
This lets us vectorize gl_TessLevel{Inner,Outer} writes, using a pass developed for RADV. Not all backends are prepared to handle this, so we make it optional. Reviewed-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com> Reviewed-by: Caio Oliveira <caio.oliveira@intel.com> Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/17944>