sunset box: refraction

Assets/sunset_box/Sunset Env.mat

@@ -59,6 +59,10 @@ Material:
         m_Texture: {fileID: 0}
         m_Scale: {x: 1, y: 1}
         m_Offset: {x: 0, y: 0}
+    - _WaterNormal:
+        m_Texture: {fileID: 2800000, guid: cafeae09bbcef5a6cabeaac76bab5462, type: 3}
+        m_Scale: {x: 1, y: 1}
+        m_Offset: {x: 0, y: 0}
     - _WaterSurface:
         m_Texture: {fileID: 2800000, guid: cafeae09bbcef5a6cabeaac76bab5462, type: 3}
         m_Scale: {x: 1.6, y: 1}
@@ -72,7 +76,7 @@ Material:
     - _Glossiness: 0.5
     - _GlossyReflections: 1
     - _Grid: 0
-    - _HeightOffset: -0.7
+    - _HeightOffset: -1
     - _HorizonTint: 0.1
     - _Metallic: 0
     - _Mode: 0
@@ -92,12 +96,12 @@ Material:
     - _SunRadius: 0.037
     - _Temp: 0.703
     - _UVSec: 0
-    - _WaveStrength: 0.5
+    - _WaveStrength: 1
     - _ZWrite: 1
     m_Colors:
     - _Color: {r: 1, g: 1, b: 1, a: 1}
     - _EmissionColor: {r: 0, g: 0, b: 0, a: 1}
     - _HorizonCol: {r: 0.43, g: 0.27, b: 0.49, a: 1}
-    - _SkyCol: {r: 0.13841508, g: 0.08388217, b: 0.2735849, a: 1}
+    - _SkyCol: {r: 0.08235293, g: 0.09343877, b: 0.27450982, a: 1}
     - _SunCol: {r: 1, g: 0.5988961, b: 0.05098039, a: 1}
-    - _WaterCol: {r: 0.041651834, g: 0.0754717, b: 0.060873438, a: 1}
+    - _WaterCol: {r: 0.6556604, g: 1, b: 0.8435335, a: 1}

Assets/sunset_box/sunset_env_dynamic.shader

@@ -24,7 +24,7 @@
 		_WaterCol ("Water color", Color) = (0.03, 0.08, 0.12, 1.0)
 		_WaveStrength ("Wave scale", Range(0, 1)) = 1
 		[NoScaleOffset]
-		_WaterSurface ("Surface Normal", 2D) = "white" {}
+		_WaterNormal ("Surface Normal", 2D) = "white" {}
 		[Header(Debug)]
 		_Grid ("Grid visibility", Range(0, 1)) = 0
 
@@ -76,7 +76,7 @@
 			float _SunRadius;
 			float _SunCutoff;
 
-			sampler2D _WaterSurface;
+			sampler2D _WaterNormal;
 			float3 _WaterCol;
 			float _HeightOffset;
 			float _WaveStrength;
@@ -93,15 +93,20 @@
 			}
 
 			float3 get_water_normal(float2 pos) {
-				pos *= 0.03;
+				pos *= 0.3;
 				float3 normal = 0;
 				float t1 = _Time.x * 0.18;
-				normal += (tex2D(_WaterSurface, pos * 1.04 + float2(t1, t1 * 0.5)) - 0.5);
+				normal += (tex2D(_WaterNormal, float2(1, -1) * pos + float2(t1, t1 * 0.5)) - 0.5).zxy;
 				float t2 = _Time.x * 0.37;
-				normal += (tex2D(_WaterSurface, pos * 0.276 + float2(t2 * 0.8, t2)) - 0.5);
-				// float t3 = _Time.x * 0.08;
-				// normal += (tex2D(_WaterSurface, pos * 0.07 + float2(t3 * 0.8, -t3)) - 0.5);
-				normal = normalize(normal.zxy);
+				normal += (tex2D(_WaterNormal, pos * 0.276 + float2(t2 * 0.8, t2)) - 0.5).zxy;
+				float t3 = _Time.x * 0.08;
+				normal += (tex2D(_WaterNormal, pos * 0.07 + float2(t3 * 0.8, -t3)) - 0.5).zxy;
+				// normal = normalize(normal.zxy);
+
+				// normal = UP;
+				// normal += (tex2D(_NoiseTex, pos).zxy - 0.5)*0.4;
+				normal = normalize(normal);
+
 
 				// return UP;
 				return lerp(UP, normal, _WaveStrength);
@@ -157,14 +162,21 @@
 
 				col = lerp(col, star_col, star_strength);
 
-				/// debug grid
-				col = lerp(col, WHITE, _Grid * (frac(cellx) < 0.04 || frac(celly) < 0.04));
-
 				/// sun
 				float alignment = min(acos(dot(dir, sun_dir)), 1);
 				float sun_amount = smax(min(_SunRadius / alignment, 5) - _SunCutoff, 0, 0.15);
 
 				col = lerp(col, _SunCol, sun_amount);
+
+				/// debug grid
+				// col = lerp(col, WHITE, _Grid * (frac(cellx) < 0.04 || frac(celly) < 0.04));
+				col = lerp(col, WHITE, _Grid * (
+					pow(frac( cellx), 20) +
+					pow(frac( celly), 20) +
+					pow(frac(-cellx), 20) +
+					pow(frac(-celly), 20)
+				));
+
 				return col;
 			}
 
@@ -172,7 +184,9 @@
 			{
 				// float3 horizon_col = lerp(_SkyCol, _SunCol, _HorizonTint);
 				float3 origin = mul(unity_ObjectToWorld, float4(0, 0, 0, 1));
-				float3 sun_dir = normalize(mul(unity_ObjectToWorld, float4(0, 0, 1, 1)) * float3(1, 0, 1) - origin);
+				float3 sun_dir = mul(unity_ObjectToWorld, float4(0, 0, 1, 1)) * float3(1, 0, 1) - origin;
+				// sun_dir.y = sin(_Time.x * 10) * 0.05;
+				sun_dir = normalize(sun_dir);
 
 				float3 dir = normalize(i.hit_pos - i.cam_pos);
 				float theta = atan2(dir.x, dir.z); // latitude
@@ -191,12 +205,19 @@
 					);
 					float3 water_normal = get_water_normal(surface_pos.xz);
 
+					float3 refracted_dir = normalize(refract(dir, water_normal, 1/1.333));
+					float subsurf = (refracted_dir.y + 1);
+
 					dir = reflect(dir, water_normal);
 					phi = asin(dir.y);
 					float hit_angle = dot(dir, water_normal);
 
-					float3 sky_reflection = sky(dir, theta, phi, sun_dir);
-					col = lerp(sky_reflection, _WaterCol, hit_angle);
+					float3 sky_reflection = sky(dir, theta, phi, sun_dir) ;
+
+					float3 water_col = lerp(_SkyCol, _SunCol, 0.01) * _WaterCol;
+					col = water_col * subsurf * 12;
+ 					col = lerp(sky_reflection, col, hit_angle);
+
 					// float distance = length(surface_pos - camera_local_pos);
 					// float fog_factor = smoothstep(10, 70, distance) * 0.4;
 					// col = lerp(col, horizon_col, fog_factor);