New Material Editor for authoring UsdShade graphs
Dragging MDL materials to the Viewport opens Create Material Dialog to specifiy SubIdentifer material
Added thumbnail icons to material search box.
Added standard MDL search paths. MDL defines two sets of standard search paths: User-space and System-space search paths, where User-space search paths take precedence. The search paths can be configured using the MDL_USER_PATH or MDL_SYSTEM_PATH environment variables, respectively. When specifying multiple paths, paths are separated by semicolons (on Windows) or colons (on Linux and Mac OS).
If the environment variable is not set, the following default is used for the User-space search path:
%DOCUMENTS%mdl (on Windows),
$HOME/Documents/mdl (on Linux), and
$HOME/Documents/mdl (on Mac OS),
For the System-space search path:
%PROGRAMDATA%NVIDIA Corporationmdl (on Windows),
/opt/nvidia/mdl (on Linux), and
/Library/Application Support/NVIDIA Corporation/mdl (on Mac OS).
Added a Kit configuration setting “/app/mdl/nostdpath” to disable standard MDL search paths. (default false)
Added a Kit configuration setting “/app/mdl/additionalUserPaths” to add additional user paths, which take precedence over the standard MDL user-space search paths. (default empty)
Added a Kit configuration setting “/app/mdl/additionalSystemPaths” to add additional system paths, which take precedence over the standard MDL system-space search paths. (default empty)
New OmniSurface materials added to core material library
Additional Vray to MDL improvements