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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 "BLI_map.hh"
#include "BLI_span.hh"
#include "BLI_vector.hh"
#include "COM_MemoryBuffer.h"
#ifdef WITH_CXX_GUARDEDALLOC
# include "MEM_guardedalloc.h"
#endif
#include <memory>
namespace blender::compositor {
/**
* Stores and shares operations rendered buffers including render data. Buffers are
* disposed once all dependent operations have finished reading them.
*/
class SharedOperationBuffers {
private:
typedef struct BufferData {
public:
BufferData();
std::unique_ptr<MemoryBuffer> buffer;
blender::Vector<rcti> render_areas;
int registered_reads;
int received_reads;
bool is_rendered;
} BufferData;
blender::Map<NodeOperation *, BufferData> buffers_;
public:
bool is_area_registered(NodeOperation *op, const rcti &area_to_render);
void register_area(NodeOperation *op, const rcti &area_to_render);
bool has_registered_reads(NodeOperation *op);
void register_read(NodeOperation *read_op);
blender::Span<rcti> get_areas_to_render(NodeOperation *op);
bool is_operation_rendered(NodeOperation *op);
void set_rendered_buffer(NodeOperation *op, std::unique_ptr<MemoryBuffer> buffer);
MemoryBuffer *get_rendered_buffer(NodeOperation *op);
void read_finished(NodeOperation *read_op);
private:
BufferData &get_buffer_data(NodeOperation *op);
#ifdef WITH_CXX_GUARDEDALLOC
MEM_CXX_CLASS_ALLOC_FUNCS("COM:SharedOperationBuffers")
#endif
};
} // namespace blender::compositor
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