Le 18/02/2017 à 13:33, clipka a écrit :
> Are you sure this is a genuine POV-Ray scene (as opposed to e.g. a
> MegaPOV scene)? I'd be surprised if POV-Ray ever ditched any of its
> inbuilt functions or renumbered them.
> ...
> [snip]
>

Thanks for your help, and yes, it's a POVRay scene.
Here the begin of the code :

// Persistence of Vision Ray Tracer Scene Description File
// File: mb_basic.pov
// Vers: 3.6, 3.7
// Desc: Basic Scene Example
// Date: 12/18/09
// Auth: David Wagner
// Cite: http://www.skytopia.com/project/fractal/2mandelbulb.html

#version 3.6;

#include "colors.inc"

#declare f_mandelbulb=function{internal(79)};

global_settings {
   assumed_gamma 1.0
   }
...
...

I had already looked in 'functions.inc' and 79 is not defined in the 
file. Last is 78, f_noise_generator :(



-- 
Kurtz le pirate
Compagnie de la Banquise

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