improved fog comment

diff --git a/src/mesa/swrast/s_context.c b/src/mesa/swrast/s_context.c
index c8efb96..55b835b 100644 (file)
--- a/src/mesa/swrast/s_context.c
+++ b/src/mesa/swrast/s_context.c
@@ -155,7 +155,7 @@ _swrast_update_polygon( GLcontext *ctx )
 
 /**
  * Update the _PreferPixelFog field to indicate if we need to compute
- * fog factors per-fragment.
+ * fog blend factors (from the fog coords) per-fragment.
  */
 static void
 _swrast_update_fog_hint( GLcontext *ctx )