kernel NewFilter
<   nameSpace : "your namespace";
    vendor : "your vendor";
    version : 1;
    description : "your description";
>
{
    parameter int width
    <
        defaultValue:   200;
        minValue:       1;
        maxValue:       400;
        description:    "height of the generated plasma";
    >;
    
    parameter int height
    <
        defaultValue:   200;
        minValue:       1;
        maxValue:       400;
        description:    "width of the generated plasma";
    >;
    
    void
    evaluatePixel(out pixel4 result)
    {
        float2 coord = outCoord();
        float a =   0.5 + 0.5 * sin(   coord.x             / 16.0 ) +
                    0.5 + 0.5 * sin(   coord.y             /  8.0 ) +
                    0.5 + 0.5 * sin( ( coord.x + coord.y ) / 16.0 ) +
                    0.5 + 0.5 * sin( length( coord )       /  8.0 );
        a /= 4.0;
        
        result = pixel4(a,a,a,a);
    }
    
    region generated()
    {
        return region(float4(0,0,width,height));
    }
}