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- /************************************************************************
- * brushedmetal.sl
- *
- * Description:
- * Simple anisotropic metal shader.
- *
- * Parameters:
- * Ka, Kd, Ks - the usual meaning
- * uroughness, vroughness - separate roughnesses for u and v directions
- *
- * Author: Larry Gritz (gritzl@acm.org)
- *
- * Reference:
- * _Advanced RenderMan: Creating CGI for Motion Picture_,
- * by Anthony A. Apodaca and Larry Gritz, Morgan Kaufmann, 1999.
- ************************************************************************/
-
- #include "k3d_material.h"
-
- surface k3d_brushedmetal(float Ka = 1, Kd = 0.1, Ks = .9;
- float uroughness = 0.15, vroughness = 0.5;)
- {
- normal Nf = faceforward(normalize(N), I);
- Ci =
- MaterialBrushedMetal(Nf, Cs, Ka, Kd, Ks, normalize(dPdu), uroughness,
- vroughness);
- Oi = Os;
- Ci *= Oi;
- }
-