modified maps

modified maps

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

@@ -0,0 +1,64 @@
+// Upgrade NOTE: replaced 'mul(UNITY_MATRIX_MVP,*)' with 'UnityObjectToClipPos(*)'
+
+Shader "Hidden/Noise Shader RGB" {
+Properties {
+	_MainTex ("Base (RGB)", 2D) = "white" {}
+	_GrainTex ("Base (RGB)", 2D) = "gray" {}
+	_ScratchTex ("Base (RGB)", 2D) = "gray" {}
+}
+
+SubShader {
+	Pass {
+		ZTest Always Cull Off ZWrite Off
+
+CGPROGRAM
+#pragma vertex vert
+#pragma fragment frag
+#include "UnityCG.cginc"
+
+struct v2f { 
+	float4 pos	: SV_POSITION;
+	float2 uv	: TEXCOORD0;
+	float2 uvg	: TEXCOORD1; // grain
+	float2 uvs	: TEXCOORD2; // scratch
+}; 
+
+uniform sampler2D _MainTex;
+uniform sampler2D _GrainTex;
+uniform sampler2D _ScratchTex;
+
+uniform float4 _GrainOffsetScale;
+uniform float4 _ScratchOffsetScale;
+uniform fixed4 _Intensity; // x=grain, y=scratch
+
+v2f vert (appdata_img v)
+{
+	v2f o;
+	o.pos = UnityObjectToClipPos (v.vertex);
+	o.uv = MultiplyUV (UNITY_MATRIX_TEXTURE0, v.texcoord);
+	o.uvg = v.texcoord.xy * _GrainOffsetScale.zw + _GrainOffsetScale.xy;
+	o.uvs = v.texcoord.xy * _ScratchOffsetScale.zw + _ScratchOffsetScale.xy;
+	return o;
+}
+
+fixed4 frag (v2f i) : SV_Target
+{
+	fixed4 col = tex2D(_MainTex, i.uv);
+	
+	// sample noise texture and do a signed add
+	fixed3 grain = tex2D(_GrainTex, i.uvg).rgb * 2 - 1;
+	col.rgb += grain * _Intensity.x;
+
+	// sample scratch texture and do a signed add
+	fixed3 scratch = tex2D(_ScratchTex, i.uvs).rgb * 2 - 1;
+	col.rgb += scratch * _Intensity.y;
+
+	return col;
+}
+ENDCG
+	}
+}
+
+Fallback off
+
+}