Better water shaders

assets/voxygen/shaders/fluid-frag/cheap.glsl

@@ -34,16 +34,6 @@ void main() {
 
 	vec3 cam_to_frag = normalize(f_pos - cam_pos.xyz);
 
-	/*
-	// Round the position to the nearest triangular grid cell
-	vec3 hex_pos = f_pos * 2.0;
-	hex_pos = hex_pos + vec3(hex_pos.y * 1.4 / 3.0, hex_pos.y * 0.1, 0);
-	if (fract(hex_pos.x) > fract(hex_pos.y)) {
-		hex_pos += vec3(1.0, 1.0, 0);
-	}
-	hex_pos = floor(hex_pos);
-	*/
-
 	vec3 light, diffuse_light, ambient_light;
 	get_sun_diffuse(f_norm, time_of_day.x, light, diffuse_light, ambient_light, 0.0);
 	float point_shadow = shadow_at(f_pos,f_norm);
@@ -52,7 +42,7 @@ void main() {
 	vec3 point_light = light_at(f_pos, f_norm);
 	light += point_light;
 	diffuse_light += point_light;
-	vec3 surf_color = illuminate(srgb_to_linear(vec3(0.2, 0.2, 1.0)), light, diffuse_light, ambient_light);
+	vec3 surf_color = srgb_to_linear(vec3(0.4, 0.7, 2.0)) * light * diffuse_light * ambient_light;
 
 	float fog_level = fog(f_pos.xyz, focus_pos.xyz, medium.x);
 	vec4 clouds;

assets/voxygen/shaders/fluid-frag/shiny.glsl

@@ -68,16 +68,6 @@ void main() {
 	vec3 cam_to_frag = normalize(f_pos - cam_pos.xyz);
 	float frag_dist = length(f_pos - cam_pos.xyz);
 
-	/*
-	// Round the position to the nearest triangular grid cell
-	vec3 hex_pos = f_pos * 2.0;
-	hex_pos = hex_pos + vec3(hex_pos.y * 1.4 / 3.0, hex_pos.y * 0.1, 0);
-	if (fract(hex_pos.x) > fract(hex_pos.y)) {
-		hex_pos += vec3(1.0, 1.0, 0);
-	}
-	hex_pos = floor(hex_pos);
-	*/
-
 	vec3 b_norm;
 	if (f_norm.z > 0.0) {
 		b_norm = vec3(1, 0, 0);
@@ -111,7 +101,7 @@ void main() {
 	vec3 point_light = light_at(f_pos, norm);
 	light += point_light;
 	diffuse_light += point_light;
-	vec3 surf_color = illuminate(srgb_to_linear(f_col), light, diffuse_light, ambient_light);
+	vec3 surf_color = srgb_to_linear(vec3(0.2, 0.5, 1.0)) * light * diffuse_light * ambient_light;
 
 	float fog_level = fog(f_pos.xyz, focus_pos.xyz, medium.x);
 	vec4 clouds;
@@ -119,7 +109,7 @@ void main() {
 
 	vec3 reflect_ray_dir = reflect(cam_to_frag, norm);
 	// Hack to prevent the reflection ray dipping below the horizon and creating weird blue spots in the water
-	reflect_ray_dir.z = max(reflect_ray_dir.z, 0.05);
+	reflect_ray_dir.z = max(reflect_ray_dir.z, 0.01);
 
 	vec4 _clouds;
 	vec3 reflect_color = get_sky_color(reflect_ray_dir, time_of_day.x, f_pos, vec3(-100000), 0.25, false, _clouds) * f_light;

assets/voxygen/shaders/fluid-vert.glsl

@@ -27,6 +27,9 @@ void main() {
 	f_pos.z *= min(1.0001 - 0.02 / pow(tick.x - load_time, 10.0), 1.0);
 	f_pos.z -= 25.0 * pow(distance(focus_pos.xy, f_pos.xy) / view_distance.x, 20.0);
 
+	// Small waves
+	f_pos.z -= 0.05 + 0.05 * (sin(tick.x * 2.0 + f_pos.x * 2.0 + f_pos.y * 2.0) + 1.0) * 0.5;
+
     f_col = vec3(
     	float((v_col_light >>  8) & 0xFFu),
     	float((v_col_light >> 16) & 0xFFu),

assets/voxygen/shaders/include/sky.glsl

@@ -21,6 +21,8 @@ const vec3 SKY_NIGHT_MID = vec3(0.001, 0.005, 0.02);
 const vec3 SKY_NIGHT_BOT = vec3(0.002, 0.004, 0.004);
 const vec3 NIGHT_LIGHT   = vec3(0.002, 0.01, 0.03);
 
+const float UNDERWATER_MIST_DIST = 100.0;
+
 vec3 get_sun_dir(float time_of_day) {
 	const float TIME_FACTOR = (PI * 2.0) / (3600.0 * 24.0);
 
@@ -202,7 +204,7 @@ float fog(vec3 f_pos, vec3 focus_pos, uint medium) {
 	float max_fog = 1.0;
 
 	if (medium == 1u) {
-		mist_radius = 96.0;
+		mist_radius = UNDERWATER_MIST_DIST;
 		min_fog = 0.0;
 	}
 

assets/voxygen/shaders/skybox-frag.glsl

@@ -14,5 +14,13 @@ out vec4 tgt_color;
 
 void main() {
 	vec4 _clouds;
-	tgt_color = vec4(get_sky_color(normalize(f_pos), time_of_day.x, cam_pos.xyz, vec3(-100000), 1.0, true, _clouds), 1.0);
+	float fog_level = fog(f_pos.xyz, focus_pos.xyz, medium.x);
+
+	float dist = 100000.0;
+	if (medium.x == 1u) {
+		dist = UNDERWATER_MIST_DIST;
+	}
+	vec3 wpos = cam_pos.xyz + normalize(f_pos) * dist;
+
+	tgt_color = vec4(get_sky_color(normalize(f_pos), time_of_day.x, cam_pos.xyz, wpos, 1.0, true, _clouds), 1.0);
 }