#ifndef SIDE_INCLUDE
    #define SIDE_INCLUDE
    uniform fixed4 _sideColor;
    uniform fixed _sideSmooth;
    uniform fixed _leftSide;
    uniform fixed _rightSide;
    uniform fixed _upSide;
    uniform fixed _downSide;
    
    inline fixed3 AddSide(fixed2 _worldUV,fixed3 _finalRGB)
    {
        fixed leftside = saturate((_worldUV.x-_leftSide)/_sideSmooth);
        fixed rightside = saturate((1 - (_worldUV.x-_rightSide))/_sideSmooth);
        fixed upside = saturate((1 - (_worldUV.y-_upSide))/_sideSmooth);
        fixed downside = saturate((_worldUV.y-_downSide)/_sideSmooth);
        fixed side = saturate(leftside * rightside * upside * downside);
        side = smoothstep(0,1,side);
        fixed3 finalRGB = lerp(_finalRGB * _sideColor, _finalRGB, side);
        return finalRGB;
    }
#endif