From 9f220bd1353b3d141d6a0308103ff403d8653e23 Mon Sep 17 00:00:00 2001
From: Eric Anholt <eric@anholt.net>
Date: Tue, 27 Sep 2011 14:50:45 -0700
Subject: [PATCH] glsl: Add support for constant expression evaluation on
 trunc().

Fixes the glsl-1.30/compiler/built-in-functions/trunc-* tests under 1.30.

Reviewed-by: Chad Versace <chad@chad-versace.us>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
---
 src/glsl/ir_constant_expression.cpp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/glsl/ir_constant_expression.cpp b/src/glsl/ir_constant_expression.cpp
index 56a423761b5..b3fe6cf9675 100644
--- a/src/glsl/ir_constant_expression.cpp
+++ b/src/glsl/ir_constant_expression.cpp
@@ -1373,6 +1373,8 @@ ir_call::constant_expression_value()
 	    data.f[m*i+j] += op[0]->value.f[i+n*j];
 	 }
       }
+   } else if (strcmp(callee, "trunc") == 0) {
+      expr = new(mem_ctx) ir_expression(ir_unop_trunc, op[0]);
    } else {
       /* Unsupported builtin - some are not allowed in constant expressions. */
       return NULL;
-- 
2.30.2