/// <summary>
/// Query all the PDG graph context in the current Houdini Engine session.
/// Handle PDG events, work item status updates.
/// Forward relevant events to HEU_PDGAssetLink objects.
/// </summary>
private void UpdatePDGContext()
{
#if HOUDINIENGINEUNITY_ENABLED
HEU_SessionBase session = GetHAPIPDGSession();
if (session == null || !session.IsSessionValid())
{
return;
}
// Get current PDG graph contexts
ReinitializePDGContext();
// Process next set of events for each graph context
if (_pdgContextIDs != null)
{
foreach (HAPI_PDG_GraphContextId contextID in _pdgContextIDs)
{
int pdgStateInt;
if (!session.GetPDGState(contextID, out pdgStateInt))
{
SetErrorState("Failed to get PDG state", true);
continue;
}
_pdgState = (HAPI_PDG_State)pdgStateInt;
// Only initialize event array if not valid, or user resized max size
if (_pdgQueryEvents == null || _pdgQueryEvents.Length != _pdgMaxProcessEvents)
{
_pdgQueryEvents = new HAPI_PDG_EventInfo[_pdgMaxProcessEvents];
}
for (int i = 0; i < _pdgQueryEvents.Length; ++i)
{
ResetPDGEventInfo(ref _pdgQueryEvents[i]);
}
int eventCount = 0;
int remainingCount = 0;
if (!session.GetPDGEvents(contextID, _pdgQueryEvents, _pdgMaxProcessEvents, out eventCount, out remainingCount))
{
SetErrorState("Failed to get PDG events", true);
continue;
}
for (int i = 0; i < eventCount; ++i)
{
ProcessPDGEvent(session, contextID, ref _pdgQueryEvents[i]);
}
}
}
#endif
}
private void UpdatePDGContext()
{
HEU_SessionBase session = GetHAPIPDGSession();
if (session == null || !session.IsSessionValid())
{
return;
}
ReinitializePDGContext();
// Get next set of events for each graph context
if (_pdgContextIDs != null)
{
foreach (HAPI_PDG_GraphContextId contextID in _pdgContextIDs)
{
int pdgStateInt;
if (!session.GetPDGState(contextID, out pdgStateInt))
{
SetErrorState("Failed to get PDG state", true);
continue;
}
_pdgState = (HAPI_PDG_State)pdgStateInt;
if (_pdgQueryEvents == null || _pdgQueryEvents.Length != _pdgMaxProcessEvents)
{
_pdgQueryEvents = new HAPI_PDG_EventInfo[_pdgMaxProcessEvents];
}
for (int i = 0; i < _pdgQueryEvents.Length; ++i)
{
ResetPDGEventInfo(ref _pdgQueryEvents[i]);
}
int eventCount = 0;
int remainingCount = 0;
if (!session.GetPDGEvents(contextID, _pdgQueryEvents, _pdgMaxProcessEvents, out eventCount, out remainingCount))
{
SetErrorState("Failed to get PDG events", true);
continue;
}
for (int i = 0; i < eventCount; ++i)
{
ProcessPDGEvent(session, contextID, ref _pdgQueryEvents[i]);
}
}
}
}