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Fix #117515: Geometry Nodes: Count of unique face neighbors #118848

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Hans Goudey merged 4 commits from mod_moder/blender:tmp_change_face_neighboards_num into main 2024-04-14 01:08:23 +02:00
Conversation 1 Commits 4 Files Changed 1 +44 -13
Iliya Katushenock commented 2024-02-28 13:42:16 +01:00
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Regular topology mapping does not care about deduplication of relations. And
this is correct for a lot of the case where we expect creating difference of this
relations in next operations. But this is not the case for users, since this should
be actually trivial info. Due to this reason, construct full topology map and count
number of unique connections. Performance side: difference linear check and
hash set for different sizes of connections set.

Regular topology mapping does not care about deduplication of relations. And this is correct for a lot of the case where we expect creating difference of this relations in next operations. But this is not the case for users, since this should be actually trivial info. Due to this reason, construct full topology map and count number of unique connections. Performance side: difference linear check and hash set for different sizes of connections set.
Face Neighbors Node Bug.blend
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Iliya Katushenock added the
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Geometry Nodes
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Iliya Katushenock added this to the Nodes & Physics project 2024-02-28 13:42:36 +01:00
Iliya Katushenock changed title from Fix #1133939: Geometry Nodes: Count of unique face neighbors to Fix #117515: Geometry Nodes: Count of unique face neighbors 2024-02-28 13:43:22 +01:00
Jacques Lucke reviewed 2024-02-28 22:12:19 +01:00
source/blender/nodes/geometry/nodes/node_geo_input_mesh_face_neighbors.cc Outdated
@ -34,1 +33,3 @@
face_count[face_index] += edge_count[edge] - 1;
Array<int> face_count(face_edges.size());
threading::parallel_for(face_edges.index_range(), 2048, [&](const IndexRange range) {
Set<int, 16> faces;
Jacques Lucke commented 2024-02-28 22:12:18 +01:00
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Can you if this is faster if you use a Vector<int, 16> with append_non_duplicates as long as there are only very few edges? Might even be worth to optimize this for the case of triangles and quads to completely remove the need for the temporary set.

Can you if this is faster if you use a `Vector<int, 16>` with `append_non_duplicates` as long as there are only very few edges? Might even be worth to optimize this for the case of triangles and quads to completely remove the need for the temporary set.
Iliya Katushenock commented 2024-02-28 22:27:57 +01:00
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100-face connected edge stars still can be there, it is really faster to do not use Set in such case?

100-face connected edge stars still can be there, it is really faster to do not use Set in such case?
Jacques Lucke commented 2024-02-28 22:31:52 +01:00
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No, but that's why I'm saying that there can be an optimized code path for the case when a face has few edges.

No, but that's why I'm saying that there can be an optimized code path for the case when a face has few edges.
Iliya Katushenock commented 2024-02-29 19:54:25 +01:00
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Timer 'build_edge_to_face_map': (Average: 94.76 ms, Min: 87.78 ms, Last: 91.32 ms)

Timer 'face_count: Set': (Average: 45.45 ms, Min: 43.29 ms, Last: 44.13 ms)
Timer 'face_count: Vector': (Average: 30.72 ms, Min: 26.79 ms, Last: 27.73 ms)
Timer 'face_count: unique_num': (Average: 37.44 ms, Min: 34.96 ms, Last: 36.54 ms)

Timer 'build_edge_to_face_map': (Average: 94.76 ms, Min: 87.78 ms, Last: 91.32 ms) Timer 'face_count: Set': (Average: 45.45 ms, Min: 43.29 ms, Last: 44.13 ms) Timer 'face_count: Vector': (Average: 30.72 ms, Min: 26.79 ms, Last: 27.73 ms) Timer 'face_count: unique_num': (Average: 37.44 ms, Min: 34.96 ms, Last: 36.54 ms)
Hans Goudey requested changes 2024-03-12 16:53:18 +01:00
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source/blender/nodes/geometry/nodes/node_geo_input_mesh_face_neighbors.cc Outdated
@ -21,3 +24,3 @@
}
static VArray<int> construct_neighbor_count_varray(const Mesh &mesh, const AttrDomain domain)
static bool enught_large_total(const GroupedSpan<int> values,
Hans Goudey commented 2024-03-12 16:53:06 +01:00
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Grammar: large_enough_total_size

Grammar: `large_enough_total_size`
mod_moder marked this conversation as resolved
source/blender/nodes/geometry/nodes/node_geo_input_mesh_face_neighbors.cc Outdated
@ -38,0 +46,4 @@
}
return unique_values.size();
}
else {
Hans Goudey commented 2024-03-12 16:51:49 +01:00
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else after return is unnecessary

else after return is unnecessary
Hans Goudey commented 2024-03-12 21:58:07 +01:00
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Looks like this isn't resolved right now

Looks like this isn't resolved right now
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source/blender/nodes/geometry/nodes/node_geo_input_mesh_face_neighbors.cc Outdated
@ -38,0 +64,4 @@
GroupedSpan<int> edge_to_faces_map;
{
SCOPED_TIMER_AVERAGED("build_edge_to_face_map");
Hans Goudey commented 2024-03-12 16:53:15 +01:00
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I guess these timers can be removed now

I guess these timers can be removed now
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mod_moder marked this conversation as resolved
mod_moder changed target branch from main to blender-v4.1-release 2024-03-12 19:14:25 +01:00
Iliya Katushenock force-pushed tmp_change_face_neighboards_num from 3b2aa03d93 to 2a5b5a4123 2024-03-12 19:14:36 +01:00 Compare
Iliya Katushenock requested review from Hans Goudey 2024-03-12 19:15:08 +01:00
Iliya Katushenock added 1 commit 2024-03-13 10:50:15 +01:00
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Hans Goudey approved these changes 2024-04-10 21:46:32 +02:00
Hans Goudey commented 2024-04-10 21:46:51 +02:00
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@blender-bot build

@blender-bot build
mod_moder changed target branch from blender-v4.1-release to main 2024-04-14 00:55:12 +02:00
Iliya Katushenock force-pushed tmp_change_face_neighboards_num from c52461f7ab to aa04229ddc 2024-04-14 00:55:34 +02:00 Compare
Hans Goudey merged commit dd672c38b1 into main 2024-04-14 01:08:23 +02:00
Iliya Katushenock deleted branch tmp_change_face_neighboards_num 2024-04-14 01:09:03 +02:00
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