nir: patch up deref-vars when lowering clip-planes

Otherwise, we fail validation and potentially generate invalid code.
Let's fix up the mode of the accesses to the variable.

Signed-off-by: Erik Faye-Lund <erik.faye-lund@collabora.com>
Reviewed-by: Caio Marcelo de Oliveira Filho <caio.oliveira@intel.com>

diff --git a/src/compiler/nir/nir_lower_clip.c b/src/compiler/nir/nir_lower_clip.c
index 81c714971b2cf6e4a91c7d77a86228f06949e5f5..cf8a5d93c76450998e17fee26efc88298ff93d3e 100644 (file)
--- a/src/compiler/nir/nir_lower_clip.c
+++ b/src/compiler/nir/nir_lower_clip.c
@@ -243,6 +243,7 @@ lower_clip_outputs(nir_builder *b, nir_variable *position,
          exec_node_remove(&clipvertex->node);
          clipvertex->data.mode = nir_var_shader_temp;
          exec_list_push_tail(&b->shader->globals, &clipvertex->node);
+         nir_fixup_deref_modes(b->shader);
       }
    } else {
       if (clipvertex)