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/*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* The Original Code is Copyright (C) 2020 Blender Foundation.
* All rights reserved.
*/
/** \file
* \ingroup bke
*/
#pragma once
#include <string>
#include "BLI_string_ref.hh"
namespace blender {
/* Format to a cryptomatte meta data key.
*
* Cryptomatte stores meta data. The keys are formatted containing a hash that
* is generated from its layer name.
*
* The output of this function is:
* 'cryptomatte/{hash of layer_name}/{key_name}'.
*/
std::string BKE_cryptomatte_meta_data_key(const StringRef layer_name,
const StringRefNull key_name);
/* Extract the cryptomatte layer name from the given `render_pass_name`.
*
* Cryptomatte passes are formatted with a trailing number for storing multiple samples that belong
* to the same cryptomatte layer. This function would remove the trailing numbers to determine the
* cryptomatte layer name.
*
* # Example
*
* A render_pass_name could be 'View Layer.CryptoMaterial02'. The cryptomatte layer would be 'View
* Layer.CryptoMaterial'.
*
* NOTE: The return type is a substring of `render_pass_name` and therefore cannot outlive the
* `render_pass_name` internal data.
*/
StringRef BKE_cryptomatte_extract_layer_name(const StringRef render_pass_name);
} // namespace blender
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