Fixed an issue with deserialization of feedback loop work items, when using the Python-based work item serialization format.

Revisions and improvements with using the geo stash HDA model in Topo Landmark, and finalized UI for 19.5.

Fixed channel lister filtering when following animation layers. Don't apply the TRS buttons filters to animation layer names.

Added overloads to the setagentcurrentlayers(), setagentcollisionlayers(), and setagentclips() VEX function that accept integer ids for the layers, clips etc rather than names. This makes it easier to use the ids returned by functions such as agentfindlayer().

Bumped the required license version to 19.5.

Fixed a bug where menu parms was missing mouse click events.

Curve-2.0 state now properly updates the Transform Handle on undo.

Added a "-U" option to hcustom to be used when building USD plugins with hcustom. This option alters the installation directory of the generated plugin library, and on Windows sets a compiler flag that is requires for proper initialization of USD plugins. Also added a very simple asset resolver plugin to $HT/samples/USD that can be compiled with hcustom.

Fixed hotkey processing of entries in the camera menu in the LOPs viewer, most prominently "Restore camera".

• Improved how Curve-2.0 handles caching to prevent rebuildingcurves when exiting the state or reopening a file where thecurve sop has no inputs.
• Fixed a bug in Curve-2.0 when changing the primitive typewith auto points which could result in some points beingplaced incorrectly.

Added Karma Volume VOP for building Karma XPU compatible MaterialX volume shaders.

Houdini Hair Procedural supports a deformation mode.

Fixed an environment cubemapping artifact in GL rendering.

Fixed a bug in Group Promote causing it to ignore curves when finding group boundaries. The SOP will now respect the options for finding unshared edges, and attribute boundaries on curves.

Karma Fog Box's gl proxy is now an actual wireframe, and has the same color as the rendered fog box. The internal reference was replaced, to avoid warnings/errors when exporting fog boxes.

Fixed Channel List when switching the active Animation Layer. A group name should appear in the Channel List for RigPose TRS parameters when animation layers are driving the parameters.

Updated the USD library to incorporate a fix that allows CoordSys transforms used in shaders to update when the referenced primitive is modified or time varying.

Added a new HOUDINI_PDG_SERVICE_DEBUG environment variable, which can be set to debug when service clients are used/free, and when service clients are added to the service scheduler's client list.

Documented Topo Landmark view state toolbar and updated Topo Transfer view state toolbar sections.

Loop selections now work on curves and open primities.

Fixed HAPI_SetInputCurvePositionsRotationsScales() not properly copying rotation values.

• Fixed DataTable input not being sent to Houdini if one of the DT'srow name had invalid characters.
• Fixed the Landscape ForcedMinValue/ForcedMaxValue setting being ignoredwhen converting Heightfields to Landscape.