Demo 62 - Pseudo Random

Shader "Custom/Noise/PseudoRandom"
{
    Properties
    {
        _Factor1 ("Factor 1", float) = 1
        _Factor2 ("Factor 2", float) = 1
        _Factor3 ("Factor 3", float) = 1
    }

    SubShader
    {
        Tags { "RenderType"="Opaque" }

        Pass
        {
            CGPROGRAM
            #pragma vertex vert_img
            #pragma fragment frag

            #include "UnityCG.cginc"

            float _Factor1;
            float _Factor2;
            float _Factor3;

            float noise(half2 uv)
            {
                return frac(sin(dot(uv, float2(_Factor1, _Factor2))) * _Factor3);
            }

            fixed4 frag (v2f_img i) : SV_Target
            {
                fixed4 col = noise(i.uv);
                return col;
            }
            ENDCG
        }
    }
}