Callbacks used in `bpy.props` didn't hold a references to the functions
they used.
While this has been the case since early 2.5x it didn't cause any
problems as long as the class held a reference.
With Python 3.10 or when using `from __future__ import annotations`,
the annotations are no longer owned by the class once evaluated.
Resolve this by holding a reference in the module, which now supports
traverse & clear callbacks so the objects are visible to Python's
garbage collector.
Also refactor storage of Python data, moving from an array into a struct.
This adds support for creating a `BlendFile` (internally called `Main`),
which is limited to a context.
Temporary data can now be created which can then use
`.libraries.load()` the same as with `bpy.data`.
To prevent errors caused by mixing the temporary ID's with data in
`bpy.data` they are tagged as temporary so they can't be assigned
to properties, however they can be passed as arguments to functions.
Reviewed By: mont29, sybren
Ref D10612
The `MAX_LIBARRAY` define was an annoying doublon to the `INDEX_ID_MAX` enum value
now defined in `DNA_ID.h`, and it is no more useful.
And comments were somewhat outdated. Also added an explanation about
chosen order for the `INDEX_ID_<IDTYPE>` order.
Replace static methods with regular methods.
Now the 'Main' value is taken from the collection.
Needed to support multiple 'Main' instances in Python, see T86183.
By default objects are no longer GC tracked, this removes some overhead
although it's not significant in my own testing.
- Only enable GC for StructRNA when 'WITH_PYTHON_SAFETY' is on.
- Only track StructRNA when their 'reference' is set.
- Add missing NULL check when 'WITH_PYTHON_SAFETY' is on
and objects new objects be created.
This API function can now purge recursively in a single call, and choose
to ignore (not purge) local or linked IDs.
Default behavior (with not argument) remains unchanged, so no API
breackage here.
When closing the blender, while the callbacks are removed, the
reference count of the object used as `customdata` is not decremented.
This commit adds two functions that correctly release the
python `draw_callbacks` before releasing all `draw_callbacks`.
Differential Revision: https://developer.blender.org/D10478
Support Python 3.10a5 or 3.9x with support explicitly enabled.
- Enable Python's postponed annotations for Blender's RNA classes
types registered on startup.
- Using postponed annotations has implications for how they are defined,
since they must evaluate in the modules name-space instead of the
classes name-space. See changes to annotations in `release/scripts`.
- Use `from __future__ import annotations` at the top of the module
to ensure the script will run with Python 3.10.
- Old logic is kept since it could be used if PEP-649 is supported.
Resolves T83626
Ref D10474
Use Python 3.8's API for setting the initial configuration.
This replaces a mix of our logic and direct calls to the Python API
and has no user visible changes.
Using the Python API makes the logic easier to follow and provides
utilities such as `PyConfig_SetBytesArgv`
that wasn't available in previous releases.
Note that this uses Python's utf8/wchar_t conversions,
which used to cause problems (see T31506).
Since `Py_UTF8Mode` was set, the systems locale isn't used for decoding,
allowing us to use Python's utility functions that call
`Py_DecodeLocale` internally.
Ref D10382
Removes two unused --debug-gpu command line flags (unused as in, does nothing):
* `--debug-gpumem`: Unused since c08d847488, the info is now available in
the status-bar if enabled in the Preferences. Initially added in
fec317de8d.
* `--debug-gpu-shaders`: Unused since 216d78687d, double checked with
Clément, he says it's not that useful nowadays. Initially added in
fec317de8d.
Addresses T83954 and T83953.
Differential Revision: https://developer.blender.org/D10244
Reviewed by: Clément Foucault
System encoding issues have been a paint-point for us with Python 3,
since Blender always uses UTF-8 which might not be the case for the OS.
While the Py_SetStandardStreamEncoding was already set to utf-8,
the file-system could still have an incompatible encoding.
See PEP-540 for details.
BPY_context_dict_clear_members_array used PyDict_DelItemString
which raised & cleared the exception when the key didn't exist.
Even though setting/clearing the exception is supported,
it's worth avoiding where possible as it adds some overhead as well as
overwriting the previous error which can free PyObject's which are
unrelated to the code being executed.
Possible fix for T82552, crashing on Windows when setting the exception.
Sometimes multiple calls to `bpy.data.orphans_purge()` are needed to
delete all orphans, because a call can turn previously-used datablocks
into orphans. Returning the number of deleted datablocks makes it
possible to keep looping until nothing can be deleted any more.
This patch keeps track of deletions in `id_delete()` so that it can be
returned up the call stack.
Reviewed By: mont29
Differential Revision: https://developer.blender.org/D9918
Remove DNA headers, using forward declarations where possible.
Also removed duplicate header, header including it's self
and unnecessary inclusion of libc system headers from BKE header.
