swap_field()

void MayaFlux::Buffers::VolumeGridBuffer::swap_field

(

const std::string &

name

)

Exchange read and write slots for the named field.

Parameters

name	Field name. No effect on single-slot fields.

Called by whichever stage last wrote the field, after its dispatch, so the next stage reading it observes the new values. A stage that writes a field it also reads must swap; a stage writing a scratch field consumed immediately after need not.

Definition at line 443 of file VolumeGridBuffer.cpp.

{
    auto it = m_fields.find(name);
    if (it == m_fields.end()) {
        MF_ERROR(Journal::Component::Buffers, Journal::Context::BufferManagement,
            "VolumeGridBuffer::swap_field: no field named '{}'", name);
        return;
    }
 
    if (it->second.slot_a == it->second.slot_b) {
        return;
    }
 
    it->second.read_is_a = !it->second.read_is_a;
}

References MayaFlux::Journal::BufferManagement, MayaFlux::Journal::Buffers, m_fields, and MF_ERROR.