Blender Git Loki

USD Import: Fix USDGeomReader casts.

Changed reinterpret_cast() to dynamic_cast() when
casting from USDPrimReader to USDGeomReader in mesh
sequence cache modifier callbacks.

USD Import: USDGeomReader API cleanup.

Removed empty USDGeomReader create_object() and read_object_data()
functions. Made USDGeomReader::read_mesh() abstract virtual. Made
USDGeomReader::topology_changed() virtual. Marked
SDMeshReader::read_mesh() as override, to silence warnings.

USD Import: comment out unused parameters.

USD import: set material viewport display props.

Added logic to set the Blender material's viewport display
diffuse color, roughness and metallic properties from
the corresponding USD preview surface inputs.

USD import: fixed deprecated function warning.

Replaced call to deprecated UsdShadeConnectableAPI::IsShader()
to fix warning.

USD import: format fixes to option descriptions.

Per review for differential D10700.

USD Import: made local variables const.

USD Import: removed as_background_job option.

Removed deprecated option, per review for differential D10700.

USD Import: code cleanup.

Removed commented out code and code for unsupported
sequence and mesh validation options. Per review for
differential D10700.

USD Import: new usd_capi_export.cc file.

Renamed usd_capi.cc to usd_capi_export.cc,
per review for differential D10700.

USD Import: new usd_capi_import.cc file.

Moved import related code from usd_capi.cc to usd_capi_import.cc.
Per review for differential D10700.

USD/ABC Import: CacheReader function naming.

Renamed CacheReader related functions to use the ABC_ or USD_
prefixes consistently.

USD Import: removed duplicate cachefile code.

Consolidated duplicate code for USD and Alembic cachefile
types, per review for differential D10700.

USD Import: switch on all eCacheFileType enums.

Extended transformcache_evaluate() logic to handle all
eCacheFileType enums with no default. Per review for
differential D10700: Whenever a new enum value is
added in the future, the compiler will produce a warning
that it should be handled here.

USD Import: eCacheFileType typedef.

Added enum typedef and comment for CacheFile::type,
per review for D10700.

USD Import: format fix.

USD Import: cachefile handle cleanup.

Removed CacheArchiveHandle opaque struct declaration from
DNA_cachefile_types.h. Moved CacheArchiveHandle and
CacheReader declarations to a shared common/IO_types.h header.
Removed unneeded casts. Removed unneeded USDStageHandle struct.

Format fixes.

Fixed build errors.

Fixed build errors after merge with master.

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