修仙笔记Shader篇之图片马赛克化

本帖最后由 SmilingFace 于 2023-4-18 20:33 编辑

Shader "masaike"
{
    Properties
    {
        _MainTex ("Texture", 2D) = "white" {}
        _UvTilling("UvTilling",float) = 1
    }
    SubShader
    {
        Tags { "RenderType"="Opaque" }


        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;
            float _UvTilling;


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

                return o;
            }

            fixed4 frag (v2f i) : SV_Target
            {
                float2 uv =i.uv;
                uv=floor(uv*_UvTilling)/_UvTilling;
                fixed4 col = tex2D(_MainTex,uv);

                return col;
            }
            ENDCG
        }
    }
}