All type of assets create/modify, instance and landscape output perfo…

…rmance optimize

Intermediate/Build/Win64/UnrealEditor/Inc/HoudiniEngine/UHT/HoudiniEngine.init.gen.cpp

@@ -21,13 +21,13 @@ void EmptyLinkFunctionForGeneratedCodeHoudiniEngine_init() {}
 				SingletonFuncArray,
 				UE_ARRAY_COUNT(SingletonFuncArray),
 				PKG_CompiledIn | 0x00000040,
-				0xD7E265C0,
-				0xB058F6B5,
+				0x85A24F5C,
+				0xFCD70E75,
 				METADATA_PARAMS(0, nullptr)
 			};
 			UECodeGen_Private::ConstructUPackage(Z_Registration_Info_UPackage__Script_HoudiniEngine.OuterSingleton, PackageParams);
 		}
 		return Z_Registration_Info_UPackage__Script_HoudiniEngine.OuterSingleton;
 	}
-	static FRegisterCompiledInInfo Z_CompiledInDeferPackage_UPackage__Script_HoudiniEngine(Z_Construct_UPackage__Script_HoudiniEngine, TEXT("/Script/HoudiniEngine"), Z_Registration_Info_UPackage__Script_HoudiniEngine, CONSTRUCT_RELOAD_VERSION_INFO(FPackageReloadVersionInfo, 0xD7E265C0, 0xB058F6B5));
+	static FRegisterCompiledInInfo Z_CompiledInDeferPackage_UPackage__Script_HoudiniEngine(Z_Construct_UPackage__Script_HoudiniEngine, TEXT("/Script/HoudiniEngine"), Z_Registration_Info_UPackage__Script_HoudiniEngine, CONSTRUCT_RELOAD_VERSION_INFO(FPackageReloadVersionInfo, 0x85A24F5C, 0xFCD70E75));
 PRAGMA_ENABLE_DEPRECATION_WARNINGS

README.md

@@ -2,7 +2,7 @@
 
 Welcome to the [repository](https://github.com/AdrianPanGithub/HoudiniEngineForUnreal) for the Houdini Engine For Unreal Plugin. 
 
-This plug-in is the completely remaster of the official Houdini Engine For Unreal from zero, with similar usages but up to 2x - 15x faster data I/O performance compare to the lastest official plug-in, native World-Partition support and much more functionalities optimized for making procedural landscape and city toolset. Moreover, this plug-in provides a set of C++ API to define your own unreal classes and assets I/O translators
+This plug-in is the completely remaster of the official Houdini Engine For Unreal from zero, with similar usages but up to 2x - 15x faster data I/O performance compare to the lastest official plug-in, native World-Partition support and much more functionalities optimized for making procedural landscape and city toolset. Moreover, this plug-in provides a set of C++ API to define your own unreal classes and assets I/O translators (See [HoudiniPCGTranslator](https://github.com/AdrianPanGithub/HoudiniPCGTranslator) and [HoudiniMassTranslator](https://github.com/AdrianPanGithub/HoudiniMassTranslator))
 
 As the usage is similar, [Official Documentation](https://www.sidefx.com/docs/houdini/unreal/) is also available for this plug-in . But there are still a lot of things are different. For the concrete usage of this plug-in, please see **Usage Brief** below, also see `Resources/houdini/otls/examples` and `Source/HoudiniEngine/Public/HoudiniEngineCommon.h`
 
@@ -15,25 +15,29 @@ Support all builds of Houdini 20.5, and Unreal Engine >= 5.3.
 NOT compatible with official plug-in, and can NOT work together with official one.
 
 # Installation
-01. In this GitHub [repository](https://github.com/AdrianPanGithub/HoudiniEngineForUnreal), click **Releases** on the right side. 
+01. In this GitHub [repository](https://github.com/AdrianPanGithub/HoudiniEngineForUnreal), click [Releases](https://github.com/AdrianPanGithub/HoudiniEngineForUnreal) on the right side. 
 02. Download the Houdini Engine zip file that matches your Unreal Engine Version.  
 03. Extract the **HoudiniEngine** folder to the **Plugins** of your Unreal Project Directory.
 
     e.g. `C:/Unreal Projects/MyGameProject/Plugins/HoudiniEngine`
 
-This Plugin will automatically find the correct houdini version on your computer, or you can specify a custom Houdini installation in the plug-in settings.
+This plug-in will automatically find the correct houdini version on your computer, or you can specify a custom Houdini installation in the plug-in settings(Houdini Engine menu/Settings).
+
+N.B. But for Steam Houdini Indie, You MUST specify your steam houdini location manually, by plug-in setting: CustomHoudiniLocation, or use "HAPI_PATH" environment variable to specify your Houdini location.
 
 # Usage Brief
 
-Here's a list of extra functionalities than official plug-in:
+All official functionalities are supported by this plug-in!
+
+And here's a list of Extra functionalities than official plug-in:
 
 N.B. This list is NOT completed, for details please see `Source/HoudiniEngine/Public/HoudiniEngineCommon.h` and `Resources/houdini/otls/examples`
 
 **Common**:
 01. Provides a set of C++ API, allow writing custom I/O translator for your own unreal classes or assets
 
     See `Source/HoudiniEngine/Public/HoudiniInput.h` and `Source/HoudiniEngine/Public/HoudiniOutput.h`
-    Also see [HoudiniMassTranslator](https://github.com/AdrianPanGithub/HoudiniMassTranslator) and [HoudiniPCGTranslator](https://github.com/AdrianPanGithub/HoudiniPCGTranslator) of how to use these API.
+    Also see [HoudiniPCGTranslator](https://github.com/AdrianPanGithub/HoudiniPCGTranslator) and [HoudiniMassTranslator](https://github.com/AdrianPanGithub/HoudiniMassTranslator) of how to use these API.
 02. Finite state machine for achieving rich user interactions by only using HDA (See `Resources/houdini/otls/examples/he_example_quick_shape.hda`)
 03. Streamlined Blueprint API.
 04. Light weight, compact usage and panel widgets.
@@ -59,12 +63,13 @@ N.B. This list is NOT completed, for details please see `Source/HoudiniEngine/Pu
 07. Unreal spline input support import custom properties on your Blueprint.
 08. Texture input support.
 09. DynamicMeshComponent input support.
-10. All component type input support.
-11. All settings in the operator-path input panel could be set by parameter tags (e.g. { "check_changed", "0" }, { "unreal_ref", "1" }, See `Source/HoudiniEngine/Public/HoudiniEngineCommon.h`)
-12. Mesh inputs are packed before transform.
-13. All Input types support shared memory data transport, up to 15x faster than official shared memory session.
+10. DataAsset input support
+11. All component type input support.
+12. All settings in the operator-path input panel could be set by parameter tags (e.g. { "check_changed", "0" }, { "unreal_ref", "1" }, See `Source/HoudiniEngine/Public/HoudiniEngineCommon.h`)
+13. Mesh inputs are packed before transform.
+14. All Input types support shared memory data transport, up to 15x faster than official shared memory session.
 
-14. ... (And Much More)
+15. ... (And Much More)
 
 **Output**:
 01. Allow output special mesh and curves that could edit directly in unreal editor (See `Resources/houdini/otls/examples/he_example_quick_shape.hda`)
@@ -78,7 +83,9 @@ N.B. This list is NOT completed, for details please see `Source/HoudiniEngine/Pu
 09. Landscape output support shared memory output (6x faster than official shared-memory session, need to add my sharedmemory_volumeoutput Sop to your HDA)
 10. Support instantiate USceneComponent derived Classes(e.g. SplineMeshComponent, PointLightComponent etc. See `Resources/houdini/otls/examples/he_example_spline_mesh_output.hda`).
 11. Geometry Collection (Chaos) output as instancers (s@unreal_output_instance_type = "GC"), all of the settings on UGeometryCollection could be set by unreal_uproperty_*, also support split and partial output (See `Resources/houdini/otls/examples/he_example_chaos_geometry_collection_output.hda`).
-12. Support Static/AnimatedSparseVolumeTexture (VDBs) output
-13. Support Dynamic Mesh (Geometry Script, s@unreal_output_mesh_type = "dynamic") Output
+12. Standalone MaterialInstance asset output (s@unreal_material_instance and @unreal_material_parameter_*, but on points, See `Resources/houdini/otls/examples/he_example_vdb_output.hda`)
+13. All assets (including DataAsset) support create or modify by HDA output (See `Resources/houdini/otls/examples/he_example_split_actors.hda`, using s@unreal_object_path ("having class prefix" means create, otherwise, means modify), d@unreal_object_metadata, @unreal_uproperty_*).
+14. Support Dynamic Mesh (Geometry Script, s@unreal_output_mesh_type = "dynamic") output.
+15. Static/AnimatedSparseVolumeTexture (VDBs) output support.
 
-14. ... (And Much More)
+16. ... (And Much More)

Source/HoudiniEngine/Public/HoudiniAttribute.h

@@ -40,18 +40,18 @@ class HOUDINIENGINE_API FHoudiniAttribute
 	static bool FindPropertyRecursive(const UStruct* Struct, const FString& PropertyName,
 		const TSharedPtr<FEditPropertyChain>& PropertyChain, size_t& OutOffset);
 
-	void SetPropertyValues(void* TargetPtr, const UStruct* TargetStruct,
-		const TSharedPtr<FEditPropertyChain>& PropertyChain, void* ContainerPtr, const int32& Index) const;
-
-	FORCEINLINE bool IsRestrictString() const { return Storage == HAPI_STORAGETYPE_STRING || Storage == HAPI_STORAGETYPE_STRING_ARRAY; }
+	FORCEINLINE bool IsRestrictString() const { return ((Storage == HAPI_STORAGETYPE_STRING) || (Storage == HAPI_STORAGETYPE_STRING_ARRAY)); }
 
-public:
 	static const TArray<FName> SupportStructNames;
 
 	static const uint8 SupportStructTupleSize[];
 
-	static const EHoudiniDataType SupportStructElemType[];
+	static const EHoudiniDataType SupportStructDataType[];
+
+	static const FName SoftObjectPathName;
+	static const FName SoftClassPathName;
 
+public:
 	static void ResetPropertiesMaps();  // Call after hot-reload
 
 	static void ClearBlueprintProperties();  // Will be called after output process finished
@@ -60,7 +60,10 @@ class HOUDINIENGINE_API FHoudiniAttribute
 		const int AttribCounts[HAPI_ATTROWNER_MAX], const char* AttributePrefix, TArray<TSharedPtr<FHoudiniAttribute>>& OutAttribs);
 
 	static bool FindProperty(const UStruct* Struct, const FString& PropertyName,
-		TSharedPtr<FEditPropertyChain>& OutFoundPropertyChain, size_t& OutOffset, const bool& bVerbose);
+		TSharedPtr<FEditPropertyChain>& OutFoundPropertyChain, size_t& OutOffset, const bool& bVerbose);  // Low level API, should only be used when batch set structs
+
+	void SetPropertyValues(void* TargetPtr, const UStruct* TargetStruct,
+		const TSharedPtr<FEditPropertyChain>& PropertyChain, void* ContainerPtr, const int32& Index) const;  // Low level API, should only be used when batch set structs
 
 	bool SetStructPropertyValues(void* StructPtr, const UStruct* Struct, const int32& Index, const bool& bVerbose = false) const;
 

Source/HoudiniEngine/Public/HoudiniEngine.h

@@ -121,7 +121,7 @@ class HOUDINIENGINE_API FHoudiniEngine : public IModuleInterface
 	FORCEINLINE void FinishHoudiniMainTaskMessage() const { HoudiniMainTaskMessageEvent.Broadcast(-1.0f, FText::GetEmpty()); }
 
 	// -------- Input/Output Builder --------
-	// The register order of houdini engine itself: SkeletalMesh < Texture2D < FoliageType_InstancedStaticMesh < Blueprint < DataTable < StaticMesh
+	// The register order of houdini engine itself: SkeletalMesh < DataAsset < Texture2D < FoliageType_InstancedStaticMesh < Blueprint < DataTable < StaticMesh
 	FORCEINLINE void RegisterInputBuilder(const TSharedPtr<IHoudiniContentInputBuilder>& Builder) { ContentInputBuilders.AddUnique(Builder); }
 
 	FORCEINLINE void UnregisterInputBuilder(const TSharedPtr<IHoudiniContentInputBuilder>& Builder) { ContentInputBuilders.Remove(Builder); }
@@ -135,7 +135,7 @@ class HOUDINIENGINE_API FHoudiniEngine : public IModuleInterface
 
 	FORCEINLINE const TArray<TSharedPtr<IHoudiniComponentInputBuilder>>& GetComponentInputBuilders() const { return ComponentInputBuilders; }
 
-	// The register order of houdini engine itself: Landscape < Instancer < Curve < Mesh < SkeletalMesh(KineFX) < Texture(Image and VDB) < DataTable
+	// The register order of houdini engine itself: Landscape < Instancer < Asset < Curve < Mesh < SkeletalMesh(KineFX) < MaterialInstance < Texture(Image and VDB) < DataTable
 	FORCEINLINE void RegisterOutputBuilder(const TSharedPtr<IHoudiniOutputBuilder>& Builder) { OutputBuilders.AddUnique(Builder); }
 
 	FORCEINLINE void UnregisterOutputBuilder(const TSharedPtr<IHoudiniOutputBuilder>& Builder) { OutputBuilders.Remove(Builder); }

Source/HoudiniEngine/Public/HoudiniEngineCommon.h

@@ -376,7 +376,9 @@ TEXT("");
 #define HAPI_PARM_TAG_UNREAL_REF_FILTER                     "unreal_ref_filter"
 
 #define HAPI_PARM_TAG_NUM_INPUT_OBJECTS			            "num_input_objects"  // For content input, <= 0 means dynamic num objects
+#define HAPI_PARM_TAG_IMPORT_RENDER_DATA                    "import_render_data"  // Will import nanite fallback mesh
 #define HAPI_PARM_TAG_LOD_IMPORT_METHOD                     "lod_import_method"
+#define HAPI_PARM_TAG_COLLISION_IMPORT_METHOD               "collision_import_method"
 #define HAPI_PARM_TAG_CURVE_COLOR                           "curve_color"
 #define HAPI_PARM_TAG_IMPORT_ROT_AND_SCALE                  "import_rot_and_scale"
 #define HAPI_PARM_TAG_IMPORT_COLLOSION_INFO                 "import_collision_info"

Source/HoudiniEngine/Public/HoudiniEngineUtils.h

@@ -94,12 +94,10 @@ struct HOUDINIENGINE_API FHoudiniEngineUtils
 
 	static FString GetPackagePath(const FString& AssetPath);  // like "/Game/HoudiniEngine/SM_Test"
 
-protected:
 	static UObject* FindOrCreateAsset(const UClass* AssetClass, const FString& AssetPath, bool* bOutFound = nullptr);
 
 	static UObject* CreateAsset(const UClass* AssetClass, const FString& AssetPath);
 
-public:
 	template<typename TAssetClass>
 	FORCEINLINE static TAssetClass* FindOrCreateAsset(const FString& AssetPath, bool* bOutFound = nullptr)  // Will try to reuse exist asset if found
 	{
@@ -118,7 +116,7 @@ struct HOUDINIENGINE_API FHoudiniEngineUtils
 
 	static void NotifyAssetChanged(const UObject* Asset);
 
-	static bool FilterClass(const UObject* Asset, const TArray<const UClass*>& AllowClasses, const TArray<const UClass*>& DisallowClasses);
+	static bool FilterClass(const TArray<const UClass*>& AllowClasses, const TArray<const UClass*>& DisallowClasses, const UClass* ObjectClass);
 
 
 	// -------- Misc ---------

Source/HoudiniEngine/Public/HoudiniInput.h

@@ -136,7 +136,7 @@ struct HOUDINIENGINE_API FHoudiniInputSettings  // All of the settings could set
 
 	bool HapiParseFromParameterTags(UHoudiniInput* Input, const int32& NodeId, const int32 ParmId);
 
-	void GetFilterClasses(TArray<const UClass*>& OutAllowClasses, TArray<const UClass*>& OutDisallowClasses, const bool& bIsActorClass) const;
+	void GetFilterClasses(TArray<const UClass*>& OutAllowClasses, TArray<const UClass*>& OutDisallowClasses, const UClass* ParentClass = nullptr) const;
 
 	bool FilterActorTags(const AActor* Actor) const;
 };
@@ -337,7 +337,7 @@ class HOUDINIENGINE_API UHoudiniInputHolder : public UObject
 };
 
 // Inherit from builder and register using FHoudiniEngine::RegisterInputBuilder
-// The register order of houdini engine itself: SkeletalMesh < Texture2D < FoliageType_InstancedStaticMesh < Blueprint < DataTable < StaticMesh
+// The register order of houdini engine itself: SkeletalMesh < DataAsset < Texture2D < FoliageType_InstancedStaticMesh < Blueprint < DataTable < StaticMesh
 class HOUDINIENGINE_API IHoudiniContentInputBuilder
 {
 public:

Source/HoudiniEngine/Public/HoudiniOutput.h

@@ -45,7 +45,7 @@ class HOUDINIENGINE_API UHoudiniOutput : public UObject  // Outer must be AHoudi
 };
 
 // Inherit from builder and register using FHoudiniEngine::RegisterOutputBuilder
-// The register order of houdini engine itself: Landscape < Instancer < Curve < Mesh < SkeletalMesh(KineFX) < Texture(Image and VDB) < DataTable
+// The register order of houdini engine itself: Landscape < Instancer < Asset < Curve < Mesh < SkeletalMesh(KineFX) < MaterialInstance < Texture(Image and VDB) < DataTable
 class HOUDINIENGINE_API IHoudiniOutputBuilder
 {
 public:

Source/HoudiniEngine/Public/HoudiniOutputUtils.h

@@ -12,6 +12,8 @@ class AHoudiniNode;
 class ALandscape;
 class FHoudiniAttribute;
 
+#define POINT_ATTRIB_ENTRY_IDX(OWNER, POINT_INDEX) ((OWNER == HAPI_ATTROWNER_DETAIL) ? 0 : POINT_INDEX)
+
 #define GET_SPLIT_VALUE_STR SplitValueMap.IsEmpty() ? FString::FromInt(SplitKey) : SplitValueMap[SplitKey]
 
 #define SET_OBJECT_UPROPERTIES(OBJECT, ATTRIB_INDEX) for (const TSharedPtr<FHoudiniAttribute>& PropAttrib : PropAttribs)\
@@ -87,6 +89,8 @@ struct HOUDINIENGINE_API FHoudiniOutputUtils
 	static void CloseData(const float* Data, const size_t& SHMHandle);  // If SHMHandle is 0, means Data was from malloc
 
 	// -------- Geoemetry --------
+	static int32 CurveAttributeEntryIdx(const HAPI_AttributeOwner& AttribOwner, const int32& VtxIdx, const int32& CurveIdx);
+
 	// Find SplitAttrib based on "unreal_split_attr"
 	static bool HapiGetSplitValues(const int32& NodeId, const int32& PartId, const TArray<std::string>& AttribNames, const int AttribCounts[HAPI_ATTROWNER_MAX],
 		TArray<int32>& OutSplitKeys, TMap<int32, FString>& OutSplitValueMap, HAPI_AttributeOwner& InOutOwner);  // SplitValueMap will be empty is split values is int