eabff37483
A few places already calculated vertex normals with better contextual information to improve performance. To allow changing the storage of vertex normals more (mostly for improved caching), change some code from "get normals, set values, clear dirty flag" to "make vertex normals data, give to mesh". This makes the API less awkward too, since previously the "get for write" and "clear dirty" calls always had to be separated. Pull Request: https://projects.blender.org/blender/blender/pulls/110754