Fixed issues with the hou.qt.ParmDialog() HOM class popping out of position in the widget layout.

Fixed MaterialX Standard_surface shader outputting wrong colours when metalness parameter is non-zero.

Fixed a bug in file rename top node, renaming happens now during cook instead of generate.

Fixed a bug where errors raised during execution of event callback scripts could be picked up as node synchronization errors during a "Match Current Definition" operation.

Fixed an issue where defining custom node info templates could cause the TOPs node info window to break.

Converted Karma-specific API schemas for extending lights, cameras, and geometry primitives to be "codeless" schemas. This means they have no C++ or python APIs, but it also means that they can be used with other USD libraries without having to compile any code.

Added a preference to control whether or not the viewport is allowed to load and display payloads that have been explicitly excluded from loading by a Configure Stage LOP.

Added the ability to use python to construct "post-layers" on a LOP Network. These are USD layers that are stronger than any LOP-authored layers, and which are composed onto the viewport stage, and the LOP authored stage viewed in the scene graph tree and output by the USD and USD Render ROPs.

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

The Volume Trail SOP is now verbified.

Color parameters can now be set from the MaxScript API.

Updated the delete operation in Curve-2.0 SOP to work with rounded corners, and fixed a couple bugs with the delete operation that could result in degenerate curves.

Added render region support for render delegates in the LOPs 3D viewport, by Shift+LMB dragging while in the 2D mode of the View state. This only affects delegates that use the AOV interface.

When DOPs interpolates geometry, if an id attribute is present for points this will be used for interpolation.

Added new option for all snapping modes to control whether we snap to the current geometry, defaulting to on. Cannot be enabled for grid snapping.

Fixed highlighting of points prims in LOPs when selected.

Some UI changes to make Launcher GUI less confusing. Modified Engine Plug-Ins Install Options dialog to better imply that "For Houdini" combo box is for only Maya plug-in installation. Also removed "Packages" tab on Preferences dialog, which isn't needed for now.

In Curve-2.0 SOP, changed the draw modes to make points smooth when initially placed, added the ability to end curves with MMB, and changed the behavior when snapping closed in auto-draw mode to also adjust the first tangent of the curve to create a smoother result.

Fixed MaterialX dielectric_bsdf node under transmission mode ignoring tint and using incorrect IOR on backface hits.

Added the ROP Karma Render TOP, which is a standard ROP wrapper made using a Karma ROP and ROP Fetch TOP.

The time stamp for log messages written to a work item's internal log buffer now include milliseconds.

The Volume Rasterize Lattice SOP now produces less noisy results in some situations.

Lit Spheres particle mode now renders as points in wireframe.