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blender-archive/source/blender/blenlib/intern/array_utils.cc
Mattias Fredriksson ce54f48556 BLI: Add generic utlity for gathering values with indices
Add new functions to `array_utils` namespace called `gather(..)`.
Versions of `GVArray::materialize_compressed_to_uninitialized(..)` with
threading have been reimplemented locally in multiple geometry node
contexts. The purpose of this patch is therefore to:
 * Assemble these implementations in a single file.
 * Provide a naming convention that is easier to recognize.

Differential Revision: https://developer.blender.org/D15786
2022-09-17 22:12:02 -05:00

32 lines
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C++

/* SPDX-License-Identifier: GPL-2.0-or-later */
#include "BLI_array_utils.hh"
namespace blender::array_utils {
void copy(const GVArray &src,
const IndexMask selection,
GMutableSpan dst,
const int64_t grain_size)
{
BLI_assert(src.type() == dst.type());
BLI_assert(src.size() == dst.size());
threading::parallel_for(selection.index_range(), grain_size, [&](const IndexRange range) {
src.materialize_to_uninitialized(selection.slice(range), dst.data());
});
}
void gather(const GVArray &src,
const IndexMask indices,
GMutableSpan dst,
const int64_t grain_size)
{
BLI_assert(src.type() == dst.type());
BLI_assert(indices.size() == dst.size());
threading::parallel_for(indices.index_range(), grain_size, [&](const IndexRange range) {
src.materialize_compressed_to_uninitialized(indices.slice(range), dst.slice(range).data());
});
}
} // namespace blender::array_utils