我想做的是两个贴图混合 其中的一个图片做旋转的运动

Shader "Unlit/ting"

{

  Properties

  {

    _MainTex ("Texture", 2D) = "white" {}

    _Rotate ("Rotate",2D) = "white" {}

    _UVScale ("UV缩放", Range(1, 2)) = 1

    _RotateSpeed ("RotateSpeed",Range(0,20)) = 5

    // _RotatePiv ("RotatePiv",float2(0,0))

  }

  SubShader

  {

    Tags { "Queue"="Transparent" "RenderType"="Transparent" }

    Blend SrcAlpha OneMinusSrcAlpha

    Pass

    {

      CGPROGRAM

      #pragma vertex vert

      #pragma fragment frag

      // make fog work

      #pragma multi_compile_fog

      #include "UnityCG.cginc"

      uniform sampler2D _Rotate; uniform half4 _Rotate_ST;

      uniform sampler2D _MainTex; uniform half4 _MainTex_ST;

      uniform float _UVScale;

      uniform half _RotateSpeed;

      struct VertexInput {

        half4 vertex : POSITION;

        half4 texcoord0 : TEXCOORD0;

      };

      struct VertexOutput {

        half4 pos : SV_POSITION;

        half4 uv0 : TEXCOORD0;

      };

      VertexOutput vert (VertexInput v) {

        VertexOutput o = (VertexOutput)0;

        o.uv0 = v.texcoord0;

        o.pos = mul(UNITY_MATRIX_MVP, v.vertex );

        return o;

      }

      half4 frag(VertexOutput i):COLOR

      {

        half4 _diffuse_var = tex2D(_MainTex,TRANSFORM_TEX(i.uv0, _MainTex));

        half2 uv0 = i.uv0.xy - half2(0.5,0.566);

        uv0 = half2(uv0.x*cos(_RotateSpeed * _Time.y) - uv0.y*sin(_RotateSpeed*_Time.y),

uv0.x*sin(_RotateSpeed * _Time.y) + uv0.y*cos(_RotateSpeed*_Time.y) );

        uv0 += half2(0.5,0.566);

        half4 _rotate_var = tex2D(_Rotate,uv0);

        half3 emissive = ((_diffuse_var.rgb*_diffuse_var.a)+(_rotate_var.rgb));

return fixed4(emissive,_diffuse_var.a);

      }

      ENDCG

    }

  }

}