k3d/share/shaders/k3d_craters.sl:33:    float sctr, tctr, scell, tcell,scellctr,tcellctr;
k3d/share/shaders/k3d_craters.sl:62:		    tctr = cellsizescale * (tcell + 0.5 + jitter * cellnoise(scell+3.5, tcell+8.5));
k3d/share/shaders/k3d_craters.sl:64:		    tt = t - tctr;
k3d/share/shaders/k3d_star.sl:23:    uniform float tctr = 0.5;
k3d/share/shaders/k3d_star.sl:37:    ss = s - sctr; tt = t - tctr;
k3d/share/shaders/k3d_wallpaper.sl:29:    float sctr, tctr, scell, tcell;
k3d/share/shaders/k3d_wallpaper.sl:51:                tctr = CELLSIZE * (tcell + 0.5
k3d/share/shaders/k3d_wallpaper.sl:54:                tt = t - tctr;
