Commit 9c1667f6 authored by Berk Geveci's avatar Berk Geveci Committed by Utkarsh Ayachit

Do not override DATA_NUMBER_OF_GHOST_LEVELS() unnecesarily.

If an algorithm produces more ghost levels than asked for, it
should be able to set DATA_NUMBER_OF_GHOST_LEVELS() and let the
pipeline know. This was not possible because the executive was
overwriting the value.
parent 0027efa6
......@@ -1060,7 +1060,22 @@ vtkStreamingDemandDrivenPipeline
dataInfo->Set(vtkDataObject::DATA_PIECE_NUMBER(), piece);
dataInfo->Set(vtkDataObject::DATA_NUMBER_OF_PIECES(), numPieces);
dataInfo->Set(vtkDataObject::DATA_NUMBER_OF_GHOST_LEVELS(), ghostLevel);
// If the source or filter produced a different number of ghost
// levels, honor it.
int dataGhostLevel = 0;
if (dataInfo->Has(vtkDataObject::DATA_NUMBER_OF_GHOST_LEVELS()))
dataGhostLevel =
// If the ghost level generated by the algorithm is larger than
// requested, we keep it. Otherwise, we store the requested one.
// We do this because there is no point in the algorithm re-executing
// if the downstream asks for the same level even though the
// algorithm cannot produce it.
ghostLevel > dataGhostLevel ? ghostLevel : dataGhostLevel);
// In this block, we make sure that DATA_TIME_STEP() is set if:
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