Jacques Lucke 3e92b4ed24 Fix T94659: crash when deleting instances
The crash was caused by using `modify_geometry_sets` to modify
instances, which does not generally work unfortunately.
The intended behavior was wrong anyway. In instances mode,
only top level instances should be deleted.

Also removed the old error handling because it doesn't look like it
ever worked. all_is_error remained false all the time.
Furthermore, updating it was not thread safe.

Differential Revision: https://developer.blender.org/D13736
2022-01-05 16:55:09 +01:00
2021-10-23 10:49:51 +05:30
2021-12-14 20:56:11 +11:00
2021-12-02 18:43:42 +01:00
2021-12-16 20:54:04 +01:00
2021-03-26 16:15:02 +01:00

.. Keep this document short & concise,
   linking to external resources instead of including content in-line.
   See 'release/text/readme.html' for the end user read-me.


Blender
=======

Blender is the free and open source 3D creation suite.
It supports the entirety of the 3D pipeline-modeling, rigging, animation, simulation, rendering, compositing,
motion tracking and video editing.

.. figure:: https://code.blender.org/wp-content/uploads/2018/12/springrg.jpg
   :scale: 50 %
   :align: center


Project Pages
-------------

- `Main Website <http://www.blender.org>`__
- `Reference Manual <https://docs.blender.org/manual/en/latest/index.html>`__
- `User Community <https://www.blender.org/community/>`__

Development
-----------

- `Build Instructions <https://wiki.blender.org/wiki/Building_Blender>`__
- `Code Review & Bug Tracker <https://developer.blender.org>`__
- `Developer Forum <https://devtalk.blender.org>`__
- `Developer Documentation <https://wiki.blender.org>`__


License
-------

Blender as a whole is licensed under the GNU General Public License, Version 3.
Individual files may have a different, but compatible license.

See `blender.org/about/license <https://www.blender.org/about/license>`__ for details.
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