void SPPMPassCallback::pre_render(
const Frame& frame,
JobQueue& job_queue,
AbortSwitch& abort_switch)
{
RENDERER_LOG_INFO(
"sppm lookup radius is %f (%s of initial radius).",
m_lookup_radius,
pretty_percent(m_lookup_radius, m_initial_lookup_radius, 3).c_str());
m_stopwatch.start();
// Create a new set of photons.
m_photons.clear_keep_memory();
m_emitted_photon_count =
m_photon_tracer.trace_photons(
m_photons,
hash_uint32(m_pass_number),
job_queue,
abort_switch);
// Stop there if rendering was aborted.
if (abort_switch.is_aborted())
return;
// Build a new photon map.
m_photon_map.reset(new SPPMPhotonMap(m_photons));
}
void SampleGeneratorBase::generate_samples(
const size_t sample_count,
SampleAccumulationBuffer& buffer,
AbortSwitch& abort_switch)
{
assert(sample_count > 0);
clear_keep_memory(m_samples);
m_samples.reserve(sample_count);
size_t stored_sample_count = 0;
while (stored_sample_count < sample_count)
{
stored_sample_count += generate_samples(m_sequence_index, m_samples);
++m_sequence_index;
if (++m_current_batch_size == SampleBatchSize)
{
m_current_batch_size = 0;
m_sequence_index += m_stride;
if (abort_switch.is_aborted())
break;
}
}
if (stored_sample_count > 0)
buffer.store_samples(stored_sample_count, &m_samples[0]);
}
JobQueue::RunningJobInfo JobQueue::wait_for_scheduled_job(AbortSwitch& abort_switch)
{
boost::mutex::scoped_lock lock(impl->m_mutex);
// Wait for a scheduled job to be available.
while (!abort_switch.is_aborted() && impl->m_scheduled_jobs.empty()) // order matters
impl->m_event.wait(lock);
return acquire_scheduled_job_unlocked();
}
