b279a6d703
This removes `AnonymousAttributeID` which was "attached" to every anonymous attribute before. It adds more complexity than is justified for its functionality. It was originally introduced to keep the reference count of the anonymous attribute so that it can be deleted automatically when the attribute is not referenced anymore. For quite some time we have had deterministic attribute life-times though which don't rely on the reference count anymore. Anonymous attributes are sometimes shown in the UI as "friendly looking" string like `"UV Map" from Cube`. Some information necessary for this was also stored in `AnonymousAttributeID`. However, this can also be solved differently. Specifically, this functionality has now been added directly to `AttributeFieldInput`. This refactor also allows removing `AttributeIDRef` which was mainly introduced because we had to keep the `AnonymousAttributeID` attached with the attribute name. Just using simple string types to identify attributes can reduce the mental overhead quite significantly. This will be done as a separate refactor though. Pull Request: https://projects.blender.org/blender/blender/pulls/127081
74 lines
2.6 KiB
C++
74 lines
2.6 KiB
C++
/* SPDX-FileCopyrightText: 2023 Blender Authors
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*
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* SPDX-License-Identifier: GPL-2.0-or-later */
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#pragma once
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#include "BLI_function_ref.hh"
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#include "DNA_node_types.h"
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#include "BKE_bake_items.hh"
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#include "BKE_geometry_fields.hh"
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namespace blender::bke::bake {
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/**
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* Describes how bake items should be mapped to sockets.
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*/
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struct BakeSocketConfig {
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/** The type of every socket. */
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Vector<eNodeSocketDatatype> types;
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/**
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* The domain on which an the attribute corresponding to the socket should be stored (only used
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* for some socket types).
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*/
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Vector<AttrDomain> domains;
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/** User-defined name of every socket. */
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Vector<StringRef> names;
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/**
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* Determines which geometries a field socket should be evaluated on. This can be used to
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* implement rules like a field should only be evaluated on the preceding or on all geometries.
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*/
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Vector<Vector<int, 1>> geometries_by_attribute;
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};
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/**
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* Create new bake items from the socket values. The socket values are not destructed, but they may
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* be in a moved-from state afterwards.
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*/
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Array<std::unique_ptr<BakeItem>> move_socket_values_to_bake_items(
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Span<void *> socket_values, const BakeSocketConfig &config, BakeDataBlockMap *data_block_map);
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/**
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* Create socket values from bake items.
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* - The data stored in the bake items may be in a moved-from state afterwards. Therefore, this
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* should only be used when the bake items are not needed afterwards anymore.
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* - If a socket does not have a corresponding bake item, it's initialized to its default value.
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*
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* \param make_attribute_field: A function that creates a field input for any anonymous attributes
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* being created for the baked data.
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* \param r_socket_values: The caller is expected to allocate (but not construct) the output
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* values. All socket values are constructed in this function.
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*/
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void move_bake_items_to_socket_values(
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Span<BakeItem *> bake_items,
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const BakeSocketConfig &config,
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BakeDataBlockMap *data_block_map,
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FunctionRef<std::shared_ptr<AttributeFieldInput>(int socket_index, const CPPType &)>
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make_attribute_field,
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Span<void *> r_socket_values);
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/**
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* Similar to #move_bake_items_to_socket_values, but does not change the bake items. Hence, this
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* should be used when the bake items are still used later on.
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*/
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void copy_bake_items_to_socket_values(
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Span<const BakeItem *> bake_items,
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const BakeSocketConfig &config,
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BakeDataBlockMap *data_block_map,
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FunctionRef<std::shared_ptr<AttributeFieldInput>(int, const CPPType &)> make_attribute_field,
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Span<void *> r_socket_values);
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} // namespace blender::bke::bake
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