// Copyright 2009-2021 Intel Corporation
// SPDX-License-Identifier: Apache-2.0

#include "../common/tutorial/tutorial_device.isph"
#include "../common/math/linearspace.isph"
#include "../common/math/random_sampler.isph"
#include "../common/math/sampling.isph"
#include "../../include/embree4/rtcore.isph"
//#include "scene.isph"

struct InstanceLevels
{
  uniform unsigned int numLevels;
  uniform unsigned int* uniform numInstancesOnLevel;
  uniform LinearSpace3fa* uniform * uniform normalTransforms;
};

struct TutorialData
{
  RTCScene g_scene;
  uniform InstanceLevels g_instanceLevels;

  /* accumulation buffer */
  uniform Vec3ff* uniform g_accu;
  uniform unsigned int g_accu_width;
  uniform unsigned int g_accu_height;
  uniform unsigned int g_accu_count;
  uniform Vec3f g_accu_vx;
  uniform Vec3f g_accu_vy;
  uniform Vec3f g_accu_vz;
  uniform Vec3f g_accu_p;

  LinearSpace3fa** g_normalTransforms;
};

#if __SYCL_COMPILER_VERSION >= 20210801
}
namespace sycl {
  template<> struct is_device_copyable<embree::TutorialData> : std::true_type {};
  template<> struct is_device_copyable<const embree::TutorialData> : std::true_type {};
}
namespace embree {
#endif

extern "C" uniform RTCScene initializeScene(uniform TutorialData& data, uniform RTCDevice device);

extern "C" void cleanupScene(uniform TutorialData& data);

inline void TutorialData_Constructor(uniform TutorialData* uniform This)
{
  This->g_scene  = NULL;
  This->g_accu = NULL;
  This->g_accu_width = 0;
  This->g_accu_height = 0;
  This->g_accu_count = 0;
  This->g_accu_vx = make_Vec3f(0.0f);
  This->g_accu_vy = make_Vec3f(0.0f);
  This->g_accu_vz = make_Vec3f(0.0f);
  This->g_accu_p  = make_Vec3f(0.0f);
  This->g_normalTransforms = NULL;
  This->g_instanceLevels.numLevels = 0;
  This->g_instanceLevels.numInstancesOnLevel = NULL;
  This->g_instanceLevels.normalTransforms = NULL;
}

inline void TutorialData_Destructor(uniform TutorialData* uniform This)
{
  rtcReleaseScene (This->g_scene); This->g_scene = NULL;
  cleanupScene(*This);
  delete[] This->g_accu; This->g_accu = NULL;
  This->g_accu_width = 0;
  This->g_accu_height = 0;
  This->g_accu_count = 0;
}
