write_back_buffer()

void MayaFlux::Buffers::DataWriteProcessor::write_back_buffer	(	size_t	index,
		Kakshya::DataVariant	data
	)

Write a raw back_buffers slot of the attached buffer.

Parameters

index	Slot index into its back_buffers.
data	Source data; a slot does not carry its size, so the data must not exceed what the buffer's owner allocated for it.

Definition at line 109 of file DataWriteProcessor.cpp.

{
    auto payload = std::make_shared<Kakshya::DataVariant>(std::move(data));
    enqueue_write([index, payload](DataWriteProcessor& self, const std::shared_ptr<VKBuffer>& vk) {
        const auto bytes = Kakshya::convert_variant<uint8_t>(*payload);
        const auto& slots = vk->get_buffer_resources().back_buffers;
        if (index >= slots.size() || bytes.size_bytes() == 0) {
            MF_RT_ERROR(Journal::Component::Buffers, Journal::Context::BufferProcessing,
                "DataWriteProcessor write_back_buffer needs an existing slot and nonempty data");
            return;
        }
        if (!slots[index].mapped_ptr) {
            ensure_staging(self.m_write_staging, bytes.size_bytes());
        }
        upload_back_buffer(slots[index], bytes.data(), bytes.size_bytes(), self.m_write_staging);
    });
}

References MayaFlux::Journal::BufferProcessing, MayaFlux::Journal::Buffers, enqueue_write(), index, m_write_staging, MF_RT_ERROR, payload, and MayaFlux::Buffers::upload_back_buffer().

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