(UE5) Fixed a regression that caused cooked/temporary data to become invisible when in game/PIE mode.

• Fixed materials assigned to a landscape being duplicated when baking.

• Fixed bug that caused World Inputs to sometimes not detect that their input object/actorshad changed, preventing the HDA from automatically updating.
• Improved how world inputs track/detect spline components modifications.

• Fixed mesh input objects never cleaning up their materials array,slowly bloating up the size of the Houdini Asset Component.This should reduce the memory usage of the plugin when using any HDAthat has input meshes.
• Fixed crash when outputting a mesh that used the "unreal_uproperty_collisionprofilename" attribute.

• Fixed manually entered transform still being pushed to Houdini evenwhen "Push Transform to Houdini" is disabled.

• Fixed a bug that caused UploadTransformToHoudini to only work when

CookOnTransformChange was enabled.

• Houdini Proxy Meshes are now enabled by default.

• Fixed rot/scale attributes being ignored when outputing curves to SplineComponents.
• Fixed material parameter attributes (unreal_material_parameter_*) not being created on inputs.

• Partially loaded input landscapes will now correctly send transformsto Houdini.
• Fix height offset issue with input landscapes.
• Fix HoudiniAssetComponent cook-on-transform-change regression.

• Fix crash when baking a non-editlayer landscape.
• Improve detection of newly baked levels when WorldComposition is enabled.

Fixed a bug (UE5 only) where mesh translation would crash if the mesh had a k-DOP collision primitive.

Fix issue where baking Landscapes with edit layers to sublevels can cause UE to crash.

Fixed crash when using ButtonStrip parameters.

Fixed potentially invalid pointer access in the custom detail / UI panels.

Fix issue where saving a level in World Composition mode would trigger a recook of HDAs.

Fix issue where UE4.27 failed to output landscapes from HDAs.

Set Static Mesh's Collision Trace Flag to Use Complex as Simple when assigning collision geometry.

Fixed a bug with static mesh translation where output attributes, such as unreal_output_name, would not always be correctly processed if the mesh has LOD or collision groups.

• Fix issue where landscape height offset would be applied twice whensending landscape data to Houdini.
• Ensure landscape transform is updated when performing Recommit Landscape.

Heightfield/Landscape data is now sent/received in chunks when bigger than thrift's max buffer size.

• Merged PR#151 on behalf of Mystfit :Fixed some RHS float type mismatches against the UE5-main branch.
• Merged PR#148 on behalf of dearamy :Fix UE5 Crash when input asset is a datatable.

The plugin will now proactively check for failures when starting Houdini SessionSync instead of waiting for the timeout.

Fixed a bug where viewing the details panel of a HoudiniAssetComponent with a PDG asset link would crash Unreal (only in UE5).

• Fixed the HE session being lost after Playing In Editor when not using Session Sync.The session is now properly restarted.
• Fixed linux build issue.

• Fixed not being able to have different "unreal_nanite_enabled" states in the same HDA.It is now possible to output both nanite and regular meshes in the same HDA.The other nanite attributes do not enable nanite, and the "unreal_nanite_enabled" attributemust now be present (and non zero) to output a nanite mesh.

Only set Landscape layer NoWeightBlend option if a LayerInfo is created for the first time or if an attribute is present.

Fixed a bug with instancing assets where assets were not always loaded from disk when not in memory.

Fixed a bug where baking landscape tiles as normal landscape actors (with the unreal_landscape_tile_actor_type attribute set to 0) to sublevels would create streaming proxies in the sublevels instead of landscape actors.

Fixed a bug where the StaticMesh translator would read point attributes from an incorrect point index.

Fixed a bug with baking static mesh outputs where temporary complex collision meshes (the collision_geo group) would not be baked.

Fixed a bug where the Temporary Cook Folder property on the HoudiniAssetComponent and the unreal_temp_folder attribute were not working correctly.

Initialize collision profile on newly created static mesh components to match that of the HoudiniAssetComponent.

Add unreal_landscape_layer_noweightblend and unreal_landscape_editlayer_subtractive attributes for landscape edit layers.

Apply CollisionProfileName uproperty to generated static meshes.

• Landscape Modify Edit Layer output mode is now able to output multipleedit layers.
• Fix possible crash during Landscape output cleanup.
• Fix issue where certain editor tools (such as Landscape Flatten tool)would constantly trigger HDA updates for landscape inputs.

Added a new attribute, unreal_bake_actor_class, that can be used to set the class of the Actor that is spawned when baking to actors. If unreal_bake_actor_class is blank or missing, then an AActor is spawned.

Static mesh generation properties and mesh build settings from the HoudiniAssetComponent are now also used for static meshes generated by PDG.

Fix crash when HDA output node has template flag enabled.

When PIE stops, only reconnect Houdini session if it was previously connected.

Fixed an issue with applying generic UProperty attributes to source models on static meshes where only the first source model's UProperties were updated. Additionally, generic attributes now only trigger updates on the corresponding UProperties if the current and new values are different.

Approximate simple box and capsule collider rotations when importing static mesh collision geometry into Unreal.

Input object transform offsets are now accessed by input object index in Public API Geometry inputs.

Fixed a bug causing the plugin to create an extra empty Blueprint when importing BGEO files.

Fixed rotation transform issues for box collider input

Fix issue where HDA wouldn't update when an input actor is deleted.

• Prevent cooking of HDAs cooking during PIE except for HDAs that arerefining geometry.
• Disable HoudiniEngineManager ticking during PIE after refinement hascompleted.

Fixed an issue where input nodes were not cleaned up in the session.

• Prevent modifying non-editlayer landscapes when using theModify Layer output mode.
• Fix tracking of transform changes, as well as transform uploading issues,of non-root components in World Input objects.
• Fix transform updating for Spline components.

Ensure that all data from all output nodes are being output.

Version 2:

• Fixed an issue where nodes for world input actors were always recreatedon update
• Fixed an issue where landscape input transform changes were not appliedcorrectly

Version 2: Fix BSP transform issue.

When removing temporary PDG outputs the plugin now also uses the HoudiniAssetComponent's GUID in the package metadata to determine if the output asset may be deleted.

Fixed an issue where collision presets were not being saved from the plugin settings

Version 2: Properly name visibility layer when sending heightfield data to Houdini.

Updated how the plugin tries to detect if an HDA should have a PDGAssetLink created. The plugin now simply looks for non scheduler/non bypassed TOP nodes in the asset. Previously it would look for TOP nodes inside all the non bypassed TOP/SOP network, which in some case drastically increased the HDA instantiation time, even for asset without any TOP nodes.

• Fixed issues regarding exported input capsule colliders with rotations.
• Fixed issues regarding exported input translation/rotation/scale of convex collider collisions.

The generated mesh output now properly uses the collision complexity from the Houdini Mesh Generation Properties. A side effect of this is that the default collision complexity behaviour is now CTF_UseDefault instead of CTF_UseComplexAsSimple.

Fixed an issue where data tables with invalid names (spaces or colons) would not marshall data into Houdini Engine.

Version 2:

• Added a new attribute, unreal_force_instancer, that can be used to ensurethat an instancer component is created even if there is only a singleinstance of a StaticMesh.
• If unreal_foliage, unreal_split_instances or unreal_hierarchical_instanceris set and not 0, then the particular instancer type is created even ifthere is only a single instance of the StaticMesh.

Version 2:

• Fix issue where the HDA wouldn't properly switch between editable andnon-editable curve.
• Fix cleanup issue of Houdini Spline input objects in Houdini sessions.

• For landscape inputs, added the option to marshall only selected landscapes, and auto-select landscapes within asset bounds
• Added "Update selected components" button, that updates the selected components to the current landscape selection

Version 2:

• Fixed an issue during baking where the baked actors of the work items ofa TOP node in the PDG asset link were not shared with the remaining workitems on the TOP node.
• Fixed an issue when processing a spline/curve from Houdini whereattributes such as unreal_output_name and unreal_bake_actor were notalways updated when the HDA was cooked more than once, resulting inbaking producing incorrect output names / bake actor names.
• If unreal_bake_actor is not set for a spline / curve we nowuse unreal_output_name to determine the bake actor name.
• Improved how work items of TOP nodes are associated with previous cook /bake data in the PDG asset link.
• Fixed various cases where after a successful bake the plug-in incorrectlyreported that 0 packages were created and/or updated.

Version 2: Fix output updating and HDA cooking issues that can occur when using Session Sync.

By default, the plugin now uses the output nodes found in a HDA instead of the display flag.\

Fixed an issue where nested empty folders might crash Unreal or Houdini Engine

Fixed landscape tile resizing in Generate mode.

Houdini to Unreal StaticMesh translation: fixed an issue where duplicate warnings would be logged in Unreal for meshes with invalid face / vertex data, for each index that is invalid.

Version 2:

• Fix issue where HDA would fail to produce output if HDA is a Sop/Subnetwith display flag set on an output node and Use Output Nodes is enabled.

Version 2:

• Added support for the unreal_bake_name attribute that can be used to setthe name of the object(s) generated during baking. The unreal_output_nameattribute takes precedence.
• When baking Houdini Instanced Actor Components the unreal_output_name(or unreal_bake_name) attribute, if set, is now used to determine thebaked instance actor names.
• When baking Houdini Instanced Actor Components the instanced object nameis now used as the default bake name instead of the HDA actor's name(if the unreal_output_name and unreal_bake_name attributes are not set).
• Houdini Instanced Actor Components now support the unreal_bake_actorattribute when baking: the instanced actors are attached tounreal_bake_actor (which is created as an empty actor or re-used from aprevious bake depending on the replacement mode).

Version 2:

• Fix unreal_landscape_editlayer_target attribute for Landscape Modify mode.
• Fix landscape input targeting using Input0, Input1, etc.
• Fix Landscape edit layer transforms in Modify mode.

Version 2:

• It is now possible to set the default directory used in the browse dialog for File parameters by using the "default_dir" Parameter tag.
• Fixed a crash when trying to assign object path properties via generic attributes with an invalid path.

Version 2:

• UE5: Fixed an issue where bake to actor would fail and not create anybaked actors / assets

Version 2:

• Fixed loading of PDG output regression.

Version 2:

• Fixed an issue where input updates/changes via the public API,especially with curve inputs, would not always take effect.
• Updated the public API documentation to mention that the API returnscopies of the input configuration of an HDA and that to apply changes theSetInputAtIndex() or SetInputParameter() functions must be used.

Fixed material update issue for tiled landscapes.

Version 2:

• Initial support for generation of landscapes with edit layers (usingGenerate output mode).
• Fixed various issues with Modify landscape output mode.
• Add support for edit layer attributes on heightfield primitives.
• Fix issue where temp landscapes were not spawned in the HAC's level.
• Fix issue where HDA would output from hidden or nested subnets.
• Fix handling of output data between Display nodes and Output nodes tomatch Houdini's internal behaviour.

Version 2:

• All UHoudiniPublicAPIInput classes are now API exported in the C++ PublicAPI
• Fixed setting multiparm parameters via the Public API
• AHoudiniAssetActor is now public in C++

Version 2

• Fixed a regression that caused rebuilds to fail with "Fatal error - invalid".

Version 2:

• UE5: Fixed "double cooking" issue when instantiating a new HDA by draggingit on the viewport (UE5 specific).Like in UE4, the HDA is only cooked after being dropped.

• Fixed Wrong tooltip on Landscape Input "Update Landscape Data"

(UE5) Added support for controlling Nanite settings via attributes:

• "unreal_nanite_enabled" (int, 0 or 1 ) can be used to enable Nanite processing when building a StaticMesh.
• "unreal_nanite_position_precision" (int) can be used to set the position precision.Step size is 2^(-Value) cm
• "unreal_nanite_percent_triangles" (float [0 1]) can be used to control the percentage of triangles to keep from LOD0.1.0 = no reduction, 0.0 = no triangles.

Fixed include/accessibility issues with the C++ Public API.

Version 2: added support for Unreal 4.27 on windows.

• Fixed an issue where changing asset input type with a cook error wouldn't allow you to do it - This is an issue for HDAs with minimum inputs.

Version 2:

• Optimized reading of attributes.
• Fixed a bug preventing changing MeshGeneration properties via the details UI.
• The plugin now logs the detailled connection error when failing to create a session.
• Fixed a possible instantiation loop when rebuilding a loaded indie HDA without an indie license.
• Fixed the Houdini Engine status incorrectly reporting a license failure after attempting to use an indie asset with a commercial license.
• The plugin is now using the HAPI GetStringBatch() function when retrieving string arrays from HAPI.This is slightly faster than retrieving each string separately.
• The plugin is now using HAPI's LoadGeoFromFile() function when importing bgeo files instead of manually using a file sop.

• Added support for instancer material instances
• Additionally added support for baking instancers with material instances
• Working for all instancer baking types except foliage due to foliage material being closely tied to the static mesh
• Removed unneccessary parameters from internal functions
• Added an accessor to HoudiniMeshSplitInstancerComponent to be able to get override materials.

• Fixed an issue where material instances were not being generated upon baking with static meshes and landscapes.

Fixed an issue where having a multiparm operator path and then a regular operator path would mess up the input asset order when you add or remove objects.

Fixed an issue where unreal_material_instance was not being applied on landscape outputs.

The Plugin Settings menu will now indicate if a Houdini Engine for Unity/Unreal license is checked out.

Version 2: Added support for output nodes. When the "use output node" option is enabled, the plugin will mow also use output nodes found in the HDA alongside the display node to produce results.

Fixed an issue where float ramp parameters were causing a Slate crash.

Fixed issue where invisible folders were incorrectly detected, resulting in other missing parameters

Fixed an issue where disabling folders and rebuilding would change all the parameters in that folder to their default values.

Version 2:

• Fixed Houdini Materials and Textures being recreated/converted multiple times if the same material was assigned to multiple parts.This was easily the case when using packed primitives. This greatly improve cook times on assets that generate unreal materials from Houdini materials.
• Fixed HDAs not recreating/updating their output meshes when only a Part had changed.This could be the case for example when just modifying a houdini material parameter, but not the actual geometry.

Use the help URL instead of the help string if it is enabled.

• Fixed an issue where BSP input would invoke a recook at the start of every unreal session. Note that you have to recook and save the map again for this fix to be applied.
• Fixed an issue where HDAs with editable curves and mesh outputs were not being recooked properly at the start of an unreal session.

Version 2:

• Fixed incorrect material assignment when splitting instancers.
• The Instancer Translator now stores and uses the original instance indices.This fixes a lot of issues where attributes would not be read/applied properlywhen splitting instancers. (ie, generic attributes, tags..)

• The Houdini proxy meshes now supports calculating normals if the output meshfrom the HDA did not provide any.This fixes render differences with the refined Static Mesh.
• Fixed the Houdini icon displayed above Houdini ProxyMeshes not always being placedproperly.
• Public API: The various Set*ParameterValue functions now return false only ifan error occurs or an invalid value is given.Previously the functions also returned false if the parameter already had the new value,which was not the expected behaviour.

Fix Color Parameter not opening Color Picker

Version 2:

• Added a new plugin setting to select the executable (houdini/fx/core/hindie)to be used when opening Session Sync or debug hip files.
• Fixed a bug where the Dirtying of a node, or all outputs, on the PDG asset linkcould delete non-temp assets used as output objects (ie, when using "unreal_instance").The PDG Asset Link now only cleans Houdini generated objects (temp, not baked).