modified maps

modified maps

Assets/NatureStarterKit2/Standard Assets/Effects/ImageEffects/Shaders/NoiseAndGrain.shader

@@ -0,0 +1,158 @@
+// Upgrade NOTE: replaced 'mul(UNITY_MATRIX_MVP,*)' with 'UnityObjectToClipPos(*)'
+
+Shader "Hidden/NoiseAndGrain" {
+	Properties {
+		_MainTex ("Base (RGB)", 2D) = "white" {}
+		_NoiseTex ("Noise (RGB)", 2D) = "white" {}
+	}
+	
+	CGINCLUDE
+
+		#include "UnityCG.cginc"
+
+		sampler2D _MainTex;
+		sampler2D _NoiseTex;
+		float4 _NoiseTex_TexelSize;
+		
+		uniform float4 _MainTex_TexelSize;
+
+		uniform float3 _NoisePerChannel;
+		uniform float3 _NoiseTilingPerChannel;
+		uniform float3 _NoiseAmount;
+		uniform float3 _ThreshholdRGB;
+		uniform float3 _MidGrey;	
+		
+		struct v2f 
+		{
+			float4 pos : SV_POSITION;
+			float2 uv_screen : TEXCOORD0;
+			float4 uvRg : TEXCOORD1;
+			float2 uvB : TEXCOORD2;
+		};
+		
+		struct appdata_img2 
+		{
+		    float4 vertex : POSITION;
+		    float2 texcoord : TEXCOORD0;
+		    float2 texcoord1 : TEXCOORD1;
+		};		
+
+		inline float3 Overlay(float3 m, float3 color) {
+			color = saturate(color);
+			float3 check = step(float3(0.5,0.5,0.5), color.rgb);
+			float3 result = check * (float3(1,1,1) - ((float3(1,1,1) - 2*(color.rgb-0.5)) * (1-m.rgb))); 
+			result += (1-check) * (2*color.rgb) * m.rgb;
+			return result;
+		}			
+						
+		v2f vert (appdata_img2 v)
+		{
+			v2f o;
+			
+			o.pos = UnityObjectToClipPos (v.vertex);	
+			
+		#if UNITY_UV_STARTS_AT_TOP
+			o.uv_screen = v.vertex.xyxy;
+			if (_MainTex_TexelSize.y < 0)
+        		o.uv_screen.y = 1-o.uv_screen.y;
+		#else
+        		o.uv_screen = v.vertex.xy;
+		#endif
+			
+			// different tiling for 3 channels
+			o.uvRg = v.texcoord.xyxy + v.texcoord1.xyxy * _NoiseTilingPerChannel.rrgg * _NoiseTex_TexelSize.xyxy;
+			o.uvB = v.texcoord.xy + v.texcoord1.xy * _NoiseTilingPerChannel.bb * _NoiseTex_TexelSize.xy;
+
+			return o; 
+		}
+
+		float4 frag ( v2f i ) : SV_Target
+		{	
+			float4 color = (tex2D (_MainTex, i.uv_screen.xy));
+			
+			// black & white intensities
+			float2 blackWhiteCurve = Luminance(color.rgb) - _MidGrey.x; // maybe tweak middle grey
+			blackWhiteCurve.xy = saturate(blackWhiteCurve.xy * _MidGrey.yz); //float2(1.0/0.8, -1.0/0.2));
+
+			float finalIntensity = _NoiseAmount.x + max(0.0f, dot(_NoiseAmount.zy, blackWhiteCurve.xy));
+			
+			// fetching & scaling noise (COMPILER BUG WORKAROUND)
+			float3 m = float3(0,0,0);
+			m += (tex2D(_NoiseTex, i.uvRg.xy) * float4(1,0,0,0)).rgb;
+			m += (tex2D(_NoiseTex, i.uvRg.zw) * float4(0,1,0,0)).rgb;
+			m += (tex2D(_NoiseTex, i.uvB.xy) * float4(0,0,1,0)).rgb;
+
+			m = saturate(lerp(float3(0.5,0.5,0.5), m, _NoisePerChannel.rgb * float3(finalIntensity,finalIntensity,finalIntensity) ));
+
+			return float4(Overlay(m, color.rgb), color.a);
+		} 
+
+		float4 fragTmp ( v2f i ) : SV_Target
+		{	
+			float4 color = (tex2D (_MainTex, i.uv_screen.xy));
+			
+			// black & white intensities
+			float2 blackWhiteCurve = Luminance(color.rgb) - _MidGrey.x; // maybe tweak middle grey
+			blackWhiteCurve.xy = saturate(blackWhiteCurve.xy * _MidGrey.yz); //float2(1.0/0.8, -1.0/0.2));
+
+			float finalIntensity = _NoiseAmount.x + max(0.0f, dot(_NoiseAmount.zy, blackWhiteCurve.xy));
+			
+			// fetching & scaling noise (COMPILER BUG WORKAROUND)
+			float3 m = float3(0,0,0);
+			m += (tex2D(_NoiseTex, i.uvRg.xy) * float4(1,0,0,0)).rgb;
+			m += (tex2D(_NoiseTex, i.uvRg.zw) * float4(0,1,0,0)).rgb;
+			m += (tex2D(_NoiseTex, i.uvB.xy) * float4(0,0,1,0)).rgb;
+
+			m = saturate(lerp(float3(0.5,0.5,0.5), m, _NoisePerChannel.rgb * float3(finalIntensity,finalIntensity,finalIntensity)));
+
+			return float4(m.rgb, color.a);
+		} 			
+
+		float4 fragOverlayBlend	( v2f i ) : SV_Target
+		{	
+			float4 color = tex2D(_MainTex, i.uv_screen.xy);
+			float4 m = tex2D(_NoiseTex, i.uv_screen.xy);
+			
+			return float4(Overlay(m, color.rgb), color.a);
+		}	
+	
+	ENDCG
+	
+	SubShader {
+		ZTest Always Cull Off ZWrite Off Blend Off
+	  
+		Pass {
+	
+		CGPROGRAM
+		
+		#pragma vertex vert
+		#pragma fragment frag
+		
+		ENDCG
+		 
+		}	
+
+		Pass {
+	
+		CGPROGRAM
+		
+		#pragma vertex vert
+		#pragma fragment fragOverlayBlend
+		
+		ENDCG
+		 
+		}	
+
+		Pass {
+	
+		CGPROGRAM
+		
+		#pragma vertex vert
+		#pragma fragment fragTmp
+		
+		ENDCG
+		 
+		}				
+	}
+	FallBack Off
+}