medfall

commit d846293606855fd89e46848cc8fb6b4a3d7bdf3d
parent 65007db79acf5e098ef19f1b8e185f65bb7796c0
Author: Michael Savage <mikejsavage@gmail.com>
Date:   Sat Dec  3 17:46:49 +0200

Exponential fog

Diffstat:
terrain_manager.cc
 | 
8
+++-----
1 file changed, 3 insertions(+), 5 deletions(-)
diff --git a/terrain_manager.cc b/terrain_manager.cc
@@ -99,12 +99,10 @@ static const char * frag_src = GLSL(
 		}
 
 		// fog
-		vec3 fog = vec3( 0.6, 0.6, 0.6 );
+		vec3 fog_color = vec3( 0.6, 0.6, 0.6 );
+		float fog_t = 1.0 - clamp( 1.0 / exp( dot( vpos, vpos ) * 0.0005 * 0.0005 ), 0.0, 1.0 );
 
-		float depth = length( vpos );
-		float t = smoothstep( 1250, 2000, depth ) * 0.2;
-
-		colour = vec4( mix( c, fog, t ), 1.0 );
+		colour = vec4( mix( c, fog_color, fog_t ), 1.0 );
 	}
 );