From bef0dce786eb3714018b85637664426d6dc85d3f Mon Sep 17 00:00:00 2001
From: raccoon <raccoon@home.net>
Date: Sat, 17 May 2025 03:57:13 +0500
Subject: [PATCH] Added fog fading

---
 .../materials/environment/CloudsShader.shader | 32 +++++++++++++++++--
 1 file changed, 29 insertions(+), 3 deletions(-)

diff --git a/Assets/dbl-world/materials/environment/CloudsShader.shader b/Assets/dbl-world/materials/environment/CloudsShader.shader
index 604e686..97807ee 100644
--- a/Assets/dbl-world/materials/environment/CloudsShader.shader
+++ b/Assets/dbl-world/materials/environment/CloudsShader.shader
@@ -25,12 +25,18 @@ Shader "Custom/CloudsShader"
             CGPROGRAM
             #pragma vertex vert
             #pragma fragment frag
+            // make fog work
+            #pragma multi_compile_fog
+
+            #include "UnityCG.cginc"
 
             sampler2D _MainTex;
+            float4 _MainTex_ST;
             half _MainTexScrollX;
             half _MainTexScrollY;
 
             sampler2D _NoiseTex;
+            float4 _NoiseTex_ST;
             half _NoiseTexScrollX;
             half _NoiseTexScrollY;
 
@@ -47,15 +53,20 @@ Shader "Custom/CloudsShader"
                 float2 uv1 : TEXCOORD0;
                 float2 uv2 : TEXCOORD1;
                 float4 vertex : SV_POSITION;
+                UNITY_FOG_COORDS(2)
             };
 
             v2f vert(appdata v)
             {
                 v2f o;
                 o.vertex = UnityObjectToClipPos(v.vertex);
+
                 // Textures scrolling
-                o.uv1 = v.uv + float2(_MainTexScrollX, _MainTexScrollY) * _Time.y;
-                o.uv2 = v.uv + float2(_NoiseTexScrollX, _NoiseTexScrollY) * _Time.y;
+                o.uv1 = TRANSFORM_TEX(v.uv, _MainTex) + float2(_MainTexScrollX, _MainTexScrollY) * _Time.y;
+                o.uv2 = TRANSFORM_TEX(v.uv, _NoiseTex) + float2(_NoiseTexScrollX, _NoiseTexScrollY) * _Time.y;
+
+                UNITY_TRANSFER_FOG(o, o.vertex);
+
                 return o;
             }
 
@@ -63,7 +74,22 @@ Shader "Custom/CloudsShader"
             {
                 fixed4 tex1 = tex2D(_MainTex, i.uv1);
                 fixed4 tex2 = tex2D(_NoiseTex, i.uv2);
-                return tex1 * tex2 * _Color;
+                fixed4 col = tex1 * tex2 * _Color;
+                // fixed4 col = _Color;
+                fixed4 fog = fixed4(0, 0, 0, 1);
+/*
+                // Subtractive fog effect — fade to black
+                float dist = distance(_WorldSpaceCameraPos, i.worldPos);
+                float fogFactor = 1.0 - exp(-_FogDensity * dist);
+                fogFactor = saturate(fogFactor);
+
+                col.rgb *= (1.0 - fogFactor); // Fade to black
+*/
+                // Apply the fog
+                // UNITY_APPLY_FOG(i.fogCoord, fog);
+                //col.rgb -= ; // Fade to black
+
+                return col;
             }
             ENDCG
         }