Fixed a bug causing $HIP, $HIPFILE, and $HIPNAME to not properly update when calling hou.hipFile.saveAndIncrementFileName() during the first name bump (e.g. name.hip -> name1.hip).

Fixed a bug introduced in 21.0.548 that would cause render delegates to be created twice in rapid succession.

Fixed an issue where PCG nodes would not update the number of inputs when an HDA changes in Session Sync.

Fix erroneous cook error in Joint Deform and Bone Deform SOP nodes when the input geometry's position attribute is in 64-bit precision, or if a deforming attribute's precision changes on the next cook.

Fixed a crash when using the Noise<Float,Float> apex node.

Fixed a bug where selections on primitive instances would continue displaying after being cleared

Fixed a bug in the RBD Bullet Solver SOP's constraint breaking "At Frame" which would ignore the specified constraint names.

Add an option to tabbed multiparms and ramps that allows them to receive UI-only changes to their parameter callbacks.

Fixed a bug when stitching deep images that had a data window that included overscan or cropped data. This also affected the itilestitch command line tool.

Fix the scene graph layers pane to resolve layers using the current stage's asset resolver context, so the resolved layers being displayed will match the layers resolved on the stage.

Muscle Tension Lines Activate SOP viewer state improvements.

• Line ID text display matches selection highlighting more closely.
• Better handling of Line ID text positioning to reduce overlaps.
• Parameters added to control Line ID text font size and random offset.
• Keyboard shortcut added to toggle line colour between activation and ID.
• Group list widget size no longer resets when entering the state.
• Group list widget colour display is off by default.

Fixed the "Import SOP Nodes" button on the APEX Graph SOP. It now properly sets up connections between the imported SOP verbs.

Fixed a bug where some pick ID render passes wouldn't respect the option to ignore backfaces

Houdini clone processes are now able to work with Storm-like renderers (immediate mode rendering with OpenGL). Storm still does not appear in the list of available clone renderers, but custom render delegates with similar designs can now be used with clones.

Houdini clone processes are now able to work with Storm-like renderers (immediate mode rendering with OpenGL). Storm still does not appear in the list of available clone renderers, but custom render delegates with similar designs can now be used with clones.

Add support for overriding file parameters of MaterialX Image nodes in the Vulkan viewport

In the Rig Tree pane, added right-mouse menu option to "Copy as Full Path".

Fixed bugs in the skel::EvaluateMotionClip and skel::EvaluateMotionClipArray APEX callbacks that would cause the output to evaluate incorrectly on evaluations after the first.

Fixed a bug where many tools in the animate state would be slightly delayed in applying their effect while posing.

pic, picni, and res expression functions are documented as being old-COPs only.

Fixed a bug where geomprop readers on materials assigned to geom subsets would fail to read arbitrarily named primvars in offline renders.

Fixed bug in SOP GLTF Animation Import that would cause a skeletal animation to import incorrectly when the skeleton contained a mix of animated joints with transforms defined by individual TRS components and static joints with transforms defined by matrices.

The Karma LOP will now respect the usedicingcamera toggle.

Fixed a bug where cryptomatte layers would have broken data around tile boundaries when using husk's auto-tile feature.