From f09d77b2af0e6e7553a1e2efca2f12fe2e4dcea8 Mon Sep 17 00:00:00 2001
From: Ian Romanick <ian.d.romanick@intel.com>
Date: Mon, 21 Jan 2013 23:19:25 -0500
Subject: [PATCH] glsl: Allow dereferencing fields of an interface instance

Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>
---
 src/glsl/hir_field_selection.cpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/glsl/hir_field_selection.cpp b/src/glsl/hir_field_selection.cpp
index ac416d5dac4..0035a5f81fd 100644
--- a/src/glsl/hir_field_selection.cpp
+++ b/src/glsl/hir_field_selection.cpp
@@ -61,7 +61,8 @@ _mesa_ast_field_selection_to_hir(const ast_expression *expr,
 	 _mesa_glsl_error(& loc, state, "Invalid swizzle / mask `%s'",
 			  expr->primary_expression.identifier);
       }
-   } else if (op->type->base_type == GLSL_TYPE_STRUCT) {
+   } else if (op->type->base_type == GLSL_TYPE_STRUCT
+              || op->type->base_type == GLSL_TYPE_INTERFACE) {
       result = new(ctx) ir_dereference_record(op,
 					      expr->primary_expression.identifier);