k3d/share/shaders/k3d_superplank.sl:87:  float grain_s, grain_t, ring_s, ring_t, plank_s, plank_t;
k3d/share/shaders/k3d_superplank.sl:151:      plank_s = ss / PGWIDTH;
k3d/share/shaders/k3d_superplank.sl:152:      whichrow = floor(plank_s);
k3d/share/shaders/k3d_superplank.sl:162:      plank_s = ss / PGWIDTH;
k3d/share/shaders/k3d_superplank.sl:163:      whichrow = floor(plank_s);
k3d/share/shaders/k3d_superplank.sl:168:	  plank_s = tt / PGWIDTH;
k3d/share/shaders/k3d_superplank.sl:170:	  whichrow = floor(plank_s);
k3d/share/shaders/k3d_superplank.sl:195:    w = filteredpulse(whichrow + GWF, whichrow + 1 - GWF, plank_s, sw);
