X-Git-Url: https://git.mxchange.org/?a=blobdiff_plain;f=src%2FWeather%2Fweather.hxx;h=c8728e85494af9a296ca80128fc015799b925884;hb=f0e6716953604730579a5e45f785fd063737dce4;hp=22896793614b3d401185d436eec2b89b6d766324;hpb=c90db01dc8d5462a3da22771ffa7c96f5ea31217;p=flightgear.git

diff --git a/src/Weather/weather.hxx b/src/Weather/weather.hxx
index 228967936..c8728e854 100644
--- a/src/Weather/weather.hxx
+++ b/src/Weather/weather.hxx
@@ -25,6 +25,16 @@
 #define _WEATHER_HXX
 
 
+#include <simgear/compiler.h>
+
+#include <GL/gl.h>
+
+#ifdef SG_HAVE_STD_INCLUDES
+#  include <cmath>
+#else
+#  include <math.h>
+#endif
+
 // holds the current weather values
 class FGWeather {
 
@@ -45,6 +55,7 @@ public:
     inline double get_visibility() const { return visibility; }
 
     inline void set_visibility( double v ) {
+	glMatrixMode(GL_MODELVIEW);
 	// in meters
 	visibility = v;
 
@@ -55,9 +66,12 @@ public:
 	fog_exp2_density = sqrt( -log(0.01) ) / visibility;
 
 	// Set correct opengl fog density
-	xglFogf (GL_FOG_DENSITY, fog_exp2_density);
+	glFogf (GL_FOG_DENSITY, fog_exp2_density);
+	glFogi( GL_FOG_MODE, GL_EXP2 );
 
-	// FG_LOG( FG_INPUT, FG_DEBUG, "Fog density = " << w->fog_density );
+	// SG_LOG( SG_INPUT, SG_DEBUG, "Fog density = " << fog_density );
+	// SG_LOG( SG_INPUT, SG_INFO, 
+	//     	   "Fog exp2 density = " << fog_exp2_density );
     }
 };