Change CentralBodyFS to apply the night texture after the ground atmo…

…sphere, because otherwise the night lights can never be shown with ground atmosphere turned on.

Source/Shaders/CentralBodyFS.glsl

@@ -257,36 +257,29 @@ void main()
     float cloudCover = 0.0;     // No clouds
 #endif
 
-    vec3 rgb;
+    vec3 rgb = dayColor(normalEC, txCoord, cloudCover);
 
+#ifdef SHOW_GROUND_ATMOSPHERE
+    const float fExposure = 2.0;
+    vec3 color = v_mieColor + rgb * v_rayleighColor;
+    rgb = vec3(1.0) - exp(-fExposure * color);
+#endif
+
 #ifdef SHOW_NIGHT
-    if (diffuse > u_dayNightBlendDelta)
-    {
-        // Day time
-        rgb = dayColor(normalEC, txCoord, cloudCover);
-    }
-    else if (diffuse < -u_dayNightBlendDelta)
+    if (diffuse < -u_dayNightBlendDelta)
     {
         // Night time
         rgb = nightColor(txCoord, cloudCover);
     }
-    else
+    else if (diffuse <= u_dayNightBlendDelta)
     {
         // Dusk/dawn
         rgb = mix(
             nightColor(txCoord, cloudCover), 
-            dayColor(normalEC, txCoord, cloudCover), 
+            rgb,
             (diffuse + u_dayNightBlendDelta) / (2.0 * u_dayNightBlendDelta));
     }
-#else
-    rgb = dayColor(normalEC, txCoord, cloudCover);
 #endif
 
-#ifdef SHOW_GROUND_ATMOSPHERE
-    const float fExposure = 2.0;
-    vec3 color = v_mieColor + rgb * v_rayleighColor;
-    gl_FragColor = vec4(vec3(1.0) - exp(-fExposure * color), 1.0);
-#else
     gl_FragColor = vec4(rgb, 1.0);
-#endif
 }