Mesa (master): draw: fix MSVC divide-by-zero compilation error

[Brian Paul]

Module: Mesa
Branch: master
Commit: 26a05b5005fd89cad0864258a16951d812b923f8
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=26a05b5005fd89cad0864258a16951d812b923f8

Author: Brian Paul <brianp at vmware.com>
Date:   Tue Jan 22 16:41:56 2013 -0700

draw: fix MSVC divide-by-zero compilation error

Kind of lame, but it works.

---

 src/gallium/auxiliary/draw/draw_cliptest_tmp.h |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)

diff --git a/src/gallium/auxiliary/draw/draw_cliptest_tmp.h b/src/gallium/auxiliary/draw/draw_cliptest_tmp.h
index 8b2dcda..48f2349 100644
--- a/src/gallium/auxiliary/draw/draw_cliptest_tmp.h
+++ b/src/gallium/auxiliary/draw/draw_cliptest_tmp.h
@@ -149,10 +149,11 @@ static boolean TAG(do_cliptest)( struct pt_post_vs *pvs,
        * to NaN to help catch potential errors later.
        */
       else {
+         float zero = 0.0f;
          position[0] =
          position[1] =
          position[2] =
-         position[3] = 0.0f / 0.0f;
+         position[3] = zero / zero; /* MSVC doesn't accept 0.0 / 0.0 */
       }
 #endif