imageSequence.shader

Shader "LX/imageSequence"
{
    Properties
    {
        _MainTex ("Texture", 2D) = "white" {}
        _Speed("Speed",Float)=1
        _HorizontalAmount("HorizontalAmount",Float)=4
        _VerticalAmount("VerticalAmount",Float)=4
    }
    SubShader
    {
        Tags
        {
            "Queue"="Transparent" "IgnoreProjector"="True" "RenderType"="Transparent"
        }
        LOD 100

        Pass
        {
            Tags
            {
                "LightMode"="ForwardBase"
            }
            ZWrite Off
            Blend SrcAlpha OneMinusSrcAlpha


            CGPROGRAM
            #pragma vertex vert
            #pragma fragment frag

            #include "UnityCG.cginc"


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

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

            sampler2D _MainTex;
            float4 _MainTex_ST;

            float _Speed;
            float _HorizontalAmount;
            float _VerticalAmount;

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

            fixed4 frag(v2f i) : SV_Target
            {
                float time = floor(_Time.y * _Speed);
                float row = floor(time / _HorizontalAmount);
                float column = time - row * _VerticalAmount;

                half2 uv = i.uvMain + half2(column, -row);
                uv.x /= _HorizontalAmount;
                uv.y /= _VerticalAmount;
                fixed4 c = tex2D(_MainTex, uv);
                return c;
            }
            ENDCG
        }
    }
}