write_descriptors()

void MayaFlux::Portal::Graphics::PrimitiveMill::write_descriptors ( const std::shared_ptr< Buffers::VKBuffer > &  source )

private

Points the descriptor set at the current buffer set, on any change of source or ring slot.

Rewriting a shared set is safe here because resolve_pending() has already retired the only submission that reads it, and the draw takes the milled buffer as vertex input rather than through this set.

Definition at line 592 of file PrimitiveMill.cpp.

{
    if (m_descriptors_written && m_bound_source.lock() == source
        && m_bound_slot == m_output_slot) {
        return;
    }
 
    auto& foundry = get_shader_foundry();
    const auto set = m_sets.front();
 
    const auto bind = [&](uint32_t binding, const std::shared_ptr<VKBuffer>& buf) {
        foundry.update_descriptor_buffer(
            set, binding, vk::DescriptorType::eStorageBuffer,
            buf->get_buffer(), 0, buf->get_size_bytes());
    };
 
    bind(0, source);
    bind(1, m_run_buf);
    bind(2, m_prefix_buf);
    bind(3, m_outputs[m_output_slot]);
 
    m_bound_source = source;
    m_bound_slot = m_output_slot;
    m_descriptors_written = true;
}

References MayaFlux::Portal::Graphics::get_shader_foundry(), m_bound_slot, m_bound_source, m_descriptors_written, m_output_slot, m_outputs, m_prefix_buf, m_run_buf, and m_sets.

Referenced by mill().

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