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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.
*
* Copyright 2021, Blender Foundation.
*/
#pragma once
#include "COM_defines.h"
namespace blender::compositor {
class NodeOperation;
class NodeOperationBuilder;
class ConstantOperation;
class MemoryBuffer;
/**
* Evaluates all operations with constant elements into primitive constant operations
* (Value/Vector/Color).
*/
class ConstantFolder {
private:
NodeOperationBuilder &operations_builder_;
/** Constant operations buffers. */
Map<ConstantOperation *, MemoryBuffer *> constant_buffers_;
rcti max_area_;
rcti first_elem_area_;
public:
ConstantFolder(NodeOperationBuilder &operations_builder);
int fold_operations();
private:
Vector<ConstantOperation *> try_fold_operations(Span<NodeOperation *> operations);
ConstantOperation *fold_operation(NodeOperation *operation);
MemoryBuffer *create_constant_buffer(DataType data_type);
Vector<MemoryBuffer *> get_constant_input_buffers(NodeOperation *operation);
void delete_constant_buffers();
void get_operation_output_operations(NodeOperation *operation,
Vector<NodeOperation *> &r_outputs);
};
} // namespace blender::compositor
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