RenderResultPacket RenderServerRenderer::createRenderResultPacket(const RenderServerRenderRequest & request)
{
QByteArray outputBuffer;
int bufferSizeBytes = m_renderer.getScreenBufferSizeBytes();
outputBuffer.resize(bufferSizeBytes);
m_renderer.getOutputBuffer(outputBuffer.data());
RenderResultPacket result = RenderResultPacket(request.getSequenceNumber(), request.getIterationNumbers(), outputBuffer);
return result;
}
void RenderServerRenderer::onNewRenderCommandInQueue()
{
while(true)
{
// Process queued up events/slots, in case we quit
QCoreApplication::processEvents();
if(m_quit)
{
return;
}
// If queue is empty, we wait until we get a new request
if(m_queue.size() == 0)
{
m_waitCondition.wait(&m_waitConditionMutex);
continue;
}
// Process the next RenderServerRenderRequest
RenderServerRenderRequest renderRequest = m_queue.dequeue();
QString iterationNumbersInPacketString = "";
for(int i = 0; i < renderRequest.getNumIterations(); i++)
{
// If the packet we are working has become old during this rendering for-loop, then break out of this loop
if(m_currentSequenceNumber != renderRequest.getSequenceNumber())
{
break;
}
// Else we'll render this frame
else
{
// This renderRequest has a new scene name, so we'll load the new scene
if(m_scene == NULL || m_scene->getSceneName() != renderRequest.getDetails().getSceneName())
{
loadNewScene(renderRequest.getDetails().getSceneName());
}
// Render the frame with local iteration number going from 0 to renderRequestsCurrentPacket.size()
// We only need to create the output buffer for the last iteration of the packet
bool createOutputBuffer = i == renderRequest.getNumIterations() - 1;
renderFrame(renderRequest.getIterationNumbers().at(i), i, renderRequest.getPPMRadii().at(i), createOutputBuffer, renderRequest.getDetails());
iterationNumbersInPacketString += " " + QString::number(renderRequest.getIterationNumbers().at(i));
}
}
// If the packet we have just rendered is old (m_currentSequenceNumber is newer)
// then we drop this packet. This can happen if we have started on a RenderServerRenderRequest but later found out about
// a new sequence, in which case we have break-ed out of the loop above.
if(renderRequest.getSequenceNumber() == m_currentSequenceNumber)
{
RenderResultPacket result = createRenderResultPacket(renderRequest);
QString logString = QString("TRANSFERRING packet (%1 iteration:%2) in sequence %3 to client.")
.arg(result.getNumIterationsInPacket())
.arg(iterationNumbersInPacketString)
.arg(result.getSequenceNumber());
emit newLogString(logString);
emit newRenderResultPacket(result);
}
else
{
QString logString = QString("IGNORED package with %1 iterations since sequence %3 != %4.")
.arg(renderRequest.getNumIterations())
.arg(renderRequest.getSequenceNumber())
.arg(m_currentSequenceNumber);
emit newLogString(logString);
}
}
}