get_vertex()

std::span< const uint8_t > MayaFlux::Nodes::GpuSync::GeometryWriterNode::get_vertex

(

uint32_t

vertex_index

)

const

Get a single vertex by index.

Parameters

vertex_index

Index of vertex

Returns

Span covering this vertex's data

Definition at line 135 of file GeometryWriterNode.cpp.

{
    if (m_vertex_stride == 0 || m_vertex_count == 0) {
        return {};
    }
 
    if (vertex_index >= m_vertex_count) {
        MF_WARN(Journal::Component::Nodes, Journal::Context::NodeProcessing,
            "Vertex index {} out of range (count: {})",
            vertex_index, m_vertex_count);
        return {};
    }
 
    size_t offset_floats = (static_cast<size_t>(vertex_index) * m_vertex_stride) / sizeof(float);
    size_t stride_floats = m_vertex_stride / sizeof(float);
 
    if (offset_floats + stride_floats > m_vertex_buffer.size()) {
        return {};
    }
 
    return { m_vertex_buffer.data() + offset_floats, stride_floats };
}

References m_vertex_buffer, m_vertex_count, m_vertex_stride, MF_WARN, MayaFlux::Journal::NodeProcessing, and MayaFlux::Journal::Nodes.