Fixed a bug where any python state or handle handler functions expected to return a boolean value that did not actually have a return statement would randomly behave as either returning True or returning False.

Added warnings to the Viewer State Browser and Viewer Handle Browser debug logs if the onKeyTransitEvent() and onKeyEvent() handlers return None and fixed types in the existing debug messages.

New Karma and UsdMaterialX Subnets will inherit from a class prim. This sets materials up for larger-scale overrides.

Karma Material Subnet now includes a Karma Material Properties VOP.

Fixed macOS-only checks in Houdini that failed to detect the Apple GPU on M1 and M2 machines. This resulted in a viewport performance hit for some use cases.

Added hou.GeometrySpreadsheet.setViewOnlySelected() to control the geometry spreadsheet's "Only Show Selected" option.

Added hou.GeometrySpreadsheet.setViewOnlySelected() to control the geometry spreadsheet's "Only Show Selected" option.

Fixed a bug where houdini native volume filled with a constant value would be a voxel larger in each dimension than it should be.

Fixed a bug where houdini native volume filled with a constant value would be a voxel larger in each dimension than it should be.

• Fixed a bug in muscle to bone tangent stiffness.Tangent Stiffness is now working as expected.

Karma Hair shader now clamps "tint" to 0->1 (matching XPU)

• Fixed issues that caused transform handles to not handle rotations properly.
• Fixed an issue that caused incorrect values being used when manually enteringscale/rotation for handles in the details panel.
• Handles now display their name and type on the editor viewport.

• Fixed issues that caused transform handles to not handle rotations properly.
• Fixed an issue that caused incorrect values being used when manually enteringscale/rotation for handles in the details panel.
• Handles now display their name and type on the editor viewport.

• Fixed issues that caused transform handles to not handle rotations properly.
• Fixed an issue that caused incorrect values being used when manually enteringscale/rotation for handles in the details panel.
• Handles now display their name and type on the editor viewport.

The Poly Hinge state now has guides to show the rotation angle as well as the start and end rotation postions while interacting with the rotate gadget.

Fixed scales and offsets for Karma Room Map.

Fixed an issue with the Curve state that would unexpectedly snap tangent handles when dragged to the drag plane going through the center point, and fixed an issue preventing the shift key from properly constraining movement while dragging points.

Karma now performs better interpolation for transforms that have rotational motion blur.

Removed obsolete Save Preview item from the File menu in MPlay.

Removed obsolete Save Preview item from the File menu in MPlay.

Added hou.GeometrySpreadsheet.setAttribType() to control whether point / vertex / prim / detail attributes are being displayed in the spreadsheet.

Fixed potential crashing when saving and loading .hip files containing code in the Python Source Editor.

Updated Houdini's USD library to incorporate a fix for an issue that could cause crashes when displaying UsdSkel prims

Fixed potential crashing when saving and loading .hip files containing code in the Python Source Editor.