aa021d50c0
These should be lowered away in GLSL IR but if we don't get dead code to clean them up it causes issues in glsl_to_nir. We wan't to drop as many GLSL IR opts in future as we can so this makes glsl_to_nir just ignore the vars if it sees them. In future we will want to just use the nir lowering pass that Vulkan currently uses. Acked-by: Elie Tournier <elie.tournier@collabora.com> Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>