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| author | Hans Goudey <h.goudey@me.com> | 2022-09-12 19:35:33 +0300 |
|---|---|---|
| committer | Hans Goudey <h.goudey@me.com> | 2022-09-12 19:35:33 +0300 |
| commit | 9088a1f4764f371f7f22384e7d7e2c8971d5c9f0 (patch) | |
| tree | cd67c66c9c00cf09e6ea70804c0bece324b29678 /source/blender/blenkernel/intern/mesh_convert.cc | |
| parent | 225b5a3491d9593639a80c9a34bcc017862eb2b2 (diff) | |
Geometry: Avoid unnecessary initialization when resizing data arrays
When resizing mesh and curves attribute storage, avoid initializing the
new memory for basic types. Also, avoid skipping "no free" layers; all
layers should be reallocated to the new size since they may be accessed.
The semantics introduced in 25237d2625078c6d1 are essential for this
change, because otherwise we don't have a way to construct non-trivial
types in the new memory.
In a basic test of the extrude node, I observed a performance
improvement of about 30%, from 55ms to 42ms.
Differential Revision: https://developer.blender.org/D15818
Diffstat (limited to 'source/blender/blenkernel/intern/mesh_convert.cc')
| -rw-r--r-- | source/blender/blenkernel/intern/mesh_convert.cc | 11 |
1 files changed, 7 insertions, 4 deletions
diff --git a/source/blender/blenkernel/intern/mesh_convert.cc b/source/blender/blenkernel/intern/mesh_convert.cc index b7d8972aa7b..e56df0e3fe3 100644 --- a/source/blender/blenkernel/intern/mesh_convert.cc +++ b/source/blender/blenkernel/intern/mesh_convert.cc @@ -105,8 +105,9 @@ static void make_edges_mdata_extend(Mesh &mesh) #endif if (totedge_new) { - CustomData_realloc(&mesh.edata, totedge + totedge_new); - + /* The only layer should be edges, so no other layers need to be initialized. */ + BLI_assert(mesh.edata.totlayer == 1); + CustomData_realloc(&mesh.edata, totedge, totedge + totedge_new); mesh.totedge += totedge_new; MutableSpan<MEdge> edges = mesh.edges_for_write(); MEdge *medge = &edges[totedge]; @@ -634,9 +635,11 @@ void BKE_pointcloud_from_mesh(Mesh *me, PointCloud *pointcloud) using namespace blender; BLI_assert(me != nullptr); - + /* The pointcloud should only contain the position attribute, otherwise more attributes would + * need to be initialized below. */ + BLI_assert(pointcloud->attributes().all_ids().size() == 1); + CustomData_realloc(&pointcloud->pdata, pointcloud->totpoint, me->totvert); pointcloud->totpoint = me->totvert; - CustomData_realloc(&pointcloud->pdata, pointcloud->totpoint); /* Copy over all attributes. */ CustomData_merge(&me->vdata, &pointcloud->pdata, CD_MASK_PROP_ALL, CD_DUPLICATE, me->totvert); |