processing_function()

void MayaFlux::Buffers::NetworkGeometryProcessor::processing_function ( const std::shared_ptr< Buffer > &  buffer )

overridevirtual

BufferProcessor interface - aggregates and uploads network geometry.

Parameters

buffer

The buffer this processor is attached to

For each bound network:

1. Extract vertices from all internal nodes
2. Aggregate into single vertex array
3. Upload to GPU vertex buffer

Implements MayaFlux::Buffers::BufferProcessor.

Definition at line 101 of file NetworkGeometryProcessor.cpp.

{
    if (m_bindings.empty()) {
        return;
    }
 
    auto vk_buffer = std::dynamic_pointer_cast<VKBuffer>(buffer);
    if (!vk_buffer) {
        MF_RT_ERROR(Journal::Component::Buffers, Journal::Context::BufferProcessing,
            "NetworkGeometryProcessor requires VKBuffer, got different buffer type");
        return;
    }
 
    for (auto& [name, binding] : m_bindings) {
        if (!binding.network || !binding.network->is_enabled()) {
            MF_RT_TRACE(Journal::Component::Buffers, Journal::Context::BufferProcessing,
                "Network '{}' disabled, skipping upload", name);
            continue;
        }
 
        auto gpu_data = extract_network_gpu_data(binding.network, name);
        if (gpu_data.vertex_data.empty()) {
            if (binding.gpu_vertex_buffer->is_host_visible())
                binding.gpu_vertex_buffer->clear();
            continue;
        }
 
        if (gpu_data.vertex_data.empty() || gpu_data.vertex_count == 0) {
            if (binding.gpu_vertex_buffer->is_host_visible()) {
                binding.gpu_vertex_buffer->clear();
            }
            MF_RT_TRACE(Journal::Component::Buffers, Journal::Context::BufferProcessing,
                "Network '{}' has no vertices, cleared buffer", name);
            continue;
        }
 
        size_t required_size = gpu_data.vertex_data.size();
        size_t available_size = binding.gpu_vertex_buffer->get_size_bytes();
 
        if (required_size > available_size) {
            auto new_size = static_cast<size_t>((float)required_size * 1.5F);
 
            MF_RT_TRACE(Journal::Component::Buffers, Journal::Context::BufferProcessing,
                "Network '{}' growing: resizing GPU buffer from {} → {} bytes",
                name, available_size, new_size);
 
            binding.gpu_vertex_buffer->resize(new_size, false);
 
            if (binding.staging_buffer) {
                binding.staging_buffer->resize(new_size, false);
                MF_RT_TRACE(Journal::Component::Buffers, Journal::Context::BufferProcessing,
                    "Resized staging buffer for '{}' to {} bytes", name, new_size);
            }
        }
 
        upload_to_gpu(
            gpu_data.vertex_data.data(),
            gpu_data.vertex_data.size(),
            binding.gpu_vertex_buffer,
            binding.staging_buffer);
 
        auto layout = gpu_data.layout;
 
        binding.gpu_vertex_buffer->set_vertex_layout(layout.value());
 
        MF_RT_TRACE(Journal::Component::Buffers, Journal::Context::BufferProcessing,
            "Uploaded {} vertices from network '{}' ({} bytes)",
            gpu_data.vertex_count, name, gpu_data.vertex_data.size());
    }
}

References MayaFlux::Journal::BufferProcessing, MayaFlux::Journal::Buffers, MayaFlux::Buffers::extract_network_gpu_data(), m_bindings, MF_RT_ERROR, MF_RT_TRACE, and MayaFlux::Buffers::upload_to_gpu().

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