evershade/Assets/Shaders/SpeckledShader.shader

Shader "Custom/SpeckledShader"
{
    Properties
    {
        _MainTex ("Texture", 2D) = "white" {}
        _SpeckleTex ("Speckle Texture", 2D) = "white" {}
        _SpeckleIntensity ("Speckle Intensity", Range(0,1)) = 0.5
    }
    SubShader
    {
        Tags
        {
            "RenderType"="Opaque"
        }
        LOD 100

        Pass
        {
            CGPROGRAM
            #pragma vertex vert
            #pragma fragment frag

            #include "UnityCG.cginc"

            struct appdata
            {
                float4 vertex : POSITION;
                float2 uv : TEXCOORD0;
            };

            struct v2f
            {
                float2 uv : TEXCOORD0;
                float4 vertex : SV_POSITION;
            };

            sampler2D _MainTex;
            sampler2D _SpeckleTex;
            float _SpeckleIntensity;

            v2f vert(appdata v)
            {
                v2f o;
                o.vertex = UnityObjectToClipPos(v.vertex);
                o.uv = v.uv;
                return o;
            }

            fixed4 frag(v2f i) : SV_Target
            {
                // Main texture color
                fixed4 col = tex2D(_MainTex, i.uv);
                // Speckle texture color
                fixed4 speckle = tex2D(_SpeckleTex, i.uv * 10.0); // Adjust scaling for effect
                // Combine them
                col.rgb = lerp(col.rgb, speckle.rgb, _SpeckleIntensity);
                return col;
            }
            ENDCG
        }
    }
}