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Hi all, I just had to post this - it makes me realise that I really, really, really need to get a faster system, I'm assuming this is using my UF formula

Video by http://www.fractalforums.com/profile/bib/

<a href="http://www.youtube.com/v/8YvOxY03HdY&rel=1&fs=1&hd=1" target="_blank">http://www.youtube.com/v/8YvOxY03HdY&rel=1&fs=1&hd=1</a>

Hi!

First of all, happy new year 2010!

Of course Dave I'm using your formula. You know, considering the amount of time you spend on fractals, you should find a way to invest say £750 in a new machine. It changed my fractaler's life

The problem is that it's never fast enough. This video took 3 or 4 days to render, and I am considering buying a 2nd machine to boost rendering speed.

@twinbee: I must admit the places where I zoom are found by a trial and error process where random plays a significant role, as well as some experimental knowledge of the Mandebulb structures. I am fortunate because I use UF and a last generation PC, so the preview is displayed quite quickly. Now I wonder what if UF could use the GPU.

When I design a video, I try to find a balance between passing by areas to give this famous perspective effect, and zooming into more details. So far, apart my tower zoom and this one, I haven't seen many videos that show seriously "deep" fractal zoom in the Mandelbulb. "deep" is relative of course...(not comparable with a 2D deep zoom)

Ah, so it took that long
I was over-estimating your processing power
In that case what I actually need is more time and patience !
I maybe need to spend more time rendering and less time tweaking the formulas.

It would be interesting to see exactly the same render done using the updated formula I sent you (i.e. using the dynamic solid threshold) since that should stop the gross aliasing in the background (though it may spoil the depth effect a little).

Bah, you should have told me this some days ago   , I just added a second ATI 5850 card to my system, and just finished rewriting my renderer to use both cards. The current setup is almost fast enough, I have nice framerates in my preview view. Not sure what to do next, I could to a total rewrite and use doubles. Or maybe make add your glow effect for a more infernal video. I have been thinking about adding 3D procedural textures to the MB, but that would be cheating ?
 

And here comes the latest one. The goal was to optimize render speed while not deteriorating quality too much. The result is a zoom of "order 10": the latest minibulbs are 10 generations smaller than the main one.

<a href="http://www.youtube.com/v/Z9hlGQmdz6o&rel=1&fs=1&hd=1" target="_blank">http://www.youtube.com/v/Z9hlGQmdz6o&rel=1&fs=1&hd=1</a>

>> No, I just change start value from i to 0


>> No, the number of iterations does not change. Instead I'm using a parameter called Solid Threshold in Dave Makin's formula. Alternatively I also use the "fast render" parameter in the last WIP version to give the "uniterated" effect, the advantage is that it is smoother and does not make a kind of layers' effect.


>> None. I control the Solid Threshold mostly by "hand" on some keyframes, and Ultrafractal does the interpolation...until I discovered the "Distance adjustment" parameter that does part of the job automatically as far as I understand.


>> Mainly a drop of the parameter "Accuracy" from 2 to 0, but an increase in the solid threshold as well, and other parameters that reduce the quality (and boost the render time!)

Sorry if my explanations are too simple, I'm just a basic user of Ultrafractal and Dave Makin's formula in this case.