Function encode_vertex_buffer 

pub fn encode_vertex_buffer<Vertex>(
    buffer: &mut [u8],
    vertices: &[Vertex],
    version: VertexEncodingVersion,
) -> Option<usize>

Encodes vertex data into an array of bytes that is generally smaller and compresses better compared to original.

Returns encoded data size on success, None on error; the only error condition is if buffer doesn’t have enough space.

This function works for a single vertex stream; for multiple vertex streams, call encode_vertex_buffer for each stream.

Note that all bytes of each vertex are encoded verbatim, including padding which should be zero-initialized.

Arguments

• buffer: must contain enough space for the encoded vertex buffer (use encode_vertex_buffer_bound to compute worst case size)