k3d/share/shaders/k3d_oakplank.sl:44: *   varnishlump, arnishlumpfreq - amp & freq of lumpiness in the varnish
k3d/share/shaders/k3d_oakplank.sl:120:		     float varnishlump = 0.01, varnishlumpfreq = 0.5;
k3d/share/shaders/k3d_oakplank.sl:160:    varnishlump * filteredsnoise(Pshad * varnishlumpfreq,
k3d/share/shaders/k3d_oakplank.sl:161:				 dPshad * varnishlumpfreq);
