Mesa (master): mesa: replace macro with function

[Brian Paul]

Module: Mesa
Branch: master
Commit: aafcbd2cf726e9f300d6a9cdfd62ee0fd64f85c9
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=aafcbd2cf726e9f300d6a9cdfd62ee0fd64f85c9

Author: Brian Paul <brianp at vmware.com>
Date:   Sat Mar 19 14:17:41 2011 -0600

mesa: replace macro with function

---

 src/mesa/main/fog.c |   21 +++++++++++++--------
 1 files changed, 13 insertions(+), 8 deletions(-)

diff --git a/src/mesa/main/fog.c b/src/mesa/main/fog.c
index fd64bd1..4392322 100644
--- a/src/mesa/main/fog.c
+++ b/src/mesa/main/fog.c
@@ -79,12 +79,17 @@ _mesa_Fogiv(GLenum pname, const GLint *params )
 }
 
 
-#define UPDATE_FOG_SCALE(ctx) do {\
-      if (ctx->Fog.End == ctx->Fog.Start)\
-         ctx->Fog._Scale = 1.0f;\
-      else\
-         ctx->Fog._Scale = 1.0f / (ctx->Fog.End - ctx->Fog.Start);\
-   } while(0)
+/**
+ * Update the gl_fog_attrib::_Scale field.
+ */
+static void
+update_fog_scale(struct gl_context *ctx)
+{
+   if (ctx->Fog.End == ctx->Fog.Start)
+      ctx->Fog._Scale = 1.0f;
+   else
+      ctx->Fog._Scale = 1.0f / (ctx->Fog.End - ctx->Fog.Start);
+}
 
 
 void GLAPIENTRY
@@ -126,14 +131,14 @@ _mesa_Fogfv( GLenum pname, const GLfloat *params )
             return;
          FLUSH_VERTICES(ctx, _NEW_FOG);
          ctx->Fog.Start = *params;
-         UPDATE_FOG_SCALE(ctx);
+         update_fog_scale(ctx);
          break;
       case GL_FOG_END:
          if (ctx->Fog.End == *params)
             return;
          FLUSH_VERTICES(ctx, _NEW_FOG);
          ctx->Fog.End = *params;
-         UPDATE_FOG_SCALE(ctx);
+         update_fog_scale(ctx);
          break;
       case GL_FOG_INDEX:
  	 if (ctx->Fog.Index == *params)