/*
 * noisetest.sl : render a simple noise image,
 * to validate Aqsis noise across platforms.
 *
 * (stegu@tn.liu.se) 2005-11-09
 *
 * Lighting has absolutely no influence on this shader.
 * The colors are always fully bright.
 *
 */

surface noisetest() {

 color white = color(1.0, 1.0, 1.0);
 color black = color(0.0, 0.0, 0.0);

 float noiseval = noise(xcomp(P)*16.0-8.0, ycomp(P)*16.0-8.0);

 Ci = mix(black, white, noiseval);
 Oi = Os;

}