw", degrees.GetX(), allocator);
+            value.AddMember("pitch", degrees.GetY(), allocator);
+            value.AddMember("roll", degrees.GetZ(), allocator);
+        }
+
+        void AddScale(rapidjson::Value& value, float scale, rapidjson::Document::AllocatorType& allocator)
+        {
+            value.AddMember("scale", scale, allocator);
+        }
+
+        void AddTranslation(rapidjson::Value& value, const AZ::Vector3& translation, rapidjson::Document::AllocatorType& allocator)
+        {
+            value.AddMember("x", translation.GetX(), allocator);
+            value.AddMember("y", translation.GetY(), allocator);
+            value.AddMember("z", translation.GetZ(), allocator);
+        }
+
+        template <typename MatrixType>
+        void AddData(rapidjson::Value& value, const MatrixType& matrix, rapidjson::Document::AllocatorType& allocator);
+
+        template <>
+        void AddData(rapidjson::Value& value, const AZ::Matrix3x3& matrix, rapidjson::Document::AllocatorType& allocator)
+        {
+            AddScale(value, matrix.RetrieveScale().GetX(), allocator);
+            AddRotation(value, matrix, allocator);
+        }
+
+        template <>
+        void AddData(rapidjson::Value& value, const AZ::Matrix3x4& matrix, rapidjson::Document::AllocatorType& allocator)
+        {
+            AddScale(value, matrix.RetrieveScale().GetX(), allocator);
+            AddTranslation(value, matrix.GetTranslation(), allocator);
+            AddRotation(value, matrix, allocator);
+        }
+
+        template <>
+        void AddData(rapidjson::Value& value, const AZ::Matrix4x4& matrix, rapidjson::Document::AllocatorType& allocator)
+        {
+            AddScale(value, matrix.RetrieveScale().GetX(), allocator);
+            AddTranslation(value, matrix.GetTranslation(), allocator);
+            AddRotation(value, matrix, allocator);
+        }
+    };
+
+    template<typename MatrixType, size_t RowCount, size_t ColumnCount, typename Serializer>
+    class MathMatrixSerializerTestDescription :
+        public JsonSerializerConformityTestDescriptor<MatrixType>
+    {
+    public:
+        AZStd::shared_ptr<AZ::BaseJsonSerializer> CreateSerializer() override
+        {
+            return AZStd::make_shared<Serializer>();
+        }
+
+        AZStd::shared_ptr<MatrixType> CreateDefaultInstance() override
+        {
+            return AZStd::make_shared<MatrixType>(MatrixType::CreateIdentity());
+        }
+
+        AZStd::shared_ptr<MatrixType> CreateFullySetInstance() override
+        {
+            auto angles = AZ::Vector3 { 0.0f, 0.0f, 0.0f };
+            auto scale = 10.0f;
+            auto translation = AZ::Vector3{ 10.0f, 20.0f, 30.0f };
+            auto matrix = DataHelper::BuildMatrix<MatrixType>(angles, scale, translation);
+            return AZStd::make_shared<MatrixType>(matrix);
+        }
+
+        AZStd::string_view GetJsonForFullySetInstance() override
+        {
+            if constexpr (RowCount * ColumnCount == 9)
+            {
+                return "{\"roll\":0.0,\"pitch\":0.0,\"yaw\":0.0,\"scale\":10.0}";
+            }
+            else if constexpr (RowCount * ColumnCount == 12)
+            {
+                return "{\"roll\":0.0,\"pitch\":0.0,\"yaw\":0.0,\"scale\":10.0,\"x\":10.0,\"y\":20.0,\"z\":30.0}";
+            }
+            else if constexpr (RowCount * ColumnCount == 16)
+            {
+                return "{\"roll\":0.0,\"pitch\":0.0,\"yaw\":0.0,\"scale\":10.0,\"x\":10.0,\"y\":20.0,\"z\":30.0}";
+            }
+            else
+            {
+                static_assert((RowCount >= 3 && RowCount <= 4) && (ColumnCount >= 3 && ColumnCount <= 4),
+                    "Only matrix 3x3, 3x4 or 4x4 are supported by this test.");
+            }
+            return "{}";
+        }
+
+        void ConfigureFeatures(JsonSerializerConformityTestDescriptorFeatures& features) override
+        {
+            features.EnableJsonType(rapidjson::kArrayType);
+            features.EnableJsonType(rapidjson::kObjectType);
+            features.m_fixedSizeArray = true;
+            features.m_supportsPartialInitialization = false;
+            features.m_supportsInjection = false;
+        }
+
+        bool AreEqual(const MatrixType& lhs, const MatrixType& rhs) override
+        {
+            for (int r = 0; r < RowCount; ++r)
+            {
+                for (int c = 0; c < ColumnCount; ++c)
+                {
+                    if (!AZ::IsClose(lhs.GetElement(r, c), rhs.GetElement(r, c), AZ::Constants::Tolerance))
+                    {
+                        return false;
+                    }
+                }
+            }
+            return true;
+        }
+    };
+
+    using MathMatrixSerializerConformityTestTypes = ::testing::Types<
+        MathMatrixSerializerTestDescription<AZ::Matrix3x3, 3, 3, AZ::JsonMatrix3x3Serializer>,
+        MathMatrixSerializerTestDescription<AZ::Matrix3x4, 3, 4, AZ::JsonMatrix3x4Serializer>,
+        MathMatrixSerializerTestDescription<AZ::Matrix4x4, 4, 4, AZ::JsonMatrix4x4Serializer>
+    >;
+    INSTANTIATE_TYPED_TEST_CASE_P(JsonMathMatrixSerializer, JsonSerializerConformityTests, MathMatrixSerializerConformityTestTypes);
+
+    template<typename T>
+    class JsonMathMatrixSerializerTests
+        : public BaseJsonSerializerFixture
+    {
+    public:
+        using Descriptor = T;
+
+        void SetUp() override
+        {
+            BaseJsonSerializerFixture::SetUp();
+            m_serializer = AZStd::make_unique<typename T::Serializer>();
+        }
+
+        void TearDown() override
+        {
+            m_serializer.reset();
+            BaseJsonSerializerFixture::TearDown();
+        }
+
+    protected:
+        AZStd::unique_ptr<typename T::Serializer> m_serializer;
+    };
+
+    struct Matrix3x3Descriptor
+    {
+        using MatrixType = AZ::Matrix3x3;
+        using Serializer = AZ::JsonMatrix3x3Serializer;
+        constexpr static size_t RowCount = 3;
+        constexpr static size_t ColumnCount = 3;
+        constexpr static size_t ElementCount = RowCount * ColumnCount;
+        constexpr static bool HasTranslation = false;
+    };
+
+    struct Matrix3x4Descriptor
+    {
+        using MatrixType = AZ::Matrix3x4;
+        using Serializer = AZ::JsonMatrix3x4Serializer;
+        constexpr static size_t RowCount = 3;
+        constexpr static size_t ColumnCount = 4;
+        constexpr static size_t ElementCount = RowCount * ColumnCount;
+        constexpr static bool HasTranslation = true;
+    };
+
+    struct Matrix4x4Descriptor
+    {
+        using MatrixType = AZ::Matrix4x4;
+        using Serializer = AZ::JsonMatrix4x4Serializer;
+        constexpr static size_t RowCount = 4;
+        constexpr static size_t ColumnCount = 4;
+        constexpr static size_t ElementCount = RowCount * ColumnCount;
+        constexpr static bool HasTranslation = true;
+    };
+
+    using JsonMathMatrixSerializerTypes = ::testing::Types <
+        Matrix3x3Descriptor, Matrix3x4Descriptor, Matrix4x4Descriptor>;
+    TYPED_TEST_CASE(JsonMathMatrixSerializerTests, JsonMathMatrixSerializerTypes);
+
+    // Load array tests
+
+    TYPED_TEST(JsonMathMatrixSerializerTests, Load_Array_ReturnsConvertAndLoadsMatrix)
+    {
+        using namespace AZ::JsonSerializationResult;
+
+        rapidjson::Value& arrayValue = this->m_jsonDocument->SetArray();
+        for (size_t i = 0; i < JsonMathMatrixSerializerTests<TypeParam>::Descriptor::ElementCount; ++i)
+        {
+            arrayValue.PushBack(static_cast<float>(i + 1), this->m_jsonDocument->GetAllocator());
+        }
+
+        auto output = JsonMathMatrixSerializerTests<TypeParam>::Descriptor::MatrixType::CreateZero();
+        ResultCode result = this->m_serializer->Load(
+            &output,
+            azrtti_typeid<typename JsonMathMatrixSerializerTests<TypeParam>::Descriptor::MatrixType>(),
+            *this->m_jsonDocument,
+            *this->m_jsonDeserializationContext);
+        ASSERT_EQ(Outcomes::Success, result.GetOutcome());
+        
+        for (int r = 0; r < JsonMathMatrixSerializerTests<TypeParam>::Descriptor::RowCount; ++r)
+        {
+            for (int c = 0; c < JsonMathMatrixSerializerTests<TypeParam>::Descriptor::ColumnCount; ++c)
+            {
+                auto testValue = static_cast<float>((r * JsonMathMatrixSerializerTests<TypeParam>::Descriptor::ColumnCount) + c + 1);
+                EXPECT_FLOAT_EQ(testValue, output.GetElement(r, c));
+            }
+        }
+    }
+
+    TYPED_TEST(JsonMathMatrixSerializerTests, Load_InvalidEntries_ReturnsUnsupportedAndLeavesMatrixUntouched)
+    {
+        using namespace AZ::JsonSerializationResult;
+
+        rapidjson::Value& arrayValue = this->m_jsonDocument->SetArray();
+        for (size_t i = 0; i < JsonMathMatrixSerializerTests<TypeParam>::Descriptor::ElementCount; ++i)
+        {
+            if (i == 1)
+            {
+                arrayValue.PushBack(rapidjson::StringRef("Invalid"), this->m_jsonDocument->GetAllocator());
+            }
+            else
+            {
+                arrayValue.PushBack(static_cast<float>(i + 1), this->m_jsonDocument->GetAllocator());
+            }
+        }
+
+        auto output = JsonMathMatrixSerializerTests<TypeParam>::Descriptor::MatrixType::CreateZero();
+        ResultCode result = this->m_serializer->Load(
+            &output,
+            azrtti_typeid<typename JsonMathMatrixSerializerTests<TypeParam>::Descriptor::MatrixType>(),
+            *this->m_jsonDocument,
+            *this->m_jsonDeserializationContext);
+        EXPECT_EQ(Outcomes::Unsupported, result.GetOutcome());
+
+        for (int r = 0; r < JsonMathMatrixSerializerTests<TypeParam>::Descriptor::RowCount; ++r)
+        {
+            for (int c = 0; c < JsonMathMatrixSerializerTests<TypeParam>::Descriptor::ColumnCount; ++c)
+            {
+                EXPECT_FLOAT_EQ(0.0f, output.GetElement(r, c));
+            }
+        }
+    }
+
+    TYPED_TEST(JsonMathMatrixSerializerTests, Load_FloatSerializerMissingForArray_ReturnsCatastrophic)
+    {
+        using namespace AZ::JsonSerializationResult;
+
+        this->m_jsonRegistrationContext->EnableRemoveReflection();
+        this->m_jsonRegistrationContext->template Serializer<AZ::JsonFloatSerializer>()->template HandlesType<float>();
+        this->m_jsonRegistrationContext->DisableRemoveReflection();
+
+        rapidjson::Value& arrayValue = this->m_jsonDocument->SetArray();
+        for (size_t i = 0; i < JsonMathMatrixSerializerTests<TypeParam>::Descriptor::ElementCount + 1; ++i)
+        {
+            arrayValue.PushBack(static_cast<float>(i + 1), this->m_jsonDocument->GetAllocator());
+        }
+
+        typename JsonMathMatrixSerializerTests<TypeParam>::Descriptor::MatrixType output;
+        ResultCode result = this->m_serializer->Load(
+            &output,
+            azrtti_typeid<typename JsonMathMatrixSerializerTests<TypeParam>::Descriptor::MatrixType>(),
+            *this->m_jsonDocument,
+            *this->m_jsonDeserializationContext);
+        EXPECT_EQ(Outcomes::Catastrophic, result.GetOutcome());
+
+        this->m_jsonRegistrationContext->template Serializer<AZ::JsonFloatSerializer>()->template HandlesType<float>();
+    }
+
+    // Load object tests
+    TYPED_TEST(JsonMathMatrixSerializerTests, Load_ValidObjectLowerCase_ReturnsSuccessAndLoadsMatrix)
+    {
+        using namespace AZ::JsonSerializationResult;
+
+        rapidjson::Value& objectValue = this->m_jsonDocument->SetObject();
+        auto input = JsonMathMatrixSerializerTests<TypeParam>::Descriptor::MatrixType::CreateIdentity();
+        DataHelper::AddData(objectValue, input, this->m_jsonDocument->GetAllocator());
+
+        auto output = JsonMathMatrixSerializerTests<TypeParam>::Descriptor::MatrixType::CreateZero();
+        ResultCode result = this->m_serializer->Load(
+            &output,
+            azrtti_typeid<typename JsonMathMatrixSerializerTests<TypeParam>::Descriptor::MatrixType>(),
+            *this->m_jsonDocument,
+            *this->m_jsonDeserializationContext);
+        ASSERT_EQ(Outcomes::DefaultsUsed, result.GetOutcome());
+        EXPECT_TRUE(input == output);
+    }
+
+    TYPED_TEST(JsonMathMatrixSerializerTests, Load_ValidObjectWithExtraFields_ReturnsPartialConvertAndLoadsMatrix)
+    {
+        using namespace AZ::JsonSerializationResult;
+
+        rapidjson::Value& objectValue = this->m_jsonDocument->SetObject();
+        auto input = JsonMathMatrixSerializerTests<TypeParam>::Descriptor::MatrixType::CreateIdentity();
+        DataHelper::AddScale(objectValue, input.RetrieveScale().GetX(), this->m_jsonDocument->GetAllocator());
+        DataHelper::AddRotation(objectValue, input, this->m_jsonDocument->GetAllocator());
+        objectValue.AddMember(rapidjson::StringRef("extra"), "no value", this->m_jsonDocument->GetAllocator());
+
+        auto output = JsonMathMatrixSerializerTests<TypeParam>::Descriptor::MatrixType::CreateZero();
+        ResultCode result = this->m_serializer->Load(
+            &output,
+            azrtti_typeid<typename JsonMathMatrixSerializerTests<TypeParam>::Descriptor::MatrixType>(),
+            *this->m_jsonDocument,
+            *this->m_jsonDeserializationContext);
+        ASSERT_EQ(Outcomes::DefaultsUsed, result.GetOutcome());
+        EXPECT_TRUE(input == output);
+    }
+
+    TYPED_TEST(JsonMathMatrixSerializerTests, SaveLoad_Identity_LoadsDefaultMatrixWithIdentity)
+    {
+        using namespace AZ::JsonSerializationResult;
+
+        auto defaultValue = JsonMathMatrixSerializerTests<TypeParam>::Descriptor::MatrixType::CreateIdentity();
+
+        rapidjson::Value& objectInput = this->m_jsonDocument->SetObject();
+        this->m_serializer->Store(
+            objectInput,
+            &defaultValue,
+            &defaultValue,
+            azrtti_typeid<typename JsonMathMatrixSerializerTests<TypeParam>::Descriptor::MatrixType>(),
+            *this->m_jsonSerializationContext);
+
+        rapidjson::StringBuffer buffer;
+        rapidjson::Writer<rapidjson::StringBuffer> writer(buffer);
+        objectInput.Accept(writer);
+
+        auto output = defaultValue;
+        ResultCode result = this->m_serializer->Load(
+            &output,
+            azrtti_typeid<typename JsonMathMatrixSerializerTests<TypeParam>::Descriptor::MatrixType>(),
+            *this->m_jsonDocument,
+            *this->m_jsonDeserializationContext);
+
+        EXPECT_TRUE(defaultValue == output);
+    }
+
+    TYPED_TEST(JsonMathMatrixSerializerTests, LoadSave_Zero_SavesAndLoadsIdentityMatrix)
+    {
+        using namespace AZ::JsonSerializationResult;
+
+        auto defaultValue = JsonMathMatrixSerializerTests<TypeParam>::Descriptor::MatrixType::CreateIdentity();
+        auto input = JsonMathMatrixSerializerTests<TypeParam>::Descriptor::MatrixType::CreateZero();
+
+        rapidjson::Value& objectInput = this->m_jsonDocument->SetObject();
+        this->m_serializer->Store(
+            objectInput,
+            &input,
+            &defaultValue,
+            azrtti_typeid<typename JsonMathMatrixSerializerTests<TypeParam>::Descriptor::MatrixType>(),
+            *this->m_jsonSerializationContext);
+
+        auto output = defaultValue;
+        ResultCode result = this->m_serializer->Load(
+            &output,
+            azrtti_typeid<typename JsonMathMatrixSerializerTests<TypeParam>::Descriptor::MatrixType>(),
+            *this->m_jsonDocument,
+            *this->m_jsonDeserializationContext);
+
+        ASSERT_EQ(Outcomes::Unsupported, result.GetOutcome());
+        EXPECT_TRUE(defaultValue == output);
+    }
+
+    TYPED_TEST(JsonMathMatrixSerializerTests, Load_InvalidFields_ReturnsUnsupportedAndLeavesMatrixUntouched)
+    {
+        using namespace AZ::JsonSerializationResult;
+        using Descriptor = typename JsonMathMatrixSerializerTests<TypeParam>::Descriptor;
+
+        const auto defaultValue = Descriptor::MatrixType::CreateIdentity();
+        rapidjson::Value& objectValue = this->m_jsonDocument->SetObject();
+        auto input = Descriptor::MatrixType::CreateIdentity();
+        DataHelper::AddData(objectValue, input, this->m_jsonDocument->GetAllocator());
+        objectValue["yaw"] = "Invalid";
+
+        auto output = Descriptor::MatrixType::CreateZero();
+        ResultCode result = this->m_serializer->Load(
+            &output,
+            azrtti_typeid<typename Descriptor::MatrixType>(),
+            *this->m_jsonDocument,
+            *this->m_jsonDeserializationContext);
+        ASSERT_EQ(Outcomes::Unsupported, result.GetOutcome());
+        EXPECT_TRUE(input == output);
+    }
+
+    TYPED_TEST(JsonMathMatrixSerializerTests, LoadSave_Arbitrary_SavesAndLoadsArbitraryMatrix)
+    {
+        using namespace AZ::JsonSerializationResult;
+        using Descriptor = typename JsonMathMatrixSerializerTests<TypeParam>::Descriptor;
+
+        auto defaultValue = Descriptor::MatrixType::CreateIdentity();
+        size_t elementCount = Descriptor::RowCount * Descriptor::ColumnCount;
+        auto input = DataHelper::CreateArbitraryMatrix<typename Descriptor::MatrixType>(elementCount);
+
+        rapidjson::Value& objectInput = this->m_jsonDocument->SetObject();
+        this->m_serializer->Store(
+            objectInput,
+            &input,
+            &defaultValue,
+            azrtti_typeid<typename Descriptor::MatrixType>(),
+            *this->m_jsonSerializationContext);
+
+        auto output = defaultValue;
+        ResultCode result = this->m_serializer->Load(
+            &output,
+            azrtti_typeid<typename Descriptor::MatrixType>(),
+            *this->m_jsonDocument,
+            *this->m_jsonDeserializationContext);
+
+        EXPECT_EQ(Processing::Completed, result.GetProcessing());
+
+        for (int r = 0; r < Descriptor::RowCount; ++r)
+        {
+            for (int c = 0; c < Descriptor::ColumnCount; ++c)
+            {
+                EXPECT_NEAR(input.GetElement(r, c), output.GetElement(r, c), AZ::Constants::Tolerance);
+            }
+        }
+    }
+
+} // namespace JsonSerializationTests

Code/Framework/AzCore/Tests/Serialization/Json/SmartPointerSerializerTests.cpp

@@ -32,7 +32,7 @@ namespace JsonSerializationTests
             return AZStd::make_shared<AZ::JsonSmartPointerSerializer>();
         }
 
-        AZStd::shared_ptr<SmartPointer> CreateDefaultInstance() override
+        AZStd::shared_ptr<SmartPointer> CreateDefaultConstructedInstance() override
         {
             return AZStd::make_shared<SmartPointer>();
         }
@@ -51,6 +51,13 @@ namespace JsonSerializationTests
         using SmartPointer = T<SimpleClass>;
         using Base = SmartPointerBaseTestDescription<SmartPointer>;
 
+        AZStd::shared_ptr<SmartPointer> CreateDefaultInstance() override
+        {
+            auto result = AZStd::make_shared<SmartPointer>();
+            *result = SmartPointer(aznew SimpleClass());
+            return result;
+        }
+
         AZStd::shared_ptr<SmartPointer> CreateFullySetInstance() override
         {
             auto result = AZStd::make_shared<SmartPointer>();
@@ -106,21 +113,6 @@ namespace JsonSerializationTests
         }
     };
 
-    template<template<typename...> class T>
-    class SmartPointerSimpleClassWithInstanceTestDescription :
-        public SmartPointerSimpleClassTestDescription<T>
-    {
-    public:
-        using SmartPointer = typename SmartPointerSimpleClassTestDescription<T>::SmartPointer;
-
-        AZStd::shared_ptr<SmartPointer> CreateDefaultInstance() override
-        {
-            auto result = AZStd::make_shared<SmartPointer>();
-            *result = SmartPointer(aznew SimpleClass());
-            return result;
-        }
-    };
-
     template<template<typename...> class T>
     class SmartPointerSimpleDerivedClassTestDescription :
         public SmartPointerBaseTestDescription<T<BaseClass>>
@@ -129,6 +121,13 @@ namespace JsonSerializationTests
         using SmartPointer = T<BaseClass>;
         using Base = SmartPointerBaseTestDescription<SmartPointer>;
 
+        AZStd::shared_ptr<SmartPointer> CreateDefaultInstance() override
+        {
+            auto result = AZStd::make_shared<SmartPointer>();
+            *result = SmartPointer(aznew BaseClass());
+            return result;
+        }
+
         AZStd::shared_ptr<SmartPointer> CreateFullySetInstance() override
         {
             auto* instance = aznew SimpleInheritence();
@@ -234,13 +233,19 @@ namespace JsonSerializationTests
     public:
         using SmartPointer = typename SmartPointerSimpleDerivedClassTestDescription<T>::SmartPointer;
 
-        AZStd::shared_ptr<SmartPointer> CreateDefaultInstance() override
+        // This test is specific for derived classes being used as a default value.
+        AZStd::shared_ptr<SmartPointer> CreateDefaultConstructedInstance() override
         {
             auto result = AZStd::make_shared<SmartPointer>();
             *result = SmartPointer(aznew SimpleInheritence());
             return result;
         }
 
+        AZStd::shared_ptr<SmartPointer> CreateDefaultInstance() override
+        {
+            return CreateDefaultConstructedInstance();
+        }
+
         AZStd::string_view GetJsonForPartialDefaultInstance() override
         {
             return R"(
@@ -272,6 +277,13 @@ namespace JsonSerializationTests
         using SmartPointer = T<BaseClass2>;
         using Base = SmartPointerBaseTestDescription<SmartPointer>;
 
+        AZStd::shared_ptr<SmartPointer> CreateDefaultInstance() override
+        {
+            auto result = AZStd::make_shared<SmartPointer>();
+            *result = SmartPointer(aznew BaseClass2());
+            return result;
+        }
+
         AZStd::shared_ptr<SmartPointer> CreateFullySetInstance() override
         {
             auto* instance = aznew MultipleInheritence();
@@ -385,13 +397,19 @@ namespace JsonSerializationTests
     public:
         using SmartPointer = typename SmartPointerComplexDerivedClassTestDescription<T>::SmartPointer;
 
-        AZStd::shared_ptr<SmartPointer> CreateDefaultInstance() override
+        // This test is specific for derived classes being used as a default value.
+        AZStd::shared_ptr<SmartPointer> CreateDefaultConstructedInstance() override
         {
             auto result = AZStd::make_shared<SmartPointer>();
             *result = SmartPointer(aznew MultipleInheritence());
             return result;
         }
 
+        AZStd::shared_ptr<SmartPointer> CreateDefaultInstance() override
+        {
+            return CreateDefaultConstructedInstance();
+        }
+
         AZStd::string_view GetJsonForPartialDefaultInstance() override
         {
             return R"(
@@ -424,9 +442,6 @@ namespace JsonSerializationTests
         SmartPointerSimpleClassTestDescription<AZStd::unique_ptr>,
         SmartPointerSimpleClassTestDescription<AZStd::shared_ptr>,
         SmartPointerSimpleClassTestDescription<AZStd::intrusive_ptr>,
-        SmartPointerSimpleClassWithInstanceTestDescription<AZStd::unique_ptr>,
-        SmartPointerSimpleClassWithInstanceTestDescription<AZStd::shared_ptr>,
-        SmartPointerSimpleClassWithInstanceTestDescription<AZStd::intrusive_ptr>,
         // Simple derived class, include single inheritance.
         SmartPointerSimpleDerivedClassTestDescription<AZStd::unique_ptr>,
         SmartPointerSimpleDerivedClassTestDescription<AZStd::shared_ptr>,
@@ -551,6 +566,37 @@ namespace JsonSerializationTests
         EXPECT_EQ(nullptr, *instance);
     }
 
+    TEST_F(JsonSmartPointerSerializerTests, Load_DefaultInstanceToNullptr_ReturnsSuccess)
+    {
+        namespace JSR = AZ::JsonSerializationResult;
+
+        SmartPointer instance;
+        AZStd::shared_ptr<SmartPointer> compare = m_description.CreateDefaultInstance();
+        m_jsonDocument->SetObject();
+
+        JSR::ResultCode result =
+            m_serializer.Load(&instance, azrtti_typeid<SmartPointer>(), *m_jsonDocument, *m_jsonDeserializationContext);
+
+        EXPECT_EQ(JSR::Processing::Completed, result.GetProcessing());
+        EXPECT_NE(nullptr, instance);
+        EXPECT_TRUE(m_description.AreEqual(instance, *compare));
+    }
+
+    TEST_F(JsonSmartPointerSerializerTests, Load_DefaultObjectDoesNotUpdateInstance_ReturnsSuccess)
+    {
+        namespace JSR = AZ::JsonSerializationResult;
+
+        AZStd::shared_ptr<SmartPointer> instance = m_description.CreateFullySetInstance();
+        AZStd::shared_ptr<SmartPointer> compare = m_description.CreateFullySetInstance();
+        m_jsonDocument->SetObject();
+
+        JSR::ResultCode result =
+            m_serializer.Load(instance.get(), azrtti_typeid<SmartPointer>(), *m_jsonDocument, *m_jsonDeserializationContext);
+
+        EXPECT_EQ(JSR::Processing::Completed, result.GetProcessing());
+        EXPECT_TRUE(m_description.AreEqual(*instance, *compare));
+    }
+
     TEST_F(JsonSmartPointerSerializerTests, Load_InstanceBeingReplacedWithDifferentType_ReturnsSuccess)
     {
         namespace JSR = AZ::JsonSerializationResult;
@@ -720,13 +766,66 @@ namespace JsonSerializationTests
         namespace JSR = AZ::JsonSerializationResult;
 
         AZStd::shared_ptr<SmartPointer> instance = m_description.CreateFullySetInstance();
-        SmartPointer nullPtr;
-        JSR::ResultCode result = m_serializer.Store(*m_jsonDocument, instance.get(), &nullPtr,
+        SmartPointer defaultInstance;
+        JSR::ResultCode result = m_serializer.Store(
+            *m_jsonDocument, instance.get(), &defaultInstance,
             azrtti_typeid<SmartPointer>(), *m_jsonSerializationContext);
 
         EXPECT_EQ(JSR::Outcomes::Success, result.GetOutcome());
     }
 
+    TEST_F(JsonSmartPointerSerializerTests, Store_ValuePointerIsNullPtr_ReturnsSuccessAndStoresNull)
+    {
+        namespace JSR = AZ::JsonSerializationResult;
+
+        SmartPointer instance;
+        AZStd::shared_ptr<SmartPointer> defaultInstance = m_description.CreateFullySetInstance();
+        JSR::ResultCode result = m_serializer.Store(
+            *m_jsonDocument, &instance, defaultInstance.get(), azrtti_typeid<SmartPointer>(), *m_jsonSerializationContext);
+
+        EXPECT_EQ(JSR::Outcomes::Success, result.GetOutcome());
+        EXPECT_TRUE(m_jsonDocument->IsNull());
+    }
+
+    TEST_F(JsonSmartPointerSerializerTests, Store_ValueAndDefaultPointersAreNullPtr_ReturnsSuccessAndStoresNull)
+    {
+        namespace JSR = AZ::JsonSerializationResult;
+
+        SmartPointer instance;
+        SmartPointer defaultInstance;
+        JSR::ResultCode result =
+            m_serializer.Store(*m_jsonDocument, &instance, &defaultInstance, azrtti_typeid<SmartPointer>(), *m_jsonSerializationContext);
+
+        EXPECT_EQ(JSR::Outcomes::DefaultsUsed, result.GetOutcome());
+        EXPECT_TRUE(m_jsonDocument->IsNull());
+    }
+
+    TEST_F(JsonSmartPointerSerializerTests, Store_ValueAndDefaultPointersAreBothDefault_ReturnsSuccess)
+    {
+        namespace JSR = AZ::JsonSerializationResult;
+
+        AZStd::shared_ptr<SmartPointer> instance = m_description.CreateDefaultInstance();
+        AZStd::shared_ptr<SmartPointer> defaultInstance = m_description.CreateDefaultInstance();
+        JSR::ResultCode result =
+            m_serializer.Store(*m_jsonDocument, instance.get(), defaultInstance.get(), azrtti_typeid<SmartPointer>(), *m_jsonSerializationContext);
+
+        EXPECT_EQ(JSR::Outcomes::DefaultsUsed, result.GetOutcome());
+        Expect_ExplicitDefault(*m_jsonDocument);
+    }
+
+    TEST_F(JsonSmartPointerSerializerTests, Store_ValueHasDefaultValuesAndDefaultHasNullPointer_ReturnsSuccess)
+    {
+        namespace JSR = AZ::JsonSerializationResult;
+
+        AZStd::shared_ptr<SmartPointer> instance = m_description.CreateDefaultInstance();
+        SmartPointer defaultInstance;
+        JSR::ResultCode result = m_serializer.Store(
+            *m_jsonDocument, instance.get(), &defaultInstance, azrtti_typeid<SmartPointer>(), *m_jsonSerializationContext);
+
+        EXPECT_EQ(JSR::Outcomes::DefaultsUsed, result.GetOutcome());
+        Expect_ExplicitDefault(*m_jsonDocument);
+    }
+
     TEST_F(JsonSmartPointerSerializerTests, Store_DefaultPointerIsOtherClass_CompletesButDoesNotReturnDefaults)
     {
         namespace JSR = AZ::JsonSerializationResult;
@@ -749,7 +848,7 @@ namespace JsonSerializationTests
         EXPECT_EQ(JSR::Processing::Completed, result.GetProcessing());
     }
 
-    TEST_F(JsonSmartPointerSerializerTests, Store_SaveAnClassThatIsNotReflected_ReturnsUnknown)
+    TEST_F(JsonSmartPointerSerializerTests, Store_ClassThatIsNotReflected_ReturnsUnknown)
     {
         namespace JSR = AZ::JsonSerializationResult;
 

Code/Framework/AzCore/Tests/azcoretests_files.cmake

@@ -111,6 +111,7 @@ set(FILES
     Serialization/Json/JsonSerializerMock.h
     Serialization/Json/MapSerializerTests.cpp
     Serialization/Json/MathVectorSerializerTests.cpp
+    Serialization/Json/MathMatrixSerializerTests.cpp
     Serialization/Json/SmartPointerSerializerTests.cpp
     Serialization/Json/StringSerializerTests.cpp
     Serialization/Json/TestCases.h

Code/Framework/AzFramework/AzFramework/Archive/ArchiveVars.h

@@ -51,7 +51,6 @@ namespace AZ::IO
             : ArchiveLocationPriority::ePakPriorityFileFirst }; // Which file location to favor (loose vs. pak files)
         int nMessageInvalidFileAccess{};
         int nLogInvalidFileAccess{ IsReleaseConfig ? 0 : 1 };
-        int nLoadFrontendShaderCache{ FRONTEND_SHADER_CACHE_DEFAULT };
         int nDisableNonLevelRelatedPaks{ 1 };
         int nWarnOnPakAccessFails{ 1 }; // Whether to treat failed pak access as a warning or log message
         int nSetLogLevel{ 3 };

Code/Framework/AzFramework/AzFramework/Components/NonUniformScaleComponent.cpp

@@ -36,6 +36,8 @@ namespace AzFramework
 
     void NonUniformScaleComponent::GetIncompatibleServices(AZ::ComponentDescriptor::DependencyArrayType& incompatible)
     {
+        incompatible.push_back(AZ_CRC_CE("NonUniformScaleService"));
+
         incompatible.push_back(AZ_CRC_CE("DebugDrawObbService"));
         incompatible.push_back(AZ_CRC_CE("DebugDrawService"));
         incompatible.push_back(AZ_CRC_CE("EMotionFXActorService"));

Code/Framework/AzFramework/AzFramework/Components/TransformComponent.cpp

@@ -11,10 +11,12 @@
 */
 
 #include <AzFramework/Components/TransformComponent.h>
+#include <AzFramework/Visibility/EntityBoundsUnionBus.h>
 #include <AzCore/Serialization/EditContext.h>
 #include <AzCore/RTTI/BehaviorContext.h>
 #include <AzCore/Component/Entity.h>
 #include <AzCore/Component/ComponentApplicationBus.h>
+#include <AzCore/Interface/Interface.h>
 #include <AzCore/Math/Transform.h>
 #include <AzCore/Math/Quaternion.h>
 
@@ -693,9 +695,8 @@ namespace AzFramework
             parentId = handler->GetParentId();
         }
 #endif
-
-        AZ::Entity* parentEntity = nullptr;
-        EBUS_EVENT_RESULT(parentEntity, AZ::ComponentApplicationBus, FindEntity, parentEntityId);
+        AZ::ComponentApplicationRequests* componentApplication = AZ::Interface<AZ::ComponentApplicationRequests>::Get();
+        AZ::Entity* parentEntity = (componentApplication != nullptr) ? componentApplication->FindEntity(parentEntityId) : nullptr;
         AZ_Assert(parentEntity, "We expect to have a parent entity associated with the provided parent's entity Id.");
         if (parentEntity)
         {
@@ -744,8 +745,8 @@ namespace AzFramework
         m_parentId = parentId;
         if (m_parentId.IsValid())
         {
-            AZ::Entity* parentEntity = nullptr;
-            AZ::ComponentApplicationBus::BroadcastResult(parentEntity, &AZ::ComponentApplicationBus::Events::FindEntity, m_parentId);
+            AZ::ComponentApplicationRequests* componentApplication = AZ::Interface<AZ::ComponentApplicationRequests>::Get();
+            AZ::Entity* parentEntity = (componentApplication != nullptr) ? componentApplication->FindEntity(m_parentId) : nullptr;
             m_parentActive = parentEntity && (parentEntity->GetState() == AZ::Entity::State::Active);
 
             m_onNewParentKeepWorldTM = isKeepWorldTM;
@@ -832,6 +833,12 @@ namespace AzFramework
 
         EBUS_EVENT_PTR(m_notificationBus, AZ::TransformNotificationBus, OnTransformChanged, m_localTM, m_worldTM);
         m_transformChangedEvent.Signal(m_localTM, m_worldTM);
+
+        AzFramework::IEntityBoundsUnion* boundsUnion = AZ::Interface<AzFramework::IEntityBoundsUnion>::Get();
+        if (boundsUnion != nullptr)
+        {
+            boundsUnion->OnTransformUpdated(GetEntity());
+        }
     }
 
     void TransformComponent::ComputeWorldTM()

Code/Framework/AzFramework/AzFramework/Entity/EntityDebugDisplayBus.h

@@ -34,6 +34,8 @@ class ITexture;
 
 namespace AzFramework
 {
+    inline constexpr AZ::s32 g_defaultSceneEntityDebugDisplayId = AZ_CRC_CE("MainViewportEntityDebugDisplayId"); // default id to draw to all viewports in the default scene
+
     /// DebugDisplayRequests provides a debug draw api to be used by components and viewport features.
     class DebugDisplayRequests
         : public AZ::EBusTraits

Code/Framework/AzFramework/AzFramework/Entity/GameEntityContextComponent.cpp

@@ -93,6 +93,8 @@ namespace AzFramework
         InitContext();
 
         GameEntityContextRequestBus::Handler::BusConnect();
+
+        m_entityVisibilityBoundsUnionSystem.Connect();
     }
 
     //=========================================================================
@@ -100,6 +102,8 @@ namespace AzFramework
     //=========================================================================
     void GameEntityContextComponent::Deactivate()
     {
+        m_entityVisibilityBoundsUnionSystem.Disconnect();
+
         GameEntityContextRequestBus::Handler::BusDisconnect();
 
         DestroyContext();

Code/Framework/AzFramework/AzFramework/Entity/GameEntityContextComponent.h

@@ -18,6 +18,7 @@
 #include <AzCore/Component/Component.h>
 #include <AzFramework/Entity/GameEntityContextBus.h>
 #include <AzFramework/Entity/SliceGameEntityOwnershipService.h>
+#include <AzFramework/Visibility/EntityVisibilityBoundsUnionSystem.h>
 
 #include "EntityContext.h"
 
@@ -91,6 +92,9 @@ namespace AzFramework
         {
             required.push_back(AZ_CRC("SliceSystemService", 0x1a5b7aad));
         }
+
+    private:
+        AzFramework::EntityVisibilityBoundsUnionSystem m_entityVisibilityBoundsUnionSystem;
     };
 } // namespace AzFramework
 

Code/Framework/AzFramework/AzFramework/Physics/Components/SimulatedBodyComponentBus.h

@@ -19,44 +19,29 @@
 
 namespace AzPhysics
 {
-    struct SimulatedBody;
-}
-
-namespace Physics
-{
-    //! Requests for generic physical world bodies
-    class WorldBodyRequests
+    //! Requests for physics simulated body components.
+    class SimulatedBodyComponentRequests
         : public AZ::ComponentBus
     {
     public:
         using MutexType = AZStd::recursive_mutex;
 
-        //! Enable physics for this body
+        //! Enable physics for this body.
         virtual void EnablePhysics() = 0;
-        //! Disable physics for this body
+        //! Disable physics for this body.
         virtual void DisablePhysics() = 0;
-        //! Retrieve whether physics is enabled for this body
+        //! Retrieve whether physics is enabled for this body.
         virtual bool IsPhysicsEnabled() const = 0;
 
-        //! Retrieves the AABB(aligned-axis bounding box) for this body
+        //! Retrieves the AABB(aligned-axis bounding box) for this body.
         virtual AZ::Aabb GetAabb() const = 0;
-        //! Retrieves current WorldBody* for this body. Note: Do not hold a reference to AzPhysics::SimulatedBody* as could be deleted 
-        virtual AzPhysics::SimulatedBody* GetWorldBody() = 0;
-
-        //! Perform a single-object raycast against this body
+        //! Get the Simulated Body Handle for this body.
+        virtual AzPhysics::SimulatedBodyHandle GetSimulatedBodyHandle() const = 0;
+        //! Retrieves current WorldBody* for this body.
+        //! @note Do not hold a reference to AzPhysics::SimulatedBody* as it could be deleted or moved.
+        virtual AzPhysics::SimulatedBody* GetSimulatedBody() = 0;
+        //! Perform a single-object raycast against this body.
         virtual AzPhysics::SceneQueryHit RayCast(const AzPhysics::RayCastRequest& request) = 0;
     };
-    using WorldBodyRequestBus = AZ::EBus<WorldBodyRequests>;
-
-    //! Notifications for generic physical world bodies
-    class WorldBodyNotifications
-        : public AZ::ComponentBus
-    {
-    public:
-        //! Notification for physics enabled
-        virtual void OnPhysicsEnabled() = 0;
-        //! Notification for physics disabled
-        virtual void OnPhysicsDisabled() = 0;
-    };
-    using WorldBodyNotificationBus = AZ::EBus<WorldBodyNotifications>;
+    using SimulatedBodyComponentRequestsBus = AZ::EBus<SimulatedBodyComponentRequests>;
 }

Code/Framework/AzFramework/AzFramework/Physics/ShapeConfiguration.cpp

@@ -48,6 +48,9 @@ namespace Physics
     {
         if (auto serializeContext = azrtti_cast<AZ::SerializeContext*>(context))
         {
+            serializeContext
+                ->RegisterGenericType<AZStd::shared_ptr<SphereShapeConfiguration>>();
+
             serializeContext->Class<SphereShapeConfiguration, ShapeConfiguration>()
                 ->Version(1)
                 ->Field("Radius", &SphereShapeConfiguration::m_radius)
@@ -76,6 +79,9 @@ namespace Physics
     {
         if (auto serializeContext = azrtti_cast<AZ::SerializeContext*>(context))
         {
+            serializeContext
+                ->RegisterGenericType<AZStd::shared_ptr<BoxShapeConfiguration>>();
+
             serializeContext->Class<BoxShapeConfiguration, ShapeConfiguration>()
                 ->Version(1)
                 ->Field("Configuration", &BoxShapeConfiguration::m_dimensions)
@@ -104,6 +110,9 @@ namespace Physics
     {
         if (auto serializeContext = azrtti_cast<AZ::SerializeContext*>(context))
         {
+            serializeContext
+                ->RegisterGenericType<AZStd::shared_ptr<CapsuleShapeConfiguration>>();
+
             serializeContext->Class<CapsuleShapeConfiguration, ShapeConfiguration>()
                 ->Version(1)
                 ->Field("Height", &CapsuleShapeConfiguration::m_height)
@@ -153,6 +162,9 @@ namespace Physics
     {
         if (auto serializeContext = azrtti_cast<AZ::SerializeContext*>(context))
         {
+            serializeContext
+                ->RegisterGenericType<AZStd::shared_ptr<PhysicsAssetShapeConfiguration>>();
+
             serializeContext->Class<PhysicsAssetShapeConfiguration, ShapeConfiguration>()
                 ->Version(1)
                 ->Field("PhysicsAsset", &PhysicsAssetShapeConfiguration::m_asset)
@@ -185,6 +197,9 @@ namespace Physics
     {
         if (auto serializeContext = azrtti_cast<AZ::SerializeContext*>(context))
         {
+            serializeContext
+                ->RegisterGenericType<AZStd::shared_ptr<NativeShapeConfiguration>>();
+
             serializeContext->Class<NativeShapeConfiguration, ShapeConfiguration>()
                 ->Version(1)
                 ->Field("Scale", &NativeShapeConfiguration::m_nativeShapeScale)
@@ -208,6 +223,9 @@ namespace Physics
     {
         if (auto serializeContext = azrtti_cast<AZ::SerializeContext*>(context))
         {
+            serializeContext
+                ->RegisterGenericType<AZStd::shared_ptr<CookedMeshShapeConfiguration>>();
+
             serializeContext->Class<CookedMeshShapeConfiguration, ShapeConfiguration>()
                 ->Version(1)
                 ->Field("CookedData", &CookedMeshShapeConfiguration::m_cookedData)

Code/Framework/AzFramework/AzFramework/Physics/Utils.cpp

@@ -21,7 +21,7 @@
 #include <AzFramework/Physics/ShapeConfiguration.h>
 #include <AzCore/Serialization/EditContext.h>
 #include <AzFramework/Physics/CollisionBus.h>
-#include <AzFramework/Physics/WorldBodyBus.h>
+#include <AzFramework/Physics/Components/SimulatedBodyComponentBus.h>
 #include <AzFramework/Physics/WindBus.h>
 #include <AzFramework/Physics/PhysicsSystem.h>
 #include <AzFramework/Physics/Collision/CollisionEvents.h>
@@ -39,19 +39,19 @@ namespace Physics
 {
     namespace ReflectionUtils
     {
-        void ReflectWorldBodyBus(AZ::ReflectContext* context)
+        void ReflectSimulatedBodyComponentRequestsBus(AZ::ReflectContext* context)
         {
             if (auto* behaviorContext = azrtti_cast<AZ::BehaviorContext*>(context))
             {
-                behaviorContext->EBus<Physics::WorldBodyRequestBus>("WorldBodyRequestBus")
+                behaviorContext->EBus<AzPhysics::SimulatedBodyComponentRequestsBus>("SimulatedBodyComponentRequestBus")
                     ->Attribute(AZ::Script::Attributes::Scope, AZ::Script::Attributes::ScopeFlags::Common)
                     ->Attribute(AZ::Script::Attributes::Module, "physics")
                     ->Attribute(AZ::Script::Attributes::Category, "PhysX")
-                    ->Event("EnablePhysics", &WorldBodyRequests::EnablePhysics)
-                    ->Event("DisablePhysics", &WorldBodyRequests::DisablePhysics)
-                    ->Event("IsPhysicsEnabled", &WorldBodyRequests::IsPhysicsEnabled)
-                    ->Event("GetAabb", &WorldBodyRequests::GetAabb)
-                    ->Event("RayCast", &WorldBodyRequests::RayCast)
+                    ->Event("EnablePhysics", &AzPhysics::SimulatedBodyComponentRequests::EnablePhysics)
+                    ->Event("DisablePhysics", &AzPhysics::SimulatedBodyComponentRequests::DisablePhysics)
+                    ->Event("IsPhysicsEnabled", &AzPhysics::SimulatedBodyComponentRequests::IsPhysicsEnabled)
+                    ->Event("GetAabb", &AzPhysics::SimulatedBodyComponentRequests::GetAabb)
+                    ->Event("RayCast", &AzPhysics::SimulatedBodyComponentRequests::RayCast)
                     ;
             }
         }
@@ -131,7 +131,7 @@ namespace Physics
             AnimationConfiguration::Reflect(context);
             CharacterConfiguration::Reflect(context);
             AzPhysics::SimulatedBody::Reflect(context);
-            ReflectWorldBodyBus(context);
+            ReflectSimulatedBodyComponentRequestsBus(context);
             CollisionFilteringRequests::Reflect(context);
             AzPhysics::SceneQuery::ReflectSceneQueryObjects(context);
             ReflectWindBus(context);

Code/Framework/AzFramework/AzFramework/ProjectManager/ProjectManager.cpp

@@ -137,7 +137,7 @@ namespace AzFramework::ProjectManager
             }
             AZ::IO::FixedMaxPath pythonPath = engineRootPath / "python";
             pythonPath /= AZ_TRAIT_AZFRAMEWORK_PYTHON_SHELL;
-            auto cmdPath = AZ::IO::FixedMaxPathString::format("%s %s%s --executable_path=%s --parent_pid=%" PRId64, pythonPath.Native().c_str(),
+            auto cmdPath = AZ::IO::FixedMaxPathString::format("%s %s%s --executable_path=%s --parent_pid=%" PRIu32, pythonPath.Native().c_str(),
                 debugOption.c_str(), (projectManagerPath / projectsScript).c_str(), executablePath.c_str(), AZ::Platform::GetCurrentProcessId());
 
             AzFramework::ProcessLauncher::ProcessLaunchInfo processLaunchInfo;

Code/Framework/AzFramework/AzFramework/Render/Intersector.cpp

@@ -139,7 +139,8 @@ namespace AzFramework
                     "Implementers of IntersectionRequestBus must also implement BoundsRequestBus to ensure valid "
                     "bounds are returned");
 
-                m_registeredEntities.Update({ entityId, CalculateEntityWorldBoundsUnion(entityId) });
+                AZ::Entity* entity = AZ::Interface<AZ::ComponentApplicationRequests>::Get()->FindEntity(entityId);
+                m_registeredEntities.Update({ entityId, CalculateEntityWorldBoundsUnion(entity) });
             }
 
             m_dirtyEntities.clear();

Code/Framework/AzFramework/AzFramework/Scene/Scene.inl

@@ -51,7 +51,7 @@ namespace AzFramework
     }
 
     template<typename T>
-    bool Scene::UnsetSubsystem(const T& system)
+    bool Scene::UnsetSubsystem([[maybe_unused]] const T& system)
     {
         const AZ::TypeId& targetType = azrtti_typeid<T>();
         const size_t systemKeysCount = m_systemKeys.size();

Code/Framework/AzFramework/AzFramework/Spawnable/SpawnableEntitiesInterface.h

@@ -148,6 +148,12 @@ namespace AzFramework
         //! Blocks until all operations made on the provided ticket before the barrier call have completed.
         virtual void Barrier(EntitySpawnTicket& ticket, BarrierCallback completionCallback) = 0;
 
+        //! Register a handler for OnSpawned events.
+        virtual void AddOnSpawnedHandler(AZ::Event<AZ::Data::Asset<Spawnable>>::Handler& handler) = 0;
+
+        //! Register a handler for OnDespawned events.
+        virtual void AddOnDespawnedHandler(AZ::Event<AZ::Data::Asset<Spawnable>>::Handler& handler) = 0;
+
     protected:
         [[nodiscard]] virtual void* CreateTicket(AZ::Data::Asset<Spawnable>&& spawnable) = 0;
         virtual void DestroyTicket(void* ticket) = 0;

Code/Framework/AzFramework/AzFramework/Spawnable/SpawnableEntitiesManager.cpp

@@ -114,6 +114,16 @@ namespace AzFramework
         }
     }
 
+    void SpawnableEntitiesManager::AddOnSpawnedHandler(AZ::Event<AZ::Data::Asset<Spawnable>>::Handler& handler)
+    {
+        handler.Connect(m_onSpawnedEvent);
+    }
+
+    void SpawnableEntitiesManager::AddOnDespawnedHandler(AZ::Event<AZ::Data::Asset<Spawnable>>::Handler& handler)
+    {
+        handler.Connect(m_onDespawnedEvent);
+    }
+
     auto SpawnableEntitiesManager::ProcessQueue() -> CommandQueueStatus
     {
         AZStd::queue<Requests> pendingRequestQueue;
@@ -223,6 +233,8 @@ namespace AzFramework
                     ticket.m_spawnedEntities.begin() + spawnedEntitiesCount, ticket.m_spawnedEntities.end()));
             }
 
+            m_onSpawnedEvent.Signal(ticket.m_spawnable);
+
             ticket.m_currentTicketId++;
             return true;
         }
@@ -257,6 +269,8 @@ namespace AzFramework
                     ticket.m_spawnedEntities.begin() + spawnedEntitiesCount, ticket.m_spawnedEntities.end()));
             }
 
+            m_onSpawnedEvent.Signal(ticket.m_spawnable);
+
             ticket.m_currentTicketId++;
             return true;
         }
@@ -289,6 +303,8 @@ namespace AzFramework
                 request.m_completionCallback(*request.m_ticket);
             }
 
+            m_onDespawnedEvent.Signal(ticket.m_spawnable);
+
             ticket.m_currentTicketId++;
             return true;
         }
@@ -315,6 +331,8 @@ namespace AzFramework
                         &GameEntityContextRequestBus::Events::DestroyGameEntityAndDescendants, entity->GetId());
                 }
             }
+
+            m_onDespawnedEvent.Signal(ticket.m_spawnable);
             
             // Rebuild the list of entities.
             ticket.m_spawnedEntities.clear();
@@ -350,6 +368,9 @@ namespace AzFramework
             }
 
             ticket.m_currentTicketId++;
+
+            m_onSpawnedEvent.Signal(ticket.m_spawnable);
+
             return true;
         }
         else

Code/Framework/AzFramework/AzFramework/Spawnable/SpawnableEntitiesManager.h

@@ -60,6 +60,9 @@ namespace AzFramework
 
         void Barrier(EntitySpawnTicket& spawnInfo, BarrierCallback completionCallback) override;
 
+        void AddOnSpawnedHandler(AZ::Event<AZ::Data::Asset<Spawnable>>::Handler& handler) override;
+        void AddOnDespawnedHandler(AZ::Event<AZ::Data::Asset<Spawnable>>::Handler& handler) override;
+
         //
         // The following function is thread safe but intended to be run from the main thread.
         //
@@ -156,5 +159,8 @@ namespace AzFramework
         AZStd::deque<Requests> m_delayedQueue; //!< Requests that were processed before, but couldn't be completed.
         AZStd::queue<Requests> m_pendingRequestQueue;
         AZStd::mutex m_pendingRequestQueueMutex;
+
+        AZ::Event<AZ::Data::Asset<Spawnable>> m_onSpawnedEvent;
+        AZ::Event<AZ::Data::Asset<Spawnable>> m_onDespawnedEvent;
     };
 } // namespace AzFramework

Code/Framework/AzFramework/AzFramework/Viewport/CameraInput.cpp

@@ -12,33 +12,173 @@
 
 #include "CameraInput.h"
 
+#include <AzCore/Console/IConsole.h>
 #include <AzCore/Math/MathUtils.h>
 #include <AzCore/Math/Plane.h>
+#include <AzFramework/Input/Devices/Keyboard/InputDeviceKeyboard.h>
 #include <AzFramework/Input/Devices/Mouse/InputDeviceMouse.h>
 #include <AzFramework/Windowing/WindowBus.h>
 
 namespace AzFramework
 {
-    void CameraSystem::HandleEvents(const InputEvent& event)
+    AZ_CVAR(
+        float, ed_cameraSystemDefaultPlaneHeight, 34.0f, nullptr, AZ::ConsoleFunctorFlags::Null,
+        "The default height of the ground plane to do intersection tests against when orbiting");
+    AZ_CVAR(float, ed_cameraSystemBoostMultiplier, 3.0f, nullptr, AZ::ConsoleFunctorFlags::Null, "");
+    AZ_CVAR(float, ed_cameraSystemTranslateSpeed, 10.0f, nullptr, AZ::ConsoleFunctorFlags::Null, "");
+    AZ_CVAR(float, ed_cameraSystemOrbitDollyScrollSpeed, 0.02f, nullptr, AZ::ConsoleFunctorFlags::Null, "");
+    AZ_CVAR(float, ed_cameraSystemOrbitDollyCursorSpeed, 0.01f, nullptr, AZ::ConsoleFunctorFlags::Null, "");
+    AZ_CVAR(float, ed_cameraSystemScrollTranslateSpeed, 0.02f, nullptr, AZ::ConsoleFunctorFlags::Null, "");
+    AZ_CVAR(float, ed_cameraSystemMaxOrbitDistance, 60.0f, nullptr, AZ::ConsoleFunctorFlags::Null, "");
+    AZ_CVAR(float, ed_cameraSystemLookSmoothness, 5.0f, nullptr, AZ::ConsoleFunctorFlags::Null, "");
+    AZ_CVAR(float, ed_cameraSystemTranslateSmoothness, 5.0f, nullptr, AZ::ConsoleFunctorFlags::Null, "");
+    AZ_CVAR(float, ed_cameraSystemRotateSpeed, 0.005f, nullptr, AZ::ConsoleFunctorFlags::Null, "");
+    AZ_CVAR(float, ed_cameraSystemPanSpeed, 0.01f, nullptr, AZ::ConsoleFunctorFlags::Null, "");
+    AZ_CVAR(bool, ed_cameraSystemPanInvertX, true, nullptr, AZ::ConsoleFunctorFlags::Null, "");
+    AZ_CVAR(bool, ed_cameraSystemPanInvertY, true, nullptr, AZ::ConsoleFunctorFlags::Null, "");
+    AZ_CVAR(float, ed_cameraSystemLookDeadzone, 2.0f, nullptr, AZ::ConsoleFunctorFlags::Null, "");
+
+    AZ_CVAR(
+        AZ::CVarFixedString, ed_cameraSystemTranslateForwardKey, "keyboard_key_alphanumeric_W", nullptr, AZ::ConsoleFunctorFlags::Null, "");
+    AZ_CVAR(
+        AZ::CVarFixedString, ed_cameraSystemTranslateBackwardKey, "keyboard_key_alphanumeric_S", nullptr, AZ::ConsoleFunctorFlags::Null,
+        "");
+    AZ_CVAR(
+        AZ::CVarFixedString, ed_cameraSystemTranslateLeftKey, "keyboard_key_alphanumeric_A", nullptr, AZ::ConsoleFunctorFlags::Null, "");
+    AZ_CVAR(
+        AZ::CVarFixedString, ed_cameraSystemTranslateRightKey, "keyboard_key_alphanumeric_D", nullptr, AZ::ConsoleFunctorFlags::Null, "");
+    AZ_CVAR(AZ::CVarFixedString, ed_cameraSystemTranslateUpKey, "keyboard_key_alphanumeric_E", nullptr, AZ::ConsoleFunctorFlags::Null, "");
+    AZ_CVAR(
+        AZ::CVarFixedString, ed_cameraSystemTranslateDownKey, "keyboard_key_alphanumeric_Q", nullptr, AZ::ConsoleFunctorFlags::Null, "");
+    AZ_CVAR(
+        AZ::CVarFixedString, ed_cameraSystemTranslateBoostKey, "keyboard_key_modifier_shift_l", nullptr, AZ::ConsoleFunctorFlags::Null, "");
+    AZ_CVAR(AZ::CVarFixedString, ed_cameraSystemOrbitKey, "keyboard_key_modifier_alt_l", nullptr, AZ::ConsoleFunctorFlags::Null, "");
+
+    AZ_CVAR(AZ::CVarFixedString, ed_cameraSystemFreeLookButton, "mouse_button_right", nullptr, AZ::ConsoleFunctorFlags::Null, "");
+    AZ_CVAR(AZ::CVarFixedString, ed_cameraSystemFreePanButton, "mouse_button_middle", nullptr, AZ::ConsoleFunctorFlags::Null, "");
+    AZ_CVAR(AZ::CVarFixedString, ed_cameraSystemOrbitLookButton, "mouse_button_left", nullptr, AZ::ConsoleFunctorFlags::Null, "");
+    AZ_CVAR(AZ::CVarFixedString, ed_cameraSystemOrbitDollyButton, "mouse_button_right", nullptr, AZ::ConsoleFunctorFlags::Null, "");
+    AZ_CVAR(AZ::CVarFixedString, ed_cameraSystemOrbitPanButton, "mouse_button_middle", nullptr, AZ::ConsoleFunctorFlags::Null, "");
+
+    static InputChannelId CameraTranslateForwardId;
+    static InputChannelId CameraTranslateBackwardId;
+    static InputChannelId CameraTranslateLeftId;
+    static InputChannelId CameraTranslateRightId;
+    static InputChannelId CameraTranslateDownId;
+    static InputChannelId CameraTranslateUpId;
+    static InputChannelId CameraTranslateBoostId;
+    static InputChannelId CameraOrbitId;
+
+    // externed elsewhere
+    InputChannelId CameraFreeLookButton;
+    InputChannelId CameraFreePanButton;
+    InputChannelId CameraOrbitLookButton;
+    InputChannelId CameraOrbitDollyButton;
+    InputChannelId CameraOrbitPanButton;
+
+    void ReloadCameraKeyBindings()
     {
-        if (const auto& cursor_motion = AZStd::get_if<CursorMotionEvent>(&event))
+        const AZ::CVarFixedString& forward = ed_cameraSystemTranslateForwardKey;
+        CameraTranslateForwardId = InputChannelId(forward.c_str());
+        const AZ::CVarFixedString& backward = ed_cameraSystemTranslateBackwardKey;
+        CameraTranslateBackwardId = InputChannelId(backward.c_str());
+        const AZ::CVarFixedString& left = ed_cameraSystemTranslateLeftKey;
+        CameraTranslateLeftId = InputChannelId(left.c_str());
+        const AZ::CVarFixedString& right = ed_cameraSystemTranslateRightKey;
+        CameraTranslateRightId = InputChannelId(right.c_str());
+        const AZ::CVarFixedString& down = ed_cameraSystemTranslateDownKey;
+        CameraTranslateDownId = InputChannelId(down.c_str());
+        const AZ::CVarFixedString& up = ed_cameraSystemTranslateUpKey;
+        CameraTranslateUpId = InputChannelId(up.c_str());
+        const AZ::CVarFixedString& boost = ed_cameraSystemTranslateBoostKey;
+        CameraTranslateBoostId = InputChannelId(boost.c_str());
+        const AZ::CVarFixedString& orbit = ed_cameraSystemOrbitKey;
+        CameraOrbitId = InputChannelId(orbit.c_str());
+        const AZ::CVarFixedString& freeLook = ed_cameraSystemFreeLookButton;
+        CameraFreeLookButton = InputChannelId(freeLook.c_str());
+        const AZ::CVarFixedString& freePan = ed_cameraSystemFreePanButton;
+        CameraFreePanButton = InputChannelId(freePan.c_str());
+        const AZ::CVarFixedString& orbitLook = ed_cameraSystemOrbitLookButton;
+        CameraOrbitLookButton = InputChannelId(orbitLook.c_str());
+        const AZ::CVarFixedString& orbitDolly = ed_cameraSystemOrbitDollyButton;
+        CameraOrbitDollyButton = InputChannelId(orbitDolly.c_str());
+        const AZ::CVarFixedString& orbitPan = ed_cameraSystemOrbitPanButton;
+        CameraOrbitPanButton = InputChannelId(orbitPan.c_str());
+    }
+
+    static void ReloadCameraKeyBindingsConsole(const AZ::ConsoleCommandContainer&)
+    {
+        ReloadCameraKeyBindings();
+    }
+
+    AZ_CONSOLEFREEFUNC(ReloadCameraKeyBindingsConsole, AZ::ConsoleFunctorFlags::Null, "Reload keybindings for the modern camera system");
+
+    // Based on paper by David Eberly - https://www.geometrictools.com/Documentation/EulerAngles.pdf
+    AZ::Vector3 EulerAngles(const AZ::Matrix3x3& orientation)
+    {
+        float x;
+        float y;
+        float z;
+
+        // 2.4 Factor as RzRyRx
+        if (orientation.GetElement(2, 0) < 1.0f)
         {
-            m_currentCursorPosition = cursor_motion->m_position;
+            if (orientation.GetElement(2, 0) > -1.0f)
+            {
+                x = AZStd::atan2(orientation.GetElement(2, 1), orientation.GetElement(2, 2));
+                y = AZStd::asin(-orientation.GetElement(2, 0));
+                z = AZStd::atan2(orientation.GetElement(1, 0), orientation.GetElement(0, 0));
+            }
+            else
+            {
+                x = 0.0f;
+                y = AZ::Constants::Pi * 0.5f;
+                z = -AZStd::atan2(-orientation.GetElement(2, 1), orientation.GetElement(1, 1));
+            }
+        }
+        else
+        {
+            x = 0.0f;
+            y = -AZ::Constants::Pi * 0.5f;
+            z = AZStd::atan2(-orientation.GetElement(1, 2), orientation.GetElement(1, 1));
+        }
+
+        return {x, y, z};
+    }
+
+    void UpdateCameraFromTransform(Camera& camera, const AZ::Transform& transform)
+    {
+        const auto eulerAngles = AzFramework::EulerAngles(AZ::Matrix3x3::CreateFromTransform(transform));
+
+        camera.m_pitch = eulerAngles.GetX();
+        camera.m_yaw = eulerAngles.GetZ();
+        // note: m_lookDist is negative so we must invert it here
+        camera.m_lookAt = transform.GetTranslation() + (camera.Rotation().GetBasisY() * -camera.m_lookDist);
+    }
+
+    static ScreenVector CursorDelta(const AZStd::optional<ScreenPoint>& currentPosition, const AZStd::optional<ScreenPoint>& lastPosition)
+    {
+        return currentPosition.has_value() && lastPosition.has_value() ? currentPosition.value() - lastPosition.value()
+                                                                       : ScreenVector(0, 0);
+    }
+
+    bool CameraSystem::HandleEvents(const InputEvent& event)
+    {
+        if (const auto& cursor = AZStd::get_if<CursorEvent>(&event))
+        {
+            m_currentCursorPosition = cursor->m_position;
         }
         else if (const auto& scroll = AZStd::get_if<ScrollEvent>(&event))
         {
             m_scrollDelta = scroll->m_delta;
         }
 
-        m_cameras.HandleEvents(event);
+        return m_cameras.HandleEvents(event, CursorDelta(m_currentCursorPosition, m_lastCursorPosition), m_scrollDelta);
     }
 
-    Camera CameraSystem::StepCamera(const Camera& targetCamera, float deltaTime)
+    Camera CameraSystem::StepCamera(const Camera& targetCamera, const float deltaTime)
     {
-        const auto cursorDelta = m_currentCursorPosition.has_value() && m_lastCursorPosition.has_value()
-            ? m_currentCursorPosition.value() - m_lastCursorPosition.value()
-            : ScreenVector(0, 0);
-
+        const auto cursorDelta = CursorDelta(m_currentCursorPosition, m_lastCursorPosition);
         if (m_currentCursorPosition.has_value())
         {
             m_lastCursorPosition = m_currentCursorPosition;
@@ -51,36 +191,41 @@ namespace AzFramework
         return nextCamera;
     }
 
-    void Cameras::AddCamera(AZStd::shared_ptr<CameraInput> camera_input)
+    void Cameras::AddCamera(AZStd::shared_ptr<CameraInput> cameraInput)
     {
-        m_idleCameraInputs.push_back(AZStd::move(camera_input));
+        m_idleCameraInputs.push_back(AZStd::move(cameraInput));
     }
 
-    void Cameras::HandleEvents(const InputEvent& event)
+    bool Cameras::HandleEvents(const InputEvent& event, const ScreenVector& cursorDelta, float scrollDelta)
     {
-        for (auto& camera_input : m_activeCameraInputs)
+        bool handling = false;
+        for (auto& cameraInput : m_activeCameraInputs)
         {
-            camera_input->HandleEvents(event);
+            cameraInput->HandleEvents(event, cursorDelta, scrollDelta);
+            handling = !cameraInput->Idle() || handling;
         }
 
-        for (auto& camera_input : m_idleCameraInputs)
+        for (auto& cameraInput : m_idleCameraInputs)
         {
-            camera_input->HandleEvents(event);
+            cameraInput->HandleEvents(event, cursorDelta, scrollDelta);
         }
+
+        return handling;
     }
 
-    Camera Cameras::StepCamera(const Camera& targetCamera, const ScreenVector& cursorDelta, float scrollDelta, const float deltaTime)
+    Camera Cameras::StepCamera(const Camera& targetCamera, const ScreenVector& cursorDelta, const float scrollDelta, const float deltaTime)
     {
         for (int i = 0; i < m_idleCameraInputs.size();)
         {
-            auto& camera_input = m_idleCameraInputs[i];
-            const bool can_begin = camera_input->Beginning() &&
-                std::all_of(m_activeCameraInputs.cbegin(), m_activeCameraInputs.cend(),
-                            [](const auto& input) { return !input->Exclusive(); }) &&
-                (!camera_input->Exclusive() || (camera_input->Exclusive() && m_activeCameraInputs.empty()));
-            if (can_begin)
+            auto& cameraInput = m_idleCameraInputs[i];
+            const bool canBegin = cameraInput->Beginning() &&
+                AZStd::all_of(m_activeCameraInputs.cbegin(), m_activeCameraInputs.cend(),
+                              [](const auto& input) { return !input->Exclusive(); }) &&
+                (!cameraInput->Exclusive() || (cameraInput->Exclusive() && m_activeCameraInputs.empty()));
+
+            if (canBegin)
             {
-                m_activeCameraInputs.push_back(camera_input);
+                m_activeCameraInputs.push_back(cameraInput);
                 using AZStd::swap;
                 swap(m_idleCameraInputs[i], m_idleCameraInputs[m_idleCameraInputs.size() - 1]);
                 m_idleCameraInputs.pop_back();
@@ -93,25 +238,25 @@ namespace AzFramework
 
         // accumulate
         Camera nextCamera = targetCamera;
-        for (auto& camera_input : m_activeCameraInputs)
+        for (auto& cameraInput : m_activeCameraInputs)
         {
-            nextCamera = camera_input->StepCamera(nextCamera, cursorDelta, scrollDelta, deltaTime);
+            nextCamera = cameraInput->StepCamera(nextCamera, cursorDelta, scrollDelta, deltaTime);
         }
 
         for (int i = 0; i < m_activeCameraInputs.size();)
         {
-            auto& camera_input = m_activeCameraInputs[i];
-            if (camera_input->Ending())
+            auto& cameraInput = m_activeCameraInputs[i];
+            if (cameraInput->Ending())
             {
-                camera_input->ClearActivation();
-                m_idleCameraInputs.push_back(camera_input);
+                cameraInput->ClearActivation();
+                m_idleCameraInputs.push_back(cameraInput);
                 using AZStd::swap;
                 swap(m_activeCameraInputs[i], m_activeCameraInputs[m_activeCameraInputs.size() - 1]);
                 m_activeCameraInputs.pop_back();
             }
             else
             {
-                camera_input->ContinueActivation();
+                cameraInput->ContinueActivation();
                 i++;
             }
         }
@@ -130,22 +275,35 @@ namespace AzFramework
         }
     }
 
-    void RotateCameraInput::HandleEvents(const InputEvent& event)
+    void RotateCameraInput::HandleEvents(const InputEvent& event, const ScreenVector& cursorDelta, [[maybe_unused]] float scrollDelta)
     {
         if (const auto& input = AZStd::get_if<DiscreteInputEvent>(&event))
         {
-            if (input->m_channelId == m_channelId)
+            if (input->m_channelId == m_rotateChannelId)
             {
                 if (input->m_state == InputChannel::State::Began)
                 {
-                    BeginActivation();
+                    m_tryingToBegin = true;
+                    m_moveAccumulator = 0.0f;
                 }
                 else if (input->m_state == InputChannel::State::Ended)
                 {
+                    m_tryingToBegin = false;
                     EndActivation();
                 }
             }
         }
+
+        if (m_tryingToBegin)
+        {
+            // only allow the action to begin if the mouse has been moved a small amount
+            m_moveAccumulator += ScreenVectorLength(cursorDelta);
+            if (m_moveAccumulator > ed_cameraSystemLookDeadzone)
+            {
+                BeginActivation();
+                m_tryingToBegin = false;
+            }
+        }
     }
 
     Camera RotateCameraInput::StepCamera(
@@ -154,23 +312,24 @@ namespace AzFramework
     {
         Camera nextCamera = targetCamera;
 
-        nextCamera.m_pitch += float(cursorDelta.m_y) * m_props.m_rotateSpeed;
-        nextCamera.m_yaw += float(cursorDelta.m_x) * m_props.m_rotateSpeed;
+        nextCamera.m_pitch -= float(cursorDelta.m_y) * ed_cameraSystemRotateSpeed;
+        nextCamera.m_yaw -= float(cursorDelta.m_x) * ed_cameraSystemRotateSpeed;
 
-        auto clamp_rotation = [](const float angle) { return std::fmod(angle + AZ::Constants::TwoOverPi, AZ::Constants::TwoOverPi); };
+        const auto clampRotation = [](const float angle) { return AZStd::fmod(angle + AZ::Constants::TwoPi, AZ::Constants::TwoPi); };
 
-        nextCamera.m_yaw = clamp_rotation(nextCamera.m_yaw);
+        nextCamera.m_yaw = clampRotation(nextCamera.m_yaw);
         // clamp pitch to be +-90 degrees
-        nextCamera.m_pitch = AZ::GetClamp(nextCamera.m_pitch, -AZ::Constants::Pi * 0.5f, AZ::Constants::Pi * 0.5f);
+        nextCamera.m_pitch = AZ::GetClamp(nextCamera.m_pitch, -AZ::Constants::HalfPi, AZ::Constants::HalfPi);
 
         return nextCamera;
     }
 
-    void PanCameraInput::HandleEvents(const InputEvent& event)
+    void PanCameraInput::HandleEvents(
+        const InputEvent& event, [[maybe_unused]] const ScreenVector& cursorDelta, [[maybe_unused]] float scrollDelta)
     {
         if (const auto& input = AZStd::get_if<DiscreteInputEvent>(&event))
         {
-            if (input->m_channelId == InputDeviceMouse::Button::Middle)
+            if (input->m_channelId == m_panChannelId)
             {
                 if (input->m_state == InputChannel::State::Began)
                 {
@@ -190,51 +349,50 @@ namespace AzFramework
     {
         Camera nextCamera = targetCamera;
 
-        const auto pan_axes = m_panAxesFn(nextCamera);
+        const auto panAxes = m_panAxesFn(nextCamera);
 
-        const auto delta_pan_x = float(cursorDelta.m_x) * pan_axes.m_horizontalAxis * m_props.m_panSpeed;
-        const auto delta_pan_y = float(cursorDelta.m_y) * pan_axes.m_verticalAxis * m_props.m_panSpeed;
+        const auto deltaPanX = float(cursorDelta.m_x) * panAxes.m_horizontalAxis * ed_cameraSystemPanSpeed;
+        const auto deltaPanY = float(cursorDelta.m_y) * panAxes.m_verticalAxis * ed_cameraSystemPanSpeed;
 
         const auto inv = [](const bool invert) {
             constexpr float Dir[] = {1.0f, -1.0f};
             return Dir[static_cast<int>(invert)];
         };
 
-        nextCamera.m_lookAt += delta_pan_x * inv(m_props.m_panInvertX);
-        nextCamera.m_lookAt += delta_pan_y * -inv(m_props.m_panInvertY);
+        nextCamera.m_lookAt += deltaPanX * inv(ed_cameraSystemPanInvertX);
+        nextCamera.m_lookAt += deltaPanY * -inv(ed_cameraSystemPanInvertY);
 
         return nextCamera;
     }
 
     TranslateCameraInput::TranslationType TranslateCameraInput::translationFromKey(InputChannelId channelId)
     {
-        // note: remove hard-coded InputDevice keys
-        if (channelId == InputDeviceKeyboard::Key::AlphanumericW)
+        if (channelId == CameraTranslateForwardId)
         {
             return TranslationType::Forward;
         }
 
-        if (channelId == InputDeviceKeyboard::Key::AlphanumericS)
+        if (channelId == CameraTranslateBackwardId)
         {
             return TranslationType::Backward;
         }
 
-        if (channelId == InputDeviceKeyboard::Key::AlphanumericA)
+        if (channelId == CameraTranslateLeftId)
         {
             return TranslationType::Left;
         }
 
-        if (channelId == InputDeviceKeyboard::Key::AlphanumericD)
+        if (channelId == CameraTranslateRightId)
         {
             return TranslationType::Right;
         }
 
-        if (channelId == InputDeviceKeyboard::Key::AlphanumericQ)
+        if (channelId == CameraTranslateDownId)
         {
             return TranslationType::Down;
         }
 
-        if (channelId == InputDeviceKeyboard::Key::AlphanumericE)
+        if (channelId == CameraTranslateUpId)
         {
             return TranslationType::Up;
         }
@@ -242,7 +400,8 @@ namespace AzFramework
         return TranslationType::Nil;
     }
 
-    void TranslateCameraInput::HandleEvents(const InputEvent& event)
+    void TranslateCameraInput::HandleEvents(
+        const InputEvent& event, [[maybe_unused]] const ScreenVector& cursorDelta, [[maybe_unused]] float scrollDelta)
     {
         if (const auto& input = AZStd::get_if<DiscreteInputEvent>(&event))
         {
@@ -259,19 +418,19 @@ namespace AzFramework
                     BeginActivation();
                 }
 
-                if (input->m_channelId == InputDeviceKeyboard::Key::ModifierShiftL)
+                if (input->m_channelId == CameraTranslateBoostId)
                 {
                     m_boost = true;
                 }
             }
             else if (input->m_state == InputChannel::State::Ended)
             {
-                m_translation ^= translationFromKey(input->m_channelId);
+                m_translation &= ~(translationFromKey(input->m_channelId));
                 if (m_translation == TranslationType::Nil)
                 {
                     EndActivation();
                 }
-                if (input->m_channelId == InputDeviceKeyboard::Key::ModifierShiftL)
+                if (input->m_channelId == CameraTranslateBoostId)
                 {
                     m_boost = false;
                 }
@@ -285,13 +444,13 @@ namespace AzFramework
     {
         Camera nextCamera = targetCamera;
 
-        const auto translation_basis = m_translationAxesFn(nextCamera);
-        const auto axisX = translation_basis.GetBasisX();
-        const auto axisY = translation_basis.GetBasisY();
-        const auto axisZ = translation_basis.GetBasisZ();
+        const auto translationBasis = m_translationAxesFn(nextCamera);
+        const auto axisX = translationBasis.GetBasisX();
+        const auto axisY = translationBasis.GetBasisY();
+        const auto axisZ = translationBasis.GetBasisZ();
 
-        const float speed = [boost = m_boost, props = m_props]() {
-            return props.m_translateSpeed * (boost ? props.m_boostMultiplier : 1.0f);
+        const float speed = [boost = m_boost]() {
+            return ed_cameraSystemTranslateSpeed * (boost ? ed_cameraSystemBoostMultiplier : 1.0f);
         }();
 
         if ((m_translation & TranslationType::Forward) == TranslationType::Forward)
@@ -338,16 +497,12 @@ namespace AzFramework
         m_boost = false;
     }
 
-    void OrbitCameraInput::HandleEvents(const InputEvent& event)
+    void OrbitCameraInput::HandleEvents(const InputEvent& event, const ScreenVector& cursorDelta, float scrollDelta)
     {
         if (const auto* input = AZStd::get_if<DiscreteInputEvent>(&event))
         {
-            if (input->m_channelId == InputDeviceKeyboard::Key::ModifierAltL)
+            if (input->m_channelId == CameraOrbitId)
             {
-                if (input->m_state == InputChannel::State::Updated)
-                {
-                    goto end;
-                }
                 if (input->m_state == InputChannel::State::Began)
                 {
                     BeginActivation();
@@ -358,37 +513,39 @@ namespace AzFramework
                 }
             }
         }
-    end:
+
         if (Active())
         {
-            m_orbitCameras.HandleEvents(event);
+            m_orbitCameras.HandleEvents(event, cursorDelta, scrollDelta);
         }
     }
 
     Camera OrbitCameraInput::StepCamera(
-        const Camera& targetCamera, const ScreenVector& cursorDelta, const float scrollDelta, float deltaTime)
+        const Camera& targetCamera, const ScreenVector& cursorDelta, const float scrollDelta, const float deltaTime)
     {
         Camera nextCamera = targetCamera;
 
         if (Beginning())
         {
             float hit_distance = 0.0f;
-            if (AZ::Plane::CreateFromNormalAndPoint(AZ::Vector3::CreateAxisZ(), AZ::Vector3::CreateZero())
-                    .CastRay(targetCamera.Translation(), targetCamera.Rotation().GetBasisY() * m_props.m_maxOrbitDistance, hit_distance))
+            AZ::Plane::CreateFromNormalAndPoint(AZ::Vector3::CreateAxisZ(), AZ::Vector3::CreateAxisZ(ed_cameraSystemDefaultPlaneHeight))
+                .CastRay(targetCamera.Translation(), targetCamera.Rotation().GetBasisY(), hit_distance);
+
+            if (hit_distance > 0.0f)
             {
+                hit_distance = AZStd::min<float>(hit_distance, ed_cameraSystemMaxOrbitDistance);
                 nextCamera.m_lookDist = -hit_distance;
                 nextCamera.m_lookAt = targetCamera.Translation() + targetCamera.Rotation().GetBasisY() * hit_distance;
             }
             else
             {
-                nextCamera.m_lookDist = -m_props.m_defaultOrbitDistance;
-                nextCamera.m_lookAt = targetCamera.Translation() + targetCamera.Rotation().GetBasisY() * m_props.m_defaultOrbitDistance;
+                nextCamera.m_lookDist = -ed_cameraSystemMaxOrbitDistance;
+                nextCamera.m_lookAt = targetCamera.Translation() + targetCamera.Rotation().GetBasisY() * ed_cameraSystemMaxOrbitDistance;
             }
         }
 
         if (Active())
         {
-            // todo: need to return nested cameras to idle state when ending
             nextCamera = m_orbitCameras.StepCamera(nextCamera, cursorDelta, scrollDelta, deltaTime);
         }
 
@@ -403,7 +560,8 @@ namespace AzFramework
         return nextCamera;
     }
 
-    void OrbitDollyScrollCameraInput::HandleEvents(const InputEvent& event)
+    void OrbitDollyScrollCameraInput::HandleEvents(
+        const InputEvent& event, [[maybe_unused]] const ScreenVector& cursorDelta, [[maybe_unused]] float scrollDelta)
     {
         if (const auto* scroll = AZStd::get_if<ScrollEvent>(&event))
         {
@@ -413,19 +571,20 @@ namespace AzFramework
 
     Camera OrbitDollyScrollCameraInput::StepCamera(
         const Camera& targetCamera, [[maybe_unused]] const ScreenVector& cursorDelta, const float scrollDelta,
-        [[maybe_unused]] float deltaTime)
+        [[maybe_unused]] const float deltaTime)
     {
         Camera nextCamera = targetCamera;
-        nextCamera.m_lookDist = AZ::GetMin(nextCamera.m_lookDist + scrollDelta * m_props.m_dollySpeed, 0.0f);
+        nextCamera.m_lookDist = AZ::GetMin(nextCamera.m_lookDist + scrollDelta * ed_cameraSystemOrbitDollyScrollSpeed, 0.0f);
         EndActivation();
         return nextCamera;
     }
 
-    void OrbitDollyCursorMoveCameraInput::HandleEvents(const InputEvent& event)
+    void OrbitDollyCursorMoveCameraInput::HandleEvents(
+        const InputEvent& event, [[maybe_unused]] const ScreenVector& cursorDelta, [[maybe_unused]] float scrollDelta)
     {
         if (const auto& input = AZStd::get_if<DiscreteInputEvent>(&event))
         {
-            if (input->m_channelId == InputDeviceMouse::Button::Right)
+            if (input->m_channelId == m_dollyChannelId)
             {
                 if (input->m_state == InputChannel::State::Began)
                 {
@@ -444,11 +603,12 @@ namespace AzFramework
         [[maybe_unused]] const float deltaTime)
     {
         Camera nextCamera = targetCamera;
-        nextCamera.m_lookDist = AZ::GetMin(nextCamera.m_lookDist + float(cursorDelta.m_y) * m_props.m_dollySpeed, 0.0f);
+        nextCamera.m_lookDist = AZ::GetMin(nextCamera.m_lookDist + float(cursorDelta.m_y) * ed_cameraSystemOrbitDollyCursorSpeed, 0.0f);
         return nextCamera;
     }
 
-    void ScrollTranslationCameraInput::HandleEvents(const InputEvent& event)
+    void ScrollTranslationCameraInput::HandleEvents(
+        const InputEvent& event, [[maybe_unused]] const ScreenVector& cursorDelta, [[maybe_unused]] float scrollDelta)
     {
         if (const auto* scroll = AZStd::get_if<ScrollEvent>(&event))
         {
@@ -457,7 +617,7 @@ namespace AzFramework
     }
 
     Camera ScrollTranslationCameraInput::StepCamera(
-        const Camera& targetCamera, [[maybe_unused]] const ScreenVector& cursorDelta, float scrollDelta,
+        const Camera& targetCamera, [[maybe_unused]] const ScreenVector& cursorDelta, const float scrollDelta,
         [[maybe_unused]] const float deltaTime)
     {
         Camera nextCamera = targetCamera;
@@ -465,39 +625,40 @@ namespace AzFramework
         const auto translation_basis = LookTranslation(nextCamera);
         const auto axisY = translation_basis.GetBasisY();
 
-        nextCamera.m_lookAt += axisY * scrollDelta * m_props.m_translateSpeed;
+        nextCamera.m_lookAt += axisY * scrollDelta * ed_cameraSystemScrollTranslateSpeed;
 
         EndActivation();
 
         return nextCamera;
     }
 
-    Camera SmoothCamera(const Camera& currentCamera, const Camera& targetCamera, const SmoothProps& props, const float deltaTime)
+    Camera SmoothCamera(const Camera& currentCamera, const Camera& targetCamera, const float deltaTime)
     {
-        const auto clamp_rotation = [](const float angle) { return std::fmod(angle + AZ::Constants::TwoPi, AZ::Constants::TwoPi); };
+        const auto clamp_rotation = [](const float angle) { return AZStd::fmod(angle + AZ::Constants::TwoPi, AZ::Constants::TwoPi); };
 
         // keep yaw in 0 - 360 range
-        float target_yaw = clamp_rotation(targetCamera.m_yaw);
-        const float current_yaw = clamp_rotation(currentCamera.m_yaw);
+        float targetYaw = clamp_rotation(targetCamera.m_yaw);
+        const float currentYaw = clamp_rotation(currentCamera.m_yaw);
 
-        auto sign = [](const float value) { return static_cast<float>((0.0f < value) - (value < 0.0f)); };
+        // return the sign of the float input (-1, 0, 1)
+        const auto sign = [](const float value) { return aznumeric_cast<float>((0.0f < value) - (value < 0.0f)); };
 
         // ensure smooth transition when moving across 0 - 360 boundary
-        const float yaw_delta = target_yaw - current_yaw;
-        if (std::abs(yaw_delta) >= AZ::Constants::Pi)
+        const float yawDelta = targetYaw - currentYaw;
+        if (AZStd::abs(yawDelta) >= AZ::Constants::Pi)
         {
-            target_yaw -= AZ::Constants::TwoPi * sign(yaw_delta);
+            targetYaw -= AZ::Constants::TwoPi * sign(yawDelta);
         }
 
         Camera camera;
-        // note: the math for the lerp smoothing implementation for camera rotation and translation was inspired by this excellent 
+        // note: the math for the lerp smoothing implementation for camera rotation and translation was inspired by this excellent
         // article by Scott Lembcke: https://www.gamasutra.com/blogs/ScottLembcke/20180404/316046/Improved_Lerp_Smoothing.php
-        const float lookRate = std::exp2(props.m_lookSmoothness);
-        const float lookT = std::exp2(-lookRate * deltaTime);
+        const float lookRate = AZStd::exp2(ed_cameraSystemLookSmoothness);
+        const float lookT = AZStd::exp2(-lookRate * deltaTime);
         camera.m_pitch = AZ::Lerp(targetCamera.m_pitch, currentCamera.m_pitch, lookT);
-        camera.m_yaw = AZ::Lerp(target_yaw, current_yaw, lookT);
-        const float moveRate = std::exp2(props.m_moveSmoothness);
-        const float moveT = std::exp2(-moveRate * deltaTime);
+        camera.m_yaw = AZ::Lerp(targetYaw, currentYaw, lookT);
+        const float moveRate = AZStd::exp2(ed_cameraSystemTranslateSmoothness);
+        const float moveT = AZStd::exp2(-moveRate * deltaTime);
         camera.m_lookDist = AZ::Lerp(targetCamera.m_lookDist, currentCamera.m_lookDist, moveT);
         camera.m_lookAt = targetCamera.m_lookAt.Lerp(currentCamera.m_lookAt, moveT);
         return camera;
@@ -508,20 +669,24 @@ namespace AzFramework
         const auto& inputChannelId = inputChannel.GetInputChannelId();
         const auto& inputDeviceId = inputChannel.GetInputDevice().GetInputDeviceId();
 
-        if (inputChannelId == InputDeviceMouse::SystemCursorPosition)
-        {
-            AZ::Vector2 systemCursorPositionNormalized = AZ::Vector2::CreateZero();
-            InputSystemCursorRequestBus::EventResult(
-                systemCursorPositionNormalized, inputDeviceId, &InputSystemCursorRequestBus::Events::GetSystemCursorPositionNormalized);
+        const bool wasMouseButton =
+            AZStd::any_of(InputDeviceMouse::Button::All.begin(), InputDeviceMouse::Button::All.end(), [inputChannelId](const auto& button) {
+                return button == inputChannelId;
+            });
 
-            return CursorMotionEvent{ScreenPoint(
-                systemCursorPositionNormalized.GetX() * windowSize.m_width, systemCursorPositionNormalized.GetY() * windowSize.m_height)};
+        if (inputChannelId == InputDeviceMouse::Movement::X || inputChannelId == InputDeviceMouse::Movement::Y)
+        {
+            const auto* position = inputChannel.GetCustomData<AzFramework::InputChannel::PositionData2D>();
+            AZ_Assert(position, "Expected PositionData2D but found nullptr");
+
+            return CursorEvent{ScreenPoint(
+                position->m_normalizedPosition.GetX() * windowSize.m_width, position->m_normalizedPosition.GetY() * windowSize.m_height)};
         }
         else if (inputChannelId == InputDeviceMouse::Movement::Z)
         {
             return ScrollEvent{inputChannel.GetValue()};
         }
-        else if (InputDeviceMouse::IsMouseDevice(inputDeviceId) || InputDeviceKeyboard::IsKeyboardDevice(inputDeviceId))
+        else if (wasMouseButton || InputDeviceKeyboard::IsKeyboardDevice(inputDeviceId))
         {
             return DiscreteInputEvent{inputChannelId, inputChannel.GetState()};
         }

Code/Framework/AzFramework/AzFramework/Viewport/CameraInput.h

@@ -17,13 +17,16 @@
 #include <AzCore/std/containers/variant.h>
 #include <AzCore/std/optional.h>
 #include <AzFramework/Input/Channels/InputChannel.h>
-#include <AzFramework/Input/Devices/Keyboard/InputDeviceKeyboard.h>
-#include <AzFramework/Input/Devices/Mouse/InputDeviceMouse.h>
 #include <AzFramework/Viewport/ScreenGeometry.h>
+#include <AzFramework/Viewport/ViewportId.h>
 
 namespace AzFramework
 {
-    struct WindowSize;
+    //! Update camera key bindings that can be overridden with AZ console vars (invoke from console to update)
+    void ReloadCameraKeyBindings();
+
+    //! Return Euler angles (pitch, roll, yaw) for the incoming orientation.
+    AZ::Vector3 EulerAngles(const AZ::Matrix3x3& orientation);
 
     struct Camera
     {
@@ -51,8 +54,8 @@ namespace AzFramework
 
     inline AZ::Transform Camera::Transform() const
     {
-        return AZ::Transform::CreateTranslation(m_lookAt) * AZ::Transform::CreateRotationX(m_pitch) *
-            AZ::Transform::CreateRotationZ(m_yaw) * AZ::Transform::CreateTranslation(AZ::Vector3::CreateAxisZ(m_lookDist));
+        return AZ::Transform::CreateTranslation(m_lookAt) * AZ::Transform::CreateRotationZ(m_yaw) *
+            AZ::Transform::CreateRotationX(m_pitch) * AZ::Transform::CreateTranslation(AZ::Vector3::CreateAxisY(m_lookDist));
     }
 
     inline AZ::Matrix3x3 Camera::Rotation() const
@@ -65,7 +68,9 @@ namespace AzFramework
         return Transform().GetTranslation();
     }
 
-    struct CursorMotionEvent
+    void UpdateCameraFromTransform(Camera& camera, const AZ::Transform& transform);
+
+    struct CursorEvent
     {
         ScreenPoint m_position;
     };
@@ -81,7 +86,7 @@ namespace AzFramework
         InputChannel::State m_state; //!< Channel state. (e.g. Begin/update/end event).
     };
 
-    using InputEvent = AZStd::variant<AZStd::monostate, CursorMotionEvent, ScrollEvent, DiscreteInputEvent>;
+    using InputEvent = AZStd::variant<AZStd::monostate, CursorEvent, ScrollEvent, DiscreteInputEvent>;
 
     class CameraInput
     {
@@ -142,7 +147,7 @@ namespace AzFramework
             ResetImpl();
         }
 
-        virtual void HandleEvents(const InputEvent& event) = 0;
+        virtual void HandleEvents(const InputEvent& event, const ScreenVector& cursorDelta, float scrollDelta) = 0;
         virtual Camera StepCamera(const Camera& targetCamera, const ScreenVector& cursorDelta, float scrollDelta, float deltaTime) = 0;
 
         virtual bool Exclusive() const
@@ -159,19 +164,13 @@ namespace AzFramework
         Activation m_activation = Activation::Idle;
     };
 
-    struct SmoothProps
-    {
-        float m_lookSmoothness = 5.0f;
-        float m_moveSmoothness = 5.0f;
-    };
-
-    Camera SmoothCamera(const Camera& currentCamera, const Camera& targetCamera, const SmoothProps& props, float deltaTime);
+    Camera SmoothCamera(const Camera& currentCamera, const Camera& targetCamera, float deltaTime);
 
     class Cameras
     {
     public:
         void AddCamera(AZStd::shared_ptr<CameraInput> cameraInput);
-        void HandleEvents(const InputEvent& event);
+        bool HandleEvents(const InputEvent& event, const ScreenVector& cursorDelta, float scrollDelta);
         Camera StepCamera(const Camera& targetCamera, const ScreenVector& cursorDelta, float scrollDelta, float deltaTime);
         void Reset();
 
@@ -183,7 +182,7 @@ namespace AzFramework
     class CameraSystem
     {
     public:
-        void HandleEvents(const InputEvent& event);
+        bool HandleEvents(const InputEvent& event);
         Camera StepCamera(const Camera& targetCamera, float deltaTime);
 
         Cameras m_cameras;
@@ -197,19 +196,18 @@ namespace AzFramework
     class RotateCameraInput : public CameraInput
     {
     public:
-        explicit RotateCameraInput(const InputChannelId channelId)
-            : m_channelId(channelId)
+        explicit RotateCameraInput(const InputChannelId rotateChannelId)
+            : m_rotateChannelId(rotateChannelId)
         {
         }
-        void HandleEvents(const InputEvent& event) override;
+
+        void HandleEvents(const InputEvent& event, const ScreenVector& cursorDelta, float scrollDelta) override;
         Camera StepCamera(const Camera& targetCamera, const ScreenVector& cursorDelta, float scrollDelta, float deltaTime) override;
 
-        InputChannelId m_channelId;
-
-        struct Props
-        {
-            float m_rotateSpeed = 0.005f;
-        } m_props;
+    private:
+        InputChannelId m_rotateChannelId;
+        float m_moveAccumulator = 0.0f;
+        bool m_tryingToBegin = false;
     };
 
     struct PanAxes
@@ -242,22 +240,17 @@ namespace AzFramework
     class PanCameraInput : public CameraInput
     {
     public:
-        explicit PanCameraInput(PanAxesFn panAxesFn)
+        PanCameraInput(const InputChannelId panChannelId, PanAxesFn panAxesFn)
             : m_panAxesFn(AZStd::move(panAxesFn))
+            , m_panChannelId(panChannelId)
         {
         }
-        void HandleEvents(const InputEvent& event) override;
+        void HandleEvents(const InputEvent& event, const ScreenVector& cursorDelta, float scrollDelta) override;
         Camera StepCamera(const Camera& targetCamera, const ScreenVector& cursorDelta, float scrollDelta, float deltaTime) override;
 
-        struct Props
-        {
-            float m_panSpeed = 0.01f;
-            bool m_panInvertX = true;
-            bool m_panInvertY = true;
-        } m_props;
-
     private:
         PanAxesFn m_panAxesFn;
+        InputChannelId m_panChannelId;
     };
 
     using TranslationAxesFn = AZStd::function<AZ::Matrix3x3(const Camera& camera)>;
@@ -294,21 +287,15 @@ namespace AzFramework
             : m_translationAxesFn(AZStd::move(translationAxesFn))
         {
         }
-        void HandleEvents(const InputEvent& event) override;
+        void HandleEvents(const InputEvent& event, const ScreenVector& cursorDelta, float scrollDelta) override;
         Camera StepCamera(const Camera& targetCamera, const ScreenVector& cursorDelta, float scrollDelta, float deltaTime) override;
         void ResetImpl() override;
 
-        struct Props
-        {
-            float m_translateSpeed = 10.0f;
-            float m_boostMultiplier = 3.0f;
-        } m_props;
-
     private:
         enum class TranslationType
         {
             // clang-format off
-            Nil     = 0,
+            Nil      = 0,
             Forward  = 1 << 0,
             Backward = 1 << 1,
             Left     = 1 << 2,
@@ -354,6 +341,11 @@ namespace AzFramework
             return lhs;
         }
 
+        friend TranslationType operator~(const TranslationType lhs)
+        {
+            return static_cast<TranslationType>(~static_cast<std::underlying_type_t<TranslationType>>(lhs));
+        }
+
         static TranslationType translationFromKey(InputChannelId channelId);
 
         TranslationType m_translation = TranslationType::Nil;
@@ -364,43 +356,34 @@ namespace AzFramework
     class OrbitDollyScrollCameraInput : public CameraInput
     {
     public:
-        void HandleEvents(const InputEvent& event) override;
+        void HandleEvents(const InputEvent& event, const ScreenVector& cursorDelta, float scrollDelta) override;
         Camera StepCamera(const Camera& targetCamera, const ScreenVector& cursorDelta, float scrollDelta, float deltaTime) override;
-
-        struct Props
-        {
-            float m_dollySpeed = 0.2f;
-        } m_props;
     };
 
     class OrbitDollyCursorMoveCameraInput : public CameraInput
     {
     public:
-        void HandleEvents(const InputEvent& event) override;
+        explicit OrbitDollyCursorMoveCameraInput(const InputChannelId dollyChannelId)
+            : m_dollyChannelId(dollyChannelId) {}
+
+        void HandleEvents(const InputEvent& event, const ScreenVector& cursorDelta, float scrollDelta) override;
         Camera StepCamera(const Camera& targetCamera, const ScreenVector& cursorDelta, float scrollDelta, float deltaTime) override;
 
-        struct Props
-        {
-            float m_dollySpeed = 0.1f;
-        } m_props;
+    private:
+        InputChannelId m_dollyChannelId;
     };
 
     class ScrollTranslationCameraInput : public CameraInput
     {
     public:
-        void HandleEvents(const InputEvent& event) override;
+        void HandleEvents(const InputEvent& event, const ScreenVector& cursorDelta, float scrollDelta) override;
         Camera StepCamera(const Camera& targetCamera, const ScreenVector& cursorDelta, float scrollDelta, float deltaTime) override;
-
-        struct Props
-        {
-            float m_translateSpeed = 0.2f;
-        } m_props;
     };
 
     class OrbitCameraInput : public CameraInput
     {
     public:
-        void HandleEvents(const InputEvent& event) override;
+        void HandleEvents(const InputEvent& event, const ScreenVector& cursorDelta, float scrollDelta) override;
         Camera StepCamera(const Camera& targetCamera, const ScreenVector& cursorDelta, float scrollDelta, float deltaTime) override;
         bool Exclusive() const override
         {
@@ -408,13 +391,10 @@ namespace AzFramework
         }
 
         Cameras m_orbitCameras;
-
-        struct Props
-        {
-            float m_defaultOrbitDistance = 15.0f;
-            float m_maxOrbitDistance = 100.0f;
-        } m_props;
     };
 
+    struct WindowSize;
+
+    //! Map from a generic InputChannel event to a camera specific InputEvent.
     InputEvent BuildInputEvent(const InputChannel& inputChannel, const WindowSize& windowSize);
 } // namespace AzFramework

Code/Framework/AzFramework/AzFramework/Viewport/MultiViewportController.h

@@ -48,15 +48,21 @@ namespace AzFramework
     };
 
     //! The interface used by MultiViewportController to manage individual instances.
+    template <class TController>
     class MultiViewportControllerInstanceInterface
     {
     public:
-        explicit MultiViewportControllerInstanceInterface(ViewportId viewport)
+        using ControllerType = TController;
+
+        MultiViewportControllerInstanceInterface(ViewportId viewport, ControllerType* controller)
             : m_viewportId(viewport)
+            , m_controller(controller)
         {
         }
 
         ViewportId GetViewportId() const { return m_viewportId; }
+        ControllerType* GetController() { return m_controller; }
+        const ControllerType* GetController() const { return m_controller; }
 
         virtual bool HandleInputChannelEvent([[maybe_unused]]const ViewportControllerInputEvent& event) { return false; }
         virtual void ResetInputChannels() {}
@@ -64,6 +70,7 @@ namespace AzFramework
 
     private:
         ViewportId m_viewportId;
+        ControllerType* m_controller;
     };
 } //namespace AzFramework
 

Code/Framework/AzFramework/AzFramework/Viewport/MultiViewportController.inl

@@ -17,8 +17,8 @@ namespace AzFramework
     MultiViewportController<TViewportControllerInstance, Priority>::~MultiViewportController()
     {
         static_assert(
-            AZStd::is_constructible<TViewportControllerInstance, ViewportId>::value,
-            "TViewportControllerInstance must implement a TViewportControllerInstance(ViewportId) constructor"
+            AZStd::is_same<TViewportControllerInstance, decltype(TViewportControllerInstance(0, nullptr))>::value,
+            "TViewportControllerInstance must implement a TViewportControllerInstance(ViewportId, ViewportController) constructor"
         );
     }
 
@@ -50,7 +50,7 @@ namespace AzFramework
     template <class TViewportControllerInstance, ViewportControllerPriority Priority>
     void MultiViewportController<TViewportControllerInstance, Priority>::RegisterViewportContext(ViewportId viewport)
     {
-        m_instances[viewport] = AZStd::make_unique<TViewportControllerInstance>(viewport);
+        m_instances[viewport] = AZStd::make_unique<TViewportControllerInstance>(viewport, static_cast<typename TViewportControllerInstance::ControllerType*>(this));
     }
 
     template <class TViewportControllerInstance, ViewportControllerPriority Priority>

Code/Framework/AzFramework/AzFramework/Viewport/ScreenGeometry.h

@@ -134,11 +134,16 @@ namespace AzFramework
         return !operator==(lhs, rhs);
     }
 
+    inline float ScreenVectorLength(const ScreenVector& screenVector)
+    {
+        return aznumeric_cast<float>(AZStd::sqrt(screenVector.m_x * screenVector.m_x + screenVector.m_y * screenVector.m_y));
+    }
+
     inline ScreenPoint ScreenPointFromNDC(const AZ::Vector3& screenNDC, const AZ::Vector2& viewportSize)
     {
         return ScreenPoint(
-            aznumeric_caster(std::round(screenNDC.GetX() * viewportSize.GetX())),
-            aznumeric_caster(std::round((1.0f - screenNDC.GetY()) * viewportSize.GetY())));
+            aznumeric_caster(AZStd::round(screenNDC.GetX() * viewportSize.GetX())),
+            aznumeric_caster(AZStd::round((1.0f - screenNDC.GetY()) * viewportSize.GetY())));
     }
 
     inline AZ::Vector2 NDCFromScreenPoint(const ScreenPoint& screenPoint, const AZ::Vector2& viewportSize)

Code/Framework/AzFramework/AzFramework/Visibility/BoundsBus.h

@@ -12,6 +12,7 @@
 
 #pragma once
 
+#include <AzCore/Component/Entity.h>
 #include <AzCore/Component/ComponentBus.h>
 #include <AzCore/Component/TransformBus.h>
 #include <AzFramework/Render/GeometryIntersectionStructures.h>
@@ -27,7 +28,8 @@ namespace AZ
 namespace AzFramework
 {
     //! Implemented by components that provide bounds for use with various systems.
-    class BoundsRequests : public AZ::ComponentBus
+    class BoundsRequests
+        : public AZ::ComponentBus
     {
     public:
         static void Reflect(AZ::ReflectContext* context);
@@ -37,6 +39,7 @@ namespace AzFramework
         //! more than one component may be providing a bound. It isn't guaranteed which bound
         //! will be returned by a single call to GetWorldBounds.
         virtual AZ::Aabb GetWorldBounds() = 0;
+
         //! Returns an axis aligned bounding box in local space.
         //! @note It is preferred to use CalculateEntityLocalBoundsUnion in the general case as
         //! more than one component may be providing a bound. It isn't guaranteed which bound
@@ -46,17 +49,15 @@ namespace AzFramework
     protected:
         ~BoundsRequests() = default;
     };
-
     using BoundsRequestBus = AZ::EBus<BoundsRequests>;
 
     //! Returns a union of all local Aabbs provided by components implementing the BoundsRequestBus.
     //! @note It is preferred to call this function as opposed to GetLocalBounds directly as more than one
     //! component may be implementing this bus on an Entity and so only the first result (Aabb) will be returned.
-    inline AZ::Aabb CalculateEntityLocalBoundsUnion(const AZ::EntityId entityId)
+    inline AZ::Aabb CalculateEntityLocalBoundsUnion(const AZ::Entity* entity)
     {
         AZ::EBusReduceResult<AZ::Aabb, AabbUnionAggregator> aabbResult(AZ::Aabb::CreateNull());
-        BoundsRequestBus::EventResult(
-            aabbResult, entityId, &BoundsRequestBus::Events::GetLocalBounds);
+        BoundsRequestBus::EventResult(aabbResult, entity->GetId(), &BoundsRequestBus::Events::GetLocalBounds);
 
         if (aabbResult.value.IsValid())
         {
@@ -69,18 +70,18 @@ namespace AzFramework
     //! Returns a union of all world Aabbs provided by components implementing the BoundsRequestBus.
     //! @note It is preferred to call this function as opposed to GetWorldBounds directly as more than one
     //! component may be implementing this bus on an Entity and so only the first result (Aabb) will be returned.
-    inline AZ::Aabb CalculateEntityWorldBoundsUnion(const AZ::EntityId entityId)
+    inline AZ::Aabb CalculateEntityWorldBoundsUnion(const AZ::Entity* entity)
     {
         AZ::EBusReduceResult<AZ::Aabb, AabbUnionAggregator> aabbResult(AZ::Aabb::CreateNull());
-        BoundsRequestBus::EventResult(aabbResult, entityId, &BoundsRequestBus::Events::GetWorldBounds);
+        BoundsRequestBus::EventResult(aabbResult, entity->GetId(), &BoundsRequestBus::Events::GetWorldBounds);
 
         if (aabbResult.value.IsValid())
         {
             return aabbResult.value;
         }
 
-        AZ::Vector3 worldTranslation = AZ::Vector3::CreateZero();
-        AZ::TransformBus::EventResult(worldTranslation, entityId, &AZ::TransformBus::Events::GetWorldTranslation);
+        AZ::TransformInterface* transformInterface = entity->GetTransform();
+        const AZ::Vector3 worldTranslation = transformInterface->GetWorldTranslation();
         return AZ::Aabb::CreateCenterHalfExtents(worldTranslation, AZ::Vector3(0.5f));
     }
 } // namespace AzFramework

Code/Framework/AzFramework/AzFramework/Visibility/EntityBoundsUnionBus.h

@@ -23,9 +23,11 @@ namespace AzFramework
 {
     //! Provides an interface to retrieve and update the union of all Aabbs on a single Entity.
     //! @note This will be the combination/union of all individual Component Aabbs.
-    class EntityBoundsUnionRequests : public AZ::EBusTraits
+    class IEntityBoundsUnion
     {
     public:
+        AZ_RTTI(IEntityBoundsUnion, "{106968DD-43C0-478E-8045-523E0BF5D0F5}");
+
         //! Requests the cached union of component Aabbs to be recalculated as one may have changed.
         //! @note This is used to drive event driven updates to the visibility system.
         virtual void RefreshEntityLocalBoundsUnion(AZ::EntityId entityId) = 0;
@@ -38,9 +40,21 @@ namespace AzFramework
         //! also be called explicitly (e.g. For testing purposes).
         virtual void ProcessEntityBoundsUnionRequests() = 0;
 
+        //! Notifies the EntityBoundsUnion system that an entities transform has been modified.
+        //! @param entity the entity whose transform has been modified.
+        virtual void OnTransformUpdated(AZ::Entity* entity) = 0;
+
     protected:
-        ~EntityBoundsUnionRequests() = default;
+        ~IEntityBoundsUnion() = default;
     };
 
-    using EntityBoundsUnionRequestBus = AZ::EBus<EntityBoundsUnionRequests>;
+    // EBus wrapper for ScriptCanvas
+    class IEntityBoundsUnionTraits
+        : public AZ::EBusTraits
+    {
+    public:
+        static const AZ::EBusHandlerPolicy HandlerPolicy = AZ::EBusHandlerPolicy::Single;
+        static const AZ::EBusAddressPolicy AddressPolicy = AZ::EBusAddressPolicy::Single;
+    };
+    using IEntityBoundsUnionRequestBus = AZ::EBus<IEntityBoundsUnion, IEntityBoundsUnionTraits>;
 } // namespace AzFramework

Code/Framework/AzFramework/AzFramework/Visibility/EntityVisibilityBoundsUnionSystem.cpp

@@ -17,69 +17,70 @@
 
 namespace AzFramework
 {
+    EntityVisibilityBoundsUnionSystem::EntityVisibilityBoundsUnionSystem()
+        : m_entityActivatedEventHandler([this](AZ::Entity* entity) { OnEntityActivated(entity); })
+        , m_entityDeactivatedEventHandler([this](AZ::Entity* entity) { OnEntityDeactivated(entity); })
+    {
+        ;
+    }
+
     void EntityVisibilityBoundsUnionSystem::Connect()
     {
-        EntityBoundsUnionRequestBus::Handler::BusConnect();
-        AZ::TransformNotificationBus::Router::BusRouterConnect();
-        AZ::EntitySystemBus::Handler::BusConnect();
+        AZ::Interface<IEntityBoundsUnion>::Register(this);
+        IEntityBoundsUnionRequestBus::Handler::BusConnect();
         AZ::TickBus::Handler::BusConnect();
+
+        AZ::Interface<AZ::ComponentApplicationRequests>::Get()->RegisterEntityActivatedEventHandler(m_entityActivatedEventHandler);
+        AZ::Interface<AZ::ComponentApplicationRequests>::Get()->RegisterEntityDeactivatedEventHandler(m_entityDeactivatedEventHandler);
     }
 
     void EntityVisibilityBoundsUnionSystem::Disconnect()
     {
+        m_entityActivatedEventHandler.Disconnect();
+        m_entityDeactivatedEventHandler.Disconnect();
+
         AZ::TickBus::Handler::BusDisconnect();
-        AZ::EntitySystemBus::Handler::BusDisconnect();
-        AZ::TransformNotificationBus::Router::BusRouterDisconnect();
-        EntityBoundsUnionRequestBus::Handler::BusDisconnect();
+        IEntityBoundsUnionRequestBus::Handler::BusDisconnect();
+        AZ::Interface<IEntityBoundsUnion>::Unregister(this);
     }
 
-    static void SetUserDataEntityId(VisibilityEntry& visibilityEntry, const AZ::EntityId entityId)
-    {
-        static_assert(
-            sizeof(AZ::EntityId) <= sizeof(visibilityEntry.m_userData), "Ensure EntityId fits into m_userData");
-
-        visibilityEntry.m_typeFlags = VisibilityEntry::TYPE_Entity;
-
-        std::memcpy(&visibilityEntry.m_userData, &entityId, sizeof(AZ::EntityId));
-    }
-
-    void EntityVisibilityBoundsUnionSystem::OnEntityActivated(const AZ::EntityId& entityId)
+    void EntityVisibilityBoundsUnionSystem::OnEntityActivated(AZ::Entity* entity)
     {
         AZ_PROFILE_FUNCTION(AZ::Debug::ProfileCategory::AzFramework);
 
         // ignore any entity that might activate which does not have a TransformComponent
-        if (!AZ::TransformBus::HasHandlers(entityId))
+        if (entity->GetTransform() == nullptr)
         {
             return;
         }
 
-        if (auto instance_it = m_entityVisibilityBoundsUnionInstanceMapping.find(entityId);
+        if (auto instance_it = m_entityVisibilityBoundsUnionInstanceMapping.find(entity);
             instance_it == m_entityVisibilityBoundsUnionInstanceMapping.end())
         {
-            AZ::Transform worldFromLocal = AZ::Transform::CreateIdentity();
-            AZ::TransformBus::EventResult(worldFromLocal, entityId, &AZ::TransformBus::Events::GetWorldTM);
+            AZ::TransformInterface* transformInterface = entity->GetTransform();
+            const AZ::Vector3 entityPosition = transformInterface->GetWorldTranslation();
 
             EntityVisibilityBoundsUnionInstance instance;
-            instance.m_worldTransform = worldFromLocal;
-            instance.m_localEntityBoundsUnion = CalculateEntityLocalBoundsUnion(entityId);
-            SetUserDataEntityId(instance.m_visibilityEntry, entityId);
+            instance.m_localEntityBoundsUnion = CalculateEntityLocalBoundsUnion(entity);
+            instance.m_visibilityEntry.m_typeFlags = VisibilityEntry::TYPE_Entity;
+            instance.m_visibilityEntry.m_userData = static_cast<void*>(entity);
 
-            auto next_it = m_entityVisibilityBoundsUnionInstanceMapping.insert({entityId, instance});
-            UpdateVisibilitySystem(next_it.first->second);
+            auto next_it = m_entityVisibilityBoundsUnionInstanceMapping.insert({ entity, instance });
+            UpdateVisibilitySystem(entity, next_it.first->second);
         }
     }
 
-    void EntityVisibilityBoundsUnionSystem::OnEntityDeactivated(const AZ::EntityId& entityId)
+    void EntityVisibilityBoundsUnionSystem::OnEntityDeactivated(AZ::Entity* entity)
     {
         AZ_PROFILE_FUNCTION(AZ::Debug::ProfileCategory::AzFramework);
 
         // ignore any entity that might deactivate which does not have a TransformComponent
-        if (!AZ::TransformBus::HasHandlers(entityId))
+        if (entity->GetTransform() == nullptr)
         {
             return;
         }
 
-        if (auto instance_it = m_entityVisibilityBoundsUnionInstanceMapping.find(entityId);
+        if (auto instance_it = m_entityVisibilityBoundsUnionInstanceMapping.find(entity);
             instance_it != m_entityVisibilityBoundsUnionInstanceMapping.end())
         {
             if (IVisibilitySystem* visibilitySystem = AZ::Interface<IVisibilitySystem>::Get())
@@ -90,7 +91,7 @@ namespace AzFramework
         }
     }
 
-    void EntityVisibilityBoundsUnionSystem::UpdateVisibilitySystem(EntityVisibilityBoundsUnionInstance& instance)
+    void EntityVisibilityBoundsUnionSystem::UpdateVisibilitySystem(AZ::Entity* entity, EntityVisibilityBoundsUnionInstance& instance)
     {
         AZ_PROFILE_FUNCTION(AZ::Debug::ProfileCategory::AzFramework);
 
@@ -98,8 +99,8 @@ namespace AzFramework
         {
             // note: worldEntityBounds will not be a 'tight-fit' Aabb but that of a transformed local aabb
             // there will be some wasted space but it should be sufficient for the visibility system
-            const AZ::Aabb worldEntityBoundsUnion =
-                localEntityBoundsUnions.GetTransformedAabb(instance.m_worldTransform);
+            AZ::TransformInterface* transformInterface = entity->GetTransform();
+            const AZ::Aabb worldEntityBoundsUnion = localEntityBoundsUnions.GetTransformedAabb(transformInterface->GetWorldTM());
             IVisibilitySystem* visibilitySystem = AZ::Interface<IVisibilitySystem>::Get();
             if (visibilitySystem && !worldEntityBoundsUnion.IsClose(instance.m_visibilityEntry.m_boundingVolume))
             {
@@ -111,19 +112,27 @@ namespace AzFramework
 
     void EntityVisibilityBoundsUnionSystem::RefreshEntityLocalBoundsUnion(const AZ::EntityId entityId)
     {
-        // track entities that need their bounds union to be recalculated
-        m_entityIdsBoundsDirty.insert(entityId);
+        AZ::Entity* entity = AZ::Interface<AZ::ComponentApplicationRequests>::Get()->FindEntity(entityId);
+        if (entity != nullptr)
+        {
+            // track entities that need their bounds union to be recalculated
+            m_entityBoundsDirty.insert(entity);
+        }
     }
 
     AZ::Aabb EntityVisibilityBoundsUnionSystem::GetEntityLocalBoundsUnion(const AZ::EntityId entityId) const
     {
-        // if the EntityId is not found in the mapping then return a null Aabb, this is to mimic 
-        // as closely as possible the behavior of an individual GetLocalBounds call to an Entity that
-        // had been deleted (there would be no response, leaving the default value assigned)
-        if (auto instance_it = m_entityVisibilityBoundsUnionInstanceMapping.find(entityId);
-            instance_it != m_entityVisibilityBoundsUnionInstanceMapping.end())
+        AZ::Entity* entity = AZ::Interface<AZ::ComponentApplicationRequests>::Get()->FindEntity(entityId);
+        if (entity != nullptr)
         {
-            return instance_it->second.m_localEntityBoundsUnion;
+            // if the entity is not found in the mapping then return a null Aabb, this is to mimic 
+            // as closely as possible the behavior of an individual GetLocalBounds call to an Entity that
+            // had been deleted (there would be no response, leaving the default value assigned)
+            if (auto instance_it = m_entityVisibilityBoundsUnionInstanceMapping.find(entity);
+                instance_it != m_entityVisibilityBoundsUnionInstanceMapping.end())
+            {
+                return instance_it->second.m_localEntityBoundsUnion;
+            }
         }
 
         return AZ::Aabb::CreateNull();
@@ -134,45 +143,29 @@ namespace AzFramework
         AZ_PROFILE_FUNCTION(AZ::Debug::ProfileCategory::AzFramework);
 
         // iterate over all entities whose bounds changed and recalculate them
-        for (const auto& entityId : m_entityIdsBoundsDirty)
+        for (const auto& entity : m_entityBoundsDirty)
         {
-            if (auto instance_it = m_entityVisibilityBoundsUnionInstanceMapping.find(entityId);
+            if (auto instance_it = m_entityVisibilityBoundsUnionInstanceMapping.find(entity);
                 instance_it != m_entityVisibilityBoundsUnionInstanceMapping.end())
             {
-                instance_it->second.m_localEntityBoundsUnion = CalculateEntityLocalBoundsUnion(entityId);
-            }
-        }
-
-        auto allDirtyEntityIds = m_entityIdsTransformDirty;
-        allDirtyEntityIds.insert(m_entityIdsBoundsDirty.begin(), m_entityIdsBoundsDirty.end());
-
-        for (const auto& dirtyEntityId : allDirtyEntityIds)
-        {
-            if (auto instance_it = m_entityVisibilityBoundsUnionInstanceMapping.find(dirtyEntityId);
-                instance_it != m_entityVisibilityBoundsUnionInstanceMapping.end())
-            {
-                UpdateVisibilitySystem(instance_it->second);
+                instance_it->second.m_localEntityBoundsUnion = CalculateEntityLocalBoundsUnion(entity);
+                UpdateVisibilitySystem(entity, instance_it->second);
             }
         }
 
         // clear dirty entities once the visibility system has been updated
-        m_entityIdsBoundsDirty.clear();
-        m_entityIdsTransformDirty.clear();
+        m_entityBoundsDirty.clear();
     }
 
-    void EntityVisibilityBoundsUnionSystem::OnTransformChanged(
-        [[maybe_unused]] const AZ::Transform& local, const AZ::Transform& world)
+    void EntityVisibilityBoundsUnionSystem::OnTransformUpdated(AZ::Entity* entity)
     {
         AZ_PROFILE_FUNCTION(AZ::Debug::ProfileCategory::AzFramework);
 
-        const AZ::EntityId entityId = *AZ::TransformNotificationBus::GetCurrentBusId();
-        m_entityIdsTransformDirty.insert(entityId);
-
         // update the world transform of the visibility bounds union
-        if (auto instance_it = m_entityVisibilityBoundsUnionInstanceMapping.find(entityId);
+        if (auto instance_it = m_entityVisibilityBoundsUnionInstanceMapping.find(entity);
             instance_it != m_entityVisibilityBoundsUnionInstanceMapping.end())
         {
-            instance_it->second.m_worldTransform = world;
+            UpdateVisibilitySystem(entity, instance_it->second);
         }
     }
 

Code/Framework/AzFramework/AzFramework/Visibility/EntityVisibilityBoundsUnionSystem.h

@@ -23,12 +23,12 @@ namespace AzFramework
 {
     //! Provide a unified hook between entities and the visibility system.
     class EntityVisibilityBoundsUnionSystem
-        : public EntityBoundsUnionRequestBus::Handler
-        , private AZ::EntitySystemBus::Handler
-        , private AZ::TransformNotificationBus::Router
+        : public IEntityBoundsUnionRequestBus::Handler
         , private AZ::TickBus::Handler
     {
     public:
+        EntityVisibilityBoundsUnionSystem();
+
         void Connect();
         void Disconnect();
 
@@ -36,34 +36,31 @@ namespace AzFramework
         void RefreshEntityLocalBoundsUnion(AZ::EntityId entityId) override;
         AZ::Aabb GetEntityLocalBoundsUnion(AZ::EntityId entityId) const override;
         void ProcessEntityBoundsUnionRequests() override;
+        void OnTransformUpdated(AZ::Entity* entity) override;
 
     private:
         struct EntityVisibilityBoundsUnionInstance
         {
-            AZ::Transform m_worldTransform = AZ::Transform::CreateIdentity(); //!< The world transform of the Entity.
-            AZ::Aabb m_localEntityBoundsUnion =
-                AZ::Aabb::CreateNull(); //!< Entity union bounding volume in local space.
+            AZ::Aabb m_localEntityBoundsUnion = AZ::Aabb::CreateNull(); //!< Entity union bounding volume in local space.
             VisibilityEntry m_visibilityEntry; //!< Hook into the IVisibilitySystem interface.
         };
 
-        using UniqueEntityIds = AZStd::unordered_set<AZ::EntityId>;
+        using UniqueEntities = AZStd::set<AZ::Entity*>;
         using EntityVisibilityBoundsUnionInstanceMapping =
-            AZStd::unordered_map<AZ::EntityId, EntityVisibilityBoundsUnionInstance>;
+            AZStd::unordered_map<AZ::Entity*, EntityVisibilityBoundsUnionInstance>;
+
+        void OnEntityActivated(AZ::Entity* entity);
+        void OnEntityDeactivated(AZ::Entity* entity);
 
         // TickBus overrides ...
         void OnTick(float deltaTime, AZ::ScriptTimePoint time) override;
 
-        // EntitySystemBus overrides ...
-        void OnEntityActivated(const AZ::EntityId& entityId) override;
-        void OnEntityDeactivated(const AZ::EntityId& entityId) override;
-
-        // TransformNotificationBus overrides ...
-        void OnTransformChanged(const AZ::Transform& local, const AZ::Transform& world) override;
-
-        void UpdateVisibilitySystem(EntityVisibilityBoundsUnionInstance& instance);
+        void UpdateVisibilitySystem(AZ::Entity* entity, EntityVisibilityBoundsUnionInstance& instance);
 
         EntityVisibilityBoundsUnionInstanceMapping m_entityVisibilityBoundsUnionInstanceMapping;
-        UniqueEntityIds m_entityIdsBoundsDirty;
-        UniqueEntityIds m_entityIdsTransformDirty;
+        UniqueEntities m_entityBoundsDirty;
+
+        AZ::EntityActivatedEvent::Handler m_entityActivatedEventHandler;
+        AZ::EntityDeactivatedEvent::Handler m_entityDeactivatedEventHandler;
     };
 } // namespace AzFramework

Code/Framework/AzFramework/AzFramework/Visibility/EntityVisibilityQuery.cpp

@@ -14,6 +14,7 @@
 
 #include <AzCore/Console/Console.h>
 #include <AzCore/Debug/Profiler.h>
+#include <AzCore/Component/Entity.h>
 #include <AzCore/Math/ShapeIntersection.h>
 #include <AzFramework/Entity/EntityDebugDisplayBus.h>
 #include <AzFramework/Visibility/IVisibilitySystem.h>
@@ -66,6 +67,7 @@ namespace AzFramework
                     octreeDebug.m_nodeBounds.push_back(nodeData.m_bounds);
                 }
 
+                visibleEntityIdsOut.reserve(visibleEntityIdsOut.size() + nodeData.m_entries.size());
                 for (const auto* visibilityEntry : nodeData.m_entries)
                 {
                     if (ed_visibility_showDebug)
@@ -88,8 +90,7 @@ namespace AzFramework
                         octreeDebug.m_entryAabbsInFrustum.push_back(visibilityEntry->m_boundingVolume);
                     }
 
-                    AZ::EntityId entityId;
-                    std::memcpy(&entityId, &visibilityEntry->m_userData, sizeof(AZ::EntityId));
+                    AZ::EntityId entityId = static_cast<AZ::Entity*>(visibilityEntry->m_userData)->GetId();
                     visibleEntityIdsOut.push_back(entityId);
                 }
             });

Code/Framework/AzFramework/AzFramework/azframework_files.cmake

@@ -14,7 +14,6 @@ set(FILES
     AzFrameworkModule.h
     AzFrameworkModule.cpp
     API/ApplicationAPI.h
-    API/AtomActiveInterface.h
     Application/Application.cpp
     Application/Application.h
     Archive/Archive.cpp
@@ -214,6 +213,12 @@ set(FILES
     StreamingInstall/StreamingInstall.cpp
     StreamingInstall/StreamingInstallRequests.h
     StreamingInstall/StreamingInstallNotifications.h
+    Physics/Collision/CollisionEvents.h
+    Physics/Collision/CollisionEvents.cpp
+    Physics/Collision/CollisionLayers.h
+    Physics/Collision/CollisionLayers.cpp
+    Physics/Collision/CollisionGroups.h
+    Physics/Collision/CollisionGroups.cpp
     Physics/Common/PhysicsSceneQueries.h
     Physics/Common/PhysicsSceneQueries.cpp
     Physics/Common/PhysicsEvents.h
@@ -224,12 +229,7 @@ set(FILES
     Physics/Common/PhysicsSimulatedBodyEvents.h
     Physics/Common/PhysicsSimulatedBodyEvents.cpp
     Physics/Common/PhysicsTypes.h
-    Physics/Collision/CollisionEvents.h
-    Physics/Collision/CollisionEvents.cpp
-    Physics/Collision/CollisionLayers.h
-    Physics/Collision/CollisionLayers.cpp
-    Physics/Collision/CollisionGroups.h
-    Physics/Collision/CollisionGroups.cpp
+    Physics/Components/SimulatedBodyComponentBus.h
     Physics/Configuration/CollisionConfiguration.h
     Physics/Configuration/CollisionConfiguration.cpp
     Physics/Configuration/RigidBodyConfiguration.h
@@ -266,7 +266,6 @@ set(FILES
     Physics/ShapeConfiguration.h
     Physics/ShapeConfiguration.cpp
     Physics/SystemBus.h
-    Physics/WorldBodyBus.h
     Physics/ColliderComponentBus.h
     Physics/RagdollPhysicsBus.h
     Physics/CharacterPhysicsDataBus.h

Code/Framework/AzFramework/Platform/Android/AzFramework/Archive/ArchiveVars_Android.h

@@ -13,4 +13,3 @@
 #pragma once
 
 #define STREAM_CACHE_DEFAULT 0
-#define FRONTEND_SHADER_CACHE_DEFAULT 0

Code/Framework/AzFramework/Platform/Common/Apple/AzFramework/Utils/SystemUtilsApple.h

@@ -0,0 +1,78 @@
+/*
+* All or portions of this file Copyright (c) Amazon.com, Inc. or its affiliates or
+* its licensors.
+*
+* For complete copyright and license terms please see the LICENSE at the root of this
+* distribution (the "License"). All use of this software is governed by the License,
+* or, if provided, by the license below or the license accompanying this file. Do not
+* remove or modify any license notices. This file is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+*
+*/
+// Original file Copyright Crytek GMBH or its affiliates, used under license.
+
+// Description : Utilities for iOS and Mac OS X. Needs to be separated
+//               due to conflict with the system headers.
+
+
+#ifndef CRYINCLUDE_CRYSYSTEM_SYSTEMUTILSAPPLE_H
+#define CRYINCLUDE_CRYSYSTEM_SYSTEMUTILSAPPLE_H
+#pragma once
+
+#include <sys/resource.h>
+#include <sys/types.h>
+#include <AzCore/std/string/string.h>
+
+namespace SystemUtilsApple
+{
+    // Get the path to the application's bundle.
+    // - Returns length of the string or 0 on failure.
+    size_t GetPathToApplicationBundle(char* buffer, size_t bufferLen);
+
+    // Get the path to the application's executable.
+    // - Returns length of the string or 0 on failure.
+    size_t GetPathToApplicationExecutable(char* buffer, size_t bufferLen);
+
+    // Get the path to the application's resources.
+    // - Returns length of the string or 0 on failure.
+    size_t GetPathToApplicationResources(char* buffer, size_t bufferLen);
+
+    // Get the path to the user domain's application support directory.
+    // - Returns length of the string or 0 on failure.
+    // - Used to store application generated content.
+    // - iOS: Not available through file sharing.
+    // - Persistent, backed up by iTunes.
+    size_t GetPathToUserApplicationSupportDirectory(char* buffer, size_t bufferLen);
+
+    // Get the path to the user domain's caches directory.
+    // - Returns length of the string or 0 on failure.
+    // - Used to store application generated content.
+    // - iOS: Not available through file sharing.
+    // - Temporary, not backed up by iTunes.
+    size_t GetPathToUserCachesDirectory(char* buffer, size_t bufferLen);
+
+    // Get the path to the user domain's document directory.
+    // - Returns length of the string or 0 on failure.
+    // - Used to store user generated content.
+    // - iOS: Available through file sharing.
+    // - Persistent, backed up by iTunes.
+    size_t GetPathToUserDocumentDirectory(char* buffer, size_t bufferLen);
+
+    // Get the path to the user domain's library directory.
+    // - Returns length of the string or 0 on failure.
+    // - Parent directory of app support and caches.
+    // - iOS: Not available through file sharing.
+    // - Persistent, backed up by iTunes.
+    size_t GetPathToUserLibraryDirectory(char* buffer, size_t bufferLen);
+
+    // Get the user's name.
+    // - Returns length of the string or 0 on failure.
+    size_t GetUserName(char* buffer, size_t bufferLen);
+
+    // Get the device's machine name
+    // - Returns string representing device identifier or empty string on failure
+    // - Unique for each model
+    AZStd::string GetMachineName();
+}
+
+#endif // CRYINCLUDE_CRYSYSTEM_SYSTEMUTILSAPPLE_H

Code/Framework/AzFramework/Platform/Common/Apple/AzFramework/Utils/SystemUtilsApple.mm

@@ -0,0 +1,131 @@
+/*
+* All or portions of this file Copyright (c) Amazon.com, Inc. or its affiliates or
+* its licensors.
+*
+* For complete copyright and license terms please see the LICENSE at the root of this
+* distribution (the "License"). All use of this software is governed by the License,
+* or, if provided, by the license below or the license accompanying this file. Do not
+* remove or modify any license notices. This file is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+*
+*/
+
+// Original file Copyright Crytek GMBH or its affiliates, used under license.
+
+#include "SystemUtilsApple.h"
+#include <AzCore/base.h>
+#include <AzCore/Debug/Trace.h>
+#include <Foundation/Foundation.h>
+#include <mach-o/dyld.h>
+#include <pthread.h>
+#include <sys/utsname.h>
+
+////////////////////////////////////////////////////////////////////////////////////////////////////
+namespace SystemUtilsApplePrivate
+{
+    ////////////////////////////////////////////////////////////////////////////////////////////////
+    // Performs a 'safe' string copy from 'NString* source' to 'char* buffer' of 'size_t bufferLen'.
+    // Returns the length of the string, or 0 if the buffer is not large enough to hold the source.
+    // Copying an empty or null string will return 0, and null-terminate the buffer if possible.
+    ////////////////////////////////////////////////////////////////////////////////////////////////
+    size_t CopyNSStringToBuffer(NSString* source, char* buffer, const size_t bufferLen)
+    {
+        if (!buffer || !bufferLen)
+        {
+            return 0;
+        }
+
+        if (source)
+        {
+            const char* src = [source UTF8String];
+            const size_t srcLen = strlen(src);
+            if (srcLen < bufferLen - 1)
+            {
+                azstrncpy(buffer, bufferLen, src, srcLen);
+                buffer[srcLen] = '\0';
+                return srcLen;
+            }
+        }
+
+        // Could not copy the source to the destination buffer.
+        buffer[0] = '\0';
+        return 0;
+    }
+
+    ////////////////////////////////////////////////////////////////////////////////////////////////
+    // Get the path to the specified user domain directory.
+    // Returns length of the string or 0 on failure.
+    ////////////////////////////////////////////////////////////////////////////////////////////////
+    size_t GetPathToUserDirectory(NSSearchPathDirectory dir, char* buffer, const size_t bufferLen)
+    {
+        NSArray* userDomainDirectoryPaths = NSSearchPathForDirectoriesInDomains(dir, NSUserDomainMask, YES);
+        if ([userDomainDirectoryPaths count] != 0)
+        {
+            NSString* userDomainDirectoryPath = static_cast<NSString*>([userDomainDirectoryPaths objectAtIndex:0]);
+            return CopyNSStringToBuffer(userDomainDirectoryPath, buffer, bufferLen);
+        }
+        return 0;
+    }
+}
+
+////////////////////////////////////////////////////////////////////////////////////////////////////
+size_t SystemUtilsApple::GetPathToApplicationBundle(char* buffer, const size_t bufferLen)
+{
+    NSString* bundlePath = [[NSBundle mainBundle] bundlePath];
+    return SystemUtilsApplePrivate::CopyNSStringToBuffer(bundlePath, buffer, bufferLen);
+}
+
+////////////////////////////////////////////////////////////////////////////////////////////////////
+size_t SystemUtilsApple::GetPathToApplicationExecutable(char* buffer, const size_t bufferLen)
+{
+    NSString* executablePath = [[NSBundle mainBundle] executablePath];
+    return SystemUtilsApplePrivate::CopyNSStringToBuffer(executablePath, buffer, bufferLen);
+}
+
+////////////////////////////////////////////////////////////////////////////////////////////////////
+size_t SystemUtilsApple::GetPathToApplicationResources(char* buffer, const size_t bufferLen)
+{
+    NSString* resourcesPath = [[NSBundle mainBundle] resourcePath];
+    return SystemUtilsApplePrivate::CopyNSStringToBuffer(resourcesPath, buffer, bufferLen);
+}
+
+////////////////////////////////////////////////////////////////////////////////////////////////////
+size_t SystemUtilsApple::GetPathToUserApplicationSupportDirectory(char* buffer, const size_t bufferLen)
+{
+    return SystemUtilsApplePrivate::GetPathToUserDirectory(NSApplicationSupportDirectory, buffer, bufferLen);
+}
+
+////////////////////////////////////////////////////////////////////////////////////////////////////
+size_t SystemUtilsApple::GetPathToUserCachesDirectory(char* buffer, const size_t bufferLen)
+{
+    return SystemUtilsApplePrivate::GetPathToUserDirectory(NSCachesDirectory, buffer, bufferLen);
+}
+
+////////////////////////////////////////////////////////////////////////////////////////////////////
+size_t SystemUtilsApple::GetPathToUserDocumentDirectory(char* buffer, const size_t bufferLen)
+{
+    return SystemUtilsApplePrivate::GetPathToUserDirectory(NSDocumentDirectory, buffer, bufferLen);
+}
+
+////////////////////////////////////////////////////////////////////////////////////////////////////
+size_t SystemUtilsApple::GetPathToUserLibraryDirectory(char* buffer, const size_t bufferLen)
+{
+    return SystemUtilsApplePrivate::GetPathToUserDirectory(NSLibraryDirectory, buffer, bufferLen);
+}
+
+////////////////////////////////////////////////////////////////////////////////////////////////////
+size_t SystemUtilsApple::GetUserName(char* buffer, const size_t bufferLen)
+{
+    return SystemUtilsApplePrivate::CopyNSStringToBuffer(NSUserName(), buffer, bufferLen);
+}
+
+////////////////////////////////////////////////////////////////////////////////////////////////////
+AZStd::string SystemUtilsApple::GetMachineName() 
+{
+    utsname systemInfo;
+    if (uname(&systemInfo) == -1)
+    {
+        return "";
+    }
+    return systemInfo.machine;
+}

Code/Framework/AzFramework/Platform/Linux/AzFramework/Archive/ArchiveVars_Linux.h

@@ -13,4 +13,3 @@
 #pragma once
 
 #define STREAM_CACHE_DEFAULT 0
-#define FRONTEND_SHADER_CACHE_DEFAULT 0

Code/Framework/AzFramework/Platform/Mac/AzFramework/Archive/ArchiveVars_Mac.h

@@ -13,4 +13,3 @@
 #pragma once
 
 #define STREAM_CACHE_DEFAULT 0
-#define FRONTEND_SHADER_CACHE_DEFAULT 0

Code/Framework/AzFramework/Platform/Mac/AzFramework/Utils/SystemUtilsApple.h

@@ -0,0 +1,16 @@
+/*
+* All or portions of this file Copyright (c) Amazon.com, Inc. or its affiliates or
+* its licensors.
+*
+* For complete copyright and license terms please see the LICENSE at the root of this
+* distribution (the "License"). All use of this software is governed by the License,
+* or, if provided, by the license below or the license accompanying this file. Do not
+* remove or modify any license notices. This file is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+*
+*/
+// Original file Copyright Crytek GMBH or its affiliates, used under license.
+
+#pragma once
+
+#include "../../../Common/Apple/AzFramework/Utils/SystemUtilsApple.h"

Code/Framework/AzFramework/Platform/Mac/platform_mac_files.cmake

@@ -36,4 +36,6 @@ set(FILES
     ../Common/Unimplemented/AzFramework/Input/Devices/VirtualKeyboard/InputDeviceVirtualKeyboard_Unimplemented.cpp
     AzFramework/Archive/ArchiveVars_Platform.h
     AzFramework/Archive/ArchiveVars_Mac.h
+    ../Common/Apple/AzFramework/Utils/SystemUtilsApple.h
+    ../Common/Apple/AzFramework/Utils/SystemUtilsApple.mm
 )

Code/Framework/AzFramework/Platform/Windows/AzFramework/Archive/ArchiveVars_Windows.h

@@ -13,4 +13,3 @@
 #pragma once
 
 #define STREAM_CACHE_DEFAULT 0
-#define FRONTEND_SHADER_CACHE_DEFAULT 0

Code/Framework/AzFramework/Platform/iOS/AzFramework/Archive/ArchiveVars_iOS.h

@@ -13,4 +13,3 @@
 #pragma once
 
 #define STREAM_CACHE_DEFAULT 0
-#define FRONTEND_SHADER_CACHE_DEFAULT 0

Code/Framework/AzFramework/Platform/iOS/AzFramework/Utils/SystemUtilsApple.h

@@ -0,0 +1,15 @@
+/*
+* All or portions of this file Copyright (c) Amazon.com, Inc. or its affiliates or
+* its licensors.
+*
+* For complete copyright and license terms please see the LICENSE at the root of this
+* distribution (the "License"). All use of this software is governed by the License,
+* or, if provided, by the license below or the license accompanying this file. Do not
+* remove or modify any license notices. This file is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+*
+*/
+
+#pragma once
+
+#include "../../../Common/Apple/AzFramework/Utils/SystemUtilsApple.h"

Code/Framework/AzFramework/Platform/iOS/platform_ios_files.cmake

@@ -36,5 +36,7 @@ set(FILES
     AzFramework/Process/ProcessCommon.h
     AzFramework/Process/ProcessWatcher_iOS.cpp
     AzFramework/Process/ProcessCommunicator_iOS.cpp
+    ../Common/Apple/AzFramework/Utils/SystemUtilsApple.h
+    ../Common/Apple/AzFramework/Utils/SystemUtilsApple.mm
 )
 

Code/Framework/AzManipulatorTestFramework/Include/AzManipulatorTestFramework/ViewportInteraction.h

@@ -38,8 +38,9 @@ namespace AzManipulatorTestFramework
         void SetGridSize(float size) override;
         void SetAngularStep(float step) override;
         int GetViewportId() const override;
-        AZStd::optional<AZ::Vector3> ViewportScreenToWorld(const QPoint& screenPosition, float depth) override;
-        AZStd::optional<AzToolsFramework::ViewportInteraction::ProjectedViewportRay> ViewportScreenToWorldRay(const QPoint& screenPosition) override;
+        AZStd::optional<AZ::Vector3> ViewportScreenToWorld(const AzFramework::ScreenPoint& screenPosition, float depth) override;
+        AZStd::optional<AzToolsFramework::ViewportInteraction::ProjectedViewportRay> ViewportScreenToWorldRay(
+            const AzFramework::ScreenPoint& screenPosition) override;
     private:
         // ViewportInteractionRequestBus ...
         bool GridSnappingEnabled();
@@ -47,7 +48,7 @@ namespace AzManipulatorTestFramework
         bool ShowGrid();
         bool AngleSnappingEnabled();
         float AngleStep();
-        QPoint ViewportWorldToScreen(const AZ::Vector3& worldPosition);
+        AzFramework::ScreenPoint ViewportWorldToScreen(const AZ::Vector3& worldPosition);
     private:
         AZStd::unique_ptr<NullDebugDisplayRequests> m_nullDebugDisplayRequests;
         const int m_viewportId = 1234; // Arbitrary viewport id for manipulator tests

Code/Framework/AzManipulatorTestFramework/Source/ViewportInteraction.cpp

@@ -66,10 +66,9 @@ namespace AzManipulatorTestFramework
         return m_angularStep;
     }
 
-    QPoint ViewportInteraction::ViewportWorldToScreen(const AZ::Vector3& worldPosition)
+    AzFramework::ScreenPoint ViewportInteraction::ViewportWorldToScreen(const AZ::Vector3& worldPosition)
     {
-        auto pos = AzFramework::WorldToScreen(worldPosition, m_cameraState);
-        return QPoint(pos.m_x, pos.m_y);
+        return AzFramework::WorldToScreen(worldPosition, m_cameraState);
     }
 
     void ViewportInteraction::SetCameraState(const AzFramework::CameraState& cameraState)
@@ -117,12 +116,14 @@ namespace AzManipulatorTestFramework
         return m_viewportId;
     }
 
-    AZStd::optional<AZ::Vector3> ViewportInteraction::ViewportScreenToWorld([[maybe_unused]]const QPoint& screenPosition, [[maybe_unused]]float depth)
+    AZStd::optional<AZ::Vector3> ViewportInteraction::ViewportScreenToWorld(
+        [[maybe_unused]] const AzFramework::ScreenPoint& screenPosition, [[maybe_unused]] float depth)
     {
         return {};
     }
 
-    AZStd::optional<AzToolsFramework::ViewportInteraction::ProjectedViewportRay> ViewportInteraction::ViewportScreenToWorldRay([[maybe_unused]]const QPoint& screenPosition)
+    AZStd::optional<AzToolsFramework::ViewportInteraction::ProjectedViewportRay> ViewportInteraction::ViewportScreenToWorldRay(
+        [[maybe_unused]] const AzFramework::ScreenPoint& screenPosition)
     {
         return {};
     }

Code/Framework/AzNetworking/AzNetworking/Serialization/HashSerializer.cpp

@@ -19,9 +19,10 @@ namespace AzNetworking
     static const int32_t FloatHashMinValue = (INT_MIN >> 7);
     static const int32_t FloatHashMaxValue = (INT_MAX >> 7);
 
-    AZ::HashValue64 HashSerializer::GetHash() const
+    AZ::HashValue32 HashSerializer::GetHash() const
     {
-        return m_hash;
+        // Just truncate the upper bits
+        return static_cast<AZ::HashValue32>(m_hash);
     }
 
     SerializerMode HashSerializer::GetSerializerMode() const