/* david van brink / poly@omino.com
 * This kernel shows a mismatch in the implementation of Pixel Bender
 * between CPU and GPU rendering. Tested on Mac OS X 10.5.5 &
 * Pixel Bender Toolkit build 35
 * 2008.10.06
 */
<languageVersion: 1.0;>
kernel g3
< namespace : "AIF";vendor : "omino.com";version : 2; description : "demonstrate bug in mod() function"; >
{
    parameter int xShift <minValue : 0 ; maxValue : 300 ; defaultValue : 100; description:"leftmost pixel";>;
    parameter int xMod <minValue : 2 ; maxValue : 100 ; defaultValue : 32; description:"mod by this value";>;

    input image3 unused; // only to establish the input size
    output pixel3 dst;

    void evaluatePixel()
    {
        float x = outCoord().x - float(xShift);
        
        x = mod(x,float(xMod));
        dst.r = x;
        dst.b = x > 0.0 ? 0.0 : 0.5;
        dst.g = 0.0;
    }
}