Fixed a bug where Houdini failed to create black-boxed HDAs when choosing Asset -> Create Black Boxed Asset from Selection from the main menubar.

Fixed a bug where enabling/disabling the lighting override might cause headlight shading to be extra bright.

Fixed a bug where the Python Pillow package failed to import in the Houdini Python 3.7 build on Windows.

Fixed an issue with work item attributes and intrinsics evaluating to an incorrect value when used in the Disk File path of a Mantra ROP cooked using a ROP Fetch TOP.

The ROP Fetch TOP node will now set the per-frame active work item before the target ROP runs its pre-frame script hook, which makes it valid to call pdg.workItem() from the script hook. This change only affects batch work items, which typically have a different active work item for each frame.

The hou.RopNode.addRenderEventCallback(..) method now acceptes an optional boolean argument that determines whether the callback should be invoked before or after the regular ROP script callbacks.

TissueSolverVellum has changed the way sliding is constrained. In previous versions, a sliding constraint was established between the outer surface layer and the internal target geometry and core surface. An additional constraint attached the same surface points to the target as a means of limiting the slide distance that the surface was allowed to travel. As of this release, the slide limiting constraint is now applied to the innermost surface of the tissue constraining it to the core surface. This will eliminate the tentpoling anomamalie that would sometimes arise from a slidelimit distance that was greater than the current constraint length.

The Attribute Create TOP now has a parameter that determines whether or not a work item's input files are copied to its output file list. By default, copying is only done if the Attribute Create does not introduce any new output files itself. This makes the Attribute Create have the same behavior as the Python Script TOP, which already has a similar parameter.

Houdini Engine for 3ds Max now supports 3ds Max 2023.

Fixed a bug where the server was not correctly tracking stats with the legacy communication protocol.

RBD Guide setup now works with unpacked geometry, however, a warning is now emitted when this happens as it is generally recommended to setup the guides on packed RBD geometry to avoid time-dependent packing.

Fix default argument bug with hou.Geometry.execute() where calling it without the `inputs` argument would keep adding the geometry to a global instance default list argument causing two problems: a) The geometry itself would never be freed since the default argument is global, and b) the list of used inputs for executing the verb would keep a growing, across ALL calls to the function.

This code path happened to be called continuously in the Rig Pose state while a handle was visible when tumbling. So over time, the global default argument would keep growing leading to noticeably slower FPS viewport rates.

Fixed an issue with the work item MMB menu hanging until the work item finishes cook, in cases where the work item runs a blocking, in-process Python task.

Fixed and issue with distant lights with scale

• The plugin now uses sanitized paths from the AssetImportData for Houdini Assets.This fixes "source asset files not found" issues when using the pluginon a different machine that the one that originally imported the asset.

Fixed a regression in the Bullet solver for 19.5 where emitted objects could behave incorrectly if the 'rest' attribute was a different value than 'P' (describing a position transform with an initial translation).

Added new pdg.EventType.NodeGenerated and pdg.EventType.NodeCooked event types to track when a node is done generating and cooking.

Fixed a bug where the launchers hkey was not loading the fonts.

Fixed a bug where opening help from the dashbox crashed Houdini.

Added PY_CallMethod.h header to HDK include directory to allow building the HoudiniUsdBridge.

Update Houdini's USD library to include a patch from Pixar which fixes an issue with memory mapping. It is now possible to open an arbitrarily large number of arbitrarily large USD files simultaneously.

The rotation handle in Path Deform now properly updates its rotation when changing node parameters and entering the state.

Fixed a MaterialX menu parameter update issue in the viewer for GL.

Ragdoll Collision Shapes SOP: fixed an issue where the rig tree would show up all items as disabled while in the node's state if the group parm was left empty.