k3d/share/shaders/k3d_cloudplane.sl:30:    uniform float yoffset = 96;
k3d/share/shaders/k3d_cloudplane.sl:34:    y = ycomp(Psh) + yoffset;
k3d/share/shaders/k3d_projectionmap_plastic.sl:39:	float yoffset = 0.0;
k3d/share/shaders/k3d_projectionmap_plastic.sl:50:			float y = yfreq * (ycomp(Pshad) - yoffset + 0.5);
