Blend foggy ocean and sky horizons

world/environment/netfishing_sky.gdshader

@@ -4,6 +4,7 @@ uniform vec4 sky_top_color : source_color = vec4(0.204, 0.498, 0.643, 1.0);
 uniform vec4 sky_horizon_color : source_color = vec4(0.663, 0.843, 0.847, 1.0);
 uniform vec4 ground_bottom_color : source_color = vec4(0.157, 0.361, 0.439, 1.0);
 uniform vec4 ground_horizon_color : source_color = vec4(0.549, 0.749, 0.765, 1.0);
+uniform float horizon_blend_width : hint_range(0.005, 0.15, 0.005) = 0.01;
 
 uniform vec3 sun_direction = vec3(0.0, 1.0, 0.0);
 uniform vec4 sun_color : source_color = vec4(1.0, 0.86, 0.46, 1.0);
@@ -39,7 +40,11 @@ void sky() {
 	vec3 base_color = mix(
 		ground_color,
 		sky_color,
-		smoothstep(-0.01, 0.01, view_direction.y)
+		smoothstep(
+			-horizon_blend_width,
+			horizon_blend_width,
+			view_direction.y
+		)
 	);
 
 	float alignment = dot(view_direction, normalize(sun_direction));

world/materials/stylized_water.gdshader

@@ -35,6 +35,10 @@ uniform float open_water_drift_strength : hint_range(0.0, 0.08, 0.001) = 0.045;
 
 uniform float distant_alpha_start : hint_range(10.0, 2000.0, 1.0) = 260.0;
 uniform float distant_alpha_end : hint_range(20.0, 5000.0, 1.0) = 1400.0;
+uniform vec4 distant_fog_color : source_color = vec4(0.549, 0.749, 0.765, 1.0);
+uniform float distant_fog_begin : hint_range(0.0, 2000.0, 1.0) = 42.0;
+uniform float distant_fog_end : hint_range(1.0, 5000.0, 1.0) = 170.0;
+uniform float distant_fog_strength : hint_range(0.0, 1.0, 0.01) = 0.18;
 
 varying vec3 world_position;
 varying float surface_view_depth;
@@ -233,6 +237,15 @@ void fragment() {
 	water_color = mix(water_color, deep_color.rgb, distant_mix * 0.72);
 	water_alpha = mix(water_alpha, 0.96, distant_mix);
 
+	float fog_distance_mix = smoothstep(
+		distant_fog_begin,
+		max(distant_fog_end, distant_fog_begin + 1.0),
+		surface_view_depth
+	);
+	float water_fog_mix = fog_distance_mix * distant_fog_strength;
+	water_color = mix(water_color, distant_fog_color.rgb, water_fog_mix);
+	water_alpha = mix(water_alpha, 0.96, water_fog_mix);
+
 	ALBEDO = water_color;
 	ALPHA = clamp(water_alpha, 0.1, 0.96);
 	METALLIC = 0.0;

world/materials/stylized_water.tres

@@ -32,3 +32,7 @@ shader_parameter/open_water_drift_speed = Vector2(0.01, -0.007)
 shader_parameter/open_water_drift_strength = 0.045
 shader_parameter/distant_alpha_start = 260.0
 shader_parameter/distant_alpha_end = 1400.0
+shader_parameter/distant_fog_color = Color(0.54902, 0.74902, 0.764706, 1)
+shader_parameter/distant_fog_begin = 42.0
+shader_parameter/distant_fog_end = 170.0
+shader_parameter/distant_fog_strength = 0.18

world/world_time_visual_controller.gd

@@ -9,6 +9,9 @@ const RAIN_PARTICLE_AMOUNT: int = 560
 const RAIN_VELOCITY_MIN: float = 16.0
 const RAIN_VELOCITY_MAX: float = 20.0
 const RAIN_DROP_SIZE := Vector3(0.014, 0.34, 0.014)
+const SALT_WATER_MATERIAL: ShaderMaterial = preload(
+	"res://world/materials/stylized_water.tres"
+)
 
 const DAY_SKY_TOP := Color(0.204, 0.498, 0.643)
 const DAY_SKY_HORIZON := Color(0.663, 0.843, 0.847)
@@ -232,7 +235,14 @@ func _apply_time(time_hours: float) -> void:
 	)
 	_sky_material.set_shader_parameter(
 		"ground_horizon_color",
-		ground_horizon.lerp(weather_tint, tint_strength * 0.76),
+		ground_horizon.lerp(
+			weather_tint,
+			tint_strength * _weather_value(0.76, 0.82, 0.90, 1.0),
+		),
+	)
+	_sky_material.set_shader_parameter(
+		"horizon_blend_width",
+		_weather_value(0.01, 0.025, 0.035, 0.08),
 	)
 	_environment.background_energy_multiplier = (
 		lerpf(0.52, 0.85, daylight)
@@ -267,6 +277,7 @@ func _apply_time(time_hours: float) -> void:
 	_environment.fog_depth_end = _weather_value(
 		170.0, 140.0, 95.0, 42.0
 	)
+	_apply_water_haze(weather_tint)
 	_environment.adjustment_brightness = (
 		lerpf(0.93, 0.98, daylight)
 		* _weather_value(1.0, 0.97, 0.92, 0.96)
@@ -308,6 +319,27 @@ func _apply_time(time_hours: float) -> void:
 	_update_rain_amount()
 
 
+func _apply_water_haze(weather_tint: Color) -> void:
+	if SALT_WATER_MATERIAL == null:
+		return
+	SALT_WATER_MATERIAL.set_shader_parameter(
+		"distant_fog_color",
+		_environment.fog_light_color.lerp(weather_tint, 0.18),
+	)
+	SALT_WATER_MATERIAL.set_shader_parameter(
+		"distant_fog_begin",
+		_environment.fog_depth_begin,
+	)
+	SALT_WATER_MATERIAL.set_shader_parameter(
+		"distant_fog_end",
+		_environment.fog_depth_end,
+	)
+	SALT_WATER_MATERIAL.set_shader_parameter(
+		"distant_fog_strength",
+		_weather_value(0.18, 0.34, 0.52, 0.74),
+	)
+
+
 func _on_weather_changed(
 	weather: WorldWeatherService.Weather,
 	_seconds_remaining: float,