k3d/share/shaders/k3d_contacshadow.sl:45:	float mapdist = float texture(shadowname, ss, tt, "samples", samples);
k3d/share/shaders/k3d_contacshadow.sl:54:	float distance = mapdist - zcomp(cameraP);  
k3d/share/shaders/k3d_corktile.sl:6: * Last Update: 16 October 2000
k3d/share/shaders/k3d_flame.sl:29: * this file last updated 18 Apr 1994
k3d/share/shaders/k3d_luna.sl:22: * this file last updated 18 Apr 1994
k3d/share/shaders/k3d_luna.sl:58:  float pd;			/* pole distance */
k3d/share/shaders/k3d_luna.sl:101:  pd = 1 - v;
k3d/share/shaders/k3d_luna.sl:104:  if(pd < peak_rad)
k3d/share/shaders/k3d_luna.sl:106:      uu = 1 - pd / peak_rad;
k3d/share/shaders/k3d_luna.sl:110:  else if(pd < inner_rad)
k3d/share/shaders/k3d_luna.sl:114:  else if(pd < rim_rad)
k3d/share/shaders/k3d_luna.sl:116:      uu = (pd - inner_rad) / (rim_rad - inner_rad);
k3d/share/shaders/k3d_luna.sl:120:  else if(pd < outer_rad)
k3d/share/shaders/k3d_luna.sl:122:      uu = 1 - (pd - rim_rad) / (outer_rad - rim_rad);
k3d/share/shaders/k3d_luna.sl:135:      if(pd < peak_rad)
k3d/share/shaders/k3d_luna.sl:172:  if(pd >= rim_rad && pd < 0.4)
k3d/share/shaders/k3d_luna.sl:176:      lighten *= (1 - smoothstep(raydist - .2, raydist, pd));
k3d/share/shaders/k3d_mysky.sl:40: * this file last updated 18 Apr 1994

k3d/share/shaders/k3d_puffyclouds.sl:38: * this file last updated 18 Apr 1994
k3d/share/shaders/k3d_round.sl:17:		 dpdu,	/* dPdu pointed toward patch center line 	*/
k3d/share/shaders/k3d_round.sl:18:		 dpdv;	/* dPdv pointed toward patch center line 	*/
k3d/share/shaders/k3d_round.sl:24:		dpdu = dPdu;
k3d/share/shaders/k3d_round.sl:27:		dpdu = -dPdu;
k3d/share/shaders/k3d_round.sl:31:		dpdv = dPdv;
k3d/share/shaders/k3d_round.sl:34:		dpdv = -dPdv;
k3d/share/shaders/k3d_round.sl:52:			center = (radius-lu) * normalize(dpdu);
k3d/share/shaders/k3d_round.sl:54:			center += (radius-lv) * normalize(dpdv);
k3d/share/shaders/k3d_softboxes.sl:415:		    varying float pdotv = -vector(PShd).Rs;
k3d/share/shaders/k3d_softboxes.sl:416:		    Rs = vector( PShd + (pdotv + sqrt (abs (1 - pl + ((pdotv)*(pdotv)))))*Rs );
k3d/share/shaders/k3d_strata.sl:32: * this file last updated 18 Apr 1994
