Fixed an issue where the input object state in the HAC was not always saved when using World Partition, or one file per actor.

The package of the HoudiniAssetActor is now marked as dirty when:

• world inputs are updated,
• an input object is sent to Houdini, and
• an input object is set on a HAC input.

• Fixed a bug (in the new input system only) where Blueprint (geometry)input did not have the correct transforms applied to the geometrygenerated from its components.
• Fixed an issue (in the new input system only) where world inputs hadincorrect transforms for the input geometry generated from its componentswhen "Keep World Transform" is disabled.
• Note: These changes require storing additional information in the HDAactor's input configuration: this will trigger a once-off update/recook ofall HDAs in a map that use world input objects when the map is opened.
• Fixed a bug where geometry collection components and skeletal meshcomponents in world input had their transforms applied twice.

• Fixed a bug (in the new input system only) where Blueprint (geometry)input did not have the correct transforms applied to the geometrygenerated from its components.
• Fixed an issue (in the new input system only) where world inputs hadincorrect transforms for the input geometry generated from its componentswhen "Keep World Transform" is disabled.
• Note: These changes require storing additional information in the HDAactor's input configuration: this will trigger a once-off update/recook ofall HDAs in a map that use world input objects when the map is opened.
• Fixed a bug where geometry collection components and skeletal meshcomponents in world input had their transforms applied twice.

Fixed an issue where input settings could not be changed / set on the NodeSync panel.

• Fixed the orientation of the `rot` attribute with landscape splineinput and output: the forward direction was flipped.
• Added an interpolated orientation quaternion for non-control point pointson landscape spline curve input with the `rot` attribute.
• Identify connected segments that have the same direction, in landscapespline input, and generate the curve geometry for those segmentssequentially for more consistent point, vertex and primitive order.

Landscape spline output now applies the HoudiniAssetActor's transform when calculating the world position and rotation of the spline's control points.

• Fixed the orientation of the `rot` attribute with landscape splineinput and output: the forward direction was flipped.
• Added an interpolated orientation quaternion for non-control point pointson landscape spline curve input with the `rot` attribute.
• Identify connected segments that have the same direction, in landscapespline input, and generate the curve geometry for those segmentssequentially for more consistent point, vertex and primitive order.

• Fixed an issue where the "Prefer Nanite Fallback Mesh" input setting wasnot applied to the input meshes of instancer inputs.
• Fixed an issue where the new input system did not differentiate betweenthe high-res Nanite mesh and the fallback mesh when creating/updatinginput nodes.

Fix actor tag behaviour for cooking / baking of HDAs.

Landscape spline output now applies the HoudiniAssetActor's transform when calculating the world position and rotation of the spline's control points.

Fix unreal properties not being applied to Landscapes.

Fixed uproperties not being applied to Landscapes.

• Fixed an issue where the "Prefer Nanite Fallback Mesh" input setting wasnot applied to the input meshes of instancer inputs.
• Fixed an issue where the new input system did not differentiate betweenthe high-res Nanite mesh and the fallback mesh when creating/updatinginput nodes.

Fixed a crash when trying to load HoudiniStaticMeshes (proxies) that were saved in an older version with a different element size for the UV array.

The Serialize function of the HoudiniStaticMesh now attempts to check what the saved element size for the VertexInstanceUVs array is and then loads it as FVector2f or FVector2D depending on the size.

Fixed a bug where the "Auto Bake" functionality was no longer working with the Public API.

Fixed a bug where the "Auto Bake" functionality was no longer working with the Public API.

Added support for unreal_output_name to instancers.

unreal_output_name is now supported for instancers.

Added support for creating multiple material instances from a single material identified by distinct sets of material parameters during output translation.

The plugin now uses a new way to identify materials (which takes distinct sets of material parameter attributes into account). As a result of this, previously configured "replacement materials" on the outputs will likely have to be manually reapplied after this update.

Mesh outputs now also handle the situation where both `unreal_material` and `unreal_material_instance` attributes are present correctly: `unreal_material` is used if it is not the empty string. If it is the empty string then `unreal_material_instance` is used.

Added support for creating multiple material instances from a single material identified by distinct sets of material parameters during output translation.

The plugin now uses a new way to identify materials (which takes distinct sets of material parameter attributes into account). As a result of this, previously configured "replacement materials" on the outputs will likely have to be manually reapplied after this update.

Mesh outputs now also handle the situation where both `unreal_material` and `unreal_material_instance` attributes are present correctly: `unreal_material` is used if it is not the empty string. If it is the empty string then `unreal_material_instance` is used.

• Add asset type actions for HoudiniPreset assets.
• Add Edit Tool Properties asset type action for both HoudiniAssetsand HoudiniPresets.

Integrate HoudiniPresets with the HoudiniTools panel.

Fixed a bug with the PDG Asset Link where if there is a bypassed node in the TOP network, or a TOP node that contains child nodes, then `OnPostTOPNetworkCookDelegate` was not called.

Fixed a bug with the PDG Asset Link where if there is a bypassed node in the TOP network, or a TOP node that contains child nodes, then `OnPostTOPNetworkCookDelegate` was not called.

Fixed an issue where Map Check would fail after reloading a map containing a Physics Volume instancer.

Fixed an issue where Map Check would fail after reloading a level with a Physics Volume instancer.

Prevent a warning log message when an instancer that spawns actors (via HoudiniInstancedActorComponent) is destroyed. For each spawned actor we check that the actor's world is still valid/non-null before destroying the actor.

Prevent a warning log message when an instancer that spawns actors (via HoudiniInstancedActorComponent) is destroyed. For each spawned actor we check that the actor's world is still valid/non-null before destroying the actor.

Fixed an issue with instancer output where if both `unreal_material` and `unreal_material_instance` attributes are present, then empty string `unreal_material` values would override non-empty string `unreal_material_instance` values at the same index.

Fixed an issue with instancer output where if both `unreal_material` and `unreal_material_instance` attributes are present, then empty string `unreal_material` values would override non-empty string `unreal_material_instance` values at the same index.

Fixed a bug where the separate InstancedStaticMeshComponents of split instancers (`unreal_split_attr`) could get assigned the same material, or incorrect materials, even if each split had a distinct material assigned via `unreal_material` or `unreal_material_instance`.

Fixed a bug where the separate InstancedStaticMeshComponents of split instancers (`unreal_split_attr`) could get assigned the same material, or incorrect materials, even if each split had a distinct material assigned via `unreal_material` or `unreal_material_instance`.

Fixed camera transforms not updating when assigned to an input.

Fixed transforms not updating when a camera actor is assigned to an input.

• Fixed a bug caused by UE5.3 that broke the drag and drop of an assetfrom the content browser to the level viewport. Houdini assets are nowinstantiated as HoudiniAssetActors in the level as expected.
• Fixed UE5.3 build warnings.

• Fixed a bug caused by UE5.3 that broke the drag and drop of an assetfrom the content browser to the level viewport. Houdini assets are nowinstantiated as HoudiniAssetActors in the level as expected.
• Fixed UE5.3 build warnings.

Added comments to the Public API `InstantiateAsset`, `CreateWrapper` and `CreateEmptyWrapper` functions, as well as the Blueprint and C++ examples, about the Public API not managing the lifecycle of `UHoudiniPublicAPIAssetWrapper` after creation, and the need to use a `UProperty`/Blueprint variable to prevent garbage collection.

Added comments to the Public API `InstantiateAsset`, `CreateWrapper` and `CreateEmptyWrapper` functions, as well as the Blueprint and C++ examples, about the Public API not managing the lifecycle of `UHoudiniPublicAPIAssetWrapper` after creation, and the need to use a `UProperty`/Blueprint variable to prevent garbage collection.

Fixed paint layers being incorrectly sent to Houdini with non-square landscapes.

Fixed a bug where curve inputs were not being connected to the input Merge SOP when using the new input system.

Fixed a bug where curve inputs were not being connected to the input Merge SOP when using the new input system.

Added export of input mesh name when exporting simle collision shapes.

Added Update Preset functionality to the Houdini Asset detail panel's action menu.

• Fixed build errors on Linux (UE5)
• Fixed build warnings related to deprecated function calls when compilingagainst UE 5.3

• Fixed build errors on Linux (UE5)
• Fixed build warnings related to deprecated function calls when compilingagainst UE 5.3

Fixed ramp values not being editable when the Enter key is pressed to enter values.

Fixed a bug with static mesh input when colliders are being exported (when not using the new input system) where after the physical material Attrib Wrangle is created, the remaining nodes of export data for the static mesh, such as sockets, would be connected to the Attrib Wrangle instead of to the Merge SOP.

Fixed a bug with static mesh input when colliders are being exported (when not using the new input system) where after the physical material Attrib Wrangle is created, the remaining nodes of export data for the static mesh, such as sockets, would be connected to the Attrib Wrangle instead of to the Merge SOP.

• Fixed an issue in the new input system where node ID re-use could resultin deleting the wrong nodes in the Houdini session when recooking an HDAactor
• Fixed an issue in the new input system where recooking HDA actors that usethe same assets in their inputs could result in the object merges usingold / incorrect node paths in the Houdini session: these paths are nowupdated when uploading inputs to Houdini
• Geometry input transforms are now applied when using Blueprint assets asgeometry inputs with the new input system

Fixed an issue where ramp parameters would not update correctly when modified via a text edit box.

• Fixed an issue in the new input system where node ID re-use could resultin deleting the wrong nodes in the Houdini session when recooking an HDAactor
• Fixed an issue in the new input system where recooking HDA actors that usethe same assets in their inputs could result in the object merges usingold / incorrect node paths in the Houdini session: these paths are nowupdated when uploading inputs to Houdini
• Geometry input transforms are now applied when using Blueprint assets asgeometry inputs with the new input system

Fixed Physics Volume instancers not baking correctly.

Add curve input support to HDA presets.

Fixed Physics Volume instances not being correctly initialized when baking.

Fixed multiparms not reseting in the details panel.

Fixed parameter details not displaying correctly if tabs are hidden.

Fixed multiparams not reseting correctly.

Added support for UE 5.3.

Added support for UE 5.3.

Fixed issues with parameter visibility when hiding tabs in the details panel.

Fix multiple paint layers in the same edit layer not being cleared when modifying landscapes.

• Fixed missing material slot prefixes with material attributes in skeletalmesh input
• Material parameter attributes are now created when "Export MaterialParameters" is selected with skeletal mesh input
• Fixed an issue where the collider creation of skeletal mesh input couldfail if one or more body setups have simple physical materials
• Fixed an issue in the new input system with component level materialand physical material overrides where group filters were preventingthe overrides from being applied in some cases

• Fixed missing material slot prefixes with material attributes in skeletalmesh input
• Material parameter attributes are now created when "Export MaterialParameters" is selected with skeletal mesh input
• Fixed an issue where the collider creation of skeletal mesh input couldfail if one or more body setups have simple physical materials
• Fixed an issue in the new input system with component level materialand physical material overrides where group filters were preventingthe overrides from being applied in some cases

Add support for creating Presets from HoudiniAsset actor details panel.

• Added component level material and physical material overrides when usingworld inputs with the new input system.
• Fixed a bug where the Houdini Session crashed when using "Export Input asReferences" on world inputs with the new input system.

Fixed an issue where multipe target layers in a single edit layer would not be cleared.

Added ability to lock and unlock landscape edit layers via attributes.

Added support for writiing to locked layers and setting the layer's lock from Houdini.

Fixed a crash when baking landscapes twice that use temporary cooking layers.

Fixed a crash when baking landscapes more than once when using temporary cooking layers.

• Added component level material and physical material overrides when usingworld inputs with the new input system.
• Fixed a bug where the Houdini Session crashed when using "Export Input asReferences" on world inputs with the new input system.

Fixed multi parameter blocks not expanding.

Fixed a rare crash when changing maps with an HDA loaded.

Fixed an issue where parameter folders would expand correctly inside Editor Utility Widgets.

Fixed an issue with the PDG asset link where the references that the asset link, and related data structures, keep to work result output actors, objects and bake outputs were not always saved correctly, predominantly when using One File Per Actor in UE5.

Fixed an issue with the PDG asset link where the references that the asset link, and related data structures, keep to work result output actors, objects and bake outputs were not always saved correctly, predominantly when using One File Per Actor in UE5.

• Fixed an issue where, when landscape spline outputs were cleared, thelandscape splines component (which is the root component of a landscapespline actor) would be deleted. This could cause crashes with subsequentoperations on the landscape spline actor, such as deleting it from thelevel.
• Landscape spline output and input now use control point ids via the`unreal_landscape_spline_control_point_id` integer attribute to identifycontrol points, instead of control point names. This removes support forthe `unreal_landscape_spline_control_point_name` attribute.

Fix a crash when there is a duplicate layer when exporting height fields.

Added support for enums when using unreal_property_.

Added support for HLOD Layers.

Fixed a crash when trying to create the same landscape twice on an output node.

Added support for unreal_uproperty_ enums.

• Fixed an issue where individual "LandscapeSplineActors" were not createdcorrectly based on the "unreal_output_name" attribute when using worldpartition.
• Fixed an issue where landscape splines in PDG output were not removedcorrectly when dirtying or unloading work items.
• Track the segments and control points that are created for landscapespline temporary output and delete only those segments / control pointswhen recooking or deleting the HoudiniAssetActor.
• Added edit layer support to landscape spline output.
• Added support for baking landscape spline output.
• Added support for the "SideFalloff" and "EndFalloff" control pointproperties to landscape spline input and output.

Added support for HLOD Layers.

Fixed a bug where cooked / temporary output HoudiniInstancedActorComponents, HoudiniMeshSplitInstancerComponents and SplineComponents on the HoudiniAssetActor were not cleaned up when duplicating the actor.

Fixed a bug where cooked / temporary output HoudiniInstancedActorComponents, HoudiniMeshSplitInstancerComponents and SplineComponents on the HoudiniAssetActor were not cleaned up when duplicating the actor.

Fixed folders not expanding on paramters detail panel when using widgets.

Fixed parameter folders not expanding when embedded into a widget.

Added ability to attach foliage instances to actors in Unreal.

Added documentation for HoudiniTools.

Fixed an issue where instanced mesh transforms could be stored in the wrong order, causing custom attribute data not to align correctly.

Fixed an issue with mesh instances not storing transforms in the correct order, causing a mismatch with custom attribute data.

• Cache HDA icons as custom thumbnails for Houdini Assets during import orwhen HDA icon is changed.
• Fix SlateBrush garbage collection issue for HoudiniTools panel.
• Add Save/Cancel buttons for Edit Tool Properties panel.

Fixed a crash / ensure() condition failure when rebuilding / cooking HDA actors with instancer output in UE5.

Fixed a crash / ensure() condition failure when rebuilding / cooking HDA actors with instancer output in UE5.

Work around for Houdini Asset Component properties not expanding correctly in Editor Utility Widgets.

Work around for details panels that use the Houdini Asset Component not expanding correctly.

Added editor per-project user preferences for setting a custom Houdini location. The editor preferences can override the project's custom Houdini location settings.

Added supported for importing level instances into Houdini from Unreal.

Added include directives needed for no-PCH builds of the plug-in for UE5.