Progamming effects

[Grincheux]

Hello,


Where can I find formulas for programming photo effects ?

(Sepia, Water Glass...)

[Tedd]

Try your favourite search engine :P

Specific places I would think of looking: sites for groups concerned with games/graphics techniques, source code for graphics manipulation programs (e.g. GIMP)

[Grincheux]

I am not completly stupid.

I did it before.

So I thought I could meet intelligent users to help me.

[Tedd]

How nice. Little hint - how NOT to get help: insult the intelligence of those trying to help ::)
You obviously didn't look very far - learn to search!
(And there's plenty of info in the gimp sourcecode and associated plugins.)