k3d/share/shaders/k3d_corktile.sl:11: * Ksgap - the specular component for tile gaps : by default 0.3 * Ks
k3d/share/shaders/k3d_corktile.sl:82:						float Ksgap = -1;
k3d/share/shaders/k3d_corktile.sl:93:	uniform float Ksg = Ksgap > 0 ? Ksgap : Ks * .3; 
