void OpenCLIntersectionDevice::IntersectionThread(OpenCLIntersectionDevice *renderDevice) {
LR_LOG(renderDevice->deviceContext, "[OpenCL device::" << renderDevice->deviceName << "] Rendering thread started");
try {
RayBufferQueue *queue = renderDevice->externalRayBufferQueue ?
renderDevice->externalRayBufferQueue : &(renderDevice->rayBufferQueue);
RayBuffer *rayBuffer0, *rayBuffer1, *rayBuffer2;
const double startTime = WallClockTime();
while (!boost::this_thread::interruption_requested()) {
const double t1 = WallClockTime();
queue->Pop3xToDo(&rayBuffer0, &rayBuffer1, &rayBuffer2);
renderDevice->statsDeviceIdleTime += WallClockTime() - t1;
const unsigned int count = (rayBuffer0 ? 1 : 0) + (rayBuffer1 ? 1 : 0) + (rayBuffer2 ? 1 : 0);
switch(count) {
case 1: {
// Only one ray buffer to trace available
VECTOR_CLASS<cl::Event> readEvent0(1);
VECTOR_CLASS<cl::Event> traceEvent0(1);
cl::Event event0;
renderDevice->TraceRayBuffer(rayBuffer0,
readEvent0, traceEvent0,
&event0);
event0.wait();
queue->PushDone(rayBuffer0);
renderDevice->statsDeviceTotalTime = WallClockTime() - startTime;
break;
}
case 2: {
// At least 2 ray buffers to trace
// Trace 0 ray buffer
VECTOR_CLASS<cl::Event> readEvent0(1);
VECTOR_CLASS<cl::Event> traceEvent0(1);
cl::Event event0;
renderDevice->TraceRayBuffer(rayBuffer0,
readEvent0, traceEvent0,
&event0);
// Trace 1 ray buffer
VECTOR_CLASS<cl::Event> readEvent1(1);
VECTOR_CLASS<cl::Event> traceEvent1(1);
cl::Event event1;
renderDevice->TraceRayBuffer(rayBuffer1,
readEvent1, traceEvent1,
&event1);
// Pop 0 ray buffer
event0.wait();
queue->PushDone(rayBuffer0);
// Pop 1 ray buffer
event1.wait();
queue->PushDone(rayBuffer1);
renderDevice->statsDeviceTotalTime = WallClockTime() - startTime;
break;
}
case 3: {
// At least 3 ray buffers to trace
// Trace 0 ray buffer
VECTOR_CLASS<cl::Event> readEvent0(1);
VECTOR_CLASS<cl::Event> traceEvent0(1);
cl::Event event0;
renderDevice->TraceRayBuffer(rayBuffer0,
readEvent0, traceEvent0,
&event0);
// Trace 1 ray buffer
VECTOR_CLASS<cl::Event> readEvent1(1);
VECTOR_CLASS<cl::Event> traceEvent1(1);
cl::Event event1;
renderDevice->TraceRayBuffer(rayBuffer1,
readEvent1, traceEvent1,
&event1);
// Trace 2 ray buffer
VECTOR_CLASS<cl::Event> readEvent2(1);
VECTOR_CLASS<cl::Event> traceEvent2(1);
cl::Event event2;
renderDevice->TraceRayBuffer(rayBuffer2,
readEvent2, traceEvent2,
&event2);
// Pop 0 ray buffer
event0.wait();
queue->PushDone(rayBuffer0);
// Pop 1 ray buffer
event1.wait();
queue->PushDone(rayBuffer1);
// Pop 2 ray buffer
event2.wait();
queue->PushDone(rayBuffer2);
renderDevice->statsDeviceTotalTime = WallClockTime() - startTime;
break;
}
default:
assert (false);
}
}
LR_LOG(renderDevice->deviceContext, "[OpenCL device::" << renderDevice->deviceName << "] Rendering thread halted");
} catch (boost::thread_interrupted) {
LR_LOG(renderDevice->deviceContext, "[OpenCL device::" << renderDevice->deviceName << "] Rendering thread halted");
} catch (cl::Error err) {
LR_LOG(renderDevice->deviceContext, "[OpenCL device::" << renderDevice->deviceName << "] Rendering thread ERROR: " << err.what() << "(" << luxrays::utils::oclErrorString(err.err()) << ")");
}
}
