Use default visibility instead of modified sky visibility when 2D

clouds are disabled.

diff --git a/src/Main/main.cxx b/src/Main/main.cxx
index dbc0cfd54c05147080eb242733b140745aa1a8b0..7d4525e5bc7834ed907bfbf0edc2d3e056dd2389 100644 (file)
--- a/src/Main/main.cxx
+++ b/src/Main/main.cxx
@@ -435,7 +435,11 @@ void fgRenderFrame() {
     static double last_visibility = -9999;
 
     // update fog params
-    double actual_visibility       = thesky->get_visibility();
+    double actual_visibility;
+    if (fgGetBool("/environment/clouds/status"))
+        actual_visibility = thesky->get_visibility();
+    else
+        actual_visibility = fgGetDouble("/environment/visibility-m");
     if ( actual_visibility != last_visibility ) {
         last_visibility = actual_visibility;