Mesa (7.10): i965/fs: When producing ir_unop_abs of an operand, strip negate.

[Eric Anholt]

Module: Mesa
Branch: 7.10
Commit: e15ad414d0f75beac497429f4db7b33ea12c5ea8
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=e15ad414d0f75beac497429f4db7b33ea12c5ea8

Author: Eric Anholt <eric at anholt.net>
Date:   Wed Jan 12 09:37:07 2011 -0800

i965/fs: When producing ir_unop_abs of an operand, strip negate.

We were returning the negative absolute value, instead of the absolute
value.  Fixes glsl-fs-abs-neg.
(cherry picked from commit ab56e3be9aae54602372427755305c354821e105)

---

 src/mesa/drivers/dri/i965/brw_fs.cpp |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/src/mesa/drivers/dri/i965/brw_fs.cpp b/src/mesa/drivers/dri/i965/brw_fs.cpp
index 22e6e2e..3f5a7c2 100644
--- a/src/mesa/drivers/dri/i965/brw_fs.cpp
+++ b/src/mesa/drivers/dri/i965/brw_fs.cpp
@@ -859,6 +859,7 @@ fs_visitor::visit(ir_expression *ir)
       break;
    case ir_unop_abs:
       op[0].abs = true;
+      op[0].negate = false;
       this->result = op[0];
       break;
    case ir_unop_sign: