Pipeline, Assets & I/O

General

• Improved performance when importing USD, Alembic, OBJ files with massive amounts of objects (230f72347a, 5b5811c97b, 94323bb42, 7f8d05131a, 092732d11). Importing a production USD scene with 260 thousand objects went from 3.5 hours down to 1.5 minutes.

Alembic

• The export operator can now have presets (1d668b6356)

OBJ

• Importer and exporter support .obj vertex colors now (1b4f35f6a5). Importer can import both "xyzrgb" and "#MRGB" vertex color formats; exporter optionally writes "xyzrgb" format.
• The Python based OBJ importer/exporter is marked as "legacy" in the menu item now; the new C++ based one got "experimental" label removed. Addons using bpy.ops.import_scene.obj and bpy.ops.export_scene.obj APIs are strongly encouraged to switch to bpy.ops.wm.obj_import and bpy.ops.wm.obj_export.

STL

• New experimental STL (.stl) importer (7c511f1b47). The new importer is written in C++ and is about 8 times faster than the Python importer.

USD

• OpenVDB volumes can now be exported to USD (ce3dd12371).

glTF 2.0

glTF I/O is an python addon, change logs can be retrieved on Addon page