The Vulkan spec requires ~0 for 1x1. Fixes dEQP-VK.fragment_shading_rate.misc.shading_rates. Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com> Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl> Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/12245>