On 11/30/24 06:20, William F Pokorny wrote:
> Still refining it, but an updated version of the ip_noise_generator 
> documentation is attached.

I read it again after posting. One of the points I'm still not making 
well in the "background noise" section is that with f_hash() you can 
roll your own uniform random noise code in SDL.

The following code was used to generate the attached image 
(file_gamma=1.0). No AA used on the left image. Heavy method 3 AA used 
in the middle. No AA, but changing the Step value from 0.0 to 0.02 on 
the right.

#include "functions.inc"
#declare Seed00 = 7834.5540283051168443;
#declare Step = 0.00; // 0.02 for right image
#declare Fn00 = function {
     f_hash(
         (
         f_hash(x+pi, Seed00  ,Step,0)+
         f_hash(y+tau,Seed00*2,Step,0)+
         f_hash(z+e,  Seed00*4,Step,0)
         ),
     Seed00,Step,0)
}
#declare Pigm00 = pigment {
     function { Fn00(x,y,z) }
}

Bill P.

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Attachments:
Download 'f_hashuniformrndnoise.jpg' (253 KB)

Preview of image 'f_hashuniformrndnoise.jpg'