Function ugli::instanced

pub fn instanced<'a, V, I, VS, IS>(
    vertices: VS, 
    instances: IS
) -> InstancedVertexDataSource<'a, V, I> where
    V: Vertex + 'a,
    I: Vertex + 'a,
    VS: IntoVertexBufferSlice<'a, V>,
    IS: IntoVertexBufferSlice<'a, I>,