This commit adds the ability to generate liboverrides of linked data at
the `BKE_blendfile_link_append` BKE level, and through the Python API
(the `BPY_library_load` context manager, aka `bpy.data.libraries.load`).
The python API was updated essentially to allow easy testing of the new
code. This commit also adds tests for the new 'override' behavior, and
for existing basic link one.
Current code only generates 'basic' overrides, without any handing of
hierarchies or dependencies, as for brush assets only the Brush ID needs
to be overridden.
That new feature does not aim at being exposed to user through the
link/append operations in its current state, as it is way too simplistic.
This change is a requirement for the Brush Asset project (#101908).
Pull Request #104746
This commit essentially ensures before writing .blend file that only
actualy locally used linked IDs are tagged as `LIB_TAG_EXTERN` (and
therefore get a reference stored in the .blend file).
Previously, a linked ID tagged as directly linked would never get back
to the indirectly linked status. Consequence was a lot of 'needless'
references to linked data in .blend files.
This commit also introduces a new flag for lib_query ID usage types,
`IDWALK_CB_DIRECT_WEAK_LINK`, used currently for base's Object
pointer, and for LayerCollection's Collection pointer.
NOTE: A side-effect of this patch is that even IDs explicitely linked by
the user won't be kept anymore when writing files, i.e. they will not be
there anymore after a file reload, if they are not actually used.
Overhead of new process is below 0.1% in whole file saving process in
a Heist production file e.g.
Reviewed By: brecht
Differential Revision: https://developer.blender.org/D16605
Use a shorter/simpler license convention, stops the header taking so
much space.
Follow the SPDX license specification: https://spdx.org/licenses
- C/C++/objc/objc++
- Python
- Shell Scripts
- CMake, GNUmakefile
While most of the source tree has been included
- `./extern/` was left out.
- `./intern/cycles` & `./intern/atomic` are also excluded because they
use different header conventions.
doc/license/SPDX-license-identifiers.txt has been added to list SPDX all
used identifiers.
See P2788 for the script that automated these edits.
Reviewed By: brecht, mont29, sergey
Ref D14069
According to https://docs.python.org/3/library/os.html#os.rename,
`os.rename` has os-specific behavior, and will fail in case you attempt
to rename to an existing file on windows.
So using `os.replace` instead, which should be os-agnostic.
NOTE: Fact that temp test directory is not cleared after tests are
sucessfully ran does not sound great...
Blender was not configured to exit with non-zero return code on Python errors.
A bunch of tests worked around this but not all. This removes the need for such
workarounds.
