Putting it in the pipeline is a bit of a lie. We no longer need it for
nir_lower_wpos_center. The only other user is pipeline_has_coarse_pixel
and that is used to build the shader key which we construct before we've
processed any NIR so we don't have accurate information at that time
anyway. Instead, look at ms_info->sampleShadingEnable directly in
pipeline_has_coarse_pixel and trust the back-end to deal with disabling
coarse when we need per-sample dispatch.
Reviewed-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/14198>
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