// This code multiplies each voxel in the density volume by 0.5

// Bindings
#bind vdb &density float
#bind point &P float3

@KERNEL
{
    float3 pos = @P;
    float d = @density.worldSample(pos);
    d *= 0.5;
    @density.set(d);
}

// Bindings
#bind vdb &density float

@KERNEL
{
    float3 pos = @density.pos;
    float d = @density.worldSample(pos);
    d *= 0.5;
    @density.set(d);
}