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hi there,

i am wondering, is there actually a buddhabrot renderer that is use-able !?

i saw some ultrafractal buddhabrots, but the formulas seem not to work anymore ... ;(


how would you render a buddhabrot, if not writing a new program for it ?! :D

As far as I know there are none good. Ultra Fractal buddhabrot are somewhat unbuddhistic;)
Original version uses 3 channels, UF implementations 1 channel. They work but are somewhat plain. I f I would implement it, there would be one with 3 channels and using map, but I 'm too tired of engineering, so not now.

thx, i now one of the users here is developing a private buddhabrot renderer, and i as well believe in glsl but i forgot who it was, and he was relatively inactive this year ... :(

I once uploaded a CUDA based buddhabrot to the nvidia forums. I am not sure if that survived the forum migration (they had a security breach and created an entirely new forum - but tried to preserve all postings). The Metropolis-Hastings based renderer allowed for interactive zooming, but was limited by single precision floating point.

here's a thread about these GPU buddhabrots with several contributors.
http://www.fractalforums.com/programming/buddhabrot-on-gpu/

can you find it again !?

The forum thread I linked to in my edit contains some code (requires a CUDA capable NVIDIA graphics card). Not sure if it is the latest version.

http://www.fractalforums.com/index.php?action=dlattach;topic=3614.0;attach=2973
and some required DLLs (place these in the Release folder).
http://www.fractalforums.com/index.php?action=dlattach;topic=3614.0;attach=2950

If I remember correctly, in order to zoom you have to draw a rectangle while pressing the left mouse button and then click into it with the right mouse button. Use the space bar to reset the view. The images are rendered like Polaroid photos... slowly ;)

There are .bat files to start this in three different coloring modes. Some additional instructions for hot keys are printed into the DOS box.

Source code is included. And I just got this to run on my PC at my workplace.

Christian

You might be thinking of William Milberry, user name aluminumstudios.  As far as I can remember, his Buddhabrot rendering software is not something he has released to the public.  Too bad, it creates excellent images.

http://www.fractalforums.com/images-showcase-(rate-my-fractal)/relatively-new-to-here-my-buddhabrot

http://www.youtube.com/user/wmilberry

Ryan

In russian language part there are two buddhabrot programms with source codes buy Woronoi.
Programm is in english:
http://www.fractalforums.com/and1088and1091and1089and1089and1082and1080and1081/and1041and1091and1076and1076and1072and1073and1088and1086and1090-and1053and1077an/ (http://www.fractalforums.com/and1088and1091and1089and1089and1082and1080and1081/and1041and1091and1076and1076and1072and1073and1088and1086and1090-and1053and1077an/)

Приложение: Buddhabrot_1.0.4458.18478.zip
Исходный код: Buddhabrot_1.0_source.zip
(http://img-fotki.yandex.ru/get/6203/97637398.7/0_92caf_aa299a11_L.jpg)

Приложение: BuddhabrotMH_1.0.4458.18604.zip
Исходный код: BuddhabrotMH_1.0_source.zip


(http://img-fotki.yandex.ru/get/6202/97637398.7/0_92cb0_26c0b20e_L.jpg)

direct link to Nikolai's site
https://sites.google.com/site/imfract/buddhabrot

I find that the Metropolis-Hastings version still takes forever to compute a zoomed image.
I'll stick with my CUDA implementation then ;)

Christian

I seem to remember a fairly simple one made by Richard Rosenman (who also has an account here so he might be stopping by) that just worked as a photoshop plugin.  As I remember the buddhas were pretty good quality for such a simple plugin. I would recommend looking at it  :)
http://www.richardrosenman.com/software/downloads/

Nice images, I will try to create a plugin for Buddhabrots in JWildfire soon. Could be also easily animated then.

Sounds as good news, cos there realyu aren't good user friendly and powerfull implementation of buddhabrot with 3 colours.

I have some ideas, and I will implement my version of buddhabrot in Ultra Fractal and Chaos pro. In UF there are some buddhabrots, but of 1 colour dimension, so pretty boring. Actualy I had few colour methods using buddhabrot like 3 colour channels.

OpenCL Buddhabrot implementation (follow the Source Code link)
http://www.infinityk.com/2011/06/buddhabrot-rendered-using-opencl/

DirectX11 (DirectCompute) based Buddhabrot
http://www.yakiimo3d.com/2010/03/29/dx11-directcompute-buddhabrot-nebulabrot/

WinBuddhaOpenCL by ker2x (user of this forum!)
https://github.com/ker2x/WinBuddhaOpenCL

The best software i know (i helped to write it) is budha++ : https://github.com/emmmile/buddha

I released http://fractals.s3.amazonaws.com/winbuddha/winbuddha-v0.1.zip
there is a huge bug with the mouse, use the arrows and + - to navigate :)

One of reason for making my Ultra Fractal / Chaos Pro buddhabrot were to make model for a buddhabrot software as most of encountered buddhabrot renderers were pretty featurless. I can list what buddhabrot soft don't have. In implementing it I went away from buddhabrots so to make it faster and more accesible at the extent that it's hardly should be called a buddhabrot. Throught some of my renders pops up when you google search for budhabrot with single d, that could something to do with my poor english.

Number of things I did should work with proper buddhabrots. Implementing it as hack in fractal generator and wieving buddhabrot method as module based eased the experimentation.

At first I tested some hundreds of formulas I know or found in UF or Fractint's orgform (and took some from Kram and one guy sharing Fractints videos) and so far picked 31, throught not all of them are equaly good but I would recomend at least quadratic general, eye, logic turtle and changable power for mandelbrot. Some escape time formulas don't work as orbit plots but some have amazing orbit plots even with boring mandelbrot sets. All dedicated buddhabrot renderers have just one formula and that's quite a boring. IMHO these formulas should work for any buddhabrot just some pobably would need to be converted to non-complex numbers.

Second, even with many formulas image variance is limited, and it's not so zoomable, and then it don't have julia sets. Trying different combinations I found "quasi julia sets" generating much more variance, and even slightly zoomable as some small parts have interesting fractal shapes. It could work with normal buddhabrots, throught I never picked escaping / non escaping orbits.

Third, If you have RGB colour values, you can switch them in places, invert or apply many transfer functions. All will work on any (0<rgab values<1) RGB colour methods including buddhabrots. What the point to render same coloured images again and again.

Fourth, buddhabrots often are equaliset by white balance. Sigmoid function were great at downregulating equalisation and it kind of made equalistaion softer.

Here (but my image sharing site is down): http://www.fractalforums.com/fractal-programs/problems-with-implementing-budhabrot-in-uf/msg62482/ (http://www.fractalforums.com/fractal-programs/problems-with-implementing-budhabrot-in-uf/msg62482/)

• the last release : https://github.com/ker2x/WinbuddhaVS/releases/tag/0.3-stable
• I'm currently busy (a few hours per day) heavily documenting the code so everyone can understand all mechanics and optimisations implemented in the software https://github.com/ker2x/WinbuddhaVS
• I agree with white balance and colour method, i have ideas for colour method. It will be done as soon as i finished cleaning/documenting the WinBuddha code. (the software was mainly written by Emilio with my help for hacks & optimization, the code wasn't written to be nice there is a lot of "sandbox" code
• The main problem with buddhabrot is speed. It slow, even slower than raytracing a 3D fractal. I don't even want to think about a 3D buddhabulb
• GPGPU hate buddhabrot because of its insane random access to memory. I already wrote an OpenCL buddhabrot, it's not really faster and distribution of GPGPU application isn't fun
• Too busy optimizing buddhabroth to implement other formula. And some optimization i implemented only work for the power 2 mandelbrot set

Last but not least : after a few year i'm not yet bored (and still amazed) with the standard buddhabrot formula. Thanks to good zomming capability.