get_value_impl()

void MayaFlux::Kakshya::TextureContainer::get_value_impl ( const std::vector< uint64_t > &  coords, void *  out, const std::type_info &  type  ) const

overrideprotectedvirtual

Type-erased single-element read.

Implementations copy the native element at coords into out if type matches their native type, otherwise no-op. out points to a caller-owned buffer of exactly sizeof(native type) bytes.

Implements MayaFlux::Kakshya::NDDataContainer< DataVariant >.

Definition at line 1089 of file TextureContainer.cpp.

{
    if (coords.empty() || m_data.empty())
        return;
 
    const size_t layer = (m_data.size() > 1) ? static_cast<size_t>(coords[0]) : 0;
    if (layer >= m_data.size() || coords.size() < (m_data.size() > 1 ? 4U : 3U))
        return;
 
    ensure_cpu(static_cast<uint32_t>(layer));
 
    const size_t co = (m_data.size() > 1) ? 1 : 0;
    const size_t idx = (coords[co] * m_width + coords[co + 1]) * m_channels + coords[co + 2];
 
    seqlock_read_void(m_slot_locks[layer], 8, [&] {
        std::visit([&](const auto& vec) {
            using T = typename std::decay_t<decltype(vec)>::value_type;
            if (type != typeid(T) || idx >= vec.size())
                return;
            *static_cast<T*>(out) = vec[idx];
        },
            m_data[layer]);
    });
}

References coords, ensure_cpu(), m_channels, m_data, m_slot_locks, m_width, out, and type.

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