Method renderFrame

modules/mpi/ospray/MPIDistributedDevice.cpp:419–483

}

OSPFuture MPIDistributedDevice::renderFrame(OSPFrameBuffer _fb,
    OSPRenderer _renderer,
    OSPCamera _camera,
    OSPWorld _world)
{
  RKCOMMON_IF_TRACING_ENABLED({
    rkcommon::tracing::beginEvent("renderFrame", "MPIDD");
    rkcommon::tracing::beginEvent("renderFrame-mpibarrier", "MPIDD");
  });

  mpicommon::barrier(mpicommon::worker.comm).wait();

  RKCOMMON_IF_TRACING_ENABLED({
    rkcommon::tracing::endEvent();
    rkcommon::tracing::beginEvent("renderFrame-lookupObjects", "MPIDD");
  });

  auto *fb = lookupDistributedObject<FrameBuffer>(_fb);
  auto *renderer = lookupDistributedObject<Renderer>(_renderer);
  auto *camera = lookupObject<Camera>(_camera);
  auto *world = lookupObject<DistributedWorld>(_world);

  RKCOMMON_IF_TRACING_ENABLED({
    rkcommon::tracing::endEvent();
    rkcommon::tracing::beginEvent("renderFrame-createDLB", "MPIDD");
  });

  auto loadBalancer =
      std::make_shared<DistributedLoadBalancer>(allocateHandle());

  RKCOMMON_IF_TRACING_ENABLED(rkcommon::tracing::endEvent());

  fb->setCompletedEvent(OSP_NONE_FINISHED);

  fb->refInc();
  renderer->refInc();
  camera->refInc();
  world->refInc();

  RKCOMMON_IF_TRACING_ENABLED(
      rkcommon::tracing::setMarker("renderFrame-spawnRenderThread", "MPIDD"));
  auto *f = new ThreadedRenderTask(fb, loadBalancer, [=]() {
    RKCOMMON_IF_TRACING_ENABLED({
      rkcommon::tracing::setThreadName("MPIDD::threadedRenderTask");
      rkcommon::tracing::beginEvent("renderFrameTask", "MPIDD");
    });

    utility::CodeTimer timer;
    timer.start();
    loadBalancer->renderFrame(fb, renderer, camera, world);
    timer.stop();

    RKCOMMON_IF_TRACING_ENABLED(rkcommon::tracing::endEvent());

    fb->refDec();
    renderer->refDec();
    camera->refDec();
    world->refDec();