Shader "MyShaderTest/SimplePixelationShader"

{

    Properties

    {

        _MainTex ("Base (RGB)", 2D) = "white" {}

        _PixelAmount ("Pixel Amount", float) = 50

    }

    SubShader

    {

        ZTest Always Cull Off ZWrite Off

        Pass

        {

            CGPROGRAM

            #pragma vertex vert

            #pragma fragment frag

            #include "UnityCG.cginc"

            sampler2D _MainTex;

            half4 _MainTex_TexelSize;

            float _PixelAmount;

            struct v2f

            {

                float4 vertex : SV_POSITION;

                half2 uv : TEXCOORD0;

            };

            v2f vert(appdata_img v)

            {

                v2f o;

                o.vertex = UnityObjectToClipPos(v.vertex);

                o.uv = v.texcoord;

                #if UNITY_UV_STARTS_AT_TOP

                    if (_MainTex_TexelSize.y < 0.0)

                    o.uv.y = 1.0 - o.uv.y;

                #endif

                return o;

            }

            fixed4 frag(v2f i) : SV_Target

            {

                fixed uv_X = floor(i.uv.x * _PixelAmount) / _PixelAmount;

                fixed uv_Y = floor(i.uv.y * _PixelAmount) / _PixelAmount;

                i.uv = half2(uv_X,uv_Y);

                fixed4 color = tex2D(_MainTex,i.uv);

                return fixed4(color.rgb,1);

            }

            ENDCG

        }

    }

    FallBack Off

}

这是比较简单的实现方式，比上回的还要方便，用法也是一样。