clone_to() [2/2]

std::shared_ptr< Buffers::VKBuffer > MayaFlux::Buffers::VKBuffer::clone_to

(

Usage

usage

)

Create a clone of this buffer with the same data and properties.

Parameters

usage

Usage enum for the cloned buffer

Returns

Shared pointer to the cloned VKBuffer

The cloned buffer will have the same size, modality, dimensions, processing chain and default processor as the original. Changes to one buffer after cloning do not affect the other.

Definition at line 417 of file VKBuffer.cpp.

{
    auto buffer = std::make_shared<VKBuffer>(m_size_bytes, usage, m_modality);
 
    if (auto layout = get_vertex_layout(); layout.has_value()) {
        buffer->set_vertex_layout(layout.value());
    }
 
    buffer->set_processing_chain(get_processing_chain());
    buffer->set_default_processor(get_default_processor());
 
    if (is_host_visible()) {
        if (buffer->is_host_visible()) {
            auto src_ptr = static_cast<uint8_t*>(m_resources.mapped_ptr);
            buffer->set_data({ std::vector<uint8_t>(src_ptr, src_ptr + m_size_bytes) });
        } else {
            download_device_local(
                std::dynamic_pointer_cast<VKBuffer>(shared_from_this()),
                buffer,
                nullptr);
        }
    } else {
        if (buffer->is_host_visible()) {
            upload_device_local(
                buffer,
                std::dynamic_pointer_cast<VKBuffer>(shared_from_this()),
                get_data()[0]);
        } else {
            MF_WARN(Journal::Component::Buffers, Journal::Context::BufferManagement,
                "Cloning device-local VKBuffer to another device-local VKBuffer requires external data transfer");
        }
    }
 
    return buffer;
}

References MayaFlux::Journal::BufferManagement, MayaFlux::Journal::Buffers, MayaFlux::Buffers::download_device_local(), get_data(), get_default_processor(), get_processing_chain(), get_vertex_layout(), is_host_visible(), m_modality, m_resources, m_size_bytes, MayaFlux::Buffers::VKBufferResources::mapped_ptr, MF_WARN, and MayaFlux::Buffers::upload_device_local().

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