k3d/share/shaders/k3d_noisysmoke.sl:10:         if (use_noise != 0) {                                              \
k3d/share/shaders/k3d_noisysmoke.sl:33:		      float use_lighting = 1; float use_noise = 1;
k3d/share/shaders/k3d_smoke2.sl:16: *   use_noise - makes the smoke noisy (nonuniform) when nonzero
k3d/share/shaders/k3d_smoke2.sl:56:         if (use_noise != 0) {                                              \
k3d/share/shaders/k3d_smoke2.sl:82:	    float use_noise = 1;
