Function postIntersect

tutorials/pathtracer/pathtracer_device.cpp:1358–1386

typedef ISPCInstance* ISPCInstancePtr;

inline int postIntersect(const TutorialData& data, const Ray& ray, DifferentialGeometry& dg)
{
  dg.eps = 32.0f*1.19209e-07f*max(max(abs(dg.P.x),abs(dg.P.y)),max(abs(dg.P.z),ray.tfar));
   
  AffineSpace3fa local2world = AffineSpace3fa::scale(Vec3fa(1));
  ISPCGeometry** geometries = data.ispc_scene->geometries;
  
  for (int i=0; i<RTC_MAX_INSTANCE_LEVEL_COUNT; i++)
  {
    const unsigned int instID = dg.instIDs[i];
    if (instID == -1) break;

    ISPCInstance* instance = (ISPCInstancePtr) geometries[instID];
    local2world = local2world * calculate_interpolated_space(instance,ray.time());

    assert(instance->child->type == GROUP);
    geometries = ((ISPCGroup*)instance->child)->geometries;
  }

  int materialID = 0;
  ISPCGeometry* geom = geometries[dg.geomID];
  auto g = geom; {
    postIntersectGeometry(data,ray,dg,g,materialID);
  }
  dg.Ng = xfmVector(local2world,dg.Ng);
  dg.Ns = xfmVector(local2world,dg.Ns);
  
  return materialID;
}

RTC_SYCL_INDIRECTLY_CALLABLE void occlusionFilterOpaque(const RTCFilterFunctionNArguments* args)
{