kernel NewFilter
<   nameSpace : "your namespace";
    vendor : "your vendor";
    version : 1;
    description : "your description";
>
{
    parameter float3x3 structure
    <
        defaultValue: float3x3( 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0 );
    >;
    
    parameter float divisor<
        minValue: 1.0;
        maxValue: 100.0;
        defaultValue: 9.0;
    >;
    
    void
    evaluatePixel(in image3 src, out pixel3 dst)
    {
        float2 coord = outCoord();
        
        pixel3 p00 = structure[0][0] * sampleLinear(src,coord-float2(1,1));
        pixel3 p01 = structure[1][0] * sampleLinear(src,coord-float2(0,1));
        pixel3 p02 = structure[2][0] * sampleLinear(src,coord-float2(-1,1));
        
        pixel3 p10 = structure[0][1] * sampleLinear(src,coord-float2(1,0));
        pixel3 p11 = structure[1][1] * sampleLinear(src,coord);
        pixel3 p12 = structure[2][1] * sampleLinear(src,coord+float2(1,0));
        
        pixel3 p20 = structure[0][2] * sampleLinear(src,coord+float2(-1,1));
        pixel3 p21 = structure[1][2] * sampleLinear(src,coord+float2(0,1));
        pixel3 p22 = structure[2][2] * sampleLinear(src,coord+float2(1,1));
        
        
        dst = ( p00 + p01 + p02 + 
                p10 + p11 + p12 +
                p20 + p21 + p22   ) / divisor;
    }
}