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kernel void resize_interpolation_array(                                  texture2d_array
   
     inTexture [[texture(0)]],                                  texture2d_array
    
      outTexture [[texture(1)]],                                  ushort3 gid [[thread_position_in_grid]])    {        if (gid.x >= outTexture.get_width() ||            gid.y >= outTexture.get_height() ||            gid.z >= outTexture.get_array_size()) return;        constexpr sampler s(coord::pixel, filter::nearest, address::clamp_to_zero);        const ushort2 pos = gid.xy;        const ushort slice = gid.z;        float scale_x = float(inTexture.get_width())/float(outTexture.get_width());        float scale_y = float(inTexture.get_height())/float(outTexture.get_height());        float i = scale_x * float(pos.x+0.5)-0.5; //this is a trick        float j = scale_y * float(pos.y+0.5)-0.5; //this is a trick        float i_ceil = ceil(i);        float i_floor = floor(i);        float j_ceil = ceil(j);        float j_floor = floor(j);        half4 in;        in = inTexture.sample(s, float2(pos.x    , pos.y    ), slice);        half4 f00 = inTexture.sample(s,float2(i_floor,j_floor),slice);        half4 f10 = inTexture.sample(s,float2(i_ceil,j_floor),slice);        half4 f01 = inTexture.sample(s,float2(i_floor,j_ceil),slice);        half4 f11 = inTexture.sample(s,float2(i_ceil,j_ceil),slice);        float4 r1 =(i_ceil-i)*float4(f01) + (i-i_floor)*float4(f11);        float4 r2 = (i_ceil-i)*float4(f00) + (i-i_floor)*float4(f10);        float4 out = (j-j_floor)*r1 + (j_ceil -j)*r2;        outTexture.write(half4(out), gid.xy, gid.z);    }
    
   

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