calculate_buffer_size()

size_t MayaFlux::Buffers::NetworkGeometryBuffer::calculate_buffer_size ( const std::shared_ptr< Nodes::Network::NodeNetwork > &  network, float  over_allocate_factor  )

staticprivate

Calculate initial buffer size based on network node count.

Definition at line 85 of file NetworkGeometryBuffer.cpp.

{
    if (!network) {
        return 0;
    }
 
    size_t node_count = network->get_node_count();
 
    if (node_count == 0) {
        MF_WARN(Journal::Component::Buffers, Journal::Context::BufferManagement,
            "NodeNetwork has zero nodes. Buffer will be created with minimum size.");
        return 4096;
    }
 
    // Estimate: assume each node produces one PointVertex (position + color + size)
    size_t vertex_size = sizeof(Nodes::GpuSync::PointVertex);
    size_t base_size = node_count * vertex_size;
 
    auto allocated_size = static_cast<size_t>(
        static_cast<float>(base_size) * over_allocate_factor);
 
    if (over_allocate_factor > 1.0F) {
        MF_DEBUG(Journal::Component::Buffers, Journal::Context::BufferManagement,
            "Over-allocated network geometry buffer: {} nodes × {} bytes = {} → {} bytes ({}x)",
            node_count, vertex_size, base_size, allocated_size, over_allocate_factor);
    }
 
    return allocated_size;
}

References MayaFlux::Journal::BufferManagement, MayaFlux::Journal::Buffers, MF_DEBUG, and MF_WARN.