Hi!!

Has someone an example of how I can get variance antialiasing when import a variable with gather?, for example ray:length.

I've tried do that this way:


//compute transmission vector
$Nf = frontface(N,I);
fresnel(normalize(I),$Nf,1/$ior,kr,$kt,R,$Tr);

//temp variables
float raylength;
vector surfacecolor;

//gather loop
gather(P,$Tr,“samples”,$attSamples,
“bias”,$bias,
“maxdist”,$maxDistance,
“angle”,radians(60),
“samplebase”,1,
“variancevar”,“ray:length”,
“ray:length”,raylength)

{
raylength += 0;
}
else
{
raylength = $densityAttenuation;
}


raylength /= max($attSamples,1);
raylength = fit(raylength,0,$densityAttenuation,1,0);
$katt = pow(raylength,$attExponent);