Function device_render

tutorials/pathtracer/pathtracer_device.cpp:1794–1843

/* called by the C++ code to render */
extern "C" void device_render (int* pixels,
                           const unsigned int width,
                           const unsigned int height,
                           const float time,
                           const ISPCCamera& camera)
{
  /* create scene */
  if (data.scene == nullptr) {
    data.scene = convertScene(data.ispc_scene);
    if (g_subdiv_mode) updateEdgeLevels(data.ispc_scene,camera.xfm.p);
    rtcCommitScene (data.scene);
    data.traversable = rtcGetSceneTraversable(data.scene);
  }

  /* create accumulator */
  if (data.accu_width != width || data.accu_height != height) {
    alignedUSMFree(data.accu);
    data.accu = (Vec3ff*) alignedUSMMalloc((width*height)*sizeof(Vec3ff),16,EmbreeUSMMode::DEVICE_READ_WRITE);
    data.accu_width = width;
    data.accu_height = height;
    for (unsigned int i=0; i<width*height; i++)
      data.accu[i] = Vec3ff(0.0f);
  }

  /* reset accumulator */
  bool camera_changed = g_changed || !g_accumulate || g_animation_mode; g_changed = false;
  camera_changed |= ne(g_accu_vx,camera.xfm.l.vx); g_accu_vx = camera.xfm.l.vx;
  camera_changed |= ne(g_accu_vy,camera.xfm.l.vy); g_accu_vy = camera.xfm.l.vy;
  camera_changed |= ne(g_accu_vz,camera.xfm.l.vz); g_accu_vz = camera.xfm.l.vz;
  camera_changed |= ne(g_accu_p, camera.xfm.p);    g_accu_p  = camera.xfm.p;

  if (camera_changed)
  {
    data.accu_count=0;
    for (unsigned int i=0; i<width*height; i++)
      data.accu[i] = Vec3ff(0.0f);

    if (g_subdiv_mode) {
      updateEdgeLevels(data.ispc_scene,camera.xfm.p);
      rtcCommitScene (data.scene);
      data.traversable = rtcGetSceneTraversable(data.scene);
    }
  }
  else
    data.accu_count++;

  if (g_animation_mode)
      UpdateScene(g_ispc_scene, time);

} // device_render

/* called by the C++ code for cleanup */
extern "C" void device_cleanup ()