nir: Return progress from nir_lower_clip_fs().

Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>

diff --git a/src/compiler/nir/nir.h b/src/compiler/nir/nir.h
index 8cd9d85..8c74af0 100644 (file)
--- a/src/compiler/nir/nir.h
+++ b/src/compiler/nir/nir.h
@@ -2498,7 +2498,7 @@ bool nir_lower_tex(nir_shader *shader,
 bool nir_lower_idiv(nir_shader *shader);
 
 bool nir_lower_clip_vs(nir_shader *shader, unsigned ucp_enables);
-void nir_lower_clip_fs(nir_shader *shader, unsigned ucp_enables);
+bool nir_lower_clip_fs(nir_shader *shader, unsigned ucp_enables);
 bool nir_lower_clip_cull_distance_arrays(nir_shader *nir);
 
 void nir_lower_two_sided_color(nir_shader *shader);

diff --git a/src/compiler/nir/nir_lower_clip.c b/src/compiler/nir/nir_lower_clip.c
index 227dcbb..7bed46b 100644 (file)
--- a/src/compiler/nir/nir_lower_clip.c
+++ b/src/compiler/nir/nir_lower_clip.c
@@ -292,18 +292,20 @@ lower_clip_fs(nir_function_impl *impl, unsigned ucp_enables,
          b.shader->info->fs.uses_discard = true;
       }
    }
+
+   nir_metadata_preserve(impl, nir_metadata_dominance);
 }
 
 /* insert conditional kill based on interpolated CLIPDIST
  */
-void
+bool
 nir_lower_clip_fs(nir_shader *shader, unsigned ucp_enables)
 {
    nir_variable *in[2];
    int maxloc = -1;
 
    if (!ucp_enables)
-      return;
+      return false;
 
    nir_foreach_variable(var, &shader->inputs) {
       int loc = var->data.driver_location;
@@ -332,4 +334,6 @@ nir_lower_clip_fs(nir_shader *shader, unsigned ucp_enables)
       if (!strcmp(function->name, "main"))
          lower_clip_fs(function->impl, ucp_enables, in);
    }
+
+   return true;
 }