enable_layer_data()

void MayaFlux::Buffers::TextureArrayBuffer::enable_layer_data

(

)

Create the per-layer buffer the shader reads as layerData.

Call it before the first frame, and only for a shader that declares the buffer. Calling it again does nothing.

Definition at line 181 of file TextureArrayBuffer.cpp.

{
    if (m_layer_data) {
        return;
    }
 
    const auto service = Registry::BackendRegistry::instance()
                             .get_service<Registry::Service::BufferService>();
    if (!service) {
        MF_ERROR(Journal::Component::Buffers, Journal::Context::BufferProcessing,
            "TextureArrayBuffer: layer data needs a buffer service");
        return;
    }
 
    m_layer_values.assign(static_cast<size_t>(m_layers) * 2, glm::vec4(0.0F));
    m_layer_data = std::make_shared<VKBuffer>(
        m_layer_values.size() * sizeof(glm::vec4),
        VKBuffer::Usage::HOST_STORAGE,
        Kakshya::DataModality::UNKNOWN);
    service->initialize_buffer(m_layer_data);
 
    std::memcpy(m_layer_data->get_mapped_ptr(), m_layer_values.data(),
        m_layer_values.size() * sizeof(glm::vec4));
    bind_layer_data();
}

References bind_layer_data(), MayaFlux::Journal::BufferProcessing, MayaFlux::Journal::Buffers, MayaFlux::Registry::BackendRegistry::get_service(), MayaFlux::Registry::BackendRegistry::instance(), m_layer_data, m_layer_values, m_layers, MF_ERROR, and MayaFlux::Kakshya::UNKNOWN.

Referenced by write_layer_value().

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