7819b103fa
IDVS2 uses a new special FAU value shader_output to determine what the vertex shader is supposed to store as output. Signed-off-by: Mary Guillemard <mary.guillemard@collabora.com> Reviewed-by: Benjamin Lee <benjamin.lee@collabora.com> Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/33910>