Added dawn

resources/shaders/night_fog_desktop.fragment

@@ -4,6 +4,8 @@ uniform int uPointLightCount;
 uniform vec3 uPointLightPos[4];
 uniform vec3 uPointLightDir[4];
 uniform vec3 uPointLightColor[4];
+uniform vec3 uAmbientColor;
+uniform vec3 uFogColor;
 
 varying vec2 texCoord;
 varying float fogDistance;
@@ -21,8 +23,7 @@ void main()
 	if (color.a < 0.1)
 		discard;
 
-	float ambient = 0.37;
-	vec3 lighting = vec3(ambient);
+	vec3 lighting = uAmbientColor;
 
 	bool hasNormal = dot(fragNormal, fragNormal) > 0.001;
 	vec3 N = hasNormal ? normalize(fragNormal) : vec3(0.0);
@@ -48,7 +49,7 @@ void main()
 
 	color.rgb *= lighting;
 
-	vec3 fogColor = vec3(0.01, 0.01, 0.05);
+	vec3 fogColor = uFogColor;
 	float fogFactor = clamp((fogDistance - 15.0) / 8.0, 0.0, 1.0);
 	color.rgb = mix(color.rgb, fogColor, fogFactor);