k3d/share/shaders/k3d_ceramictiles.sl:11: *   groovewidth, grooveheight - width of the spacing between tiles,
k3d/share/shaders/k3d_ceramictiles.sl:67:		  float groovewidth, grooveheight;
k3d/share/shaders/k3d_ceramictiles.sl:77:			    ds) * filteredpulsetrain(grooveheight, 1,
k3d/share/shaders/k3d_ceramictiles.sl:78:						     tt + grooveheight / 2,
k3d/share/shaders/k3d_ceramictiles.sl:173:			 float groovewidth = 0.06, grooveheight = 0.06;
k3d/share/shaders/k3d_ceramictiles.sl:205:			     groovewidth, grooveheight,
k3d/share/shaders/k3d_oakplank.sl:16: *   groovewidth, grooveheight - width of the grooves between planks
k3d/share/shaders/k3d_oakplank.sl:78:		   float groovewidth, grooveheight;
k3d/share/shaders/k3d_oakplank.sl:94:			    ds) * filteredpulsetrain(grooveheight,
k3d/share/shaders/k3d_oakplank.sl:96:						     newt + grooveheight / 2,
k3d/share/shaders/k3d_oakplank.sl:117:		     float groovewidth = 0.05, grooveheight = 0.05;
k3d/share/shaders/k3d_oakplank.sl:133:			       groovewidth, grooveheight,
