calculate_buffer_size()

size_t MayaFlux::Buffers::GeometryBuffer::calculate_buffer_size ( const std::shared_ptr< Nodes::GpuSync::GeometryWriterNode > &  node, float  over_allocate_factor  )

staticprivate

Calculate initial buffer size with optional over-allocation.

Definition at line 161 of file GeometryBuffer.cpp.

{
    if (!node) {
        return 0;
    }
 
    size_t base_size = node->get_vertex_buffer_size_bytes();
 
    if (base_size == 0) {
        MF_WARN(Journal::Component::Buffers, Journal::Context::BufferManagement,
            "GeometryWriterNode has zero-size vertex buffer. "
            "Did you forget to call set_vertex_stride() or resize_vertex_buffer()?");
        return 4096;
    }
 
    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 geometry buffer: {} → {} bytes ({}x)",
            base_size, allocated_size, over_allocate_factor);
    }
 
    return allocated_size;
}

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