nir/tgsi: translate the interp location

translate sample and centroid locations.

Reviewed-by: Roland Scheidegger <sroland@vmware.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/4122>

src/gallium/auxiliary/nir/nir_to_tgsi_info.c

@@ -530,6 +530,11 @@ void nir_tgsi_scan_shader(const struct nir_shader *nir,
          enum glsl_base_type base_type =
             glsl_get_base_type(glsl_without_array(variable->type));
 
+         if (variable->data.centroid)
+            info->input_interpolate_loc[i] = TGSI_INTERPOLATE_LOC_CENTROID;
+         if (variable->data.sample)
+            info->input_interpolate_loc[i] = TGSI_INTERPOLATE_LOC_SAMPLE;
+
          switch (variable->data.interpolation) {
          case INTERP_MODE_NONE:
             if (glsl_base_type_is_integer(base_type)) {