From 062a35b5540e1c03ef44c407ec6aa3c095736965 Mon Sep 17 00:00:00 2001
From: Emma Anholt <emma@anholt.net>
Date: Mon, 28 Jul 2025 17:01:54 -0700
Subject: [PATCH] nir/lower_sample_shading: Set the sample qualifier on in
 vars.

This is another step in setting things up, that zink would like to have.

Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/36496>
---
 src/compiler/nir/nir_lower_sample_shading.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/compiler/nir/nir_lower_sample_shading.c b/src/compiler/nir/nir_lower_sample_shading.c
index 7983a664b15..88251086810 100644
--- a/src/compiler/nir/nir_lower_sample_shading.c
+++ b/src/compiler/nir/nir_lower_sample_shading.c
@@ -44,6 +44,11 @@ nir_lower_sample_shading(nir_shader *nir)
    assert(nir->info.stage == MESA_SHADER_FRAGMENT);
    assert(nir->info.fs.uses_sample_shading);
 
+   nir_foreach_shader_in_variable(var, nir) {
+      nir->info.fs.uses_sample_qualifier = true;
+      var->data.sample = true;
+   }
+
    return nir_shader_intrinsics_pass(nir, force_persample_shading,
                                      nir_metadata_all, NULL);
 }