63a44e29ac
Since UVs are now stored as 2D vectors in meshes, they can be copied directly to the vertex buffers. Somewhat surprisingly, multithreading the copying into the vertex buffer provides a good speedup-- on a CPU with many cores at least. Here is a test uploading two UV maps created in geometry nodes with a 1 million quad mesh, with a Ryzen 7950x: | | Before | After | Speedup | | ------- | ------- | ------ | ------- | | Average | 24.3 ms | 7.5 ms | 3.2x | | Min | 17.6 ms | 7.0 ms | 2.5x | I added the copying utilities to the array utils header, since the need for them has come up in a few different places already, and the existing function with a selection argument didn't make sense here. Pull Request: https://projects.blender.org/blender/blender/pulls/105793
136 lines
4.1 KiB
C++
136 lines
4.1 KiB
C++
/* SPDX-License-Identifier: GPL-2.0-or-later */
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#pragma once
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#include "BLI_generic_span.hh"
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#include "BLI_generic_virtual_array.hh"
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#include "BLI_index_mask.hh"
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#include "BLI_task.hh"
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#include "BLI_virtual_array.hh"
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namespace blender::array_utils {
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/**
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* Fill the destination span by copying all values from the `src` array. Threaded based on
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* grain-size.
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*/
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void copy(const GVArray &src, GMutableSpan dst, int64_t grain_size = 4096);
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/**
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* Fill the destination span by copying all values from the `src` array. Threaded based on
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* grain-size.
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*/
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template<typename T>
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inline void copy(const Span<T> src, MutableSpan<T> dst, const int64_t grain_size = 4096)
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{
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BLI_assert(src.size() == dst.size());
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threading::parallel_for(src.index_range(), grain_size, [&](const IndexRange range) {
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dst.slice(range).copy_from(src.slice(range));
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});
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}
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/**
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* Fill the destination span by copying masked values from the `src` array. Threaded based on
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* grain-size.
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*/
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void copy(const GVArray &src, IndexMask selection, GMutableSpan dst, int64_t grain_size = 4096);
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/**
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* Fill the destination span by copying values from the `src` array. Threaded based on
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* grain-size.
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*/
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template<typename T>
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inline void copy(const Span<T> src,
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const IndexMask selection,
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MutableSpan<T> dst,
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const int64_t grain_size = 4096)
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{
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BLI_assert(src.size() == dst.size());
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threading::parallel_for(selection.index_range(), grain_size, [&](const IndexRange range) {
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for (const int64_t index : selection.slice(range)) {
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dst[index] = src[index];
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}
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});
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}
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/**
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* Fill the destination span by gathering indexed values from the `src` array.
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*/
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void gather(const GVArray &src, IndexMask indices, GMutableSpan dst, int64_t grain_size = 4096);
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/**
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* Fill the destination span by gathering indexed values from the `src` array.
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*/
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void gather(GSpan src, IndexMask indices, GMutableSpan dst, int64_t grain_size = 4096);
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/**
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* Fill the destination span by gathering indexed values from the `src` array.
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*/
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template<typename T>
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inline void gather(const VArray<T> &src,
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const IndexMask indices,
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MutableSpan<T> dst,
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const int64_t grain_size = 4096)
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{
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BLI_assert(indices.size() == dst.size());
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threading::parallel_for(indices.index_range(), grain_size, [&](const IndexRange range) {
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src.materialize_compressed_to_uninitialized(indices.slice(range), dst.slice(range).data());
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});
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}
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/**
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* Fill the destination span by gathering indexed values from the `src` array.
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*/
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template<typename T, typename IndexT>
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inline void gather(const Span<T> src,
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const IndexMask indices,
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MutableSpan<T> dst,
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const int64_t grain_size = 4096)
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{
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BLI_assert(indices.size() == dst.size());
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threading::parallel_for(indices.index_range(), grain_size, [&](const IndexRange range) {
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for (const int64_t i : range) {
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dst[i] = src[indices[i]];
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}
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});
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}
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/**
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* Fill the destination span by gathering indexed values from the `src` array.
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*/
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template<typename T, typename IndexT>
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inline void gather(const Span<T> src,
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const Span<IndexT> indices,
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MutableSpan<T> dst,
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const int64_t grain_size = 4096)
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{
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BLI_assert(indices.size() == dst.size());
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threading::parallel_for(indices.index_range(), grain_size, [&](const IndexRange range) {
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for (const int64_t i : range) {
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dst[i] = src[indices[i]];
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}
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});
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}
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/**
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* Fill the destination span by gathering indexed values from the `src` array.
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*/
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template<typename T, typename IndexT>
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inline void gather(const VArray<T> &src,
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const Span<IndexT> indices,
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MutableSpan<T> dst,
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const int64_t grain_size = 4096)
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{
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BLI_assert(indices.size() == dst.size());
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devirtualize_varray(src, [&](const auto &src) {
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threading::parallel_for(indices.index_range(), grain_size, [&](const IndexRange range) {
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for (const int64_t i : range) {
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dst[i] = src[indices[i]];
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}
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});
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});
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}
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void invert_booleans(MutableSpan<bool> span);
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} // namespace blender::array_utils
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