1.4.11.0

Improvements

SetExpressions : Set Expressions containing only whitespace characters are now treated as empty rather than producing an error.
ArnoldShader :
- Added a UI layout for the new openpbr_surface shader.
- Moved Arnold 7.3.3.0’s new standard_volume.scatter_diffusion parameters to a “Scatter Diffusion” section of the UI.
Viewer : Added diagnostic shading mode for visualising the values of the usd:purpose attribute as colours :
- White : Default
- Green : Render
- Blue : Proxy
- Red : Guide
Catalogue : Added a handle for controlling the relative sizes of the listing and image property widgets.
RenderPassEditor, LightEditor : Improved update performance for certain graph configurations, by optimising SceneAlgo::history() (#5199).

Arnold : Fixed bug preventing UI metadata for Imagers from being loaded for Arnold 7.3.
WidgetAlgo : Fixed issue preventing grab() from capturing popup menus on Windows.
ShowURL : Fixed opening of “file://” URLs on Windows (#5861).
Shader : Fixed “Revert to Defaults” menu item in NodeEditor (#1862).
Catalogue :
- Fixed bug which allowed locked Catalogues to be edited.
- Fixed NodeEditor update when the first image is added or the last image is removed.
NameWidget : Fixed bug which allowed plugs on locked nodes to be renamed.
ValuePlug : Fixed the plug passed to Monitor::forceMonitoring(). Previously Process::destinationPlug() was being passed instead of Process::plug().

PathListingWidget : Added columnContextMenuSignal(), allowing multiple clients to collaborate on the creation of a column-specific context menu.
HierarchyView : Added sceneListing() method, to allow the context menu to be customised.