add()

SliceSet::SliceId MayaFlux::Buffers::SliceSet::add	(	std::span< const uint8_t >	bytes,
		std::optional< Portal::Graphics::PrimitiveTopology >	topology = std::nullopt
	)

Append a block at the end of memory and draw order.

Parameters

bytes	Whole vertices.
topology	Topology of this block; the set's default when omitted.

Returns

Id of the block, or 0 if bytes is not a whole number of vertices.

Definition at line 22 of file SliceSet.cpp.

{
    if (bytes.size() % m_stride != 0) {
        MF_ERROR(Journal::Component::Buffers, Journal::Context::BufferManagement,
            "SliceSet::add: {} bytes is not a whole number of {} byte vertices",
            bytes.size(), m_stride);
        return 0;
    }
 
    const SliceId id = m_next_id++;
    const size_t offset = m_mirror.size();
 
    m_mirror.insert(m_mirror.end(), bytes.begin(), bytes.end());
    m_slices.emplace(id, Slice { .byte_offset = offset, .byte_size = bytes.size(), .topology = topology.value_or(m_topology) });
    m_memory_order.push_back(id);
    m_draw_order.push_back(id);
 
    mark_dirty(offset, m_mirror.size());
    m_runs_changed = true;
    return id;
}

References MayaFlux::Journal::BufferManagement, MayaFlux::Journal::Buffers, MayaFlux::Buffers::SliceSet::Slice::byte_offset, m_draw_order, m_memory_order, m_mirror, m_next_id, m_runs_changed, m_slices, m_stride, m_topology, mark_dirty(), MF_ERROR, offset, and topology.

Referenced by MayaFlux::Buffers::FormaProcessor::add_slice(), and MayaFlux::Buffers::FormaProcessor::set_bytes().

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