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author | Hans Goudey <h.goudey@me.com> | 2021-04-22 16:05:02 +0300 |
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committer | Hans Goudey <h.goudey@me.com> | 2021-04-22 16:05:02 +0300 |
commit | b9a7b40924f6284af5867cb63078dc79c714a675 (patch) | |
tree | 76a455cc2ab73f930c3176aa0e518452d5f00a22 /source/blender/blenkernel/intern | |
parent | f6efacfec74e0c20fffc75e05007df01536d8924 (diff) |
Geometry Nodes: Get attribute domain and type without allocation
Because we use virtual classes (and for other reasons), we had to do a
small allocation when simply retrieving the data type and domain of an
existing attribute. This happened quite a lot actually-- to determine
these values for result attributes.
This patch adds a simple function to retrieve this meta data without
building the virtual array. This should lower the overhead of every
attribute node, though the difference probably won't be noticible
unless a tree has very many nodes.
Differential Revision: https://developer.blender.org/D11047
Diffstat (limited to 'source/blender/blenkernel/intern')
-rw-r--r-- | source/blender/blenkernel/intern/attribute_access.cc | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/source/blender/blenkernel/intern/attribute_access.cc b/source/blender/blenkernel/intern/attribute_access.cc index 3b2ee126d91..571763e3719 100644 --- a/source/blender/blenkernel/intern/attribute_access.cc +++ b/source/blender/blenkernel/intern/attribute_access.cc @@ -729,6 +729,20 @@ bool GeometryComponent::attribute_exists(const blender::StringRef attribute_name return false; } +std::optional<AttributeMetaData> GeometryComponent::attribute_get_meta_data( + const StringRef attribute_name) const +{ + std::optional<AttributeMetaData> result{std::nullopt}; + this->attribute_foreach([&](StringRefNull name, const AttributeMetaData &meta_data) { + if (attribute_name == name) { + result = meta_data; + return false; + } + return true; + }); + return result; +} + static std::unique_ptr<blender::fn::GVArray> try_adapt_data_type( std::unique_ptr<blender::fn::GVArray> varray, const blender::fn::CPPType &to_type) { |