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Cleanup: Use contiguous storage for delaunay triangulation arrays #111061

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Hans Goudey wants to merge 28 commits from HooglyBoogly/blender:delaunay-triangulate-array-format into main
pull from: HooglyBoogly/blender:delaunay-triangulate-array-format
merge into: blender:main

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Conversation 1 Commits 28 Files Changed 9 +413 -310
Hans Goudey commented 2023-08-12 04:36:20 +02:00
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Instead of using Array<Vector<T>>, use an array of offsets describing
groups in a contiguous Array<T>. This reduces memory usage by removing
the overhead of storing a Vector per element. Using contiguous memory
also gives benefits with cache locality. Recently mesh face vertices, mesh
topology maps, and curve points have been changed to use this method,
so we have existing abstractions like OffsetIndices and GroupedSpan
that make the pattern more intuitive.

The goal is to allow using more standard attribute interpolation code
for attribute interpolation in the curve fill node. Performance in the
boolean node might be slightly better too, but the bottleneck is likely
elsewhere and I didn't do performance tests there.

Instead of using `Array<Vector<T>>`, use an array of offsets describing groups in a contiguous `Array<T>`. This reduces memory usage by removing the overhead of storing a Vector per element. Using contiguous memory also gives benefits with cache locality. Recently mesh face vertices, mesh topology maps, and curve points have been changed to use this method, so we have existing abstractions like `OffsetIndices` and `GroupedSpan` that make the pattern more intuitive. The goal is to allow using more standard attribute interpolation code for attribute interpolation in the curve fill node. Performance in the boolean node might be slightly better too, but the bottleneck is likely elsewhere and I didn't do performance tests there.
🎉 4
Hans Goudey added 1 commit 2023-08-12 04:36:32 +02:00
d46607b81f Cleanup: Use contiguous storage for delaunay triangulation arrays 
Instead of using `Array<Vector<T>>`, use an array of offsets describing
groups in a contiguous `Array<T>`. This reduces memory usage by removing
the overhead of storing a Vector per element. Using contiguous memory
also gives benefits with cache locality. Recently mesh face vertices and
curve points have been changed to use this method, so we have existing
abstractions like `OffsetIndices` and `GroupedSpan` that make the
pattern more intuitive.

The goal is to allow using more standard attribute interpolation code
for attribute interpolation in the curve fill node. Performance in the
boolean node might be slightly better too, but the bottleneck is likely
elsewhere and I didn't do performance tests there.
Hans Goudey added 3 commits 2023-08-20 18:09:29 +02:00
buildbot/vexp-code-patch-coordinator Build done. Details
42014229bb Progress
Hans Goudey commented 2023-08-20 18:09:39 +02:00
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@blender-bot build

@blender-bot build
Hans Goudey added 6 commits 2023-09-14 02:12:25 +02:00
Hans Goudey added 2 commits 2023-09-18 19:35:14 +02:00
Hans Goudey added 1 commit 2023-09-18 19:42:33 +02:00
Hans Goudey added 1 commit 2023-09-18 20:46:38 +02:00
Hans Goudey added 1 commit 2023-10-06 09:58:30 +02:00
Hans Goudey added 1 commit 2023-10-20 09:51:33 +02:00
Hans Goudey added 1 commit 2023-11-15 16:38:07 +01:00
Hans Goudey added 1 commit 2023-11-15 16:45:06 +01:00
Hans Goudey added 1 commit 2023-11-28 01:04:15 +01:00
Hans Goudey added 1 commit 2023-11-28 01:30:47 +01:00
Hans Goudey added 1 commit 2023-12-14 15:55:50 +01:00
Hans Goudey added 7 commits 2023-12-14 19:51:51 +01:00
This pull request has changes conflicting with the target branch.
  • source/blender/blenlib/BLI_delaunay_2d.hh
  • source/blender/blenlib/intern/mesh_intersect.cc
  • source/blender/blenlib/tests/BLI_delaunay_2d_test.cc
  • source/blender/io/wavefront_obj/importer/importer_mesh_utils.cc
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git fetch -u delaunay-triangulate-array-format:HooglyBoogly-delaunay-triangulate-array-format
git checkout HooglyBoogly-delaunay-triangulate-array-format
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