image_vdb.h

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/* SPDX-FileCopyrightText: 2011-2022 Blender Foundation
 *
 * SPDX-License-Identifier: Apache-2.0 */
 
#pragma once
 
#ifdef WITH_OPENVDB
#  include <openvdb/openvdb.h>
#endif
#ifdef WITH_NANOVDB
#  include <nanovdb/NanoVDB.h>
#  if NANOVDB_MAJOR_VERSION_NUMBER > 32 || \
      (NANOVDB_MAJOR_VERSION_NUMBER == 32 && NANOVDB_MINOR_VERSION_NUMBER >= 7)
#    include <nanovdb/GridHandle.h>
#  else
#    include <nanovdb/util/GridHandle.h>
#  endif
#endif
 
#include "scene/image.h"
 
CCL_NAMESPACE_BEGIN
 
class VDBImageLoader : public ImageLoader {
 public:
#ifdef WITH_OPENVDB
  VDBImageLoader(openvdb::GridBase::ConstPtr grid_, const string &grid_name);
#endif
  VDBImageLoader(const string &grid_name);
  ~VDBImageLoader() override;
 
  bool load_metadata(const ImageDeviceFeatures &features, ImageMetaData &metadata) override;
 
  bool load_pixels(const ImageMetaData &metadata,
                   void *pixels,
                   const size_t pixels_size,
                   const bool associate_alpha) override;
 
  string name() const override;
 
  bool equals(const ImageLoader &other) const override;
 
  void cleanup() override;
 
  bool is_vdb_loader() const override;
 
#ifdef WITH_OPENVDB
  openvdb::GridBase::ConstPtr get_grid();
#endif
 
 protected:
  string grid_name;
#ifdef WITH_OPENVDB
  openvdb::GridBase::ConstPtr grid;
  openvdb::CoordBBox bbox;
#endif
#ifdef WITH_NANOVDB
  nanovdb::GridHandle<> nanogrid;
  int precision = 0;
#endif
};
 
CCL_NAMESPACE_END