Blender Git Loki

USD import: update copyright notices

USD export: improve stage creation error message

When stage creation fails, now notifying user if the
export path is already open in a USD layer,
possibly because the USD is being referenced by
modifiers and can't be overwritten.

USD export: clearer stage creation error message

Previously, the error message issued on stage creation
failure was confusing, as it suggested that a USD plugin
can't be found, which is usually not the cause of the error.

Merge branch 'nv-usd-importer' of https://gitlab-master.nvidia.com/omniverse/blender into omniverse

USD Import: add cache file only if needed

Fixed bug where a cache file was always created
for the imported USD, even when the USD has no
animation. Modified the logic to add a cache file
only if a reader requires it. This is not only
more efficient, but also avoids the problem
where we can't overwrite the USD the cachefile is
referencing because it has a pointer to the
open stage for the lifetime of the scene.

Merged latest nv-usd-importer branch.

Merge branch 'usd-importer-T81257-merge' of https://gitlab-master.nvidia.com/omniverse/blender into nv-usd-importer

Merging latest usd-importer-T81257-merge branch

USD import: convert sun angle to radians

Now converting USD distant light angle from degrees
to radians.

USD import: validate light attributes

Added checks to validate light attributes
and values, to help avoid errors when reading
light settings which might not have been
authored.

Merge branch 'nv-usd-importer' of https://gitlab-master.nvidia.com/omniverse/blender into omniverse

Merge branch 'usd-importer-T81257-merge' of https://gitlab-master.nvidia.com/omniverse/blender into nv-usd-importer

USD import: bug detecting mesh topology change

Fixed mesh reader logic detecting topology changes in mesh
sequence animations, which avoids a crash in some cases.

Merging nv-usd-importer branch.

USD importer format fix.

Merged latest usd-importer-T81257-merge branch

USD import: gray out disabled options.

Now graying out, instead of hiding, disabled options.

USD import options Experimental header alignment

Fixed alignment of the Experimental column header
to be consistent with the other options headers.

USD import: don't check for cache usdz extension.

Removed check for .usdz extension in logic to
determine cachfile type.

USD Import: removed unused variable.