r600/sfn: use only as many components as needed for tex backend coord

Signed-off-by: Gert Wollny <gert.wollny@collabora.com> Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/20141>
2022-11-30 18:54:00 +01:00
parent bcd9da1b38
commit 1975d5eaf4
1 changed files with 5 additions and 3 deletions
@@ -1162,14 +1162,16 @@ LowerTexToBackend::finalize(nir_tex_instr *tex,
 nir_ssa_def *
 LowerTexToBackend::prep_src(std::array<nir_ssa_def *, 4>& coord, int& used_coord_mask)
 {
+   int max_coord = 0;
   for (int i = 0; i < 4; ++i) {
-      if (coord[i])
+      if (coord[i]) {
         used_coord_mask |= 1 << i;
-      else
+         max_coord = i;
+      } else
         coord[i] = get_undef();
   }

-   return nir_vec(b, coord.data(), 4);
+   return nir_vec(b, coord.data(), max_coord + 1);
 }

 nir_ssa_def *