HdTopology::ID
HdBasisCurvesTopology::ComputeHash() const
{
    HD_TRACE_FUNCTION();

    HdTopology::ID hash = 0;
    hash = ArchHash64((const char*)&_curveBasis, sizeof(TfToken), hash);
    hash = ArchHash64((const char*)&_curveType, sizeof(TfToken), hash);
    hash = ArchHash64((const char*)&_curveWrap, sizeof(TfToken), hash);
    hash = ArchHash64((const char*)_curveVertexCounts.cdata(),
                      _curveVertexCounts.size() * sizeof(int), hash);
    hash = ArchHash64((const char*)_curveIndices.cdata(),
                      _curveIndices.size() * sizeof(int), hash);
    return hash;
}
Пример #2
0
HdTopology::ID
HdMeshTopology::ComputeHash() const
{
    HD_TRACE_FUNCTION();

    HdTopology::ID hash =_topology.ComputeHash();
    hash = ArchHash64((const char*)&_refineLevel, sizeof(_refineLevel), hash);
    return hash;
}
Пример #3
0
//
// De-duplicating and sharing of ExtComputation data.
//
// This is similar to sharing of primvar data. We identify
// data by computing a hash of the sources of the data. For
// now, buffer data allocated here is read-only and is never
// mutated. If that changes, then we will have to deal with
// migrating shared data to a non-shared buffer so that it
// can be modified safely.
// 
static uint64_t
_ComputeSharedComputationInputId(uint64_t baseId,
                                 HdBufferSourceVector const &sources)
{
    size_t inputId = baseId;
    for (HdBufferSourceSharedPtr const &bufferSource : sources) {
        size_t sourceId = bufferSource->ComputeHash();
        inputId = ArchHash64((const char*)&sourceId,
                               sizeof(sourceId), inputId);
    }
    return inputId;
}