3d9155eb0a
Point Caches (used by particle system, cloth, boids etc.) are now always compressed, uzing zstd coupled with lossless data filtering. - This is both smaller cache files _and_ faster than the old "Heavy" compression mode, - And smaller data files and same or slightly faster speed than using no compression at all, - There was not much difference between compression levels once data filtering got added, so option to pick them was removed. - So there's no downside to just always using the compression, which makes for a simpler UI. - RNA change: removes PointCache.compression property. More details and cache size / performance numbers in the PR. Pull Request: https://projects.blender.org/blender/blender/pulls/144356
45 lines
967 B
C++
45 lines
967 B
C++
/* SPDX-FileCopyrightText: 2025 Blender Authors
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*
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* SPDX-License-Identifier: GPL-2.0-or-later */
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/** \file
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* \ingroup bli
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*/
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#include "BLI_compression.hh"
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namespace blender {
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void filter_transpose_delta(const uint8_t *src, uint8_t *dst, size_t items_num, size_t item_size)
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{
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for (size_t ib = 0; ib < item_size; ib++) {
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uint8_t prev = 0;
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const uint8_t *src_ptr = src + ib;
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size_t it = 0;
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for (; it < items_num; it++) {
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uint8_t v = *src_ptr;
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*dst = v - prev;
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prev = v;
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src_ptr += item_size;
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dst += 1;
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}
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}
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}
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void unfilter_transpose_delta(const uint8_t *src, uint8_t *dst, size_t items_num, size_t item_size)
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{
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for (size_t ib = 0; ib < item_size; ib++) {
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uint8_t prev = 0;
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uint8_t *dst_ptr = dst + ib;
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for (size_t it = 0; it < items_num; it++) {
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uint8_t v = *src + prev;
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prev = v;
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*dst_ptr = v;
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src += 1;
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dst_ptr += item_size;
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}
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}
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}
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} // namespace blender
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