Reduced the amount of filesystem activity while loading expanded HDAs.

Fixed an issue with MaterialX materials where materials wouldn't update in the viewport when rewired, if the new layout was identical to another existing material

Fixed a visual error where wireover lines would affect the blending of underlying geometry, when drawing transparent primitives, in certain render modes

Fix crash that could occur when applying a detail Cd attribute to instanced prims

Fix issues with soloing instanceable geometry in the LOP Scene Graph Tree.

Fix some MaterialX materials failing to generate glsl shaders

Fix issues with soloing instanceable geometry in the LOP Scene Graph Tree.

Fixed a recent regression where Houdini failed to launch on Linux if Houdini was installed with the old installer.

Fix issues with soloing instanceable geometry in the LOP Scene Graph Tree.

Fixed a bug in the Lattice from Volume SOP that prevented it from creating attributes for all input volumes.

Fixed a bug in the Lattice from Volume SOP that prevented it from creating attributes for all input volumes.

Fix modifier keys on drag and drop operations from a native Qt widget in Houdini.

Fixed a rare crash when loading agent clips from some command line tools such as `geodiff`.

When switching from a LOP scene viewer pane tab to another pane tab, or maximizing a pane tab in the desktop, we now pause the renderer instead of terminating it (we still terminate if the renderer does not support pausing). This way the render doesn't need to restart when the scene viewer tab becomes visible again.

Fixed an issue in point deform that was preventing it from being compiled when using a piece attribute.

XPU: fixed an issue where the lowest (ie most high-res) image would get temporarily loaded into memory for very high-res images (ie >= 64Kx64K)

XPU: fixed an issue where the lowest (ie most high-res) image would get temporarily loaded into memory for very high-res images (ie >= 64Kx64K)

Fixed an issue in the crowd procedural which could lead to slow rendering performance in Hydra 2 when many background agents are converted into instances of deformed geometry. An empty skel:animationSource relationship is now authored for thse instances after baking skinning for the prototype, since this relationship affects instance aggregation in Hydra 2.

Updated Houdini's USD library with patches to fix a couple issues with UsdSkel and Hydra 2. Normals are now computed post-skinning to match the Hydra 1.0 behavior (previously, the undeformed normals from the rest geometry were passed through). Fixed missing geometry when rendering UsdSkel in Karma with motion blur enabled.

Moved hou.LopNode.network() to hou.Node.network(), which is now an alias of hou.Node.creator().

Backporting r507656: Customised Layout LOP's gallery buttons for basic add/delete prototypes actions, removed filters and datasource buttons, fixed prior QT signal issue for prototype deletion

Physical Sky and Dome working lights no longer render incorrectly when AO or Shadows are enabled in the viewer.

Finger finger flip selector option on the meta hand for the rig state

Fixed a bug in the `skel::GetAncestors` and `skel::GetDescendants` APEX callbacks that would cause Houdini to crash when the input geometry was not a skeleton.

Fixed a bug in the animate state where transient constraints would not bake to new layers properly.