I don't know about you guys, but I constantly get this pop-up when I try to make print size renders.

The reason this happens to me is because I typically render without AA, as the built-in AA in UltraFractal has a tendency of giving me very suboptimal results (or just being way too slow compared to rendering without AA and downsampling) in my specific use case, so I just do a raw render and d
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recent by Frederik Slijkerman  ·  Jun 18 '25 at 9:54 am
I have postet once a distance algo for outside, now i try to realize a inside algo too.
I got the formula from a website but it doesn’t work.
I’m probably making a very stupid mistake that I just can’t see.
I can also provide code, but only in CP script language.

Has somebody a working distance algo for inside?

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physicist posted May 5 '25 at 8:58 pm
In some of my formulas I didn't put in a version parameter and I want to change the formula without breaking old fractals.

If I had included something like

int param version
caption = "Version"
default = 240330
visible = @version < 240330
endparam
then I could have used code like

if @version <= 240330
; old stuff
else
; new stuff
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recent by Frederik Slijkerman  ·  May 14 '25 at 3:39 pm
BreOfAnna posted May 4 '25 at 9:09 am
So I recently began experimenting with plug-ins for the first time, and I think I got the basics down except for one thing..

The flower plug-ins that I know do exist can't be found when I want to change the Mandelbrot forumla.



So they're here, shown as available in the file browser for plug-ins.

But then...



Not there when I try to find them after applying the Plug-in
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recent by BreOfAnna  ·  May 6 '25 at 12:34 am
Dint posted Aug 2 '19 at 12:29 am
I went through the documentation but I am not sure I am understanding correctly.

My question is pretty simple.

If I have a formula file
an Inside COloring file
and OUtside Coloring file

Can I pass a parameter on the formula file to the coloring file... specifically the Color density?

Thank you for your help in advance!

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recent by Phillip  ·  Mar 25 '25 at 11:03 am
Hi - I'm trying to do some zooms and I'm getting a lot of "sparklies" in areas where there's lots of detail (hopefully that descriptor makes sense). Adjusting the anti-aliasing parameters help a bit but the sparklies never really go away. Depth 2 or 3 seems to have the most effect but the render times become extremely long. Threshold of 0 vs. 0.1 vs 0.2 doesn't seem to have much effect. I've
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recent by Frederik Slijkerman  ·  Mar 18 '25 at 8:22 am
I was just working with the distance estimation algorithms and also created a few for some of my own fractals.
The idea came up that it might be possible to significantly increase the calculation speed using a distance estimation method, especially when high anti-aliasing is used.
The distance is particularly accurate when you are near the boundary. You could, for example, use a 9x9 anti-al
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recent by Tester37  ·  Mar 15 '25 at 9:27 pm
Dint posted May 9 '23 at 9:52 pm
I have an older INtel i7 computer I don't use anymore because I replaced it with newer one. I would like to use the old I7 computer as a server. To my understanding. THere is a way to make the older computer into a Server. Reading the instructions I am trying to understand some things.


Does having the server mean that all computation runs on the server all computers running server or is
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recent by Eric B  ·  Feb 24 '25 at 9:17 pm
JVYV posted Dec 27 '17 at 12:49 pm
Hi Frederik,

When using UF6 (and the previous versions also) my computers CPU (Intel I5 with 4 cores) is working at 100 % while my GPU (NVIDIA GeForce GTX670) is doing ... right ... nothing at all.

There are softwares - I'm refering to "SETI@home" (*) - that are doing math calculations and are using not only the CPU's in your PC but also the GPU as you can see on the diagram below and th
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recent by Phillip  ·  Feb 6 '25 at 7:46 am
Imran posted Dec 16 '24 at 11:44 am
Oh boi! Finally managed to get back to "ultrafractaling" after some six years. Sucks to be me. lol

Anyways, lets hope life doesn't happen again. Thank you so much for making this awesome software, both from the artistic point of view as well as a software/app. I will try to eat your brains with so many questions and feature requests (since 2003~)... (grump-gasm intensifying).

My last pos
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recent by Frederik Slijkerman  ·  Jan 4 '25 at 3:17 pm
physicist posted Dec 11 '24 at 4:43 pm
Masks are applied to a group by applying the mask to each layer in the group, according to the help file.

It would be useful if a mapping transformation could be applied to a group, presumably by applying it to each layer. (A kaleidoscope transformation is one obvious example.)

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recent by Frederik Slijkerman  ·  Jan 4 '25 at 3:13 pm
WKCook posted Jan 3 '25 at 12:25 am
I would like to create a file for my 3D Printer. I have seen it done with another program where you create a fractal, change some parameters, and then have the program generate several hundred images of all the fractals in between. Then they imported the images into Blender to generate a solid and output an STL file.

That was a pretty old video and thought there might be an easier way.

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recent by Frederik Slijkerman  ·  Jan 4 '25 at 3:13 pm
So I've been trying to find different ways to get rid of this stutter that occurs at the start and end of my looping gradients.

The slower the animation, the more obvious it is but it's still there even when it's just 6 seconds on loop.

Example posted to YouTube

It occurred on my ancient PC and it still happens on my newer one which makes me think it's a software issue. Does anyone h
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recent by Frederik Slijkerman  ·  Dec 1 '24 at 10:51 am
KathyR posted Jan 13 '23 at 2:33 am
I found an interesting and visually pleasing phenomenon called Domain Coloring. Based on mathematical formulas, I don't know how closely it relates to fractals. I'm a big fan of rainbow coloring and when I stumbled upon these images I was mesmerized. Is there any way to make something like this in UF?
Here's a link: https://www.dynamicmath.xyz/domain-coloring/dcgallery.html



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recent by Alexandre Vachon  ·  Oct 19 '24 at 1:48 pm
physicist posted Oct 12 '24 at 2:53 pm
I recently discovered that the first public release (Ultra Fractal 2) was February 8, 1999. That was 25 years ago this year, and at the time we didn't know it and didn't celebrate the anniversary.

I don't know about version 3, but version 4 was released in 2006, version 5 in 2008, and version 6 in 2017.

I first bought Ultra Fractal 4 in September 2006. How about you?

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recent by Frederik Slijkerman  ·  Oct 16 '24 at 7:51 pm
physicist posted Aug 10 '24 at 9:35 pm
I loaded a saved upr after changing a formula. I got the unhelpful message

Could not locate parameter 'which' in 'GenericGradientColoring' in 'Documents\Ultra Fractal 6\Formulas\Standard.ucl'

The missing parameter actually was in 'Shape Distance' in jlb.ulb. The chain is

Standard.ucl has GenericGradientColoring
jlb.ulb has Color by Distance, a sub-class of GenericGradientColoring
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recent by physicist  ·  Sep 12 '24 at 10:07 pm
physicist posted Aug 21 '24 at 3:09 pm
When I made a new class with a first line like this:

class NewTransform(UserTransform)(
instead of the correct

class NewTransform(common.ulb:UserTransform)(
the UF compiler made no complaint. NewTransform just didn't show up on my list of available UserTransform plug-ins.

(I don't see how the compiler would even know to look at this class to check for errors.)

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I wrote a class that's a subclass of common.ulbivergentFormula. ←wth why a smiley?

The formula is purpose-built for a coloring algorithm where it is used hardcodedly (not as a class param), and I need to set the @p_bailout parameter to what the coloring needs (also hardcoded). Is there a way to do that, without writing my own m_bailout 'replacement' member in the class and overriding IsB
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recent by Frederik Slijkerman  ·  Aug 7 '24 at 8:27 am
I am testing UF6 right now, and try to make the first formulas. For this i try to translate the trigonometric functions from here ... to UF.
ht__tp://github.com/mathnet/mathnet-numerics
(UF should have a complete 24 set of all trigonometric functions, for float and complex.)

Now i stack, because i not get it done to return a complex value.
Can somebody tell me how to return a complex
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recent by Frederik Slijkerman  ·  Aug 7 '24 at 8:23 am
reese posted Jan 5 '16 at 3:28 pm
Im having odd, random crashes on my new macbook pro. awesome...
Considering the small, text based size/structure of .ufr's..
I assume an auto backup file thats generated in text and updated overtime i make a change would be easy to implement.
if uf wants to crash, fine. simply access the backup text file with every state of the ufr's history.

An iterate save option with a keyboard sh
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recent by Frederik Slijkerman  ·  Aug 7 '24 at 8:21 am
physicist posted Jul 27 '24 at 7:44 pm
When all pixels are Inside, the Statistics panel shows Min. iterations 0 and Max. iterations 0, and nothing on the Iterations graph. Shouldn't both of those values be #maxiter, not 0, and the graph be a vertical line?

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recent by Phillip  ·  Aug 6 '24 at 9:53 am
Mark Jeronimus posted Jul 22 '24 at 7:56 am
Since I've been out of the loop for so long, I have no idea even how old Uf6 is. It seems like this forum is seldomly visited by people, the mailing list seems to be long dead, the showcase only contains ancient stuff, the pdf manual is incomplete, the online manual contains dead links, and to top it off, the subdomain for the public formula library seems to be dead in the water. Is there any hop
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recent by Frederik Slijkerman  ·  Jul 29 '24 at 12:30 pm
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