The Vellum Solver will now use the identity rotation of {0, 0, 0, 1} for any orientation pins with Match Animation enabled, when the target geometry does not actually have an orient attribute. Previously in that situation the solver would use {0, 0, 0, 0}, which could lead to NANs with the OpenCL CPU driver.

The Vellum Solver will now use the identity rotation of {0, 0, 0, 1} for any orientation pins with Match Animation enabled, when the target geometry does not actually have an orient attribute. Previously in that situation the solver would use {0, 0, 0, 0}, which could lead to NANs with the OpenCL CPU driver.

The Vellum Solver will now use the identity rotation of {0, 0, 0, 1} for any orientation pins with Match Animation enabled, when the target geometry does not actually have an orient attribute. Previously in that situation the solver would use {0, 0, 0, 0}, which could lead to NANs with the OpenCL CPU driver.

The Vellum Solver will now use the identity rotation of {0, 0, 0, 1} for any orientation pins with Match Animation enabled, when the target geometry does not actually have an orient attribute. Previously in that situation the solver would use {0, 0, 0, 0}, which could lead to NANs with the OpenCL CPU driver.

Fixed a bug in the Vellum Constraints SOP that could compute the wrong orientation for a Soft orientation pin on the last vertex of a hair, if the previous vertex was not also in the specified point group.

Fixed a bug in the Vellum Constraints SOP that could compute the wrong orientation for a Soft orientation pin on the last vertex of a hair, if the previous vertex was not also in the specified point group.

Fixed a bug in the Vellum Constraints SOP that could compute the wrong orientation for a Soft orientation pin on the last vertex of a hair, if the previous vertex was not also in the specified point group.

Fixed a bug in the Vellum Constraints SOP that could compute the wrong orientation for a Soft orientation pin on the last vertex of a hair, if the previous vertex was not also in the specified point group.

Fixed a bug in the Vellum Constraints SOP that could compute the wrong orientation for a Soft orientation pin on the last vertex of a hair, if the previous vertex was not also in the specified point group.

For HAPI, fixed the case where PDG events were being emitted for deleted nodes at Houdini Engine session clean up.

For HAPI, fixed the case where PDG events were being emitted for deleted nodes at Houdini Engine session clean up.

For HAPI, fixed the case where PDG events were being emitted for deleted nodes at Houdini Engine session clean up.

For HAPI, fixed the case where PDG events were being emitted for deleted nodes at Houdini Engine session clean up.

For HAPI, fixed the case where PDG events were being emitted for deleted nodes at Houdini Engine session clean up.

Changed the Blend behavior in VellumRestBlend DOP to normalize the blend amount over time, and so that 1.0 blend always blends fully regardless of substeps and FPS. Note that this change is not backward compatible with previous Blend values.