From a32bc53029414ec952c9adcb21da52c021687f08 Mon Sep 17 00:00:00 2001
From: Chad Versace <chad.versace@linux.intel.com>
Date: Fri, 11 Jan 2013 14:54:28 -0800
Subject: glsl/ir_builder: Add `enum writemask`

Using this enum improves the readibility of calls to assign(), whose third
argument is a writemask.

Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
Signed-off-by: Chad Versace <chad.versace@linux.intel.com>
---
 src/glsl/ir_builder.h | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/src/glsl/ir_builder.h b/src/glsl/ir_builder.h
index f3aa0d76220..82e37628ec7 100644
--- a/src/glsl/ir_builder.h
+++ b/src/glsl/ir_builder.h
@@ -25,6 +25,15 @@
 
 namespace ir_builder {
 
+#ifndef WRITEMASK_X
+enum writemask {
+   WRITEMASK_X = 0x1,
+   WRITEMASK_Y = 0x2,
+   WRITEMASK_Z = 0x4,
+   WRITEMASK_W = 0x8,
+};
+#endif
+
 /**
  * This little class exists to let the helper expression generators
  * take either an ir_rvalue * or an ir_variable * to be automatically
-- 
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