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Instead of creating a new mesh from scratch, modify an existing mesh. This allows us to keep derived caches for triangulation and bounds alive more easily, and allows keeping materials and non-generic attributes like vertex groups alive on the mesh. It also has other performance benefits, since face and face corner attributes aren't affected at all, and because of reduced overhead from not allocating a new mesh. Updating edge attributes is a bit more complicated now, since we have to completely replace the arrays but keep the existing attribute IDs around. The new mesh update tag is also slightly too specific IMO. But I think both of those things will improve in the future because of existing plans for further refactoring these areas: - New attribute storage that gives pointer stability - Further use and granularity of mesh update tagging that will make the correct API more clear Fixes T102711 Differential Revision: https://developer.blender.org/D16615
.. 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.