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Geometry Nodes: Blur node speed up #109764

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Hans Goudey merged 4 commits from mod_moder/blender:tmp_cleanup_blur_tp_map into main 2023-07-10 13:47:36 +02:00
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1 changed files with 13 additions and 10 deletions
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source/blender/nodes/geometry/nodes/node_geo_blur_attribute.cc
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@ -197,27 +197,30 @@ static void build_face_to_face_by_edge_map(const OffsetIndices<int> polys,
Array<int> &r_offsets,
Array<int> &r_indices)
{
Array<int> edge_to_poly_offsets;
Array<int> edge_to_poly_offset_data;
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Hans Goudey commented 2023-07-06 14:09:09 +02:00
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offsets_data -> offset_data

`offsets_data` -> `offset_data`
Array<int> edge_to_poly_indices;
const GroupedSpan<int> edge_to_poly_map = bke::mesh::build_edge_to_poly_map(
polys, corner_edges, edges_num, edge_to_poly_offsets, edge_to_poly_indices);
polys, corner_edges, edges_num, edge_to_poly_offset_data, edge_to_poly_indices);
const OffsetIndices<int> edge_to_poly_offsets(edge_to_poly_offset_data);
r_offsets = Array<int>(polys.size() + 1, 0);
for (const int poly_i : polys.index_range()) {
threading::parallel_for(polys.index_range(), 4096, [&](const IndexRange range) {
for (const int poly_i : range) {
for (const int edge : corner_edges.slice(polys[poly_i])) {
for (const int neighbor : edge_to_poly_map[edge]) {
if (neighbor != poly_i) {
r_offsets[poly_i]++;
/* Subtract polygon itself from the number of polygons connected to the edge. */
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Hans Goudey commented 2023-07-06 14:11:18 +02:00
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/* Subtract polygon itself from the number of polygons connected to the edge. */

` /* Subtract polygon itself from the number of polygons connected to the edge. */`
r_offsets[poly_i] += edge_to_poly_offsets[edge].size() - 1;
}
}
}
}
const OffsetIndices offsets = offset_indices::accumulate_counts_to_offsets(r_offsets);
});
const OffsetIndices<int> offsets = offset_indices::accumulate_counts_to_offsets(r_offsets);
r_indices.reinitialize(offsets.total_size());
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Hans Goudey commented 2023-07-06 14:12:20 +02:00
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I'm not sure about adding these early returns. I'm not sure it would help performance for the expected case (which isn't where many faces have no neighbors)

I'm not sure about adding these early returns. I'm not sure it would help performance for the expected case (which isn't where many faces have no neighbors)
Iliya Katushenock commented 2023-07-06 14:25:24 +02:00
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Yes, it would be strange to have such an option .. But on the other hand, maybe?

Yes, it would be strange to have such an option .. But on the other hand, maybe?
Hans Goudey commented 2023-07-06 14:28:47 +02:00
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It's fine to optimize the node for the expected case. Without some measurements demonstrating these returns improve performance, I'd rather leave them to a separate commit I guess

It's fine to optimize the node for the expected case. Without some measurements demonstrating these returns improve performance, I'd rather leave them to a separate commit I guess
threading::parallel_for(polys.index_range(), 1024, [&](IndexRange range) {
for (const int poly_i : range) {
MutableSpan<int> neighbors = r_indices.as_mutable_span().slice(offsets[poly_i]);
if (neighbors.is_empty()) {
continue;
}
int count = 0;
for (const int edge : corner_edges.slice(polys[poly_i])) {
for (const int neighbor : edge_to_poly_map[edge]) {