In article <chrishuff_99-39B6D6.10581528042000@news.povray.org>, Chris 
Huff <chr### [at] yahoocom> wrote:

> Sorry about the delays, but here is the changed source code. I also 
> included some demo files and some documentation(part of the reason for 
> the delays).

To fix the "upside down pigment" problem with patterned_blur, add, 
multiply, and exponent, change this line in the functions 
doPostPatternBlur(), doPostAdd(), doPostMult(), and doPostExp():
        Loc[0] = (DBL)x/width;
        Loc[1] = (DBL)y/height;
to this:
        Loc[0] = (DBL)x/width;
        Loc[1] = 1-((DBL)y/height);

-- 
Christopher James Huff - Personal e-mail: chr### [at] yahoocom
TAG(Technical Assistance Group) e-mail: chr### [at] tagpovrayorg
Personal Web page: http://chrishuff.dhs.org/
TAG Web page: http://tag.povray.org/

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