ecutable program, or if no path through the
    shader consumes more than one attribute of a set of attributes
    aliased to the same location. The compiler and linker are
    allowed to assume that no aliasing is done and are free to
    employ optimizations that work only in the absence of aliasing.
    OpenGL implementations are not required to do error checking to
    detect aliasing.</p><p>Active attributes that are not explicitly bound will be
    bound by the linker when
    <a class="citerefentry" 