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blender-archive/source/blender/editors/asset/ED_asset_import.h
Julian Eisel a958ae36e8 Fix #104305: Crash in node editor with large asset libraries
Various UI code would store the `AssetHandle` in a way that turns out to
be unsafe. The file-data is part of the file browser caching system that
releases file-data when a certain maximum of items is in the cache. So
even while just iterating over the assets, earlier iterated asset
handles may become invalid. Now asset handles are really treated as
volatile, short lived objects.

For the asset-view, the fix was more involved. There we need an RNA
collection of asset-handles, because the UI list code requires that. So
we create a dummy collection and get the asset handles as needed by
index. This again meant that I had to keep the index of the collection
and the asset-list in sync, so all filtering had to be moved to the UI
list.
I tried duplicating the file-data out of the cache instead, but that
caused problems with managing the memory/ownership of the preview
images.

`AssetHandle` should be removed and replaced by `AssetRepresentation`,
but this would be an even more disruptive change (breaking API
compatibility too).

Fixes #104305, #105535.

Pull Request: #105773
2023-03-16 15:40:31 +01:00

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C++

/* SPDX-License-Identifier: GPL-2.0-or-later */
/** \file
* \ingroup edasset
*/
#pragma once
#include "DNA_ID_enums.h"
struct AssetRepresentation;
struct Main;
#ifdef __cplusplus
extern "C" {
#endif
struct ID *ED_asset_get_local_id_from_asset_or_append_and_reuse(
struct Main *bmain, const struct AssetRepresentation *asset_c_ptr, ID_Type idtype);
#ifdef __cplusplus
}
#endif