Geometry Nodes: Rewrite parts of extrude mesh node

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The node is still a bit non-standard in that it resizes an existing
mesh rather than creating a new one, but this commit makes the extrude
node a bit more similar to other mesh operations and makes other
miscellaneous improvements, including:
- Less use of intermediate states (compared to initial or final)
- Topology map building is no longer reimplemented for the node
- Attribute interpolation happens in a more familiar way
- Some topology maps can be skipped if a domain is empty
- More use of `IndexMask` instead of an array of indices
- Logarithmic cost index mask lookup is avoided
- Build index maps instead of implementing attribute propagation
  separately for every type

Overall these changes might improve performance in a few cases, and
they reduce Blender's binary size by 58 KB. Edge indices are different
in some cases of the edge mode, so the test files are updated.

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This commit is contained in:

Hans Goudey 2023-11-27 10:56:29 -05:00

parent f644c936b6

commit c31718649d

1 changed files with 474 additions and 467 deletions

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source/blender/nodes/geometry/nodes/node_geo_extrude_mesh.cc

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