COM_SharedOperationBuffers.h

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/* SPDX-FileCopyrightText: 2021 Blender Authors
 *
 * SPDX-License-Identifier: GPL-2.0-or-later */
 
#pragma once
 
#include "BLI_map.hh"
#include "BLI_vector.hh"
 
#include "DNA_vec_types.h"
 
#ifdef WITH_CXX_GUARDEDALLOC
#  include "MEM_guardedalloc.h"
#endif
 
namespace blender::compositor {
 
class MemoryBuffer;
class NodeOperation;
 
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);
 
  Vector<rcti> get_areas_to_render(NodeOperation *op, int offset_x, int offset_y);
  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