usd_scene_delegate.hh

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/* SPDX-FileCopyrightText: 2023 Blender Authors
 *
 * SPDX-License-Identifier: GPL-2.0-or-later */
 
#pragma once
 
#include <string>
 
#include <pxr/imaging/hd/renderIndex.h>
#include <pxr/usdImaging/usdImaging/delegate.h>
 
struct Depsgraph;
 
namespace blender::io::hydra {
 
/* Populate Hydra render index using USD file export, for testing. */
class USDSceneDelegate {
 private:
  pxr::HdRenderIndex *render_index_;
  pxr::SdfPath const delegate_id_;
  pxr::UsdStageRefPtr stage_;
  std::unique_ptr<pxr::UsdImagingDelegate> delegate_;
 
  std::string temp_dir_;
  std::string temp_file_;
 
  bool use_materialx = true;
 
 public:
  USDSceneDelegate(pxr::HdRenderIndex *render_index,
                   pxr::SdfPath const &delegate_id,
                   bool use_materialx);
  ~USDSceneDelegate();
 
  void populate(Depsgraph *depsgraph);
};
 
}  // namespace blender::io::hydra