Method _InitRepr

Hydrogent/src/HnMesh.cpp:255–281

}

void HnMesh::_InitRepr(const pxr::TfToken& ReprToken, pxr::HdDirtyBits* DirtyBits)
{
    auto it = std::find_if(_reprs.begin(), _reprs.end(), _ReprComparator(ReprToken));
    if (it != _reprs.end())
        return;

    _reprs.emplace_back(ReprToken, std::make_shared<pxr::HdRepr>());
    auto& Repr = *_reprs.back().second;

    // set dirty bit to say we need to sync a new repr
    *DirtyBits |= pxr::HdChangeTracker::NewRepr;

    _MeshReprConfig::DescArray ReprDescs = _GetReprDesc(ReprToken);
    // All main draw items must be added before any geometry subset draw item.
    for (const pxr::HdMeshReprDesc& Desc : ReprDescs)
    {
        if (Desc.geomStyle == pxr::HdMeshGeomStyleInvalid)
            continue;
        Repr.AddDrawItem(std::make_unique<HnDrawItem>(_sharedData, *this));
    }

    // Note that geometry susbset items may change later.
    for (const pxr::HdMeshReprDesc& Desc : ReprDescs)
    {
        AddGeometrySubsetDrawItems(Desc, Repr);
    }
}

void HnMesh::Invalidate()
{