Somehow we ended up with an extra scalar source up-front. It doesn't
look like any drivers use this opcode yet so no real harm has been done
by it being wrong.
Acked-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com> Reviewed-by: Rob Clark <robdclark@chromium.org>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/5218>