51862c8445
This patch exposes the Cycles Alembic Procedural through the MeshSequenceCache modifier in order to use and test it from Blender. To enable it, one has to switch the render feature set to experimental and activate the Procedural in the modifier. An Alembic Procedural is then created for each CacheFile from Blender set to use the Procedural, and each Blender object having a MeshSequenceCache modifier is added to list of objects of the right procedural. The procedural's parameters derive from the CacheFile's properties which are already exposed in the UI through the modifier, although more Cycles specific options might be added in the future. As there is currently no cache controls and since we load all the data at the beginning of the render session, the procedural is only available during viewport renders at the moment. When an Alembic procedural is rendered, data from the archive are not read on the Blender side. If a Cycles render is not active and the CacheFile is set to use the Cycles Procedural, bounding boxes are used to display the objects in the scene as a signal that the objects are not processed by Blender anymore. This is standard in other DCCs. However this does not reduce the memory usage from Blender as the Alembic data was already loaded either during an import or during a .blend file read. This is mostly a hack to test the Cycles Alembic procedural until we have a better Blender side mechanism for letting renderers load their own geometry, which will be based on import and export settings on Collections (T68933). Ref T79174, D3089 Reviewed By: brecht, sybren Maniphest Tasks: T79174 Differential Revision: https://developer.blender.org/D10197
76 lines
2.7 KiB
C
76 lines
2.7 KiB
C
/*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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* The Original Code is Copyright (C) 2016 Blender Foundation.
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* All rights reserved.
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*/
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#pragma once
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/** \file
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* \ingroup bke
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*/
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#ifdef __cplusplus
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extern "C" {
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#endif
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struct CacheFile;
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struct CacheReader;
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struct Depsgraph;
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struct Main;
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struct Object;
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struct Scene;
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void BKE_cachefiles_init(void);
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void BKE_cachefiles_exit(void);
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void *BKE_cachefile_add(struct Main *bmain, const char *name);
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void BKE_cachefile_reload(struct Depsgraph *depsgraph, struct CacheFile *cache_file);
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void BKE_cachefile_eval(struct Main *bmain,
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struct Depsgraph *depsgraph,
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struct CacheFile *cache_file);
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bool BKE_cachefile_filepath_get(const struct Main *bmain,
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const struct Depsgraph *depsgrah,
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const struct CacheFile *cache_file,
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char r_filename[1024]);
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float BKE_cachefile_time_offset(const struct CacheFile *cache_file,
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const float time,
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const float fps);
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/* Modifiers and constraints open and free readers through these. */
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void BKE_cachefile_reader_open(struct CacheFile *cache_file,
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struct CacheReader **reader,
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struct Object *object,
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const char *object_path);
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void BKE_cachefile_reader_free(struct CacheFile *cache_file, struct CacheReader **reader);
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/* Determine whether the CacheFile should use a render engine procedural. If so, data is not read
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* from the file and bouding boxes are used to represent the objects in the Scene. Render engines
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* will receive the bounding box as a placeholder but can instead load the data directly if they
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* support it.
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*/
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bool BKE_cache_file_uses_render_procedural(const struct CacheFile *cache_file,
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struct Scene *scene,
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const int dag_eval_mode);
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#ifdef __cplusplus
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}
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#endif
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